JP6224329B2 - Fuel cell system - Google Patents

Description

  The present invention relates to a fuel cell system.

  As a conventional fuel cell system, the one shown in Patent Document 1 is known. In this fuel cell system, the casing is partitioned into a module storage chamber and a power conditioner storage chamber. In addition, an intake hole for outside air is provided in the casing in contact with the power conditioner storage chamber, an exhaust hole is provided in the casing in contact with the module storage chamber, and an air guide pipe that connects the power conditioner storage chamber and the module storage chamber is provided. Is provided. Then, the ventilation air introduced from the outside air is allowed to flow in the order around the power conditioner and then around the module to remove heat generated from the power conditioner and the module. Patent Document 2 describes a fuel cell system equipped with an exhaust heat recovery system. In this fuel cell system, the housing is divided into two parts, the upper module storage room and the lower auxiliary equipment / power conditioner storage room, by the partition plate, and the lower housing is in contact with the auxiliary equipment / power conditioner storage room. An air intake hole is provided in the housing, an exhaust hole is provided in the housing that contacts the upper module storage chamber, and an air inlet that communicates the lower accessory / power conditioner storage chamber with the upper module storage chamber. Is provided. In addition, a heat exchanger for exhaust heat recovery is provided in front of the exhaust gas outlet and the exhaust hole of the module. The ventilation air introduced from outside air flows in the order around the auxiliary equipment and power conditioner (lower storage room) and around the module (upper storage room) to cool the heat generated from the auxiliary equipment, power conditioner and module. can do.

JP 2006-252964 A JP 2010-238471 A

  However, the fuel cell system described in Patent Document 1 removes heat generated by introducing outside air into the housing and air-cooling the power conditioner and the module with air for ventilation. Cooling depends on ventilation air flowing through the enclosure. In such a structure, when the airtightness of the casing itself is to be maintained, supply and exhaust with the outside air cannot be performed (or the amount of air for ventilation is greatly reduced). Since the temperature rises, the temperature in the housing rises, and there is a risk that the auxiliary machinery and the power conditioner are exposed to a high temperature. Moreover, in patent document 2, although it has the structure which prevents the temperature rise inside a housing | casing by the air for ventilation heated with the module being collect | recovered by the heat exchanger of an exhaust heat recovery system by hot water storage water, Since the module is located upstream of the heat exchanger in the flow of ventilation air, it is assumed that if the amount of ventilation air is significantly reduced, the heat removal of the module will not function well. There is a risk that the temperature of the accessories and the power conditioner will rise through the plate and affect their operation.

  The present invention has been made to solve such a problem, and an object of the present invention is to provide a fuel cell system capable of preventing an auxiliary machine, a power conditioner, and the like in a casing from being exposed to high temperatures.

A fuel cell system according to the present invention includes a power generation unit including a cell stack that generates power using a hydrogen-containing gas, a support that supports the power generation unit, and an auxiliary machine as a peripheral device for generating power in the power generation unit. A control unit that adjusts the power generated by the power generation unit or controls the operation of the power generation unit, and a housing that houses at least the power generation unit, the support, the auxiliary device, and the control unit , The power generation unit is disposed between the power generation unit and the auxiliary device and the control unit, and has an opening portion that opens toward the power generation unit side, and an opening portion that opens toward the auxiliary device and the control unit side . Insulates heat and has a flow channel inside, and is connected to a suction unit that sucks air in the flow channel, and the support is sucked by an opening that opens toward the power generation unit side by a partition wall. Internal space to which the parts are connected, and openings and suction parts that open toward the auxiliary equipment and control part side But has an internal space which is connected to the respective inner space, characterized in that there is a flow path.
In addition, a fuel cell system according to the present invention includes a power generation unit including a cell stack that generates power using a hydrogen-containing gas, a support that supports the power generation unit, and a supplementary peripheral device for generating power in the power generation unit. A control unit that adjusts the electric power generated by the power generation unit or controls the operation of the power generation unit, and a housing that houses at least the power generation unit, the support, the auxiliary device, and the control unit. Is disposed between the power generation unit, the auxiliary machine and the control unit, and has an opening opening toward the power generation unit side and an opening opening toward the auxiliary machine and control unit side, and the power generation unit Insulating heat from the inside, and having a flow path inside, connected to a suction part that sucks air in the flow path, the support has a heat insulating material inside, the heat insulating material Thus, the opening that opens toward the power generation unit is connected to the suction unit, and the Wherein the flow path opening and the suction unit is connected to an opening is provided Te.

According to the fuel cell system of the present invention, even when the air in the housing is heated by the heat from the power generation unit, it is heated from the internal space of the housing by being sucked by the suction unit through the support. The removed air can be removed. The support has a function of insulating heat from the power generation unit. The support can thermally separate the region where the power generation unit that generates heat is disposed and the other region through the support in the housing. Thereby, it is possible to thermally separate the region where the power generation unit is disposed from the region where the auxiliary machine, the power conditioner, and the like are disposed. By the above, it can prevent that the auxiliary machine in a housing | casing, a power conditioner, etc. are exposed to high temperature. In addition, the support can thermally separate the region where the power generation unit is disposed from the region where the auxiliary machine and the control unit are disposed. Moreover, the opening part opened toward the power generation unit side can efficiently suck air warmed by the heat generated from the power generation unit. Furthermore, the opening that opens toward the auxiliary device and the control unit can efficiently suck air warmed by heat generated by the auxiliary device and the control unit. As a result, it is possible to efficiently prevent the auxiliary machine, power conditioner, and the like in the casing from being exposed to high temperatures.

  In the fuel cell system according to the present invention, the flow path is preferably constituted by an internal space formed in the support body. The internal space formed in the support body can also function as a heat insulating layer by constituting an air layer. Accordingly, the flow path itself of the support can function as a heat insulating layer without using a heat insulating material or the like.

  In the fuel cell system according to the present invention, the suction unit preferably supplies the sucked air to the cathode of the cell stack. Thus, by using the air heated by the heat in the housing for power generation, the heat removed from the housing can be used effectively.

  Moreover, in the fuel cell system according to the present invention, it is preferable that the suction unit discharges the sucked air to the outside of the housing. Thus, by releasing the heat removed from the inside of the housing to the outside, it is possible to efficiently prevent the inside of the housing from becoming high temperature.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent that the auxiliary machine in a housing | casing, a power conditioner, etc. are exposed to high temperature.

1 is a schematic block diagram showing a fuel cell system according to an embodiment of the present invention. It is a schematic block diagram which shows the principal part of the fuel cell system which concerns on one Embodiment of this invention. It is a perspective view of the hollow base which concerns on this embodiment. It is sectional drawing which shows the example of an internal structure of a hollow base. It is a perspective view which shows the hollow base which concerns on a modification.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a schematic block diagram showing a fuel cell system according to an embodiment of the present invention. As shown in FIG. 1, the fuel cell system 1 includes a desulfurization unit 2, a water vaporization unit 3, a hydrogen generation unit 4, a cell stack 5, an offgas combustion unit 6, a hydrogen-containing fuel supply unit 7, A supply unit 8, an oxidant supply unit 9, a power conditioner 10, and a control unit 11 are provided.

  The fuel cell system 1 generates power in the cell stack 5 using a hydrogen-containing fuel and an oxidant. The type of the cell stack 5 in the fuel cell system 1 is not particularly limited, and examples thereof include a polymer electrolyte fuel cell (PEFC), a solid oxide fuel cell (SOFC), and phosphoric acid. A type fuel cell (PAFC: Phosphoric Acid Fuel Cell), a molten carbonate type fuel cell (MCFC), and other types can be adopted. 1 may be appropriately omitted depending on the type of cell stack 5, the type of hydrogen-containing fuel, the reforming method, and the like.

  As the hydrogen-containing fuel, for example, a hydrocarbon fuel is used. As the hydrocarbon fuel, a compound containing carbon and hydrogen in the molecule (may contain other elements such as oxygen) or a mixture thereof is used. Examples of hydrocarbon fuels include hydrocarbons, alcohols, ethers, and biofuels. These hydrocarbon fuels are derived from conventional fossil fuels such as petroleum and coal, and synthetic systems such as synthesis gas. Those derived from fuel and those derived from biomass can be used as appropriate. Specific examples of hydrocarbons include methane, ethane, propane, butane, natural gas, LPG (liquefied petroleum gas), city gas, town gas, gasoline, naphtha, kerosene, and light oil. Examples of alcohols include methanol and ethanol. Examples of ethers include dimethyl ether. Examples of biofuels include biogas, bioethanol, biodiesel, and biojet.

  As the oxidizing agent, for example, air, pure oxygen gas (which may contain impurities that are difficult to remove by a normal removal method), or oxygen-enriched air is used.

  The desulfurization unit 2 performs desulfurization of the hydrogen-containing fuel supplied to the hydrogen generation unit 4. The desulfurization part 2 has a desulfurization catalyst for removing sulfur compounds contained in the hydrogen-containing fuel. As the desulfurization method of the desulfurization unit 2, for example, an adsorptive desulfurization method that adsorbs and removes sulfur compounds and a hydrodesulfurization method that removes sulfur compounds by reacting with hydrogen are employed. The desulfurization unit 2 supplies the desulfurized hydrogen-containing fuel to the hydrogen generation unit 4.

  The water vaporization unit (water vaporizer) 3 generates water vapor supplied to the hydrogen generation unit 4 by heating and vaporizing water. For the heating of the water in the water vaporization unit 3, for example, heat generated in the fuel cell system 1 such as recovering the heat of the hydrogen generation unit 4, the heat of the off-gas combustion unit 6, or the heat of the exhaust gas may be used. Moreover, you may heat water using other heat sources, such as a heater and a burner separately. In FIG. 1, only heat supplied from the off-gas combustion unit 6 to the hydrogen generation unit 4 is described as an example, but the present invention is not limited to this. The water vaporization unit 3 supplies the generated water vapor to the hydrogen generation unit 4.

  The hydrogen generation unit 4 generates a hydrogen rich gas (hydrogen-containing gas) using the hydrogen-containing fuel from the desulfurization unit 2. The hydrogen generator 4 has a reformer that reforms the hydrogen-containing fuel with a reforming catalyst. The reforming method in the hydrogen generating unit 4 is not particularly limited, and for example, steam reforming, partial oxidation reforming, autothermal reforming, and other reforming methods can be employed. The hydrogen generator 4 may have a configuration for adjusting the properties in addition to the reformer reformed by the reforming catalyst depending on the properties of the hydrogen rich gas required for the cell stack 5. For example, when the type of the cell stack 5 is a polymer electrolyte fuel cell (PEFC) or a phosphoric acid fuel cell (PAFC), the hydrogen generation unit 4 is configured to remove carbon monoxide in the hydrogen-rich gas. (For example, a shift reaction part and a selective oxidation reaction part). The hydrogen generation unit 4 supplies a hydrogen rich gas to the anode 12 of the cell stack 5.

  The cell stack 5 generates power using the hydrogen rich gas from the hydrogen generation unit 4 and the oxidant from the oxidant supply unit 9. The cell stack 5 includes an anode 12 to which a hydrogen-rich gas is supplied, a cathode 13 to which an oxidant is supplied, and an electrolyte 14 disposed between the anode 12 and the cathode 13. The cell stack 5 supplies power to the outside via the power conditioner 10. The cell stack 5 supplies the hydrogen rich gas and the oxidant, which have not been used for power generation, to the off gas combustion unit 6 as off gas. Note that a combustion section (for example, a combustor that heats the reformer) provided in the hydrogen generation section 4 may be shared with the off-gas combustion section 6.

  The off gas combustion unit 6 burns off gas supplied from the cell stack 5. The heat generated by the off-gas combustion unit 6 is supplied to the hydrogen generation unit 4 and used for generation of a hydrogen rich gas in the hydrogen generation unit 4.

  The hydrogen-containing fuel supply unit 7 supplies hydrogen-containing fuel to the desulfurization unit 2. The water supply unit 8 supplies water to the water vaporization unit 3. The oxidant supply unit 9 supplies an oxidant to the cathode 13 of the cell stack 5. The hydrogen-containing fuel supply unit 7, the water supply unit 8, and the oxidant supply unit 9 are configured by a pump, for example, and are driven based on a control signal from the control unit 11.

  The power conditioner 10 adjusts the power from the cell stack 5 according to the external power usage state. For example, the power conditioner 10 performs a process of converting a voltage and a process of converting DC power into AC power.

  The control unit 11 performs control processing for the entire fuel cell system 1. The control unit 11 is configured by, for example, a device including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and an input / output interface. The control unit 11 is electrically connected to a hydrogen-containing fuel supply unit 7, a water supply unit 8, an oxidant supply unit 9, a power conditioner 10, and other sensors and auxiliary equipment not shown. The control unit 11 acquires various signals generated in the fuel cell system 1 and outputs a control signal to each device in the fuel cell system 1.

  FIG. 2 is a schematic block diagram showing the main part of the fuel cell system according to one embodiment of the present invention. As shown in FIG. 2, the fuel cell system 1 includes a power generation unit 21, the power conditioner 10, the auxiliary module 22, a hollow pedestal (support) 50, and a blower (suction unit) 26. These are housed in an airtight manner so as to be installed in the housing 23.

  The power generation unit 21 is a module that generates power, and includes at least the desulfurization unit 2, the water vaporization unit 3, the hydrogen generation unit 4, the cell stack 5, and the off-gas combustion unit 6. The power generation unit 21 is accommodated in a box 21a and modularized.

  As described above, the power conditioner 10 adjusts the power generated by the cell stack 5 of the power generation unit 21. The power conditioner 10 has a control base as the control unit 11 that controls the operation of the power generation unit 21. The power conditioner 10 may be accommodated in the box 10a and modularized (not necessarily), like the power generation unit 21. The auxiliary machine module 22 is a peripheral device for generating power in the power generation unit. Similar to the power generation unit 21 and the power conditioner 10, the auxiliary machine module 22 may be accommodated in the box 22a and modularized (not necessarily).

  The hollow pedestal 50 functions as a pedestal for placing and supporting the power generation unit 21. In the housing 23, the power conditioner 10 and the auxiliary module 22 are disposed in the lower region, the hollow pedestal 50 is disposed above the power conditioner 10 and the auxiliary module 22, and power generation is performed on the hollow pedestal 50. Part 21 is arranged. Thus, the hollow pedestal 50 is disposed between the power generation unit 21, the power conditioner 10, and the auxiliary machine module 22.

  The hollow pedestal 50 in the present embodiment functions as a heat insulating unit that insulates heat from the power generation unit 21. That is, the hollow pedestal 50 insulates and thermally isolates the power generation unit 21 from the power conditioner 10 and the accessory module 22, thereby causing the power conditioner 10 and the accessory to be heated by heat generated in the power generation unit 21. The module 22 is prevented from being exposed to high temperatures. The hollow pedestal 50 has a flow path 51 through which air flows. The flow path 51 forms an opening 52 that opens toward the internal space 23 a of the housing 23. The flow path 51 is connected to the blower 26 via a connection pipe 27 extending toward the blower 26. Thereby, the flow path 51 becomes a structure which forms the opening part 52 on the one hand, and is connected with the blower 26 on the other hand. Due to the suction action of the blower 26, the air in the internal space 23 a of the housing 23 flows into the flow path 51 of the hollow pedestal 50 from the opening 52, and the air flows through the flow path 51 and is sucked into the blower 26.

  The blower 26 is connected to an exhaust line L <b> 1 for taking out the sucked air to the outside of the housing 23. The exhaust line L1 joins with an exhaust gas line L2 that exhausts exhaust gas from the power generation unit 21 generated along with power generation, and is connected to the exhaust pipe 31. Thus, the air exhaust path from the blower 26 can be shared with the exhaust gas path of the system. However, the exhaust line L1 and the exhaust gas line L2 may not be merged and may be exhausted from the respective pipes. In the embodiment shown in FIG. 2, the exhaust pipe 31 is surrounded by the air supply pipe 32 in order to increase heat exchange efficiency. However, the present invention is not limited to this, and may be provided as separate pipes. Good. Alternatively, the blower 26 may be connected to a supply line L3 for supplying the sucked air to the cathode 13 of the cell stack 5 instead of the exhaust line L1. As a result, the blower 26 can function as the oxidant supply unit 9. Alternatively, both the exhaust line L1 and the supply line L3 may be provided and switched to either one of the lines.

  Next, a specific configuration of the hollow pedestal 50 will be described with reference to FIGS. 3 and 4. The hollow pedestal 50 is a hollow box having a flat rectangular parallelepiped shape, and includes an upper wall 50a, a lower wall 50b, side walls 50c and 50d, and end walls 50e and 50f. The power generation unit 21 is placed on the upper surface of the upper wall 50a.

  Two openings 52 are formed at the corner between the upper wall 50a and the side wall 50c. Two openings 52 are formed at the corner between the upper wall 50a and the side wall 50d. Two openings 52 are formed at the corner between the lower wall 50b and the side wall 50c. Two openings 52 are formed at the corner between the lower wall 50b and the side wall 50d. An opening 53 is formed in the end wall 50 e, and the opening 53 is connected to a connection pipe 27 that extends toward the blower 26. These openings 52 and 53 are connected to the flow path 51 inside the hollow pedestal 50. The opening 52 functions as an air inlet that draws air in the internal space 23 a of the housing 23 into the flow path 51 in the hollow pedestal 50. The opening 52 on the side of the upper wall 50 a is open toward the upper region in the internal space 23 a of the housing 23 where the power generation unit 21 is disposed, and is formed at a position where the power generation unit 21 is not blocked. ing. The opening 52 on the lower wall 50b side opens toward a lower area in the internal space 23a of the housing 23 where the power conditioner 10 and the auxiliary module 22 are arranged. The power conditioner 10 and the auxiliary machine It is formed at a position that is not blocked by the module 22 or the like. The opening 53 functions as an exhaust port for discharging the air in the flow path 51 to the blower 26 side.

  As long as the hollow pedestal 50 has the flow path 51 and has a heat insulating function, the configuration is not particularly limited, and various configurations can be adopted. For example, in FIG. 4A, the hollow pedestal 50 is completely hollow inside, and an internal space 61 is formed. That is, inside the hollow pedestal 50, an internal space 61 is formed surrounded by the upper wall 50a, the lower wall 50b, the side walls 50c and 50d, and the end walls 50e and 50f. The air in the housing 23 is sucked from the opening 52 and flows into the internal space 61, passes through the internal space 61, and is sucked by the blower 26 through the opening 53. Thus, the internal space 61 functions as the flow path 51. Moreover, the internal space 61 functions also as a heat insulation layer by forming an air layer.

  4B, the hollow pedestal 50 has a plurality of layers of internal spaces 62, 63, 64 by partition walls 71, 72 that partition the internal space. Inside the hollow pedestal 50, there are an upper space 50a, side walls 50c, 50d, end walls 50e, 50f, an inner space 62 surrounded by a partition wall 71, a lower wall 50b, side walls 50c, 50d, end walls 50e, 50f, and a partition wall 72. The inner space 63 surrounded, and the inner space 64 surrounded by the side walls 50c and 50d, the end walls 50e and 50f, and the partition walls 72 and 73 are formed. The air in the housing 23 is sucked from the opening 52 of the upper wall 50 a and flows into the internal space 62, passes through the internal space 62, and passes through the opening 53 that communicates with the internal space 62. It is sucked into the blower 26. The air in the housing 23 is sucked from the opening 52 of the lower wall 50 b and flows into the internal space 63, passes through the internal space 63, and passes through the opening 53 that communicates with the internal space 63. Through the blower 26. As described above, the internal spaces 62 and 63 function as the flow path 51. The internal spaces 62, 63, 64 also function as heat insulating layers by forming an air layer. In addition, although the example of FIG.4 (b) is three layers, two layers may be sufficient and four layers or more may be sufficient. Moreover, although the opening part 53 for the blower 26 is formed with respect to each of the internal spaces 62 and 63, each internal space 62, 63, and 64 is connected by providing a through-hole in each partition 71,72, One opening 53 may be provided.

  In the example of FIG. 4C, the hollow pedestal 50 is filled with a heat insulating material 66 and has a flow path 51 that communicates each opening 52 and the opening 53 for the blower 26. . For example, the pipe | tube which connects each opening part 52 and the opening part 53 for blowers 26 is provided in the internal space of the hollow base 50, and the heat insulating material 66 is filled into other space. Air in the housing 23 is sucked from the opening 52 and flows into the flow path 51, passes through the flow path 51, and is sucked by the blower 26 through the opening 53. Moreover, the hollow pedestal 50 has a heat insulating function by being filled with the heat insulating material 66.

  Next, the operation and effect of the fuel cell system 1 according to this embodiment will be described.

  In conventional fuel cell systems, the heat from the power generation unit, which is a heating element, exposes auxiliary equipment and power conditioners installed under the pedestal for supporting the power generation unit to high temperatures. There was a possibility of failure. In order to prevent this, for example, by providing a louver etc. in the casing of the fuel cell system (as in the case of a personal computer) and further supplying and exhausting air from the outside by installing a fan, A structure that prevents the temperature from rising is conceivable. However, in such a structure, when trying to maintain the airtightness of the casing itself, the supply and exhaust of the outside air cannot be performed (or the ventilation amount is greatly reduced), so that the temperature inside the casing is reduced. Ascending, the auxiliary equipment and power conditioner are exposed to high temperatures.

  In some cases, a heat exchanger for exhaust heat recovery may be provided in front of the combustion exhaust gas outlet and the exhaust hole of the module. With such a structure, the ventilation air heated by the module is recovered into the hot water storage by the heat exchanger of the exhaust heat recovery system, so that the temperature inside the housing can be prevented from rising. However, in such a structure, since the module is located upstream of the heat exchanger in the flow of ventilation air, it is assumed that the heat removal of the module does not function well if the amount of ventilation air is significantly reduced. The temperature of the auxiliary equipment and the power conditioner rises through the partition plate that partitions the upper part and the lower part of the housing due to the heat from the module, which may affect the operation thereof.

  According to the fuel cell system 1 according to the present embodiment, the hollow pedestal 50 insulates heat from the power generation unit 21 and has the flow path 51 inside. In addition, the flow path 51 forms an opening 52 that opens toward the internal space 23 a of the housing 23 on the one hand, and is connected to the blower 26 that sucks air in the flow path 51 on the other hand. Therefore, when the blower 26 sucks air, the air in the internal space 23 a of the housing 23 is sucked into the flow channel 51 from the opening 52 of the hollow pedestal 50 and passes through the flow channel 51 to the blower 26. Sucked. Thereby, even when the air in the housing 23 is heated by the heat from the power generation unit 21, it is heated from the internal space 23 a of the housing 23 by being sucked by the blower 26 through the hollow pedestal 50. Air can be removed. The hollow pedestal 50 has a function of insulating heat from the power generation unit 21. The hollow pedestal 50 includes, in the housing 23, a region where the power generation unit 21 that generates heat is disposed (in this embodiment, a region above the hollow pedestal 50) and another region (in this embodiment, a hollow space). The region below the pedestal 50) can be thermally separated from the hollow pedestal 50. As a result, it is possible to thermally separate the region where the power generation unit 21 is disposed from the region where the auxiliary machine, the power conditioner 10, and the like in the auxiliary machine module 22 are disposed. By the above, it can prevent that the auxiliary machine in the auxiliary machine module 22 in the housing | casing 23, the power conditioner 10, etc. are exposed to high temperature. In addition, the fuel cell system 1 according to the present embodiment differs from the above-described configuration in which a casing or the like is provided in the casing to supply and exhaust air, and efficiently compensates for while ensuring airtightness in the casing. This prevents the machine and power conditioner from being exposed to high temperatures.

  In the fuel cell system 1 according to the present embodiment, the flow path 51 is preferably configured by internal spaces 61, 62, 63 formed in the hollow pedestal 50. The internal spaces 61, 62, 63 formed in the hollow pedestal 50 can also function as a heat insulating layer by forming an air layer. Accordingly, the flow path 51 itself of the hollow pedestal 50 can function as a heat insulating layer without using a heat insulating material or the like.

  In the fuel cell system 1 according to the present embodiment, the hollow pedestal 50 is disposed between the power generation unit 21, the auxiliary equipment module 22, and the power conditioner 10, and the hollow pedestal 50 is disposed on the power generation unit 21 side (that is, the upper side). ) And an opening 52 that opens toward the auxiliary equipment module 22 and the power conditioner 10 (that is, downward). With such an arrangement, the hollow pedestal 50 has an area where the power generation unit 21 is arranged (an area above the hollow pedestal 50) and an area where auxiliary equipment and a control unit are arranged (an area below the hollow pedestal 50). Can be thermally separated. In addition, the opening 52 that opens toward the power generation unit 21 can efficiently suck the air warmed by the heat generated from the power generation unit 21. Furthermore, the opening 52 that opens toward the auxiliary machine module 22 and the power conditioner 10 can efficiently suck air warmed by heat generated in the auxiliary machine module 22 and the power conditioner 10. Thereby, it is possible to efficiently prevent the auxiliary machine in the auxiliary machine module 22 in the housing 23, the power conditioner 10 and the like from being exposed to high temperatures.

  In the fuel cell system 1 according to this embodiment, the blower 26 can supply the sucked air to the cathode 13 of the cell stack 5 when connected to the supply line L3. Thus, by using the air warmed by the heat in the housing 23 for power generation, the heat removed from the housing 23 can be used effectively.

  Further, in the fuel cell system 1 according to the present embodiment, the blower 26 can discharge the sucked air to the outside of the housing 23 when connected to the exhaust line L1. Thus, by releasing the heat removed from the inside of the housing 23 to the outside, it is possible to efficiently prevent the inside of the housing 23 from becoming high temperature.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments. The present invention is modified without departing from the scope described in the claims or applied to others. It may be.

  For example, in the above-described embodiment, two rectangular openings 52 are formed at each corner of the corner of the upper wall 50a and the corner of the lower wall 50b, but the position, shape, The quantity is not limited. Further, it may be formed only on one of the upper wall 50a and the lower wall 50b. Moreover, it is not limited to the upper wall 50a and the lower wall 50b (or in addition to the upper wall 50a and the lower wall 50b), and may be formed on other wall portions. For example, as in the hollow pedestal 150 shown in FIG. 5, the openings 152 are formed in the side walls 150c and 150d and the end wall 150f (even if the openings are formed in only a part of these walls. It is also possible to suck air in the housing 23 from the opening 152. At this time, the opening 152 can suck air from both the upper region where the power generation unit 21 is disposed and the lower region where the accessory module 22 and the like are disposed.

  Moreover, in the above-mentioned embodiment, although the flat rectangular parallelepiped hollow base was illustrated as a support body of the electric power generation part 21, it is not restricted to this, If it has a flow path and an opening part and has a heat insulation function, Any shape may be employed.

  DESCRIPTION OF SYMBOLS 1 ... Fuel cell module, 5 ... Cell stack, 10 ... Power conditioner (control part), 11 ... Control part, 21 ... Power generation part, 22 ... Auxiliary machine module (auxiliary machine), 23 ... Housing | casing, 23a ... (Housing | casing) 26 ... blower (suction part), 50 ... hollow pedestal (support), 51 ... flow path, 52, 152 ... opening, 61, 62, 63 ... internal space (flow path).

Claims (4)

A power generation unit including a cell stack that generates power using a hydrogen-containing gas;
A support for supporting the power generation unit;
An auxiliary machine as a peripheral device for generating power in the power generation unit;
A controller that adjusts the power generated by the power generation unit or controls the operation of the power generation unit;
A housing that houses at least the power generation unit, the support, the auxiliary device, and the control unit ;
The support is disposed between the power generation unit, the auxiliary device, and the control unit, and opens toward the power generation unit side, and opens toward the auxiliary device and the control unit side. and an opening, as well as insulating the heat from the power generation unit, which incorporates a flow channel, which is connected to a suction unit for sucking the air in those flow passage,
The support includes an internal space in which an opening that opens toward the power generation unit and the suction unit are connected by a partition wall, an opening that opens toward the auxiliary device and the control unit, and the suction. An internal space to which a section is connected, and each of the internal spaces serves as the flow path . A power generation unit including a cell stack that generates power using a hydrogen-containing gas;
A support for supporting the power generation unit;
An auxiliary machine as a peripheral device for generating power in the power generation unit;
A controller that adjusts the power generated by the power generation unit or controls the operation of the power generation unit;
A housing that houses at least the power generation unit, the support, the auxiliary device, and the control unit;
The support is disposed between the power generation unit, the auxiliary device, and the control unit, and opens toward the power generation unit side, and opens toward the auxiliary device and the control unit side. And has an opening, insulates the heat from the power generation unit, has a flow channel inside, and is connected to a suction unit that sucks air in the flow channel,
The support body has a heat insulating material inside, the opening portion opening toward the power generation unit side and the suction unit are connected by the heat insulating material, and the auxiliary machine and the control unit side are connected. The flow path in which the opening that opens toward the opening and the suction portion are connected is provided.
A fuel cell system. The suction unit, the fuel cell system according to claim 1 or 2, characterized in that supplying the sucked air to the cathode of the cell stack. The suction unit, the fuel cell system according to claim 1 or 2, characterized in that out the sucked air to the outside of the housing.

Images