Apparatus for high speed detection of battery surfaces

CN224887934UActive Publication Date: 2026-10-23HEFEI ANXIN PRECISION TECH CO LTD
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Patent Information

Application Number
CN202522346112.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Priority Date
2025-04-11
Filing Date
2025-11-05
Publication Date
2026-10-23
Estimated Expiration
2035-11-05

AI Technical Summary

Technical Problem

然而,现有设备在实际使用过程中存在一些功能上的不足,具备一定的改进空间,如双滚筒时在高速转动过程中,一旦电池表面和滚筒之间的摩擦力出现不均衡,或电池内部重心不平衡,则很容易出现电池跳动的情况,影响相机扫描的精确性

Benefits of technology

[0014]通过上述技术方案,将圆柱电池卡在可旋转气动夹爪处,接着启动气缸,气缸推动滑块沿着固定滑轨位移,将活动夹具抵紧在电池尾端,伺服电机带动可旋转气动夹爪高速转动,电池同步转动,采用可旋转气动夹爪、活动夹具将电池两端抵紧的夹持旋转方式,使电池在旋转过程中不容易发生跳动,实现了防止电池跳动的功能。因此,防跳动限位机构通过可旋转气动夹爪与活动夹具的双端夹紧结构,实现高速旋转下的稳定夹持。

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Abstract

The utility model relates to lithium cell detection technical field discloses a kind of equipment for battery surface high-speed detection, comprising: detection table and be located on the anti-bounce limiting mechanism of the detection table, the anti-bounce limiting mechanism includes rotatable pneumatic clamping jaw, movable clamp, fixed slide rail and sliding block, rotatable pneumatic clamping jaw and fixed slide rail are respectively fixed on the detection table;Rotatable pneumatic clamping jaw is rotated by servo motor drive, for clamping battery one end to drive battery rotation;Sliding block is slidably connected with the fixed slide rail, movable clamp is located on the sliding block corresponding rotatable pneumatic clamping jaw, moves under the sliding block, for cooperating rotatable pneumatic clamping jaw and battery two ends. The scheme uses rotatable pneumatic clamping jaw, movable clamp and holds the clamping rotation mode of battery two ends, so that battery is not prone to bounce in the rotation process, realizes the function of preventing battery bounce.
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Description

Technical Field

[0001] This utility model relates to the field of lithium battery testing technology, and specifically to a device for high-speed testing of battery surfaces. Background Technology

[0002] During the production process, cylindrical lithium batteries require surface inspection to ensure that the battery surface is flat and free from dents, expansions, and cracks.

[0003] Most current lithium battery production workshops use similar equipment for battery bounce detection, typically employing a dual-roller design. This involves placing cylindrical batteries on two sets of high-speed rotating rollers, which rotate the batteries, allowing a camera to quickly scan and capture images. However, existing equipment has some functional shortcomings in practical use, leaving room for improvement. For example, in the dual-roller design, uneven friction between the battery surface and the rollers during high-speed rotation, or an imbalance in the battery's internal center of gravity, can easily cause battery bounce, affecting the accuracy of the camera scan.

[0004] Therefore, there is an urgent need to develop a battery surface inspection device with the function of preventing battery jitter, so as to adapt to high-speed rotation scenarios. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems existing in the prior art and provide a device for high-speed detection of battery surface, which can prevent battery jumping under high-speed rotation.

[0006] To achieve the above objectives, this utility model provides a device for high-speed surface inspection of batteries, comprising: a testing platform and an anti-jump limiting mechanism disposed on the testing platform. The anti-jump limiting mechanism includes a rotatable pneumatic gripper, a movable clamp, a fixed slide rail, and a slider. The rotatable pneumatic gripper and the fixed slide rail are respectively fixedly disposed on the testing platform. The rotatable pneumatic gripper is driven by a servo motor to rotate, and is used to clamp one end of the battery to drive the battery to rotate. The fixed slide rail is parallel to the rotation axis of the rotatable pneumatic gripper. The slider is slidably connected to the fixed slide rail and is driven by a cylinder to slide. The movable clamp is disposed on the slider corresponding to the rotatable pneumatic gripper, and moves towards or away from the rotatable pneumatic gripper under the action of the slider, and is used to cooperate with the rotatable pneumatic gripper to press against both ends of the battery.

[0007] Preferably, the device further includes a visual inspection mechanism mounted on the inspection table, comprising a lamp holder, a slide rail mounting plate, a servo slide rail, a slide table, a line scan camera, and a light source device. The lamp holder and the slide rail mounting plate are both vertically mounted on the inspection table. The servo slide rail is positioned on the slide rail mounting plate corresponding to the axis of the rotatable pneumatic gripper. The slide table is mounted on the servo slide rail and is driven by a servo motor to reciprocate vertically. The line scan camera is located above the rotatable pneumatic gripper on the slide table and is used to scan and identify the battery surface. The lamp holder is located on one side of the axis of the rotatable pneumatic gripper, and the light source device is mounted on the lamp holder to provide a light source for the line scan camera.

[0008] Preferably, the device further includes a vision inspection mechanism mounted on the inspection table, comprising a camera mount, a fixing clamp, a 3D camera mounting bracket, and a 3D camera. The camera mount is located on one side of the axis of the rotatable pneumatic gripper; the fixing clamp is fixedly mounted on the camera mount for clamping and fixing the 3D camera mounting bracket; the 3D camera is located above the rotatable pneumatic gripper and mounted on the 3D camera mounting bracket for identifying the battery surface.

[0009] Preferably, the testing platform is provided with a groove, and fixing plates are provided at intervals at both ends of the groove. The fixing plates at both ends are located below the rotatable pneumatic gripper and the fixed slide rail, respectively, for installing and fixing the rotatable pneumatic gripper and the fixed slide rail.

[0010] Preferably, the rotatable pneumatic gripper is composed of multiple grippers, and the contact surfaces of the multiple grippers with the battery are provided with anti-slip blocks to enhance friction; the slider is provided with a bearing inside, one end of the movable clamp is rotatably connected to the slider through the bearing, and the other end is provided with an anti-slip block to enhance friction.

[0011] Preferably, the device further includes an automatic control mechanism, including a PLC controller and through-beam sensors. The PLC controller is electrically connected to the servo motor and cylinder of the device. The through-beam sensors are signal-connected to the PLC controller and are located on both sides of the battery clamping area. They are used to detect when the battery enters the clamping area and sends a signal to the PLC controller, which then controls the servo motor and cylinder to automatically perform high-speed detection of the battery surface.

[0012] Preferably, the automatic control mechanism further includes a vibration sensor, which is mounted on the rotatable pneumatic gripper and connected to the PLC controller via a signal. The sensor detects abnormal fluctuations in the battery during rotation and feeds the data back to the PLC controller, which then automatically controls the servo motor and cylinder to pause and issues an alarm.

[0013] Preferably, the PLC controller is electrically connected to the vision inspection mechanism and is used to control the vision inspection mechanism to activate its inspection function.

[0014] The above technical solution involves securing the cylindrical battery in a rotatable pneumatic gripper. Then, a cylinder is activated, pushing a slider along a fixed rail to press a movable clamp against the battery's tail end. A servo motor drives the rotatable pneumatic gripper to rotate at high speed, causing the battery to rotate synchronously. This clamping and rotation method, using a rotatable pneumatic gripper and a movable clamp to hold the battery firmly at both ends, prevents the battery from jumping during rotation, thus achieving the function of preventing battery jump. Therefore, the anti-jump limiting mechanism achieves stable clamping under high-speed rotation through the double-end clamping structure of the rotatable pneumatic gripper and the movable clamp. Attached Figure Description

[0015] Figure 1 A schematic diagram of the three-dimensional structure of the device for high-speed detection of battery surfaces according to this utility model, with a 3D camera installed. Figure 2 This is a top view of the device of this utility model; Figure 3 This is a three-dimensional structural diagram of the device for high-speed detection of battery surfaces according to this utility model, showing the installation of a line scan camera. Figure 4 This is a side view of the device for high-speed detection of battery surfaces according to this utility model, showing the installation of a line scan camera. Figure 5 This is a schematic diagram of the automatic control mechanism of the device for high-speed detection of battery surfaces according to this utility model.

[0016] In the diagram: 1. Testing table; 2. Pre-drilled screw holes; 3. First fixing plate; 4. First servo motor; 5. Rotatable pneumatic gripper; 6. Second fixing plate; 7. Cylinder; 8. Fixed slide rail; 9. Slider; 10. Movable fixture; 11. Camera mount; 12. Fixed fixture; 13. 3D camera mount; 14. 3D camera; 15. Slide rail fixing plate; 16. First reinforcement seat; 17. Second reinforcement seat; 19. Servo slide rail; 20. Second servo motor; 21. Slide table; 22. Line scan camera mount; 23. Line scan camera; 24. Lamp mount; 25. Light source equipment; 26. Through-beam sensor bracket; 27. Through-beam sensor; 28. Vibration sensor. Detailed Implementation

[0017] In this utility model, unless otherwise explicitly specified and limited, "above" or "below," "left" or "right" of the first feature and the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" of the first feature and the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the first feature and the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Example

[0019] A device for high-speed inspection of battery surfaces. Figure 1 As shown, the device includes: a testing platform 1 and an anti-jumping limiting mechanism disposed on the testing platform 1. The anti-jumping limiting mechanism includes a rotatable pneumatic gripper 5, a movable clamp 10, a fixed slide rail 8, and a slider 9. The rotatable pneumatic gripper 5 and the fixed slide rail 8 are respectively fixedly disposed on the testing platform 1. The rotatable pneumatic gripper 5 is driven by a servo motor to rotate and is used to clamp one end of the battery to drive the battery to rotate. The fixed slide rail 8 is parallel to the rotation axis of the rotatable pneumatic gripper 5. The slider 9 is slidably connected to the fixed slide rail 8 and is driven by a cylinder to slide. The movable clamp 10 is disposed on the slider 9 corresponding to the rotatable pneumatic gripper 5 and moves towards or away from the rotatable pneumatic gripper 5 under the action of the slider 8 to cooperate with the rotatable pneumatic gripper 5 to clamp the two ends of the battery.

[0020] Furthermore, the testing platform 1 is provided with a groove, and fixing plates are spaced apart at both ends of the groove. The fixing plates at both ends are located below the rotatable pneumatic gripper 5 and the fixed slide rail 8, respectively, for installing and fixing the rotatable pneumatic gripper 5 and the fixed slide rail 8. The fixing plates can effectively reduce the installation difficulty of the anti-jumping limiting mechanism and reduce costs. The rotatable pneumatic gripper 5 is composed of multiple grippers, and the contact surface between the multiple grippers and the battery is provided with anti-slip blocks to enhance friction. The slider 9 is provided with a bearing inside, and one end of the movable clamp 10 is rotatably connected to the slider 9 through the bearing, and the other end is provided with an anti-slip block to enhance friction, preferably a polyurethane anti-slip block, to enhance friction with the battery and improve rotational stability.

[0021] For example, such as Figure 2As shown, the groove is located at the central axis of the testing platform 1 and extends through both the front and rear sides of the testing platform 1. A first fixing plate 3 and a second fixing plate 6 are spaced apart at both ends of the groove. The surfaces of the first fixing plate 3 and the second fixing plate 6 are flush with the surface of the testing platform 1 and are located on the same horizontal plane. A first servo motor 4 is located at the middle position of the first fixing plate 3. The output end of the first servo motor 4 is movably connected to a rotatable pneumatic gripper 5, used to drive the rotatable pneumatic gripper 5 to rotate. A fixed slide rail 8 is fixedly connected to the second fixing plate 6. The fixed slide rail 8 includes two tracks, symmetrically arranged on both sides of the central axis of the testing platform 1. A slider 9 is movably connected to the fixed slide rail 8. A cylinder 7 is installed at the middle position of the second fixing plate 6. The output end of the cylinder 7 is connected to the slider 9, used to drive the slider 9 to slide along the fixed slide rail 8. The horizontal center lines of the rotatable pneumatic gripper 5 and the movable clamp 10 coincide, enabling them to clamp the battery and prevent it from jumping.

[0022] The mechanism comprises a first fixed plate, a first servo motor, a rotatable pneumatic gripper, a second fixed plate, a cylinder, a fixed slide rail, a slider, and a movable clamp. In use, after installing a 3D camera or line scan camera as needed, the cylindrical battery is clamped in the rotatable pneumatic gripper. Then, the cylinder is activated, pushing the slider along the fixed slide rail to press the movable clamp against the battery's tail end. The first servo motor drives the rotatable pneumatic gripper to rotate at high speed, causing the battery to rotate synchronously. The rotatable pneumatic gripper and the movable clamp firmly hold both ends of the battery together, preventing it from jumping during rotation and thus achieving the function of preventing battery jump. Therefore, the anti-jump limiting mechanism achieves stable clamping under high-speed rotation through the double-end clamping structure of the rotatable pneumatic gripper and the movable clamp.

[0023] Furthermore, the equipment for high-speed inspection of battery surfaces also includes a first type of visual inspection mechanism, such as... Figure 1As shown, the device installed on the testing platform 1 includes a lamp holder 24, a slide rail mounting plate 15, a servo slide rail 19, a slide table 21, a line scan camera 23, and a light source device 25. The lamp holder 24 and slide rail mounting plate 15 are both vertically mounted on the testing platform 1. The servo slide rail 19 is positioned on the slide rail mounting plate 15 corresponding to the axis of the rotatable pneumatic gripper 5. The slide table 21 is mounted on the servo slide rail 19 and is driven by a servo motor to reciprocate vertically. The line scan camera 23 is located above the rotatable pneumatic gripper 5 on the slide table 21 and is used to scan and identify the battery surface. The lamp holder 24 is located on one side of the axis of the rotatable pneumatic gripper 5, and the light source device 25 is mounted on the lamp holder 24 to provide a light source for the line scan camera 23. The bottom of the line scan camera 23 is higher than the light source device 25 for easy installation. Preferably, the bottom of the slide rail fixing plate 15 is designed with an inverted U-shaped structure, with both sides of the inverted U-shaped structure located on both sides of the rotatable pneumatic gripper 5, so that the rotatable pneumatic gripper 5 is located in the gap at the lower end of the slide rail fixing plate 15; for example, the slide rail fixing plate 15 is provided with a second reinforcing seat 17 on both the front and rear sides and a first reinforcing seat 16 on both the left and right sides for reinforcing the slide rail fixing plate 15; a second servo motor 20 is installed at the top of the servo slide rail 19 for driving the slide table 21 to reciprocate along the servo slide rail 19, and a line scan camera mounting bracket 22 is fixedly connected to the front end of the slide table 21, with the line scan camera 23 passing through the middle of the line scan camera mounting bracket 22. The testing table 1 is provided with multiple sets of reserved screw holes 2, and the lamp mounting bracket 24 is detachably installed with the testing table 1 by screws engaging the reserved screw holes 2.

[0024] like Figure 3 and Figure 4 As shown, the line scan camera 23 is fixed on the line scan camera mounting bracket 22, and the line scan camera mounting bracket 22 is fixed on the slide table 21. The second servo motor 20 drives the internal screw of the servo slide rail 19 to rotate, and the slide table 21 moves up and down along the servo slide rail 19 to adjust the actual height of the line scan camera 23.

[0025] In another embodiment of this utility model, the device for high-speed detection of battery surface further includes a second visual inspection mechanism, such as... Figure 1 As shown, the device mounted on the testing platform 1 includes a camera mount 11, a fixing clamp 12, a 3D camera mounting bracket 13, and a 3D camera 14. The camera mount 11 is located on one side of the axis of the rotatable pneumatic gripper 5. The fixing clamp 12 is fixedly mounted on the camera mount 11 and is used to clamp and fix the 3D camera mounting bracket 11. The 3D camera 14 is located above the rotatable pneumatic gripper 5 and mounted on the 3D camera mounting bracket 11, and is used to identify the battery surface. The camera mount 11 is also detachably mounted to the testing platform 1 by screws and pre-drilled screw holes 2.

[0026] The working principle of this utility model for high-speed surface inspection of batteries is as follows: First, install either a 3D camera 14 or a line scan camera 23 as needed. If the 3D camera 14 is required for inspection, fix the camera mounting base 11 on the inspection table 1. The 3D camera 14 is first fixed on the 3D camera mounting bracket 13, and then the 3D camera mounting bracket 13 is snapped into the fixing clamp 12, thus fixing the 3D camera 14. Alternatively, if the line scan camera 23 is required for inspection, fix the line scan camera 23 on the line scan camera mounting bracket 22, which is fixed on the slide table 21. The second servo motor 20 drives the internal screw of the servo slide rail 19 to rotate, and the slide table 21 moves up and down along the servo slide rail 19 to adjust the actual height of the line scan camera 23. The lamp mounting bracket 24 is used to fix the light source 25. The cylindrical battery is secured in the rotatable pneumatic gripper 5. Once the battery is in position, the cylinder 7 is activated, pushing the slider 9 to move along the fixed slide rail 8, thus pressing the movable clamp 10 against the battery's tail end. The first servo motor 4 drives the rotatable pneumatic gripper 5 to rotate at high speed, causing the battery to rotate synchronously. The rotatable pneumatic gripper 5 and the movable clamp 10 firmly hold both ends of the battery together, preventing it from jumping during rotation.

[0027] The system includes a camera mount, a fixture, a 3D camera mount, and a 3D camera. When a 3D camera is needed for testing, the camera mount is fixed to the testing table, the 3D camera is first fixed to the 3D camera mount, and then the 3D camera mount is secured to the fixture, thus fixing the 3D camera in place. This facilitates easy installation of the 3D camera. The system also includes a servo slide rail, a second servo motor, a slide table, a line scan camera mount, a line scan camera, a lamp mount, and a light source. When a line scan camera is needed for testing, it is fixed to the line scan camera mount, which is then fixed to the slide table. The second servo motor drives the internal screw of the servo slide rail, causing the slide table to move up and down along the servo slide rail to adjust the actual height of the line scan camera. The lamp mount is used to fix the light source, facilitating easy installation of the line scan camera.

[0028] Therefore, considering the versatility of functions and the ease of installation and use, this utility model provides a device for high-speed detection of battery surfaces. It features two visual inspection mechanisms and can be detachably installed with a pre-reserved screw hole 2. It supports quick switching between a 3D camera 14 and a line scan camera 23, achieving a modular camera installation design. Example

[0029] A device for high-speed detection of battery surfaces, based on the structure in Embodiment 1, further includes an automatic control mechanism, such as... Figure 5As shown, the device includes a PLC controller, a through-beam sensor 27, and a vibration sensor 28. The PLC controller is electrically connected to the servo motor and cylinder of the device. The through-beam sensor 27 is signal-connected to the PLC controller and is mounted on both sides of the battery clamping area via a through-beam sensor bracket 26. The through-beam sensor bracket 26 is mounted on the detection table 1 through a pre-drilled screw hole 2. It is used to detect when the battery enters the clamping area and sends a signal to the PLC controller, which then controls the servo motor and cylinder to automatically perform high-speed detection of the battery surface. The vibration sensor 28 is mounted on the rotatable pneumatic gripper 5 and is signal-connected to the PLC controller. It is used to detect abnormal jumping of the battery during rotation and then feed back to the PLC controller, which automatically controls the servo motor and cylinder to pause and issues an alarm. The PLC controller is electrically connected to the vision inspection mechanism and is used to control the vision inspection mechanism to activate its detection function.

[0030] For example, the PLC controller is electrically connected to the first servo motor 4, the second servo motor 20, the cylinder 7, and the line scan camera 23 (or 3D camera 14), and is signal-connected to the through-beam sensor 27 and the vibration sensor 28. The working principle is as follows: The cylindrical battery is clamped in the rotatable pneumatic gripper 5. After the through-beam sensor 26 detects that the battery is in place, it sends a signal to the PLC controller. The PLC controller controls the cylinder 7 to start, pushing the slider 9 to move to the set position, and pressing the movable clamp 10 against the tail end of the battery. The rotatable pneumatic gripper 5 and the movable clamp 10 press the two ends of the battery together. Then, the PLC controller sends a command to start the first servo motor 4 and the vibration sensor 28. The first servo motor 4 drives the rotatable pneumatic gripper 5 to rotate, so that the battery is not easy to jump during the rotation. At the same time, the second servo motor 20 is started to drive the line scan camera 23 to the designated position and controls the line scan camera 23 to start the scanning and recognition function (or controls the 3D camera 14 to start the scanning and recognition function). During the rotation scanning process, the vibration sensor 28 monitors the amount of jumping in real time. If it exceeds the threshold, it feeds back to the PLC controller, which controls the first servo motor 4 to automatically stop and start the alarm to ensure the safety and stability of the detection process.

[0031] Based on the coordinated control of the through-beam sensor 27, vibration sensor 28, and PLC controller, the device achieves fully automated functions for clamping, rotation, and anomaly detection. Testing showed that the vibration sensor reported no more than 4 errors per hour at a rotation speed of 1000 rpm.

[0032] In summary, the present invention has the following advantages: (1) The anti-jumping limiting mechanism achieves stable clamping under high-speed rotation through the double-end clamping structure of the rotatable pneumatic gripper and the movable clamp; (2) Considering the diversity of functions and the convenience of installation and use, the device for high-speed detection of battery surface of the present invention has two vision detection mechanisms and can be detached and installed with the reserved screw eye 2, supporting the quick switching of 3D camera 14 and line scan camera 23, and realizing the modular camera installation design; (3) Based on the linkage control of the through-beam sensor, vibration sensor and PLC controller, the fully automated functions of clamping, rotation and abnormal detection are realized.

[0033] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0034] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A device for high-speed inspection of battery surfaces, characterized in that, include: The test platform (1) and the anti-jumping limiting mechanism provided on the test platform (1) include a rotatable pneumatic gripper (5), a movable clamp (10), a fixed slide rail (8) and a slider (9). The rotatable pneumatic gripper (5) and the fixed slide rail (8) are respectively fixed on the test platform (1). The rotatable pneumatic gripper (5) is driven by a servo motor to rotate and is used to clamp one end of the battery to drive the battery to rotate. The fixed slide rail (8) is parallel to the rotation axis of the rotatable pneumatic gripper (5). The slider (9) is slidably connected to the fixed slide rail (8) and is driven by a cylinder to slide. The movable clamp (10) is provided on the slider (9) corresponding to the rotatable pneumatic gripper (5) and moves towards or away from the rotatable pneumatic gripper (5) under the drive of the slider (9) to cooperate with the rotatable pneumatic gripper (5) to press against both ends of the battery.

2. The device according to claim 1, characterized in that, The device also includes a visual inspection mechanism, which is installed on the inspection table (1). It includes a lamp holder (24), a slide rail fixing plate (15), a servo slide rail (19), a slide table (21), a line scan camera (23), and a light source device (25). The lamp holder (24) and the slide rail fixing plate (15) are both vertically installed on the inspection table (1). The servo slide rail (19) is located on the slide rail fixing plate (15) at the axis position corresponding to the rotatable pneumatic gripper (5). The slide table (21) is located on the servo slide rail (19) and is driven by the servo motor to reciprocate in the vertical direction. The line scan camera (23) is located above the rotatable pneumatic gripper (5) and is located on the slide table (21) for scanning and identifying the battery surface. The lamp holder (24) is located on one side of the axis of the rotatable pneumatic gripper (5), and the light source device (25) is installed on the lamp holder (24) for providing a light source for the line scan camera (23).

3. The device according to claim 1, characterized in that, The device also includes a visual inspection mechanism, which is installed on the inspection table (1) and includes a camera mount (11), a fixing clamp (12), a 3D camera mounting bracket (13) and a 3D camera (14). The camera mount (11) is located on one side of the axis of the rotatable pneumatic gripper (5). The fixing clamp (12) is fixed on the camera mount (11) and is used to clamp and fix the 3D camera mounting bracket (13). The 3D camera (14) is located above the rotatable pneumatic gripper (5) and is located on the 3D camera mounting bracket (13) for identifying the battery surface.

4. The device according to claim 1, characterized in that, The testing table (1) is provided with a groove, and fixed plates are provided at intervals at both ends of the groove. The fixed plates at both ends are located below the rotatable pneumatic gripper (5) and the fixed slide rail (8) respectively, and are used to install and fix the rotatable pneumatic gripper (5) and the fixed slide rail (8).

5. The device according to claim 1, characterized in that, The rotatable pneumatic gripper (5) is composed of multiple grippers, and the contact surfaces of the multiple grippers and the battery are provided with anti-slip blocks to enhance friction. The slider (9) is provided with a bearing inside, and one end of the movable clamp (10) is rotatably connected to the slider (9) through the bearing, and the other end is provided with an anti-slip block to enhance friction.

6. The device according to claim 2, characterized in that, The device also includes an automatic control mechanism, including a PLC controller and a through-beam sensor (27). The PLC controller is electrically connected to the servo motor and cylinder of the device. The through-beam sensor (27) is signal connected to the PLC controller and is located on both sides of the battery clamping area. It is used to detect when the battery enters the clamping area and sends a signal to the PLC controller, which then controls the servo motor and cylinder to automatically perform high-speed detection of the battery surface.

7. The device according to claim 6, characterized in that, The automatic control mechanism also includes a vibration sensor (28), which is mounted on the rotatable pneumatic gripper (5) and connected to the PLC controller. It is used to detect abnormal jumping of the battery during rotation and then feed back to the PLC controller, which automatically controls the servo motor and cylinder to stop and issues an alarm.

8. The device according to claim 7, characterized in that, The PLC controller is electrically connected to the vision inspection mechanism and is used to control the vision inspection mechanism to activate its inspection function.