JP5219393B2 - Fuel cell module and fuel cell device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell module capable of facilitating temperature control and to provide a fuel cell device formed by housing the fuel cell module. <P>SOLUTION: A cell stack 4 of a fuel cell formed by arranging two or more unit cells 3 of a fuel cell in a manifold 7 and electrically connecting in series is housed in a housing case 2, the housing case 2 has double structure of an inner wall 9 and an outer wall 10, a space between the inner wall 9 and the outer wall 10 is used as a passage of reaction gas supplied to the unit cells 3 of the fuel cell, a reaction gas introduction member 13 for introducing reaction gas from the side surface along the arranging direction of the cell stack 4 to the cell stack 4, communicating with the passage, and corresponding to the width in the arranging direction of the cell stack 4 is installed in the inner wall 9. Since a temperature sensor 15 is arranged so that a temperature measuring part 16 of the temperature sensor 15 is positioned on the inside of the reaction gas introduction member 13, leak of exhaust gas in the fuel cell module 1 can be suppressed and the temperature control of the fuel cell module 1 can be efficiently conducted. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a fuel cell module in which a fuel cell stack is housed in a housing case and a temperature sensor is disposed, and a fuel cell device in which the fuel cell module is housed.

  In recent years, as a next-generation energy, a fuel cell module comprising a fuel cell stack in which a plurality of fuel cells that can obtain electric power using hydrogen gas and air (oxygen-containing gas) are electrically connected in series. Various proposals have been made.

As such a fuel cell module, for example, a plurality of fuel cell cells that generate power are arranged in parallel, and a fuel cell stack that is electrically connected in series is accommodated in the power generation chamber, and a rectangular parallelepiped shape that encloses the power generation chamber. A fuel cell module including a storage case has been proposed (see, for example, Patent Document 1).
International Publication No. 2007/013328 Pamphlet

  By the way, the operation of the fuel cell (cell) is performed within a predetermined temperature range, and if the temperature of the fuel cell (stack) rises excessively, the fuel cell may be damaged due to deterioration or thermal stress. In addition, it is necessary to measure the temperature of the fuel cell (in the fuel cell module) and manage the temperature. At that time, it is preferable to measure the temperature near the fuel cell.

  Here, in measuring the temperature in the fuel cell module, when a temperature sensor or the like is disposed in the vicinity of the fuel cell, it is considered that the temperature sensor is inserted in the vicinity of the fuel cell from the outside of the storage case. However, in that case, there has been a problem that exhaust gas and the like may leak from the gap between the temperature sensor and the insertion portion (hole) of the temperature sensor.

  Further, when the temperature sensor is arranged in the vicinity of the fuel cell, the temperature sensor and the fuel cell come into contact with each other during transportation of the fuel cell module, and the temperature sensor and the fuel cell may be damaged.

  In addition, when the temperature sensor is disposed close to the fuel cell, it is conceivable that the temperature sensor is inserted into an insulating tube or the like to suppress (prevent) a short circuit between the temperature sensor and the fuel cell. In that case, there is also a problem that the cost of the insulating tube is high.

  Therefore, the present invention provides a fuel cell module capable of suppressing exhaust gas and the like from leaking from the fuel cell module and controlling damage and short-circuiting of the fuel cell when performing temperature management in the fuel cell module. The purpose is to provide.

The fuel cell module of the present invention is a double-walled storage case having an inner wall and an outer wall.
The power generation chamber to be encapsulated by the inner wall, the fuel cell stack formed by connecting a plurality of fuel cells electrically in series and arranged in a line having a fuel gas flow passage therein, the fuel in the fuel cell A fuel cell stack device having a configuration mounted on the upper surface of a manifold for supplying gas is housed, and a flow path of oxygen-containing gas introduced into the fuel cell is formed between the inner wall and the outer wall. together, the inner wall, connected with between the inner wall and the outer wall, said fuel cell cell corresponds to the width in the arrangement direction of the Le, before Symbol fuel cell cell Le said fuel cell from the side surface side along the arrangement direction of the by way of introducing the oxygen-containing gas to the stack, the reaction gas introduction member the lower end portion is formed by joining the bottom members of the pair of plate members is connected, a temperature sensor, measuring the temperature sensor As the part is located inside the reaction-gas introducing member and through said outer wall, and characterized by being arranged so as not to pass through the inner wall.

In such a fuel cell module, a housing case for housing the fuel cell stack and a double wall structure between the inner and outer walls, corresponding to the width in the arrangement direction of the fuel cell cell Le to the inner wall, of the fuel cell cell Le A reaction gas introduction member for introducing an oxygen-containing gas into the fuel cell stack from the side surface along the arrangement direction is provided, and the temperature sensor passes through the outer wall so that the temperature measurement part of the temperature sensor is located inside the reaction gas introduction member. In addition, since the temperature sensor is arranged so as not to penetrate the inner wall, it is not necessary to provide a hole penetrating the inner wall and the outer wall in the storage case when arranging the temperature sensor. Therefore, it is possible to suppress leakage of exhaust gas and the like in the fuel cell module, and it is possible to suppress the temperature in the fuel cell module from decreasing.

  Further, since the temperature sensor is arranged inside the reaction gas introduction member, for example, it is possible to suppress a short circuit between the temperature sensor and the fuel cell. Furthermore, it is possible to prevent the temperature sensor and the fuel cell from coming into contact with each other during transportation of the fuel cell module, and the fuel cell from being damaged.

Further housing, from the side surface along the arrangement direction of the fuel cell cell Le, from placing the temperature sensor in the interior of the reaction gas introduction member for introducing oxygen-containing gas to the fuel cell stack, in the fuel cell module It is possible to effectively measure the temperature in the vicinity of the fuel cell stack. Therefore, the temperature management of the fuel cell module can be performed efficiently.

  In the fuel cell module of the present invention, it is preferable that the temperature measuring part of the temperature sensor is arranged on the side of the wall of the reaction gas introduction member facing the fuel cell stack.

  In such a fuel cell module, the temperature sensor of the temperature sensor is disposed on the side of the wall of the reaction gas introduction member facing the fuel cell stack, so that the temperature sensor of the temperature sensor is disposed on the fuel cell stack. Can be placed close to. Thereby, the temperature in the vicinity of the fuel cell stack can be measured more effectively.

  Further, the fuel cell module of the present invention is arranged such that the temperature measuring part of the temperature sensor is located at the center of the height of the fuel cell and the center of the width in the arrangement direction of the fuel cell. It is preferable.

  The highest temperature in such a fuel cell stack is the fuel cell located in the center of the width in the arrangement direction of the fuel cells constituting the fuel cell stack, and at the height of the fuel cell. It becomes the central part.

Therefore, the temperature measuring unit of the temperature sensor, at the central portion in the height of the fuel cell, and by arranging so as to be positioned at the center portion of the width in the arrangement direction of the fuel cell, in the fuel cell module High The temperature in the vicinity of the portion that becomes the temperature can be measured, whereby the temperature management of the fuel cell module can be performed efficiently.

  Moreover, it is preferable that the fuel cell module of this invention has an opening part in the vicinity of the temperature measurement part of the said temperature sensor of the wall of the said reaction gas introduction member facing the said fuel cell stack.

  In such a fuel cell module, since there is an opening in the vicinity of the temperature sensor of the temperature sensor on the wall of the reaction gas introduction member facing the fuel cell stack, the temperature of the fuel cell stack is controlled through the opening. It can be measured more directly. Therefore, the temperature management of the fuel cell module can be performed efficiently.

  A fuel cell device according to the present invention is characterized in that any one of the above fuel cell modules is housed.

  In such a fuel cell device, since the fuel cell module capable of appropriately performing temperature management is housed, auxiliary equipment for operating the fuel cell module can be appropriately operated, It can be set as the fuel cell apparatus which can improve power generation efficiency.

In the fuel cell module of the present invention, the storage case has a double structure of an inner wall and an outer wall, and the temperature sensor of the temperature sensor is located inside the reaction gas introduction member connected to the inner wall and connected between the inner wall and the outer wall. By disposing the temperature sensor so as to penetrate the outer wall and not through the inner wall, it is possible to suppress leakage of exhaust gas in the fuel cell module, and the temperature sensor and the fuel cell stack are Since contact and short-circuiting can be suppressed and the temperature in the vicinity of the fuel cell stack can be measured, the temperature management of the fuel cell module can be performed efficiently. Moreover, the fuel cell device of the present invention can improve the power generation efficiency by housing the fuel cell module of the present invention.

FIG. 1 is an external perspective view showing an example of the fuel cell module of the present invention. The fuel cell module 1 accommodates a fuel cell stack 4 in which a plurality of fuel cells 3 are arranged in parallel and electrically connected in series inside a rectangular parallelepiped storage case 2. In Figure 1, the fuel cell 3, the interior of the fuel cell 3 is the fuel gas in the longitudinal direction is illustrated a hollow flat plate-shaped fuel cells 3 that flows. Further, in order to obtain a fuel gas used in the fuel cell 3, are arranged reformer 6 for reforming raw fuel such as natural gas and kerosene on top of the fuel cell stack 4. Further, the fuel cell stack 4 is mounted on the upper surface of a manifold 7 for supplying the reformed fuel (reformed gas) to the fuel cell 3, and the reformed gas generated by the reformer 6 is supplied to the fuel cell stack 4. The fuel cell 3 is supplied through the manifold 7. And the fuel cell stack apparatus 8 is comprised by these structures.

  FIG. 1 shows a state in which a part (front surface) of the storage case 2 is removed and the fuel cell stack device 8 accommodated therein is taken out forward. Here, in the fuel cell module 1 shown in FIG. 1, the fuel cell stack device 8 can be slid and stored in the storage case 2.

  FIG. 2 is an X sectional view of the fuel cell module shown in FIG. 1 and shows an example of the fuel cell module 11 in which the temperature sensor 15 is arranged.

  The storage case 2 constituting the fuel cell module 11 has a double wall structure having an inner wall 9 and an outer wall 10, and an outer frame of the storage case 2 is formed by the outer wall 10, and the fuel cell stack 4 (fuel A power generation chamber 5 for accommodating the battery cell stack device 8) is formed.

Furthermore in the fuel cell module 11, between the inner wall 9 and the outer wall 10, and a flow path of the reaction gas introduced into the fuel cell 3, for example, flows oxygen-containing gas you introduced into the fuel cell 3.

Here, the inner wall 9 corresponds to the width in the arrangement direction of the fuel cells 3 and communicates with the flow path formed by the inner wall 9 and the outer wall 10 from the side surface along the arrangement direction of the fuel cells 3. A reaction gas introduction member 13 for introducing an oxygen-containing gas into the battery cell stack 4 is provided. Further, on the lower end side of the reaction gas introduction member 13 (lower end side of the fuel cell 3), the fuel cell 3
An air outlet 14 for introducing an oxygen-containing gas is provided. In FIG. 2, the reaction gas introduction member 13 has a shape that hangs down from the upper surface side of the storage case 2 to the power generation chamber 5, and the reaction gas introduction member is a pair of plates arranged in parallel at a predetermined interval. The reaction gas introduction flow path is formed by the member, and is formed by joining the bottom member on the lower end side. The temperature sensor 15 is inserted into the reaction gas introduction member 13 from the upper surface side of the storage case 2 so that the temperature measuring unit 16 of the temperature sensor 15 is located.

  Here, since the fuel cell 3 is operated in a predetermined temperature range, it is necessary to measure the temperature in the power generation chamber 5 (preferably in the vicinity of the fuel cell stack 4) and to manage the temperature. In particular, in the case where the fuel cell 3 is a solid oxide fuel cell, its operating temperature is very high, and if the fuel cell 3 (fuel cell stack 4) rises excessively, the fuel cell will deteriorate due to deterioration and thermal stress. Since the cell 3 may be damaged or the like, it is particularly necessary to effectively measure the temperature in the vicinity of the fuel cell stack 4 and manage the temperature.

  Here, when the temperature sensor 15 is inserted so as to penetrate the inner wall 9 and the outer wall 10 constituting the storage case 2, the temperature sensor insertion portion (hole) provided in the storage case 2 and the temperature sensor 15 There is a risk that exhaust gas, fuel gas, or the like leaks out of the storage case 2 from the gap.

  Further, when the temperature sensor 15 is arranged in the vicinity of the fuel cell 3 (for example, when the temperature sensor 15 is inserted from the front and rear surfaces of the storage case 2 and arranged along the arrangement direction of the fuel cell 3). The temperature sensor 15 and the fuel cell 3 may come into contact with each other due to vibration during transportation of the fuel cell module 11, and the temperature sensor 15 and the fuel cell 3 may be damaged. Furthermore, when the fuel cell module 11 is in operation, the temperature sensor 15 and the fuel cell 3 may be short-circuited and the fuel cell 3 may be damaged.

Therefore, in the present invention, the inner wall 9 constituting the storage case 2 is provided with the reaction gas introduction member 13 for introducing the oxygen-containing gas into the fuel cell 3, and the temperature measuring unit 16 of the temperature sensor 15 is introduced into the reaction gas. It arrange | positions so that it may be located inside the member 13. FIG. That is, the temperature sensor 15 is disposed through only the outer wall 10 of the storage case. In FIG. 2, the reaction gas introduction member 13 is disposed between two juxtaposed fuel cell stacks 4.

Here, since the power generation chamber 5 is enclosed by the inner wall 9, leakage of exhaust gas, fuel gas, and the like in the power generation chamber 5 from the inner wall 9 is suppressed. Further, since the oxygen-containing gas supplied to the fuel cell 3 is blown out from the outlet 14 provided in the reaction gas introduction member 13, exhaust gas, fuel gas, and the like in the power generation chamber 5 are discharged from the outlet 14 from the reaction gas introduction member 13. Intrusion (backflow) is suppressed. Thereby, it is possible to suppress exhaust gas, fuel gas, and the like in the power generation chamber 5 from leaking out of the storage case 2 from the insertion hole 19 of the temperature sensor 15 provided in the outer wall 10.

  Further, since the temperature measuring unit 16 of the temperature sensor 15 is arranged inside the reaction gas introduction member 13, the temperature sensor 15 (temperature measuring unit 16) can be arranged in the vicinity of the fuel cell stack 4. Thereby, the temperature in the vicinity of the fuel cell stack 4 can be measured, and the temperature management in the fuel cell module 11 can be performed efficiently.

  In addition, since the temperature measuring unit 16 of the temperature sensor 15 is disposed inside the reaction gas introducing member 13, the temperature is expected to be lower than the vicinity of the actual fuel cell stack 4, so that the vicinity of the cell stack 4 in advance. And the correlation between the temperature measured by the temperature measuring unit 16 of the temperature sensor 15 disposed inside the reaction gas introducing member 13 and the temperature in the vicinity of the fuel cell stack 4 may be investigated. preferable.

  Further, by disposing the temperature sensor 15 inside the reaction gas introduction member 13, the temperature sensor 15 and the fuel cell 3 are in direct contact even when vibration or the like occurs during transportation of the fuel cell module 11. This prevents the temperature sensor 15 and the fuel cell 3 from being damaged. In addition, since the temperature sensor 15 and the fuel cell 3 are insulated and arranged, a short circuit between the temperature sensor 15 and the fuel cell 3 can be suppressed (prevented).

  Accordingly, for example, when a thermocouple is used as the temperature sensor 15, the thermocouple can be arranged in the fuel cell module 11 without being covered with an insulating tube or the like, and the cost of the fuel cell module 11 can be reduced.

Hereinafter, another configuration of the storage case 2 will be described with reference to FIG. In the storage case 2, a power generation chamber side inner wall 12 is further provided on the inner wall 9 on the power generation chamber 5 side. Here, the power generation chamber side inner wall 12 has a configuration in which the upper end side is opened, and the exhaust gas generated by the power generation of the fuel cell stack 4 flows through the space formed by the inner wall 9 and the power generation chamber side inner wall 12, The air is exhausted outside the storage case 2. Then, heat exchange is efficiently performed between the exhaust gas flowing through the space formed by the inner wall 9 and the power generation chamber side inner wall 12 and the oxygen-containing gas flowing through the flow path formed by the inner wall 9 and the outer wall 10 to introduce the reaction gas. In order to warm the oxygen-containing gas supplied from the member 13 to the fuel cell 3 and to perform heat exchange more efficiently, each of these spaces can be, for example, a meandering flow path, as shown in FIG. In the fuel cell module, an example in which a meandering flow path plate 19 is provided to make these spaces meandering flow paths is shown. Further, in the power generation chamber 5, a heat insulating material 17 can be appropriately provided between the fuel cell 3 and the power generation chamber side inner wall 12, between the manifold 7 and the outer wall 10, or the like.

  The storage case 2 can be manufactured by molding a metal plate or box. For example, the front and rear wall surfaces constituting the storage case 2 can be removed, so that the power generation chamber 5 of the storage case 2 can be made fuel. The battery cell stack device 8 and the heat insulating material 17 can be slid and inserted. Therefore, the fuel cell module 11 of the present invention can be a fuel cell module that can be easily assembled.

  FIG. 3 shows an example of a fuel cell module in which the temperature measuring unit 16 of the temperature sensor 15 is arranged on the side of the wall of the reaction gas introduction member 13 facing the fuel cell stack 4.

  In such a fuel cell module 21, the temperature sensor 15 is disposed on the side of the reaction gas introduction member 13 facing the fuel cell stack 4 (that is, disposed close to the fuel cell stack 4). Thus, the temperature in the vicinity of the fuel cell stack 4 (in the power generation chamber 5) can be measured more effectively. Thereby, the temperature management in the fuel cell module 11 can be performed efficiently.

  4 shows a fuel cell in which reaction gas introduction members 13 are arranged so that two fuel cell stacks 4 juxtaposed in the power generation chamber 5 are sandwiched from both side surfaces along the arrangement direction of the fuel cell stacks 4. The temperature sensor 15 is an example of a module, and is disposed on the side of each reaction gas introduction member 13 facing the fuel cell stack 4.

  Accordingly, the temperature in the power generation chamber 5 is measured by the temperature sensor 15 on both side surfaces along the arrangement direction of the two fuel cell stacks 4 juxtaposed in the power generation chamber 5. Can be measured more accurately. Further, by arranging the temperature sensors 15 according to the number of the fuel cell stacks 4, the temperature of the individual fuel cell stacks 4 can be measured, and the temperature abnormality of the individual fuel cell stacks 4 is detected. It is also possible.

  Further, for example, the temperature in the vicinity of the portion of the fuel cell stack 4 where the temperature is highest and the vicinity of the portion where the temperature is lowest are measured to detect the temperature range of the fuel cell stack 4 (in the power generation chamber 5) You can also. Such a part will be described later.

  When the reaction gas introduction members 13 are arranged so as to sandwich two fuel cell stacks 4 juxtaposed in the power generation chamber 5 from both side surfaces along the arrangement direction of the fuel cell stacks, the reaction gas introduction is performed. What is necessary is just to provide the blower outlet 14 provided in the member 13 in the fuel cell stack 4 side.

  Incidentally, although not shown in the drawing, for example, when one fuel cell stack 4 is arranged, the reaction gas is sandwiched between the fuel cell stacks 4 from both side surfaces along the arrangement direction of the fuel cell stacks 4. The introduction member 13 can also be arranged. Similarly in this case, the temperature range of the fuel cell stack 4 can be detected.

  By the way, the highest temperature portion in the fuel cell stack 4 is the central portion in the height of the fuel cells 3 constituting the fuel cell stack 4 and the central portion in the width in the arrangement direction of the fuel cells 3. . In addition, the center part in the height direction of the fuel battery cell 3 is a center part in the remaining height (length) excluding the part bonded to the manifold 7 of the fuel battery cell 3, and the following is agreed.

  Therefore, the temperature measuring unit 16 of the temperature sensor 15 is located at a position corresponding to the center portion of the fuel cell 3 constituting the fuel cell stack 4 and at the center portion in the width in the arrangement direction of the fuel cell 3. It is possible to measure the temperature in the vicinity of the portion of the fuel cell stack 4 where the temperature is highest, thereby efficiently managing the temperature in the fuel cell module. be able to.

  Incidentally, when detecting the temperature range of the fuel cell stack 4, it is preferable to measure also the portion of the fuel cell stack 4 where the temperature is the lowest. In this case, the fuel cell constituting the fuel cell stack 4 3 at the position corresponding to the manifold 7 side (the lower end side of the portion not bonded to the manifold 7 of the fuel cell 3) and the position corresponding to the end side in the width of the fuel cell 3 in the arrangement direction. It is preferable to arrange the temperature measuring unit 16 of the sensor 15.

  Note that the position corresponding to the central portion at the height of the fuel cell 3 is, for example, the temperature measuring portion 16 of the temperature sensor 15 in the X sectional view of FIG. It is arranged at the same position (height), and is appropriately determined depending on the shape of the fuel cell 3, the configuration of the fuel cell stack 4, and the like.

  For example, when the temperature measuring unit 16 of the temperature sensor 15 is arranged at a position corresponding to the central portion of the fuel cell 3 at the height, the storage case 2, the heat insulating material 17, the manifold 5, the fuel cell 3 The size (height and the like) of the reformer 7 and the like is set, and the distance from the upper surface of the storage case 2 at the center of the height of the fuel cell 3 is calculated. Then, the calculated distance is measured from the lower end portion inserted into the reaction gas introduction member 13 of the temperature sensor 15, and a mark or the like is attached to the temperature sensor 15. Then, when the temperature sensor 15 is inserted into the reaction gas introduction member 13 from the upper surface of the storage case 2 and inserted up to the mark portion, the temperature sensor 15 and the storage case 2 are fixed with screws or the like. Thereby, the temperature measurement part 16 of the temperature sensor 15 can be arrange | positioned in the position corresponding to the center part in the height of the fuel cell 3. FIG.

  In arranging the temperature measuring unit 16 of the temperature sensor 15 at a position corresponding to the central portion of the width in the arrangement direction of the fuel cells 3, the arrangement of the storage case 2, the heat insulating material 17, and the fuel cell stack 4 is arranged in advance. An insertion hole 19 for the temperature sensor 15 is provided in a portion of the storage case 2 located in the center of the fuel cell stack 4 in the width direction, and the temperature sensor 15 is inserted through the insertion hole 19. By inserting, the temperature measuring part 16 of the temperature sensor 15 can be arranged at a position corresponding to the central part in the width in the arrangement direction of the fuel cells 3.

  FIG. 5 shows the reaction gas introduction member 13 and the temperature sensor 15 extracted, and shows an example in which the temperature sensor 15 is inserted into the reaction gas introduction member 13 from the vertical direction. An opening 20 is provided in the vicinity of the temperature measuring unit 16 of the temperature sensor 15 on the wall of the member 13.

  Accordingly, the temperature measuring unit 16 can directly measure the temperature in the vicinity of the fuel cell stack 4 without using a member constituting the reaction gas introduction member 13. Therefore, since the temperature near the fuel cell stack 4 can be measured more accurately, the temperature management of the fuel cell module can be performed efficiently.

  Depending on the size of the fuel cell 3 and the size of the reaction gas introduction member 13, the opening 20 can be shared with the air outlet 14.

  Furthermore, by storing the fuel cell module of the present invention as described above to constitute the fuel cell device, it is possible to suppress leakage of exhaust gas and the like, and to easily perform temperature management of the fuel cell module. Since the auxiliary machines for operating the module can be appropriately operated, a fuel cell device with improved power generation efficiency can be obtained.

  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 scope of the present invention.

  For example, by disposing a plurality of temperature sensors 15 on the reaction gas introduction member 13, the temperature range of the fuel cell stack 4 can be detected even in a fuel cell module that houses only one fuel cell stack 4.

  In the above description, the hollow flat fuel cell 3 has been described. However, for example, a cylindrical or flat fuel cell 3 may be used. In this case, the fuel cell module of the present invention can be obtained by appropriately adjusting the structure of the reaction gas introduction member 13.

  Further, the example in which the reaction gas introduction member 13 is provided so as to hang down from the upper surface of the storage case 2 has been shown. It can also be made the shape which protrudes in the power generation chamber 5 from the inner wall which comprises 2 side surfaces.

It is an external appearance perspective view which shows an example of the fuel cell module of this invention. It is sectional drawing which has arrange | positioned the temperature sensor to the fuel cell module shown in FIG. It is sectional drawing which shows the other example of the fuel cell module of this invention which has arrange | positioned the temperature sensor to the side facing the fuel cell stack of the wall of a reaction gas introduction member. It is sectional drawing which shows another example of the fuel cell module of this invention which provided the reactive gas introduction member so that the fuel cell stack might be pinched | interposed from the side surface side along the arrangement direction of a fuel cell stack. It is the enlarged view which extracted and expanded a part of fuel cell module of this invention which shows the example which provided the opening part in the reaction gas introduction member.

Explanation of symbols

1, 11, 21, 31: Fuel cell module 2: Storage case 3: Fuel cell 4: Fuel cell stack 5: Power generation chamber 6: Reformer 7: Manifold 8: Fuel cell stack device 9: Inner wall 10: Outer wall 13: Reaction gas introduction member 14: Air outlet 15: Temperature sensor 16: Temperature measuring unit 20: Opening

Claims (5)

In a power generation chamber enclosed by the inner wall of a double-walled storage case having an inner wall and an outer wall, a plurality of fuel cells having fuel gas flow paths are arranged in a row and electrically connected in series. the fuel cell stack comprising Te, it houses a fuel cell stack apparatus having a structure mounted on the top surface of the manifold for supplying fuel gas to the fuel cell, between the inner wall and the outer wall with the flow path of the oxygen-containing gas introduced into the fuel cell, to the inner wall, connected with between the inner wall and the outer wall, corresponding to the width in the arrangement direction of the fuel cell cell Le, before Symbol fuel cell by way of introducing cell Le said oxygen-containing gas from the side surface side along the arrangement direction in the fuel cell stack, the reaction gas introduction member formed by joining the lower ends of the pair of plate members at the bottom member Is connected, the temperature sensor, so that the temperature measuring unit of the temperature sensor is located inside of the reaction-gas introducing member, and characterized in that through said outer wall, and arranged so as not to penetrate the inner wall Fuel cell module.   2. The fuel cell device according to claim 1, wherein the temperature sensor of the temperature sensor is disposed on a side of the wall of the reaction gas introduction member facing the fuel cell stack. 3.   2. The temperature measuring part of the temperature sensor is arranged so as to be positioned at a central part in the height of the fuel cell and in a central part of the width in the arrangement direction of the fuel battery cell. Alternatively, the fuel cell module according to claim 2.   The fuel according to any one of claims 1 to 3, further comprising an opening in the vicinity of the temperature measuring portion of the temperature sensor on the wall of the reaction gas introduction member facing the fuel cell stack. Battery module.   A fuel cell device comprising the fuel cell module according to any one of claims 1 to 4.

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