Patent ID: 8828602

Claim:
A secondary battery comprising: an electrode assembly comprising at least one first electrode plate, at least one second electrode plate and at least one separator between the first and second electrode plates; at least one first electrode tab, the first electrode tab having a through hole and being connected to the first electrode plate; at least one second electrode tab, the second electrode tab having at least two through holes and being connected to the second electrode plate; a case housing the electrodes; first and second electrode leads at an outer side of the case, the first and second electrode leads each having at least two through holes and being electrically coupled to the first and second electrode tabs, respectively, wherein the first and second electrode leads and the first and second electrode tabs are respectively electrically coupled in the case by bolts passing through the case and through respective ones of the through holes of the first and second electrode tabs; a sealing layer between the case and the first electrode tab and between the case and the second electrode tab; and at least one reinforcing sheet located between two through holes of one of the first and second electrode tabs and directly contacting the sealing layer and one of the first and second electrode tabs.