Isolating membrane, battery monomer, battery and electric device

CN119768963APending Publication Date: 2025-04-04CONTEMPORARY AMPEREX TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202380060934.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-04-17
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

The cycle performance and storage performance of existing battery cells are poor and need to be improved.

Method used

An isolation film is used, which includes a polymer layer. The polymer layer contains a liquid-absorbent polymer. The polymer layer is in contact with the electrolyte. The electrolyte can diffuse between molecular chains. The introduction of the liquid-absorbent polymer accelerates the dissolution of the electrolyte. Absorption and transmission, reducing the lack of liquid during the cycle charge and discharge process, and improving the cycle performance of the battery cells.

Benefits of technology

By increasing the resorption rate and transmission rate of the electrolyte, the battery polarization is reduced, the cycle life of the battery cell is extended, and the overall performance of the battery is improved.

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Abstract

The invention provides an isolating membrane, a battery monomer, a battery and a power utilization device, the isolating membrane comprises an isolating body and a polymer layer arranged on at least one surface of the isolating body, the isolating membrane satisfies: v / lambda > 5.00, lambda represents the porosity of the isolating membrane, and v / lambda represents the porosity of the isolating membrane; v represents the liquid absorption rate of the isolating membrane, and the unit is mg / s.
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