KR102688537B1 - Electrode module and electrochemical system including the same - Google Patents

Abstract

An electrode module and an electrochemical system including the same are disclosed. The disclosed electrode module includes an inlet of a first fluid, a recuperator in fluid communication with the inlet of the first fluid, an electric heater in fluid communication with the recuperator, a supply pipe of the first fluid in fluid communication with the heater, and a supply pipe of the first fluid. It includes a stack seating portion in fluid communication with the stack seating portion, a second fluid discharge means in fluid communication with the stack seating portion, and a second fluid discharge port in fluid communication with the second fluid discharge means via the recuperator, The recuperator is configured to exchange heat between the first fluid and the second fluid.

Description

Electrode module and electrochemical system including the same}

An electrode module and an electrochemical system including the same are disclosed. More specifically, an expandable electrode module integrating a manifold for parallel connection of a solid oxide fuel cell or stack, a high-temperature recuperator for maintaining high-temperature operation, and an electric heater, and an electrochemical system including the same are disclosed.

There are many commercialization cases of existing hot boxes for high-temperature fuel cells (which include natural/city gas reformers and burners, etc.), but they are used for pure hydrogen fuel cells or water electrolysis that have small capacities and do not include reformers and burners. There was a problem in that it was impossible to use.

The capacity of the high-temperature stack currently being applied in the demonstration stage is 3 to 10 kW, and hydrogen productivity is significantly lower than that of the low-temperature stack, which has a capacity of 1 MW to 10 MW. In addition, the capacity of the high-temperature water electrolysis hot box currently in the demonstration stage is tens of kW domestically and hundreds kW overseas, which is significantly below the level of commercialization.

Since recuperators and electric heaters, including high-temperature stacks, operate at high temperatures of 550 to 800 degrees Celsius, heat loss is significant when exposed to outdoor air, and hydrogen production efficiency rapidly decreases.

In addition, the hot boxes currently in use often apply recuperators, electric heaters, and high-temperature piping networks to the outside of the insulation, so they do not have a commercializable level of hydrogen production efficiency.

One embodiment of the present invention provides an expandable electrode module that integrates a manifold for parallel connection of a solid oxide fuel cell or stack, a high-temperature recuperator for maintaining high-temperature operation, and an electric heater.

Another embodiment of the present invention provides an electrochemical system including the electrode module.

One aspect of the present invention is,

an inlet of a first fluid;

a recuperator in fluid communication with the inlet of the first fluid;

an electric heater in fluid communication with the recuperator;

a supply pipe for a first fluid in fluid communication with the electric heater;

a stack seating portion in fluid communication with the first fluid supply pipe;

a second fluid discharge means in fluid communication with the stack seating portion; and

It includes a second fluid discharge port in fluid communication with the second fluid discharge means via the recuperator,

The recuperator provides an electrode module configured to heat exchange the first fluid and the second fluid.

The inlet of the first fluid and the outlet of the second fluid may be arranged to be fluidly separated from each other and be in close contact with each other.

The stack seating portion is plural, and in this case, the plurality of stack seating portions are divided into a first row of stack seating portions and a second row of stack seating portions arranged left and right symmetrically, and the supply pipe of the first fluid is connected to the first row of stack seating portions. A pair of seats is disposed in parallel between the seats and the stack seats of the second row, and the discharge means for the second fluid is located on the outside of the stack seats of the first row and the A pair of stack seating parts in the second row may be arranged in parallel, one by one, on the outside.

Another aspect of the present invention is,

The electrode module described above; and

An electrochemical system comprising a stack is provided.

Another aspect of the present invention is,

steam inlet;

an anode recuperator in fluid communication with the steam inlet;

a fuel electrode heater in fluid communication with the fuel electrode recuperator;

a steam supply pipe in fluid communication with the anode heater;

a fuel electrode stack seating portion in fluid communication with the steam supply pipe;

A steam supply nozzle in fluid communication with the anode stack seating portion;

a hydrogen discharge nozzle in fluid communication with the anode stack seating portion;

a hydrogen discharge pipe in fluid communication with the anode stack seating portion; and

It includes a hydrogen outlet in fluid communication with the hydrogen discharge pipe via the anode recuperator,

The anode recuperator provides an electrode module configured to heat exchange steam introduced through the steam inlet and hydrogen discharged from the hydrogen discharge pipe.

The anode stack seating portion includes a steam supply passage and a hydrogen discharge passage that are fluidically separated from each other, the steam supply passage is configured to connect the steam supply pipe and the steam supply nozzle, and the hydrogen discharge passage is configured to connect the steam supply pipe and the steam supply nozzle. and may be configured to connect the hydrogen discharge pipe to each other.

The steam supply nozzle and the hydrogen discharge nozzle may each be disposed on an upper surface of the anode stack seating portion.

Another aspect of the present invention is,

Outdoor air inlet;

an air cathode recuperator in fluid communication with the outside air inlet;

an air cathode heater in fluid communication with the air cathode recuperator;

an external air supply pipe in fluid communication with the air electrode heater;

an air electrode stack seating portion in fluid communication with the external air supply pipe;

an exhaust passage in fluid communication with the air electrode stack seating portion; and

An exhaust port in fluid communication with the exhaust passage via the air cathode recuperator,

The air cathode recuperator provides an electrode module configured to heat exchange between outdoor air introduced through the outdoor air inlet and exhaust gas discharged from the exhaust passage.

The air electrode stack seating portion may be plural, and in this case, the electrode module may further include a plurality of air guides configured to individually separate the plurality of air electrode stack seating portions along with the external air supply pipe.

The electrode module may further include a compression rod disposed between two adjacent air guides.

Another aspect of the present invention is,

An anode module including the above-described electrode module;

An air electrode module including another electrode module described above; and

An electrochemical system comprising a stack is provided.

The air electrode module is disposed on the fuel electrode module, and the electrochemical system may further include a pair of side panels disposed on the fuel electrode module to cover one side and the other side of the air electrode module, respectively.

The air electrode module may further include a compression rod disposed to penetrate both the air electrode module and the fuel electrode module.

The electrochemical system includes a first nut coupled to one end of the compression rod on the air electrode module side, a spring coupled to the other end of the compression rod on the anode module side, and a first nut coupled to the other end of the compression rod on the anode module side to compress the spring. It may further include a coupled second nut.

The electrochemical system may be a solid oxide fuel cell system or a solid oxide water electrolysis system.

An electrode module and an electrochemical system including the same according to an embodiment of the present invention integrate a high-efficiency solid oxide fuel cell or a high-temperature solid oxide fuel cell or water electrolysis system, which is a water electrolysis technology, to provide a high-capacity solid oxide fuel cell or water electrolysis system. Construction costs can be greatly reduced, and the thermal efficiency of the solid oxide fuel cell or water electrolysis system can also be maximized by increasing the insulation effect due to integration.

Additionally, the electrode module according to one embodiment of the present invention is manufactured in a platform form and can connect or stack multiple stacks in series and/or parallel.

1 is a perspective view schematically showing an anode module as an electrode module according to an embodiment of the present invention.
Figure 2 is a plan view of an electrochemical system including a stacked structure of an anode module and an air electrode module as electrode modules according to embodiments of the present invention.
Figure 3 is a perspective view of an electrochemical system including a stacked structure of an anode module and an air electrode module as electrode modules according to embodiments of the present invention.
FIG. 4 is a diagram illustrating an additional stack installed in the electrochemical system of FIG. 3.
Figure 5 is a side view of the electrochemical system of Figure 4.
FIG. 6 is a diagram illustrating only the anode current collectors, bus bars, and air electrode current collectors in the electrochemical system of FIG. 5.
FIG. 7 is a diagram illustrating an additional side panel installed in the electrochemical system of FIG. 4.
FIG. 8 is a diagram illustrating an additional compression plate installed in the electrochemical system of FIG. 7.
FIG. 9 is a side view showing the electrochemical system of FIG. 8 compressed with a stack compression system.
FIG. 10 is a diagram illustrating the electrochemical system of FIG. 7 with only the stack removed, and is a diagram for explaining the flow of fluid in the air electrode module.
FIG. 11 is an enlarged view of the air guide installation part in the electrochemical system of FIG. 10.
Figure 12 is a diagram showing several connection methods of an electrochemical system according to an embodiment of the present invention.

Hereinafter, an electrode module and an electrochemical system including the same according to an embodiment of the present invention will be described in detail.

In this specification, “outside air” refers to all air existing between the outside air inlet and the stack, and “exhaust” refers to all air existing between the stack and the exhaust port.

Also, in this specification, “fluid communication” means that two or more members are connected so that fluid can flow through them.

Also, as used herein, “fluidly separated” means that two or more members are configured so that fluid does not flow from one member to the other member.

Also, in this specification, “arranged in parallel” means that two or more members are arranged so that their smooth surfaces (widest surfaces) face each other based on an imaginary vertical line.

Also, in this specification, “arranged in series” means that two or more members are arranged side by side in the longitudinal direction on the same straight line so as to extend in one direction.

Also, in this specification, “upper part” refers to a part of an object located relatively in the opposite direction of gravity, and “lower part” refers to a part of the object relatively located in the forward direction of gravity.

Also, in this specification, “top surface” means the surface visible when looking down at an object from the top to the bottom, and “bottom surface” means the surface visible when looking up the object from the bottom to the top.

The electrode module according to one embodiment of the present invention includes an inlet of the first fluid, a recuperator, an electric heater, a supply pipe of the first fluid, a stack seating portion, a discharge means of the second fluid, and an electric heater of the second fluid. Includes outlet.

The recuperator may be in fluid communication with the inlet of the first fluid.

Additionally, the recuperator may be configured to exchange heat between the first fluid and the second fluid.

The electric heater may be in fluid communication with the recuperator.

The supply pipe of the first fluid may be in fluid communication with the electric heater.

The stack seating portion may be in fluid communication with the supply pipe of the first fluid.

In addition, the stack seating portions may be plural, and in this case, the plurality of stack seating portions may be divided into a first row of stack seating portions and a second row of stack seating portions arranged left and right symmetrically.

The stack seating units in the first row and the stack seating units in the second row may each include a plurality of stack seating units arranged in a row. In this case, a pair of supply pipes for the first fluid may be arranged in parallel between the stack seating parts in the first row and the stack seating parts in the second row. Also, in this case, the discharge means for the second fluid are arranged in parallel in pairs, one on the outside of the stack seating parts in the first row and the other on the outside of the stack seating parts in the second row, when observed with respect to the supply pipe of the first fluid. It can be.

The second fluid discharge means may be in fluid communication with the stack seating portion.

Additionally, the outlet of the second fluid may be in fluid communication with the discharge means of the second fluid via the recuperator. Specifically, the outlet of the second fluid is in fluid communication with the recuperator and the recuperator is in fluid communication with the discharge means of the second fluid, so that the outlet of the second fluid is in fluid communication with the discharge means of the second fluid. There may be fluid communication.

The inlet of the first fluid and the outlet of the second fluid may be arranged to be fluidly separated from each other and be in close contact with each other.

Another embodiment of the present invention provides an electrochemical system including the electrode module and stack described above.

The electrode module may be an electrode module applied to a solid oxide fuel cell system or a solid oxide water electrolysis system, and the electrochemical system may be a solid oxide fuel cell system or a solid oxide water electrolysis system. Hereinafter, the above-described electrode module will be described in detail based on the electrode module applied to the solid oxide water electrolysis system with reference to the drawings, but the above-described electrode module can be applied to the solid oxide fuel cell in substantially the same way, which is related to the technology. This is self-evident to those skilled in the art.

Figure 1 is a perspective view schematically showing an anode module 110 as an electrode module according to an embodiment of the present invention. In Figure 1, two anode modules 110 with the same structure and function are arranged in opposite directions.

Referring to FIG. 1, the anode module 110 includes a steam inlet 111, an anode recuperator 112, an anode heater 113, a steam supply pipe 114, an anode stack seating portion (STS1), and a steam supply nozzle (N1). ), hydrogen discharge nozzle (N2), hydrogen discharge pipe 116, and hydrogen discharge port 117.

The anode recuperator 112 may be in fluid communication with the steam inlet 111.

Additionally, the anode recuperator 112 may be configured to exchange heat between steam introduced through the steam inlet 111 and hydrogen discharged from the hydrogen discharge pipe 116. Specifically, the anode recuperator 112 may be configured to exchange heat between steam introduced through the steam inlet 111 and hydrogen discharged from the hydrogen discharge pipe 116 to heat the steam and cool the hydrogen. Accordingly, energy efficiency can be maximized through heat exchange between steam flowing in through the steam inlet 111 and hydrogen discharged from the hydrogen discharge pipe 116, and high-temperature fluid is discharged to the outside of the insulation material 200, which will be described later. By not doing so, heat loss due to outdoor air can be minimized.

The anode heater 113 may be in fluid communication with the anode recuperator 112. Specifically, the anode heater 113 may be configured to additionally heat steam supplied through the anode recuperator 112. More specifically, the anode heater 113 is built at the end of the anode recuperator 112 and maintains the temperature of the fluid uniformly even under various operating conditions (heating/neutrality/endothermic) of the stack 130, which will be described later, thereby maintaining the stack 130. ) The lifespan of the stack 130 can be increased by actively controlling the temperature.

The steam supply pipe 114 may be in fluid communication with the anode heater 113. Specifically, the steam supply pipe 114 may be configured to re-supply steam supplied through the anode heater 113 to the anode stack seating portion (STS1).

The anode stack seating portion STS1 may be in fluid communication with the steam supply pipe 114.

Additionally, there may be a plurality of anode stack seating portions (STS1). In this case, the plurality of fuel electrode stack seating parts STS1 may be divided into a first row of fuel electrode stack seating parts STS1 and a second row of fuel electrode stack seating parts STS1 arranged symmetrically left and right.

The first row of fuel electrode stack seating parts STS1 and the second row of fuel electrode stack seating parts STS1 may each include a plurality of fuel electrode stack seating parts STS1 arranged in a row. In this case, a pair of steam supply pipes 114 may be arranged in parallel between the anode stack seating parts STS1 in the first row and the anode stack seating parts STS1 in the second row. Also, in this case, the hydrogen discharge pipe 116 is located in pairs, one on the outside of the anode stack seating portions STS1 in the first row and the other on the outside of the anode stack seating portions STS1 in the second row when observed with the steam supply pipe 114 as the reference. Can be placed in parallel.

Additionally, the anode stack seating portion STS1 may include a steam supply passage (not shown) and a hydrogen discharge passage (not shown) that are fluidically separated from each other.

The steam supply passage may be configured to connect the steam supply pipe 114 and the steam supply nozzle (N1) to each other. Therefore, the steam supplied to the anode module 110 through the steam inlet 111 is the steam formed in the anode recuperator 112, the anode heater 113, the steam supply pipe 114, and the anode stack seating portion STS1. After sequentially passing through the supply passage, it can be supplied to the stack 130, which will be described later, disposed on the upper part of the anode stack seating portion STS1 through the steam supply nozzle N1 (see solid arrow in FIG. 1).

The hydrogen discharge passage may be configured to connect the hydrogen discharge nozzle (N2) and the hydrogen discharge pipe 116 to each other. Therefore, the hydrogen discharged from the stack 130, which will be described later, passes through the hydrogen discharge nozzle N2 and sequentially through the hydrogen discharge passage formed in the anode stack seating portion STS1, the hydrogen discharge pipe 116, and the anode recuperator 112. Afterwards, the hydrogen can be discharged to the outside of the anode module 110 through the hydrogen outlet 117 (see the dotted arrow in FIG. 1).

Additionally, the steam supply nozzle (N1) and the hydrogen discharge nozzle (N2) may each be disposed on the upper surface of the anode stack seating portion (STS1). For example, a row of steam supply nozzles (N1) and a row of hydrogen discharge nozzles (N2) may be alternately arranged on the upper surface of the anode stack seating portion (STS1).

Additionally, the anode module 110 may further include a plurality of legs 118.

FIG. 2 is a plan view of an electrochemical system 100 including a stacked structure of an anode module 110 and an air electrode module 120 as electrode modules according to embodiments of the present invention, and FIG. 3 is a plan view of embodiments of the present invention. This is a perspective view of the electrochemical system 100 including a stacked structure of the anode module 110 and the cathode module 120 as electrode modules according to . In Figures 2 and 3, two stacked structures (i.e., stacked structures of the anode module 110 and the air electrode module 120) with the same structure and function are arranged in opposite directions.

Referring to FIGS. 2 and 3 , the air electrode module 120 may be disposed on the fuel electrode module 110 .

In addition, the air electrode module 120 includes an external air inlet 121, an air electrode recuperator 122, an air electrode heater 123, an external air supply pipe 124, an air electrode stack seating part (STS2), an exhaust passage 126, and an exhaust port 127. ) includes.

The air cathode recuperator 122 may be in fluid communication with the outside air inlet 121.

Additionally, the air cathode recuperator 122 may be configured to exchange heat between outdoor air introduced through the outdoor air inlet 121 and exhaust gas discharged from the exhaust passage 126. Specifically, the air cathode recuperator 122 may be configured to heat the outdoor air and cool the exhaust gas by exchanging heat between the outdoor air introduced through the outdoor air inlet 121 and the exhaust gas discharged from the exhaust passage 126. Accordingly, energy efficiency can be maximized through heat exchange between outside air introduced through the outside air inlet 121 and exhaust discharged from the exhaust passage 126, and high-temperature fluid is discharged to the outside of the insulation material 200, which will be described later. By not doing so, heat loss due to outdoor air can be minimized.

The air cathode heater 123 may be in fluid communication with the air cathode recuperator 122. Specifically, the air electrode heater 123 may be configured to additionally heat the outdoor air supplied through the air electrode recuperator 122. More specifically, the air cathode heater 123 is built at the end of the air cathode recuperator 122 and maintains the temperature of the fluid uniformly even under various operating conditions (heating/neutrality/endothermic) of the stack 130, which will be described later. The lifespan of the stack 130 can be increased by actively controlling the temperature of the stack 130.

The outside air supply pipe 124 may be in fluid communication with the air electrode heater 123. Specifically, the outside air supply pipe 124 may be configured to re-supply outside air supplied through the air electrode heater 123 to the air electrode stack seating portion (STS2).

The air electrode stack seating portion STS2 may be in fluid communication with the external air supply pipe 124.

Additionally, there may be a plurality of air electrode stack seating units (STS2). In this case, each air electrode stack seating portion (STS2) is an internal space surrounded by a plurality of air guides 125 and an external air supply pipe 124, which will be described later, and may be configured to accommodate stacks 130, which will be described later, one by one.

Additionally, the air gap module 120 may include a plurality of air guides 125. These plurality of air guides 125 may be configured to individually separate the plurality of air electrode stack seating portions STS2 together with the external air supply pipe 124. Accordingly, the air electrode stack seating parts STS2 may be divided into a first row of air electrode stack seating parts STS2 and a second row of air electrode stack seating parts STS2 arranged symmetrically left and right. Additionally, the plurality of air guides 125 serve to evenly distribute outdoor air to the plurality of air electrode stack seating parts STS2.

The first row of air electrode stack seating parts STS2 and the second row of air electrode stack seating parts STS2 may each include a plurality of air electrode stack seating parts STS2 arranged in a row. In this case, a pair of external air supply pipes 124 may be arranged in parallel between the air electrode stack seating parts STS2 in the first row and the air electrode stack seating parts STS2 in the second row. Also, in this case, the exhaust passage 126 has a pair of exhaust passages 126, one on the outside of the air electrode stack seating parts STS2 in the first row and the other on the outside of the air electrode stack seating parts STS2 in the second row when observed from the outside air supply pipe 124. Can be placed in parallel.

The exhaust passage 126 may be an internal space between the stack 130 and the side panel 150, which will be described later (see FIGS. 2 to 4, 7, 8, and 10).

Additionally, the air gap module 120 may further include a compression rod 128. This compression rod 128 is disposed between two adjacent air guides 125, and may be disposed to penetrate both the anode module 110 and the air electrode module 120.

FIG. 4 is a diagram illustrating a stack 130 additionally installed in the electrochemical system 100 of FIG. 3 .

Referring to FIG. 4 , the stack 130 may be seated in an internal space surrounded by the anode stack seating portion STS1, a plurality of air guides 125, and the external air supply pipe 124 of the anode module 110. As a result, a plurality of stacks 130 can be arranged in parallel in n columns (n is an integer of 1 or more), and theoretically an infinite number of stacks 130 can be arranged. This stack 130 may be a water electrolyzer stack (see https://en.wikipedia.org/wiki/Solid_oxide_electrolyzer_cell ).

FIG. 5 is a side view of the electrochemical system 100 of FIG. 4, and FIG. 6 shows fuel electrode current collectors (FCC), bus bars 140, and air electrode current collectors (ACC) in the electrochemical system 100 of FIG. 5. ) is a drawing showing only excerpts.

Referring to Figures 5 and 6, the bus bars 140 are connected to the air cathode current collector (ACC) and the fuel electrode current collector (FCC) to prevent interference with the air cathode module 120 after installation of the air cathode module 120. It serves to electrically connect in a “Z” shape.

FIG. 7 is a diagram showing a side panel 150 additionally installed in the electrochemical system 100 of FIG. 4 .

As shown in FIG. 7, the electrochemical system 100 may further include a side panel 150.

The side panel 150 may be disposed on the anode module 110 to cover one side and the other side of the cathode module 120, respectively. This side panel 150 serves to block the inside of the stack 130 from the outside.

FIG. 8 is a diagram illustrating an additional compression plate 160 installed in the electrochemical system 100 of FIG. 7 .

Referring to FIG. 8 along with FIG. 7 , the compression plate 160 may be arranged to cover the stack 130 . This compression plate 160 serves to prevent the stack 130 from being damaged when the electrochemical system 100 is compressed up and down.

FIG. 9 is a side view showing the electrochemical system 100 of FIG. 8 compressed with a stack compression system (128, 160, NT1, SP, NT2, etc.).

The stack compression system (128, 160, NT1, SP, NT2, etc.) provides compression force for sealing the stack 130 and its surroundings, and serves to maintain the durability of the stack 130 even during high-temperature thermal expansion or contraction. .

Referring to FIG. 9 , the electrochemical system 100 may further include a first nut (NT1), a spring (SP), and a second nut (NT2).

The first nut NT1 may be coupled to one end of the compression rod 128 on the air gap module 120 side.

The spring SP may be coupled to the other end of the anode module 110.

The second nut NT2 may be coupled to the other end of the compression rod 128 to compress the spring SP.

Specifically, in the electrochemical system 100 of FIG. 8, the anode module 110 and the air electrode module 120 are aligned, and then a washer (not shown) and a nut (NT1) are sequentially fastened to the upper part of the compression rod 128. Then, the electrochemical system 100 can be compressed up and down by sequentially fastening a spring (SP), a washer (not shown), and a nut (NT2) to the lower part of the compression rod 128. In this way, by compressing the electrochemical system 100 with an appropriate compression force, leakage of fluid from the inside of the stack 130 to the outside can be prevented.

FIG. 10 is a diagram illustrating the electrochemical system 100 of FIG. 7 with only the stack 130 removed, and is a diagram for explaining the flow of fluid in the air electrode module 120.

Referring to FIG. 10, the outdoor air supplied to the air cathode module 120 through the outdoor air inlet 121 is connected to the air cathode recuperator 122, the air cathode heater 123, the outdoor air supply pipe 124, and the air cathode stack seating portion (STS2). After sequentially passing through, it can be supplied to the stack 130 seated on the cathode stack seating portion STS2 (see solid arrow in FIG. 10).

In addition, the exhaust discharged from the stack 130 sequentially passes through the air cathode stack seating part (STS2), the exhaust passage 126, and the air cathode recuperator 122, and then goes to the outside of the air cathode module 120 through the exhaust port 127. may be discharged (see dotted arrow in Figure 10).

FIG. 11 is an enlarged view of the air guide installation part in the electrochemical system 100 of FIG. 10.

Referring to FIG. 11, the air guides 125 are arranged in pairs, and two compression rods 128 may be placed in the space between the pair of air guides 125. Additionally, in order to secure installation space for the compression rod 128, each air guide 125 may include a bent portion.

In addition, although not shown in the drawing, the electrochemical system 100 may further include a power cable and connection terminal for supplying power to the stack 130, and a sensing cable and connection terminal for monitoring the stack 130. You can.

The anode module 110, the air electrode module 120, and the electrochemical system 100 according to an embodiment of the present invention having the above configuration can maintain thermal homeostasis through integration of the components, and the stacks 130 ) is equipped with a piping network for equal fuel and air distribution. That is, the anode module 110, the air electrode module 120, and the electrochemical system 100 are configured so that the components are arranged in as small a space as possible for high-capacity integration and are easy to mount within the insulation material 200, and are designed to be industrialized in the future. It has a shape that allows two or more pieces to be stacked.

Figure 12 is a diagram showing several connection methods of the electrochemical system 100 according to an embodiment of the present invention. In Figure 12, reference numeral "100" represents the electrochemical system, "N" represents nozzles such as fluid inlet and fluid outlet, and "200" represents thermal insulation.

Referring to (a) of FIG. 12, a pair of electrochemical systems 100 surrounded by an insulating material 200 are connected in series in opposite directions so that the nozzles N are located farthest from each other. Here, the insulation material 200 can cover the electrochemical system 100 to minimize heat loss of the electrochemical system 100 and thermal shock of the stack 130 due to external air.

Referring to (b) of FIG. 12, a pair of electrochemical systems 100 surrounded by an insulating material 200 are connected in parallel.

Referring to (c) of FIG. 12, a pair of electrochemical systems 100 surrounded by an insulating material 200 are connected in series in opposite directions so that the nozzles N are located closest to each other.

Referring to (d) of FIG. 12, a pair of electrochemical systems 100 surrounded by an insulating material 200 are connected in series in opposite directions to share nozzles N.

The electrochemical system 100 described above may be a solid oxide fuel cell system or a solid oxide water electrolysis system.

The present invention has been described with reference to the drawings, but these are merely illustrative examples, and those skilled in the art will understand that various modifications and equivalent implementations can be made therefrom. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the attached patent claims.

100: electrochemical system 110: anode module
111: Steam inlet 112: Fuel electrode recuperator
113: fuel electrode heater 114: steam supply pipe
115: stack connection 116: hydrogen discharge pipe
117: hydrogen outlet 118: leg
120: air electrode module 121: outdoor air inlet
122: Air cathode recuperator 123: Air cathode heater
124: External air supply pipe 125: Air guide
126: exhaust passage 127: exhaust port
128: compression rod 130: stack
140: bus bar 150: side panel
160: Compression plate 200: Insulation material
STS1, STS2: Stack seat N1: Hydrogen supply nozzle
N2: Hydrogen discharge nozzle NT1, NT2: Nut
N: Nozzle SP: Spring
ACC: Air electrode current collector FCC: Fuel electrode current collector

Claims (15)

an inlet of a first fluid;
a recuperator in fluid communication with the inlet of the first fluid;
an electric heater in fluid communication with the recuperator;
a supply pipe for a first fluid in fluid communication with the electric heater;
a stack seating portion in fluid communication with the first fluid supply pipe;
a second fluid discharge means in fluid communication with the stack seating portion; and
It includes a second fluid discharge port in fluid communication with the second fluid discharge means via the recuperator,
The recuperator is configured to exchange heat between the first fluid and the second fluid,
The stack seating portion is plural, and in this case, the plurality of stack seating portions are divided into a first row of stack seating portions and a second row of stack seating portions arranged left and right symmetrically, and the supply pipe of the first fluid is connected to the first row of stack seating portions. A pair of seating parts is disposed in parallel between the stack seating parts of the second row, and the discharge means for the second fluid is disposed on the outside of the stack seating parts in the first row when observed with respect to the supply pipe of the first fluid. A pair of electrode modules arranged in parallel on the outside of the second row of stack seating parts. According to paragraph 1,
An electrode module in which the inlet of the first fluid and the outlet of the second fluid are fluidically separated from each other and arranged in close contact. delete Electrode module according to claim 1 or 2; and
Electrochemical system comprising a stack. steam inlet;
an anode recuperator in fluid communication with the steam inlet;
a fuel electrode heater in fluid communication with the fuel electrode recuperator;
A steam supply pipe in fluid communication with the anode heater;
a fuel electrode stack seating portion in fluid communication with the steam supply pipe;
A steam supply nozzle in fluid communication with the anode stack seating portion;
a hydrogen discharge nozzle in fluid communication with the anode stack seating portion;
a hydrogen discharge pipe in fluid communication with the anode stack seating portion; and
It includes a hydrogen outlet in fluid communication with the hydrogen discharge pipe via the anode recuperator,
The anode recuperator is an electrode module configured to heat exchange steam introduced through the steam inlet and hydrogen discharged from the hydrogen discharge pipe. According to clause 5,
The anode stack seating portion includes a steam supply passage and a hydrogen discharge passage that are fluidically separated from each other, the steam supply passage is configured to connect the steam supply pipe and the steam supply nozzle, and the hydrogen discharge passage is configured to connect the steam supply pipe and the steam supply nozzle. and a steam supply passage configured to connect the hydrogen discharge pipe to each other. According to clause 6,
The steam supply nozzle and the hydrogen discharge nozzle are each disposed on an upper surface of the anode stack seating portion. Outdoor air inlet;
an air cathode recuperator in fluid communication with the outside air inlet;
an air cathode heater in fluid communication with the air cathode recuperator;
an external air supply pipe in fluid communication with the air electrode heater;
an air electrode stack seating portion in fluid communication with the external air supply pipe;
an exhaust passage in fluid communication with the air electrode stack seating portion; and
An exhaust port in fluid communication with the exhaust passage via the air cathode recuperator,
The air cathode recuperator is configured to heat exchange between outdoor air introduced through the outdoor air inlet and exhaust gas discharged from the exhaust passage,
There are a plurality of air electrode stack seating units. In this case, the plurality of air electrode stack seating units are divided into a first row of air electrode stack seating units and a second row of air electrode stack seating units arranged left and right symmetrically, and the external air supply pipe is located in the first row. A pair of air electrode stack seating parts is disposed in parallel between the air electrode stack seating parts and the second row of air electrode stack seating parts, and the exhaust passage is located on the outside of the air electrode stack seating parts in the first row and the second row when observed from the outside air supply pipe. A pair of electrode modules arranged in parallel on the outside of the air electrode stack seating parts. According to clause 8,
The electrode module further includes a plurality of air guides configured to individually separate the plurality of air electrode stack seating portions along with the external air supply pipe. According to clause 9,
An electrode module further comprising a compression rod disposed between two air guides adjacent to each other. An anode module including the electrode module according to claim 5;
An air electrode module including the electrode module according to claim 8; and
Electrochemical system comprising a stack. According to clause 11,
The air electrode module is disposed on the fuel electrode module, and further includes a pair of side panels disposed on the fuel electrode module to cover one side and the other side of the air electrode module, respectively. According to clause 12,
The air electrode module further includes a compression rod disposed to penetrate both the air electrode module and the fuel electrode module. According to clause 13,
A first nut coupled to one end of the compression rod on the air electrode module side, a spring coupled to the other end of the compression rod on the fuel electrode module side, and a second nut coupled to the other end of the compression rod to compress the spring. An electrochemical system further comprising: According to clause 11,
The electrochemical system is an electrochemical system that is a solid oxide fuel cell system or a solid oxide water electrolysis system.

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