JP2000351602A - Hydrogen supply system for hydrogen fueled equipment - Google Patents

Abstract

(57) [Problem] To provide a hydrogen supply system capable of rapidly filling a required hydrogen amount of a fuel cell when the required hydrogen amount cannot be satisfied due to a response delay of a reformer. A hydrogen supply system (1) includes a reformer (3) that generates hydrogen from a raw material such as alcohol and gasoline and supplies the hydrogen to a fuel cell (2), and a hydrogen storage device that can store and release the hydrogen. 15. The hydrogen storage 15
Hydrogen as first storage unit 15 ₁ easily absorb, and a second storage unit 15 ₂ easy to release hydrogen. The hydrogen was subjected to a dehumidification process in the hydrogen from the reformer 3 is temporarily occluded in the first storage section 15 _1, and then the high pressure release hydrogen obtained by releasing the occluded hydrogen second storage unit 15 ₂ Absorb. When it is not possible to satisfy the required amount of hydrogen fuel cell 2 by the response delay of the reformer 3, so as to satisfy the required hydrogen amount, to release hydrogen from the second storage unit 15 _2, moisturized in its release hydrogen And then supplied to the fuel cell 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for supplying hydrogen to a device using hydrogen as a fuel, and more particularly to a reformer for producing hydrogen from a raw material such as alcohol or gasoline to supply hydrogen to a device using hydrogen as a fuel. The present invention relates to a hydrogen supply system provided with a vessel.

[0002]

2. Description of the Related Art Conventionally, as a hydrogen supply system of this type, a hydrogen storage alloy having a hydrogen storage alloy as a hydrogen storage material has been used in order to satisfy a shortage of hydrogen supply to a fuel cell due to a response delay of a reformer. A device equipped with a device is known (for example, see Japanese Patent Application Laid-Open No. 2-56866).

[0003]

Problems to be Solved by the Invention As a hydrogen storage material,
Ideally, a material that easily absorbs hydrogen and easily releases hydrogen is ideal.However, currently known hydrogen-absorbing materials are those that easily absorb hydrogen and hardly release hydrogen, while those that occlude hydrogen. Those that are hard to do have properties far from ideal, such as easy release of hydrogen.

Under such circumstances, for example, when a hydrogen storage material that does not easily release hydrogen is used in the conventional hydrogen storage device, the shortage of the hydrogen supply amount due to a delay in the response of the reformer or the like can be quickly solved. In the case where a hydrogen storage material that cannot store hydrogen sufficiently is used, there is a possibility that the shortage of the hydrogen supply amount cannot be satisfied due to the insufficient storage amount.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hydrogen supply system capable of quickly filling a required hydrogen amount of a device when the required hydrogen amount cannot be satisfied by a reformer. And

[0006] In order to achieve the above object, according to the present invention,
In a hydrogen supply system including a reformer that generates hydrogen from a raw material such as alcohol or gasoline to supply hydrogen to a device using hydrogen as a fuel, the hydrogen generated by the reformer is absorbed and released. A first storage unit having a first hydrogen storage material, and a second storage unit having a second hydrogen storage material. In both hydrogen storage materials, the first hydrogen storage material is superior to the second hydrogen storage material with respect to the ease of hydrogen storage, while the second hydrogen storage material is superior to the second hydrogen storage material in terms of ease of hydrogen storage. The hydrogen storage material of No. 2 is superior to the first hydrogen storage material, and after dehumidifying the hydrogen from the reformer, the hydrogen is temporarily stored in the first storage unit, and then the hydrogen is stored. The hydrogen obtained by releasing hydrogen is stored in the second storage unit, A hydrogen supply system for hydrogen-fueled equipment, wherein when the required hydrogen amount of equipment cannot be satisfied by the reformer, the stored hydrogen is released from the second storage unit in order to satisfy the required hydrogen amount. Is provided.

[0007] For example, the reformer is operated while the equipment is at rest, and the hydrogen generated in the reformer is subjected to a dehumidifying process and then stored in the first storage unit. This hydrogen storage has a property that the first hydrogen storage material easily stores hydrogen,
And because the dehumidification treatment is applied to hydrogen,
And it is performed sufficiently.

In the transfer of hydrogen from the first storage unit to the second storage unit, the release of the stored hydrogen from the first storage unit is performed in consideration of the fact that the first hydrogen storage material has a property of hardly releasing hydrogen. This is performed by increasing the temperature of the first hydrogen storage material by heating, whereby high-pressure released hydrogen is obtained. The second hydrogen storage material in the second storage unit has a property of hardly storing hydrogen, but the released hydrogen from the first storage unit is at a high pressure and is sufficiently stored in the second storage unit.

[0009] When the operation of the equipment is started, hydrogen is released from the second storage unit and supplied to the equipment. The supply of the released hydrogen is performed until the reformer started at the same time as the operation start of the apparatus reaches a steady state. Release of hydrogen from the second storage unit is performed quickly and sufficiently because the second hydrogen storage material has a property of easily releasing hydrogen.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hydrogen supply system 1 shown in FIG.
Is mounted on an electric vehicle powered by a fuel cell 2 as a device using hydrogen as a fuel.

In the hydrogen supply system 1, the reformer 3
Is for generating hydrogen from a raw material such as alcohol or gasoline. In order to supply the generated hydrogen to the fuel cell 2, a supply port 4 is connected to an inlet 5 of the fuel cell 2 via a supply pipe 6. You. The outlet 7 of the fuel cell 2 is connected to the combustion system of the reformer 3 via a discharge pipe 8, whereby the fuel cell 2
The combustible components in the exhaust gas are burned, and the generated heat is used for the reforming reaction in the reformer 3.

In the supply pipe 6, the first
Three-way valve 3V ₁ is also a second three-way valve 3 to the fuel cell 2 side
V ₂ are each installed. The first of the first three-way valve 3V ₁
Second port p1, p2 upstream and respectively connected to the downstream side, and the first second three-way valve 3V ₂ of supply pipe 6, the second
The ports p1 and p2 are connected to the upstream side and the downstream side of the supply pipe 6, respectively, as described above. Third of the first three-way valve 3V ₁
Port p3 and the second third port p3 of the three-way valve 3V ₂ is connected via a conduit 9 _1, 3-way valve 3 to the conduit 9 ₁
V ₃ is the device. The first and second of the _third three-way valve 3V3
Port p1, p2 the first conduit 9 _1, second three-way valve 3
V ₁ and 3V ₂ are respectively connected. And downstream of the second three-way valve 3V ₂ in the feed pipe 6, the second conduit 9 _1,
And between the third three-way valve 3V _2, 3V ₃ is connected via another conduit 9 _2, first two-way valve 2V ₁ is apparatus to the conduit 9 _2.

The first and second humidifiers 10 ₁ and 10 ₂ have a humidifying function and a dehumidifying function, respectively, and are selectively used. A first communication port 11 is provided at one end of the first and _second humidifiers. A second communication port 12 is provided at the other end. During both the first communication port 11 is connected via line 13 _1, its conduit 13 ₁
The fourth three-way valve 3V ₄ is apparatus. The fourth three-way valve first 3V _4, second ports p1, p2 the first conduit 13 _1, second
Connected to the humidifiers 10 ₁ and 10 ₂ , respectively.
Port p3 is connected to the third port p3 of the third three-way valve 3V ₃ through a conduit 14. Both second communication port 12 between is connected by a conduit 13 _2, the fifth three-way valve 3 to the conduit 13 ₂
V ₅ is the device. The fifth three-way valve first 3V _5, second port p1, p2 the first conduit 13 _2, second humidistat 10 _1,
It is connected to the 10 ₂ side, and the third port p3 conduit 1
4 through ₁ are connected to the inlet side of the hydrogen reservoir 15. In that conduit 14 ₁ is the sixth three-way valve 3V ₆ is apparatus, the first, second port p1, p2, respectively on the inlet side of the fifth three-way valve 3V ₅ side and the hydrogen reservoir 15 of the conduit 14 ₁ is connected, the third port p3 is connected via a conduit 14 ₂ on the outlet side of the hydrogen reservoir 15.

The hydrogen storage 15 is generated by the reformer 3.
3 V of the first three-way valve₁, 3rd three-way valve 3V_Three, Fourth
Three-way valve 3V_Four, First or second humidity controller 10₁, 10_Two,
Fifth three-way valve 3V_FiveAnd 6th three-way valve 3V₆Supplied via
And occlude it, and release the occluded hydrogen.
3-way valve₆, 5th three-way valve 3V_Five, First or second humidity controller
10₁, 10_Two, 4th three-way valve 3V_Four, 3rd three-way valve 3V_Three
And the second three-way valve 3V _TwoOr through the sixth three-way valve 3V
₆, 5th three-way valve 3V_Five, First or second humidity controller 10₁,
10_Two, 4th three-way valve 3V_Four, 3rd three-way valve 3V_ThreeAnd the first
1 two-way valve 2V₁To the fuel cell 2 via
be able to.

[0015] The hydrogen storage unit 15 has first and reservoir 15 ₁ having a first hydrogen storage material MH _1, the second and the reservoir 15 ₂ having a second hydrogen storage material MH _2. As the first and second hydrogen storage materials MH ₁ and MH ₂ , a hydrogen storage alloy or a carbon material is used. Temperature indicating the first plateau region of the hydrogen storage material MH ₁ is with respect to a relatively high temperature storage and ease of hydrogen from the second higher than that of the hydrogen storage material MH _2, therefore the reformer 3 first of hydrogen storage material MH ₁ is superior to the second hydrogen storage material MH _2, a second hydrogen storage material M with respect to release and ease of occlusion of hydrogen at room temperature under
H ₂ is better than the first hydrogen storage material MH _1. In other words, with respect to the hydrogen storage characteristics of the two hydrogen storage materials MH ₁ and MH ₂ , the first hydrogen storage material MH ₁ is more equilibrium in hydrogen storage than the _second hydrogen storage material MH ₂ under the same temperature and the same pressure. The pressure is low. On the other hand, with respect to the hydrogen release characteristics, at the same temperature and the same pressure, the second hydrogen storage material MH ₂
Equilibrium pressure of hydrogen compared to the hydrogen absorption material MH ₁ release is higher for. In the embodiment, the first hydrogen storage material MH ₁ is made of an AB5 alloy, for example, an MmNi _4.9 Al _0.1 alloy, and the second hydrogen storage material MH ₂ is made of an AB5 alloy, for example, MmN
i _{Made of 4.77} Al _0.23 alloy. In each chemical formula, Mm
Means lantern-based misch metal.

The first storage unit 15 _1, the first hydrogen storage material M
One or more with a built-in H _1, the first two in the illustrated example, the second
Includes a tank T _1, T _2, of both tanks T _1, T ₂ inlet 1
Seventh three-way valve 3V ₇ is apparatus to the conduit 20 which connects the 9. The seventh three-way valve 3V ₇ first, the first second port p1, p2 conduit 20, respectively connected to the second tank T _1, T ₂ side, and the third port p3 is the sixth three-way valve 3V ₆ is connected to a conduit 14 ₁ is device. Both tanks T ₁ , T ₂
Are connected by a conduit 22, and the conduit 22
Eighth three-way valve 3V ₈ is apparatus. First in the first, second port p1, p2 conduit 22 of the eighth three-way valve 3V _8,
Connected to the second tanks T ₁ and T ₂ , respectively.
The port p3 is connected to the discharge pipe 8 via the conduit 23.

[0017] The second storage unit 15 ₂ second hydrogen storage material MH
₂ one or more with a built-in, one third tank T in the illustrated example
₃ is provided. First, in the conduit 22 that connects the second tank T _1, T ₂ of the outlet 21, between the first tank T ₁ and the eighth three-way valve 3V _8, one end of another conduit 24 is connected,
The other end is connected to the third tank T ₃ of the inlet 19. In that the conduit 24 is the ninth three-way valve 3V ₉ is device, first ninth three-way valve 3V _9, second port p1, p2 are respectively connected to the first, third tank T _1, T ₃ side of the conduit 24 You. In a conduit 22 connecting the outlets 21 of the first and second tanks T ₁ and T ₂ , a second tank T ₂ and an eighth three-way valve 3 are connected.
Between V _8, one end of another conduit 25 is connected, the other end thereof is connected to the third port p3 of the ninth three-way valve 3V _9. Third
The second two-way valve via a conduit 26 to the outlet 21 of the tank T ₃ 2
V ₂ is connected, the conduit 14 ₂ is connected to the second two-way valve 2V _2. In the embodiment, the first to third tanks T ₁ to T _{1 are used} .
Hydrogen storage capacity of T ₃ are substantially equal.

[0018] The first, second humidistat 10 _1, 10 ₂ in order to improve the hydrogen absorption properties of the first storage unit 15 ₁ performs the dehumidifying process to hydrogen from the reformer 3 and the fuel cell 2 The released hydrogen is humidified in order to improve the power generation performance. In this case, when the water contents of the first and second humidity controllers 10 ₁ and 10 ₂ are respectively Cw1 and Cw2, for example, Cw1 <Cw2
If the first humidistat 10 ₁ dehumidification process, while the second humidistat 10 ₂ are used respectively in the humidification.

As a result of such use, both water contents Cw1,
If the relationship of Cw2 is reversed and Cw1> Cw2, the first
The humidifier 10 ₁ is in a state in which the humidifying function can be exhibited after the dehumidifying function is exhibited, while the second humidifier 10 ₂ is in a state in which the dehumidifying function can be exhibited after the humidifying function is exhibited.
Humidistat 10 ₁ to moistening, while the second humidistat 10 ₂ are used respectively in the dehumidifying process. Such usage is 1
Although two humidifiers are also possible, two humidifiers 10
By providing ₁ and 10 ₂ and providing a difference in water content between them, it is possible to appropriately cope with dehumidification and humidification. Molecular sieves may be used to perform the dehumidifying and humidifying effects as described above.

If necessary, both humidity controllers 10 ₁ , 10
_The function of removing impurity gas components such as carbon dioxide and oxygen contained in hydrogen from the reformer 3 can be given to the second. In the figure, V is a check valve.

(1) For example, in the next morning, an electric vehicle
To ensure that the vehicle starts
The following hydrogen storage operation is performed while the operation of the fuel cell 2 is stopped.
I do. For convenience, before starting the operation, the hydrogen storage 15
First to third tanks T₁~ T _ThreeIs empty
And In each drawing, “E” indicates an empty state, and
“F” indicates the filled state (full state), and “<F / E” indicates
Hydrogen is released and is not empty but not filled
(<F) or empty (E) respectively
Show.

[0022] (1) As shown in -a Figure 1, it switches the ninth three-way valve 3V _9, the first tank T of the first reservoir 15 _1
1 → 9 three-way valve 3V ₉ → the second path of the third tank T ₃ of the reservoir 15 ₂ to block. Further, the second two-way valve 2V ₂ is switched so that the third tank T ₃ → the second two-way valve 2V ₂ → the sixth three-way valve 3
To cut off the route of V _6. In this case, the first and second humidity controllers 1
0 _1, 10 both moisture content of ₂ Cw1, between Cw2 Cw1
It is assumed that the relationship of <Cw2 is established.

In this state, the first, third to eighth three-way valves 3V ₁ , 3V _{3 to} 3V ₈ are switched, and the reformer 3 → first
3-way valve 3V ₁ → 3rd 3-way valve 3V ₃ → 4th 3-way valve 3V ₄ →
1st humidity controller 10 ₁ → 5th 3-way valve 3V ₅ → 6th 3-way valve 3V
₆ → 7th 3-way valve 3V ₇ → 1st tank T ₁ → 8th 3-way valve 3
V ₈ → Establish the path of the discharge pipe 8. The reformer 3 is actuated and the reformer at a relatively high temperature hydrogen produced by 3, first the first storage unit 15 ₁ via the first humidistat 10 ₁ in the process exert state dehumidification to be inserted in the tank T _1. Since the first hydrogen storage material MH ₁ has a property of easily storing relatively high-temperature hydrogen from the reformer 3 and the hydrogen has been subjected to the dehumidifying treatment, the hydrogen is stored smoothly. And it is performed sufficiently. Excess hydrogen not stored in the first hydrogen storage material MH ₁ is led to the combustion system of the reformer 3 through the discharge pipe 8 and burned there, and the generated heat is converted by the reforming reaction in the reformer 3. Used for Impurity gas components, such as carbon dioxide, which are contained in hydrogen and are not occluded by the first hydrogen storage material MH ₁ , are discharged through the outlet 21 of the first tank T ₁ through the outlet 21.
Is exhausted, the concentration increase of the impurity gas component in the first tank T ₁ is avoided. Storage of hydrogen into the first tank T ₁ is carried out until the tank T ₁ is a filling state (full state).

[0024] (1) from the first tank T ₁ of the -b first storage unit 15 ₁ hitting the transfer of hydrogen into the second storage unit 15 ₂ of the third tank T _3, as shown in FIG. 2, By switching the seventh and eighth three-way valves 3V ₇ and 3V ₈ , the first humidity controller 10 ₁ → fifth
Three-way valve 3V ₅ → Sixth three-way valve 3V ₆ → Seventh three-way valve 3V ₇ →
The first tank T ₁ → the eighth three-way valve 3V ₈ → the path of the discharge pipe 8 is cut off, and the ninth three-way valve 3V ₉ is switched to the first tank T ₁ → the ninth three-way valve 3V ₉ → the third tank T Establish the route of ₃ . The release of the stored hydrogen from the first tank T ₁ is as follows:
Taking into account the first release little aptitude the hydrogen in the hydrogen storage material MH ₁ at room temperature under, the first temperature of the hydrogen storage material MH ₁ done by increasing the 60 ° C. or higher by heating, thereby the high pressure Hydrogen released. The second hydrogen storage material MH ₂ in the third tank T _3
Although it has a property that it is difficult to occlude the relatively high-temperature released hydrogen from the _first tank, the third tank T
₃ occluded enough. In this case, by burning hydrogen produced by the reformer 3, it is possible to heat the first hydrogen storage material MH ₁ by the combustion heat.

By switching the _seventh and eighth three-way valves 3V ₇ and 3V ₈ , the reformer 3 → the first three-way valve 3V ₁ → the third three-way valve 3V ₃ → the fourth three-way valve 3V ₄ → the first humidity control. Since the route of the vessel 10 ₁ → the fifth three-way valve 3V ₅ → the sixth three-way valve 3V ₆ → the seventh three-way valve 3V ₇ → the second tank T ₂ → the eighth three-way valve 3V ₈ → the discharge pipe 8 is established, is hydrogen produced in the reformer 3 are inserted into the second tank T _2.

(1) -c As shown in FIG.
K T_ThreeIs filled, while the first tank T₁Is empty
State, when the ninth three-way valve 3V₉Switch to the first
K T ₁→ 9th three-way valve 3V₉→ Third tank T_ThreeBlock the path of
Refuse. The second tank T_TwoWhen is filled
Seventh and eighth three-way valves 3V₇, 3V₈And switch again
Porcelain 1 → First three-way valve 3V₁→ 3rd three-way valve 3V_Three→ No.43
3-way valve 3V4-> first humidity controller 10₁→ Fifth three-way valve 3V_Five→ No.
6 three-way valve 3V₆→ 7th three-way valve 3V₇→ First tank T₁→
8th 3-way valve 3V₈→ Establish the route of the discharge pipe 8 and
Link T₁To absorb hydrogen.

(2) When the electric vehicle starts running, that is, when the fuel cell 2 starts operating, the first and second humidifiers 1
0 _1, 10 both moisture content of ₂ Cw1, between Cw2 Cw1
It is assumed that the relationship of <Cw2 is established. As shown in FIG. 4, the second, third, and fourth three-way valves 3V ₂ , 3V ₃ , and 3V
By ₄ and the first two-way valve 2V ₁ switching, second humidistat 10 ₂ → fourth three-way valve 3V ₄ → the third three-way valve 3V ₃ → second
Three-way valve 3V ₂ → Fifth and sixth three-way valves 3V ₅ , 3V ₆ and second two-way valve 3V 2 in a state where the path of fuel cell 2 is established and first two-way valve 2V ₁ shuts off conduit 18. Switch the valve 2V ₂ to the third tank T ₃ → the second two-way valve 2V ₂ →
6th 3-way valve 3V ₆ → 5th 3-way valve 3V ₅ → 2nd humidity controller 10
_{Establish the second} route. Thereby, the second storage unit 15 ₂ ,
That is, hydrogen is released from the third tank T ₃ , and is supplied to the fuel cell 2 after humidification. The supply of the released hydrogen is performed until the reformer 3 started simultaneously with the start of operation of the fuel cell 2 reaches a steady state. The electric vehicle runs with the operation of the fuel cell 2. Release of hydrogen from the third tank T ₃ is performed smoothly and sufficiently at about 25 ° C. since the second hydrogen storage material MH ₂ has a property of easily releasing hydrogen at room temperature.

[0028] During this time, it switches the first three-way valve 3V ₁ reformer 3 → the first three-way valve 3V ₁ → the third three-way valve 3V ₃ → fourth three-way valve 3V ₄ → the second humidistat 10 _second path Shut off, while
A path from the reformer 3 to the first three-way valve 3V ₁ → the second three-way valve 3V ₂ is established.

(3) When the reformer 3 reaches a steady state
As shown in FIG. 5, the second three-way valve 3V _TwoSwitch to
Porcelain 3 → First three-way valve 3V₁→ 2nd three-way valve 3V_Two→ Fuel electricity
The path of pond 2 is established. This allows electric vehicles to run
Is continued. The second two-way valve 2V_TwoSwitch to the third
Tank T_Three→ 2nd 2-way valve 2V_Two→ 6th three-way valve 3V₆→ No.
5 three-way valve 3V_Five→ Second humidifier 10_TwoWhen you block the route of
Both 9th three-way valve 3V₉Is switched to the second tank T_Two→ No.
9 three-way valve 3V₉→ Third tank T_ThreeEstablish a route.
As a result, hydrogen is stored in the second tank T_TwoFrom the third tank T_Three
Can be transferred to

As shown in FIG. 6, when the third tank T ₃ is in the filling state and the second tank T ₂ is in the empty state, the ninth three-way valve 3V ₉ is switched to switch the second tank T ₂ → Ninth
Path of the three-way valve 3V ₉ → third tank T ₃ is cut off. Further, the seventh and eighth three-way valves 3V ₇ and 3V ₈ are switched to establish the path of the seventh three-way valve 3V ₇ → the second tank T ₂ → the eighth three-way valve 3V ₈ → the discharge pipe 8.

(4) The first humidity controller 1 in the hydrogen storage process
0₁Was used for the dehumidification of hydrogen and its water content
Cw1 increases, while the second humidity controller
10 _TwoWas used for humidification of hydrogen,
The quantity Cw2 decreases, and as a result, when the electric vehicle accelerates
Is the first and second humidity controller 10₁, 10_TwoBoth water content Cw
1 and Cw2, the relationship of Cw1> Cw2 holds.
Shall be.

When the electric vehicle is accelerating, the hydrogen supply amount of the reformer 3 becomes less than the required hydrogen amount of the fuel cell 2 due to a response delay of the reformer 3. In this case, as shown in FIG. 7, the fourth and fifth three-way valves 3V ₄ and 3V ₅ and the first and second two-way valves 2V ₁ and 2V ₂ are switched to change the third tank T ₃ → the second second valve. 2-way valve 2V ₂ → 6th 3-way valve 3V ₆ → 5th 3-way valve 3V ₅ → 1st humidity controller 10 ₁ → 4th 3-way valve 3V ₄ → 3rd
The three-way valve 3V ₃ → to establish a first two-way valve 2V ₁ → path of the fuel cell 2, the shortage of the amount of hydrogen by the reformer 3 filled by releasing hydrogen from the third tank T _3.

When the amount of hydrogen supplied from the reformer 3 satisfies the required amount of hydrogen of the fuel cell 2, the first and second two-way valves 2V ₁ ,
Switches as showed 2V ₂ in FIG. 6, to cut off the path, that is, the third tank T ₃ → ...... → path of the fuel cell 2. The hydrogen consumption in the third tank T ₃ is
Filled by transfer of hydrogen from ₁ .

(5) Even when the electric vehicle decelerates, both the water contents Cw1, Cw of the first and second humidity controllers 10 ₁ , 10 ₂ are obtained.
It is assumed that the relationship of Cw1> Cw2 holds between the two. As shown in FIG. 8, the first, third to sixth three-way valves 3V
_1, 3V ₃ by switching the ~3V _6, the reformer 3 → first three-way valve 3V ₁ → third three-way valve 3V ₃ → fourth three-way valve 3V ₄ → second humidistat 10 ₂ → fifth three-way valve 3V ₅ → 6th 3-way valve 3V ₅ → 7th 3-way valve 3V ₇ → 2nd tank T ₂ → 8th 3-way valve 3V ₈ →
To establish a path of the discharge pipe 8, thereby occluding the excess hydrogen due to the response delay of the reformer 3 to the second tank T _2. If the second tank T ₂ is familiar with the filling state, the excess hydrogen is filled in the first tank T _1.

In the first and second storage sections 15 ₁ and 15 ₂ of the hydrogen storage device 15, the number of tanks may be increased as required, or the first and second storage sections may be used. Material MH
₁ and MH ₂ , so that their storages 15 ₁ , 15 ₂
To increase the hydrogen storage capacity (hydrogen storage capacity). In addition, examples of equipment using hydrogen as fuel include an internal combustion engine in addition to a fuel cell.

[0036]

According to the first aspect of the present invention, by adopting the above means, the hydrogen storage capacity of the hydrogen storage can be improved, and the required amount of hydrogen of the equipment can be satisfied by the reformer. When it is not possible to do so, it is possible to provide a hydrogen supply system capable of quickly filling the required amount of hydrogen with the hydrogen storage.

According to the second aspect of the present invention, it is possible to provide a hydrogen supply system capable of improving the power generation performance of a fuel cell as the device by employing the above means. it can.

According to the third to fifth aspects of the present invention, it is possible to provide a hydrogen supply system having a humidifier that is capable of reliably performing humidification processing and dehumidification processing on hydrogen and that has a convenient humidifier. Can be.

According to the sixth aspect of the present invention, by adopting the above means, the hydrogen storage capacity of the hydrogen storage can be improved, and the required amount of hydrogen of the equipment can be satisfied by the reformer. When it is not possible to provide a hydrogen supply system, the required amount of hydrogen can be more quickly satisfied by the hydrogen storage.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a hydrogen supply system showing a state in which a first tank is being filled with hydrogen while a fuel cell is stopped.

FIG. 2 is an explanatory diagram of a hydrogen supply system showing a state in which hydrogen is transferred from a first tank to a third tank and a second tank is filled with hydrogen.

FIG. 3 is an explanatory diagram of a hydrogen supply system showing a state where a first tank is filled with hydrogen again.

FIG. 4 is an explanatory diagram of a hydrogen supply system showing an operation start state of a fuel cell.

FIG. 5 shows a state in which the electric vehicle is running,
It is explanatory drawing of the hydrogen supply system which shows the state which is transferring hydrogen to a tank.

FIG. 6 is an explanatory diagram of the hydrogen supply system showing a state in which the electric vehicle is running and the second tank can be filled with hydrogen again.

FIG. 7 is an explanatory diagram of a hydrogen supply system showing an acceleration state of the electric vehicle.

FIG. 8 is an explanatory diagram of a hydrogen supply system showing a deceleration state of the electric vehicle.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 hydrogen supply system 2 fuel cell (equipment) 3 reformer 10 ₁ , 10 ₂ first and second humidifier 15 hydrogen storage 15 ₁ , 15 ₂ first and second storage unit Cw1, Cw2 water content MH ₁ , MH ₂ First and second hydrogen storage materials

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masashi Takahashi 5-9-6 Tokodai, Tsukuba, Ibaraki Pref. Inside Tsukuba Research Laboratories, Nippon Heavy Industries, Ltd. (72) Inventor Masaki Ueyama 1-4-4 Chuo, Wako, Saitama No. 1 Inside Honda R & D Co., Ltd. (72) Inventor Junichi Kitagawa 1-4-1 Chuo, Wako-shi, Saitama F-term inside Honda R & D Co., Ltd. 4G040 AA13 AA23 AA25 AA29 5H027 AA02 BA01 BA09 BA14

Claims (6)

[Claims] 1. A hydrogen supply system comprising a reformer (3) for generating hydrogen from a raw material such as alcohol or gasoline in order to supply hydrogen to a device (2) using hydrogen as a fuel. Absorbing the hydrogen produced by (3),
And a hydrogen storage (15) capable of being released,
The hydrogen storage (15) is provided with a first hydrogen storage material (M
A first storage portion with a H ₁₎ and (15 _1), second reservoir having a second hydrogen storage material of (MH ₂₎ and (15 _2), both the hydrogen absorption material (MH _1, MH ₂ ), the first hydrogen storage material (MH ₁ )
Are superior to the second hydrogen storage material (MH ₂ ), while the second hydrogen storage material (MH ₂ ) is superior to the second hydrogen storage material (MH ₂ ) in terms of the ease of releasing the stored hydrogen. M
H ₁ ), the hydrogen from the reformer (3) is subjected to a dehumidifying treatment, and then the hydrogen is stored in the first storage unit (1).
5 ₁ ), and the hydrogen obtained by releasing the stored hydrogen is stored in the second storage unit (15 ₂ ).
When the required amount of hydrogen of the equipment (2) cannot be satisfied by the reformer (3), releasing the stored hydrogen from the second storage unit (15 ₂ ) to satisfy the required amount of hydrogen. A hydrogen supply system for a device using hydrogen as a fuel. 2. Before introducing hydrogen released from the second storage section (15 ₂ ) into a fuel cell (2) as the device,
2. The hydrogen supply system for hydrogen-powered equipment according to claim 1, wherein the released hydrogen is subjected to a humidification treatment. Wherein comprising the dehumidifying processing and humidifying process is performed humidistat (10 _1, 10 _2), the humidistat (10 _1, 1
0 ₂ ) The hydrogen supply system for a device using hydrogen as a fuel according to claim 2, wherein after the dehumidifying function is exhibited, the humidifying function can be exhibited, and after the humidifying function, the dehumidifying function can be exhibited. Wherein said humidistat (10 _1, 10 ₂₎ 2 Taisonae, they humidistat (10 _1, 10 ₂₎ are selectively used, the fuel of hydrogen according to claim 2 or 3, wherein Hydrogen supply system to equipment. 5. In the dehumidification process, both humidity controllers (10
₁ and 10 ₂ ), the one having a smaller water content (Cw1, Cw2) is used, and both humidifiers (1
0 _1, 10 ₂₎ using the one with a lot of water content (Cw1, Cw2) of the hydrogen supply system of hydrogen according to claim 4, wherein the device for the fuel. 6. A hydrogen supply system comprising a reformer (3) for generating hydrogen from a raw material such as alcohol or gasoline in order to supply hydrogen to a device (2) using hydrogen as a fuel. Absorbing the hydrogen produced by (3),
And a hydrogen storage (15) capable of being released,
The hydrogen storage (15) is provided with a first hydrogen storage material (M
A first storage portion with a H ₁₎ and (15 _1), second reservoir having a second hydrogen storage material of (MH ₂₎ and (15 _2), both the hydrogen absorption material (MH _1, MH ₂ ), with respect to the hydrogen storage characteristics, the first
Of the second hydrogen storage material (MH ₁ )
₂ ), the equilibrium pressure of hydrogen storage is lower than that of the second hydrogen storage material (MH ₂ ) at the same temperature and the same pressure.
Since the equilibrium pressure for releasing hydrogen is higher than that of H ₁ ), the hydrogen from the reformer (3) is subjected to a dehumidifying treatment, and then the hydrogen is temporarily stored in the first storage unit (15 ₁ ). The hydrogen obtained by releasing the stored hydrogen is stored in the second storage unit (1).
5 ₂ ), and when the required hydrogen amount of the equipment (2) cannot be satisfied by the reformer (3), the second storage section (15 ₂ ) is used to satisfy the required hydrogen amount. A hydrogen supply system for a device using hydrogen as fuel, characterized by releasing more stored hydrogen.