Method of AC charging for electric cars based on demand-responsive and apparatus

摘要

A method for charging an electric vehicle, the method comprising the steps of: (a) generating a demand response event signal based on a demand response message requesting current demand adjustment according to a demand response service received via a predetermined external communication interface; (b) deriving an allowable current amount for charging the electric vehicle based on the demand reaction event signal; And (c) generating a pulse width modulation (PWM) duty cycle of the electric vehicle charge current based on the allowable current amount, and controlling the amount of charge current by applying the generated PWM duty cycle, The signal includes a load reduction ratio information, and a charging method of a demand-responsive electric vehicle according to an embodiment of the present invention. The electric vehicle charging device includes an external communication interface for performing data communication with an external communication device. A demand reaction processing unit for generating a demand reaction event signal based on a demand response message requesting current demand adjustment for each demand reaction service received through the demand reaction processing unit; And a current control unit for deriving an allowable current amount for charging the electric vehicle based on the demand reaction event signal, wherein the demand reaction event signal includes load reduction ratio information.