The invention discloses an electric vehicle auxiliary braking control method and system and an electric vehicle. The method comprises the steps that in response to the situation that a brake pedal of the electric vehicle is triggered, expected deceleration is obtained according to the pedal travel value of the brake pedal, and actual deceleration is obtained according to a vehicle speed signal; if it is judged that the pedal travel value is larger than the preset pedal travel threshold value and the vehicle speed corresponding to the vehicle speed signal is larger than the preset vehicle speed threshold value, a first expected braking distance, an actual braking distance and a second expected braking distance are determined according to the current vehicle speed corresponding to the vehicle speed signal, the expected deceleration, the actual deceleration and the longitudinal acceleration; and if it is judged that the first expected braking distance is smaller than the actual braking distance and the second expected braking distance through the preset braking distance threshold value, the reverse driving force is determined according to the whole vehicle mass, the expected deceleration, the actual deceleration and the longitudinal acceleration. In this way, when the braking force is insufficient, the vehicle is controlled to conduct auxiliary braking according to the reverse driving force, and the driving safety is improved.

    本申请公开了一种电动汽车辅助制动控制方法、系统及电动汽车,方法包括:响应于电动汽车的制动踏板被触发,根据制动踏板的踏板行程值获取期望减速度,并根据车速信号获取实际减速度;若判断踏板行程值大于预设的踏板行程阈值且车速信号对应的车速大于预设的车速阈值,则根据车速信号对应的当前车速分别与期望减速度、实际减速度以及纵向加速度确定第一期望制动距离、实际制动距离以及第二期望制动距离;若判断第一期望制动距离以预设的制动距离阈值分别小于实际制动距离以及第二期望制动距离,则根据整车质量、期望减速度、实际减速度以及纵向加速度确定反向驱动力。如此,在制动力不足时控制车辆根据反向驱动力进行辅助制动,提高了驾驶安全性。


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    Titel :

    Electric vehicle auxiliary braking control method and system and electric vehicle


    Weitere Titelangaben:

    电动汽车辅助制动控制方法、系统及电动汽车


    Beteiligte:
    LIU FUQING (Autor:in) / TAO ZHE (Autor:in) / BI CHENLIANG (Autor:in) / FAN PENG (Autor:in) / CAI RUNJIA (Autor:in)

    Erscheinungsdatum :

    29.03.2024


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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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