Coordination interest in electric vehicles long distance trips

International audienceIn a context of CO 2 emissions reduction, carmakers are looking toward battery Electric Vehicle (EV), a mature technology which is considered as zero tank-to-wheels emissions. Even if this technology is perfectly adapted to daily commute, it encounters two issues for long trips utilization: short ranges and small amount of charging stations in public spaces. The drop in battery prices and the rise of their energy density permitted the introduction of consumer cars with more than 400 km range, while improvements in high power charging point units (with a rate 100 kW and above) offer hundreds of kilometers range gain in 20 minutes. In those conditions long distance trips can also be performed. One risk remains: the travel time depends on the availability of charging stations, which can drop during rush hours, due to long queue, or grid power overload. This paper discusses about systems that can coordinate electric vehicles during long distance trips, where they have to use fast charging stations. We will provide a framework to highlight potential benefits of such system. It will be illustrated with an application over a highway with 100 EV. Results show a better distribution of EV in all charging stations and a average time gain of 27%