基于默里定律设计的PEMFC阴极分配器研究  

Study of PEMFC cathode distributor designed based on Murray's law

作　　者：靳遵龙[1] 韩旭[1] 霍东方 刘杨[2] JIN Zunlong;HAN Xu;HUO Dongfang;LIU Yang(School of Mechanical and Power Engineering,Zhengzhou University,Zhengzhou Henan 450001,China;Huaneng Henan Zhongyuan Gas Power Generation Co.,Ltd.,Zhengzhou Henan 450001,China)

机构地区：[1]郑州大学机械与动力工程学院,河南郑州450001 [2]华能河南中原燃气发电有限公司,河南郑州450001

出　　处：《电源技术》2023年第3期353-356,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金项目(21676257)。

摘　　要：为了提高质子交换膜燃料电池(PEMFC)中流道内气体分布的均匀性,对燃料电池的流道分配器的结构进行了研究。结果表明:传统的分配器结构会导致通道间的压降差异较大,氧气分布的均匀性差,电池输出功率低。随着增加分配器主通道的宽度,压降差异有所减小,氧气分布的均匀性略有提高。而基于默里定律设计的新型分配器结构可以提高15.67%的通道压降和79.48%的氧气分布均匀性,电池的输出功率也提高约25.2%。最后通过计算推导表明:增加流场中的平均压降和减少通道间的压降差异可以改善气体分布的均匀性。To improve the uniformity of gas distribution in the proton exchange membrane fuel cell(PEMFC),the structure of the fuel cell's distributor was studied.The results show that the conventional distributor leads to large differences in pressure drop between channels,poor uniformity of oxygen distribution and low output power.With increasing the distributor width,the difference of pressure drops decreases and the uniformity of oxygen distribution slightly improves.The new distributor designed based on Murray's law can improve the channel pressure drop by 15.67%and the oxygen distribution uniformity by 79.48%,the output power of fuel cell is also increased by 25.2%.Finally,the derived calculations show that increasing the average pressure drop in the flow field and reducing the pressure drop difference between channels can improve the uniformity of gas distribution.

关 键 词：燃料电池 默里定律 分配器 

分 类 号：TM911[电气工程—电力电子与电力传动]