Separator detection method, device and equipment

Abstract

The present application provides a method, apparatus and device for detecting a separator. [Solution] The method includes acquiring a target image of an electrode sheet to be detected, the electrode sheet to be detected including an anode sheet and separators stacked on both side sides of the anode sheet, performing image processing on the target image to determine a target image area in the target image, and performing misalignment detection on the separators in the electrode sheet to be detected based on the target image area.

Description

[Technical Field]

[0001] The present invention relates to the technical field of batteries, and in particular to a separator detection method, device and instrument. [Background technology]

[0002] With the rapid development of battery technology, the application of batteries (e.g., lithium batteries) is becoming increasingly widespread. The electrode sheet is one of the basic assemblies of a battery, and its manufacturing quality has a significant impact on the battery's performance, such as battery energy density, capacity, and service life. In the process of stacking electrode sheets, separators are usually stacked on both sides of the anode sheet to achieve insulation between the anode and cathode sheets.

[0003] Here, the separators superimposed on both sides of the anode sheet are prone to misalignment, which may result in a decrease in battery performance. To ensure the quality of the battery, it is necessary to detect any misalignment of the separators superimposed on both sides of the anode sheet and remove any electrode sheets that do not meet the requirements due to misalignment after superimposition and are waiting for detection. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the above problems, the present application provides a separator detection method, device and instrument. [Means for solving the problem]

[0005] According to a first aspect, the present application provides a separator detection method including: acquiring a target image of an electrode sheet to be detected, the electrode sheet to be detected including an anode sheet and separators stacked on both side surfaces of the anode sheet; performing image processing on the target image to determine a target image area in the target image; and detecting misalignment of the separators in the electrode sheet to be detected based on the target image area. [Effects of the Invention]

[0006] In the embodiment of the present application, a target image of the electrode sheet to be detected is acquired, image processing is performed on the target image, a target image area corresponding to the separator in the target image is determined, and positional deviation detection is performed on the separator in the electrode sheet to be detected based on the target image area. In this way, it is possible to detect whether the separator in the electrode sheet to be detected is misaligned using the image area corresponding to the separator in the image of the electrode sheet to be detected, which not only improves the detection accuracy but also improves the detection efficiency compared to determining separator positional deviation based on human experience.

[0007] In some embodiments, performing positional deviation detection on the separator in the electrode sheet to be detected based on the target image area includes: Obtaining a number of separator image sub-regions in the target image region; Determining a separator misalignment result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area, and the separator misalignment result is used to indicate whether the separator of the electrode sheet to be detected has been misaligned.

[0008] In this embodiment, the number of separator image sub-areas in the target image area is obtained, and the separator misalignment result is determined based on the number of separator image sub-areas in the target image area, thereby making the detection process simpler, saving computational resources, and improving the detection speed in the process of detecting whether the separator of the electrode sheet to be detected is misaligned.

[0009] In some embodiments, obtaining the number of separator image sub-regions in the target image region comprises: performing a grayscale image segmentation process on the target image region to obtain N separator image sub-regions with different grayscales, where N is a positive integer; where N is the number of separator image sub-regions in the target image.

[0010] In this embodiment, a gradation image segmentation process is performed on the target image area, and the number of separator image sub-areas is determined based on the different gradations in the target image area, making the processing process of determining the number of separator image sub-areas in the target image simpler and more accurate.

[0011] In some embodiments, determining the separator misregistration result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area includes: determining that the separator misalignment result of the electrode sheet to be detected is a first sub-result for indicating that the separator of the electrode sheet to be detected is not misaligned when the number of separator image sub-regions in the target image is a first predetermined number; If the number of separator image sub-areas in the target image is a second predetermined number, the separator misalignment result of the electrode sheet waiting to be detected is determined to be a second sub-result for indicating that the separator of the electrode sheet waiting to be detected has been misaligned, wherein the second predetermined number is different from the first predetermined number.

[0012] In this embodiment, by comparing the number of separator image sub-areas in the target image with a first predetermined number and a second predetermined number, respectively, a first sub-result and a second sub-result can be obtained, respectively, to indicate whether the separator of the electrode sheet waiting for detection is misaligned, thereby making it easier and faster to determine whether the separator of the electrode sheet waiting for detection is misaligned.

[0013] In some embodiments, the method further includes outputting fault indication information when the number of separator image sub-regions in the target image is a third predetermined number, the third predetermined number being different from the first predetermined number and the second predetermined number.

[0014] In this embodiment, when the number of separator image sub-areas in the target image is a third predetermined number, the overlay device outputs fault notification information to prompt timely rectification of the fault and reduce the defective rate of the battery electrode sheet.

[0015] In some embodiments, after detecting a positional deviation of the separator in the electrode sheet to be detected based on the target image area, When it is detected that the separator of the electrode sheet before detection has shifted in position, the method includes determining the amount of shift in position of the separator of the electrode sheet before detection based on the target image area.

[0016] In this embodiment, when it is detected that the separator of the electrode sheet to be detected is misaligned, the overlay device determines the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area, and the amount of misalignment can intuitively reflect the degree of misalignment of the separator of the electrode sheet to be detected, and provide a reference for subsequent production.

[0017] In some embodiments, when it is detected that the separator of the electrode sheet to be detected has been misaligned, determining the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area includes: When it is detected that the separator of the electrode sheet to be detected has shifted in position, determining a single-layer separator region and a two-layer separator region in the separator image sub-region of the target image; performing edge detection on each of the single-layer separator region and the dual-layer separator region to obtain a first region edge of the single-layer separator region and a second region edge of the dual-layer separator region, the second region edge corresponding to the first region edge; and determining that the distance between the first area edge and the second area edge is the amount of misalignment of the separator in the electrode sheet to be detected.

[0018] In this embodiment, when the separator of the electrode sheet awaiting detection is misaligned, the corresponding first area edge and second area edge in the single-layer separator area and the two-layer separator area of ​​the target image are obtained, and the distance between the first area edge and the second area edge is determined as the misalignment amount of the electrode sheet awaiting detection, thereby making the determined misalignment amount of the separator more accurate.

[0019] In some embodiments, the method further includes obtaining a third region edge, which is an edge of an image region in the target image corresponding to the anode sheet or the cathode sheet, the third region edge corresponding to the second region edge, and determining a distance between the third region edge and the second region edge.

[0020] In this embodiment, the overlay device further obtains a third area edge of the image area corresponding to the anode sheet or the cathode sheet, and determines the distance between the third area edge and the second area edge, thereby determining the distance between the edge of the two-layer separator and the edge of the anode sheet or the cathode sheet in the target image, and can control the production of battery electrode sheets based on this distance.

[0021] According to a second aspect, the present application further provides a separator detection device comprising: an image acquisition module that acquires a target image of an electrode sheet to be detected, the electrode sheet to be detected including an anode sheet and separators stacked on both side surfaces of the anode sheet; an image area determination module that performs image processing on the target image and determines a target image area in the target image, the target image area including an image area corresponding to the separator; and a positional deviation detection module that detects positional deviation of the separator in the electrode sheet to be detected based on the target image area.

[0022] In the embodiment of the present application, a target image of the electrode sheet to be detected is acquired, image processing is performed on the target image, a target image area corresponding to the separator in the target image is determined, and positional deviation detection is performed on the separator in the electrode sheet to be detected based on the target image area. In this way, it is possible to detect whether the separator in the electrode sheet to be detected is misaligned using the image area corresponding to the separator in the image of the electrode sheet to be detected, which not only improves the detection accuracy but also improves the detection efficiency compared to determining separator positional deviation based on human experience.

[0023] In some embodiments, the misalignment detection module includes an area number acquisition unit that acquires the number of separator image sub-areas in the target image area, and a misalignment result determination unit that determines a separator misalignment result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area, the separator misalignment result being used to indicate whether the separator of the electrode sheet to be detected has been misaligned.

[0024] In this embodiment, the number of separator image sub-areas in the target image area is obtained, and the separator misalignment result is determined based on the number of separator image sub-areas in the target image area, thereby making the detection process simpler, saving computational resources, and improving the detection speed in the process of detecting whether the separator of the electrode sheet to be detected is misaligned.

[0025] In some embodiments, the region number acquisition unit is specifically used to perform a grayscale image segmentation process on the target image region to obtain N separator image sub-regions with different grayscales, where N is a positive integer, and N is the number of separator image sub-regions in the target image.

[0026] In this embodiment, a gradation image segmentation process is performed on the target image area, and the number of separator image sub-areas is determined based on the different gradations in the target image area, making the processing process of determining the number of separator image sub-areas in the target image simpler and more accurate.

[0027] In some embodiments, the misalignment result determination unit comprises a first sub-result determination subunit that determines that the separator misalignment result of the electrode sheet waiting to be detected is a first sub-result when the number of separator image sub-areas in the target image is a first predetermined number, and the first sub-result is used to indicate that the separators of the electrode sheet waiting to be detected are not misaligned, and a second sub-result determination subunit that determines that the separator misalignment result of the electrode sheet waiting to be detected is a second sub-result when the number of separator image sub-areas in the target image is a second predetermined number, and the second predetermined number is different from the first predetermined number, and the second sub-result is used to indicate that the separators of the electrode sheet waiting to be detected are misaligned.

[0028] In this embodiment, by comparing the number of separator image sub-areas in the target image with a first predetermined number and a second predetermined number, a first sub-result and a second sub-result can be obtained, respectively, to indicate whether the separator of the electrode sheet waiting for detection is misaligned, thereby making it easier and faster to determine whether the separator of the electrode sheet waiting for detection is misaligned.

[0029] In some embodiments, the method further includes a presentation information output module for outputting fault presentation information when the number of separator image sub-regions in the target image is a third predetermined number different from the first predetermined number and the second predetermined number.

[0030] In this embodiment, when the number of separator image sub-areas in the target image is a third predetermined number, the overlay device outputs fault notification information to prompt timely rectification of the fault and reduce the defective rate of the battery electrode sheet.

[0031] In some embodiments, the device further includes a misalignment amount determination module that, when it detects that the separator of the electrode sheet to be detected has been misaligned, determines the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area.

[0032] In this embodiment, when it is detected that the separator of the electrode sheet to be detected is misaligned, the overlay device can determine the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area, so that the amount of misalignment can intuitively reflect the degree of separator misalignment of the electrode sheet to be detected and provide a reference for subsequent production.

[0033] In some embodiments, the misalignment amount determination module includes a separator area determination unit that, when it detects that the separator of the electrode sheet waiting to be detected has been misaligned, determines a single-layer separator area and a two-layer separator area in a separator image sub-area of ​​the target image; an edge detection unit that performs edge detection on the single-layer separator area and the two-layer separator area, respectively, to obtain a first area edge of the single-layer separator area and a second area edge of the two-layer separator area, the second area edge corresponding to the first area edge; and a misalignment amount determination unit that determines that the distance between the first area edge and the second area edge is the misalignment amount of the separator in the electrode sheet waiting to be detected.

[0034] In this embodiment, when the separator of the electrode sheet waiting for detection is misaligned, the corresponding first area edge and second area edge in the single-layer separator area and two-layer separator area of ​​the target image are obtained, and the distance between the first area edge and the second area edge is determined as the misalignment amount of the electrode sheet waiting for detection, thereby making the determined misalignment amount of the separator more accurate.

[0035] In some embodiments, the method further includes an edge acquisition module that acquires a third region edge, which is an edge of an image region in the target image corresponding to the anode sheet or the cathode sheet, and the third region edge corresponds to the second region edge; and a spacing determination module that determines a spacing between the third region edge and the second region edge.

[0036] In this embodiment, the overlay device further obtains a third area edge of the image area corresponding to the anode sheet or the cathode sheet, and determines the distance between the third area edge and the second area edge, thereby determining the distance between the edge of the two-layer separator and the edge of the anode sheet or the cathode sheet in the target image, and can control the production of battery electrode sheets based on this distance.

[0037] According to a third aspect, the present application further provides a superposition device including a processor, a memory, and a program or instructions stored in the memory and executable by the processor, the program or instructions implementing the steps of the separator detection method described in the first aspect when executed by the processor.

[0038] According to a fourth aspect, the present application further provides a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implements the steps of the separator detection method described in the first aspect.

[0039] The above description is only a summary of the technical solution of the present application, which may be implemented according to the contents of the specification in order to more clearly understand the technical means of the present application; and in order to more clearly understand the above and other objectives, features and advantages of the present application, specific embodiments of the present application are described in detail below. [Brief explanation of the drawings]

[0040] Various other benefits and advantages will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments. The drawings are merely illustrative of the preferred embodiments and are not to be construed as limiting the present application. In the drawings, like elements are designated by like reference numerals. [Figure 1] 1 is a structural schematic diagram of a superposition device according to the present application; [Figure 2] 1 is a flowchart of an embodiment of a separator detection method according to the present application. [Figure 3] 1 is a structural schematic diagram of an imaging device in an embodiment of a separator detection method according to the present application. [Figure 4] 1 is a schematic diagram of a target image in an embodiment of a separator detection method according to the present application; FIG. [Figure 5] 1 is a structural schematic diagram of an embodiment of a separator detection device according to the present application; [Figure 6] 1 is a schematic diagram of the hardware structure of an embodiment of the superposition device according to the present application; DETAILED DESCRIPTION OF THE INVENTION

[0041] Hereinafter, the embodiments of the technical solution of the present application will be described in detail with reference to the drawings. The following embodiments are merely for the purpose of more clearly illustrating the technical solution of the present application, and therefore are merely examples and do not limit the scope of protection of the present application.

[0042] Unless otherwise defined, all technical terms and terms used herein have the same meaning as commonly understood by those skilled in the art of this application. The terms used herein are merely for the purpose of describing specific embodiments and are not intended to limit the present application. The terms "comprise," "have," and any variations thereof in the specification, claims, and description of the drawings of this application are intended to cover a non-exclusive inclusion.

[0043] In the description of the embodiments of the present application, technical terms such as "first" and "second" are used only to distinguish different objects, and cannot be understood as indicating or implying relative importance, or as implying the number, decision order, or hierarchical relationship of the indicated technical features. In the description of the embodiments of the present application, "plurality" means two or more, unless otherwise specified.

[0044] The term "embodiment" as used herein means that a feature, structure, or characteristic of a feature described with reference to the embodiment may be included in at least one embodiment of the present application. The appearance of the term in each location in the specification does not necessarily refer to the same embodiment, nor is it an independent or potential embodiment that is mutually exclusive with other embodiments. As those skilled in the art will understand, both explicitly and implicitly, the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments of the present application, the term "and / or" simply describes the relationship between related objects and can indicate the existence of three types of relationships. For example, A and / or B can indicate three situations: A only exists, A and B both exist, and B only exists. In addition, in this specification, the symbol " / " generally indicates that the related objects before and after it are in an "or" relationship.

[0046] In describing the embodiments of the present application, the term "plurality" refers to two or more (including two); similarly, "multiple sets" refers to two or more (including two sets), and "plurality" refers to two or more (including two).

[0047] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are orientations or positional relationships shown in the drawings, and are intended to facilitate and simplify the description of the embodiments of the present application. They do not indicate or imply that the devices or elements shown have a specific orientation or must be constructed or operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0048] In describing the embodiments of the present application, unless otherwise clearly specified or limited, the terms "attached," "connected," "coupled," and "fixed" should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, or an integral connection, and may also refer to a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, an internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art will be able to understand the specific meanings of the above terms in the embodiments of the present application according to specific circumstances.

[0049] The manufacturing process of a battery electrode sheet is usually achieved by a laminating device. As shown in FIG. 1 , the laminating device first transfers an anode sheet 10, a first separator (also referred to as an "upper separator") 20, and a second separator (also referred to as a "lower separator") 30 to position A, where the anode sheet 10, the first separator 20, and the second separator 30 are laminated together to form a laminated sheet. The laminating device then transfers the laminated sheet, a first cathode sheet (also referred to as an "upper cathode sheet") 40, and a second cathode sheet (also referred to as a "lower cathode sheet") 50 to position B, where the first cathode sheet 40, the second cathode sheet 50, and the laminated sheet are laminated together to form a battery electrode sheet.

[0050] Currently, in the process of stacking the battery electrode sheets using the stacking equipment, the first separator 20 and the second separator 30 stacked on both sides of the anode sheet 10 are prone to misalignment, which can result in reduced battery performance. Therefore, to ensure battery quality, it is necessary to detect misalignment of the first separator 20 and the second separator 30 and remove any battery electrode sheets that do not meet requirements due to misalignment after stacking. However, currently, the detection of misalignment of the first separator 20 and the second separator 30 is typically determined based on human experience, which is prone to error and results in low detection accuracy.

[0051] Currently, there is a problem in that the detection accuracy is low in detecting the misalignment of the first separator 20 and the second separator 30, and the present application provides a separator detection method, device and apparatus.

[0052] 2 is a flowchart of an embodiment of a separator detection method according to the present application, which is applied to the above-mentioned stacking device. As shown in FIG. 2, the separator detection method includes the following steps 201 to 203. In step 201, a target image of an electrode sheet to be detected is obtained, where the electrode sheet to be detected includes an anode sheet and separators stacked on both sides of the anode sheet. In step 202, image processing is performed on the target image to determine a target image region in the target image. In step 203, misalignment detection is performed on the separator in the electrode sheet to be detected based on the target image area.

[0053] In the embodiment of the present application, a target image of the electrode sheet to be detected is acquired, image processing is performed on the target image, a target image area corresponding to the separator in the target image is determined, and positional deviation detection is performed on the separator in the electrode sheet to be detected based on the target image area. In this way, it is possible to detect whether the separator in the electrode sheet to be detected is misaligned using the image area corresponding to the separator in the image of the electrode sheet to be detected, which not only improves the detection accuracy but also improves the detection efficiency compared to determining separator positional deviation based on human experience.

[0054] In the above step 201, in the production process of the electrode sheet to be detected, the overlapping device can acquire the target image of the produced electrode sheet to be detected.

[0055] The electrode sheet to be detected includes an anode sheet and separators stacked on both sides of the anode sheet. For example, the electrode sheet to be detected may be a stacked sheet formed by stacking the anode sheet 10, the first separator 20, and the second separator 30 at position A, or may be a battery electrode sheet formed by stacking the stacked sheet, the first cathode sheet 40, and the second cathode sheet 50 at position B.

[0056] Acquiring the target image of the electrode sheet waiting to be detected may involve installing a photographing device in the overlaying device and photographing an image of the electrode sheet waiting to be detected in real time as the target image by the photographing device.

[0057] Installing an imaging device in the above-mentioned superposition device may mean installing the imaging device at any position where it can capture the target image, and the imaging device can be located at any transmission position after the position of the electrode sheet waiting for detection is formed by superposing it.

[0058] For example, by installing the photographing device at any transmission position between position A and position B in the superimposing device, the superimposed image can be photographed as the target image, or by installing the photographing device at any transmission position after position B in the superimposing device, an image of the battery electrode sheet can be photographed as the target image. Specifically, the photographing device may be installed at position C as shown in FIG. 1.

[0059] The term "a photographing device is installed on the superposition device" means that the photographing angle of the photographing device is at any angle that allows the target image to be photographed. For example, as shown in Fig. 3, the photographing device 31 may be installed on either side of the electrode sheet before detection, and the photographing direction of the photographing device 31 may be perpendicular to the transmission direction X of the electrode sheet before detection, or the photographing direction of the photographing device 31 and the electrode sheet before detection may be installed at a predetermined included angle, and the predetermined focal length may be 30° to 90°.

[0060] After acquiring the target image in step 202, the registration device can perform image processing on the target image to determine a target image region (also called an "image region of interest") in the target image.

[0061] The target image area may be an image area corresponding to a separator bonded to both sides of the anode sheet. Specifically, the target image area may include a separator image sub-area of ​​the anode sheet and one side of the separator (also referred to as a "single-layer separator area"), or may include separator image sub-areas of the anode sheet and both side separators (also referred to as a "two-layer separator area").

[0062] For example, if the electrode sheet waiting for detection is a battery electrode sheet, the image of the battery electrode sheet (i.e., the target image) includes a two-layer separator region 41 and a single-layer separator region 42, as shown in Figure 4, and the two-layer separator region 41 includes an image sub-region in which the anode sheet 10, the first separator 20, and the second separator 30 are superimposed, and the separator image region 42 includes an image sub-region in which the anode sheet 10 and the first separator 20 or the second separator 30 are superimposed.

[0063] Performing image processing on the target image and determining the target image area in the target image may mean performing gradation on the target image using a preset image processing algorithm, dividing the gradated image into image areas according to the gradation of each image area in the image, and obtaining the target image area.

[0064] Gradient-grading the target image may mean gradating all image areas of the target image, or may mean first positioning a separator image area, which is an image area that includes at least one layer of separator, then gradating the separator image area, and finally dividing the gradated separator image area.

[0065] In step 203, after determining the target image area in the target image, the overlay device can perform misregistration detection for the separator in the electrode sheet to be detected based on the target image area.

[0066] Detecting misalignment of the separator in the electrode sheet awaiting detection based on the target image area means first recognizing whether or not a single-layer separator area exists in the target image area using a preset image recognition algorithm, and if it is recognized that a single-layer separator area exists, determining the misalignment of the separator in the electrode sheet awaiting detection, and if it is recognized that a single-layer separator area does not exist, determining that the separator in the electrode sheet awaiting detection is not misaligned.

[0067] For example, after the overlay device determines an image region of interest of the electrode sheet to be detected, the overlay device can divide the image region of interest based on the gradation in the image to obtain at least one image sub-region. The overlay device can determine whether or not a single-layer separator region exists in the at least one image sub-region based on the gradation value of each image sub-region, where the gradation value is close to or equal to a predetermined gradation value, and the predetermined gradation value is used to indicate that the image sub-region is an image region of a single-layer separator. If a single-layer separator region exists with a gradation value close to or equal to the predetermined gradation value, the overlay device can determine that the separator of the electrode sheet to be detected is misaligned. If no single-layer separator region exists with a gradation value close to or equal to the predetermined gradation value, the overlay device can determine that the separator of the electrode sheet to be detected is not misaligned.

[0068] In some embodiments, performing positional deviation detection on the separator in the electrode sheet to be detected based on the target image area includes: Obtaining a number of separator image sub-regions in the target image region; Determining a separator misalignment result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area, and the separator misalignment result is used to indicate whether the separator of the electrode sheet to be detected has been misaligned.

[0069] In this embodiment, the number of separator image sub-areas in the target image area is obtained, and the separator misalignment result is determined based on the number of separator image sub-areas in the target image area, thereby making the detection process simpler, saving computational resources, and improving the detection speed in the process of detecting whether the separator of the electrode sheet to be detected is misaligned.

[0070] Obtaining the number of separator image sub-areas in the target image area may involve using an image processing algorithm to detect the contours of different image sub-areas in the target image area and determining the number of image sub-areas having different contours as the number of separator image sub-areas in the target image area.

[0071] In some embodiments, obtaining the number of separator image sub-regions in the target image region includes performing a grayscale image segmentation process on the target image region to obtain N separator image sub-regions having different grayscales, where N is a positive integer.

[0072] Here, N may be the number of separator image sub-regions in the target image.

[0073] In this embodiment, a gradation image segmentation process is performed on the target image area, and the number of separator image sub-areas is determined based on the different gradations in the target image area, making the processing process of determining the number of separator image sub-areas in the target image simpler and more accurate.

[0074] In some embodiments, determining the separator misregistration result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area includes: determining that the separator misalignment result of the electrode sheet to be detected is a first sub-result for indicating that the separator of the electrode sheet to be detected is not misaligned when the number of separator image sub-regions in the target image is a first predetermined number; If the number of separator image sub-areas in the target image is a second predetermined number, the separator misalignment result of the electrode sheet waiting to be detected is determined to be a second sub-result for indicating that the separator of the electrode sheet waiting to be detected has been misaligned, wherein the second predetermined number is different from the first predetermined number.

[0075] In this embodiment, by comparing the number of separator image sub-areas in the target image with a first predetermined number and a second predetermined number, respectively, a first sub-result and a second sub-result can be obtained, respectively, to indicate whether the separator of the electrode sheet awaiting detection is misaligned, thereby making it easier and faster to determine whether the separator of the electrode sheet awaiting detection is misaligned.

[0076] The first predetermined number and the second predetermined number may be different numbers that are set in advance, and when the number of separator image sub-areas is the first predetermined number, the separators of the electrode sheet to be detected are not misaligned, i.e., the separators superimposed on both sides of the anode sheet in the electrode sheet to be detected are aligned with the anode sheet, and when the number of separator image sub-areas is the second predetermined number, the separators of the electrode sheet to be detected are misaligned, i.e., the separators superimposed on both sides of the anode sheet in the electrode sheet to be detected are not aligned with the anode sheet.

[0077] For example, when the first separator 20 and the second separator 30 are aligned with the anode sheet 10, and the image captured by the image capture device 31 shown in Fig. 3 includes only the two-layer separator region 41 shown in Fig. 4 in the image region corresponding to the separators, the first predetermined number can be set to 1. In this case, if the overlay device determines that the number of separator image sub-regions in the target image is 1, it is determined that the separators of the electrode sheet to be detected are not misaligned. When the first separator 20 and the second separator 30 are aligned with the anode sheet 10, and the image captured by the image capture device includes the two-layer separator region 41 and the single-layer separator region 42 in the image region corresponding to the separators, the first predetermined number can be set to 2. In this case, if the overlay device determines that the number of separator image sub-regions in the target image is 2, it is determined that the separators of the electrode sheet to be detected are misaligned.

[0078] In addition, in the manufacturing process of the battery electrode sheet, there is a possibility that the electrode sheet waiting for detection does not have a separator, so for example, the separator roll for transporting the first separator 10 and the second separator 20 to position A will be worn out and will not be replaced in a timely manner.

[0079] In some embodiments, the method further includes outputting fault indication information when the number of separator image sub-regions in the target image is a third predetermined number, the third predetermined number being different from the first predetermined number and the second predetermined number.

[0080] In this embodiment, when the number of separator image sub-areas in the target image is a third predetermined number, the overlay device outputs fault notification information to prompt timely rectification of the fault and reduce the defective rate of the battery electrode sheet.

[0081] The output of the fault notification information may be realized by at least one of the following methods: a warning light, display information, and audio announcement.

[0082] The third predetermined number is different from the first predetermined number and the second predetermined number, and if the number of separator image sub-areas is the third predetermined number, the overlay device can determine that no separators are present in the electrode sheet awaiting detection.

[0083] For example, if there is no separator in the electrode sheet waiting for detection, there is no separator image sub-area corresponding to the separator in the target image, i.e., the third predetermined number is 0, so if the number of separator image sub-areas in the target image is 0, the overlay device can display an "NG" mark on its display interface to prompt the operator to stop the device.

[0084] In some embodiments, after detecting misalignment of the separator in the electrode sheet waiting to be detected based on the target image area, if it is detected that the separator in the electrode sheet waiting to be detected has been misaligned, the method further includes determining the amount of misalignment of the separator in the electrode sheet waiting to be detected based on the target image area.

[0085] In this embodiment, when it is detected that the separator of the electrode sheet to be detected is misaligned, the overlay device determines the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area, and the amount of misalignment can intuitively reflect the degree of misalignment of the separator of the electrode sheet to be detected, and provide a reference for subsequent production.

[0086] When it is detected that the separator of the electrode sheet awaiting detection has been misaligned, determining the amount of misalignment of the separator in the electrode sheet awaiting detection based on the target image area may also be determining the amount of misalignment of the separator in the electrode sheet awaiting detection based on the target image area when determining that the separator of the electrode sheet awaiting detection has been misaligned based on the number of separator image sub-areas in the target image area.

[0087] Determining the amount of misalignment of the separator in the electrode sheet to be detected based on the separator image sub-area in the target image involves the overlay device acquiring a single-layer separator area including the anode sheet and a separator on one side, then determining the number of pixel points in the width direction of the single-layer separator area, and determining the amount of misalignment of the separator in the electrode sheet to be detected based on the number of pixel points.

[0088] The amount of misalignment of the separator may be a width value in the width direction perpendicular to the conveying direction of the electrode sheet waiting for detection, and the amount of misalignment is used to reflect the dimension at which misalignment occurs in the separators on both side surfaces of the electrode sheet waiting for detection.

[0089] In some embodiments, when it is detected that the separator of the electrode sheet to be detected has been misaligned, determining the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area includes: When it is detected that the separator of the electrode sheet to be detected has shifted in position, determining a single-layer separator region and a two-layer separator region in the separator image sub-region of the target image; performing edge detection on each of the single-layer separator region and the dual-layer separator region to obtain a first region edge of the single-layer separator region and a second region edge of the dual-layer separator region, the second region edge corresponding to the first region edge; and determining that the distance between the first area edge and the second area edge is the amount of misalignment of the separator in the electrode sheet to be detected.

[0090] In this embodiment, when the separator of the electrode sheet awaiting detection is misaligned, the corresponding first area edge and second area edge in the single-layer separator area and the two-layer separator area of ​​the target image are obtained, and the distance between the first area edge and the second area edge is determined as the misalignment amount of the electrode sheet awaiting detection, thereby making the determined misalignment amount of the separator more accurate.

[0091] The determination of the single-layer separator region and the double-layer separator region in the separator image sub-region of the target image can be performed by performing gradation processing on the target image region and then determining the single-layer separator region and the double-layer separator region based on the gradation of each separator image sub-region in the target image region. Because single-layer separators have higher light transmittance than double-layer separators, the gradation of the single-layer separator region is usually lower than the gradation of the double-layer separator region.

[0092] The second region edge corresponding to the first region edge may be two region edges each connected to the single-layer separator region in the width direction.

[0093] For example, as shown in FIG. 4, after the overlapping device determines the two-layer separator region 41 and the single-layer separator region 42, the overlapping device can detect the edge 411 (i.e., the second edge region) of the two-layer separator region 41 and the edge 421 (i.e., the first edge region) of the single-layer separator region 42, and determine the distance between the edge 411 and the edge 421 as the amount of separator misalignment.

[0094] In some embodiments, the method further comprises: Obtaining a third region edge, which is an edge of an image region in the target image corresponding to the anode sheet or the cathode sheet, the third region edge corresponding to the second region edge; and determining a distance between the third region edge and the second region edge.

[0095] In this embodiment, the overlay device obtains the third area edge of the image area corresponding to the anode sheet or the cathode sheet, and determines the distance between the third area edge and the second area edge, thereby determining the distance between the edge of the two-layer separator and the edge of the anode sheet or the cathode sheet in the target image, and can control the production of the battery electrode sheet based on this distance.

[0096] Obtaining the third region edge may be performed when the overlay device determines that there is a misalignment in the electrode sheet to be detected, or may be performed when the overlay device determines that there is no misalignment in the electrode sheet to be detected, but is not limited thereto.

[0097] For example, as shown in FIG. 4, if the target image includes a two-layer separator region 41 and a single-layer separator region 42, the overlay device obtains an edge 431 (i.e., the third region edge) of the image region 43 corresponding to the anode sheet, determines the distance between the edge 431 and the edge 421, and finally uploads the distance between the edge 431 and the edge 421 and the distance between the edge 421 and the edge 411 to the processor of the overlay device, so that the production of the battery electrode sheet can be controlled based on the obtained two distances.

[0098] Fig. 5 is a structural schematic diagram of an embodiment of a separator detection device according to the present application. As shown in Fig. 5, the separator detection device 500 includes an image acquisition module 501 that acquires a target image of a pre-detection electrode sheet, the pre-detection electrode sheet including an anode sheet and separators stacked on both side surfaces of the anode sheet, an image area determination module 502 that performs image processing on the target image to determine a target image area in the target image, the target image area including an image area corresponding to the separator, and a positional deviation detection module 503 that detects a positional deviation of the separator in the pre-detection electrode sheet based on the target image area.

[0099] In the embodiment of the present application, a target image of the electrode sheet to be detected is acquired, image processing is performed on the target image, a target image area corresponding to the separator in the target image is determined, and positional deviation detection is performed on the separator in the electrode sheet to be detected based on the target image area. In this way, it is possible to detect whether the separator in the electrode sheet to be detected is misaligned using the image area corresponding to the separator in the image of the electrode sheet to be detected, which not only improves the detection accuracy but also improves the detection efficiency compared to determining separator positional deviation based on human experience.

[0100] In some embodiments, the misalignment detection module 503: a region number acquisition module for acquiring the number of separator image sub-regions in the target image region; The device includes a misalignment result determination module that determines a separator misalignment result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area, and the separator misalignment result is used to indicate whether the separator of the electrode sheet to be detected has been misaligned.

[0101] In this embodiment, the number of separator image sub-areas in the target image area is obtained, and the separator misalignment result is determined based on the number of separator image sub-areas in the target image area, thereby making the detection process simpler, saving computational resources, and improving the detection speed in the process of detecting whether the separator of the electrode sheet to be detected is misaligned.

[0102] In some embodiments, the region number acquisition unit specifically: A grayscale image segmentation process is performed on the target image region to obtain N separator image sub-regions with different grayscale levels, where N is a positive integer. Here, N is the number of separator image sub-regions in the target image.

[0103] In this embodiment, a gradation image segmentation process is performed on the target image area, and the number of separator image sub-areas is determined based on the different gradations in the target image area, making the processing process of determining the number of separator image sub-areas in the target image simpler and more accurate.

[0104] In some embodiments, the misregistration result determination unit comprises: a first sub-result determination subunit for determining that the separator misalignment result of the electrode sheet to be detected is a first sub-result when the number of separator image sub-regions in the target image is a first predetermined number, and the first sub-result is used to indicate that the separator of the electrode sheet to be detected is not misaligned; and a second sub-result determination subunit that determines that the separator misalignment result of the electrode sheet waiting to be detected is a second sub-result if the number of separator image sub-areas in the target image is a second predetermined number, the second predetermined number being different from the first predetermined number, and the second sub-result being used to indicate that the separator of the electrode sheet waiting to be detected has been misaligned.

[0105] In this embodiment, by comparing the number of separator image sub-areas in the target image with a first predetermined number and a second predetermined number, respectively, a first sub-result and a second sub-result can be obtained, respectively, to indicate whether the separator of the electrode sheet waiting for detection is misaligned, thereby making it easier and faster to determine whether the separator of the electrode sheet waiting for detection is misaligned.

[0106] In some embodiments, the method further includes a presentation information output module that outputs fault presentation information when the number of separator image sub-regions in the target image is a third predetermined number, the third predetermined number being different from the first predetermined number and the second predetermined number.

[0107] In this embodiment, when the number of separator image sub-areas in the target image is a third predetermined number, the overlay device outputs fault notification information to prompt timely rectification of the fault and reduce the defective rate of the battery electrode sheet.

[0108] In some embodiments, the device further includes a misalignment amount determination module that, when it detects that the separator of the electrode sheet to be detected has been misaligned, determines the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area.

[0109] In this embodiment, when it is detected that the separator of the electrode sheet to be detected is misaligned, the overlay device can determine the amount of misalignment of the separator in the electrode sheet to be detected based on the target image area, so that the amount of misalignment can intuitively reflect the degree of separator misalignment of the electrode sheet to be detected and provide a reference for subsequent production.

[0110] In some embodiments, the misregistration amount determination module: a separator region determination unit that, when detecting that the separator of the electrode sheet to be detected has shifted in position, determines a single-layer separator region and a two-layer separator region in the separator image sub-region of the target image; an edge detection unit for performing edge detection on the single-layer separator region and the double-layer separator region, respectively, to obtain a first region edge of the single-layer separator region and a second region edge of the double-layer separator region, the second region edge corresponding to the first region edge; The electrode sheet includes a positional deviation amount determining unit that determines that the distance between the first area edge and the second area edge is the positional deviation amount of the separator in the electrode sheet to be detected.

[0111] In this embodiment, when the separator of the electrode sheet waiting for detection is misaligned, the corresponding first area edge and second area edge in the single-layer separator area and two-layer separator area of ​​the target image are obtained, and the distance between the first area edge and the second area edge is determined as the misalignment amount of the electrode sheet waiting for detection, thereby making the determined misalignment amount of the separator more accurate.

[0112] In some embodiments, an edge acquisition module acquires a third region edge, which is an edge of an image region in the target image corresponding to the anode sheet or the cathode sheet, and the third region edge corresponds to the second region edge; and a spacing determination module that determines a spacing between the third region edge and the second region edge.

[0113] In this embodiment, the overlay device obtains the third area edge of the image area corresponding to the anode sheet or the cathode sheet, and determines the distance between the third area edge and the second area edge, thereby determining the distance between the edge of the two-layer separator and the edge of the anode sheet or the cathode sheet in the target image, and can control the production of battery electrode sheets based on this distance.

[0114] Other details of the separator detection device according to the embodiment of the present application are similar to those of the separator detection method described with reference to the embodiment shown in FIG. 2 and can achieve corresponding technical effects, but for the sake of brevity, the description thereof will be omitted here.

[0115] FIG. 6 is a schematic diagram of the hardware structure of an embodiment of the overlay device according to the present application. The registration device may include a processor 601 and a memory 602 that stores computer program instructions.

[0116] In particular, the processor 601 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement embodiments of the present application.

[0117] Memory 602 may include mass memory used for data and instructions. For example, memory 602 may include, but is not limited to, a hard disk drive (HDD), a floppy disk drive, flash memory, an optical disk, a magneto-optical disk, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more thereof. In some embodiments, memory 602 includes removable or non-removable (or fixed) media, or memory 602 is non-volatile solid-state memory. In some embodiments, memory 602 may be located internal or external to the battery device.

[0118] In some embodiments, memory 602 may be read only memory (ROM). In one embodiment, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically alterable programmable ROM (EAROM), or flash memory, or a combination of two or more thereof.

[0119] The memory 602 may include read-only memory (ROM), random access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical / tangible memory storage devices. Thus, generally, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software that includes computer-executable instructions, and which, when executed (e.g., by one or more processors), can operate to perform the operations described in a method according to an aspect of the present disclosure.

[0120] The processor 601 reads and executes the computer program instructions stored in the memory 602 to realize the method in the embodiment shown in FIG. 2 and achieve the technical effects obtained by the embodiment shown in FIG. 2 by performing the method / steps, which will not be described here for the sake of brevity.

[0121] In one example, the overlay device may further include a communication interface 603 and a bus 604. Here, as shown in Figure 6, the processor 601, the memory 602, and the communication interface 603 are connected by the bus 604 and complete communication between them.

[0122] The communication interface 603 is mainly used to realize communication between the modules, apparatuses, units and / or devices in the embodiment of the present application.

[0123] The bus 604 may include hardware, software, or both, and may couple the components of the online data traffic charging device to one another. For example, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin-in Count (LPC) bus, a memory bus, a MicroChannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Accessory (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or any other suitable bus, or a combination of two or more thereof. Under appropriate circumstances, the bus 604 may include one or more buses. While embodiments herein are illustrated and described with particular buses, the present application contemplates any suitable bus or interconnect.

[0124] The overlaying device can realize the separator detection method and device described with reference to FIG. 2 by executing the separator detection method according to the embodiment of the present application.

[0125] Furthermore, in reference to the separator detection method and device in the above embodiments, the present invention may be realized by providing a computer storage medium having computer program instructions stored therein, which, when executed by a processor, realizes any one of the battery and control methods thereof in the above embodiments.

[0126] It should be noted that the present application is not limited to the specific configurations and processes described above and illustrated in the drawings. For the sake of simplicity, detailed descriptions of known methods are omitted herein. In the above embodiments, some specific steps are described and illustrated as examples. However, the method process of the present application is not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present application.

[0127] The functional blocks illustrated in the above-described block diagrams can be implemented as hardware, software, firmware, or a combination thereof. When implemented as hardware, the hardware may be, for example, an electronic circuit, an application-specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, or the like. When implemented as software, the elements of this application are programs or code segments for performing the necessary tasks. The programs or code segments may be stored on a machine-readable medium or transmitted by a data signal carried on a carrier wave over a transmission medium or a communication link. The term "machine-readable medium" may include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments may also be downloaded via a computer network such as the Internet or an intranet.

[0128] It should be noted that the exemplary embodiments described herein describe some methods or systems based on a sequence of steps or devices, but the present application is not limited to the order of the steps described above, i.e., steps may be performed according to the order described in the embodiments, or may be performed in a different order than in the embodiments, or multiple steps may be performed simultaneously.

[0129] Aspects of the present disclosure are described above with reference to flowcharts and / or block diagrams of methods, apparatuses, devices, and computer program products according to embodiments of the present disclosure. It should be understood that each block in the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, may be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus, thereby generating an apparatus, such that the instructions, when executed by the processor of the computer or other programmable data processing apparatus, implement the functions / operations specified in one or more blocks in the flowcharts and / or block diagrams. Such a processor may be, but is not limited to, a general-purpose processor, a special-purpose processor, a special-purpose application processor, or a field-programmable logic circuit. It should be understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by dedicated hardware that performs the specified functions or operations, or by a combination of dedicated hardware and computer instructions.

[0130] Finally, it should be noted that the above embodiments merely illustrate the technical solutions of the present application and are not intended to limit the same. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art may still modify the technical solutions described in the above embodiments or make equivalent substitutions for some or all of the technical features therein. These modifications or substitutions will not deviate from the essence of the corresponding technical solutions and the scope of the technical solutions of the embodiments of the present application, and all of them will be understood to be included in the claims and description of the present application. In particular, as long as there is no structural contradiction, the technical features mentioned in the embodiments can be arbitrarily combined. The present application is not limited to the specific embodiments disclosed above, but includes all technical solutions included within the scope of the claims.

Claims

1. Acquiring a target image of an electrode sheet to be detected, the electrode sheet to be detected including an anode sheet and separators stacked on both sides of the anode sheet; performing image processing on the target image to determine a target image region in the target image; and performing positional deviation detection for a separator in the electrode sheet to be detected based on the target image area, The detection of the positional deviation of the separator in the electrode sheet to be detected based on the target image area is obtaining the number of separator image sub-areas in the target image area, the separator image sub-areas being image areas corresponding to separators stacked on both side surfaces of the anode sheet; determining a separator misalignment result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area, and the separator misalignment result is used to indicate whether the separator of the electrode sheet to be detected has been misaligned; determining a separator misalignment result of the electrode sheet to be detected based on a number of separator image sub-areas in the target image area; When the number of separator image sub-areas in the target image is a first predetermined number, determining that the separator misalignment result of the electrode sheet to be detected is a first sub-result for indicating that the separator of the electrode sheet to be detected is not misaligned; A separator detection method comprising: when the number of separator image sub-areas in the target image is a second predetermined number, determining that the separator misalignment result of the electrode sheet waiting to be detected is a second sub-result for indicating that the separator of the electrode sheet waiting to be detected is misaligned, wherein the second predetermined number is different from the first predetermined number.

2. Obtaining the number of separator image sub-regions in the target image region includes: performing a grayscale image segmentation process on the target image region to obtain N separator image sub-regions having different grayscales, where N is a positive integer; 2. The separator detection method of claim 1, wherein N is the number of separator image sub-regions in the target image.

3. 2. The separator detection method of claim 1, further comprising: outputting fault notification information when the number of separator image sub-areas in the target image is a third predetermined number, the third predetermined number being different from the first predetermined number and the second predetermined number.

4. After detecting a positional deviation of the separator in the electrode sheet to be detected based on the target image area, The separator detection method according to claim 1, further comprising, when it is detected that the separator of the electrode sheet before detection has been misaligned, determining the amount of misalignment of the separator in the electrode sheet before detection based on the target image area.

5. When it is detected that the separator of the electrode sheet before detection has been misaligned, determining the amount of misalignment of the separator in the electrode sheet before detection based on the target image area, When it is detected that the separator of the electrode sheet to be detected has shifted in position, determining a single-layer separator region and a two-layer separator region in the separator image sub-region of the target image; performing edge detection on the single-layer separator region and the dual-layer separator region, respectively, to obtain a first region edge of the single-layer separator region and a second region edge of the dual-layer separator region, the second region edge corresponding to the first region edge; The separator detection method according to claim 4 , further comprising determining that the distance between the first area edge and the second area edge is the amount of misalignment of the separator in the electrode sheet to be detected.

6. Obtaining a third region edge, which is an edge of an image region in the target image corresponding to the anode sheet or the cathode sheet, the third region edge corresponding to the second region edge; 6. The method of claim 5, further comprising determining a distance between the third region edge and the second region edge.

7. an image acquisition module for acquiring a target image of a to-be-detected electrode sheet, the to-be-detected electrode sheet including an anode sheet and separators stacked on both sides of the anode sheet; an image region determination module that performs image processing on the target image and determines a target image region in the target image; a positional deviation detection module that detects a positional deviation with respect to a separator in the electrode sheet to be detected based on the target image area, The position deviation detection module includes: an area number acquisition unit for acquiring the number of separator image sub-areas in the target image area, the separator image sub-areas being image areas corresponding to separators stacked on both side surfaces of the anode sheet; a misalignment result determination unit that determines a separator misalignment result of the electrode sheet to be detected based on the number of separator image sub-areas in the target image area, and the separator misalignment result is used to indicate whether the separator of the electrode sheet to be detected has been misaligned; The misregistration result determination unit comprises: a first sub-result determination subunit for determining that a separator misalignment result of the electrode sheet to be detected is a first sub-result when the number of separator image sub-regions in the target image is a first predetermined number, and the first sub-result is used to indicate that the separator of the electrode sheet to be detected is not misaligned; A separator detection device comprising: a second sub-result determination subunit that determines that the separator misalignment result of the electrode sheet waiting to be detected is a second sub-result when the number of separator image sub-areas in the target image is a second predetermined number, the second predetermined number being different from the first predetermined number, and the second sub-result being used to indicate that the separator of the electrode sheet waiting to be detected is misaligned.

8. The region number acquisition unit performing a grayscale image segmentation process on the target image region to obtain N separator image sub-regions having different grayscales, where N is a positive integer; 8. The separator detection device according to claim 7, wherein N is the number of separator image sub-regions in the target image.

9. The separator detection device of claim 7 , further comprising a presentation information output module for outputting fault presentation information when the number of separator image sub-regions in the target image is a third predetermined number different from the first predetermined number and the second predetermined number.

10. The separator detection device described in claim 9 further comprises a misalignment amount determination module that, when it is detected that the separator of the electrode sheet before detection has been misaligned, determines the amount of misalignment of the separator in the electrode sheet before detection based on the target image area.

11. The misregistration amount determination module a separator region determination unit that, when detecting that the separator of the electrode sheet to be detected has shifted in position, determines a single-layer separator region and a two-layer separator region in the separator image sub-region of the target image; an edge detection unit for performing edge detection on the single-layer separator region and the dual-layer separator region, respectively, to obtain a first region edge of the single-layer separator region and a second region edge of the dual-layer separator region, the second region edge corresponding to the first region edge; The separator detection device according to claim 10 , further comprising: a positional deviation amount determination unit that determines the distance between the first area edge and the second area edge as the positional deviation amount of the separator in the electrode sheet to be detected.

12. an edge acquisition module for acquiring a third region edge, which is an edge of an image region in the target image corresponding to the anode sheet or the cathode sheet, and the third region edge corresponds to the second region edge; The separator detection apparatus of claim 11 , further comprising: a spacing determination module that determines a spacing between the third region edge and the second region edge.

13. A superposition device comprising a processor, a memory, and a program or instructions stored in the memory and executable by the processor, the program or instructions, when executed by the processor, realizing the steps of the separator detection method of any one of claims 1 to 6.

14. A readable storage medium having stored thereon a program or instructions, which, when executed by a processor, implements the steps of the separator detection method according to any one of claims 1 to 6.

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