| 摘要 |
PROBLEM TO BE SOLVED: To suppress that a vehicle becomes impossible to travel even if an abnormal condition occurs, and to enable a user to recognize the occurrence of the abnormal condition.SOLUTION: A switch circuit 49 is connected to a high-pressure side capacitor 46 in parallel, and a connection point of switches SW1 and SW2 is connected to a vehicle body. An insulation resistance monitor 52 for determining an insulation state between the switch SW2 and the vehicle body is provided. Even when an abnormal condition that the switch SW2 is fixed to be turned on occurs, by turning off the switch SW1, it can be suppressed that a vehicle becomes impossible to travel. When it is determined that insulation resistance between the switch SW2 and the vehicle body is deteriorated on the basis of a voltage waveform from the insulation resistance monitor 52, a warning lamp 56 is turned on, thereby enabling a user to recognize the occurrence of the abnormal condition. |
