Battery manufacturing apparatus and method thereof

Abstract

A battery manufacturing apparatus according to an embodiment of the present document comprises: a memory for storing at least one instruction; and one or more processors for executing the at least one instruction, wherein the one or more processors, in a winding process of a battery, identify the movement distance of an electrode plate moving in the left direction or the right direction relative to a direction in which the electrode plate advances before being wound, as the speed at which the electrode plate is wound changes, determine a tension for pulling the electrode plate in a direction opposite to the direction in which the electrode plate advances on the basis of the movement distance, and wind the electrode plate on the basis of the tension.

Description

Battery manufacturing device and method thereof

[0001] Cross-citation with related applications

[0002] This application claims the benefit of priority from Republic of Korea Patent Application No. 10-2024-0074405, filed June 7, 2024, the entire contents of which are incorporated herein by reference.

[0003] Technology field

[0004] The embodiments disclosed in this document relate to a battery manufacturing device and method thereof.

[0005] Recently, research and development on secondary batteries has been actively underway. Here, secondary batteries are defined as rechargeable and dischargeable batteries, encompassing both conventional Ni / Cd and Ni / MH batteries, as well as more recent lithium-ion batteries. Recently, their use has expanded to include power sources for electric vehicles, attracting attention as a next-generation energy storage medium.

[0006] The recent increase in demand for high-capacity batteries has led to the development of high-capacity batteries. In particular, competition to develop large cylindrical batteries with a cylindrical form factor is intensifying due to issues of easy mass production, stability, and production costs. To manufacture cylindrical batteries, technologies have been developed to wind plates and separators into a cylindrical shape. As demand for cylindrical batteries grows, battery manufacturing technologies are being developed to reduce manufacturing time, improve the precision of winding plates and separators, and lower defect rates.

[0007] According to the embodiments disclosed in this document, it is intended to provide a battery manufacturing device and method for winding a plate while changing the winding speed of the plate.

[0008] According to the embodiments disclosed in this document, it is intended to provide a battery manufacturing device and method for winding a plate while accelerating, maintaining a speed, or decelerating.

[0009] According to the embodiments disclosed in this document, it is intended to provide a battery manufacturing device and method capable of shortening the manufacturing time of a battery by changing the winding speed of a polar plate.

[0010] According to the embodiments disclosed in this document, an object is to provide a battery manufacturing device and method for winding a plate subjected to a changing tension.

[0011] According to the embodiments disclosed in this document, it is intended to provide a battery manufacturing device and method for determining a tension that changes according to a movement distance of a plate in the left or right direction of the direction in which the plate advances.

[0012] According to the embodiments disclosed in this document, an object is to provide a battery manufacturing device and method for improving the winding stability or winding precision of a polar plate.

[0013] According to the embodiments disclosed in this document, it is intended to provide a battery manufacturing device and method for determining a tension that changes as the winding speed of a plate changes.

[0014] According to the embodiments disclosed in this document, an object is to provide a battery manufacturing device and method capable of reducing the defect rate of a manufactured battery.

[0015] According to the embodiments disclosed in this document, an object is to provide a battery manufacturing device and method capable of shortening the manufacturing time of a battery by improving the winding performance.

[0016] The technical challenges of this document are not limited to the technical challenges mentioned above, and other technical challenges not mentioned will be clearly understood by those skilled in the art from the descriptions below.

[0017] A battery manufacturing device according to one embodiment of the present document may include a memory storing at least one instruction, and one or more processors executing the at least one instruction.

[0018] According to one embodiment, the one or more processors may identify a movement distance of the electrode plate to the left or right of the direction in which the electrode plate moves before being wound as the speed at which the electrode plate is wound changes in a winding process of the battery, determine a tension for pulling the electrode plate in a direction opposite to the direction in which the electrode plate moves based on the movement distance, and wind the electrode plate based on the tension.

[0019] According to one embodiment, the one or more processors may determine a first speed value at which the plate is wound at a point in time when the length of the plate wound is included in a first length range that is less than a first length, to be smaller than a second speed value at which the plate is wound at a point in time when the length of the plate wound is included in a second length range that is equal to or greater than the first length and less than the second length.

[0020] According to one embodiment, the one or more processors may accelerate and wind the plate over time while the length of the plate wound is included in the first length range, wind the plate at a constant speed over time so that the speed at which the plate is wound is included in a designated speed range while the length of the plate wound is included in the second length range, and decelerate and wind the plate over time while the length of the plate wound is included in a third length range that is equal to or greater than the second length.

[0021] According to one embodiment, the one or more processors may determine a first speed value at which the plate is wound at any point in time within a first time range in which the time at which the plate is wound is less than a first time, to be smaller than a second speed value at which the plate is wound at any point in time within a second time range in which the time at which the plate is wound is equal to or greater than the first time and less than the second time.

[0022] In one embodiment, the one or more processors may determine the tension based on a change in the speed at which the plate is wound.

[0023] In one embodiment, the one or more processors may determine the tension based on a correlation in which the tension increases as the movement distance increases.

[0024] According to one embodiment, the one or more processors may determine the tension at any point in time when the movement distance is included in a first distance range that is less than a first distance as a first size, and determine the tension at any point in time when the movement distance is included in a second distance range that is equal to or greater than the first distance as a second size that is greater than the first size.

[0025] According to one embodiment, the electrode plate may include at least one of an anode, a cathode, or any combination thereof.

[0026] According to other embodiments disclosed in the present document, in a winding process of a battery, as the speed at which the plate is wound is changed, the method may include an operation of identifying a movement distance by which the plate moves in a leftward or rightward direction relative to the direction in which the plate is moving before being wound, an operation of determining a tension for pulling the plate in a direction opposite to the direction in which the plate is moving based on the movement distance, and an operation of winding the plate based on the tension.

[0027] According to one embodiment, the battery manufacturing method may further include an operation of determining a first speed value at which the electrode plate is wound at a point in time when the length at which the electrode plate is wound is included in a first length range that is less than a first length, to be smaller than a second speed value at which the electrode plate is wound at a point in time when the length at which the electrode plate is wound is included in a second length range that is equal to or greater than the first length and less than the second length.

[0028] According to one embodiment, the operation of determining a first speed value at which the plate is wound at a point in time when the length of the plate wound is included in a first length range that is less than the first length, to be smaller than a second speed value at which the plate is wound at a point in time when the length of the plate wound is included in a second length range that is equal to or greater than the first length and less than the second length, may include an operation of accelerating and winding the plate over time while the length of the plate wound is included in the first length range, an operation of winding the plate at a constant speed over time while the length of the plate wound is included in the second length range such that the speed at which the plate is wound is included in a designated speed range, and an operation of decelerating and winding the plate over time while the length of the plate wound is included in a third length range that is equal to or greater than the second length.

[0029] According to one embodiment, the battery manufacturing method may further include an operation of determining a first speed value at which the plate is wound at any point in time within a first time range in which the time at which the plate is wound is less than a first time, to be smaller than a second speed value at which the plate is wound at any point in time within a second time range in which the time at which the plate is wound is equal to or greater than the first time and less than the second time.

[0030] According to one embodiment, the battery manufacturing method may further include an operation of determining the tension based on a change in the speed at which the electrode plates are wound.

[0031] According to one embodiment, the operation of determining a tension for pulling the plate in a direction opposite to the direction in which the plate is moving based on the movement distance may include an operation of determining the tension based on a correlation in which the tension increases as the movement distance increases.

[0032] According to one embodiment, the operation of determining a tension for pulling the plate in a direction opposite to the direction in which the plate is moving based on the movement distance may include an operation of determining the tension at a point in time when the movement distance is included in a first distance range smaller than a first distance as a first magnitude, and an operation of determining the tension at a point in time when the movement distance is included in a second distance range equal to or greater than the first distance as a second magnitude greater than the first magnitude.

[0033] According to one embodiment, in the battery manufacturing method, the electrode plate may include at least one of a positive electrode, a negative electrode, or any combination thereof.

[0034] This technology can wind the plate by changing the winding speed of the plate.

[0035] Additionally, the present technology can accelerate, maintain, or decelerate the plate and wind it.

[0036] Additionally, the present technology can shorten the manufacturing time of a battery by changing the winding speed of the electrode plate.

[0037] In addition, the present technology can wind a plate subjected to changing tension.

[0038] Additionally, the present technology can determine the tension that changes according to the distance that the plate moves in the left or right direction of the direction in which the plate advances.

[0039] Additionally, the present technology can determine the tension that changes as the winding speed of the polar plate changes.

[0040] In addition, the present technology can improve the winding stability or winding precision of the polar plate.

[0041] Additionally, this technology can reduce the failure rate of batteries.

[0042] Additionally, the present technology can shorten the manufacturing time of batteries by improving the winding performance.

[0043] In addition, various effects may be provided directly or indirectly through this document.

[0044] Figure 1 is a block diagram showing the configuration of a battery manufacturing device according to one embodiment of the present document.

[0045] FIG. 2 illustrates a winding process in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0046] FIG. 3 illustrates the measured movement distance of the electrode plate in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0047] FIG. 4 illustrates a graph showing a movement distance according to the position of a plate in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0048] FIG. 5 illustrates a flow of operations of a battery manufacturing device for winding a plate in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0049] FIG. 6 is a block diagram showing the hardware configuration of a computing system for performing a battery manufacturing method in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0050] Hereinafter, some embodiments disclosed in this document are described with reference to the accompanying drawings, which illustrate various embodiments of this document. However, this is not intended to limit the present technology to specific embodiments, and it should be understood that various modifications, equivalents, and / or alternatives of the embodiments of this technology are included.

[0051] When assigning reference numerals to components in each drawing, it should be noted that identical components are assigned the same numerals whenever possible, even if they are shown in different drawings. Furthermore, when describing various embodiments disclosed in this document, if a detailed description of a related known configuration or function is deemed to hinder understanding of the embodiments of the present invention, the detailed description will be omitted. The singular form of a noun corresponding to an item may include one or more items, unless the context clearly indicates otherwise.

[0052] In describing the components of the embodiments of this document, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components may not be limited by the terms. In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments disclosed in this document belong. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined in this application.

[0053] In addition, in the present disclosure, expressions such as "more than" or "less than" may be used to determine whether a specific condition is satisfied or fulfilled. However, this is merely a description for expressing an example and does not exclude descriptions such as "more than" or "less than." Conditions described as "more than" may be replaced with "more than," conditions described as "less than," and conditions described as "more than and less than" may be replaced with "more than and less than." In addition, hereinafter, "A" to "B" mean at least one of the elements from A (including A) to B (including B).

[0054] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0055] In this document, when a component (e.g., a first component) is referred to as being “connected,” “coupled,” or “connected,” with or without the terms “functionally” or “communicatively,” or is referred to as being “coupled” or “connected,” it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0056] According to one embodiment, the method according to the various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) through an application store or directly between two user devices. In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0057] According to various embodiments, each component (e.g., a module or a program) of the described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0058] Hereinafter, embodiments of the present document will be described in detail with reference to FIGS. 1 to 6.

[0059] Figure 1 is a block diagram showing the configuration of a battery manufacturing device according to one embodiment of the present document.

[0060] Referring to FIG. 1, a battery manufacturing device (101) may include a memory (103) that stores at least one command, and one or more processors that execute the at least one command.

[0061] According to one embodiment, the battery manufacturing device (101) can manufacture a battery through an electrode process, an assembly process, an activation process, and a packing process. The electrode process may include a process of forming a negative electrode and an anode to produce a cylindrical battery having a cylindrical form factor. The assembly process may include a process of forming a battery shape through a negative electrode, a positive electrode, and a separator. The packing process may include an activation process for activating and stabilizing electrical energy, and a process of modularizing the battery according to a model.

[0062] In one embodiment, the assembly process may include a winding process for winding at least one of the negative electrode, the positive electrode, the separator, or any combination thereof to produce a cylindrical battery.

[0063] While the battery manufacturing device is performing the winding process, the shape of the jelly-roll-shaped electrode assembly formed by winding the plates may become unstable as the plates (e.g., positive or negative plates) move to the left or right of the direction of travel.

[0064] Therefore, one or more processors (105) of a battery manufacturing device (101) according to an embodiment can wind the plate by varying the tension for pulling the plate according to the distance that the plate moves in the left or right direction of the direction in which the plate is moving before being wound, as the speed at which the plate is wound is changed in the winding process of the battery. This is because the greater the tension is pulled in the direction opposite to the direction in which the plate is moving, the less the plate moves in the left or right direction.

[0065] According to one embodiment, the stability of battery winding may be improved as the battery manufacturing device (101) pulls the electrode plates with greater tension. In addition, the frequency of occurrence of defects due to meandering may be reduced as the battery manufacturing device (101) pulls the electrode plates with greater tension. Defects due to meandering in the battery winding process may refer to defects in a battery cell that occur when the electrode plates are wound in a state where they move to the left or right of the direction in which the electrode plates are traveling before being wound.

[0066] However, if the tension for pulling the pole plate is continuously maintained above a specific tension and the winding process is carried out, the consumption resources may be greater than the consumption resources if the winding process is carried out while the tension for pulling the pole plate is continuously maintained below the specific tension.

[0067] Therefore, one or more processors (105) of a battery manufacturing device (101) according to an embodiment can change the tension by determining the tension for pulling the electrode plate according to the distance the electrode plate moves, in order to achieve an appropriate benefit balance between reducing consumption of resources and reducing the frequency of occurrence of defects due to gambling.

[0068] The content of identifying the movement distance of the electrode plate by one or more processors (105) of the battery manufacturing device (101) according to one embodiment is described below in FIG. 3.

[0069] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can change the speed of winding the electrode plates over time.

[0070] According to one embodiment, the first speed value at which the plate is wound at a point in time when the length of the plate wound is included in a first length range that is less than the first length may be determined to be smaller than the second speed value at which the plate is wound at a point in time when the length of the plate wound is included in a second length range that is greater than the first length and less than the second length. The details of the change in the winding speed of the plate will be described below with reference to FIG. 2.

[0071] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can determine the tension according to the identified movement distance based on a correlation that increases the tension as the movement distance increases. This is because the more the plate is pulled by increasing the tension in the opposite direction to the direction in which the plate is moving, the less the plate moves to the left or right.

[0072] According to another embodiment, one or more processors (105) of the battery manufacturing device (101) may determine the tension at any point in time, when the movement distance is included in a first distance range smaller than the first distance, as a first magnitude, and may determine the tension at any point in time, when the movement distance is included in a second distance range equal to or larger than the first distance, as a second magnitude larger than the first magnitude.

[0073] FIG. 2 illustrates a winding process in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0074] Referring to FIG. 2, one or more processors (105) of a battery manufacturing device (101) can wind a negative electrode plate (201), a first separator (203), a positive electrode plate (205), and a second separator (207). The negative electrode plate (201) may represent a plate that stores positive ions when the battery cell is charged. For example, in a lithium ion battery, the negative electrode plate (201) may include an active material such as graphite, graphene, or silicon, and a conductive material.

[0075] The positive electrode plate (205) may refer to a plate that releases positive ions when the battery cell is charged. For example, the positive electrode plate (205) may include an active material such as lithium and a conductive material in a lithium ion battery.

[0076] The first separator (203) and the second separator (207) may represent plates for blocking contact between the positive electrode plate (205) and the negative electrode plate (201). For example, the first separator (203) and the second separator (207) may include plates made of a polymer having insulating properties in a lithium ion battery. Since the positive electrode plate (205) and the negative electrode plate (201) are wound in a cylindrical shape, the battery manufacturing device (101) may require two separators (e.g., the first separator (203) and the second separator (207)) to block contact between the positive electrode plate (205) and the negative electrode plate (201).

[0077] According to one embodiment, one or more processors (105) of a battery manufacturing device (101) can obtain a jelly-roll type electrode assembly by winding together a negative electrode plate (201), a first separator (203), a positive electrode plate (205), and a second separator (207).

[0078] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) may divide the winding process into a plurality of stages (e.g., stage 1, stage 2, stage 3) depending on the degree to which the plates are wound. According to one embodiment, the degree to which the plates are wound may be identified by the length of the plates wound or the time for which the plates are wound.

[0079] For example, the lengths along which the polar plate is wound can be distinguished by a first length range, a second length range, and a third length range. The first length range can include a range that is less than the first length. The second length range can include a range that is equal to or greater than the first length and less than the second length. The third length range can include a range that is equal to or greater than the second length.

[0080] For another example, the time at which the plate is wound can be distinguished by a first time range, a second time range, and a third time range. The first time range can include a time range that is less than the first time range. The second time range can include a time range that is equal to or greater than the first time range and less than the second time range. The third time range can include a time range that is equal to or greater than the second time range.

[0081] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) may determine the winding speed as a first speed value in a first step (e.g., a step in which the length of the electrode plate wound is included in a first length range, a step in which the time of the electrode plate wound is included in the first time range). One or more processors (105) of the battery manufacturing device (101) may determine the winding speed as a second speed value greater than the first speed value in a second step (e.g., a step in which the length of the electrode plate wound is included in a second length range, a step in which the time of the electrode plate wound is included in the second time range). One or more processors (105) of the battery manufacturing device (101) may determine the winding speed as a third speed value less than the second speed value in a third step (e.g., a step in which the length of the electrode plate wound is included in a third length range, a step in which the time of the electrode plate wound is included in the third time range).

[0082] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can gradually increase and decrease the speed at which the plates are wound, depending on the degree to which the plates are wound. This is because the process of winding the plates is composed of a portion where the plates begin to be wound and accelerate, a portion where the plates proceed at a constant speed, and a portion where the plates decelerate.

[0083] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can wind the electrode plate by accelerating it over time while the length along which the electrode plate is wound is included in a first length range. One or more processors (105) of the battery manufacturing device (101) can wind the electrode plate at a constant speed over time while the length along which the electrode plate is wound is included in a second length range so that the speed at which the electrode plate is wound is included in a designated speed range. One or more processors (105) of the battery manufacturing device (101) can wind the electrode plate by decelerating it over time while the length along which the electrode plate is wound is included in a third length range that is equal to or greater than the second length.

[0084] However, if the speed at which the plate is wound is changed in this way, the distance the plate moves in the left or right direction of the direction in which the plate is moving may increase.

[0085] In one embodiment, to reduce the movement distance, one or more processors (105) of the battery manufacturing device (101) can identify the movement distance and pull the plate in the opposite direction to the direction in which the plate is traveling through a tension changed according to the movement distance, or through a tension changed according to a change in the winding speed.

[0086] According to another embodiment, one or more processors (105) of the battery manufacturing device (101) can determine the tension at a point in time when the winding speed changes to be greater than the tension at a point in time when the winding speed does not change.

[0087] FIG. 3 illustrates the measured movement distance of the electrode plate in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0088] Referring to FIG. 3, a first situation (301) may represent a sensor (303) for measuring a movement distance of the electrode plate (305) in the left or right direction of the direction in which the electrode plate (305) moves when the electrode plate (305) is wound. A second situation (311) may represent a light-emitting unit (313) and a light-receiving unit (315) included in the sensor (303) for measuring a movement distance of the electrode plate (305) in the left or right direction. The light-emitting unit (313) may include a sensor that emits light. The light-receiving unit (315) may include a sensor that detects light.

[0089] According to one embodiment, when the plate (305) is wound in the first situation (301), the plate (305) may move to the left or right of the direction in which the plate (305) moves before being wound. The sensor (303) may measure the movement distance of the plate (305).

[0090] According to one embodiment, in the second situation (311), if the plate (305) does not move in the left or right direction of the direction in which the plate (305) is moving while being wound, the length of light detected by the light receiving unit (315) included in the sensor (303) may be constant.

[0091] In the second situation (311), if the plate (305) moves to the left or right of the direction in which the plate (305) is moving while being wound, and a movement distance occurs, the length of light detected by the light receiving portion (315) included in the sensor (303) may change. This is because the position of the light projecting portion (313) and the position of the light receiving portion (315) are constant.

[0092] Therefore, one or more processors (105) of the battery manufacturing device (101) can measure the movement distance of the electrode plate (305) in the left or right direction of the direction in which the electrode plate (305) is moving based on the length of light detected by the light receiving unit (315) when the position of the light transmitting unit (313) and the position of the light receiving unit (315) are constant. The process of measuring the movement distance may be referred to as a meandering test.

[0093] A conventional battery manufacturing device may include an actuator that moves the electrode plate (305) in a left or right direction depending on the movement distance. However, the rate of reduction in the movement distance by the actuator may be smaller than the rate of reduction in the movement distance by the battery manufacturing device according to one embodiment.

[0094] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can determine a tension to pull the plate (305) in the opposite direction to which the plate (305) is traveling based on the distance traveled measured by the sensor (303) or based on a change in the winding speed.

[0095] FIG. 4 illustrates a graph showing a movement distance according to the position of a plate in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0096] Referring to FIG. 4, the first graph (401) may represent the movement distance of the negative plate (201) measured according to the position of the negative plate (201) in a conventional battery manufacturing device.

[0097] The first section (403) of the first graph (401) may represent a section in which the speed at which the negative plate (201) is wound changes from being wound at an accelerated rate over time to being wound at a constant rate over time. The second section (405) of the first graph (401) may represent a section in which the speed at which the negative plate (201) is wound changes from being wound at a constant rate over time to being wound at a decelerated rate over time.

[0098] The second graph (411) can represent the movement distance of the positive plate (205) measured according to the position of the positive plate (205) in a conventional battery manufacturing device.

[0099] The third section (413) of the second graph (411) may represent a section in which the speed at which the positive electrode plate (205) is wound changes from being wound at a constant speed over time to being wound at a reduced speed over time.

[0100] The third graph (421) may represent the movement distance of the negative plate (201) measured according to the position of the negative plate (201) in the battery manufacturing device (101) according to one embodiment.

[0101] The fourth section (423) of the third graph (421) may represent a section in which the speed at which the negative plate (201) is wound changes from being wound at an accelerated rate over time to being wound at a constant rate over time. The fifth section (425) of the third graph (421) may represent a section in which the speed at which the negative plate (201) is wound changes from being wound at a constant rate over time to being wound at a decelerated rate over time.

[0102] The fourth graph (431) may represent the movement distance of the positive plate (205) measured according to the position of the positive plate (205) in the battery manufacturing device (101) according to one embodiment.

[0103] The sixth section (433) of the fourth graph (431) may represent a section in which the bipolar plate (205) is wound at a constant speed over time, and then changes to be wound at a reduced speed over time.

[0104] According to one embodiment, the movement distance of the negative plate (201) measured by the existing battery manufacturing device in a specific section of the first graph (401) (e.g., the first section (403) or the second section (405)) may be greater than the movement distance of the negative plate (201) measured by the battery manufacturing device (101) according to one embodiment in a section corresponding to the specific section of the second graph (421) (e.g., the fourth section (423) or the fifth section (425)). Therefore, the degree of defect due to meandering of the negative plate (201) in the battery manufacturing device (101) according to one embodiment may be lower than the degree of defect due to meandering of the negative plate (201) in the existing battery manufacturing device.

[0105] According to one embodiment, the movement distance of the positive plate (205) measured by the existing battery manufacturing device in the third section (413) of the second graph (411) may be greater than the movement distance of the positive plate (205) measured by the battery manufacturing device (101) according to one embodiment in the sixth section (433) of the fourth graph (431) corresponding to the third section (413) of the second graph (421). Therefore, the degree of defect due to meandering of the positive plate (205) in the battery manufacturing device (101) according to one embodiment may be lower than the degree of defect due to meandering of the positive plate (205) in the existing battery manufacturing device.

[0106] FIG. 5 illustrates a flow of operations of a battery manufacturing device for winding a plate in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0107] Referring to FIG. 5, in the first operation (501), one or more processors (105) of the battery manufacturing device (101) according to one embodiment can identify a movement distance by which the plate moves in the left or right direction of the direction in which the plate moves before being wound, as the speed at which the plate is wound changes in the winding process of the battery.

[0108] According to one embodiment, one or more processors (105) of a battery manufacturing device (101) may change the speed at which the plates are wound over time, depending on the degree to which the plates are wound (e.g., the length by which the plates are wound, the time for which the plates are wound), when winding the plates (e.g., the negative plate (201), the positive plate (205)). In this way, when the speed at which the plates are wound is changed, the distance by which the plates move in the left or right direction of the direction in which the plates are moving increases, which may increase the defect rate due to meandering.

[0109] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) may monitor the movement distance to reduce the defect rate, since the probability of defects due to wandering may increase as the movement distance of the electrode plates increases.

[0110] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can measure the movement distance of the electrode plate in the left or right direction of the direction in which the electrode plate advances through the sensor (303) of FIG. 3.

[0111] In a second operation (503), one or more processors (105) of a battery manufacturing device (101) according to an embodiment may determine a tension for pulling the plate in a direction opposite to the direction in which the plate is moving, based on the movement distance.

[0112] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can determine a tension corresponding to the identified movement distance based on a correlation in which the tension increases as the movement distance increases. This is because the greater the tension pulling in the direction opposite to the direction in which the plate is moving, the less the plate moves to the left or right.

[0113] According to another embodiment, one or more processors (105) of the battery manufacturing device (101) may determine the tension at any point in time, when the movement distance is included in a first distance range smaller than the first distance, as a first magnitude, and may determine the tension at any point in time, when the movement distance is included in a second distance range equal to or larger than the first distance, as a second magnitude larger than the first magnitude.

[0114] In the third operation (505), one or more processors (105) of the battery manufacturing device (101) according to one embodiment can wind the electrode plate based on tension.

[0115] According to one embodiment, one or more processors (105) of the battery manufacturing device (101) can wind the electrode plate while pulling the electrode plate with tension in the opposite direction to the direction in which the electrode plate moves. This is because the greater the tension, the smaller the distance in which the electrode plate moves.

[0116] In one embodiment, the speed at which the plate is wound may indicate the length of the winding according to the winding time, but the embodiment of the present invention may not be limited thereto. For example, the speed at which the plate is wound may indicate the angle of rotation for winding according to the winding time.

[0117] FIG. 6 is a block diagram showing the hardware configuration of a computing system for performing a battery manufacturing method in a battery manufacturing device and a battery manufacturing method according to one embodiment of the present document.

[0118] Referring to FIG. 6, a computing system (600) according to an embodiment disclosed in this document may include an MCU (610), a memory (620), an input / output I / F (630), and a communication I / F (640).

[0119] The MCU (610) may be one or more processors that execute various programs (e.g., a battery cell data collection program, a graph generation program, a data analysis program, a data decomposition algorithm, a normalization program, a battery cell diagnosis program, etc.) stored in the memory (620), process various information including battery cell characteristic data, latent variables, etc. through these programs, and perform the functions of the battery manufacturing device (101) shown in the above-described FIGS. 1 to 6.

[0120] The memory (620) can store various programs such as a battery cell data collection program, a graph generation program, a data analysis program, a data decomposition algorithm, a normalization program, and a battery cell diagnosis program.

[0121] Such memories (620) may be provided in multiples as needed. The memories (620) may be volatile memories or non-volatile memories. As volatile memories (620), RAM, DRAM, SRAM, etc. may be used. As non-volatile memories (620), ROM, PROM, EAROM, EPROM, EEPROM, flash memories, etc. may be used. The examples of the memories (620) listed above are merely examples and are not limited to these examples.

[0122] The input / output I / F (630) can provide an interface that enables data transmission and reception between an input device (not shown) such as a keyboard, mouse, or touch panel, and an output device (not shown) such as a display and the MCU (610).

[0123] The communication I / F (640) is a component capable of transmitting and receiving various data with the server, and may be any device capable of supporting wired or wireless communication. For example, the battery manufacturing device (101) can transmit and receive various types of information, including battery cell shape models, from a separately provided external server via the communication I / F (640).

[0124] In this way, a computer program according to an embodiment disclosed in this document may be implemented as a module that performs each function illustrated in FIG. 2, for example, by being recorded in a memory (620) and processed by an MCU (610).

[0125] In the above, although all components constituting the embodiments disclosed in this document have been described as being combined or operating in combination as one, the embodiments disclosed in this document are not necessarily limited to such embodiments. That is, within the scope of the purpose of the embodiments disclosed in this document, all of the components may be selectively combined and operated one or more times.

[0126] In addition, terms such as "include," "comprise," or "have" described above, unless specifically stated to the contrary, should be interpreted to imply the inclusion of the corresponding component, and thus should not be interpreted to exclude other components, but rather to include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments disclosed in this document belong, unless otherwise defined. Commonly used terms, such as terms defined in a dictionary, should be interpreted to be consistent with the contextual meaning of the relevant technology, and shall not be interpreted in an idealized or overly formal sense, unless explicitly defined in this document.

[0127] The foregoing disclosure outlines features of several embodiments to enable those skilled in the art to better understand the aspects of the present disclosure. Those skilled in the art will readily appreciate that the present disclosure can be readily used as a basis for designing or modifying other structures to achieve the same purposes or advantages of the embodiments introduced herein. Furthermore, those skilled in the art will recognize that such equivalent structures do not depart from the scope of the present disclosure, and that various changes, substitutions, and modifications can be made herein without departing from the scope of the present disclosure.

Claims

1. A memory that stores at least one instruction; and comprising one or more processors executing at least one instruction; One or more of the above processors, In the winding process of a battery, as the speed at which the plates are wound changes, the distance the plates move in the left or right direction relative to the direction in which the plates are moving before being wound is identified, Based on the above movement distance, the tension that pulls the plate in the opposite direction to the direction in which the plate moves is determined, configured to wind the above-mentioned plate based on the above-mentioned tension, Battery manufacturing equipment.

2. In claim 1, One or more of the above processors, A first speed value at which the above-mentioned plate is wound at a point in time when the length of the above-mentioned plate is included in a first length range less than the first length, The above-mentioned plate is configured to be determined to be less than the second speed value at which the plate is wound at any point in time when the length at which the plate is wound is included in a second length range that is equal to the first length or greater than the first length and less than the second length. Battery manufacturing equipment.

3. In claim 2, One or more of the above processors, While the length of the above-mentioned plate is included in the first length range, the above-mentioned plate is wound by accelerating over time, While the length of the above-mentioned plate is wound within the second length range, the above-mentioned plate is wound at a constant speed over time so that the speed at which the above-mentioned plate is wound is within a specified speed range, The above-mentioned electrode plate is configured to be wound at a deceleration rate over time while the wound length of the above-mentioned electrode plate is included in a third length range that is equal to or greater than the second length. Battery manufacturing equipment.

4. In claim 1, One or more of the above processors, A first speed value at which the above-mentioned plate is wound at a point in time that is included in a first time range that is less than the first time, The above-mentioned wound time is configured to be determined to be less than the second speed value at which the plate is wound at any one point in time included in a second time range that is equal to or greater than the first time and less than the second time. Battery manufacturing equipment.

5. In claim 1, One or more of the above processors, Based on the change in the speed at which the above-mentioned plate is wound, the tension is determined, Battery manufacturing equipment.

6. In claim 1, One or more of the above processors, Based on the correlation that the tension increases as the movement distance increases, the tension is configured to be determined. Battery manufacturing equipment.

7. In claim 1, One or more of the above processors, The tension at any point in time within a first distance range where the above movement distance is less than the first distance is determined as the first size, The tension at any point in time when the movement distance is included in a second distance range that is equal to or greater than the first distance is determined to be a second size greater than the first size. Battery manufacturing equipment.

8. In claim 1, The above plate is, Consisting of at least one of a positive electrode, a negative electrode, or any combination thereof, Battery manufacturing equipment.

9. In the winding process of a battery, as the speed at which the plates are wound changes, an operation of identifying the distance in which the plates move in the left or right direction relative to the direction in which the plates are moving before being wound; An operation of determining a tension for pulling the plate in the opposite direction to the direction in which the plate is moving based on the movement distance; and Including an operation of winding the electrode plate based on the tension. How to manufacture a battery.

10. In claim 9, A first speed value at which the above-mentioned plate is wound at a point in time when the length of the above-mentioned plate is included in a first length range less than the first length, Further comprising an operation of determining that the length of the electrode plate wound is less than the second speed value at which the electrode plate is wound at any point in time, which is included in a second length range that is equal to the first length or greater than the first length and less than the second length. How to manufacture a battery.

11. In claim 10, An operation of determining a first speed value at which the plate is wound at a point in time when the length of the plate is included in a first length range that is less than the first length, to be smaller than a second speed value at which the plate is wound at a point in time when the length of the plate is included in a second length range that is equal to the first length or greater than the first length and less than the second length, An operation of accelerating and winding the electrode plate over time while the length of the electrode plate being wound is included in the first length range; An operation of winding the plate at a constant speed over time so that the speed at which the plate is wound is within a specified speed range while the length at which the plate is wound is within the second length range; and An operation of winding the plate by slowing down over time while the length of the plate wound is included in a third length range that is equal to or greater than the second length, How to manufacture a battery.

12. In claim 9, A first speed value at which the above-mentioned plate is wound at a point in time that is included in a first time range that is less than the first time, Further comprising an operation of determining that the plate is less than the second speed value at which the wound time is at any point in time included in a second time range that is equal to or greater than the first time and less than the second time. How to manufacture a battery.

13. In claim 9, Further including an operation of determining the tension based on a change in the speed at which the above-mentioned plate is wound. How to manufacture a battery.

14. In claim 9, Based on the above movement distance, the operation of determining the tension that pulls the plate in the opposite direction to the direction in which the plate is moving is as follows: An operation for determining the tension based on a correlation in which the tension increases as the movement distance increases, How to manufacture a battery.

15. In claim 9, Based on the above movement distance, the operation of determining the tension that pulls the plate in the opposite direction to the direction in which the plate is moving is as follows: An operation of determining the tension at a point in time within a first distance range less than the first distance as a first size; and An operation of determining the tension at any point in time when the movement distance is included in a second distance range that is equal to or greater than the first distance, to be a second size greater than the first size, How to manufacture a battery.

16. In claim 9, The above plate is, Consisting of at least one of a positive electrode, a negative electrode, or any combination thereof, How to manufacture a battery.

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