Patent ID: 9431852
Filing Date: 2016-08-30
CPC Classification: G01R,H01M,H02J,Y02E

Claim Text:
1. A power supply device comprising: an input terminal to which an electric power is supplied from a commercial power source; an output terminal connected to an electric load; an electric power transmission circuit which is connected between the input terminal and the output terminal; a power storage device which is connected to the electric power transmission circuit and is charged by the electric power supplied from the input terminal; a metal-air battery which is connected to the electric power transmission circuit and is maintained in a standby state where a material of an electrolytic solution is separated from a negative electrode active material of the metal-air battery; a tank accumulating a material of the electrolytic solution separated from the negative electrode active material, the tank being connected to the metal-air battery via a valve; and a controller which controls the valve to supply the material of the electrolytic solution accumulated in the tank into the metal-air battery when a normal power supply from the commercial power source is stopped, wherein the metal-air battery is connected to the electric power transmission circuit via a switching element, and wherein the controller switches on the switching element when the controller detects that the voltage across the terminals of the metal-air battery reaches the rated open circuit voltage after supplying the material of the electrolytic solution into the metal-air battery.