Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4815176

Anmeldetag

2. Januar 2024

Veröffentlichung

10. Juli 2025

Rechtsraum

EP

IPC

H01M50/543

Abstract

A battery cell (20), a battery (100), and an electric device, relating to the technical field of batteries. The battery cell (20) comprises a casing (21), an electrode assembly (22), and an electrode terminal (23). The casing (21) has a wall portion (211), and a mounting hole (2111) is formed in the wall portion (211). The electrode assembly (22) is accommodated in the casing (21). The electrode terminal (23) comprises a pole (231) and a connecting member (232). The pole (231) passes through the mounting hole (2111). The pole (231) is electrically connected to the electrode assembly (22). In the thickness direction of the wall portion (211), the connecting member (232) is located on the side of the wall portion (211) facing away from the electrode assembly (22), and the connecting member (232) is connected to the pole (231). The connecting member (232) comprises a first material layer (2321) and a second material layer (2322) which are stacked in the thickness direction of the wall portion (211). The first material layer (2321) is located on the side of the second material layer (2322) facing away from the electrode assembly (22). The first material layer (2321) is electrically connected to the pole (231) and is connected to a flow convergence component. The melting point of the second material layer (2322) is greater than that of the first material layer (2321). According to the battery cell (20) of such structure, the thickness of the first material layer (2321) can be optimized while weld penetration of the connecting member (232) is reduced, so as to reduce the space occupied by the connecting member (232) in the thickness direction of the wall portion (211).

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China

Fachgebiete