The invention discloses a rear-drive suspension system of an electric automobile. The rear-drive suspension system comprises a rear auxiliary frame; the rear auxiliary frame comprises a front cross beam, a rear cross beam, a left longitudinal beam and a right longitudinal beam; a driving motor assembly is arranged in an area defined by the front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam; a left suspension assembly and a right suspension assembly are arranged on the two sides of the front end of the driving motor assembly respectively; a rear suspension bracket is arranged in the middle of the rear end of the driving motor assembly; and a rear suspension assembly is arranged at the extending end of the rear suspension bracket. The left suspension assembly, the right suspension assembly, the rear suspension assembly and the driving motor assembly form a centroid arrangement, and the center of form of the centroid arrangement basically coincides with the centroid of the driving motor assembly, so that it can be guaranteed that the three suspension assemblies limit and restrain transient large-torque impact of a motor at the same time; the swing displacement of the driving motor assembly is controlled within a small range, vibration impact caused by swing of the driving motor assembly is reduced, and the comfort of vibration noise in a vehicle is effectively improved.

    本发明公开了一种电动汽车后驱悬置系统,包括后副车架;所述后副车架包括前横梁、后横梁、左纵梁和右纵梁;所述前横梁、后横梁、左纵梁和右纵梁围成的区域中设有驱动电机总成;所述驱动电机总成前端的两侧分别设有左悬置总成和右悬置总成;所述驱动电机总成后端的中部设有后悬置支架;所述后悬置支架的伸出端上设有后悬置总成;本发明通过左悬置总成、右悬置总成、后悬置总成与驱动电机总成构成质心布置,其形心基本与驱动电机总成的质心基本重合,这样可保证三个悬置总成同时对电机的瞬态大扭矩冲击进行限位抑制,将驱动电机总成的摆动位移控制在很小的范围内,降低了驱动电机总成摆动导致的振动冲击,有效提升车内振动噪声舒适性。


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    Title :

    Rear-drive suspension system of electric automobile


    Additional title:

    一种电动汽车后驱悬置系统


    Contributors:
    WANG ZHENGYA (author) / WANG FEI (author) / CUI LEI (author) / WU YONGCHANG (author) / WANG SHANYOU (author)

    Publication date :

    2021-05-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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