基于示范运营的燃料电池汽车性能衰退分析方法

Performance degradation analysis methods for fuel cell vehicles based on demonstration operations

燃料电池汽车商业化示范运营项目旨在研究燃料电池汽车的商业化应用前景,并在经济性、可靠性和寿命等方面对燃料电池车辆进行改进,是促进燃料电池汽车商业化发展的重要途径。燃料电池系统的使用寿命是制约燃料电池汽车商业化发展的主要因素,因此通过示范运营项目的研究工作,分析燃料电池系统在道路工况下的性能衰减过程,阐明燃料电池系统性能衰退机制,是提高燃料电池汽车使用寿命的重要基础。本文通过对相关文献的探讨,回顾了燃料电池汽车示范运营项目的研究进展,介绍了燃料电池系统性能衰退的分析方法,指出了示范运营项目的主要研究内容主要包括运行工况分析和对电堆的性能衰退分析。重点介绍了数据驱动和基于模型的分析方法,同时对用于燃料电池电压分析的极化曲线,进行了稳态极化特性拟合的公式推导,并指出稳态极化特性拟合的结果只适用于特定的运行环境,不具有广泛的适用性。最后,本文总结了燃料电池汽车示范运营项目研究工作的重点和分析方法的发展趋势,为基于示范运营的燃料电池研究工作提供参考。

The fuel cell vehicle commercialization demonstration operation project aims to study the commercial application prospect of fuel cell vehicles and improve fuel cell vehicles in terms of economy,reliability,and life.It is an important way to promote the commercial development of fuel cell vehicles.The fuel cell system's service life is the main factor restricting the commercial development of fuel cell vehicles.Therefore,it is important to improve the service life of fuel cell vehicles,analyze the performance attenuation process of fuel cell systems under road working conditions,and clarify the performance degradation mechanism of fuel cell systems through the research work of the demonstration operation project.On the basis of the discussions of related studies,this paper reviews the research progress of the fuel cell vehicle demonstration operation project,introduces methods to analyze fuel cell system performance degradation,and points out that the main research contents of the demonstration operation project mainly include operating condition and performance degradation analyses of fuel cell stacks.The data-driven and model-based analysis methods are introduced emphatically.The function to fit the steady-state polarization characteristics is deduced from the polarization curve used in fuel cell voltage analysis.The fitting results of the steady-state polarization characteristics are only applicable to specific operating environments and have no wide applicability.Finally,this paper summarizes the emphases of the fuel cell vehicle demonstration operation project research and the development trend of the analysis methods to provide a reference for fuel cell research based on demonstration operation.