【摘要】：質(zhì)子交換膜燃料電池具有發(fā)電零污染，系統(tǒng)啟動溫度低，比功率高等特點，目前除了可廣泛應(yīng)用于便攜式設(shè)備以外，還可用在轎車、公共汽車領(lǐng)域及聯(lián)供系統(tǒng)中，是燃料電池技術(shù)中的研究熱點。然而，隨著燃料電池發(fā)電技術(shù)的發(fā)展，出現(xiàn)了一些瓶頸問題，如何針對操作條件對電堆實現(xiàn)最優(yōu)控制，優(yōu)化電堆輸出性能已經(jīng)成為亟待解決的熱點問題。 本文結(jié)合V-I特性法和EIS法對水冷型質(zhì)子交換膜燃料電池的輸出性能分析展開了研究，研究操作條件變化對電堆輸出特性及阻抗參數(shù)的影響規(guī)律，并設(shè)計了一種基于電堆阻抗參數(shù)特征的健康狀態(tài)監(jiān)測方法，具體研究內(nèi)容如下： （1）針對質(zhì)子交換膜燃料電池發(fā)電原理及特性，綜合分析電堆電化學(xué)反應(yīng)過程，構(gòu)建質(zhì)子交換膜燃料電池等效電路，，并對阻抗模型進行了簡化處理以便于后期數(shù)據(jù)擬合，同時基于機理研究分析了電堆各特性段阻抗參數(shù)對輸出性能的影響。 （2）根據(jù)機理研究結(jié)果，并針對實驗研究需要，設(shè)計水冷型質(zhì)子交換膜燃料電池堆輸出性能實驗系統(tǒng)及上位機檢測控制軟件，可實現(xiàn)對電堆的操作條件控制，電堆運行時的電壓、電流及阻抗數(shù)據(jù)檢測。 （3）針對水冷型質(zhì)子交換膜燃料電池，進行變操作條件的V-I特性實驗及EIS實驗，針對電堆極化段、歐姆段和濃差段不同特性段，結(jié)合V-I特性法和EIS法對實驗結(jié)果進行分析總結(jié)，獲得操作條件變化對電堆內(nèi)部水熱狀況，以及輸出性能的影響規(guī)律。 （4）基于實驗研究成果設(shè)計了一種質(zhì)子交換膜燃料電池堆輸出性能水健康狀態(tài)監(jiān)測方法，在Matlab中進行了算法的仿真驗證，結(jié)果表明監(jiān)測方法的有效性。
[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.
【學(xué)位授予單位】：中國計量學(xué)院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM911.4

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