Negativelektrodenfolie, Elektrochemische Vorrichtung und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4773199

Anmeldetag

17. Januar 2025

Veröffentlichung

2. Oktober 2025

Rechtsraum

EP

Abstract

The present application relates to the field of battery technologies and discloses a negative electrode plate, an electrochemical apparatus, and an electric device. The negative electrode plate includes a first active material layer, a first current collector, and a second active material layer; the first active material layer includes a first coating and a second coating disposed between the first coating and the first current collector, along a first direction, a first end of the second coating exceeds a first end of the first coating, such that the first active material layer has a first single-layer portion, and/or along a second direction, a second end of the second coating exceeds a second end of the first coating, such that the first active material layer has a second single-layer portion, where the first direction and the second direction are opposite. The negative electrode plate, along the first direction or the second direction, has the second coating exceeding the first coating, thereby addressing the issue that two end portions of the active material layer are prone to overpressure during the rolling process, which leads to damage to the first current collector. This reduces the probability of tape breakage during the rolling process of the negative electrode plate and improves the production yield of the negative electrode plate.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China