Hydrogen storage container and hydrogen-powered vehicle

Abstract

The application discloses a hydrogen storage container and a hydrogen power vehicle, and relates to the technical field of hydrogen storage containers, and in particular to a hydrogen storage container and a hydrogen power vehicle. The hydrogen storage container comprises an inner container, an outer container, a high-pressure gas layer arranged between the inner container and the outer container, and a pressure difference control valve. The inner cavity of the inner container is used for storing hydrogen, and the pressure difference control valve can ensure that the hydrogen pressure in the inner container is always less than or equal to the gas pressure of the high-pressure gas layer. The hydrogen storage container provided by the application can ensure that the gas pressure on the outer circumferential surface of the hydrogen storage inner container is always greater than the hydrogen pressure on the inner wall surface, reduce the gas pressure difference between the inner wall surface and the outer wall surface of the hydrogen storage inner container, avoid the phenomenon of hydrogen embrittlement caused by the adsorption of hydrogen by metal materials under the condition of high hydrogen pressure difference, slow down the diffusion rate of hydrogen atoms in the metal lattice, reduce the possibility of local hydrogen accumulation and bubble generation, reduce the probability of hydrogen embrittlement, improve the safety of the hydrogen storage container, and further improve the safety performance of the hydrogen power vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen storage containers, in particular to a hydrogen storage container and a hydrogen-powered vehicle. BACKGROUND

[0002] Hydrogen energy has many advantages such as cleanliness, high efficiency, and renewability, and is a new type of energy that is widely concerned all over the world. Hydrogen fuel, as a typical representative of hydrogen energy application, has many advantages such as high efficiency, environmental protection, small volume, and light weight, and shows good application prospects in the field of transportation and the like.

[0003] At present, high-pressure hydrogen storage has gradually become the choice of new energy vehicle enterprises powered by hydrogen energy because of its relatively mature technology and small conversion efficiency and energy loss in the storage process. High-pressure hydrogen storage needs to be carried out at a pressure of 30 MPa or more, and a hydrogen storage container is usually made of a metal material with high strength. When hydrogen molecules in the hydrogen storage container contact the metal surface, there is an adsorption process, and the adsorption energy and binding energy of hydrogen atoms on the metal surface are relatively low, so there is a certain probability that hydrogen molecules will decompose into hydrogen atoms. When hydrogen atoms are adsorbed on the metal surface and the adsorption surface is subjected to high gas pressure, hydrogen atoms gradually penetrate into the metal interior, and as more and more hydrogen atoms enter the metal interior, the concentration increases and diffuses to the interior of the entire metal material. The arrangement of hydrogen atoms gathered in the metal has some irregularities such as cracks, dislocations, impurities, cavities, and voids. Such aggregation causes uneven distribution of hydrogen atoms in the metal, and further causes uneven distribution of stress and mechanical strength, thereby causing the mechanical properties of the metal material to decrease and the brittleness to increase, and easily causing phenomena such as cracking, bubbling, and rupture. That is, when high-pressure hydrogen storage is carried out, the container is prone to hydrogen embrittlement, which causes the container material to rupture and become brittle, and further reduces the safety performance of the hydrogen-powered vehicle.

[0004] Therefore, it is necessary to improve the existing high-pressure hydrogen storage container to solve the problem that the existing high-pressure hydrogen storage container is prone to hydrogen embrittlement, which causes the container material to rupture and become brittle, so as to improve the safety performance of the hydrogen-powered vehicle. SUMMARY

[0005] The present application aims to provide a hydrogen storage container and a hydrogen-powered vehicle to solve the problem that the existing high-pressure hydrogen storage container is prone to hydrogen embrittlement, which causes the container material to rupture and become brittle, so as to improve the safety performance of the hydrogen-powered vehicle.

[0006] To achieve this purpose, the present application adopts the following technical solutions:

[0007] A hydrogen storage container comprises:

[0008] An inner container for storing hydrogen gas;

[0009] An outer container arranged at the periphery of the inner container;

[0010] a high-pressure gas layer arranged between the inner container and the outer container;

[0011] a differential pressure control valve, the differential pressure control valve comprising a valve body and a pressure piston valve block arranged in the valve body, the valve body connecting the inner container and the outer container, the pressure piston valve block contacting the gas of the high-pressure gas layer at one end and contacting the gas in the inner container at the other end, when the gas pressure in the inner container is greater than the high-pressure gas layer, the pressure piston valve block is slidable and causes the gas in the inner container to be discharged outward.

[0012] Optionally, the valve body has a first gas port communicating with the outside of the container, a second gas port communicating with the high-pressure gas layer, and a third gas port communicating with the inner cavity of the inner container, the first gas port, the second gas port and the third gas port are communicated with each other through a gas channel in the valve body, the pressure piston valve block is arranged in the gas channel, so that the first gas port, the second gas port and the third gas port are not communicated with each other, when the gas pressure in the inner container is greater than the high-pressure gas layer, the pressure piston valve block slides to the second gas port, so that the first gas port and the third gas port are communicated.

[0013] Optionally, the valve body has a first gas channel and a second gas channel, the first gas channel communicates the inner cavity of the inner container with the outside of the container, the second gas channel communicates the inner cavity of the inner container with the high-pressure gas layer, the pressure piston valve block is arranged on the second gas channel, so that the high-pressure gas layer and the inner cavity of the inner container are not communicated, the first gas channel and the second gas channel have a junction, the pressure piston valve block is arranged at the junction to block the first gas channel and the second gas channel at the same time, when the gas pressure in the inner container is greater than the high-pressure gas layer, the pressure piston valve block moves in the second gas channel to move close to the high-pressure gas layer, so that the first gas channel is through.

[0014] Optionally, the pressure piston valve block is provided with a through-hole in the same direction as the first gas channel, when the pressure piston valve block slides on the second gas channel, the second gas channel can be through the through-hole.

[0015] Optionally, the second gas channel is provided with a first limiting protrusion and a second limiting protrusion, the pressure piston valve block slides between the first limiting protrusion and the second limiting protrusion.

[0016] Optionally, the gas of the high-pressure gas layer is inert gas.

[0017] Optionally, the materials of the inner container and the outer container are metal materials; the materials of the inner container and the outer container are one of stainless steel, aluminum alloy, steel or titanium alloy.

[0018] Optionally, a fiber winding layer is arranged on the outer circumferential surface of the outer shell.

[0019] Optionally, the hydrogen storage container further comprises a first gas charging and discharging pipe penetrating the inner wall of the outer shell, a second gas charging and discharging pipe penetrating the outer shell and the inner shell, a gas collecting bag connected to the first gas port, and a pressure gauge for measuring the pressure of the high-pressure gas layer.

[0020] The present application also provides a hydrogen-powered vehicle comprising the hydrogen storage container.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] 1. When storing hydrogen, hydrogen is injected into the inner cavity of the inner shell. If the injected hydrogen makes the gas pressure in the inner shell greater than the gas pressure of the high-pressure gas layer, the pressure difference control valve will discharge the hydrogen in the inner shell, so that the hydrogen gas pressure in the inner shell is always less than the gas pressure of the high-pressure gas layer. The hydrogen storage container provided by the present application makes the gas pressure on the outer circumferential surface of the hydrogen storage inner shell always greater than the hydrogen gas pressure on the inner wall surface, reduces the gas pressure difference between the inner and outer wall surfaces of the hydrogen storage inner shell, avoids the phenomenon of hydrogen embrittlement of metal materials under high hydrogen gas pressure difference, i.e. can slow down the diffusion rate of hydrogen atoms in the metal lattice, reduce the possibility of local hydrogen accumulation and bubble generation, reduce the probability of hydrogen embrittlement, improve the safety of the hydrogen storage container, and further improve the safety performance of the hydrogen-powered vehicle.

[0023] 2. By setting the pressure difference control valve, the hydrogen gas pressure in the inner shell can be effectively controlled to be always less than the gas pressure of the high-pressure gas layer. This helps to reduce the impact force of hydrogen release when opening the container, reduces the dramatic change of pressure in the system, and is beneficial to the stability and safety of the hydrogen storage system. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0025] The structures, proportions, sizes, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to enable those skilled in the art to understand and read, and are not used to limit the defined conditions under which the present application can be implemented, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0026] Figure 1 Structure diagram of hydrogen storage container of embodiment one of the present application;

[0027] Figure 2 Structure diagram of pressure difference control valve of embodiment one of the present application;

[0028] Figure 3 Structure diagram of hydrogen storage container of embodiment two of the present application;

[0029] Figure 4 Structure diagram of Figure 3 Enlarged view of part A;

[0030] Figure 5 Structure diagram of embodiment four of the present application after the inflation gun is inserted into the second charging and exhausting pipe;

[0031] Figure 6 Structure diagram of embodiment four of the present application after the inflation gun is separated from the second charging and exhausting pipe;

[0032] Figure 7 Structure diagram of embodiment four of the present application after the inflation gun is inserted into the second charging and exhausting pipe.

[0033] Illustration: 10, inner container; 20, outer container; 30, high-pressure gas layer; 40, pressure difference control valve; 41, valve body; 411, first gas passage; 412, second gas passage; 42, pressure piston valve block; 43, first gas port; 44, second gas port; 45, third gas port; 46, through hole; 47, first limiting protrusion; 48, second limiting protrusion; 50, fiber winding layer; 61, first charging and exhausting pipe; 62, second charging and exhausting pipe; 621, first electric valve; 622, rubber ring; 63, gas collection bag; 64, pressure gauge; 70, gun barrel; 71, groove ring; 72, second electric valve; 73, air pressure sensing cavity; 74, sensing air pipe; 75, air pressure tablet; 76, iron bar; 80, pressure regulating air pipe. DETAILED DESCRIPTION

[0034] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be a component disposed therebetween.

[0036] The technical solutions of the present application will be further illustrated below in conjunction with the drawings and through specific embodiments.

[0037] Embodiment one:

[0038] With reference to Figures 1 to 3 , the present application provides a hydrogen storage container, which comprises an inner container 10, an outer container 20, a high-pressure gas layer 30 and a differential pressure control valve 40. The inner container 10 is used to store hydrogen gas, the outer container 20 is arranged on the periphery of the inner container 10, the high-pressure gas layer 30 is arranged between the inner container 10 and the outer container 20, and the differential pressure control valve 40 comprises a valve body 41 and a pressure piston valve block 42 arranged in the valve body 41. The valve body 41 is connected to the inner container 10 and the outer container 20, and the valve body 41 has a gas channel inside, which communicates with the outside of the container, the high-pressure gas layer 30 and the inner cavity of the inner container 10. The pressure piston valve block 42 is arranged in the gas channel, and one end of the pressure piston valve block 42 contacts the gas of the high-pressure gas layer 30, and the other end contacts the gas in the inner container 10. When the gas pressure in the inner container 10 is less than that of the high-pressure gas layer 30, the pressure piston valve block 42 can make the inner cavity of the inner container 10, the high-pressure gas layer 30 and the outside of the container not communicate with each other; when the gas pressure in the inner container 10 is greater than that of the high-pressure gas layer 30, a pressure difference is formed at both ends of the pressure piston valve block 42, and the pressure at the end contacting the gas in the inner container 10 is greater than that at the end contacting the high-pressure gas layer 30, so that the pressure piston valve block 42 moves along the gas channel close to the high-pressure gas layer 30, so that the inner cavity of the inner container 10 communicates with the outside of the container, and the gas in the inner container 10 is discharged outward.

[0039] It should be noted that the shapes of the inner container 10 and the outer container 20 can be, but are not limited to, spheres, cubes, cuboids, and the shapes of the inner container 10 and the outer container 20 can be the same or different. The shape of the inner container 10 and the shape of the outer container 20 of the present application are the same, and are both spherical.

[0040] With reference to Figures 1 to 2The valve body 41 has a first gas port 43 communicating with the outside of the container, a second gas port 44 communicating with the high-pressure gas layer 30, and a third gas port 45 communicating with the inner cavity of the inner container 10. The first gas port 43, the second gas port 44, and the third gas port 45 are in communication with each other through a gas channel in the valve body 41. The pressure piston valve block 42 is arranged in the gas channel. When the gas pressure in the inner container 10 is less than the high-pressure gas layer 30, the pressure piston valve block 42 makes the first gas port 43, the second gas port 44, and the third gas port 45 not communicate with each other. When the gas pressure in the inner container 10 is greater than the high-pressure gas layer 30, the pressure piston valve block 42 forms a pressure difference between the two ends, and the pressure of the end contacting the gas in the inner container 10 is greater than the pressure of the end contacting the high-pressure gas layer 30. The pressure piston valve block 42 moves towards the second gas port 44, so that the first gas port 43 and the third gas port 45 are in communication.

[0041] Referring to Figure 2 The valve body 41 has a first gas channel 411 and a second gas channel 412. The first gas channel 411 communicates the inner cavity of the inner container 10 with the outside of the container, and the second gas channel 412 communicates the inner cavity of the inner container 10 with the high-pressure gas layer 30. The pressure piston valve block 42 is arranged on the second gas channel 412, so that the high-pressure gas layer 30 and the inner cavity of the inner container 10 are not in communication. The first gas channel 411 and the second gas channel 412 have a junction, and the pressure piston valve block 42 is arranged at the junction to simultaneously block the first gas channel 411 and the second gas channel 412. One end of the pressure piston valve block 42 on the same axis contacts the gas of the high-pressure gas layer 30, and the other end contacts the gas in the inner container 10. When the gas pressure in the inner container 10 is greater than the high-pressure gas layer 30, the pressure piston valve block 42 moves in the second gas channel 412 towards the high-pressure gas layer 30 to make the first gas channel 411 pass through.

[0042] The pressure piston valve block 42 is provided with a through hole 46 in the same direction as the first air channel 411. When the pressure piston valve block 42 slides on the second air channel 412, the second air channel 412 can pass through the through hole 46. The second air channel 412 is provided with a first limiting protrusion 47 and a second limiting protrusion 48. When the air pressure in the inner container 10 is less than the high-pressure gas layer 30, the pressure piston valve block 42 is pushed by the gas of the high-pressure gas layer 30 to the second limiting protrusion 48. At this time, the through hole 46 is pushed out of the first air channel 411 with the pressure piston valve block 42, so that the first air channel 411 is not through. When the air pressure in the inner container 10 is greater than the high-pressure gas layer 30, a pressure difference is formed at both ends of the pressure piston valve block 42, and the pressure of the end contacting the gas in the inner container 10 is greater than the pressure of the end contacting the high-pressure gas layer 30. The pressure piston valve block 42 is pushed and moves along the second air channel 412 in the direction close to the high-pressure gas layer 30. At this time, the through hole 46 is pushed into the first air channel 411 with the pressure piston valve block 42, so that the first air channel 411 is through, and the gas in the inner container 10 is discharged to the outside of the container.

[0043] It should be noted that the section of the first air channel 411 close to the inner cavity of the inner container 10 and the section of the second air channel 412 close to the inner cavity of the inner container 10 can converge in the same air channel, or can be separated into independent air channels. In the embodiment of the present application, the section of the first air channel 411 close to the inner cavity of the inner container 10 and the section of the second air channel 412 close to the inner cavity of the inner container 10 converge in the same air channel.

[0044] Referring to Figure 1 and Figure 3 , the materials of the inner container 10 and the outer container 20 are metal materials. Alternatively, the materials of the inner container 10 and the outer container 20 are one of stainless steel, aluminum alloy, steel, or titanium alloy. The gas of the high-pressure gas layer 30 is inert gas. Inert gas is not easy to combine with the material, that is, it is not easy to combine with the metal material of the inner container 10 and the outer container 20. The inert gas can provide high air pressure to the outer circumferential surface of the inner container 10 without damaging the inner container 10. At the same time, the existence of inert gas has a certain shield effect, which can reduce the mechanical contact between the inner container 10 and the outer container 20, reduce the possible wear and damage, and prolong the service life of the hydrogen storage container.

[0045] The hydrogen storage container provided by the patent application has the advantages that the hydrogen storage inner container 10 is always subjected to the gas pressure greater than the hydrogen gas pressure on the inner wall surface, the hydrogen storage inner container 10 is subjected to the hydrogen gas pressure difference between the inner wall surface and the outer wall surface reduced, the hydrogen embrittlement phenomenon of the metal material caused by the hydrogen absorption under the condition of the high hydrogen gas pressure difference is avoided, the diffusion rate of the hydrogen atom in the metal lattice is reduced, the possibility of the local hydrogen gas aggregation and the bubble generation is reduced, the hydrogen embrittlement phenomenon is reduced, the safety of the hydrogen storage container is improved, and the safety performance of the hydrogen power vehicle is improved.

[0046] Embodiment two

[0047] With reference to Figures 3 to 4 Compared with the hydrogen storage container provided in the embodiment one, the hydrogen storage container provided in the embodiment two is different in that the outer periphery of the outer container 20 is provided with a fiber winding layer 50. The fiber winding layer 50 has the following advantages: ① strength enhancement, the fiber winding layer 50 can increase the structural strength and pressure resistance of the outer container 20, effectively improve the overall strength of the hydrogen storage container, and reduce the risk of deformation and damage; ② impact resistance, the fiber material has good impact resistance, which can effectively reduce the influence of external impact force on the hydrogen storage container and increase the durability of the container; ③ corrosion resistance, certain fiber materials have good corrosion resistance, which can effectively prevent the container from being eroded by external environmental factors and prolong the service life of the container.

[0048] The hydrogen storage container provided in the embodiment further includes a first gas charging and discharging pipe 61 penetrating the inner wall of the outer container 20, a second gas charging and discharging pipe 62 penetrating the outer container 20 and the inner container 10, a gas collection bag 63 connected to the first gas port 43, and a pressure gauge 64 for measuring the pressure of the high-pressure gas layer 30. The inner cavity of the second gas charging and discharging pipe 62 is provided with a first electric valve 621 and a rubber ring 622.

[0049] Embodiment three

[0050] The hydrogen power vehicle provided in the embodiment further includes the hydrogen storage container.

[0051] Embodiment four

[0052] With reference to Figures 5 to 7 The charging gun provided in the embodiment is applied to the hydrogen power vehicle and includes a gun barrel 70 and a pressure regulating gas pipe 80. The outer periphery of the gun barrel 70 is provided with a groove ring 71 corresponding to the rubber ring 622.

[0053] The second electric valve 72 is arranged on the barrel 70, and is used for closing or opening the inflation gun to fill the hydrogen storage container of the hydrogen-powered vehicle with hydrogen gas.

[0054] The gas pressure sensing cavity 73 is communicated with the gun head of the barrel 70 through the induction gas pipe 74, and the gas pressure tablet 75 is arranged at one end of the gas pressure sensing cavity 73 close to the induction gas pipe 74. The gas pressure tablet 75 is movable in the gas pressure sensing cavity 73, and the gas on both sides of the gas pressure tablet 75 is not communicated. When the pressure regulating gas pipe 80 fills the gas pressure sensing cavity 73 with gas, so that the gas pressure of the gas pressure sensing cavity 73 is greater than the external gas pressure, the gas pressure tablet 75 moves to the connection position of the induction gas pipe 74 and the gas pressure sensing cavity 73, so that the gas pressure sensing cavity 73 is not communicated with the induction gas pipe 74.

[0055] The iron bar 76 is embedded on the inner wall of the gas pressure sensing cavity 73. When the gas pressure tablet 75 is at the connection position of the induction gas pipe 74 and the gas pressure sensing cavity 73, the gas pressure tablet 75 is not in contact with the iron bar 76. When the gas pressure tablet 75 is away from the connection position of the induction gas pipe 74 and the gas pressure sensing cavity 73, the gas pressure tablet 75 is not in contact with the iron bar 76.

[0056] The material of the gas pressure tablet 75 is conductive material, and the gas pressure tablet 75 is electrically connected with the second electric valve 72. The iron bar 76 is electrically connected with the second electric valve 72. When the gas pressure tablet 75 is not in contact with the iron bar 76, the second electric valve 72 is closed.

[0057] Embodiment five:

[0058] The embodiment of the present application also provides a hydrogen filling method for a hydrogen-powered vehicle, which adopts the inflation gun.

[0059] S10, obtaining the gas pressure of the high-pressure gas layer 30 through the pressure gauge 64;

[0060] S20, presetting the gas pressure of the gas pressure sensing cavity 73, and the gas pressure of the gas pressure sensing cavity 73 is lower than the gas pressure of the high-pressure gas layer 30;

[0061] S30, filling the gas pressure sensing cavity 73 with gas through the pressure regulating gas pipe 80, so that the gas pressure of the gas pressure sensing cavity 73 reaches the preset gas pressure of the gas pressure sensing cavity 73;

[0062] S40, inserting the barrel 70 into the second gas charging and discharging pipe 62, and making the rubber ring 622 in the second gas charging and discharging pipe 62 fit into the groove ring 71, so as to avoid hydrogen leakage or air entering during the charging;

[0063] S50, opening the first electric valve 621 and the second electric valve 72, so as to inject hydrogen into the hydrogen storage container;

[0064] S60, when the gas pressure in the hydrogen storage container is greater than the gas pressure in the gas pressure sensing cavity 73, the gas pressure tablet 75 is away from the joint of the sensing gas pipe 74 and the gas pressure sensing cavity 73 and contacts the iron bar 76, the second electric valve 72 is closed, and the first electric valve 621 is closed.

[0065] Preferably, the sensing gas pipe 74 can be elongated to the inside of the hydrogen storage container after the barrel 70 is inserted into the second gas charging and discharging pipe 62.

[0066] The implementation principle of the embodiment is that one side of the gas pressure tablet 75 contacts the hydrogen in the hydrogen storage container, and the other side contacts the gas in the gas pressure sensing cavity 73, the pressure difference between the two sides of the gas pressure tablet 75 makes the gas pressure tablet 75 move and contact the iron bar 76. When the gas pressure tablet 75 contacts the iron bar 76, on the one hand, it indicates that the hydrogen charging to the hydrogen storage container has reached a predetermined hydrogen charging amount, and on the other hand, the gas pressure tablet 75 contacts the iron bar 76 to close the valve of the gas charging gun and stop hydrogen charging.

[0067] The above-described and above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; although the foregoing embodiments of the present application have been described in detail, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features thereof; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydrogen storage container, characterized in that: include: An inner tank (10) for storing hydrogen gas; An outer liner (20) is arranged on the periphery of the inner liner (10); A high-pressure gas layer (30) is provided between the inner liner (10) and the outer liner (20); A pressure differential control valve (40), the pressure differential control valve (40) comprising a valve body (41) and a pressure piston valve block (42) arranged in the valve body (41), the valve body (41) connecting the inner liner (10) and the outer liner (20), and the valve body (41) is at least partially connected between the inner liner (10) and the outer liner (20), one end of the pressure piston valve block (42) contacts the gas in the high-pressure gas layer (30), and the other end contacts the gas in the inner liner (10), when the gas pressure in the inner liner (10) is greater than that in the high-pressure gas layer (30), the pressure piston valve block (42) can slide and discharge the gas in the inner liner (10) outward; The valve body (41) has a first air channel (411) and a second air channel (412), wherein the first air channel (411) connects the inner cavity of the inner liner (10) with the outside of the container, and the first air channel (411) passes through the inner liner (10) and the outer liner (20), and the second air channel (412) connects the inner cavity of the inner liner (10) with the high-pressure gas layer (30), and the pressure piston valve block (42) is arranged on the second air channel (412), so that the high-pressure gas layer (30) is connected to the outer liner (20). The inner cavity of the inner liner (10) is not connected, the first air channel (411) and the second air channel (412) have an intersection, and the pressure piston valve block (42) is arranged at the intersection to simultaneously block the first air channel (411) and the second air channel (412). When the air pressure in the inner liner (10) is greater than the high-pressure gas layer (30), the pressure piston valve block (42) moves in the second air channel (412) toward the high-pressure gas layer (30) to allow the first air channel to be connected.

2. The hydrogen storage container according to claim 1, characterized in that The valve body (41) has a first air port (43) connected to the outside of the container, a second air port (44) connected to the high-pressure gas layer (30), and a third air port (45) connected to the inner cavity of the inner liner (10); the first air port (43) and the third air port (45) are connected through the first air channel (411), and the second air port (44) and the third air port (45) are connected through the second air channel (412); the pressure piston valve block (42) is arranged in the second air channel (412), so that the first air port (43), the second air port (44) and the third air port (45) are not connected to each other, and when the air pressure in the inner liner (10) is greater than the high-pressure gas layer (30), the pressure piston valve block (42) slides toward the second air port (44), so that the first air port (43) and the third air port (45) are connected.

3. The hydrogen storage container according to claim 1, characterized in that The pressure piston valve block (42) is provided with a through hole (46) in the same direction as the first air channel (411). When the pressure piston valve block (42) slides on the second air channel (412), the second air channel (412) can be connected through the through hole (46).

4. The hydrogen storage container according to claim 3, characterized in that A first limiting protrusion (47) and a second limiting protrusion (48) are provided on the second air channel (412), and the pressure piston valve block (42) slides between the first limiting protrusion (47) and the second limiting protrusion (48).

5. The hydrogen storage container according to claim 1, characterized in that The gas in the high-pressure gas layer (30) is an inert gas.

6. The hydrogen storage container according to claim 1, characterized in that The material of the inner liner (10) and the outer liner (20) is a metal material; the material of the inner liner (10) and the outer liner (20) is one of stainless steel, aluminum alloy, steel or titanium alloy.

7. The hydrogen storage container according to claim 1, characterized in that A fiber winding layer (50) is provided on the outer peripheral surface of the outer bladder (20).

8. The hydrogen storage container according to claim 2, characterized in that: The invention also includes a first filling and exhaust pipe (61) passing through the inner wall of the outer liner (20), a second filling and exhaust pipe (62) passing through the outer liner (20) and the inner liner (10), a gas collection bag (63) connected to the first gas port (43), and a pressure gauge (64) for measuring the high-pressure gas layer. A first electric valve (621) and a rubber ring (622) are provided on the inner cavity of the second filling and exhaust pipe (62).

9. A hydrogen-powered vehicle, characterized in that: A hydrogen storage container comprising the hydrogen storage container according to any one of claims 1 to 8.

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