| 摘要 |
A power source unit includes an inverter connected to a power transfer device, a first battery that can be charged and discharged through the inverter and a second battery that can be charged and discharged through the inverter. The second battery has a power voltage lower than that of the first battery. The power source unit further includes a power conversion device connected to the inverter, providing a transforming function, and a switching device provided between the power conversion device and the first and second batteries. The switching device switches a connection between the power conversion device and the first battery, and the power conversion device and the second battery. The inverter is connected to the first and the second batteries through the power conversion device.
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