The invention discloses a motor controller, a power assembly and an electric vehicle, and relates to the technical field of electric vehicles. The motor controller comprises an inverter circuit, a direct current-direct current conversion circuit and a controller. The input end of the inverter circuit is connected with the input end of the motor controller, and the output end of the inverter circuit is connected with a three-phase motor winding of the electro-magnetic synchronous motor. The input end of the DC-DC conversion circuit is connected with the input end of the electric drive system, and the output end of the DC-DC conversion circuit is connected with the excitation winding of the electrically excited synchronous motor. The inverter circuit converts the direct current into three-phase current and provides the three-phase current to a three-phase motor winding. The direct current-direct current conversion circuit performs direct current conversion on the direct current and then provides the direct current to the excitation winding. The controller is used for controlling the inverter circuit and the DC-DC conversion circuit, so that the temperature of the power battery pack is larger than or equal to a first temperature threshold value. According to the scheme, a heating device does not need to be arranged when the power battery pack is heated, cost is reduced, and space is saved.

    本申请公开了一种电机控制器、动力总成及电动车辆,涉及电动车辆技术领域。电机控制器包括逆变电路、直流‑直流变换电路和控制器。逆变电路的输入端连接电机控制器的输入端,逆变电路的输出端连接电励磁同步电机的三相电机绕组。直流‑直流变换电路的输入端连接电驱动系统的输入端,直流‑直流变换电路的输出端连接电励磁同步电机的励磁绕组。逆变电路将直流电转换为三相电流并提供给三相电机绕组。直流‑直流变换电路将直流电进行直流变换后提供给励磁绕组。控制器用于控制逆变电路和直流‑直流变换电路,以使动力电池组的温度大于或等于第一温度阈值。利用本方案在加热动力电池组时不需设置加热装置,降低了成本并节省了空间。


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    Title :

    Electric driving system, power assembly, heating method and electric vehicle


    Additional title:

    一种电驱动系统、动力总成、加热方法及电动车辆


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

    Publication date :

    2023-11-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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