KR20240150949A - Manifold - Google Patents

Abstract

A manifold according to the present invention comprises: a base plate formed of a square block; and a fluid flow guide block in contact with an individual resistance surface among four resistance surfaces positioned along the square perimeter of the base plate, wherein the fluid flow guide block has a fluid receiving groove positioned in a central region of the fluid flow guide block between the base plate and the fluid flow guide block.

Description

Manifold {MANIFOLD}

The present invention relates to a manifold positioned below a plurality of solid oxide fuel cells (SOFCs) or a plurality of solid oxide electrolysis cells (SOECs) in a solid oxide battery stack device.

In general, solid oxide fuel cells (SOFC) or solid oxide electrolysis cells (SOEC) are stacked in multiple layers on a manifold to form a cell stack. The solid oxide fuel cell or solid oxide electrolysis cell is made of a plate-shaped ceramic material and has a multilayer structure such as a fuel electrode, an electrolyte, and an air electrode. The cells function as unit cells located in each layer of the stack structure.

The above manifold supplies hydrogen gas and oxygen gas to the solid oxide fuel cell or supplies oxygen gas and water vapor to the solid oxide water electrolysis cell. The hydrogen gas and oxygen gas or oxygen gas and water vapor contact a fuel electrode and an air electrode in the solid oxide fuel cell or the solid oxide water electrolysis cell. The fuel electrode, the electrolyte, and the air electrode generate electricity using the hydrogen gas and the oxygen gas in the solid oxide fuel cell, and generate hydrogen using the oxygen gas and the water vapor in the solid oxide water electrolysis cell.

Here, the manifold acts as a supply source of hydrogen gas and oxygen gas or oxygen gas and water vapor, and the unit cell receives hydrogen gas and oxygen gas or oxygen gas and water vapor from the manifold and separately supplies suitable gas and water vapor to the fuel electrode and the air electrode. Therefore, the unit cell must uniformly receive hydrogen gas and oxygen gas or oxygen gas and water vapor from the manifold to each layer in order to maintain good performance of the solid oxide fuel cell or solid oxide water electrolysis cell.

Meanwhile, in order to uniformly deliver hydrogen gas and oxygen gas to each layer from the manifold, the manifold is disclosed as a distribution plate in a fuel cell in Korean Patent Publication No. 10-2020-0072940. The distribution plate is positioned under a plurality of cell units. In addition, the distribution plate has four isolated spaces and has a configuration in which individual isolated spaces are filled with a plurality of ball members.

However, the above distribution plate requires a separation part in the central area in order to have four isolated spaces. That is, the above distribution plate, when manufactured in an assembled or integral manner, requires an X-shaped separation part between the upper plate, lower plate, and walls in order to separate the four isolated spaces. For this purpose, the above distribution plate, when manufactured in an assembled manner, is provided with a separate X-shaped bulkhead member.

In contrast, if the distribution plate is made in one piece, it requires an X-shaped bulkhead machining between the upper and lower plates in the central area. The bulkhead member or bulkhead machining increases the manufacturing cost of the distribution plate.

Korean Patent Publication No. 10-2020-0072940

The present invention has been made to solve the problems of the related art, and the purpose of the present invention is to provide a manifold having a simple structure and suitable for lowering the manufacturing cost based on the simple structure while being positioned below a plurality of solid oxide fuel cells or a plurality of solid oxide water electrolysis cells in a solid oxide battery stack device.

A manifold according to the present invention comprises: a base plate formed of a square block, positioned below a plurality of solid oxide fuel cells (SOFCs) or a plurality of solid oxide electrolysis cells (SOECs) in a solid oxide battery stack device; and a fluid flow guide block which contacts an individual resistance surface among four resistance surfaces positioned along a square perimeter of the base plate, wherein the fluid flow guide block has a fluid receiving groove portion positioned in a central region of the fluid flow guide block between the base plate and the fluid flow guide block, and includes fluid passage holes, a first fluid distribution portion, and a second fluid distribution portion which are positioned in the fluid receiving groove portion and are sequentially positioned from a lower side toward an upper side of the fluid receiving groove portion.

The above base plate has a flat shape on the individual resistance surfaces of the four resistance surfaces and can be in close contact with the fluid flow induction block at the edge region of the fluid flow induction block.

The above fluid flow induction block can close the lower side of the fluid receiving groove, open the upper side of the fluid receiving groove, and open the fluid receiving groove toward the base plate.

The above fluid receiving groove portion can gradually widen in an inverted triangular shape from the lower side of the fluid receiving groove portion toward the upper side to form a groove space between the fluid flow induction block and the base plate.

The fluid receiving groove portion may, when viewed from the base plate, gradually widen in an inverted triangular shape from the lower side of the fluid receiving groove portion toward the upper side, and may have two corners higher than the remaining one corner of the inverted triangular shape.

The above fluid receiving groove portion has a shape of an inverted triangle in the fluid flow induction block, and has a fluid distribution step positioned along two hypotenuses of the inverted triangle shape and a groove side wall surrounded by the two hypotenuses, and the fluid distribution step can protrude from the groove side wall toward the base plate and come into contact with the base plate.

When the fluid receiving groove is formed in an inverted triangle shape in the fluid flow guide block and has fluid distribution steps along two hypotenuses of the inverted triangle shape, the fluid passage hole may penetrate the fluid flow guide block on the lower side of the fluid receiving groove, open a groove side wall of the fluid receiving groove, and be surrounded by the fluid distribution steps.

When the fluid receiving groove portion is formed in an inverted triangular shape in the fluid flow induction block and has a fluid distribution step and a groove side wall between the two hypotenuses along two hypotenuses of the inverted triangular shape, the first fluid distribution portion may connect two corners of the inverted triangular shape and may protrude less than the fluid distribution step based on the groove side wall while contacting the fluid distribution step.

When the fluid receiving groove portion is formed in an inverted triangle shape in the fluid flow induction block and has fluid distribution steps along two hypotenuses of the inverted triangle shape, the first fluid distribution portion can divide the groove space of the fluid receiving groove portion into a first groove space and a second groove space when viewed from the base plate, and connect the first groove space and the second groove space around the first fluid distribution portion.

When the fluid receiving groove portion is formed in an inverted triangle shape in the fluid flow induction block and has a groove side wall between two hypotenuses of the inverted triangle shape, the second fluid distribution portion can contact the base plate while protruding further than the first fluid distribution portion based on the groove side wall on the first fluid distribution portion.

When the fluid receiving groove portion is formed in an inverted triangular shape in the fluid flow induction block and has a fluid distribution step and a groove side wall between the two hypotenuses along two hypotenuses of the inverted triangular shape, the second fluid distribution portion may be formed of a plurality of square segments along the first fluid distribution portion while being spaced apart from the fluid distribution step and the first fluid distribution portion.

When the fluid flow induction block introduces fluid from the outside into the fluid passage hole of the fluid receiving groove, the first fluid distribution unit can send the fluid to the second fluid distribution unit by causing the fluid to flow between the first fluid distribution unit and the base plate in the fluid receiving groove and between the first fluid distribution unit and the fluid distribution step.

When the fluid flow induction block introduces fluid from the outside into the fluid passage hole of the fluid receiving groove portion, the second fluid distribution portion can receive the fluid from the first fluid distribution portion in the fluid receiving groove portion and cause the fluid to flow between the plurality of segments directly above the first fluid distribution portion and between the fluid distribution step and the outermost individual segment around the fluid distribution step, thereby sending the fluid to the cell units of the plurality of solid oxide fuel cells or the plurality of solid oxide water electrolysis cells.

The above fluid flow induction block can cause the fluid to flow into the plurality of segments at a greater speed in the central region of the first fluid distribution portion than in the edge regions of the first fluid distribution portion during the flow of the fluid from the fluid passage hole in the fluid receiving groove portion toward the second fluid distribution portion.

When the fluid flow induction block introduces fluid from the cell units of the plurality of solid oxide fuel cells or the plurality of solid oxide water electrolysis cells, the second fluid distribution unit can receive the fluid between the plurality of segments directly above the first fluid distribution unit and between the fluid distribution unit and the outermost individual segment around the fluid distribution step, and send the fluid to the first fluid distribution unit.

When the fluid flow induction block introduces fluid from the cell units of the plurality of solid oxide fuel cells or the plurality of solid oxide water electrolysis cells, the first fluid distribution unit can receive the fluid from the second fluid distribution unit and cause the fluid to flow between the first fluid distribution unit and the base plate and between the first fluid distribution unit and the fluid distribution step to send the fluid to the fluid passage hole.

The above fluid flow induction block can, when the fluid is introduced from the cell units of the plurality of solid oxide fuel cells or the plurality of solid oxide water electrolysis cells, cause the second fluid distribution unit to flow the fluid to the plurality of segments at a greater speed in the central region of the first fluid distribution unit than in the edge regions of the first fluid distribution unit during the flow of the fluid from the second fluid distribution unit to the fluid passage hole in the fluid receiving groove.

When the fluid flow induction block is positioned on a pair of resistance surfaces positioned in a straight line along the square perimeter of the base plate with respect to the base plate and the remaining pair of resistance surfaces positioned in a straight line, the fluid passage hole, the first fluid distribution unit, and the second fluid distribution unit may have a larger size on the remaining pair of resistance surfaces positioned in a straight line than on the pair of resistance surfaces positioned in a straight line.

The above fluid flow induction block may include at least one of a stainless steel ball and a ceramic ball filled in the fluid passage hole in the fluid receiving groove.

The above fluid flow induction block may include a metal mesh foam that fills the fluid passage hole in the fluid receiving groove.

The above fluid flow induction block may include a metal mesh form filled in the fluid passage hole in the fluid receiving groove, and at least one of a stainless steel ball and a ceramic ball.

When the fluid flow induction block uses the fluid passage holes on the individual resistance surfaces of the resistance surfaces positioned in a pair of straight lines along the square perimeter of the base plate with respect to the base plate as the introduction or discharge of fluid, the first fluid distribution unit and the second fluid distribution unit may have a larger occupied area in the fluid flow induction block having the fluid passage holes used for discharging fluid than in the fluid flow induction block having the fluid passage holes used for introducing fluid.

A manifold according to the present invention comprises:

A solid oxide battery stack device is positioned below a plurality of solid oxide fuel cells or a plurality of solid oxide water electrolysis cells, and has a base plate of a square block in the central area of the manifold and a fluid flow guide block positioned along the square perimeter of the base plate,

The fluid flow induction block has a fluid receiving groove facing the base plate, and the first fluid distribution unit and the second fluid distribution unit are positioned around the fluid passage hole passing through the fluid receiving groove, so that the flow speed of the fluid in the first fluid distribution unit and the second fluid distribution unit is generally uniform when the fluid is introduced and discharged into the fluid passage hole.

By repeatedly arranging fluid flow path blocks along the square perimeter of the base plate, the fluid flow guide block can be cast with a simple structure, and the manufacturing cost can be reduced by brazing the fluid flow path blocks to the base plate.

FIG. 1 is a perspective view schematically showing a solid oxide battery stack device according to an embodiment of the present invention.
Figure 2 is a perspective view showing a manifold in the solid oxide battery stack device of Figure 1.
Figure 3 is an exploded view showing a manifold in the solid oxide battery stack device of Figure 1.
Figure 4 is an image showing a fluid flow induction block in the manifold of Figure 3.
Figure 5 is a perspective view showing the flow of fluid in the manifold of Figure 2.
Figure 6 is a cross-sectional view showing the flow of fluid in the manifold of Figure 2.
Figure 7 is an image showing the flow of fluid when fluid is introduced into the fluid receiving groove in the manifold of Figure 5.
Figure 8 is an image showing the flow of fluid when the fluid is discharged into the fluid receiving groove in the manifold of Figure 5.
Figure 9 is an image showing the flow velocity of the fluid when the fluid is introduced into the fluid receiving groove in the manifold of Figure 5.
Figure 10 is an image showing the flow velocity of fluid in the second fluid distribution section when fluid is introduced into the fluid receiving groove section in the manifold of Figure 5.
Figure 11 is a graph showing the flow velocity distribution of fluid passing between a plurality of fragments in the second fluid distribution section of Figure 10.
FIG. 12 is a cross-sectional view showing a plurality of balls filled in the fluid passage holes in the manifold of FIG. 2 as a first modified example of the solid oxide battery stack device of FIG. 1.
FIG. 13 is a cross-sectional view showing a metal mesh form filled in a fluid passage hole in the manifold of FIG. 2 as a second modified example of the solid oxide battery stack device of FIG. 1.
FIGS. 14 and 15 are images showing the inside of a fluid receiving groove in a fluid flow induction block as a third modified example of the solid oxide battery stack device of FIG. 1.

The detailed description of the present invention set forth below refers to the accompanying drawings, which illustrate specific embodiments in which the present invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention, while different from each other, are not necessarily mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention with respect to one embodiment. It should also be understood that the positions or arrangements of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description set forth below is not intended to be limiting, and the scope of the present invention is limited only by the appended claims, along with the full scope equivalent to which such claims are entitled, if properly described. In the drawings, like reference numerals designate the same or similar functions throughout, and lengths, areas, thicknesses, and the like may be exaggerated for convenience.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings so that a person skilled in the art to which the present invention pertains can easily practice the present invention.

FIG. 1 is a perspective view schematically showing a solid oxide battery stack device according to an embodiment of the present invention, FIG. 2 is a perspective view showing a manifold in the solid oxide battery stack device of FIG. 1, and FIG. 3 is an exploded view showing a manifold in the solid oxide battery stack device of FIG. 1.

FIG. 4 is an image showing a fluid flow induction block in the manifold of FIG. 3, FIG. 5 is a perspective view showing the fluid flow in the manifold of FIG. 2, and FIG. 6 is a cross-sectional view showing the fluid flow in the manifold of FIG. 2.

Figure 7 is an image showing the flow of fluid when the fluid is introduced into the fluid receiving groove in the manifold of Figure 5, and Figure 8 is an image showing the flow of fluid when the fluid is discharged into the fluid receiving groove in the manifold of Figure 5.

FIG. 9 is an image showing the flow speed of fluid when the fluid is introduced into the fluid receiving groove in the manifold of FIG. 5, and FIG. 10 is an image showing the flow speed of fluid to the second fluid distribution section when the fluid is introduced into the fluid receiving groove in the manifold of FIG. 5.

In addition, FIG. 11 is a graph showing the flow velocity distribution of the fluid passing between a plurality of fragments in the second fluid distribution section of FIG. 10, and FIG. 12 is a cross-sectional view showing a plurality of balls filled in the fluid passage holes in the manifold of FIG. 2 as a first modified example of the solid oxide battery stack device of FIG. 1.

FIG. 13 is a cross-sectional view showing a metal mesh form filled in a fluid passage hole in a manifold of FIG. 2 as a second modified example of the solid oxide battery stack device of FIG. 1, and FIGS. 14 and 15 are images showing the inside of a fluid receiving groove in a fluid flow induction block as a third modified example of the solid oxide battery stack device of FIG. 1.

Referring to FIGS. 1 to 15, a manifold (40) according to the present invention includes a base plate (10) and a fluid flow guide block (32 or 34 or 36 or 38) so as to be positioned below a plurality of solid oxide fuel cells (SOFCs) or a plurality of solid oxide electrolysis cells (SOECs) in a solid oxide battery stack device (60) in FIGS. 1 and 2.

The above individual solid oxide fuel cell (SOFC) or individual solid oxide water electrolysis cell (SOEC) is illustrated as a cell unit (50) of FIG. 1 in a solid oxide battery stack device (60). The cell unit (50), although not illustrated in the drawing, includes a sealant, a cell frame, a separator, and a unit cell.

The above unit cell is composed of an anode, a solid electrolyte, a cathode, and a conductor connecting the anode and the cathode, although not shown in the drawing. The base plate (10) is composed of a square block in FIGS. 1 and 2. The fluid flow induction block (32 or 34 or 36 or 38) contacts an individual resistance surface (5) among four resistance surfaces (5) positioned along the square perimeter of the base plate (10). At this time, the fluid flow induction block (32 or 34 or 36 or 38) is cast and brazed to the individual resistance surfaces (5) of the base plate (10).

The above fluid flow induction block (32 or 34 or 36 or 38), considering FIGS. 3 and 4, has a fluid receiving groove (GP) located in the central region of the fluid flow induction block (32 or 34 or 36 or 38) between the base plate (10) and the fluid flow induction block (32 or 34 or 36 or 38), and includes a fluid passage hole (H1 or H2) located in the fluid receiving groove (GP) and sequentially positioned from the lower side toward the upper side of the fluid receiving groove (GP), a first fluid distribution part (22), and a second fluid distribution part (26).

The above base plate (10) has a flat shape on each of the four resistance surfaces (5) in FIGS. 2 and 3, and is in close contact with the fluid flow induction block (32 or 34 or 36 or 38) at the edge area of the fluid flow induction block (32 or 34 or 36 or 38).

The above fluid flow induction block (32 or 34 or 36 or 38) closes the lower side of the fluid receiving groove (GP), opens the upper side of the fluid receiving groove (GP), and opens the fluid receiving groove (GP) toward the base plate (10) in FIGS. 3 and 4.

The above fluid receiving groove (GP), considering FIGS. 3 and 4, gradually widens in an inverted triangular shape from the lower side to the upper side of the fluid receiving groove (GP) to form a groove space (space; G) between the fluid flow induction block (32 or 34 or 36 or 38) and the base plate (10).

The above fluid receiving groove portion (GP), when viewed from the base plate (10), considering FIGS. 3 and 4, gradually widens from the lower side of the fluid receiving groove portion (GP) toward the upper side in an inverted triangular shape, and has two corners higher than the other corner in the inverted triangular shape.

The above fluid receiving groove (GP), when formed in an inverted triangle shape in a fluid flow induction block (32 or 34 or 36 or 38) in FIG. 4, has a fluid distribution step (28) positioned along two hypotenuses of the inverted triangle shape and a groove side wall (27) surrounded by the two hypotenuses. The fluid distribution step (28), in FIG. 4, protrudes from the groove side wall (27) toward the base plate (10) and comes into contact with the base plate (10).

When the fluid receiving groove (GP) is formed in an inverted triangle shape in a fluid flow guide block (32 or 34 or 36 or 38) as shown in FIG. 4 and has a fluid distribution step (28) along two hypotenuses of the inverted triangle shape, the fluid passage hole (H1 or H2) penetrates the fluid flow guide block (32 or 34 or 36 or 38) at the lower side of the fluid receiving groove (GP), opens the groove side wall (27) of the fluid receiving groove (GP), and is surrounded by the fluid distribution step (28).

When the above fluid receiving groove (GP) is formed in an inverted triangle shape in a fluid flow induction block (32 or 34 or 36 or 38) as shown in FIG. 4 and has a fluid distribution step (28) along two hypotenuses of the inverted triangle shape and a groove side wall (27) between the two hypotenuses, the first fluid distribution part (22) connects two corners of the inverted triangle shape in FIG. 4 and protrudes less than the fluid distribution step (28) based on the groove side wall (27) while coming into contact with the fluid distribution step (28).

When the fluid receiving groove (GP) is formed in an inverted triangle shape in a fluid flow induction block (32 or 34 or 36 or 38) as shown in FIG. 4 and has fluid distribution steps (28) along two hypotenuses of the inverted triangle shape, the first fluid distribution section (22), when viewed from the base plate (10) in FIG. 4, divides the groove space (G) of the fluid receiving groove (GP) into a first groove space (G1) and a second groove space (G2) and connects the first groove space (G1) and the second groove space (G2) around the first fluid distribution section (22).

When the above fluid receiving groove (GP) is formed in an inverted triangle shape in a fluid flow induction block (32 or 34 or 36 or 38) as shown in FIG. 4 and has a groove side wall (27) between two hypotenuses of the inverted triangle shape, the second fluid distribution portion (26), considering FIGS. 3 and 4, protrudes further than the first fluid distribution portion (22) based on the groove side wall (27) on the first fluid distribution portion (22) and comes into contact with the base plate (10).

When the fluid receiving groove (GP) is formed in an inverted triangle shape in a fluid flow induction block (32 or 34 or 36 or 38) as shown in FIG. 4 and has a fluid distribution step (28) along two hypotenuses of the inverted triangle shape and a groove side wall (27) between the two hypotenuses, the second fluid distribution section (26) is formed of a plurality of segments (24) along the first fluid distribution section (22) while being spaced apart from the fluid distribution step (28) and the first fluid distribution section (22), as shown in FIG. 4.

When the fluid flow induction block (32 or 36) introduces fluid (F1 or F3) from the outside into the fluid passage hole (H1 or H3) of the fluid receiving groove (GP) in FIGS. 5 to 7, the first fluid distribution unit (22) causes the fluid to flow between the first fluid distribution unit (22) and the base plate (10) in the fluid receiving groove (GP) and between the first fluid distribution unit (22) and the fluid distribution step (28), as shown in FIGS. 4, 5, and 7, thereby sending the fluid (F1 or F3) to the second fluid distribution unit (26).

When the fluid flow induction block (32 or 36) introduces fluid (F1 or F3) from the outside into the fluid passage hole (H1 or H3) of the fluid receiving groove portion (GP) in FIGS. 5 to 7, the second fluid distribution portion (26) receives the fluid (F1 or F3) from the first fluid distribution portion (22) in the fluid receiving groove portion (GP) as shown in FIGS. 1, 4, and 7, and causes the fluid (F1 or F3) to flow between the plurality of segments (24) directly above the first fluid distribution portion (22) and between the fluid distribution step (28) and the outermost individual segment (24) around the fluid distribution step (28), thereby sending the fluid (F1 or F3) to the cell units (50) of the plurality of solid oxide fuel cells or the plurality of solid oxide water electrolysis cells.

When the fluid (F1 or F3) is introduced from the outside into the fluid passage hole (H1 or H3) of the fluid receiving groove (GP) in the above fluid flow induction block (32 or 36) as shown in FIGS. 5 to 7 and FIGS. 9 to 11, the second fluid distribution unit (26) causes the fluid (F1 or F3) to flow to the plurality of segments (24) at a greater velocity in the central region of the first fluid distribution unit (22) than in the edge regions of the first fluid distribution unit (22) during the flow of the fluid (F1 or F3) from the fluid passage hole (H1 or H3) in the fluid receiving groove (GP) toward the second fluid distribution unit (26).

When the fluid flow induction block (34 or 38) introduces fluid (F2 or F4) from the cell units (50) of a plurality of solid oxide fuel cells or a plurality of solid oxide water electrolysis cells in FIG. 1 and FIG. 5 and FIG. 6 and FIG. 8, the second fluid distribution unit (26) receives the fluid (F2 or F4) between the plurality of segments (24) directly above the first fluid distribution unit (22) and between the fluid distribution step (28) and the outermost individual segment (24) around the fluid distribution step (28) and sends the fluid (F2 or F4) to the first fluid distribution unit (22).

When the fluid (F2 or F4) is introduced from the cell units (50) of a plurality of solid oxide fuel cells or a plurality of solid oxide water electrolysis cells in FIG. 1 and FIG. 5 and FIG. 6 and FIG. 8, the first fluid distribution unit (22) receives the fluid (F2 or F4) from the second fluid distribution unit (26) in FIGS. 4 to 6 and FIG. 8 and causes the fluid (F2 or F4) to flow between the first fluid distribution unit (22) and the base plate (10) and between the first fluid distribution unit (22) and the fluid distribution step (28), thereby sending the fluid (F2 or F4) to the fluid passage hole (H2 or H4).

When the fluid (F2 or F4) is introduced from the cell units (50) of the plurality of solid oxide fuel cells or the plurality of solid oxide water electrolysis cells in FIG. 1 and FIG. 5 and FIG. 6 and FIG. 8, the second fluid distribution unit (26), although not shown in the drawings, causes the fluid (F2 or F4) to flow to the plurality of segments (24) at a greater velocity in the central region of the first fluid distribution unit (22) than in the two edge regions of the first fluid distribution unit (22) during the flow of the fluid (F2 or F4) from the second fluid distribution unit (26) in the fluid receiving groove (GP) toward the fluid passage hole (H2 or H4).

When the above fluid flow induction blocks (32 & 34, 36 & 38) are positioned on a pair of resistance surfaces (5) positioned in a straight line along the square perimeter of the base plate (10) with reference to FIGS. 3 and 5, and on the remaining pair of resistance surfaces (5) positioned in a straight line, the fluid passage hole (H1 or H2) and the first fluid distribution portion (22) and the second fluid distribution portion (26) have a larger size on the remaining pair of resistance surfaces (5) positioned in a straight line than on the pair of resistance surfaces (5) positioned in a straight line.

Meanwhile, as a first modified example of the solid oxide battery stack device (60) according to the present invention, the fluid flow induction block (32 or 36) in the manifold (44) may include at least one of a stainless steel ball (ball; 50) and a ceramic ball (50) filled in a fluid passage hole (H1 or H2) in the fluid receiving groove portion (GP), as shown in FIG. 12. Similarly, the fluid flow induction block (34 or 38) in the manifold (44) may include at least one of a stainless steel ball (50) and a ceramic ball (50) filled in a fluid passage hole (H1 or H2) in the fluid receiving groove portion (GP), although not shown in the drawing.

In addition, as a second modified example of the solid oxide battery stack device (60) according to the present invention, the fluid flow guide block (32 or 36) in the manifold (48) may include a metal mesh foam (60) that fills the fluid passage hole (H1 or H2) in the fluid receiving groove portion (GP), as shown in FIG. 13. Similarly, the fluid flow guide block (34 or 38) in the manifold (48) may include a metal mesh foam (60) that fills the fluid passage hole (H1 or H2) in the fluid receiving groove portion (GP), although not shown in the drawing.

Similarly, the manifold (48) fluid flow induction block (32 or 34 or 36 or 38), although not shown in the drawing, may include a metal mesh form filled in the fluid passage hole (H1 or H2) in the fluid receiving groove (GP), and at least one of a stainless steel ball and a ceramic ball, considering FIGS. 12 and 13.

Meanwhile, as a third modified example of the solid oxide battery stack device (60) according to the present invention, when the fluid flow induction block (32 or 34 or 36 or 38) in the manifold (49) uses the fluid passage holes (H1 or H2) on the individual resistance surfaces of the four resistance surfaces (5) along the square perimeter of the base plate (10) with respect to the base plate (10) in FIGS. 14 and 15 to introduce or discharge fluid (not shown in the drawings), the first fluid distribution unit (22) and the second fluid distribution unit (26) may have a larger occupied area in the fluid flow block (34 or 38) having the fluid passage holes (H1 or H2) used for discharging fluid than in the fluid flow induction block (32 or 36) having the fluid passage holes (H1 or H2) used for introducing fluid.

For example, in a fluid flow induction block (32 or 36) having a fluid passage hole (H1 or H2) used for introducing fluid, the first fluid distribution unit (22) has a first length (L1) and a first width (W1) in FIG. 14. In contrast, the first fluid distribution unit (22) used for discharging fluid has a larger size than the first fluid distribution unit (22) used for introducing fluid, considering FIGS. 14 and 15.

Also, in a fluid flow induction block (32 or 36) having a fluid passage hole (H1 or H2) used for introducing fluid, the second fluid distribution unit (26), in FIG. 14, has a second length (L2) and a second width (W2) in each individual fragment (24) of the plurality of fragments (24) and separates two neighboring fragments (24) by a predetermined distance (S). Alternatively, the second fluid distribution unit (26) used for discharging fluid may have a size partially larger than the second fluid distribution unit (26) used for introducing fluid in the plurality of fragments (24), considering FIGS. 14 and 15.

5 resistance surface, 10; base plate
32, 34, 36, 38; induction block, 40; manifold
GP; Fluid receiving groove, H1, H2; Fluid passage hole

Claims (22)

In a manifold positioned below a plurality of solid oxide fuel cells (SOFCs) or a plurality of solid oxide electrolysis cells (SOECs) in a solid oxide battery stack device,
A base plate made of square blocks; and
A fluid flow inducing block is included that contacts an individual resistance surface among four resistance surfaces positioned along the square perimeter of the base plate,
The above fluid flow induction block is,
Having a fluid receiving groove located in the central region of the fluid flow induction block between the base plate and the fluid flow induction block,
A manifold comprising a fluid passage hole, a first fluid distribution portion, and a second fluid distribution portion, which are positioned sequentially from the lower side to the upper side of the fluid receiving groove portion and located in the fluid receiving groove portion.
In the first paragraph,
The above base plate,
In the above four resistance planes, each individual resistance plane has a flat shape,
A manifold in close contact with the fluid flow inducing block at the edge region of the fluid flow inducing block.
In the first paragraph,
The above fluid flow induction block is,
Close the lower side of the fluid receiving groove,
Opening the upper side of the fluid receiving groove,
A manifold having the fluid receiving groove portion opened toward the base plate.
In the first paragraph,
The above fluid receiving groove is,
A manifold that gradually widens in an inverted triangular shape from the lower side of the fluid receiving groove portion toward the upper side to form a groove space between the fluid flow inducing block and the base plate.
In the first paragraph,
The above fluid receiving groove is,
A manifold, wherein when viewed from the base plate, the fluid receiving groove gradually widens in an inverted triangular shape from the lower side toward the upper side, and two corners of the inverted triangular shape are higher than the remaining one corner.
In the first paragraph,
The above fluid receiving groove is,
When the fluid flow induction block is formed in an inverted triangular shape, it has a fluid distribution step positioned along two hypotenuses of the inverted triangular shape and a groove side wall surrounded by the two hypotenuses.
The above fluid dispersion step is,
A manifold protruding from the home side wall toward the base plate and contacting the base plate.
In the first paragraph,
The above fluid receiving groove,
When the fluid flow induction block is formed in an inverted triangular shape and has fluid distribution steps along two hypotenuses of the inverted triangular shape,
The above fluid passage hole is,
A manifold having a fluid flow guide block penetrating the lower side of the fluid receiving groove portion, opening a groove side wall of the fluid receiving groove portion, and surrounded by the fluid distribution step.
In the first paragraph,
The above fluid receiving groove,
When the fluid flow induction block is formed in an inverted triangular shape and has a fluid distribution step along two hypotenuses of the inverted triangular shape and a groove side wall between the two hypotenuses,
The above first fluid distribution unit,
A manifold connecting two corners of the above inverted triangle shape and contacting the above fluid distribution step, protruding less than the above fluid distribution step based on the above groove side wall.
In the first paragraph,
The above fluid receiving groove,
When the fluid flow induction block is formed in an inverted triangular shape and has fluid distribution steps along two hypotenuses of the inverted triangular shape,
The above first fluid distribution unit,
A manifold which divides the groove space of the fluid receiving groove portion into a first groove space and a second groove space when viewed from the above base plate, and connects the first groove space and the second groove space around the first fluid distribution portion.
In the first paragraph,
The above fluid receiving groove,
When the fluid flow induction block is formed in an inverted triangular shape and has a groove side wall between two hypotenuses in the inverted triangular shape,
The second fluid distribution unit,
A manifold that protrudes further than the first fluid distribution section based on the groove sidewall on the first fluid distribution section and contacts the base plate.
In the first paragraph,
The above fluid receiving groove,
When the fluid flow induction block is formed in an inverted triangular shape and has a fluid distribution step along two hypotenuses of the inverted triangular shape and a groove side wall between the two hypotenuses,
The second fluid distribution unit,
A manifold comprising a plurality of segments along the first fluid distribution section and spaced apart from the fluid distribution step and the first fluid distribution section.
In the first paragraph,
The above fluid flow induction block,
When fluid is introduced from the outside into the fluid passage hole of the fluid receiving groove,
The above first fluid distribution unit,
A manifold that allows the fluid to flow between the first fluid distribution section and the base plate in the fluid receiving groove and between the first fluid distribution section and the fluid distribution step to send the fluid to the second fluid distribution section.
In the first paragraph,
The above fluid flow induction block,
When fluid is introduced from the outside into the fluid passage hole of the fluid receiving groove,
The second fluid distribution unit,
A manifold for receiving the fluid from the first fluid distribution section in the fluid receiving groove section, causing the fluid to flow between the plurality of segments directly above the first fluid distribution section and between the fluid distribution steps and the outermost individual segments around the fluid distribution steps, thereby sending the fluid to the cell units of the plurality of solid oxide fuel cells or the plurality of solid oxide water electrolysis cells.
In the first paragraph,
The above fluid flow induction block,
When fluid is introduced from the outside into the fluid passage hole of the fluid receiving groove,
The second fluid distribution unit,
A manifold which causes the fluid to flow through the plurality of segments at a greater velocity in the central region of the first fluid distribution section than in the peripheral regions of the first fluid distribution section during the flow of the fluid from the fluid passage holes in the fluid receiving groove section toward the second fluid distribution section.
In the first paragraph,
The above fluid flow induction block,
When introducing a fluid from a cell unit of the above plurality of solid oxide fuel cells or plurality of solid oxide water electrolysis cells,
The second fluid distribution unit,
A manifold for receiving said fluid between a plurality of segments immediately above said first fluid distribution section and between said fluid distribution section and the outermost individual segment around said fluid distribution section, and sending said fluid to said first fluid distribution section.
In the first paragraph,
The above fluid flow induction block,
When introducing a fluid from a cell unit of the above plurality of solid oxide fuel cells or plurality of solid oxide water electrolysis cells,
The above first fluid distribution unit,
A manifold that receives the fluid from the second fluid distribution unit and causes the fluid to flow between the first fluid distribution unit and the base plate and between the first fluid distribution unit and the fluid distribution step, thereby sending the fluid to the fluid passage hole.
In the first paragraph,
The above fluid flow induction block,
When introducing a fluid from a cell unit of the above plurality of solid oxide fuel cells or plurality of solid oxide water electrolysis cells,
The second fluid distribution unit,
A manifold that causes the fluid to flow through the plurality of segments at a greater velocity in the central region of the first fluid distribution section than in the edge regions of the first fluid distribution section during the flow of the fluid from the second fluid distribution section toward the fluid passage holes in the fluid receiving groove.
In the first paragraph,
The above fluid flow induction block,
When positioned along the square perimeter of the base plate with the base plate as a reference, a pair of resistance surfaces positioned in a straight line and the remaining pair of resistance surfaces positioned in a straight line,
The above fluid passage hole, the first fluid distribution unit, and the second fluid distribution unit,
A manifold having a larger size of the resistance surfaces positioned in the same straight line than the resistance surfaces positioned in the same straight line of the other pair.
In the first paragraph,
The above fluid flow induction block is,
A manifold comprising at least one of a stainless steel ball and a ceramic ball filled in the fluid passage hole in the fluid receiving groove.
In the first paragraph,
The above fluid flow induction block is,
A manifold comprising a metal mesh foam filled in the fluid passage hole in the fluid receiving groove.
In the first paragraph,
The above fluid flow induction block is,
A manifold comprising a metal mesh form filled in the fluid passage hole in the fluid receiving groove, and at least one of a stainless steel ball and a ceramic ball.
In the first paragraph,
The above fluid flow induction block,
When the fluid passage holes on the individual resistance surfaces positioned in a pair of straight lines along the square perimeter of the base plate based on the base plate are used as introduction or discharge of fluid,
The first fluid distribution unit and the second fluid distribution unit are,
A manifold having a larger occupied area in a fluid flow guide block having fluid passage holes used for discharging fluid than in a fluid flow guide block having fluid passage holes used for introducing fluid.