The invention relates to a hydraulic oil pump, a hybrid power system, a hybrid electric vehicle and a control method thereof, and belongs to the technical field of vehicles. A hybrid power system of the hybrid electric vehicle comprises a VCU, a motor controller and a hydraulic oil pump, and when it is detected that the hybrid electric vehicle runs in a pure electric or series connection or brake energy recovery mode, the VCU sends a first control instruction to the motor controller; the motor controller controls an oil pump motor of the hydraulic oil pump to work, and hydraulic oil is conveyed to the cooling oil way through first oil pump inner and outer rotors. When it is detected that the vehicle runs in the parallel connection or cruise direct drive or cruise power generation mode, the VCU sends a second control instruction to the motor controller; the motor controller controls an oil pump electronic clutch in the hydraulic oil pump to be coupled, controls an oil pump motor to work, conveys hydraulic oil to the cooling oil way through the first oil pump inner and outer rotors and conveys hydraulic oil to the pressure oil way through the second oil pump inner and outer rotors. Only one hydraulic oil pump is needed in a hybrid power system of the hybrid power automobile, and the integration degree of the hybrid power system is greatly improved.

    本申请涉及一种液压油泵、混合动力系统、混动汽车及其控制方法,属于车辆技术领域。混动汽车的混合动力系统包括VCU、电机控制器和液压油泵,当检测到处于纯电或串联或制动能量回收模式行驶时,VCU向电机控制器发送第一控制指令;电机控制器控制液压油泵的油泵电机工作,通过第一油泵内外转子向冷却油路输送液压油;当检测到处于并联或巡航直驱或巡航发电模式行驶时,VCU向电机控制器发送第二控制指令;电机控制器控制液压油泵中的油泵电子离合器耦合,并控制油泵电机工作,通过第一油泵内外转子向冷却油路输送液压油以及通过第二油泵内外转子向压力油路输送液压油。采用本申请混动汽车的混合动力系统中仅需要一台液压油泵,大大提高了其集成度。


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    Title :

    Hydraulic oil pump, hybrid power system, hybrid power automobile and control method of hybrid power automobile


    Additional title:

    一种液压油泵、混合动力系统、混动汽车及其控制方法


    Contributors:
    HUANG KECHUANG (author) / FANG SHENGMENG (author) / GAO GUIFEN (author) / LUO WENQING (author) / TIAN XIAOQIANG (author)

    Publication date :

    2023-09-01


    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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