Sekundärbatterie und Elektronische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4718509

Anmeldetag

30. September 2025

Veröffentlichung

1. April 2026

Rechtsraum

EP

Abstract

A secondary battery (100) includes a negative electrode plate (22), a positive electrode plate (21), and a separator (23). The positive electrode plate (21) includes a positive current collector (211), a first positive active material layer (212), and a positive tab (213). Along a thickness direction of the positive current collector (211), a surface of the positive current collector (211) is provided with the first positive active material layer (212). The first positive active material layer (212) is provided with a first groove (2121). The positive tab (213) is disposed in the first groove (2121) and is electrically connected to the positive current collector (211). A first positive electrode insulation layer (24) is disposed on a surface of the first positive active material layer (212) facing the negative electrode plate (22). The first positive electrode insulation layer (24) covers the first groove (2121). A first negative electrode insulation layer (24) is disposed on a surface of the negative electrode plate (22) facing the first positive active material layer (212). Along a direction perpendicular to a surface of the first negative electrode insulation layer (25), a projection of the first negative electrode insulation layer (25) on the first positive active material layer (212) covers the first groove (2121). Along a width direction of the first groove (2121), a first hole (2521) is provided on one side of the first negative electrode insulation layer (25).

Anmelder

Firma

Ningde Amperex Technology Ltd.

Land

🇨🇳 China