Patent ID: 6761996
Filing Date: 2004-07-13
Classification: H01M,Y02E,Y02P

Abstract:
A lithium secondary battery comprising:a) a can having an internal space; b) a polar plate set comprising an anode plate, a cathode plate, and a separator, wherein said polar plate set is installed by being inserted into said can; c) a cap assembly having an electrolyte injecting hole arranged on an open part of the can that seals the can's interior; and d) a sealing member for the electrolyte injecting hole comprising an inserting part and a head part, wherein the inserting part is inserted into the electrolyte injecting hole and affixed to it, and the head part is closely adhered to the upper surface of the cap assembly when the sealing member is inserted into the electrolyte injecting hole, wherein the electrolyte injecting hole is sealed by welding the sealing member such that the bottom surface of the head part is contiguous with the upper surface of the cap assembly.