Lithium battery cover plate flaw detection equipment

Abstract

The utility model relates to lithium battery cover plate defect detection equipment which comprises a fixed frame plate, rotating wheels are installed at the four corners of the bottom of the fixed frame plate, a first motor is installed on the side face of the fixed frame plate, and one end of the first motor is connected with a first connecting rod. The end, away from the first motor, of the first connecting rod extends into the fixed frame plate, the end, located in the fixed frame plate, of the first connecting rod is fixedly provided with a rotating plate body, and the other end of the rotating plate body is fixedly provided with a second connecting rod. Therefore, different angles of the front side and the back side of the lithium battery cover plate can be detected, a transparent glass plate is not needed, visual detection and laser scanning detection can be respectively carried out on the surface of the lithium battery cover plate by utilizing the visual detection camera and the laser scanning probe, double lithium battery cover plate defect detection is realized, and the detection efficiency is improved. And the detection effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery cover plate flaw detection, in particular to a lithium battery cover plate flaw detection equipment. BACKGROUND

[0002] As known in the industry, a lithium battery is composed of a shell, a lithium battery core (composed of multiple positive and negative electrode sheets insulated by a diaphragm) arranged in a shell cavity of the shell, and a cover plate, i.e., a lithium battery cover plate. The lithium battery is highly valued in the industry and widely used in electric vehicles, electric bicycles, and various hardware tools, etc. due to its advantages of large capacity, light weight, long service life, high energy density, no memory effect, low self-discharge rate, and environmental friendliness. In order to ensure the quality of the lithium battery and its safety during use, the shell, the shell cover plate, and the lithium battery core are usually detected. Taking the lithium battery cover plate as an example, the upper and lower surfaces of the square lithium battery cover plate need to be visually detected and the good products are screened.

[0003] According to the public patent 202420382643.6, a lithium battery cover plate detection mechanism includes a first light source module, a second light source module, a lens module, a first height adjustment assembly for adjusting the longitudinal height position of the first light source module and the second light source module, respectively, and a second height adjustment assembly for adjusting the longitudinal height position of the lens module. By setting the first light source module, the second light source module, and the lens module, the bottom surface of the lithium battery cover plate is visually detected, and the top of the product is directly visually detected. Since the product is placed on a transparent glass plate, the bottom part of the lithium battery cover plate can be directly photographed without the need for complex multiple flips of the product, reducing the setting of the flipping mechanism and saving equipment space.

[0004] However, in use, the conventional lithium battery cover plate flaw detection equipment uses a transparent glass plate to place the lithium battery cover plate, and a visual camera detects the bottom of the lithium battery cover plate through the transparent glass plate. This detection method has the following problems: the surface of the transparent glass plate reflects light, which can easily affect the image quality captured by the camera. The reflection can cause the image to be blurred or produce a glare, thereby covering or interfering with the identification of defects. In addition, the glass plate can refract light, change the direction of light propagation, and cause image distortion, affecting accurate detection of defects. Therefore, a new technical solution is needed to solve this problem. UTILITY MODEL CONTENTS

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a lithium battery cover defect detection device. This addresses the problem of current traditional lithium battery cover defect detection devices that use a transparent glass plate to place the lithium battery cover and allow a vision camera to inspect the bottom of the cover through the transparent glass plate. In this method, the transparent glass plate reflects light, which easily affects the image quality captured by the camera. The reflection can cause image blurring or flare, thereby obscuring or interfering with defect identification. At the same time, the glass plate also refracts light, changing the direction of light propagation, leading to image distortion and affecting the accurate detection of defects.

[0006] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a lithium battery cover plate defect detection device is designed, including a fixed frame plate, with rotating wheels installed at the four corners of the bottom of the fixed frame plate, a first motor installed on the side of the fixed frame plate, a first connecting rod connected to one end of the first motor, the end of the first connecting rod away from the first motor extending into the fixed frame plate, a rotating plate fixed to one end of the first connecting rod inside the fixed frame plate, a second connecting rod fixed to the other end of the rotating plate, a bearing rotatably connected to the end of the second connecting rod away from the rotating plate, multiple placement holes opened on the surface of the rotating plate, clamping components arranged inside the multiple placement holes, a concave plate arranged outside the fixed frame plate, and a detection component arranged on the inner wall of the concave plate.

[0007] Preferably, the detection component includes a square slot, an illumination lamp body, a first visual detection camera, and a laser scanning probe.

[0008] Preferably, a plurality of first visual inspection cameras are embedded and fixed at the upper and lower ends of the inner wall of the concave plate, and a plurality of laser scanning probes are arranged between the plurality of first visual inspection cameras, with the plurality of laser scanning probes embedded and fixed at the upper and lower ends of the inner wall of the concave plate.

[0009] Preferably, the square groove is formed at the rear end of the concave plate, and a lighting lamp is installed inside the square groove.

[0010] Preferably, the front end of the fixed frame plate has a groove, a threaded rod is provided inside the groove, a movable block passes through the outside of the threaded rod, and the threaded hole in the movable block is threadedly connected to the threaded rod. A second motor is connected to one side of the threaded rod through the fixed frame plate, and the second motor is installed on the side of the fixed frame plate.

[0011] Preferably, the clamping assembly includes a circular groove, a first fixing cylinder, a second fixing cylinder, a spring, and a clamping plate.

[0012] Preferably, the circular groove is formed on both sides of the inner wall of the placement hole, a first fixing cylinder is installed inside the circular groove, a second fixing cylinder extends into the first fixing cylinder, a spring is fixed at one end of the second fixing cylinder inside the first fixing cylinder, a clamping plate is fixed at the end of the second fixing cylinder away from the first fixing cylinder, and a second visual inspection camera is embedded at both the front and rear ends of the placement hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, through the combination of a rotating plate, placement holes, and detection components, not only allows for the placement of multiple lithium battery cover plates within the multiple placement holes on the surface of the rotating plate, enabling simultaneous detection of multiple lithium battery cover plates, but also allows for the rotation of the lithium battery cover plates during the detection process, enabling detection of different angles on both sides of the lithium battery cover plates without the need for a transparent glass plate. Furthermore, by utilizing a visual inspection camera and a laser scanning probe, the surface of the lithium battery cover plates can be visually inspected and laser scanned separately, achieving dual detection of lithium battery cover plate defects and improving the detection effect. This solves the technical problem of current traditional lithium battery cover plate defect detection equipment, which uses a transparent glass plate to place the lithium battery cover plates and allows the visual camera to inspect the bottom of the lithium battery cover plates through the transparent glass plate. In this detection method, the transparent glass plate surface reflects light, which easily affects the image quality captured by the camera. The reflection can cause image blurring or flare, thereby obscuring or interfering with defect identification. At the same time, the glass plate also refracts light, changing the direction of light propagation, resulting in image distortion and affecting the accurate detection of defects.

[0015] 2. By combining a placement hole, a clamping assembly, and a second visual inspection camera, this utility model can not only clamp lithium battery cover plates of different sizes using the clamping assembly, but also, with multiple second visual inspection cameras arranged on the side of the placement hole, visual inspection of the side of the lithium battery cover plate can be performed using the multiple second visual inspection cameras after the lithium battery cover plate is clamped by the clamping assembly, further improving the inspection effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the detection component structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the clamping component and the second vision detection camera structure of this utility model.

[0019] In the diagram: 1. Fixed frame plate; 101. Rotating wheel; 2. First motor; 201. First connecting rod; 202. Placement hole; 203. Rotating plate; 204. Second connecting rod; 205. Bearing; 206. Groove; 207. Threaded rod; 208. Moving block; 209. Concave plate; 210. Second motor; 211. First vision inspection camera; 212. Laser scanning probe; 213. Square groove; 214. Illumination lamp body; 3. Circular groove; 301. First fixed cylinder; 302. Spring; 303. Second fixed cylinder; 304. Clamping plate; 305. Second vision inspection camera. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Example 1: A defect detection device for lithium battery cover plates, see [link / reference] Figures 1 to 3The system includes a fixed frame plate 1, with four rotating wheels 101 mounted at the bottom corners of the fixed frame plate 1. A first motor 2 is mounted on the side of the fixed frame plate 1. One end of the first motor 2 is connected to a first connecting rod 201. The end of the first connecting rod 201 away from the first motor 2 extends into the fixed frame plate 1. A rotating plate 203 is fixed to one end of the first connecting rod 201 inside the fixed frame plate 1. A second connecting rod 204 is fixed to the other end of the rotating plate 203. A bearing 205 is rotatably connected to the end of the second connecting rod 204 away from the rotating plate 203. The surface of the rotating plate 203 has multiple placement holes 202, and clamping components are installed inside the multiple placement holes 202. A concave plate 209 is provided on the outside of the fixed frame plate 1, and a detection component is provided on the inner wall of the concave plate 209. First, multiple lithium battery cover plates are placed into the placement slots on the surface of the rotating plate 203. After the lithium battery cover plates are placed, the second motor 210 is turned on. The second motor 210 drives the threaded rod 207, which in turn drives the moving block 208 to move. The moving block 208 drives the concave frame plate to move, and the concave frame plate drives multiple first vision detection cameras 211 and lasers at the upper and lower positions. The optical scanning probe 212 moves, and multiple first vision inspection cameras 211 and laser scanning probe 212 are used to detect the upper and lower positions of the lithium battery cover. The first vision inspection camera 211 converts the image of the lithium battery cover surface into an electrical signal through its lens and transmits it to the image processing terminal for defect identification. The laser scanning probe 212 emits a laser beam to scan the surface of the lithium battery cover, and the detection and processing terminal analyzes the changes in the reflected light signal to identify defects. During the defect detection process, the first motor 2 can drive the rotating plate 203 to rotate, thereby adjusting the angle of multiple lithium battery covers, which facilitates detection from different angles of the lithium battery cover. This solves the technical problem of current traditional lithium battery cover defect detection equipment, which uses a transparent glass plate to place the lithium battery cover and allows the vision camera to detect the bottom of the lithium battery cover through the transparent glass plate. In this detection method, the transparent glass plate surface reflects light, which easily affects the image quality captured by the camera. The reflection can cause the image to blur or produce flares, thereby obscuring or interfering with the identification of defects. At the same time, the glass plate also refracts light, changing the direction of light propagation, resulting in image distortion and affecting the accurate detection of defects.

[0022] For details, see Figure 2 The detection components include a square slot 213, an illumination lamp body 214, a first vision detection camera 211, and a laser scanning probe 212.

[0023] For more details, see Figure 2Multiple first vision inspection cameras 211 are embedded and fixed at the upper and lower ends of the inner wall of the concave plate 209. Multiple laser scanning probes 212 are arranged between the multiple first vision inspection cameras 211 and are embedded and fixed at the upper and lower ends of the inner wall of the concave plate 209.

[0024] Further, see Figure 2 A square groove 213 is formed at the rear end of the concave plate 209, and a lighting lamp body 214 is installed inside the square groove 213.

[0025] Further, see Figure 1 The front end of the fixed frame plate 1 has a groove 206, and a threaded rod 207 is provided inside the groove 206. A movable block 208 passes through the outside of the threaded rod 207, and the screw hole in the movable block 208 is threadedly connected to the threaded rod 207. A second motor 210 is connected to one side of the threaded rod 207 through the fixed frame plate 1. The second motor 210 is installed on the side of the fixed frame plate 1.

[0026] It is worth noting that, see Figure 1 and Figure 3 The clamping assembly includes a circular groove 3, a first fixed cylinder 301, a second fixed cylinder 303, a spring 302, and a clamping plate 304.

[0027] It is worth mentioning that, see Figure 1 and Figure 3 A circular groove 3 is formed on both sides of the inner wall of the placement hole 202. A first fixing cylinder 301 is installed inside the circular groove 3. A second fixing cylinder 303 extends into the first fixing cylinder 301. A spring 302 is fixed to one end of the second fixing cylinder 303 inside the first fixing cylinder 301, and a clamping plate 304 is fixed to the other end of the second fixing cylinder 303 away from the first fixing cylinder 301. A second visual inspection camera 305 is embedded at both the front and rear ends inside the placement hole 202. When the lithium battery cover is placed into the placement hole 202, a second visual inspection camera 305 is used. The elastic force of the spring 302 inside the first fixing cylinder 301 will drive the second fixing cylinder 303 and the clamping plate 304 to move. The clamping plate 304 is used to clamp lithium battery cover plates of different sizes. Moreover, multiple second vision inspection cameras 305 are provided on the side of the placement hole 202. After the lithium battery cover plate is clamped by the clamping assembly, the multiple second vision inspection cameras 305 can also use the lenses to convert the image of the side of the lithium battery cover plate into an electrical signal and transmit it to the image processing terminal to identify defects on the side.

[0028] When using a lithium battery cover defect detection device, multiple lithium battery covers are first placed into the placement slots on the surface of the rotating plate 203. After the lithium battery covers are placed, the second motor 210 is turned on. The second motor 210 drives the threaded rod 207, which in turn drives the moving block 208. The moving block 208 drives the concave frame plate, which in turn drives multiple first vision inspection cameras 211 and laser scanning probes 212 at their upper and lower positions. The upper and lower positions of the lithium battery covers are detected by the multiple first vision inspection cameras 211 and laser scanning probes 212. The first vision inspection cameras 211 convert the image of the lithium battery cover surface into an electrical signal through their lenses and transmit it to the image processing terminal for defect identification. The laser scanning probes 212 emit laser beams to scan the surface of the lithium battery cover and detect defects through the inspection process. The terminal analyzes changes in reflected light signals to identify defects. During defect detection, the first motor 2 drives the rotating plate 203 to rotate, thereby adjusting the angles of multiple lithium battery cover plates to facilitate detection from different angles. When the lithium battery cover plate is placed into the placement hole 202, the elastic force of the spring 302 inside the first fixing cylinder 301 drives the second fixing cylinder 303 and the clamping plate 304 to move. The clamping plate 304 clamps lithium battery cover plates of different sizes. Moreover, multiple second vision inspection cameras 305 are provided on the side of the placement hole 202. After the lithium battery cover plate is clamped by the clamping assembly, the multiple second vision inspection cameras 305 can convert the image of the side of the lithium battery cover plate into an electrical signal through the lens and transmit it to the image processing terminal to identify defects on the side.

[0029] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0030] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A lithium battery cover plate flaw detection device, comprising a fixed frame plate (1), the bottom corners of which are each provided with a rotating wheel (101), characterized in that, The side of the fixed frame plate (1) is provided with a first motor (2), the first motor (2) is installed on the side of the fixed frame plate (1), one end of the first motor (2) is connected with a first connecting rod (201), one end of the first connecting rod (201) away from the first motor (2) extends into the fixed frame plate (1), one end of the first connecting rod (201) in the fixed frame plate (1) is fixedly connected with a rotating plate body (203), the other end of the rotating plate body (203) is fixedly connected with a second connecting rod (204), one end of the second connecting rod (204) away from the rotating plate body (203) is rotatably connected with a bearing (205), a plurality of placing holes (202) are formed in the surface of the rotating plate body (203), a clamping assembly is arranged in the plurality of placing holes (202), and a concave plate body (209) is arranged outside the fixed frame plate (1).

2. The lithium battery cover panel defect inspection apparatus of claim 1, wherein, The detection assembly comprises a square groove (213), a lighting lamp body (214), a first visual detection camera (211) and a laser scanning probe (212).

3. The lithium battery cover panel defect inspection apparatus of claim 2, wherein, A plurality of first visual detection cameras (211) are embeddedly fixed on the upper and lower ends of the inner wall of the concave plate body (209), a plurality of laser scanning probes (212) are arranged between the plurality of first visual detection cameras (211), and the plurality of laser scanning probes (212) are embeddedly fixed on the upper and lower ends of the inner wall of the concave plate body (209).

4. The lithium battery cover panel defect inspection apparatus of claim 2, wherein, The square groove (213) is formed in the rear end of the concave plate body (209), and the lighting lamp body (214) is arranged in the square groove (213).

5. The lithium battery cover panel defect inspection apparatus of claim 1, wherein, A recess (206) is formed in the front end of the fixed frame plate (1), a threaded rod (207) is arranged in the recess (206), a moving block (208) penetrates through the threaded rod (207), the screw hole in the moving block (208) is in threaded connection with the threaded rod (207), and a second motor (210) is connected to the threaded rod (207) on one side and penetrates through the fixed frame plate (1).

6. The lithium battery cover panel defect inspection apparatus of claim 1, wherein, The clamping assembly comprises a circular groove (3), a first fixed cylinder (301), a second fixed cylinder (303), a spring (302) and a clamping plate body (304).

7. The lithium battery lid panel defect inspection apparatus of claim 6, wherein, The circular groove (3) is formed in the inner wall of the placing hole (202), the first fixed cylinder (301) is arranged in the circular groove (3), the second fixed cylinder (303) extends into the first fixed cylinder (301), one end of the second fixed cylinder (303) in the first fixed cylinder (301) is fixedly connected with the spring (302), one end of the second fixed cylinder (303) away from the first fixed cylinder (301) is fixedly connected with the clamping plate body (304), and the second visual detection camera (305) is embeddedly arranged in the front and rear ends of the placing hole (202).

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