Method and system for testing and calibration of range extender bench of electric automobile

The invention discloses a method and system for testing and calibration of a range extender bench of an electric automobile. The method comprises the steps that M electricity generation rotation speeds and N electricity generation torque values are acquired to constitute M*N rotation speed-torque operating points; a range extender is controlled to carry out electricity generation operation according to an electricity generation rotation speed and an electricity generation torque value corresponding to each rotation speed-torque operating point, and operating parameters of the range extender at each rotation speed-torque operating point are obtained after a first preset time of the electricity generation operation; and according to the operating parameters of the range extender at each rotation speed-torque operating point, the range extender is calibrated, so that a range-extending electricity generation work curve of the range extender can be obtained. In this way, the rapid testing and the automatic calibra