US 12,449,094 B2
In-vehicle liquid hydrogen tank and a method for manufacturing the same
Naoaki Ito, Kariya (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken (JP)
Filed on Jun. 30, 2023, as Appl. No. 18/344,854.
Claims priority of application No. 2022-107641 (JP), filed on Jul. 4, 2022.
Prior Publication US 2024/0003490 A1, Jan. 4, 2024
Int. Cl. F17C 1/12 (2006.01)
CPC F17C 1/12 (2013.01) [F17C 2201/0109 (2013.01); F17C 2203/032 (2013.01); F17C 2203/0391 (2013.01); F17C 2203/0624 (2013.01); F17C 2203/0629 (2013.01); F17C 2203/0636 (2013.01); F17C 2203/066 (2013.01); F17C 2209/22 (2013.01); F17C 2221/012 (2013.01); F17C 2227/0135 (2013.01); F17C 2227/0178 (2013.01); F17C 2270/0168 (2013.01); F17C 2270/0184 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An in-vehicle liquid hydrogen tank, comprising:
an inner tank configured to store liquid hydrogen;
an outer tank that accommodates the inner tank;
a heat-insulation material that is disposed in a heat-insulation clearance as a clearance between the inner tank and the outer tank and holds the inner tank to be separated from an inner surface of the outer tank; and
a spacer that is partially arranged in the heat-insulation clearance, the spacer being configured to maintain a constant thickness of the heat-insulation clearance, wherein
the heat-insulation clearance has:
a vacuum area that is not filled with the heat-insulation material; and
an area that is filled with the heat-insulation material and thus allows the inner tank to be surface-supported by the heat-insulation material,
the heat-insulation material is accommodated in a sealed bag, and
both inside of the sealed bag and the heat-insulation clearance are vacuum-suctioned.