At this stage,the power battery pack of domestic electric vehicles is gradually developing towards high voltage and large rate.However,due to the variety of models and performance parameters of domestic charging piles,it is impossible to guarantee that the charging needs of vehicles can be met.In this paper,the DC charging system and DC charging process are introduced.And combined with the existing DC charging technology of electric vehicles,the performance of charging piles is proposed to be added to the vehicle charging control strategy.Based on the principle of maximum charging power,the timing of vehicle step-down charging is analyzed,and five charging piles with different performance on the market are selected,and the impact of this strategy on vehicle charging time is analyzed by using the simulation platform.The simulation results show that the proposed strategy can shorten the charging time of the vehicle to a certain extent,which has certain reference significance for optimizing the charging function of the electric vehicle.
维普
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