US 12,407,005 B2
Fuel cell ship
Takuya Hiraiwa, Osaka (JP); Takehiro Maruyama, Osaka (JP); Yasuyoshi Yamaguchi, Osaka (JP); Manabu Shinagawa, Osaka (JP); and Yukihiko Kimura, Kunisaki (JP)
Assigned to YANMAR HOLDINGS CO., LTD., Osaka (JP)
Filed by Yanmar Holdings Co., Ltd., Osaka (JP)
Filed on Jun. 1, 2022, as Appl. No. 17/830,122.
Claims priority of application No. 2021-092709 (JP), filed on Jun. 2, 2021.
Prior Publication US 2022/0393195 A1, Dec. 8, 2022
Int. Cl. H01M 8/04 (2016.01); B60L 58/33 (2019.01); H01M 8/0267 (2016.01); H01M 8/04007 (2016.01); H01M 8/04014 (2016.01); H01M 8/0432 (2016.01); H01M 8/04746 (2016.01)
CPC H01M 8/04074 (2013.01) [B60L 58/33 (2019.02); H01M 8/0267 (2013.01); H01M 8/04014 (2013.01); H01M 8/04358 (2013.01); H01M 8/04768 (2013.01); H01M 2250/20 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A fuel cell ship comprising:
a fuel cell configured to generate electric power by an electrochemical reaction of a fuel;
a propulsion device configured to generate a propulsive force on a hull by the electric power supplied from the fuel cell;
a cooling system configured to cool the fuel cell, the cooling system includes:
a cooling medium tank that accommodates a cooling medium,
a cooling medium circulation pipe configured to circulate the cooling medium between the fuel cell and the cooling medium tank,
a cooling tank internal gas detector installed in the cooling medium tank,
a cooling tank internal gas discharge pipe connected to the cooling medium tank, and
a cooling tank internal gas discharge valve installed in the cooling tank internal gas discharge pipe; and
a control unit configured to control opening and closing of the cooling tank internal gas discharge valve,
wherein the control unit is further configured to open the cooling tank internal gas discharge valve based on the cooling tank internal gas detector detecting that a concentration of a gaseous fuel in the cooling medium tank is equal to or greater than a predetermined value.