基于电池堆参数变化的燃料电池系统冷却水泵故障判据分析  

Fault Diagnosis of Cooling Pump in Fuel Cell System Based on Stack Performance

作　　者：杨海玉[1] 胡杨月 YANG Haiyu;HU Yangyue(Central Research Academy of Dongfang Electric Corporation,611731,Chengdu,China)

机构地区：[1]东方电气集团中央研究院

出　　处：《东方电气评论》2019年第4期1-6,共6页Dongfang Electric Review

基　　金：四川省重大科技专项《氢燃料电池客车及关联产业关键技术研究与示范》(2019ZDZX0002)资助

摘　　要：冷却水泵故障是影响燃料电池系统稳定运行的重要风险之一。本文通过燃料电池测试平台模拟系统冷却水泵故障时电池堆流体温度、性能的运行变化规律,研究了温差及性能判据对于判别循环水泵故障的显著性,并对电池堆失效原因进行了探讨。结果表明,冷却水泵故障条件下电池堆失效主要是由于热量累计、膜电极湿度太低脱水电阻增大导致,燃料电池系统设置空气出口温度传感器,通过空气出堆温度同冷却剂进/出堆温度的差值精确的判别冷却水泵故障。The failure of coolant pump is one of the most important risks affecting the stable operation of fuel cell system. This paper studies the change of stack performance and fluid temperature under the coolant pump failure condition by fuel cell stack test station. Temperature difference and performance criterion is evaluated for the failure of cooling pump, and the failure reason of the stack is discussed. The results show that the interruption of fuel cell stack power generation is mainly due to the accumulation of heat and the dehydration of MEA under the failure of cooling pump, which is diagnosed effectively by the temperature difference between air outlet and coolant by setting a sensor at the air outlet.

关 键 词：冷却水泵故障 判据 燃料电池堆 空气出堆温度 

分 类 号：TM911[电气工程—电力电子与电力传动]