Patent ID: 8035350
Filing Date: 2011-10-11
Classification: H02J

Abstract:
1. A battery charger comprising: a charging current control circuit for controlling a charging current to a set charging current value; a full-charge detecting circuit for generating a charging stop signal when the charging current is not higher than a set full-charge current value; and a battery temperature detecting unit for detecting the battery temperature of a secondary battery to be charged, said battery charger including: a setting current switching circuit having a comparator for inputting a battery temperature signal corresponding to the battery temperature detected by the battery temperature detecting unit and a reference signal corresponding to a reference temperature to vary the set charging current value and the set full-charge current value correspondingly to the output of the comparator, wherein the charging current control circuit and the full-charge detecting circuit include a voltage dividing resistance circuit, and the set charging current value and the set full-charge current value are switched depending on whether or not a voltage dividing value adjusting resistance is connected in parallel with a voltage dividing resistance forming the voltage dividing resistance circuit in accordance with the output of the setting current switching circuit.