Positioning device and method of automatic charging robot

The invention relates to a positioning device of an automatic charging robot, which comprises a control processing module, a storage module and a shooting module, wherein the storage module is used for storing standard characteristic values of electric vehicles in various models and standard control parameters of the charging robot corresponding to the standard characteristic values; the shooting module is used for shooting the to-be-charged vehicles and transmitting pictures to the control processing module; and the control processing module performs image processing on picture information to obtain actual characteristic values, compares and analyzes the actual characteristic values and the standard characteristic values to obtain control deviations, obtains actual control parameters according to the standard control parameters and the control deviations, and accomplishes positioning control on the charging robot according to the actual control parameters. The positioning device has the technical benefits of automation, no labor participation, construction cost saving and high charging efficiency.