Module for electrolysis system with crane

The modular electrolysis plant system with a crane and guide device simplifies the assembly, maintenance, and replacement of electrolysis stacks by ensuring precise positioning and reducing explosion risk, addressing the challenges of large mass and multi-level arrangements in industrial settings.

WO2026061656A1PCT designated stage Publication Date: 2026-03-26SIEMENS ENERGY GLOBAL GMBH & CO KG
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-07-21
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

The assembly, maintenance, and replacement of electrolysis stacks in industrial water electrolysis plants are challenging due to their large mass and the need for precise dimensional tolerances, which existing transport methods like forklifts and gantry cranes are inadequate for compact systems and multi-level arrangements, limiting design flexibility and accessibility.

Method used

A modular electrolysis plant system comprising a module frame with a crane that includes a guide device and a load-handling device, allowing precise movement and positioning of electrolysis stacks within the module, enabling transport and installation without additional lateral access points, and powered by muscle force to reduce explosion risk.

Benefits of technology

This system simplifies assembly, maintenance, and replacement of electrolysis stacks by enhancing positioning accuracy and reducing the risk of explosion, while allowing for more efficient transport and space-saving designs in industrial settings.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a module for an electrolysis system. The module comprises a plurality of electrolysis stacks, a module frame which defines a receiving volume and defines a receiving plane, and a crane. In an installation position, the electrolysis stacks are detachably connected to the module frame and positioned on the receiving plane. The crane is connected to the module frame and comprises at least one guide device, a trolley and a load-handling device. The trolley can be moved along the at least one guide device.
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Description

[0001] 2024PF00293

[0002] 1

[0003] Description

[0004] Module for electrolysis plant with crane

[0005] The present invention relates to devices for electrolysis, in particular devices for water electrolysis.

[0006] Due to the increasing share of renewable energies in electricity generation, water electrolysis for the production of hydrogen and oxygen is becoming increasingly important.

[0007] Industrial water electrolysis plants typically operate multiple electrolysis stacks for water electrolysis, each comprising a multiple electrolysis cells.

[0008] These stacks must be connected to a power supply, a water supply, and a product discharge or collection line for the reaction products hydrogen and oxygen. Therefore, setting up the stacks in an electrolysis plant is quite complex. In particular, tight dimensional tolerances must be maintained regarding the placement of the electrolysis stacks.

[0009] These dimensional tolerances must be adhered to not only during the assembly or pre-assembly of the electrolysis stacks, but also during the replacement or maintenance of the electrolysis stacks.

[0010] This is particularly challenging because the electrolysis stacks for use in large-scale plants have an empty mass of up to 2 tons per stack. Therefore, such electrolysis stacks have previously been moved using forklifts or mobile gantry cranes.

[0011] However, these two solutions are not always suitable for compact systems. The positioning precision with 2024PF00293

[0012] 2

[0013] The number of forklifts is limited, which can be problematic for the reasons mentioned above.

[0014] Gantry cranes require both sufficient ceiling height and unobstructed access from above. However, in large-scale industrial plants, electrolysis stacks can be arranged on multiple levels, making it not always possible to reach all stacks from above.

[0015] Furthermore, both transport with forklifts and transport with gantry cranes restrict the design possibilities when creating pre-assembled components.

[0016] One object of the invention is to provide an improved assembly for use in an electrolysis plant.

[0017] Another optional objective of the invention is to improve the maintainability of an assembly for use in an electrolysis plant.

[0018] A further, optional object of the invention is to provide a pre-assembled assembly for use in an electrolysis plant with electrolysis stacks in multiple levels.

[0019] A solution to this problem is provided in the independent claims. Further advantageous embodiments of the invention are described in the dependent claims, the following description, and the figures.

[0020] In the first aspect, a module for an electrolysis plant is described. The module comprises a plurality of electrolysis stacks, a module frame, and a crane.

[0021] The module frame defines a receiving volume and a receiving plane. In one installation position, the electrolysis stacks are detachably connected to the module frame and arranged on the receiving plane. 2024PF00293

[0022] 3

[0023] The crane is connected to the modular frame. The crane comprises at least one guide device, a trolley, and a load-handling device. The trolley can be moved along the at least one guide device. In other words, the trolley is movable along the at least one guide device; that is, the trolley is movably connected to the at least one guide device.

[0024] This design optionally and advantageously allows for the movement and positioning of electrolysis stacks within the module. In particular, electrolysis stacks from parallel rows can be transported in or out of the module without additional lateral access points.

[0025] The electrolysis stacks can be for water electrolysis. In particular, they can be proton exchange membrane electrolysis stacks.

[0026] Electrolysis stacks can comprise a large number of electrolysis cells for water electrolysis. The electrolysis cells of a stack can be electrically connected in series.

[0027] The module frame can comprise a cage-like structure. The module frame can be made of rod-shaped elements. However, the module frame can also, for example, have feet and a cage-like part. The module frame can, for example, additionally include feet.

[0028] The intake volume defined by the module frame can be a volume for accommodating components for water electrolysis. This intake volume can be located within the module frame.

[0029] At least part of the intake volume, in particular the entire intake volume, can be enclosed by a cage-like structure of the module frame in the case of such a structure. 2024PF00293

[0030] 4

[0031] The recording plane is preferably located within the recording volume. It can, for example, define a bottom surface of the recording volume.

[0032] Sections of the acquisition plane can be defined by parts of the module frame. However, the acquisition plane can also be located above lower parts of the module frame, for example, if the electrolysis stacks are connected to the module frame via intermediate elements.

[0033] The recording plane can also be referred to as the common recording plane. The recording plane can be common to all electrolysis stacks.

[0034] The module frame can define a width direction, a height direction, and a length direction. The electrolysis stacks can be arranged in two rows within the receiving volume, with each row extending lengthwise.

[0035] The module can have sufficient free space between the two rows to transport an electrolysis stack.

[0036] The crane can be designed to lift an electrolysis stack into an installation position using the load handling device, to move the electrolysis stack from the installation position into the free space using the guide device, preferably further through the free space to an outer end of the module frame, and to set down the electrolysis stack.

[0037] The crane can be designed to lift an electrolysis stack in an installation position using the load handling device, and to move the electrolysis stack from the installation position into the free space using the guide device, preferably through the free space to an outer end of the 2024PF00293

[0038] 5

[0039] to move the module frame and detach the electrolysis stack.

[0040] This can optionally simplify the maintenance and / or replacement of the module's electrolysis stacks.

[0041] The crane can also be designed to lift an electrolysis stack at an outer end of the free space using the load handling device, move the electrolysis stack into the installation position using the guide device, and set the electrolysis stack down.

[0042] This can optionally simplify the manufacturing of the module and increase positioning accuracy. In particular, the module frame can optionally be largely fully assembled before the electrolysis stacks are mounted, thus simplifying modular manufacturing.

[0043] Preferably, the crane can be designed to move an electrolysis stack out of the module frame along one long side of the module. This allows the free space between the rows to be advantageously used for moving the electrolysis stacks.

[0044] The crane can be designed to be powered by muscle power.

[0045] In particular, the guide mechanism can be designed so that the trolley can be moved by muscle power. Additionally, the crane can include a device that allows an electrolysis stack to be lifted by muscle power.

[0046] This can optionally and advantageously reduce the risk of explosion in the module. 2024PF00293

[0047] This can also optionally and advantageously allow the crane to be operated during a disconnection of the module from the power supply, thus simplifying maintenance and / or replacement in case of fault.

[0048] The crane may have a chain drive. The crane may be designed to move the load-handling device vertically using the chain drive.

[0049] Optionally, an electrolysis stack can be advantageously lifted using muscle power.

[0050] The electrolysis stacks can be configured for connection to an adapter. The adapter can be configured for connection to the load handling device.

[0051] For example, the adapter can be designed as an adapter plate with at least one crane eye, for example at least one shackle, at least one anchor point and / or at least one connecting bracket.

[0052] The module can include at least one such adapter.

[0053] The at least one guide device can comprise at least one guide rail. The at least one guide rail can be connected to the module frame.

[0054] The at least one guide rail can be detachably connected to the module frame. At least one section of the at least one guide rail can be detachably connected to the module frame.

[0055] Thus, the guide rail or at least one section of the at least one guide rail can optionally and advantageously be detached from the module frame before transport and reconnected to the module frame after transport, so that an electrolysis stack can be lifted out of / into the module frame by crane. 2024PF00293

[0056] 7 can be transported without increasing the module's transport dimensions.

[0057] The at least one guide rail can, for example, be designed as at least one C-rail.

[0058] The at least one guide rail is preferably designed as a pair of guide rails connected to the module frame. As described above, at least one section of the pair of guide rails can be detachably connected to the module frame.

[0059] The at least one guide device can include a cross rail. The cross rail can be movably connected to the guide rail. For example, the cross rail can be connected to the guide rail via rollers or sliding bearings.

[0060] Preferably, the cross rail is connected to the pair of guide rails.

[0061] The cross rail can essentially extend in the width direction of the module frame.

[0062] Optionally, a module with an easily mounted crane is advantageously provided, which allows crane loads, especially electrolysis stacks, to be picked up and / or set down in a large area of ​​the receiving plane.

[0063] The cross rail can be designed as a double-T beam. This can optionally result in a high stiffness of the cross rail.

[0064] The load-handling device can, for example, be designed as a crane hook. However, the load-handling device can also be adapted to the adapter, for example. 2024PF00293

[0065] 8

[0066] The trolley can be movably connected to the cross rail.

[0067] The at least one guide rail, preferably the pair of guide rails, can extend in the longitudinal direction of the module frame. The at least one guide rail, preferably the pair of guide rails, can be connected to the module frame.

[0068] For example, at least one guide rail can be screwed to the module frame. At least one section of the at least one guide rail can be welded to the module frame.

[0069] The at least one guide device can be arranged in a projection in the longitudinal direction and / or in a projection in the width direction within the module frame.

[0070] This allows the guide device to optionally remain on the module frame during transport, without increasing the external dimensions of the module frame, thus further simplifying the transport of the module.

[0071] In such designs, for example, an opening may be provided on one long side of the module on the underside of the module frame to lower electrolysis stacks to a level below the receiving plane.

[0072] The at least one guide rail, preferably the pair of guide rails, can extend along at least one longitudinal side of the module frame in the longitudinal direction beyond one end of the module frame.

[0073] Preferably, the crane can be designed to move an electrolysis stack out of the module frame along one long side of the module. 2024PF00293

[0074] 9

[0075] The crane can be designed to lower an electrolysis stack to a position below the receiving level.

[0076] Preferably, the crane can be designed to lower an electrolysis stack to a position at least 2.5m, more preferably at least 3.5m below the receiving plane.

[0077] The crane can optionally be used advantageously for replacing and / or maintaining electrolysis stacks in a module above a base level of the electrolysis plant, for example in the case of stacked modules.

[0078] In such designs, the guide device, or at least a part of it, can be configured to be connected to the module frame after the module has been transported to the electrolysis plant. Optionally, the guide device, or at least a part of it, can be configured to be detached from the module frame before the module is transported.

[0079] The module frame can have a length of no more than 19.25 m, a width of no more than 3.5 m, and / or a height of no more than 3.75 m.

[0080] Preferably, the module frame can have a length of at most 13.6 m, a width of at most 3 m and / or a height of at most 3.75 m.

[0081] Optionally, the module with the electrolysis stacks can be transported more easily by truck via the public road network, since the electrolysis stacks are located within the intake volume defined by the module frame.

[0082] Each electrolysis stack can have an empty mass of 1.0 t, preferably 1.5 t, and more preferably 2.0 t. 2024PF00293

[0083] 10

[0084] For example, each electrolysis stack can have an empty mass of 2.3 tons.

[0085] This can optionally and advantageously increase the throughput and / or efficiency of the module.

[0086] The module frame can be configured for transporting the electrolysis stacks with a minimum amount of water per stack, for example, approximately 100 liters of water per stack. This can advantageously prevent the PEM membranes from drying out.

[0087] In such designs, the use of the exposed crane can be particularly advantageous.

[0088] In some versions, the crane does not have an electric drive. In particular, in some versions, the module does not have an electric drive unit.

[0089] This can optionally further reduce the risk of explosion in the module.

[0090] This also optionally allows the crane to be operated advantageously during a disconnection of the module from a power supply, thus further simplifying maintenance and / or replacement in case of fault.

[0091] The module can be stacked. This allows for the advantageous arrangement of at least two modules on top of each other in the electrolysis plant, thus enabling a more space-saving design.

[0092] In particular, the module may have receptacles on an upper side that are suitable for receiving centering elements on an underside of the module.

[0093] The module frame can consist of welded and / or bolted metal elements. 2024PF00293

[0094] 11

[0095] In a second aspect, a method for transporting an electrolysis stack is described. The method includes the use of the exposed module. The method further includes lifting the electrolysis stack with the aid of a crane, moving the electrolysis stack, preferably in a substantially horizontal plane, and setting down the electrolysis stack with the aid of a crane.

[0096] This can optionally simplify the assembly, replacement and / or maintenance of the electrolysis stack, in particular the electrolysis stack in the module or in the electroanalysis system.

[0097] As described above, the method can involve lifting the electrolysis stack outside the module frame and placing the electrolysis stack in an installation position. Optionally, this can advantageously simplify the (pre-)assembly of the module.

[0098] The method may include lifting the electrolysis stack within the module frame and lowering the electrolysis stack outside the module frame, particularly below the recording plane.

[0099] This can optionally simplify the maintenance and / or replacement of electrolysis stacks in electrolysis plants with stacked modules.

[0100] The invention is further explained with reference to the accompanying illustrations. These illustrations show

[0101] Figure 1 shows an isometric view of a module for an electrolysis plant;

[0102] Figure 2 shows a side view of the module for an electrolysis plant;

[0103] Figure 3 shows a top view of the module for an electrolysis plant; 2024PF00293

[0104] 12

[0105] Figure 4 shows a rear view of the module for an electrolysis plant, with a crane of the module visible;

[0106] Figure 5 shows a rear view of the module for an electrolysis plant, with components of the crane not shown;

[0107] Figure 6 shows a front view of the module for an electrolysis plant.

[0108] The invention is further explained below with reference to the figures. In the figures, identical elements are provided with the same reference numerals and are not explained multiple times to avoid duplication.

[0109] Figure 1 shows a module 10 for an electrolysis plant. In the embodiment shown in Figure 1, the module 10 comprises a module frame 12, which defines a receiving volume.

[0110] The module further comprises a plurality of electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g, which are arranged in the receiving volume.

[0111] The electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g are connected to at least one water supply line 30a, 30b, 30c, 30d. In the example of Figure 1, each product side of an electrolysis stack is connected to a water supply line 30a, 30b, 30c, 30d.

[0112] The electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, and 40g are configured to produce hydrogen and oxygen from water using electrical energy. The example shown in Figure 1 uses protone exchange membrane electrolysis stacks (PEM electrolysis stacks). However, modules with other electrolysis stacks are also conceivable, e.g., electrolysis stacks for alkaline water electrolysis.

[0113] Industrial electrolysis plants typically operate a large number of electrolysis stacks for water electrolysis. 2024PF00293

[0114] 13

[0115] Transporting and setting up the electrolysis stacks involves technical effort.

[0116] In particular, assembling the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, and 40g with sufficient accuracy on an electrolysis plant construction site can be challenging. Furthermore, assembling components of Module 10 on-site is often more difficult than in an industrial manufacturing environment. For example, the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, and 40g can each have an empty mass of 2.0–2.3 t, e.g., 2.1 t. Precisely moving components of such mass generally requires the use of a crane, as sufficiently precise positioning is usually not possible with forklifts.

[0117] The modules are often transported via the public road network and / or by sea. Therefore, it is desirable to be able to transport the modules as easily as possible by truck, and to provide as many electrolysis stacks as possible per module.

[0118] In the example shown in Figure 1, module 10 comprises a total of 10 electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g. Each electrolysis stack has one side with an electrical cathode connection and one side with an electrical anode connection. These are further explained with reference to Figure 3.

[0119] The module 10 shown in Figure 1, for example, can have an empty mass between 35 t and 45 t.

[0120] In the example shown in Figure 1, module 10 also includes a crane 60. A guide rail 68b of the crane 60 is shown in Figure 1. This guide rail 68b can, for example, be attached to the installation site after the module frame with the mounted electrolysis stacks has been transported, in order to determine the length of the 2024PF00293

[0121] 14

[0122] To limit the movement of module 10 during transport. However, guide rail 68b can also be pre-installed before transport to limit on-site assembly effort.

[0123] As can be seen from Figure 1, the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g are arranged within a receiving volume defined by the module frame 12.

[0124] As can be seen from Figure 1, the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g are arranged in two parallel rows 18a, 18b in the longitudinal direction of the module 10.

[0125] Figure 2 shows a side view of module 10.

[0126] Figure 2 shows the module frame 12 and a plurality of frame elements 14a, 14b, 14c, 14d that the module frame 12 comprises. The frame elements 14a, 14b, 14c, 14d can, for example, be designed as rod-shaped elements.

[0127] The frame elements 14a, 14b, 14c, 14d can, for example, be screwed and / or welded together.

[0128] The electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g in Figure 2 each have a connection 46a for connection to a Cp manifold of the electrolysis plant and a connection 48a for connection to an H2 manifold of the electrolysis plant.

[0129] The electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g of module 10 are connected in series. The electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g are electrically connected by busbars. A plurality of busbars 50a, 50b, 50c, 50d, 50e are visible in Figure 2. These busbars 50a, 50b, 50c, 50d, 50e electrically connect adjacent electrolysis stacks as well as the two foremost electrolysis stacks of each row (left in Figure 2). 2024PF00293

[0130] 15

[0131] Module 10 has terminals 54a and 54b on its rear side (right in Figure 2) for connection to the power supply. These are shown in more detail in Figure 4.

[0132] In the example shown in the figures, the rearmost electrolysis stack of each row 18a, 18b is connected to the power supply. This results in a U-shaped current path between terminals 54a, 54b for connection to the power supply, as seen from a top view.

[0133] In operation, a current of, for example, 1 OkA can be carried.

[0134] Figure 3 shows a top view of module 10. In Figure 3, among other things, the water supply pipelines 30a, 30b, 30c, 30d already described can be seen below the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g.

[0135] The electrolysis stacks each have at least one electrical cathode connection 42a, 42b and one electrical anode connection 44a, 44b .

[0136] For the stacks in the example shown in the figures, the at least one anode connection 44a, 44b j is arranged on a first side of the stack, and the at least one cathode connection 42a, 42b j is arranged on a second side of the stack opposite the first.

[0137] In the example shown in the figures, the electrolysis stacks of a row are oriented such that the sides of the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g, which have the anode terminals 44a, 44b and the cathode terminals 42a, 42b, are each oriented perpendicular to the longitudinal direction of the module 10. Furthermore, the electrolysis stacks 40a, 40b, 40c, 40d, 40e in a first row are oriented essentially antiparallel to the electrolysis stacks in a second row. 2024PF00293

[0138] 16

[0139] Thus, a U-shaped current flow is obtained in a view from a vertical direction. Furthermore, the connections 54a and 54b to the power supply are accessible from the same longitudinal side of the device, simplifying the connection to the power supply. In addition, in the example of Figure 3, no additional conductor is required to connect the foremost electrolysis stack 40f to a power supply connection.

[0140] The module can be configured, for example, for use with a voltage between 1.0 and 1.5 kV.

[0141] The busbars, for example, have an elastic region 52a, 52b between each pair of stacks with a lower stiffness compared to the rest of the busbar. This allows thermally induced strains during operation of the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g to be advantageously compensated.

[0142] Figure 3 also shows the guide rails 68a, 68b of the crane and a cross rail 70 of the crane guided by the guide rails.

[0143] The guide rails 68a, 68b are designed as C-rails in the example shown in Figure 3. The cross rail 70 of the crane is designed as a double-T beam in the example shown in Figure 3.

[0144] Figure 4 shows a rear view of module 10. Figure 4 shows, among other things, the guide rails 68a, 68b of the crane, the cross rail 70 of the crane, a trolley 62, a chain drive 66 and a load handling device 64.

[0145] The trolley is mounted on the cross rail 70 of the crane so that it can slide in a lateral direction of the module. A lifting gear, in the case of Figure 4 a chain drive 66, is attached to the trolley. The lifting gear allows the load-handling device 64 to be moved in a vertical direction. 2024PF00293

[0146] 17

[0147] In the example shown in Figure 4, the chain drive 66 is designed to be driven manually. Furthermore, the chain drive 66 is designed so that an electrolysis stack 40a, 40b, 40c, 40d, 40e, 40f, 40g can be lifted by muscle power using the crane 60.

[0148] This allows electrical machines to be avoided near the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g and reduces the risk of explosion.

[0149] The load-handling device 64 is designed as a crane hook in the example shown in Figure 4. However, the load-handling device 64 can also be designed as an eyelet, for example.

[0150] Furthermore, Figure 4 shows the connections 54a and 54b for connecting to the power supply of the rearmost electrolysis stacks of each row. In the example of Figure 4, these are each configured as electrode connections for the two rearmost electrolysis stacks.

[0151] Furthermore, connections 46b and 48b for connection to the O2 and H2 manifolds are shown. As can be seen, the Model 10 is designed to be connected to two product manifolds arranged laterally next to the Module 10.

[0152] In the plant, the product collection lines transport the respective products further in the electrolysis plant, e.g. to respective collection facilities or for further processing.

[0153] Figure 4 also shows the busbars 50b, 50h, 50g for connecting the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g.

[0154] In the example shown in the figures, the busbars 50b, 50a on the front of module 10 form a clearance through which maintenance access is provided between the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g. 2024PF00293

[0155] 18

[0156] Figure 5 shows another rear view of module 10. In Figure 5, some components of the crane 60 are not shown, so that the guide rails 68a, 68b of the crane are more clearly visible.

[0157] Figure 5 also shows the rows 18a, 18b of the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g, which extend longitudinally along the module. The electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g are arranged on a common receiving plane 16. In the example of Figure 5, the common receiving plane 16 is defined, among other things, by the frame element 14e.

[0158] Figure 5 also shows electrically insulating connecting lines 32a, 32b between water inlets of the electrolysis stacks 40a, 40b, 40c, 40d, 40e, 40f, 40g and the water supply lines 30a, 30b, 30c, 30d.

[0159] In the example of Figure 5, the connecting lines 32a, 32b are connecting pipe sections.

[0160] figure

[0161] Figure 6 shows a front view of module 10.

[0162] Figure 6 shows the foremost electrolysis stacks 40e, 40f of the two rows 18b, 18a.

[0163] Likewise, the passage formed by busbars 50a and 50b can be seen.

[0164] A person skilled in the art will readily recognize that these embodiments merely represent examples of various ways to implement the invention. Accordingly, the embodiments shown are not to be understood as limiting the possible combinations of features of the disclosed invention. Rather, the disclosure encompasses all possible combinations and configurations of the described features according to the invention.

Claims

2024PF00293 19 Patent claims 1. Module (10) for electrolysis plant, comprising - a plurality of electrolysis stacks (40a, 40b, 40c, 40d, 40e, 40f, 40g) , - a module frame (12) which defines a receiving volume and a receiving plane, wherein the electrolysis stacks are detachably connected to the module frame (12) in an installation position and are arranged on the receiving plane (16), and - a crane (60) ; wherein the crane is connected to the module frame (12), and wherein the crane (60) comprises at least one guide device, a trolley (62) and a load handling device (64), wherein the trolley (62) can be moved along the at least one guide device.

2. Module (10) according to the preceding claim, wherein the module frame (12) defines a width direction, a height direction and a length direction, wherein the electrolysis stacks (40a, 40b, 40c, 40d, 40e, 40f, 40g) are arranged within the receiving volume in two rows (18a, 18b), the rows (18a, 18b) each extending in the length direction, wherein the module (10) has sufficient clearance between the two rows (18a, 18b) for transporting an electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g), and wherein the crane (60) is designed to lift an electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) under Using the load-handling device (64) to lift the electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) in its installed position, to move the electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) from the installed position into the free space using the guide device, preferably further through the free space to an outer end of the module frame (12), and to move the electrolysis stack (40a, 40b, 40c, 40d, 40e,40f, 40g) to discontinue. 2024PF00293 20 3. Module (10) according to one of the preceding claims, wherein the crane (60) is designed to be driven by muscle power.

4. Module (10) according to one of the preceding claims, wherein the crane (60) has a chain drive (64), wherein the crane (60) is designed to move the load handling device (64) in the vertical direction by means of the chain drive (64).

5. Module (10) according to one of the preceding claims, wherein the at least one guide device comprises at least one guide rail (68a, 68b) connected to the module frame (12), preferably a pair of guide rails connected to the module frame (12).

6. Module (10) according to the previous claim, wherein the at least one guide device comprises a transverse rail (70) which is movably connected to the guide rail (68a, 68b), preferably to the pair of guide rails.

7. Module (10) according to the previous claim, wherein the trolley (62) is movably connected to the cross rail (70).

8. Module (10) according to one of the preceding claims 5-7, wherein the guide rail (68a, 68b) , preferably the pair of guide rails, extends in the longitudinal direction of the module frame (12) and is connected to the module frame (12).

9. Module (10) according to one of the preceding claims, wherein the at least one guide device is arranged in a projection in the longitudinal direction and / or in a projection in the width direction within the module frame (12).

10. Module (10) according to one of the two preceding claims, wherein the at least one guide rail (68a, 68b), preferably the pair of guide rails, is located on at least one 2024PF00293 21 The longitudinal side of the module frame (12) extends in the longitudinal direction beyond one end of the module frame, preferably wherein the crane (60) is designed to move an electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) out of the module frame (12) on a longitudinal side of the module (10).

11. Module (10) according to one of the preceding claims, wherein the crane (60) is designed to lower an electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) to a position below the receiving plane (16), preferably to a position at least 2.5m, more preferably at least 3.5m below the receiving plane (16).

12. Module (10) according to any of the preceding claims, wherein the module frame (12) has a length of at most 19.25 m, a width of at most 3.5 m and / or a height of at most 3.75 m.

13. Module (10) according to one of the preceding claims, wherein each electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) has an empty mass of 1.0t, preferably 1.5t, and more preferably 2.0t.

14. Module (10) according to one of the preceding claims, wherein the crane (60) does not have an electric drive, in particular wherein the module (10) does not have an electric drive unit.

15. Method for transporting an electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) , comprising - Use of the module (10) according to any of the preceding claims, - Lifting an electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) using the crane (60) , - Moving the electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) , preferably in a substantially horizontal plane, and 2024PF00293 22 - Deployment of the electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) using the crane (60) .

16. Method for transporting an electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) according to the preceding Claim, comprehensive - Lifting the electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) using the crane (60) into an installation position of the electrolysis stack, - Moving the electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) with the help of the crane (60) , and - Deposition of the electrolysis stack (40a, 40b, 40c, 40d, 40e, 40f, 40g) using the crane (60) below the receiving level (16), preferably at a position at least 2.5m, more preferably at least 3.5m below the receiving level.

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