METHOD AND DEVICES FOR MAXIMISING THE SERVICE LIFE OF A TRACTION BATTERY OF AN ELECTRIC VEHICLE, IN PARTICULAR A LI-ION BATTERY

摘要

The present invention particularly concerns a method for regulating the charge level of a traction battery (2) of an electric vehicle (4) connected to an electricity distribution network (3) via a bidirectional charger (1). The method comprises a step of estimating a period during which the battery (2) will not be used. The method also comprises a step of estimating an optimum charge level in order to minimise the loss of capacity of the battery (2) on the basis of the estimated time during which it will not be used. The method also comprises a step of reducing the charge level by transferring a quantity of energy from the battery (2) to the network making it possible to attain the optimum charge level.