The Optimization Research Of Battery Swapping And Recharging Station Location-routing Problem Of Electric Vehicle Of Two-echelon Delivery System In Urban Area

With the rapid development of electronic commerce,the scale of online retail enterprise expands constantly,quantity of online order presents fast growth.How to send the order to the customer quickly and accurately with lower logistics cost and lower environmental pollution level has become the main bottleneck of online retail enterprise development.Aiming at the application problem of electric logistic vehicle in the urban two-echelon logistics delivery system of online retail enterprise,put forward to the optimization research of battery swapping and recharging station location-routing problem of different types of electric logistic vehicle,raise the efficiency of the electric logistic vehicle to reduce logistics costs,save energy and reduce environmental pollution.First,we sum up the general process of logistics delivery system and define the scope of urban two-echelon logistics delivery Combing the characteristics of orders of online retail enterprise.Analyze the application status of two kinds of electric logistic vehicles,the electric truck and the electric tricycle in the urban two-echelon logistics delivery system.In combination with the battery properties of the electric truck and the electric tricycle,the battery swapping and recharging station can be positioned according to different energy supply methods to realize the real-time management of electric power.Second,for the electric truck for distribution center to distribution station of the first delivery level.In order to minimum the distribution costs,considering vehicle capacity constraints and different demands of each distribution stations,single objective programming model of incomplete charged electric truck recharging station location-vehicle routing problem was set up.Then,for the electric tricycle for distribution stations to customers of the secondary delivery level,In order to minimum the distribution costs and maximize customer satisfaction,fuzzy processing for different delivery time windows of customers was obtained by constructing membership functions and multi-objective programming model with time windows of electric tricycle battery swapping station location-vehicle routing problem was set up.Then a two-phase heuristic algorithm combining precise algorithm and heuristic algorithm was design to solve incomplete charged electric truck recharging station location-vehicle routing problem and The improved tabu-search technology was designed to solve electric tricycle battery swapping station location-vehicle routing problem with time windows.Finally,Solomon standard tests was employed to validate the validity of the designed algorithm,and sensitivity analysis of three data sets from the test sets which obey different point distributions was carried out.The study provide a new idea for solving the urban two-echelon logistics delivery problem of online retail enterprise-electric logistics vehicles,and provide a scientific and universal solution for effectively use and widely applied of electric logistics vehicle,In practice,the theoretical results can be used to guide to the sustainable development of the urban two-echelon logistics delivery system of online retail enterprises saving the cost of enterprise,help online retail enterprises to realize efficiency and improve the level of customer service.Thus,the core competitiveness of enterprises can be improved.