Battery monomer, battery and electric device
CN223079207UActive Publication Date: 2025-07-08CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information
- Application Number
- CN202421824264.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-30
AI Technical Summary
Technical Problem
During the charging and discharging cycle, existing battery cells have an assembly gap between the end cap and the housing due to expansion and deformation of the electrode assembly during the charging and discharging cycle, which affects the sealing and service life.
Method used
By forming a partially thickened non-flat surface in the edge area of the shell, and adjusting the shape of the end cap and the welding position of the shell, the end cap is adapted to the shell, reducing assembly gaps, and improving welding effect and sealing.
Benefits of technology
It enhances the expansion resistance of the battery cell, improves the assembly stability and sealing effect of the end cover and the case, and extends the service life of the battery.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN223079207U_ABST
Abstract
The utility model provides a battery monomer, a battery and a power utilization device, the battery monomer comprises a shell, an electrode assembly and an end cover, the shell comprises a plurality of side walls, the plurality of side walls are enclosed to form a containing cavity with an opening, the side walls are provided with a central area and an edge area close to the opening, the inner surface of the side wall protrudes from one side, facing the accommodating cavity, of a part of the edge area and forms an uneven surface, the electrode assembly is arranged in the accommodating cavity, the end cover covers the opening and is electrically connected with the electrode assembly, and the end cover is at least partially embedded into the accommodating cavity from the opening and is connected with the shell through a welding part; the welding part at least partially extends to the embedded part from the outer surface of the end cover, and the embedded part is matched with the non-flat surface, so that the expansion resistance of the battery can be improved, and the assembly stability of the end cover and the shell can be improved.
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