The invention provides a control method and device for a dual-motor hybrid power system of a hybrid electric vehicle. The dual-motor hybrid power system comprises an engine, a first motor, a second motor, a transmission and a motor clutch. The first motor is connected with the engine, an input shaft of the transmission is connected with the engine, the first motor and the second motor, and the hybrid electric vehicle comprises a first gear shifting clutch which is connected when the hybrid electric vehicle is in a non-power downshift mode. The method comprises the steps that when the dual-motor hybrid power system is in a non-power downshift mode, in response to a gear shifting speed regulation request in the mode, the slip frequency of a first gear shifting clutch and a second motor request torque for requesting a second motor to output are obtained; if the slip frequency is larger than the slip frequency threshold value, the braking intervention torque is determined according to the slip frequency; and according to the second motor request torque and the braking intervention torque, at least controlling the second motor output torque. When the hybrid electric vehicle is in the non-power downshift mode, the rotating speed can be increased quickly.

    本申请提供一种混合动力汽车的双电机混动系统的控制方法、装置。双电机混动系统包括发动机、第一电机、第二电机、变速器和电机离合器。第一电机与发动机连接,变速器的输入轴连接发动机、第一电机和第二电机,混合动力汽车包括第一换挡离合器,在混合动力汽车处于非动力降挡模式时接合。方法包括:当双电机混动系统处于非动力降挡模式,响应于该模式下的换挡调速请求,获取第一换挡离合器的滑差和请求第二电机输出的第二电机请求扭矩;若滑差大于滑差阈值,根据滑差,确定制动干预扭矩;根据第二电机请求扭矩和制动干预扭矩,至少控制第二电机输出扭矩。本申请可以在混合动力汽车处于非动力降挡模式时,较快提升转速。


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    Title :

    Control method and device for dual-motor hybrid system of hybrid electric vehicle


    Additional title:

    混合动力汽车的双电机混动系统的控制方法、装置


    Contributors:
    JING JUNCHAO (author) / LIU YIQIANG (author) / HUANG WEISHAN (author) / ZUO BOTAO (author) / YANG GUIKANG (author)

    Publication date :

    2023-12-05


    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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