Lithium battery pole piece welding quality detection equipment

Abstract

The utility model discloses lithium battery pole piece welding quality detection equipment, and relates to the technical field of lithium batteries. A first conveying belt is arranged at the bottom end of the support. A lithium battery body is arranged on the first conveying belt, and the lithium battery body is arranged below the support; a detector is fixedly connected to the inner side wall of the top end of the support and arranged above the lithium battery body. A first air cylinder is fixedly connected to the inner side wall of the support. The side end of the first air cylinder is fixedly connected with an impact ball block. The lithium battery body is conveyed to the position below the support through the first conveying belt to be detected, after the lithium battery body moves to the position below the support, the pole piece welding quality is detected through the detector, the impact ball block frequently impacts the lithium battery body through the first air cylinder to generate vibration, and the pole piece welding quality on the lithium battery body can be detected through the vibration effect. Therefore, the conditions of the lithium battery body in the use process are simulated, and the performance and the service life of the lithium battery body are ensured through different detection modes.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a lithium battery electrode welding quality testing device. Background Technology

[0002] Lithium-ion batteries, as electrochemical energy storage devices with high energy density, long cycle life, and environmental friendliness, have been widely used in consumer electronics, new energy vehicles, and energy storage systems. They achieve the storage and release of electrical energy through the reversible oxidation-reduction reaction of active materials on positive and negative electrodes. As the core component of lithium-ion batteries, the welding quality of the electrodes and electrode tabs directly affects the conductivity, safety, and lifespan of the battery. Therefore, effective testing of the welding quality of lithium-ion battery electrodes is crucial.

[0003] Current methods for inspecting the welding quality of lithium battery electrodes typically include manual visual inspection, X-ray inspection, and ultrasonic inspection. Manual visual inspection relies on operators using magnifying glasses and other tools to observe the appearance of the welded area and determine whether there are obvious defects such as incomplete welds, burn-through, or weld beads. X-ray inspection utilizes the penetrating power of X-rays to image the internal structure of the welded area, detecting the fusion of the weld joints and internal defects. Ultrasonic inspection emits ultrasonic waves and receives reflected signals to analyze the bonding state of the weld interface, thereby assessing the welding quality.

[0004] However, existing lithium battery electrode welding quality inspection only involves static appearance or internal structure inspection of the welded electrodes, which cannot simulate the dynamic operating conditions such as vibration faced by lithium batteries in actual use. In scenarios such as electric vehicle driving and energy storage equipment operation, lithium batteries will inevitably be subjected to mechanical stress such as vibration and impact. In this case, even if the welded appearance and internal structure inspection of the electrodes are qualified, vibration may cause problems such as loosening, poor contact or even falling off at the weld points, which will affect the performance and service life of the lithium battery. Utility Model Content

[0005] The purpose of this invention is to provide a lithium battery electrode welding quality inspection device to solve the technical problem that lithium batteries are inevitably subjected to mechanical stress such as vibration and impact in scenarios such as electric vehicle driving and energy storage equipment operation. In this case, even if the electrode has passed the inspection of welding appearance and internal structure, vibration may cause problems such as loosening, poor contact or even falling off at the weld point, which will affect the performance and service life of the lithium battery.

[0006] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0007] A lithium battery electrode welding quality inspection device includes a support frame; a first conveyor belt is provided at the bottom end of the support frame; a lithium battery body is provided on the first conveyor belt and is located below the support frame; a detector is fixedly connected to the inner side wall of the top end of the support frame and is located above the lithium battery body; a first cylinder is fixedly connected to the inner side wall of the support frame; an impact ball is fixedly connected to the side end of the first cylinder; and a positioning unit is provided inside the support frame.

[0008] As a further embodiment of this utility model: the positioning unit includes a second cylinder; the second cylinder is fixedly connected to the inner wall of the bracket; a positioning clamp is fixedly connected to the side end of the second cylinder; a rubber pad is provided on the side end of the positioning clamp, and the rubber pad is located on the side close to the lithium battery body.

[0009] As a further embodiment of this utility model: an electric slide rail is fixedly connected to the inner side wall of the top of the bracket; a first electric push rod is slidably connected to the bottom end of the electric slide rail; a soft brush is fixedly connected to the bottom end of the first electric push rod, and the soft brush is located on the side close to the lithium battery body.

[0010] As a further embodiment of this utility model: a second conveyor belt is fixedly connected to the side end of the first conveyor belt; a second electric push rod is fixedly connected to the top end of the first conveyor belt; and a pusher plate is fixedly connected to the side end of the second electric push rod.

[0011] As a further embodiment of this utility model: a support plate is fixedly connected to the inner wall of the first conveyor belt, and the support plate is located below the lithium battery body.

[0012] The beneficial effects of this utility model are as follows: The lithium battery body is transported to the support below the support by the No. 1 conveyor belt for testing. After the lithium battery body moves to the support, the electrode welding quality is tested by the detector. The impact ball is frequently struck by the No. 1 cylinder to generate vibration. The vibration effect will detect the electrode welding quality on the lithium battery body, thereby simulating the situation that will occur in the lithium battery body during use. Different testing methods are used to ensure the performance and service life of the lithium battery body. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the impact ball structure in this utility model;

[0016] In the diagram: 1. Support frame; 2. Conveyor belt No. 1; 3. Lithium battery body; 4. Detector; 5. Cylinder No. 1; 6. Impact ball; 7. Cylinder No. 2; 8. Positioning clamp; 9. Support plate; 10. Electric slide rail; 11. Electric push rod No. 1; 12. Soft brush; 13. Conveyor belt No. 2; 14. Push plate; 15. Electric push rod No. 2. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1-2 As shown, a lithium battery electrode welding quality inspection device includes a support 1; a first conveyor belt 2 is provided at the bottom end of the support 1; a lithium battery body 3 is provided on the first conveyor belt 2, and the lithium battery body 3 is located below the support 1; a detector 4 is fixedly connected to the inner side wall of the top end of the support 1, and the detector 4 is located above the lithium battery body 3; a first cylinder 5 is fixedly connected to the inner side wall of the support 1; an impact ball 6 is fixedly connected to the side end of the first cylinder 5; and a positioning unit is provided inside the support 1.

[0019] During operation, the staff places the lithium battery body 3 on the first conveyor belt 2, which transports the lithium battery body 3 to the area below the support 1 for testing. After the lithium battery body 3 moves to the area below the support 1, the electrode welding quality is tested by the detector 4. At this time, the first cylinder 5 causes the impact ball 6 to frequently impact the lithium battery body 3 to generate vibration. The vibration effect will detect the electrode welding quality on the lithium battery body 3, thereby simulating the situation that the lithium battery body 3 will experience during use. By using different testing methods, the performance and service life of the lithium battery body 3 can be guaranteed.

[0020] The positioning unit includes a second cylinder 7; the second cylinder 7 is fixedly connected to the inner wall of the bracket 1; a positioning clamp 8 is fixedly connected to the side end of the second cylinder 7; a rubber pad is provided on the side end of the positioning clamp 8, and the rubber pad is located on the side close to the lithium battery body 3.

[0021] Before the impact ball 6 impacts the lithium battery body 3, the positioning clamp 8 clamps and fixes the lithium battery body 3 through the second cylinder 7 to prevent the vibration of the impact ball 6 from causing the lithium battery body 3 to shift its position or fall off the first conveyor belt 2. The positioning clamp 8 can ensure the detection of the lithium battery body 3.

[0022] An electric slide rail 10 is fixedly connected to the inner side wall of the top of the bracket 1; a first electric push rod 11 is slidably connected to the bottom end of the electric slide rail 10; a soft brush 12 is fixedly connected to the bottom end of the first electric push rod 11, and the soft brush 12 is located on the side close to the lithium battery body 3.

[0023] After the impact ball 6 vibrates the lithium battery body 3, the first electric push rod 11 moves the soft brush 12 downward. The first electric push rod 11 and the soft brush 12 move and slide through the electric slide rail 10, so that the soft brush 12 slides and rubs on the top surface of the lithium battery body 3, and the soft brush 12 makes friction contact with the electrode at the top of the lithium battery body 3, thereby detecting the welding quality and firmness of the electrode of the lithium battery body 3.

[0024] A second conveyor belt 13 is fixedly connected to the side end of the first conveyor belt 2; a second electric push rod 15 is fixedly connected to the top end of the first conveyor belt 2; and a pusher plate 14 is fixedly connected to the side end of the second electric push rod 15.

[0025] When detector 4 detects a defective lithium battery 3 or after vibration monitoring of impact ball 6, the electrode on lithium battery 3 is damaged. The defective lithium battery 3 is moved to one side of pusher plate 14 by conveyor belt 2. The pusher plate 14 is moved by electric push rod 15 to push lithium battery 3 onto conveyor belt 13. The defective lithium battery 3 is then transported to a designated area by conveyor belt 13 for further processing by staff.

[0026] A support plate 9 is fixed to the inner wall of the first conveyor belt 2, and the support plate 9 is located below the lithium battery body 3.

[0027] The support plate 9 is located below the internal detector 4 of the first conveyor belt 2. When the lithium battery body 3 needs to be detected by the detector 4, it will be located above the support plate 9 below the detector 4. The support plate 9 can support the bottom of the lithium battery body 3 and prevent the vibration of the impact ball 6 from deforming the first conveyor belt 2.

[0028] The working principle of this utility model is as follows: During operation, the worker places the lithium battery body 3 on the first conveyor belt 2, which transports the lithium battery body 3 to below the support 1 for testing. After the lithium battery body 3 moves to below the support 1, it passes through the detector 4 to check the electrode welding quality. At this time, the first cylinder 5 causes the impact ball 6 to frequently impact the lithium battery body 3, generating vibration. The vibration effect detects the electrode welding quality on the lithium battery body 3, thus simulating the situation that the lithium battery body 3 will encounter during use. Different testing methods are used to ensure the performance and service life of the lithium battery body 3. Before the impact ball 6 impacts the lithium battery body 3, the second cylinder 7 causes the positioning clamp 8 to clamp and fix the lithium battery body 3, preventing the lithium battery body 3 from shifting position or falling off the first conveyor belt 2 due to the vibration of the impact ball 6. The positioning clamp 8 ensures the testing of the lithium battery body 3. The support plate 9 is located inside the first conveyor belt 2, below the detector 4. When the lithium battery body 3 needs to pass through the detector 4 for testing, its position will be adjusted accordingly. Located above the support plate 9 below the detector 4, the support plate 9 supports the bottom of the lithium battery body 3, preventing the vibration of the impact ball 6 from deforming the first conveyor belt 2. After the impact ball 6 detects the vibration of the lithium battery body 3, the first electric push rod 11 moves the soft brush 12 downward. The first electric push rod 11 and the soft brush 12 slide along the electric slide rail 10, causing the soft brush 12 to slide and rub against the top surface of the lithium battery body 3, allowing the soft brush 12 to make contact with the electrode at the top of the lithium battery body 3. Friction contact is performed to detect the welding quality and firmness of the electrode sheets of the lithium battery body 3. When the detector 4 detects a defective lithium battery body 3 or the electrode sheets on the lithium battery body 3 are damaged after vibration monitoring by the impact ball block 6, the defective lithium battery body 3 is moved to one side of the pusher plate 14 by the first conveyor belt 2. The pusher plate 14 is moved by the second electric push rod 15 to push the lithium battery body 3 onto the second conveyor belt 13. The defective lithium battery body 3 is then transported to the designated area by the second conveyor belt 13 for further processing by the staff.

[0029] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A lithium battery pole piece welding quality detection device, characterized in that, The system includes a support (1); a first conveyor belt (2) is provided at the bottom of the support (1); a lithium battery body (3) is provided on the first conveyor belt (2) and is located below the support (1); a detector (4) is fixedly connected to the inner wall of the top of the support (1) and is located above the lithium battery body (3); a first cylinder (5) is fixedly connected to the inner wall of the support (1); an impact ball (6) is fixedly connected to the side end of the first cylinder (5); and a positioning unit is provided inside the support (1).

2. The lithium battery pole piece welding quality detection equipment according to claim 1, characterized in that, The positioning unit includes a second cylinder (7); the second cylinder (7) is fixed to the inner wall of the bracket (1); a positioning clamp (8) is fixed to the side end of the second cylinder (7); a rubber pad is provided on the side end of the positioning clamp (8), and the rubber pad is located on the side close to the lithium battery body (3).

3. The lithium battery pole piece welding quality detection device according to claim 1, characterized in that, An electric slide rail (10) is fixedly connected to the inner side wall of the top of the bracket (1); a first electric push rod (11) is slidably connected to the bottom end of the electric slide rail (10); a soft brush (12) is fixedly connected to the bottom end of the first electric push rod (11), and the soft brush (12) is located on the side close to the lithium battery body (3).

4. The lithium battery pole piece welding quality detection device according to claim 1, characterized in that, A second conveyor belt (13) is fixedly connected to the side end of the first conveyor belt (2); a second electric push rod (15) is fixedly connected to the top end of the first conveyor belt (2); and a pusher plate (14) is fixedly connected to the side end of the second electric push rod (15).

5. The lithium battery pole piece welding quality detection device according to claim 1, characterized in that, A support plate (9) is fixed to the inner wall of the first conveyor belt (2), and the support plate (9) is located below the lithium battery body (3).

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