Battery composite current collector pole piece
By introducing microfluidic channels, longitudinal and transverse thermal conductive structures, and phase change material capsules into the battery electrodes, the heat dissipation problem of the battery electrodes during fast charging is solved, achieving efficient thermal management and temperature balance, which is suitable for high energy density batteries.
Patent Information
- Application Number
- CN202521336306.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-14
- Estimated Expiration
- 2035-06-27
AI Technical Summary
Existing battery electrodes suffer from unidirectional thermal dependence and uneven electrolyte wetting during fast charging, resulting in high local temperature rise rates and large temperature differences, which cannot meet the requirements of high energy density materials and fast charging technology.
The design employs a layered structure consisting of a base layer, a thermally conductive layer, and an active coating. The thermally conductive layer incorporates microfluidic channels and longitudinal and transverse thermal conductive structures, while the active coating is filled with phase change material capsules, forming a composite current collector electrode that synergistically dissipates heat, achieving dynamic heat buffering and active heat dissipation.
It achieves an electrode surface temperature rise rate of ≤3℃/s and a lateral temperature difference of ≤3℃, making it suitable for fast-charging power batteries, compatible with existing battery processes, and without increasing costs.