Secondary battery manufacturing system

Abstract

The present invention provides a secondary battery manufacturing system with improved traceability. A cell tracking method according to one embodiment of the present disclosure may include the steps of: obtaining a cell ID corresponding to a semi-finished cell; obtaining a holder ID corresponding to a holder in which the semi-finished cell is placed; and matching the cell ID and the holder ID.

Description

Technical Field

[0001] This application claims the benefit of priority based on Korean Patent Application No. 2024-0005395 filed on January 12, 2024 and Korean Patent Application No. 2024-0195586 filed on December 24, 2024, and all the contents disclosed in the documents of the Korean patent applications are included as part of this specification.

[0002] The embodiments disclosed in this document relate to a secondary battery manufacturing system.

Background Art

[0003] Unlike primary batteries, secondary batteries can be charged and discharged multiple times. Secondary batteries are widely used as an energy source for various wireless devices such as handsets, notebook computers, and wireless vacuum cleaners. In recent years, due to improvements in energy density and economies of scale, the manufacturing cost per unit capacity of secondary batteries has decreased epochally, and as the cruising range of battery electric vehicles (BEVs) increases to a level equivalent to that of fuel vehicles, the main usage of secondary batteries is shifting from mobile devices to mobility.

[0004] Secondary batteries are manufactured through an electrode process, an assembly process, and an activation process. To improve the yield and reliability of the secondary battery manufacturing process, it is important to ensure traceability in the manufacturing process. Accordingly, various studies have been conducted to ensure traceability in the secondary battery manufacturing process.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The problem to be solved by the technical idea of the present disclosure is to provide a secondary battery manufacturing system with improved traceability.

Means for Solving the Problems

[0006] A cell tracking method according to one embodiment of the present disclosure may include the steps of: obtaining a cell ID corresponding to a semi-finished cell; obtaining a holder ID corresponding to a holder in which the semi-finished cell is placed; and matching the cell ID and the holder ID.

[0007] In a cell tracking method according to one embodiment of the present disclosure, the cell ID may be a virtual ID generated using data related to the semi-finished cell.

[0008] In a cell tracking method according to one embodiment of the present disclosure, the semi-finished cell is a jelly roll having a structure in which a positive electrode, a negative electrode, and a separator membrane are interposed and wound, and the step of obtaining the cell ID may include the step of generating a jelly roll ID corresponding to the jelly roll based on a first sub-step included in the secondary battery manufacturing process.

[0009] In a cell tracking method according to one embodiment of the present disclosure, the first sub-step is a step of loading the jelly rolls placed on a tray into a first carrier, and the step of generating the jelly roll ID may include a step of identifying a tray ID by sensing a code object on the tray, and a step of generating the jelly roll ID based on the tray ID.

[0010] In a cell tracking method according to one embodiment of the present disclosure, the step of generating the jelly roll ID may include the steps of loading the electrode lot ID and electrode count of the jelly roll based on the identification of the tray ID, determining the tray coordinates of the tray of the jelly roll, and generating the jelly roll ID further based on the electrode lot ID, the electrode count, and the tray coordinates.

[0011] A cell tracking method according to one embodiment of the present disclosure may further include the steps of obtaining a roll map of the semi-finished cell based on an electrode manufacturing process included in the secondary battery manufacturing process, and matching the roll map with the cell ID.

[0012] In a cell tracking method according to one embodiment of the present disclosure, the holder is a carrier in which the semi-finished cell is placed during the secondary battery manufacturing process, and the step of obtaining the holder ID may include the step of obtaining a carrier ID corresponding to the carrier based on a second sub-step included in the secondary battery manufacturing process.

[0013] In a cell tracking method according to one embodiment of the present disclosure, the second sub-step is a step of loading the semi-finished cell onto a second carrier and coupling the semi-finished cell loaded onto the second carrier with a lower insulator, the step of acquiring the carrier ID includes a step of identifying the second carrier ID by sensing the code object of the second carrier, and the step of matching the cell ID and the holder ID may include a step of matching the cell ID and the second carrier ID.

[0014] A cell tracking method according to one embodiment of the present disclosure further includes a step of matching a first carrier ID and a cell ID corresponding to a first carrier on which the semi-finished cell is loaded, based on a first sub-step included in a secondary battery manufacturing process, wherein the step of matching the cell ID and the second carrier ID includes a step of matching the first carrier ID and the second carrier ID, and the first sub-step is performed before the second sub-step is performed.

[0015] A cell tracking method according to one embodiment of the present disclosure further includes a step of identifying a first carrier ID by sensing the code object of the first carrier based on the second substep, and the step of matching the first carrier ID and the second carrier ID may include a step of matching the first carrier ID and the second carrier ID based on a first time in which the first carrier ID was identified based on the second substep and a second time in which the second carrier ID was identified based on the second substep.

[0016] A cell tracking method according to one embodiment of the present disclosure may further include the steps of obtaining process data corresponding to a second sub-process targeting the semi-finished cell, and matching the carrier ID with the process data.

[0017] In a cell tracking method according to one embodiment of the present disclosure, the holder is a cell case or pouch into which the semi-finished cell is inserted during a third sub-step included in the secondary battery manufacturing process, and the step of acquiring the holder ID may include the step of sensing a code object on the cell case or pouch based on the third sub-step.

[0018] In a cell tracking method according to one embodiment of the present disclosure, the step of obtaining the holder ID may include the step of identifying the CAN ID corresponding to the cell case by sensing the code object of the cell case.

[0019] A cell tracking method according to one embodiment of the present disclosure further includes a step of matching a second carrier ID corresponding to a second carrier on which the semi-finished cell is loaded with a cell ID, based on a second sub-step included in a secondary battery manufacturing process, wherein the step of matching the cell ID with the CAN ID includes a step of matching the second carrier ID with the CAN ID, and the second sub-step is performed before the third sub-step is performed.

[0020] A cell tracking method according to one embodiment of the present disclosure further includes a step of identifying a second carrier ID by sensing a code object of the second carrier based on the third substep, and a step of matching the second carrier ID with the CAN ID may include a step of matching the second carrier ID with the CAN ID based on a third time in which the second carrier ID was identified based on the third substep and a fourth time in which the CAN ID was identified based on the third substep.

[0021] A cell tracking method according to one embodiment of the present disclosure may further include the steps of obtaining process data corresponding to the third sub-process targeting the semi-finished cell, and matching the holder ID with the process data.

[0022] In a cell tracking method according to one embodiment of the present disclosure, the third sub-step may be characterized by inserting the semi-finished cell into the cell case or the pouch.

[0023] In a cell tracking method according to one embodiment of the present disclosure, the third sub-step may include at least one of an electrode tab welding step, a cell case forging step, an upper insulator insertion step, a beading step, an electrolyte injection step, a crimping step, and a cleaning step.

[0024] A secondary battery manufacturing system according to one embodiment of the present disclosure includes a plurality of sub-equipment that perform a plurality of sub-processes included in a secondary battery manufacturing process, and at least one controller operationally connected to the plurality of sub-equipment, wherein the at least one controller may be configured to acquire a cell ID corresponding to a semi-finished cell, acquire a holder ID corresponding to a holder in which the semi-finished cell is placed, and match the cell ID and the holder ID.

[0025] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the cell ID may be a virtual ID generated using data related to the semi-finished cell.

[0026] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the semi-finished cell is a jelly roll having a structure in which a positive electrode, a negative electrode, and a separator membrane are interposed and wound together, the plurality of sub-equipment includes a first sub-equipment that performs a first sub-process during the plurality of sub-processes, and the at least one controller may be configured to generate a jelly roll ID corresponding to the jelly roll based on data obtained from the first sub-equipment.

[0027] In a secondary battery manufacturing system according to an embodiment of the present disclosure, the first sub-step is a step of loading the jelly roll disposed on the tray onto a first carrier. The first sub-equipment identifies a tray ID by sensing a code object of the tray, and the at least one controller may be configured to generate the jelly roll ID based on the tray ID.

[0028] In a secondary battery manufacturing system according to an embodiment of the present disclosure, the first sub-equipment loads an electrode lot ID and an electrode count of the jelly roll based on the identification of the tray ID, determines tray coordinates of the tray of the jelly roll, and the at least one controller may be configured to generate the jelly roll ID further based on the electrode lot ID, the electrode count, and the tray coordinates.

[0029] In a secondary battery manufacturing system according to an embodiment of the present disclosure, the holder is a carrier on which the semi-finished cell is disposed during the secondary battery manufacturing process. The plurality of sub-equipments includes a second sub-equipment that performs a second sub-step during the plurality of sub-steps, and the second sub-equipment may be configured to obtain a carrier ID corresponding to the carrier.

[0030] In a secondary battery manufacturing system according to an embodiment of the present disclosure, the second sub-step is a step of loading the semi-finished cell onto a second carrier and coupling the semi-finished cell loaded on the second carrier with a lower insulator. The second sub-equipment identifies a second carrier ID by sensing a code object of the second carrier, and the at least one controller may be configured to match the cell ID and the second carrier ID.

[0031] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the plurality of sub-equipment includes a first sub-equipment that performs a first sub-process during the plurality of sub-processes, the first sub-equipment identifies a first carrier ID by sensing a code object of a first carrier on which the semi-finished cell is loaded, the at least one controller is configured to match the cell ID with the first carrier ID and to match the first carrier ID with a second carrier ID, and the first sub-process is performed before the second sub-process is performed.

[0032] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the second sub-equipment may identify the first carrier ID by sensing the code object of the first carrier, and the at least one controller may be configured to match the first carrier ID and the second carrier ID based on a first time when the first carrier ID was identified by the second sub-equipment and a second time when the second carrier ID was identified by the second sub-equipment.

[0033] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the at least one controller may be configured to acquire process data from the second sub-equipment corresponding to the second sub-process targeting the semi-finished cell, and to match the carrier ID with the process data.

[0034] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the holder is a cell case or pouch into which the semi-finished cell is inserted during a third sub-process included in the secondary battery manufacturing process, the plurality of sub-equipment includes a third sub-equipment that performs the third sub-process, and the third sub-equipment may be configured to identify the holder ID by sensing a code object on the cell case or pouch.

[0035] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the third sub-equipment is configured to identify a CAN ID corresponding to the cell case by sensing the code object of the cell case, the CAN ID may be included in the third cell tracking data.

[0036] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the plurality of sub-equipment includes a second sub-equipment that performs a second sub-process during the plurality of sub-processes, the at least one controller is configured to match the second carrier ID and the cell ID, and to match the second carrier ID and the CAN ID, thereby matching the cell ID and the CAN ID, and the second sub-process is performed before the third sub-process is performed.

[0037] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the third sub-equipment may identify the second carrier ID by sensing the code object of the second carrier, and the at least one controller may be configured to match the second carrier ID and the CAN ID based on a third time when the second carrier ID is identified by the third sub-equipment and a fourth time when the CAN ID is identified by the third sub-equipment.

[0038] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the at least one controller may be configured to acquire process data from the third sub-equipment corresponding to the third sub-process targeting the semi-finished cell, and to match the holder ID with the process data.

[0039] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the third sub-step may be characterized by inserting the semi-finished cell into the cell case or the pouch.

[0040] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the third sub-step may include at least one of an electrode tab welding step, a cell case forging step, an upper insulator insertion step, a beading step, an electrolyte injection step, a crimping step, and a cleaning step.

[0041] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the at least one controller may include a first controller operationally coupled to a first sub-equipment group, which is a group of a first number of sub-equipment units from among the plurality of sub-equipment units, and a second controller operationally coupled to a second sub-equipment group, which is a group of a second number of sub-equipment units from among the plurality of sub-equipment units. [Effects of the Invention]

[0042] According to the cell tracking method of the exemplary embodiments of this disclosure, the manufacturing traceability of secondary batteries can be improved.

[0043] The effects obtained from the exemplary embodiments of this disclosure are not limited to those mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art in the field to which the exemplary embodiments of this disclosure belong from the following description. That is, unintended effects of carrying out the exemplary embodiments of this disclosure can also be derived by those skilled in the art in the field from the exemplary embodiments of this disclosure. [Brief explanation of the drawing]

[0044] [Figure 1] This flowchart shows a method for manufacturing a secondary battery according to an exemplary embodiment. [Figure 2] This is a block diagram showing a secondary battery manufacturing system according to an exemplary embodiment. [Figure 3] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 4] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 5]This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 6] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 7] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 8] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 9] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 10] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 11] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 12] This is a diagram illustrating a secondary battery manufacturing method according to an exemplary embodiment. [Figure 13] This diagram illustrates how a secondary battery manufacturing system, according to an exemplary embodiment, manages data. [Figure 14] This figure shows the role map data illustrated in Figure 13. [Figure 15] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 16] This is a diagram illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 17] This is a diagram illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 18] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 19] This is a diagram illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 20] This is a diagram illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 21]This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 22] This is a diagram illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 23] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 24] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 25] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 26] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 27] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Figure 28] This is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. [Modes for carrying out the invention]

[0045] Preferred embodiments of this disclosure will be described in detail below with reference to the attached drawings. Prior to that, terms and words used in this disclosure should not be interpreted in a manner limited to their ordinary or dictionary meanings, but rather in a manner consistent with the technical idea of ​​this disclosure, based on the principle that inventors can appropriately define the concepts of terms in order to best describe their inventions.

[0046] Therefore, it should be understood that the embodiments and configurations shown in the drawings described herein represent only the most preferred embodiments of the disclosure and do not represent the entirety of the technical idea of ​​the disclosure, and that various equivalents and modifications may exist in the time of filing.

[0047] In addition, if a detailed description of any relevant publicly known configuration or function is deemed to detract from the essence of this disclosure, such detailed description will be omitted.

[0048] Embodiments of this disclosure are provided to those skilled in the art to better illustrate the disclosure; therefore, the shapes and sizes of components in the drawings, etc., may be exaggerated, omitted, or schematic for the sake of clarity. Accordingly, the sizes or proportions of each component do not fully reflect their actual sizes or proportions.

[0049] (First and second embodiments)

[0050] Figure 1 is a flowchart showing a method for manufacturing a secondary battery according to an exemplary embodiment.

[0051] Figure 2 is a block diagram showing a secondary battery manufacturing system 1000 according to an exemplary embodiment.

[0052] Figures 3 to 12 are diagrams illustrating a secondary battery manufacturing method according to an exemplary embodiment.

[0053] Referring to Figures 1 and 2, the secondary battery manufacturing system 1000 may be configured to perform a secondary battery manufacturing process. Here, the secondary battery manufacturing process may include a secondary battery electrode manufacturing process, an assembly process, and an activation process. According to one embodiment, the secondary battery manufacturing system 1000 may be configured to perform a secondary battery assembly process. For example, the secondary battery manufacturing system 1000 may be configured to perform an assembly process for a CAN type battery (e.g., a prismatic or cylindrical battery) or a pouch type battery. The secondary battery manufacturing system 1000 may include a plurality of sub-equipment 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, 110n, controllers 120a, 120b, 120c, 120d, a processor 130, and a server 200. The number of sub-equipment 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, 110n and controllers 120a, 120b, 120c, 120d shown in Figure 2 is illustrative, and the technical ideas of this disclosure are not limited thereto.

[0054] The secondary battery manufacturing process may include multiple sub-processes, and each of the multiple sub-equipment 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, and 110n may be configured to perform one (or more) of the sub-processes.

[0055] Controllers 120a, 120b, 120c, and 120d can be configured to process cell tracking data acquired from multiple sub-facilities 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, and 110n. More specifically, controller 120a can be configured to process cell tracking data CTDa, CTDb, CTDc, and CTDd acquired from controllers 113a, 113b, 113c, and 113d contained in sub-facilities 110a, 110b, 110c, and 110d respectively, and controller 120b can process cell tracking data CTDe, CTDf, and CTDd acquired from controllers 113e, 113f, and 113g contained in sub-facilities 110e, 110f, and 110g respectively. Controller 120c can be configured to process Dg, and controller 120c can be configured to process cell tracking data CTDh, CTD, and CTDj acquired from controllers 113h, 113i, and 113j contained in sub-facilities 110h, 110i, and 110j respectively, and controller 120d can be configured to process cell tracking data CTDm and CTDn acquired from controllers 113m and 113n contained in sub-facilities 110m and 110n respectively.

[0056] The number of controllers 120a, 120b, 120c, and 120d shown in Figure 2, and their assignment to multiple sub-facilities 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, and 110n, are illustrative examples, and the technical ideas of this disclosure are not limited thereto. For example, a secondary battery manufacturing system 1000 may include one controller that processes cell tracking data acquired from multiple sub-facilities 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, and 110n. In this case, the controller can be configured to process cell tracking data acquired from each of the multiple sub-equipment 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, and 110n independently.

[0057] At least one of the controllers 120a, 120b, 120c, and 120d may be configured to acquire a cell ID corresponding to a semi-finished cell based on cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDDi, CTDj, CTDm, CTDn acquired from a plurality of sub-facilities 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, and 110n. According to one embodiment, the cell ID may be a virtual ID generated using data associated with the semi-finished cell. For example, at least one of the controllers 120a, 120b, 120c, and 120d may generate a virtual ID (e.g., jelly roll ID) for a semi-finished cell (e.g., jelly roll) based on at least one of the tray ID, tray coordinates, electrode lot ID, and electrode count of the tray on which the semi-finished cell (e.g., jelly roll) is loaded. According to one embodiment, the cell ID may be a representative ID for tracking a semi-finished cell in at least one sub-process prior to the sub-process that acquires the holder ID, as described later. For example, if a carrier ID corresponding to the holder ID is acquired based on process P40 in Figure 1, the cell ID may be a jelly roll ID generated based on process P30 in Figure 1. As another example, if a CAN ID corresponding to the holder ID is acquired based on process P50 in Figure 1, the cell ID may be a jelly roll ID generated based on process P30 in Figure 1 or a carrier ID acquired based on process P40 in Figure 1.

[0058] Here, the semi-finished cell may include various types of semi-finished cells produced during the manufacturing process by the secondary battery manufacturing system 1000. For example, in the manufacturing process of a CAN-type battery, the semi-finished cell may consist of a jelly roll, which is a structure in which a positive electrode, a negative electrode, and a separator membrane are wound together, or a CAN-type battery cell in which a jelly roll is inserted into a cell case. As another example, in the manufacturing process of a pouch-type battery, the semi-finished cell may consist of a unit cell composed of at least one polarity electrode (e.g., positive electrode and / or negative electrode) and a separator membrane, a stacked electrode assembly formed by stacking multiple unit cells, a folded electrode assembly formed by folding multiple unit cells, or a pouch-type battery cell in which an electrode assembly is inserted into a pouch. In this case, the unit cell can consist of a mono cell, where a positive electrode and a negative electrode are located on the outermost sides, a bi-cell, where electrodes of the same polarity are located on the outermost sides, or a half cell, where a positive electrode or a negative electrode is located between the outermost separation membranes.

[0059] At least one of the controllers 120a, 120b, 120c, and 120d may be configured to acquire a holder ID corresponding to the holder in which a semi-finished cell is placed, based on cell tracking data CTDa, CTDb, CTDc, CTDd, CTDe, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, and CTDn acquired from a plurality of sub-facilities 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, and 110n.

[0060] Here, the holder may include various types of holders into which semi-finished cells are placed during the manufacturing process by the secondary battery manufacturing system 1000. For example, in the manufacturing process of a CAN-type battery, the holder may consist of a carrier 115a or 115b into which the jelly rolls are placed, or a cell case into which the jelly rolls are inserted. The carrier 115a or 115b may be configured to fold the jelly rolls in specific sub-processes P30, P40, and P50 that deal with the jelly rolls. The cell case may be a component of a cylindrical battery cell into which the jelly rolls are inserted in a specific sub-process P50. As another example, in the manufacturing process of a pouch-type battery, the holder may consist of a magazine into which unit cells are stacked, or a pouch into which unit cells are inserted. The magazine may be configured to stack and fold multiple unit cells before a stacking or folding process, which involves stacking or folding multiple unit cells to form an electrode assembly, after the notching process in which electrode tabs are formed on the electrode sheet of the unit cell and the lamination process in which the unit cell is bonded to the separator membrane during the assembly process of the pouch-type battery. The pouch is a component of the pouch-type battery cell and may be configured to insert stacked cells or folded cells during the packaging process.

[0061] At least one of the controllers 120a, 120b, 120c, and 120d may obtain the cell ID and / or holder ID using various data contained in the cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDDi, CTDj, CTDm, and CTDn.

[0062] According to one embodiment, the cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, CTDn may include data for obtaining the cell ID and / or holder ID. The cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, CTDn may include identified identification data obtained by sensing code objects associated with semi-finished cells and / or holders. For example, the identification data may include at least one of a tray ID identified through a code object on a tray on which jelly rolls are placed, a carrier ID identified through a code object on a carrier into which jelly rolls are loaded, and a CAN ID identified through a code object on a cell case into which jelly rolls are inserted. Here, the code object is a code image containing information about the ID of an object sensed and identified by a code reader (e.g., matrix readers 111a, 111b, 111c, 111d, 111e, 111f, 111g, 111h, 111i, 111j, 111m, 111n), and can be embodied in at least one of a data matrix, a QR code, and a barcode. The technical idea of ​​this disclosure will be described below focusing on embodiments in which a data matrix is ​​used as the code object. However, this is for illustrative purposes only and will not limit the technical idea of ​​this disclosure. The identification data may further include an electrode lot ID and electrode count that are loaded by a plurality of sub-equipment 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110k, 110l, 110m, 110n triggered by ID identification.

[0063] According to one embodiment, the cell tracking data CTDa, CTDb, CTDc, CTDd, CTDe, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, and CTDn may include time data relating to the time when the identification data was identified. Such time data can be used for matching between multiple IDs.

[0064] At least one of the controllers 120a, 120b, 120c, and 120d may be configured to match the acquired cell ID with the holder ID.

[0065] According to one embodiment, at least one of the controllers 120a, 120b, 120c, and 120d may be configured to match a jelly roll ID corresponding to a jelly roll and a carrier ID corresponding to a carrier on which the jelly roll is placed during the secondary battery manufacturing process. For example, at least one of the controllers 120a, 120b, 120c, and 120d may be configured to match the jelly roll ID and the carrier ID based on cell tracking data CTDa obtained from a sub-equipment 110a that performs a sub-process of loading jelly rolls placed on a tray onto a carrier 115a. Here, the cell tracking data CTDa may include time data relating to the time the jelly roll ID was generated and the time the carrier ID was identified. At least one of the controllers 120a, 120b, 120c, and 120d may be configured to match the jelly roll ID and the carrier ID based on the time difference between the time the jelly roll ID was generated and the time the carrier ID was identified.

[0066] According to one embodiment, at least one of the controllers 120a, 120b, 120c, and 120d may be configured to match a plurality of carrier IDs corresponding to each of a plurality of carriers into which the same jelly roll is loaded during the secondary battery manufacturing process. For example, at least one of the controllers 120a, 120b, 120c, and 120d may be configured to match a first carrier ID corresponding to carrier 115a and a second carrier ID corresponding to carrier 115b based on cell tracking data CTDb obtained from sub-equipment 110b which performs a sub-process of unloading the jelly roll loaded on carrier 115a and loading it onto carrier 115b, and coupling the jelly roll loaded on carrier 115b with a lower insulator. Here, the cell tracking data CTDb may include time data relating to a first time when the first carrier ID was identified by sub-equipment 110b and a second time when the second carrier ID was identified. At least one of the controllers 120a, 120b, 120c, and 120d may be configured to match a first carrier ID with a second carrier ID based on the time difference between a first time and a second time. At least one buffer of the controllers 120a, 120b, 120c, and 120d may store matchings between jelly roll IDs based on cell tracking data CTDa and carrier IDs corresponding to carrier 115a. At least one of the controllers 120a, 120b, 120c, and 120d may be configured to match jelly roll IDs with carrier IDs corresponding to carrier 115b based on matchings stored in the buffer and matchings between first carrier IDs and second carrier IDs based on cell tracking data CTDb.

[0067] At least one of the controllers 120a, 120b, 120c, and 120d may be configured to acquire a CAN ID corresponding to the cell case into which the jelly roll was inserted, based on the cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDDi, CTDj, CTDm, CTDn.

[0068] According to one embodiment, at least one of the controllers 120a, 120b, 120c, and 120d may be configured to match a jelly roll ID corresponding to a jelly roll and a CAN ID corresponding to a cell case into which the jelly roll is inserted during the secondary battery manufacturing process. For example, at least one of the controllers 120a, 120b, 120c, and 120d may be configured to match a carrier ID and a CAN ID corresponding to a carrier 115b based on cell tracking data CTDc obtained from a sub-equipment 110c that performs a sub-process of inserting a jelly roll loaded onto a carrier 115b into a cell case. Here, the cell tracking data CTDc may include time data relating to a third time when the carrier ID was identified by the sub-equipment 110c and a fourth time when the CAN ID was identified. At least one of the controllers 120a, 120b, 120c, and 120d may be configured to match a carrier ID and a CAN ID based on the time difference between the third time and the fourth time. At least one buffer of controllers 120a, 120b, 120c, and 120d may store matchings between jelly roll IDs based on cell tracking data CTDa, CTDb and carrier IDs corresponding to carrier 115b. At least one of controllers 120a, 120b, 120c, and 120d may be configured to match jelly roll IDs to CAN IDs based on matchings stored in the buffer and matchings between carrier IDs and CAN IDs based on cell tracking data CTDc.

[0069] According to one embodiment, at least one of the controllers 120a, 120b, 120c, and 120d may be configured to map an ID acquired in each sub-process to process data and / or inspection data acquired in the sub-process. Here, process data may include information related to the equipment used to perform the process (e.g., motor load value, RPM, etc.) and the time the process was performed. Inspection data may include measurement information obtained by scanning the dimensions of the semi-finished product to be inspected, an image obtained by imaging the semi-finished product to be inspected (e.g., X-ray image, vision image, etc.), and state information of the semi-finished product inspected based on at least one of the measurement information and the image. Mapping may mean concatenating and storing IDs and data so that data acting as values ​​can be referenced through an ID acting as a key. That is, by mapping IDs to process data and / or inspection data, process data and / or inspection data can be referenced through IDs.

[0070] The traceability in the manufacturing of secondary batteries can be improved by having at least one of the controllers 120a, 120b, 120c, and 120d track the cell ID, process data, and inspection data of semi-finished cells as they pass through each sub-process of the secondary battery manufacturing system 1000 through the aforementioned operations.

[0071] In the following, using the example of a secondary battery manufacturing process by the secondary battery manufacturing system 1000 being a CAN-type battery manufacturing process, we will specifically describe how to match at least two of the jelly roll ID, carrier ID, CAN ID, and lot ID in each of the multiple sub-processes included in the CAN-type battery manufacturing process, and how to map the IDs to process data. However, this is merely an example for the sake of explanation, and the cell tracking method of this disclosure is not limited to the CAN-type battery manufacturing process but can also be applied to the pouch-type battery manufacturing process.

[0072] Referring to Figures 1 to 3, a jelly roll JR may be provided at P10. Providing the jelly roll JR may include winding a positive electrode sheet PS, a negative electrode sheet NS, and a separation membrane SP, and cutting the positive electrode sheet PS, negative electrode sheet NS, and a plurality of separation membrane SP so that the winding structure is separated. The positive electrode sheet PS can be wound from the positive electrode roll by an unwinder 11, the negative electrode sheet NS can be wound from the positive electrode roll by an unwinder 13, and the separation membrane sheets SS can be wound from the separation membrane roll by unwinders 15, 17. The positive electrode sheet PS may include a positive electrode current collector and a positive electrode active material. The negative electrode sheet NS may include a negative electrode current collector and a negative electrode active material.

[0073] The thickness of the positive electrode current collector can range from approximately 3 μm to approximately 500 μm. The positive electrode current collector may not cause chemical changes in the final manufactured secondary battery and may have high conductivity. The positive electrode current collector may include, for example, stainless steel, aluminum, nickel, titanium, calcined carbon, and aluminum. The positive electrode current collector may also include stainless steel surface-treated with carbon, nickel, titanium, silver, etc. The surface of the positive electrode current collector may include a fine uneven structure to enhance the adhesion of the active material. The positive electrode current collector may be in the form of a film, sheet, foil, net, porous material, foam, nonwoven fabric, etc.

[0074] The positive electrode active material is a substance capable of undergoing electrochemical reactions. The positive electrode active material can be a lithium transition metal oxide. Examples of positive electrode active materials include layered compounds such as lithium cobalt oxide (LiCoO2) and lithium nickel oxide (LiNiO2) substituted with one or more transition metals, lithium manganese oxide substituted with one or more transition metals, lithium nickel-based oxides represented by the chemical formula LiNi1-yMyO2 (where M is one of Co, Mn, Al, Cu, Fe, Mg, B, Cr, Zn, and Ga, and 0.01≦y≦0.7), and Li1+zNi1 / 3Co1 / 3Mn1 / 3O2, Li1+zNi0.4Mn0.4Co0.2O2, and Li1+zNibMncCo1-(b+c+d)MdO(2-e)Ae (where -0.5≦z≦0. This may include lithium nickel cobalt manganese composite oxide represented by the chemical formula Li1+xM1-yM'yPO4-zXz (where M is a transition metal, more specifically Fe, Mn, Co, and Ni; M' is Al, Mg, and Ti; X is F, S, and N; -0.5≦x≦+0.5; 0≦y≦0.5; and 0≦z≦0.1).

[0075] The thickness of the negative electrode current collector can be in the range of approximately 3 μm to approximately 500 μm. The negative electrode current collector may not cause chemical changes in the final manufactured secondary battery and may have high conductivity. The negative electrode current collector may include copper, stainless steel, aluminum, nickel, titanium, calcined carbon, and aluminum-cadmium alloys. The negative electrode current collector may also include stainless steel surface-treated with carbon, nickel, titanium, silver, etc. The surface of the negative electrode current collector may include a fine uneven structure to enhance the adhesion of the active material. The negative electrode current collector may be in the form of a film, sheet, foil, net, porous material, foam, nonwoven fabric, etc.

[0076] The negative electrode active material may contain carbon such as graphitizable carbon and carbon-based carbon. The negative electrode active material may contain, for example, metal composite oxides such as LixFe2O3 (0 ≤ x ≤ 1), LixWO2 (0 ≤ x ≤ 1), SnxMe1-xMe’yOz (where Me is any one of Mn, Fe, Pb, and Ge, Me’ is any one of Al, B, P, Si, elements of Group 1, Group 2, Group 3 of the periodic table, and halogen, 0 < x ≤ 1, 1 ≤ y ≤ 3, 1 ≤ z ≤ 8). The negative electrode active material may contain, for example, lithium metal, lithium alloy, silicon-based alloy, and tin-based alloy. The negative electrode active material may contain, for example, metal oxides such as SnO, SnO2, PbO, PbO2, Pb2O3, Pb3O4, Sb2O3, Sb2O4, Sb2O5, GeO, GeO2, Bi2O3, Bi2O4, Bi2O5. The negative electrode active material may contain, for example, conductive polymers such as polyacetylene, Li-Co-Ni-based materials, and the like.

[0077] The positive electrode sheet PS, the negative electrode sheet NS, and the separator SP can be wound on the surface of the mandrel. The positive electrode sheet PS, the negative electrode sheet NS, and the separator SP can be wound by the rewinder 19. By winding the positive electrode sheet PS, the negative electrode sheet NS, and the separator SP on the mandrel, cutting and separating them, and then welding the positive electrode tab PT and the negative electrode tab NT to the separated wound structure, a jelly roll JR can be provided. The positive electrode tab PT can be welded to the plain part of the positive electrode, and the negative electrode tab NT can be welded to the plain part of the negative electrode. The positive electrode tab PT and the negative electrode tab NT can be welded, for example, by ultrasonic welding, but are not limited thereto.

[0078] The processor 130 and / or the server 200 may be configured to acquire first process data and first inspection data corresponding to the P10 process in which the jelly roll JR is manufactured.

[0079] According to one embodiment, the first process data may include information related to the equipment used to perform the P10 process that manufactured the jelly roll JR (e.g., tension information of the positive electrode sheet PS, negative electrode sheet NS, separation membrane SP, and winding information of the rewinder 19) and at least one of the time the P10 process was performed.

[0080] According to one embodiment, the first inspection data may include measurement information obtained by scanning the dimensions of the elements constituting the jelly roll JR, an image obtained by imaging the elements constituting the jelly roll JR with a vision machine, and state information of the jelly roll JR inspected based on at least one of the measurement information and the image. Here, the measurement information may include the dimensions (e.g., thickness, width) of the positive electrode sheet PS, negative electrode sheet NS, and separation membrane SP, the dimensions (e.g., thickness, width) of the positive electrode tab PT and negative electrode tab NT, the loading amount of coating material on the electrode sheets PS and NS, the dimensions (e.g., thickness, width) of the insulating material provided on the coating material, the dimensions (e.g., thickness, width) of the overlapping section between the coating material and the insulating material, and information regarding mismatching between the coating lane on the upper surface of the electrode sheets PS and NS and the coating lane on the lower surface of the electrode sheets PS and NS. The image may include appearance images of the positive electrode sheet PS, negative electrode sheet NS, and separation membrane SP, and appearance images of the positive electrode tab PT and negative electrode tab NT, obtained by imaging through a vision machine. Condition information may include a determination of the quality of the jelly roll JR based on measurement information and at least one of images. For example, condition information may include at least one of the following: information regarding the presence or absence of defects determined based on the dimensions of the elements constituting the jelly roll JR (e.g., positive electrode sheet PS, negative electrode sheet NS, separation membrane SP, positive electrode tab PT, negative electrode tab NT, coating material, insulating material); and information regarding the type of defect determined based on the appearance image of the elements constituting the jelly roll JR (e.g., pinhole defects, crater defects, line defects, crack defects, side ring defects, island defects, fold defects, wrinkle defects, dent defects, scratch defects).

[0081] Next, referring to Figures 1, 2, and 4, the jelly rolls JR can be loaded into the tray 20 at P20. The jelly rolls JR can be arranged in rows and columns on the tray 20. This allows the jelly rolls JR to be arranged in a matrix on the tray 20.

[0082] Next, referring to Figures 1, 2, 4, and 5, at P30, the jelly rolls JR can be unloaded from the tray 20 and loaded onto the carrier 115a. Sub-equipment 110a may include a pick-and-place machine configured to move the jelly rolls JR from the tray 20 to the carrier 115a.

[0083] Sub-equipment 110a may include a data matrix reader 111a, a controller 113a, and a carrier 115a for the data matrix DM1 of tray 20. The controller 113a may be configured to control the acquisition of data matrix reader 111a and the operation of the pick-and-place machine.

[0084] One of the data matrix readers 111a may be configured to sense the data matrix DM1 of tray 20. If the data matrix DM1 is successfully read, the data matrix reader 111a may be configured to transfer a signal indicating the tray ID to the controller 113a. The tray ID may include multiple symbols to demarcate and / or identify tray 20. The tray ID may be used to demarcate tray 20. Here, symbols can be codes, characters, and displays that indicate any meaning.

[0085] Reading from the data matrix DM1 may include taking an image containing the data matrix DM1 and obtaining the information contained in the data matrix DM1 from the image. Furthermore, reading from the data matrix DM1 may further include identifying the tray ID based on the information contained in the data matrix DM1.

[0086] The controller 113a may be configured to load the positive lot ID and positive count from a server, such as a Manufacturing Execution System (MES), triggered by the identification of the tray ID. Alternatively, the controller 113a may be configured to load the negative lot ID and negative count from a server, such as a Manufacturing Execution System (MES), triggered by the identification of the tray ID. The technical ideas of this disclosure will be described below in part by embodiments in which the positive lot ID is used to generate the jelly roll ID. However, this is illustrative and does not limit the technical ideas of this disclosure in any way. Here, the positive count and negative count indicate the order in which the jelly rolls were manufactured in the winder equipment. The controller 113a may be configured to determine the coordinates of the jelly roll JR on the tray based on the operation of a pick-and-place machine.

[0087] According to one embodiment, the controller 113a may be configured to generate (or assign) a jelly roll ID based on the positive electrode lot ID, positive electrode count, tray ID, and tray coordinates. According to another embodiment, the controller 113a may transfer cell tracking data CTDa, including the positive electrode lot ID, positive electrode count, tray ID, and tray coordinates, to the controller 120a. The controller 120a may be configured to generate (or assign) a jelly roll ID based on the transferred cell tracking data CTDa. Here, the jelly roll ID may not be identified by sensing the data matrix, but rather may be a virtual ID generated based on the required data.

[0088] Due to their semi-finished nature, jelly rolls (JRs) may not contain a physical data matrix. Therefore, the jelly roll ID assigned at the Jelly Roll JR processing stage can be generated and managed on an equipment network or factory automation network, and may be referred to as a virtual ID. According to exemplary embodiments, the jelly roll ID may include a positive electrode lot ID, positive electrode count, tray ID, and tray coordinates.

[0089] Here, since the jelly rolls JR are fed into the sub-equipment 110a according to their arrangement on tray 20, the symbol of the jelly roll ID, which indicates the tray coordinates of the jelly roll ID, can represent the order in which the jelly rolls JR are fed into the sub-equipment 110a. Since sub-equipment 110a is the first stage of the assembly process, the feeding of the jelly rolls JR into sub-equipment 110a is sometimes referred to as feeding the jelly rolls JR into the assembly process.

[0090] The controller 120a may transfer the jelly roll ID of the jelly roll JR to the processor 130 and / or server 200. According to one embodiment, the processor 130 and / or server 200 may be configured to map the jelly roll ID obtained from the controller 120a with the first process data and first inspection data of the jelly roll JR obtained in the P10 process. For example, the processor 130 and / or server 200 may be configured to map the electrode lot ID of the jelly roll JR with the first process data and first inspection data, and to map the jelly roll ID with the first process data and first inspection data via the electrode lot ID used to generate the jelly roll ID. Another data matrix reader 111a may be configured to sense the data matrix DM2a of the carrier 115a. This may allow it to identify the carrier ID of the carrier 115a from the data matrix DM2a of the carrier 115a. The carrier ID of the carrier 115a may include a plurality of symbols for distinguishing and / or identifying the carrier 115a. The carrier ID may be used for the classification of carrier 115a.

[0091] When the pick-and-place machine picks up a jelly roll JR from tray 20 and places it on carrier 115a, the data matrix DM1 of tray 20 and the data matrix DM2a of carrier 115a may be sensed by the data matrix reader 111a of sub-equipment 110a. Controller 113a may be configured to transfer the jelly roll ID to controller 120a. Data matrix reader 111a may be configured to transfer the carrier ID of carrier 115a to controller 120a.

[0092] The controller 120a may be configured to collect cell tracking data CTDa of the sub-equipment 110a. The cell tracking data CTDa may include data for obtaining the jelly roll ID of the jelly roll JR. For example, the cell tracking data CTDa may include the jelly roll ID generated by the sub-equipment 110a. In this case, the controller 120a can obtain the jelly roll ID simply by identifying the cell tracking data CTDa. As another example, the cell tracking data CTDa may include a positive lot ID, positive count, tray ID, and tray coordinates for generating the jelly roll ID. In this case, the controller 120a can generate the jelly roll ID of the jelly roll JR based on the positive lot ID, positive count, tray ID, and tray coordinates included in the cell tracking data CTDa. The cell tracking data CTDa of the sub-equipment 110a may further include the carrier ID of the carrier 115a.

[0093] The cell tracking data CTDa may further include time data relating to the time the jelly roll ID was generated and the time the carrier ID was identified from the carrier 115a data matrix DM1a. Additionally, the cell tracking data CTDa may further include the time when the carrier ID was matched to the jelly roll ID.

[0094] The controller 120a may be configured to match the carrier ID of carrier 115a with the jelly roll ID of jelly roll JR. According to one embodiment, the controller 120a may be configured to match the jelly roll ID and the carrier ID by comparing the time when the jelly roll ID was generated and the time when the carrier ID was identified, based on the cell tracking data CTDa. For example, if the time difference between the time when the jelly roll ID was generated and the time when the carrier ID was identified is within a preset threshold time value, the generated jelly roll ID and the identified carrier ID can be matched with each other. On the other hand, if the time difference between the time when the jelly roll ID was generated and the time when the carrier ID was identified exceeds a preset threshold time value, the generated jelly roll ID can be matched with other carrier IDs whose time difference is within the threshold time value.

[0095] If reading from data matrix DM1 fails, the data matrix reader 111a may be configured to generate an unrecognized jelly roll ID. This may result in the cell tracking data CTDa containing an unrecognized jelly roll ID. The unrecognized jelly roll ID can be matched with the carrier ID of carrier 115a.

[0096] Unrecognized jelly roll IDs may have different generation rules (or formats) than regular jelly roll IDs, and can be easily distinguished from regular jelly roll IDs. For example, the length of an unrecognized jelly roll ID may differ from the length of a regular jelly roll ID.

[0097] Similarly, if reading the data matrix DM2a fails, an unrecognized carrier ID may be matched with a jelly roll ID. An unrecognized carrier ID may have a different generation rule (or format) than a carrier ID, and can be easily distinguished from a carrier ID. For example, the length of an unrecognized carrier ID may differ from the length of a carrier ID.

[0098] Next, referring to Figures 1, 2, 5, and 6, the lower insulator and the jelly roll JR can be connected at P40. The lower insulator can prevent unwanted short circuits between the cell case CC (see Figure 6), which will be described later, and the jelly roll JR. The lower insulator and the jelly roll JR can be connected by sub-equipment 110b.

[0099] Sub-equipment 110b may include a data matrix reader 111b and a controller 113b. The controller 113b may be configured to control the operation of equipment elements for the capture of data matrix reader 111b and coupling of the lower insulator and jelly roll JR.

[0100] The carrier 115a of sub-equipment 110a may be configured to transfer the jelly roll JR to sub-equipment 110b. The jelly roll JR may be moved from the carrier 115a of sub-equipment 110a to the carrier 115b of sub-equipment 110b, for example, by a pick-and-place machine.

[0101] The data matrix readers 111b may be configured to sense the data matrices DM2a and DM2b of carriers 115a and 115b. One of the data matrix readers 111b may be configured to sense the data matrix DM2a of carrier 115a, and another of the data matrix readers 111b may be configured to sense the data matrix DM2b of carrier 115b. If the reading of data matrices DM2a and DM2b is successful, the data matrix readers 111b may be configured to transfer a signal indicating the carrier ID of carriers 115a and 115b to the controller 120a. Based on the transferred signal, the controller 120a may identify the carrier ID of carriers 115a and 115b. The carrier ID of carrier 115b may include multiple symbols to distinguish and / or identify carrier 115b. The carrier ID may be used to distinguish carrier 115b.

[0102] Controller 120a may be configured to collect cell tracking data CTDb from sub-equipment 110b. Cell tracking data CTDb may include carrier IDs of carriers 115a and 115b. Cell tracking data CTDb may further include time data relating to the time when carrier ID of carrier 115a was identified by sub-equipment 110b and the time when carrier ID of carrier 115b was identified. Cell tracking data CTDb may also further include the time when carrier IDs of carriers 115a and 115b were matched with each other. If reading from either data matrix DM2a or DM2b fails, cell tracking data CTDb may include unrecognized jelly roll IDs.

[0103] Controller 120a may be configured to match the carrier ID of carrier 115a with the carrier ID of carrier 115b. According to one embodiment, controller 120a may be configured to match the carrier IDs of carriers 115a and 115b with each other by comparing the identification times of carrier IDs based on cell tracking data CTDb. For example, if the time difference between the identification times of each carrier ID is within a preset threshold time value, the identified carrier IDs may be matched with each other. On the other hand, if the time difference between the identification times of each carrier ID exceeds a preset threshold time value, each identified carrier ID may be matched with another carrier ID whose time difference is within the threshold time value. Since the buffer of controller 120a stores the matching between the carrier ID of carrier 115a and the jelly roll ID of jelly roll JR, controller 120a may be configured to match the jelly roll ID of jelly roll JR with the carrier ID of carrier 115b via the carrier ID of carrier 115a.

[0104] The controller 120a can acquire second process data and second inspection data corresponding to the P40 process targeting the jelly roll JR from the sub-equipment 110b.

[0105] According to one embodiment, the second process data may include at least one of the following: information related to the equipment used to perform the P40 process on the jelly roll JR, the time the P40 process was performed, and information related to the lower insulator coupled with the jelly roll JR.

[0106] According to one embodiment, the second inspection data may include measurement information obtained by scanning the dimensions (e.g., thickness, width) of the lower insulator coupled to the jelly roll JR, images obtained by imaging the jelly roll JR and the lower insulator through a vision machine, and condition information of the jelly roll JR and the lower insulator inspected based on at least one of the measurement information and the images. Here, the condition information may include at least one of the following: information regarding the presence or absence of defects in the lower insulator determined based on the dimensions of the lower insulator, and information regarding the type of defect (e.g., scratches on the bottom of the jelly roll JR, defects in the in-tab and out-tab of the electrodes of the jelly roll JR, etc.) determined based on the external images of the jelly roll JR and the lower insulator.

[0107] The controller 120a may be configured to map the acquired second process data and second inspection data with the carrier ID of the carrier 115b. This may provide tracking of the second process data and second inspection data based on the carrier ID and / or the jelly roll ID mapped to the carrier ID.

[0108] Referring to Figures 1, 2, and 7, the jelly roll JR can be inserted into the cell case CC at P50. The P50 step is sometimes referred to as the CAN insertion step. The jelly roll JR can be inserted into the cell case CC by sub-equipment 110c. The cell case CC may be a metal CAN. The cell case CC may be either a cylindrical CAN or a rectangular CAN. The technical idea of ​​this disclosure will be explained below, focusing on embodiments where the cell case CC is a cylindrical CAN. However, this is for illustrative purposes only and does not limit the technical idea of ​​this disclosure in any way. Experts in the industry can easily arrive at examples where the cell case CC is a rectangular CAN based on what is described herein.

[0109] The carrier 115b of sub-equipment 110b may be configured to transfer the jelly roll JR to sub-equipment 110c. Sub-equipment 110c may include a data matrix reader 111c and a controller 113c. The controller 113c may be configured to control the operation of equipment elements for imaging by the data matrix reader 111c and inserting the jelly roll JR into the cell case CC.

[0110] The data matrix reader 111b may be configured to sense the data matrix DM2a of the carrier 115b and the data matrix DM3 of the cell case CC. If the data matrix DM2b is successfully read, the data matrix reader 111c may be configured to transfer a signal indicating the carrier ID of the carrier 115b to the controller 120a. Based on the transferred signal, the controller 120a can identify the carrier ID of the carrier 115b. If the data matrix DM3 is successfully read, the data matrix reader 111c may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120a.

[0111] The CAN ID of a cell case CC may include multiple symbols to distinguish and / or identify the cell case CC. That is, the CAN ID may include information for identifying the cell case CC. The CAN ID may be used for distinguishing the cell case CC. The CAN ID may include symbols indicating the coordinates of the cell case CC on the CAN tray. Accordingly, it may include tray coordinates.

[0112] The loading order of cell cases CC can generally be determined based on the arrangement of cell cases CC on the CAN tray. That is, since the cell cases CC are loaded into sub-equipment 110c according to their arrangement on the CAN tray, the symbols of the CAN ID indicating the tray coordinates of the jelly roll ID can indicate the loading order of the jelly roll JR to sub-equipment 110a.

[0113] Controller 120a may be configured to collect cell tracking data CTDc from sub-equipment 100c. Cell tracking data CTDc may include the carrier ID of carrier 115b and the CAN ID of cell case CC. Cell tracking data CTDc may further include time data relating to the time when the carrier ID of carrier 115b was identified by sub-equipment 110c and the time when the CAN ID of cell case CC was identified. Cell tracking data CTDc may also further include the time when the jelly roll ID of jelly roll JR and the CAN ID of cell case CC were matched.

[0114] The controller 120a may be configured to match the carrier ID of carrier 115b with the CAN ID of cell case CC. According to one embodiment, the controller 120a may be configured to match the carrier ID of carrier 115b with the CAN ID of cell case CC by comparing the identification time of the carrier ID and the identification time of the CAN ID based on the cell tracking data CTDc. For example, if the time difference between the time the carrier ID is identified and the time the CAN ID is identified is within a preset threshold time value, the identified carrier ID and the identified CAN ID can be matched with each other. On the other hand, if the time difference between the time the carrier ID is identified and the time the CAN ID is identified exceeds a preset threshold time value, the identified carrier ID can be matched with another CAN ID whose time difference is within the threshold time value. Since the buffer of controller 120a stores the matching between the carrier ID of carrier 115a and the jelly roll ID of jelly roll JR (or the matching between the carrier ID of carrier 115b and the jelly roll ID of jelly roll JR), controller 120a may be configured to match the jelly roll ID of jelly roll JR to the CAN ID of cell case CC via the carrier ID of carrier 115a (or the carrier ID of carrier 115b).

[0115] The cell tracking data CTDc of sub-equipment 115c may further include the carrier ID of carrier 115b matched to the jelly roll ID. If reading the data matrix DM2b fails, the data matrix reader 111b may be configured to forward the unrecognized carrier ID to the controller 120a. The controller 120a may be configured to issue an unrecognized jelly roll ID in response to the receipt of the unrecognized carrier ID, and the cell tracking data CTDc may include the unrecognized jelly roll ID.

[0116] If reading from data matrix DM3 fails, the data matrix reader 111b can be configured to transfer unrecognized CAN IDs to controller 120a, thereby allowing cell tracking data CTDc to include unrecognized CAN IDs.

[0117] This allows some of the Jelly Roll IDs of Jelly Roll JR to be matched with unrecognized CAN IDs, and some of the CAN IDs of Cell Case CC to be matched with unrecognized Jelly Roll IDs.

[0118] The controller 120a can acquire third process data and third inspection data corresponding to the P50 process targeting the jelly roll JR from the sub-equipment 110c.

[0119] According to one embodiment, the third process data may include at least one of the following: information related to the equipment used to perform the P50 process on the jelly roll JR, the time the P50 process was performed, and information related to the cell case CC into which the jelly roll JR was inserted.

[0120] According to one embodiment, the third inspection data may include measurement information obtained by scanning the dimensions of the cell case CC, an image obtained by imaging the cell case CC through a vision machine, and condition information of the cell case CC inspected based on at least one of the measurement information and the image. Here, the condition information may include at least one of information regarding the presence or absence of defects in the cell case CC determined based on the dimensions of the cell case CC and information regarding the type of defect (e.g., defects in the opening) determined based on the external image of the cell case CC.

[0121] The controller 120a may be configured to map the acquired third process data and third inspection data with the CAN ID of the cell case CC. This allows for tracking of the third process data and third inspection data based on at least one of the CAN ID, the carrier ID mapped to the CAN ID, and the jelly roll ID. Additionally, based on the data matrix on the cell case CC, historical data of the semi-finished product for providing the battery cell BC (see Figure 12) can be collected, allowing for tracking of the secondary battery manufacturing process.

[0122] The following describes steps P60 to P180 in which cell cases CC with jelly rolls JR inserted are introduced during the secondary battery manufacturing process.

[0123] Next, at P60, the negative electrode tab NT (see Figure 3) of the jelly roll JR and the negative electrode terminal of the cell case CC can be welded. The process at P50 is sometimes referred to as the negative electrode tab welding process. The tab welding process may be resistance welding. By pressing the negative electrode tab NT (see Figure 3) of the jelly roll JR and the negative electrode terminal of the cell case CC with an electrode rod and applying a voltage (or current) between them, the negative electrode tab NT (see Figure 3) of the jelly roll JR and the cell case CC can be melt-welded. The negative electrode tab NT (see Figure 3) of the jelly roll JR can be welded to the negative electrode terminal of the cell case CC by sub-equipment 110d.

[0124] Sub-equipment 110d may include a data matrix reader 111d and a controller 113d. The controller 113d may be configured to control the operation of equipment elements for capturing images with the data matrix reader 111d and welding the negative electrode tab NT (see Figure 3) of the jelly roll JR to the negative electrode terminal of the cell case CC.

[0125] The data matrix reader 111d may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111d may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120a. Based on the transferred signal, the controller 120a can identify the CAN ID of the cell case CC.

[0126] Controller 120a may be configured to collect cell tracking data CTDd from sub-equipment 110d. Cell tracking data CTDd may include the CAN ID of cell case CC. Cell tracking data CTDd may further include time data relating to the time when the CAN ID of cell case CC was identified by sub-equipment 110d. Cell tracking data CTDd may also further include the time when the CAN ID of cell case CC was matched. If reading the data matrix DM3 fails, cell tracking data CTDd from sub-equipment 110d may include unrecognized CAN IDs of cell case CC.

[0127] Next, in P70, a forging (swaging) process can be performed on the cell case. Sub-equipment 110d may further include forging tools configured to perform the forging process on the cell case CC. In the forging process, the upper part of the cell case CC may be compression-molded so that its outer diameter is reduced. Here, the upper part of the cell case CC may include an opening into which the jelly roll JR is inserted. Steps may be formed on the cell case CC in the forging process.

[0128] The controller 120a can acquire fourth process data and fourth inspection data corresponding to processes P60 and P70 targeting the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) from the sub-equipment 110d.

[0129] According to one embodiment, the fourth process data may include information related to the equipment used to perform the P60 and P70 processes on the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted), the time taken to perform the P60 and P70 processes, and at least one of the set values ​​used in the P60 and P70 processes (e.g., pressure applied to the negative terminal of the cell case CC, applied voltage (or current), welding position, number of welds, forging die information, etc.).

[0130] According to one embodiment, the fourth inspection data may include measurement information obtained by scanning the dimensions of the cell case CC, an image obtained by imaging the cell case CC through a vision machine, and state information of the cell case CC inspected based on at least one of the measurement information and the image. Here, the image may include at least one of the following: an appearance image of the jelly roll JR obtained by imaging through a vision machine before the negative electrode tab NT process, an appearance image of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) obtained by imaging through a vision machine after the negative electrode tab NT process, and an appearance image of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) obtained by imaging through a vision machine after the forging process. The condition information may include at least one of the following: information regarding the presence or absence of defects in the cell case CC determined based on the dimensions of the cell case CC, and information regarding the type of defect (e.g., defective jelly roll JR hole, defective jelly roll JR hole, defective negative electrode tab NT, etc.) determined based on the appearance image of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted).

[0131] The controller 120a may be configured to map the acquired fourth process data and fourth inspection data with the CAN ID of the cell case CC. This may provide tracking of the fourth process data and fourth inspection data based on at least one of the CAN ID, the carrier ID mapped to the CAN ID, and the jelly roll ID.

[0132] Next, in P80, an upper insulator can be inserted into the cell case CC. The upper insulator can prevent unwanted short circuits between the cap assembly CA (see Figure 9), which will be described later, and the jelly roll JR.

[0133] Sub-equipment 110e may include a data matrix reader 111e and a controller 113e. The controller 113e may be configured to control the operation of equipment elements for the acquisition of data matrix reader 111e and insertion of the upper insulator.

[0134] The data matrix reader 111e may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111e may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120b. Based on the transferred signal, the controller 120b can identify the CAN ID of the cell case CC.

[0135] Controller 120b may be configured to collect cell tracking data CTDd from sub-equipment 110e. Cell tracking data CTDd may further include time data relating to the time when the CAN ID of cell case CC was identified by sub-equipment 110e. Cell tracking data CTDd may also include the CAN ID of cell case CC. Cell tracking data CTDd may further include the time when the CAN ID of cell case CC was matched. If reading the data matrix DM3 fails, cell tracking data CTDd may include an unrecognized CAN ID of cell case CC.

[0136] The controller 120b can acquire fifth process data and fifth inspection data corresponding to the P80 process targeting the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) from the sub-equipment 110e.

[0137] According to one embodiment, the fifth process data may include at least one of the following: information related to the equipment used to perform the P80 process on the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted), the time the P80 process was performed, and information related to the upper insulator coupled with the jelly roll JR.

[0138] According to one embodiment, the fifth inspection data may include measurement information obtained by scanning the dimensions (e.g., thickness, width) of the upper insulator inserted into the cell case CC, an image obtained by imaging the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and the upper insulator through a vision machine, and condition information of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and the upper insulator inspected based on at least one of the measurement information and the image. Here, the condition information may include at least one of information regarding whether or not the upper insulator is defective, determined based on the dimensions of the upper insulator, and information regarding the type of defect, determined based on the appearance image of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and the upper insulator.

[0139] The controller 120b may be configured to map the acquired fifth process data and fifth inspection data with the CAN ID of the cell case CC. This may provide tracking of the fifth process data and fifth inspection data based on the carrier ID and / or the jelly roll ID mapped to the carrier ID.

[0140] Next, in P90, grooves may be formed in the cell case CC. These grooves can be used for the secure attachment of the gasket, which will be described later. The process in P90 is sometimes referred to as beading. The grooves in the cell case CC may be formed by sub-equipment 110f.

[0141] Sub-equipment 110f may include a data matrix reader 111f and a controller 113f. The controller 113f may be configured to control the operation of the groove-forming tool on the data matrix reader 111f for imaging and on the cell case CC.

[0142] The data matrix reader 111f may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111f may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120b. Based on the transferred signal, the controller 120b can identify the CAN ID of the cell case CC.

[0143] The controller 120b may be configured to collect cell tracking data CTDf from the sub-equipment 110f. The cell tracking data CTDf may further include time data relating to the time when the CAN ID of cell case CC was identified by the sub-equipment 110f. The cell tracking data CTDf may also include the CAN ID of cell case CC. The cell tracking data CTDf may further include the time when the CAN ID of cell case CC was matched. If reading the data matrix DM3 fails, the cell tracking data CTDf may include an unrecognized CAN ID of cell case CC.

[0144] The controller 120b can acquire sixth process data and sixth inspection data corresponding to the P90 process targeting the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) from the sub-equipment 110f.

[0145] According to one embodiment, the sixth process data may include at least one of the following: information related to the equipment used to perform the P90 process on the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted), the time the P90 process was performed, and information related to the grooves formed on the cell case CC (e.g., target shape, size, number of grooves, etc.).

[0146] According to one embodiment, the sixth inspection data may include an image acquired by imaging the jelly roll JR (or the cell case CC in which the jelly roll JR is inserted) through a vision machine, and state information of the jelly roll JR (or the cell case CC in which the jelly roll JR is inserted) inspected based on the image. Here, the state information may include information regarding the type of defect (e.g., groove defects) determined based on the external appearance image of the jelly roll JR (or the cell case CC in which the jelly roll JR is inserted).

[0147] The controller 120b may be configured to map the acquired sixth process data and sixth inspection data to the CAN ID of the cell case CC. This may provide tracking of the sixth process data and sixth inspection data based on the carrier ID and / or the jelly roll ID mapped to the carrier ID.

[0148] Next, in P100, an X-ray inspection can be performed on the cell case CC. The X-ray inspection can be performed using sub-equipment 110g. The X-ray inspection can be used to check the electrode alignment and for defects.

[0149] The sub-equipment 110g may include a data matrix reader 111g and a controller 113g. The controller 113g may be configured to control the operation of the imaging and X-ray substrate inspection machine of the data matrix reader 111g.

[0150] The data matrix reader 111g may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111g may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120b. Based on the transferred signal, the controller 120b can identify the CAN ID of the cell case CC.

[0151] Controller 120b may be configured to collect cell tracking data CTDg from sub-equipment 110g. Cell tracking data CTDg may further include time data relating to the time when the CAN ID of cell case CC was identified by sub-equipment 110g. Cell tracking data CTDg may also include the CAN ID of cell case CC. Cell tracking data CTDg may further include the time when the CAN ID of cell case CC was matched. If reading the data matrix DM3 fails, cell tracking data CTDg may include an unrecognized CAN ID of cell case CC.

[0152] The controller 120b can acquire seventh process data and seventh inspection data corresponding to the P100 process targeting the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) from the sub-equipment 110g.

[0153] According to one embodiment, the seventh process data may include at least one of the equipment used to perform the P100 process on the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and the time at which the P100 process was performed.

[0154] According to one embodiment, the seventh inspection data may include an X-ray image of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and electrode condition information inspected based on the X-ray image. Here, the condition information may include the type of defect determined based on the X-ray image of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) (e.g., defective electrode arrangement, defective size, defective electrode tab alignment, etc.).

[0155] The controller 120b may be configured to map the acquired seventh process data and seventh inspection data with the CAN ID of the cell case CC. This may provide tracking of the seventh process data and seventh inspection data based on at least one of the CAN ID, the carrier ID mapped to the CAN ID, and the jelly roll ID.

[0156] Next, referring to Figures 1, 2, and 8, in P110, the electrolyte can be injected into the cell case CC. The process in P110 is sometimes referred to as the electrolyte injection process. The electrolyte can be formed by sub-equipment 110h.

[0157] Sub-equipment 110h may include a data matrix reader 111h, a controller 113h, and an electrolyte injector 117h. The controller 113h may be configured to control the imaging of the data matrix reader 111h and the operation of the electrolyte injector 117h. The electrolyte injector 117h may be configured to inject the electrolyte into the cell case CC using vacuum, capillary action, and wetting.

[0158] The data matrix reader 111h may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111h may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120c. Based on the transferred signal, the controller 120c can identify the CAN ID of the cell case CC.

[0159] Controller 120c may be configured to collect cell tracking data CTDh from sub-equipment 110h. Cell tracking data CTDh may further include time data relating to the time when the CAN ID of cell case CC was identified by sub-equipment 110h. Cell tracking data CTDh may also include the CAN ID of cell case CC. Cell tracking data CTDh may further include the time matched to the CAN ID of cell case CC. If reading data matrix DM3 fails, cell tracking data CTDh may include unrecognized CAN IDs of cell case CC.

[0160] The controller 120c can acquire eighth process data and eighth inspection data corresponding to the P110 process targeting the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) from the sub-equipment 110h.

[0161] According to one embodiment, the eighth process data may include at least one of the following: information related to the equipment used to perform the P110 process on the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted), the time during which the P110 process was performed, and information related to the electrolyte (e.g., electrolyte components, injection amount, etc.).

[0162] According to one embodiment, the eighth inspection data may include an image obtained by imaging the cell case CC through a vision machine and state information of the cell case CC inspected based on the image. Here, the state information may include the degree of electrolyte impregnation determined based on the external image of the cell case CC.

[0163] The controller 120c may be configured to map the acquired eighth process data and eighth inspection data with the CAN ID of the cell case CC. This may provide tracking of the eighth process data and eighth inspection data based on at least one of the CAN ID, the carrier ID mapped to the CAN ID, and the jelly roll ID.

[0164] Next, referring to Figures 1, 2, and 9, in step P120, the positive electrode tab PT (see Figure 3) of the jelly roll JR and the positive electrode terminal of the cap assembly case CA can be welded. Step P120 is sometimes referred to as the positive electrode tab welding step. The positive electrode tab PT (see Figure 3) of the jelly roll JR can be welded to the positive electrode terminal of the cap assembly by sub-equipment 110i.

[0165] Sub-equipment 110i may include a data matrix reader 111i and a controller 113i. The controller 113i may be configured to control the operation of the data matrix reader 111i's imaging and welding tools.

[0166] The data matrix reader 111i may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111i may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120c. Based on the transferred signal, the controller 120c can identify the CAN ID of the cell case CC.

[0167] The controller 120c may be configured to collect cell tracking data CTDi from the sub-equipment 110i. The cell tracking data CTDi may further include time data relating to the time when the CAN ID of cell case CC was identified by the sub-equipment 110i. The cell tracking data CTDi may also include the CAN ID of cell case CC. The cell tracking data CTDi may further include the time when the CAN ID of cell case CC was matched. If reading the data matrix DM3 fails, the cell tracking data CTDi may include an unrecognized CAN ID of cell case CC.

[0168] The controller 120c can acquire ninth process data and ninth inspection data corresponding to the P120 process targeting the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) from the sub-equipment 110i.

[0169] According to one embodiment, the ninth process data may include at least one of the following pieces of information: information related to the equipment used to perform the P120 process on the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted), the time taken to perform the P120 process, and information related to the set values ​​used in the P120 process (e.g., pressure applied to the positive terminal of the cell case CC, applied voltage (or current), welding position, number of welds, etc.).

[0170] According to one embodiment, the ninth inspection data may include measurement information obtained by scanning the dimensions of the cap assembly case CA, an image obtained by imaging the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and the cap assembly case CA through a vision machine, and condition information of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and the cap assembly case CA inspected based on at least one of the measurement information and the image. Here, the condition information may include at least one of information regarding whether or not there is a defect in the cap assembly case CA determined based on the dimensions of the cap assembly case CA and information regarding the type of defect determined based on the appearance image of the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) and the cap assembly case CA.

[0171] The controller 120c may be configured to map the acquired ninth process data and ninth inspection data with the CAN ID of the cell case CC. This may provide tracking of the ninth process data and ninth inspection data based on at least one of the CAN ID, the carrier ID mapped to the CAN ID, and the jelly roll ID.

[0172] Next, referring to Figures 1, 2, and 10, the battery cell can be sealed at P130. The process at P130 is sometimes referred to as the crimping process. In the crimping process, the upper part of the battery cell BC, including the gasket and various safety devices (PTC, Safety Vent, Current Break), is pressed, and the battery cell BC can be sealed. Here, the upper part of the battery cell BC may be the portion of the cell case CC into which grooves were formed in the beading process.

[0173] Sub-equipment 110j may include a data matrix reader 111j, a controller 113j, and a crimping tool 117j. The controller 113j may be configured to control the acquisition of data matrix readers 111j and the operation of crimping tool 117j.

[0174] The data matrix reader 111j may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111j may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120c. Based on the transferred signal, the controller 120c can identify the CAN ID of the cell case CC.

[0175] Next, at P140, the battery cells can be sized. By pressing the battery cells BC in the axial direction (or height direction), the total height of the battery cells BC can be adjusted (or reduced). Battery cell sizing can be performed by sub-equipment 110j.

[0176] The controller 120c may be configured to collect cell tracking data CTDj from the sub-equipment 110j. The cell tracking data CTDj may further include time data relating to the time when the CAN ID of cell case CC was identified by the sub-equipment 110j. The cell tracking data CTDj may also include the CAN ID of cell case CC. The cell tracking data CTDj may further include the time when the CAN ID of cell case CC was matched. If reading the data matrix DM3 fails, the cell tracking data CTDj may include an unrecognized CAN ID of cell case CC.

[0177] The controller 120c can acquire 10th process data and 10th inspection data corresponding to processes P130 and P140 targeting the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted) from the sub-equipment 110j.

[0178] According to one embodiment, the 10th process data may include at least one of the following pieces of information: information related to the equipment used to perform the P130 and P140 processes on the jelly roll JR (or the cell case CC into which the jelly roll JR is inserted); the time taken to perform the P130 and P140 processes; information related to the gaskets to be fixed to the grooves; and set values ​​used in the P130 and P140 processes (e.g., the pressure and number of presses applied to the top of the battery cell BC during sealing, the target total height of the battery cell BC during sizing, etc.).

[0179] According to one embodiment, the tenth inspection data may include an image acquired by imaging the jelly roll JR (or the cell case CC in which the jelly roll JR is inserted) through a vision machine, and state information of the jelly roll JR (or the cell case CC in which the jelly roll JR is inserted) inspected based on the image. Here, the state information may include information regarding the type of defect determined based on the external appearance image of the jelly roll JR (or the cell case CC in which the jelly roll JR is inserted).

[0180] The controller 120c may be configured to map the acquired 10th process data and 10th inspection data with the CAN ID of the cell case CC. This may provide tracking of the 10th process data and 10th inspection data based on the carrier ID and / or the jelly roll ID mapped to the carrier ID.

[0181] Next, referring to Figures 1, 2, and 11, the battery cell BC can be cleaned at P150. The cleaning of the battery cell BC can be performed by a sub-equipment 110k. The sub-equipment 110k may include a cleaning fluid sprayer 117k configured to spray cleaning fluid.

[0182] Next, the battery cell BC can be inspected in P160. Inspection of the battery cell BC may include, for example, visual inspection using a vision machine and 3D scanning of the battery cell BC. The battery cell BC can be inspected by sub-equipment 110l.

[0183] The processor 130 and / or server 200 can acquire 11th process data and 11th inspection data corresponding to the P160 process targeting battery cells BC from the sub-equipment 110l.

[0184] According to one embodiment, the 11th process data may include at least one of the equipment used to perform the P160 process on the battery cell BC, and the time at which the P160 process was performed.

[0185] According to one embodiment, the 11th inspection data may include measurement information obtained by scanning the dimensions of the battery cell BC, an image obtained by imaging the battery cell BC through a vision machine, and at least one of the state information of the battery cell BC inspected based on at least one of the measurement information and the image. Here, the state information may include at least one of the following: information regarding the presence or absence of defects in the battery cell BC determined based on the dimensions of the battery cell BC, and information regarding the type of defect (e.g., upper and / or lower meandering defects, side defects, etc.) determined based on the external image of the battery cell BC.

[0186] The processor 130 and / or server 200 may be configured to map the acquired 11th process data and 11th inspection data with the CAN ID of the cell case CC. This may provide tracking of the 11th process data and 11th inspection data based on at least one of the CAN ID, the carrier ID mapped to the CAN ID, and the jelly roll ID.

[0187] Next, referring to Figures 1, 2, and 12, a data matrix DM4 can be formed on the battery cell BC at P170. The data matrix DM4 can be formed by methods such as laser marking and inkjet marking. The data matrix DM4 can be formed by a marking machine 117m. The data matrix DM4 may contain information regarding the lot ID of the battery cell BC. That is, when a data matrix reader reads the data matrix DM4, a signal indicating the lot ID of the battery cell BC may be generated.

[0188] The lot ID of a battery cell BC may include multiple symbols to distinguish and / or identify the battery cell BC. That is, the lot ID may contain information for identifying the battery cell BC. The lot ID may be used for distinguishing the battery cell BC.

[0189] Sub-equipment 110m may include a data matrix reader 111m, a controller 113m, and a marking machine 117m. The controller 113m may be configured to control the imaging of the data matrix reader 111m and the operation of the marking machine 117m.

[0190] One of the data matrix readers 111m may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111m may be configured to transfer a signal indicating the CAN ID of the cell case CC to the controller 120d. Based on the transferred signal, the controller 120d can identify the CAN ID of the cell case CC.

[0191] Another data matrix reader 111m may be configured to sense the data matrix DM4 formed by the marking machine 117m. If the data matrix DM3 is successfully read, the data matrix reader 111m may be configured to transmit a signal indicating the lot ID of the battery cell BC to the controller 113m. The controller 113m may be configured to transmit a signal indicating the lot ID of the battery cell BC to the controller 120d. Based on the transmitted signal, the controller 120d can identify the lot ID of the battery cell BC.

[0192] The controller 120d may be configured to collect cell tracking data CTDm from the sub-equipment 110m. The cell tracking data CTDm may include the CAN ID of the cell case CC and the lot ID of the battery cell BC. The cell tracking data CTDm may further include time data relating to the time when the CAN ID of the cell case CC was identified by the sub-equipment 110m and the time when the lot ID of the battery cell BC was identified.

[0193] The controller 120d may be configured to match the CAN ID of the cell case CC with the lot ID of the battery cell BC. According to one embodiment, the controller 120d may be configured to match the CAN ID of the cell case CC with the lot ID of the battery cell BC by comparing the identification time of the CAN ID and the identification time of the lot ID based on the cell tracking data CTDm. For example, if the time difference between the time the CAN ID was identified and the time the lot ID was identified is within a preset threshold time value, the identified CAN ID and the identified lot ID can be matched with each other. On the other hand, if the time difference between the time the CAN ID was identified and the time the lot ID was identified exceeds a preset threshold time value, the identified CAN ID can be matched with another lot ID whose time difference is within the threshold time value.

[0194] The cell tracking data CTDm may further include the time it was matched to the CAN ID of cell case CC. If reading data matrix DM3 fails, the cell tracking data CTDm may include an unrecognized CAN ID of cell case CC. If reading data matrix DM4 fails, the cell tracking data CTDm may include an unrecognized lot ID of cell case CC.

[0195] Next, the internal resistance of battery cell BC can be measured at P180. The internal resistance of battery cell BC can be determined based on the open-circuit voltage of battery cell BC. The internal resistance of battery cell BC can be measured by sub-equipment 110n.

[0196] Sub-equipment 110n may include a data matrix reader 111n and a controller 113n. The controller 113n may be configured to control the operation of the jig and measuring device for capturing images from the data matrix reader 111n and measuring the internal resistance of battery cells BC.

[0197] The data matrix reader 111n may be configured to sense the data matrix DM3 of the cell case CC. If the data matrix DM3 is successfully read, the data matrix reader 111n may be configured to transfer a signal indicating the CAN ID of the battery cell BC to the controller 120d. Based on the transferred signal, the controller 120d can identify the CAN ID of the cell case CC.

[0198] The controller 120d may be configured to collect cell tracking data CTDn from the sub-equipment 110n. The cell tracking data CTDn may include the CAN ID of the battery cell BC. The cell tracking data CTDn may further include the time matched to the CAN ID of the battery cell BC. If reading the data matrix DM3 fails, the cell tracking data CTDn may include the unrecognized CAN ID of the cell case CC.

[0199] The controller 120d can obtain a 12th inspection data corresponding to P180 for the battery cell BC from the sub-equipment 110n. Here, the 12th inspection data may include information related to the internal resistance measurement results for the battery cell BC. For example, the 12th inspection data may include a state measurement value of the battery cell BC (e.g., open-circuit voltage, internal resistance, etc.) and information related to whether or not there is an abnormality in the battery cell BC as inspected based on the state measurement value.

[0200] The controller 120d may be configured to match the acquired 12th inspection data with the CAN ID of the cell case CC. This may provide a traceability for the 12th inspection data based on at least one of the CAN ID, the carrier ID matched with the CAN ID, and the jelly roll ID.

[0201] As described above, the battery cell assembly process can be tracked by the jelly roll ID, carrier ID, CAN ID, and lot ID. That is, after shipment, the battery cell BC can provide a lot ID based on the readout of the data matrix DM4, and based on the lot ID, tracking of historical data for sub-processes of the assembly process can be provided.

[0202] More specifically, the sub-processes performed by sub-equipment 110a, 110b, and 110c can be tracked by jelly roll ID, and the jelly roll ID can be matched to the CAN ID using the cell tracking data CTDc of sub-equipment 110c. The sub-processes performed by sub-equipment 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j, 110m, and 110n can be tracked by CAN ID, and the CAN ID can be matched to the lot ID using the cell tracking data of sub-equipment 110n.

[0203] Controllers 120a, 120b, 120c, and 120d may be configured to collect cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, and CTDn from controllers 113a, 113b, 113c, 113d, 113e, 113f, 113g, 113h, 113i, 113j, 113m, and 113n. More specifically, controller 120a can be configured to collect cell tracking data CTDa, CTDb, CTDc, and CTDd collected from controllers 113a, 113b, 113c, and 113d; controller 120b can be configured to collect cell tracking data CTDe, CTDf, and CTDg collected from controllers 113e, 113f, and 113g; controller 120c can be configured to collect cell tracking data CTDh, CTDi, and CTDj collected from controllers 113h, 113i, and 113j; and controller 120d can be configured to collect cell tracking data CTDm and CTDn collected from controllers 113m and 113n.

[0204] Controllers 120a, 120b, 120c, and 120d can perform network hub functions. The assignment of cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, and CTDn collected from controllers 113a, 113b, 113c, 113d, 113e, 113f, 113g, 113h, 113i, 113j, 113m, and 113n shown in Figure 2 is illustrative and does not limit the technical ideas of this disclosure in any way.

[0205] Controllers 113a, 113b, 113c, 113d, 113e, 113f, 113g, 113h, 113i, 113j, 113m, 113n and controllers 120a, 120b, 120c, 120d can each be a PLC (Programmable Logic Controller). A PLC is a special form of microprocessor-based controller that uses programmable memory to store instructions and controls machines and processes by embodying functions such as logic, sequencing, timing, counting, and arithmetic. PLCs are easy to operate and program.

[0206] Each of the controllers 113a, 113b, 113c, 113d, 113e, 113f, 113g, 113h, 113i, 113j, 113m, 113n and controllers 120a, 120b, 120c, 120d may include a power supply, CPU, input interface, output interface, communication interface, and memory device. The power supply may be configured to supply power to other components of the controller, such as the CPU, input interface, output interface, communication interface, and memory device, for the operation of the controller. The memory device may include ROM (Read Only Memory) configured to store system programs such as operational systems and RAM (Random Access Memory) configured to store user programs and data such as I / O device status information, timers, counters, and values ​​of other internal devices. The CPU may be configured to implement logic and control communication between modules that convert input signals into output operational signals. The CPU may operate based on the system programs and user programs stored in the memory device. The CPU may be configured to record (Write) or read (Read) inspection and measurement data to the data area of ​​the memory device based on system and user programs. Conditions and data of industrial equipment and production processes may be transferred to the CPU via the input module. The results processed by the CPU may be transferred to the actuator via the output module. A communication interface may be configured to relay data transmission and reception between the controller and other network elements.

[0207] However, the controllers 113a, 113b, 113c, 113d, 113e, 113f, 113g, 113h, 113i, 113j, 113m, 113n and controllers 120a, 120b, 120c, 120d may each include a simple controller, a microprocessor, a complex processor such as a CPU or GPU, a software-based processor, dedicated hardware, and firmware. The controller may be embodied, for example, by a general-purpose computer or by application-specific hardware such as a DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), or ASIC (Application Specific Integrated Circuit).

[0208] The processor 130 may be configured to receive cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, and CTDn from controllers 120a, 120b, 120c, and 120d. The processor 130 may also be configured to collect cell tracking data from controllers 120a, 120b, 120c, and 120d.

[0209] The processor 130 may be configured to store a log file containing at least one of the jelly roll ID, carrier ID, CAN ID, and lot ID. The log file containing at least one of the jelly roll ID, carrier ID, CAN ID, and lot ID may include, for example, the log files of the data matrix readers 111a, 111b, 11111d, 111e, 111f, 111g, 111h, 111i, 111j, 111m, and 111n, the trigger log files, NG code log files, and equipment data log files of the controllers 120a, 120b, 120c, and 120d.

[0210] The processor 130 may be configured to generate a server log file based on a log file containing at least one of the jelly roll ID, carrier ID, CAN ID, and lot ID. The server log file may include logs from data matrix readers 111a, 111b, 111c, 111d, 111e, 111f, 111g, 111h, 111i, 111j, 111m, and 111n, trigger logs from controllers 120a, 120b, 120c, and 120d, NG code logs, and equipment data logs.

[0211] Server log files may be in a format accessible by server 200. Server log files may conform to HTTP (Hypertext Transfer Protocol). Server log files may be in HTML format, for example.

[0212] The processor 130 may be configured to transfer cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, and CTDn to the server 200. The server 200 may be configured to store the cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, and CTDn. The server 200 may be configured to store matching between different IDs used at each phase of the assembly process, such as jelly roll ID, carrier ID, CAN ID, and lot ID, thereby providing a traceability to historical data of the secondary battery assembly process of the product during manufacturing or after shipment.

[0213] Server 200 may include a physical server or a cloud server. Server 200 may be embodied as a virtual server, but is not limited to that. Server 200 may provide data and analysis results to the operator through various frameworks. The framework may include protocols that assist in data transfer so that client devices can visualize the data through a user interface and provide updated visualizations as the data is computed by Server 200. The protocols that assist in said data transfer may use HTML, JavaScript, and / or JSON.

[0214] Server 200 may include various APIs (Application Programming Interfaces) for storing data in databases and other data management tools. These APIs can also be used to retrieve data in the databases of various data management systems. Data management systems may provide access to databases, pull data from databases, retrieve data, and generate metrics. Here, metrics are tools for visualizing data. Metrics include time-series generated measurements and can be used for application monitoring and generating status alerts.

[0215] According to one embodiment, the server 200 may be configured to obtain a roll map of the jelly roll JR from an electrode manufacturing system (not shown) that performs a prior electrode manufacturing process in the secondary battery assembly process.

[0216] Here, the electrode manufacturing process may be a process for manufacturing jelly rolls JR through a mixing process in which various raw materials necessary for electrode manufacturing are mixed, a coating process in which an active material and a predetermined insulating material are applied to the surface of a metal electrode plate which is a current collector to form a positive electrode and a negative electrode, a rolling process in which the coated electrode is rolled, and a slitting process in which the rolled electrode is cut to the specifications of jelly rolls JR. In such mixing, coating, rolling, and slitting processes, the electrode can be wound between an unwinder and a rewinder and carried out in a roll-to-roll state. A roll map can simulate the electrode progression in each of the multiple sub-processes included in the electrode manufacturing process and can be represented in the form of bars (BARs). On the roll map, the longitudinal dimensions of the electrode can be represented by coordinates, and information regarding the quality of the electrode can be illustrated along with these coordinates. For example, information on the appearance of electrodes acquired by an image-based inspection device such as a vision machine, information on electrode breaks and joints, information on electrode parts that have been sampled and inspected, information on electrode parts that are scheduled to be scrapped, information on scrapped electrode parts, information on whether or not there are defects in the coating material and insulating material on the electrode, and information on the type of electrode defect (e.g., pinhole defect, crater defect, line defect, crack defect, side ring defect, island defect, break defect, wrinkle defect, dent defect, scratch defect, etc.) may be shown on the roll map along with the coordinates.

[0217] Server 200 may be configured to map cell IDs corresponding to semi-finished cells to roll maps. According to one embodiment, server 200 may be configured to map jelly roll IDs of jelly rolls JR to roll maps.

[0218] For example, the server 200 may be configured to map the jelly roll ID to the roll map based on the electrode lot ID of the jelly roll JR. The server 200 may be configured to obtain the electrode lot ID of the jelly roll JR from an electrode manufacturing system (not shown). Furthermore, the server 200 may be configured to obtain the mapping between the electrode lot ID of the jelly roll JR and the roll map from the electrode manufacturing system (not shown). The electrode manufacturing system (not shown) may be configured to generate the electrode lot ID of the jelly roll JR and generate a roll map based on the electrode progression of the jelly roll JR in the electrode manufacturing process. The electrode manufacturing system (not shown) may also be configured to map the electrode lot ID of the jelly roll JR to the roll map and transfer the mapping between the electrode lot ID and the roll map to the server 200.

[0219] As mentioned above, the jelly roll ID of the jelly roll JR is generated by the controller 113a based on the electrode lot ID loaded from the server 200, so the server 200 can be configured to map the jelly roll ID to the roll map via the electrode lot ID. Thereafter, the server 200 can be configured to map the roll map to at least one of the carrier ID, CAN ID, and lot ID that is matched with the jelly roll ID. This can provide tracking of the roll map based on the jelly roll ID, carrier ID, CAN ID, and lot ID that are mapped to the roll map.

[0220] According to one embodiment, the server 200 may be configured to acquire activation data of battery cells BC from an activation system (not shown) that performs a subsequent activation process in the secondary battery assembly process.

[0221] Here, the activation process may be a process that stabilizes the battery structure and imparts battery characteristics to the battery cells BC manufactured through the assembly process through multiple sub-processes such as aging, charging, and discharging. The activation data may include setting data related to the set values ​​used in the multiple sub-processes included in the activation process (e.g., aging temperature, charge / discharge SOC, etc.), state data related to the state of the battery cells BC acquired during the activation process (e.g., voltage, current, temperature, SOC (State of Charge)), and diagnostic data that diagnoses abnormalities in the battery cells BC (e.g., low voltage, internal short circuit, etc.) based on the state data.

[0222] According to one embodiment, the server 200 may be configured to acquire activation data from an activation system (not shown). Furthermore, the server 200 may be configured to acquire a mapping between the CAN ID and / or lot ID of the battery cell BC and the activation data from the activation system (not shown). The activation system (not shown) may be configured to identify the CAN ID and / or lot ID of the battery cell BC to be subjected to the activation process and to generate activation data for the battery cell BC in the activation process. The activation system (not shown) may also be configured to map the CAN ID and / or lot ID of the battery cell BC to the activation data and to transfer the mapping between the CAN ID and / or lot ID and the activation data to the server 200. As described above, the CAN ID and / or lot ID of the battery cell BC are identified by the secondary battery manufacturing system 1000 and mapped to process data and IDs from previous processes (e.g., jelly roll ID, carrier ID), so that a trace to the activation data of the battery cell BC can be provided based on at least one of the jelly roll ID, carrier ID, CAN ID, and lot ID.

[0223] The processor 130 and server 200 can be embodied in hardware, firmware, software, or a combination thereof. For example, the processor 130 and server 200 may include computing devices such as workstation computers, desktop computers, laptop computers, and tablet computers. The processor 130 and server 200 may include any of the following: a simple controller, a complex processor such as a microprocessor, CPU, or GPU, a processor configured with software, dedicated hardware, and firmware. The processor 130 and server 200 can be embodied, for example, in a general-purpose computer or in application-specific hardware such as a DSP (Digital Signal Processor), FPGA (Field Programmable Gate Array), and ASIC (Application Specific Integrated Circuit).

[0224] The operation of processor 130 and server 200 may be embodied as instructions stored in 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 transferring information in a form readable by a machine (e.g., a computing device). For example, the machine-readable medium may include ROM (Read Only Memory), RAM (Random Access Memory), magnetic disk storage media, optical storage media, flash memory, electrical, optical, acoustic, or other forms of radio signals (e.g., carrier waves, infrared signals, digital signals, etc.) and any other signals. Processor 130 and server 200 may consist of firmware, software, routines, and instructions for performing the operations described above, or any of the processes described below. For example, processor 130 and server 200 may be instantiated in memory.

[0225] The secondary battery manufacturing system 1000 can embody a plug-in architecture with an API for data acquisition to provide plug-and-play connectivity for sensors, measuring instruments, and inspection machines. This allows resources at specific process steps and sites to be easily transferred to other processes and sites, or new resources to be easily introduced at each process step and site.

[0226] In some embodiments, the secondary battery manufacturing system 1000 may further include a manual input system that allows for the input of manufacturing data by an operator. The secondary battery manufacturing system 1000 may allow for operator data input using input tools and computer-based input of manufacturing data, such as scraping Excel files. The manual input system may be, for example, a Human-Machine Interface (HMI) of a Supervisory Control and Data Acquisition (SCADA) system. SCADA systems generally include a combination of software and hardware such as PLCs and Remote Terminal Units (RTUs). An HMI is a screen that facilitates communication between the operator and the SCADA system and is a key component of the SCADA system. For example, manual input via an HMI may include the selection of defect types and the reflection of performance at completion.

[0227] Figure 13 is a diagram illustrating how a secondary battery manufacturing system 1000 according to an exemplary embodiment manages data. Figure 14 is a diagram showing the roll map data illustrated in Figure 13.

[0228] Referring to Figures 13 and 14, the secondary battery manufacturing system 1000 may be configured to map and manage roll map data 1030 collected based on the electrode manufacturing process 1010 and data 1060a, 1060b, 1060c, 1060d, 1060e, 1070a, 1070b, 1070c, 1070d, 1070e, 1080a, 1080b, 1080c, 1080d, 1080e collected based on the assembly process 1040.

[0229] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to acquire roll map data 1030 based on the electrode manufacturing process 1010. The roll map data 1030 may be data that simulates the electrode progression in the mixing process 1020a, coating process 1020b, rolling process 1020c, and slitting process 1020d included in the electrode manufacturing process 1010 and is represented in bar form.

[0230] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to acquire semi-finished product identification data 1060a, 1060b, 1060c, 1060d, 1060e, process data 1070a, 1070b, 1070c, 1070d, 1070e, and inspection data 1080a, 1080b, 1080c, 1080d, 1080e based on the assembly process 1040.

[0231] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to acquire the jelly roll ID 1060a of the jelly roll JR, process data 1070a of the winding process 1050a, and inspection data 1080a based on the winding process 1050a (e.g., process P10 in Figure 1) included in the assembly process 1040. In this case, the process data 1070a and the inspection data 1080a may be mapped to the jelly roll ID 1060a.

[0232] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to map the jelly roll ID 1060a with the roll map data 1030. This may provide tracking of the roll map data 1030, process data 1070a, and inspection data 1080a based on the jelly roll ID 1060a.

[0233] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to acquire the carrier ID 1060b of the carrier, process data 1070b of the carrier transfer process 1050b, and inspection data 1080b based on the carrier transfer process 1050b (e.g., processes P30 and P40 in Figure 1) included in the assembly process 1040. In this case, the process data 1070b and inspection data 1080b may be mapped to the carrier ID 1060b.

[0234] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to match carrier ID 1060b with jelly roll ID 1060a. This may provide tracking for roll map data 1030, process data 1070a, 1070b and inspection data 1080a, 1080b based on at least one of jelly roll ID 1060a and carrier ID 1060b.

[0235] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to acquire the CAN ID 1060c of the cell case CC, process data 1070c of the CAN insertion process 1050c, and inspection data 1080c based on the CAN insertion process 1050c (e.g., process P50 in Figure 1) included in the assembly process 1040. In this case, the process data 1070c and inspection data 1080c may be mapped to the CAN ID 1060c.

[0236] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to match CAN ID 1060c with carrier ID 1060b. This may provide tracking for roll map data 1030, process data 1070a, 1070b, 1070c and inspection data 1080a, 1080b, 1080c based on at least one of jelly roll ID 1060a, carrier ID 1060b, and CAN ID 1060c.

[0237] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to acquire the CAN ID 1060d of the cell case CC, process data 1070d of the CAN molding process 1050d, and inspection data 1080d based on the CAN molding process 1050d (e.g., processes P60 to P140 in Figure 1) included in the assembly process 1040. In this case, the process data 1070d and inspection data 1080d may be mapped to the CAN ID 1060d.

[0238] On the other hand, since CAN ID 1060c and CAN ID 1060d are identical to each other, tracking for roll map data 1030, process data 1070a, 1070b, 1070c, 1070d and inspection data 1080a, 1080b, 1080c, 1080d can be provided based on at least one of jelly roll ID 1060a, carrier ID 1060b, and CAN ID 1060c, without the need for separate ID matching.

[0239] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to acquire the battery cell ID 1060e (e.g., lot ID) of the battery cell BC, process data 1070e of the cleaning / inspection process 1050e, and inspection data 1080e based on the cleaning / inspection process 1050e (e.g., processes P150 to P180 in Figure 1) included in the assembly process 1040. In this case, the process data 1070e and inspection data 1080e may be mapped to the battery cell ID 1060e.

[0240] According to one embodiment, the secondary battery manufacturing system 1000 may be configured to match battery cell ID 1060e with CAN ID 1060c. This may provide tracking for roll map data 1030, process data 1070a, 1070b, 1070c, 1070d, 1070e and inspection data 1080a, 1080b, 1080c, 1080d, 1080e based on at least one of jelly roll ID 1060a, carrier ID 1060b, CAN ID 1060c, and battery cell ID 1060e.

[0241] (Third and fourth embodiments)

[0242] Figure 15 is a flowchart illustrating a method for managing cell tracking data (CTDc) according to an exemplary embodiment.

[0243] Figure 16 is a diagram illustrating a method for managing cell tracking data CTDc according to an exemplary embodiment. More specifically, Figure 16 shows a portion of the cell tracking data CTDc that includes the jelly roll ID.

[0244] Figure 17 is a diagram illustrating a method for managing cell tracking data CTDc according to an exemplary embodiment. More specifically, Figure 17 shows a portion of the cell tracking data CTDc that includes the CAN ID.

[0245] Referring to Figures 1, 2, 5, and 15 through 17, the recovery of unrecognized jelly roll IDs and unrecognized CAN IDs may be performed by Server 200. Server 200 may include logic for recovering unrecognized jelly roll IDs and unrecognized CAN IDs. This logic may operate based on a pre-configured management cycle for cell tracking data CTDc.

[0246] Cell tracking data CTDc may be loaded at P210. The logic for recovering unrecognized IDs may include a query to retrieve and / or load the portion of cell tracking data CTDc containing the unrecognized jelly roll ID or unrecognized CAN ID from the database on server 200.

[0247] Next, cell tracking data CTDc can be restored at P220. Restoration of cell tracking data may include restoring unrecognized jelly roll IDs from cell tracking data CTDc collected at P50 or restoring unrecognized CAN IDs from cell tracking data CTDc collected at P50.

[0248] Referring to Figures 1, 2, 5, 15, and 16, an unrecognized jelly roll ID in cell tracking data CTDc can be reconstructed based on jelly roll IDs that are temporally adjacent to the unrecognized ID. According to an exemplary embodiment, an unrecognized jelly roll ID can be reconstructed based on jelly roll IDs that precede the unrecognized jelly roll ID. According to an exemplary embodiment, an unrecognized jelly roll ID can be reconstructed based on jelly roll IDs that follow the unrecognized jelly roll ID. According to an exemplary embodiment, an unrecognized jelly roll ID can be reconstructed based on jelly roll IDs that precede the unrecognized jelly roll ID and preceding jelly roll IDs that follow the unrecognized jelly roll ID.

[0249] Here, an unrecognized jelly roll ID and a jelly roll ID being temporally adjacent means that there is no jelly roll ID in the cell tracking data CTDc that is matched at a third time between the first time the unrecognized jelly roll ID was matched and the second time the jelly roll ID was matched. In other words, if a jelly roll ID is arranged immediately next to an unrecognized jelly roll ID in the temporal arrangement of the cell tracking data CTDc, then the jelly roll ID of the unrecognized jelly roll ID may also be said to be temporally adjacent.

[0250] As mentioned above, the jelly roll ID can be generated based on the positive electrode lot ID, positive electrode count, tray ID, and tray coordinates. The last four symbols in the jelly roll ID indicate the row and column coordinates on tray 20. The other symbols in the jelly roll ID may indicate the positive electrode lot ID, positive electrode count, and tray ID. "A396Nca0003CC1D", highlighted in shading in the table in Figure 14, can have a different format from the jelly roll ID and may be an unrecognized jelly roll ID.

[0251] The jelly rolls are arranged in a matrix on tray 20 and sequentially fed into sub-equipment 110a. Therefore, chronologically adjacent jelly roll IDs may originate from jelly rolls JR arranged adjacently on tray 20. This allows the unrecognized jelly roll ID "A396Nca0003CC1D" to be reconstructed based on the preceding jelly roll ID "WCCHJ71123JTM2AA06110117" and / or the subsequent jelly roll ID "WCCHJ71123JTM2AA06110401".

[0252] In this example, the jelly rolls JR can be arranged on the tray 20 in an 18x18 matrix. In the jelly roll IDs "WCCHJ71123JTM2AA06110117" and "WCCHJ71123JTM2AA06110401", the last four characters indicate the coordinates of the jelly rolls JR on the tray 20. More specifically, the last four characters "0117" in the jelly roll ID "WCCHJ71123JTM2AA06110117" indicate that the jelly roll ID originates from the jelly roll JR that was in the 17th column of the first row of the tray 20, and the last four characters "0401" in the jelly roll ID "WCCHJ71123JTM2AA06110401" indicate that the jelly roll ID originates from the jelly roll JR that was in the first column of the fourth row of the tray 20. On the other hand, since the jelly rolls JR are arranged in an 18x18 matrix on tray 20, it can be understood that there is no jelly roll ID derived from the jelly roll JR that was in the 18th column of the first row of tray (20), as shown in Figure 16. Therefore, the jelly roll ID of the jelly roll JR that was in the 17th column of the first row of tray 20 can be understood to be adjacent to the jelly roll ID of the jelly roll JR that was in the 18th column of the first row of tray 20.

[0253] As a result, the unrecognized jelly roll ID "A396Nca0003CC1D" can be reconstructed based on a temporally adjacent jelly roll ID. Therefore, as shown in Figure 16, the jelly roll JR corresponding to jelly roll ID "WCCHJ71123JTM2AA06110401" is arranged in a different row on tray 20 than the jelly roll JR corresponding to the unrecognized jelly roll ID "A396Nca0003CC1D", and the jelly roll JR corresponding to jelly roll ID "WCCHJ71123JTM2AA06110117" is arranged in the same row on tray 20 as the jelly roll JR corresponding to the unrecognized jelly roll ID "A396Nca0003CC1D". Accordingly, the unrecognized jelly roll ID "A396Nca0003CC1D" can be reconstructed as "WCCHJ71123JTM2AA06110118".

[0254] In other words, restoring an unrecognized jelly roll ID may include changing the symbol indicating the coordinates on tray 20 (or the input order in the assembly process) from among adjacent jelly roll IDs to the adjacent coordinates. According to an exemplary embodiment, restoring an unrecognized jelly roll ID may include changing the symbol indicating the coordinates on tray 20 (or the input order in the assembly process) from among adjacent jelly roll IDs to the preceding coordinates (or order). According to an exemplary embodiment, restoring an unrecognized jelly roll ID may include changing the symbol indicating the coordinates on tray 20 (or the input order in the assembly process) from among adjacent jelly roll IDs to the succeeding coordinates (or order).

[0255] The above describes the recovery of unrecognized jelly roll IDs derived from embodiments in which jelly roll JRs are arranged on tray 20 in an 18x18 array, but this is merely illustrative and does not limit the technical idea of ​​this disclosure in any way. Those skilled in the art will readily be able to recover unrecognized jelly roll IDs derived from embodiments in which jelly roll JRs are arranged on tray 20 in any matrix.

[0256] Referring to Figures 1, 2, 7, 15, and 17, the recovery of an unrecognized CAN ID in cell tracking data CTDc may include recovering the unrecognized CAN ID based on CAN IDs that are temporally adjacent to the unrecognized CAN ID. According to an exemplary embodiment, an unrecognized CAN ID may be recovered based on CAN IDs that precede the unrecognized CAN ID. According to an exemplary embodiment, an unrecognized CAN ID may be recovered based on CAN IDs that follow the unrecognized CAN ID. According to an exemplary embodiment, an unrecognized CAN ID may be recovered based on CAN IDs that precede the unrecognized CAN ID and preceding CAN IDs that follow the unrecognized CAN ID. "AD8Wo600005RQX", highlighted in shade in the table of Figure 17, may have a different format from the CAN ID and may be an unrecognized CAN ID.

[0257] Since the cell cases CC are arranged in a matrix on the CAN tray and sequentially loaded into the sub-equipment 110c, temporally adjacent CAN IDs may originate from jelly rolls JR arranged adjacently on tray 20. That is, adjacent CAN IDs in the cell tracking data CTDc may include sequentially changing symbols. This allows at least one of the CAN ID symbols in the cell tracking data CTDc to indicate the order in which the cell cases CC were loaded into the sub-equipment 110c.

[0258] For example, CAN ID "L1D8P030330T04" may follow CAN ID "L1D8P030330T03", CAN ID "L1D8P030330T05" may follow CAN ID "L1D8P030330T04", and CAN ID "L1D8P030330T06" may follow CAN ID "L1D8P030330T05". This means that part of the CAN ID symbol can indicate the insertion order of the cell case CC from which the CAN ID originated. For example, the last two symbols of the CAN ID may indicate the column coordinates on the CAN tray. For example, the cell case CC on the CAN tray may be arranged in a 17x18 matrix. Referring to Figure 17, the last two symbols of the CAN ID, 03 through 09, are consecutive from OA through OJ, so these can be understood as CAN IDs derived from cell case CC arranged in 17 columns in one row, and the following 17 CAN IDs can similarly be understood as derived from cell case CC arranged in 17 columns in one row.

[0259] The unrecognized CAN ID "AD8Wo600005RQX" can be restored based on the preceding CAN ID "L1D8P030330T0J" and / or the subsequent CAN ID "L1D8P030330T1L". In this example, the cell cases CC on the CAN tray can be arranged in a 17x18 matrix and loaded 17 at a time into the sub-equipment 110c. As a result, CAN ID "L1D8P030330T0J" originates from a different row than the unrecognized CAN ID "AD8Wo600005RQX", and CAN ID "L1D8P030330T1L" originates from the same row as the unrecognized CAN ID "AD8Wo600005RQX". Accordingly, the unrecognized CAN ID "AD8Wo600005RQX" can be restored to "L1D8P030330T1K".

[0260] The above describes an example in which 17 cell cases CC are loaded into the sub-equipment 110c at a time, and the 17 CAN IDs change sequentially. However, this is merely an example and does not limit the technical idea of ​​this disclosure in any way. Those skilled in the art will readily be able to arrive at embodiments in which fewer than 17 or more than 17 cell cases CC are loaded into the sub-equipment 110c simultaneously.

[0261] The P50 cell tracking data CTDc is important for concatenating preceding and succeeding historical data because it includes matching of jelly roll IDs and CAN IDs. According to an exemplary embodiment, unrecognized jelly roll IDs and unrecognized CAN IDs can be recovered based on the rules for jelly roll IDs and CAN IDs in the cell tracking data CTDc, preventing discontinuities in traceability and thus improving the reliability of secondary battery manufacturing.

[0262] (Fifth and sixth embodiments)

[0263] Figure 18 is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment.

[0264] Figure 19 illustrates a method for managing cell tracking data according to an exemplary embodiment.

[0265] Figure 20 is a diagram illustrating a method for managing cell tracking data according to an exemplary embodiment.

[0266] Referring to Figures 1, 2, 8, and 18 through 20, a recovery dataset can be constructed at P310. In Figure 19, in the cell tracking data CTDc of sub-facility 100c collected from controller 113c, the continuity of multiple CAN IDs may be less than the intended number. For example, sub-facility 110c is designed to receive 17 cell cases CC at a time, but the number of cell cases CC received at sub-facility 110c at one time may differ from 17. In this case, it is not possible to select which CAN IDs following an unrecognized CAN ID and which CAN IDs preceding an unrecognized CAN ID are used to recover the unrecognized CAN ID.

[0267] Thus, if an unrecognized CAN ID cannot be recovered using the method shown in Figure 15, a recovery dataset may be configured at P310. More specifically, to recover an unrecognized CAN ID in the cell tracking data, a recovery dataset may be configured that includes the cell tracking data of the current sub-process and the cell tracking data of an adjacent sub-process.

[0268] As an example, the recovery dataset for recovering unrecognized CAN IDs from cell tracking data collected from controller 113c may include cell tracking data CTDc from sub-equipment 110c (i.e., jelly roll insertion equipment) collected from controller 113c and cell tracking data CTDd from sub-equipment 110c (i.e., tab welding equipment) collected from controller 113d. The recovery dataset for recovering unrecognized CAN IDs from cell tracking data CTDc collected from controller 113c is shown in Figure 19.

[0269] For example, the unrecognized ID "AD5Go600007nsZ" in the cell tracking data of equipment 110c lies between CAN ID "D1D4K0201204AB" and CAN ID "D1D4K020120D1H". Therefore, the portion of the cell tracking data collected from sub-equipment 110c (i.e., the tab welding equipment) collected by controller 113d that lies between CAN ID "D1D4K0201204AB" and CAN ID "D1D4K020120D1H" may be included in the reconstructed dataset.

[0270] As another example, a recovery dataset for recovering unrecognized CAN IDs from cell tracking data collected from controller 113n may include cell tracking data CTDn of sub-equipment 110n (i.e., internal resistance testing equipment) collected from controller 113n and cell tracking data CTDm of sub-equipment 110m collected from controller 113m (i.e., lot marking equipment). The recovery dataset for recovering unrecognized CAN IDs from cell tracking data CTDn collected from controller 113n is shown in Figure 19.

[0271] Next, cell tracking data can be restored at P320. Restoring cell tracking data may include restoring unrecognized CAN IDs in cell tracking data CTDc or restoring unrecognized CAN IDs in cell tracking data CTDn collected at P180.

[0272] For example, the unrecognized ID "AD5Go600007nsZ" in the cell tracking data CTDc for equipment 110c lies between CAN ID "D1D4K0201204AB" and CAN ID "D1D4K020120D1H", and can therefore be reconstructed into either "D1D4K0201204AC", which follows "D1D4K0201204AB", or "D1D4K020120D1G", which precedes CAN ID "D1D4K020120D1H". CAN ID "D1D4K0201204AC" lies between CAN ID "D1D4K0201204AB" and CAN ID "D1D4K020120D1H" in the cell tracking data CTDd collected by controller 113d from sub-equipment 110d (i.e., tab welding equipment), and is not included in the cell tracking data of equipment 110c. As a result, the unrecognized ID "AD5Go600007nsZ" in the cell tracking data CTDc of equipment 110c can be restored to CAN ID "D1D4K0201204AC".

[0273] As another example, the earlier CAN IDs in the cell tracking data CTDn of equipment 110n (i.e., the internal resistance measurement equipment) can be matched in the earlier order in the cell tracking data CTDm of equipment 110m (i.e., the lot ID marking equipment), and the later CAN IDs in the cell tracking data CTDn of equipment 110n can be matched in the later order in the cell tracking data CTDm of equipment 110m. In other words, even if the order of multiple CAN IDs in the cell tracking data CTDn of equipment 110n does not match the order of multiple CAN IDs in the cell tracking data CTDm of equipment 110m, the order is maintained.

[0274] The unrecognized ID "AT16Of00008k17" in the cell tracking data CTDn of equipment 110n is between CAN ID "D1D2K020120B1F" and CAN ID "D1D2K020120AOL", and therefore can be restored to "D1D2K020120B0F", which is the CAN ID between CAN ID "D1D2K020120B1F" and CAN ID "D1D2K020120AOL" in the cell tracking data of equipment 110m.

[0275] (The 7th Embodiment)

[0276] FIG. 21 is a flowchart for explaining a method of managing cell tracking data according to an exemplary embodiment.

[0277] FIG. 22 is a diagram for explaining a method of managing cell tracking data according to an exemplary embodiment.

[0278] Referring to FIGS. 21 and 22, first and second restoration data windows W1 and W2 can be configured at P410. The first restoration data window W1 can be provided from cell tracking data including an unrecognized CAN ID.

[0279] The method of FIG. 21 can be used when an unrecognized CAN ID of cell tracking data cannot be restored based on a restoration data set, as in the method of FIG. 18. More specifically, cell tracking data CTDi of a previous process can be used for restoring an unrecognized CAN ID of cell tracking data CTDn, such as in the sub-step of P130. At this time, the order of the CAN IDs of cell tracking data CTDn and the order of cell tracking data CTDi can be different. Thereby, the configuration of the first and second restoration data windows W1 and W2 centered on the unrecognized CAN ID is required.

[0280] In the example of FIG. 22, a first restoration data window W1 can be configured around an unrecognized CAN ID "AD6SoF00000uTK". The first restoration data window W1 can include a plurality of CAN IDs that are temporally adjacent to the unrecognized CAN ID "AD6SoF00000uTK". The first restoration data window W1 can include a set number (e.g., 10) of preceding CAN IDs from the unrecognized CAN ID "AD6SoF00000uTK". The first restoration data window W1 can include a set number (e.g., 10) of subsequent CAN IDs from the unrecognized CAN ID "AD6SoF00000uTK".

[0281] The first CAN ID, "D1D5U0402209GX", and the last CAN ID, "1D5U0402209FQ", can be determined from the first recovery data window W1. The first CAN ID, "D1D5U0402209GX", and the last CAN ID, "1D5U0402209FQ", from the first recovery data window W1 can be used to construct the second recovery data window W2. The second recovery data window W2 may include the portion of the cell tracking data of the equipment 110i collected by the controller 117i between CAN ID "D1D5U0402209GX" and CAN ID "1D5U0402209FQ".

[0282] Next, cell tracking data can be restored in P420. Restoring cell tracking data may involve matching each of the CAN IDs included in the second restoration data window W2 with the CAN ID of the cell tracking data from which the first restoration data window W1 originated. In the example in Figure 22, the CAN ID "D1D5U0402209H6" in the second restoration data window W2 may not match with the CAN ID of the cell tracking data from which the first restoration data window W1 originated. In this case, if only one CAN ID does not match with the CAN ID of the cell tracking data from which the first restoration data window W1 originated, the unrecognized CAN ID can be restored using the corresponding CAN ID. Accordingly, the unrecognized CAN ID "AD6SoF00000uTK" in the first window can be restored to "D1D5U0402209H6".

[0283] The cell tracking method of the secondary battery manufacturing system 1000 will be described below with reference to Figures 23 to 28. More specifically, with reference to Figures 23 to 28, the method by which the secondary battery manufacturing system 1000 tracks cells by matching IDs in the secondary battery manufacturing process can be described.

[0284] Figure 23 is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment.

[0285] Since the method shown in Figure 23 can be carried out using the secondary battery manufacturing system 1000 in Figure 2, explanations that overlap with the above content can be omitted, and the explanation can be given using the configuration in Figure 2.

[0286] The embodiment shown in Figure 23 is only one embodiment, and the order of steps in the various embodiments of this disclosure may differ from that shown in Figure 23. Some steps shown in Figure 23 may be omitted, the order of steps may be changed, or steps may be merged.

[0287] Referring to Figure 23, at P510, the secondary battery manufacturing system 1000 can acquire a cell ID corresponding to a semi-finished cell. According to one embodiment, the secondary battery manufacturing system 1000 can acquire a cell ID based on cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, CTDn.

[0288] Here, the semi-finished cell may include various types of semi-finished cells produced during the manufacturing process by the secondary battery manufacturing system 1000. For example, in the manufacturing process of a CAN-type battery, the semi-finished cell may consist of a jelly roll, which is a structure in which a positive electrode, a negative electrode, and a separator membrane are wound together, or a CAN-type battery cell in which a jelly roll is inserted into a cell case. As another example, in the manufacturing process of a pouch-type battery, the semi-finished cell may consist of a unit cell composed of at least one polarity electrode (e.g., positive electrode and / or negative electrode) and a separator membrane, a stacked electrode assembly formed by stacking multiple unit cells, a folded electrode assembly formed by folding multiple unit cells, or a pouch-type battery cell in which an electrode assembly is inserted into a pouch. In this case, the unit cell can consist of a mono cell, where a positive electrode and a negative electrode are located on the outermost sides, a bi-cell, where electrodes of the same polarity are located on the outermost sides, or a half cell, where a positive electrode or a negative electrode is located between the outermost separation membranes.

[0289] In P520, the secondary battery manufacturing system 1000 may acquire a holder ID corresponding to the holder in which the semi-finished cells are placed. According to one embodiment, the secondary battery manufacturing system 1000 may acquire a holder ID based on cell tracking data CTDa, CTDb, CTDc, CTDd, CTDf, CTDg, CTDh, CTDi, CTDj, CTDm, CTDn.

[0290] Here, the holder may include various types of holders into which semi-finished cells are placed during the manufacturing process by the secondary battery manufacturing system 1000. For example, in the manufacturing process of a CAN-type battery, the holder may consist of a carrier 115a or 115b into which the jelly rolls are placed, or a cell case into which the jelly rolls are inserted. The carrier 115a or 115b may be configured to fold the jelly rolls in a specific sub-process that deals with the jelly rolls. The cell case is a component of a cylindrical battery cell and may be configured into which the jelly rolls are inserted in a specific sub-process. As another example, in the manufacturing process of a pouch-type battery, the holder may consist of a magazine into which unit cells are stacked or a pouch into which unit cells are inserted. The magazine may be configured to stack and fold multiple unit cells to be stacked or folded in the assembly process of a pouch-type battery, after a notching process that forms electrode tabs on the electrode sheet of the unit cell and a lamination process that joins the unit cell to a separator membrane, and before a stacking or folding process that stacks or folds multiple unit cells to form an electrode assembly. A pouch is a component of a pouch-type battery cell, and may be a configuration in which stacked cells or folded cells are inserted during the packaging process.

[0291] At P530, the secondary battery manufacturing system 1000 can match the cell ID obtained at P510 with the holder ID obtained at P520.

[0292] Figures 24 to 28, described below, are flowcharts illustrating how to match at least two of the jelly roll ID, carrier ID, and CAN ID in each of the multiple sub-processes included in the secondary battery manufacturing process of the secondary battery manufacturing system 1000, using the example that the secondary battery manufacturing process is a CAN-type battery manufacturing process. However, this is merely an example for the sake of explanation, and the cell tracking method of this disclosure is not limited to the CAN-type battery manufacturing process but can also be applied to the pouch-type battery manufacturing process.

[0293] Figure 24 is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment.

[0294] Since the method shown in Figure 24 can be carried out using the secondary battery manufacturing system 1000 in Figure 2, the explanations that overlap with the above content can be omitted, and the explanation can be given using the configuration in Figure 2.

[0295] The embodiment shown in Figure 24 is only one embodiment, and the order of steps in the various embodiments of this disclosure may differ from that shown in Figure 24. Some steps shown in Figure 24 may be omitted, the order of steps may be changed, or steps may be merged.

[0296] Referring to Figure 24, at P610, the secondary battery manufacturing system 1000 may acquire a jelly roll ID corresponding to the jelly roll based on the first sub-process. For example, the first sub-process may be the P30 process in Figure 1 of the manufacturing process by the secondary battery manufacturing system 1000.

[0297] At P620, the secondary battery manufacturing system 1000 may acquire a carrier ID corresponding to a carrier based on a second sub-process. Here, the carrier may be configured to load a jelly roll having the jelly roll ID acquired at P610 in the second sub-process. For example, the second sub-process may be the P40 process in Figure 1 of the manufacturing process by the secondary battery manufacturing system 1000.

[0298] In P630, the secondary battery manufacturing system 1000 can match the jelly roll ID obtained in P610 and the carrier ID obtained in P620. The stage in P630 where the secondary battery manufacturing system 1000 matches the jelly roll ID and the carrier ID can be described more specifically through FIGS. 25 and 26 described later.

[0299] FIG. 25 is a flowchart for explaining a method of managing cell tracking data according to an exemplary embodiment. More specifically, FIG. 25 is a flowchart for explaining a method of managing cell tracking data by the secondary battery manufacturing system 1000 in the first sub-process described in FIG. 23.

[0300] Since the method of FIG. 25 can be performed by the secondary battery manufacturing system 1000 of FIG. 2, descriptions that overlap with the above-described content can be omitted, and can be described using the configuration of FIG. 2.

[0301] The embodiment shown in FIG. 25 is only one embodiment, and the order of steps according to various embodiments of the present disclosure may be different from that shown in FIG. 25, and some steps shown in FIG. 25 may be omitted, the order between steps may be changed, or steps may be merged.

[0302] Referring to FIG. 25, in P710, the secondary battery manufacturing system 1000 can identify the tray ID by sensing the code object of the tray on which the jelly roll is loaded. Here, the code object is a code image including information on the ID of the object to be sensed and identified by a code reader (e.g., matrix readers 111a, 111b, 111c, 111d, 111e, 111f, 111g, 111h, 111i, 111j, 111m, 111n), and can be implemented by at least one of a data matrix, a QR code, and a barcode.

[0303] In P720, the secondary battery manufacturing system 1000 can load the electrode lot ID and electrode count of the jelly rolls. Here, the electrode count can indicate the order in which the jelly rolls were manufactured in the winder equipment.

[0304] According to one embodiment, the secondary battery manufacturing system 1000 can load the electrode lot ID and electrode count of the jelly rolls, triggered by the tray ID identification of P710. For example, the secondary battery manufacturing system 1000 may load the positive electrode lot ID and positive electrode count from a server such as an MES. As another example, the secondary battery manufacturing system 1000 may load the negative electrode lot ID and negative electrode count from a server such as an MES.

[0305] In P730, the secondary battery manufacturing system 1000 can determine the tray coordinates of the jelly roll tray. According to one embodiment, the secondary battery manufacturing system 1000 can determine the tray coordinates of the jelly roll on the tray based on the operation of a pick-and-place machine that moves the jelly roll loaded onto the tray to a first carrier 115a in a first sub-process.

[0306] In P740, the secondary battery manufacturing system 1000 can generate a jelly roll ID corresponding to a jelly roll. Here, the jelly roll ID may be a virtual ID generated using data associated with the jelly roll.

[0307] According to one embodiment, the secondary battery manufacturing system 1000 may generate a jelly roll ID based on the tray ID identified at P710. According to one embodiment, in addition to the tray ID identified at P710, the secondary battery manufacturing system 1000 may generate a jelly roll ID based on at least one of the electrode lot ID loaded at P720, the electrode count, and the tray coordinates determined at P730.

[0308] In P750, the secondary battery manufacturing system 1000 can identify the first carrier ID by sensing the code object of the first carrier 115a on which the jelly roll is loaded.

[0309] At P760, the secondary battery manufacturing system 1000 can match the jelly roll ID generated at P740 with the first carrier ID identified at P750. According to one embodiment, the secondary battery manufacturing system 1000 can match the jelly roll ID and the first carrier ID by comparing the time at which the jelly roll was generated at P740 with the time at which the first carrier ID was identified at P750. For example, if the time difference between the time at which the jelly roll ID was generated and the time at which the carrier ID was identified is within a preset threshold time value, the generated jelly roll ID and the identified carrier ID can be matched with each other. On the other hand, if the time difference between the time at which the jelly roll ID was generated and the time at which the carrier ID was identified exceeds a preset threshold time value, the generated jelly roll ID can be matched with other carrier IDs whose time difference is within the threshold time value.

[0310] Figure 26 is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. More specifically, Figure 26 is a flowchart illustrating how the secondary battery manufacturing system 1000 manages cell tracking data in the second sub-process described in Figure 23.

[0311] Since the method shown in Figure 26 can be carried out using the secondary battery manufacturing system 1000 in Figure 2, the explanations that overlap with the above content can be omitted, and the explanation can be given using the configuration in Figure 2.

[0312] The embodiment shown in Figure 26 is only one embodiment, and the order of steps in the various embodiments of this disclosure may differ from that shown in Figure 26. Some steps shown in Figure 26 may be omitted, the order of steps may be changed, or steps may be merged.

[0313] Referring to Figure 26, at P810, the secondary battery manufacturing system 1000 can identify the first carrier ID by sensing the code object of the first carrier 115a. P810 described here may be a different stage from P750 in Figure 24. Specifically, while P750 in Figure 23 is the stage of identifying the first carrier ID in the first sub-process, P810 may be the stage of identifying the first carrier ID in the second sub-process.

[0314] In P820, the secondary battery manufacturing system 1000 can identify the second carrier ID by sensing the code object of the second carrier 115a.

[0315] At P830, the secondary battery manufacturing system 1000 can match the first carrier ID identified at P810 with the second carrier ID identified at P820. According to one embodiment, the secondary battery manufacturing system 1000 can match the first carrier ID and the second carrier ID by comparing the time at which the first carrier ID was identified at P810 with the time at which the second carrier ID was identified at P820. For example, if the time difference between the time at which the first carrier ID was identified and the time at which the second carrier ID was identified is within a preset threshold time value, the identified first carrier ID and the second carrier ID can be matched with each other. On the other hand, if the time difference between the time at which the first carrier ID was identified and the time at which the second carrier ID was identified exceeds a preset threshold time value, the identified first carrier ID can be matched with another second carrier ID whose time difference is within the threshold time value.

[0316] According to one embodiment, the secondary battery manufacturing system 1000 can store the matching between the jelly roll ID and the first carrier ID as shown at P760 in Figure 25. This allows the secondary battery manufacturing system 1000 to match the jelly roll ID based on the first sub-process with the carrier ID based on the second sub-process (e.g., the second carrier ID) via the first carrier ID, as shown at P630 in Figure 24.

[0317] Figure 27 is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment.

[0318] Since the method shown in Figure 27 can be carried out using the secondary battery manufacturing system 1000 in Figure 2, explanations that overlap with the above can be omitted, and the explanation can be given using the configuration in Figure 2.

[0319] The embodiment shown in Figure 27 is only one embodiment, and the order of steps in the various embodiments of this disclosure may differ from that shown in Figure 27. Some steps shown in Figure 27 may be omitted, the order of steps may be changed, or steps may be merged.

[0320] Referring to Figure 27, at P910, the secondary battery manufacturing system 1000 may acquire a jelly roll ID corresponding to the jelly roll based on the first sub-process. P910 may be the same stage as P610 in Figure 24.

[0321] At P920, the secondary battery manufacturing system 1000 may acquire a CAN ID corresponding to the cell case into which the jelly roll is inserted, based on a third sub-step. For example, the third sub-step may be step P50 in Figure 1 during the manufacturing process by the secondary battery manufacturing system 1000.

[0322] At P930, the secondary battery manufacturing system 1000 can match the jelly roll ID obtained at P910 with the CAN ID obtained at P920. The step at P930 in which the secondary battery manufacturing system 1000 matches the jelly roll ID and the CAN ID can be explained in more detail through Figure 28, which will be described later.

[0323] Figure 28 is a flowchart illustrating a method for managing cell tracking data according to an exemplary embodiment. More specifically, Figure 28 is a flowchart illustrating how the secondary battery manufacturing system 1000 manages cell tracking data in the third sub-process described in Figure 27.

[0324] Since the method shown in Figure 28 can be carried out using the secondary battery manufacturing system 1000 in Figure 2, the explanations that overlap with the above content can be omitted, and the explanation can be given using the configuration in Figure 2.

[0325] The embodiment shown in Figure 28 is only one embodiment, and the order of steps in the various embodiments of this disclosure may differ from that shown in Figure 28. Some steps shown in Figure 28 may be omitted, the order of steps may be changed, or steps may be merged.

[0326] Referring to Figure 28, at P1010, the secondary battery manufacturing system 1000 can identify the second carrier ID by sensing the code object of the second carrier 115b. P1010 described here may be a different stage from P830 in Figure 26. Specifically, while P830 in Figure 26 is the stage of identifying the second carrier ID in the second sub-process, P1010 may be the stage of identifying the second carrier ID in the third sub-process.

[0327] In P1020, the secondary battery manufacturing system 1000 can identify the CAN ID by sensing the code object of the cell case into which the jelly roll is inserted.

[0328] At P1030, the secondary battery manufacturing system 1000 can match the second carrier ID identified at P1010 with the second CAN ID identified at P1020. According to one embodiment, the secondary battery manufacturing system 1000 can match the second carrier ID and the CAN ID by comparing the time at which the second carrier ID was identified at P1010 with the time at which the CAN ID was identified at P1020. For example, if the time difference between the time at which the second carrier ID was identified and the time at which the CAN ID was identified is within a preset threshold time value, the identified second carrier ID and the identified CAN ID can be matched with each other. On the other hand, if the time difference between the time at which the second carrier ID was identified and the time at which the CAN ID was identified exceeds a preset threshold time value, the identified second carrier ID can be matched with another CAN ID whose time difference is within the threshold time value.

[0329] According to one embodiment, the secondary battery manufacturing system 1000 can store the matching between the jelly roll ID and the first carrier ID as shown at P760 in Figure 25, and the matching between the first carrier ID and the second carrier ID as shown at P830 in Figure 26. This allows the secondary battery manufacturing system 1000 to match the jelly roll ID based on the first sub-process with the CAN ID based on the third sub-process via the second carrier ID, as shown at P930 in Figure 27.

[0330] The present disclosure has been described in more detail above through the drawings and embodiments. However, the configurations described in the drawings or embodiments described herein represent only one embodiment of the present disclosure and do not represent the entire technical concept of the present disclosure. It should be understood that, at the time of filing, there may be various equivalents and variations that can substitute for them. [Explanation of Symbols]

[0331] 11 Unwinder 13 Unwinder 15 Unwinder 17 Unwinder 19 Rewinder 20 trays 111a Data Matrix Reader 111b Data Matrix Reader 111c Data Matrix Reader 111d Data Matrix Reader 111e Data Matrix Reader 111f Data Matrix Reader 111g Data Matrix Reader 111h Data Matrix Reader 111i Data Matrix Reader 111j Data Matrix Reader 111m Data Matrix Leader 111n Data Matrix Reader

Claims

1. The stage of obtaining a cell ID corresponding to a semi-finished cell, The steps include obtaining a holder ID corresponding to the holder in which the aforementioned semi-finished cell is placed, A cell tracking method comprising the step of matching the cell ID and the holder ID.

2. The cell tracking method according to claim 1, wherein the cell ID is a virtual ID generated using data related to the semi-finished cell.

3. The aforementioned semi-finished cell is a jelly roll in which a positive electrode, a negative electrode, and a separation membrane are interposed and wound together. The cell tracking method according to claim 1, wherein the step of obtaining the cell ID includes a step of generating a jelly roll ID corresponding to the jelly roll based on a first sub-step included in the secondary battery manufacturing process.

4. The first sub-step is the step of loading the jelly rolls placed on the tray into the first carrier, The step of generating the aforementioned jelly roll ID is: The step of identifying the tray ID by sensing the code object in the aforementioned tray, The cell tracking method according to claim 3, comprising the step of generating the jelly roll ID based on the tray ID.

5. The step of generating the aforementioned jelly roll ID is: Based on the identification of the tray ID, the step of loading the electrode lot ID and electrode count of the jelly roll, The steps include determining the tray coordinates of the tray of the jelly roll, The cell tracking method according to claim 4, further comprising the step of generating the jelly roll ID based on the electrode lot ID, the electrode count, and the tray coordinates.

6. A step of obtaining a roll map of the semi-finished cell based on the electrode manufacturing process included in the secondary battery manufacturing process, The cell tracking method according to claim 1, further comprising the step of matching the role map and the cell ID.

7. The holder is a carrier in which the semi-finished cells are placed during the secondary battery manufacturing process. The cell tracking method according to claim 1, wherein the step of acquiring the holder ID includes the step of acquiring a carrier ID corresponding to the carrier based on a second sub-step included in the secondary battery manufacturing process.

8. The second sub-step is a step of loading the semi-finished cell onto a second carrier and coupling the semi-finished cell loaded onto the second carrier with the lower insulator. The step of obtaining the carrier ID includes the step of identifying the second carrier ID by sensing the code object of the second carrier, The cell tracking method according to claim 7, wherein the step of matching the cell ID and the holder ID includes the step of matching the cell ID and the second carrier ID.

9. Based on the first sub-step included in the secondary battery manufacturing process, the process further includes matching a first carrier ID corresponding to a first carrier on which the semi-finished cell is loaded with the cell ID, The step of matching the cell ID and the second carrier ID includes the step of matching the first carrier ID and the second carrier ID, The cell tracking method according to claim 8, characterized in that the first sub-step is performed before the second sub-step is performed.

10. The process further includes identifying the first carrier ID by sensing the code object of the first carrier based on the second sub-step, The cell tracking method according to claim 9, wherein the step of matching the first carrier ID and the second carrier ID includes matching the first carrier ID and the second carrier ID based on a first time in which the first carrier ID was identified based on the second sub-step and a second time in which the second carrier ID was identified based on the second sub-step.

11. A step of obtaining process data corresponding to the second sub-process targeting the semi-finished cell, The cell tracking method according to claim 8, further comprising the step of mapping the carrier ID and the process data.

12. The holder is a cell case or pouch into which the semi-finished cell is inserted during a third sub-process included in the secondary battery manufacturing process. The cell tracking method according to any one of claims 1 to 11, wherein the step of obtaining the holder ID includes, based on the third sub-step, the step of sensing a code object on the cell case or pouch.

13. The cell tracking method according to claim 12, wherein the step of obtaining the holder ID includes the step of identifying the CAN ID corresponding to the cell case by sensing the code object of the cell case.

14. Based on the second sub-step included in the secondary battery manufacturing process, the process further includes matching the second carrier ID corresponding to the second carrier on which the semi-finished cell is loaded with the cell ID, The step of matching the cell ID and the CAN ID includes the step of matching the second carrier ID and the CAN ID, The cell tracking method according to claim 13, characterized in that the second sub-step is performed before the third sub-step is performed.

15. The process further includes identifying the second carrier ID by sensing the code object of the second carrier based on the third sub-step, The cell tracking method according to claim 14, wherein the step of matching the second carrier ID and the CAN ID includes matching the second carrier ID and the CAN ID based on a third time in which the second carrier ID was identified based on the third sub-step and a fourth time in which the CAN ID was identified based on the third sub-step.

16. A step of obtaining process data corresponding to the third sub-process targeting the semi-finished cell, The cell tracking method according to claim 12, further comprising the step of mapping the holder ID and the process data.

17. Multiple sub-equipment facilities that perform multiple sub-processes included in the secondary battery manufacturing process, Includes at least one controller operationally connected to the plurality of sub-equipment, The aforementioned at least one controller is Obtain the cell ID corresponding to the semi-finished cell, Obtain the holder ID corresponding to the holder in which the aforementioned semi-finished cell is placed, A secondary battery manufacturing system configured to match the cell ID and the holder ID.

18. The secondary battery manufacturing system according to claim 17, wherein the cell ID is a virtual ID generated using data related to the semi-finished cell.

19. The aforementioned semi-finished cell is a jelly roll in which a positive electrode, a negative electrode, and a separation membrane are interposed and wound together. The plurality of sub-equipment includes a first sub-equipment that performs a first sub-process during the plurality of sub-processes, The aforementioned at least one controller is The secondary battery manufacturing system according to claim 17, configured to generate a jelly roll ID corresponding to the jelly roll based on data obtained from the first sub-equipment.

20. The first sub-step is the step of loading the jelly rolls placed on the tray into the first carrier, The first sub-device identifies the tray ID by sensing the code object in the tray. The secondary battery manufacturing system according to claim 19, wherein the at least one controller is configured to generate the jelly roll ID based on the tray ID.

21. The first sub-equipment described above is, Based on the identification of the tray ID, the electrode lot ID and electrode count of the jelly roll are loaded. Determine the tray coordinates of the tray of the jelly roll, The secondary battery manufacturing system according to claim 20, wherein the at least one controller is configured to generate the jelly roll ID based further on the electrode lot ID, the electrode count, and the tray coordinates.

22. The holder is a carrier in which the semi-finished cells are placed during the secondary battery manufacturing process. The plurality of sub-equipment includes a second sub-equipment that performs a second sub-process during the plurality of sub-processes, The secondary battery manufacturing system according to claim 17, wherein the second sub-equipment is configured to acquire a carrier ID corresponding to the carrier.

23. The second sub-step is a step of loading the semi-finished cell onto a second carrier and coupling the semi-finished cell loaded onto the second carrier with the lower insulator. The second sub-device identifies the second carrier ID by sensing the code object of the second carrier. The secondary battery manufacturing system according to claim 22, wherein the at least one controller is configured to match the cell ID and the second carrier ID.

24. The plurality of sub-equipment includes a first sub-equipment that performs a first sub-process during the plurality of sub-processes, The first sub-equipment identifies the first carrier ID by sensing the code object of the first carrier on which the semi-finished cell is loaded. The aforementioned at least one controller is The cell ID and the first carrier ID are matched, The system is configured to match the cell ID and the second carrier ID by matching the first carrier ID and the second carrier ID, The secondary battery manufacturing system according to claim 23, characterized in that the first sub-step is performed before the second sub-step is performed.

25. The second sub-device identifies the first carrier ID by sensing the code object of the first carrier. The secondary battery manufacturing system according to claim 24, wherein the at least one controller is configured to match the first carrier ID and the second carrier ID based on a first time when the first carrier ID is identified by the second sub-equipment and a second time when the second carrier ID is identified by the second sub-equipment.

26. The aforementioned at least one controller is From the second sub-equipment, process data corresponding to the second sub-process targeting the semi-finished cell is obtained, The secondary battery manufacturing system according to claim 22, configured to map the carrier ID and the process data.

27. The holder is a cell case or pouch into which the semi-finished cell is inserted during a third sub-process included in the secondary battery manufacturing process. The plurality of sub-equipment includes a third sub-equipment that performs the third sub-process, The secondary battery manufacturing system according to any one of claims 17 to 26, wherein the third sub-equipment is configured to identify the holder ID by sensing the code object of the cell case or the pouch.

28. The secondary battery manufacturing system according to claim 27, wherein the third sub-device is configured to identify the CAN ID corresponding to the cell case by sensing the code object of the cell case.

29. The plurality of sub-equipment includes a second sub-equipment that performs a second sub-process during the plurality of sub-processes, The aforementioned at least one controller is The second carrier ID corresponding to the second carrier on which the semi-finished cell is loaded is matched with the cell ID. The system is configured to match the cell ID and the CAN ID by matching the second carrier ID and the CAN ID. The secondary battery manufacturing system according to claim 28, characterized in that the second sub-step is performed before the third sub-step is performed.

30. The third sub-device identifies the second carrier ID by sensing the code object of the second carrier. The secondary battery manufacturing system according to claim 29, wherein the at least one controller is configured to match the second carrier ID and the CAN ID based on a third time when the third sub-equipment identifies the second carrier ID and a fourth time when the third sub-equipment identifies the CAN ID.

31. The aforementioned at least one controller is From the third sub-equipment, process data corresponding to the third sub-process targeting the semi-finished cell is obtained, The secondary battery manufacturing system according to claim 27, configured to map the holder ID and the process data.

32. The aforementioned at least one controller is A first controller is operationally connected to a first sub-equipment group, which is a group of a first number of sub-equipment units from among the plurality of sub-equipment units. The secondary battery manufacturing system according to claim 17, further comprising a second controller operationally connected to a second sub-equipment group, which is a group of a second number of sub-equipment from the plurality of sub-equipment.

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