Verbundseparator und Herstellungsverfahren dafür sowie Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4822870

Anmeldetag

12. September 2024

Veröffentlichung

31. Juli 2025

Rechtsraum

EP

Abstract

A composite separator and a preparation method therefor, and a battery and an electric device. The composite separator comprises a base membrane, wherein the base membrane has a first surface and a second surface arranged opposite each other, a non-woven fabric layer being provided on the first surface of the base membrane, the non-woven fabric layer comprising non-woven fabric material formed by polymer fibers, and the porosity of the non-woven fabric layer being at least 40%. The composite separator is used in the battery, the non-woven fabric layer being adjacent to a negative electrode sheet of the battery. The composite separator is formed by compounding the base membrane and the non-woven fabric formed by the polymer fibers, and when the composite separator is used in the battery, the non-woven fabric layer is close to the side of the negative electrode sheet; thus, on the basis of the characteristics of the non-woven fabric layer of the composite separator, the cycle stability, cycle life and safety of the battery are improved.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China