The invention discloses an electric automobile braking system which comprises a ball screw pair, a brake pedal connected to the first end of the ball screw pair and a brake oil pump system connected to the second end of the ball screw pair, and the ball screw pair comprises a plurality of balls, a ball nut, at least two ball blocking devices and a circulator. The ball nut is provided with an axial through hole used for leading in the lead screw, spiral ball rolling grooves are formed in the outer circumferential face of the lead screw and the inner circumferential face of the axial through hole, the ball rolling grooves are matched to form a spiral raceway, the circulator is inserted into the ball nut, at least one circulating raceway is arranged on the circulator, and the circulating raceway is communicated with the lead screw. And the two ball stoppers are respectively and fixedly arranged on the spiral raceway between the two end parts of the circulating raceway, so that the spiral raceway between the two ball stoppers and the circulating raceway form a closed loop for rolling balls to flow. According to the electric automobile braking system, the higher braking response speed is achieved, the requirement for higher-level automatic driving is met, and the energy recovery efficiency is high.

    本发明公开一种电动汽车制动系统,其包括滚珠丝杠副、连接在滚珠丝杠副第一端的制动踏板以及连接在滚珠丝杠副第二端的制动油泵系统,滚珠丝杠副包括若干滚珠、滚珠螺母、至少两个挡珠器以及循环器,滚珠螺母具有用于通入丝杠的轴向通孔,丝杠的外周面和轴向通孔的内周面均设有螺旋状的滚珠滚动槽,滚珠滚动槽配合形成螺旋滚道,循环器插设在滚珠螺母内,循环器上设有至少一个循环滚道,两个挡珠器分别固定设置在循环滚道的两个端部之间的螺旋滚道上,以使两个挡珠器之间的螺旋滚道和循环滚道形成用于滚珠流转的闭合回路。在本申请所提供的电动汽车制动系统中,具有更快的制动响应速度,满足更高级别的自动驾驶,能量回收效率高。


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    Title :

    Electric automobile braking system


    Additional title:

    一种电动汽车制动系统


    Contributors:
    LI JINGYU (author) / LI YIQIAN (author) / CHEN XUANYUN (author)

    Publication date :

    2024-01-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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