Patent ID: 8609277

Claim:
A secondary battery, comprising a core ( 7 ) and cover plates ( 1 ), wherein positive tabs ( 4 ) are protruded from a first end of the core ( 7 ), and negative tabs ( 4 ) protrude from a second end of the core, characterized in that, for each of the positive tabs and negative tabs, a tab lead-out device is provided at a respective end of the core, the tab lead-out device comprises an insulating layer adjacent to the respective end of the core and a conductive layer away from the respective end of the core, said each of the positive tabs and negative tabs is electrically connected to the conductive layer, and the conductive layer is electrically connected to a respective cover plate ( 1 ), wherein the secondary battery further comprises a connector and a second pad ( 3 ) stacked between the conductive layer of the tab lead-out device and the respective cover plate ( 1 ), and said each of the positive tabs and negative tabs is compacted between the second pad ( 3 ) and the conductive layer of the tab lead-out device by the connector.