圆柱锂电池防爆组合盖帽及其制备方法和圆柱锂电池
By designing a cylindrical lithium battery explosion-proof cap that integrates pressure relief and flame retardant functions, the problems of complex explosion-proof structures and lack of flame retardant functions in existing technologies have been solved. This achieves early active pressure relief and flame retardancy, improving battery safety and reliability while reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HONGLI NEW ENERGY (CHENGDU) CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing cylindrical lithium battery caps have problems such as complex explosion-proof structure, lack of flame-retardant function, and insufficient reliability under abnormal conditions such as overcharging, short circuit or thermal runaway. In addition, traditional designs are prone to secondary deflagration of flammable gases, posing safety hazards.
Design a cylindrical lithium battery explosion-proof combination cap, including sealing components, metal components, top cover, adhesive components, metal pressure plate and flame retardant components. By simplifying the component structure and optimizing the exhaust channel, early active pressure relief and flame retardancy are achieved. The composite material of red phosphorus flame retardant, aluminum hydroxide and silicone rubber absorbs heat and provides insulation in the gas reaction to avoid secondary deflagration.
It significantly improves the safety of cylindrical lithium batteries, reduces the probability of fire and explosion, simplifies the production process, reduces costs, and extends battery life.
Smart Images
Figure CN120879090B_ABST