US 12,264,778 B2
High-pressure hydrogen container
Hiroshi Okano, Tokyo (JP); Kazuki Matsubara, Tokyo (JP); Shusaku Takagi, Tokyo (JP); Nobuyuki Ishikawa, Tokyo (JP); and Toshio Takano, Tokyo (JP)
Assigned to JFE STEEL CORPORATION, Tokyo (JP)
Appl. No. 18/266,301
Filed by JFE STEEL CORPORATION, Tokyo (JP)
PCT Filed Jan. 28, 2022, PCT No. PCT/JP2022/003190
§ 371(c)(1), (2) Date Jun. 9, 2023,
PCT Pub. No. WO2022/168737, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 2021-016001 (JP), filed on Feb. 3, 2021.
Prior Publication US 2024/0027023 A1, Jan. 25, 2024
Int. Cl. F17C 13/06 (2006.01); F17C 1/00 (2006.01)
CPC F17C 1/005 (2013.01) [F17C 13/06 (2013.01); F17C 2201/0104 (2013.01); F17C 2203/0643 (2013.01); F17C 2221/012 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A high-pressure hydrogen container comprising:
a cylinder body made of metal and configured to store high-pressure hydrogen; and
a lid member that closes an end portion of the cylinder body,
wherein the cylinder body includes
a joining portion that fixes the lid member to the end portion of the cylinder body in a direction along a center axis of the cylinder body,
a cylinder portion that forms an outer shell of a storage portion configured to store high-pressure hydrogen, and
a sealing surface located between the joining portion and the cylinder portion in the direction along the center axis, and formed at an inner surface of the cylinder body,
wherein the lid member includes
a sealing portion that abuts the sealing surface of the cylinder body, and
a fixation portion fixed to the joining portion of the cylinder body,
wherein an area of the sealing surface which the sealing portion abuts is an abutting area,
wherein a clearance portion is formed between the cylinder body and the lid member, the clearance portion being located between the joining portion and the abutting area, the cylinder body being separate from the lid member at the clearance portion, and
wherein at least H<L is satisfied,
where H is a thickness from the abutting area to an outer surface of the cylinder body, and
a portion of the clearance portion in which the cylinder body is furthest from the lid member, in which a stress greater than or equal to a predetermined stress σ is generated, is a stress generation portion, and L is a distance between the abutting area and the stress generation portion being closest to the abutting area.