Roll image generation system and roll image generation method

Abstract

According to an exemplary embodiment, a method for generating a roll graph is provided. The method comprises the following steps: transmitting process information of an electrode slice to a processor; updating a measurement condition of the processor based on the process information; and collecting measurement data including a measurement value based on a measurement signal generated by measuring an electrode sheet, where the electrode sheet includes a plurality of coated portion bands and a plurality of uncoated portions; and processing the measurement data based on the measurement conditions updated according to the process information.

Description

Technical Field

[0001] The present invention relates to a system configured to generate a roll map indicating a batch of wound electrode sheets and a roll map generation method. This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0088071 filed on July 7, 2023, and the entire contents of the Korean Patent Application are incorporated herein by reference. Background Art

[0002] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries have been widely used as energy sources for various types of wireless devices (such as mobile phones, laptops, and cordless vacuum cleaners). Recently, the main use of secondary batteries has shifted from mobile devices to mobility, because the manufacturing cost per unit capacity of secondary batteries has been significantly reduced due to improved energy density and economies of scale, and the cruising range of battery electric vehicles (BEVs) has increased to the same level as fuel vehicles.

[0003] Secondary batteries are manufactured through electrode processes, assembly processes, and activation processes. Among these processes, the electrode process is a key process that determines the yield and performance of the battery cell. The electrode process may include a coating process, a rolling process, and a slitting process. In the coating process, active materials and insulating materials may be applied to the surface of the current collector. In the rolling process, the electrode may be pressed by a pressure roller. In the rolling process, the density, performance, and surface quality of the electrode may be determined. In the slitting process, the electrode may be cut into multiple electrodes according to the design of the battery cell. Summary of the invention

[0004] Technical issues

[0005] The present invention is directed to providing a system configured to generate a reel map including information about quality and defects in an electrode manufacturing process.

[0006] Technical Solution

[0007] An example embodiment of the present invention provides a roll map generation method. The roll map generation method includes: transmitting process information of an electrode sheet to a processor; updating a measurement condition of the processor based on the process information; collecting measurement data based on a measurement signal generated by measuring the electrode sheet, wherein the measurement data includes a measurement value, and the electrode sheet includes a plurality of coated bands and a plurality of uncoated portions; and processing the measurement data based on the measurement condition updated according to the process information.

[0008] The measurement data may include a thickness value of the electrode sheet or a loading value of the electrode sheet.

[0009] The process information may include the number of multiple coated strips.

[0010] The processor may be configured to process the measurement data of the electrode sheet based on the process information.

[0011] The processing of the measurement data of the electrode sheet may include matching the measured values ​​of the measurement data with the plurality of coated bands and the plurality of uncoated portions of the electrode sheet.

[0012] The processor may be configured to distinguish between the plurality of coated bands and the plurality of uncoated portions based on a distribution of the measurement data.

[0013] The roll map generation method may further include comparing the number of the plurality of coated bands distinguished by the processor with the process information.

[0014] The roll map generation method may further include: matching the coordinates of the coordinate data of each of the plurality of coated tapes with a representative value to collect the coordinate-related measurement data including the representative value; generating a roll map based on the coordinate-related measurement data; and providing a visualized roll map based on the roll map.

[0015] Each representative value may be an average value of measurement values ​​of the measurement data of each of a plurality of sections of the electrode sheet.

[0016] The visualized roll map may include a visualization area that displays coordinate-related measurement data for each of the plurality of coated strips distinguishably from one another.

[0017] The visualized roll map may include a visualization area that displays the qualities of the plurality of coated tapes distinguishably from one another.

[0018] The process information may be transmitted to the processor in a JavaScript Object Notation (JSON) format file.

[0019] Beneficial Effects

[0020] According to an example embodiment of the present invention, a system for generating a roll map that enables feedback, feedforward, and tracking of an electrode process may be provided.

[0021] The effects that can be achieved from the exemplary embodiments of the present invention are not limited to the above effects, and other effects not described herein will be clearly derived and understood from the following description by those of ordinary skill in the art to which the exemplary embodiments of the present invention belong. That is, those of ordinary skill in the art can derive from the exemplary embodiments of the present invention the unexpected effects that are achieved when implementing the exemplary embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A volume map generation system according to an example implementation is shown.

[0023] Figure 2 It is a plan view of a portion of an electrode sheet.

[0024] Figure 3 is a graph showing measurement data of the electrode sheet.

[0025] Figure 4 A visualized volume graph is shown.

[0026] Figure 5 is a flow chart of a volume map generation method according to an example implementation.

[0027] Figure 6 A volume map generation system according to an example implementation is shown.

[0028] Figure 7 A volume map generation system according to an example implementation is shown.

[0029] Figure 8 A volume map generation system according to an example implementation is shown. DETAILED DESCRIPTION

[0030] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Before describing the embodiments of the present invention, the terms or expressions used in the present specification and claims should not be interpreted as limited to those generally understood or defined in commonly used dictionaries, and should be understood based on the meaning and concept corresponding to the present invention, based on the inventor of the present application can appropriately define the terms or expressions to best explain the principle of the present invention.

[0031] Therefore, the embodiments described herein and the configurations shown in the drawings are merely examples of the present invention and do not reflect all technical ideas of the present invention, and it should be understood that various equivalents and modifications of alternative configurations will be made on the filing date of the present application.

[0032] When it is determined that well-known configurations or functions related to describing the present invention would obscure the subject matter of the present invention due to unnecessary detail, they are not described in detail.

[0033] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes, sizes, etc. of the components shown in the drawings may be exaggerated, omitted, or schematically illustrated for clarity. Therefore, the sizes or ratios of the components should not be understood as fully reflecting their actual sizes or ratios.

[0034] (First Embodiment)

[0035] Figure 1 A volume map generation system 100 is shown according to an example implementation.

[0036] Figure 2 is a plan view of a portion of the electrode sheet ES.

[0037] Figure 3 is a graph showing measurement data collected from the electrode sheet ES. Figure 3 In , the vertical axis represents the measurement quantity and the horizontal axis represents time. Figure 3 , the horizontal and vertical axes are expressed in arbitrary units.

[0038] Figure 4 A visual volume map VRM is shown.

[0039] refer to Figures 1 to 4 The roll image generation system 100 may include an unwinder 111, a rewinder 113, a processing device 115, a first rotary encoder 121, a second rotary encoder 123, a measuring device 130, a first controller 141, a second controller 143, communication servers 151 and 153, servers 161, 163 and 165, and a display device 170.

[0040] The roll map generation system 100 can be configured to generate a roll map including data about the electrode sheet ES. The roll map can represent the electrode sheet ES based on coordinates indicating positions on the electrode sheet ES. A secondary battery manufacturing process can be performed on the electrode sheet ES. The roll map represents a process history performed on the electrode sheet ES and includes data related to the coordinates. Therefore, the roll map enables feedback, feedforward, and tracking of the secondary battery manufacturing process, as described below.

[0041] The first electrode roll ER1 on which the previous process is performed may be loaded into 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 rewind the electrode sheet ES to form the second electrode roll ER2. Thus, the electrode sheet ES may be moved between the unwinder 111 and the rewinder 113. The electrode process is performed on the electrode sheet ES unwound from the first electrode roll ER1 and wound into the second electrode roll ER2, and thus may be a roll-to-roll process.

[0042] The roll diagram can be generated in batches. The electrode sheet ES can be wound into a second electrode roll ER2 and cut and separated after reaching a certain winding length. The batch is a production unit of the roll-to-roll process, and the separated second electrode roll ER2 is an example of a batch. Therefore, the server 161 can be configured to store the roll diagram of the previous process. The roll diagram of the previous process can correspond to the first electrode roll ER1. In addition, the server 161 can be configured to generate and store the roll diagram of the current process. The roll diagram of the current process can correspond to the second electrode roll ER2.

[0043] In the roll graph, time series data constructed over time (ie, according to the progress of the process) may be correlated with coordinate data CD collected based on the moving amount (ie, the winding amount or the unwinding amount) of the electrode sheet ES.

[0044] The manufacture of secondary batteries involves a series of different processes, and the front-end process affects the subsequent process. In this case, when the time series data of the front-end process does not directly match the workpiece, intermediate product, and real-world product, it is difficult to reflect the time series data of the front-end process in the subsequent process. In the following, correcting the subsequent process based on the data generated according to the results of the front-end process will be referred to as feedforward.

[0045] Here, the workpiece is a product provided as a result of each process, for example, a coating process, a rolling process, and a slitting process are performed thereon. Figure 1 The intermediate product may be one of a diaphragm, an electrode and an assembly thereof cut by a slotting process. The intermediate product may be a structure including a housing and an electrode assembly included in the housing (in some cases, the structure also includes an electrolyte). The product is a product that is processed by an activation process to be operable as a secondary battery. The above definitions of workpieces, intermediate products and products are only definitions in one aspect thereof and should not be understood as excluding their general definitions.

[0046] For feedforward, the time series data of the roll map should be related to the location on the workpiece, component, intermediate product, and real-world product. The roll map can allow the time series data to be related to coordinate data, which includes the coordinates of the location on the workpiece, component, intermediate product, and real-world product. The roll map can provide a match between the time series data and the workpiece, component, intermediate product, and real-world product based on the coordinate data. Therefore, the generation of the roll map and the feedforward based on the roll map can improve the productivity and quality of the secondary battery manufacturing process by digitizing and materializing various aspects of the process that depend on the judgment of the operator. The roll map of the previous batch can be used to improve the process of the subsequent batch, and 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 included in the roll map.

[0047] In addition, as described below, roll graphs can be cumulatively generated for workpieces, intermediate products, and products of unit processes to track the process history of products on the market (e.g., battery cells, battery modules, or battery packs). For example, a battery cell may include a cell identifier (ID) on an electrode assembly or a housing. The cell ID may include batch numbers and coordinate information of electrodes and diaphragms included in the battery cell. In other words, the cell ID may be associated with a roll graph of electrodes and diaphragms included in the battery cell. Therefore, when an event such as a quality problem occurs in a battery cell that has been shipped, historical data on the manufacture of the battery cell can be retrieved based on the cell ID to identify the cause of the problem in the manufacture of the battery cell.

[0048] The electrode sheet ES may be processed by the processing device 115. For example, the processing device 115 may include a coater, and the electrode sheet ES may be coated with an electrode slurry. As another example, the processing device 115 may include a pressing roller, and a rolling 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 mold and a waste port, and a portion of the electrode sheet ES may be discarded. As another example, the processing device 115 may include a slitting knife, and the electrode sheet ES may be divided into a plurality of electrode sheets.

[0049] The coating process is a process of applying a coating material (such as an electrode slurry) to the electrode sheet ES. The electrode slurry may include an electrode active material, a conductive agent, a binder, and a solvent. The electrode slurry may be provided by dissolving the electrode active material, the conductive additive, the binder, etc. in a solvent.

[0050] The rolling process is a process of passing the electrode sheet ES coated with the electrode slurry between pressing rollers facing each other. By using the pressing rollers, the surface of the electrode can be flattened and the bonding force between the active material and the current collector can be increased.

[0051] The coating process and the rolling process are performed on the electrode sheet ES having a wide width to increase the output (eg, GWh) of each production line of the secondary battery production equipment. Thereafter, in the slitting process, the electrode sheet having a wide width can be cut according to the specifications of the battery cell.

[0052] The first rotary encoder 121 may be configured to sense the amount of the electrode sheet ES unwound from the first electrode roll ER1 by the unwinder 111. Therefore, the first rotary encoder 121 may be configured to generate an unwinding amount signal UWAS indicating the amount of the unwound 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.

[0053] The second rotary encoder 123 may be configured to sense the amount of the electrode sheet ES wound into 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 amount of the wound electrode sheet ES. The second rotary encoder 121 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.

[0054] In some cases, a portion of the electrode sheet ES may be scratched, and thus the amount of the electrode sheet ES unwound 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 due to pressure in the rolling process, the amount of the electrode sheet ES unwound by the unwinder 111 may be different from the amount of the electrode sheet ES wound by the rewinder 113.

[0055] The first controller 141 can collect the 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 can determine the moving distance of the electrode sheet ES in the current process step based on the winding amount signal WAS of the electrode sheet ES. Thus, when a roll-to-roll process is performed on the electrode sheet ES, the coordinates indicating the position of a portion of the electrode sheet ES wound by the rewinder 113 on the electrode sheet ES can be determined at each time point. In addition, by calibrating the coordinates using the offset length OD, the relative position of each processed or sensed portion of the electrode sheet ES on the electrode sheet ES can be identified. Hereinafter, the technical concept of the present invention will be described with respect to an embodiment in which the first controller 141 collects the coordinate data CD based on the winding amount signal WAS of the electrode sheet ES.

[0056] The coordinate data CD may include coordinates matched to each part of the electrode sheet ES. That is, any point on the electrode sheet ES may be matched to the coordinates. The coordinates may be one-dimensional (1D) quantities of the electrode sheet ES in the machine direction MD (or longitudinal direction), but are not limited thereto. The coordinates may be two-dimensional (2D) quantities in the machine direction MD and the transverse direction TD (or width direction) of the electrode sheet ES.

[0057] The sensing part 131 of the measuring device 130 may be configured to measure the electrode sheet ES to collect measurement data of the electrode sheet ES. The sensing part 131 may measure the electrode sheet ES by a scanning method. The sensing part 131 may be configured to scan the electrode sheet ES in the transverse direction TD. When the measuring device 130 performs scanning in the transverse direction TD, the electrode sheet ES may be moved in the machine direction MD by the unwinder 111 and the rewinder 113.

[0058] exist Figure 2 , arrows AR1 and AR2 indicate relative movement of the sensing portion 131 of the measuring device 130 with respect to the electrode sheet ES. Arrow AR1 indicates scanning performed by the sensing portion 131 from a first edge of the electrode sheet ES to a second edge of the electrode sheet ES in the transverse direction TD, and arrow AR2 indicates scanning performed by the sensing portion 131 from the second edge of the electrode sheet ES to the first edge of the electrode sheet ES in the transverse direction TD.

[0059] Here, the coated strips L1, L2 and L3 are portions of the electrode sheet ES coated with the electrode slurry, and the uncoated portions U1, U2, U3 and U4 are portions of the electrode sheet ES not coated with the electrode slurry. The uncoated portions U1, U2, U3 and U4 may be interposed between the coated strips L1, L2 and L3, or located at opposite ends of the electrode sheet ES in the transverse direction TD.

[0060] The measurement data may include multiple measurement values ​​represented by numbers. For example, the measurement data may include the size data (e.g., thickness and width) of the electrode sheet ES, the data of the loading amount of the coating material on the electrode sheet ES, the size data (e.g., the width of the insulating material on the coating material and the overlapping width between the coating material and the insulating material), the mismatch data between the coating tapes L1, L2 and L3 on the upper surface of the electrode sheet ES and the coating tapes L1, L2 and L3 on the lower surface of the electrode sheet E, etc. Here, the loading amount is the amount of the coating material loaded per unit area of ​​the electrode sheet ES, and may be the area density of the coating material.

[0061] The measuring device 130 may include a sensing unit 131 and a processor 133. The sensing unit 131 may be configured to sense the physical quantity of the electrode sheet ES to generate a measurement signal MS. 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 include a transmitter and a receiver configured to perform measurement using a non-destructive signal (such as ultrasound, microwave, terahertz wave or infrared). The sensing unit 131 may include an analog and / or digital sensor, such as a biosensor, a chemical sensor, a component sensor, a current and / or power meter, an air quality sensor, a gas sensor, a Hall effect sensor, a brightness level sensor, and an optical sensor. The measuring device 130 may include a pressure sensor, a temperature sensor, an ultrasonic sensor, a proximity sensor, a door state sensor, a motion tracking sensor, a humidity sensor, a visible light and infrared sensor, a camera, etc.

[0062] In the following, the technical idea of ​​the present invention will be described with respect to an embodiment as a non-limiting example, in which the measuring device 130 is a loading measuring device (e.g., an online thickness gauge of Thermofisher Scientific) or a thickness gauge configured to measure the loading of the coating layer on the sheet SM. A person skilled in the art will be able to derive an embodiment in which the measuring device includes one of the above-mentioned sensors and is configured to sense one of the above-mentioned measurement quantities.

[0063] The roll map generation system 100 may also include an inspector configured to inspect the electrode sheet ES to collect inspection data. The inspection data may include the results and process events of judging the quality of a part of the electrode sheet ES. For example, the inspection data may include data about the appearance of the electrode sheet ES collected by an image-based inspection device (such as a visual machine), data about disconnections and seams on the electrode sheet ES, data about a part of the electrode sheet ES on which a sampling inspection is performed, data about a part of the electrode sheet ES to be discarded, data about the discarded part of the electrode sheet ES, data about whether the coating material and the insulating material on the electrode sheet ES are defective, data about the reference point indicating the position of the electrode sheet ES, and defect data such as pinhole defects, pit defects, line defects, crack defects, side ring defects, island defects, folding defects, wrinkle defects, deep pit defects, and scratch defects. The reference point can be formed on the electrode sheet ES at a certain interval, and other elements on the electrode sheet ES can be located based on the reference point. The inspector can be a color sensor, a seam sensor, a reference point sensor, or a visual machine.

[0064] The above-mentioned measurement data and inspection data may be time series data. The measurement data and inspection data may be ordered in time. Time ordering is the main feature of time series data. Time ordering is to organize events in the order in which they occur and arrive to be processed. That is, the measurement data and inspection data may be stored based on the time point at which the measurement and inspection are performed, and may be related to time. Therefore, each measurement value of the measurement data may be matched with time, and each inspection value of the inspection data may be matched with time.

[0065] For example, the measurement data (e.g., data on the amount of load 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 load 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 in a one-to-one manner, but are not limited thereto. As another example, the defect data may include a value indicating a defect and a time value associated with the value indicating the defect. Here, the value indicating a defect should be understood to mean that the value includes information about at least one of the presence of a defect and the type of defect.

[0066] The processor 133 may be configured to collect measurement data based on the measurement signal MS sensed by the sensing portion 131. The processor 133 may be connected to the sensing portion 131 by wire or wirelessly. The processor 133 may be configured to calibrate the measurement data by adding an offset measurement to each of a plurality of measurement values ​​of the measurement data. Due to the progress of the process and the aging of the equipment, the measurement value of the measurement data may be different from the actual value. The processor 133 may calibrate the measurement value of the measurement data based on the offset measurement to improve the reliability of the roll map generation system 100 and the roll map generation method. The offset measurement may be determined based on information given to the device system by a method such as a sample test.

[0067] According to an example 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 the server 163 described below via the communication server 153. The file format of the electrode specification file ESF may be JavaScript object notation (JSON), but is not limited thereto. The electrode specification file ESF may be a file format that allows text-based storage of data, such as an extensible markup language (XML), a common delimited value (CSV), a resource description framework (RDF), a spreadsheet, an open document format (open ODF), a portable document format (PDF), a flat text file, or a hypertext markup language (HTML).

[0068] 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 one of an electrically erasable programmable read-only memory (EPROM), a solid state drive (SSD), and a hard disk drive (HDD).

[0069] The electrode specification file ESF may include process information performed on the electrode sheet ES. More specifically, the electrode specification file ESF may include the number of coated strips L1, L2, and L3, the number of uncoated portions U1, U2, U3, and U4, the width of each coated strip L1, L2, and L3, the width of each uncoated portion U1, U2, U3, and U4, and the range of normal measurement amount (i.e., loading amount).

[0070] The processor 133 may be configured to update the measurement conditions based on the electrode specification file ESF. The measurement conditions may include the number of coated strips L1, L2, and L3, the number of uncoated portions U1, U2, U3, and U4, the width of each coated strip L1, L2, and L3, the width of each uncoated portion U1, U2, U3, and U4, and the range of a normal measurement amount (i.e., a loading amount).

[0071] When the recipe of the electrode sheet ES is updated due to a change in the model of the manufactured battery cell, the measurement conditions of the measuring device 130 should also be updated. For example, when the specifications of the battery cell manufactured by the electrode sheet ES change, the processing of the electrode sheet ES and the processing of the measurement data change accordingly.

[0072] For example, Figure 2 As shown, processing the measurement data collected from the electrode sheet ES including three coating tapes L1, L2 and L3 may be different from processing the measurement data collected from the electrode sheet including only a single coating tape. For more accurate feedforward after the secondary battery manufacturing process and the coating process, part of the measurement data should be matched with the object to be collected for matching between the part of the measurement data and the coating tapes L1, L2 and L3. When defects occur, the coating tapes L1, L2 and L3 can be discarded separately, and the productivity and output of the secondary battery manufacturing process can be improved by matching between the part of the measurement data and the coating tapes L1, L2 and L3.

[0073] In order to match between the first portion of the measurement data collected from coated tape L1 and coated tape L1, it should be identified that the first portion of the measurement data has been collected from coated tape L1. In order to match between the second portion of the measurement data collected from coated tape L2 and coated tape L2, it should be identified that the second portion of the measurement data has been collected from coated tape L2. In order to match between the third portion of the measurement data collected from coated tape L3 and coated tape L3, it should be identified that the third portion of the measurement data has been collected from coated tape L3.

[0074] In order to match between part of the measurement data and the coating tapes L1, L2 and L3, the processor 133 can be configured to process the measurement data based on the updated measurement conditions. By updating the measurement conditions, the processor 133 can know that the measurement data is collected from the coating tapes L1, L2 and L3, so the processor 133 can be configured to perform an operation for identifying the object of collection of the measurement data. In addition, when the number of coating tapes set according to the electrode specification data ESD or the electrode specification file ESF (i.e., the number of coating tapes formed on the electrode sheet ES by the die coater) is different from the number of coating tapes sensed, the electrode sheet ES can be determined to be defective.

[0075] Conventionally, the electrode specification data ESD including the model ID and the model formula of the server 165 is not automatically updated by the measuring device 130, and the measurement conditions are manually updated by the operator. When the measurement conditions are manually updated by the operator, the measurement conditions may be incorrectly set, and the incorrect setting of the measurement conditions may cause a large-scale judgment error about the quality of the electrode sheet ES.

[0076] According to an example 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 through the communication server 153. Since the measurement conditions of the processor 133 are automatically updated based on the electrode specification file ESF, erroneous setting of the measurement conditions may be prevented, and the reliability of the volume map may be improved.

[0077] The processor 133 may be configured to calculate the width of the coating bands L1, L2, and L3 based on the measurement data. When the measurement values ​​of the electrode sheet ES greater than or equal to the threshold CP among the measurement values ​​of the measurement data appear continuously for a number equal to or greater than the set number, the processor 133 may match the data points after a series of measurement values ​​with the coating portion. Similarly, when the measurement values ​​of the electrode sheet ES less than the threshold CP among the measurement values ​​of the measurement data appear continuously for a number equal to or greater than the set number, the processor 133 may match the measurement values ​​of the electrode sheet ES after a series of measurement values ​​with the uncoated portion.

[0078] The processor 133 may be configured to compare the measurement data with the electrode specification file ESF. More specifically, the processor 133 may be configured to compare the number of coated strips L1, L2, and L3, the number of uncoated portions U1, U2, U3, and U4, the width of each coated strip L1, L2, and L3, and the width of each uncoated portion U1, U2, U3, and U4 determined based on the measurement data with the process information of the electrode sheet ES of the electrode specification file ESF. The processor 133 may be configured to determine whether the electrode sheet ES is defective based on the measurement data and the electrode specification file ESF.

[0079] The processor 133 may be configured to identify incorrect measurement data based on the measurement data and the electrode specification file ESF. Examples of incorrect measurement data may include incorrect identification of uncoated and coated portions, non-sensing of measured quantities (i.e., loading or thickness), etc. Typically, loading and thickness may be measured by thermodynamic methods and may be incorrectly sensed due to heat development caused by various aspects of the process.

[0080] The first controller 141 can be operably communicated with the first rotary encoder 121 and the second rotary encoder 123, the measuring device 130, and the additional measuring device and the inspector through a wired or wireless data network. The data network can be unidirectional or bidirectional. The data network can be implemented by a physical channel, WiFi, a public network, and / or a dedicated network using Bluetooth or other frequency bands. The first rotary encoder 121 and the second rotary encoder 123, the measuring device 130, and the additional measuring device and the inspector can be configured to collect data from the equipment, workpiece, intermediate product and product in the roll map generation system 100, or generate a signal for collecting data therefrom.

[0081] The first controller 141 may be configured to transmit the coordinate data CD to the processor 133. The processor 133 may be configured to correlate the coordinate data CD with the measurement data to generate coordinate-correlated measurement data CMD. Typically, the measurement data may be processed based on a trigger point.

[0082] As a non-limiting example, the trigger point for processing the measurement data may be the completion of a scan. For example, the sensing portion 131 may scan the electrode sheet ES in the width direction of the electrode sheet ES, and whenever a scan is performed, the measurement data may be stored, processed, manipulated, and transmitted. As another example, the trigger point may be the completion of performing multiple scans or partially completing a scan. Examples of the processing of measurement data may include storing measurement data, manipulating measurement data (e.g., generating coordinate-related measurement data CMD), and transmitting measurement data.

[0083] According to example embodiments, the measuring device 130 may be configured to calibrate the coordinate data CD based on the position of the sensing portion 131. More specifically, the measuring device 130 may be configured to calibrate the coordinate data CD based on the offset length OD to correlate the coordinates of the coordinate data CD with the measured values ​​of the measurement data.

[0084] The measuring device 130 can collect measurement data of a portion corresponding to (e.g., overlapping) the sensing portion 131, and the coordinate data CD is collected by the second rotary encoder 123 spaced apart from the sensing portion 131 as described above, so a portion of the electrode sheet ES corresponding to the winding amount signal WAS generated at the same point in time and a portion of the electrode sheet ES corresponding to the measurement signal MS can be different from each other.

[0085] According to an example embodiment, the processor 133 may be configured to calibrate the coordinate data CD collected simultaneously with the measurement data 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 to collect coordinate-related measurement data CMD. The measurement value of the measurement data may be matched to time, and the measurement value of the coordinate-related measurement data CMD may be matched to the calibration coordinates.

[0086] A plurality of guide rollers may be interposed between the sensing portion 131 and the rewinder 113 to define a moving path of the electrode sheet ES. Therefore, according to the moving path of the electrode sheet ES, the offset length OD may be defined as the length of the electrode sheet ES between the sensing portion 131 and the rewinder 113. The offset length OD may be equal to or greater than a linear distance between the sensing portion 131 and the rewinder 113.

[0087] 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 a plurality of scanning areas S1 and S2. Each of the plurality of scanning areas S1 and S2 is a portion of the electrode sheet ES that is inspected when a scan is performed by the sensing portion 131. The scanning area S1 may include a plurality of sections S11, S12, S13, S14, S15, S16, and S17. The scanning area S2 may include a plurality of sections S21, S22, S23, S24, S25, S26, and S27.

[0088] The coordinate-related measurement data CMD may include a representative value calculated from the measurement value of each of the 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 value of each of the plurality of sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 may include at least one of a mean value, a standard deviation, a median, a maximum value, or a minimum value.

[0089] The coordinate-related measurement data CMD may include representative coordinates (e.g., start coordinates and end coordinates) of each of the 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 value of the coordinate-related measurement data CMD may be matched with the representative coordinates of a corresponding one of the plurality of sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27.

[0090] Sections S11 and S21 may correspond to the uncoated portion U1. Sections S12 and S22 may correspond to the coated strip L1. Sections S13 and S23 may correspond to the uncoated portion U2. Sections S14 and S24 may correspond to the coated strip L2. Sections S15 and S25 may correspond to the uncoated portion U3. Sections S16 and S26 may correspond to the coated strip L3. Sections S17 and S27 may correspond to the uncoated portion U4.

[0091] In order to calculate the representative value of the coordinate-related measurement data CMD, the processor 133 may be configured to match the measured values ​​of the measurement data. When the measured values ​​of the electrode sheet ES greater than or equal to the threshold CP among the measured values ​​of the measurement data appear continuously for a number equal to or greater than a set number (e.g., 5), the processor 133 may be configured to match the data points after a series of measured values ​​with the coated bands L1, L2, and L3. Similarly, when the measured values ​​of the electrode sheet ES less than the threshold CP among the measured values ​​of the measurement data appear continuously for a number equal to or greater than a set number, the processor 133 may match the measured values ​​of the electrode sheet ES after a series of measured values ​​with the uncoated parts U1, U2, U3, and U4.

[0092] For example, when scanning the section S11 , the measurement value of the electrode sheet ES may be less than or equal to the threshold CP, and it may be determined that the measurement data collected from the section S11 is collected from the uncoated portion U1 and matches the section S11 .

[0093] When section S12 is scanned after scanning section S11, the number of continuous measurement values ​​of the electrode sheet ES greater than or equal to the threshold CP is greater than or equal to the set number, so it can be determined that the measurement data collected from section S12 is collected from the coating belt L1 and matches section S12.

[0094] When section S13 is scanned after scanning section S12, the number of consecutive measurement values ​​of the electrode sheet ES less than the threshold CP is greater than or equal to the set number, so it can be determined that the measurement data collected from section S13 is collected from the uncoated portion U2 and matches section S13.

[0095] When section S14 is scanned after scanning section S13, the number of continuous measurement values ​​of the electrode sheet ES greater than or equal to the threshold CP is greater than or equal to the set number, so it can be determined that the measurement data collected from section S14 is collected from the coating belt L2 and matches section S14.

[0096] When section S15 is scanned after scanning section S14, the number of consecutive measurement values ​​of the electrode sheet ES less than the threshold CP is greater than or equal to the set number, so it can be determined that the measurement data collected from section S15 is collected from the uncoated portion U3 and matches section S15.

[0097] When section S16 is scanned after scanning section S15, the number of continuous measurement values ​​of the electrode sheet ES greater than or equal to the threshold CP is greater than or equal to the set number, so it can be determined that the measurement data collected from section S16 is collected from the coating belt L3 and matches section S16.

[0098] When section S17 is scanned after scanning section S16, the number of consecutive measurement values ​​of the electrode sheet ES less than the threshold CP is greater than or equal to the set number, so it can be determined that the measurement data collected from section S17 is collected from the uncoated portion U4 and matches section S17.

[0099] The matching between the multiple segments S21, S22, S23, S24, S25, S26 and S27 of the scanning area S2 and the measurement data collected from the multiple segments S21, S22, S23, S24, S25, S26 and S27 is substantially the same as described above with respect to the multiple segments S11, S12, S13, S14, S15, S16 and S17 of the scanning area S1.

[0100] The processor 133 can be configured to match the measurement values ​​of the measurement data of the electrode sheet ES with the corresponding segments S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26 and S27, and calculate a representative value of the measurement value of each part of the measurement data matching the segments S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26 and S27.

[0101] Calculation of the representative value of each of sections S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26 and S27 may be based on the measurement conditions updated according to the electrode specification file ESF. That is, the measurement conditions of the processor 133 can be updated based on the number of coated strips L1, L2, and L3, the number of uncoated portions U1, U2, U3, and U4, the width of each of the coated strips L1, L2, and L3, the width of each of the uncoated portions U1, U2, U3, and U4, and the range of the normal measurement amount (i.e., loading amount or thickness) of the electrode specification file ESF, and the processor 133 can process the measurement data to calculate the representative value of each of the sections S11, S12, S13, S14, S15, S16, S17, S21, S23, S24, S25, S26, and S27 based on the updated measurement conditions. Therefore, the reliability of the measurement data of the electrode sheet ES can be improved.

[0102] The processor 133 may be configured to generate evaluation data based on the coordinate-related measurement data CMD. The evaluation data may include a judgment value of a process of each of the plurality of sections of the electrode sheet ES. The judgment value of a process of each of the plurality of sections of the electrode sheet ES may be determined based on a comparison between a set range and a measured value (or a representative value of the measured value).

[0103] For example, a representative value within the first range may be determined as normal, a representative value within the second range greater than the first range may be determined as excessive, a representative value within the third range greater than the second range may be determined as very excessive, a representative value within the fourth range less than the first range may be determined as insufficient, and a representative value within the fifth range less than the fourth range may be determined as very insufficient.

[0104] Here, when 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, when 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.

[0105] 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 through 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, the embodiment is not limited thereto. The first controller 141 may transmit the coordinate-related measurement data CMD directly to the server 161.

[0106] The second controller 143 may be configured to control the operation of the unwinder 111, the rewinder 113, and the processing device 115. The second controller 143 may be configured to generate a signal for operating or stopping the unwinder 111, the rewinder 113, and the processing device 115. The signal for operating or stopping the unwinder 111, the rewinder 113, and the processing device 115 may be generated based on the electrode specification data ESD.

[0107] In order to control the process, a communication line for 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. Therefore, compared with the case where the first rotary encoder 121 and 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 first server 161 and the case where the first controller 141 directly transmits the coordinate-related measurement data CMD to the server 161, data transmission through the second controller 143 can reduce resources required for installing the communication line and ensure efficient data processing and management.

[0108] The communication server 151 may include a program for communication between the second controller 143 of the manufacturing device and the server 161. The communication server 151 may be implemented by 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 a ladder diagram.

[0109] The communication server 151 may be configured to convert the electrode specification data ESD transmitted from the server 161 into the language of the second controller 143. In addition, the communication server 151 may be configured to convert the coordinate-related measurement data CMD into the language of the server 161 and record the coordinate-related measurement data CMD in the database of the server 161.

[0110] The electrode specification data ESD may include a product ID and a recipe for identifying a model of a product to be manufactured using the electrode sheet ES. More specifically, the recipe of the electrode specification data ESD may include all matters related to the process of the electrode sheet ES, for example, the number of batches to be processed in the current process, the number of coating bands to be formed on the electrode sheet ES, process conditions such as temperature, humidity, and pressure, and process parameters such as the moving speed of the electrode sheet ES, the discharge amount of the coating mold, and the pressure of the pressing roller.

[0111] The server 161 may be configured to generate a roll map. The roll map may be generated in batches. The roll map may include data about the specifications of the batch. The specifications of the batch may include, for example, the batch number, the length of the wound electrode sheet ES, the width of the electrode sheet ES, and the materials and components used to process the electrode sheet ES. The roll map may include coordinate-related measurement data CMD, as described above. The roll map may also include inspection data matching the coordinates of the coordinate data CD and additional measurement data matching the coordinates of the coordinate data CD.

[0112] According to an example embodiment, server 161 can be a data processing system that supports all activities required for managing the manufacture of secondary batteries, such as work scheduling management, work instructions, quality control, and work performance aggregation. Server 161 can be, for example, manufacturing execution system (MES) software. Server 161 can be configured to perform input, processing, output, and communication of data required for manufacturing electrodes, including coating processes, pressing processes, and slitting processes.

[0113] The server 161 may be configured to generate a visualization command VC for visualizing the volume map. The server 161 may be configured to transmit the visualization command VC to the display device 170. The display device 160 may display the volume map as shown in FIG. Figure 3 Visualization of volume graph VRM shown.

[0114] The visualization volume map VRM may include a plurality of visualization areas VR1 , VR2 , VR3 , VR4 , and VR5 . The plurality of visualization areas VR1 , VR2 , VR3 , VR4 , and VR5 may be set on separate areas of the display device 170 . Figure 3 The arrangement of the multiple visualization areas VR1, VR2, VR3, VR4 and VR5 is merely an example and should not be construed as limiting the technical idea of ​​the present invention in any sense.

[0115] The visualization area VR1 indicates the position and unwinding direction of the unwinder 111. The visualization area VR2 indicates the position and winding direction of the rewinder 113. The relative position of the electrode sheet ES can be identified based on the visualization areas VR1 and VR2. The visualization area VR1 can be adjacent to the starting point on the electrode sheet ES, and the visualization area VR2 can be adjacent to the end point on the electrode sheet ES.

[0116] Figure 3 The visualization area VR1 may indicate that the electrode sheet ES is unwound clockwise from the electrode roll ER1 , and the visualization area VR2 may indicate that the electrode sheet ES is wound counterclockwise into the electrode roll ER1 .

[0117] Visualization area VR3 indicates the material applied to the electrode sheet ES. Figure 3 , the visualization area VR3 indicates that the upper surface of the electrode plate EP is sequentially coated with the first upper slurry US1, the second upper slurry US2, and the upper insulating layer UI, and the lower surface of the electrode plate EP may be sequentially coated with the first lower slurry LS1, the second lower slurry LS2, and the lower insulating layer LI. The visualization area VR3 may also indicate the materials of the electrode plate EP, the first upper slurry US1, the second upper slurry US2, the upper insulating layer UI, the upper insulating layer UI, the first lower slurry LS1, the second lower slurry LS2, and the lower insulating layer LI.

[0118] The visualization area VR4 may include a plurality of visualization bands VUL1, VUL2, and VUL3 obtained by visualizing a plurality of coating bands L1, L2, and L3 on the upper surface of the electrode sheet ES and a plurality of visualization bands VLL1, VLL2, and VLL3 obtained by visualizing a plurality of coating bands L1, L2, and L3 on the lower surface of the electrode sheet ES. The visualization area VR4 may include visualization reference points VDP indicating reference points on the electrode sheet ES. The visualization reference points VDP may be separated from each other by a set interval (e.g., about 600 m)

[0119] In the plurality of visualization bands VUL1, VUL2, and VUL3, the quality of the plurality of coating bands L1, L2, and L3 on the upper surface of the electrode sheet ES may be indicated. In the plurality of visualization bands VUL1, VUL2, and VUL3, the quality of the plurality of coating bands L1, L2, and L3 may be displayed in color. For example, a defective portion of the plurality of visualization bands VUL1, VUL2, and VUL3 and a normal portion thereof may be displayed in different colors.

[0120] In the plurality of visualization bands VLL1, VLL2, and VLL3, the quality of the plurality of coating bands L1, L2, and L3 on the lower surface of the electrode sheet ES may be indicated. In the plurality of visualization bands VLL1, VLL2, and VLL3, the quality of the plurality of coating bands L1, L2, and L3 may be displayed in color. For example, a defective portion of the plurality of visualization bands VLL1, VLL2, and VLL3 and a normal portion thereof may be displayed in different colors.

[0121] The visualization region VR5 may include a scale indicating coordinates on the visualization volume map VRM. The coordinates of each portion of the electrode sheet ES may be roughly identified by the visualization region VR5.

[0122] The visualization area VR6 may represent coordinate-related measurement data CMD collected from multiple coating tapes 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 ​​of sections of multiple coating tapes L1, L2, and L3 on the upper and lower surfaces of the electrode sheet ES. The representative values ​​of each coating tape L1, L2, and L3 may be clearly displayed. The representative values ​​of the multiple coating tapes L1, L2, and L3 may be displayed using different symbols or different colors. The visualization area VR6 may include an index IDX for distinguishing the representative values ​​of the multiple coating tapes L1, L2, and L3.

[0123] In this example, because the representative values ​​of the coordinate-related measurement data CMD of the multiple coating tapes L1, L2 and L3 in the visualization area VR6 are within the normal range, the multiple coating tapes L1, L2 and L3 are displayed in the same color, indicating that there are no defects in the electrode sheet ES in the visualization area VR3.

[0124] The processor 133 may be configured to transmit the measurement data to the server 163. According to an example embodiment, the volume 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.

[0125] Server 163 can be configured to store and process the raw measurement data of the electrode sheet ES. Server 163 can be configured to continuously monitor the processing of the electrode sheet ES based on the measurement data to manage the quality of processing the electrode sheet ES. According to an example embodiment, server 163 can be a Statistical Process Controller (SPC). Server 163 can collect and analyze manufacturing data almost in real time so as to identify problematic situations in a timely manner and provide notifications to the operator before potential problems occur.

[0126] Server 165 can be a solution that manages all information and processes in all stages of the life cycle of a product or service across the global supply chain. Server 165 can be, for example, a Product Lifecycle Management (PLM) solution. Server 165 can be configured to store data regarding projects, components, products, manuals, requirements, engineering change orders, quality, and workflows. Server 165 can be configured to generate and store electrode specification data ESD. Server 165 can be configured to transmit the electrode specification data ESD to the first server 161 and the second server 163.

[0127] 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 can be implemented by 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 can 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, the communication server 151, the communication server 153, the server 161, the server 163, and the server 165 can include one of a simple controller, a complex processor (such as a microprocessor, a CPU, or 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 can be implemented by, for example, a general-purpose computer or dedicated hardware (such as a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), and an Application Specific Integrated Circuit (ASIC)).

[0128] The server 161 and the server 163 may be configured to generate a roll map and an intermediate roll map. In addition to the roll map, the server 161 stores and processes a large amount of data about the general manufacturing and management process, so the roll map stored in the server 220 may include processed and simplified coordinate-related measurement data CMD instead of raw measurement data. The server 163 may be configured to store raw measurement data to operate as an SPC. The server 163 may transmit measurement data corresponding to a selected portion of the roll map in response to a command from the server 161.

[0129] The intermediate roll map may also include measurement data associated with the roll map. That is, in addition to the roll map, the intermediate roll map may also include measurement data as raw data. The measurement data may be associated with the roll map based on a time value. Thus, the intermediate roll map may provide additional insights into the quality of the workpiece, the performance of the process, overall equipment effectiveness (OEE) mining, anomaly sensing, traceability, preventive maintenance, and predictive alerts.

[0130] Servers 161, 163, and 165 may include physical servers or cloud servers. Servers 161, 163, and 165 may provide data and analysis results to operators through various frameworks. The framework may include protocols that support data transmission so that a display device can visualize data through a user interface and provide updated visualizations when servers 161 and 163 calculate new data. The protocols that support data transmission may use HTML, JavaScript, and / or JSON.

[0131] Servers 161, 163, and 165 may include various application programming interfaces (APIs) and other data management tools for storing data in a database. The API may also be used to retrieve data from databases of various data management systems. The data management system may provide access to the database, extract or retrieve data from the database, and generate metrics. Here, metrics are tools for visualizing data. Metrics include measurements generated in a time series manner and may be used to monitor applications and generate status warnings.

[0132] The volume map generation system 100 can implement a plug-in architecture with an API for obtaining data to provide plug-and-play connectivity between the measurement device 130 and additional measurement devices and inspectors. Therefore, resources in a certain process step and a specific site can be easily transferred to a different process and a different site, or new resources can be easily introduced into each process step and each site.

[0133] The data network between the components of the volume map generation system 100 may include various types of communication channels, including unidirectional and bidirectional wired and wireless communications. For example, the data network may include an industrial protocol network such as OPC, Modbus, or ProfiNet. The communication channel may be a dedicated pipe communication such as a universal serial bus (USB), IEEE802 (Ethernet), IEEE1394 (Firewire), or other high-speed data communication standards.

[0134] In some embodiments, the roll map generation system 100 may also include a manual input system that allows an operator to input manufacturing data. The roll map generation system 100 may allow an operator to input data using an input tool and computer-based input of manufacturing data, such as Excel file grabbing.

[0135] 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 implemented 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 a read-only memory (ROM), a random access memory (RAM), a disk storage medium, an optical storage medium, a flash memory, an electrical, optical, acoustic, or other type of radio signal (e.g., a carrier wave, an infrared signal, a digital signal, etc.), and other signals.

[0136] 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 firmware, software, routines and instructions to perform the above operations or processes 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 a memory.

[0137] The first controller 141 and the second controller 143 may be, for example, a programmable logic controller (PLC). A PLC is a special type of microprocessor-based controller that uses a programmable memory to store instructions and implement functions such as logic, sequencing, timing, counting, and arithmetic operations to control machines and processes. It is easy to operate and program a PLC.

[0138] 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, and 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, and the first memory device and the second memory device. The first memory device may be configured to store the system program of the PLC. The first memory device may be, for example, a read-only memory (ROM) and is 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 program may be a program set by the user so that the CPU can perform a specific function. The data may include the above-mentioned coordinate-related measurement data CMD and coordinate data CD. The second memory device may be configured to further store state information of the state of the input device and the output device, as well as the values ​​of timers, counters, and other internal devices. The second memory device may be, for example, a random access memory (RAM).

[0139] The CPU can be configured to control the communication between modules that implement the logic and convert the input signal into an output operation signal. The CPU can operate based on a system program stored in a first memory device. The CPU can be configured to manipulate data based on a user program stored in a second memory device.

[0140] When the PLC is operating, the CPU can be configured to scan the current input conditions and data and store them in the memory device. Next, the CPU can be configured to read and execute the user program step by step, and then transmit the result to one of the output module, the communication module and the memory device.

[0141] The input modules and output modules perform isolation and signal conditioning, so sensors and actuators can be directly connected to the input modules and output modules without other circuits. The input modules and output modules can be configured to transfer data between the CPU and external devices.

[0142] The conditions and data of industrial equipment and production process can be transmitted to CPU through input module.The result of the process performed by CPU can be transmitted to actuator through output module.The input module can include mechanical switch, proximity switch, photoelectric switch, encoder, temperature and pressure switch, potentiometer, linear variable differential transformer, strain gauge, thermistor, thermal transistor and digital and analog device (such as AC / DC thermocouple switch) for position sensing for example.The input module can provide the interface between input device and CPU based on low DC voltage operation.Some input devices can generate analog signal in high voltage range.The input module can be configured to convert the signal generated by input device into voltage in acceptable range of CPU.

[0143] The output module may be configured to generate a signal 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, a motor, etc.

[0144] However, the above components are provided for ease of description, and the above processor 133, first controller 141, second controller 143, communication server 151, communication server 153, server 161, server 163 and server 165 may also be generated by computing devices, distributed computing devices, processors, firmware, software, routines and other devices that execute routines and instructions.

[0145] 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 basic elements in a modern process management system. That is, in the roll map generation system 100 according to the example embodiment, resources of an already installed manufacturing site can be used, and additional capital expenditures can be reduced. In addition, applying the same architecture as existing manufacturing equipment to newly constructed manufacturing equipment may lead to improvements in manufacturing reliability of secondary batteries, detection / improvement of problematic processes, and effective introduction of new processes.

[0146] Based on the above description, a person of ordinary skill in the art will be able to easily derive a roll map generation system including an integrated PLC that executes the functions of each of the first controller 141 and the second controller 143 and a roll map generation system including an integrated server that executes the functions of each of the servers 161, 163 and 165.

[0147] (Second Embodiment)

[0148] Figure 5 is a flow chart of a volume map generation method according to an example implementation.

[0149] refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 In P110, an electrode specification file ESF may be generated based on the electrode specification data ESD. The electrode specification file ESF may be generated by the server 163. The server 163 may 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 may be in, for example, a JSON file format, but is not limited thereto.

[0150] In P120, the electrode specification file ESF may be transmitted to the processor 133. The electrode specification file ESF may be transmitted from the server 163 to the processor 133 via the communication server 153. The electrode specification file ESF may be transmitted to the processor 133 by a message transmission method such as unicast.

[0151] Next, in P130, the measurement conditions of the processor 133 may be updated based on the electrode specification file ESF. The updating of the measurement conditions may include updating the number of coated strips L1, L2, and L3, the number of uncoated portions U1, U2, U3, and U4, the width of each coated strip L1, L2, and L3, the width of each uncoated portion U1, U2, U3, and U4, and the range of the normal measurement amount (i.e., the loading amount).

[0152] Next, in P140 , measurement data of the electrode sheet ES may be collected. The measurement data of the electrode sheet ES may be collected by the processor based on the measurement signal MS. The measurement signal MS may be generated by scanning the electrode sheet ES by the sensing portion 131 of the measurement device 130 .

[0153] Next, in P150, the measurement data may be processed. The processing of the measurement data may include matching portions of the measurement data with corresponding segments in the plurality of segments S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27, and calculating representative values ​​of the plurality of segments S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27. The measurement data may be processed by the processor 133 to generate coordinate-related measurement data CMD. The coordinate-related measurement data CMD may include representative values ​​of each of multiple segments 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) matching the representative values.

[0154] In addition, a person skilled in the art will be able to easily derive an implementation in which the first controller 141 collects coordinate-related measurement data CMD based on the above description. In this case, the processor 133 may calculate representative values ​​of the plurality of segments S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27, and transmit the representative values ​​to the first controller 141. The first controller 141 may be configured to match the representative value of each of the plurality of segments S11, S12, S13, S14, S15, S16, S17, S21, S22, S23, S24, S25, S26, and S27 with its representative coordinates (e.g., start coordinates and end coordinates).

[0155] Next, in P160, the number of the plurality of coated tapes L1, L2, and L3 identified by the processor 133 is compared with the process information. More specifically, the number of the plurality of coated tapes L1, L2, and L3 identified by the processor 133 may be compared with the number of the plurality of coated tapes L1, L2, and L3 of the measurement condition updated according to the electrode specification file ESF. The above comparison may be performed by the processor 133. Through the above comparison, the quality of the electrode sheet ES or the reliability of the measurement performed by the measuring device 130 may be improved.

[0156] Next, in P170, a volume map may be generated. The volume map may be generated by the server 161. The generation of the volume map may include collecting the coordinate-related measurement data CMD, additional coordinate-related measurement data and inspection data, and storing them in a database inside or outside the server 161.

[0157] Next, in P180 , a visualization volume map VRM may be provided. Providing the visualization volume map VRM may include generating a visualization command VC, transmitting the visualization command VC to the display device 170 , and displaying the visualization volume map VRM.

[0158] The visualized roll map VRM may include a visualization area VR1 indicating the position and unwinding direction of the unwinder 111, a visualization area VR2 indicating the position and winding direction of the rewinder 113, a visualization area VR3 indicating the coating material of the electrode sheet ES, a visualization area VR4 indicating the quality of the multiple coating tapes L1, L2 and L3 of the electrode sheet ES (i.e., whether there are defects in the multiple coating tapes L1, L2 and L3), a visualization area VR5 indicating the scale of the coordinates of the visualized roll map VRM, and a visualization area VR6 indicating the coordinate-related measurement data CMD of the multiple coating tapes L1, L2 and L3 of the electrode sheet ES.

[0159] (Third Embodiment)

[0160] Figure 6 is a diagram for describing a scroll map generating system 101 according to other example embodiments.

[0161] refer to Figure 6 The roll image generation system 101 may include an unwinder 111, a rewinder 113, a processing device 115, a first rotary encoder 121, a second rotary encoder 123, a measuring device 130, a first controller 141, a second controller 143, a communication server 151, servers 161 and 165, and a display device 170.

[0162] refer to Figure 6 , except that the communication server 153 and the server 163 are omitted, the volume map generation system 101 is Figure 1 The roll map generation system 100 is substantially the same. Therefore, 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 through the server 161, the communication server 151, the second controller 143 and the first controller 141.

[0163] (Fourth Embodiment)

[0164] Figure 7 is a diagram for describing a volume map generating system 102 according to other example embodiments.

[0165] refer to Figure 7 The roll image generation system 102 may include an unwinder 111, a rewinder 113, a processing device 115, a first rotary encoder 121, a second rotary encoder 123, a measuring device 130, a first controller 141, a second controller 143, a communication server 151, servers 161 and 165, and a display device 170.

[0166] refer to Figure 7 , except that the communication server 153 and the server 163 are omitted and a dedicated communication line is provided between the server 165 and the processor 133, the volume map generation system 102 is Figure 1 The roll map generation system 100 is substantially the same. Therefore, the electrode specification data ESD of the server 165 can be directly transmitted from the server 165 to the processor 133 through a dedicated communication line between the server 165 and the processor 133. The measurement conditions of the processor 133 of the measuring device 130 can be updated based on the electrode specification data ESD transmitted directly from the server 165.

[0167] (Fifth Embodiment)

[0168] Figure 8 is a diagram for describing a scroll map generating system 103 according to other example embodiments.

[0169] refer to Figure 8 The roll image generation system 103 may include an unwinder 111, a rewinder 113, a processing device 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, communication servers 151 and 153, servers 161, 163 and 165, and a display device 170.

[0170] The unwinding machine 111, the rewinding machine 113, the processing device 115, the first rotary encoder 121, the second rotary encoder 123, the measuring device 130, the first controller 141, the second controller 143, the communication servers 151 and 153, and the servers 161, 163 and 165 are the same as those mentioned above. Figure 1 Those described are basically the same, so their description is omitted here.

[0171] 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 on the processing, driving, and stopping of the electrode sheet ES to the processor 133.

[0172] Processor 133 and Figure 1 The processor 133 is substantially the same as the processor 147, but the coordinate-related measurement data CMD may not be collected. The processor 133 may be configured to transmit the 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 based on the above reference Figures 1 to 4 The measurement signal MS is collected and can be time series data sorted in time. In addition, the electrode specification file ESF can be transmitted to the processor 147 through the communication server 153, and the measurement conditions of the processor 147 can be updated based on the electrode specification file ESF.

[0173] 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 similar to that described above with reference to FIG. 1 , except that the coordinate-related measurement data CMD is collected by the processor 147. Figure 1 The descriptions are basically the same, so redundant descriptions are omitted here.

[0174] The present invention has been described in more detail above with reference to the drawings, embodiments, etc. However, the configurations shown in the drawings or the embodiments described in this specification are merely embodiments of the present invention and do not reflect all technical ideas of the present invention, and therefore it should be understood that various equivalents and modifications of alternative configurations will be made on the filing date of this application.

Claims

1. A method for generating a roll graph, the method comprising the following steps: Transmitting process information of the electrode sheet to the processor; updating a measurement condition of the processor based on the process information; collecting measurement data based on a measurement signal generated by measuring the electrode sheet, wherein the measurement data includes measurement values, and the electrode sheet includes a plurality of coated bands and a plurality of uncoated portions; as well as The measurement data is processed based on the measurement conditions updated according to 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 value of the electrode sheet.

3. The method for generating a scroll image according to claim 1, wherein: The process information includes a quantity of the plurality of coated tapes.

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

5. The method for generating a scroll map according to claim 1, wherein: Processing the measurement data of the electrode sheet includes matching measurement values ​​of the measurement data with the plurality of coated bands and the plurality of uncoated portions of the electrode sheet.

6. The method for generating a scroll map according to claim 1, wherein: The processor is configured to distinguish the plurality of coated bands from the plurality of uncoated portions based on a distribution of the measurement data.

7. The method for generating a roll map according to claim 6, further comprising the following steps: The number of the plurality of coated bands distinguished by the processor is compared with the process information.

8. The method for generating a roll graph according to claim 1, further comprising the following steps: matching coordinates of the coordinate data of each of the plurality of coated strips with a representative value to collect the coordinate-related measurement data including the representative value; generating a volume map based on the coordinate related measurement data; as well as A visual volume map is provided based on the volume map.

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

10. The method for generating a scroll map according to claim 8, wherein: The visualized roll map includes a visualization area that displays coordinate-related measurement data for each of the plurality of coated strips distinguishably from one another.

11. The method for generating a scroll map according to claim 9, wherein: The visualized roll map includes a visualization area that displays qualities of the plurality of coated tapes distinguishably from one another.

12. The method for generating a scroll map according to claim 1, wherein: The process information is transmitted to the processor in a JavaScript Object Notation (JSON) format file.

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