摘要空冷型质子交换膜燃料电池的电堆温度对电堆性能影响最大，电堆温度的控制直接影响电堆的性能指标,所以对电堆温度进行及时准确的控制非常必要。本文实现了基于LabVIEW的质子交换膜燃料电池温度控制，采用PID控制器，使电池稳定工作在最佳温度。首先，阐述了PEMFC的发电系统组成、电池结构、工作原理，并对影响其发电性能的主要因素进行了分析。其次通过实验得到不同室温和电流状态下燃料电池工作的最佳温度值，提出了PEMFC温控系统的硬件设计方案，对控制过程进行了分析，完成了系统软件设计。最后运用LabVIEW完成了温控系统的仿真与分析，与实际运行的PEMFC电堆连接，仿真结果和实际结果表明本文设计的PEMFC的温控系统满足设计要求，能够使电池在最佳温度稳定工作。67659

毕业论文关键词  质子交换膜燃料电池，LabVIEW，VISA，温度

毕业设计说明书（论文）外文摘要

Title   LabVIEW–based research and design of the PEMFC temperature control system

Abstract

The performance of Air-Cooling PEMFC stack is mainly affected by its temperature, therefore accurate and timely control of stack temperature is very necessary. LabVIEW-based PEMFC stack temperature was controlled by using PID controller, so that the working temperature is stable around the optimum temperature. First on, the composing of generating system, the battery structure and the working principle of the PEMFC is elaborated, the main factors to affect its power generation performance is analyzed. Then, the value of the optimal temperature of the fuel cell under room temperature and the current state is obtained by experiments. Besides, the design of PEMFC temperature control system, including hardware, software is shown in detail, and the control process is analyzed either. Finally, the temperature control system based on the LabVIEW Simulation is designed and analyzed. The simulation results show that he design of the PEMFC temperature control system meets the design requirements, and allows the battery to work at the best temperature stability.

Keywords:  PEMFC, LabVIEW ,VISA ，temperature

目  次

1  引言 1

1.1  质子交换膜燃料电池的发展前景和研究意义 1

1.2 质子交换膜燃料电池温度控制的研究现状 2

1.3 电堆温度对PEMFC性能的影响 3

1.4 LabVIEW简介 3

2  PEMFC发电系统 5

2.1  PEMFC发电系统组成 5

2.2  PEMFC的结构 6

2.3  PEMFC的工作原理 6

2.4  PEMFC的特点 8

2.5  影响PEMFC发电性能的主要因素 9

2.6  温度对PEMFC电池性能影响的机理 9

2.7 本章小结 10

3  PEMFC温度控制策略 10

3.1  PEMFC最佳工作温度 10

3.2温控系统硬件设计 14

3.2.1温度测量电路 14

3.2.2 温度控制系统 15

3.3 数据采集 20

3.4 本章小结 20

4 基于LABVIEW的PEMFC温度控制系统