The invention discloses a vehicle, a micro-hybrid system and a DCDC converter control method of the micro-hybrid system. A DCDC converter comprises two working modes, namely a boost mode and a buck mode. The DCDC converter control method of the micro-hybrid system comprises the following steps: acquiring a current working condition of the micro-hybrid system; the current working conditions at least comprise a parking power-on working condition, a vehicle driving working condition and a vehicle braking working condition; if the micro-hybrid system is in the shutdown power-on working condition, controlling the DCDC converter to execute a boost mode; the DCDC converter outputs a first target voltage value; the first target voltage value is the output voltage of the first battery module; if the micro-hybrid system is in the vehicle driving working condition, the DCDC converter is controlled to execute a voltage reduction mode; the DCDC converter outputs a second target voltage value; if the micro-hybrid system is in the vehicle braking working condition, the DCDC converter is controlled to execute a voltage reduction mode; the DCDC converter outputs a third target voltage value. According to the technical scheme, the working reliability, the energy recovery efficiency and the energy utilization rate of the micro-mixing system can be improved.

    本发明公开了一种车辆、微混系统及其DCDC转换器控制方法,DCDC转换器包括两种工作模式:升压模式和降压模式;微混系统的DCDC转换器控制方法包括:获取微混系统的当前工况;当前工况至少包括停车上电工况、车辆行驶工况和车辆制动工况;若微混系统处于停车上电工况下,控制DCDC转换器执行升压模式;DCDC转换器输出第一目标电压值;第一目标电压值为第一电池模块的输出电压;若微混系统处于车辆行驶工况下,控制DCDC转换器执行降压模式;DCDC转换器输出第二目标电压值;若微混系统处于车辆制动工况下,控制DCDC转换器执行降压模式;DCDC转换器输出第三目标电压值。本发明的技术方案,可以提高微混系统的工作可靠性,以及能量回收效率和能量利用率。


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    Title :

    Vehicle, micro-hybrid system and DCDC converter control method thereof


    Additional title:

    一种车辆、微混系统及其DCDC转换器控制方法


    Contributors:
    ZHANG HUALONG (author) / ZHOU LIBIN (author) / GUAN JING (author) / SHI YANBO (author) / XIE FEI (author) / REN YUE (author) / HOU TIANWEI (author) / WANG KUO (author) / CHU CHEN (author) / WANG XUEFENG (author)

    Publication date :

    2024-02-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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