An electric vehicle sliding energy recovery control method comprises the following steps: establishing a whole vehicle longitudinal kinetic equation; acquiring current vehicle and environment parameters; obtaining a reference horizontal acceleration, and according to the obtained parameters and the longitudinal kinetic equation, obtaining the horizontal acceleration of the whole vehicle; obtainingthe current actual acceleration of the whole vehicle; and outputting an energy recovery strategy value, carrying out difference operation on the obtained reference horizontal acceleration and the current actual acceleration of the whole vehicle, if the difference is greater than a preset threshold in a whole vehicle controller, judging that the current whole vehicle is in a downhill state and reaches a state capable of carrying out energy recovery, and outputting the energy recovery strategy value. Under the condition that hardware equipment is not added, vehicle downhill working condition recognition is newly added, when the vehicle is in the downhill working condition, the vehicle sliding energy recovery strength is improved, and the larger the slope is, the larger the sliding energy recovery strength is, so that the utilization rate of vehicle energy is improved.

    一种电动汽车滑行能量回收控制方法,包括以下步骤:建立整车纵向动力学方程;获取当前整车与环境参数;获取参考水平加速度,获取的参数所述的纵向动力学方程,获得整车的水平加速度;获取当前整车实际加速度;输出能量回收策略值,将获取的参考水平加速度、当前整车实际加速度进行差值运算,若大于整车控制器内预设的阈值,判断当前整车处于下坡状态且达到可进行能量回收的状态,输出能量回收策略值。本发明在不增加硬件设备的情况下,新增整车下坡工况识别,当整车处于下坡工况时,提高整车滑行能量回收力度,且坡度越大,滑行能量回收力度越大,从而提高整车能量的利用率。


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    Title :

    Electric vehicle sliding energy recovery control method


    Additional title:

    一种电动汽车滑行能量回收控制方法


    Contributors:
    YE WEN (author) / WANG CHANGJIANG (author)

    Publication date :

    2020-07-24


    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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