Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4760965

Anmeldetag

2. Februar 2024

Veröffentlichung

7. August 2025

Rechtsraum

EP

Abstract

A battery cell (20), a battery (10), and an electric device, relating to the technical field of batteries. The battery cell (20) comprises: an electrode assembly (22) comprising a negative electrode sheet, the negative electrode sheet comprising a negative electrode active material which allows for reversible metal ion deintercalation/intercalation, and the negative electrode active material comprising a silicon element; a casing (21), an opening being formed in the casing (21), and the casing (21) being used for accommodating the electrode assembly (22); an end cover (23) covering the opening; and a current collector component (24) accommodated in the casing (21) and located on the side of the electrode assembly (22) facing the end cover (23), wherein the current connector component (24) is electrically connected to a tab of the electrode assembly (22) and the casing (21), the current connector component (24) comprises a current collector body (240) and an elastic portion (241), the current collector body (240) is of an annular structure, the elastic portion (241) is located on the inner side of the current collector body (240) and is connected to the current collector body (240), and at least part of the elastic portion (241) in the thickness direction of the end cover (23) protrudes out of the current collector body (240) and abuts against the end cover (23). The product is beneficial to taking into account of the energy density and reliability of the battery cell (20).

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China