Electric vehicle automatic charging method and system

The invention provides an electric vehicle automatic charging method and system . The method comprises the following steps: the charging equipment receives a charging request message including vehiclemodel information sent by the electric vehicle, obtains the height from an electric vehicle power receiving interface to the ground according to the vehicle model information, and adjusts the position of a charging plug in the height direction, so that the height from the charging plug to the ground is the same as the height from the electric vehicle power receiving interface to the ground; the charging equipment moves in a first horizontal direction drives a laser source to emit a line laser signal to the electric vehicle in the moving process, obtains the position coordinates of the electric vehicle power receiving interface in the first horizontal direction and the second horizontal direction through laser ranging scanning, then adjusts the position of the charging plug on the horizontal plane according to the