Patent ID: 7737658
Filing Date: 2010-06-15
Classification: H01M,H02J,Y02E

Abstract:
1. A battery pack having a secondary battery, the battery pack comprising: a voltage converter configured to provide a discharging voltage or a charging voltage based on an operational mode of the battery pack; a switching unit which switches the operation mode of the voltage converter between a charging mode in which the voltage converter is electrically coupled between the secondary battery and a power input terminal and a discharging mode in which the voltage converter is operatively electrically coupled between the secondary battery and a power output terminal; a power controlling unit configured to turn the voltage converter on or off; a voltage converter sensing unit configured to send a signal indicative of a temperature of the voltage converter to the power controlling unit; a secondary battery sensing unit coupled to the secondary battery and configured to send a signal indicative of the temperature of the secondary battery to the power controlling unit; a case housing the secondary battery, voltage converter, and the switching unit; and a plug having blades for reception into a power receptacle, the plug rotatably coupled to the case and having a first state when rotated to a first position and effecting the switching unit to switch the operation mode of the voltage converter to the charging mode and a second stated when rotated to a second position and effecting the switching unit to switch the operation mode of the voltage converter to the discharging mode, wherein,