Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4769748

Anmeldetag

29. Dezember 2023

Veröffentlichung

3. Juli 2025

Rechtsraum

EP

IPC

H01M50/342, H01M50/143

Abstract

Embodiments of the present application provide a battery cell, a battery, and an electrical device. The battery cell includes a shell and a pressure relief component, where the pressure relief component is arranged on a first wall portion of the shell. The pressure relief component is provided with a first groove and a second groove, the first groove defines at least one predetermined pressure relief region, the pressure relief component is configured to be able to split along at least a part of the first groove when the battery cell releases pressure, the pressure relief component has a first surface and a second surface opposite to each other, the second groove is arranged in the first surface, and the second groove is configured to guide at least a part of the predetermined pressure relief region to flip. The second groove includes a first groove side surface and a second groove side surface arranged opposite to each other, the first groove side surface is closer to the predetermined pressure relief region than the second groove side surface, and an angle formed between the first groove side surface and the first surface is less than an angle formed between the second groove side surface and the first surface. The risk of the predetermined pressure relief region being opened prematurely due to poor surface flatness can be reduced, thereby prolonging the service life of the battery cell.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China

Fachgebiete