一种圆柱电池点底焊后的拉力测试装置
By using a tensile testing device that combines support components, drive components, and follow-up components, the problem of damaged solder joints and battery surfaces in existing technologies has been solved. This enables non-destructive testing of the tensile strength of negative current collector solder joints, ensuring testing accuracy and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING CBAK NEW ENERGY TECH CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for testing the bottom welding pull force of cylindrical batteries can easily damage the solder joints or the battery surface, leading to irreversible damage and scratches.
The tensile testing device employs a combination of support components, drive components, and follow-up components. It uses a servo motor to drive the battery to rotate and sensors to detect the displacement of the solder joints, thus avoiding direct pulling or friction damage and achieving detection without external force.
It enables non-destructive testing of the tensile strength of the negative current collector solder joints, avoiding damage to the positive current collector solder joints and the battery surface, and ensuring testing accuracy and safety.
Smart Images
Figure CN224518490U_ABST
Abstract
Claims
1. A pull test device for post-welded spot-welded cylindrical batteries, comprising a support assembly (1), said support assembly (1) comprising: The support column (12) and the L-shaped back plate (13), wherein the L-shaped back plate (13) is fixedly installed on the front side of the support column (12), characterized in that the tensile testing device further includes The drive assembly (2) and the follower assembly (3) are both installed on the front side of the L-shaped back plate (13), and the drive assembly (2) and the follower assembly (3) cooperate with each other; Battery (5), which cooperates with follower assembly (3) and drive assembly (2); The detection component (4) includes: a sensor (41) and a retaining edge (42). The sensor (41) and the flange (42) are both fixedly installed at the bottom of the L-shaped back plate (13).
2. The pull test device for a cylindrical battery spot-welded after the bottom welding according to claim 1, wherein The drive assembly (2) includes: a servo motor (21), a coupling (22), a drive wheel (24), a drive support plate (25), and a guide rail slider assembly (26). The guide rail slider assembly (26) is fixedly installed on the front side of the L-shaped back plate (13), the drive support plate (25) is fixedly installed on the front side of the guide rail slider assembly (26), the servo motor (21) is fixedly installed on the top of the drive support plate (25), the coupling (22) and the flange bearing (23) are both installed on the inner side of the drive support plate (25), the flange bearing (23) cooperates with the coupling (22), the drive wheel (24) cooperates with the coupling (22), and the drive wheel (24) slides in contact with the battery (5).
3. The pull test device for a cylindrical battery spot-welded after the bottom welding according to claim 1, wherein The follower component (3) includes: a follower plate (31) and a plurality of follower wheels (32); The follower plate (31) is fixedly connected to the L-shaped back plate (13), and the follower wheel (32) is rotatably connected to the follower plate (31).
4. The pull test device for a cylindrical battery spot-welded after the bottom according to claim 2, characterized in that, A flange bearing (23) is installed on the inner side of the drive support plate (25), and the flange bearing (23) cooperates with the coupling (22).
5. The pull test device for a cylindrical battery spot-welded after the bottom according to claim 2, characterized in that, The drive support plate (25) has circular through holes on its right top and bottom sides, and the output shaft of the servo motor (21) and the coupling (22) are both fitted with the circular through holes.
6. The pull test device for a cylindrical battery spot-welded after the bottom welding according to claim 1, wherein The bottom of the support column (12) is fixedly installed with a support base (11).