燃料电池汽车的氢耗分析模型与应用

为便于定量分析燃料电池汽车的氢耗影响因素和整车氢耗潜力,文中基于燃料电池汽车行驶时内部的能量流动关系,首先定义平均综合传动效率并提出理论氢耗计算分析模型.通过对氢耗的多种影响因素进行分析,进一步得到理论氢耗增量模型.最后基于advi-sor自带的燃料电池汽车模型,通过理论和仿真分析量化了滚动阻力系数、传动系机械效率、电机效率、燃料电池效率对整车经济性的影响.此外,基于各影响因素未来可能达到的极限状态,通过仿真得氢耗潜力为0.6 kg/100 km.不同因素的量化分析和氢耗潜力的确定不仅对燃料电池汽车动力系统前期研发有重要指导意义,而且在实车开发期间可为部件选择和参数标定提供优化方向.

Hydrogen-Consumption Analysis Model of Fuel Cell Vehicles and Its Application

In order to facilitate the quantitative analysis of hydrogen-consumption impact factors and hydrogen-consumption potential for fuel cell vehicle, the average integrated transmission efficiency was first defined and a theoretical model of hydrogen-consumption calculation and analysis was proposed, on the basis of the internal energy flow relationship of the fuel cell vehicle during driving. By analyzing the various impact factors of hydrogen-consumption, the theoretical hydrogen-consumption-increment model was further obtained. Finally, based on the fuel cell vehicle model provided by the advisor, the effects of rolling resistance coefficient, mechanical efficiency of the drive train, motor efficiency and fuel cell efficiency on the economics of the vehicle were quantified through theoretical and simulation analysis. In addition, based on the possible-limit state that each influencing factor may reach in the future, the hydrogen consumption potential obtained from the simulation is 0.6 kg/100 km. The quantitative analysis of different factors and the determination of hydrogen consumption potential not only provide critical reference for future research of the fuel cell vehicle powertrain, but also point out the optimization direction for component selection and parameter calibration during the development of actual vehicle.