Vehicle and method for controlling power supply to external load based on SOC

A method of controlling a vehicle including a battery, a converter electrically connected to the battery and a navigation device, and configured to provide electrical power of the battery to an external load electrically connected to the converter, the method comprising:

• determining, by a controller operatively connected to the battery and the converter, required energy of the vehicle to travel from a current location of the vehicle to a nearest charging place after end of driving and parking of the vehicle;
• determining, by the controller, a safety state of charge (SOC) value of the battery for ensuring driving of the vehicle to the nearest charging place based on the required energy and a total capacity of the battery;
• controlling, by the controller, the converter to cut off supplying of the electrical power to the external load in response that an SOC value of the battery reaches the safety SOC value, and
• wherein the method further includes:
• determining, by the controller, driving energy efficiency based on a driving distance and consumed electrical energy from start of the driving till the end of the driving,
• wherein the determining of the required energy includes determining the required energy based on the driving energy efficiency and a minimum distance to the nearest charging place, wherein the determining of the driving energy efficiency includes:
• determining sectional energy efficiency for each predetermined distance section while driving;
• and
• determining average energy efficiency for at least one distance section as the driving energy efficiency,
• wherein the determining of the driving energy efficiency further includes:
• determining a first average energy efficiency for at least one first distance section;
• after the at least one first distance section, based on detecting that a negative sectional energy efficiency reduced by a predetermined threshold from the first average energy efficiency is detected, determining a second average energy efficiency for at least one second distance section having the detected negative sectional energy efficiency;
• and
• determining the second average energy efficiency as the driving energy efficiency, and
• wherein the determining of the required energy includes determining the required energy by dividing the minimum distance to the nearest charging place by the driving energy efficiency.