The invention relates to an energy management control method for a hybrid electric vehicle. The method can ensure that energy consumption is lower under the condition that the vehicle is lack of electricity. The method comprises the steps of determining total torque required by a driver based on accelerator pedal opening; selecting an alternative torque discrete interval of the engine from a preset optimal efficiency torque interval of the engine based on the rotating speed of the engine; obtaining a motor alternative torque discrete interval based on the driver demand total torque and the engine alternative torque discrete interval; determining a power assembly alternative equivalent power loss discrete interval based on the engine alternative torque discrete interval, the motor alternative torque discrete interval, the engine rotating speed and the motor rotating speed; based on the vehicle speed and the delta(SOC), determining a corresponding equivalent factor from a pre-stored corresponding relation calibration table; determining a target engine torque and a target motor torque which enable the total energy consumption of the vehicle to be minimum based on the power assembly alternative equivalent power loss discrete interval and the equivalent factor, and outputting the target engine torque and the target motor torque to an engine control unit and a motor control unit for control.

    本方案涉及一种混合动力汽车能量管理控制方法,该方法可以在车辆亏电情况下确保能耗较低。其包括:基于油门踏板开度确定驾驶员需求总扭矩;基于发动机转速从预设的发动机最优效率扭矩区间内选取发动机备选扭矩离散区间;基于驾驶员需求总扭矩和发动机备选扭矩离散区间得到电机备选扭矩离散区间;基于发动机备选扭矩离散区间、电机备选扭矩离散区间、发动机转速和电机转速确定动力总成备选等效功率损失离散区间;基于车速以及△SOC,从预先存储的对应关系标定表中确定对应的等效因子;基于动力总成备选等效功率损失离散区间和等效因子确定使车辆总能耗最小的目标发动机扭矩和目标电机扭矩输出给发动机控制单元和电机控制单元进行控制。


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    Title :

    Hybrid electric vehicle energy management control method


    Additional title:

    一种混合动力汽车能量管理控制方法


    Contributors:
    LIU KE (author) / GAO BAIJUN (author) / NIE XIANGHONG (author) / LIU XIAOLONG (author)

    Publication date :

    2021-09-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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