The invention discloses an instantaneous power matching and comprehensive thermal management method for a fuel cell/lithium battery hybrid power system, which comprises the following steps of: establishing a dynamic model of the fuel cell/lithium battery hybrid power system, and obtaining parameters such as output voltage and output power of a fuel cell and a lithium battery through the dynamic model of the hybrid power system; a fuel cell serves as a main power source, a lithium battery serves as auxiliary power, a fuzzy-PID control module is established according to load power and the SOC of the lithium battery with the purpose that the instantaneous output power of the fuel cell is within the optimal operation range, and an instantaneous power matching model of the fuel cell/lithium battery hybrid power system is constructed; a load power curve is used as input, and optimal instantaneous power distribution of the fuel cell/lithium battery is realized through energy matching of the fuzzy-PID control module; on the premise that the power requirement is met, a hybrid power system heat management framework is established by additionally arranging a combustion chamber, a heat exchanger and other components, topological structure change and comprehensive heat management research are conducted on a fuel cell system, and therefore the overall heat efficiency of the hybrid power system is improved.

    本发明公开了一种燃料电池/锂电池混合动力系统瞬时功率匹配及综合热管理方法,建立燃料电池和锂电池混合动力系统的动态模型,通过该混合动力系统动态模型得到燃料电池和锂电池的输出电压、输出功率等参数;以燃料电池作为主动力源,锂电池作为辅助动力,以燃料电池瞬时输出功率在最佳运行范围内为目标,根据负载功率与锂电池SOC建立模糊‑PID控制模块,构建燃料电池/锂电池混合动力系统瞬时功率匹配模型;以负载功率曲线为输入,通过模糊‑PID控制模块的能量匹配,实现燃料电池/锂电池的最佳瞬时功率分配;在满足功率需求的前提下,通过增加燃烧室、换热器等部件建立混合动力系统热管理架构,对燃料电池系统进行拓扑结构变化与综合热管理研究,以实现混合动力系统整体热效率的提高。


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    Title :

    Instantaneous power matching and comprehensive thermal management method for fuel cell/lithium battery hybrid power system


    Additional title:

    一种燃料电池/锂电池混合动力系统瞬时功率匹配及综合热管理方法


    Contributors:
    HE ZHENZONG (author) / FU YAO (author) / JIANG XINYU (author) / JIAN HUI (author) / ZHAO WEIWEI (author) / MAO JUNKUI (author) / LIANG FENGLI (author)

    Publication date :

    2024-04-12


    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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