Secondary battery manufacturing system

Abstract

According to an exemplary embodiment of the present invention, a secondary battery manufacturing system is provided. The system includes a first controller configured to collect coordinate data, and a measuring instrument configured to collect measurement data of the electrode sheet, wherein the measuring instrument is configured to associate the coordinate data with the measurement data to generate coordinate-related measurement data.

Description

Technical Field

[0001] The present invention relates to a secondary battery manufacturing system configured to generate a roll map representing a lot, which is a unit of a wound electrode sheet. This application claims the benefit of Korean Application No. 10-2023-0078310 filed on Jun. 19, 2023 and Korean Application No. 10-2023-0097121 filed on Jul. 26, 2023, which are hereby incorporated by reference in their entirety.

Background Art

[0002] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries are widely used as an energy source for various wireless devices such as handsets, notebook computers, and wireless vacuum cleaners. In recent years, due to improvements in energy density and economies of scale, the manufacturing cost per unit capacity of secondary batteries has decreased epochally, and as the cruising range of BEVs (battery electric vehicles) has increased to a level equivalent to that of fuel vehicles, the main application of secondary batteries has been shifting from mobile devices to mobility.

[0003] Secondary batteries are manufactured through an electrode process, an assembly process, and an activation process. Among them, the electrode process is the most core process in determining the yield and performance of battery cells. The electrode process can include a coating process, a roll press process, and a slitting process. In the coating process, an active material and an insulating material can be applied onto the surface of a current collector. In the roll press process, the electrode can be pressurized 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 a plurality of electrodes according to the design of the battery cell.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The technical concept of this invention aims to solve is to provide a system configured to generate a roll map containing information on the quality and defects of the electrode manufacturing process. [Means for solving the problem]

[0005] According to an exemplary embodiment of the present invention for solving the above-mentioned problems, a first controller is configured to collect coordinate data of an electrode sheet based on a winding amount signal of the electrode sheet generated by an encoder, wherein the encoder is configured to sense the length of the electrode sheet wound by a rewinder to generate the winding amount signal, the coordinate data includes coordinates indicating a position on the electrode sheet, and a measuring instrument is configured to collect measurement data of the electrode sheet, the measuring instrument is configured to associate the coordinate data with the measurement data to generate coordinate-related measurement data.

[0006] The above measurement data includes measured values ​​and time values ​​matched to those measured values.

[0007] The above measuring instrument is configured to calibrate the above coordinate data based on the position of the measuring instrument.

[0008] The measuring instrument is configured to associate the coordinate data with the measurement data by calibrating the coordinate data based on the offset length, and the offset length is the length of the electrode sheet interposed between the rewinder and the portion of the electrode sheet measured by the measuring instrument.

[0009] The above measuring instrument is configured to transmit the above coordinate-related measurement data to the first controller.

[0010] The measuring instrument is configured to scan each of the multiple sections of the electrode sheet, and the transmission of the coordinate-related measurement data by the measuring instrument is triggered (started) when the scanning by the measuring instrument is completed.

[0011] The measuring instrument is configured to further generate compressed measurement data based on the above measurement data and the above coordinate data, and the compressed measurement data has an even smaller size than the above coordinate-related measurement data.

[0012] The compressed measurement data includes representative values ​​of the measured values ​​of the measurement data, the start and end coordinates of the portion of the electrode sheet from which the measurement data was collected, and the start and end coordinates are determined based on the coordinate data.

[0013] The compressed measurement data described above further includes judgment values ​​determined from the above measurement data.

[0014] The compressed measurement data described above further includes a timestamp indicating the date and time the measurement data was collected.

[0015] The compressed measurement data further includes an instrument ID representing the instrument and an equipment ID representing the equipment that processes the electrode sheet.

[0016] The secondary battery manufacturing system further includes a first server configured to generate a roll map representing the electrode sheet based on the compressed measurement data.

[0017] The first controller described above is configured to transmit the coordinate-related measurement data to the first server described above.

[0018] The secondary battery manufacturing system further includes a second controller configured to relay the transmission of the coordinate-related measurement data between the first server and the first controller, and the second controller is configured to generate signals for controlling the rewinder.

[0019] The above secondary battery manufacturing system further includes a second server configured to store the above coordinate-related measurement data.

[0020] The secondary battery manufacturing system further includes a third server configured to transmit API calls to the second server, and the second server is configured to transmit the coordinate-related measurement data to the third server in response to the API calls.

[0021] According to an exemplary embodiment, a secondary battery manufacturing system is provided. The system includes a controller configured to collect coordinate data of an electrode sheet based on a winding amount signal of the electrode sheet generated by an encoder, wherein the encoder is configured to sense the length of the electrode sheet wound by a rewinder to generate the winding amount signal, the coordinate data includes coordinates indicating a position on the electrode sheet, the controller is configured to collect measurement data of the electrode sheet, the controller is configured to associate the coordinate data with the measurement data to generate coordinate-related measurement data, and the controller is configured to generate compressed measurement data including representative values ​​of the measured values ​​of the measurement data based on the coordinate data and the measurement data, and a server is configured to generate a roll map representing the electrode sheet based on the compressed measurement data, wherein the server is configured to store the compressed measurement data and the coordinate-related measurement data.

[0022] The server mentioned above is a data warehouse.

[0023] According to an exemplary embodiment, a secondary battery manufacturing system is provided. A controller configured to collect coordinate data of the electrode sheet based on the winding amount signal of the electrode sheet generated by the encoder, wherein the encoder is configured to sense the length of the electrode sheet wound by the rewinder to generate the winding amount signal, the coordinate data includes coordinates indicating positions on the electrode sheet, and includes a measuring instrument configured to collect measurement data of the electrode sheet and configured to associate the coordinate data and the measurement data to generate coordinate-related measurement data, and the controller is configured to control the rewinder.

Advantages of the Invention

[0024] According to an exemplary embodiment of the present invention, a system for generating a roll map that enables feedback, feedforward, and tracking for an electrode process can be provided.

[0025] The effects obtainable 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 having ordinary knowledge in the technical field to which the exemplary embodiments of the present disclosure belong from the following description. That is, unintended effects associated with implementing the exemplary embodiments of the present disclosure can also be derived by those having ordinary knowledge in the technical field from the exemplary embodiments of the present disclosure.

Brief Description of the Drawings

[0026] [Figure 1] Shows a secondary battery manufacturing system according to an exemplary embodiment. [Figure 2] Shows the measurement of the electrode sheet by the measuring instrument. [Figure 3] Shows a visualized roll map. [Figure 4] Is a flowchart for explaining a method for generating a roll map according to an exemplary embodiment. [Figure 5] An exemplary embodiment of a secondary battery manufacturing system is shown. [Figure 6] An exemplary embodiment of a secondary battery manufacturing system is shown. [Modes for carrying out the invention]

[0027] Preferred embodiments of the present invention will now be described in detail with reference to the attached drawings. Before that, however, terms and words used herein and in the claims should not be interpreted to be limited to their usual or dictionary meanings, but rather to be interpreted as meanings and concepts consistent with the technical idea of ​​the present invention, based on the principle that an inventor may appropriately define the concepts of terms in order to best describe his own invention.

[0028] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the present invention and do not represent the entire technical concept of the present invention; there may be a variety of equivalents and modifications that can substitute for them at the time of filing.

[0029] Furthermore, in describing the present invention, if it is determined that a specific description of a related known configuration or function would likely obscure the gist of the invention, such detailed description will be omitted.

[0030] Embodiments of the present invention are provided to give a more complete explanation to an ordinary person of the art; therefore, the shapes and sizes of components in the drawings may be exaggerated, omitted, or shown schematically for the sake of clarity. Accordingly, the sizes and proportions of each component do not fully reflect their actual sizes and proportions.

[0031] (First Embodiment) Figure 1 shows a secondary battery manufacturing system 10 according to an exemplary embodiment.

[0032] Figure 2 shows the measurement of the electrode sheet ES using a measuring instrument.

[0033] Figure 3 shows the visualized role map VRM.

[0034] Referring to Figures 1 to 3, the secondary battery manufacturing system 10 may include a secondary battery manufacturing apparatus 100, a roll map generator 200, and user equipment 300.

[0035] The secondary battery manufacturing apparatus 100 can be configured to perform the secondary battery manufacturing process. The secondary battery manufacturing apparatus 100 may include an unwinder 111, a rewinder 113, a processing device 115, a first encoder 121, a second encoder 123, a measuring instrument 130, a first controller 141, and a second controller 143.

[0036] The unwinder 111 can be configured to unwind the electrode sheet ES from the first electrode roll ER1. The rewinder 113 can be configured to wind the electrode sheet ES onto the second electrode roll ER2. This allows the electrode sheet ES to move between the unwinder 111 and the rewinder 113.

[0037] A process for manufacturing a secondary battery (e.g., an electrode process) can be performed on the electrode sheet ES. Since the electrode process is performed on the electrode sheet ES which is unwound from the first electrode roll ER1 and wound onto the second electrode roll ER2, the electrode process can be a roll-to-roll process.

[0038] The electrode sheet ES can be processed by a processing device 115. For example, the processing device 115 may include a coater, which can coat the electrode sheet ES with electrode slurry. Alternatively, the processing device 115 may include a pressure roll, which can perform a roll pressing process on the electrode sheet ES coated with electrode slurry. Another example is the processing device 115, which may include a splicing die and a scrap port, which can scrap portions of the electrode sheet ES. Finally, the processing device may include a slitting knife, which can separate the electrode sheet ES into multiple electrode sheets.

[0039] The coating process involves applying a coating material, such as an electrode slurry, onto the electrode sheet ES. The electrode slurry can contain an electrode active material, a conductive material, a binder, and a solvent. An electrode slurry can be provided by dissolving the electrode active material, conductive material, binder, etc., in a solvent.

[0040] The roll pressing process involves passing electrode sheets ES coated with electrode slurry between two opposing pressure rolls. The pressure rolls flatten the electrode surface, thereby increasing the bonding force between the active material and the current collector.

[0041] To increase the production volume per line (e.g., GWh) of a secondary battery production facility, a coating process and a roll pressing process are performed on the wide electrode sheet ES. In a subsequent slitting process, the wide electrode sheet ES can be cut according to the specifications of the battery cell.

[0042] The first encoder 121 can be configured to sense the amount of electrode sheet ES unwound from the first electrode roll ER1 by the unwinder 111. This allows the first encoder 121 to generate an unwind amount signal UWAS indicating the amount of electrode sheet ES unwound. The first encoder 121 can be configured to transmit the unwind amount signal UWAS to the first controller 141. The first controller 141 can be configured to collect input amount data based on the electrode sheet ES unwind amount signal UWAS. The input amount data can indicate the amount of material (i.e., the first electrode roll ER1) fed into the secondary battery manufacturing apparatus 100 to manufacture a secondary battery.

[0043] The second encoder 123 can be configured to sense the amount of electrode sheet ES wound onto the second electrode roll ER2 by the rewinder 113. This allows the second encoder 123 to generate a winding amount signal WAS indicating the amount of electrode sheet ES wound. The second encoder 123 can be configured to transmit the winding amount signal WAS to the first controller 141. The first controller 141 can be configured to collect exhaustion amount data based on the electrode sheet ES winding amount signal WAS. The exhaustion amount data can indicate the production performance of the secondary battery manufacturing apparatus 100.

[0044] The electrode sheet ES may be scrapped in some cases, which may result in the amount of electrode sheet ES unwound by the unwinder 111 being different from the amount of electrode sheet ES wound up by the rewinder 113. Also, if the electrode sheet ES is stretched by pressure in a subsequent process such as a roll press, the amount of electrode sheet ES unwound by the unwinder 111 may be different from the amount of electrode sheet ES wound up by the rewinder 113.

[0045] As an unrestrictive example, the first controller 141 and the second controller 143 could be PLCs (Programmable Logic Controllers). A PLC is a special form of microprocessor-based controller that uses programmable memory to store instructions and embodies functions such as logic, sequencing, timing, counting, and arithmetic to control machines and processes. PLCs are easy to operate and program.

[0046] 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, input interface, output interface, communication interface, and memory device, for the operation of the first controller 141 and the second controller 143. The memory device may include a ROM (Read Only Memory) configured to store system programs such as an operating system, and a RAM (Random Access Memory) 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 control communication between modules that embody logic and convert input signals into output operation 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 system programs and user programs. Conditions and data of industrial equipment and production processes may be transmitted to the CPU via input modules. The results processed by the CPU can be transmitted to the actuator via the output module. The communication interface can be configured to send and receive data between the first controller 141 and the second controller 143, or between the second controller 143 and the server 210.

[0047] However, the first controller 141 and the second controller 143 may also include any one of the following: a simple controller, a microprocessor, a complex processor such as a CPU or GPU, a processor composed of software, dedicated hardware, and firmware. The first controller 141 and the second controller 143 may also be embodied, for example, by a general-purpose computer or application-specific hardware such as a DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), and ASIC (Application Specific Integrated Circuit).

[0048] The first controller 141 can be configured to collect coordinate data CD of the electrode sheet ES based on either the unwinding amount signal UWAS or the winding amount signal WAS of the electrode sheet ES. For example, the first controller 141 can determine the distance traveled by 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 being wound by the rewinder 113 at each point in time during the coating process. The technical concept of the present invention will be described below, 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.

[0049] The coordinate data CD may include coordinates that match each part of the electrode sheet ES. That is, each arbitrary point on the electrode sheet ES may have a coordinate. The above coordinate may be, but is not limited to, a one-dimensional quantity of the travel direction MD (or the longitudinal direction of the electrode sheet ES), which is the direction of movement of the electrode sheet ES. The above coordinate may also be a two-dimensional quantity of the travel direction MD and the lateral direction TD (or the width direction of the electrode sheet ES).

[0050] The measuring instrument 130 can be configured to measure the electrode sheet ES in order to collect measurement data of the electrode sheet ES. The measuring instrument 130 can be configured to scan the electrode sheet ES. The measuring instrument 130 can move along the lateral direction TD. During one scan, the sensing unit 131 of the measuring instrument 130 can move from one end of the lateral direction TD of the electrode sheet ES to the other end of the lateral direction TD of the electrode sheet ES.

[0051] While the measuring instrument 130 performs a lateral scan TD, the electrode sheet ES can be moved in the travel direction MD by the unwinder 111 and rewinder 113. As a result, the portion of the electrode sheet ES measured by the measuring instrument 130 can have a zigzag shape, as shown by the dashed line in Figure 2. That is, the dashed line in Figure 2 can show the movement path of the Field of Measure (FOM) of the measuring instrument 130 due to the movement of the electrode sheet ES and the movement of the measuring instrument 130.

[0052] The measurement data may include inspection results expressed numerically. For example, the measurement data may include dimensional data of the electrode sheet ES such as thickness and width, loading amount data of the coating material on the electrode sheet ES, dimensional data such as the width of the insulating material provided on the coating material and the overlap width between the coating material and the insulating material, and mismatch data between the surface lane on the upper surface of the electrode sheet ES and the surface lane on the lower surface of the electrode sheet ES. Here, the loading amount represents the amount of coating material loaded per unit area of ​​the electrode sheet ES and may be the area density of the coating material.

[0053] As a non-restrictive example, instrument 130 may be either a web gauge or a thickness gauge from Thermo Fisher Scientific.

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

[0055] The secondary battery manufacturing apparatus 100 may further include an inspector configured to inspect the electrode sheet ES to collect inspection data. The inspection data may include quality judgments and process events related to parts of the electrode sheet ES. For example, the inspection data may include appearance data of the electrode sheet ES collected by an image-based inspection device such as a vision machine, data on breaks and seams of the electrode sheet ES, data on parts of the electrode sheet ES that have been sampled, data on parts of the electrode sheet ES that are scheduled to be scrapped, data on scrapped parts of the electrode sheet ES, data on the quality of the coating and insulating materials on the electrode sheet ES, data on reference points indicating the location 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, puncture defects, and indentation defects. Reference points may be formed at predetermined intervals on the electrode sheet ES, and the location of other elements on the electrode sheet ES may be known based on the reference points. The inspector may be any one of a color sensor, a seam sensor, a reference point sensor, and a vision machine.

[0056] The measuring instrument 130 can also be configured to collect two or more types of data. For example, the measuring instrument 130 can be configured to measure the thickness of the electrode sheet ES and the amount of coating material on the electrode sheet ES (e.g., the amount of loading on the electrode sheet ES or the thickness of the electrode sheet ES). Alternatively, the measuring instrument 130 can be configured to sense a reference point on the electrode sheet in addition to measuring the mismatch of the electrode sheet ES.

[0057] The measurement and inspection data described above may be time-series data. Measurement and inspection data can be sorted temporally. Measurement and inspection data can be indexed by time. Measurement data may include measured values ​​and time values ​​(or multiple time values) matched to those measured values. Inspection data may include inspected values ​​and time values ​​(or multiple time values) matched to those inspected values. That is, measurement and inspection data can be stored based on the time at which the measurement and inspection were performed, and the measured values ​​in measurement data and the inspected values ​​in inspection data can be associated with time. The time values ​​in measurement and inspection data may, for example, be in timestamp format, but are not limited to this.

[0058] As an example, measurement data (e.g., loading amount data on an electrode sheet ES or thickness data on an electrode sheet ES) may have a series of measured values ​​and time values ​​associated with the series of loading amount values. The measured values ​​and time values ​​may, but are not limited to, a one-to-one matching. The measured values ​​may also be matched many-to-one with a single timestamp representing the start point of the measurement. As another example, defect data may have values ​​indicating a defect and time values ​​associated with those values. Here, indicating a defect includes at least one of the following: the presence or absence of a defect and the type of defect.

[0059] The processing unit 133 can be configured to receive the measurement signal MS sensed by the sensing unit 131 to collect measurement data. The processing unit 133 can be connected to the sensing unit 131 by wire or wireless connection.

[0060] The first controller 141 may be in operative communication with the first encoder 121, the second encoder 123, the measuring instrument 130, additional measuring instruments, and additional test instruments via a wired or wireless data network. The data network may be unidirectional or bidirectional. The data network may be embodied by a public network and / or a specialized network using a physical channel, WiFi, Bluetooth®, and / or other frequency bands. The first encoder 121, the second encoder 123, the measuring instrument 130, additional measuring instruments, and additional test instruments may be configured to collect data from equipment, workpieces, semi-finished products, and finished products within the secondary battery manufacturing apparatus 100, or to generate signals for collecting data. The first controller 141 may be configured to transmit coordinate data CD to the processing unit 133.

[0061] The processing unit 133 can be configured to generate coordinate-related measurement data CMD based on coordinate data CD and measurement data. The processing unit 133 can also be configured to associate measurement data with coordinate data CD in order to generate coordinate-related measurement data CMD. Generally, measurement data can be processed based on trigger points. Examples of measurement data processing may include saving the measurement data, manipulating the measurement data (e.g., generating coordinate-related measurement data CMD and compressed measurement data PMD), and transmitting the measurement data.

[0062] As a non-restrictive example, the trigger point for processing measurement data may be the completion of scanning. For example, the sensing unit 131 can scan the electrode sheet ES in the lateral direction TD, and after each scan, the measurement data can be saved, processed, modulated, and transmitted. In other examples, the trigger point may be the completion of multiple scans, or it may be the completion of a portion of a scan.

[0063] The electrode sheet ES can be divided into multiple sections S1, S2, S3, S4, S5, and S6 based on scanning by the sensing unit 131 of the measuring instrument 130. Each of the multiple sections S1, S2, S3, S4, S5, and S6 can correspond to one scan by the sensing unit 131. The dashed lines in Figure 2 are virtual boundaries between the multiple sections S1, S2, S3, S4, S5, and S6.

[0064] According to an exemplary embodiment, the measuring instrument 130 may be configured to calibrate the coordinate data CD based on the position of the measuring instrument 130. More specifically, the measuring instrument 130 may be configured to associate the coordinates of the coordinate data CD with the measured values ​​of the measurement data by calibrating the coordinate data CD based on the offset length OD.

[0065] The measuring instrument 130 can collect measurement data for the portion corresponding to (for example, overlapping) the sensing unit 131, and the coordinate data CD is collected by the second encoder 123, which is separated from the sensing unit 131 as described above. As a result, the portion of the electrode sheet ES corresponding to the coordinate data CD collected at the same time may be different from the portion of the electrode sheet ES corresponding to the measurement data.

[0066] 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 an offset length OD, and associating the calibrated coordinate data CD with the measurement data. Coordinate-related measurement data CMD may include a measurement value, a time value matched to the measurement value, a start coordinate, and an end coordinate. The time value may be a timestamp indicating the date and time the measurement data was collected. The start and end coordinates may 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 may be determined based on the calibrated coordinate data CD. Coordinate-related measurement data CMD may include an instrument ID for identifying the instrument 130 and an equipment ID for identifying the secondary battery manufacturing apparatus 100.

[0067] The starting coordinate of interval S1 is X1, and the ending coordinate is X2. The starting coordinate of interval S2 is X2, and the ending coordinate is X3. The starting coordinate of interval S3 is X3, and the ending coordinate is X4. The starting coordinate of interval S4 is X4, and the ending coordinate is X5. The starting coordinate of interval S5 is X5, and the ending coordinate is X6. The starting coordinate of interval S6 is X6, and the ending coordinate is X7.

[0068] As another example, the sensing unit 131 may be directly connected to a position measuring instrument such as a first encoder 121 and a second encoder 123, or it may be configured to sense a reference point on an electrode sheet ES. In this case, the processing unit 133 may be configured to collect coordinate-related measurement data CMD based on the measurement signal MS transmitted from the sensing unit 131.

[0069] Multiple guide rolls can be interposed between the sensing unit 131 and the rewinder 113 to define the movement path of the electrode sheet ES. This allows the offset length OD to 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 the same as the straight-line distance between the sensing unit 131 and the rewinder 113, or it may be longer than the straight-line distance between the sensing unit 131 and the rewinder 113.

[0070] The processing unit 133 can be configured to generate compressed measurement data PMD based on the measurement data and coordinate data CD. The compressed measurement data PMD may include representative values ​​and judgment values ​​for each of the measurement data for multiple sections S1, S2, S3, S4, S5, and S6 of the electrode sheet ES, as well as the start and end coordinates for each of the multiple sections S1, S2, S3, S4, S5, and S6 of the electrode sheet ES. The compressed measurement data PMD may further include timestamps indicating the date and time of collection of the measurement data for the multiple sections S1, S2, S3, S4, S5, and S6, as well as instrument IDs and equipment IDs.

[0071] The processing unit 133 can be configured to calculate representative values ​​of the measurement data for each of the multiple intervals S1, S2, S3, S4, S5, and S6 of the electrode sheet ES. The representative values ​​of the measurement data for each of the multiple intervals S1, S2, S3, S4, S5, and S6 of the electrode sheet ES may include at least one of the mean, standard deviation, median, maximum, and minimum values ​​of the measurement data for each of the multiple intervals S1, S2, S3, S4, S5, and S6.

[0072] For example, if the coordinate-related measurement data CMD has 1500 measurement values ​​corresponding to one scan of the sensing unit 131, the compressed measurement data PMD may include a single representative value calculated based on the 1500 measurement values. As a result, the size of the compressed measurement data PMD may differ from the size of the coordinate-related measurement data CMD. The size of the compressed measurement data PMD may even be smaller than the size of the coordinate-related measurement data CMD.

[0073] The server 220, described later, performs various tasks for managing secondary battery production in addition to generating roll maps. According to the exemplary embodiment, since the roll map is generated based on compressed measurement data PMD instead of coordinate-related measurement data having a similar size to the raw measurement data, the resources of the server 220 allocated to generating and storing roll maps can be saved. This allows for continuous production management of the server 220 and improves the reliability of secondary battery manufacturing.

[0074] Based on the coordinate data CD for each of the multiple sections S1, S2, S3, S4, S5, and S6 of the electrode sheet ES, the start and end coordinates for each of the multiple sections S1, S2, S3, S4, S5, and S6 of the electrode sheet ES can be determined. 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.

[0075] Unlike in Figure 2, where each of the multiple sections S1, S2, S3, S4, S5, and S6 of the electrode sheet ES corresponds to a single scan of the sensing unit 131, each of the multiple sections of the electrode sheet ES can correspond to multiple scans of the sensing unit 131 or to a portion of a single scan of the sensing unit 131.

[0076] The measurement data is processed according to a set method to determine the judgment values ​​for multiple sections S1, S2, S3, S4, S5, and S6 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 upper and lower limits, the corresponding part 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 less than the lower limit or greater than the upper limit, the corresponding part of the electrode sheet ES can be determined to be defective.

[0077] As another example, a measurement (or representative value) within the first range can be determined to be normal, a measurement (or representative value) within the second range (larger than the first range) can be determined to be excessive, a measurement (or representative value) within the third range (larger than the second range) can be determined to be very excessive, a measurement (or representative value) within the fourth range (smaller than the first range) can be determined to be insufficient, and a measurement (or representative value) within the fifth range (smaller than the fourth range) can be determined to be very insufficient.

[0078] Here, if the lower limit of the second range is greater than or equal to the upper limit of the first range, then 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, then the fourth range is less than the first range.

[0079] The processing unit 133 can be configured to transmit compressed measurement data PMD to the first controller 141. The processing unit 133 can be configured to transmit coordinate-related measurement data CMD to the roll map generator 200 (more specifically, the server 230 of the roll map generator 200). The coordinate-related measurement data CMD can be transmitted to the server 230 via the server 210, but is not limited to this. The coordinate-related measurement data CMD can also be transmitted directly from the processing unit 133 to the server 230.

[0080] The first controller 141 can be configured to transmit the compressed measurement data PMD to the second controller 143. The second controller 143 can be configured to transmit the compressed measurement data PMD to the roll map generator 200. However, it is not limited to this, and the first controller 141 can also transmit the compressed measurement data PMD directly to the roll map generator 200.

[0081] The second controller 143 can be configured to control the operation of the unwinder 111, the rewinder 113, and the processing instrument 115. The second controller 143 can be configured to generate signals for the operation and interruption of the unwinder 111, the rewinder 113, and the processing instrument 115. The signals for the operation and interruption of the unwinder 111, the rewinder 113, and the processing instrument 115 can be generated based on electrode spec data ESD, compressed measurement data PMD, additional inspection signals, and additional measurement signals.

[0082] The role map generator 200 may include servers 210, 220, 230, 240, and 250. Servers 210, 220, 230, 240, and 250 may be separate entities that perform a variety of functions, including generating role maps and intermediate role maps, storing role maps and intermediate role maps, or relaying communication between servers 210, 220, 230, 240, and 250. Unlike the illustration in Figure 1, some of servers 210, 220, 230, 240, and 250 may be merged. For example, server 220 and server 230 may be merged, server 220 and server 240 may be merged, or servers 220, 240, and 250 may be merged.

[0083] The roll map generator 200 can be configured to generate a roll map containing data about the electrode sheet ES. The roll map can represent the electrode sheet ES based on coordinates indicating its position on the electrode sheet ES. Processes for manufacturing a secondary battery can be performed on the electrode sheet ES, as described above. The roll map can represent the 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 secondary battery manufacturing process, as described later.

[0084] A roll map can contain event data representing events in the roll-to-roll process of electrode sheets (ES). Since event data generally occurs as the process progresses, it is typically time-series data. Therefore, process event data can include a value representing the event and a time value matched to it. Time-series data can be temporally ordered. Temporal ordering is a key characteristic of time-series data, where events are organized in the order in which they occur and arrive for processing. That is, time-series data can be stored based on when an event occurred (i.e., when inspection and measurement are performed, or when a process action is taken), and events can be matched with time values.

[0085] The manufacturing of secondary batteries involves a series of distinct processes, where the leading process influences the following processes. Feedforward, in this context, refers to correcting the following processes based on data generated according to the results of the leading process. However, it is difficult to reflect the time-series data of the leading process in the following processes if it is not directly matched with real-world workpieces, semi-finished products, and finished products. Here, "workpiece" refers to an item provided as a result of each process, such as an electrode sheet ES subjected to the coating, roll pressing, and slitting processes shown in Figure 1. "Semi-finished product" can refer to one of the following: a separator membrane cut by the notching process, an electrode, or an assembly thereof. A semi-finished product may also be a structure including a housing and an electrode assembly housed within the housing (in some cases, the structure further includes an electrolyte). "Finished product" refers to an item processed by the activation process to be operational as a secondary battery. The above definitions of workpieces, semi-finished products, and finished products are only one aspect of them and do not preclude their usual definitions.

[0086] For feedforward, time-series data needs to be associated with the locations 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 amount of movement of the electrode sheet ES (i.e., either winding or unwinding). The roll map can associate time-series data with coordinate data that includes coordinates indicating the locations of real-world workpieces, parts, semi-finished products, and finished products. This allows roll map generation and feedforward based on roll maps to achieve improved production efficiency and quality by quantifying and objectifying aspects of the process that were previously dependent on the operator's discretion.

[0087] Roll maps can be generated in lot units. 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. Thus, the server 220 can be configured to save the roll map of the previous process. The roll map of the previous process can correspond to the first electrode roll ER1. The server 220 can also be configured to generate and save the roll map of the current process. The roll map of the current process can correspond to the second electrode roll ER2.

[0088] Furthermore, the roll map of a preceding lot can be used to improve the process for subsequent lots, and such action can be called process feedback. Process feedback using a roll map can include identifying process conditions and parameters that cause problems and defects based on the data contained in the roll map.

[0089] Furthermore, by generating roll maps cumulatively for workpieces, parts, semi-finished products, and finished products in each unit process, it becomes possible to track the process history for shipped products (e.g., battery cells, battery modules, or battery packs). As an example, a battery cell may include a cell ID formed on the electrode assembly or case. The cell ID may include lot numbers and coordinate information for the electrodes and separators contained in the battery cell. In other words, the cell ID can be associated with a roll map of the electrodes and separators contained in the battery cell. This allows for retrieval of the collective manufacturing data history of a battery cell based on its cell ID if an event such as a quality issue occurs in a battery cell that has already been shipped.

[0090] The compressed measurement data (PMD) can be transmitted to server 220 via server 210. Server 210 may be a communication server. Server 210 may, for example, be a server for communication based on log data, but is not limited to this. Server 210 may be a program for communication between the second controller 143 of the manufacturing equipment and server 220 for manufacturing management. Server 210 may also be implemented in hardware. The language and protocol of server 220 may differ from the language and protocol of the second controller 143. For example, the language of server 220 may be SQL, and the language of the second controller 143 may be a ladder diagram.

[0091] Server 210 can be configured to convert electrode specification data ESD transmitted from Server 220 into the language of the second controller 143. Server 210 can also be configured to convert compressed measurement data PMD into the language of Server 220 and record the compressed measurement data PMD in Server 220's database.

[0092] The electrode specification data ESD can include model information and recipes for the electrode sheet ES. The electrode specification data ESD can also include various details related to the processing of the electrode sheet ES, such as the number of lots processed in the current process, the number of textured lane lanes formed on the electrode sheet ES, process conditions including temperature, humidity and pressure, and process parameters including the movement speed of the electrode sheet ES, the discharge rate of the coating die and the pressure of the pressure roll.

[0093] To control the process, a communication line can be installed between the second controller 143 and the server 220 via the server 210. This allows for data transmission via the second controller 143 to save resources required for installing a communication line and streamline data processing and management compared to the case where the first encoder 121, the second encoder 123, and the measuring instrument 130 directly transmit the unwinding amount signal UWAS, the winding amount signal WAS, and the measurement signal MS to the first server 220, or the case where the first controller 141 directly transmits compressed measurement data PMD to the server 220.

[0094] Server 220 can be configured to generate a roll map. The roll map may include data regarding lot specifications. These lot specifications may include, for example, the lot number, the length of the wound electrode sheet ES, the width of the electrode sheet ES, and the materials and composition used to process the electrode sheet ES.

[0095] According to an exemplary embodiment, the server 220 may be a data processing system that supports various activities necessary to manage 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 coating, roll pressing, and slitting processes.

[0096] Server 230 can be configured to store coordinate-related measurement data (CMD). Server 230 can also be configured to transmit the coordinate-related measurement data (CMD) to Server 240 in response to an API request (AR) from Server 240. The API request (AR) may include information for identifying the coordinate-related measurement data (CMD). For example, the API request (AR) may include a timestamp, start coordinates, and end coordinates.

[0097] The server 240 can be configured to store and process inspection data of electrode sheets ES. The server 240 can manage the quality of electrode sheet ES processing by continuously monitoring the processing of electrode sheet ES based on the inspection data. According to an exemplary embodiment, the server 240 may be a Statistical Process Controller (SPC). By collecting and analyzing manufacturing data in near real time, the server 240 can identify problem conditions in a timely manner and provide alarms to operators before potential problems occur.

[0098] 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, it may be unsuitable for long-term storage of coordinate-related measurement data (CMD) and compressed measurement data (PMD). Server 250 could be, for example, a data warehouse and can store coordinate-related measurement data (CMD) and compressed measurement data (PMD) for long periods based on the product's quality assurance period, etc. This allows for tracking of the manufacturing process according to the product lifecycle.

[0099] The processing unit 133 and servers 210, 220, 230, 240, and 250 can be embodied in hardware, firmware, software, or combinations thereof. For example, the processing unit 133 and servers 210, 220, 230, 240, and 250 can include computing devices such as workstation computers, desktop computers, laptop computers, and tablet computers. The processing unit 133 and servers 210, 220, 230, 240, and 250 can also include any one of the following: a simple controller, a microprocessor, a complex processor such as a CPU or GPU, a processor configured with software, dedicated hardware, and firmware. The processing unit 133 and servers 210, 220, 230, 240, and 250 can be embodied, for example, in a general-purpose computer or application-specific hardware such as a DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), and ASIC (Application Specific Integrated Circuit).

[0100] Since the server 220 stores and processes a lot of general manufacturing control data other than roll maps, the roll maps stored on the server 220 may include simplified and compressed measurement data PMD instead of coordinate-related measurement data CMD which contains raw measurement data. The server 220 can provide roll maps in response to requests from user equipment 300. User equipment 300 can display a visualized roll map VRM as shown in Figure 3. User equipment 300 can be any device for communicating with the roll map generator 200, such as a workstation computer, notebook computer, laptop computer, desktop computer, tablet, mobile device such as a smartphone, and wearable device. User equipment 300 can be configured to generate a request R1 for loading a roll map or a request R2 for loading an intermediate roll map. User equipment 300 can be configured to transmit requests R1 and R2 to the roll map generator 200. User equipment 300 may include an input tool for entering requests R1 and R2 and a display device for displaying the visualized roll map VRM.

[0101] The visualized roll map VRM can include multiple visualization intervals VS1, VS2, VS3, VS4, VS5, and VS6 corresponding to multiple intervals S1, S2, S3, S4, S5, and S6 of the electrode sheet ES. Each of the multiple visualization intervals VS1, VS2, VS3, VS4, VS5, and VS6 can include start coordinates, end coordinates, and color.

[0102] The starting coordinate of visualization interval VS1 can be X1, and the ending coordinate can be X2. The starting coordinate of visualization interval VS2 can be X2, and the ending coordinate can be X3. The starting coordinate of visualization interval VS3 can be X3, and the ending coordinate can be X4. The starting coordinate of visualization interval VS4 can be X4, and the ending coordinate can be X5. The starting coordinate of visualization interval VS5 can be X5, and the ending coordinate can be X6. The starting coordinate of visualization interval VS6 can be X6, and the ending coordinate can be X7.

[0103] The representative values ​​of the coordinate-related measurement data CMD for visualization intervals VS1, VS2, VS4, and VS6 can be represented by color C1, the representative values ​​of the coordinate-related measurement data CMD for visualization interval VS3 can be represented by color C2, and the representative values ​​of the coordinate-related measurement data CMD for visualization interval VS5 can be represented by color C3.

[0104] Color C1 indicates that the representative values ​​for visualization intervals VS1, VS2, VS4, and VS6 are normal; color C2 indicates that the representative value for visualization interval VS3 is excessive; and color C3 indicates that the representative value for visualization interval VS3 is very excessive. Color C4 indicates that the representative value is insufficient; and color C5 indicates that the representative value is very insufficient.

[0105] Here, for the sake of explanation, a visualized roll map (VRM) showing only one type of coordinate-related measurement data (CMD) is presented. However, the roll map can further include additional data such as inspection data generated by the inspection equipment, equipment data, and process parameter data. Such additional data can be associated with coordinates, and the specific method of association between the additional data and coordinates may differ from that of the coordinate-related measurement data (CMD). For example, pinch hole defect data, which is one type of inspection data, can be matched with a single coordinate indicating the location of the pinch hole, rather than with start and end coordinates.

[0106] Intermediate roll maps can be provided by associating coordinate-related measurement data (CMD), which includes raw measurement data, with the roll map. Coordinate-related measurement data (CMD) can be associated with the roll map based on timestamps and coordinates. In addition to roll maps that provide information on defects and production performance based on defects, intermediate roll maps can provide statistical production control by providing information on raw measurement data. This allows intermediate roll maps to provide additional insights into workpiece quality, process performance, OEE (Overall Equipment Effectiveness) drill-down, anomaly detection, traceability, preventive maintenance, and predictive alarms.

[0107] Servers 210, 220, 230, 240, and 250 can include physical servers or cloud servers. Servers 210, 220, 230, 240, and 250 can provide data and analysis results to workers through various frameworks. The frameworks can include protocols that support data transmission so that user devices 300 can visualize data through a user interface and provide updated visualizations when new data is calculated by servers 220 and 230. The protocols that support the above data transmission can use HTML, JavaScript, and / or JSON.

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

[0109] According to some embodiments, the operation of the processing unit 133 and servers 210, 220, 230, 240, and 250 can be embodied as instructions stored on a machine-readable medium that can be read and executed by one or more processors. Here, the machine-readable medium can 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 can include ROM (Read Only Memory), RAM (Random Access Memory), magnetic disk storage medium, optical storage medium, flash memory, electrical, optical, acoustic or other forms of radio signals (e.g., carrier waves, infrared signals, digital signals, etc.) and any other signals.

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

[0111] However, this is for illustrative purposes only, and the operation of the aforementioned processing unit 133 and servers 210, 220, 230, 240, and 250 can also be triggered by other devices that execute 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 130, additional measuring instruments, and additional inspection instruments. This allows resources at specific process steps and sites to be easily transferred to other processes and sites, or new resources to be easily introduced at each process step and site.

[0113] The data network between elements of the secondary battery manufacturing system 10 can include a variety of communication channels, including unidirectional, bidirectional wired, and wireless communication. For example, the data network can include industrial protocol networks such as OPC, Modbus, and ProfiNet. The communication channel may be 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 an operator to input manufacturing data. The roll map generator 200 may also allow operator data input using input tools and computer-based input of manufacturing data, such as Excel file scraping.

[0115] An architecture configured to generate role maps and intermediate role maps can be realized by adding only a first controller 141 to the essential elements of a modern process control system. In other words, the system according to the exemplary embodiment can leverage resources already installed in the manufacturing site and save additional capital expenditures. Furthermore, by applying the same architecture to newly constructed manufacturing facilities as to existing manufacturing facilities, it is possible to streamline the reliability of secondary battery manufacturing, the detection and improvement of problematic processes, and the introduction of new processes.

[0116] (Second Embodiment) Figure 4 is a flowchart illustrating a method for generating a role map according to an exemplary embodiment.

[0117] Referring to Figures 1 and 4, lot specifications can be registered in the first server 220 at P110. Lot specifications can be automatically registered in the first server 220 based on electrode specification data ESD. Alternatively, lot specification registration can be triggered (executed) by a signal generated by the second controller 143. Alternatively, lot specification registration can be triggered (executed) by the reader of the secondary battery manufacturing apparatus 100 scanning the lot identification mark. Alternatively, lot specifications can be manually registered by an operator.

[0118] Next, at P120, coordinate data CD and measurement data can be collected. Coordinate data CD can be collected by the first controller 141. Measurement data can be collected by the measuring instrument 130, as described above.

[0119] Next, P130 can generate coordinate-related measurement data CMD and compressed measurement data PMD. As described above, the coordinate-related measurement data CMD and compressed measurement data PMD can be generated by the processing unit 133 of the measuring instrument 130.

[0120] Next, at P140, the coordinate-related measurement data CMD and the compressed measurement data PMD can be transmitted to the roll map generator 200. The compressed measurement data PMD can be transmitted to the server 220. The server 220 can be configured to generate a roll map based on the compressed measurement data PMD. The above describes an embodiment in which a roll map is generated by the first server 220, but this is for illustrative purposes only and does not limit the technical idea of ​​the present invention in any way. The roll map can also be generated by one of the servers 230, 240, and 250.

[0121] (Third embodiment) Figure 5 shows a secondary battery manufacturing system 11 according to an exemplary embodiment.

[0122] Referring to Figure 5, the secondary battery manufacturing system 11 may include a secondary battery manufacturing apparatus 101, a roll map generator 200, and user equipment 300.

[0123] The role map generator 200 and user equipment 300 are substantially the same as those described with reference to Figures 1 to 3, so redundant explanations of them will be omitted.

[0124] The secondary battery manufacturing apparatus 101 may include an unwinder 111, a rewinder 113, a processing device 115, a first encoder 121, a second encoder 123, a measuring instrument 130, and a controller 140.

[0125] Controller 140 can be configured to perform the functions of the first controller 141 and the second controller 143 in Figure 1. This allows Controller 140 to generate coordinate data CD based on either the unwinding amount signal UWAS or the winding amount signal WAS, transmit the coordinate data CD to the processing unit 133 of the measuring instrument 130, receive coordinate-related measurement data CMD and compressed measurement data PMD from the processing unit 133, and transmit the coordinate-related measurement data CMD and compressed measurement data PMD to the first server 220 via Server 210. Controller 140 can also be configured to generate signals for controlling the unwinder 111, the rewinder 113, and the processing device 115.

[0126] (Fourth Embodiment) Figure 6 shows a secondary battery manufacturing system 12 according to an exemplary embodiment.

[0127] Referring to Figure 6, the secondary battery manufacturing system 12 may include a secondary battery manufacturing apparatus 100, a server 201, and user equipment 300.

[0128] The secondary battery manufacturing apparatus 100 and user equipment 300 are substantially the same as those described with reference to Figures 1 to 3, so redundant explanations of them will be omitted.

[0129] Server 201 can be configured to perform the functions of servers 210, 220, 230, 240, and 250 in Figure 1. This allows server 201 to receive coordinate-related measurement data CMD and compressed measurement data PMD, generate roll maps and intermediate roll maps, and transmit roll map data D1 and intermediate roll map data D2 to user equipment.

[0130] The present invention has been described in more detail above through the drawings and embodiments. However, the configurations described in the drawings or embodiments described herein are merely one embodiment of the present invention and do not represent the entire technical concept of the present invention. Therefore, there may be various equivalents and modifications that can be substituted for them at the time of filing. [Explanation of symbols]

[0131] 10. Secondary battery manufacturing system 11. Secondary battery manufacturing system 12. Secondary battery manufacturing system 100 Secondary battery manufacturing equipment 101 Secondary battery manufacturing equipment 111 Unwinder 113 Rewinder 115 Processing equipment 121 First Encoder 123 Second Encoder 130 Measuring Instruments 131 Sensing Unit 133 Processing Unit 140 controllers 141 First Controller 143 Second Controller 200 Role Map Generator 201 Server 210 servers 220 servers 230 servers 240 servers 250 servers 300 user devices AR API Request C1 Color C2 Color C3 Color C4 Color C5 Color CD coordinate data CMD coordinate-related measurement data D1 Data D2 Data ER1 First Electrode Roll ER2 Second Electrode Roll ES electrode sheet ESD electrode specifications data ID measuring instrument MD running direction MS measurement signal PMD measurement data R1 Request R2 Request TD Lateral UWAS quantity signal VRM Role Map WAS quantity signal

Claims

1. A first controller configured to collect coordinate data of an electrode sheet based on an electrode sheet winding amount signal generated by an encoder, wherein the encoder is configured to sense the length of the electrode sheet wound by a rewinder to generate the winding amount signal, and the coordinate data includes coordinates indicating a position on the electrode sheet, and In a secondary battery manufacturing system, which includes a measuring instrument configured to collect measurement data of the electrode sheet, A secondary battery manufacturing system comprising a measuring instrument configured to associate coordinate data with measurement data in order to generate coordinate-related measurement data.

2. The secondary battery manufacturing system according to claim 1, wherein the measurement data includes a measured value and a time value matched to the measured value.

3. The secondary battery manufacturing system according to claim 1, wherein the measuring instrument is configured to calibrate the coordinate data based on the position of the measuring instrument.

4. The measuring instrument is configured to associate the coordinate data with the measurement data by calibrating the coordinate data based on the offset length, and The secondary battery manufacturing system according to claim 1, wherein the offset length is the length of the electrode sheet interposed between the rewinder and the portion of the electrode sheet measured by the measuring instrument.

5. The secondary battery manufacturing system according to any one of claims 1 to 4, wherein the measuring instrument is configured to transmit the coordinate-related measurement data to the first controller.

6. The measuring instrument is configured to scan each of the multiple sections of the electrode sheet, and The secondary battery manufacturing system according to claim 5, wherein the transmission of the coordinate-related measurement data by the measuring instrument is triggered by the completion of scanning by the measuring instrument.

7. The measuring instrument is configured to further generate compressed measurement data based on the measurement data and the coordinate data, and The secondary battery manufacturing system according to claim 5, wherein the compressed measurement data has an even smaller size than the coordinate-related measurement data.

8. The compressed measurement data includes representative values ​​of the measured values ​​of the measurement data, the start and end coordinates of the portion of the electrode sheet from which the measurement data was collected, and The secondary battery manufacturing system according to claim 7, wherein the start coordinates and end coordinates are determined based on the coordinate data.

9. The secondary battery manufacturing system according to claim 7, wherein the compressed measurement data further includes a determination value determined from the measurement data.

10. The secondary battery manufacturing system according to claim 7, wherein the compressed measurement data further includes a timestamp indicating the date and time of collection of the measurement data.

11. The secondary battery manufacturing system according to claim 7, wherein the compressed measurement data further includes a measuring instrument ID representing the measuring instrument and an equipment ID representing the equipment for processing the electrode sheet.

12. The secondary battery manufacturing system according to claim 7, further comprising a first server configured to generate a roll map representing the electrode sheet based on the compressed measurement data.

13. The secondary battery manufacturing system according to claim 12, wherein the first controller is configured to transmit the coordinate-related measurement data to the first server.

14. The system further includes a second controller configured to relay the transmission of the coordinate-related measurement data between the first server and the first controller, The secondary battery manufacturing system according to claim 13, wherein the second controller is configured to generate signals for controlling the rewinder.

15. The secondary battery manufacturing system according to claim 10, further comprising a second server configured to store the aforementioned coordinate-related measurement data.

16. The system further includes a third server configured to transmit API calls to the second server, The secondary battery manufacturing system according to claim 15, wherein the second server is configured to transmit the coordinate-related measurement data to the third server in response to the API call.

17. A controller configured to collect coordinate data of an electrode sheet based on an electrode sheet winding amount signal generated by an encoder, wherein the encoder is configured to sense the length of the electrode sheet wound by a rewinder to generate the winding amount signal, and the coordinate data includes coordinates indicating a position on the electrode sheet, A measuring instrument configured to collect measurement data of the electrode sheet, to associate the coordinate data with the measurement data to generate coordinate-related measurement data, and to generate compressed measurement data including representative values ​​of the measurement values ​​of the measurement data based on the coordinate data and the measurement data, and In a secondary battery manufacturing system including a server configured to generate a roll map representing the electrode sheet based on the compressed measurement data, The server is configured to store the compressed measurement data and the coordinate-related measurement data in a secondary battery manufacturing system.

18. The secondary battery manufacturing system according to claim 17, wherein the server is a data warehouse.

19. A controller configured to collect coordinate data of an electrode sheet based on an electrode sheet winding amount signal generated by an encoder, wherein the encoder is configured to sense the length of the electrode sheet wound by a rewinder to generate the winding amount signal, and the coordinate data includes coordinates indicating the position on the electrode sheet, and In a secondary battery manufacturing system including a measuring instrument configured to collect measurement data of the electrode sheet and to associate the coordinate data with the measurement data in order to generate coordinate-related measurement data, The controller is configured to control the rewinder in a secondary battery manufacturing system.

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