US Patent 11305669 Electronic control device

An electronic control device including a first and second arithmetic units enables supply of electric power to an inverter for driving a power motor of a vehicle for a travel of a vehicle, when a start switch of the vehicle is turned off and then turned on by a driver at a first arithmetic unit abnormal time, by using the second arithmetic unit, which determines whether a connection condition of a positive and negative electrode side system main relays is satisfied by examining a voltage of a smoothing capacitor and puts the two system main relays in a conductive state when the connection condition is determined as satisfied.