Patent ID: 9502725
Filing Date: 2016-11-22
CPC Classification: H01M,Y02E,Y02T

Claim Text:
1. A fuel cell system, comprising: a fuel cell that receives fuel gas and oxidation gas and generates electric power through electrochemical reaction of the fuel gas and the oxidation gas; a storage section capable of charging with the electric power generated at the fuel cell; an electric power consumption device that consumes electric power from the fuel cell and the storage section; a first voltage converter disposed between the fuel cell and the electric power consumption device; a second voltage converter disposed between the storage section and the electric power consumption device; a connector that connects or disconnects a path, the path supplying electric power from the first voltage converter to the electric power consumption device and coupling the first voltage converter and the second voltage converter; and a controller that is programmed to control connection or disconnection of the path supplying electric power by the connector, wherein when the system starts, the controller is further programmed to compare an output voltage difference between the first voltage converter and the second voltage converter with a predetermined value that is set as a value at which welding of the connector occurs, and wherein the controller is further programmed to maintain the output voltage difference equal to or less than the predetermined value, and to subsequently connect the path, wherein the controller is further programmed to control the output voltage difference to be a predetermined value or less by boosting an output voltage of the first voltage converter.