Batteriezelle, Batterie, Elektrische Vorrichtung und Energiespeichervorrichtung

Details

Veröffentlichungs-Nr.

EP4819351

Anmeldetag

18. September 2024

Veröffentlichung

11. September 2025

Rechtsraum

EP

Abstract

A battery cell, a battery, an electrical apparatus, and an energy storage apparatus. The battery cell comprises: an electrode assembly, which comprises at least two layers of stacked electrode sheets; a casing, an accommodating space being formed in the interior of the casing, the electrode assembly being located in the accommodating space, the casing comprising a first side wall and a second side wall, the first side wall being located on one side of the electrode assembly in the layer thickness direction, the plane on which the first side wall is located intersecting the plane on which the second side wall is located, and the first side wall being connected to the second side wall by means of a transition portion; and an elastic pad, which is located between the electrode assembly and the first side wall. The elastic pad is arranged between the electrode assembly and the first side wall, the electrode assembly can avoid the transition portion during expansion of the electrode assembly, and the elastic pad can also absorb a compressive force during the expansion of the electrode assembly. As a result, the risk of active material detachment caused by mutual compression and abrasion between the electrode assembly and the transition portion of the casing is more effectively reduced, thereby mitigating the phenomenon of lithium plating and prolonging the service life of a battery.

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China