Gas container

Abstract

To suppress the flowing of powders of a storage material from the inside to the outside of a housing space.SOLUTION: A gas container is equipped with a cylindrical container body that has an inner space, a mouth piece that is attached to an axial end portion of the container body and has a communication path communicating the inner space to the outside of the container body, a cylindrical housing member that is disposed in the inner space and has a partitioning wall partitioning the housing space, and a storage material that is formed in a state in which powder is solidified, is housed in the housing space to be held by the partitioning wall, and occludes and discharges gas. The storage material has a first storage portion disposed at an axial center portion in the housing space, and a second storage portion disposed in at least one of axial both end portions of the housing space, and having high breakage resistance as compared with the first storage portion.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a gas container capable of storing and releasing gas.

Background Art

[0002] Gas containers (for example, Patent Document 1) mounted on vehicles and the like for storing and releasing gases such as hydrogen gas and natural gas are known. The gas container described in Patent Document 1 includes a storage material such as a hydrogen storage alloy. The storage material physically or chemically stores and releases the gas to be stored. According to this storage material, the amount of gas that can be stored in the internal space of the container body can be increased.

[0003] By the way, the container body is formed in a cylindrical shape, and the storage material extends in a square bar shape in the axial direction. The gas container is configured such that a plurality of storage materials are bundled and accommodated in the internal space of the container body. The gas container includes an accommodation member disposed in the internal space for accommodating the storage material. The accommodation member is formed in a cylindrical shape and has a honeycomb shape in which a plurality of regularly arranged accommodation spaces partitioned by partition walls are formed. Each accommodation space contains a storage material.

[0004] On the other hand, the storage material generates heat when absorbing gas and absorbs heat when releasing gas. This temperature change of the storage material is related to the performance of gas storage. Therefore, if a temperature deviation occurs in the entire storage material, the performance of the storage material cannot be maximized. Therefore, in the gas container described in Patent Document 1 above, the accommodation member is formed of a material having excellent heat conduction. For this reason, it is possible to reduce the deviation of heat conduction of the storage material and achieve temperature uniformity during gas absorption and release, so that the performance of the storage material can be maximized.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

SUMMARY OF THE INVENTION

PROBLEMS TO BE SOLVED BY THE INVENTION

[0006] By the way, in order to maximize the amount of gas that can be stored in the storage material, it is desirable to form the storage material in a dimension such that almost no gap is generated between the storage material and the partition wall. On the other hand, the storage material is formed in a state in which powders such as a hydrogen storage alloy are solidified. If this storage material is formed in a dimension such that almost no gap is generated between the partition wall, the storage material and the partition wall may rub against each other due to vibrations during vehicle travel, for example, and the storage material may be powdered. At this time, if the axial end portion side of the entire storage material stored and held in the accommodation space is powdered, the powder flows out axially outward from the opening at the axial end of the accommodation space and disappears. As a result, the amount of gas that can be stored in the storage material decreases.

[0007] The present invention has been made in view of such points, and an object thereof is to provide a gas container capable of suppressing the powder of the storage material from flowing out from the inside to the outside of the accommodation space.

MEANS FOR SOLVING THE PROBLEMS

[0008] One aspect of the present invention is a cylindrical container body having an internal space, a base attached to an axial end of the container body and having a communication passage for communicating the internal space to the outside of the container body, and disposed in the internal space. A cylindrical storage member having a partition wall that partitions an accommodation space, a storage material formed in a state in which powders are solidified, stored in the accommodation space, held by the partition wall, and storing and releasing gas, wherein the storage material is disposed at an axial center of the accommodation space. A first storage portion, and a second storage portion disposed at at least one of both axial ends of the accommodation space and having higher breakage resistance than the first storage portion, which is a gas container.

[0009] According to this configuration, it is possible to suppress the powder of the storage material from flowing out from the inside to the outside of the accommodation space.

BRIEF DESCRIPTION OF THE DRAWINGS

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0011] Hereinafter, specific embodiments of the gas container according to the present invention will be described with reference to FIGS. 1 to 6.

[0012] A gas container 1 according to an embodiment is a container that stores gas and discharges the stored gas. The gas container 1 is mounted on a vehicle or the like that uses the stored gas as fuel. The gas stored in the gas container 1 may be any type of gas, but is preferably a fuel gas such as hydrogen gas or natural gas. Further, the pressure of the gas that can be stored in the gas container 1 may be any, but may be a high pressure (for example, 100 MPa or the like). That is, the gas container 1 may be a pressure vessel or a pressure-resistant container.

[0013] As shown in FIG. 1, the gas container 1 includes a container body 10, caps 20 and 30, a reinforcing member 40, a housing member 50, and a storage material 60.

[0014] The container body 10 is a liner for storing gas. The container body 10 has an internal space 11. The internal space 11 has a capacity capable of storing a predetermined amount of gas. The container body 10 is made of a material having gas barrier properties that do not permeate or hardly permeate the gas stored in the internal space 11. Note that the material of the container body 10 may be selected according to the usage environment of the gas container 1 or the like.

[0015] For example, when the gas is hydrogen, the material of the container body 10 is a polyethylene resin, a polypropylene resin, or the like. Note that the interior of the container body 10 may be coated with a material having excellent gas barrier properties such as an ethylene-vinyl alcohol copolymer (EVOH). Further, when the gas container 1 is used for residential purposes or when the mass of the gas container 1 may be large, the material of the container body 10 may be a metallic material such as aluminum or stainless steel.

[0016] The container body 10 is formed in a cylindrical shape so as to enclose the internal space 11. The container body 10 is formed, for example, in a cylindrical shape or a regular polygonal cylindrical shape such that the pressure of the gas is uniformly distributed within the internal space 11. The container body 10 extends in the axial direction. The container body 10 is formed such that the diameter thereof decreases from the axial center side to the axial end side at both axial ends.

[0017] Note that the container body 10 may be formed by connecting and integrating a plurality of components by welding or soldering. For example, as shown in FIG. 3, the container body 10 may be composed of two cylindrical cylindrical components 10a and 10b and two dome-shaped dome components 10c and 10d, and may be configured in a state where the components are arranged in the order of dome component 10c → cylindrical component 10a → cylindrical component 10b → dome component 10d from one axial end side to the other axial end side.

[0018] The container body 10 has openings 12 and 13. The opening 12 is a part that opens at one end of the container body 10 in the axial direction. The opening 13 is a part that opens at the other end of the container body 10 in the axial direction. The openings 12 and 13 are provided at both axial ends of the container body 10. A base 20 is inserted into the opening 12. Also, a base 30 is inserted into the opening 13.

[0019] The bases 20 and 30 are members that allow gas to enter and exit between the internal space 11 of the container body 10 and the outside. That is, the bases 20 and 30 are used for introducing gas from the outside of the container body 10 into the internal space 11 and discharging gas from the internal space 11 to the outside of the container body 10. The bases 20 and 30 are attached to the axial ends of the container body 10. Between the bases 20 and 30 and the container body 10, a sealing member such as an O-ring is interposed to prevent gas leakage from the internal space 11 of the container body 10 to the outside. The bases 20 and 30 are formed of a metal such as aluminum or stainless steel to ensure rigidity.

[0020] The bases 20 and 30 have communication passages 21 and 31. The communication passages 21 and 31 are passages that connect the internal space of the container body 10 to the outside. The communication passages 21 and 31 are connected to a gas pipe and a valve (not shown).

[0021] In addition, the gas container 1 may allow gas to enter and exit through both of the communication passages 21 and 31 of the bases 20 and 30, or as shown in FIG. 2, it may allow gas to enter and exit through only one of them (specifically, the communication passage 31) while a plug is attached to the other (specifically, the communication passage 21). Also, the gas container 1 may have a base 20 or a base 30 for allowing gas to enter and exit attached to either one of the axial ends of the container body 10. Further, the bases 20 and 30 may function as a heat exchanger through which a heat exchange medium circulates for temperature adjustment of the gas container 1.

[0022] Further, the container body 10 may be integrally formed with the bases 20 and 30, for example, by insert molding. Alternatively, the container body 10 may be formed separately from the bases 20 and 30 and integrated with the bases 20 and 30 by inserting the bases 20 and 30 after their formation.

[0023] The reinforcing member 40 is a member that covers the outer surface in the radial direction of the container body 10 to reinforce the container body 10. The reinforcing member 40 is preferably used particularly when the gas container 1 is a pressure-resistant container. The reinforcing member 40 is composed of, for example, high-strength fibers impregnated with resin (i.e., FRP). The high-strength fibers are carbon fibers, glass fibers, aramid fibers, etc. The resin impregnated into the high-strength fibers is a thermosetting resin such as epoxy resin, unsaturated polyester resin, vinyl ester resin, etc.

[0024] The reinforcing member 40 may be formed as a helical layer or a hoop layer, for example, by winding high-strength fibers impregnated with resin around the outer surface of the container body 10, or may be formed by attaching a helical layer or a hoop layer formed in a sheet shape using resin and high-strength fibers to the outer surface of the container body 10. Further, the reinforcing member 40 may be one in which the resin is heat-cured after the formation of the helical layer or the hoop layer.

[0025] The accommodating member 50 is a member that accommodates the storage material 60, which will be described in detail later. The accommodating member 50 is disposed in the internal space 11 of the container body 10. The accommodating member 50 extends in the axial direction of the gas container 1 and is formed in a cylindrical shape. The accommodating member 50 is formed in a honeycomb shape. The accommodating member 50 has a partition wall 51 and an accommodation space 52.

[0026] The partition wall 51 is a plate-shaped wall portion that partitions the accommodation space 52. The accommodation space 52 is a space for accommodating the storage material 60. The storage material 60 is accommodated in the accommodation space 52 and held by the partition wall 51. A plurality of accommodation spaces 52 are provided. The plurality of accommodation spaces 52 are arranged radially from the axis center and radially around the axis center so that the honeycomb shape of the accommodating member 50 is formed.

[0027] Each accommodation space 52 extends in a columnar shape in the axial direction. The cross-section obtained by cutting each accommodation space 52 with a plane orthogonal to the axial direction may be a regular polygon such as a regular hexagon. When the cross-section of the accommodation space 52 is a regular hexagon, the accommodation space 52 is partitioned by six partition walls 51. Also, the cross-sectional shape of each accommodation space 52 may be constant regardless of the axial position. All the accommodation spaces 52 may be formed in the same shape as each other, or may be formed in different shapes from each other. Two adjacent accommodation spaces 52 may be partitioned in a state where the partition walls 51 partitioning the respective accommodation spaces 52 are in contact with each other, or may be partitioned by a common single partition wall 51.

[0028] The partition wall 51 is formed in a shape corresponding to the shape of the accommodation space 52. The partition wall 51 is stretched in the internal space 11 of the container body 10 corresponding to a plurality of accommodation spaces 52. The partition wall 51 is formed of a heat conductive material and functions as a heat exchanger. The heat conductive material constituting the partition wall 51 is a material having a thermal conductivity at normal temperature (for example, 25°C) higher than the thermal conductivity of air, and specifically, metals, alloys, ceramics, etc. typified by stainless steel, aluminum, alumina, silicon carbide, etc.

[0029] Incidentally, the partition wall 51 may be formed by integrating plate materials by welding or adhesion, etc., or may be formed by extrusion molding and firing ceramic raw materials, etc. Also, the thickness of the partition wall 51 is desirably not excessive in order to reduce the weight of the gas container 1 and increase the gas storage amount, and for example, it is preferably less than 1 mm.

[0030] Further, the partition wall 51 may have a communication path that connects the adjacent accommodation spaces 52 to each other. This communication path is provided to evenly distribute the gas throughout the entire internal space 11, make the gas concentration and heat in the internal space 11 uniform or substantially uniform, and improve the gas occlusion / discharge performance. One or more communication paths may be provided for each partition wall 51. When two or more communication paths are provided in one partition wall 51, they may be provided axially spaced apart continuously or intermittently.

[0031] The central portion of the accommodation member 50 is formed hollow. A connecting portion 53 is integrated with the central portion of the accommodation member 50. The connecting portion 53 is formed in a cylindrical shape and extends toward the caps 20 and 30. One axial end side of the connecting portion 53 on the cap 20 side protrudes axially from one axial end of the accommodation member 50. The connecting portion 53 is formed of the same material as the partition wall 51.

[0032] The storage material 60 is a member that occludes and discharges gas. The storage material 60 is accommodated in the accommodation space 52 and held by the partition wall 51. Note that the storage material 60 may be accommodated in all the accommodation spaces 52 of the accommodation member 50, or may be limited to and accommodated in a part of all the accommodation spaces. The accommodation space 52 in which the storage material 60 is accommodated is limited in part in order to make the accommodation space 52 in which the storage material 60 is not accommodated function as a gas flow path and equalize the gas concentration in the internal space 11.

[0033] The storage material 60 is formed in a columnar shape following the shape of the accommodation space 52. The storage material 60 extends in the axial direction. The cross-section of the storage material 60 cut by a plane perpendicular to the axial direction corresponds to the cross-section of the accommodation space 52 and may be a regular polygonal shape such as a regular hexagon. The storage material 60 is formed of a material corresponding to the type of gas to be stored. Examples of the material of the storage material 60 include porous carbon materials such as carbon nanotubes, porous metal complexes (i.e., MOF), zeolites, hydrogen storage alloys, and metal hydrides.

[0034] The storage material 60 is formed in a solid state of powders such as primary particles and secondary particles, that is, in a pellet shape. According to the pellet-shaped storage material 60, a large contact area of the storage material 60 with respect to the gas can be ensured, so that the gas occlusion and release performance can be improved. Incidentally, the volume of the storage material 60 is preferably close to 100% with respect to the volume of the accommodation space 52 in order to ensure the gas storage amount, but 90% or more is sufficient. The storage material 60 is formed by cross-linking the powder of the storage material material with a cross-linking agent or binding it with a binder.

[0035] The storage material 60 has performance that varies according to the axial position. Specifically, the storage material 60 is configured such that the damage resistance at the axial end is higher than that at the axial center. This damage resistance is an index indicating the difficulty of powdering the storage material 60 solidified with powder. This damage resistance can be rephrased as strength, rigidity, abrasion resistance, viscosity, elastic force, etc.

[0036] Incidentally, when the amount of a cross-linking agent or the like that cross-links the material powder of the storage material 60 increases, the amount of the storage material 60 that can be accommodated in the accommodation space 52 decreases by that amount, and the amount of gas that the storage material 60 can store decreases, resulting in a decrease in the occlusion and release performance of the storage material 60. Therefore, in the storage material 60, the fact that the damage resistance at the axial end is higher than that at the axial center is synonymous with the fact that the occlusion and release performance at the axial end is lower than that at the axial center.

[0037] The storage material 60 has a first storage portion 61 and a second storage portion 62. The first storage portion 61 is disposed at the axial center of the accommodation space 52. The second storage portion 62 is disposed at each of the axial both ends of the accommodation space 52. The damage resistance of the second storage portion 62 is higher than that of the first storage portion 61. That is, the storage material 60 has a structure in which the damage resistance is low and the occlusion and release performance is high in the first storage portion 61 at the axial center, while the occlusion and release performance is low and the damage resistance is high in the second storage portion 62 at the axial end.

[0038] Further, the first storage part 61 and the second storage part 62 may be integrally formed into a pellet shape and integrally inserted into the accommodation space 52 when the gas container 1 is assembled, or they may be separately formed into a pellet shape and sequentially inserted into the accommodation space 52 when the gas container 1 is assembled.

[0039] When the first storage part 61 and the second storage part 62 are separately formed, the second storage part 62 may be disposed at the axial end of the accommodation space 52 in a state of being press-fitted into the accommodation member 50. In this case, as shown in FIG. 6, the second storage part 62 may have an inclined part 62a. The inclined part 62a is a tapered part that inclines so that the outer diameter increases from a part near the axial center of the accommodation space 52 to a part near the axial end. The maximum outer diameter of the second storage part 62 is larger than the inner diameter of the accommodation member 50, that is, the diameter of the accommodation space 52. Also, the minimum outer diameter of the second storage part 62 preferably coincides with the diameter of the accommodation space 52 in order to increase the gas storage amount, but it may be smaller than the diameter of the accommodation space 52.

[0040] Hereinafter, an example of a method for manufacturing the gas container 1 will be described. First, two cylindrical parts 10a and 10b and two dome parts 10c and 10d constituting the container body 10 are prepared by injection molding or the like. Then, the base 20 is attached to the opening 12 of one dome part 10c together with a sealing member, and the base 30 is attached to the opening 13 of the other dome part 10d together with a sealing member.

[0041] Also, a honeycomb-shaped accommodation member 50 is prepared, and a pellet-shaped first storage part 61 and two second storage parts 62 are prepared. Then, first, the first storage part 61 is inserted into the accommodation space 52 of the accommodation member 50, and then the two second storage parts 62 are inserted into the accommodation space 52 from both axial ends of the accommodation member 50. When this process is performed, the first storage part 61 of the storage material 60 is disposed at the axial center of the accommodation space 52, and the second storage part 62 is disposed at the axial end of the accommodation space 52. Then, the insertion and arrangement of the first storage part 61 and the second storage part 62 into the accommodation space 52 of this accommodation member 50 are performed for each accommodation space 52, that is, for each storage material 60.

[0042] Furthermore, the insertion and arrangement of the second storage part 62 into the storage space 52 may be realized by press-fitting the second storage part 62 having the inclined part 62a into the housing member 50. Also, during this insertion and arrangement, the second storage part 62 and the partition wall 51 may be adhered to each other with an adhesive or the like.

[0043] Next, the housing member 50 that houses and holds the storage material 60 is fixed to the base 30 attached to the opening 13 of the other dome part 10d. The housing member 50 is inserted into the two cylindrical parts 10a and 10b of the container body 10, and the other dome part 10d and the two cylindrical parts 10a and 10b are connected and integrated by welding or the like. Further, while integrating the connecting part 53 with the housing member 50 and bringing it into contact with the base 20 on the opening 12 side of one dome part 10c, the housing member 50 is fixed to the base 20. Then, the integrated product of the other dome part 10d and the two cylindrical parts 10a and 10b of the container body 10 and one dome part 10c are connected by welding or the like, and finally, the reinforcing member 40 is covered on the outer surface of the container body 10. In this way, the gas container 1 is manufactured.

[0044] The operation of the gas container 1 will be described. In the gas container 1, a housing member 50 that houses and holds the storage material 60 is disposed in the internal space 11 of the container body 10. The housing member 50 has a partition wall 51 that partitions the storage space 52, and is formed in a honeycomb shape in which the partition wall 51 is stretched so that a plurality of storage spaces 52 are regularly arranged in the internal space 11. The storage material 60 is stored in the storage space 52 and held by the partition wall 51. The partition wall 51 is formed of a heat conductive material. Therefore, since the internal space 11 is thermally homogenized throughout, the temperature of the storage material 60 in the internal space 11 is homogenized.

[0045] Furthermore, the partition wall 51 is in contact with the base 20 via the connecting portion 53 and is thermally connected to the base 20. In this case, since the partition wall 51 indirectly exchanges heat with the base 20, the internal space 11 and thus the storage material 60 can be efficiently and rapidly temperature-controlled. Therefore, according to the gas container 1, the occlusion of gas into the storage material 60 and the release of gas from the storage material 60 in the internal space 11 can be smoothly performed.

[0046] In the gas container 1, when gas is supplied into the internal space 11 of the container body 10 via the base 30, the gas flows into each storage space 52 of the storage member 50 through the axial end face on the base 30 side of the storage member 50 disposed in the internal space 11. The gas that has flowed into the storage space 52 circulates from the base 30 side to the base 20 side of the storage space 52 and is gradually occluded by the storage material 60 stored and held in the storage space 52.

[0047] Furthermore, the gas that has flowed into the storage space 52 in which the storage material 60 is not disposed among all the storage spaces 52 circulates through the storage space 52 from the base 30 side to the base 20 side. At this time, in a structure in which the partition wall 51 has a communication path connecting the adjacent storage spaces 52, a part of the gas that has circulated through the storage space 52 flows into the adjacent storage space 52 through the communication path.

[0048] In this way, in the gas container 1, the internal space 11 can be uniformly filled with gas throughout, and the gas concentration can be made uniform. In particular, according to a structure in which the storage material 60 is not disposed in a part of all the storage spaces 52 or a structure in which the above-described communication path is provided in the partition wall 51, the gas flow path can be extended throughout the internal space 11, so that the gas can be spread throughout the internal space 11.

[0049] As described above, according to the gas container 1, the occlusion and release performance of gas in the storage material 60 can be fully utilized to improve the storage and release performance.

[0050] In the gas container 1, the storage material 60 has a first storage portion 61 disposed at the axial center of the accommodation space 52 and a second storage portion 62 disposed at both axial ends of the accommodation space 52. And the breakage resistance of the second storage portion 62 is higher than that of the first storage portion 61. For this reason, even when the first storage portion 61 collapses and pulverizes due to vibration or the like, the second storage portion 62 is suppressed from pulverizing, so that the powder of the second storage portion 62 flowing out axially outward from the opening at the axial end of the accommodation space 52 is suppressed.

[0051] Further, the first storage portion 61 is held by the partition wall 51 that partitions the accommodation space 52 in the accommodation member 50, is disposed at the axial center in the accommodation space 52, and is sandwiched between the second storage portions 62 at both axial ends. In this structure, even when the first storage portion 61 is pulverized, the powder of the first storage portion 61 is confined in the space surrounded by the partition wall 51 and the axial end faces of the two second storage portions 62. Therefore, the powder of the first storage portion 61 flowing out from the inside of the accommodation space 52 (specifically, the opening at the axial end of the accommodation space 52) to the outside (specifically, axially outward) and disappearing is suppressed.

[0052] Thus, according to the gas container 1, it is possible to suppress the powder of the storage material 60 from flowing out from the inside of the accommodation space 52 to the outside, thereby suppressing the decrease in the occlusion / release performance associated with the decrease in the storage material 60.

[0053] Also, according to the structure in which the second storage portion 62 is press-fitted into the accommodation member 50 and disposed at the axial end of the accommodation space 52 in the press-fitted state, it is not necessary to use an adhesive or the like to fix the second storage portion 62 to the partition wall 51 in the accommodation space 52. For this reason, the amount of the storage material 60 can be increased by the amount of not using an adhesive or the like in the accommodation space 52, the occlusion amount of the gas can be increased, and the occlusion / release performance of the gas in the storage material 60 can be improved.

[0054] Furthermore, according to the structure in which the second storage part 62 has an inclined part 62a that inclines so that the outer diameter increases from a part closer to the axial center of the accommodation space 52 to a part closer to the axial end, when the second storage part 62 is press-fitted into the accommodation member 50, it becomes easier to insert the second storage part 62 into the accommodation space 52. For this reason, the gas container 1 can be easily assembled, and the manufacturing of the gas container 1 can be simplified.

[0055] By the way, in the above-described embodiment, the second storage part 62 having relatively high breakage resistance in the storage material 60 is arranged at both axial ends of the accommodation space 52. However, the present invention is not limited to this, and the second storage part 62 having relatively high breakage resistance in the storage material 60 may be arranged at at least one of the axial ends of the accommodation space 52. In this modified form, compared with a configuration in which the wear resistance of the storage material 60 is relatively low and uniform in the axial direction, when the storage material 60 is powdered, the opening through which the powder flows out from the inside to the outside of the accommodation space 52 is limited to either one of the axial ends. Therefore, the amount of powder flowing out from the accommodation space 52 can be reduced.

[0056] Also, in this modified form, particularly, in a structure in which either one of the axial end faces of the accommodation member 50 is closed and either one of the axial ends of the accommodation space 52 is closed, the second storage part 62 may be arranged only at the other axial end of the accommodation space 52.

[0057] Note that the present invention is not limited to the above-described embodiments and the like, and various modifications can be made without departing from the spirit of the present invention.

Explanation of Reference Numerals

[0058] 1: Gas container, 10: Container body, 11: Internal space, 20, 30: Base, 50: Accommodation member, 51: Partition wall, 52: Accommodation space, 60: Storage material, 61: First storage part, 62: Second storage part, 62a: Inclined part.

Claims

1. A cylindrical container body having an internal space, A base attached to an axial end of the container body and having a communication passage for communicating the internal space to the outside of the container body, A cylindrical storage member disposed in the internal space and having a partition wall for partitioning a storage space, A storage material formed in a solidified state of powder, stored in the storage space, held by the partition wall, and capable of occluding and releasing gas, comprising The storage material A first storage portion disposed at an axial center of the storage space, A second storage portion disposed at at least one of both axial ends of the storage space and having higher breakage resistance than the first storage portion, having A gas container in which the performance of the second storage portion for occluding the gas is lower than the performance of the first storage portion for occluding the gas.

2. The gas container according to claim 1, wherein the second storage portion is disposed in the storage space in a state of being press-fitted into the storage member.

3. A cylindrical container body having an internal space, A base attached to an axial end of the container body and having a communication passage for communicating the internal space to the outside of the container body, A cylindrical storage member disposed in the internal space and having a partition wall for partitioning a storage space, A storage material formed in a solidified state of powder, stored in the storage space, held by the partition wall, and capable of occluding and releasing gas, comprising The storage material A first storage portion disposed at an axial center of the storage space, A second storage portion disposed at at least one of both axial ends of the storage space and having higher breakage resistance than the first storage portion, having The second storage part is a gas container that is disposed in the storage space in a state of being press-fitted into the housing member.

4. The gas container according to claim 2 or 3, wherein the second storage part has an inclined part that inclines so that an outer diameter increases from a part closer to the axial center part of the storage space to a part closer to the axial end part.

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