High pressure gas charging system and high pressure gas charging method using the same

A high pressure gas charging method comprising:

• supplying incompressible fluid into a charging container through a fluid supply part connected to a first side of the charging container;
• deciding whether a pressure of the charging container reaches a predetermined pressure;
• and
• charging a high pressure gas into the charging container through a high pressure gas charging part connected to a second side of the charging container when the pressure of the charging container reaches the predetermined pressure, and removing the incompressible fluid to outside through the fluid supply part as the high pressure gas is charged into the charging container,
• wherein the high pressure gas is charged and the incompressible fluid is removed until the high pressure gas is fully charged into the charging container, and
• wherein the method further comprises:
• measuring, by a temperature sensor, a temperature of the incompressible fluid and a temperature of the high pressure gas, and the temperature of the incompressible fluid in the charging container maintains same as or less than the temperature of the high pressure gas charged into the charging container.

A high pressure gas charging system comprising:

• a gas supply container configured to store a high pressure gas;
• a fluid storage container connected to the gas supply container and configured to store incompressible fluid;
• and
• a charging container connected to each of an upper portion and a lower portion of the fluid storage container, wherein the high pressure gas is charged into the charging container,
• wherein the incompressible fluid stored in the fluid storage container is supplied to the charging container as the high pressure gas stored in the gas supply container is supplied to the fluid storage container,
• wherein the high pressure gas in the fluid storage container is charged into the charging container as the incompressible fluid supplied to the charging container is supplied back to the fluid storage container, wherein the charging container is positioned higher than the fluid storage container such that a hydrostatic pressure is generated by gravity due to a height difference between the charging container and the fluid storage container, and wherein the incompressible fluid supplied to the charging container is supplied back to the fluid storage container due to the hydrostatic pressure generated by gravity.

A high pressure gas charging method comprising:

• injecting a high pressure gas to a fluid storage container from a gas supply container;
• supplying incompressible fluid stored in the fluid storage container to a charging container, as the high pressure gas is injected to the fluid storage container;
• supplying the incompressible fluid back to the fluid storage container from the charging container, when the high pressure gas is fully injected to the fluid storage container;
• and
• charging the high pressure gas injected to the fluid storage container to the charging container, as the incompressible fluid is supplied to the fluid storage container, wherein the charging container is positioned higher than the fluid storage container such that a hydrostatic pressure is generated by gravity due to a height difference between the charging container and the fluid storage container, and wherein the incompressible fluid in the charging container is supplied to the fluid storage container due to the hydrostatic pressure generated by gravity.