Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4723347

Anmeldetag

29. Dezember 2023

Veröffentlichung

3. Juli 2025

Rechtsraum

EP

IPC

H01M50/342, H01M50/249

Abstract

The present application provides a battery cell, a battery, and an electrical device. The battery cell includes a shell and a pressure relief component. The shell has a wall portion, and the pressure relief component is arranged on the wall portion. The pressure relief component includes a first weak portion and a second weak portion, the first weak portion defines a predetermined pressure relief region, the pressure relief component is configured to be capable of cracking along at least a part of the first weak portion during pressure relief of the battery cell, and the second weak portion is configured to guide at least a part of the predetermined pressure relief region to flip over to open the at least a part of the predetermined pressure relief region. The first weak portion includes a first weak section, and the first weak section and the second weak portion are arranged at an interval in a first direction. In the first direction, a minimum distance between the first weak section and the second weak portion is L, and a cross-sectional area of the second weak portion perpendicular to its extension direction is S, meeting: 3.3 mm≤L≤48 mm, and 0.008 mm<2>≤S≤0.45 mm<2>. In this way, the battery cell is capable of achieving rapid pressure relief, and has a high reliability.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China