AC charging pile

The utility model discloses an AC (alternating current) charging pile. The AC charging pile comprises an electric energy meter, an AC contactor, a master control module, a relay, a signal detection module, a card reader, a display module and a touch screen, wherein the master control module comprises an ARM embedded-type management platform, a human-computer interface/interface driver, a communication interface, a radio frequency card interaction module, a sound prompt module and a charging administration module; the master control module is connected with the display module and the touch screen through the human-computer interface/ interface driver and interacts with the card reader through the radio frequency card interaction module; the signal detection module is connected with the master control module and used for detecting the state of equipment; and the master control module communicates with the electric energy meter through an RS485 interface and controls the AC contactor to actuate the actions of power transmission and power turn-off of a power source through the relay. The AC charging pile is mainly used for charging electrically-driven motor vehicles.