US 12,241,591 B2
High-pressure tank and manufacturing method of the same
Takuya Kobayashi, Toyota (JP); Koji Katano, Toyota (JP); Takeshi Ishikawa, Toyokawa (JP); and Daisuke Satoya, Nisshin (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Sep. 22, 2022, as Appl. No. 17/934,444.
Claims priority of application No. 2021-170107 (JP), filed on Oct. 18, 2021.
Prior Publication US 2023/0119246 A1, Apr. 20, 2023
Int. Cl. F17C 1/06 (2006.01)
CPC F17C 1/06 (2013.01) [F17C 2201/0109 (2013.01); F17C 2203/012 (2013.01); F17C 2203/0604 (2013.01); F17C 2203/0621 (2013.01); F17C 2203/066 (2013.01); F17C 2209/2163 (2013.01); F17C 2209/232 (2013.01); F17C 2221/012 (2013.01); F17C 2221/033 (2013.01); F17C 2221/035 (2013.01); F17C 2223/035 (2013.01); F17C 2270/0184 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A high-pressure tank, comprising:
a liner that includes a body that is cylindrical in shape and a pair of dome portions each of which is provided at a respective end of the body in an axial direction; and
a reinforcing layer provided on an outer circumferential face of the liner, wherein:
the reinforcing layer includes
a pair of resin members, each of which is provided encircling a respective end portion of an outer circumferential face of the body,
a hoop layer that covers part of the outer circumferential face of the body, between the resin members, and
a helical layer that covers the resin members, the hoop layer, and the dome portions; and wherein:
the resin members are configured to cover part of the body from boundary portions between the body and the dome portions, and increase in thickness from the boundary portions toward a middle of the body,
the thickness of the hoop layer is the same as the greatest thickness of the resin members, and
the resin members are made of a different resin material from the hoop layer.