Elektrochemische Vorrichtung, Elektrische Vorrichtung und Herstellungsverfahren für eine Elektrochemische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4756974

Anmeldetag

4. August 2023

Veröffentlichung

13. Februar 2025

Rechtsraum

EP

IPC

H01M10/0587

Abstract

An electrochemical apparatus, an electrical device, and a preparation method of an electrochemical apparatus are provided. The electrochemical apparatus includes an electrode assembly. The electrode assembly includes an electrode plate assembly, a first tab, and a second tab. The electrode plate assembly includes a first electrode plate and a second electrode plate. The first electrode plate includes a first current collector and a first active material layer, a first region of a winding tail section of the first current collector is connected to the first tab, and the first current collector includes a first coated region and a first segment located at the winding tail section. The second electrode plate includes a second current collector and a second active material layer, a second region of a winding tail section of the second current collector is connected to the second tab, and the second current collector includes a second coated region and a second segment located at the winding tail section. A sum of equivalent magnetic field strengths of the first current collector F₁ and a sum of equivalent magnetic field strengths of the second current collector F₂ satisfy: |F₁-F₂|≤4×10^-5, which can better reduce an axial magnetic field at an end face of a wound structure, thereby further reducing interference of the electrochemical apparatus to the electrical device.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China

Fachgebiete