The invention provides a driving motor efficiency improving method based on a road spectrum. The driving motor efficiency improving method comprises: acquiring the road spectrum and vehicle information; calculating a motor output torque Ttq (t) and a motor rotating speed n (t) corresponding to each working condition point based on the road spectrum and the vehicle information; dividing the working interval of the motor into a plurality of MAP subareas according to the torque and the rotating speed; calculating the sum of energy of all working condition points in each MAP sub-region; finding an MAP subarea energy and a large target area under a driving working condition or a feedback working condition; and changing the motor to enable the high-efficiency area of the motor MAP to move to the target area. According to the method, a motor MAP is divided into MAP sub-regions according to the rotating speed and the torque, the working point of the motor is obtained according to the road spectrum and the vehicle information, the energy of each MAP sub-region is calculated, and the energy distribution diagram of the motor is obtained; and finally, the high-efficiency region and the high-energy region of the motor are matched and optimized to improve the average efficiency of the motor under the road spectrum so as to improve the driving range of the automobile.

    本发明提供了一种基于路谱的驱动电机效率提升方法,包括:获取路谱以及车辆信息;基于路谱和车辆信息,计算每个工况点对应的电机输出扭矩Ttq(t)和电机转速n(t);将电机工作区间按扭矩和转速划分成多个MAP子区域;计算每个MAP子区域内所有工况点的能量和;找到驱动工况或回馈工况下MAP子区域能量和大的目标区域;改变电机,使电机MAP的高效区向目标区域移动。本发明将电机MAP根据转速和扭矩划分成各个MAP子区域,根据路谱以及车辆信息,得到电机的工作点,计算每个MAP子区域的能量,得到电机的能量分布图;最后将电机高效率区域与高能量区域匹配优化,以提升该路谱下电机的平均效率,从而提升汽车的续驶里程。


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    Title :

    Driving motor efficiency improving method based on road spectrum


    Additional title:

    基于路谱的驱动电机效率提升方法


    Contributors:
    SANG CAIWEI (author) / XU FEI (author) / LI HAIBO (author) / ZHAO ZHENGLAN (author) / XIE YU (author)

    Publication date :

    2021-08-31


    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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