JP2007179757A - Cell stack device and fuel cell - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cell stack device having a structure in which a positional displacement of a fuel cell is not caused even under high temperature exposure for a long time, and time and effort are not required in manufacturing. <P>SOLUTION: The cell stack device 1 is provided, in which lower ends of a plurality of fuel cells 2 having gas flow passages 2a in a long axial direction are erected and adjoined to a top plate 5 of a manifold 4, with a gas chamber 3 formed therein, in a gas seal condition by inorganic material, and the gas flow passages of the fuel cell 2 and the gas chamber 3 of the manifold 4 communicate with each other. The fuel cell 2 is supported at an inner surface of the manifold 4 (abuts on an inner bottom surface 4a), a space 6 is formed between a lower end surface of the fuel cell 2 and the inner bottom surface 4a of the manifold 4 at the same time, and the gas passages of the fuel cell 2 open to the space 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cell stack device and a fuel cell, and more particularly to a cell stack device and a fuel cell of a type in which a fuel cell is erected and fixed to a manifold.

A conventional cell stack device of this type is described in, for example, Patent Document 1 related to the applicant's patent application. In the cell stack device described in Patent Document 1, one end portion of a fuel cell is integrally joined and fixed to a ceramic cell support plate, and the top plate of the manifold is configured by the cell support plate.
JP 2004-63355 A

However, the cell stack apparatus has the following problems.
(1) When a non-metallic material (ceramics, glass, crystallized glass, etc.) is used for the cell support plate, softening occurs due to long-time exposure to high temperatures, and fuel cell misalignment occurs due to its own weight. There is a fear.

  Therefore, a cell stack device having a structure in which the positional deviation of the fuel cell does not occur even when exposed to a high temperature for a long time is required.

  In view of the above situation, an object of the present invention is to provide a cell stack device having a structure in which a positional deviation of a fuel cell does not occur even when exposed to a high temperature for a long time, and a fuel cell storing the cell stack device. And

In order to solve the above problems, the present invention provides the following configurations.
According to the first aspect of the present invention, the lower ends of the plurality of fuel cells having gas flow paths in the axial direction are gas-sealed with an inorganic material on the top plate of a manifold in which a gas chamber is formed. A cell stack device, wherein the fuel cell gas flow path and the gas chamber in the manifold communicate with each other, wherein the fuel cell is supported on the inner surface of the manifold. A cell stack device, wherein a space is formed between a lower end surface of the fuel cell and an inner bottom surface of the manifold, and a gas flow path of the fuel cell is opened in the space. It is to provide.

  In the invention according to claim 2, the inner bottom surface of the manifold is a flat surface, and a part of the lower end portion of the fuel cell is cut away, and the lower end of the fuel cell is formed on the inner bottom surface of the manifold. 2. The cell stack device according to claim 1, wherein a space is formed between the lower end surface of the fuel cell and the inner bottom surface of the manifold.

  In the invention according to claim 3, the lower end of the fuel cell is locked to the inner side surface of the manifold, and a space is formed between the lower end surface of the fuel cell and the inner bottom surface of the manifold. The cell stack device according to claim 1 is provided.

  In the invention according to claim 4, the lower end of the fuel cell is supported on the inner bottom surface of the manifold by an insulating support member, and there is a space between the lower end surface of the fuel cell and the inner bottom surface of the manifold. 2. The cell stack device according to claim 1, wherein the cell stack device is formed.

  The invention according to claim 5 is characterized in that the top plate of the manifold is made of an inorganic material, and the gas seals at the lower ends of the plurality of fuel cells and the top plate of the manifold are produced simultaneously. The cell stack device according to any one of 1 to 4 is provided.

  The invention according to claim 6 is characterized in that the manifold is made of an inorganic material, and the gas seals at the lower ends of the plurality of fuel cells and the manufacture of the manifold are performed simultaneously. A cell stack device according to claim 1 is provided.

  According to a seventh aspect of the present invention, there is provided a fuel cell characterized in that the cell stack device according to any one of the first to sixth aspects is accommodated in a storage container.

According to the cell stack device of the first aspect of the present invention, a space is formed between the lower end surface of the fuel cell and the inner bottom surface of the manifold, and the gas flow path of the fuel cell opens to the space. Therefore, the gas in the gas chamber of the manifold can be supplied into the gas flow path of the fuel cell, and the fuel cell is supported on the inner surface of the manifold. Even if the gas is exposed to a high temperature for a long time and the gas seal portion at the lower end of the fuel cell is softened, no downward displacement of the fuel cell occurs.
The cell stack device of the present invention can be used for distributed power generation such as a household fuel cell, and is particularly preferably used for a solid oxide fuel cell of 1 KW or less.

  According to the cell stack device of the second aspect, in addition to the effect of the invention of the first aspect, the fuel cell unit is provided between the notched portion of the lower end portion of the fuel cell unit and the inner bottom surface of the manifold. The space where the gas flow path opens can be formed, and the lower end of the fuel cell is in contact with the inner bottom surface of the manifold, so that the cell stack device is exposed to high temperature during power generation, and the lower end of the fuel cell Even if the gas seal portion is softened, a downward displacement of the fuel cell does not occur.

  According to the cell stack device of the third aspect, in addition to the effect of the invention of the first aspect, the lower end of the fuel cell is locked to the inner side surface of the manifold. Even if the cell stack device is exposed to a high temperature during power generation and the gas seal part at the lower end of the fuel cell is softened due to the locking of the lower end of the cell, a downward displacement of the fuel cell does not occur. .

  According to the cell stack device of claim 4, in addition to the effect of the invention of claim 1, the lower end of the fuel cell is supported on the inner bottom surface of the manifold by the insulating support member. Even if the apparatus is exposed to a high temperature and the gas seal portion at the lower end of the fuel cell is softened, a downward displacement of the fuel cell does not occur.

  According to the cell stack device of the fifth aspect, it is possible to manufacture a cell stack device that can be expected to have the effect of the invention according to any one of the first to fourth aspects, and to join the lower end of the fuel cell and the top of the manifold. Since the plate and the inorganic material can be simultaneously formed, the cell stack device can be easily manufactured.

  According to the cell stack device of the sixth aspect, it is possible to manufacture the cell stack device in which the effect of the invention according to any one of the first to fourth aspects can be expected, and to connect the lower end portion of the fuel cell and the manifold. Since it can be formed simultaneously with an inorganic material, a cell stack device can be easily manufactured.

  According to the fuel cell of claim 7, even if the cell stack device is exposed to a high temperature for a long time during power generation, and the gas seal portion at the lower end of the fuel cell is softened, the fuel cell is displaced downward. Therefore, the long-term reliability of the fuel cell can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings showing examples.
In FIG. 1A, reference numeral 1 denotes a cell stack apparatus according to a first embodiment of the first type of the present invention. The cell stack apparatus 1 is a first type cell stack apparatus, and includes the following (A) to (A). (C) is provided.

  That is, (A) the lower ends of a plurality of hollow flat plate fuel cells 2 (only one is shown in the figure) having gas flow paths 2a, 2a. A gas flow path and a manifold of the fuel cell 2 are formed by standingly joining the top plate 5 of the manifold 4 in which the gas chamber 3 is formed in a gas-sealed state with an inorganic material such as ceramics, glass or crystallized glass. The gas chamber 3 in 4 communicates. The plurality of fuel cells 2 are electrically connected in series by a current collecting member 2b as shown in FIG. 1 (b).

  (B) The fuel cell 2 is supported on the inner surface of the manifold 4 (in FIG. 1, the lower end of the fuel cell is in contact with the inner bottom surface 4a of the manifold 4). A space 6 is formed between the lower end surface of the fuel cell 2 and the inner bottom surface of the manifold 4, and a gas flow path of the fuel cell 2 is opened in the space 6.

  (C) Further, the inner bottom surface 4 a of the manifold 4 is a flat surface, and a part of the lower end portion of the fuel cell 2 is cut away, so that the lower end of the fuel cell 2 contacts the inner bottom surface 4 a of the manifold 4. A space 6 is formed between the lower end surface of the fuel cell 2 and the inner bottom surface 4 a of the manifold 4.

  Furthermore, the cell stack apparatus 1 has a configuration unique to the first embodiment of the first type. Specifically, (D1) the notched lower end portion of the fuel battery cell 2 is obliquely notched from the left lower end to the upper right direction in the drawing, and the left lower end portion 7 is on the inner bottom surface 4 a of the manifold 4. The space 6 is formed below a beveled surface 8 that is beveled in the upper right direction from the lower left end 7.

  Thus, in the cell stack apparatus 1, the fuel gas introduced into the gas chamber 3 of the manifold 4 passes through the space 6 from the opening (not shown) of the fuel cell 2 to the gas flow path. Supplied in.

  Thus, the cell stack device 1 can be expected to have the following effect (a) as a first type cell stack device. That is, (a) a space 6 is formed between the lower end surface of the fuel cell 2 and the inner bottom surface 4 a of the manifold 4, and the gas flow path of the fuel cell 2 is opened in the space 6. 4, the gas in the gas chamber 3 can be supplied into the gas flow path of the fuel cell 2, and the lower end of the fuel cell 2 is in contact with the inner bottom surface 4 a of the manifold 4. Even if the stack device 1 is exposed to a high temperature for a long period of time and the gas seal portion at the lower end of the fuel cell 2 is softened, a downward displacement of the fuel cell 2 does not occur.

  In FIG. 1C, reference numeral 11 denotes a cell stack device according to a second embodiment of the first type of the present invention. The cell stack device 11 is a cell stack device of the first type as shown in FIG. 1 (a) has the same configuration as the above-described (A) to (C) of 1), and moreover, as a specific configuration of the second type of the first type, specifically, (D2 ) The notched lower end of the fuel cell 2 is obliquely cut away from the lower end central portion 12 in the upper left direction and the upper right direction in the drawing, and the lower end central portion 12 contacts the inner bottom surface 4 a of the manifold 4. The spaces 6 and 6 are formed below the beveled surfaces 13 and 14 which are in contact with each other and are obliquely notched in the upper left direction and the upper right direction from the lower end central portion 12.

  Thus, in the cell stack apparatus 11, the fuel gas introduced into the gas chamber 3 of the manifold 4 passes through the spaces 6 and 6 to the left and right oblique notched surfaces 13 and 14 of the lower end central portion 12. It is supplied into the gas flow path from an opening (not shown) of the fuel cell 2 that opens.

  Thus, the cell stack device 11 can be expected as the first type cell stack device to achieve the same effect as the above-described (a) described in the cell stack device 1.

  In FIG. 1 (d), reference numeral 21 denotes a cell stack device according to a third embodiment of the first type of the present invention. The cell stack device 21 is a cell stack device of the first type as shown in FIG. 1 (a) has the same configuration as the above-described (A) to (C) of 1), and moreover, as a specific configuration of the first type of the third embodiment, specifically, (D3 ) In the drawing, the notched lower end portion of the fuel cell 2 is obliquely notched from the left lower end portion 22 toward the center upper direction, and is obliquely notched from the right lower end portion 23 toward the center upper direction. The left and right lower end portions 22, 23 abut on the inner bottom surface 4 a of the manifold 4, the oblique notched surface 24 obliquely notched from the left lower end portion 22 toward the center upward direction, and the right lower end portion 23 toward the center upward direction. The space 6 having a substantially triangular cross section is formed below the beveled notched surface 25. To have.

  Thus, in the cell stack device 21, the fuel gas introduced into the gas chamber 3 of the manifold 4 passes through the space 6 and has openings (not shown) in the oblique notch surface 24 and the oblique notch surface 25. ) To the gas flow path.

  Thus, the cell stack device 21 can also be expected to have the same effect as the above-described (a) described in the cell stack device 1 as a first type cell stack device.

  In FIG. 2A, reference numeral 31 denotes a cell stack apparatus according to a fourth embodiment of the first type of the present invention, and the cell stack apparatus 31 is a first type cell stack apparatus described above as (A) to (A). (C) has the same configuration as that of the first type of the fourth embodiment. Specifically, (D4) The notched lower end of the fuel cell 2 is shown in the figure. In this case, it is cut out in a curved shape so as to bulge outward from the central lower end 32 toward the upper left and upper corners, and is cut out in a curved shape so as to bulge outward from the central lower end 32 toward the upper right. The center lower end portion 32 abuts on the inner bottom surface 4a of the manifold 4 and from the notch surface 33 and the center lower end portion 32 that are notched in a curved shape so as to bulge outward from the center lower end portion 32 toward the upper left. Cut in a curved shape so that it swells outward toward the upper right. Have been respectively the space 6, 6 under the cut-away surface 34 is formed.

  Thus, in the cell stack device 31, the fuel gas introduced into the gas chamber 3 of the manifold 4 passes through the spaces 6 and 6 and the openings (not shown) of the notch surface 33 and the notch surface 34. ) To the gas flow path.

  Thus, the cell stack device 31 can also be expected to have the same effect as the above-described (a) described in the cell stack device 1 as a first type cell stack device.

  In FIG. 2B, reference numeral 41 denotes a cell stack device according to a fifth embodiment of the first type of the present invention. The cell stack device 41 is a first type cell stack device described above as (A) to (A) to FIG. (C) has the same configuration as that of the fifth type of the first type. Specifically, (D5) The notched lower end of the fuel cell 2 is shown in the figure. In this case, the left and right lower end portions 42 and 43 are notched in a curved shape toward the upper center of the center, and are formed in a substantially semicircular shape in sectional view that opens downward. The spaces 6 are formed below the curved surfaces 44 that are in contact with each other and cut out in a curved shape.

  Thus, in the cell stack device 41, the fuel gas introduced into the gas chamber 3 of the manifold 4 passes through the space 6 from the opening (not shown) of the curved surface 44 into the gas flow path. To be supplied.

  Thus, the cell stack device 41 can also be expected to have the same effect as the above-described (a) described in the cell stack device 1 as the first type cell stack device.

  The first-type cell stack device is not limited to the first to fifth embodiments, and can be variously provided that it has the configurations (A) to (C) at least. A specific configuration is conceivable, and at that time, the same effect as in the above (a) can be expected.

  In FIG. 3 (a), reference numeral 51 denotes a cell stack device according to the second type of the first embodiment of the present invention. The cell stack device 51 is a second type cell stack device. B) and the following configuration (E) are provided.

  That is, in addition to the configurations of (A) and (B), (E) the lower end of the fuel cell 2 is locked to the inner side surface of the manifold 4, and the lower end surface of the fuel cell 2 and the inner bottom surface of the manifold 4 are A space 6 is formed between 4a (in this case, the lower end portion of the inner side surface may be the inner bottom surface 4a).

  Furthermore, the cell stack device 51 has a unique configuration as the first embodiment of the second type. Specifically, as shown in the figure, (F1) the left inner surface 52 of the manifold 4 is obliquely arranged toward the lower central portion, the right inner surface 53 is obliquely disposed toward the lower central portion, and The left and right lower ends of the fuel cells 2 are locked to the left and right inner side surfaces 52 and 53 that are obliquely provided. The space 6 is formed in a substantially triangular shape by being sandwiched between the left and right inner side surfaces 52 and 53 below the lower end of the fuel cell 2.

  Thus, in the cell stack device 51, the fuel gas introduced into the gas chamber 3 of the manifold 4 is supplied into the gas flow path from the opening at the lower end of the fuel cell 2 through the space 6. The

  Thus, the cell stack device 51 is, as a second type cell stack device, (b) since the lower end of the fuel cell 2 is locked to the inner side surface of the manifold 4. Even if the cell stack device 51 is exposed to a high temperature during power generation and the gas seal portion at the lower end of the fuel cell 2 is softened due to the locking of the lower end of the fuel cell 2, the position below the fuel cell 2 Misalignment does not occur.

  In FIG. 3B, reference numeral 61 denotes a cell stack device according to the second type of the second embodiment of the present invention. The cell stack device 61 is a cell stack device of the second type as shown in FIG. 3 (a) has the above-described configurations (A), (B), and (E) of 51), and further, as a specific configuration of the second type second embodiment, specifically, (F2) The left and right inner side surfaces 62 and 63 of the manifold 4 are notched in a curved shape so as to bulge outward toward the lower central portion, and are formed in a substantially semicircular shape that opens upward in a sectional view. The left and right lower ends of the fuel battery cell 2 are locked to the left and right inner side surfaces 62 and 63. A space 6 is formed between the lower end of the fuel cell 2 and the curved left and right inner side surfaces 62 and 63 below the fuel cell 2.

  Thus, in the cell stack device 61, the fuel gas introduced into the gas chamber 3 of the manifold 4 flows through the space 6 from the opening (not shown) at the lower end of the fuel cell 2. Supplied in the road.

  Thus, the cell stack device 61 can be expected as the second type cell stack device to achieve the same effect as the above (b) described in the cell stack device 51.

  In FIG. 4A, reference numeral 71 denotes a cell stack device according to the second type of the third embodiment of the present invention. The cell stack device 71 is a cell stack device of the second type as shown in FIG. 3 (a) includes the above-described configurations (A), (B), and (E) of 51). Further, as a specific configuration of the second type of the third embodiment, specifically, (F3) The left and right inner side surfaces 72, 73 of the manifold 4 are notched in a curved shape so as to bulge outward toward the lower central portion, and are formed in a substantially semicircular shape that opens upward in a sectional view. Steps 74 and 75 formed so as to widen are provided on the upper portions of the left and right inner side surfaces 72 and 73, and the left and right lower ends of the fuel cell 2 are locked to the steps 74 and 75. A space 6 is formed between the lower end of the fuel cell 2 and the left and right inner surfaces 72 and 73.

  Thus, in the cell stack device 71, the fuel gas introduced into the gas chamber 3 of the manifold 4 passes through the space 6 from an opening (not shown) on the lower end surface of the fuel cell 2. It is supplied into the gas flow path.

  Thus, the cell stack device 71 can be expected as the second type cell stack device to achieve the same effect as the above (b) described in the cell stack device 51.

  In FIG. 4B, reference numeral 81 denotes a cell stack apparatus according to a fourth embodiment of the second type of the present invention. The cell stack apparatus 81 is a cell stack apparatus (see FIG. 3 (a) includes the above-described configurations (A), (B), and (E) of 51), and further, as a specific configuration of the second type of the fourth embodiment, specifically, (F4) The left and right inner side surfaces 82 and 83 of the manifold 4 are vertically suspended toward the inner bottom surface 4a, and the gas chamber 3 is formed in a substantially rectangular shape in cross-sectional view, and is widened above the left and right inner side surfaces 82 and 83. Steps 84 and 85 formed as described above are provided, and the left and right lower ends of the fuel cell 2 are locked to the steps 84 and 85. A space 6 is formed between the lower end of the fuel cell 2 and the inner bottom surface 4a.

  Thus, in the cell stack device 81, the fuel gas introduced into the gas chamber 3 of the manifold 4 passes through the space 6 from the opening that opens at the lower end of the fuel cell 2. To be supplied.

  Thus, the cell stack device 81 can be expected as the second type cell stack device to achieve the same effect as the above (b) described in the cell stack device 51.

  In addition, the second type cell stack device is not limited to the first to fourth embodiments, and at least includes the configurations of (A), (B), and (E), Various other specific configurations are conceivable, and in such a case, the same effect as in (b) can be expected.

  In FIG. 5, reference numeral 91 denotes a third type cell stack device of the present invention. The cell stack device 91 is a third type cell stack device, and the following (G) and (G) ).

  That is, in addition to the configurations of (A) and (B), (G) the inner bottom surface 4a of the manifold 4 via the insulating support member 92 having a gap portion where the lower end of the fuel cell 2 communicates with the gas chamber 3 is provided. In other words, the insulating support member 92 is placed on the inner bottom surface 4 a of the manifold 4, the lower end of the fuel cell 2 is placed on the upper end of the insulating support member 92, and the lower end surface of the fuel cell 2 A space 6 is formed in a gap portion between the inner bottom surface 4a of the manifold 4 and communicating with the gas chamber 3 formed by the insulating support member 92.

  The insulating support member 92 is, for example, two plate-like bodies placed parallel to the inner bottom surface 4a of the manifold 4 so as to support the left and right lower ends of the fuel cell 2 in the drawing. However, the insulating support member 92 is not limited to two plate-like bodies, and may be other various members that are insulative and in which a gap portion communicating with the gas chamber 3 is formed. At that time, the same effect can be expected.

  Thus, in the cell stack device 51, the fuel gas introduced into the gas chamber 3 of the manifold 4 is supplied from the opening of the fuel cell 2 into the gas flow path through the space 6. .

  Thus, the cell stack device 91 is a third type cell stack device because (c) the lower end of the fuel cell 2 is supported by the inner bottom surface 4a of the manifold 4 via the insulating support member 92. Even if the cell stack device 51 is exposed to a high temperature during power generation and the gas seal portion at the lower end of the fuel cell 2 is softened, a downward displacement of the fuel cell 2 does not occur.

  The third type cell stack device is not limited to the configuration of the cell stack device 91, and may have various other configurations as long as it has at least the configurations (A), (B), and (G). In this case, the same effect as in (c) can be expected.

Next, the characteristics of the three manufacturing methods will be described with respect to the manufacturing method of the cell stack apparatus 1, 11, 21, 31, 41, 51, 61, 71, 81 and 91.
First, the characteristics of the first manufacturing method will be described using, for example, the cell stack apparatus 1 shown in FIG. 1A. The top plate 5 of the (H) manifold 4 of the cell stack apparatus 1 is made of an inorganic material. The gas seals at the lower ends of the plurality of fuel cells 2 and the top plate 5 of the manifold 4 are produced at the same time. For example, the fuel battery cell 2 is set in a mold for producing the top plate 5, an inorganic material is poured into the mold and baked, and the fuel battery cell 2 is produced by producing the top plate 5 and using the poured inorganic material. Are joined to the top plate 5 in a gas sealable state. By arranging such a top plate 5 in the opening of the manifold body having an open top surface and joining with an inorganic material, the cell stack device of the present invention can be manufactured.

  According to the first manufacturing method, the cell stack device 1 can be manufactured, and (e) the joining of the lower end portion of the fuel battery cell 2 and the top plate 5 of the manifold 4 can be simultaneously formed of an inorganic material, which is easy. In addition, the cell stack apparatus 1 can be manufactured.

  The other cell stack devices 11, 21, 31, 41, 51, 61, 71, 81 and 91 can be manufactured by a manufacturing method similar to the first manufacturing method shown in (H). The same effect as the effect (e) can be expected when

  Next, the characteristics of the second manufacturing method will be described using, for example, the cell stack apparatus 1 shown in FIG. 1A. The (I) manifold 4 of the cell stack apparatus 1 is made of an inorganic material, and includes a plurality of The gas seal at the lower end of the fuel cell 2 and the manifold 4 are produced simultaneously. For example, the fuel cell 2 and the core for forming the space 6 are set in a mold for manufacturing the manifold 4, an inorganic material is poured into the mold, and baked to produce the manifold 4 and the poured inorganic material. Thus, the fuel battery cell 2 is joined to the manifold 4 or to the top plate formed at the upper end of the manifold 4 in a gas sealable state.

  According to the second manufacturing method, the cell stack device 1 can be manufactured, and (f) the joining of the lower end portion of the fuel battery cell 1 and the manifold 4 can be simultaneously formed of an inorganic material. Can be produced.

  The other cell stack devices 11, 21, 31, 41, 51, 61, 71, 81, and 91 can be manufactured by the same manufacturing method as the second manufacturing method shown in (I). The same effect as the effect (f) can be expected.

  Further, as a third manufacturing method, a metal support plate having a plurality of cell insertion holes is used, fuel cells are inserted into the cell insertion holes of the support plate, and the lower end of the fuel cell is inorganic. The cell stack of the present invention can also be formed by gas sealing with a material, standing and joining fuel cells on a support plate, placing the support plate in the opening of the manifold body whose upper surface is open, and joining with an inorganic material. A device can be made.

In FIG. 6, reference numeral 101 denotes a fuel cell in which the four cell stack devices 1, 1.
According to the fuel cell 101, the cell stack devices 1, 1... Exhibit the effect (a) described above, so that (g) the cell stack device 1 is exposed to a high temperature for a long time during power generation. Even if the gas seal portion at the lower end of the cell 2 is softened, no downward displacement of the fuel cell 2 occurs, so the long-term reliability of the fuel cell 101 can be improved.

  Further, instead of the cell stack device 1, any one of the other cell stack devices 11, 21, 31, 41, 51, 61, 71, 81 and 91, or the first or the first It is also possible to store any of the cell stack devices 1, 11, 21, 31, 41, 51, 61, 71, 81, and 91 manufactured by the two manufacturing methods in the storage container 102. The fuel cell in which these cell stack devices are stored in the storage container 102 can be expected to have the same effect as the effect (g) of the fuel cell 101.

(A) It is a front longitudinal cross-sectional view of the cell stack apparatus of 1st Example of 1st type by this invention. (B) It is a partially notched top view of Fig.1 (a). (C) It is a front longitudinal cross-sectional view of the cell stack apparatus of 2nd Example of 1st type by this invention. (D) It is a front longitudinal cross-sectional view of the cell stack apparatus of 3rd Example of 1st type by this invention. (A) It is a front longitudinal cross-sectional view of the cell stack apparatus of 3rd Example of 1st type by this invention. (B) It is a front longitudinal cross-sectional view of the cell stack apparatus of 4th Example of 1st type by this invention. (C) It is a front longitudinal cross-sectional view of the cell stack apparatus of 5th Example of 1st type by this invention. (A) It is a front longitudinal cross-sectional view of the cell stack apparatus of 2nd type 1st Example by this invention. (B) It is a front longitudinal cross-sectional view of the cell stack apparatus of 2nd Example of 2nd type by this invention. (A) It is a front longitudinal cross-sectional view of the cell stack apparatus of 2nd type 3rd Example by this invention. (B) It is a front longitudinal cross-sectional view of the cell stack apparatus of 4th Example of the 2nd type by this invention. It is a front longitudinal cross-sectional view of the 3rd type cell stack apparatus by this invention. It is a front longitudinal cross-sectional view of the fuel cell which accommodated the cell stack apparatus by this invention.

Explanation of symbols

1, 11, 21, 31, 41, 51, 61, 71, 81, 91 Cell stack device 2 Fuel cell 2a Gas flow path 3 Gas chamber 4 Manifold 4a Inner bottom surface 5 Top plate 6 Space 92 Insulating support member 101 Fuel Battery 102 storage container

Claims (7)

  The lower end portions of the plurality of fuel cells having gas flow paths in the axial direction are vertically joined to the top plate of the manifold in which the gas chambers are formed while being gas-sealed with an inorganic material, A cell stack device in which a gas flow path of a fuel cell communicates with a gas chamber in the manifold, wherein the fuel cell is supported on an inner surface of the manifold, and a lower end surface of the fuel cell. A space is formed between the inner bottom surface of the manifold and the manifold, and a gas flow path of the fuel cell is opened in the space.   The inner bottom surface of the manifold is a flat surface, and a part of the lower end portion of the fuel cell is cut away, the lower end of the fuel cell contacts the inner bottom surface of the manifold, and the fuel cell 2. The cell stack device according to claim 1, wherein a space is formed between a lower end surface and an inner bottom surface of the manifold.   2. The lower end of the fuel cell is locked to the inner side surface of the manifold, and a space is formed between the lower end surface of the fuel cell and the inner bottom surface of the manifold. The cell stack device described.   The lower end of the fuel cell is supported on the inner bottom surface of the manifold by an insulating support member, and a space is formed between the lower end surface of the fuel cell and the inner bottom surface of the manifold. The cell stack device according to claim 1.   The top plate of the manifold is made of an inorganic material, and the gas seals at the lower ends of the plurality of fuel cells and the top plate of the manifold are manufactured at the same time. The cell stack device described.   5. The cell stack device according to claim 1, wherein the manifold is made of an inorganic material, and the gas seals at the lower ends of the plurality of fuel cells and the manufacture of the manifold are performed simultaneously. A fuel cell comprising the cell stack device according to any one of claims 1 to 6 stored in a storage container.

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