METHOD OF GRADING ELECTRIC VEHICLE CHARGER AND EVALUATION METHOD OF CHARGING PERFORMANCE RELATED TO ELECTRIC VEHICLE

The present invention provides a method for determining the management grade of an electric vehicle charger and a method for evaluating charging performance in connection with an electric vehicle. The method for determining the management grade of an electric vehicle charger comprises the steps of: measuring, by a power meter for determining the management grade of an electric vehicle charger and evaluating performance in connection with an electric vehicle, power consumed by the electric vehicle charger when the electric vehicle charger is in a standby mode; connecting the electric vehicle charger and a load to start charging, and calculating charging power transfer efficiency, which is the ratio of output power and input power of the electric vehicle charger when the output power of the electric vehicle charger is maximum during the charging; measuring power consumed by the electric vehicle charger when the electric vehicle charger is in a standby mode after the charging is finished; and determining the management grade of the electric vehicle charger, based on the power consumed by the electric vehicle charger and the charging power transfer efficiency. Therefore, the method can reflect operating cost factors, thereby enabling the electric vehicle charger to be systematically classified and managed. 본 발명은 전기자동차 충전기의 등급 판정 방법과 전기자동차 연계 충전성능 평가 방법을 제공한다. 본 발명에 따른 전기자동차 충전기 운용등급 판정 방법은, 충전기 운용등급 판정 및 연계충전성능 평가를 위한 전력측정기 전기자동차 충전기가 대기상태일 때 상기 충전기에서 소모되는 전력을 측정하는 단계; 상기 충전기와 부하를 연결하여 충전을 개시하며, 상기 충전 과정에서 상기 충전기의 출력전력이 최대일 때의 상기 충전기의 출력전력과 입력전력의 비율인 충전전력 전달효율을 계산하는 단계; 충전 종료 후 상기 충전기가 대기상태일 때 상기 충전기에서 소모되는 전력을 측정하는 단계; 및 상기 충전기에서 소모되는 전력과 상기 충전전력 전달효율을 기초로 충전기 운용등급을 판정하는 단계;를 포함한다.