Vehicle Proton Exchange Membrane Fuel Cell Performance Test And Hybrid Power Simulation Research

With the continuous progress and development of society,fossil energy,mainly oil and coal,has been consumed in large quantities,and the energy consumption of automobile internal combustion engine also occupies a considerable proportion.At present,the new energy vehicle using lithium battery as power source is gradually replacing the traditional internal combustion engine vehicle to achieve "zero emission" of the vehicle.But the life of lithium batteries can not reach the level of internal combustion engines.Therefore,as a new type of power source,fuel cell has the advantages of long endurance and "zero emission",which is the new trend of automobile power source development and has broad prospects for development.In this paper,carrying out the vehicle proton exchange membrane fuel cell performance experiments and hybrid power simulation research,so that the fuel cell system can be efficient and stable operation.At the same time,the simulation research of vehicle fuel cell performance and multi-energy source control is carried out to provide theoretical guidance for the establishment of hybrid power experimental platform.Firstly,the proton exchange membrane fuel cell performance test platform was used to study the influence of different factors on the proton exchange membrane fuel cell output performance.The higher the excess hydrogen coefficient,the better the output performance,but the lower the efficiency.The excess air coefficient should be decreased at low current density and increased at high current density to achieve the best output performance.Then,the proton exchange membrane fuel cell experimental data and lithium battery experimental data,combined with energy management strategy,based on LMS AMESim simulation software,hybrid power system simulation research.It is concluded that the hybrid power system can meet the dynamic demand of the selected working conditions.Reduce the power fluctuation of fuel cell and make it work in proper range;stable SOC state of lithium battery;power distribution by DC/DC converter.In this paper,the high efficiency and stable operation parameters of proton exchange membrane fuel cell for vehicle are obtained through performance test,and hybrid power simulation is carried out by combining test data and energy management strategy,which has important theoretical and practical value.