Secondary battery manufacturing system and cell tracking method thereof

Abstract

A cell tracking method according to one embodiment of the present disclosure may comprise the steps of: acquiring, on the basis of a first sub-process included in a secondary battery manufacturing process, an electrode ID corresponding to a unit electrode; acquiring, on the basis of a second sub-process included in the secondary battery manufacturing process, a cell ID corresponding to a semi-finished cell including the unit electrode; and matching the electrode ID and the cell ID.

Description

Secondary battery manufacturing system and its cell tracking method

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0196337 filed December 24, 2024 and U.S. Patent Application No. 10-2025-0051590 filed April 21, 2025, and all contents disclosed in the documents of said Korean patent applications are incorporated herein as part of this specification.

[0002] The embodiments disclosed in this document relate to a secondary battery manufacturing system and a cell tracking method thereof.

[0003] Recently, active research and development on secondary batteries has been underway. Here, secondary batteries refer to rechargeable batteries, encompassing conventional Ni / Cd and Ni / MH batteries as well as the more recent lithium-ion batteries. Among secondary batteries, lithium-ion batteries have the advantage of significantly higher energy density compared to conventional Ni / Cd and Ni / MH batteries. Furthermore, lithium-ion batteries can be manufactured in a compact and lightweight form factor, making them suitable for use as power sources for mobile devices. Recently, their scope of application has expanded to include electric vehicles, drawing attention as a next-generation energy storage medium.

[0004] Secondary batteries are manufactured through electrode, assembly, and activation processes. To improve the yield and reliability of the secondary battery manufacturing process, ensuring process traceability is crucial. Accordingly, various studies are being conducted to ensure the traceability of the secondary battery manufacturing process.

[0005] According to one embodiment of the present disclosure, a secondary battery manufacturing system and a cell tracking method thereof can be provided to improve cell traceability through ID matching and process data matching between each sub-process.

[0006] According to one embodiment of the present disclosure, a secondary battery manufacturing system and a cell tracking method thereof can be provided, which clarify the target range of defective cells through ID matching and inspection data matching between each sub-process.

[0007] The technical problems to be solved by the embodiments of the present disclosure are not limited to the technical problems described above, and other technical problems can be inferred from the following embodiments.

[0008] A cell tracking method according to one embodiment of the present disclosure may include the step of obtaining an electrode ID corresponding to a unit electrode based on a first sub-process included in a secondary battery manufacturing process, the step of obtaining a cell ID corresponding to a semi-finished cell including the unit electrode based on a second sub-process included in the secondary battery manufacturing process, and the step of matching the electrode ID and the cell ID.

[0009] In a cell tracking method according to one embodiment of the present disclosure, the first sub-process is a notching process for forming an electrode tab on an electrode sheet, and the step of obtaining the electrode ID may include the step of obtaining the electrode ID by detecting a first code object formed on the electrode tab during the first sub-process.

[0010] In a cell tracking method according to one embodiment of the present disclosure, the first sub-process may further include the step of marking the first code object on the electrode tab.

[0011] In a cell tracking method according to one embodiment of the present disclosure, the second sub-process is a lamination process for forming the semi-finished cell by bonding the unit electrode having an electrode tab formed thereon and the separator, and the semi-finished cell is a unit cell composed of the unit electrode and the separator, and the step of obtaining the cell ID may include the step of obtaining the cell ID by detecting a first code object formed on the electrode tab during the second sub-process.

[0012] In a cell tracking method according to one embodiment of the present disclosure, the second sub-process is a stacking process for forming the semi-finished cell by stacking a plurality of unit cells, each unit cell comprising the unit electrode and the separator, and the semi-finished cell is a stacked electrode assembly formed by stacking the plurality of unit cells, and the step of obtaining the cell ID may include the step of obtaining the cell ID by detecting a second code object formed on the stacked electrode assembly during the second sub-process.

[0013] In a cell tracking method according to one embodiment of the present disclosure, the method further comprises the step of obtaining a plurality of unit cell IDs corresponding one-to-one to each of the plurality of unit cells during the second sub-process, and the step of matching the electrode ID and the cell ID may include the step of matching the plurality of unit cell IDs and the cell ID.

[0014] In a cell tracking method according to one embodiment of the present disclosure, the second code object may be formed on the electrode tab of the outermost unit cell among the plurality of unit cells included in the stacked electrode assembly.

[0015] In a cell tracking method according to one embodiment of the present disclosure, the second code object may be formed on a bonding tape for bonding the plurality of unit cells included in the stacked electrode assembly.

[0016] A cell tracking method according to one embodiment of the present disclosure may further include the step of marking the second code object on the bonding tape during the second sub-process.

[0017] In a cell tracking method according to one embodiment of the present disclosure, the second sub-process is a stacking process for forming the semi-finished cell by cross-arranging and stacking the unit electrode and the separator, and the semi-finished cell is a stacked electrode assembly formed by cross-arranging and stacking the unit electrode and the separator, and the step of obtaining the cell ID may include the step of obtaining the cell ID by detecting a second code object formed on the stacked electrode assembly during the second sub-process.

[0018] In a cell tracking method according to one embodiment of the present disclosure, the second sub-process is a folding process for forming the semi-finished cell by folding a plurality of unit cells comprising a unit cell composed of the unit electrode and a separator, and the semi-finished cell is a folding type electrode assembly formed by folding the plurality of unit cells, and the step of obtaining the cell ID may include the step of obtaining the cell ID by detecting a third code object formed on the folding type electrode assembly during the second sub-process.

[0019] In a cell tracking method according to one embodiment of the present disclosure, the third code object may be formed on the electrode tab of the outermost unit cell among the plurality of unit cells included in the folding electrode assembly.

[0020] In a cell tracking method according to one embodiment of the present disclosure, the second sub-process is a packaging process for forming a battery cell by packaging an electrode assembly including the unit electrode into a cell case, the semi-finished cell is the battery cell, and the step of obtaining the cell ID may include the step of obtaining the cell ID by detecting a fourth code object formed on the battery cell during the second sub-process.

[0021] A cell tracking method according to one embodiment of the present disclosure further comprises the step of obtaining an electrode assembly ID corresponding to the electrode assembly during the second sub-process, and the step of matching the electrode ID and the cell ID may include the step of matching the electrode assembly ID and the cell ID.

[0022] In a cell tracking method according to one embodiment of the present disclosure, the fourth code object may be formed on the lead of the battery cell or on the cell case.

[0023] A cell tracking method according to one embodiment of the present disclosure may further include the step of marking the fourth code object on the lead or the cell case during the second sub-process.

[0024] A cell tracking method according to one embodiment of the present disclosure may include the steps of: obtaining a roll map of an electrode sheet including a unit electrode based on an electrode manufacturing process included in the secondary battery manufacturing process; calculating position coordinates of the unit electrode on the roll map based on the electrode ID; and matching the electrode ID with the position coordinates on the roll map.

[0025] A cell tracking method according to one embodiment of the present disclosure may further include the step of acquiring at least one of first process data and first inspection data corresponding to the first sub-process targeting the unit electrode based on the first sub-process, and the step of mapping at least one of the first process data and the first inspection data to at least one of the electrode ID and the cell ID.

[0026] In a cell tracking method according to one embodiment of the present disclosure, the first process data includes at least one of information related to the equipment that performed the first sub-process on the unit electrode and the time during which the first sub-process was performed, and the first inspection data may include at least one of measurement information obtained by measuring the dimensions related to the unit electrode by a scanning method, a vision image obtained by capturing the appearance of the unit electrode, and state information of the unit electrode inspected based on at least one of the measurement information and the vision image.

[0027] A cell tracking method according to one embodiment of the present disclosure may further include the step of obtaining a second cell ID corresponding to a second semi-finished cell including the semi-finished cell based on a third sub-process included in the secondary battery manufacturing process, and the step of matching the second cell ID with at least one of the electrode ID and the cell ID.

[0028] A cell tracking method according to one embodiment of the present disclosure may further include the steps of: acquiring at least one of a first process data and a first inspection data based on the first sub-process; acquiring at least one of a second process data and a second inspection data based on the second sub-process; and, after acquiring the second cell ID, mapping at least one of the first process data and the first inspection data and at least one of the second process data and the second inspection data to the second cell ID.

[0029] A secondary battery manufacturing system according to one embodiment of the present disclosure includes a first sub-equipment for performing a first sub-process included in a secondary battery manufacturing process, a second sub-equipment for performing a second sub-process included in the secondary battery manufacturing process, and a controller for processing cell tracking data obtained from the first sub-equipment and the second sub-equipment, wherein the controller may be configured to obtain an electrode ID corresponding to a unit electrode from the first sub-equipment, obtain a cell ID corresponding to a semi-finished cell including the unit electrode from the second sub-equipment, and match the electrode ID and the cell ID.

[0030] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the first sub-process is a notching process for forming an electrode tab on an electrode sheet, the second sub-process is a lamination process for forming a semi-finished cell by bonding the unit electrode having the electrode tab formed thereon and a separator, the semi-finished cell is a unit cell composed of the unit electrode and the separator, the first sub-equipment is configured to obtain the electrode ID by detecting a first code object formed on the electrode tab during the first sub-process, and the second sub-equipment may be configured to obtain the cell ID by detecting the first code object formed on the electrode tab during the second sub-process.

[0031] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the second sub-process is a stacking process or a folding process for forming the semi-finished cell by stacking or folding a plurality of unit cells comprising a unit cell composed of the unit electrode and a separator, the semi-finished cell is an electrode assembly formed by stacking or folding the plurality of unit cells, and the second sub-equipment may be configured to obtain the cell ID by detecting a second code object formed on the electrode assembly during the second sub-process.

[0032] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the second sub-process is a stacking process for forming the semi-finished cell by cross-arranging and stacking the unit electrode and the separator, the semi-finished cell is a stacked electrode assembly formed by cross-arranging and stacking the unit electrode and the separator, and the second sub-equipment may be configured to obtain the cell ID by detecting a second code object formed on the stacked electrode assembly during the second sub-process.

[0033] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the second sub-process is a packaging process for forming a battery cell by packaging an electrode assembly including the unit electrode into a cell case, the semi-finished cell is the battery cell, and the second sub-equipment may be configured to obtain the cell ID by detecting a fourth code object formed on the battery cell during the second sub-process.

[0034] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the controller acquires at least one of a first process data and a first inspection data from the first sub-facility and can map at least one of the first process data and the first inspection data to at least one of the electrode ID and the cell ID.

[0035] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the first process data includes at least one of information related to the first sub-equipment that performed the first sub-process on the unit electrode and the time during which the first sub-equipment performed the first sub-process, and the first inspection data may include at least one of measurement information obtained by measuring the dimensions related to the unit electrode by a scanning method, a vision image obtained by capturing the appearance of the unit electrode, and state information of the unit electrode inspected based on at least one of the measurement information and the vision image.

[0036] A secondary battery manufacturing system according to one embodiment of the present disclosure further includes a third sub-facility for performing a third sub-process included in the secondary battery manufacturing process, and the controller obtains a second cell ID corresponding to a second semi-product cell including the semi-product cell from the third sub-facility, and can match the second cell ID with at least one of the electrode ID and the cell ID.

[0037] In a secondary battery manufacturing system according to one embodiment of the present disclosure, the controller may obtain at least one of a first process data and a first inspection data from the first sub-equipment, obtain at least one of a second process data and a second inspection data from the second sub-equipment, and after obtaining the second cell ID, map at least one of the first process data and the first inspection data and at least one of the second process data and the second inspection data to the second cell ID.

[0038] According to the embodiments disclosed in this document, the manufacturing traceability of a secondary battery can be improved.

[0039] The effects of the invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description in the claims.

[0040] FIG. 1 is a block diagram of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0041] FIG. 2 is a diagram illustrating an example in which a secondary battery manufacturing system according to one embodiment of the present disclosure obtains an electrode ID corresponding to a unit electrode based on a notching process.

[0042] FIG. 3 is a diagram illustrating an example in which a secondary battery manufacturing system according to one embodiment of the present disclosure obtains a cell ID corresponding to a semi-finished cell based on a lamination process.

[0043] FIG. 4 is a diagram illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a stacking process.

[0044] FIG. 5 is a diagram illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a folding process.

[0045] FIG. 6 is a diagram illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a packaging process for a stacked electrode assembly.

[0046] FIG. 7 is a drawing illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a packaging process for a folding electrode assembly.

[0047] FIG. 8 is a block diagram of a secondary battery manufacturing system for explaining a cell tracking method according to one embodiment of the present disclosure.

[0048] FIG. 9 is a block diagram of a secondary battery manufacturing system for explaining a cell tracking method according to one embodiment of the present disclosure.

[0049] FIG. 10 is a diagram illustrating a method for managing data obtained in each process of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0050] Figure 11 is a diagram showing the roll map data illustrated in Figure 10.

[0051] FIG. 12 is an operation flowchart of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0052] FIG. 13 is an operation flowchart of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0053] FIG. 14 is an operation flowchart of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0054] FIG. 15 is an operation flowchart of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0055] FIG. 16 is an operation flowchart of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0056] FIG. 17 is an operation flowchart of a secondary battery manufacturing system according to one embodiment of the present disclosure.

[0057] In describing the embodiments, technical details that are well known in the technical field to which this disclosure belongs and are not directly related to this disclosure are omitted. This is intended to convey the essence of this disclosure more clearly without obscuring it by omitting unnecessary explanations.

[0058] For the same reason, some components in the attached drawings have been exaggerated, omitted, or schematically depicted. Additionally, the size of each component does not entirely reflect its actual dimensions. Identical or corresponding components in each drawing have been assigned the same reference numbers.

[0059] The advantages and features of the present disclosure and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below but may be implemented in various different forms. The embodiments provided are merely to ensure that the disclosure is complete and to fully inform those skilled in the art of the scope of the invention, and the present disclosure is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0060] At this time, it will be understood that each block of the process flow diagrams and combinations of the flow diagrams can be executed by computer program instructions. Since these computer program instructions can be loaded into the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, the instructions executed through the processor of the computer or other programmable data processing equipment create means for performing the functions described in the flow diagram block(s). Since these computer program instructions can also be stored in computer-available or computer-readable memory that can be directed toward the computer or other programmable data processing equipment to implement functions in a specific way, the instructions stored in such computer-available or computer-readable memory can also produce a manufactured item containing means of instruction for performing the functions described in the flow diagram block(s). Since computer program instructions can also be loaded onto a computer or other programmable data processing equipment, the instructions that execute the computer or other programmable data processing equipment by creating a process that is executed by a computer through a series of operation steps performed on the computer or other programmable data processing equipment can also provide steps for executing the functions described in the flow diagram block(s).

[0061] Additionally, each block may represent a module, segment, or part of code containing one or more executable instructions for executing a specific logical function(s). It should also be noted that in some alternative execution examples, the functions mentioned in the blocks may occur out of order. For instance, two blocks described in succession may actually be executed substantially simultaneously, or the blocks may be executed in reverse order according to their corresponding functions.

[0062] In this embodiment, the term "part" refers to a software or hardware component, such as an FPGA or ASIC, and the "part" performs certain roles. However, the meaning of "part" is not limited to software or hardware. The "part" may be configured to reside in an addressable storage medium or configured to operate one or more processors. Thus, for example, the "part" includes components such as software components, object-oriented software components, class components, and task components, as well as processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functions provided within the components and "parts" may be combined into a smaller number of components and "parts" or further separated into additional components and "parts." Furthermore, the components and "parts" may be implemented to operate one or more CPUs within a device or secure multimedia card.

[0063] The expression “at least one of a, b, and c” described throughout the specification may include ‘a alone’, ‘b alone’, ‘c alone’, ‘a and b’, ‘a and c’, ‘b and c’, or ‘a, b, and c all’.

[0064] Embodiments of the present disclosure are described below with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein.

[0065] FIG. 1 is a block diagram of a secondary battery manufacturing system (100) according to one embodiment of the present disclosure.

[0066] Referring to FIG. 1, a secondary battery manufacturing system (100) may include a first sub-equipment (110a) for performing a first sub-process included in the secondary battery manufacturing process, a second sub-equipment (110b) for performing a second sub-process included in the secondary battery manufacturing process, and a controller (120).

[0067] A secondary battery manufacturing system (100) may be configured to perform a secondary battery manufacturing process. Here, the secondary battery manufacturing process may include an electrode manufacturing process, an assembly process, and an activation process for the secondary battery. According to one embodiment, the secondary battery manufacturing system (100) may be configured to perform an assembly process for the secondary battery. For example, the secondary battery manufacturing system (100) may be configured to perform an assembly process for a cylindrical battery, a prismatic battery, or a pouch-type battery.

[0068] Battery cells included in secondary batteries can be broadly classified into jelly roll-based battery cells and stacking / folding-based battery cells depending on the configuration method of the electrode assembly. Jelly roll-based battery cells may include a cylindrical or elliptical electrode assembly formed by winding with a positive electrode, a negative electrode, and a separator interposed, and can be mainly applied to cylindrical batteries or some prismatic batteries. On the other hand, stacking / folding-based battery cells may include an electrode assembly formed by cutting the electrodes and separator into specific units and then stacking or folding them, and can be mainly applied to pouch-type batteries or some prismatic batteries.

[0069] Depending on the configuration of these electrode assemblies, the manufacturing process of secondary batteries may also be configured differently. For example, in the case of jelly roll-based batteries, the process proceeds in the order of electrode roll feeding, winding, can insertion, and welding, whereas in the case of stacking / folding-based batteries, the process may proceed in the order of electrode sheet cutting, stacking (or folding), and packaging. Accordingly, the shape and traceability unit of the semi-finished cell defined at each process stage may also vary depending on the configuration of the electrode assembly.

[0070] In the following, the secondary battery manufacturing process by the secondary battery manufacturing system (100) is described as an example of a stacking / folding-based battery manufacturing process. However, this is merely an example for convenience of explanation, and the cell tracking method of the present disclosure is not limited to a stacking / folding-based battery manufacturing process and can also be applied to a jelly roll-based battery manufacturing process.

[0071] According to one embodiment, a secondary battery manufacturing process may include a plurality of sub-processes, and each of the sub-facilities (110a, 110b) may be configured to perform one of the sub-processes (or two or more sub-processes). Although FIG. 1 is illustrated as having a secondary battery manufacturing system (100) including two sub-facilities (110a, 110b), the number of sub-facilities is for illustrative purposes only and is not limited thereto.

[0072] According to one embodiment, the secondary battery manufacturing process may include a first sub-process performed by a first sub-facility (110a) and a second sub-process performed by a second sub-facility (110b). Here, the second sub-process may be performed after the first sub-process is performed. According to one embodiment, the sub-facility (110a, 110b) may include at least one process device for performing a sub-process corresponding to each sub-facility on a semi-finished product on a process line.

[0073] According to one embodiment, the sub-equipment (110a, 110b) may further include at least one of a marking device for marking a code object on a semi-finished product on a process line and a reading device for detecting a code object formed on the semi-finished product to identify an ID. Here, the code object is an identification mark containing information about the ID of the semi-finished product and may be implemented as at least one of a string-based code including numbers and / or characters, a one-dimensional code (e.g., a barcode), or a two-dimensional code (e.g., a data matrix, a QR code). The code object may be formed physically on various semi-finished products and components including such semi-finished products described below. For example, the code object may be formed on the surface of a target based on at least one of laser etching, inkjet printing, or label attachment methods by a marking device described below. Here, laser etching and inkjet printing may each be methods for imprinting identification information in a thermal or non-contact manner.

[0074] These code objects and the IDs identified therefrom (e.g., electrode ID, cell ID) can be used for quality evaluation and tracking of manufacturing history for each product after the product is completed by the secondary battery manufacturing process. For example, at least some of the various code objects described below may be formed by being exposed externally on the semi-finished product so that they can be detected by a reading device even after the product is completed, thereby enabling identification, quality evaluation, and tracking of manufacturing history using the corresponding code objects even in the final product state. Additionally, each ID is linked with the controller (120) and managed in real time, and may be used to integrally store and analyze process conditions, inspection results, and abnormal history for each product.

[0075] Furthermore, although the present disclosure primarily describes code object and ID identification only with respect to the battery cell assembly process, code objects can likewise be formed on components of battery modules or battery packs containing battery cells, thereby enabling ID identification, quality control, and manufacturing history tracking at the module or pack level.

[0076] The sub-equipments (110a, 110b) may include a communication circuit that establishes a wired communication channel and / or a wireless communication channel between the sub-equipments (110a, 110b) and the controller (120), and transmits and receives data with the controller (120) through the established communication channel. Here, communication, i.e., the transmission and reception of data, may be performed via wired or wireless means. According to one embodiment, the sub-equipments (110a, 110b) may use the communication circuit to transmit cell tracking data to the controller (120), including at least one of an ID corresponding to a semi-finished product on a process line, process data, and inspection data.

[0077] The sub-facilities (110a, 110b) can obtain an ID corresponding to a semi-finished product based on multiple sub-processes.

[0078] According to one embodiment, the first sub-equipment (110a) can obtain an electrode ID corresponding to a unit electrode based on the first sub-process. Here, the unit electrode refers to a unit of electrodes composed of one electrode and one electrode tab, and the first sub-process may be a notching process for forming an electrode tab on an electrode sheet.

[0079] According to one embodiment, the second sub-facility (110b) can obtain a cell ID corresponding to a semi-finished cell including a unit electrode based on the second sub-process. Here, the semi-finished cell may be a semi-finished product manufactured by the second sub-process during the manufacturing process by the secondary battery manufacturing system (100). The second sub-process may be a lamination process, a stacking process, a folding process, or a packaging process described later.

[0080] According to one embodiment, if the second sub-process is a lamination process in which a unit electrode having an electrode tab formed thereon is bonded to a separator, the semi-finished cell may be a unit cell composed of at least one electrode of one polarity (e.g., a positive electrode and / or a negative electrode) and a separator. In this case, the unit cell may be composed of a mono cell in which a positive electrode and a negative electrode are respectively located on the outermost sides, a bi- cell in which electrodes of the same polarity are located on the outermost sides, or a half cell in which a positive electrode or a negative electrode is located between the separators on the outermost sides.

[0081] According to one embodiment, the second sub-process may be a stacking process. Here, the stacking process may be a general stacking process that stacks a plurality of unit cells, or a zigzag stacking (z-stacking) process that cross-arranges and stacks unit electrodes and separators. More specifically, the zigzag stacking process is a process of stacking a positive electrode and a negative electrode corresponding to a unit electrode and a separator while cross-arranging them in a certain order; for example, cross-arrangement may mean arranging them in the order of 'positive electrode - separator - negative electrode - separator - positive electrode'. According to this method, unit electrodes of the same polarity face each other at a certain distance, and a structure is formed in which a separator and an electrode of opposite polarity are interposed between them. When the second sub-process is a stacking process, the semi-finished cell may be a stacked electrode assembly formed by stacking a plurality of unit cells or by cross-arranging and stacking unit electrodes and separators.

[0082] According to one embodiment, if the second sub-process is a folding process that folds a plurality of unit cells, the semi-finished cell may be a folding type electrode assembly formed by folding a plurality of unit cells.

[0083] According to one embodiment, if the second sub-process is a packaging process for packaging a stacked electrode assembly or a folding electrode assembly into a cell case, the semi-finished cell may be a battery cell in which the electrode assembly is inserted into a cell case (metal case or pouch) (e.g., a prismatic battery cell or a pouch-type battery cell).

[0084] According to one embodiment, the secondary battery manufacturing system (100) may further include a third sub-facility (not shown) for performing a third sub-process included in the secondary battery manufacturing process. Here, the third sub-process may be performed after the second sub-process is performed. In this case, the second sub-process and the third sub-process may each be two processes among a lamination process, a stacking process, a folding process, and a packaging process. For example, if the second sub-process is a lamination process, the third sub-process may be a stacking process, a folding process, or a packaging process. As another example, if the second sub-process is a stacking process or a folding process, the third sub-process may be a packaging process.

[0085] Hereinafter, with reference to FIGS. 2 to 7, a method for a secondary battery manufacturing system (100) to obtain an ID of a semi-finished product based on a plurality of sub-processes included in a secondary battery manufacturing process is described. The plurality of sub-processes described in FIGS. 2 to 7 may be a notching process, a lamination process, a stacking process, a folding process, and a packaging process included in a stacking / folding-based battery assembly process. Specifically, FIG. 2 may be a notching process, FIG. 3 may be a lamination process, FIG. 4 may be a stacking process, FIG. 5 may be a folding process, and FIGS. 6 and 7 may be drawings for explaining a packaging process.

[0086] Each sub-process described in FIGS. 2 to 7 may be performed by at least one of the first sub-equipment (110a) and the second sub-equipment (110b) shown in FIG. 1. Specifically, the first sub-equipment (110a) may perform the notching process of FIG. 2, and the second sub-equipment (110b) may perform any one of the lamination process, stacking process, folding process, and packaging process of FIGS. 3 to 7.

[0087] FIG. 2 is a diagram illustrating an example in which a secondary battery manufacturing system according to one embodiment of the present disclosure obtains an electrode ID corresponding to a unit electrode based on a notching process.

[0088] Referring to FIG. 2, the first sub-equipment (110a) can perform a notching process to form electrode tabs (220a, 220b, 220c) on an electrode sheet (210). Here, the electrode sheet (210) may be an anode sheet or a cathode sheet.

[0089] According to one embodiment, the first sub-equipment (110a) may include a plurality of notching process devices for performing a notching process. The plurality of notching process devices may include a loading device, a notching device, and an unloading device. Here, the loading device may be configured to unwind an electrode sheet (210) from a roll-shaped electrode roll and load it into the notching device. The notching device may be configured to shear the electrode sheet (210) using a press or a laser to form electrode tabs (220a, 220b, 220c). The unloading device may be configured to wind the electrode sheet (210) with the electrode tabs (220a, 220b, 220c) formed thereon back into a roll shape.

[0090] According to one embodiment, the first sub-equipment (110a) may include a marking device (230) for marking code objects (240b, 240c) on electrode tabs (220a, 220b, 220c) during a notching process and a reading device (250) for detecting code objects (240b, 240c) formed on electrode tabs (220a, 220b, 220c). At this time, since the code objects (240b, 240c) must be marked after the electrode tabs (220a, 220b, 220c) are formed on the electrode sheet (210), the marking device (230) may be positioned after the notching device in the process direction on the notching process line. Additionally, to detect code objects (240b, 240c) formed by the marking device (230), the reading device (250) may be positioned after the marking device (230) in the process direction on the notching process line.

[0091] According to one embodiment, the electrode tabs (220a, 220b, 220c) on which code objects (240b, 240c) are formed may be positive tabs or negative tabs. According to one embodiment, the electrode tabs (220a, 220b, 220c) on which code objects (240b, 240c) are formed may be negative tabs so that tab damage is minimized during marking. Hereinafter, the technical concept of the present disclosure is explained focusing on an embodiment in which the electrode tabs (220a, 220b, 220c) on which code objects (240b, 240c) are formed during the notching process are negative tabs. However, this is for illustrative purposes only and does not limit the technical concept of the present disclosure in any sense.

[0092] According to one embodiment, the first sub-equipment (110a) can obtain an electrode ID corresponding to a unit electrode by detecting a code object (240c) formed on an electrode tab (220c) using a reading device (250).

[0093] According to one embodiment, the first sub-equipment (110a) may be configured to acquire notching process data and notching inspection data.

[0094] According to one embodiment, the notching process data may include at least one of the following: information related to the equipment that performed the notching process (e.g., tension information applied by each equipment to the electrode sheet (210), information on the number of times the notching device's mold is punched, winding information of the unloading device, etc.) and the time during which the electrode tab (220c) is formed on the electrode sheet (210) through the notching process.

[0095] According to one embodiment, the notching inspection data may include at least one of measurement information obtained by measuring the dimensions of the electrode sheet (210) and the electrode tab (220c) by a scanning method, a vision image obtained by capturing the appearance of the electrode sheet (210) and the electrode tab (220c) through a vision machine, and at least one of the state information of the electrode sheet (210) and the electrode tab (220c) inspected based on at least one of the measurement information and the vision image.

[0096] The measurement information may include the dimensions of the electrode sheet (210) and the electrode tab (220c) (e.g., thickness, width), the loading amount of the coating material on the electrode sheet (210), the dimensions of the insulating material provided on the coating material (e.g., thickness, width), the dimensions of the overlapping section between the coating material and the insulating material (e.g., thickness, width), and information on the mismatch between the coating lanes on the upper surface of the electrode sheet (210) and the coating lanes on the lower surface of the electrode sheet (210).

[0097] The status information may include the quality of the electrode sheet (210) and electrode tab (220c) determined based on at least one of the measurement information and the vision image. For example, the status information may include at least one of the quality determined based on the dimensions of the electrode sheet (210) and electrode tab (220c) included in the measurement information, and information on the types of defects of the electrode sheet (210) and electrode tab (220c) determined based on the vision image (e.g., pinhole defect, crater defect, line defect, crack defect, side ring defect, island defect, folding defect, wrinkle defect, gouging defect, dent defect, etc.).

[0098] According to one embodiment, the first sub-equipment (110a) may be configured to map an electrode ID corresponding to a unit electrode including an electrode tab (220c) to notching process data and / or notching inspection data. Here, mapping may mean storing an ID and data in conjunction so that data acting as a value can be referenced through an ID acting as a key. That is, by mapping the electrode ID to the notching process data and / or notching inspection data, the notching process data and / or notching inspection data can be referenced through the electrode ID. Accordingly, tracking of the notching process data and / or notching inspection data of the unit electrode including the electrode tab (220c) based on the electrode ID may be provided.

[0099] According to one embodiment, the first sub-equipment (110a) can transmit cell tracking data to the controller (120). Here, the cell tracking data may include an electrode ID corresponding to a unit electrode including an electrode tab (220c). In one embodiment, the cell tracking data may further include notching process data and / or notching inspection data of a notching process targeting a unit electrode including an electrode tab (220c). In this case, the cell tracking data may include information regarding the mapping between the electrode ID and the notching process data and / or notching inspection data.

[0100] According to one embodiment, the cell tracking data may include the time at which the electrode ID of a unit electrode including an electrode tab (220c) is acquired during the notching process. In one embodiment, the cell tracking data may further include the time at which the electrode ID of a unit electrode including an electrode tab (220c) is mapped to the notching process data and / or notching inspection data.

[0101] FIG. 3 is a diagram illustrating an example in which a secondary battery manufacturing system according to one embodiment of the present disclosure obtains a cell ID corresponding to a semi-finished cell based on a lamination process.

[0102] Referring to FIG. 3, the second sub-equipment (110b) can perform a lamination process in which an electrode sheet (310) with electrode tabs formed thereon is bonded to a separator and cut by unit electrode to form unit cells (320a, 320b, 320c). Here, the electrode sheet (310) introduced into the lamination process may be a roll-shaped electrode roll that has undergone the notching process of FIG. 2.

[0103] According to one embodiment, the second sub-equipment (110b) may include a plurality of lamination process devices for performing a lamination process. The plurality of lamination process devices may include a loading device, a laminating device, and a cutting device. Here, the loading device may be configured to unwind an electrode sheet (310) from a roll-shaped electrode roll that has undergone a notching process and load it into a laminating device. Additionally, the loading device may be configured to unwind a separator sheet from a separator roll as well as an electrode roll and load it into a laminating device. In this case, the loading device may be configured to load the electrode sheet (310) and the separator sheet into the laminating device according to the arrangement of the electrode and separator constituting the unit cell to be manufactured. The laminating device may be configured to bond the electrode sheet (310) and the separator sheet loaded from the loading device. The cutting device may be configured to cut the bonded electrode sheet (310) and the separator sheet to a specified size to form a plurality of unit cells (320a, 320b, 320c).

[0104] According to one embodiment, the second sub-equipment (110b) may include a reading device (330) for detecting a code object (350b) formed on an electrode tab (340b) during the lamination process. For example, the reading device (330) may be positioned after the cutting device in the direction of process progress on the lamination process line.

[0105] According to one embodiment, the second sub-equipment (110b) may be configured to obtain a cell ID (e.g., unit cell ID) corresponding to a unit cell (320b) by detecting a code object (350b) formed on an electrode tab (340b) using a reading device (330). The code object (350b) read by the reading device (330) may be marked by the marking device (230) during the notching process of FIG. 2. That is, assuming they are based on the same unit electrode, the electrode ID obtained during the notching process and the cell ID obtained during the lamination process may be the same.

[0106] According to one embodiment, the second sub-equipment (110b) may be configured to acquire lamination process data and lamination inspection data.

[0107] According to one embodiment, the lamination process data may include at least one of the following: information related to the equipment that performed the lamination process (e.g., information on the electrode sheet (310) and separator that the loading device loads into the laminating device, information on the pressure applied by the laminating device when bonding the electrode sheet (310) and the separator sheet, information on the number of cuts by the cutting device, etc.) and the time during which the unit cell (320b) was formed through the lamination process.

[0108] According to one embodiment, the lamination inspection data may include at least one of measurement information obtained by measuring the dimensions of the unit cell (320b) by a scanning method, a vision image obtained by capturing the appearance of the unit cell (320b) through a vision machine, short-circuit information obtained by checking whether the unit cell (320b) is short-circuited, and state information of the unit cell (320b).

[0109] The status information may include the quality of the unit cell (320b) determined based on at least one of measurement information, a vision image, and short-circuit information. For example, the status information may include at least one of the quality determined based on the dimensions of the unit cell (320b) included in the measurement information, the quality determined based on whether there is an internal short circuit of the unit cell (320b) included in the short-circuit information, and information on the type of defect that occurred in the upper part, lower part, and electrode tab (340b) of the unit cell (320b) determined based on the vision image.

[0110] According to one embodiment, the second sub-equipment (110b) may be configured to map a cell ID corresponding to a unit cell (320b) to lamination process data and / or lamination inspection data. Accordingly, tracking of the lamination process data and / or lamination inspection data of the unit cell (320b) based on the cell ID may be provided.

[0111] According to one embodiment, the second sub-equipment (110b) can transmit cell tracking data to the controller (120). Here, the cell tracking data may include a cell ID corresponding to a unit cell (320b). In one embodiment, the cell tracking data may further include lamination process data and / or lamination inspection data of a lamination process targeting the unit cell (320b). In this case, the cell tracking data may include information regarding the mapping between the cell ID and the lamination process data and / or lamination inspection data.

[0112] According to one embodiment, the cell tracking data may include the time when the cell ID of the unit cell (320b) is acquired during the lamination process. In one embodiment, the cell tracking data may further include the time when the cell ID of the unit cell (320b) is mapped to the lamination process data and / or the lamination inspection data.

[0113] FIG. 4 is a diagram illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a stacking process.

[0114] Referring to FIG. 4, the second sub-equipment (110b) can perform a stacking process to form a stacked electrode assembly (440a, 440b) by taping a stack cell (430), formed by stacking a plurality of unit cells (401a, 401b, 401c, 401d, 401e, 402a, 402b, 402c, 402d, 402e), with a bonding tape (441a, 441b). Here, the plurality of unit cells (401a, 401b, 401c, 401d, 401e, 402a, 402b, 402c, 402d, 402e) introduced into the stacking process may be unit cells that have undergone the lamination process of FIG. 3. According to one embodiment, the second sub-equipment (110b) may include a plurality of stacking process devices for performing a stacking process. The plurality of stacking process devices may include a loading device, a stacking device, and a taping device.

[0115] Here, the loading device may be configured to load a plurality of unit cells (401a, 401b, 401c, 401d, 401e, 402a, 402b, 402c, 402d, 402e) to a stacking device. In one embodiment, the loading device may be configured to load a plurality of unit cells (401a, 401b, 401c, 401d, 401e, 402a, 402b, 402c, 402d, 402e) to a stacking device using two different process lines. For example, the loading device may be configured to load a plurality of unit cells (401a, 401b, 401c, 401d, 401e) on a first process line and a plurality of unit cells (402a, 402b, 402c, 402d, 402e) on a second process line into a stacking device. The plurality of unit cells (401a, 401b, 401c, 401d, 401e) on the first process line and the plurality of unit cells (402a, 402b, 402c, 402d, 402e) on the second process line may be different types of unit cells. For example, a plurality of unit cells (401a, 401b, 401c, 401d, 401e) on the first process line may be monocells in which an anode and a cathode are respectively located on both outermost sides, and a plurality of unit cells (402a, 402b, 402c, 402d, 402e) on the second process line may be halfcells in which an anode or a cathode is located between the separators on both outermost sides. In this case, the loading device may be configured to first load a first designated number (e.g., 29) of unit cells among a plurality of unit cells (401a, 401b, 401c, 401d, 401e) on a first process line into the stacking device, and then load a second designated number (e.g., 1) of unit cells among a plurality of unit cells (402a, 402b, 402c, 402d, 402e) on a second process line into the stacking device. Here, the sum of the first designated number and the second designated number may be the number of unit cells constituting the stack cell (430).However, this is for illustrative purposes only and does not limit the technical scope of the present disclosure. For example, a loading device may be configured to sequentially load a specified number of unit cells onto a stacking device on a single process line.

[0116] The stacking device may be configured to form a stack cell (430) by stacking the loaded unit cells when a required number of unit cells are loaded from the loading device into the stack cell (430). In this case, the top unit cell of the stack cell (430) may be a unit cell loaded from the second process line by the loading device.

[0117] The taping device may be configured to form a stacked electrode assembly (440a, 440b) by taping a stack cell (430) with bonding tape (441a, 441b).

[0118] According to one embodiment, the second sub-equipment (110b) may include at least one of a first reading device (410) and a second reading device (420) for detecting a code object (405e, 406e) formed on the electrode tabs (403e, 404e) of the unit cells (401e, 402e) during the stacking process.

[0119] The second sub-equipment (110b) may be configured to obtain the unit cell ID of each of the plurality of unit cells (401a, 401b, 401c, 401d, 401e, 402a, 402b, 402c, 402d, 402e) before stacking by using at least one of the first reading device (410) and the second reading device (420). According to one embodiment, the second sub-equipment (110b) may be configured to obtain the unit cell ID of the unit cells loaded from the first process line among the unit cells constituting the stack cell (430) using the first reading device (410), and to obtain the unit cell ID of the unit cell loaded from the second process line using the second reading device (420). Since the first reading device (410) and the second reading device (420) are configured to obtain the unit cell ID of the unit cell before the stacked electrode assembly (440a, 440b) is formed, they can be placed on the stacking process line before the stacking device. For example, the second sub-equipment (110b) can obtain the unit cell ID corresponding to the unit cell (401e) by detecting the code object (405e) formed on the electrode tab (403e) of the unit cell (401e) on the first process line using the first reading device (410), and obtain the unit cell ID corresponding to the unit cell (402e) by detecting the code object (406e) formed on the electrode tab (404e) of the unit cell (402e) on the second process line using the second reading device (420). At this time, the code objects (404e, 406e) read by the first reading device (410) and the second reading device (420) may be marked by the marking device (230) during the notching process of FIG. 2. That is, when based on the same unit electrode, the electrode ID obtained during the notching process, the unit cell ID obtained during the lamination process, and the unit cell ID obtained during the stacking process may all be the same.

[0120] According to one embodiment, the second sub-equipment (110b) may include a marking device (450) for marking code objects (445a, 445b) on bonding tapes (441a, 441b) during a stacking process and a third reading device (460) for detecting code objects (445a, 445b) formed on bonding tapes (441a, 441b). At this time, since the code objects (445a, 445b) must be marked after the bonding tapes (441a, 441b) are taped to the stacked electrode assembly (440a, 440b), the marking device (450) may be positioned after the taping device in the direction of process progress on the stacking process line. Additionally, to detect code objects (445a, 445b) formed by the marking device (450), the third reading device (460) may be positioned after the marking device (450) in the process direction on the stacking process line.

[0121] According to one embodiment, the second sub-equipment (110b) can obtain a cell ID (e.g., electrode assembly ID) corresponding to the stacked electrode assembly (440b) by using at least one of the third reading device (460) and the fourth reading device (470). For example, the second sub-equipment (110b) can obtain a cell ID corresponding to the stacked electrode assembly (440b) by using the third reading device (460) to detect a code object (445b) formed on the bonding tape (441b) of the stacked electrode assembly (440b). In this case, the cell ID may be based on the code object (445b) formed on the bonding tape (441b). As another example, the second sub-equipment (110b) can obtain a cell ID corresponding to the stacked electrode assembly (440b) by using the fourth reading device (470) to detect a code object (443b) formed on the electrode tab (442b) of the outermost unit cell among the plurality of unit cells included in the stacked electrode assembly (440b). In this case, the cell ID may be based on the code object (443b) formed on the electrode tab (442b) of the outermost unit cell among the plurality of unit cells included in the stacked electrode assembly (440b). Meanwhile, the code object (443a, 443b) detected by the fourth reading device (470) may be formed on the negative electrode tab (442a, 442b) of the outermost unit cell among the plurality of unit cells included in the stacked electrode assembly (440a, 440b). However, this is for illustrative purposes only and does not limit the technical concept of the present disclosure in any sense. For example, a code object detected by the fourth reading device (470) may be formed on the positive tab (444a, 444b) of the outermost unit cell among the plurality of unit cells included in the stacked electrode assembly (440a, 440b).

[0122] According to one embodiment, the second sub-equipment (110b) may be configured to match a plurality of unit cell IDs of each of a plurality of unit cells included in a stacked electrode assembly (440b) obtained using at least one of the first reading device (410) and the second reading device (420) with a cell ID corresponding to the stacked electrode assembly (440b) obtained using at least one of the third reading device (460) and the fourth reading device (470). For example, the second sub-equipment (110b) may be configured to load a count whenever the first reading device (410) and / or the second reading device (420) detect a code object, and to match a plurality of unit cell IDs obtained until a specified number of counts are loaded with a cell ID corresponding to the stacked electrode assembly (440b) obtained by the third reading device (460) and / or the fourth reading device (470) detecting a code object.

[0123] According to one embodiment, the second sub-equipment (110b) may be configured to acquire stacking process data and stacking inspection data.

[0124] According to one embodiment, the stacking process data may include at least one of the following: information related to the equipment that performed the stacking process (e.g., information on the number of process lines operated by the loading device, information on the number and order of unit cells loaded in each process line, information on the number of unit cells that the stacking device stacks to form a stack cell (430), specification information of the bonding tape used by the taping device, etc.) and the time at which the stacked electrode assembly (440b) was formed through the stacking process.

[0125] According to one embodiment, the stacking inspection data may include at least one of measurement information obtained by measuring the dimensions of a stacked electrode assembly (440b) and a plurality of unit cells included therein using a scanning method, a vision image obtained by capturing the appearance of the stacked electrode assembly (440b) and a plurality of unit cells included therein through a vision machine, short-circuit information obtained by inspecting whether the stacked electrode assembly (440b) is short-circuited, and state information of the stacked electrode assembly (440b) and a plurality of unit cells included therein.

[0126] The status information may include the quality of the stacked electrode assembly (440b) determined based on at least one of measurement information, a vision image, and short circuit information. For example, the status information may include at least one of the quality determined based on the dimensions of the stacked electrode assembly (440b) and a plurality of unit cells included therein included in the measurement information, the quality determined based on whether there is an internal short circuit of the stacked electrode assembly (440b) included in the short circuit information, and the alignment state and loading state of the plurality of unit cells determined based on the vision image, the weight of the stacked electrode assembly (440b), the top part, the bottom part, the side, and the type of defect that occurred on the electrode tabs (442b, 444b).

[0127] According to one embodiment, the second sub-equipment (110b) may be configured to map a cell ID corresponding to a stacked electrode assembly (440b) to stacking process data and / or stacking inspection data. Accordingly, tracking of the stacking process data and / or stacking inspection data of the stacked electrode assembly (440b) based on the cell ID may be provided.

[0128] According to one embodiment, the second sub-equipment (110b) can transmit cell tracking data to the controller (120). Here, the cell tracking data may include a cell ID corresponding to a stacked electrode assembly (440b). In one embodiment, the cell tracking data may further include stacking process data and / or stacking inspection data of a stacking process targeting the stacked electrode assembly (440b). In this case, the cell tracking data may include information regarding the mapping between the cell ID and the stacking process data and / or stacking inspection data.

[0129] According to one embodiment, the cell tracking data may include the time when the cell ID of the stacked electrode assembly (440b) is acquired during the stacking process. In one embodiment, the cell tracking data may further include the time when the cell ID of the stacked electrode assembly (440b) is mapped to the stacking process data and / or the stacking inspection data.

[0130] Meanwhile, FIG. 4 illustrates a general stacking process in which a plurality of unit cells (401a, 401b, 401c, 401d, 401e, 402a, 402b, 402c, 402d, 402e) are stacked to form a stack cell (430), but the stacking process of the present disclosure may be a zigzag stacking process in which unit electrodes and separators are cross-arranged and stacked to form a stack cell (430). When the second sub-equipment (110b) performs the zigzag stacking process, the lamination process described in FIG. 3 can be omitted from the assembly process because the stack cell (430) can be formed without forming a separate unit cell. In this case, a cutting process may be performed to cut a continuous electrode sheet with electrode tabs formed thereon into individual unit electrodes prior to the zigzag stacking process, and each unit electrode cut in the cutting process may be alternately stacked with a continuously arranged separator to form a stack cell (430). At this time, the cutting process may be performed considering the electrode tab position, shape, and code object of the unit electrode.

[0131] When the second sub-equipment (110b) performs a zigzag stacking process, it can obtain an electrode ID corresponding to each unit electrode based on a code object formed on the electrode tab of the unit electrode obtained in the cutting process. According to one embodiment, the second sub-equipment (110b) obtains an electrode ID corresponding to each unit electrode using at least one of the first reading device (410) and the second reading device (420) before stacking, and then, after the stacked electrode assembly (440a, 440b) is completed according to the zigzag stacking method, it can obtain a cell ID (e.g., electrode assembly ID) corresponding to the stacked electrode assembly (440a, 440b) using the third reading device (460) and / or the fourth reading device (470). The second sub-equipment (110b) may be configured to match a plurality of electrode IDs and cell IDs corresponding to a plurality of unit electrodes included in the stacked electrode assembly (440a, 440b).

[0132] FIG. 5 is a diagram illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a folding process.

[0133] Referring to FIG. 5, the second sub-equipment (110b) can perform a folding process to form a folding electrode assembly (530) by folding a plurality of unit cells (501a, 501b, 501c, 501d, 501e, 501f, 501g, 501h, 501i). Here, the plurality of unit cells (501a, 501b, 501c, 501d, 501e, 501f, 501g, 501h, 501i) introduced into the folding process may be unit cells that have undergone the lamination process of FIG. 3.

[0134] According to one embodiment, the second sub-equipment (110b) may include a plurality of folding process devices for performing a folding process. The plurality of folding process devices may include a loading device and a folding device.

[0135] Here, the loading device may be configured to load a plurality of unit cells (501a, 501b, 501c, 501d, 501e, 501f, 501g, 501h, 501i) into the folding device. In one embodiment, the loading device may be configured to load two types of unit cells into the folding device using a single process line. For example, the loading device may be configured to alternately load two Type C bicells (501a, 501b, 501e, 501f, 501i) with cathodes located on both outermost sides and two Type A bicells (501c, 501d, 501g, 501h) with anodes located on both outermost sides into the folding device. However, this is for illustrative purposes only and does not limit the technical scope of the present disclosure. For example, the loading device may be configured to sequentially load one type of unit cell into the folding device. The folding device may be configured to form a foldable electrode assembly (530) by folding a number of unit cells (501a, 501b, 501c, 501d, 501e, 501f, 501g, 501h, 501i) loaded from the loading device into a specified number.

[0136] According to one embodiment, the second sub-equipment (110b) may include at least one of a first reading device (510) and a second reading device (520) for detecting a code object (503d) formed on an electrode tab (502d) of a unit cell (501e) during a folding process.

[0137] The second sub-equipment (110b) may be configured to obtain the unit cell ID of each of the plurality of unit cells (501a, 501b, 501c, 501d, 501e, 501f, 501g, 501h, 501i) before folding using at least one of the first reading device (510) and the second reading device (520). The position of the code object formed on the electrode tab of the unit cell on the folding process line may differ depending on the type of unit cell. For example, in the case of C-type bicells (501a, 501b, 501e, 501f, 501i), the code object may be formed at the top of the electrode tab, and in the case of A-type bicells (501c, 501d, 501g, 501h), the code object may be formed at the bottom of the electrode tab. Accordingly, the first reading device (510) and the second reading device (520) may each be positioned to detect the top and bottom of the electrode tab. Specifically, the first reading device (510) may be positioned to detect the top of the electrode tab and configured to detect a code object (503d) formed on the top of the electrode tab (502d) of the C-type bicell (501e). The second reading device (520) may be positioned to detect the bottom of the electrode tab and configured to detect a code object (not shown) formed on the bottom of the electrode tab (502g) of the A-type bicell (501g).

[0138] At this time, the code object (503d) read by the first reading device (510) and the second reading device (520) may be marked by the marking device (230) during the notching process of FIG. 2. That is, when based on the same unit electrode, the electrode ID obtained during the notching process, the unit cell ID obtained during the lamination process, and the unit cell ID obtained during the folding process may all be the same.

[0139] Since the first reading device (510) and the second reading device (520) are configured to obtain the unit cell ID of the unit cell before the folding electrode assembly (530) is formed, they can be placed on the folding process line before the folding process device.

[0140] According to one embodiment, the sub-equipment (110b) may include a third reading device (540) for detecting a code object (532) formed on the electrode tab (531) of the outermost unit cell among the plurality of unit cells included in the folding electrode assembly (530) during the folding process. The sub-equipment (110b) may obtain a cell ID (e.g., electrode assembly ID) corresponding to the folding electrode assembly (530) by using the third reading device (540) to detect the code object (532) formed on the electrode tab (531) of the outermost unit cell among the plurality of unit cells included in the folding electrode assembly (530). In this case, the cell ID may be based on the code object (532) formed on the electrode tab (531) of the outermost unit cell among the plurality of unit cells included in the folding electrode assembly (530). Meanwhile, the code object (532) detected by the third reading device (540) may be formed on the negative tab (531) of the outermost unit cell among the plurality of unit cells included in the folding electrode assembly (530). However, this is for illustrative purposes only and does not limit the technical concept of the present disclosure in any sense. For example, the code object detected by the third reading device (540) may be formed on the positive tab (533) of the outermost unit cell among the plurality of unit cells included in the folding electrode assembly (530).

[0141] According to one embodiment, the second sub-equipment (110b) may be configured to match a plurality of unit cell IDs of each of a plurality of unit cells included in a folding electrode assembly (530) obtained using at least one of the first reading device (510) and the second reading device (520) with a cell ID corresponding to the folding electrode assembly (530) obtained using the third reading device (540). For example, the second sub-equipment (110b) may be configured to load a count whenever the first reading device (510) and / or the second reading device (520) detect a code object, and to match a plurality of unit cell IDs obtained until a specified number of counts are loaded with a cell ID corresponding to the folding electrode assembly (530) obtained when the third reading device (540) detects a code object (532).

[0142] According to one embodiment, the second sub-equipment (110b) may be configured to acquire folding process data and folding inspection data.

[0143] According to one embodiment, the folding process data may include at least one of information related to the equipment that performed the folding process (e.g., information on the type of unit cell that the loading device loads to the folding device, information on the number of unit cells that the folding device folds to form a folding electrode assembly (530), etc.) and the time at which the folding electrode assembly (530) was formed through the folding process.

[0144] According to one embodiment, the folding inspection data may include at least one of measurement information obtained by measuring the dimensions of a folding electrode assembly (530) and a plurality of unit cells included therein using a scanning method, a vision image obtained by capturing the appearance of the folding electrode assembly (530) and a plurality of unit cells included therein through a vision machine, short-circuit information obtained by inspecting whether the folding electrode assembly (530) is short-circuited, and state information of the folding electrode assembly (530) and a plurality of unit cells included therein.

[0145] The status information may include the quality of the folding electrode assembly (530) determined based on at least one of measurement information, a vision image, and short circuit information. For example, the status information may include at least one of the quality determined based on the dimensions of the folding electrode assembly (530) and a plurality of unit cells included therein included in the measurement information, the quality determined based on whether there is an internal short circuit of the folding electrode assembly (530) included in the short circuit information, and the alignment state of the plurality of unit cells determined based on the vision image, the folding state, the weight of the folding electrode assembly (530), the top part, the bottom part, the side, and the type of defect that occurred on the electrode tabs (531, 533).

[0146] According to one embodiment, the second sub-equipment (110b) may be configured to map a cell ID corresponding to a folding electrode assembly (530) to folding process data and / or folding inspection data. Accordingly, tracking of the folding process data and / or folding inspection data of the folding electrode assembly (530) based on the cell ID may be provided.

[0147] According to one embodiment, the second sub-equipment (110b) can transmit cell tracking data to the controller (120). Here, the cell tracking data may include a cell ID corresponding to the folding electrode assembly (530). In one embodiment, the cell tracking data may further include folding process data and / or folding inspection data of a folding process targeting the folding electrode assembly (530). In this case, the cell tracking data may include information regarding the mapping between the cell ID and the folding process data and / or folding inspection data.

[0148] According to one embodiment, the cell tracking data may include the time when the cell ID of the folding electrode assembly (530) is acquired during the folding process. In one embodiment, the cell tracking data may further include the time when the cell ID of the folding electrode assembly (530) and the folding process data and / or folding inspection data are mapped.

[0149] FIG. 6 is a diagram illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a packaging process for a stacked electrode assembly.

[0150] Referring to FIG. 6, the second sub-equipment (110b) can perform a packaging process to form a battery cell (e.g., a prismatic battery cell or a pouch-type battery cell) (614e, 614f, 614g) by packaging a stacked electrode assembly (601a, 601b, 601c, 601d) into a cell case (e.g., a metal case or a pouch). Here, the stacked electrode assembly (601a, 601b, 601c, 601d) introduced into the packaging process may be an electrode assembly that has undergone the stacking process of FIG. 4.

[0151] According to one embodiment, the second sub-sub-sub (110b) may include a plurality of packaging process devices for performing a packaging process. The plurality of packaging process devices may include a lead welding device and a packaging device. Here, the lead welding device may include a cathode lead welding device for welding the cathode tab (602a, 602b) and the cathode lead (611c, 611d, 611e, 611f, 611g) of a stacked electrode assembly (601a, 601b, 601c, 601d) and an anode lead welding device for welding the anode tab (606a, 606b, 606c) and the anode lead (613d, 613e, 613f, 613g) of a stacked electrode assembly (601a, 601b, 601c, 601d). The packaging device may be configured to form a battery cell (614e, 614f, 614g) by packaging a stacked electrode assembly (601d), in which negative leads (611c, 611d, 611e, 611f, 611g) and positive leads (613d, 613e, 613f, 613g) are welded, into a cell case.

[0152] According to one embodiment, the second sub-equipment (110b) may include a first reading device (610) for detecting a code object (603a or 605a) formed on a stacked electrode assembly (601a) during a packaging process. The second sub-equipment (110b) may be configured to obtain an electrode assembly ID of the stacked electrode assembly (601a) using the first reading device (610). The code object detected by the first reading device (610) may be the same as the code object used to obtain the electrode assembly ID of the stacked electrode assembly (601a) during the stacking process of FIG. 4. For example, when an electrode assembly ID is obtained by detecting a code object (603a) formed on a negative tab (602a) of a stacked electrode assembly (601a) during a stacking process, the first reading device (610) may be configured to obtain the electrode assembly ID by detecting the code object (603a) formed on the negative tab (602a) of the stacked electrode assembly (601a). In this case, the first reading device (610) may be placed before the negative lead welding device on the packaging process line. As another example, when an electrode assembly ID is obtained by detecting a code object (605a) formed on a bonding tape (604a) of a stacked electrode assembly (601a) during a stacking process, the first reading device (610) may be configured to obtain the electrode assembly ID by detecting a code object (605a) formed on a bonding tape (604a) of a stacked electrode assembly (601a). In this case, the first reading device (610) may be placed on a packaging process line prior to the packaging device.

[0153] According to one embodiment, the second sub-equipment (110b) may include a first marking device (620) for marking a code object (612c) on a negative lead (611c) during a packaging process and a second reading device (630) for detecting a code object (612d) formed on a negative lead (611d). At this time, since the code object (612c, 612d) must be marked after the negative lead (611c, 611d) is welded to a stacked electrode assembly (601c, 601d), the first marking device (620) may be positioned after the negative lead welding device in the direction of process progress on the packaging process line. Additionally, to detect code objects (612c, 612d) formed by the first marking device (620), the second reading device (630) may be positioned after the first marking device (620) in the process direction on the packaging process line.

[0154] According to one embodiment, the second sub-equipment (110b) may include a second marking device (640) for marking code objects (615e, 615f, 615g, 616f, 616g) on ​​battery cells (614e, 614f, 614g) during a packaging process. The second marking device (640) may be configured to mark at least one of a first code object (615e, 615f, 615g) and a second code object (616f, 616g) on ​​battery cells (614e, 614f, 614g). Here, the first code object (615e, 615f, 615g) may be formed in a void portion that is subsequently removed in a finished product stage, and the second code object (616f, 616g) may be formed in a case portion.

[0155] According to one embodiment, the second sub-equipment (110b) may include at least one of a third reading device (650) for detecting a code object (615e, 615f, 615g) formed on a battery cell (614e, 614f, 614g) and a fourth reading device (660) for detecting a code object (616f, 616g) formed on a battery cell (614f, 614g).

[0156] According to one embodiment, the second sub-equipment (110b) can obtain a cell ID (e.g., battery cell ID) corresponding to a battery cell by using at least one of the second reading device (620), the third reading device (650), and the fourth reading device (660). For example, the second sub-equipment (110b) can obtain a cell ID corresponding to a battery cell by detecting code objects (612c, 612d) formed on the negative leads (611c, 611d) using the second reading device (620). In this case, the cell ID may be based on the code objects (612c, 612d). As another example, the second sub-equipment (110b) can obtain a cell ID corresponding to the battery cells (614e, 614f, 614g) by detecting a code object (615e, 615f, 615g) formed on the void portion of the battery cells (614e, 614f, 614g) using the third reading device (650). In this case, the cell ID may be based on the code object (615e, 615f, 615g). As yet another example, the second sub-equipment (110b) can obtain a cell ID corresponding to the battery cells (614f, 614g) by detecting a code object (616f, 616g) formed on the case portion of the battery cells (614f, 614g) using the fourth reading device (660). In this case, the cell ID can be based on the code object (616f, 616g).

[0157] According to one embodiment, the second sub-equipment (110b) may be configured to match the electrode assembly ID of a stacked electrode assembly (601a, 601b, 601c, 601d) obtained using the first reading device (610) with the cell ID corresponding to a battery cell obtained using at least one of the second reading device (630), the third reading device (650), and the fourth reading device (660).

[0158] According to one embodiment, the second sub-equipment (110b) may be configured to acquire packaging process data and packaging inspection data of the battery cell (614g).

[0159] According to one embodiment, the packaging process data may include at least one of information related to the equipment that performed the packaging process (e.g., welding information related to the output energy of the lead welding device, welding time, welding location, and number of welds, packaging information related to the packaging temperature and pressure of the packaging device, etc.) and the time during which the battery cell (614g) was formed through the packaging process.

[0160] According to one embodiment, the packaging inspection data may include at least one of measurement information obtained by scanning the battery cell (614g), a vision image obtained by capturing the exterior of the battery cell (614g) through a vision machine, welding inspection information obtained by inspecting the welding status of the battery cell (614g), short-circuit information obtained by inspecting whether the battery cell (614g) is short-circuited, resistance information obtained by inspecting the insulation resistance of the battery cell (614g), and state information of the battery cell (614g).

[0161] The status information may include the quality of the battery cell (614g) determined based on at least one of measurement information, vision image, welding inspection information, short circuit information, and resistance information. For example, the status information may include at least one of the quality determined based on the dimensions of the battery cell (614g) included in the measurement information, the quality determined based on the welding condition of the battery cell (614g) included in the welding inspection information, the quality determined based on the insulation resistance of the battery cell (614g) included in the resistance information, the condition of the leads (611g, 613g) of the battery cell (614g) determined based on the vision image, the weight of the battery cell (614g), and information on the type of defect that occurred on the top, bottom, and sides.

[0162] According to one embodiment, the second sub-equipment (110b) may be configured to map a cell ID corresponding to a battery cell (614g) to packaging process data and / or packaging inspection data. Accordingly, tracking of the packaging process data and / or packaging inspection data of the battery cell (614g) based on the cell ID may be provided.

[0163] According to one embodiment, the second sub-equipment (110b) can transmit cell tracking data to the controller (120). Here, the cell tracking data may include a cell ID corresponding to a battery cell (614g). In one embodiment, the cell tracking data may further include packaging process data and / or packaging inspection data of a packaging process targeting the battery cell (614g). In this case, the cell tracking data may include information regarding the mapping between the cell ID and the packaging process data and / or packaging inspection data.

[0164] According to one embodiment, the cell tracking data may include the time when the cell ID of the battery cell (614g) is acquired during the packaging process. In one embodiment, the cell tracking data may further include the time when the cell ID of the battery cell (614g) is mapped to the packaging process data and / or packaging inspection data.

[0165] FIG. 7 is a drawing illustrating an example of a secondary battery manufacturing system according to one embodiment of the present disclosure acquiring a cell ID corresponding to a semi-finished cell based on a packaging process for a folding electrode assembly.

[0166] Referring to FIG. 7, the second sub-equipment (110b) can perform a packaging process to form a battery cell (e.g., a prismatic battery cell or a pouch-type battery cell) (714e, 714f, 714g) by packaging a folding electrode assembly (701a, 701b, 701c, 701d) into a cell case (e.g., a metal case or a pouch). Here, the folding electrode assembly (701a, 701b, 701c, 701d) introduced into the packaging process may be an electrode assembly that has undergone the folding process of FIG. 5.

[0167] According to one embodiment, the second sub-equipment (110b) may include a plurality of packaging process devices for performing a packaging process. The plurality of packaging process devices may include a lead welding device and a packaging device. Here, the lead welding device may include a cathode lead welding device for welding the cathode tab (702a, 702b) and the cathode lead (711c, 711d, 711e, 711f, 711g) of a folding electrode assembly (701a, 701b, 701c, 701d) and an anode lead welding device for welding the anode tab (706a, 706b, 706c) and the anode lead (713d, 713e, 713f, 713g) of a folding electrode assembly (701a, 701b, 701c, 701d). The packaging device may be configured such that the negative leads (711c, 711d, 711e, 711f, 711g) and positive leads (713d, 713e, 713f, 713g) package the folding electrode assembly (701a, 701b, 701c, 701d) into a cell case to form a battery cell (714e, 714f, 714g).

[0168] According to one embodiment, the second sub-equipment (110b) may include a first reading device (710) for detecting code objects (703a, 703b) formed on the negative tabs (702a, 702b) of the folding electrode assemblies (701a, 701b) during the packaging process. The second sub-equipment (110b) may be configured to obtain the electrode assembly ID of the folding electrode assemblies (701a, 701b) using the first reading device (710). In this case, the first reading device (710) may be placed on the packaging process line prior to the negative lead welding device.

[0169] According to one embodiment, the second sub-equipment (110b) may include a first marking device (720) for marking a code object (712c) on a negative lead (711c) during a packaging process and a second reading device (730) for detecting a code object (712d) formed on a negative lead (711d). At this time, since the code object (712c, 712d) must be marked after the negative lead (711c, 711d) is welded to the folding electrode assembly (701c, 701d), the first marking device (720) may be positioned after the negative lead welding device in the direction of process progress on the packaging process line. Additionally, to detect code objects (712c, 712d) formed by the first marking device (720), the second reading device (730) may be positioned after the first marking device (720) in the process direction on the packaging process line.

[0170] According to one embodiment, the second sub-equipment (110b) may include a second marking device (740) for marking code objects (715e, 715f, 715g, 716f, 716g) on ​​battery cells (714e, 714f, 714g) during a packaging process. The second marking device (740) may be configured to mark at least one of code objects (715e, 715f, 715g) and code objects (716f, 716g) on ​​battery cells (714e, 714f, 714g). Here, the code objects (715e, 715f, 715g) may be formed in a void portion that is subsequently removed in a finished product stage, and the code objects (716f, 716g) may be formed in a case portion.

[0171] According to one embodiment, the second sub-equipment (110b) may include at least one of a third reading device (750) for detecting a code object (715e, 715f, 715g) formed on a battery cell (714e, 714f, 714g) and a fourth reading device (760) for detecting a code object (716f, 716g) formed on a battery cell (714f, 714g).

[0172] According to one embodiment, the second sub-equipment (110b) can obtain a cell ID (e.g., battery cell ID) corresponding to a battery cell by using at least one of the second reading device (720), the third reading device (750), and the fourth reading device (760). For example, the second sub-equipment (110b) can obtain a cell ID corresponding to a battery cell by detecting code objects (712c, 712d) formed on the negative leads (711c, 711d) using the second reading device (720). In this case, the cell ID may be based on the code objects (712c, 712d). As another example, the second sub-equipment (110b) can obtain a cell ID corresponding to the battery cells (714e, 714f, 714g) by detecting a code object (715e, 715f, 715g) formed on the void portion of the battery cells (714e, 714f, 714g) using the third reading device (750). In this case, the cell ID may be based on the code object (715e, 715f, 715g). As yet another example, the second sub-equipment (110b) can obtain a cell ID corresponding to the battery cells (714f, 714g) by detecting a code object (716f, 716g) formed on the case portion of the battery cells (714f, 714g) using the fourth reading device (760). In this case, the cell ID can be based on the code object (716f, 716g).

[0173] According to one embodiment, the second sub-equipment (110b) may be configured to match the electrode assembly ID of the folding electrode assembly (701a, 701b, 701c, 701d) obtained using the first reading device (710) with the cell ID corresponding to the battery cell obtained using at least one of the second reading device (730), the third reading device (750), and the fourth reading device (760).

[0174] According to one embodiment, the second sub-equipment (110b) may be configured to acquire packaging process data and packaging inspection data of the battery cell (714g).

[0175] According to one embodiment, the packaging process data may include at least one of information related to the equipment that performed the packaging process (e.g., welding information related to the output energy of the lead welding device, welding time, welding location, and number of welding strokes, packaging information related to the packaging temperature and pressure of the packaging device, etc.) and the time during which the battery cell (714g) was formed through the packaging process.

[0176] According to one embodiment, the packaging inspection data may include at least one of measurement information obtained by scanning the battery cell (714g), a vision image obtained by capturing the exterior of the battery cell (714g) through a vision machine, welding inspection information obtained by inspecting the welding status of the battery cell (714g), short-circuit information obtained by inspecting whether the battery cell (714g) is short-circuited, resistance information obtained by inspecting the insulation resistance of the battery cell (714g), and status information of the battery cell (714g).

[0177] The status information may include the quality of the battery cell (714g) determined based on at least one of measurement information, vision image, welding inspection information, short circuit information, and resistance information. For example, the status information may include at least one of the quality determined based on the dimensions of the battery cell (714g) included in the measurement information, the quality determined based on the welding condition of the battery cell (714g) included in the welding inspection information, the quality determined based on the insulation resistance of the battery cell (714g) included in the resistance information, the condition of the leads (711g, 713g) of the battery cell (714g) determined based on the vision image, the weight of the battery cell (714g), and information on the type of defect that occurred on the top, bottom, and sides.

[0178] According to one embodiment, the second sub-equipment (110b) may be configured to map a cell ID corresponding to a battery cell (714g) to packaging process data and / or packaging inspection data. Accordingly, tracking of the packaging process data and / or packaging inspection data of the battery cell (714g) based on the cell ID may be provided.

[0179] According to one embodiment, the second sub-equipment (110b) can transmit cell tracking data to the controller (120). Here, the cell tracking data may include a cell ID corresponding to a battery cell (714g). In one embodiment, the cell tracking data may further include packaging process data and / or packaging inspection data of a packaging process targeting the battery cell (714g). In this case, the cell tracking data may include information regarding the mapping between the cell ID and the packaging process data and / or packaging inspection data.

[0180] According to one embodiment, the cell tracking data may include the time when the cell ID of the battery cell (714g) is acquired during the packaging process. In one embodiment, the cell tracking data may further include the time when the cell ID of the battery cell (714g) is mapped to the packaging process data and / or packaging inspection data.

[0181] Referring again to FIG. 1, the controller (120) can process cell tracking data obtained from the first sub-facility (110a) and the second sub-facility (110b).

[0182] According to one embodiment, the controller (120) may be implemented as a PLC (Programmable Logic Controller). The PLC may be a special type of microprocessor-based controller that uses programmable memory to store commands and implements functions such as logic, sequencing, timing, counting, and arithmetic to control machines and processes.

[0183] According to one embodiment, the controller (120) may include a power supply, a CPU, an input interface, an output interface, a communication circuit, and memory devices. The power supply may be configured to supply power to other elements of the controller (120), such as the CPU, the input interface, the output interface, the communication circuit, and memory devices, for the operation of the controller (120). Memory devices may include Read Only Memory (ROM) configured to store system programs, such as an operating system, and Random Access Memory (RAM) configured to store data, such as user programs, status information of input and output devices, timers, counters, and values ​​of other internal devices. The CPU may be configured to control communication between modules that implement logic and convert input signals into output operation signals. The CPU may operate based on system programs and user programs stored in memory devices. The CPU may be configured to write or read process data and inspection data to the data areas of memory devices based on system programs and user programs. Conditions or data of an industrial device and a production process may be transmitted to the CPU through an input module. The result processed by the CPU can be transmitted to the actuator through the output module. The communication circuit can be configured to establish a wired communication channel and / or a wireless communication channel between the controller (120) and the sub-equipments (110a, 110b) or external device, and to transmit and receive data to and from the sub-equipments (110a, 110b) or external device through the established communication channel.

[0184] However, it is not limited to this, and the controller (120) may include any one of a simple controller, a complex processor such as a microprocessor, a CPU, a GPU, etc., a processor configured by software, dedicated hardware, and firmware. The controller (120) may also be implemented by, for example, a general-purpose computer or application-specific hardware such as a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), and an Application Specific Integrated Circuit (ASIC).

[0185] The controller (120) can be configured to acquire cell tracking data from sub-facilities (110a, 110b).

[0186] According to one embodiment, cell tracking data may include IDs of semi-finished products obtained by sub-facilities (110a, 110b). A controller (120) may obtain an electrode ID corresponding to a unit electrode from a first sub-facility (110a). A controller (120) may obtain a cell ID corresponding to a semi-finished product cell containing a unit electrode from a second sub-facility (110b). For example, if the second sub-process is a lamination process, a controller (120) may obtain a cell ID (e.g., unit cell ID) corresponding to a unit cell containing a unit electrode from a second sub-facility (110b). For example, if the second sub-process is a stacking process or a folding process, a controller (120) may obtain a cell ID (e.g., electrode assembly ID) corresponding to an electrode assembly composed of a plurality of unit cells containing a unit electrode from a second sub-facility (110b). For example, if the second sub-process is a packaging process, the controller (120) can obtain a cell ID (e.g., battery cell ID) corresponding to a battery cell including a unit electrode from the second sub-facility (110b).

[0187] According to one embodiment, cell tracking data may include process data and / or inspection data of a semi-finished product obtained by sub-equipments (110a, 110b). Cell tracking data obtained from the first sub-equipment (110a) may include notching process data and / or notching inspection data corresponding to a unit electrode. Cell tracking data obtained from the second sub-equipment (110b) may include process data and / or inspection data corresponding to a semi-finished product cell. For example, if the second sub-process is a lamination process, cell tracking data obtained from the second sub-equipment (110b) may include lamination process data and / or lamination inspection data corresponding to a unit cell. For example, if the second sub-process is a stacking process, cell tracking data obtained from the second sub-equipment (110b) may include stacking process data and / or stacking inspection data corresponding to a stacked electrode assembly. For example, if the second sub-process is a folding process, the cell tracking data obtained from the second sub-facility (110b) may include folding process data and / or folding inspection data corresponding to a folding electrode assembly. For example, if the second sub-process is a packaging process, the cell tracking data obtained from the second sub-facility (110b) may include packaging process data and / or packaging inspection data corresponding to a battery cell.

[0188] The controller (120) may be configured to match an electrode ID obtained from the first sub-facility (110a) and a cell ID obtained from the second sub-facility (110b). Hereinafter, a method for the controller (120) to match the electrode ID and the cell ID is described for each embodiment in which the second sub-process is a lamination process, a stacking process, a folding process, or a packaging process. Meanwhile, the first sub-process is described using the case where it is a notching process as an example.

[0189] According to one embodiment, the controller (120) may be configured to obtain a cell ID (e.g., unit cell ID) corresponding to a unit cell including a unit electrode from a second sub-facility (110b) that performs a lamination process. Here, the cell ID is obtained by detecting a code object formed on the electrode tab of the unit cell by the reading device (330) of FIG. 3, and may be the same as the electrode ID. The controller (120) may be configured to match the same electrode ID and cell ID. Accordingly, tracking of notching process data and / or notching inspection data mapped to the electrode ID and lamination process data and / or lamination inspection data mapped to the cell ID may be provided based on at least one of the electrode ID and cell ID.

[0190] According to one embodiment, the controller (120) may be configured to obtain a cell ID (e.g., electrode assembly ID) corresponding to a stacked electrode assembly including a plurality of unit cells from a second sub-facility (110b) that performs a stacking process. Here, the cell ID may be obtained by at least one of the third reading device (460) and the fourth reading device (470) of FIG. 4. The controller (120) may be configured to further obtain a matching between a plurality of unit cell IDs and a cell ID for each of the plurality of unit cells included in the stacked electrode assembly from the second sub-facility (110b). Here, the plurality of unit cell IDs may be obtained by at least one of the first reading device (410) and the second reading device (420) of FIG. 4. The controller (120) may be configured to match the cell ID with the electrode ID by means of the unit cell ID of a unit cell including a unit electrode among the plurality of unit cell IDs matched with the cell ID. Accordingly, tracking of notching process data and / or notching inspection data mapped to an electrode ID and stacking process data and / or stacking inspection data mapped to a cell ID can be provided based on at least one of an electrode ID and a cell ID.

[0191] According to one embodiment, the controller (120) may be configured to obtain a cell ID (e.g., electrode assembly ID) corresponding to a folding electrode assembly including a plurality of unit cells from a second sub-facility (110b) that performs a folding process. Here, the cell ID may be obtained by the third reading device (540) of FIG. 5. The controller (120) may be configured to further obtain a matching between a plurality of unit cell IDs and a cell ID for each of the plurality of unit cells included in the folding electrode assembly from the second sub-facility (110b). Here, the plurality of unit cell IDs may be obtained by at least one of the first reading device (510) and the second reading device (520) of FIG. 5. The controller (120) may be configured to match the cell ID with the electrode ID by means of the unit cell ID of a unit cell including a unit electrode among the plurality of unit cell IDs matched with the cell ID. Accordingly, tracking of notching process data and / or notching inspection data mapped to an electrode ID and folding process data and / or folding inspection data mapped to a cell ID can be provided based on at least one of an electrode ID and a cell ID.

[0192] According to one embodiment, the controller (120) may be configured to obtain a cell ID (e.g., battery cell ID) corresponding to a battery cell in which an electrode assembly is packaged in a cell case from a second sub-facility (110b) that performs a packaging process. Here, the cell ID may be obtained by at least one of the second reading device (630) (or 730), the third reading device (650) (or 750), and the fourth reading device (660) (or 760) of FIG. 6 (or FIG. 7). The controller (120) may be configured to further obtain a match between an electrode assembly ID corresponding to an electrode assembly constituting the battery cell and a cell ID. Here, the electrode assembly ID may be obtained by the first reading device (610) (or 710) of FIG. 6 (or FIG. 7). Additionally, the controller (120) may be configured to match an electrode ID and an electrode assembly ID based on cell tracking data obtained from a sub-facility performing a preceding stacking process or folding process. The controller (120) may be configured to match an electrode ID and a cell ID using the electrode assembly ID as a medium. Accordingly, tracking of notching process data and / or notching inspection data mapped to the electrode ID, and packaging process data and / or packaging inspection data mapped to the cell ID, may be provided based on at least one of the electrode ID and the cell ID.

[0193] Hereinafter, with reference to FIGS. 8 and 9, a method for acquiring cell tracking data in process order from multiple sub-facilities performing multiple sub-processes included in a secondary battery assembly process and matching the ID of a semi-finished product is described. Specifically, with reference to FIGS. 8, a secondary battery assembly process including a notching process, a lamination process, a stacking process, and a packaging process is described, and with reference to FIGS. 9, a secondary battery assembly process including a notching process, a lamination process, a folding process, and a packaging process is described.

[0194] FIG. 8 is a block diagram of a secondary battery manufacturing system for explaining a cell tracking method according to one embodiment of the present disclosure.

[0195] Referring to FIG. 8, a secondary battery manufacturing system (800) may include a first sub-equipment (810a) for performing a notching process, a second sub-equipment (810b) for performing a lamination process, a third sub-equipment (810c) for performing a stacking process, a fourth sub-equipment (810d) for performing a packaging process, a controller (820), and a server (830).

[0196] According to one embodiment, the first sub-equipment (810a) may be configured to perform a notching process to form an electrode tab on an electrode sheet (801) and to mark a code object on the electrode tab of the electrode sheet (801). The first sub-equipment (810a) may be configured to obtain an electrode ID corresponding to a target unit electrode by detecting the code object marked on the target electrode tab of the electrode sheet (801). The first sub-equipment (810a) may transmit the obtained electrode ID corresponding to the target unit electrode to a controller (820).

[0197] According to one embodiment, the second sub-equipment (810b) performs a lamination process to form a unit cell (802) by bonding an electrode sheet with electrode tabs formed by the first sub-equipment (810a) and a separator, and cutting by unit electrode. It may be configured to obtain a unit cell ID corresponding to the unit cell (802) by detecting a code object formed on the electrode tab of the unit cell (802). At this time, since the unit cell (802) includes a target unit electrode, the electrode ID obtained by the first sub-equipment (810a) and the unit cell ID obtained by the second sub-equipment (810b) may be the same. The second sub-equipment (810b) may transmit the unit cell ID corresponding to the obtained unit cell (802) to the controller (820).

[0198] According to one embodiment, the controller (820) may be configured to match an electrode ID obtained from a first sub-facility (810a) with a unit cell ID obtained from a second sub-facility (810b).

[0199] According to one embodiment, the third sub-equipment (810c) performs a stacking process to form a stacked electrode assembly (804) by stacking a plurality of unit cells (803) formed by the second sub-equipment (810b), and may be configured to obtain a plurality of unit cell IDs corresponding to each of the plurality of unit cells (803) and an electrode assembly ID corresponding to the stacked electrode assembly (804). In this case, the third sub-equipment (810c) may be configured to mark a code object for obtaining the electrode assembly ID on the stacked electrode assembly (804) on a bonding tape. The third sub-equipment (810c) may be configured to match the obtained plurality of unit cell IDs and electrode assembly IDs. At this time, the plurality of unit cells (803) may include a unit cell (802). The third sub-equipment (810c) may transmit the plurality of unit cell IDs, electrode assembly IDs, and the matching thereof to the controller (820).

[0200] According to one embodiment, the controller (820) may be configured to match the unit cell ID obtained from the second sub-facility (810b) with the electrode assembly ID obtained from the third sub-facility (810c). For example, the controller (820) may be configured to match the unit cell ID obtained from the second sub-facility (810b) with the electrode assembly ID obtained from the third sub-facility (810c) by means of the unit cell ID corresponding to the unit cell (802) among the plurality of unit cell IDs corresponding to each of the plurality of unit cells (803) obtained from the third sub-facility (810c).

[0201] According to one embodiment, the fourth sub-equipment (810d) performs a packaging process to form a battery cell (805) by packaging a stacked electrode assembly (804) formed by the third sub-equipment (810c) into a cell case, and may be configured to obtain an electrode assembly ID corresponding to the stacked electrode assembly (804) and a battery cell ID corresponding to the battery cell (805). In this case, the fourth sub-equipment (810d) may be configured to mark a code object for obtaining the battery cell ID on the battery cell (805). The fourth sub-equipment (810d) may be configured to match the obtained electrode assembly ID and battery cell ID. At this time, the battery cell (805) may include an electrode assembly (804). The fourth sub-equipment (810d) may transmit the electrode assembly ID, the battery cell ID, and the matching thereof to the controller (820).

[0202] According to one embodiment, the controller (820) may be configured to match an electrode assembly ID obtained from the third sub-facility (810c) with a battery cell ID obtained from the fourth sub-facility (810d). For example, the controller (820) may be configured to match an electrode assembly ID obtained from the third sub-facility (810c) with a battery cell ID obtained from the fourth sub-facility (810d) based on the matching between the electrode assembly ID obtained from the fourth sub-facility (810d) and the battery cell ID.

[0203] According to one embodiment, the controller (820) may be configured to store a log file including at least one of an electrode ID, a unit cell ID, an electrode assembly ID, and a battery cell ID. According to one embodiment, the log file may further include process data and / or inspection data mapped to each of the electrode ID, the unit cell ID, the electrode assembly ID, and the battery cell ID.

[0204] According to one embodiment, the controller (820) may be configured to generate a log file for the server based on a log file. The log file for the server may have a format accessible to the server (830). The log file for the server may follow the Hypertext Transfer Protocol (HTTP). For example, the log file for the server may have an HTML format. The controller (820) may be configured to send the log file for the server to the server (830).

[0205] According to one embodiment, the server (830) may include a physical server or a cloud server. The server (830) may be implemented as a virtual server, but is not limited thereto. The server (830) may provide data and analysis results to the operator through various frameworks. The framework may include a protocol that supports data transmission so that the client device can visualize the data through a user interface and provide an updated visualization when the data is calculated by the server (830). The protocol that supports data transmission may use HTML, JavaScript, and / or JSON.

[0206] The server (830) may include various APIs (Application Programming Interfaces) for storing data in databases and other data management tools. The APIs may also be used to retrieve data from databases of various data management systems. The data management system may provide access to the database, pull data from the database, retrieve data, and generate metrics. Here, metrics are tools for visualizing data. Metrics include time-series generated measurements and may be used for monitoring applications and generating status alerts.

[0207] According to one embodiment, the server (830) may be configured to store a match between different IDs obtained in each sub-process of the assembly process, such as an electrode ID, a unit cell ID, an electrode assembly ID, and a battery cell ID. Accordingly, tracking of the product's historic data during manufacturing or after shipment may be provided.

[0208] According to one embodiment, the server (830) may be configured to obtain a roll map of an electrode sheet (801) from an electrode manufacturing system (not shown) that performs an electrode manufacturing process prior to the secondary battery assembly process.

[0209] Here, the electrode manufacturing process may be a process for manufacturing an electrode sheet (801) through a mixing process that mixes various raw materials required for electrode manufacturing, a coating process that forms an anode and a cathode by applying an active material and a predetermined insulating material to the surface of a metal electrode plate serving as a current collector, a rolling process that rolls the coated electrode, and a slitting process that cuts the rolled electrode to the specifications of the electrode sheet (801). In these mixing, coating, rolling, and slitting processes, the electrode may be wound between an unwinder and a rewinder and proceed in a roll-to-roll state. A roll map may represent the progress of the electrode in each of the multiple sub-processes included in the electrode manufacturing process in the form of a bar. On the roll map, the longitudinal dimensions of the electrode may be plotted as coordinates, and information regarding the quality of the electrode may be plotted along with the corresponding coordinates. For example, information on the appearance of the electrode obtained by an image-based inspection device such as a vision machine, information on the breakage and seam of the electrode, information on the electrode part where sampling inspection was performed, information on the electrode part scheduled for scrap, information on the scrapped electrode part, information on whether the coating material and insulating material on the electrode are defective, and information on the type of defect of the electrode (e.g., pinhole defect, crater defect, line defect, crack defect, side ring defect, island defect, folding defect, wrinkle defect, gouging defect, dent defect, etc.) can be displayed on a roll map along with the corresponding coordinates.

[0210] According to one embodiment, the server (830) may be configured to calculate the position coordinates of the target unit electrode on the roll map of the electrode sheet (801) based on the electrode ID of the target unit electrode. For example, the server (830) may be configured to obtain the sequence number of the target unit electrode from the electrode ID and to calculate the position coordinates of the target unit electrode on the roll map by multiplying the sequence number by pitch information corresponding to the width of the unit electrode. According to one embodiment, the server (830) may be configured to match the electrode ID of the target unit electrode with the calculated position coordinates. Accordingly, tracking of the position coordinates of the target unit electrode on the roll map may be provided based on at least one of the electrode ID, unit cell ID, electrode assembly ID, and battery cell ID.

[0211] According to one embodiment, the server (830) may be configured to obtain activation data of the battery cell (805) from an activation system (not shown) that performs an activation process after the secondary battery assembly process.

[0212] Here, the activation process may be a process for stabilizing the battery structure and imparting battery characteristics to a battery cell (805) manufactured through an assembly process through multiple sub-processes such as aging, charging, and discharging. The activation data may include setting data related to setting values ​​(e.g., aging temperature, charge / discharge SOC, etc.) used in multiple sub-processes included in the activation process, state data related to the state of the battery cell (805) obtained during the activation process (e.g., voltage, current, temperature, SOC (State of Charge)), and diagnostic data diagnosing abnormalities (e.g., low voltage, internal short circuit, etc.) of the battery cell (805) based on the state data.

[0213] According to one embodiment, the server (830) may be configured to obtain activation data from an activation system (not shown). Furthermore, the server (830) may be configured to further obtain a match between the battery cell ID of the battery cell (805) and the activation data from the activation system (not shown). The activation system (not shown) may be configured to obtain the battery cell ID of the battery cell (805) to be subject to the activation process and to generate activation data of the battery cell (805) in the activation process. Additionally, the activation system (not shown) may be configured to match the battery cell ID of the battery cell (805) and the activation data with each other and to transmit the match between the battery cell ID and the activation data to the server (830). As the battery cell ID of the battery cell (805) is obtained by the secondary battery manufacturing system (800) as described above and is matched with an ID from a previous process (e.g., electrode ID, unit cell ID, electrode assembly ID), tracking of the activation data of the battery cell (805) can be provided based on at least one of the electrode ID, unit cell ID, electrode assembly ID, and battery cell ID.

[0214] FIG. 9 is a block diagram of a secondary battery manufacturing system for explaining a cell tracking method according to one embodiment of the present disclosure.

[0215] Referring to FIG. 9, a secondary battery manufacturing system (900) may include a first sub-equipment (910a) for performing a notching process, a second sub-equipment (910b) for performing a lamination process, a third sub-equipment (910c) for performing a folding process, a fourth sub-equipment (910d) for performing a packaging process, a controller (920), and a server (930). Here, since the controller (920) and the server (930) may have the same configuration as the controller (820) and the server (830) of FIG. 8, a redundant description thereof may be omitted.

[0216] According to one embodiment, the first sub-equipment (910a) performs a notching process to form an electrode tab on an electrode sheet (901) and may be configured to mark a code object on the electrode tab of the electrode sheet (901). The first sub-equipment (910a) may be configured to obtain an electrode ID corresponding to a target unit electrode by detecting the code object marked on the target electrode tab of the electrode sheet (901). The first sub-equipment (910a) may transmit the obtained electrode ID corresponding to the target unit electrode to a controller (920).

[0217] According to one embodiment, the second sub-equipment (910b) performs a lamination process to form a unit cell (902) by bonding an electrode sheet with electrode tabs formed by the first sub-equipment (910a) and a separator, and cutting by unit electrode. It may be configured to obtain a unit cell ID corresponding to the unit cell (902) by detecting a code object formed on the electrode tab of the unit cell (902). At this time, since the unit cell (902) includes a target unit electrode, the electrode ID obtained by the first sub-equipment (910a) and the unit cell ID obtained by the second sub-equipment (910b) may be the same. The second sub-equipment (910b) may transmit the unit cell ID corresponding to the obtained unit cell (902) to the controller (920).

[0218] According to one embodiment, the controller (920) may be configured to match an electrode ID obtained from a first sub-facility (910a) with a unit cell ID obtained from a second sub-facility (910b).

[0219] According to one embodiment, the third sub-equipment (910c) performs a folding process to form a folding electrode assembly (904) by folding a plurality of unit cells (903) formed by the second sub-equipment (910b), and may be configured to obtain a plurality of unit cell IDs corresponding to each of the plurality of unit cells (903) and an electrode assembly ID corresponding to the folding electrode assembly (904). The third sub-equipment (910c) may be configured to match the obtained plurality of unit cell IDs and electrode assembly IDs. At this time, the plurality of unit cells (903) may include a unit cell (902). The third sub-equipment (910c) may transmit the plurality of unit cell IDs, electrode assembly IDs, and the matching thereof to a controller (920).

[0220] According to one embodiment, the controller (920) may be configured to match the unit cell ID obtained from the second sub-equipment (910b) with the electrode assembly ID obtained from the third sub-equipment (910c). For example, the controller (920) may be configured to match the unit cell ID obtained from the second sub-equipment (910b) with the electrode assembly ID obtained from the third sub-equipment (910c) by means of the unit cell ID corresponding to the unit cell (902) among the plurality of unit cell IDs corresponding to each of the plurality of unit cells (903) obtained from the third sub-equipment (910c).

[0221] According to one embodiment, the fourth sub-equipment (910d) performs a packaging process to form a battery cell (905) by packaging a folding electrode assembly (904) formed by the third sub-equipment (910c) into a cell case, and may be configured to obtain an electrode assembly ID corresponding to the folding electrode assembly (904) and a battery cell ID corresponding to the battery cell (905). In this case, the fourth sub-equipment (910d) may be configured to mark a code object for obtaining the battery cell ID on the battery cell (905). The fourth sub-equipment (910d) may be configured to match the obtained electrode assembly ID and battery cell ID. At this time, the battery cell (905) may include an electrode assembly (904). The fourth sub-equipment (910d) may transmit the electrode assembly ID, the battery cell ID, and the matching thereof to the controller (920).

[0222] According to one embodiment, the controller (920) may be configured to match an electrode assembly ID obtained from the third sub-facility (910c) with a battery cell ID obtained from the fourth sub-facility (910d). For example, the controller (920) may be configured to match an electrode assembly ID obtained from the third sub-facility (910c) with a battery cell ID obtained from the fourth sub-facility (910d) based on the matching between the electrode assembly ID obtained from the fourth sub-facility (910d) and the battery cell ID.

[0223] FIG. 10 is a diagram illustrating a method for managing data obtained in each process of a secondary battery manufacturing system according to one embodiment of the present disclosure. FIG. 11 is a diagram showing roll map data illustrated in FIG. 10.

[0224] Referring to FIGS. 10 and 11, a secondary battery manufacturing system (1000) may be configured to map and manage roll map data (1030) collected based on an electrode manufacturing process (1010) and data (1060a, 1060b, 1060c, 1060d, 1070a, 1070b, 1070c, 1070d, 1080a, 1080b, 1080c, 1080d) collected based on an assembly process (1040).

[0225] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to acquire roll map data (1030) based on an electrode manufacturing process (1010). The roll map data (1030) may be data that simulates the progress of the electrode 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 a bar shape.

[0226] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to acquire identification data (1060a, 1060b, 1060c, 1060d), process data (1070a, 1070b, 1070c, 1070d), and inspection data (1080a, 1080b, 1080c, 1080d) of semi-finished products based on an assembly process (1040).

[0227] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to acquire an electrode ID (1060a) of a unit electrode, process data (1070a) of the notching process (1050a), and inspection data (1080a) based on a notching process (1050a) included in an assembly process (1040). At this time, the process data (1070a) and the inspection data (1080a) may be mapped to the electrode ID (1060a).

[0228] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to map an electrode ID (1060a) to roll map data (1030). Accordingly, tracking of roll map data (1030), process data (1070a), and inspection data (1080a) based on the electrode ID (1060a) may be provided.

[0229] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to acquire a unit cell ID (1060b) of a unit cell, process data (1070b) of a lamination process (1050b), and inspection data (1080b) based on a lamination process (1050b) included in an assembly process (1040). At this time, the process data (1070b) and inspection data (1080b) may be mapped to the unit cell ID (1060b).

[0230] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to match a unit cell ID (1060b) with an electrode ID (1060a). Accordingly, tracking of roll map data (1030), process data (1070a, 1070b), and inspection data (1080a, 1080b) may be provided based on at least one of the electrode ID (1060a) and the unit cell ID (1060b).

[0231] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to acquire an electrode assembly ID (1060c), process data (1070c) of a stacking process or folding process (1050c), and inspection data (1080c) of an electrode assembly based on a stacking process or folding process (1050c) included in an assembly process (1040). At this time, the process data (1070c) and inspection data (1080c) may be mapped to the electrode assembly ID (1060c).

[0232] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to match an electrode assembly ID (1060c) with a unit cell ID (1060b). Accordingly, traceability for roll map data (1030), process data (1070a, 1070b, 1070c), and inspection data (1080a, 1080b, 1080c) may be provided based on at least one of the electrode ID (1060a), unit cell ID (1060b), and electrode assembly ID (1060c).

[0233] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to acquire a battery cell ID (1060d) of a battery cell, process data (1070d) of the packaging process (1050d), and inspection data (1080d) based on a packaging process (1050d) included in an assembly process (1040). At this time, the process data (1070d) and the inspection data (1080d) may be mapped to the battery cell ID (1060d).

[0234] According to one embodiment, a secondary battery manufacturing system (1000) may be configured to match a battery cell ID (1060d) with an electrode assembly ID (1060c). Accordingly, traceability for roll map data (1030), process data (1070a, 1070b, 1070c, 1070d), and inspection data (1080a, 1080b, 1080c, 1080d) may be provided based on at least one of an electrode ID (1060a), a unit cell ID (1060b), an electrode assembly ID (1060c), and a battery cell ID (1060d).

[0235] FIG. 12 is a flowchart of the operation of a secondary battery manufacturing system according to one embodiment of the present disclosure. Since the operation method of FIG. 12 can be performed by the secondary battery manufacturing system (100) of FIG. 1, the secondary battery manufacturing system (800) of FIG. 8, or the secondary battery manufacturing system (900) of FIG. 9, descriptions that overlap with the above-mentioned content may be omitted.

[0236] The embodiment illustrated in FIG. 12 is merely one example, and the sequence of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 12, and some operations illustrated in FIG. 12 may be omitted, the order of operations may be changed, or operations may be merged.

[0237] Referring to FIG. 12, in P110, the secondary battery manufacturing system can obtain an electrode ID corresponding to a unit electrode based on a first sub-process. According to one embodiment, the first sub-process may be a notching process.

[0238] In P120, the secondary battery manufacturing system can obtain a cell ID corresponding to a semi-finished cell based on a second sub-process. Here, the semi-finished cell may include a unit electrode having an electrode ID obtained in P110.

[0239] According to one embodiment, the second sub-process may be a lamination process, a stacking process, a folding process, or a packaging process. An embodiment in which the second sub-process is a lamination process may be specifically described through FIG. 13, which will be described later; an embodiment in which the second sub-process is a stacking process may be specifically described through FIG. 14, which will be described later; an embodiment in which the second sub-process is a folding process may be specifically described through FIG. 15, which will be described later; and an embodiment in which the second sub-process is a packaging process may be specifically described through FIG. 16, which will be described later.

[0240] In P130, the secondary battery manufacturing system can match the electrode ID obtained in P110 with the cell ID obtained in P120.

[0241] FIG. 13 is a flowchart of the operation of a secondary battery manufacturing system according to one embodiment of the present disclosure. Since the operation method of FIG. 13 can be performed by the secondary battery manufacturing system (100) of FIG. 1, the secondary battery manufacturing system (800) of FIG. 8, or the secondary battery manufacturing system (900) of FIG. 9, descriptions that overlap with the above-mentioned content may be omitted.

[0242] The embodiment illustrated in FIG. 13 is merely one example, and the sequence of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 13, and some operations illustrated in FIG. 13 may be omitted, the order of operations may be changed, or operations may be merged.

[0243] Referring to FIG. 13, in P210, the secondary battery manufacturing system can obtain an electrode ID by detecting a first code object formed on the electrode tab of a unit electrode during the notching process.

[0244] In P220, the secondary battery manufacturing system can obtain a cell ID by detecting a first code object formed on the electrode tab of a unit cell during the lamination process. Here, the unit cell may include a unit electrode having the electrode ID obtained in P210.

[0245] In P230, the secondary battery manufacturing system can match the electrode ID obtained in P210 with the cell ID obtained in P220.

[0246] FIG. 14 is a flowchart of the operation of a secondary battery manufacturing system according to one embodiment of the present disclosure. Since the operation method of FIG. 14 can be performed by the secondary battery manufacturing system (100) of FIG. 1, the secondary battery manufacturing system (800) of FIG. 8, or the secondary battery manufacturing system (900) of FIG. 9, descriptions that overlap with the above-mentioned content may be omitted.

[0247] The embodiment illustrated in FIG. 14 is merely one example, and the sequence of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 14, and some operations illustrated in FIG. 14 may be omitted, the order of operations may be changed, or operations may be merged.

[0248] Referring to FIG. 14, in P310, the secondary battery manufacturing system can obtain a plurality of unit cell IDs corresponding one-to-one to each of the plurality of unit cells.

[0249] In P320, the secondary battery manufacturing system can form a stacked electrode assembly by stacking multiple unit cells having multiple unit cell IDs obtained in P310.

[0250] In P330, the secondary battery manufacturing system can obtain a cell ID by detecting a second code object formed on a stacked electrode assembly formed in P320.

[0251] In P340, the secondary battery manufacturing system can match a cell ID obtained in P330 with multiple unit cell IDs obtained in P310.

[0252] FIG. 15 is a flowchart of the operation of a secondary battery manufacturing system according to one embodiment of the present disclosure. Since the operation method of FIG. 15 can be performed by the secondary battery manufacturing system (100) of FIG. 1, the secondary battery manufacturing system (800) of FIG. 8, or the secondary battery manufacturing system (900) of FIG. 9, descriptions that overlap with the above-mentioned content may be omitted.

[0253] The embodiment illustrated in FIG. 15 is merely one example, and the sequence of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 15, and some operations illustrated in FIG. 15 may be omitted, the order of operations may be changed, or operations may be merged.

[0254] Referring to FIG. 15, in P410, the secondary battery manufacturing system can obtain a plurality of unit cell IDs corresponding one-to-one to each of the plurality of unit cells.

[0255] In P420, the secondary battery manufacturing system can form a foldable electrode assembly by folding a plurality of unit cells having a plurality of unit cell IDs obtained in P410.

[0256] In P430, the secondary battery manufacturing system can obtain a cell ID by detecting a third code object formed on the folding electrode assembly formed in P420.

[0257] In P440, the secondary battery manufacturing system can match a cell ID obtained in P430 with multiple unit cell IDs obtained in P410.

[0258] FIG. 16 is a flowchart of the operation of a secondary battery manufacturing system according to one embodiment of the present disclosure. Since the operation method of FIG. 16 can be performed by the secondary battery manufacturing system (100) of FIG. 1, the secondary battery manufacturing system (800) of FIG. 8, or the secondary battery manufacturing system (900) of FIG. 9, descriptions that overlap with the above-mentioned content may be omitted.

[0259] The embodiment illustrated in FIG. 16 is merely one example, and the sequence of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 16, and some operations illustrated in FIG. 16 may be omitted, the order of operations may be changed, or operations may be merged.

[0260] Referring to FIG. 16, in P510, the secondary battery manufacturing system can obtain an electrode assembly ID corresponding to the electrode assembly.

[0261] In P520, the secondary battery manufacturing system can form a battery cell by packaging an electrode assembly having an electrode assembly ID obtained in P510 into a cell case.

[0262] In P530, the secondary battery manufacturing system can obtain a cell ID by detecting a fourth code object formed on the battery cell formed in P520.

[0263] In P540, the secondary battery manufacturing system can match the cell ID obtained in P530 with the electrode assembly ID obtained in P510.

[0264] FIG. 17 is a flowchart of the operation of a secondary battery manufacturing system according to one embodiment of the present disclosure. Since the operation method of FIG. 17 can be performed by the secondary battery manufacturing system (100) of FIG. 1, the secondary battery manufacturing system (800) of FIG. 8, or the secondary battery manufacturing system (900) of FIG. 9, descriptions that overlap with the above-mentioned content may be omitted.

[0265] The embodiment illustrated in FIG. 17 is merely one example, and the sequence of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 17, and some operations illustrated in FIG. 17 may be omitted, the order of operations may be changed, or operations may be merged.

[0266] Referring to FIG. 17, in P610, the secondary battery manufacturing system can obtain a roll map of an electrode roll including a unit electrode based on an electrode manufacturing process.

[0267] In P620, the secondary battery manufacturing system can obtain an electrode ID corresponding to a unit electrode based on an assembly process. Here, the unit electrode may be included in an electrode roll corresponding to the roll map obtained in P610.

[0268] In P630, the secondary battery manufacturing system can calculate the position coordinates of the unit electrode on the roll map obtained in P610 based on the electrode ID obtained in P620.

[0269] In P640, the secondary battery manufacturing system can match the electrode ID obtained in P620 with the position coordinates on the roll map calculated in P630.

[0270] A secondary battery manufacturing system according to the aforementioned embodiments may include a processor, memory for storing and executing program data, permanent storage such as a disk drive, a communication port for communicating with an external device, and user interface devices such as a touch panel, a key, an icon, etc. Methods implemented as software modules or algorithms may be stored on a computer-readable recording medium as computer-readable code or program instructions executable on the processor. Here, computer-readable recording media include magnetic storage media (e.g., ROM (read-only memory), RAM (random-access memory), floppy disks, hard disks, etc.) and optical reading media (e.g., CD-ROM, DVD (Digital Versatile Disc)). Computer-readable recording media may be distributed across networked computer systems, allowing computer-readable code to be stored and executed in a distributed manner. The medium is computer-readable, stored in memory, and can be executed by a processor.

[0271] Various embodiments of the present disclosure may be represented by functional block configurations and various processing steps. These functional blocks may be implemented by various numbers of hardware and / or software configurations that execute specific functions. For example, the embodiments may employ integrated circuit configurations such as memory, processing, logic, look-up tables, etc., which can execute various functions by the control of one or more microprocessors or other control devices. Similar to how components may be implemented as software programming or software elements, the embodiments may be implemented in programming or scripting languages ​​such as C, C++, Java, assembler, etc., including various algorithms implemented as combinations of data structures, processes, routines, or other programming configurations. Functional aspects may be implemented as algorithms executed on one or more processors. Additionally, the embodiments may employ prior art for electronic configuration, signal processing, and / or data processing. Terms such as “mechanism,” “element,” “means,” and “configuration” may be used broadly and are not limited to mechanical and physical configurations. The above terms may include the meaning of a series of software processes (routines) in conjunction with processors, etc.

[0272] The aforementioned embodiments are merely examples, and other embodiments may be implemented within the scope of the claims set forth below.

Claims

1. A step of obtaining an electrode ID corresponding to a unit electrode based on a first sub-process included in a secondary battery manufacturing process; Based on a second sub-process included in the above secondary battery manufacturing process, a step of obtaining a cell ID corresponding to a semi-finished cell including the unit electrode; and A cell tracking method comprising the step of matching the electrode ID and the cell ID.

2. In Paragraph 1, The above first sub-process is a notching process for forming an electrode tab on an electrode sheet, and A cell tracking method comprising the step of obtaining the electrode ID by detecting a first code object formed on the electrode tab during the first sub-process.

3. In Paragraph 2, A cell tracking method further comprising the step of marking the first code object on the electrode tab during the first sub-process.

4. In Paragraph 1, The above second sub-process is a lamination process that forms the semi-finished cell by bonding the unit electrode, on which an electrode tab is formed, and a separator. The above semi-finished product cell is a unit cell composed of the above unit electrode and the above separator, and A cell tracking method comprising the step of obtaining the cell ID by detecting a first code object formed on the electrode tab during the second sub-process.

5. In Paragraph 1, The second sub-process above is a stacking process for forming the semi-finished product cell by stacking a plurality of unit cells, each unit cell comprising the unit electrode and the separator, and The above semi-finished product cell is a stacked electrode assembly formed by stacking the above plurality of unit cells, and A cell tracking method comprising the step of obtaining the cell ID, wherein the step of obtaining the cell ID includes the step of obtaining the cell ID by detecting a second code object formed on the stacked electrode assembly during the second sub-process.

6. In Paragraph 5, The method further includes the step of obtaining a plurality of unit cell IDs corresponding one-to-one to each of the plurality of unit cells during the second sub-process above, and A cell tracking method comprising the step of matching the electrode ID and the cell ID, wherein the step of matching the plurality of unit cell IDs and the cell ID.

7. In Paragraph 5, The cell tracking method wherein the second code object is formed on the electrode tab of the outermost unit cell among the plurality of unit cells included in the stacked electrode assembly.

8. In Paragraph 5, The above second code object is a cell tracking method formed on a bonding tape for bonding the plurality of unit cells included in the stacked electrode assembly.

9. In Paragraph 8, A cell tracking method further comprising the step of marking the second code object on the bonding tape during the second sub-process.

10. In Paragraph 1, The above second sub-process is a stacking process for forming the semi-finished cell by cross-arranging and stacking the unit electrodes and separators, and The above semi-finished cell is a stacked electrode assembly formed by cross-arranging and stacking the unit electrodes and separators, and A cell tracking method comprising the step of obtaining the cell ID, wherein the step of obtaining the cell ID includes the step of obtaining the cell ID by detecting a second code object formed on the stacked electrode assembly during the second sub-process.

11. In Paragraph 1, The above second sub-process is a folding process for forming the semi-finished product cell by folding a plurality of unit cells, each unit cell comprising the unit electrode and the separator, and The above semi-finished product cell is a foldable electrode assembly formed by folding the above plurality of unit cells, and A cell tracking method comprising the step of obtaining the cell ID by detecting a third code object formed on the folding electrode assembly during the second sub-process.

12. In Paragraph 11, The cell tracking method, wherein the third code object is formed on the electrode tab of the outermost unit cell among the plurality of unit cells included in the folding electrode assembly.

13. In Paragraph 1, The above second sub-process is a packaging process for forming a battery cell by packaging an electrode assembly including the unit electrode into a cell case, and The above semi-finished product cell is the above battery cell, and A cell tracking method comprising the step of obtaining the cell ID by detecting a fourth code object formed on the battery cell during the second sub-process.

14. In Paragraph 13, The above second sub-process further includes the step of obtaining an electrode assembly ID corresponding to the electrode assembly, and A cell tracking method comprising the step of matching the electrode ID and the cell ID, wherein the step of matching the electrode assembly ID and the cell ID.

15. In Paragraph 13, The above-mentioned fourth code object is a cell tracking method formed on the lead of the battery cell or on the cell case.

16. In Paragraph 15, A cell tracking method further comprising the step of marking the fourth code object on the lead or the cell case during the second sub-process above.

17. In Paragraph 1, A step of obtaining a roll map of an electrode sheet including the unit electrode based on an electrode manufacturing process included in the above secondary battery manufacturing process; A step of calculating the position coordinates of the unit electrode on the roll map based on the electrode ID; and A cell tracking method comprising the step of matching the electrode ID and the position coordinates on the roll map.

18. In Paragraph 1, Based on the above first sub-process, a step of obtaining at least one of first process data and first inspection data; and A cell tracking method further comprising the step of mapping at least one of the first process data and the first inspection data to at least one of the electrode ID and the cell ID.

19. In Paragraph 18, The first process data includes at least one of information related to the equipment that performed the first sub-process on the unit electrode and the time during which the first sub-process was performed. A cell tracking method comprising at least one of the following: measurement information obtained by measuring dimensions related to the unit electrode by a scanning method, a vision image obtained by capturing the external appearance of the unit electrode, and state information of the unit electrode inspected based on at least one of the measurement information and the vision image.

20. In Paragraph 1, Based on a third sub-process included in the secondary battery manufacturing process above, a step of obtaining a second cell ID corresponding to a second semi-finished cell including the semi-finished cell; and A cell tracking method further comprising the step of matching the second cell ID with at least one of the electrode ID and the cell ID.

21. In Paragraph 20, Based on the above first sub-process, a step of obtaining at least one of first process data and first inspection data; Based on the second sub-process above, a step of obtaining at least one of second process data and second inspection data; and A cell tracking method further comprising the step of, after obtaining the second cell ID, mapping at least one of the first process data and the first inspection data and at least one of the second process data and the second inspection data to the second cell ID.

22. A first sub-equipment for performing a first sub-process included in a secondary battery manufacturing process; A second sub-facility for performing a second sub-process included in the above secondary battery manufacturing process; and It includes a controller that processes cell tracking data obtained from the first sub-equipment and the second sub-equipment, and The above controller is, From the above first sub-equipment, an electrode ID corresponding to a unit electrode is obtained, and From the above second sub-facility, a cell ID corresponding to a semi-finished product cell including the unit electrode is obtained, and A secondary battery manufacturing system configured to match the electrode ID and the cell ID.

23. In Paragraph 22, The above first sub-process is a notching process for forming an electrode tab on an electrode sheet, and The above second sub-process is a lamination process that forms the semi-finished cell by bonding the unit electrode having the electrode tab formed thereon and the separator. The above semi-finished product cell is a unit cell composed of the above unit electrode and the above separator, and The first sub-equipment is configured to obtain the electrode ID by detecting a first code object formed on the electrode tab during the first sub-process, and A secondary battery manufacturing system configured such that the second sub-equipment is configured to obtain the cell ID by detecting the first code object formed on the electrode tab during the second sub-process.

24. In Paragraph 22, The second sub-process above is a stacking process or a folding process for forming the semi-finished product cell by stacking or folding a plurality of unit cells including a unit cell composed of the unit electrode and the separator, and The above semi-finished cell is an electrode assembly formed by stacking or folding the above plurality of unit cells, and A secondary battery manufacturing system configured such that the second sub-facility is configured to obtain the cell ID by detecting a second code object formed on the electrode assembly during the second sub-process.

25. In Paragraph 22, The above second sub-process is a stacking process for forming the semi-finished cell by cross-arranging and stacking the unit electrodes and separators, and The above semi-finished cell is a stacked electrode assembly formed by cross-arranging and stacking the unit electrodes and separators, and A secondary battery manufacturing system configured such that the second sub-equipment is configured to obtain the cell ID by detecting a second code object formed on the stacked electrode assembly during the second sub-process.

26. In Paragraph 22, The above second sub-process is a packaging process for forming a battery cell by packaging an electrode assembly including the unit electrode into a cell case, and The above semi-finished product cell is the above battery cell, and A secondary battery manufacturing system configured such that the second sub-equipment is configured to obtain the cell ID by detecting a fourth code object formed on the battery cell during the second sub-process.

27. In Paragraph 22, The above controller is, At least one of first process data and first inspection data is obtained from the above first sub-equipment, and A secondary battery manufacturing system that maps at least one of the first process data and the first inspection data to at least one of the electrode ID and the cell ID.

28. In Paragraph 27, The first process data includes at least one of information related to the first sub-equipment that performed the first sub-process on the unit electrode and the time during which the first sub-equipment performed the first sub-process. A secondary battery manufacturing system comprising at least one of the following: measurement information obtained by measuring dimensions related to the unit electrode by a scanning method, a vision image obtained by capturing the external appearance of the unit electrode, and state information of the unit electrode inspected based on at least one of the measurement information and the vision image.

29. In Paragraph 28, It further includes a third sub-facility for performing a third sub-process included in the above secondary battery manufacturing process, and The above controller is, From the above third sub-facility, a second cell ID corresponding to a second semi-product cell including the above semi-product cell is obtained, and A secondary battery manufacturing system that matches the above second cell ID with at least one of the above electrode ID and the above cell ID.

30. In Paragraph 29, The above controller is, At least one of the first process data and the first inspection data is obtained from the first sub-equipment, and From the above second sub-equipment, at least one of second process data and second inspection data is obtained, and A secondary battery manufacturing system that, after obtaining the second cell ID, maps at least one of the first process data and the first inspection data and at least one of the second process data and the second inspection data to the second cell ID.

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