Batteriezelle, Batterievorrichtung und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4738552

Anmeldetag

30. August 2024

Veröffentlichung

30. Mai 2025

Rechtsraum

EP

IPC

H01M50/134

Abstract

A battery cell, a battery apparatus, and an electrical apparatus. The battery cell includes a housing (11), an electrode assembly (2) and an end cover (12), where at least one end of the housing (11) in a first direction is provided with an opening, and the housing (11) comprises a first side wall part (111). The electrode assembly (2) is at least partially accommodated in the housing (11). The electrode assembly (2) includes a positive pole piece (22) and a negative pole piece (23). At least part of the positive pole piece (22) and at least part of the negative pole piece (23) are stacked in a second direction. The second direction is parallel to the thickness direction of the first side wall part (111). The first direction intersects with the second direction. The end cover (12) is used for sealing the opening, and the first side wall part (111) and the end cover (12) are welded to form a first connecting part (51). The first side wall part (111) comprises, arranged in a first direction, a first area (1111) and a second area (1112). The first area (1111) is located between the first connecting part (51) and the second area (1112). The hardness of the first area (1111) is less than the hardness of the second area (1112). The expansion force of the electrode assembly (2) is released by means of the first area (1111) having a lower hardness, so as to reduce the possibility of cracking of the first connecting part (51) of the first side wall part (111).

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China