The invention relates to the technical field of new energy automobiles, and discloses a power assisting device for an electric automobile braking system. The device comprises a brake pump push rod, apower booster and a power booster push rod, a diaphragm partition plate is arranged in the power booster, and the diaphragm partition plate divides an inner cavity of the power booster into a high-pressure chamber and a negative-pressure chamber which are mutually closed. According to the power assisting device for the electric automobile braking system, even if power supply is abnormal, the pressure difference between a negative pressure cylinder and a high pressure cylinder can be used for driving the brake pump push rod and the diaphragm partition plate to move, then braking equipment is driven to brake, and it is guaranteed that the braking system can normally operated any time. In addition, after the pressure in the high pressure cylinder and the negative pressure cylinder reaches a preset value, a hose in a peristaltic pump is in a flattened state under the action of the negative pressure of the negative pressure cylinder, so that the peristaltic pump does not additionally consume power, and when the pressure in the negative pressure cylinder and the high pressure cylinder does not reach the preset value, the peristaltic pump can normally work, and the pressure in the negative pressure cylinder and the high pressure chamber reaches the preset value.

    本发明涉及新能源汽车技术领域,且公开了一种用于电动汽车制动系统的助力装置,包括制动泵推杆、助力器和助力器推杆,所述助力器内设有膜片隔板,所述膜片隔板将助力器的内腔分割成相互封闭的高压室和负压室。该用于电动汽车制动系统的助力装置,即使在供电异常的时候,也可以利用负压缸和高压缸内的压力差驱动制动泵推杆和膜片隔板移动,进而驱动制动设备制动,确保无能何时制动系统都能正常运行,还有,在高压缸和负压缸内压力达到预设值后,在负压缸负压的作用下使蠕动泵内软管呈压平的状态,使蠕动泵不额外消耗动力,在负压缸和高压缸内压力未达到预设值时,蠕动泵可正常工作,使负压缸和负压室内压力达到预设值。


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    Title :

    Power assisting device for electric automobile braking system


    Additional title:

    一种用于电动汽车制动系统的助力装置


    Contributors:
    LI QIANG (author)

    Publication date :

    2020-12-18


    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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