公开(公告)号：US20230400152A1

公开(公告)日：2023-12-14

申请号：US18295876

申请日：2023-04-05

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Naoki OGIWARA ,  Yoshihiro NAKATA ,  Tomonori KANEKO

IPC: F17C5/00

CPC classification number: F17C5/007 ,  F17C2250/0439 ,  F17C2250/0636 ,  F17C2250/043 ,  F17C2250/0694 ,  F17C2250/032 ,  F17C2250/034 ,  F17C2270/0168 ,  F17C2205/0335 ,  F17C2221/012 ,  F17C2265/065 ,  F17C2270/0184

Abstract: A gas filling system includes a receiver that receives a temperature in a high pressure container measured by a temperature sensor by communication, and a flow rate control device that controls a flow rate of gas for filling, a pressure sensor that measures a pressure of gas for filling, and a controller. The controller controls the flow rate control device such that the high pressure container is filled with the gas at a preset first pressure rise rate, until a filling rate of the high pressure container reaches a preset first target filling rate, and the high pressure container is filled with the gas at a preset second pressure rise rate lower than the first pressure rise rate, until the filling rate of the high pressure container reaches, from the first target filling rate, a preset second target filling rate higher than the first target filling rate.

公开(公告)号：US20190247978A1

公开(公告)日：2019-08-15

申请号：US16269876

申请日：2019-02-07

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Yoshihiro NAKATA

IPC: B24C1/10 ,  F17C1/02

CPC classification number: B24C1/10 ,  F17C1/02 ,  F17C2201/0109 ,  F17C2203/012 ,  F17C2203/0604 ,  F17C2203/0619 ,  F17C2203/0639 ,  F17C2203/0646 ,  F17C2203/067 ,  F17C2209/2154 ,  F17C2209/232

Abstract: A manufacturing method for a high pressure tank includes preparing a liner including a cylindrical body portion and a pair of side end portions, forming a reinforcing layer by winding fiber-reinforced resin around an outer peripheral surface of the liner, carrying out shot peening by shooting a shot material towards an inner periphery region of a boundary between the body portion and each of the side end portions, and carrying out autofrettage after the reinforcing layer is formed and the shot peening is carried out. The autofrettage is carried out by applying internal pressure to the liner such that the liner is plastically deformed and then eliminating the internal pressure such that compression stress is applied to the liner.

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.