Fuel cell tower for a fuel cell system

Abstract

The present invention relates to a fuel cell tower (10) for a fuel cell system having a housing (20) with a housing space (22) in which at least two fuel cell stacks (30) are arranged overlapping in a stacking direction (SR), wherein at least one counterweight (40) is arranged above the fuel cell stack (30) in the housing space (22), the counterweight (40) contacting the uppermost fuel cell stack (30) in a manner that transfers counterweight gravity (GK) for applying at least a portion of the counterweight gravity (GK) of the counterweight (40) to the fuel cell stack (30).

Description

Technical Field

[0001] The present invention relates to a fuel cell tower for a fuel cell system, an installation method for mounting the fuel cell tower, and a transport and fixing method for transporting and fixing the fuel cell tower. Background Technology

[0002] As is well known, fuel cell towers are used to provide electricity, and these towers typically have a stacked arrangement of multiple fuel cell stacks. The total power generated by the combined fuel cell stacks is greater than the power generated by a single fuel cell stack. By combining multiple fuel cell towers, high demands for the amount of electricity to be generated can be met in a modular fashion.

[0003] A common challenge in the construction and supply of fuel cell towers is ensuring adequate compression of the individual fuel cells within the stack. Typically, individual fuel cell stacks are clamped together using bolts or spring force, resulting in mutually constrained compression of the individual fuel cells. However, providing this dedicated compression device for the fuel cell stacks is relatively complex and requires additional installation space within the fuel cell tower. In particular, additional installation steps are necessary because each fuel cell stack must be clamped and compressed individually. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome, at least in part, the aforementioned disadvantages. In particular, the object of the present invention is to provide the possibility of compressing fuel cell stacks within fuel cell towers in a cost-effective and simple manner.

[0005] The technical problem to be solved by the present invention is achieved through a fuel cell tower having the features of claim 1, an installation method for a fuel cell having the features of claim 13, and a transport and fixing method having the features of claim 14. Other features and details of the invention will be apparent from the dependent claims, the specification, and the drawings. Herein, the features and details relating to the fuel cell tower according to the invention also naturally apply to the installation method and transport and fixing method according to the invention, and vice versa; therefore, all aspects of the invention are always referred to in relation to each other.

[0006] According to the present invention, a fuel cell tower for a fuel cell system is provided. For this purpose, the fuel cell tower has a housing with a shell space in which at least two fuel cell stacks are arranged overlapping in a stacking direction. According to the present invention, the fuel cell tower is characterized in that at least one counterweight is arranged above the fuel cell stacks within the housing cavity. This counterweight is arranged to contact the uppermost fuel cell stack in a gravity-transfer manner, so as to apply at least a portion of the weight of the counterweight to the fuel cell stacks.

[0007] According to the present invention, a fuel cell system consisting of one or more fuel cell towers is used to generate electrical energy. However, a reverse operating mode can also be conceived in principle, for example, using an electrolysis device with a counterweight according to the present invention.

[0008] The core concept of this invention is to now arrange two or more fuel cell stacks overlapping each other in a housing space along a stacking direction. This specific arrangement within the fuel cell tower constructed according to the invention can now be used for compression. For this purpose, at least one counterweight is provided, which can provide a defined gravity, for example, through a correspondingly high material density and the choice of its associated material. If this counterweight is now placed where its gravity is at least partially transferred to the uppermost fuel cell stack, this gravity transfer will compress the uppermost fuel cell stack accordingly. Due to the tower-like construction of the fuel cell tower and the stacked arrangement of the fuel cell stacks, this gravity is now transferred not only to the uppermost fuel cell stack but also to the fuel cell stacks below it. In other words, the counterweight not only compresses the uppermost fuel cell stack but also all the stacked fuel cell stacks below. Now, a single counterweight can compress all the fuel cell stacks within the housing space. Furthermore, the compressive force increases along the housing space direction. The uppermost fuel cell stack is compressed minimally, while the fuel cell stacks below are compressed by the gravity of the counterweight and the gravity of the fuel cell stacks above them, respectively.

[0009] In known methods, each individual fuel cell stack requires additional installation steps for clamping and compressing. However, in the construction according to the invention, the fuel cell stack can be inserted into the housing space uncompressed. This eliminates the need for preparatory clamping steps, significantly reducing the complexity of the installation process, which will still be explained later.

[0010] Furthermore, by placing the counterweight as a final step on the topmost fuel cell stack, the required installation space within the casing can be reduced. While the counterweight above the topmost fuel cell stack now requires some free space, the installation space required for the compression possibilities of clamping devices for all individual fuel cell stacks is completely eliminated. In particular, this allows the fuel cell tower to be designed taller, i.e., exceeding the counterweight volume, but also more slender, i.e., decreasing in height to correspond to the clamping devices. This installation space advantage is further amplified when two or more of these fuel cell towers are placed side-by-side within the fuel cell system.

[0011] According to the present invention, a defined compression function can now be provided by counterweights. As will be explained later, this compression function is based on the minimum and maximum compression required by each fuel cell stack. Of course, multiple counterweights can also be used, and said counterweights can also be additionally arranged between the individual fuel cell stacks. However, in a preferred configuration, at least one counterweight is arranged uniquely or almost uniquely on the uppermost fuel cell stack to introduce gravity into it.

[0012] It should be noted that it is sufficient to introduce at least a portion of the weight of the counterweight into the fuel cell stack. Preferably, the weight is applied entirely or almost entirely to the uppermost fuel cell stack. The proportion of weight actually available for compressing the fuel cell stack depends on the actual geometric orientation of the counterweight and the contact of the uppermost fuel cell stack with respect to the direction of gravity. Preferably, within the scope of the invention, the fuel cell tower is erected such that the stacking direction is oriented along the direction of gravity. If the counterweight is now placed on the uppermost fuel cell stack such that the direction of the counterweight force is also along the direction of gravity, and therefore oriented along the stacking direction, it can be ensured that all or almost all of the weight is also actually used for compression. Furthermore, by optimizing the geometric relationship between at least one counterweight and the fuel cell stack, the application method can be optimized, and in particular the magnitude of any potential tilting moment can be optimized.

[0013] Advantageously, in the fuel cell tower according to the invention, an insulating layer is arranged between at least one counterweight and the uppermost fuel cell stack for electrical insulation between the counterweight and the uppermost fuel cell stack. Electrically, this insulation effectively decouples the electrical function of the counterweight from that of the fuel cell stack. In particular, a ceramic insulating layer can be used as the electrical insulation layer. A significant advantage of using a ceramic insulating layer is the ability to achieve improved heating time for the fuel cell tower. Since fuel cell systems often operate at temperatures up to 1000 degrees Celsius, the heating process is a very energy-intensive part of their operational functionality. By reducing the thermal resistance between the counterweight and the fuel cell stack, for example, by using a relatively thin ceramic insulating layer, the heating time can be improved. In particular, this reduces the thermal inertia of the entire system consisting of the fuel cell stack and the counterweight.

[0014] Furthermore, it is advantageous that, in the fuel cell tower according to the invention, the centers of gravity of at least two fuel cell stacks are located on a line of center of gravity, which specifically extends along a straight line or substantially a straight line. Each fuel cell stack has a defined center of gravity due to its specific combination of different fuel cells. Connecting the centers of gravity of all fuel cell stacks within the fuel cell tower yields a line of center of gravity, which correspondingly depicts the orientation of all the centers of gravity of the fuel cell stacks. This line of center of gravity may be curved, but is preferably straight or substantially straight. In a tower arrangement with a vertical structure, the line of center of gravity is preferably oriented in the direction of gravity, and thus perpendicular or substantially perpendicular to the vertical surface of the fuel cell tower in operation.

[0015] Advantageously, in the fuel cell tower according to the invention, the stack center of gravity line is formed along or substantially along the stacking direction and / or substantially along the gravity direction. A preferred embodiment of the fuel cell tower includes the association of the stack center of gravity line along the stacking direction and the gravity direction. This combines two key advantages. By orienting along the stacking direction, the compactness of the fuel cell tower is improved and the required installation space is minimized. Furthermore, by also aligning along the gravity direction, the maximum proportion of the counterweight's gravity force, particularly the entire gravity, can be applied along the gravity direction, thereby also along the stack center of gravity line. If, as will be described later, the counterweight's center of gravity is also located on this line, the tilting moment can be further reduced, eliminating the need for separate support or bracing of lateral forces, shear forces, or tilting moments. Therefore, the effect of gravity is limited to or substantially limited to generating a compressive function, and no additional mechanical support is required.

[0016] Advantageously, in the fuel cell tower according to the invention, the center of gravity of at least one counterweight is located or substantially arranged on the extension of the stack center of gravity line. This allows gravity to be introduced directly from above, i.e., from the center of gravity of the counterweight, into the stack center of gravity line. Through this force-related orientation, not only is all gravity introduced into the fuel cell stack in this way, but the introduction also occurs along the stack center of gravity line, making it possible to completely or substantially completely avoid tilting moments about a single stack center of gravity. Therefore, maximizing the introduced gravity is associated with maximizing the mechanical stability of the fuel cell tower. In particular, this enhanced stability results in the elimination of the need for additional components for mechanical stabilization, such as lateral load transfer plates or similar elements.

[0017] A further advantage is that at least one counterweight in the fuel cell tower according to the invention is made of a high-temperature resistant material. As previously mentioned, the operating temperature of fuel cell towers often reaches approximately 1000 degrees Celsius. At such high temperatures, especially considering downtime and standby temperatures within an ambient temperature range of, for example, 20 degrees Celsius, the high-temperature resistant material used for the counterweight can improve long-term stability. In particular, this avoids embrittlement and / or fouling of the counterweight material, and allows the counterweight to be seamlessly integrated into the high-temperature space of the fuel cell tower's housing. It should also be noted that it is irrelevant whether the at least one counterweight consists of an integral structure, a separate counterweight component, or a counterweight layer.

[0018] It is also advantageous to form a compensating gap between at least one counterweight and the housing in the fuel cell tower according to the invention, particularly above at least one counterweight relative to the stacking direction, to compensate for dimensional differences in the fuel cell stack caused by temperature. As has been stated several times, the temperature within the housing space fluctuates between a shutdown temperature of about 20 degrees Celsius and an operating temperature of up to 1000 degrees Celsius. All components within this housing space affected by this temperature fluctuation expand due to thermal stress at high operating temperatures and shrink again after reaching the shutdown temperature. To compensate for these temperature-related expansions, a compensating gap is designed in this embodiment, which can be arranged above and / or below the fuel cell stack and / or counterweight. This compensating gap can be designed as a free compensating gap or a compensating gap containing an elastic compressible material. In this way, it can be ensured that the defined positioning of the counterweight does not result in undesirable, thermally induced increased mechanical stress due to dimensional changes at operating temperatures.

[0019] Furthermore, it is advantageous to arrange at least one positioning device in the fuel cell tower according to the invention between the casing and at least one counterweight and / or between the uppermost fuel cell stack and at least one counterweight for fixing the position of the counterweight. The introduction of the counterweight force provides basic stability and positioning for the counterweight. The stability of the counterweight position can be further ensured by using a positioning device that positions the counterweight, particularly in a form-fit manner or substantially in a form-fit manner. Of course, this positioning device can also have clearance on the sidewalls of the casing, the upper side of the casing, and / or the upper side of the fuel cell stack to ensure the possibility of expansion at the aforementioned operating temperature of approximately 1000 degrees Celsius. For this clearance, the positioning device can be designed not only as a positioning pin but also as a positioning rib and / or a positioning cross.

[0020] Furthermore, it is advantageous that at least one counterweight in the fuel cell tower according to the invention is surrounded by a sealing element for an hermetically tight seal between the inlet and outlet sides of the fuel cell stack. In this configuration, the fuel cell tower can be specifically designed with a so-called open cathode for the fuel cell stack, i.e., with cathode flow to and from the cathode portions of all fuel cell stacks. This sealing element is provided to avoid unwanted gas bypass at the cathode of the fuel cell stack. For example, a single layer or multiple layers of ceramic paper can be provided as such a sealing element. Furthermore, electrical contact with the housing can also be avoided in this manner. Preferably, the sealing element is designed not only to seal the counterweight but also to surround all fuel cell stacks, providing a desired seal for the open cathodes of all fuel cells within the housing space as a universal and therefore uniform sealing element.

[0021] It is also advantageous that, in the fuel cell tower according to the invention, at least one counterweight has at least one transport surface in contact with at least one transport fixing element for force transmission and / or shape transmission, for the safe transport of the installed fuel cell tower. Within the scope of the invention, force transmission and shape transmission should be understood as the counterweight being connectable to the transport fixing element by force-fit or shape-fit. As previously mentioned, it is sufficient to place the counterweight in a defined position on the uppermost fuel cell stack. In static operation, this is not a problem, even in most uses. However, during transport, i.e., when moving the fully installed fuel cell tower to its operating position, this can cause problems because external movement of the fuel cell tower may cause the counterweight to shift undesirably from its desired and predetermined position. In other words, this can lead to undesirable misalignment of the counterweight due to transport. If a transport surface is provided, for example, for integrating the transport fixing element, reliable positioning of the counterweight can be ensured even during transport. This transport fixing may, for example, include a transport fixing element that cooperates with the transport surface in at least a partial topographical engagement and / or force-fit, or at least a partial force-fit. For example, this transport fixing element can be screwed in from the outside and thus form a defined force fit and / or form fit with the counterweight for transport.

[0022] Furthermore, it is advantageous that the gravity of the counterweight in the fuel cell tower according to the invention is adapted to the minimum load of the uppermost fuel cell stack and the maximum load of the lowermost fuel cell stack. All fuel cell stacks require a minimum load of counterweight for the desired compression function. However, the maximum load should also be considered to prevent mechanical damage to individual fuel cells in the fuel cell stack due to excessive counterweight in a highly safe manner. With these two boundary conditions, the minimum load and the maximum load of all fuel cell stacks can thus be defined. Since the weight of the counterweight for the lowermost fuel cell stack is added to the weight of all fuel cell stacks arranged above it due to the mutual stacking arrangement of all fuel cell stacks along the stacking direction, the lowermost fuel cell stack is correspondingly subjected to the maximum load of all fuel cell stacks within the fuel cell tower. In this way, when designing the gravity of the counterweight, both the minimum and maximum loads are now considered to ensure that all fuel cell stacks guarantee sufficient compression function while simultaneously preventing mechanical damage to all fuel cell stacks.

[0023] Furthermore, it is advantageous that in the fuel cell tower according to the invention, the fuel cell stacks are interconnected in a force-transmitting manner, particularly along or approximately along the stacking direction. This force-transmitting connection specifically refers to a pressure-transmitting connection, such as a force-transmitting stack where all fuel cell stacks are directly stacked. Here, electrically insulating materials, sealing materials, or similar materials can be arranged between the fuel cell stacks to ensure the indirect transmission of gravity.

[0024] This invention also relates to an installation method for mounting a fuel cell tower according to the invention. This installation method is characterized by the following steps: - At least two fuel cell stacks are stacked along the stacking direction within the casing space of the housing. - Place at least one counterweight within the casing space in contact with the uppermost fuel cell stack in a manner that transfers gravity. - Enclosed casing.

[0025] By forming the fuel cell tower according to the invention, the installation method according to the invention has the same advantages as those explained in detail in conjunction with the fuel cell tower according to the invention. It is evident here that the compression function is introduced in a single step with at least one counterweight arranged, thus simultaneously occurring for all fuel cell stacks. It is evident here that this construction of the fuel cell tower according to the invention significantly simplifies the installation method and reduces its complexity.

[0026] An additional aspect of this invention is to provide a method for transporting and securing a fuel cell tower according to the invention. This method is characterized by the following steps: -At least one transport fixing element is arranged within the housing space at a fixed position between the housing and at least one counterweight. - Secure at least one transport fixing element in a fixed position.

[0027] By securing the fuel cell tower according to the invention during transport, the method of securing it according to the invention also possesses the same advantages as those explained in detail in conjunction with the fuel cell tower according to the invention. As previously stated, securing it during transport is advantageous because the transport forces that would otherwise cause undesirable displacement of the counterweight. For example, by fixing the transport securing element relative to the transport surface, the counterweight screw can be tightened into place, and thus the counterweight is secured in the desired position for transport. Upon reaching the upright position of the fuel cell tower, the transport securing element is correspondingly removed, and it is still ensured that the counterweight does not leave the desired position for generating compression function even during transport. Attached Figure Description

[0028] Other advantages, features, and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention will be described in detail with reference to the accompanying drawings. The figures are as follows: Figure 1 An embodiment of a fuel cell tower according to the present invention is shown. Figure 2 Detailed illustrations of another embodiment of a fuel cell tower according to the present invention are shown. Figure 3 Detailed illustrations of another embodiment of a fuel cell tower according to the present invention are shown, and Figure 4 Detailed illustrations of another embodiment of a fuel cell tower according to the present invention are shown. Detailed Implementation

[0029] Figure 1 A fuel cell tower 10 of a fuel cell system is schematically shown. For example, this fuel cell tower 10 is designed with four overlapping fuel cell stacks 30. All four fuel cell stacks 30 are arranged overlapping each other in the housing space 22 of the housing 20 along the stacking direction SR through openings in the housing 20 (not shown in detail here). This arrangement follows several constraints. First, in this embodiment, each fuel cell stack 30 has a defined and construction-dependent center of gravity SP. When stacking all the fuel cell stacks 30 overlapping each other along the stacking direction SR, it is now important to ensure that the centers of gravity SP of all stacks not only lie on a common straight line, but that this center of gravity line SPL is also oriented along the stacking direction SR.

[0030] In addition, from Figure 1 As can be seen, the center of gravity line SPL is oriented not only along the stacking direction SR, but also along the gravity direction SKR, which is oriented parallel to it. This now provides several advantages for the counterweight 40.

[0031] Figure 1The counterweight 40 is now positioned above the uppermost fuel cell stack 30 within the housing space 22 of the housing 20. This counterweight is formed of a high-temperature resistant material and is thus able to withstand temperatures up to 1000 degrees Celsius. The counterweight 40 also has a center of gravity GP, from which the counterweight gravity GK is correspondingly emanated. Due to the alignment of the gravity direction SKR, the counterweight gravity GK of the counterweight 40 is now also along this gravity direction SKR. Figure 1 The specific implementation now shows that by aligning the stack center of gravity line SPL along the stacking direction SR and simultaneously along the gravity direction SKR, the counterweight gravity GK is introduced along the gravity direction, and therefore along the stack center of gravity line SPL. This results in the avoidance of a lever arm formed between the introduced counterweight gravity GK and the individual stack centers of gravity SP, and thus avoids the introduction of a tilting moment. Furthermore, the direct and complete inclusion of the counterweight gravity GK also ensures the maximum compressibility of the counterweight 40 for the fuel cell stack 30.

[0032] Figure 2 A partial cross-section of the fuel cell tower 10 shown in the above figure, including the counterweight 40, is schematically illustrated. Here, it can be seen that an insulating layer 50 is now additionally arranged between the counterweight 40 and the uppermost fuel cell stack 30. This insulating layer 50 serves to electrically insulate the counterweight 40 relative to the uppermost fuel cell stack 30. Furthermore, Figure 2 The fuel cell stack 30 is designed as an open cathode, allowing cathode gas to flow into the fuel cell stack 30 in an open manner through the inlet side 32. After the chemical conversion within the fuel cell stack 30 is completed, the cathode gas exits the fuel cell stack 30 through the also open outlet side 34 within the housing space 22. To prevent gas bypassing the fuel cell stack 30, a sealing element 70 is provided above the counterweight 40 in cross-section. This sealing element 70 is specifically arranged not only around the counterweight 40, but also around all fuel cell stacks 30.

[0033] Figure 2 The embodiment shows a compensation gap 24 as an additional feature. When heated to an operating temperature of, for example, about 1000 degrees Celsius, the fuel cell stack 30 expands further, specifically along the stacking direction SR. Figure 2 In this implementation, this results in an increased upward extension of the component, and the compensation gap 24 is thus reduced. To ensure this, the sealing element 70 illustrated here is preferably designed as an elastically compressible sealing element.

[0034] Figure 3Another embodiment with additional structural elements is shown. A pin-shaped positioning device 60 is thus provided here, which ensures that the counterweight 40 does not leave its illustrated position even during transport and / or expansion movement of the fuel cell stack 30. A compensation gap 24, not marked in detail, above the counterweight 40 is also illustrated here, providing the desired compensation function.

[0035] at last, Figure 4 Another possibility for transport and fixing is shown. Therefore, a recess is provided on the upper side of the counterweight 40 as a transport surface 42. According to... Figure 4 The current positioning indicates that the transport fixing element 80 is used here to transport the fuel cell stack 10. This transport fixing element 80 is screwed in from the outside of the housing 20, and in this way prevents the counterweight 40 from slipping undesirably due to transport movement. Once the operating position is reached, the transport fixing element 80 can be unscrewed and removed, restoring the desired functional safety and compression function of the counterweight 40.

[0036] The above description of the embodiments is merely an example to illustrate the present invention.

[0037] List of reference numerals 10. Fuel Cell Tower 20. Housing 22 Shell space 24 Compensation gap 30 Fuel Cell Stacks 32 Entrance side 34 Export side 40 counterweights 42. Transportation surface 50 Insulation Layer 60 Positioning device 70 Sealing elements 80 Transport Fixing Components SR stacking direction SKR Gravity Direction GK counterweight gravity SP stack center of gravity SKL stack center of gravity line GP counterweight center of gravity SPO fixed position

Claims

1. A fuel cell tower (10) for a fuel cell system, the fuel cell tower having a shell (20) with a shell space (22) in which at least two fuel cell stacks (30) are arranged overlapping in a stacking direction (SR), characterized in that, At least one counterweight (40) is arranged above the fuel cell stack (30) within the housing space (22), the counterweight (40) contacting the uppermost fuel cell stack (30) in a manner that transmits counterweight gravity (GK) to apply at least a portion of the counterweight gravity (GK) of the counterweight (40) to the fuel cell stack (30).

2. The fuel cell tower (10) according to claim 1, characterized in that, An insulating layer (50) is arranged between at least one of the weights (40) and the uppermost fuel cell stack (30) to electrically insulate the weights (40) relative to the uppermost fuel cell stack (30).

3. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, The center of gravity (SP) of at least two fuel cell stacks (30) lies on the center of gravity line (SPL), which is specifically oriented along a straight line or substantially along a straight line.

4. The fuel cell tower (10) according to claim 3, characterized in that, The stack center of gravity line (SPL) is oriented along or substantially along the stacking direction (SR) and / or along or substantially along the gravity direction (SKR).

5. The fuel cell tower (10) according to claim 3 or 4, characterized in that, At least one counterweight (40) has a center of gravity (CG), which is arranged or substantially arranged on the extension of the stack center of gravity line (SPL).

6. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, The at least one counterweight (40) is formed of a high-temperature resistant material.

7. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, A compensation gap (24) is formed between at least one of the weights (40) and the housing (20), particularly above at least one of the weights (40) relative to the stacking direction (SR), to compensate for dimensional differences in the fuel cell stack (30) caused by temperature.

8. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, At least one positioning device (60) is arranged between the housing (20) and at least one counterweight (40) and / or between the uppermost fuel cell stack (30) and at least one counterweight (40) for fixing the position of the counterweight (40).

9. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, At least one counterweight (40) is surrounded by a sealing element (70) for an airtight seal between the inlet side (32) and the outlet side (34) of the fuel cell stack (30).

10. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, At least one counterweight (40) has at least one transport surface (42) for force transmission and / or shape transmission contact with at least one transport fixing element (80) to safely transport the installed fuel cell tower (10).

11. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, The counterweight (40) has a counterweight gravity (GK) that is adapted to the minimum load of the uppermost fuel cell stack (30) and the maximum load of the lowermost fuel cell stack (30).

12. The fuel cell tower (10) according to any one of the preceding claims, characterized in that, The fuel cell stacks (30) are interconnected by force transmission, particularly along or substantially along the stacking direction (SR).

13. A method for installing a fuel cell tower (10) having the features of any one of claims 1 to 12, characterized in that, The installation method includes the following steps: - At least two fuel cell stacks (30) are stacked along the stacking direction (SR) within the shell space (22) of the shell (20). - At least one counterweight (40) is brought into contact with the uppermost fuel cell stack (30) within the housing space (20) in a manner that transfers the counterweight gravity (GK). - Close the housing (20).

14. A method for transporting and securing a fuel cell tower (10) having the features of any one of claims 1 to 12, characterized in that, The transportation and fixing method includes the following steps: -At least one transport fixing element (80) is arranged within the housing space (22) at a fixed position (SPO) between the housing (20) and at least one counterweight (40). - Secure the at least one transport fixing element (80) at the fixed position (SPO).

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