CAJ | 학술논문

燃料电池做为汽车动力源时,应能够在多变环境和不同工况下保持高效、稳定的工作状态.燃料电池在不同工况下,其运行参数对燃料电池本身性能的影响是不同的.为给燃料电池提供合适的工作条件,确保燃料电池在高效区运行.通过对高压质子交换膜燃料电池的正交试验研究,分析流量、压力和温度等运行参数对高压燃料电池性能的影响,得到如下结论:空气流量对燃料电池性能的影响较小,随着电流的增加,影响有所增加;空气压力的影响略大,并且在小电流时,这种影响比较显著;氢气压力(压力差)的影响始终很小,几乎可以认为没有影响;燃料电池工作温度对燃料电池性能的影响仍然十分大,并且随着温度的升高,其影响越来越大;随着电流的加大,燃料电池温度的影响也逐渐增大,在高电流状态下,几乎是唯一重要的影响因素.
연료전지주위기차동력원시,응능구재다변배경화불동공황하보지고효、은정적공작상태.연료전지재불동공황하,기운행삼수대연료전지본신성능적영향시불동적.위급연료전지제공합괄적공작조건,학보연료전지재고효구운행.통과대고압질자교환막연료전지적정교시험연구,분석류량、압력화온도등운행삼수대고압연료전지성능적영향,득도여하결론:공기류량대연료전지성능적영향교소,수착전류적증가,영향유소증가;공기압력적영향략대,병차재소전류시,저충영향비교현저;경기압력(압력차)적영향시종흔소,궤호가이인위몰유영향;연료전지공작온도대연료전지성능적영향잉연십분대,병차수착온도적승고,기영향월래월대;수착전류적가대,연료전지온도적영향야축점증대,재고전류상태하,궤호시유일중요적영향인소.
As the power unit of automobile, fuel cell system should be stable and highly efficient under different load conditions in variable environment. Under different load conditions, operation parameters of fuel cell system have different impact on its performance. Correct operation parameters should be employed to make sure fuel cell system operates in high-efficiency zone. 0rthogonal tests are employed to analyze the effect of operation parameters, such as flow rate, pressure, temperature, on the performance of the high-pressure fuel cell system. Some conclusions are derived from the tests. Air flow rate has less effect on the performance of fuel cell system, however, with the increase of current, the effect increases slightly. Air pressure has greater impact on the performance of fuel cell system, and such impact is remarkable when the current is low. Hydrogen pressure always has little effect. Operation temperature has very great impact on the performance of fuel cell system, and with the rise of temperature, its impact is more and more great. With the increase of current, the effect of temperature is also gradually increasing, and it becomes the only significant affecting factor when the current is high.