Manufacturing method of high-pressure tank

Patent metadata

Field	Value
Publication number	US-11506337-B2
Application number	US-202117333288-A
Country	US
Kind code	B2
Filing date	May 28, 2021
Priority date	Sep 25, 2020
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

A manufacturing method of a high-pressure tank including a reinforcement layer configured of fiber reinforced resin including carbon fiber and a liner provided on an inner side of the reinforcement layer includes: a step (a) of preparing the reinforcement layer including a cylindrical portion and a pair of dome portions, the dome portions disposed at respective ends of the cylindrical portion; a step (b) of forming a film on an inner surface of each of the cylindrical portion and the dome portions without using a polymerization catalyst that is deactivated by a component contained in the reinforcement layer; a step (c) of applying a material of the liner to a surface of the film, the material being an uncured material of the liner and containing the polymerization catalyst; and a step (d) of forming the liner by curing the material of the liner applied through a polymerization reaction.

First claim

What is claimed is:

1. A manufacturing method of a high-pressure tank including a reinforcement layer configured of fiber reinforced resin including carbon fiber and a liner provided on an inner side of the reinforcement layer, the manufacturing method comprising:
a step (a) of preparing the reinforcement layer including a cylindrical portion and a pair of dome portions, the dome portions disposed at respective ends of the cylindrical portion;
a step (b) of forming a film on an inner surface of each of the cylindrical portion and the dome portions without using a polymerization catalyst that is deactivated by a component contained in the reinforcement layer;
a step (c) of applying a material of the liner to a surface of the film, the material being an uncured material of the liner and containing the polymerization catalyst; and
a step (d) of forming the liner by curing the material of the liner applied through a polymerization reaction.

2. The manufacturing method according to claim 1 , wherein the step (b) may include:
a step (b1) of forming a first film on the inner surface of the cylindrical portion of the reinforcement layer;
a step (b2) of forming a second film on the inner surface of each of the dome portions of the reinforcement layer; and
a step (b3) of joining an end of the first film and ends of the second films when the dome portions are joined to the respective ends of the cylindrical portion.

3. The manufacturing method according to claim 2 , wherein:
the step (b1) includes a step of forming the first film such that the end of the first film to be joined to the end of the second film in the step (b3) configures a first inclined surface that is an inclined surface facing a direction inclined with respect to a central axis of the cylindrical portion;
the step (b2) includes a step of forming the second film such that the end of the second film to be joined to the end of the first film in the step (b3) configures a second inclined surface that is an inclined surface facing the first inclined surface; and
the step (b3) includes a step of joining the first inclined surface and the second inclined surface.

4. The manufacturing method according to claim 1 , wherein the step (b) is a step of forming the film using an epoxy resin.

Assignees

• Toyota Motor Co Ltd

Inventors

• Katano Koji

Classifications

• F17C2209/232

  of walls · CPC title

• F17C2209/227

  by adhesive means · CPC title

• F17C1/06 Primary

  built-up from wound-on bands or filamentary material, e.g. wires · CPC title

• F17C2203/066

  Plastics · CPC title

• F17C2205/0397

  on both sides of the pressure vessel · CPC title