Roll map generation system, and method for generating roll map

Abstract

According to exemplary embodiments, a method for generating a roll map is provided. The method comprises the steps of: collecting measurement data including measurement values of an electrode sheet on the basis of a measurement signal generated by measuring the electrode sheet, the electrode sheet including a plurality of coated part lanes and a plurality of uncoated parts; and processing the measurement data such that the plurality of coated part lanes are differentiated.

Description

[Revised 07.08.2024 under Rule 91] Roll Map Generation System and Roll Map Generation Method

[0001] The present invention relates to a system configured to generate a roll map representing a lot, which is a unit of a rolled electrode sheet, and a method for generating the roll map. This application claims the benefit of Korean Application No. 10-2023-0097120, filed July 26, 2023, which is incorporated herein by reference in its entirety.

[0002] 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.

[0003] 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.

[0004] The technical idea of ​​the present invention is to provide a system configured to generate a roll map containing information on the quality and defects of an electrode manufacturing process.

[0005] According to exemplary embodiments of the present invention for solving the above-described problem, a method for generating a roll map is provided. The method comprises the steps of collecting measurement data including measurement values ​​of an electrode sheet based on a measurement signal generated by measurement of an electrode sheet, wherein the electrode sheet includes a plurality of maintenance lanes and a plurality of non-maintained regions; and processing the measurement data so that the plurality of maintenance lanes are distinguished.

[0006] In the step of processing the above measurement data, the number of the plurality of maintenance lanes is determined.

[0007] The method further includes a step of comparing the number of the plurality of maintenance lanes determined by processing the measurement data with the process information of the electrode sheet.

[0008] The method further includes a step of setting a representative value of undifferentiated data of the measurement data as a reference value, when the number of the plurality of maintenance lanes determined by processing the measurement data is different from the process information of the electrode sheet.

[0009] The number of the plurality of maintenance lanes determined by processing the above measurement data is less than the number of the plurality of maintenance lanes of the process information of the electrode sheet.

[0010] The method further includes a step of correcting a representative value of undifferentiated data of the measurement data.

[0011] The electrode sheet includes a first section and a second section, and the number of a plurality of maintenance lanes determined from the measurement data of the first section is the same as the process information of the electrode sheet, and the number of a plurality of maintenance lanes determined from the measurement data of the second section is different from the process information of the electrode sheet, and the representative value of the second section of the measurement data is corrected based on the representative value of the first section of the measurement data.

[0012] The above first section and the above second section are adjacent.

[0013] The electrode sheet includes first to third sections, the number of a plurality of maintenance lanes determined from the measurement data of the first and second sections is the same as the process information of the electrode sheet, the number of a plurality of maintenance lanes determined from the measurement data of the third section is different from the process information of the electrode sheet, and the representative value of the third section of the measurement data is corrected based on the representative values ​​of the first and second sections of the measurement data.

[0014] The representative value of the third section of the measurement data is set as the average of the representative values ​​of the first and second sections of the measurement data.

[0015] The width of each of the plurality of maintenance lanes in the third section is determined based on the process information.

[0016] The electrode sheet includes first to third sections, the number of a plurality of maintenance lanes determined from the measurement data of the first and second sections is the same as the process information of the electrode sheet, the number of a plurality of maintenance lanes determined from the measurement data of the third section is different from the process information of the electrode sheet, and the representative value of the third section of the measurement data is corrected based on the representative value of the first section of the measurement data.

[0017] The first section is separated from the third section by the second section.

[0018] The representative value of the third section is set to the representative value of the first section.

[0019] According to exemplary embodiments of the present invention, a system may be provided for generating a roll map that enables feedback, feed forward, and tracking for an electrode process.

[0020] 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.

[0021] Figure 1 illustrates a roll map generation system according to exemplary embodiments.

[0022] Figure 2 is a plan view showing a portion of an electrode sheet.

[0023] Figure 3 is a graph showing the measurement amount of the electrode sheet.

[0024] Figure 4 is a graph showing the measurement amount of the electrode sheet.

[0025] FIG. 5 is a flowchart illustrating a roll map generation method according to exemplary embodiments.

[0026] Fig. 6 illustrates a roll map generation system according to exemplary embodiments.

[0027] Fig. 7 illustrates a roll map generation system according to exemplary embodiments.

[0028] Fig. 8 illustrates a roll map generation system according to exemplary embodiments.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033]

[0034] (Example 1)

[0035] FIG. 1 illustrates a roll map generation system (100) according to exemplary embodiments.

[0036] Fig. 2 is a plan view showing a portion of an electrode sheet (ES).

[0037] Figures 3 and 4 are graphs representing measurement data (MED) collected from an electrode sheet (ES). In Figures 3 and 4, the vertical axis represents the measurement amount, and the horizontal axis represents time. In Figures 3 and 4, the horizontal and vertical axes are expressed in arbitrary units.

[0038] Referring to FIGS. 1 to 4, the roll map generation system (100) may include an unwinder (111), a rewinder (113), a processing mechanism (115), a first rotary encoder (121), a second rotary encoder (123), a measuring device (130), a first controller (141), a second controller (143), and servers (151, 152, 153, 154, 155, 156).

[0039] The roll map generation system (100) may be configured to generate a roll map including data regarding an electrode sheet (ES). The roll map may represent the electrode sheet (ES) based on coordinates indicating a location on the electrode sheet (ES). A process for manufacturing a secondary battery may be performed on the electrode sheet (ES). The roll map may represent a history of the process performed on the electrode sheet (ES) and include data associated with the coordinates. Accordingly, the roll map enables feedback, feed forward, and tracking of the manufacturing process of the secondary battery, which will be described later.

[0040] The first electrode roll (ER1) on which the previous process has been performed can be loaded onto the unwinder (111). The unwinder (111) can be configured to unwind the electrode sheet (ES) from the first electrode roll (ER1). The rewinder (113) can be configured to wind the electrode sheet (ES) to form a second electrode roll (ER2). Accordingly, the electrode sheet (ES) can move between the unwinder (111) and the rewinder (113). Since the electrode process is performed on the electrode sheet (ES) unwound from the first electrode roll (ER1) and wound onto the second electrode roll (ER2), the electrode process can be a roll-to-roll process.

[0041] The roll map can be generated on a lot basis. The electrode sheet (ES) is wound onto a second electrode roll (ER2), and can be cut and separated after reaching a predetermined winding length. A lot is a production unit of a roll-to-roll process, and the separated second electrode roll (ER2) is an example of a lot. Accordingly, the server (154) can be configured to store the roll map of the previous process. The roll map of the previous process can correspond to the first electrode roll (ER1). In addition, the server (154) can be configured to generate and store the roll map of the current process. The roll map of the current process can correspond to the second electrode roll (ER2).

[0042] Time series data organized over time (i.e., according to the progress of the process) in the roll map can be associated with coordinate data (CD) collected based on the amount of movement (i.e., either the amount of winding or the amount of unwinding) of the electrode sheet (ES).

[0043] The manufacturing of secondary batteries involves a series of distinct processes, with leading processes influencing subsequent processes. If the time-series data from leading processes do not directly align with real-world workpieces, semi-finished products, and finished goods, it can be difficult to incorporate these data into subsequent processes. Hereinafter, the correction of subsequent processes based on data generated from the results of leading processes is referred to as feedforward.

[0044] Here, the workpiece refers to an article provided as a result of each process, such as an electrode sheet (ES) that has undergone the coating process, roll pressing process, and slitting process illustrated in FIG. 1. A semi-finished product may refer to one of separators, electrodes, and assemblies thereof cut through a notching process. The semi-finished product may also be a structure including a housing and an electrode assembly embedded in the housing (in some cases, the structure further includes an electrolyte). A product refers to an article that has been processed to be operable as a secondary battery through an activation process. The above-described definitions of the workpiece, semi-finished product, and product are for one aspect thereof and do not exclude conventional definitions thereof.

[0045] For feedforward, the time-series data of the roll map needs to be associated with the positions of real-world workpieces, parts, semi-finished products, and finished products. The roll map can associate the time-series data with coordinate data, which includes coordinates representing the positions of real-world workpieces, parts, semi-finished products, and finished products. Based on the coordinate data, the roll map can provide a match between the time-series data and real-world workpieces, parts, semi-finished products, and finished products. Accordingly, the creation of the roll map and feedforward based on the roll map can improve the productivity and quality of the secondary battery manufacturing process by quantifying and objectifying aspects of the process previously dependent on the arbitrary actions of the operator. Furthermore, the roll map of a preceding lot can be used to improve the process of a subsequent lot, an action referred to as process feedback. Process feedback using the roll map can include identifying process conditions and parameters that caused problems and defects based on the data contained in the roll map.

[0046] Furthermore, the roll map, as described below, is cumulatively generated for work-pieces, parts, semi-finished products, and finished products of unit processes, thereby allowing for tracking of the process history of shipped products (e.g., battery cells, battery modules, or battery packs). For example, a battery cell may include a cell ID formed on an electrode assembly or a case. The cell ID may include lot numbers and coordinate information of electrodes and separators included in the battery cell. In other words, the cell ID may be associated with a roll map of the electrodes and separators included in the battery cell. Accordingly, when an event such as a quality issue occurs in a battery cell that has already been shipped, historical data on the manufacturing of the corresponding battery cell may be retrieved based on the cell ID in order to identify the cause of the problem in the manufacturing process.

[0047] The electrode sheet (ES) can be processed by a processing device (115). For example, the processing device (115) may include a coater, and electrode slurry may be coated on the electrode sheet (ES). As another example, the processing device (115) may include a pressure roll, and a roll pressing process may be performed on the electrode sheet (ES) 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 electrode sheet (ES) may be scraped. As another example, the processing device may include a slitting knife, and the electrode sheet (ES) may be separated into a plurality of electrode sheets.

[0048] The coating process involves applying a coating material, such as electrode slurry, onto an electrode sheet (ES). The electrode slurry may include an electrode active material, a conductive agent, a binder, and a solvent. The electrode slurry can be provided by dissolving the electrode active material, conductive agent, binder, etc. in a solvent.

[0049] The roll pressing process involves passing an electrode sheet (ES) coated with electrode slurry between opposing press rolls. The press rolls can smooth the electrode surface and enhance the bonding strength between the active material and the current collector.

[0050] To increase the production capacity (e.g., GWh) per line of a secondary battery production facility, a coating process and a roll pressing process are performed on wide electrode sheets (ES). Subsequently, in a slitting process, the wide electrode sheets (ES) can be cut to the specifications of the battery cell.

[0051] The first rotary encoder (121) may be configured to detect the amount of electrode sheet (ES) unwound from the first electrode roll (ER1) by the unwinder (111). Accordingly, the first rotary encoder (121) may be configured to generate an unwound amount signal (UWAS) indicating the unwound amount of the electrode sheet (ES). The first rotary encoder (121) may be configured to transmit the unwound amount signal (UWAS) to the first controller (141). The first controller (141) may be configured to collect unwound amount data based on the unwound amount signal (UWAS) of the electrode sheet (ES).

[0052] The second rotary encoder (123) may be configured to detect the amount of electrode sheet (ES) wound from the second electrode roll (ER2) by the rewinder (113). Accordingly, the second rotary encoder (123) may be configured to generate a winding amount signal (WAS) indicating the winding amount of the electrode sheet (ES). The second rotary encoder (123) may be configured to transmit the winding amount signal (WAS) to the first controller (141). The first controller (141) may be configured to collect winding amount data based on the winding amount signal (WAS) of the electrode sheet (ES).

[0053] A portion of the electrode sheet (ES) may be scrapped in some cases, and accordingly, the amount of the electrode sheet (ES) wound by the unwinder (111) may be different from the amount of the electrode sheet (ES) wound by the rewinder (113). In addition, when the electrode sheet (ES) is stretched by pressure in the roll pressing process, the amount of the electrode sheet (ES) wound by the unwinder (111) may be different from the amount of the electrode sheet (ES) wound by the rewinder (113).

[0054] The first controller (141) may be configured to collect coordinate data (CD) of the electrode sheet (ES) based on either a winding amount signal (WAS) or an unwinding amount signal (UWAS) of the electrode sheet (ES). For example, the first controller (141) may determine a movement distance of the electrode sheet (ES) at the current process step based on the winding amount signal (WAS) of the electrode sheet (ES). Furthermore, by correcting the coordinates using the offset distance (OD), the relative positions of each portion of the electrode sheet (ES) being processed or detected within the electrode sheet (ES) may be known. Accordingly, coordinates indicating the relative positions of portions of the electrode sheet (ES) wound by the rewinder (113) within the electrode sheet (ES) at each point in time when roll-to-roll processing is performed on the electrode sheet (ES) may be determined. Hereinafter, the technical idea of ​​the present invention will be described with a focus on an embodiment in which the first controller (141) collects coordinate data (CD) based on the winding amount signal (WAS) of the electrode sheet (ES).

[0055] The coordinate data (CD) may include coordinates matching each portion of the electrode sheet (ES). That is, each arbitrary point on the electrode sheet (ES) may be matched with a coordinate. The coordinate may be a one-dimensional quantity in the machine direction (MD) (or longitudinal direction) of the electrode sheet (ES), but is not limited thereto. The coordinate may also be a two-dimensional quantity in the machine direction and the transverse direction (TD) (or width direction of the electrode sheet (ES)) of the electrode sheet (ES).

[0056] The sensing unit (131) of the measuring device may be configured to measure the electrode sheet (ES) to collect measurement data (MED) of the electrode sheet (ES). The sensing unit (131) may measure the electrode sheet (ES) by scanning. The sensing unit (131) may be configured to scan the electrode sheet (ES) in a transverse direction (TD). While the measuring device (130) performs scanning in the transverse direction (TD), the electrode sheet (ES) may be moved in the traveling direction (MD) by the unwinder (111) and the rewinder (113).

[0057] Arrows (AR1, AR2, AR3) in Fig. 2 indicate relative movement of the sensing unit (131) of the measuring device (130) with respect to the electrode sheet (ES). Arrows (AR1, AR3) indicate transverse direction (TD) scanning of the sensing unit (131) from one end of the electrode sheet (ES) to the other end, and arrow (AR2) indicates transverse direction (TD) scanning of the sensing unit (131) from the other end of the electrode sheet (ES) to one end.

[0058] Here, the maintenance lanes (L1, L2, L3) are portions of the electrode sheet (ES) coated with electrode slurry, and the uncoated portions (U1, U2, U3, U4) are portions of the electrode sheet (ES) not coated with electrode slurry. The uncoated portions (U1, U2, U3, U4) may be interposed between the maintenance lanes (L1, L2, L3), or may be at both ends of the electrode sheet (ES) in the transverse direction (TD).

[0059] The measurement data (MED) may include a plurality of measurement values ​​expressed in numbers. For example, the measurement data (MED) may include dimensional data of the electrode sheet (ES) such as thickness and width, loading amount data of the coating material on the electrode sheet (ES), dimensional data such as the width of the insulating material provided on the coating material and the overlapping width between the coating material and the insulating material, mismatch data between the holding portion lanes (L1, L2, L3) on the upper surface of the electrode sheet (ES) and the holding portion lanes (L1, L2, L3) on the lower surface of the electrode sheet (ES), etc. The loading amount here represents the amount of the coating material loaded per unit area of ​​the electrode sheet (ES) and may be the areal density of the coating material.

[0060] The measuring device (130) may include a sensing unit (131) and a processor (133). The sensing unit (131) may be configured to sense a physical quantity of an electrode sheet (ES) to generate a measurement signal (MS). For example, the sensing unit (131) may include a Time Delay and Integration (TDI) camera, a Complementary Metal Oxide Semiconductor (CMOS) image sensor, and a Time of Flight (TOF) sensor. The sensing unit (131) may also include an emitter and a receiver configured to perform measurements using non-destructive signals such as ultrasound, microwaves, terahertz waves, and infrared waves. The sensing unit (131) may also include analog and / or digital sensors such as a biosensor, a chemical sensor, a composition sensor, a current and / or power meter, an air quality sensor, a gas sensor, a Hall effect sensor, a brightness level sensor, and a light sensor. The measuring device (130) may include a pressure sensor, a temperature sensor, an ultrasonic sensor, a proximity sensor, a door status sensor, a motion tracking sensor, a humidity sensor, a visible light and infrared sensor, and a camera.

[0061] Hereinafter, as a non-limiting example, the technical idea of ​​the present invention will be described focusing on an embodiment in which the measuring device (130) is either a loading meter (e.g., a web gauge from Thermofisher Scientific) configured to measure a loading amount of a coating layer on a sheet material (SM) and a thickness meter, and the measurement data (MED) includes either loading amount values ​​or thickness values. A person skilled in the art will readily arrive at an embodiment in which the measuring device includes either one of the above-described sensors and the measuring device is configured to detect either one of the above-described measurement quantities, based on the description herein.

[0062] The roll map generation system (100) may further include an inspector configured to inspect the electrode sheet (ES) to collect inspection data. The inspection data may include judgments on the quality of portions of the electrode sheet (ES) and process events. For example, the inspection data may include data on the appearance of the electrode sheet (ES) collected by an image-based inspection device such as a vision machine, data on breaks and seams of the electrode sheet (ES), data on portions of the electrode sheet (ES) on which sampling inspection has been performed, data on portions of the electrode sheet (ES) scheduled to be scrapped, data on scrapped portions of the electrode sheet (ES), data on the quality of coating materials and insulating materials on the electrode sheet (ES), data on reference points indicating positions of the electrode sheet (ES), and defect data such as pinhole defects, crater defects, line defects, crack defects, side ring defects, island defects, fold defects, wrinkle defects, dent defects, and imprint defects. Reference points can be formed at predetermined intervals on the electrode sheet (ES), and the positions of other elements on the electrode sheet (ES) may be located based on the reference points. The inspection device may be any one of a color sensor, a seam sensor, a reference point sensor, and a vision machine.

[0063] The measurement data (MED) and inspection data described above may be time-series data. The measurement data (MED) and inspection data may be temporally ordered. Temporal ordering is a key characteristic of time-series data, which organizes events in the order in which they occur and arrive for processing. That is, the measurement data (MED) and inspection data may be stored based on the time at which the measurement and inspection were performed, and the measurement data (MED) and inspection data may be temporally associated. Accordingly, each measurement value of the measurement data (MED) may be matched to a time, and each inspection value of the inspection data may be matched to a time.

[0064] For example, measurement data (MED) may have a series of measurement values ​​and time values ​​associated with the series of measurement values. The measurement values ​​and time values ​​may be matched one-to-one, but are not limited thereto. As another example, defect data may have a value indicating a defect and a time value associated with the value indicating the defect. Here, indicating a defect means including information on at least one of the presence or absence of a defect and the type of defect.

[0065] The processor (133) may be configured to collect measurement data (MED) based on the measurement signal (MS) sensed by the sensing unit (131). The processor (133) may be connected to the sensing unit (131) by wire or wirelessly. The processor (133) may be configured to correct the measurement data (MED) by adding an offset measurement amount to each of a plurality of measurement values ​​of the measurement data (MED). Due to the progress of the process and the aging of the equipment, the measurement values ​​of the measurement data (MED) may differ from the actual values. The processor (133) may improve the reliability of the roll map generation system (100) and the method for generating the roll map by correcting the measurement values ​​of the measurement data (MED) based on the offset measurement amount. The offset measurement amount may be determined based on information known about the equipment system by a method such as a sample test.

[0066] According to exemplary embodiments, the processor (133) may be configured to receive an electrode specification file (ESF). The electrode specification file (ESF) may be transmitted to the processor (133) from a server (155) described below via the server (152). The file format of the electrode specification file (ESF) may be, but is not limited to, JavaScript Object Notation (JSON). The format of the electrode specification file (ESF) may have any file format that allows text-based data storage, such as extensible markup language (XML), comma separated value (CSV), Resource Description Framework (RDF), spreadsheet, Open Document Format (ODF), Portable Document Format (PDF), plain text file, and Hypertext Markup Language (HTML).

[0067] The electrode specification file (ESF) may be stored in the processor (133). The electrode specification file (ESF) may be stored in a memory device of the processor (133). The memory device of the processor (133) may include any one of an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Solid State Drive (SSD), and a Hard Disk Drive (HDD).

[0068] An electrode specification file (ESF) may include process information performed on an electrode sheet (ES). More specifically, the electrode specification file (ESF) may include the number of maintenance lanes (L1, L2, L3), the number of uncoated regions (U1, U2, U3, U4), the width of each of the maintenance lanes (L1, L2, L3), the width of each of the uncoated regions (U1, U2, U3, U4), and the range of a normal measurement amount (i.e., a loading amount).

[0069] The processor (133) may be configured to update measurement conditions based on an electrode specification file (ESF). The measurement conditions may include the number of maintenance lanes (L1, L2, L3) of the tested electrode sheet (ES), the number of untreated portions (U1, U2, U3, U4), the width of each of the maintenance lanes (L1, L2, L3), the width of each of the untreated portions (U1, U2, U3, U4), and the range of the normal measurement amount (i.e., the loading amount).

[0070] When the model of the battery cell being manufactured is changed and the recipe for the electrode sheet (ES) is updated, the measurement conditions of the measuring device (130) must also be updated. This is because when the specifications of the battery cell to be manufactured using the electrode sheet (ES) are changed, the processing of the electrode sheet (ES) and the processing of the measurement data (MED) accordingly are changed.

[0071] For example, as shown in FIG. 2, the processing of measurement data (MED) collected from an electrode sheet (ES) including three maintenance lanes (L1, L2, L3) may differ from the processing of measurement data collected from an electrode sheet including only a single maintenance lane. For a more precise secondary battery manufacturing process and feed forward after the coating process, the measurement data (MED) must be matched with the objects of collection (i.e., the plurality of maintenance lanes (L1, L2, L3)). The matching of parts of the measurement data (MED) with the plurality of maintenance lanes (L1, L2, L3) can further allow individual disposal of the plurality of maintenance lanes (L1, L2, L3) when a defect occurs, thereby improving the productivity and yield of secondary battery manufacturing.

[0072] In order to match the first portion of the measurement data (MED) collected from the maintenance lane (L1) with the maintenance lane (L1), it must be identified that the first portion of the measurement data (MED) was collected from the maintenance lane (L1). In order to match the second portion of the measurement data (MED) collected from the maintenance lane (L2) with the maintenance lane (L2), it must be identified that the second portion of the measurement data (MED) was collected from the maintenance lane (L2). In order to match the third portion of the measurement data (MED) collected from the maintenance lane (L3) with the maintenance lane (L3), it must be identified that the third portion of the measurement data (MED) was collected from the maintenance lane (L3).

[0073] In order to match the first to third portions of the measurement data (MED) with the plurality of maintenance lanes (L1, L2, L3), the processor (133) may be configured to process the measurement data (MED) based on updated measurement conditions. By updating the measurement conditions, the processor (133) may be aware that the measurement data (MED) has been collected from the plurality of maintenance lanes (L1, L2, L3), and accordingly, the processor (133) may be configured to perform an operation to recognize an object of collection of the measurement data (MED). Furthermore, if the number of maintenance lanes set by the electrode specification data (ESD) or the electrode specification file (ESF) (i.e., the number of maintenance lanes to be formed on the electrode sheet (ES) through the die coater) is different from the number of detected maintenance lanes, the electrode sheet (ES) may be determined to be defective.

[0074] Previously, electrode specification data (ESD) of a server (156) containing a model ID and a model recipe was not automatically updated to the measuring instrument (130), but rather, measurement conditions were manually updated by an operator. Manual updates by an operator can lead to incorrect measurement conditions, and incorrect measurement conditions result in large-scale judgment errors regarding the quality of the electrode sheet (ES).

[0075] According to exemplary embodiments, the server (155) may be configured to generate an electrode specification file (ESF) based on electrode specification data (ESD) transmitted from the server (156). The electrode specification file (ESF) may be transmitted to the processor (133) via the server (152). The measurement conditions of the processor (133) are automatically updated based on the electrode specification file (ESF), so that incorrect specification of the measurement conditions can be prevented and the reliability of the roll map can be improved.

[0076] The processor (133) may be configured to calculate the width of a plurality of maintenance lanes (L1, L2, L3) based on the measurement data (MED). If a set number or more of measurement values ​​of the electrode sheet (ES) that are equal to or greater than the threshold value (CP) among the measurement values ​​of the measurement data (MED) are consecutive, the processor (133) may match the subsequent data points to the maintenance section. Similarly, if a set number or more of measurement values ​​of the electrode sheet (ES) that are less than the threshold value (CP) among the values ​​of the measurement data (MED) are consecutive, the processor (133) may match the subsequent measurement values ​​of the electrode sheet (ES) to the untreated section.

[0077] The processor (133) may be configured to compare the measurement data (MED) with the electrode specification file (ESF). More specifically, the processor (133) may be configured to compare the number of maintenance lanes (L1, L2, L3), the number of untreated portions (U1, U2, U3, U4), the width of each of the maintenance lanes (L1, L2, L3) and the width of each of the untreated portions (U1, U2, U3, U4), which are determined based on the measurement data (MED), with the process information of the electrode sheet (ES) in the electrode specification file (ESF). The processor (133) may be configured to determine a defect of the electrode sheet (ES) based on the measurement data (MED) and the electrode specification file (ESF).

[0078] The processor (133) may be configured to identify incorrect measurement data (MED) based on the measurement data (MED) and the electrode specification file (ESF). Examples of incorrect measurement data (MED) may include a mismatch between the number of maintenance lanes (L1, L2, L3) and the electrode specification data (ESD), misrecognition of the positions of the unused portions (U1, U2, U3, U4), and failure to detect a measurement amount (i.e., loading amount or thickness). Generally, measurement of loading amount and thickness is based on a thermodynamic method, and incorrect detection of loading amount and thickness may be caused by thermal phenomena caused by various aspects of the process.

[0079] If some of the unused portions (U1, U2, U3, U4) are not recognized by the processor (133), the number of the plurality of maintenance portion lanes (L1, L2, L3) may be different from the process information of the measurement conditions updated by the electrode specification file (ESF). If some of the unused portions (U1, U2, U3, U4) are not recognized by the processor (133), the number of the plurality of maintenance portion lanes (L1, L2, L3) may be less than the number of the plurality of maintenance portion lanes (L1, L2, L3) of the process information of the measurement conditions updated by the electrode specification file (ESF).

[0080] In this case, since the portions collected from each of the plurality of maintenance lanes (L1, L2, L3) among the measurement data (MED) are not recognized, the measurement data (MED) and the plurality of maintenance lanes (L1, L2, L3) may not be properly matched. In this case, since the measurement data (CMD) associated with the coordinates of each of the plurality of maintenance lanes (L1, L2, L3) cannot be collected separately, an error may occur in the generation of the roll map.

[0081] According to exemplary embodiments, the processor (133) may be configured to set a representative value of undifferentiated data of the measurement data (MED) as a reference value to collect coordinate-associated measurement data (CMD). Here, the reference value may be, for example, but is not limited to, 0. The reference value may have any value that may indicate that a plurality of maintenance lanes (L1, L2, L3) are not recognized as distinct. The representative value set as the reference value may be included in the coordinate-associated measurement data (CMD).

[0082] Here, the measurement data (MED) can be distinguished by comparing the measurement values ​​of the measurement data (MED) with the threshold value (CP), as described below. For example, in the measurement data (MED) of FIG. 3, the boundaries of the first to fifth portions (POR1, POR2, POR3, POR4, POR5) can be distinguished based on the threshold value (CP). Accordingly, the first portion (POR1) can be matched to the maintenance lane (L1), the second portion (POR2) ​​can be matched to the unlined portion (U2), the third portion (POR3) can be matched to the maintenance lane (L2), the fourth portion (POR4) can be matched to the unlined portion (U3), and the fifth portion (POR5) can be matched to the maintenance lane (L3).

[0083] On the other hand, in the measurement data (MED) illustrated in FIG. 4, the boundaries of the first to third portions (POR1', POR2', POR3') may be distinguished based on the threshold value (CP), but the boundaries of the third and fifth portions (POR3', POR4', POR5) may not be distinguished based on the threshold value (CP). Accordingly, the first portion (POR1) may be matched to the maintenance lane (L1), the second portion (POR2) ​​may be matched to the unmaintained portion (U2), but the third to fifth portions (POR3, POR4, POR5) may be recognized as a single maintenance lane.

[0084] The undifferentiated data of the measurement data (MED) is a portion of the measurement data (MED) in which all boundaries of the plurality of maintenance lanes (L1, L2, L3) are unknown due to unrecognition of the unidentified portions (U1, U2, U3, U4). For example, the fact that all boundaries of the plurality of maintenance lanes (L1, L2, L3) are unknown means that the unidentified portion (U2) is not recognized and thus the maintenance lanes (L1, L2) are recognized as a single maintenance lane, that the unidentified portion (U3) is not recognized and thus the maintenance lanes (L2, L3) are recognized as a single maintenance lane, and that the unidentified portions (U2, U3) are not recognized and thus the maintenance lanes (L1, L2, L3) are recognized as a single maintenance lane.

[0085] According to exemplary embodiments, when some of the plurality of maintenance lanes (L1, L2, L3) are not recognized, the processor (133) may be configured to distinguish the unrecognized maintenance lanes (L1, L2, L3) and the unidentified regions (U1, U2, U3, U4) based on the measurement conditions updated by the electrode specification file (ESF). According to exemplary embodiments, when some of the plurality of maintenance lanes (L1, L2, L3) are not recognized, the processor (133) may be configured to determine the width of the unrecognized maintenance lanes (L1, L2, L3) based on the measurement conditions updated by the electrode specification file (ESF).

[0086] According to exemplary embodiments, the processor (133) may be configured to correct a representative value of coordinate-related measurement data (CMD) set as a reference value due to undifferentiated data of measurement data (MED).

[0087] For example, a representative value of coordinate-related measurement data (CMD) set as a reference value can be corrected based on adjacent representative values. More specifically, when the representative value of the scanning area (S3) of FIG. 2 is set as the reference value, the representative value of the scanning area (S3) may also be set as the representative value of the scanning area (S2).

[0088] As another example, the representative value of the coordinate-related measurement data (CMD) set as the reference value can be corrected based on adjacent representative values. That is, the representative value of the coordinate-related measurement data (CMD) set as the reference value can also be corrected based on two or more representative values. More specifically, when the representative value of the scanning area (S3) of FIG. 2 is set as the reference value, the representative value of the scanning area (S3) can be set as the average of the representative values ​​of the scanning areas (S1, S2).

[0089] The first controller (141) may be in operative communication with the first and second rotary encoders (121, 123), the measuring device (130) and additional measuring devices and inspectors via a wired or wireless data network. The data network may be unidirectional or bidirectional. The data network may be implemented by a public network and / or a specialized network using physical channels, WiFi, Bluetooth and / or other frequency bands. The first and second rotary encoders (121, 123), the measuring device (130) and additional measuring devices and inspectors may be configured to collect data from equipment, workpieces, semi-finished products and products within the roll map generation system (100), or to generate signals for collecting data.

[0090] The first controller (141) may be configured to transmit coordinate data (CD) to the processor (133). The processor (133) may be configured to associate measurement data (MED) with the coordinate data (CD) to generate coordinate-related measurement data (CMD). Generally, the measurement data (MED) may be processed based on a trigger point.

[0091] As a non-limiting example, the trigger point for processing of measurement data (MED) may be the completion of scanning. For example, the sensing unit (131) may scan the electrode sheet (ES) in the width direction of the electrode sheet (ES), and for each scan, measurement data (MED) may be stored, processed, modulated, and transmitted. In another example, the trigger point may be the completion of multiple scans or the completion of a portion of a scan. Examples of processing of measurement data (MED) may include storing measurement data (MED), manipulating measurement data (MED) (e.g., generating coordinate-associated measurement data (CMD)), and transmitting measurement data.

[0092] According to exemplary embodiments, the measuring device (130) may be configured to calibrate the coordinate data (CD) based on the position of the sensing unit (131). More specifically, the measuring device (130) may be configured to correlate the coordinates of the coordinate data (CD) with the measured values ​​of the measurement data (MED) by calibrating the coordinate data (CD) based on an offset length (OD).

[0093] The measuring device (130) can collect measurement data (MED) of a portion corresponding to (e.g., overlapping) the sensing unit (131), and the coordinate data (CD) is collected by a second rotary encoder (123) spaced apart from the sensing unit (131) as described above. Therefore, the portion of the electrode sheet (ES) corresponding to the winding amount signal (UWAS) generated at the same time and the portion of the electrode sheet (ES) corresponding to the measurement signal (MS) may be different.

[0094] According to exemplary embodiments, the processor (133) may be configured to collect coordinate-related measurement data (CMD), correct coordinate data (CD) collected at the same time as the measurement data based on an offset length (OD), and associate representative coordinates (e.g., start coordinates and end coordinates) of the corrected coordinate data (CD) with representative values ​​of measurement values ​​of the measurement data. The measurement values ​​of the measurement data may be matched with times, and the measurement values ​​of the coordinate-related measurement data (CMD) may be matched with the corrected representative coordinates (e.g., start coordinates and end coordinates).

[0095] Between the sensing unit (131) and the rewinder (113), a plurality of guide rolls may be interposed to define the movement path of the electrode sheet (ES). Accordingly, the offset length (OD) may be defined as the length of the electrode sheet (ES) between the sensing unit (131) and the rewinder (113) according to the movement path of the electrode sheet (ES). The offset length (OD) may be equal to the straight-line distance between the sensing unit (131) and the rewinder (113), or may be greater than the straight-line distance between the sensing unit (131) and the rewinder (113).

[0096] The processor (133) may be configured to collect coordinate-related measurement data (CMD) based on measurement data (MED) and coordinate data (CD). The electrode sheet (ES) may include a plurality of scanning areas (S1, S2, S3). Each of the plurality of scanning areas (S1, S2, S3) is a portion of the electrode sheet (ES) that is inspected by one scan of the sensing unit (131). The scanning area (S1) may include a plurality of sections (S11, S12, S13, S14, S15, S16, S17). The scanning area (S2) may include a plurality of sections (S21, S22, S23, S24, S25, S26, S27). The scanning area (S3) may include multiple sections (S31, S32, S33, S34, S35, S36, S37).

[0097] The coordinate-related measurement data (CMD) may include representative values ​​derived from the measurement values ​​of the measurement data (MED) of each of the plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) of the electrode sheet (ES). The representative values ​​of each of the plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) of the electrode sheet (ES) may include at least one of the mean, standard deviation, median, maximum and minimum values ​​of their measurement data (MED).

[0098] The coordinate-related measurement data (CMD) may include representative coordinates (e.g., start coordinates and end coordinates) of each of a plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) of the electrode sheet (ES). Each of the representative values ​​of the coordinate-related measurement data (CMD) can be matched with the representative coordinates (e.g., start coordinates and end coordinates) of a corresponding one of the plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37).

[0099] Sections (S11, S21, S31) may correspond to the unlined portion (U1). Sections (S12, S22, S32) may correspond to the maintenance portion lane (L1). Sections (S13, S23, S33) may correspond to the unlined portion (U2). Sections (S14, S24, S34) may correspond to the maintenance portion lane (L2). Sections (S15, S25, S35) may correspond to the unlined portion (U3). Sections (S16, S26, S36) may correspond to the maintenance portion lane (L3). Sections (S17, S27, S37) may correspond to the unlined portion (U4).

[0100] To produce representative values ​​of coordinate-related measurement data (CMD), the processor (133) may be configured to match measurement values ​​of the measurement data (MED). If a set number (e.g., 5) or more of measurement values ​​of the electrode sheet (ES) that are greater than or equal to a threshold value (CP) among the measurement values ​​of the measurement data (MED) are consecutive, the processor (133) may be configured to match the subsequent data points with the maintenance lanes (L1, L2, L3).

[0101] Similarly, if the measured values ​​of the electrode sheet (ES) less than the threshold value (CP) among the measured values ​​of the measurement data (MED) are consecutive by a set number or more, the processor (133) may be configured to match the measured values ​​of the subsequent electrode sheet (ES) with the unused portions (U1, U2, U3, U4). On the other hand, if the measured values ​​less than the threshold value (CP) of a portion of the measurement data (MED) are consecutive by a set number or less, the processor (133) may recognize that the portion of the measurement data (MED) does not include unused portions. /

[0102] For example, in scanning of section (S11), the measurement values ​​of the electrode sheet (ES) may be less than the threshold value (CP), and the measurement data (MED) collected from section (S11) may be determined to have been collected from the untreated area (U1) and may be matched with section (S11).

[0103] When a section (S12) is scanned after scanning a section (S11), the number of measurement values ​​of the electrode sheet (ES) that are continuously greater than or equal to a threshold value (CP) is greater than or equal to a set number, so that the measurement data (MED) collected from the section (S12) can be determined to have been collected from the maintenance lane (L1) and can be matched with the section (S12).

[0104] When a section (S13) is scanned after scanning a section (S12), the number of measurement values ​​of the electrode sheet (ES) that are less than the threshold value (CP) that arrives continuously is greater than or equal to a set number, so that the measurement data (MED) collected from the section (S13) can be determined to have been collected from the unused portion (U2) and can be matched with the section (S13).

[0105] When a section (S14) is scanned after scanning a section (S13), the number of measurement values ​​of the electrode sheet (ES) that are continuously greater than or equal to a threshold value (CP) is greater than or equal to a set number, so that the measurement data (MED) collected from the section (S14) can be determined to have been collected from the maintenance lane (L2) and can be matched with the section (S14).

[0106] When a section (S15) is scanned after scanning a section (S14), the number of measurement values ​​of the electrode sheet (ES) that are less than the threshold value (CP) that arrives continuously is greater than or equal to a set number, so that the measurement data (MED) collected from the section (S15) can be determined to have been collected from the unused portion (U3) and can be matched with the section (S15).

[0107] When a section (S16) is scanned after scanning a section (S15), the number of measurement values ​​of the electrode sheet (ES) that are continuously greater than or equal to a threshold value (CP) is greater than or equal to a set number, so that the measurement data (MED) collected from the section (S16) can be determined to have been collected from the maintenance lane (L3) and can be matched with the section (S16).

[0108] When a section (S17) is scanned after scanning a section (S16), the number of measurement values ​​of the electrode sheet (ES) that are less than the threshold value (CP) that arrives continuously is greater than or equal to a set number, so that the measurement data (MED) collected from the section (S17) can be determined to have been collected from the unused portion (U4) and can be matched with the section (S17).

[0109] The matching of the measurement data (MED) collected from the plurality of sections (S21, S22, S23, S24, S25, S26, S27) of the scanning area (S2) and the matching of the measurement data (MED) collected from the plurality of sections (S31, S32, S33, S34, S35, S36, S37) of the scanning area (S3) is substantially the same as that described for the plurality of sections (S11, S12, S13, S14, S15, S16, S17) of the scanning area (S1).

[0110] The processor (133) may be configured to match the measurement values ​​of the measurement data (MED) of the electrode sheet (ES) with a plurality of corresponding sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37). The processor (133) may be configured to calculate a representative value of the measurement values ​​of each of the portions of the measurement data (MED) matched to the plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37).

[0111] The calculation of the representative value of each of the plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) by the processor (133) may be based on the measurement conditions updated by the electrode specification file (ESF). That is, the measurement conditions of the processor (133) can be updated based on the number of maintenance lanes (L1, L2, L3) of the electrode specification file (ESF), the number of unmaintained portions (U1, U2, U3, U4), the width of each of the maintenance lanes (L1, L2, L3), the width of each of the unmaintained portions (U1, U2, U3, U4), and the range of the normal measurement amount (i.e., loading amount or thickness), and the processor (133) can process the measurement data (MED) to produce a representative value of each of the plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) based on the updated measurement conditions. Accordingly, the reliability of processing measurement data (MED) of the electrode sheet (ES) can be improved.

[0112] The processor (133) may be configured to generate evaluation data based on coordinate-related measurement data (CMD). The evaluation data may include a judgment value of a process of each of a plurality of sections of the electrode sheet (ES). The judgment value of a process of each of a plurality of sections of the electrode sheet (ES) may be determined based on a comparison of a set range and the measurement values ​​(or a representative value of the measurement values).

[0113] For example, a representative value within a first range may be determined as normal, a representative value within a second range that is greater than the first range may be determined as excessive, a representative value within a third range that is greater than the second range may be determined as very excessive, a representative value within a fourth range that is smaller than the first range may be determined as insufficient, and a representative value within a fifth range that is smaller than the fourth range may be determined as very insufficient.

[0114] Here, if the lower limit of the second range is greater than or equal to the upper limit of the first range, the second range is greater than the first range. Similarly, if the upper limit of the fourth range is less than or equal to the lower limit of the first range, the fourth range is less than the first range.

[0115] The processor (133) may be configured to transmit coordinate-related measurement data (CMD) to the first controller (141). The coordinate-related measurement data (CMD) transmitted to the second controller (143) may be transmitted to the server (154) via the server (151). The second controller (143) and the server (151) may relay communication of data including the coordinate-related measurement data (CMD) between the server (154) and the first controller (141). However, the present invention is not limited thereto. The first controller (141) may also directly transmit the coordinate-related measurement data (CMD) to the server (154).

[0116] The second controller (143) may be configured to control the operation of the unwinder (111), the rewinder (113), and the processing mechanism (115). The second controller (143) may be configured to generate signals for operation and stop of the unwinder (111), the rewinder (113), and the processing mechanism (115). The signals for operation and stop of the unwinder (111), the rewinder (113), and the processing mechanism (115) may be generated based on electrode specification data (ESD).

[0117] In order to control the process, a communication line may be installed between the second controller (143) and the server (154) via the server (151) and connecting the second controller (143) and the server (154). Accordingly, data transmission via the second controller (143) can reduce resources required for installation of the communication line and can improve data processing and management efficiency compared to the case where the first and second rotary encoders (121, 123) and the measuring device (130) directly transmit the winding amount signal (UWS), the winding amount signal (WS) and the measurement signal (MS) to the server (154) and the case where the first controller (141) directly transmits the coordinate-related measurement data (CMD) to the server (154).

[0118] The server (151) may include a program for communication between the second controller (143) of the manufacturing facility and the server (154). The server (151) may be implemented in hardware as described below. The language and protocol of the server (154) may be different from the language and protocol of the second controller (143). For example, the language of the server (154) may be SQL, and the language of the second controller (143) may be a ladder diagram.

[0119] The server (151) may be a communication server. The server (151) may be configured to convert electrode specification data (ESD) transmitted from the server (154) into the language of the second controller (143). In addition, the server (151) may be configured to convert coordinate-related measurement data (CMD) into the language of the server (154) and record the coordinate-related measurement data (CMD) in the database of the server (154).

[0120] Electrode specification data (ESD) may include a product ID and recipe for identifying a product model to be manufactured using the electrode sheet (ES). The recipe of the electrode specification data (ESD) may include, more specifically, various information related to the process of the electrode sheet (ES), such as the number of lots being processed in the current process, the number of maintenance lines formed on the electrode sheet (ES), process conditions including temperature, humidity, and pressure, the moving speed of the electrode sheet (ES), the discharge amount of the coating die, the pressure of the pressurizing rolls, and other process parameters.

[0121] The server (154) may be configured to generate a roll map. The roll map may be generated on a lot-by-lot basis. The roll map may include data regarding specifications of the lot. The specifications of the lot may include, for example, a lot number, a length of the wound electrode sheet (ES), a width of the electrode sheet (ES), and materials and compositions used in processing the electrode sheet (ES). The roll map may include the aforementioned coordinate-related measurement data (CMD). The roll map may further include inspection data matched with coordinates of the coordinate data (CD) and additional measurement data matched with coordinates of the coordinate data (CD).

[0122] According to exemplary embodiments, the server (154) may be a data processing system that supports various activities necessary for managing the manufacturing of secondary batteries, such as work schedule management, work instructions, quality control, and work performance aggregation. The server (154) may be, for example, Manufacturing Execution System (MES) software. The server (154) may be configured to input, process, output, and communicate data necessary for electrode manufacturing, such as coating processes, press processes, and manufacturing processes.

[0123] The processor (133) may be configured to transmit measurement data (MED) to the server (153). The server (153) may be configured to transmit the measurement data (MED) to the server (155) in response to an API call from the server (155). The server (155) may be configured to store a roll map, and by loading the measurement data (MED) into the server (155), the data of the roll map and the measurement data (MED) of the circle may be associated.

[0124] An intermediate roll map can be provided by correlating roll map data with circular measurement data (MED). In addition to the roll map, which provides information on production performance based on defects and defects, the intermediate roll map provides information on circular measurement data, enabling statistical production management. Consequently, the intermediate roll map can provide additional insight into workpiece quality, process performance, OEE (Overall Equipment Effectiveness) drill-down, anomaly detection, traceability, preventative maintenance, and predictive alarms.

[0125] The server (155) may be configured to store and process inspection data of the electrode sheet (ES). The server (155) may continuously monitor the processing of the electrode sheet (ES) based on the inspection data, thereby managing the quality of the processing of the electrode sheet (ES). According to exemplary embodiments, the server (155) may be a Statistical Process Controller (SPC). The server (155) may collect and analyze manufacturing data in near real-time, thereby promptly identifying problem conditions and providing alerts to operators before potential problems occur.

[0126] The server (156) may be a solution that manages all information and processes at all stages of the product or service lifecycle across the global supply chain. For example, the server (156) may be a Product Lifecycle Management (PLM) system. The server (156) may be configured to store data such as items, parts, products, documentation, requirements, engineering change orders, quality, and workflows. The server (156) may be configured to generate and store electrode specification data (ESD). The server (156) may be configured to transmit the electrode specification data (ESD) to the first server and servers (154 and 155).

[0127] The processor (133), the first controller (141), the second controller (143), and the servers (151 to 156) may be implemented by hardware, firmware, software, or a combination thereof. For example, the processor (133), the first controller (141), the second controller (143), and the servers (151 to 156) may include computing devices such as workstation computers, desktop computers, laptop computers, and tablet computers. The processor (133), the first controller (141), the second controller (143), and the servers (151 to 156) may include any one of simple controllers, complex processors such as microprocessors, CPUs, GPUs, processors configured by software, dedicated hardware, and firmware. The processor (133), the first controller (141), the second controller (143), and the servers (151 to 156) may be implemented by, for example, a general-purpose computer or application-specific hardware such as a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit).

[0128] The servers (151-156) may include physical servers or cloud servers. The servers (151-156) may provide data and analysis results to workers via various frameworks. The frameworks may include protocols that support data transmission, allowing the display device to visualize data through a user interface and provide updated visualizations when new data is calculated by the servers (151-156). The protocols that support the data transmission may use HTML, JavaScript, and / or JSON.

[0129] Servers (151-156) may include various Application Programming Interfaces (APIs) for storing data in databases and other data management tools. The APIs may also be used to retrieve data from databases in various data management systems. The data management systems may provide access to the databases, pull data from the databases, retrieve data, and generate metrics. Metrics are tools for visualizing data. Metrics include time-series measurements and can be used for monitoring applications and generating status alerts.

[0130] The roll map generation system (100) can implement a plug-in architecture with an API for data collection to provide plug-and-play connectivity for the instrument (130) and additional instruments and testers. This allows resources from a specific process step and site to be easily transferred to other processes and sites, or new resources to be easily introduced to each process step and site.

[0131] The data network between elements of the roll map generation system (100) may include various types of communication channels, including unidirectional, bidirectional wired, and wireless communications. For example, the data network may include an industrial protocol network such as OPC, Modbus, ProfiNet, etc. The communication channel may be a dedicated conduit communication such as Universal Serial Bus (USB), IEEE 802 (Ethernet), IEEE 1394 (FireWire), or other high-speed data communication standards.

[0132] In some embodiments, the roll map generation system (100) may further include a manual input system that allows a worker to input manufacturing data. The roll map generation system (100) may also allow for a worker to input data using an input tool, or computer-based input of manufacturing data, such as scraping an Excel file.

[0133] According to some embodiments, the operations of the processor (133), the first controller (141), the second controller (143), and the servers (151-156) may be implemented as instructions stored on a machine-readable medium that can be read and executed by one or more processors. Here, the machine-readable medium may include any mechanism for storing and / or transmitting information in a form readable by a machine (e.g., a computing device). For example, the machine-readable medium may include a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk storage medium, an optical storage medium, a flash memory, an electrical, optical, acoustical, or other form of radio signal (e.g., a carrier wave, an infrared signal, a digital signal, etc.), and any other signal.

[0134] The processor (133), the first controller (141), the second controller (143), and the servers (151 to 156) may be configured with firmware, software, routines, and instructions for performing the operations described above or any of the processes described below. For example, the processor (133), the first controller (141), the second controller (143), and the servers (151 to 156) may be instantiated in memory.

[0135] The first and second controllers (141, 143) may be, for example, a Programmable Logic Controller (PLC). A PLC is a specialized type of microprocessor-based controller that uses programmable memory to store commands and implement functions such as logic, sequencing, timing, counting, and arithmetic to control machines and processes. PLCs are easy to operate and program.

[0136] The first and second controllers (141, 143) may include a power supply, a central processing unit (CPU), an input interface, an output interface, a communication interface, and first and second memory devices. The power supply may be configured to supply operating power to the CPU, the input module, the output module, the communication interface, and the first and second memory devices. The first memory device may be configured to store a system program of the PLC. The first memory device may be, for example, a read-only memory (ROM) and may be configured to permanently store data for an operating system of the second controller (143). The second memory device may be configured to store a user program and data. The user program may be a program set by a user to cause the CPU to perform a specific function. The data may include the aforementioned coordinate-related measurement data (CMD) and coordinate data (CD). The second memory device may be configured to further store status information of input and output devices, values ​​of timers, counters, and other internal devices. The second memory device may be, for example, a random access memory (RAM).

[0137] The CPU may be configured to implement logic and control communication between modules that convert input signals into output operation signals. The CPU may operate based on a system program stored in the first memory device. The CPU may be configured to manipulate data based on a user program stored in the memory device.

[0138] When the PLC is in operation, the CPU can be configured to scan current input conditions and data and store them in a memory device. The CPU can then be configured to read and execute the user program step by step, and then transmit the results to one of the output modules, communication modules, and memory devices.

[0139] The input and output modules perform isolation and signal conditioning, allowing sensors and actuators to be connected directly to the input and output modules without additional circuitry. The input and output modules can be configured to transfer data between the CPU and external devices.

[0140] Conditions and data of industrial devices and production processes can be transmitted to the CPU via an input module. The results processed by the CPU can be transmitted to an actuator via an output module. The input module may include, for example, digital and analog devices such as mechanical switches for position detection, proximity switches, photoelectric switches, encoders, temperature and pressure switches, potentiometers, linear variable differential transformers, strain gauges, thermistors, thermal transistors, and thermocouples with AC or DC. The input module may provide an interface between the input device and the CPU, which operates based on low DC voltage. Some input devices can generate analog signals with a high voltage range. The input module may be configured to convert the signals generated by the input device into voltages within a range acceptable to the CPU.

[0141] The output module may be configured to generate signals for controlling the operation of the actuator. The output module may include a relay, a transistor, and a triac. The output module may include a relay, a contactor, a solenoid valve, and a motor.

[0142] However, this is for convenience of explanation, and the operations of the processor (133), the first controller (141), the second controller (143), the server (151), the server (152), the server (153), the server (154), the server (155) and the server (156) described above may also be caused by other devices that execute computing devices, distributed computing devices, processors, firmware, software, routines and instructions, etc.

[0143] The architecture configured to generate a roll map and an intermediate roll map can be implemented by adding only a first controller (141) to the second controller (143) and servers (151 to 156), which are essential elements in a modern process management system. That is, the roll map generation system (100) according to exemplary embodiments can utilize the resources of an existing manufacturing site and reduce additional capital expenditure. In addition, by applying the same architecture as an existing manufacturing facility to a newly constructed manufacturing facility, the reliability of secondary battery manufacturing, the discovery / improvement of problematic processes, and the introduction of new processes can be improved.

[0144] A person skilled in the art will readily arrive at a roll map generation system including an integrated PLC performing the functions of each of the first controller (141) and the second controller (143) and a roll map generation system including an integrated server performing the functions of each of the servers (151 to 156), based on what is described herein.

[0145]

[0146] (Example 2)

[0147] FIG. 5 is a flowchart illustrating a roll map generation method according to exemplary embodiments.

[0148] Referring to FIGS. 1, 2, and 5, the measurement conditions of the processor (133) can be updated at P110. In this example, the measurement conditions of the processor (133) can be updated based on an electrode specification file (ESF). The update of the measurement conditions can include updating the number of maintenance lanes (L1, L2, L3), the number of unmaintained portions (U1, U2, U3, U4), the width of each of the maintenance lanes (L1, L2, L3), the width of each of the unmaintained portions (U1, U2, U3, U4), and the range of the normal measurement amount (i.e., loading amount or thickness).

[0149] An electrode specification file (ESF) may be generated based on electrode specification data (ESD). The server (155) may be configured to generate the electrode specification file (ESF) based on the electrode specification data (ESD) of the server (156). The electrode specification file (ESF) may have, for example, but is not limited to, a JSON file format. The electrode specification file (ESF) may be transmitted from the server (155) to the processor (133) via the server (152). The electrode specification file (ESF) may be transmitted to the processor (133) by a message transmission method such as unicast, for example.

[0150] Next, at P120, measurement data of the electrode sheet (ES) can be collected. The measurement data (MED) of the electrode sheet (ES) can be collected by the processor (133) based on the measurement signal (MS). The measurement signal (MS) can be generated by scanning the electrode sheet (ES) by the sensing unit (131) of the measuring device (130).

[0151] Next, the measurement data can be processed at P130. Processing the measurement data can include matching the measurement data with a plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) and calculating a representative value of the plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37). Measurement data can be processed by the processor (133), and coordinate-related measurement data (CMD) can be generated by processing the measurement data. The coordinate-related measurement data (CMD) can include representative values ​​of each of a plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) and representative coordinates (e.g., start coordinates and end coordinates) matching the representative values.

[0152] Furthermore, a person skilled in the art will readily be able to arrive at an embodiment in which the first controller (141) collects coordinate-related measurement data (CMD) based on what is described herein. In this case, the processor (133) may calculate a representative value for each of a plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) and transmit the representative values ​​to the first controller (141). The first controller (141) may be configured to match the representative values ​​of a plurality of sections (S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, S27, S31, S32, S33, S34, S35, S36, S37) with their representative coordinates (e.g., start coordinates and end coordinates).

[0153] Next, at P140, the number of the plurality of maintenance lanes (L1, L2, L3) recognized by the processor (133) and the process information can be compared. More specifically, the number of the plurality of maintenance lanes (L1, L2, L3) recognized by the processor (133) and the number of the plurality of maintenance lanes (L1, L2, L3) of the measurement conditions updated by the electrode specification file (ESF) can be compared. The above-described comparison can be performed by the processor (133). By the above-described comparison, the quality of the electrode sheet (ES) or the reliability of the measurement by the measuring device (130) can be improved.

[0154] When the number of the plurality of maintenance lanes (L1, L2, L3) recognized by the processor (133) matches the number of maintenance lanes of the process information, a roll map can be generated at P150. The roll map can be generated by the server (154). Generation of the roll map can include collecting coordinate-related measurement data (CMD) and additional coordinate-related measurement data and inspection data and storing them in a database within the server (154) or a database external to the server (154).

[0155] If the number of the plurality of maintenance lanes (L1, L2, L3) recognized by the processor (133) does not match the number of maintenance lanes of the process information, in P160, a representative value of the undifferentiated data of the measurement data (MED) can be set as a reference value. The third to fifth parts (POR3', POR4', POR5') of FIG. 4 are examples of undifferentiated data of the measurement data (MED).

[0156] Next, in P170, the representative value of the undifferentiated data can be corrected. The representative value of the undifferentiated data can be corrected based on adjacent representative values ​​as described above. For example, the representative value of the scanning area (S3) can be corrected based on the representative value of the scanning area (S2) adjacent to the scanning area (S3). As another example, the representative value of the scanning area (S3) can be corrected based on the representative value of the scanning area (S1) spaced apart from the scanning area (S3) with the scanning area (S2) interposed therebetween. As another example, the representative value of the scanning area (S3) can also be corrected based on the representative values ​​of two or more scanning areas (S1, S2). Accordingly, the representative value of the scanning area (S3) set as the reference value may be set as the representative value of the scanning area (S1), set as the representative value of the scanning area (S2), or set as the average of the representative values ​​of the scanning areas (S1, S2).

[0157]

[0158] (Example 3)

[0159] FIG. 6 is a drawing for explaining a roll map generation system (101) according to other exemplary embodiments.

[0160] Referring to FIG. 6, the roll map generation system (101) may include an unwinder (111), a rewinder (113), a processing mechanism (115), a first rotary encoder (121), a second rotary encoder (123), a measuring device (130), a first controller (141), a second controller (143), and servers (151, 153, 154, 155, 156).

[0161] The unwinder (111), the rewinder (113), the processing mechanism (115), the first rotary encoder (121), the second rotary encoder (123), the measuring device (130), the first controller (141), the second controller (143), and the servers (151, 153, 154, 155, 156) are substantially the same as those described with reference to FIGS. 1 to 4, and therefore, a duplicate description thereof will be omitted.

[0162] Referring to FIG. 6, in the roll map generation system (101), the measurement conditions of the processor (133) of the measuring device (130) can be updated based on electrode specification data (ESD). The electrode specification data (ESD) can be transmitted from the server (156) to the server (156) via the server (154), the server (151), the second controller (143), and the first controller (141).

[0163]

[0164] (Example 4)

[0165] FIG. 7 is a drawing for explaining a roll map generation system (102) according to other exemplary embodiments.

[0166] Referring to FIG. 7, the roll map generation system (102) may include an unwinder (111), a rewinder (113), a processing mechanism (115), a first rotary encoder (121), a second rotary encoder (123), a measuring device (130), a first controller (141), a second controller (143), and servers (151, 153, 154, 155, 156).

[0167] The unwinder (111), the rewinder (113), the processing mechanism (115), the first rotary encoder (121), the second rotary encoder (123), the measuring device (130), the first controller (141), the second controller (143), and the servers (151 to 156) are substantially the same as those described with reference to FIGS. 1 to 4, so a duplicate description thereof is omitted.

[0168] Referring to FIG. 7, the roll map generation system (102) may include a dedicated communication line between the server (156) and the processor (133). This is substantially the same as the roll map generation system (100) of FIG. 1. Accordingly, the electrode specification data (ESD) of the server (156) may be directly transmitted from the server (156) to the processor (133) via the dedicated communication line between the server (156) and the processor (133). The measurement conditions of the processor (133) of the measuring instrument (130) may be updated based on the electrode specification data (ESD) directly transmitted from the server (156).

[0169]

[0170] (Example 5)

[0171] FIG. 8 is a drawing for explaining a roll map generation system (102) according to other exemplary embodiments.

[0172] Referring to FIG. 8, the roll map generation system (103) may include an unwinder (111), a rewinder (113), a processing mechanism (115), a first rotary encoder (121), a second rotary encoder (123), a measuring device (130), a first controller (141), a second controller (143), a third controller (145), a processor (147), and communication servers (151 to 156).

[0173] The unwinder (111), the rewinder (113), the processing mechanism (115), the first rotary encoder (121), the second rotary encoder (123), the measuring device (130), the first controller (141), the second controller (143), and the servers (151 to 156) are substantially the same as those described with reference to FIG. 1, and therefore, a description thereof is omitted.

[0174] The third controller (145) may be, for example, a PLC. The third controller (145) may be configured to relay communication between the processor (133) and the processor (147). The third controller (145) may be configured to transmit data regarding processing, driving, and stopping of driving of the electrode sheet (ES) to the processor (133).

[0175] The processor (133) is substantially the same as in FIG. 1, but may not collect coordinate-related measurement data (CMD). The processor (133) may be configured to transmit measurement data (MED) collected based on the measurement signal (MS) to the third controller (145). In addition, the electrode specification file (ESF) may be transmitted to the processor (147) via the communication server (152), and the measurement conditions of the processor (147) may be updated based on the electrode specification file (ESF).

[0176] The processor (147) may be configured to receive measurement data (MED) and coordinate data (CD). The processor (147) may be configured to collect coordinate-related measurement data (CMD) based on the measurement data (MED) and coordinate data (CD). The collection of the coordinate-related measurement data (CMD) is substantially the same as that described with reference to FIGS. 1 to 5, except that it is collected by the processor (147), and therefore, a duplicate description thereof will be omitted.

[0177] 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.

Claims

1. A step of collecting measurement data including measurement values ​​of the electrode sheet based on a measurement signal generated by measurement of the electrode sheet, wherein the electrode sheet includes a plurality of maintenance lanes and a plurality of non-maintained lanes; and A method for generating a roll map, characterized in that it comprises a step of processing the measurement data so that the plurality of maintenance lanes are distinguished.

2. In paragraph 1, A method for generating a roll map, characterized in that, in the step of processing the above measurement data, the number of the plurality of maintenance lanes is determined.

3. In paragraph 2, A method for generating a roll map, characterized in that it further comprises a step of comparing the number of the plurality of maintenance lanes determined by processing the measurement data with the process information of the electrode sheet.

4. In paragraph 3, A method for generating a roll map, characterized in that it further comprises a step of setting a representative value of undifferentiated data of the measurement data as a reference value when the number of the plurality of maintenance lanes determined by processing the measurement data is different from the process information of the electrode sheet.

5. In paragraph 4, A method for generating a roll map, characterized in that the number of the plurality of maintenance lanes determined by processing the measurement data is less than the number of the plurality of maintenance lanes of the process information of the electrode sheet.

6. In paragraph 4, A method for generating a roll map, characterized in that it further includes a step of correcting a representative value of undifferentiated data of the above measurement data.

7. In paragraph 1, The electrode sheet includes a first section and a second section, The number of the plurality of maintenance lanes determined from the measurement data of the first section is the same as the process information of the electrode sheet, The number of the plurality of maintenance lanes determined from the measurement data of the second section is different from the process information of the electrode sheet, and A method for generating a roll map, characterized in that the representative value of the second section of the measurement data is corrected based on the representative value of the first section of the measurement data.

8. In paragraph 7, A method for generating a roll map, characterized in that the first section and the second section are adjacent.

9. In paragraph 1, The above electrode sheet includes first to third sections, The number of the plurality of maintenance lanes determined from the measurement data of the first and second sections is the same as the process information of the electrode sheet, The number of the plurality of maintenance lanes determined from the measurement data of the third section is different from the process information of the electrode sheet, and A method for generating a roll map, characterized in that the representative value of the third section of the measurement data is corrected based on the representative values ​​of the first and second sections of the measurement data.

10. In paragraph 9, A method for generating a roll map, characterized in that the representative value of the third section of the measurement data is set to an average of the representative values ​​of the first and second sections of the measurement data.

11. In paragraph 9, A method for generating a roll map, characterized in that the width of each of the plurality of maintenance lanes of the third section is determined based on the process information.

12. In paragraph 1, The above electrode sheet includes first to third sections, The number of the plurality of maintenance lanes determined from the measurement data of the first and second sections is the same as the process information of the electrode sheet, The number of the plurality of maintenance lanes determined from the measurement data of the third section is different from the process information of the electrode sheet, and A method for generating a roll map, characterized in that the representative value of the third section of the measurement data is corrected based on the representative value of the first section of the measurement data.

13. In paragraph 12, A method for generating a roll map, wherein the first section is spaced apart from the third section with the second section interposed therebetween.

14. In paragraph 12, A method for generating a roll map, characterized in that the representative value of the third section is set to the representative value of the first section.

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