The invention discloses a pure electric double-motor four-wheel-drive vehicle driving control method which is mainly characterized in that a front motor in double motors is set to be an asynchronous motor, a rear motor in the double motors is set to be a synchronous motor, and according to this, two economic lines and power lines are divided in advance according to efficiency curves of the front and rear motors and a vehicle; after the vehicle is started, the current driving mode is determined, and if the current driving mode is an economic mode, the vehicle is only driven by a rear motor; if the mode is one of a normal mode, a comfortable mode and a motion mode, the current driver demand torque, an economic line and a power line are combined to jointly decide a four-wheel-drive working mode, such as only rear drive or four-wheel drive, or output torque of front and rear motors is distributed according to a set proportion to participate in the proportion. According to the method, the driving control of the pure electric four-wheel-drive vehicle under different driving working conditions is finely distinguished, and the four-wheel-drive switching modes under different working conditions and the torque distribution of the front motor and the rear motor are correspondingly optimized, so that the driving reliability, the safety and the stability of the pure electric four-wheel-drive vehicle are ensured.

    本发明公开了一种纯电动双电机四驱车辆驱动控制方法,主要构思在于,设定双电机中的前电机为异步电机,后电机为同步电机,并由此提出,预先根据前后电机与车的效率曲线,划分出两条经济线和动力线;在车辆启动后,确定当前的驾驶模式,若为经济模式,则仅由后电机驱动;若为正常、舒适或运动模式三者之一,则结合当前的驾驶员需求扭矩、经济线及动力线共同决策四驱的工作方式,如仅后驱、或四轮驱动、或按既定比例分配前后电机的输出扭矩参与占比。本发明针对纯电动四驱车在不同驾驶工况下的驱动控制进行了精细化的区分并有对应性地优化了不同工况时的四驱切换方式以及前后双电机的扭矩分配,由此确保了纯电四驱车辆的驾驶可靠性及安全稳定性。


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    Title :

    Driving control method for pure electric double-motor four-wheel-drive vehicle


    Additional title:

    纯电动双电机四驱车辆驱动控制方法


    Contributors:
    YANG ZHAOFEI (author) / PANG YANHONG (author) / WU GONGMIN (author) / WANG RUNSHEN (author)

    Publication date :

    2024-11-19


    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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