Roll map creation device and creation method, roll map, battery manufacturing system and battery manufacturing method using roll map

Abstract

The present invention relates to a roll map creating device and creating method, and also to the roll map, and a battery manufacturing system and a battery manufacturing method using the roll map. The roll map creation device of the present invention includes an inspection and / or measuring instrument that inspects and / or measures an electrode moving between an unwinder and a rewinder to obtain inspection and / or measurement data, and a roll map creation unit that creates a roll map by displaying at least a portion of the inspection and / or measurement data on a plane that replicates the moving electrode.

Description

[Technical Field]

[0001] The present invention relates to a role map creation device and creation method.

[0002] The present invention also relates to the roll map, and a battery manufacturing system and a battery manufacturing method using the roll map.

[0003] This application claims the benefit of priority based on Korean Patent Application No. 10-2022-0116302, dated September 15, 2022, Korean Patent Application No. 10-2023-0013307, dated January 31, 2023, Korean Patent Application No. 10-2023-0074503, dated June 9, 2023, and Korean Patent Application No. 10-2023-0074504, dated June 9, 2023, and all contents disclosed in the documents of these Korean patent applications are incorporated herein by reference. [Background technology]

[0004] The demand for secondary batteries is also increasing rapidly due to technological developments and increased demand for mobile devices. Among them, lithium secondary batteries are widely used as an energy source for various electronic products as well as various mobile devices due to their high energy density, operating voltage, and excellent storage and life characteristics.

[0005] The so-called electrode manufacturing process for manufacturing electrodes for lithium secondary batteries includes a coating process in which an active material and a predetermined insulating material are applied to the surface of a metal electrode plate, which serves as a current collector, to form a positive electrode and a negative electrode, a roll press process in which the coated electrodes are rolled, and a slitting process in which the rolled electrodes are cut to size.

[0006] The electrodes manufactured in the electrode manufacturing process are notched to form electrode tabs, and a separator is placed between the positive and negative electrodes to form an electrode assembly. The electrode assembly is then stacked or folded, packaged in a pouch or can, and filled with electrolyte to form a secondary battery. The assembled secondary battery is then charged and discharged, and undergoes an activation process to impart battery characteristics, resulting in the final product, a secondary battery.

[0007] In the electrode manufacturing process, if foreign matter gets mixed into the active material layer or if a coating defect occurs and is detected by an inspection device, conventionally, a mark is placed on the electrode or a worker attaches a defect tag so that the defect can be removed in the coating process or a subsequent process (see Patent Document 1).

[0008] However, when marking directly on an electrode, it is difficult to mark the coated portion where the electrode is applied, so marking has been limited to uncoated portions. Therefore, for example, if an appearance defect occurs on a coated portion, the marking is made on the uncoated portion rather than the coated portion where the defect actually occurred, which makes it difficult to identify the exact location of the defect or defect. Furthermore, since Patent Document 1 employs a physical marking process that directly displays information about quality and defects on the electrode, once the electrode is assembled into a secondary battery, even if a defect occurring in a subsequent process is due to a defect in the electrode process, it is difficult to determine which stage in the electrode manufacturing process caused the defect. In other words, once the physically marked electrode is assembled or destroyed, it is very difficult to analyze the quality correlation between the electrode manufacturing process and subsequent processes.

[0009] Meanwhile, a technology has been proposed in which, after the electrode manufacturing process is completed, the secondary battery is directly marked with ink on the secondary battery assembly line to indicate whether it is defective or not, thereby keeping track of the work history for each secondary battery (see Patent Document 2).

[0010] However, because the above-mentioned prior art relates to marking after secondary battery assembly, it is possible to ascertain the history of the secondary battery during and after assembly, but is limited in that it is not possible to ascertain history information related to defects in the electrode manufacturing process, which is a process that precedes this. In other words, because Patent Document 2 is a technology that physically marks the secondary battery during or after secondary battery assembly, it is disconnected from the product history related to quality and defects in the electrode manufacturing process, and it is also not possible to analyze the quality correlation between the electrode manufacturing process and the assembly process.

[0011] Furthermore, none of the above patent documents disclose information on non-defective items, such as the loading amount or dimensions / width in the electrode manufacturing process. Therefore, for example, if an electrode was not defective at the time of manufacturing but a defect such as a fire occurred in a subsequent process or during use of the secondary battery, and it was necessary to trace the product history of the battery back to the electrode manufacturing process to identify the cause of the defect, the technology disclosed in the above patent documents made it impossible to identify such a cause.

[0012] In light of the above, it can be said that there is a need for the development of a technology for displaying or storing historical information regarding quality or defects in the electrode manufacturing process that enables a quality correlation analysis in relation to subsequent processes in order to identify the causes of subsequent defects in secondary batteries. [Prior art documents] [Patent documents]

[0013] [Patent Document 1] Japanese Patent Publication No. 2015-2149 (Published January 5, 2015) [Patent Document 2] Korean Patent No. 10-1731983 (published on May 2, 2017) Summary of the Invention [Problem to be solved by the invention]

[0014] The present invention has been made to solve the above-mentioned problems, and aims to provide a roll map creation device and a creation method thereof that can grasp data related to quality and / or defects in the electrode manufacturing process.

[0015] Another object of the present invention is to provide a roll map created by the above-mentioned creation device and creation method, and a battery manufacturing system and battery manufacturing method that use the above-mentioned roll map.

[0016] The technical problems of the embodiments disclosed in this specification are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person skilled in the art from the following description. [Means for solving the problem]

[0017] To solve the above problem, the roll map creation device of the present invention includes an inspection and / or measuring instrument that inspects and / or measures electrodes that move between an unwinder and a rewinder to obtain inspection and / or measurement data, and a roll map creation unit that creates a roll map that is represented in a planar shape that replicates the moving electrodes and displays at least a portion of the inspection and / or measurement data.

[0018] The roll map creation device may further include a position measuring device that acquires, as coordinate values, the positions of the electrodes according to the amount of rotation of the unwinder and / or rewinder.

[0019] The position measuring device may be a rotary encoder that measures the electrode position from the amount of rotation of a motor that drives the unwinder or rewinder.

[0020] The test and / or measurement data may be one of the following: 1) Data on at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on the electrode 4) Data on electrode appearance 5) Data on the location of electrode disconnection sections or electrode connection positions 6) Data regarding the location of the sample testing unit 7) Data on the location of the electrode disposal section 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrode 11) Data on electrode thickness after roll pressing

[0021] The above tests and / or instruments are: a reference point measuring device for measuring reference points marked at predetermined intervals on the electrode; a seam gauge attached to the electrode for sensing the seam; a loading amount measuring device for measuring the electrode slurry loading amount; dimension and width measuring instruments; an electrode appearance inspector; The electrode thickness gauge may be at least one of:

[0022] The inspection and / or measurement device may be connected to the position measurement device to acquire the coordinate values ​​of the electrode portion from which the inspection and / or measurement data was acquired, and may transmit the inspection and / or measurement data and the coordinate values ​​to the roll map creation unit.

[0023] As one example, the roll map creation device further includes a control unit that controls electrode movement between the unwinder and rewinder, and the control unit can match the inspection and / or measurement data with coordinate values ​​of the electrode portion from which the inspection and / or measurement data was obtained, and transmit the matched coordinate values ​​and the inspection and / or measurement data to the roll map creation unit.

[0024] Specifically, the coordinate value of the electrode portion from which the inspection and / or measurement data was acquired may be a value obtained by adding an offset distance, which is the distance between the inspection and / or measurement instrument and the rewinder, to a coordinate value corresponding to the amount of rotation of the rewinder at the time the inspection and / or measurement data was acquired.

[0025] The roll map creation unit can display the coordinate values ​​and at least a portion of the inspection and / or measurement data on the roll map.

[0026] The roll map creation section can display reference points marked on the electrodes at predetermined intervals at positions on the roll map that correspond to the coordinate values ​​of the reference points.

[0027] The role map creator may be a Manufacturing Execution System (MES) or a Statistical Process Control (SPC).

[0028] As one example, the roll map creation unit may include a visualization device that defines a visualization area that forms the plane of the roll map, displays the coordinate values ​​on the defined area, and visualizes and shows the inspection and / or measurement data.

[0029] The role map generator may further include a central processor for comparing the test and / or measurement data with normal data and causing data found to be abnormal to be visualized and displayed by the visualization device.

[0030] As one example, the roll map creation device includes a manual input device into which test and / or measurement data of electrodes that have been manually tested and / or measured is input, and the manual input device may transmit the manually tested and / or measured test and / or measurement data directly to the roll map creation unit or transmit it to the roll map creation unit via a control unit that controls the movement of the electrodes between the unwinder and rewinder.

[0031] The role map creating device may include a display unit connected to the role map creating unit to display the role map.

[0032] The coordinate values ​​obtained by the position measurement device may be values ​​for the longitudinal position of the electrode.

[0033] The roll map creating unit may display the width direction positions of the electrodes on the roll map as coordinate values. The coordinate values ​​relating to the width direction positions may be obtained by the inspection and / or measuring device.

[0034] The roll map creation unit can create at least one of an absolute coordinate roll map that displays both the coordinate values ​​of the electrode removal portion and the surviving electrode portion that remains after the removal, and a relative coordinate roll map that displays only the coordinate values ​​of the surviving electrode portion.

[0035] The roll map creating unit may create at least one of a roll map for a top surface of an electrode and a roll map for a back surface of an electrode.

[0036] In another aspect of the present invention, a method for creating a role map comprises: Inspecting and / or measuring the electrode moved between the unwinder and the rewinder to obtain inspection and / or measurement data, and obtaining coordinate values ​​of the position of the moved electrode; and creating a roll map by displaying at least a portion of the inspection and / or measurement data and the coordinate values ​​on a plane that replicates the moving electrode.

[0037] As one example, the inspection and / or measurement data acquisition step may be preceded by an electrode roll information registration step in which the specifications of the electrode roll to be installed on the unwinder are registered.

[0038] The roll map may also display information on at least some of the specifications of the electrode roll.

[0039] The test and / or measurement data may be obtained automatically by a predetermined test and / or measurement instrument or manually by an operator.

[0040] According to the above roll map creation method, reference points marked on the electrodes at predetermined intervals can be displayed at positions on the roll map corresponding to the coordinate values ​​of the reference points.

[0041] According to the role map creation method, the test and / or measurement data can be compared with normal data, and data found to be abnormal can be displayed on the role map so as to be visually distinguished from other data.

[0042] As one example, data regarding the current input status of input materials input into the electrode manufacturing process can be displayed in parallel with the roll map.

[0043] As one example, detailed data relating to one or more of the inspection and / or measurement data, or process data relating to each detailed process in manufacturing an electrode, may be displayed in association with specific coordinate values ​​or specific data display portions of the roll map.

[0044] The roll map according to the present invention includes a roll map bar displayed in the form of a bar that represents the electrodes moving between the unwinder and the rewinder, and at least a portion of the inspection and / or measurement data obtained by inspecting and / or measuring the moving electrodes can be displayed at a predetermined position on the roll map bar that corresponds to the position of the electrodes from which the data was acquired.

[0045] Coordinate values ​​indicating the longitudinal positions of the electrodes can be displayed in the longitudinal direction of the roll map bar.

[0046] As one example, information regarding at least one of the electrode specifications, manufacturing process, and manufacturing equipment may be displayed together with the roll map.

[0047] The inspection and / or measurement data displayed on the roll map may include: 1) Data on at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on the electrode 4) Data on electrode appearance 5) Data on the location of electrode disconnection sections or electrode connection positions 6) Data regarding the location of the sample testing unit 7) Data on the location of the electrode disposal section 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrode 11) Data on electrode thickness after roll pressing It can be one or more of:

[0048] As one example, a roll map bar may be provided for each of the electrode lanes and / or for each of the upper and lower surfaces of the electrodes, and at least a portion of the inspection and / or measurement data may be displayed on each roll map bar.

[0049] On the roll map, data on the current input status of input materials input into the electrode manufacturing process may be displayed in parallel with the roll map bar.

[0050] Detailed data relating to one or more of the above inspection and / or measurement data; or Process data relating to each detailed process in manufacturing an electrode may be displayed in association with a specific coordinate value or specific data display portion of the roll map bar.

[0051] For example, when a specific range of the roll map bar is designated, inspection and / or measurement data associated with the specific range or process data related to each detailed process in manufacturing an electrode may appear.

[0052] As an example, when a specific location on the roll map bar is designated, an appearance image of the location can be displayed.

[0053] Reference points marked at predetermined intervals on the electrode can be replicated and displayed on the roll map bar at positions corresponding to the coordinate values ​​of the reference points.

[0054] When the position of a reference point on the electrode changes as the coated electrode is roll pressed and stretched, a reference point replicating the changed reference point can be displayed at a coordinate position corresponding to the changed position on the roll map bar.

[0055] The role map may be stored on a computer-readable recording medium.

[0056] An electrode loss amount measuring device according to one embodiment of the present invention includes: an electrode that is transported between an unwinder and a rewinder, and has a plurality of reference points marked at predetermined intervals between the start and end of the electrode; a reference point measuring device that measures the reference points marked on the electrode; a position measuring device that derives coordinate values ​​of the electrode according to the amount of rotation of the unwinder or rewinder, and derives coordinate values ​​of the reference points when the reference point measuring device measures the reference points in conjunction with the reference point measuring device; and a calculation unit that, when the reference point interval between the start and end of the electrode deviates from the set reference point interval due to partial loss of the electrode, calculates the amount of loss of the electrode by comparing the derived reference point coordinate values ​​with the set reference point coordinate values.

[0057] In another aspect of the present invention, a method for calculating an amount of electrode loss includes the steps of marking a plurality of reference points at predetermined intervals between a start point and an end point of an electrode being transported between an unwinder and a rewinder; measuring a reference point on the electrode with a reference point measuring device to derive coordinate values ​​of the reference point; and when the reference point interval between the start and end portions of the electrode varies from the set reference point interval due to loss in part of the electrode, the step of calculating the amount of loss in the electrode by comparing the derived reference point coordinate value with the set reference point coordinate value.

[0058] In another aspect of the present invention, a roll map creation device includes a reference point measurement device that inspects an electrode moving between an unwinder and a rewinder and senses a reference point marked on the electrode; a position measurement device that derives coordinate values ​​of the electrode according to the amount of rotation of the unwinder or the rewinder and derives coordinate values ​​of the reference point; and a roll map creation unit that creates a roll map bar that replicates the moving electrode and creates a roll map that indicates an amount of electrode loss calculated by comparing the coordinate values ​​of the derived reference point with a set reference point coordinate value on the roll map bar.

[0059] Another aspect of the present invention provides a roll map correction system, which includes a roll map creation unit that generates a roll map for the first process, the roll map being expressed in a planar shape that replicates an electrode that moves between a first unwinder and a first rewinder and undergoes a first process, and on which electrode inspection and / or measurement data for the first process and coordinate values ​​indicating the positions of the electrodes are displayed; and a roll map correction unit that converts the roll map coordinates of the first process in reverse order to generate a roll map for the second process so that the coordinate values ​​of the start and end points of the roll map for the first process are reversed when the electrode moves between the second unwinder and the second rewinder to perform the second process.

[0060] As an example, if a portion of the electrode end is removed after the first step is completed and before the second step is started, The roll map correction unit may remove coordinate values ​​corresponding to the removed portion of the electrode end from the roll map of the first process, and may generate a roll map of the second process by converting the coordinate values ​​of the roll map of the first process in reverse order so that coordinate values ​​of the start portion of the roll map of the first process and the end portion where the portion of the electrode end has been removed are reversed.

[0061] In another aspect of the present invention, there is provided a defect removal device for a second process of an electrode that moves between a first unwinder and a first rewinder and undergoes a first process, the defect removal device including: a defect removal port located between a second unwinder and a second rewinder, where a defective section of the electrode that occurs in the first process is removed; a second process control unit that controls electrode movement between the second unwinder and the second rewinder, The second process control unit can calculate the time when the electrode of the defective section will arrive at the defect removal port from the second unwinder based on the coordinate information of the defective section displayed on the roll map of the first process, and can stop the electrode movement of the second process so that the defective section of the electrode can be removed from the defect removal port when the defective section arrives at the defect removal port.

[0062] The electrode defect removal device is a roll map correcting unit that converts and corrects the roll map coordinate values ​​in the first step in reverse order so that the coordinates of the roll map start and end points in the first step are reversed; The second process control unit can stop the movement of the electrode based on the coordinate values ​​of the defective section displayed on the corrected roll map.

[0063] As an example, if a portion of the electrode end is removed after the first step is completed and before the second step is started, the roll map correction unit removes coordinate values ​​corresponding to the removed part of the electrode end from the roll map of the first process, and converts and corrects the roll map coordinate values ​​of the first process in reverse order so that coordinate values ​​of the start part of the roll map of the first process and the end part where the part of the electrode end has been removed are reversed; The second process control unit can stop the movement of the electrode based on the coordinate values ​​of the defective section displayed on the corrected roll map.

[0064] The second process control unit may control the electrode of the second process to be moved slowly during a predetermined time period between a predetermined time point before the defective section arrives at the defect removal port and the arrival time.

[0065] The electrode defect removal device may further include an alarm unit that issues an alarm in at least one of the following cases: when the electrode reaches the defect removal port in the defective section, when the electrode movement in the second step stops, and after a predetermined time has elapsed after the electrode movement in the second step stops.

[0066] As one example, the first step may be an electrode coating step in which an electrode active material is applied to a current collector to form a coated electrode, and the second step may be a roll pressing step in which the coated electrode is rolled with a press roll.

[0067] A role map creation system according to another embodiment of the present invention includes: A roll map creation system for a series of roll-to-roll processes in which a process in which an electrode unwound from an unwinder is moved and wound by a rewinder is sequentially and repeatedly carried out, a roll map creation device that creates a roll map for each process, the roll map being defined as a coordinate plane having two coordinate axes, the longitudinal axis and the width axis of the electrode, and capable of displaying the position of the electrode in each process using coordinate values ​​on the coordinate plane; and a roll map matching unit that matches the coordinate values ​​of the roll map of each process with the coordinate values ​​of the roll map of the final process so that the actual electrodes represented by the roll map of the final process in a series of roll-to-roll processes match with the actual electrodes represented by the roll maps of each process before the final process.

[0068] The roll map creation device includes a position measuring device that acquires, as coordinate values, the longitudinal position of the electrode corresponding to the amount of rotation of one of the unwinder and rewinder in each process; a test and / or measurement instrument for testing the electrodes moving between the unwinder and the rewinder to obtain test and / or measurement data; and a roll map creation unit that defines a visualization area that forms a coordinate plane of the roll map and creates a roll map by displaying at least a portion of the test and / or measurement data and longitudinal coordinate values ​​of the electrodes on the visualization area.

[0069] The said test and / or measurement data are as follows: 1) Data on at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on the electrode 4) Data on electrode appearance 5) Data on the location of electrode disconnection sections or electrode connection positions, or data on electrode joints 6) Data regarding the location of the sample testing unit 7) Data on the location of the electrode disposal section 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrode 11) Data on electrode thickness after roll pressing one or more of The coordinate values ​​of the electrode portion from which the inspection and / or measurement data is acquired can be displayed on the roll map of each process together with the inspection and / or measurement data.

[0070] The longitudinal coordinate value of the electrode portion from which the inspection and / or measurement data is obtained may be a value obtained by adding an offset distance, which is the distance between the inspection and / or measurement device and the rewinder, to the longitudinal coordinate value of the electrode corresponding to the amount of rotation of the rewinder at the time the inspection and / or measurement data is sensed.

[0071] The width direction coordinate value of the electrode portion from which the inspection and / or measurement data is obtained may be obtained by the inspection and / or measurement device.

[0072] The role map creation device a controller for controlling electrode movement between the unwinder and the rewinder; The control unit can transmit the test and / or measurement data to the roll map creation unit by matching the test and / or measurement data with coordinate values ​​of the electrode portion from which the test and / or measurement data was obtained.

[0073] The role map creation device an absolute coordinate roll map showing, on the coordinate plane, the coordinate values ​​of the electrode portions removed during and between each step and the coordinate values ​​of the surviving electrode portions excluding the removed electrode portions; A relative coordinate roll map can be created in which only the coordinate values ​​of the surviving electrode portions, excluding the removed electrode portions, are shown on the coordinate plane.

[0074] The role map matching unit is The coordinate values ​​of the relative coordinate roll map of each step before the final step can be made to match the coordinate values ​​of the relative coordinate roll map of the final step.

[0075] The role map creation unit A roll map for the top surface of the electrode and a roll map for the back surface of the electrode can be created separately.

[0076] When the final process is a notching process, The roll map creating unit can create a single-plane roll map in which only coordinate values ​​are displayed on the coordinate plane, regardless of whether the electrode is on the upper or lower surface.

[0077] The role map matching unit is From the roll map of each process, all coordinate sections corresponding to the actual electrode portions cumulatively removed in a series of roll-to-roll processes are removed; By correcting the coordinate values ​​of the remaining coordinate sections that remain after the removal so that they match the coordinate values ​​of the roll map of the final process, the roll map length of each process can be made to match the roll map length of the final process.

[0078] When the start direction of the roll map coordinate of a specific process before the final process is reversed from the start direction of the roll map coordinate of the final process according to the electrode winding direction of the rewinder of the preceding process and the electrode unwinding direction of the unwinder of the subsequent process, The roll map matching unit may match the roll map coordinate start direction of the specific step with the roll map coordinate start direction of the final step.

[0079] When the upper surface of the electrode in the preceding process is inverted to the lower surface of the electrode in the following process according to the electrode winding direction in the rewinder in the preceding process and the electrode unwinding direction in the unwinder in the following process, The roll map matching unit stores information about the electrode surface inversion, The roll map matching unit may match the roll map for the upper surface of the electrode in the preceding process with the roll map for the lower surface of the electrode in the following process based on the information.

[0080] The role map matching unit is The roll map of the final process and the roll maps of each process that match the roll map of the final process can be arranged side by side and expressed as an overlay roll map.

[0081] The roll map creating device may further include a display unit on which the overlay roll map is displayed.

[0082] The present invention also provides an overlay roll map in which roll maps of a series of roll-to-roll processes in which the roll-to-roll process in which an electrode moves between an unwinder and a rewinder is sequentially and repeatedly performed are arranged side by side.

[0083] In the overlay roll map, the roll maps of each process before the final process among the roll maps may be matched by roll map matching in which coordinate values ​​of the roll map of each process are matched with coordinate values ​​of the roll map of the final process so that real electrodes represented by the roll map of the final process match with real electrodes represented by the roll maps of each process before the final process.

[0084] The present invention may also provide a computer-readable recording medium containing the above-described overlay role map.

[0085] The battery manufacturing system of the present invention includes a notching control unit that acquires electrode coordinate information of an electrode line that is transferred in a notching process and a cell ID of the unit electrode; a calculation unit for calculating pitch information, which is the width of the unit electrode to be notched, and a cell ID coordinate value, which is the position of the specific unit electrode to be moved in the notching process, from the cell ID; a roll map creation unit that creates a roll map, in which electrode positions are displayed as coordinate values ​​and which allows changes in electrode length in the electrode manufacturing process before the notching process to be grasped, from the electrode coordinate information transmitted from the notching control unit; a mapping unit that compares the roll map coordinate values ​​with the cell ID coordinate values ​​to derive an electrode position in an electrode manufacturing process from which a specific unit electrode originates.

[0086] In another aspect of the present invention, a battery manufacturing system includes: a plurality of tanks connected by piping between a mixer and a coater, in which electrode slurry supplied from the mixer is sequentially transferred toward the coater; and a control unit that recognizes lot information of the electrode slurry, assigns and records lot information of the electrode slurry supplied to each tank for each tank, and detects electrode slurry lot information of a final supply tank that supplies electrode slurry to the coater by referring to a history of the lot information recorded for each tank.

[0087] The present invention also provides a method for manufacturing an electrode slurry, comprising: recognizing and recording lot information of the electrode slurry supplied from the mixer; allocating and recording lot information of the electrode slurry supplied to each tank when the electrode slurry is sequentially transferred through the plurality of tanks; and detecting lot information of a final supply tank that supplies electrode slurry to the coater by referring to the history of lot information recorded for each tank.

[0088] A battery manufacturing system according to one embodiment disclosed herein may include a device control device (PLC) that receives specification information of at least one electrode from a first sensor, receives the position coordinates of the at least one electrode from a second sensor, and generates identification information for each of the at least one electrode based on the specification information and the position coordinates; an inspection device that inspects the at least one electrode and generates inspection information; and a controller that matches and manages the identification information and the inspection information of the at least one electrode.

[0089] According to an embodiment, the equipment control device receives a quantity count value of the at least one electrode from the first sensor according to the length of the at least one electrode tab, and the quantity count value of the electrode may include a BCD (Binary Coded Decimal) code.

[0090] According to an embodiment, the equipment control device may receive roll map coordinates of the at least one electrode from an encoder installed in a rewinder provided in a notching device that notches the at least one electrode.

[0091] According to an embodiment, the equipment control device may generate an ID for each of the at least one electrode based on the specification information and the roll map coordinates of at least one positive electrode tab.

[0092] According to an embodiment, the inspection device may receive the standard information of the at least one electrode from the first sensor and add the standard information to the inspection information of the at least one electrode.

[0093] According to an embodiment, the controller may manage the ID of the at least one electrode and the test information of the at least one electrode in a consistent manner.

[0094] According to an embodiment, the controller may match the ID of the at least one electrode and the test information of the at least one electrode to generate integrated test information of the at least one electrode, and transmit the integrated test information to a server.

[0095] A battery manufacturing method according to one embodiment disclosed herein includes the steps of receiving specification information of at least one electrode from a first sensor, receiving the position coordinates of the at least one electrode from a second sensor, generating identification information for each of the at least one electrode based on the specification information and the position coordinates, inspecting the at least one electrode to generate inspection information, and matching and managing the identification information and the inspection information of the at least one electrode.

[0096] According to an embodiment, the step of receiving specification information of at least one electrode from the first sensor includes receiving a quantity count value of the at least one electrode from the first sensor according to a length of the at least one electrode tab, and the quantity count value of the electrode may include a BCD code.

[0097] According to an embodiment, the step of receiving the position coordinates of the at least one electrode from the second sensor may receive roll map coordinates of the at least one electrode from an encoder installed in a rewinder provided in a notching device that notches the at least one electrode.

[0098] According to an embodiment, the step of generating identification information for each of the at least one electrode based on the specification information and the position coordinates may generate an ID for each of the at least one electrode based on the specification information and the roll map coordinates of at least one positive electrode tab.

[0099] According to an embodiment, the step of inspecting the at least one electrode and generating inspection information may include receiving the standard information of the at least one electrode from the first sensor and adding the standard information to the inspection information of the at least one electrode.

[0100] According to an embodiment, the step including managing the identification information and the test information of the at least one electrode in a consistent manner may manage the ID of the at least one electrode and the test information of the at least one electrode in a consistent manner.

[0101] According to an embodiment, the step of matching and managing the identification information and the test information of the at least one electrode may match the ID of the at least one electrode and the test information of the at least one electrode to generate integrated test information of the at least one electrode, and transmit the integrated test information to a server.

[0102] A battery manufacturing method according to an embodiment of the present invention may include generating a virtual ID corresponding to a battery cell; shifting the virtual ID according to progress of a process for the battery cell; matching and storing the shifted virtual ID with process data generated for the battery cell; extracting a cell ID for the battery cell; and matching the process data matched with the virtual ID corresponding to the cell ID with the cell ID and transmitting the matched process data to a higher-level control system.

[0103] According to one embodiment, after the step of generating the virtual ID, the method may further include a step of matching process step information indicating a process being performed on the battery cell with the virtual ID.

[0104] According to one embodiment, shifting the virtual ID may include changing process step information associated with the virtual ID when a process being performed on the battery cell is changed.

[0105] According to one embodiment, the process data may include process operation results and / or test results for the battery cell.

[0106] According to an embodiment, extracting the cell ID for the battery cell may include reading the cell ID in the form of a barcode attached to the battery cell.

[0107] According to an embodiment, the process data matched with the cell ID may be process data collected in time series for each process performed on the battery cell.

[0108] According to one embodiment, the process for the battery cell may include an NDD process and / or a lamination process.

[0109] A battery manufacturing system according to an embodiment of the present invention may include a virtual ID generation unit that generates a virtual ID corresponding to a battery cell; a virtual ID management unit that shifts the virtual ID according to progress of a process for the battery cell; a process data collection unit that matches and stores the shifted virtual ID with process data generated for the battery cell; and a main control unit that matches the process data corresponding to the virtual ID corresponding to a cell ID extracted from the battery cell with the cell ID, thereby generating process information.

[0110] After the virtual ID is generated, the virtual ID management unit may match process stage information indicating a process being performed on the battery cell with the virtual ID.

[0111] According to an embodiment, the virtual ID management unit If the process being performed on the battery cell is changed, the process stage information that matches the virtual ID may be changed.

[0112] According to an embodiment, the process data may include process work results and / or test results for the battery cell.

[0113] According to an embodiment, the process data that matches the cell ID may be process data that is collected in time series for each process performed on the battery cell.

[0114] According to an embodiment, the process for the battery cell may include an NDD process and / or a lamination process.

[0115] According to an embodiment, the apparatus may further include a communication unit that transmits the process information to a higher-level control system.

[0116] A battery manufacturing system according to another aspect of the present invention includes: a first roll map creation unit that creates a first roll map for at least one process, the first roll map including coordinate value data indicating positions of electrodes and first data among process data that is generated in accordance with progress of a process performed on the electrodes and matches the coordinate value data; and a second roll map creation unit that creates, for at least one process, a second roll map that includes the coordinate value data and first data of the first roll map and further includes second data associated with the first data among the process data.

[0117] The above process data is Equipment data acquired from each process equipment, process-related inspection and / or metrology data obtained at each process; It may include at least one of the time series data acquired in each step.

[0118] The first data and the second data may correspond to the same coordinate value data.

[0119] The second data is as follows: 1) Data with a larger capacity than the first data 2) Processed data of the first data 3) Data of a different type from the first data The data can be one of the following:

[0120] The battery manufacturing system may include a server unit that stores the second data and transmits the second data to the second roll map creation unit.

[0121] At least one of data relating to the specifications of input materials for electrode manufacturing, process data relating to the mixing process of the input materials, and route data relating to the transport route for transporting the mixed input materials to the electrode coater can be managed by matching it with the coordinate value data of the first roll map and / or the second roll map and data that matches the coordinate value data.

[0122] The battery manufacturing system of the present invention also includes: 1) Matching the coordinate values ​​of the first roll map of the preceding process with the coordinate values ​​of the first roll map of the following process so that the real electrodes represented by the first roll map of the preceding process correspond to the real electrodes represented by the first roll map of the following process; 2) Matching the coordinate values ​​of the first roll map of each process with the coordinate values ​​of the first roll map of the final process so that the real electrodes represented by the first roll map of the final process among the plurality of processes correspond to the real electrodes represented by the first roll maps of each process preceding the final process; The role map matching unit may include a role map matching unit that performs at least one of the following:

[0123] The battery manufacturing system of the present invention also includes: 1) making the coordinate values ​​of the second roll map of the preceding process coincide with the coordinate values ​​of the second roll map of the following process so that the real electrodes represented by the second roll map of the preceding process correspond to the real electrodes represented by the second roll map of the following process; 2) matching the coordinate values ​​of the second roll map of each process with the coordinate values ​​of the second roll map of the final process so that the real electrodes represented by the second roll map of the final process among the plurality of processes correspond to the real electrodes represented by the second roll maps of each process preceding the final process; The role map matching unit may include a role map matching unit that performs at least one of the following:

[0124] In another aspect of the present invention, a method for manufacturing a battery includes: creating a first roll map for at least one process, the first roll map including coordinate value data indicating the position of the electrode and first data among process data that coincides with the coordinate value data and is generated in accordance with the progress of the process performed on the electrode; storing second data associated with the first data among the process data; and creating a second roll map for at least one process, the second roll map including the second data in addition to the coordinate value data and the first data of the first roll map, by matching the second data with the coordinate value data.

[0125] In another aspect of the present invention, a battery manufacturing system includes: a roll map creation unit that creates, for each process, a roll map including coordinate value data indicating the position of the electrode and process data that is generated in accordance with the progress of the process performed on the electrode and that coincides with the coordinate value data; 1) The coordinate values ​​of the roll map of the preceding process are made to match the coordinate values ​​of the roll map of the following process so that the actual electrodes represented by the roll map of the preceding process correspond to the actual electrodes represented by the roll map of the following process; 2) Matching the coordinate values ​​of the roll map of each process with the coordinate values ​​of the roll map of the final process so that the actual electrodes represented by the roll map of the final process among the multiple processes correspond to the actual electrodes represented by the roll maps of each process preceding the final process; and a role map matching unit that performs at least one of the above.

[0126] The role map creation unit An absolute coordinate roll map showing the coordinate values ​​of the electrode parts removed during each process, between processes, or after the final process, and the coordinate values ​​of the surviving electrode parts excluding the removed electrode parts on the roll map. At least one relative coordinate roll map may be created that shows only the coordinate values ​​of the surviving electrode portions excluding the removed electrode portions on the roll map.

[0127] The role map matching unit is 1) Matching the coordinate values ​​of the relative coordinate roll map of the preceding process with the coordinate values ​​of the relative coordinate roll map of the following process; 2) matching the coordinate values ​​of the relative coordinate roll map of each process before the final process among the plurality of processes with the coordinate values ​​of the relative coordinate roll map of the final process; At least one of the following may be performed.

[0128] The role map matching unit is a) Roll map length matching to match the length of the roll map of the preceding process with the length of the roll map of the following process; b) Coordinate axis matching to match the roll map coordinate start direction of the preceding process with the roll map coordinate start direction of the following process; c) electrode surface matching for matching a roll map of an electrode surface of a subsequent process with a roll map of an electrode surface of a preceding process corresponding to the electrode surface of the subsequent process; At least one of the following may be matched:

[0129] The role map matching unit is Role maps for subsequent processes, The roll map of the preceding process that matches the roll map of the following process can be arranged side by side and represented as an overlay roll map.

[0130] The role map matching unit is a)' Roll map length matching to match the roll map length of each process with the roll map length of the final process; b)' Coordinate axis matching to match the roll map coordinate start direction of each process with the roll map coordinate start direction of the final process; c)' electrode surface matching for matching a roll map for the electrode surface of the final process with a roll map for the electrode surface of each process corresponding to the electrode surface of the final process; At least one of the following may be matched:

[0131] The role map matching unit is The roll map of the final process and the roll maps of each process that match the roll map of the final process can be arranged side by side and expressed as an overlay roll map.

[0132] The role map creation unit a first roll map creation unit that creates a first roll map including coordinate value data indicating the position of an electrode and first data among process data that is generated in accordance with the progress of a process performed on the electrode and that matches the coordinate value data; The role map matching unit is The coordinate values ​​of the first roll map of the preceding process and the first roll map of the following process are matched, or The coordinate values ​​of the first roll map of each process among the plurality of processes can be made to match the coordinate values ​​of the first roll map of the final process.

[0133] The role map creation unit a second roll map creating unit that creates a second roll map including data of the first roll map and further including second data among the process data that is related to the first data and matches the coordinate values; The role map matching unit is Match the coordinate values ​​of the second roll map of the preceding process with the second roll map of the following process, or The coordinate values ​​of the second roll map of each of the plurality of processes can be made to match the coordinate values ​​of the second roll map of the final process.

[0134] The battery manufacturing system includes: The data of the subsequent process that matches the coordinate values ​​of the roll map of the subsequent process is matched with the data of the preceding process that matches the coordinate values ​​of the preceding process that matches the coordinate values ​​of the roll map of the subsequent process, and the data is managed accordingly; or The final process data that matches the coordinate values ​​of the roll map of the final process can be managed by matching it with the process data of each process that matches the coordinate values ​​of each process that match the coordinate values ​​of the roll map of the final process.

[0135] The battery manufacturing system of the present invention can manage at least one of data regarding the specifications of input materials for electrode manufacturing, process data regarding the mixing process of the input materials, and route data regarding the transport route for transporting the mixed input materials to the electrode coater by matching it with each matched coordinate value of the overlay roll map and the process data of each process that matches the above coordinate values.

[0136] A battery manufacturing method according to another aspect of the present invention includes: creating a roll map for each process, the roll map including coordinate value data indicating the position of the electrode and process data that is generated in accordance with the progress of a plurality of processes performed on the electrode and that matches the coordinate value data; 1) The coordinate values ​​of the roll map of the preceding process are made to match the coordinate values ​​of the roll map of the following process so that the actual electrodes represented by the roll map of the preceding process correspond to the actual electrodes represented by the roll map of the following process; 2) Matching the coordinate values ​​of the roll map of each process with the coordinate values ​​of the roll map of the final process so that the actual electrodes represented by the roll map of the final process among the multiple processes correspond to the actual electrodes represented by the roll maps of each process preceding the final process; and performing matching of at least one of the above.

[0137] According to another aspect of the present invention, there is provided a computer-readable recording medium including at least one of the first role map and / or the second role map.

[0138] According to another aspect of the present invention, there is provided a computer-readable recording medium containing the above role map and / or overlay role map.

[0139] A battery manufacturing system according to another aspect of the present invention includes: a coordinate value data server storing coordinate values ​​indicating the position of the electrode that moves during a process performed on the electrode; an identification marking device that applies identification marks to the electrodes at predetermined intervals; and a data management server that manages the coordinate values ​​of the coordinate value data server corresponding to the identification signs by matching them with the identification signs.

[0140] The coordinate values ​​may be roll map coordinate values ​​displayed on a roll map that represents the electrodes moving between the unwinder and rewinder.

[0141] The coordinate value data server may store the roll map coordinate values ​​of the preceding process and the roll map coordinate values ​​of the following process in a matched manner, or may store the roll map coordinate values ​​of each process among a plurality of processes in a matched manner with the roll map coordinate values ​​of the final process.

[0142] The coordinate value data server may store process data that matches the roll map coordinate values.

[0143] The coordinate data server includes: a) a first roll map including coordinate value data indicating the position of an electrode and first data among process data that is generated in accordance with the progress of a process performed on the electrode and that matches the coordinate value data; b) a second role map including the coordinate value data of the first role map and the first data, and further including second data associated with the first data; c) an overlay roll map in which roll maps of preceding and succeeding processes are arranged side by side so that the roll map coordinate values ​​match each other; d) an overlay roll map in which the roll maps of each process are arranged side by side, with the roll map coordinate values ​​of each process being matched with the roll map coordinate values ​​of the final process; One or more of the following may be saved.

[0144] The coordinate data server includes: At least one of roll map coordinate values ​​indicating the position of the electrode that moves in the process of applying the identification mark, roll map coordinate values ​​indicating the position of the electrode that moves in one or more preceding processes before the process of applying the identification mark, and process data of each process that matches the roll map coordinate values ​​may be stored.

[0145] The identification markings may be applied to the electrode tab portions after the notching process that forms the electrode tabs for the electrodes.

[0146] The identification mark may be an electrode ID that is actually marked on the electrode, or a virtual electrode ID that is virtually assigned to the electrode at a predetermined pitch.

[0147] The identification mark applying device may be an ID marking machine that marks electrode IDs on electrodes at predetermined intervals.

[0148] A first position coordinate value corresponding to the electrode ID may be obtained from a coordinate value received by a position measurement sensor when marking the electrode ID or recognizing the marked ID.

[0149] The data management server can match and manage the first position coordinate value corresponding to the electrode ID with the corresponding coordinate value of the coordinate value data server and / or process data that matches the coordinate value.

[0150] The identification marking device may be an equipment control device that receives specification information for at least one electrode from a first sensor, receives position coordinate values ​​for at least one electrode from a second sensor that is a position measurement sensor, and generates a virtual electrode ID for each of the at least one electrode based on the specification information and the position coordinate values.

[0151] the equipment control device receives a quantity count value of the at least one electrode from the first sensor according to a length of the at least one electrode tab; The electrode quantity count value may include a BCD (Binary Coded Dedcimal) code.

[0152] The data management server can match and manage position coordinate values ​​corresponding to the virtual electrode ID with the corresponding coordinate values ​​of the coordinate value data server and / or process data that coincide with the coordinate values.

[0153] The data management server may manage subsequent process data for at least one process that is generated in accordance with the progress of a subsequent process for an electrode that includes the identification mark and that matches the identification mark, by matching it with the coordinate values ​​of the coordinate value data server and / or process data that matches the coordinate values.

[0154] The apparatus may further include a subsequent process data matching unit that matches the identification mark with the at least one subsequent process data.

[0155] The subsequent process data matching unit may assign a super-assembly including the electrode to which the identification mark is assigned a super-assembly identification mark that matches the electrode identification mark.

[0156] The upper assembly may be at least one of an electrode assembly including the electrode to which the identification mark is applied, a battery cell semi-finished product including the electrode assembly, a battery cell including the electrode assembly, a battery cell stack including the battery cell or a battery module including the battery cell stack, and a battery pack including the battery cell stack or battery module.

[0157] The data management server At least one of data relating to the specifications of input materials for electrode manufacturing, process data relating to the mixing process of the input materials, and route data relating to the transport route for transporting the mixed input materials to the electrode coater can be managed by matching it with the identification mark and the coordinate values ​​of the coordinate value data server.

[0158] According to another aspect of the present invention, a method for manufacturing a battery includes: acquiring coordinate value data indicating the position of the electrode that is moved during the process; providing identification marks at predetermined intervals on the electrodes; and managing the identification markers by matching the coordinate values ​​corresponding to the identification markers with the identification markers.

[0159] Based on the above coordinate values ​​and identification signs, The process data that matches the coordinate values ​​and the subsequent process data that matches the identification mark can be managed in a consistent manner.

[0160] The present invention also provides an electrode comprising the above electrode identification mark.

[0161] The present invention also provides an upper assembly including the above-described electrode.

[0162] The superior assembly may further include superior identification markings that match the electrode identification markings.

[0163] Specifically, the electrode may include an electrode identification marker that matches at least one of roll map coordinate values ​​indicating the location of the electrode and process data that matches the roll map coordinate values.

[0164] By matching the electrode identification mark with the subsequent process data, the subsequent process data can be matched with the process data that matches the roll map coordinate values ​​based on the electrode identification mark and the roll map coordinate values. [Effects of the Invention]

[0165] The present invention can display data regarding quality or defects on a roll map bar that shows a replica of an electrode in a roll-to-roll state, so that data regarding quality or defects in the electrode manufacturing process can be visually and easily grasped at a glance.

[0166] Furthermore, since the present invention displays data on quality or defects on the roll map bar without directly marking the electrodes or secondary batteries, data on quality or defects can be accurately displayed on both unmarked and marked areas.

[0167] Furthermore, since the data is displayed on the roll map without directly marking the electrode or the battery, even if the electrode is assembled in a subsequent process or manufactured into a battery, the cause of subsequent defects or failures can be easily identified from the roll map data of the electrode as long as the lot number of the battery or electrode is known, for example, and quality correlation analysis between processes can be performed with high accuracy.

[0168] According to an embodiment of the present invention, the amount and position of electrode loss can be accurately determined using reference points during an electrode manufacturing process. Furthermore, since the amount of electrode loss is measured automatically and accurately without relying on the naked eye or intuition of an operator, the reliability of the loss amount data is improved, and such data information can be effectively used in subsequent processes.

[0169] Furthermore, the present invention displays the reference points on a roll map that replicates the electrodes, and also displays information regarding the amount of electrode loss, thereby making it possible to visually and easily grasp data regarding quality and defects at a glance in relation to the reference points.

[0170] Furthermore, since the roll map showing the reference points can be referenced during quality control, defect management, and subsequent process processing in each detailed process of the electrode manufacturing process, subsequent process processing and defect removal can be performed accurately.

[0171] According to one embodiment of the present invention, a roll map can be provided that allows events and data relating to the quality or defects of each detailed process of an electrode manufacturing process in which electrodes are moved in a roll-to-roll manner to be visually understood at a glance.

[0172] Furthermore, by correcting the roll map coordinates of the previous process, the roll map of the previous process can be used in the subsequent process without any errors.

[0173] Furthermore, by using the roll map information, defects occurring in a previous process can be reliably and easily eliminated in a subsequent process without omission.

[0174] According to one embodiment of the present invention, in a series of roll-to-roll processes, by matching the coordinate values ​​of the roll map of each process with the coordinate values ​​of the final process, data regarding the quality or defects of surviving electrodes that have survived the final process can be easily obtained.

[0175] In addition, the inspection history of the electrode manufacturing process can be easily understood using such a matched roll map.

[0176] Furthermore, according to one embodiment of the present invention, even if the start and end of an electrode roll are reversed or the front and back sides are reversed through a series of roll-to-roll processes, an overlay roll map can be created by roll map matching using a predetermined logic, so that if there is a problem with the quality of the electrode, it can be quickly and intuitively tracked.

[0177] According to one embodiment of the present invention, the position of the electrode from which the unit electrode of the notching process originates in the electrode manufacturing process before the notching process can be tracked.

[0178] In addition, since it is possible to determine which electrode in the electrode manufacturing process the unit electrode manufactured in the notching process originated from, defect cause analysis and quality tracking of semi-finished and finished battery cells in subsequent processes can be performed on a cell-by-cell basis up to the electrode manufacturing process.

[0179] According to an embodiment of the present invention, lot information of the electrode slurry at the supply tank stage can be obtained, thereby making it possible to track the quality of the electrode slurry produced from the supply tank.

[0180] Furthermore, when an electrode defect or a failure occurs in a battery manufactured using the electrode, it is possible to determine which lot of electrode slurry was used to manufacture the battery, making it easy to determine the cause of the defect or failure.

[0181] According to the battery manufacturing system and its operating method according to an embodiment disclosed in this specification, a virtual ID can be issued based on the specification information of the positive electrode, thereby ensuring the traceability of the positive electrode data.

[0182] According to an embodiment of the battery manufacturing method and battery manufacturing system disclosed in this specification, the reliability of battery quality analysis can be improved by accurate matching between process data and the battery.

[0183] The present invention can effectively distribute the data required for role mapping and reduce the data load on the role mapping unit, thereby improving the data processing speed of the role mapping system and managing role mapping-related data more effectively.

[0184] In addition, by matching the coordinate values ​​of the roll map created between processes with the process data, it is possible to compare the changes in the actual electrode as multiple processes proceed on a uniform basis. Using such matched roll maps, it is possible to easily understand the inspection history and changes in equipment data during the electrode manufacturing process.

[0185] According to the present invention, the quality of the electrodes and the upper assembly including the electrodes can be easily managed based on the identification marks and electrode coordinate values ​​not only in the electrode manufacturing process and assembly process but also in subsequent processes after assembly.

[0186] Furthermore, by linking the identification markers with coordinate values, roll map data information and process data for subsequent processes can be managed in a consistent manner, making it possible to track the quality of all processes from the electrode manufacturing process to the final process.

[0187] In addition, various other effects may be provided that are directly or indirectly grasped by this specification. [Brief explanation of the drawings]

[0188] [Figure 1] FIG. 10 is a schematic diagram showing changes in risk ranges due to quality correlation analysis between the electrode manufacturing process and the final product. [Figure 2] 1 is a schematic diagram of a role map creation device according to an embodiment of the present invention. [Figure 3] 1 is a schematic diagram illustrating the principle of acquiring inspection and / or measurement data and coordinate values ​​of the data by an inspection and / or measurement instrument. [Figure 4] FIG. 2 is a schematic diagram of a data visualization device provided in the role map creation device. [Figure 5] 1 is a schematic diagram showing an example of a role map generated by the role map generation device of the present invention. [Figure 6] 1 is a flowchart illustrating an embodiment of a role map creation method according to the present invention. [Figure 7] FIG. 2 is a schematic diagram of a role map according to one embodiment of the present invention. [Figure 8] FIG. 10 is a schematic diagram of a roll map according to another embodiment of the present invention. [Figure 9] FIG. 10 is a schematic diagram showing that distortion occurs in position coordinates when loss occurs in an electrode without a reference point. [Figure 10] 1 is a diagram illustrating the concept of the present invention in which a reference point is introduced to prevent distortion of position coordinates. [Figure 11] 1 is a schematic diagram of an electrode loss amount measuring device according to an embodiment of the present invention. [Figure 12] FIG. 2 is a schematic diagram showing an example of electrode loss amount measurement according to the present invention. [Figure 13] FIG. 10 is a schematic diagram showing another example of electrode loss amount measurement according to the present invention. [Figure 14] FIG. 10 is a schematic diagram showing another example of electrode loss amount measurement according to the present invention. [Figure 15] FIG. 10 is a schematic diagram showing how the reference point changes during the roll press process. [Figure 16]FIG. 10 is a schematic diagram of an electrode loss amount measuring device according to another embodiment of the present invention. [Figure 17] FIG. 2 is a schematic diagram showing an example of a roll map of an electrode manufacturing process according to the present invention. [Figure 18] 1 is a schematic diagram of a roll map creation device according to the present invention. [Figure 19] FIG. 10 is a schematic diagram illustrating a roll map correction system according to another embodiment of the present invention. [Figure 20] 1 is a schematic diagram showing an example of a roll map coordinate change caused by the roll map correction system of the present invention; [Figure 21] 10A and 10B are schematic diagrams illustrating another example of roll map coordinate changes caused by the roll map correction system of the present invention. [Figure 22] FIG. 10 is a schematic diagram showing how defects generated in the electrode coating process are removed in a subsequent roll press process. [Figure 23] FIG. 10 is a schematic diagram showing the concept of an electrode defect removal device according to another embodiment of the present invention. [Figure 24] 1 is a schematic diagram showing an electrode defect removal device of the present invention. [Figure 25] 3A to 3C are schematic diagrams showing the state of an electrode during an electrode manufacturing process. [Figure 26] 1 is a schematic diagram of one embodiment of a role map creation system of the present invention; [Figure 27] FIG. 2 is a schematic diagram showing an example of a roll map creating device and a roll map in an electrode coating process. [Figure 28] 1 is a schematic diagram illustrating the principle of acquiring inspection data by an inspection instrument and coordinate values ​​of the inspection data. [Figure 29] FIG. 2 is a schematic diagram illustrating an example of a role map creation unit. [Figure 30] FIG. 1 is a schematic diagram showing roll maps of the top and bottom surfaces of an electrode. [Figure 31] 10A and 10B are schematic diagrams showing electrode reversal modes according to the winding direction in the preceding process and the unwinding direction in the following process. [Figure 32] FIG. 10 is a schematic diagram showing that the coordinate axes of the roll map are reversed in the preceding and following steps. [Figure 33] FIG. 2 is a schematic diagram showing an example of a roll map creation device and a roll map in a roll press process. [Figure 34] FIG. 10 is a schematic diagram showing a roll map when an electrode is removed after the roll press process is completed. [Figure 35] FIG. 10 is a schematic diagram showing an example of a roll map creation device and a roll map in a notching process. [Figure 36] 1 is a schematic diagram illustrating a role map matching process according to the present invention; [Figure 37] 1 is a schematic diagram illustrating a role map matching process according to the present invention; [Figure 38] 1 is a schematic diagram illustrating a role map matching process according to the present invention; [Figure 39] FIG. 1 is a schematic diagram illustrating a series of roll-to-roll processes and overlay roll maps for the process according to one embodiment. [Figure 40] FIG. 1 is a schematic diagram illustrating a series of roll-to-roll processes and overlay roll maps for the process according to one embodiment. [Figure 41] FIG. 1 is a schematic diagram illustrating a series of roll-to-roll processes and overlay roll maps for the process according to one embodiment. [Figure 42] FIG. 10 is a schematic diagram illustrating a series of roll-to-roll processes and overlay roll maps for the processes according to another embodiment. [Figure 43] FIG. 10 is a schematic diagram illustrating a series of roll-to-roll processes and overlay roll maps for the processes according to another embodiment. [Figure 44] 1 shows a roll map of the electrode manufacturing process. [Figure 45] 1 is a block diagram illustrating a battery manufacturing system according to the present invention. [Figure 46] 4 is a schematic diagram illustrating a notching process controlled by a notching control unit in the battery manufacturing system of the present invention. FIG. [Figure 47]FIG. 10 is a schematic diagram illustrating a process for deriving the removal length when an electrode is removed during a notching process. [Figure 48] 1 is a schematic diagram illustrating an electrode position tracking process of a battery manufacturing system according to an embodiment of the present invention. [Figure 49] FIG. 1 is a schematic diagram showing the electrode being stretched in a roll press process after electrode coating. [Figure 50] FIG. 10 is a schematic diagram illustrating an electrode position tracking process of a battery manufacturing system according to another embodiment of the present invention. [Figure 51] FIG. 1 is a schematic diagram showing slurry transfer between multiple tanks installed between a mixer and a coater. [Figure 52] FIG. 1 is a schematic diagram showing the difference between the prior art and the electrode slurry lot information tracking management mechanism of the present invention. [Figure 53] 1 is a block diagram illustrating a battery manufacturing system according to an embodiment of the present invention. [Figure 54] 1 is a schematic diagram showing the process of allocating and recording lot information of electrode slurry according to the present invention; [Figure 55] FIG. 2 is a schematic diagram illustrating a battery manufacturing system according to another embodiment of the present invention. [Figure 56] 1 is a diagram for generally explaining a battery processing system according to an embodiment disclosed herein; [Figure 57] 1 is a block diagram illustrating a configuration of a battery manufacturing system according to an embodiment disclosed in this specification. [Figure 58] 1 is a diagram illustrating a notching process according to an embodiment disclosed in the present specification; [Figure 59] 1 is a diagram illustrating roll map coordinates according to one embodiment disclosed herein. [Figure 60] 1 is a diagram illustrating integrated test data according to one embodiment disclosed herein. [Figure 61] 1 is a flowchart illustrating a battery manufacturing method according to one embodiment disclosed herein. [Figure 62]FIG. 2 is a block diagram illustrating a hardware configuration of a computing system that implements an embodiment of a battery manufacturing system disclosed in this specification. [Figure 63] FIG. 1 is a block diagram illustrating a battery manufacturing system and a higher-level control system according to one embodiment disclosed herein. [Figure 64] 64 is a diagram illustrating a process flow performed in the battery manufacturing system of FIG. 63. [Figure 65] FIG. 64 is a block diagram showing the configuration of a process controller that controls the battery manufacturing system of FIG. 63. [Figure 66] 64 is a diagram for explaining a method of processing process data collected in the battery manufacturing system of FIG. 63. [Figure 67] 2 is a flowchart illustrating a battery manufacturing method according to an embodiment of the present invention. [Figure 68] FIG. 2 is a block diagram illustrating a hardware configuration of a computing system for performing an embodiment of a method for operating a battery manufacturing system disclosed in this specification. [Figure 69] 1 is a configuration diagram of a battery manufacturing system according to an embodiment of the present invention. [Figure 70] FIG. 10 is a schematic diagram illustrating the creation of a first roll map in the electrode manufacturing process and the notching process. [Figure 71] FIG. 2 is a schematic diagram of a visualization device included in a first role map creation unit. [Figure 72] 3 is a data flow chart of a battery manufacturing system according to an embodiment of the present invention. [Figure 73] 3 is a schematic diagram showing an example of a first role map and a second role map. FIG. [Figure 74] 10A and 10B are schematic diagrams showing other examples of the first role map and the second role map. [Figure 75] 1 is a flowchart of a battery manufacturing method according to an embodiment of the present invention. [Figure 76] FIG. 2 is a schematic diagram of a roll map matching unit included in the battery manufacturing system. [Figure 77] 10 is a schematic diagram illustrating a roll map length and coordinate axis matching process performed by a roll map matching unit; [Figure 78] FIG. 10 is a schematic diagram showing the electrode surface inversion between the preceding and succeeding steps. [Figure 79] FIG. 10 is a schematic diagram illustrating an example of an overlay role map. [Figure 80] 1 is a flowchart of a battery manufacturing method according to an embodiment of the present invention. [Figure 81] FIG. 2 is a schematic diagram showing an example of data matching by the battery manufacturing system of the present invention. [Figure 82] FIG. 10 is a configuration diagram of a battery manufacturing system according to another embodiment of the present invention. [Figure 83] 10 is a schematic diagram showing a process of adding an identification mark to an electrode. FIG. [Figure 84] 10 is a schematic diagram showing the process of providing a virtual identification mark to an electrode. FIG. [Figure 85] 10 is a schematic diagram showing the process of providing a virtual identification mark to an electrode. FIG. [Figure 86] 10 is a data flow chart of a battery manufacturing system according to another embodiment of the present invention. [Figure 87] FIG. 10 is a schematic diagram of a subsequent process data matching unit. [Figure 88] 4 is a flowchart of a battery manufacturing method according to another embodiment of the present invention. [Figure 89] FIG. 2 is a schematic diagram showing an example of data matching by the battery manufacturing system of the present invention. [Figure 90] 1 is a schematic diagram illustrating an electrode tracking process according to the battery manufacturing system of the present invention; [Figure 91] FIG. 1 is a schematic diagram of an electrode and electrode assembly with electrode identification markings. [Figure 92] FIG. 1 is a schematic diagram of a folding cell, stack cell with electrode identification markings. [Figure 93] FIG. 1 is a schematic diagram of a packaging cell with electrode identification marks. [Figure 94] FIG. 1 is a schematic diagram of a battery cell with electrode identification marks. [Figure 95] 10 is a schematic diagram of another type of battery cell with electrode identification marks. FIG. [Figure 96] FIG. 2 is a schematic diagram of a battery module and a battery pack. DETAILED DESCRIPTION OF THE INVENTION

[0189] The detailed configuration of the present invention will be described in detail below with reference to the accompanying drawings and various embodiments. The embodiments described below are illustratively shown to facilitate understanding of the present invention, and the accompanying drawings are not drawn to scale, and the dimensions of some components may be exaggerated to facilitate understanding of the invention.

[0190] The present invention can be modified in various ways and can have various embodiments, and therefore, specific embodiments are illustrated in the drawings and described in detail herein. However, this is not intended to limit the present invention to the specific disclosed form, and it is understood that the present invention includes all modifications, equivalents, and alternatives falling within the spirit and technical scope of the present invention.

[0191] FIG. 1 is a schematic diagram showing the change in risk range due to quality correlation analysis between the electrode manufacturing process and the final product.

[0192] As shown in Figure 1(a), a final product (secondary battery) is manufactured from a product (electrode) produced in an electrode manufacturing process. When a defect occurs in a final product, it is often necessary to ascertain its manufacturing history to determine the cause of the defect. However, if there is no or insufficient information about the manufacturing history of the product in the electrode manufacturing process, it is difficult to determine which process produced the defective final product. Therefore, in order to prevent the same defect from occurring again, it may be necessary to discard not only the defective product but also other non-defective final products as they are included in the risk range where a defect risk may occur.

[0193] On the other hand, if there is sufficient information about the manufacturing history of products in the electrode manufacturing process, the risk range can be narrowed based on that information, as shown in Figure 1(b), thereby reducing the number of non-defective products that must be discarded.In particular, because electrodes are manufactured through various processes such as coating, roll pressing, and slitting, if product history information for each process is not clearly recorded or stored, it can be difficult to identify the cause of defects in the relationship between subsequent processes.

[0194] Therefore, there is a need for the development of a technology that can record information about product quality and defects in the electrode manufacturing process and trace and analyze the quality correlation in relation to subsequent processes or the final product.

[0195] Furthermore, as described above, displaying defect information directly on the electrode coated with electrode slurry is limited in displaying all defect information due to physical limitations of the electrode space. Furthermore, information on the quality of each process, even if not a defect, may be necessary to understand the cause of unexpected defects that occur in subsequent processes or during use of the finished secondary battery.

[0196] Therefore, the inventors developed a roll map that displays information about defects in the electrode manufacturing process as well as other quality-related data or information in a bar-shaped space that replicates the electrode, rather than displaying it directly on the electrode. This roll map displays various data and information in the space and can be used for quality analysis and management during electrode manufacturing. It also overcomes the limitations of conventional technology for quality tracking and can be used to analyze the quality correlation between each process.

[0197] FIG. 2 is a schematic diagram of a roll map creation device according to one embodiment of the present invention, and FIG. 3 is a schematic diagram showing the principle of acquiring inspection and / or measurement data by an inspection and / or measurement instrument and the coordinate values ​​of the data.

[0198] The roll map creation device 100 of the present invention includes an inspection and / or measuring instrument 10 that inspects and / or measures an electrode 1 that moves between an unwinder UW and a rewinder RW to obtain inspection and / or measurement data, and a roll map creation unit 40 that creates a roll map that is represented in a planar shape that replicates the moving electrode and displays at least a portion of the inspection and / or measurement data.

[0199] The test and / or meter 10 may test the electrode 1 as it moves between the unwinder and rewinder to obtain test and / or meter data.

[0200] In order to measure the quality or defects of the electrode 1 in each detailed process adjacent to the upper or lower part of the electrode line moving in a roll-to-roll state, a predetermined inspection and / or measuring instrument 10 is arranged in the electrode manufacturing process.

[0201] The inspection and / or measurement device 10 may inspect and / or measure the electrode 1 to obtain inspection and / or measurement data. The inspection and / or measurement device is connected to a position measurement device 20 (described later) via wire or wirelessly, and may obtain the inspection and / or measurement data as well as coordinate values ​​(coordinate data) of the electrode 1 from which the inspection and / or measurement data was obtained. Alternatively, the electrode coordinate values ​​transmitted to the control unit 30 (described later) may be matched with the inspection and / or measurement data.

[0202] The above-mentioned "test and / or measurement instrument" refers to any one or all of the following, depending on the purpose of measurement: test instrument, measurement instrument, and test and measurement instrument. Also, the above-mentioned test and / or measurement data refers to any one or all of the following: test data, measurement data, and test / measurement data. As a result, test and / or measurement data refers to all data that can be obtained through testing or measuring electrodes. Also, test and / or measurement instrument refers to all devices that test or measure electrodes to obtain specific test and / or measurement data.

[0203] The inspection and / or measurement data of the electrode 1 referred to in the present invention may include data related to the quality or defects of the electrode 1. For example, measurement data related to the amount of slurry loaded when coating electrode slurry in a coating process may be obtained by a loading amount measuring device 11. If the loading amount falls outside a set range, it may be determined to be defective, and a visualization device (described later) may visually display this portion separately from the rest of the electrode. Alternatively, even if the loading amount is within a normal range and not defective, the range may be visually displayed in different colors according to the amount. In this sense, the inspection and / or measurement data of the present invention is not limited to defects, but includes data related to quality.

[0204] A dimension and width measuring device may also be provided to measure dimensions and widths. The dimension and width measuring device may also display data outside a set range as defective data, or data within the normal range but divided into different dimension and width ranges, each displayed as a different visual image. The dimension and width measuring device may also obtain data regarding mismatches between coated and uncoated areas on the electrodes.

[0205] A splice measuring device may also be provided to detect the splice if an electrode breaks during the process and is then joined with a splice connecting member (connecting tape).

[0206] In addition, reference points may be marked at predetermined intervals on the electrode 1 and used to calculate the electrode breakage length, etc. A reference point measuring device 12 that detects the position of such reference points may also be provided as one of the above-mentioned inspection and / or measuring devices.

[0207] Alternatively, a thickness measuring device (web gauge) may be provided to measure the thickness of the coated electrode, for example, before and after the roll press process.

[0208] Furthermore, during the electrode manufacturing process, the electrodes can be inspected and / or data regarding quality or defects can be obtained using various inspection and / or measuring instruments 10. An electrode appearance inspector 13 can be provided to detect appearance defects such as pinholes and line defects on the electrode appearance. The inspection and / or measuring instruments 10 are not limited to those described above, and if there are other measurement parameters that can be obtained from the electrode 1, other predetermined inspection and / or measuring instruments 10 that can inspect them can also be applied to the roll map creation device 100 of the present invention.

[0209] Furthermore, the above-described inspection and / or measurement instruments 10 do not necessarily need to be provided separately, and multiple pieces of inspection data or measurement data can be obtained with a single inspection or measurement instrument. In this case, the number of required inspection and / or measurement instruments 10 can be reduced. Alternatively, multiple inspection and / or measurement instruments 10 with the same name can be provided depending on the application. That is, since the color sensor inspects the appearance as a seam measurement instrument, it can also be considered an appearance inspection instrument 13. Furthermore, since the vision measurement instrument can measure mismatches, it can be considered a dimension and width measurement instrument, but since the vision sensor included in the measurement instrument can also detect reference points, it can also be considered a reference point measurement instrument.

[0210] Specific examples of inspection and / or measurement data that can be obtained in the electrode manufacturing process can be summarized as follows: 1) Data on at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on the electrode 4) Data on electrode appearance 5) Data on the location of electrode disconnection sections or electrode connection positions 6) Data regarding the location of the sample testing unit 7) Data on the location of the electrode disposal section 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrode 11) Data on electrode thickness after roll pressing

[0211] Meanwhile, in the electrode manufacturing process, the electrode 1 is mounted between the unwinder UW and the rewinder RW. After the electrode 1 is unwound from the unwinder UW and undergoes a predetermined process, it is wound by the rewinder RW to form an electrode roll. Furthermore, after completing one process (preceding process), the electrode roll is remounted between the unwinder UW and the rewinder RW for the succeeding process and moves in a roll-to-roll fashion to undergo the subsequent process. That is, the electrode manufacturing process involves a repeated electrode movement process in which the electrode moves in a roll-to-roll fashion. Therefore, if the position of the electrode during such movement can be expressed in coordinates, the position of the electrode 1 in each process can be identified. Furthermore, if data related to quality or defects is acquired, and an event such as an electrode breakage occurs and is connected with a joint connecting member, if the position of the data acquisition unit or the joint can be displayed in coordinates, historical information related to the quality, defects, and various events of the electrode in that process can be displayed. Since electrode 1 moves in accordance with the rotation of the unwinder UW and rewinder RW, the longitudinal position of electrode 1 can be identified in accordance with the amount of rotation of the unwinder UW and / or rewinder RW. The roll map creation device of the present invention may further include a position measuring device 20 that acquires the position of the electrode in accordance with the amount of rotation of the unwinder and / or rewinder as a coordinate value. The position measuring device 20 of the present invention can acquire the longitudinal position of electrode 1 as a coordinate value (coordinate data). For example, if the coordinate acquired by the position measuring device 20 is 0, the start of electrode 1 can be identified, and if a coordinate of 1200 meters is acquired for an electrode 1 that is 1200 meters long, the end of electrode 1 can be identified.

[0212] Coordinate data of the longitudinal position of the electrode 1 can be detected by rotary encoders 20U and 20R installed on the unwinder UW and rewinder RW. Typically, the rotary encoders 20U and 20R are installed in a motor drive unit that drives the unwinder UW and rewinder RW, and can detect the electrode movement distance according to the motor rotation speed (amount of rotation). Therefore, when the electrode 1 moves between the unwinder UW and rewinder RW, the movement distance can be detected by the rotary encoders 20U and 20R. For convenience of explanation, FIG. 2 shows the unwinder encoder and rewinder encoder disposed outside the unwinder UW and rewinder RW, respectively, but the encoders can be built into the unwinder UW and rewinder RW, respectively.

[0213] The inspection and / or measurement device 10 may be connected to the position measurement device 20 by wire or wirelessly, and may acquire the coordinate values ​​of the electrode portions from which the inspection and / or measurement data was acquired. In this case, the inspection and / or measurement device 10 may transmit the inspection and / or measurement data and the coordinate values ​​to the roll map creation unit 40.

[0214] The roll map creation device 100 of the present invention may include a control unit 30 (PLC control unit) that controls electrode movement between the unwinder UW and the rewinder RW. In this case, the control unit 30 is connected to the position measurement device 20 and the inspection and / or measurement device 10, and may receive coordinate values ​​from the position measurement device and inspection and / or measurement data from the inspection and / or measurement device. The control unit 30 may match the inspection and / or measurement data with coordinate values ​​of the electrode portions from which the data was acquired, and transmit the matched data (coordinate value data and inspection and / or measurement data) to the roll map creation unit 40.

[0215] Alternatively, the control unit 30 may process the inspection and / or measurement data and coordinate value data into a form that is easy to process in the roll map creation unit 40. Since the PLC control unit 30 is connected to the inspection and / or measurement instrument 10, encoder, etc. to control the roll-to-roll transfer of the electrode, it may be more efficient in terms of data processing and management to transmit data via the control unit 30 rather than transmitting data directly from the inspection and / or measurement instrument 10, encoder, etc. to a data processing system such as an electrode MES.

[0216] Meanwhile, depending on the type of inspection and / or measurement instrument, some inspection and / or measurement instruments may be directly connected to a position measuring instrument and acquire both inspection and / or measurement data and coordinate value data. Also, some inspection and / or measurement instruments acquire only inspection and / or measurement data, and the coordinate value data corresponding to the data may be acquired by the position measuring instrument and matched by the control unit 30. In other words, the entity (location) that performs matching with the coordinate value data may vary depending on the type of inspection and / or measurement instrument, device configuration, processing capacity, etc.

[0217] On the other hand, the coordinate value of the electrode portion from which the above inspection and / or measurement data was acquired may be a value obtained by adding an offset distance, which is the distance between the inspection and / or measurement instrument 10 and the rewinder, to a coordinate value corresponding to the amount of rotation of the rewinder RW at the time the inspection and / or measurement data was acquired.

[0218] 2 and 3, when the inspection and / or measurement device 10 inspects the electrode 1 and acquires inspection data, the position of the electrode portion is detected by the position measurement device 20 of the rewinder RW. However, at the time the inspection data is acquired, the electrode portion has not yet arrived at the rewinder RW. In this embodiment, since the roll map coordinates are based on the rewinder RW, the longitudinal coordinate sensed when the electrode portion actually arrives at the rewinder RW is the longitudinal coordinate of the electrode portion. Therefore, the longitudinal coordinate value of the electrode portion from which inspection and / or measurement data is acquired must be calculated by adding the distance (offset distance) from each inspection and / or measurement device to the rewinder RW to the encoder value (longitudinal coordinate value) of the rewinder RW at the time of data acquisition. For example, the longitudinal axis coordinate value of electrode portion a, whose loading amount is sensed by the loading amount measurement device 11, is calculated by adding the encoder value (coordinate value) A of the rewinder RW at the time of sensing to the offset distance L1 between the loading amount measurement device 11 and the rewinder RW. Using the same principle, the longitudinal coordinate value of electrode portion b, whose reference point is detected by reference point measuring device 12, is the sum of the encoder value B of the rewinder RW at the time of detection and the offset distance L2 between reference point measuring device 12 and the rewinder RW. Also, the longitudinal coordinate value of electrode portion c, whose appearance is detected by appearance inspector 13, for example, is the sum of the encoder value C of the rewinder RW at the time of detection and the offset distance L3 between the appearance inspector 13 and the rewinder RW.

[0219] On the other hand, the width direction coordinate value of the electrode portion from which the inspection and / or measurement data is obtained can be obtained by the inspection and / or measurement instrument 10.

[0220] For example, an inspection and / or measuring instrument 10, such as the appearance inspector shown in FIG. 3, may be equipped with a program capable of scanning and inspecting the appearance of the electrode 1 along the entire width direction. Alternatively, the inspection and / or measuring instrument itself may be installed so as to be movable along the width direction of the electrode. Alternatively, multiple inspection and / or measuring instruments may be installed along the width direction of the electrode. This allows the inspection and / or measuring instrument 10 to obtain data related to quality or defects (e.g., loading amount data and appearance defect data) for each point in the width direction of the electrode. The inspection and / or measuring instrument 10 may also obtain data (coordinate values) of the width direction position at which the data was obtained. This allows each inspection and / or measuring instrument 10 to obtain all inspection and / or measurement data (e.g., data related to quality or defects), as well as the longitudinal and width direction coordinate values ​​of the electrode 1 at which the inspection and / or measurement data was obtained, and transmit these to the roll map creation unit 40, described below.

[0221] FIG. 4 is a schematic diagram of a data visualization device provided in the role map creation device.

[0222] The roll map creation device 100 of the present invention includes a roll map creation unit 40 that creates a roll map that is expressed in a planar shape that replicates the moving electrodes and displays at least a part of the above-mentioned test and / or measurement data.

[0223] The roll map creating unit 40 can display the coordinate values ​​and at least a portion of the test and / or measurement data on a roll map. The roll map creating unit 40 can also display reference points marked on the electrodes at predetermined intervals at positions on the roll map that correspond to the coordinate values ​​of the reference points. That is, the reference point data can also be displayed on the roll map.

[0224] For this purpose, the roll map creating unit 40 may be connected to the position measuring device 20 and the inspection and / or measurement device 10 to receive coordinate value data and inspection and / or measurement data, or may be connected to the control unit 30 to receive the coordinate value data and inspection and / or measurement data via the control unit.

[0225] 2, the roll map creating unit 40 may include a database 41 that stores data acquired from the inspection and / or measuring device 10 and the position measuring device 20, or that stores data related to the quality, dimensions, etc. of normal electrodes. The roll map creating unit 40 may also include a central processing unit 42 that processes the acquired data and commands a visualization device 43 included in the roll map creating unit 40 to visualize the data.

[0226] The roll map creating unit 40 defines a visualization area for forming a roll map that replicates the electrodes 1, and includes a visualization device 43 that displays coordinate values ​​on the defined area. The visualization device 43 can display the inspection and / or measurement data in accordance with the coordinate value data. The visualization device 43 is connected to the central processing unit 42, and can visualize and display the inspection and / or measurement data and the coordinate value data according to instructions from the central processing unit.

[0227] As shown in FIG. 4, the visualization device 43 includes an acquired data input unit 43a, a roll map coordinate recognition unit 43b, and an image generation unit 43c.

[0228] First, the acquired data input unit 43a receives and inputs data from the central processing unit .

[0229] The roll map coordinate ascertainment unit 43b may define a visualization area forming the roll map and define pixel coordinate values ​​within the visualization area for each data element of the acquired source data. When data on the specifications of the electrode roll, such as the lot number, length, and width, are input to the control unit 30, a database, or a server (not shown) through electrode roll information registration, the roll map coordinate ascertainment unit 43b may calculate and determine the visualization area of ​​the roll map in accordance with a predetermined scale conversion scale from such data on the size of the electrode 1. Alternatively, the roll map visualization area may be calculated and determined in accordance with a predetermined scale conversion scale from the coordinate value data of the longitudinal and width directions of the electrode 1.

[0230] The coordinate grasping unit 43b can map the acquired test and / or measurement data and the (width and length) coordinate value data of the electrode 1, and assign the mapped data on the visualization area (roll map) based on pixel coordinates.

[0231] The image generating unit 43c may represent the mapped data elements assigned to each pixel coordinate in the visualization area using at least one legend. A legend refers to various shapes, such as a circle, a square, or a triangle, displayed in the visualization area, or the above shapes with colors. Therefore, the image generating unit 43c visually displays the inspection and / or measurement data in a pattern, shape, color, etc., designated for each data at pixel coordinates (coordinates on the roll map) corresponding to each position data of the actual electrode 1 in a visualization area called a roll map, and embodies the data on the roll map, thereby generating a roll map according to the present invention.

[0232] In addition, based on data stored in a storage unit such as the database 41 or a separate server, data corresponding to a specific range of the role map can be retrieved from the storage unit and displayed (image generated) on the screen. At this time, the central processing unit 42 can issue a command to the visualization device 43 to visually display test data that has been found to be abnormal in comparison with normal data stored in the database 41, distinguishing it from other data.

[0233] The size setting of the visualization area and the generation of an image by grasping the coordinates of the visualization area can be performed using various conventional user interfaces, or various programs and processing tools related to data allocation, processing, analysis, and visualization. Therefore, the role map creation unit 40 described above is merely an example, and is not limited to the above embodiment.

[0234] The above-mentioned roll map creation unit 40 may be, for example, a data processing system such as a manufacturing execution system (MES) or a component of that system. Alternatively, the roll map creation unit 40 may be software having the operating logic of the above-mentioned data processing system, or hardware or a mechanical device including that software.

[0235] A data processing system is a system (including hardware and software) that handles input, processing, output, communication, and the like to perform a series of operations on data. The electrode manufacturing process includes an electrode MES that manages a series of electrode manufacturing processes, including coating, pressing, and slitting. Therefore, when the above-mentioned coordinate data, inspection data, and the like are sent to the electrode MES, the electrode MES can generate the above-mentioned roll map. In this case, the above-mentioned roll map can be created for each of the coating process, pressing process, and slitting process.

[0236] The electrode that has undergone the electrode manufacturing process is placed between the unwinder and rewinder in the notching process. In the notching process, the electrode placed between the unwinder and rewinder is punched to form an electrode tab on the electrode. The notching process also includes the above-mentioned inspection and / or measuring instruments, roll map creation unit, position measurement instrument, etc., and a roll map for the notching process can be created. In this case, the roll map creation unit for the notching process can be a notching MES.

[0237] Alternatively, the role map creation unit may be a so-called SPC (Statistical Process Control) device. SPC is a management method for efficiently operating a process using statistical methods to achieve quality and productivity targets required in the process.

[0238] Alternatively, for example, a basic roll map that matches at least a portion of the inspection and / or measurement data with coordinate values ​​may be created in a data processing system such as an MES, and a more advanced intermediate roll map that additionally displays overall data, detailed data, etc. of the inspection and / or measurement data in accordance with the coordinate values ​​may be created in a host system such as an SPC. In this case, as the amount of data increases, an additional server capable of storing the overall data and detailed data may be required.

[0239] If the system is capable of processing large amounts of data, the basic role map and the advanced role map can be processed in one data processing system.

[0240] Meanwhile, the data processing system, such as the MES or SPC, can be linked to a higher-level system (e.g., a data warehouse (DW)). In this case, data (coordinate values, inspection and / or measurement data) acquired in the electrode manufacturing process or notching process can be linked to additional process data acquired in other processes. That is, if the coordinate values ​​of an electrode are identified and a semi-finished battery cell or a battery cell is manufactured in a process subsequent to the electrode manufacturing process / notching process using the electrode corresponding to the coordinate values, the process data in the subsequent process can be matched with the inspection and / or measurement data. This makes it possible to ascertain the manufacturing history of a specific electrode part from the subsequent process to the preceding process. This makes it easier to perform quality control and analysis. Furthermore, if a problem occurs in a semi-finished battery cell or a battery cell, or a battery module or battery pack including the same, quality tracking and cause analysis of the problem can be easily performed using the matched data.

[0241] As described above, various data and information required for the entire battery manufacturing process, including electrode manufacturing, including the manufacture of finished batteries, modules, and packs, can be linked to the roll map. Therefore, by utilizing the roll map, quality control, analysis, tracking, etc. related to battery manufacturing can be easily performed.

[0242] Furthermore, the roll map creation device 100 of the present invention may include a manual input device 60 into which test and / or measurement data of an electrode that has been manually tested and / or measured is input, as shown in FIG. The test and / or measurement data that has been manually tested and / or measured may be directly transmitted to the roll map creation unit 40 by the manual input device 60. In this case, the manual input device may acquire coordinate values ​​of the electrode 1 portion from which the test and / or data was acquired in conjunction with the position measuring device. Alternatively, the manual input device may be connected to a control unit and transmit the manually acquired test and / or measurement data together with coordinate value data to the roll map creation unit via the control unit.

[0243] For example, information regarding defects or breaks in the electrode 1 can be automatically acquired via the inspection and / or measuring instrument 10, or can be directly input by an operator on the on-site electrode production line. In this case, the operator can input the length and location of the defect as confirmed by the naked eye and tag the defective portion. Alternatively, when an electrode breaks, the electrodes can be connected with a joint connecting member, and the connection location, the length of the broken electrode, etc. can be input into a manual input device.

[0244] The roll map creating section 40 displays the created roll map on the display section 50, so that data relating to quality and defects can be visually and easily grasped at a glance.

[0245] The manual input device 60 and the display unit 50 may be a predetermined input / output I / F (Interface). For example, an input device (not shown) such as a keyboard, a mouse, or a touch panel may be used as the manual input device.

[0246] The roll map creating device of the present invention may also include an interface that connects the roll map creating unit, the control unit, the position measuring device, the inspection and / or measuring device, and the display unit, etc., to transmit and receive data.

[0247] Meanwhile, the roll map creation unit 40 can create at least one of an absolute coordinate roll map that displays both the coordinate values ​​of the electrode removal portion and the remaining surviving electrode portion after removal, and a relative coordinate roll map that displays only the coordinate values ​​of the surviving electrode portion.

[0248] FIG. 5 is a schematic diagram showing an example of a role map generated by the role map generating device of the present invention.

[0249] On the roll map RM1, the longitudinal dimensions of the electrode 1 are expressed as coordinates at predetermined intervals. In this way, the roll map shows information related to defects, quality, electrode breakage, etc. that occur in the electrode manufacturing process along with coordinate values, making it easy to visually grasp data related to quality and defects in the electrode manufacturing process at a glance.

[0250] Referring to Figure 5, information on appearance defects such as pinhole defects f1 and line defects f2 are visually displayed at the coordinates where the defects occur. Also displayed is a mismatch between the coated and uncoated areas f3. Other loading defects are also displayed, including the outermost electrode discarded area.

[0251] Also, reference points M1, M2, and M3 are marked on electrode 1 at 300, 600, and 900 meters.

[0252] Meanwhile, if a break occurs in electrode 1 and the worker connects it with a joint connecting member, the electrode length will decrease by the length of the break. Furthermore, as described above, the worker may remove the point where the visual defect occurred and then connect it. The roll map RM1 can also reflect this situation and modify the coordinate values ​​on the roll map. Referring to FIG. 5, a roll map of absolute coordinates A1, which displays the coordinate values ​​of the removed electrode portion and the remaining surviving electrode portion, and a roll map of relative coordinates A2, which displays only the coordinate values ​​of the surviving electrode portion, are shown. As shown in FIG. 5, the relative coordinates A2 and absolute coordinates A1 can be displayed together on a single roll map RM1, but they can also be displayed separately. The roll map displayed in relative coordinates indicates the actual state of the electrode.

[0253] Meanwhile, electrodes can be classified into cross-sectional electrodes, which are coated only on one side (top or bottom) of the current collector, and double-sided electrodes, which are coated on both the top and bottom sides. In this case, the roll map creation unit can create the roll map for one side or either one or both sides of the electrode (current collector).

[0254] FIG. 6 is a flowchart showing an embodiment of a role map creation method according to the present invention.

[0255] As shown in FIG. 6, the roll map creation method according to an embodiment of the present invention includes the steps of: inspecting and / or measuring an electrode moved between an unwinder and a rewinder to obtain inspection and / or measurement data, and obtaining coordinate values ​​of the position of the moving electrode (S2); The method includes a step (S3) of creating a roll map by displaying at least a portion of the inspection and / or measurement data and the coordinate values ​​on a plane that replicates the moving electrode.

[0256] The step (S2) of acquiring the inspection and / or measurement data and the coordinate values ​​may be preceded by a step (S1) of registering the electrode roll information, in which the specifications of the electrode roll to be installed on the unwinder are registered.

[0257] The electrode roll specifications refer to the specifications of the electrode roll, such as the lot number of the electrode roll, the electrode length, the electrode width, the electrode type determined by the input material and composition, etc. To register the electrode roll information, when the electrode roll is introduced into the unwinder, some or all of the specification information, including the electrode roll lot number, can be entered into a server (not shown). This data entry can be performed manually by an operator. Alternatively, an identification mark, such as a barcode attached to the electrode roll, which can confirm the electrode specifications and detailed data, can be scanned by an identification mark recognizer, such as a barcode reader, and the information can be automatically entered into the server.

[0258] When information about the electrode roll is registered in the server, detailed data and specifications about the electrode (roll), such as the lot number, process, and equipment, can be retrieved from the server and displayed together with the roll map that is created later. Furthermore, since the specifications about the length and width of the electrode roll can be determined from such data, when the roll map is created by the roll map creation unit, the shape and size of the roll map can be determined at a predetermined scale proportional to the electrode length and width. That is, the shape and size of the roll map bar that matches the length and width of the electrode can be displayed on an output device such as a display, according to the scale conversion scale stored in the roll map creation unit. In this case, at least some of the information about the electrode roll specifications can be displayed together with the roll map.

[0259] To create a roll map, the electrodes moved between the unwinder and rewinder are inspected and / or measured to obtain inspection and / or measurement data. At this time, the positions of the electrodes must be obtained as coordinate values ​​(S2). As described above, the inspection and / or measurement data can be obtained automatically using a predetermined inspection and / or measurement device or manually by an operator. In this case, the operator can input the inspection and / or measurement data and the coordinate values ​​of the electrodes into a manual input device.

[0260] For example, if an electrode 1 has a foreign object or defect before coating the electrode on the current collector, the defected portion can be cut off and discarded in a defect removal port, and the electrodes can be connected directly or via a connecting member such as PET. Alternatively, if an electrode has a defect even after coating or breaks due to excessive tension, the electrode can be connected. The outermost portions of the electrode's start and end points are also cut off and discarded because they may not be of consistent quality. Such electrode connection or discard sections can be measured automatically or manually. For example, when an operator connects a broken section, the position of the section can be directly input into a server or data processing system, or can be input into a separate input device installed on the electrode production line that can communicate with a server, etc. Alternatively, an operator can attach a display tag directly to the broken or connected section on the electrode.

[0261] The electrode 1 is inspected by a predetermined inspection and / or measuring instrument 10 installed in the electrode manufacturing process line. For example, measuring instruments such as an electrode slurry loading amount measuring instrument, a dimension and width measuring instrument, a reference point measuring instrument, and an appearance inspector may be installed in the line. The electrode slurry loading amount measuring instrument may be a non-contact thickness measurement sensor such as an ultrasonic sensor, a displacement sensor, a laser sensor, or a confocal thickness sensor. Since the thickness of the electrode foil is known, for example, in the case of a confocal thickness sensor, the slurry loading amount can be measured by analyzing the wavelength of the reflected light from the sensor and calculating the distance (thickness) between the sensor and the electrode.

[0262] The size and width measuring device may employ a type of vision measuring device that can photograph or scan the appearance of the electrode to measure the electrode width, the width of the covered and uncovered portions, etc. Once the widths of the covered and uncovered portions are known, it may also be possible to determine whether there is a mismatch between the covered and uncovered portions.

[0263] The visual inspector can capture an image of the electrode's appearance. From this, data on visual defects such as pinholes, lines, and crater shapes can be obtained, as well as data on insulation appearance and insulation defects. The visual inspector can also include an inspector with a sensor that can distinguish the color of the electrode, such as a color sensor. The color sensor can detect parts that are different in color from the electrode, such as PET connecting members.

[0264] The above-mentioned inspection and / or measuring instruments are provided as examples for illustrative purposes and are not intended to be limiting as long as they are capable of obtaining data regarding quality or defects in the electrode manufacturing process or notching process.

[0265] Meanwhile, the tip of the electrode, where electrode coating begins, is coated by the electrode slurry coater while adjusting coating conditions such as the loading amount. The loading amount may vary in this area. Therefore, data related to such condition adjustment sections may also be obtained by the inspection and / or measurement devices, and this data may be displayed on the roll map bar.

[0266] In addition to the inspection and / or measurement data, the position of the electrode that is moved in a roll-to-roll state must be acquired as a coordinate value, i.e., the position data of the electrode from which the data is acquired must be specified. In other words, if the roll map bar or roll map is assumed to be a coordinate system consisting of two coordinate axes, that is, the longitudinal direction and the width direction, in order to display specific data at a specific position (coordinate) in the coordinate system, the position data of the electrode that is the basis for extracting that position (coordinate) must be known.

[0267] In one embodiment, position data (coordinate values) according to the longitudinal direction of the electrode can be detected by an encoder installed on the unwinder UW or the rewinder RW. The coordinate values ​​match the inspection and / or measurement data. Matching of the coordinate values ​​with the data may be performed by the inspection and / or measurement device or by a PLC control unit.

[0268] On the other hand, coordinate values ​​according to the width direction of the electrode can be obtained by inspection and / or measurement equipment, and these coordinate values ​​according to the width direction can also be matched with the inspection and / or measurement data and displayed on the roll map.

[0269] Also, as shown in FIG. 5, reference points marked on the electrodes at predetermined intervals can be displayed at positions on the roll map corresponding to the coordinate values ​​of the reference points.

[0270] The acquired inspection and / or measurement data and coordinate values ​​are displayed on a plane that replicates the electrode, creating a so-called roll map. The roll map creation unit is a data processing system capable of data processing, and may be, for example, an electrode MES, an assembly MES, or a higher-level system such as an SPC or DW. Alternatively, the roll map creation unit may be one of the components constituting the system.

[0271] The roll map creation unit creates a roll map by displaying at least a portion of the test and / or measurement data on coordinate values ​​indicating the positions on the electrodes where the data was acquired. Furthermore, the roll map may additionally display the entire test and / or measurement data or detailed data relating to one or more of the test and / or measurement data. The detailed data is data related to the test and / or measurement data, and may be, for example, an external image of a specific position on the electrode.

[0272] In addition, process data for each detailed process (e.g., coating, roll pressing, slitting, notching) during electrode manufacturing can be displayed in conjunction with specific coordinate values ​​or specific data display units of the roll map. For example, the electrode drying temperature in the coating process, the coater slurry discharge pressure, and other discharge conditions can be process data for the coating process. Alternatively, the press pressure in the roll pressing process can also be process data.

[0273] At least one server may be provided to store the overall data, detailed data, or process data. The roll map creator may receive necessary data from the server and display it together on the roll map.

[0274] The test and / or measurement data may be compared with normal data, and data found to be abnormal may be displayed on a role map so as to be visually distinguishable from other data. For this purpose, the role map creation unit may include a predetermined visualization device.

[0275] In addition, data on the current status of input materials input into the electrode manufacturing process can be displayed in parallel with the roll map, which makes it easier to compare the material input status with the data on the roll map and to control quality.

[0276] FIG. 7 is a schematic diagram of a role map according to one embodiment of the present invention, and FIG. 8 is a schematic diagram of a role map according to another embodiment of the present invention.

[0277] The roll map RM2 in Fig. 7 includes a roll map bar 110 that is displayed in the form of a bar to represent the electrode in a roll-to-roll state. The roll maps in Fig. 7 and Fig. 8 show roll maps for the electrode coating process.

[0278] On the roll map, at least a portion of the inspection and / or measurement data obtained by inspecting and / or measuring the moving electrode is displayed at a predetermined position on the roll map bar corresponding to the position of the electrode from which the data was obtained.

[0279] The roll map bar 110 is a replica of an actual electrode that is installed and moves in a roll-to-roll state between an unwinder and a rewinder, and can be displayed in a long rectangular planar shape.

[0280] The start and end points of the roll map bar 110, as well as the portion of the roll map bar 110 between the start and end points, may be displayed in synchronization with the path of the electrode moving between the unwinder and rewinder. For example, if the length of the electrode roll to be coated is 3000 m, the roll map bar 110 replicating this electrode may be displayed on the screen at a predetermined scale (ratio) relative to 3000 m. Furthermore, when a specific electrode roll is installed between the unwinder and rewinder, detailed information such as the lot number and the width of the electrode roll may be identified. Therefore, the width as well as the length of the electrode (roll) may be reduced to a predetermined scale, and the roll map bar 110 reduced to a predetermined ratio may be displayed on the screen. Therefore, the length and width of the roll map bar 110 correspond to a predetermined ratio of the length and width of the electrode actually moving. Furthermore, when a specific position of the electrode is indicated by coordinate values ​​expressed in dimensional units of the electrode length and width, for example, the coordinates may also be displayed on the roll map bar 110 at a predetermined scale. 7 and 8, coordinate values ​​140 indicating the longitudinal positions of the electrodes are displayed at predetermined intervals along the longitudinal direction of the roll map bar 110.

[0281] In addition, since the roll map bar 110 is synchronized with the electrode (path) or electrode movement that actually moves while being coated between the unwinder and the rewinder, even when coating is performed to adjust coating conditions before actual coating, the coating status of the corresponding portion can be displayed on the roll map bar 110. Therefore, the roll map bar 110 can be divided into a condition adjustment portion A for adjusting coating conditions and a mass production portion B where actual coating is performed according to the adjusted conditions.

[0282] In addition, even if a section (disconnected section 122) occurs in which an electrode is disconnected and reconnected during the coating process, this can be displayed on the roll map bar 110.

[0283] If the roll map bar 110 is synchronized with the actual electrode movement to represent the electrode path, the data displayed on the roll map bar 110 is a portion displaying data related to the quality or defects of the actual electrode coating process. In this specification, "data related to quality or defects" includes not only data related to actual defects such as appearance defects, insulation defects, and mismatches between the coated and uncoated portions of the electrode, but also data related to the position of the electrode taken for sample testing, as well as normal range data such as loading amount data and dimension / width data. In other words, theoretically, as long as there are inspection and / or measuring instruments capable of measuring specific qualities in the electrode manufacturing process, all data measured by such inspection and / or measuring instruments can be displayed on the roll map. Therefore, in this specification, "data related to quality or defects in the electrode coating process" includes not only data related to defects but also normal data, and refers to all other quality data that can be quantified or visualized on the roll map.

[0284] Furthermore, in this specification, "visually displaying" data or "visualizing" data may be defined as visually representing the data on a roll map that replicates an electrode using at least one of the following visually recognizable elements: pattern, color, size, design, brightness, transparency, various symbols, numbers, letters, and other visually recognizable elements. Furthermore, the "visually displayed portion" of data may be defined as not only a portion displayed using the above-mentioned pattern or color at a specific position on the roll map bar, but also a portion displayed using the pattern or color across a specific range or the entire range of the roll map bar. For example, if data regarding the electrode slurry loading amount is displayed using color across the entire roll map bar, the data display portion may correspond to the entire roll map bar, rather than just a portion of it. In the drawings in this specification, each data display portion is shown as being distinguished by hatching, but it goes without saying that the data display portion may also be distinguished by color.

[0285] Since the roll map bar 110 of the present invention is a replica of the electrode that is actually coated, it is preferable to also display detailed information about the actual electrode (roll) installed between the unwinder and rewinder along with the roll map bar 110.

[0286] 7, in addition to the lot number of the electrode roll, detailed information 130 regarding the electrode roll production line, production process, production equipment, side of the electrode, etc. can be displayed at the top of the screen. From this detailed information 130, it is possible to understand not only the history information of the previous process of the electrode roll provided to the coating process, but also additional information regarding the coating, such as what line or equipment was used in the coating process, and whether one or both sides of the electrode were coated, or information regarding the specifications of the electrode roll. In addition, by clicking the inquiry button displayed at the top right of the screen and entering keywords related to the line, process, production equipment, or side of the electrode, the roll map RM2 or roll map bar 110 that matches the menu can be called up and displayed on the screen.

[0287] At least one of the quality or defect data 120 displayed on the roll map bar 110 can be obtained manually or automatically.

[0288] 7 and 8, the following is a detailed description of data related to quality or defects that can be displayed on the roll map bar 110 or that can be grasped from the roll map according to an embodiment of the present invention. 1) Data on at least one of the electrode dimensions and width 125 2) Data on mismatch between coated and uncoated electrode parts126 3) Slurry loading data on electrode 121 4) Data on electrode appearance 123 5) Data 122 regarding the location of electrode disconnection sections or inter-electrode connection positions 6) Data on the location of the sample testing unit 129 7) Data on the location of the electrode disposal section 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 124, 127 9) 128 other bad data. In addition, 10) data regarding reference points marked at predetermined intervals on the electrodes; and 11) Data regarding electrode thickness after roll pressing can be displayed on the roll map bar.

[0289] To display the inspection and / or measurement data 120, the name of the data displayed in a particular color, pattern, shape, etc. may be simply displayed at the top of the screen, and the actual data displayed in such color, pattern, or shape may be displayed at a particular position or over a particular range on the roll map bar 110.

[0290] Specifically, if the electrode dimensions or width are outside of the normal range, data 125 relating to this may be displayed on the roll map.

[0291] The roll map may also display data 126 relating to mismatches between the widths of the coated and uncoated areas that fall outside of a set range.

[0292] In addition, data 121 relating to the electrode slurry loading amount may be displayed by hatching over a specific range on the roll map bar, indicating whether the data 121 is normal 121a, underachieved 121b, or excessive 121c.

[0293] Also, electrode appearance defects 123 are displayed as circles at specific locations on the roll map bar.

[0294] In addition, disconnected sections 122, where electrodes have been disconnected and connected with a connecting member such as PET, are displayed at the left end of the roll map bar 110. Electrodes directly connected without a connecting member can also be displayed on the roll map. When an operator connects electrodes in this way, the operator can directly display data or position information about such sections on the roll map RM2.

[0295] Also, the portion 129 of the electrode provided for sample testing may be represented on the role map RM2.

[0296] In addition, data regarding the section where the electrode is discarded may also be displayed on the roll map. For example, the outermost section of the electrode where the coating has progressed is cut off and discarded, and the roll map RM2 of the present invention may display information regarding such a discarded section.

[0297] In the electrode coating process, in addition to coating the electrode slurry, an insulating material is also coated on the boundary between the coated and uncoated areas, so issues related to insulation defects 127 and insulation appearance defects 124 can also be displayed on the roll map bar 110. In this sense, it is clear that the "electrode coating process" in this specification includes "coating of insulating material" in addition to "coating of electrode slurry."

[0298] In addition to appearance defects and insulation defects, data 128 relating to other defects may also be displayed on the roll map bar 110. Such data 128 relating to other defects may be displayed as other defects when displayed during the electrode coating process, but if it is determined to be a specific defect upon completion of coating or in a subsequent process, it may be later changed to such a specific defect and displayed on the roll map RM2. The display of the other defect data may be important information for understanding the cause of any defect that occurs in a subsequent process.

[0299] As described above, by displaying quality or defect-related data 120 in a specific pattern, color, etc. on the roll map bar 110 synchronized with the electrode path, quality-related history information for, for example, an electrode coating process or other roll-to-roll process can be grasped at a glance.

[0300] Also, as shown in FIG. 7, by selecting (clicking) a specific range on the roll map bar 110, inspection and / or measurement data for the electrode range corresponding to the specific range or process data for each detailed process during electrode manufacturing may appear. For example, by clicking on the mismatch section 126 on the roll map bar in FIG. 7, detailed information 150 about the mismatch 126, as well as information about the loading amount 121 and width 125 for the mismatch section, may be viewed at the bottom left of the roll map bar. This range may be selected by clicking while moving the inquiry bar left or right, and the defective section may be selected in a set length unit (e.g., 1 meter) to view detailed data for the corresponding range. While only the loading amount on one side of the electrode is displayed on the upper roll map bar 110, the roll map may be configured so that the loading amounts on the top and bottom surfaces of the electrode can also be viewed in the detailed information 150.

[0301] Meanwhile, when electrode appearance defect data 123 on the roll map bar 110 is clicked, an appearance image 163 of the electrode captured by the appearance inspector may be displayed separately from the roll map. The appearance defect image 163 displayed when the appearance defect data 123 is clicked is shown enlarged at the bottom right of the roll map bar in FIG. 7 . When the appearance image is displayed, detailed information 162 including the position coordinates of the appearance defect captured by the appearance inspector may also be displayed on the screen together with the appearance image 163. The detailed information 162 may include information such as the lot ID of the electrode targeted by the roll map bar, the appearance inspector ID, the type of appearance defect, the electrode lane, the position coordinates and grade of the appearance defect, the diameter, and the date and time of occurrence. Since this information is stored on the server, the information may be retrieved from the server and separately displayed on the screen by clicking the appearance defect image on the roll map bar. According to the present embodiment, appearance information 160 including the appearance image 163 and detailed information 162 related to the appearance defect may be separately displayed on the screen.

[0302] In addition, the roll map RM2 of the embodiment shown in Figure 7 is displayed on the screen, separated by lanes L1 and L2 on the electrode to which the electrode slurry is applied. Since the electrode may have land areas on the electrode foil at predetermined intervals or patterns to which the electrode slurry is applied, roll maps RM2 may be created for the lanes L1 and L2 to which the electrode slurry is applied. Figure 7 shows roll maps for two lanes L1 and L2.

[0303] 8 shows a roll map RM3 of a double-sided electrode in which electrode slurry is coated on both the top surface T and the bottom surface B of the electrode. Because the electrode for the top surface T of the double-sided electrode is displayed at the top of the screen and the roll map RM3 for the bottom surface B is displayed at the bottom of the screen on the same screen, data 220 relating to the quality or defects associated with the electrode slurry and insulating material coating applied to both sides of the electrode can be compared and clearly understood.

[0304] In addition, in the roll map RM3 of this embodiment, data 250 regarding the current input status of the electrode foil, electrode slurry, and insulating material input into the electrode coating process, and data 260 regarding the loading amount of electrode slurry input into the electrode coating process are displayed together with the roll map RM3 along the longitudinal direction of the roll map.

[0305] The top of the screen displays the electrode foil, electrode slurry, and insulating material that are input into the electrode coating process. Long bars representing the electrode foil, electrode slurry, and insulating material extend from left to right on the screen along the length of the roll map RM3, parallel to the roll map. Areas where the bars do not extend indicate that the material (electrode foil, electrode slurry, or insulating material) is not being input into the electrode coating process. Therefore, from data 250 on the current status of input materials, it is possible to see at a glance which section of the electrode coating process a particular material was introduced into.

[0306] In this embodiment, data 221 relating to the loading amount of electrode slurry added to the electrode coating process is displayed on the roll map along the longitudinal direction of the roll map, but is also displayed separately from the roll map at the bottom of the roll map bar along the longitudinal direction of the roll map, parallel to the roll map. This data graphically shows the distribution of the loading amount 260 along the length of the electrode, making it easier to grasp information regarding whether the loading amount is excessive or insufficient. Since the loading amount can also be displayed numerically as needed, information regarding the loading amount can be grasped more intuitively.

[0307] 8 also displays detailed data 230 related to the electrode roll lot number, the electrode roll model, process, manufacturing equipment, lane number, electrode side, etc. In this embodiment, the top of the screen also displays a menu (Input) related to the current input status, an electrode (roll map) calculated from the input materials (Output), a menu 231 related to measurement values, a menu 232 related to electrode side selection, a menu 233 related to screen zoom, and a menu 234 related to other measurement options. By selecting one of these menus, various types of roll maps RM3 matching the menu can be displayed on the screen.

[0308] In this embodiment, the names of data related to loading amounts and defects, data related to surface defects, and data related to sample inspection are displayed at the top of the roll map screen for easy identification. The types of data displayed on the roll map bar can be easily distinguished from the names of these data.

[0309] The roll map bar in Figure 8 also displays 1) data 225 regarding at least one of the electrode dimensions and width, 2) data 226 regarding mismatch between the coated and uncoated portions of the electrode, 3) electrode slurry loading amount data 221, 4) electrode appearance defect data 223, 5) data 222a, 222b regarding the position of the disconnected section or the position of the connection between the electrodes, 6) data 229 regarding the position of the sample inspection section, 7) data 222c regarding the position of the electrode disposal section, 8) data 227 regarding the insulation quality or defects in the insulating material coating process performed after electrode slurry coating, and 9) other defect data.

[0310] If the electrode dimensions or width are outside the normal range, the data 225 relating to this is displayed as a rectangle on the role map, and data 226 relating to the mismatch is also displayed as a thick rectangle.

[0311] In this embodiment, data 221 relating to the electrode slurry loading amount is displayed in more detail, i.e., normal data 221a, under-saturated data 221b and 221c, and excessive data 221d and 221e, which are displayed over a specific range on the roll map bar 210.

[0312] Electrode appearance defects are displayed as a circle, black circle, or black bar 223 at a specific location on the roll map bar 210. In this embodiment, the appearance defects 223 are further divided into pinholes, lines, and craters, and each is displayed on the roll map 200 with a different display shape.

[0313] In addition, disconnected sections 222a where the electrodes are disconnected and connected by a connecting member such as PET, and inter-electrode connected sections 222b may also be displayed. In FIG. 8, the PET connected sections are displayed on the roll map.

[0314] The roll map also displays defective sections, for example, automatic display 228a measured and displayed by a measuring instrument, and manual display section 228b manually input by an operator. The roll map displays the start point S and end point E of each section, making it possible to grasp information about the length of the section and the start and end points.

[0315] The outermost discarded section 222c is also displayed on the roll map bar 210 as a shaded area.

[0316] In this embodiment, the portion 229 of electrodes provided for sample testing is also displayed on the role map bar 210, further subdivided into self-test and QA test sections.

[0317] The data (graph) 260 on the loading amount displayed in parallel with the roll map bar at the bottom of the embodiment of Figure 8 shows an area 261 where the loading amount is excessive and an area (PET connection section) 262 where electrode slurry is not loaded, which is consistent with the display of the roll map bar 210 at the top.

[0318] As described above, the roll map RM3 of this embodiment displays data related to quality or defects using a specific pattern, color, etc. on a roll map bar synchronized with the electrode path, and can simultaneously display the current status of material input into the coating process, the loading amount, which is important data, and detailed data for each location on the same roll map bar or the same screen, which has the advantage of making it easier to grasp quality-related history information in the electrode coating process at a glance.

[0319] The role map may be stored on a computer-readable recording medium.

[0320] The computer-readable recording medium may be a ROM, RAM, CD-ROM, SSD, magnetic tape, floppy disk, optical data storage device, etc., and may also be embodied in the form of a carrier wave (e.g., transmission over the Internet). The computer-readable recording medium may be part of the memory of a computer system, or may be separate from any computer system.

[0321] The role map may be stored in the database of the role map creation unit shown in FIG. 2 or in a separate recording medium. The database may be, for example, a memory. A plurality of such memories may be provided as needed. The memory may be a volatile memory or a non-volatile memory. As the volatile memory, RAM, DRAM, SRAM, etc. may be used. As the non-volatile memory, ROM, PROM, EAROM, EPROM, EEPROM, flash memory, etc. may be used. The above-listed examples of memory are merely illustrative and are not limited to these examples. Alternatively, the recording medium may be a hard disk, CD-ROM, USB memory, SSD (Solid State Drive), etc.

[0322] The roll map and associated data stored on the recording medium can be freely used during battery manufacturing, quality control, analysis, and problem tracking.

[0323] During the electrode manufacturing process, if an electrode breaks or is defective, the broken or defective portion may be removed and the electrode may be reconnected with connecting tape. Alternatively, to maintain electrode quality, the start or end of the electrode, where the electrode quality is uneven, may be removed. In this case, the worker arbitrarily inputs the length of the electrode cut off after electrode removal and reconnection (electrode loss amount) into a control unit or the like. However, because the worker manually measures the electrode loss amount with the naked eye or using a measuring tool such as a ruler, the actual amount of electrode loss is not accurate. Furthermore, the amount of electrode loss input by each worker varies.

[0324] In this case, although it is possible to detect the connection tape in a subsequent process and determine that the electrodes have been broken and connected, the amount of electrode loss cannot be accurately determined because it depends on the operator's input. If the amount of cut electrode loss is inaccurate, the electrode position coordinates will change in the subsequent process, making it impossible to accurately process the subsequent process at the desired position. Furthermore, when comparing and analyzing quality changes between each detailed process of the electrode process, different standards are required depending on the amount of electrode loss, making it difficult to reliably compare quality depending on the electrode position.

[0325] In recent years, roll maps have been used that display quality or defect data on a roll map bar that replicates the electrode in a roll-to-roll state and is displayed on a screen. This roll map is created for each detailed electrode process, including the coating process, roll press process, and slitting process. The roll map information is downloaded to check information about quality defects and electrode breakage in the preceding process, which is then checked in the following process to eliminate the defects or perform necessary follow-up processing. However, if the amount of electrode loss is not accurately determined as described above, the electrode position data displayed on the roll map will change, making it impossible to accurately display data about quality or defect positions. This raises the risk that the following process will be performed based on incorrect position coordinates when referring to the roll map in the following process.

[0326] Therefore, it can be said that there is a demand for the development of a technique that can accurately measure the amount of electrode loss in the electrode manufacturing process.

[0327] FIG. 9 is a schematic diagram showing that distortion occurs in position coordinates when loss occurs in an electrode without a reference point.

[0328] The top view in Figure 9 is a roll map (RM) that replicates the movement of the electrode between the unwinder UW and the rewinder RW in a roll-to-roll fashion. While an actual roll map RM visually displays many detailed data related to quality and defects, for ease of explanation, Figure 9 only shows the broken electrode and connecting tape D.

[0329] The roll map RM in the upper drawing of Figure 9 is a replica of an actual electrode, and various types of breaks occur in actual electrodes. When one of the detailed processes in the electrode manufacturing process is carried out, an electrode break occurs within that process (the current process), and the roll map RM shows that breaks of 50 meters and 60 meters have occurred. It also shows that 30 meters of the electrode start portion were removed in the previous process before entering the current process, and 35 meters of the electrode end portion were removed in the current process.

[0330] In this case, after removing the broken portions and the electrode removal portions (electrode loss portions) at the start and end portions of the electrode, only the connecting tape D that connects the broken portions remains, as shown in the bottom drawing of Figure 9. In other words, the bottom drawing of Figure 9 is the actual shape of the electrode. In the bottom drawing of Figure 9, the position of the connecting tape D can be detected by, for example, a splice detection sensor. However, because the broken or removed electrodes do not remain on the actual electrode, the amount of electrode loss, which is the length of the electrode removal portions (loss portions), cannot be determined. As mentioned above, the electrode removal portions are manually input by the operator, making it difficult to accurately determine the amount of electrode loss.

[0331] Furthermore, if the amount of electrode loss cannot be grasped, the roll map RM of the electrode manufacturing process will take on a form like the bottom drawing in Figure 9, and the position coordinates on the roll map will also be distorted. The top drawing in Figure 9 is shown for convenience with the connecting tape, assuming that the electrode breakage / removal length is known, and when actual electrode loss occurs, it will take on the form shown in the bottom drawing in Figure 9.

[0332] That is, the roll map RM replicates the movement of the electrode and displays the longitudinal dimension, i.e., the position coordinate value, corresponding to the longitudinal dimension of the electrode, but unless the amount of electrode loss is known, it cannot be reflected in the longitudinal dimension. Therefore, when the electrode is transferred to a process subsequent to the electrode process or to another detailed process within the electrode process, a roll map that does not reflect the amount of electrode loss is difficult to use. In addition, it is necessary to display or reflect the amount of electrode loss in the roll map RM and reflect it in the longitudinal dimension (position coordinate) of the roll map to correct the position coordinate value.

[0333] FIG. 10 is a diagram showing the concept of the present invention in which a reference point is introduced to prevent distortion of position coordinates.

[0334] In the roll map RM at the bottom of Figure 10, reference points M1, M2, and M3 are introduced at predetermined intervals to indicate the electrode loss area. The number and spacing of the reference points M1, M2, and M3 can vary depending on the electrode length and specifications. In Figure 10, a 1,200-meter-long electrode is assumed, and reference points M1, M2, and M3 are displayed at 300, 600, and 900 meters, respectively. By marking such reference points M1, M2, and M3 on an actual electrode and measuring the reference points when electrode loss occurs, the spacing between the reference points will fluctuate, and the amount of electrode loss can be easily determined based on this fluctuation. Once the amount of electrode loss is determined in this way, the reference points M1, M2, and M3 and the length of the electrode loss can be displayed together, as in the roll map RM at the bottom of Figure 10. As described below, a single roll map can display both the longitudinal dimension of the electrode that reflects the loss length (absolute coordinates) and the longitudinal dimension of the electrode that does not reflect the loss length (relative coordinates).

[0335] In this way, by introducing reference points to the electrodes, the amount of electrode loss can be determined by comparing the reference point positions before the fluctuation in the reference point interval (the set reference point positions) with the measured reference point positions, and this can be reflected on the roll map. Measurement of the amount of electrode loss using reference points will be described in detail below.

[0336] <Electrode loss measurement device and measurement method> FIG. 11 is a schematic diagram of an electrode loss amount measuring device according to one embodiment of the present invention.

[0337] The electrode loss amount measuring device 300 according to the present invention includes an electrode 1 that is transported between an unwinder UW and a rewinder RW and has a plurality of reference points M1, M2, and M3 marked at predetermined intervals between the start and end of the electrode 1, a reference point measuring device 310 that senses the reference points marked on the electrode, a position measuring device 320 that derives coordinate values ​​of the electrode according to the amount of rotation of the unwinder UW or rewinder RW and derives the coordinate values ​​of the reference points when the reference point measuring device measures the reference points in conjunction with the reference point measuring device, and a calculation unit 330 that calculates the amount of loss of the electrode by comparing the derived reference point coordinate values ​​with the set reference point coordinate values ​​when the reference point interval between the start and end of the electrode deviates from the set reference point interval due to partial loss of the electrode.

[0338] In the electrode loss measurement device 300 of the present invention, a plurality of reference points M1, M2, and M3 are marked at predetermined intervals on the electrode 1 between the start and end of the electrode. The number and spacing of the reference points may vary depending on the length and specifications of the electrode, as described above. The reference points may be marked using a predetermined reference point marking device 350. For example, an inkjet ink marking printer may be used as the reference point marking device. Since the electrode manufacturing process includes multiple steps, including a coating process, a roll pressing process, and a slitting process, markings must be made on the electrode before measuring the electrode loss. To this end, the reference point marking device 350 may be installed before the unwinder UW where the corresponding process is performed, and the marking device may mark a plurality of reference points M1, M2, and M3 at predetermined intervals on the electrode. For visibility, the reference points are not marked on the coated portion 1a of the electrode 1 where the active material is applied, but on the uncoated portion 1b where no active material is applied, and may be marked on the top or bottom surface or on both the top and bottom surfaces of the uncoated portion (see Figure 15).

[0339] The present invention also includes a reference point measuring device 310 that detects reference points on the electrodes. The reference point measuring device 310 can be an optical character recognition (OCR) reader that can read printed characters. Alternatively, a vision camera equipped with a vision sensor that can detect reference points can be used as the reference point measuring device. The reference point measuring device can be installed above a line of electrodes 1 that are transported in a roll-to-roll state, as shown in FIG.

[0340] The position measuring device 320 can derive electrode coordinate values ​​according to the rotation amount of the unwinder UW or rewinder RW. For example, rotary encoders 320R and 320U that extract electrode coordinate values ​​from the rotation amount of the motors driving the unwinder UW and rewinder RW can be used as the position measuring device. Because the electrodes unwound by the unwinder UW are wound by the rewinder RW, the electrode coordinate values ​​derived by the rotary encoders 320R and 320U installed on the unwinder UW and rewinder RW, respectively, are the same. Either rotary encoder can convert the electrode position into a digital signal according to the rotation amount of the motor, and derive the coordinate value as a numerical value. In the present invention, the position measuring device 320 is linked to the reference point measuring device 310. When the reference point measuring device 310 senses a reference point, the position measuring device 320 can derive the position value of the reference point. 11 shows that the reference point measuring device 310 is connected to the position measuring device 320, and when the measurement signal of the reference point measuring device is transmitted to the position measuring device, the coordinate values ​​of the reference point are automatically derived by the position measuring device 320. The connection between the reference point measuring device and the position measuring device can be wired or wireless.

[0341] The present invention includes a calculation unit 330 that, when the reference point distance between the start and end ends of the electrode 1 deviates from the set reference point distance due to partial loss of the electrode 1, calculates the amount of loss of the electrode by comparing the derived reference point coordinate value with the set reference point coordinate value. The calculation unit 330 may be, for example, a control unit (PLC control unit) that controls the transfer of the electrode between the unwinder UW and the rewinder RW. Alternatively, the calculation unit may be a roll map creation unit (described later). The calculation unit 330 includes a predetermined calculation program and can calculate the amount of electrode loss by comparing the reference point coordinate value derived by the position measurement device 320 with the set reference point coordinate value. To this end, the calculation unit 330 may include a memory in which the set reference point coordinate value is stored, or may read data related to the set reference point coordinate value from a database.

[0342] 9 and 10, when electrode loss occurs due to breakage or arbitrary removal of the electrode, the position of the reference point shifts from the initially marked reference point position (set reference point coordinate value). Therefore, the calculation unit 330 can calculate the electrode loss amount from this. The specific loss amount calculation process will be described above when explaining the electrode loss amount measurement method of the present invention.

[0343] The electrode loss calculation device 300 of the present invention may further include a joint detection sensor 340 that detects a connecting tape attached to an electrode. The connecting tape is a tape that connects a broken electrode when a break occurs in the electrode. If only the joint detection sensor 340 is installed without a reference point, the joint detection sensor can detect the connecting tape and determine that there is a break in the electrode. However, it cannot determine the length of the broken electrode. As described above, the present invention can determine the length of the broken electrode by including the reference point measurement device 310, position measurement device 320, and calculation unit 330.

[0344] Like the reference point measuring device 310, the position measuring device 320 is linked to the joint detection sensor 340. Therefore, when the joint detection sensor 340 detects the connecting tape, the length of the connecting tape can be calculated. Specifically, the joint detection sensor 340 may detect the beginning and end of the connecting tape, respectively. When the position measuring device 320 receives the respective detection signals, the position measuring device 320 detects the coordinate values ​​of the detection time of the beginning and end. Since the difference between the coordinate values ​​of the detection time of the beginning and end is the length of the connecting tape, the length of the connecting tape can be determined by the position detection of the position measuring device 320. The joint detection sensor 340 may be, for example, a color sensor. Since the connecting tape is usually a different color from the electrodes, the color sensor can detect the connecting tape in the portions that are different in color from the electrodes.

[0345] The connecting tape may include a PET film in addition to an adhesive tape that connects the electrodes. The PET film extends over a relatively longer section than the adhesive tape to connect the electrodes.

[0346] If a connecting tape is detected at a location other than the reference point, the calculation unit 330 calculates the total loss amount by adding the length of the connecting tape to the loss amount calculated by comparing the reference point position value with the set reference point position value. This will be described in detail later.

[0347] The electrode loss calculation method of the present invention includes the steps of marking a plurality of reference points at predetermined intervals between the start and end of an electrode transported between an unwinder UW and a rewinder RW, detecting the reference points on the electrode with a reference point measuring device and deriving coordinate values ​​of the reference points, and, when the reference point interval between the start and end of the electrode deviates from the set reference point interval due to loss of part of the electrode, comparing the derived reference point coordinate values ​​with the set reference point coordinate values ​​to calculate the loss amount of the electrode.

[0348] As described above, before detecting the reference points, a plurality of reference points are marked at predetermined intervals between the start and end of the electrode by the reference point marking device 350 (see FIG. 11).

[0349] A reference point measuring device 310 such as a vision camera measures a reference point on the electrode, and a position value of the reference point can be derived from a position measuring device 320 linked to the reference point measuring device. If there is no loss in the electrode, the derived position value of the reference point can be said to be the same as the position value of the set reference point.

[0350] However, if the electrode becomes shorter than the length originally wound on the unwinder UW due to breakage or arbitrary removal, the reference point distance between the start and end of the electrode will deviate from the set reference point distance, and from this deviation, the amount of electrode loss can be calculated by comparing the derived reference point coordinate values ​​with the set reference point coordinate values.

[0351] Specifically, when at least one of the distance between the reference points, the distance between the reference point and the electrode start point, and the distance between the reference point and the electrode end point changes, the amount of electrode loss can be calculated by comparing the derived reference point coordinate value with the set reference point coordinate value.

[0352] FIG. 12 is a schematic diagram showing an example of electrode loss amount measurement according to the present invention.

[0353] Figure 12(a) shows that three reference points M1, M2, and M3 have been marked at 300-meter intervals on an electrode where no loss occurs. The electrode is 1,200 meters long, and a rewinder RW and unwinder UW are installed at its start and end, respectively, to transport the electrode roll-to-roll. For ease of explanation, the side wound around the rewinder RW is considered to be the electrode start, and the part unwound by the unwinder UW is considered to be the electrode end, and the explanation will be based on the electrode moving from the unwinder UW to the rewinder RW.

[0354] Figure 12(b) shows a state in which an operator arbitrarily removes 100 meters of electrode in a previous process. In this case, the first reference point M1 of the electrode being wound by the rewinder RW is pulled from 300 meters to 200 meters. This is detected by the reference point measuring device 310, and the rotary encoder installed on the rewinder RW derives its position value, 200 meters. Because the start of the electrode has been reduced by 100 meters, the positions of the subsequent second reference point M2 and third reference point M3 also change from 600 meters to 500 meters and from 900 meters to 800 meters, respectively. The numbers displayed in inclined planes in Figure 12 indicate the changed reference point coordinate values. The same applies below. The position of the electrode end detected by the unwinder UW also changes from 1200 meters to 1100 meters.

[0355] The position measurement device 320 transmits the changed reference point position value data to the calculation unit 330, and the calculation unit 330 compares the set reference point position values ​​(300, 600, 900) with the derived reference point coordinate values ​​(200, 500, 800) to calculate the amount of electrode loss. Specifically, in FIG. 12(b), the distance between the electrode start point and the first reference point M1 has decreased from 300 meters to 200 meters, so the amount of electrode loss can be calculated as 100 meters. The location where the loss occurred can also be identified as between the electrode start point and the first reference point M1. However, since the connecting tape was not detected between the electrode start point and the first reference point M1, it can be assumed that the loss was not due to electrode breakage. Of course, the splice detection sensor 340, described below, is required to detect the connecting tape.

[0356] FIG. 13 is a schematic diagram showing another example of electrode loss amount measurement according to the present invention.

[0357] Contrary to (b) of Figure 12, (a) of Figure 13 shows that an electrode loss of 100 meters occurred at the end of the electrode. In this case, the position measuring device 320R (rotary encoder) installed on the rewinder RW cannot detect the change in the reference point.

[0358] However, the rotary encoder 320U on the unwinder UW side may determine that the position of the end portion has decreased by 100 meters, and the calculation unit 330 may then derive that the distance between the electrode end portion and the third reference point M3 has decreased to 200 meters. Therefore, based on the position measuring device 230U of the unwinder UW, the position of the third reference point M3 has changed from the set reference point coordinate value, and the calculation unit 330 may then calculate that 100 meters of electrode has been lost at the electrode end portion.

[0359] 13(b) shows that electrode loss occurred not at the beginning or end of the electrode but at the middle. For example, when an electrode breakage occurs between the first reference point M1 and the second reference point M2, the coordinate value of the first reference point M1 does not change, but the positions of the second reference point M2, the third reference point M3, and the electrode end point change. When the reference point measuring device 310 and the associated position measuring device 320 derive the changed reference point coordinate values ​​in response to this reference point change, the calculation unit 330 can compare the reference point coordinate values ​​with the set reference point coordinate values ​​and calculate that the amount of electrode loss between the first reference point and the second reference point is 100 meters.

[0360] Therefore, according to the electrode loss amount measurement method of the present invention, when at least one of the distance between the reference points, the distance between the reference point and the start of the electrode, and the distance between the reference point and the end of the electrode varies, the derived reference point coordinate value can be compared with the set reference point coordinate value to calculate the amount of electrode loss.

[0361] FIG. 14 is a schematic diagram showing another example of electrode loss measurement according to the present invention.

[0362] In this example, the connecting tape D is on the electrode due to electrode breakage. In this case, the reference point measuring device 310 and the position measuring device 320 detect that the second reference point M2 and the third reference point M3 have moved from 600 meters to 550 meters and from 900 meters to 850 meters, respectively. From this, it is tentatively estimated that there has been an electrode loss of 50 meters between the first reference point M1 and the second reference point M2.

[0363] Furthermore, the joint detection sensor 340 and the position measurement device 320 detected that the length of the connecting tape D was 50 meters. This means that the broken electrode was cut off and the electrode was connected with a 50-meter-long connecting tape D. Therefore, in reality, the electrode breakage amount should be calculated by adding the length of the connecting tape D (50 meters) to the 50 meters. That is, when the calculation unit 330 compares the reference point coordinate values ​​with the set reference point coordinate values, it calculates the total loss amount by adding the length of the connecting tape D to the loss amount calculated by comparing the reference point coordinate values.

[0364] The step of calculating the length of the connecting tape may be performed before or after the step of deriving the coordinate values ​​of the reference points. For example, if the reference point measuring device 310 is installed before the joint detection sensor 340, the length of the connecting tape is calculated after the coordinate values ​​of the reference points are derived. If the joint detection sensor 340 is installed before the reference point measuring device 310, the process of calculating the length of the connecting tape may be performed first.

[0365] FIG. 15 is a schematic diagram showing how the reference point changes during the roll press process.

[0366] As described above, the electrode manufacturing process includes an electrode coating process in which the electrode slurry is coated on a current collector, a roll pressing process in which the coated electrode is rolled with a press roll, and a slitting process in which the rolled electrode is cut in the longitudinal direction.

[0367] For example, after reference points are marked in the electrode coating process, the electrode elongates at a predetermined rate when it undergoes the roll press process. The lower drawing in FIG. 15 shows such elongation of electrode 1. As electrode 1 elongates, the reference points M1, M2, and M3 marked on the electrode also elongate at a predetermined rate. If the positions of the reference points change, the electrode loss amount must be calculated based on the changed reference points in the post-rolling process. That is, in the electrode coating process, the electrode loss amount is calculated based on the original first to third reference points M1, M2, and M3. However, after rolling, the electrode loss amount must be calculated based on the changed first to third reference points M1', M2', and M3'. In this case, the set position value data for the changed reference points M1', M2', and M3' that have changed due to rolling is also stored in a database, memory, or the like. Therefore, if loss occurs in the electrode after the roll press process, the loss amount can be determined by comparing it with the set value data based on the changed reference points. The set reference point coordinate values ​​reflecting the rolling are set in advance according to the roll press pressure, electrode extension length, etc., and are stored in a database or the like.

[0368] FIG. 16 is a schematic diagram of an electrode loss amount measuring device 300' according to another embodiment of the present invention.

[0369] This embodiment illustrates a roll press process in which an electrode 1 that has undergone an electrode coating process is wound on an unwinder UW in a roll press process and transferred to a rewinder RW. In this embodiment, press rolls R for rolling are provided, installed above and below the middle portion of the electrode that is transferred in a roll-to-roll manner. Therefore, after being rolled by the press roll R, the electrode is stretched, and the reference point on the electrode changes. In this case, since the positions of the reference points before and after the press roll R are different, a first reference point measuring device 310A may be disposed before the press roll, and a second reference point measuring device 310B may be disposed after the press roll to sense the reference point that changes due to rolling by the press roll R.

[0370] Therefore, the calculation unit 330 may calculate the loss amount of the electrode before the press roll based on the reference point position value sensed by the first reference point measurement device 310A, and may calculate the loss amount of the electrode after rolling by the press roll R based on the reference point coordinate value changed by the second reference point measurement device 310B. In this embodiment, except that the reference point coordinate value or the interval between the reference points changes due to rolling, the process of comparing the derived reference point coordinate value with the set reference point coordinate value is the same as the above-described embodiment, and therefore a detailed description of the electrode loss amount calculation in this embodiment will be omitted.

[0371] Although the embodiment of Fig. 16 shows that the reference point varies during one process, the electrode loss measurement method for calculating the loss amount of the rolled electrode based on the changed reference point when the position of the reference point changes as the electrode is rolled by the press roll R is also applied after the rolling process. For example, after the rolling process of Fig. 16, when the electrode roll is released from the rewinder RW and the electrode roll is wound on the unwinder UW of the subsequent slitting process as shown in Fig. 15, and the slitting process proceeds, the electrode loss amount in the slitting process is calculated based on the changed reference point. Of course, in the electrode coating process prior to the process of Fig. 16, the electrode loss amount is calculated based on the reference point before rolling.

[0372] As described above, according to the present invention, the amount of electrode loss can be automatically and accurately calculated by a predetermined electrode loss measurement device using a reference point. Therefore, the reliability of the electrode loss data is improved, and such data information can be effectively used in subsequent processes.

[0373] Furthermore, as will be described later, the present invention displays the reference points on a roll map that replicates the electrodes, and also displays information regarding the amount of electrode loss, thereby making it possible to visually and easily grasp data regarding quality and defects at a glance in relation to the reference points.

[0374] FIG. 17 is a schematic diagram showing an example of a roll map of an electrode manufacturing process according to the present invention.

[0375] The roll map RM4 of the present invention is displayed on the screen in synchronization with the movement of the electrodes moving in a roll-to-roll state between the unwinder UW and the rewinder RW, and includes a roll map bar 360 displayed in the form of a bar that replicates the electrodes in the roll-to-roll state, and a plurality of reference points M1, M2, M3 that replicate a plurality of reference points marked at predetermined intervals on the electrodes and are displayed at predetermined intervals on the roll map bar.

[0376] The roll map of the present invention includes a plurality of reference points M1, M2, and M3 that are displayed at predetermined intervals on the roll map bar by replicating a plurality of reference points marked at predetermined intervals between the start and end of the electrodes. That is, as shown in Fig. 17, the reference points actually marked on the electrodes can be replicated on the roll map bar 360, and the reference points M1, M2, and M3 can be displayed on the roll map bar 360 at the predetermined scale.

[0377] In this case, the reference points M1, M2, and M3 can also be expressed by the longitudinal dimensions of the electrodes.

[0378] The roll map RM4 of the present invention can also display the amount of loss measured by the electrode loss measurement device and measurement method described above using reference points. That is, position coordinates (position data) that reflect the amount of loss and position coordinates that do not reflect the amount of loss can be displayed on a single roll map. Referring to FIG. 17, position coordinates 370 (longitudinal dimension) that do not reflect the amount of electrode loss are shown as absolute coordinates 371. Position coordinates 370 that reflect the amount of electrode loss are also shown as relative coordinates 372. Then, by referring to the roll map RM4 of the present invention, electrode loss in the preceding process or the current process can be grasped at a glance. Furthermore, because coordinates that reflect and do not reflect the amount of electrode loss are displayed simultaneously, no distortion occurs in the coordinates when performing post-processing by referring to the roll map of the preceding process. This allows post-processing to be performed accurately at the desired position.

[0379] The roll map RM4 also includes a display unit 380 that visually displays at least one of data related to quality, defects, and electrode loss measured during the electrode manufacturing process at a predetermined position on the roll map bar 360 corresponding to the electrode position where the data was measured. Referring to FIG. 17 , data 381 related to electrode quality (e.g., data related to the electrode loading amount), data 382 related to defects (e.g., data related to pinholes, lines, etc.), and data 383 related to electrode loss (data related to the outermost discard section) are all displayed on the roll map bar 360. This allows information about the electrode quality, defects, and electrode loss in the process to be grasped at a glance. In fact, in addition to the outermost discard section, electrodes with defects or electrodes that did not meet the quality standards were removed and connected using connecting tape D, etc., resulting in electrode loss in these areas as well. The roll map RM4 reflects all of this electrode loss in the relative coordinates 372. Therefore, the length of electrode loss can be determined by comparing the relative coordinates 372 and absolute coordinates 371 of the roll map RM4. At this time, by referring to the reference points M1, M2, and M3 displayed on the roll map, the amount of electrode loss can be calculated more easily.

[0380] For reference, the screen displaying the roll map RM4 in Figure 17 clearly displays the items related to quality, defects, and electrode loss at the top of the roll map. Therefore, by referring to these items and the roll map, visual data related to the above items can be easily grasped.

[0381] Meanwhile, while the roll map RM4 in FIG. 17 is a roll map for the electrode coating process, the roll maps can also be created for the roll pressing process and the slitting process. In this case, by comparing the roll maps for each process, events occurring in each process can be easily understood. Furthermore, the roll map for the previous process can be used when creating the roll map for the subsequent process. In this case, the roll map for the process after rolling by the press roll should display a reference point on its roll map bar that replicates the position of the reference point changed by the rolling. That is, as shown in FIGS. 15 and 16, if the position of the reference point changes due to the rolling process, the roll maps for the roll pressing process and the subsequent slitting process should display the changed position of the reference point on the roll map bar to prevent distortion of the roll map position coordinates.

[0382] FIG. 18 is a schematic diagram of a roll map creation device according to the present invention.

[0383] A roll map creation device 400 according to an embodiment of the present invention includes a reference point measuring device 412 that inspects an electrode 1 moving between an unwinder UW and a rewinder RW and senses a reference point marked on the electrode, a position measuring device 420 that derives coordinate values ​​of the electrode according to the amount of rotation of the unwinder or rewinder and derives coordinate values ​​of the reference point, and a roll map creation unit 440 that creates a roll map bar that replicates the moving electrode and creates a roll map that shows the amount of electrode loss calculated by comparing the coordinate values ​​of the derived reference point with the set reference point coordinate values ​​on the roll map bar.

[0384] For ease of explanation, FIG. 18 shows the electrode coating process in which the electrode active material is coated on the current collector by the coater C to produce an electrode, and the electrode is rolled by the press roll, both of which are shown on a single electrode line between the unwinder UW and the rewinder RW.

[0385] However, in reality, electrode coating is performed on a separate unwinder UW and rewinder RW, and a separate reference point measuring device and a joint detection sensor are installed to create a roll map for the electrode coating process.When the electrode coating process is completed, the electrode roll is moved from the rewinder RW for the electrode coating process to the unwinder UW for the roll press process.

[0386] However, because Figure 18 is intended to comprehensively explain the roll map creation process for the electrode manufacturing process, it merely shows the coater C for electrode coating and the press roll R for the roll press process on one electrode for convenience, unlike the actual process. In other words, if coater C is removed from Figure 18, it becomes a roll map creation system for the roll press process, and if press roll R is removed, it becomes a roll map creation system for the electrode coating process, so it is important to understand that the electrode process does not actually proceed as shown in Figure 18.

[0387] Prior to the electrode coating process, when the electrode roll is placed between the unwinder UW and the rewinder RW in a roll-to-roll state, an electrode roll information registration step is preferably performed in advance. This step involves inputting data on the electrode roll's specifications, including its lot number, into a server or the roll map creation unit 440. For example, when the electrode roll is introduced into the unwinder UW or placed between the unwinder UW and the rewinder RW, detailed data on the electrode roll, including its lot number, can be input into a server or the like. Once the electrode roll information is registered, detailed data on the electrode (roll), such as the lot number, process, and equipment, can be retrieved from the server and displayed on the screen together with the created roll map bar. Furthermore, since the length and width specifications of the electrode roll can be determined from the detailed electrode roll data, when the roll map bar is created using a data processing system such as a manufacturing execution system (MES), the shape and size of the roll map bar can be determined at a predetermined scale proportional to the length and width of the electrode. In other words, the shape and size of the roll map bar that matches the length and width of the electrode roll can be displayed on the screen according to the scale conversion scale stored in the manufacturing execution system or the like.

[0388] On the other hand, in order to create the roll map of the present invention, data on electrode loss during the electrode process and data on the reference points marked on the electrodes must be obtained, as well as data on the electrode positions where the above data was obtained. Furthermore, data on quality or defects may also be obtained as needed.

[0389] Such data can be obtained by inspecting the electrode 1 as it moves through the electrode process.

[0390] After coating or rolling, the electrode 1 is inspected by a predetermined inspection and / or measuring instrument 410 installed on the electrode transfer line. For example, inspection and / or measuring instruments such as an electrode slurry loading amount measuring instrument 411, a reference point measuring instrument 412, and an appearance inspector 413 may be installed on the line. The electrode slurry loading amount measuring instrument 411 may be a non-contact thickness measurement sensor such as an ultrasonic sensor, a displacement sensor, a laser sensor, or a confocal thickness sensor.

[0391] As described above, the vision measuring device may acquire data related to the reference points marked on the electrodes, and the position values ​​of the reference points may be detected by a position measuring device 420 installed on the unwinder UW or rewinder RW and transmitted to the roll map creating unit 440. The calculation unit 330 described above for measuring the electrode loss amount may be the roll map creating unit, specifically, a data processing system or a component of that system. That is, the roll map creating device 400 of FIG. 18 may also measure the electrode loss amount. The acquired electrode loss data and reference point data may be transmitted to the roll map creating unit 440 directly from rotary encoders 420R and 420U, which are position measuring devices, or via the inspection and / or measurement device 410. Alternatively, a PLC controller that controls electrode transport between the unwinder and rewinder may be connected to the roll map creating unit 440, and the loss data and reference point data may be transmitted from the PLC controller to the roll map creating unit.

[0392] As described above, when data is acquired by various measuring instruments, the data is transmitted to the role map creation unit 440. At this time, a server (not shown) may be used to store the data. Alternatively, the role map creation unit 440 may be provided with a predetermined storage device to store the data.

[0393] 18, the encoder of the rewinder RW is connected to the appearance inspector 413 as well as the loading amount measuring instrument 411, the reference point measuring instrument 412, the dimension and width measuring instrument, etc. so as to be able to exchange data, and can acquire longitudinal position data of the electrode whose loading amount is measured, longitudinal position data of the electrode whose dimension or width is measured, together with the loading amount and dimension / width information. If necessary, the encoder 420U of the unwinder UW can also be connected to the various measuring instruments 410.

[0394] Meanwhile, the data regarding the electrode loss and the data regarding the reference points marked on the electrodes, together with other data regarding quality or defects, can be visualized and displayed as a roll map on the display unit 450 by the data visualization device 443 installed in the roll map creation unit 440.

[0395] As described above, by displaying the reference points on the roll map according to the present invention together with information about the amount of electrode loss, data about quality and defects can be visually and easily grasped at a glance in relation to the reference points.

[0396] Furthermore, since the roll map showing the reference points can be referenced during quality control, defect management, and subsequent process processing in each detailed process of the electrode process, subsequent process processing and defect removal can be performed accurately.

[0397] In the electrode manufacturing process, if a foreign substance gets mixed into the active material layer or a coating defect occurs and is detected by an inspection device, a marking is conventionally made on the electrode or a worker attaches a defect tag so that the defect can be removed in the coating process or a subsequent process.

[0398] However, because a conventional physical marking process was used to directly mark information about quality or defects on electrodes, once the electrodes were assembled into a secondary battery, even if a defect occurring in a subsequent process was due to a defect in the electrode process, it was difficult to determine at which stage in the electrode manufacturing process the defect actually originated. In other words, once the physically marked electrodes were assembled or removed, it was very difficult to analyze the quality correlation between each process in the electrode manufacturing process and between subsequent processes.

[0399] Meanwhile, a technology has been proposed in which after the electrode manufacturing process is completed, a marking is made directly on the secondary battery in the secondary battery assembly line with ink to indicate whether the secondary battery is defective or not, thereby keeping track of the work history for each secondary battery.

[0400] However, since the above-mentioned conventional technology relates to marking after secondary battery assembly, it is possible to grasp the history of the secondary battery during the assembly process and thereafter, but it has the limitation that it is not possible to grasp historical information regarding defects in the electrode manufacturing process, which is a process that precedes this.

[0401] Therefore, there is a need for a technology that can display historical information regarding quality or defects so as to be used as a reference for quality correlation analysis and the progress of subsequent processes in relation to each detailed process of the electrode manufacturing process and in relation to subsequent processes of the electrode manufacturing process.

[0402] In another aspect of the present invention, the roll map correction system 500 includes a roll map creation unit 510 that generates a roll map for a first process, which is represented by a planar shape that replicates an electrode that moves between a first unwinder UW1 and a first rewinder RW1 and undergoes a first process, and which displays inspection and / or measurement data of the electrode acquired in the first process and coordinate values ​​indicating the position of the electrode; and a roll map correction unit 520 that converts the roll map coordinates of the first process in reverse order so that the coordinate values ​​of the start and end points of the roll map for the first process are reversed when the electrode 1 moves between a second unwinder UW2 and a second rewinder RW2 and undergoes a second process.

[0403] FIG. 19 is a schematic diagram illustrating a roll map correction system according to another embodiment of the present invention.

[0404] The longitudinal dimensions of the electrode 1 may be displayed at predetermined intervals as coordinates on a roll map (roll map bar) in the shape of a plane that replicates the electrode 1 moving roll-to-roll between the first unwinder UW1 and the first rewinder RW1 and undergoing the first process. The electrode position, i.e., the longitudinal dimensions, may be acquired from a rotary encoder that extracts the electrode position (encoder value) from the amount of rotation of the motor that drives the unwinder UW1 or the rewinder RW1. Therefore, the roll map creation unit 510 for the first process may display the longitudinal dimensions of the electrode 1 as coordinate values ​​at predetermined intervals on the roll map (see FIG. 20). The roll map creation unit 510 also generates the roll map so that the inspection and / or measurement data of the electrode 1 acquired in the first process is displayed at coordinate values ​​corresponding to the position of the electrode 1 where the inspection and / or measurement data was acquired. For example, the position measuring device 20 and the inspection and / or measurement device 10 may be linked, so that the inspection and / or measurement device 10 acquires the inspection and / or measurement data as well as the coordinate value data of the electrode from which the inspection and / or measurement data was acquired. Alternatively, the control unit may match the inspection and / or measurement data with the coordinate value data. The roll map creation unit 510 displays this data on the roll map to generate the roll map.

[0405] The roll map correction system 500 of the present invention is characterized in that it converts and corrects the roll map coordinates of the first step in order to apply the roll map generated in the first step to the second step.

[0406] That is, as shown in FIG. 19, a roll map is generated from an electrode moving in a roll-to-roll manner between the unwinder UW1 and rewinder RW1 in the first process. For example, the first process may be an electrode coating process as shown in FIG. 19. An electrode 1 is coated with electrode slurry in a coater C, inspected by an inspection and / or measuring device 10, and the electrode roll is wound on the rewinder RW1 in the first process. At this time, the encoder values ​​of the unwinder UW1 and the rewinder RW1 are identified as coordinate values ​​and can be transmitted to the roll map creation unit 510 via the control unit 30. The inspection data acquired by the inspection and / or measuring device 10 can also be transmitted to the roll map creation unit 510 via the control unit 30 together with the coordinate value data.

[0407] The present invention is characterized in that the role map generated by the role map generation unit 510 of the first process is corrected to generate a role map of the second process that can be referenced in the second process. The role map correction unit 520 acquires the role map of the first process from the role map generation unit 510, and converts the role map of the first process in reverse order so that the coordinates of the start and end parts of the role map of the first process are reversed, thereby generating a role map of the second process.

[0408] Such a transformation correction is shown in FIG.

[0409] FIG. 20 is a schematic diagram showing an example of roll map coordinate changes caused by the roll map correction system of the present invention.

[0410] Figure 20(a) shows the roll map for the first process (electrode coating process). The length of electrode 1 is 1,200 meters, and reference points M1, M2, and M3 are displayed at 300, 600, and 900 meters. Also, electrode defect sections NG (e.g., poor appearance) are displayed at 400 and 500 meters. However, the roll map for the first process with these coordinate values ​​cannot be immediately used for the second process. This is because the portion displayed as coordinate value 0 in the roll map for the first process is the start of the first process, but because it is wound first by the rewinder RW in the first process and is located inside the electrode roll, it becomes the end of electrode 1 when it is unwound by unwinder UW2 in the second process. Conversely, the 1,200-meter point, which is the last portion wound around rewinder RW in the first process, is the end of electrode 1 in the first process, but becomes the start of electrode 1 when it is unwound by unwinder UW2 in the second process. If the roll map from the first process were applied directly to the second process, the coordinate values ​​of the reference point and the defective section NG would not match the actual electrode dimensions. Therefore, as shown in Figure 20(b), the roll map for the first process is converted and corrected in reverse order, so that the coordinate value (0) of the start of the roll map for the first process becomes the coordinate value (1200) of the end, and the coordinate value (1200) of the end becomes the coordinate value (0). As a result, the coordinate values ​​of the reference point of the roll map for the first process also change, with M3 changing from 900 meters to 300 meters and M1 changing from 300 meters to 900 meters. The coordinate value of the defective section NG is also converted from 400-500 meters to 700-800 meters. By performing this reverse correction, the roll map for the second process can be generated, as shown in Figure 20(b).

[0411] If part of the electrode end is removed after the first process is completed and before the second process begins, the roll map coordinates must be corrected to reflect this. Since the quality of electrode ends is often not uniform, there are cases where part of the electrode end is removed after a specific process is completed. This is distinguished from cases where the electrode is removed during a process and is called post-completion removal.

[0412] FIG. 21 is a schematic diagram showing another example of roll map coordinate changes caused by the roll map correction system of the present invention.

[0413] 20 is a schematic diagram showing another example of roll map coordinate changes by the roll map correction system 500 of the present invention, in which removal after completion is displayed. That is, 50 meters of the electrode end portion is removed in the first process, and this information is reflected in the roll map of the first process. For example, the electrode end removal can be performed by a worker, who inputs the length and coordinate values ​​into a predetermined input device. This data is then transmitted from the input device to the roll map creation unit 510, and the roll map creation unit 510 can generate a first process roll map such as that shown in FIG. 21(a).

[0414] Alternatively, if the roll map for the first process is in a state like that shown in Figure 21(a) despite the removal of a portion of the electrode end, the roll map must be corrected as shown in Figure 21(b) before the start of the second process. In this case, the coordinate values ​​of the portion of the electrode end that was removed from the roll map for the first process are removed (i.e., the coordinates from 1150 to 1200 meters are removed), and the coordinates are corrected in reverse order so that the coordinate values ​​of the start (0 meter) of the roll map for the first process and the end (1150 meters) where the portion of the electrode end has been removed are reversed. Furthermore, if the coordinate values ​​of the reference point and the defective section NG are also corrected in reverse order using the same method, the result will be as shown in Figure 21(b). That is, in the corrected roll map for the second process, the distance from the start to the M3 reference point is 250 meters, M2 has coordinate values ​​of 550 meters, and M1 has coordinate values ​​of 850 meters. The defective section NG will also be 650 to 750 meters.

[0415] In the present invention, the roll map correction unit 520 can generate a roll map for the second process, as shown in FIG. 20(b) or FIG. 21(b). Referring to FIG. 19, the roll map correction unit 520 can transmit the generated roll map to the control unit 30' for the second process and use it when performing the second process. For example, as described below, the roll map for the second process can be used when removing a defective section NG from the first process in the second process. In FIG. 19, the second process is a roll press process in which the electrode is rolled by a press roll R. The electrode 1 is moved roll-to-roll between a second unwinder UW2 and a second rewinder RW2, and encoders 20U2 and 20R2 for the second unwinder UW2 and the rewinder RW2 are shown, respectively. A predetermined inspection and / or measuring device 10' is also disclosed on the electrode 1. The present invention appropriately corrects the roll map for the first process between the first and second processes to prevent errors when performing the second process.

[0416] FIG. 22 is a schematic diagram showing how defects that occur in the electrode coating process are removed in the subsequent roll pressing process.

[0417] In the electrode manufacturing process, defects that occur in the previous process may be removed in the next process. For example, an electrode installed between the unwinder and rewinder in the roll press process is advanced in a roll-to-roll fashion, rolled by the press roll, and wound onto the rewinder. Workers remove and discard defective sections of the electrode that occurred in the previous coating process at a defect removal port installed in front of the press roll. At this time, workers check the defective section tag (TAG) attached to the electrode in the previous process and remove the defective section.

[0418] However, in order to identify the defective section, the worker had to check the tag at any time and slow down or stop the roll press equipment each time, making the defect removal work very inconvenient (Case 1 in Figure 22).

[0419] Furthermore, if the worker was in a different position when the defective electrode section arrived at the defect removal port, there was a problem that the electrode with the defective tag would be rolled out by the press roll as is (Case 2 in Figure 22).

[0420] Furthermore, if a defective tag is lost in the previous process for some reason, the worker is unable to check and remove the defective section (Case 3 in FIG. 22).

[0421] Therefore, it is necessary to develop a technology that can easily check the history and information regarding defective sections in the electrode manufacturing process and easily remove electrodes in defective sections.

[0422] FIG. 23 is a schematic diagram showing the concept of an electrode defect removal device according to another embodiment of the present invention, and FIG. 24 is a schematic diagram showing an electrode defect removal device according to the present invention.

[0423] As shown in FIG. 21, for example, assume that a tag G is attached to a defective section NG generated in the electrode coating process, and the defective section NG of the electrode 1 is removed in the roll press process. As shown in FIG. 22, a worker must wait for the tag G of the defective section NG to arrive at the defect removal port. However, this waiting itself is a waste of manpower, and if the tag G is lost, the worker may not be able to find the defective section NG. The present invention utilizes roll map information from the previous process (roll map from the electrode coating process) to stop the movement of the electrode 1, slow down the movement before arrival, or sound an alarm when the defective section NG arrives at the defect removal port in the second process, preventing the worker from missing the defective section NG. FIG. 23 is a conceptual diagram illustrating a situation in which such a previous process roll map is used for defect removal.

[0424] FIG. 24 is a schematic diagram showing the electrode defect removal device of the present invention in more detail.

[0425] The electrode defect removal device 600 of this embodiment is a defect removal device in the second process of an electrode that has been moved between the first unwinder UW1 and the first rewinder RW1 and has undergone the first process 100, and includes a defect removal port 610 located between the second unwinder UW2 and the second rewinder RW2, where the defective section NG of the electrode generated in the first process is removed, and a second process control unit 640 that controls the movement of the electrode between the second unwinder UW2 and the second rewinder RW2.The second process control unit 640 calculates the time when electrode 1 of the defective section NG arrives at the defect removal port 610 from the second unwinder UW2 based on the coordinate information of the defective section NG displayed on the roll map of the first process, and when the defective section NG arrives at the defect removal port 610, stops the electrode movement of the second process so that the defective section NG of electrode 1 can be removed from the defect removal port.

[0426] As shown in Fig. 24, a defect removal port 610 is located at a predetermined position between the unwinder UW2 and rewinder RW2 of the second process (second unwinder UW2 and second rewinder RW2). In the roll press process shown in Fig. 24, the defect removal port 610 is usually provided at a position between the unwinder UW2 and the press roll R. The defect removal port 610 may be a type of workbench where an operator removes and discards electrodes 1 in defective sections NG, and may be equipped with a disposal box for discarding the removed electrodes 1 or a winder for winding up the removed electrodes 1.

[0427] The electrode defect removal device 600 also includes a second process control unit 640 (e.g., a PLC control unit) that controls electrode movement between the second unwinder UW2 and the second rewinder RW2. The second process control unit 640 calculates the time when electrode 1 in the defective section NG arrives at the defect removal port 610 based on the roll map of the first process. Since the roll map of the first process displays the longitudinal dimension of electrode 1 and the position of the defective section NG as coordinate values, the second process control unit 640 can calculate the time when electrode 1 in the defective section NG arrives at the defect removal port 610 from the second unwinder UW2 based on the coordinate information of the defective section NG displayed on the roll map of the first process. That is, knowing the distance between the electrode start point and the defective section NG, and knowing the rotational speeds (i.e., electrode transfer speeds) of the unwinder UW2 and the rewinder RW2, the second process control unit 640 can calculate the time when the defective section NG arrives at the defect removal port 610. Here, "based on the coordinate information of the defective section NG displayed on the roll map of the first process" does not necessarily mean that the arrival time is calculated from the coordinates themselves, but rather means that coordinates that have undergone a predetermined correction based on the coordinate information of the defective section NG displayed on the roll map of the first process can be applied, as described below. That is, as described with reference to FIGS. 20 and 21 , the coordinate values ​​of the roll maps of the front and rear processes transported in a roll-to-roll manner are reversed. Therefore, in the present invention, in order to calculate the arrival time of the defective section NG, the coordinate values ​​of the roll map of the first process must be converted and corrected in reverse order so that the coordinate values ​​of the start and end of the roll map of the first process 100 are reversed. To this end, the defect removal device 600 of the present invention further includes a roll map correction unit 650 that performs the correction, and the second process control unit 640 can stop the movement of the electrodes based on the coordinates of the defective section NG displayed on the corrected roll map. The roll map correction unit 650 can identify the coordinate values ​​of the defective section NG by correcting the coordinate values ​​in reverse order based on the coordinate information of the defective section NG displayed on the roll map of the first process, as shown in Figure 20.Therefore, the second process control unit 640 can calculate the time when the defective section NG displayed in the first process will arrive at the defect removal port based on this, and can stop the electrode movement in the second process when the defective section NG arrives at the defect removal port 610. In other words, it can halt the operation of the second unwinder UW2 and the second rewinder RW2.

[0428] On the other hand, if a portion of the electrode end is removed after the first process is completed and before the second process is started, the roll map correction unit 650 removes the coordinate values ​​corresponding to the removed portion of the electrode end from the roll map of the first process, as shown in FIG. 21, and converts and corrects the roll map coordinate values ​​of the first process in reverse order so that the coordinate values ​​of the start of the roll map of the first process and the end where the portion of the electrode end has been removed are reversed, and the second process control unit 640 may stop the electrode movement based on the coordinate values ​​of the defective section NG displayed on the corrected roll map.

[0429] In the first process 100, the electrode is moved between the first unwinder UW1 and the first rewinder RW1 in a roll-to-roll manner before the second process, and the coordinate value data is generated as a roll map by the roll map generator 40. As described above, the roll map generator 40 may be a data processing system such as an MES or SPC, or a component of such a system. The roll map generated by the roll map generator 40 may be stored in a roll map storage unit 80 such as a server or database. When stored, identification information such as the lot number of the electrode may be stored together. Therefore, for example, when the unwinder UW2 of the second process scans and acquires the identification information of the electrode 1, the control unit 640 of the second process may download the roll map of the electrode 1 with the identification information from the roll map storage unit 80. The electrode roll map with the identification information is corrected by the roll map corrector 650 and transmitted to the control unit 640, which then uses the roll map to stop the electrode 1 in the defective section NG at the defect removal port 610. In the second step, a second unwinder UW2 and a second rewinder RW2 are installed to perform the roll pressing step, and a predetermined inspection and / or measuring instrument 630 may also be installed above the electrode. The inspection and / or measuring instrument 630 may be, for example, an inspector that measures the thickness of the electrode or a vision inspector that detects the occurrence of wrinkles.

[0430] In addition, the second process control unit 640 may control the electrode of the second process to move slowly during a predetermined time interval between a predetermined time point before the arrival of the defective section NG at the defect removal port 610 and the arrival time. The slow movement control is performed to allow time for an operator to perform defect removal work at the defect removal port 610. Alternatively, when the electrode 1 moves slowly in the second process, the operator may recognize that the defective section NG will soon arrive at the defect removal port 610 and move to the defect removal port. The predetermined time point or predetermined time interval may be suitably determined in consideration of the distance between the second unwinder UW2 and the defect removal port, etc.

[0431] Furthermore, the defect removal device 600 of the present invention may further include an alarm unit 660 that issues an alarm at least one of the following events: when the defective section NG arrives at the defect removal port 610; when the movement of the electrode 1 in the second step stops; and after a predetermined time has elapsed since the movement of the electrode in the second step stops. If necessary, the alarm may be issued when the slow movement of the electrode 1 begins. When the alarm sounds when the removal port arrives or when the movement of the electrode stops, the operator can remove the defective section NG.

[0432] In this case, even if the defective tag G is lost, the worker can remove the defective section NG by referring to the roll map of the first process (more precisely, the coordinate-corrected first process roll map). Since the length of the defective section NG is displayed in coordinate values ​​on the roll map, the worker can remove the defective section NG by referring to the coordinate values. Alternatively, an alarm can be issued if the defect removal work is not performed even though a predetermined time has passed since the electrode movement stopped. In this case, the worker can hear the alarm and move to the defect removal port 610 to remove the defective section. The alarm activation of the alarm unit 660 can be controlled by the second process control unit 640.

[0433] As described above, by correcting the roll map coordinates in the pre-process according to the present invention, the roll map in the pre-process can be used in the post-process without any errors. Furthermore, by using the roll map information and the roll map coordinate correction, defects occurring in the pre-process can be reliably and easily removed in the post-process without any omissions.

[0434] After the tabs are formed in the notching process, a separator is inserted between the positive and negative electrodes to form an electrode assembly, which is then stacked or folded, packaged in a pouch or can, and filled with electrolyte to form a secondary battery. The assembled secondary battery is then charged and discharged, and undergoes an activation process to impart battery characteristics, resulting in the final product.

[0435] FIG. 25 shows the state of the electrode after undergoing such an electrode manufacturing process.

[0436] The coated electrode 1 is manufactured by coating the current collector with an active material in a coater C to form a coated portion 1a. A reference point may be marked on the non-coated portion 1b, which is not coated with the active material. The active material is usually coated on the entire top and back surfaces of the electrode 1. The coated electrode 1 is pressed by a press roll in the roll pressing process, and cut along the longitudinal direction of the electrode 1 by a slitter in the slitting process.

[0437] Thereafter, in a notching process, the electrode tabs 2 are formed by punching using a press or the like. In the notching process, the electrode tabs 2 are formed for each unit electrode so that they can be cut for each unit electrode to be manufactured into a battery cell or cut in a subsequent process. The width of the unit electrode corresponds to the pitch P (pitch) of the press.

[0438] This electrode manufacturing process is performed through a series of roll-to-roll processes in which an electrode unwound from an unwinder is moved and wound on a rewinder, which are sequentially and repeatedly performed. That is, the electrode is coated while moving from the unwinder of the coating process to the rewinder, and the electrode is wound on the rewinder to complete an electrode roll for the coating process. Next, the electrode roll is attached to the unwinder of the roll press process and moved to the rewinder of the roll press process. The electrode roll is wound on the rewinder of the roll press process to complete an electrode roll for the roll press process. Thereafter, the electrode roll moves again in a roll-to-roll state from the unwinder of the subsequent process (e.g., a second roll press process, a slitting process, or a notching process) and is wound on the rewinder of the subsequent process to complete an electrode roll for the subsequent process. In this way, the electrode manufacturing process consists of a series of roll-to-roll processes in which an electrode unwound from an unwinder is moved and wound on a rewinder (roll-to-roll process) to be sequentially and repeatedly performed.

[0439] A roll map is a bar graph that shows the progress of the electrode, with the longitudinal and transverse positions of the electrode indicated by coordinates. Information about defects, quality, electrode breakage, and other issues that occur during the electrode manufacturing process is also displayed on the roll map along with the coordinates, allowing users to visually and easily grasp data about quality and defects in the electrode manufacturing process at a glance.

[0440] Referring to Figure 5, visual defects such as pinhole defects f1 and line defects f2 are visually displayed at the coordinates where the defects occur. Also displayed is the mismatch between the coated and uncoated portions f3. Other defects such as loading amount defects are also displayed, including the outermost portion where the electrode was discarded.

[0441] In addition, reference points M1, M2, and M3 marked on electrode 1 may be displayed at predetermined intervals. If electrode 1 is broken and repaired with a joint repair member, the electrode length will be reduced by the length of the break. As described above, the location of the defective appearance may also be removed and repaired by the operator. The roll map may also reflect this situation and modify the coordinates on the roll map. Referring to FIG. 5, the coordinates where the removed electrode portion is not reflected and the coordinates where it is reflected are both displayed on a single roll map. The former are referred to as absolute coordinate A, and the latter as relative coordinate B. As shown in FIG. 5, the relative coordinate B and absolute coordinate A may be displayed together on a single roll map, or they may be displayed separately. The roll map displayed with relative coordinate B indicates the actual electrode state.

[0442] Such roll maps may be created for each of the detailed processes described above. However, in the roll-to-roll process, since the electrode wound in the previous process is unwound in the subsequent process, the start and end of the electrode are reversed through the roll-to-roll process, such that the end of the roll map representing the electrode roll in the previous process becomes the start of the roll map representing the electrode roll in the subsequent process. Furthermore, in the case of a double-sided electrode in which an electrode active material is coated on both sides of the electrode, the electrode surface may be reversed, such as the top electrode in the previous process becoming the back electrode in the subsequent process. That is, the electrode may be reversed from start to finish and its surface may be reversed depending on the electrode winding direction in the previous process and the electrode unwinding direction in the subsequent process. Since the roll maps for each process are created based on such reversed electrodes, the coordinates of the roll maps for each process are also reversed. Furthermore, the electrode length may change as the electrode is cut and reconnected several times in the longitudinal direction through a series of roll-to-roll processes, for example, to remove defective or broken sections. The roll maps for each process reflect this reversal and length change, and therefore have different coordinate values.

[0443] In the final step of the electrode manufacturing process (e.g., the notching process), only the remaining electrode (the living electrode) remains, excluding the electrode portion removed in the previous process. Since batteries are manufactured with the living electrode, if a problem occurs in a finished or semi-finished battery, the cause of the problem can be traced by referring to the roll map of the final electrode. Furthermore, by referring to the roll maps of each of the above processes, the electrode portion from which the problem originated can be traced back. In this way, the roll map is a useful tool for tracking quality as well as identifying quality and defects.

[0444] However, as described above, the start and end and / or surface of the electrode are inverted and its length changes throughout the series of roll-to-roll processes, so the coordinates of the roll maps for each process do not match. Therefore, even if a roll map is created for each process, it is difficult to trace the cause of the problem by comparing it with the roll map of the final surviving electrode.

[0445] In order to solve the above problems, the present invention aims to provide a roll map creation system that can easily grasp data regarding the quality or defects of surviving electrodes that have survived the final process by making the coordinate values ​​of the roll map for each process in a series of roll-to-roll processes coincide with the coordinate values ​​for the final process.

[0446] Figure 26 is a schematic diagram of one embodiment of the roll map creation system of the present invention, Figure 27 is a schematic diagram showing an example of a roll map creation device and roll map in an electrode coating process, Figure 28 is a schematic diagram showing the principle of obtaining inspection data by an inspection instrument and the coordinate values ​​of the inspection data, and Figure 29 is a schematic diagram showing an example of a roll map creation unit.

[0447] As described above, the roll map creation system 1000 of the present invention is a roll map creation system for a series of roll-to-roll processes in which the electrode 1 unwound by the unwinder UW is moved and wound by the rewinder RW, and the process is sequentially and repeatedly performed. FIG. 26 illustrates a coating process, a roll press (R / P) process, and a notching process as examples of the series of roll-to-roll processes. The roll press process may be performed once or multiple times as necessary. In addition, a slitting process in which the electrode 1 is cut in the longitudinal direction may be interposed after the roll press process. Therefore, the series of roll-to-roll processes that are the subject of the present invention are not limited to the example of FIG. 26 and may include more or fewer roll-to-roll processes or other roll-to-roll processes depending on the type of electrode 1 and manufacturing equipment.

[0448] The roll map creation system 1000 of the present invention includes a roll map creation device 1100 that creates a roll map for each process, which is defined as a coordinate plane having two coordinate axes, the longitudinal axis and the width axis of the electrode 1, and which creates a roll map that can display the position of the electrode 1 in each process using coordinate values ​​on the coordinate plane, and a roll map matching unit 1200 that matches the coordinate values ​​of the roll map for each process with the coordinate values ​​of the roll map for the final process so that the actual electrode represented by the roll map for the final process in a series of roll-to-roll processes matches the actual electrodes represented by the roll maps for each process before the final process.

[0449] The roll map is a visual representation of the electrode 1 moving between the unwinder UW and the rewinder RW in a roll-to-roll manner, represented in the form of a bar. Therefore, the length and width of the roll map correspond to the length and width of the actual electrode. That is, the roll map is defined as a coordinate plane having two coordinate axes, the longitudinal axis and the width axis of the electrode 1. The position of the electrode 1 can be displayed using coordinate values ​​on the coordinate plane. For example, if a defect occurs at a specific position on the electrode 1, the defect location can be displayed using specific coordinate values ​​on the roll map, as shown in FIG. 5. In FIG. 5, the longitudinal coordinate is displayed at the bottom of the roll map. For simplicity, the width coordinate is not shown numerically on the roll map. However, appearance defects such as pinhole defects f1 and line defects f2 are visually displayed at the longitudinal and width coordinates where the defect occurs. In this way, the roll map can clearly display defects at specific positions (longitudinal and axial coordinates) on a coordinate plane represented by two coordinate axes.

[0450] Such a roll map can be created for each step in the roll-to-roll process. Referring to Figure 26, there are shown a roll map creation device 1110 for the coating step, a roll map creation device 1120 for the roll press step, and a roll map creation device 1130 for the notching step. These roll map creation devices 1110, 1120, and 1130 for each step constitute the roll map creation device 1100 of the present invention.

[0451] FIG. 27 shows an example of a roll map creating device 1110 in the electrode coating process.

[0452] The roll map creating device 1110 includes a position measuring instrument 20, an inspection and / or measuring instrument 10, and a roll map creating unit 40.

[0453] In the roll-to-roll process, the electrode 1 is mounted between the unwinder UW and the rewinder RW. The electrode 1 is unwound from the unwinder UW and coated with an active material by the coater C. After coating, reference points are marked at predetermined intervals on the uncoated portion 1b of the electrode 1 by the marking machine MM. If the electrode length changes due to breakage or defective removal, the changed electrode length can be determined by the change in the interval between the reference points M. Since the electrode 1 moves with the rotation of the unwinder UW and the rewinder RW, the longitudinal position of the electrode 1 can be determined based on the amount of rotation of the unwinder UW or the rewinder RW. The position measuring device 20 can acquire the longitudinal position of the electrode 1 as a coordinate value of the electrode's longitudinal axis. For example, for a 1,200-meter-long electrode 1, a coordinate of 0 acquired by the position measuring device 20 indicates the start of the electrode 1, and a coordinate of 1,200 meters indicates the end of the electrode 1. The position measuring device 20 may be rotary encoders 20U and 20R installed on the unwinder UW and rewinder RW. Typically, the rotary encoders 20U and 20R are installed in a motor drive unit that drives the unwinder UW and rewinder RW and can detect the electrode movement distance according to the motor rotation speed (amount of rotation). Therefore, when the electrode 1 moves between the unwinder UW and the rewinder RW, the movement distance can be detected by the rotary encoders 20U and 20R. For convenience of explanation, FIG. 27 shows the unwinder encoder 20U and the rewinder encoder 20R disposed outside the unwinder UW and the rewinder RW, respectively. However, the encoders may be built into the unwinder UW and the rewinder RW, respectively. However, the roll map may be created after the electrode 1 is completely wound around the rewinder RW and the electrode winding roll is completed, i.e., after all coordinate data and all inspection and / or measurement data corresponding to the electrode length have been input. Therefore, it is preferable to use a rotary encoder 20R installed on the rewinder RW as the position measuring device 20 for creating the roll map.In this specification, roll map creation and roll map matching, which will be described later, will be explained based on coordinate values ​​obtained with the rewinder as the reference.

[0454] The roll mapping device 1110 also includes predetermined testing and / or measuring instruments 10 adjacent the electrode transfer line for measuring the quality or failure of the electrodes 1 .

[0455] The inspection and / or measurement device 10 inspects the electrode 1 to obtain inspection and / or measurement data, and is connected to the position measurement device 20 via a wire or wirelessly to obtain the inspection and / or measurement data as well as the longitudinal axis coordinate values ​​of the electrode portion from which the inspection and / or measurement data was obtained. The inspection and / or measurement data may include data on the quality and defects of the electrode 1, and data on the reference point positions described above.

[0456] The inspection and / or measurement data may be one or more of the following: 1) Data on at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on the electrode 4) Data on electrode appearance 5) Data on the location of electrode disconnection sections or electrode connection positions, or data on electrode joints 6) Data regarding the location of the sample testing unit 7) Data on the location of the electrode disposal section 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrode 11) Data on electrode thickness after roll pressing

[0457] The inspection and / or measurement instrument 10 installed at each step may be different, and therefore the inspection and / or measurement data inspected at each step may also be different depending on the processing performed at each step.

[0458] In FIG. 27, the inspection and / or measuring instruments 10 include a loading amount measuring instrument 11, a reference point measuring instrument 12, and a visual inspection instrument 13.

[0459] In the coating process, the coating amount during slurry coating, i.e., the loading amount, is important. Therefore, the loading amount is measured using a loading amount meter 11 during the coating process. If the loading amount falls outside the set range, it is determined to be defective and can be visually displayed separately from the rest of the work using a visualization device (described later). Alternatively, even if the loading amount is within the normal range and not defective, it can be visually displayed in different colors. In this sense, the inspection and / or measurement data of the present invention is not limited to defects but also encompasses quality-related data. In Figure 27, the loading amount is displayed on a roll map using varying colors from dark to light. That is, the darkest color represents excessive loading, the next darkest color represents normal loading, and the lightest color represents underloading. However, this is only one example of a visual representation of the loading amount; loading amount can be displayed using various methods, such as color, saturation, and brightness.

[0460] In addition, reference points M may be marked at predetermined intervals on the electrode 1 and used to calculate the electrode breakage length, etc. A reference point measuring device 12 that detects the position of such reference points M may also be provided as the inspection and / or measuring device 10.

[0461] On the other hand, if an electrode breaks during the process and is connected with a joint connecting member (connecting tape), a joint measuring device that detects the joint may also be provided as one of the inspection and / or measuring devices 10.

[0462] The inspection and / or measuring device 10 may also include a dimension and width measuring device for measuring the dimensions and widths of the coated and uncoated portions. The dimension and width measuring device may also display different visual images for data outside a set range as defective data, or for data within the normal range but divided into different dimension and width ranges. The dimension and width measuring device may also obtain data regarding mismatches between coated and uncoated portions on the electrode 1.

[0463] An electrode appearance inspector 13 may also be provided to obtain data on the electrode appearance, including appearance defects such as pinhole defects and line defects.

[0464] The above-mentioned inspection devices are examples of devices mainly used in the electrode coating process. When the process is different, for example, in a roll press process, an inspection device for obtaining data on the electrode thickness after rolling by a press roll may be used instead of the above-mentioned loading amount inspection device.

[0465] The inspection and / or measurement instruments 10 are not limited to those described above. If there are other measurement parameters obtainable from the electrodes 1, other specified inspection and / or measurement instruments 10 capable of inspecting or sensing those parameters may also be applied to the roll map creation device 1100 of the present invention. Furthermore, the inspection and / or measurement instruments 10 described above do not necessarily need to be provided separately. A single inspection and / or measurement instrument 10 may acquire multiple inspection and / or measurement data, thereby reducing the number of required inspection and / or measurement instruments 10. Alternatively, multiple inspection and / or measurement instruments 10 with the same name may be provided depending on the application. For example, a color sensor, which functions as a seam measurement instrument, inspects the appearance and may therefore also be considered an appearance inspection instrument 13. Furthermore, a vision measurement instrument can measure mismatches and therefore be considered a dimension and width measurement instrument. However, since the vision sensor included in the measurement instrument can also sense reference points, it can also be considered a reference point measurement instrument.

[0466] Such an electrode inspection and / or measurement instrument 10 is linked to the position measurement instrument 20, and can transmit the inspection and / or measurement data together with coordinate values ​​(position data) of the electrode portion from which the inspection and / or measurement data was acquired to a roll map creation unit 40, which will be described later, via a control unit 30 that controls the roll-to-roll transfer process, or directly. The roll map creation unit 40 can visually display such inspection and / or measurement data and coordinate values ​​on a roll map of the coating process.

[0467] FIG. 28 is a schematic diagram showing the principle of acquiring inspection data by an inspection instrument and coordinate values ​​of the inspection data.

[0468] In Figures 27 and 28, when the above-mentioned inspection and / or measuring device inspects electrode 1 and acquires inspection data, the position of the electrode portion is detected by the position measuring device 20 of the rewinder RW. However, at the time the inspection data is acquired, the electrode portion has not yet arrived at the rewinder RW. In this embodiment, since the roll map coordinates are based on the rewinder RW, the longitudinal coordinate sensed when the electrode portion actually arrives at the rewinder RW becomes the longitudinal coordinate of the electrode portion. Therefore, the longitudinal coordinate value of the electrode portion from which inspection data is acquired must be calculated by adding the distance (offset distance) from each inspection device to the rewinder RW to the encoder value (longitudinal coordinate value) of the rewinder RW at the time of data acquisition. For example, the longitudinal coordinate value of electrode portion a, whose loading amount is sensed by the loading amount measuring device 11, is calculated by adding the encoder value (coordinate value) A of the rewinder RW at the time of sensing to the offset distance L1 between the loading amount measuring device 11 and the rewinder RW. Using the same principle, the longitudinal coordinate value of electrode portion b, whose reference point is detected by reference point measuring device 12, is the sum of the encoder value B of the rewinder RW at the time of detection and the offset distance L2 between reference point measuring device 12 and the rewinder RW. Also, the longitudinal coordinate value of electrode portion c, whose appearance is detected by appearance inspector 13, for example, is the sum of the encoder value C of the rewinder RW at the time of detection and the offset distance L3 between the appearance inspector 13 and the rewinder RW.

[0469] On the other hand, the width direction coordinate value of the electrode portion from which the inspection and / or measurement data is obtained can be obtained by the inspection and / or measurement device.

[0470] For example, an inspection and / or measuring instrument 10, such as the appearance inspector shown in FIG. 27, may be equipped with a program capable of scanning and inspecting the appearance of an electrode 1 along the entire width direction. Alternatively, the inspector itself may be installed so as to be movable along the width direction of the electrode. Alternatively, multiple inspectors may be installed along the width direction of the electrode. This allows the inspection and / or measuring instrument 10 to obtain data related to quality or defects (e.g., loading amount data and appearance defect data) for each point in the width direction of the electrode. The inspection and / or measuring instrument 10 may also obtain data (coordinate values) of the width direction position at which the data was obtained. This allows each inspection and / or measuring instrument 10 to obtain all inspection and / or measurement data (e.g., data related to quality or defects), as well as the longitudinal and width direction coordinate values ​​of the electrode 1 at which the inspection and / or measurement data was obtained, and transmit these to a roll map creation unit 40, described below.

[0471] FIG. 29 is a schematic diagram showing an example of the role map creating unit 40. As shown in FIG.

[0472] The roll map creating device 1110 includes a roll map creating unit 40 that creates a roll map in cooperation with the position measuring device 20 and the testing and / or measuring device 10. The roll map creating unit 40 may include a database 41 that stores data acquired from the testing and / or measuring device 10 and the position measuring device 20, or that stores data related to the quality, dimensions, etc. of normal electrodes. The roll map creating unit 40 may also include a central processing unit 42 that processes the acquired data and commands a visualization device 43 included in the roll map creating unit 40 to visualize the data.

[0473] The roll map creation unit 40 includes a visualization device 43 that defines a visualization area forming a coordinate plane of a roll map that replicates the electrode 1 and can visually display the longitudinal axis coordinate values, width axis coordinate values, and inspection data of the electrode on the defined area. The visualization device 43 can visualize and display the inspection and / or measurement data in the form of coordinate values ​​of the inspection and / or measurement data. The visualization device 43 is connected to the central processing unit 42 and can visualize and display the inspection and / or measurement data and coordinate data according to instructions from the central processing unit.

[0474] Referring to FIG. 29, the visualization device 43 may include an acquired data input unit 43a, a roll map coordinate grasping unit 43b, an image creating unit 43c, and the like.

[0475] The acquired data input unit 43a receives and inputs data from the database 41 or the central processing unit 42 connected thereto.

[0476] The roll map coordinate ascertainment unit 43b may define a visualization area forming the roll map and define pixel coordinate values ​​within the visualization area for each data element of the acquired source data. When data regarding specifications such as the lot number, length, and width of the electrode roll are input to the control unit 30 or a server through electrode roll information registration, the roll map coordinate ascertainment unit 43b may calculate and determine the visualization area of ​​the roll map in accordance with a predetermined scale conversion scale from such data regarding the size of the electrode 1. Alternatively, the roll map visualization area may be calculated and determined in accordance with a predetermined scale conversion scale from the coordinate value data of the longitudinal and width directions of the electrode 1 described above.

[0477] The coordinate grasping unit 43b can map the acquired data regarding quality or defects and the (width and length) position data of the electrode 1, and assign the mapped data on the visualization area (roll map) based on pixel coordinates.

[0478] The image creating unit 43c may represent the mapped data elements assigned to each pixel coordinate in the visualization area using at least one legend. A legend refers to various shapes, such as a circle, a square, or a triangle, displayed in the visualization area, or the above shapes with colors. Therefore, the image creating unit 43c visually displays various data related to quality or defects at pixel coordinates (coordinates on the roll map) corresponding to each position data of the actual electrode 1 in a visualization area called a roll map using display units with patterns, shapes, and colors designated for each data, and embodied on the roll map, thereby creating the roll map of the present invention.

[0479] In addition, the central processing unit 42 can retrieve data corresponding to a specific range of the role map from the storage unit and display (create an image) it on the screen based on the data stored in the storage unit such as the database 41. In this case, the central processing unit 42 can issue a command to the visualization device 43 to visually display test data that has been found to be abnormal in comparison with normal data stored in the database 41, distinguishing it from other data.

[0480] The size setting of the visualization area and the creation of an image by grasping the coordinates of the visualization area can be performed using various conventional user interfaces, or various programs and processing tools related to data allocation, processing, analysis, and visualization. Therefore, the role map creation unit 40 described above is merely an example, and is not limited to the above embodiment.

[0481] The roll map creation unit 40 described above may be, for example, a data processing system such as a manufacturing execution system (MES) or a component of the data processing system. A data processing system refers to a system (including hardware and software) that performs input, processing, output, communication, etc. to perform a series of operations on data. The electrode 1 manufacturing process includes an electrode MES, an assembly MES, etc. that manage a series of electrode manufacturing processes such as coating, pressing, and slitting. Therefore, when the coordinate value data, inspection data, etc. described above are sent to the MES, the MES can create the roll map described above.

[0482] The roll map creating device 1110 may further include a control unit (PLC control unit) 30 that controls electrode movement between the unwinder UW and the rewinder RW.

[0483] The control unit 30 is connected to the position measuring unit 20 and the inspection and / or measurement unit 10, and may transmit the inspection and / or measurement data and coordinate values ​​of the electrode portion from which the inspection and / or measurement data was acquired to the roll map creating unit 40. In this case, the control unit 30 may match the coordinate values ​​with the inspection and / or measurement data, or may process the inspection data and coordinate data into a form that is easy to process in the roll map creating unit 40. Since the PLC control unit 30 is connected to the inspection and / or measurement unit 10, an encoder, etc. to control the roll-to-roll transfer of the electrodes, transmitting data via the control unit 30 is more efficient in terms of data processing and management than transmitting data directly from the inspection and / or measurement unit 10, an encoder, etc. to a data processing system such as an MES.

[0484] In addition, the control unit 30 of each roll-to-roll process stores information regarding the electrode winding direction on the rewinder RW and the electrode unwinding direction on the unwinder UW. That is, information regarding whether the electrode winding direction is forward (clockwise) or backward (counterclockwise) and whether the electrode unwinding direction is forward or backward is automatically stored in the control unit 30 that controls the roll-to-roll process. As will be described later, the electrode winding direction and unwinding direction differ in the preceding and succeeding processes, such as the start and end portions of the electrode being reversed or the top and back surfaces of the electrode 1 being reversed. Therefore, by transmitting this information to the roll map matching unit 1200, which will be described later, it can be reflected when matching roll map coordinate values, allowing the roll maps of each process to match.

[0485] The role map creation unit 40 creates a role map using the above-mentioned data. An example of such a role map is shown in FIG.

[0486] The top of Figure 27 shows an absolute coordinate roll map R1 of the coating process, and below it is a relative coordinate roll map r1. The absolute coordinate roll map R1 is a roll map that shows, in the coordinate space, both the coordinate values ​​of the electrode portions removed during and between each process and the coordinate values ​​of the surviving electrodes excluding the removed electrode portions. The relative coordinate roll map r1 is a roll map that shows, in the coordinate space, only the coordinate values ​​of the surviving electrodes excluding the removed electrode portions.

[0487] The relative coordinate role map r1 represents the surviving electrodes that have survived the process, and therefore the relative coordinate role map r1 is the role map that represents the real electrodes.

[0488] FIG. 27 shows a roll map for an electrode with a total length of 1,200 meters. Reference points M are marked at 300, 600, and 900 meters, which correspond to the 25%, 50%, and 75% points of the electrode. Based on data sensed by the reference point measuring device 12, the reference points M are displayed on the roll map at the corresponding coordinate values. The loading amount is also displayed in different shades of light and dark across the corresponding coordinate intervals. However, the white section v indicates an interval where the loading amount measuring device 11 was unable to inspect. When the electrode moves from roll to roll, intervals where the inspector was unable to obtain data may occur due to various reasons, such as electrode vibration, the sensitivity of the inspector, or problems with data communication.

[0489] Meanwhile, the coordinates of the right end of the roll maps R1 and r1 are the start and have a coordinate value of 0, while the left end is the end and has a coordinate value of 1200 meters. The rewinder RW starts winding at the start, and the rewinder RW encoder value (coordinate value) is 0 at this time. When winding is completed, the rewinder encoder value is 1200. However, in reality, about 1100 meters of electrode 1 was wound, and about 100 meters of the electrode end were trimmed. This trimming of the electrode after the electrode roll is completed is called post-completion removal. Because the quality of the start and end of the electrode is often inconsistent, electrode 1 is often trimmed before winding begins or at the end of winding. In contrast, defective sections may be trimmed during the process and electrode 1 reconnected, which is called self-process removal. The roll map also displays information about such changes in electrode length. Such changes in electrode length can be identified by detecting (inspecting) changes in the distance between the reference points M described above. The absolute coordinate roll map R1 also shows the 100-meter-long electrode that was removed after completion, but the relative coordinate roll map r1 only shows the remaining electrodes (surviving electrodes) excluding the removed electrodes. The relative coordinate roll map shows the end of the electrode as 1,100 meters.

[0490] The roll map in Figure 27 also displays a defective section NG. In the electrode coating process, the section between 800 meters and 1000 meters is identified as a defective section NG by the visual inspector 13 or by an operator's visual inspection, and a defective tag or the like can be attached to this defective section NG. When the inspector detects such a defective tag or the like, the coordinates of the defective section NG can be displayed on the roll map.

[0491] To provide a reference point for comparison when creating roll map matching and overlay roll maps (described later), a specific position on the roll map, 650 meters, is marked with an asterisk. The asterisk may indicate a visual defect or a reference point indicating a specific quality characteristic. The longitudinal axis coordinate value of the point marked with the asterisk is 650 meters. When the width of the electrode is 60 cm, the width axis coordinate value of the asterisk point is 40 cm (0.4 m) from the bottom end of the electrode. The coordinate value of the asterisk point can be obtained by a specific inspection device that can detect the asterisk, as described above.

[0492] As shown in FIG. 29, the roll map creating device 1100 displays the created roll map on the display unit 1300, so that data on quality and defects can be visually and easily grasped at a glance.

[0493] In Figure 27, the inspection and / or measuring instrument 10 is positioned on the top surface of the electrode, and can be used to create a roll map of the top surface of the electrode. However, by placing the inspection and / or measuring instrument on the back surface of the electrode, a roll map of the back surface of the electrode can also be created. Alternatively, depending on the factory equipment layout, the electrode can be passed under the inspection and / or measuring instrument with the top surface facing up, and then the electrode can be turned over using guide rolls or the like, and passed under the same inspection and / or measuring instrument with the back surface facing up, thereby creating roll maps of the top and back surfaces of the electrode.

[0494] FIG. 30 is a schematic diagram showing an example of roll maps of the upper and lower surfaces of the electrode.

[0495] In Figure 30, the upper part of the drawing is not a roll map, but rather shows the current state of raw material input so that it can be compared with the roll map. Specifically, "c" in the upper part of the drawing shows the current collector, and "1a" shows the coating area to be coated on the top and back surfaces of the current collector. The lower part of Figure 30 shows roll maps of the top surface T and back surface B of the electrode. As shown in the figure, even for the same electrode, the loading amount and appearance defects appear differently on the top and back surfaces. For this reason, roll maps must be created for both the top and back surfaces in the electrode coating process.

[0496] FIG. 31 is a schematic diagram showing an electrode reversal mode according to the winding direction in the preceding process and the unwinding direction in the following process.

[0497] As shown in Figure 31, the electrode winding direction in the rewinder RW in the preceding process is divided into an upper winding direction (forward direction: clockwise) and a lower winding direction (reverse direction: counterclockwise). The electrode winding roll wound in these two different directions can be unwound in the upper unwinding direction (forward direction: clockwise) and the lower unwinding direction (reverse direction: counterclockwise) by the unwinder UW in the following process.

[0498] The electrode path is divided into four paths in total, depending on the electrode winding direction in the rewinder RW in the preceding process and the electrode unwinding direction in the rewinder RW in the following process.

[0499] First, when the rewinder winding direction is top winding in the preceding process and the unwinding direction is top unwinding in the following process, the start (S: Start) and end (E: End) of the electrode in the preceding process are reversed. Reversing the start and end of the electrode means that the coordinate axes that make up the coordinate plane of the roll map are moved symmetrically.

[0500] Figure 32 shows in one diagram that the coordinate axes of the roll map are reversed in the preceding and following processes. The upper part of the roll map in Figure 32 shows the coordinate axes (X-axis and Y-axis) and coordinate values ​​for the preceding process. In the preceding process, the electrode moves from the unwinder UW to the rewinder RW and is wound up by the rewinder RW. At this time, the coordinate values ​​of the triangle point were measured as follows: the longitudinal axis (X-axis) coordinate is 700 meters, and the width axis (Y-axis) coordinate is 2 meters from the bottom end of the electrode (assuming the electrode width is 3 meters). When the electrode roll is completely wound up by the unwinder UW in the preceding process and then loaded onto the rewinder RW in the following process, the 1200-meter point, which is the end of the electrode roll in the preceding process, becomes 0 meters, which is the start of the following process. In other words, due to the characteristics of the electrode roll, the start and end of the preceding and following processes are reversed. To explain the above inversion based on the coordinate planes of the preceding and succeeding processes, the longitudinal axis (X-axis) of the preceding process is moved symmetrically with respect to the widthwise axis (Y-axis) to become the longitudinal axis (X'-axis) of the succeeding process, and the widthwise axis (Y-axis) of the preceding process is moved symmetrically with respect to the longitudinal axis (X-axis) to become the widthwise axis (Y'-axis) of the succeeding process. Therefore, the coordinate values ​​of the triangle point in the preceding process (700 meters, 2 meters) are also inverted to (500 meters, 1 meter) in the succeeding process.

[0501] Such reversals occur for all four electrode pathways.

[0502] In the first part of Figure 31, in the case of an electrode path in which the leading process is top winding and the trailing process is top unwinding, the black dots are moved between the leading and trailing processes, which indicates that the electrode in the leading process is reversed in the lengthwise and widthwise directions in the trailing process. In other words, the electrode is reversed throughout the entire process. In this case, the top and back surfaces of electrode 1 are not reversed.

[0503] Secondly, when the rewinder winding direction in the preceding process is top winding (clockwise winding) and the unwinding direction of the unwinder UW in the following process is bottom unwinding (counterclockwise unwinding), the electrode 1 is reversed from start to finish and the top and back sides of the electrode 1 are also reversed at the same time. For example, the electrode 1 that proceeds on the top side in the coating process is turned over and proceeds on the bottom side in the roll press process. Therefore, this point must be taken into consideration when performing roll map matching, which will be described later.

[0504] Third, when the rewinder winding direction in the preceding process is bottom winding (counterclockwise winding) and the unwinder unwinding direction in the following process is top unwinding (clockwise unwinding), the top and back surfaces of electrode 1 are inverted simultaneously as electrode 1 is inverted from start to finish, just like in the second case.

[0505] Fourth, when the rewinding direction of the rewinder is bottom winding in the preceding process and the unwinding direction of the unwinder is bottom unwinding in the following process, only the reversal of the electrode 1 occurs from start to finish as in the first case.

[0506] FIG. 33 is a schematic diagram showing an example of a roll map creating device 1120 and a roll map in the roll press process.

[0507] The roll press process is also provided with a position measuring device 20, an inspection and / or measuring device 10, and a roll map creating unit 40, in the same manner as the coating process described above.

[0508] The roll press process is a process in which the electrode 1 coated in the coating process is rolled using a press roll R, so the electrode thickness after rolling is important. Therefore, the roll press process is equipped with a thickness measuring instrument 14 instead of a loading amount measuring instrument. Similar to the coating process, the roll press process is also equipped with a reference point measuring instrument 12 and an appearance inspector 11. A predetermined displacement sensor or a confocal thickness sensor may be used as the thickness measuring instrument 14.

[0509] The roll map creation unit 40 for the roll press process also works in conjunction with the position measurement device 20 and the inspection and / or measurement device 10 to form a coordinate plane for the roll map. The upper drawing in FIG. 33 shows roll maps R2 and r2 for such a roll press process. The roll maps are visually indicated by different hatching depending on the electrode thickness. Even in this roll map, there may be a portion v where the inspection and / or measurement data is not reflected.

[0510] The topmost role map in FIG. 33 is the absolute coordinate role map R2, and the role map below it is the relative coordinate role map r2.

[0511] Because 100 meters of the electrode end were removed at the end of the coating process or after the coating process was completed, the end coordinate value of the absolute coordinate roll map R2 for the roll press process is also 1100 meters. Furthermore, because the electrode roll start and end points for the coating and roll press processes were reversed, the roll map coordinates for the roll press process were also reversed. As a result, the reference point M coordinate value for the coating process and the reference point M coordinate value for the roll press process also changed. Furthermore, due to the reversal of the start and end, the coordinates of the asterisk point also changed from (650,0.4) to (450,0.2). In the roll press process, the 800-1000 meter section marked as a defective section NG in the preceding coating process was reversed and became a 100-300 meter section. Such defective sections are removed by the defective section processing port table t and discarded in the defective removal port (scrap port: P).

[0512] The information regarding the removal of the defective section NG can be reported to the control unit 30 and the roll map creation unit 40 by the input device 60. By removing the defect in the 100-300 meter section, the 200 meter M point, which is the reference point within the defective section, is also removed.

[0513] The relative coordinate roll map r2 in FIG. 33 shows only the coordinates of the surviving electrodes that remain after such defective sections have been removed.

[0514] In the roll press process, roll maps can also be created for each of the upper and lower surfaces of the electrode 1.

[0515] In this case, as described above, if the rewinding direction of the coating process is the top winding direction and the unwinding direction of the roll press process is the bottom unwinding direction, the top surface of the electrode in the coating process is inverted to the back surface of the electrode in the roll press process. Also, if the rewinding direction of the coating process is the bottom winding direction and the unwinding direction of the roll press process is the top unwinding direction, the top surface of the electrode in the coating process is inverted to the back surface of the electrode in the roll press process. Information regarding such inversion is stored in the control unit 30 for the coating process and the control unit 30 for the roll press process, and the roll map creation unit 40 and the roll map matching unit 1200 create roll maps for each process by referring to this information and can match the roll maps for each process, as described below.

[0516] Figure 34 is a schematic diagram showing the roll map when electrode 1 is removed after the roll press process is completed. In this case, 50 meters of the end of the electrode is removed after the roll press process. This electrode removal is shown in absolute coordinate roll map r2 and relative coordinate roll map r2'.

[0517] FIG. 35 is a schematic diagram showing an example of a roll map creation device 1130 and a roll map in the notching process.

[0518] In the notching process, the electrode moving in a roll-to-roll state is punched by a punching machine BM to form electrode tabs. Also, a reference point measuring device 12 is provided to grasp the change in electrode length before, during, or after the notching process.

[0519] The top of Figure 35 shows an example of a roll map for the notching process. After the roll pressing process, electrode 1 was again reversed during the notching process. This caused the asterisk coordinates to change again from (450,0.2) to (600,0.4). After notching, 100 meters of the end of the electrode were removed. The absolute coordinate roll map R3 for the notching process shows the coordinates of the removed electrode portion, while the relative coordinate roll map r3 only shows the roll map coordinates of the remaining surviving electrode. Portions of the electrode were removed a total of four times through the coating process, roll pressing process, and notching process. As a result, the 1,200-meter-long electrode was finally reduced to a length of 750 meters.

[0520] On the other hand, unlike the coating and roll pressing processes, the notching process does not require the creation of separate roll maps for the top and back surfaces of the electrode. In the notching process, the top and back surfaces of the electrode are punched without any special processing. Therefore, unlike the previous process, complex inspection and / or measuring instruments for showing the electrode condition are not installed, and only a reference point measuring instrument for length change is installed. In other words, the properties of the top and back surfaces of the electrode can be adequately grasped from the roll maps of the coating and roll pressing processes, and in the notching process, the properties of the top and back surfaces do not change particularly due to notching. Therefore, in the notching process, it is sufficient to create a single-plane roll map that displays only coordinate values ​​on the above coordinate plane, regardless of the top and back surfaces of the electrode.

[0521] As described above, the roll map creation system 1000 of the present invention includes a roll map creation device 1100 that creates a roll map for each process. Referring again to FIG. 26, the coating process, roll press process, and notching process each include a roll map creation device 1110, 1120, and 1130, respectively. The roll map creation devices 1110, 1120, and 1130 for each process are combined to form the roll map creation device 1100 of the present invention. For ease of explanation, FIG. 26 shows the roll map creation units 40 for each process as being provided separately. However, as described above, the roll map creation units 40 may be an MES or a component of the MES, and a single integrated system may create all the roll maps for each process. In FIG. 26, the roll map creation units may be combined to form a single, integrated roll map creation unit 40, as indicated by a large rectangular box.

[0522] As described above, other roll-to-roll processes, such as a second roll-to-roll process or a slitting process, may be included between the roll-to-roll process and the notching process. This may result in more frequent electrode roll inversions and surface inversions during the series of roll-to-roll processes. The roll map creation unit 40 can create roll maps for each process by reflecting all of this inversion information.

[0523] The roll map creation system 1000 of the present invention includes a roll map matching unit 1200 that matches the coordinate values ​​of the roll map of each process with the coordinate values ​​of the roll map of the final process so that the actual electrodes represented by the roll map of the final process in a series of roll-to-roll processes match with the actual electrodes represented by the roll maps of each process before the final process.

[0524] As described with reference to Figures 26 to 35, when roll-to-roll processes are performed consecutively, the electrode roll of the preceding process and the electrode roll of the following process inevitably reverse from start to finish. Surface inversion may also occur depending on the winding direction of the preceding process and the unwinding direction of the following process. In addition, as electrodes are removed in each process, the roll map length and coordinate values ​​of each process also change. This changes the roll map coordinate values ​​for each process, making it difficult to compare such roll maps on a uniform basis. What is important is the electrode portion that survives to the final process and is used in the actual battery. If a problem occurs with a battery manufactured using such a surviving electrode, it is necessary to later determine which electrode portion of each detailed process in the electrode manufacturing process originated from that battery. However, as described above, the roll maps for each process have different coordinate values, making it difficult to track the quality of specific electrode positions.

[0525] The present invention includes a roll map matching unit 1200 for comparing roll maps of each process using the same reference or coordinate values. The roll map matching unit 1200 matches the roll maps of each process so that the real electrodes represented by the roll map of the final process in a series of roll-to-roll processes match the real electrodes represented by the roll maps of each process before the final process. That is, the roll maps are matched so that the real electrodes (surviving electrodes) of the final process correspond to the real electrodes of each process before that. From this perspective, the roll map matching unit 1200 matches the real electrodes of each process and the final process with the corresponding roll maps. The roll map matching is performed by matching the coordinate values ​​of the roll map of each process with the coordinate values ​​of the roll map of the final process.

[0526] 36 to 38 are schematic diagrams showing the role map matching process according to the present invention.

[0527] 36 shows, from top to bottom, an absolute coordinate roll map R1 and a relative coordinate roll map r1 for the coating process, an absolute coordinate roll map R2 and a relative coordinate roll map r2 for the roll pressing process, and an absolute coordinate roll map R3 and a relative coordinate roll map r3 for the notching process. These roll maps were created by the roll map creation device 1100 shown in FIGS. 27, 33, and 35, respectively.

[0528] As described above, the relative coordinate roll map represents the actual electrodes at each step excluding the electrode portions removed during or between steps. Therefore, the roll map matching operation of the roll map matching unit 1200 is to match the coordinate values ​​of the relative coordinate roll map at each step before the final step with the coordinate values ​​of the relative coordinate roll map at the final step.

[0529] Referring to FIG. 26, the roll map matching portion 1200 may include a roll map length matching portion 1210, a coordinate axis matching portion 1220, and a top and back surface matching portion 1230.

[0530] In a series of roll-to-roll processes, actual electrodes are removed before, during, or after each process due to defects or uneven quality. This results in differences between the roll map coordinate values ​​of the final process and those of each process. It is important to match the roll map coordinate values ​​of each process with those of the final process so that the actual electrodes (surviving electrodes) represented by the roll map of the final process match with the actual electrodes represented by the roll maps of each process. If there is no change in electrode length between the start and end of the roll-to-roll process, roll map length matching is not necessary. However, due to the nature of mass production, the quality of the start and end portions of electrodes is often uneven, and test production sections before mass production are often removed. Therefore, in reality, electrode length inevitably changes between the start and end processes for some reason. Taking this into account, the roll map matching unit 1200 includes a roll map length matching unit 1210 that accounts for electrode length changes.

[0531] For roll map length matching, it is necessary to remove all coordinate sections corresponding to the actual electrode portions cumulatively removed in a series of roll-to-roll processes from the roll map of each process. Then, by correcting the coordinate values ​​of the remaining coordinate sections removed from the roll map of each process to match the coordinate values ​​of the roll map of the final process, the roll map length of each process can be made to match the roll map length of the final process.

[0532] Furthermore, when the start direction of the roll map coordinate axis of a specific step before the final step is reversed from the start direction of the roll map coordinate axis of the final step according to the electrode winding direction in the rewinder RW of the preceding step and the electrode unwinding direction in the unwinder UW of the following step, the roll map matching unit 1200 matches the start direction of the roll map coordinate axis of the specific step to the start direction of the roll map coordinate axis of the final step. For this purpose, the roll map matching unit 1200 may include a coordinate axis matching unit 1220 that matches the coordinate axes.

[0533] As mentioned above, due to the characteristics of the roll-to-roll process, the roll map of the preceding process and the roll map of the following process inevitably have their start and end reversed. Since coordinate axis matching is performed to match the coordinate axis (start) direction of the roll map of the final process, it is only necessary to match the start direction of the roll map coordinate axis of a specific process that is opposite to the start direction of the roll map coordinate axis of the final process among the preceding processes before the final process. For example, in the case of a roll map of a process that matches the coordinate axis direction of the roll map of the final process among the preceding processes, such coordinate axis matching is not necessary.

[0534] Referring to FIG. 36, a total of four electrode removal operations were performed in the entire roll-to-roll process as follows. [1] Removal of the final 100 meters of the coating process [2] Removal of 200 meters of defective sections in the roll press process [3] Removal of the final 50 meters after the roll press process [4] Removal of the final 100 meters after the notching process is completed

[0535] The relative coordinate roll map r3 for the final notching process was 750 meters in total length after four electrode removals. The longitudinal coordinate of the asterisk point, which is the control electrode, was 600 meters and the width coordinate was 40 cm (0.4 meters).

[0536] To match the roll map length in the final process, all coordinate sections of the electrode parts that were removed four times in the entire roll-to-roll process were removed from the relative coordinate roll map of each process in Figure 37. In this case, the part shown in the dotted box in Figure 37 is the roll map part that represents the actual electrode that ultimately survived.

[0537] In this case, the starting direction of the roll map coordinate axis for the coating process is the same as the starting direction of the roll map coordinate axis for the notching process, so coordinate axis matching is not required. However, the starting direction of the roll map coordinate axis for the roll pressing process is reversed, so the starting direction of the coordinate axis is different from that of the coating process and notching process, so coordinate axis matching is required.

[0538] In Figures 36 and 37, the upper end portions of the absolute coordinate roll map R2 and the relative coordinate roll map r2 for the roll press process show coordinate values ​​before coordinate axis matching. These coordinate values ​​match the coordinate values ​​of the roll map shown in Figure 33. If these coordinate values ​​are inverted (corrected) as shown at the lower end portions of the roll map, they will become identical to the starting direction of the roll map coordinate axes for the notching process. Matching the roll map coordinate axes changes the reference point coordinate values, the coordinate values ​​of the defective section, and the coordinate values ​​of the asterisk point on the absolute coordinate roll map and the relative coordinate roll map for the roll press process. Specifically, the longitudinal and width axes, which are the roll map coordinate axes for the roll press process, are all aligned so that they coincide with the coordinate axis directions for the notching process. In Figures 36 and 37, the symbols R2-1 and r2-1 indicate that the coordinate axes of the absolute coordinate roll map R2 and the relative coordinate roll map r2 for the roll press process have been inverted. That is, R2-1 represents the absolute coordinate roll map of the roll press process with the coordinate axes reversed, and r2-1 represents the relative coordinate roll map of the roll press process with the coordinate axes reversed.

[0539] In Figure 37, the roll-to-roll process is composed of an odd number of times (three times), and the roll map coordinate axis directions of the first process (coating process) and the final process (notching process) are the same. Therefore, the roll map coordinate axis of the second process (roll press process), which is an even number of times and whose coordinate axis direction is reversed, is made to match the roll map coordinate axis of the final process. However, if a process is added and the entire roll-to-roll process is composed of an even number of times, unlike Figure 37, it is necessary to match the roll map coordinate axis of the odd number of processes, such as the first process, with the roll map coordinate axis of the final process, which is an even number of processes.

[0540] In this way, coordinate axis matching is performed relatively with the final process as the reference.

[0541] Figure 38 shows the roll maps finally matched through this roll map matching process. The coordinate sections corresponding to the removed electrode sections were removed from the roll maps for the coating and roll pressing processes, and the direction of the roll map coordinate axes was also aligned with the coordinate axis directions of the roll map for the notching process. As a result, the roll map coordinate values ​​for the final process, the notching process, exactly match the roll map coordinate values ​​for the preceding processes, the coating and roll pressing processes. The longitudinal and transverse axis coordinate values ​​of the asterisk points also match across all three roll maps, which were matched at 600 meters and 0.4 meters, respectively.

[0542] The roll map coordinate values ​​of each process are aligned so that they match the roll map coordinate values ​​of the survival electrode in the final process and are arranged so that they can be viewed at once, which is called an overlay roll map. The roll map matching unit 1200 of the present invention is ultimately used to create such an overlay roll map. By displaying such an overlay roll map on the display unit 1300, the quality history or manufacturing history of the final survival electrode can be grasped at a glance.

[0543] Referring to FIG. 38, the (overlay) roll map of the roll press process indicates that the battery manufactured using the electrode marked with an asterisk originated from an electrode with a rolled thickness (e.g., a rolled thickness within the normal range) indicated by specific hatching during the roll press process. Furthermore, the roll map of the coating process indicates that the battery manufactured using the electrode marked with an asterisk originated from an electrode with an excessively high coating load, which exceeded the normal range during the coating process. For example, if a battery manufactured using an electrode marked with an asterisk catches fire, it can be determined from the manufacturing history of the coating process that there was a problem with that electrode. Alternatively, the asterisk may be a defect in appearance or other areas. In other words, if a problem occurs with an electrode removed at the asterisk and this is due to an appearance defect, it can be easily determined from the overlay roll map which part of the electrode in the electrode manufacturing process caused the appearance defect.

[0544] In this way, the present invention creates a roll map for each process and matches the roll map for each process using the roll map matching unit 1200, making it possible to easily obtain data regarding the quality or defects of surviving electrodes that have survived the final process.

[0545] In addition, the inspection history of the electrode manufacturing process can be easily grasped using such a matched roll map (overlay roll map).

[0546] Furthermore, according to the present invention, even if the start and end of the electrode roll are reversed or the electrode length varies through a series of roll-to-roll processes, problems with electrode quality can be tracked intuitively and quickly by creating an overlay roll map through the roll map length matching and coordinate axis matching described above.

[0547] On the other hand, if the top surface of the electrode in the preceding process is inverted to the back surface of the electrode in the following process depending on the electrode winding direction in the rewinder RW in the preceding process and the electrode unwinding direction in the unwinder UW in the following process, the roll map matching unit 1200 can match the roll maps by reflecting such surface inversion.

[0548] As shown in FIG. 31, depending on the electrode winding and unwinding directions in the preceding and following steps, the top and bottom surfaces of the electrode may be reversed in the preceding and following steps.

[0549] In this case, information about the electrode surface inversion is stored in the roll map matching unit 1200. For example, the control unit 30 of each process controls the movement of the electrode and the winding and unwinding of the electrode, and therefore holds information about the winding and unwinding directions. The roll map matching unit 1200 can receive information about the surface inversion from the control unit and store it in the top and back surface matching unit 1230.

[0550] Based on the information, the top and bottom surface matching unit 1230 of the roll map matching unit 1200 matches the roll map for the top surface of the electrode in the preceding process with the roll map for the bottom surface of the electrode in the following process so that they correspond to each other.

[0551] 39 to 41 show examples in which an overlay roll map is created by such surface matching.

[0552] 39, the electrode is wound in the top winding direction by the rewinder RW in the coating process and unwound in the bottom unwinding direction in the roll press process. That is, the top surface of the electrode in the coating process is inverted to the back surface of the electrode in the roll press process. The top surface and back surface matching unit 1230 receives and records information about such top / back surface inversion from the control unit 30. For example, the control logic value can be set to 0 when no top / back surface inversion occurs between the preceding and succeeding processes, and 1 when top / back surface inversion occurs.

[0553] In addition, the electrode is wound in the bottom winding direction by the rewinder RW in the roll press process and unwound in the top unwinding direction by the unwinder UW in the notching process. In this case, the electrode surface is inverted again, and in this case, the top and bottom surface matching unit 1230 again assigns a control logic value of 1. However, since the roll map for the notching process is a single-plane roll map created regardless of the electrode surface, even if surface inversion occurs between the roll press process and the notching process, it does not pose a major problem if the inversion information is not reflected in the creation of the overlay roll map. Referring to Figure 39, it can be seen that start / end inversions also occurred between the coating process and the roll press process, and between the roll press process and the notching process.

[0554] 40 and 41 are examples of overlay roll maps in which roll map length matching and coordinate axis matching are performed, reflecting the electrode length changes and coordinate axis changes described above.

[0555] FIG. 40 is an overlay roll map when no surface inversion occurs between the coating step and the roll pressing step, and FIG. 41 is an overlay roll map when surface inversion occurs.

[0556] Referring to FIG. 40, since no surface inversion occurred, roll map I for the electrode upper surface T in the coating process corresponds to roll map III for the electrode upper surface T in the roll pressing process.

[0557] In this case, control logic 0 is assigned to the top and back surface matching unit 1230. That is, the roll map I of the electrode top surface, marked with T in the coating process, corresponds to the roll map III of the electrode top surface, marked with T in the roll press process. In this case, the overlay roll maps of the electrode top surface from the coating process to the notching process are composed of I, III, and V, allowing quality and product history to be confirmed between each process. Similarly, the overlay roll map of the electrode back surface B is composed of II, IV, and V.

[0558] Referring to FIG. 41, surface inversion occurs, and roll map I for the electrode top surface T in the coating process corresponds to roll map IV for the electrode back surface B in the roll press process. In this case, control logic 1 is provided to the top surface and back surface matching unit 1230. That is, roll map I for the electrode top surface, marked T in the coating process, corresponds to roll map IV for the electrode back surface, marked B in the roll press process. In this case, the overlay roll maps for the electrode top surface from the coating process to the notching process are composed of I, IV, and V, allowing quality and product history to be confirmed between each process. Similarly, the back surface of the electrode also reflects the above surface inversion information, and roll map II for the electrode back surface in the coating process corresponds to roll map III for the electrode top surface T in the roll press process. Therefore, the overlay roll map for the electrode back surface is composed of II, III, and V.

[0559] Thus, unless the top and bottom surface matching unit 1230 provides information about surface inversion and matches the presence or absence of surface inversion between roll maps, a problem occurs in that roll maps representing completely different actual electrode surfaces are compared between the coating process and the roll pressing process, which causes a loss of consistency in quality tracking using overlay roll maps, making it impossible to perform accurate quality tracking.

[0560] The roll map matching unit 1200 of the present invention can perform top and back surface matching in addition to the roll map length matching and coordinate axis matching described above. As a result, even if the top and back surfaces of the electrode are reversed during a series of roll-to-roll processes, an overlay roll map can be created by roll map matching using a predetermined logic, allowing any problems with the electrode quality to be tracked quickly and intuitively.

[0561] 42 and 43 are schematic diagrams showing a series of roll-to-roll processes and an overlay roll map in the processes according to another embodiment. This embodiment shows a case where the roll press process is performed twice.

[0562] 42, an inversion of the electrode surface occurred between the coating process and the first roll press process. However, because the electrode was wound in the bottom winding direction by the rewinder RW in the first roll press process and unwound in the bottom unwinding direction by the unwinder UW in the second roll press process, no inversion of the electrode surface occurred between the first and second roll press processes. Therefore, the top and back surface matching unit 1230 assigns a control logic value of 1 between the coating process and the first roll press process, and assigns a control logic value of 0 between the first roll press process and the second roll press process.

[0563] FIG. 43 shows an overlay roll map for the roll-to-roll process series of FIG.

[0564] The overlay roll map in FIG. 43 was subjected to roll map length matching and coordinate axis matching, reflecting the electrode length changes and coordinate axis changes that occurred between the coating process and the notching process.

[0565] In this case, roll map I of the electrode top surface, labeled T in the coating process, is inverted in the first roll press process and corresponds to roll map IV of the electrode back surface, labeled B. On the other hand, roll map IV of the electrode back surface, labeled B in the first roll press process, corresponds to roll map VI of the electrode back surface, labeled B, without surface inversion in the second roll press process. Therefore, the overlay roll maps of the electrode top surface T from the coating process to the notching process are composed of I, IV, VI, and VII, making it possible to check the quality and product history between each process.

[0566] On the other hand, the overlay roll map of the back surface B of the electrode also consists of II, III, V, and VII, reflecting the above-mentioned front surface inversion information, and the quality and product history can be confirmed between each process.

[0567] The role map matching unit 1200 may be the MES or a component of the MES. In this case, the role map creation unit 40 may constitute the MES together with the role map matching unit 1200. Alternatively, the role map matching unit 1200 may be an SPC or DW system, which is separate from or higher-level than the MES, or may be a component included therein. For example, the role map matching unit 1200 may be an SPC (Statistical Process Control) device / system. Here, SPC is a management device / system that efficiently manages a process using statistical methods to achieve the quality and productivity targets required for the process. Alternatively, the role map matching unit 1200 may be a data warehouse (DW) that converts data stored in a database into a common format and manages it. A data warehouse enables data-based decision-making and can integrate and analyze data from multiple sources.

[0568] Therefore, in order to match the survival electrodes of the notching process with the survival electrodes of each process, the roll map coordinate values ​​of each process created by the roll map creation unit 40 can be matched with the roll map coordinate values ​​of the final process through a matching operation that compares and aligns them.

[0569] The roll map length matching unit 1210, coordinate axis matching unit 1220, and top and back surface matching unit 1230 may be software capable of performing predetermined calculations and matching operations, or a computing system incorporating the software. For example, each matching unit may be a real-time system such as an embedded computer system (ECS), in which a microcomputer may be used as each matching unit. The roll map length matching unit 1210, coordinate axis matching unit 1220, and top and back surface matching unit 1230 may communicate with each other via wired or wireless communication. In FIG. 26, the matching units are shown separately for functional distinction. However, for efficient computing processing, one or more of the matching units may be integrated with each other. For example, since roll map length matching and coordinate axis matching are all related to coordinate value conversion, they may be integrated and operated in a single matching unit. Therefore, the specific configuration of the roll map matching unit is not limited to the example of FIG. 26.

[0570] The role map and overlay role map may be stored in a recording medium such as a memory. A plurality of such memories may be provided as necessary. The memory may be a volatile memory or a non-volatile memory. Alternatively, the recording medium may be a hard disk, a CD-ROM, a USB memory, an SSD (Solid State Drive), or the like. The listed recording media are merely examples and are not limited to these examples.

[0571] The roll maps, overlay roll maps and related data stored on the recording medium can be freely used during battery manufacturing, quality control, analysis and problem tracking.

[0572] FIG. 44 shows an example of a roll map in the electrode manufacturing process.

[0573] Electrodes are processed roll-to-roll through processes such as coating, roll pressing, and slitting. A roll map represents the progress of the electrode in the form of a bar, with the longitudinal dimensions of the electrode indicated by coordinates. Information about defects, quality, and electrode breakage that occur during the electrode manufacturing process is displayed along with the coordinates on the roll map, allowing users to visually grasp data about the quality and defects of the electrode manufacturing process at a glance. For example, as shown in FIG. 44, if a break occurs in electrode 1 during the first process and a worker connects it with a joint connecting member D, the electrode length decreases by the length of the breakage. The roll map can also replicate this situation and correct the coordinates on the roll map. Referring to FIG. 44, the roll map R fo...

Claims

1. a test and / or measurement instrument for testing and / or measuring the electrode moving between the unwinder and the rewinder to obtain test and / or measurement data; and a roll map creation unit that creates a roll map by displaying at least a portion of the inspection and / or measurement data on a plane that replicates the moving electrode.

2. The roll map creation device according to claim 1 , further comprising a position measuring device that acquires, as coordinate values, positions of the electrodes according to an amount of rotation of the unwinder and / or the rewinder.

3. 3. The roll map creation device according to claim 2, wherein the position measuring device is a rotary encoder that measures the electrode position from the amount of rotation of a motor that drives an unwinder or a rewinder.

4. The inspection and / or metrology data may include the following: 1) Data regarding at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on electrodes 4) Data on electrode appearance 5) Data on electrode disconnection section positions or electrode connection positions 6) Data regarding the location of the sample testing section 7) Data regarding electrode waste section location 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrodes 11) Data on electrode thickness after roll pressing 2. The role map generating device of claim 1, wherein the role map generating device is one of:

5. The test and / or measurement instrument includes: a reference point measuring device for measuring reference points marked at predetermined intervals on the electrode; a seam gauge for sensing a seam applied onto the electrode; a loading amount measuring device for measuring an electrode slurry loading amount; Dimension and width measuring instruments; An electrode appearance inspection device; 10. The roll mapping device of claim 1, which is at least one of an electrode thickness gauge.

6. The test and / or measurement instrument includes: A position measuring device is connected to the position measuring device to obtain coordinate values ​​of the electrode portion from which the inspection and / or measurement data is obtained; The roll map creation device according to claim 2 , further comprising: a controller configured to transmit the inspection and / or measurement data and the coordinate values ​​to the roll map creation unit.

7. a controller for controlling movement of the electrode between the unwinder and the rewinder; The control unit is The inspection and / or measurement data is matched with coordinate values ​​of the electrode portion from which the inspection and / or measurement data was obtained; 3. The roll map creation device according to claim 2, further comprising: transmitting the matched coordinate values ​​and the inspection and / or measurement data to the roll map creation unit.

8. The roll map creation device of claim 6 or 7, wherein the coordinate values ​​of the electrode portion from which the inspection and / or measurement data is acquired are values ​​that are calculated by adding an offset distance, which is the distance between the inspection and / or measurement device and the rewinder, to a coordinate value that corresponds to the amount of rotation of the rewinder at the time the inspection and / or measurement data is acquired.

9. The roll map creation device according to claim 2 , wherein the roll map creation unit displays the coordinate values ​​and at least a portion of the inspection and / or measurement data on the roll map.

10. 10. The roll map creation device according to claim 9, wherein the roll map creation section displays reference points marked at predetermined intervals on the electrodes at positions on the roll map corresponding to coordinate values ​​of the reference points.

11. The role map generating device according to claim 9 , wherein the role map generating unit is an MES or an SPC.

12. The role map creation unit 10. The roll map creation device of claim 9, further comprising a visualization device for defining a visualization area forming a plane of the roll map, displaying the coordinate values ​​on the defined area, and visualizing and showing the inspection and / or measurement data.

13. The role map creation unit 13. The role mapping apparatus of claim 12, further comprising a central processing unit for comparing said inspection and / or measurement data with normal data and causing data found to be abnormal to be visualized and shown by said visualization device.

14. a manual input device for manually inputting test and / or measurement data of the electrodes that have been manually tested and / or measured; The roll map creation device of claim 1, wherein the manual input device transmits manually inspected and / or measured inspection and / or measurement data directly to the roll map creation unit, or transmits the data to the roll map creation unit via a control unit that controls electrode movement between an unwinder and a rewinder.

15. The role map creating apparatus of claim 1 , further comprising a display unit connected to the role map creating unit for displaying the role map.

16. 3. The roll map creation device according to claim 2, wherein the coordinate values ​​acquired by the position measuring device are values ​​at positions of the electrodes in the longitudinal direction.

17. The roll map creating device according to claim 2 , wherein the roll map creating section displays the width direction positions of the electrodes on the roll map by coordinate values.

18. The roll map creation device according to claim 17 , wherein the coordinate values ​​relating to the width direction position are obtained by the inspection and / or measuring instrument.

19. The role map creation unit an absolute coordinate roll map showing the coordinate values ​​of the electrode removal area and the remaining surviving electrode area; 10. The roll map creating device according to claim 9, which creates at least one of relative coordinate roll maps displaying only the coordinate values ​​of the survival electrode parts.

20. The role map creation unit The roll map creation device according to claim 9 , which creates at least one of a roll map for an upper surface of the electrode and a roll map for a rear surface of the electrode.

21. Inspecting and / or measuring the electrode moved between the unwinder and the rewinder to obtain inspection and / or measurement data and to obtain coordinate values ​​of the position of the moved electrode; and displaying at least a portion of the inspection and / or measurement data and the coordinate values ​​on a plane that replicates the moving electrode to create a roll map.

22. The roll map creation method according to claim 21 , wherein the inspection and / or measurement data acquisition and coordinate value acquisition steps are preceded by an electrode roll information registration step of registering specifications of an electrode roll to be installed on an unwinder.

23. The roll map creating method according to claim 22 , wherein at least some information of the specifications of the electrode roll is displayed together in the roll map.

24. 22. The roll map creation method according to claim 21, wherein the inspection and / or measurement data is acquired automatically by a predetermined inspection and / or measurement instrument or manually by an operator.

25. 22. The roll map creating method according to claim 21, further comprising displaying reference points marked at predetermined intervals on the electrodes at positions on the roll map corresponding to the coordinate values ​​of the reference points.

26. 22. The method of claim 21, further comprising comparing the test and / or measurement data with normal data and displaying data found to be abnormal on the role map such that the data is visually distinct from other data.

27. The roll map creation method according to claim 21, wherein data regarding a current input status of input materials input to an electrode manufacturing process is displayed in parallel with the roll map.

28. detailed data relating to one or more of said inspection and / or metrology data; or The roll map creating method according to claim 21 , wherein process data relating to each detailed process in manufacturing an electrode is displayed in association with a specific coordinate value or specific data display portion of the roll map.

29. A roll map bar is included which is displayed in a bar shape by replicating the electrodes moving between the unwinder and the rewinder; A roll map in which at least a portion of the inspection and / or measurement data obtained by inspecting and / or measuring the moving electrode is displayed at a predetermined position on the roll map bar corresponding to the position of the electrode from which the data was obtained.

30. 30. The roll map of claim 29, wherein coordinate values ​​indicating the longitudinal positions of electrodes are displayed along the longitudinal direction of the roll map bar.

31. 30. The roll map of claim 29, wherein information regarding at least one of the electrode specifications, manufacturing process, and manufacturing equipment is displayed along with the roll map.

32. The inspection and / or metrology data may include the following: 1) Data regarding at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on electrodes 4) Data on electrode appearance 5) Data on electrode disconnection section positions or electrode connection positions 6) Data regarding the location of the sample testing section 7) Data regarding electrode waste section location 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrodes 11) Data on electrode thickness after roll pressing 30. The role map of claim 29, wherein the role map is one or more of:

33. A roll map bar is provided for each of the electrode lanes and / or for the upper and lower surfaces of the electrodes, 30. The roll map of claim 29, wherein at least a portion of the inspection and / or metrology data is displayed in each roll map bar.

34. 30. The roll map of claim 29, wherein data regarding a current input status of input materials input into an electrode manufacturing process is displayed in parallel with the roll map bar.

35. detailed data relating to one or more of said inspection and / or metrology data; or The roll map according to claim 30, wherein process data relating to each detailed process in manufacturing an electrode is displayed in association with a specific coordinate value or specific data display portion of the roll map bar.

36. The roll map of claim 35, wherein when a specific range of the roll map bar is designated, inspection and / or measurement data associated with the specific range or process data related to each detailed process in manufacturing an electrode appears.

37. 36. The roll map according to claim 35, wherein when a particular location on the roll map bar is designated, an appearance image relating to that location appears.

38. 30. The roll map of claim 29, which replicates reference points marked at predetermined intervals on the electrodes and displays the reference points at positions on the roll map bar that correspond to the coordinate values ​​of the reference points.

39. 39. The roll map of claim 38, wherein when a position of a reference point on a coated electrode changes as the electrode is roll pressed and stretched, a reference point replicating the changed reference point is displayed at a coordinate position on the roll map bar that corresponds to the changed position.

40. A computer-readable recording medium comprising the role map according to any one of claims 29 to 39.

41. an electrode which is transported between an unwinder and a rewinder and has a plurality of reference points marked at predetermined intervals between the start and end of the electrode; a reference point measuring device for measuring the reference point marked on the electrode; a position measuring device that derives coordinate values ​​of an electrode according to the amount of rotation of the unwinder or rewinder, and derives the coordinate values ​​of the reference point when the reference point measuring device measures the reference point in conjunction with the reference point measuring device; and a calculation unit that, when a reference point interval between a start portion and an end portion of an electrode fluctuates from a set reference point interval due to loss in a portion of the electrode, compares the derived reference point coordinate value with a set reference point coordinate value to calculate an amount of loss in the electrode.

42. marking a plurality of reference points at predetermined intervals between the beginning and end of the electrode being transferred between the unwinder and the rewinder; measuring a reference point on the electrode with a reference point measuring device to derive coordinate values ​​of the reference point; and when a reference point interval between a start portion and an end portion of an electrode fluctuates from a set reference point interval due to loss in a portion of the electrode, calculating an amount of loss in the electrode by comparing the derived reference point coordinate value with a set reference point coordinate value.

43. a reference point measuring device for inspecting an electrode moving between an unwinder and a rewinder and sensing a reference point marked on the electrode; a position measuring device that derives coordinate values ​​of the electrodes according to the amount of rotation of the unwinder or rewinder, and derives coordinate values ​​of the reference points; a roll map creation unit that creates a roll map bar that replicates the moving electrodes, and creates a roll map that indicates an amount of electrode loss calculated by comparing the derived coordinate value of the reference point with a set reference point coordinate value on the roll map bar.

44. a roll map creation unit that creates a roll map of the first process, the roll map being expressed in a planar shape that replicates an electrode that moves between the first unwinder and the first rewinder and undergoes the first process, and on which electrode inspection and / or measurement data in the first process and coordinate values ​​that indicate the positions of the electrodes are displayed; a roll map correction unit that converts the roll map coordinates of the first process in reverse order to generate a roll map for a second process so that, when the electrode moves between a second unwinder and a second rewinder to perform a second process, the coordinate values ​​of a start portion and an end portion of the roll map for the first process are reversed.

45. When a part of the electrode terminal end is removed after the first step is completed and before the second step is started, 45. The roll map correction system of claim 44, wherein the roll map correction unit removes coordinate values ​​corresponding to the removed portion of the electrode end from the roll map of the first process, and converts the roll map coordinate values ​​of the first process in a reverse order so that coordinate values ​​of the start portion of the first process roll map and the end portion where the portion of the electrode end has been removed are reversed, thereby generating a roll map of the second process.

46. A defect removal device for a second process of an electrode that moves between a first unwinder and a first rewinder and undergoes a first process, comprising: a defect removal port located between the second unwinder and the second rewinder, through which a defective section of the electrode generated in the first process is removed; a second process control unit that controls electrode movement between the second unwinder and the second rewinder; The second process control unit calculates the time when the electrode of the defective section will arrive at the defect removal port from the second unwinder based on coordinate information of the defective section displayed on the roll map of the first process, and stops the electrode movement of the second process when the defective section arrives at the defect removal port so as to remove the defective section of the electrode from the defect removal port.

47. A roll map correction unit converts and corrects the roll map coordinate values ​​in the first step in a reverse order so that the coordinates of the start and end parts of the roll map in the first step are reversed, The electrode defect removing device according to claim 46, wherein the second process control unit stops movement of the electrode based on coordinate values ​​of a defective section displayed on the corrected roll map.

48. When a part of the electrode terminal end is removed after the first step is completed and before the second step is started, the roll map correction unit removes coordinate values ​​corresponding to the removed part of the electrode end from the roll map of the first process, and converts and corrects the roll map coordinate values ​​of the first process in a reverse order so that coordinate values ​​of a start part of the roll map of the first process and an end part where the part of the electrode end is removed are reversed; 48. The electrode defect removing device according to claim 47, wherein the second process control unit stops movement of the electrode based on coordinate values ​​of a defective section displayed on the corrected roll map.

49. 47. The electrode defect removal device of claim 46, wherein the second process control unit controls the electrode of the second process to be moved slowly during a predetermined time period between a predetermined time point before the defective section arrives at the defect removal port and the arrival time.

50. 47. The electrode defect removal device of claim 46, further comprising an alarm unit that issues an alarm at least one of the following: when the defective section arrives at a defect removal port, when the electrode movement in the second step stops, and after a predetermined time has elapsed after the electrode movement in the second step stops.

51. 49. The electrode defect removal device according to claim 48, wherein the first step is an electrode coating step of applying an electrode active material to a current collector to form a coated electrode, and the second step is a roll press step of rolling the coated electrode with a press roll.

52. A roll map creation system for a series of roll-to-roll processes in which a process in which an electrode unwound from an unwinder is moved and wound by a rewinder is sequentially and repeatedly performed, a roll map creation device that creates a roll map for each process, the roll map being defined as a coordinate plane having two coordinate axes, the longitudinal axis and the width axis, of the electrode, and indicating the position of the electrode in each process by the coordinate values ​​of the coordinate plane; a roll map matching unit that matches coordinate values ​​of the roll map of each process with coordinate values ​​of the roll map of a final process so that an actual electrode represented by the roll map of a final process in a series of roll-to-roll processes matches an actual electrode represented by the roll map of each process before the final process.

53. The role map creation device includes: a position measuring device that obtains a longitudinal position of the electrode as a coordinate value corresponding to an amount of rotation of one of the unwinder and the rewinder in each process; a test and / or measurement instrument for testing the electrodes moving between the unwinder and the rewinder to obtain test and / or measurement data; A roll map creation system as described in claim 52, comprising a roll map creation unit that defines a visualization area forming a coordinate plane of the roll map and displays at least a portion of the inspection and / or measurement data and longitudinal coordinate values ​​of electrodes on the visualization area to create a roll map.

54. The inspection and / or metrology data includes: 1) Data regarding at least one of the electrode dimensions and width 2) Data on mismatch between coated and uncoated electrode parts 3) Slurry loading data on electrodes 4) Data on electrode appearance 5) Data on the location of electrode breaks or inter-electrode connections, or data on electrode seams 6) Data regarding the location of the sample testing section 7) Data regarding electrode waste section location 8) Data on insulation quality or defects in the insulating material coating process performed after electrode slurry coating 9) Other bad data 10) Data regarding reference points marked at predetermined intervals on the electrodes 11) Data on electrode thickness after roll pressing One or more of 54. The roll map creation system of claim 53, wherein coordinate values ​​of the electrode portion from which the inspection and / or measurement data was acquired are displayed on the roll map of each process together with the inspection and / or measurement data.

55. The roll map creation system of claim 53, wherein the longitudinal coordinate value of the electrode portion from which the inspection and / or measurement data is obtained is a value obtained by adding an offset distance, which is the distance between the inspection and / or measurement device and the rewinder, to the longitudinal coordinate value of the electrode corresponding to the amount of rotation of the rewinder at the time the inspection and / or measurement data is sensed.

56. 54. The roll mapping system of claim 53, wherein the width direction coordinate value of the electrode portion from which the inspection and / or measurement data is obtained is obtained by the inspection and / or measurement device.

57. a controller for controlling movement of the electrode between the unwinder and the rewinder; The roll map creation system of claim 53, wherein the control unit transmits the inspection and / or measurement data to the roll map creation unit by matching the inspection and / or measurement data with coordinate values ​​of the electrode portion from which the inspection and / or measurement data was obtained.

58. The role map creation device includes: An absolute coordinate roll map showing the coordinate values ​​of the electrode parts removed during and between each step and the coordinate values ​​of the surviving electrode parts excluding the removed electrode parts on the coordinate plane; The role map creation system according to claim 52, which creates a relative coordinate role map in which only the coordinate values ​​of surviving electrode portions excluding the removed electrode portions are shown on the coordinate plane.

59. The role map matching unit 59. The roll map creation system of claim 58, wherein coordinate values ​​of the relative coordinate roll map of each step before the final step are made to match coordinate values ​​of the relative coordinate roll map of the final step.

60. The role map creation device includes:

53. The roll map creation system of claim 52, which creates a roll map for an upper surface of the electrode and a roll map for a lower surface of the electrode.

61. When the final step is a notching step, The roll map creation system of claim 60, wherein the roll map creation device creates a single-plane roll map in which only coordinate values ​​are displayed on the coordinate plane, regardless of the upper and lower surfaces of the electrodes.

62. The role map matching unit From the roll map of each process, all coordinate sections corresponding to the actual electrode portions cumulatively removed in a series of roll-to-roll processes are removed; The roll map creation system of claim 52, wherein the roll map length of each process is made to match the roll map length of the final process by correcting the coordinate values ​​of the remaining coordinate intervals that remain after the removal so that they match the coordinate values ​​of the roll map of the final process.

63. When the start direction of the roll map coordinate of a specific process before the final process is reversed from the start direction of the roll map coordinate of the final process according to the electrode winding direction of the rewinder of the preceding process and the electrode unwinding direction of the unwinder of the following process, 63. The roll map creation system of claim 62, wherein the roll map matching unit matches a roll map coordinate start direction of the specific process with a roll map coordinate start direction of the final process.

64. When the upper surface of the electrode in the preceding process is inverted to the lower surface of the electrode in the following process according to the electrode winding direction in the rewinder in the preceding process and the electrode unwinding direction in the unwinder in the following process, The roll map matching unit stores information about the electrode surface inversion, 63. The roll map creation system of claim 62, wherein the roll map matching unit matches the roll map for the electrode upper surface in the preceding process with the roll map for the electrode rear surface in the following process so that they correspond to each other based on the information.

65. The role map matching unit 62. The roll map creation system according to claim 61, wherein the roll map of the final process and the roll maps of each process that match the roll map of the final process are arranged side by side and represented as an overlay roll map.

66. 62. The role map creation system of claim 61, further comprising a display unit on which the overlay role map is displayed.

67. An overlay roll map in which roll maps of a series of roll-to-roll processes in which a roll-to-roll process in which an electrode moves between an unwinder and a rewinder is sequentially and repeatedly performed are arranged side by side, Among the roll maps, the roll maps of each process before the final process are as follows: An overlay roll map, which is a roll map matched by roll map matching in which the coordinate values ​​of the roll map of each process are matched with the coordinate values ​​of the roll map of the final process so that the real electrodes represented by the roll map of the final process match with the real electrodes represented by the roll maps of each process before the final process.

68. 68. A computer readable medium comprising the overlay role map of claim 67.

69. a notching control unit that acquires electrode coordinate information of an electrode line transferred in a notching process and a cell ID of the unit electrode; a calculation unit that calculates pitch information, which is the width of a unit electrode to be notched, and a cell ID coordinate value, which is the position of a specific unit electrode to be moved in the notching process, from the cell ID; a roll map creation unit that creates a roll map, in which electrode positions are displayed as coordinate values ​​and which grasps changes in electrode length in an electrode manufacturing process before a notching process, from electrode coordinate information transmitted from the notching control unit; a mapping unit that compares the roll map coordinate values ​​with the cell ID coordinate values ​​to derive an electrode position in an electrode manufacturing process from which a specific unit electrode originates.

70. a plurality of tanks connected by piping between the mixer and the coater, through which the electrode slurry supplied from the mixer is sequentially transferred to the coater; a control unit that recognizes lot information of the electrode slurry, assigns and records lot information of the electrode slurry supplied to each tank for each tank, and detects electrode slurry lot information of a final supply tank that supplies the electrode slurry to the coater by referring to a history of the lot information recorded for each tank.

71. Recognizing and recording lot information of the electrode slurry supplied from the mixer; allocating and recording lot information of the electrode slurry supplied to each tank when the electrode slurry is transferred sequentially through the plurality of tanks; detecting lot information of the electrode slurry of a final supply tank that supplies the electrode slurry to the coater by referring to a history of lot information recorded for each tank.

72. a device controller configured to receive specification information for at least one electrode from a first sensor, receive the position coordinates of the at least one electrode from a second sensor, and generate identification information for each of the at least one electrode based on the specification information and the position coordinates; a testing device for testing the at least one electrode and generating testing information; a controller that matches and manages the identification information and the inspection information of the at least one electrode.

73. the equipment controller receives a quantity count value of the at least one electrode from the first sensor according to a length of the at least one electrode tab; 73. The battery manufacturing system of claim 72, wherein the electrode quantity count value includes a BCD code.

74. 74. The battery manufacturing system of claim 73, wherein the equipment control device receives roll map coordinates of the at least one electrode from an encoder installed in a rewinder included in a notching device that notches the at least one electrode.

75. 75. The battery manufacturing system of claim 74, wherein the equipment controller generates an ID for each of the at least one electrode based on the specification information and the roll map coordinates of at least one positive electrode tab.

76. 76. The battery manufacturing system of claim 75, wherein the inspection device receives the specification information of the at least one electrode from the first sensor and adds the specification information to the inspection information of the at least one electrode.

77. The battery manufacturing system of claim 76, wherein the controller manages the ID of the at least one electrode and inspection information of the at least one electrode in a consistent manner.

78. 80. The battery manufacturing system of claim 77, wherein the controller matches the ID of the at least one electrode and inspection information of the at least one electrode to generate integrated inspection information for the at least one electrode, and transmits the integrated inspection information to a server.

79. receiving at least one electrode specification from a first sensor; receiving the position coordinates of the at least one electrode from a second sensor; generating identification information for each of the at least one electrode based on the standard information and the position coordinates; testing the at least one electrode to generate test information; and managing the identification information and the inspection information of the at least one electrode in a consistent manner.

80. 80. The battery manufacturing method of claim 79, wherein receiving specification information of the at least one electrode from the first sensor includes receiving a quantity count value of the at least one electrode according to a length of the at least one electrode tab from the first sensor, and the quantity count value of the electrode includes a BCD code.

81. receiving the position coordinates of the at least one electrode from the second sensor, 81. The battery manufacturing method of claim 80, further comprising receiving roll map coordinates of the at least one electrode from an encoder mounted to a rewinder included in a notching device that notches the at least one electrode.

82. 82. The battery manufacturing method of claim 81 , wherein generating identification information for each of the at least one electrode based on the specification information and the position coordinates generates an ID for each of the at least one electrode based on the specification information and the roll map coordinates of at least one positive electrode tab.

83. 83. The battery manufacturing method of claim 82, wherein the step of inspecting the at least one electrode and generating inspection information comprises receiving specification information of the at least one electrode from the first sensor and adding the specification information to the inspection information of the at least one electrode.

84. 84. The method of manufacturing a battery of claim 83, wherein the step of managing the identification information and the inspection information of the at least one electrode in a consistent manner includes managing the ID of the at least one electrode and the inspection information of the at least one electrode in a consistent manner.

85. 85. The battery manufacturing method of claim 84, wherein the step of matching and managing the identification information and the inspection information of the at least one electrode includes matching the ID of the at least one electrode and the inspection information of the at least one electrode to generate integrated inspection information of the at least one electrode, and transmitting the integrated inspection information to a server.

86. generating a virtual ID corresponding to the battery cell; shifting the virtual ID according to a progress of a process on the battery cell; storing the shifted virtual ID and process data generated for the battery cell in correspondence with each other; extracting a cell ID for the battery cell; transmitting process data, which is matched with a virtual ID corresponding to the cell ID, to a host control system in accordance with the cell ID.

87. 87. The battery manufacturing method of claim 86, further comprising, after the step of generating the virtual ID, matching process step information indicative of a process being performed on the battery cell with the virtual ID.

88. The step of shifting the virtual ID includes:

90. The battery manufacturing method of claim 87, comprising changing process step information that matches the virtual ID if a process being performed on the battery cell is changed.

89. 87. The battery manufacturing method of claim 86, wherein the process data includes operation results and / or test results of a process on the battery cell.

90. The step of extracting a cell ID for the battery cell comprises:

87. The method of claim 86, comprising the step of reading a cell ID in the form of a bar code attached to the battery cell.

91. 87. The battery manufacturing method of claim 86, wherein the process data that matches the cell ID is process data collected in a time series manner for each process performed on the battery cell.

92. 87. The battery manufacturing method of claim 86, wherein the process for the battery cell includes an NDD process and / or a lamination process.

93. a virtual ID generation unit for generating a virtual ID corresponding to the battery cell; a virtual ID management unit that shifts the virtual ID according to a progress of a process for the battery cell; a process data collection unit that matches and stores the shifted virtual ID and process data generated for the battery cell; a main control unit that matches process data that matches a virtual ID corresponding to a cell ID extracted from the battery cell with the cell ID to generate process information.

94. 94. The battery manufacturing system of claim 93, wherein the virtual ID management unit matches process stage information indicating a process being performed on the battery cell with the virtual ID after the virtual ID is generated.

95. The virtual ID management unit 95. The battery manufacturing system of claim 94, wherein the process step information matched with the virtual ID is changed if the process being performed on the battery cell is changed.

96. 94. The battery manufacturing system of claim 93, wherein the process data includes process operation results and / or test results for the battery cells.

97. 94. The battery manufacturing system of claim 93, wherein the process data that matches the cell ID is process data collected in a chronological order for each process performed on the battery cell.

98. 94. The battery manufacturing system of claim 93, wherein the process for the battery cells includes an NDD process and / or a lamination process.

99. The battery manufacturing system of claim 93, further comprising a communication unit that transmits the process information to a higher level control system.

100. a first roll map creation unit that creates a first roll map for at least one process, the first roll map including coordinate value data indicating a position of an electrode and first data among process data that is generated in accordance with the progress of a process performed on the electrode and that coincides with the coordinate value data; a second roll map creation unit that creates a second roll map for at least one process, the second roll map including the coordinate value data and the first data of the first roll map and further including second data among the process data that is associated with the first data.

101. The process data includes: Equipment data acquired from each process equipment, process-related inspection and / or metrology data acquired at each process; 101. The battery manufacturing system of claim 100, including at least one of time series data acquired at each process.

102. 101. The battery manufacturing system of claim 100, wherein the first data and the second data correspond to the same coordinate value data.

103. The second data is the following data: 1) Data with a larger capacity than the first data 2) Processed data of the first data 3) Data of a different type than the first data 103. The battery manufacturing system of claim 102, comprising one of:

104. The battery manufacturing system of claim 100, further comprising a server unit configured to store the second data and transmit the second data to the second roll map creation unit.

105. The battery manufacturing system of claim 100, wherein at least one of data regarding the specifications of input materials for electrode manufacturing, process data regarding a mixing process of the input materials, and route data regarding a transport route for transporting the mixed input materials to an electrode coater is managed in accordance with coordinate value data of the first roll map and / or the second roll map and data corresponding to the coordinate value data.

106. 1) matching the coordinate values ​​of the first roll map of the preceding process with the coordinate values ​​of the first roll map of the following process so that the real electrodes represented by the first roll map of the preceding process correspond to the real electrodes represented by the first roll map of the following process; 2) matching the coordinate values ​​of the first roll map of each process with the coordinate values ​​of the first roll map of the final process so that the real electrodes represented by the first roll map of the final process among the plurality of processes correspond to the real electrodes represented by the first roll maps of each process preceding the final process; 101. The battery manufacturing system of claim 100, further comprising a roll map matching unit that performs at least one of the following:

107. 1) matching the coordinate values ​​of the second roll map of the preceding process with the coordinate values ​​of the second roll map of the following process so that the real electrodes represented by the second roll map of the preceding process correspond to the real electrodes represented by the second roll map of the following process; 2) matching the coordinate values ​​of the second roll map of each process with the coordinate values ​​of the second roll map of the final process so that the real electrodes represented by the second roll map of the final process among the plurality of processes correspond to the real electrodes represented by the second roll maps of each process preceding the final process; 101. The battery manufacturing system of claim 100, further comprising a roll map matching unit that performs at least one of the following:

108. creating a first roll map for at least one process, the first roll map including coordinate value data indicating a position of an electrode and first data among process data that coincides with the coordinate value data and is generated in accordance with the progress of a process performed on the electrode; storing second data associated with the first data among the process data; and creating a second roll map for at least one process, the second roll map including the second data in addition to the coordinate value data and the first data of the first roll map, by matching the second data with the coordinate value data.

109. a roll map creation unit that creates a roll map for each process, the roll map including coordinate value data indicating the position of an electrode and process data that is generated in accordance with the progress of a process performed on the electrode and coincides with the coordinate value data; 1) matching the coordinate values ​​of the roll map of the preceding process with the coordinate values ​​of the roll map of the following process so that the actual electrodes represented by the roll map of the preceding process correspond to the actual electrodes represented by the roll map of the following process; 2) matching the coordinate values ​​of the roll map of each process with the coordinate values ​​of the roll map of the final process so that the actual electrodes represented by the roll map of the final process among the multiple processes correspond to the actual electrodes represented by the roll maps of each process preceding the final process; and a roll map matching unit that performs at least one of the following:

110. The process data includes: Equipment data acquired from each process equipment, process-related inspection and / or metrology data acquired at each process; 110. The battery manufacturing system of claim 109, including at least one of time series data acquired at each process.

111. The role map creation unit An absolute coordinate roll map showing the coordinate values ​​of the electrode parts removed during each step, between steps, or after the final step, and the coordinate values ​​of the surviving electrode parts excluding the removed electrode parts on the roll map; The battery manufacturing system of claim 109, further comprising: creating at least one relative coordinate roll map that shows only the coordinate values ​​of surviving electrode portions excluding the removed electrode portions on the roll map.

112. The role map matching unit 1) matching the coordinate values ​​of the relative coordinate roll map of the preceding process with the coordinate values ​​of the relative coordinate roll map of the following process; 2) matching the coordinate values ​​of the relative coordinate roll map of each process before the final process among the plurality of processes with the coordinate values ​​of the relative coordinate roll map of the final process; 110. The battery manufacturing system of claim 109, further comprising:

113. The role map matching unit a) Roll map length matching for matching the roll map length of a preceding process with the roll map length of a following process; b) Coordinate axis matching for matching the start direction of the roll map coordinates of the preceding process with the start direction of the roll map coordinates of the following process; c) electrode surface matching for matching a roll map of an electrode surface of a subsequent process with a roll map of an electrode surface of a preceding process corresponding to the electrode surface of the subsequent process; 110. The battery manufacturing system of claim 109, further comprising:

114. The role map matching unit Role map of subsequent processes, 114. The battery manufacturing system of claim 113, wherein a roll map of a preceding process that matches the roll map of the succeeding process are arranged side by side and displayed as an overlay roll map.

115. The role map matching unit a)' Roll map length matching for matching the roll map length of each step with the roll map length of the final step; b)' Coordinate axis matching for matching the roll map coordinate start direction of each process with the roll map coordinate start direction of the final process; c)' electrode surface matching for matching a roll map for the electrode surface of the final process with roll maps for the electrode surfaces of each process corresponding to the electrode surface of the final process; 110. The battery manufacturing system of claim 109, further comprising:

116. The role map matching unit The role map for the final process, 116. The battery manufacturing system of claim 115, wherein the roll maps of each step that match the roll map of the final step are arranged side by side and represented as an overlay roll map.

117. The role map creation unit a first roll map creation unit that creates a first roll map including coordinate value data indicating a position of an electrode and first data among process data that is generated in accordance with progress of a process performed on the electrode and coincides with the coordinate value data, The role map matching unit The coordinate values ​​of the first roll map of the preceding process and the first roll map of the following process are made to match, or The battery manufacturing system of claim 109, wherein the coordinate values ​​of the first roll map of each process among the plurality of processes are matched with the coordinate values ​​of the first roll map of the final process.

118. The role map creation unit a second roll map creation unit that creates a second roll map including data of the first roll map, the second roll map including second data among the process data that is associated with the first data and matches the coordinate values; The role map matching unit The coordinate values ​​of the second roll map of the preceding process and the second roll map of the following process are made to match, or The battery manufacturing system of claim 117, wherein the coordinate values ​​of the second roll map of each process among the plurality of processes are matched with the coordinate values ​​of the second roll map of the final process.

119. The subsequent process data that matches the coordinate values ​​of the roll map of the subsequent process is managed by matching the preceding process data that matches the coordinate values ​​of the preceding process that match the coordinate values ​​of the roll map of the subsequent process, or A battery manufacturing system as described in claim 109, which manages final process data that matches the coordinate values ​​of the roll map of the final process and process data of each process that matches the coordinate values ​​of each process that match the coordinate values ​​of the roll map of the final process.

120. The battery manufacturing system of claim 114 or 116, wherein at least one of data regarding the specifications of input materials for electrode manufacturing, process data regarding a mixing process of the input materials, and route data regarding a transport path for transporting the mixed input materials to an electrode coater is managed in accordance with each matched coordinate value of the overlay roll map and the process data of each process that matches the coordinate values.

121. creating a roll map for each process, the roll map including coordinate value data indicating the position of an electrode and process data generated according to the progress of a plurality of processes performed on the electrode and coinciding with the coordinate value data; 1) matching the coordinate values ​​of the roll map of the preceding process with the coordinate values ​​of the roll map of the following process so that the actual electrodes represented by the roll map of the preceding process correspond to the actual electrodes represented by the roll map of the following process; 2) matching the coordinate values ​​of the roll map of each process with the coordinate values ​​of the roll map of the final process so that the actual electrodes represented by the roll map of the final process among the multiple processes correspond to the actual electrodes represented by the roll maps of each process preceding the final process; and performing at least one of matching among the above.

122. A computer-readable recording medium comprising the first role map and / or the second role map according to any one of claims 100 to 107.

123. 117. A computer readable storage medium comprising a role map and / or an overlay role map according to claim 114 or 116.

124. a coordinate value data server storing coordinate values ​​indicating a position of the electrode that moves during a process performed on the electrode; an identification marking device for applying identification marks to the electrodes at predetermined intervals; a data management server that matches and manages the coordinate values ​​of the coordinate value data server corresponding to the identification marker with the identification marker.

125. 125. The battery manufacturing system of claim 124, wherein the coordinate values ​​are roll map coordinate values ​​displayed on a roll map that represents electrodes moving between an unwinder and a rewinder.

126. The battery manufacturing system of claim 125, wherein the coordinate value data server stores the roll map coordinate values ​​of a preceding process and the roll map coordinate values ​​of a following process in a matched manner, or stores the roll map coordinate values ​​of each process among a plurality of processes in a matched manner with the roll map coordinate values ​​of a final process.

127. The battery manufacturing system of claim 125, wherein the coordinate value data server stores process data that corresponds to the roll map coordinate values.

128. The process data includes: Equipment data acquired from each process equipment, process-related inspection and / or metrology data acquired at each process; 127. The battery manufacturing system of claim 126, including at least one of time series data acquired at each process.

129. The coordinate value data server includes: a) a first roll map including coordinate value data indicating a position of an electrode and first data among process data generated in accordance with the progress of a process performed on the electrode and coinciding with the coordinate value data; b) a second role map including the coordinate value data of the first role map and the first data, and further including second data associated with the first data; c) an overlay roll map in which roll maps of preceding and succeeding processes having the same roll map coordinate values ​​are arranged side by side; d) an overlay roll map in which the roll maps of each process are arranged side by side, with the roll map coordinate values ​​of each process being matched with the roll map coordinate values ​​of the final process; 126. The battery manufacturing system of claim 125, wherein one or more of the following are stored.

130. The coordinate value data server includes: The battery manufacturing system of claim 125, wherein at least one of roll map coordinate values ​​indicating the position of the electrode moved in the process of applying the identification mark, roll map coordinate values ​​indicating the position of the electrode moved in one or more previous processes prior to the process of applying the identification mark, and process data of each process that matches the roll map coordinate values ​​is stored.

131. 126. The battery manufacturing system of claim 125, wherein the identification mark is applied to the electrode tab portion after a notching process that forms an electrode tab for the electrode.

132. The battery manufacturing system of claim 124, wherein the identification mark is an electrode ID that is actually marked on the electrode or a virtual electrode ID that is virtually assigned at a predetermined pitch to the electrode.

133. The battery manufacturing system of claim 132, wherein the identification marking device is an ID marking machine that marks an electrode ID on an electrode at a predetermined pitch.

134. The battery manufacturing system of claim 133, further comprising: acquiring a first position coordinate value corresponding to the electrode ID according to a coordinate value received by a position measurement sensor when marking the electrode ID or recognizing the marked ID.

135. The battery manufacturing system of claim 134, wherein the data management server manages the first position coordinate value corresponding to the electrode ID in correspondence with the corresponding coordinate value of the coordinate value data server and / or process data that matches the coordinate value.

136. The battery manufacturing system of claim 132, wherein the identification marking device is an equipment control device that receives specification information of at least one electrode from a first sensor, receives position coordinate values ​​of at least one electrode from a second sensor that is a position measurement sensor, and generates a virtual electrode ID for each of the at least one electrode based on the specification information and the position coordinate values.

137. the system controller receives a quantity count value of the at least one electrode from a first sensor according to a length of the at least one electrode tab; 137. The battery manufacturing system of claim 136, wherein the electrode quantity count value includes a BCD code.

138. The battery manufacturing system of claim 134, wherein the data management server manages position coordinate values ​​corresponding to the virtual electrode ID in correspondence with the corresponding coordinate values ​​of the coordinate value data server and / or process data that matches the coordinate values.

139. The data management server includes: The battery manufacturing system of claim 124, wherein subsequent process data for at least one process that is generated in accordance with the progress of a subsequent process on an electrode including the identification mark and that matches the identification mark is managed in accordance with the coordinate values ​​of the coordinate value data server and / or process data that matches the coordinate values.

140. 140. The battery manufacturing system of claim 139, comprising a subsequent process data matching unit that matches the identification mark with the at least one subsequent process data.

141. The battery manufacturing system of claim 140, wherein the subsequent process data matching unit assigns an upper identification mark that matches the electrode identification mark to an upper assembly including the electrode to which the identification mark is assigned.

142. 142. The battery manufacturing system of claim 141, wherein the upper assembly is at least one of an electrode assembly including an electrode having the identification mark, a battery cell semi-finished product including the electrode assembly, a battery cell including the electrode assembly, a battery cell stack including the battery cell or a battery module including the battery cell stack, or a battery pack including the battery cell stack or battery module.

143. The data management server includes: The battery manufacturing system of claim 124, wherein at least one of data regarding the specifications of input materials for electrode manufacturing, process data regarding a mixing process of the input materials, and route data regarding a transport route for transporting the mixed input materials to an electrode coater is managed in accordance with the identification mark and coordinate values ​​of the coordinate value data server.

144. acquiring coordinate value data indicative of a position of an electrode moving during the process; providing identification marks at predetermined intervals on the electrodes; and matching and managing the coordinate values ​​corresponding to the identification mark with the identification mark.

145. Based on the coordinate values ​​and the identification mark, The battery manufacturing method of claim 144, further comprising matching and managing process data corresponding to the coordinate values ​​and subsequent process data corresponding to the identification marks.

146. An electrode comprising an electrode identification marker according to any one of claims 124 to 143.

147. An upper assembly comprising the electrode of claim 146.

148. The upper assembly of claim 147, wherein the upper assembly is at least one of an electrode assembly including an electrode having the electrode identification mark, a battery cell semi-finished product including the electrode assembly, a battery cell including the electrode assembly, a battery cell stack including the battery cell or a battery module including the battery cell stack, or a battery pack including the battery cell stack or battery module.

149. 148. The superior assembly of claim 147, further comprising a superior identification marking that matches the electrode identification marking.

150. An electrode including an electrode identification indicia that matches at least one of roll map coordinates indicating a location of the electrode and process data that matches the roll map coordinates.

151. 151. The electrode of claim 150, wherein the electrode identification mark is matched with subsequent process data, thereby matching the subsequent process data with process data that matches roll map coordinate values ​​based on the electrode identification mark and roll map coordinate values.

152. 152. An upper assembly comprising an electrode according to claim 150 or 151.

153. The upper assembly of claim 152, wherein the upper assembly is at least one of an electrode assembly including an electrode having the electrode identification mark attached thereto, a battery cell semi-finished product including the electrode assembly, a battery cell including the electrode assembly, a battery cell stack including the battery cell or a battery module including the battery cell stack, or a battery pack including the battery cell stack or battery module.

154. 153. The superior assembly of claim 152, wherein the superior assembly further comprises superior identification markings matching with the electrode identification markings.

155. A non-transitory computer-readable recording medium including a program for executing a role map creation method, The role map creation method includes: Inspecting and / or measuring the electrode moved between the unwinder and the rewinder to obtain inspection and / or measurement data and to obtain coordinate values ​​of the position of the moved electrode; and displaying at least a portion of the inspection and / or measurement data and the coordinate values ​​on a plane that replicates the moving electrode to create a roll map.

156. A non-transitory computer-readable recording medium including a program for executing an electrode loss amount measuring method, The electrode loss amount measuring method includes: marking a plurality of reference points at predetermined intervals between the beginning and end of the electrode being transferred between the unwinder and the rewinder; measuring a reference point on the electrode with a reference point measuring device to derive coordinate values ​​of the reference point; and when a reference point interval between a start portion and an end portion of an electrode fluctuates from a set reference point interval due to loss of a portion of the electrode, calculating an amount of loss of the electrode by comparing the derived reference point coordinate value with a set reference point coordinate value.

157. A non-transitory computer-readable recording medium including a program for executing a battery manufacturing method, The battery manufacturing method includes: Recognizing and recording lot information of the electrode slurry supplied from the mixer; allocating and recording lot information of the electrode slurry supplied to each tank when the electrode slurry is transferred sequentially through the plurality of tanks; and detecting lot information of the electrode slurry of a final supply tank that supplies the electrode slurry to the coater by referring to a history of lot information recorded for each tank.

158. A non-transitory computer-readable recording medium including a program for executing a battery manufacturing method, The battery manufacturing method includes: receiving at least one electrode specification from a first sensor; receiving the position coordinates of the at least one electrode from a second sensor; generating identification information for each of the at least one electrode based on the standard information and the position coordinates; testing the at least one electrode to generate test information; and managing the identification information and the test information of the at least one electrode in a consistent manner.

159. A non-transitory computer-readable recording medium including a program for executing a battery manufacturing method, The battery manufacturing method includes: generating a virtual ID corresponding to the battery cell; shifting the virtual ID according to a progress of a process on the battery cell; storing the shifted virtual ID and process data generated for the battery cell in correspondence with each other; extracting a cell ID for the battery cell; and transmitting process data matched with a virtual ID corresponding to the cell ID to a higher level control system by matching the process data with the cell ID.

160. A non-transitory computer-readable recording medium including a program for executing a battery manufacturing method, The battery manufacturing method includes: creating a first roll map for at least one process, the first roll map including coordinate value data indicating a position of an electrode and first data among process data that is matched with the coordinate value data and is generated according to progress of a process performed on the electrode; storing second data associated with the first data among the process data; and creating, for at least one process, a second roll map including the second data in addition to the coordinate value data and the first data of the first roll map by matching the second data with the coordinate value data.

161. A non-transitory computer-readable recording medium including a program for executing a battery manufacturing method, The battery manufacturing method includes: acquiring coordinate value data indicative of a position of an electrode moving during the process; providing identification marks at predetermined intervals on the electrodes; and managing the identification mark by matching the coordinate values ​​corresponding to the identification mark.

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