质子交换膜燃料电池输出特性分析与健康状态监测研究
发布时间：2018-08-09 12:47
【摘要】：质子交换膜燃料电池具有发电零污染，系统启动温度低，比功率高等特点，目前除了可广泛应用于便携式设备以外，还可用在轿车、公共汽车领域及联供系统中，是燃料电池技术中的研究热点。然而，随着燃料电池发电技术的发展，出现了一些瓶颈问题，如何针对操作条件对电堆实现最优控制，优化电堆输出性能已经成为亟待解决的热点问题。 本文结合V-I特性法和EIS法对水冷型质子交换膜燃料电池的输出性能分析展开了研究，研究操作条件变化对电堆输出特性及阻抗参数的影响规律，并设计了一种基于电堆阻抗参数特征的健康状态监测方法，具体研究内容如下： （1）针对质子交换膜燃料电池发电原理及特性，综合分析电堆电化学反应过程，构建质子交换膜燃料电池等效电路，，并对阻抗模型进行了简化处理以便于后期数据拟合，同时基于机理研究分析了电堆各特性段阻抗参数对输出性能的影响。 （2）根据机理研究结果，并针对实验研究需要，设计水冷型质子交换膜燃料电池堆输出性能实验系统及上位机检测控制软件，可实现对电堆的操作条件控制，电堆运行时的电压、电流及阻抗数据检测。 （3）针对水冷型质子交换膜燃料电池，进行变操作条件的V-I特性实验及EIS实验，针对电堆极化段、欧姆段和浓差段不同特性段，结合V-I特性法和EIS法对实验结果进行分析总结，获得操作条件变化对电堆内部水热状况，以及输出性能的影响规律。 （4）基于实验研究成果设计了一种质子交换膜燃料电池堆输出性能水健康状态监测方法，在Matlab中进行了算法的仿真验证，结果表明监测方法的有效性。
[Abstract]:Proton exchange membrane fuel cells (PEMFC) have the advantages of zero pollution, low start-up temperature, high specific power and so on. At present, proton exchange membrane fuel cells can be widely used not only in portable devices, but also in the fields of cars, buses and joint supply systems. It is a research hotspot in fuel cell technology. However, with the development of fuel cell power generation technology, there are some bottleneck problems. How to realize the optimal control of the stack according to the operating conditions, and how to optimize the stack output performance has become a hot issue to be solved urgently. In this paper, the output performance of water-cooled proton exchange membrane fuel cells is studied by using V-I characteristic method and EIS method. The influence of operating conditions on the output characteristics and impedance parameters of the reactor is studied. A health state monitoring method based on impedance parameters is designed. The main contents are as follows: (1) according to the principle and characteristics of proton exchange membrane fuel cell (PEMFC) generation, the electrochemical reaction process of the stack is comprehensively analyzed. The equivalent circuit of proton exchange membrane fuel cell (PEMFC) was constructed and the impedance model was simplified to facilitate the later data fitting. At the same time, based on the mechanism study, the influence of impedance parameters of each characteristic section on the output performance is analyzed. (2) according to the results of mechanism study, and according to the need of experimental research, The output performance experiment system of water-cooled proton exchange membrane fuel cell (PEM) fuel cell stack and the upper computer detection and control software are designed to control the operating conditions of the stack and the voltage of the stack when it is in operation. (3) for water-cooled proton exchange membrane fuel cells, V-I characteristic experiments and EIS experiments under variable operating conditions were carried out. Combined with V-I characteristic method and EIS method, the experimental results were analyzed and summarized. (4) based on the experimental results, a water health monitoring method for proton exchange membrane fuel cell (PEMFC) stack output performance is designed and simulated in Matlab. The results show that the method is effective.
【学位授予单位】：中国计量学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM911.4
本文编号：2174123
[Abstract]:Proton exchange membrane fuel cells (PEMFC) have the advantages of zero pollution, low start-up temperature, high specific power and so on. At present, proton exchange membrane fuel cells can be widely used not only in portable devices, but also in the fields of cars, buses and joint supply systems. It is a research hotspot in fuel cell technology. However, with the development of fuel cell power generation technology, there are some bottleneck problems. How to realize the optimal control of the stack according to the operating conditions, and how to optimize the stack output performance has become a hot issue to be solved urgently. In this paper, the output performance of water-cooled proton exchange membrane fuel cells is studied by using V-I characteristic method and EIS method. The influence of operating conditions on the output characteristics and impedance parameters of the reactor is studied. A health state monitoring method based on impedance parameters is designed. The main contents are as follows: (1) according to the principle and characteristics of proton exchange membrane fuel cell (PEMFC) generation, the electrochemical reaction process of the stack is comprehensively analyzed. The equivalent circuit of proton exchange membrane fuel cell (PEMFC) was constructed and the impedance model was simplified to facilitate the later data fitting. At the same time, based on the mechanism study, the influence of impedance parameters of each characteristic section on the output performance is analyzed. (2) according to the results of mechanism study, and according to the need of experimental research, The output performance experiment system of water-cooled proton exchange membrane fuel cell (PEM) fuel cell stack and the upper computer detection and control software are designed to control the operating conditions of the stack and the voltage of the stack when it is in operation. (3) for water-cooled proton exchange membrane fuel cells, V-I characteristic experiments and EIS experiments under variable operating conditions were carried out. Combined with V-I characteristic method and EIS method, the experimental results were analyzed and summarized. (4) based on the experimental results, a water health monitoring method for proton exchange membrane fuel cell (PEMFC) stack output performance is designed and simulated in Matlab. The results show that the method is effective.
【学位授予单位】：中国计量学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM911.4
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