High pressure tank and method of manufacturing same

Patent metadata

Field	Value
Publication number	US-11262024-B2
Application number	US-201916278954-A
Country	US
Kind code	B2
Filing date	Feb 19, 2019
Priority date	Feb 21, 2018
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

A high pressure tank includes: a supplying/discharging hole; and a cap having formed therein a cap-side path which is a part of a flow path. A repelling coating interposes between a liner-side end surface facing a resin-made liner, of a flange section configuring the cap, or a flange section-facing outer surface facing the flange section, of the liner. The repelling coating is formed of a material that repels a matrix resin of a fiber-reinforced resin configuring a reinforced layer.

First claim

What is claimed is:

1. A high pressure tank comprising: a liner formed of a resin; a reinforced layer formed of a fiber-reinforced resin, the reinforced layer covering an outer surface of the liner; and a cap having formed therein a supplying and discharging hole for supplying a fluid to the liner or discharging the fluid from the liner,
the cap including: a flange section interposing between the liner and the reinforced layer; and an exposed section exposed from the reinforced layer,
the flange section including: a liner-side end surface facing the liner; and a reinforced layer-side end surface facing the reinforced layer, there being formed in the flange section a flow path running from the liner-side end surface to the supplying and discharging hole,
the liner including a flange section-facing outer surface facing the flange section, and
there being formed on at least one of the liner-side end surface of the flange section, or the flange section-facing outer surface of the liner, in a region avoiding the flow path, a repelling coating that repels a matrix resin of the fiber-reinforced resin.

2. The high pressure tank according to claim 1 , wherein the matrix resin is formed of an epoxy-based resin, and the repelling coating is formed of a fluorine-based resin or a silicone-based resin.

3. The high pressure tank according to claim 1 , wherein a protective member is installed interposed between the flange section and the reinforced layer, the protective member including a flange section-facing inner surface facing the flange section, and there is formed on at least one of the reinforced layer-side end surface of the flange section, or the flange section-facing inner surface of the protective member a second repelling coating that repels the matrix resin.

4. The high pressure tank according to claim 3 , wherein the second repelling coating is formed of a fluorine-based resin or a silicone-based resin.

5. The high pressure tank according to claim 1 , wherein a protective member is installed interposed between the flange section and the reinforced layer, the protective member including a flange section-facing inner surface facing the flange section, and there is formed on at least one of the reinforced layer-side end surface of the flange section, or a flange section-facing inner surface of the protective member a second repelling coating that repels the matrix resin, and wherein the protective member extends from a position between the flange section and the reinforced layer to a position between the resin liner and the reinforced layer.

Assignees

• Honda Motor Co Ltd

Inventors

• Kanezaki Toshihiko
• Ishikawa Yusuke

Classifications

• F17C2201/0109

  with exteriorly curved end-piece · CPC title

• F17C2203/0619

  with two layers · CPC title

• F17C1/00

  Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge (pressurised apparatus for purposes other than storage, see the relevant subclasses such as A62C, B05B; associated with vehicles, see the appropriate subclass of classes B60 - B64; pressure vessels in general F16J12/00 {; autoclaves B01J3/04; tank vehicles B60P3/22; railway tank wagons for carrying fluent materials B61D5/00; accumulators for supplying fluid under pressure F15B1/04; liquefied gas stoves F24C3/00}) · CPC title

• F17C2203/011

  Reinforcing means · CPC title

• F17C2201/056

  Small (<1 m3) · CPC title