Electric vehicle regenerative brake test loading mechanism and method

The invention relates to a regenerative brake inertia test stand device, in particular to an electric vehicle regenerative brake test loading mechanism and method. When a regenerative brake inertia test stand brakes, a motor rotating speed signal is input to an ECU, the ECU calculates a required loading axle load according to the rotating speed of a motor, the loading axle load is converted into a rotating angle of the stepping motor, and then the flow of a throttling valve is controlled; meanwhile, an electromagnetic directional valve is controlled to conduct reversing and then the displacement of a hydraulic cylinder is controlled, and then automatic loading of a front axle vertical load and a rear axle vertical load is achieved.