Electrode sheet position deviation control method, device, electrode sheet, cell, battery

Abstract

This application relates to the technical field of batteries and discloses an electrode sheet misalignment control method, device, electrode sheet, cell and battery. The electrode sheet misalignment control method includes obtaining position information of a cutout hole of an anode sheet, calculating a first sheet width deviation value corresponding to the anode sheet based on the cutout hole position information and the target width of the anode sheet, obtaining tab position information of a cathode sheet, and calculating a second sheet width deviation value corresponding to the cathode sheet based on the tab position information and the target width of the cathode sheet, and adjusting the sheet feed position of the cathode sheet corresponding to the first sheet width deviation value when laminating the anode sheet and the cathode sheet, and compensating the slice width of the cathode sheet based on the second sheet width deviation value. This application can maintain the edges of the cathode sheet and the anode sheet at a predetermined distance after lamination, avoiding the misalignment of the cathode sheet and the anode sheet, and improving the cell yield.

Description

[Technical field]

[0001] The present application relates to the technical field of batteries, and in particular to an electrode sheet position deviation control method, device, electrode sheet, cell, and battery. [Background technology]

[0002] With the development of electronic products and the continuous improvement of battery-related technologies, people's performance requirements for batteries are becoming higher and higher. As an important component of a battery, the electrode sheet affects the charge and discharge efficiency of the battery. When stacking, it is necessary to ensure that the cathode sheet is between the two cuts of the anode sheet. If the anode cut is not accurately determined, the cathode sheet will exceed the anode cut, causing the electrode sheets to be unable to stack naturally and the cathode sheet and anode sheet to be misaligned, which will cause safety issues for the battery. Therefore, improving the problem of poor alignment between the cathode sheet and the anode sheet is of great significance to improving the yield of cells. Summary of the Invention [Problem to be solved by the invention]

[0003] The embodiments of the present application at least partially ameliorate the above problems, effectively reducing the probability of misalignment of the cathode sheet and the anode sheet, and improving the yield of the cells. [Means for solving the problem]

[0004] In order to solve the above technical problems, the embodiments of the present application adopt the following technical solutions: In a first aspect, the embodiments of the present application provide an electrode sheet position deviation control method, the method comprising: obtaining position information of a cutout hole of an anode sheet; setting A first sheet width corresponding to the anode sheet based on the width deviation obtaining tab position information of the cathode sheet; and calculating the tab position information and the setting A second sheet width corresponding to the cathode sheet based on the width. deviation Calculating, when performing a lamination process on the anode sheet and the cathode sheet, adjusting the sheet feeding position of the cathode sheet based on the first sheet width deviation and compensating for the slice width of the cathode sheet based on the second sheet width deviation to hold the edges of the cathode sheet and the anode sheet after lamination at a predetermined distance. The embodiments provided in the present application hold the edges of the cathode sheet and the anode sheet after lamination at a predetermined distance, avoid misalignment defects between the cathode sheet and the anode sheet, improve the yield of the cell, and can compensate each cathode sheet respectively, perform differential deviation compensation on each cathode sheet, and finally maintain the sheet width of the cathode sheet with good consistency.

[0005] In some embodiments, calculating the first sheet width corresponding to the anode sheet based on the position information of the notch hole and the width of the anode sheet setting includes, when the sensor detects the notch hole of the anode sheet, obtaining the detection width of the previous anode sheet in the two adjacent anode sheets based on the distance between the notch holes of the two adjacent anode sheets, and calculating the sheet width of the previous anode sheet based on the detection width and the width of the anode sheet deviation This embodiment detects the notch hole of the anode sheet by the sensor, calculates the sheet width of the anode sheet based on the detected notch hole information, thereby compensating the sheet feeding position of the cathode sheet based on the sheet width, and thereby can compensate the sheet feeding position of each cathode sheet, avoid misalignment defects between the cathode sheet and the anode sheet, and improve the yield of the cell. setting deviation deviation deviation

[0006] In some embodiments, the method includes the set position corresponding to the notch hole set position in the image captured by the camera error ​​​​If the sensor does not detect the notch hole of the anode sheet and the currently detected anode sheet satisfies the shooting condition of the camera, an image of the currently detected anode sheet is acquired, and a detected sheet width deviation of the currently detected anode sheet is acquired based on the image of the notch. error and calculating a difference value between the detected sheet width deviation of the anode sheet and the detected sheet width deviation of the cathode sheet, the difference value being the sheet width deviation of the anode sheet currently detected. In this embodiment, when the sensor detection is invalid, the deviation calculation is performed by the camera, so that the alignment error between the cathode sheet and the anode sheet can be effectively avoided, and the cell yield can be improved.

[0007] In some embodiments, a setting position corresponding to a cutout hole setting position in an image captured by the camera. error When the sensor detects the cutout hole of the anode sheet for the first time and the photographing condition of the camera is satisfied, a cut image corresponding to the cutout hole is obtained, and a set position is obtained based on the cut image and the set position of the cutout hole of the anode sheet. error In this embodiment, the cut image and the cutout hole setting position of the anode sheet are used to obtain a setting position corresponding to the cutout hole setting position of the image captured by the camera. error and acquiring the set position error can be accurately obtained, so that the sheet width deviation of the anode sheet can be accurately calculated and the sheet feeding position of the cathode sheet can be accurately compensated.

[0008] In some embodiments, when the sensor detects the cutout hole of the anode sheet for the first time, satisfying the photographing condition of the camera includes obtaining a first distance between the sensor and the camera, obtaining position information when the sensor detects the cutout hole of the anode sheet for the first time, the position information including a second distance, and determining that the photographing condition of the camera is satisfied when the distance corresponding to the position information of the cutout hole currently photographed by the camera is equal to the sum of the first distance and the second distance. This embodiment limits the photographing condition when the sensor detects the cutout hole of the anode sheet for the first time, so that the camera can be triggered to photograph based on the condition, and even if the sensor detection is invalid, the sheet width corresponding to the anode sheet can be determined. deviation can be obtained, thereby realizing the sheet feeding position of the cathode sheet being compensated.

[0009] In some embodiments, when the sensor does not detect the anode sheet cutout hole for the first time, the photographing condition of the camera is satisfied by obtaining a cut image of a previously detected anode sheet cutout hole corresponding to the current anode sheet cutout hole, the previously detected cut image of the anode sheet cutout hole including a first cut distance; obtaining a cut image of a currently detected anode sheet cutout hole corresponding to the current anode sheet cutout hole, the cut image of the previously detected anode sheet cutout hole including a first cut distance; obtaining a cut image of a currently detected anode sheet cutout hole corresponding to the current anode sheet cutout hole including a second cut distance; and obtaining a cut image of a currently detected anode sheet cutout hole corresponding to the current anode sheet cutout hole including a second cut distance; setting and determining that the camera capture condition is satisfied when the sensor detects the cutout hole of the anode sheet for the first time, so that the camera can be triggered to capture images based on the condition. Even if the sensor detection is invalid, the sheet width corresponding to the anode sheet can be determined to be equal to the sum of the widths. deviation can be obtained, thereby realizing the sheet feeding position of the cathode sheet being compensated.

[0010] In some embodiments, the tab position information and the cathode sheet setting A second sheet width corresponding to the cathode sheet based on the width. deviationcalculating the average width of the predetermined threshold number of cathode sheets based on the recorded tab position information when the sensor detects tabs of the cathode sheets; when the number of tabs detected by the sensor is greater than a predetermined threshold, calculating the average width of the predetermined threshold number of cathode sheets based on the recorded tab position information; setting A difference value between the sheet width of the cathode sheet and the average width is calculated, and the difference value is the sheet width of the cathode sheet. deviation This embodiment detects the tab of the cathode sheet, and obtains the width of the cathode sheet based on the tab, thereby obtaining the sheet width. deviation By calculating the above, the width of the cathode sheet can be uniformly compensated, and not only can the width of the cathode sheet be well matched, but also the tab of the cathode sheet can be detected, the width of the cathode sheet can be dynamically adjusted, and the position deviation of the tab can be corrected.

[0011] In a second aspect, an embodiment of the present application provides an electrode sheet deviation control device, the device comprising: a first electrode sheet deviation control device for controlling a displacement of an electrode sheet by acquiring position information of a notch hole of the electrode sheet; setting A first sheet width corresponding to the anode sheet based on the width deviation a first calculation module for obtaining tab position information of a cathode sheet, and calculating a tab position information and a tab position information of the cathode sheet; setting A second sheet width corresponding to the cathode sheet based on the width. deviation and a second calculation module for calculating the first sheet width when laminating the anode sheet and the cathode sheet. deviation The sheet feed position of the cathode sheet is adjusted based on the second sheet width deviationand an electrode sheet misalignment processing module for maintaining the edges of the cathode sheet and the anode sheet at a predetermined distance after stacking by compensating the slice width of the cathode sheet based on the above. The embodiment provided in the present application maintains the edges of the cathode sheet and the anode sheet at a predetermined distance after stacking, avoids the misalignment of the cathode sheet and the anode sheet, improves the cell yield, and can compensate each cathode sheet respectively, compensate for the difference deviation of each cathode sheet, and finally maintain the sheet width of the cathode sheet at a good consistency.

[0012] In some embodiments, the first calculation module is configured to obtain a detection width of a previous anode sheet in the two adjacent anode sheets based on a distance between the cutout holes of the two adjacent anode sheets when the sensor detects the cutout hole of the anode sheet, and to obtain a detection width of the previous anode sheet in the two adjacent anode sheets based on a distance between the cutout holes of the two adjacent anode sheets, and to obtain a detection width of the previous anode sheet in the two adjacent anode sheets based on a distance between the cutout holes of the two adjacent setting the sheet width of the previous anode sheet based on the width deviation In this embodiment, the sensor detects the notch hole of the anode sheet, and calculates the sheet width of the anode sheet based on the detected notch hole information. deviation Calculate the sheet width deviation The sheet feeding position of the cathode sheet is compensated based on the above formula, so that the sheet feeding position of each cathode sheet can be compensated, so that the positional deviation of the cathode sheet and the anode sheet can be avoided, and the yield of the cell can be improved.

[0013] In some embodiments, the first calculation module is configured to calculate a setting position corresponding to a cutout hole setting position in an image captured by a camera. error a first acquisition unit for acquiring the detected sheet width deviation of the currently detected anode sheet based on the cut line image when the sensor does not detect the cut hole of the anode sheet and the currently detected anode sheet satisfies the shooting condition of the camera; and a second acquisition unit for acquiring the detected sheet width deviation of the currently detected anode sheet based on the cut line image when the sensor does not detect the cut hole of the anode sheet and the currently detected anode sheet satisfies the shooting condition of the camera. errorand a second calculation unit for calculating a difference value between the sheet width deviation of the currently detected anode sheet and the sheet width deviation of the currently detected anode sheet. In this embodiment, when the sensor detection is invalid, the deviation calculation is performed by the camera, so that the alignment error between the cathode sheet and the anode sheet can be effectively avoided, and the cell yield can be improved.

[0014] In some embodiments, the first acquisition unit specifically acquires a cut image corresponding to the cut hole when the sensor detects the cut hole of the anode sheet for the first time and satisfies the shooting condition of the camera, and determines a set position according to the cut image and the set position of the cut hole of the anode sheet. error In this embodiment, the cut image and the cutout hole setting position of the anode sheet are used to obtain a setting position corresponding to the cutout hole setting position of the image captured by the camera. error and acquiring the set position error can be accurately obtained, so that the sheet width deviation of the anode sheet can be accurately calculated and the sheet feeding position of the cathode sheet can be accurately compensated.

[0015] In some embodiments, when the sensor detects the cutout hole of the anode sheet for the first time, satisfying the photographing condition of the camera includes obtaining a first distance between the sensor and the camera, obtaining position information when the sensor detects the cutout hole of the anode sheet for the first time, the position information including a second distance, and determining that the photographing condition of the camera is satisfied when the distance corresponding to the position information of the cutout hole currently photographed by the camera is equal to the sum of the first distance and the second distance. This embodiment limits the photographing condition when the sensor detects the cutout hole of the anode sheet for the first time, so that the camera can be triggered to photograph based on the condition, and even if the sensor detection is invalid, the sheet width corresponding to the anode sheet can be determined. deviation can be obtained, thereby realizing the sheet feeding position of the cathode sheet being compensated.

[0016] In some embodiments, other than when the sensor detects the anode sheet cutout hole for the first time, satisfying the photographing condition of the camera includes obtaining a cut image of a previously detected anode sheet cutout hole corresponding to the current anode sheet cutout hole, the previously detected anode sheet cutout image including a first cut distance; obtaining a cut image of a currently detected anode sheet cutout hole corresponding to the current anode sheet cutout hole, the previously detected anode sheet cutout image including a first cut distance; obtaining a cut image of a currently detected anode sheet cutout hole corresponding to the current anode sheet cutout hole, the previously detected anode sheet cutout image including a second cut distance; and obtaining a cut image of a currently detected anode sheet cutout hole corresponding to the current anode sheet cutout hole corresponding to the first cut distance. setting and determining that the camera capture condition is satisfied when the sensor detects the cutout hole of the anode sheet for the first time, and the camera captures the image based on the condition. deviation can be obtained, thereby realizing the sheet feeding position of the cathode sheet being compensated.

[0017] In some embodiments, the second calculation module is specifically configured to: when a sensor detects a tab of the cathode sheet, record position information corresponding to each of the tabs; when the number of tabs detected by the sensor is greater than a predetermined threshold, calculate an average width of the predetermined threshold number of cathode sheets based on the recorded tab position information; and setting A difference value between the sheet width of the cathode sheet and the average width is calculated, and the difference value is the sheet width of the cathode sheet. deviation In this embodiment, the tab of the cathode sheet is detected, and the width of the cathode sheet is obtained based on the tab, so that the sheet width is deviation By calculating the above, the width of the cathode sheet can be uniformly compensated, and not only can the width of the cathode sheet be well matched, but also the tab of the cathode sheet can be detected, the width of the cathode sheet can be dynamically adjusted, and the position deviation of the tab can be corrected.

[0018] In a third aspect, an embodiment of the present application provides an electrode sheet position deviation control device, the device includes a sensor, a camera, and a controller, the controller is connected to the sensor and the camera, the sensor is used to detect position information of a notch hole of an anode sheet and detect tab position information of a cathode sheet, the camera is used to take a cut image corresponding to the anode sheet, the controller includes at least one processor and a memory communicatively connected to the at least one processor, the memory stores instructions executable by the at least one processor, the instructions are executed by the at least one processor, and the at least one processor executes the electrode sheet position deviation control method as described above based on the cut position information, the tab position information, and the cut image. The embodiment provided by the present application maintains the edge of the cathode sheet and the anode sheet at a predetermined distance after superimposition, avoids the position deviation of the cathode sheet and the anode sheet, improves the yield of the cell, and can compensate each cathode sheet respectively, can perform differential deviation compensation for each cathode sheet, and finally maintains the sheet width of the cathode sheet in good consistency.

[0019] In a fourth aspect, an embodiment of the present application provides an electrode sheet, the electrode sheet including an anode sheet and a cathode sheet, the anode sheet and the cathode sheet are misaligned by the electrode sheet misalignment control method as described above, so that the edges of the cathode sheet and the anode sheet after being superimposed are kept at a predetermined distance. The edges of the cathode sheet and the anode sheet of the electrode sheet provided by the embodiment of the present application can be kept at a predetermined distance, and the probability of misalignment is low.

[0020] In a fifth aspect, the present embodiment provides a cell, comprising a separator, and a cathode sheet and an anode sheet as described above. The cell provided by the present embodiment has good yield.

[0021] In a sixth aspect, the present embodiment provides a battery, comprising an electrolyte, an outer can and the cell as described above. The battery provided by the present embodiment has high safety and high stability.

[0022] The present invention provides an electrode sheet position deviation control method, device, electrode sheet, cell, and battery, and is capable of detecting the position information of the cutout hole of the anode sheet and the position information of the anode sheet. setting The width of the first piece corresponds to the anode sheet by the width deviation Calculate the tab position information of the cathode sheet and the setting The width of the second piece corresponds to the width of the cathode sheet. deviation Calculate the first sheet width during lamination process. deviation The sheet feed position of the cathode sheet is compensated for by the second sheet width deviation The embodiment provided in the present application can keep the edges of the cathode sheet and the anode sheet at a predetermined distance after stacking, avoid the alignment failure of the cathode sheet and the anode sheet, and improve the cell yield, and the compensation method in the embodiment of the present application can compensate each cathode sheet separately, and compensate for the difference deviation of each cathode sheet, and finally keep the sheet width of the cathode sheet in good consistency. [Brief description of the drawings]

[0023] One or more embodiments are illustratively described with reference to accompanying drawings, and these illustrative descriptions are not intended to be limiting of the embodiments, and elements having the same reference numerals in the drawings are shown as similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise specified. [Figure 1] FIG. 1 is a structural schematic diagram of a laminator provided in an embodiment of the present application. [Diagram 2] FIG. 2 is a schematic diagram of the cutout image provided by an embodiment of the present application. [Diagram 3] FIG. 3 is a structural schematic diagram of an electrode sheet position deviation control device provided by an embodiment of the present application. [Figure 4] FIG. 4 is a flowchart of a method for controlling electrode sheet position deviation provided by an embodiment of the present application. [Diagram 5] FIG. 5 is a flowchart of a method for calculating the first sheet width deviation provided in the electrode sheet position deviation control method provided by the embodiment of the present application. [Figure 6] FIG. 6 is a flowchart of a method for calculating the second sheet width deviation provided in the electrode sheet position deviation control method provided by the embodiment of the present application. [Figure 7] FIG. 7 is a schematic structural diagram of an electrode sheet position deviation control device provided by the embodiment of the present application.

Embodiments for Carrying Out the Invention

[0024] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the drawings. The following embodiments are only for more clearly explaining the technical solution of the present application, and therefore are only examples and cannot limit the protection scope of the present application thereby.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used in this specification are only used to explain specific embodiments and are not intended to limit the present application. The terms "comprising" and "having" and any variations thereof in the description of the specification and claims of the present application and the above drawings are intended to cover non-exclusive "comprising".

[0026] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects, and should not be understood as indicating relative importance or implying or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features.

[0027] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in combination with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in each location in the specification does not necessarily refer to the same embodiment, nor is it an exclusive, independent, or alternative embodiment with respect to other embodiments. Those skilled in the art can explicitly and implicitly understand that the embodiment described in this specification can be combined with other embodiments.

[0028] As shown in Fig. 1, it is a structural schematic diagram of a laminator provided in an embodiment of the present application. The laminator 10 includes an anode sheet 100, a separator 110, a cathode sheet 120, a sensor 200, a camera 210, a cutter 220 and a sheet feeding mechanism 230.

[0029] In the field of battery stacking, a separator 110 is generally used to separate the anode sheet 100 and the cathode sheet 120, and the anode sheet 100 and the cathode sheet 120 are stacked one after the other to form a cell with a certain thickness. During the stacking process, the edge distance of the anode sheet 100 and the cathode sheet 120 is required to be kept within a required range, so as to avoid the anode sheet 100 and the cathode sheet 120 from being misaligned. The related art detects the anode margin position of each cell by a sensor, which is the extra blank position of the anode sheet after the anode sheet and the cathode sheet in the cell are stacked, and also performs position compensation for the entire cathode sheet feed. The related art cannot perform differential deviation compensation for each electrode sheet, and cannot perform deviation calculation after the sensor detection expires, which causes sheet feed position deviation failure. In view of this, the embodiment of the present application compensates for the sheet feed position of the cathode sheet 120 by detecting the position of the notch hole of the anode sheet 100, and when the sensor 200 corresponding to the anode sheet 100 cannot detect the position of the notch hole of the anode sheet 100, the detected sheet width of the anode sheet 100 is detected based on the image captured by the camera 210. deviation1 is obtained, and the sheet feeding position of the cathode sheet 120 is compensated for. In addition, the tab position of the cathode sheet 120 is detected, and the sheet width of the cathode sheet 120 is obtained based on the tab position information, and the sheet width of the cathode sheet 120 is compensated for by the tab, so that the sheet width of the cathode sheet 120 and the anode sheet 100 can be ensured to be within a predetermined range. In addition, the tab misalignment is corrected based on the detected tab position. The lamination machine 10 shown in FIG. 1 can be applied to the electrode sheet misalignment control method provided by the embodiment of the present application. When the lamination machine 10 operates, after the anode sheet 100 and the separator 110 that already have cuts and notches are combined, the sensor 200 constantly detects and positions the notches, and at the same time, the camera 210 photographs the notches to compare the notches of the anode sheet 100 with the camera 210. setting Position deviation The sensor 200 corresponding to the cathode sheet 120 detects and positions the tab of the cathode sheet 120, and identifies the sheet width of the cathode sheet. deviation After calculating, the cutter 220 cuts the calculated cathode sheet deviation The sheet width of the cathode sheet 120 is compensated based on the above, and the cathode sheet 120 of the appropriate width is cut out. deviation The sheet feed position of the cathode sheet 120 is compensated based on the above. deviation is the position information of the notch hole of the anode sheet detected by the sensor 200, and setting The first sheet width of the anode sheet calculated based on the width deviation The above may be setting The width is a set value of the anode sheet width, which can be set based on the process, and the detected width of the anode sheet is obtained through the image taken by the camera 210, and the first sheet width is calculated based on the detected width. deviation The first sheet width can be obtained. deviation refers to a value for compensating the sheet feeding position of the cathode sheet 120, which is used to compensate the sheet feeding position of the cathode sheet 120. This allows the cathode sheet 120 to be transported to the correct position of the anode sheet 100.

[0030] Here, the sensor 200 includes a plurality of sensors, which are installed at positions corresponding to the anode sheet 100 and the cathode sheet 120, respectively, and the sensor 200 is used to detect the position information of the notch hole of the anode sheet 100 and the position information of the tab of the cathode sheet 120.

[0031] Here, the camera 210 may be a CCD (Charge Coupled Device) camera. The camera 210 is used to capture a cut image corresponding to the anode sheet 100. As shown in FIG. 2, the cut image includes a cut and a notch hole. The cut is a mark that penetrates the anode sheet 100 and is perpendicular to the material conveying direction. The cut can divide the number of anode sheets 100. For example, the anode sheet between two adjacent cuts is one anode sheet. The notch hole is a hole provided at the cut, and the length of the hole may be smaller than the length of the cut. Generally, the notch hole overlaps the cut.

[0032] As shown in Fig. 3, Fig. 3 is a structural schematic diagram of an electrode sheet position deviation control device provided by an embodiment of the present application, and the electrode sheet position deviation control device 30 includes the above-mentioned lamination machine 10, a controller 300, and a host machine 400. The controller 300 is communicatively connected to the lamination machine 10 and the host machine 400, respectively, and the controller 300 may be installed independently of the lamination machine 10 as a separate unit, or may be integrated into the lamination machine 10 as a part of the lamination machine 10.

[0033] In the embodiment of the present application, the lamination machine 10 detects the notch hole position information of the anode sheet 100 and the tab position information of the cathode sheet 120 by the sensor 200 corresponding to the anode sheet 100, and further detects the cut image of the anode sheet 100 by the camera 210. Here, the controller 300 can control the sensor 200 corresponding to the anode sheet 100 to detect the notch hole position of the anode sheet 100 and the sensor 200 corresponding to the cathode sheet 120 to detect the tab position by sending a command to the lamination machine 10, and the controller 300 can further control the camera 210 to take an image by sending a command to the lamination machine 10. The cut image taken by the camera 210 can be transmitted to the host machine 400, and the host machine 400 processes the cut image to obtain a cut deviation, and the cut deviation is a deviation corresponding to the cut hole setting position of the image taken by the camera, i.e., the setting position error and sends the cut deviation to a controller 300. The controller 300 obtains the notch hole position information, the tab position information and the cut image, and controls the position deviation of the electrode sheet based on the notch hole position information, the tab position information and the cut image to ensure that the cathode sheet 120 is positioned at an accurate position of the anode sheet 100. For example, the controller 300 can obtain notch hole position information of an anode sheet, and calculate a first sheet width deviation corresponding to the anode sheet based on the notch hole position information and a set width of the anode sheet, where the set width is a set value of the anode sheet width, which can be set based on a process; obtain tab position information of a cathode sheet, and calculate a second sheet width deviation corresponding to the cathode sheet based on the tab position information and the set width of the cathode sheet, which is used to maintain the edges of the cathode sheet and the anode sheet at a predetermined distance after being laminated, by adjusting the sheet feed position of the cathode sheet based on the first sheet width deviation and compensating the slice width of the cathode sheet based on the second sheet width deviation when performing a lamination process on the anode sheet and the cathode sheet.

[0034] Here, the controller 300 may be a programmable logic controller (PLC). The host computer 400 may be a desktop computer, a notebook computer, a tablet computer, a smartphone, or other device.

[0035] Specifically, as shown in Fig. 3, the controller 300 includes one or more processors 310 and a memory 320, and Fig. 3 shows an example of one processor 310. The processor 310 and the memory 320 may be connected by a bus or other methods, and Fig. 3 shows an example of the processor 310 and the memory 320 being connected by a bus.

[0036] The memory 320 is a non-volatile computer readable storage medium and can be used to store non-volatile software programs, non-volatile computer executable programs and modules, such as program instructions / modules corresponding to the electrode sheet misalignment control method in the embodiments of the present application. The processor 310 executes the non-volatile software programs, instructions and modules stored in the memory 320 to perform various functional applications and data processing of the controller 300, i.e., to realize the electrode sheet misalignment control method in the method embodiments below. For example, the method shown in FIG. 4 is executed.

[0037] The memory 320 may include a program storage area and a data storage area, and the program storage area may store an operating system and an application program required for at least one function. The data storage area may store the data generated based on the use of the electrode sheet positional deviation control device. The memory 320 may also include a high-speed random access memory, and may further include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile memory. In some embodiments, the memory 320 may optionally include a memory located remotely to the processor 310, and these remotely located memories may be connected to the electrode sheet positional deviation control device via a network, examples of which include, but are not limited to, the Internet, a local area network, a mobile communication network, an internal corporate network, and combinations thereof.

[0038] The one or more modules, when stored in memory 320 and executed by one or more processors 310, perform the electrode sheet misalignment control method in any of the method embodiments described below.

[0039] The electrode sheet position deviation control device 30 provided in the embodiments of the present application is used to execute the electrode sheet position deviation control method provided in the embodiments of the present application, and has functional modules and beneficial effects corresponding to the execution method, and technical details not described in detail in the embodiments of the present application may refer to the electrode sheet position deviation control method provided in the embodiments of the present application.

[0040] As shown in Fig. 4, Fig. 4 is a flow chart of an electrode sheet position deviation control method provided by an embodiment of the present application. This method can be applied to the devices shown in Fig. 1 and Fig. 3. The method can perform differential deviation compensation for each electrode sheet, and can also calculate the deviation of the electrode sheet and compensate the electrode sheet when the sensor detection is invalid. Specifically, the method can include the following steps:

[0041] S11, obtaining notch hole position information of the anode sheet, and comparing the notch hole position information and the anode sheet setting A first sheet width corresponding to the anode sheet based on the width deviation Calculate.

[0042] The electrode sheets include an anode sheet (also called a negative electrode sheet) and a cathode sheet (also called a positive electrode sheet), the positive electrode sheet having a first coating area coated with a positive electrode active material and a positive electrode tab not coated with the positive electrode active material, and the negative electrode sheet having a second coating area coated with a negative electrode active material and a negative electrode tab not coated with the negative electrode active material. The cell has a positive electrode tab group including a plurality of positive electrode tabs and a negative electrode tab group including a plurality of negative electrode tabs. The electrode sheets have a plurality of tabs spaced apart.

[0043] In the embodiment of the present application, each anode sheet is provided with a notch hole, and the shape and size of the notch hole are not particularly limited in the embodiment of the present application. The position information of the notch hole refers to the specific position of the notch hole in the electrode sheet, and the position information of the notch hole can be detected by a sensor. The notch hole is a hole penetrating the anode sheet, and when the sensor detects the notch hole, if there is light passing through a part of the anode sheet and there is no light passing through another part, the sensor can detect the position of the notch hole, i.e., the position information of the notch hole, based on this condition. The purpose of detecting the notch hole is to obtain the width of the anode sheet, which can be understood as the distance between two adjacent notches in the material conveying direction of the laminator, and the sheet feed position of the cathode sheet can be accurately determined based on the obtained width of the anode sheet. The anode sheet setting The width refers to the set value of the width of the anode sheet, which is set based on the process. deviation is a value for compensating for the sheet feed position of the cathode sheet. The sheet feed position refers to the position where the cathode sheet is placed during the lamination process, and by compensating for the position, the cathode sheet is placed at an accurate position. Here, the first sheet width deviationis used to respectively compensate the sheet feeding position of each cathode sheet other than the first cathode sheet. deviation Since the sheet feeding position of the first cathode sheet is confirmed when the sensor detects it for the first time, the first cathode sheet does not need to perform sheet feeding position compensation.

[0044] In the embodiment of the present application, a sensor detects position information of a notch hole in an anode sheet, and the position information of the notch hole and the setting the first sheet width based on the width deviation However, when the notch hole is manufactured, the notch hole is not completely punched out, which causes the sensor to be unable to detect the notch hole, or the material belt is shifted, which causes the sensor to be unable to detect the notch hole even when the notch hole is not in the detection range of the sensor. At this time, the detection width of the anode sheet is obtained from the image taken by the camera, and the first sheet width is calculated. deviation can be calculated.

[0045] Specifically, as shown in FIG. 5, the position information of the notch hole and the setting A first sheet width corresponding to the anode sheet based on the width deviation Calculating x includes the following:

[0046] S111, a setting position corresponding to the notch hole setting position of the image captured by the camera error Get the.

[0047] When the sensor detects the cutout hole of the anode sheet for the first time, that is, when the anode sheet is currently the first anode sheet, the camera is triggered to take a picture at a fixed distance. The captured image is an image including a cut. Based on the detection of the image, cutout position information is obtained. Further, a deviation is calculated based on the cutout position information and the set cutout. The deviation is the set position corresponding to the cutout hole set position in the image captured by the camera. errorHere, the set incision refers to incision information already detected and acquired when making the incision. The incision position information refers to the position where the incision is located in the image currently captured by the camera. The deviation can be calculated based on the pixel point of the incision position and the pixel point corresponding to the set incision.

[0048] The set position error is used to correct the position information of the cut in the image captured by the camera, so that the position of the cut can be accurately determined, i.e., the compensation value of the sheet feeding position of the cathode sheet can be accurately obtained.

[0049] Here, when the sensor detects the cutout hole of the anode sheet for the first time, the camera is triggered to take a picture according to a fixed distance, and the fixed distance refers to meeting one of the conditions for camera photography. Specifically, a first distance between the sensor and the camera is obtained, the first distance is related to the positions of the sensor and the camera, and refers to the distance from the sensor to the camera, and specifically refers to the distance between the positions of the sensor and the camera projected on the anode sheet in a direction perpendicular to the anode sheet. Position information is obtained when the sensor corresponding to the anode sheet detects the cutout hole of the anode sheet for the first time, and the position information includes a second distance, and the second distance refers to the distance between the cutout hole position and the sensor. When the distance corresponding to the position information of the cutout hole currently photographed by the camera is equal to the sum of the first distance and the second distance, it is determined that the camera photography condition is met, i.e., the fixed distance is met, and the camera is triggered to take a picture at this time.

[0050] S112, determining whether the sensor detects the notch hole of the anode sheet.

[0051] If a cutout hole in the anode sheet is detected, the following step S113 is executed. If a cutout hole in the anode sheet is not detected and the currently detected anode sheet satisfies the photographing conditions of the camera, the following steps S114 and S115 are executed.

[0052] Here, if the notch hole is not completely punched out during manufacturing, or if the notch hole is not within the detection range of the sensor due to a deviation of the material belt, etc., this will cause the sensor to not detect the notch hole of the anode sheet. If the notch hole of the anode sheet is detected, the sensor will calculate the first sheet width based on the information of the detected notch hole. deviation If no cutout hole is detected in the anode sheet, the first sheet width is obtained based on the cut image captured by the camera. deviation Thus, the embodiment of the present application can obtain the compensation value of the sheet feeding position of the cathode sheet accurately and reliably, and reduce the probability of sheet feeding position deviation failure.

[0053] S113, obtaining a detection width of a previous anode sheet in the two adjacent anode sheets according to the distance of the notch holes of the two adjacent anode sheets, and setting the sheet width of the previous anode sheet based on the width deviation Calculate the sheet width deviation can be understood as the distance along the material conveying direction of the laminator.

[0054] Here, the detected width refers to the width of the anode sheet detected in real time based on the notch hole. setting A difference value between the width and the first sheet width is calculated, and the difference value is the first sheet width. deviation It is.

[0055] For example, if you need to request the sheet width difference value of the first anode sheet, you can set the first detection width based on the second and first notch hole positions.

number

number

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number

[0056] S114, obtaining a cut image of the notch hole of the currently detected anode sheet, and detecting a detection sheet width of the currently detected anode sheet based on the cut image. deviation Get the.

[0057] The cut image can be acquired by photographing the cut image with the CCD camera. deviation is the sheet width of the anode sheet detected based on the image taken by the camera. deviation The detection sheet width deviation The method of acquiring the detection width is based on the detection width of the anode sheet acquired from the cut image. setting A difference value between the detection sheet width and the detection sheet width is calculated, and the difference value is deviation It is.

[0058] Here, the currently detected anode sheet satisfying the photographing condition of the camera includes obtaining a cutout image of a previously detected anode sheet cutout hole corresponding to a current anode sheet cutout hole, the previously detected cutout image of the anode sheet cutout hole including a first cutout distance. Obtaining a cutout image of a current anode sheet cutout hole, the currently detected cutout image of the anode sheet cutout hole including a second cutout distance. The second cutout distance is a ratio of the first cutout distance to the anode sheet cutout distance. setting If the sum of the width and the distance is equal to the width, it is determined that the camera's shooting conditions are met. For example, the first cut distance is

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number

[0059] In some embodiments, the detection piece width is measured by a camera. deviation As can be seen from the above, the second

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[0060] S115, the detected sheet width deviation and the set position error A difference value between the measured value and the sheet width deviation of the currently detected anode sheet is calculated.

[0061] The sheet width deviation of the anode sheet is the first sheet width deviation. For example, if the notch hole of the second anode sheet is not detected, the detected sheet width deviation is determined by the above.

number

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[0062] The above two main methods are used to detect and obtain a value for compensating the feeding position of the cathode sheet by the anode sheet, so that the cathode sheet can be placed at the appropriate position of the anode sheet.

[0063] S12, obtaining tab position information of the cathode sheet, and setting A second sheet width corresponding to the cathode sheet based on the width. deviation Calculate.

[0064] The tab position information indicates a specific position of the tab on the cathode sheet, and in the embodiment of the present application, the width of the cathode sheet is obtained by detecting the position of the tab. setting The width is the width of the cathode sheet. setting This refers to the value, which is set according to the process. Second Sheet Width deviation is a value for compensating for the sheet width of the cathode sheet.

[0065] In one embodiment of the present application, as shown in FIG. 6, the tab position information and the cathode sheet setting A second sheet width corresponding to the cathode sheet based on the width. deviation Calculating x includes the following:

[0066] S121, when a sensor detects tabs of the cathode sheet, record position information corresponding to each of the tabs.

[0067] S122, if the number of tabs detected by the sensor is greater than the preset threshold, calculate an average width of the preset threshold number of cathode sheets based on the recorded tab position information.

[0068] S123, the cathode sheet setting The difference between the sheet width and the average width is calculated, and the difference is the sheet width of the cathode sheet. deviation It is.

[0069] Here, the position information corresponding to the tab is the position of the tab on the cathode sheet detected by the sensor, and may be specifically the distance between the sensor and the tab. The preset threshold value may be system custom or manually set, and may be, for example, 10.

[0070] The average width of the cathode sheet can be calculated based on the following formula:

number

number

number

[0071] It is determined whether the number m of the cathode sheets detected by the sensor corresponding to the cathode sheets is greater than k, and if it is greater, the average width is calculated based on the above formula.

[0072] Sheet width of the cathode sheet deviation teeth

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[0073] In the embodiment of the present application, the width of the cathode sheet is obtained based on the tab position information of a set of cathode sheets, for example, 5-10 cathode sheets are a set. The width of the cathode sheet can be more accurately determined by the averaging method, and the sheet width of the cathode sheet can be calculated later. deviation Therefore, the sheet width of the cathode sheet can be accurately compensated. The method for calculating the sheet width of the cathode sheet is not limited to the above-mentioned average method, and other calculation methods, such as an interpolation method, can be adopted.

[0074] In the embodiment of the present application, the cathode sheet width is uniformly compensated by the cathode sheet tab, so that the cathode sheet width is highly consistent, and the cathode sheet width can be dynamically adjusted to further realize tab misalignment control and correct the tab misalignment.

[0075] S13, when laminating the anode sheet and the cathode sheet, the first sheet width deviation The sheet feed position of the cathode sheet is adjusted based on the second sheet width deviation By compensating the slice width of the cathode sheet based on the above, the edges of the cathode sheet and the anode sheet after overlapping are kept at a predetermined distance.

[0076] The lamination process is a process in which the anode sheet and the cathode sheet are separated and sequentially laminated by a machine such as a laminator to form a cell. deviation The sheet feeding position of the cathode sheet can be determined based on the first sheet width of the first anode sheet. deviation determines the sheet feed position of the second cathode sheet, and the first sheet width of the second anode sheet deviation determines the sheet feed position of the third cathode sheet, and thus infers. deviation is used to compensate for the slice width of the cathode sheet, and if the slice width of the set cathode sheet is narrow, the second sheet width deviation If the slice width of the set cathode sheet is wide, the second sheet width is increased. deviation The sheet width of each cathode sheet can be compensated for respectively. Here, the process of adjusting the sheet feed position and the process of compensating for the sheet width of the cathode sheet can be performed simultaneously, and the order of their execution is not limited here.

[0077] Here, the edges of the cathode sheet and the anode sheet after being overlapped maintain a predetermined distance, i.e., the edges of the cathode sheet and the anode sheet after being overlapped and left to stand have a predetermined distance deviation, and the predetermined distance may be 2±0.9 mm.

[0078] The embodiment of the present application provides an electrode sheet misalignment control method, which can maintain the edges of the cathode sheet and the anode sheet at a predetermined distance after stacking, avoid the misalignment of the cathode sheet and the anode sheet, and improve the cell yield. In addition, the compensation method in the embodiment of the present application can compensate each cathode sheet separately, and perform differential deviation compensation for each cathode sheet, so that the sheet width of the cathode sheet can be kept in good consistency. Finally, when the width of the cathode sheet is dynamically adjusted, the tab misalignment control can also be realized, and the tab misalignment can be corrected.

[0079] 7, which is a structural schematic diagram of an electrode sheet position deviation control device provided in an embodiment of the present application. The electrode sheet position deviation control device 40 includes a first calculation module 41, a second calculation module 42 and an electrode sheet position deviation processing module 43.

[0080] The first calculation module 41 obtains the position information of the notch hole of the anode sheet, and calculates the position information of the notch hole and the setting A first sheet width corresponding to the anode sheet based on the width deviation The second calculation module 42 obtains the tab position information of the cathode sheet, and calculates the tab position information and the setting A second sheet width corresponding to the cathode sheet based on the width. deviation The electrode sheet position deviation processing module 43 calculates the first sheet width when laminating the anode sheet and the cathode sheet. deviation The sheet feed position of the cathode sheet is adjusted based on the second sheet width deviation This is used to keep the edges of the cathode sheet and the anode sheet at a predetermined distance after overlapping by compensating the slice width of the cathode sheet based on

[0081] Here, the first calculation module 41 includes a first calculation unit 411, and the first calculation unit 411 obtains a detection width of a previous anode sheet in the two adjacent anode sheets according to the distance between the cutout holes of the two adjacent anode sheets when the sensor detects the cutout hole of the anode sheet, and calculates the detection width and the cutout hole distance of the anode sheet. setting the sheet width of the previous anode sheet based on the width deviation is used to calculate

[0082] In some embodiments, the first calculation module 41 further includes a first acquisition unit 412, a second acquisition unit 413 and a second calculation unit 414. The first acquisition unit 412 is configured to acquire a setting position corresponding to the cutout hole setting position of the image captured by the camera. errorThe second acquisition unit 413 is used to acquire the currently detected cut image of the anode sheet when the sensor does not detect the cut hole of the anode sheet and the currently detected anode sheet meets the shooting conditions of the camera, and obtains the detected sheet width deviation of the currently detected anode sheet based on the cut image. The second calculation unit 414 is used to calculate the detected sheet width deviation and the set position. error and calculate a difference value between the cutout hole and the cutout hole set position of the anode sheet, and the difference value is the sheet width deviation of the currently detected anode sheet. Here, the first acquisition unit 412 specifically acquires a cutout image corresponding to the cutout hole when the sensor detects the cutout hole of the anode sheet for the first time and meets the shooting conditions of the camera, and calculates a cutout image corresponding to the cutout hole according to the cutout image and the set position of the cutout hole of the anode sheet. error is used to obtain

[0083] Here, when the sensor detects the cutout hole in the anode sheet for the first time, satisfying the shooting condition of the camera includes acquiring a first distance between the sensor and the camera, acquiring position information when the sensor detects the cutout hole in the anode sheet for the first time, the position information including a second distance, and determining that the shooting condition of the camera is satisfied when the distance corresponding to the position information of the cutout hole currently being photographed by the camera is equal to the sum of the first distance and the second distance.

[0084] Here, in cases other than the first detection of the cutout hole in the anode sheet by the sensor, the satisfaction of the photographing condition of the camera means obtaining a cutout image of the previously detected cutout hole in the anode sheet corresponding to the current cutout hole in the anode sheet, the cutout image of the previously detected cutout hole in the anode sheet including a first cut distance, obtaining a cutout image of the current cutout hole in the anode sheet, the cutout image of the current cutout hole in the anode sheet including a second cut distance, and the second cut distance being a difference between the first cut distance and the cutout distance of the anode sheet. setting If the sum of the widths is equal to the sum of the widths, it is determined that the camera's shooting conditions are met.

[0085] Here, specifically, when the sensor detects the tab of the cathode sheet, the second calculation module 42 records the position information corresponding to each said tab. When the number of tabs detected by the sensor is greater than a preset threshold, it calculates the average width of the cathode sheets of the number of sheets of the preset threshold based on the recorded position information of the tabs. It calculates the difference value between the width of the cathode sheet and the average width, and the difference value is used as the sheet width of the cathode sheet. setting The difference value between the width of the cathode sheet and the average width is calculated, and the difference value is used as the sheet width of the cathode sheet. deviation of the cathode sheet.

[0086] It should be noted that the above electrode sheet misalignment control device can execute the electrode sheet misalignment control method provided by the embodiments of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For the technical details not described in detail in the embodiments of the electrode sheet misalignment control device, reference can be made to the electrode sheet misalignment control method provided by the embodiments of the present invention.

[0087] The embodiments of the present application provide an electrode sheet, the electrode sheet includes an anode sheet and a cathode sheet, and the anode sheet and the cathode sheet can be subjected to misalignment processing by the above electrode sheet misalignment control method, so that the edges of the cathode sheet and the anode sheet after being overlapped are kept at a predetermined distance. The electrode sheet provided by the embodiments of the present application can ensure that the cathode sheet is in the correct position in the anode sheet, and improve the yield of the electrode sheet.

[0088] The embodiments of the present application provide a cell, and the cell includes a separator and the electrode sheet in the above embodiments. The cell has advantages such as high yield and high stability.

[0089] The embodiments of the present application provide a battery, and the battery includes an electrolyte, an outer can, and the above cell. The battery has advantages such as high yield and high stability.

[0090] Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present application, and are not limited thereto, and in the concept of the present application, the technical features in the above embodiments or different embodiments can be combined, the steps can be realized in any order, and there are many other variations of different aspects of the present invention as described above, and for the sake of brevity, they are not provided in detail, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that it can still modify the technical solutions described in each of the above embodiments, or equivalently replace some of the technical features therein, and these modifications or replacements do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of each of the embodiments of the present application.

Claims

1. An electrode sheet position deviation control method, comprising: The method comprises: Obtaining position information of a notch hole of an anode sheet, and calculating a first sheet width deviation corresponding to the anode sheet based on the position information of the notch hole and a set width of the anode sheet; Obtaining tab position information of a cathode sheet, and calculating a second sheet width deviation corresponding to the cathode sheet based on the tab position information and a set width of the cathode sheet; adjusting a sheet feeding position of the cathode sheet based on the first sheet width deviation and compensating a slice width of the cathode sheet based on the second sheet width deviation when performing a lamination process on the anode sheet and the cathode sheet, thereby maintaining edges of the cathode sheet and the anode sheet at a predetermined distance after being laminated; The electrode sheet is a long electrode sheet being transported. Electrode sheet position deviation control method.

2. Calculating a first sheet width deviation corresponding to the anode sheet based on the position information of the notch hole and the set width of the anode sheet; When the sensor detects the notch hole of the anode sheet, obtaining a detection width of a previous anode sheet in the two adjacent anode sheets based on a distance between the notch holes of the two adjacent anode sheets, and calculating a sheet width deviation of the previous anode sheet based on the detection width and a set width of the anode sheet.

2. The method of claim 1 .

3. The method comprises: When the sensor detects the cutout hole of the anode sheet for the first time and the photographing condition of the first camera is satisfied, obtaining a setting position error corresponding to the cutout hole setting position of the image photographed by the camera; If the sensor does not detect a notch hole in the anode sheet and the anode sheet detected for the nth time satisfies the photographing condition of the second camera, acquiring a cut image of the anode sheet detected for the nth time, and acquiring a deviation of the detected sheet width of the anode sheet detected for the nth time based on the cut image; and calculating a difference value between the detected sheet width deviation and the set position error, the difference value being the sheet width deviation of the anode sheet detected the nth time, where n>1; 3. The method of claim 2 .

4. Obtaining a setting position error corresponding to the notch hole setting position of the image captured by the camera, When the sensor detects the cutout hole of the anode sheet for the first time and the photographing condition of the first camera is satisfied, acquiring a cut image corresponding to the cutout hole, and acquiring a set position error based on the cut image and the set position of the cutout hole of the anode sheet.

4. The method according to claim 3 .

5. When the sensor detects the cutout hole of the anode sheet for the first time, the photographing condition of the first camera is satisfied. obtaining a first distance between the sensor and the camera; obtaining position information when the sensor detects the cutout hole of the anode sheet for the first time, the position information including a second distance; and determining that a camera photographing condition is satisfied when a distance corresponding to the position information of the notch hole photographed by the camera is equal to a sum of the first distance and the second distance; The second distance is the distance between the position of the notch hole and the sensor.

5. The method of claim 4.

6. The method comprises: When the sensor detects the notch hole in the anode sheet for the mth time, the photographing condition of the third camera is satisfied. Obtaining a cut image of the (m-1)th detected anode sheet cutout hole corresponding to the mth anode sheet cutout hole, the (m-1)th detected anode sheet cutout hole image including a first cut distance; obtaining a cut image of the cut hole of the mth anode sheet, the cut image of the cut hole of the mth anode sheet including a second cut distance, m>1; and determining that a camera capture condition is met when the second cut distance is equal to the sum of the first cut distance and a set width of the anode sheet; The first cut distance and the second cut distance are the distances between the cut of the anode sheet photographed by the camera and the same origin.

3. The method of claim 2 .

7. calculating a second sheet width deviation corresponding to the cathode sheet based on the tab position information and the set width of the cathode sheet; when the sensor detects tabs of the cathode sheet, recording position information corresponding to each of the tabs; If the number of tabs detected by the sensor is greater than a preset threshold, calculating an average width of the preset threshold number of cathode sheets based on the recorded tab position information; and calculating a difference value between the set width and the average width of the cathode sheet, the difference value being the sheet width deviation of the cathode sheet; 7. The method according to any one of claims 1 to 6.

8. An electrode sheet position deviation control device, The apparatus comprises: a first calculation module for obtaining position information of a notch hole of an anode sheet, and calculating a first sheet width deviation corresponding to the anode sheet according to the position information of the notch hole and a set width of the anode sheet; a second calculation module for obtaining tab position information of a cathode sheet, and calculating a second sheet width deviation corresponding to the cathode sheet based on the tab position information and a set width of the cathode sheet; an electrode sheet position deviation processing module for adjusting a sheet feeding position of the cathode sheet based on the first sheet width deviation and compensating a slice width of the cathode sheet based on the second sheet width deviation when performing a lamination process on the anode sheet and the cathode sheet, thereby maintaining edges of the cathode sheet and the anode sheet after being laminated at a predetermined distance, The electrode sheet is a long electrode sheet being transported. An electrode sheet position deviation control device comprising:

9. The first computing module: a first calculation unit for obtaining a detection width of a previous anode sheet in the two adjacent anode sheets based on a distance between the cutout holes of the two adjacent anode sheets when the sensor detects the cutout hole of the anode sheet, and calculating a sheet width deviation of the previous anode sheet based on the detection width and a set width of the anode sheet.

9. The apparatus of claim 8.

10. The first computing module: a first acquisition unit for acquiring a setting position error corresponding to the setting position of the notch hole in the image captured by the camera when the sensor detects the notch hole of the anode sheet for the first time and satisfies the photographing condition of the first camera; a second acquisition unit for acquiring a cut image of the anode sheet detected for the nth time when the sensor does not detect a cut hole of the anode sheet and the anode sheet detected for the nth time satisfies the photographing condition of the second camera, and acquiring a detected sheet width deviation of the anode sheet detected for the nth time based on the cut image; a second calculation unit for calculating a difference value between the detected sheet width deviation and the set position error, the difference value being the sheet width deviation of the anode sheet detected the nth time, where n>1; 10. The apparatus of claim 9.

11. The first acquisition unit specifically includes: When the sensor detects the cutout hole of the anode sheet for the first time and the photographing condition of the first camera is satisfied, a cut image corresponding to the cutout hole is obtained, and a setting position error is obtained based on the cut image and the setting position of the cutout hole of the anode sheet.

11. The apparatus of claim 10.

12. When the sensor detects the cutout hole in the anode sheet for the first time, the photographing condition of the first camera is satisfied. obtaining a first distance between the sensor and the camera; obtaining position information when the sensor detects the cutout hole of the anode sheet for the first time, the position information including a second distance; and determining that a camera photographing condition is satisfied when a distance corresponding to the position information of the notch hole photographed by the camera is equal to a sum of the first distance and the second distance; The second distance is the distance between the position of the notch hole and the sensor.

12. The apparatus of claim 11 .

13. The first calculation module: When the sensor detects the notch hole in the anode sheet for the mth time, the photographing condition for the third camera is satisfied. Obtaining a cut image of the (m-1)th detected anode sheet cutout hole corresponding to the mth anode sheet cutout hole, the (m-1)th detected anode sheet cutout hole image including a first cut distance; obtaining a cut image of the cut hole of the mth anode sheet, the cut image of the cut hole of the mth anode sheet including a second cut distance, m>1; and determining that a camera capture condition is met when the second cut distance is equal to the sum of the first cut distance and a set width of the anode sheet; The first cut distance and the second cut distance are the distances between the cut of the anode sheet photographed by the camera and the same origin.

10. The apparatus of claim 9.

14. The second calculation module specifically includes: when the sensor detects tabs of the cathode sheet, recording position information corresponding to each of the tabs; If the number of tabs detected by the sensor is greater than a preset threshold, calculating an average width of the preset threshold number of cathode sheets based on the recorded tab position information; and used to calculate the difference value between the set width and the average width of the cathode sheet, and the difference value is the sheet width deviation of the cathode sheet The apparatus according to any one of claims 8 to 13, characterized in that

15. An electrode sheet misalignment control device, comprising the apparatus includes a sensor, a camera and a controller, and the controller is connected to the sensor and the camera respectively the sensor is used to detect the position information of the notch hole of the anode sheet and the tab position information of the cathode sheet the camera is used to capture a cut image corresponding to the anode sheet the controller includes at least one processor and a memory communicatively connected to the at least one processor instructions executable by the at least one processor are stored in the memory, and when the instructions are executed by the at least one processor, the at least one processor executes the electrode sheet misalignment control method according to any one of claims 1 to 7 based on the position information of the notch hole, the tab position information and the cut image An electrode sheet misalignment control device, characterized in that

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