Elektrodenfolie, Batteriezelle und Batterie

Details

Veröffentlichungs-Nr.

EP4811435

Anmeldetag

17. März 2025

Veröffentlichung

2. Januar 2026

Rechtsraum

EP

IPC

H01M4/13

Abstract

The present application provides an electrode sheet, a cell and a battery, relating to the technical field of batteries. The electrode sheet includes a current collector, and an active layer and an insulation layer located on the current collector, where the active layer includes a first main body region and an edge region connected to each other, and the insulation layer includes a second main body region and a first side region close to the active layer, a thickness of the first side region of the insulation layer being less than a thickness of the second main body region of the insulation layer. A ratio of a minimum thickness of the edge region to a thickness of the first main body region ranges from 0.95 to 1.05. In the electrode sheet provided in the embodiments of the present application, the overall thickness difference of the active layer can be effectively reduced, making the thickness of the active layer on the current collector more uniform. In this way, after the electrode sheet is wound or stacked, the accumulation of thickness difference can be effectively reduced, and the thickness difference between the main body part in the middle and the edge part of the cell can be effectively reduced. The content of the active layer can be effectively increased, thereby effectively increasing the energy density of the cell.

Anmelder

Firma

Zhuhai CosMX Battery Co., Ltd.

Land

🇨🇳 China

Fachgebiete