Provided is a driving device for rear wheels of a 4 wheel driving electric vehicle, which can minimize a loss in the drive power during 4-wheel driving and can prevent a loss in the drive power during 2-wheel driving by preventing a load based on a differential device from being generated. The driving device includes a first motor (11) for generating rotational power, a motor inner shaft (16) installed within the first motor (11) while passing through the first motor (11) and having one end connected to the rear wheels, a reduction gear group (12, 13, 14, 15) connected to the first motor (11), a differential device (17) including a right differential gear (17b) connected to the motor inner shaft (16) and a differential case (17a) connected to the reduction gear group (12, 13, 14, 15), a disconnector input shaft (18) having one end connected to a left differential gear (17c) of the differential device (17) and the other end connected to or disconnected from a hub (19), a wheel speed sensor (20) sensing a wheel rotating speed, a controller (21) outputting a signal for connecting the disconnector input shaft (18) to the hub (19), a motor driver (22) connected to the controller (21), a second motor (23) connected to the motor driver (22), a shift fork (24) connected to the second motor (23), and a sleeve (25) connected to the shift fork (24) and connecting/disconnecting the disconnector input shaft (18) and the hub (19) to/from each other.


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    Title :

    Driving device for rear wheels of 4 wheel driving electric vehicle


    Additional title:

    Antriebsvorrichtung für Hinterräder von elektrischen Fahrzeugen mit Vierradantrieb
    Dispositif de commande pour roues arrière de véhicule électrique à quatre roues motrices


    Contributors:

    Publication date :

    2015-05-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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