The invention relates to the technical field of electric vehicles, in particular to a power-off method and device for a new energy vehicle, and the method comprises the steps: obtaining the relative speed and the relative distance between the vehicle and an obstacle after a to-be-recognized object in front of the vehicle is recognized as the obstacle; obtaining a collision duration according to the relative speed and the relative distance; if the relative distance is not larger than a distance threshold value and the collision duration is not larger than a collision duration threshold value, sending a power-off instruction to a power battery of the vehicle, and disconnecting the power battery. According to the method, the new energy vehicle recognizes the collision danger in advance, the power failure is executed before the vehicle collides, the reliability of the power failure operation is improved, the safety of the new energy vehicle is improved, and the situation that the automobile is still in a dangerous state in the period of detecting the collision signal and executing the power failure operation is avoided.

    本发明涉及电动车技术领域,尤其涉及一新能源汽车的断电方法及装置,该方法包括:在将车辆前方的待识别物体识别为障碍物后,获取所述车辆与所述障碍物之间的相对速度和相对距离;根据所述相对速度和所述相对距离,得到碰撞时长;若所述相对距离不大于距离阈值且所述碰撞时长不大于碰撞时长阈值,则发送下电指令至所述车辆的动力电池,并断开所述动力电池。该方法实现了新能源汽车提前识别碰撞危险,并在车辆发生碰撞前执行断电,提高断电操作的可靠性,增加新能源汽车的安全性,避免车辆在检测碰撞信号执行断电操作的周期内仍处于危险状态情况发生。


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    Titel :

    Power-off method and device for new energy vehicle


    Weitere Titelangaben:

    一种新能源汽车的断电方法及装置


    Beteiligte:
    CHEN YULONG (Autor:in) / LIU SHUANG (Autor:in) / WU KE (Autor:in) / ZHU LIBIN (Autor:in) / PENG YANGMING (Autor:in)

    Erscheinungsdatum :

    2022-02-08


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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