Patent ID: 7727668

Claim:
An integrated cap assembly of a secondary battery, the integrated cap assembly comprising: a cap lamination assembly having a safety vent, a contact plate connectable to an electrode lead of an electrode assembly in the secondary battery, and an insulating plate forming a connection between the safety vent and the contact plate at an electric connection portion; and a gasket formed integrally with the cap lamination assembly, a peripheral portion of at least one of the safety vent, the contact plate and the insulating plate of the cap lamination assembly being inserted in the gasket, the gasket insulating the cap lamination assembly from a can of the secondary battery and sealing a gap between the cap lamination assembly and the can, wherein a lowermost layer of the cap lamination assembly has a hole between an end and the center of the lowermost layer, and a portion of the gasket is inserted into the hole.