Battery manufacturing system and battery manufacturing method

Abstract

According to exemplary embodiments, provided is a battery manufacturing system. The system comprises a coupling device configured to form a plurality of first electrodes having electrode IDs from a first electrode sheet assigned the electrode IDs at predetermined intervals, form a plurality of second electrodes from a second electrode sheet, and couple the plurality of first electrodes and the plurality of second electrodes, wherein the coupling device may comprise a controller configured to collect coordinate-related electrode ID data including the electrode IDs and coordinate values of at least one of the first electrodes or the second electrodes matched to the electrode IDs on the basis of a first input amount of the first electrode sheet, a second input amount of the second electrode sheet, and an electrode ID detection signal.

Description

Battery manufacturing system and battery manufacturing method

[0001] The present invention relates to a battery manufacturing system and a battery manufacturing method.

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2023-0128126, filed September 25, 2023, the entire contents of which are incorporated herein by reference.

[0003] Batteries, especially secondary batteries, unlike primary batteries, can be charged and discharged multiple times. Secondary batteries are widely used as the energy source for various wireless devices, including handsets, laptops, and cordless vacuum cleaners. Recently, improvements in energy density and economies of scale have dramatically reduced the manufacturing cost per unit of battery capacity. Furthermore, as the range of battery electric vehicles (BEVs) has increased to match that of fuel-powered vehicles, the primary use of batteries is shifting from mobile devices to mobility.

[0004] Battery cells are manufactured through electrode processes, assembly processes, and activation processes. The manufactured battery cells are then incorporated into larger units, such as battery modules and battery packs, for use in electric vehicles. The electrode process is the most critical process in determining the yield and performance of battery cells. The electrode process may include a coating process, a roll-press process, and a slitting process. In the coating process, active and insulating materials may be applied to the surface of a current collector. In the roll-press process, the electrode may be pressed by pressure rolls. The roll-press process may determine the density, performance, and surface quality of the electrode. In the slitting process, the electrode may be cut into multiple electrodes according to the battery cell design.

[0005] [Prior Art Literature]

[0006] [Patent Document]

[0007] (Patent Document 0001) Korean Patent Publication No. 10-2023-0025288

[0008] The technical idea of ​​the present invention aims to solve a problem by providing a battery manufacturing system and a battery manufacturing method capable of searching for historical data of battery manufacturing.

[0009] According to exemplary embodiments of the present invention for solving the above-described problem, a battery manufacturing system is provided. The system includes a joining device configured to form a plurality of first electrodes having electrode IDs from a first electrode sheet to which electrode IDs are assigned at a predetermined pitch interval, form a plurality of electrodes from a second electrode sheet, and join the plurality of first electrodes and the plurality of second electrodes; wherein the joining device may include a controller configured to collect coordinate-related electrode ID data including the electrode ID and coordinate values ​​of at least one of the first electrode and the second electrode matched to the electrode ID based on a first input amount of the first electrode sheet, a second input amount of the second electrode sheet, and an electrode ID detection signal.

[0010] The system may further include a server configured to store electrode ID data associated with the coordinates.

[0011] The system may further include a notching device for providing electrode IDs at predetermined pitch intervals to the first electrode sheet. The notching device may include: a notching machine for forming electrode tabs at predetermined pitch intervals to the first electrode sheet; an ID marking device for marking electrode IDs on the electrode tabs; and a notching controller configured to collect coordinate-related electrode ID data including the electrode ID and a first coordinate value that is a position of the first electrode sheet in a notching process matched to the electrode ID.

[0012] The above first coordinate value can be acquired based on the signal of the amount of release and / or the amount of release of the first electrode sheet when the electrode ID is detected in the notching process.

[0013] The coupling device may include a first electrode cutter configured to cut a first electrode sheet unwound from a first electrode roll to provide a plurality of first electrodes; a second electrode cutter configured to cut a second electrode sheet unwound from a second electrode roll to provide a plurality of second electrodes; and a second electrode ID reader configured to detect an electrode ID of an electrode tab of each of the plurality of first electrodes to generate an electrode ID detection signal.

[0014] The first input amount of the first electrode sheet may be calculated based on the pitch of the plurality of first electrodes and the cut count of the first electrode cutter, and the second input amount of the second electrode sheet may be calculated based on the pitch of the plurality of second electrodes and the cut count of the second electrode cutter.

[0015] The coupling device may further include a first rotary encoder configured to generate a first input signal representing a first input amount of the first electrode sheet; and a second rotary encoder configured to generate a second input signal representing a second input amount of the second electrode sheet.

[0016] The server may store a roll map of each process including roll map coordinate values ​​indicating positions on the first electrode sheet and the second electrode sheet in a plurality of preceding processes prior to assigning the electrode ID. The server may correspond at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID to the roll map coordinate value.

[0017] The system may further include a subsequent process event data matching unit that matches at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID with the ID of at least one upper battery assembly selected from the following and / or process event data acquired in a plurality of subsequent processes after the combination of the first electrode and the second electrode.

[0018] 1) Assembly ID of an electrode assembly including at least one combination of the first electrode and the second electrode

[0019] 2) Semi-finished product ID of a battery semi-finished product including the above electrode assembly

[0020] 3) Cell ID of the battery cell including the electrode assembly or battery semi-finished product

[0021] 4) Laminate ID of a battery cell laminate including a plurality of the above battery cells

[0022] 5) Module ID of the battery module including the above battery cell stack

[0023] 6) Pack ID of a battery pack including multiple battery modules

[0024] According to exemplary embodiments, a method for manufacturing a battery is provided. The method may include: assigning an electrode ID to a first electrode sheet at a predetermined pitch interval; forming a plurality of first electrodes having the electrode ID from the first electrode sheet and forming a plurality of second electrodes from a second electrode sheet; combining the plurality of first electrodes and the plurality of second electrodes; and collecting coordinate-related electrode ID data including the electrode ID and a coordinate value of at least one of the first electrode and the second electrode matched to the electrode ID.

[0025] The above electrode ID can be applied to electrode tabs formed at a predetermined pitch interval on the first electrode sheet by notching processing.

[0026] In the above method, the position of the first electrode sheet corresponding to the electrode ID in the notching process is acquired as the first coordinate value, and at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID can be corresponded to the first coordinate value.

[0027] The above coordinate-related electrode ID data is collected based on the first input amount of the first electrode sheet, the second input amount of the second electrode sheet, and the electrode ID detection signal,

[0028] The above electrode ID detection signal can be generated based on detection of the electrode ID.

[0029] The first input amount of the first electrode sheet may be calculated based on the pitch of the plurality of first electrodes and the cut count of the first electrode cutter, and the second input amount of the second electrode sheet may be calculated based on the pitch of the plurality of second electrodes and the cut count of the second electrode cutter.

[0030] The first input amount of the first electrode sheet may be determined by a first input amount signal generated by a first rotary encoder configured to detect a rotation amount of a first electrode unwinder configured to unwind the first electrode sheet, and the second input amount of the second electrode sheet may be determined by a second input amount signal generated by a second rotary encoder configured to detect a rotation amount of a second electrode unwinder configured to unwind the second electrode sheet.

[0031] The method may further include a step of acquiring coordinate values ​​representing positions on the first electrode sheet and the second electrode sheet for each process when the first electrode sheet and the second electrode sheet move while undergoing a predetermined process in a plurality of preceding processes prior to the electrode ID assignment step, and corresponding at least one of the coordinate values ​​of the first electrode sheet and the coordinate values ​​of the second electrode sheet in each of the processes to at least one of the electrode ID, the coordinate values ​​of the first electrode matched to the electrode ID, and the coordinate values ​​of the second electrode matched to the electrode ID.

[0032] At least one of the coordinate values ​​of the first electrode sheet and the coordinate values ​​of the second electrode sheet in each of the above processes may be a roll map coordinate value collected based on the input and / or exhausted amounts of the first electrode sheet or the second electrode sheet in a plurality of processes.

[0033] The method may further include a step of matching at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID with the ID of at least one upper battery assembly selected from the following and / or process event data acquired in a plurality of subsequent processes after the joining of the first electrode and the second electrode.

[0034] 1) Assembly ID of an electrode assembly including at least one combination of the first electrode and the second electrode

[0035] 2) Semi-finished product ID of a battery semi-finished product including the above electrode assembly

[0036] 3) Cell ID of the battery cell including the electrode assembly or battery semi-finished product

[0037] 4) Laminate ID of a battery cell laminate including a plurality of the above battery cells

[0038] 5) Module ID of the battery module including the above battery cell stack

[0039] 6) Pack ID of a battery pack including multiple battery modules

[0040] According to an exemplary embodiment, an electrode assembly may be provided, comprising at least one combination of a first electrode having an electrode ID and a second electrode having coordinate values ​​matching the electrode ID, and having an assembly ID corresponding to the electrode ID.

[0041] According to an exemplary embodiment, at least one upper battery assembly may be provided, comprising the electrode assembly, and selected from:

[0042] 1) Battery semi-finished product including the above electrode assembly

[0043] 2) A battery semi-finished product including the above electrode assembly and having a semi-finished product ID corresponding to the above assembly ID.

[0044] 3) Battery cell including the above electrode assembly or battery semi-finished product

[0045] 4) A battery cell including the electrode assembly or battery semi-finished product, and having a cell ID corresponding to the electrode assembly ID or semi-finished product ID.

[0046] 5) Battery cell stack including a plurality of the above battery cells

[0047] 6) A battery cell stack including a plurality of the above battery cells and having a stack ID corresponding to the above cell ID.

[0048] 7) Battery module including the above battery cell stack

[0049] 8) A battery module including the battery cell stack and having a module ID corresponding to the stack ID.

[0050] 9) Battery pack including a plurality of the above battery modules

[0051] 10) A battery pack including a plurality of the above battery modules and having a pack ID corresponding to the module ID.

[0052] According to exemplary embodiments of the present invention, traceability between the roll map generated during the electrode manufacturing process and semi-finished products, such as monocells and bicells, can be improved. Furthermore, traceability can also be improved between the semi-finished product assembly process and subsequent processes. Consequently, the reliability of battery manufacturing can be enhanced.

[0053] 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.

[0054] Figure 1 illustrates a battery manufacturing system according to exemplary embodiments.

[0055] Figure 2 illustrates a notching device according to exemplary embodiments.

[0056] Figures 3 and 4 illustrate a lamination apparatus according to exemplary embodiments.

[0057] Figure 5 shows the relative positions of elements with respect to the positive electrode sheet (ESP).

[0058] Figure 6 shows the relative positions of elements with respect to the cathode sheet (ESN).

[0059] Figure 7 shows roll maps generated from multiple preceding processes prior to the combining process.

[0060] Figure 8 shows data matched to roll map coordinate values.

[0061] Figure 9 illustrates a follow-up process event data matching unit according to exemplary embodiments.

[0062] Figure 10 illustrates data matching of a battery manufacturing system according to exemplary embodiments.

[0063] Figure 11 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068]

[0069] (Example 1)

[0070] Figure 1 illustrates a battery manufacturing system according to exemplary embodiments.

[0071] Figure 2 illustrates a notching device according to exemplary embodiments.

[0072] Figures 3 and 4 illustrate coupling devices according to exemplary embodiments.

[0073] Figure 5 shows the relative positions of elements with respect to the positive electrode sheet (ESP).

[0074] Figure 6 shows the relative positions of elements with respect to the cathode sheet (ESN).

[0075]

[0076] Figure 1 illustrates a battery manufacturing system (10) according to exemplary embodiments.

[0077] Referring to FIG. 1, the battery manufacturing system (10) may include a coating device (100), a roll pressing device (200), a slitting device (300), a notching device (400), a joining device (500), a subsequent process device (600), an EIF (1100), a server (1200), and a display device (1300).

[0078] The battery manufacturing system (10) can be configured to manufacture a battery cell (e.g., a pouch-shaped battery cell, a square battery cell, or a cylindrical battery cell) by performing a series of roll-to-roll processes.

[0079] The coating process, roll pressing process, and slitting process are electrode manufacturing processes that apply electrodes on electrode sheets and apply pressure. The notching process is a process of forming electrode tabs by processing electrode sheets, and the bonding process is a process of manufacturing unit cells such as mono cells or bi cells by stacking electrodes with formed electrode tabs. The notching process and the bonding process (e.g., lamination process, lamination and stacking process, lamination and folding process, zigzag stacking process such as ZZS (Zigzag stacking) or AZS (Advanced zigzag stacking)) are included in the assembly process.

[0080] In the lamination and stacking process (L&S process), the unit cells can be stacked again to form an electrode assembly in the form of a stack cell. In the lamination and folding process (L&F process), the unit cells are folded by a separator film to form an electrode assembly in the form of a folding cell.

[0081] In processes such as ZZS or AZS, electrodes having formed electrode tabs are sequentially laminated between zigzag-shaped separators, so that electrode bonding and lamination can be performed simultaneously to manufacture an electrode assembly.

[0082] In addition, the electrode assembly is housed in a cell housing and an electrolyte is injected to form a semi-finished battery cell. The semi-finished battery cell must be provided with certain electrical characteristics, such as an activation process, to become a finished battery cell. The manufactured finished battery cells can be bundled into multiple pieces to be manufactured into a battery module or a battery pack. In this way, in order to obtain finished products such as battery cells, battery modules, and battery packs, various subsequent processes, such as a lamination and stacking process, a lamination and folding process, a ZZS process, an AZS process, a housing insertion process, an injection process, an activation process, a modularization process, and a pack process, must be performed.

[0083] The present invention is characterized in that it collects electrode ID data associated with coordinates by associating an electrode ID assigned to one electrode sheet in a notching process with coordinate values ​​of a plurality of electrodes cut in a bonding process (e.g., a lamination process). By associating the electrode ID data with process event data from a plurality of preceding processes prior to the bonding process and a plurality of subsequent processes after the bonding process, quality tracking can be performed among process workpieces, semi-finished products, and finished products. The electrode ID data includes an electrode ID and corresponding coordinate data. By associating the coordinate data corresponding to the electrode ID with the coordinate values ​​of the plurality of preceding processes, process event data of the preceding processes associated with the coordinate values ​​can be consequently associated with the electrode ID data. In addition, the electrode ID data can be associated with the ID of an upper battery assembly including an electrode having the electrode ID. Since the upper battery assembly ID is associated with subsequent process event data acquired in a plurality of subsequent processes, the electrode ID data can also be consequently associated with the subsequent process event data.

[0084]

[0085] An electrode sheet unwound from an electrode roll fed into a coating device (coating process) can be processed by any one of a die coater of a coating device (100), a pressure roll of a roll pressing device (200), and a slitting knife of a slitting device (300), and the processed electrode sheet can be wound into an electrode roll. Accordingly, the processing of the coating device (100), the roll pressing device (200), and the slitting device (300) for producing electrodes can be referred to as a roll-to-roll process. An electrode roll fed into a notching device (400) can be wound into an electrode roll after being notched to form electrode tabs at a predetermined pitch interval and providing an electrode ID, which is an identification mark. Accordingly, the processing of the notching device (400) can also be referred to as a roll-to-roll process. A bonding device (e.g., a lamination device (500)) can laminate together a first electrode sheet rolled from a first electrode roll (e.g., a cathode roll), a second electrode sheet rolled from a second electrode roll (e.g., an anode roll), and a separator sheet rolled from separator rolls. Accordingly, processing by the lamination device (500) can also be referred to as a roll-to-roll process.

[0086] The coating device (100) can perform a coating process on an electrode sheet. The coating process can coat an electrode slurry on the electrode sheet. The electrode slurry can include an active material, a conductive agent, a binder, and a solvent. The electrode slurry can be provided by dissolving the active material, the conductive agent, the binder, and the like in a solvent.

[0087] A roll pressing device (200) can perform a roll pressing process on an electrode sheet. In the roll pressing process, an electrode sheet coated with electrode slurry can be passed between pressurized rolls. The roll pressing process can flatten the surface of the electrode sheet and enhance the bonding strength between the active material of the electrode sheet and the current collector.

[0088] A slitting device (300) can perform a slitting process on an electrode sheet. Through the slitting process, the electrode sheet can be separated into a plurality of electrode sheets.

[0089]

[0090] The EIF (1100) may be a device for communication between process controllers (e.g., process PLCs) of a manufacturing facility and a server (1200). The process PLC of the coating device (100), the process PLC of the roll pressing device (200), the process PLC of the slitting device (300), the process PLC of the notching device (400) (443, see FIG. 2), and the process controller (540, see FIG. 4) of the lamination device (500) may communicate with the server (1200) via the EIF (1100). Accordingly, data of process events occurring in the coating device (100), the roll pressing device (200), the slitting device (300), the notching device (400), and the lamination device (500) may be transmitted to the server (1200).

[0091] In addition, data of process events occurring from controllers of various subsequent process devices, such as a stacking process, a folding process, a housing insertion process, a pouring process, an activation process, a modularization process, and a pack process, may also be transmitted to the server (1200).

[0092] The server (1200) can store the electrode ID collected in the notching process and the coordinate value (first coordinate value described below) indicating the position of the electrode sheet in the notching process corresponding to the electrode ID.

[0093] The above server (1200) can also store electrode ID data associated with coordinates collected in the lamination process.

[0094] The server (1200) may be configured to generate or store a roll map containing data on process events. The roll map data may include values ​​representing process events and coordinate values ​​matching the values. The coordinate values ​​may indicate locations on the electrodes. Accordingly, the roll map enables feedback, feedforward, and battery manufacturing process tracking, as described below.

[0095] A roll map can be generated on a lot basis. A lot is a production unit of a roll-to-roll process. An electrode roll (or electrode assembly roll) separated after achieving the target winding length of each process is an example of a lot. Similarly, an electrode roll loaded into an unwinder of each process is also an example of a lot. The server (1200) can generate or store a roll map for each process (e.g., a coating process, a roll pressing process, a slitting process, or a notching process).

[0096] Time series data organized over time in a roll map (i.e., according to the progress of the process) can be associated with coordinate data collected based on the amount of movement of the electrode sheet (i.e., either the amount consumed or the amount injected).

[0097] Battery manufacturing involves a series of distinct processes, with leading processes influencing subsequent processes. However, if the time-series data from leading processes do not directly match real-world workpieces, intermediate products, and finished products, it can be difficult to reflect this data in subsequent processes. Hereinafter, the correction of subsequent processes based on data generated from the results of leading processes is referred to as feedforward.

[0098] Here, the workpiece refers to an article provided as a result of each process, such as an electrode sheet that has undergone a coating process, a roll pressing process, a slitting process, and a notching process. The intermediate product may refer to one of separators, electrodes, and assemblies thereof cut through a lamination process. The intermediate product may also be a structure including 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 battery through an activation process. The above definitions of the workpiece, intermediate product, and product are only one aspect thereof and do not exclude conventional definitions thereof.

[0099] Process events typically occur as the process progresses, making them time-series data. Accordingly, process event data may include values ​​representing the event and corresponding time values. Therefore, process event data may be time-series data.

[0100] For feedforward, time-series data must be associated with the positions of real-world workpieces, parts, semi-finished products, and finished products. Feedforward may involve controlling processing of electrode sheets based on a roll map generated in a previous process. The roll map may associate the time-series data with coordinate data, which includes coordinate values ​​representing the positions of real-world workpieces, parts, semi-finished products, and finished products. Based on the coordinate data, the roll map can provide a match between the time-series data and real-world workpieces, parts, semi-finished products, and finished products. Accordingly, the generation of the 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 productivity and quality.

[0101] 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 caused problems and defects based on the data contained in the roll map.

[0102] 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 an electrode ID of an electrode included in an electrode assembly, and a higher-level ID formed on the electrode assembly or housing. The IDs may include lot numbers and coordinate information of the electrodes and separators included in the battery cell. In other words, the IDs may be associated with the roll map of the electrodes and separators included in the battery cell. Accordingly, if an event such as a quality issue occurs in a battery cell that has already been shipped, the historical data of the manufacturing of the corresponding battery cell can be retrieved based on the IDs.

[0103] According to exemplary embodiments, the server (1200) may be a data processing system that supports various activities necessary for managing battery manufacturing, such as work schedule management, work instructions, quality control, and work performance aggregation. As such a data processing system, the server (1200) may include, for example, a Manufacturing Execution System (MES). The MES may be configured to input, process, output, and communicate data necessary for electrode manufacturing, such as coating processes, press processes, and manufacturing processes.

[0104] According to other exemplary embodiments, the server (1200) may be configured to store and process raw measurement data. The server (1200) can continuously monitor the processing of the electrode sheets based on the measurement data, thereby managing the quality of the electrode sheet processing. To this end, the server (1200) may include a Statistical Process Controller (SPC), which is an upper-level data processing system. The SPC collects and analyzes manufacturing data in near real-time, thereby promptly identifying problem conditions and alerting operators before potential problems occur.

[0105] According to other exemplary embodiments, the server (1200) may include, for example, a data warehouse, which is an upper-level data processing system. The data warehouse may store roll maps for a long period of time, such as based on the product's quality assurance period.

[0106] According to other exemplary embodiments, the server (1200) may perform all of the functions of MES, SPC, and data warehouse, or may be provided separately from MES, SPC, and data warehouse for roll map creation.

[0107] The server (1200) can generate a visualization command for visualizing a roll map. The server (1200) can transmit the visualization command to a display device (1300), and the display device (1300) can visualize the roll map and display the visualized roll map.

[0108]

[0109] Figure 2 illustrates a notching device (400) according to exemplary embodiments.

[0110] The notching process forms tabs in the electrode sheet and, if necessary, can form V-shaped grooves for cutting the electrode sheet. In the notching process, first electrode tabs (e.g., negative electrode tabs (TN)) and second electrode tabs (e.g., positive electrode tabs (TP)) can be formed.

[0111] In the notching process, electrode IDs (EIDs) may be formed on the first electrode tabs. The electrode IDs (EIDs) may be formed by methods such as laser printing and ink printing. Accordingly, each of the first electrode tabs (TN) may include an electrode ID (EID). Unlike the negative electrode tabs (TN), the positive electrode tabs (TP) may not include an electrode ID (EID) to prevent defects.

[0112] However, the electrode ID (EID) may not be limited thereto, and may include a symbol indicating the sequence number of the negative tabs (TN). The symbol of the electrode ID (EID) may include, but is not limited to, Arabic numerals. The symbol of the electrode ID (EID) may include any character that can provide information about the sequence number of the negative tabs (TN). The electrode ID may be a barcode or a QR code.

[0113] The notching device (400) may include an unwinder (411), a rewinder (413), a notching machine (415), an inspection and / or measuring device (431), a first rotary encoder (421), a second rotary encoder (423), an ID marking device (433), a first electrode ID reader (435), a roll map PLC (Programmable Logic Controller) (441), and a process PLC (443). The roll map PLC (441) and the process PLC (443) constitute a notching controller (440) of the notching device.

[0114] In the notching process, a first electrode sheet, such as a cathode sheet, may be notched, and a second electrode sheet, such as a positive electrode sheet, may be notched.

[0115] In the notching process, the first electrode unwinding roll (ER4) can be loaded onto the unwinder (411). The first electrode unwinding roll (ER4) can be a slitting unwinding roll that has been wound after a previous process, for example, a slitting process. The unwinder (411) can be configured to unwind the first electrode sheet (ES4) in the notching process from the first electrode unwinding roll (ER4). The rewinder (413) can be configured to wind the first electrode sheet (ES4) unwound from the unwinder (411) and notched onto the first electrode unwinding roll (ER5). The first electrode sheet (ES4) can be wound onto the first electrode unwinding roll (ER5) and cut and separated after reaching a predetermined unwinding length. Accordingly, in the notching process, the first electrode sheet (ES4) can move between the unwinder (411) and the rewinder (413).

[0116] The first rotary encoder (421) may be configured to detect the amount of the first electrode sheet (ES4) unwound from the first electrode unwinding roll (ER4) by the unwinder (411). The first rotary encoder (421) may be configured as a contact or non-contact type. The first rotary encoder (421) may be configured to generate an unwinding amount (input amount) signal (UWAS4) indicating the length of the first electrode sheet (ES4) unwound by the unwinder (411). The first rotary encoder (421) may be configured to transmit the unwinding amount signal (UWAS4) to the roll map PLC (441).

[0117] The second rotary encoder (423) may be configured to detect the amount of the first electrode sheet (ES4) wound onto the first electrode winding roll (ER5) by the rewinder (423). Accordingly, the second rotary encoder (423) may be configured to generate a winding amount (consumption amount) signal (WAS4) indicating the length of the first electrode sheet (ES4) wound by the rewinder (413). The second rotary encoder (423) may be configured to transmit the winding amount signal (WAS4) to the roll map PLC (441).

[0118] The notching machine (415) may be a device configured to mechanically punch out a metal foil on which an electrode active material is formed with a substantially uniform thickness and width, or to cut and remove a predetermined portion using a laser, in order to form an electrode tab. Any device known in the art to which the present invention pertains may be used as the notching machine (415). In some embodiments, the notching machine (415) may be a notching press device, and may include, for example, a driving unit configured to move a notching mold up and down at a predetermined cycle. As the notching mold descends, the edge of the first electrode sheet (ES4) may be punched at a predetermined pitch to form an electrode tab (lead tab) of a predetermined shape (for example, a rectangle).

[0119] After the notching process, an ID marking device (433) can mark an electrode ID (EID) on each electrode tab. Examples of the ID marking device (433) include, but are not limited to, an inkjet ink marking device or a laser marking device. Any appropriate marking device can be selected and used as long as it has excellent visibility and does not damage the electrodes.

[0120] The first electrode ID reader (435) may be configured to detect an electrode ID (EID). The first electrode ID reader (435) may be configured to read a sequence number indicated by the electrode ID (EID). The first electrode ID reader (435) may be, for example, a bar code reader (BCR), but is not limited thereto. The first electrode ID reader (435) may also be an optical character reader (OCR). The first electrode ID reader (435) may be configured to generate an electrode ID detection signal (EIDS) based on detection of the electrode ID (EID). The first electrode ID reader (435) may be configured to transmit the electrode ID detection signal (EIDS) to the controller (440).

[0121] Meanwhile, the ID marking device (433) or the first electrode ID reader (435) can obtain the sequence (count) information of the electrode ID by having a tap sensor and a trigger board.

[0122] The tap sensor can determine the length of each electrode tap, i.e., the pitch. The trigger board can increase a count value based on the length of each electrode tap received from the tap sensor. The trigger board can convert the count value for each electrode tap length into the form of a BCD code and send it to the ID marking device (433), the first electrode ID reader (435), or the notching controller (440).

[0123] In this way, the ID marking device (433) or the first electrode ID reader (435) receives the standard information (pitch information) of the electrode, acquires a count value (sequence information) for each pitch, and can mark the electrode ID or recognize the electrode ID for each electrode tab of the corresponding pitch.

[0124] The inspection and / or measuring device (431) may be configured to inspect or measure the first electrode sheet (ES4) to collect inspection and / or measurement data of the first electrode sheet (ES4). The inspection and / or measuring device may inspect and / or measure the first electrode sheet (ES4) in a scanning manner. In some embodiments, the inspection and / or measuring device may move along the width direction of the first electrode sheet (ES4). The inspection and / or measuring device (431) may include a sensing unit (431S) and a processing unit (431P). The sensing unit (431S) may be configured to detect a physical quantity of the first electrode sheet (ES4) to generate an inspection and / or measurement signal (MS4). The sensing unit (431S) and the processing unit (431P) may be connected by wire or wirelessly.

[0125] For example, the sensing unit (431S) may include an imaging device such as a Time Delay and Integration (TDI) camera, a Complementary Metal Oxide Semiconductor (CMOS) image sensor, etc. The sensing unit (431S) may be configured to generate an inspection signal (IS) representing the surface of the first electrode sheet (ES4). The sensing unit (131S) may be configured to transmit an inspection and / or measurement signal (MS4) to the processing unit (131P). The inspection and / or measurement signal (MS4) may include, for example, an image of the surface of the first electrode sheet (ES4).

[0126] The processing unit (431P) may be configured to collect the inspection and / or measurement signal (MS4) generated by the sensing unit (431S) to generate inspection and / or measurement data. The processing unit (431P) may be configured to collect coordinate-related inspection and / or measurement data (CMD4) based on the inspection and / or measurement signal (MS4) and the coordinate data (CD4). The processing unit (431P) may be configured to transmit the coordinate-related inspection and / or measurement data (CMD4) to the rollmap PLC (441).

[0127] The roll map PLC (441) may be configured to collect coordinate data (CD4) of the first electrode sheet (ES4) based on either the winding amount data or the winding amount data of the first electrode sheet (ES4). For example, the moving distance of the first electrode sheet (ES4) may be determined, and accordingly, the position of the portion of the first electrode sheet (ES4) wound by the rewinder (413) at each point in time during which the notching process is performed may be determined.

[0128] The coordinate data (CD4) may include coordinate values ​​that match each portion of the first electrode sheet (ES4). That is, each arbitrary point on the first electrode sheet (ES4) may be matched with a coordinate value. The coordinate value may be a one-dimensional quantity in the progress direction of the first electrode sheet (ES4), but is not limited thereto. The coordinate value may also be a two-dimensional quantity in the Y direction of the progress direction and the transverse direction of the first electrode sheet (ES4).

[0129] The rollmap PLC (441) may be in operative communication with the first and second rotary encoders (421, 423), the inspection and / or measuring device (431), the ID marking device (433), and the ID reader (435) 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 rotary encoders (421, 423), the inspection and / or measuring device (431), the ID marking device (433), and the ID reader (435) may be configured to collect data from equipment, workpieces, semi-finished products, and products within the notching device, or to generate signals for collecting data.

[0130] The rollmap PLC (441) may be configured to transmit coordinate data (CD4) to the processing unit (431P). The processing unit (431P) may be configured to associate the inspection and / or measurement data with the coordinate data (CD4) to generate coordinate-associated inspection and / or measurement data (CMD4). Typically, the inspection and / or measurement data may be processed based on a trigger point. Examples of processing the inspection and / or measurement data may include storing, manipulating (e.g., generating coordinate-associated inspection and / or measurement data (CMD4)), and transmitting the inspection and / or measurement data.

[0131] As a non-limiting example, the trigger point for processing inspection and / or measurement data may be the completion of a scan. For example, the sensing unit (431S) may scan the sheet material in the width direction of the first electrode sheet (ES4), and inspection and / or measurement data may be stored, processed, modulated, and transmitted for each scan. In another example, the trigger point may be the completion of multiple scans or the completion of a portion of a scan.

[0132] The coordinate-related inspection and / or measurement data (CMD4) transmitted to the roll map PLC (441) may be transmitted to the server (1200) via the process PLC (443). Although not shown in FIG. 2, the coordinate-related inspection and / or measurement data (CMD4) may be transmitted from the process PLC (443) to the server (1200) via the EIF (1100) (see FIG. 1).

[0133] The process PLC (443) and EIF (145) can relay the communication of data including inspection and / or measurement data (CMD4) between the server (1200) and the roll map PLC (441). However, this is not limited thereto, and the roll map PLC (441) can also directly transmit coordinate-related inspection and / or measurement data (CMD4) to the server (1200).

[0134] The process PLC (443) may be configured to control the operation of the unwinder (111), the rewinder (113), the notching machine (415), the ID marking machine (433), and the ID reader (435). The process PLC (143) may be configured to generate signals for operation and stop of the unwinder (111), the rewinder (113), and the coater (115). The process PLC (143) may be configured to generate signals for operation and stop of the unwinder (111), the rewinder (113), the notching machine (415), the ID marking machine (433), and the ID reader (435). The signals may be generated based on a body including details of a product ID and a manufacturing recipe.

[0135] The above-described notching controller (1400) may be configured to collect coordinate-related electrode ID data including the electrode ID (EID) and a first coordinate value which is a position of the first electrode sheet (ES4) in the notching process matched to the electrode ID. The first coordinate value may be acquired based on a signal of the winding amount and / or the winding amount of the first electrode sheet (ES4) when the electrode ID is detected in the notching process.

[0136] The first electrode ID reader (435) may be configured to generate an electrode ID detection signal (EIDS) based on detection of an electrode ID (EID). The electrode ID reader (435) may be configured to transmit the electrode ID detection signal (EIDS) to a notching controller (440).

[0137] Specifically, the first electrode ID reader (435) detects a specific electrode ID on the first electrode sheet (ES4) and transmits an electrode ID detection signal (EIDS) to the roll map PLC (441) of the notching controller (440). The roll map PLC (441) can collect a coordinate value (first coordinate value) which is a position of a portion of the first electrode sheet (ES4) corresponding to the electrode ID (EID) from the unwinding amount signal (UWAS4) of the first electrode sheet or the unwinding amount signal (WAS4) of the first electrode sheet at the time of sensing the electrode ID detection signal. That is, in the notching process, the notching controller (440) can collect coordinate-related electrode ID data (EIDD1) including the electrode ID and the first coordinate value matched with the electrode ID. The coordinate-related electrode ID data in the notching process may be distinguished from the coordinate-related electrode ID data in the lamination process described below, and the former may be referred to as first coordinate-related electrode ID data (EIDD1) and the latter as second coordinate-related electrode ID data (EIDD2). The former first coordinate-related electrode ID data (EIDD1) may include an electrode ID and a first coordinate value.

[0138] According to an exemplary embodiment, the position of the first electrode sheet (ES4) at the time when the first electrode ID reader (435) senses the electrode ID and the position of the first electrode sheet (ES4) based on the winding amount data detected by the first rotary encoder (421) or the winding amount data detected by the second rotary encoder (423) may be different.

[0139] According to exemplary embodiments, the first coordinate value may be a value obtained by subtracting an offset distance, which is a length from the unwinder (411) to the first electrode ID reader (435), from the coordinate value of the first electrode sheet (ES4) based on the output data detected by the first rotary encoder (421) at the sensing point.

[0140] Alternatively, according to exemplary embodiments, the first coordinate value may be a value obtained by adding an offset distance, which is a length from the rewinder (413) to the first electrode ID reader (435), to the coordinate value of the first electrode sheet (ES4) based on the winding amount data detected by the second rotary encoder (423) at the sensing point.

[0141] The first coordinate value may be one of a start coordinate value, an end coordinate value, and a coordinate value of an electrode tab of a portion of a first electrode sheet (ES4) having a predetermined pitch and having an electrode tab on which the electrode ID (EID) is marked. Alternatively, the first coordinate value may include two or more of a start coordinate value, an end coordinate value, and a coordinate value of an electrode tab of a portion of a first electrode sheet (ES4) having a predetermined pitch and having an electrode tab on which the electrode ID is marked.

[0142] The first coordinate-related electrode ID data (EIDD1), which includes the first coordinate value and the electrode ID matched thereto, is transmitted from the roll map PLC (441) to the process PLC (443) and then to the server (1200).

[0143] In order to control the process, a communication line may be installed between the process PLC (443) and the server (1200) via the EIF (1100) and connecting the process PLC (443) and the first server (1210). Accordingly, data transmission through the process PLC (443) can reduce resources required for installation of the communication line and can improve data processing and management efficiency compared to the case where the first and second rotary encoders (421, 423) and the inspection and / or measuring device (430) directly transmit the winding amount signal (UWAS4), the winding amount signal (WAS4), and the inspection and / or measuring signal (MS4) to the first server (1210) and the roll map PLC (441) directly transmits various data to the first server (1210).

[0144]

[0145] The above server may include a first server (1210), a second server (1220), and a third server (1230).

[0146] The first server (1210) may be configured to generate a roll map for the notching process. In addition, the first server (1210) may generate a roll map for a preceding process prior to the notching process, such as a coating process, a roll pressing process, or a slitting process (see FIG. 7).

[0147] A roll map can be generated for each lot formed by winding and cutting sheet material. The roll map can include data regarding specifications of the lot. The specifications of the lot can include, for example, a lot number, a length of the wound sheet material, a width of the sheet material, and materials and compositions used in processing the sheet material. The first server (1210) can be configured to generate a roll map of a first electrode winding roll (ER5) on which a notched first electrode sheet (ES4) is wound, based on coordinate-related inspection and / or measurement data (CMD4) transmitted from the process PLC (443) and additional process event data. The roll map can display process event data and coordinate values ​​matched thereto together.

[0148] According to exemplary embodiments, the first server (1210) 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 first server (1210) may be, for example, a Manufacturing Execution System (MES). The first server (1210) may be configured to input, process, output, and communicate data necessary for electrode manufacturing, such as a coating process, a roll pressing process, a slitting process, and a notching process.

[0149] The first server (1210) can generate a visualization command for visualizing a roll map. The first server (1210) can transmit the visualization command to a display device, and the display device can visualize the roll map as shown in FIG. 7 and display the visualized roll map.

[0150] In addition, the first server (1210) may receive first coordinate-related electrode ID data (EIDD1) from the notching controller (440). The first coordinate-related electrode ID data (EIDD1) includes an electrode ID (EID) and a first coordinate value associated therewith. Therefore, by finding and matching the coordinate values ​​of the actual electrode sheet corresponding to the first coordinate value in the preceding process before the notching process, the coordinate values ​​of the portion of the electrode sheet corresponding to the electrode ID (EID) in the notching process can be matched with the electrode ID in the preceding process. In addition, the roll maps of the preceding process include various process event data and roll map coordinate values ​​of the preceding process, as shown in FIG. 7. Therefore, by matching the first coordinate value and the roll map coordinate values, the roll map information of the preceding process corresponding to a specific electrode ID can be utilized to search for process event data of the preceding process, for example, when there is a quality-related issue.

[0151] In addition, as described below, if the first coordinate-related electrode ID data (EIDD1) is matched with the second coordinate-related electrode ID data (EIDD2) in the lamination process and the ID of the upper battery assembly in the subsequent process, it becomes possible to link or track data in almost all processes of battery manufacturing.

[0152] The second server (1220) may be configured to store and process coordinate-related inspection and / or measurement data (CMD4) and first coordinate-related electrode ID data (EIDD1). The second server (1220) may continuously monitor the processing of the sheet material based on the stored data, thereby managing the quality of the processing of the sheet material. According to exemplary embodiments, the second server (1220) may be a Statistical Process Controller (SPC). The second server (1220) may collect and analyze manufacturing data in near real-time, thereby timely identifying problem conditions and providing alerts to operators before potential problems occur.

[0153] The third server (1230) may be configured to store coordinate-related measurement data (CMD4) and first coordinate-related electrode ID data (EIDD1) transmitted from the second server (1220). If the first server (1210) is an MES and the second server (1220) is an SPC, it may not be suitable for long-term storage of the associated data. The third server (1230) may be, for example, a data warehouse, and may store coordinate-related measurement data (CMD4) and first coordinate-related electrode ID data (EIDD1) for a long period of time based on the quality assurance period of the product, etc.

[0154]

[0155] Referring to FIGS. 3 to 6, the lamination device (500) may include a positive electrode unwinder (511P), a negative electrode unwinder (511N), and separator unwinders (511S1, 511S2), electrode cutters (513P, 513N), guide rolls (515), a separator cutter (517), rotary encoders (521P, 521N), seam sensors (523P, 523N), an electrode gap sensor (525), a second electrode ID reader (527), a controller (540), and servers (1210, 1220, 1230).

[0156] The lamination device (500) may be configured to perform, for example, a lamination and stacking process. As a result of the lamination process, mono cells (MC) may be provided. Each mono cell (MC) may include an anode (EPP), a cathode (EPN), and separators. In the stacking process, mono cells (MC) and additional half cells may be vertically stacked, thereby providing an electrode assembly.

[0157] The lamination process is a subsequent process to the notching process. Therefore, the first electrode winding roll (ER5) and the second electrode winding roll completed in the notching process are loaded onto the unwinder of the lamination process. At this time, the electrode sheet having the electrode ID (EID) on the electrode tab by the ID marking in the notching process becomes the first electrode sheet. In the present embodiment, since the electrode ID (EID) is given to the negative electrode tab in the notching process, the negative electrode sheet and the negative electrode also become the first electrode sheet and the first electrode in the lamination process. The positive electrode sheet is notched in the notching process and has a positive electrode tab, but since the electrode ID is not given, the positive electrode sheet and the positive electrode become the second electrode sheet and the second electrode in the lamination process. Conversely, if the electrode ID is assigned to the positive tab in the notching process and the electrode ID is not assigned to the negative tab, the positive electrode sheet and the positive electrode may become the first electrode sheet and the first electrode, and the negative electrode sheet and the negative electrode may become the second electrode sheet and the second electrode in the lamination process.

[0158] Unwinders (511P, 511N, 511S1, 511S2) may be configured to feed roll-shaped materials into the lamination device (500). More specifically, the unwinder (511P) may be configured to unwind a positive electrode sheet (ESP) from a positive electrode roll (ERP), the unwinder (511N) may be configured to unwind a negative electrode sheet (ESN) from a negative electrode roll (ERN), and the unwinders (511S1, 511S2) may be configured to unwind separator sheets (SS1, SS2) from separator rolls (SR1, SR2).

[0159] The positive electrode roll (ERP) and the negative electrode roll (ERN) can be provided through a series of processes for battery manufacturing. For example, the positive electrode roll (ERP) and the negative electrode roll (ERN) can be provided through a coating process, a roll pressing process, an optional slitting process, and a notching process.

[0160] To increase the production capacity (e.g., GWh) per line of a battery production facility, a coating process and a roll pressing process are performed on wide electrode sheets. In the subsequent slitting process, the wide electrode sheets can be cut to the specifications of the battery cell. Depending on the specifications of the battery cell, the slitting process may be omitted.

[0161] The positive electrode cutter (513P) may be configured to cut the positive electrode sheet (ESP). A plurality of positive electrodes (EPP) may be provided by cutting the positive electrode sheet (ESP). The negative electrode cutter (513N) may be configured to cut the negative electrode sheet (ESN). A plurality of negative electrodes (EPN) may be provided by cutting the negative electrode sheet (ESN).

[0162] The controller (540) can control the operations of the positive cutter (513P) and the negative cutter (513N) as described below, and accordingly can be configured to count the cuts of the positive sheet (ESP) by the positive cutter (513P) and the cuts of the negative sheet (ESN) by the negative cutter (513N). For example, the controller (540) can be configured to receive a first cut count signal (CCSN) from the negative cutter (513N) and can be configured to receive a second cut count signal (CCSP) from the positive cutter (513P).

[0163] The guide rolls (515) may be configured to define a path of the separator sheets (SS1, SS2). The separator sheets (SS1, SS2) may be aligned in parallel by the guide rolls (515). The positive electrodes (EPP) and the negative electrodes (EPN) may be placed on the separator sheets (SS1, SS2). For example, the negative electrodes (EPN) may be placed on the separator sheet (SS2), and the positive electrodes (EPP) may be placed on the separator sheet (SS1). The positive electrodes (EPP) and the negative electrodes (EPN) may be electrically and physically separated by the separator sheet (SS1).

[0164] The separator cutter (517) may be configured to cut the separator sheets (SS1, SS2). Before cutting the separator sheets (SS1, SS2) by the separator cutter (517), the laminated structure of the separator sheets (SS1, SS2), the positive electrodes (EPP), and the negative electrodes (EPN) may be pressed by a nip roll (not shown) or the like. By cutting the separator sheets (SS1, SS2), a mono cell (MC) including the positive electrodes (EPP), the negative electrodes (EPN), and the separators may be provided.

[0165] The first rotary encoder (521N) may be configured to detect the rotational amount of the unwinder (511N). The first rotary encoder (521N) may be configured to detect the amount of the negative sheet (ESN) unwound from the negative roll (ERN) by the unwinder (511N). Accordingly, the first rotary encoder (521N) may be configured to generate a first input amount signal (UWSN) indicating the length of the negative sheet (ESN) unwound by the unwinder (511N) (i.e., the input amount of the negative sheet (ESN)). The first rotary encoder (521N) may be configured to transmit the first input amount signal (UWSN) to the controller (540).

[0166] The second rotary encoder (521P) may be configured to detect the rotational amount of the unwinder (511P). The second rotary encoder (521P) may be configured to detect the amount of the positive electrode sheet (ESP) unwound from the positive electrode roll (ERP) by the unwinder (511P). Accordingly, the second rotary encoder (521P) may be configured to generate a second input amount signal (UWSP) indicating the length of the positive electrode sheet (ESP) unwound by the unwinder (511P) (i.e., the input amount of the positive electrode sheet (ESP)). The second rotary encoder (521P) may be configured to transmit the second input amount signal (UWSP) to the controller (540).

[0167] The first seam detection sensor (523N) may be configured to detect a seam of the negative electrode sheet (ESN). Here, the negative electrode sheet (ESN) may include a seam when the negative electrode roll (ERN) is replaced (i.e., when a subsequent negative electrode roll (ERN) is loaded into the unwinder (511N), when a breakage of the electrode occurs during the self-process (i.e., processing of the negative electrode sheet (ESN) by the lamination device (500), and when a breakage of the electrode occurs during the pre-process (i.e., processing of the negative electrode roll (ERN) before being loaded into the unwinder (511N).

[0168] The first seam detection sensor (523N) may be, for example, a color sensor, but is not limited thereto. The first seam detection sensor (523N) may be configured to generate a first seam detection signal (JSSN). The first seam detection signal (JSSN) may be transmitted to the controller (540).

[0169] The second seam detection sensor (523P) may be configured to detect a seam of the positive electrode sheet (ESP). Here, the positive electrode sheet (ESP) may include a seam when the positive electrode roll (ERP) is replaced (i.e., when a subsequent positive electrode roll (ERP) is loaded into the unwinder (511P), when a breakage of the electrode occurs during the self-process (i.e., processing of the positive electrode sheet (ESP) by the lamination device (500), and when a breakage of the electrode occurs during the pre-process (i.e., processing of the positive electrode roll (ERP) before being loaded into the unwinder (511P).

[0170] The second seam detection sensor (523P) may be, for example, a color sensor, but is not limited thereto. The second seam detection sensor (523P) may be configured to generate a second seam detection signal (JSSP). The second seam detection signal (JSSP) may be transmitted to the controller (540).

[0171] The electrode gap sensor (525) may be configured to detect the gap between the anodes (EPP) and the cathodes (EPN). For example, the electrode gap sensor (525) may be configured to detect the gaps between the anodes (EPP). For another example, the electrode gap sensor (525) may be configured to detect the gaps between the cathodes (EPN). For another example, the electrode gap sensor (525) may be configured to detect each of the gaps between the anodes (EPP) and the gaps between the cathodes (EPN).

[0172] The electrode gap sensor (525) may be configured to generate a gap detection signal (ISS). The electrode gap sensor (525) may be configured to transmit the gap detection signal (ISS) to the controller (540).

[0173] The second electrode ID reader (527) may be configured to detect the electrode ID (EID). The second electrode ID reader (527) may be configured to read out a sequence number indicated by the electrode ID (EID). The second electrode ID reader (527) may be, for example, a bar code reader (BCR), but is not limited thereto. The second electrode ID reader (527) may also be an optical character reader (OCR). The second electrode ID reader (527) may be configured to generate an electrode ID detection signal (EIDS) based on detection of the electrode ID (EID). The second electrode ID reader (527) may be configured to transmit the electrode ID detection signal (EIDS) to the controller (540).

[0174] The controller (540) may be configured to control elements of the lamination device (500), such as, for example, unwinders (511P, 511N, 511S1, 511S2), anode cutter (513P), cathode cutter (513N), and separator cutter (517).

[0175] The controller (540) may be in operative communication with the rotary encoders (521P, 521N), the seam detection sensors (523P, 523N), the electrode gap sensor (525), and the second electrode ID reader (527) via a wired or wireless data network. The data network may be unidirectional or bidirectional. The rotary encoders (521P, 521N), the seam detection sensors (523P, 523N), the electrode gap sensor (525), and the second electrode ID reader (527) may be configured to collect data from equipment, workpieces, semi-finished products, and finished products within the lamination apparatus (500), or to generate signals for collecting data.

[0176] As a non-limiting example, the controller (540) may be a Programmable Logic Controller (PLC). A PLC is a specialized type of microprocessor-based controller that uses programmable memory to store instructions and implement functions such as logic, sequencing, timing, counting, and arithmetic to control machines and processes. PLCs are easy to operate and program.

[0177] The controller (540) may include a power supply, a CPU, an input interface, an output interface, a communication interface, and memory devices. For the operation of the controller (540), it may be configured to supply power to other elements of the controller (540), such as the CPU, the input interface, the output interface, the communication interface, and the memory devices. The communication interface may be configured to transmit and receive data between the controller (540) and the server (1200).

[0178] However, it is not limited thereto, and the controller (540) may include any one of a simple controller, a microprocessor, a complex processor such as a CPU, a GPU, a processor configured by software, dedicated hardware, and firmware.

[0179] The cutting of the positive cutter (513P) and the negative cutter (513N) can be performed based on a pitch, which is a constant repeating unit. The pitch can be the minimum unit length in which the same shape and structure are repeated, such as the length in the running direction between the positive tabs (TP) of adjacent positive electrodes (EEP). The positive electrode sheet (ESP) is cut to substantially the same target length, and the amount of the positive electrode sheet (ESP) input can be proportional to the cut count (e.g., the cut count signal (CCSP)) of the positive electrode cutter (513P). Similarly, the negative electrode sheet (ESN) is cut to substantially the same target length, and the amount of the negative electrode sheet (ESN) input can be proportional to the cut count (e.g., the cut count signal (CCSN)) of the negative electrode cutter (513N).

[0180] More specifically, the input amount of the positive electrode sheet (ESP) may be the sum of the product of the cut count Cutcount_P and the pitch Pitch_P and the offset length (OLP1), as in Equation 1. Here, the offset length (OLP2) may be the length of the positive electrode sheet (ESP) between the unwinder (511P) and the positive electrode cutter (513P).

[0181] [Formula 1]

[0182]

[0183] Similarly, the input amount of the negative sheet (ESN) may be the sum of the product of the cut count Cutcount_N and the pitch Pitch_N and the offset length (OLN2), as in Equation 2. Here, the offset length (OLN2) may be the length of the negative sheet (ESN) between the unwinder (511N) and the negative cutter (513N).

[0184] [Formula 2]

[0185]

[0186] In another example, the input amount of the negative sheet (ESN) can be determined from the first input amount signal (UWSN) of the first rotary encoder (521N), and the input amount of the positive sheet (ESP) can be determined from the second input amount signal (UWSP) of the second rotary encoder (521P).

[0187] The amount of the positive electrode sheet (ESP) input may indicate the relative position of a portion of the positive electrode sheet (ESP) unwound by the unwinder (511P) within the positive electrode sheet (ESP). The controller may be configured to determine the coordinates of an event occurring in the positive electrode sheet (ESP) based on the amount of the positive electrode sheet (ESP) input and the offset lengths (OLP1, OLP2, OLP3). The controller may be configured to determine the coordinates of an event occurring in the negative electrode sheet (ESN) based on the amount of the negative electrode sheet (ESN) input and the offset lengths (OLN1, OLN2, OLN3).

[0188] For example, the coordinate values ​​of a portion of the positive sheet (ESP) detected by the seam sensor (521P) (i.e., the coordinate values ​​of the positive sheet (ESP) from which the seam detection signal (JSSP) originates) can be determined by calculating (e.g., adding or subtracting) the input amount of the positive sheet (ESP) and the offset length (OLP1). The offset length (OLP1) can be the length of the positive sheet (ESP) between the unwinder (511P) and the portion of the positive sheet (ESP) detected by the seam sensor (521P).

[0189] For example, the coordinate values ​​of a portion of the positive electrode sheet (ESP) cut by the positive electrode cutter (513P) can be determined by calculating (e.g., adding or subtracting) the input amount of the positive electrode sheet (ESP) and the offset length (OLP2). The offset length (OLP2) can be the length of the positive electrode sheet (ESP) between the portion of the positive electrode sheet (ESP) cut by the unwinder (511P) and the positive electrode cutter (133P).

[0190] For example, the coordinate value (e.g., converted coordinate value or equivalent coordinate value) of the positive electrode (EPP) coupled with the negative electrode (EPN) detected by the second electrode ID reader (527) can be determined by calculating (e.g., adding or subtracting) the input amount of the positive electrode sheet (ESP) and the offset length (OLP3). The offset length (OLP3) can be the length (e.g., converted length or equivalent length) of the positive electrode sheet (ESP) between the negative electrode (EPN) detected by the unwinder (511P) and the positive electrode (EPP) coupled with the negative electrode (EPN) detected by the second electrode ID reader (527).

[0191] At this time, there are anodes (EPP) rather than anode sheets (ESP) between the anode cutter (513P) and the second electrode ID reader (527). Therefore, the offset length (OLP3) is not the length of the actual anode sheet (ESP), but may be calculated based on the cut count of the anode cutter (513P) or may be an equivalent length determined from the second input amount signal (UWSP).

[0192] The amount of input of the negative electrode sheet (ESN) can indicate the relative position of a portion of the negative electrode sheet (ESN) unwound by the unwinder (511N) within the negative electrode sheet (ESN). Based on the amount of input of the negative electrode sheet (ESN), the coordinate value of an event occurring in the negative electrode sheet (ESN) can be determined.

[0193] For example, the coordinate values ​​of a portion of the negative sheet (ESN) detected by the seam sensor (521N) (i.e., the coordinate values ​​of the negative sheet (ESN) from which the seam detection signal (JSSN) originates) can be determined by calculating (e.g., adding or subtracting) the input amount of the negative sheet (ESN) and the offset length (OLN1). The offset length (OLN1) can be the length of the negative sheet (ESN) between the unwinder (511N) and the portion of the negative sheet (ESN) detected by the seam sensor (521N).

[0194] For example, the coordinate values ​​of a portion of the negative electrode sheet (ESN) cut by the negative electrode cutter (513N) can be determined by calculating (e.g., adding or subtracting) the input amount of the negative electrode sheet (ESN) and the offset length (OLN2). The offset length (OLN2) can be the length of the negative electrode sheet (ESN) between the portion of the negative electrode sheet (ESN) cut by the unwinder (511N) and the negative electrode cutter (133N).

[0195] For example, the coordinate value (e.g., converted coordinate value or equivalent coordinate value) of the negative electrode (EPN) detected by the second electrode ID reader (527) can be determined by calculating (e.g., adding or subtracting) the input amount of the negative electrode sheet (ESN) and the offset length (OLN3). The offset length (OLN3) can be the length (e.g., converted length or equivalent length) of the negative electrode sheet (ESN) between the unwinder (511N) and the negative electrode (EPN) detected by the second electrode ID reader (527).

[0196] At this time, there are cathodes (EPN) rather than cathode sheets (ESN) between the cathode cutter (513N) and the second electrode ID reader (527). Therefore, the offset length (OLN3) is not the length of the actual cathode sheet (ESP), but may be calculated based on the cut count of the cathode cutter (513N) or may be an equivalent length determined from the first input signal (UWSN).

[0197] The coordinate values ​​of the positive electrode sheet (ESP) can be matched to each part of the positive electrode sheet (ESP). That is, each arbitrary point on the positive electrode sheet (ESP) can have a coordinate value. The coordinate value may be a one-dimensional quantity in the running direction (MD) (or longitudinal direction) of the sheet material (SM), but is not limited thereto. The coordinate value may also be a two-dimensional quantity in the running direction (MD) and the transverse direction (or width direction) of the positive electrode sheet (ESP).

[0198] The coordinate values ​​of the negative electrode sheet (ESN) can be matched to each part of the negative electrode sheet (ESN). That is, each arbitrary point on the negative electrode sheet (ESN) can have a coordinate value. The coordinate value may be a one-dimensional quantity in the running direction (MD) (or longitudinal direction) of the sheet material (SM), but is not limited thereto. The coordinate may also be a two-dimensional quantity in the running direction (MD) and the transverse direction (or width direction) of the negative electrode sheet (ESN).

[0199] The controller (540) may be configured to collect second coordinate-related electrode ID data (EIDD2) based on the electrode ID detection signal (EIDS), the dosage of the positive electrode sheet (ESP), and the dosage of the negative electrode sheet (ESN). The dosage of the negative electrode sheet (ESN) may be calculated based on the cut count of the negative electrode cutter (513N), as described above, or may be determined by the first dosage signal (UWSN).

[0200] The amount of the positive electrode sheet (ESP) input can be calculated based on the cut count of the positive electrode cutter (513P) as described above, or can be determined by the second input amount signal (UWSP).

[0201] According to exemplary embodiments, the controller (540) can determine the coordinate values ​​of the cathode (EPN) detected by the second electrode ID reader (527) through calculation of the amount of the cathode sheet (ESN) injected and the offset length (OLN3). The controller (540) can be configured to match the coordinate values ​​of the cathode (EPN) detected by the second electrode ID reader (527) with the electrode ID detection signal (EIDS).

[0202] According to exemplary embodiments, the controller (540) may be configured to determine the coordinate values ​​of the positive electrode (EPP) coupled with the negative electrode (EPN) detected by the second electrode ID reader (527) through calculation of the input amount of the positive electrode sheet (ESP) and the offset length (OLP3). The controller (540) may be configured to match the coordinate values ​​of the positive electrode (EPP) coupled with the negative electrode (EPN) detected by the second electrode ID reader (527) with an electrode ID detection signal (EIDS).

[0203] Here, the coordinate value of the cathode (EPN) may be any one of the start coordinate value, the end coordinate value of the cathode (EPN), and the coordinate value of the cathode tab (TN). The coordinate value of the cathode (EPN) may include two or more of the start coordinate value, the end coordinate value of the cathode (EPN), and the coordinate value of the cathode tab (TN). In addition, the coordinate value of the anode (EPP) may be any one of the start coordinate value, the end coordinate value of the anode (EPP), and the coordinate value of a portion of the anode (EPP) that overlaps the cathode tab (TN). In addition, the coordinate value of the anode (EPP) may include two or more of the start coordinate value, the end coordinate value of the anode (EPP), and the coordinate value of a portion of the anode (EPP) that overlaps the cathode tab (TN).

[0204] In order to match the electrode ID (EID) and the coordinate values ​​of the positive electrode sheet (ESP) and the negative electrode sheet (ESN), the lot number of the positive electrode roll (ERP) from which the positive electrode sheet (ESP) is unwound and the lot number of the positive electrode roll (ERN) from which the negative electrode sheet (ESN) is unwound must be determined. The seam detection signal (JSSP) and the seam detection signal (JSSN) can be used to distinguish the lots. According to exemplary embodiments, the controller (540) can update the lot numbers of the positive electrode roll (ERP) and the negative electrode roll (ERN) based on the seam detection signal (JSSP) and the seam detection signal (JSSN). Accordingly, the coordinate values ​​of the negative electrode sheet (ESN) and the coordinate values ​​of the positive electrode sheet (ESP) can be reset based on the seam detection signal (JSSP) and the seam detection signal (JSSN).

[0205] The offset length (OLP1) and the offset length (OLN1) may be used to update the lot number and reset the coordinate values ​​of the negative sheet (ESN) and the positive sheet (ESP). Here, the offset length (OLP1) may be the length of the positive sheet (ESP) between the unwinder (511P) and the seam sensor (521P). Here, the offset length (OLN1) may be the length of the negative sheet (ESN) between the unwinder (511N) and the seam sensor (521N).

[0206] More specifically, when a new anode roll (ERP) is loaded into the unwinder (511P), in order to continue the roll-to-roll process, the anode roll (ERP) must be connected to the anode sheet (ESP) of the remaining previous lot using a seam. For example, after loading the anode roll (ERP) of a new lot into the unwinder (511P), a portion of the anode sheet (ESP) subsequent to the seam of the anode sheet (ESP) that is sensed for the first time can be determined to have been unwound from the newly loaded anode roll (ERP). Accordingly, when a seam detection signal (JSSP) is generated after loading a new anode roll (ERP), the controller (540) can be configured to match the electrode ID (EID) to the coordinate values ​​of the anode sheet (ESP) of the subsequent lot. The electrode ID (EID) of each of the cathodes (EPN) combined with the anodes (EPP) can be assigned to different lots based on the loading of the anode roll (ERP) and the detection of the seam.

[0207] Similarly, when a new negative roll (ERN) is loaded into the unwinder (511N), the negative roll (ERN) must be connected to the negative sheet (ESN) of the remaining previous lot using a seam to continue the roll-to-roll process. For example, after loading the negative roll (ERN) of the new lot into the unwinder (511N), the portion of the negative sheet (ESN) subsequent to the seam of the negative sheet (ESN) that is sensed for the first time can be determined to be unwound from the newly loaded negative roll (ERN). Accordingly, when the seam detection signal (JSSN) is generated after loading the new negative roll (ERN), the controller (540) can be configured to match the electrode ID (EID) to the coordinate values ​​of the negative sheet (ESN) of the subsequent lot. The electrode ID (EID) of each cathode (EPN) can be assigned to a different lot based on the loading of the cathode roll (ERN) and the detection of the seam.

[0208] The second coordinate-related electrode ID data (EIDD2) may include at least one of the electrode ID (EID) of the cathode (EPN) and the coordinate values ​​of the positive electrode sheet (ESP) matched to the electrode ID (EID) of the cathode (EPN) and the coordinate values ​​of the cathode sheet (ESN).

[0209] The first server (1210) may be configured to relay communication between the controller (540) and the second server (1220). The first server (1210) may be configured to convert data collected by the controller (540), such as second coordinate-associated electrode ID data (EIDD2), into the language of the server (1220) and record the converted data in the database of the second server (1220).

[0210] The second server (1220) may be configured to store or process the second coordinate-associated electrode ID data (EIDD2). The second server (1220) may be configured to transmit the second coordinate-associated electrode ID data (EIDD2) to a third server (1230). The third server (1230) may be, for example, a data warehouse, and may store the second coordinate-associated electrode ID data (EIDD2) for a long period of time based on the product's quality assurance period, etc. Accordingly, tracking of the manufacturing process according to the product's life cycle may be provided.

[0211] Furthermore, the third server (1230) may provide a match between the roll maps of the preceding process of the positive electrode roll (ERP) and the roll maps of the preceding process (e.g., electrode process) of the negative electrode roll (ERN), and the electrode ID (EID). Since the third server (1230) is a data warehouse, it may include historical data (i.e., roll maps) for the manufacturing of the positive electrode roll (ERP) and may include historical data (i.e., roll maps) for the manufacturing of the negative electrode roll (ERN).

[0212] Here, the roll map can represent the process events of the positive electrode sheet (ESP) and the negative electrode sheet (ESN) based on the roll map coordinate values ​​indicating the positions on the positive electrode sheet (ESP) and the negative electrode sheet (ESN).

[0213] A roll map may include event data representing events in a roll-to-roll process of electrode sheets (ESP, ESN). Event data typically occurs as the process progresses, and thus is time-series data. Accordingly, data on process events may include values ​​representing the events and time values ​​associated with them. 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. In other words, time-series data may be stored based on the time at which an event occurs (i.e., when inspection and measurement are performed, or when process actions are performed), and events may be associated with time values.

[0214] The roll map represents the history of processes performed on the positive electrode sheet (ESP) and negative electrode sheet (ESN) and may include coordinate-related data. Accordingly, the roll map enables feedback, feedforward, and tracking of the battery manufacturing process.

[0215] Mono cells (MC) include electrode IDs (EIDs) formed on negative tabs (TN), and the server (1220) can include lot numbers and coordinates of positive and negative electrodes included in the mono cells that match the electrode IDs (EIDs). In other words, the positive electrodes (EPP) and negative electrodes (EPN) included in the battery cell can be associated with a roll map by the electrode IDs (EIDs). Accordingly, when an event such as a quality issue occurs in mono cells (MC) (or a battery cell including mono cells (MC)) that have already been shipped, the history of collective data of the manufacturing of the corresponding mono cells (MC) can be retrieved based on the electrode IDs.

[0216] According to some embodiments, the operations of the servers (1210, 1220, 1230) 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 Read Only Memory (ROM), Random Access Memory (RAM), magnetic disk storage media, optical storage media, flash memory, electrical, optical, acoustical or other forms of propagated signals (e.g., carrier waves, infrared signals, digital signals, etc.), and any other signals.

[0217] The servers (1210, 1220, 1230) 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 servers (1210, 1220, 1230) may be instantiated in memory.

[0218] However, this is for convenience of explanation, and the operations of the above-described servers (1210, 1220, 1230) may also be caused by other devices executing computing devices, distributed computing devices, processors, firmware, software, routines and instructions, etc.

[0219]

[0220] Figure 7 illustrates roll maps generated from multiple pre-lamination processes, and Figure 8 illustrates data matched to roll map coordinate values. Figure 10 illustrates data matching of a battery manufacturing system according to exemplary embodiments.

[0221] Referring to Fig. 7, the roll map in the coating process, the roll map in the roll pressing process, and the roll map in the notching process are arranged in parallel along the longitudinal direction of the raw material electrode sheet. Fig. 7 shows a case where electrode slurry is coated along both sides of the electrode sheet and roll pressed, and the roll maps of the coating process and the roll pressing process are created for the upper and lower surfaces of the electrode sheet, respectively. In some cases, a slitting process may be performed between the roll pressing process and the notching process. Although not shown, a roll map similar to Fig. 7 for both sides of the electrode sheet may also be created for the slitting process. However, in the notching process, only notching is performed without performing any special treatment on the upper and lower surfaces of the electrode. Since the properties of the upper and lower surfaces do not particularly change due to the notching in the notching process, it is sufficient to create only a roll map of a single plane regardless of the upper and lower surfaces of the electrode.

[0222] Roll maps record electrode manufacturing history data of successive electrode manufacturing processes, such as electrode coating processes, roll pressing processes, and notching processes, so that the cause of defects can be identified in the relationship between subsequent processes. The server (1200) stores roll maps of multiple preceding processes of the first electrode sheet and the second electrode sheet, which are respectively related to the first and second electrodes laminated in the lamination process. For example, the roll maps of FIG. 7 may be roll maps of multiple preceding processes (coating, roll pressing, notching) for the first electrode sheet.

[0223] The roll map includes roll map coordinate values ​​indicating locations on the first electrode sheet. The server (1200) can align the roll maps of each process so that they correspond to the same portion of the actual electrode sheet, as shown in FIG. 7.

[0224] In Fig. 7, the roll map coordinate value ① of the notching process of the first electrode sheet is shown as '90.04', the roll map coordinate value ② is '189.78', and the roll map coordinate value ③ is '220.37'. From Fig. 7, the roll map portions of the roll pressing process and the coating process corresponding to the roll map coordinate values ​​'90.04', '189.78', and '220.37' of the notching process, respectively, are indicated with dotted lines on the upper portion of the notching process roll map. Therefore, the roll map coordinate values ​​of the corresponding roll map portions of the roll pressing process and the coating process can be searched for from the roll maps of the roll pressing process and the coating process or found by a separate calculation. However, the numerical values ​​of the roll map coordinate values ​​of the roll pressing process and the coating process may be different from the numerical values ​​of the roll map coordinate values ​​of the notching process. Fig. 7 only shows that the roll map coordinate values ​​of the notching process can correspond to the roll map coordinate values ​​of other processes, and the actual roll map coordinate values ​​in each process of the corresponding portion may be different.

[0225] Different sequential electrode IDs (EIDs) can be assigned to the first electrode sheet portions corresponding to the roll map coordinate values ​​of ①, ②, and ③ above.

[0226] Fig. 8 illustrates an example of the first coordinate-associated electrode ID data (EIDD1) in the notching process. In Fig. 8, the electrode ID (EID) 'SBKF010098' of the notching process and the roll map coordinate value (first coordinate value) '89.79' of the corresponding first electrode sheet of the notching process are displayed in correspondence. In addition, the time at which the electrode ID and roll map coordinate values ​​were acquired and the lot ID of the corresponding first electrode sheet are also displayed. This is only an example, and the first coordinate-associated electrode ID data (EIDD1) may also include inspection and / or measurement data or other additional process event data at the corresponding time.

[0227] In this way, the first coordinate-related electrode ID data (EIDD1) can be acquired in the notching process, and the roll maps of other processes corresponding to the electrode ID and the first coordinate value in the notching process can be compared. In this way, the first coordinate-related electrode ID data can be matched with the roll map coordinate values ​​and process event data corresponding to each other process.

[0228] Additionally, in the lamination process, second coordinate-related electrode ID data (EIDD2) can be acquired. The second coordinate-related electrode ID data (EIDD2) includes an electrode ID (EID), coordinate values ​​of a first electrode (e.g., a cathode) matched to the electrode ID, and coordinate values ​​of a second electrode (e.g., an anode) matched to the electrode ID.

[0229] Accordingly, the first coordinate-associated electrode ID data (EIDD1) having the same electrode ID as the electrode ID included in the second coordinate-associated electrode ID data (EIDD2) can be associated. Accordingly, at least one of the electrode ID of the second coordinate-associated electrode ID data (EIDD2), the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID can be matched to the electrode ID and the first coordinate value included in the first coordinate-associated electrode ID data (EIDD1). In addition, roll map coordinate values ​​in a plurality of preceding processes (coating, roll pressing, slitting, etc.) corresponding to the first coordinate value can be associated.

[0230] In conclusion, the server (1200) can match at least one of the electrode ID of the second coordinate-related electrode ID data (EIDD2) in the lamination process, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID with the corresponding roll map coordinate value of a plurality of previous preceding processes (coating, roll pressing, slitting, and notching).

[0231] In Fig. 10, a data set (second coordinate-related electrode ID data (EIDD2)) acquired in a lamination process is indicated as PDl, EID, Ca, and Cb. PDl is process event data of the lamination process, EID is the electrode ID at the time when the process event data is acquired, and Ca and Cb are the coordinate values ​​of the first electrode and the second electrode matched to the electrode ID.

[0232] When the electrode ID in the notching process corresponding to the above EID is searched, the electrode ID data associated with the second coordinate can be matched with the electrode ID data associated with the first coordinate. The data set acquired in the notching process is indicated by PDn, EID, and Cn. PDn is the process event data of the notching process, EID is the electrode ID at the time when the process event data is acquired, which is the same electrode ID as the electrode ID of the lamination process, and Cn is the coordinate value of the first electrode sheet matched to the electrode ID, i.e., the first coordinate value. Although not shown in Fig. 10, the coordinate value (first coordinate value) in the notching process of the second electrode sheet corresponding to the coordinate value Cb of the second electrode in the lamination process can also be obtained.

[0233] In addition, as described above, the roll map coordinate values ​​(C1, C2,,,,Cn) of the first electrode sheet in the plurality of preceding processes corresponding to the EID and the first coordinate value (Cn) of the notching process can be obtained. In addition, the process event data (PD1, PD2,,,,PDn) associated with the roll map coordinate values ​​can be obtained from the roll maps of the plurality of preceding processes. Although not shown in Fig. 10, the roll map coordinate values ​​in the plurality of preceding processes corresponding to the coordinate value Cb of the second electrode in the lamination process and the process event data associated therewith can also be obtained.

[0234]

[0235] Fig. 9 illustrates a post-process event data matching unit according to exemplary embodiments. Fig. 10 illustrates data matching of a battery manufacturing system according to exemplary embodiments.

[0236] The battery manufacturing system (10) of the present invention comprises at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID.

[0237] It further includes a subsequent process event data matching unit (610) that matches the ID of at least one upper battery assembly selected from the following and / or process event data acquired in a plurality of subsequent processes after the joining of the first electrode and the second electrode.

[0238] 1) Assembly ID (AID) of an electrode assembly including at least one combination of the first electrode and the second electrode

[0239] 2) Semi-finished product ID (HID) of a battery semi-finished product including the above electrode assembly

[0240] 3) Cell ID (CID) of the battery cell including the electrode assembly or battery semi-finished product

[0241] 4) Stack ID (SID) of a battery cell stack including multiple battery cells

[0242] 5) Module ID (MID) of the battery module including the above battery cell stack

[0243] 6) Pack ID (PID) of a battery pack including multiple battery modules

[0244] The battery manufacturing system (10) of the present invention may include, for example, a subsequent process event data matching unit (610) as shown in FIG. 9. The subsequent process event data matching unit (610) may be a process controller that manages each subsequent process. Specifically, the process controller may be a PLC. A PLC may be defined as a control device used for maintenance, management, automatic control, and monitoring of a process system for battery manufacturing. This process controller may include a main control unit (611) as shown in FIG. 9. The main control unit (611) may control the overall operation of the process controller and the overall process flow. In addition, the subsequent process event data matching unit (610) may include an electrode ID collection unit (612) and a process event data collection unit (613). The electrode ID collection unit (612) may be, for example, a barcode reader (BCR). In addition, the process event data collection unit (613) may be a predetermined inspection and / or measuring device installed for each process. For example, during the activation process, certain inspection and / or measurement data can be acquired from a measuring instrument that measures the charge / discharge capacity, temperature, etc. of the target cell for activation. Alternatively, the PLC of each process itself can collect process event data such as equipment data and time series data.

[0245] In the subsequent process event data matching unit (610), the above process event data can be matched with the electrode ID. The matched electrode ID and each subsequent process data can be sent to the server (1200). The server (1200) can match the electrode ID and each subsequent process event data with the roll map coordinate values ​​of the preceding processes stored in the server (1200), and / or the process event data matching the roll map coordinate values, the electrode ID data associated with the first coordinate described above, and the electrode ID data associated with the second coordinate.

[0246] Meanwhile, as the subsequent process progresses, the electrodes are bundled into multiple pieces to form an electrode assembly, or the electrode assemblies are bundled again to form larger units (e.g., battery semi-finished products, battery cells, battery cell stacks, battery modules, battery packs). An identification mark (ID) can be assigned to these upper battery assemblies, which include electrodes to which an electrode ID (EID) has been assigned. One upper battery assembly may include multiple lower battery assemblies. In FIG. 9, the subsequent process event data matching unit (610) includes an upper battery assembly ID generating unit (614). The upper battery assembly ID generating unit (614) can assign a physical ID or a virtual ID to the upper battery assembly. For example, the upper battery assembly ID generating unit (614) may be an ID marking device. Alternatively, another virtual ID generating device that can identify the upper battery assembly by generating predetermined count information, etc. using a tap sensor or a trigger board may become the upper battery assembly ID generating unit (614).

[0247] Referring to FIG. 10, the IDs of various upper battery assemblies in multiple subsequent processes are illustrated.

[0248] For example, in a lamination process, at least one assembly (e.g., mono-cell or bi-cell) in which a first electrode and a second electrode are combined can be stacked or folded to form an electrode assembly. That is, an electrode assembly in the form of a stacked cell is manufactured by a lamination and stacking (L&S) process, and an electrode assembly in the form of a folding cell is manufactured by a lamination and folding (L&F) process. In a process such as ZZS or AZS, electrodes having electrode tabs formed thereon are sequentially stacked between zigzag-shaped separators, so that electrode bonding and lamination can be performed simultaneously to manufacture an electrode assembly.

[0249] If the ID of such an electrode assembly is AID, the AID can correspond to multiple electrode IDs (EID1, EID2,,,,) included in the electrode assembly. Process event data (PDa) acquired in the assembly process of the L&S or L&F or ZZS or AZS process can be collected by the process event data collection unit (613) and correspond to the AID and multiple electrode IDs (EID1, EID2,,,,). Fig. 10 illustrates a data set (PDa, AID, EID1, EID2,,,,) in such an assembly process.

[0250] The electrode assembly is housed in a housing, and an electrolyte is injected to undergo an activation process. Before the activation process, the battery cell cannot be considered a finished product. Products containing the electrode assembly before completion can be considered battery semi-finished products. These battery semi-finished products can also be assigned a semi-finished product ID (HID), and each HID can correspond to multiple AIDs (AID1, AID2, etc.) and multiple electrode IDs (EID1, EDI2, etc.). The process event data (PDb) of the semi-finished product manufacturing process can correspond to the HID, AIDs, and EIDs.

[0251] After the activation process, a completed battery cell may be assigned a cell ID (CID). A plurality of battery cells may be stacked to form a stack. The stack may be housed in at least one module housing to form a module. A plurality of modules may be housed in a pack housing to form a battery pack. The battery cell, cell stack, module, and pack are each assigned a cell ID (CID), stack ID (SID), module ID (MID), and pack ID (PID). In this way, the ID of one upper battery assembly is associated with the IDs of multiple lower battery assemblies, and ultimately may be associated with the electrode ID (EID) of the bonding process and the notching process. In the association process, process event data of each process is associated with the ID of the corresponding process.

[0252] Therefore, according to the present invention, the second coordinate-related electrode ID data of the bonding process, particularly, can be matched with the ID and process event data of the upper battery assembly of a plurality of subsequent processes based on the electrode ID. In addition, the second coordinate-related electrode ID data of the bonding process is associated with the first coordinate-related electrode ID data of the preceding notching process, which in turn can be associated with the roll map coordinate values ​​of the electrode manufacturing processes of coating, roll pressing, and slitting processes and process event data of the corresponding processes.

[0253] In conclusion, according to the present invention, it is possible to trace all product-related histories derived from electrodes throughout the entire process from the electrode manufacturing process to the finished battery product manufacturing process.

[0254] (Example 2)

[0255] FIG. 11 is a flowchart illustrating a battery manufacturing method according to exemplary embodiments.

[0256] Referring to FIG. 2 and FIG. 11, an electrode ID can be assigned to the first electrode sheet (ES4) in the notching process of step P110. After the notching process by the notching machine (415), an ID marking machine (433) marks the electrode ID on the electrode tab portion formed on the first electrode sheet (ES4) at a predetermined pitch interval, thereby assigning an electrode ID (EID).

[0257] As the electrode ID (EID) is detected by the first electrode ID reader (435) in the notching process, the electrode ID and the first coordinate value, which is the coordinate value of the first electrode sheet corresponding to the electrode ID, can be acquired. The electrode ID and the first coordinate value can be included in the first coordinate-associated electrode ID data (EIDD1). The acquired first coordinate-associated electrode ID data (EIDD1) can be transmitted from the notching controller (440) to the server (1200) together with coordinate-associated inspection and / or measurement data (CMD4) or other additional process event data.

[0258] Next, in the bonding process (e.g., lamination process) of step P120, a plurality of first electrodes having the electrode ID can be formed from the first electrode sheet, and a plurality of second electrodes can be formed from the second electrode sheet. That is, the first electrode sheet (ESN) and the second electrode sheet (ESP) can be cut to form first electrodes (EPN) and second electrodes (EPP).

[0259] Referring to FIGS. 3, 4, and 11, a plurality of cathodes (EPN) (first electrodes) can be cut at a substantially constant pitch by a cathode cutter (513N). A plurality of anodes (EPP) (second electrodes) can be cut at a substantially constant pitch by a cathode cutter (513P). Each of the plurality of anodes (EPP) can include a cathode tab (TP), and each of the plurality of cathodes (EPN) can include a cathode tab (TN).

[0260] Next, in step P130, a plurality of positive electrodes (EPP) and a plurality of negative electrodes (EPN) can be combined. The plurality of positive electrodes (EPP) and the plurality of negative electrodes (EPN) can be combined with separator sheets (SS1, SS2) to prevent short circuits. The plurality of positive electrodes (EPP) and the plurality of negative electrodes (EPN) and the separator sheets (SS1, SS2) can be pressed by a nip roll. By cutting the separator sheets (SS1, SS2) with a separator cutter (517), a mono cell (MC) can be provided. Alternatively, in the ZZS process or the AZS process, the positive electrodes (EPP) and the negative electrodes (EPN) can be sequentially laminated on a zigzag-shaped separator to manufacture an electrode assembly.

[0261] Next, in step P140, second coordinate-related electrode ID data (EIDD2) can be collected. The second coordinate-related electrode ID data (EIDD2) can be collected by matching at least one of the coordinate values ​​of the plurality of anodes (EPP) and the coordinate values ​​of the plurality of cathodes (EPN) to the electrode ID (EID). The second coordinate-related electrode ID data (EIDD2) can be collected by the controller (540) and stored in the server (1200).

[0262] Next, in step P150, the roll maps of the preceding process can be associated with the electrode IDs of the cathodes. The roll maps can be generated in the electrode process (i.e., coating, roll pressing, optional slitting) and the notching process for manufacturing the anode roll (ERP) and the cathode roll (ERN). Therefore, in the plurality of preceding processes prior to the electrode ID assignment step, when the anode sheet (first electrode sheet) and the cathode sheet (second electrode sheet) move while undergoing a predetermined process, coordinate values ​​indicating the positions on the first electrode sheet and the second electrode sheet can be acquired for each process. The coordinate values ​​of the first electrode sheet and the coordinate values ​​of the second electrode sheet in each of the processes can be roll map coordinate values ​​collected based on the input and / or exhausted amounts of the first electrode sheet or the second electrode sheet in the plurality of processes.

[0263] In each of the above processes, at least one of the roll map coordinate values ​​of the first electrode sheet and the roll map coordinate values ​​of the second electrode sheet can be matched to at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID. In this case, the second coordinate-associated electrode ID data can be matched to the first coordinate-associated electrode ID data. Accordingly, the first coordinate value of the first coordinate-associated electrode ID data can be matched to the electrode ID, the coordinate value of the first electrode, and the coordinate value of the second electrode of the second coordinate-associated electrode ID data.

[0264] Next, at step P160, for example, by the subsequent process event data matching unit (610) of FIG. 9, at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID can be matched with the ID of the upper battery assembly and / or the process event data acquired in the subsequent process.

[0265] In this case, the ID of the upper battery assembly may be at least one selected from the following:

[0266] 1) Assembly ID (AID) of an electrode assembly including at least one combination of the first electrode and the second electrode

[0267] 2) Semi-finished product ID (HID) of a battery semi-finished product including the above electrode assembly

[0268] 3) Cell ID (CID) of the battery cell including the electrode assembly or battery semi-finished product

[0269] 4) Stack ID (SID) of a battery cell stack including multiple battery cells

[0270] 5) Module ID (MID) of the battery module including the above battery cell stack

[0271] 6) Pack ID (PID) of a battery pack including multiple battery modules

[0272]

[0273] (Example 3)

[0274] According to the present invention, workpieces, semi-finished products, and products can be provided with quality traceability secured from electrode manufacturing to finished battery product manufacturing.

[0275] According to the present invention, an electrode assembly (e.g., a stack cell or a folding cell, or an electrode assembly laminated in a zigzag shape by a ZZS or AZS process) comprising at least one assembly (e.g., a mono cell or a bi cell) of a first electrode (e.g., a cathode) having an electrode ID (EID) and a second electrode (e.g., an anode) having coordinate values ​​matching the electrode ID can be provided.

[0276] According to the present invention, at least one upper battery assembly including the electrode assembly may be provided, wherein the upper battery assembly is selected from the following.

[0277] 1) Battery semi-finished product including the above electrode assembly

[0278] 2) A battery semi-finished product including the above electrode assembly and having a semi-finished product ID (HID) corresponding to the above assembly ID (AID).

[0279] 3) Battery cell including the above electrode assembly or battery semi-finished product

[0280] 4) A battery cell including the electrode assembly or battery semi-finished product, and having a cell ID (CID) corresponding to the electrode assembly ID (EID) or semi-finished product ID (HID).

[0281] 5) Battery cell stack including a plurality of the above battery cells

[0282] 6) A battery cell stack including a plurality of the above battery cells and having a stack ID (SID) corresponding to the cell ID.

[0283] 7) Battery module including the above battery cell stack

[0284] 8) A battery module including the battery cell stack and having a module ID (MID) corresponding to the stack ID (SID).

[0285] 9) Battery pack including a plurality of the above battery modules

[0286] 10) A battery pack including a plurality of the above battery modules and having a pack ID (PID) corresponding to the module ID (MID).

[0287]

[0288] 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.

[0289] (Explanation of symbols)

[0290] 10: Battery manufacturing system

[0291] 100: Coating device

[0292] 200: Roll pressing device

[0293] 300: Slitting device

[0294] 400: Notching device

[0295] 500: Lamination device

[0296] 600: Post-processing device

[0297] 1100: EIF

[0298] 1200: Server, 1210: First Server, 1220: Second Server, 1230: Third Server

[0299] 1300: Display device

[0300] 411: Unwinder

[0301] 413: Rewinder

[0302] 421, 423: Rotary encoder

[0303] 415: Notching Machine

[0304] 433: ID Marking Machine

[0305] 431: Inspection and / or measuring instruments

[0306] 435: First Electrode ID Reader

[0307] 441: Rollmap PLC

[0308] 443: Process PLC

[0309] 440: Notching Controller

[0310] 511P, 511N, 111S1, 111S2: Unwinder

[0311] 513P: Positive Cutter, 513N: Negative Cutter

[0312] 515: Guide Roll

[0313] 517: Membrane Cutter

[0314] 521P, 521N: Rotary Encoder

[0315] 523P, 523N: Seam Sensor

[0316] 525: Electrode Gap Sensor

[0317] 527: Second Electrode ID Reader

[0318] 540: Controller

Claims

1. Form a plurality of first electrodes having electrode IDs from a first electrode sheet to which electrode IDs are assigned at predetermined pitch intervals, Forming a plurality of second electrodes from the second electrode sheet, and also A coupling device configured to couple the plurality of first electrodes and the plurality of second electrodes; A battery manufacturing system comprising a controller configured to collect coordinate-related electrode ID data including the electrode ID and coordinate values ​​of at least one of the first electrode and the second electrode matched to the electrode ID, based on the first input amount of the first electrode sheet, the second input amount of the second electrode sheet, and the electrode ID detection signal.

2. In paragraph 1, A battery manufacturing system further comprising a server configured to store electrode ID data associated with the above coordinates.

3. In paragraph 1, A battery manufacturing system further comprising a notching device configured to provide electrode IDs at predetermined pitch intervals to the first electrode sheet.

4. In paragraph 3, The above notching device is, A notching machine for forming electrode tabs at predetermined pitch intervals on the first electrode sheet; An ID marking device for marking electrode IDs on the above electrode tabs; and A battery manufacturing system comprising a notching controller configured to collect coordinate-related electrode ID data including the electrode ID and a first coordinate value that is a position of a first electrode sheet in a notching process matched to the electrode ID.

5. In paragraph 4, The above first coordinate value is, A battery manufacturing system obtained based on a signal of the amount of release and / or amount of winding of the first electrode sheet when the electrode ID is detected in the notching process.

6. In paragraph 1, The above coupling device, A first electrode cutter configured to cut a first electrode sheet drawn from a first electrode roll to provide a plurality of first electrodes; A second electrode cutter configured to cut a second electrode sheet drawn from a second electrode roll to provide a plurality of second electrodes; and A battery manufacturing system comprising a second electrode ID reader configured to detect an electrode ID of an electrode tab of each of the plurality of first electrodes to generate an electrode ID detection signal.

7. In paragraph 6, The first input amount of the first electrode sheet is calculated based on the pitch of the plurality of first electrodes and the cut count of the first electrode cutter, A battery manufacturing system, characterized in that the second input amount of the second electrode sheet is calculated based on the pitch of the plurality of second electrodes and the cut count of the second electrode cutter.

8. In paragraph 6, The above coupling device, a first rotary encoder configured to generate a first input signal representing a first input amount of the first electrode sheet; and A battery manufacturing system further comprising a second rotary encoder configured to generate a second input amount signal representing a second input amount of the second electrode sheet.

9. In paragraph 2, The server stores a roll map of each process including roll map coordinate values ​​indicating positions on the first electrode sheet and the second electrode sheet in a plurality of preceding processes prior to assigning the electrode ID, A battery manufacturing system characterized in that the server corresponds at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID to the roll map coordinate value.

10. In paragraph 2, At least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID, A battery manufacturing system further comprising a subsequent process event data matching unit configured to match the ID of at least one upper battery assembly selected from the following and / or process event data acquired in a plurality of subsequent processes after the joining of the first electrode and the second electrode. 1) Assembly ID of an electrode assembly including at least one combination of the first electrode and the second electrode 2) Semi-finished product ID of a battery semi-finished product including the above electrode assembly 3) Cell ID of the battery cell including the electrode assembly or battery semi-finished product 4) Laminate ID of a battery cell laminate including a plurality of the above battery cells 5) Module ID of the battery module including the above battery cell stack 6) Pack ID of a battery pack including multiple battery modules 11. A step of assigning electrode IDs at predetermined pitch intervals to the first electrode sheet; A step of forming a plurality of first electrodes having the electrode ID from the first electrode sheet and forming a plurality of second electrodes from the second electrode sheet; A step of combining the plurality of first electrodes and the plurality of second electrodes; and A battery manufacturing method comprising a step of collecting coordinate-related electrode ID data including the electrode ID and coordinate values ​​of at least one of the first electrode and the second electrode matched to the electrode ID.

12. In paragraph 11, A battery manufacturing method in which the above electrode ID is applied to an electrode tab formed at a predetermined pitch interval with respect to the first electrode sheet by notching processing.

13. In paragraph 12, The position of the first electrode sheet corresponding to the above electrode ID in the notching process is acquired as the first coordinate value, A battery manufacturing method characterized in that at least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID corresponds to the first coordinate value.

14. In paragraph 11, The above coordinate-related electrode ID data is collected based on the first input amount of the first electrode sheet, the second input amount of the second electrode sheet, and the electrode ID detection signal, A battery manufacturing method, characterized in that the electrode ID detection signal is generated based on detection of the electrode ID.

15. In paragraph 14, The first input amount of the first electrode sheet is calculated based on the pitch of the plurality of first electrodes and the cut count of the first electrode cutter, A battery manufacturing method, characterized in that the second input amount of the second electrode sheet is calculated based on the pitch of the plurality of second electrodes and the cut count of the second electrode cutter.

16. In paragraph 14, The first input amount of the first electrode sheet is determined by a first input amount signal generated by a first rotary encoder configured to detect a rotation amount of a first electrode unwinder configured to unwind the first electrode sheet, A battery manufacturing method, characterized in that the second input amount of the second electrode sheet is determined by a second input amount signal generated by a second rotary encoder configured to detect a rotation amount of a second electrode unwinder configured to unwind the second electrode sheet.

17. In paragraph 11, In a plurality of preceding processes prior to the electrode ID assignment step, when the first electrode sheet and the second electrode sheet move while undergoing a predetermined process, coordinate values ​​indicating the positions on the first electrode sheet and the second electrode sheet are acquired for each process, A battery manufacturing method further comprising a step of corresponding at least one of the coordinate values ​​of the first electrode sheet and the coordinate values ​​of the second electrode sheet in each of the above processes to at least one of the electrode ID, the coordinate values ​​of the first electrode matched to the electrode ID, and the coordinate values ​​of the second electrode matched to the electrode ID.

18. In paragraph 11, At least one of the electrode ID, the coordinate value of the first electrode matched to the electrode ID, and the coordinate value of the second electrode matched to the electrode ID, A battery manufacturing method further comprising a step of matching the ID of at least one upper battery assembly selected from the following and / or process event data acquired in a plurality of subsequent processes after the joining of the first electrode and the second electrode. 1) Assembly ID of an electrode assembly including at least one combination of the first electrode and the second electrode 2) Semi-finished product ID of a battery semi-finished product including the above electrode assembly 3) Cell ID of the battery cell including the electrode assembly or battery semi-finished product 4) Laminate ID of a battery cell laminate including a plurality of the above battery cells 5) Module ID of the battery module including the above battery cell stack 6) Pack ID of a battery pack including multiple battery modules 19. At least one combination of a first electrode having an electrode ID and a second electrode having a coordinate value matching the electrode ID, An electrode assembly characterized by having an assembly ID corresponding to the above electrode ID.

20. At least one upper battery assembly comprising the electrode assembly of clause 19 and selected from the following. 1) Battery semi-finished product including the above electrode assembly 2) A battery semi-finished product including the above electrode assembly and having a semi-finished product ID corresponding to the above assembly ID. 3) Battery cell including the above electrode assembly or battery semi-finished product 4) A battery cell including the electrode assembly or battery semi-finished product, and having a cell ID corresponding to the electrode assembly ID or semi-finished product ID. 5) Battery cell stack including a plurality of the above battery cells 6) A battery cell stack including a plurality of the above battery cells and having a stack ID corresponding to the above cell ID. 7) Battery module including the above battery cell stack 8) A battery module including the battery cell stack and having a module ID corresponding to the stack ID. 9) Battery pack including a plurality of the above battery modules 10) A battery pack including a plurality of the above battery modules and having a pack ID corresponding to the module ID.

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