POWER SUPPLY DEVICE FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To achieve disuse of a large-sized DC-DC converter.SOLUTION: The power supply device for vehicle 1 includes: a power battery 2; an energy battery 3; a motor inverter 4 that controls an electric motor for vehicle drive; an electric air conditioner 5 and a car accessory 6 as other loads than the motor inverter 4; a first circuit 8 that connects the power battery 2 with the motor inverter 4; and a second circuit 9 that connects the energy battery 3 with the electric air conditioner 5 and the car accessory 6.