KR-102962114-B1 - HYDROGEN CHARGING APPARATUS

KR102962114B1KR 102962114 B1KR102962114 B1KR 102962114B1KR-102962114-B1

Abstract

The present invention relates to a hydrogen storage device. The hydrogen storage device according to the present invention comprises a hydrogen supply unit for supplying hydrogen and an injection unit connected to the hydrogen supply unit and configured to inject hydrogen supplied from the hydrogen supply unit into a charging target. The hydrogen supply unit may include a dispenser buried underground for injecting hydrogen supplied from a hydrogen source into the charging target, and a nozzle hose buried underground and connected to the dispenser and the injection unit, respectively, and configured to supply hydrogen supplied from the dispenser to the injection unit.

Inventors

신민철

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260511
Application Date: 20211220

Claims (14)

A hydrogen supply unit that supplies hydrogen; and It includes an injection unit connected to the hydrogen supply unit and configured to inject hydrogen supplied from the hydrogen supply unit into a charging target. The above hydrogen supply unit A dispenser buried underground and for injecting hydrogen supplied from a hydrogen source into the charging target; and A hydrogen charging device comprising a nozzle hose that is buried underground and connected to the dispenser and the injection part, respectively, and configured to supply hydrogen supplied from the dispenser to the injection part.
In paragraph 1, A hydrogen charging device further comprising a protective housing formed to surround the hydrogen supply unit and buried underground.
In paragraph 2, A hydrogen charging device further comprising a low-temperature maintaining unit provided between the dispenser and the injection unit, for cooling hydrogen flowing inside the nozzle hose to maintain it within a predetermined temperature range.
In paragraph 3, The above low-temperature maintenance unit A low-temperature case having a low-temperature maintaining space configured to accommodate at least a portion of the nozzle hose; and A hydrogen refueling device comprising a cooling unit mounted in the above-mentioned low-temperature maintenance case and configured to cool the above-mentioned low-temperature maintenance space.
In paragraph 4, A hydrogen refueling device configured such that a portion of the cooling unit is disposed inside the low-temperature maintenance case, and the remaining portion of the cooling unit is disposed outside the low-temperature maintenance case and buried underground.
In paragraph 4, A hydrogen charging device further comprising a collection unit that collects hydrogen leaking from the above hydrogen supply unit and supplies it to the above nozzle hose.
In paragraph 6, The above-mentioned collection unit A hydrogen collection jig installed on the upper part of the above-mentioned low-temperature maintenance case and installed inside the above-mentioned protective housing, and having a collection space for collecting hydrogen leaking into the inside of the above-mentioned protective housing; and A hydrogen charging device comprising a collection pipe connected to a through hole formed in the hydrogen collection jig and connected to the nozzle hose, configured to supply hydrogen collected in the hydrogen collection jig to the nozzle hose.
In Paragraph 7, The above-mentioned collection pipe is a hydrogen charging device having a variable length.
In Paragraph 7, The above hydrogen supply unit A hydrogen refueling device further comprising a protective pipe installed to surround the nozzle hose and having a through hole through which the collection pipe passes.
In Paragraph 7, The hydrogen supply unit further includes a three-way valve installed at the portion where the nozzle hose and the collection pipe are connected, configured to selectively switch between a flow path connecting the dispenser and the injection unit and a flow path connecting the hydrogen collection jig and the injection unit. The above-mentioned collection unit further includes an opening/closing valve installed on the collection pipe to selectively communicate the collection space and the collection pipe, and The above hydrogen charging device is a hydrogen charging device further comprising a control unit that controls the operation of the three-way valve and the opening/closing valve.
In paragraph 4, The above hydrogen supply unit A hydrogen refueling device comprising a reel member installed inside the above-mentioned low-temperature maintenance case and configured to allow the nozzle hose to be wound or unwound.
In Paragraph 7, The above-mentioned collection unit A hydrogen charging device further comprising a hydrogen adsorption unit including a heat transfer metal provided between the hydrogen capture jig and the low-temperature maintenance case, and a hydrogen adsorption metal provided on the heat transfer metal and configured to combine with captured hydrogen to form a metal hydride.
In Paragraph 12, The above cooling unit is configured to release waste heat generated when cooling the low-temperature maintenance space to the outside of the low-temperature maintenance case, and The above heat transfer metal is A main body formed to allow leaked hydrogen to pass through and to which the hydrogen adsorption metal is bonded; An extension portion extending downward from the main body portion; and A hydrogen charging device comprising a heating unit that is extended from the end of the extension unit and is configured to face an area provided outside the low-temperature maintenance case in the cooling unit, thereby being heated by waste heat generated in the cooling unit.
In paragraph 2, A hydrogen exhaust line connected to the above-mentioned protective housing and configured to discharge hydrogen inside the above-mentioned protective housing to the outside; A hydrogen sensor installed at the upper part of the protective housing and configured to sense the concentration of hydrogen leaked inside the protective housing; and A hydrogen charging device comprising a control unit that receives a signal from the hydrogen sensor and controls the hydrogen exhaust line to open when the concentration of hydrogen inside the protective housing measured by the hydrogen sensor exceeds a predetermined range.

Description

Hydrogen Charging Apparatus The present invention relates to a hydrogen charging device. Generally, a hydrogen charging system is a system for charging hydrogen to a target that operates using hydrogen as fuel. The hydrogen charging system includes a gas supply unit that supplies hydrogen gas compressed to a high pressure state, and a dispenser equipped with a nozzle for injecting the hydrogen gas supplied from the gas supply unit into the target. Conventional hydrogen refueling systems have the problem that most of the devices, including dispensers, are installed on the ground, making it difficult to utilize ground space, and especially large-scale facilities and non-vehicles cannot be refueled due to interference with the devices constituting the system. In addition, conventional hydrogen refueling systems have a problem in that it is difficult to supply hydrogen at an appropriate temperature (e.g., about -40°C) during the first refueling of a vehicle because the nozzle hose connected to the dispenser is exposed to ambient temperature. In this case, there is a problem in that it is difficult to secure the exact amount of fuel for the vehicle being refueled. In addition, conventional hydrogen refueling systems had a problem where a large amount of hydrogen was wasted because there was no device to capture and recycle hydrogen leaking from the system. Therefore, there is a need for technology that enables large-scale charging of non-vehicle vehicles, supplies hydrogen at low temperatures, and allows for hydrogen recycling. FIG. 1 is a schematic diagram illustrating a hydrogen charging device according to a first embodiment of the present invention, showing the appearance when not charging. FIG. 2 is a schematic diagram illustrating a hydrogen charging device according to a first embodiment of the present invention, showing the appearance during charging. Figure 3 is an enlarged view of part A of Figure 1, showing the nozzle hose, injection part, and collection pipe. Figure 4 is an enlarged view of section B of Figure 3. Figure 5 illustrates the flow of hydrogen during charging in Figure 4. Figure 6 illustrates the flow of hydrogen when not charged in Figure 4. FIG. 7 is a schematic diagram illustrating a hydrogen charging device according to a second embodiment of the present invention. FIG. 8 is a top view of a metal for heat transfer according to a second embodiment of the present invention, viewed from above. FIG. 9 is a schematic diagram illustrating a hydrogen charging device according to a third embodiment of the present invention. Hereinafter, embodiments of the present invention will be described in detail according to the attached drawings. First, the embodiments described below are suitable for illustrating the technical features of the hydrogen refueling device of the present invention. However, the present invention is not limited to the embodiments described below, nor are the technical features of the present invention limited by the described embodiments; various modifications are possible within the technical scope of the present invention. FIG. 1 is a schematic diagram illustrating a hydrogen charging device according to a first embodiment of the present invention, showing the appearance when not charging; FIG. 2 is a schematic diagram illustrating a hydrogen charging device according to a first embodiment of the present invention, showing the appearance when charging; FIG. 3 is an enlarged view of part A of FIG. 1, showing the nozzle hose, injection part, and collection pipe; FIG. 4 is an enlarged view of part B of FIG. 3; FIG. 5 is a diagram showing the flow of hydrogen during charging in FIG. 4; FIG. 6 is a diagram showing the flow of hydrogen when not charging in FIG. 4; FIG. 7 is a schematic diagram illustrating a hydrogen charging device according to a second embodiment of the present invention; FIG. 8 is a top view of a metal for heat transfer according to a second embodiment of the present invention viewed from above; and FIG. 9 is a schematic diagram illustrating a hydrogen charging device according to a third embodiment of the present invention. Referring to FIGS. 1 to 6, a hydrogen charging device (10) according to an embodiment of the present invention includes a hydrogen supply unit (300) and an injection unit (200). The hydrogen supply unit (300) is provided to supply hydrogen and is buried underground. The injection unit (200) is connected to the hydrogen supply unit (300) and may be provided to inject hydrogen supplied from the hydrogen supply unit (300) into the charging target (1). The hydrogen supply unit (300) may include a dispenser (330) and a nozzle hose (340). A dispenser (330) is buried underground and is provided to inject hydrogen supplied from a hydrogen source (310) into a charging target (1). The unexplained symbol G represents the ground. For example, the hydrogen supply source (310) may be a hydrogen trailer installed underground, but is not limited thereto.