EXPLOSION-PROOF DEVICE AND POWER BATTERY AND BATTERY MODULE COMPRISING THE SAME

摘要

An explosion-proof device for a battery which comprises: a vent formed in the battery shell(5) of the battery;a valve vore movably disposed in the vent(51) to seal and open the vent(51),a support mounted on the outer wall of the battery shell(5);and an elastic element(2) connected to the support and the valve core(1) at two ends thereof respectively so as to normally push the valve core(1) to seal the vent(51).A power battery and a power battery module comprising the explosion-proof device are also provided.