【作者】 王佳； 张振； 马明辉； 张宁； 郝冬；

【Author】 Wang Jia;Zhang Zhen;Ma Minghui;Zhang Ning;Hao Dong;China Automotive Technology and Research Center Co.,Ltd.;College of Mechanical and Vehicle Engineering,Hunan University;CATARC New Energy Vehicle Test Center (Tianjin) Co.,Ltd.;

【机构】 中国汽车技术研究中心有限公司； 湖南大学机械与运载工程学院； 中汽研新能源汽车检验中心(天津)有限公司；

【摘要】 示范运行是促进燃料电池汽车技术迭代提升的必要手段之一,基于实路运行数据对燃料电池发动机进行性能分析,可为后续的车辆性能优化提供有效参考。本文在燃料电池汽车示范运行的过程中,采集车辆实路运行数据,然后从氢耗、运行时间、效率等角度对燃料电池发动机进行性能分析,并根据燃料电池堆的电流电压数据,分析了电堆性能和衰减情况。结果表明,示范运行车辆在非怠速运行时,燃料电池发动机的运行时间占比30%～50%,运行功率主要集中在额定功率的25%～45%范围内,电堆运行效率在30%～50%范围内;整车平均氢耗为11.9kg/100km,且氢耗有先随单次车速增大而减小,而后又随之增加的趋势;根据实际运行数据拟合电堆极化曲线,以10%的电压衰减幅度对其进行寿命预测,结果显示大部分电堆的预测寿命可达5500h左右。更多还原

【Abstract】 Demonstration operation is one of the necessary means to promote the iterative improvement of fuel cell vehicle technology.The performance analysis of fuel cell engine based on real road operation data can provide effective reference for subsequent vehicle performance optimization.In this paper,during the demonstration operation of the fuel cell vehicle,the real road operation data are collected,and then the performance of the fuel cell engine is analyzed from the point of view of hydrogen consumption,operation time and efficiency,and according to the current and voltage data of the fuel cell stack,the performance and degradation of the stack are analyzed.The results show that when the demonstration vehicle is operation at non-idle speed,the running time of the fuel cell engine accounts for 30%～50%,the operation power is mainly concentrated in the range of 25%～45% of the rated power,and the stack efficiency is in the range of 30%～50%.The average hydrogen consumption of the whole vehicle is 11.9 kg/100 km,and the hydrogen consumption decreases at first and then increases with the increase of single speed.The polarization curve of the stack is fitted according to the actual operation data,and its life is predicted with a voltage degradation of 10%.The results show that the predicted life of most of the stack is about 5500 hours.更多还原