Electrode assembly and rechargeable lithium battery comprising the same
By using a polymer layer with low thermal conductivity and appropriate electrical conductivity in the electrode terminals, the problems of electrode deformation and electrolyte leakage during charging and discharging are solved, improving battery life and safety, and simplifying terminal design.
CN122158742APending Publication Date: 2026-06-05SAMSUNG SDI CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SAMSUNG SDI CO LTD
- Filing Date
- 2025-11-27
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
Existing rechargeable lithium batteries suffer from electrode deformation due to volume changes during charging and discharging, leading to cracks and electrolyte leakage, which affects lifespan and safety.
Method used
The electrode terminal design includes a first metal layer, a second metal layer, and a polymer layer placed between them. The polymer layer has low thermal conductivity and appropriate electrical conductivity, which disperses external pressure caused by volume changes and reduces heat transfer and electrolyte leakage.
Benefits of technology
It effectively reduces or prevents electrode deformation, improves battery life and safety, simplifies terminal block design, and improves internal space efficiency.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122158742A_ABST
Abstract
An electrode assembly and a rechargeable lithium battery are disclosed. The electrode assembly includes at least one unit cell including a positive electrode and a negative electrode and at least one electrode tab electrically connected to either of the positive electrode and the negative electrode. The electrode tab includes a first metal layer, a second metal layer, and a polymer layer disposed between the first metal layer and the second metal layer. The polymer layer includes a polymer having a thermal conductivity in a range of about 10 W / (m·K) or less.
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