High-pressure gas storage container and method for producing high-pressure gas storage container

Patent metadata

Field	Value
Publication number	US-10940663-B2
Application number	US-201616081441-A
Country	US
Kind code	B2
Filing date	Sep 29, 2016
Priority date	Mar 4, 2016
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

A high-pressure gas storage container includes a liner and a reinforcing layer. The liner houses a high-pressure gas. The reinforcing layer is formed by winding a plurality of strip-shaped reinforcing members around an outer perimeter surface of the liner. The reinforcing members are made of a plurality of reinforcing fibers that are impregnated with a resin. At least a portion of the reinforcing fibers is irradiated with plasma.

First claim

The invention claimed is:

1. A high-pressure gas storage container comprising:
a liner for housing high-pressure gas; and
a reinforcing layer including a plurality of strip-shaped reinforcing members wound around an outer perimeter surface of the liner;
the reinforcing members including a plurality of reinforcing fibers that are impregnated with resin,
the liner comprising a body portion having in a center with a tubular shape extending in an axial direction, a pair of mirror portions provided on opposite sides of the body portion with respect the axial direction and curved to taper outwardly in the axial direction, and a pair of shoulder portions located at boundaries between an inner perimeter surface of the body portion and inner perimeter surfaces of the mirror portions, and
at least the reinforcing fibers of the reinforcing members located at the shoulder portions of the body portion having been irradiated with plasma.

2. The high-pressure gas storage container according to claim 1 , wherein
the reinforcing layer includes a hoop layer having one of the reinforcing members wound around the body portion along the circumferential direction, and a helical layer having one of the reinforcing members wound around the body portion and the mirror portions in a spiral shape, and
the reinforcing fibers that constitute the reinforcing member that is wound in the helical layer having been irradiated with the plasma.

3. The high-pressure gas storage container according to claim 2 , wherein
the reinforcing fibers that constitute the reinforcing member that is wound in the hoop layer having been irradiated with the plasma, and
the reinforcing fibers that constitute the reinforcing member that is wound in the hoop layer is configured such that an amount of the plasma that has been irradiated thereon is less than that of the reinforcing fibers that constitute the reinforcing member that is wound in the helical layer.

4. The high-pressure gas storage container according to claim 2 , wherein
the reinforcing fibers that constitute the reinforcing member that is wound in the hoop layer has not been irradiated with plasma.

5. The high-pressure gas storage container according to claim 2 , wherein
the helical layer includes a first helical layer defined by the reinforcing member wound at an angle that is tilted from the axial direction by a first tilt angle, and a second helical layer defined by the reinforcing member wound at an angle that is tilted from the axial direction by a second tilt angle, which is smaller than the first tilt angle, and
the reinforcing fibers that constitute the reinforcing member that is wound in the first helical layer is configured such that an amount of the plasma that has been irradiated thereon is less than that of the reinforcing fibers that constitute the reinforcing member that is wound in the second helical layer.

6. The high-pressure gas storage container according to claim 5 , wherein
the first helical layer is defined by the reinforcing member wound at an angle that is tilted by 55 degrees or more with respect to the axial direction, and
the second helical layer is defined by the reinforcing member wound at an angle that is tilted by less than 55 degrees with respect to the axial direction.

Assignees

• Nissan Motor

Inventors

• Takemoto Shinichiro
• Uchida Hiroshi
• Kono Kentaro

Classifications

• B29C70/326

  by rotating the mould around its axis of symmetry · CPC title

• B29C66/934

  by controlling or regulating the speed · CPC title

• B29C53/62

  rotatable about the winding axis · CPC title

• B29C66/028

  Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle radiation (B29C65/14 takes precedence; non-mechanical surface treatment of plastics in general B29C59/08 - B29C59/16) · CPC title

• B29C53/602

  for tubular articles having closed or nearly closed ends, e.g. vessels, tanks, containers · CPC title