| 摘要 |
Disclosed is a battery charger (50) for an electric vehicle, which prevents capacitors (C1,C2) in an incorporated voltage doubler section (53) from being deteriorated even when the voltage doubler section is not used over a long period of time and can therefore permit a main battery (10A) for feeding drive power to motors to be charged reliably in an emergency. This battery charger comprises a voltage doubler section having capacitors for rectifying and boosting an AC input voltage to a doubled voltage, a converter section (51) for converting a DC input voltage to an AC voltage and boosting the AC voltage to a predetermined voltage level and normally applying the AC voltage of the predetermined voltage level to the capacitors of the voltage doubler section, and a switch section (54), connected between the main battery and the voltage doubler section, for disconnecting the main battery from the voltage doubler section when the main battery is not charged and connecting the main battery to the voltage doubler section at a time of charging the main battery. <IMAGE> |
