JP2010084783A - Hydrogen storage container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydrogen storage container capable of quickly storing and discharging hydrogen by improving diffusing performance of hydrogen. <P>SOLUTION: The hydrogen storage container 10 includes: a container including a barrel part 24; a cylindrical tube 30; a thermoconductive plate 40; and a composite material 50 including a hydrogen storage alloy. The cylindrical tube 30 is a cylindrical hollow tube, andt has a function as a center shaft or a winding core for winding up the thermoconductive plate 40. A plurality of openings 31 are provided in a side surface of the cylindrical tube 30. The thermoconductive plate 40 is housed in a container 20 in the state of being spirally wound around the cylindrical tube 30. The thermoconductive plate 40 is coated with the composite material 50 including a hydrogen storage alloy to prevent through-holes 41 from being blocked. A plurality of through-holes 41 are arranged to structure one part of a gas passage communicating from the center of the container 20 in the radial direction, corresponding to each opening 31 provided in the cylindrical tube 30, in the state of winding the thermoconductive plate 40 around the cylindrical tube 30. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hydrogen storage container that contains a hydrogen storage alloy that stores or releases hydrogen.

  In recent years, with the growing interest in global environmental problems, the importance of hydrogen as a clean petroleum alternative energy has become very large. For example, fuel cells that generate electricity by chemically reacting hydrogen with oxygen in the air are used in portable power supplies such as mobile information terminals such as mobile phones, notebook computers, and PDAs from automobile power sources and household power supply sources. Application to mobile power supply is being studied.

  Hydrogen is generally obtained by reforming a hydrocarbon fuel such as natural gas, naphtha, liquefied petroleum gas, methanol, etc., and converting the hydrogen into a main fuel gas. In addition, means have been devised such as electrolyzing water with a power generation energy such as a solar cell, and taking out hydrogen by reacting a metal compound with an acid or alkali.

  However, hydrogen is a gas at normal temperatures, and in high-pressure hydrogen tanks and liquefied hydrogen tanks, the hydrogen filling amount is limited, the tank weight increases, and hydrogen is required by controlling large-scale reformers and chemical reactions. Therefore, it has been difficult to apply to a fuel cell as a portable power source or a power source for mobile devices.

Therefore, development of hydrogen storage alloy tanks that store, transport and store hydrogen gas in a hydrogen storage alloy that can be stored in a low-pressure state is underway. Examples of the hydrogen storage alloy material include LaNi ₅ alloy. Since the LaNi ₅ alloy has a hydrogen dissociation pressure of about 0.1 MPa at room temperature, it has advantages such that an expensive pressure-resistant vessel is unnecessary and that hydrogen can be stored and released at a relatively low pressure of 1 MPa or less.

  Here, there are roughly two methods for accommodating the hydrogen storage alloy in the container. One is a method of filling the container with hydrogen storage alloy powder, and the other is a method of kneading the hydrogen storage alloy powder with water, a binder or the like to make a paste, and then using a metal plate or porous material. It is a method in which a metal is applied and filled, and stored in a container in a wound or laminated state.

  The method of filling the hydrogen storage alloy powder has a simple method of filling the container with the hydrogen storage alloy powder, and has the advantage that hydrogen gas is more easily diffused through the gaps between the particles even during storage and release of hydrogen. is there. However, the hydrogen storage alloy expands or contracts in volume when hydrogen gas is stored and released, and is pulverized by repetition of the repetition. Micronized metal powder has a stress applied to the tank wall due to expansion during occlusion because the hydrogen during hydrogen occlusion is pushed deep into the tank by the gas pressure and the distribution of the finely divided powder differs in terms of location and particle size. And the thermal stress due to the exothermic reaction is concentrated locally. As a result, as a result of repeated hydrogen storage and release, there was a problem that the tank wall was fatigued by stress cycles.

  On the other hand, a method in which a solvent, a binder, etc. and hydrogen storage alloy powder are kneaded into a paste, applied to a metal plate or porous metal, filled, and stored in a container in a wound or laminated state is a hydrogen This is an effective method for avoiding the fatigue failure of the tank resulting from the pulverization of the occluded alloy. Further, the winding method is used in chemical batteries and has the advantage of being easy to apply.

Therefore, as in Patent Document 1 or Patent Document 2, the hydrogen storage alloy is kneaded with water or a binder to form a paste (called a composite material), which is applied to a thin metal plate such as punching metal or expanded metal, or A method is disclosed in which a hydrogen storage alloy is filled in a void of a metal porous body, and a sheet obtained by pressure forming is spirally accommodated in a cylindrical container.
JP-A-6-140033 JP-A-8-296798

  In the methods disclosed in Patent Document 1 and Patent Document 2, since the substrate surface to which the paste is applied contains a binder or the like, the thermal conductivity is not as good as that of the hydrogen storage alloy powder alone. Furthermore, in the winding and laminating method, the contact area between the sheets affects the heat transfer amount in the laminating direction. When storing and releasing hydrogen rapidly, it is necessary to rapidly remove or supply heat. To this problem, the sheets are wound and laminated while applying pressure to improve the contact between the sheets. There was a need to do.

  However, by rolling and laminating the sheets while applying pressure, the composite material is compressed and accommodated in the container, so that the path through which hydrogen passes is reduced and the hydrogen diffusibility deteriorates. Has occurred.

  In addition, when filling a metal porous body with a large amount of hydrogen storage alloy, the utilization rate of the porous body is not 100% compared to the case where it is applied to a metal thin plate, but the diffusibility of hydrogen gas is good. There are the following problems. That is, the metal porous material is generally a foam metal represented by a foamed nickel sheet used in a nickel metal hydride battery. This foam metal has a problem that it is expensive and has a surface that is weak in mechanical strength and lacks flexibility. For example, a hydrogen storage alloy is applied to the foamed nickel sheet coated with the electrode mixture. When filled and wound, there was a problem that the foamed nickel sheet was broken.

  The present invention has been made in view of these problems, and its object is to provide a hydrogen-absorbing alloy filled in a cylindrical container in which a heat transfer plate is wound and stored, which can be easily manufactured at low cost. It is an object of the present invention to provide a hydrogen storage container that realizes a rapid hydrogen storage reaction / release by increasing the hydrogen diffusibility and making the hydrogen storage / release reaction uniform throughout the container.

One embodiment of the present invention is a hydrogen storage container. The hydrogen storage container is provided with a cylindrical housing member and a plurality of through holes for circulating hydrogen, and is applied to the heat transfer plate accommodated in the housing member in a wound state. And a plurality of through holes constitute a part of a gas flow path communicating in the stacking direction of the wound heat transfer plates.
According to the said aspect, since the heat exchanger plate is wound and accommodated by the accommodating member, the heat conductivity inside an accommodating member can be improved. Moreover, since the gas flow path formed by the through-hole is formed in the heat transfer plate from the central axis of the storage member toward the radial direction of the storage member, one side of the wound heat transfer plate From one side to the other side is facilitated, and the hydrogen diffusibility in the radial direction of the housing member is improved.

  In the hydrogen storage container of the above aspect, the hydrogen storage alloy may be applied to the heat transfer plate so as not to close the plurality of through holes.

  Further, the hydrogen storage container according to the above aspect further includes a hollow cylindrical tube that is housed in the storage member along the axial direction of the storage member and that has a plurality of openings on the side surface. The pipe connected to the outside of the member is gas-tightly fixed, the heat transfer plate is wound around the cylindrical pipe, and the gas flow path is wound around corresponding to each opening. Each of the heat transfer plates may be provided in the stacking direction. In this case, the gas flow path may be provided in the stacking direction of the wound heat transfer plates at a position not corresponding to each opening. Moreover, the cylindrical pipe | tube may be united with the pipe | tube which connects the exterior and the inside of the said accommodating member.

  According to the present invention, in a hydrogen storage container, it is possible to realize rapid hydrogen storage reaction / release by enhancing heat transfer and hydrogen diffusibility and making the hydrogen storage / release reaction uniform throughout the container. it can. Moreover, by making the hydrogen storage alloy into a paste and applying it to the heat transfer plate, it is possible to suppress pulverization which is a problem when filling the conventional hydrogen storage alloy powder.

An embodiment for carrying out the invention

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

(Embodiment 1)
FIG. 1 is a perspective view showing an appearance of a hydrogen storage container 10 according to the first embodiment. FIG. 2 is a side view showing an appearance of the hydrogen storage container 10 according to the first embodiment. FIG. 2B is a cross-sectional view along the line AA ′ shown in the side view of FIG. The hydrogen storage container 10 includes a container 20, a cylindrical tube 30, a heat transfer plate 40, and a composite material 50 including a hydrogen storage alloy.

  The container 20 includes a bottom part 22, a hollow body part 24, and a lid part 26, and has rigidity and heat conductivity. Examples of the material constituting the container 20 include metals such as nickel-plated steel plates.

  The bottom portion 22 is a disk-shaped member that is substantially equal to the diameter of the body portion 24. The peripheral portion of the bottom portion 22 is joined to one end portion of the body portion 24 by welding or the like, so that the airtightness of the container 20 is maintained.

  The lid part 26 has a structure in which a connection part 28 provided with a gas flow path 27 is disposed on a disk-like member substantially equal to the diameter of the body part 24. Through the gas flow path 27, hydrogen to be stored in the hydrogen storage alloy accommodated in the hydrogen storage container 10 flows from the outside such as a hydrogen cylinder. Further, hydrogen released from the hydrogen storage alloy is sent to the fuel cell via the gas flow path 27. The peripheral edge portion of the lid portion 26 is joined to the other end portion of the body portion 24 by welding or the like, so that the airtightness of the container 20 is maintained. The connecting portion 28 can be connected to and connected to a hydrogen receiving port provided in a fuel cell that is a hydrogen supply destination and a receiving port provided in a hydrogen storage member such as a hydrogen cylinder that is a hydrogen supply source. Thus, an opening / closing mechanism is provided so that hydrogen can be circulated through the gas flow path 27. Although not shown, when the temperature rises in a state where hydrogen is occluded and sealed, the gas pressure inside the container increases. In order to prevent the container from bursting, a safety valve is provided as a high pressure gas release valve.

  The cylindrical tube 30 is a cylindrical hollow tube and serves as a central axis or a winding core for winding the heat transfer plate 40. A plurality of openings 31 are provided on the side surface of the cylindrical tube 30. The number and arrangement of the openings 31 are not particularly limited, but are desirably provided at equal intervals in the circumferential direction and the axial direction of the cylindrical tube 30 from the viewpoint of equalizing the hydrogen flow in the side surface direction of the cylindrical tube 30. The material of the cylindrical tube 30 is not limited as long as the heat conductivity is good, but for example, a metal such as copper or aluminum is suitable. As for copper, it is desirable to use a hydrogen embrittlement resistant material such as oxygen-free copper.

  The cylindrical tube 30 is provided along the central axis of the body portion 24, and one end portion of the cylindrical tube 30 is joined to the bottom portion 22. As a method of joining the cylindrical tube 30 to the bottom portion 22, in addition to welding, one end portion of the cylindrical tube 30 is fitted into a protrusion provided on the bottom portion 22. Thereby, heat conduction from the cylindrical tube 30 to the bottom portion 22 becomes possible, and heat exchange between the inside and the outside of the container 20 can be facilitated.

  The other end of the cylindrical tube 30 is joined to the lid portion 26. As a method of joining the cylindrical tube 30 to the lid portion 26, in addition to welding, a circular protrusion (not shown) provided on the lid portion 26 along the periphery of the gas flow path 27 is used for the other side of the cylindrical tube 30. For example, the end portion may be fitted. In the case of welding, it can join more firmly and the reinforcement effect which prevents the deformation | transformation of the container 20 is also acquired. By these joining, heat conduction from the cylindrical tube 30 to the lid portion 26 becomes possible, and heat exchange between the inside and the outside of the container 20 can be facilitated. The other end of the cylindrical tube 30 is open and communicates with a gas flow path 27 provided in the lid portion 26. As described above, the cylindrical tube 30 has a function as a winding center for winding the heat transfer plate 40 described later, and a flow through which hydrogen stored in the hydrogen storage alloy or hydrogen released from the hydrogen storage alloy flows. It has both a function as a path and a function of promoting heat conduction between the inside and the outside of the container 20. Further, the cylindrical tube 30, the lid portion 26, and the connection portion 28 may be formed as one component. By integrating the cylindrical tube 30, the lid portion 26, and the connecting portion 28, welding and fitting work between the cylindrical tube 30 and the lid portion 26 can be omitted, and the gas flow path 27 and the cylindrical tube 30 communicate with each other. Is possible.

  The heat transfer plate 40 is accommodated in the container 20 while being wound around the cylindrical tube 30 in a spiral shape. The end of the heat transfer plate 40 on the winding center side (cylindrical tube 30 side) is joined to the cylindrical tube 30. Thereby, it is suppressed that a shift | offset | difference arises in the heat exchanger plate 40 wound by the cylindrical tube 30. FIG. As a method for joining the heat transfer plate 40 to the cylindrical tube 30, welding is mentioned. Examples of the material used for the heat transfer plate 40 include copper and aluminum having good thermal conductivity.

  The heat transfer plate 40 is coated with a composite material 50 containing a hydrogen storage alloy so as not to close a through hole 41 described later. In the following description, the heat transfer plate 40 and the composite material 50 may be collectively referred to as a composite material sheet. The composite sheet is obtained by mixing a hydrogen storage alloy powder into a paste form obtained by kneading a hydrogen storage alloy powder into a paste by adding a binder such as carboxymethyl cellulose or polytetrafluoroethylene (PTFE) and water. After being coated, it is dried and pressure-molded with a roller. Examples of the heat transfer plate 40 include metals or alloys such as copper, aluminum, and nickel having good thermal conductivity. Further, examples of the hydrogen storage alloy used for the composite material 50 include a LaNi alloy and a Misch metal alloy. As the hydrogen storage alloy, particles of 10 to 30 μm are preferably used from the viewpoint of improving thermal conductivity and suppressing pulverization. In addition, the mixture 50 is not applied to the joint portion between the heat transfer plate 40 and the cylindrical tube 30, and the heat transfer plate 40 is directly bonded to the cylindrical tube 30. In addition, the composite material 50 is not applied to the outermost peripheral portion of the heat transfer plate 40 in contact with the inner wall of the body portion 24, and the heat transfer plate 40 is in direct contact with the inner wall of the body portion 24.

  FIG. 3 is a plan view showing a state in which the heat transfer plate 40 used in the first embodiment is extended. As shown in FIG. 3, a plurality of through holes 41 are formed in the heat transfer plate 40. In a state where the heat transfer plate 40 is wound and accommodated in the container 20, each through hole 41 is opened without being blocked by the composite material 50. Here, “blocking” refers to a state where the flow of hydrogen is interrupted, and the composite material 50 may enter the through hole 41 as long as the flow of hydrogen is possible.

  In FIG. 3, in order to identify each through-hole 41, the code | symbol was attached | subjected like the through-hole 41a1. The plurality of through holes 41 correspond to the openings 31 provided in the cylindrical tube 30 in a state where the heat transfer plate 40 is wound around the cylindrical tube 30 and communicate with each other in the radial direction from the center of the container 20. 60 (see FIG. 2 (B)). The through holes 41 provided in the heat transfer plate 40 corresponding to the openings 31 provided in the cylindrical tube 30 are preferably arranged so that the gas flow path 60 is linear. However, if the gas flow paths 60 are formed corresponding to the respective openings 31, the centers of the through holes 41 provided in the heat transfer plate 40 corresponding to the respective openings 31 may not necessarily coincide with each other. According to this, since the distance of the gas flow path 60 becomes short, occlusion and discharge | release of hydrogen can be advanced more rapidly. Note that the through hole 41 does not have to be provided in the region of the heat transfer plate 40 facing the inner wall of the body portion 24. According to this, since hydrogen circulates between the hydrogen storage alloy and the opening 31 without going through a useless path, the diffusibility of hydrogen in the container 20 can be improved.

Specifically, in the through hole 41 along the line BB ′ in FIG. 3, openings are respectively made as follows with respect to the −X direction, + X direction, −Y direction, and + Y direction shown in FIG. 31 communicates.
-X direction: Through hole 41b1, Through hole 41b5, Through hole 41b9
+ X direction: Through hole 41b3, Through hole 41b7, Through hole 41b11
-Y direction: through hole 41b2, through hole 41b6, through hole 41b10
+ Y direction: Through hole 41b4, Through hole 41b8, Through hole 41b12
In the heat transfer plate 40 wound around the cylindrical tube 30, the length of one round becomes longer from the winding center to the outer side, so the interval between the through holes 41 located on the outer side is located on the winding center side. The interval between the through holes 41 is gradually longer.

  In the hydrogen storage container 10 configured as described above, a gas flow path including a flow in which hydrogen circulates in the circumferential direction along the heat transfer plate 40 in the mixture 50 applied to the heat transfer plate 40 and a through hole 41. A flow in which hydrogen flows in the radial direction through 60 is generated, and the through holes 41 facilitate the diffusion of hydrogen from one side of the heat transfer plate 40 to the other side.

(Method for producing hydrogen storage container)
The method for manufacturing the hydrogen storage container according to Embodiment 1 will be described more specifically below.

<Production and application of compound material>
First, a composite material (paste) is produced in order to apply the hydrogen storage alloy to the heat transfer plate. A LaNi5 alloy is mechanically pulverized to produce an alloy powder having an average particle size of 30 μm. A 1.2% aqueous solution of carboxymethyl cellulose is mixed with the alloy powder in a ratio of 1: 1 to the weight of the alloy powder. Was made. This mixture was applied to a copper heat transfer plate having a thickness of 0.2 mm with a roller. Thereafter, after passing through a drying step, the heat transfer plate was rolled to a thickness of 0.5 mm using a press device to obtain a composite sheet.

<Creating a hole in the composite sheet and winding it around the core>
The composite material sheet produced by the above procedure was cut into a width of 4 cm and a length of 50 cm, and one end was joined to a cylindrical tube having an outer diameter of 4 mm. In the cylindrical tube, through holes having an inner diameter of 0.8 mm were formed in advance at four positions at equal intervals in the circumferential direction at three positions in the axial direction.

  Further, a through hole having a diameter of 1.6 mm was opened at a predetermined position of the cut material sheet using a press device. The shape of the through hole need not be limited to a round hole, and may be a rectangle or an ellipse. Further, by changing the shape and size according to the position of the cylindrical tube in the longitudinal direction or the radial direction, a device for further uniforming the hydrogen flow distribution may be used. Then, while pressurizing the composite sheet having the through holes, the heat transfer plate is attached to the cylindrical tube that is the winding core so that the through holes provided in the cylindrical tube communicate with the through holes provided in the heat transfer plate. I turned around.

  The heat transfer plate wound around the cylindrical tube was fixed and accommodated in a nickel-plated steel cylindrical vessel having an inner diameter of 18 mm, a height of 5 cm, and a thickness of 0.8 mm. Specifically, a cylindrical tube that is a winding core of a composite sheet wound around the center of the lid portion was welded and fixed, and the lid portion and the container were sealed and accommodated.

  According to the hydrogen storage container 10 described above, since the heat transfer plate 40 is wound and accommodated in the container 20, the heat transfer inside the container 20 can be improved. Further, since the gas flow path formed by the through hole 41 is formed in the heat transfer plate 40 from the opening 31 provided in the cylindrical tube 30 toward the radial direction of the container 20, the wound heat transfer is performed. Hydrogen flow from one side of the hot plate 40 to the other side is facilitated, and the hydrogen diffusibility in the radial direction of the container 20 is improved.

  Further, since the heat transfer plate 40 is joined to the bottom portion 22 and the lid portion 26, heat transfer between the inside of the container 20 and the outside of the container 20 can be facilitated.

(Embodiment 2)
The basic configuration of the hydrogen storage container 10 according to the second embodiment is the same as that of the first embodiment, the description of the same configuration as the first embodiment is omitted as appropriate, and the configuration is different from the first embodiment. The explanation will be focused on.

  FIG. 4 is a plan view showing a state in which the heat transfer plate 40 used in the second embodiment is extended. FIG. 5 is a cross-sectional view taken along line C-C ′ of FIG. 4, showing the configuration of the hydrogen storage container 10 according to the second embodiment. As shown in FIGS. 4 and 5, the hydrogen storage container 10 of the present embodiment does not correspond to the opening 31 (see FIG. 2) provided in the cylindrical tube 30 and does not communicate with the opening 31. A through hole 42 is provided so as to form

  The gas flow path 62 formed by the through hole 42 is preferably deviated from the position where the opening 31 is provided in the axial direction of the container 20. More preferably, the gas flow path 62 formed by the through hole 42 is preferably located in the middle of the adjacent openings 31 in the axial direction of the container 20. Further, the gas flow path 62 formed by the through hole 42 is preferably deviated from the position where the opening 31 is provided in the radial direction of the cylindrical tube 30. More preferably, the gas flow path 62 formed by the through hole 42 is preferably located in the middle of the adjacent openings 31 in the radial direction of the container 20.

  According to this, since the gas flow path 62 formed by the through hole 42 plays an auxiliary role with respect to the gas flow path 60 formed by the through hole 41, the hydrogen storage alloy and the cylindrical tube in the container 20 Hydrogen can be circulated more efficiently with the opening 31 provided at 30.

Specifically, in the through hole 42 along the line CC ′ shown in FIG. 4, the θ = 45 degree direction, the θ = 135 degree direction, the θ = 225 degree direction, and the θ = 315 degree shown in FIG. With respect to the direction, the openings 31 communicate with each other as follows.
θ = 45 degrees direction: through hole 42a3, through hole 42a7
θ = 135 degrees direction: through hole 42a4, through hole 42a8
θ = 225 degrees direction: through hole 42a1, through hole 42a5
θ = 315 degrees direction: through hole 42a2, through hole 42a6

  The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added based on the knowledge of those skilled in the art. The form can also be included in the scope of the present invention.

  For example, in each of the above-described embodiments, the diameter of the through hole 41 provided in the heat transfer plate 40 corresponding to the opening 31 provided in the cylindrical tube 30 may be increased toward the outer periphery. According to this, even if the heat transfer plate 40 in the wound state is loosened, the diameter of the outer through hole 41 is set to the inner side with respect to the adjacent through holes 41 in the stacking direction of the heat transfer plates 40. Since there is a margin with respect to the diameter of the through-holes 41, it is possible to maintain the communication state between the adjacent through-holes 41 in the stacking direction of the heat transfer plates 40 and maintain the gas flow path 60 corresponding to each opening 31. it can. Similarly, the diameter of the through hole 42 that forms the auxiliary gas flow path 62 may be larger toward the outer periphery.

  In addition, in anticipation of loosening of the wound heat transfer plate 40, the winding direction of the heat transfer plate 40, more specifically, when viewed in a cross section as shown in FIG. When the heat transfer plate 40 is wound counterclockwise with respect to the cylindrical tube 30, the outer through hole 41 is counterclockwise with respect to the adjacent through holes 41 in the stacking direction of the heat transfer plates 40. The direction may be shifted in the same direction as the winding direction of the heat transfer plate 40. According to this, even if the heat transfer plate 40 in the wound state is loosened, the center of the outer through hole 41 is the inner side with respect to the adjacent through holes 41 in the stacking direction of the heat transfer plates 40. Since the outer through-hole 41 is displaced in a direction that matches the center of the through-hole 41, a communication state between the adjacent through-holes 41 in the stacking direction of the heat transfer plates 40 is ensured, and the gas flow path 60 corresponding to each opening 31. Can be maintained. Similarly, the through holes 42 forming the auxiliary gas flow paths 62 may be displaced in the same direction as the winding direction of the heat transfer plate 40 with respect to the adjacent through holes 42. As described above, the patterns such as locations and sizes of the through holes 41 and 42 in the heat transfer plate 40 may be various forms and are not limited to the illustrated patterns.

  In the above-described embodiment, both end portions of the cylindrical tube 30 are joined to the bottom portion 22 and the lid portion 26, but either end portion of the cylindrical tube 30 is connected to the bottom portion 22 and the lid portion 26. Even if they are joined, heat exchange between the inside and outside of the container 20 can be facilitated.

(Embodiment 3)
The basic configuration of the hydrogen storage container 10 according to the third embodiment is the same as the embodiment except that the connection part 28, the lid part 26, and the cylindrical tube 30 are integrated parts. The description of the configuration similar to that of the first embodiment is omitted as appropriate, and the configuration different from that of the first embodiment will be mainly described.

  FIG. 6 is a perspective view showing an appearance of the hydrogen storage container 10 according to the third embodiment. In the hydrogen storage container 10 according to Embodiment 3, the lid portion 26 is inserted into the trunk portion 24, and the gap between the lid portion 26 and the trunk portion 24 is sealed.

  FIG. 7 is a diagram showing components in which the connecting portion 28 and the lid portion 26 and the cylindrical tube 30 are integrated. The cylindrical tube 30 is integrated with the connection portion 28 in advance by welding or the like, and the cylindrical tube 30 and the gas flow path 27 provided in the connection portion 28 communicate with each other in a gas-tight manner.

  When producing the hydrogen storage container 10 according to the third embodiment, the components shown in FIG. 7 are prepared, and the heat transfer plate 40 to which the composite material is applied is placed around the cylindrical tube 30 as shown in FIG. Wrap around. The arrangement and structure of the through holes provided in the heat transfer plate 40 and the formation of the gas flow path using the through holes are the same as in the first embodiment.

  Next, as shown in FIG. 9, a component in which the body portion 24 and the bottom portion 22 are integrated is prepared. The trunk | drum 24 and the bottom part 22 may be joined by welding. The inner diameter of the opening part of the body part 24 is equal to or slightly smaller than the outer diameter of the disk part of the lid part 26 to such an extent that the disk part of the lid part 26 shown in FIG. 7 can be inserted.

Next, a member in which the heat transfer plate 40 is wound around the cylindrical tube 30 as shown in FIG. 8 is inserted into the body portion 24 and fixed. When the cylindrical tube 30 is inserted into the body portion 24, it is preferable to have a structure in which the cylindrical tube 30 and the bottom portion 22 are fixed by fitting. When the cylindrical tube 30 is fixed to the bottom portion 22, each member is designed so that the outer periphery of the disk portion of the lid portion 26 is in contact with the inner periphery of the opening portion of the trunk portion 24. And the airtightness in the container 20 is ensured by sealing the clearance gap between the disk part of the cover part 26, and the trunk | drum 24 by welding. The hydrogen storage container 10 according to Embodiment 3 is obtained by the above procedure.
In the hydrogen storage container 10 according to the third embodiment, since the connecting portion 28, the lid portion 26, and the cylindrical tube 30 are integrated parts, the hydrogen storage container 10 can be more easily and reliably manufactured. The advantage that it can be obtained.

  In each of the above-described embodiments, the cylindrical tube 30 is used as the winding center of the heat transfer plate 40. However, the cylindrical tube 30 may not be provided as long as the heat transfer plate 40 can be kept wound. .

  Moreover, in each embodiment mentioned above, although the cylindrical tube 30 and the container 20 are cylindrical, the shape of the cylindrical tube 30 and the container 20 is not restricted to a cylindrical shape. For example, the cylindrical tube 30 and the container 20 may have a polygonal shape, and more specifically, may have a prismatic shape such as a hexagonal column.

1 is a perspective view showing an appearance of a hydrogen storage container according to Embodiment 1. FIG. FIG. 2 (A) is a side view showing the appearance of the hydrogen storage container according to Embodiment 1. FIG. FIG. 2B is a cross-sectional view along the line A-A ′ shown in the side view of FIG. FIG. 3 is a plan view showing a state where a heat transfer plate used in Embodiment 1 is extended. 6 is a plan view showing a state in which a heat transfer plate used in Embodiment 2 is extended. FIG. FIG. 5 is a cross-sectional view taken along line C-C ′ of FIG. 4, showing a configuration of a hydrogen storage container according to Embodiment 2. FIG. 6 is a perspective view showing an appearance of a hydrogen storage container according to Embodiment 3. It is a perspective view which shows the components with which the connection part, the cover part, and the cylindrical tube were integrated. It is a perspective view which shows the state by which the heat exchanger plate was wound around the cylindrical tube. It is a perspective view which shows the components with which the trunk | drum and the bottom part were integrated.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Hydrogen storage container, 20 container, 22 bottom part, 24 trunk | drum, 26 lid part, 30 cylindrical tube, 40 heat-transfer plate

Claims (5)

A cylindrical housing member;
A plurality of through-holes for circulating hydrogen are provided, and the heat transfer plate accommodated in the accommodating member in a wound state;
A hydrogen storage alloy applied to the heat transfer plate;
With
The plurality of through holes constitute a part of a gas flow path communicating in the stacking direction of the wound heat transfer plates.   The hydrogen storage container according to claim 1, wherein the hydrogen storage alloy is applied to the heat transfer plate so as not to block the plurality of through holes. A hollow cylindrical tube that is housed in the housing member along the axial direction of the housing member and has a plurality of openings on the side surface;
The cylindrical tube is gas-tightly fixed to a tube connected to the outside of the housing member,
The heat transfer plate is wound around the cylindrical tube,
3. The hydrogen storage container according to claim 1, wherein the gas flow path is provided in a stacking direction of the wound heat transfer plates corresponding to each of the openings.   The hydrogen storage container according to claim 3, wherein the gas flow path is provided side by side in a stacking direction of the wound heat transfer plates at a position not corresponding to each opening.   The hydrogen storage container according to claim 3 or 4, wherein the cylindrical tube is integrated with a tube that connects the outside and the inside of the housing member.

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