Toyota Jidosha Kabushiki Kaisha

Takuya Kobayashi

Koji Katano

Takeshi Ishikawa

Daisuke Satoya

Naoki Ueda

Yasuhiro Iida

Hironori Nakamura

A tank includes a liner and a reinforcement layer. The liner has a body portion with a cylindrical shape, and a pair of dome-shaped portions respectively provided at both ends of the body portion in an axial direction of the body portion. The reinforcement layer covers the liner and is made of a fiber reinforced resin that is a resin-impregnated fiber bundle. The reinforcement layer includes a part reinforcement layer disposed from an apex side of each of the dome-shaped portions across a boundary between the dome-shaped portion and the body portion to part of the body portion, and an outer hoop layer disposed outside the part reinforcement layer and provided so as to press an end, adjacent to the body portion, of the part reinforcement layer.

Tank

A high-pressure tank includes 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. The reinforcing layer includes a pair of resin rings 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 rings, and a helical layer that covers the resin rings, the hoop layer, and the dome portions. The resin rings 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.

High-pressure tank and manufacturing method of the same

A high-pressure tank includes an assembly of a pipe split body having a pipe liner and a pipe reinforcement layer covering an outer circumferential surface of the pipe liner, first dome split body having a first dome liner and a first dome reinforcement layer covering an outer circumferential surface of the first dome liner, and second dome split body having a second dome liner and a second dome reinforcement layer covering an outer circumferential surface of the second dome liner. The pipe split body and the first dome split body are assembled such that the first dome liner is located in the outer portion of the high-pressure tank relative to the pipe liner. The pipe split body and the second dome split body are assembled such that the second dome liner is located in the outer portion of the high-pressure tank relative to the pipe liner.

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Toyota, Japan

Takuya Kobayashi