| 摘要 |
PROBLEM TO BE SOLVED: To provide a device that includes a converter and an inverter each being connected to a battery and is configured to drive a motor by the inverter, in which the battery is charged at high efficiency by connecting an external power supply thereto.SOLUTION: A charging additional circuit 24 is connected between a positive electrode side of a battery 10 and a positive electrode side of a converter 12, and a connector 20 and an external AC power supply 18 are connected to the charging additional circuit 24. When a switching transistor on the positive electrode side of the converter 12 is turned on, a rectified voltage is applied to a step-up reactor L thereby to increase a reactor current. Thereafter, when the switching transistor on the positive electrode side of the converter 12 is turned off, the current passing through the step-up reactor L passes through the battery 10 thereby to charge the battery 10. |
