Solid hydrogen storage device capable of providing efficient heat exchange environment for hydrogen storage alloy material

Abstract

The utility model discloses a solid hydrogen storage device capable of providing an efficient heat exchange environment for a hydrogen storage alloy material, which belongs to the technical field of hydrogen storage and comprises an outer layer tank body, a hydrogen storage tank body and an inner layer alloy storage tank body, two ends of the outer layer tank body are respectively provided with a water outlet and a water inlet, and the water inlet is connected with external heat exchange medium supply equipment; a hydrogen storage tank body and a plurality of inner-layer alloy storage tank bodies are arranged in the outer-layer tank body, and the hydrogen storage tank body is connected with a hydrogen circulation channel; the inner-layer alloy storage tank body is connected with the hydrogen storage tank body through a first hydrogen guide pipe, and a hydrogen storage alloy material is placed in the inner-layer alloy storage tank body. When the device is used, circulating water flow is introduced between the outer-layer tank body and the inner-layer alloy storage tank body, and the temperature is controlled to regulate and control the hydrogen absorption and desorption platform pressure of the hydrogen storage alloy in the inner-layer alloy storage tank body, so that the purpose of efficient heat exchange of hydrogen storage alloy powder in the hydrogen absorption and desorption process is achieved; and the sealing performance and the safety performance are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydrogen fuel storage equipment, and more specifically, relates to a solid hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. Background Technology

[0002] Hydrogen energy, as a clean, efficient, safe, and sustainable new energy source, has significant advantages. Integrating hydrogen energy into the overall energy system will help ensure energy security. Solid-state hydrogen storage, compared to high-pressure gaseous hydrogen storage and cryogenic liquid hydrogen storage, has obvious advantages such as high hydrogen storage density per unit volume, low operating pressure, and good safety performance, and has received widespread attention and recognition.

[0003] In recent years, domestic and international researchers have successively carried out studies on hydrogen storage using various solid materials and applied them to hydrogen fuel cell vehicles. Simultaneously, numerous studies have been conducted on the production capacity, efficiency, and safety of solid-state hydrogen storage applications in real-world scenarios. However, there is currently little research or reporting on the structure of devices used for solid-state hydrogen storage. A rationally optimized solid-state hydrogen storage device can represent a significant leap forward in production capacity, efficiency, safety, and overall airtightness compared to ordinary solid-state hydrogen storage devices. Research on the properties of hydrogen storage alloy powders has revealed that hydrogen absorption and desorption are reversible processes. During hydrogen absorption, the hydrogen storage alloy releases a large amount of heat. If this heat is not dissipated quickly, it will affect the absorption process, causing localized overheating and leading to partial aging and failure of the hydrogen storage alloy. During hydrogen desorption, the hydrogen storage alloy absorbs a large amount of heat. Uneven temperature distribution will affect the desorption rate. Therefore, how to control the temperature during the hydrogen absorption and desorption process of the hydrogen storage alloy has become a crucial issue.

[0004] A search revealed a solid-state high-pressure hybrid hydrogen storage device disclosed in Chinese patent application number 2015202269722. This device consists of multiple sub-tanks inside a mother tank, each filled with a blocky hydrogen storage alloy material. A heat exchange tube is connected to each sub-tank to heat or cool the hydrogen storage alloy material inside the sub-tank. Each sub-tank is connected to the inner cavity of the mother tank.

[0005] The shortcomings of this utility model are:

[0006] (1) Insert the heat pipe into each sub-tank. During the hydrogen absorption and desorption process, the hydrogen storage alloy will exchange a large amount of heat. The hydrogen storage alloy located in front of the heat exchange tube has a good heat exchange effect. The hydrogen storage alloy stored at the end of the sub-tank will be blocked due to insufficient heat at the end of the heat exchange tube.

[0007] (2) Due to the large number of heat exchange tubes and their contact with the outside of the tank, the tank needs to have multiple holes for the heat exchange tubes to enter the sub-tank, which will reduce the airtightness and safety performance of the entire device.

[0008] For example, Chinese Patent Application No. 2021204350103 discloses a solid hydrogen storage device, which includes a hydrogen storage tank containing a solid hydrogen storage material. The side wall of the hydrogen storage tank has a filling port, and the upper end of the hydrogen storage tank has a flange end cap. A hydrogen delivery pipe and multiple heaters are fixed on the flange end cap. The heaters are used to heat the hydrogen storage alloy material in the hydrogen storage tank, and the hydrogen delivery pipe is used to input hydrogen into the hydrogen storage tank for storage and to export hydrogen from the hydrogen storage tank.

[0009] The shortcomings of this utility model are:

[0010] (1) The heater is in close contact with the hydrogen storage alloy inside the tank, which will cause local overheating of the hydrogen storage alloy in contact with the heater, resulting in uneven heating of the hydrogen storage alloy near both sides of the tank, which will eventually reduce the overall performance of the hydrogen storage alloy.

[0011] (2) The application scope of the solid hydrogen storage device is relatively limited, and it fails to effectively solve the heat exchange problem in the process of hydrogen storage alloy absorbing hydrogen.

[0012] Therefore, there is an urgent need for a solid-state hydrogen storage device that is reasonably designed, has a simple structure, and can meet the requirements of efficient heat exchange of hydrogen storage alloy materials. Utility Model Content

[0013] 1. The problem to be solved

[0014] To address the heat exchange problem in the hydrogen absorption and desorption process of hydrogen storage alloys in existing solid-state hydrogen storage devices, this invention provides a simple and rationally designed solid-state hydrogen storage device that can efficiently meet the heat exchange requirements during the hydrogen absorption and desorption process of the hydrogen storage alloy, improve the hydrogen absorption and desorption rate, increase the hydrogen storage capacity and hydrogen purity, and significantly improve the airtightness and safety of the entire hydrogen storage device.

[0015] 2. Technical Solution

[0016] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0017] This utility model discloses a solid hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. It includes an outer tank, a hydrogen storage tank, and an inner alloy storage tank. The outer tank has an outlet and an inlet at both ends, and the inlet is connected to an external heat exchange medium supply device.

[0018] The hydrogen storage tank is located near the outlet of the outer tank and is detachably installed inside the outer tank cavity. The hydrogen storage tank is connected to the hydrogen flow channel. At least two inner alloy storage tanks are included, each detachably installed on the side wall of the outer tank. The top of each inner alloy storage tank is individually connected to the hydrogen storage tank via a first hydrogen conduit. The inner alloy storage tank holds the hydrogen storage alloy material. During the hydrogen absorption and desorption process of the storage material, the absorption and desorption temperatures of the hydrogen storage material are controlled by introducing circulating heat exchange media of different temperatures into the inner cavity of the outer tank, thereby achieving efficient heat exchange.

[0019] As a further improvement of this utility model, multiple inner alloy storage tanks are arranged in an array, and the distance between two adjacent inner alloy storage tanks is not less than 1 / 4 of the diameter of the inner alloy storage tank. The diameter of each inner alloy storage tank (300) is 70-90mm, thereby ensuring that the hydrogen storage alloy material can fully exchange heat with the heat exchange medium during heat exchange, further improving the uniformity of heat exchange of the hydrogen storage alloy material and improving the heat exchange efficiency.

[0020] As a further improvement of this utility model, it also includes a first fixed bracket and a second fixed bracket. Both the first and second fixed brackets are fixedly connected to the inner wall of the outer tank. The hydrogen storage tank is engaged with the first fixed bracket, and the inner alloy storage tank is engaged with the second fixed bracket. This utility model, through the provision of the first and second fixed brackets, ensures that the positions of the hydrogen storage tank and the inner alloy storage tank are prevented from changing due to external vibrations, thereby guaranteeing the reliability and safety of the entire device.

[0021] As a further improvement of this utility model, the second fixing bracket includes two brackets, which are respectively disposed at both ends of the inner alloy storage tank. The two fixing brackets support the inner alloy storage tank, thereby further improving the stability of the inner alloy storage tank.

[0022] As a further improvement of this utility model, the hydrogen storage alloy material is wrapped in a 500-mesh nylon mesh bag, and each inner alloy storage tank is provided with multiple nylon mesh bags wrapped with the hydrogen storage alloy material.

[0023] As a further improvement of this utility model, the outer tank body includes an inner layer and an outer layer, both of which are made of stainless steel, and a heat insulation material is provided between the inner layer and the outer layer.

[0024] As a further improvement of this invention, it also includes a second hydrogen conduit and a control valve. The hydrogen storage tank is connected to the hydrogen flow channel via the second hydrogen conduit, and the hydrogen flow channel is equipped with a control valve. The hydrogen storage tank acts as a buffer, allowing the hydrogen absorption and release reactions to proceed fully. More optimally, the control valve installed on the hydrogen flow channel can detect the pressure inside the tank to control the start and end of the hydrogen absorption and release process, significantly improving the safety of the entire process.

[0025] As a further improvement of this utility model, the hydrogen storage tank and the inner alloy storage tank are made of 6061 aluminum alloy material, which can not only ensure the strength of the tank, but also simplify the manufacturing process of the tank.

[0026] As a further improvement of this utility model, the first hydrogen conduit and the second hydrogen conduit have the same structure. Both ends of the first hydrogen conduit and the second hydrogen conduit are respectively machined with a handwheel end and an internal thread end. Both the handwheel end and the internal thread end are provided with rubber gaskets to further enhance the airtightness of the device and prevent hydrogen leakage.

[0027] As a further improvement of this utility model, the pipe walls of both the first hydrogen conduit and the second hydrogen conduit are composed of an inner rubber layer, a braided steel wire layer and an outer rubber layer.

[0028] 3. Beneficial effects

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] (1) The present invention provides a solid hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. By optimizing the overall structure of the device, the process of hydrogen absorption and desorption is controlled by introducing a circulating heat exchange medium between the outer tank and the inner alloy storage tank. This method allows heat exchange media of different temperatures to directly contact the inner alloy storage tank, thereby ensuring that the hydrogen storage alloy material can carry out uniform and efficient heat exchange and improve heat exchange efficiency.

[0031] (2) The present invention provides a solid hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. The device is equipped with a hydrogen storage tank, a first hydrogen conduit, a second hydrogen conduit, a hydrogen flow channel and a control valve. This design can play a buffering role to prevent drastic pressure changes during the hydrogen absorption and desorption process. The control valve is connected to the outside, so the pressure change of the internal device can be observed from the outside, and the hydrogen absorption and desorption process can be controlled in real time.

[0032] (3) The present invention provides a solid hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. The outer tank adopts a sandwich design, which improves the strength of the entire hydrogen storage device and ensures safety performance. The inner and outer layers are made of 304 stainless steel, which can reduce the rust and corrosion of the hydrogen storage tank and extend its service life. Polyurethane insulation material is placed between the inner and outer layers, which can provide shock absorption and heat insulation effects, protect the safety of the inner alloy storage tank, reduce the temperature loss of the internal circulating water, and improve the heat exchange efficiency of the hydrogen storage alloy.

[0033] (4) A solid hydrogen storage device of the present invention provides an efficient heat exchange environment for hydrogen storage alloy material. The hydrogen storage alloy material is filled into a 500-mesh nylon mesh bag and then filled into the inner alloy storage tank. The 500-mesh nylon mesh bag has the characteristics of heat dissipation and air permeability. Placing the hydrogen storage alloy powder inside the nylon mesh bag can avoid direct contact between the hydrogen storage alloy material and the inner alloy storage tank, thereby preventing local overheating and extending the service life of the hydrogen storage alloy material. By filling the hydrogen storage alloy material into the nylon mesh bag, the transfer of the hydrogen storage alloy powder during the hydrogen absorption and desorption process can also be prevented, thereby avoiding the hydrogen storage alloy powder from clogging the first hydrogen conduit and the second hydrogen conduit, and also improving the purity of the released hydrogen.

[0034] (5) The present invention provides a solid hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. The outlet is located at the top of the device and the inlet is located at the bottom of the device. During the hydrogen absorption / desorption process, a cold / hot medium is introduced. The medium exchanges heat with the internal hydrogen storage alloy material during the circulation process of the device, so that the temperature reaching the hydrogen storage tank is not too low / high, thereby reducing the pressure effect of thermal expansion and contraction on the hydrogen storage tank.

[0035] (6) The present invention provides a solid hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. A first fixed support is designed for the hydrogen storage tank and a second fixed support is set for the inner alloy storage tank. The fixed support can be used to install and fix the hydrogen storage tank and the inner alloy storage tank, which can prevent the position of the inner alloy storage tank from changing due to external vibration, thus ensuring the reliability and safety of the entire device.

[0036] (7) A solid hydrogen storage device of the present invention can provide an efficient heat exchange environment for hydrogen storage alloy materials. The first hydrogen conduit and the second hydrogen conduit are both composed of an inner rubber layer, a braided steel wire layer and an outer rubber layer. At the same time, one end is a handwheel end and the other end is an inner wire end. The handwheel end is connected to the inner wire end of the hydrogen storage tank. The inner wire end is connected to the outer wire end of the inner alloy storage tank and the hydrogen flow channel. This connection method is more reliable than the welding connection method, reduces the manufacturing difficulty of the device and improves the airtightness of the entire device. Attached Figure Description

[0037] Figure 1 This is an overview diagram of the internal and external structure of the hydrogen storage device of this utility model.

[0038] Figure 2 This is a structural diagram of one installation arrangement of the inner alloy storage tank of this utility model.

[0039] Figure 3 This is a schematic diagram of the structure of the second fixed bracket of this utility model.

[0040] Figure 4 This is a schematic diagram of the hydrogen conduit structure of this utility model.

[0041] Figure 5 This is a schematic diagram of the hydrogen storage tank structure of this utility model.

[0042] Figure 6 This is a schematic diagram of the inner alloy storage tank structure of this utility model.

[0043] Figure 7 This is a partial enlarged view of part A of this utility model.

[0044] In the picture:

[0045] 100. Outer tank; 101. Outlet; 102. Inlet;

[0046] 200. First fixed bracket; 201. Second fixed bracket;

[0047] 300. Inner alloy storage tank; 301. Hydrogen storage tank; 302. First hydrogen conduit; 303. Second hydrogen conduit; 304. Hydrogen flow channel; 305. Internal thread end; 306. External thread end; 307. Handwheel end;

[0048] 400. Control valve. Detailed Implementation

[0049] It should be noted that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] The present invention will be further described below with reference to specific embodiments.

[0052] Example 1

[0053] like Figure 1 , Figure 5 , Figure 6-7 As shown in the figure, this embodiment provides a solid-state hydrogen storage device that can provide an efficient heat exchange environment for hydrogen storage alloy materials. Its structure includes a hydrogen storage alloy material storage area, a heat exchange area, and a hydrogen buffer zone. Specifically, the solid-state hydrogen storage device includes an outer tank 100, a hydrogen storage tank 301, and an inner alloy storage tank 300. The following is a detailed description of the hydrogen storage device of this utility model:

[0054] Outer tank 100:

[0055] like Figure 1 As shown, in this embodiment, the outer tank 100 is provided with an outlet 101 and an inlet 102 at its top and bottom, respectively. The inlet 102 is located on the lower side of the outer tank 100, and the outlet 101 is located on the upper side of the outer tank 100. The inlet 102 is connected to an external heat exchange medium supply device. By optimizing the positions of the inlet 102 and the outlet 101, the heat exchange medium is ensured to flow in from the bottom inlet 102, exchange heat with the hydrogen storage alloy material inside the inner alloy storage tank 300, and finally flow out from the top outlet 102.

[0056] Furthermore, the outlet 101 can also be connected to the heat exchange medium supply equipment to realize the recycling of the heat exchange medium, thus saving energy and protecting the environment.

[0057] A heat exchange zone is formed between the outer tank 100 and the inner alloy storage tank 300. During the hydrogen absorption and desorption process of the hydrogen storage alloy material, the hydrogen absorption and desorption temperature of the hydrogen storage alloy material is controlled by introducing heat exchange media (such as circulating water) at different temperatures into the heat exchange zone, thereby achieving the purpose of efficient heat exchange.

[0058] Furthermore, a first fixing bracket 200 and a second fixing bracket 201 are fixedly installed in the inner cavity of the outer tank 100. Both the first fixing bracket 200 and the second fixing bracket 201 are fixedly installed to the inner sidewall of the outer tank 100. The fixing brackets can be directly welded to the inner sidewall or integrally formed with the inner sidewall. The first fixing bracket 200 is used to install the hydrogen storage tank 301, and the second fixing bracket 201 is used to install the inner alloy storage tank 300.

[0059] like Figure 3 As shown, the first fixed bracket 200 and the second fixed bracket 201 in this embodiment have basically the same structure. The difference lies in that the diameter of the mounting hole on the fixed bracket is determined according to the diameter of the hydrogen storage tank 301 and the inner alloy storage tank 300. Simultaneously, the number of mounting holes is also determined according to the number of hydrogen storage tanks 301 and inner alloy storage tanks 300 installed. For example, in this utility model, only one hydrogen storage tank 301 is required. Therefore, the first fixed bracket 200 only needs one mounting hole. The outer wall of the mounting hole is fixedly connected to the inner wall of the outer tank 100 through at least two connecting plates. The inner wall of the mounting hole is provided with a locking structure that matches the locking structure provided on the outer wall of the hydrogen storage tank 301. Snap-fit ​​installation achieves a detachable connection. In this embodiment, at least two inner alloy storage tanks 300 are provided; therefore, the second fixed bracket 201 has at least two interconnected mounting holes. The remaining structural configurations are the same as the first fixed bracket 200. The hydrogen storage device of this utility model, through the setting of the first fixed bracket 200 and the second fixed bracket 201, not only realizes the detachable installation of the hydrogen storage tank 301 and the inner alloy storage tank 300, but also improves the installation stability.

[0060] Furthermore, the second fixed bracket 201 includes two parallel and symmetrically arranged brackets, respectively located at both ends of the inner alloy storage tank 300, clamping both the upper and lower sides of the inner alloy storage tank 300, further improving the stability of the inner alloy storage tank 300, effectively preventing the inner alloy storage tank 300 from changing position due to external vibration, thereby ensuring the reliability and safety of the entire device.

[0061] Furthermore, the outer tank 100 adopts a sandwich design, comprising an inner and outer layer, which improves the strength of the entire hydrogen storage device and ensures safety performance. Both the inner and outer layers are made of 304 stainless steel, which reduces rust and corrosion and extends the service life of the tank. More optimally, polyurethane insulation material is also provided between the inner and outer layers, providing shock absorption and heat insulation effects. This protects the safety of the inner alloy storage tank 300 while also reducing temperature loss from the internal circulating water and improving the heat exchange efficiency of the hydrogen storage alloy.

[0062] Hydrogen storage tank 301 and inner alloy storage tank 300:

[0063] like Figure 1 and Figure 5 As shown, the hydrogen buffer zone in this embodiment includes a hydrogen storage tank 301, a first hydrogen conduit 302, a second hydrogen conduit 303, a control valve 400, and a hydrogen flow channel 304. The hydrogen storage tank 301 is fixed to the upper part of the inner cavity of the outer tank 100 by a first fixing bracket 200, that is, located below the outlet 101 of the outer tank 100. The hydrogen storage tank 301 is connected to the hydrogen flow channel 304 through the first hydrogen conduit 302. The hydrogen storage tank 301 exchanges hydrogen with the outside environment through a first hydrogen conduit 302 and a hydrogen flow channel 304. Simultaneously, a control valve 400 installed on the hydrogen flow channel 304 can detect the pressure inside the tank to control the start and end of the hydrogen absorption and release process, significantly improving the safety of the entire process. The hydrogen storage tank 301 is connected to the inner alloy storage tank 300 through a second hydrogen conduit 303. During the hydrogen absorption and release process, the hydrogen storage tank 301 acts as a buffer, allowing the hydrogen absorption and release reactions to proceed fully. Furthermore, both the hydrogen storage tank 301 and the inner alloy storage tank 300 are made of 6061 aluminum alloy, ensuring tank strength while simplifying the manufacturing process.

[0064] like Figure 1-2 and Figure 4 As shown, the first hydrogen conduit 302 and the second hydrogen conduit 303 have the same structure, with the conduit wall composed of an inner rubber layer, a braided steel wire layer, and an outer rubber layer. Both ends of the first hydrogen conduit 302 and the second hydrogen conduit 303 are respectively machined with a handwheel end 307 and an internal thread end 305. Specifically, as... Figure 4-7 As shown, the top of the hydrogen storage tank 301 is machined with an internal thread end 305, which is sealed to the handwheel end 307 of the second hydrogen conduit 303, and the internal thread end 305 of the second hydrogen conduit 303 is sealed to the external thread end 306 of the hydrogen flow channel 304. The bottom of the hydrogen storage tank 301 is machined with multiple internal thread ends 305, which are sealed to the handwheel end 307 of the first hydrogen conduit 302, and the internal thread end 305 of the first hydrogen conduit 302 is sealed to the external thread end 306 provided on the top of the inner alloy storage tank 300. Furthermore, and more optimally, rubber gaskets are provided at both ends of the connection points of the first hydrogen conduit 302 and the second hydrogen conduit 303 to enhance the airtightness of the device and prevent hydrogen leakage.

[0065] Furthermore, such as Figure 1 and Figure 6-7As shown, the inner alloy storage tank 300 includes at least two tanks, each detachably installed within the inner cavity of the outer tank 100 via a second fixing bracket 201. The inner alloy storage tank 300 holds the hydrogen storage alloy material, serving as a storage area for the hydrogen storage alloy material. Each inner alloy storage tank 300 is independently configured, and each inner alloy storage tank 300 has a hydrogen outlet at its top, which is individually connected to the hydrogen storage tank 301 via a first hydrogen conduit 302.

[0066] In actual design, the number of inner alloy storage tanks 300 can be designed according to the size of the outer tank 100 of the hydrogen storage device. The diameter of the inner alloy storage tanks 300 is set to 70-90mm, and multiple inner alloy storage tanks 300 are arranged in an array. The distance between two adjacent inner alloy storage tanks 300 is not less than 1 / 4 of the diameter of the inner alloy storage tank 300. This ensures that the hydrogen storage alloy material can fully exchange heat with the heat exchange medium during heat exchange, further improving the uniformity of heat exchange and increasing heat exchange efficiency. Figure 3 For illustrative purposes, in this embodiment, the number of inner alloy storage tanks 300 is designed to be 11, arranged in two circular arrays. Correspondingly, the second fixed bracket 201 is machined with 11 mounting holes corresponding to the distribution of the inner alloy storage tanks 300. The outer ring has 8 mounting holes, which can hold eight inner alloy storage tanks 300, and the inner ring has 3 mounting holes, which can also hold eight inner alloy storage tanks 300.

[0067] More optimally, the hydrogen storage alloy material is wrapped in a 500-mesh nylon mesh bag (not shown in the figure), and each inner alloy storage tank 300 has multiple nylon mesh bags containing the hydrogen storage alloy material. The 500-mesh nylon mesh bag has the characteristics of heat dissipation and breathability. Placing the hydrogen storage alloy powder inside the nylon mesh bag can avoid direct contact between the hydrogen storage alloy material and the inner alloy storage tank 300, thus preventing local overheating and extending the service life of the hydrogen storage alloy material. By filling the hydrogen storage alloy material into the nylon mesh bag, it is also possible to prevent the hydrogen storage alloy powder from transferring during the hydrogen absorption and desorption process, thereby preventing the hydrogen storage alloy powder from clogging the first hydrogen conduit 302 and the second hydrogen conduit 303, and also improving the purity of the released hydrogen.

[0068] This utility model also provides a method for using the above-mentioned solid hydrogen storage device:

[0069] Combination Figure 1-7Taking the hydrogen absorption reaction as an example, the usage of this device is explained below. First, external hydrogen gas enters the hydrogen storage tank 301 of the device through the hydrogen gas flow channel 304. During the hydrogen filling process, the control valve 400 can monitor the pressure changes of the internal device in real time. After the hydrogen storage tank 301 is filled with hydrogen gas through the hydrogen gas flow channel 304, it enters the interior of 11 inner alloy storage tanks 300 through 11 first hydrogen conduits 302. Inside each inner alloy storage tank 300, there is a container filled with hydrogen storage material. In the heat exchange process, water at 5-10°C is first introduced from the inlet between the outer tank 100 and the inner alloy storage tank 300. Since the hydrogen absorption process of the hydrogen storage alloy material is an exothermic reaction, when hydrogen enters the inner alloy storage tank 300, it enters the hydrogen storage alloy material through chemical and physical adsorption, releasing a large amount of heat. The introduced water at 5-10°C can absorb the heat released during the hydrogen absorption process, thereby promoting the hydrogen absorption reaction. The water that has absorbed the heat will flow out of the device from the outlet 101.

[0070] To further explain the operation of this device, let's take the hydrogen release reaction as an example. The hydrogen release reaction is an endothermic process. The hydrogen storage alloy material absorbs external energy to release hydrogen. First, water at 80-90°C is introduced into the inlet 102. The water comes into contact with the inner alloy storage tank 300. Through the excellent heat transfer properties of aluminum alloy, the temperature is transferred to the hydrogen storage alloy material wrapped in 500-mesh nylon mesh, thereby promoting the hydrogen release process of the hydrogen storage alloy material. After the water exchanges heat with the inner alloy storage tank 300, it flows out from the outlet 101. The hydrogen enters the hydrogen storage tank 301 from the first hydrogen conduit 302 and finally flows out from the hydrogen flow channel 304 through the second hydrogen conduit 303, where it undergoes an electrochemical reaction with the external hydrogen fuel cell to generate electricity. The control valve 400 monitors the pressure changes of the internal device in real time throughout the process.

[0071] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid-state hydrogen storage device that provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: It includes an outer tank (100), a hydrogen storage tank (301), and an inner alloy storage tank (300), wherein: The outer tank (100) is provided with an outlet (101) and an inlet (102) at both ends, and the inlet (102) is connected to an external heat exchange medium supply device. The hydrogen storage tank (301) is located near the outlet (101) of the outer tank (100) and can be detachably installed in the inner cavity of the outer tank (100). The hydrogen storage tank (301) is connected to the hydrogen flow channel (304). The inner alloy storage tank (300) includes at least two, both of which can be detachably installed on the side wall of the outer tank (100). The top of each inner alloy storage tank (300) is individually connected to the hydrogen storage tank (301) through a first hydrogen conduit (302). The inner alloy storage tank (300) holds the hydrogen storage alloy material.

2. The solid-state hydrogen storage device according to claim 1, which provides an efficient heat exchange environment for hydrogen storage alloy materials, is characterized in that: Multiple inner alloy storage tanks (300) are arranged in an array, and the distance between two adjacent inner alloy storage tanks (300) is not less than 1 / 4 of the diameter of the inner alloy storage tank (300). The diameter of each inner alloy storage tank (300) is 70-90 mm.

3. A solid-state hydrogen storage device according to claim 1, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: It also includes a first fixed bracket (200) and a second fixed bracket (201), both of which are fixedly connected to the inner wall of the outer tank (100). The hydrogen storage tank (301) is engaged and installed on the first fixed bracket (200), and the inner alloy storage tank (300) is engaged and installed on the second fixed bracket (201).

4. A solid-state hydrogen storage device according to claim 3, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: The second fixing bracket (201) includes two, and the two second fixing brackets (201) are respectively located at both ends of the inner alloy storage tank (300).

5. A solid-state hydrogen storage device according to claim 1, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: The hydrogen storage alloy material is wrapped in a 500-mesh nylon mesh bag, and each inner alloy storage tank (300) is provided with multiple nylon mesh bags wrapped with the hydrogen storage alloy material.

6. A solid-state hydrogen storage device according to any one of claims 1-5, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: The outer tank (100) includes an inner layer and an outer layer, both of which are made of stainless steel, and there is also a heat insulation material between the inner and outer layers.

7. A solid-state hydrogen storage device according to any one of claims 1-5, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: It also includes a second hydrogen conduit (303) and a control valve (400). The hydrogen storage tank (301) is connected to the hydrogen flow channel (304) through the second hydrogen conduit (303), and the hydrogen flow channel (304) is equipped with a control valve (400).

8. A solid-state hydrogen storage device according to any one of claims 1-5, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: The hydrogen storage tank (301) and the inner alloy storage tank (300) are made of 6061 type aluminum alloy material.

9. A solid-state hydrogen storage device according to claim 7, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: The first hydrogen conduit (302) and the second hydrogen conduit (303) have the same structure. Both ends of the first hydrogen conduit (302) and the second hydrogen conduit (303) are respectively machined with a handwheel end (307) and an inner thread end (305). Both the handwheel end (307) and the inner thread end (305) are provided with rubber gaskets.

10. A solid-state hydrogen storage device according to claim 7, which provides an efficient heat exchange environment for hydrogen storage alloy materials, characterized in that: The walls of both the first hydrogen conduit (302) and the second hydrogen conduit (303) are composed of an inner rubber layer, a braided steel wire layer, and an outer rubber layer.

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