The invention provides a limp control system and method for a dual-motor hybrid electric vehicle, and relates to the technical field of new energy automobiles, the system comprises a generator, a clutch, a P2 motor, an AMT gearbox, a P3 motor, a P2 motor controller, a P3 motor controller and a high-voltage battery. In the parking state, when a high-voltage battery breaks down, an engine is controlled to work at a certain rotating speed, a P2 motor is driven to rotate synchronously, a certain direct-current bus voltage is provided for a P3 motor through back electromotive force generated by high-speed rotation of the P2 motor, and the P3 motor is controlled to output a specific torque according to the opening degree of an accelerator. Therefore, limp starting and low-speed moving of the vehicle can be achieved without high voltage, and traffic jam and safety accidents caused by the fact that the vehicle cannot run after a dangerous road condition fault are avoided.

    本发明提供一种双电机混合动力汽车的跛行控制系统及方法,涉及新能源汽车技术领域,该系统包括发电机、离合器、P2电机、AMT变速箱、P3电机、P2电机控制器、P3电机控制器、高压电池。在停车状态下,当高压电池故障时,控制发动机以一定转速工作,带动P2电机同步转动,利用P2电机高速转动产生的反电动势为P3电机提供一定的直流母线电压,并根据油门开度控制P3电机输出特定扭矩,进而实现无高压时车辆也能跛行起步和低速挪车,避免车辆在危险路况故障后无法行车造成的交通堵塞和安全事故。


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    Title :

    Limp control system and method for dual-motor hybrid electric vehicle


    Additional title:

    一种双电机混合动力汽车的跛行控制系统及方法


    Contributors:
    MA MEI (author) / HUANG SHUO (author) / LI XIAOMEI (author)

    Publication date :

    2024-03-15


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



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