隔膜及其制备方法、电池单体和储能装置
By setting adhesive layers with different surface densities and pore recessed structures on both sides of the separator, the adhesion to the positive electrode sheet is enhanced, the problem of wrinkles in the inner layer of the square aluminum-cased battery core is solved, the risk of lithium plating and dendrite formation is reduced, and the safety and stability of the battery are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG JINKO ENERGY STORAGE CO LTD
- Filing Date
- 2026-03-31
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are unable to effectively reduce the wrinkling problem in the inner layer of square aluminum-cased battery cores, especially at corners, which leads to the formation of dendrites due to lithium plating, causing the risk of micro-short circuits or short circuits in the battery cell.
By setting adhesive layers with different surface densities on both sides of the diaphragm, the first adhesive layer has an inclined adhesion to the positive electrode sheet, and a first recess with pores is set on the side of the first adhesive layer away from the surface, which enhances the adhesion to the positive electrode sheet and forms a vacuum adsorption structure.
It improves the wrinkling phenomenon in the inner layer of the core after battery charging and discharging, reduces the risk of lithium plating and dendrite formation, and improves the safety and stability of the battery.
Smart Images
Figure CN121965056B_ABST