Patent ID: 6798166
Filing Date: 2004-09-28
Classification: H02J

Abstract:
Electrical power system for an automobile vehicle comprising;an alternator comprising a plurality of phases; a first battery with a voltage less than an electromotive force or nominal voltage of the alternator; a second battery with a voltage higher than the electromotive force or nominal voltage of the alternator; a controlled switch in series with the first battery for each phase of the alternator; diode means for charging the second battery for each phase of the alternator; and control means for opening and closing each controlled switch to charge the first battery while an inductance internal to the alternator is being charged and charge the second battery while the inductance is being discharged; and wherein the control means is operable to close a controlled switch such that the first battery is charged at the same time as an inductance corresponding to the phase of the alternator associated with said closed controlled switch and to open said closed controlled switch after the inductance corresponding to the phase of the alternator is charged such that the inductance discharges into the second battery.