Layered detection device and layered detection method for multi-layer tab burrs

Abstract

The invention relates to the technical field of battery cell tab detection, in particular to a layering detection device and method for multilayer tab burrs, and the layering detection device comprises a visual detection structure, a material moving structure and a tab layering structure, and the visual detection structure is provided with a tab detection position; the material moving structure can clamp a battery cell and move the battery cell to a tab detection position, and a to-be-detected tab of the battery cell faces the visual detection structure; the tab layering structure is mounted on the visual detection structure corresponding to the tab detection position, and the tab layering structure is used for driving to-be-detected tabs of the battery cell to be layered. The laminated multi-layer tabs are physically separated through the tab layering structure, and the problem that the middle-layer tabs cannot be seen through in traditional visual detection is solved, so that the burrs of the multi-layer tabs are comprehensively and accurately detected, accurate feedback is provided for the tab cutting process, and the quality and consistency of battery cell products are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery cell tab detection, and specifically relates to a layered detection device and method for multi-layer tab burrs. BACKGROUND

[0002] In the manufacturing process of lithium ion batteries, the tab, as a key component for connecting the internal tab of the battery cell and the external circuit, directly affects the safety performance and cycle life of the battery. The tab is usually made of metal strip through die stamping or precision cutting process. However, burrs are easily generated at the edge of the tab due to the shearing force during the cutting process.

[0003] At present, the industry often uses a visual detection system to automatically detect tab burrs. The traditional detection method is mostly based on two-dimensional imaging technology, which captures the tab edge image through a camera, and then identifies the burr by combining image processing algorithms. However, in actual production, the tabs of the battery cell are often in a multi-layer stacked structure, similar to the state of stacked book pages, which makes it difficult for the visual system to penetrate the outer tab and effectively detect the burr of the middle layer tab. This detection blind area makes the existing technology have obvious limitations in detecting tab burrs of multi-layer tabs, and it is difficult to achieve comprehensive and accurate quality control. SUMMARY

[0004] Therefore, the present application provides a layered detection device and method for multi-layer tab burrs to solve the problem of obvious limitations in detecting tab burrs of multi-layer tabs in the prior art, which makes it difficult to achieve comprehensive and accurate quality control.

[0005] In a first aspect, the present application provides a layered detection device for multi-layer tab burrs, comprising: a visual detection structure, wherein the visual detection structure is provided with a tab detection position; a material moving structure, wherein the material moving structure can clamp a battery cell and move the battery cell to the tab detection position, and the tab to be detected of the battery cell faces the visual detection structure; a tab layering structure, wherein the tab layering structure is installed on the visual detection structure corresponding to the tab detection position, and the tab layering structure is used to separate the tab to be detected of the battery cell into layers.

[0006] Beneficial effects: The tab layering structure physically separates the stacked multi-layer tabs, solves the problem that the traditional visual detection cannot penetrate the middle layer tab, and thus achieves comprehensive and accurate detection of the tab burrs of the multi-layer tabs, provides accurate feedback for the tab cutting process, and significantly improves the quality and consistency of the battery cell products.

[0007] In an optional embodiment, the tab layering structure comprises: The jacking module is installed on the visual detection mechanism; The horizontal moving assembly is installed on the output end of the jacking module; The support is connected with the horizontal moving assembly, and the mounting groove is formed in the support; The tab jacking piece is fixed in the mounting groove.

[0008] In an alternative embodiment, the horizontal moving assembly comprises: The mounting plate is installed on the output end of the jacking module; The compression spring piece is horizontally fixed on one side of the mounting plate close to the material moving structure; The telescopic block is connected with the compression spring piece, and the compression spring piece can drive the telescopic block to move horizontally, and the support is installed on the telescopic block; The guide rail is installed on the top surface of the jacking module, and the bottom end of the support is installed on the guide rail.

[0009] In an alternative embodiment, the tab jacking piece is made of transparent material; The top end of the tab jacking piece is provided with a jacking camber.

[0010] Beneficial effects: Through the above setting, the guide rail ensures that the support and the tab jacking piece remain stable during horizontal movement and do not deviate. Through the synergistic effect of the jacking module and the horizontal moving assembly, the composite motion of the tab jacking piece in the vertical and horizontal directions is realized, the actual position change of the tab of the battery cell is adapted, and the jacking precision and adaptability are improved. The combination of the compression spring piece and the guide rail not only provides the adjustment ability in the horizontal direction, but also ensures the movement stability, effectively prevents the damage of the tab, and the transparent tab jacking piece cooperates with the jacking camber design to realize the tab layering without affecting the optical detection path, improve the imaging quality and detection reliability.

[0011] In an alternative embodiment, the visual detection structure comprises: The base frame; The coaxial light source is fixed on the base frame, and the coaxial light source is located on the side of the jacking piece away from the material moving structure; The camera is installed on the base frame on the side of the coaxial light source away from the jacking piece, and the camera is installed with a lens on the side close to the coaxial light source; The pressing module is connected with the base frame, and the background plate is fixed on the pressing module, and the background plate is located on the side of the tab jacking piece away from the coaxial light source.

[0012] In an alternative embodiment, the background plate is made of opaque material.

[0013] Beneficial effects: When the tab layer structure lifts and arranges the multi-layer tabs, the lower pressing module drives the background plate to move downward, so that it is located on the side of the chip away from the coaxial light source. The light emitted by the coaxial light source penetrates the transparent tab lifting member and irradiates the edge of the staggered arranged tab. The camera collects clear images of the tab edge through the lens. The opaque background plate effectively isolates the rear environmental interference, ensuring that the image background is pure, which is conducive to the accurate identification of the burr feature by the subsequent image processing algorithm.

[0014] In an alternative embodiment, the material moving structure comprises: The battery cell mounting rack is fixedly installed on the moving module. The battery cell mounting bottom plate is fixedly installed on the battery cell mounting rack. The battery cell side edge pressing block is movably installed on the battery cell mounting rack. The battery cell side edge pressing block is provided with two, and the two battery cell side edge pressing blocks are symmetrically arranged to form an installation channel for placing the battery cell. The battery cell pushing member is provided on the side of the installation channel away from the visual inspection structure. The battery cell pushing member can push the battery cell in the installation channel to move towards the visual inspection structure.

[0015] In an alternative embodiment, the material moving structure further comprises a battery cell upper surface pressing block, which is installed on the battery cell mounting bottom plate. The battery cell upper surface pressing block is adapted to press the upper surface of the battery cell in the installation channel.

[0016] Beneficial effects: The battery cell side edge pressing block can clamp the battery cell from both sides to limit its horizontal displacement. The battery cell pushing member is provided on the side of the installation channel away from the visual inspection structure, and can move axially along the installation channel to push the battery cell towards the visual inspection structure. The battery cell upper surface pressing block is installed on the battery cell mounting bottom plate, and its pressing block is located above the installation channel and is adapted to press the upper surface of the battery cell in the installation channel downward to prevent the battery cell from jumping or moving vertically during detection.

[0017] In an alternative embodiment, the material moving structure further comprises a model changing adjusting member, which is adapted to be installed on the moving module. The model changing adjusting member is used to adjust the distance between the two battery cell side edge pressing blocks.

[0018] In a second aspect, the present application also provides a multi-layer tab burr layering detection method based on the multi-layer tab burr detection device, comprising the following steps: moving the material moving mechanism with the battery cell clamped to move the battery cell to the tab detection position; controlling the tab layering structure to layer the multi-layer tabs of the battery cell; controlling the visual detection structure to take a photo of the layered tabs to obtain image information of the multi-layer tabs to be detected in the layered state; and determining the tab burr data of the multi-layer tabs according to the image information.

[0019] In an optional embodiment, the step of controlling the tab layering structure to layer the multi-layer tabs of the battery cell comprises: controlling the horizontal moving assembly to move the tab lifting piece to be directly below the tab to be detected; and controlling the lifting assembly to lift the tab lifting piece until the tab lifting piece lifts the tab upward to layer the tab.

[0020] In an optional embodiment, the step of controlling the visual detection structure to take a photo of the layered tabs to obtain image information of the multi-layer tabs to be detected in the layered state comprises: controlling the lower pressing mold group to move the background plate to a preset position; and controlling the visual detection structure to take a photo of the layered tabs to obtain image information of the multi-layer tabs to be detected in the layered state. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the multi-layer tab burr layering detection device of the embodiment of the present application; Figure 2 FIG. 2 is a schematic diagram of the structure of the tab layering structure and the visual detection structure of the embodiment of the present application; Figure 3 FIG. 3 is a schematic diagram of the structure of the tab layering structure of the embodiment of the present application from another angle; Figure 4 FIG. 4 is a schematic diagram of the structure of the material moving structure of the embodiment of the present application; Figure 5 FIG. 5 is a schematic diagram of the tab lifting piece lifting the tab of the battery cell in the embodiment of the present application; FIG. 1 is a schematic diagram of the overall structure of the multi-layer tab burr layering detection device of the embodiment of the present application; 1, visual detection structure; 11, base frame; 12, coaxial light source; 13, camera; 14, lower pressing mold group; 15, background plate; 2. Material transfer structure; 21. Cell mounting bracket; 22. Moving module; 23. Cell mounting base plate; 24. Cell side pressure block; 25. Cell pushing component; 26. Cell upper surface pressure block; 27. Shape change adjustment component; 3. Layered structure of the electrode tab; 31. Lifting module; 32. Horizontal movement assembly; 321. Mounting plate; 322. Compression spring; 323. Telescopic block; 324. Guide rail; 33. Support component; 34. Mounting groove; 35. Electrode tab lifting component; 4. Battery cell; 41. Electrode tab. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In the manufacturing process of lithium-ion batteries, the tabs, as key components connecting the internal electrodes of the cell to the external circuitry, directly affect the battery's safety performance and cycle life. Tabs are typically made from metal strips through die stamping or precision cutting processes. During the cutting process, burrs are easily generated on the edges of the tabs due to shearing forces.

[0025] Currently, the industry commonly uses vision inspection systems for automated detection of burrs on battery tabs. Traditional inspection methods are mostly based on two-dimensional imaging technology, using a camera to capture images of the tab edges and then combining them with image processing algorithms to identify burrs. However, in actual production, the tabs of battery cells are often arranged in a multi-layered, stacked structure, similar to the overlapping pages of a book. This makes it difficult for vision systems to penetrate the outer tabs and effectively detect burrs on the middle tabs. This blind spot significantly limits the current technology for burr detection on multi-layered tabs, making it difficult to achieve comprehensive and accurate quality control.

[0026] To solve the above technical problems, the following will be combined with... Figures 1 to 5 The following describes embodiments of the present invention.

[0027] According to embodiments of the present invention, in one aspect, a layered detection device for multilayer electrode tab burrs is provided, such as... Figures 1 to 5As shown, the device includes: a vision inspection structure 1, a material transfer structure 2, and a tab layering structure 3. The vision inspection structure 1 has tab detection positions and can acquire images of the multiple layers of tabs at the tab detection positions. The material transfer structure 2 can clamp the battery cell 4 and move the battery cell 4 to the tab detection positions, with the tabs 41 to be detected on the battery cell facing the vision inspection structure 1. The tab layering structure 3 is installed on the vision inspection structure 1 corresponding to the tab detection positions and is used to drive the tabs 41 to be detected on the battery cell 4 to be layered.

[0028] When the tabs 41 of the battery cell 4 need to be inspected, the battery cell 4 is clamped and pushed to the tab detection position by the material transfer structure 2, with the tabs 41 of the battery cell 4 facing the vision inspection structure 1. The tab layering structure 3 is activated, and its output end touches the tabs 41 of the battery cell 4, causing the multi-layer tabs 41 to separate in a staggered manner. The vision inspection structure 1 acquires the edge image of the tabs 41, and the image is transmitted to the processing system for burr recognition and analysis. Based on the inspection results, feedback can be given to the previous tab 41 cutting process to achieve closed-loop quality control.

[0029] By physically separating the stacked multi-layered tabs 41 through the tab layer structure 3, the problem that traditional visual inspection cannot see through the middle layer tabs 41 is solved, thereby realizing comprehensive and accurate inspection of burrs on the multi-layered tabs 41 and providing accurate feedback for the tab 41 cutting process, significantly improving the product quality and consistency of the cell 4.

[0030] In one implementation, such as Figures 1 to 3As shown, the tab layer structure 3 includes a lifting module 31, a horizontal moving component 32, a support member 33, and a tab lifting member 35. The lifting module 31 is a lifting cylinder, which is mounted on the base frame 11 of the vision inspection structure 1. The lifting module 31 serves as the vertical drive source for the tab layer structure 3, and its output end can perform up-and-down reciprocating motion. The horizontal moving component 32 is mounted on the output end of the lifting module 31 and is used to adjust the position of the tab lifting member 35 in the horizontal direction. The horizontal moving component 32 specifically includes: a mounting plate 321, a compression spring 322, a telescopic block 323, and a guide rail 324. The mounting plate 321 is fixed to the output end of the lifting module 31. The compression spring 322 is horizontally fixed on the side of the mounting plate 321 near the material transfer structure 2. There are two compression springs 322, which are at the same horizontal height and located on both sides of the mounting plate 321. The compression springs 322 provide elastic restoring force and horizontal buffer movement. The telescopic block 323 is located on the side of the compression spring 322 near the material transfer structure 2. The telescopic block 323 is placed horizontally, and both ends of the telescopic block 323 are connected to the compression spring 322, allowing it to move horizontally under the action of spring force. The guide rail 324 is installed on the top surface of the lifting module 31. A slider is installed on the side of the telescopic block 323 near the guide rail 324. The slider is mounted on the guide rail 324, which guides the support member 33 and the lifting member 35 mounted on it to move smoothly in the horizontal direction.

[0031] The support member 33 is connected to the telescopic block 323 in the horizontal moving assembly 32. The support member 33 has an upward-facing mounting groove 34 for fixing the tab lifting member 35. The tab lifting member 35 is made of transparent material and is fixed in the mounting groove 34 of the support member 33. The top of the tab lifting member 35 is provided with a lifting arc surface. This arc surface design facilitates smooth contact with and lifting of the tab 41, reducing the risk of scratching the surface of the tab 41.

[0032] After the battery cell 4 is positioned to the tab detection position by the transfer structure 2, the compression spring 322 can drive the telescopic block 323 to move horizontally along the guide rail 324 towards or away from the transfer structure 2. The telescopic block 323, through the support 33, drives the tab lifting component 35 to move directly below the tab 41 to be detected on the battery cell 4. The lifting module 31 is activated, driving the horizontal moving component 32 and the tab lifting component 35 to rise as a whole. The lifting arc surface of the tab lifting component 35 contacts the bottom of the multi-layer tabs 41 and lifts them upward, causing the tabs 41 to be separated into different layers. The visual inspection structure 1 captures images of the edges of the separated tabs 41 through the transparent tab lifting component 35 to achieve burr detection.

[0033] Through the above configuration, the guide rail 324 ensures that the support member 33 and the tab lifting member 35 remain stable during horizontal movement, without any deviation. Through the coordinated action of the lifting module 31 and the horizontal movement component 32, the tab lifting member 35 achieves composite movement in both vertical and horizontal directions, adapting to the actual positional changes of the tabs 41 in the battery cell 4, thus improving lifting accuracy and adaptability. The combination of the compression spring member 322 and the guide rail 324 provides both horizontal adjustment capability and ensures movement stability, effectively preventing damage to the tabs 41. The transparent tab lifting member 35, with its lifting arc surface design, achieves layering of the tabs 41 without affecting the optical detection path, improving imaging quality and detection reliability.

[0034] In one embodiment, such as Figure 1 and Figure 2 As shown, the multi-layer tab burr detection device includes two visual inspection structures 1, which are symmetrically arranged side by side. Taking one of the visual inspection structures 1 as an example, its specific structure includes a base frame 11, a coaxial light source 12, a camera 13, a pressing module 14, and a background plate 15. The base frame 11 is the main support frame of the visual inspection structure 1. The coaxial light source 12 is fixed on the base frame 11 and located on the side of the tab lifting member 35 away from the material transfer structure 2. Its light emission direction is towards the tab lifting member 35 and the tab to be inspected, providing uniform, low-angle illumination. The camera 13 is mounted on the base frame 11 on the side of the coaxial light source 12 away from the tab lifting member 35. A lens is mounted on the side of the camera 13 closest to the coaxial light source 12 to acquire the light path image reflected from the edge of the tab 41. The camera 13, lens, and coaxial light source 12 together constitute a coaxial optical path imaging system. The pressure module 14 is connected to the base frame 11, and a background plate 15 is fixed to its output end. The background plate 15 is located on the side of the tab lifting member 35 away from the coaxial light source 12 and is arranged opposite to the imaging system. The background plate 15 is made of an opaque material, preferably green or other high-contrast colors, to enhance the distinction between the edge of the tab 41 and the background in the image. The coaxial light source 12, lens, camera 13, and tab lifting member 35 are made of transparent materials.

[0035] like Figure 5 As shown, when the tab layer structure 3 lifts up and staggers the multiple tabs 41, the pressing module 14 drives the background plate 15 to move downward, so that it is located on the side of the tab 41 to be tested on the chip away from the coaxial light source 12, which plays a role in positioning and background masking. The light emitted by the coaxial light source 12 penetrates the transparent tab lifting component 35 and illuminates the edge of the staggered tabs 41. The camera 13 captures a clear image of the edge of the tab 41 through the lens. The opaque background plate 15 effectively isolates the interference from the background environment, ensuring that the image background is pure, which is conducive to the subsequent image processing algorithm to accurately identify burr features.

[0036] In one embodiment, such asFigure 1 and Figure 4 As shown, the material transfer structure 2 includes a cell mounting frame 21, a cell mounting base plate 23, a cell side pressing block 24, a cell pushing component 25, a cell upper surface pressing block 26, and a shape changing adjustment component 27.

[0037] The cell mounting bracket 21 is fixedly mounted on the moving part of the moving module 22, and can drive the entire material transfer structure 2 to move under the drive of the moving module 22. The cell mounting base plate 23 is fixedly mounted on the cell mounting bracket 21, providing a stable placement plane for the cell 4. Two cell side clamping blocks 24 are movably mounted on the cell mounting bracket 21. The two cell side clamping blocks 24 are symmetrically arranged to form an installation channel for placing the cell 4. The cell side clamping blocks 24 can clamp the cell 4 from both sides, limiting its horizontal displacement. The cell pusher 25 is located on the side of the installation channel away from the visual inspection structure 1. It can move along the axial direction of the installation channel, pushing the cell 4 towards the direction closer to the visual inspection structure 1, until it pushes the tab 41 to be inspected on the cell 4 to the tab detection position. The cell upper surface clamping block 26 is mounted on the cell mounting base plate 23. Its pressing block is located above the installation channel and is suitable for pressing down on the upper surface of the cell 4 in the installation channel to prevent the cell 4 from jumping or displacing vertically during the inspection process. The moving module 22 is a precision linear drive mechanism, such as a ball screw slide module or a synchronous belt linear module driven by a servo motor.

[0038] The battery cell 4 is placed into the mounting channel formed by two battery cell side pressure blocks 24 and the battery cell mounting base plate 23 by a robotic arm. The output end of the battery cell 4 pusher is initially located on the side of the mounting channel away from the visual inspection structure 1. The battery cell pusher 25 moves to push the electrode 41 to be inspected of the battery cell 4 along the mounting channel to the electrode detection position, so that the electrode 41 to be inspected is facing the visual inspection structure 1. After positioning is completed, the upper surface pressure block 26 of the battery cell presses down to fix the upper surface of the battery cell 4. The electrode layering structure 3 works in conjunction with the visual inspection structure 1 to perform the electrode 41 layering and burr detection operation.

[0039] After the test is completed, the pressure block 26 on the upper surface of the cell rises, releasing the cell 4. The robotic arm then removes the cell 4 from the installation channel and places the next batch of cells 4 that need to be tested by the tab 41.

[0040] The material transfer structure 2 in this application is also provided in two versions corresponding to the visual inspection structure 1, which can simultaneously inspect the tabs 41 to be inspected on two battery cells 4, thereby improving inspection efficiency.

[0041] In one embodiment, the material transfer structure 2 further includes a changeover adjustment component 27, which is adapted to be mounted on the moving module 22. The changeover adjustment component 27 is generally T-shaped and is used to adjust the distance between the two cell side clamping blocks 24. The changeover adjustment component 27 utilizes rear-mounted changeover ears with standardized intervals. The outer sides of the two cell side clamping blocks 24 are clamped between the two changeover ears, thereby adjusting the distance between the two side clamping blocks according to the specifications of the cell 4, enabling the clamping of the two sides of cell 4 of different specifications. The changeover adjustment component 27 is adapted to be mounted on the moving module 22 to adjust the distance between the two cell side clamping blocks 24 to accommodate cell 4 of different widths, achieving rapid changeover and improving the versatility of the equipment and production line compatibility.

[0042] According to an embodiment of the present invention, in another aspect, a method for layered detection of multilayer tab burrs is also provided, adapted to the above-described multilayer tab burr layered detection device, comprising the following steps: Step S1: Control the movement of the transfer mechanism 2 holding the battery cell 4 to move the battery cell 4 to the tab detection position. The battery cell 4 is placed into the mounting channel formed by the two battery cell side pressure blocks 24 and the battery cell mounting base plate 23 by the robot arm. The output end of the battery cell 4 pusher is initially located on the side of the mounting channel away from the vision inspection structure 1. The battery cell pusher 25 moves to push the tab 41 to be detected of the battery cell 4 along the mounting channel to the tab detection position, so that the tab 41 to be detected is facing the vision inspection structure 1. After positioning is completed, the upper surface pressure block 26 of the battery cell presses down to fix the upper surface of the battery cell 4. At this time, the tab 41 to be detected on the battery cell 4 is in the tab detection position.

[0043] Step S2: Control the movement of the tab layering structure 3 to drive the multi-layer tabs 41 of the battery cell 4 to be layered. The horizontal moving component 32 drives the tab lifting component 35 to move directly below the tab 41 to be tested. The lifting component drives the tab lifting component 35 to rise until the tab lifting component 35 lifts the tab 41 upward to layer the tabs 41.

[0044] Specifically, after the battery cell 4 is positioned to the tab detection position by the material transfer structure 2, the compression spring 322 can be activated first. The spring compression component drives the telescopic block 323 to move horizontally along the guide rail 324. The telescopic block 323 drives the tab lifting component 35 to move directly below the tab 41 to be detected on the battery cell 4 through the support component 33. The lifting module 31 is activated, driving the horizontal moving component 32 and the tab lifting component 35 to rise as a whole. The lifting arc surface of the tab lifting component 35 contacts the bottom of the multi-layer tab 41 and lifts it upward, causing the tabs 41 to separate in a staggered manner.

[0045] Step S3: Control the visual inspection structure 1 to take pictures of the layered tabs 41 to obtain image information of the multi-layer tabs 41 under the layered state; determine the burr data of the multi-layer tabs 41 based on the image information.

[0046] The visual inspection structure 1 is activated, and the pressing module 14 moves the background plate 15 to a preset position. The visual inspection structure 1 then takes pictures of the layered tabs 41 for inspection.

[0047] When the tab layer structure 3 lifts up and misaligns the multiple tabs 41, the pressing module 14 drives the background plate 15 to move downward, so that it is located on the side of the tab 41 to be tested on the chip away from the coaxial light source 12, which plays a role in positioning and background masking. The visual inspection structure 1 performs image acquisition on the edge of the misaligned tab 41 through the transparent tab lifting member 35 to realize burr detection.

[0048] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A multi-layer electrode burr detection device, characterized in that, include: A visual detection structure (1) is provided with a tab detection position; Material transfer structure (2), which can clamp the battery cell (4) and move the battery cell (4) to the electrode detection position, wherein the electrode (41) to be detected of the battery cell (4) faces the visual detection structure (1). The electrode layer structure (3) is installed on the visual detection structure (1) corresponding to the electrode detection position. The electrode layer structure (3) is used to drive the electrode (41) to be detected of the battery cell (4) to be layered.

2. The multi-layer electrode burr detection device according to claim 1, characterized in that, The electrode layered structure (3) includes: A lifting module (31) is mounted on the vision inspection mechanism; A horizontal moving component (32) is installed at the output end of the lifting module (31); Support member (33), the support member (33) is connected to the horizontal moving component (32), and the support member (33) is provided with a mounting groove (34). The electrode lifting member (35) is fixed in the mounting groove (34).

3. The multi-layer electrode burr detection device according to claim 2, characterized in that, The horizontal movement component (32) includes: Mounting plate (321), which is mounted on the output end of the lifting module (31); A compression spring (322) is horizontally fixed to the side of the mounting plate (321) near the material transfer structure (2); Telescopic block (323), the telescopic block (323) is connected to the compression spring (322), the compression spring (322) can drive the telescopic block (323) to move horizontally, and the support (33) is installed on the telescopic block (323); The guide rail (324) is mounted on the top surface of the lifting module (31), and the bottom end of the support member (33) is mounted on the guide rail (324).

4. The multi-layer electrode burr detection device according to claim 2, characterized in that, The pole ear lifting component (35) is made of transparent material; The top end of the electrode lifting member (35) is provided with a lifting arc surface.

5. The multi-layer electrode burr detection device according to claim 2, characterized in that, The visual detection structure (1) includes: Base frame (11); A coaxial light source (12) is fixed on the base frame (11) and the coaxial light source (12) is located on the side of the lifting member away from the material transfer structure (2); Camera (13), the camera (13) is mounted on a base frame (11) on the side of the coaxial light source (12) away from the lifting member, and the camera (13) has a lens mounted on the side of the coaxial light source (12); The pressing module (14) is connected to the base frame (11). A background plate (15) is fixed on the pressing module (14). The background plate (15) is located on the side of the electrode lifting member (35) away from the coaxial light source (12).

6. The multi-layer electrode burr detection device according to claim 5, characterized in that, The background panel (15) is made of an opaque material.

7. The multi-layer electrode burr detection device according to claim 2, characterized in that, The material transfer structure (2) includes: A cell mounting bracket (21) is fixedly mounted on a mobile module (22); A cell mounting base plate (23) is fixedly mounted on a cell mounting frame (21); Cell side pressure block (24), the cell side pressure block (24) is movably mounted on the cell mounting bracket (21), and there are two cell side pressure blocks (24), the two cell side pressure blocks (24) are symmetrically arranged to form an installation channel for placing the cell (4); A cell pusher (25) is disposed on the side of the mounting channel away from the visual inspection structure (1). The cell pusher (25) can push the cell (4) in the mounting channel to move toward the visual inspection structure (1).

8. The multi-layer electrode burr detection device according to claim 7, characterized in that, The material transfer structure (2) also includes a cell upper surface pressing block (26), which is installed on the cell mounting base plate (23) and is adapted to press the upper surface of the cell (4) in the mounting channel.

9. The multi-layer electrode burr detection device according to claim 7, characterized in that, The material transfer structure (2) also includes a shape-changing adjustment component (27), which is adapted to be installed on the moving module (22) and is used to adjust the distance between the two battery cell side pressure blocks (24).

10. A method for layered detection of multilayer electrode tab burrs, characterized in that, A multilayer electrode burr detection device based on any one of claims 1-9; the method includes the following steps: The control clamp moves the transfer mechanism (2) holding the battery cell (4) to move the battery cell (4) to the electrode detection position; Control the movement of the electrode layer structure (3) to drive the multi-layer electrode (41) of the cell (4) to layer; The visual detection structure (1) is controlled to take pictures of the layered tabs (41) to obtain image information of the multi-layered tabs (41) under the layered state; Based on the image information, the burr data of the multilayer tab (41) are determined.

11. The method for layered detection of multi-layer electrode tab burrs according to claim 10, characterized in that, A layered detection device for multilayer electrode burrs based on any one of claims 2-9; Controlling the movement of the electrode layer structure (3) to drive the multi-layer electrode (41) of the cell (4) to layer, including: The horizontal movement component (32) drives the electrode lifting component (35) to move directly below the electrode to be tested (41); The control lifting assembly drives the electrode lifting component (35) to rise until the electrode lifting component (35) lifts the electrode (41) upward to separate the electrode (41) into layers.

12. The method for layered detection of multi-layer electrode tab burrs according to claim 10, characterized in that, A layered detection device for multi-layer electrode burrs based on claim 5 or 6. The control vision detection structure (1) takes pictures of the layered tabs (41) to obtain image information of the multi-layered tabs (41) under the layered state, including: Control the pressing module (14) to move the background plate (15) to the preset position; The visual detection structure (1) is controlled to take pictures of the layered tabs (41) to obtain image information of the multi-layered tabs (41) under the layered state.

Images