Sekundärbatterie und Herstellungsverfahren dafür sowie Elektrische Vorrichtung
Anmelder: Contemporary Amperex Technology Co., Limited 🇨🇳
Details
- Veröffentlichungs-Nr.
- EP4723202
- Anmeldetag
- 15. September 2023
- Veröffentlichung
- 5. Dezember 2024
- Rechtsraum
- EP
Abstract
A secondary battery (5) and a manufacturing method therefor, and an electric device (6). The secondary battery (5) comprises a positive electrode sheet and a negative electrode sheet. The negative electrode sheet comprises a negative electrode active material layer. The negative electrode active material layer comprises a negative electrode active substance. The negative electrode active substance comprises a silicon-based material. In the same charging and discharging cycle process, the volume ratio of the negative electrode sheet during charging and discharging of the secondary battery (5) is R, wherein R is less than or equal to 1.5; and the volume ratio of the positive electrode sheet during charging and discharging of the secondary battery (5) is Y, wherein Y is less than or equal to 0.98.
Anmelder
- Firma
- Contemporary Amperex Technology Co., Limited
- Land
- 🇨🇳 China
Chinesisches Unternehmen mit Sitz der Konzerngesellschaft in Hongkong, das Batteriezellen und Energiespeicherlösungen für Elektrofahrzeuge und Stromnetze entwickelt und herstellt.
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