Research And Design Of Simulation Software Of Electric Bus Swapping Station

ABSTRACT:With the increasing pressure of energy shortages, electric cars become a research hotspot at present. Electric bus is an inevitable choice for city buses. At present battery swap station is one of the most important electric bus power supply mode which has many advantages like high utilization rate of vehicles, long battery life, convenient maintenance etc. Based on experiences of engaging in the electric bus swapping station process design and research on power battery pack technique, utilizing long-term running data of Beijing Olympic Games Bus swapping station, the paper aims to reduce the construction cost and using cost of the swapping station by designing a set of simulation software.By analyzing buses operating characteristics and the running data of the swapping stations, the research work can be summarized as follows:(1) The reduction of the charging cost and construction cost of the charging station as the objective, the optimization of the departure time interval for the electric bus is developed.(2) The distribution model of battery SOC of electric bus back to the swapping station, battery charging time model and charging power model are established.(3) The design parameters calculation method for the charging station is proposed based on SOC distribution model of the power battery back to the station.(4) Considering capacity recession of the lithium-ion battery, the redundancy design method of the swapping station core parameters is proposed.(5) On the basis, using C#as the development environment, a set of simulation software is compiled. In order to improve the universality of the software, the software uses Microsoft Access for database. Taking the actual data of Beitucheng swapping station in Beijing as a simulation example, the accuracy of the method developed is verified in the paper and a theoretical basis for the construction of the electric bus swapping stations and the redundancy design is provided.