Battery manufacturing system and battery manufacturing method

Abstract

Provided are a battery manufacturing system and a battery manufacturing method. One system may comprise: a first cutter configured to cut a first electrode sheet into a first electrode portion having a first length; a second cutter configured to cut a second electrode sheet into a second electrode portion having a second length; a winder configured to wind the first electrode portion, the second electrode portion, and a separator to form an electrode assembly; and an identification information assigning device configured to assign identification information to the electrode assembly on the basis of a cut count value of the first electrode sheet and / or a cut count value of the second electrode sheet, and / or a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

Description

Battery manufacturing system and battery manufacturing method

[0001] The present invention relates to a battery manufacturing system and a battery manufacturing method.

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0016070, filed on February 1, 2024, U.S. Patent Application No. 18 / 606780, filed on March 15, 2024, and Korean Patent Application No. 10-2025-0005048, filed on January 13, 2025, all of which are incorporated herein by reference.

[0003] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. They are widely used as a power source for various wireless devices, including handsets, laptops, and cordless vacuum cleaners. Recently, improved energy density and economies of scale have dramatically reduced the per-unit manufacturing cost of secondary batteries. Furthermore, as the range of battery electric vehicles (BEVs) has increased to match that of fuel-powered vehicles, the primary use of secondary batteries is shifting from mobile devices to mobility.

[0004] Secondary batteries are manufactured through electrode processes, assembly processes, and activation processes. Among these, the electrode process is the most critical process in determining the yield and performance of the battery cell. The electrode process may include a coating process, a roll-pressing process, and a slitting process. In the coating process, active and insulating materials may be applied to the surface of the current collector. In the roll-pressing process, the electrode may be pressed by pressure rolls. The roll-pressing process may determine the density, performance, and surface quality of the electrode. In the slitting process, the electrode may be cut into multiple electrodes depending on the battery cell design.

[0005] (Patent Document 1) Korean Patent Publication No. 10-2022-0134303

[0006] The present invention provides a battery manufacturing method and a battery manufacturing system with improved quality traceability and data consistency in a battery manufacturing process using a pattern electrode.

[0007] An exemplary battery manufacturing system of the present invention for solving the above problem is:

[0008] A first cutter configured to cut a first electrode sheet into a first electrode portion having a first length;

[0009] A second cutter configured to cut the second electrode sheet into a second electrode portion having a second length;

[0010] A winder configured to form an electrode assembly by winding the first electrode portion, the second electrode portion, and the separator between the first electrode portion and the second electrode portion; and

[0011] The electrode assembly may include an identification information assigning device configured to assign identification information to the electrode assembly based on a cut count value of the first electrode sheet and / or a cut count value of the second electrode sheet, and / or a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

[0012] In one aspect, the system may include one or more of the following features: the system controls a first cutter to cut the first electrode sheet into a first electrode portion by a first length;

[0013] The process controller may further include a second cutter configured to cut the second electrode sheet into a second electrode portion of a second length.

[0014] The above process controller can be configured to:

[0015] Determining whether at least one of the first electrode portion or the second electrode portion includes a defective portion; and

[0016] When it is determined that at least one of the first electrode portion or the second electrode portion includes a defective portion, the defective portion is cut, the defective portion is wound with a separator to form a defective electrode assembly, and the defective electrode assembly is discharged.

[0017] The system comprises a first pattern counter configured to count one or more patterns on the first electrode sheet moving between the first electrode roll and the winder and to assign the first pattern indicator to one or more patterns on the first electrode sheet;

[0018] The apparatus may further include a second pattern counter configured to count one or more patterns on the second electrode sheet moving between the second electrode roll and the winder and to assign the second pattern indicator to one or more patterns on the second electrode sheet.

[0019] The system comprises a first position measuring device configured to acquire first coordinate data indicating one or more positions of a first electrode sheet moving between a first electrode roll and a winder;

[0020] It may further include a second position measuring device configured to acquire second coordinate data indicating one or more positions of the second electrode sheet moving between the second electrode roll and the winder.

[0021] The system comprises a process controller configured to perform one or more processes between a first electrode roll including a first electrode sheet and a winder and between a second electrode roll including a second electrode sheet and a winder;

[0022] An identification information management server configured to execute data communications; or

[0023] It may include a combination of a process controller and an identification information management server.

[0024] At least one first electrode measuring device and / or inspector is provided between the first electrode roll and the winder,

[0025] At least one second electrode measuring device and / or inspector may be provided between the second electrode roll and the winder.

[0026] The system may further include a monitoring server configured to generate a first electrode roll map and a second electrode roll map. The first electrode roll map may include first position data of a first electrode sheet moving from the first electrode roll to the winder, and first process event data acquired according to the movement of the first electrode sheet and associated with the first position data. The second electrode roll map may include second position data of a second electrode sheet moving from the second electrode roll to the winder, and second process event data acquired according to the movement of the second electrode sheet and associated with the second position data.

[0027] The above monitoring server can generate monitoring data by associating the identification information of the electrode assembly with one or more of the following.

[0028] 1) A first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet

[0029] 2) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet

[0030] 3) At least one of the start coordinate value and the end coordinate value of the first length, and the start coordinate value and the end coordinate value of the second length.

[0031] 4) Data regarding defects in the first electrode sheet and / or second electrode sheet or defects in the electrode assembly.

[0032] 5) First process event data associated with the first location data and / or second process event data associated with the second location data.

[0033] 6) Tray identification information of the tray on which the above electrode assembly is loaded

[0034] 7) Data regarding the loading position of the electrode assembly on the tray.

[0035] 8) Can identification information of the electrode can in which the above electrode assembly is accommodated

[0036] As an example, a method for manufacturing a battery is provided. The method comprises:

[0037] A step of cutting a first electrode sheet into a first electrode portion having a first length;

[0038] A step of cutting a second electrode sheet into a second electrode portion having a second length;

[0039] A step of forming an electrode assembly by winding the first electrode portion, the second electrode portion, and the separator between the first electrode portion and the second electrode portion; and

[0040] The method may include a step of assigning identification information to the electrode assembly based on a cut count value of the first electrode sheet and / or a cut count value of the second electrode sheet, and / or a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

[0041] In another aspect, the manufacturing method may include one or more of the following features or steps. The first electrode portion may include a first electrode coating portion belonging to a first pattern, and the second electrode portion may include a second electrode coating portion belonging to a second pattern and corresponding to the first electrode coating portion. The first electrode portion may include a first electrode coating portion belonging to the first pattern. The second electrode portion may include a plurality of electrode coating portions, each of the electrode coating portions belonging to a different pattern. The second electrode portion may include an electrode uncoated portion between two electrode coating portions. The separator may have a third length, and the third length may be greater than the first length and the second length. The first pattern indicator may indicate a position of the first electrode sheet moving between the first electrode roll and the winder,

[0042] The second pattern indicator may indicate the position of the second electrode sheet moving between the second electrode roll and the winder. The method further includes a step of acquiring first coordinate data indicating the position of the first electrode sheet moving between the first electrode roll and the winder, and second coordinate data indicating the position of the second electrode sheet moving between the second electrode roll and the winder.

[0043] The above first and / or second coordinate data may be associated with at least one of the following:

[0044] ⅰ) Identification information of the above electrode assembly;

[0045] ⅱ) the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet; or

[0046] ⅲ) The first pattern indicator and / or the second pattern indicator

[0047] The first coordinate data includes at least one of the start coordinate value and the end coordinate value of the first length,

[0048] The second coordinate data may include at least one of a start coordinate value and an end coordinate value of the second length.

[0049] The identification information of the above electrode assembly may be associated with one or more of the following:

[0050] 1) A first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet

[0051] 2) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet

[0052] 3) At least one of the start coordinate value and the end coordinate value of the first length, and the start coordinate value and the end coordinate value of the second length.

[0053] 4) Data on defects in the first electrode sheet and second electrode sheet or defects in the electrode assembly.

[0054] 5) First process event data associated with the first location data and second process event data associated with the second location data

[0055] 6) Tray identification information of the tray on which the above electrode assembly is loaded

[0056] 7) Data regarding the loading position of the electrode assembly on the tray.

[0057] 8) Can identification information of the electrode can in which the above electrode assembly is accommodated

[0058] The method comprises the steps of: determining whether at least one of the first electrode portion or the second electrode portion includes a defective portion; and

[0059] If it is determined that at least one of the first electrode portion or the second electrode portion includes a defective portion, the method may further include the steps of cutting the defective portion, winding the defective portion with a separator to form a defective electrode assembly, and discharging the defective electrode assembly.

[0060] As an example, one or more non-transitory computer-readable media may be provided containing instructions for manufacturing a battery, which may be executed by a processor. The instructions may include:

[0061] A step of cutting a first electrode sheet into a first electrode portion having a first length;

[0062] A step of cutting a second electrode sheet into a second electrode portion having a second length;

[0063] A step of forming an electrode assembly by winding the first electrode portion, the second electrode portion, and the separator between the first electrode portion and the second electrode portion; and

[0064] Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet

[0065] and / or

[0066] A step of assigning identification information to the electrode assembly based on a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

[0067] In another aspect, the medium may include one or more of the following features or steps: the first electrode portion includes a first electrode coating portion belonging to a first pattern;

[0068] The second electrode portion may include a second electrode coating portion belonging to the second pattern and corresponding to the first electrode coating portion.

[0069] As an example, a battery may be provided. The battery may include:

[0070] housing;

[0071] A first electrode including a first indicator corresponding to a first pattern of a first electrode sheet;

[0072] A second electrode including a second indicator corresponding to a second pattern of a second electrode sheet; and

[0073] A separator between the first electrode and the second electrode may be included.

[0074] The first electrode, the second electrode, and the separator form an electrode assembly, and the electrode assembly can be accommodated in the housing.

[0075] The electrode assembly may include a third indicator including identification information of the electrode assembly. The housing may include a fourth indicator corresponding to the third indicator.

[0076] In another aspect, the first indicator may be marked on the surface of the first electrode. The first pattern includes a coated portion and an uncoated portion of the first electrode sheet,

[0077] The first electrode may include at least a portion of the coating portion of the first electrode sheet. The fourth indicator may correspond to identification information of the housing. The second pattern may include the coating portion of the second electrode sheet. The separator may include a fifth indicator, and the fifth indicator may be marked on a surface of the separator.

[0078] As an exemplary embodiment, a battery manufacturing system includes a first cutter for cutting a first electrode sheet having a pattern in which a coated portion and an uncoated portion are repeatedly arranged after the first electrode sheet is unwound from a first electrode roll to a first winding length;

[0079] A second cutter for cutting the second electrode sheet to a second winding length after the second electrode sheet having a pattern in which a coated portion and an uncoated portion are repeatedly arranged is unwound from the second electrode roll;

[0080] A winder for manufacturing an electrode assembly by winding together a first electrode sheet of the first winding length and a second electrode sheet of the second winding length with a separator interposed therebetween; and

[0081] It may include an identification information assigning device that assigns identification information to the electrode assembly based on the following i) and ii).

[0082] ⅰ) Cut count value of the first electrode sheet and cut count value of the second electrode sheet

[0083] ⅱ) A first pattern number of a first electrode sheet corresponding to the first winding length and a second pattern number of a second electrode sheet corresponding to the second winding length.

[0084] The system may further include a process controller that controls a first cutter to cut the first electrode sheet to a set first winding length and controls a second cutter to cut the second electrode sheet to a set second winding length.

[0085] When one of the first electrode sheet of the first winding length and the second electrode sheet of the second winding length has a defect, only the defective electrode sheet is cut, and the cut defective electrode sheet is wound together with the separator to be discharged as a defective electrode assembly.

[0086] The above process controller can control the first cutter, the second cutter, and the winder.

[0087] The system may further include a first pattern counter that counts patterns on the first electrode sheet moving between the first electrode roll and the winder and assigns the first pattern number, and a second pattern counter that counts patterns on the second electrode sheet moving between the second electrode roll and the winder and assigns the second pattern number.

[0088] The system may further include a first position measuring device that acquires first coordinate data capable of continuously indicating a position on a first electrode sheet moving between the first electrode roll and the winder, and a second position measuring device that acquires second coordinate data capable of continuously indicating a position on a second electrode sheet moving between the second electrode roll and the winder.

[0089] The above identification information granting device is,

[0090] A process controller that controls each process equipment from the first and second electrode rolls to the winder, or

[0091] An identification information management server that is connected to the above process controller for data communication, or

[0092] It may be a combination of the above process controller and identification information management server.

[0093] At least one first electrode measuring device and / or inspector may be provided between the first electrode roll and the winder, and at least one second electrode measuring device and / or inspector may be provided between the second electrode roll and the winder.

[0094] The system comprises a first electrode roll map, which is a simulated electrode including first positional data of a first electrode sheet moving from the first electrode roll to the winder, and first process event data acquired according to the movement of the first electrode sheet and associated with the first positional data;

[0095] The method may further include a monitoring server that generates a second electrode roll map including second position data of a second electrode sheet moving from a second electrode roll to the winder and second process event data acquired according to the movement of the second electrode sheet and associated with the second position data.

[0096] The above monitoring server can generate monitoring data for battery manufacturing by associating the identification information of the electrode assembly with one or more of the following.

[0097] 1) First pattern number of the first electrode sheet and second pattern number of the second electrode sheet

[0098] 2) Lot identification information of the first electrode sheet and lot identification information of the second electrode sheet

[0099] 3) Cut count value of the first electrode sheet and cut count value of the second electrode sheet

[0100] 4) At least one of the start coordinate value and the end coordinate value of the first winding length, and the start coordinate value and the end coordinate value of the second winding length.

[0101] 5) Data on defects in the first electrode sheet and second electrode sheet or defects in the electrode assembly

[0102] 6) First process event data associated with the first location data and second process event data associated with the second location data

[0103] 7) Tray identification information of the tray on which the above electrode assembly is loaded

[0104] 8) Data regarding the loading position of the electrode assembly on the tray.

[0105] 9) Can identification information of the electrode can in which the above electrode assembly is accommodated.

[0106] As another aspect of the present invention, a method for manufacturing a battery comprises:

[0107] A first step of unwinding a first electrode sheet having a pattern in which coated portions and non-coated portions are repeatedly arranged from a first electrode roll and then cutting it to a first winding length, and unwinding a second electrode sheet having a pattern in which coated portions and non-coated portions are repeatedly arranged from a second electrode roll and then cutting it to a second winding length;

[0108] A second step of manufacturing an electrode assembly by winding together a first electrode sheet of the first winding length and a second electrode sheet of the second winding length with a separator interposed therebetween; and

[0109] A third step of assigning identification information to the electrode assembly may be included based on the following i) and ii).

[0110] ⅰ) Cut count value of the first electrode sheet and cut count value of the second electrode sheet

[0111] ⅱ) A first pattern number of a first electrode sheet corresponding to the first winding length and a second pattern number of a second electrode sheet corresponding to the second winding length.

[0112] The first electrode sheet of the first winding length may include a first electrode coating portion belonging to pattern 1, and the second electrode sheet of the second winding length may include a second electrode coating portion belonging to pattern 1 and corresponding to the first electrode coating portion.

[0113] The first electrode sheet of the first winding length may include a first electrode coating portion belonging to one pattern, and the second electrode sheet of the second winding length may include two second electrode coating portions each belonging to an adjacent pattern and an uncoated portion located between the two second electrode coating portions.

[0114] The first electrode sheet of the first winding length and the second electrode sheet of the second winding length can be wound together with a separator of the third winding length to manufacture the electrode assembly.

[0115] The above first pattern number intermittently indicates a position on the first electrode sheet moving between the first electrode roll and the winder performing the winding,

[0116] The second pattern number may intermittently indicate a position on a second electrode sheet moving between the second electrode roll and the winder.

[0117] The above manufacturing method further includes a step of acquiring first coordinate data capable of continuously indicating a position on a first electrode sheet moving between the first electrode roll and the winder, and second coordinate data capable of continuously indicating a position on a second electrode sheet moving between the second electrode roll and the winder.

[0118] The above first and second coordinate data may be associated with at least one of the following.

[0119] ⅰ) Identification information of the above electrode assembly

[0120] ⅱ) Cut count value of the first electrode sheet and cut count value of the second electrode sheet

[0121] ⅲ) The first pattern number and the second pattern number

[0122] The first coordinate data includes at least one of the start coordinate value and the end coordinate value of the first winding length,

[0123] The second coordinate data may include at least one of a start coordinate value and an end coordinate value of the second winding length.

[0124] The identification information of the above electrode assembly may be associated with one or more of the following:

[0125] 1) First pattern number of the first electrode sheet and second pattern number of the second electrode sheet

[0126] 2) Lot identification information of the first electrode sheet and lot identification information of the second electrode sheet

[0127] 3) Cut count value of the first electrode sheet and cut count value of the second electrode sheet

[0128] 4) At least one of the start coordinate value and the end coordinate value of the first winding length, and the start coordinate value and the end coordinate value of the second winding length.

[0129] 5) Data on defects in the first electrode sheet and second electrode sheet or defects in the electrode assembly

[0130] 6) First process event data associated with the first location data and second process event data associated with the second location data

[0131] 7) Tray identification information of the tray on which the above electrode assembly is loaded

[0132] 8) Data regarding the loading position of the electrode assembly on the tray.

[0133] 9) Can identification information of the electrode can in which the above electrode assembly is accommodated.

[0134] When one of the first electrode sheet of the first winding length and the second electrode sheet of the second winding length has a defect, only the defective electrode sheet is cut, and the cut defective electrode sheet is wound together with the separator to be discharged as a defective electrode assembly.

[0135] The identification information of the defective electrode assembly can be provided based on the cut count value of the defective electrode sheet and the pattern indicator of the defective electrode sheet.

[0136] According to the present invention, an electrode assembly manufactured in a winding process can be assigned identification information (ID). This prevents the occurrence of a gray zone between the winding process and subsequent processes, where the electrode assembly cannot be tracked.

[0137] In particular, the identification information can be associated with positional data (pattern indicator data, pattern number data, coordinate data) reflecting the pattern location of the patterned electrode. This facilitates quality tracking of electrodes processed in the winding process and the electrode process prior to the winding process.

[0138] According to an exemplary embodiment of the present invention, identification information for an electrode assembly, for example, included in a cylindrical or prismatic battery, can be acquired and matched to the identification information of workpieces (e.g., electrodes), semi-finished products, or finished products before and after the winding process. This facilitates quality control and quality tracking throughout the entire battery manufacturing process.

[0139] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0140] Figure 1 illustrates a battery manufacturing system according to exemplary embodiments.

[0141] Figure 2 shows a visualized roll map and pattern electrodes.

[0142] Figure 3 illustrates a battery manufacturing system according to exemplary embodiments.

[0143] Figure 4 is a schematic diagram showing an example in which an electrode and a separator are wound by a winder to a predetermined length.

[0144] Figure 5 is a schematic diagram showing another example in which an electrode and a separator are wound by a winder.

[0145] Figure 6 illustrates that identification information of an electrode assembly is associated with other information.

[0146] Figure 7 is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment.

[0147] Figure 8 is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment.

[0148] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0149] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0150] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0151] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0152]

[0153] Fig. 1 shows a battery manufacturing system (10) according to an exemplary embodiment.

[0154] Referring to FIG. 1, the battery manufacturing system (10) may include a coating device (11), a roll pressing device (12), a slitting device (13), a winding device (14), an event integration facility (EIF) (181), a monitoring server (180), and a display device (190).

[0155] The battery manufacturing system (10) may be configured to manufacture battery cells (e.g., cylindrical battery cells, square battery cells, or pouch cells) by performing a series of roll-to-roll processes. An electrode sheet unwound from an input electrode roll may be processed by any one of a die coater of a coating device (11), pressure rolls of a roll pressing device (12), and a slitting knife of a slitting device (13), and the processed electrode sheet may be wound onto an electrode roll. Accordingly, the processing of the coating device (11), the roll pressing device (12), and the slitting device (13) for producing battery electrodes may be referred to as a roll-to-roll process. The winding device (14) can wind together a first electrode sheet (e.g., a cathode sheet) unwound from a first electrode roll (e.g., a cathode roll), a second electrode sheet (e.g., anode sheet) unwound from a second electrode roll (e.g., anode roll), and separator sheets unwound from separator rolls.

[0156] A winding device (14) can provide an electrode assembly (e.g., a jelly roll type electrode assembly) of a cylindrical battery cell by winding a positive electrode sheet, a negative electrode sheet, and separators interposed therebetween, and separating them after reaching a winding target length.

[0157] An intermediary server (EIF) (181) may be a device for communication between process controllers of a manufacturing facility and a server system. The server (180) may be coupled to the server system. For example, each process controller and the server system may be coupled to each other and may communicate directly or indirectly with each other. Accordingly, process event data generated from the coating device (11), the roll pressing device (12), the slitting device (13), and the winding device (14) may be transmitted to the monitoring server (180) and / or the server system.

[0158] The monitoring server (180) can generate monitoring data for battery manufacturing. For example, the monitoring data can include a roll map containing process event data. The roll map data can include data indicating a process event and coordinate values ​​matched with the data. The coordinate values ​​can indicate a location on an electrode. The monitoring server (180) can transmit a visualization command to the display device (190), and the display device (190) can visualize the roll map and display a visualized roll map (VRM).

[0159] Roll maps can be generated on a lot basis. A lot is a production unit of a roll-to-roll process. An electrode roll separated after achieving the target winding length of each process is an example of a lot. Similarly, an electrode roll loaded into an unwinder of each process is also an example of a lot. The monitoring server (180) can generate and store roll maps for each process (e.g., a coating process, a roll pressing process, or a slitting process).

[0160] The roll map may be a type of simulated electrode that simulates a moving real electrode (e.g., a real electrode moving between an unwinder and a rewinder). As an example, the roll map may be displayed on a display device including a two-dimensional graphical interface or a three-dimensional graphical interface. For example, the roll map may be displayed on one or more mobile or stationary display devices (e.g., a computer monitor, a laptop screen, a touchscreen, a tablet, a mobile phone, etc.). Additionally or alternatively, the display device may include a wearable display device (e.g., a head-mounted display) for displaying the roll map as virtual reality or augmented reality content on the graphical interface.

[0161] Since process events typically occur as the process progresses, process event data related to process events may include time-series data. For example, the process controller for each process can control the overall flow of each process (or stage). Therefore, events occurring along the timeline of the process, or the time points at which data occurs, can be acquired. In other words, process event data may include values ​​representing the event and time values ​​corresponding to the values. Accordingly, process event data may include time-series data acquired from each process.

[0162] Additionally, process event data may include equipment data acquired from each process facility. The equipment data may be acquired from each process controller that controls each process. The process controller is a control device used for maintenance, management, automatic control, and monitoring of the process system in each process, such as each sub-process of the electrode process (e.g., coating process, roll pressing process, slitting process), assembly process (e.g., electrode stacking process or winding process), activation process, module / pack process, etc. For example, a process PLC (Programmable Logic Controller) may be used as the process controller.

[0163] These process controllers can control equipment related to each process, such as the operation of motors required for electrode movement, motor rotation speed, etc. Or, they can manage process parameters required for each process. As exemplary process parameters, in the coating process, electrode drying temperature and / or electrode temperature can be managed, and in the roll pressing process, roll pressing pressure, etc. can be adjusted. Accordingly, the equipment data can include various process parameter data managed by the process controller in each process.

[0164] In addition, process event data may include process-related measurement data and / or inspection data acquired in each process. For example, in a coating process, the electrode slurry loading amount or a reference point marked on the electrode may be measured. In a roll pressing process, the electrode thickness after roll pressing may be measured. In addition, a visual inspection device (e.g., a vision inspection device) may be commonly employed in the coating process, roll pressing process, slitting process, etc. Measurement data and / or inspection data include all data inspected or measured by a predetermined measuring device and / or inspection device in each process.

[0165] These process event data are generated as various processes are performed on the electrode, and these process event data can be acquired for each individual process.

[0166] Referring back to FIG. 1, the electrode assembly manufactured by being wound in the winding device (14) may be transported and accommodated in a case or housing such as a can. The can (or housing) may be provided with a can ID, which is a separate can identification information, and this can ID is a type of battery cell ID. Accordingly, historical data on the manufacture of the battery cell may be retrieved based on the can ID.

[0167] However, before the electrode assembly is accommodated in a can, multiple electrode assemblies may be accommodated and stored on a tray, or the tray may be transported and transferred to a can during the logistics flow. If multiple electrode assemblies are mixed during this process, it is difficult to determine what materials (electrodes, separators, etc.) the electrode assembly accommodated in the can is composed of, even if a can ID is assigned during the can manufacturing process. In other words, a gray zone occurs between the winding process and the can manufacturing process, where the electrode assembly cannot be tracked. Accordingly, even if a roll map is created in each sub-process prior to the winding process and process event data or coordinate data (CD) related to the electrodes of each sub-process are secured, the data cannot be linked to the electrodes provided in the electrode assembly and tracked in various processes between each sub-process and the can manufacturing process.

[0168] According to the technical idea of ​​the present invention, in order to prevent the above-mentioned gray zone from occurring, identification information (ID) can be assigned to the electrode assembly manufactured in the winding process. The identification information can be assigned based on the cut count value and / or pattern number (or pattern indicator) of the electrodes included in the electrode assembly.

[0169] The winding process may refer to a process in which an electrode and a separator are wound in a winder. Additionally or alternatively, the winding process may include all processes in which electrode sheets and separator sheets unwound from electrode rolls and separator rolls are processed and cut and then wound in a winder. That is, the unwinding process, the inspection and / or measurement process, the cutting process, and the winding process in the winder are all included in the winding process. In one embodiment, a roll map may be created to simulate the electrode moving during the winding process. As described above, the roll map may simulate a moving real electrode (e.g., a real electrode moving between an unwinder and a rewinder). In one embodiment, the roll map may be displayed on a display device including a two-dimensional graphical interface or a three-dimensional graphical interface. In one embodiment, the roll map may include various data collected during the manufacture of the electrode and / or battery. Additionally or alternatively, the roll map may include data related to the electrode manufacturing process according to the present disclosure. For example, the data may be displayed on the display device described above and stored on one or more servers (e.g., server (180)) for processing and tracking.

[0170]

[0171] The roll map of the winding process includes position data and process event data indicating the position of each electrode moving during the winding process. The identification information of the electrode assembly may be associated with the electrode position data and process event data. The position data and process event data of each electrode input into the winding process may be compared with the roll map data (e.g., position data, process event data) of each process generated in each sub-process prior to the winding process.

[0172] Furthermore, the identification information of the electrode assembly can be associated with data acquired in subsequent processes after the winding process (e.g., data related to the tray on which the electrode assembly is loaded, can ID, etc.). Accordingly, data associated with each electrode assembly can be retrieved between the winding process and subsequent processes based on the identification information, thereby facilitating quality tracking between the winding process and subsequent processes. As described above, data generated during the winding process can be included in a roll map displayed on a display and can be stored, processed, and / or tracked.

[0173] In conclusion, using the identification information of the electrode assembly, all historical data related to electrode quality and manufacturing can be tracked throughout the winding process and all pre- and post-processes. This enables efficient process and quality control throughout the entire battery manufacturing process, enabling more reliable battery manufacturing.

[0174] Figure 2 shows a visualized roll map and pattern electrodes.

[0175] In Fig. 2, arrow X indicates the longitudinal direction (driving direction) of the electrode (roll map), and arrow Y indicates the width direction of the electrode (roll map).

[0176] The visualized roll map (VRM) of Fig. 2(a) may include a plurality of visualization sections (VS1, VS2, VS3, VS4, VS5, VS6) corresponding to a plurality of sections of the electrode sheet. Each of the plurality of visualization sections (VS1, VS2, VS3, VS4, VS5, VS6) may include a start coordinate, an end coordinate, and a color.

[0177] The representative value of the coordinate-related measurement data (CMD) of the visualization sections (VS1, VS2, VS4, VS6) can be displayed in color (C1), the representative value of the coordinate-related measurement data (CMD) of the visualization section (VS3) can be displayed in color (C2), and the representative value of the coordinate-related measurement data (CMD) of the visualization section (VS5) can be displayed in color (C3).

[0178] Color (C1) may indicate that the representative value of the visualization sections (VS1, VS2, VS4, VS6) is normal, color (C2) may indicate that the representative value of the visualization section (VS3) is excessive, and color (C3) may indicate that the representative value of the visualization section (VS3) is very excessive. Color (C4) may indicate that the representative value is insufficient, and color (C5) may indicate that the representative value is very insufficient. In an embodiment, "normal or sufficient" may be defined as data that satisfies or is within one or more predetermined manufacturing tolerance characteristics or ranges of the electrode manufacturing process according to the present disclosure. Conversely, excessive or insufficient (insufficient) data may be defined as data that does not satisfy or is outside one or more predetermined manufacturing tolerance characteristics or ranges of the electrode manufacturing tolerance.

[0179] In this way, the roll map can express the position of the electrode as a coordinate and visualize the measurement data (e.g., electrode slurry loading amount data) for each position, so the efficiency of electrode production management can be improved by using the roll map and the data included therein.

[0180] Figure 2(b) shows a pattern electrode having a pattern in which a coated portion (1) and a non-coated portion (2) are repeatedly arranged.

[0181] The pattern electrode is slit in the width direction based on the non-coated portion (1) between the coated portions (2) in a subsequent process. The slit electrode coated portion (2) can be laminated with electrode coated portions and separators of different polarities to form an electrode assembly, or can be rolled up together with electrode coated portions and separators of different polarities to form a jelly roll-shaped electrode assembly.

[0182] For example, a pattern electrode used for a small battery can be slit in the width direction and simultaneously slit along the length direction of the pattern electrode to form a plurality of electrode lanes (L1 to L20) as shown in Fig. 2(b).

[0183] In one embodiment, the electrode sheet may have electrode coating portions formed continuously or adjacently along the longitudinal direction. Alternatively, the electrode sheet may include a pattern electrode including electrode coating portions formed intermittently (e.g., at intervals). Therefore, a roll map method such as FIG. 2(a), which continuously represents the longitudinal position of the electrode with a length coordinate, may not be suitable for the pattern electrode. For example, the uncoated portion of the pattern electrode has a measurement value such as a loading amount of 0, and is not a significant portion that affects actual battery performance. Therefore, there is less need to display in detail the measurement data and coordinates for this portion. In addition, the pattern electrode is manufactured as an electrode assembly according to the length and width of the electrode coating portion (2) that constitutes the pattern. That is, the electrode production performance processing is aggregated by the number of electrode coating portions (2) or patterns including the electrode coating portions (2). In this way, pattern electrodes need to be provided with positional data based on the characteristics of the pattern electrodes, in which the electrodes are produced and managed based on the pattern, and the electrode coated portions and uncoated portions are intermittently coated. The present invention provides a battery manufacturing method and a battery manufacturing system capable of generating monitoring data based on pattern data (pattern indicators or pattern numbers), which are positional data suitable for such pattern electrodes.

[0184]

[0185] Figure 3 illustrates a battery manufacturing system according to exemplary embodiments.

[0186] Figure 4 is a schematic diagram showing an example in which an electrode and a separator are wound by a winder to a predetermined length.

[0187] Figure 5 is a schematic diagram showing another example in which an electrode and a separator are wound by a winder.

[0188] Figure 6 illustrates that identification information of an electrode assembly is associated with other information.

[0189] Referring to FIG. 3, the battery manufacturing system (1000) may include unwinders (UWN, UWP, UWS1, UWS2), a first position measuring device (111N, 112N) and a second position measuring device (111P, 112P), a first pattern counter (120N) and a second pattern counter (120P), various measuring devices and / or inspectors (130), a first cutter (140N), a second cutter (140P), a winder (150), an identification information management server (160), a process controller (170), and a monitoring server (180).

[0190] In this specification, for the convenience of explanation, data acquired for the first electrode sheet (ESN), devices related to the first electrode sheet (ESN), etc. are referred to as “first,” and data acquired for the second electrode sheet (ESP), devices related to the second electrode sheet (ESP), etc. are referred to as “second.”

[0191] A first electrode roll (ERN) can be loaded onto an unwinder (111N). The unwinder (111N) can be configured to unwind a first electrode sheet (ESN), for example, a cathode sheet, from the first electrode roll (ERN).

[0192] The second electrode roll (ERP) can be loaded onto the unwinder (111P). The unwinder (111P) can be configured to unwind the second electrode sheet (ESP), which is, for example, a positive electrode sheet, from the second electrode roll (ERP).

[0193] A separator roll (SR1) can be loaded into an unwinder (UWS1), and a separator roll (SR2) can be loaded into an unwinder (UWS2). Each unwinder (UWS1, UWS2) can be configured to unwind each separator sheet (SS1, SS2).

[0194] A first electrode sheet (ESN), a second electrode sheet (ESP), and two separator sheets (SS1, SS2) can be guided by guide rolls (not shown in FIG. 3) and moved toward a cutter (140N, 140P) and a winder (150). A plurality of guide rolls may be provided corresponding to the movement path of each sheet. The sheets guided by each guide roll can join in front of the cutter (140N, 140P).

[0195] Each of the first electrode roll (ERN) and the second electrode roll (ERP) may be one of the electrode rolls that have been processed in a previous sub-process (e.g., a coating process, a roll pressing process, a slitting process) and then transferred to the battery manufacturing system (1000). The electrode rolls may include defect tags (NG tags) attached in a previous sub-process (e.g., a roll pressing process or a slitting process). Instead of the defect tags, marking of a defective portion may be performed directly on the electrode. Accordingly, the electrode rolls may include a defect marking portion marked on the electrode in a previous sub-process. In addition, the electrode rolls may include reference points marked on the electrode at predetermined intervals in a previous sub-process (e.g., a coating process). In addition, the electrode rolls may include a connecting portion that connects a portion of the electrode that has been cut by fracture or defect removal in a previous sub-process, between sub-processes, or after a sub-process. For example, a connecting tape (adhesive tape) is attached to the connecting portion. In the winding process, the positions of the reference point, connection part, and defect marking part (including defect tag) of each electrode unwound from each electrode roll by the unwinder can be detected, thereby identifying the change in length of each electrode sheet from the previous sub-process. The change in length can be indicated on a roll map. The monitoring server (180) stores roll map information of each previous sub-process. Therefore, process control in the winding process can be efficiently performed using the roll map information of each sub-process. In addition, as described below, if an event occurring in an electrode sheet moving during the winding process is detected, and the positions of the reference point, connection part, and defect marking part described above are changed due to the event, this can be displayed on the roll map of the winding process equipped with process event data of the winding process. Furthermore, by comparing the roll map of the winding process with the roll map of each previous sub-process, the change in electrodes that occurred between various processes can be identified.

[0196] The first electrode sheet (ESN) and the second electrode sheet (ESP) are patterned electrode sheets as shown in Fig. 2(a).

[0197] In order to specify the position of the pattern on the pattern electrode sheet, a pattern number or pattern indicator is assigned to the patterns of each electrode sheet. One pattern may include one electrode coating portion (2) and one uncoated portion (1) continuous or adjacent to the coating portion. However, since the part that actually functions as a battery is the electrode coating portion (2), the pattern number or pattern indicator may be assigned based on each pattern of the electrode coating portion (2). The pattern number or pattern indicator data (PND1, PND2) may be acquired by counting so that the pattern number or pattern indicator increases or decreases for each pattern of the electrode coating portion (2). Alternatively, the pattern position may be obtained according to one or more sequences or orders of the pattern numbers or pattern indicators. That is, one or more patterns of the electrode coating portion (2) may be associated with one or more pattern numbers or pattern indicators based on the coordinate positions of the patterns of the electrode coating portion (2). The pattern numbers or pattern indicators are not necessarily expressed only in Arabic numerals. If a sequence number can be displayed, the sequence number (pattern number or pattern indicator) may also be displayed as an alphabet, other letters or symbols, or a combination of numbers, symbols and letters.

[0198] In order to distinguish the positions of the patterns on the first and second electrode sheets, the pattern number or pattern indicator assigned to the patterns of the first electrode sheet is referred to as a first pattern number or a first pattern indicator, and the pattern number or pattern indicator assigned to the patterns of the second electrode sheet is referred to as a second pattern number or a second pattern indicator. Accordingly, the first pattern number or pattern indicator can intermittently (or at intervals) indicate the position on the first electrode sheet moving between the first electrode roll and the winder. In addition, the second pattern number or pattern indicator can intermittently indicate the position on the second electrode sheet moving between the second electrode roll and the winder.

[0199] In one embodiment, the first pattern counter (120N) can count patterns on the first electrode sheet (ESN) moving between the first electrode roll (ERN) and the winder (150).

[0200] The second pattern counter (120P) can count patterns on the second electrode sheet (ESP) moving between the second electrode roll (ERP) and the winder (150).

[0201] The above pattern counters can be installed at the same or adjacent positions as the first cutter (140N) and the second cutter (140P) adjacent to the winder (150). Therefore, when the cutters acquire cut count values, the pattern counters can also count the pattern numbers or pattern indicators of the electrode sheets being cut.

[0202] The first and second pattern counters (120N, 120P) may include a pitch sensor and a trigger board. The pitch sensor may measure the length of each pattern, i.e., the pitch of each pattern.

[0203] According to an exemplary embodiment, the pitch sensor may be or include a photoelectric sensor. The photoelectric sensor is composed of a light emitter and a light receiver. When light emitted from the light emitter is blocked or reflected by an object to be detected, the amount of light reaching the light receiver changes. The light receiver detects this change, converts it into an electrical signal, and outputs it. The amount of light emitted from the light emitter reaches the light receiver changes based on the boundary between the electrode coating portion (2) and the non-coated portion (1) on the pattern electrode. Accordingly, a pattern counter (120N, 120P, 140N, 140P) equipped with a pitch sensor can distinguish between the electrode coating portion (2) and the non-coated portion on the pattern electrode. An optical fiber sensor may be used as the photoelectric sensor. An optical fiber sensor uses an optical fiber instead of a lens of a photoelectric sensor, and since the optical fiber, which is a detection portion, has no electrical parts at all, it has the advantage of excellent environmental resistance such as noise resistance.

[0204] The pitch sensor can transmit the length of the detected pattern to the trigger board. The trigger board can generate count information for each pattern based on the length of each pattern received from the pitch sensor. The trigger board can increase the BCD (Binary Coded Decimal) code by 1 whenever the count value for each pattern length increases. The trigger board can convert the count value for each generated pattern length into the form of BCD code and transmit it to the process controller or server.

[0205] In the present embodiment, pattern number data or pattern indicators (PND1, PND2) and coordinate data (CD) can be used together to indicate the longitudinal position of the electrode sheet. For example, while pattern number or pattern indicator data (PND1, PND2) including pattern numbers or pattern indicators that intermittently indicate the position on the electrode sheet as the main position data are acquired, coordinate data (CD) including coordinate values ​​that can continuously indicate the longitudinal position can be further acquired. The coordinate values ​​and the difference between the coordinate values ​​directly indicate the position of the electrode sheet or the distance of a specific section. Therefore, by acquiring the coordinate data, position information about the electrode sheet can be acquired more accurately by excluding the influence of the moving speed of the electrode sheet without performing additional calculations. By associating such coordinate data with the pattern number or pattern indicator data (PND), or with measurement data and / or inspection data, or with measurement data and / or inspection data associated with the pattern number or pattern indicator data (PND), status information on the electrode sheet can be obtained more accurately and reliably.

[0206] In addition, the length of the electrode coated portion, the length of the uncoated portion, and the length of the pattern can be quickly determined based on the difference in coordinate values ​​between the start and end points of each pattern, the difference in coordinate values ​​between the start and end points of the coated portion, and the difference in coordinate values ​​between the start and end points of the uncoated portion. By comparing the determined pattern length with the set pattern pitch, patterns with excessive or insufficient pitch can be easily identified.

[0207] First pattern number data (PND1) including the first pattern number or pattern indicators acquired by the first pattern counter (120N) and second pattern number data (PND2) including the second pattern number or pattern indicators acquired by the second pattern counter (120P) can be transmitted to the process controller (170).

[0208] To obtain coordinate data, a first position measuring device (111N, 112N) and a second position measuring device (111P, 112P) are provided.

[0209] The first position measuring device (111N, 112N) can acquire first coordinate data that can continuously indicate the position on the first electrode sheet (ESN) moving between the first electrode roll (ERN) and the winder (150).

[0210] Among the first position measuring devices, the first position measuring device (111N) installed on the unwinder (UWN) side may be configured to sense the amount of electrode sheets (ESN) unwound from the electrode roll (ERN) by the unwinder. Accordingly, the first position measuring device (111N) may be configured to generate an unwinding amount signal indicating the unwinding amount of the electrode sheets (ESN). The first position measuring device (111N) may convert the unwinding amount signal to directly obtain input amount data (coordinate data). Alternatively, the first position measuring device (111N) may transmit the unwinding amount signal to the process controller (170), and the process controller (170) may convert the signal to collect first coordinate data.

[0211] A first position measuring device (112N) is installed on the side of the first cutter (140N) near the guide roll where each sheet joins. The first position measuring device (11N) can be configured to detect the amount of the first electrode sheet (ESN) moving to the winder (150). Accordingly, the first position measuring device (112N) can be configured to detect the exhaustion amount of the first electrode sheet (ESN) moving to the winder (150). The first position measuring device (112N) can convert the exhaustion amount signal to directly acquire first coordinate data. Alternatively, the first position measuring device (112N) can transmit the exhaustion amount signal to the process controller (170), and the process controller (170) can convert the signal to collect coordinate data.

[0212] The second position measuring device (111P, 112P) can acquire second coordinate data (CD2) that can continuously indicate the position on the second electrode sheet (ESP) moving between the second electrode roll (ERP) and the winder (150).

[0213] Among the second position measuring devices (111P, 112P), the second position measuring device (111P) installed on the unwinder (UWP) side can obtain second coordinate data of the second electrode sheet (ESP) based on the discharge amount signal. Among the second position measuring devices (111P, 112P), the second position measuring device (112P) installed on the second cutter (140P) side can obtain second coordinate data based on the exhaust amount signal.

[0214] The above first and second position measuring devices (111N, 112N, 111P, 112P) may be rotary encoders that can express the position signal of the electrode sheet moving according to the rotation amount of the unwinder or the guide roll as an encoder value. Alternatively, they may be linear encoders that express the position signal corresponding to the movement displacement of the electrode sheet as an encoder value. The encoders may be configured to be contact-type or non-contact-type with the electrode sheet. The encoders may have a predetermined calculation unit to convert the encoder value into a coordinate value. Alternatively, the controller may receive the encoder value and convert the encoder value into a coordinate value through a predetermined calculation. Considering the load on the process controller, it may be desirable to directly convert it into a coordinate value from the encoder.

[0215] The first electrode sheet (ESN) advances a predetermined distance (Xn) from the first position measuring device (112N) installed on the side of the first cutter (140N) toward the first cutter (140N). Therefore, the coordinate value of the first electrode sheet (ESN) with respect to the first cutter (140N) can be corrected by adding the predetermined distance (Xn) to the coordinate value of the first electrode sheet (ESN) collected based on the sensing signal of the first position measuring device (112N) installed on the side of the first cutter (140N).

[0216] The second electrode sheet (ESP) advances a predetermined distance (Xp) from the second position measuring device (112P) installed on the second cutter (140P) side toward the second cutter (140P). Therefore, the coordinate value of the second electrode sheet (ESP) with respect to the second cutter (140P) can be corrected by adding the predetermined distance (Xp) to the coordinate value of the second electrode sheet (ESP) collected based on the sensing signal of the second position measuring device (112P) installed on the second cutter (140P) side.

[0217] The pattern number or pattern indicator data of the first and second electrode sheets (ESN, ENP) acquired by the first and second pattern counters (120N, 120P) can be directly transmitted to the monitoring server (180) or to the monitoring server (180) through the process controller (170).

[0218] In addition, the coordinate data of each of the first and second electrode sheets (ESN, ENP) acquired by the first and second position measuring devices (111N, 111P, 112N, 112P) can be directly transmitted to the monitoring server (180) or to the monitoring server (180) through the process controller (170).

[0219] In addition, the coordinate values ​​of the respective pattern numbers or pattern indicators and the portions of the respective electrode sheets corresponding to the respective pattern numbers or pattern indicators may be associated with each other. The pattern number or pattern indicator data and the coordinate data may be associated with each other based on the same time or time interval at which each data was acquired. The association of the pattern number or pattern indicator and the coordinate values ​​may be performed in one of the processing unit of the measuring instrument and / or inspection device described below, the process controller, and the server.

[0220] Additionally, the above coordinate data and the pattern numbers or pattern indicators associated therewith may be associated with at least one of the identification information of the electrode assembly described below, the cut count value of the first electrode sheet, and / or the cut count value of the second electrode sheet. In the present disclosure, “and / or” is defined to include both connection and separation options. For example, A and / or B may be interpreted to include both “A and B” and “A or B.”

[0221] According to an exemplary embodiment, the battery manufacturing system (1000) of the present embodiment may include an additional position measuring device capable of detecting a position signal of each separator sheet (SS1, SS2).

[0222] The first electrode sheet (ESN) moved to the first cutter (140N) by the guide roll is cut by the first cutter (140N) by the first winding length (W1).

[0223] The second electrode sheet (ESP) moved to the second cutter (140P) by the guide roll is cut by the second cutter (140P) to the second winding length (W2).

[0224] The above unwinder (UWN, UWP), guide roll, first cutter (140N) and second cutter (140P) and winder (150) can be controlled by a process controller (170).

[0225] The cutters (140N, 140P) may be provided with a predetermined cutting portion (e.g., a cutting blade) and a moving mechanism of the cutting portion. In addition, the cutters (140N, 140P) may include a sensor (e.g., a photoelectric sensor) that can distinguish a coated portion and an uncoated portion on an electrode sheet. The first cutter (140N) and the second cutter (140P) may include a cut counter (not shown) having, for example, a trigger board (not shown) for calculating a cut count value. The trigger board may generate cut count information based on each winding length (the first winding length or the second winding length). The trigger board may increase the count value for each received winding length of the electrode sheet. The trigger board may convert the generated cut count value of each electrode sheet into the form of a BCD code and transmit it to a process controller.

[0226] The above first cutter (140N) can cut the first electrode sheet (ESN) to the first winding length (W1) according to the instructions of the process controller (170).

[0227] The above second cutter (140P) can cut the first electrode sheet (ESN) to the first winding length (W1) according to the instructions of the process controller (170).

[0228] The process controller (170) can control the first cutter (140N) to cut the first electrode sheet (ESN) to a first winding length (W1). In addition, the process controller (170) can control the second cutter (140P) to cut the second electrode sheet (ESP) to a second winding length (W2). The process controller (170) can control each cutter based on information about the first winding length (W1), the second winding length (W2), and the third winding length (W3). The process controller (170) may include information about the entire electrode sheet transport path (distance) along which the first electrode sheet (ESN) released from the first electrode roll (ERN) reaches the first cutter (140N), the entire electrode sheet transport path (distance) along which the second electrode sheet (ESP) released from the second electrode roll (ERP) reaches the second cutter, and the separator transport path (distance) along which the separators released from each separator roll reach the cutters. For example, the process controller (170) may receive signals or data about the amount (input amount) of each electrode sheet released from the first position measuring device and the second position measuring device described above, or signals or data about the amount (consumption amount) that reaches the cutters (140N, 140P). Based on these signals and data, the process controller (170) may determine the entire transport distance of each electrode sheet. In addition, based on information about each winding length and information about the pattern length (pattern pitch), the process controller (170) can determine how many electrode sheet portions corresponding to each winding length are present within the total transport distance of each electrode sheet. Accordingly, the process controller (170) can control each cutter so that each cutter cuts each electrode sheet by the corresponding winding length.

[0229] The cut count value of the first electrode sheet cut by the first cutter (140N) and the cut count value of the second electrode sheet cut by the second cutter (140P) can be transmitted to the process controller (170).

[0230]

[0231] At least one first electrode measuring device and / or inspector is provided between the first electrode roll and the winder to inspect the first electrode sheet (ESN) and the second electrode sheet (ENP), and at least one second electrode measuring device and / or inspector is provided between the second electrode roll and the winder.

[0232] For convenience of explanation, only one measuring instrument and / or tester (130) is illustrated in FIG. 3, but the measuring instrument and / or tester may be provided for each electrode sheet.

[0233] According to exemplary embodiments, the measuring device and / or inspector (130) may be a reference point measuring device that measures the position of a reference point marked on each electrode sheet. Alternatively, the measuring device and / or inspector (130) may be a visual inspection device (e.g., a vision inspection device) for inspecting defects on each electrode sheet. Alternatively, the measuring device and / or inspector (130) may be a seam sensor (131) for detecting a connecting tape on each electrode sheet. The measuring device and / or inspector (130) is not limited to the types described above.

[0234] Each measuring instrument and / or tester (130) may include a sensing unit (130S) and a processing unit (130P). The sensing unit (130S) and the processing unit (130P) may be connected by wire or wirelessly.

[0235] The sensing unit (130S) may include an imaging device such as a Time Delay and Integration (TDI) camera, a Complementary Metal Oxide Semiconductor (CMOS) image sensor, etc. The sensing unit (130S) may be configured to generate an inspection signal (IS) indicating the surface of each electrode sheet (ESN, ESP) or a measurement signal (MS) measuring the dimension or width, etc. The sensing unit (130S) may transmit the inspection signal (IS) or the measurement signal (MS) to the processing unit (130B).

[0236] The processing unit (130P) may be configured to determine a judgment value indicating the presence or absence of a defect in the electrode sheet (ESP, ESN) based on the inspection signal (IS) and / or the measurement signal (MS). The processing unit (130B) may be configured to generate a judgment value for the electrode sheet (ESP, ESN) by processing the inspection signal (IS) and / or the measurement signal (MS) based on a set algorithm.

[0237] The processing unit (130P) may be configured to collect position-related measurement data and / or inspection data based on an inspection signal (IS) and / or a measurement signal (MS) and position data (pattern number or pattern indicator data (PND) and coordinate data (CD)). For example, the processing unit (130P) may collect measurement data and / or inspection data (PNMD / PNID) associated with pattern number data or pattern indicator. In this case, the pattern number or pattern indicator data (PND1, PND2) may be transmitted to the processing unit (130P) directly from the first and second pattern counters or through the process controller (170).

[0238] For example, the processing unit (130P) can collect measurement data and / or inspection data (CMD / CID) associated with coordinate data. In this case, the coordinate data (CD1, CD2) can be transmitted to the processing unit (130P) directly from the first and second position measuring devices or through the process controller (170).

[0239] For example, the processing unit (130P) may collect measurement data and / or inspection data (PNCMD / PNCID) associated with the pattern number or pattern indicator data and coordinate data. In this case, the pattern number or pattern indicator data, coordinate data, and measurement data and / or inspection data may be associated with each other based on the same time or time interval.

[0240] The processing unit (13OP) can transmit measurement data and / or inspection data associated with position data (pattern number or pattern indicator data (PND) and / or coordinate data (CD)) to the server (180) directly or through the process controller (170).

[0241] Each first electrode sheet (ESN) portion of the cut first winding length (W1) is moved to the winder (150) together with the separator sheet (SS1). In addition, each second electrode sheet (ESP) portion of the cut second winding length (W2) is moved to the winder (150) together with the separator sheet (SS2). Each separator sheet may be moved to the winder (150) without being cut in advance so as to support the electrode sheets being moved.

[0242] The winder (150) may be configured to wind together a first electrode sheet (ESN), a separator sheet (SS1), a second electrode sheet (ESP), and a separator sheet (SS2). Accordingly, an electrode assembly (EA) of a battery (e.g., a cylindrical battery) may be provided. The electrode assembly (EA) may include a winding structure of the first electrode sheet (ESN), the separator sheet (SS1), the second electrode sheet (ESP), and the separator sheet (SS2). The first electrode sheet (ESN) and the second electrode sheet (ESP) may be electrically isolated by the separator sheets (SS1, SS2). Accordingly, despite the winding of each sheet, a short circuit of the first electrode sheet (ESN) and the second electrode sheet (ESP) may be prevented. The separator sheet may be cut by a separator cutter (not shown) after winding.

[0243] In one embodiment, the first electrode sheet (ESN) and the second electrode sheet (ESP) can be first cut and then wound with the separator sheet.

[0244] Alternatively, after winding each electrode sheet and separator, it is also possible to cut the ends of the wound electrode assembly and the connection portions of each electrode sheet, and the connection portions of the ends and the separator. In this case, after the separator sheet (SS2), the second electrode sheet (ESP), the separator sheet (SS1), and the first electrode sheet (ESN) have each reached a target winding length, a corresponding cutter can cut the separator sheet (SS2), the second electrode sheet (ESP), the separator sheet (SS1), and the first electrode sheet (ESN) to separate the electrode assembly (EA).

[0245] The manufactured electrode assembly (EA) can be discharged outside the electrode assembly manufacturing unit. The discharged electrode assembly (EA) can be inspected by a separate inspector (135) and then transferred to a tray (T) by a predetermined transfer device (TM). The electrode assembly (EA) determined to be defective by the inspector (135) can be discharged to a defect storage port (S2) and stored.

[0246] Additionally or alternatively, the electrode assemblies (EA) determined to be normal can be stored in a storage port (S1). The electrode assemblies (EA) in the storage port (S1) can be gripped by, for example, a gripper (TMH) of a transport device (TM) and transferred to a tray (T) according to a logistics transport schedule. The tray (T) includes a plurality of electrode assembly (EA) storage locations. Each electrode assembly (EA) can be stored at a specific location within the tray (T), for example, sequentially according to a transport order or according to a separate loading algorithm. For example, when there are a plurality of rows (X1, X2,,,,Xn) and columns (Y1, Y2,,,Yn) within the tray (T), the tray loading locations of the electrode assemblies (EA) can be specified by an ordered pair of matrices represented by the intersections of the rows and columns.

[0247] The electrode rolls (ERN, ERP) loaded into the unwinder constitute a lot. When each electrode roll is loaded into the unwinder, identification information (e.g., lot number) of each lot can be read out by a predetermined reader (e.g., BCR reader). Alternatively, the lot identification information of the corresponding electrode roll can be entered into the equipment or system by manual input by a worker. Alternatively, a code indicating lot identification information can be included in a reference point, defect marking, etc. marked on the electrode. Alternatively, when a seam sensor (131), which is one of the measuring devices arranged on the movement path of the first and second electrode sheets, detects a connecting tape (CT), the lot numbers of the first and second electrode rolls can be updated based on the detection signal. Accordingly, the coordinate values ​​of the first electrode sheet (ESN) and the coordinate values ​​of the second electrode sheet (ESP) can be reset based on the seam detection signal.

[0248] Accordingly, the lot identification information of the first electrode sheet (ESN) and the lot identification information of the second electrode sheet (ESP) used in the winding process can be identified. In addition, based on the lot identification information, the past manufacturing history information of the first and second electrode sheets, such as roll map information, can be identified.

[0249] , the completed electrode assembly (EA) is loaded onto a tray, and the identification information (e.g., tray ID) of the loaded tray (T) can be associated with the loaded electrode assembly (EA). In addition, the loading position of the electrode assembly on the tray can be identified.

[0250] However, as described above, if multiple electrode assemblies (EA) are mixed up during the process of being accommodated in a tray in the logistics flow, even if a can ID is assigned during the can manufacturing process, it is impossible to determine what material (electrode, separator, etc.) the electrode assembly (EA) accommodated in the can is made of. Therefore, even if there is manufacturing history information, such as roll map information, for the electrodes in each sub-process before the winding process, it is difficult to associate it with the manufacturing history information of the electrodes included in the electrode assembly (EA) loaded on the tray (T) or can.

[0251] To prevent this, the battery manufacturing system (1000) of the present invention includes an identification information assigning device that assigns identification information to the electrode assembly (EA).

[0252] The identification information of the electrode assembly (EA) needs to be associated with information that can identify the electrodes included in the electrode assembly (EA). In the winding process, multiple electrode sheet portions are cut and wound. Therefore, the identification information of the electrode assembly (EA) can be assigned based on information that can identify a portion of the first electrode sheet of the first winding length (W1) and a portion of the second electrode sheet of the second winding length (W2).

[0253] According to an exemplary embodiment, the identification information of the electrode assembly (EA) can be provided based on the following i) and ii).

[0254] ⅰ) Cut count value of the first electrode sheet and cut count value of the second electrode sheet

[0255] ⅱ) A first pattern number or pattern indicator of a first electrode sheet corresponding to the first winding length and a second pattern number or pattern indicator of a second electrode sheet corresponding to the second winding length.

[0256] The cut count value of the first electrode sheet and the cut count value of the second electrode sheet can be obtained by the first cutter (140N) and the second cutter (140P).

[0257] The first pattern number or pattern indicator of the first electrode sheet corresponding to the first winding length and the second pattern number or pattern indicator of the second electrode sheet corresponding to the second winding length can be acquired by the first pattern counter (120N) and the second pattern counter (120P).

[0258] The process controller (170) can assign identification information (ID) to the wound electrode assembly (EA) based on the received cut count value of the first electrode sheet (ESN) and the cut count value of the second electrode sheet (ESP), the first pattern number or pattern indicator of the first electrode sheet corresponding to the first winding length, and the second pattern number or pattern indicator of the second electrode sheet corresponding to the second winding length. That is, for example, when a specific portion of the first electrode sheet (ESN) is cut to the first winding length (W1), and the cut order is counted as a specific cut count value, and a specific pattern number or pattern indicator of a pattern(s) included in the specific portion of the first electrode sheet (ESN) is counted as the first pattern number or pattern indicator, the wound electrode assembly (EA) including the first electrode sheet (ESN) of the specific portion can be assigned specific identification information (ID).

[0259] Likewise, when a specific portion of the second electrode sheet (ESP) is cut to a second winding length (W2), the cut order is counted as a specific cut count value, and a specific pattern number or pattern indicator of the pattern(s) included in the specific portion of the second electrode sheet (ESP) is counted as the second pattern number or pattern indicator, a specific identification information (ID) can be assigned to the wound electrode assembly (EA) including the second electrode sheet (ESN) of the specific portion.

[0260] In some embodiments, identification information may be assigned to the electrodes provided from the first electrode sheet (ESN) and the electrodes provided from the second electrode sheet (ESP) to form an electrode assembly according to the present disclosure. For example, a pattern number or pattern indicator and / or a cut count value associated with the first electrode sheet (ESN) according to an embodiment of the present disclosure may be assigned to the electrodes from the first electrode sheet (ESN). In some embodiments, the assigned ID may be a virtual ID or a physical ID. The physical ID may be provided as a marking on the electrode if sufficient space (e.g., an uncoated portion) is provided on the electrode. Similarly, in some embodiments according to the present disclosure, a pattern number or pattern indicator and / or a cut count value associated with the second electrode sheet (ESP) may be projected onto the electrodes from the second electrode sheet (ESP). In some embodiments, the assigned ID may be a virtual ID or a physical ID. The physical ID may be provided as a marking on the electrode, provided sufficient space (e.g., an uncoated portion) is provided on the electrode.

[0261] In some embodiments, a separator provided to form an electrode assembly according to the present disclosure may be assigned an identification. For example, coordinate values ​​and / or cut count values ​​associated with the separator may be assigned to the separator according to an embodiment of the present disclosure. In one embodiment, the assigned ID may be a virtual ID or a physical ID. The physical ID may be provided as a marking on the separator.

[0262] In one embodiment, the ID of the electrode assembly (EA) may be assigned by physically marking the electrode assembly. Alternatively, the ID of the electrode assembly (EA) may be a virtual ID in which the process controller (170) virtually assigns identification information to the electrode assembly (EA).

[0263] The process controller (170) is capable of data communication with the first and second cutters (140N, 140P) and the first and second pattern counters (120N, 120P), and thus can assign an ID to the electrode assembly (EA) based on the cut count values ​​of the first and second electrode sheets described above and the first and second pattern numbers or pattern indicators. That is, the process controller (172) can be an identification information assigning device.

[0264] Additionally, the process controller (170) can control an unwinder, a cutter, a winder, etc. Therefore, if the process controller (170) is given a calculation for assigning an ID to the electrode assembly (EA) or an ID numbering function, the process controller (170) may be overloaded. In this case, there is a risk that the control speed of the process controller (170) may be slowed down. To prevent this, a dedicated server for assigning and managing identification information may be added. Referring to FIG. 3, an identification information management server (160) connected to the process controller (170) in a data communication manner is provided. The identification information management server (160) may be, for example, an ECS (Edge Computer System) and / or an EDC (Equipment Data Collection) server.

[0265] The identification information management server (160) can receive the cut count value and pattern number or pattern indicator of the first and second electrode sheets from the process controller (170) and issue a virtual ID to the corresponding electrode assembly (EA). In this case, the identification information providing device for the electrode assembly can be the identification information management server (160).

[0266] Alternatively, the entire combination of the process controller (170) and the identification information management server (160) can also be viewed as an identification information granting device.

[0267] The above process controller (170) and / or the identification information management server (160), or the monitoring server (180) described below, may further associate coordinate data in addition to the identification information, cut count value, and pattern number (data). For example, coordinate values ​​corresponding to the first winding length of the first electrode sheet obtained from the first position measuring device (111N, 112N), which is a rotary encoder (at least one of the start coordinate value and the end coordinate value of the first winding length),

[0268] The coordinate values ​​corresponding to the second winding length of the second electrode sheet acquired from the second position measuring device (111P, 112P) (at least one of the start coordinate value and the end coordinate value of the second winding length) are

[0269] The cut count value and pattern number or pattern indicator (data) acquired at the same time as the above coordinate value acquisition time are associated with each other, and accordingly, the coordinate values ​​can also be associated with the identification information of the electrode assembly.

[0270] Accordingly, the process controller (172) and / or the identification information management server (160), or the monitoring server (180) described below, may assign identification information (ID) to the corresponding electrode assembly (EA) based on, or in association with, the start coordinate value and the end coordinate value of the first winding length (W1) of the first electrode sheet and the start coordinate value and the end coordinate value of the second winding length (W2) of the second electrode sheet.

[0271] In this way, when the ID of the electrode assembly (EA) is identified, the cut count value and position data (pattern number or pattern indicator, coordinate value) of the electrodes included in the electrode assembly are specified. Based on the cut count value and position data, the manufacturing history of each sub-process before the winding process can be traced. In addition, the defect inspection, transportation, tray loading, and can storage processes of the electrode assembly are performed based on the ID of the electrode assembly (EA). Therefore, the manufacturing history of the processes after the winder (150) can also be easily traced based on the identification information of the electrode assembly (EA).

[0272] Meanwhile, the process controller (172) and / or the identification information management server (160) can manage the identification information of the electrode assembly (EA) by associating it with the process event data of each electrode. For example, since the measurement data and / or inspection data acquired by various measuring instruments and / or inspection instruments in the process from the unwinder to the winder are associated with the position data (pattern number data, coordinate data), the identification information of the electrode assembly associated with the position data can be associated with the measurement data and / or inspection data via the position data.

[0273] The above process controller (170) controls each device provided for the winding process and simultaneously transmits data acquired from each device to the monitoring server (180). In addition, the identification number management server (160) transmits identification information (ID) assigned to the electrode assembly (EA) to the monitoring server (180).

[0274] The process controller (172) can transmit measurement data and / or inspection data (PNMD / PNID) associated with a pattern number or pattern indicator, measurement data and / or inspection data (CMD / CND) associated with coordinate data, and measurement data and / or inspection data (PNCMD / PNCND) associated with a pattern number or pattern indicator and coordinate data to the monitoring server (180) via an intermediary server such as EIF. The monitoring server (180) can generate a first electrode roll map, which can include a graphic or data simulation of an electrode, including first position data (pattern number or pattern indicator data, coordinate data) of a first electrode sheet moving from the first electrode roll to the winder, and first process event data associated with the first position data.

[0275] The monitoring server (180) may also generate a second electrode roll map including second position data (pattern number or pattern indicator data, coordinate data) of the second electrode sheet moving from the second electrode roll to the winder and second process event data associated with the second position data. The second electrode roll map may include a graphic or data simulation of the electrode.

[0276] According to exemplary embodiments, the monitoring server (180) may be a data processing system that supports various activities necessary for managing battery manufacturing, such as work schedule management, work instructions, quality control, and work performance aggregation. The monitoring server (180) may be, for example, a Manufacturing Execution System (MES). The monitoring server (180) may be configured to input, process, output, and communicate data necessary for electrode manufacturing, such as coating processes, press processes, and manufacturing processes.

[0277] According to other exemplary embodiments, the monitoring server (180) may be configured to store and process raw measurement data. The monitoring server (180) may continuously monitor the processing of the electrode sheets based on the measurement data, thereby managing the quality of the processing of the electrode sheets. According to exemplary embodiments, the monitoring server (180) may be a Statistical Process Controller (SPC). The monitoring server (180) may collect and analyze manufacturing data in near real-time, thereby promptly identifying problem conditions and providing alerts to operators before potential problems occur.

[0278] According to other exemplary embodiments, the monitoring server (180) may be, for example, a data warehouse and may store the roll map for a long period of time based on the quality assurance period of the product, etc.

[0279] According to other exemplary embodiments, the monitoring server (180) may perform all of the functions of MES, SPC, and data warehouse, or may be provided separately from MES, SPC, and data warehouse for role map generation.

[0280]

[0281] Referring to FIG. 4, a first electrode sheet (ESN) of a first winding length (W1) and a second electrode sheet (ESP) of a second winding length (W2) are wound together with a separator of a third winding length (W3) to form an electrode assembly (EA).

[0282] In order to ensure electrical safety or insulation when the electrode assembly (EA) is formed in a jellyroll shape, the first to third winding lengths may be determined differently. For example, the winding length of the separator (the third winding length (W3)) located between the first electrode sheet and the second electrode sheet may be greater than the winding lengths of the other electrode sheets. In this way, the separator may be located at the radially outermost side of the jellyroll-shaped electrode assembly, thereby preventing the first and second electrode sheets from directly contacting each other and causing an electrical short circuit. In addition, for example, the winding length of the first electrode sheet, which is a cathode, (the first winding length (W1)) may be greater than the winding length of the second electrode sheet, which is a positive electrode, (the second winding length (W2)).

[0283] Referring to Fig. 4, the first electrode sheet of the first winding length (W1) includes a first electrode coating portion belonging to a first pattern (first pattern number or pattern indicator ①). Non-coated portions exist on both sides of the first electrode coating portion. The combined length of the first electrode coating portion and the non-coated portions on both sides is set as the first winding length (W1). The first winding length (W1) is stored in the process controller (170) and the first cutter (140N).

[0284] The second electrode sheet (ESP) of the second winding length (W2) includes a second electrode coating portion belonging to a second pattern (second pattern number or pattern indicator ⓐ). Non-coated portions exist on both sides of the second electrode coating portion. The combined length of the second electrode coating portion and the non-coated portions on both sides is set as the second winding length (W2). The second winding length (W2) is stored in the process controller (170) and the second cutter (140P). In this way, the electrode assembly (EA) can be manufactured by providing one first electrode coating portion and one second electrode coating portion (one pattern each) corresponding to the first winding length (W1) and the second winding length (W2), respectively.

[0285] Pattern numbers or pattern indicators do not necessarily have to be displayed in Arabic numerals, and can be displayed in alphabets, other characters or symbols, or a combination of numbers and characters, as long as the sequence can be displayed.

[0286] In one embodiment, referring to FIG. 5, the first electrode sheet of the first winding length includes a first electrode coating portion belonging to a first pattern (first pattern number or pattern indicator ①), but the second electrode sheet of the second winding length includes two second electrode coating portions belonging to adjacent patterns (second pattern numbers or pattern indicators ⓐ, ⓑ) respectively and an uncoated portion located between the two second electrode coating portions. That is, in this case, one pattern number or pattern indicator corresponds to two pattern numbers or pattern indicators. Since the second electrode sheet has 1 / 2 of the second electrode coating portions having two pattern numbers, the overall length of the second electrode coating portion of the second electrode sheet becomes approximately the same as one pattern. When manufacturing an electrode assembly by winding with a pattern arrangement as in FIG. 5, there is no uncoated portion at both ends of the second electrode coating portion. Therefore, the risk of a short circuit occurring due to contact with the current collector (uncoated portion) that may occur when the separator interposed between the two electrode sheets is damaged can be reduced.

[0287] Additionally, in terms of energy density, the electrode assembly (EA) wound in the form of Fig. 5 has a more advantageous aspect.

[0288] Figure 6 illustrates monitoring data generated by the monitoring server (180). The monitoring server (180) can generate monitoring data for battery manufacturing by associating the identification information of the electrode assembly with one or more of the following.

[0289] 1) A first pattern number or pattern indicator of the first electrode sheet and / or a second pattern number or pattern indicator of the second electrode sheet.

[0290] 2) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet

[0291] 3) Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet

[0292] 4) At least one of the start coordinate value and the end coordinate value of the first winding length, and the start coordinate value and the end coordinate value of the second winding length.

[0293] 5) Data regarding defects in the first electrode sheet and / or second electrode sheet or defects in the electrode assembly.

[0294] 6) First process event data associated with the first location data and / or second process event data associated with the second location data.

[0295] 7) Tray identification information of the tray on which the above electrode assembly is loaded

[0296] 8) Data regarding the loading position of the electrode assembly on the tray.

[0297] 9) Can identification information of the electrode can in which the above electrode assembly is accommodated.

[0298] The upper part of Fig. 6 shows a roll map of the first and second electrode sheets (cathode sheet, anode sheet) moving in the winding process generated by the monitoring server (180).

[0299] The roll map of the negative electrode (sheet) displays the first pattern numbers or pattern indicators from ① to ⑩, and coordinate values ​​are displayed at each major point. However, the monitoring server (180) stores continuous coordinate values ​​(e.g., roll map coordinate values) that match the time values ​​along the longitudinal direction of the negative electrode sheet. Therefore, as shown in the table at the bottom of Fig. 6, the monitoring server (180) can call and correspond (relate) detailed coordinate values ​​(e.g., start coordinate values ​​and end coordinate values ​​of each winding length or start coordinate values ​​and end coordinate values ​​of each pattern) corresponding to each pattern section. The roll map of the negative electrode (sheet) also displays connecting tapes (CT) and appearance defects (AD) detected by a measuring instrument and / or an inspection instrument. The connecting tapes (CT) can be detected by a seam sensor (131). The cathode sheets are not made of a single lot, but are made of two lots (VO1 and VO2) connected by a connecting tape (CT). Therefore, when the connecting tape (CT) is detected, the coordinate values ​​of the electrode sheets of the second lot (VO2) are reset and start again from O.

[0300] The roll map of the positive electrode (sheet) displays the second pattern numbers or pattern indicators of ⓐ to ⓙ, and coordinate values ​​are displayed at each major point. As shown in the table at the bottom of Fig. 6, the monitoring server (180) can call up and associate detailed coordinate values ​​corresponding to each pattern section. The roll map of the positive electrode (sheet) also displays a connecting tape (CT) and an appearance defect (AD). The connecting tape (CT) can be detected by a seam sensor (132). The positive electrode sheet also has two lots (E23 and E24) connected by a connecting tape (CT). Therefore, when the connecting tape (CT) is detected, the coordinate values ​​of the electrode sheet of the second lot (E24) are reset and start again from O.

[0301] As illustrated in FIG. 6, it can be seen that the ID of the jelly roll (J / R) electrode assembly is assigned as J1 based on the pattern number or pattern indicator ①, ⓐ, the negative electrode cut count (Cut No) value of 696, and the positive electrode cut count value of 710. In this way, it can be seen that the ID of the electrode assembly is assigned from J1 to J12 based on the pattern number or pattern indicator and the cut count value of each electrode. As described above, the process controller and the identification information management server can assign the ID. The ID of the jelly roll (J / R) shaped electrode assembly can be a virtual or physical ID. The physical ID can be displayed on a suitable surface of the electrode assembly.

[0302] The lot identification information of the above 1) can be obtained, for example, when each electrode roll is loaded into a corresponding unwinder, and thus can be associated with the identification information of the electrode assembly (EA).

[0303] Additionally, for the ID of the electrode assembly, the starting and ending coordinates of the electrode (sheet) corresponding to each pattern number can also be associated as shown in the table in Fig. 6.

[0304] Also, referring to the bottom of the table in FIG. 6, the tray ID and its loading position (row and column) where the electrode assembly of a specific ID is loaded are also displayed. Information regarding the tray ID and loading position can also be transmitted to the monitoring server (180), so that the monitoring server (180) can also associate this information with the ID of the electrode assembly. Although not shown in FIG. 6, for example, when identification information (e.g., can ID) is assigned to the electrode can in which the electrode assembly is accommodated, the can ID can also be associated with the information. The can ID can be assigned, for example, for each tray loading position as shown in FIG. 6.

[0305] Figure 6 illustrates data of a wound electrode assembly such that each of the cathode and anode corresponds to a pattern (e.g., a number or indicator) (see Figure 4). Accordingly, each of the first pattern number or pattern indicator and the second pattern number or pattern indicator is associated.

[0306] However, when manufacturing an electrode assembly in the form of FIG. 5, it is also possible to correspond one first pattern number or pattern indicator of the cathode to two second pattern numbers or pattern indicators of the anode.

[0307] As shown in the roll map at the top of Fig. 6, the cathode displays first process event data associated with first position data (e.g., first pattern number or pattern indicator, first coordinate data (CD1)). For example, a connecting tape (CT) or an appearance defect (AD) displayed at a specific location are also process event data. In addition to defects, other measurement data and / or inspection data, such as loading amount and web thickness, may also be displayed on the roll map of the cathode.

[0308] Similarly, the second process event data associated with the second position data (second pattern number or pattern indicator, second coordinate data) is also shown at the anode.

[0309] In addition, the presence or absence of a defect can be determined using measurement data and / or inspection data acquired by the measuring instrument and / or inspection device (130), and these determination values ​​can also be acquired by the monitoring server (180) through the process controller (170). Depending on the type of the measuring instrument and / or inspection device (130), the type of defect can be identified. Accordingly, data regarding defects in the first electrode sheet and the second electrode sheet can be associated with the identification information of the electrode assembly (EA).

[0310] Defects in electrode sheets (ESN, ESP) can be identified by defect tags or defect markings attached to the actual electrode during a sub-process (e.g., a roll pressing process or a slitting process) prior to the winding process. Alternatively, if a connecting tape connecting a broken portion is detected during the winding process, the portion of the electrode sheet equipped with the connecting tape can be considered defective. Alternatively, a portion determined to be defective by a measuring instrument and / or an inspector during the winding process can be considered a defective electrode.

[0311] Meanwhile, if a defective electrode sheet (ESN or ESP) is wound with a separator sheet, a defective electrode assembly is formed and is discarded in the defective storage port (S2). In this case, the normal electrode sheet and separator sheet that are wound with the defective electrode sheet are also wasted.

[0312] Accordingly, the process controller can control the first cutter and the second cutter and the winder to cut only the defective electrode sheet when there is a defect in one of the first electrode sheet of the first winding length and the second electrode sheet of the second winding length, and to wind the cut defective electrode sheet together with the separator and discharge it as a defective electrode assembly.

[0313] For example, when a defective electrode sheet approaches the winder (150), the process controller (170) can generate a signal to control the unwinder, guide roll, or other driving mechanism to stop unwinding of other electrode sheets that are not defective. Accordingly, only the defective electrode sheet portion can be wound in the winder (150) without winding the normal electrode sheets. The electrode assembly (J3, J6, J8, J10 of FIG. 6) of this defective electrode sheet can be discharged to the defective storage port (S2).

[0314] At this time, the identification information (J3, J6, J8, J10) of the defective electrode assembly may be assigned based on the cut count value of the defective electrode sheet and the pattern number of the defective electrode sheet. That is, the ID of the defective electrode assembly is not associated with the pattern number of the non-defective electrode sheet. In this case, when the cut counter of the cutter for the non-defective electrode sheet operates (i.e., operates in a state where the electrode sheet is not present), the cut count value increases, and when the cut counter does not operate, the cut count value for the non-defective electrode sheet may not increase.

[0315] The process controller (170) or the controller or processor(s) associated with the battery manufacturing system (10 and 1000) corresponding to the embodiments of FIGS. 1 through 7 may include suitable logic, circuitry, interfaces, or code configured to perform any or all of the functions or operations of tracking, monitoring, and manufacturing electrodes, electrode assemblies, and batteries and generating roll maps by executing instructions stored in one or more memories or servers (e.g., 160, 180, 181). For example, the process controller (170) or the controller or processor associated with the battery manufacturing system (10 and 1000) may include, but is not limited to, a processor, a digital signal processor (DSP), a microprocessor, a microcontroller, a complex instruction set computing (CISC) processor, an application-specific integrated circuit (ASIC) processor, a reduced instruction set computing (RISC) processor, a very long instruction word (VLIW) processor, a state machine, a data processing unit, a graphics processing unit (GPU), and other processors or control circuits. Additionally or alternatively, the process controller (170) or the controller or processor(s) associated with the battery manufacturing system (10 and 1000) may be located on one or more server systems described in the aforementioned embodiments that may perform some or all of the functions or operations of tracking, monitoring, and manufacturing electrodes, electrode assemblies, and batteries and generating roll maps. The server(s) described according to embodiments of the present disclosure may include physical servers or cloud servers. In one embodiment, the server(s) may provide data and analysis results to the operator via various frameworks. The frameworks may include protocols that support data transmission to allow the display device (190) (e.g., see FIG. 1) to visualize the data via a user interface and provide updated visualizations when new data is calculated, for example, at the server (180).Protocols that support data transfer can use HTML, JavaScript, and / or JSON.

[0316] The roll map may be stored in a database, one of the servers described in the embodiments described above, or a separate storage medium. The database or storage medium may be, for example, memory. Multiple memories may be provided as needed. The memory may be volatile or non-volatile memory. Volatile memory may include random access memory (RAM), dynamic RAM (DRAM), static RAM (SRAM), etc. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically alterable ROM (EAROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, etc. The examples of memory listed above are merely examples and are not limited to these examples. Alternatively, the storage medium may be a hard disk, CD-ROM, USB memory, solid-state drive (SSD), or the like.

[0317] Roll maps and related data stored on storage media can be freely used for battery manufacturing, quality control, analysis and problem tracking.

[0318] Also described is a computer-readable medium having stored thereon instructions configured to cause one or more computers to perform one of the methods described herein. In one embodiment, the computer-readable medium may be non-transitory. The computer-readable medium may include volatile or non-volatile, removable or non-removable media implemented in any method or technology capable of storing information, such as computer-readable instructions, data structures, program modules, or other data. In general, the functions of the computing devices described in the present disclosure may be implemented as computing logic implemented in hardware or software instructions, which may be implemented in languages ​​such as C, C++, COBOL, or JAVA. TM , PHP, Perl, Python, Ruby, HTML, CSS, JavaScript, VBScript, ASPX, C# and other Microsoft .NET TM The computing logic may be written in a language and / or similar programming language. The computing logic may be written in an interpreted programming language or compiled into an executable program. In general, the functionality described in the present disclosure may be implemented as logic modules or circuits that can be duplicated, merged with other modules, or split into sub-modules to provide greater processing capabilities. The computing logic may be stored in any type of computer-readable medium (e.g., a non-transitory medium such as a memory or storage medium) or computer storage device and may be stored and executed by one or more general-purpose or special-purpose processors, thereby creating a special-purpose computing device configured to provide the functionality described in the present disclosure.

[0319] One or more aspects of FIGS. 1 through 7 may be incorporated into or combined with one or more aspects of the embodiments described herein. Furthermore, detailed descriptions of similar or identical elements already described may be omitted for the sake of brevity.

[0320] However, such omission is not a non-declaration or denial, and the description of this disclosure shall govern hereinafter, except where similar or identical elements already described are inconsistent with those set forth in this disclosure.

[0321] The applications and functions disclosed in the previous and following embodiments can be achieved by programming the process controller (170) or any controller or processor associated with the battery manufacturing system (10 and 1000) according to the present disclosure. That is, the process controller (170) or any controller or processor(s) associated with the battery manufacturing system 10 and 1000 can utilize a computer-readable medium having stored thereon instructions configured to cause one or more computers or processors to perform any of the methods described in the present disclosure, for example, in the previous and following embodiments.

[0322] Figure 7 is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment.

[0323] Referring to FIGS. 3 to 7, a first electrode sheet (ESN) having a pattern and a second electrode sheet (ESP) having a pattern are each unwound from a first electrode roll (ERN) and a second electrode roll (ERP) and moved toward a winder (150). In addition, a separator sheet is also unwound from a separator roll corresponding to each electrode roll and moved toward a winder (150).

[0324] The process controller (170) can operate an unwinder corresponding to each electrode roll and separator roll to move the electrode sheet and separator sheet.

[0325] The first electrode sheet (ESN) and the second electrode sheet (ESP) moving to the winder (150) can be inspected and measured by the above-described measuring device and / or inspection device. The measurement data and / or inspection data acquired by the measuring device and / or inspection device can be transmitted to the monitoring server (180) via the process controller (170).

[0326] Each electrode sheet that has been inspected and / or measured can be moved by a corresponding guide roll and joined to a separator sheet. In this process, the first electrode sheet (ESN) can be cut by the first cutter (140N) to a first winding length (W1), and the second electrode sheet (ESP) can be cut by the second cutter (140P) to a second winding length (W2) (step P110).

[0327] A first electrode sheet portion of a first winding length (W1) and a second electrode sheet portion of a second winding length (W2) are wound in a winder (150) with a separator interposed therebetween, thereby completing a jellyroll-shaped electrode assembly (EA) (step P120). The winder (150) may be equipped with a separate cutter for cutting the separator sheet. At this time, the first electrode sheet of the first winding length and the second electrode sheet of the second winding length may be wound together with a separator of a third winding length (L3) to manufacture the electrode assembly.

[0328] For the completed electrode assembly (EA), a predetermined identification number is assigned.

[0329] Identification information can be assigned to the electrode assembly based on the following i) and / or ii).

[0330] ⅰ) Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet

[0331] ⅱ) A first pattern number of a first electrode sheet corresponding to the first winding length and a second pattern number of a second electrode sheet corresponding to the second winding length.

[0332] The above cut count values ​​can be acquired by a cut counter equipped in a cutter, etc., and the cut count values ​​can be transmitted to a process controller (170), an identification information management server (160), or a monitoring server (180).

[0333] The pattern numbers or pattern indicators of the first and second electrode sheets can be acquired by the first and second pattern counters. The acquired pattern numbers or pattern indicators can be transmitted to the process controller (170), the identification information management server (160), or the monitoring server (180).

[0334] The identification information assigning device, which is a process controller (170) or an identification information management server (160) or a combination thereof, can assign virtual identification information (ID), for example, to the completed electrode assembly (EA) based on the cut count values ​​and / or pattern numbers or pattern indicators (step P130). The ID may be a virtual ID or a physical ID that can be provided on the surface of the electrode assembly (EA).

[0335] In this case, the step of acquiring first coordinate data (CD1) that can continuously indicate a position on a first electrode sheet moving between the first electrode roll and the winder, and second coordinate data that can continuously indicate a position on a second electrode sheet moving between the second electrode roll and the winder may be further included.

[0336] The above first and second coordinate data may be associated with at least one of the following.

[0337] ⅰ) Identification information of the above electrode assembly

[0338] ⅱ) Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet

[0339] ⅲ) The first pattern number or pattern indicator and the second pattern number or pattern indicator

[0340] The first coordinate data may include at least one of a start coordinate value and an end coordinate value of the first winding length, and the second coordinate data (CD2) may include at least one of a start coordinate value and an end coordinate value of the second winding length.

[0341] The identification information of the above electrode assembly (EA) may be associated with one or more of the following by the monitoring server (180) (step P140).

[0342] 1) A first pattern number or pattern indicator of the first electrode sheet and / or a second pattern number or pattern indicator of the second electrode sheet.

[0343] 2) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet

[0344] 3) Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet

[0345] 4) At least one of the start coordinate value and the end coordinate value of the first winding length, and the start coordinate value and the end coordinate value of the second winding length.

[0346] 5) Data regarding defects in the first electrode sheet and / or second electrode sheet or defects in the electrode assembly.

[0347] 6) First process event data associated with the first location data and / or second process event data associated with the second location data.

[0348] 7) Tray identification information of the tray on which the above electrode assembly is loaded

[0349] 8) Data regarding the loading position of the electrode assembly on the tray.

[0350] 9) Can identification information of the electrode can in which the above electrode assembly is accommodated.

[0351] Meanwhile, in order to save materials, if there is a defect in one of the first electrode sheet of the first winding length and the second electrode sheet of the second winding length, only the defective electrode sheet can be cut, and the cut defective electrode sheet can be wound together with the separator to be discharged as a defective electrode assembly.

[0352] In this case, the identification information of the defective electrode assembly can be provided based on the cut count value of the defective electrode sheet and the pattern number of the defective electrode sheet.

[0353] FIG. 8 illustrates a flowchart of an exemplary method (800) for manufacturing a battery according to aspects of the present disclosure. For example, the method (800) may be performed according to one or more embodiments and one or more systems described with reference to FIGS. 1 through 8 .

[0354] In step 802, the first electrode sheet may be cut into a first electrode portion having a first length. In step 804, the second electrode sheet may be cut into a second electrode portion having a second length. In step 806, the first electrode portion, the second electrode portion, and the separator between the first electrode portion and the first electrode portion may form an electrode assembly. In step 808, the electrode assembly may be assigned identification information according to: a cut count value of the first electrode sheet and / or a cut count value of the second electrode sheet; and / or a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

[0355] Steps 802 to 808 are exemplary, and other alternatives may be provided, such as one or more steps being added, one or more steps being removed, or one or more steps being provided in a different order, without departing from the scope of the claims of the present invention.

[0356] In another aspect, the method of manufacturing a battery may include one or more of the following features or steps.

[0357] The first electrode portion may include a first electrode coating portion included in the first pattern, and the second electrode portion may include a second electrode coating portion included in the second pattern. The second electrode coating portion may correspond to the first electrode coating portion. The first electrode sheet may include the first electrode coating portion included in the first pattern. The second electrode sheet may include a plurality of electrode coating portions. The plurality of electrode coating portions may be separate patterns. The second electrode sheet may include an uncoated portion positioned between two of the plurality of electrode coating portions. The separator may include a third length. The third length may be greater than the first length and the second length.

[0358] The first pattern indicator may indicate the position at which the first electrode sheet moves between the first electrode roll and the winder. The second pattern indicator may indicate the position at which the second electrode sheet moves between the second electrode roll and the winder. The method for manufacturing a battery may further include the following.

[0359] A step of acquiring first coordinate data indicating a position at which a first electrode sheet moves between a first electrode roll and a winder and / or second coordinate data indicating a position at which a second electrode sheet moves between a second electrode roll and a winder. The first coordinate data and / or the second coordinate data may be associated with one or more of the following:

[0360] i) identification information of the electrode assembly;

[0361] ii) the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet; or

[0362] iii) First pattern indicator and / or second pattern indicator.

[0363] The first coordinate data may include at least one of a start coordinate value or an end coordinate value of the first length. The second coordinate data may include at least one of a start coordinate value or an end coordinate value of the second length. The identification information of the electrode assembly may be associated with at least one of the following:

[0364] 1) A first pattern indicator of the first electrode sheet and a second pattern indicator of the second electrode sheet;

[0365] 2) Lot identification information of the first electrode sheet and lot identification information of the second electrode sheet;

[0366] 3) At least one of the start coordinate value and the end coordinate value of the first length and the start coordinate value and the end coordinate value of the second length;

[0367] 4) Data on defects in the first electrode sheet, second electrode sheet or electrode assembly;

[0368] 5) First process event data associated with first location data and second process event data associated with second location data;

[0369] 6) Tray identification information of the tray on which the electrode assembly is loaded;

[0370] 7) Position data of the loading position of the electrode assembly on the tray; or

[0371] 8) Can identification information of the electrode can containing the electrode assembly.

[0372] This method may also include:

[0373] A step of determining whether at least one of the first electrode portion or the second electrode portion includes a defective portion;

[0374] If it is determined that at least one of the first electrode portion or the second electrode portion contains a defective portion:

[0375] A step of cutting off a defective portion; winding the defective portion with a separator to form a defective electrode assembly; and discharging the defective electrode assembly.

[0376] The systems, methods, and batteries described with reference to FIGS. 1 through 8 of the present disclosure can improve upon existing battery manufacturing, monitoring, and tracking technologies. That is, the systems (10, 1000), battery(s), processes, and methods of the present disclosure aim to improve upon existing battery technologies, and can be practically applied to the fields of battery manufacturing, monitoring, and tracking technologies by utilizing the systems (10, 1000) and the methods, processes, and functions disclosed with reference to FIGS. 1 through 8 of the present disclosure. Thus, for example, the combined steps of the methods described with reference to FIGS. 7 and 8 can improve quality for traceability and data integrity in battery manufacturing processes using patterned electrodes in a non-conventional manner. Consequently, the manufacturing reliability of processed products, semi-finished products, and finished products can be improved throughout the battery manufacturing process.

[0377] In general, any process discussed in the present disclosure that is understood to be computer-implementable, for example, the processes illustrated with reference to FIGS. 1-8 and the systems and / or interfaces described in connection with FIGS. 1-8, can be performed or implemented by one or more processors of a computer system. A process or process step performed by one or more processors may also be referred to as an operation. The one or more processors may be configured to perform such a process by accessing instructions (e.g., software or computer-readable code) that, when executed by the one or more processors, cause the one or more processors to perform the process. The instructions may be stored in a memory of the computer system. The processor may be a central processing unit (CPU), a graphics processing unit (GPU), or another type of processing device.

[0378] The computer device or system described with reference to FIGS. 1 through 8, or any other system that performs the task of tracking and monitoring manufacturing data of one or more batteries and / or battery components, may include one or more computing devices. If one or more processors of the computer system are implemented as multiple processors, the multiple processors may be contained in a single computing device or distributed across multiple computing devices. If the computer system includes multiple computing devices, the memory of the computer system may include a corresponding memory of each computing device among the multiple computing devices.

[0379] According to the method of the present invention, the quality of the electrode and the electrode assembly including the electrode can be tracked not only during the winding process, but also between the winding process and its pre- and post-processes, using the electrode assembly identification information. This improves the manufacturing reliability of workpieces, semi-finished products, and finished products throughout the entire battery manufacturing process.

[0380]

[0381] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

[0382]

[0383] (Explanation of symbols)

[0384] 10, 1000: Battery manufacturing system

[0385] 111N, 112N: 1st position measuring device

[0386] 111P:112P: Second position measuring device

[0387] 120N: 1st pattern counter

[0388] 120P: 2nd Pattern Counter

[0389] 130: Measuring instruments and / or testers

[0390] 140N: 1st cutter

[0391] 140P: Second cutter

[0392] 150: Winder

[0393] 160: Identification Information Management Server

[0394] 170: Process Controller

[0395] 180: Server

Claims

1. A first cutter configured to cut a first electrode sheet into a first electrode portion having a first length; A second cutter configured to cut the second electrode sheet into a second electrode portion having a second length; A winder configured to form an electrode assembly by winding the first electrode portion, the second electrode portion, and the separator between the first electrode portion and the second electrode portion; and Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet A battery manufacturing system comprising an identification information providing device configured to provide identification information to the electrode assembly based on a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

2. In paragraph 1, Controlling the first cutter to cut the first electrode sheet into a first electrode portion with a first length, A battery manufacturing system further comprising a process controller configured to control a second cutter to cut the second electrode sheet into a second electrode portion of a second length.

3. In paragraph 2, A battery manufacturing system wherein the process controller is configured to: Determining whether at least one of the first electrode portion or the second electrode portion includes a defective portion; and When it is determined that at least one of the first electrode portion or the second electrode portion includes a defective portion, the defective portion is cut, the defective portion is wound with a separator to form a defective electrode assembly, and the defective electrode assembly is discharged.

4. In paragraph 1, A first pattern counter configured to count one or more patterns on the first electrode sheet moving between the first electrode roll and the winder and to assign the first pattern indicator to one or more patterns on the first electrode sheet; A battery manufacturing system further comprising a second pattern counter configured to count one or more patterns on the second electrode sheet moving between the second electrode roll and the winder and to assign the second pattern indicator to one or more patterns on the second electrode sheet.

5. In paragraph 1, A first position measuring device configured to acquire first coordinate data indicating one or more positions of a first electrode sheet moving between a first electrode roll and a winder; A battery manufacturing system further comprising a second position measuring device configured to acquire second coordinate data indicating one or more positions of a second electrode sheet moving between a second electrode roll and a winder.

6. In paragraph 1, A process controller configured to perform one or more processes between a first electrode roll including a first electrode sheet and a winder and between a second electrode roll including a second electrode sheet and a winder; An identification information management server configured to execute data communications; or A battery manufacturing system comprising a combination of a process controller and an identification information management server.

7. In paragraph 5, At least one first electrode measuring device and / or inspector is provided between the first electrode roll and the winder, A battery manufacturing system, wherein at least one second electrode measuring device and / or inspector is provided between the second electrode roll and the winder.

8. In paragraph 1, A first electrode roll map including first position data of a first electrode sheet moving from the first electrode roll to the winder, and first process event data acquired according to the movement of the first electrode sheet and associated with the first position data; A battery manufacturing system further comprising a monitoring server configured to generate a second electrode roll map including second positional data of a second electrode sheet moving from a second electrode roll to the winder, and second process event data acquired according to the movement of the second electrode sheet and associated with the second positional data.

9. In paragraph 8, The above monitoring server is a battery manufacturing system that generates monitoring data by associating the identification information of the electrode assembly with one or more of the following. 1) A first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet 2) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet 3) At least one of the start coordinate value and the end coordinate value of the first length, and the start coordinate value and the end coordinate value of the second length. 4) Data regarding defects in the first electrode sheet and / or second electrode sheet or defects in the electrode assembly. 5) First process event data associated with the first location data and / or second process event data associated with the second location data. 6) Tray identification information of the tray on which the above electrode assembly is loaded 7) Data regarding the loading position of the electrode assembly on the tray. 8) Can identification information of the electrode can in which the above electrode assembly is accommodated 10. A step of cutting the first electrode sheet into a first electrode portion having a first length; A step of cutting a second electrode sheet into a second electrode portion having a second length; A step of forming an electrode assembly by winding the first electrode portion, the second electrode portion, and the separator between the first electrode portion and the second electrode portion; and Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet and / or A battery manufacturing method comprising a step of assigning identification information to the electrode assembly based on a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

11. In paragraph 10, The first electrode portion includes a first electrode coating portion belonging to the first pattern, A battery manufacturing method wherein the second electrode portion belongs to a second pattern and includes a second electrode coating portion corresponding to the first electrode coating portion.

12. In paragraph 10, The first electrode portion includes a first electrode coating portion belonging to the first pattern, The second electrode portion includes a plurality of electrode coating portions, each of the electrode coating portions belonging to a different pattern, A method for manufacturing a battery, wherein the second electrode portion includes an electrode uncoated portion between two electrode coated portions.

13. In paragraph 10, The above separator has a third length, A method for manufacturing a separator and a battery, wherein the third length is greater than the first length and the second length.

14. In paragraph 10, The first pattern indicator indicates the position of the first electrode sheet moving between the first electrode roll and the winder, A battery manufacturing method in which the second pattern indicator indicates the position of the second electrode sheet moving between the second electrode roll and the winder.

15. In paragraph 10, Further comprising a step of acquiring first coordinate data indicating a position of a first electrode sheet moving between the first electrode roll and the winder, and second coordinate data indicating a position of a second electrode sheet moving between the second electrode roll and the winder, A battery manufacturing method wherein the first and / or second coordinate data is associated with at least one of the following. ⅰ) Identification information of the above electrode assembly; ⅱ) the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet; or ⅲ) The first pattern indicator and / or the second pattern indicator 16. In paragraph 15, The first coordinate data includes at least one of the start coordinate value and the end coordinate value of the first length, A battery manufacturing method wherein the second coordinate data includes at least one of a start coordinate value and an end coordinate value of the second length.

17. In paragraph 10, A battery manufacturing method wherein the identification information of the above electrode assembly is associated with one or more of the following. 1) A first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet 2) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet 3) At least one of the start coordinate value and the end coordinate value of the first length, and the start coordinate value and the end coordinate value of the second length. 4) Data on defects in the first electrode sheet and second electrode sheet or defects in the electrode assembly. 5) First process event data associated with the first location data and second process event data associated with the second location data 6) Tray identification information of the tray on which the above electrode assembly is loaded 7) Data regarding the loading position of the electrode assembly on the tray. 8) Can identification information of the electrode can in which the above electrode assembly is accommodated 18. In paragraph 10, A step of determining whether at least one of the first electrode portion or the second electrode portion includes a defective portion; and A battery manufacturing method further comprising the steps of: cutting the defective portion, winding the defective portion with a separator to form a defective electrode assembly, and discharging the defective electrode assembly, when it is determined that at least one of the first electrode portion or the second electrode portion includes a defective portion.

19. One or more non-transitory computer-readable media containing instructions for manufacturing a battery that can be executed by a processor, the instructions comprising: A step of cutting a first electrode sheet into a first electrode portion having a first length; A step of cutting a second electrode sheet into a second electrode portion having a second length; A step of forming an electrode assembly by winding the first electrode portion, the second electrode portion, and the separator between the first electrode portion and the second electrode portion; and Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet and / or A step of assigning identification information to the electrode assembly based on a first pattern indicator of the first electrode sheet and / or a second pattern indicator of the second electrode sheet.

20. In paragraph 19, The first electrode portion includes a first electrode coating portion belonging to the first pattern, A medium in which the second electrode portion belongs to the second pattern and includes a second electrode coating portion corresponding to the first electrode coating portion.

21. Housing; A first electrode including a first indicator corresponding to a first pattern of a first electrode sheet; A second electrode including a second indicator corresponding to a second pattern of a second electrode sheet; and A separator between the first electrode and the second electrode; The first electrode, the second electrode, and the separator form an electrode assembly, and the electrode assembly is accommodated in the housing, The electrode assembly includes a third indicator including identification information of the electrode assembly, A battery wherein the housing includes a fourth indicator corresponding to the third indicator.

22. In paragraph 21, A battery wherein the first indicator is marked on the surface of the first electrode.

23. In paragraph 21, The above first pattern includes a coated portion and an uncoated portion of the first electrode sheet, A battery wherein the first electrode comprises at least a portion of the coating portion of the first electrode sheet.

24. In paragraph 21, The fourth indicator above is a battery corresponding to the identification information of the housing.

25. In paragraph 21, The second pattern is a battery including a coating portion of a second electrode sheet.

26. In paragraph 21, The above separator includes a fifth indicator, The above fifth indicator is a battery marked on the surface of the separator.

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