This application provides a motor controller, a powertrain, and an electric vehicle. The motor controller is configured to output a drive current or a heating current to an asynchronous motor, and both the drive current and the heating current are three-phase currents. A waveform of each phase current of the drive current is a sine wave, and the drive current is used to control the asynchronous motor to output torque. A waveform of each phase current of the heating current is a square wave or a step wave, and the heating current is used to control the torque output by the asynchronous motor to be zero, and heat a winding of the asynchronous motor. Heat generated by the heating current on the winding of the asynchronous motor heats a power battery via a heat conduction apparatus. The motor controller provided in this application adjusts a waveform of the heating current, to reduce thermal stress on a switch component in the motor controller, to prolong a service life of the switch component. When switch components used by the motor controller have a same heat resistance capability, heating power can be further increased.


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    Title :

    MOTOR CONTROLLER, POWERTRAIN, AND ELECTRIC VEHICLE


    Additional title:

    MOTORSTEUERUNG, ANTRIEBSSTRANG UND ELEKTROFAHRZEUG
    DISPOSITIF DE COMMANDE DE MOTEUR, GROUPE MOTOPROPULSEUR ET VÉHICULE ÉLECTRIQUE


    Contributors:
    LU CHUNHONG (author) / TANG ZHENGYI (author) / BAI LIFEI (author)

    Publication date :

    2025-06-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY



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