Druckentlastungskomponente, Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4779781

Anmeldetag

27. Mai 2024

Veröffentlichung

5. Juni 2025

Rechtsraum

EP

IPC

H01M50/342, H01M50/30

Abstract

A pressure relief component (23), a battery cell (20), a battery (100), and an electric device. The pressure relief component (23) is provided with a score groove (231); the score groove (231) extends along a closed trajectory and defines a pressure relief area; the score groove (231) comprises a first groove section (2311) and a second groove section (2312), and the first groove section (2311) and the second groove section (2312) are both arc sections, such that the first groove section (2311) and the second groove section (2312) extend smoothly, and stress concentration points are not prone to formation, thereby reducing the possibility of premature cracking caused by the stress concentration of the first groove section (2311) and the second groove section (2312), prolonging the service life of the battery cell (20). In addition, the first groove section (2311) is bent towards a center point of the pressure relief area, and the acting force borne by the first groove section (2311) is smaller, such that the possibility of the pressure relief area deforming under force is smaller, and the possibility of premature cracking of the score groove (231) is smaller. The second groove section (2312) is bent away from the center point of the pressure relief area, such that the area of the pressure relief area is larger, and a larger pressure relief channel can be formed after the score groove (231) is opened under force, thereby reducing the possibility of thermal runaway or even explosion of the battery cell (20).

Anmelder

Firma

Contemporary Amperex Technology Co., Limited

Land

🇨🇳 China

Fachgebiete