This application provides an oil-cooled motor rotor in a groove, a motor, a powertrain, and an electric vehicle. The motor rotor includes a motor shaft, at least one end plate, at least one rotor iron core, and a plurality of magnetic steels. The one rotor iron core includes a plurality of magnetic steel grooves. Each magnetic steel groove is configured to fasten at least one magnetic steel. At least one magnetic steel groove includes a plurality of bumps. The bump enables the magnetic steel groove to form a gap with the magnetic steel. The gap is configured to form an internal flow channel of the one rotor iron core and is configured to communicate with an oil groove of the one end plate. Cooling oil is in direct contact with the magnetic steel to cool the magnetic steel, thereby improving cooling efficiency of the rotor iron core.


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    Title :

    OIL-COOLED MOTOR ROTOR IN GROOVE, MOTOR, POWERTRAIN, AND ELECTRIC VEHICLE


    Contributors:
    HOU JINING (author) / SUN TAO (author) / FU FANGYUAN (author) / WANG SIXUE (author) / GUO QIQI (author)

    Publication date :

    2025-07-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / 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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