Battery shell, single battery and battery pack
By adopting a flat top cover plate and a circumferentially outward-bent structure of the cell shell in lithium-ion power batteries, the high cost problem caused by the complex design of the top cover plate is solved, efficient production and stable sealing are achieved, and it is suitable for large-scale production.
CN223427714UActive Publication Date: 2025-10-10EVE ENERGY CO LTD
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Patent Information
- Application Number
- CN202422392048.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Technical Problem
Existing lithium-ion power battery top covers require complex curved or concave-convex shape designs, which leads to high production costs and is not conducive to large-scale production.
Method used
The flat top cover and the circumferentially expanded and bent structure of the cell casing simplify the mold and processing equipment, and quickly form the product through stamping, bending and other processes, thereby reducing production costs.
Benefits of technology
It improves production efficiency, reduces scrap rate and production cost, ensures sealing performance and structural stability, and is suitable for large-scale production.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to a battery shell, a single battery and a battery pack. The battery shell comprises a top side cover plate and a battery cell shell used for assembling a positive terminal, and the top side cover plate is welded to a top shell opening formed in the top of the battery cell shell; the top side cover plate is in a flat plate shape, the top shell opening of the battery cell shell is provided with a first step section which is formed by circumferentially expanding outwards and bending, and the top side cover plate abuts against and is welded with the first step section. According to the invention, different from the existing assembly structure of the shell and the top cover plate, the positive terminal is specifically assembled on the battery cell shell instead of the top side cover plate; meanwhile, the top side cover plate is of a flat-plate-shaped structure, it means that the manufacturing process of the top side cover plate is relatively simple, complex molds and machining equipment are not needed, in the production process, the forming speed of the top side cover plate is high, the quality is easy to control, the rejection rate in the production process can be reduced, and the production cost is reduced.
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