Battery manufacturing method and battery manufacturing system

Abstract

According to exemplary embodiments of the present invention, a method for manufacturing a battery is provided. The above manufacturing method may include: a first step of acquiring pattern indicator data indicating the position of the pattern on an electrode sheet, as well as measurement data and / or inspection data, for an electrode sheet having a pattern in which coated and uncoated portions are repeatedly arranged; a second step of associating the pattern indicator data with the measurement data and / or inspection data; and a third step of generating inter-process monitoring data by associating the pattern indicator data with each of the multiple processes so as to correspond to the same physical position on the electrode sheet.

Description

[[Technical Field]]

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

[0002] The present application claims the benefit of priority based on Korean Patent Application No. 10-2024-0013083 filed on January 29, 2024, U.S. Patent Application No. 18 / 606,685 filed on March 15, 2024, and Korean Patent Application No. 10-2025-000503 filed on January 13, 2025. All contents disclosed in the documents of said patent applications are incorporated herein as part of the present specification. [[Background Art]]

[0003] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries are widely used as energy sources for various cordless devices such as handsets, laptop computers, and cordless vacuum cleaners. In recent years, due to improvements in energy density and economies of scale, the manufacturing cost per unit capacity of secondary batteries has been dramatically reduced, and as the cruising range of battery electric vehicles (BEV) has increased to a level comparable to that of fuel vehicles, the main applications of secondary batteries have shifted from mobile devices to mobility.

[0004] Secondary batteries are manufactured through an electrode process, an assembly process, and an activation process. Among these, the electrode process is the most core process that determines the yield and performance of battery cells. The electrode process may include a coating process, a roll pressing process, and a slitting process. In the coating process, an active material and an insulating material can be coated onto the surface of a current collector. In the roll pressing process, the electrode can be pressed by pressure rolls. The roll pressing process can determine the density, performance, and surface quality of the electrode. In the slitting process, the electrode can be cut into a plurality of electrodes according to the design of the battery cell. [[Prior Art Documents]] [[Patent Documents]]

[0005] [Patent Document 1] Korean Published Patent Publication No. 10-2022-0134303 [Overview of the project] [Problems that the invention aims to solve]

[0006] The present invention aims to provide a battery manufacturing method and a battery manufacturing system that improve quality traceability and data integrity in a battery manufacturing process using patterned electrodes. [Means for solving the problem]

[0007] An exemplary battery manufacturing method of the present invention for solving the above problems is: A first step of acquiring pattern indicator data indicating the position of the pattern on an electrode sheet, as well as measurement data and / or inspection data, for an electrode sheet having a pattern in which coated and uncoated portions are repeatedly arranged, The second step is to associate the above pattern indicator data with the above measurement data and / or inspection data, The method may include a third step of generating inter-process monitoring data by associating the pattern indicator data for each of the multiple processes so that it corresponds to the same physical position on the electrode sheet.

[0008] The pattern indicator data for each process can be associated with at least one of the following: 1) As the positions of the start and end of the electrode sheet are reversed between processes, the reversed pattern indicator data is made to correspond between processes. 2) As the corresponding surfaces of the electrode sheet are reversed between processes according to the winding and unwinding directions of the electrode sheet, the reversed pattern indicator data is made corresponding between processes. 3) The pattern indicator data, which changes due to electrode sheet loss occurring during and / or between each process, is made to correspond between processes.

[0009] The operation described in 3) above may include the following steps: A step of displaying pattern indicator data that includes at least one portion removed due to loss of the electrode sheet as absolute pattern indicator data; A step of displaying as relative pattern indicator data the pattern indicator data that excludes at least one portion removed due to loss of the electrode sheet; A step of correlating absolute pattern indicator data with relative pattern indicator data, which does not include at least one portion removed due to the loss of the electrode sheet.

[0010] The operation described in 3) above may include a step of associating relative pattern indicator data with cell IDs in the final step of the process.

[0011] The first step described above further includes the step of obtaining coordinate data that can continuously indicate the position of the electrode sheet, The second step described above further includes associating the coordinate data with the pattern indicator data and the measurement data and / or inspection data, The third step described above may further include generating monitoring data based on the pattern indicator data, the coordinate data, and the measurement and / or inspection data associated with the pattern indicator data and the coordinate data.

[0012] The third step described above may include at least one of the following steps: i) A step of compressing the measurement data and / or inspection data based on the pattern indicator data, the coordinate data, and the measurement data and / or inspection data. ii) A step of generating inter-process monitoring data by correlating pattern indicator data from each process and / or coordinate data from each process to correspond to the same physical position on the electrode sheet.

[0013] The step of compressing the above measurement data and / or inspection data is: The procedure may include at least one of the following steps: calculating a representative value and / or determining a decision value for the measured and / or inspected values ​​of the respective measurement data and / or inspected data collected for the pattern indicator and coordinate data of the start and end portions of the electrode sheet described above.

[0014] The pattern indicator data for each process or the coordinate data for each process can be associated by at least one of the following: 1) As the positions of the start and end of the electrode sheet are reversed between processes, the reversed pattern indicator data and / or coordinate data are made to correspond between processes. 2) The pattern indicator data and / or coordinate data, which change due to electrode sheet loss occurring during and / or between each process, are made to correspond between processes. 3) As the corresponding surfaces of the electrode sheet are reversed between processes due to the winding and unwinding directions of the electrode sheet, the reversed pattern indicator data and / or coordinate data are made corresponding between processes.

[0015] The pattern indicator data, coordinate data, and measurement and / or inspection data described above can be correlated with each other based on the same time or time interval.

[0016] The above monitoring data is A roll map for each process, including pattern indicator data for each process and measurement and / or inspection data for each process associated with the pattern indicator data, and The roll map may include at least one of a roll map in which pattern indicator data of each process are displayed to correspond to each other so as to correspond to the same physical position of an electrode sheet.

[0017] According to another aspect of the present invention, there is provided a battery manufacturing system, a first position measuring instrument configured to generate pattern indicator data indicating positions of a pattern on an electrode sheet having a pattern in which coated parts and uncoated parts are repeatedly arranged; a measuring instrument and / or an inspector configured to collect measurement data and / or inspection data for the electrode sheet; one or more processors configured to generate monitoring data for battery manufacturing based on said pattern indicator data and the measurement data and / or inspection data associated with said pattern indicator data, wherein said one or more processors may be configured to cause said pattern indicator data for each of a plurality of processes to correspond to each other to generate inter-process monitoring data so as to correspond to the same physical position of the electrode sheet.

[0018] said one or more processors may be configured to correspond the pattern indicator data of each process based on at least one of the following operations. 1) As the positions of the start portion and the end portion of the electrode sheet are reversed between processes, the reversed pattern indicator data is made to correspond between processes. 2) As the corresponding surface of the electrode sheet is reversed between processes in accordance with the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data is made to correspond between processes. 3) The pattern indicator data that changes due to electrode sheet loss occurring during and / or between processes is made to correspond between processes.

[0019] In the operation of 3), said one or more processors: The pattern indicator data including at least one portion removed due to the loss of the electrode sheet is displayed as absolute pattern indicator data; The pattern indicator data that excludes at least one portion removed due to the loss of the electrode sheet is displayed as relative pattern indicator data; The system can be configured to associate absolute pattern indicator data with relative pattern indicator data, excluding at least one portion removed due to the loss of the electrode sheet.

[0020] One or more of the above-mentioned processors can be configured to associate relative pattern indicator data with cell IDs in the final step of the process in the operation described in 3) above.

[0021] The above system may further include a second position measuring instrument configured to generate coordinate data that can continuously indicate the position of the electrode sheet. One or more of the above processors The above coordinate data is associated with the above pattern indicator data and the above measurement data and / or inspection data. The system can be configured to generate the monitoring data based on the pattern indicator data, the coordinate data, and the measurement and / or inspection data associated with the pattern indicator data and the coordinate data.

[0022] The one or more processors described above can be configured to produce at least one of the following: i) Compressed measurement and / or inspection data based on the above pattern indicator data, the above coordinate data, and the above measurement and / or inspection data; ii) Inter-process monitoring data generated by associating the pattern indicator data of each process with the same physical position on the electrode sheet, and / or with the coordinate data of each process.

[0023] One or more of the above processors The system can be configured to generate compressed measurement and / or inspection data by at least one of the following steps: calculating a representative value and / or determining a judgment value for the measurement and / or inspection data collected for the pattern indicator and coordinate data of the start and end portions of the electrode sheet described above.

[0024] One or more of the above-mentioned processors can be configured to associate the pattern indicator data, coordinate data, and measurement data and / or inspection data with each other based on the same time or time interval.

[0025] The above system may further include a controller that controls the movement of the electrode sheet, and the association between the pattern number data and the measurement data and / or inspection data may be performed by the measuring instrument and / or inspection instrument, or by the controller.

[0026] The above system may further include a controller that controls the movement of the electrode sheet. The association between the pattern number data and coordinate data and the measurement data and / or inspection data can be performed by the measuring instrument and / or inspection instrument or the controller.

[0027] One or more of the above processors can be configured to embody at least one of the following server functions: i) A role map generation server that generates a role map for each process, including pattern indicator data for each process and measurement and / or inspection data for each process associated with the pattern indicator data. ii) A roll map generation server that generates a roll map as inter-process monitoring data, wherein the pattern indicator data for each process corresponds to each other so as to correspond to the same physical position on the electrode sheet. [Effects of the Invention]

[0028] According to the present invention, monitoring data for battery manufacturing can be generated using positional data (pattern indicator data, coordinate data) that reflects the pattern position of an electrode having a pattern. Therefore, the battery manufacturing process can be monitored to match the condition of the actual pattern electrode, improving quality traceability and data integrity.

[0029] The present invention can also compress measurement data and / or inspection data to generate monitoring data. Therefore, the server resources allocated to generating and storing monitoring data can be reduced.

[0030] The present invention also enables the generation of inter-process monitoring data by associating pattern indicator data acquired in each process with the position of the same physical electrode sheet. This inter-process monitoring data allows for intuitive understanding of changes in electrode length and quality between multiple processes, corresponding to the electrode's position. Furthermore, it enables quick and easy tracking of any quality issues with the electrodes.

[0031] The effects obtained from exemplary embodiments of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly derived and understood by a person of ordinary skill in the art to which the exemplary embodiments of this disclosure belong, from the following description. That is, unintended effects associated with carrying out exemplary embodiments of this disclosure can also be derived by a person of ordinary skill in the art from exemplary embodiments of this disclosure. [Brief explanation of the drawing]

[0032] [Figure 1] An exemplary embodiment of a battery manufacturing system is shown. [Figure 2] A visualized roll map and patterned electrodes are shown. [Figure 3] This is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment. [Figure 4] This shows a roll map of pattern electrodes arranged over time, based on the loading amount measurement data. [Figure 5] Inter-process monitoring data generated by a battery manufacturing method according to an exemplary embodiment is shown. [Figure 6] This is a schematic diagram showing that the corresponding surfaces of the electrode sheet are reversed depending on the unwinding and winding directions of the electrode sheet. [Figure 7] This is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment. [Figure 8] This shows a roll map of a pattern electrode with a pattern indicator and sub-pattern indicators displayed. [Figure 9] This is an example of a roll map showing pattern indicator data and coordinate data on a pattern electrode. [Figure 10] Inter-process monitoring data generated by a battery manufacturing method according to an exemplary embodiment is shown. [Figure 11] An exemplary embodiment of a battery manufacturing system is shown. [Modes for carrying out the invention]

[0033] Preferred embodiments of the present invention will now be described in detail with reference to the attached drawings. As a premise, terms and words used herein and in the claims should not be interpreted in a manner limited to their general or dictionary meanings, but rather in a manner consistent with the technical spirit of the present invention, based on the principle that inventors may appropriately define the concepts of terms in order to best describe their own invention.

[0034] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the present invention; thus, there may be a variety of equivalents and modifications that can be substituted for them at the time of filing.

[0035] Furthermore, in describing the present invention, if it is determined that a specific description of a related known configuration or function may obscure the gist of the present invention, such detailed description will be omitted.

[0036] The embodiments of the present invention are provided to give a more complete explanation to those skilled in the art; therefore, the shapes and sizes of the components in the drawings may be exaggerated, omitted, or shown schematically for the sake of clarity. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes and proportions.

[0037] Figure 1 shows a battery manufacturing system 10 according to an exemplary embodiment.

[0038] Referring to Figure 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 intermediary server (Event integration facility: EIF) 1010, a server system 200, and a display device 190.

[0039] The battery manufacturing system 10 can be configured to manufacture battery cells (e.g., cylindrical battery cells, prismatic battery cells, or pouch cells) by performing a series of roll-to-roll processes. Electrode sheets unwinded from the input electrode rolls can be processed by one of the following: the die coater of the coating apparatus 11, the pressure rolls of the roll pressing apparatus 12, and the slitting knife of the slitting apparatus 13. The processed electrode sheets can then be wound onto the electrode rolls. Thus, the processing of the coating apparatus 11, the roll pressing apparatus 12, and the slitting apparatus 13 for producing battery electrodes can be called a roll-to-roll process. The winding apparatus 14 can wind together a first electrode sheet (e.g., a negative electrode sheet) unwinded from a first electrode roll (e.g., a negative electrode roll), a second electrode sheet (e.g., a positive electrode sheet) unwinded from a second electrode roll (e.g., a positive electrode roll), and one or more separator sheets unwinded from one or more separator rolls.

[0040] The intermediary server (EIF) 1010 may be a device for communication between the process controller of the manufacturing equipment and the server system 200. This allows process event data generated in the coating equipment 11, roll pressing equipment 12, slitting equipment 13, and winding equipment 14 to be received by the intermediary server (EIF) 1010, and the received process event data to be transmitted to the server system 200.

[0041] If necessary, each process controller may communicate directly with the server system 200. This allows process event data generated in the coating device 11, roll pressing device 12, slitting device 13, and winding device 14 to be transmitted to the server system 200.

[0042] The server system 200 can generate monitoring data for battery manufacturing. Typically, the monitoring data may include a roll map containing process event data. The roll map data may include data representing process events and coordinate values ​​matched with the above data. The coordinate values ​​may indicate positions on electrodes. The server system 200 can transmit visualization commands to the display device 190, which can visualize the roll map and display the visualized roll map VRM.

[0043] The server system 200 can generate and save roll maps for each process (for example, a coating process, a roll pressing process, or a slitting process).

[0044] A roll map can be a type of simulated electrode that replicates a moving real electrode (for example, a real electrode moving between an unwinder and a rewinder).

[0045] Referring again to Figure 1, the electrode assemblies manufactured by winding in the winding device 14 are transported and can be housed in a case such as a can 15. The can may be assigned a can ID, which is a type of battery cell ID. Therefore, historical data of battery cell manufacturing can be retrieved based on the can ID.

[0046] Figure 2 shows the visualized roll map and patterned electrodes.

[0047] In Figure 2, arrow X indicates the longitudinal direction (travel direction) of the electrode (roll map), and arrow Y indicates the width direction of the electrode (roll map).

[0048] The visualized roll map VRM in Figure 2(a) can include multiple visualization segments VS1, VS2, VS3, VS4, VS5, and VS6, corresponding to multiple sections of the electrode sheet. Each of the multiple visualization segments VS1, VS2, VS3, VS4, VS5, and VS6 can include a start coordinate, an end coordinate, and a color.

[0049] Representative values ​​of the measurement data CMD associated with the coordinates of visualization intervals VS1, VS2, VS4, and VS6 can be displayed in color C1, representative values ​​of the measurement data CMD associated with the coordinates of visualization interval VS3 can be displayed in color C2, and representative values ​​of the measurement data CMD associated with the coordinates of visualization interval VS5 can be displayed in color C3.

[0050] Color C1 indicates that the representative values ​​for visualization intervals VS1, VS2, VS4, and VS6 are normal; color C2 indicates that the representative value for visualization interval VS3 is excessive; and color C3 indicates that the representative value for visualization interval VS3 is very excessive. Color C4 indicates that the representative value is insufficient; and color C5 indicates that the representative value is very insufficient.

[0051] Thus, since a roll map can represent the position of electrodes using coordinates and visualize measurement data corresponding to each position (for example, electrode slurry loading amount data), the efficiency of electrode production management can be improved by using the roll map and the data it contains.

[0052] Figure 2(b) shows a patterned electrode having a pattern in which coated and uncoated portions are repeatedly arranged along the longitudinal direction.

[0053] In a subsequent process, the pattern electrode is slit in the width direction with respect to the uncoated portion 1 between the coated portions 2. The slit coated portion 2 can be laminated with electrode coated portions of other polarities and separators to form an electrode assembly, or it can be wound together with electrode coated portions of other polarities and separators to form an electrode assembly in the form of a jelly roll.

[0054] In particular, pattern electrodes used for small batteries can be slit in the width direction and also slit along the longitudinal direction of the pattern electrode to form multiple electrode lanes L1 to L20.

[0055] Unlike conventional electrodes where the coating is continuously formed along the longitudinal direction, pattern electrodes have the coating formed intermittently. Therefore, a roll map method like that shown in Figure 2(a), which continuously indicates the longitudinal position of the electrode using length coordinates, may not be suitable for pattern electrodes. For example, the uncoated portion of a pattern electrode has a measured value of zero, such as the loading amount, and is not a significant portion that affects the actual battery performance. However, there is little need to connect the measured data with coordinates and display it in detail for such portions. Furthermore, in pattern electrodes, the electrode assembly is manufactured according to the length and width of the coated portion 2 included in the pattern. That is, electrode production performance processing is aggregated to the coated portion 2 or the pattern quantity including the coated portion 2. Thus, in pattern electrodes, electrodes are produced and managed based on the pattern, and position data needs to be assigned according to the characteristics of pattern electrodes where the coated and uncoated portions are intermittently coated. The present invention provides a battery manufacturing method and a battery manufacturing system that can generate monitoring data based on pattern indicator data, which is position data suitable for such pattern electrodes.

[0056] (First Embodiment) Figure 3 is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment.

[0057] Figure 4 shows a roll map of the pattern electrodes arranged over time with loading amount measurement data.

[0058] Figure 5 shows inter-process monitoring data generated by a battery manufacturing method according to an exemplary embodiment.

[0059] Figure 6 is a schematic diagram showing that the corresponding surfaces of the electrode sheet are reversed depending on the unwinding and winding directions of the electrode sheet.

[0060] Referring to Figure 3, the battery manufacturing method of the present invention includes a first step (P110) of acquiring pattern indicator data indicating the pattern position on the electrode sheet and measurement data and / or inspection data for the electrode sheet when the electrode sheet having a pattern in which coated and uncoated portions are repeatedly arranged moves through a plurality of steps.

[0061] As described above, in the multiple processes for producing patterned electrodes (coating, roll pressing, slitting, etc.), the electrode sheet can be moved along its longitudinal direction. The electrode sheet can be moved between an unwinder and a rewinder in each process. In this case, a first electrode roll on which the electrode sheet is wound can be loaded into the unwinder. The electrode sheet unwound from the unwinder can undergo predetermined processing and then be moved and wound into a rewinder to become a second electrode roll. Alternatively, the electrode sheet can be moved along its longitudinal direction by a conveyor or other driving means.

[0062] One pattern can refer to one coated portion 2 and one uncoated portion 1 adjacent to the coated portion. When a pattern indicator is assigned by considering only the coated portion or the uncoated portion as a pattern, the overall state of the pattern electrode cannot be fully represented. Referring to Figure 2(b), the uncoated portions 1 are located on both sides of one coated portion 2. Therefore, one pattern can include one coated portion and one uncoated portion, or one coated portion and the other uncoated portion. The pattern indicator can be obtained by counting so that the pattern number increases or decreases, or it can be identified by letters, characters, symbols, codes, or combinations of numbers and letters.

[0063] The pattern indicator data can be obtained by counting so that the pattern indicator increases or decreases for each of the above patterns.

[0064] For example, pattern indicator data may include a pattern number assigned to each pattern. This pattern number can be counted, for example, by a pattern counter. Therefore, the pattern indicator data can be obtained by a pattern counter. Each counted pattern number represents the position of a pattern on a moving electrode sheet. Thus, a pattern counter can be a position measuring instrument that measures the position of a pattern electrode. When recognizing the start and end of a pattern, a pattern counter can count the pattern number of one pattern. However, it should be understood that a pattern counter can count pattern numbers associated with multiple patterns. A pattern counter counts pattern numbers intermittently; that is, a pattern counter can count pattern numbers for one pattern or multiple patterns. In this specification, a pattern counter that measures intermittent positions (pattern numbers) can be referred to as a first position measuring instrument. As will be discussed later, an encoder or the like that measures continuous positions (coordinates) can be referred to as a second position measuring instrument.

[0065] The length of a single pattern can vary depending on the type and model of the pattern electrode. The length of a single pattern defined for a particular pattern electrode can be called the set pattern pitch. In other words, the set pattern pitch can be defined as the sum of the length of one set coated area and the length of one set uncoated area.

[0066] If the length (pitch) of one pattern differs from the set pattern pitch, it becomes a pattern with an abnormal pitch. According to one embodiment of the present invention, the step of comparing the set pattern pitch with the length of each pattern to determine a pattern with an abnormal pitch may be further included.

[0067] The length of each of the above patterns and / or the lengths of the coated and uncoated portions included in each pattern can be derived by multiplying the difference in the boundary detection time points between the coated and uncoated portions included in each pattern by the moving speed of the electrode sheet.

[0068] The pattern counter described above may include a pitch sensor and a trigger board. The pitch sensor can measure the length of each pattern, i.e., the pitch of each pattern.

[0069] According to exemplary embodiments, the pitch sensor may be a photoelectric sensor or may include a photoelectric sensor. The photoelectric sensor consists of a light-emitting unit and a light-receiving unit. When the light emitted by the light-emitting unit is blocked or reflected by the object to be detected, the amount of light reaching the light-receiving unit changes. The light-receiving unit detects this change and converts it into an electrical signal for output. The amount of light emitted from the light-emitting unit that reaches the light-receiving unit changes with respect to the boundary between the coated portion 2 and the uncoated portion 1 on the pattern electrode. As a result, a pattern counter equipped with a pitch sensor can distinguish between the coated portion and the uncoated portion on the pattern electrode. An optical fiber sensor can be used as the photoelectric sensor. An optical fiber sensor uses an optical fiber instead of a lens in a photoelectric sensor, and since the optical fiber, which is the detection part, has no electrical parts at all, it has advantages such as excellent environmental resistance, including noise immunity.

[0070] When the photoelectric sensor equipped in the pitch sensor detects the boundary between the coated and uncoated areas, the time of boundary detection can also be recorded simultaneously. Therefore, by multiplying the difference (time) in the boundary detection times between the coated and uncoated areas in each pattern by, for example, the moving speed of the electrode sheet, the distance between the boundaries can be determined. The pitch sensor or the pattern counter may be equipped with a calculation unit for calculating the above time and speed.

[0071] Referring to Figure 4, the process of detecting abnormal pitch patterns using a pattern counter is explained.

[0072] As the electrode sheet travels in the longitudinal direction X (travel direction (MD)), the pattern counter can sense the boundary lines BL1, BL2, and BL3 between the coated and uncoated areas.

[0073] BL1 is the boundary line of the first coated portion 2 below the first uncoated portion 1 at the top of Figure 4. BL2 is the boundary line between the first coated portion and the second uncoated portion below it. BL3 is the boundary line between the second coated portion and the second coated portion below it.

[0074] For example, a pattern counter can count by incrementing the pattern number by 1 each time it detects BL1 and BL3 in a given pattern.

[0075] The pattern counter can determine the length of the first coated area by multiplying the difference (time) between the detection time of BL1 and the detection time of BL2 by the movement speed of the electrode sheet.

[0076] The pattern counter can determine the length of the second uncoated portion by multiplying the difference (time) between the detection time of BL2 and the detection time of BL3 by the movement speed of the electrode sheet.

[0077] The pattern counter can determine the length (pitch) of the first pattern (#1) by multiplying the difference (time) between the detection time at BL1 and the detection time at BL3 by the movement speed of the electrode sheet. Using the same method, the pattern counter can determine the length of the second pattern (#2).

[0078] Furthermore, by comparing the length of the pattern described above with the set pattern pitch PP, patterns with abnormal pitches (lengths) can be identified. In Figure 4, PPx represents a pattern with an abnormal pitch smaller than the set pattern pitch PP. PPy represents a pattern with an abnormal pitch larger than the set pattern pitch PP. For example, patterns with a large difference from the set pattern pitch can be determined to be abnormal patterns. The electrode portion of the abnormal pattern can be removed in a subsequent process.

[0079] 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. That is, the trigger board can increment the count value for each length of the received pattern. The trigger board can increment the BCD (Binary Coded Decimal) code by 1 each time the count value for each pattern length increases. The trigger board can convert the generated count values ​​for each pattern length into BCD code form and transmit them to the controllers of each process or the server of the battery manufacturing system. The pattern counter (trigger board) can count so that the pattern indicator increases with each pattern (so-called ascending order), or so that the pattern indicator decreases with each pattern (so-called descending order). However, the counting method is not limited to these. Any method that can count the patterns so that their location can be identified is sufficient. The pattern indicator can be a number, letter, character, symbol, code, and / or a combination of numbers and letters.

[0080] Electrode Spec Data (ESD) can include electrode sheet model information, recipe, and pattern pitch. It can also include various details related to electrode sheet processing, such as the number of lots processed in the current process, the number of coating lanes formed on the electrode sheet, process conditions including temperature, humidity, and pressure, and process parameters including electrode sheet movement speed, coating die discharge rate, and pressure of the pressure roll. The ESD can be stored in a controller or server system for each process. A pattern counter can download information about the set pattern pitch from the controller or server system to detect patterns with abnormal pitches.

[0081] Measurement data and / or inspection data can be acquired for the electrode sheet described above. Measurement data and / or inspection data refers to all data that can be obtained through measurement or inspection of the pattern electrode. Measurement data and inspection data can be acquired by measuring instruments and inspectors that measure and inspect the electrode.

[0082] Measurement data may include numerically represented measurement results. For example, measurement data may include dimensional data of the electrode sheet, such as thickness and width, loading amount data of the coating material on the electrode sheet, and mismatch data between the coating lane on the upper surface of the electrode sheet and the coating lane on the lower surface of the electrode sheet. As a non-limiting example, the measuring instrument may be either a web gauge or a thickness gauge from Thermo Fisher Scientific.

[0083] Inspection data may include quality judgments and process events related to portions of the electrode sheet. For example, inspection data may include appearance data of the electrode sheet collected by an image-based inspection device such as a vision machine, data on breaks and seams in the electrode sheet, data on portions of the electrode sheet that have been sampled, data on portions of the electrode sheet that are scheduled for scrapping, data on reference points indicating the location of the electrode sheet, and defect data such as pinhole defects, crater defects, and line defects. The inspection device may be one of a color sensor, a seam sensor, a reference point sensor, and a vision machine.

[0084] The pattern indicator data, measurement data, and inspection data described above, as well as the coordinate data described later, may be time-series data. The pattern indicator data includes the pattern indicator and data relating to the time or time interval in which the pattern indicator was acquired. The time or time interval can be matched with the pattern indicator.

[0085] The above measurement data and / or inspection data includes the measured values ​​and / or inspection values, and data relating to the time or time interval in which the measured values ​​and / or inspection values ​​were acquired. The above time or time interval can be matched with the above measured values ​​and / or inspection values.

[0086] In other words, pattern indicators, coordinate values ​​of coordinate data, measured values, and test values ​​can be aligned in time.

[0087] Therefore, the pattern indicator data, coordinate data, measurement data, and / or inspection data described above can be related to one another based on the same time or time interval in which each data was acquired.

[0088] Referring to Figure 3, the battery manufacturing method of the present invention includes a second step (P120) of associating the pattern indicator data with the measurement data and / or inspection data.

[0089] For example, the pattern indicators in the pattern indicator data and the measured and / or tested values ​​mentioned above can be associated with each other based on the same time or time interval.

[0090] Figure 4 shows the loading amounts Rt0 to Rt10 of the coating material measured at measurement time points t0 to t10, respectively.

[0091] At time t0, the boundary line BL1 between the coated and uncoated areas was detected by the pattern counter; at time t8, BL2 was detected; and at time t10, BL3 was detected. The loading amounts measured at times t0, t8, and t10 are Rt0, Rt8, and Rt10. The loading amount measurement times for pattern number #1 are t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, and t10. The loading amount measurements corresponding to pattern number #1 and the above times are Rt0, Rt1, Rt2, Rt3, Rt4, Rt5, Rt6, Rt7, Rt8, Rt9, and Rt10.

[0092] Furthermore, the loading amounts Rt0 to Rt8 measured between time intervals t0 and t8 become the measured values ​​associated with the coated area between BL1 and BL2. In addition, the loading amounts Rt8, Rt9, and Rt10 measured between time intervals t8 and t10 become the measured values ​​associated with the uncoated area between BL2 and BL3.

[0093] Therefore, based on the same time interval t0 to t10, the pattern electrode of pattern number #1 and the loading amounts Rt0 to Rt10 can be associated.

[0094] Furthermore, the start and end points of the connecting tape T1 located in the coated portion of pattern number #2 can be detected by a seam sensor. The seam measurement data includes the seam measurement signal and the time measurement and end point measurement times mentioned above. In this case, the seam measurement data can be associated with the pattern of pattern number #2 that matches the time when T1 was detected and the time of the end point.

[0095] As described above, a pattern counter can determine the length of each pattern and the coated and uncoated portions belonging to each pattern by multiplying the difference in the time at which the boundary between the coated and uncoated portions is detected by the movement speed of the electrode sheet. Using the same principle, if an appropriate calculation tool is available, it is also possible to determine the length of the coated or uncoated portion corresponding to each measurement section by multiplying the difference (time) at each measurement point by the movement speed of the electrode sheet. Such calculation tools can be provided, for example, in a pattern counter, process controller, measuring instrument, or inspection instrument.

[0096] The association between the pattern indicator data and the measurement data and / or inspection data described above can be performed by the controller of the processing step in which the electrode sheet is processed. In this case, the measurement data and inspection data acquired by the measuring instrument and / or inspection instrument are transmitted to the controller, and the pattern indicator data acquired by the pattern counter can also be transmitted to the controller. The controller can associate the pattern indicators of the measurement data, inspection data and pattern indicator data acquired at the same time or time interval.

[0097] Alternatively, the association between the pattern indicator and the measurement data and / or inspection data can be performed by the measuring instrument and / or inspection instrument. In this case, the pattern indicator data acquired by the pattern counter can be transmitted to the measuring instrument and / or inspection instrument directly or via a controller. The measuring instrument and / or inspection instrument can associate the pattern indicator with the measurement data, inspection data, and pattern indicator data acquired at the same time or time interval.

[0098] Referring to Figure 3, the battery manufacturing method of the present invention includes the step (P130) of generating monitoring data for battery manufacturing based on the pattern indicator data and measurement data and / or inspection data associated with the pattern indicator data.

[0099] As described above, by attaching pattern indicators to pattern electrodes, the position and number of patterns on the pattern electrodes can be easily identified. This makes it easy to understand the production performance of the pattern electrodes. Furthermore, by associating the measurement data and / or inspection data acquired for the pattern electrodes with the pattern indicator data, the condition of each pattern, the presence or absence of electrode breakage, and the presence or absence of defects can be easily understood. A roll map is one of the monitoring data in the electrode manufacturing process. As shown in Figure 4, a roll map for a pattern electrode can include pattern indicator data, which includes the pattern indicator, and measurement or inspection data associated with the pattern indicator. The measurement data and / or inspection data are a type of process event data that occurs in each process. By accumulating the above roll maps for workpieces, parts, semi-finished products, and finished products in a unit process, it becomes possible to track the process history for shipped products (e.g., battery cells, battery modules, or battery packs). For example, shipped products may include cell IDs that can be used to track the process history if necessary.

[0100] Referring to Figure 3, the steps for generating the above monitoring data may include at least one of the following steps: i) A step (P131) to generate monitoring data using compressed measurement data and / or inspection data based on the pattern indicator data and the measurement data and / or inspection data. ii) A step (P132) to generate inter-process monitoring data by correlating the pattern indicator data of each process with each other so that they correspond to the same physical position on the electrode sheet.

[0101] As shown in Figure 4, multiple measurements can be assigned to a single pattern. In Figure 4, 10 measurements are associated with one pattern, but more measurements and / or test values ​​can be associated depending on the type of measuring instrument or tester. As the volume of measurement and / or test data increases in this way, it places a load on the server system that generates the monitoring data. This can slow down the data processing speed. To reduce data volume and improve data processing speed, measurement and / or test data can be compressed.

[0102] For example, a processing unit in a measuring instrument and / or inspection instrument can be configured to generate compressed measurement and / or inspection data based on pattern indicator data and the measurement and / or inspection data. The compressed measurement and / or inspection data has a smaller size than the measurement and / or inspection data associated with the pattern indicator data. The compressed measurement and / or inspection data can reduce the resources of the server that generates the monitoring data.

[0103] The compressed measurement data and / or inspection data described above may include, as representative values ​​of the measured and / or inspection values, pattern indicator data for the start and end points of the electrode sheet portion from which the measurement and / or inspection data was collected. The compressed measurement data may further include a timestamp indicating the date and time of collection of the measurement and / or inspection data for each or more patterns, a measuring instrument and / or inspection instrument ID, and an equipment ID.

[0104] For example, the processing unit of a measuring instrument and / or inspection instrument can calculate representative values ​​of the measurement data and / or inspection data for each pattern of the electrode sheet. These representative values ​​may include at least one of the mean, standard deviation, median, maximum, and minimum values ​​of the measurement data and / or inspection data for each pattern.

[0105] For example, if the loading amount data corresponding to pattern indicator #1 has 10 measured values ​​corresponding to one scan of the loading amount measuring instrument, the compressed measurement data can include a single representative value calculated based on the 10 measured values. This means that the size of the compressed measurement data may be smaller than the size of the measurement data associated with the pattern indicator data. In this case, the representative value can represent not only one pattern but also multiple patterns. That is, multiple patterns can be grouped together, and the measurement data and / or inspection data acquired for each group can be compressed to obtain a single representative value. In this case, measured values ​​below a certain value included in each pattern can be considered, for example, as values ​​measured in the uncoated part of the pattern and excluded when calculating the representative value. That is, the representative value can be calculated from the measured values ​​above a certain value included in each pattern.

[0106] In this case, based on the pattern indicator data described above, the pattern indicators at the start and end points of each pattern on the electrode sheet from which the measurement data and / or inspection data have been collected can be determined. Alternatively, the pattern indicators at the start and end points of electrode sheet portions corresponding to multiple patterns grouped together can be determined. The pattern indicators at the start and end points of the compressed measurement data and / or inspection data are substantially the same as the pattern indicators at the start and end points of the measurement data and / or inspection data associated with the pattern indicator data.

[0107] Measurement data and / or inspection data are processed in a set manner to determine judgment values ​​for each or more patterns of the electrode sheet. If the measured amount of coating material on the electrode sheet (e.g., the loading amount on the electrode sheet or the thickness of the electrode sheet) falls within a set range including upper and lower limits, the corresponding portion of the electrode sheet can be determined to be good. If the measured amount is less than the lower limit or greater than the upper limit, the corresponding portion of the electrode sheet can be determined to be defective.

[0108] The processing unit can be configured to transmit compressed measurement data and / or inspection data to the server system directly or via a process controller.

[0109] A server system or a server included in a server system (e.g., a Manufacturing Execution System (MES)) can generate monitoring data (e.g., a roll map) that includes the compressed measurement and / or inspection data. In addition to generating roll maps, the MES performs a variety of tasks for managing battery production. Therefore, generating roll maps based on compressed measurement and / or inspection data can reduce the MES resources allocated to generating and storing roll maps.

[0110] Figure 5 shows inter-process monitoring data generated by a battery manufacturing method according to an exemplary embodiment.

[0111] Figure 6 is a schematic diagram showing that the corresponding surfaces of the electrode sheet are reversed depending on the unwinding and winding directions of the electrode sheet.

[0112] The monitoring data described above may include a roll map for each process, which includes pattern indicator data for each process and measurement and / or inspection data for each process associated with the pattern indicator data. As shown in Figure 1, a roll map can be generated for each of multiple processes. For example, if the first process (coating process), second process (roll pressing process), and third process (slitting process) proceed sequentially, a roll map can be generated for each process. The roll map can exist not only in the form of a model of an electrode sheet as shown in Figure 2(a), but also in various forms that visually represent the data on the roll map, such as graphs and charts.

[0113] As described above, the electrode sheet can go through multiple roll-to-roll processes, and a roll map can be generated for each of these processes.

[0114] However, due to the characteristics of the roll-to-roll process, the end of the electrode sheet wound in the first process (preceding process, e.g., coating process) becomes the beginning when it is unwound in the second process (successor process, e.g., roll pressing process). In other words, the beginning and end of the electrode sheet are reversed between processes. For this reason, the pattern indicator data acquired in each process is also reversed between processes.

[0115] Furthermore, the electrode sheets are removed during and / or between each process as they go through multiple steps. Depending on the loss of these electrode sheets, the corresponding location on the electrode sheet may differ in the pattern indicator data acquired at each step.

[0116] Furthermore, depending on the winding and unwinding directions of the electrode sheet, the corresponding surfaces of the electrode sheet may be reversed between processes. For example, the upper surface of the electrode sheet may be reversed in the first process (preceding process, e.g., coating process), and the lower surface may be reversed in the second process (subsequent process, e.g., roll pressing process).

[0117] Due to the above-mentioned inversion, electrode sheet loss, and inversion of the electrode sheet surface, the pattern indicator data corresponding to the same electrode sheet position becomes inconsistent across multiple processes. In this situation, even if a roll map, which is monitoring data, is created for each process, it becomes difficult to compare the roll maps of each process in the same dimension, making it difficult to track the cause of problems that occur with the electrode sheet.

[0118] Referring to an exemplary embodiment with reference to Figure 3, the step of generating the monitoring data may further include a step (P132) of generating inter-process monitoring data by correlating the pattern indicator data of each process with each other so as to correspond to the same physical position on the electrode sheet.

[0119] Figure 5 shows the process of generating inter-process monitoring data by corresponding the pattern indicator data for each of the first to third processes, reflecting the initial and final reversal of the electrodes and electrode loss.

[0120] Figure 5 displays both the pattern indicator data and the time interval in which the pattern indicator data was acquired.

[0121] In the first step, electrodes with pattern numbers #1 to #9 have their pattern numbers arranged in reverse order in the second step. Furthermore, the pattern numbers from the second step are again arranged in reverse order in the third step. Because the start and end positions of the electrode sheet are reversed between steps, in order to compare the data from each step at the same position on the actual electrode sheet, it is necessary to match the reversed pattern number data as shown in Figure 5.

[0122] Furthermore, Figure 5 shows the portions removed in each process. When the pattern indicator data includes the portions removed due to loss in each process, it is displayed as "Absolute," and when the pattern indicator data excludes the removed portions, it is displayed as "Relative." When the pattern indicator data is considered as a type of coordinate indicating intermittent positions, "Absolute" can be considered as "Absolute Coordinates," and "Relative" can be considered as "Relative Coordinates." The electrode sheet is removed due to defects, breakage, etc., in each process, or processed to remove portions with uneven quality between processes. In Figure 5, the pattern indicator data is mapped between processes, taking into account the loss of the electrode sheet that occurs during and / or between each process.

[0123] For example, in the first process, after considering the losses that occurred during the process, only #2, #3, #6, #7, and #8 remain from the "absolute" pattern indicator data #1 to #9. When this data is corrected with "relative" pattern indicator data, it becomes #1 to #5. In other words, the "absolute" pattern indicator #2 in the first process corresponds to the "relative" pattern indicator #1. These pattern indicators were acquired in the same time interval T2. In this way, by reflecting the losses in each process and considering the reversal of the start and end of each process, it is possible to associate pattern indicator data corresponding to the same physical electrode sheet position in each process.

[0124] Cell IDs KF1 and KF2 can be assigned to battery cells manufactured using the surviving electrodes that remain after the first to third processes. In this case, the pattern indicator data for each process corresponding to each cell ID is the same as that shown in the leftmost diagram in Figure 5.

[0125] Furthermore, the pattern indicator data for each process is associated with measurement data and / or inspection data, as shown in Figure 4. Therefore, by referring to the roll map or the data contained in the roll map and selecting a specific pattern indicator, it is possible to understand the measurement data and / or inspection data corresponding to that pattern indicator. For example, in Figure 5, the measurement data and / or inspection data for each process associated with the pattern indicators corresponding to cells IDKF1 and KF2 can be intuitively understood.

[0126] Figure 6 shows that the surface of the electrode sheet reverses between processes depending on the winding and unwinding directions of the electrode sheet.

[0127] In Figure 6, the electrode sheet ES is a double-sided electrode sheet with a coating material on both sides.

[0128] The start of the electrode sheet is indicated by S, and the end by E. The top surface of the electrode sheet is indicated by (1), and the bottom surface by (2), with a black dot marked on the top surface (1) for comparison. There are four cases in which the electrode roll, manufactured by being wound onto a rewinder in the preceding process, is unwound from the unwinder in the succeeding process. In all four cases, a start-end reversal occurs between the preceding and succeeding processes, where the start and end of the electrode sheet are reversed.

[0129] For example, if the winding direction of the rewinder in the preceding process is upward winding (clockwise winding) and the unwinding direction of the unwinder in the following process is upward unwinding (clockwise unwinding), then the start section S and the end section E are reversed. In this case, the upper surface (1) and the back surface (2) of the electrode sheet ES are not reversed.

[0130] When the winding direction of the rewinder in the preceding process is upward winding, and the unwinding direction of the unwinder in the following process is downward unwinding (counterclockwise unwinding), the inversion of the electrode sheet ES occurs simultaneously with the inversion of the upper surface (1) and the lower surface (2) of the electrode sheet.

[0131] When the winding direction of the rewinder in the preceding process is downward winding (counterclockwise winding) and the unwinding direction of the unwinder in the succeeding process is upward winding, the reversal of the electrode sheet ES occurs simultaneously with the reversal of the upper surface (1) and the lower surface (2) of the electrode sheet.

[0132] When the winding direction of the rewinder in the preceding process is downward winding, and the unwinding direction of the unwinder in the following process is downward unwinding, only the reversal of the electrode sheet from start to finish occurs.

[0133] The lower diagram in Figure 6 shows whether start-end reversal and surface reversal occur depending on the winding and unwinding direction during the first, second, and third processes.

[0134] As shown in Figure 5, even if the pattern indicator data is matched to account for electrode inversion at the start and end of the process and electrode loss, if surface inversion occurs as shown in Figure 6, the pattern indicator data for each process may not correspond to the position of the same actual electrode sheet.

[0135] In this case, for example, control logic can be assigned as 0 or 1 on the server of the server system to record whether or not surface inversion occurred, and the surfaces of the electrode sheets can be made to correspond to each other between the preceding and succeeding processes. That is, in Figure 6, if surface inversion does not occur, a control logic of 0 can be assigned. In this case, since surface inversion did not occur, the pattern indicator data of the preceding and succeeding processes can be matched through the correspondence process shown in Figure 5.

[0136] If surface inversion occurs, control logic 1 can be applied. In this case, based on the control logic, the server can assign pattern indicator data for each process so that it corresponds to absolute and relative pattern indicator data for the upper surface of the first process and absolute and relative pattern indicator data for the lower surface of the second process.

[0137] (Second Embodiment) Figure 7 is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment.

[0138] Figure 8 shows a roll map of a pattern electrode with a pattern indicator and sub-pattern indicators displayed.

[0139] Referring to Figure 7, the battery manufacturing method of the present invention includes, in addition to acquiring pattern indicator data and measurement and / or inspection data for the electrode sheet as the electrode sheet moves through multiple processes, a step (P210) of acquiring coordinate data that can continuously indicate the longitudinal position of the electrode sheet.

[0140] Methods that use the movement speed and time difference of the electrode sheet to calculate the pattern length (pitch) and the length of the interval in which measurement data and / or inspection data are acquired may require additional calculation tools. Furthermore, because the movement speed of the electrode sheet is not always constant, the measurement point of a specific data on the electrode sheet may not accurately correspond to the position of the electrode sheet at that point. Also, the movement speed of the electrode sheet varies depending on the electrode sheet specifications, model type, processing step type, and the drive mechanism of the processing device. Thus, methods that indirectly determine the position and distance of the electrode sheet using different movement speeds and time differences can slow down data processing speed and increase manufacturing costs.

[0141] In the embodiment shown in Figure 7, both pattern indicator data and coordinate data can be used to display the longitudinal position of the electrode sheet. For example, as the main position data, pattern indicator data including a pattern indicator that intermittently shows the position on the electrode sheet can be acquired, and coordinate data including coordinate values ​​that can continuously show the longitudinal position can also be acquired. The difference between the coordinate values ​​and the above coordinate values ​​directly indicates the position of the electrode sheet or the distance of a specific section. Therefore, by acquiring coordinate data, position information regarding the electrode sheet can be obtained more accurately without performing the above additional calculations and by eliminating the influence of the electrode sheet's movement speed. By associating such coordinate data with the pattern indicator data, with measurement data and / or inspection data, or with measurement data and / or inspection data associated with the pattern indicator data, state information for the electrode sheet can be obtained more accurately and reliably.

[0142] A first position measuring instrument (pattern counter) can be used to acquire pattern indicator data. A second position measuring instrument can be used in addition to acquire coordinate data. The second position measuring instrument may be a rotary encoder that can represent the position signal of an electrode sheet moving in accordance with the amount of rotation of the unwinder or rewinder as an encoder value. Alternatively, it may be a linear encoder that represents the position signal corresponding to the displacement of the electrode sheet as an encoder value. The encoder may be configured to be in contact with or non-contact with the electrode sheet. The second position measuring instrument may be equipped with a predetermined calculation unit that can convert the encoder value into a coordinate value. Alternatively, a process controller may be transmitted the encoder value and convert it into a coordinate value via a predetermined calculation. Considering the load on the process controller, it may be preferable to convert directly to a coordinate value with the encoder.

[0143] By comparing the set pattern pitch with coordinate data, a more detailed sub-pattern indicator can be calculated from the pattern indicator. For example, the pattern indicator and sub-pattern indicator can be the pattern number and sub-pattern number, respectively, as shown in Figure 8.

[0144] Referring to Figure 8, the electrode sheet ES with the pattern is moving in the longitudinal direction X, which is the direction of travel (MD).

[0145] For example, the first position measuring instrument, which is a pattern counter, can sense the boundary lines BL1, BL2, and BL3 between the coated part 2 and the uncoated part 1. For example, the second position measuring instrument, which is a rotary encoder, can represent the longitudinal position of each pattern (#1, #2) as coordinate values ​​based on the encoder value. In this case, if the set pattern pitch PP is 800 mm, the set pattern pitch can be divided into 10 equal parts and the pattern numbers can be displayed in decimal units. For example, when the electrode sheet moves by 80 mm and the controller receives the coordinate value corresponding to 80 mm, the controller can count a pattern number of 0.1 pt at the position corresponding to this coordinate value. Until the electrode sheet moves by 800 mm and the first position measuring instrument senses the boundary line BL3 of the coated part of pattern number #2, the controller can count sub-pattern numbers from 0.1 pt to 1.0 pt to correspond to the coordinate values ​​at each point. As described above, by calculating the sub-pattern numbers by comparing the set pattern pitch and coordinate data, the pattern numbers can be displayed in more detail. This makes it easier to identify patterns with abnormal pitches.

[0146] By comparing the set pattern pitch with the length of each pattern, it is possible to identify patterns with abnormal pitches.

[0147] In this case, the length of each pattern and / or the lengths of the coated and uncoated portions included in the pattern can be 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. In this case, since the coordinate values ​​that directly represent position and distance are compared with the pattern pitch, the length (pitch) of the pattern can be intuitively determined without any separate calculations to determine the distance (length), as in the first embodiment. Therefore, patterns with excessive or insufficient pitch can be identified more quickly.

[0148] Referring to Figure 7, the battery manufacturing method of the present invention includes, in addition to associating the pattern indicator data with the measurement data and / or inspection data, the step (P220) of associating the coordinate data with the pattern indicator data, the measurement data and / or inspection data.

[0149] As described in relation to the first embodiment, the pattern indicator data and the measurement data and / or inspection data can be associated with each other in relation to the same time or time interval. In the second embodiment, in addition, the coordinate data can be associated with at least one of the following: i) Pattern indicator data ii) Measurement data and / or inspection data iii) The time or time interval during which the pattern indicator data and the above measurement data and / or inspection data were acquired.

[0150] The battery manufacturing method of the present invention includes the step (P230) of generating monitoring data for battery manufacturing based on the pattern indicator data, the coordinate data, and measurement data and / or inspection data associated with the pattern indicator data and coordinate data.

[0151] As monitoring data, a role map including coordinate data can be provided.

[0152] Figure 9 shows an example of a roll map in which pattern indicator data and coordinate data are displayed on a pattern electrode.

[0153] Figure 9(a) is a roll map of a double-sided electrode, simulating the coating state of an actual pattern electrode. The areas on the electrode sheet other than the coated areas are uncoated.

[0154] In this example, the first uncoated area on the right side of Figure 9(a) and the adjacent coated area can be combined and counted as pattern number #1. Alternatively, the first coated area on the right side of Figure 9(a) and the adjacent uncoated area on the left can be combined and counted as pattern number #1. The first position measuring instrument sequentially senses the boundary between the uncoated and coated areas, senses patterns #1 to #8, and acquires pattern number data. The roll map above also displays coordinate data (displayed in meters) acquired by the second position measuring instrument. To avoid data overload, coordinate data can only be displayed on the main part of the roll map.

[0155] Roll maps can be generated not only for cross-sectional electrodes where the coating is formed on only one side of the electrode sheet, but also for double-sided electrodes where the coating is formed on both sides of the electrode sheet, as shown in Figure 9(a). To prevent an excessive increase in roll map data, only key event information can be collected and transmitted to the server. The server can then generate a roll map for the double-sided electrode based on this information. When performance management is performed considering both the top and bottom patterns, the amount of data to be considered increases, so performance management can be performed based on either the top or bottom pattern. In this embodiment, pattern performance management is performed based on the bottom pattern.

[0156] When the set pattern pitch is 878 mm, patterns with abnormal pitches can be represented in comparison to the set pattern pitch based on pattern indicator data from the first position measuring instrument and coordinate data from the second position measuring instrument. Figure 9(a) shows a normal section coated according to the set pattern pitch. However, based on the bottom surface pattern, a pattern with an insufficient length is measured and displayed at position #4, an uncoated section at position #5, and a pattern with an excessive length at section #6. For example, patterns with a set pattern pitch of 0.5 times or less can be considered defective patterns. Alternatively, patterns with a set pattern pitch of 1.5 times or more can be considered defective patterns.

[0157] When there is an uncoated section between adjacent patterns that is not included in the pattern, a number of pattern indicators can be assigned to the uncoated section equal to the number of patterns obtained by dividing the length of the uncoated section by the set pattern pitch. In Figure 9(a), the uncoated section between patterns #4 and #6 is assigned the pattern number #5. If pattern indicators are not assigned to the uncoated section, gaps will appear in the roll map information, and the state of the electrode sheet cannot be fully represented. Errors may occur when managing and tracking the electrode process with such a roll map. Therefore, the roll map needs to include information about uncoated sections not included in the pattern, along with information about patterns with abnormal pitches different from the set pattern pitch. The information about the uncoated section is information about pattern indicators that are assigned to the uncoated section in proportion to the number of patterns obtained by dividing the length of the uncoated section by the set pattern pitch.

[0158] In this embodiment, information regarding reference points and joints is also included.

[0159] Reference points M1, M2, and M3 are marked on the electrode sheet at predetermined intervals. The roll map can display the actual positions of the reference points and their intervals. If the interval between reference points changes from the set reference point positions, it is possible to understand the change in electrode length that occurred during or before / after the process. The indication of a connecting tape, which is a seam, means that the electrode broke for some reason and was connected by a connecting tape T1. The position of the connecting tape T1 can be indicated by obtaining coordinate values ​​or pattern indicator data for the start point Ts and end point Te of the connecting tape. From such information, it is possible to more accurately understand the history of the state changes of the actual electrode sheet after going through multiple processes.

[0160] Figure 9(a) shows three reference points M1, M2, and M3, along with their respective pattern indicators and coordinate values. The reference points can be measured using a reference point measuring instrument, and the seams can be measured using a seam sensor.

[0161] Figure 9(b) is a roll map showing pattern indicator data and coordinate data for the coated and uncoated sections.

[0162] Figure 9(b) shows the pattern indicators displayed in units of sub-pattern indicators.

[0163] Additionally, coordinate values ​​are displayed for key locations.

[0164] The roll map in Figure 9(b) includes uncoated sections, and sub-pattern numbers are displayed for these uncoated sections in relation to the set pattern pitch. These uncoated sections include uncoated parts corresponding to two set pattern pitches and an uncoated part corresponding to 0.6 times the set pattern pitch (0.6 Pt).

[0165] On the other hand, information regarding the actual results excluding the non-coated section can be combined and transmitted to the process controller. The controller is the process equipment that controls the process and is interested in the actual results produced by the electrodes, and needs to record the net results. Among the pattern numbers in Figure 9(b), those that are not sub-pattern numbers (numbers not expressed in decimal units: for example, 24pt) are the pattern numbers that indicate the results. In the non-coated section, the pattern number remains unchanged at 26pt, and at the end of the non-coated section it becomes 27pt, meaning the pattern number has increased by 1.

[0166] Thus, according to the present invention, the battery manufacturing system described above allows for the free display of pattern indicator data and coordinate data, and furthermore, it allows for the separate display of pattern indicators that are aggregated as actual results and pattern indicators that are not actual results.

[0167] Therefore, it is possible to generate monitoring data and roll map data that match the actual pattern electrode state, significantly improving data consistency.

[0168] Referring again to Figure 7, the battery manufacturing method of this embodiment includes at least one of the following steps when generating monitoring data. i) A step (P231) to generate monitoring data using compressed measurement data and / or inspection data based on the pattern indicator data, coordinate data, and measurement data and / or inspection data. ii) A step (P232) to generate inter-process monitoring data by correlating the pattern indicator data of each process and / or the coordinate data of each process to correspond to the same physical position on the electrode sheet.

[0169] In this embodiment, in addition to pattern indicator data, measurement data and / or inspection data can be compressed based on coordinate data. That is, multiple measurement values ​​measured for one or more patterns can be compressed to calculate a representative value. In this case, coordinate data having coordinate values ​​corresponding to the one or more patterns can also be included in the compressed data.

[0170] For example, a processing unit provided in a measuring instrument and / or inspection instrument may be configured to generate compressed measurement data and / or inspection data based on pattern indicator data, coordinate data, and the above measurement data and / or inspection data.

[0171] The compressed measurement and / or inspection data may include representative values ​​of the measured and / or inspection values, pattern indicator data and coordinate data of the start and end points of the electrode sheet portion from which the measurement and / or inspection data was collected.

[0172] The above representative values ​​may include at least one of the following: mean, standard deviation, median, maximum, and minimum values ​​of the measurement and / or test data for each pattern.

[0173] Based on the pattern indicator data and coordinate data described above, the pattern indicators and coordinate values ​​of the start and end points of each pattern on the electrode sheet from which measurement data and / or inspection data have been collected can be determined. Alternatively, the pattern indicators and coordinate values ​​of the start and end points of electrode sheet portions corresponding to multiple patterns grouped together can be determined.

[0174] Measurement data and / or inspection data are processed according to a set method, thereby determining a judgment value for each pattern or multiple patterns of the electrode sheet.

[0175] The processing unit can be configured to transmit compressed measurement data and / or inspection data to the server system directly or via a process controller.

[0176] A server system or a server included in a server system can generate monitoring data (e.g., a role map) that includes the compressed measurement data and / or inspection data.

[0177] Figure 10 shows inter-process monitoring data generated by a battery manufacturing method according to an exemplary embodiment.

[0178] The above monitoring data may include pattern indicator data for each process, coordinate data, and a roll map for each process, which may include measurement data and / or inspection data for each process associated with the pattern indicator data.

[0179] Alternatively, the above monitoring data may be inter-process monitoring data in which pattern indicator data and coordinate data for each process are displayed in correspondence to each other, so as to correspond to the position of the same physical electrode sheet.

[0180] Figure 10 shows the changes in coordinate data for the first to third processes, along with the time data.

[0181] In the first step, electrodes with coordinate values ​​from 1.5 to 9.5 have their coordinate values ​​arranged in reverse order in the second step. Furthermore, the coordinate values ​​from the second step are again arranged in reverse order in the third step. Because the positions of the start and end of the electrode sheet are reversed between steps, in order to compare the data from each step at the same position on the actual electrode sheet, it is necessary to match the reversed pattern indicator data as shown in Figure 10.

[0182] Furthermore, Figure 10 shows the portions removed in each process. When the coordinate data includes the portions removed due to loss in each process, it is displayed as "absolute coordinates," and when the coordinate data excludes the removed portions, it is displayed as "relative coordinates." Coordinate data can, for example, continuously indicate the longitudinal position of the electrode sheet according to the pulse value of the rotary encoder. On the other hand, pattern indicator data is advantageous for intermittently indicating the position of the electrode sheet. For example, pattern indicator data can be represented by sub-pattern indicators in units of 0.1. For example, coordinate data can be represented in units of 0.01m.

[0183] For example, in the first process, after considering the losses that occurred during the process, only 2.5, 3.5, 6.5, 7.5, and 8.5 remain among the "absolute coordinate values" from 1.5 to 9.5. When this data is corrected with "relative coordinate values," it becomes 1.5 to 5.5. That is, the "absolute coordinate value" of 2.5 in the first process corresponds to the "relative coordinate value" of 1.5. These coordinate values ​​were acquired at the same time t2. By reflecting the losses in each process and considering the reversal of the start and end points between processes, it is possible to associate coordinate data corresponding to the position of the same physical electrode sheet in each process.

[0184] Battery cells manufactured using the surviving electrodes remaining after the first to third processes can be assigned cell IDs KF1 and KF2. In this case, the coordinate data for each process corresponding to each cell ID is the same as that shown in the leftmost diagram in Figure 5.

[0185] Furthermore, the inter-process data in Figure 10 can be generated taking into account the surface inversion described above.

[0186] If surface inversion does not occur, a control logic of 0 can be assigned. In this case, since surface inversion did not occur, the coordinate data of the preceding and succeeding processes can be matched through the corresponding operation shown in Figure 10.

[0187] If surface inversion occurs, control logic 1 can be applied. In this case, based on the control logic, the server can assign coordinate data for each process so that the absolute coordinate data and relative coordinate data for the upper surface of the first process correspond to the absolute coordinate data and relative coordinate data for the lower surface of the second process.

[0188] Although Figure 10 only shows the inter-process correspondence of coordinate data, the pattern indicator data associated with the above coordinate data can also be made inter-process. That is, the pattern indicator data of each process and / or the coordinate data of each process can be made inter-process by at least one of the following: 1) As the positions of the start and end of the electrode sheet are reversed between processes, the reversed pattern indicator data and / or coordinate data are made to correspond between processes. 2) The pattern indicator data and / or coordinate data, which change due to electrode sheet loss occurring during and / or between each process, are made to correspond between processes. 3) As the corresponding surfaces of the electrode sheet are reversed between processes according to the winding and unwinding directions of the electrode sheet, the reversed pattern indicator data and / or coordinate data are made corresponding between processes.

[0189] The pattern indicator data and coordinate data for each process are associated with measurement data and / or inspection data. Therefore, by referring to the roll map or the data contained in the roll map and selecting a specific pattern indicator or coordinate value, the corresponding measurement data and / or inspection data can be obtained.

[0190] (Third embodiment) Figure 11 shows a battery manufacturing system according to an exemplary embodiment.

[0191] The above-described battery manufacturing system 1000 may include a battery manufacturing apparatus 100, a server system 200, and user equipment 300.

[0192] The battery manufacturing apparatus 1000 may include an unwinder 111, a rewinder 113, a processing mechanism 115, first position measuring instruments 125R, 125U, second position measuring instruments 121, 123, measuring instrument and / or inspection instrument 130, and a controller 140.

[0193] The unwinder 111 can be configured to unwind the electrode sheet ES from the electrode roll ER1. The rewinder 113 can be configured to wind the electrode sheet ES onto the electrode roll ER2. This allows the electrode sheet ES to move between the unwinder 111 and the rewinder 113.

[0194] A process for manufacturing a battery (for example, an electrode process) can be carried out on the electrode sheet ES.

[0195] The electrode sheet ES can be processed by a processing mechanism 115. For example, the processing mechanism 115 may include a coater, which can coat the electrode sheet with electrode slurry to form a patterned electrode sheet. In another example, the processing mechanism 115 may include a pressure roll, which can perform a roll pressing process on the electrode sheet ES coated with the electrode slurry in a pattern. In yet another example, the processing mechanism 115 may include a splicing die and a scrap port, which can scrap a portion of the electrode sheet ES. In yet another example, the processing mechanism may include a slitting knife, which can separate the electrode sheet ES into multiple electrode sheets.

[0196] The first position measuring instruments 125R and 125U described above may be pattern counters that count pattern indicators on the electrodes. The pattern indicators intermittently indicate the position on the electrode sheet as it moves between the unwinder and the rewinder.

[0197] The first position measuring instrument 125U, installed on the unwinder side, can be configured to sense the amount of electrode sheet ES unwound from the electrode roll ER1 by the unwinder 111. The controller 140 can be configured to collect pattern indicator data PID generated by the first position measuring instrument 125U.

[0198] The first position measuring instrument 125R, installed on the rewinder side, can be configured to sense the amount of electrode sheet ES wound onto the pattern electrode roll ER2 by the rewinder 113. The controller 140 can be configured to collect pattern indicator data PID generated by the first position measuring instrument 125R. This pattern indicator data PID can indicate the production performance of the battery manufacturing apparatus 100.

[0199] The second position measuring instrument is, for example, a rotary encoder. Of the second position measuring instruments, the first rotary encoder 121 can be configured to sense the amount of electrode sheet ES unwound from the electrode roll ER1 by the unwinder 111. Thus, the first rotary encoder 121 can be configured to generate an unwound amount signal indicating the amount of electrode sheet ES unwound. The first rotary encoder 121 can convert the unwound amount signal and directly acquire input amount data (coordinate data). Alternatively, the first rotary encoder 121 can transmit the unwound amount signal to the controller 140, and the controller 140 can convert the signal to collect input amount data. The input amount data is the amount of material (i.e., electrode roll ER1) fed into the battery manufacturing apparatus 100 to manufacture a battery, and is coordinate data CD.

[0200] The second rotary encoder 123 can be configured to sense the amount of electrode sheet ES wound onto the electrode roll ER2 by the rewinder 113. This allows the second rotary encoder 123 to generate a winding amount signal indicating the amount of electrode sheet ES wound. The second rotary encoder 123 can convert the winding amount signal to directly acquire exhaustion amount data (coordinate data). Alternatively, the second rotary encoder 123 can transmit the winding amount signal to the controller 140, where the controller 140 converts the signal to collect exhaustion amount data. The exhaustion amount data can represent the production performance of the battery manufacturing apparatus 100.

[0201] The technical concept of the present invention will be described below, focusing on an embodiment in which the controller 140 collects pattern indicator data PID and coordinate data CD generated by the first position measuring instrument 125R and the second position measuring instrument 123.

[0202] As a non-limiting example, controller 140 is a process controller that controls the processing step and may be a PLC (Programmable Logic Controller). Controller 140 may include a power supply, a CPU, an input interface, an output interface, a communication interface, and a memory device. The communication interface may be configured to send and receive data between controller 140 and the first position measuring instruments 125U, 125R, the second position measuring instruments 121, 123, the measuring instrument and / or inspection instrument 130, and the server system 200.

[0203] The measuring instrument may be configured to measure the electrode sheet ES and collect measurement data MD. The inspecting instrument may be configured to inspect the electrode sheet ES and collect inspection data ID. One or more measuring instruments or inspecting instruments may be provided. In this embodiment, for convenience of explanation, the measuring instrument and / or inspecting instrument are collectively denoted by a single reference numeral 130.

[0204] The measuring and / or testing instrument may include a sensing unit 130S and a processing unit 130P. The sensing unit 130S may be configured to sense physical quantities of an electrode sheet ES to generate a measurement signal MS and an inspection signal IS. For example, the sensing unit 130S may include a TDI (Time Delay and Integration) camera, a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and a TOF (Time of Flight) sensor.

[0205] The processing unit 130P can be configured to receive measurement signals MS and inspection signals IS sensed by the sensing unit 130S in order to collect measurement data MD and inspection data ID. The processing unit 130P can be connected to the sensing unit 130S by wire or wireless connection.

[0206] The controller 140 can collect measurement data and / or inspection data MD / ID generated by the measuring instrument and / or inspection instrument 130. The controller 140 can also be configured to control the operation of the unwinder 111, rewinder 113, and processing mechanism 115. Signals for the operation and interruption of the unwinder 111, rewinder 113, and processing mechanism 115 can be generated based on electrode spec data ESD, additional inspection signals, and measurement signals.

[0207] The pattern indicator of the above pattern indicator data PID can be associated with the above measurement data and / or inspection data MD / ID. For example, a pattern indicator collected based on a specific time or time interval can be associated with measurement data and / or inspection data MD / ID that matches the same time or time interval. The processing unit 130P of the measuring instrument and / or inspection instrument receives the pattern indicator data PID from the first position measuring instruments 125U, 125R and can associate the pattern indicator with the measurement data and / or inspection data. Alternatively, the above pattern indicator data and measurement data and / or inspection data can be transmitted to the controller 140, where the pattern indicator can be associated with the measurement data and / or inspection data.

[0208] Furthermore, the processing unit 130P of the measuring instrument and / or inspection instrument receives coordinate data CD from the second position measuring instruments 121 and 123, and can associate the coordinate data with pattern indicator data, measurement data, and / or inspection data. Alternatively, the coordinate data, measurement data, and / or inspection data are transmitted to the controller 140, where the controller can associate the coordinate data with pattern indicator data, measurement data, and / or inspection data.

[0209] According to an exemplary embodiment, the measuring instrument and / or the inspector 130 or the controller 140 can calibrate the pattern indicator data PID and coordinate data CD based on the offset length OL.

[0210] Because the measuring instrument and / or inspector is located at a different position from the first position measuring instrument, the portion of the electrode sheet ES measured and / or inspected at the same time may be different from the portion of the electrode sheet ES that is subject to the pattern indicator sensed by the first position measuring instrument. Similarly, because the measuring instrument and / or inspector is located at a different position from the second position measuring instrument, the portion of the electrode sheet ES measured and / or inspected at the same time may be different from the portion of the electrode sheet ES that is subject to the pattern indicator sensed by the second position measuring instrument.

[0211] Therefore, the pattern indicators in the pattern indicator data collected at the same time as the measurement data and / or inspection data can be calibrated by adding or subtracting the offset length corresponding to the number of pattern indicators. The calibrated pattern indicators can then be associated with the measurement data and / or inspection data to obtain measurement data and / or inspection data associated with the calibrated pattern indicators. Alternatively, the coordinate values ​​in the coordinate data collected at the same time as the measurement data and / or inspection data can be calibrated by adding or subtracting the offset length. The calibrated coordinate values ​​can then be associated with the measurement data and / or inspection data to obtain measurement data and / or inspection data associated with the calibrated coordinate values.

[0212] Such calibration of pattern indicator data and / or coordinate data can be performed in the processing unit 130P or controller 140 of the measuring instrument and / or inspection instrument.

[0213] The pattern indicator data generated by the processing unit 130P and associated with the measurement and / or inspection data can be transmitted to the server system 200 directly or via the controller 140. Alternatively, the pattern indicator data generated by the controller 140 and associated with the measurement and / or inspection data can be transmitted to the server system 200.

[0214] The coordinate data generated by the processing unit 130P and associated with the measurement and / or inspection data can be transmitted to the server system 200 directly or via the controller 140. Alternatively, the coordinate data generated by the controller 140 and associated with the measurement and / or inspection data can be transmitted to the server system 200.

[0215] The server system 200 can generate monitoring data for battery manufacturing based on the pattern indicator data PID and the measurement data and / or inspection data associated with the pattern indicator data.

[0216] Alternatively, the server system 200 can generate monitoring data for battery manufacturing based on the pattern indicator data PID, the coordinate data CD, and the measurement data and / or inspection data associated with the pattern indicator data and the coordinate data.

[0217] The above server system can generate at least one of the following monitoring data: i) Monitoring data including the above-mentioned pattern indicator data PID and the above-mentioned measurement data and / or inspection data, which has been compressed based on the above-mentioned measurement data and / or inspection data. ii) Inter-process monitoring data generated by correlating the pattern indicator data of each process with the position of the same actual electrode sheet.

[0218] Furthermore, the above server system can generate at least one of the following monitoring data: i) Monitoring data including the pattern indicator data PID, the coordinate data CD, and the measurement data and / or inspection data compressed based on the above measurement data and / or inspection data. ii) Inter-process monitoring data generated by correlating pattern indicator data from each process and / or coordinate data from each process so that it corresponds to the position of the same physical electrode sheet.

[0219] The processing unit 130P of the measuring instrument and / or inspection device 130 may be configured to generate compressed measurement data and / or inspection data based on pattern indicator data and the measurement data and / or inspection data. Alternatively, the processing unit 130P of the measuring instrument and / or inspection device 130 may be configured to generate compressed measurement data and / or inspection data based on pattern indicator data, coordinate data and the measurement data and / or inspection data. The compressed measurement data and / or inspection data may include representative values ​​of the measured and / or inspection values ​​of the measurement data and / or inspection data, and pattern indicator data and / or coordinate data of the start and end points of the electrode sheet portion from which the measurement data and / or inspection data were collected.

[0220] The original data OD (pattern indicator data, coordinate data, measurement data and / or inspection data associated with the pattern indicator data and coordinate data) acquired by the processing unit 130P and the compressed measurement data and / or inspection data PD can be transmitted to the server system 200 via different routes.

[0221] For example, compressed measurement data and / or inspection data PD can be transmitted from the processing unit 130P to the server system 200 via the controller 140. Original data OD can be transmitted directly from the processing unit 130P to the server system 200.

[0222] The server system 200 can be equipped with multiple servers 210, 220, 230, 240, and 250, each performing its own function.

[0223] Compressed measurement data and / or inspection data PD can be transmitted to server 220 via server 210 within server system 200. Server 210 may be a program for communication between the process controller 140 of the manufacturing equipment and server 220 for manufacturing management. Server 210 may be implemented in hardware. Server 210 may be configured to translate electrode specification data ESD transmitted from server 220 into the language of controller 140. Server 210 may also be configured to translate compressed measurement data and / or inspection data PD into the language of server 220 and record it in server 220's database.

[0224] Server 220 can be configured to generate a roll map. The roll map may include data regarding lot specifications. These lot specifications may include, for example, the lot number, the length of the wound electrode sheet ES, the width of the electrode sheet ES, and the material and composition used to process the electrode sheet ES.

[0225] According to an exemplary embodiment, the server 220 may be a data processing system that supports various activities necessary to manage the manufacturing of secondary batteries, such as work schedule management, work instructions, quality control, and work performance aggregation. The server 220 may be, for example, a Manufacturing Execution System (MES). The server 220 may be configured to input, process, output, and communicate data necessary for electrode manufacturing processes such as coating, roll pressing, and slitting processes.

[0226] Server 230 can be configured to store large-capacity original data ODs, i.e., original data ODs containing raw data. Server 230 can be configured to transmit original data ODs to Server 240 in response to API requests ARs from Server 240. API requests ARs may include information for identifying measurement and / or inspection data associated with pattern indicator data and / or coordinate data. API requests ARs may include, for example, timestamps, start pattern indicators, end pattern indicators, start coordinates, and end coordinates.

[0227] Server 240 can be configured to store and process measurement and / or inspection data of electrode sheets ES. Server 240 can manage the quality of electrode sheet ES processing by continuously monitoring the processing of electrode sheet ES based on the measurement and / or inspection data. According to an exemplary embodiment, server 240 may be a Statistical Process Controller (SPC). Server 240 can identify problem conditions in a timely manner and provide alarms to operators before potential problems occur by collecting and analyzing manufacturing data in near real time.

[0228] Server 250 can be configured to store data from servers 220, 230, and 240. Server 250 can be configured to store original data (OD) and compressed data (PD). Server 250 could be, for example, a data warehouse, capable of storing necessary data for extended periods based on factors such as the product's quality assurance period. This allows for tracking of the manufacturing process according to the product lifecycle.

[0229] Since server 220 stores and processes a lot of general manufacturing management data other than role maps, the role maps stored on server 220 can include small-capacity compressed data PD instead of the large-capacity original data. Server 220 can provide role maps in response to requests from user equipment 300.

[0230] Server 240 can provide a roll map including original data OD. Furthermore, as described in relation to Figures 5, 6, and 10 above, Server 240 can generate inter-process monitoring data in which the pattern indicator data for each process is displayed in correspondence with each other to correspond to the same physical electrode sheet position. Additionally, Server 240 can generate inter-process monitoring data in which the coordinate data for each process is displayed in correspondence with each other to correspond to the same physical electrode sheet position.

[0231] In other words, the server 240 can calculate pattern indicator data and coordinate data corresponding to the position of the actual electrode sheet, taking into account the start-end reversal of the electrode and electrode loss between multiple processes, based on the time or time interval of the electrode sheet (see Figures 5 and 10). The server 240 can also determine whether or not there is surface reversal between the preceding and succeeding processes and correspond the pattern indicator data and coordinate data of the preceding and succeeding processes, respectively, so that the surfaces of the electrode sheet correspond. In this case, the server 240 can assign control logic 0 and 1 to the monitoring data (e.g., roll map) of each process depending on whether or not there is surface reversal. The server 240 may include a separate or integrated calculation unit or calculation program that rearranges, calculates, and corresponds the data according to the start-end reversal of the electrode, electrode loss, and electrode surface reversal.

[0232] Server 240 can generate an overlay roll map in which the pattern indicator data and coordinate data of each process's roll map are corrected with the same numerical values ​​based on the inter-process monitoring data to which each data corresponds. Such an overlay roll map allows for an intuitive understanding of multiple processes and can be considered an intermediate roll map, a step up from a regular roll map.

[0233] The user device 300 can display a visualized role map VRM. The user device 300 may be any device for communicating with the server system 200, such as a workstation computer, notebook computer, laptop computer, desktop computer, tablet, smartphone, or other mobile device, and a wearable device. The user device 300 may be configured to generate a request R1 for loading a role map or a request R2 for loading an intermediate role map. The user device 300 may be configured to transmit requests R1 and R2 to the server system 200. The user device 300 may include input tools for entering requests R1 and R2 and a display device for displaying the visualized role map VRM.

[0234] Servers 210, 220, 230, 240, and 250 can be physical or cloud servers. Servers 210, 220, 230, 240, and 250 can include a variety of APIs (Application Programming Interfaces) for storing data in databases and other data management tools.

[0235] The servers, controllers, devices, units, etc., disclosed in connection with various embodiments, and the various components included herein, can be embodied by one or more microprocessors and / or one or more application-specific integrated circuits (ASICs) that enable the embodiment of the methods and processes relating to this disclosure and run software or firmware, and / or one or more processors having circuits such as ASICs, individual electronic components (e.g., transistors) and microprocessors.

[0236] In some embodiments, components shown separately may be replaced by a single component. Furthermore, some of the displayed components may be additional or replaced by other components.

[0237] In various embodiments, one or more memories can store a set of instruction words that can be executed by one or more processors to perform one or more methods or processes based on the functions disclosed herein. One or more memories can communicate via one or more wires or buses, or wirelessly. One or more memories may be static or dynamic memories. One or more memories may include, but are not limited to, various types of volatile and non-volatile storage media, such as computer-readable storage media including random access memory, read-only memory, programmable read-only memory, electrically programmable read-only memory, electrically erasable read-only memory, and flash memory.

[0238] In one embodiment, one or more memories may include cache or random access memory for one or more processors. One or more memories may be cache memory, system memory, or other memory for one or more processors. Processing strategies may include multiprocessing, multitasking, and the like. According to various embodiments, the computer-readable storage medium described with respect to one or more memories may be non-temporary and may be tangible memory.

[0239] The present invention has been described in more detail above with reference to the drawings and embodiments. However, the configurations described in the drawings or embodiments described herein are merely one embodiment of the present invention and do not represent the entire technical concept of the present invention. Therefore, there may be a variety of equivalents and modifications that can be substituted for them at the time of filing. [Explanation of Symbols]

[0240] 10,1000 Battery Manufacturing Systems 100 Battery Manufacturing Equipment 111 Unwinder 113 Rewinder 115 Processing mechanism 121, 123 Second position measuring instrument (first rotary encoder, second rotary encoder) 125U, 125R First position measuring instrument 130 Measuring instruments and / or testing instruments 130P Processing Unit 130S Sensing Unit 140 controllers 200 Server Systems Servers 210, 220, 230, 240, and 250 300 user devices

Claims

1. A first step of acquiring pattern indicator data indicating the position of the pattern on an electrode sheet, as well as measurement data and / or inspection data, for an electrode sheet having a pattern in which coated and uncoated portions are repeatedly arranged. A second step involves associating the pattern indicator data with the measurement data and / or inspection data, A battery manufacturing method comprising a third step of generating inter-process monitoring data by associating the pattern indicator data with each of the multiple processes so that it corresponds to the same physical position on the electrode sheet.

2. Corresponding the aforementioned pattern indicator data to each process, 1) As the positions of the start and end portions of the electrode sheet are reversed between processes, the reversed pattern indicator data is made to correspond between processes. 2) As the corresponding surfaces of the electrode sheet are reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data is made corresponding between processes. 3) The battery manufacturing method according to claim 1, which is performed by at least one of the following actions: coordinating the pattern indicator data, which changes due to the loss of the electrode sheet that occurs during and / or between each process, with the process.

3. The operation described in 3) above is: The steps include displaying pattern indicator data that includes at least one portion removed due to loss of the electrode sheet as absolute pattern indicator data, The steps include displaying as relative pattern indicator data the pattern indicator data that excludes at least one portion removed due to loss of the electrode sheet, A battery manufacturing method according to claim 2, comprising the step of associating absolute pattern indicator data with relative pattern indicator data, wherein absolute pattern indicator data does not include at least one portion removed by the loss of the electrode sheet.

4. The battery manufacturing method according to claim 3, further comprising the step of associating relative pattern indicator data with a cell ID in the final step of the process.

5. The first step further includes the step of obtaining coordinate data that can continuously indicate the position of the electrode sheet, The second step further includes associating the coordinate data with the pattern indicator data and the measurement data and / or inspection data, The battery manufacturing method according to claim 1, further comprising the step of generating monitoring data based on the pattern indicator data, the coordinate data, and the measurement data and / or inspection data associated with the pattern indicator data and the coordinate data.

6. The previous third step is, i) A step of compressing the measurement data and / or inspection data based on the pattern indicator data, the coordinate data, and the measurement data and / or inspection data, ii) A battery manufacturing method according to claim 5, comprising at least one of the steps of: associating pattern indicator data for each process and / or associating coordinate data for each process to correspond to the same physical position on the electrode sheet;

7. The step of compressing the measurement data and / or inspection data is: A step of calculating representative values ​​for the measured and / or inspected values ​​of the respective measurement data and / or inspection data collected for the pattern indicator and coordinate data of the start and end portions of the electrode sheet, A battery manufacturing method according to claim 6, comprising at least one of the steps of determining a judgment value.

8. Corresponding pattern indicator data for each process, and / or coordinate data for each process, 1) As the positions of the start and end portions of the electrode sheet are reversed between processes, the reversed pattern indicator data and / or coordinate data are made to correspond between processes. 2) Corresponding between processes the pattern indicator data and / or the coordinate data which change due to the loss of the electrode sheet that occurs during and / or between processes, 3) The battery manufacturing method according to claim 6, wherein the method is carried out by at least one of the following: 3) Matching the inverted pattern indicator data and / or coordinate data between processes as the corresponding surfaces of the electrode sheet are reversed between processes according to the winding direction and unwinding direction of the electrode sheet.

9. The battery manufacturing method according to claim 5, wherein the pattern indicator data, the coordinate data, and the measurement data and / or inspection data are associated with each other based on the same time or time interval.

10. The aforementioned monitoring data is A roll map for each process, including pattern indicator data for each process and measurement data and / or inspection data for each process associated with the pattern indicator data, The battery manufacturing method according to claim 1, comprising at least one of the following: a roll map in which pattern indicator data for each process are displayed corresponding to each other so as to correspond to the same physical position on the electrode sheet.

11. A first position measuring instrument configured to generate pattern indicator data indicating the position of a pattern on an electrode sheet having a pattern in which coated and uncoated portions are repeatedly arranged, A measuring instrument and / or an inspector configured to collect measurement data and / or inspection data for the electrode sheet, The system includes the pattern indicator data and one or more processors configured to generate monitoring data for battery manufacturing based on the measurement data and / or inspection data associated with the pattern indicator data, A battery manufacturing system in which one or more processors are configured to generate inter-process monitoring data by correlating the pattern indicator data for each of a plurality of processes with respect to each other so as to correspond to the same physical position of the electrode sheet.

12. The one or more processors described above are: 1) As the positions of the start and end portions of the electrode sheet are reversed between processes, the reversed pattern indicator data is made to correspond between processes. 2) As the corresponding surfaces of the electrode sheet are reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data is made corresponding between processes. 3) Corresponding the pattern indicator data for each process to each other based on at least one of the following actions: 3) Corresponding the pattern indicator data, which changes due to the loss of the electrode sheet that occurs during and / or between each process, to each process.

13. In the operation of 3), The pattern indicator data including at least one portion removed due to the loss of the electrode sheet is displayed as absolute pattern indicator data. The pattern indicator data that excludes at least one portion removed due to the loss of the electrode sheet is displayed as relative pattern indicator data. The battery manufacturing system according to claim 12, configured to associate absolute pattern indicator data with relative pattern indicator data, wherein absolute pattern indicator data does not include at least one portion removed due to loss of the electrode sheet.

14. The battery manufacturing system according to claim 13, wherein one or more processors are configured to associate relative pattern indicator data in the final step of the process with a cell ID.

15. The system further includes a second position measuring instrument configured to generate coordinate data that can continuously indicate the position of the electrode sheet, The one or more processors described above are: The coordinate data is associated with the pattern indicator data and the measurement data and / or inspection data. The battery manufacturing system according to claim 11, configured to generate monitoring data based on the pattern indicator data, the coordinate data, and the measurement data and / or inspection data associated with the pattern indicator data and the coordinate data.

16. The one or more processors described above are: i) Compressed measurement data and / or inspection data based on the pattern indicator data, the coordinate data, and the measurement data and / or inspection data, ii) The battery manufacturing system according to claim 11, configured to generate at least one of the following: pattern indicator data for each process and / or coordinate data for each process, which are generated by associating them with the same physical position on the electrode sheet.

17. The one or more processors described above are: A step of calculating representative values ​​for the measured and / or inspected values ​​of the respective measurement data and / or inspection data collected for the pattern indicator and coordinate data of the start and end portions of the electrode sheet, The battery manufacturing system according to claim 16, configured to generate compressed measurement data and / or inspection data by at least one of the steps of determining a judgment value.

18. The battery manufacturing system according to claim 12, wherein the one or more processors are configured to associate the pattern indicator data, the coordinate data, and the measurement data and / or inspection data with each other based on the same time or time interval.

19. The one or more processors described above are: i) A roll map generation server that generates a roll map for each process, which includes pattern indicator data for each process and measurement data and / or inspection data for each process associated with the pattern indicator data. ii) A battery manufacturing system according to claim 11, configured to embody the function of at least one of the following servers: a roll map generation server that generates a roll map as inter-process monitoring data, wherein the pattern indicator data for each process corresponds to each other so as to correspond to the same physical position of the electrode sheet.

20. One or more non-temporary processor-readable media storing executable instructions, When the aforementioned executable instruction is executed by one or more processors, the one or more processors For an electrode sheet having a pattern in which coated and uncoated portions are repeatedly arranged, the steps include acquiring pattern indicator data indicating the position of the pattern on the electrode sheet, as well as measurement data and / or inspection data. The steps of associating the pattern indicator data with the measurement data and / or inspection data, One or more non-temporary processor-readable media that enable a battery manufacturing method, comprising the step of generating inter-process monitoring data by associating the pattern indicator data with each of a plurality of processes so as to correspond to the same physical position of the electrode sheet.

Images