A hydrogen storage container

Abstract

The embodiment of the present application provides a hydrogen storage container, which comprises an inner container, an outer container and a heat conduction system, the inner container is internally formed with a containing cavity for filling hydrogen storage material; the outer container is sleeved outside the inner container and forms a refrigerant containing space with the inner container; the heat conduction system comprises a heating device, a refrigerant pipeline and a stop valve, the heating device is arranged in the containing cavity, the refrigerant pipeline comprises a refrigerant pipeline which is communicated with the refrigerant containing space and a bypass pipeline which is communicated with the refrigerant pipeline, the stop valve is used for controlling the on-off of the refrigerant pipeline, and the bypass pipeline is used for discharging the refrigerant in the refrigerant containing space. The hydrogen storage container improves the hydrogen absorption / desorption rate of the hydrogen storage material.

Description

Technical Field

[0001] This application relates to the field of hydrogen energy technology, and in particular to a hydrogen storage container. Background Technology

[0002] Hydrogen energy is an ideal secondary energy source. Currently, hydrogen storage methods mainly include high-pressure hydrogen storage, liquid hydrogen storage, and metal hydride hydrogen storage. Among these, metal hydride hydrogen storage has advantages such as high storage density, fast absorption and desorption rates, good reversibility, and good safety, and is therefore widely used. Metal hydrogen storage materials have the basic characteristic of fast hydrogen absorption rate, but the high exothermic rate of rapid hydrogen absorption will cause the temperature to rise rapidly, which will then inhibit the hydrogen absorption reaction process. Therefore, the thermal conductivity rate of metal hydrogen storage materials to the outside often becomes a key indicator of the hydrogen absorption process, significantly affecting the hydrogen absorption rate. At the same time, metal hydrides have poor heat and mass transfer characteristics. Generally, after hydrogen absorption and pulverization, the effective thermal conductivity drops sharply, making it difficult to release heat to the outside in time during hydrogen absorption and unable to quickly absorb heat from the outside during dehydrogenation. Thus, low thermal conductivity becomes a bottleneck limiting the reaction rate.

[0003] Currently, the thermal conductivity of metal hydrogen storage systems is mainly increased by adding materials with high thermal conductivity, such as copper, aluminum foam, and graphite. However, such methods only enhance the thermal conductivity between the hydrogen storage material powders within the container, and do not significantly improve the efficiency of heat transfer between the hydrogen storage container and the cold / heat source. The efficiency of heat transfer between the hydrogen storage container and the cold / heat source often has a more significant impact on the overall hydrogen absorption and desorption efficiency. Summary of the Invention

[0004] In view of this, embodiments of this application aim to provide a hydrogen storage container that can improve the hydrogen absorption / desorption rate of hydrogen storage materials.

[0005] To achieve the above objectives, one embodiment of this application provides a hydrogen storage container, comprising:

[0006] The inner container has an internal cavity for filling with hydrogen storage material;

[0007] An outer container is fitted over the outer side of the inner container and forms a refrigerant-containing space between the inner container and the inner container;

[0008] A heat conduction system includes a heating device, a refrigerant pipeline, and a shut-off valve. The heating device is disposed in the receiving cavity. The refrigerant pipeline includes a refrigerant line communicating with the refrigerant receiving space and a bypass line communicating with the refrigerant line. The shut-off valve is used to control the opening and closing of the refrigerant line, and the bypass line is used to discharge the refrigerant in the refrigerant receiving space.

[0009] The hydrogen storage material in the containment cavity is in a hydrogen absorption state, the heating device is in a non-heating state, and the shut-off valve opens the refrigerant pipeline to allow the refrigerant to flow in the refrigerant containment space.

[0010] The hydrogen storage material in the containment cavity is in a hydrogen release state, the shut-off valve shuts off the refrigerant pipeline, the refrigerant in the refrigerant containment space is discharged through the bypass pipeline, and the heating device is in a heating state.

[0011] In one embodiment, the hydrogen storage container further includes a top plate for sealing the inner container and the outer container, the heating device extending through the top plate into the receiving cavity; and / or, the refrigerant pipeline passing through the top plate and communicating with the refrigerant receiving space.

[0012] In one embodiment, the refrigerant pipeline includes an inlet pipeline and an outlet pipeline connected to the refrigerant containment space, the bypass pipeline is connected to the inlet pipeline or the outlet pipeline, and both the inlet pipeline and the outlet pipeline are equipped with the shut-off valve.

[0013] In one embodiment, the refrigerant is a gaseous refrigerant, and the refrigerant pipeline includes an inlet pipeline and an outlet pipeline communicating with the refrigerant containing space. One end of the inlet pipeline extends from the top of the refrigerant containing space into the refrigerant containing space and extends to the bottom of the refrigerant containing space, and the inlet pipeline has at least one vent near the bottom of the refrigerant containing space. One end of the outlet pipeline extends from the top of the refrigerant containing space into the refrigerant containing space and is near the top of the refrigerant containing space.

[0014] In one embodiment, a plurality of air outlet holes are provided on the side wall of the inlet pipeline.

[0015] In one embodiment, at least a portion of the vents face the inner container; and / or, at least a portion of the vents are spaced apart along the height of the refrigerant containment space; and / or, the end of the inlet pipe near the refrigerant containment space is blocked.

[0016] In one embodiment, the diameter of each of the air outlets, which are spaced apart along the height direction, gradually increases from the top of the refrigerant containing space to the bottom of the refrigerant containing space.

[0017] In one embodiment, the refrigerant is a liquid refrigerant, and the refrigerant pipeline includes an inlet pipeline and an outlet pipeline communicating with the refrigerant containing space. One end of the outlet pipeline extends into the refrigerant containing space from the bottom and is close to the bottom of the refrigerant containing space, and one end of the inlet pipeline extends into the refrigerant containing space from the top and is close to the top of the refrigerant containing space.

[0018] In one embodiment, the hydrogen storage container further includes a heat dissipation device disposed within the containment cavity, and both the heat dissipation device and the heating device are removable structures from the containment cavity.

[0019] In one embodiment, the hydrogen storage container further includes an interventional cannula disposed in the receiving cavity, and the heat dissipation device and the heating device can be alternatively inserted into the interventional cannula.

[0020] In one embodiment, the heat dissipation device is a heat exchange tube connected to an external cold source.

[0021] In one embodiment, the heating device includes a first heating wire; and / or, the hydrogen storage container further includes an interventional sleeve disposed in the receiving cavity, the heating device including a first heating wire extending into the interventional sleeve and a thermally conductive powder material filled in the interventional sleeve.

[0022] In one embodiment, the hydrogen storage container further includes a heating element surrounding the outer wall of the inner container.

[0023] In one embodiment, the hydrogen storage container includes an external temperature sensing element, an internal temperature sensing element, and a temperature sensing sleeve. The external temperature sensing element is disposed in the refrigerant containing space, the temperature sensing sleeve is located in the containing cavity, and the internal temperature sensing element is disposed inside the temperature sensing sleeve.

[0024] In one embodiment, the hydrogen storage container further includes an intervention sleeve for setting the heating device. There are multiple intervention sleeves distributed at intervals within the receiving cavity, and the temperature measuring sleeve is arranged in a one-to-one correspondence with the intervention sleeve.

[0025] In one embodiment, the hydrogen storage container further includes an intervention sleeve for setting the heating device, wherein there is one intervention sleeve and multiple temperature measuring sleeves, the multiple temperature measuring sleeves surrounding the intervention sleeve.

[0026] In one embodiment, the hydrogen storage container further includes a partition support structure disposed in the receiving cavity, the partition support structure dividing the receiving cavity into multiple regions, each region respectively accommodating the hydrogen storage material.

[0027] This application provides a hydrogen storage container, which includes an inner container for filling hydrogen storage material, an outer container, and a heat conduction system. The outer container is fitted over the inner container, forming a refrigerant containment space between them. The heat conduction system includes a heating device, a refrigerant pipeline, and a shut-off valve. The heating device is disposed within the containment space. The refrigerant pipeline includes a refrigerant line communicating with the refrigerant containment space and a bypass line communicating with the refrigerant line. The shut-off valve controls the on / off of the refrigerant line, and the bypass line discharges the refrigerant from the refrigerant containment space. When the hydrogen storage material is in a hydrogen absorption state, heat exchange can be performed between the hydrogen storage material and the refrigerant in the refrigerant containment space to enhance heat transfer efficiency, rapidly release heat, and prevent the hydrogen absorption reaction from being affected by excessively high temperatures. When the hydrogen storage material is in a hydrogen release state, the heating device can heat the hydrogen storage material, and simultaneously, the refrigerant in the refrigerant containment space is discharged to provide a vacuum insulation environment, preventing the hydrogen release reaction from being affected by heat loss. The hydrogen storage container of this application embodiment can effectively enhance the thermal conductivity between the hydrogen storage material and the cold / heat source during the hydrogen absorption / desorption process, and significantly improve the hydrogen absorption / desorption rate of the hydrogen storage material. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a hydrogen storage container according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures

[0030] 10. Inner container; 10a. Receiving cavity; 20. Outer container; 20a. Refrigerant receiving space; 30. Top plate; 40. Intervention sleeve; 50. Temperature measuring sleeve; 60. Refrigerant pipeline; 61. Inlet pipeline; 61a. Vent; 62. Outlet pipeline; 70. Separation support structure; 80. Heating device. Detailed Implementation

[0031] In the description of the embodiments in this application, it should be noted that the terms "top," "bottom," and "height direction" are based on the appendix. Figure 1 The orientation or positional relationship shown is merely for the convenience of describing the embodiments of this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the embodiments of this application.

[0032] This application provides a hydrogen storage container; please refer to [link / reference]. Figure 1The hydrogen storage container includes an inner container 10, an outer container 20, and a heat conduction system. The interior of the inner container 10 forms a cavity 10a for filling with hydrogen storage material. The outer container 20 is fitted outside the inner container 10 and forms a refrigerant containment space 20a between them. The heat conduction system includes a heating device 80, refrigerant lines, and a shut-off valve. The heating device 80 is disposed within the cavity 10a. The refrigerant lines include a refrigerant line 60 communicating with the refrigerant containment space 20a and a bypass line communicating with the refrigerant line 60. The shut-off valve is used to control the on / off state of the refrigerant line 60, and the bypass line is used to discharge the refrigerant from the refrigerant containment space 20a.

[0033] The refrigerant can be either gaseous or liquid.

[0034] The structure of the heating device 80 is not limited. For example, the heating device 80 can be a first heating wire, or the hydrogen storage container can be provided with an interventional sleeve 40 in the receiving cavity 10a. The heating device 80 can include a first heating wire extending into the interventional sleeve 40 and a thermally conductive powder material filled in the interventional sleeve 40.

[0035] The hydrogen storage material in the containment cavity 10a is in a hydrogen absorption state, releasing heat to the outside. The heating device 80 is in a non-heating state, and the shut-off valve opens the refrigerant pipeline 60 to allow the refrigerant to flow in the refrigerant containment space 20a. In other words, the heating device 80 does not heat the medium, and the refrigerant in the refrigerant containment space 20a absorbs the heat generated by the hydrogen absorption of the hydrogen storage material through heat exchange with the hydrogen storage material, thereby controlling the temperature rise in the containment cavity 10a so that the hydrogen storage material can maintain a high-rate hydrogen absorption reaction.

[0036] When the hydrogen storage material in the containment cavity 10a is in a hydrogen release state, the shut-off valve shuts off the refrigerant line 60, and the refrigerant in the refrigerant containment space is discharged through the bypass line. The heating device 80 is in a heating state, that is, the heating device 80 heats the hydrogen storage material in the containment cavity 10a, while the refrigerant in the refrigerant containment space 20a is discharged through the bypass line to the refrigerant line 60 to provide a vacuum insulation environment, prevent heat loss to the maximum extent, thereby controlling the temperature drop in the containment cavity 10a and enabling the hydrogen storage material to maintain a high-rate hydrogen release reaction.

[0037] In other words, when the hydrogen storage material is in a hydrogen absorption state, the hydrogen storage container of this application embodiment can exchange heat with the hydrogen storage material through the refrigerant in the refrigerant containment space 20a to enhance heat transfer efficiency, quickly release heat, and prevent the hydrogen storage material from affecting the hydrogen absorption reaction process due to excessive temperature. When the hydrogen storage material is in a hydrogen release state, the hydrogen storage material can be heated by the heating device 80. At the same time, by discharging the refrigerant in the refrigerant containment space 20a, a vacuum insulation environment is provided to prevent the hydrogen storage material from affecting the hydrogen release reaction process due to heat loss. The hydrogen storage container of this application embodiment can effectively enhance the heat transfer efficiency between the hydrogen storage material and the cold / heat source during the hydrogen absorption / release process, and significantly improve the hydrogen absorption / release rate of the hydrogen storage material.

[0038] In one embodiment, please refer to Figure 1 The hydrogen storage container also includes a top plate 30 located on top of the inner container 10 and the outer container 20. The top plate is used to seal the inner container 10 and the outer container 20. That is, the inner container 10 and the outer container 20 can share the same top plate 30. The top plate 30 seals the receiving cavity 10a and the refrigerant receiving space 20a.

[0039] For example, the heating device 80 can extend through the top plate 30 into the receiving cavity 10a to heat the hydrogen storage material.

[0040] For example, please refer to Figure 1 The refrigerant pipeline 60 can pass through the top plate 30 and connect to the refrigerant storage space 20a.

[0041] In one embodiment, please refer to Figure 1 The refrigerant pipeline 60 includes an inlet pipeline 61 and an outlet pipeline 62 connected to the refrigerant storage space 20a. A bypass pipeline can be connected to either the inlet pipeline 61 or the outlet pipeline 62. Both the inlet pipeline 61 and the outlet pipeline 62 can be equipped with shut-off valves. When the hydrogen storage material in the storage cavity 10a is in a hydrogen-releasing state, the storage cavity 10a needs to be heated and insulated. At this time, the shut-off valve is closed, and the refrigerant in the refrigerant storage space 20a is evacuated through the bypass pipeline, forming a vacuum atmosphere, cutting off the heat dissipation path, significantly reducing environmental heat loss, and improving heating efficiency. When the hydrogen storage material in the storage cavity 10a is in a hydrogen-absorbing state, the storage cavity 10a needs to be cooled. At this time, the shut-off valve is opened, and the refrigerant in the refrigerant storage space 20a circulates and dissipates heat through the inlet pipeline 61 and the outlet pipeline 62.

[0042] To ensure a good flow path for the refrigerant within the refrigerant containment space 20a, the axis of the inlet pipe 61 and the axis of the outlet pipe 62 are symmetrically distributed with the inner container 10 as the center.

[0043] It should be noted that the configuration of the inlet pipe 61 and the outlet pipe 62 can be determined according to the type and source of the refrigerant. If a circulating cooling method is used, the inlet pipe 61 is connected to the cooler outlet and the outlet pipe 62 is connected to the cooler inlet. If natural air cooling is used, the inlet pipe 61 and the outlet pipe 62 can be connected to the external environment, that is, the air can be discharged to the external environment.

[0044] In one embodiment, please refer to Figure 1 When the refrigerant is gaseous, in order to control the flow direction of the gaseous refrigerant in the refrigerant holding space 20a, one end of the inlet pipe 61 can extend from the top of the refrigerant holding space 20a into the refrigerant holding space 20a and extend to the bottom of the refrigerant holding space 20a. The inlet pipe 61 has at least an outlet near the bottom of the refrigerant holding space 20a. One end of the outlet pipe 62 can extend from the top of the refrigerant holding space 20a into the refrigerant holding space 20a and extend near the top of the refrigerant holding space 20a. That is to say, the gaseous refrigerant can enter the refrigerant holding space 20a from the bottom and flow out from the top of the refrigerant holding space 20a. Since gaseous refrigerant tends to accumulate at the top of the refrigerant storage space 20a, the gaseous refrigerant enters the refrigerant storage space 20a from the bottom, which allows the gaseous refrigerant to quickly and fully fill the entire refrigerant storage space 20a, thus ensuring the heat conduction effect of the refrigerant storage space 20a. The gaseous refrigerant flows out from the top of the refrigerant storage space 20a, which also facilitates the rapid discharge of the gaseous refrigerant through the bypass pipeline.

[0045] For example, please refer to Figure 1 Multiple air outlets 61a can be provided on the side wall of the inlet pipeline 61, meaning that gaseous refrigerant can flow out from each air outlet 61a to increase the air outlet range of the inlet pipeline 61.

[0046] Please see Figure 1 At least some of the vents 61a can be spaced apart along the height of the refrigerant storage space 20a, so that the gaseous refrigerant can quickly fill the entire refrigerant storage space 20a in the height direction.

[0047] In addition, since the intake air pressure gradually decreases from top to bottom, in order to ensure the consistency of the air output, the diameter of each air outlet 61a, which is spaced apart along the height direction, can gradually increase from the top to the bottom of the refrigerant storage space 20a.

[0048] Please see Figure 1At least some of the vents 61a can face the inner container 10. In other words, the gaseous refrigerant in the inlet pipe 61 can be released into the inner container 10 through the vents 61a facing the inner container 10. The gaseous refrigerant can contact the outer wall of the inner container 10 to be cooled at the first time, quickly reduce the temperature around the inner container 10, and greatly improve the heat exchange efficiency.

[0049] Please see Figure 1 The end of the inlet pipe 61 that is close to the refrigerant containment space 20a can be sealed, so that all the gaseous refrigerant in the inlet pipe 61 can be released through the vent 61a on its side wall, thus ensuring the gas pressure in the inlet pipe 61.

[0050] Furthermore, the portion of the inlet pipe 61 located within the refrigerant containment space 20a can be straight, i.e., vertically inserted along the height direction to near the bottom of the refrigerant containment space 20a, or it can be spiral, i.e., circling the inner container 10 at equal intervals, which is beneficial for more uniform heat dissipation of the entire inner container 10.

[0051] In another embodiment, when the refrigerant is liquid refrigerant, since the liquid refrigerant will automatically accumulate from the bottom of the refrigerant storage space 20a, in order to ensure that the liquid refrigerant fully fills the entire refrigerant storage space 20a during heat dissipation and is completely emptied during heating, one end of the outlet pipe 62 can extend into the refrigerant storage space 20a from the bottom and be close to the bottom of the refrigerant storage space 20a, and one end of the inlet pipe 61 can extend into the refrigerant storage space 20a from the top and be close to the top of the refrigerant storage space 20a.

[0052] In one embodiment, the hydrogen storage container further includes a heat dissipation device disposed within the receiving cavity 10a. Both the heat dissipation device and the heating device 80 are removable structures from the receiving cavity 10a. When the hydrogen storage material in the receiving cavity 10a is in a hydrogen-releasing state, only the heating device 80 is disposed within the receiving cavity 10a, and the heat dissipation device is removed. When the hydrogen storage material in the receiving cavity 10a is in a hydrogen-absorbing state, only the heat dissipation device is disposed within the receiving cavity 10a, and the heating device 80 is removed. That is, the heat dissipation device works in conjunction with the refrigerant in the refrigerant receiving space 20a to jointly dissipate heat from the hydrogen storage material.

[0053] For example, please refer to Figure 1 For a hydrogen storage container equipped with an interventional cannula 40, the heat dissipation device and the heating device 80 can be interchangeably inserted into the interventional cannula 40. That is, the heat dissipation device and the heating device 80 can be placed inside the interventional cannula 40 or removed from the interventional cannula 40. This allows the heat dissipation device and the heating device 80 to be replaced while keeping the receiving cavity 10a sealed. In addition, when the heat dissipation device or the heating device 80 malfunctions, the staff can also easily replace it outside the hydrogen storage container.

[0054] The number of interventional sleeves 40 can be one or more, preferably multiple, and adopts a multi-point heat conduction design. The multiple interventional sleeves 40 are redundant with each other. If a certain heat conduction point fails, it will not affect the normal use of the hydrogen storage container, thereby improving the heat power distribution, heating efficiency, heat conduction efficiency and overall reliability.

[0055] The heat dissipation device can be a heat exchange tube connected to an external cold source. The heat exchange tube conducts heat between the external cold source and the containment cavity 10a, thereby cooling the inside of the containment cavity 10a. The type of heat exchange medium in the heat exchange tube is matched with the temperature rise during the hydrogen absorption process of the hydrogen storage container, that is, the phase change temperature of the heat exchange medium is lower than the minimum temperature during the hydrogen absorption process.

[0056] When the heating device 80 is a first heating wire, it is more preferably a first heating wire with the same outer diameter as the inner diameter of the insertion sleeve 40, which can directly contact the heat transfer.

[0057] In one embodiment, the hydrogen storage container may further include a heating element surrounding the outer wall of the inner container 10. When the hydrogen storage material is in a hydrogen absorption state, the heating element is in a non-heating state, and when the hydrogen storage material is in a hydrogen release state, the heating element is in a heating state. That is to say, the heating element can cooperate with the heating device 80 to heat the material, so as to further improve the heating effect.

[0058] The heating element can be a second heating wire or other structures with heating functions.

[0059] Optionally, the heating element and heating device 80 can also be used separately without interfering with each other.

[0060] In one embodiment, please refer to Figure 1 The hydrogen storage container may also include an external temperature sensing element, an internal temperature sensing element, and a temperature sensing sleeve 50. The external temperature sensing element is located in the refrigerant containing space 20a, the temperature sensing sleeve 50 is located in the containing cavity 10a, and the internal temperature sensing element is located inside the temperature sensing sleeve 50. The internal temperature sensing element extends into the hydrogen storage material through the temperature sensing sleeve 50, which can facilitate timely replacement in case of failure.

[0061] For example, please refer to Figure 1 For a hydrogen storage container with multiple intervention sleeves 40, the multiple intervention sleeves 40 can be distributed at intervals in the receiving cavity 10a. The temperature measuring sleeves 50 are arranged in a one-to-one correspondence with the intervention sleeves 40. Each internal temperature measuring element and external temperature measuring element synchronously monitors the temperature of different parts. According to the different number and location of working heat source points, the temperature reading at the corresponding location is used as the temperature control parameter, and the other locations are used as temperature monitoring points to observe the hydrogen absorption or release of hydrogen by the hydrogen storage material at different locations of the container in real time.

[0062] In another embodiment, there may be one interventional cannula 40 and multiple temperature measuring cannulas 50. Multiple temperature measuring cannulas 50 surround the interventional cannula 40, which can observe the temperature of different positions of the inner container 10 in real time, and the temperature measurement accuracy is high.

[0063] In one embodiment, the hydrogen storage container further includes a partition support structure 70 disposed in the receiving cavity 10a. The partition support structure 70 divides the receiving cavity 10a into multiple regions, each region containing hydrogen storage material, thereby increasing the contact area between the hydrogen storage material and hydrogen, and preventing the hydrogen storage material from pulverizing and compacting during hydrogen absorption and desorption, which would affect its absorption and desorption capacity.

[0064] The shape of the partition support structure 70 can be adapted to the number of temperature measuring sleeves 50 and interventional sleeves 40. When the interventional sleeve 40 is a single unit, the partition support structure 70 can adopt a hollow box-shaped porous isolation structure. The pore size of the box-shaped structure material is adapted to the particle size of the hydrogen storage material. The wall thickness can be appropriately increased to increase the hydrogen permeability. The outer wall of the box is attached to the inner wall of the inner container 10, and the inner wall of the box is attached to the interventional sleeve 40. The hydrogen storage material is filled in the box. When there are multiple interventional cannulas 40, the partition support structure 70 can adopt a vertical cylindrical porous isolation structure. The interventional cannulas 40 and the cylindrical partition support structure 70 correspond one-to-one. The interventional cannulas 40 are roughly located at the center of the cylindrical partition support structure 70. Within the receiving cavity 10a, the multiple cylindrical partition support structures 70 can contact and splice each other radially around their circumference to distribute heat evenly. At the same time, the circumferences of the multiple cylindrical partition support structures 70 can contact the space gaps outside the splicing parts to significantly increase the contact area between the hydrogen storage material and hydrogen and improve the hydrogen absorption efficiency.

[0065] Furthermore, based on the volume expansion and pulverization degree of the hydrogen storage material during the hydrogen absorption and desorption process, the initial filling height of the hydrogen storage material within the partition support structure 70 can be determined. When the partition support structure 70 adopts a hollow box-shaped porous isolation structure, the partition support structure 70 accumulates layer by layer within the hydrogen storage container, and the height of the uppermost layer can be appropriately increased to improve the filling height of the hydrogen storage material, facilitating the burial of the temperature sensing element to a suitable depth, so as to more accurately reflect the temperature of the hydrogen storage material powder.

[0066] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in other embodiments," "in yet another embodiment," or "exemplary," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A hydrogen storage container, characterized in that, include: The inner container has an internal cavity for filling with hydrogen storage material; An outer container is fitted over the outer side of the inner container and forms a refrigerant-containing space between the inner container and the inner container; A heat conduction system includes a heating device, a refrigerant pipeline, and a shut-off valve. The heating device is disposed within the receiving cavity. The refrigerant pipeline includes a refrigerant line communicating with the refrigerant receiving space and a bypass line communicating with the refrigerant line. The shut-off valve is used to control the on / off state of the refrigerant line. The bypass line is used to discharge the refrigerant from the refrigerant receiving space. The refrigerant line includes an inlet line and an outlet line. The bypass line is connected to either the inlet line or the outlet line, and both the inlet line and the outlet line are equipped with the shut-off valve. The hydrogen storage material in the containment cavity is in a hydrogen absorption state, the heating device is in a non-heating state, the shut-off valve opens the refrigerant pipeline, and the refrigerant flows through the inlet pipeline and the outlet pipeline in the refrigerant containment space; The hydrogen storage material in the containment cavity is in a hydrogen release state, the shut-off valve shuts off the refrigerant pipeline, the refrigerant in the refrigerant containment space is discharged through the bypass pipeline, so that the refrigerant containment space forms a vacuum atmosphere, and the heating device is in a heating state. Wherein, the refrigerant is a gaseous refrigerant, one end of the inlet pipe extends from the top of the refrigerant containing space into the refrigerant containing space and extends to the bottom of the refrigerant containing space, and the inlet pipe has at least one vent near the bottom of the refrigerant containing space; one end of the outlet pipe extends from the top of the refrigerant containing space into the refrigerant containing space and is near the top of the refrigerant containing space; or, The refrigerant is a liquid refrigerant. One end of the outlet pipeline extends into the refrigerant storage space from the bottom and is close to the bottom of the refrigerant storage space. One end of the inlet pipeline extends into the refrigerant storage space from the top and is close to the top of the refrigerant storage space.

2. The hydrogen storage container according to claim 1, characterized in that, The hydrogen storage container further includes a top plate for sealing the inner container and the outer container, and the heating device extends through the top plate into the receiving cavity; and / or The refrigerant pipeline passes through the top plate and connects to the refrigerant storage space.

3. The hydrogen storage container according to claim 1, characterized in that, The refrigerant is a gaseous refrigerant; the side wall of the inlet pipeline is provided with multiple air outlets.

4. The hydrogen storage container according to claim 3, characterized in that, At least a portion of the vent is oriented toward the inner container; and / or, At least some of the vents are spaced apart along the height direction of the refrigerant containment space; and / or, The end of the inlet pipeline near the bottom of the refrigerant containment space is sealed.

5. The hydrogen storage container according to claim 4, characterized in that, The diameter of each of the air outlets, which are spaced apart along the height direction, gradually increases from the top of the refrigerant containing space to the bottom of the refrigerant containing space.

6. The hydrogen storage container according to claim 1 or 2, characterized in that, The hydrogen storage container also includes a heat dissipation device disposed within the containment cavity, and both the heat dissipation device and the heating device are removable structures from the containment cavity.

7. The hydrogen storage container according to claim 6, characterized in that, The hydrogen storage container also includes an interventional cannula disposed in the receiving cavity, and the heat dissipation device and the heating device can be alternatively inserted into the interventional cannula.

8. The hydrogen storage container according to claim 6, characterized in that, The heat dissipation device is a heat exchange tube connected to an external cold source.

9. The hydrogen storage container according to claim 1 or 2, characterized in that, The heating device includes a first heating wire; and / or, The hydrogen storage container also includes an interventional cannula disposed in the receiving cavity, and the heating device includes a first heating wire extending into the interventional cannula and a thermally conductive powder material filled in the interventional cannula.

10. The hydrogen storage container according to claim 1 or 2, characterized in that, The hydrogen storage container also includes a heating element surrounding the outer wall of the inner container.

11. The hydrogen storage container according to claim 1 or 2, characterized in that, The hydrogen storage container includes an external temperature sensing element, an internal temperature sensing element, and a temperature sensing sleeve. The external temperature sensing element is disposed in the refrigerant containing space, the temperature sensing sleeve is located in the containing cavity, and the internal temperature sensing element is disposed inside the temperature sensing sleeve.

12. The hydrogen storage container according to claim 11, characterized in that, The hydrogen storage container also includes an interventional sleeve for setting the heating device. There are multiple interventional sleeves distributed at intervals in the receiving cavity, and the temperature measuring sleeve is arranged in a one-to-one correspondence with the interventional sleeve.

13. The hydrogen storage container according to claim 11, characterized in that, The hydrogen storage container also includes an intervention sleeve for setting the heating device. There is one intervention sleeve and multiple temperature measuring sleeves, which surround the intervention sleeve.

14. The hydrogen storage container according to claim 10, characterized in that, The hydrogen storage container also includes a partition support structure disposed in the receiving cavity, the partition support structure dividing the receiving cavity into multiple regions, each region respectively accommodating the hydrogen storage material.

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