Solid-state hydrogen storage gas filling and discharging auxiliary device for hydrogen energy two-wheeled vehicle

Abstract

The utility model provides a kind of hydrogen energy two-wheeled vehicle solid-state hydrogen storage gas charging and discharging auxiliary device, it is related to hydrogen energy storage and application technical field, comprising: solid-state hydrogen storage bottle, the bottle mouth end of solid-state hydrogen storage bottle is connected with the high-pressure inlet gas port of vortex tube by hydrogen release pipeline and communicates;The bottle body outside of solid-state hydrogen storage bottle is around with heat exchange pipeline;The utility model pre-cools compressed hydrogen by vortex tube, and combines heat exchange pipeline absorption reaction heat, effectively suppress the temperature rise in hydrogen charging process, to improve the adsorption capacity of solid-state hydrogen storage material, realize faster hydrogen charging speed and higher hydrogen storage capacity, and simultaneously by using the hot air flow generated by vortex tube to heat hydrogen storage bottle, actively overcome the endothermic effect in hydrogen release process, maintain solid-state powder at suitable hydrogen release temperature, ensure the stable, efficient output of hydrogen, solve the problem that solid-state hydrogen storage bottle in prior art is not high in hydrogen charging and discharging efficiency due to improper temperature control in gas charging and discharging process.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy storage and application technology, and in particular to a solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles. Background Technology

[0002] Hydrogen energy, as a clean and efficient energy carrier, has broad application prospects in the transportation sector, especially in two-wheeled vehicles, where it offers significant advantages such as zero emissions and low noise. Solid-state hydrogen storage technology, with its high hydrogen storage density, low storage pressure, and relatively high safety, has become an important development direction for hydrogen storage in hydrogen fuel cell two-wheeled vehicles.

[0003] However, solid hydrogen storage materials (such as metal hydrides and adsorbents) exhibit significant endothermic and exothermic effects during adsorption-desorption reactions with hydrogen. During hydrogen charging, the adsorption reaction between the solid powder and hydrogen releases a large amount of endothermic heat. If high-pressure compressed hydrogen is directly introduced, the energy carried by the solid powder and the exothermic reaction will combine, causing a sharp rise in the internal temperature of the hydrogen storage tank. Excessively high temperatures significantly reduce the adsorption capacity of solid hydrogen storage materials, thus affecting the charging rate, efficiency, and final hydrogen storage density.

[0004] During hydrogen release, the hydrogen storage tank is typically heated to overcome the adsorption energy of the solid hydrogen storage material and facilitate its release. However, when solid powder slowly releases hydrogen, its endothermic and exothermic properties also lead to heat absorption (suppressing hydrogen absorption during cooling), causing a temperature drop that may actually reduce hydrogen release efficiency. Existing hydrogen release heating methods may be inefficient or difficult to precisely control the heating amplitude and timing.

[0005] Therefore, there is an urgent need for an auxiliary system that can intelligently and efficiently control the temperature of solid hydrogen storage cylinders during the filling and discharging process, in order to ensure high efficiency and high hydrogen storage density during filling, while ensuring the stability and efficiency of the hydrogen discharging process, thereby improving the overall performance of hydrogen-powered two-wheeled vehicles. Utility Model Content

[0006] This utility model relates to a solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles, which solves the problem of low charging and discharging efficiency of solid hydrogen storage cylinders due to improper temperature control during the charging and discharging process in the prior art.

[0007] This utility model provides a solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles, specifically including: a solid hydrogen storage bottle, the bottle mouth of which is connected to the high-pressure gas inlet of a vortex tube through a hydrogen discharge pipeline, and a one-way valve a is installed on the hydrogen discharge pipeline; a hydrogen charging pipeline is connected to the hydrogen discharge pipeline, and a one-way valve b is installed on the hydrogen charging pipeline. The solid hydrogen storage cylinder is surrounded by a heat exchange pipeline. The cold gas outlet of the vortex tube is connected to the heat exchange pipeline via a cold gas delivery pipeline. The heat exchange pipeline is connected to the hydrogen release pipeline via a confluence pipeline b, and the connection point is located in the pipeline area between the mouth of the solid hydrogen storage cylinder and the one-way valve a. The hot gas outlet of the vortex tube is connected to the heat exchange pipeline via a hot gas delivery pipeline. A solenoid valve b is installed on the hot gas delivery pipeline. A hydrogen supply pipeline is connected to the heat exchange pipeline, which supplies hydrogen to the fuel cell. A pressure reducing valve is installed on the hydrogen supply pipeline.

[0008] Furthermore, a manifold a is connected to the hot gas delivery pipeline. The outlet end of the manifold a is connected to the hydrogen release pipeline, and the connection point is located in the pipeline area between the mouth of the solid hydrogen storage bottle and the one-way valve a. A solenoid valve a is installed on the manifold a.

[0009] Furthermore, during hydrogen charging, solenoid valve a is in the open state while solenoid valve b is in the closed state; during hydrogen discharging, solenoid valve b is in the open state while solenoid valve a is in the closed state.

[0010] Furthermore, it also includes a temperature detector, which is used to monitor the internal temperature of the solid hydrogen storage cylinder.

[0011] This utility model provides a solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles, which has the following beneficial effects: This invention uses a vortex tube to pre-cool compressed hydrogen and combines it with a heat exchange pipe to absorb the heat of reaction, effectively suppressing the temperature rise during hydrogen charging. This improves the adsorption capacity of the solid hydrogen storage material, enabling faster charging speed and higher hydrogen storage capacity. At the same time, by using the hot airflow generated by the vortex tube to heat the hydrogen storage bottle, the endothermic effect during hydrogen release is actively overcome, maintaining the solid powder at a suitable hydrogen release temperature and ensuring stable and efficient hydrogen output.

[0012] This invention, combined with a temperature detector, allows the system to intelligently adjust the working state of the vortex tube and the utilization of hot and cold airflow based on real-time temperature feedback, thereby achieving precise control of the hydrogen storage tank temperature.

[0013] The vortex tube and heat exchange pipe of this invention have a relatively simple structure and are easy to integrate into the limited space of a hydrogen-powered two-wheeled vehicle, reducing the complexity and weight of the system. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this utility model is shown.

[0017] List of reference numerals 1. Solid hydrogen storage cylinder; 101. Hydrogen release pipeline; 102. One-way valve a; 2. Vortex tube; 201. Cold air delivery pipeline; 202. Hot air delivery pipeline; 203. Combination pipeline a; 204. Solenoid valve a; 205. Solenoid valve b; 3. Hydrogen charging pipeline; 301. Check valve b; 4. Heat exchange pipeline; 401. Combination pipeline b; 402. Hydrogen supply pipeline; 403. Pressure reducing valve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example: Please refer to Figure 1 : This invention proposes a solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles, comprising: a solid hydrogen storage bottle 1, the bottle body of which is filled with solid powder that absorbs hydrogen, wherein the solid powder refers to a solid material that can reversibly adsorb or store hydrogen, such as metal hydrides, MCHs (chemical hydrides), MOFs (metal-organic frameworks), carbon-based adsorbent materials, etc.; furthermore, the outer body of the solid hydrogen storage bottle 1 is designed with a structure that facilitates the winding of heat exchange pipes 4, and the outer wall of the bottle body has high thermal conductivity to achieve efficient heat exchange; the bottle mouth of the solid hydrogen storage bottle 1 is connected to the high-pressure inlet of the vortex tube 2 through a hydrogen discharge pipe 101, and a one-way valve a102 is installed on the hydrogen discharge pipe 101; a hydrogen charging pipe 3 is connected to the hydrogen discharge pipe 101, and a one-way valve b301 is installed on the hydrogen charging pipe 3; A heat exchange pipe 4 is arranged around the outside of the solid hydrogen storage cylinder 1. The heat exchange pipe 4 is made of a material with high thermal conductivity, such as copper, aluminum, or a surface-treated alloy. The pipe fits tightly against the body of the solid hydrogen storage cylinder 1 and has a certain degree of flexibility to adapt to the cylinder structure, maximizing the heat transfer area and efficiency. The cold gas outlet of the vortex tube 2 is connected to the heat exchange pipe 4 through the cold gas delivery pipe 201. The heat exchange pipe 4 is connected to the hydrogen release pipe 101 through the confluence pipe b401, and the connection point is located at the mouth end of the solid hydrogen storage cylinder 1. The pipeline area between the vortex tube 2 and the one-way valve a102; the hot gas outlet of the vortex tube 2 is connected to the heat exchange pipeline 4 through the hot gas delivery pipeline 202. The hot gas delivery pipeline 202 is equipped with a solenoid valve b205. The heat exchange pipeline 4 is connected to a hydrogen supply pipeline 402, which supplies hydrogen to the fuel cell. The hydrogen supply pipeline 402 is equipped with a pressure reducing valve 403, which is used to reduce the high-pressure hydrogen output from the solid hydrogen storage cylinder 1 to the stable working pressure required by the fuel cell, so as to ensure the safe and efficient operation of the fuel cell. It also includes a temperature detector, which is used to monitor the internal temperature of the solid hydrogen storage cylinder 1.

[0020] The hot gas delivery pipeline 202 is connected to a manifold a203, the outlet of which is connected to the hydrogen release pipeline 101. The connection point is located in the pipeline area between the mouth of the solid hydrogen storage cylinder 1 and the one-way valve a102. A solenoid valve a204 is installed on the manifold a203. When filling with hydrogen, the solenoid valve a204 is in the open state, while the solenoid valve b205 is in the closed state. When releasing hydrogen, the solenoid valve b205 is in the open state, while the solenoid valve a204 is in the closed state.

[0021] The working principle of this embodiment: Hydrogen charging stage: External high-pressure compressed hydrogen enters hydrogen discharge line 101 through hydrogen charging line 3 (at this time, one-way valve b301 is open to prevent hydrogen backflow), and is then transported to the high-pressure inlet of vortex tube 2. The high-pressure hydrogen rotates and expands at high speed inside vortex tube 2, resulting in energy separation. The gas energy in the axial region of the tube decreases, forming a low-temperature gas flow, which is discharged from the cold gas outlet. The gas energy accumulates in the inner wall region of the tube, forming a high-temperature gas flow, which is discharged from the hot gas outlet. At this time, solenoid valve a204 is opened and solenoid valve b205 is closed, which orients the subsequent gas flow path. The low-temperature airflow from the cold gas outlet of the vortex tube 2 enters the heat exchange pipe 4 wrapped around the outer wall of the solid hydrogen storage bottle 1 through the cold gas delivery pipe 201. When the low-temperature airflow flows in the pipe, it exchanges heat with the solid hydrogen storage bottle 1 through the pipe wall, directly carrying away the heat of the outer wall of the solid hydrogen storage bottle 1, and actively absorbing the reaction heat generated by the adsorption of hydrogen by the solid hydrogen storage material in the solid hydrogen storage bottle 1, avoiding the decrease in adsorption capacity due to the increase in temperature inside the bottle. It is then transported to the hydrogen release pipe 101 area between the bottle mouth end of the solid hydrogen storage bottle 1 and the one-way valve a102 through the confluence pipe b401. Simultaneously, the high-temperature gas flow from the hot gas outlet of the vortex tube 2 is transported via the hot gas delivery pipeline 202 and the merging pipeline a203 (with the one-way valve a102 in the open state and the solenoid valve b205 in the closed state) to the hydrogen release pipeline 101 area between the bottle mouth of the solid hydrogen storage bottle 1 and the one-way valve a102. This allows the gas to merge with the hydrogen flowing out from the heat exchange pipeline 4, which has absorbed some of the heat from the bottle, in a certain proportion. The merged hydrogen mixture then enters the solid hydrogen storage bottle 1. In this way, the hot and cold gas flows generated by the vortex tube 2 are fully utilized, and combined with the heat absorption function of the heat exchange pipeline 4, the temperature of the hydrogen entering the solid hydrogen storage bottle 1 is precisely controlled. This maintains the internal temperature of the solid hydrogen storage bottle 1 within a temperature range where the solid powder has a high hydrogen absorption efficiency, thereby improving the hydrogen filling rate and hydrogen storage density. Furthermore, the temperature detector monitors the internal temperature of the solid hydrogen storage bottle 1 in real time, and its detection signal can be fed back to the control system to adjust the inlet flow rate or pressure of the vortex tube 2, or to control the merging ratio of the hot and cold gas flows, in order to optimize the temperature control effect. Hydrogen release phase: When the valve of solid hydrogen storage cylinder 1 is opened, the high-pressure hydrogen gas inside the cylinder enters the hydrogen release pipeline 101. The hydrogen gas is delivered to the high-pressure inlet of the vortex tube 2, driving the vortex tube 2 to separate the low-temperature gas flow and the high-temperature gas flow again. At this time, the solenoid valve a204 is closed and the solenoid valve b205 is opened. The high-temperature gas flow from the hot gas outlet of the vortex tube 2 enters the heat exchange pipeline 4 through the hot gas delivery pipeline 202. When the high-temperature gas flow is flowing in the pipeline, it transfers heat to the solid hydrogen storage cylinder 1 through the pipeline wall. Through heat exchange with the body of the solid hydrogen storage cylinder 1, it transfers heat to the solid hydrogen storage cylinder 1, thereby heating the solid powder, overcoming the adsorption energy, promoting the desorption and release of hydrogen gas, and suppressing the temperature drop caused by the heat absorption accompanying the release of hydrogen. At the same time, the temperature of the hydrogen gas in the pipeline also decreases due to the absorption of heat. The hot air behind the heating bottle then merges with the low-temperature airflow from the cold air outlet of the vortex tube 2 in the heat exchange pipe 4. The merged hydrogen is then transported to the pressure reducing valve 403 through the hydrogen supply pipe 402. The pressure reducing valve 403 reduces the hydrogen pressure to the working pressure adapted to the fuel cell, and finally delivers it stably to the fuel cell to generate electricity, providing power for the hydrogen-powered two-wheeled vehicle.

Claims

1. A solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles, characterized in that, include: A solid hydrogen storage cylinder (1) is provided, with its bottle mouth connected to the high-pressure inlet of a vortex tube (2) via a hydrogen discharge pipeline (101), and a one-way valve a (102) is installed on the hydrogen discharge pipeline (101); a hydrogen charging pipeline (3) is connected to the hydrogen discharge pipeline (101), and a one-way valve b (301) is installed on the hydrogen charging pipeline (3). The solid hydrogen storage cylinder (1) is surrounded by a heat exchange pipe (4); the cold gas outlet of the vortex tube (2) is connected to the heat exchange pipe (4) through a cold gas delivery pipe (201), and the heat exchange pipe (4) is connected to the hydrogen release pipe (101) through a confluence pipe (401), and the connection point is located in the pipe area between the bottle mouth of the solid hydrogen storage cylinder (1) and the one-way valve a (102); the hot gas outlet of the vortex tube (2) is connected to the heat exchange pipe (4) through a hot gas delivery pipe (202), a solenoid valve b (205) is installed on the hot gas delivery pipe (202), and a hydrogen supply pipe (402) is connected to the heat exchange pipe (4), which supplies hydrogen to the fuel cell, and a pressure reducing valve (403) is installed on the hydrogen supply pipe (402).

2. The solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles according to claim 1, characterized in that, The hot gas delivery pipeline (202) is connected to a merging pipeline a (203). The outlet end of the merging pipeline a (203) is connected to the hydrogen release pipeline (101), and the connection position is located in the pipeline area between the bottle mouth end of the solid hydrogen storage cylinder (1) and the one-way valve a (102). A solenoid valve a (204) is installed on the merging pipeline a (203).

3. The solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles according to claim 2, characterized in that, When charging with hydrogen, solenoid valve a (204) is in the open state, while solenoid valve b (205) is in the closed state; when discharging hydrogen, solenoid valve b (205) is in the open state, while solenoid valve a (204) is in the closed state.

4. The solid hydrogen storage charging and discharging auxiliary device for hydrogen-powered two-wheeled vehicles according to claim 3, characterized in that, It also includes a temperature detector, which is used to monitor the internal temperature of the solid hydrogen storage cylinder (1).

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