Research on Energy Recovery Optimization of Electric Vehicles based on Driving Scenarios

In order to reduce the vehicle energy consumption and improve the driving range, this paper takes the energy recovery system of a pure electric vehicle as the research object, compares the vacuum assisted braking system (EVP) and intelligent electro-hydraulic braking system (ibooster) of traditional electric vehicles, optimizes the braking energy recovery torque strategies of different systems, and analyzes the energy recovery rates of the two braking systems. On the basis of the analysis of Chinese operating conditions (CLTC-P), the actual driving scenario (R-cycle) road conditions are introduced, and the vehicle energy consumption and energy recovery rate are compared through simulation analysis and bench test. The results show that the energy recovery rate of ibooster under CLTC-P and R-cycle conditions is 1.4% and 1.1% higher than that of EVP, and the power consumption of the vehicle per 100 km is reduced by 0.7% and 0.6% respectively, achieving the purpose of reducing the energy consumption of the vehicle.