PURPOSE: A security method for a vehicle when charging is provided to prevent the vehicle from being stolen by warning a try at stealing the vehicle when a driver is moved to the remote position where the driver cannot recognize the try at stealing the vehicle. CONSTITUTION: A security method for a vehicle when charging comprises: a step of determining whether or not a smart key exist inside the vehicle or around the vehicle when charging a battery of the vehicle and the key converts on-state into off-state(S40); a step of warning if the smart key does not exist inside the vehicle or around the vehicle and is converted into the off-state(S50); a step of determining whether or not warning is passed over the predetermined time(S60); and a step of stopping the warning if the warning is passed over the predetermined time(S70). [Reference numerals] (AA) Start; (BB) Charging finished; (CC) End; (S10) Smart key exists & Key is on & Charging door is open & Charging connector is connected?; (S20) Start charging; (S30) Display a charging state; (S40) Smart key doesn't exist & Key is off?; (S50) Make a warning; (S60) Predetermined time passed?; (S70) Stop the warning
본 발명은 전기차 등에서 비교적 장시간 충전이 이루어지는 경우에 대비하여, 운전자가 차량의 도난을 인지하기 어려운 원격지로 이동하였을 때에도, 차량의 도난 시도에 대하여 이를 경고할 수 있도록 함으로써, 차량의 도난을 방지할 수 있도록 한다.