Ac charging pile is designed for electric vehicle charging device provide ac power. This intelligent ac charging pile using intelligent control technology, in a safe and secure, intelligent efficient, convenient operation, and other key links have prominent characteristics. The touch screen and whole voice prompt, has friendly interface, using an IC CARDS or plug-in IC card and automatic bill printed billing system, have diversified charging mode for users to choose, with software and hardware double protect the safety of the person and equipment protection measures, is to provide electric car battery service industry of important equipment. meanwhile,it has efficient billing, measuring, charges and charge function, highly integrated, ensure the background data transmission of reliability and stability