Patent ID: 8013753

Claim:
A method for detecting operations of a power storage device comprising an electricity storage unit for storing power output from an electronic device or outputting power to the electronic device, the method comprising: detecting current between the electric storage unit and the electronic device to determine whether the electricity storage unit is malfunctioned and causes short circuit; generating an alarm signal when the electricity storage unit is malfunctioned and causes short circuit; a switching module, coupled between the electricity storage unit and the electronic device, for controlling a connection between the electricity storage unit and the electronic device according to current between the electricity storage unit and the electronic device; wherein the switching module comprises: a current sensing unit comprising a first terminal coupled to the electronic device, a second terminal and a third terminal, for sensing current between the first terminal and the second terminal and outputting a sensing result via the third terminal; a control unit, coupled to the third terminal of the current sensing unit, for outputting a control signal according to the sensing result; and a switch unit, coupled to the second terminal of the current sensing unit, the electricity storage unit, the control unit and the detecting unit, for coupling the electricity storage unit to either the current sensing unit or the detecting unit.