燃料电池低温储存、启动热平衡建模与分析  

Modeling and Analysis of Fuel Cell Stack Low Temperature Storage and Subzero Start-up

作　　者：刘煜 曹蕾 孔红兵 胡军 LIU Yu;CAO Lei;KONG Hongbin;HU Jun(Dongfang Electric(Chengdu)Hydrogen Fuel Cell Technology Co.,Ltd.,611731,Chengdu,China;Sichuan Key Laboratory of Long-life Fuel Cells,611731,Chengdu,China)

机构地区：[1]东方电气(成都)氢燃料电池科技有限公司,成都611731 [2]长寿命燃料电池四川省重点实验室,成都611731

出　　处：《东方电气评论》2024年第1期16-19,共4页Dongfang Electric Review

摘　　要：质子交换膜燃料电池发动机低温冷启动性能是制约燃料电池发动机广泛应用的重要指标,合理的停机保温设计和启动策略能极大提高低温冷启动成功率、加快启动速度、减小膜电极损伤、延长燃料电池使用寿命。采用传热学原理,结合燃料电池物性参数,建立了燃料电池系统启停过程动态热平衡计算模型,并基于该模型对燃料电池在不同降温速度、不同低温储存温度和不同保温设计下的启动能耗等进行计算和对比分析研究。研究计算表明,所归纳的模型、计算方法和结果,可为工程应用提供降温时间、降温速度、保温所需厚度的数据参考,并指导选择燃料电池的低温储存环境,计算并使用合适的保温材料厚度,降低低温环境对燃料电池伤害、保障低温顺利启动、减小低温储存和启动能耗。The cold start characteristics of Proton-Exchange Membrane Fuel Cell(PEMFC)Engine is one of the key indicators that constrains the wide application of the PEMFC engine.Suitable shut-down insulation design and start-up strategy could greatly enhance the success rate of subzero start-up,the speed of start-up,and reduce the membrane’s damage,prolong the life-span of the PEMFC.Adopting the heat transfer principle,combining with the physical property of PEMFC,the dynamic heat balance calculation model was established.Calculation,comparison and analysis of the start-up power consumptions under different cooling rate,sub-zero storage temperature,insulation thickness were carried out.The research and calculation show that the models,calculation methods and results can provide data reference on the cooling rate,speed and required insulation thickness.And can guide the selection of sub-zero storage environment,calculation of suitable insulation thickness.Thus,to reduce the damage,safeguard the start-up process,decrease the power consumption of storage and start-up of PEMFC in sub-zero environment.

关 键 词：低温启动 热平衡 建模模拟 

分 类 号：TM911.4[电气工程—电力电子与电力传动]