System and method for controlling power to electronic control unit of vehicle

A power control system of an electronic control unit of a vehicle, the power control system comprising:

• the electronic control unit including a plurality of devices configured to enable autonomous running of the vehicle and a control module for controlling the plurality of devices;
• a main battery and an auxiliary battery configured to supply power to the electronic control unit;
• a main electronic fuse configured to be connected to a main circuit, which is connected to the main battery and the electronic control unit, and configured to detect at least one of a temperature and current flowing in the main circuit to determine whether a failure occurs in the main circuit;
• an auxiliary electronic fuse configured to be connected to an auxiliary circuit, which is connected to the auxiliary battery and to the electronic control unit, and configured to detect at least one of a temperature and current flowing in the auxiliary circuit to determine whether a failure occurs in the auxiliary circuit;
• and
• a power control unit configured to be connected to the main electronic fuse and to the auxiliary electronic fuse, and configured to control an ON/OFF operation of the main electronic fuse and the auxiliary electronic fuse according to whether a failure occurs in the main electronic fuse and the auxiliary electronic fuse in order to control power to be supplied to the electronic control unit,
• wherein the power control unit controls power to be selectively supplied to a plurality of electric loads in the vehicle through the auxiliary battery when the failure occurs in the main circuit,
• wherein the power control unit controls the power to he selectively supplied to the plurality of electric loads in the vehicle according to a state of charge (SOC) of the auxiliary battery when the power is selectively supplied to the plurality of electric loads in the vehicle through the auxiliary battery, and
• wherein the plurality of electric loads, to which the power is selectively supplied, include motor-driven power steering (MDPS) associated with the steering for allowing autonomous running of the vehicle and an electronic stability control (ESC) associated with the braking of the vehicle, and further includes a traction control system (TCS), an anti-lock braking system (ABS), and a limited-slip-differential (LSD).