JP2022104497A - Fuel cell module and fuel cell device - Google Patents

Abstract

To improve the degree of freedom in design to avoid the interference between pipelines.SOLUTION: A fuel cell module 10 has a container 11, a fuel cell stack 13, and a plurality of pipelines 12. The container 11 accommodates a reformer 16 and a combustor 17. The fuel cell stack 13 laminates a plurality of fuel cells. The fuel cells generate power through an electrochemical reaction between a fuel gas generated by the reformer 16 and an oxidizing agent. The plurality of pipelines 12 send different types of gases between the container 11 and the fuel cell stack 13. Parts of the plurality of pipelines 12 are connected with a first surface of the container 11 and a first surface of the fuel cell stack 13. The other parts of the plurality of pipelines 12 are connected with at least one of a second surface of the container 11 and a second surface Scs2 of the fuel cell stack 13. The second surface of the container 11 is different from the first surface. The second surface Scs2 of the fuel cell stack 13 is different from the first surface.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to fuel cell modules and fuel cell devices.

A fuel cell module including a reformer, a combustor, and a fuel cell stack is known (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2020-119854

The fuel cell module is provided with a pipe for sending fuel gas from the reformer to the fuel cell stack, and a pipe for sending fuel off gas and oxidant off gas from the fuel cell stack to the reformer. It was difficult to connect these pipes to the fuel cell stack without interfering with each other.

Therefore, an object of the present disclosure made in view of the above-mentioned problems of the prior art is to provide a fuel cell module and a fuel cell device having an improved degree of freedom in design for avoiding interference between pipes. It is in.

In order to solve the above-mentioned problems, the fuel cell module from the first viewpoint is
A container that houses the reformer and the combustor that heats the reformer,
A fuel cell stack in which a plurality of fuel cell cells that generate electricity by the electrochemical reaction of the fuel gas generated by the reformer and the oxidant are laminated, and
A plurality of pipes, each of which sends different types of gas, are provided between the container and the fuel cell stack.
A part of the plurality of pipes is connected to the first surface of the container and the first surface of the fuel cell stack.
Another portion of the plurality of pipes is connected to at least one of a second surface different from the first surface of the container and a second surface different from the first surface of the fuel cell stack.

The fuel cell device from the second viewpoint is
A fuel in which a reformer and a container for accommodating a combustor for heating the reformer, a fuel gas generated by the reformer, and a plurality of fuel cell cells that generate power by an electrochemical reaction of an oxidizing agent are laminated. It has a battery cell stack and a plurality of pipes that send different types of gas between the container and the fuel cell stack, and a part of the plurality of pipes is a first surface of the container and a plurality of pipes. A second surface that is connected to the first surface of the fuel cell stack and has another portion of the plurality of pipes different from the first surface of the container, and a first surface of the fuel cell stack. It comprises a fuel cell module connected to at least one of the second surfaces different from the above.

According to the fuel cell module and the fuel cell device according to the present disclosure configured as described above, the degree of freedom in design for avoiding interference between pipes is improved.

It is a perspective view of the fuel cell module which concerns on 1st Embodiment. It is sectional drawing of the fuel cell module along the line II-II in FIG. It is sectional drawing of the fuel cell module along the line III-III in FIG. It is a perspective view of the modification of the fuel cell module of FIG. It is a side view which looked at the fuel cell module of FIG. 1 from the first direction. It is a side view which looked at the fuel cell module of FIG. 1 from the reverse direction of the 1st direction. It is a side view which looked at another modification of the fuel cell module of FIG. 1 from the first direction. It is a side view which looked at another modification of the fuel cell module of FIG. 1 from the reverse direction of the 1st direction. FIG. 3 is a side view of the fuel cell module of FIG. 1 as viewed from the first direction. FIG. 3 is a side view of the fuel cell module of FIG. 1 as viewed from the opposite direction of the first direction. It is a schematic diagram for demonstrating the flow of the gas in the fuel cell stack which has the folding structure in the 1st arrangement direction. It is a schematic diagram for demonstrating the flow of the gas in the fuel cell stack of FIG. It is a schematic diagram for demonstrating the flow of the gas in the fuel cell stack which has the folding structure in the direction perpendicular to the 1st arrangement direction. It is sectional drawing which shows the cross section by the plane perpendicular to the 2nd direction of the fuel cell module of 2nd Embodiment. It is a perspective view of the fuel cell module of 3rd Embodiment. It is a side view which looked at the fuel cell module of FIG. 15 from the reverse direction of the 2nd direction. It is sectional drawing of the fuel cell module along the line XVII-XVII in FIG. It is a side view which looked at the fuel cell module of FIG. 15 from a 2nd direction. It is a side view which looked at the fuel cell module of the modification of 3rd Embodiment from the reverse direction of 2nd direction. It is a side view which looked at the fuel cell module of the modification of 3rd Embodiment from a 2nd direction. It is a side view which looked at the fuel cell module of 4th Embodiment from the reverse direction of 2nd direction. It is a side view which looked at the fuel cell module of 4th Embodiment from a 2nd direction. It is a side view which looked at the fuel cell module of the modification of 4th Embodiment from the reverse direction of 2nd direction. It is a side view which looked at the fuel cell module of the modification of 4th Embodiment from a 2nd direction. It is a top view of the fuel cell stack of FIG. 23 seen from the second arrangement direction. It is a side view which looked at the fuel cell module of 5th Embodiment from the reverse direction of the 2nd direction. It is a side view which looked at the fuel cell module of 5th Embodiment from a 2nd direction. It is a side view which looked at the fuel cell module of 6th Embodiment from the reverse direction of 2nd direction. It is a side view which looked at the fuel cell module of 6th Embodiment from a 2nd direction. FIG. 28 is a side view of the fuel cell stack of FIG. 28 as viewed from the first direction. It is a perspective view which shows the modification of the fuel cell stack which changed the connection position with a plurality of pipes in the fuel cell module of 2nd Embodiment.

Hereinafter, embodiments of the fuel cell module to which the present disclosure is applied will be described with reference to the drawings.

As shown in FIG. 1, the fuel cell module 10 according to the first embodiment of the present disclosure includes a container 11, a plurality of pipes 12, and a fuel cell stack 13.

A part of the plurality of pipes 12 is connected to the first surface of the container 11 and the first surface of the fuel cell stack 13. Another portion of the plurality of pipes 12 is connected to at least one of the second surface of the container 11 and the second surface of the fuel cell stack 13. The second surface of the container 11 is different from the first surface of the container 11. The second surface of the fuel cell stack 13 is different from the first surface of the fuel cell stack 13. The first and second surfaces of the container 11 and the first and second surfaces of the fuel cell stack 13 will be described later. In a first embodiment, specifically, another portion of the plurality of pipes 12 may be connected to a first surface of the container 11 and a second surface of the fuel cell stack 13.

In the fuel cell device including the fuel cell module 10, the attitude toward the ground surface at the time of installation is determined. In the present specification, the direction in the fuel cell module 10 in the fuel cell device that is vertically upward in the posture defined with respect to the ground surface is referred to as an upward direction. In the present specification, the direction in the fuel cell module 10 in the fuel cell device that is vertically downward in the posture defined with respect to the ground surface is referred to as a downward direction. In the present specification, the two directions perpendicular to the vertical direction and perpendicular to each other are referred to as a first direction and a second direction.

As shown in FIG. 1, the container 11 may be in a substantially rectangular cuboid shape, for example. The rectangular cuboid container 11 may be formed by a rectangular surface perpendicular to the vertical direction, a substantially rectangular surface perpendicular to the first direction, and a substantially rectangular surface parallel to the second direction. The rectangular surface may be composed of a long side and a short side. In the present specification, the longitudinal direction of the container 11 is substantially parallel to the first direction. Further, the width direction of the container 11 is substantially parallel to the second direction. As used herein, substantially parallel may include, for example, a ± 5 ° relationship as long as it is possible to achieve the effects of the present disclosure.

The container 11 may be provided with a raw fuel gas and water supply pipe 14 and a discharge pipe 15 on the side surface SS1 on the first direction side. The raw fuel gas and water supply pipe 14 penetrates the wall on the first direction side of the container 11. As shown in FIG. 2, the raw fuel gas and water supply pipe 14 is connected to the reformer 16. The raw fuel gas and water supply pipe 14 supplies the raw fuel gas and water to the reformer 16. In the discharge pipe 15, the inner air communicates with the inside of the container 11. The exhaust pipe 15 discharges the exhaust gas generated by the combustion in the combustor 17.

As shown in FIG. 1, the container 11 may be provided with a thermocouple 18 and an ignition heater 19 extending from the side surface SS1 on the first direction side to the inside of the container 11. The thermocouple 18 detects the temperature of the combustion chamber, which will be described later. The ignition heater 19 ignites a combustor 17, which will be described later. The container 11 may be provided with an oxidant gas supply pipe 20 on the upper surface US. The oxidant gas supply pipe 20 penetrates the outer wall on the upper side of the container 11 and is connected to the oxidant gas supply path in the container 11.

The container 11 houses the reformer 16 and the combustor 17.

As shown in FIG. 2, the reformer 16 is internally supplied with the raw fuel gas and water via the raw fuel gas and water supply pipe 14. The reformer 16 includes at least a reformer. The reformer 16 may include a vaporizer.

The reforming unit contains a reforming catalyst, and reforms the raw material fuel gas with water to generate a fuel gas containing hydrogen. The vaporizer vaporizes water into steam and mixes it with the raw material and fuel gas. The vaporization section mixes steam-like water and raw fuel gas and supplies them to the reforming section. The vaporizer may be an external vaporizer of the fuel cell module 10. Alternatively, as described above, the vaporizing unit may be integrated with the reforming unit and included in the reformer 16. The reformer 16 sends the fuel gas to the fuel cell stack 13 via the fuel gas pipe 21 described later.

The unreacted oxidant gas is discharged from the fuel cell stack 13 to the combustor 17 via the oxidant off-gas pipe 22 described later. Further, unreacted fuel gas is discharged from the fuel cell stack 13 to the combustor 17 via the fuel off-gas pipe 23. The combustor 17 heats the reformer 16 by burning the unreacted combustion gas in the fuel cell stack 13 with the unreacted oxidant gas. The combustor 17 applies the heat required for the steam reforming reaction in the reformer 16 by heating the reformer 16. The combustor 17 may include an oxidant off-gas combustor 24 and a fuel off-gas combustor 25.

As shown in FIGS. 2 and 3, the combustor 17 may be provided in the container 11 below the reformer 16. The combustor 17 may abut on the lower inner surface of the container 11. More specifically, the oxidant off-gas combustor 24 may come into contact with the inner surface. The fuel off-gas combustor 25 may abut above the oxidant off-gas combustor 24.

An oxidant off-gas injection port and a fuel off-gas injection port may be formed on the upper surface of the combustor 17. The oxidant off-gas injection port may inject unreacted oxidant gas into the space IS in the container 11 in which the reformer 16 and the combustor 17 are housed. The fuel off gas injection port may inject unreacted fuel gas into the space IS in the container 11. The combustor 17 and the reformer 16 may be separated from each other, and the bottom surface of the reformer 16 may be heated by the combustion of the combustor 17.

As shown in FIGS. 2 and 3, an oxidizing agent flow path CH is formed between the outer wall and the inner wall of the container 11. The flow path CH connects the oxidant gas supply pipe 20 to the oxidant gas pipe 26 described later. The flow path CH may be formed, for example, by the inner space defined by the outer wall and the inner wall on each of the upper surface US, the side surface, and the lower surface of the container 11. The side surface on which the flow path CH is formed may be two surfaces perpendicular to the second direction. The flow path CH supplies a gas (for example, air) containing an oxidant such as oxygen sent from the oxidant gas supply pipe 20 to the fuel cell stack 13.

As shown in FIG. 2, the fuel gas pipe 21, the oxidant off gas pipe 22, the fuel off gas pipe 23, and the oxidant gas pipe 26 may be connected to the lower surface which is the first surface of the container 11. More specifically, the reformer 16 may be connected to the fuel gas pipe 21 via an internal pipe that penetrates the combustor 17 and the inner and outer walls of the container 11 and opens to the lower surface of the container 11. The oxidant off-gas combustor 24 may be connected to the oxidant off-gas pipe 22 via an internal pipe that penetrates the inner and outer walls of the container 11 and opens to the lower surface of the container 11. The fuel off-gas combustor 25 may be connected to the fuel off-gas pipe 23 via an internal pipe that penetrates the inner wall and the outer wall of the oxidant off-gas combustor 24 and the container 11 and opens to the lower surface of the container 11. The flow path CH may be connected to the oxidant gas pipe 26 via an opening formed in the lower surface of the container 11.

The plurality of pipes 12 send different types of gas between the container 11 and the fuel cell stack 13. The plurality of pipes 12 include, for example, a fuel gas pipe 21, an oxidant off gas pipe 22, a fuel off gas pipe 23, and an oxidant gas pipe 26. The fuel gas pipe 21 may send the fuel gas generated by the reformer 16 in the container 11 to the fuel cell stack 13. The oxidant off-gas pipe 22 may send the unreacted oxidant in the fuel cell stack 13 to the combustor 17 in the container 11, more specifically, the oxidant off-gas combustor 24. The fuel off-gas pipe 23 may send the unreacted fuel gas in the fuel cell stack 13 to the combustor 17 in the container 11, more specifically, the fuel off-gas combustor 25. The oxidant gas pipe 26 may send the oxidant to the fuel cell stack 13 from the flow path CH in the container 11.

The fuel cell stack 13 is located downward with respect to the container 11. The fuel cell stack 13 includes a plurality of stacked flat plate type fuel cell cells. The fuel cell generates electricity by the electrochemical reaction of the fuel gas generated by the reformer 16 and the oxidant. In the fuel cell, the total amount of fuel gas and the total amount of oxidant gas supplied do not cause an electrochemical reaction, but unreacted fuel gas and oxidant gas are discharged.

In the first embodiment, the stacking direction of the fuel cell may be substantially perpendicular to the first arrangement direction in which the container 11 and the fuel cell stack 13 are arranged, in other words, the vertical direction. As used herein, substantially vertical may include, for example, a 90 ° ± 5 ° relationship as long as it is possible to achieve the effects of the present disclosure. Further, in the first embodiment, the stacking direction of the fuel cell may be substantially parallel to the first direction, in other words, the longitudinal direction in the container 11. Alternatively, in the first embodiment, as shown in FIG. 4, the stacking direction of the fuel cell may be substantially parallel to the second direction, in other words, the width direction in the container 11. The width direction in the container 11 is a direction perpendicular to the longitudinal direction.

As shown in FIG. 2, the fuel cell stack 13 has a first surface Scs1 and a second surface Scs2 that are substantially perpendicular to the stacking direction. The second surface Scs2 of the fuel cell stack 13 is the back surface of the first surface Scs1 of the fuel cell stack 13. A part of the plurality of pipes 12 is connected to the first surface Scs1 of the fuel cell stack 13. The rest of a portion of the plurality of pipes 12 is connected to the second surface Scs2 of the fuel cell stack 13.

As shown in FIGS. 5 and 6, the fuel cell stack 13 may have a fuel gas inlet 27, an oxidant gas inlet 28, a fuel off gas outlet 29, and an oxidant off gas outlet 30 connected to a plurality of pipes 12. .. The fuel off gas outlet 29 may be located closer to the container 11 than the fuel gas inlet 27. The oxidant off-gas outlet 30 may be located closer to the container 11 than the oxidant gas inlet 28. More specifically, the fuel off-gas outlet 29 and the oxidant off-gas outlet 30 may be located near the end of the fuel cell stack 13 on the container 11 side. Further, the fuel gas inlet 27 and the oxidant gas inlet 28 may be located near the end of the fuel cell stack 13 on the side away from the container 11.

The fuel gas inlet 27 and the oxidant gas inlet 28 may be provided on the first surface Scs1 of the fuel cell stack 13. The fuel off-gas outlet 29 and the oxidant off-gas outlet 30 may be provided on the second surface Scs2 of the fuel cell stack 13. Alternatively, as shown in FIGS. 7 and 8, the fuel gas inlet 27 and the oxidant off-gas outlet 30 are provided on the first surface Scs1 of the fuel cell stack 13, and the oxidant gas inlet 28 and the fuel off-gas outlet 29 are fuel cells. It may be provided on the second surface Scs2 of the cell stack 13. Alternatively, as shown in FIGS. 9 and 10, the fuel gas inlet 27 and the fuel off-gas outlet 29 are provided on the first surface Scs1 of the fuel cell stack 13, and the oxidant gas inlet 28 and the oxidant off-gas outlet 30 are fuel cells. It may be provided on the second surface Scs2 of the cell stack 13.

The fuel gas inlet 27 and the fuel off gas outlet 29 are directed in a direction perpendicular to the first arrangement direction (in the first embodiment, the second direction) when viewed from the stacking direction (the first direction in the first embodiment). In the direction of), they may be positioned offset. The oxidant gas inlet 28 and the oxidant off gas outlet 30 are directed in a direction perpendicular to the first arrangement direction (in the first embodiment, the first direction) when viewed from the stacking direction (the first direction in the first embodiment). In the second direction), it may be positioned offset. The line segment connecting the fuel gas inlet 27 and the fuel off gas outlet 29 and the line segment connecting the oxidant gas inlet 28 and the oxidant off gas outlet 30 may intersect when viewed from the stacking direction.

In the fuel cell module 10 of the first embodiment having the above configuration, a part of the plurality of pipes 12 is connected to the first surface of the container 11 and the first surface Scs1 of the fuel cell stack 13, and the plurality of pipes 12 are connected to each other. Another part of the pipe 12 is connected to at least one of a second surface different from the first surface of the container 11 and a second surface Scs2 different from the first surface Scs1 of the fuel cell stack 13. With such a configuration, the fuel cell module 10 avoids interference as compared with a configuration in which all of the plurality of pipes 12 are connected to a single surface of the container 11 and a single surface of the fuel cell stack 13. Improve the degree of freedom in the design of. In particular, in a configuration in which a fuel cell stack 13 in which flat-plate fuel cell cells are stacked is applied, it is particularly useful to improve the degree of freedom in design.

Further, in the fuel cell module 10 of the first embodiment, the flow path CH of the oxidant is formed between the outer wall and the inner wall of the container 11. With such a configuration, the fuel cell module 10 utilizes the heat of the combustor 17 in the container 11 used for heating the reformer 16, and the oxidant gas before being sent to the fuel cell stack 13. Can be heated. Therefore, the fuel cell module 10 suppresses the generation of temperature distribution inside the fuel cell stack 13 due to the supply of the oxidant gas having a low temperature to the fuel cell stack 13, which causes a problem in the fuel cell stack 13. Can be suppressed.

Further, in the fuel cell module 10 of the first embodiment, the fuel off-gas outlet 29 is located closer to the container 11 than the fuel gas inlet 27, and the oxidant off-gas outlet 30 is closer to the container 11 than the oxidant gas inlet 28. Located in. For example, in a general fuel cell stack, the fuel gas inlet and the fuel off-gas outlet are arranged at the same position in the first arrangement direction, and the oxidant inlet and the oxidant off-gas outlet are arranged at the same position in the first arrangement direction. Structure is conceivable. In such a structure, as shown in FIG. 11, the fuel gas and the oxidant gas flow into a part of the fuel cell 31'from the inlet IN and unidirectionally in the fuel cell 31'in the vertical direction (FIG. 11). It flows in the upward direction in 11), then flows in the reverse direction of the vertical direction (downward in FIG. 11) in the fuel cell 31', and is discharged from the outlet OUT. In such a folded structure, gas pressure loss can occur. On the other hand, the fuel cell module 10 having the above configuration does not need to adopt a structure in which the gas is folded back in the first arrangement direction (vertical direction) in the fuel cell stack 13, as shown in FIG. , The fuel gas and the oxidant gas can be passed from the lower side to the upper side in the fuel cell stack 13 without folding back in the vertical direction. Therefore, the fuel cell module 10 does not need to be folded back in the first arrangement direction and can suppress the occurrence of gas pressure loss, so that the flow of the fuel gas and the oxidant gas can be smoothed. As a result, the fuel cell module 10 can improve the power generation efficiency.

Further, as shown in FIGS. 5 and 6, in the fuel cell module 10 of the first embodiment, the fuel gas inlet 27 and the oxidant gas inlet 28 are provided on the first surface Scs1 of the fuel cell stack 13 to provide fuel. The off-gas outlet 29 and the oxidant off-gas outlet 30 are provided on the second surface Scs2 of the fuel cell stack 13. For example, in a general fuel cell stack, it is conceivable to position the inlet and outlet of the fuel gas and the oxidant gas on the same surface. In such a structure, as shown in FIG. 13, the fuel gas and the oxidant gas flow from the inlet IN in one direction in the stacking direction, and then flow in each fuel cell 31'in the direction perpendicular to the stacking direction. Then, it flows in the direction opposite to the stacking direction, and is discharged from the outlet OUT. In such a configuration, the pressure loss becomes large, so that it becomes difficult for the gas to reach the electrochemical cell 11'distant from the inlet IN and the outlet OUT. On the other hand, the fuel cell module 10 having the above configuration does not need to adopt a structure in which the gas is folded back in the stacking direction in the fuel cell stack 13, and the fuel gas and the oxidizing agent gas in the fuel cell stack 13 do not need to be adopted. Can be passed from the first surface Scs1 side of the fuel cell stack 13 toward the second surface Scs2 side of the fuel cell stack 13. Therefore, the fuel cell module 10 can reduce the pressure loss and can reduce the difference in the amount of gas reached among the plurality of fuel cell cells. Therefore, the fuel cell module 10 can improve the power generation efficiency.

Alternatively, as shown in FIGS. 7 and 8, in the fuel cell module 10 of the modified example of the first embodiment, the fuel gas inlet 27 and the oxidant off-gas outlet 30 are provided on the first surface Scs1 of the fuel cell stack 13. The oxidant gas inlet 28 and the fuel off gas outlet 29 are provided on the second surface Scs2 of the fuel cell stack 13. With such a configuration, the fuel cell module 10 does not need to adopt a structure in which the gas is folded back in the stacking direction in the fuel cell stack 13, and the fuel gas is used in the fuel cell stack 13 in the fuel cell stack 13. From the first surface Scs1 of 13 toward the second surface Scs2 side of the fuel cell stack 13, the oxidizing agent gas is directed from the second surface Scs2 side of the fuel cell stack 13 to the first surface of the fuel cell stack 13. It can be passed toward the Scs1 side. Therefore, similarly, the fuel cell module 10 does not need to be folded back in the first arrangement direction, can suppress the occurrence of gas pressure loss, and can smoothly flow the fuel gas and the oxidant gas. As a result, the fuel cell module 10 can improve the power generation efficiency.

Next, the fuel cell module according to the second embodiment of the present disclosure will be described. In the second embodiment, the stacking direction of the fuel cell is different from that in the first embodiment. Hereinafter, the second embodiment will be described with a focus on the differences from the first embodiment. The same reference numerals are given to the parts having the same configuration as that of the first embodiment.

As shown in FIG. 14, the fuel cell module 100 according to the second embodiment is configured to include a container 110, a plurality of pipes 120, and a fuel cell stack 130, similar to the first embodiment. ..

The configuration of the container 110 other than the surface on which the fuel gas pipe 210 is provided is similar to that of the first embodiment.

In the second embodiment, unlike the first embodiment, the reformer 16 penetrates the wall portion of the container 11 sandwiching the combustor 17 together with the reformer 16, in other words, the wall portion other than the lower wall portion. It may be connected to the fuel gas pipe 210 via the internal pipe. More specifically in the second embodiment, the internal pipe is connected to the fuel gas pipe 210 through the side surface SS2 on the opposite side in the first direction, and the fuel gas generated by the reformer 16 is sent out. good.

The plurality of pipes 120 send different types of gas between the container 110 and the fuel cell stack 130, as in the first embodiment. The plurality of pipes 120 may include the fuel gas pipe 210, the oxidant off gas pipe 220, the fuel off gas pipe 230, and the oxidant gas pipe 260 as in the first embodiment. The function of the fuel gas pipe 210 may be the same as that of the fuel gas pipe 21 in the first embodiment. The function of the oxidant off-gas pipe 220 may be the same as that of the oxidant off-gas pipe 22 in the first embodiment. The function of the fuel off-gas pipe 230 may be the same as that of the fuel off-gas pipe 23 in the first embodiment. The function of the oxidant gas pipe 260 may be the same as that of the oxidant gas pipe 26 in the first embodiment.

As will be described later, the plurality of pipes 120 are connected to the fuel cell stack 130 whose posture with respect to the container 110 is different from that of the first embodiment. Therefore, the shape of the plurality of pipes 120 may be different from the shape of the plurality of pipes 12 in the first embodiment.

The function and internal structure of the fuel cell stack 130 may be the same as in the first embodiment. The attitude of the fuel cell stack 130 with respect to the container 110 is different from that of the first embodiment, and the stacking direction of the fuel cell is the first arrangement direction in which the container 110 and the fuel cell stack 130 are lined up, in other words, in the vertical direction. It is parallel.

Also in the fuel cell module 100 of the second embodiment having the above configuration, a part of the plurality of pipes 120 is connected to the first surface of the container 11 and the first surface Scs1 of the fuel cell stack 130, and the plurality of pipes 120 are connected to each other. Another part of the pipe 120 is connected to at least one of a second surface different from the first surface of the container 11 and a second surface Scs2 different from the first surface Scs1 of the fuel cell stack 130. Therefore, the fuel cell module 100 also improves the degree of freedom in design for avoiding interference, similar to the first embodiment.

Further, also in the fuel cell module 100 of the second embodiment, the flow path CH of the oxidant is formed between the outer wall and the inner wall of the container 110. Therefore, the fuel cell module 100 can also suppress a defect in the fuel cell stack 130, similar to the first embodiment.

Further, also in the fuel cell module 100 of the second embodiment, the fuel off gas outlet 29 is located closer to the container 11 than the fuel gas inlet 27, and the oxidant off gas outlet 30 is closer to the container 11 than the oxidant gas inlet 28. Located in. Therefore, the fuel cell module 100 can also improve the power generation efficiency, similar to the first embodiment.

Further, also in the fuel cell module 100 of the second embodiment, the fuel gas inlet 27 and the oxidant gas inlet 28 are provided on the first surface Scs1 of the fuel cell stack 13, and the fuel off gas outlet 29 and the oxidant off gas outlet 30 are provided. Is provided on the second surface Scs2 of the fuel cell stack 13. Therefore, the fuel cell module 100 can also improve the power generation efficiency, similar to the first embodiment.

Next, the fuel cell module according to the third embodiment of the present disclosure will be described. In the third embodiment, the arrangement of the fuel cell stack with respect to the container and the connection structure of the plurality of pipes are different from those in the first embodiment. Hereinafter, the third embodiment will be described with a focus on the differences from the first embodiment. The same reference numerals are given to the parts having the same configuration as that of the first embodiment.

As shown in FIG. 15, in the third embodiment, as in the first embodiment, a part of the plurality of pipes 121 is a first surface Svl1 of the container 111 and a first surface of the fuel cell stack 131. It is connected to the surface Scs1. Another portion of the plurality of pipes 121 is connected to at least one of the second surface of the container 111 and the second surface Scs2 of the fuel cell stack 131. In the third embodiment, specifically, as shown in FIG. 16, another part of the plurality of pipes 121 is a second surface Svl2 of the container 111 and a second surface of the fuel cell stack 131. Connected to Scs2.

As shown in FIG. 15, in the third embodiment, the shape of the container 111 is the same as that of the first embodiment. Unlike the first embodiment, the container 111 is provided with a raw fuel gas and water supply pipe 141 and a discharge pipe 151 on the first surface Svl1, which is an upward surface. The raw fuel gas and water supply pipe 141 penetrates the wall on the first surface Svl1 side of the container 111. As shown in FIG. 17, similar to the first embodiment, the raw fuel gas and water supply pipe 141 is connected to the reformer 161. The discharge pipe 151 communicates the inner space with the space IS in the container 111, similar to the first embodiment.

As shown in FIG. 15, the container 111 is provided with a thermocouple 18 and an ignition heater 19 extending from the side surface SS1 on the first direction side to the inside of the container 111, as in the first embodiment. As shown in FIG. 17, the container 111 is provided with an oxidant gas supply pipe 201 on the second surface Svl2 on the back side of the first surface Svl1. Therefore, as for the oxidant, the oxidant is introduced into the container 111 from the opposite side of the second arrangement direction, which will be described later. The oxidant gas supply pipe 201 penetrates the lower outer wall of the container 111 and is connected to the oxidant gas supply path in the container 111.

The container 111 houses the reformer 161 and the combustor 171 similar to the first embodiment.

As shown in FIG. 17, the reformer 161 is internally supplied with the raw fuel gas and water via the raw fuel gas and water supply pipe 14, similar to the first embodiment. Similar to the first embodiment, the reformer 161 sends the generated fuel gas to the fuel cell stack 131 via the fuel gas pipe 211 described later.

Similar to the first embodiment, the combustor 171 discharges unreacted oxidant gas from the fuel cell stack 131 via the oxidant off-gas pipe 221 described later. Further, in the combustor 171 similar to the first embodiment, unreacted fuel gas is discharged from the fuel cell stack 131 via the fuel off gas pipe 231. Combustor 171 may include an oxidant off-gas combustor 241 and a fuel off-gas combustor 251 similar to the first embodiment.

In the container 111, the combustor 171 and the reformer 161 are arranged side by side in the order of the combustor 171 and the reformer 161 along the second arrangement direction. The second arrangement direction is the upward direction in the fuel cell module 101.

As shown in FIG. 17, an oxidant flow path CH is formed between the outer wall and the inner wall of the container 111, similar to the first embodiment. The flow path CH connects the oxidant gas supply pipe 201 to the oxidant gas pipe 261 described later. The flow path CH may be formed, for example, by the inner space defined by the outer wall and the inner wall of the first surface Svl1, the side surface, and the second surface Svl2 of the container 111, respectively.

As shown in FIGS. 15 to 17, the fuel gas pipe 211 and the oxidant gas pipe 261 may be connected to the first surface Svl1 of the container 11. The oxidant off-gas pipe 221 and the fuel off-gas pipe 231 may be connected to the second surface Svl2 of the container 111.

One end of the fuel gas pipe 211 may be specifically connected to the reformer 161 via the container 111, more specifically, through the inner wall and the outer wall of the container 111. Specifically, the oxidant off-gas pipe 221 may be connected to the oxidant off-gas combustor 241 via an internal pipe that penetrates the inner wall and the outer wall of the container 111. Specifically, the fuel off-gas pipe 231 may be connected to the fuel off-gas combustor 251 via an inner wall and an outer wall of the container 11 and an internal pipe penetrating the oxidant off-gas combustor 241. Specifically, the oxidant gas pipe 261 may be connected to the flow path CH through an opening formed in the first surface Svl1 of the container 11.

In the third embodiment, the fuel cell stack 131 is located in a direction perpendicular to the second arrangement direction with respect to the container 111. More specifically, the fuel cell stack 131 is located in the direction opposite to the first direction with respect to the container 111. The stacking direction of the fuel cell in the fuel cell stack 131 is, for example, the same as the second direction.

In the third embodiment, as in the first embodiment, the fuel cell stack 131 has a first surface Scs1 and a second surface Scs2 substantially perpendicular to the stacking direction, as shown in FIGS. 15 and 16. Has. Therefore, the first surface Scs1 and the second surface Scs2 of the fuel cell stack 131 are perpendicular to the second direction. A portion of the plurality of pipes 121 is connected to the first surface Scs1 of the fuel cell stack 131, similar to the first embodiment. The rest of a portion of the plurality of pipes 121 is connected to the second surface Scs2 of the fuel cell stack 131, similar to the first embodiment.

As shown in FIGS. 16 and 18, the fuel cell stack 131 has a fuel gas inlet 271, an oxidant gas inlet 281 and a fuel off gas outlet 291 connected to a plurality of pipes 121, similar to the first embodiment. It has an oxidant off-gas outlet 301.

The fuel gas inlet 271 and the oxidant off-gas outlet 301 may be provided on the first surface Scs1 of the fuel cell stack 131. The oxidant gas inlet 281 and the fuel off gas outlet 291 may be provided on the second surface Scs2 of the fuel cell stack 131. Alternatively, as shown in FIGS. 19 and 20, the oxidant gas inlet 281 and the fuel off gas outlet 301 are provided on the first surface Scs1 of the fuel cell stack 131, and the fuel gas inlet 271 and the fuel off gas outlet 291 are fuel cells. It may be provided on the second surface Scs2 of the cell stack 131.

As shown in FIGS. 16, 19, and 20, the oxidant gas inlet 281 and the fuel off gas outlet 291 may be provided at the same position in the first direction. As shown in FIGS. 18 to 20, the fuel gas inlet 271 and the oxidant off gas outlet 301 may be provided at the same position in the first direction. As shown in FIGS. 16 and 18-20, the fuel gas inlet 271 and the oxidant off-gas outlet 301 may be located closer to the container 111 than the oxidant gas inlet 281 and the fuel off-gas outlet 291. More specifically, the fuel gas inlet 271 and the oxidant off-gas outlet 301 may be located near the end of the fuel cell stack 131 on the container 111 side. Further, the oxidant gas inlet 281 and the fuel off gas outlet 291 may be located near the end portion of the fuel cell stack 131 on the side away from the container 111.

The fuel gas inlet 271 and the oxidant gas inlet 281 may be provided at the same position in the second arrangement direction. The fuel off-gas outlet 291 and the oxidant off-gas outlet 301 may be provided at the same position in the second direction. The fuel gas inlet 271 may be located on the second arrangement direction side, in other words, on the upward side, with respect to the connection port with the fuel gas pipe 211 in the reformer 161. Therefore, the fuel gas pipe 211, which is one of the plurality of pipes 121, is connected to the fuel cell stack 131 on the side in the second arrangement direction from one end connected to the reformer 161. The oxidant gas inlet 281 may be located on the second arrangement direction side, in other words, on the upward side, with respect to the connection port with the oxidant gas pipe 261 in the container 111. Therefore, the oxidant gas pipe 261 which is one of the plurality of pipes 121 is connected to the fuel cell stack 131 on the side in the second arrangement direction from one end connected to the container 111.

Also in the fuel cell module 101 of the third embodiment having the above configuration, a part of the plurality of pipes 121 is connected to the first surface Svr1 of the container 111 and the first surface Scs1 of the fuel cell stack 131. Another part of the plurality of pipes 121 is connected to at least one of a second surface Svl2 different from the first surface Svl1 of the container 111 and a second surface Scs2 different from the first surface Scs1 of the fuel cell stack 131. Will be done. Therefore, the fuel cell module 101 also improves the degree of freedom in design for avoiding interference, similar to the first embodiment.

Further, also in the fuel cell module 101 of the third embodiment, the flow path CH of the oxidant is formed between the outer wall and the inner wall of the container 111. Therefore, the fuel cell module 101 can also suppress a defect in the fuel cell stack 131, similar to the first embodiment.

Further, in the fuel cell module 101 of the third embodiment, one end of the plurality of pipes 121 is connected to the reforming portion 161 via the container 111, and the other end is on the second arrangement direction side of the one end. It is connected to the fuel cell stack 131. With such a configuration, the fuel cell module 101 improves the supply efficiency of the high-temperature fuel gas reformer 161 that easily flows upward from the reformer 161 to the fuel cell stack 131. Therefore, the fuel cell module 101 can improve the power generation efficiency.

Further, in the fuel cell module 101 of the third embodiment, one end of one end of the plurality of pipes 121 is connected to the flow path CH in the container 111, and the other end is the fuel cell in the second arrangement direction side from the one end. Connected to stack 131. With such a configuration, the fuel cell module 101 improves the supply efficiency of the high-temperature oxidant gas that easily flows upward from the container 111 to the fuel cell stack 131. Therefore, the fuel cell module 101 can improve the power generation efficiency.

Next, the fuel cell module according to the fourth embodiment of the present disclosure will be described. In the fourth embodiment, the stacking direction of the fuel cell stack is different from that in the third embodiment. Hereinafter, the fourth embodiment will be described with a focus on the differences from the third embodiment. The same reference numerals are given to the parts having the same configuration as that of the third embodiment.

As shown in FIGS. 21 and 22, in the fourth embodiment, as in the third embodiment, a part of the plurality of pipes 122 is the first surface Svl1 of the container 111 and the fuel cell stack 132. It is connected to the surface Scs1 of 1. Another portion of the plurality of pipes 122 is connected to at least one of the second surface Svl2 of the container 111 and the second surface Scs2 of the fuel cell stack 132. In a fourth embodiment, specifically, another portion of the plurality of pipes 122 is connected to a second surface Svl2 of the container 111 and a second surface Scs2 of the fuel cell stack 132.

In the fourth embodiment, the structure, internal structure, and function of the container 111 are the same as those in the third embodiment. In the fourth embodiment, the connection structure of the plurality of pipes 122 to the container 111 is the same as that of the third embodiment.

In the fourth embodiment, the fuel cell stack 132 is located in a direction perpendicular to the second arrangement direction with respect to the container 111, similar to the third embodiment. The stacking direction of the fuel cell in the fuel cell stack 132 is different from that of the third embodiment and is the same as the second arrangement direction.

In a fourth embodiment, the fuel cell stack 132, like the third embodiment, has a first surface Scs1 and a second surface Scs2 that are substantially perpendicular to the stacking direction. Therefore, the first surface Scs1 and the second surface Scs2 of the fuel cell stack 132 are perpendicular to the second arrangement direction. A part of the plurality of pipes 122 is connected to the first surface Scs1 of the fuel cell stack 132 as in the third embodiment. The rest of a portion of the plurality of pipes 122 is connected to the second surface Scs2 of the fuel cell stack 132, as in the third embodiment.

Similar to the third embodiment, the fuel cell stack 132 has a fuel gas inlet 272, an oxidant gas inlet 282, a fuel off gas outlet 292, and an oxidant off gas outlet 302 connected to a plurality of pipes 122.

The fuel gas inlet 272 and the oxidant gas inlet 282 may be provided on the first surface Scs1 of the fuel cell stack 132. The fuel off-gas outlet 292 and the oxidant off-gas outlet 302 may be provided on the second surface Scs2 of the fuel cell stack 132.
stomach.

The fuel gas inlet 272 and the fuel off gas outlet 292 may be provided at the same position in the first direction. The oxidant gas inlet 282 and the oxidant off gas outlet 302 may be provided at the same position in the first direction. The fuel gas inlet 272 and the fuel off-gas outlet 292 may be located closer to the container 111 than the oxidant gas inlet 282 and the oxidant off-gas outlet 302. More specifically, the fuel gas inlet 272 and the fuel off gas outlet 292 may be located near the end of the fuel cell stack 132 on the container 111 side. Further, the oxidant gas inlet 282 and the oxidant off-gas outlet 302 may be located near the end of the fuel cell stack 132 on the side away from the container 111. The fuel gas inlet 272 and the oxidant off gas outlet 302 may be provided at the same position in the second direction. The oxidant gas inlet 282 and the fuel off gas outlet 292 may be provided at the same position in the second direction.

Alternatively, as shown in FIGS. 23 and 24, the fuel gas inlet 272 and the fuel off gas outlet 292 may be provided at the same position in the first direction. The oxidant off-gas outlet 302 may be located closer to the container 111 than the fuel gas inlet 272 and the fuel off-gas outlet 292. The fuel gas inlet 272 and the fuel off gas outlet 292 may be located closer to the container 111 than the oxidant gas inlet 282. More specifically, the oxidant off-gas outlet 302 may be located near the end of the fuel cell stack 132 on the container 111 side. Further, the oxidant gas inlet 282 may be located near the end of the fuel cell stack 132 on the side away from the container 111. The fuel gas inlet 272 and the fuel off gas outlet 292 may be located between the oxidant gas inlet 282 and the oxidant off gas outlet 302 in the first direction. As shown in FIG. 25, the fuel gas inlet 272 and the fuel off gas outlet 292 may be located near both ends of the fuel cell stack 132 in the second direction, respectively. The oxidant gas inlet 282 and the oxidant off gas outlet 302 may be located at the same position in the second direction.

As shown in FIGS. 21 to 24, the fuel gas inlet 272 may be located on the second arrangement direction side, in other words, on the upward side, with respect to the connection port with the fuel gas pipe 212 in the reformer 161. The oxidant gas inlet 282 may be located on the second arrangement direction side, in other words, on the upward side, with respect to the connection port with the oxidant gas pipe 262 in the container 111.

Also in the fuel cell module 102 of the fourth embodiment having the above configuration, a part of the plurality of pipes 122 is connected to the first surface Svr1 of the container 111 and the first surface Scs1 of the fuel cell stack 132. Another part of the plurality of pipes 122 is connected to at least one of a second surface Svl2 different from the first surface Svl1 of the container 111 and a second surface Scs2 different from the first surface Scs1 of the fuel cell stack 132. Will be done. Therefore, the fuel cell module 102 also improves the degree of freedom in design for avoiding interference, similar to the first embodiment.

Further, also in the fuel cell module 102 of the fourth embodiment, the flow path CH of the oxidant is formed between the outer wall and the inner wall of the container 111. Therefore, the fuel cell module 102 can also suppress a defect in the fuel cell stack 132, similar to the first embodiment.

Further, also in the fuel cell module 102 of the fourth embodiment, one end of one end of the plurality of pipes 122 is connected to the reforming portion 161 via the container 111, and the other end is on the side in the second arrangement direction from the one end. It is connected to the fuel cell stack 132. Therefore, the fuel cell module 102 can also improve the power generation efficiency, similar to the third embodiment.

Further, in the fuel cell module 102 of the fourth embodiment, one end of one end of the plurality of pipes 122 is connected to the flow path CH in the container 111, and the other end is the fuel cell in the second arrangement direction side from the one end. Connected to stack 132. Therefore, the fuel cell module 102 can also improve the power generation efficiency, similar to the third embodiment.

Next, the fuel cell module according to the fifth embodiment of the present disclosure will be described. In the fifth embodiment, the connection structure between the plurality of pipes and the fuel cell stack is different from that in the third embodiment. Hereinafter, the fifth embodiment will be described with a focus on the differences from the third embodiment. The same reference numerals are given to the parts having the same configuration as that of the third embodiment or the fourth embodiment.

As shown in FIGS. 26 and 27, in the fifth embodiment, as in the third embodiment, a part of the plurality of pipes 123 is the first surface Svl1 of the container 111 and the fuel cell stack 133. It is connected to the surface Scs1 of 1. Another portion of the plurality of pipes 123 is connected to at least one of the second surface Svl2 of the container 111 and the second surface Scs2 of the fuel cell stack 133. In a fifth embodiment, specifically, another portion of the plurality of pipes 123 is connected to a second surface Svl2 of the container 111 and a first surface Scs1 of the fuel cell stack 132.

In the fifth embodiment, the structure, internal structure, and function of the container 111 are the same as those in the third embodiment. In the fifth embodiment, the connection structure of the plurality of pipes 123 to the container 111 is the same as that of the third embodiment.

In a fifth embodiment, the fuel cell stack 133 is located in a direction perpendicular to the second arrangement direction with respect to the container 111, similar to the third embodiment. The stacking direction of the fuel cell in the fuel cell stack 133 is the same as that of the first direction, unlike the third embodiment.

In a fifth embodiment, the fuel cell stack 133, like the third embodiment, has a first surface Scs1 and a second surface Scs2 that are substantially perpendicular to the stacking direction. Therefore, the first surface Scs1 and the second surface Scs2 of the fuel cell stack 133 are perpendicular to the first direction. All of the plurality of pipes 123 are connected to the first surface Scs1 of the fuel cell stack 133, unlike the third embodiment.

Similar to the third embodiment, the fuel cell stack 133 has a fuel gas inlet 273, an oxidant gas inlet 283, a fuel off gas outlet 293, and an oxidant off gas outlet 303 connected to a plurality of pipes 123. The fuel gas inlet 273, the oxidant gas inlet 283, the fuel off gas outlet 293, and the oxidant off gas outlet 303 may be provided on the first surface Scs1 of the fuel cell stack 133.

The fuel gas inlet 273 may be located on the second arrangement direction side, in other words, on the upward side, with respect to the connection port with the fuel gas pipe 213 in the reformer 161. The oxidant gas inlet 283 may be located on the second arrangement direction side, in other words, on the upward side, with respect to the connection port with the oxidant gas pipe 263 in the container 111.

Also in the fuel cell module 103 of the fifth embodiment having the above configuration, a part of the plurality of pipes 123 is connected to the first surface Svl1 of the container 111 and the first surface Scs1 of the fuel cell stack 133. Another part of the plurality of pipes 123 is connected to at least one of a second surface Svl2 different from the first surface Svl1 of the container 111 and a second surface Scs2 different from the first surface Scs1 of the fuel cell stack 133. Will be done. Therefore, the fuel cell module 103 also improves the degree of freedom in design for avoiding interference, similar to the first embodiment.

Further, also in the fuel cell module 103 of the fifth embodiment, the flow path CH of the oxidant is formed between the outer wall and the inner wall of the container 111. Therefore, the fuel cell module 103 can also suppress a defect in the fuel cell stack 133, similar to the first embodiment.

Further, also in the fuel cell module 103 of the fifth embodiment, one end of the plurality of pipes 123 is connected to the reforming portion 161 via the container 111, and the other end is on the second arrangement direction side of the one end. It is connected to the fuel cell stack 133. Therefore, the fuel cell module 103 can also improve the power generation efficiency, similar to the third embodiment.

Further, in the fuel cell module 103 of the fifth embodiment, one end of one end of the plurality of pipes 123 is connected to the flow path CH in the container 111, and the other end is the fuel cell in the second arrangement direction side from the one end. Connected to stack 133. Therefore, the fuel cell module 103 can also improve the power generation efficiency, similar to the third embodiment.

Next, the fuel cell module according to the sixth embodiment of the present disclosure will be described. In the sixth embodiment, the connection structure between the plurality of pipes and the fuel cell stack is different from that in the third embodiment. Hereinafter, the sixth embodiment will be described with a focus on the differences from the third embodiment. The same reference numerals are given to the parts having the same configuration as that of the third embodiment, the fourth embodiment, or the fifth embodiment.

As shown in FIGS. 28 and 29, in the sixth embodiment, as in the first embodiment, a part of the plurality of pipes 124 is a first surface Svl1 of the container 114 and a first surface of the fuel cell stack 134. It is connected to the surface Scs1 of 1. Another portion of the plurality of pipes 124 is connected to at least one of the second surface Svl2 of the container 114 and the second surface Scs2 of the fuel cell stack 134. In a sixth embodiment, specifically, another portion of the plurality of pipes 124 is connected to a second surface Svl2 of the container 114 and a first surface Scs1 of the fuel cell stack 134.

In the sixth embodiment, the shape of the container 114 is the same as that of the third embodiment. Unlike the third embodiment, the container 114 has an oxidant gas supply pipe 204 in addition to the raw fuel gas and water supply pipe 141 and the discharge pipe 151 on the first surface Svl1, which is the upper surface. Is provided. Similar to the third embodiment, the oxidant gas supply pipe 204 penetrates the outer wall on the upper side of the container 114 and is connected to the oxidizer gas flow path CH in the container 111.

In a sixth embodiment, the fuel gas pipe 214 may be connected to the first surface Svl1 of the container 114. The oxidant gas pipe 264, the oxidant off gas pipe 224, and the fuel off gas pipe 234 may be connected to the second surface Svl2 of the container 114.

In the sixth embodiment, the fuel cell stack 134 is located in a direction perpendicular to the second arrangement direction with respect to the container 114, similar to the third embodiment. The stacking direction of the fuel cell in the fuel cell stack 132 is the same as the first direction as in the fifth embodiment.

In a sixth embodiment, the fuel cell stack 134, like the third embodiment, has a first surface Scs1 and a second surface Scs2 that are substantially perpendicular to the stacking direction. Therefore, the first surface Scs1 and the second surface Scs2 of the fuel cell stack 134 are perpendicular to the first direction. All of the plurality of pipes 124 are connected to the first surface Scs1 of the fuel cell stack 134 as in the fifth embodiment.

As shown in FIG. 30, the fuel cell stack 134 has a fuel gas inlet 274, an oxidant gas inlet 284, a fuel off gas outlet 294, and an oxidant connected to a plurality of pipes 124, similar to the third embodiment. It has an off-gas outlet 304. The fuel gas inlet 274, the oxidant gas inlet 284, the fuel off gas outlet 294, and the oxidant off gas outlet 304 may be provided on the first surface Scs1 of the fuel cell stack 134.

The fuel gas inlet 274 may be located on the second arrangement direction side, in other words, on the upward side, with respect to the connection port with the fuel gas pipe 214 in the reformer 161.

Also in the fuel cell module 104 of the sixth embodiment having the above configuration, a part of the plurality of pipes 124 is connected to the first surface Svl1 of the container 114 and the first surface Scs1 of the fuel cell stack 134. Another part of the plurality of pipes 124 is connected to at least one of a second surface Svl2 different from the first surface Svl1 of the container 114 and a second surface Scs2 different from the first surface Scs1 of the fuel cell stack 134. Will be done. Therefore, the fuel cell module 104 also improves the degree of freedom in design for avoiding interference, similar to the first embodiment.

Further, also in the fuel cell module 104 of the sixth embodiment, the flow path CH of the oxidant is formed between the outer wall and the inner wall of the container 114. Therefore, the fuel cell module 104 can also suppress defects in the fuel cell stack 134, similar to the first embodiment.

Further, also in the fuel cell module 104 of the sixth embodiment, one end of the plurality of pipes 124 is connected to the reforming portion 161 via the container 114, and the other end is on the second arrangement direction side of the one end. It is connected to the fuel cell stack 134. Therefore, the fuel cell module 104 can also improve the power generation efficiency, similar to the third embodiment.

Although the present invention has been described with reference to the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and modifications based on the present disclosure. Therefore, it should be noted that these modifications and modifications are included in the scope of the present invention.

For example, in the first embodiment and the second embodiment, the fuel gas inlet 27 and the fuel off-gas outlet 29, and the oxidant gas inlet 28 and the oxidant off-gas outlet 30 are both planes perpendicular to the stacking direction of the fuel cell. It is provided near both ends in the same direction as above, but is not limited to such a configuration. For example, as shown in FIG. 30, the fuel gas inlet 27 and the fuel off gas outlet 29 are provided near both ends in any one direction (first direction) on a plane perpendicular to the stacking direction, and the oxidant gas inlet 28 is provided. And the oxidant off-gas outlet 30 may be provided near both ends in the direction perpendicular to the one direction (second direction) on the plane.

Further, for example, in the third to sixth embodiments, the fuel cell stacks 131 to 134 are configured to be located on the opposite side of the first direction with respect to the containers 111 and 114, for example. , May be located in the second direction.

10,100 Fuel cell module 11, 110, 111, 114 Container 12, 120, 121, 122, 123, 124 Multiple pipes 13, 130, 131, 132, 133, 134 Fuel cell cell stack 14, 141 Raw fuel gas and Water supply pipe 15, 151 Discharge pipe 16, 161 Reformer 17, 171 Combustor 18 Thermoelectric pair 19 Ignition heater 20, 201, 204 Oxidizer gas supply pipe 21, 210, 211, 212, 213, 214 Fuel gas pipe 22, 220, 221 222, 223, 224 Oxidizing agent off-gas piping 23, 230, 231, 232, 233, 234 Fuel off-gas piping 24, 241 Oxidizing agent off-gas combustor 25, 251 Fuel off-gas combustor 26, 260, 261 262,262,264 Oxidizing gas pipe 27,271,272,273 Fuel gas inlet 28,281,282,283 Oxidizing agent gas inlet 29,291,292,293 Fuel off gas outlet 30,301,302,303 Oxidating agent off gas Exit 31'Fuel cell cell CH flow path IN inlet Space in IS container OUT Exit Scs1 First surface of fuel cell stack Scs2 Second surface of fuel cell stack SS1 First direction side side SS2 Second Opposite side of direction Svl1 first surface of container Svl2 second surface of container US top surface

Claims (18)

A container that houses the reforming part and the combustor that heats the reforming part,
A fuel cell stack in which a plurality of fuel cell cells that generate electricity by the electrochemical reaction of the fuel gas generated by the reforming unit and the oxidant are laminated, and
A plurality of pipes, each of which sends different types of gas, are provided between the container and the fuel cell stack.
A part of the plurality of pipes is connected to the first surface of the container and the first surface of the fuel cell stack.
Another part of the plurality of pipes is connected to at least one of a second surface different from the first surface of the container and a second surface different from the first surface of the fuel cell stack. Battery module. In the fuel cell module according to claim 1,
The first surface of the fuel cell stack is substantially perpendicular to the stacking direction of the fuel cell.
The second surface of the fuel cell stack is the back side of the first surface of the fuel cell stack.
A fuel cell module in which the rest of a portion of the plurality of pipes is connected to a second surface of the fuel cell stack. In the fuel cell module according to claim 2.
A fuel cell module in which a flow path for an oxidant is formed between the outer wall and the inner wall of the container. In the fuel cell module according to claim 2 or 3.
The internal piping in the container that sends out the fuel gas generated by the reforming portion is a fuel cell module that penetrates the wall portion other than the wall portion that sandwiches the combustor together with the reforming portion in the container. In the fuel cell module according to any one of claims 2 to 4.
The fuel cell stack has a fuel gas inlet, an oxidant gas inlet, a fuel off gas outlet, and an oxidant off gas outlet connected to the plurality of pipes.
The fuel off gas outlet is located closer to the container than the fuel gas inlet.
The oxidant off-gas outlet is a fuel cell module located closer to the container than the oxidant gas inlet. In the fuel cell module according to claim 5.
The fuel gas inlet and the oxidant gas inlet are provided on the first surface of the fuel cell stack, and the fuel off gas outlet and the oxidant off gas outlet are provided on the second surface of the fuel cell stack. Battery module. In the fuel cell module according to claim 5.
The fuel gas inlet and the oxidant off-gas outlet are provided on the first surface of the fuel cell stack, and the oxidizer gas inlet and the fuel off-gas outlet are provided on the second surface of the fuel cell stack. Battery module. In the fuel cell module according to claim 5.
The fuel gas inlet and the fuel off-gas outlet are provided on the first surface of the fuel cell stack, and the oxidant gas inlet and the oxidant off-gas outlet are provided on the second surface of the fuel cell stack. Battery module. In the fuel cell module according to any one of claims 6 to 8.
A fuel cell module whose stacking direction is substantially perpendicular to a first arrangement direction in which the container and the fuel cell stack are lined up. In the fuel cell module according to claim 9.
A fuel cell module whose longitudinal direction substantially perpendicular to the first arrangement direction in the container is parallel to the stacking direction. In the fuel cell module according to claim 9.
A fuel cell module in the container whose width direction substantially perpendicular to the first arrangement direction is substantially parallel to the stacking direction. In the fuel cell module according to claim 6,
The stacking direction is parallel to the first arrangement direction in which the container and the fuel cell stack are lined up. In the fuel cell module according to claim 1,
In the container, the combustor and the reforming portion are arranged side by side in the order of the second arrangement direction.
The fuel cell stack is a fuel cell module located in a direction perpendicular to the second arrangement direction with respect to the container. In the fuel cell module according to claim 13,
A fuel cell module in which one end of one of the plurality of pipes is connected to the reforming portion via the container, and the other end is connected to the fuel cell stack on the side in the second arrangement direction from the one end. In the fuel cell module according to claim 13 or 14.
The first surface of the container is the surface on the second arrangement direction side.
The second surface of the container is the back surface of the first surface of the container.
The second surface of the fuel cell stack is the back surface of the first surface of the fuel cell stack.
A fuel cell module in which another part of the plurality of pipes is connected to a second surface of the container and a second surface of the fuel cell stack. In the fuel cell module according to claim 13 or 14.
The first surface of the container is the surface on the second arrangement direction side.
The second surface of the container is the surface opposite to the second arrangement direction.
A fuel cell module in which another part of the plurality of pipes is connected to a first surface of the fuel cell stack. In the fuel cell module according to any one of claims 13 to 16.
A flow path of the oxidant is formed between the outer wall and the inner wall of the container.
An oxidant is introduced into the container from the opposite side of the second arrangement direction, and the oxidant is introduced into the container.
One of the plurality of pipes connected to the flow path of the oxidant is a fuel cell module connected to the fuel cell stack on the side in the second arrangement direction with respect to the container. A fuel cell device comprising the fuel cell module according to any one of claims 1 to 17.

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