The invention discloses an electric vehicle retarding control method which comprises the following steps: judging whether a retarding control mode activation condition is met or not, and if so, activating a retarding control mode; in the retarding control mode, the vehicle speed is adjusted and set through a vehicle speed adjusting button arranged on a vehicle control panel; according to the current vehicle speed and the set vehicle speed, the motor control system controls the motor to enter a rotating speed control mode or quit the rotating speed control mode to enter a torque control mode, so that the vehicle runs at the vehicle speed not higher than the set vehicle speed, and the motor outputs braking torque in the rotating speed control mode; in the torque control mode, the motor stops outputting the braking torque; and judging whether a retarding control mode exit condition is met or not, and if yes, exiting the retarding control mode. According to the vehicle retarding control method for the electric vehicle, the motor can be controlled through the motor control system when the electric vehicle goes downhill for a long time and a long distance under the state that the electric quantity is sufficient, the retarding function is achieved, and it is guaranteed that the vehicle stably runs at a certain constant vehicle speed.

    本发明公开了一种电动汽车车辆缓速控制方法,包括:判断是否满足缓速控制模式激活条件,若满足则激活缓速控制模式;在缓速控制模式下,通过设在车辆控制面板上的车速调节按钮调节设定车速;根据当前车速与设定车速的大小,电机控制系统控制电机进入转速控制模式,或退出转速控制模式进入转矩控制模式,以使车辆以不高于设定车速的车速行驶,在转速控制模式下电机输出制动扭矩;在转矩控制模式下电机停止输出制动扭矩;判断是否满足缓速控制模式退出条件,若满足则退出缓速控制模式。本发明的电动汽车车辆缓速控制方法,可在电动汽车电量充足状态下长时间长距离下坡时,通过电机控制系统控制电机,实现缓速功能,保证车辆在某恒定车速下稳定行驶。


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    Title :

    Retarding control method for electric automobile


    Additional title:

    电动汽车车辆缓速控制方法


    Contributors:
    CAO FENGMING (author) / CHENG DONGDONG (author) / GUO YUXIANG (author) / YANG HONGZHEN (author) / LIU XUEBING (author) / LI XUEZENG (author)

    Publication date :

    2023-02-03


    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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