Design And Implementation Of Communication Network Between Charging Piles Based On 6LoWPAN

Vigorously developing new energy vehicle applications is a strategic development policy of the Chinese government.It is of great significance in terms of energy conservation,emission reduction and energy security,and is also conducive to promoting China’s move from a large automobile country to a car power.In recent years,IoT technology has been widely applied to charging facilities,which not only facilitates more scientific charging facility management,provides better charging services,but also focuses on smart grid construction.After analyzing the necessity and various ways of the current charging pile access network and the existing problems,this paper proposed a networking scheme based on 6LoWPAN.Firstly,the research significance is demonstrated by analyzing the development background and current situation of the charging piles communication network.Secondly,the existing forms of the communication network and related key technologies such as 6LoWPAN were introduced in detail.Then,in view of the problems of poor network scalability and high cost of current communication,6LoWPAN is introduced as a solution for charging pile networking,and a charging piles communication network system based on 6LoWPAN wireless network is designed.We designed the functional structure of the pile,added a control module dedicated to the communication function,designed the protocol stack of the wireless 6LoWPAN network of the charging pile terminal,and enabled the network system to support both IPv6 and IPv4 by using the NAT64.The RPL routing protocol is adopted to realize the 6LoWPAN self-organizing network and realized the remote monitoring and management of the charging pile by using the CoAP protocol designed for the wireless network of the embedded device.Finally,a simulation experiment was carried out for the charging pile group communication system designed in this paper.Using TI’s CC2538 chip and Contiki embedded operating system to build a simulation environment,simulated the 6LoWPAN charging piles communication network,and analyzed the characteristics and advantages.In conclusion,through the relevant theoretical analysis and simulation experiments,the rationality and feasibility of establishing a communication network between charging piles based on 6LoWPAN was preliminarily demonstrated.