Abstract:

The popularity of Electric Vehicles (EVs) has been playing an increasingly important role in Electro Mobility (E-Mobility). One of the major concerns is the anxiety of EVs, as drivers may suffer from discomfort due to long charging time. This paper leverage the battery switch technology to provide an even faster charging than plug-in charging service, by cycling switchable (fully recharged) batteries at Charging Stations (CSs). Upon that, a cost-efficient Publish/Subscribe (P/S) system is provisioned, to facilitate the design of distributed charging manner for privacy guarantee. The proposed communication framework utilizes Mobile Edge Computing (MEC)-functioned Road Side Units (RSUs) to bridge, process, and aggregate the information flow between CSs and EVs. The authors further design an advanced reservation-based charging system, in which the knowledge of EVs' reservations is utilized to predict how likely a CS will be congested. Results show the charging system benefits from this anticipated information to make CS-selection decisions, which further reduces the EVs’ waiting time for battery switch and increased CSs’ switched batteries. Further results also imply the strategies on position of RSUs and ICT configurations, to support low cost information exchange within E-Mobility system.