In a power supply device including a fuel cell unit with a stack of fuel cells or a fuel cell stack and a secondary battery, an intermittent drive mode is selected under a preset condition to receive power supply only from the secondary battery. The control procedure of the invention determines whether...http://www.google.fr/patents/US7771856?utm_source=gb-gplus-shareBrevet US7771856 - Energy output device and control method of energy output device
Energy output device and control method of energy output device
