单体PEMFC电压分布与风扇流速功耗平衡分析

摘要

Based on an self-made proton exchange membrane fuel cell(PEMFC) and other related equipments, the voltage distribution of single cell experiment and the analysis of the air velocity and fan system power consumption in different fan systems were measured under with-load and without-load conditions. The single cell voltage distribution analysis could monitor whether stack performance matched the design requirement, it also could locate the position of low performance single cell and thus the weakest link could be improved. There was a balance between the air velocity through the cathode and fan system power consumption, higher air velocity could improve the degree of heat dissipation,but it would lead to higher power consumption.%基于自制的质子交换膜燃料电池(PEMFC)及相关设备,进行了空载和负载条件下的单体电池电压分布和不同风扇系统的流速与风扇系统功耗平衡分析.单体电池电压分布实验可检验电堆是否符合设计要求,定位性能欠佳的单体电池并进行改进和提高.流过燃料电池阴极的空气流速和风扇系统功耗存在着一个平衡,更高的流速可改善热交换的程度,但要增加风扇系统的功耗.