大功率燃料电池汽车氢循环系统性能分析  

Performance Analysis of Hydrogen Recirculation System of High Power Fuel Cell Vehicles

作　　者：韩济泉 孔祥程 冯健美[1] 彭学院[1] Han Jiquan;Kong Xiangcheng;Feng Jianmei;Peng Xueyuan(School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049)

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《汽车工程》2022年第1期1-7,35,共8页Automotive Engineering

基　　金：中央高校基本科研业务费专项资金(xzy022021022)资助。

摘　　要：大功率氢燃料电池商用车是推动氢能应用的聚焦点,而设计高效可靠的氢循环系统对其性能至关重要。本文中以200 kW大功率燃料电池系统为例,研究分析了4种氢循环系统方案,基于理论分析和CFD模拟结果,建立了氢循环装置性能评价指标,从不同方面分析总结了各氢循环方案的特点。结果表明,引射器和氢泵联合使用可以显著减小氢泵的功率消耗,相比于仅氢泵模式,在并联模式下氢泵最大功率下降81.4%,串联模式下最大功率下降85.3%。通过循环氢贡献率和功耗的分析表明,引射器和氢泵的串联模式更能充分利用引射器的性能。High power hydrogen fuel cell commercial vehicles is the focus to promote the application of hydrogen energy and the design of an efficient hydrogen recirculation system is crucial for the performance of fuel cell vehicles. In this paper,four hydrogen recirculation schemes are analyzed for a 200 kW high power fuel cell vehicle system. The performance evaluation index of the hydrogen recirculation device is established,and the characteristics of each hydrogen recirculation scheme are analyzed from different aspects based on theoretical analysis and CFD simulation. The results show that the power consumption of the hydrogen pump can be reduced significantly with the combination of the ejector and hydrogen pump. Compared with the hydrogen pump mode,the maximum power of the hydrogen pump in parallel mode is reduced by 81.4%,and the maximum power in series mode is reduced by 85.3%. The analysis of the contribution rate and power consumption of hydrogen recirculation shows that the series mode of ejector and the hydrogen pump can make better use of the performance of ejector.

关 键 词：燃料电池汽车 氢循环系统 引射器 氢循环泵 

分 类 号：U469.7[机械工程—车辆工程]