储能科学与技术 ›› 2020, Vol. 9 ›› Issue (6): 1885-1889.doi: 10.19799/j.cnki.2095-4239.2020.0277

• 储能系统与工程 • 上一篇    下一篇

空冷型质子交换膜燃料电池系统效率的实验研究

翟俊香(), 何广利, 许壮, 刘聪敏   

  1. 北京低碳清洁能源研究院，北京 102211
  • 收稿日期:2020-08-21 修回日期:2020-08-28 出版日期:2020-11-05 发布日期:2020-10-28
  • 作者简介:联系人：翟俊香（1982—），女，博士，研究方向为氢能领域的燃料电池、氢气纯化，E-mail：junxiang.zhai.a@chnenergy.com.cn。
  • 基金资助:
    国家重点专项(2019YFB1505000┫—燃料电池车用氢气纯化技术)

Experimental study on system efficiency of air-cooled proton exchange membrane fuel cell

Junxiang ZHAI(), Guangli HE, Zhuang XU, Congmin LIU   

  1. National Institute of Clean and-Low-Carbon Energy, Beijing 102211, China
  • Received:2020-08-21 Revised:2020-08-28 Online:2020-11-05 Published:2020-10-28

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摘要：

以空冷型质子交换膜燃料电池系统为研究对象，通过实验测试，获得了全功率下的系统效率。实验结果显示：在燃料电池系统全功率范围内，系统效率随系统功率变化呈现抛物线形状。随着系统功率提高，系统效率快速上升，达到最高效率后缓慢降低，然后基本趋于平缓。系统在额定功率下的效率约为47%，系统最高效率约为56%，出现在系统50%额定功率点附近。本文设计了一个双堆结构空冷型燃料电池系统。基本设计理念是燃料电池系统含有两个电堆，而且双堆串联进气即将前一个电堆的阳极尾端氢气，经过气水分离器后引入后一个电堆。实验结果显示：在相同排氢频率条件下，与相同单电池数量的单堆系统相比，双堆结构燃料电池系统发电性能基本没有变化，在高功率区间发电性能略有提升；双堆结构燃料电池系统效率有明显增加，系统最高效率达60.23%。在低功率发电区间，系统效率大概增加了2%～4%；在高功率发电区间，系统效率大概增加了约5%。该双堆结构燃料电池系统具有良好的实际应用价值。

关键词: 空冷型质子交换膜燃料电池系统, 全功率范围, 系统效率, 双堆结构系统

Abstract:

System efficiency of air-cooled proton exchange membrane fuel cell (air-cooled PEMFC) is experimentally studied on full power range. Results show air-cooled PEMFC system efficiency is a parabola with the system power. With the increasing of the system power, system efficiency increases dramatically; system efficiency decreases slowly after it reaches the peak efficiency, and then almost approaches to a flat. The system efficiency is about 47% in the rated power, and the peak efficiency is about 56% nearby the 50% of rated power. A "dual-stack" PEMFC system is designed, that is to say the PEMFC system consists of two stacks. Hydrogen enters into the PEMFC stacks in series mode. Hydrogen from the previous stack anode end enters into the subsequent stack through a separator. Experimental results show performance of the dual-stack system is only better in higher power range compared to the single stack system with the same cells, and there has litter change in lower power range. The delightful result is the system efficiency significantly improves, and a 60.23% of peak efficiency is obtained. The efficiency of dual-stack system increases by 2%—4% in lower power range, and approximately increases by 5% in higher power range. This dual-stack PEMFC system has great practical valve.

Key words: air-cooled proton exchange membrane fuel cell system, full power range, system efficiency, dual-stack system

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