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US-12624801-B2 - Hydrogen cartridge and gas supply system

US12624801B2US 12624801 B2US12624801 B2US 12624801B2US-12624801-B2

Abstract

Provided is a tank equipped with a container body to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, a fusible plug provided in the container body and configured to open when a predetermined temperature is reached to release the gas in the tank, and a member that delays heat transfer to the self-closing valve later than to the container body and/or a member that promotes heat transfer to the fusible plug when the hydrogen cartridge is heated.

Inventors

  • Chiaki Kataoka

Assignees

  • TOYOTA JIDOSHA KABUSHIKI KAISHA

Dates

Publication Date
20260512
Application Date
20240529
Priority Date
20230602

Claims (12)

  1. 1 . A hydrogen cartridge comprising: a tank configured to store hydrogen, wherein the tank includes, a container body configured to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, a fusible plug provided in the container body and configured to open when a predetermined temperature is reached to release gas in the tank, and at least one of a member that delays heat transfer to the self-closing valve later than to the container body or a member that promotes heat transfer to the fusible plug when the hydrogen cartridge is heated, a case containing the tank, wherein at least one part of the member that delays heat transfer to the self-closing valve is arranged in the case, and at least one part of the member that promotes heat transfer to the fusible plug is arranged in the case.
  2. 2 . The hydrogen cartridge according to claim 1 , wherein the member that delays heat transfer to the self-closing valve is a heat insulating material provided around the self-closing valve, and the heat insulating material is not arranged around the fusible plug.
  3. 3 . The hydrogen cartridge according to claim 1 , wherein the member that delays heat transfer to the self-closing valve is a heat shielding material arranged with a gap from the self-closing valve, and the heat shielding material is not arranged around the fusible plug.
  4. 4 . The hydrogen cartridge according to claim 1 , wherein the member that promotes heat transfer to the fusible plug is a member with higher thermal conductivity than the container body, the member with higher thermal conductivity being partially arranged on an outer peripheral side of the tank and extends so as to be in contact with the fusible plug.
  5. 5 . The hydrogen cartridge according to claim 1 , wherein the member that promotes heat transfer to the fusible plug is a combustible resin member that is partially arranged on an outer peripheral side of the tank and extends so as to be in contact with the fusible plug.
  6. 6 . A gas supply system comprising: an accommodation portion that accommodates a hydrogen tank, wherein the hydrogen tank includes, a container body configured to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, and a fusible plug provided in the container body and configured to open when a predetermined temperature is reached to release gas in a tank, and the accommodation portion includes at least one of a member that delays heat transfer to the self-closing valve later than to the container body or a member that promotes heat transfer to the fusible plug when a hydrogen cartridge is heated, the case containing the tank, wherein at least one part of the member that delays heat transfer to the self-closing valve is arranged in the case, and at least one part of the member that promotes heat transfer to the fusible plug is arranged in the case.
  7. 7 . The gas supply system according to claim 6 , wherein the member that delays heat transfer to the self-closing valve is a heat insulating material provided in the accommodation portion at a position around the self-closing valve, and the heat insulating material is not arranged at a position around the fusible plug.
  8. 8 . The gas supply system according to claim 6 , wherein the member that delays heat transfer to the self-closing valve is a heat shielding material provided in the accommodation portion at the position around the self-closing valve, and the heat shielding material is not arranged at the position around the fusible plug.
  9. 9 . The gas supply system according to claim 6 , wherein the member that promotes heat transfer to the fusible plug is a member with higher thermal conductivity than the container body, the member with higher thermal conductivity being partially arranged in the accommodation portion and extends so as to be in contact with the fusible plug.
  10. 10 . The gas supply system according to claim 6 , wherein the member that promotes heat transfer to the fusible plug is a combustible resin member that is partially arranged in the accommodation portion and extends so as to be in contact with the fusible plug.
  11. 11 . A hydrogen cartridge comprising: a tank configured to store hydrogen, wherein the tank includes, a container body configured to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, a fusible plug provided in the container body and configured to open when a predetermined temperature is reached to release gas in the tank, and at least one of a member that delays heat transfer to the self-closing valve later than to the container body or a member that promotes heat transfer to the fusible plug when the hydrogen cartridge is heated, and the member that delays heat transfer covers an end surface or an outer periphery of the self-closing valve.
  12. 12 . A gas supply system comprising: an accommodation portion that accommodates a hydrogen tank, wherein the hydrogen tank includes, a container body configured to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, and a fusible plug provided in the container body and configured to open when a predetermined temperature is reached to release gas in a tank, and the accommodation portion includes at least one of a member that delays heat transfer to the self-closing valve later than to the container body or a member that promotes heat transfer to the fusible plug when a hydrogen cartridge is heated, and the member that delays heat transfer covers an end surface or an outer periphery of the self-closing valve.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority to Japanese Patent Application No. 2023-091465 filed on Jun. 2, 2023, incorporated herein by reference in its entirety. BACKGROUND 1. Technical Field The present disclosure relates to a hydrogen cartridge and a gas supply system into which the hydrogen cartridge is installed and which receives hydrogen. 2. Description of Related Art Japanese Unexamined Patent Application Publication No. 2007-099059 discloses that a motorcycle equipped with a fuel cell system is equipped with a replaceable hydrogen cylinder, and when the hydrogen cylinder is empty, the hydrogen cylinder is removed and replaced. SUMMARY In the relevant art, a structure is often used that allows hydrogen to be released using a fusible plug (safety valve) in the event that a hydrogen cylinder is engulfed in flames due to an accident or malfunction, for example. However, before the fusible plug is removed and the hydrogen is released, a valve for supplying hydrogen may be opened by the heat load of the flames, allowing hydrogen to be released in an unexpected direction. The present disclosure provides a hydrogen cartridge that can more reliably function as a safety valve when a hydrogen tank is affected by heat due to flames or the like. In addition, a gas supply system equipped with a hydrogen cartridge will be provided. A first aspect of the disclosure relates to a hydrogen cartridge including a tank. The tank stores hydrogen. The tank includes a container body configured to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, a fusible plug provided in the container body and configured to open when a predetermined temperature is reached to release gas in the tank, and a member that delays heat transfer to the self-closing valve later than to the container body and/or a member that promotes heat transfer to the fusible plug when the hydrogen cartridge is heated. In the first aspect, the member that delays heat transfer to the self-closing valve may be a heat insulating material provided around the self-closing valve, and the heat insulating material may not be arranged around the fusible plug. In the first aspect, the member that delays heat transfer to the self-closing valve may be a heat shielding material arranged with a gap from the self-closing valve, and the heat shielding material may not be arranged around the fusible plug. In the first aspect, the member that promotes heat transfer to the fusible plug may be a member with higher thermal conductivity than the container body, which is partially arranged on an outer peripheral side of the tank and extends so as to be in contact with the fusible plug. In the first aspect, the member that promotes heat transfer to the fusible plug may be a combustible resin member that is partially arranged on an outer peripheral side of the tank and extends so as to be in contact with the fusible plug. The hydrogen cartridge according to the first aspect may further include a case containing the tank. At least one part of the member that delays heat transfer to the self-closing valve may be arranged in the case, and at least one part of the member that promotes heat transfer to the fusible plug may be arranged in the case. A second aspect of the disclosure relates to a gas supply system including an accommodation portion configured to accommodate a hydrogen tank. The hydrogen tank includes a container body configured to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, and a fusible plug provided in the container body and configured to open when a predetermined temperature is reached so as to release gas in the tank, and the accommodation portion includes a member that delays heat transfer to the self-closing valve later than to the container body, and/or a member that promotes heat transfer to the fusible plug when a hydrogen cartridge is heated. In the second aspect, the member that delays heat transfer to the self-closing valve may be a heat insulating material provided in the accommodation portion at a position around the self-closing valve, and the heat insulating material may not be arranged at a position around the fusible plug. In the second aspect, the member that delays heat transfer to the self-closing valve may be a heat shielding material provided in the accommodation portion at the position around the self-closing valve, and the heat shielding material may not be arranged at the position around the fusible plug. In the second aspect, the member that promotes heat transfer to the fusible plug may be a member with higher thermal conductivity than the container body, which is partially arranged in the accommodation portion and extends so as to be in contact with the fusible plug. In the second aspect, the member th