How to view intermediate role maps

Abstract

According to an exemplary embodiment, a method for displaying an intermediate roll map is provided, the method including the steps of: transmitting an API call to a server that stores coordinate-related measurement data, the coordinate-related measurement data including measurement data collected based on measurements of an electrode sheet and coordinates associated with the measurement data; transmitting the coordinate-related measurement data in response to the API call; and displaying the coordinate-related measurement data.

Description

[Technical Field]

[0001] The present invention relates to a system configured to generate a visual display of an intermediate roll map representing a roll-to-roll process for manufacturing secondary batteries.This application claims the benefit of Korean Application No. 10-2023-0103079, filed on August 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 a variety of cordless devices, such as handsets, laptops, and cordless 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. 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 press 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 press process, the electrode can be pressed by a pressure roll. The roll press process can determine the density, performance, and surface quality of the electrode. In the slitting process, the electrode can be cut into multiple electrodes according 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 method for displaying an intermediate roll map containing information about the quality and defects of the electrode manufacturing process. [Means for solving the problem]

[0005] According to an exemplary embodiment of the present invention, there is provided a method for displaying an intermediate roll map, the method including the steps of: transmitting an API call to a server that stores coordinate-related measurement data, the coordinate-related measurement data including measurement data collected based on measurements of an electrode sheet and coordinates associated with the measurement data; transmitting the coordinate-related measurement data in response to the API call; and displaying the coordinate-related measurement data.

[0006] The coordinate-related measurement data is displayed in a graphical format.

[0007] The coordinate-related measurement data is transmitted in JSON format.

[0008] The coordinate-related measurement data represents the loading amount of electrode slurry on the electrode sheet.

[0009] The coordinate-related measurement data represents the thickness of the electrode slurry on the electrode sheet.

[0010] The coordinate-related measurement data is partially visualized, and the coordinate-related measurement data is displayed with a scroll to select the visualized portion of the coordinate-related measurement data.

[0011] According to an exemplary embodiment, a method for displaying an intermediate roll map is provided, the method including displaying coordinate-related inspection data generated based on inspection of an electrode sheet and coordinate-related measurement data generated based on measurement of the electrode sheet, the coordinate-related inspection data being displayed in a tabular format.

[0012] The coordinate-related inspection data is further displayed in a graphical format.

[0013] The table includes a plurality of columns, and the portion of the coordinate-related inspection data that is displayed in the graphical format is determined by selection of the plurality of columns.

[0014] The coordinate-related inspection data represents a mismatch between an upper applicator lane on the upper surface of the electrode sheet and a lower applicator lane on the lower surface opposite the upper surface of the electrode sheet.

[0015] The coordinate-related inspection data indicates the width of the coated portion lane and the width of the uncoated portion of the electrode sheet.

[0016] The coordinate-related inspection data indicates the overlay width between the application section lane of the electrode sheet and the insulating layer.

[0017] The coordinate-related inspection data represents the width of the insulating layer of the electrode sheet. [Effects of the Invention]

[0018] According to an exemplary embodiment of the present invention, a method can be provided for displaying intermediate roll maps that allow feedback, feedforward, and tracking for electrode processes.

[0019] 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]

[0020] [Figure 1] 1 illustrates a secondary battery manufacturing system according to an exemplary embodiment. [Figure 2] 10 is a flowchart illustrating a method for displaying an intermediate role map according to an exemplary embodiment. [Figure 3] 10 illustrates a screen displaying an intermediate role map according to an exemplary embodiment; [Figure 4] 10 illustrates a screen displaying an intermediate role map according to an exemplary embodiment; [Figure 5] 1 illustrates a role map generation system according to an exemplary embodiment. [Figure 6] 1 illustrates a role map generation system according to an exemplary embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] 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.

[0025] (First embodiment) FIG. 1 shows a secondary battery manufacturing system 10 according to an exemplary embodiment.

[0026] Referring to FIG. 1, a secondary battery manufacturing system 10 may include a secondary battery manufacturing apparatus 100, a roll map generator 200, and a client device 300.

[0027] The secondary battery manufacturing apparatus 100 may be configured to perform a manufacturing process of a secondary battery. The secondary battery manufacturing apparatus 100 may include an unwinder 111, a rewinder 113, a processing tool 115, a first rotary encoder 121, a second rotary encoder 123, a measuring instrument 131, an inspector 133, a first controller 141, and a second controller 143.

[0028] The unwinder 111 can be configured to unwind the electrode sheet ES from the electrode roll ER1. The rewinder 113 can be configured to wind the electrode sheet ES onto the electrode roll ER2. This allows the electrode sheet ES to move between the unwinder 111 and the rewinder 113.

[0029] A process for manufacturing a secondary battery (e.g., an electrode process) can be performed on the electrode sheet ES. The electrode process is performed on the electrode sheet ES that is unwound from the electrode roll ER1 and wound around the electrode roll ER2, so the electrode process can also be called a roll-to-roll process.

[0030] The electrode sheet ES may be processed by the processing tool 115. For example, the processing tool 115 may include a coater, and electrode slurry may be coated onto the electrode sheet ES. For 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. For 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. For another example, the processing tool may include a slitting knife, and the electrode sheet ES may be separated into multiple electrode sheets.

[0031] 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 may be prepared by dissolving the electrode active material, the conductive material, the binder, and the like in a solvent.

[0032] 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.

[0033] 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.

[0034] The first rotary encoder 121 may be configured to sense the amount of electrode sheet ES unwound from the 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 the 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 input amount data based on the unwinding amount signal UWAS of the electrode sheet ES. The input amount data may indicate the amount of material (i.e., electrode roll ER1) input into the secondary battery manufacturing apparatus 100 to manufacture a secondary battery.

[0035] The second rotary encoder 123 may be configured to sense the amount of electrode sheet ES wound onto the 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 winding amount of the electrode sheet ES. The second rotary encoder 123 may be configured to transmit the winding amount signal WAS to the first controller 141. The first controller 141 may be configured to collect consumption amount data based on the winding amount signal WAS of the electrode sheet ES. The consumption amount data may indicate the production performance of the secondary battery manufacturing apparatus 100.

[0036] A portion 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. Furthermore, if the electrode sheet ES is stretched by pressure in a subsequent process such as a roll press, the amount of electrode sheet ES taken up by the unwinder 111 may differ from the amount of electrode sheet ES taken up by the rewinder 113.

[0037] As a non-limiting example, the first controller 141 and the second controller 143 may be programmable logic controllers (PLCs). 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.

[0038] The first controller 141 and the second controller 143 may include a power supply, a CPU, an input interface, an output interface, a communication interface, and a memory device. The power supply may be configured to supply power to other elements of the first controller 141 and the second controller 143, such as the CPU, the input interface, the output interface, the communication interface, and the memory device, for operation of the first controller 141 and the second controller 143. The memory device may include a read-only memory (ROM) configured to store system programs such as an operating system, and a random access memory (RAM) configured to store user programs and data such as status information of input / output devices, timers, counters, and other internal device values. The CPU may be configured to implement logic and control communication between modules that convert input signals into output operating signals. The CPU may operate based on system programs and user programs stored in the memory device. The CPU may be configured to write or read inspection data and measurement data to or from the data area of ​​the memory device based on the system programs and user programs. Conditions and data of industrial equipment and production processes may be transmitted to the CPU via the input module. The results processed by the CPU may be transmitted to the actuator via the output module. The communication interface may be configured to transmit and receive data between the first controller 141 and the second controller 143, or between the second controller 143 and the server 210.

[0039] However, without being limited thereto, the first controller 141 and the second controller 143 may include any 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 first controller 141 and the second controller 143 may also be embodied by 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).

[0040] The first controller 141 may be configured to collect coordinate data CD of the electrode sheet ES based on one of the unwinding amount signal UWAS and the winding amount signal WAS of the electrode sheet ES. For example, the first controller 141 may determine the movement distance of the electrode sheet ES based on the winding amount signal WAS of the electrode sheet ES, thereby determining the position within the electrode sheet ES of the portion of the electrode sheet ES that is wound by the rewinder 113 at each point in time during the coating process. 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.

[0041] 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 have a coordinate. The coordinate may be a one-dimensional quantity in the running direction (or the longitudinal direction of the electrode sheet ES), which is the direction of movement of the electrode sheet ES, but is not limited to this. The coordinate may also be a two-dimensional quantity in the running direction and the lateral direction (or the width direction of the electrode sheet ES).

[0042] The measuring device 131 may be configured to measure the electrode sheet ES to collect measurement data of the electrode sheet ES. The measurement data may be raw data, and processing of the measurement data may determine an evaluation and a determination value of the portion of the electrode sheet ES from which the measurement data was collected. By way of non-limiting example, the measuring device 131 may be any one of a web gauge and a thickness gauge from Thermofisher Scientific.

[0043] The measuring device 131 can be configured to scan the electrode sheet ES. During scanning of the electrode sheet ES, the measuring device 131 can move along the lateral direction of the electrode sheet ES. During one scanning, the sensing unit 131S of the measuring device 131 can move from one lateral end of the electrode sheet ES to the other lateral end of the electrode sheet ES.

[0044] While the measuring device 131 performs lateral scanning, the electrode sheet ES can be moved in the travel direction by the unwinder 111 and the rewinder 113. This allows the portion of the electrode sheet ES measured by the measuring device 131 to have a zigzag shape.

[0045] The measurement data may include test results expressed as numerical values. The measurement data may include data on the amount of coating material loaded on the electrode sheet ES and data on the thickness of the coating material on 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 area density of the coating material.

[0046] The measuring instrument 131 may include a sensing unit 131S and a processor 131P. The sensing unit 131S may be configured to sense a physical quantity of the electrode sheet ES to generate a measurement signal MS. For example, the sensing unit 131S 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 131S 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 131S 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 131 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.

[0047] The processor 131P may be configured to receive a measurement signal MS sensed by the sensing unit 131S to collect measurement data. The processor 131P may be configured to collect the measurement data based on the measurement signal MS. The processor 131P may be connected to the sensing unit 131S via a wired or wireless connection. The processor 131P 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 131P can improve the reliability of the roll map generator 200 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.

[0048] The inspector 133 may be configured to inspect the electrode sheet ES to collect inspection data ID. The inspector 133 may include any one of a color sensor, a seam sensor, a reference point sensor, and a vision machine.

[0049] The inspection data ID can include, for example, 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 the portions of the electrode sheet ES that have been sampled, data on the portions of the electrode sheet ES that are scheduled for scrapping, data on the scrapped portions of the electrode sheet ES, data on the quality of the coating material and insulating layer on the electrode sheet ES, data on reference points that indicate the position of the electrode sheet ES, and defect data such as pinhole defects, crater defects, line defects, crack defects, side ring defects, island defects, fold defects, wrinkle defects, poke defects, and dent defects. The inspection data ID can include a judgment value for the quality of the portions of the electrode sheet ES (for example, a value indicating the presence or absence of defects and the type of defect).

[0050] Here, the electrode sheet appearance data may include width data of the electrode sheet ES determined based on image-based inspection, width data of the insulating layer on the electrode sheet, overlay data indicating the overlap width between the coating material (i.e., electrode slurry) on the electrode sheet and the insulating layer, and mismatch data indicating misalignment between the coating lane on the lower surface and the coating lane on the upper surface of the electrode sheet ES. Reference points may also 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 original inspection data (e.g., images of defective portions of the electrode sheet ES) may be stored in a separate server of the roll map generator 200.

[0051] The inspection data ID may include width data of the coated portion lane and uncoated portion of the electrode sheet ES determined based on an image-based inspection of the electrode sheet ES, dimensional data such as the width of the insulating layer and the overlap width between the coating material and the insulating layer, and mismatching data between the coated portion lane on the upper surface of the electrode sheet ES and the coated portion lane on the lower surface of the electrode sheet ES.

[0052] The inspector 133 may include a sensing unit 133S and a processor 133P. The sensing unit 133S may be configured to sense a physical quantity of the electrode sheet ES to generate a measurement signal MS. For example, the sensing unit 133S may include any one of the sensors described above with respect to the sensing unit 131S.

[0053] The processor 133P may be configured to receive and process the raw test signal IS sensed by the sensing unit 133S to collect the test data ID. The processor 133P may include an algorithm for processing the image of the portion of the electrode sheet ES to determine a test value of the test data ID, or a model (e.g., an artificial neural network) trained to determine the test value based on the image of the portion of the electrode sheet ES.

[0054] The above-mentioned measurement data and test data IDs may be time-series data. The measurement data and test data IDs may be aligned in time. The measurement data and test data may be indexed by time. The measurement data may include a measurement value and a time value (or time values) matched to the measurement value. The test data ID may include a test value and a time value (or time values) matched to the test value. That is, the measurement data and test data may be stored based on the time at which the measurement and test were performed, and the measurement data and test data may be associated with time. The time values ​​of the measurement data and test data may have, for example, but are not limited to, a timestamp format.

[0055] As an example, the measurement data (e.g., loading amount data on the electrode sheet ES or thickness data of the electrode sheet ES) may have a series of measurement values ​​and time values ​​associated with the series of measurement values. The measurement values ​​and time values ​​may be matched one-to-one, but are not limited to this. The measurement values ​​may also be matched many-to-one with a single timestamp representing the start point of the measurement. As another example, the defect data may have a value indicating a defect and a time value associated with the value indicating a defect. Here, indicating a defect includes at least one of the presence or absence of a defect and the type of defect.

[0056] The first controller 141 may be in operative communication with the first rotary encoder 121, the second rotary encoder 123, the measuring instrument 131, the additional measuring instrument, and the additional inspection instrument via a wired or wireless data network. The data network may be unidirectional or bidirectional. The data network may be implemented by a public network and / or a dedicated network using a physical channel, Wi-Fi, Bluetooth, and / or other frequency bands. The first rotary encoder 121, the second rotary encoder 123, the measuring instrument 131, the additional measuring instrument, and the additional inspection instrument may be configured to collect data or generate signals for collecting data from equipment, workpieces, semi-finished products, and finished products within the secondary battery manufacturing apparatus 100. The first controller 141 may be configured to transmit coordinate data CD to the processor 131P.

[0057] The processor 131P can be configured to generate coordinate-related metrology data CMD based on the coordinate data CD and the metrology data. The processor 131P can be configured to associate the metrology data with the coordinate data CD to generate the coordinate-related metrology data CMD. Generally, the metrology data can be processed based on the trigger point. Examples of processing the metrology data include storing the metrology data, manipulating the metrology data (e.g., generating the coordinate-related metrology data CMD), and transmitting the metrology data.

[0058] 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 131S may scan the electrode sheet ES laterally, 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.

[0059] The electrode sheet ES can be divided into a plurality of sections based on the scanning of the sensing unit 131S of the measuring instrument 131. That is, each of the plurality of sections can correspond to one scanning of the sensing unit 131S.

[0060] According to an exemplary embodiment, the measuring instrument 131 can be configured to calibrate the coordinate data CD based on the position of the measuring instrument 131. More specifically, the measuring instrument 131 can 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.

[0061] The measuring instrument 131 can collect measurement data of the portion corresponding to (e.g., overlapping with) the sensing unit 131S, and the coordinate data CD is collected by the second rotary encoder 123 spaced apart from the sensing unit 131S as described above. As a result, the portion of the electrode sheet ES corresponding to the coordinate data CD collected at the same time and the portion of the electrode sheet ES corresponding to the measurement data may be different.

[0062] According to an exemplary embodiment, coordinate-related measurement data CMD can be provided by calibrating coordinate data CD collected at the same time as the measurement data based on the offset length OD1 and associating the calibrated coordinate data CD with the measurement data. The coordinate-related measurement data CMD can include measurement values, time values ​​matched to the measurement values, and start and end coordinates. The time value can be a timestamp indicating the date and time when the measurement data was collected. The start and end coordinates can represent the start and end points of the portion of the electrode sheet ES from which the measurement data was collected. The start and end coordinates can be determined based on the calibrated coordinate data CD. The coordinate-related measurement data CMD can include a measurement instrument ID for identifying the measurement instrument 131 and an equipment ID for identifying the secondary battery manufacturing apparatus 100.

[0063] As another example, the sensing unit 131S may be directly connected to a position measuring device such as the first rotary encoder 121 and the second rotary encoder 123, or may be configured to sense a reference point of the electrode sheet ES. In this case, the processor 131P may be configured to collect coordinate-related measurement data CMD based on the measurement signal MS transmitted from the sensing unit 131S.

[0064] A plurality of guide rolls for defining a movement path of the electrode sheet ES may be interposed between the sensing unit 131S and the rewinder 113. Thus, the offset length OD1 may be defined as the length of the electrode sheet ES interposed between the portion of the electrode sheet ES sensed by the sensing unit 131S and the rewinder 113. The offset length OD1 may be the same as the linear distance between the sensing unit 131S and the rewinder 113, or may be longer than the linear distance between the sensing unit 131S and the rewinder 113.

[0065] The processor 131P can be configured to generate compressed measurement data PMD based on the measurement data and the coordinate data CD. The compressed measurement data PMD can include a representative value of the measurement data for each of the multiple sections of the electrode sheet ES, a judgment value, and the start and end coordinates of each of the multiple sections of the electrode sheet ES. The compressed measurement data PMD can further include a timestamp indicating the date and time when the measurement data for the multiple sections was collected, a measuring instrument ID, and an equipment ID.

[0066] The processor 131P can be configured to calculate a representative value of the measurement data for each of the multiple sections of the electrode sheet ES. The representative value of the measurement data for each of the multiple sections of the electrode sheet ES can include at least one of the mean, standard deviation, median, maximum value, and minimum value of the measurement data for each of the multiple sections.

[0067] For example, if the coordinate-related measurement data CMD has 1,500 measurement values ​​corresponding to one scanning of the sensing unit 131S, the compressed measurement data PMD may include a single representative value calculated based on the 1,500 measurement values. As a result, the size of the compressed measurement data PMD may be different from the size of the coordinate-related measurement data CMD. The size of the compressed measurement data PMD may be even smaller than the size of the coordinate-related measurement data CMD. The start and end coordinates of the compressed measurement data PMD are substantially the same as the start and end coordinates of the corresponding coordinate-related measurement data CMD.

[0068] The server 220, which will be described later, performs various operations for managing the production of secondary batteries in addition to generating a roll map. According to an exemplary embodiment, the server 220 generates a roll map based on compressed measurement data PMD instead of coordinate-related measurement data having a size similar to that of raw measurement data, thereby reducing the resources of the server 220 allocated to generating and storing the roll map. This allows for continuous production management of the server 220 and improves the reliability of secondary battery production.

[0069] The measurement data is processed in a set manner to determine judgment values ​​for multiple sections of the electrode sheet ES. If the measured amount of coating material on the electrode sheet ES (e.g., the loading amount on the electrode sheet ES or the thickness of the electrode sheet ES) is within a set range including an upper limit and a lower limit, the corresponding portion of the electrode sheet ES can be determined to be good. If the measured amount of coating material on the electrode sheet ES (e.g., the loading amount on the electrode sheet ES or the thickness of the electrode sheet ES) is smaller than the lower limit or larger than the upper limit, the corresponding portion of the electrode sheet ES can be determined to be defective.

[0070] As another example, a measurement value (or representative value) within a first range can be determined to be normal, a measurement value (or representative value) within a second range even larger than the first range can be determined to be excessive, a measurement value (or representative value) within a third range even larger than the second range can be determined to be very excessive, a measurement value (or representative value) within a fourth range even smaller than the first range can be determined to be insufficient, and a measurement value (or representative value) within a fifth range even smaller than the fourth range can be determined to be very insufficient.

[0071] 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.

[0072] The processor 131P may be configured to transmit the compressed measurement data PMD to the first controller 141. The processor 131P may be configured to transmit the coordinate-related measurement data CMD to the roll map generator 200 (more specifically, to the server 230 of the roll map generator 200). The coordinate-related measurement data CMD may be transmitted to the server 230 via the server 210, but is not limited thereto. The coordinate-related measurement data CMD may also be transmitted directly from the processor 131P to the server 230.

[0073] The processor 133P may be configured to transmit the inspection data ID to the first controller 141. The first controller 141 may be configured to generate (or collect) coordinate-related inspection data CID based on the inspection data ID and the coordinate data CD. Similar to the coordinate-related measurement data CMD, the coordinate-related inspection data CID may be provided by calibrating the coordinate data CD based on the offset length OD2 and associating the calibrated coordinate data CD with the inspection data ID, but is not limited thereto.

[0074] In another example, the processor 133P may receive the coordinate data CD from the controller 141, and the coordinate-related inspection data CID may be generated by the processor 133P based on the coordinate data CD and the inspection data ID.

[0075] The first controller 141 may be configured to transmit the compressed measurement data PMD and the coordinate-related inspection data CID to the second controller 143. The second controller 143 may be configured to transmit the compressed measurement data PMD and the coordinate-related inspection data CID to the roll map generator 200. However, without being limited thereto, the first controller 141 may also transmit the compressed measurement data PMD and the coordinate-related inspection data CID directly to the roll map generator 200.

[0076] 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 unwinder 111, the rewinder 113, and the processing tool 115. The signals for operating and interrupting the unwinder 111, the rewinder 113, and the processing tool 115 can be generated based on the electrode specification data ESD, the compressed measurement data PMD, the test data ID, the additional test signal, and the additional measurement signal.

[0077] The role map generator 200 may include servers 210, 220, 230, 240, and 250. The servers 210, 220, 230, 240, and 250 may be separate entities that perform various functions, including generating role maps and intermediate role maps, storing role maps and intermediate role maps, or relaying communications between the servers 210, 220, 230, 240, and 250. Unlike the illustration of FIG. 1, some of the servers 210, 220, 230, 240, and 250 may be integrated. For example, the servers 220 and 230 may be integrated, or the servers 220 and 240 may be integrated, or the servers 220, 240, and 250 may be integrated.

[0078] The roll map generator 200 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. As described above, 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, feedforward, and tracking of the manufacturing process of the secondary battery, as described below.

[0079] The roll map can include event data representing events in the roll-to-roll process of the electrode sheet ES. Event data generally occurs as the process progresses, and is therefore time-series data. As a result, process event data can include values ​​representing events and their corresponding time values. Time-series data can be temporally ordered. Temporal ordering is a key characteristic of time-series data, and it organizes events in the order in which they occur and arrive for processing. That is, time-series data can be sorted based on the time at which an event occurred (i.e., the time at which inspection and measurement were performed or a process action was taken), and events can be matched with time values.

[0080] The manufacturing of secondary batteries involves a series of distinct processes, with leading processes affecting subsequent processes. Feedforward refers to correcting subsequent processes based on data generated according to the results of a previous process. In this case, if the time series data of a previous process is not directly matched with the real-world workpiece, semi-finished product, and finished product, it is difficult to reflect the time series data of the previous process in the subsequent process. Here, the term "workpiece" refers to an article provided as the result of each process, such as the electrode sheet ES after 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 cut by a 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 operate as a secondary battery through an activation process. The above definitions of workpiece, semi-finished product, and finished product relate to one aspect of each and do not exclude their usual definitions.

[0081] For feedforward, time-series data must be associated with the real-world positions of images of workpieces, parts, semi-finished products, and finished products. In roll mapping, time-series data such as measurement data can be associated with coordinate data CD based on the movement of the electrode sheet ES (i.e., either the winding or unwinding amount). Roll mapping can associate time-series data with coordinate data including coordinates indicating the real-world positions of images of workpieces, parts, semi-finished products, and finished products. This allows roll map generation and roll map-based feedforward to achieve improved production efficiency and quality by quantifying and objectifying process aspects that previously relied on operator discretion.

[0082] The roll map may be generated on a lot-by-lot basis. The electrode sheet ES is wound onto the electrode roll ER2, and after reaching a target winding amount, the electrode roll ER2 may be cut and separated from the electrode sheet ES connected to the electrode roll ER1. A lot is a production unit in a roll-to-roll process, and the electrode roll ER2 separated from the electrode sheet ES is an example of a lot. Accordingly, the server 220 may be configured to store a roll map of a previous process. The roll map of the previous process may correspond to the electrode roll ER1. The server 220 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 electrode roll ER2.

[0083] The roll map of a previous lot can also be used to improve the process for subsequent lots, and such an action can be called process feedback. Process feedback using a roll map can include identifying process conditions and process parameters that lead to problems and defects based on the data contained in the roll map.

[0084] Furthermore, as described below, roll maps are cumulatively generated for workpieces, parts, semi-finished products, and finished products of a unit process, thereby enabling 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 a roll map of the electrodes and separator included in the battery cell. As a result, if an event such as a quality problem occurs in a battery cell that has already been shipped, the collective data history of the manufacturing of the battery cell can be retrieved based on the cell ID.

[0085] The compressed measurement data PMD and the coordinate-related inspection data CID may be transmitted to the server 220 via the server 210. The server 210 may be a communication server. For example, the server 210 may be a server for communication based on log data, but is not limited thereto. The server 210 may be a program for communication between the second controller 143 of the manufacturing equipment and the server 220 for manufacturing management. The server 210 may also be implemented as hardware, as described below. The language and protocol of the server 220 may be different from the language and protocol of the second controller 143. For example, the language of the server 220 may be SQL, and the language of the second controller 143 may be ladder diagram.

[0086] The server 210 may be configured to convert the electrode specification data ESD transmitted from the server 220 into a language of the second controller 143. The server 210 may also be configured to convert the compressed measurement data PMD and the coordinate-related inspection data CID into a language of the server 220 and record the compressed measurement data PMD and the coordinate-related inspection data CID in a database of the server 220. The compressed measurement data PMD and the coordinate-related inspection data CID may be stored in the database of the server 220 in a JSON format.

[0087] The electrode specification data ESD may include model information and a recipe for the electrode sheet ES. The electrode specification data ESD may include various items related to the processing of the electrode sheet ES, such as the number of lots processed in the current process, the number of coating lanes 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.

[0088] In order to control the process, a communication line connecting the second controller 143 and the server 220 via the server 210 may be installed between the second controller 143 and the server 220. 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 131 directly transmit the unwinding amount signal UWAS, the winding amount signal WAS, and the measurement signal MS to the first server 220, or a case in which the first controller 141 directly transmits the compressed measurement data PMD to the server 220.

[0089] The server 220 can be configured to generate a roll map. The roll map can include data regarding lot specifications, such as the lot number, the length of the rolled electrode sheet ES, the width of the electrode sheet ES, and the materials and composition used in processing the electrode sheet ES.

[0090] According to an exemplary embodiment, server 220 may be a data processing system that supports various activities required to manage the manufacturing of secondary batteries, such as work schedule management, work instructions, quality control, and work performance aggregation. Server 220 may be, for example, a manufacturing execution system (MES). Server 220 may be configured to input, process, output, and communicate data required for electrode manufacturing processes, such as a coating process, a roll pressing process, and a slitting process.

[0091] The server 230 may be configured to store the coordinate-related measurement data CMD. The server 230 may be configured to transmit the coordinate-related measurement data CMD to the server 240 in response to an API request AR from the server 240. The API request AR may include information for identifying the coordinate-related measurement data CMD. The API request AR may include, for example, a timestamp, a start coordinate, and an end coordinate.

[0092] More specifically, a second request RQ2 for displaying the intermediate roll map may be transmitted from the client device 300 to the server 240. The second request RQ2 may be generated by inputting search parameters for generating the API request AR. The search parameters may include coordinate values ​​of the coordinate-related measurement data CMD, the equipment code of the secondary battery manufacturing apparatus 100 where the measurement data MED was collected, the collection date and time of the measurement data MED, and measurement items.

[0093] The equipment code may include information for identifying the secondary battery manufacturing apparatus 100, such as the type of equipment and the installation site. The collection date and time may have a timestamp format. The measurement items indicate physical quantities of the electrode sheet ES represented by the measurement data MED, such as the loading amount and thickness.

[0094] The server 240 may be configured to generate an intermediate role map. The server 240 may be configured to generate an API request AR in response to the second request RQ2. The API request AR may be generated based on search parameters. The server 240 may be configured to receive coordinate-related measurement data CMD from the server 230. The server 240 may store role map data D1. The server 240 may be configured to associate the role map data D1 with the coordinate-related measurement data CMD. The server 240 may be configured to transmit to the client device 300 a uniform resource locator (URL) (or schema) including source code for displaying the intermediate role map data D2 on the client device 300.

[0095] The client device 300 can access the source code for displaying the coordinate-related measurement data CMD and the coordinate-related inspection data CID via a URL (or schema), which allows the client device 300 to display the intermediate role map.

[0096] The server 240 may also be configured to store and process coordinate-related inspection data CID of the electrode sheets ES. The server 240 may manage the quality of the electrode sheet ES processing by continuously monitoring the processing of the electrode sheets ES based on the inspection data. According to an exemplary embodiment, the server 240 may be a statistical process controller (SPC). The server 240 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.

[0097] Server 250 can be configured to store data from servers 220, 230, and 240. Server 250 can be configured to store coordinate-related measurement data CMD and compressed measurement data PMD. If server 220 is an MES and server 240 is an SPC, they may be incompatible for long-term storage of coordinate-related measurement data CMD and compressed measurement data PMD. Server 250 can be, for example, a data warehouse, and can store coordinate-related measurement data CMD and compressed measurement data PMD for long periods of time based on, for example, a product's quality guarantee period. This can provide tracking of manufacturing processes according to the product lifecycle.

[0098] The processors 131P, 133P and the servers 210, 220, 230, 240, and 250 may be implemented using hardware, firmware, software, or a combination thereof. For example, the processors 131P, 133P and the servers 210, 220, 230, 240, and 250 may include computing devices such as workstation computers, desktop computers, laptop computers, and tablet computers. The processors 131P, 133P and the servers 210, 220, 230, 240, and 250 may include any one of a simple controller, a complex processor such as a microprocessor, a CPU, or a GPU, a processor configured by software, or dedicated hardware and firmware. The processors 131P, 133P and servers 210, 220, 230, 240, 250 may be implemented by, for example, a general-purpose computer or application-specific hardware such as a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit).

[0099] Because the server 220 stores and processes much data related to general manufacturing control other than the roll map, the roll map stored on the server 220 may include simplified, compressed measurement data PMD instead of coordinate-related measurement data CMD containing raw measurement data. The server 220 can provide the roll map in response to a request from the client device 300. The client device 300 can display intermediate roll map data D2 as shown in FIGS. 3 and 4.

[0100] The client device 300 may be any device for communicating with the role map generator 200, such as a workstation computer, a notebook computer, a laptop computer, a desktop computer, a mobile device such as a tablet or a smartphone, or a wearable device. The client device 300 may be configured to generate a request RQ1 for loading a role map or a request RQ2 for displaying an intermediate role map. The client device 300 may be configured to transmit the requests RQ1 and RQ2 to the role map generator 200. The client device 300 may include an input tool for inputting the requests RQ1 and RQ2 and a display device for displaying the screens SCR of FIGS. 3 and 4.

[0101] An intermediate roll map can be provided by associating coordinate-related metrology data CMD, which includes raw metrology data, with a roll map. The coordinate-related metrology data CMD can be associated with the roll map based on timestamp and coordinates. The intermediate roll map can provide statistical production control by providing information about the raw metrology data in addition to the roll map, which provides information about defects and defect-based production performance. This allows the intermediate roll map to provide additional insight into workpiece quality, process performance, OEE (Overall Equipment Effectiveness) drill-down, anomaly detection, traceability, preventative maintenance, and predictive alerts.

[0102] The servers 210, 220, 230, 240, and 250 may include physical servers or cloud servers. The servers 210, 220, 230, 240, and 250 may provide data and analysis results to operators through various frameworks. The frameworks may include protocols that support data transmission so that the client device 300 can visualize data through a user interface and provide updated visualizations when new data is calculated by the servers 220 and 230. The protocols that support data transmission may use HTML, JavaScript, and / or JSON.

[0103] The servers 210, 220, 230, 240, and 250 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.

[0104] In some embodiments, the operations of the processors 131P, 133P and the servers 210, 220, 230, 240, and 250 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.

[0105] The processors 131P, 133P and the servers 210, 220, 230, 240, and 250 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 processors 131P, 133P and the servers 210, 220, 230, 240, and 250 may be instantiated in memory.

[0106] However, this is for convenience of explanation, and the operations of the processors 131P, 133P and servers 210, 220, 230, 240, 250 described above may be caused by a computing device, a distributed computing device, a processor, firmware, software, routines, instructions, or other device executing the same.

[0107] The secondary battery manufacturing system 10 may implement a plug-in architecture together with an API for data acquisition to provide plug-and-play connection of the measuring instrument 131, the tester 133, additional measuring instruments, and additional testers, thereby allowing resources at a specific process step and a specific site to be easily transferred to other processes and other sites, or new resources to be easily introduced to each process step and site.

[0108] The data network between elements of the secondary battery manufacturing system 10 can include various types of communication channels, including unidirectional, bidirectional wired, and wireless communication. As an 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 USB (Universal Serial Bus), IEEE 802 (Ethernet), IEEE 1394 (FireWire), or other high-speed data communication standards.

[0109] In some embodiments, the roll map generator 200 can further include a manual input system that allows an operator to input manufacturing data. The roll map generator 200 can allow operator data entry using an input tool and computer-based input of manufacturing data, such as scraping an Excel file.

[0110] The architecture configured to generate roll maps and intermediate roll maps can be implemented by adding only the first controller 141 to the essential elements of a modern process control system. That is, the system according to the exemplary embodiment can utilize resources already installed at manufacturing sites, 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.

[0111] (Second embodiment) FIG. 2 is a flowchart illustrating a method for displaying an intermediate role map according to an exemplary embodiment.

[0112] 3 and 4 show the screen SCR of the client device 300 displaying the intermediate role map.

[0113] 1 and 2, search parameters can be input in P110. As described above, the search parameters can include the start coordinate, end coordinate of the coordinate-related measurement data CMD, the equipment code of the secondary battery manufacturing apparatus 100, the collection date and time of the measurement data, and the measurement items of the measurement data. The search parameters can be input into the client device 300. The search parameters can be transmitted to the server 240.

[0114] Next, an API request AR can be transmitted in P120. The API request AR of the server 230 can be generated based on the search parameters. The API request AR can be generated by the server 240 and transmitted to the server 230.

[0115] Subsequently, the coordinate-related measurement data CMD can be transmitted in P130. The coordinate-related measurement data CMD stored in the server 230 can be transmitted to the server 240. Alternatively, the coordinate-related measurement data CMD can be transmitted directly from the server 230 to the client device 300.

[0116] 1 to 4, the coordinate-related measurement data CMD and the coordinate-related inspection data CID can be displayed in P140. The server 240 can generate a URL (or schema) for displaying the coordinate-related measurement data CMD returned from the server 230 and the coordinate-related inspection data CID stored in the server 240's database on the client device 300. The URL (or schema) can be transmitted to the client device 300, and the client device 300 can access the coordinate-related measurement data CMD via the URL (or schema). As a result, the display device of the client device 300 can display the screen SCR of FIGS. 3 and 4.

[0117] The screen SCR may include first to fifth regions R1, R2, R3, R4, and R5. The arrangement of the first to fifth regions R1, R2, R3, R4, and R5 is for illustrative purposes only, and the first to fifth regions R1, R2, R3, R4, and R5 may be arranged differently from those shown in FIGS.

[0118] The first region R1 may include information about the secondary battery manufacturing apparatus 100 from which the intermediate roll map originates and the product (or semi-finished product) input into the secondary battery manufacturing apparatus 100. More specifically, the first region R1 may include information about the site (e.g., production facility) where the secondary battery manufacturing apparatus 100 from which the coordinate-related measurement data CMD and the stored coordinate-related inspection data CID originate is installed, the process performed by the secondary battery manufacturing apparatus 100, the product (or semi-finished product) produced by the secondary battery manufacturing apparatus 100, the name of the final product produced using the product (or semi-finished product) produced by the secondary battery manufacturing apparatus 100, the identification name (e.g., equipment ID) of the secondary battery manufacturing apparatus 100, the lot ID of the workpiece, semi-finished product, or finished product input into the current process, the lot ID of the workpiece, semi-finished product, or finished product produced by the current process, the number of operations for the lot in the current process, and whether half-slitting is applied. Here, half-slitting refers to dividing the electrode sheet ES horizontally after the coating process and before the roll pressing process.

[0119] The second region R2 may include a scroll and a scale indicating the position of the scroll. The intermediate roll map data D2 may be associated with coordinates, similar to the roll map. By moving the scroll, coordinate-related measurement data CMD and coordinate-related inspection data CID associated with the coordinates of the range where the scroll is located may be displayed. The scroll may be operated by clicking, dragging, scroll wheeling, swiping, etc., on the UI of the screen SCR. By operating the scroll, the first to eighth scenes S1, S2, S3, S4, S5, S6, S7, and S8 of the fifth region may display coordinate-related measurement data CMD and coordinate-related inspection data CID that match the coordinates indicated by the scroll.

[0120] The third region R3 shows the lateral configuration of the electrode sheet ES. More specifically, the third region R3 shows the coated lane, uncoated portion, and insulating layer of the electrode sheet ES. More specifically, color C1 represents the coated lane, color C2 represents the insulating layer on the coated lane (i.e., the overlapping region between the insulating layer and the coated lane), color C3 represents the insulating layer on the uncoated portion, and color C4 represents the uncoated portion.

[0121] The fourth region R4 can include tabs T1 and T2. Either tab T1 or tab T2 may be selected in the fourth region R4. When tab T1 is selected, the fifth region R5 includes first to fourth scenes S1, S2, S3, and S4, and when tab T2 is selected, the fifth region R5 includes fifth to eighth scenes.

[0122] The first scene S1 displays coordinate-related measurement data CMD of the electrode sheet ES, the second scene S2 displays coordinate-related inspection data CID representing a mismatch, and the third scene S3 and fourth scene S4 can display coordinate-related inspection data CID representing the width of the coated portion lane and uncoated portion of the electrode sheet ES.

[0123] More specifically, the first scene S1 can display coordinate-related measurement data CMD of the electrode sheet ES in a graph format. The coordinate-related measurement data CMD can be collected by scanning the electrode sheet ES laterally, and the electrode sheet ES can move in the travel direction while being scanned. Thus, the coordinate-related measurement data CMD can be collected in units of a length corresponding to one scan of the electrode sheet ES.

[0124] The second scene S2 can display the coordinate-related test data CID representing the mismatch in a graphical format. When a single applicator lane is formed on each of the upper and lower surfaces of the electrode sheet ES, the mismatch is a single measurement value, so the screen SCR and the fifth region R5 may not include a menu and tabs for selecting the mismatch.

[0125] The third scene S3 can display the coordinate-related inspection data CID representing the widths of the coated portion lanes and uncoated portions of the electrode sheet ES in a table format, and can include multiple columns. For example, the third scene S3 can include three columns corresponding to the coated portion lanes and uncoated portions on the upper surface of the electrode sheet ES and three columns corresponding to the coated portion lanes and uncoated portions on the lower surface of the electrode sheet ES.

[0126] The fourth scene S4 can display the coordinate-related inspection data CID, which indicates the width of the coated portion lane and the uncoated portion of the electrode sheet ES, in a graph format. The coated portion lane and the width of the uncoated portion of the electrode sheet ES selected in the third scene S3 can be displayed in the fourth scene S4.

[0127] Since the coordinate-related measurement data CMD is based on scanning measurements, the collection unit of the coordinate-related inspection data CID displayed by the second to eighth scenes S2, S3, S4, S5, S6, S7, and S8 may be different from the collection unit of the coordinate-related measurement data CMD.

[0128] The coordinate-related test data CID displayed in the second scene S2, the third scene S3, the fourth scene S4, and the fifth to eighth scenes S5, S6, S7, and S8 described later can correspond to the same part of the electrode sheet ES as the coordinate-related measurement data CMD of the first scene S1. That is, the coordinate-related test data CID and the coordinate-related measurement data CMD displayed simultaneously in the first to eighth scenes S1, S2, S3, S4, S5, S6, S7, and S8 can be collected from the same part of the electrode sheet ES.

[0129] For example, if coordinate-related measurement data CMD is collected from a 10 m electrode sheet ES and coordinate-related test data CID is collected from a 1 m electrode sheet ES, 10 data points of the coordinate-related test data CID can be displayed on the screen SCR of the client device 300 together with the coordinate-related measurement data CMD.

[0130] The fifth scene S5 and the sixth scene S6 display coordinate-related inspection data CID representing the insulation overlay width, and the seventh scene S7 and the eighth scene S8 display coordinate-related inspection data CID representing the insulation width.

[0131] More specifically, the fifth scene S5 may display the coordinate-related inspection data CID representing the insulating overlay width in a table format, such that the fifth scene S5 may include multiple columns, such as four columns corresponding to the insulating overlay widths on the top surface of the electrode sheet ES and four columns corresponding to the insulating overlay widths on the bottom surface of the electrode sheet ES.

[0132] The sixth scene S6 can display the coordinate-related inspection data CID, which indicates the insulating overlay width of the electrode sheet ES, in a graph format. The widths of the coated and uncoated lanes of the electrode sheet ES, which are selected in the fifth scene S5, can be displayed in the sixth scene S6.

[0133] The seventh scene S7 may display the coordinate-related inspection data CID representing the insulation width in a table format, and may include multiple columns, such as two columns corresponding to the insulation width of the top surface of the electrode sheet ES and two columns corresponding to the insulation width of the bottom surface of the electrode sheet ES.

[0134] The eighth scene S8 can display the coordinate-related inspection data CID representing the insulation width of the electrode sheet ES in a graph format. The widths of the coated and uncoated lanes of the electrode sheet ES selected in the seventh scene S7 can be displayed in the eighth scene S8.

[0135] (Third embodiment) FIG. 5 illustrates a role map generation system 11 according to an exemplary embodiment.

[0136] Referring to FIG. 5, the roll map generation system 11 may include a secondary battery manufacturing apparatus 101, a roll map generator 200, and a client device 300.

[0137] The role map generator 200 and the client device 300 are substantially the same as those described with reference to FIGS. 1 to 3, so a duplicated description thereof will be omitted.

[0138] The secondary battery manufacturing apparatus 101 may include an unwinder 111 , a rewinder 113 , a processing tool 115 , a first rotary encoder 121 , a second rotary encoder 123 , a measuring instrument 131 , an inspection instrument 133 , and a controller 140 .

[0139] 1. Thus, the controller 140 may be configured to generate coordinate data CD based on one of the unwinding amount signal UWAS and the winding amount signal WAS, transmit the coordinate data CD to the processor 131P of the measuring device 131, receive coordinate-related measurement data CMD and compressed measurement data PMD from the processor 131P, and transmit the coordinate-related measurement data CMD and compressed measurement data PMD to the first server 220 via the server 210. The controller 140 may be configured to generate signals for controlling the unwinder 111, the rewinder 113, and the processing tool 115.

[0140] (Fourth embodiment) FIG. 6 illustrates a role map generation system 12 according to an exemplary embodiment.

[0141] Referring to FIG. 6, the roll map generation system 12 may include a secondary battery manufacturing apparatus 100, a server 201, and a client device 300.

[0142] The secondary battery manufacturing apparatus 100 and the client device 300 are substantially the same as those described with reference to FIGS. 1 to 3, so a duplicated description thereof will be omitted.

[0143] The server 201 may be configured to perform the functions of the servers 210, 220, 230, 240, and 250 of Figure 1. Accordingly, the server 201 may be configured to receive the coordinate-related measurement data CMD and the compressed measurement data PMD, and to generate a roll map and an intermediate roll map.

[0144] Thus, the server 201 can be configured to retrieve the coordinate-related inspection data CID and coordinate-related measurement data CMD stored on the server 201 based on the search parameters transmitted from the client device 300, and transmit a URL (or schema) for displaying the coordinate-related inspection data CID and coordinate-related measurement data CMD to the client device 300.

[0145] The present invention has been described in more detail above with reference to the drawings and embodiments, etc. However, the configurations shown 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]

[0146] 10 Secondary battery manufacturing system 11,12 Role Map Generation System 100 Secondary battery manufacturing equipment 111 Unwinder 113 Rewinder 115 Processing equipment 121 1st rotary encoder 123 Second rotary encoder 131 Measuring Instruments 131P processor 131S Sensing unit 133 Inspection equipment 133P processor 133S Sensing unit 140 Controller 141 First Controller 143 Second Controller 200 Role Map Generator 201 Server 210,220,230,240,250 servers 300 client devices

Claims

1. transmitting an API call to a server that stores coordinate-related measurement data, the coordinate-related measurement data including measurement data collected based on measurements of an electrode sheet and coordinates associated with the measurement data; transmitting the coordinate-related measurement data in response to the API call; and displaying said coordinate related metrology data.

2. 10. The method of claim 1, wherein the coordinate-related measurement data is displayed in a graphical format.

3. The method of claim 1 , wherein the coordinate-related measurement data is transmitted in JSON format.

4. The method for displaying an intermediate roll map of claim 1 , wherein the coordinate-related measurement data represents a loading amount of electrode slurry on the electrode sheet.

5. The method of claim 1 , wherein the coordinate-related metrology data represents a thickness of an electrode slurry on the electrode sheet.

6. The coordinate-related measurement data is partially visualized; and The method of claim 1 , wherein the coordinate-related measurement data is displayed with scrolling to select a visualized portion of the coordinate-related measurement data.

7. displaying coordinate-related inspection data generated based on inspection of the electrode sheet and coordinate-related measurement data generated based on measurement of the electrode sheet; The method of displaying an intermediate roll map, wherein the coordinate-related inspection data is displayed in a tabular format.

8. 8. The method of claim 7, wherein the coordinate-related inspection data is further displayed in a graphical format.

9. The table includes a plurality of columns; and 9. The method of claim 8, wherein the portion of the coordinate-related inspection data displayed in the graphical format is determined by selection of the plurality of columns.

10. 8. The method for displaying an intermediate roll map of claim 7, wherein the coordinate-related inspection data represents a mismatch between an upper applicator lane on the upper surface of the electrode sheet and a lower applicator lane on the lower surface opposite the upper surface of the electrode sheet.

11. The method for displaying an intermediate roll map according to claim 7 , wherein the coordinate-related inspection data represents widths of coated and uncoated portions of the electrode sheet.

12. The method for displaying an intermediate roll map according to claim 7 , wherein the coordinate-related inspection data represents an overlay width between an application section lane of the electrode sheet and an insulating layer.

13. 8. The method for displaying an intermediate roll map of claim 7, wherein the coordinate-related inspection data represents a width of an insulating layer of the electroded sheet.

Images