Method for calculating trajectory to be followed by e.g. electric vehicle till destination, involves providing directive to driver of vehicle for indicating driver to recharge traction battery of vehicle during determined time and cost

The method involves providing a directive to a driver of a vehicle for indicating the driver to recharge a traction battery of the vehicle during determined time (TCX1) and at determined cost (CCX1) and to exchange the battery at the determined cost, and/or to add fuel in a tank of the vehicle at the determined cost. Consumption of the vehicle is estimated with respect to external information with the vehicle, where steps in the method are selected so as to minimize time to reach a destination (B) or to minimize the costs to reach the destination. The information includes weather conditions, a state of a road and traffic. An independent claim is also included for a device for calculating a trajectory to be followed by an electric or hybrid vehicle till a destination. La présente invention concerne une méthode et un dispositif pour calculer un trajet à suivre par un véhicule électrique ou hybride jusqu'à une destination. Le trajet calculé inclut des étapes choisies parmi un ensemble prédéterminé de stations services, les étapes étant sélectionnées de manière à minimiser le temps pour atteindre la destination ou à minimiser le coût pour atteindre la destination. Application : véhicules électriques et hybrides