Battery manufacturing system and battery manufacturing method

Abstract

A system and method for manufacturing a battery are disclosed. One system may include a first cutter configured to cut a first electrode sheet into a first electrode portion having a first length; a second cutter configured to cut a second electrode sheet into a second electrode portion having a second length; a winder for winding the first electrode portion, the second electrode portion, and the separator between the first and second electrode portions to form an electrode assembly; and an identification information assigning device for assigning identification information to the electrode assembly based on the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or the position coordinate value of the first electrode sheet and / or the position coordinate value of the second electrode sheet.

Description

Technical Field

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

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2023-0103758 filed on August 8, 2023, and US Patent Application 18 / 606985 filed on March 15, 2024, and all the contents disclosed in the literature of the patent application are included as part of this specification.

Background Art

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

[0004] Secondary batteries are manufactured through an electrode process, an assembly process, and an activation process. Among them, the electrode process is the most core process for determining the yield and performance of battery cells. The electrode process can include a coating process, a roll pressing process, and a slitting process. In the coating process, an active material and an insulating material can be coated on the surface of a current collector. In the roll pressing process, the electrode can be pressed by a pressure roll. The roll pressing process can determine the density, performance, and surface quality of the electrode. In the slitting process, the electrode can be cut into a plurality of electrodes according to the design of the battery cell.

[0005] The background information provided herein is for the purpose of presenting generally disclosed context. Unless otherwise expressly stated herein, the material described in this background section is not prior art to the claims of this application, and nothing contained in this background section shall be considered prior art or a proposal of prior art. [Overview of the project] [Problems that the invention aims to solve]

[0006] This disclosure provides a battery manufacturing system and a battery manufacturing method that offer improved quality traceability in the battery manufacturing process.

[0007] Each aspect disclosed herein may include one or more features described in relation to other disclosed aspects or embodiments. [Means for solving the problem]

[0008] In one embodiment, the battery manufacturing system includes a first cutter configured to cut a first electrode sheet unwinded from a first electrode roll into a first electrode portion having a first length, a second cutter configured to cut a second electrode sheet unwinded from a second electrode roll into a second electrode portion having a second length, and a winder configured to wind the first electrode portion and the second electrode portion via a separator to form an electrode assembly. The device may include an identification information assigning device configured to assign identification information to the electrode assembly based on the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or the position coordinate values ​​of the first electrode sheet and / or the position coordinate values ​​of the second electrode sheet.

[0009] In other aspects, the system may include one or more of the following features: The system may further include a first notching device configured to notch a first electrode sheet unwinded from the first electrode roll, and a second notching device configured to notch a second electrode sheet unwinded from the second electrode roll. The system may further include a position measuring instrument that generates a first position signal of the first electrode sheet moving from the first electrode roll to the winder, and a second position signal of the second electrode sheet moving from the second electrode roll to the winder. Coordinate data including the position coordinate values ​​can be obtained based on the first and second position signals. At least one first electrode inspection and / or measuring instrument may be provided between the first electrode roll and the winder. At least one second electrode inspection and / or measuring instrument may be provided between the second electrode roll and the winder. The identification information assigning device is The system may include a process controller that controls one or more process equipment provided between the first electrode roll and the winder, and between the second electrode roll and the winder, an identification information management server, or a combination of the process controller and the identification information management server. The process controller and / or the identification information management server can manage identification information of the electrode assembly based on process event data. The process event data can be acquired when the first electrode sheet moves from the first electrode roll to the winder, and when the second electrode sheet moves from the second electrode roll to the winder. The system may further include a roll map generation server that generates a first electrode roll map and a second electrode roll map. The first electrode roll map may be a first simulated electrode sheet including first coordinate values ​​indicating the position of the first electrode sheet moving from the first electrode roll to the winder. The first electrode roll map may include first process event data acquired based on the movement of the first electrode sheet, and the second electrode roll map may be a second simulated electrode sheet including second coordinate values ​​indicating the position of the second electrode sheet moving from the second electrode roll to the winder, and the second electrode roll map may include second process event data acquired based on the movement of the second electrode sheet. The identification information assigning device may be coupled with the roll map generation server. The identification information assigning device and / or the roll map generation server may be configured to associate the identification information of the electrode assembly with at least one of the first coordinate values, second coordinate values, first process event data, or second process event data.

[0010] In one embodiment, a battery manufacturing system can be provided. The system may include a first cutter configured to cut a first electrode sheet unwinded from a first electrode roll into a first electrode portion having a first length, a second cutter configured to cut a second electrode sheet unwinded from a second electrode roll into a second electrode portion having a second length, a winder that winds the first electrode portion and the second electrode portion through a separator to form an electrode assembly, and a roll map generation server configured to generate a first electrode roll map and a second electrode roll map. The first electrode roll map may include a first simulated electrode sheet, the first simulated electrode sheet may include a first coordinate value indicating the position of the first electrode sheet as it moves from the first electrode roll to the winder, and a first process event data obtained based on the movement of the first electrode sheet. The second electrode roll map may include a second simulated electrode sheet, which may include a second coordinate value indicating the position of the second electrode sheet as it moves from the second electrode roll to the winder, and a second process event data acquired based on the movement of the second electrode sheet.

[0011] In other respects, the system may include one or more of the following features: The system may further include a first notching device configured to notch a first electrode sheet unwinded from the first electrode roll, and a second notching device configured to notch a second electrode sheet unwinded from the second electrode roll. The system may further include an identification information assigning device that assigns identification information to the electrode assembly based on the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or the first coordinate value of the first electrode sheet and / or the second coordinate value of the second electrode sheet. The identification information assigning device may be coupled with the roll map generation server, and the identification information assigning device or the roll map generation server may be configured to associate the identification information of the electrode assembly with at least one of the first coordinate value, the second coordinate value, the first process event data, or the second process event data.

[0012] In other respects, a method for manufacturing a battery may include one or more of the following features or steps: The method may include cutting a first electrode sheet unwinded from a first electrode roll into a first electrode portion having a first length; cutting a second electrode sheet unwinded from a second electrode roll into a second electrode portion having a second length; winding the first electrode portion, the second electrode portion, and the separator between the first and second electrode portions to form an electrode assembly; and assigning identification information to the electrode assembly based on the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or the position coordinate value of the first electrode sheet and / or the position coordinate value of the second electrode sheet.

[0013] In other respects, the method for manufacturing the battery may include one or more of the following features or steps: The method may further include a step of notching the first electrode sheet and the second electrode sheet to form one or more electrode tabs, prior to the step of cutting the first electrode sheet and the second electrode sheet. The notching of the first electrode sheet may be performed within the range of the first length. The notching of the second electrode sheet may be performed within the range of the second length. The separator may have a third length. The third length may be longer than the first and second lengths. The identification information of the electrode assembly is: 1) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet, 2) Data relating to defects in the first electrode sheet and / or the second electrode sheet, 3) Data regarding defects in the above electrode assembly, 4) Tray identification information of the tray on which the electrode assembly is loaded, 5) Loading position data of the electrode assembly in the tray, and 6) The electrode container in which the electrode assembly is housed may include can identification information.

[0014] The position coordinate values ​​of the first electrode sheet may include at least one of the start coordinate values ​​and end coordinate values ​​of the first length, and the position coordinate values ​​of the second electrode sheet may include at least one of the start coordinate values ​​and end coordinate values ​​of the second length.

[0015] The position coordinate values ​​of the first electrode sheet are included in the first electrode roll map. The positional coordinate values ​​of the second electrode sheet can be included in the second electrode roll map.

[0016] The first electrode roll map may include a first simulated electrode sheet that replicates the first electrode sheet moving from the first electrode roll to the winder. The second electrode roll map may include a second simulated electrode sheet that replicates the second electrode sheet moving from the second electrode roll to the winder. The identification information of the electrode assembly may be further associated with process event data acquired when the first electrode sheet moves from the first electrode roll to the winder and when the second electrode sheet moves from the second electrode roll to the winder. The process event data may include equipment data acquired from one or more process equipment between the first electrode roll and the winder, and between the second electrode roll and the winder, inspection and / or measurement data acquired in one or more processes, and time-series data acquired in one or more processes.

[0017] In other embodiments, one or more non-temporary computer-readable media containing instructions for battery manufacturing can be provided. These instructions may be performed on a processor and may include the following steps:

[0018] The steps include: cutting a first electrode sheet unwinded from a first electrode roll into a first electrode portion having a first length; cutting a second electrode sheet unwinded from a second electrode roll into a second electrode portion having a second length; winding the first electrode portion, the second electrode portion, and the separator between the first and second electrode portions to form an electrode assembly; and assigning identification information to the electrode assembly based on the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or the position coordinate value of the first electrode sheet and / or the position coordinate value of the second electrode sheet.

[0019] In other respects, one or more non-temporary computer-readable media described above may include one or more of the following features or steps:

[0020] Before the step of cutting the first electrode sheet and the second electrode sheet, The step of performing notching on the first electrode sheet and the second electrode sheet to form one or more electrode tabs. The notching of the first electrode sheet is performed within the range of the first length, The notching of the second electrode sheet can be performed within the range of the second length.

[0021] As another embodiment, a battery can be provided. The battery includes a housing, a first electrode including a first indicator corresponding to the first cut count value of the first electrode sheet, a second electrode including a second indicator corresponding to the position coordinate value of the second electrode sheet, and a separator between the first electrode and the second electrode.

[0022] The first electrode, the second electrode, and the separator form the electrode assembly, and the electrode assembly can be accommodated in the housing. The electrode assembly can include a third indicator. The third indicator can include identification information of the electrode assembly. The housing includes a fourth indicator, and the fourth indicator can correspond to the third indicator. The first indicator can be a mark on the surface of the first electrode. The first electrode can include an uncoated portion of the first electrode sheet. The fourth indicator can correspond to the identification information of the housing. The second pattern can include a coated portion of the second electrode sheet. The separator can include a fifth indicator. The fifth indicator can be a mark on the surface of the separator.

[0023] A battery manufacturing system according to an exemplary embodiment of the present disclosure for solving the above problems includes a first cutter that cuts a first electrode sheet unwound from a first electrode roll by a first winding length, a second cutter that cuts a second electrode sheet unwound from a second electrode roll by a second winding length, a winder that winds the first electrode sheet of the first winding length and the second electrode sheet of the second winding length through a separator to manufacture an electrode assembly, and an identification information providing device that provides identification information to the electrode assembly based on at least one of i) a cut count value of the first electrode sheet and / or a cut count value of the second electrode sheet, and ii) a position coordinate value of the first electrode sheet corresponding to the first winding length and / or a position coordinate value of the second electrode sheet corresponding to the second winding length.

[0024] According to an exemplary embodiment, the battery manufacturing system may further include a first notching device that notches a first electrode sheet unwound from the first electrode roll, and a second notching device that notches a second electrode sheet unwound from the second electrode roll.

[0025] According to an exemplary embodiment, the battery manufacturing system further includes a position measuring device that generates a position signal of a first electrode sheet moving from the first electrode roll to the winder and a position signal of a second electrode sheet moving from the second electrode roll to the winder, and coordinate data including the position coordinate value can be obtained based on the position signal.

[0026] According to an exemplary embodiment, the battery manufacturing system may include at least one first electrode inspection and / or measuring device between the first electrode roll and the winder, and at least one second electrode inspection and / or measuring device between the second electrode roll and the winder.

[0027] The identification information assigning device described above may be a process controller that controls each process equipment from the first electrode roll and the second electrode roll to the winder, an identification information management server connected to the process controller in a data communication manner, or a combination of the process controller and the identification information management server.

[0028] The above-mentioned process controller and / or identification information management server can manage process event data acquired when the first electrode sheet moves from the first electrode roll to the winder and when the second electrode sheet moves from the second electrode roll to the winder, in association with the identification information of the electrode assembly.

[0029] According to an exemplary embodiment, the battery manufacturing system may further include a roll map generation server that generates a first electrode roll map, which is a simulated electrode that shows a first coordinate value indicating the position of a first electrode sheet moving from the first electrode roll to the winder in association with process event data acquired by the movement of the first electrode sheet, and a second electrode roll map, which is a simulated electrode that shows a second coordinate value indicating the position of a second electrode sheet moving from the second electrode roll to the winder in association with process event data acquired by the movement of the second electrode sheet.

[0030] The above identification information assigning device is connected to the above role map generation server in a manner that enables data communication, The identification information assigning device or the roll map generation server can associate the identification information of the electrode assembly with at least one of the first coordinate values, second coordinate values, and process event data included in the first roll map and the second roll map.

[0031] A battery manufacturing system according to an exemplary embodiment of the present disclosure may further include: a first cutter for cutting a first electrode sheet unwinded from a first electrode roll by a first winding length; a second cutter for cutting a second electrode sheet unwinded from a second electrode roll by a second winding length; a winder for manufacturing an electrode assembly by winding the first electrode sheet of the first winding length and the second electrode sheet of the second winding length via a separator; a first electrode roll map, which is a simulated electrode, that shows a first coordinate value indicating the position of the first electrode sheet moving from the first electrode roll to the winder in association with process event data acquired by the movement of the first electrode sheet; and a second electrode roll map, which is a simulated electrode, that shows a second coordinate value indicating the position of the second electrode sheet moving from the second electrode roll to the winder in association with process event data acquired by the movement of the second electrode sheet.

[0032] According to an exemplary embodiment, the battery manufacturing system may further include a first notching device for notching a first electrode sheet unwinded from the first electrode roll, and a second notching device for notching a second electrode sheet unwinded from the second electrode roll.

[0033] According to an exemplary embodiment, the battery manufacturing system may include an identification information assigning device that assigns identification information to the electrode assembly based on at least one of the following i) and ii). i) Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet and / or ii) The first coordinate value of the first electrode sheet corresponding to the first winding length and / or the second coordinate value of the second electrode sheet corresponding to the second winding length.

[0034] The above identification information assigning device is connected to the above role map generation server in a manner that enables data communication, The identification information assigning device or the roll map generation server can associate the identification information of the electrode assembly with at least one of the first coordinate values, second coordinate values, and process event data included in the first roll map and the second roll map.

[0035] A method for manufacturing a battery as another embodiment of this disclosure is: The first electrode sheet, unwinded from the first electrode roll, is cut to the first winding length, and the second electrode sheet, unwinded from the second electrode roll, is cut to the second winding length. The steps include manufacturing an electrode assembly by winding a first electrode sheet of the above-mentioned first winding length and a second electrode sheet of the above-mentioned second winding length via a separator, The step of assigning identification information to the electrode assembly based on at least one of the following i) and ii) may be included. i) Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet and / or ii) Position coordinate values ​​of the first electrode sheet corresponding to the first winding length and / or position coordinate values ​​of the second electrode sheet corresponding to the second winding length.

[0036] Before the step of cutting the first electrode sheet and the second electrode sheet, The method further includes the step of performing notching on the first electrode sheet and the second electrode sheet to form electrode tabs, wherein the notched portion of the first electrode sheet may be included within the range of the first winding length, and the notched portion of the second electrode sheet may be included within the range of the second winding length.

[0037] The first electrode sheet having the first winding length and the second electrode sheet having the second winding length can be wound together with a separator having a third winding length to manufacture the electrode assembly.

[0038] The identification information of the electrode assembly described above can be associated with one or more of the following: 1) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet 2) Cut count value of the first electrode sheet and cut count value of the second electrode sheet 3) Position coordinate values ​​of the first electrode sheet corresponding to the first winding length and / or position coordinate values ​​of the second electrode sheet corresponding to the second winding length. 4) Data regarding defects in the first electrode sheet and / or the second electrode sheet. 5) Data regarding defects in the above electrode assembly 6) Tray identification information of the tray on which the electrode assembly is loaded. 7) Data relating to the loading position of the electrode assembly in the tray described above. 8) Can identification information of the electrode can in which the above electrode assembly is housed.

[0039] The position coordinate values ​​of the first electrode sheet include at least one of the start coordinate value and end coordinate value of the first winding length, or The position coordinate values ​​of the second electrode sheet described above may include at least one of the start coordinate values ​​and end coordinate values ​​of the second winding length described above.

[0040] The positional coordinate values ​​of the first electrode sheet and the second electrode sheet are as follows: These could be roll map coordinate values ​​included in the first roll map, which is a simulated electrode that replicates the first electrode sheet moving from the first electrode roll to the winder, and the second roll map, which is a simulated electrode that replicates the first electrode sheet moving from the first electrode roll to the winder.

[0041] The identification information for the electrode assembly is as follows: Process event data acquired when the first electrode sheet moves from the first electrode roll to the winder, and when the second electrode sheet moves from the second electrode roll to the winder, can be further associated with this data.

[0042] The above process event data is, This may include at least one of the following: equipment data acquired at each process equipment from the first electrode roll and the second electrode roll to the winder; process-related inspection and / or measurement data acquired at each process; and time-series data acquired at each process. [Effects of the Invention]

[0043] According to exemplary embodiments of this disclosure, an identification information (ID) can be assigned to an electrode assembly manufactured in a winding process. This prevents a gray area from occurring between the winding process and subsequent processes where the electrode assembly cannot be traced.

[0044] Furthermore, according to exemplary embodiments of this disclosure, coordinate values ​​indicating the position of the electrode being wound in the winding process can be obtained, and these coordinate values ​​can be associated with the identification information. This facilitates quality tracking of the electrodes processed in the winding process and the electrode process preceding the winding process.

[0045] Furthermore, according to exemplary embodiments of this disclosure, for example, identification information of electrode assemblies included in cylindrical or prismatic batteries can be obtained and matched with identification information of workpieces (e.g., electrodes) or semi-finished products or finished products in pre- and post-winding processes. This facilitates quality control and quality tracking throughout the entire battery manufacturing process.

[0046] The effects that can be obtained from the exemplary embodiments of this disclosure are not limited to those mentioned above, and other effects not mentioned above can be clearly derived and understood by a person of ordinary skill in the art to which the exemplary embodiments of this disclosure belong from the following description. That is, unintended effects associated with carrying out the exemplary embodiments of this disclosure can also be derived by a person of ordinary skill in the art from the exemplary embodiments of this disclosure.

[0047] The accompanying drawings illustrate preferred embodiments of the Disclosure and, together with the foregoing disclosure, are intended to provide an additional understanding of the technical features of the Disclosure; therefore, the Disclosure shall not be construed as being limited to the drawings. [Brief explanation of the drawing]

[0048] [Figure 1] An exemplary embodiment of a battery manufacturing system is shown. [Figure 2] An exemplary embodiment of a battery manufacturing system is shown. [Figure 3] This is a schematic diagram showing how electrodes and separators are wound to a predetermined length by a winder. [Figure 4] An exemplary embodiment demonstrates how identification information of an electrode assembly is associated with other information. [Figure 5] An exemplary embodiment of a battery manufacturing system is shown. [Figure 6] This is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment. [Figure 7] This is a flowchart illustrating a battery manufacturing method according to an exemplary embodiment. [Modes for carrying out the invention]

[0049] Preferred embodiments of this disclosure will be described in detail below with reference to the attached drawings. Before that, however, terms and words used herein and in the claims shall not be construed to be limited to their usual or dictionary meanings, but rather to mean and to mean in accordance with the technical idea of ​​this disclosure, based on the principle that an inventor may appropriately define the concept of a term in order to best describe his own invention.

[0050] Therefore, the embodiments described herein and the configurations shown in the drawings represent only one of the most preferred embodiments of the disclosure and do not represent the entirety of the technical ideas of the disclosure. As of the time of filing, there may be a variety of equivalents and modifications that can be substituted for them.

[0051] Furthermore, if it is determined that a specific description of a relevant publicly known configuration or function in this disclosure would obscure the gist of this disclosure, such detailed description will be omitted.

[0052] Since embodiments of this disclosure are provided to explain the disclosure more fully to a person of ordinary skill, the shapes and sizes of components in the drawings may be exaggerated, omitted, or shown schematically for the sake of clarity. Accordingly, the sizes and proportions of each component do not fully reflect their actual sizes and proportions.

[0053] Embodiments or examples described herein as “exemplary” should not be construed as being preferable or advantageous compared to other embodiments or examples, but rather are intended to reflect or indicate that the embodiment is “exemplary.” Since the claims can be embodied in a variety of forms, it should be construed that the claims are not limited to any exemplary embodiment described herein. Exemplary embodiments are provided solely for illustrative purposes. Similarly, a reasonably broad scope is intended for the claims claimed or covered in the claims.

[0054] Throughout the specification and claims, terms may have meanings suggested or implied in context beyond their explicitly stated meanings. Similarly, the phrase “in one embodiment” as used herein does not necessarily refer to the same embodiment, and the phrase “in another embodiment” as used herein does not necessarily refer to another embodiment. For example, the claimed claims are intended to include all or part combinations of exemplary embodiments.

[0055] The terms used herein, when used in conjunction with the detailed descriptions of the specific examples in this disclosure, should be interpreted in the broadest and most reasonable manner. Of course, specific terms could be defined below, but any terms intended to be interpreted in a limited manner will be explicitly and specifically defined in the detailed descriptions. The general descriptions above and the detailed descriptions below are illustrative and illustrative only and do not limit the claimed features.

[0056] In this disclosure, the term “based on” means “at least partially based on.” Ordinal terms such as “first” and “second” may be used to distinguish one component from others among a variety of components, but not intended to limit the components by terminology. The singular form includes the plural form unless otherwise specified in the context. The term “exemplary” is used to mean “an example of” rather than “ideal.” The term “or” is inclusive and means some or all of the items being listed. “Includes,” “contains,” “has,” “has,” or variations thereof may be intended to include non-exclusive inclusion such that a process, method, or article containing the listed components does not necessarily contain the listed components, and may include other components that are not explicitly listed or are specific to such process, method, article, or apparatus. Relative terms such as “substantially” and “generally” are used to indicate a possible ±5% variation in the expressed or understood value.

[0057] Furthermore, throughout the specification, when one component is referred to as “linked” or “combined” with another component, it is not limited to “directly linked” or “directly combined,” but also includes cases where one or more components are placed between them and they are “indirectly linked” or “indirectly combined.” In this disclosure, “and / or” is defined to include both linking and separation options. For example, A and / or B may be interpreted as including both “A and B” and “A or B.”

[0058] Figure 1 shows a battery manufacturing system 10 according to an exemplary embodiment.

[0059] Referring to Figure 1, the battery manufacturing system 10 may include a coating device 11, a roll pressing device 12, a slitting device 13, a winding device 14, an intermediary server (EIF), a server 180, and a display device 190.

[0060] The battery manufacturing system 10 can be configured to manufacture battery cells (e.g., cylindrical battery cells, pouch-type battery cells, prismatic battery cells, etc.) by performing a series of roll-to-roll processes. Electrode sheets unwinded from the input electrode rolls can be processed by one of the following: the die coater of the coating apparatus 11, the pressure roll of the roll pressing apparatus 12, and the slitting knife of the slitting apparatus 13. The processed electrode sheets can then be wound onto the electrode rolls. Thus, the processing by the coating apparatus 11, roll pressing apparatus 12, and slitting apparatus 13 for producing battery electrodes can be called a roll-to-roll process. The winding apparatus 14 can wind together the first electrode sheet (e.g., negative electrode sheet) unwinded from the first electrode roll (e.g., negative electrode roll), the second electrode sheet (e.g., positive electrode sheet) unwinded from the second electrode roll (e.g., positive electrode roll), and the separator sheet unwinded from the separator roll. Therefore, the processing performed by the winding device 14 can also be called a roll-to-roll process.

[0061] The coating apparatus 11 can perform a coating process on an electrode sheet. The coating process can coat the electrode sheet with an electrode slurry. The electrode slurry can contain an active material, a conductive material, a binder, and a solvent. The electrode slurry can be provided by dissolving the active material, conductive material, binder, etc., in a solvent.

[0062] The roll pressing device 12 can perform a roll pressing process on the electrode sheet. In the roll pressing process, the electrode sheet coated with electrode slurry can be passed between pressure rolls. The roll pressing process can flatten the surface of the electrode sheet and improve the bonding force between the active material of the electrode sheet and the current collector.

[0063] The slitting device 13 can perform a slitting process on the electrode sheet. Through the slitting process, the electrode sheet can be separated into multiple electrode sheets.

[0064] The winding device 14 can provide an electrode assembly for a cylindrical battery cell (e.g., a jelly roll type electrode assembly) by winding a positive electrode sheet, a negative electrode sheet, and a separator interposed between the positive and negative electrode sheets, and then separating them after reaching a winding target length.

[0065] An intermediary server (EIF) may be a device for communication between the process controllers of the manufacturing equipment and the server 180. The intermediary server (EIF) and the server 180 may be located at the manufacturing equipment or at a remote location. The process controllers of the coating equipment 11, the roll pressing equipment 12, the slitting equipment 13, and the winding equipment 14 may be coupled to or communicate with the server 180 or other components directly or indirectly via the intermediary server (EIF). For example, each process controller may communicate directly with the server 180. This allows process event data generated in the coating equipment 11, the roll pressing equipment 12, the slitting equipment 13, and the winding equipment 14 to be transmitted to the server 180.

[0066] Server 180 can be configured to generate a roll map containing process event data. The roll map data may include data representing process events and coordinate values ​​matched to the above data. The coordinate values ​​may indicate positions on electrodes. This allows the roll map to track the feedback, feedforward, and battery manufacturing processes, as described later. Server 180 can transmit visualization commands VC to display device 190, which can visualize the roll map and display the visualized roll map.

[0067] In one embodiment, the role map can be displayed on a display device including a two-dimensional or three-dimensional graphic interface. For example, the role map can be displayed on one or more mobile or fixed display devices (e.g., a computer monitor, laptop screen, touchscreen, tablet, mobile phone, etc.). Additionally or alternatively, the display device may include a wearable display device (e.g., a head-mounted display) for displaying the role map as virtual reality or augmented reality content on the graphic interface.

[0068] Roll maps can be generated on a lot basis. A lot is a manufacturing unit of a roll-to-roll process, and an example of a lot is an electrode roll separated after achieving the target winding length for each process. Similarly, an example of a lot is an electrode roll loaded into the unwinder for each process. Server 180 can generate and save roll maps for each process (e.g., a coating process, a roll pressing process, or a slitting process).

[0069] Time-series data, structured in a roll map according to the flow of time (i.e., according to the progress of the process), can be associated with coordinate data collected based on the amount of electrode sheet movement (i.e., either consumption or input).

[0070] Battery manufacturing can involve a series of distinct manufacturing processes or steps, where a leading process or step influences a following process or step. In this context, it is difficult to reflect the time-series data of a leading process in a following process if the data is not directly matched with real-world workpieces, intermediate products, and finished products. Hereafter, the correction of a following or subsequent process based on data generated according to the results of a leading or previous process or step will be referred to as feedforward.

[0071] In this disclosure, a workpiece can be defined as an article provided as a result of each process, such as an electrode sheet that has undergone a coating process, a roll pressing process, and a slitting process. An intermediate product can be defined as one of a separator, an electrode, or an assembly thereof cut by a notching process. An intermediate product can be defined as a structure including a housing and an electrode assembly housed within the housing (where the structure may further include an electrolyte). A product can be defined as an article that has been processed by an activation process to be operational as a battery. The above definitions of workpieces, intermediate products, and products relate to one aspect thereof and do not preclude other definitions commonly known in the art.

[0072] Since process events generally occur as a process or step progresses, process event data can include time-series data. For example, a process controller for each process or step can control the overall flow of each process. Therefore, it is possible to capture events that occur due to the temporal flow of the process, or the point in time when the data was generated. That is, process event data can include a value representing the event and a time value matched to it. Thus, process event data can include time-series data captured at each process or step.

[0073] Furthermore, process event data may include equipment data acquired at each process equipment. Equipment data can be acquired from each process controller that controls each process. Process controllers may be control devices used for maintaining, managing, automatically controlling, and monitoring the process system in each sub-process of the electrode process (e.g., coating process, roll pressing process, slitting process), assembly process (e.g., electrode stacking process, winding process), activation process, module / pack process, etc. A process PLC (Programmable Logic Controller) can be used as a process controller.

[0074] Such a process controller can control equipment related to the progress of each process, such as the drive of the motor required for electrode movement and the rotational speed of the motor. Alternatively, it can manage the process parameters required for each process. As example process parameters, in the coating process, it can control the electrode drying temperature and / or electrode temperature, and in the roll pressing process, it can adjust the roll pressing pressure, etc. Therefore, the equipment data can include various process parameter data managed by the process controller in each process.

[0075] Furthermore, process event data may include process-related inspection and / or measurement data acquired at each process. For example, in a coating process, the loading amount of electrode slurry can be measured, or the reference points marked on the electrode can be measured. In a roll pressing process, the electrode thickness after roll pressing can be measured. Additionally, visual inspection equipment (e.g., vision inspection equipment) may be used in processes such as coating, roll pressing, and slitting. Inspection and / or measurement data includes all data inspected or measured by predetermined inspection equipment, measuring equipment, or inspection and measuring equipment at each process. In other words, the above inspection and / or measurement data may include the results of work and / or tests performed at each process.

[0076] Such process event data can be generated in accordance with the progress of various processes performed on the electrode, and such process event data can be acquired for each individual process.

[0077] For feedforward, time-series data can be associated with the locations of images of real-world workpieces, parts, semi-finished products, and finished products. Here, feedforward may include controlling processing of electrode sheets based on a roll map generated in a previous process. The roll map may be a type of simulated electrode that replicates a moving real electrode (e.g., a real electrode moving between an unwinder and a rewinder). The roll map can associate information or data about the time-series data with coordinate data that includes coordinate values ​​indicating the locations of images of real-world workpieces, parts, semi-finished products, and finished products. Based on the coordinate data, the roll map can provide a matching between the time-series data and real-world workpieces, parts, semi-finished products, and finished products. Thus, the generation of roll maps and feedforward based on roll maps can improve productivity and quality by quantifying and objectifying aspects of the process that were previously dependent on the arbitrary actions of the worker.

[0078] Furthermore, roll maps from preceding lots can be used to improve processes for subsequent lots, and this type of operation can be called process feedback. Process feedback using roll maps can include identifying process conditions and parameters that cause problems and defects based on the data contained in the roll maps.

[0079] Furthermore, by generating roll maps cumulatively for workpieces, parts, semi-finished products, and finished products in unit processes, it enables the tracking of process history for shipped products (e.g., battery cells, battery modules, or battery packs). In one example, a battery cell may include identification information (ID) assigned to the electrode assembly or case. The ID may include lot numbers and coordinate information for the electrodes and separators contained in the battery cell. In other words, the ID can be associated with a roll map of the electrodes and separators contained in the battery cell. This allows for the retrieval of historical data for the manufacture of a battery cell based on the ID if an event such as a quality issue occurs in a battery cell that has already been shipped. In one embodiment, the roll map may be displayed on a display device including a two-dimensional or three-dimensional graphic interface. In one embodiment, the roll map may include various data collected during the manufacture of electrodes and / or batteries. Additionally or alternatively, the roll map may include data relating to the electrode manufacturing process according to this disclosure. For example, the data may be displayed on the display device discussed above, or stored on one or more servers (e.g., server 180) for processing and tracking.

[0080] According to an exemplary embodiment, the server 180 may be a data processing system that supports various activities necessary to manage the manufacturing of batteries, such as work schedule management, work instructions, quality control, and work performance aggregation. The server 180 may be, for example, a Manufacturing Execution System (MES). The server 180 may be configured to input, process, output, and communicate data necessary for electrode manufacturing, such as coating processes, pressing processes, and manufacturing processes.

[0081] According to another exemplary embodiment, the server 180 may be configured to store and process raw measurement data. The server 180 can manage the quality of electrode sheet processing by continuously monitoring the processing of electrode sheets based on the measurement data. According to an exemplary embodiment, the server 180 may be a Statistical Process Controller (SPC). By collecting and analyzing manufacturing data in near real time, the server 180 can identify problem conditions in a timely manner and provide alarms to operators before potential problems occur.

[0082] According to other exemplary embodiments, the server 180 may be, for example, a data warehouse that can store role maps for extended periods based on the product's quality assurance period.

[0083] According to other exemplary embodiments, the server 180 may perform all of the functions of the MES, SPC, and data warehouse, or it may be provided separately from the MES, SPC, and data warehouse to generate role maps.

[0084] Referring to Figure 1, the electrode assembly manufactured by winding in the winding apparatus 14 can be transported and housed in a case or housing such as a can. The can or housing may include any adapted pattern for housing the electrode assembly of this disclosure. Thus, the can and housing can be used interchangeably in this disclosure. The can may be assigned a can ID, which is separate can identification information, and this can ID may be a type of battery cell ID. Thus, historical data of the manufacturing of the battery cell can be retrieved based on the can ID.

[0085] Incidentally, before the electrode assemblies are placed in cans, due to the logistics flow, multiple electrode assemblies may be placed in trays for storage, or the trays may be transported and transferred to the cans. If multiple electrode assemblies become mixed up during this process, even if can IDs are assigned during the can manufacturing process, it may be difficult to determine what materials (electrodes, separators, etc.) each electrode assembly placed in the can is made of. In other words, a gray zone occurs between the winding process and the can manufacturing process where it is not possible to track the electrode assemblies. As a result, even if roll maps are generated at each sub-process before the winding process and process event data and coordinate data related to the electrodes at each sub-process are secured, it becomes impossible to track this data in association with the electrodes and other components of the electrode assemblies at multiple processes between each sub-process and the can manufacturing process.

[0086] According to the technical concept of this disclosure, in order to prevent the aforementioned gray area from occurring, identification information (ID) can be assigned to electrode assemblies manufactured in the winding process. The identification information can be assigned based on the cut count value and / or coordinate value of the electrodes included in the electrode assembly.

[0087] According to another technical idea of ​​this disclosure, it is possible to generate a roll map that simulates the movement of electrodes moved in a winding process.

[0088] In one embodiment, the winding process may mean the process in which the electrodes and separators are wound in a winder. In one embodiment, the winding process may include all processes in which the electrode sheets and separator sheets, unwinded on the electrode rolls and separator rolls, are processed and cut and then wound in a winder. That is, any of the unwinding process, (notching) processing process, inspection and / or measurement process, cutting process, and winding process in the winder may be included in the winding process. In one embodiment, a roll map may be generated to represent or simulate the movement of the electrodes during the winding process.

[0089] The roll map for the winding process can include coordinate data containing the coordinate values ​​of each electrode moving during the winding process, as well as process event data. Identification information for the electrode assembly can be associated with the electrode coordinate data and process event data. The coordinate data and process event data of each electrode introduced into the winding process can be compared with the roll map data (coordinate data, process event data) generated in each sub-process prior to the winding process. In other words, since coordinate data is assigned to the electrodes of the preceding sub-processes and the electrodes of the subsequent winding process, it is possible to retrieve historical data related to the quality changes of electrodes that have gone through preceding and succeeding processes, as well as manufacturing data, using this coordinate data.

[0090] Furthermore, the identification information of the electrode assembly can be associated with data acquired in subsequent processes after the winding process (e.g., data related to the tray on which the electrode assembly is loaded, can ID, etc.). Therefore, since data associated with each electrode assembly can be retrieved between the winding process and subsequent processes based on the identification information, quality can be easily tracked between the winding process and subsequent processes.

[0091] In conclusion, the identification information of the electrode assembly allows for the tracking of all historical data related to electrode quality and manufacturing across the winding process and all its preceding and succeeding processes. This enables efficient process and quality control throughout the entire battery manufacturing process, resulting in more reliable battery production.

[0092] Figure 2 shows a battery manufacturing system or apparatus according to an exemplary embodiment, Figure 3 is a schematic diagram showing electrodes and separators being wound to a predetermined length by a winder, and Figure 4 shows an example in an exemplary embodiment where identification information of an electrode assembly is associated with other information.

[0093] Referring to Figure 2, the battery manufacturing system or battery manufacturing system 100 may include unwinders UWN, UWP, UWS1, UWS2, position measuring instruments 111N, 111P, 112N, 112P, first notching device 120N, second notching device 120P, various inspection and / or measuring instruments 130, first cutter 140N, second cutter 140P, winder 150, identification information management server 160, roll map PLC (Programmable Logic Controller) 171, process controller 172, and server 180.

[0094] The first electrode roll ERN can be loaded into an unwinder 111N. The unwinder 111N can be configured to unwind, for example, a first electrode sheet ESN, which is a negative electrode sheet, from the first electrode roll ERN.

[0095] The second electrode roll ERP can be loaded into the unwinder 111P. The unwinder 111P can be configured to unwind, for example, the second electrode sheet ESP, which is the positive electrode sheet, from the second electrode roll ERP.

[0096] Separator Roll SR1 can be loaded into Unwinder UWS1, and Separator Roll SR2 can be loaded into Unwinder UWS2. Each Unwinder UWS1 and UWS2 can be configured to unwind each Separator Sheet SS1 and SS2.

[0097] The first electrode sheet ESN, the second electrode sheet ESP, and the two separator sheets SS1 and SS2 can be guided by a guide roll G (not shown in Figure 2 for clarity) to move toward the first cutter 140N, the second cutter 140P, and the winder 150.

[0098] In Figure 2, the guide roll G is not shown for illustrative purposes, and the movement paths of each sheet are also simplified. However, a more practical movement path for each sheet can be shown as in the embodiment of Figure 5.

[0099] Multiple guide rolls G can be provided to correspond to the movement path of each sheet. Each sheet guided by each guide roll G can merge in front of the first cutter 140N and the second cutter 140P.

[0100] The first position measuring instrument 111N can be configured to sense the amount of the first electrode sheet ESN unwinded from the first electrode roll ERN by the unwinder UWN. This allows the first position measuring instrument 111N to generate an input amount signal UWASN indicating the length of the first electrode sheet ESN unwinded by the unwinder UWN. The first position measuring instrument 111N can be configured to transmit the input amount signal UWASN to the roll map PLC 171.

[0101] A second position measuring instrument 112N can be installed near the guide roll where each sheet converges. The second position measuring instrument 112N can be configured to sense the amount of the first electrode sheet ESN being moved to the winder 150. This allows the second position measuring instrument 112N to be configured to generate an exhaustion signal WASN indicating the length of the first electrode sheet ESN that is cut by the first cutter 140N and wound in the winder 150. The second position measuring instrument 112N can be configured to transmit the exhaustion signal WASN to the roll map PLC 171.

[0102] The first position measuring instrument 111P can be configured to sense the amount of the second electrode sheet ESP unwinded from the second electrode roll ERP by the unwinder UWP. This allows the first position measuring instrument 111P to generate an input amount signal UWASP indicating the length of the second electrode sheet ESP unwinded by the unwinder UWP. The first position measuring instrument 111P can be configured to transmit the input amount signal UWASP to the roll map PLC 171.

[0103] A second position measuring instrument 112P can be installed near the guide roll where each sheet converges. The second position measuring instrument 112P can be configured to sense the amount of the second electrode sheet ESP being moved to the winder 150. This allows the second position measuring instrument 112P to generate an exhaustion signal WASP indicating the length of the second electrode sheet ESP that is cut by the second cutter 140P and wound in the winder 150. The second position measuring instrument 112P can be configured to transmit the exhaustion signal WASP to the roll map PLC 171.

[0104] For example, the first and second position measuring instruments (e.g., 111N, 111P, 112N, 112P) may be rotary encoders capable of representing the position signal of an electrode moving in accordance with the amount of rotation of the unwinder, guide roll, or winder as an encoder value. Alternatively, they may be linear encoders that represent the position signal of an electrode corresponding to the displacement of the electrode as an encoder value. The encoders may be configured to be in contact with or non-contact with the electrode.

[0105] According to one embodiment, the battery manufacturing system 100 of this embodiment may include an additional position measuring instrument capable of sensing the position signals of each separator sheet SS1, SS2.

[0106] Each of the first electrode roll ERN and the second electrode roll ERP described above may be one of the electrode rolls that have been processed in a previous sub-process (e.g., a coating process, a roll pressing process, or a slitting process) and then transferred to the battery manufacturing system or battery manufacturing system 100. The electrode roll may include defective tags (NG tags) attached in a previous sub-process (e.g., a roll pressing process or a slitting process). Instead of the defective tags, markings for defective areas may be made directly on the electrode. Thus, the electrode roll may include defective indicators or defective markings marked on the electrode in a previous sub-process. The electrode roll may also include reference points marked on the electrode at predetermined intervals in a previous sub-process (e.g., a coating process). Additionally or alternatively, the markings or indicators may be virtual indicators or markings. That is, the roll map of this disclosure may include data relating to markings or indicators that can correspond to one or more features of the electrode or electrode sheet. For example, the markings or indicators can correspond to the coordinate positions of the electrode sheet, but are not limited to this; they can also correspond to other characteristics of the electrode, such as defects, size, pattern, and reference points. Furthermore, the electrode roll may include connecting sections that link electrode portions that have been cut due to breakage or defect removal in previous sub-processes, between sub-processes, or after a sub-process. For example, connecting tape (adhesive tape) may be attached to these connecting sections. By detecting the positions of the reference points, connecting sections, and defect marking sections (including defect tags) of each electrode unwound from each electrode roll by the unwinder in the winding process, the length changes of each electrode sheet in previous sub-processes can be understood. These length changes can be represented on the roll map as changes in coordinate values. The server 180 stores the roll map information for each previous sub-process. Therefore, process control in the winding process can be efficiently performed using the roll map information for each sub-process.Furthermore, as described later, events occurring on the electrode sheet moving during the winding process can be detected. If the positions of the reference point, connecting portion, and defective marking portion change due to these events, the positions of the reference point, connecting portion, and defective marking portion can be displayed on the winding process roll map, which includes process event information for the winding process. In addition, by comparing the winding process roll map with the roll maps of previous sub-processes, changes on the electrode that occurred between multiple processes can be understood.

[0107] The first electrode sheet ESN, unwinded from the first electrode roll ERN, can be notched by the first notching device 120N before being wound. Similarly, the first electrode sheet ESN, unwinded from the second electrode roll ERP, can be notched by the second notching device 120P before being wound.

[0108] The notching process can be defined as a process or step in the assembly process in which an electrode sheet (positive electrode sheet, negative electrode sheet) is processed to manufacture electrode tabs (positive electrode tab, negative electrode tab). In the notching process, the uncoated portion of the electrode sheet that is not coated with electrode material can be cut off, and the remaining uncoated portion can become the electrode tab.

[0109] When manufacturing a jelly roll-shaped electrode assembly by winding multiple electrodes and separators, the notching and winding processes can be performed on a continuous electrode transfer path.

[0110] Referring to Figure 3, it is shown that the first electrode sheet ESN has been notched, and a notched portion ESN_n has been formed on the uncoated portion of the first electrode sheet. It is also shown that the second electrode sheet ESP has been notched, and a notched portion ESP_n has been formed on the uncoated portion of the second electrode sheet.

[0111] After notching, the first electrode sheet can be cut to a first winding length L1 and then wound in a winder. The notched portion ESN_n of the first electrode sheet can be located within the first winding length L1. That is, the first electrode sheet ESN of the first winding length L1 may be longer than the notched portion ESN_n and may include electrode sheet portions that extend on both sides of the notched portion.

[0112] Furthermore, the notched portion ESP_n of the second electrode sheet ESP can also be provided within the second winding length L2. That is, the second electrode sheet within the second winding length L2 may be longer than the notched portion ESP_n and may have electrode sheet portions that extend on both sides of the notched portion.

[0113] The separator sheets SS1 and SS2 interposed between the first electrode sheet ESN and the second electrode sheet ESP can be wound to a third winding length L3. For electrical safety or insulation when wound in a jelly roll, the first to third winding lengths can be determined to be different. For example, the winding length of the separator located between the first and second electrode sheets (third winding length L3) can be made longer than the winding lengths of the other electrode sheets. This ensures that when the separator with the third winding length L3 is wound into a cylindrical shape, the separator is located on the radially outermost part of the jelly roll electrode assembly, preventing direct contact between the first and second electrode sheets and thus preventing an electrical short circuit. Alternatively, for example, the winding length of the first electrode sheet, which is the negative electrode (first winding length L1), can be made longer than the winding length of the second electrode sheet, which is the positive electrode (second winding length L2).

[0114] Referring again to Figure 2, the first notching device 120N and the second notching device 120P perform notching on each electrode sheet corresponding to each winding length. The notching specifications, such as the length of the notched area formed within the winding length range, the size of the electrode tabs, and the spacing between the electrode tabs, may be predetermined according to the type and specifications of the battery. The first to third winding lengths may also be predetermined according to the type and specifications of the battery. Information regarding the notching specifications and winding lengths can be stored in the process controller 172 or a product production-related server (e.g., MES) connected to the process controller 172. Therefore, the process controller 172 can perform notching on each electrode sheet according to the set specifications by controlling the first notching device 120N and the second notching device 120P based on the above information.

[0115] Each notched electrode sheet is inspected and / or measured by various inspection and / or measuring instruments, and then cut to the respective winding length using a cutter.

[0116] The first electrode sheet ESN, the second electrode sheet ESP, and the separator sheets SS1 and SS2 can each be guided by their corresponding guide rolls and converge at points in front of the first cutter 140N and the second cutter 140P.

[0117] The process controller 172 can control the first cutter 140N to cut the first electrode sheet ESN by a first winding length L1. The process controller 172 can also control the second cutter 140P to cut the second electrode sheet ESP by a second winding length L2. The process controller 172 can control each cutter based on information regarding the first winding length L1, the second winding length L2, and the third winding length L3. The process controller 172 may include data or information regarding the overall electrode transfer path (distance) from the first electrode sheet ESN released from the first electrode roll ERN to the first cutter 140N, the overall electrode transfer path (distance) from the second electrode sheet ESP released from the second electrode roll ERP to the second cutter, and the separator transfer path (distance) from each separator roll to the cutter. For example, the process controller 172 can receive signals UWASN and UWNASP from the position measuring instrument regarding the amount of each electrode sheet undone (feed-in amount) and signals WASN and WASP regarding the amount reaching the first cutter 140N and the second cutter 140P (exhaustion amount). Based on these signals, the process controller 172 can determine the total transport distance of each electrode. Furthermore, based on information regarding each winding length and notching specifications, the process controller 172 can determine how many electrode sheet portions corresponding to each winding length are within the total transport distance of each electrode. Therefore, the process controller 172 can control each notching device to perform notching on the electrode sheet corresponding to each winding length by a predetermined length. It can also control each cutter to cut each electrode sheet to the corresponding winding length.

[0118] Each first electrode sheet ESN portion of the cut first winding length L1 can be moved to the winder 150 together with the separator sheet SS1. Similarly, each second electrode sheet ESP portion of the cut second winding length L2 can be moved to the winder 150 together with the separator sheet SS2. Each separator sheet can be moved to the winder 150 without being pre-cut so that it can support the moving electrode sheets.

[0119] The winder 150 can be configured to wind together a first electrode sheet ESN, a separator sheet SS1, a second electrode sheet ESP, and a separator sheet SS2. This can provide an electrode assembly EA for a battery (e.g., a cylindrical battery, a pouch battery, a prismatic battery, or other suitable type of battery cell configured to house the wound electrode assembly). The electrode assembly EA may include a winding structure of the first electrode sheet ESN, a separator sheet SS1, a second electrode sheet ESP, and a separator sheet SS2. The first electrode sheet ESN and the second electrode sheet ESP can be electrically isolated by the separator sheets SS1 and SS2. This can prevent short circuits between the first electrode sheet ESN and the second electrode sheet ESP despite the winding of each sheet. The separator sheets can be cut after winding by a separator cutter (not shown) for clarity of explanation.

[0120] In the above-described embodiment, the first electrode sheet ESN and the second electrode sheet ESP were first cut and then wound together with the separator sheet.

[0121] However, after winding each electrode sheet and separator, it is also possible to cut the ends of the winded electrode assembly and the connections between each electrode sheet, and the connections between the ends and the separators. In one embodiment, after the separator sheet SS2, the second electrode sheet ESP, the separator sheet SS1, and the first electrode sheet ESN have each reached their target winding length, the corresponding cutters can cut the separator sheet SS2, the second electrode sheet ESP, the separator sheet SS1, and the first electrode sheet ESN in order to separate the electrode assembly EA.

[0122] The manufactured electrode assemblies EA can be discharged outside the manufacturing or assembly line. The discharged electrode assemblies EA can be inspected by a separate inspection device 135 and then transferred to trays T by a predetermined transfer device TM. Electrode assemblies EA determined to be defective by the inspection device 135 can be discharged to a defective assembly storage port S2 and stored there.

[0123] An electrode assembly EA determined to be normal or sufficient (for example, by meeting a preset value or threshold) can be grasped by a gripper TMH of a transfer device TM and transferred to a tray T. In one embodiment, "normal or sufficient" can be defined as data that meets or falls within one or more predetermined manufacturing tolerance characteristics or ranges of the electrode manufacturing process according to the disclosure. Conversely, excessive or insufficient data can be defined as data that does not meet or falls outside one or more predetermined manufacturing tolerance characteristics or ranges of the electrode manufacturing tolerance.

[0124] In one embodiment, tray T may include storage locations for multiple electrode assemblies EA. Each electrode assembly EA may be stored sequentially according to a transport order, for example, or according to a separate loading algorithm, at a specific location within tray T. For example, if there are multiple rows X1, X2, ..., Xn and columns Y1, Y2, ..., Yn within tray T, the tray loading locations for the electrode assemblies EA may be specified as ordered pairs of matrices represented by the intersections of the rows and columns.

[0125] In one embodiment, when an electrode sheet ESN or ESP containing defects is wound with a separator sheet, a defective electrode assembly may be formed and discarded into the defective assembly storage port S2. In this case, the normal electrode sheet and separator sheet that are wound with the defective electrode sheet may also be wasted.

[0126] Therefore, when a defective electrode sheet approaches the winder 150, the process controller 172 can generate a signal to control the unwinder to interrupt the unwinding of other non-defective electrode sheets. This allows only the defective electrode sheet portion to be wound by the winder 150 without winding the normal electrode sheets. The wound portion of the defective electrode sheet can then be discharged to the defective storage port S1. This prevents waste of normal electrodes and materials such as separators.

[0127] Defects in electrode sheets ESN and ESP can be identified by defect tags or markings attached to the actual electrodes in a sub-process prior to the winding process (e.g., the roll pressing or slitting process). Alternatively, if a connecting tape connecting broken portions is detected during the winding process, the electrode sheet portion equipped with the connecting tape can be considered defective. Or, any portion determined to be defective by inspection and / or measuring instruments during the winding process can be considered a defective electrode.

[0128] The first electrode roll ERN and the second electrode roll ERP, which are loaded into the unwinder, constitute a lot. When each electrode roll is loaded into the unwinder, the identification information (e.g., lot number) of each lot can be read by a predetermined reader (e.g., a BCR reader). Alternatively, the lot identification information of the electrode roll can be entered into the equipment or system by manual input by an operator. Alternatively, a code or indicator showing lot identification information can be included in a reference point, defect marking, etc., which can be marked on a suitable surface of the electrode or electrode roll.

[0129] This makes it possible to obtain lot identification information for the first electrode sheet ESN and the second electrode sheet ESP that are fed into the winding process. Furthermore, based on the lot identification information, it is possible to obtain past manufacturing history information for the first and second electrode sheets, such as roll map information.

[0130] In one embodiment, identification information can be assigned to electrodes manufactured from a first electrode sheet ESN and electrodes manufactured from a second electrode sheet ESP for forming an electrode assembly according to the present disclosure. For example, according to embodiments of the present disclosure, a cut count value and / or coordinate position value associated with the first electrode sheet ESN can be assigned (assigned) to the electrodes from the first electrode sheet ESN. In one embodiment, the assigned ID may be a virtual ID or a physical ID. A physical ID may be provided as a mark on the electrode if sufficient space (e.g., an uncoated portion) is provided on the electrode. Similarly, according to embodiments of the present disclosure, a cut count value and / or coordinate position value associated with the second electrode sheet ESP can be assigned to the electrodes from the second electrode sheet ESP. In one embodiment, the assigned ID may be a virtual ID or a physical ID. A physical ID may be provided as a mark on the electrode if sufficient space (e.g., an uncoated portion) is provided on the electrode.

[0131] In one embodiment, an identifier can be assigned to a separator provided by the Disclosure for forming an electrode assembly. For example, according to embodiments of the Disclosure, a coordinate value and / or cut count value associated with the separator can be assigned to the separator. In one embodiment, the assigned ID may be a virtual ID or a physical ID. A physical ID may be provided to the separator as a mark, provided that sufficient space is provided for the separator.

[0132] For example, as described above, the completed electrode assembly EA is loaded onto a tray, so the identification information of the tray T on which it is loaded (e.g., tray ID) can be associated with the electrode assembly EA on which it is loaded. Furthermore, the loading position of the electrode assembly on the tray can be determined.

[0133] However, as mentioned above, if multiple electrode assemblies EA become mixed up during the process of being placed in a tray due to the logistics flow, even if a can ID is assigned during the can manufacturing process, it becomes impossible to identify which materials (electrodes, separators, etc.) make up the electrode assembly EA placed in the can or housing. For this reason, even if manufacturing history information such as roll map information is available for the electrodes in each sub-process before the winding process, it becomes difficult to associate it with the manufacturing history information of the electrodes contained in the electrode assembly EA loaded in the tray T, can, or housing.

[0134] To overcome these difficulties, the battery device of the exemplary embodiment may include an identification information assigning device for assigning identification information to the electrode assembly EA.

[0135] The identification information of an electrode assembly EA can be associated with information that can identify the electrodes included in the electrode assembly EA. In the winding process, multiple electrode sheet portions can be notched, cut, and wound. Therefore, the identification information of the electrode assembly EA can be assigned based on information that can identify the first electrode sheet portion with a first winding length L1 and the second electrode sheet portion with a second winding length L2.

[0136] According to an exemplary embodiment, the identification information of the electrode assembly EA can be assigned based on at least one of the values ​​i) and ii) below.

[0137] i) The cut count value of the first electrode sheet ESN and / or the cut count value of the second electrode sheet ESP, and / or ii) Position coordinate values ​​of the first electrode sheet ESN corresponding to the first winding length L1 and / or the position coordinate values ​​of the second electrode sheet ESP corresponding to the second winding length L2.

[0138] The cut count values ​​(e.g., cutting order) of the first electrode sheet and the cut count value of the second electrode sheet, respectively, cut by the first cutter 140N and the second cutter 140P, can be used to identify the portions of the first electrode sheet and the second electrode sheet included in the electrode assembly EA.

[0139] The cut count values ​​of the first electrode sheet cut by the first cutter 140N and the second electrode sheet cut by the second cutter 140P are transmitted to the process controller 172. Since the first winding length L1 and the second winding length L2 may differ, the cut count values ​​of each electrode sheet may differ. In addition, it is possible that only the defective portion of the electrode sheet is selectively ejected, and the normal electrode sheet is not ejected. Therefore, the cut count value of the first electrode sheet ESN and the cut count value of the second electrode sheet ESP may not match.

[0140] The first cutter 140N and the second cutter 140P described above may include a cut counter (not shown) equipped with, for example, a trigger board (not shown) for calculating the cut count value. The trigger board can generate cut count information based on each winding length (first winding length or second winding length). The trigger board can increment the count value for each winding length of each received electrode sheet. The trigger board can increment the BCD (Binary Coded Decimal) code by 1 each time the count value increases. The trigger board can convert the generated cut count values ​​for each electrode sheet into BCD code form and transmit them to the process controller.

[0141] The process controller 172 can assign identification information (ID) to the electrode assembly EA wound onto the first and second electrode sheets, based on the received cut count values ​​of the first electrode sheet ESN and the second electrode sheet ESP. In this case, the ID of the electrode assembly EA can also be assigned by physically marking the electrode assembly. However, based on the algorithm described above, the process controller 172 may assign a virtual ID to the electrode assembly EA.

[0142] Since the process controller 172 can communicate data with the first cutter and the second cutter, it can assign an ID to the electrode assembly EA based on the cut count values ​​of the first electrode sheet and the second electrode sheet described above. In other words, the process controller 172 can function as an identification information assigning device.

[0143] However, the process controller 172 is for controlling the unwinder, notching device, cutter, and winder. Therefore, if the process controller 172 is also given the function of calculating and issuing IDs for assigning IDs to electrode assemblies EA, it may be overloaded. In this case, there is a risk that the control speed of the process controller 172 may slow down. To prevent delays, a dedicated server for assigning and managing identification information can be added. Referring to Figure 2, an identification information management server 160 is provided which is data-communicatively connected to the process controller 172. The identification information management server 160 may be, for example, an ECS (Edge Computer System) and / or an EDC (Equipment Data Collection) server.

[0144] For example, the EDC server can receive cut count values ​​for the first and second electrode sheets from the process controller 172 and issue a virtual ID to the corresponding electrode assembly EA. In this case, the device that assigns identification information to the electrode assembly may be the identification information management server 160.

[0145] Alternatively, the entire combination of the process controller 172 and the identification information management server 160 (see the dotted box in Figure 2) can be used as an identification information assignment device. In one embodiment, the ID of the electrode assembly EA can be physically displayed and assigned to the electrode assembly. However, the ID of the electrode assembly EA may be a virtual ID to which the integrated controller 170 virtually assigns identification information.

[0146] The process controller 172 and / or the identification information management server 160 can assign identification information to the electrode assembly based on the position coordinate values ​​of the first electrode sheet ESN corresponding to the first winding length L1 and the position coordinate values ​​of the second electrode sheet ESP corresponding to the second winding length L2.

[0147] As described above, the battery manufacturing system 100 of this disclosure includes a position measuring instrument that generates a position signal for a first electrode sheet moving from a first electrode roll to the winder, and a position signal for a second electrode sheet moving from a second electrode roll to the winder. Based on the position signals, coordinate data including the position coordinate values ​​can be acquired.

[0148] Specifically, based on the encoder values, which are the input amount signals UWASN and UWASP, of the first position measuring instruments 111N and 111P, the position coordinate values ​​of the first electrode sheet portion corresponding to the first winding length L1 and the second electrode sheet portion corresponding to the second winding length L2 can be obtained, respectively.

[0149] Alternatively, based on the encoder values, which are the exhaustion signals WASN and WASP, of the second position measuring instruments 112N and 112P, the position coordinate values ​​of the first electrode sheet portion corresponding to the first winding length L1 and the second electrode sheet portion corresponding to the second winding length L2 can be obtained, respectively.

[0150] The position coordinate values ​​of the first electrode sheet ESN may include at least one of the start and end coordinate values ​​of the first winding length L1. Furthermore, the position coordinate values ​​of the second electrode sheet ESP may include at least one of the start and end coordinate values ​​of the second winding length L2.

[0151] As a result, the process controller 172 and / or the identification information management server 160 can, for example, associate the start and end coordinate values ​​of the first winding length L1 of the first electrode sheet with the start and end coordinate values ​​of the second winding length L2 of the second electrode sheet, or assign identification information (ID) to the corresponding electrode assembly EA based on these values.

[0152] The process controller 172 controls the first and second position measuring instruments and can be connected to each position measuring instrument for data communication, so that it can acquire coordinate values ​​corresponding to the winding length of the first and second electrode sheets to be cut.

[0153] The position coordinate values ​​of the first and second electrode sheets described above can be obtained by directly applying the encoder values ​​(position signals) of the encoders described above. Alternatively, the position signals can be converted to coordinate values ​​in new units through a predetermined scale conversion. The roll map PLC171, described later, can be configured to collect coordinate data for each electrode sheet based on the position signals.

[0154] In a preferred embodiment, an ID can be assigned to the electrode assembly EA based on both the positional coordinates and cut count values ​​of the first electrode sheet ESN and the second electrode sheet ESP that are wound onto the electrode assembly EA.

[0155] Once the ID of electrode assembly EA is determined, the cut count value and coordinate values ​​of the electrodes contained in that electrode assembly are identified. Based on these cut count values ​​and coordinate values, the manufacturing history of each sub-process before the winding process can be tracked. Furthermore, based on the ID of electrode assembly EA, the electrode assembly is inspected for defects, transferred, loaded onto trays, and placed in cans. Therefore, the manufacturing history of processes after winder 150 can also be easily tracked based on the identification information of electrode assembly EA.

[0156] In one embodiment, the process controller 172 and / or the identification information management server 160 can manage the identification information of the electrode assembly EA in association with the process event data of each electrode.

[0157] According to an exemplary embodiment, the battery manufacturing system 100 may further include a rollmap PLC 171.

[0158] The roll map PLC171 can be configured to collect coordinate data CD of electrode sheets ESP and ESP based on the input amount signals UWASN and UWASP and the exhaust amount signals WASN and WASP of electrode sheets ESN and ESP.

[0159] As an example, the rollmap PLC171 can determine the travel distance of electrode sheets ESN,ESP based on the input signal UWASN,UWASP of electrode sheets ESN,ESP. This allows the rollmap PLC171 to be configured to determine the position within electrode sheets ESN,ESP of the portion of electrode sheets ESN,ESP that is unwinded by the unwinder UWN,UWP at each point in time when an event occurs in the electrode sheets ESN,ESP. The above events may include inspection of the electrode sheets by inspection and / or measuring instruments, detection of reference points marked on the electrode sheets, detection of NG tags, completion of electrode assembly EA, and discarding of electrodes or electrode assembly EA containing defects.

[0160] As another example, the roll map PLC171 can determine the travel distance of electrode sheets ESN,ESP based on the exhaustion signals WASN,WASP of the electrode sheets ESN,ESP. This allows the roll map PLC171 to be configured to determine the position within the electrode sheets ESN,ESP of the portion of the electrode sheets being wound by the winder 150 at each point in time when an event occurs in the electrode sheets ESN,ESP. As yet another example, the roll map PLC171 can also determine the travel distance of the electrode sheets based on the exhaustion signal and the input signal, respectively.

[0161] The coordinate data can include coordinate values ​​that match each part of the electrode sheets ESP and ESN. That is, each of any points on the electrode sheets ESP and ESN can be matched with a coordinate value. The above coordinate values ​​may be, but are not limited to, one-dimensional quantities in the direction of travel of the electrode sheets ESP and ESN. The above coordinate values ​​may also be two-dimensional quantities in the direction of travel and the Y direction, which is the lateral direction of the electrode sheets ESP and ESN.

[0162] To inspect the first electrode sheet and the second electrode sheet, at least one first electrode inspection and / or measuring instrument is provided between the first electrode roll and the winder, and at least one second electrode inspection and / or measuring instrument is provided between the second electrode roll and the winder.

[0163] For the sake of explanation, Figure 2 shows only one inspection and / or measuring instrument 130, but such inspection and / or measuring instruments may be provided for each electrode sheet. According to an exemplary embodiment, the inspection and / or measuring instrument 130 may be a vision inspector. Each inspection and / or measuring instrument 130 may include a sensing unit 130A and a processing unit 130B. The sensing unit 130A and the processing unit 130B may be connected by wire or wireless.

[0164] The sensing unit 130A may include imaging devices such as a TDI (Time Delay and Integration) camera or a CMOS (Complementary Metal Oxide Semiconductor) image sensor. The sensing unit 130A may be configured to generate an inspection signal IS indicating the surface of the first electrode sheet ESN or a measurement signal MS measuring dimensions, width, etc. The sensing unit 130A may be configured to transmit the inspection signal IS and the measurement signal MS to the processing unit 130B. The inspection signal IS may include, for example, an image of the electrode sheet ESP, ESN surface.

[0165] The processing unit 130B can be configured to determine a determination value indicating whether or not the electrode sheets ESP and ESN are defective based on the inspection signal IS and / or the measurement signal MS. The processing unit 130B can also be configured to generate a determination value for the electrode sheets ESP and ESN by processing the inspection signal IS and / or the measurement signal MS based on a set algorithm.

[0166] The processing unit 130B can be configured to collect inspection and / or measurement data IMD associated with coordinate values ​​based on the inspection signal IS and / or measurement signal MS and the coordinate data CD. The processing unit 130B can be configured to collect inspection and / or measurement data IMD associated with coordinate values ​​by matching the determination value determined based on the inspection signal IS and / or measurement signal MS with the coordinate value of the coordinate data CD. The processing unit 130B can be configured to transmit the inspection and / or measurement data IMD to the roll map PLC 171.

[0167] To match the judgment value with the coordinate values ​​of the coordinate data CD, the processing unit 130B can be configured to calibrate the coordinate values ​​of the coordinate data CD.

[0168] According to an exemplary embodiment, the determination value of the inspection and / or measurement data IMD may be matched with a single coordinate value indicating the location of the defect, or a start coordinate value indicating the start of the defect and an end coordinate value indicating the end of the defect may be matched.

[0169] The roll map PLC 171 can be configured to transmit inspection and / or measurement data IMD to the process controller 172.

[0170] The process controller 172 may be configured to transmit inspection and / or measurement data IMD to the server 180 via an intermediary server, such as EIF. The server 180 may be configured to generate roll maps for the first electrode roll and the second electrode roll, respectively, which are provided to the winding process, based on the inspection and / or measurement data IMD and additional process event data.

[0171] On the other hand, if the roll map PLC171 is equipped with an additional server of appropriate capacity, it can be configured to generate the roll maps for the first electrode roll and the second electrode roll, respectively.

[0172] In this sense, the role map PLC 171 or server 180, or the assembly of the above-mentioned role map PLC and server 180 (see the dotted box in Figure 2), can serve as the role map generation server of this disclosure.

[0173] The roll map generation server can generate a first electrode roll map, which is a simulated electrode that shows the relationship between a first coordinate value indicating the position of the first electrode sheet moving from the first electrode roll to the winder and process event data acquired by the movement of the first electrode sheet, and a second electrode roll map, which is a simulated electrode that shows the relationship between a second coordinate value indicating the position of the second electrode sheet moving from the second electrode roll to the winder and process event data acquired by the movement of the second electrode sheet.

[0174] As described above, the rollmap PLC171 or the server 180 connected to it can acquire the coordinate values ​​of each electrode sheet where an event occurred, and the corresponding process-related inspection and / or measurement data.

[0175] Furthermore, equipment data acquired at each process equipment from the first electrode roll and the second electrode roll to the winder, as well as time-series data acquired at each process, can be obtained via the process controller 172. The process controller can transmit the equipment data and time-series data to the server 180.

[0176] Such process event data can be matched with the coordinate values ​​(first coordinate value, second coordinate value) of each electrode sheet, and the roll maps of the first electrode and the second electrode can be displayed in association with the above coordinate values ​​and process event data.

[0177] In this way, roll maps can be generated for the first electrode sheet and the second electrode sheet, respectively, even in the winding process from the electrode roll to the winder. The first electrode roll map information (coordinate values, process event data) and the second electrode roll map information (coordinate values, process event data) of the winding process are compared with the roll map information (coordinate values, process event data) of each sub-process before the winding process, making it possible to understand the manufacturing history, changes in electrode length, and changes in quality between the electrode process and the winding process.

[0178] The identification information assigning device described above can be connected to the roll map generation server described above. That is, the identification information assigning device, such as the process controller 172 and / or the identification information management server 160, can be connected indirectly to the roll map PLC 171 via the process controller 172, for example. Alternatively, it can be connected directly to the server 180. This allows the identification information assigning device to manage the identification information of the electrode assembly EA in association with process event data generated when the first electrode sheet and the second electrode sheet move. In particular, the identification information assigning device can associate the identification information of the electrode assembly EA with at least one of the first coordinate values, second coordinate values, and process event data included in the first roll map and the second roll map, based on information from the roll map generation server. The first and second coordinate values, which are the roll map coordinate values, may include the start and end coordinate values ​​of the first winding length L1 and the start and end coordinate values ​​of the second winding length L2.

[0179] As a result, the identification information assigning device, in particular the identification information management server 160, can manage the identification information of the electrode assembly EA in association with one or more of the following:

[0180] 1) Lot identification information of the first electrode sheet and lot identification information of the second electrode sheet 2) Cut count value of the first electrode sheet and cut count value of the second electrode sheet 3) Position coordinate values ​​of the first electrode sheet corresponding to the first winding length and / or position coordinate values ​​of the second electrode sheet corresponding to the second winding length. 4) Data regarding defects in the first electrode sheet and the second electrode sheet described above. 5) Data regarding defects in the above electrode assembly 6) Tray identification information of the tray on which the electrode assembly is loaded. 7) Data relating to the loading position of the electrode assembly in the tray described above. 8) Can identification information of the electrode can in which the above electrode assembly is housed.

[0181] The lot identification information described in 1) above can be obtained, for example, when each electrode roll is loaded into the corresponding unwinder, and can therefore be associated with the identification information of the electrode assembly EA.

[0182] As described above, the identification information of the electrode assembly EA is assigned based on the cut count values ​​of the first electrode sheet and the second electrode sheet and / or the position coordinate values ​​corresponding to the respective winding lengths of the first electrode sheet and the second electrode sheet. Therefore, the identification information of the electrode assembly can be naturally associated with the count values ​​and position coordinate values ​​in 2) and 3) above.

[0183] Furthermore, the presence or absence of defects can be determined from the inspection and / or measurement data IMD acquired by the inspection and / or measuring instrument 130, and such determination values ​​can also be acquired by the identification information management server 160 via the roll map PLC 171. Depending on the type of inspection and / or measuring instrument 130, the type of defect can also be determined. Therefore, data regarding defects in the first electrode sheet and the second electrode sheet can be associated with the identification information of the electrode assembly EA.

[0184] After completion, the electrode assembly EA is inspected by a predetermined inspection device 135, and identification information of a defective electrode assembly EA can be reported to the identification information management server 160. Therefore, the identification information of the electrode assembly EA can be associated with data regarding defects in that electrode assembly.

[0185] As shown in Figure 2, an electrode assembly EA, which has been assigned an identification information (ID), is loaded into a specific loading position on a tray T having a predetermined ID. Data regarding such tray identification information and loading position can also be associated with the identification information of the electrode assembly EA.

[0186] The electrode assemblies EA loaded on tray T can be housed in cylindrical or rectangular cans, and each can may have can identification information such as a can ID. Therefore, the ID of the electrode assembly EA can be associated with the ID of the can.

[0187] Figure 4 shows an example where multiple data are associated through the identification information of the electrode assembly EA (e.g., jelly roll virtual ID or physical ID).

[0188] The lot IDs of the positive and negative electrodes can be associated with the virtual ID of the electrode assembly EA. Furthermore, the cut count values ​​of the positive and negative electrodes included in the electrode assembly can be associated with the virtual ID or physical ID. Additionally, the start and end coordinate values ​​for the negative electrode portion of the first winding length L1, and the start and end coordinate values ​​(roll map coordinate values) for the positive electrode portion of the second winding length L2, corresponding to the cut count values, are associated.

[0189] Furthermore, the defect classification for the electrode portion, the tray ID, and the loading position on the tray are all associated with it.

[0190] Thus, this disclosure allows each electrode assembly EA manufactured by the winder 150 to be assigned unique identification information, and this identification information can be associated with the cut count value, coordinate values, and roll map information (roll map coordinate values, process event data) in the winding process. Furthermore, the process event data matched with the cut count value and coordinate values ​​can be additionally associated with the identification information of the electrode assembly.

[0191] Therefore, according to this disclosure, it is possible to easily track not only the quality within the winding process, but also the quality between the winding process and the processes before and after it.

[0192] Referring to Figures 1 and 2, the components of the process controller 172, processing unit 130B, roll map PLC 171, identification information management server 160, and server 180 can be embodied in hardware, firmware, software, or combinations thereof. For example, the above components can include computing devices such as workstation computers, desktop computers, laptop computers, and tablet computers. The above components can also include any one of the following: a simple controller, a microprocessor, a complex processor such as a CPU or GPU, a processor composed of software, dedicated hardware, and firmware. The above components can be embodied, for example, in a general-purpose computer or application-specific hardware such as a DSP (Digital Signal Process), FPGA (Field Programmable Gate Array), and ASIC (Application Specific Integrated Circuit).

[0193] Server 180 and several other servers relating to this disclosure may include physical servers or cloud servers. Server 180 can provide data and analysis results to operators through a variety of frameworks. The framework may include protocols that support data transmission so that the display device 190 (see Figure 1) can visualize the data through a user interface and provide updated visualizations when new data is calculated by Server 180. The protocols that support the above data transmission may use HTML, Java® Script, and / or JSON.

[0194] Server 180 can transmit visualization commands VC to display device 190, which can visualize the role map and display the visualized role map.

[0195] Server 180 can include a variety of APIs (Application Programming Interfaces) for storing data in databases and other data management tools. These APIs can also be used to retrieve data in databases of various data management systems. These data management systems can provide access to the database, pull data from it, retrieve data, and generate metrics. Here, metrics are tools for visualizing data. Metrics include time-series generated measurements and can be used for application monitoring and generating status alerts.

[0196] According to some embodiments, the operation of the above components can be embodied as instructions stored on a computer or machine-readable medium that can be read and executed by one or more processors. Here, the machine-readable medium may include any mechanism for storing and / or transmitting information in a form readable by a machine (e.g., a computing device). For example, the machine-readable medium may include ROM (Read Only Memory), RAM (Random Access Memory), magnetic disk storage medium, optical storage medium, flash memory, electrical, optical, acoustic or other forms of radio signals (e.g., carrier waves, infrared signals, digital signals, etc.) and any other signals.

[0197] The above components can consist of firmware, software, routines, and instructions for performing the operations described above. For example, the process controller 171, processing unit 130B, roll map PLC 171, identification information management server 160, and server 180 can be instantiated in memory.

[0198] Figure 5 shows a battery manufacturing system according to an exemplary embodiment.

[0199] The battery manufacturing system 100 of this embodiment may also include, like the first embodiment, unwinders UWN, UWP, UWS1, UWS2, position measuring instruments 111N, 111P, 112N, 112P, first notching device 120N, second notching device 120P, various inspection and / or measuring instruments, first cutter 140N, second cutter 140P, winder 150, and identification information management server 160.

[0200] Furthermore, the inspection and defect removal processes of the electrode assemblies wound by the winder 150, as well as the loading process onto trays, are similar to one or more of the embodiments described above in this disclosure.

[0201] In one embodiment, descriptions of parts that are the same as one or more of the above-described embodiments will be omitted, and the description will focus on the parts that are different.

[0202] Figure 5 shows that the first electrode sheet ESN, the second electrode sheet ESP, and the separator sheets SS1 and SS2 are moved towards the cutter and winder by their respective guide rolls G.

[0203] In one embodiment, the sheets can be arranged from top to bottom in the order of separator sheet SS1, first electrode sheet ESN, separator sheet SS2, and second electrode sheet ESP. The arrangement of the sheets may differ slightly from one or more of the above-described embodiments in which separator sheet SS1 is interposed between the first electrode sheet ESN and the second electrode sheet ESP, in that separator sheet SS2 can be interposed between the first electrode sheet ESN and the second electrode sheet ESP.

[0204] In one embodiment, the roll map PLC 171 and the process controller 172 can be configured as a single integrated controller 170.

[0205] The integrated controller 170 can be configured to perform the functions of the roll map PLC 171 and process controller 172 in Figure 2. This allows the integrated PLC 170 to generate coordinate data CD based on one of the input signal UWASN, UWASP and the exhaust signal WASN, WASP, and to acquire and transmit the coordinate data CD and inspection and / or measurement data IMD to the server 180. The integrated controller 170 can also be configured to generate signals for controlling the unwinders UWN, UWP, UWS1, UWS2, the first notching device 120N, the second notching device 120P, the first cutter 140N, the second cutter 140P, and the winder 150.

[0206] Furthermore, the integrated controller 170 is connected to the identification information management server 160 and can provide the identification information management server 160 with information that forms the basis for assigning identification information to the electrode assembly (coordinate values, cut count values). The integrated controller 170 can also associate the identification information of the electrode assembly with coordinate values ​​and process event data. Alternatively, the integrated controller 170 can provide the identification information management server 160 with coordinate values ​​and / or process event data so that the identification information management server 160 can perform the above-mentioned related tasks.

[0207] In one embodiment, an inspection and / or measuring instrument can also be specifically provided between the electrode roll and the winder 150.

[0208] For example, a reference point measuring instrument 131N and a seam sensor 132N for the first electrode sheet ESN, and a reference point measuring instrument 131P and a seam sensor 132P for the second electrode sheet ESP are installed between the electrode roll and the notching device. There is a risk that the reference points marked on the uncoated portion of the electrode sheet may be removed during the subsequent notching process by the notching device. Therefore, the reference point measuring instruments can be installed before the notching device to pre-measure the reference points on the electrode sheet. The reference point measuring instruments 131N and 131P can measure the reference point position of each electrode sheet and compare it with the reference point position in each previous sub-process. In addition, the seam sensors 132N and 132P can detect the seams (i.e., connecting tapes) of each electrode sheet. The position of the connecting tape detected by the seam sensor can also be compared with the position of the connecting tape of the electrode sheet in each previous sub-process. By comparing the reference points and connecting tapes on each electrode sheet before and after the winding process, the changes in the length of the electrode sheet, the break point, etc., can be determined from the comparison results and the positional changes of the reference points and connecting tapes. Based on this, when generating the first roll map for the first electrode sheet and the second roll map for the second electrode sheet in the winding process, the coordinates of the reference points and seam positions on the roll maps can be corrected.

[0209] After the notching devices 120N and 120P, predetermined inspection and / or measuring instruments can be installed at pre-set positions. For example, visual inspection devices 133N and 133P can be installed for each electrode sheet. Alternatively, a dimension / width inspection device can also be installed. Just before the electrode sheets and separators meet, second seam sensors 134N and 134P can be installed to detect the position of the seam ultimately provided in the electrode sheet.

[0210] These inspection and / or measuring instruments are connected to a roll map PLC 171 as shown in Figure 2 or an integrated controller 170 as shown in Figure 3, which can transmit inspection and / or measurement data (IMD) acquired from the inspection and / or measuring instruments. Each inspection and / or measuring instrument may also include a sensing unit and a processing unit, as described above.

[0211] An integrated controller 170 or any controller or processor associated with the battery manufacturing systems 10 and 100 corresponding to embodiments of Figures 1 to 7 may include appropriate logic, networks, interfaces, or code configured to execute instructions stored in one or more memories or any servers (e.g., 160, 180, 181) to perform some or all of the functions or tasks of tracking, monitoring, and manufacturing electrodes, electrode assemblies, and batteries and generating a role map according to embodiments of the present disclosure. For example, an integrated controller 170 or any controller or processor associated with the battery manufacturing systems 10 and 100 may include, but are not limited to, processors, digital signal processors (DSPs), microprocessors, microcontrollers, composite instruction set computing (CISC) processors, application-specific integrated (ASIC) processors, reduced instruction set (RISC) processors, very long instruction word (VLIW) processors, state machines, data processing units, graphics processing units (GPUs), and other processors or control circuits. As an addition or alternative, the integrated controller 170 or all controllers or processors associated with the battery manufacturing systems 10 and 100 may be located in one or more server systems described in the embodiments above to perform some or all of the functions or tasks of tracking, monitoring and manufacturing electrodes, electrode assemblies and batteries and generating roll maps according to embodiments of the present disclosure.

[0212] The role map can be stored in a database or one of the servers described in the embodiments above, or in a separate storage medium. The database or storage medium may be, for example, memory. Multiple memories may be provided as needed. The memory may be volatile or non-volatile. As volatile memory, random access memory (RAM), dynamic RAM (DRAM), static RAM (SRAM), or similar may be used. As non-volatile memory, read-only memory (ROM), programmable ROM (PROM), electrically changeable ROM (EAROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, or similar may be used. The examples of memory listed above are merely illustrative and are not limited to such examples. Alternatively, the storage medium may be a hard disk, CD-ROM, USB memory, solid-state drive (SSD), or similar.

[0213] The role maps and related data stored on the storage medium can be freely used for battery manufacturing, quality control, analysis, and problem tracking.

[0214] Also described is a computer-readable medium on which instruction words configured to enable one or more computers to perform any of the methods described herein are stored. In one embodiment, the computer-readable medium may be non-temporary. The computer-readable medium may include volatile or non-volatile, removable or non-removable media embodied in a method or technique that can store information such as computer-readable instruction words, data structures, program modules, or other data. Generally, the functions of the computing devices described herein are those of Microsoft .NET such as C, C++, COBOL, JAVA®, PHP, Perl, Python, Ruby, HTML, CSS, Java® Script, VBScript, ASPX, and C#. TMComputing logic can be embodied in hardware or software instructions that can be written in a programming language and / or a similar programming language. Computing logic can be written in a programming language that is compiled or interpreted into an executable program. Generally, the functions described herein can be embodied in logic modules or circuits that can be duplicated, merged with other modules, or divided into sub-modules to provide greater processing capabilities. Computing logic can be stored in any type of computer read medium (e.g., non-temporary media such as memory or storage media) or computer storage device, and can be stored and executed in one or more general-purpose or special-purpose processors to generate special-purpose computing devices configured to provide the functions described herein.

[0215] One or more aspects of Figures 1 to 7 may be integrated into or combined with one or more aspects of embodiments of the present disclosure. Furthermore, detailed disclosures of similar or identical elements already described may be omitted for brevity. However, such omissions are not denials or rejections, but rather exclude the extent to which similar or identical elements already described do not coincide with the express disclosures herein, in which case the language of the following disclosure may be controlled.

[0216] The applications and functions disclosed in the prior and subsequent embodiments can be achieved by programming the integrated controller 170 or other controller or processor associated with the battery manufacturing systems 10 and 100 in this disclosure. That is, the integrated controller 170 or other controller or processor associated with the battery manufacturing systems 10 and 100 in the prior and subsequent embodiments can, for example, utilize a computer-readable medium that stores instructions configured for one or more computers or processors to perform one of the methods described herein.

[0217] Figure 6 is a flowchart illustrating a method for manufacturing a battery according to an exemplary embodiment.

[0218] Referring to Figures 2, 3, and 6, the first electrode sheet ESN and the second electrode sheet ESP are unwinded from the first electrode roll ERN and the second electrode roll ERP, respectively, and moved toward the winder 150. Separator sheets are also unwinded from the separator rolls corresponding to each electrode roll and moved toward the winder 150. The unwinded first electrode sheet ESN is notched in a predetermined portion within the first winding length L1 by the first notching device 120N to form an electrode tab. The unwinded second electrode sheet ESP is notched in a predetermined portion within the second winding length L2 by the second notching device 120P to form an electrode tab.

[0219] The process controller 172 can move the electrode sheet and separator sheet by operating the unwinders corresponding to each electrode roll and separator roll, and can also notch each electrode sheet by controlling the first notching device 120N and the second notching device 120P respectively in accordance with the moving speed of the electrode sheet (S10 step).

[0220] The first electrode sheet ESN and the second electrode sheet ESP, which move to the winder 150, can be inspected and measured by predetermined inspection and / or measuring instruments before and / or after the notching process. Inspection and / or measurement data IMD, associated with the coordinate values ​​acquired by the inspection and / or measuring instruments, can be transmitted to the server 180 via the roll map PLC 171 and process controller 172. Alternatively, it can be transmitted to the server 180 via the integrated controller 170.

[0221] The roll map PLC171 or server 180 can generate a first roll map that replicates the first electrode sheet ESN and a second roll map that replicates the second electrode sheet ESP based on the coordinate values ​​and inspection and / or measurement data. The first roll map can display a first coordinate value indicating the position of the first electrode sheet and process event data associated with it. The second roll map can display a second coordinate value indicating the position of the second electrode sheet and process event data associated with it. Such roll map data can be associated with identification information assigned to the electrode assembly EA, which will be described later.

[0222] Each electrode sheet that has been inspected and / or measured can be moved by a corresponding guide roll and merged with a separator sheet. In this process, the first electrode sheet ESN can be cut by the first cutter 140N to a first winding length L1, and the second electrode sheet ESP can be cut by the second cutter 140P to a second winding length L2 (step S20).

[0223] The first electrode sheet portion with a first winding length and the second electrode sheet portion with a second winding length are wound together in the winder 150 via a separator to complete a jelly roll-shaped electrode assembly EA (step S30). The winder 150 may be equipped with a separate cutter for cutting the separator sheet. At this time, the first electrode sheet with a first winding length and the second electrode sheet with a second winding length can be wound together with a separator of a third winding length L3 to produce the electrode assembly.

[0224] The device for assigning a predetermined identification number to the completed electrode assembly EA is: Identification information can be assigned to the electrode assembly EA based on at least one of the following i) and ii) (S40 step).

[0225] i) Cut count value of the first electrode sheet and / or cut count value of the second electrode sheet and / or ii) Position coordinate values ​​of the first electrode sheet corresponding to the first winding length and / or position coordinate values ​​of the second electrode sheet corresponding to the second winding length.

[0226] The cut count value can be obtained by a cut counter installed in a cutter or the like, and the cut count value can be transmitted to the process controller 172 or the identification information management server 160.

[0227] The position coordinate values ​​of the first and second electrode sheets can be acquired by the roll map PLC 171 or integrated controller 170 based on the position signal (encoder value) of the position measuring instrument. The acquired position coordinate values ​​can be transmitted to the process controller 172 or identification information management server 160. The identification information assigning device, which is either the process controller 172 or the identification information management server 160 or a combination thereof, can assign, for example, virtual identification information (ID) to the completed electrode assembly EA based on the cut count value and / or position coordinate values ​​(step S40).

[0228] The identification information of the electrode assembly EA can be associated with one or more of the following by the identification information assigning device (process controller 172 or identification information management server 160 or a combination thereof) or the roll map generation server (roll map PLC 171 or server 180 or a combination thereof) (S50 step).

[0229] 1) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet, 2) The cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet, 3) Position coordinate values ​​of the first electrode sheet corresponding to the first winding length and / or position coordinate values ​​of the second electrode sheet corresponding to the second winding length, 4) Data relating to defects in the first electrode sheet and / or the second electrode sheet, 5) Data regarding defects in the above electrode assembly, 6) Tray identification information of the tray on which the electrode assembly is loaded, 7) Data relating to the loading position of the electrode assembly within the tray, and 8) Can identification information for the electrode can in which the above electrode assembly is housed.

[0230] In this case, the position coordinate values ​​of the first electrode sheet ESN include at least one of the start coordinate values ​​and end coordinate values ​​of the first winding length, and the position coordinate values ​​of the second electrode sheet ESP may include at least one of the start coordinate values ​​and end coordinate values ​​of the second winding length.

[0231] Furthermore, the positional coordinate values ​​of the first electrode sheet and the second electrode sheet may be roll map coordinate values ​​included in the first roll map, which is a simulated electrode that replicates the first electrode sheet moving from the first electrode roll to the winder, and the second roll map, which is a simulated electrode that replicates the first electrode sheet moving from the first electrode roll to the winder.

[0232] Additionally, the identification information of the electrode assembly EA can be further associated with process event data acquired when the first electrode sheet moves from the first electrode roll to the winder and when the second electrode sheet moves from the second electrode roll to the winder.

[0233] The above process event data may include at least one of the following: equipment data acquired at each process equipment from the first electrode roll and the second electrode roll to the winder; process-related inspection and / or measurement data acquired at each process; and time-series data acquired at each process.

[0234] Figure 7 shows a flowchart of an exemplary method 700 for manufacturing a battery according to one aspect of the present disclosure. For example, method 700 can be carried out according to one or more embodiments and one or more systems described with reference to Figures 1 to 7.

[0235] In step 702, the first electrode sheet unwinded by the first electrode roll can be cut into first electrode portions having a first winding length. In step 704, the second electrode sheet unwinded by the second electrode roll can be cut into second electrode portions having a second winding length. In step 706, the first electrode portion, the second electrode portion, and the separator between the first and second electrode portions can be wound to form an electrode assembly. In step 708, identification information can be assigned to the electrode assembly according to: the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet, and / or the position coordinate value of the first electrode sheet and / or the position coordinate value of the second electrode sheet.

[0236] In other respects, a method for manufacturing a battery may include one or more of the following features or steps. The method may also include a notching process to form one or more electrode tabs on the first electrode sheet and the second electrode sheet before cutting the first electrode sheet and the second electrode sheet. The notching process on the first electrode sheet may be performed within a first length range. The notching process on the second electrode sheet may be performed within a second length range. The separator may include a third length. The third length may be longer than the first and second lengths. Identification information for the electrode assembly may include: 1) lot identification information for the first electrode sheet and / or lot identification information for the second electrode sheet; 2) data regarding defects in the first electrode sheet and / or the second electrode sheet; 3) data regarding defects in the electrode assembly; 4) tray identification information for the tray on which the electrode assembly is loaded; 5) positional data for the loading position of the electrode assembly on the tray; and 6) can identification information for the electrode can containing the electrode assembly.

[0237] The position coordinates of the first electrode sheet may include at least one of the start coordinates of a first length or the end coordinates of a first length, and the position coordinates of the second electrode sheet may include at least one of the start coordinates of a second length or the end coordinates of a second length. The position coordinates of the first electrode sheet may be included in the first electrode roll map, and the position coordinates of the second electrode sheet may be included in the second electrode roll map. The first electrode roll map may include a simulated first electrode sheet moving from the first electrode roll to the winder. The second electrode roll map may be a simulated second electrode sheet moving from the second electrode roll to the winder. Identification information of the electrode assembly may be further associated with process event data acquired when the first electrode sheet moves from the first electrode roll to the winder and when the second electrode sheet moves from the second electrode roll to the winder. Process event data may include: equipment data acquired by one or more process equipment devices between the first electrode roll and the winder, and between the second electrode roll and the winder; inspection and / or measurement data acquired in one or more processes; and time-series data acquired in one or more processes.

[0238] The systems, methods, and batteries described with reference to Figures 1-7 of this disclosure improve existing battery manufacturing, monitoring, and tracking technologies. Specifically, the systems 100, 200, batteries, processes, and methods of this disclosure are aimed at improving existing battery technology fields and can be substantially applied to the field of battery manufacturing, monitoring, and tracking technologies by utilizing the systems 100, 200 and the methods, processes, and functions disclosed with reference to Figures 1-7 of this disclosure. Therefore, for example, the combined steps of the methods described with reference to Figures 6 and 7 can improve the quality tracking of electrodes and electrode assemblies containing such electrodes, not only within the winding process but also between the winding process and its preceding and succeeding processes, through the mediation of electrode assembly identification information, in a non-traditional manner. This can improve the manufacturing reliability of workpieces, semi-finished products, and finished products throughout the entire battery manufacturing process.

[0239] Generally, the processes shown by reference to Figures 1 to 7, and the processes discussed in this disclosure as being embodied in a computer such as the systems and / or interfaces described with respect to Figures 1 to 7, can be performed or embodied by one or more processors of a computer system. A process or process step performed by one or more processors can also be called an operation. One or more processors can be configured to perform such a process by accessing instructions (e.g., software or computer-readable code) that cause one or more processors to perform the process when executed by the one or more processors. Instructions can be stored in the memory of the computer system. Processors can be a central processing unit (CPU), a graphics processing unit (GPU), or other types of processing units.

[0240] A computer device or system, or any other system that facilitates the tracking and monitoring of manufacturing data for one or more batteries and / or battery components, as described with reference to Figures 1 to 7, may include one or more computing devices. If one or more processors in a computer system are embodied by multiple processors, these multiple processors may be contained in a single computing device or distributed across multiple computing devices. If a computer system includes multiple computing devices, the memory of the computer system may include the memory of each of the multiple computing devices.

[0241] According to the method disclosed herein, quality tracking of electrodes and electrode assemblies containing electrodes can be performed not only within the winding process but also between the winding process and the processes before and after the winding process, via identification information relating to the electrode assemblies. Thus, the manufacturing reliability of workpieces, intermediate products, and finished products can be improved throughout the entire battery manufacturing process.

[0242] The present disclosure has been described in more detail above through the drawings and embodiments. However, the configurations described in the drawings or embodiments described herein represent only one embodiment of the present disclosure and do not represent all of the technical ideas of the present disclosure. Therefore, there may be a variety of equivalents and modifications that can be substituted for them at the time of filing.

Claims

1. A first cutter cuts the first electrode sheet, which has been unwinded from the first electrode roll, into a first electrode portion having a first length. A second cutter cuts the second electrode sheet, which has been unwinded from the second electrode roll, into a second electrode portion having a second length. A winder that winds the first electrode portion and the second electrode portion via a separator to form an electrode assembly, The cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or A battery manufacturing system comprising: an identification information assigning device that assigns identification information to the electrode assembly based on the position coordinate values ​​of the first electrode sheet and / or the position coordinate values ​​of the second electrode sheet.

2. A first notching device for notching the first electrode sheet that has been unwinded from the first electrode roll, The battery manufacturing system according to claim 1, further comprising a second notching device for notching the second electrode sheet unwinding from the second electrode roll.

3. The system further includes a position measuring instrument that generates a first position signal for the first electrode sheet moving from the first electrode roll to the winder, and a second position signal for the second electrode sheet moving from the second electrode roll to the winder. The battery manufacturing system according to claim 1, which acquires coordinate data including the position coordinate values ​​based on the first position signal and the second position signal.

4. At least one first electrode inspection and / or measuring instrument is provided between the first electrode roll and the winder, The battery manufacturing system according to claim 1, wherein at least one second electrode inspection and / or measuring instrument is provided between the second electrode roll and the winder.

5. The aforementioned identification information assigning device is A process controller that controls one or more process equipment provided between the first electrode roll and the winder, and between the second electrode roll and the winder, Includes an identification information management server, or The battery manufacturing system according to claim 1, comprising a combination of the process controller and an identification information management server.

6. The process controller and / or the identification information management server, Based on process event data, the identification information of the electrode assembly is managed. The battery manufacturing system according to claim 5, wherein the process event data is acquired when the first electrode sheet moves from the first electrode roll to the winder and when the second electrode sheet moves from the second electrode roll to the winder.

7. The system further includes a roll map generation server that generates a first electrode roll map and a second electrode roll map. The first electrode roll map is a first simulated electrode sheet that includes first coordinate values ​​indicating the position of the first electrode sheet moving from the first electrode roll to the winder, The first electrode roll map includes first process event data acquired based on the movement of the first electrode sheet. The second electrode roll map is a second simulated electrode sheet that includes second coordinate values ​​indicating the position of the second electrode sheet moving from the second electrode roll to the winder, The battery manufacturing system according to any one of claims 1 to 6, wherein the second electrode roll map includes second process event data acquired based on the movement of the second electrode sheet.

8. The identification information assigning device is coupled with the role map generation server, The identification information assigning device and / or the role map generation server, The battery manufacturing system according to claim 7, wherein the identification information of the electrode assembly is configured to be associated with at least one of the first coordinate values, the second coordinate values, the first process event data, or the second process event data.

9. A first cutter cuts the first electrode sheet, which has been unwinded from the first electrode roll, into a first electrode portion having a first length. A second cutter cuts the second electrode sheet, which has been unwinded from the second electrode roll, into a second electrode portion having a second length. A winder that winds the first electrode portion and the second electrode portion via a separator to form an electrode assembly, Includes a roll map generation server configured to generate a first electrode roll map and a second electrode roll map, The first electrode roll map includes a first simulated electrode sheet, The first simulated electrode sheet includes a first coordinate value indicating the position of the first electrode sheet as it moves from the first electrode roll to the winder, and first process event data acquired based on the movement of the first electrode sheet. The second electrode roll map includes a second simulated electrode sheet, A battery manufacturing system comprising a second simulated electrode sheet, a second coordinate value indicating the position of the second electrode sheet as it moves from the second electrode roll to the winder, and second process event data acquired based on the movement of the second electrode sheet.

10. A first notching device for notching the first electrode sheet that has been unwinded from the first electrode roll, The battery manufacturing system according to claim 9, further comprising a second notching device for notching the second electrode sheet unwinding from the second electrode roll.

11. The cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or The battery manufacturing system according to claim 9 or 10, further comprising an identification information assigning device for assigning identification information to the electrode assembly based on a first coordinate value of the first electrode sheet and / or a second coordinate value of the second electrode sheet.

12. The identification information assigning device is coupled with the role map generation server, The identification information assigning device or the role map generation server, The battery manufacturing system according to claim 11, wherein the identification information of the electrode assembly is configured to associate with at least one of the first coordinate value, the second coordinate value, the first process event data, or the second process event data.

13. The steps include cutting the first electrode sheet, which has been unwinded from the first electrode roll, into a first electrode portion having a first length, The steps include cutting the second electrode sheet, which has been unwinded from the second electrode roll, into a second electrode portion having a second length, The steps include winding the first electrode portion and the second electrode portion via a separator to form an electrode assembly, The cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet and / or A method for manufacturing a battery, comprising the step of assigning identification information to the electrode assembly based on the position coordinate values ​​of the first electrode sheet and / or the position coordinate values ​​of the second electrode sheet.

14. Before the step of cutting the first electrode sheet and the second electrode sheet, The method further includes the step of notching the first electrode sheet and the second electrode sheet to form one or more electrode tabs, The notching of the first electrode sheet is performed within the range of the first length. The method for manufacturing a battery according to claim 13, wherein the notching of the second electrode sheet is performed within the range of the second length.

15. The method for manufacturing a battery according to claim 13, wherein the separator has a third length, and the third length is longer than the first length and the second length.

16. The identification information of the electrode assembly is, 1) Lot identification information of the first electrode sheet and / or lot identification information of the second electrode sheet, 2) Data relating to defects in the first electrode sheet and / or the second electrode sheet, 3) Data regarding defects in the electrode assembly, 4) Tray identification information of the tray on which the electrode assembly is loaded, 5) The loading position data of the electrode assembly in the tray, and 6) Can identification information of the electrode can in which the electrode assembly is housed, A method for manufacturing a battery according to any one of claims 13 to 15, including

17. The position coordinate values ​​of the first electrode sheet include at least one of the start coordinate value and end coordinate value of the first length, The method for manufacturing a battery according to claim 16, wherein the position coordinates of the second electrode sheet include at least one of the start coordinates and end coordinates of the second length.

18. The position coordinate values ​​of the first electrode sheet are included in the first electrode roll map. The position coordinate values ​​of the second electrode sheet are included in the second electrode roll map. The first electrode roll map includes a first simulated electrode sheet that replicates the first electrode sheet moving from the first electrode roll to the winder. The method for manufacturing a battery according to claim 16, wherein the second electrode roll map includes a second simulated electrode sheet that replicates the second electrode sheet moving from the second electrode roll to the winder.

19. The identification information of the electrode assembly is, A method for manufacturing a battery according to claim 16, further associated with process event data acquired when the first electrode sheet moves from the first electrode roll to the winder and when the second electrode sheet moves from the second electrode roll to the winder.

20. The aforementioned process event data is Equipment data obtained from one or more process equipment between the first electrode roll and the winder, and between the second electrode roll and the winder, Inspection and / or measurement data obtained in one or more processes, A method for manufacturing a battery according to claim 19, comprising time-series data obtained in one or more steps.

21. One or more non-temporary computer-readable media containing instructions given by a processor as instructions for battery manufacturing, The aforementioned instruction is, The steps include cutting the first electrode sheet, which has been unwinded from the first electrode roll, into a first electrode portion having a first length, The steps include cutting the second electrode sheet, which has been unwinded from the second electrode roll, into a second electrode portion having a second length, The steps include winding the first electrode portion and the second electrode portion via a separator to form an electrode assembly, A step of assigning identification information to the electrode assembly based on the cut count value of the first electrode sheet and / or the cut count value of the second electrode sheet, and / or the position coordinate values ​​of the first electrode sheet and / or the position coordinate values ​​of the second electrode sheet, Non-temporary computer-readable media including [unspecified].

22. The aforementioned instruction is, Before the step of cutting the first electrode sheet and the second electrode sheet, The method further includes the step of notching the first electrode sheet and the second electrode sheet to form one or more electrode tabs, The notching of the first electrode sheet is performed within the range of the first length. The non-temporary computer-readable medium according to claim 21, wherein the notching of the second electrode sheet is performed within the range of the second length.

23. Housing and A first electrode including a first index corresponding to the first cut count value of the first electrode sheet, A second electrode including a second index corresponding to the position coordinate values ​​of the second electrode sheet, A battery including a separator between a first electrode and a second electrode, The first electrode, the second electrode, and the separator form an electrode assembly, and the electrode assembly is housed in the housing. The electrode assembly includes a third indicator, the third indicator includes identification information for the electrode assembly, The housing includes a fourth indicator, the fourth indicator corresponding to the third indicator, and the battery.

24. The battery according to claim 23, wherein the first indicator is a mark on the surface of the first electrode.

25. The battery according to claim 23, wherein the first electrode includes an uncoated portion of the first electrode sheet.

26. The battery according to claim 23, wherein the fourth indicator corresponds to the identification information of the housing.

27. The battery according to claim 23, wherein the second pattern includes a coated portion of the second electrode sheet.

28. The separator includes a fifth indicator, The battery according to any one of claims 23 to 27, wherein the fifth indicator is a mark on the surface of the separator.

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