This application relates to the field of electric vehicle technologies, and discloses an electric drive system, a powertrain, a heating method, and an electric vehicle. The electric drive system includes an inverter circuit, a direct current-direct current conversion circuit, and a controller. An input end of the inverter circuit is connected to an input end of the electric drive system, and an output end of the inverter circuit is connected to three-phase motor windings of an electric excitation synchronous motor. An input end of the direct current-direct current conversion circuit is connected to the input end of the electric drive system, and an output end of the direct current-direct current conversion circuit is connected to an excitation winding of the electric excitation synchronous motor. The inverter circuit converts a direct current into three-phase currents and provides the three-phase currents for the three-phase motor windings. The direct current-direct current conversion circuit performs direct current conversion on the direct current and provides the direct current for the excitation winding. The controller is configured to control the inverter circuit and the direct current-direct current conversion circuit, so that a temperature of a power battery pack is greater than or equal to a first temperature threshold. In this solution, a heating apparatus does not need to be disposed when the power battery pack is heated, thereby reducing costs and saving space.


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    Title :

    ELECTRIC DRIVE SYSTEM, DRIVETRAIN, HEATING METHOD, AND ELECTRIC VEHICLE


    Additional title:

    ELEKTRISCHES ANTRIEBSSYSTEM, ANTRIEBSSTRANG, HEIZVERFAHREN UND ELEKTROFAHRZEUG
    SYSTÈME D'ENTRAÎNEMENT ÉLECTRIQUE, CHAÎNE CINÉMATIQUE, PROCÉDÉ DE CHAUFFAGE ET VÉHICULE ÉLECTRIQUE


    Contributors:
    LI HAOJIE (author) / WU CHAOQIANG (author) / LIN MENGXUAN (author)

    Publication date :

    2024-04-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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