主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2025, Vol. 50 ›› Issue (23): 35-41.DOI: 10.16638/j.cnki.1671-7988.2025.023.007

• 新能源汽车 • 上一篇    

空冷型 PEMFC 变截面流道阴极构型性能研究

贾彦奎,李浩,王瑶,江宇   

  1. 长治职业技术学院
  • 发布日期:2025-12-08
  • 通讯作者: 贾彦奎
  • 作者简介:贾彦奎(1997-),男,硕士,助教,研究方向为氢燃料电池设计制造

Performance Study of Variable Cross-Section Flow Channel Cathode Configuration for Air-Cooled PEMFC

JIA Yankui, LI Hao, WANG Yao, JANG Yu   

  1. Changzhi Vocational and Technical College
  • Published:2025-12-08
  • Contact: JIA Yankui

摘要: 空冷型质子交换膜燃料电池(PEMFC)具有结构简单紧凑、能耗低的优点,只留氢气 供给系统和风扇,氢气供给系统和风扇分别为电堆提供氢气和空气。基于传统直流道存在脊 下气体扩散性能差的问题,提出台阶流道和侧壁缩流道两种变截面流道空冷型 PEMFC,并与 传统直流道进行对比,系统研究了变截面阴极流道对输出性能、反应气体在膜电极中传输、 生成水的去除、压降和冷却能力的影响。研究表明:台阶流道和侧壁缩流道功率密度分别比 直流道提升 6.4%和 7.8%。平均温度分别比直流道降低 7.4%和 7.3%。

关键词: PEMFC;变截面流道;功率密度

Abstract: Air-cooled proton exchange membrane fuel cells (PEMFC) have the advantages of simple and compact structure and low energy consumption. Only the hydrogen supply system and the fan are retained, which respectively provide hydrogen and air for the stack. Based on the problem of poor gas diffusion performance under the ridge in the traditional straight channel, two types of variable cross-section channels, namely the step channel and the side wall constricted channel, are proposed for air-cooled PEMFC, and compared with the traditional straight channel. The effects of the variable cross-section cathode channel on output performance, gas transport in the membrane electrode, water removal, pressure drop and cooling capacity are systematically studied. The results show that the power density of the step flow channel and the side wall constricted flow channel is increased by 6.4% and 7.8% respectively compared with the straight flow channel. The average temperature is reduced by 7.4% and 7.3% respectively compared with the straight flow channel.

Key words: PEMFC; variable cross-section flow channel; power density