Parallel large current DC electric vehicle charging system pile

The invention discloses a charging method of a parallel connection heavy-current direct-current electric automobile charging post system, which belongs to the technical field of electric automobile charging. A main control module (1) obtains a charging demand of the electric automobile trough an electric automobile communication module (7), and obtains charging parameters through a touch display screen (2). A connection detection module detects connection signals of each path of charging interfaces and the electric automobile. Whether the charging current of each charging interfaces according with an allowable value of the charging interface is calculated according to the charging parameters and the connection signals of the charging interfaces: if not, a charging switch is turned on, a direct current power supply module (6) works and the charging begins, and fault information is displayed on the touch display screen (2). The parallel connection charging interface technology and the charging interface connection intelligent judgment technology are employed. Corresponding charging interfaces and charging cables can be selected according to the charging parameters, and multipath and parallel connection use can be achieved during large current. The charging speed is fast and the safety performance is high.