公开(公告)号：US20210190266A1

公开(公告)日：2021-06-24

申请号：US17195862

申请日：2021-03-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayoshi TAKAMI ,  Takashi INOH

IPC: F17C1/16

Abstract: A high-pressure tank includes: a liner; an epoxy resin; a fiber; and a fiber-reinforced epoxy resin layer formed on an outer side of the liner. The epoxy resin has a contact angle on polytetrafluoroethylene ((C2F4)n) of 70° or less in an uncured state.

公开(公告)号：US20210381647A1

公开(公告)日：2021-12-09

申请号：US17411456

申请日：2021-08-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji KATANO ,  Masayoshi TAKAMI ,  Motohiro MIZUNO

IPC: F17C1/06 ,  B29C70/70 ,  B29C70/32

Abstract: A high-pressure tank comprises a liner, a strengthening layer including a first helical layer and a first hoop layer each including a carbon fiber, and a protective layer including a second helical layer and a second hoop layer each including a glass fiber, in this order. The high-pressure tank is provided with a stress-generating portion, a reinforcement layer includes a first area α overlapping the stress-generating portion in a stacking direction and a second area β that is an area except for the first area, and a one-round portion including a final crossing portion at an end of winding of the glass fiber constituting the second hoop layer overlaps the second area in the stacking direction.

公开(公告)号：US20210237367A1

公开(公告)日：2021-08-05

申请号：US17143434

申请日：2021-01-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayoshi TAKAMI

IPC: B29C65/66 ,  F17C1/06

Abstract: A manufacturing method of a high pressure tank includes at least : shrinking a liner by cooling the liner, inserting the liner into a cylindrical member to cover a body of the liner in a shrunk state by the cylindrical member, expanding the liner in the shrunk state to fit the cylindrical member to the body by raising the temperature of the liner inserted into the cylindrical member, joining circumferential edge portions of dome members to circumferential edge portions of the cylindrical member that is fit to the body, to cover end portions by the dome members, and form a first reinforcing layer.

公开(公告)号：US20190390821A1

公开(公告)日：2019-12-26

申请号：US16432019

申请日：2019-06-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji KATANO ,  Masayoshi TAKAMI ,  Motohiro MIZUNO

IPC: F17C1/06 ,  B29C70/32 ,  B29C70/70

Abstract: A high-pressure tank comprises a liner, a strengthening layer including a first helical layer and a first hoop layer each including a carbon fiber, and a protective layer including a second helical layer and a second hoop layer each including a glass fiber, in this order. The high-pressure tank is provided with a stress-generating portion, a reinforcement layer includes a first area α overlapping the stress-generating portion in a stacking direction and a second area β that is an area except for the first area, and a one-round portion including a final crossing portion at an end of winding of the glass fiber constituting the second hoop layer overlaps the second area in the stacking direction.

公开(公告)号：US20230070235A1

公开(公告)日：2023-03-09

申请号：US17894334

申请日：2022-08-24

Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kazuhiko UMEMOTO ,  Kumi AMANO ,  Tomoyuki KINJO ,  Hiroaki YONEYAMA ,  Kazuki FUJII ,  Masayoshi TAKAMI ,  Chihiro UCHIMURA

IPC: F17C1/06

Abstract: A high-pressure tank comprising: a resin liner for a high-pressure tank including at least one opening portion; an aluminum mouth portion attached to the opening portion; and a reinforcement layer formed on an outer surface of the liner, wherein an aluminum oxide coating is formed on a surface of the aluminum mouth portion, the aluminum oxide coating includes a porous surface layer in which columns with an average height of 10 to 100 nm are arranged in a dispersed state, an average value of a percentages of the protruding portion area of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 5.0 to 26.0%, and an average value of the numbers of the columns in randomly sampled 400 nm square visual fields of the porous surface layer is 500 to 2000.

公开(公告)号：US20210237335A1

公开(公告)日：2021-08-05

申请号：US17144608

申请日：2021-01-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tatsunori SHINDO ,  Kazuyo WAKASUGI ,  Masayoshi TAKAMI ,  Yasunori NOSAKA

IPC: B29C53/60 ,  F17C1/06

Abstract: A method for manufacturing a high-pressure tank including a liner that stores gas and a reinforcing layer made of a fiber-reinforced resin and covering an outer surface of the liner includes: a first step of forming a cylinder member made of the fiber-reinforced resin; a second step of forming two dome members made of the fiber-reinforced resin; and a third step of forming a reinforcing body that is the reinforcing layer by joining both end portions of the cylinder member and end portions of the two dome members, respectively. The first step includes forming the cylinder member by winding a release material around a mandrel and winding the fiber-reinforced resin on the release material.

公开(公告)号：US20180180222A1

公开(公告)日：2018-06-28

申请号：US15843529

申请日：2017-12-15

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Naoki UEDA ,  Masayoshi TAKAMI ,  Koichiro HAYASHI ,  Takashi INOH

IPC: F17C1/16

CPC classification number: F17C1/16 ,  F17C2201/0109 ,  F17C2201/056 ,  F17C2201/058 ,  F17C2203/012 ,  F17C2203/0604 ,  F17C2203/0621 ,  F17C2203/0629 ,  F17C2203/0643 ,  F17C2203/066 ,  F17C2203/0668 ,  F17C2203/0673 ,  F17C2205/0305 ,  F17C2205/0323 ,  F17C2205/0394 ,  F17C2209/2154 ,  F17C2209/232 ,  F17C2221/012 ,  F17C2221/014 ,  F17C2223/0123 ,  F17C2223/036 ,  F17C2270/0105 ,  F17C2270/0168 ,  F17C2270/0184 ,  F17C2270/0189

Abstract: A high pressure tank includes a liner, a reinforcing layer which includes a first thermosetting resin and fibers and is formed on the liner, and a protective layer which includes a second thermosetting resin having a lower gelling temperature than the a gelling temperature of first thermosetting resin and is formed on the reinforcing layer.

公开(公告)号：US20210270419A1

公开(公告)日：2021-09-02

申请号：US17178667

申请日：2021-02-18

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayoshi TAKAMI ,  Yoshihiro NAKATA

IPC: F17C1/02

Abstract: A liner of a high-pressure tank is made of a material having a shrinkage amount that is calculated by an equation below being 0 or less, the equation being shrinkage amount=−1.533538e−03*x1−3.82355406*x2−7.81992308*x3+1.89342646e−01*x4−7.84558163e−03*x5+1.15956871e−03*x1x2+6.29564353e−04*x1x3−9.34550213e−06*x1x4−6.59253799e−04*x1x5−1.52692282e+00*x2{circumflex over ( )}2+1.67290964e+00*x2x3−1.85202252e−02*x2x4−1.79615713e+00*x2x5+2.37163664e+00*x3{circumflex over ( )}2−1.17467786e−02*x3x4−9.04442817e−01*x3x5−1.86321584e−03*x4{circumflex over ( )}2+6.62631756e−03*x4x5+1.27572698e*x5{circumflex over ( )}2.

公开(公告)号：US20210254787A1

公开(公告)日：2021-08-19

申请号：US17148672

申请日：2021-01-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayoshi TAKAMI ,  Yoshihiro NAKATA ,  Yasunori NOSAKA

IPC: F17C1/16

Abstract: A high-pressure tank includes: a liner including a body portion having a tubular shape and side end portions each having a dome shape, the side end portions being provided on opposite sides of the body portion; and a reinforcement layer made of fiber reinforced resin covering an outer surface of the liner. The reinforcement layer includes a tubular member covering the body portion and dome members joined to opposite sides of the tubular member so as to cover the side end portions. The liner includes a first resin layer defining a storage space for storing gas and a second resin layer provided between the first resin layer and at least the tubular member. An elastic modulus of a second resin constituting the second resin layer is lower than an elastic modulus of a first resin constituting the first resin layer.

公开(公告)号：US20210245447A1

公开(公告)日：2021-08-12

申请号：US17159650

申请日：2021-01-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masayoshi TAKAMI

IPC: B29C65/00 ,  B29C65/02

Abstract: In a manufacturing method of a high-pressure tank, a tubular member and dome members are prepared. The tubular member and the dome members are a plurality of divided bodies having a shape in which a reinforcement layer is divided and made of fiber reinforced resin so as to include contact surfaces that are in contact with an outer surface of a liner. Then, the contact surfaces are covered by resin layers constituting the liner. Next, the reinforcement layer and the liner are formed by joining the tubular member and the dome members to each other and joining the resin layers to each other.