A method of controlling limp home drive of a hybrid vehicle is provided. The method includes: when the hybrid vehicle enters a limp home driving mode, engaging an engine clutch and disconnecting a main relay; determining whether the hybrid starter generator fails; and performing pulse width modulation (PWM) control for constant voltage control on the back electromotive force of the motor by the motor control unit when the hybrid starter generator fails. When the hybrid vehicle enters the limp home driving mode and the starter generator fails, the motor control unit performs constant voltage control on the back electromotive force of the motor so that the constant voltage is supplied as an input voltage to the high-voltage component, thereby ensuring that the high-voltage component is protected and can operate.

    本发明提供控制混合动力车辆的跛行回家驱动的方法。所述方法包括:当混合动力车辆进入跛行回家驱动模式时,接合发动机离合器并且断开主继电器;确定混合动力起动发电机是否发生故障;以及当混合动力起动发电机发生故障时,通过电动机控制单元对电动机的反电动势进行用于恒定电压控制的脉冲宽度调制PWM控制。当混合动力车辆进入跛行回家驱动模式而起动发电机发生故障时,电动机控制单元对电动机的反电动势进行恒定电压控制,使得恒定电压作为输入电压提供给高压部件,因此确保高压部件受到保护并且可以工作。


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    Title :

    Method of controlling limp home drive of hybrid vehicle


    Additional title:

    控制混合动力车辆的跛行回家驱动的方法


    Contributors:

    Publication date :

    2022-12-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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