大功率燃料电池增湿系统的研究与进展

Research and Development of Humidifier System of the High-power Fuel Cell

在质子交换膜燃料电池系统中,增湿系统是最重要的子系统之一,若增湿水太少,会导致燃料电池内阻增大;若增湿水过多,又会导致阴极水淹。为保障燃料电池的稳定运行,必须对燃料电池增湿技术进行研究。综述了当前燃料电池增湿技术己经取得的最新研究成果,详细论述了它们的工作原理,并比较了各自技术上的优缺点,最后对燃料电池增湿技术进行展望,提出可借助数学模型对增湿进行控制,对燃料电池增湿系统的设计和改进具有一定的参考意义。

In the Fuel Cell system,humidifier system is one of the most important subsystems. If humidified water is not enough, an increase of internal resistance will be resulted. However, if there was too much water, the cathode will be drowned. So the key to the stable operation of the Fuel Cell is a well - designed humidifier system. Several humidifier technologies of the current high - power proton exchange membrane fuel cell were introduced. Their working principles were discussed and their strengths and weaknesses were compared respectively. A mathematics model was proposed for the control of humidity. It can serve as a reference and guide to the design and improvement of the humidifier subsystem.