中文摘要：

本文从成本的角度提出了车用PEM燃料电池寿命的一种评价方法—燃料电池经济寿命,并建立相应的数学模型。燃料电池经济寿命定义为燃料电池总成本（包括制造成本和使用过程中燃料与附属设备消耗成本）除以使用时间得到的平均使用成本最小时的燃料电池工作时间。燃料电池到达其经济寿命后,更换膜-电极组件,进入第2轮寿命循环,分析表明,第2轮寿命循环的平均成本有所降低,经济寿命相应缩短。最后分析了氢气价格和电池衰减率等因素对燃料电池经济寿命的影响。

英文摘要：

In this paper, a service life evaluation method for vehicular PEM fuel cell --- fuel cell economical lifetime is proposed with its math model set up. Fuel cell economical lifetime is defined as the service time of fuel cell when its average service cost （ total cost, i.e. the manufacture cost plus the consumption costs of fuel and accessory devices divided by service time） is minimum. When fuel cell reaches its economical lifetime, its membrane-electrode assembly is renewed and the fuel cell enters its second life cycle. The results of analysis indicate that both the average service cost and corresponding economical lifetime in second life cycle is slightly less than those in first life cycle. Finally the effects of factors including hydrogen price and fuel cell decay rate on the economical lifetime of fuel cell are analyzed.