Electrothermal solid hydrogen storage device

Abstract

The utility model discloses an electric heating type solid hydrogen storage device which comprises a hydrogen storage bottle, a heater, a storage battery and a hydrogen fuel cell, a solid hydrogen storage material is filled in the hydrogen storage bottle, the heater is arranged in the hydrogen storage bottle, and the heater is provided with a heating layer which is made of a copper material; the storage battery is connected with the heater, and the hydrogen fuel cell is connected with the storage battery. A copper net or a copper disc is adopted for heating, a heater does not need to introduce heat exchange fluid into a system for heat exchange, the leakage risk caused by the heat exchange fluid is avoided, and the solid hydrogen storage material is prevented from being polluted; the structure of the copper net or the copper disc increases the heat exchange area, plays a role in heating and enhances the heat exchange effect, and has the characteristic of high heat transfer, so that the hydrogen desorption efficiency of the solid hydrogen storage device is improved; the electric heating type heater is adopted to replace a traditional finned tube type heat exchanger, the weight and the volume occupancy rate of a heating system are reduced, and therefore the mass energy storage density and the volume energy storage density of the solid hydrogen storage device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solid hydrogen storage, and particularly relates to an electrothermal solid hydrogen storage device. Background Art

[0002] Solid hydrogen storage materials need to exchange heat with the outside world during hydrogen absorption and desorption. When absorbing hydrogen, solid hydrogen storage materials release heat, and when desorbing hydrogen, they absorb heat. The existing solid hydrogen storage devices adopt finned tube heat exchangers, and heat exchange occurs between the heat transfer fluid inside the tube and the solid hydrogen storage materials. This heat exchange efficiency is relatively low, so fins need to be installed to enhance heat exchange. However, there are still the following problems:

[0003] 1. Introducing a heat transfer fluid for heat exchange has a risk of leakage and is likely to contaminate the solid hydrogen storage materials;

[0004] 2. The fin structure occupies the volume in the solid hydrogen storage device, further reducing the hydrogen storage density;

[0005] 3. The number and diameter of the heat transfer fluid tubes are limited, the heat exchange area is small, and it is more difficult for the solid hydrogen storage materials farther away from the heat transfer fluid to conduct heat exchange. The entire solid hydrogen storage device is unevenly heated, and the heat exchange efficiency is still low even after installing fins. Summary of the Utility Model

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides an electrothermal solid hydrogen storage device, which can improve the heat exchange efficiency, does not contaminate the solid hydrogen storage materials, and improves the hydrogen storage density and hydrogen storage performance.

[0007] An embodiment of the utility model provides an electrothermal solid hydrogen storage device, which includes a hydrogen storage bottle, a heater, a storage battery, and a hydrogen fuel cell. The inside of the hydrogen storage bottle is filled with solid hydrogen storage materials. The heater is installed in the hydrogen storage bottle. The heater is provided with a heating layer, and the heating layer is made of copper material. The storage battery is connected to the heater, and the hydrogen fuel cell is connected to the storage battery.

[0008] According to some embodiments of the utility model, a hydrogen outlet is arranged on one side of the hydrogen storage bottle.

[0009] According to some embodiments of the utility model, a through hole is arranged at the top of the hydrogen storage bottle, and the storage battery is connected to the heater through the through hole.

[0010] According to some embodiments of the utility model, the number of the heating layers is multiple, and the multiple heating layers are arranged parallel to each other.

[0011] According to some embodiments of the utility model, the heating layer is a mesh structure.

[0012] According to some embodiments of the present utility model, the heating layer is in a disc-shaped structure.

[0013] According to some embodiments of the present utility model, the heating layer is provided with a plurality of mesh holes, and the plurality of mesh holes are evenly distributed on the heating layer.

[0014] According to some embodiments of the present utility model, a heat insulation layer is provided on the outer surface of the hydrogen storage cylinder.

[0015] According to some embodiments of the present utility model, the inner surface of the hydrogen storage cylinder is made of a hydrogen embrittlement-resistant metal material.

[0016] According to some embodiments of the present utility model, the solid hydrogen storage material is a magnesium alloy material.

[0017] The embodiments of the present utility model at least have the following beneficial effects:

[0018] The above electrothermal solid hydrogen storage device includes a hydrogen storage cylinder, a heater, a storage battery and a hydrogen fuel cell. The heater is provided with a heating layer, and the heating layer is made of copper material. By utilizing the characteristics that copper is both a good conductor of electricity and a good conductor of heat, the heat supply and heat transfer during the hydrogen release process of the solid hydrogen storage material are carried out by means of energizing a copper mesh or a copper disc. There is no need to introduce an external fluid for heat exchange. First, the risk of contaminating the hydrogen storage material caused by fluid leakage is eliminated. Second, the volume and weight of the conventional heating / heat exchange device are reduced, and further the volume and mass hydrogen storage density of the solid hydrogen storage device are improved. The storage battery provides initial energy for the hydrogen release of the solid hydrogen storage container. The solid hydrogen storage material in the hydrogen storage cylinder starts to release hydrogen after being heated. After the hydrogen enters the fuel cell, the hydrogen energy is converted into electric energy and generated outward. The main part of the generated electricity is output externally, and a small part is supplied to charge the storage battery. Then this part of the electricity heats the solid hydrogen storage material through the heater. The heated solid hydrogen storage material continuously releases hydrogen, and the hydrogen will continue to flow to the hydrogen fuel cell for power generation until the hydrogen in the solid hydrogen storage container is released completely. Thus, the following beneficial effects are obtained:

[0019] 1. Adopting the heating method of a copper mesh or a copper disc, the heater does not need to introduce a heat exchange fluid for heat exchange, avoiding the leakage risk brought by the heat exchange fluid and avoiding polluting the solid hydrogen storage material;

[0020] 2. Since copper has good heat transfer performance, and the structure of the copper mesh or the copper disc increases the heat exchange area, playing a heating role and enhancing the heat exchange effect, with the characteristic of high heat transfer, thereby improving the hydrogen release efficiency of the solid hydrogen storage device;

[0021] 3. Adopting an electrothermal heater to replace the traditional finned tube heat exchanger reduces the weight and volume occupancy rate of the heating system, thereby improving the mass energy storage density and volume energy storage density of the solid hydrogen storage device.

[0022] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0023] The above-mentioned and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is a schematic structural diagram of an electrothermal solid-state hydrogen storage device according to an embodiment of the present utility model;

[0025] Figure 2 is Figure 1 a schematic structural diagram of a hydrogen storage cylinder of the electrothermal solid-state hydrogen storage device shown;

[0026] Figure 3 is Figure 1 a schematic structural diagram of a mesh heating layer of the electrothermal solid-state hydrogen storage device shown;

[0027] Figure 4 is a schematic structural diagram of a disc-shaped heating layer of the electrothermal solid-state hydrogen storage device according to an embodiment of the present utility model.

[0028] Reference Signs:

[0029] hydrogen storage cylinder 100, hydrogen outlet 110, through hole 120, heater 200, heating layer 210, mesh hole 211, storage battery 300, hydrogen fuel cell 400. Detailed Embodiments

[0030] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0031] In the description of the present utility model, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0032] In the description of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is more than two, understandings such as greater than, less than, exceeding, etc. do not include the corresponding number, and understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first", "second", etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0033] In the description of the present utility model, unless otherwise clearly defined, terms such as "arranged", "installed", "connected", "linked" should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present utility model in combination with the specific content of the technical solution.

[0034] Please refer to Figures 1 to 2 , this embodiment discloses an electrothermal solid-state hydrogen storage device, which includes a hydrogen storage bottle 100, a heater 200, a storage battery 300, and a hydrogen fuel cell 400. The inside of the hydrogen storage bottle 100 is filled with a solid-state hydrogen storage material; the heater 200 is installed in the hydrogen storage bottle 100, the heater 200 is provided with a heating layer 210, and the heating layer 210 is made of copper material; the storage battery 300 is connected to the heater 200, and the hydrogen fuel cell 400 is connected to the storage battery 300. The hydrogen fuel cell 400 supplies power to the heater 200, and after the heater 200 is powered on, it generates heat to heat the solid-state hydrogen storage material. After the solid-state hydrogen storage material is heated, hydrogen is generated. The hydrogen is transported to the hydrogen fuel cell 400 for power generation, and the main part of the generated electricity is output externally. A part of the electricity is supplied to the storage battery 300 for subsequent power supply to the heater 200. As long as the heater 200 continuously obtains electrical energy, it can continuously heat the solid-state hydrogen storage material and continuously generate hydrogen to supply power generation of the hydrogen fuel cell 400 until the hydrogen stored in the hydrogen storage bottle 100 is completely released. The heater 200 does not need to introduce a heat exchange fluid for heat exchange, avoiding the leakage risk brought by the heat exchange fluid and avoiding polluting the solid-state hydrogen storage material. By means of the heating layer 210, the heat exchange area is increased, which plays a heating role and enhances the heat exchange effect, and has the characteristic of high heat transfer, thereby improving the hydrogen release efficiency of the solid-state hydrogen storage device. Using an electrothermal heater to replace the traditional finned tube heat exchanger reduces the weight and volume occupancy rate of the heating system, thereby improving the mass energy storage density and volume energy storage density of the solid-state hydrogen storage device and enhancing the hydrogen storage performance.

[0035] Please refer to Figure 2, a hydrogen outlet 110 is provided on one side of the hydrogen storage cylinder 100; a through hole 120 is provided at the top of the hydrogen storage cylinder 100, and the storage battery 300 is connected to the heater 200 through the through hole 120. The solid hydrogen storage material in the hydrogen storage cylinder 100 generates hydrogen after being heated, and the hydrogen is transported to the hydrogen fuel cell 400 through the hydrogen outlet 110 for power generation. The main part of the generated electricity is output externally, and a part of the electricity is supplied to the storage battery 300 to provide electrical energy for the heater 200 subsequently.

[0036] Please refer to Figure 2 , the number of the heating layers 210 is multiple, and the multiple heating layers 210 are arranged parallel to each other. The heat exchange area is increased by the multiple heating layers 210, which plays a heating role and strengthens the heat exchange effect, and has the characteristic of high heat transfer, thereby improving the hydrogen release efficiency of the solid hydrogen storage device.

[0037] Please refer to Figure 3 and Figure 4 , the heating layer 210 can be a mesh structure, that is, the heating layer 210 is a copper mesh. The heating layer 210 can also be a disc-shaped structure, that is, the heating layer 210 is a copper disc; a plurality of mesh holes 211 are provided on the copper disc, and the plurality of mesh holes 211 are evenly distributed on the heating layer 210. The heat exchange area is increased by the structure of the copper mesh or the copper disc, which plays a heating role and strengthens the heat exchange effect, and has the characteristic of high heat transfer, thereby improving the hydrogen release efficiency of the solid hydrogen storage device.

[0038] Please refer to Figure 2 , a heat insulation layer is provided on the outer surface of the hydrogen storage cylinder 100, and the inner surface of the hydrogen storage cylinder 100 is made of a hydrogen embrittlement-resistant metal material. The heat insulation layer is provided to reduce the heat dissipation of the hydrogen storage cylinder 100, that is, to reduce the heat loss to the outside and prevent the waste of energy; a hydrogen embrittlement-resistant metal material is selected, such as low-alloy high-strength steel, which maintains mechanical properties and corrosion resistance at high temperatures.

[0039] It should be noted that the above solid hydrogen storage material is a magnesium alloy material, and the magnesium alloy material has the characteristics of high hydrogen storage density and high safety.

[0040] In use, the hydrogen fuel cell 400 supplies power to the heater 200. After the heater 200 is powered on, it generates heat and heats the solid hydrogen storage material. After the solid hydrogen storage material is heated, hydrogen gas is generated. The hydrogen gas is transported to the hydrogen fuel cell 400 for power generation. The generated electricity is mainly output externally, and a part of the electricity is supplied to the storage battery 300 for providing electrical energy to the heater 200 subsequently. The heater 200 can continuously obtain electrical energy to continuously heat the solid hydrogen storage material, continuously generate hydrogen gas to supply the hydrogen fuel cell 400 for power generation until the hydrogen gas stored in the hydrogen storage cylinder 100 is completely released. The storage battery 300 provides the initial energy for the hydrogen release of the hydrogen storage cylinder 100. After the solid hydrogen storage material in the hydrogen storage cylinder 100 is heated, hydrogen gas starts to be released. After the hydrogen gas enters the fuel cell, the hydrogen energy is converted into electrical energy and output externally. The main part of the generated electricity is output externally, and a small part is supplied to charge the storage battery 300. Then this part of the electricity heats the solid hydrogen storage material through the heater 200. The heated solid hydrogen storage material continuously releases hydrogen gas, and the hydrogen gas will continue to flow to the fuel cell for power generation until the hydrogen gas in the solid hydrogen storage container is completely released. When using a copper mesh or a copper disk for heating, the heater 200 does not need to introduce a heat exchange fluid for heat exchange, avoiding the leakage risk brought by the heat exchange fluid and avoiding polluting the solid hydrogen storage material; since copper has good heat transfer performance, and the structure of the copper mesh or the copper disk increases the heat exchange area, playing a role in heating and enhancing the heat exchange effect, with the characteristic of high heat transfer, thus improving the hydrogen release efficiency of the solid hydrogen storage device; using the electric heater 200 to replace the traditional finned tube heat exchanger reduces the weight and volume occupancy rate of the heating system, thereby improving the mass energy storage density and volume energy storage density of the solid hydrogen storage device.

[0041] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. An electrothermal solid-state hydrogen storage device, characterized in that: include: A hydrogen storage bottle (100), wherein a solid hydrogen storage material is contained inside the hydrogen storage bottle (100); A heater (200), the heater (200) being installed in the hydrogen storage bottle (100), the heater (200) being provided with a heating layer (210), the heating layer (210) being made of a copper material; A storage battery (300), the storage battery (300) being connected to the heater (200); A hydrogen fuel cell (400), wherein the hydrogen fuel cell (400) is connected to the storage battery (300).

2. The electrothermal solid-state hydrogen storage device according to claim 1, characterized in that: A hydrogen outlet (110) is provided on one side of the hydrogen storage bottle (100).

3. The electrothermal solid-state hydrogen storage device according to claim 1, characterized in that: A through hole (120) is provided on the top of the hydrogen storage bottle (100), and the storage battery (300) is connected to the heater (200) via the through hole (120).

4. The electrothermal solid-state hydrogen storage device according to claim 1, characterized in that: There are a plurality of heating layers (210), and the plurality of heating layers (210) are arranged parallel to each other.

5. The electrothermal solid-state hydrogen storage device according to claim 1, characterized in that: The heating layer (210) is a mesh structure.

6. The electrothermal solid-state hydrogen storage device according to claim 1, characterized in that: The heating layer (210) is a disc-shaped structure.

7. The electrothermal solid-state hydrogen storage device according to claim 6, characterized in that: The heating layer (210) is provided with a plurality of mesh holes (211), and the plurality of mesh holes (211) are evenly distributed on the heating layer (210).

8. The electrothermal solid-state hydrogen storage device according to claim 1, characterized in that: The outer surface of the hydrogen storage bottle (100) is provided with a heat-insulating layer.

9. The electrothermal solid-state hydrogen storage device according to claim 1 or 8, characterized in that: The inner surface of the hydrogen storage bottle (100) is made of a metal material resistant to hydrogen embrittlement.

10. The electrothermal solid-state hydrogen storage device according to claim 1, characterized in that: The solid-state hydrogen storage material is a magnesium alloy material.

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