Test method and device for measuring vehicle energy recovery efficiency

The invention discloses a test method and device for measuring the energy recovery efficiency of a vehicle. The test method for measuring the energy recovery efficiency of the vehicle comprises the steps that S1, wheels of a vehicle are controlled to rotate and kept at the current rotating speed; S2, a brake pedal is stepped down, and the brake pedal is controlled to keep a first variable and a second variable; S3, the wheel edge torque and the driving shaft torque of the wheel in the braking process are obtained, and the braking energy recovery efficiency is calculated according to the wheeledge torque and the driving shaft torque; S4, the value of the current rotating speed is changed and the step S1-S3 are repeated; S5, the value of the first variable is changed and the steps S1-S4 arerepeated; and S6, the value of a second variable of the brake pedal is changed and repeating the steps S1-S5 are repeated; and the first variable and the second variable are the brake pedal opening degree and the treading spe