Cover plate of cylindrical power battery
By improving the structural design of the cylindrical power battery cover and using techniques such as welding and interference fit, the problem of insufficient sealing of traditional cover structures has been solved, thereby improving the safety and sealing performance of the battery.
CN224123422UActive Publication Date: 2026-04-14马鞍山盛世科技有限公司
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Patent Information
- Application Number
- CN202520813530.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-04-14
- Estimated Expiration
- 2035-04-27
AI Technical Summary
Technical Problem
Traditional cylindrical battery cover structures have leakage and short-circuit problems between the sealing ring and the lower plastic and current collector, resulting in insufficient battery safety.
Method used
A cover structure for a cylindrical power battery was designed, including terminals, current collectors, lower plastic, aluminum sheet, sealing ring, pressure plate, and upper plastic. A sealing structure is formed by welding and interference fit to ensure airtightness.
Benefits of technology
It improves the battery's sealing performance, enhances safety, and reduces the risk of leakage and short circuits.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a cover plate of a cylindrical power battery, which belongs to the field of power batteries and comprises a pole, a collector plate, lower plastic, a light aluminum sheet, a sealing ring, a pressing plate and upper plastic. The collector plate is arranged on the pole, and the lower plastic is assembled on the pole; the sealing ring is arranged on the pole, and the pole is provided with a light aluminum sheet; upper plastic cement is arranged on the pole; pressing plates are arranged at the top ends of the poles; the upper plastic is arranged between the pressing plate and the light aluminum sheet; the lower plastic is arranged on the periphery of the sealing ring; and the light aluminum sheet is arranged above the lower plastic and the sealing ring. According to the utility model, sealing is directly formed among the sealing gasket, the light aluminum and the pole, so that the sealing performance of a product is greatly improved, and the safety performance of the product is improved.
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