The invention relates to an electric vehicle self-adaptive energy recovery control method and an electric vehicle, and is characterized in that the control method comprises the following steps: on the basis of an initial braking demand torque TBrk obtained by a VCU through a vehicle speed and a braking opening look-up table during braking, respectively introducing a whole vehicle mass electric braking compensation coefficient k1 and a slope electric braking compensation coefficient k2, and obtaining the braking energy feedback torque suitable for the current working condition through comprehensive calculation according to the formula TRegn = TBrk * k1 * k2. The electric braking compensation coefficient of the whole vehicle quality is obtained according to the whole vehicle quality. The current gradient value is obtained through a gradient signal collecting device, the electric braking compensation coefficient of the gradient is obtained according to a ramp gradient signal, and dynamic compensation is conducted on braking torque values under different load working conditions, the same vehicle speed and the same brake pedal opening degree through the calculated whole vehicle mass electric braking compensation coefficient and the gradient electric braking compensation coefficient. Therefore, on the premise that the braking comfort and the braking distance are not affected, the braking energy recovery proportion is increased, mechanical braking abrasion is reduced, and the driving mileage is increased.

    本发明涉及一种电动车辆自适应能量回收控制方法及电动汽车,其特征在于,所述控制方法基于VCU通过制动时车速和制动开度查表获取的初始制动需求转矩TBrk,又分别引入整车质量电制动补偿系数k1和坡度电制动补偿系数k2,通过公式TRegn=TBrk*k1*k2综合计算得出适合当前工况的制动能量回馈扭矩。本发明根据整车质量获得整车质量的电制动补偿系数;通过坡度信号采集装置获取当前坡度值,根据坡道坡度信号获得坡度的电制动补偿系数,通过计算的整车质量电制动补偿系数、坡度电制动补偿系数对不同载荷工况同车速和同制动踏板开度下的制动转矩值进行动态补偿,从而在不影响制动舒适性和制动距离的前提下,提高制动能量回收占比,减小机械制动磨损、增加续驶里程。


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    Title :

    Electric vehicle self-adaptive energy recovery control method and electric vehicle


    Additional title:

    电动车辆自适应能量回收控制方法及电动汽车


    Contributors:
    XIAO LINHAI (author) / XIAO FEI (author) / FAN PENG (author) / FENG CHENXU (author) / GAO JIN (author)

    Publication date :

    2021-06-25


    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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