本文選題：燃料電池　切入點(diǎn)：測(cè)試系統(tǒng)　出處：《電子科技大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：燃料電池具有能量密度高、操作溫度低、對(duì)環(huán)境無污染、可快速啟動(dòng)及維護(hù)方便等優(yōu)點(diǎn),在交通運(yùn)輸及分布式發(fā)電應(yīng)用方面具有巨大的潛力,可有效解決能源危機(jī)與環(huán)境污染問題。然而燃料電池本身涉及復(fù)雜的化工反應(yīng),內(nèi)部反應(yīng)機(jī)理復(fù)雜,為了研究燃料電池的輸出特性,縮短燃料電池的研發(fā)周期,提高燃料電池控制精度和使用壽命,降低研發(fā)成本,燃料電池測(cè)試系統(tǒng)的研發(fā)是必需的,具有重要的科研價(jià)值和工程意義。因此,本文設(shè)計(jì)并開發(fā)專用的燃料電池測(cè)試系統(tǒng),主要完成以下工作。首先,簡(jiǎn)單介紹了燃料電池工作原理,明確了燃料電池工作過程。同時(shí)對(duì)燃料電池工作時(shí)的“可逆”開路電壓和開路電壓影響因素進(jìn)行分析,確定溫度、壓力和濕度影響燃料電池輸出性能。在介紹了被測(cè)燃料電池電堆后,確定燃料電池電堆操作條件,明確燃料電池測(cè)試系統(tǒng)功能需求。其次,根據(jù)燃料電池測(cè)試系統(tǒng)功能需求,確定燃料電池測(cè)試系統(tǒng)硬件組成。按照氫氣、空氣、冷卻水、電氣和控制回路對(duì)測(cè)試系統(tǒng)進(jìn)行模塊劃分;在確定測(cè)試系統(tǒng)組成模塊后,對(duì)各硬件模塊進(jìn)行詳細(xì)設(shè)計(jì),根據(jù)被測(cè)燃料電池電堆功率等級(jí),選擇各模塊執(zhí)行部件,并整理出各模塊監(jiān)測(cè)與控制信號(hào);同時(shí)對(duì)測(cè)試系統(tǒng)數(shù)據(jù)采集與控制系統(tǒng)進(jìn)行設(shè)計(jì),選擇合適的控制器、數(shù)據(jù)采集卡和傳感器,并對(duì)系統(tǒng)進(jìn)行IO分配。然后,根據(jù)測(cè)試系統(tǒng)硬件模塊劃分,提出測(cè)試系統(tǒng)相應(yīng)模塊軟件需求,利用LabVIEW軟件設(shè)計(jì)各模塊控制軟件。在確定控制模塊輸入輸出后,設(shè)計(jì)各模塊控制流程圖,在控制流程圖的基礎(chǔ)上完成程序框圖設(shè)計(jì);同時(shí),設(shè)計(jì)了良好的人機(jī)交互界面,可以方便的實(shí)現(xiàn)參數(shù)設(shè)置,燃料電池工作流程查看和數(shù)據(jù)觀測(cè)。最后,在測(cè)試系統(tǒng)硬件平臺(tái)上完成本文所設(shè)計(jì)的測(cè)試系統(tǒng)軟件功能驗(yàn)證。在介紹了測(cè)試系統(tǒng)組成和執(zhí)行部件后,確定測(cè)試系統(tǒng)開機(jī)與關(guān)機(jī)流程,以一維單節(jié)分區(qū)電池為測(cè)試對(duì)象,完成不同溫度和不同壓力下燃料電池輸出特性測(cè)試,測(cè)試結(jié)果表明本文所設(shè)計(jì)測(cè)試系統(tǒng)軟件具有良好的實(shí)用性和可靠性,可完成不同工況下燃料電池輸出特性測(cè)試。
[Abstract]:Fuel cells have the advantages of high energy density, low operating temperature, no pollution to the environment, quick start-up and easy maintenance, and have great potential in transportation and distributed power generation applications. However, the fuel cell itself involves complex chemical reaction and complex internal reaction mechanism. In order to study the output characteristics of fuel cell and shorten the research and development cycle of fuel cell, To improve the control precision and service life of fuel cell, reduce the cost of research and development, the research and development of fuel cell test system is necessary, which has important scientific research value and engineering significance. Therefore, this paper designs and develops a special fuel cell test system. The main work is as follows. Firstly, the working principle of fuel cell is briefly introduced, and the working process of fuel cell is clarified. At the same time, the influence factors of "reversible" open circuit voltage and open circuit voltage are analyzed, and the temperature is determined. Pressure and humidity affect the output performance of fuel cell. After introducing the fuel cell stack, the operating conditions of the fuel cell stack are determined, and the functional requirements of the fuel cell test system are defined. Secondly, according to the functional requirements of the fuel cell test system, According to hydrogen, air, cooling water, electrical and control circuits, the test system is divided into modules. After determining the components of the test system, the hardware modules are designed in detail. According to the power level of the fuel cell stack under test, the executive parts of each module are selected, and the monitoring and control signals of each module are sorted out. At the same time, the data acquisition and control system of the test system is designed, and the appropriate controller is selected. Data acquisition card and sensor, and I / O distribution of the system. Then, according to the hardware module division of the test system, the software requirements of the test system are put forward. The control software of each module is designed by using LabVIEW software. After determining the input and output of the control module, the control flowchart of each module is designed, and the program block diagram is designed on the basis of the control flowchart, at the same time, a good man-machine interface is designed. Parameter setting, fuel cell workflow view and data observation can be realized conveniently. Finally, the function verification of the test system software designed in this paper is completed on the hardware platform of the test system. Determine the test system startup and shutdown flow, take one-dimensional single-section battery as the test object, complete the fuel cell output characteristic test under different temperature and different pressure, The test results show that the software designed in this paper has good practicability and reliability and can be used to test the output characteristics of fuel cells under different operating conditions.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP311.52;TM911.4

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