The invention relates to a control method for cooling and lubricating a power assembly of a new energy automobile, which comprises the following steps that: a motor controller MCU (Microprogrammed Control Unit) performs comprehensive judgment according to the current states of the power assembly, such as oil temperature, motor rotating speed, motor torque, motor stator winding temperature, accelerator opening and the like, and then directly sends an instruction for driving an electronic oil pump; the electronic oil pump works at the rotating speed meeting the conditions, and therefore cooling and lubricating of the electric drive assembly are achieved. According to the technical scheme, the system state is fully considered, the working reliability of the system is guaranteed, the electronic oil pump controller is integrated into the motor controller, the required flow does not need to be calculated in advance, the target rotating speed does not need to be calculated according to the required flow, the communication transmission time is shortened, and the system response is improved. The method is easy to implement, the principle is simple, the purpose of optimization can be achieved through calibration, the working reliability of the electric drive assembly can be improved, and the method is easy to apply to the whole vehicle.

    本发明涉及一种新能源汽车动力总成冷却润滑的控制方法,电机控制器MCU根据当前动力总成的状态,如油温、电机转速、电机扭矩、电机定子绕组温度、油门开度等综合判断,然后直接发出驱动电子油泵的指令,使电子油泵工作在满足条件的转速下,从而实现电驱动总成的冷却润滑。本技术方案充分考虑系统状态,保证系统工作可靠性,采用电子油泵控制器集成到电机控制器中,不需要预先计算需求流量,也不需要将根据需求流量计算目标转速,减少了通讯传输时间,提高系统响应。本发明较易实施,原理简单且通过标定就能达到优化的目的,可以提高电驱动总成工作可靠性,易于在整车中应用。


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    Title :

    Control method for cooling and lubricating power assembly of new energy automobile


    Additional title:

    一种新能源汽车动力总成冷却润滑的控制方法


    Contributors:
    CHEN FEI (author) / FANG ZHIQIN (author) / GUO HAIBAO (author) / CUI GANG (author) / CHEN WEI (author) / YIN LIANGJIE (author)

    Publication date :

    2024-01-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS



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