US 11,990,654 B2
Fuel cell system, working machine including the same, and method of controlling fuel cell system
Takahiro Takaki, Osaka (JP); and Yukifumi Yamanaka, Osaka (JP)
Assigned to KUBOTA CORPORATION, Osaka (JP)
Filed by KUBOTA CORPORATION, Osaka (JP)
Filed on Jun. 14, 2022, as Appl. No. 17/840,115.
Claims priority of application No. 2021-117178 (JP), filed on Jul. 15, 2021.
Prior Publication US 2023/0016974 A1, Jan. 19, 2023
Int. Cl. H01M 8/04 (2016.01); H01M 8/0267 (2016.01); H01M 8/04007 (2016.01); H01M 8/04014 (2016.01); H01M 8/04029 (2016.01); H01M 8/0438 (2016.01); H01M 8/04701 (2016.01)
CPC H01M 8/04723 (2013.01) [H01M 8/0267 (2013.01); H01M 8/04014 (2013.01); H01M 8/04029 (2013.01); H01M 8/04067 (2013.01); H01M 8/04388 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A fuel cell system comprising:
hydrogen tanks to store hydrogen;
a fuel cell to receive hydrogen gas from at least one of the hydrogen tanks to generate electricity;
a temperature controller to adjust a temperature inside the at least one of the hydrogen tanks;
a control unit to control the temperature controller based on the amount of hydrogen remaining in the at least one of the hydrogen tanks, the control unit being configured to increase the temperature inside the at least one of the hydrogen tanks when the amount of the remaining hydrogen is equal to or less than a first predetermined value;
a hydrogen gas supply passage for supply of the hydrogen gas from the at least one of the hydrogen tanks to the fuel cell; and
a first circulating water supply passage to allow first circulating water to circulate therein to adjust a temperature of the hydrogen, the first circulating water supply passage being attached to the at least one of the hydrogen tanks,
wherein the first circulating water supply passage is a circulation passage which passes from the temperature controller through the hydrogen tanks and returns to the temperature controller.