The invention provides a center motor integrated two-gear electric axle. The center motor integrated two-gear electric axle comprises a hollow motor, a hollow transmission device and a differential mechanism which are coaxially arranged, and the motor is located between driving wheels on the two sides. A multi-stage planetary gear transmission mechanism is adopted in the transmission device, and the transmission device comprises a sun wheel, a planet carrier, a first planet wheel, a low-gear gear ring, a second planet wheel, a high-gear gear ring, a low-gear brake component, a high-gear brake component and an operating device. According to a power transmission path in the center motor integrated two-gear electric axle, a rotor of the motor outputs power to the sun wheel, the power is transmitted to a differential case through the public planet carrier, and the power is transmitted to hubs of the driving wheels on the two sides through two semiaxes of the differential mechanism. The operating device drives the low-gear brake component and the high-gear brake component to achieve gear shifting. The center motor integrated two-gear electric axle has the advantages of being compact in structure and small in occupied space and facilitating battery arrangement. The two-gear design is adopted, and the different requirements of the highest speed and maximum gradeability of a whole car for the transmission ratio can be met through the car.


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    Title :

    Center motor integrated two-gear electric axle


    Contributors:
    ZHENG SIFA (author) / DING NENGGEN (author) / LYU YINGCHAO (author)

    Publication date :

    2015-09-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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