关键词: 燃料电池；环境参数；系统性能；环境适应性

Abstract: With the rapid development of hydrogen energy industry and the breakthrough and maturity of fuel cell key technologies, hydrogen fuel cell with zero-emission characteristics is regarded as the best solution for new energy in the future. In order to improve the environmental adaptability of fuel cell systems, based on the fuel cell system model verified by the measured data, a study on the influence of environmental parameters such as environmental humidity, temperature and pressure on the system performance is carried out. The results show that low environmental humidity will lead to the increase of fuel cell internal resistance under high current density, which will reduce the system output power. At a current density of 2 A/cm 2 , the output power of the stack differs by about 8 kW between an environmental humidity of 20 %RH and 100 %RH; environmental temperature affects the stack inlet pressure, flow rate, and power consumption of the air compressor by changing the inlet density. At a current density of 1.6 A/cm 2 , the power consumption of the air compressor differs by 3.9 kW between environmental temperatures of -20℃ and 30 ℃. Low environmental temperature is conducive to improve of the system efficiency in the low current density period, while the high current density period reduces the efficiency of the system; the decrease in environmental pressure leads to a decrease in the inlet flow and pressure of the stack, which in turn leads to a decrease in stack voltage and output performance. It may even be unable to operate normally in high altitude and high power demand situations. The article provides reference data and theoretical basis for the actual application scenarios for the fuel cell engine to meet the increasingly strict requirements for the environmental adaptability of fuel cell engine.

Key words: fuel cell; environmental parameters; systems performance; environmental adaptation