Patent attributes
A control device comprising an electric power supply control part controlling a supply of electric power to a rotary electrical machine so as to use the output electric power of a second battery to make up for insufficient output electric power of a first battery when driving a vehicle by just drive power of the rotary electrical machine and a startup preparation starting part starting a supply of electric power to the catalyst device to start preparation for startup of the internal combustion engine if driving a vehicle by just drive power of the rotary electrical machine and the state of charge of the second battery becomes less than the state of charge for preparation for startup. The startup preparation starting part is configured to increase the state of charge for preparation for startup when the maximum output electric power of the first battery calculated based on the state of the first battery is small compared to if it is large.
