JP5159077B2 - Fuel cell - Google Patents

Description

  The present invention relates to a fuel cell in which a periphery of a fuel cell module housing a fuel cell is covered with a heat insulator.

  In recent years, as a next generation energy, various fuel cell modules in which a plurality of fuel cell stacks are stored in a storage container and fuel cells including the fuel cell modules have been proposed.

  Hydrogen is used as a fuel gas for power generation in this fuel cell, and hydrogen gas and an oxygen-containing gas (usually air) are supplied into the storage container, and the oxygen-containing gas is supplied to the oxygen electrode in the fuel cell. Electric power is generated by bringing them into contact with each other and bringing hydrogen into contact with the fuel electrode in the fuel cell to cause a predetermined electrode reaction.

  Here, for example, in a solid oxide fuel cell, since power is generated at a high temperature of 600 to 900 ° C., it is necessary to raise the fuel cell to this temperature and to maintain the temperature. Therefore, it is necessary to cover the outer surface (surrounding) of the fuel cell module containing the fuel cell with a heat insulating material to suppress the temperature drop of the fuel cell module (fuel cell).

  FIG. 8 shows a conventional fuel cell in which the periphery of the fuel cell module 23 is covered with a heat insulating material 24, and the heat insulating material 24 corresponding to each surface is pressed against each surface of the fuel cell module 23. Thus, the outer surface of the fuel cell module 23 is covered with a heat insulating material 24.

  In addition, by providing the heat insulating material 24 around the fuel cell module 23, the heat radiated from the fuel cell module 23 can be minimized.

Also proposed is a solid oxide fuel cell in which a fuel cell and a current collector plate are stored inside a storage container, a heat insulation board is arranged around the current collector plate, and the storage container and the heat insulation board are in close contact with each other. (For example, refer to Patent Document 1).
JP 2001-176537 A

  However, in the case where the heat insulating material corresponding to each surface is pressed against each surface of the fuel cell module, it is necessary to fix each heat insulating material with all the surfaces with a fastener or the like. There has been a problem that the process of connecting (joining) the heat insulating material to the outer surface of the fuel cell module becomes very complicated.

  In addition, when combining the heat insulating materials corresponding to the respective surfaces of the fuel cell module, the number of mating surfaces of the heat insulating materials increases, so that external cold air flows in through the gap between the mating surfaces of the heat insulating materials, and the fuel cell There is a problem that convection occurs between the module and the heat insulating material on the outer surface, heat radiation from the fuel cell module increases, the temperature of the fuel cell module decreases, and power generation efficiency decreases.

  Further, in the fuel cell described in Patent Document 1, since the heat insulation board is stored inside the storage container and the heat insulation board is brought into close contact with the storage container, the assembly of the storage container becomes complicated and the heat insulation board is aligned. There was a possibility that a gap was formed in the surface, the temperature of the fuel cell was lowered, and the power generation efficiency was lowered.

  Accordingly, an object of the present invention is to provide a fuel cell in which the assembly of the fuel cell module and the heat insulating material is very easy and the power generation efficiency of the fuel cell module can be improved and maintained.

The fuel cell of the present invention includes a fuel cell module in which fuel cells are stored in a storage container, and a heat insulator that covers the outer surface of the fuel cell module, and the heat insulator has a box shape with one surface open. The heat insulating main body and a lid-like member that closes the opening of the heat insulating main body, the heat insulating main body is constituted by one or two members, of the outer surface of the fuel cell module, the lid-like member. While covering all the outer surfaces other than the outer surface to be covered , a cotton-like heat insulating material is provided between the heat insulator and the fuel cell module .

  In such a fuel cell, the outer surface of the fuel cell module is covered and accommodated by a heat insulating body formed of a box-shaped heat insulating main body having one open surface and a lid-like member that closes the opening of the heat insulating main body. Therefore, it is possible to suppress the heat diffusion of the fuel cell generated by the power generation from being diffused outside the fuel cell module. Thereby, the temperature of the fuel cell module can be maintained at a high temperature, and the power generation efficiency can be improved.

Further, the heat insulating body is composed of a box-shaped heat insulating main body having one surface opened and a lid-like member that closes the opening of the heat insulating main body, and the heat insulating main body is composed of one or two members, and is a fuel cell. By covering all outer surfaces of the module other than the outer surface covered with the lid-like member, the number of parts constituting the heat insulator is reduced, and after the fuel cell module is stored in the heat-insulating body, the lid-like member The outer surface of the fuel cell module can be stored in close contact with the inner wall of the heat insulating body simply by placing the fuel cell module on the lid-like member and covering the heat insulating main body from the top. Therefore, the assembly of the fuel cell module and the heat insulating material becomes very easy.

In addition, by configuring the heat insulating body with one or two members, the mating surface of the heat insulating body can be reduced, and air outside the fuel cell is convected from the gap between the mating surfaces of the heat insulating body, thereby It can suppress effectively that the temperature of a module falls, and can improve the power generation efficiency of a fuel cell.
And since the cotton-like heat insulating material is provided in the inner surface of the heat insulation main body, the cotton-like heat insulating material can change flexibly according to the shape of the fuel cell module. Thereby, the fuel cell module can be covered with a heat insulator without any gap.
Therefore, since the outer surface of the fuel cell module is covered with the heat insulator, it is possible to suppress the heat diffusion of the fuel cell module generated by the power generation to the outside of the fuel cell module (fuel cell). . Thereby, the temperature of the fuel cell module can be maintained at a high temperature, and the power generation efficiency can be improved.

In the fuel cell of the present invention, it is preferable that the heat insulation main body is divided into two through the opening.

In such a fuel cell, since the heat insulation main body is divided into two through the opening, for example, after fixing the fuel cell module on the lid-like member, the heat insulation main body divided into two By fitting each of them from the side surface side of the fuel cell module, the outer surface of the fuel cell module can be covered with a heat insulator and stored.

  Thereby, for example, even if the shape of the outer surface of the fuel cell module is complicated, the outer surface of the fuel cell module is covered with the heat insulator and stored by sliding the heat insulating body divided from the side surface side of the fuel cell module. be able to.

  Therefore, unlike the prior art, there is no need to press and connect a plurality of heat insulating materials to the outer surface of the fuel cell module, and the assembly of the fuel cell module and the heat insulator becomes very easy.

  Further, in the fuel cell of the present invention, the heat insulating main body and the lid-like member are provided with a concave portion and a convex portion, and the heat insulating main body and the lid-like member are connected by fitting them together. Is preferred.

  In such a fuel cell, a heat insulating body is easily formed, held and fixed by providing a concave portion and a convex portion on the heat insulating main body and the lid-like member and fitting them together to connect the heat insulating main body and the lid-like member. can do.

The fuel cell of the present invention, between the front Symbol insulation body and the fuel cell module, it is preferable that the flocculent insulation material is provided.

  In such a fuel cell, a heat insulator is formed by two kinds of heat insulating materials.

And since the heat insulating body is provided with the cotton-like heat insulating material on the inner surface of the heat insulating main body , the cotton-like heat insulating material can be flexibly changed in accordance with the shape of the fuel cell module. Thereby, the fuel cell module can be covered with a heat insulator without any gap.

  Therefore, since the outer surface of the fuel cell module is covered with the heat insulator, it is possible to suppress the heat diffusion of the fuel cell module generated by the power generation to the outside of the fuel cell module (fuel cell). . Thereby, the temperature of the fuel cell module can be maintained at a high temperature, and the power generation efficiency can be improved.

The fuel cell of the present invention includes a fuel cell module in which fuel cells are stored in a storage container, and a heat insulating body that covers the outer surface of the fuel cell module, and the heat insulating body is a box that is open on one side. A heat-insulating main body and a lid-like member that closes an opening of the heat-insulating main body, and the heat-insulating main body is composed of one or two members, and the lid-like one of the outer surfaces of the fuel cell module. A frame in which all the outer surfaces other than the outer surface covered with the members are covered, the heat insulating main body is divided into two via the opening , and each member of the heat insulating main body is provided on the outer surface is fixed by Jo fixing member, the frame-shaped fixing member is disposed in a horizontal direction, and wherein the recess on the upper surface thereof is formed.

In such a fuel cell, the respective members to each other in the adiabatic body, by fixing by the frame-shaped fixing member, it is possible to more firmly fix the heat-insulating body.

  Accordingly, the heat insulator can cover and store the fuel cell module, and a gap can be prevented from being generated on the mating surface of the heat insulator. Air outside the fuel cell is convected and the temperature of the fuel cell module is increased. It can prevent effectively that it falls.

  In addition, a part of the heat insulator covering the fuel cell module may be scraped and fall as a powder due to vibrations during transportation or earthquake. And, for example, in the case where the outer surface (the surface not in contact with the fuel cell module) of the heat insulator covering the fuel cell module is scraped, an auxiliary device such as a pump for sending the air to the fuel cell by the scraped heat insulator If it enters, there is a risk that an auxiliary device or the like may break down, and accordingly, the fuel cell may break down.

  In the present invention, since the concave portion is formed on the upper surface of the frame-shaped fixing member provided on the outer surface of the heat insulating main body, the outer surface of the heat insulating material that covers the fuel cell module due to vibration during transportation of the fuel cell or an earthquake. Even if a portion of the heat sink is cut, the cut heat insulator is accumulated in the recess, and the heat insulator can be prevented from entering the auxiliary device or the like.

  Therefore, even when a part of the outer surface of the heat insulator covering the fuel cell module is scraped off, it is possible to prevent the fuel cell from being damaged by the shaved heat insulator.

The fuel cell of the present invention is a fuel cell module in which a fuel cell is stored in a storage container. The fuel cell module is formed of a box-shaped heat insulating main body with one surface opened and a lid-shaped member that closes the opening. Consists of one or two members, covers and stores all outer surfaces of the fuel cell module other than the outer surface covered with the lid-like member, and between the heat insulator and the fuel cell module, Since the heat insulating material is provided , the assembly of the fuel cell module and the heat insulating body can be made very easy. In addition, since a cotton-like heat insulating material is provided on the inner surface of the heat insulating body, the cotton-like heat insulating material can be flexibly changed in accordance with the shape of the fuel cell module.
Thus, since the fuel cell module is covered with a heat insulator without a gap , the temperature of the fuel cell module can be maintained at a high temperature, and high power generation efficiency can be maintained.
Further, in the fuel cell of the present invention, the heat insulating main body is divided into two via the opening, and each member of the heat insulating main body is fixed by a frame-shaped fixing member provided on the outer surface thereof, Since the frame-shaped fixing member is arranged in the horizontal direction and has a recess formed on the upper surface thereof, the frame-shaped fixing member is fitted into the outer surface of the heat insulating body constituting the heat insulator, for example, divided into a plurality of parts. The heat insulation body can be more firmly fixed, and even if a part of the outer surface of the heat insulating material covering the fuel cell module is scraped off during transportation of the fuel cell or due to vibration such as an earthquake, the shaved heat insulating body Will accumulate in the recess, and the heat insulator can be prevented from entering the interior of the auxiliary device or the like.

1 and 2 is an exploded perspective view of a fuel cell 1, the fuel cell module 2, box-like heat-insulating body one surface constituting the thermal insulator 3 is opened 4 and the opening of the insulation body 4 The lid-like member 5 is closed. The fuel cell module 2 is shown with a part of the side removed, and the fuel cell is omitted. The same members are assigned the same numbers, and so on.

  Here, the box-shaped heat insulation main body 4 may be integrally formed so as to have a storage space for storing the fuel cell module 2, or may be formed by hollowing out a part of a rectangular parallelepiped. In addition, since the heat insulation main body 4 is box-shaped, the heat insulating body 3 comprised by connecting the lid-shaped member 5 also becomes a box shape.

  In such a fuel cell 1, the fuel cell module 2 is covered and stored with the heat insulating body 4, and then the lid member 5 is connected, whereby the heat insulator 3 covers and stores the outer surface of the fuel cell module 2. be able to.

In this embodiment , it is preferable to store the outer surface of the fuel cell module 2 in close contact with the inner wall of the heat insulator 3. In this case, the fuel cell module 2 and the heat insulator 3 are in close contact with each other without a gap.

  Therefore, since the outer surface of the fuel cell module 2 is covered with the heat insulator 3 and accommodated inside, the heat of the fuel cell module 2 is prevented from being diffused to the outside of the fuel cell module 2 (fuel cell 1). be able to. Therefore, the temperature drop of the fuel cell module 2 can be suppressed, the temperature of the fuel cell module 2 can be maintained at a high temperature, and the power generation efficiency of the fuel cell 1 can be improved.

  And the heat insulation body 3 is formed from the box-shaped heat insulation main body 4 and the lid-like member 5, so that a plurality of heat insulation materials (plate-like heat insulation materials, etc.) are externally attached to the fuel cell module 2 as in the conventional art. Therefore, the fuel cell module 2 and the heat insulator 3 can be easily assembled.

  In addition, by making the shape of the heat insulating body (heat insulating body) into a box shape, the mating surface of the heat insulating body 3 is only the connection surface between the heat insulating main body 4 and the lid-like member 5. Therefore, since the mating surface of the heat insulator 3 is reduced, it is possible to effectively suppress a decrease in the temperature of the fuel cell module 2 due to convection of air outside the fuel cell module 2 (fuel cell 1). .

  FIG. 2 shows that after the fuel cell module 2 is placed on the lid-like member 5 and fixed, the heat insulating body 4 is put on the fuel cell module 2 so that the heat insulator 3 covers the outer surface of the fuel cell module 2. The example which accommodates the battery module 2 is shown.

  In the fuel cell 1 having this shape, the above-described effects can be obtained. Therefore, when the fuel cell 1 is manufactured, the fuel cell module 2 is housed in the heat insulating body 4 and then the lid-like member 5 is connected or the lid-like member is connected. Whether the heat insulation main body 4 is covered and the heat insulation main body 4 and the lid-like member 5 are connected after the fuel cell module 2 is placed on the member 5 can be appropriately selected depending on the manufacturing conditions of the fuel cell 1 and the like. .

Note that the cross-sectional heated material, as long as a member having a heat insulating effect, members can be used commonly known, for example, insulation, heat board used in building materials, rock wool, A refractory material or the like can be used. In addition, it is preferable to use a heat insulating material and a heat-resistant board in terms of the heat insulating effect and shape retention. The heat-resistant board may be any generally known heat-resistant board and may have heat resistance that can withstand the temperature of the fuel cell module.

  FIG. 3 shows an example in which the heat insulating main body 7 is divided into a plurality of openings, and in this embodiment, the heat insulating main body 7 is divided into two. Then, after the fuel cell module 2 is placed and fixed on the lid-like member 5, the heat insulating body 7 divided into two parts is overlapped (fitted) from the side surface side of the fuel cell module 2, thereby The outer surface can be covered with the heat insulator 3 and stored.

  Thereby, even if the shape of the outer surface of the fuel cell module 2 is complicated, the outer surface of the fuel cell module 2 is slid by sliding each of the heat insulating bodies 7 divided from the side surface side of the fuel cell module 2. Can be covered.

  FIG. 3 shows a case where the heat-insulating main body 7 divided into two is fitted from the left and right sides of the fuel cell module 2 that is fixed on the lid-like member 5. Here, the heat insulating body 7 divided into two covers the fuel cell module 2 by sliding on the lid-like member 5.

  Therefore, the outer surface of the fuel cell module 2 can be easily covered and the assembly of the heat insulator becomes very easy.

  In this case, the heat insulation main body 7 may be divided into two parts, and the heat insulation main bodies 7 divided into two parts may have the same size or different sizes according to the shape of the fuel cell module 2.

4, the fuel cell module 2 is a cross-sectional view of the fuel cell 6 shown a covered state by the lid-like member 5 and the heat insulating body 7, is connected to the lid member 5 and the heat insulating body 7 is fitted ing.

  Here, when fitting and connecting the lid-like member 5 and the heat insulating main body 7, the convex portion 9 and the concave portion 10 are provided on the lid-like member 5 and the heat insulating main body 7, and they are connected by fitting them together. Can do. In addition, the shape of this convex part 9 and the recessed part 10 can be suitably designed, such as rod shape and square column shape.

  In FIG. 4, after the fuel cell module 2 is placed and fixed on the lid-like member 5, a heat insulating body 7 is placed thereon, and the fuel cell module 2 is covered with the heat insulating body 3 and stored. In this example, a convex portion 9 having a trapezoidal cross section is provided on the lid-like member 5 so as to surround the fuel cell module 2, and a concave portion 10 to be fitted to the convex portion 9 is provided on the heat insulating body 7. And the heat insulation main body 7 and the lid-shaped member 5 can be firmly connected by fitting the convex part 9 and the recessed part 10 together. Moreover, the heat insulator 3 can be easily formed and held and fixed simply by fitting the convex portion 9 and the concave portion 10 together.

  Although not shown in the drawing, in the heat insulator of the present invention, the heat insulating body is connected to the heat insulating body in a box shape for the purpose of covering and storing the outer surface of the fuel cell module with the heat insulator. It is also possible to use a shape in which a cotton-like heat insulating material is provided on the inner surface. That is, a heat insulator is formed by two types of heat insulating materials, a plate-shaped heat insulating material and a cotton-like heat insulating material.

  In the present invention, the plate-shaped heat insulating material is a plate-shaped heat insulating material whose outer shape is plate-shaped (called a board) and has a low flexibility property, and is also a cotton-shaped heat insulating material. The outer shape is cotton-like (also called a blanket), and the one having a high flexibility (cushioning property) is called cotton-like.

  Here, since the outer shape of the heat insulating main body is formed of a plate-shaped heat insulating material, the shape (box shape) of the heat insulating body is easily formed and held. Furthermore, since the cotton-like heat insulating material provided on the inner surface of the heat insulator has a characteristic of high flexibility (cushioning property), it changes flexibly according to the shape of the fuel cell module, and the outer surface of the fuel cell module Can be covered without gaps. Thereby, the fuel cell module can be stored in close contact with the heat insulating material.

  Therefore, since the outer surface of the fuel cell module is covered with the heat insulator, the heat of the fuel cell module generated by power generation can be prevented from being diffused outside the fuel cell module (fuel cell). . Thereby, the temperature of the fuel cell module can be maintained at a high temperature, and the power generation efficiency can be improved.

  Also, a cotton-like heat insulating material is attached to the inside of a heat insulating body formed by connecting plate-like heat insulating materials in a box shape, that is, a cotton-like heat insulating material is provided between the heat insulating body and the fuel cell module. In addition, for example, the outer surface of the fuel cell module can be brought into close contact with the cotton-like heat insulating material, and the outer surface of the cotton-like heat insulating material can be covered with a heat insulator formed of a plate-like heat insulating material.

  FIG. 5 is a view showing an example of the above case, in which the entire outer surface of the fuel cell module 2 is brought into close contact with the cotton-like heat insulating material 12 and the outer surface of the cotton-like heat insulating material 12 is plate-like heat-insulated. The example of the fuel cell 11 covered with the heat insulation main body 4 and the lid-shaped member 5 which were formed with the material is shown.

  In this case, the outer surface of the fuel cell module 2 is brought into close contact with the cotton-like heat insulating material 12 and then covered with the heat insulating body 3 formed of a plate-like heat insulating material. Here, when covering the fuel cell module 2 with the cotton-like heat insulating material 12, for example, according to the shape of the fuel cell module 2, the cotton-like heat insulating material 12 is produced in a developed shape and folded. The outer surface of the fuel cell module 2 can be covered (contacted) with the cotton-like heat insulating material 12.

  Therefore, since the outer surface of the fuel cell module 2 is covered with the heat insulator 3, the heat of the fuel cell module 2 generated by the power generation of the fuel cell 11 is outside the fuel cell module 2 (fuel cell 11). Thermal diffusion can be suppressed. Thereby, the temperature of the fuel cell module 2 can be maintained at a high temperature, and the power generation efficiency of the fuel cell 11 can be improved.

  In this case, the cotton-like heat insulating material 12 is located under the gap between the mating surfaces of the heat insulating body 3 (the heat insulating main body 4 and the lid-like member 5 or the heat insulating main body 7 divided into two). Therefore, heat diffusion of the fuel cell module 2 from the mating surface of the heat insulator 3 to the outside of the fuel cell module 2 (fuel cell 11) can be suppressed. Thereby, the temperature of the fuel cell module 2 can be maintained at a high temperature, and the power generation efficiency of the fuel cell 11 can be improved.

  Furthermore, since the cotton-like heat insulating material 12 is located under the gap between the mating surfaces of the heat insulator 3, for example, exhaust gas generated by power generation of the fuel cell module 2 leaks from the gap of the fuel cell module 2. Even in this case, since the leakage is suppressed by the cotton-like heat insulating material 12 and the mating surfaces of the cotton-like heat insulating material 12 and the box-shaped heat insulating material 3 are not in contact with each other, the box-shaped heat insulating material 3 This prevents leakage. Therefore, it is possible to effectively prevent the exhaust gas and the like from leaking outside the fuel cell 11.

  In the case where the heat insulating main body is divided into two, for example, when the heat insulating main body 7 has the same size and the cotton-like heat insulating material 12 covers the fuel cell module 2 in the developed shape shown in FIG. Since the cotton-like heat insulating material 12 is positioned under the mating surface of the divided heat insulating main body 7, the above-described effects can be obtained.

  By the way, the heat insulator 3 covering the fuel cell module 2 may be partly shaved and fall as a powder due to vibration during transportation or earthquake.

  When a part of the outer surface of the heat insulator 3 (the surface not in contact with the fuel cell module 2) was scraped, the scraped heat insulator (heat insulator) spilled into the storage container constituting the fuel cell 1. In such a case, there is a risk of entering an auxiliary device such as a pump installed below the fuel cell module 2 in the storage container. In this case, if the scraped heat insulator enters the auxiliary device or the like, the auxiliary device or the like may break down, and thus the fuel cell 1 may break down.

  Therefore, when the heat insulator 3 covering the fuel cell module 2 is scraped off part of the heat insulator 3 (the outer surface of the heat insulator 3) due to vibration during transportation or earthquake, the scraped heat insulator is It is preferable to take measures to prevent entry into an auxiliary device or the like.

  FIG. 6 shows that the heat insulating main body divided into a plurality is fixed with a frame-shaped fixing member fitted on the outer surface thereof, and a concave portion is formed on the upper surface of the frame-shaped fixing member arranged in the horizontal direction. It is the schematic diagram which showed the example formed. 6 shows a fuel cell 13 in which a heat insulating body 7 divided into two parts is overlapped from the side surface of the fuel cell module 2 and fixed by a frame-shaped fixing member 14 arranged in the horizontal direction. 7 shows an exaggerated cross-sectional view.

  Here, the heat insulation main body 7 divided into two parts is fixed by providing a frame-shaped fixing member 14 around the heat insulation main body 7 divided into two parts (horizontal direction). Thereby, each of the heat insulation main body 7 divided into two is firmly connected. Therefore, it is possible to effectively suppress a decrease in the temperature of the fuel cell module 2 due to convection of air outside the fuel cell 13 from the gap between the mating surfaces of the heat insulating body 7.

  Further, the frame-shaped fixing member 14 arranged in the horizontal direction preferably has a recess formed on the upper surface of the fixing member 14 as shown in FIGS. 6 and 7. In this case, even if a part of the outer surface of the heat insulator 3 covering the fuel cell module 2 is shaved due to the vibration of the fuel cell 13 during transportation or due to an earthquake or the like, the powder of the shaved heat insulator 3 (heat insulator) is removed. Will be accumulated in the recess, and the heat insulating material can be prevented from entering the auxiliary device or the like. Therefore, it is possible to prevent the auxiliary device or the like from being damaged by the shaved heat insulating material, and further the failure of the fuel cell 13 due to the influence thereof.

  In FIG. 7, the concave portion of the frame-shaped fixing member 14 shows a shape that opens to the outside of the heat insulating main body 7. It is good also as a type.

  Although the present invention has been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made without departing from the paper of the present invention.

  For example, when a pipe for supplying fuel gas or the like supplied to the fuel cell module is inserted through the heat insulating body, it is inserted from the lower side of the heat insulating body and connected to the fuel cell module through the inside of the heat insulating body. It can also be. In this case, the fuel cell that houses the fuel cell module can be prevented from increasing in size in the lateral direction due to piping or the like, and the fuel cell 1 can also be prevented from increasing in size.

  In addition, the heat insulator 3 covering the fuel cell module 2 may be scraped on the inner surface (the surface in contact with the fuel cell module 2) of the heat insulator 3 due to vibration during transportation or earthquake. In that case, a part of the heat insulating material is accumulated between the outer surface of the fuel cell module 2 and the inner surface of the heat insulating body 3 in the cut heat insulating body (heat insulating material). And when a part of heat insulating material collected between the outer surface of the fuel cell module 2 and the inner side of the heat insulator 3, a gap is generated between the fuel cell module 2 and the inner surface of the heat insulator 3, Air outside the fuel cell 1 may convect and the temperature of the fuel cell module 2 may decrease.

  Also, assuming that the inner surface of the heat insulator (the surface on the side in contact with the fuel cell module) can be scraped, a recess is formed in the lid-like member so that the scraped heat insulator can be discharged to the outside of the heat insulator, and the recess In addition, the fuel cell module may be fitted to each other, and a through hole may be provided in the concave portion so that the scraped heat insulator is discharged from the through hole. At that time, in order to discharge the shaved heat insulator more effectively, a part of the lid-like member or the heat insulation main body may be an inclined surface.

It accommodates the fuel cell module in the heat insulating main body, showing a state for connecting the lid-like member is an exploded perspective view of a fuel cell. The fuel cell module is fixed to the lid-like member, illustrating a state for connecting the insulation body is an exploded perspective view of a fuel cell. The fuel cell module is fixed to the lid-like member, illustrating a state for connecting the bisected insulation body from the side surface of the fuel cell module is an exploded perspective view of a fuel cell. Shows the state in which fitting the insulation body and the lid-like member, a cross-sectional view of a fuel cell. It is a disassembled perspective view of the fuel cell of this invention which shows the state which coat | covers a fuel cell module with a cotton-like heat insulating material, and connects a heat insulation main body and a lid-shaped member. It is a perspective view of the fuel cell of this invention which shows the state which fixes the heat insulation main body divided into 2 with the frame-shaped member which has a recessed part. It is sectional drawing of the fuel cell of this invention shown in FIG. It is a disassembled perspective view which shows the conventional fuel cell.

Explanation of symbols

1, 6, 11, 13, 15: Fuel cell 2: Fuel cell module 3, 8, 20: Thermal insulator
4, 7, 16: heat insulating body 5, 17: lid-like member 9: convex portion 10: concave portion 12: cotton-like heat insulating material 14: fixing member

Claims (4)

A fuel cell module in which a fuel cell is stored in a storage container; and a heat insulating body that covers an outer surface of the fuel cell module. The heat insulating body is composed of one or two members, and all of the outer surfaces of the fuel cell module other than the outer surface covered with the lid member are configured by closing the opening. A fuel cell characterized in that a cotton-like heat insulating material is provided between the heat insulator and the fuel cell module while covering an outer surface.   The fuel cell according to claim 1, wherein the heat insulating main body is divided into two through the opening.   The recessed part and the convex part are provided in the heat insulation main body and the lid-like member, and the heat insulation main body and the lid-like member are connected by fitting them together. The fuel cell according to claim 2. A fuel cell module in which a fuel cell is stored in a storage container; and a heat insulating body that covers an outer surface of the fuel cell module. The heat insulating body is composed of one or two members, and all of the outer surfaces of the fuel cell module other than the outer surface covered with the lid member are configured by closing the opening. While covering the outer surface, the heat insulation main body is divided into two through the opening , each member of the heat insulation main body is fixed by a frame-shaped fixing member provided on the outer surface , A fuel cell, wherein the frame-shaped fixing member is disposed in a horizontal direction, and a recess is formed on an upper surface thereof.

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