As technology develops and awareness of environmental protection arises, the electric vehicle has become a trendy product in the car market. Electrical power replaces fossil fuel with sustainable energy resources it provides. The advantage that electric vehicle has brought the demand for peripheral, such as electric vehicle charger and energy storage equipment. Besides, the AECQ-100 compliance-certified product is widely approved by the customer since it solves the safety issue of the current leakage from the EV charger.