Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4769749

Anmeldetag

29. Dezember 2023

Veröffentlichung

3. Juli 2025

Rechtsraum

EP

IPC

H01M50/342

Abstract

The present application provides a battery cell, a battery and an electrical device, and relates to the technical field of batteries. The battery cell includes a shell and a pressure relief component; the shell includes a first wall portion; the pressure relief component is arranged on the first wall portion, a first weak portion of the pressure relief component defines at least one predetermined pressure relief region, and the pressure relief component is configured to be capable of rupturing along at least part of the first weak portion when the battery cell is subjected to pressure relief; in the width direction of the first wall portion, the size of the first wall portion is W, the first weak portion includes at least one first weak section, and the area of the cross section, perpendicular to an extension direction, of the first weak section is S<1>, 10mm≤W≤100mm, 0.006mm<2>≤S<1>≤0.15mm<2>. The risk of liquid leakage caused by the phenomenon that the pressure relief component is prematurely actuated or ruptures due to fatigue and the like after the battery cell is used for a long time can be reduced, the risks of bursting, explosion and the like of the shell of the battery cell caused by untimely pressure relief of the pressure relief component can be further reduced, and the operational reliability of the battery cell can be improved.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China

Fachgebiete