Patent ID: 8404372
Filing Date: 2013-03-26
Classification: H01M,Y02E

Abstract:
1. A safety device for use in a lithium ion battery, comprising a top cover defining a central hole and a plurality of peripheral holes around the central hole, the top cover being formed with an electrode leading device, the electrode leading device comprising a through-hole defined in the top cover, an electrode pole received in the through-hole, an insulating grommet set around the electrode pole for electrically separating the electrode pole from the top cover, and a conductive strip disposed around the electrode pole and abutting against a lower surface of the insulating grommet; a rupture plate fixed to a bottom surface of the top cover and sealing the central hole and the peripheral holes; and a vent plate defining at least one air hole electrically connected to the rupture plate via an electrical connection point.