Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4826860

Anmeldetag

12. April 2024

Veröffentlichung

16. Oktober 2025

Rechtsraum

EP

IPC

H01M50/147, H01M50/166

Abstract

The embodiments of the present application provide a battery cell, a battery, and an electrical apparatus. The battery cell comprises a housing, a top cover, and an electrode assembly. The housing is provided with an accommodating space and an opening. The top cover seals and covers the opening. The electrode assembly is arranged within the accommodating space. The top cover comprises a cover body, a connecting side wall and a groove formed between the cover body and the connecting side wall, and an end portion of the housing extends into the groove and is connected with the top cover. When the electrode assembly expands cyclically and produces gas during charging and discharging, the housing deforms outwards when force is produced at the connection between the housing and the top cover, and the connecting side wall limits and supports the housing, so as to limit further outward deformation of the housing to a certain extent, thereby reducing the risk of fatigue cracking of the connecting structure between the housing and the top cover, improving the problem of failure of the connecting structure between the housing and the top cover, and increasing the service life.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China

Fachgebiete