JP3621849B2 - Fuel cell module - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cylindrical solid electrolyte fuel cell module that improves module output density.
[0002]
[Background]
A schematic structure of a conventional cylindrical solid electrolyte fuel cell module is shown in FIG.
[0003]
As shown in FIG. 8, a top plate 02, an upper tube plate 03, and a lower tube plate 04 are disposed in a module body 01 surrounded by a heat insulating material, and a battery chamber is disposed below the lower tube plate 04. 01a is formed.
On the other hand, a fuel supply chamber 05 is formed between the top plate 02 and the upper tube plate 03 of the module body 01. A fuel discharge chamber 06 is formed between the upper tube plate 03 and the lower tube plate 04.
An outer pipe 07 that communicates the fuel supply chamber 05 and the outside of the module main body 01 is connected to the top plate 02 of the fuel supply chamber 05 through the module main body 01. An inner tube 08 that penetrates the lower tube plate 04 is disposed inside the outer tube 07 so as to communicate the fuel discharge chamber 06 and the outside of the module main body 01.
Note that a Ni-based catalyst is disposed at the lower end portion of the outer tube 07 to reform the fuel gas.
[0004]
In the lower tube sheet 04, a cell tube 010 formed by forming a single cell membrane (not shown) on the outer peripheral surface has an upper end positioned in the fuel discharge chamber 06 and a lower side is a battery chamber of the module body 01. Through-holes are supported so as to be positioned within 01a.
Inside the cell tube 010, a fuel injection pipe 011 penetrating the upper tube plate 03 is disposed so as to communicate the inside lower side of the cell tube 010 with the inside of the fuel supply chamber 05.
[0005]
Inside the guide tube 011, a current collecting rod 012 having an upper end positioned in the fuel supply chamber 05 and a lower end positioned near the lower end of the cell tube 010 is disposed. The lower end of the current collecting rod 012 is connected to a current collecting member 013 that is electrically connected to the unit cell membrane and closes the lower end of the cell tube 010. The upper end of the current collecting rod 012 is electrically connected to the outside of the module main body 01 via a nickel current collecting member 013 and a conductive rod 014.
On the other hand, a current collector connector 015 that is electrically connected to the cell membrane is attached to the upper end of the cell tube 010. The current collector connector 015 is connected to another cell tube 01 and the current collector connector (Ni felt). ) Are connected in parallel via 015. Moreover, it connects in series by the mounting direction of the upper end and lower end of a cell tube.
[0006]
A porous ceramic partition plate 016 is provided below the battery chamber 01a of the module body 01. An air preheating chamber 017 communicating with the battery chamber 01a through the partition plate 016 is provided below the partition plate 016.
An air supply pipe 018 communicating with the outside of the module main body 01 is connected to the air preheating chamber 017. Further, one end side of the air discharge pipe 019 is located inside the battery chamber 01a of the module body 01. The air discharge pipe 019 has the other end located outside the module main body 01, and the middle part is disposed so as to pass through the inside of the air preheating chamber 017 so that heat is exchanged.
[0007]
Next, the operation of the cylindrical solid electrolyte fuel cell module having such a structure will be described.
[0008]
The inside of the battery chamber 01a of the module main body 01 is heated to an operating temperature (about 900 to 1000 ° C.), fuel gas 020 such as hydrogen is supplied from the outer pipe 07, and air 021 which is oxidant gas is supplied from the air supply pipe 018. Supply.
The fuel gas 020 supplied via the outer pipe 07 flows from the fuel supply chamber 05 to the lower end side of the cell tube 010 via the injection pipe 011.
On the other hand, the air 021 that has passed through the partition plate 016 flows into the battery chamber 01a through the air preheating chamber 017.
[0009]
When the fuel 020 passes through the porous base tube of the cell tube 010 and is supplied to a cell membrane (not shown), and the air (oxygen) 021 contacts the cell membrane, the cell membrane becomes hydrogen and air ( Oxygen) is reacted electrochemically to generate electric power, and the electric power is sent to the outside through the current collecting member 013 and the conductive rod 014.
[0010]
The remaining fuel gas 022 after being used for power generation flows into the fuel discharge chamber 06 from the upper end of the cell tube 010 and is discharged to the outside through the inner pipe 08, while The remaining air 023 is discharged to the outside through the air discharge pipe 019.
[0011]
[Problems to be solved by the invention]
In the cylindrical solid electrolyte fuel cell module as described above, since the operating temperature is high (around 900 to 1100 ° C.), the top plate 02, the upper tube plate 03, and the lower tube plate 04 disposed in the module main body 01. The material must be made of a heat-resistant alloy. This is because the fuel supply / discharge pipes such as the injection pipe 011 are made of ceramics, so they are fragile and need to maintain soundness over a long period of time so that they will not crack or crack even if the temperature changes. Because there is.
[0012]
Further, since the top plate 02, the upper tube plate 03, and the lower tube plate 04 have to be made thick in consideration of durability so as not to be distorted, the manufacturing cost is further improved. .
[0013]
In view of the above problems, an object of the present invention is to provide a fuel cell module in which the module structure is simplified, the number of module components is reduced, the manufacturing cost is reduced, and the output density is improved.
[0014]
[Means for Solving the Problems]
The invention of [Claim 1] that solves the above-described problem is to supply an oxidant gas and a fuel gas to a cell tube formed by forming a single cell membrane on the outer peripheral surface of a battery chamber under an operating temperature environment. In the cylindrical solid electrolyte fuel cell module in which electric power is obtained by electrochemical reaction of the oxidant gas and the fuel gas,
A module body surrounded by heat insulating material;
A top plate and a tube plate arranged in the module body;
A fuel chamber is formed between the top plate and the tube plate,
Comprising a reaction tube comprising a plurality of cell tubes penetrating the tube plate and facing the openings at both ends in the fuel chamber ,
The fuel chamber has a partition member that partitions the fuel gas supply side and the discharge side of the cell tube into one or a plurality, and supplies fuel from the fuel gas inlet end of one or a plurality of cell tubes. In addition, the fuel gas discharged from the outlet end of the fuel gas of the one or more cell tubes is supplied to the inlet end of the fuel gas of the next one or more cell tubes. Electricity is generated while fuel gas is continuously supplied to each cell tube .
[0016]
Invention [Claim 2], in claim 1, the cell tube Ri U-shaped der, the reaction tube is characterized by having a continuously folded structure above the battery compartment.
The invention of [Claim 3] is characterized in that, in Claim 2, the unit cell film is also formed on a U-shaped tube portion of the cell tube.
[0017]
According to the invention of [Claim 4], the oxidant gas and the fuel gas are supplied to a cell tube formed by forming a single cell membrane on the outer peripheral surface of the battery chamber under an operating temperature environment, thereby In a cylindrical solid electrolyte fuel cell module in which electric power is obtained by electrochemical reaction with fuel gas,
A module body surrounded by heat insulating material;
A top plate and a tube plate arranged in the module body;
A fuel chamber is formed between the top plate and the tube plate,
A plurality of cell tubes are provided so as to pass through the tube plate and face the opening at one end in the fuel chamber, and the opening at the other end of the plurality of cell tubes is connected by a communication member,
The fuel chamber has a partition member that partitions the fuel gas supply side and the discharge side of the cell tube into one or a plurality, and supplies fuel from the fuel gas inlet end of one or a plurality of cell tubes. Then, the fuel gas discharged from the outlet end of the fuel gas of one or a plurality of cell tubes connected via the communication member is supplied to the inlet end of the fuel gas of the next one or a plurality of cell tubes. It supplies, and it produces electric power, supplying fuel gas to each said cell tube sequentially sequentially .
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the fuel cell module according to the present invention will be described below, but the present invention is not limited to these embodiments.
[0019]
[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic view of a fuel cell module, and FIG. 2 is a schematic view of a U-shaped cell tube disposed in the module.
As shown in FIG. 1, in the fuel cell module according to the present embodiment, a fuel cell (for example, hydrogen) and an oxidant gas (for example, air) are formed into a single cell membrane on the outer peripheral surface in a battery chamber under an operating temperature environment. A cylindrical solid electrolyte fuel cell module in which electric power is obtained by electrochemically reacting the oxidant gas and the fuel gas by supplying the membrane cell tube, and the module is surrounded by a heat insulating material A main body 10, a top plate 11 and a tube plate 12 disposed in the module main body 10, a fuel chamber 13 configured between the top plate 11 and the tube plate 12, and the tube plate 12, A reaction tube comprising a plurality of cell tubes 15 provided so as to face the openings 15a and 15b at both ends in the fuel chamber 13, a fuel introduction tube 16 for introducing the fuel 20 from one end side of the module body 10, and others End The fuel discharge pipe 17 for discharging the unreacted fuel 21, the partition member 18 for partitioning the supply side and the discharge side of the fuel gas 20 to be supplied, and the air 22 from one end side provided on the lower end side of the module body 10. An air introduction pipe 19 to be introduced and an air exhaust pipe 20 for exhausting the exhaust air 23 from the other end side are provided.
In the present invention, the supplied fuel is continuously supplied without using the fuel injection pipe for supplying the fuel into the cell tube as in the prior art.
[0020]
In FIG. 1, for the sake of explanation, two cell tubes are used, but a plurality of cell tubes are appropriately arranged in the module main body 11 so as to reach a predetermined power generation level.
[0021]
Here, the fuel chamber 13 uses both the function of supplying the fuel into the cell tube and the function of discharging the fuel from the cell tube.
In the present invention, the fuel supply side refers to the side in which the fuel is circulated from above into the fuel chamber 13 and reacts in the reaction tube, and the fuel discharge side refers to the fuel in the fuel chamber 13 from below and reacts in the reaction tube. The side to be made.
[0022]
In the fuel chamber 13, a fuel introduction pipe 16 that connects the fuel chamber 13 and the outside of the module body 10 is connected. Inside the fuel introduction pipe 16, a fuel discharge pipe 17 for discharging unreacted fuel 21 from the final end of the continuously formed reaction pipe is provided as an inner pipe.
In the case where hydrogen of the fuel gas is supplied by a reforming reaction, a catalyst (for example, a Ni-based catalyst) may be provided in the fuel introduction pipe 16.
[0023]
Hereinafter, the module structure of the present embodiment will be described in detail.
A cell tube 15 formed by forming a cell membrane (not shown) on the outer peripheral surface of the tube plate 12 is positioned so that both end openings 15a and 15b face the fuel chamber 13, and on the lower side. The U-shaped tube 15c is supported so as to be positioned in the battery chamber 11a.
[0024]
The first opening 15a on the fuel supply end side of the cell tube 15 is electrically connected to the outside of the module body 10 via a nickel collecting felt 25a and a conductive rod 25b electrically connected to the unit cell membrane (positive electrode). Side).
On the other hand, a current collecting connector 26 that is electrically connected to the unit cell membrane is attached to an opening of the cell tube 15 through which the fuel is discharged and supplied. The cell tube 15 and the current collecting connector 26 are connected in series.
The last opening 15b on the fuel discharge end side of the cell tube 15 is electrically connected to the outside of the module main body 10 through a nickel current collecting felt 25a and a conductive rod 25b electrically connected to the unit cell membrane. (Negative electrode side) is connected.
[0025]
A porous ceramic partition plate 27 is provided in the lower part of the battery chamber 10 a of the module body 10. An air preheating chamber 28 that communicates with the battery chamber 10 a through the partition plate 27 is provided below the partition plate 27.
An air supply pipe 19 that communicates with the outside of the module body 10 is connected to the air preheating chamber 28. Further, one end side of the air discharge pipe 20 is located inside the battery chamber 10 a of the module body 10. The other end side of the air discharge pipe 20 is located outside the module main body 10, and the middle part is disposed so as to pass through the inside of the air preheating chamber 28 to exchange heat.
[0026]
The partition member 18 that divides the supply side and the discharge side of the fuel gas 20 to be supplied is for continuously supplying the fuel 20 to be supplied into the reaction tube formed continuously. The next cell tube is sequentially supplied.
[0027]
FIG. 2 is a schematic view of the cell tube 15.
As shown in FIG. 2, the cell tube 15 includes a base tube 31, a fuel electrode 32 provided on the surface of the base tube 31, an oxygen ion electric electrolyte 33 provided on the surface of the fuel electrode 32, and the electrolyte An air electrode 34 provided on the surface of 33 is used as a unit cell film 35, which is formed with an interconnector 36 interposed therebetween.
A lead film 37 is provided on the final interconnector 36 on the lower end side of the cell tube 15. A confidential airtight film 39 is formed outside the lead film 37.
A U-shaped tube 40 is joined to the other end of the base tube 31 by a joint 41.
The U-shaped tube 40 is made of the same material as that of the above-mentioned base tube or a material having a current collecting property, and a current collecting film 42 made of the same material as the interconnector 36 and an airtight film 43 for keeping airtightness are formed on the outside. .
[0028]
Note that the cell membrane 35 may be formed on the U-shaped tube to improve the power generation density.
[0029]
Next, the operation of the cylindrical solid electrolyte fuel cell module having such a structure will be described.
[0030]
The inside of the battery chamber 10 a of the module body 10 is heated to an operating temperature (about 900 to 1000 ° C.), and a fuel gas 20 such as hydrogen is supplied from the fuel introduction pipe 16 and air 22 that is an oxidant gas is supplied from the air supply pipe 19. Supply.
The fuel gas 20 supplied through the fuel introduction pipe 16 flows into the cell tube 15 from the opening 15 a that opens to the fuel chamber 13.
The fuel gas that has flowed into the cell tube 15 is used for reaction, discharged from the opening 15b at the other end, and flows into the cell tube 15 through the adjacent opening 15a.
The fuel gas supplied to the final cell tube is discharged from the discharge pipe 17 to the outside.
In addition, the fuel gas 20 to be supplied is preheated by this double tube structure.
[0031]
When hydrogen is generated by arranging a catalyst in the fuel introduction pipe 16 to reform the fuel gas, a gas such as methane or propane can be used as the introduced gas.
[0032]
When the fuel 20 passes through the porous base tube of the cell tube 15 and is supplied to a single cell membrane (not shown), and the air (oxygen) 22 contacts the single cell membrane, the single cell membrane becomes hydrogen and air ( Oxygen) is reacted electrochemically to generate electric power, and the electric power is sent to the outside through the current collecting member 25a and the conductive rod 25b.
[0033]
The exhausted air 23 after being used for power generation is exhausted to the outside through the air exhaust pipe 24.
[0034]
According to the present embodiment, the fuel or air injection pipe, which is essential for the cell tube of the conventional cylindrical fuel cell, is not required, and the module component can be saved in labor.
In addition, as a result of this labor saving, the number of seal parts and current collecting parts is halved.
In addition, an expensive support tube plate having high temperature resistance for supporting the fuel or air injection tube is not required, and the production cost of the module is reduced.
In addition, since the injection tube and the cell tube had a double structure in the past, the tube sheet was thickened to prevent contact due to the occurrence of distortion, but the present invention simply eliminates the need for an injection tube. Since it suffices to support the cell tube on the tube sheet, the thickness of the tube sheet can be made thinner than before.
Furthermore, since the mounting density of the cell tube can be improved, the output density of the entire module can be improved.
[0035]
[Second Embodiment]
A second embodiment of the present invention will be described with reference to FIGS.
3 is a schematic perspective view of the fuel cell module, FIG. 4 is a view as viewed from the arrow A, FIG. 5 is a view as viewed from the arrow B, FIG. 6 is a cross-sectional view taken along the line CC in FIG. It is the schematic of the cell tube arranged.
In the first embodiment described above, the lower end side of the cell tube is connected by a U-shaped tube to form a continuous reaction tube. In this embodiment, instead of using a U-shaped tube, a fuel communication member is provided to provide fuel. Gas is continuously supplied. In this embodiment, the module structure is omitted.
[0036]
As shown in FIGS. 3 to 5, in the present embodiment, a top plate 11 and a tube plate 12 are disposed in a module body (not shown), and the space between the top plate 11 and the tube plate 12 is provided. A fuel chamber 13 is provided.
The tube plate 12 includes a plurality of cell tubes 50 that pass through the tube plate 12 and face the openings 50a and 50b at both ends in the fuel chamber 13, and fastening means such as a pressing ring 51a and a nut 51b. 51 is provided.
A dense sealing member 53 such as zirconia is provided around the cell tube 50 via an airtight bonding film 52.
[0037]
In this embodiment, the unit is composed of three supply-side cell tubes 50 that react while supplying fuel downward, and three discharge-side cell tubes 50 that react while supplying fuel upward. Although a plurality of units are installed in the module body, the present invention is not limited to this.
[0038]
A partition member 18 that divides the supplied fuel gas 20 into a supply side and a discharge side is suspended from the top plate 11 between the top plate 11 and the tube plate 12 in the fuel chamber 13. A seal member 55 is provided on the side to partition the fuel supply side and the fuel discharge side.
[0039]
A heat insulating material 56 is provided inside the battery chamber 10a to maintain the high temperature state of the battery chamber.
[0040]
Further, a seal cap 57 is provided on the lower end side of the cell tube 50 so as to integrally communicate the adjacent cell tubes 50, 50 on the lower end side.
[0041]
At the lower end of the cell tube 50 in the seal cap 57, a current collecting rod 58 is arranged at the center and a porous conductive current collecting member 60 having a plurality of fuel passage holes 59 together with the Ni current collecting member 61. It is installed.
The current collecting rods 58 are electrically connected by the conductive rods 62 disposed on the seal cap 57.
Further, a porous sealing member 63 such as zirconia is provided through a confidential bonding film 52 in order to seal the adjacent cell tubes 50, 50.
In addition, the current collection cap 60 is provided in the upper end side of cell tubes 50 and 50, and it collects electricity.
[0042]
FIG. 7 is a schematic view of the cell tube 50.
As shown in FIG. 7, the cell tube 50 includes a base tube 31, a fuel electrode 32 provided on the surface of the base tube 31, an oxygen ion electric electrolyte 33 provided on the surface of the fuel electrode 32, and the electrolyte The air electrode 34 provided on the surface 33 is used as a unit cell film 35, which is formed in a horizontal stripe pattern with an interconnector 36 interposed therebetween.
A lead film 37 is provided on the final interconnector 36 on the lower end side of the cell tube 50. An airtight film 43 that maintains airtightness is formed on the outer peripheral side of the lead film 37, and a current collecting film 42 that is electrically connected to the lead film 37 is formed on the inner side of the end of the base tube 31. ing.
[0043]
Next, the operation of the cylindrical solid electrolyte fuel cell module having such a structure will be described.
[0044]
The fuel gas 20 supplied from a fuel supply pipe (not shown) flows into the cell tube 50 from the opening 50 a that opens to the fuel chamber 13.
The fuel gas that has flowed into the cell tube 50 is used for the reaction, and the fuel that has reached the lower end of the cell tube 50 is folded back within the seal cap 52 and ascends within the cell tube 50 to enter the fuel chamber 13 from the opening 50b. To be discharged. Next, the cells are sequentially supplied into the cell tubes 50 on the downstream side into the adjacent cell tubes 50 and used for power generation.
Then, the unreacted fuel gas supplied to the final cell tube 50 is discharged to the outside through the discharge pipe.
[0045]
According to the present embodiment, the fuel or air injection pipe, which is essential for the cell tube of the conventional cylindrical fuel cell, is not required, and the module component can be saved in labor.
In addition, as a result of this labor saving, the number of seal parts and current collecting parts is halved.
In addition, an expensive support tube plate having high temperature resistance for supporting the fuel or air injection tube is not required, and the production cost of the module is reduced.
In addition, unlike the first embodiment, a cylindrical cell tube that is currently used can be used without joining a U-shaped tube.
Conventionally, since the injection tube and the cell tube had a double structure, the tube plate was made thick to prevent contact due to the occurrence of distortion. Therefore, the thickness of the tube sheet can be made thinner than before.
Furthermore, since the mounting density of the cell tube can be improved, the output density of the entire module can be improved.
[0046]
In the present invention, the fuel supply is made in the cell tube and the air supply is made outside the cell tube. However, the present invention is not limited to this, and the air supply is made in the cell tube and the fuel supply is made outside the cell tube. It is good also as a structure of.
[0047]
【The invention's effect】
As described above, according to the invention of [Claim 1], the oxidant gas and the fuel gas are supplied to the cell tube formed by forming the unit cell film on the outer peripheral surface of the battery chamber under the operating temperature environment. Thus, in the cylindrical solid electrolyte fuel cell module in which electric power is obtained by electrochemical reaction of the oxidant gas and the fuel gas, the module main body surrounded by a heat insulating material, and the module main body are arranged in the module main body. And a plurality of cell tubes provided between the top plate and the tube plate as a fuel chamber, penetrating the tube plate, and facing the openings at both ends in the fuel chamber. Since the reaction tube is provided, the fuel or air injection tube, which is essential for the cell tube of the conventional cylindrical fuel cell, is not required, and the labor of the module component can be saved. In addition, as a result of this labor saving, the number of seal parts and current collecting parts is halved. In addition, an expensive support tube plate having high temperature resistance for supporting the fuel or air injection tube is not required, and the production cost of the module is reduced. Furthermore, since the mounting density of the cell tube can be improved, the output density of the entire module can be improved.
The fuel chamber has a partition member for partitioning the fuel gas supply side and the discharge side of the cell tube into one or a plurality of fuel cells, and fuel is supplied from the fuel gas inlet end of the one or more cell tubes. And the fuel gas discharged from the outlet end of the fuel gas of the one or more cell tubes is supplied to the inlet end of the fuel gas of the next one or more cell tubes. Since power generation is performed while continuously supplying fuel gas to each of the cell tubes, the mounting density of the cell tubes can be improved, so that the output density of the entire module can be improved. Further, the fuel to be supplied in the continuously formed reaction tube can be continuously supplied by sequentially supplying the discharged fuel into the next cell tube.
[0049]
[Claim 2] The invention of [Claim 2] is that, according to Claim 1, the cell tube is U-shaped, and the reaction tube has a continuously folded structure in the battery chamber. A fuel or air injection pipe, which is essential in the cell tube, is no longer necessary, and the module component can be saved. In addition , the invention of [Claim 3] is the U. The power density of the entire module can be improved by forming a power generation film on the tube portion.
[0050]
According to the invention of [Claim 4], the oxidant gas and the fuel gas are supplied to a cell tube formed by forming a single cell membrane on the outer peripheral surface of the battery chamber under an operating temperature environment, thereby In a cylindrical solid electrolyte fuel cell module in which electric power is obtained by electrochemical reaction with fuel gas,
A module body surrounded by heat insulating material;
A top plate and a tube plate arranged in the module body;
A fuel chamber is formed between the top plate and the tube plate,
A plurality of cell tubes are provided so as to pass through the tube plate and face the opening at one end in the fuel chamber, and the opening at the other end of the plurality of cell tubes is connected by a communication member,
The fuel chamber has a partition member that partitions the fuel gas supply side and the discharge side of the cell tube into one or a plurality, and supplies fuel from the fuel gas inlet end of one or a plurality of cell tubes. Then, the fuel gas discharged from the outlet end of the fuel gas of one or a plurality of cell tubes connected via the communication member is supplied to the inlet end of the fuel gas of the next one or a plurality of cell tubes. Since the fuel gas is supplied and sequentially generated while continuously supplying the fuel gas to each of the cell tubes , the currently used cylindrical tube cell tube can be used without joining the U-shaped tube. Moreover, the packing density of the cell tube can be improved as compared with the U-shaped tube, and the output density of the entire module can be improved. Further, the fuel to be supplied into the continuously formed reaction tube can be continuously supplied by sequentially supplying the discharged fuel into the next cell tube.
[Brief description of the drawings]
FIG. 1 is a schematic view of a fuel cell module according to an embodiment.
FIG. 2 is a schematic view of a U-shaped cell tube disposed in a module.
FIG. 3 is a schematic perspective view of a fuel cell module.
4 is a view as seen from an arrow A in FIG. 3;
5 is a view taken in the direction of arrow B in FIG. 3;
6 is a cross-sectional view taken along the line CC of FIG.
FIG. 7 is a schematic view of a cell tube.
FIG. 8 is a schematic view of a conventional fuel cell module.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Module main body 11 Top plate 12 Tube plate 13 Fuel chamber 15a, 15b Opening part 15 Cell tube 16 Fuel introduction pipe 17 Fuel discharge pipe 18 Partition member 19 Air introduction pipe 20 Fuel 21 Unreacted fuel 22 Air 23 Exhaust air 24 Air discharge Tube 25a Current collecting felt 25b Conductive rod 26 Current collecting connector 27 Partition plate 28 Air preheating chamber 50a, 50b Opening 50 Cell tube 52 Airtight bonding film 53 Seal member 55 Seal member 57 Seal cap 58 Current collecting rod 59 Fuel passage hole 60 Sealing member 61 Ni current collecting member 62 Conductive rod 63 Sealing member 31 Base tube 32 Fuel electrode 33 Electrolyte 34 Air electrode 35 Interconnector 37 Lead film 39 Airtight film 40 U-shaped pipe 41 Joint 42 Current collecting film 43 Airtight film

Claims (4)

The oxidant gas and the fuel gas are electrochemically reacted by supplying the oxidant gas and the fuel gas to a cell tube formed with a single cell membrane on the outer peripheral surface of the battery chamber under the operating temperature environment. In the cylindrical solid electrolyte fuel cell module which is made to obtain electric power,
A module body surrounded by heat insulating material;
A top plate and a tube plate arranged in the module body;
A fuel chamber is formed between the top plate and the tube plate,
Comprising a reaction tube comprising a plurality of cell tubes penetrating the tube plate and facing the openings at both ends in the fuel chamber ,
The fuel chamber has a partition member that partitions the fuel gas supply side and the discharge side of the cell tube into one or a plurality, and supplies fuel from the fuel gas inlet end of one or a plurality of cell tubes. In addition, the fuel gas discharged from the outlet end of the fuel gas of the one or more cell tubes is supplied to the inlet end of the fuel gas of the next one or more cell tubes. A cylindrical solid electrolyte fuel cell module that generates electricity while continuously supplying fuel gas to each cell tube . 2. The fuel cell module according to claim 1, wherein the cell tube is U-shaped, and the reaction tube has a structure that is continuously folded in the battery chamber. 3. The fuel cell module according to claim 2, wherein the unit cell membrane is also formed on a U-shaped tube portion of the cell tube. The oxidant gas and the fuel gas are electrochemically reacted by supplying the oxidant gas and the fuel gas to a cell tube formed with a single cell membrane on the outer peripheral surface of the battery chamber under the operating temperature environment. In the cylindrical solid electrolyte fuel cell module which is made to obtain electric power,
A module body surrounded by heat insulating material;
A top plate and a tube plate arranged in the module body;
A fuel chamber is formed between the top plate and the tube plate,
A plurality of cell tubes are provided so as to pass through the tube plate and face the opening at one end in the fuel chamber, and the opening at the other end of the plurality of cell tubes is connected by a communication member,
The fuel chamber has a partition member that partitions the fuel gas supply side and the discharge side of the cell tube into one or a plurality, and supplies fuel from the fuel gas inlet end of one or a plurality of cell tubes. Then, the fuel gas discharged from the outlet end of the fuel gas of one or a plurality of cell tubes connected via the communication member is supplied to the inlet end of the fuel gas of the next one or a plurality of cell tubes. A cylindrical solid electrolyte fuel cell module that generates power while supplying and sequentially supplying fuel gas to each of the cell tubes .

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