METHOD FOR THE MANAGEMENT OF THE ELECTRICAL CURRENT SUPPLY IN A MOTOR VEHICLE

The invention relates to a method for managing electrical power supply in a motor vehicle with an internal combustion engine, wherein the state of charge of a battery, which can provide at least the current for starter, ignition and lighting, is detected and characterized as a discrete variable (LowSOCFlag) which indicates whether the current state of charge is below or above a calibrated threshold value (LowSOCThresh). If the discrete variable indicates (S1) that the current state of charge is below the calibrated threshold value, charging of the battery is performed using a relatively high voltage (Setpoint1) over a predetermined period of time such that all cells of the battery are charged evenly and completely (S7-S13). If the discrete variable indicates that the current state of charge is above the calibrated threshold value, depending on a current energy conversion efficiency of the powertrain, which is detected and characterized as a further discrete variable (LowEffFlag), different temperature-dependent voltage setpoints (Setpoint0, Setpoint1, ...) of an alternator in the vehicle are set (S2-S6).