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 comprises a step of generating pattern indicator data indicating a plurality of positions on a pattern electrode sheet in which coated portions and non-coated portions are repeatedly arranged, wherein the coated portions and the non-coated portions adjacent to the coated portions constitute one pattern. One of the plurality of positions may be a position of a non-coated portion adjacent to at least one coated portion in the pattern electrode sheet. The method comprises: a step of generating measurement data and / or inspection data for the pattern electrode sheet; a step of associating the pattern indicator data with the generated measurement data and / or inspection data; and a step of generating monitoring data for manufacturing a battery, on the basis of the associated pattern indicator data and the measurement data and / or the inspection data.

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 incorporates as part of the present specification all the contents disclosed in Korean Patent Application No. 10-2024-0010828, dated January 24, 2024, U.S. Patent Application No. 18 / 607003, dated March 15, 2024, and Korean Patent Application No. 10-2025-0005010, dated January 13, 2025.

[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] The method may include: generating pattern indicator data indicating a plurality of positions in a pattern electrode sheet in which a coated portion and an uncoated portion are repeatedly arranged and a coated portion and an uncoated portion adjacent to the coated portion constitute one pattern; generating measurement data and / or inspection data for the pattern electrode sheet; correlating the pattern indicator data with the generated measurement data and / or inspection data; and generating monitoring data for battery manufacturing based on the associated measurement data and / or inspection data and the pattern indicator data. One position among the plurality of positions may be a position of at least one coated portion and an adjacent uncoated portion in the pattern electrode sheet.

[0009] One or more non-transitory processor-readable media may be provided storing executable instructions that, when executed by one or more processors, cause the one or more processors to perform the method.

[0010] The pattern indicator data may include pattern indicators and time values ​​matched to the pattern indicators, the measurement data and / or inspection data may include measurement values ​​and / or inspection values ​​and time values ​​matched to the measurement values ​​and / or inspection values, and the pattern indicators and the measurement values ​​and / or inspection values ​​may be associated with each other corresponding to the same time value.

[0011] According to one embodiment, the pattern indicator data may include pattern indicators, and the method may include a step of matching the pattern indicators with a plurality of locations on the pattern electrode sheet, wherein one pattern indicator is obtained by counting one location, and the count may be increased or decreased depending on the pattern indicator.

[0012] The above method may further include a step of determining a pattern with an abnormal pitch by comparing the set pattern pitch and the length of each pattern.

[0013] The length of the pattern can be derived by multiplying the difference between the boundary detection time point of the starting end of the coated portion included in the pattern and the boundary detection time point of the ending end of the uncoated portion by the moving speed of the pattern electrode sheet.

[0014] The length of the coating part can be derived by multiplying the difference between the boundary detection time of the starting end of the coating part and the boundary detection time of the ending end of the coating part by the moving speed of the pattern electrode sheet.

[0015] According to an exemplary embodiment, the method may further include a step of acquiring coordinate data including coordinate values ​​representing positions on the pattern electrode sheet,

[0016] The above coordinate values ​​may be associated with at least one of the following:

[0017] ⅰ) The above pattern indicators

[0018] ⅱ) The above measurement values ​​and / or inspection values

[0019] ⅲ) Time values ​​matched to the above pattern indicators and the above measurement values ​​and / or inspection values.

[0020] A sub-pattern indicator can be obtained by comparing the setting pattern pitch with the above coordinate data.

[0021] The above method may further include a step of comparing the set pattern pitch and the length of each pattern to determine a pattern with an abnormal pitch, and the length of each pattern may be determined based on the difference in coordinate values ​​between the starting end of the coated portion and the ending end of the uncoated portion of each pattern.

[0022] The above method may further include a step of deriving the length of the coating portion of each pattern based on the difference in coordinate values ​​between the start and end ends of the coating portion of each pattern.

[0023] According to an exemplary embodiment, when an uncoated section not included in the pattern exists between neighboring patterns of the pattern electrode sheet, a corresponding 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.

[0024] The above monitoring data is,

[0025] The pattern indicator data may include measurement data and / or inspection data associated with the pattern indicators, and may optionally include a roll map further including the coordinate data.

[0026] In another aspect of the present disclosure, a battery manufacturing system,

[0027] A first position measuring device configured to generate pattern indicator data representing a plurality of positions in a pattern electrode sheet in which a coated portion and a non-coated portion are repeatedly arranged and a coated portion and a non-coated portion adjacent to the coated portion constitute one pattern;

[0028] A measuring device and / or an inspection device configured to collect measurement data and / or inspection data for the above pattern electrode sheet; and

[0029] A server 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 indicators,

[0030] One of the plurality of positions may be a position of at least one coated portion and an adjacent uncoated portion in the pattern electrode sheet.

[0031] The above system,

[0032] may include one or more processors,

[0033] The first position measuring device is configured to generate pattern indicator data including pattern indicators and time values ​​matching the pattern indicators,

[0034] The measuring instrument and / or tester is configured to generate measurement values ​​and / or test values ​​and time values ​​matching the measurement values ​​and / or test values,

[0035] The one or more processors may be configured to correlate the pattern indicators and the measurement values ​​and / or test values ​​with each other in correspondence to the same time value.

[0036] The first position measuring device is configured to generate pattern indicator data including pattern indicators that match a plurality of positions on the pattern electrode sheet, wherein one pattern indicator is generated by counting one position, and the count can be increased or decreased according to the pattern indicator.

[0037] The above first position measuring device can be configured to determine a pattern with an abnormal pitch by comparing the set pattern pitch and the length of each pattern.

[0038] The above battery manufacturing system may further include a controller configured to control the movement of the pattern electrode sheet between the unwinder and the rewinder. The correlation between the pattern indicators and the measurement data and / or inspection data may be performed by the measuring device and / or inspection device, or the controller.

[0039]

[0040] The system may further include a second position measuring device configured to generate coordinate data including coordinate values ​​indicating the position of the pattern electrode sheet,

[0041] The above coordinate values ​​may be associated with at least one of the following:

[0042] ⅰ) The above pattern indicators

[0043] ⅱ) Measurement values ​​and / or inspection values ​​included in the above measurement data and / or inspection data

[0044] ⅲ) Time values ​​matched to the above pattern indicators and the above measurement values ​​and / or inspection values.

[0045] The server may be configured to generate a roll map including the pattern indicator data, measurement data and / or inspection data associated with the pattern indicators, and optionally further including the coordinate data.

[0046] The above roll map contains information about the pattern of abnormal beaches that is different from the set pattern pitch,

[0047] The pattern electrode sheet may include at least one piece of information about an uncoated section located between adjacent patterns and not included in the pattern.

[0048] The information about the above-mentioned non-coated section may be information about pattern indicators assigned to the non-coated section in the number of patterns obtained by dividing the length of the non-coated section by the set pattern pitch.

[0049] According to an exemplary embodiment of the present disclosure, an electrode having an uncoated portion adjacent to at least one coated portion indicated by one of pattern indicator data indicating a plurality of positions in a roll map stored in a memory; and

[0050] A battery may be provided that includes a case in which the above electrode is built in.

[0051] The above roll map represents a pattern electrode sheet in which coated portions and non-coated portions are repeatedly arranged, the roll map provides measurement data and / or inspection data of coated portions in the pattern electrode sheet, and the pattern indicator can indicate the position of at least one coated portion and an adjacent non-coated portion in the roll map corresponding to the electrode.

[0052] The above case may include a cell ID that identifies the pattern indicator to retrieve measurement data and / or inspection data of at least one coating portion on the electrode sheet corresponding to the pattern indicator.

[0053] According to the present invention, monitoring data for battery manufacturing can be generated using data reflecting a pattern indicator of a pattern electrode.

[0054] Therefore, battery manufacturing processes can be monitored to match the condition of the actual pattern electrode, improving quality traceability and data integrity.

[0055] The present invention also enables the acquisition of coordinate data in addition to pattern indicator data. Therefore, monitoring data containing both pattern indicators and coordinate values ​​can be generated, further improving the accuracy of the monitoring data.

[0056] 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.

[0057] Figure 1 illustrates a battery manufacturing system according to exemplary embodiments.

[0058] Figure 2 shows a visualized roll map and pattern electrodes.

[0059] Figure 3 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0060] Figure 4 shows a roll map of a pattern electrode sheet in which loading amount measurement data is arranged over time.

[0061] Figure 5 illustrates a battery manufacturing system according to exemplary embodiments.

[0062] Figure 6 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0063] Figure 7 shows a roll map of a pattern electrode sheet on which a pattern indicator and a sub-pattern indicator are displayed.

[0064] Figure 8 illustrates a battery manufacturing system according to exemplary embodiments.

[0065] Figure 9 shows pattern indicator data and coordinate data on a pattern electrode sheet having pattern electrodes formed on the upper and lower surfaces.

[0066] Figure 10 is a roll map showing pattern indicator data and coordinate data in coated and uncoated sections.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071]

[0072] Fig. 1 shows a battery manufacturing system (10) according to an exemplary embodiment.

[0073] 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 (180), and a display device (190).

[0074] 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.

[0075] The intermediary server (EIF) (1010) may be a device for communication between the process controllers of the manufacturing facility and the server (180). Accordingly, process event data generated from the coating device (11), the roll pressing device (12), the slitting device (13), and the winding device (14) may be received by the intermediary server (EIF) (1010), and the received process event data may be transmitted to the server (180). If necessary, the respective process controllers and the server (180) may also communicate directly. Accordingly, process event data generated from the coating device (11), the roll pressing device (12), the slitting device (13), and the winding device (14) may each be transmitted to the server (180).

[0076] The server (180) can generate monitoring data for battery manufacturing. Typically, the monitoring data can include a roll map including process event data. The roll map data can include data indicating a process event and coordinate values ​​matched with the data. The coordinate values ​​can indicate a location on an electrode. The server (180) can transmit a visualization command to a display device (190), and the display device (190) can visualize the roll map and display a visualized roll map (VRM).

[0077] The server (180) can create and store a roll map for each process (e.g., a coating process, a roll pressing process, or a slitting process).

[0078] 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).

[0079] 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.

[0080] Figure 2 shows a visualized roll map and pattern electrodes.

[0081] 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).

[0082] 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.

[0083] 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).

[0084] 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.

[0085] 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.

[0086] Figure 2(b) shows a pattern electrode in which a coated portion and an uncoated portion are repeatedly arranged along the longitudinal direction to form a pattern.

[0087] 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.

[0088] 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.

[0089] 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 patterned electrodes in which the coated portions and uncoated portions are intermittently coated. The present invention provides a battery manufacturing method and a battery manufacturing system capable of generating monitoring data based on pattern indicator data, which is position data suitable for such pattern electrodes.

[0090]

[0091] (Example 1)

[0092] Figure 3 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments. Figure 4 illustrates a roll map of a pattern electrode sheet in which loading amount measurement data is arranged over time.

[0093] The battery manufacturing method of the present invention includes a step (P110) of acquiring pattern indicator data including pattern indicators that intermittently indicate positions on the pattern electrode sheet when the pattern electrode sheet moves along the longitudinal direction, and measurement data and / or inspection data for the pattern electrode sheet. The pattern indicator may be a number, a letter, a symbol, and / or a code.

[0094] As described above, in the processes for producing patterned electrodes (coating, roll pressing, slitting, etc.), the patterned electrode sheet can be moved along the longitudinal direction. The patterned electrode sheet can be moved between an unwinder and a rewinder. In this case, a first electrode roll on which the patterned electrode sheet is wound can be loaded onto the unwinder. The patterned 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 patterned electrode sheet can be moved along the longitudinal direction by a conveyor or other driving means.

[0095] A pattern may refer to one coated portion and one uncoated portion continuous with 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 sheet cannot be completely expressed. Referring to Fig. 2(b), uncoated portions are located on both sides of one coated portion. 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, symbols, codes, numbers, and letters.

[0096] 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 a position on a moving pattern electrode sheet. Accordingly, the pattern counter may be a position measuring device that measures the position of the pattern electrode sheet. 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 intermittent position values ​​(pattern numbers) may be referred to as a first position measuring device. As described below, an encoder that measures continuous position values ​​(coordinate values) can be referred to as a second position measuring device.

[0097] The length of one pattern may vary depending on the type or model of the pattern electrode. The length of one pattern specified for a specific pattern electrode sheet may be referred to as the set pattern pitch. In other words, the pattern pitch obtained by adding the length of one set coated portion and the length of one set uncoated portion may be referred to as the set pattern pitch.

[0098] 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.

[0099] 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 pattern electrode sheet.

[0100] 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.

[0101] 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.

[0102] 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 pattern electrode sheet, the distance between the boundary lines can be obtained. The pitch sensor or the pattern counter may include a calculation unit for calculating the time and speed.

[0103] Referring to Fig. 4, the process of finding an abnormal pitch pattern by a pattern counter is described.

[0104] When the pattern 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.

[0105] 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.

[0106] For example, the pattern counter can count to increase the pattern number by 1 when detecting BL1 and BL3 for each pattern.

[0107] 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 pattern electrode sheet.

[0108] 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 and the moving speed of the pattern electrode sheet.

[0109] 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 pattern electrode sheet. In the same way, the pattern counter can obtain the length of the second pattern (#2).

[0110] 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.

[0111] 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 length of the pattern increases. The trigger board can convert the count value for each length of the generated pattern 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 number increases for each pattern (so-called ascending order). Or, it can count so that the pattern number 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.

[0112] 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 patterned electrode sheets, 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 of each process. The pattern counter can download information about the set pattern pitch from the controller or server and find patterns with abnormal pitches.

[0113]

[0114] Measurement data and / or inspection data can be acquired for the above pattern 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.

[0115] The measurement data may include measurement results expressed in numbers. For example, the measurement data may include dimensional data of the patterned electrode sheet (PES), such as thickness and width, data on the loading amount of the coating material on the patterned electrode sheet (PES), and data on mismatch between the coating lanes on the upper surface of the patterned electrode sheet (PES) and the coating lanes on the lower surface of the patterned electrode sheet (PES). As a non-limiting example, the measuring device may be any one of a web gauge and a thickness gauge from Thermofisher Scientific.

[0116] The inspection data may include judgments on the quality of a portion of a patterned electrode sheet (PES) and process events. For example, the inspection data may include data on the appearance of a patterned electrode sheet (PES) collected by an image-based inspection device such as a vision machine, data on short circuits and seams of the patterned electrode sheet (PES), data on a portion of the patterned electrode sheet (PES) on which sampling inspection has been performed, data on a portion of the patterned electrode sheet (PES) scheduled for scrapping, data on reference points indicating the positions of the patterned electrode sheet (PES), 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.

[0117] The above pattern indicator data, measurement data, and inspection data may be time series data. The pattern indicator data may include the pattern indicators and time values ​​matched to the pattern indicators, and the measurement data and / or inspection data may include measurement values ​​and / or inspection values ​​and time values ​​matched to the measurement values ​​and / or inspection values.

[0118] That is, pattern indicators, measurements and test values ​​can be aligned in time.

[0119] Referring to FIG. 3, the battery manufacturing method of the present invention may include a step (P120) of generating measurement data and / or inspection data associated with the pattern indicators by associating the pattern indicator data with the measurement data and / or inspection data.

[0120] For example, the pattern indicators and the measurement values ​​and / or inspection values ​​may be correlated with each other corresponding to the same time value.

[0121] In Fig. 4, the loading amounts Rt0 to Rt10 measured at each of the measurement points t0 to t10 are displayed.

[0122] At time t0, BL1 was detected by the pattern counter, at time t8, BL2 was detected, and at time t10, BL3 was detected. Therefore, the time values ​​corresponding to the pattern of pattern number #1 are t0, t8, and t10. The loading amounts measured at the time values ​​t0, t8, and t10 are Rt0, Rt8, and Rt10, and these loading amounts become measurement values ​​associated with the pattern number #1. More specifically, the loading amounts Rt0, Rt1, Rt2, Rt3, Rt4, Rt5, Rt6, Rt7, and Rt8 measured between time t0 and t8 become measurement values ​​associated with the coated portion between BL1 and BL2. In addition, the loading amounts Rt8, Rt9, and Rt10 measured between t8 and t10 become measurement values ​​associated with the uncoated portion between BL2 and BL3.

[0123] Additionally, the start and end 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 time values ​​for the start and end points. In this case, the seam measurement data can be associated with a pattern of pattern number #2 that matches the same time values ​​as the start and end points that detected T1.

[0124] 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 pattern 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 pattern electrode sheet. The calculation tool can be provided in, for example, a pattern counter, a process controller, a measuring instrument, or an inspection device.

[0125] The association of the above pattern indicator with measurement data and / or inspection data may be performed by the controller of the corresponding processing process in which the pattern electrode sheet is processed. In this case, the measurement data and inspection data acquired from the measuring device and / or inspection device may be transmitted to the controller, and the pattern indicator data acquired from the pattern counter may also be transmitted to the controller. The controller may correlate the pattern indicators with the measurement data and inspection data by comparing the time values ​​of the measurement data and inspection data with the time values ​​included in the pattern indicator data.

[0126] Alternatively, the association of the pattern indicator with the measurement data and / or inspection data may be performed in a measuring instrument and / or an inspection instrument. In this case, the pattern indicator data acquired from the pattern counter may be transmitted to the measuring instrument and / or inspection instrument directly or through a controller. The measuring instrument and / or inspection instrument may compare the time values ​​of the acquired measurement data and inspection data with the time values ​​included in the pattern indicator data to associate the pattern indicators with the measurement data and inspection data.

[0127]

[0128] Referring to FIG. 3, the battery manufacturing method of the present invention may include 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 indicators.

[0129] 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 measurement data and / or inspection data acquired for the pattern electrodes with pattern indicators, the status of each pattern, whether the electrodes are broken or defective, etc. can be easily identified. 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.

[0130] As illustrated in FIG. 4, multiple measurement values ​​can be assigned to a single pattern. In FIG. 4, ten measurement values ​​are associated with each pattern, but depending on the type of measuring instrument or tester, multiple measurement values ​​and / or test values ​​may be associated. In this way, as the size of the measurement data and / or test data increases, a load is placed on the server system for generating the monitoring data. This can slow down data processing speed. The measurement data and / or test data can be compressed to reduce the data size, thereby increasing data processing speed.

[0131] For example, a processing unit provided in a measuring device and / or an inspection device may be configured to generate compressed measurement data and / or inspection data based on pattern indicator data and measurement data and / or inspection data. The compressed measurement data and / or inspection data is smaller in size than the measurement data and / or inspection data associated with the pattern indicator data. The server resources for generating monitoring data may be reduced due to the compressed measurement data and / or inspection data.

[0132] The compressed measurement data and / or inspection data may include representative values ​​of the measurement data and / or inspection data, and pattern indicator data for the start and end points of a portion of the electrode sheet from which the measurement data and / or inspection data is collected. The compressed measurement data and / or inspection data may also include a time stamp indicating the date and time of collection of the measurement data and / or inspection data for each pattern or multiple patterns, an ID of the measurement device and / or inspection device, and an equipment ID.

[0133] For example, the processing unit of the measuring device and / or the tester may calculate a representative value of the measurement data and / or test data for each pattern of the electrode sheet. The representative value may include at least one of the mean, standard deviation, median, maximum value, and minimum value of the measurement data and / or test data for each pattern.

[0134] For example, if the loading amount data corresponding to pattern number #1 has 10 measurement values ​​corresponding to one scanning of the loading amount meter, the compressed measurement data may include a single representative value calculated based on the 10 measurement values. Therefore, 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 ​​smaller than a specific value may be excluded when calculating the representative value, for example, by considering them as values ​​measured in the uncoated portion of the pattern. That is, the representative value may be calculated from the measurement values ​​included in each pattern that are greater than or equal to a specific value.

[0135] Pattern indicators of the start and end points of each pattern of the electrode sheet from which measurement data and / or inspection data are collected may be determined based on the pattern indicator data. Alternatively, pattern indicators of the start and end points of a portion of the electrode sheet corresponding to a plurality of patterns grouped by group may be determined. The pattern indicators of the start and end points of the compressed measurement data and / or inspection data may be substantially identical to the pattern indicators of the start and end points of the measurement data and / or inspection data associated with the pattern indicator data.

[0136] Figure 5 illustrates a battery manufacturing system according to exemplary embodiments.

[0137] The above battery manufacturing system (1000) may include a battery manufacturing device (100), a server (180), and a user device (300).

[0138] 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 measuring device and / or an inspector (130), and a controller (140).

[0139] The unwinder (111) may be configured to unwind the patterned electrode sheet (PES) from the electrode roll (ER1). The rewinder (113) may be configured to wind the patterned electrode sheet (PES) onto the patterned electrode roll (ER2). Accordingly, the patterned electrode sheet (PES) may move between the unwinder (111) and the rewinder (113).

[0140] A process for manufacturing a battery (e.g., an electrode process) can be performed on a patterned electrode sheet (PES).

[0141] The electrode sheet or patterned electrode sheet (PES) can be processed by a processing device (115). For example, the processing device (115) may include a coater, and may coat an electrode slurry on the electrode sheet to form a patterned electrode sheet (PES). As another example, the processing device (115) may include a pressure roll, and a roll pressing process may be performed on the patterned electrode sheet (PES) coated with the electrode slurry. As another example, the processing device (115) may include a splicing die and a scrap port, and a portion of the patterned electrode sheet (PES) may be scraped. As another example, the processing device may include a slitting knife, and the patterned electrode sheet (PES) may be separated into a plurality of electrode sheets.

[0142] In this embodiment, a pattern indicator, which is a pattern number, may be used. The first position measuring device (125R, 125U) may be a pattern counter that counts pattern numbers on a pattern electrode. The pattern numbers continuously indicate positions on a pattern electrode sheet moving between an unwinder and a rewinder.

[0143] A first position measuring device (125U) installed on the unwinder side may be configured to sense the amount of electrode sheets or pattern electrode sheets (PES) unwound from the electrode roll (ER1) by the unwinder (1111). A controller (140) may be configured to collect pattern indicator data (PID) generated by the first position measuring device (125U).

[0144] The first position measuring device (125R) installed on the rewinder side may be configured to sense the amount of pattern electrode sheet (PES) wound onto the pattern electrode roll (ER2) by the rewinder (113). The 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). Hereinafter, the technical idea of ​​the present invention will be described focusing on an embodiment in which the controller (140) collects pattern indicator data (PID) generated by the first position measuring device (125R).

[0145] 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 measuring device and / or the inspector (130), and the server (180).

[0146] The measuring device may be configured to measure the pattern electrode sheet (PES) and collect measurement data (MD). The inspector may be configured to inspect the pattern electrode sheet (PES) 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.

[0147] 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 (131S) may include a TDI (Time Delay and Integration) camera, a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and a TOF (Time of Flight) sensor.

[0148] 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.

[0149] 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.

[0150] 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 value may be associated with the measurement data and / or inspection data (MD / ID) matching the same time value. 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.

[0151] According to an exemplary embodiment, the meter and / or tester (130) or the controller (140) can correct the pattern indicator data (PID) based on the offset length (OL).

[0152] Since the positions of the measuring instrument and / or the inspector and the first position measuring instrument are different, the portion of the pattern electrode sheet (PES) measured and / or inspected at the same time and the portion of the pattern electrode sheet (PES) that is the target of the pattern indicator detected by the first position measuring instrument may be different. Therefore, the pattern number of the pattern indicator data collected at the same time as the measurement data and / or inspection data is corrected by adding or subtracting the number of pattern numbers corresponding to the offset length, and the corrected pattern number can be associated with the measurement data and / or inspection data to obtain measurement data and / or inspection data associated with the corrected pattern numbers. This correction of the pattern indicator data can be performed in the processing unit (130P) or the controller (140) of the measuring instrument and / or inspector.

[0153] Measurement data and / or inspection data (PIMD / PIID) associated with the pattern indicator generated in the processing unit (130P) may be transmitted to the server (180) directly or through the controller (140). Alternatively, measurement data and / or inspection data (PIMD / PIID) associated with the pattern indicator generated in the controller (140) may be transmitted to the server (180).

[0154] The server (180) can generate monitoring data for battery manufacturing based on the pattern indicator data (PID) and measurement data and / or inspection data (PIMD / PIID) associated with the pattern indicators. In addition to generating a roll map, the server (180) performs various tasks for managing battery production. For example, a battery cell may include a cell ID formed on an electrode assembly or a case. The cell ID may include lot number and coordinate information of electrodes and separators included in the battery cell. The cell ID may be associated with a roll map of the electrodes and separator included in the battery cell. Accordingly, when an event such as a quality issue occurs in a battery cell that has already been shipped, the history of collective data for the manufacturing of the corresponding battery cell can be retrieved based on the cell ID.

[0155] The user device (300) can display a visualized roll map (VRM) as illustrated in FIG. 4. The user device (300) can be any device capable of communicating with the server (180), such as a workstation computer, a notebook computer, a laptop computer, a desktop computer, a tablet computer, a mobile device such as a smart phone, a wearable device, etc. The user device (300) can be configured to generate a request for loading the roll map. The server (180) can be configured to transmit data (D1, D2) of various types of roll maps to the user device.

[0156] (Example 2)

[0157] Fig. 6 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments. Fig. 7 illustrates a roll map of a pattern electrode sheet on which a pattern indicator and a sub-pattern indicator are displayed.

[0158] The battery manufacturing method of the present invention may include a step (P210) of acquiring pattern indicator data including pattern indicators that intermittently indicate a position on the pattern electrode sheet when the pattern electrode sheet moves along the longitudinal direction, coordinate data including coordinate values ​​that can continuously indicate a longitudinal position of the pattern electrode sheet, and measurement data and / or inspection data for the pattern electrode sheet.

[0159] In order to calculate the length (pitch) of the pattern or the length of the section where measurement data and / or inspection data are acquired, the method of using the moving speed or time difference of the pattern electrode sheet requires additional calculation tools. In addition, since the moving speed of the pattern electrode sheet is not always constant, there are cases where the specific data measurement point in time on the pattern electrode sheet and the position of the pattern electrode sheet at that point in time do not precisely correspond. For example, the moving speed of the pattern electrode sheet may vary depending on the specifications of the pattern electrode sheet, the type of model, the type of processing process, the driving mechanism of the processing device, etc. In this way, the method of indirectly calculating the position or distance of the pattern electrode sheet by using the varying moving speed and time difference may delay the data processing speed and increase the manufacturing cost.

[0160] In the embodiment of FIG. 6, pattern indicator data and coordinate data can be used together to indicate the longitudinal position of the pattern electrode sheet. For example, while pattern indicator data including pattern indicators that intermittently indicate the position on the pattern electrode sheet as the main position data can be acquired, coordinate data including coordinate values ​​that can continuously indicate the longitudinal position can be further acquired. The coordinate values ​​and the difference between the coordinate values ​​directly indicate the position of the pattern electrode sheet or the distance of a specific section. Therefore, by acquiring the coordinate data, position information about the pattern 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, status information about the pattern electrode sheet can be obtained more accurately and reliably.

[0161] 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 a pattern 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 pattern 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, the controller may receive the encoder value and convert the encoder value into a coordinate value through a predetermined calculation. Considering the load on the process controller, it may be preferable to directly convert the encoder into a coordinate value.

[0162] 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. 7.

[0163] Referring to Fig. 7, the pattern electrode sheet (PES) is progressing in the longitudinal direction X, which is the driving direction (MD).

[0164] 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) located in FIG. 7. 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 parts and the pattern number can be expressed in decimal units. For example, when the pattern electrode sheet moves 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. As the pattern electrode sheet moves by 800 mm and the first position measuring device detects the boundary (BL3) of the coating portion of pattern number #2, the controller can count the sub-pattern number from 0.1 Pt to 1.0 Pt to correspond to the coordinate value of each point. As described above, by comparing the set pattern pitch with the coordinate data and calculating the sub-pattern number, the pattern number can be displayed in more detail. Accordingly, the pattern with an abnormal pitch can be more easily identified.

[0165] In Fig. 7, the pattern with an abnormal pitch can be determined by comparing the set pattern pitch and the length of each pattern.

[0166] 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.

[0167] Referring to FIG. 6, the battery manufacturing method of the present invention may include a step (P220) of generating measurement data and / or inspection data associated with the pattern indicators and coordinate values ​​by associating the pattern indicator data, coordinate data, and the measurement data and / or inspection data.

[0168] As described in the first embodiment, the pattern indicators and the measurement values ​​of the measurement data and / or the inspection values ​​of the inspection data may be associated with each other corresponding to the same time value. In the second embodiment, in addition, the coordinate values ​​of the coordinate data may be associated with at least one of the following.

[0169] ⅰ) Pattern indicators

[0170] ⅱ) Measurement values ​​and / or test values

[0171] ⅲ) Pattern indicators and time values ​​matched to the above measurement values ​​and / or inspection values.

[0172] That is, since the coordinate values ​​are related to the pattern indicators, the coordinate data and the pattern indicator data are related.

[0173] Additionally, since the coordinate values ​​correspond to the measurement values ​​and / or inspection values, the coordinate data and the measurement data and / or inspection data are related.

[0174] From this, pattern indicator data can be associated with measurement data and / or inspection data based on coordinate values ​​(coordinate data) excluding time values ​​(time series data).

[0175] Additionally, the coordinate values ​​may be associated with the pattern indicators and time values ​​matched to the measurement values ​​and / or inspection values. In this case, or, the pattern indicator data is associated with the measurement data and / or inspection data based on the time values ​​(time series data) and coordinate values ​​(coordinate data).

[0176] The battery manufacturing method of the present invention may include a step (P230) of generating monitoring data for battery manufacturing based on the pattern indicator data, coordinate data, and measurement data and / or inspection data associated with the pattern indicators and coordinate values.

[0177] As monitoring data, a roll map including coordinate data can be provided. As shown in FIGS. 9 and 10 described below, a roll map for a pattern electrode can include pattern indicator data including pattern indicators, coordinate data including coordinate values, and measurement data or inspection data associated with the pattern indicators and coordinate values. By means of such a roll map, the length, state, and characteristics of the pattern on the pattern electrode sheet can be more comprehensively and intuitively grasped.

[0178] Figure 8 illustrates a battery manufacturing system according to exemplary embodiments.

[0179] The above battery manufacturing system (2000) may include a battery manufacturing device (100), a server (180), and a user device (300).

[0180] 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).

[0181] This embodiment differs from the first embodiment in that a second position measuring device (121, 123) is added. Coordinate data is acquired by the second position measuring device (121, 123), and this coordinate data is different in that it is associated with other data. Repeated descriptions of the same points between the second and first embodiments will be omitted.

[0182] For example, pattern indicator data (PID) that continuously indicates a position on a pattern electrode sheet is acquired by a first position measuring device (125R, 125U) that is a pattern counter. The controller (140) can collect pattern indicator data (PID) generated by, for example, the first position measuring device (125U) installed in the rewinder (113).

[0183] The second position measuring device is, for example, a rotary encoder.

[0184] Among the second position measuring devices, the first rotary encoder (121) may be configured to sense the amount of the patterned electrode sheet (PES) 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 patterned electrode sheet (ES). The first rotary encoder (121) may convert the unwinding amount signal to directly acquire 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).

[0185] The second rotary encoder (123) may be configured to sense the amount of patterned electrode sheet (PES) 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 sheet (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).

[0186] The controller (140) can associate the pattern indicator data (PID) with the coordinate data (CD).

[0187] The measuring instrument and inspector (130) can measure and / or inspect the pattern electrode sheet (PES) to collect measurement data (MD) and / or inspection data (ID).

[0188] The processing unit (130P) of the measuring instrument and / or inspection device 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).

[0189] The controller (140) can collect measurement data and / or inspection data (MD / ID) generated by the measuring instrument and / or inspection instrument (130).

[0190] 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 value may be associated with the measurement data and / or inspection data (MD / ID) matching the same time value. Alternatively, the coordinate values ​​of the coordinate data may be associated with the measurement data and / or inspection data or the measurement data and / or inspection data associated with the pattern indicator. 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. 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 pattern indicator with the measurement data and / or inspection data. Alternatively, the coordinate data and the measurement data and / or inspection data may be transmitted to the controller (140) so that the controller may associate the coordinate data with the measurement data and / or inspection data.

[0191] In the controller, coordinate data and pattern indicator data can be associated with measurement data and / or inspection data.

[0192] 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).

[0193] The principle of correcting coordinate data based on the offset length (OL) is the same as the principle of correcting the pattern indicator data described above. That is, since the positions of the measuring instrument and / or the inspection instrument and the second position measuring instrument are different, the portion of the pattern electrode sheet (PES) measured and / or inspected at the same time may be different from the portion of the pattern electrode sheet (PES) detected by the second position measuring instrument. Therefore, the coordinate data can be corrected by subtracting or adding the offset length to the coordinate data of the second position measuring instrument collected at the same time as the measurement data and / or inspection data.

[0194] The measurement data and / or inspection data (CMD / CND) associated with the coordinate data generated in the processing unit (130P), the measurement data and / or inspection data (PIMD / PIID) associated with the pattern indicator, and the measurement data and / or inspection data (PICMD / PICID) associated with the coordinate values ​​and the pattern indicator may be transmitted to the server (180) directly or through the controller (140). Alternatively, the measurement data and / or inspection data (CMD / CND) associated with the coordinate data generated in the controller (140), the measurement data and / or inspection data (PIMD / PIID) associated with the pattern indicator, and the measurement data and / or inspection data (PICMD / PICID) associated with the coordinate values ​​and the pattern indicator may be transmitted to the server (180).

[0195] The server (180) can generate a roll map including the pattern indicator data (PID) and coordinate data (CD), measurement data and / or inspection data (CMD / CND) associated with the coordinate data, measurement data and / or inspection data (PIMD / PIID) associated with the pattern indicator, and measurement data and / or inspection data (PICMD / PICID) associated with the coordinate values ​​and the pattern indicator. Since the roll map of the present embodiment primarily represents the measurement data and / or inspection data of the pattern electrode sheet based on the pattern indicator data and auxiliary represents the measurement data and / or inspection data based on the coordinate data, the visibility of information regarding the pattern of the pattern electrode sheet can be greatly improved.

[0196]

[0197] (Example 3)

[0198] Figure 9 shows pattern indicator data and coordinate data on a pattern electrode sheet having pattern electrodes formed on the upper and lower surfaces.

[0199] Figure 9 is a roll map of a double-sided electrode that simulates the coating state of an actual pattern electrode sheet. The portion of the pattern electrode sheet other than the coated portion is an uncoated portion.

[0200] In this example, the first uncoated portion on the right side of Fig. 9 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 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 indicator data. The roll map also displays coordinate data (expressed in meters) 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.

[0201] As shown in Fig. 9, a roll map can be generated not only for a single-sided electrode in which a coating is formed only on one side of a patterned electrode sheet, but also for a double-sided electrode in which a coating is formed on both sides of a patterned electrode sheet. 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 a 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.

[0202] 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. 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.

[0203] 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 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 is created in the roll map information, and the state of the pattern electrode sheet cannot be completely expressed. If the electrode process is managed and tracked with such a roll map, an error may occur. Therefore, the roll map needs to include information on the uncoated section that is not included in the pattern, along with information on patterns with an abnormal pitch that is different from the set pattern pitch. 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.

[0204] In this embodiment, information about reference points and seams is also included.

[0205] Reference points (M1, M2, M3) are marked at predetermined intervals on the pattern electrode sheet. The roll map can measure the positions of the actual reference points and display the positions and the intervals between the reference points. If the interval between the reference points changes from the preset reference point positions, the change in electrode length that occurred during the process or before and after the process can be identified. The indication of the connecting tape, which is a seam, 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 pattern electrode sheet that has gone through multiple processes can be more accurately identified.

[0206] Figure 9 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.

[0207] Figure 10 is a roll map displaying pattern indicator data and coordinate data in coated and uncoated sections. For example, the pattern indicator and sub-pattern indicator may be pattern numbers and sub-pattern numbers, respectively, and this is illustrated in Figure 10 as an example.

[0208] In Figure 10, the pattern number is displayed in units of sub-pattern numbers.

[0209] Additionally, coordinates are displayed at key points.

[0210] The roll map of Fig. 10 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 portion corresponding to two set pattern pitches and an uncoated portion corresponding to 0.6 times (0.6Pt) the set pattern pitch.

[0211] 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 as an electrode and needs to record the performance net. Among the pattern numbers in Fig. 10, 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.

[0212] 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.

[0213] Therefore, monitoring data and roll map data that match the status of the actual pattern electrode can be generated, thereby greatly improving data consistency.

[0214]

[0215] 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.

[0216] 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.

[0217] 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 memories or dynamic memories. The one or more memories may be of various types, for example.

[0218] Volatile and nonvolatile storage media may include, but are not limited to, 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.

[0219] 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.

[0220]

[0221] 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.

[0222] (Explanation of symbols)

[0223] 1000, 2000: Battery manufacturing system

[0224] 100: Battery manufacturing equipment

[0225] 180: Server

[0226] 111: unwinder, 113: rewinder, 115: processing mechanism,

[0227] 125U,125R: 1st position measuring device

[0228] 121, 123: Second position measuring device (first rotary encoder, second rotary encoder)

[0229] 130; measuring instrument, 130P: sensing unit, 130S: processing unit

[0230] 140: Controller

[0231] 300: User device

Claims

1. A step of generating pattern indicator data indicating a plurality of positions in a pattern electrode sheet in which a coated portion and a non-coated portion are repeatedly arranged and a coated portion and a non-coated portion adjacent to the coated portion constitute one pattern; A step of generating measurement data and / or inspection data for the above pattern electrode sheet; A step of associating the above pattern indicator data with the generated measurement data and / or inspection data; and Comprising a step of generating monitoring data for battery manufacturing based on associated measurement data and / or inspection data and pattern indicator data, A battery manufacturing method wherein one of the plurality of positions is a position of at least one coated portion and an adjacent uncoated portion in the pattern electrode sheet.

2. In paragraph 1, The above pattern indicator data includes pattern indicators and time values matched to the pattern indicators, The above measurement data and / or inspection data include measurement values and / or inspection values and time values matched to the measurement values and / or inspection values, A battery manufacturing method wherein the above pattern indicators and the above measurement values and / or inspection values are related to each other corresponding to the same time value.

3. In paragraph 1, The above pattern indicator data includes pattern indicators, A battery manufacturing method, wherein the method comprises a step of corresponding the pattern indicators to a plurality of locations on the pattern electrode sheet, wherein one pattern indicator is obtained by counting one location, and the count is increased or decreased according to the pattern indicator.

4. In paragraph 1, A battery manufacturing method further comprising a step of comparing the set pattern pitch and the length of each pattern to determine a pattern with an abnormal pitch.

5. In paragraph 4, A battery manufacturing method further comprising a step of deriving the length of the pattern by multiplying the difference between the boundary detection time point of the starting end of the coated portion and the boundary detection time point of the ending end of the uncoated portion by the moving speed of the pattern electrode sheet.

6. In paragraph 1, A battery manufacturing method further comprising a step of deriving the length of the coating portion by multiplying the difference between the boundary detection time of the starting end of the coating portion and the boundary detection time of the ending end of the coating portion by the moving speed of the pattern electrode sheet.

7. In paragraph 2, Further comprising a step of acquiring coordinate data including coordinate values indicating positions on the pattern electrode sheet, A battery manufacturing method wherein the above coordinate values are related to at least one of the following. ⅰ) The above pattern indicators ⅱ) The above measurement values and / or inspection values ⅲ) Time values matched to the above pattern indicators and the above measurement values and / or inspection values.

8. In paragraph 6, A battery manufacturing method further comprising a step of obtaining a sub-pattern indicator by comparing the setting pattern pitch with the above coordinate data.

9. In paragraph 6, It further includes a step of determining a pattern of abnormal pitch by comparing the set pattern pitch and the length of each pattern, A battery manufacturing method in which the length of each pattern is determined based on the difference in coordinate values between the starting end of the coated portion and the ending end of the uncoated portion of each pattern.

10. In paragraph 1, A battery manufacturing method further comprising a step of deriving the length of the coating portion of each pattern based on the difference in coordinate values between the start and end ends of the coating portion of each pattern.

11. In paragraph 1, A battery manufacturing method in which, when an uncoated section not included in the pattern exists between neighboring patterns of the pattern electrode sheet, a corresponding pattern indicator is provided for the uncoated section as many times as the number of patterns obtained by dividing the length of the uncoated section by a set pattern pitch.

12. In paragraph 2, The above monitoring data is, A battery manufacturing method comprising a roll map including the pattern indicator data, measurement data and / or inspection data associated with the pattern indicators, and optionally further including the coordinate data.

13. A first position measuring device configured to generate pattern indicator data indicating a plurality of positions in a pattern electrode sheet in which a coated portion and a non-coated portion are repeatedly arranged and a coated portion and a non-coated portion adjacent to the coated portion constitute one pattern; A measuring device and / or an inspection device configured to collect measurement data and / or inspection data for the above pattern electrode sheet; and A server 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 indicators, A battery manufacturing system, wherein one of the plurality of positions is a position of at least one coated portion and an adjacent uncoated portion on the pattern electrode sheet.

14. In paragraph 13, further comprising one or more processors, The first position measuring device is configured to generate pattern indicator data including pattern indicators and time values matching the pattern indicators, The measuring instrument and / or tester is configured to generate measurement values and / or test values and time values matching the measurement values and / or test values, A battery manufacturing system wherein the one or more processors are configured to correlate the pattern indicators and the measurement values and / or inspection values with each other in correspondence to the same time value.

15. In paragraph 13, A battery manufacturing system in which the first position measuring device is configured to generate pattern indicator data including pattern indicators that match a plurality of positions on the pattern electrode sheet, wherein one pattern indicator is generated by counting one position, and the count is increased or decreased according to the pattern indicator.

16. In paragraph 13, A battery manufacturing system in which the first position measuring device is configured to compare the set pattern pitch and the length of each pattern to determine a pattern with an abnormal pitch.

17. In paragraph 13, Further comprising a second position measuring device configured to generate coordinate data including coordinate values indicating the position of the pattern electrode sheet, The above coordinate values are related to at least one of the following battery manufacturing systems. ⅰ) The above pattern indicators ⅱ) Measurement values and / or inspection values included in the above measurement data and / or inspection data ⅲ) Time values matched to the above pattern indicators and the above measurement values and / or inspection values.

18. In paragraph 13, A battery manufacturing system wherein the server is configured to generate a roll map including the pattern indicator data, measurement data and / or inspection data associated with the pattern indicators, and optionally further including the coordinate data.

19. 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 the method of claim 1.

20. An electrode having an uncoated portion adjacent to at least one coated portion indicated by one of pattern indicator data representing a plurality of positions in a roll map stored in a memory; and Including a case in which the above electrode is built in, The above roll map represents a pattern electrode sheet in which coated portions and non-coated portions are repeatedly arranged, the roll map provides measurement data and / or inspection data of coated portions in the pattern electrode sheet, and the pattern indicator indicates the position of at least one coated portion and an adjacent non-coated portion in the roll map corresponding to the electrode. The case is a battery including a cell ID that identifies the pattern indicator to retrieve measurement data and / or inspection data of at least one coating portion on the electrode sheet corresponding to the pattern indicator.

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