CONTROL DEVICE FOR VEHICLE AND METHOD OF CONTROLLING VEHICLE

摘要

A control device for a vehicle includes a relay adapted to switch whether a first battery electrically connected to a motor generator and a second battery electrically connected to an electric load of the vehicle are to be electrically connected or not by turning on/off the relay. The relay is turned off during a power operation of the motor generator to disconnect an electric connection between the first battery and the second battery. The relay is turned on during a regenerative operation of the motor generator to electrically connect the first battery and the second battery. In a case where an on-fixation failure of the relay is detected, the power operation of the motor generator is prohibited.

主权项

1. A control device for a vehicle, comprising:
a motor generator mechanically connected to an output shaft of an engine; a first battery electrically connected to the motor generator; a second battery electrically connected to an electric load of the vehicle; a relay adapted to switch whether the first battery and the second battery are to be electrically connected or not by turning the relay on or off; a motor generator control unit adapted to cause the motor generator to carry out a power operation or a regenerative operation of in accordance with an operation state of the vehicle; a relay control unit adapted to turn off the relay during the power operation of the motor generator so as to disconnect an electric connection between the first battery and the second battery, the relay control unit also adapted to turn on the relay during the regenerative operation of the motor generator so as to electrically connect the first battery and the second battery; and an on-fixation failure detecting unit adapted to detect an on-fixation failure in which the relay is fixed in an on state, wherein the motor generator control unit prohibits the power operation of the motor generator in a case where the on-fixation failure of the relay is detected.