Pressurization testing device and method for high-temperature solid oxide galvanic pile

Abstract

The invention discloses a pressurization testing device and method for a high-temperature solid oxide galvanic pile. The device comprises a frame forming a hexahedron, a pressure control mechanism and an electric heating furnace, a hexahedron formed by the frame comprises an operation surface for loading and unloading the high-temperature solid oxide galvanic pile; a supporting surface used for mounting a pressure control mechanism corresponds to the operation surface; the supporting face is provided with a supporting frame used for being fixedly connected with a pressure control mechanism. The electric heating furnace is arranged on the bottom surface of the frame; the heating furnace base is provided with a sliding rail, and the two parts of the heating cabin cover are closed and separated by sliding on the sliding rail; three frames of the supporting frame are connected with the two ends of the pneumatic pressure pump to form a stable rectangular frame. And the pressure applying mechanism connected with the pneumatic pressure pump is used for applying pressure to the high-temperature solid oxide galvanic pile. The loading and unloading device has a larger operation surface and a better operation observation view field, so that the loading and unloading operation can be quickly and accurately carried out on the SOC stack in the pressurization testing device.

Description

Technical Field

[0001] This invention relates to the field of SOC (Solid Oxide Charge), and particularly to a pressure testing apparatus and method for high-temperature solid oxide fuel cells. Background Technology

[0002] Under the "dual carbon" goal, high-temperature solid oxide fuel cells and electrolyzers (SOCs) have attracted widespread attention due to their advantages such as reversible power generation and hydrogen production capabilities, high power conversion efficiency, and long lifespan. Among them, planar solid oxide fuel cell stacks, with their high power density, have become the preferred choice for high-power fuel cell stacks.

[0003] A planar solid oxide fuel cell (SOC) stack is composed of multiple modular, repeating units (single cell / sealing material / metal connectors). In existing production and testing technologies, the height of the SOC stack varies with temperature. Therefore, stack testing typically employs physical pressurization to improve the stack's sealing performance. However, physical pressurization often requires a pressure control system and pressure support components. The pressure control system adjusts the pressure during the stack's heating and cooling processes. Common electric heating furnaces use a horizontally split design; therefore, the pressure support components are usually arranged longitudinally through the furnace. The pressure support components typically consist of a column and a top plate. The column is located in the middle of the furnace and fixed to the base, while the top plate is connected to the column and extends longitudinally through the middle of the furnace to ensure the stability and accuracy of the pressurization device.

[0004] In existing technologies, when pressure testing devices are applied to high-power flat-plate SOC stacks that can weigh tens of kilograms or even more, the clearance between the top and front and rear parts of the stack and the pressure support components is very small. This makes the operation of loading and unloading the SOC stack using tooling, forklifts, or hoisting methods complicated and difficult. Not only is it difficult to align the gas inlet and outlet channels due to the height and space limitations between the SOC stack and the support base, but it is also easy to damage the sealing material, which in turn affects the airtightness of the pressure testing device.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to enable quick and accurate loading and unloading of SOC stacks in a pressure testing device.

[0007] The present invention provides a pressure testing device for high-temperature solid oxide fuel cells, comprising a frame forming a hexahedron, a pressure control mechanism, and an electric heating furnace;

[0008] The hexahedron formed by the frame includes an operating surface for loading and unloading high-temperature solid oxide fuel cell stacks; corresponding to the operating surface is a support surface for mounting the pressure control mechanism; the support surface is provided with a support frame for fixing the pressure control mechanism.

[0009] The electric heating furnace is located on the bottom surface of the frame; the electric heating furnace includes a heating furnace base and a heating chamber cover designed as two separate parts; the heating furnace base is provided with a slide rail parallel to the bottom edge of the operating surface, and the two parts of the heating chamber cover are closed and separated by sliding on the slide rail; the heating furnace base includes multiple gas inlet and outlet channels for connecting the high-temperature solid oxide fuel cell stack.

[0010] The support frame includes three side frames, which are connected to both ends of the pneumatic pressurizing pump of the pressure control mechanism to form a stable rectangular frame; the side frame of the support frame corresponding to the pneumatic pressurizing pump is used to be fixedly connected to the support surface; the pressure applying mechanism connected to the pneumatic pressurizing pump extends into the position above the heating furnace base where the high-temperature solid oxide fuel cell is mounted, and is used to apply pressure to the high-temperature solid oxide fuel cell.

[0011] In another aspect of the invention, a method for using the pressure testing apparatus for the above-mentioned high-temperature solid oxide fuel cell is also provided, comprising the steps of:

[0012] S11, the two parts of the drive heating chamber cover slide apart along the slide rail, exposing the space above the heating furnace base;

[0013] S12. After aligning the pores of the high-temperature solid oxide fuel cell with the gas inlet and outlet channels, place it on the base of the heating furnace.

[0014] S13. The two parts of the drive heating chamber cover slide and close together along the slide rail to form the heating cavity of the electric heating furnace;

[0015] S14. Pressurize the high-temperature solid oxide fuel cell by controlling the pneumatic pressurization pump.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The pressure testing device of this invention is particularly suitable for high-power flat-plate SOC stacks weighing tens to hundreds of kilograms or larger in size. Through this invention, the clearance between the top and front and rear parts of the stack and the pressure support components is large, which makes the operation process of loading and unloading the SOC stack simple when using tooling, forklifts or hoisting, the gas inlet and outlet channels can be easily and accurately aligned, and the sealing material is not easily damaged, thereby improving the airtightness of the pressure testing device.

[0018] Furthermore, during thermal cycling of the fuel cell stack, the stack expands and contracts with temperature changes. This is especially true for compression-type sealed fuel cell stacks, where thermal expansion and contraction are significant. While the seal is good at high temperatures, the physical sealing gasket does not expand at low temperatures, resulting in poor sealing. Therefore, the pressure applied to the fuel cell stack needs to be flexibly adjusted according to temperature changes. The pressure control mechanism in this invention can flexibly adjust the fuel cell stack pressure according to high and low temperatures. This ensures good sealing of the fuel cell stack at high, medium, and low temperatures, thereby avoiding the problem of poor sealing of traditional fuel cell stacks at medium and low temperatures, as well as the problem of catalyst oxidation due to poor sealing.

[0019] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, and to make the above and other objects, technical features and advantages of the present invention easier to understand, one or more preferred embodiments are listed below and described in detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the pressure testing device for high-temperature solid oxide fuel cells described in this invention;

[0021] Figure 2 This is a front view of the hexahedron corresponding to the frame in this invention;

[0022] Figure 3 This is a schematic diagram of the gas inlet and outlet channel described in this invention;

[0023] Figure 4 This is another structural schematic diagram of the gas inlet and outlet channel described in this invention;

[0024] Figure 5 This is a flowchart illustrating the steps of using the pressure testing device for high-temperature solid oxide fuel cells described in this invention. Detailed Implementation

[0025] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0026] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0027] In this document, for ease of description, spatial relative terms such as “below,” “under,” “down,” “above,” “above,” “upper,” etc., are used to describe the relationship of one element or feature to another element or feature in the accompanying drawings. It should be understood that spatial relative terms are intended to encompass different orientations of an object in use or operation, in addition to those depicted in the figures. For example, if an object in the figure is flipped, an element described as “below” or “under” another element or feature would be oriented “above” that element or feature. Thus, the exemplary term “below” can encompass both the downward and upward orientations. An object may also have other orientations (rotated 90 degrees or other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0028] In this document, the terms "first," "second," etc., are used to distinguish two different elements or parts, and are not used to define specific positions or relative relationships. In other words, in some embodiments, the terms "first," "second," etc., can also be used interchangeably.

[0029] Example 1

[0030] To enable quick and accurate loading and unloading of the SOC stack within the pressure testing apparatus, refer to... Figure 1 and Figure 2 In this embodiment of the invention, a pressure testing device for high-temperature solid oxide fuel cells is provided, comprising a frame constituting a hexahedron, a pressure control mechanism, and an electric heating furnace;

[0031] The hexahedron formed by the frame 01 includes an operating surface 11 for loading and unloading high-temperature solid oxide fuel cell stacks; corresponding to the operating surface 11 is a support surface for installing a pressure control mechanism; the support surface is provided with a support frame 03 for fixing and connecting the pressure control mechanism.

[0032] The electric heating furnace is located on the bottom surface of the frame 01; the electric heating furnace includes a heating furnace base 41 and a heating chamber cover 42 with a split design of two parts; the heating furnace base 41 is provided with a slide rail 43 parallel to the bottom edge of the operating surface 11, and the two parts of the heating chamber cover 42 are closed and separated by sliding on the slide rail 43; the heating furnace base 41 includes multiple gas inlet and outlet channels 44 for connecting the high-temperature solid oxide fuel cell stack.

[0033] In this embodiment of the invention, the support frame 03 includes three side frames, which are connected to both ends of the pneumatic pressurizing pump 21 of the pressure control mechanism to form a stable rectangular frame; the side frame 31 of the support frame 03 corresponding to the pneumatic pressurizing pump 21 is structurally fixedly connected to the support surface; the pressure applying mechanism connected to the pneumatic pressurizing pump 02 extends into the position above the heating furnace base 41 where the high-temperature solid oxide fuel cell is mounted, and is used to apply pressure to the high-temperature solid oxide fuel cell.

[0034] The frame 01 in the embodiments of the present invention can form a hexahedron structure, and Figure 1 in the front view of the hexahedron corresponding to the frame 01 (as shown in Figure 2 ), the area of the front side is the largest and can be used as the operation surface 11 for loading and unloading the high-temperature solid oxide stack; the rear side of the hexahedron is the support surface, that is, the surface corresponding to the operation surface 11, and is used to install the pressure control mechanism; in practical applications, the three side frames of the support frame 03 in the embodiments of the present invention are preferably made of steel and integrally formed.

[0035] The pressure control mechanism in the embodiments of the present invention is used to apply pressure to the loaded high-temperature solid oxide stack; in practical applications, the pressure control mechanism may include a pneumatic pressure pump 21, a connecting rod, a connecting flange, a pressure sensor, a metal pressure rod 22, and a high-temperature ceramic rod 23.

[0036] In order to enable the pressure control mechanism to stably apply pressure to the high-temperature solid oxide stack below it, in the embodiments of the present invention, a support frame 03 including three side frames is provided. The three side frames are in a "C" shape. Then, the pneumatic pressure pump 21 in the pressure control mechanism serves as the fourth side frame and is fixedly connected to the three side frames to form a stable quadrilateral structure; in practical applications, the upper and lower side frames connected to the pneumatic pressure pump 21 may both be provided with coaxial through holes to fix the pneumatic pressure pump 21 and allow the connecting rod 22 to pass through downward.

[0037] In order to ensure the stability and balance of applying pressure to the high-temperature solid oxide stack, in the embodiments of the present invention, requirements are also imposed on the coaxiality of the components in the pressure control mechanism. For example, the coaxiality of the pneumatic pressure pump 21, the metal pressure rod 22, and the high-temperature ceramic rod 23 in the embodiments of the present invention is greater than the preset threshold. It should be noted that the preset threshold for coaxiality can be set by those skilled in the art according to needs and work experience and is not specifically limited here. Further, in the embodiments of the present invention, in order to achieve effective cooling, a cooling water pipe in contact connection with the pressure sensor may also be provided.

[0038] Preferably, the high-temperature ceramic rod 23 in the embodiments of the present invention can also be set in various specifications with different diameters and lengths, and its size is between 30-60 mm. In this way, by setting the high-temperature ceramic rod 23 and the metal pressure rod 22 to be detachably connected by threads, the length of the pressure control mechanism can be adjusted.

[0039] The electric heating furnace in this embodiment of the invention is a split design. The heating chamber cover 42 is divided into two parts, which are mounted on the slide rail 43. When the two parts of the heating chamber cover 42 are together by sliding, they will close with the heating furnace base 41 to form the heating cavity of the electric heating furnace. The high-temperature solid oxide fuel cell stack inside is heated by the thermocouples provided on the inner wall of the heating chamber cover 42. When the two parts of the heating chamber cover 42 are slid apart, an open space is created above the heating furnace base 41. In this way, the high-temperature solid oxide fuel cell stack can be easily loaded and unloaded through the operating surface 11 in the frame 01. Since the operating surface 11 has a large area and is located in front of the frame 01 in this embodiment of the invention, the loading and unloading actions of the operator are simplified. On the other hand, after the heating chamber cover 42 is slid open to both sides in this embodiment of the invention, the space for placing the high-temperature solid oxide fuel cell stack is large, which facilitates the observation of the operator.

[0040] In this embodiment of the invention, the furnace base 41 is also provided with a plurality of gas inlet and outlet channels 44 for connecting to the high-temperature solid oxide fuel cell stack; typically, there are four gas inlet and outlet channels 44; furthermore, in order to improve the sealing performance of the gas connected to the high-temperature solid oxide fuel cell stack, in this embodiment of the invention, a sealing gasket can also be provided around the gas inlet and outlet channels 44, so that after the high-temperature solid oxide fuel cell stack is placed, the sealing gasket can prevent gas from leaking from the gap between the high-temperature solid oxide fuel cell stack and the furnace base 41.

[0041] Preferably, in order to reduce the difficulty of placing the high-temperature solid oxide fuel cell and improve the correspondence between the gas inlet and gas outlet channels 44 of the high-temperature solid oxide fuel cell, in this embodiment of the invention, the gas outlet channel 44 can also be configured to include a frustum-shaped positioning guide part 441. In this way, since the upper end of the protruding frustum-shaped positioning guide part is smaller than the diameter of the gas outlet channel, it is easier to align. After alignment, when the high-temperature solid oxide fuel cell slowly descends, the frustum-shaped design can also play a role in correcting deviations, thereby effectively avoiding alignment deviations of the gas outlet channel 44.

[0042] Furthermore, such as Figure 3As shown, in this embodiment of the invention, the structure of the gas inlet / outlet channel 44 can be such that the lower end of the positioning guide 441 can be fitted with a sealing sleeve 442 of a preset width. After the upper end of the positioning guide 441 is precisely aligned with the gas inlet of the high-temperature solid oxide fuel cell, the sealing sleeve 442 fitted at the lower end effectively seals the gap between the high-temperature solid oxide fuel cell and the furnace base. Since the sealing sleeve 442 in this embodiment also has a certain width, during the slow descent of the high-temperature solid oxide fuel cell, each position of the sealing sleeve 442 will be subjected to pressure from the high-temperature solid oxide fuel cell. Thus, even when the high-temperature solid oxide fuel cell is initially at a low temperature, the sealing sleeve 442 will maintain good airtightness under pressure, thereby effectively improving the airtightness performance throughout the entire testing process.

[0043] Preferred, such as Figure 4 As shown, in this embodiment of the invention, the structure of the gas inlet / outlet channel 44 can be such that the lower end of the positioning guide 441 can also be configured as a column, that is, the upper end of the positioning guide 441 is a truncated cone, the lower end of the positioning guide 441 is a column, and the sealing sleeve 442 is fitted onto the column. In this way, after the truncated cone at the upper end completes precise positioning, during the continued descent, the high-temperature solid oxide fuel cell will squeeze the columnar sealing sleeve 442 fitted onto the lower end of the positioning guide. Since the high-temperature solid oxide fuel cell will not shake at this time, the force on the sealing sleeve is more uniform, which can not only further improve the airtightness, but also effectively reduce the wear of the sealing sleeve, thereby extending the service life of the sealing sleeve.

[0044] In this embodiment of the invention, a through hole coaxial with the components in the pressure control mechanism is provided on the top of the heating chamber cover; in this way, the high-temperature ceramic rod can be inserted into the electric heating furnace through the hole to abut against the pad on the fuel cell / electrolyte stack.

[0045] In summary, the pressure testing device in this embodiment of the invention is particularly suitable for high-power flat-plate SOC stacks weighing tens to hundreds of kilograms or larger in size. Through this invention, the clearance between the top and front and rear parts of the stack and the pressure support components is large, which makes the operation process of loading and unloading the SOC stack using tooling, forklifts or hoisting methods simple, the gas inlet and outlet channels are easy to align accurately, and the sealing material is not easily damaged, thereby improving the airtightness of the pressure testing device.

[0046] Furthermore, during thermal cycling of the fuel cell stack, the stack expands and contracts with temperature changes. This is especially true for compression-type sealed fuel cell stacks, where thermal expansion and contraction are significant. While the seal is good at high temperatures, the physical sealing gasket does not expand at low temperatures, resulting in poor sealing. Therefore, the pressure applied to the fuel cell stack needs to be flexibly adjusted according to temperature changes. In this embodiment of the invention, the pressure control mechanism can flexibly adjust the fuel cell stack pressure according to high and low temperatures. This ensures that the fuel cell stack is well sealed at high, medium, and low temperatures, thereby avoiding the problem of poor sealing in traditional fuel cell stacks at medium and low temperatures, as well as the problem of catalyst oxidation due to poor sealing.

[0047] Example 2

[0048] In another aspect of the embodiments of the present invention, such as Figure 5 As shown, a pressure testing method for high-temperature solid oxide fuel cells is also provided, including the following steps:

[0049] S11. The two parts of the drive heating chamber cover slide apart along the slide rail, exposing the space above the heating furnace base;

[0050] S12. After aligning the pores of the high-temperature solid oxide fuel cell with the gas inlet and outlet channels, place it on the base of the heating furnace.

[0051] S13. The two parts of the drive heating chamber cover slide and close together along the slide rail to form the heating cavity of the electric heating furnace;

[0052] S14. By controlling the pneumatic pressurization pump, the pressurization mechanism applies pressure to the high-temperature solid oxide fuel cell.

[0053] Because the working principle and beneficial effects of the pressure testing device for high-temperature solid oxide fuel cells in the embodiments of the present invention have already been demonstrated... Figure 1 The corresponding pressure testing apparatus for high-temperature solid oxide fuel cells is also described and explained, so they can be referenced together, and will not be repeated here.

[0054] The above-described product can execute the methods provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the methods. Technical details not described in detail in this embodiment can be found in the methods provided in other embodiments of the present invention.

[0055] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0056] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0057] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0058] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0059] It should be understood that in the embodiments of this application, the claims, various embodiments, and features can be combined with each other to solve the aforementioned technical problems.

[0060] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pressure testing device for high-temperature solid oxide fuel cells, characterized in that, It includes a frame that forms a hexahedron, as well as a pressure control mechanism and an electric heating furnace; The hexahedron formed by the frame includes an operating surface for loading and unloading high-temperature solid oxide fuel cell stacks; corresponding to the operating surface is a support surface for mounting the pressure control mechanism; the support surface is provided with a support frame for fixing the pressure control mechanism. The electric heating furnace is located on the bottom surface of the frame; the electric heating furnace includes a heating furnace base and a heating chamber cover designed as two separate parts; the heating furnace base is provided with a slide rail parallel to the bottom edge of the operating surface, and the two parts of the heating chamber cover are closed and separated by sliding on the slide rail; the heating furnace base includes multiple gas inlet and outlet channels for connecting the high-temperature solid oxide fuel cell stack. The support frame includes three side frames, which are connected to both ends of the pneumatic pressurizing pump of the pressure control mechanism to form a stable rectangular frame; the side frame of the support frame corresponding to the pneumatic pressurizing pump is used to be fixedly connected to the support surface; the pressure applying mechanism connected to the pneumatic pressurizing pump extends into the position above the heating furnace base where the high-temperature solid oxide fuel cell is mounted, and is used to apply pressure to the high-temperature solid oxide fuel cell.

2. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, The number of gas inlet and outlet channels includes four.

3. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, Also includes: Each of the gas inlet and outlet channels is also provided with a sealing gasket.

4. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, The gas inlet / outlet channel includes a frustoconical positioning guide.

5. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, The lower end of the positioning guide is fitted with a sealing sleeve of a preset width.

6. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, The three frames of the support frame are made of steel and are integrally formed.

7. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, Thermocouples are installed in the inner walls of both parts of the heating chamber cover.

8. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, The pressure-applying mechanism connected to the pneumatic pressurizing pump includes a connecting rod, a connecting flange, a pressure sensor, a metal pressure rod, and a high-temperature ceramic rod.

9. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 8, characterized in that, The coaxiality of the pneumatic pressurizing pump, the metal pressurizing rod, and the high-temperature ceramic rod is greater than a preset threshold.

10. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, The high-temperature ceramic rod is available in various specifications, and the high-temperature ceramic rod is connected to the metal pressure rod by a detachable threaded connection.

11. The pressure testing apparatus for high-temperature solid oxide fuel cells according to claim 1, characterized in that, Also includes: A cooling water pipe that is in contact with the pressure sensor.

12. A method of using a pressure testing apparatus for high-temperature solid oxide fuel cells, for use with a pressure testing apparatus for high-temperature solid oxide fuel cells as described in any of claims 1 to 11; characterized in that, Including the following steps: S11, the two parts of the drive heating chamber cover slide apart along the slide rail, exposing the space above the heating furnace base; S12. After aligning the pores of the high-temperature solid oxide fuel cell with the gas inlet and outlet channels, place it on the base of the heating furnace. S13. The two parts of the drive heating chamber cover slide and close together along the slide rail to form the heating cavity of the electric heating furnace; S14. Pressurize the high-temperature solid oxide fuel cell by controlling the pneumatic pressurization pump.

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