Charging system of electric vehicle, charging method thereof, gateway and charging power supply

The invention relates to a charging system and a charging method of an electric vehicle. The method comprises the following steps: a gateway communicates with a charged electric vehicle through a carrier communication mode based on a power line to obtain a storage battery identifier of the electric vehicle; the background server authorizes the gateway to perform charging control on the electric vehicle based on the storage battery identifier of the electric vehicle and user information bound with the storage battery identifier of the electric vehicle; charging of the electric vehicle is realized based on charging control of the gateway on the electric vehicle; the background server performs charge-related fee settlement based on the charging state information of the electric vehicle detected by the gateway and the user information. According to the invention, non-inductive charging can be realized, and the use convenience is improved. 本发明涉及电动车的充电系统以及充电方法。该方法包括：网关通过基于电力线的载波通信方式与进行充电的电动车通信以获取电动车的电瓶标识；后台服务器基于电动车