METHOD AND SYSTEM OF BATTERY MANAGEMENT FOR AUTOMOTIVE VEHICLE

Method of estimating the current across the terminals of the battery of an automotive vehicle, characterized in that it comprises the following steps: - a step of regulating the voltage of the alternator of the automotive vehicle in the course of which the regulating voltage Ub of the alternator is stabilized for a certain period at a voltage close to that of equilibrium of the battery, thereby causing the current of the battery ICha to tend to zero, - the calculation of the resistance R of the electrical components of the vehicle through the relation R = Ub/ICarb where ICarb is the current consumed by the vehicle, equal to the current delivered by the alternator, during this period of regulation of the voltage of the alternator at a voltage close to that of equilibrium of the battery, - changing of the alternator voltage regulation value to a higher value Uh, and calculation of the charge current IChah of the battery through the relation IChah = IAlth - Uh / R, where IAlth is the current delivered by the alternator.