Patent ID: 8084155

Claim:
A lithium rechargeable battery, comprising: an electrode assembly that includes first and second electrodes wound together with a separator interposed between them; a cap assembly comprising a cap plate and an insulation plate; an insulation case positioned on top of the electrode assembly and spaced apart from the cap assembly between the electrode assembly and the cap assembly; and a can containing the electrode assembly and the insulation case, wherein the cap plate is coupled to the top of the can, wherein a safety vent is formed on the cap plate or the can, wherein the insulation case has at least one of an electrolyte injection hole and an electrode tab drawing hole, wherein the insulation case has at least one other hole, and wherein the other hole is a gas evacuation hole and is positioned directly below the safety vent, wherein the insulation case has at least one supporter formed on its side and at least one portion on its side where the supporter is not formed.