| 摘要 |
A method for operating a master charging device for controlling multiple slave charging devices according to the present invention comprises steps of receiving payment information, transmitting a payment approval request message including the payment information to a payment server through an external communications network, receiving a payment approval from the payment server through the external communications network, and when the payment approval is received, transmitting an instruction to charge an electricity vehicle to a slave charging device corresponding to the payment information, among the slave charging devices through an internal communications network. |
