The invention provides a power assembly, a control method for a motor controller and an electric automobile, the power assembly comprises the motor controller and a driving motor, the motor controller comprises three bridge arms which are connected in parallel, each bridge arm comprises an upper bridge arm switch tube and a lower bridge arm switch tube, one end of each bridge arm is used for being connected with one end of a direct-current power source and one end of a power battery, the other end of each bridge arm is used for being connected with the other end of the power battery, bridge arm midpoints of the three bridge arms are used for being connected with a three-phase winding of a driving motor, and the bridge arm midpoint of one of the three bridge arms is used for being connected with the other end of the direct-current power source. In response to the situation that the direct current power supply is switched from outputting direct current to stopping outputting direct current, the upper bridge arm switch tube of one of the other two bridge arms in the three bridge arms is switched on, the lower bridge arm switch of the other bridge arm is switched on, and the power battery is used for supplying power to the winding of one phase and the winding of the other phase, so that the tooth beating sound is weakened, and the tooth beating efficiency is improved. And the NVH characteristic of the electric automobile is improved.

    本申请提供了一种动力总成、用于电机控制器的控制方法以及电动汽车,该动力总成包括电机控制器和驱动电机,电机控制器包括相并联的三个桥臂,每个桥臂包括上桥臂开关管和下桥臂开关管,每个桥臂的一端用于连接直流电源的一端和动力电池的一端、另一端用于连接该动力电池的另一端,三个桥臂的桥臂中点用于连接驱动电机的三相绕组,三个桥臂中一个桥臂的桥臂中点用于连接直流电源的另一端。响应于直流电源由输出直流电切换至停止输出直流电,三个桥臂中另外两个桥臂的其中一个桥臂的上桥臂开关管导通且另一个桥臂的下桥臂开关导通,动力电池用于向该一相绕组和该另一相绕组供电,从而减弱打齿声响,改善电动汽车的NVH特性。


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    Titel :

    Power assembly, control method for motor controller and electric vehicle


    Weitere Titelangaben:

    动力总成、用于电机控制器的控制方法以及电动汽车


    Beteiligte:
    ZHANG BEN (Autor:in) / DUAN GUOCHAO (Autor:in) / FAN LITAO (Autor:in)

    Erscheinungsdatum :

    2023-12-15


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern



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