JP2005190858A - Fuel cell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell, wherein fuel gas and oxidizer gas can be supplied, and the fuel gas including generated water and the oxidizer gas can be exhausted, without causing nonconformities, even if a stack is rotated. <P>SOLUTION: This fuel cell has a rotating shaft 21, extending in the laminated direction of cells at the cell center part in the direction of the cell face, and a fuel cell stack 12 is made rotatable, together with the rotation shaft. In this fuel cell 10, a passage 23 for supplying the fuel gas to the cells and a passage 22 for supplying the oxidizer gas to the cells are provided in the rotating shaft 21. In addition, a fuel cell in which an exhaust outlet 27 for exhausting the fuel gas from the cells and an exhaust outlet 28 for exhausting the oxidizer gas from the cells are provided on the faces of the fuel cell stack 12 in mutually different directions is included. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fuel cell having a rotary stack.

Japanese Patent Application Laid-Open No. 2002-208423 discloses a fuel cell having a rotating shaft extending in the cell stacking direction at a cell central portion in the cell in-plane direction and a fuel cell stack being rotatable with the rotating shaft. There, when flooding occurs or when operating conditions are likely to occur, the fuel cell stack is rotated integrally with the rotating shaft, and centrifugal force is applied to the generated water that attempts to close the gas flow path. It encourages the discharge of water from the road.
JP 2002-208423 A

However, in a conventional stack rotating fuel cell, simply connecting a hose or electric wire to the rotating stack will wrap around the stack,
(A) How to supply fuel gas and oxidant gas to the rotating fuel cell stack, and how to discharge fuel gas and oxidant gas including generated water,
(B) How to extract the generated power from the rotating fuel cell stack,
There is a problem such as, and a solution is desired.

A first object of the present invention is to provide a fuel cell capable of supplying fuel gas and oxidant gas without causing problems even when the stack is rotated, and discharging fuel gas and oxidant gas including generated water. Is to provide.
A second object of the present invention is to provide a fuel cell capable of achieving the first object and capable of taking out generated power without causing any trouble even when the stack is rotated.

The present invention for achieving the above object is as follows.
(1) A fuel cell having a rotating shaft extending in the cell stacking direction at the center of the cell in the cell in-plane direction, and the fuel cell stack being rotatable with the rotating shaft, and a fuel gas supply passage to the cell; The fuel cell which provided the supply path to the cell of oxidizing gas in the said rotating shaft.
(2) The fuel cell according to (1), wherein the fuel gas supply passage to the cell and the oxidant gas supply passage to the cell are separated from each other by a separation wall in the rotation shaft.
(3) The fuel cell according to (1), wherein an outlet from the fuel gas cell and an outlet from the oxidant gas cell are provided on surfaces of the fuel cell stack in different directions.
(4) The outlet of the fuel gas from the cell is substantially parallel to the direction in which the rotating shaft extends, and the outlet of the oxidant gas from the cell is substantially perpendicular to the direction in which the rotating shaft extends (3) The fuel cell as described.
(5) A fixed casing surrounding the rotatable fuel cell stack is provided, and a fuel gas outlet for guiding the fuel gas discharged from the discharge port of the fuel gas to the outside of the casing is formed in the casing. The fuel cell according to (3), wherein an oxidant gas outlet for guiding the oxidant gas discharged from the discharge port of the oxidant gas from the cell to the outside of the casing is formed.
(6) The fuel cell stack has clamping plates that can be rotated together with the fuel cell stack at both ends of the cell stacking direction, the clamping plate at one end is an anode, the clamping plate at the other end is a cathode, and one of the anode and the cathode is fixed. The fuel cell according to (1), wherein the other of the anode and the cathode is electrically connected to the fixed power extraction means so as to be relatively rotatable.
(7) The fuel cell according to (6), wherein the other of the anode and the cathode is electrically connected to a part of the rotating shaft, and the power take-out means has a sliding portion that is in sliding contact with a part of the rotating shaft. .
(8) A fuel cell having a rotating shaft extending in the cell stacking direction at the center of the cell in the cell in-plane direction, and the fuel cell stack being rotatable with the rotating shaft, and a discharge port of fuel gas from the cell; A fuel cell in which exhaust ports from cells of oxidant gas are provided on surfaces of the fuel cell stack in different directions.
(9) The discharge port of the fuel gas from the cell is substantially parallel to the direction in which the rotation axis extends, and the discharge port from the cell of the oxidant gas is substantially perpendicular to the direction in which the rotation axis extends (8). The fuel cell as described.
(10) A fixed casing surrounding the rotatable fuel cell stack is provided, and a fuel gas outlet for guiding the fuel gas discharged from the discharge port of the fuel gas to the outside of the casing is formed in the casing. The fuel cell according to (8), wherein an oxidant gas outlet for guiding the oxidant gas discharged from the discharge port of the oxidant gas from the cell to the outside of the casing is formed.
(11) A fuel cell having a rotation axis extending in the cell stacking direction at a cell central portion in a cell in-plane direction, and the fuel cell stack being rotatable together with the rotation shaft, wherein both ends of the fuel cell stack in the cell stacking direction A clamping plate that can be rotated together with the fuel cell stack, the clamping plate at one end is an anode and the clamping plate at the other end is a cathode, and one of the anode and the cathode is electrically connected to a fixed ground so as to be relatively rotatable, and the anode A fuel cell in which the other of the cathode and the cathode is connected to a fixed power extraction means so as to be relatively rotatable.
(12) The fuel cell according to (11), wherein the other of the anode and the cathode is electrically connected to a part of the rotating shaft, and the power take-out means has a sliding portion that is in sliding contact with a part of the rotating shaft. .

According to the fuel cell of the above (1), since both the supply passage to the fuel gas cell and the supply passage to the oxidant gas cell are provided in the rotating shaft, only the oxidant gas passage in the cell surface is provided. In addition, the moisture in the fuel gas passage can be moved radially outward by the centrifugal force acting on the water, and the discharge can be promoted. Further, the supply of the fuel gas to the fuel gas supply passage in the rotation shaft and the supply of the oxidant gas to the oxidant gas supply passage in the rotation shaft are both performed to the gas supply passage in the rotation shaft rotating around the rotation shaft core. Therefore, the gas can be supplied from a fixed bearing support member that supports the rotating shaft via a bearing. The gas supply port provided in the bearing support member does not rotate with the rotating shaft, and gas can be supplied without causing entanglement with the rotating shaft such as a hose.
According to the fuel cell of the above (2), the fuel gas supply passage to the cell and the oxidant gas supply passage to the cell in the rotating shaft are separated from each other by the separation wall in the rotating shaft. The supply passages for the gas and the oxidant gas can be made independent of each other, and mixing of the fuel gas and the oxidant gas can be prevented.

According to the fuel cells of the above (3) and (8), since the exhaust port from the fuel gas cell and the exhaust port from the oxidant gas cell are provided on the surfaces of the fuel cell stack in different directions, It becomes easy to adopt a structure that prevents mixing of the fuel gas discharged from the battery stack and the oxidant gas.
According to the fuel cells of the above (4) and (9), the discharge port from the fuel gas cell is substantially parallel to the direction in which the rotation axis extends, and the discharge port from the oxidant gas cell extends in the direction in which the rotation shaft extends. Therefore, the oxidant gas flow path with a large amount of generated water can be opened outward in the radial direction, and blockage of the oxidant gas flow path by the generated water can be effectively suppressed.
According to the fuel cells of the above (5) and (10), the fuel gas outlet for guiding the fuel gas discharged from the discharge port of the fuel gas to the outside of the casing is fixed to the fixed casing surrounding the fuel cell stack. Since the oxidant gas outlet that guides the oxidant gas discharged from the discharge port of the oxidant gas to the outside of the casing is formed, the gas outlet can be fixed to the fuel cell stack such as a hose. Gas can be discharged without causing entanglement.

According to the fuel cells of (6) and (11) above, there are clamping plates that can rotate together with the fuel cell stack at both ends in the cell stacking direction of the fuel cell stack, the clamping plate at one end is the anode, and the clamping plate at the other end is Since it is a cathode and one of the anode and the cathode is connected to a fixed ground so as to be relatively rotatable, and the other of the anode and the cathode is connected to a fixed power extraction means so as to be relatively rotatable, even if the fuel cell stack rotates Since the ground and the power take-out means are fixed, the power of the fuel cell can be taken out without causing the wire to wrap around the stack.
According to the fuel cells of the above (7) and (12), the other of the anode and the cathode is electrically connected to a part of the rotating shaft, and the sliding portion where the power extraction means slides and contacts the part of the rotating shaft. Therefore, even if the other of the anode and the cathode rotates, power can be taken out by sliding contact between the rotating shaft and the sliding portion.

Below, the fuel cell of this invention is demonstrated with reference to FIGS.
1 to 3 show a fuel cell 10 of the present invention, and FIGS. 4 and 5 show a test apparatus for evaluating the fuel cell of the present invention. A part of the apparatus shown in FIGS. 4 and 5 may be used as a part of the fuel cell 10 of the present invention. Parts corresponding to those in the apparatus of FIGS. 1 to 3 and the apparatuses of FIGS. 4 and 5 are denoted by the same reference numerals.

The fuel cell 10 of the present invention is a stacked solid polymer electrolyte fuel cell. The fuel cell 10 is mounted on, for example, a fuel cell vehicle. However, it may be used other than an automobile. As shown in FIGS. 1 to 5, the fuel cell 10 of the present invention includes a fuel cell stack 12 in which unit fuel cells (cells) 11 that can be rotated are stacked, and a drive device 13 that rotates the fuel cell stack 12. Have.
The fuel cell 10 is desirably arranged with the cell stacking direction being substantially horizontal. However, the cell stacking direction may be other than the horizontal direction.

The unit fuel cell 11 is composed of a membrane-electrode assembly 14 (also referred to as Membrane-Electrode Assembly, MEA) and a separator 15 stacked together. The MEA 14 includes an electrolyte membrane 16, an anode 17 formed on one surface of the electrolyte membrane, and a cathode 18 formed on the other surface of the electrolyte membrane. A diffusion layer may be inserted between the MEA 14 and the separator 15. A separator 15 disposed on the anode side of the MEA 14 is provided with a fuel gas passage 19 for supplying fuel gas (for example, hydrogen) to the anode 17, and the separator 15 disposed on the cathode side of the MEA 14 is oxidized on the cathode 18. An oxidant gas flow path 20 for supplying an agent gas (for example, a gas containing oxygen, such as air) is formed.
2 and 3, the gas flow paths 19 and 20 are gas flow paths between a large number of protrusions formed in the separator 15. The gas flow paths 19 and 20 may be composed of a large number of grooves.

On the anode 17 side, an ionization reaction is performed to convert hydrogen into hydrogen ions (protons) and electrons. The hydrogen ions move to the cathode side through the electrolyte membrane, and oxygen, hydrogen ions, and electrons (generated at the anode on the cathode 18 side). The next reaction is to produce water from electrons coming through an external circuit or electrons produced at the anode of the adjacent cell coming through the separator.
Anode side: H ₂ → 2H ⁺ + 2e ⁻
Cathode side: 2H ⁺ + 2e ⁻ + (1/2) O ₂ → H ₂ O
The generated water is mainly formed in the oxidant gas flow path 20 and flows downstream in the gas flow, so that the water content is higher on the downstream side of the oxidant gas flow path 20. Since moisture moves from the cathode side to the anode side through the electrolyte membrane, some moisture is also present in the fuel gas channel 19. Excess water hinders the supply of gas to the electrode, so it is necessary that water be appropriately discharged from the gas flow path, particularly the oxidant gas flow path 20.

The fuel cell 10 has a rotating shaft 21 extending in the cell stacking direction at the center of the cell in the cell plane direction, and the fuel cell stack 12 can rotate together with the rotating shaft 21. The rotary fuel cell stack 12 is rotated around the rotation axis of the rotation shaft 21 together with the rotation shaft 21 by the driving device 13. By this rotation, centrifugal force acts on the water in the gas flow paths 19 and 20, and the water is moved to the outer peripheral side not only by the gas flow but also by the centrifugal force and is discharged from the cell.
The fuel cell 10 includes a fuel gas supply passage 22 to the cell 11 (fuel gas supply passage), an oxidant gas supply passage 23 to the cell 11 (oxidant gas supply passage), and a fuel gas discharge passage 24 ( A fuel gas discharge passage) and an oxidant gas discharge passage 25 (oxidant gas discharge passage).
In order to effectively drain water by centrifugal force, the gas is introduced into the cell 11 on the inner peripheral side of the cell 11 for both the fuel gas and the oxidant gas. The water is discharged on the outer peripheral side of the cell 11 for both the fuel gas and the oxidant gas.

Both the fuel gas supply passage 22 (fuel gas supply passage) to the cell 11 and the oxidant gas supply passage 23 (oxidant gas supply passage) to the cell 11 are provided in the rotary shaft 21. .
The fuel gas supply passage 22 (fuel gas supply passage) and the oxidant gas supply passage 23 (oxidant gas supply passage) in the rotary shaft 21 are mutually separated by a separation wall 26 in the rotary shaft 21. It is separated.
As shown in FIG. 3, in the separator surface where the fuel gas channel 19 exists, there is no seal wall in the gas flow part from the fuel gas supply passage 22 to the fuel gas channel 19 in the separator surface. There is a seal wall 57 between the supply passage 23 and the separator in-plane fuel gas passage 19.
As shown in FIG. 2, in the separator surface where the oxidant gas flow channel 20 exists, there is no seal wall in the gas flow part from the oxidant gas supply passage 23 to the separator in-plane oxidant gas flow channel 20, There is a seal wall 56 between the fuel gas supply passage 22 and the separator in-plane oxidant gas passage 20.
The supply direction of the fuel gas to the fuel gas supply passage 22 and the supply direction of the oxidant gas to the oxidant gas supply passage 23 are opposite to each other in the axial direction of the rotary shaft 21 and opposite to each other of the rotary shaft 21. Supplied from the side.
2 and 3, the fuel gas supply passage 22 and the oxidant gas supply passage 23 are electrically insulated from each other by the insulating material 55 at the separation wall 26 site.

The exhaust port 27 from the fuel gas cell and the exhaust port 28 from the oxidant gas cell are provided on surfaces of the fuel cell stack 12 in different directions.
The outlet 27 from the fuel gas cell is substantially parallel to the direction in which the rotating shaft 21 extends (cell stacking direction), and the outlet 28 from the oxidant gas cell is substantially perpendicular to the direction in which the rotating shaft 21 extends.
Thus, mutual interference between the exhaust ports 27 and 28 is avoided, and mixing of the exhaust fuel gas and the exhaust oxidant gas is simple, for example, the space 29 and the exhaust port 28 where the fuel gas is exhausted from the exhaust port 27. The space 30 from which the oxidant gas is discharged is prevented by a simple configuration such as being separated by the fastening plate 31 of the stack 23. The discharge ports 27 and 28 rotate around the axis of the rotating shaft 21 together with the fuel cell stack.
As shown in FIG. 3, a fuel gas discharge manifold 53 is provided on the outer periphery of the cell, and the fuel gas discharge manifold 53 extends substantially parallel to the direction in which the rotating shaft 21 extends (cell stacking direction). It communicates with the outlet 27 from the gas cell. The fuel gas that has flowed to the outer periphery of the cell is prevented from exiting radially outward from the outer periphery of the cell by the gas seal 54, flows out into the space 29 through the discharge manifold 53 and the discharge port 27, and then from the space 29. It flows to the discharge passage 24.
As shown in FIG. 2, the oxidant gas flows from the outer peripheral surface of the fuel cell stack 12 to the space 30 as it is, and flows out from the space 30 to the oxidant gas discharge passage 25.

  The fuel cell 10 includes a fixed casing 32 that surrounds the rotatable fuel cell stack 12. The casing 32 is formed with a fuel gas outlet 33 (an end portion of the discharge passage 24) for guiding the fuel gas discharged from the fuel gas discharge port 27 to the outside of the casing 32, and the oxidant gas. An oxidant gas outlet 34 is formed to guide the oxidant gas discharged from the discharge port 28 from the cell to the space 30 to the outside of the casing 32. The oxidant gas outlet 34 (the end of the discharge passage 25) may also serve as drainage of the discharged water. The fuel gas outlet 33 and the oxidant gas outlet 34 are fixed. Since the spaces 29 and 30 exist, the fuel gas outlet 33 and the oxidant gas outlet 34 can be fixed even if the discharge ports 27 and 28 rotate.

The fuel cell 10 has clamping plates 31 that can rotate together with the fuel cell stack 12 at both ends of the fuel cell stack 12 in the cell stacking direction. The clamping plate 31 at one end is an anode and the clamping plate 31 at the other end is a cathode. One of the anode clamping plate 31 and the cathode clamping plate 31 is connected to a fixed ground 35 so as to be relatively rotatable. The other of the anode clamping plate 31 and the cathode clamping plate 31 is a fixed power extraction means 36. Are connected to each other so as to be relatively rotatable.
For example, the other of the anode clamping plate 31 and the cathode clamping plate 31 is electrically connected to a part of the rotating shaft 21, and the power take-out means 36 has a sliding portion 37 that is in sliding contact with a part of the rotating shaft 21. Have.

In FIG. 1, the anode clamping plate 31 that is electrically connected to the cathode side is electrically connected to the casing 32 via the first portion 21 a of the rotating shaft 21 and the conductive bearing 38, and the casing 32 is connected to the ground 35. ing. The cathode clamping plate 31 that is electrically connected to the anode side is electrically connected to the sliding portion 37 of the power extracting means 36 via the second portion 21 b of the rotating shaft 21. The second portion 21 b of the rotating shaft 21 is insulated from the casing 32 by an insulating bearing 39. Further, the first portion 21 a and the second portion 21 b of the rotating shaft 21 are insulated by an insulating material 55.
In FIG. 1, the driving device 13 includes an electric motor 41 connected to the rotating shaft 21 by an insulating coupling 42. However, the driving device 13 may transmit the rotation of the motor 41 to the rotating shaft 21 by a belt 43 as shown in the test apparatus of FIGS.

4 and 5, the fuel cell 10 is configured as follows.
FIG. 4 shows a case where the fuel cell stack 12 is composed of one unit fuel cell 11, but it may be composed of a plurality of unit fuel cells 11.
In FIG. 4, the fuel gas inlet 44 is provided on the stationary casing 32 on the extension of the rotation axis of the rotation shaft 21, and the oxidant gas inlet 45 is provided on the extension of the rotation axis of the rotation shaft 21. The rotating shaft 21 and the casing 32 are rotatable with respect to each other by bearings and are sealed with sealing materials 46, 47 and 48.
In FIG. 4, a hatched portion indicates an insulating material portion. The cathode separator 15 is electrically connected to the anode clamping plate 31 by a lead wire 49, the anode clamping plate 31 is electrically connected to the rotating shaft 21, and the rotating shaft 21 is electrically connected to the fixed casing 32 via the conductive bearing 38. 32 is grounded. On the other hand, the anode-side separator 15 is connected to the cylindrical conductive member 51 by a lead wire 50, and fuel cell power is supplied from a power extraction means 36 having a sliding portion (brush) 37 pressed against the cylindrical conductive member 51 by a spring 52. It is taken out. The power extraction means 36 having the cylindrical conductive member 51 and the sliding portion (brush) 37 is insulated from the rotating shaft 21.
The fuel cell stack 12 is rotated together with the rotating shaft 21 by transmitting the rotation of the motor 41 to the fastening plate 31 and the rotating shaft 21 by a belt 43 having a V-shaped cross section.

Next, functions and effects of the present invention will be described.
In the fuel cell 10 of the present invention, both the fuel gas supply passage 22 to the cell and the supply passage 23 to the oxidant gas cell are provided in the rotary shaft 21, so that only the oxidant gas passage 20 in the cell plane is provided. In addition, the moisture in the in-cell fuel gas passage 19 can also be moved radially outward by the centrifugal force acting on the water, and the discharge of the generated water can be promoted.
In addition, both the supply of the fuel gas to the fuel gas supply passage 22 in the rotary shaft 21 and the supply of the oxidant gas to the oxidant gas supply passage 23 in the rotary shaft 21 are performed in the rotary shaft 21 rotating around the rotary shaft core. Since the gas is supplied to the gas supply passages 22 and 23, the gas can be supplied from a fixed bearing support member (for example, the casing 32) that supports the rotating shaft 21 via the bearing. Accordingly, the gas supply ports (fuel gas inlet 44 and oxidant gas inlet 45) provided in the bearing support member (for example, the casing 32) are attached to the gas supply ports 44 and 45 without rotating together with the rotary shaft 21. Gas can be supplied without causing entanglement of the rotating shaft 21 such as a hose. Therefore, gas can be supplied, and a simple configuration in which a hose is connected to a fixed gas supply port is sufficient. The structure of the rotating shaft 21 and the gas supply ports 44 and 45 in FIG. 4 can be applied to FIG.

The fuel gas supply passage 22 and the oxidant gas supply passage 23 in the rotary shaft 21 are separated from each other by a separation wall 26 in the rotary shaft 21. The supply passages 22 and 23 can be made independent of each other in terms of flow path, and mixing of fuel gas and oxidant gas can be prevented.
There is no seal wall in the gas flow part from the fuel gas supply passage 22 to the separator in-plane fuel gas passage 19, but there is a seal wall between the oxidant gas common soot passage 23 and the separator in-plane fuel gas passage 19. 57, and there is no seal wall in the gas flow part from the oxidant gas supply passage 23 to the separator in-plane oxidant gas flow path 20, but the fuel gas common soot path 22 and the separator in-plane oxidant gas flow path 20 Since there is a seal wall 56 between them, the mixing of the fuel gas and the oxidant gas can be prevented even at the transition portion from the supply passages 22 and 23 to the separator in-plane gas flow paths 19 and 20.
. Since the separator in-plane gas flow paths 19 and 20 are separated by the electrolyte membrane 16, there is no mixing of the fuel gas and the oxidant gas in the separator in-plane gas flow paths 19 and 20.

  Since the exhaust port 27 from the fuel gas cell and the exhaust port 28 from the oxidant gas cell are provided on surfaces of the fuel cell stack 12 in different directions, the fuel gas and the oxidant discharged from the fuel cell stack 12 are provided. It becomes easy to take the structure which prevents mixing with gas. For example, by mixing the spaces 29 and 30 with the fastening plate 31, mixing of the fuel gas and the oxidant gas can be prevented.

  When the exhaust port 27 from the fuel gas cell and the exhaust port 28 from the oxidant gas cell are provided on surfaces of the fuel cell stack 12 in different directions, the exhaust port 27 from the fuel gas cell is provided on the rotary shaft 21. Since the discharge port 28 from the cell of the oxidant gas is substantially perpendicular to the direction in which the rotating shaft 21 extends, the oxidant gas flow path with a large amount of generated water is opened radially outward. Therefore, blockage of the in-cell oxidant gas flow path 20 by the generated water can be effectively suppressed.

  The hose is not connected to the exhaust port 27 from the fuel gas cell and the exhaust port 28 from the oxidant gas cell, and the fixed casing 32 surrounding the fuel cell stack 12 is connected to the fixed casing 32 from the exhaust port 27 from the fuel gas cell. A fuel gas outlet 33 for guiding the discharged fuel gas to the outside of the casing 32 and an oxidant gas outlet 34 for guiding the oxidant gas discharged from the discharge port 28 from the oxidant gas cell to the outside of the casing 32 are formed. Therefore, the gas outlets 33 and 34 can be fixed, and the gas can be discharged without causing the fuel cell stack such as a hose to be entangled.

The fuel cell stack 12 has clamping plates 31 that can be rotated together with the fuel cell stack at both ends of the cell stacking direction. The clamping plate 31 at one end is an anode and the clamping plate 31 at the other end is a cathode, and one of the anode and the cathode is fixed. Since the other of the anode and the cathode is connected to the fixed power take-out means 36 so as to be relatively rotatable, the ground 35 and the power take-out means 36 are connected even if the fuel cell stack 12 rotates. Is fixed, the electric power of the fuel cell can be taken out without causing the electric wire to be wound around the stack 12.
In this case, in the example of FIGS. 1 to 3, the other of the anode and the cathode is electrically connected to the part 21 b of the rotating shaft 21, and the power extraction means 36 slides in contact with the part 21 b of the rotating shaft 21. Since it has the part 37, even if the other 31 (clamping plate) of an anode and a cathode rotates, electric power can be taken out by the 37 sliding contact of the rotating shaft 21 and a sliding part.

It is sectional drawing of the cell lamination direction of the fuel cell of Example 1 of this invention. It is sectional drawing of the direction orthogonal to the cell lamination direction of the cathode side separator site | part of the fuel cell of Example 1 of this invention. It is sectional drawing of the direction orthogonal to the cell lamination direction of the anode side separator site | part of the fuel cell of Example 1 of this invention. It is sectional drawing of the cell lamination direction of the test apparatus of the fuel cell of this invention. It is sectional drawing of the direction orthogonal to the cell lamination direction in the belt site | part of the apparatus of FIG.

Explanation of symbols

10 (solid polymer electrolyte type) fuel cell 11 unit fuel cell 12 fuel cell stack 13 driving device 14 MEA
15 Separator 16 Electrolyte membrane 17 Anode 18 Cathode 19 Fuel gas passage 20 Oxidant gas passage 21 Rotating shaft 21a First portion 21b Second portion 22 Fuel gas supply passage 23 Oxidant gas supply passage 24 Fuel gas discharge passage 25 Oxidant gas discharge passage 26 Separation wall 27 Exhaust port 28 from fuel gas cell Exhaust port 29, 30 from oxidant gas cell Space 31 Clamping plate 32 Casing 33 Fuel gas outlet 34 Oxidant gas outlet 35 Earth 36 Electricity extraction Means 37 Sliding part (brush)
38 Conductive bearing 39 Insulating bearing 41 Electric motor 42 Insulating coupling 44 Fuel gas inlet 45 Oxidant gas inlet 46, 47, 48 Sealing material 49, 50 Lead wire 51 Cylindrical conductive member 52 Spring 53 Fuel gas discharge manifold 54 Gas Seal 55 Insulation material 56, 57 Seal wall

Claims (12)

  A fuel cell having a rotating shaft extending in a cell stacking direction at a cell central portion in a cell in-plane direction, and a fuel cell stack being rotatable together with the rotating shaft, wherein a fuel gas supply passage to the cell and an oxidant gas The fuel cell which provided the supply path to the cell in the said rotating shaft.   2. The fuel cell according to claim 1, wherein the fuel gas supply passage to the cell and the oxidant gas supply passage to the cell are separated from each other by a separation wall in the rotation shaft.   The fuel cell according to claim 1, wherein an outlet from the fuel gas cell and an outlet from the oxidant gas cell are provided on surfaces of the fuel cell stack in different directions.   4. The fuel according to claim 3, wherein the discharge port of the fuel gas from the cell is substantially parallel to a direction in which the rotation axis extends, and the discharge port of the oxidant gas from the cell is substantially perpendicular to a direction in which the rotation shaft extends. battery.   A fixed casing surrounding the rotatable fuel cell stack is provided, and a fuel gas outlet for guiding the fuel gas discharged from the fuel gas discharge port to the outside of the casing is formed in the casing. The fuel cell according to claim 3, wherein an oxidant gas outlet for guiding the oxidant gas discharged from the discharge port of the oxidant gas from the cell to the outside of the casing is formed.   The fuel cell stack has clamping plates that can be rotated together with the fuel cell stack at both ends of the cell stacking direction, the clamping plate at one end is an anode, the clamping plate at the other end is a cathode, and one of the anode and the cathode is a fixed ground. 2. The fuel cell according to claim 1, wherein the fuel cell conducts in a relatively rotatable manner, and the other of the anode and the cathode is conducted in a relatively rotatable manner with a fixed power extracting means.   The fuel cell according to claim 6, wherein the other of the anode and the cathode is electrically connected to a part of the rotating shaft, and the power take-out means has a sliding portion that slidingly contacts a part of the rotating shaft.   A fuel cell having a rotating shaft extending in the cell stacking direction at a cell central portion in the cell in-plane direction, and the fuel cell stack being rotatable together with the rotating shaft, wherein the fuel gas discharge port from the cell and the oxidant gas The fuel cell which provided the discharge port from these cells in the mutually different surface of a fuel cell stack.   9. The fuel according to claim 8, wherein a discharge port of the fuel gas from the cell is substantially parallel to a direction in which the rotation axis extends, and a discharge port of the oxidant gas from the cell is substantially perpendicular to a direction in which the rotation shaft extends. battery.   A fixed casing surrounding the rotatable fuel cell stack is provided, and a fuel gas outlet for guiding the fuel gas discharged from the fuel gas discharge port to the outside of the casing is formed in the casing. The fuel cell according to claim 8, wherein an oxidant gas outlet for guiding the oxidant gas discharged from the discharge port of the oxidant gas from the cell to the outside of the casing is formed.   A fuel cell having a rotating shaft extending in a cell stacking direction at a cell central portion in a cell in-plane direction, and the fuel cell stack being rotatable with the rotating shaft, and the fuel cells at both ends of the fuel cell stack in the cell stacking direction A clamping plate rotatable with the stack, the clamping plate at one end is an anode and the clamping plate at the other end is a cathode, and one of the anode and the cathode is connected to a fixed ground so as to be relatively rotatable, and the anode and the cathode A fuel cell in which the other is connected to a fixed power extraction means so as to be relatively rotatable.   12. The fuel cell according to claim 11, wherein the other of the anode and the cathode is electrically connected to a part of the rotating shaft, and the power extracting means has a sliding portion that slidingly contacts a part of the rotating shaft.

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