Patent ID: 8518576

Claim:
A secondary battery comprising: at least one bare cell including a first electrode and a second electrode; a Protection Circuit Module (PCM) electrically coupled to the first electrode and the second electrode of the bare cell; and an abnormal temperature sensing member provided on a surface of the bare cell and electrically coupled to the PCM, the abnormal temperature sensing member comprising: a first wire; a second wire; a heat shrink member between the first wire and the second wire, and electrically insulating the first wire and the second wire while the bare cell is below a predetermined temperature and not electrically insulating the first and second wires when the bare cell is above the predetermined temperature; and an outer cover enclosing the first wire, the second wire, and the heat shrink member, the outer cover being between the at least one bare cell and the first and second wires, wherein the abnormal temperature sensing member is electrically short-circuited when the bare cell is heated above the predetermined temperature.