The invention discloses an energy control method for an automobile exhaust temperature difference power generation weak hybrid power system, which comprises the following steps of: firstly, estimating the average hot end temperature and cold end temperature of all thermoelectric devices by utilizing a fitting model according to the rotating speed and torque of an engine at the current moment; estimating the maximum output power of the automobile exhaust thermoelectric power generation system by combining the characteristic curve of the thermoelectric device; secondly, the load demand power is compared with the estimated maximum output power of the automobile exhaust thermoelectric power generation system to obtain power deviation, the SOC value of the lithium battery at the moment serves as input of a fuzzy controller, and a power adjusting coefficient is obtained according to a set fuzzy rule; preliminarily distributing the output power of the lithium battery and the automobile exhaust temperature difference power generation system by combining the current load demand power; and finally, maximum power tracking output is carried out on the automobile exhaust thermoelectric power generation system, and initial distribution power of the lithium battery and the automobile exhaust thermoelectric power generation system is corrected, so that energy optimization management of the automobile exhaust thermoelectric power generation hybrid power system is realized.

    本发明公开了一种汽车尾气温差发电弱混合动力系统能量控制方法,首先,针对当前时刻的发动机转速和转矩利用拟合模型估计所有热电器件的平均热端温度和冷端温度,结合热电器件的特性曲线预估汽车尾气温差发电系统的最大可输出功率;其次,将负载需求功率与汽车尾气温差发电系统的预估最大可输出功率比较得到功率偏差,并以此时的锂电池SOC值作为模糊控制器的输入,根据设定的模糊规则得到功率调节系数,结合当前负载需求功率初步分配锂电池和汽车尾气温差发电系统的输出功率;最后,对汽车尾气温差发电系统进行最大功率跟踪输出,并对锂电池和汽车尾气温差发电系统的初步分配功率进行校正,从而实现汽车尾气温差发电混合动力系统的能量优化管理。


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    Titel :

    Energy control method for weak hybrid power system for thermoelectric power generation of automobile exhaust


    Weitere Titelangaben:

    一种汽车尾气温差发电弱混合动力系统能量控制方法


    Beteiligte:
    QUAN RUI (Autor:in) / GUO HAIFENG (Autor:in) / QUAN SHULANG (Autor:in) / HUANG ZIKANG (Autor:in) / WANG JUNHUI (Autor:in) / LIANG WENLONG (Autor:in) / ZHANG JIAN (Autor:in) / CHANG YUFANG (Autor:in) / HUANG WENCONG (Autor:in) / TAN BAOHUA (Autor:in)

    Erscheinungsdatum :

    2022-07-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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 / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein



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