Sekundärbatterie und Elektronische Vorrichtung
Anmelder: Ningde Amperex Technology Limited 🇨🇳
Details
- Veröffentlichungs-Nr.
- EP4734165
- Anmeldetag
- 3. März 2026
- Veröffentlichung
- 29. April 2026
- Rechtsraum
- EP
Abstract
A secondary battery includes an electrolyte and a negative electrode plate, where a viscosity of the electrolyte is P MPa·s. A first material layer includes a first negative electrode active material, which includes no silicon element. A second material layer includes a second negative electrode active material and a polyurethane binder. Based on a mass of the second material layer, a mass percentage of the silicon element is W<sub>1</sub>%, and a mass percentage of the polyurethane binder is W<sub>2</sub>%. Along a thickness direction of the negative electrode plate, the negative electrode active material layer is provided with at least one groove, where a cross-sectional area of the groove is S µm<sup>2</sup>, and a depth of the groove is H µm. Wherein 1≤W<sub>1</sub>≤50, and S=K<sub>1</sub>+20W<sub>1</sub>; 400≤K<sub>1</sub>≤800;1≤W<sub>2</sub>≤10, 2≤P≤8, and H=K<sub>2</sub>W<sub>2</sub>P/S;800≤K<sub>2</sub>≤1200.
Anmelder
- Firma
- Ningde Amperex Technology Limited
- Land
- 🇨🇳 China
Chinesischer Hersteller von Lithium-Ionen-Batterien mit Sitz in Ningde, mehrheitlich im Besitz des japanischen Konzerns TDK. Aus dem Unternehmen ging 2011 die heute eigenständige CATL hervor.
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