First

to meet the information acquirement and management demand of battery tank in the storage

transport and charging processes of electric vehicle charging facilities

the smart battery tank technology based on wireless sensor network (WSN) and radio frequency identification (RFID) is proposed. A three-level internet of things structure of charging and swapping service is built. Then

a battery management system (BMS) of smart battery tank with sensor modules is designed. The panoramic data acquisition of the electric vehicle charging station is described. The system key technology of the clustered-multi-hop routing protocol with virtual grids is proposed. The network formation

cluster-head selection

route maintaining and data transmission processes are detailed with respect to route control and routing algorithm. The protocol simulation with OMNet++ shows that the proposed algorithm is able to effectively prolong the life cycle of WSN of the smart battery tank. This work is supported by National Natural Science Foundation of China (No. 51407025)

State Grid Corporation of China and Jiangsu Province Science and Technology Support Program (Social Development) (No. BE2013737).