一种电池极耳保护用极耳胶膜
By using a multi-layered tab film, the problem of tab short circuit in existing technologies is solved, improving the safety and stability of lithium batteries. Furthermore, electrolyte leakage is prevented through dielectric strength and elastic deformation of the rubber layer, thus extending the service life of lithium batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN ZHI XIN TIAN CHENG ELECTRONIC MATERIALS CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-17
AI Technical Summary
Existing protective films for the electrodes cannot effectively prevent short circuits between lithium battery electrodes, resulting in relatively poor safety and stability of lithium batteries.
It adopts a multi-layer structure consisting of a PP inner film layer, a PP insulation layer, a rubber layer, and a PP outer film layer. The melting points of the PP inner film layer and the PP outer film layer are lower than those of the PP insulation layer and the rubber layer. The dielectric strength is formed by hot pressing and bonding. Conductive fillers and silane coupling agents are combined to enhance the insulation and sealing performance.
It effectively prevents short circuits between the tabs, improves the safety and stability of lithium batteries, and absorbs volume changes during charging and discharging of the tabs through the elastic deformation of the rubber layer, preventing electrolyte leakage and extending the service life of lithium batteries.
Smart Images
Figure CN224510614U_ABST