| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply device for a vehicle that strikes a balance between reduction in possibility of instantaneous drop and utilization of regenerative electric power. SOLUTION: The power supply device includes: a load 19 that is connected with a battery 11 via a switch 17; a DC/DC converter 21; a power accumulator 23 that is connected the DC/DC converter 21; and a control circuit 27. When the vehicle generates a regenerative electric power, the control circuit 27 switches on the switch 17 and the regenerative electric power is charged to the power accumulator 23. When the vehicle doesn't generate the regenerative electric power, the control circuit 27 switches on the switch 17. Until the power accumulator 23 is continued to drive the load 19 over a period of ts where the DC/DC converter 21 is actuated and a voltage of the battery 11 instantaneously drops, the DC/DC converter 21 discharges the power accumulator 23. When the voltage of the battery 11 instantaneously drops, the control circuit 27 switches off 17, the DC/DC converter 21 supplies electricity of the power accumulator 23 to the load 19. COPYRIGHT: (C)2011,JPO&INPIT |
