Patent ID: 7456605
Filing Date: 2008-11-25
Classification: H02J

Abstract:
1. A battery charger comprising: a case having a battery pocket that can detachably mount a battery to be charged; a temperature detection portion that contacts the battery mounted in the battery pocket and detects its battery temperature; a charge circuit that controls charge of the battery based on the battery temperature detected by the temperature detection portion; and a cooling fan, installed in the case, for blowing air to cool the battery loaded in the battery pocket, wherein: the temperature detection portion includes a heat conduction plate and a temperature sensor that is fastened to the heat conduction plate, the heat conduction plate is an integral structure formed by stamping and bending a single metal sheet to accommodate AA and AAA batteries the heat conduction plate includes upper lower sandwich plates that sandwich the temperature sensor, an elastic connection arm that connects a first side of the upper sandwich plate and a first side of the lower sandwich plate, interlock portions located at a second side of the upper sandwich plate, and protrusion strips that upwardly protrude from opposite third and fourth sides of the lower sandwich plate, the interlock portions are engaged with inner surfaces of the protrusion strips so as to couple the second sides of the upper and lower sandwich plates, and the upper sandwich plate is located between the protrusion strips, and the protrusion strips and the upper surface of the upper sandwich plate are in contact with or close to the battery surface and thus, the upper and lower sandwich plates sandwich and fasten the temperature sensor such that the temperature sensor is fastened to the heat conduction plate for detecting the battery temperature.