Study on Dynamic Performance of Pure Electric Vehicle with Hybrid Power Supply

摘要

Aiming at the problem that battery can not satisfy the demand of instantaneous peak power of pure electric vehicle, in this paper, the structure of hybrid power supply is the super capacitor and the bidirectional DC/DC series and then connected in parallel with the battery. Fuzzy control strategy module is built based on fuzzy controller. The fuzzy control strategy module is added to the vehicle model by the method of joint simulation and the simulation is carried out. The simulation results are as follows: maximum climb slope is 35.36%, maximum speed can be reached 146Km/h, acceleration time of 0~100km/h is 12.29s, driving range is 312 km and it is proved that the fuzzy control strategy can effectively allocate between the power of the storage battery and the super capacitor.