Patent ID: 8603669

Claim:
A battery pack, comprising: a bare cell including a can having an opening, an electrode assembly disposed in the can and a cap assembly disposed on the opening of the can, the electrode assembly including a first electrode plate and a second electrode plate, the cap assembly including an electrode terminal electrically connected with the first electrode plate and a cap plate electrically connected with the second plate; a protrusion disposed at ends of the cap plate, the protrusion extending from the surface of the cap plate; and a protection circuit assembly disposed above the surface of the cap plate, the protection circuit assembly including an external lead plate electrically connected with the cap plate, and an internal lead plate electrically connected with the electrode terminal, wherein the external lead plate includes a coupling hole coupling with the protrusion, and wherein a vertical distance between the bare cell and the protection circuit assembly is same as a vertical distance of the external lead plate, wherein the protrusion includes a first protrusion disposed at an end of the cap plate, and a second protrusion disposed at another end of the cap plate, wherein the external lead plate includes a first external lead plate having a first coupling hole coupling with the first protrusion and a second external lead plate having a second coupling hole coupling with the second protrusion, and wherein a distance between the first and second protrusion is greater than a length of the protection circuit board.