Rolemap generation system and method for generating a rolemap

Abstract

According to an exemplary embodiment, a method for generating a roll map is provided, the method including the steps of transmitting process information of an electrode sheet to a processor, updating measurement conditions of the processor based on the process information, collecting measurement data including measurement values ​​based on measurement signals generated by measuring the electrode sheet, the electrode sheet including a plurality of ground lanes and a plurality of unground lanes, and processing the measurement data based on the measurement conditions updated based on the process information.

Description

[Technical Field]

[0001] The present invention relates to a system configured to generate a roll map representing a lot, which is a unit of wound electrode sheets, and a method for generating a roll map. This application claims the benefit of Korean Application No. 10-2023-0088071, filed on July 7, 2023, which is incorporated herein by reference in its entirety. [Background technology]

[0002] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries are widely used as energy sources for various wireless devices such as handsets, laptops, and wireless vacuum cleaners. In recent years, improvements in energy density and economies of scale have dramatically reduced the manufacturing cost per unit capacity of secondary batteries, and as the driving range of battery electric vehicles (BEVs) has increased to the same level as fuel-powered vehicles, the primary use of secondary batteries has shifted from mobile devices to mobility.

[0003] Secondary batteries are manufactured through an electrode process, an assembly process, and an activation process. Among these processes, the electrode process is the most crucial process for determining the yield and performance of the battery cell. The electrode process can include a coating process, a roll pressing process, and a slitting process. In the coating process, active materials and insulating materials can be applied to the surface of a current collector. In the roll pressing process, the electrode can be pressed by a pressure roll. The roll pressing process can determine the density, performance, and surface quality of the electrode. In the slitting process, the electrode can be cut into multiple electrodes to correspond to the design of the battery cell. Summary of the Invention [Problem to be solved by the invention]

[0004] The problem that the technical idea of ​​the present invention aims to solve is to provide a system configured to generate a roll map containing information about the quality and defects of an electrode manufacturing process. [Means for solving the problem]

[0005] According to an exemplary embodiment of the present invention for solving the above-mentioned problems, there is provided a method for generating a roll map, the method including the steps of transmitting process information of an electrode sheet to a processor, updating measurement conditions of the processor based on the process information, collecting measurement data including measurement values ​​based on measurement signals generated by measuring the electrode sheet, wherein the electrode sheet includes a plurality of ground lanes and a plurality of unground lanes, and processing the measurement data based on the measurement conditions updated based on the process information.

[0006] The measurement data includes a thickness value of the electrode sheet or a loading amount value of the electrode sheet.

[0007] The process information includes the number of the plurality of land lanes.

[0008] The processor is configured to process measurement data of the electrode sheet based on the process information.

[0009] The processing of the measurement data of the electrode sheet includes matching measurement values ​​of the measurement data to the plurality of coated lanes and the plurality of uncoated portions of the electrode sheet.

[0010] The processor is configured to distinguish between the plurality of ground lanes and the plurality of non-ground lanes based on a profile of the measurement data.

[0011] The method further includes comparing the number of the plurality of land lanes distinguished by the processor with the process information.

[0012] The method further includes the steps of matching coordinate data coordinates of each of the plurality of land lanes with the representative values ​​to collect coordinate-related measurement data including the representative values, generating a roll map based on the coordinate-related measurement data, and providing a visualized roll map based on the roll map.

[0013] Each of the representative values ​​is an average of the measurement values ​​of the measurement data for each of the multiple sections of the electrode sheet.

[0014] The visualized roll map includes a visualization area that displays coordinate-related measurement data of each of the plurality of land lanes separately from one another.

[0015] The visualized roll map includes a visualization region that differentiates and displays the quality of the plurality of land lanes.

[0016] The process information is transmitted to the processor as a JSON (JavaScript Object Notation) format file. [Effects of the Invention]

[0017] According to an exemplary embodiment of the present invention, a system can be provided for generating a roll map that allows feedback, feedforward, and tracking for electrode processes.

[0018] The effects that can be obtained from the exemplary embodiments of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood from the following description by a person having ordinary skill in the art to which the exemplary embodiments of the present disclosure belong. In other words, unintended effects accompanying the implementation of the exemplary embodiments of the present disclosure can also be derived from the exemplary embodiments of the present disclosure by a person having ordinary skill in the art. [Brief explanation of the drawings]

[0019] [Figure 1] 1 illustrates a role map generation system according to an exemplary embodiment. [Figure 2] FIG. 2 is a plan view showing a part of an electrode sheet. [Figure 3] 10 is a graph showing measurement data of an electrode sheet. [Figure 4] 1 shows a visualized role map. [Figure 5] 1 is a flowchart illustrating a role map generation method according to an exemplary embodiment. [Figure 6] 1 illustrates a role map generation system according to an exemplary embodiment. [Figure 7] 1 illustrates a role map generation system according to an exemplary embodiment. [Figure 8] 1 illustrates a role map generation system according to an exemplary embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before that, the terms and words used in the specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, based on the principle that an inventor can appropriately define the concepts of terms to best describe his own invention.

[0021] Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and there may be various equivalents and modifications that can replace them at the time of this application.

[0022] Furthermore, in the description of the present invention, if it is determined that a detailed description of related publicly known structures or functions may obscure the gist of the present invention, the detailed description will be omitted.

[0023] Since the embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or shown in a schematic manner for clearer explanation. Therefore, the sizes and proportions of each component do not completely reflect the actual sizes and proportions.

[0024] (First embodiment) FIG. 1 illustrates a role map generation system 100 according to an example embodiment.

[0025] FIG. 2 is a plan view showing a portion of the electrode sheet ES.

[0026] Fig. 3 is a graph showing measurement data collected from the electrode sheet ES. In Fig. 3, the vertical axis represents the measurement amount, and the horizontal axis represents time. In Fig. 3, the horizontal and vertical axes are expressed in arbitrary units.

[0027] Figure 4 shows a visualized role map VRM.

[0028] Referring to Figures 1 to 4, the roll map generation system 100 may include an unwinder 111, a rewinder 113, a processing instrument 115, a first rotary encoder 121, a second rotary encoder 123, a measuring instrument 130, a first controller 141, a second controller 143, communication servers 151, 153, servers 161, 163, 165, and a display device 170.

[0029] The roll map generation system 100 can be configured to generate a roll map including data related to the electrode sheet ES. The roll map can represent the electrode sheet ES based on coordinates indicating positions on the electrode sheet ES. Processes for manufacturing a secondary battery can be performed on the electrode sheet ES. The roll map represents a history of processes performed on the electrode sheet ES and can include data related to the coordinates. This allows the roll map to enable feedback, feedforwarding, and tracking of the secondary battery manufacturing process, as described below.

[0030] The first electrode roll ER1 on which the previous process has been performed may be loaded onto the unwinder 111. The unwinder 111 may be configured to unwind the electrode sheet ES from the first electrode roll ER1. The rewinder 113 may be configured to wind the electrode sheet ES to form the second electrode roll ER2. This allows the electrode sheet ES to move between the unwinder 111 and the rewinder 113. Since the electrode process is performed on the electrode sheet ES that is unwound from the first electrode roll ER1 and wound onto the second electrode roll ER2, the electrode process may be a roll-to-roll process.

[0031] The roll map may be generated on a lot-by-lot basis. The electrode sheet ES may be wound around the second electrode roll ER2 and cut and separated after reaching a predetermined winding length. A lot is a production unit in a roll-to-roll process, and the separated second electrode roll ER2 is an example of a lot. Accordingly, the server 161 may be configured to store a roll map of a previous process. The roll map of the previous process may correspond to the first electrode roll ER1. The server 161 may also be configured to generate and store a roll map of a current process. The roll map of the current process may correspond to the second electrode roll ER2.

[0032] The time series data constructed over time in the roll map (i.e., corresponding to the progress of the process) can be associated with coordinate data CD collected based on the amount of movement of the electrode sheet ES (i.e., either the amount of winding or the amount of unwinding).

[0033] The manufacturing of secondary batteries involves a series of different processes, and leading processes affect subsequent processes. However, if the time-series data of a leading process cannot be directly matched with the workpieces, semi-finished products, and finished products in the real world, it is difficult to reflect the time-series data of the leading process in the subsequent process. Hereinafter, the correction of a subsequent process based on data generated according to the results of a leading process is called feedforward.

[0034] Here, the term "worked product" refers to an article provided as a result of each process, such as the electrode sheet ES, which has undergone the coating process, roll pressing process, and slitting process shown in FIG. 1. The semi-finished product may refer to one of a separator, an electrode, or an assembly thereof, which has been cut by the notching process. The semi-finished product may also be a structure including a housing and an electrode assembly housed in the housing (in some cases, the structure may further include an electrolyte). The product refers to an article that has been processed to be operable as a secondary battery by the activation process. The above definitions of the work product, semi-finished product, and product relate to one aspect of the same and do not exclude the usual definitions thereof.

[0035] For feedforwarding, the time series data of the roll map must be associated with the positions of images of workpieces, parts, semi-finished products, and finished products in the real world. The roll map can associate the time series data with coordinate data, including coordinates indicating the positions of images of workpieces, parts, semi-finished products, and finished products in the real world. The roll map can match the time series data with the real-world workpieces, parts, semi-finished products, and finished products based on the coordinate data. This allows the generation of a roll map and feedforwarding based on the roll map to improve the productivity and quality of the secondary battery manufacturing process by quantifying and objectifying process aspects that previously relied on operator discretion. Furthermore, the roll map of a previous lot can also be used to improve the process of a subsequent lot; this operation can be called process feedback. Process feedback using the roll map can include identifying process conditions and process parameters that cause problems and defects based on the data contained in the roll map.

[0036] Furthermore, as described below, roll maps are cumulatively generated for workpieces, components, semi-finished products, and finished products of a unit process, thereby allowing tracking of the process history of shipped products (e.g., battery cells, battery modules, or battery packs). As an 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 the electrodes and separator included in the battery cell. In other words, the cell ID may be associated with the roll map of the electrodes and separator included in the battery cell. Thus, when an event such as a quality issue occurs in a battery cell that has already been shipped, historical data on the manufacture of the battery cell may be retrieved based on the cell ID to find the cause of the problem in the manufacturing process.

[0037] The electrode sheet ES may be processed by the processing tool 115. As one example, the processing tool 115 may include a coater, and electrode slurry may be coated onto the electrode sheet ES. As another example, the processing tool 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 tool 115 may include a splicing die and a scrap port, and portions of the electrode sheet ES may be scrapped. As another example, the processing tool may include a slitting knife, and the electrode sheet ES may be separated into multiple electrode sheets.

[0038] The coating process is a process of applying a coating material such as an electrode slurry onto the electrode sheet ES. The electrode slurry may include an electrode active material, a conductive material, a binder, and a solvent. The electrode slurry can be prepared by dissolving the electrode active material, the conductive material, the binder, and the like in a solvent.

[0039] The roll pressing process involves passing the electrode sheet ES coated with electrode slurry between pressure rolls facing each other. The pressure rolls flatten the electrode surface and increase the bonding strength between the active material and the current collector.

[0040] To increase the production volume (e.g., GWh) per line of a secondary battery production facility, a wide electrode sheet ES is subjected to a coating process and a roll pressing process, after which the wide electrode sheet ES can be cut according to the battery cell specifications in a subsequent slitting process.

[0041] The first rotary encoder 121 may be configured to sense the amount of electrode sheet ES unwound from the first electrode roll ER1 by the unwinder 111. Thus, the first rotary encoder 121 may be configured to generate a unwinding amount signal UWAS indicating the unwound amount of electrode sheet ES. The first rotary encoder 121 may be configured to transmit the unwinding amount signal UWAS to the first controller 141. The first controller 141 may be configured to collect unwinding amount data based on the unwinding amount signal UWAS of the electrode sheet ES.

[0042] The second rotary encoder 123 may be configured to sense the amount of electrode sheet ES wound onto the second electrode roll ER2 by the rewinder 113. Thus, the second rotary encoder 123 may be configured to generate a winding amount signal WAS indicating the wound 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.

[0043] Portions of the electrode sheet ES may be scrapped in some cases, which may cause the amount of electrode sheet ES unwound by the unwinder 111 to differ from the amount of electrode sheet ES taken up by the rewinder 113. Also, when the electrode sheet ES is stretched by pressure in the roll pressing process, the amount of electrode sheet ES unwound by the unwinder 111 may differ from the amount of electrode sheet ES taken up by the rewinder 113.

[0044] The first controller 141 may be configured to collect coordinate data CD of the electrode sheet ES based on one of the winding amount signal WAS and the unwinding amount signal UWAS of the electrode sheet ES. For example, the first controller 141 may determine the movement distance of the electrode sheet ES in the current process step based on the winding amount signal WAS of the electrode sheet ES. This may determine coordinates indicating the position within the electrode sheet ES of the portion of the electrode sheet ES that is wound by the rewinder 113 at each time point during roll-to-roll processing of the electrode sheet ES. Furthermore, by calibrating the coordinates using the offset distance OD, the relative positions within the electrode sheet ES of each portion of the electrode sheet ES being processed or sensed may be determined. Hereinafter, the technical concept of the present invention will be described focusing 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.

[0045] The coordinate data CD may include coordinates that are matched to each portion of the electrode sheet ES. That is, each arbitrary point on the electrode sheet ES may be matched with a coordinate. The coordinates may be one-dimensional quantities in the machine direction MD (or longitudinal direction) of the electrode sheet ES, but are not limited thereto. The coordinates may also be two-dimensional quantities in the machine direction and the transverse direction TD (or width direction) of the electrode sheet ES.

[0046] The sensing unit 131 of the measuring instrument may be configured to measure the electrode sheet ES to collect measurement data of the electrode sheet ES. The sensing unit 131 may measure the electrode sheet ES by a scanning method. The sensing unit 131 may be configured to scan the electrode sheet ES in the lateral direction TD. While the measuring instrument 130 scans in the lateral direction TD, the electrode sheet ES may be moved in the traveling direction MD by the unwinder 111 and the rewinder 113.

[0047] 2 indicate the relative movement of the sensing unit 131 of the measuring instrument 130 with respect to the electrode sheet ES. Arrow AR1 indicates the lateral TD scanning of the sensing unit 131 from one end of the electrode sheet ES to the other end, and arrow AR2 indicates the lateral TD scanning of the sensing unit 131 from the other end of the electrode sheet ES to one end.

[0048] Here, the ground lanes L1, L2, and L3 are portions of the electrode sheet ES that are coated with electrode slurry, and the uncoated portions U1, U2, U3, and U4 are portions of the electrode sheet ES that are not coated with electrode slurry. The uncoated portions U1, U2, U3, and U4 may be interposed between the ground lanes L1, L2, and L3, or may be located at both ends of the electrode sheet ES in the lateral direction TD.

[0049] The measurement data may include a plurality of measurement values ​​expressed in numerical values. For example, the measurement data may include dimensional data of the electrode sheet ES, such as thickness and width, data on the amount of coating material loaded on the electrode sheet ES, dimensional data such as the width of the insulating material provided on the coating material and the overlap width between the coating material and the insulating material, and data on mismatching between the land lanes L1, L2, and L3 on the upper surface of the electrode sheet ES and the land lanes L1, L2, and L3 on the lower surface of the electrode sheet ES. Here, the loading amount represents the amount of coating material loaded per unit area of ​​the electrode sheet ES and may be the areal density of the coating material.

[0050] The measuring instrument 130 may include a sensing unit 131 and a processor 133. The sensing unit 131 may be configured to sense a physical quantity of the 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, a time of flight (TOF) sensor, etc. 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 rays. The sensing unit 131 may also include analog and / or digital sensors such as biosensors, chemical sensors, composition sensors, current and / or power meters, air quality sensors, gas sensors, Hall effect sensors, brightness level sensors, and light sensors. The measuring instrument 130 may also include pressure sensors, temperature sensors, ultrasonic sensors, proximity sensors, door status sensors, motion tracking sensors, humidity sensors, visible light sensors, infrared sensors, cameras, etc.

[0051] The following description of the technical concept of the present invention focuses on an embodiment in which the measuring device 130 is one of a loading amount measuring device (e.g., a Thermofisher Scientific web gauge) and a thickness measuring device configured to measure the loading amount of a coating layer on the sheet material SM, as a non-limiting example. Based on what is described herein, a person skilled in the art can easily arrive at an embodiment in which the measuring device includes one of the sensors described above and is configured to sense one of the measurement quantities described above.

[0052] 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 and process events related to the quality of portions of the electrode sheet ES. 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 in the electrode sheet ES, data on portions of the electrode sheet ES that have been sampled, data on portions of the electrode sheet ES scheduled for scrapping, 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 the position of the electrode sheet ES, and defect data such as pinhole defects, crater defects, line defects, crack defects, side ring defects, Ireland defects, fold defects, wrinkle defects, poke defects, and dent defects. The reference points may 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 inspector may be any one of a color sensor, a seam sensor, a reference point sensor, and a vision machine.

[0053] The measurement data and test data described above may be time-series data. The measurement data and test data may be temporally ordered. Temporal ordering is a key characteristic of time-series data, which is arranging events in the order in which they occur and arrive for processing. That is, the measurement data and test data may be sorted based on the time at which the measurements and tests were performed, and the measurement data and test data may be associated with time. This allows each measurement value of the measurement data to be matched to a time, and each test value of the test data to be matched to a time.

[0054] As an example, the measurement data (e.g., data on the amount of loading on the electrode sheet ES or data on the thickness of the electrode sheet ES) may include a series of measurement values ​​(e.g., values ​​of the amount of loading on the electrode sheet ES or values ​​of the thickness of the electrode sheet ES) and time values ​​associated with the series of measurement values. The measurement values ​​and the time values ​​may be matched one-to-one, but are not limited to this. As another example, the defect data may include a value indicating a defect and a time value associated with the value indicating a defect. Here, indicating a defect means including information regarding at least one of the presence or absence of a defect and the type of defect.

[0055] The processor 133 may be configured to collect measurement data based on the measurement signal MS sensed by the sensing unit 131. The processor 133 may be connected to the sensing unit 131 via a wired or wireless connection. The processor 133 may be configured to calibrate the measurement data by adding an offset measurement amount to each of a plurality of measurement values ​​of the measurement data. Due to the progress of the process and aging of the equipment, the measurement values ​​of the measurement data may differ from the actual values. By calibrating the measurement values ​​of the measurement data based on the offset measurement amount, the processor 133 can improve the reliability of the roll map generation system 100 and the method for generating a roll map. The offset measurement amount may be determined based on known information about the equipment system by a method such as a sample test.

[0056] According to an exemplary embodiment, 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 163 (described below) via a communication server 153. 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 be any file format that allows text-based data storage, such as extensible markup language (XML), comma separated values ​​(CSV), Resource Description Framework (RDF), spreadsheet, Open Document Format (ODF), Portable Document Format (PDF), plain text file, and Hypertext Markup Language (HTML).

[0057] 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 EEPROM (Electrically Erasable Programmable Read-Only Memory), an SSD (Solid State Drive), and an HDD (Hard Disk Drive).

[0058] The electrode specification file ESF may include information about the process to be performed on the electrode sheet ES. More specifically, the electrode specification file ESF may include the number of ground lanes L1, L2, and L3, the number of unground lanes U1, U2, U3, and U4, the width of each of the ground lanes L1, L2, and L3, the width of each of the unground lanes U1, U2, U3, and U4, and the range of normal measurement amounts (i.e., loading amounts).

[0059] The processor 133 can be configured to update measurement conditions based on the electrode specification file ESF. The measurement conditions can include the number of ground lanes L1, L2, and L3 of the electrode sheet ES to be inspected, the number of uncovered portions U1, U2, U3, and U4, the width of each of the ground lanes L1, L2, and L3, the width of each of the uncovered portions U1, U2, U3, and U4, and the range of normal measurement amounts (i.e., loading amounts).

[0060] When the model of the battery cell to be manufactured is changed and the recipe for the electrode sheet ES is updated, the measurement conditions of the measuring instrument 130 must also be updated. For example, 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 associated therewith are changed.

[0061] For example, as shown in FIG. 2, processing of measurement data collected from an electrode sheet ES including three land lanes L1, L2, and L3 may differ from processing of measurement data collected from an electrode sheet including only a single land lane. To enable more precise secondary battery manufacturing processes and feedforward after the coating process, portions of the measurement data must be matched with the collection object to match the multiple land lanes L1, L2, and L3. Furthermore, matching portions of the measurement data with the multiple land lanes L1, L2, and L3 allows for the individual disposal of the multiple land lanes L1, L2, and L3 when defects occur, thereby improving the productivity and yield of secondary battery manufacturing.

[0062] To match a first portion of measurement data collected from land lane L1 with land lane L1, the first portion of measurement data must be identified as having been collected from land lane L1. To match a second portion of measurement data collected from land lane L2 with land lane L2, the second portion of measurement data must be identified as having been collected from land lane L2. To match a third portion of measurement data collected from land lane L3 with land lane L3, the third portion of measurement data must be identified as having been collected from land lane L3.

[0063] To match portions of the measurement data with the multiple land lanes L1, L2, and L3, the processor 133 may be configured to process the measurement data based on updated measurement conditions. By updating the measurement conditions, the processor 133 may be aware that the measurement data has been collected from multiple land lanes L1, L2, and L3, and thus the processor 133 may be configured to perform a calculation to recognize the object of the measurement data collection. Furthermore, if the number of land lanes set by the electrode specification data ESD or the electrode specification file ESF (i.e., the number of land lanes to be formed on the electrode sheet ES via the die coater) differs from the detected number of land lanes, the electrode sheet ES may be determined to be defective.

[0064] Conventionally, the electrode specification data ESD in the server 165, which includes the model ID and the model recipe, is not automatically updated to the measuring instrument 130, and the measurement conditions are updated manually by an operator. The manual update by the operator can induce incorrect specification of the measurement conditions, and the incorrect specification of the measurement conditions results in a large-scale error in judgment regarding the quality of the electrode sheet ES.

[0065] According to an exemplary embodiment, the server 163 may be configured to generate an electrode specification file ESF based on the electrode specification data ESD transmitted from the server 165. The electrode specification file ESF may be transmitted to the processor 133 via the communication server 153. Since the measurement conditions of the processor 133 are automatically updated based on the electrode specification file ESF, erroneous specification of the measurement conditions may be prevented and the reliability of the roll map may be improved.

[0066] The processor 133 can be configured to calculate the widths of multiple ground-covered lanes L1, L2, and L3 based on the measurement data. When a set number or more of consecutive measurement values ​​of the electrode sheet ES that are equal to or greater than the threshold value CP are found in the measurement data, the processor 133 can match the subsequent data points to the grounded areas. Similarly, when a set number or more consecutive measurement values ​​of the electrode sheet ES that are less than the threshold value CP are found in the measurement data, the processor 133 can match the subsequent measurement values ​​of the electrode sheet ES to the uncovered areas U1, U2, U3, and U4.

[0067] The processor 133 can be configured to compare the measurement data with the electrode specification file ESF. More specifically, the processor 133 can be configured to compare the number of landed lanes L1, L2, and L3, the number of uncovered portions U1, U2, U3, and U4, the widths of each of the landed lanes L1, L2, and L3, and the widths of each of the uncovered portions U1, U2, U3, and U4, determined based on the measurement data, with process information for the electrode sheet ES in the electrode specification file ESF. The processor 133 can be configured to determine defects in the electrode sheet ES based on the measurement data and the electrode specification file ESF.

[0068] The processor 133 may be configured to identify erroneous measurement data based on the measurement data and the electrode specification file ESF. Examples of erroneous measurement data may include incorrect recognition of the positions of uncoated and coated areas, failure to detect a measurement quantity (i.e., loading amount or thickness), etc. Generally, measurement of loading amount and thickness is performed by a thermodynamic method, and thermal phenomena induced by various aspects of the process may cause erroneous detection of loading amount and thickness.

[0069] The first controller 141 may be in operative communication with the first rotary encoder 121, the second rotary encoder 123, the measuring instrument 130, the additional measuring instruments, and the additional inspection instruments via a wired or wireless data network. The data network may be unidirectional or bidirectional. The data network may be embodied by a public network and / or a dedicated network using physical channels, Wi-Fi, Bluetooth, and / or other frequency bands. The first rotary encoder 121, the second rotary encoder 123, the measuring instrument 130, the additional measuring instruments, and the additional inspection instruments may be configured to collect data or generate signals to collect data from equipment, workpieces, workpieces, and products within the roll map generation system 100.

[0070] The first controller 141 may be configured to transmit the coordinate data CD to the processor 133. The processor 133 may be configured to associate the metrology data with the coordinate data CD to generate coordinate-related metrology data CMD. Generally, the metrology data may be processed based on trigger points.

[0071] As a non-limiting example, the trigger point for processing the measurement data may be the completion of a scan. For example, the sensing unit 131 may scan the electrode sheet ES in the width direction of the electrode sheet ES, and the measurement data may be stored, processed, modulated, and transmitted for each scan. In other examples, the trigger point may be the completion of multiple scans or the completion of a portion of a scan. Examples of processing the measurement data may include storing the measurement data, manipulating the measurement data (e.g., generating coordinate-related measurement data CMD), and transmitting the measurement data.

[0072] According to an exemplary embodiment, the measuring instrument 130 may be configured to calibrate the coordinate data CD based on the position of the sensing unit 131. More specifically, the measuring instrument 130 may be configured to associate coordinates of the coordinate data CD with measurement values ​​of the measurement data by calibrating the coordinate data CD based on the offset length OD.

[0073] The measuring instrument 130 can collect measurement data of the portion corresponding to (e.g., overlapping with) the sensing unit 131, and the coordinate data CD is collected by the second rotary encoder 123 spaced apart from the sensing unit 131 as described above, so the portion of the electrode sheet ES corresponding to the winding amount signal WAS generated at the same time and the portion of the electrode sheet ES corresponding to the measurement signal MS may be different.

[0074] According to an exemplary embodiment, the processor 133 may be configured to calibrate the coordinate data CD collected at the same time as the coordinate-related measurement data CMD is collected based on the offset length OD, and associate the calibrated coordinate data CD with a representative value of the measurement value of the measurement data. The measurement value of the measurement data may be matched with the time, and the measurement value of the coordinate-related measurement data CMD may be matched with the calibrated coordinate.

[0075] A plurality of guide rolls for defining the movement path of the electrode sheet ES may be interposed between the sensing unit 131 and the rewinder 113. Thus, the offset length OD may be defined as the length of the electrode sheet ES between the sensing unit 131 and the rewinder 113, corresponding to the movement path of the electrode sheet ES. The offset length OD may be the same as the linear distance between the sensing unit 131 and the rewinder 113, or may be longer than the linear distance between the sensing unit 131 and the rewinder 113.

[0076] The processor 133 may be configured to collect coordinate-related measurement data CMD based on the measurement data and the coordinate data CD. The electrode sheet ES may include multiple scanning areas S1 and S2. Each of the multiple scanning areas S1 and S2 is a portion of the electrode sheet ES that is inspected by a single scan of the sensing unit 131. The scanning area S1 may include multiple sections S11, S12, S13, S14, S15, S16, and S17. The scanning area S2 may include multiple sections S21, S22, S23, S24, S25, S26, and S27.

[0077] The coordinate-related measurement data CMD may include representative values ​​calculated from the measurement values ​​of each of multiple sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 of the electrode sheet ES. Each of the representative values ​​of the multiple sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 of the electrode sheet ES may include at least one of an average, a standard deviation, a median, a maximum value, and a minimum value.

[0078] The coordinate-related measurement data CMD may include representative coordinates (e.g., start and end coordinates) of each of a plurality of sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 of the electrode sheet ES. The representative values ​​of the coordinate-related measurement data CMD may be matched with the representative coordinates (e.g., start and end coordinates) of corresponding ones of the plurality of sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27.

[0079] Sections S11 and S21 may correspond to uncoated area U1. Sections S12 and S22 may correspond to landed lane L1. Sections S13 and S23 may correspond to uncoated area U2. Sections S14 and S24 may correspond to landed lane L2. Sections S15 and S25 may correspond to uncoated area U3. Sections S16 and S26 may correspond to landed lane L3. Sections S17 and S27 may correspond to uncoated area U4.

[0080] To calculate a representative value of the coordinate-related measurement data CMD, the processor 133 may be configured to match measurement values ​​of the measurement data. When a set number (e.g., five) or more consecutive measurement values ​​of the electrode sheet ES equal to or greater than the threshold value CP are found among the measurement values ​​of the measurement data, the processor 133 may be configured to match the subsequent data points with the ground lanes L1, L2, and L3. Similarly, when a set number or more consecutive measurement values ​​of the electrode sheet ES less than the threshold value CP are found among the measurement data, the processor 133 may be configured to match the subsequent measurement values ​​of the electrode sheet ES with the unground lanes U1, U2, U3, and U4.

[0081] For example, when scanning section S11, the measurement value of the electrode sheet ES may be below the threshold value CP, and the measurement data collected from section S11 can be determined to have been collected from the plain area U1 and can be matched with section S11.

[0082] After scanning section S11, when section S12 is scanned, the number of measurement values ​​of the electrode sheet ES that arrive consecutively and are above the threshold CP is greater than the set number, so the measurement data collected from section S12 can be determined to have been collected from the land lane L1 and can be matched with section S12.

[0083] After scanning section S12, when section S13 is scanned, the number of measurement values ​​of the electrode sheet ES that arrive consecutively and are less than the threshold value CP is greater than or equal to the set number, so the measurement data collected from section S13 can be determined to have been collected from the plain area U2 and can be matched with section S13.

[0084] After scanning section S13, when section S14 is scanned, the number of measurement values ​​of the electrode sheet ES that arrive consecutively and are above the threshold value CP is greater than the set number, so the measurement data collected from section S14 can be determined to have been collected from the land lane L2 and can be matched with section S14.

[0085] After scanning section S14, when section S15 is scanned, the number of consecutive measurement values ​​of the electrode sheet ES that are less than the threshold value CP is greater than or equal to the set number, so the measurement data collected from section S15 can be determined to have been collected from the plain area U3 and can be matched with section S15.

[0086] After scanning section S15, when section S16 is scanned, the number of measurement values ​​of the electrode sheet ES that arrive consecutively and are above the threshold value CP is greater than the set number, so the measurement data collected from section S16 can be determined to have been collected from the land lane L3 and can be matched with section S16.

[0087] After scanning section S16, when section S17 is scanned, the number of consecutive measurement values ​​of the electrode sheet ES that are less than the threshold value CP is greater than or equal to the set number, so the measurement data collected from section S17 can be determined to have been collected from the plain area U4 and can be matched with section S17.

[0088] The matching of the multiple sections S21, S22, S23, S24, S25, S26, and S27 of the scanning area S2 with the measurement data collected therefrom is substantially the same as that described for the multiple sections S11, S12, S13, S14, S15, S16, and S17 of the scanning area S1.

[0089] The processor 133 can be configured to match the measurement values ​​of the measurement data of the electrode sheet ES with the corresponding multiple sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27, and calculate a representative value of each measurement value of the portions of the measurement data matched to the multiple sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27.

[0090] The processor 133 may calculate the representative values ​​for each of the multiple sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 based on 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 ground lanes L1, L2, and L3, the number of uncovered portions U1, U2, U3, and U4, the width of each of the ground lanes L1, L2, and L3, the width of each of the uncovered portions U1, U2, U3, and U4, and the range of normal measurement amounts (i.e., loading amounts or thicknesses) in the electrode specification file ESF, and the processor 133 can process the measurement data to calculate representative values ​​for each of the multiple sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 based on the updated measurement conditions. This can improve the reliability of processing the measurement data of the electrode sheet ES.

[0091] The processor 133 can be configured to generate evaluation data based on the coordinate-related measurement data CMD. The evaluation data can include a process evaluation value for each of the multiple sections of the electrode sheet ES. The process evaluation value for each of the multiple sections of the electrode sheet ES can be determined based on a comparison between a set range and a measurement value (or a representative value of the measurement value).

[0092] For example, a representative value within a first range can be determined to be normal, a representative value within a second range that is even larger than the first range can be determined to be excessive, a representative value within a third range that is even larger than the second range can be determined to be very excessive, a representative value within a fourth range that is even smaller than the first range can be determined to be insufficient, and a representative value within a fifth range that is even smaller than the fourth range can be determined to be very insufficient.

[0093] Here, if the lower limit of the second range is equal to or greater than 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 equal to or less than the lower limit of the first range, the fourth range is smaller than the first range.

[0094] The processor 133 may be configured to transmit the 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 161 via the communication server 151. The second controller 143 and the communication server 151 may relay communication of data including the coordinate-related measurement data CMD between the server 161 and the first controller 141. However, this is not limited thereto. The first controller 141 may also transmit the coordinate-related measurement data CMD directly to the server 161.

[0095] The second controller 143 can be configured to control the operation of the unwinder 111, the rewinder 113, and the processing tool 115. The second controller 143 can be configured to generate signals for operating and interrupting the operation of the unwinder 111, the rewinder 113, and the processing tool 115. The signals for operating and interrupting the operation of the unwinder 111, the rewinder 113, and the processing tool 115 can be generated based on the electrode specification data ESD.

[0096] For process control, a communication line connecting the second controller 143 and the server 161 via the communication server 151 may be installed between the second controller 143 and the server 161. As a result, data transmission via the second controller 143 can save resources required for installing a communication line and improve the efficiency of data processing and management compared to a case in which the first rotary encoder 121, the second rotary encoder 123, and the measuring device 130 directly transmit the unwinding amount signal UWAS, the winding amount signal WAS, and the measurement signal MS to the server 161, or a case in which the first controller 141 directly transmits the coordinate-related measurement data CMD to the server 161.

[0097] The communication server 151 may include a program for communication between the second controller 143 of the manufacturing facility and the server 161. The communication server 151 may also be implemented in hardware, as described below. The language and protocol of the server 161 may be different from the language and protocol of the second controller 143. For example, the language of the server 161 may be SQL, and the language of the second controller 143 may be ladder diagram.

[0098] The communication server 151 may be configured to convert the electrode specification data ESD transmitted from the server 161 into a language of the second controller 143. The communication server 151 may also be configured to convert the coordinate-related measurement data CMD into a language of the server 161 and record the coordinate-related measurement data CMD in a database of the server 161.

[0099] The electrode specification data ESD may include a product ID and a recipe for identifying a product model to be manufactured using the electrode sheet ES. More specifically, the recipe of the electrode specification data ESD may include various items related to the process of the electrode sheet ES, such as the number of lots to be processed in the current process, the number of land lanes to be formed on the electrode sheet ES, process conditions including temperature, humidity, and pressure, and process parameters including the moving speed of the electrode sheet ES, the discharge amount of the coating die, and the pressure of the pressure roll.

[0100] The server 161 can be configured to generate a roll map. The roll map can be generated on a lot-by-lot basis. The roll map can include data related to lot specifications. The lot specifications can include, for example, the lot number, the length of the rolled electrode sheet ES, the width of the electrode sheet ES, and the materials and compositions used in processing the electrode sheet ES. The roll map can include the coordinate-related measurement data CMD described above. The roll map can further include inspection data that matches the coordinates of the coordinate data CD and additional measurement data that matches the coordinates of the coordinate data CD.

[0101] According to an exemplary embodiment, the server 161 may be a data processing system that supports various activities required to manage the production of secondary batteries, such as work schedule management, work instructions, quality control, and work performance aggregation. The server 161 may be, for example, MES (Manufacturing Execution System) software. The server 161 may be configured to input, process, output, and communicate data required for electrode production, such as coating processes, pressing processes, and manufacturing processes.

[0102] The server 161 may be configured to generate a visualization command VC for visualizing the role map. The server 161 may be configured to transmit the visualization command VC to the display device 170. The display device 170 may display the visualized role map VRM as shown in FIG. 3.

[0103] The visualized role map VRM may include multiple visualization regions VR1, VR2, VR3, VR4, and VR5. The multiple visualization regions VR1, VR2, VR3, VR4, and VR5 may be arranged in separate regions of the display device 170. The arrangement of the multiple visualization regions VR1, VR2, VR3, VR4, and VR5 in Figure 3 is for illustrative purposes only and does not limit the technical concept of the present invention in any way.

[0104] Visualization area VR1 shows the position and unwinding direction of unwinder 111. Visualization area VR2 shows the position and unwinding direction of rewinder 113. From visualization areas VR1 and VR2, the relative position of electrode sheet ES can be known. Visualization area VR1 can be adjacent to the start point of electrode sheet ES, and visualization area VR2 can be adjacent to the end point of electrode sheet ES.

[0105] The visualization area VR1 in FIG. 3 can show that the electrode sheet ES is unwound in a clockwise direction from the first electrode roll ER1, and the visualization area VR2 can show that the electrode sheet ES is wound up in a counterclockwise direction onto the first electrode roll ER1.

[0106] The visualization area VR3 represents the materials coated on the electrode sheet ES. In Figure 3, the third visualization area VR3 shows that the first upper slurry US1, the second upper slurry US2, and the upper insulating layer UI are sequentially coated on the upper surface of the electrode plate EP, and that the first lower slurry LS1, the second lower slurry LS2, and the lower insulating layer LI are sequentially coated on the lower surface of the electrode plate EP. The visualization area VR3 can further show the materials of the electrode plate EP, the first upper slurry US1, the second upper slurry US2, the upper insulating layer UI, the first lower slurry LS1, the second lower slurry LS2, and the lower insulating layer LI.

[0107] The visualization region VR4 may include a plurality of visualized lanes VUL1, VUL2, VUL3 that visualize the plurality of ground lanes L1, L2, L3 on the upper surface of the electrode sheet ES, and a plurality of visualized lanes VLL1, VLL2, VLL3 that visualize the plurality of ground lanes L1, L2, L3 on the lower surface of the electrode sheet ES. The visualization region VR4 may include visualized reference points VDP that represent reference points on the electrode sheet ES. The visualized reference points VDP may be spaced apart at set intervals (e.g., about 600 m).

[0108] The plurality of visualized lanes VUL1, VUL2, and VUL3 can represent the quality of the plurality of land lanes L1, L2, and L3 on the upper surface of the electrode sheet ES. In the plurality of visualized lanes VUL1, VUL2, and VUL3, the quality of the plurality of land lanes L1, L2, and L3 can be displayed in color. For example, portions of the plurality of visualized lanes VUL1, VUL2, and VUL3 that include defects and normal portions of the plurality of visualized lanes VUL1, VUL2, and VUL3 can be displayed in different colors.

[0109] The plurality of visualized lanes VLL1, VLL2, VLL3 can represent the quality of the plurality of land lanes L1, L2, L3 on the underside of the electrode sheet ES. In the plurality of visualized lanes VLL1, VLL2, VLL3, the quality of the plurality of land lanes L1, L2, L3 can be displayed in color. For example, portions of the plurality of visualized lanes VLL1, VLL2, VLL3 that include defects and normal portions of the plurality of visualized lanes VLL1, VLL2, VLL3 can be displayed in different colors.

[0110] The visualization area VR5 may include a scale indicating the coordinates of the visualized roll map VRM. The visualization area VR5 allows the approximate coordinates of each part of the electrode sheet ES to be known.

[0111] The visualization area VR6 may represent coordinate-related measurement data CMD collected from multiple land lanes L1, L2, and L3 on the upper and lower surfaces of the electrode sheet ES. That is, the visualization area VR6 may represent representative values ​​for each section of the multiple land lanes L1, L2, and L3 on the upper and lower surfaces of the electrode sheet ES. The representative values ​​of the multiple land lanes L1, L2, and L3 may be displayed distinctly. The representative values ​​of the multiple land lanes L1, L2, and L3 may be displayed with different symbols or different colors. The visualization area VR6 may include an index IDX for distinguishing the representative values ​​from the multiple land lanes L1, L2, and L3.

[0112] In this example, the representative values ​​of the coordinate-related measurement data CMD of the multiple land lanes L1, L2, and L3 in the visualization area VR6 are within the normal range, so the multiple land lanes L1, L2, and L3 in the visualization area VR3 are displayed in the same color, indicating that there are no defects in the electrode sheet ES.

[0113] The processor 133 may be configured to transmit the measurement data to the server 163. According to an exemplary embodiment, the role map generation system 100 may include an additional communication server for relaying the transmission of the measurement data between the processor 133 and the server 163.

[0114] The server 163 may be configured to store and process raw measurement data of the electrode sheets ES. The server 163 may be configured to manage the quality of the processing of the electrode sheets ES by continuously monitoring the processing of the electrode sheets ES based on the measurement data. According to an exemplary embodiment, the server 163 may be a statistical process controller (SPC). The server 163 may collect and analyze manufacturing data in near real time to identify problem conditions in a timely manner and provide an alarm to an operator before a potential problem occurs.

[0115] The server 165 may be a solution that manages all information and processes at every stage of a product or service lifecycle across a global supply chain. The server 165 may be, for example, a PLM (Product Lifecycle Management) system. The server 165 may be configured to store data such as items, parts, products, instructions, requirements, engineering change orders, quality, and workflows. The server 165 may be configured to generate and store electrode specification data ESD. The server 165 may be configured to transmit the electrode specification data ESD to the first server and the second server.

[0116] The processor 133, the first controller 141, the second controller 143, the communication server 151, the communication server 153, the server 161, the server 163, and the server 165 may be embodied in hardware, firmware, software, or a combination thereof. For example, the processor 133, the first controller 141, the second controller 143, the communication server 151, the communication server 153, the server 161, the server 163, and the server 165 may include computing devices such as a workstation computer, a desktop computer, a laptop computer, or a tablet computer. The processor 133, the first controller 141, the second controller 143, the communication server 151, the communication server 153, the server 161, the server 163, and the server 165 may include any one of a simple controller, a complex processor such as a microprocessor, a CPU, a GPU, a processor configured by software, dedicated hardware, and firmware. The processor 133, the first controller 141, the second controller 143, the communication server 151, the communication server 153, the server 161, the server 163 and the server 165 may be embodied 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).

[0117] Server 161 and server 163 can be configured to generate a roll map and an intermediate roll map. Because server 161 stores and processes much data related to general manufacturing control other than the roll map, the roll map stored on server 161 can include processed and simplified coordinate-related measurement data CMD instead of raw measurement data. Server 163 can be configured to store raw measurement data to operate as an SPC. Server 163 can transmit measurement data corresponding to selected portions of the roll map in response to a command from server 161.

[0118] The intermediate role map can further include measurement data related to the role map. That is, the intermediate role map can further include measurement data, which is original data, in addition to the role map. The measurement data can be associated with the role map based on time values. This allows the intermediate role map to provide additional insights into workpiece quality, process performance, OEE (Overall Equipment Effectiveness) drill-down, anomaly detection, traceability, preventative maintenance, and predictive alerts.

[0119] Server 161, server 163, and server 165 may include physical servers or cloud servers. Server 161, server 163, and server 165 may provide data and analysis results to workers through various frameworks. The frameworks may include protocols that support data transmission so that a display device can visualize data through a user interface and provide updated visualizations when new data is calculated by server 161 and server 163. The protocols that support the data transmission may use HTML, JavaScript, and / or JSON.

[0120] Server 161, server 163, and server 165 may include various APIs (Application Programming Interfaces) for storing data in databases and other data management tools. The APIs may also be used to retrieve data in the databases of the various data management systems. The data management systems may provide access to the databases, pull or retrieve data from the databases, and generate metrics, where metrics are tools for visualizing data. Metrics include measurements generated over time and may be used to monitor applications and generate status alerts.

[0121] The role map generation system 100 may implement a plug-in architecture along with an API for data acquisition to provide plug-and-play connectivity of the measuring instrument 130, additional measuring instruments, and additional test instruments, so that resources at a particular process step and at a particular site can be easily transferred to other processes and other sites, or new resources can be easily introduced at each process step and site.

[0122] The data network between elements of the role map generation system 100 can include various types of communication channels, including unidirectional, bidirectional wired, and wireless communication. By way of example, the data network can include industrial protocol networks such as OPC, Modbus, ProfiNet, etc. The communication channel can be a dedicated conduit communication such as Universal Serial Bus (USB), IEEE 802 (Ethernet), IEEE 1394 (FireWire), or other high-speed data communication standards.

[0123] In some embodiments, the roll map generation system 100 can further include a manual input system that allows an operator to input manufacturing data. The roll map generation system 100 can allow operator data entry using an input tool and computer-based input of manufacturing data, such as scraping an Excel file.

[0124] According to some embodiments, the operations of processor 133, first controller 141, second controller 143, communication server 151, communication server 153, server 161, server 163, and server 165 may be embodied as instructions stored on a machine-readable medium that can be read and executed by one or more processors. Here, a 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, a machine-readable medium may include read-only memory (ROM), random access memory (RAM), magnetic disk storage media, optical storage media, flash memory, electrical, optical, acoustic, or other forms of radio signals (e.g., carrier waves, infrared signals, digital signals, etc.), and any other signals.

[0125] The processor 133, the first controller 141, the second controller 143, the communication server 151, the communication server 153, the server 161, the server 163, and the server 165 may be configured with firmware, software, routines, and instructions to perform the operations described above or any of the steps described below. For example, the processor 133, the first controller 141, the second controller 143, the communication server 151, the communication server 153, the server 161, the server 163, and the server 165 may be instantiated in memory.

[0126] The first controller 141 and the second controller 143 may be, for example, a programmable logic controller (PLC). A PLC is a specialized form of microprocessor-based controller that uses programmable memory to store instructions and implements functions such as logic, sequencing, timing, counting, and arithmetic to control machines and processes. PLCs are easy to operate and program.

[0127] The first controller 141 and the second controller 143 may include a power supply, a central processing unit (CPU), an input interface, an output interface, a communication interface, a first memory device, and a second memory device. The power supply may be configured to supply operating power to the CPU, the input module, the output module, the communication interface, the first memory device, and the second memory device. The first memory device may be configured to store the PLC's system program. The first memory device may be, for example, a read-only memory (ROM) configured to permanently store data for the operating system of the second controller 143. The second memory device may be configured to store user programs and data. The user programs may be programs set by a user to cause the CPU to perform specific functions. The data may include the coordinate-related measurement data CMD and coordinate data CD described above. The second memory device may be configured to further store status information of the input and output devices, timers, counters, and other internal device values. The second memory device may be, for example, a random access memory (RAM).

[0128] The CPU may be configured to control communication between modules that embody logic and convert input signals into output operating signals. The CPU may operate based on a system program stored in a first memory device. The CPU may be configured to manipulate data based on a user program stored in a second memory device.

[0129] When the PLC operates, the CPU may be configured to scan current input conditions and data and store them in a memory device. The CPU may then be configured to load and execute a user program step by step, and then transmit the results to one of an output module, a communication module, and a memory device.

[0130] The input and output modules provide isolation and signal conditioning so that sensors and actuators can be directly coupled to the input and output modules without other circuitry. The input and output modules can be configured to communicate data between the CPU and external devices.

[0131] Conditions and data from industrial equipment and production processes can be transmitted to the CPU via input modules. Results processed by the CPU can be transmitted to actuators via output modules. Input modules can include digital and analog devices such as mechanical switches for position sensing, proximity switches, photoelectric switches, encoders, temperature and pressure switches, potentiometers, linear variable differential transformers, strain gauges, thermistors, thermal transistors, and AC or DC thermocouples. The input modules can provide an interface between the input devices and a CPU that operates on a low DC voltage. Some input devices can generate analog signals with a high voltage range. The input modules can be configured to convert the signals generated by the input devices to a voltage range acceptable to the CPU.

[0132] The output module can be configured to generate a signal to control the operation of the actuator, and can include a relay, a transistor, and a triac, and can include a relay, a contactor, a solenoid valve, a motor, and the like.

[0133] However, this is for convenience of explanation, and the operations of the above-described processor 133, first controller 141, second controller 143, communication server 151, communication server 153, server 161, server 163, and server 165 may also be caused by a computing device, a distributed computing device, a processor, firmware, software, routines, other devices executing instructions, etc.

[0134] The architecture configured to generate a roll map and an intermediate roll map can be implemented by adding only the first controller 141 to the second controller 143, the communication server 151, the server 161, the communication server 153, the server 163, and the server 165, which are essential elements of a modern process control system. In other words, the roll map generation system according to the exemplary embodiment can utilize resources already installed at the manufacturing site, thereby saving additional capital expenditures. Furthermore, by applying the same architecture as existing manufacturing facilities to newly constructed manufacturing facilities, it is possible to improve the reliability of secondary battery manufacturing, identify / improve problematic processes, and introduce new processes more efficiently.

[0135] Based on what is described herein, a person of ordinary skill in the art can easily arrive at a role map generation system including an integrated PLC that performs the functions of each of the first controller 141 and the second controller 143, and a role map generation system including an integrated server that performs the functions of each of the servers 161, 163, and 165.

[0136] (Second embodiment) FIG. 5 is a flowchart illustrating a role map generation method according to an exemplary embodiment.

[0137] 1, 2, 4, and 5, in P110, an electrode specification file ESF can be generated based on the electrode specification data ESD. The electrode specification file ESF can be generated by the server 163. The server 163 can be configured to generate the electrode specification file ESF based on the electrode specification data ESD of the server 165. The electrode specification file ESF can have, for example, but is not limited to, a JSON file format.

[0138] In P120, the electrode specification file ESF can be transmitted to the processor 133. The electrode specification file ESF can be transmitted from the server 163 to the processor 133 via the communication server 153. The electrode specification file ESF can be transmitted to the processor 133 by a message transmission method such as unicast.

[0139] Subsequently, in P130, the measurement conditions of the processor 133 can be updated based on the electrode specification file ESF. The update of the measurement conditions can include updating the number of land lanes L1, L2, and L3, the number of unlanded lanes U1, U2, U3, and U4, the width of each of the land lanes L1, L2, and L3, the width of each of the unlanded lanes U1, U2, U3, and U4, and the range of normal measurement amounts (i.e., loading amount or thickness).

[0140] Subsequently, in P140, measurement data of the electrode sheet ES can be collected. The measurement data 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 instrument 130.

[0141] The metrology data may then be processed at P150. Processing the metrology data may include matching portions of the metrology data with corresponding ones of a plurality of intervals S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27, and calculating representative values ​​for the plurality of intervals S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27. The metrology data may be processed by processor 133, and coordinate-related metrology data CMD may be generated by processing the metrology data. The coordinate-related measurement data CMD may include representative values ​​for each of multiple sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27, and representative coordinates (e.g., start coordinates and end coordinates) matched to the representative values.

[0142] Furthermore, based on what has been described herein, a person skilled in the art can easily arrive at an embodiment in which the first controller 141 collects coordinate-related measurement data CMD. In this case, the processor 133 can calculate a representative value for each of a plurality of sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27, and transmit the representative value to the first controller 141. The first controller 141 can be configured to match the representative values ​​of the plurality of sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 with their representative coordinates (e.g., start coordinates and end coordinates).

[0143] Next, in P160, the number of the plurality of ground lanes L1, L2, L3 recognized by the processor 133 can be compared with the process information. More specifically, the number of the plurality of ground lanes L1, L2, L3 recognized by the processor 133 can be compared with the number of the plurality of ground lanes L1, L2, L3 in the measurement conditions updated by the electrode specification file ESF. The above comparison can be performed by the processor 133. The above comparison can improve the quality of the electrode sheet ES or the reliability of the measurement by the measuring instrument 130.

[0144] Subsequently, in P170, a roll map can be generated. The roll map can be generated by the server 161. Generating the roll map can include collecting and storing the coordinate-related measurement data CMD, the additional coordinate-related measurement data, and the additional coordinate-related inspection data in a database within the server 161 or in a database external to the server 161.

[0145] Subsequently, at P180, the visualized role map VRM can be provided. Providing the visualized role map VRM can include generating visualization instructions VC, transmitting the visualization instructions VC to display device 170, and displaying the visualized role map VRM.

[0146] The visualized roll map VRM may include a visualization area VR1 showing the position and unwinding direction of the unwinder 111, a visualization area VR2 showing the position and unwinding direction of the rewinder 113, a visualization area VR3 showing the coating material of the electrode sheet ES, a visualization area VR4 showing the quality (i.e., presence or absence of defects) of the multiple ground lanes L1, L2, L3 of the electrode sheet ES, a visualization area VR5 including a scale representing the coordinates of the visualized roll map VRM, and a visualization area VR6 showing the coordinate-related measurement data CMD of the multiple ground lanes L1, L2, L3 of the electrode sheet ES.

[0147] (Third embodiment) FIG. 6 is a diagram illustrating a role map generation system 101 according to another exemplary embodiment.

[0148] Referring to FIG. 6, the roll map generation system 101 may include an unwinder 111, a rewinder 113, a processing instrument 115, a first rotary encoder 121, a second rotary encoder 123, a measuring instrument 130, a first controller 141, a second controller 143, a communication server 151, servers 161, 165, and a display device 170.

[0149] 6, the roll map generation system 101 is substantially the same as the roll map generation system 100 of FIG. 1, except that the communication server 153 and the server 163 are omitted. As a result, the measurement conditions of the processor 133 of the measuring device 130 can be updated based on the electrode specification data ESD of the server 165 transmitted via the server 161, the communication server 151, the second controller 143, and the first controller 141.

[0150] (Fourth embodiment) FIG. 7 is a diagram illustrating a role map generation system 102 according to another exemplary embodiment.

[0151] Referring to FIG. 7, the roll map generation system 102 may include an unwinder 111, a rewinder 113, a processing instrument 115, a first rotary encoder 121, a second rotary encoder 123, a measuring instrument 130, a first controller 141, a second controller 143, a communication server 151, servers 161, 165, and a display device 170.

[0152] 7, roll map generation system 102 is substantially the same as roll map generation system 100 of FIG. 1, except that communication server 153 and server 163 are omitted and a dedicated communication line between server 165 and processor 133 is included. As a result, electrode specification data ESD of server 165 can be directly transmitted from server 165 to processor 133 via the dedicated communication line between server 165 and processor 133. Measurement conditions of processor 133 of measuring instrument 130 can be updated based on electrode specification data ESD transmitted directly from server 165.

[0153] (Fifth embodiment) FIG. 8 is a diagram illustrating a role map generation system 103 according to another exemplary embodiment.

[0154] Referring to FIG. 8, the roll map generation system 103 may include an unwinder 111, a rewinder 113, a processing instrument 115, a first rotary encoder 121, a second rotary encoder 123, a measuring instrument 130, a first controller 141, a second controller 143, a third controller 145, a processor 147, communication servers 151, 153, servers 161, 163, 165, and a display device 170.

[0155] The unwinder 111, the rewinder 113, the processing instrument 115, the first rotary encoder 121, the second rotary encoder 123, the measuring instrument 130, the first controller 141, the second controller 143, the communication servers 151, 153, and the servers 161, 163, 165 are substantially the same as those described with reference to FIG. 1, and therefore, description thereof will be omitted.

[0156] 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 the processing, running, and interruption of running of the electrode sheet ES to the processor 133.

[0157] The processor 133 is substantially the same as that shown in FIG. 1 and 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, and the measurement data MED may be transmitted to the processor 147 via the third controller 145. The measurement data MED may be collected based on the measurement signal MS as described above with reference to FIGS. 1 to 4 and may be time-aligned time-series data. In addition, the electrode specification file ESF may be transmitted to the processor 147 via the communication server 153, and the measurement conditions of the processor 147 may be updated based on the electrode specification file ESF.

[0158] The processor 147 may be configured to receive the measurement data MED and the coordinate data CD. The processor 147 may be configured to collect coordinate-related measurement data CMD based on the measurement data MED and the coordinate data CD. The collection of the coordinate-related measurement data CMD is substantially the same as that described with reference to FIG. 1 except that it is collected by the processor 147, so a redundant description thereof will be omitted.

[0159] The present invention has been described in more detail above through the drawings and embodiments, etc. However, the configurations described in the drawings or embodiments in this specification are merely one embodiment of the present invention and do not represent all of the technical ideas of the present invention, and therefore, there may be various equivalents and modifications that can replace them at the time of filing this application. [Explanation of symbols]

[0160] 100 Role Map Generation System 101 Role Map Generation System 102 Role Map Generation System 103 Role Map Generation System 111 Unwinder 113 Rewinder 115 Processing equipment 121 1st rotary encoder 123 Second rotary encoder 130 Measuring Instruments 131 Sensing unit 133 processors 141 First Controller 143 Second Controller 145 Third Controller 147 processors 151 Communication Server 153 Communication Server 161 servers 163 servers 165 servers 170 Display device

Claims

1. transmitting electrode sheet process information to a processor; updating the measurement conditions of the processor based on the process information; collecting measurement data including measurement values ​​based on measurement signals generated by measuring the electrode sheet, the electrode sheet including a plurality of ground lanes and a plurality of unground lanes; and and processing the metrology data based on the metrology conditions updated based on the process information.

2. The method for generating a roll map according to claim 1 , wherein the measurement data includes a thickness value of the electrode sheet or a loading amount value of the electrode sheet.

3. The method of generating a roll map of claim 1 , wherein the process information includes a number of the plurality of land lanes.

4. The method of generating a roll map of claim 1 , wherein the processor is configured to process the measurement data of the electrode sheet based on the process information.

5. A method for generating a roll map according to any one of claims 1 to 4, wherein processing the measurement data of the electrode sheet matches measurement values ​​of the measurement data to a plurality of the grounded lanes and a plurality of the ungrounded areas of the electrode sheet.

6. The method of generating a roll map of claim 1 , wherein the processor is configured to distinguish between a plurality of the ground lanes and a plurality of the non-ground lanes based on a profile of the measurement data.

7. 7. The method of generating a roll map of claim 6, further comprising the step of comparing the number of land lanes distinguished by the processor with the process information.

8. matching coordinate data coordinates of each of a plurality of said land lanes with said representative values ​​so as to collect coordinate-related measurement data including said representative values; generating a roll map based on the coordinate-related measurement data; The method of claim 1 , further comprising the step of: providing a visualized role map based on the role map.

9. The method for generating a roll map according to claim 8 , wherein each of the representative values ​​is an average of the measurement values ​​of the measurement data for each of a plurality of sections of the electrode sheet.

10. The method of generating a roll map of claim 8 , wherein the visualized roll map includes a visualization area that displays the coordinate-related measurement data for each of the plurality of ground lanes separately from one another.

11. The method of generating a roll map of claim 9 , wherein the visualized roll map includes a visualization region that differentiates and displays the quality of a plurality of the ground lanes.

12. The method for generating a role map according to claim 1 , wherein the process information is transmitted to the processor as a JSON format file.

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