The invention discloses a pure electric vehicle DCDC control method capable of adjusting the voltage in real time, and the method comprises the steps: electrifying a whole vehicle, enabling the DCDC through a VCU, and controlling the DCDC to work at different reference working voltages through the VCU according to the voltage of a storage battery; and detecting the state of the vehicle, and correcting the reference working voltage through fuzzy control according to the running state of the vehicle so as to adjust the working voltage of the DCDC and realize charging and discharging or electric quantity maintenance of the low-voltage storage battery. According to the method, the power utilization state of the power battery and the DCDC working efficiency are fully considered while the power utilization requirement of the whole vehicle is met, and the DCDC working efficiency is improved as much as possible, so that the power utilization efficiency of the whole vehicle is improved, and energy is saved.

    本发明公开了一种电压实时调节的纯电动汽车DCDC控制方法,整车上电,VCU使能DCDC,VCU根据蓄电池电压大小不同控制DCDC工作在不同的基准工作电压;检测车辆状态,根据车辆行驶状态通过模糊控制对所述基准工作电压修正,从而调整DCDC的工作电压,实现低压蓄电池充放电或电量保持。本发明在满足整车用电需求的同时,充分考虑动力电池用电状态和DCDC工作效率,尽可能提高DCDC工作效率,从而提高了整车用电效率,节约能源。


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    Title :

    Pure electric vehicle DCDC control method capable of adjusting voltage in real time


    Additional title:

    一种电压实时调节的纯电动汽车DCDC控制方法


    Contributors:
    PENG HONGTAO (author) / DU JIA (author) / YU SHAOPENG (author) / DING CONG (author) / YANG BO (author)

    Publication date :

    2021-07-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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