摘要
为优化基于压力降的含水量诊断方法中的压力降基准,构建了一种燃料电池阳极侧单相流压力降模型,在建模过程中采用童景山的粘度计算方法以提高压力降模型的精度,同时该模型通过电流与气体流量解耦的方式扩大了压力降方法的应用范围。通过试验对模型进行了验证,结果表明,在不同进气压力、输出电流与工作温度的条件下,试验数据与模型仿真结果基本吻合,仅在高温条件下,试验数据与仿真结果出现了较大误差。
A fuel cell single-phase flow pressure drop model was constructed to optimize pressure drop based on pressure drop method of water content diagnosis.In the process of pressure drop modeling,Tong Jingshan’s viscosity calculation method was utilized to improve the model accuracy.Moreover,the model with decoupling of current and gas flow can also be extended for the application range of pressure drop method.Finally a set of tests were carried out to prove the veracity of the model.The results show that the model simulations are basically consistent with the experimental data under different inlet pressure,output current and working temperature.A large error between the test data and the simulation results emerges only under high temperature conditions.
作者
单希壮
杨月华
马天才
杨彦博
林维康
Shan Xizhuang;Yang Yuehua;Ma Tiancai;Yang Yanbo;Lin Weikang(Tongji University,Shanghai 201804)
出处
《汽车技术》
CSCD
北大核心
2019年第1期7-12,共6页
Automobile Technology
基金
国家重点研发计划项目(面向重卡用大功率燃料电池系统集成与控制)
关键词
燃料电池
水管理
故障诊断
压力降
Fuel cell
Water management
Fault diagnosis
Pressure drop
