Sekundärbatterie und Elektronische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4773428

Anmeldetag

3. Juli 2025

Veröffentlichung

5. März 2026

Rechtsraum

EP

IPC

H01M50/593

Abstract

This application discloses a secondary battery and an electronic apparatus. The secondary battery includes a packaging pouch, an electrode assembly, an electrical connection member, a first insulating member, and a second insulating member, where the electrode assembly is located in the packaging pouch, the electrode assembly includes a main body portion and a tab assembly, the tab assembly includes a plurality of tabs, and the electrical connection member is located outside the packaging pouch and is electrically connected to the tab assembly. The tab assembly includes a first portion and a second portion. The first portion protrudes from the main body portion and is connected to the second portion. The second portion is bent toward the main body portion, the second portion forms a weld mark with the electrical connection member, and the second portion includes a first surface and a second surface. The first insulating member covers the weld mark, the second insulating member is located on one side in a thickness direction of the tab, and the second insulating member extends from the first surface of the second portion through the first portion to the main body portion. A thickness of the first insulating member is T₁, a thickness of the second insulating member is T₂, T₁ > T₂, 25 µm ≤ T₁ ≤ 60 µm, and T₂ ≥ 4 µm, balancing the safety performance and drop performance of the secondary battery.

Anmelder

Firmen

Ningde Amperex Technology Limited
Dongguan Amperex Technology Limited

Land

🇨🇳 China

Fachgebiete