Abstract: A system and a method for managing power on board a vehicle is described herein, that allows power to be provided to electrical equipment of the vehicle in an optimized manner from a plurality of power sources without the charge of the equipment disrupting the electrical network of the vehicle.

Abstract: The supply of an electric equipment material (5), such as a telecommunications station, is implemented in priority by an intermittent power source (6), and makes use as much as possible of batteries (31) and as little use as possible of a fuel cell electrochemical generating unit (4) for increasing the life of the latter. The equipment and the generating unit are supplied by the source so as to produce and stock fuel in the generating unit when the power of the source exceeds the operation power of the equipment and the batteries are in full charge. Destocking the fuel in the generating unit, supplying the equipment by the generating unit and charging the batteries by the generating unit are carried out as soon as the power of the batteries is at a discharge threshold and until the batteries reach the full charge.

Abstract: In order to make more specifically water autonomous a hydrogen cell electrochemical generating unit (10), the generating unit (1) comprises a condenser (13) provided with a fan (13V) and with a radiator (13R) in contact with a tank (12) stocking hydrogen into a hydride. The condenser simultaneously transfers heat from a steam filled air (17E) to an endothermic reaction of the hydride into an alloy and into hydrogen via the radiator and condenses the steam into condensation water (13EC) being collected by a tank (14) supplying an electrolysis facility (11) with water for producing the hydrogen to be stocked.