| 摘要 |
PROBLEM TO BE SOLVED: To dispense with plural batteries and DC-DC convertors and enable operation, even in case of failure of a controller, in an automobile electric power unit capable of supplying plural voltages. SOLUTION: The battery 6 is provided with a high-voltage terminal 11 and low-voltage terminal 12; a high-voltage FET 4 which controls the power supply in one direction from the high-voltage terminal 11 to the inverter 3 is connected between both of them, and a low-voltage FET 5, which controls the power supply in one direction from the invertor 3 to the low voltage terminal 12, is connected in between both of them. |
