The invention discloses a driving torque control method and system during the downhill of an electric vehicle, a vehicle and a storage medium. The driving torque control method comprises the steps that S1, whether a torque control function is in an activated state during downhill is judged; s2, if so, information is acquired; s3, a first torque Trq1 is calculated; s4, when the whole vehicle is not in a sliding state or a braking state in the current calculation period and the first torque Trq1 is smaller than or equal to 0, the step S6 is executed, and otherwise, the step S5 is executed; s5, if the whole vehicle is in a sliding state or a braking state in the current calculation period and Trq1 is greater than or equal to Trq1thr, the step S7 is executed, and otherwise, the step S6 is is executed; s6, when the whole vehicle enters a sliding state or a braking state and the torque distribution function during downhill is in a Standby state, the method returns to S2 at the moment; s7, when the whole vehicle is not in the sliding or braking state, a second torque Trq2 is calculated; and s8, a third torque Trq3 is determined and the third torque Trq3 is sent to the torque execution system; and the method returns to S2. When the electric vehicle is in an acceleration or constant speed state and in a downhill state, the torque requirement of a driver can be met with less electric energy consumption.

    本发明公开了一种电动汽车下坡时的驱动扭矩控制方法、系统、车辆及存储介质,包括:S1,判断下坡时扭矩控制功能是否处于激活状态;S2,若是,则获取信息;S3,计算第一扭矩Trq1;S4,当前一个计算周期整车不处于滑行状态或制动状态,且第一扭矩Trq1≤0时,则进入S6,反之进入S5;S5,当前一个计算周期整车处于滑行状态或制动状态,且Trq1≥Trq1thr,则进入S7,反之进入S6;S6,当整车进入滑行状态或制动状态,下坡时的扭矩分配功能处于Standby状态,此时返回S2;S7,当整车不处于滑行或制动状态时,计算第二扭矩Trq2;S8,确定第三扭矩Trq3并发送给扭矩执行系统;并返回S2。本发明能够使电动汽车处于加速或匀速状态且处于下坡状态时,以更少的电能消耗满足驾驶员的扭矩需求。


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    Title :

    Driving torque control method and system during downhill of electric vehicle and vehicle


    Additional title:

    电动汽车下坡时的驱动扭矩控制方法、系统及车辆


    Contributors:
    CHEN JISONG (author) / XIONG CHAO (author) / DU BIAO (author) / CHEN SHENG (author)

    Publication date :

    2021-12-24


    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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