基于静态排水和被动排热技术的全被动氢氧燃料电池研究

The Performance of Fully Passive Hydrogen-oxygen Fuel Cell Based on Passive Water and Thermal Management Technology

常规氢氧燃料电池系统较为复杂,为简化燃料电池系统,设计了一种基于静态排水和被动排热技术的全被动燃料电池。通过增加静态排水和导热板等组件,加强了燃料电池的功能性,减少系统关键零部件。极化性能显示全被动燃料电池与常规燃料电池性能相当,表明全被动燃料电池结构改进并未对燃料电池性能造成不良影响。测试结果表明,全被动燃料电池可长时间恒电流稳定工作,且运行期间电池内部温度仅存在小范围的稳定波动,说明电池运行中产生的废热和多余的水分可以通过导热性能较好的热解石墨和排水组件排出电堆,达到热量和水的平衡。这种基于静态排水和被动排热技术的全被动燃料电池简化了电池系统结构,提高了可靠性,在航天领域具有广阔的应用前景。

The system of the conventional fuel cell is complex. To simplify the fuel cell system, a fully passive fuel cell was designed based on static water removal and passive heat exhaust technology. The adding of passive water removal membrane and thermal conductive plate greatly strengthened the functionality of the fuel cell and reduced the number of key components of the system. The polar measurement showed that the fully passive fuel cells demonstrated the same performance as compared with the conventional ones, suggesting that the structure changing did not damage the cell performance. The results also showed that the fully passive fuel cell could operate stably at constant current for a long time with the inner cell temperature only changing within a small range. The results demonstrated that the generated heat exhaust and extra water during the operation process could be removed by the Pyrolytic graphite and water removal membrane, reaching an equilibrium of water and heat. This novel fully passive fuel cell can greatly simplify the cell structure and enhance the reliability of the cell system, showing promising potential applications in space in the future