Research And Design Of AC Charging Pile Control And Management System For Electric Vehicles

In recent years,the rapid increase in the number of electric vehicles has promoted the development of AC charging piles and their supporting facilities.However,the AC charging piles that have been built still have problems such as poor user experience,imperfect management,high operating costs,and unsafe network communication.In view of the above problems,this paper studies and designs a safe,reliable and well-operated AC charging pile control and management system to ensure the stable operation of charging piles,secure transmission of network communication data,reduce the work intensity of background managers,and reduce the operation of charging piles.Cost and other aspects are of great significance.In this paper,the modular design idea is used to study and design the hardware circuit of the AC charging pile control system.With STM32F407ZGT6 as the core of the control system,functional modules such as RFID module,energy metering module,human-computer interaction module,GPRS wireless communication module and control guidance module are designed.At the same time,the driver of each function module was written,and the driver of each module was integrated,and the software design of the charging pile control system was finally completed.Secondly,through the analysis of the functional requirements of the AC charging pile management system,according to the structural design principles,the overall functions of the management system are divided into five parts:communication function,communication security protection function,charging pile monitoring function,data management function and user management function.Then the corresponding functional modules are designed accordingly.In order to realize the communication function between the charging pile terminal and the background management center,the communication networking mode and the network communication protocol are designed,and the communication program of the background management system is written.At the same time,the national secret SM4 algorithm with high security and fast computing speed is used to encrypt the network communication data,so that the communication data is transmitted in the form of ciphertext,which ensures the security of the network communication data.The ODBC database access technology realizes the management functions of querying,updating,and storing data,and realizes the management function of user data.With the help of Visual Studio 2013 development tools and MySQL database,the C/S architecture was used to develop the charging pile background management platform,and the management platform interactive interface was designed.Finally,the overall design of the charging pile background management system was completed.Finally,a simulation test platform for AC charging pile control and management system was built.The overall functions of each functional module and system were tested.The AC charging pile control and management system designed in this paper meets the design requirements.