JP2004319346A - Solid polyelectrolyte fuel cell and fuel cell power generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a fuel cell power generating device in which a space for piping connection is reduced and which is compact and has excellent characteristics. <P>SOLUTION: In a solid polyelectrolyte fuel cell of rectangular parallelepiped having a fuel cell section 1 laminating unit cells, the piping joints 7 for supplying and discharging the reaction gas and cooling water are all arranged on one battery side, and a communicating section 2 for circulating the reaction gas and cooling water from the battery side having the piping joints 7 to the opposed battery side through a current collector plate 3 and a partition plate 4 is arranged at one end in the laminating direction of the fuel cell section 1, and the reaction gas and the cooling water flowing inside the fuel cell section 1 are made to flow from the opposed battery side to the battery side having the piping joints 7, and are supplied uniformly to each cell. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a solid polymer electrolyte fuel cell and a fuel cell power generator using the same, and more particularly to a configuration of a solid polymer electrolyte fuel cell capable of obtaining a compact fuel cell power generator.
[0002]
[Prior art]
2. Description of the Related Art A polymer electrolyte fuel cell (PEFC) is a fuel cell using a polymer membrane as an electrolyte, and has excellent features such as a high output density and a long battery life.
FIG. 14 is an exploded cross-sectional view schematically showing the configuration of a general cell of a solid polymer electrolyte fuel cell. Electrodes composed of a catalyst layer 72 and a diffusion layer 73 are arranged on both sides of a solid polymer electrolyte membrane 71 to form a membrane electrode assembly. The membrane electrode assembly is separated from a separator 75 having a gas flow groove 76 and a gas flow assembly. A cell is constituted by being sandwiched between the groove 76A and the separator 75A having the cooling water flow groove 77. In FIG. 14, reference numeral 74 denotes a protective film, and 78 denotes a seal rubber. FIG. 15 is a plan view schematically showing the fuel gas flow path of the fuel electrode side separator incorporated in the cell. The separator 21 has a fuel inlet manifold 24 shown at the lower left in FIG. A meandering fuel gas flow path 22 for guiding the fuel to the fuel outlet manifold 25 is provided. The other four manifolds shown in FIG. 15 are an air inlet manifold and an air outlet manifold for supplying and discharging air, and a cooling water inlet manifold and a cooling water outlet manifold for supplying and discharging cooling water.
[0003]
FIG. 16 is a perspective view showing a general configuration of a conventional solid polymer electrolyte fuel cell. The fuel cell unit 1 is formed by laminating a large number of single cells having the configuration shown in FIG. A current collecting plate 3, a distribution plate 5, and a clamping plate 6 are sequentially disposed on both end surfaces in the stacking direction of the fuel cell unit 1, and an end plate 9 is disposed outside the clamping plate 6 with a coil spring 8 interposed therebetween. Have been.
The current collector plate 3 is used to extract the current generated by the power generation reaction in the fuel cell unit 1 to the outside. The current collector plate 3 is formed of a good conductive metal such as gold-plated copper, for example. A current collector terminal 3a for connecting a cable is protrudingly provided. The distribution plate 5 is a component provided with a pipe joint 7 for supplying and discharging a reaction gas and cooling water supplied to the fuel cell unit 1 or a reaction gas and cooling water discharged from the fuel cell unit 1. The distribution plate 5 is made of resin such as PTFE resin, and also plays a role of electrically insulating the fuel cell unit 1 from the outside. In the distribution plate 5 arranged at the upper left of the fuel cell unit 1 in FIG. 16, the pipe joint 7 is arranged on the rear side (upper right side).
[0004]
Further, in the present configuration, in order to suppress the contact resistance between the separator of the single cell of the fuel cell unit 1 and the diffusion layer and the contact resistance between the single cells, the fuel cell unit 1, the current collecting plate 3, the distribution plate 5 is tightened by applying a constant load by a tightening plate 6, a coil spring 8 and an end plate 9. In addition, 10 shown in FIG. 16 is a voltage monitor line, and 11 is a temperature monitor line. The voltage monitor line 10 is made of, for example, a copper wire having a SUS304 wire-like terminal at the tip, and the voltage is detected by attaching the wire-like terminal to a separator. The temperature monitor wire 11 is, for example, a conductive wire having a K thermocouple at the tip, and the temperature is detected by attaching the K thermocouple to the separator.
[0005]
FIG. 17 is a front view of the conventional solid polymer electrolyte fuel cell shown in FIG. 16 as viewed from an end plate. As shown in FIG. 17, in this configuration, the current collector plate terminal 3a for connecting the load current cable to the pipe joint 7 for supplying and discharging the reaction gas and the cooling water protrudes from the left side surface of the fuel cell stack. The pipe joint 7 is arranged so as to protrude from the right side surface.
FIG. 18 is a perspective view schematically showing the flow of fuel inside the fuel cell unit 1 of the conventional solid polymer electrolyte fuel cell shown in FIG. 16, and FIG. 19 is viewed from the top side of the fuel cell. It is a schematic diagram of a fuel flow. The fuel supplied from the fuel inlet of the pipe joint 7 of the distribution plate 5 shown on the right side in FIG. 19 is sent to the fuel cell unit 1 and flows through the fuel inlet manifold in the stacking direction of the cells. , And reaches the fuel outlet manifold 25, and is discharged to the outside from the fuel outlet of the pipe joint 7 provided on the opposite surface of the distribution plate 5 shown on the left side in FIG.
[0006]
FIG. 20 is a plan view schematically showing a configuration of a fuel cell power generator incorporating the above-mentioned conventional solid polymer electrolyte fuel cell. As shown in the figure, in addition to the solid polymer electrolyte fuel cell 61, a reformer 62 used for fuel reforming, a pump 63, a blower 64, a cooling water tank 65, and a control circuit for controlling these operations are provided. The fuel cell power generator is housed in the same housing.
As described above, in the conventional solid polymer electrolyte fuel cell, the configuration as shown in FIG. 16 has been generally adopted, but in this configuration, the pipe joints are arranged on both sides, so Including the required space for the piping to be performed, it is necessary to provide a large amount of space on the side surface of the fuel cell. For this reason, if this fuel cell is incorporated in a casing together with a reformer, etc., to constitute a fuel cell power generator, there is a disadvantage that a large casing and a large space are required, and a solid polymer having a more compact constitution is required. There is a need for the development of an electrolyte fuel cell.
[0007]
The solid polymer electrolyte fuel cell disclosed in Patent Document 1 is a fuel cell developed with the aim of a compact configuration, and supplies fuel, air and cooling water from one end face in the cell stacking direction. By sending it to the battery unit and discharging the fuel, air and cooling water after the single cell has flowed out from the same end face, the pipe joints requiring pipe connection are limited to one end face in the cell stacking direction, and the pipe connection is involved. The required space is reduced.
[0008]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-67901
[Problems to be solved by the invention]
As in the case of the solid polymer electrolyte fuel cell disclosed in Patent Document 1, the piping joint for supplying and discharging fuel, air, and cooling water may be arranged only on one end face in the stacking direction of the cells. Since the pipe connection is limited to only one space, the space required for the entire solid polymer electrolyte fuel cell is reduced, and the fuel cell power generator can be made compact.
However, the solid polymer electrolyte fuel cell configured as described above still has the following problems.
[0010]
That is, in the fuel cell having the supply port and the discharge port of the fuel, the air, and the cooling water at one end face in the stacking direction of the cells, the fuel supplied from the fuel inlet is, as illustrated in FIG. The fuel flows from the inlet manifold located at the upper part in the drawing in parallel through the fuel circulation grooves provided in the separators of the plurality of cells, and reaches the outlet manifold located at the lower part in the figure, and then the fuel outlet Although the fuel in the manifold on the inlet side and the fuel in the manifold on the outlet side flow in opposite directions, the static pressure distribution in the manifold becomes uneven, and the pressure loss in each cell is shown in FIG. As described above. Therefore, in the case where the separator is provided with a flow groove having the same flow path cross-sectional area, there is a problem that the flow rate of the fuel varies from cell to cell, and the battery characteristics deteriorate. As a solution to this difficulty, Patent Document 1 discloses a structure in which the cross-sectional area of the manifold is gradually changed in the cell stacking direction. Since it is necessary to process manifolds having different cross-sectional areas on the separators of the cells to be stacked, there is a disadvantage that processing costs are high.
[0011]
Further, in a fuel cell configured by stacking a plurality of single cells, it is necessary to incorporate a pressure tightening mechanism such as a coil spring in order to reduce the internal contact resistance. If a configuration is adopted in which all the pipe joints are attached to one end face in the stacking direction of the cells, there is a problem that it is difficult to incorporate these pressure tightening mechanisms.
The present invention has been made in consideration of the current state of the art and problems as described above, and an object of the present invention is to connect a supply pipe and a discharge pipe for reactant gas and cooling water supplied to a fuel cell unit. It is an object of the present invention to provide a solid polymer electrolyte fuel cell capable of constructing a fuel cell power generation device that requires a small space, is compact, and has excellent cell characteristics.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, in the present invention,
In a cuboid solid polymer electrolyte fuel cell including a fuel cell unit configured by stacking a plurality of single cells each including a solid polymer electrolyte body, an electrode, and a separator, (1) fuel and air are added to the fuel cell unit. The piping for supplying and discharging the cooling water is provided only on one of the battery side surfaces orthogonal to the stacking direction of the single cells.
(2) In the solid polymer electrolyte fuel cell according to the above (1), the second cell in which the single cell of the fuel cell section is opposed to the manifold adjacent to the side of the first cell provided with the pipe is provided. The fuel cell unit further includes a separator having a groove through which fuel, air, or cooling water flows from a manifold adjacent to the side surface of the fuel cell. A communication portion having a flow path for allowing fuel, air, or cooling water to flow from the adjacent manifold to the manifold adjacent to the second battery side surface is provided via a current collector or a current collector and a partition plate. Further, the above-mentioned current collector plate or the current collector plate and the partition plate are moved from the manifold adjacent to the second battery side surface of the communication portion to the manifold adjacent to the second battery side surface of the fuel cell portion. Re and comprise a flowing hole for flow through the fuel and air and the cooling water.
[0013]
(3) Further, in the above (2), a separator having a groove through which fuel, air or cooling water flows from the manifold adjacent to the first battery side to the manifold adjacent to the second battery side. Are stacked and configured.
(4) In the solid polymer electrolyte fuel cell according to the above (3), the water permeable membrane is sandwiched between the separator having the fuel or air flow path and the separator having the cooling water flow path in the communicating portion. Humidifier plate.
(5) In the solid polymer electrolyte fuel cell according to any one of (1) to (4), a voltage monitor line for detecting a voltage of the fuel cell unit, a battery temperature monitor line for detecting a temperature of the fuel cell unit, A current collector terminal for taking out the electric power generated by the fuel cell unit to the outside is provided on the side surface of the first cell.
[0014]
According to the above (1), the supply and discharge pipes for the reaction gas and the cooling water are concentrated on one side of the battery, so that a space for connecting the pipes is provided on the opposite side. There is no need to provide the device, and a compact configuration can be realized.
Further, in the case of (2) or (3) above, the reaction gas and the cooling water flow through the manifold adjacent to the first cell side surface of the fuel cell unit and the manifold adjacent to the second cell side surface of the fuel cell unit. Since the gas flows in the same direction, the reaction gas and the cooling water flow uniformly in the grooves of the separators of the plurality of single cells, so that excellent battery characteristics can be obtained.
[0015]
Further, according to the above (4), since the fuel or air humidified by the humidifying plate is supplied to the fuel cell unit, the solid polymer electrolyte membrane of the single cell is kept wet, and excellent cell characteristics are obtained. Driving becomes possible.
Further, in the case of the above (5), since there is no protrusion on the side surface of the second cell, a compact fuel cell power generator can be effectively constituted.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a configuration of an embodiment of a solid polymer electrolyte fuel cell according to the present invention. FIG. 2 is a plan view of the solid polymer electrolyte fuel cell as viewed from above in FIG. 1, and FIG. 3 is a front view as viewed from the lower right side of FIG.
The first difference between the configuration of the present embodiment and the conventional configuration example shown in FIG. 16 is that, of the two end surfaces in the stacking direction of the fuel cell unit 1 formed by stacking a large number of single cells, Flow of fuel, air, or cooling water from the manifold close to one battery side to the manifold close to the other battery side between the current collector plate 3 and the distribution plate 5 at the lower right end face A communication part 2 to be formed and a resin partition plate 4 for suppressing heat radiation from the fuel cell part 1 to the communication part 2 are incorporated.
[0017]
The second difference is that the pipe joints 7 for supplying and discharging the fuel, air and cooling water connected to the distribution plate 5 are all arranged on one battery side, that is, on the lower left side in the figure. Further, the current collector terminal 3a of the current collector 3, the voltage monitor line 10, and the temperature monitor line 11 are also arranged on the side surface of the battery.
Since the pipe joint 7, the current collector plate terminal 3a, the voltage monitor line 10, and the temperature monitor line 11 are all arranged on one side of the battery, the battery facing the side of the battery as shown in FIGS. The sides are flat and have no protrusions, and there is no need to provide a working space. Therefore, in the case where the solid polymer electrolyte fuel cell of the present configuration is housed in a housing to form a fuel cell power generator, the opposed flat cell sides can be arranged close to the housing. .
[0018]
In this embodiment, the voltage monitor line 10 and the temperature monitor line 11 are also connected to the same side surface as the pipe joint 7. However, since these monitor lines are small and require less space than the pipe joint 7 and the like. Alternatively, it may be provided on another side according to the wiring convenience.
FIG. 4 is a longitudinal sectional view schematically showing a configuration of a fuel communication cell incorporated in the communication section 2 of the solid polymer electrolyte fuel cell of the present embodiment, and FIG. 5 is incorporated in the fuel communication cell. It is the top view which showed typically the fuel gas flow path of a separator. The separator 21A constituting the fuel communication cell is provided with a fuel inlet manifold 24A at a position close to the cell side surface where the pipe joint 7 is arranged, and a fuel outlet manifold 25A at a position close to the opposing cell side surface. In the meantime, a groove forming the fuel flow path 22 is provided. The fuel supplied through the pipe joint 7 is sent from the distribution plate 5 to the fuel inlet manifold 24A, flows through the fuel passage 22, and reaches the fuel outlet manifold 25A.
[0019]
FIG. 6 is a vertical cross-sectional view schematically showing a configuration of an air / cooling water communication cell having a function of a humidifying plate incorporated in the communication section 2 of the solid polymer electrolyte fuel cell of the present embodiment. As shown in the figure, the humidifying plate includes a water permeable membrane 51 supported on both sides by a porous substrate 52, a separator 31A having a groove for forming an air passage 32, and a groove for forming a cooling water passage 42. The air flowing through the air flow path 32 is humidified by moisture that permeates through the water permeable membrane 51 and penetrates.
FIGS. 7, 8, and 9 are perspective views schematically showing flows of fuel, air, and cooling water in the communication section 2 and the fuel cell section 1 of the solid polymer electrolyte fuel cell of the present embodiment. FIG. As shown in FIG. 7, the fuel is distributed from the fuel inlet manifold 24 </ b> A disposed close to the side of the battery where the pipe joint 7 of the separator 21 </ b> A of the communication portion 2 is disposed to a position close to the opposite side of the cell. After flowing through the fuel flow passage 22 to the fuel outlet manifold 25A, the fuel is supplied to the fuel inlet manifold 24 of the separator 21 of the fuel cell unit 1 through the through holes provided in the partition plate 4 and the current collecting plate 3. Then, the fuel gas flows through the fuel flow path 22 and reaches the fuel outlet manifold 25 arranged at a position close to the side surface of the cell where the pipe joint 7 is arranged. Similarly, as shown in FIG. 8, the air is introduced from the air inlet manifold 34A of the separator 31A of the communication portion 2, flows through the air flow path 32, is humidified, reaches the air outlet manifold 35A, and is separated by the partition plate. The fuel cell 4 is sent to the air inlet manifold 34 of the separator 31 of the fuel cell unit 1 through the flow holes of the current collector plate 3, flows through the air flow path 32, and is guided to the air outlet manifold 35. Further, as shown in FIG. 9, the cooling water is sent from the cooling water inlet manifold 44A of the separator 41A of the communicating portion 2 to the cooling water outlet manifold 45A, and then the flow holes of the partition plate 4 and the current collecting plate 3 are formed. Through the cooling water inlet manifold 44 of the separator 41 of the fuel cell unit 1, and is sent to the cooling water outlet manifold 45 through the cooling water passage 42.
[0020]
FIG. 10 is a plan view schematically showing the flow of fuel in the solid polymer electrolyte fuel cell according to the present embodiment. The fuel supplied from the fuel inlet of the pipe joint flows through the fuel flow path of the communication section 2 and is sent to the manifold located on the back side (upper side in the figure), and the fuel cell section 1 has the inlet located on the back side. The fuel flows from the side manifold to the outlet side manifold located on the side of the battery (lower side in the figure) where the pipe joint is arranged, so that the fuel flows between the inlet side manifold and the outlet side manifold of the fuel cell unit 1. Are in the same direction. Therefore, the pressure loss in the fuel flow path 22 in each cell stacked in the fuel cell unit 1 becomes uniform as shown in FIG. 11, so that fuel can be uniformly supplied to each cell. In the configuration of the present embodiment, as shown in FIGS. 8 and 9, air and cooling water also flow in one direction in the fuel cell unit 1 from the back side to the side of the cell where the pipe joint is arranged. With this configuration, air and cooling water are also uniformly supplied to each cell, and excellent battery characteristics can be obtained.
[0021]
FIG. 12 is a plan view schematically showing a configuration of a fuel cell power generator incorporating the solid polymer electrolyte fuel cell of the present embodiment. The components shown in this figure are the same as the components of the conventional fuel cell power generator shown in FIG. 20, and duplicate description will be omitted.
As described above, the solid polymer electrolyte fuel cell of this configuration is configured by arranging pipe joints, current collector terminals, voltage monitor lines, temperature monitor lines, etc. all on one side of the battery. Opposing battery sides are flat and have no protrusions, and there is no need to provide a work space. Therefore, as shown in FIG. 12, the fuel cell power generation device can be configured by bringing the flat side surface of the battery without protrusions close to the housing, and a fuel cell power generation device having a compact configuration can be obtained.
[0022]
In the solid polymer electrolyte fuel cell of the embodiment described above, a humidifying plate for humidifying the air is incorporated in the communicating portion, but a humidifying plate for humidifying the fuel may be incorporated. And a humidifying plate for humidifying the fuel may be incorporated together. Further, depending on the use conditions, no humidifying plate may be incorporated.
FIG. 13 is a plan view schematically showing a fuel flow in another embodiment of the solid polymer electrolyte fuel cell of the present invention.
The present embodiment has a flow passage hole for allowing fuel, air, or cooling water to flow from the manifold adjacent to the first battery side to which the pipe joint is connected, to the manifold adjacent to the opposite second battery side. This is an example of a solid polymer electrolyte fuel cell configured using the distribution plate 5A as a communication part. Since the pipe joints are all provided on the first cell side surface, the working space is similar to that of the first embodiment. A limited and compact fuel cell power generator can be configured. Also in this configuration, since the fuel flowing through the fuel cell unit 1 flows through the inlet manifold and the outlet manifold in the same direction, the fuel flows evenly in each cell, and excellent cell characteristics can be obtained.
[0023]
【The invention's effect】
As described above, according to the present invention,
A cuboid solid polymer electrolyte fuel cell comprising a fuel cell unit formed by stacking a plurality of single cells each composed of a solid polymer electrolyte body, an electrode, and a separator. 3, the space required for the supply of the reaction gas and cooling water to be supplied to the fuel cell unit and the connection of the discharge pipe is reduced, and the reaction gas and cooling are uniformly provided in each single cell. Water can be supplied, and a solid polymer electrolyte fuel cell capable of forming a compact fuel cell power generator having excellent cell characteristics can be obtained.
[0024]
Further, according to the fourth aspect, since the solid polymer electrolyte membrane can be operated while being kept wet, a compact fuel cell power generator having excellent cell characteristics can be configured. It is suitable as a solid polymer electrolyte fuel cell.
[Brief description of the drawings]
FIG. 1 is a perspective view showing the configuration of an embodiment of a solid polymer electrolyte fuel cell according to the present invention. FIG. 2 is a plan view of the solid polymer electrolyte fuel cell according to the present embodiment viewed from above in FIG. 3 is a front view of the solid polymer electrolyte fuel cell of this embodiment as viewed from the lower right side of FIG. 1; FIG. 4 is a fuel communication incorporated in the flow section 2 of the solid polymer electrolyte fuel cell of this embodiment. FIG. 5 is a longitudinal sectional view schematically showing the structure of a cell. FIG. 5 is a plan view schematically showing a fuel gas flow path of a separator incorporated in the fuel communication cell shown in FIG. 4. FIG. FIG. 7 is a longitudinal sectional view schematically showing a configuration of an air / cooling water communication cell having a function of a humidifying plate incorporated in the circulation section 2 of the polymer electrolyte fuel cell. FIG. 7 is a solid polymer electrolyte fuel cell of the present embodiment. FIG. 8 is a perspective view schematically showing the flow of fuel inside the circulation section 2 and the fuel cell section 1 of FIG. FIG. 9 is a perspective view schematically showing the flow of air inside the solid polymer electrolyte fuel cell of the example and the inside of the fuel cell unit 1. FIG. 9 is a diagram showing the flow of the solid polymer electrolyte fuel cell of the present embodiment. FIG. 10 is a perspective view schematically showing the flow of cooling water inside the fuel cell unit 2 and the inside of the fuel cell unit 1. FIG. 10 is a plan view schematically showing the flow of fuel in the solid polymer electrolyte fuel cell of this embodiment. 11 is a characteristic diagram showing a pressure loss distribution of a fuel flow for each cell in the solid polymer electrolyte fuel cell of the present embodiment. FIG. 12 is a fuel cell power generation incorporating the solid polymer electrolyte fuel cell of the present embodiment. FIG. 13 is a plan view schematically showing the configuration of the device. FIG. 13 is a plan view schematically showing the flow of fuel in another embodiment of the solid polymer electrolyte fuel cell of the present invention. The general structure of a fuel cell is shown schematically. FIG. 15 is a plan view schematically showing a fuel gas flow path of a fuel electrode side separator of the cell of FIG. 14. FIG. 16 shows a general configuration example of a conventional solid polymer electrolyte fuel cell FIG. 17 is a front view of the conventional solid polymer electrolyte fuel cell of FIG. 16 viewed from the end plate side. FIG. 18 is a fuel inside the fuel cell portion of the conventional solid polymer electrolyte fuel cell of FIG. FIG. 19 is a perspective view schematically showing the flow of fuel. FIG. 19 is a schematic view of the flow of fuel as viewed from the upper surface side of the conventional solid polymer electrolyte fuel cell of FIG. 16. FIG. 20 is the conventional solid polymer of FIG. FIG. 21 is a plan view schematically showing a configuration of a fuel cell power generator incorporating an electrolyte fuel cell. FIG. 21 is a schematic view of a fuel flow in another conventional solid polymer electrolyte fuel cell. FIG. Per cell in other conventional solid polymer electrolyte fuel cells Diagram showing pressure loss distribution of the fuel flow in the water [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fuel cell part 2 Distribution part 3 Current collector plate 3a Current collector plate terminal 4 Partition plate 5 Distribution plate 6 Tightening plate 7 Piping joint 8 Coil spring 9 End plate 10 Voltage monitor line 11 Temperature monitor line

Claims (6)

In a cuboid solid polymer electrolyte fuel cell including a fuel cell unit configured by stacking a plurality of single cells each including a solid polymer electrolyte body, an electrode, and a separator, fuel, air, and cooling water are added to the fuel cell unit. A solid polymer electrolyte fuel cell, wherein each of the pipes for supplying and discharging is provided only on one of the battery side faces orthogonal to the stacking direction of the single cells. 2. The solid polymer electrolyte fuel cell according to claim 1, wherein a single cell of the fuel cell unit is adjacent to a second cell side facing a manifold adjacent to the first cell side provided with the pipe. 3. A separator having a groove through which fuel, air, or cooling water flows from the manifold; and A communication portion having a flow path for allowing fuel, air, or cooling water to flow to the manifold adjacent to the side surface of the battery 2 is provided via a current collecting plate or a current collecting plate and a partition plate; and The current collector plate or the current collector plate and the partition plate, respectively, from the manifold adjacent to the second battery side surface of the communication portion to the manifold adjacent to the second battery side surface of the fuel cell portion. A solid polymer electrolyte fuel cell, characterized in that is provided with a flowing hole for introducing the charge and the air and the cooling water. 3. The solid polymer electrolyte fuel cell according to claim 2, wherein the communication portion flows fuel, air, or cooling water from a manifold close to the first battery side to a manifold close to the second battery side. 4. A solid polymer electrolyte fuel cell comprising a plurality of cells provided with a separator having a groove to be formed. 4. The humidifier plate according to claim 3, wherein a water-permeable membrane is sandwiched between said separator having a fuel or air flow path and a separator having a cooling water flow path in said communication portion. A solid polymer electrolyte fuel cell, comprising: The solid polymer electrolyte fuel cell according to any one of claims 1 to 4, wherein a voltage monitor line for detecting a voltage of the fuel cell unit, a battery temperature monitor line for detecting a temperature of the fuel cell unit, and a fuel cell unit. A solid polymer electrolyte fuel cell, wherein a current collector terminal for taking out the generated power to the outside is provided on a side surface of the first cell. A fuel cell power generator comprising the solid polymer electrolyte fuel cell according to any one of claims 1 to 5 housed in a housing.

Images