Secondary battery manufacturing system and secondary battery manufacturing method

Abstract

Provided, according to example embodiments, is a secondary battery manufacturing method. The method comprises the steps of: loading coordinate-associated circular inspection data and coordinate-associated inspection data of an electrode sheet, the coordinate-associated circular inspection data comprising an image of a part of the electrode sheet and the coordinates of the part of the electrode sheet, and the coordinate-associated inspection data comprising a determination of a surface defect of the part of the electrode sheet and the coordinates of the part of the electrode sheet; and monitoring matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data.

Description

Secondary battery manufacturing system and method for manufacturing a secondary battery

[0001] The present invention relates to a secondary battery manufacturing system and a method for manufacturing a secondary battery. This application claims the benefit of Korean Application No. 10-2023-0133139, filed October 6, 2023, which is incorporated herein by reference in its entirety.

[0002] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. They are widely used as a power source for various wireless devices, including handsets, laptops, and cordless vacuum cleaners. Recently, improved energy density and economies of scale have dramatically reduced the per-unit manufacturing cost of secondary batteries. Furthermore, as the range of battery electric vehicles (BEVs) has increased to match that of fuel-powered vehicles, the primary use of secondary batteries is shifting from mobile devices to mobility.

[0003] Secondary batteries are manufactured through electrode processes, assembly processes, and activation processes. Among these, the electrode process is the most critical process in determining the yield and performance of the battery cell. The electrode process may include a coating process, a roll-pressing process, and a slitting process. In the coating process, active and insulating materials may be applied to the surface of the current collector. In the roll-pressing process, the electrode may be pressed by pressure rolls. The roll-pressing process may determine the density, performance, and surface quality of the electrode. In the slitting process, the electrode may be cut into multiple electrodes depending on the battery cell design.

[0004] The technical idea of ​​the present invention aims to solve a problem by providing a secondary battery manufacturing system with improved traceability and a method for manufacturing a secondary battery.

[0005] According to exemplary embodiments of the present invention for solving the above-described problem, a method for manufacturing a secondary battery is provided. The method includes the steps of loading coordinate-related inspection data of an electrode sheet and coordinate-related inspection data of a circular shape, wherein the coordinate-related inspection data includes an image of a portion of the electrode sheet and coordinates of the portion of the electrode sheet, and the coordinate-related inspection data includes determination of a surface defect of the portion of the electrode sheet and the coordinates of the portion of the electrode sheet; and the step of monitoring matching of the coordinate-related inspection data and the coordinate-related inspection data of the circular shape.

[0006] The step of monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the coordinates of the portion of the electrode sheet of the coordinate-associated circular inspection data with the coordinates of the portion of the electrode sheet of the coordinate-associated inspection data.

[0007] The step of monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes determining that the matching of the coordinate-associated circular inspection data and the coordinate-associated inspection data is normal when a difference between the coordinate of the portion of the electrode sheet of the coordinate-associated circular inspection data and the coordinate of the portion of the electrode sheet of the coordinate-associated inspection data is within a permissible error range.

[0008] The coordinate-associated circular inspection data and the coordinate-associated circular inspection data include an inspection device ID that directs an inspection device configured to inspect the portion of the electrode sheet, and the step of monitoring a match between the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the inspection device ID of the coordinate-associated circular inspection data with the inspection device ID of the coordinate-associated inspection data.

[0009] The inspection data of the coordinate-associated circle and the inspection data of the coordinate-associated circle include a defect sequence number indicating the sequence of defects in the electrode sheet, and the step of monitoring the matching of the inspection data of the coordinate-associated circle and the inspection data of the coordinate-associated circle includes comparing the defect sequence number of the inspection data of the coordinate-associated circle and the defect sequence number of the inspection data of the coordinate-associated circle.

[0010] The above defective number is separate for each inspection machine.

[0011] Monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data is triggered by loading the coordinate-associated inspection data and the coordinate-associated circular inspection data.

[0012] According to exemplary embodiments, a secondary battery manufacturing system is provided. The system includes a server configured to load coordinate-related inspection data of an electrode sheet and coordinate-related inspection data of a circular shape, and to monitor matching of the coordinate-related inspection data and the coordinate-related inspection data of the circular shape, wherein the coordinate-related inspection data includes an image of a portion of the electrode sheet and coordinates of the portion of the electrode sheet, and the coordinate-related inspection data includes determination of a surface defect of the portion of the electrode sheet and the coordinates of the portion of the electrode sheet.

[0013] A secondary battery manufacturing system characterized in that monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the coordinates of the portion of the electrode sheet of the coordinate-associated circular inspection data with the coordinates of the portion of the electrode sheet of the coordinate-associated inspection data.

[0014] Monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes determining that the matching of the coordinate-associated circular inspection data and the coordinate-associated inspection data is normal when a difference between the coordinate of the portion of the electrode sheet of the coordinate-associated circular inspection data and the coordinate of the portion of the electrode sheet of the coordinate-associated inspection data is within a permissible error range.

[0015] The coordinate-associated circular inspection data and the coordinate-associated circular inspection data include an inspection device ID that directs an inspection device configured to inspect the portion of the electrode sheet, and monitoring a matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the inspection device ID of the coordinate-associated circular inspection data with the inspection device ID of the coordinate-associated inspection data.

[0016] The inspection data of the coordinate-associated circular shape and the inspection data of the coordinate-associated circular shape include a defect number indicating the order of defects in the electrode sheet, and monitoring the matching of the inspection data of the coordinate-associated circular shape and the inspection data of the coordinate-associated circular shape includes comparing the defect number of the inspection data of the coordinate-associated circular shape and the defect number of the inspection data of the coordinate-associated circular shape.

[0017] Monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data is triggered by loading the coordinate-associated inspection data and the coordinate-associated circular inspection data.

[0018] According to exemplary embodiments of the present invention, the matching of the judgment values ​​of the inspection data with the original inspection data can be automatically monitored. Accordingly, the reliability and productivity of secondary battery manufacturing can be improved.

[0019] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0020] Figure 1 illustrates a secondary battery manufacturing system according to exemplary embodiments.

[0021] FIG. 2 is a flowchart illustrating a method for manufacturing a secondary battery according to exemplary embodiments.

[0022] Figure 3 shows the screen of the display device of the client device.

[0023] FIG. 4 illustrates a secondary battery manufacturing system according to other exemplary embodiments.

[0024] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0025] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0026] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0027] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0028]

[0029] (Example 1)

[0030] Figure 1 illustrates a secondary battery manufacturing system (10) according to exemplary embodiments.

[0031] Referring to FIG. 1, a secondary battery manufacturing system (10) may include a secondary battery manufacturing facility (100), a roll map generator (200), and a client device (300).

[0032] A secondary battery manufacturing facility (100) may be configured to perform a secondary battery manufacturing process. The secondary battery manufacturing facility (100) may include an unwinder (111), a rewinder (113), a processing mechanism (115), a first encoder (121), a second encoder (123), an inspector (130), a processor (135), a first controller (141), and a second controller (143).

[0033] The unwinder (111) may be configured to unwind the electrode sheet (ES) from the first electrode roll (ER1). The rewinder (113) may be configured to wind the electrode sheet (ES) onto the second electrode roll (ER2). Accordingly, the electrode sheet (ES) can move between the unwinder (111) and the rewinder (113).

[0034] A process (e.g., an electrode process) for manufacturing a secondary battery may be performed on an electrode sheet (ES). The electrode process is performed on an electrode sheet (ES) that is unwound from a first electrode roll (ER1) and rolled onto a second electrode roll (ER2), and thus the electrode process may be referred to as a roll-to-roll process.

[0035] The electrode sheet (ES) can be processed by a processing device (115). For example, the processing device (115) may include a coater, and electrode slurry may be coated on the electrode sheet (ES). As another example, the processing device (115) may include a pressure roll, and a roll pressing process may be performed on the electrode sheet (ES) coated with the electrode slurry. As another example, the processing device (115) may include a splicing die and a scrap port, and a portion of the electrode sheet (ES) may be scraped. As another example, the processing device may include a slitting knife, and the electrode sheet (ES) may be separated into a plurality of electrode sheets.

[0036] The coating process involves applying a coating material, such as electrode slurry, onto an electrode sheet (ES). The electrode slurry may include an electrode active material, a conductive agent, a binder, and a solvent. The electrode slurry can be provided by dissolving the electrode active material, conductive agent, binder, etc. in a solvent.

[0037] The roll pressing process involves passing an electrode sheet (ES) coated with electrode slurry between opposing press rolls. The press rolls can smooth the electrode surface and enhance the bonding strength between the active material and the current collector.

[0038] To increase the production capacity (e.g., GWh) per line of a secondary battery production facility, a coating process and a roll pressing process are performed on wide electrode sheets (ES). Subsequently, in a slitting process, the wide electrode sheets (ES) can be cut to the specifications of the battery cell.

[0039] The first encoder (121) may be configured to sense the amount of electrode sheets (ES) unwound from the first electrode roll (ER1) by the unwinder (111). Accordingly, the first encoder (121) may be configured to generate an unwound amount signal (UWAS) indicating the unwound amount of the electrode sheets (ES). The first encoder (121) may be configured to transmit the unwound amount signal (UWAS) to the first controller (141). The first controller (141) may be configured to collect input data based on the unwound amount signal (UWAS) of the electrode sheets (ES). The input data may indicate the amount of material (i.e., the first electrode roll (ER1)) input to the secondary battery manufacturing equipment (100) to manufacture the secondary battery.

[0040] The second encoder (123) may be configured to sense the amount of electrode sheet (ES) wound onto the second electrode roll (ER2) by the rewinder (113). Accordingly, the second encoder (123) may be configured to generate a winding amount signal (WAS) indicating the winding amount of the electrode sheet (ES). The second 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 exhaustion data based on the winding amount signal (WAS) of the electrode sheet (ES). The exhaustion data may indicate the production performance of the secondary battery manufacturing facility (100).

[0041] A portion of the electrode sheet (ES) may be scrapped in some cases, and accordingly, the amount of the electrode sheet (ES) wound by the unwinder (111) may be different from the amount of the electrode sheet (ES) wound by the rewinder (113). In addition, when the electrode sheet (ES) is stretched by pressure in a subsequent process such as a roll press, the amount of the electrode sheet (ES) wound by the unwinder (111) may be different from the amount of the electrode sheet (ES) wound by the rewinder (113).

[0042] As a non-limiting example, the first controller (141) and the second controller (143) may be a Programmable Logic Controller (PLC). A PLC is a specialized type of microprocessor-based controller that uses programmable memory to store commands and implement functions such as logic, sequencing, timing, counting, and arithmetic to control machines and processes. PLCs are easy to operate and program.

[0043] The first and second controllers (141, 143) may include a power supply, a CPU, an input interface, an output interface, a communication interface, and memory devices. The power supply may be configured to supply power to other elements of the first and second controllers (141, 143), such as the CPU, the input interface, the output interface, the communication interface, and the memory devices, for the operation of the first and second controllers (141, 143). The memory devices may include a Read Only Memory (ROM) configured to store a system program, such as an operating system, and a Random Access Memory (RAM) configured to store data, such as user programs and status information of input and 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 operation signals. The CPU may operate based on the system program and user programs stored in the memory devices. The CPU may be configured to write or read inspection data and measurement data to or from the data areas of memory devices based on system programs and user programs. Conditions or data of industrial devices and production processes may be transmitted to the CPU via an input module. Results processed by the CPU may be transmitted to an actuator via an output module. The communication interface may be configured to transmit and receive data between the first and second controllers (141, 143) or between the second controller (143) and the server (210).

[0044] However, the present invention is not limited thereto, and the first and second controllers (141, 143) may include any one of a simple controller, a complex processor such as a microprocessor, a CPU, a GPU, a processor configured by software, dedicated hardware, and firmware. The first and second controllers (141, 143) may also 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).

[0045] The first controller (141) may be configured to collect coordinate data (CD) of the electrode sheet (ES) based on either the winding amount signal (UWAS) or the winding amount signal (WAS) of the electrode sheet (ES). For example, the first controller (141) may determine a movement distance of the electrode sheet (ES) based on the winding amount signal (WAS) of the electrode sheet (ES), and accordingly, a position of a portion of the electrode sheet (ES) wound by the rewinder (113) at each point in time during which the coating process is performed may be determined within the electrode sheet (ES). Hereinafter, the technical idea of ​​the present invention will be described with reference to an embodiment in which the first controller (141) collects coordinate data (CD) based on the winding amount signal (WAS) of the electrode sheet (ES).

[0046] The coordinate data (CD) may include coordinates matching each part 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 driving direction (or the longitudinal direction of the electrode sheet (ES)), which is the direction in which the electrode sheet (ES) moves, but is not limited thereto. The coordinate may also be a two-dimensional quantity in the driving direction and the transverse direction of the electrode sheet (ES) (or the width direction of the electrode sheet (ES)).

[0047] The inspection device (130) may be configured to inspect the electrode sheet (ES) to collect inspection data (ID). The inspection device (130) may include a color sensor, an optical character reader (OCR), a barcode reader (BCR), a seam sensor, a reference point sensor, and a vision machine.

[0048] An example of inspection data (ID) is surface defect data of an electrode sheet (ES). The surface defect data may include the type of defect in the second electrode roll (ER2), the sequence number of the defect, and the generation date and time of the original inspection data (RID).

[0049] The sequence number of the defects can be updated on a lot-by-lot basis. For example, the sequence number of the first defect in the electrode sheet (ES) (or the first defect in the second electrode roll (ER2)) is 1 (or any symbol that can indicate the first defect), and the sequence number of the Nth defect is N (or any symbol that can indicate the Nth defect). For example, after the second electrode roll (ER2) has achieved the target winding length, the second electrode roll (ER2) can be cut and unloaded, and the remaining electrode sheet (ES) can be wound onto a new second electrode roll (ER2). The sequence number of the defects in the new second electrode roll (ER2) can start again from 1 (or any symbol that can indicate the first defect).

[0050] The sequence of defects may be different for each inspection machine. For example, the secondary battery manufacturing facility (100) may include one or more additional inspection machines, and the sequence of defects for each inspection machine and each of the one or more additional inspection machines may be different.

[0051] Types of surface defects may include pinhole defects, crater defects, line defects, crack defects, side ring defects, island defects, fold defects, wrinkle defects, puncture defects, and imprint defects.

[0052] Another example of inspection data (ID) is dimensional data of an electrode sheet (ES). The dimensional data may include a dimension of the electrode sheet (ES), a judgment value determined from the dimension of the electrode sheet (ES), and a date and time of generation of a prototype inspection data (RID) for collecting the dimensional data of the electrode sheet (ES). Here, the dimension of the electrode sheet (ES) may include a width of the electrode sheet (ES), a width of an insulating layer on the electrode sheet (ES), an overlay which is an overlapping width of a coating material (i.e., electrode slurry) on the electrode sheet (ES) and an insulating layer, and a mismatch indicating a misalignment of a maintenance lane on the lower surface of the electrode sheet (ES) and a maintenance lane on the upper surface.

[0053] The inspection data (ID) may include data of a seam of an electrode sheet (ES), data of reference points indicating a location of the electrode sheet (ES), data indicating a portion of the electrode sheet (ES) on which a sampling inspection was performed, data of a portion of the electrode sheet (ES) scheduled to be scrapped, and data of a scrapped portion of the electrode sheet (ES). Here, the reference points may be formed at predetermined intervals on the electrode sheet (ES), and the locations of other elements on the electrode sheet (ES) may be located based on the reference points.

[0054] The tester (130) may include a sensing unit (131) and a processor (133). The sensing unit (131) may be configured to sense a physical quantity of the electrode sheet (ES) to generate a measurement signal. For example, the sensing unit (131) may include a Time Delay and Integration (TDI) camera, a Complementary Metal Oxide Semiconductor (CMOS) image sensor, and a Time of Flight (TOF) sensor. The sensing unit (131) may also include an emitter and a receiver configured to perform measurements using non-destructive signals such as ultrasound, microwaves, terahertz waves, and infrared rays. The sensing unit (131) may also include analog and / or digital sensors such as a biosensor, a chemical sensor, a composition sensor, a current and / or power meter, an air quality sensor, a gas sensor, a Hall effect sensor, a brightness level sensor, and a light sensor. The sensing unit (131) may include a pressure sensor, a temperature sensor, an ultrasonic sensor, a proximity sensor, a door status sensor, a motion tracking sensor, a humidity sensor, a visible light and infrared sensor, and a camera.

[0055] The processor (133) may be configured to receive and process the circular inspection data (RID) generated by the sensing unit (131) to generate inspection data (ID). When the inspection machine (130) is a vision machine, the circular inspection data (RID) may be an image, and the processor (133) may include an algorithm for processing an image (or a portion of an image) of the electrode sheet (ES) to determine a judgment value of the inspection data (ID) and / or a model (e.g., an artificial neural network) trained to determine a judgment value based on an image of a portion of the electrode sheet (ES).

[0056] The generation of inspection data (ID) can be triggered by the judgment value of the electrode sheet (ES) determined by processing the original inspection data (RID). If the judgment value of the electrode sheet (ES) includes a defect, the processor (133) can be configured to generate inspection data (ID) and transmit the inspection data (ID) and the original inspection data (RID) to the processor (135).

[0057] The secondary battery manufacturing facility (100) may further include a measuring device configured to collect measurement data. The measurement data is circular data, and evaluation and judgment values ​​of a portion of the electrode sheet (ES) from which the measurement data was collected may be determined by processing the measurement data. As a non-limiting example, the measuring device may be any one of a web gauge and a thickness gauge from Thermofisher Scientific.

[0058] The measuring device may be configured to scan an electrode sheet (ES). During scanning of the electrode sheet (ES), the measuring device may move along the transverse direction of the electrode sheet (ES). During one scan, a sensing unit of the measuring device may move from one transverse end of the electrode sheet (ES) to the other transverse end of the electrode sheet (ES). While the measuring device performs transverse scanning, the electrode sheet (ES) may be moved in the travel direction by the unwinder (111) and the rewinder (113).

[0059] Measurement data may include numerical values ​​collected by scanning. Measurement data may include data on the loading amount of the coating material on the electrode sheet (ES) and data on the thickness of the coating material on the electrode sheet (ES). Here, the loading amount indicates the amount of the coating material loaded per unit area of ​​the electrode sheet (ES), and may be the areal density of the coating material.

[0060] The measuring device may include a sensing unit and a processor. The sensing unit may be configured to sense a physical quantity of the electrode sheet (ES) to generate a measurement signal. For example, the sensing unit of the measuring device may include any of the sensors described above with respect to the sensing unit (131).

[0061] A processor of a measuring device may be configured to receive a measurement signal sensed by a sensing unit. The processor may be configured to collect measurement data based on the measurement signal. The processor may be connected to the sensing unit by wire or wirelessly. The processor may be configured to correct 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 the aging of the equipment, the measurement values ​​of the measurement data may differ from the actual values. The processor may correct the measurement values ​​of the measurement data based on the offset measurement amount, thereby improving the reliability of the roll map generator (200) and the method for generating the roll map. The offset measurement amount may be determined based on information known about the sensing unit through a method such as a sample test.

[0062] The above-described measurement data and inspection data (ID) may be time-series data. The measurement data and inspection data (ID) may be temporally aligned. The measurement data and inspection data (ID) may be indexed by time. The measurement data may include measurement values ​​and time values ​​(or time values) matching the measurement values. The inspection data (ID) may include inspection values ​​and time values ​​(or time values) matching the inspection values. That is, the measurement data and inspection data may be stored based on the time at which the measurement and inspection were performed, and the measurement data and inspection data may be associated with time. The time values ​​of the measurement data and inspection data may have, for example, but are not limited to, a timestamp format.

[0063] For example, measurement data (e.g., loading amount data on an 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 thereto. The measurement values ​​may also be matched many-to-one with a single time stamp indicating a starting point of the measurement. As another example, defect data may have a value indicating a defect and a time value associated with the value indicating the defect. Here, indicating a defect includes at least one of the presence or absence of a defect and the type of defect.

[0064] The first controller (141) may be in operative communication with the first and second encoders (121), the measuring instrument, and additional measuring instruments and testers via a wired or wireless data network. The data network may be unidirectional or bidirectional. The data network may be implemented by a public network and / or a specialized network using a physical channel, WiFi, Bluetooth, and / or other frequency bands. The first and second encoders (121), the measuring instrument, and additional measuring instruments and testers may be configured to collect data from the equipment, workpieces, semi-finished products, and products within the secondary battery manufacturing facility (100), or to generate signals for collecting data. The first controller (141) may be configured to transmit coordinate data (CD) to the processor (133).

[0065] The processor (135) may be a kind of master PC. The processor (135) may be configured to receive inspection data (ID) and circular inspection data (RID) of the inspection device (130) and additional inspection devices, and report them to a higher level (e.g., servers (220, 240)). The processor (135) may be configured to match the inspection data (ID) and circular inspection data (RID) with coordinate data (CD) when the inspection data (ID) is surface defect data and the judgment value of the inspection data (ID) indicates that there is a surface defect.

[0066] According to exemplary embodiments, the processor (135) may be configured to calibrate the coordinate data (CD) based on the position of the sensing unit (131). More specifically, the measuring device may be configured to correlate the coordinates of the coordinate data (CD) with the measurement values ​​of the measurement data by calibrating the coordinate data (CD) based on the offset length (OD).

[0067] The inspection device (130) can collect measurement data of a portion corresponding to (e.g., overlapping) the sensing unit (131), and coordinate data (CD) is collected by a second encoder (123) spaced apart from the sensing unit (131) as described above. Accordingly, the portion of the electrode sheet (ES) corresponding to the coordinate data (CD) collected at the same point in time and the portion of the electrode sheet (ES) corresponding to the inspection data (ID) and the circular inspection data (RID) may be different.

[0068] According to exemplary embodiments, coordinate-related inspection data (CID) may be provided by correcting coordinate data (CD) collected at the same time as inspection data (ID) based on an offset length (OD) and associating the corrected coordinate data (CD) with the inspection data (ID). The coordinate-related inspection data (CID) may include a site ID indicating a location of a secondary battery manufacturing facility (100), a process ID indicating a process performed on an electrode sheet (ES), an inspector name (or ID) for identifying a facility ID inspector (130), a lot number of the electrode sheet (ES) (or a lot number of the second electrode roll (ER2)), a type of defect, a sequence number of the defect, and the date and time of generation of the original inspection data (RID).

[0069] A plurality of guide rolls may be interposed between the sensing unit (131) and the rewinder (113) to define a movement path of the electrode sheet (ES). Accordingly, the offset length (OD) 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 (131) and the rewinder (113). The offset length (OD) may be equal to the straight-line distance between the sensing unit (131) and the rewinder (113), or may be greater than the straight-line distance between the sensing unit (131) and the rewinder (113).

[0070] According to exemplary embodiments, the processor (135) may be configured to match the circular inspection data (RID) with the coordinate data (CD) to provide coordinate-related circular inspection data (CRID). The coordinate-related circular inspection data (CRID) may include a site ID, a process ID, an inspector name (or ID), a lot number of the electrode sheet (ES) (or a lot number of the second electrode roll (ER2)), a type of defect, a sequence number of the defect, a creation date and time of the circular inspection data (RID), and the circular inspection data (RID).

[0071] A processor of the measuring device may be configured to generate coordinate-associated measurement data based on coordinate data (CD) and the measurement data. The processor (131P) may be configured to associate the measurement data with the coordinate data (CD) to generate coordinate-associated measurement data. Generally, the measurement data may be processed based on a trigger point. Examples of processing the measurement data may include storing the measurement data, manipulating the measurement data (e.g., generating coordinate-associated measurement data), and transmitting the measurement data. As a non-limiting example, the trigger point for processing the measurement data may be the completion of scanning. The coordinate-associated measurement data may include representative values ​​of the circular measurement data and start and end coordinates of a section of the electrode sheet (ES) corresponding thereto. The coordinate-associated measurement data may further include a time stamp indicating the date and time of collection of the circular measurement data, a meter ID, and a facility ID.

[0072] Measurement data can be processed in a set manner so that judgment values ​​of multiple sections of the electrode sheet (ES) can be determined. When a measured amount of a coating material on the electrode sheet (ES) (e.g., a loading amount on the electrode sheet (ES) or a thickness of the electrode sheet (ES)) is within a set range including an upper limit and a lower limit, a corresponding portion of the electrode sheet (ES) can be determined as a good product. When a measured amount of a coating material on the electrode sheet (ES) (e.g., a loading amount on the electrode sheet (ES) or a thickness of the electrode sheet (ES)) is less than the lower limit or greater than the upper limit, a corresponding portion of the electrode sheet (ES) can be determined as a defective product.

[0073] As another example, a measurement value (or representative value) within a first range may be determined as normal, a measurement value (or representative value) within a second range that is greater than the first range may be determined as excessive, a measurement value (or representative value) within a third range that is greater than the second range may be determined as very excessive, a measurement value (or representative value) within a fourth range that is smaller than the first range may be determined as insufficient, and a measurement value (or representative value) within a fifth range that is smaller than the fourth range may be determined as very insufficient.

[0074] Here, if the lower limit of the second range is greater than or equal to the upper limit of the first range, the second range is greater than the first range. Similarly, if the upper limit of the fourth range is less than or equal to the lower limit of the first range, the fourth range is less than the first range.

[0075] The processor (135) may be configured to transmit coordinate-associated inspection data (CID) to the first controller (141). The first controller (141) may be configured to transmit the coordinate-associated inspection data (CID) to the second controller (143). In another example, the first controller (141) may receive inspection data (ID) from the processor (135), and the first controller (141) may be configured to generate (or collect) coordinate-associated inspection data (CID) based on the inspection data (ID) and the coordinate data (CD).

[0076] The first controller (141) may be configured to transmit coordinate-associated inspection data (CID) to the second controller (143). The second controller (143) may be configured to transmit compressed measurement data and coordinate-associated inspection data (CID) to the roll map generator (200). However, the present invention is not limited thereto, and the first controller (141) may also directly transmit the compressed measurement data and coordinate-associated inspection data (CID) to the roll map generator (200).

[0077] The second controller (143) may be configured to control the operation of the unwinder (111), the rewinder (113), and the processing mechanism (115). The second controller (143) may be configured to generate signals for operation and stop of the unwinder (111), the rewinder (113), and the processing mechanism (115). The signals for operation and stop of the unwinder (111), the rewinder (113), and the processing mechanism (115) may be generated based on electrode specification data (ESD), compressed measurement data, inspection data (ID), and additional inspection signals and measurement signals.

[0078] The processor (135) may be configured to transmit coordinate-related circular inspection data (CRID) to the server (230). Communication between the server (230) and the processor (135) may be, but is not limited to, a message transmission method.

[0079] The roll map generator (200) may include servers (210, 220, 230, 240, 250). The servers (210, 220, 230, 240, 250) may be separate entities that perform various functions, including generating roll maps and intermediate roll maps, storing roll maps and intermediate roll maps, storing coordinate-associated circular inspection data (CRID), or relaying communication between the servers (210, 220, 230, 240, 250). Unlike the illustration in FIG. 1, some of the servers (210, 220, 230, 240, 250) may be integrated. For example, server (220) and server (240) may be integrated into one server, or servers (220, 240, 250) may be integrated into one server.

[0080] The roll map generator (200) may be configured to generate a roll map including data regarding the electrode sheet (ES). The roll map may represent the electrode sheet (ES) based on coordinates indicating a location on the electrode sheet (ES). A process for manufacturing a secondary battery may be performed on the electrode sheet (ES), as described above. The roll map may represent a history of the process performed on the electrode sheet (ES) and include data associated with the coordinates. Accordingly, the roll map enables feedback, feedforward, and tracking of the manufacturing process of the secondary battery, which will be described later.

[0081] A roll map may include event data representing events in a roll-to-roll process of an electrode sheet (ES). Event data (e.g., inspection data (ID)) typically occurs as the process progresses, and thus is time-series data. Accordingly, data regarding process events may include values ​​representing the events and time values ​​corresponding to the values. Time-series data may be temporally ordered. Temporal ordering is a key characteristic of time-series data, which organizes events in the order in which they occur and arrive for processing. That is, time-series data may be stored based on the time at which an event occurs (i.e., the time at which an inspection or measurement is performed, or a process action is performed), and events may be associated with time values.

[0082] The manufacturing of secondary batteries involves a series of different processes, with the leading process influencing the following process. Feedforward refers to the correction of the following process based on data generated from the results of the preceding process. However, if the time series data of the preceding process does not directly match the real-world workpieces, semi-finished products, and finished products, it is difficult to reflect the time series data of the preceding process in the following process. Here, the workpiece refers to an article provided as a result of each process, such as the electrode sheet (ES) that has undergone the coating process, roll pressing process, and slitting process illustrated in Fig. 1. The semi-finished product may refer to one of separators, electrodes, and their assemblies cut through a notching process. The semi-finished product may also be a structure comprising a housing and an electrode assembly embedded in the housing (in some cases, the structure further includes an electrolyte). The product refers to an article that has been processed to be operable as a secondary battery through an activation process. The definitions of work-pieces, semi-finished products and finished products set forth above are only one aspect of these and do not exclude the usual definitions of these.

[0083] For feedforward, time-series data must be associated with the positions of real-world workpieces, parts, semi-finished products, and finished products. In a roll map, time-series data, such as measurement data, can be associated with coordinate data (CD) based on the displacement of the electrode sheet (ES) (i.e., either the roll amount or the unwind amount). The roll map can associate time-series data with coordinate data, which includes coordinates representing the positions of real-world workpieces, parts, semi-finished products, and finished products. Accordingly, the creation of a roll map and feedforward based on the roll map can quantify and objectify aspects of the process previously dependent on the operator's discretion, thereby improving production efficiency and quality.

[0084] The roll map can be generated on a lot basis. The electrode sheet (ES) is wound onto the second electrode roll (ER2), and after reaching the winding amount target, the second electrode roll (ER2) can be cut and separated from the electrode sheet (ES) connected to the first electrode roll (ER1). A lot is a production unit of a roll-to-roll process, and the second electrode roll (ER2) separated from the electrode sheet (ES) is an example of a lot. Accordingly, the server (220) can be configured to store the roll map of the previous process. The roll map of the previous process can correspond to the first electrode roll (ER1). In addition, the server (220) can be configured to generate and store a roll map of the current process. The roll map of the current process can correspond to the second electrode roll (ER2).

[0085] Additionally, the roll map of a preceding lot can be used to improve the process for subsequent lots, an action referred to as process feedback. Process feedback using a roll map can include identifying process conditions and parameters that led to problems and defects based on the data contained in the roll map.

[0086] Furthermore, the roll map, as described below, is cumulatively generated for work-pieces, parts, semi-finished products, and finished products of unit processes, thereby enabling tracking of the process history of shipped products (e.g., battery cells, battery modules, or battery packs). For example, a battery cell may include a cell ID formed on an electrode assembly or a case. The cell ID may include lot numbers and coordinate information of electrodes and separators included in the battery cell. In other words, the cell ID may be associated with a roll map of the electrodes and separators included in the battery cell. Accordingly, when an event such as a quality issue occurs in a battery cell that has already been shipped, the history of collective data of the manufacturing of the corresponding battery cell can be retrieved based on the cell ID.

[0087] Coordinate-related measurement data and coordinate-related inspection data (CID) can be transmitted to the server (220) via the server (210). The server (210) may be a communication server. The server (210) may be, for example, 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 facility and the server (220) for manufacturing management. The server (210) may also be implemented in hardware as described below. The language and protocol of the server (220) may be different from the language and protocol of the controller (143). For example, the language of the server (220) may be SQL, and the language of the controller (143) may be a ladder diagram.

[0088] The server (210) may be configured to convert the electrode specification data (ESD) transmitted from the server (220) into the language of the controller (143). In addition, the server (210) may be configured to convert the coordinate-related measurement data and the coordinate-related inspection data (CID) into the language of the server (220) and record the coordinate-related measurement data and the coordinate-related inspection data (CID) in the database of the server (220). The coordinate-related measurement data and the coordinate-related inspection data (CID) may be stored in the database of the server (220) in JSON format.

[0089] Electrode specification data (ESD) may include model information and recipes of electrode sheets (ES). Electrode specification data (ESD) may include all matters related to processing of electrode sheets (ES), such as the number of lots being processed in the current process, the number of maintenance lanes formed on the electrode sheets (ES), process conditions including temperature, humidity, and pressure, the moving speed of the electrode sheets (ES), the discharge amount of the coating die, and the pressure of the pressurizing rolls.

[0090] In order to control the process, a communication line may be installed between the second controller (143) and the server (220) via the server (210) and connecting the second controller (143) and the server (220). Accordingly, data transmission through the second controller (143) can reduce resources required for installation of the communication line and improve data processing and management efficiency compared to the case where the first and second encoders (121, 123) and the measuring device directly transmit the unwinding amount signal (UWS), the winding amount signal (WS) and the measurement signal to the first server (220) and the case where the first controller (141) directly transmits the coordinate-related measurement data to the server (220).

[0091] The server (220) may be configured to generate a roll map. The roll map may include data regarding specifications of the lot. The specifications of the lot may include, for example, a lot number, the length of the rolled electrode sheet (ES), the width of the electrode sheet (ES), and the materials and compositions used in processing the electrode sheet (ES).

[0092] According to exemplary embodiments, the server (220) may be a data processing system that supports various activities necessary for managing the manufacturing of secondary batteries, such as work schedule management, work instructions, quality control, and work performance aggregation. The server (220) may be, for example, a Manufacturing Execution System (MES). The server (220) may be configured to input, process, output, and communicate data necessary for electrode manufacturing processes, such as a coating process, a roll pressing process, and a slitting process.

[0093] The server (230) may be configured to store coordinate-related circular inspection data (CRID). By storing coordinate-related circular inspection data (CRID), additional analysis of the process based on the inspection results of the inspector (130) and insight into process improvement may be provided.

[0094] The server (240) may be configured to store circular measurement data. The server (240) may be configured to load coordinate-related inspection data (CID) from the server (220) based on a request (RQ) from a client device (300) and to load coordinate-related inspection data (CRID) of the circular shape from the server (230). The server (240) may be configured to generate an API request (AR) for loading coordinate-related inspection data (CID) and coordinate-related inspection data (CRID) of the circular shape based on a request (RQ) from a client device (300).

[0095] More specifically, a request (RQ) can be generated by inputting search parameters for generating an API request (AR). The search parameters can include a site name (or site ID) indicating a site where equipment is installed, a process name (or process ID) indicating a process (e.g., one of coating, roll pressing, slitting, and laminating and stacking), a lot ID of an electrode sheet (ES) (or a second electrode roll (ER2)), a project name (or project ID) indicating a project (or product) to be produced, and a production period.

[0096] The server (240) may be configured to transmit an API request (AR) to the server (220) and the server (230). The server (220) may be configured to transmit coordinate-related inspection data (CID) to the server (240) in response to the API request (AR) of the server (240). The server (230) may be configured to transmit coordinate-related circular inspection data (CRID) to the server (240) in response to the API request (AR) of the server (240).

[0097] The server (240) may be configured to compare and match coordinate-associated inspection data (CID) and coordinate-associated circular inspection data (CRID). The server (240) may be configured to transmit a Uniform Resource Locator (URL) (or schema) containing source code for displaying the coordinate-associated inspection data (CID) and the coordinate-associated circular inspection data (CRID) to the client device (300).

[0098] The client device (300) can access the source code for displaying coordinate-associated inspection data (CID) and coordinate-associated circular inspection data (CRID) through a URL (or schema), and accordingly, the client device (300) can display comparison and matching of the coordinate-associated inspection data (CID) and coordinate-associated circular inspection data (CRID).

[0099] The server (240) may also be configured to store and process coordinate-related inspection data (CID) of the electrode sheet (ES). The server (240) may continuously monitor the processing of the electrode sheet (ES) based on the inspection data, thereby managing the quality of the processing of the electrode sheet (ES). According to exemplary embodiments, the server (240) may be a Statistical Process Controller (SPC). By collecting and analyzing manufacturing data in near real-time, the server (240) may promptly identify problem conditions and provide alerts to operators before potential problems occur.

[0100] The server (250) may be configured to store data of the servers (220, 230, 240). The server (250) may be configured to store coordinate-related inspection data (CID) and coordinate-related circular inspection data (RCID). If the server (220) is an MES and the server (240) is an SPC, it may not be suitable for long-term storage of the coordinate-related inspection data (CID) and coordinate-related circular inspection data (RCID). The server (250) may be, for example, a data warehouse, and may store coordinate-related measurement data (CMD) and coordinate-related measurement data for a long period of time based on the quality assurance period of the product, etc. Accordingly, tracking of the manufacturing process according to the product life cycle may be provided.

[0101] The client device (300) can transmit a request (RQ) to the server (250) to query the comparison and matching of coordinate-associated inspection data (CID) and coordinate-associated circular inspection data (CRID). The server (250) can be configured to retrieve the coordinate-associated inspection data (CID) and the coordinate-associated circular inspection data (CRID) in response to the request of the client device (300). The server (250) can be configured to compare and match the coordinate-associated inspection data (CID) and the coordinate-associated circular inspection data (CRID). The server (250) can be configured to transmit a Uniform Resource Locator (URL) (or schema) including source code for displaying the coordinate-associated inspection data (CID) and the coordinate-associated circular inspection data (CRID) to the client device (300).

[0102] Each of the servers (240, 250) may be configured to generate an intermediate roll map based on a request from a client device (300). The intermediate roll map provides a match between coordinate-related circular inspection data (CRID) and coordinate-related inspection data (CID). According to exemplary embodiments, as described below, the match between the coordinate-related circular inspection data (CRID) and the coordinate-related inspection data (CID) may be automatically monitored, thereby improving the reliability of the intermediate roll map.

[0103] The processors (133, 135) and the servers (210, 220, 230, 240, 250) may be implemented using hardware, firmware, software, or a combination thereof. For example, the processors (133, 135) and the servers (210, 220, 230, 240, 250) may include computing devices such as workstation computers, desktop computers, laptop computers, tablet computers, etc. The processors (133, 135) and the servers (210, 220, 230, 240, 250) may include any one of simple controllers, complex processors such as microprocessors, CPUs, GPUs, processors configured by software, dedicated hardware, and firmware. The processors (133, 135), the processors and the 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).

[0104] Since the server (220) stores and processes a lot of data for general manufacturing management other than the roll map, the roll map stored in the server (220) may include simplified compressed measurement data instead of coordinate-related measurement data (CMD) including circular measurement data. The server (220) may provide the roll map in response to a request from a client device (300). The client device (300) may display data (d2) of an intermediate roll map as illustrated in FIGS. 3 and 4.

[0105] The client device (300) may be any device for communicating with the roll map generator (200), such as a workstation computer, a notebook, a laptop, a desktop, a tablet, a mobile device such as a smart phone, a wearable device, etc. The client device (300) may be configured to generate a request (RQ) for loading coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID). The client device (300) may be configured to transmit the requests (RQ) to the roll map generator (200). The client device (300) may include input tools for inputting the requests (RQ) and a display device for displaying the screen (SCR) of FIG. 3.

[0106] Coordinate-related inspection data (CID) provides information on the occurrence of defects, but it is difficult to gain additional insight into defect analysis from CID. Because coordinate-related circular inspection data (CRID) contains information on the actual nature of defects, analysis of coordinate-related circular inspection data (CRID) is a key element in improving yield and productivity in secondary battery manufacturing. According to exemplary embodiments, by automatically verifying the matching of coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID), accessibility to issues arising in secondary battery manufacturing can be improved.

[0107] The servers (210, 220, 230, 240, 250) may include physical servers or cloud servers. The servers (210, 220, 230, 240, 250) may provide data and analysis results to workers through various frameworks. The framework may include a protocol that supports 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, 230). The protocol that supports the data transmission may use HTML, JavaScript, and / or JSON.

[0108] Servers (210, 220, 230, 240, 250) may include various Application Programming Interfaces (APIs) for storing data in databases and other data management tools. The APIs may also be used to retrieve data from databases in various data management systems. The data management systems may provide access to the databases, pull data from the databases, retrieve data, and generate metrics. Metrics are tools for visualizing data. Metrics include time-series measurements and can be used for monitoring applications and generating status alerts.

[0109] According to some embodiments, the operations of the processors (133, 135) and the servers (210, 220, 230, 240, 250) may be implemented as instructions stored on a machine-readable medium that can be read and executed by one or more processors. Here, the machine-readable medium may include any mechanism for storing and / or transmitting information in a form readable by a machine (e.g., a computing device). For example, the machine-readable medium may include a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk storage medium, an optical storage medium, a flash memory, an electrical, optical, acoustical or other form of radio signal (e.g., a carrier wave, an infrared signal, a digital signal, etc.), and any other signal.

[0110] The processors (133, 135) and servers (210, 220, 230, 240, 250) may be configured with firmware, software, routines, and instructions for performing the operations described above or any of the processes described below. For example, the processors (133, 135) and servers (210, 220, 230, 240, 250) may be instantiated in memory.

[0111] However, this is for convenience of explanation, and the operations of the processors (133, 135) and servers (210, 220, 230, 240, 250) described above may also be caused by other devices executing computing devices, distributed computing devices, processors, firmware, software, routines and instructions, etc.

[0112] The secondary battery manufacturing system (10) can implement a plug-in architecture with an API for data acquisition to provide plug-and-play connectivity for measuring instruments, testers (130), and additional measuring instruments and testers. This allows resources from a specific process step and site to be easily transferred to other processes and sites, or new resources to be easily introduced to each process step and site.

[0113] The data network between elements of the secondary battery manufacturing system (10) may include various types of communication channels, including unidirectional, bidirectional wired, and wireless communications. For example, the data network may include an industrial protocol network such as OPC, Modbus, ProfiNet, etc. The communication channel may be a dedicated conduit communication such as USB (Universal Serial Bus), IEEE 802 (Ethernet), IEEE 1394 (FireWire), or other high-speed data communication standards.

[0114] In some embodiments, the roll map generator (200) may further include a manual input system that allows a worker to input manufacturing data. The roll map generator (200) may also allow for computer-based input of manufacturing data, such as by a worker using an input tool or by scraping an Excel file.

[0115] The architecture configured to generate roll maps and intermediate roll maps can be implemented by simply adding a first controller (141) to the essential elements of a modern process management system. That is, the system according to exemplary embodiments can utilize resources of existing manufacturing sites and reduce additional capital expenditures. Furthermore, by applying the same architecture to newly constructed manufacturing facilities as to existing manufacturing facilities, the reliability of secondary battery manufacturing, the discovery / improvement of problematic processes, and the introduction of new processes can be improved.

[0116]

[0117] (Example 2)

[0118] FIG. 2 is a flowchart illustrating a method for manufacturing a secondary battery according to exemplary embodiments.

[0119] Referring to FIGS. 1 and 2, at P110, coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) can be collected. The collection of coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) can be triggered by inspection data (ID) indicating a surface defect on the electrode sheet (ES). When the inspection data (ID) determined by processing the circular inspection data (RID) indicates that there is a surface defect, the processor (133) can transmit the circular inspection data (RID) and the inspection data (ID) to the processor (135). The processor (135) can provide the coordinate-related inspection data (CID) and the coordinate-related circular inspection data (CRID) by matching the circular inspection data (RID) and the coordinate data (CD).

[0120] Next, coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) can be stored in P120. The coordinate-related inspection data (CID) can be stored in the server (220), and the coordinate-related circular inspection data (CRID) can be stored in the server (230).

[0121] Figure 3 shows a screen (SCR) of a display device of a client device (300).

[0122] Referring to FIGS. 1 to 3, the matching of coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) can be monitored at P130. Monitoring the matching of coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) can include comparing the inspector ID, lot ID, defect number, and coordinates of the coordinate-related inspection data (CID) and the coordinate-related circular inspection data (CRID) derived from the same part of the electrode sheet (ES) (i.e., derived from the same circular inspection data (RID)). Here, the matching of the coordinates includes consideration of the tolerance. That is, if the difference between the coordinates of the coordinate-related inspection data (CID) and the coordinates of the coordinate-related circular inspection data (CRID) is within the range of the tolerance, the coordinates of the coordinate-related inspection data (CID) and the coordinates of the coordinate-related circular inspection data (CRID) can be determined to match.

[0123] The screen (SCR) may include first to fourth regions (R1, R2, R3, R4). As shown in FIG. 3, the first to fourth regions may be displayed simultaneously within the screen (SCR), but are not limited thereto.

[0124] A user of the client device (300) (e.g., a worker or engineer) can input search parameters into the first area (R1). The search parameters may include a site ID, process ID, facility ID, lot ID, and project name.

[0125] The second region (R2) lists coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) retrieved by search parameters, classified by lot IDs. When a user selects any one of the lists (any one of the lot IDs) on the second region (R2), coordinate-related inspection data (CID) derived from the electrode sheet (ES) (or the second electrode roll (ER2)) corresponding to the selected lot ID may be displayed in the third region (R3), and coordinate-related circular inspection data (CRID) derived from the electrode sheet (ES) (or the second electrode roll (ER2)) corresponding to the selected lot ID may be displayed in the fourth region (R4).

[0126] Monitoring of matching of coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) can be triggered by inputting search parameters and selecting a lot ID. Matching of coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) can be monitored by server (230) or server (250). Server (230) and server (250) can display matching of coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID).

[0127] The server (230) and the server (250) may be configured to determine whether the inspector ID, the defective number, and the coordinates of the coordinate-associated inspection data (CID) and the coordinate-associated circular inspection data (CRID) match or mismatch. The server (230) and the server (250) may be configured to display the inspector ID, the defective number, and the coordinates of the coordinate-associated inspection data (CID) and the coordinate-associated circular inspection data (CRID) to determine whether the inspector ID, the defective number, and the coordinates match or mismatch.

[0128]

[0129] (Example 3)

[0130] Figure 4 illustrates a secondary battery manufacturing system (11) according to other exemplary embodiments.

[0131] Referring to FIG. 4, the secondary battery manufacturing system (11) may include a secondary battery manufacturing facility (101), a roll map generator (200), and a client device (300).

[0132] A secondary battery manufacturing facility (101) may be configured to perform a secondary battery manufacturing process. The secondary battery manufacturing facility (101) may include an unwinder (111), a rewinder (113), a processing mechanism (115), a first encoder (121), a second encoder (123), an inspector (130), a first controller (141), and a second controller (143).

[0133] That is, the secondary battery manufacturing facility (101) may not include the processor (135) of FIG. 1. Accordingly, the processor (133) of the inspection device (130) may be configured to collect coordinate-related inspection data (CID) and coordinate-related circular inspection data (CRID) based on the coordinate data (CD) and circular inspection data (RID).

[0134]

[0135] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

Claims

1. A step of loading coordinate-related inspection data of an electrode sheet and coordinate-related circular inspection data, wherein the coordinate-related circular inspection data includes an image of a portion of the electrode sheet and coordinates of the portion of the electrode sheet, and the coordinate-related inspection data includes a determination of a surface defect of the portion of the electrode sheet and the coordinates of the portion of the electrode sheet; and A method for manufacturing a secondary battery, comprising a step of monitoring matching of the coordinate-related inspection data and the coordinate-related circular inspection data.

2. In paragraph 1, A method for manufacturing a secondary battery, characterized in that the step of monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the coordinates of the portion of the electrode sheet of the coordinate-associated circular inspection data with the coordinates of the portion of the electrode sheet of the coordinate-associated inspection data.

3. In paragraph 1, A method for manufacturing a secondary battery, characterized in that the step of monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes determining that the matching of the coordinate-associated circular inspection data and the coordinate-associated inspection data is normal when the difference between the coordinate of the portion of the electrode sheet of the coordinate-associated circular inspection data and the coordinate of the portion of the electrode sheet of the coordinate-associated inspection data is within a tolerance range.

4. In paragraph 1, The coordinate-related circular inspection data and the coordinate-related inspection data include an inspection machine ID that directs an inspection machine configured to inspect the portion of the electrode sheet, and A method for manufacturing a secondary battery, characterized in that the step of monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the inspection machine ID of the coordinate-associated circular inspection data with the inspection machine ID of the coordinate-associated inspection data.

5. In paragraph 1, The above coordinate-related circular inspection data and the above coordinate-related inspection data include a defect sequence number indicating the order of defects within the electrode sheet, and A method for manufacturing a secondary battery, characterized in that the step of monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the defective order number of the coordinate-associated circular inspection data with the defective order number of the coordinate-associated inspection data.

6. In paragraph 5, A method for manufacturing a secondary battery, characterized in that the above defective serial number is separate for each inspection machine.

7. In paragraph 1, A method for manufacturing a secondary battery, characterized in that monitoring the matching of the coordinate-related inspection data and the coordinate-related circular inspection data is triggered by loading the coordinate-related inspection data and the coordinate-related circular inspection data.

8. A server configured to load coordinate-related inspection data of an electrode sheet and coordinate-related inspection data of a circular shape, and configured to monitor matching of the coordinate-related inspection data and the coordinate-related inspection data of the circular shape, The inspection data of the above coordinate-related circle includes an image of a portion of the electrode sheet and coordinates of the portion of the electrode sheet, and A secondary battery manufacturing system characterized in that the above coordinate-related inspection data includes a determination of a surface defect of the above portion of the electrode sheet and the above coordinates of the above portion of the electrode sheet.

9. In paragraph 8, A secondary battery manufacturing system characterized in that monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the coordinates of the portion of the electrode sheet of the coordinate-associated circular inspection data with the coordinates of the portion of the electrode sheet of the coordinate-associated inspection data.

10. In paragraph 8, A secondary battery manufacturing system characterized in that monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes determining that the matching of the coordinate-associated circular inspection data and the coordinate-associated inspection data is normal when the difference between the coordinate of the portion of the electrode sheet of the coordinate-associated circular inspection data and the coordinate of the portion of the electrode sheet of the coordinate-associated inspection data is within a tolerance range.

11. In paragraph 8, The coordinate-related circular inspection data and the coordinate-related inspection data include an inspection machine ID that directs an inspection machine configured to inspect the portion of the electrode sheet, and A secondary battery manufacturing system, characterized in that monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the inspection machine ID of the coordinate-associated circular inspection data with the inspection machine ID of the coordinate-associated inspection data.

12. In paragraph 8, The above coordinate-related circular inspection data and the above coordinate-related inspection data include a defect sequence number indicating the order of defects within the electrode sheet, and A secondary battery manufacturing system, characterized in that monitoring the matching of the coordinate-associated inspection data and the coordinate-associated circular inspection data includes comparing the defective order number of the coordinate-associated circular inspection data with the defective order number of the coordinate-associated inspection data.

13. In paragraph 8, A secondary battery manufacturing system, characterized in that monitoring the matching of the coordinate-related inspection data and the coordinate-related circular inspection data is triggered by loading the coordinate-related inspection data and the coordinate-related circular inspection data.

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