APPARATUS FOR CONTROLLING CHARGING OR DISCHARGING OF VEHICLE, SYSTEM FOR SUPPLYING POWER TO OUTSIDE OF THE VEHICLE, AND METHOD THEREOF

A charging and discharging control apparatus for a vehicle is provided. The apparatus for a vehicle includes a processor that controls charging and discharging of electric energy of the vehicle and a storage that stores data and algorithms driven by the processor. The processor senses a voltage of a proximity detection signal line to determine whether a discharging connector for supplying a voltage to an outside of the vehicle or a charging connector for supplying a voltage to an inside of the vehicle is connected to an inlet of the vehicle, and determines whether a discharging start command is applied by sensing a voltage of a control pilot signal line when the discharging connector is connected.