Battery manufacturing method and battery manufacturing system

Abstract

According to exemplary embodiments of the present invention, a battery manufacturing method is provided. The manufacturing method includes: a first step of obtaining, for an electrode sheet having a pattern in which coating parts and non-coating parts are repeatedly arranged, pattern indicator data indicating the position of the pattern on the electrode sheet and measurement data and / or inspection data; a second step of associating the pattern indicator data with the measurement data and / or the inspection data, and a third step of generating inter-process monitoring data by making the pattern indicator data for each of a plurality of processes correspond to the same physical position of the electrode sheet.

Description

Battery manufacturing method and battery manufacturing system

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

[0002] This application claims the benefit of priority to Korean Patent Application No. 10-2024-0013083, filed on January 29, 2024, U.S. Patent Application No. 18 / 606685, filed on March 15, 2024, and Korean Patent Application No. 10-2025-0005035, filed on January 13, 2025, the entire contents of which are incorporated herein by reference.

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

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

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

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

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

[0008] A first step of acquiring pattern indicator data and measurement data and / or inspection data indicating the position of the pattern on an electrode sheet having a pattern in which a coated portion and an uncoated portion are repeatedly arranged;

[0009] A second step of associating the above pattern indicator data with the measurement data and / or inspection data; and

[0010] A third step of generating inter-process monitoring data may be included by corresponding the pattern indicator data for each process of the plurality of processes to correspond to the same physical location of the electrode sheet.

[0011] The pattern indicator data of each process can be matched by at least one of the following.

[0012] 1) As the positions of the start and end of the electrode sheet are reversed between processes, the reversed pattern indicator data is matched between processes.

[0013] 2) As the corresponding surface of the electrode sheet is reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data is matched between processes.

[0014] 3) The above pattern indicator data, which changes depending on the loss of the electrode sheet occurring during and / or between each process, is matched between processes.

[0015] The operation of the above 3) may include the following steps.

[0016] A step of displaying pattern indicator data including at least one portion removed by loss of the electrode sheet as absolute pattern indicator data;

[0017] A step of displaying relative pattern indicator data for pattern indicator data excluding at least one portion removed by loss of the electrode sheet;

[0018] A step of corresponding absolute pattern indicator data and relative pattern indicator data that does not include at least one portion removed by loss of the above electrode sheet.

[0019] The operation of the above 3) may include a step of associating the cell ID with the relative pattern indicator data in the final process among the processes.

[0020] The above first step further includes a step of acquiring coordinate data that can continuously indicate the position of the electrode sheet,

[0021] The second step further includes a step of associating the coordinate data with the pattern indicator data and the measurement data and / or inspection data,

[0022] The third step may further include a step of generating the 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.

[0023] The third step may include at least one of the following steps.

[0024] ⅰ) A step of compressing the measurement data and / or inspection data based on the pattern indicator data, the coordinate data, the measurement data and / or the inspection data.

[0025] ⅱ) A step of generating inter-process monitoring data by corresponding the pattern indicator data of each process and / or corresponding the coordinate data of each process so as to correspond to the same physical location of the electrode sheet.

[0026] The step of compressing the above measurement data and / or inspection data is:

[0027] It may include at least one of a step of calculating a representative value and / or a step of determining a judgment value for each measurement value and / or inspection value of the collected measurement data and / or inspection data for the pattern indicator and coordinate data of the start and end portions of the electrode sheet.

[0028] The pattern indicator data of each process can be matched or the coordinate data of each process can be matched by at least one of the following.

[0029] 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 matched between processes.

[0030] 2) The pattern indicator data and / or coordinate data that change according to the loss of the electrode sheet that occurs during and / or between each process are matched between processes.

[0031] 3) As the corresponding surface of the electrode sheet is reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data and / or the coordinate data are corresponded between processes.

[0032] The above pattern indicator data, coordinate data, measurement data and / or inspection data may be related to each other based on the same time or time interval.

[0033] The above monitoring data is,

[0034] A roll map of each process including pattern indicator data of each process and measurement data and / or inspection data of each process associated with the pattern indicator data.

[0035] The roll map may include at least one of the pattern indicator data of each process displayed corresponding to each other so as to correspond to the same physical location of the electrode sheet.

[0036] As another aspect of the present invention, the battery manufacturing system comprises:

[0037] A first position measuring device configured to generate pattern indicator data indicating a pattern position on an electrode sheet having a pattern in which a coated portion and an uncoated portion are repeatedly arranged;

[0038] A measuring device and / or an inspection device configured to collect measurement data and / or inspection data for the electrode sheet; and

[0039] One or more processors configured to generate monitoring data for battery manufacturing based on the pattern indicator data and measurement data and / or inspection data associated with the pattern indicator data,

[0040] The one or more processors may be configured to generate inter-process monitoring data by corresponding the pattern indicator data for each process of the plurality of processes to each other so as to correspond to the same physical location of the electrode sheet.

[0041] The one or more processors may be configured to correspond pattern indicator data of each process based on at least one of the following operations:

[0042] 1) As the positions of the start and end of the electrode sheet are reversed between processes, the reversed pattern indicator data is matched between processes.

[0043] 2) As the corresponding surface of the electrode sheet is reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data is matched between processes.

[0044] 3) The above pattern indicator data, which changes depending on the loss of the electrode sheet occurring during and / or between each process, is matched between processes.

[0045] The above one or more processors, in the operation of 3),

[0046] For pattern indicator data including at least one portion removed by loss of the electrode sheet, display it as absolute pattern indicator data;

[0047] Displaying relative pattern indicator data for pattern indicator data that excludes at least one portion removed by loss of the electrode sheet;

[0048] It can be configured to correspond absolute pattern indicator data and relative pattern indicator data that do not include at least one portion removed by loss of the above electrode sheet.

[0049] The above one or more processors may be configured to associate the cell ID with the relative pattern indicator data in the final process among the processes in the operation of the above 3).

[0050] The system may further include a second position measuring device configured to generate coordinate data capable of continuously indicating the position of the electrode sheet,

[0051] One or more of the above processors,

[0052] Associate the above coordinate data with the pattern indicator data and the measurement data and / or inspection data,

[0053] The monitoring data may be configured to be generated 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.

[0054] The one or more processors may be configured to generate at least one of the following:

[0055] ⅰ) Compressed measurement data and / or inspection data based on the pattern indicator data, the coordinate data, the measurement data and / or the inspection data;

[0056] ⅱ) Inter-process monitoring data generated by corresponding the pattern indicator data of each process to correspond to the same physical location of the electrode sheet, and / or by corresponding the coordinate data of each process.

[0057] One or more of the above processors,

[0058] It can be configured to generate compressed measurement data and / or inspection data by at least one of the steps of calculating a representative value and / or determining a judgment value for each measurement value and / or inspection value of the collected measurement data and / or inspection data for the pattern indicator and coordinate data of the start and end portions of the electrode sheet.

[0059] The one or more processors may be configured to correlate the pattern indicator data, coordinate data, measurement data and / or inspection data with each other based on the same time or time interval.

[0060] The above system may further include a controller that controls movement of the electrode sheet, and the association of the pattern number data with the measurement data and / or inspection data may be performed by the measuring device and / or inspection device, or the controller.

[0061] The above system may further include a controller that controls movement of the electrode sheet,

[0062] The association of the above pattern number data and the above coordinate data with the above measurement data and / or inspection data can be performed by the measuring instrument and / or inspection instrument, or the controller.

[0063] The one or more processors may be configured to implement the functions of at least one of the following servers:

[0064] i) A roll map generation server that generates 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.

[0065] ⅱ) A roll map generation server that generates a roll map in which pattern indicator data of each process is displayed in correspondence with each other so as to correspond to the same physical location of the electrode sheet as the above process-to-process monitoring data.

[0066] According to the present invention, monitoring data for battery manufacturing can be generated using positional data (pattern indicator data, coordinate data) reflecting the pattern locations of patterned electrodes. Therefore, battery manufacturing processes can be monitored to ensure they correspond to the actual state of the patterned electrodes, thereby improving quality traceability and data integrity.

[0067] The present invention also compresses measurement data and / or inspection data to generate monitoring data. Therefore, server resources allocated to generating and storing monitoring data can be reduced.

[0068] The present invention also generates inter-process monitoring data by matching pattern indicator data acquired in each process to the location of the same physical electrode sheet. This inter-process monitoring data allows for intuitive identification of changes in electrode length or quality of each electrode between multiple processes, based on the corresponding electrode location. Furthermore, any problems with electrode quality can be quickly and easily tracked.

[0069] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0070] Figure 1 illustrates a battery manufacturing system according to exemplary embodiments.

[0071] Figure 2 shows a visualized roll map and pattern electrodes.

[0072] Figure 3 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0073] Figure 4 shows a roll map of a pattern electrode in which loading amount measurement data is arranged over time.

[0074] FIG. 5 illustrates process monitoring data generated by a battery manufacturing method according to exemplary embodiments.

[0075] Figure 6 is a schematic diagram showing that the corresponding surfaces of the electrode sheet are reversed depending on the winding direction and the winding direction of the electrode sheet.

[0076] Figure 7 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0077] Figure 8 shows a roll map of a pattern electrode with a pattern indicator and a sub-pattern indicator displayed.

[0078] Figure 9 shows an example of a roll map that displays pattern indicator data and coordinate data on a pattern electrode.

[0079] Figure 10 illustrates process monitoring data generated by a battery manufacturing method according to exemplary embodiments.

[0080] Fig. 11 illustrates a battery manufacturing system according to exemplary embodiments.

[0081] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0082] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0083] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0084] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0085]

[0086] Fig. 1 shows a battery manufacturing system (10) according to an exemplary embodiment.

[0087] Referring to FIG. 1, the battery manufacturing system (10) may include a coating device (11), a roll pressing device (12), a slitting device (13), a winding device (14), an event integration facility (EIF) (1010), a server system (200), and a display device (190).

[0088] The battery manufacturing system (10) may be configured to manufacture battery cells (e.g., cylindrical battery cells, square battery cells, or pouch cells) by performing a series of roll-to-roll processes. An electrode sheet unwound from an input electrode roll may be processed by any one of a die coater of a coating device (11), pressure rolls of a roll pressing device (12), and a slitting knife of a slitting device (13), and the processed electrode sheet may be wound onto an electrode roll. Accordingly, the processing of the coating device (11), the roll pressing device (12), and the slitting device (13) for producing battery electrodes may be referred to as a roll-to-roll process. The winding device (14) can wind together a first electrode sheet (e.g., a cathode sheet) unwound from a first electrode roll (e.g., a cathode roll), a second electrode sheet (e.g., anode sheet) unwound from a second electrode roll (e.g., anode roll), and one or more separator sheets unwound from one or more separator rolls.

[0089] The intermediary server (EIF) (1010) may be a device for communication between process controllers of a manufacturing facility and a server system (200). Accordingly, process event data generated from a coating device (11), a roll pressing device (12), a slitting device (13), and a winding device (14) may be received by the intermediary server (EIF) (1010), and the received process event data may be transmitted to the server system (200).

[0090] If necessary, each process controller may communicate directly with the server system (200). Accordingly, process event data generated from the coating device (11), roll pressing device (12), slitting device (13), and winding device (14) may be transmitted to the server system (200).

[0091] The server system (200) can generate monitoring data for battery manufacturing. Typically, the monitoring data can include a roll map containing process event data. The roll map data can include data indicating process events and coordinate values ​​matched with the data. The coordinate values ​​can indicate a location on an electrode. The server system (200) can transmit a visualization command to the display device (190), and the display device (190) can visualize the roll map and display a visualized roll map (VRM).

[0092] The server system (200) can create and store a roll map of each process (e.g., coating process, roll pressing process, or slitting process).

[0093] A roll map may be a type of simulated electrode that mimics a moving real electrode (e.g., a real electrode that moves between an unwinder and a rewinder).

[0094] Referring back to FIG. 1, the electrode assembly manufactured by winding in the winding device (14) may be transported and accommodated within a case such as a can (15). The can may be assigned a can ID, which is a separate can identification information, and this can ID is a type of battery cell ID. Accordingly, historical data on the manufacture of the battery cell may be retrieved based on the can ID.

[0095] Figure 2 shows a visualized roll map and pattern electrodes.

[0096] In Fig. 2, arrow X indicates the longitudinal direction (driving direction) of the electrode (roll map), and arrow Y indicates the width direction of the electrode (roll map).

[0097] The visualized roll map (VRM) of Fig. 2(a) may include a plurality of visualization sections (VS1, VS2, VS3, VS4, VS5, VS6) corresponding to a plurality of sections of the electrode sheet. Each of the plurality of visualization sections (VS1, VS2, VS3, VS4, VS5, VS6) may include a start coordinate, an end coordinate, and a color.

[0098] The representative value of the coordinate-related measurement data (CMD) of the visualization sections (VS1, VS2, VS4, VS6) can be displayed in color (C1), the representative value of the coordinate-related measurement data (CMD) of the visualization section (VS3) can be displayed in color (C2), and the representative value of the coordinate-related measurement data (CMD) of the visualization section (VS5) can be displayed in color (C3).

[0099] Color (C1) may indicate that the representative value of the visualization sections (VS1, VS2, VS4, VS6) is normal, color (C2) may indicate that the representative value of the visualization section (VS3) is excessive, and color (C3) may indicate that the representative value of the visualization section (VS3) is very excessive. Color (C4) may indicate that the representative value is insufficient, and color (C5) may indicate that the representative value is very insufficient.

[0100] In this way, the roll map can express the position of the electrode as a coordinate and visualize the measurement data (e.g., electrode slurry loading amount data) for each position, so the efficiency of electrode production management can be improved by using the roll map and the data included therein.

[0101] Figure 2(b) shows a pattern electrode having a pattern in which coated and uncoated portions are repeatedly arranged along the longitudinal direction.

[0102] The pattern electrode is slit in the width direction based on the non-coated portion (1) between the coated portions (2) in a subsequent process. The slit coated portion (2) can be laminated with electrode coating portions and separators of different polarities to form an electrode assembly, or can be rolled up together with electrode coating portions and separators of different polarities to form a jelly roll-shaped electrode assembly.

[0103] In particular, a pattern electrode used for a small battery can be formed into a plurality of electrode lanes (L1 to L20) by being slit in the width direction and at the same time along the length direction of the pattern electrode.

[0104] Unlike conventional electrodes in which the coating portion is formed continuously along the longitudinal direction, patterned electrodes have coating portions formed intermittently. Therefore, a roll map method such as Fig. 2(a), which continuously represents the longitudinal position of the electrode with a length coordinate, may not be suitable for patterned electrodes. For example, the uncoated portion of the patterned electrode has a measurement value such as a loading amount of 0, and is not a significant portion that affects actual battery performance. Therefore, there is less need to display the measurement data and coordinates in detail up to this portion. In addition, for patterned electrodes, electrode assemblies are produced according to the length and width of the coating portion (2) included in the pattern. That is, electrode production performance processing is aggregated by the number of coated portions (2) or patterns including the coated portion (2). In this way, patterned electrodes need to be produced and managed based on the pattern, and positional data needs to be assigned according to the characteristics of the patterned electrode in which the coated portion and uncoated portion are intermittently coated. The present invention provides a battery manufacturing method and a battery manufacturing system capable of generating monitoring data based on pattern indicator data, which is position data suitable for such pattern electrodes.

[0105]

[0106] (Example 1)

[0107] Figure 3 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0108] Figure 4 shows a roll map of a pattern electrode in which loading amount measurement data is arranged over time.

[0109] FIG. 5 illustrates process monitoring data generated by a battery manufacturing method according to exemplary embodiments.

[0110] Figure 6 is a schematic diagram showing that the corresponding surfaces of the electrode sheet are reversed depending on the winding direction and the winding direction of the electrode sheet.

[0111] Referring to FIG. 3, the battery manufacturing method of the present invention includes a first step (P110) of acquiring pattern indicator data indicating a pattern position on an electrode sheet, and measurement data and / or inspection data for the electrode sheet when the electrode sheet having a pattern in which a coated portion and an uncoated portion are repeatedly arranged moves in a plurality of processes.

[0112] As described above, in a plurality of processes (coating, roll pressing, slitting, etc.) for producing a patterned electrode, the electrode sheet can be moved along the 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 onto the unwinder. The electrode sheet unwound from the unwinder can be moved after undergoing a predetermined process and wound onto a rewinder to become a second electrode roll. Alternatively, the electrode sheet can be moved along the longitudinal direction by a conveyor or other driving means.

[0113] A pattern may refer to one coated portion (2) and one uncoated portion (2) continuous to the coated portion. If only the coated portion or the uncoated portion is regarded as a pattern and a pattern indicator is assigned, the overall state of the pattern electrode cannot be completely expressed. Referring to Fig. 2(b), uncoated portions (1) are located on both sides of one coated portion (2). Therefore, one pattern may include one coated portion and one uncoated portion on one side, or one coated portion and one uncoated portion on the other side. The pattern indicator may be acquired by counting the pattern number to increase or decrease, or may be identified by a combination of letters, characters, symbols, codes, or numbers and letters.

[0114] Pattern indicator data can be acquired by counting so that the pattern indicator increases or decreases for each of the above patterns.

[0115] For example, the pattern indicator data may include pattern numbers assigned to each pattern. The pattern numbers may be counted, for example, by a pattern counter. Accordingly, the pattern indicator data may be acquired by the pattern counter. Each counted pattern number represents the position of the pattern on the moving electrode sheet. Accordingly, the pattern counter may be a position measuring device that measures the position of the pattern electrode. When recognizing the start and end of a pattern, the pattern counter may count the pattern number of one pattern. However, it should be understood that the pattern counter may count pattern numbers associated with multiple patterns. The pattern counter counts pattern numbers intermittently. That is, the pattern counter may count pattern numbers for one pattern or multiple patterns. In the present specification, a pattern counter that measures an intermittent position (pattern number) may be referred to as a first position measuring device. An encoder or the like that measures a continuous position (coordinate) as described below may be referred to as a second position measuring device.

[0116] The length of a single pattern may vary depending on the type or model of the pattern electrode. The length of a single pattern specified for a specific pattern electrode may be referred to as the set pattern pitch. In other words, the pattern pitch obtained by adding the length of a single set coated portion and the length of a single set uncoated portion may be referred to as the set pattern pitch.

[0117] If the length (pitch) of a pattern is different from the set pattern pitch, the pattern becomes an abnormal pitch pattern. According to one embodiment of the present invention, a step of determining a pattern with an abnormal pitch may be further included by comparing the set pattern pitch with the length of each pattern.

[0118] The length of each pattern and / or the length of the coated portion and the uncoated portion included in the pattern can be derived by multiplying the differences in boundary detection time points of the coated portion and the uncoated portion included in each pattern by the moving speed of the electrode sheet.

[0119] The above pattern counter may include a pitch sensor and a trigger board. The pitch sensor may measure the length of each pattern, i.e., the pitch of each pattern.

[0120] According to an exemplary embodiment, the pitch sensor may be or include a photoelectric sensor. The photoelectric sensor is composed of a light emitter and a light receiver. When light emitted from the light emitter is blocked or reflected by an object to be detected, the amount of light reaching the light receiver changes. The light receiver detects this change, converts it into an electrical signal, and outputs it. The amount of light emitted from the light emitter reaches the light receiver changes based on the boundary between the coated portion (2) and the uncoated portion (1) on the pattern electrode. Accordingly, 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 may be used as the photoelectric sensor. An optical fiber sensor uses an optical fiber instead of a lens of a photoelectric sensor, and since the optical fiber, which is a detection portion, has no electrical parts at all, it has the advantage of excellent environmental resistance such as noise resistance.

[0121] When the photoelectric sensor included in the pitch sensor detects the boundary between the coated and uncoated portions, the boundary detection time can also be recorded simultaneously. Accordingly, by multiplying the differences (times) between the boundary detection times of the coated and uncoated portions included in each pattern by, for example, the moving speed of the electrode sheet, the distance between the boundary lines can be calculated. The pitch sensor or the pattern counter may include a calculation unit for calculating the time and speed.

[0122] Referring to Fig. 4, the process of finding an abnormal pitch pattern by a pattern counter is described.

[0123] When the electrode sheet runs in the longitudinal direction X (driving direction MD), the pattern counter can detect the boundaries (BL1, BL2, BL3) of the coated portion and the uncoated portion.

[0124] BL1 is the boundary line of the first coated portion (2) below the first uncoated portion (1) at the top of Fig. 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.

[0125] For example, the pattern counter can count to increase the pattern number by 1 when detecting BL1 and BL3 for each pattern.

[0126] The pattern counter can obtain the length of the first coating section by multiplying the difference (time) between the BL1 detection point and the BL2 detection point and the moving speed of the electrode sheet.

[0127] The pattern counter can obtain the length of the second uncoated portion by multiplying the difference (time) between the BL2 detection point and the BL3 detection point by the moving speed of the electrode sheet.

[0128] The pattern counter can obtain the length (pitch) of the first pattern (#1) by multiplying the difference (time) between the BL1 detection point and the BL3 detection point by the moving speed of the electrode sheet. In the same way, the pattern counter can obtain the length of the second pattern (#2).

[0129] In addition, a pattern with an abnormal pitch (length) can be determined by comparing the length of the pattern with the set pattern pitch (PP). In Fig. 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, a pattern with a large difference from the set pattern pitch can be determined as an abnormal pattern. The electrode portion of the abnormal pattern can be removed in a subsequent process.

[0130] 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 increase the count value for each length of each received pattern. The trigger board can increase the BCD (Binary Coded Decimal) code by 1 each time the count value for each pattern length increases. The trigger board can convert the count value for each generated pattern length into the form of a BCD code and transmit it to the controller of each process or the server of the battery manufacturing system. The pattern counter (trigger board) can count so that the pattern indicator increases for each pattern (so-called ascending order). Alternatively, it can count so that the pattern indicator decreases for each pattern (so-called descending order). However, the counting method is not limited to this. It is sufficient to be able to count patterns so that the position of the pattern can be specified in any way. The pattern indicator may be a number, letter, character, symbol, sign, code, and / or a combination of numbers and letters.

[0131] Electrode specification data (ESD) may include model information, recipe, and pattern pitch of the electrode sheet. Electrode specification data (ESD) may include all matters related to processing of the electrode sheet, such as the number of lots being processed in the current process, the number of coating lanes formed on the electrode sheet, process conditions including temperature, humidity, and pressure, process parameters including the moving speed of the electrode sheet, the discharge amount of the coating die, and the pressure of the pressurizing rolls. Electrode specification data (ESD) may be stored in a controller or server system of each process. The pattern counter can download information about the set pattern pitch from the controller or server system and find a pattern with an abnormal pitch.

[0132]

[0133] Measurement data and / or inspection data can be acquired for the above electrode sheet. Measurement data and / or inspection data refer to all data that can be acquired through measurement or inspection of the pattern electrode. Measurement data and inspection data can be acquired by a measuring device and an inspection device that measure and inspect the electrode.

[0134] The measurement data may include measurement results expressed in numerical values. For example, the measurement data may include dimensional data of the electrode sheet, such as thickness and width, data on the loading amount of the coating material on the electrode sheet, and data on mismatch between the coating lanes on the upper surface of the electrode sheet and the coating lanes on the lower surface of the electrode sheet. As a non-limiting example, the measuring device may be any one of a web gauge and a thickness gauge from Thermofisher Scientific.

[0135] The inspection data may include judgments on the quality of a portion of the electrode sheet and process events. For example, the inspection data may include data on the appearance of the electrode sheet collected by an image-based inspection device such as a vision machine, data on short circuits and seams of the electrode sheet, data on a portion of the electrode sheet on which sampling inspection has been performed, data on a portion of the electrode sheet scheduled for scrapping, data on reference points indicating the position of the electrode sheet, and defect data such as pinhole defects, crater defects, and line defects. The inspection device may be any one of a color sensor, a seam sensor, a reference point sensor, and a vision machine.

[0136] The above pattern indicator data, measurement data, inspection data, and coordinate data described below may be time-series data. The pattern indicator data includes pattern indicators and data regarding the times or time intervals at which the pattern indicators were acquired. The times or time intervals may be matched with the pattern indicators.

[0137] The above measurement data and / or inspection data include measurement values ​​and / or inspection values, and data regarding the time or time interval at which the measurement values ​​and / or inspection values ​​were acquired. The time or time interval may be matched to the measurement values ​​and / or inspection values.

[0138] That is, pattern indicators, coordinate values ​​of coordinate data, measurement values, and inspection values ​​can be aligned in time.

[0139] Accordingly, the pattern indicator data, coordinate data, measurement data and / or inspection data can be related to each other based on the same time or time interval at which each data was acquired.

[0140] Referring to FIG. 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.

[0141] For example, pattern indicators of pattern indicator data and the above measurement values ​​and / or test values ​​can be related to each other based on the same time or time interval.

[0142] In Fig. 4, the loading amounts Rt0 to Rt10 of the coating material measured at each of the measurement points t0 to t10 are displayed.

[0143] At time t0, the boundary line BL1 between the coated and uncoated portions 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 of the pattern of pattern number #1 are t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, and t10. The loading amount measurement values ​​corresponding to the pattern of pattern number #1 and corresponding to the above times are Rt0, Rt1, Rt2, Rt3, Rt4, Rt5, Rt6, Rt7, Rt8, Rt9, and Rt10.

[0144] In addition, the loading amounts Rt0 to Rt8 measured between the time intervals t0 to t8 become measurement values ​​associated with the coated portion between BL1 and BL2. In addition, the loading amounts Rt8, Rt9, and Rt10 measured between the time intervals t8 to t10 become measurement values ​​associated with the uncoated portion between BL2 and BL3.

[0145] Therefore, based on the same time interval t0 to t10, the pattern electrode of pattern number #1 and the loading amount Rt0 to Rt10 can be associated.

[0146] Additionally, the starting and ending points of the connecting tape T1 located on the coating portion of pattern number #2 can be detected by a seam sensor. The seam measurement data includes a seam measurement signal and the starting and ending measurement times. In this case, the seam measurement data can be associated with a pattern of pattern number #2 that matches the starting and ending times of detecting T1.

[0147] As described above, the pattern counter can obtain the length of each pattern and the coated and uncoated portions belonging to each pattern by multiplying the differences in the detection time points of the boundary between the coated and uncoated portions by the moving speed of the electrode sheet. By the same principle, if there is an appropriate calculation tool, it is also possible to obtain the length of the coated or uncoated portion corresponding to each measurement section by multiplying the differences (time) in the measurement time points of each measurement value by the moving speed of the electrode sheet. The calculation tool can be provided in, for example, a pattern counter, a process controller, a measuring instrument, or an inspection device.

[0148] The above pattern indicator data can be associated with measurement data and / or inspection data in the controller of the processing process in which the electrode sheet is processed. In this case, the measurement data and inspection data acquired from the measuring device and / or inspection device can be transmitted to the controller, and the pattern indicator data acquired from 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.

[0149] Alternatively, the association of the pattern indicator with the measurement data and / or inspection data may be performed in the measuring instrument and / or inspection device. In this case, the pattern indicator data acquired from the pattern counter may be transmitted to the measuring instrument and / or inspection device directly or through a controller. The measuring instrument and / or inspection device may associate the pattern indicators of the measurement data and inspection data acquired at the same time or time interval and the pattern indicator data.

[0150] Referring to FIG. 3, the battery manufacturing method of the present invention includes a 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.

[0151] As described above, by assigning pattern indicators to pattern electrodes, the positions and numbers of patterns of the pattern electrodes can be easily specified. This makes it easy to understand the production performance of the pattern electrodes. In addition, by associating the measurement data and / or inspection data acquired for the pattern electrodes with the pattern indicator data, the status of each pattern, whether the electrodes are broken, whether there are defects, etc. can be easily understood. A roll map is one of the monitoring data in the electrode manufacturing process. As shown in Fig. 4, a roll map for a pattern electrode may include pattern indicator data including pattern indicators and measurement data or inspection data associated with the pattern indicators. The measurement data and / or inspection data is a type of process event data generated in each process. Since the roll map is cumulatively generated for workpieces, parts, semi-finished products, and finished products of unit processes, it enables tracking of the process history for shipped products (e.g., battery cells, battery modules, or battery packs). For example, a shipped product may include a cell ID that can be used to trace the process history, if necessary.

[0152]

[0153] Referring to FIG. 3, the step of generating the monitoring data may include at least one of the following steps.

[0154] ⅰ) A step (P131) of generating monitoring data by compressed measurement data and / or inspection data based on the pattern indicator data and the measurement data and / or inspection data.

[0155] ⅱ) A step (P132) of generating inter-process monitoring data by corresponding the pattern indicator data of each process to each other so that they correspond to the same physical location of the electrode sheet.

[0156] As illustrated in FIG. 4, multiple measurement values ​​can be assigned to a single pattern. In FIG. 4, 10 measurement values ​​are associated with each pattern, but depending on the type of measuring instrument or tester, a greater number of measurement values ​​and / or test values ​​may be associated. As such, as the volume of measurement data and / or test data increases, a load is placed on the server system generating the monitoring data. This may slow down the data processing speed. To reduce the data volume and increase the data processing speed, the measurement data and / or test data can be compressed.

[0157] For example, a processing unit provided by a measuring instrument and / or an inspection device 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. The compressed measurement data and / or inspection data has a smaller size than the measurement data and / or inspection data associated with the pattern indicator data. The resources of a server generating monitoring data can be reduced by using the compressed measurement data and / or inspection data.

[0158] The compressed measurement data and / or inspection data may include representative values ​​of the measurement values ​​and / or inspection values ​​of the measurement data and / or inspection data, pattern indicator data of the start and end points of the electrode sheet portion where the measurement data and / or inspection data were collected. The compressed measurement data may further include a time stamp indicating the collection date and time of the measurement data and / or inspection data of each pattern or a plurality of patterns, a measuring instrument and / or inspection instrument ID, and a facility ID.

[0159] For example, the processing unit of the measuring device and / or the tester can produce a representative value of the measurement data and / or test data for each pattern of the electrode sheet. The representative value can include at least one of the average, standard deviation, median, maximum, and minimum values ​​of the measurement data and / or test data for each pattern.

[0160] For example, if the loading amount data corresponding to pattern indicator #1 has 10 measurement values ​​corresponding to one scanning of the loading amount measuring device, the compressed measurement data may include a single representative value calculated based on the 10 measurement values. Accordingly, 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 may represent multiple patterns in addition to representing one pattern. That is, multiple patterns may be grouped and the measurement data and / or inspection data acquired for each group may be compressed to obtain a single representative value. In this case, among the measurement values ​​included in each pattern, measurement values ​​below a certain value may be regarded as values ​​measured in the uncoated portion of the pattern, for example, and may be excluded when calculating the representative value. That is, the representative value may be calculated from measurement values ​​above a certain value among the measurement values ​​included in each pattern.

[0161] In this case, based on the pattern indicator data, pattern indicators of the start and end points of each pattern of the electrode sheet from which the measurement data and / or inspection data are collected can be determined. Alternatively, pattern indicators of the start and end points of the electrode sheet portions corresponding to a plurality of patterns grouped by group can be determined. The pattern indicators of the start and end points of the compressed measurement data and / or inspection data are substantially the same as the pattern indicators of the start and end points of the measurement data and / or inspection data associated with the pattern indicator data.

[0162] Measurement data and / or inspection data can be processed in a set manner to determine a judgment value for each pattern or a plurality of patterns of the electrode sheet. If a measurement amount of a coating material on the electrode sheet (e.g., a loading amount on the electrode sheet or a thickness of the electrode sheet) is within a set range including an upper limit and a lower limit, the corresponding portion of the electrode sheet can be determined as a good product. If the measurement amount is less than the lower limit or greater than the upper limit, the corresponding portion of the electrode sheet can be determined as a defective product.

[0163] The processing unit may be configured to transmit compressed measurement data and / or inspection data directly or via a process controller to a server system.

[0164] A server system or a server included in the server system (e.g., a Manufacturing Execution System (MES)) can generate monitoring data (e.g., a roll map) containing the compressed measurement data and / or inspection data. In addition to generating the roll map, the MES performs various tasks for managing battery production. Therefore, when generating the roll map based on the compressed measurement data and / or inspection data, the MES resources allocated for generating and storing the roll map can be reduced.

[0165] FIG. 5 illustrates process monitoring data generated by a battery manufacturing method according to exemplary embodiments.

[0166] Figure 6 is a schematic diagram showing that the corresponding surfaces of the electrode sheet are reversed depending on the winding direction and the winding direction of the electrode sheet.

[0167] The above monitoring data may include a roll map of each process including pattern indicator data of each process and measurement data and / or inspection data of each process associated with the pattern indicator data. As illustrated in Fig. 1, a roll map may be generated for each of a plurality of processes. For example, when a first process (coating process), a second process (roll pressing process), and a third process (slitting process) are sequentially performed, a roll map may be generated for each process. The roll map may exist not only in a form that mimics an electrode sheet as in Fig. 2(a), but also in various forms such as graphs and diagrams that can visually display data on the roll map.

[0168] As described above, the electrode sheet goes through multiple roll-to-roll processes, and a roll map can be created for each roll-to-roll process.

[0169] However, due to the nature of the roll-to-roll process, the end point of the electrode sheet wound in the first process (preceding process, e.g., coating process) becomes the beginning point when unwound in the second process (subsequent process, e.g., roll pressing process). In other words, the beginning and end points of the electrode sheet are reversed between processes. Consequently, the pattern indicator data acquired in each process are also reversed between processes.

[0170] Additionally, the electrode sheet is removed during and / or between multiple processes. Depending on the occurrence of electrode sheet loss, the corresponding locations on the electrode sheet corresponding to the pattern indicator data acquired in each process may vary.

[0171] Additionally, depending on the winding and unwinding directions of the electrode sheet, there are cases where the corresponding surfaces of the electrode sheet are reversed between processes. For example, in the first process (preceding process, e.g., coating process), the upper surface of the electrode sheet may be reversed to the lower surface in the second process (subsequent process, e.g., roll pressing process).

[0172] Due to the above-mentioned start / stop reversal, electrode sheet loss, and electrode sheet surface reversal, pattern indicator data corresponding to the same electrode sheet location becomes inconsistent across multiple processes. Consequently, even if a roll map, which is monitoring data, is created for each process, it is difficult to compare the roll maps of each process on the same level, making it difficult to trace the cause of the problem occurring in the electrode sheet.

[0173] According to an exemplary embodiment with reference to FIG. 3, the step of generating the monitoring data may further include a step (P132) of generating inter-process monitoring data by corresponding pattern indicator data of each process to each other so as to correspond to the same physical location of the electrode sheet.

[0174] Figure 5 illustrates a process of generating inter-process monitoring data by corresponding each pattern indicator data of the first to third processes to reflect the electrode's start / stop reversal and electrode loss.

[0175] Figure 5 also shows the pattern indicator data along with the time interval during which the pattern indicator data was acquired.

[0176] In the first process, electrodes with pattern numbers from #1 to #9 are arranged in reverse order in the second process. In addition, the pattern numbers of the second process are arranged in reverse order again in the third process. Since the positions of the start and end points of the electrode sheet are reversed between processes, in order to compare the data of each process at the position of the same actual electrode sheet, it is necessary to correspond the reversed pattern number data as shown in Fig. 5.

[0177] In addition, Fig. 5 shows the parts removed in each process. When the pattern indicator data is shown including the parts removed as loss in each process, it is shown as 'absolute', and when the pattern indicator data is shown excluding the removed parts, it is shown as 'relative'. When the pattern indicator data is regarded as a type of coordinate indicating an intermittent position, the 'absolute' can be regarded as an 'absolute coordinate' and the 'relative' can be regarded as a 'relative coordinate'. The electrode sheet is removed due to defects, breakage, etc. in each process, or a process such as deleting a part with uneven quality is performed between each process. Fig. 5 corresponds the pattern indicator data between processes in consideration of the loss of the electrode sheet that occurs during and / or between each process.

[0178] For example, in the first process, the 'absolute' pattern indicator data of #1 to #9 only remain #2, #3, #6, #7, and #8 when considering the loss that occurred during the process. When this data is corrected to the 'relative' pattern indicator data, it becomes #1 to #5. That is, the 'absolute' pattern indicator of #2 in the first process corresponds to the 'relative' pattern indicator of #1. These pattern indicators are acquired at the same time interval T2. In this way, by reflecting the loss in each process and considering the reversal of the beginning and end parts between processes, the pattern indicator data corresponding to the position of the same actual electrode sheet in each process can be matched.

[0179] The battery cells manufactured from the remaining surviving electrodes through the first to third processes can be assigned cell IDs KF1 and KF2. In this case, the pattern indicator data for each process corresponding to each cell ID is as shown in the leftmost diagram of Fig. 5.

[0180] In addition, the pattern indicator data of each process is associated with the measurement data and / or inspection data as shown in Fig. 4. Therefore, by selecting a specific pattern indicator by referring to the roll map or the data included in the roll map, the measurement data and / or inspection data corresponding to the pattern indicator can be identified. For example, in Fig. 5, the measurement data and / or inspection data of each process associated with the pattern indicator corresponding to the cell IDs KF1 and KF2 can be intuitively identified.

[0181] Figure 6 shows that the surface of the electrode sheet is reversed between processes depending on the winding direction and the unwinding direction of the electrode sheet.

[0182] In Fig. 6, the electrode sheet (ES) is a double-sided electrode sheet having a coating material on both sides.

[0183] The starting point of the electrode sheet is marked with S and the ending point with E. The upper surface of the electrode sheet is marked with ①, the lower surface with ②, and a black dot is marked on the upper surface ① for comparison. There are four cases in which the electrode roll manufactured by being wound in the rewinder in the preceding process is unwound in the subsequent process. In all four cases, the starting and ending points of the electrode sheet are reversed between the preceding and subsequent processes.

[0184] For example, if the winding direction of the rewinder in the preceding process is upward winding (clockwise winding) and the unwinding direction of the subsequent process is upward winding (clockwise winding), the starting part (S) and the ending part (E) are reversed. In this case, the upper surface (①) and the back surface (②) of the electrode sheet (ES) are not reversed.

[0185] In the preceding process, when the rewinder winding direction is upward winding and in the subsequent process, the unwinder unwinding direction is downward winding (counterclockwise unwinding), the upper surface (①) and the back surface (②) of the electrode sheet are simultaneously reversed along with the start and end reversal of the electrode sheet.

[0186] In the preceding process, when the rewinder winding direction is downward winding (winding counterclockwise) and in the subsequent process, the unwinder unwinding direction is upward winding, the electrode sheet (ES) is reversed from beginning to end, and the upper surface (①) and the back surface (②) of the electrode sheet are also reversed simultaneously.

[0187] When the winding direction of the rewinder in the preceding process is downward winding and the unwinding direction of the subsequent process is downward winding, only the electrode sheet is constantly reversed.

[0188] The lower drawing of Fig. 6 shows whether or not a continuous reversal and a surface reversal occur according to the winding and unwinding directions when going through the first process, second process, and third process.

[0189] Even if pattern indicator data is matched by considering the electrode inversion and electrode loss as in Fig. 5, if surface inversion occurs as in Fig. 6, the pattern indicator data of each process may not be matched to correspond to the position of the same actual electrode sheet.

[0190] In this case, for example, by assigning control logic of 0 and 1 to the server of the server system, the presence or absence of surface inversion can be recorded, and the surfaces of the electrode sheets can be matched between the preceding and succeeding processes. That is, in the case where surface inversion does not occur in Fig. 6, the 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 a corresponding operation as in Fig. 5.

[0191] In the case where surface inversion occurs, control logic of 1 can be assigned. In this case, based on the control logic, the server can allocate pattern indicator data of each process so that it corresponds to the absolute and relative pattern indicator data for the upper surface of the first process and the absolute and relative pattern indicator data for the lower surface of the second process.

[0192]

[0193] (Example 2)

[0194] Figure 7 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0195] Figure 8 shows a roll map of a pattern electrode with a pattern indicator and a sub-pattern indicator displayed.

[0196] Referring to FIG. 7, the battery manufacturing method of the present invention includes a step (P210) of acquiring coordinate data that can continuously indicate the longitudinal position of the electrode sheet, in addition to acquiring pattern indicator data and measurement data and / or inspection data for the electrode sheet when the electrode sheet moves in a plurality of processes.

[0197] Methods that utilize the moving speed or time difference of the electrode sheet to calculate the length (pitch) of the pattern or the length of the section where measurement data and / or inspection data are acquired may require additional calculation tools. In addition, since the moving speed of the electrode sheet is not always constant, there are cases where the specific data measurement point on the electrode sheet and the position of the electrode sheet at that point do not precisely correspond. In addition, the moving speed of the electrode sheet varies depending on the specifications of the electrode sheet, the type of model, the type of processing process, the driving mechanism of the processing device, etc. In this way, methods that indirectly determine the position or distance of the electrode sheet by using the varying moving speed and time difference may delay the data processing speed and increase the manufacturing cost.

[0198] In the embodiment of FIG. 7, pattern indicator data and coordinate data may be used together to indicate the longitudinal position of the electrode sheet. For example, while pattern indicator data including pattern indicators that intermittently indicate the position on the electrode sheet as the main position data may be acquired, coordinate data including coordinate values ​​that can continuously indicate the longitudinal position may be further acquired. The coordinate values ​​and the difference between the coordinate values ​​directly indicate the position of the electrode sheet or the distance of a specific section. Therefore, by acquiring the coordinate data, positional information about the electrode sheet can be acquired more accurately without performing the additional calculation described above and by excluding the influence of the moving speed of the electrode sheet. By associating such coordinate data with the pattern indicator data, or with measurement data and / or inspection data, or with measurement data and / or inspection data associated with the pattern indicator data, status information about the electrode sheet can be obtained more accurately and reliably.

[0199] A first position measuring device (pattern counter) may be used to acquire pattern indicator data. A second position measuring device may additionally be used to acquire coordinate data. The second position measuring device may be a rotary encoder that can express a position signal of an electrode sheet moving according to the rotational amount of an unwinder or a rewinder as an encoder value. Alternatively, the second position measuring device may be a linear encoder that expresses a position signal corresponding to the displacement of the electrode sheet as an encoder value. The encoders may be configured to be contact-type or non-contact-type with the electrode sheet. The second position measuring device may have a predetermined calculation unit to convert the encoder value into a coordinate value. Alternatively, a process controller may receive the encoder value and convert the encoder value into a coordinate value through a predetermined calculation. Considering the load on the process controller, it may be preferable to directly convert the encoder into a coordinate value.

[0200] By comparing the set pattern pitch and coordinate data, a sub-pattern indicator that further refines the pattern indicator can be derived. For example, the pattern indicator and sub-pattern indicator may be a pattern number and a sub-pattern number, respectively, and are used as an example in FIG. 8.

[0201]

[0202] Referring to Fig. 8, an electrode sheet (ES) having a pattern is progressing in the longitudinal direction X, which is the driving direction (MD).

[0203] For example, the first position measuring device, which is a pattern counter, can detect the boundary lines (BL1, BL2, BL3) of the coated portions (2) and the uncoated portions (1). For example, the second position measuring device, which is a rotary encoder, can express the longitudinal position of each pattern (#1, #2) as a coordinate value based on the encoder value. In this case, when the set pattern pitch (PP) is 800 mm, the set pattern pitch can be divided into 10 and the pattern number can be displayed in decimal units. For example, when the electrode sheet moves by 80 mm and the controller receives a coordinate value corresponding to 80 mm, the controller can count a pattern number of 0.1 pt at the position corresponding to the coordinate value. Until the electrode sheet moves by 800 mm and the first position measuring device detects the boundary (BL3) of the coated portion of pattern number #2, the controller can count the sub-pattern number from 0.1 pt to 1.0 pt so as to correspond to the coordinate value of each point. As described above, by comparing the set pattern pitch with coordinate data and calculating the sub-pattern number, the pattern number can be displayed in more detail. This makes it easier to identify abnormal pitch patterns.

[0204] By comparing the set pattern pitch and the length of each pattern, patterns with abnormal pitches can be determined.

[0205] In this case, the length of each pattern and / or the length of the coated portion and the uncoated portion 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 indicate the position and distance are compared with the pattern pitch, the length (pitch) of the pattern can be intuitively obtained without a separate calculation to obtain the distance (length) as in the first embodiment. Therefore, patterns with excessive or insufficient pitch can be identified more quickly.

[0206] Referring to FIG. 7, the battery manufacturing method of the present invention includes a step (P220) of associating the coordinate data with the pattern indicator data, the measurement data, and / or the inspection data, in addition to associating the pattern indicator data with the measurement data and / or the inspection data.

[0207] As described in the first embodiment, the pattern indicator data and the measurement data and / or inspection data may be associated with each other corresponding to the same time or time interval. In the second embodiment, in addition, the coordinate data may be associated with at least one of the following:

[0208] ⅰ) Pattern indicator data

[0209] ⅱ) Measurement data and / or inspection data

[0210] ⅲ) The time or time interval during which the pattern indicator data and the above measurement data and / or inspection data were acquired.

[0211] The battery manufacturing method of the present invention includes a 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 the coordinate data.

[0212] As monitoring data, a roll map including coordinate data can be provided.

[0213] Figure 9 shows an example of a roll map that displays pattern indicator data and coordinate data on a pattern electrode.

[0214] Figure 9(a) is a roll map of a double-sided electrode that simulates the coating state of an actual pattern electrode. The portion of the electrode sheet other than the coated portion is an uncoated portion.

[0215] In this example, the first uncoated portion on the right side of Fig. 9(a) and the adjacent coated portion can be combined and counted as a pattern of pattern number #1. Alternatively, the first coated portion on the right side of Fig. 9(a) and the adjacent uncoated portion on the left side can be combined and counted as a pattern of pattern number #1. The first position measuring device sequentially detects the boundary line between the uncoated portion and the coated portion, detects patterns of pattern numbers #1 to #8, and acquires pattern number data. The roll map also displays coordinate data (expressed in units of m) acquired by the second position measuring device. To avoid data overload, the coordinate data may be displayed only on a major portion of the roll map.

[0216] A roll map can be generated not only for a single-sided electrode in which a coating is formed only on one side of the electrode sheet, but also for a double-sided electrode in which a coating is formed on both sides of the electrode sheet, as shown in Fig. 9(a). To prevent excessive increase in roll map data, only major event information can be collected and transmitted to the server. The server can generate a roll map for the double-sided electrode based on this. If performance management is performed by considering both the upper and lower patterns, the amount of data to be considered increases, so performance management can be performed based on either the upper or lower pattern. In this embodiment, pattern performance management is performed based on the lower pattern.

[0217] When the set pattern pitch is 878 mm, a pattern of an abnormal pitch can be indicated by comparing it with the set pattern pitch based on the pattern indicator data by the first position measuring device and the coordinate data by the second position measuring device. A normal section coated according to the set pattern pitch is shown in Fig. 9(a). However, with respect to the lower pattern, an under-length pattern is measured and displayed at the position of pattern number #4, an uncoated section is measured at the position of #5, and an over-length pattern is measured and displayed at the section of #6. For example, a pattern that is 0.5 times or less of the set pattern pitch can be regarded as a defective pattern. Alternatively, a pattern that is 1.5 times or more of the set pattern pitch can be regarded as a defective pattern.

[0218] When there is an uncoated section between neighboring patterns that is not included in the pattern, a pattern indicator can be assigned to the uncoated section as many times as the number of patterns obtained by dividing the length of the uncoated section by the set pattern pitch. In Fig. 9(a), a pattern number of #5 is assigned to the uncoated section between patterns #4 and #6. If a pattern indicator is not assigned to the uncoated section, a gap will be created in the roll map information, making it impossible to completely express the state of the electrode sheet. Errors may occur when managing and tracking the electrode process with such a roll map. Therefore, the roll map needs to include information on patterns with an abnormal pitch that is different from the set pattern pitch, as well as information on uncoated sections that are not included in the pattern. The information on the uncoated section is information on pattern indicators that are correspondingly assigned to the uncoated section as many times as the number of patterns obtained by dividing the length of the uncoated section by the set pattern pitch.

[0219] In this embodiment, information about reference points and seams is also included.

[0220] Reference points (M1, M2, M3) are marked on the electrode sheet at predetermined intervals. The roll map can measure the actual positions of the reference points and display the positions and intervals between them. If the interval between reference points changes from the preset reference point positions, the change in electrode length that occurred during, before, or after the process can be identified. The indication of the connecting tape, which is a joint, indicates that the electrode was broken for some reason and was connected by the connecting tape (T1). The coordinate values ​​or pattern indicator data for the start point (Ts) and end point (Te) of the connecting tape can be acquired to indicate the position of the connecting tape (T1). From this information, the history of the status changes of the actual electrode sheet that has undergone multiple processes can be more accurately identified.

[0221] Figure 9(a) shows three reference points (M1, M2, M3), and the pattern indicator and coordinate values ​​for each reference point are shown. The reference points can be measured by a reference point measuring device, and the seam can be measured by a seam sensor.

[0222] Figure 9(b) is a roll map displaying pattern indicator data and coordinate data in the coated and uncoated sections.

[0223] In Figure 9(b), the pattern indicator is displayed in units of sub-pattern indicators.

[0224] Additionally, coordinates are displayed at key points.

[0225] The roll map of Fig. 9(b) includes an uncoated section, and a sub-pattern number is displayed in contrast to the set pattern pitch for the uncoated section. The uncoated section includes an uncoated section corresponding to two set pattern pitches and an uncoated section corresponding to 0.6 times (0.6Pt) the set pattern pitch.

[0226] Meanwhile, only performance information excluding the non-coated section can be collected and transmitted to the process controller. The controller, as a process equipment controlling the process, is interested in the performance actually manufactured into electrodes and needs to record the performance net. Among the pattern numbers in Fig. 9(b), those that are not sub-pattern numbers (numbers not expressed in decimal units: e.g., 24pt) are pattern numbers that indicate performance. In the non-coated section, the pattern number remains at 26pt, and at the end of the non-coated section, it becomes 27pt, increasing the pattern number by 1.

[0227] In this way, according to the present invention, by the battery manufacturing system described above, pattern indicator data and coordinate data can be freely displayed, and further, pattern indicators that are aggregated as performance and pattern indicators that are not performance can be displayed separately.

[0228] Therefore, monitoring data and roll map data that match the status of the actual pattern electrode can be generated, thereby greatly improving data consistency.

[0229] Referring again to FIG. 7, the battery manufacturing method of the present embodiment includes at least one of the following steps when generating monitoring data.

[0230] ⅰ) A step (P231) of generating monitoring data by compressed measurement data and / or inspection data based on the pattern indicator data, the coordinate data, the measurement data and / or the inspection data.

[0231] ⅱ) A step (P232) of generating inter-process monitoring data by corresponding the pattern indicator data of each process to correspond to the same physical location of the electrode sheet, and / or corresponding the coordinate data of each process.

[0232]

[0233] In this embodiment, measurement data and / or inspection data can be compressed based on coordinate data in addition to pattern indicator data. That is, multiple measurement values ​​measured for one or more patterns can be compressed to derive a representative value. In this case, coordinate data containing coordinate values ​​corresponding to the one or more patterns can also be included in the compressed data.

[0234] For example, a processing unit provided by a measuring instrument and / or an inspection device 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.

[0235] The compressed measurement data and / or inspection data may include representative values ​​of measurement values ​​and / or inspection values ​​of the measurement data and / or inspection data, pattern indicator data and coordinate data of the start and end points of the electrode sheet portion from which the measurement data and / or inspection data were collected.

[0236] The above representative value may include at least one of the average, standard deviation, median, maximum value, and minimum value of the measurement data and / or inspection data of each pattern.

[0237] Based on the above pattern indicator data and coordinate data, the pattern indicators and coordinate values ​​of the start and end points of each pattern of the electrode sheet from which measurement data and / or inspection data are collected can be determined. Alternatively, the pattern indicators and coordinate values ​​of the start and end points of the portion of the electrode sheet corresponding to a plurality of patterns grouped by group can be determined.

[0238] Measurement data and / or inspection data are processed in a set manner so that judgment values ​​for each pattern or multiple patterns of the electrode sheet can be determined.

[0239] The processing unit may be configured to transmit compressed measurement data and / or inspection data directly or via a process controller to a server system.

[0240] A server system or a server included in the server system can generate monitoring data (e.g., a roll map) including the compressed measurement data and / or inspection data.

[0241]

[0242] Figure 10 illustrates process monitoring data generated by a battery manufacturing method according to exemplary embodiments.

[0243] The above monitoring data may include a roll map of each process including pattern indicator data, coordinate data of each process, and measurement data and / or inspection data of each process associated with the pattern indicator data.

[0244] Alternatively, the above monitoring data may be inter-process monitoring data in which pattern indicator data and coordinate data of each process are displayed in correspondence with each other so as to correspond to the location of the same physical electrode sheet.

[0245] In Fig. 10, changes in coordinate data of the first to third processes are shown together with time data.

[0246] In the first process, electrodes with coordinate values ​​of 1.5 to 9.5 are arranged in the reverse order in the second process. In addition, the coordinate values ​​of the second process are arranged in the reverse order again in the third process. Since the positions of the start and end points of the electrode sheet are reversed between processes, in order to compare the data of each process at the position of the same actual electrode sheet, it is necessary to correspond the reversed pattern indicator data as shown in Fig. 10.

[0247] In addition, Fig. 10 shows the parts removed in each process. When the coordinate data is displayed including the parts removed as loss in each process, it is displayed as 'absolute coordinates', and when the coordinate data is displayed excluding the removed parts, it is displayed as 'relative coordinates'. The coordinate data can continuously indicate the longitudinal position of the electrode sheet, for example, according to the pulse value of a rotary encoder. On the other hand, the pattern indicator data is advantageous in indicating the position of the electrode sheet intermittently. For example, the pattern indicator data can be expressed as a sub-pattern indicator in units of 0.1. For example, the coordinate data can be expressed in units of 0.01 m.

[0248] For example, in the first process, the 'absolute coordinate values' of 1.5 to 9.5 only remain as 2.5, 3.5, 6.5, 7.5, and 8.5 when considering the loss that occurred during the process. When this data is corrected to '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 loss in each process and considering the reversal of the start and end points between processes, the coordinate data corresponding to the position of the same actual electrode sheet in each process can be matched.

[0249] The battery cells manufactured from the remaining surviving electrodes through 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 as shown in the leftmost diagram of Fig. 5.

[0250] Additionally, the process data of Fig. 10 can be generated by considering the surface inversion described above.

[0251] 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 a corresponding operation as shown in Fig. 10.

[0252] In the case where surface inversion occurs, control logic of 1 can be assigned. In this case, based on the control logic, the server can assign coordinate data of each process so that it corresponds to the absolute coordinate data and relative coordinate data regarding the upper surface of the first process and the absolute coordinate data and relative coordinate data regarding the lower surface of the second process.

[0253] In Fig. 10, only the inter-process correspondence of coordinate data is illustrated, but pattern indicator data associated with the coordinate data can also be inter-process correspondence. That is, the pattern indicator data of each process can be inter-process correspondence and / or the coordinate data of each process can be inter-process correspondence by at least one of the following.

[0254] 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 matched between processes.

[0255] 2) The pattern indicator data and / or coordinate data that change according to the loss of the electrode sheet that occurs during and / or between each process are matched between processes.

[0256] 3) As the corresponding surface of the electrode sheet is reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data and / or the coordinate data are corresponded between processes.

[0257] The pattern indicator data and coordinate data for each process are linked to measurement data and / or inspection data. Therefore, by referencing the roll map or the data contained within the roll map, selecting a specific pattern indicator or coordinate value allows you to identify the corresponding measurement data and / or inspection data.

[0258]

[0259] (Example 3)

[0260] Fig. 11 illustrates a battery manufacturing system according to exemplary embodiments.

[0261] The above battery manufacturing system (1000) may include a battery manufacturing device (100), a server system (200), and a user device (300).

[0262] The battery manufacturing device (1000) may include an unwinder (111), a rewinder (113), a processing mechanism (115), a first position measuring device (125R, 125U), a second position measuring device (121, 123), a measuring device and / or an inspector (130), and a controller (140).

[0263] The unwinder (111) may be configured to unwind the electrode sheet (ES) from the electrode roll (ER1). The rewinder (113) may be configured to wind the electrode sheet (ES) onto the electrode roll (ER2). Accordingly, the electrode sheet (ES) can move between the unwinder (111) and the rewinder (113).

[0264] A process for manufacturing a battery (e.g., an electrode process) can be performed on an electrode sheet (ES).

[0265] The electrode sheet (ES) can be processed by a processing device (115). For example, the processing device (115) may include a coater and may coat electrode slurry on the electrode sheet to form a patterned electrode sheet. As another example, the processing device (115) may include a pressure roll and a roll pressing process may be performed on the electrode sheet (ES) on which the electrode slurry is coated in a patterned shape. As another example, the processing device (115) may include a splicing die and a scrap port and a portion of the electrode sheet (ES) may be scraped. As another example, the processing device may include a slitting knife and the electrode sheet (ES) may be separated into a plurality of electrode sheets.

[0266] The above first position measuring device (125R, 125U) may be a pattern counter that counts a pattern indicator on an electrode. The pattern indicator continuously indicates a position on an electrode sheet moving between an unwinder and a rewinder.

[0267] A first position measuring device (125U) installed on the unwinder side may be configured to sense the amount of electrode sheet (ES) unwound from the electrode roll (ER1) by the unwinder (111). A controller (140) may be configured to collect pattern indicator data (PID) generated by the first position measuring device (125U).

[0268] A first position measuring device (125R) installed on the rewinder side may be configured to sense the amount of electrode sheets (ES) wound onto the pattern electrode roll (ER2) by the rewinder (113). A controller (140) may be configured to collect pattern indicator data (PID) generated by the first position measuring device (125R). This pattern indicator data (PID) may indicate the production performance of the battery manufacturing device (100).

[0269] The second position measuring device is, for example, a rotary encoder. Among the second position measuring devices, the first rotary encoder (121) may be configured to sense the amount of electrode sheets (ES) unwound from the electrode roll (ER1) by the unwinder (111). Accordingly, the first rotary encoder (121) may be configured to generate an unwinding amount signal indicating the unwinding amount of the electrode sheets (ES). The first rotary encoder (121) may convert the unwinding amount signal to directly obtain input amount data (coordinate data). Alternatively, the first rotary encoder (121) may transmit the unwinding amount signal to the controller (140), and the controller (140) may 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 device (100) to manufacture a battery, and is coordinate data (CD).

[0270] The second rotary encoder (123) may be configured to sense the amount of electrode sheets (ES) wound onto the electrode roll (ER2) by the rewinder (113). Accordingly, the second rotary encoder (123) may be configured to generate a winding amount signal indicating the winding amount of the electrode sheets (ES). The second rotary encoder (123) may convert the winding amount signal to directly obtain exhaustion amount data (coordinate data). Alternatively, the second rotary encoder (123) may transmit the winding amount signal to the controller (140), and the controller (140) may convert the signal to collect exhaustion amount data. The exhaustion amount data may indicate the production performance of the battery manufacturing device (100).

[0271] Hereinafter, the technical idea of ​​the present invention will be explained with a focus on an embodiment in which a controller (140) collects pattern indicator data (PID) and coordinate data (CD) generated by a first position measuring device (125R) and a second position measuring device (123).

[0272] As a non-limiting example, the controller (140) may be a process controller that controls the processing process and may be a PLC (Programmable Logic Controller). The controller (140) may include a power supply, a CPU, an input interface, an output interface, a communication interface, and memory devices. The communication interface may be configured to transmit and receive data between the controller (140) and the first position measuring device (125U, 125R), the second position measuring device (121, 123), the measuring device and / or the inspector (130), and the server system (200).

[0273] The measuring device may be configured to measure the electrode sheet (ES) and collect measurement data (MD). The inspector may be configured to inspect the electrode sheet (ES) and collect inspection data (ID). The measuring device or inspector may be provided in one or more units. In the present embodiment, for convenience of explanation, the measuring device and / or inspector are collectively represented by a single symbol 130.

[0274] The measuring instrument and / or tester may include a sensing unit (130S) and a processing unit (130P). The sensing unit (130S) may be configured to detect a physical quantity of the electrode sheet (ES) to generate a measurement signal (MS) or a test 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.

[0275] The processing unit (130P) may be configured to receive a measurement signal (MS) or an inspection signal (IS) sensed by the sensing unit (130S) to collect measurement data (MD) or inspection data (ID). The processing unit (130P) may be connected to the sensing unit (130S) by wire or wirelessly.

[0276] The controller (140) can collect measurement data and / or inspection data (MD / ID) generated by the measuring instrument and / or inspection instrument (130). In addition, the controller (140) can be configured to control the operation of the unwinder (111), the rewinder (113), and the processing mechanism (115). Signals for operation and stop of the unwinder (111), the rewinder (113), and the processing mechanism (115) can be generated based on electrode specification data (ESD), additional inspection signals, and measurement signals.

[0277] The pattern indicators of the above pattern indicator data (PID) may be associated with the measurement data and / or inspection data (MD / ID). For example, pattern indicators collected based on a specific time or time interval may be associated with the measurement data and / or inspection data (MD / ID) matching the same time or time interval. The processing unit (130P) of the measuring instrument and / or inspection instrument may receive the pattern indicator data (PID) from the first position measuring instrument (125U, 125R) and associate the pattern indicator with the measurement data and / or inspection data. Alternatively, the pattern indicator data and the measurement data and / or inspection data may be transmitted to the controller (140) so that the controller may associate the pattern indicator with the measurement data and / or inspection data.

[0278] Additionally, the processing unit (130P) of the measuring instrument and / or inspection instrument may receive coordinate data (CD) from the second position measuring instrument (121, 123) and associate the coordinate data with pattern indicator data, measurement data and / or inspection data. Alternatively, the coordinate data and measurement data and / or inspection data may be transmitted to the controller (140) so that the controller may associate the coordinate data with the pattern indicator data, measurement data and / or inspection data.

[0279] According to an exemplary embodiment, the measuring instrument and / or tester (130) or the controller (140) can correct the pattern indicator data (PID) and the coordinate data (CD) based on the offset length (OL).

[0280] Since the positions of the measuring instrument and / or the inspector and the first position measuring instrument are different, the portion of the electrode sheet (ES) being measured and / or inspected at the same point in time and the portion of the electrode sheet (ES) that is the target of the pattern indicator detected by the first position measuring instrument may be different. Similarly, since the positions of the measuring instrument and / or the inspector and the second position measuring instrument are different, the portion of the electrode sheet (ES) being measured and / or inspected at the same point in time and the portion of the electrode sheet (ES) that is the target of the pattern indicator detected by the second position measuring instrument may be different.

[0281] Accordingly, the pattern indicators of the pattern indicator data collected at the same time as the measurement data and / or inspection data can be corrected by adding or subtracting the number of pattern indicators corresponding to the offset length, and the corrected pattern indicators can be associated with the measurement data and / or inspection data to obtain measurement data and / or inspection data associated with the corrected pattern indicators. In addition, the coordinate values ​​of the coordinate data collected at the same time as the measurement data and / or inspection data can be corrected by adding or subtracting the offset length, and the corrected coordinate values ​​can be associated with the measurement data and / or inspection data to obtain measurement data and / or inspection data associated with the corrected coordinate data.

[0282] The correction of such 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 device.

[0283] Measurement data and / or inspection data associated with pattern indicator data generated in the processing unit (130P) may be transmitted to the server system (200) directly or through the controller (140). Alternatively, measurement data and / or inspection data associated with pattern indicator data generated in the controller (140) may be transmitted to the server system (200).

[0284] Measurement data and / or inspection data associated with coordinate data generated in the processing unit (130P) may be transmitted to the server system (200) directly or through the controller (140). Alternatively, measurement data and / or inspection data associated with coordinate data generated in the controller (140) may be transmitted to the server system (200).

[0285] The server system (200) can generate monitoring data for battery manufacturing based on the pattern indicator data (PID) and measurement data and / or inspection data associated with the pattern indicator data.

[0286] Alternatively, the server system (200) may generate monitoring data for battery manufacturing based on the pattern indicator data (PID), the coordinate data (CD), and measurement data and / or inspection data associated with the pattern indicator data and the coordinate data.

[0287] The above server system can generate at least one of the following monitoring data.

[0288] ⅰ) Monitoring data including compressed measurement data and / or inspection data based on the pattern indicator data (PID) and the measurement data and / or inspection data.

[0289] ⅱ) Inter-process monitoring data generated by matching the pattern indicator data of each process to correspond to the location of the same physical electrode sheet.

[0290] Additionally, the server system can generate at least one of the following monitoring data.

[0291] ⅰ) Monitoring data including compressed measurement data and / or inspection data based on the pattern indicator data (PID), the coordinate data (CD), the measurement data and / or the inspection data.

[0292] ⅱ) Inter-process monitoring data generated by matching the pattern indicator data of each process to correspond to the location of the same physical electrode sheet, and / or matching the coordinate data of each process.

[0293] 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, 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, the measurement data and / or inspection data. The compressed measurement data and / or inspection data may include representative values ​​of measurement values ​​and / or inspection values ​​of the measurement data and / or inspection data, and pattern indicator data and / or coordinate data of start and end points of the electrode sheet portion where the measurement data and / or inspection data are collected.

[0294] 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 from the processing unit (130P) and the compressed measurement data and / or inspection data (PD) can be transmitted to the server system (200) through different paths.

[0295] 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).

[0296] The server system (200) may be equipped with multiple servers (210, 220, 230, 240, 250) to perform each function.

[0297] Compressed measurement data and / or inspection data (PD) may be transmitted to the server (220) via the server (210) within the server system (200). The server (210) may be a program for communication between the process controller (140) of the manufacturing facility and the server (220) for manufacturing management. The server (210) may also be implemented in hardware. The server (210) may be configured to convert the electrode specification data (ESD) transmitted from the server (220) into the language of the controller (140). In addition, the server (210) may be configured to convert the compressed measurement data and / or inspection data (PD) into the language of the server (220) and record it in the database of the server (220).

[0298] The server (220) may be configured to generate a roll map. The roll map may include data regarding specifications of the lot. The specifications of the lot may include, for example, a lot number, the length of the rolled electrode sheet (ES), the width of the electrode sheet (ES), and the materials and compositions used in processing the electrode sheet (ES).

[0299] According to exemplary embodiments, the server (220) may be a data processing system that supports various activities necessary for managing 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 a coating process, a roll pressing process, and a slitting process.

[0300] The server (230) may be configured to store original data (OD) having a large capacity, i.e., original data (OD) including raw data. The server (230) may be configured to transmit the original data (OD) to the server (240) in response to an API request (AR) of the server (240). The API request (AR) may include information for identifying measurement data and / or inspection data associated with pattern indicator data and / or coordinate data. The API request (AR) may include, for example, a time stamp, a start pattern indicator, an end pattern indicator, a start coordinate, and an end coordinate.

[0301] The server (240) may be configured to store and process measurement data and / or inspection data of the electrode sheet (ES). The server (240) may continuously monitor the processing of the electrode sheet (ES) based on the measurement data and / or inspection data, thereby managing the quality of the processing of the electrode sheet (ES). According to exemplary embodiments, the server (240) may be a Statistical Process Controller (SPC). The server (240) may collect and analyze manufacturing data in near real-time, thereby promptly identifying problem conditions and providing alerts to operators before potential problems occur.

[0302] The server (250) may be configured to store data from the servers (220, 230, and 240). The server (250) may be configured to store original data (OD) and compressed data (PD). The server (250) may be, for example, a data warehouse and may store necessary data for a long period of time, such as based on the product's quality assurance period. Accordingly, tracking of the manufacturing process according to the product's life cycle may be provided.

[0303] Since the server (220) stores and processes a large amount of data for general manufacturing management other than roll maps, the roll maps stored in the server (220) may include compressed data (PD) of small capacity instead of large-capacity original data. The server (220) may provide roll maps in response to requests from user devices (300).

[0304] The server (240) can provide a roll map including original data (OD). In addition, the server (240) can generate inter-process monitoring data in which pattern indicator data of each process is displayed in correspondence with each other so as to correspond to the position of the same actual electrode sheet, as described with reference to FIGS. 5, 6, and 10. In addition, the server (240) can generate inter-process monitoring data in which coordinate data of each process is displayed in correspondence with each other so as to correspond to the position of the same actual electrode sheet.

[0305] That is, the server (240) can calculate pattern indicator data and coordinate data corresponding to the position of the actual electrode sheet by considering the electrode start / stop inversion and electrode loss between multiple processes based on the time or time section of the electrode sheet (see FIGS. 5 and 10). In addition, the server (240) can determine whether the surface is inverted between the preceding process and the succeeding process and correspond the pattern indicator data and coordinate data of the preceding process and the succeeding process so that the surfaces of the electrode sheets 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 the surface is inverted. The server (240) can be equipped with separate or integrated operation units or operation programs that rearrange, calculate, and correspond data according to the electrode start / stop inversion, electrode loss, and electrode surface inversion.

[0306] The server (240) can generate an overlay roll map by correcting the pattern indicator data and coordinate data of each process's roll map to the same numerical value based on the process-to-process monitoring data to which each data corresponds. This overlay roll map can be considered an intermediate roll map that is one step more advanced than a typical roll map, as it allows for intuitive understanding of multiple processes.

[0307] A user device (300) can display a visualized roll map (VRM). The user device (300) can be any device for communicating with the server system (200), such as a workstation computer, a notebook, a laptop, a desktop, a tablet, a mobile device such as a smart phone, a wearable device, etc. The user device (300) can be configured to generate a request (R1) for loading a roll map or a request (R2) for loading an intermediate roll map. The user device (300) can be configured to transmit the requests (R1, R2) to the server system (200). The user device (300) can include input tools for inputting the requests (R1, R2) and a display device for displaying the visualized roll map (VRM).

[0308] The servers (210, 220, 230, 240, 250) may include physical servers or cloud servers. The servers (210, 220, 230, 240, 250) may include various Application Programming Interfaces (APIs) for storing data in databases and other data management tools.

[0309]

[0310] The servers, controllers, devices, units, and the like disclosed in connection with various embodiments and the various components included therein enable implementation of the methods and processes according to the present disclosure, and may be implemented by one or more microprocessors executing software or firmware, and / or one or more application specific integrated circuits (ASICs), and / or one or more processors having circuitry such as a combination of ASICs, discrete electronic components (e.g., transistors), and microprocessors.

[0311] In some embodiments, separately indicated components may be replaced by a single component. Additionally, some of the indicated components may be additional or replaced by other components.

[0312] In various embodiments, one or more memories may store a set of instructions that can be executed by one or more processors to perform one or more methods or processes based on the functions disclosed in the present disclosure. The one or more memories may communicate via one or more wires or buses, or wirelessly. The one or more memories may be static or dynamic memories. The 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 such as random access memory, read-only memory, programmable read-only memory, electrically programmable read-only memory, electrically erasable read-only memory, flash memory, and the like.

[0313] In one implementation, the one or more memories may include cache or random access memory for one or more processors. The one or more memories may be cache memory, system memory, or other memory of the one or more processors. Processing strategies may include multiprocessing, multitasking, and the like. According to various embodiments, the computer-readable storage media described in connection with the one or more memories may be non-transitory and may be tangible memory.

[0314]

[0315] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

[0316] (Explanation of symbols)

[0317] 10, 1000: Battery manufacturing system

[0318] 100: Battery manufacturing equipment

[0319] 200: Server System

[0320] 111: unwinder, 113: rewinder, 115: processing mechanism,

[0321] 125U,125R: 1st position measuring device

[0322] 121, 123: Second position measuring device (first rotary encoder, second rotary encoder)

[0323] 130; measuring instrument, 130P: sensing unit, 130S: processing unit

[0324] 140: Controller

[0325] 300: User device

Claims

1. A first step of acquiring pattern indicator data and measurement data and / or inspection data indicating the position of the pattern on an electrode sheet having a pattern in which a coated portion and a non-coated portion are repeatedly arranged; A second step of associating the above pattern indicator data with the measurement data and / or inspection data; and A battery manufacturing method comprising a third step of generating inter-process monitoring data by corresponding the pattern indicator data for each process of a plurality of processes to correspond to the same physical location of the electrode sheet.

2. In paragraph 1, A battery manufacturing method that corresponds pattern indicator data of each 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 is matched between processes. 2) As the corresponding surface of the electrode sheet is reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data is corresponded between processes. 3) The above pattern indicator data, which changes depending on the loss of the electrode sheet occurring during and / or between each process, is matched between processes.

3. In paragraph 2, The operation of the above 3) is a battery manufacturing method including the following steps. A step of displaying pattern indicator data including at least one portion removed by loss of the electrode sheet as absolute pattern indicator data; A step of displaying relative pattern indicator data for pattern indicator data excluding at least one portion removed by loss of the electrode sheet; A step of corresponding absolute pattern indicator data and relative pattern indicator data that does not include at least one portion removed by loss of the above electrode sheet.

4. In paragraph 3, A battery manufacturing method comprising a step of associating relative pattern indicator data and cell ID in a final process among processes.

5. In paragraph 1, The above first step further includes a step of acquiring coordinate data that can continuously indicate the position of the electrode sheet, The second step further includes a step of associating the coordinate data with the pattern indicator data and the measurement data and / or inspection data, The third step is a battery manufacturing method further comprising a step of generating the 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. In paragraph 5, The third step is a battery manufacturing method including 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, the measurement data and / or the inspection data. ⅱ) A step of generating inter-process monitoring data by corresponding the pattern indicator data of each process and / or corresponding the coordinate data of each process so as to correspond to the same physical location of the electrode sheet.

7. In paragraph 6, The step of compressing the above measurement data and / or inspection data is: A battery manufacturing method comprising at least one of a step of calculating a representative value and / or a step of determining a judgment value for each measurement value and / or inspection value of the collected measurement data and / or inspection data for the pattern indicator and coordinate data of the start and end portions of the electrode sheet.

8. In paragraph 6, A battery manufacturing method that corresponds pattern indicator data of each process or coordinate data of each 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 matched between processes. 2) The pattern indicator data and / or coordinate data that change according to the loss of the electrode sheet that occurs during and / or between each process are matched between processes. 3) As the corresponding surface of the electrode sheet is reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data and / or the coordinate data are corresponded between processes.

9. In paragraph 5, A battery manufacturing method wherein the above pattern indicator data, coordinate data, measurement data and / or inspection data are related to each other based on the same time or time interval.

10. In paragraph 1, The above monitoring data is, A roll map of each process including pattern indicator data of each process and measurement data and / or inspection data of each process associated with the pattern indicator data. A battery manufacturing method comprising at least one roll map in which pattern indicator data of each process is displayed corresponding to each other so as to correspond to the same physical location of the electrode sheet.

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

12. In paragraph 11, A battery manufacturing system wherein the one or more processors are configured to correspond pattern indicator data of each process based on at least one of the following operations. 1) As the positions of the start and end of the electrode sheet are reversed between processes, the reversed pattern indicator data is matched between processes. 2) As the corresponding surface of the electrode sheet is reversed between processes according to the winding direction and unwinding direction of the electrode sheet, the reversed pattern indicator data is corresponded between processes. 3) The above pattern indicator data, which changes depending on the loss of the electrode sheet occurring during and / or between each process, is matched between processes.

13. In paragraph 12, The above one or more processors, in the operation of 3), For pattern indicator data including at least one portion removed by loss of the electrode sheet, display it as absolute pattern indicator data; Displaying relative pattern indicator data for pattern indicator data that excludes at least one portion removed by loss of the electrode sheet; A battery manufacturing system configured to correspond absolute pattern indicator data and relative pattern indicator data that do not include at least one portion removed by loss of the electrode sheet.

14. In paragraph 13, A battery manufacturing system wherein the one or more processors are configured to associate relative pattern indicator data and cell ID in a final process among the processes.

15. In paragraph 11, Further comprising a second position measuring device configured to generate coordinate data capable of continuously indicating the position of the electrode sheet; One or more of the above processors, Associate the above coordinate data with the pattern indicator data and the measurement data and / or inspection data, A battery manufacturing system configured to generate the 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. In paragraph 11, A battery manufacturing system wherein said one or more processors are configured to generate at least one of the following: ⅰ) Compressed measurement data and / or inspection data based on the pattern indicator data, the coordinate data, the measurement data and / or the inspection data; ⅱ) Inter-process monitoring data generated by corresponding the pattern indicator data of each process to correspond to the same physical location of the electrode sheet, and / or by corresponding the coordinate data of each process.

17. In paragraph 16, One or more of the above processors, A battery manufacturing system configured to generate compressed measurement data and / or inspection data by at least one of a step of calculating a representative value and / or a step of determining a judgment value for each measurement value and / or inspection value of the collected measurement data and / or inspection data for the pattern indicator and coordinate data of the start and end portions of the electrode sheet.

18. In paragraph 12, A battery manufacturing method wherein the one or more processors are configured to correlate the pattern indicator data, coordinate data, measurement data and / or inspection data with each other based on the same time or time interval.

19. In paragraph 11, A battery manufacturing system wherein the one or more processors are configured to implement the function of at least one server among the following. i) A roll map generation server that generates 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. ⅱ) A roll map generation server that generates a roll map in which pattern indicator data of each process is displayed in correspondence with each other so as to correspond to the same physical location of the electrode sheet as the above process-to-process monitoring data.

20. One or more non-transitory processor-readable media storing executable instructions that, when executed by one or more processors, cause the one or more processors to perform a battery manufacturing method comprising the following steps. A step of acquiring pattern indicator data and measurement data and / or inspection data indicating the position of the pattern on an electrode sheet having a pattern in which a coated portion and an uncoated portion are repeatedly arranged; A step of associating the above pattern indicator data with the above measurement data and / or inspection data; and A step of generating inter-process monitoring data by corresponding the pattern indicator data for each process of a plurality of processes to correspond to the same physical location of the electrode sheet.

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