Abstract:For the quantitative analysis to braking efficiency and energy storage capacity of four-wheel drive electric vehicle hydraulic braking energy regeneration system,regenerative braking power system was simulated separately.Hydraulic secondary element was operated in the form of pump. The mathematical modeling of the accumulator was built.The kinematics analysis was carried on when the car was braked,then the AMESim simulation model was built.Due to the accumulator minimum working pressure was the key to influence the accumulator performance parameters, compared analysis under the accumulator with different minimum working pressures was done.The simulation results show that when the accumulator minimum working pressure is 17 MPa,it is guaranteed four-wheel drive electric vehicle braking hydraulic regenerative braking system has higher efficiency, at the same time,higher accumulator performance can be obtained.