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1. (WO2018120654) PROTECTION DEVICE FOR BATTERY, BATTERY, BATTERY PACK, AND VEHICLE

Pub. No.:    WO/2018/120654    International Application No.:    PCT/CN2017/087567
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Fri Jun 09 01:59:59 CEST 2017
IPC: H01M 10/48
H01M 10/42
G01R 31/36
B60L 11/18
A62C 3/16
A62C 31/00
Applicants: BYD COMPANY LIMITED
比亚迪股份有限公司
Inventors: LAI, Qing
赖庆
TONG, Zhiwei
仝志伟
ZHU, Yan
朱燕
ZHU, Jianhua
朱建华
Title: PROTECTION DEVICE FOR BATTERY, BATTERY, BATTERY PACK, AND VEHICLE
Abstract:
Provided in the present disclosure are a protection device for a battery, battery, battery pack, and vehicle. The protection device comprising a housing assembly, a sealing film, and a temperature-sensitive actuator. The housing assembly defines an accommodating cavity used to accommodate a noble gas. An opening is provided at one end of the accommodating cavity, and the sealing film is provided at the opening to seal the accommodating cavity. The actuator is provided within the accommodating cavity, and is provided with a puncturing protrusion. Upon deformation of the actuator, the puncturing protrusion punctures the sealing film.