Boxer module for an electrochemical cell system

Abstract

A boxer module (10) for an electrochemical cell system (200), comprising a plurality of cell stacks (100) arranged one above another along a boxer direction (BR), each having a fuel section with a fuel supply section (122) for supplying fuel supply gas (KZG) and a fuel discharge section (124) for discharging fuel exhaust gas (KAG) and an air section having an air supply section (132) for supplying air supply gas (LZG) and an air discharge section (134) for discharging air exhaust gas (LAG), wherein at least one common module gas-conducting section (110) is arranged between two cell stacks (100) with a conducting direction (FR) transverse to the boxer direction (BR) such that the module gas-conducting section (110) separates a first module region (M1) with a first subset (T1) of the cell stacks (100) from a second module region (M2) with a second subset (T2) of the cell stacks (100), wherein the module gas-conducting section (110) is in common fluid-communicating connection with the fuel supply section (122), the fuel discharge section (124), the air supply section (132) or the air discharge section (134) of the cell stacks (110) of the two subsets (T1, T2) of the cell stacks (100) along the boxer section (BR).

Description

[0001] Boxer module for an electrochemical cell system

[0002] The present invention relates to a boxer module for an electrochemical cell system and to an electrochemical cell system with at least one such boxer module.

[0003] It is known that electrochemical cell systems are used to generate electricity as fuel cell systems or to produce fuel in the form of combustible gas from electricity as electrolysis systems. Individual electrochemical cells are often combined in stacks to form cell stacks. For the operation of such cell stacks, supply gases must be added to the stack and exhaust gases removed. Electrochemically, such cell stacks can be divided into a fuel section and an air section. Accordingly, air supply gas must be added to the air section and exhaust gas removed. Similarly, fuel supply gas is added to the fuel section and exhaust gas is removed.

[0004] A disadvantage of known electrochemical cell systems is the high complexity of the fluid communication for the individual gases. For each gas, a separate and, in particular, controllable supply connection is required for fluid communication, both on the supply and discharge sides. Similarly, fluid communication, preferably in a controllable manner, must also be provided on the discharge side. Known electrochemical cell systems consequently feature elaborate piping systems, which are highly complex in terms of both space requirements and assembly effort.

[0005] It is therefore an object of the present invention to overcome, at least partially, the disadvantages described above in a cost-effective and simple manner. In particular, it is an object of the present invention to improve the compactness of an electrochemical cell system with multiple cell stacks in a cost-effective and simple manner.

[0006] The foregoing problem is solved by a boxer module with the features of claim 1 and an electrochemical cell system with the features of claim 10. Further features and details of the invention will become apparent from the dependent claims, the description, and the drawings. Features and details described in connection with the boxer module according to the invention naturally also apply in connection with the electrochemical cell system according to the invention, and vice versa, so that the disclosure regarding the individual aspects of the invention always refers, or can refer, to each other.

[0007] According to the invention, a boxer module for an electrochemical cell system is designed and comprises a plurality of cell stacks arranged one above the other along a boxer orientation. Each of these cell stacks is equipped with a fuel section comprising a fuel supply section for supplying fuel gas and a fuel discharge section for removing fuel exhaust. Furthermore, each cell stack comprises an air section comprising an air supply section for supplying air gas and an air discharge section for removing air exhaust gas.

[0008] A boxer module according to the invention is characterized in that at least one common module gas guide section is arranged with a guide direction transverse to the boxer direction and between the cell stacks. This module gas guide section thus separates a first module area with a first subset of the cell stacks from a second module area with a second subset of the cell stacks. The module gas guide section is in common fluid communication with the fuel supply section, the fuel discharge section, the air supply section, or the air discharge section of the cell stacks of both subsets of the cell stacks along the boxer direction. Thus, the module gas guide section is in fluid communication with exactly one of the four possible sections with each of the cell stacks.

[0009] The core concept of the invention is based on combining a particularly compact design and an increased specific volumetric power density with compact and simplified fluid communication. A particularly compact design is achieved through the construction referred to here as the boxer design, which is why the electrochemical cell system module designed according to the invention is also called a boxer module. The term "boxer" is borrowed from the boxer engines known from the field of internal combustion engines, in which the individual cylinders are arranged opposite each other along a boxer axis. According to the invention, a boxer module is equipped with a plurality of cell stacks. These cell stacks are preferably all identical or substantially identical in construction and are provided with individual cells stacked along a stacking direction.The individual cell stacks are aligned along a boxer axis, meaning they are arranged either one above the other or opposite each other. Each cell stack is configured with the appropriate gas components for the functionality of the electrochemical cell system, enabling the electrochemical conversion of fuel gas and air gas to fuel exhaust and air exhaust. It should be noted that the terms "air" and "fuel" refer to the respective sections of the cell stack and do not specify an exact gas composition. Rather, the electrochemical cells form a fuel side and an air side. During fuel cell operation, fuel is converted on the fuel side, consuming oxygen on the air side to generate electricity.When used in electrolysis operation, fuel in the form of fuel gas is produced on the fuel side using electrical current.

[0010] The core concept of the invention is based on significantly simplifying the gas flow functionality. This is achieved by providing at least one common module gas flow section. A common module gas flow section is a gas flow section for guiding exactly one of the process gases for this boxer module and thus jointly for all corresponding sections of the cell stacks along the boxer direction. The core concept is based, in particular, on the fact that with a common module gas flow section, all cell stacks along the boxer direction can now be supplied jointly with this specific process gas, i.e., the fuel supply gas, the fuel exhaust gas, the air supply gas, or the exhaust gas. In a first step, it is irrelevant for which of these process gases the module gas flow section is designed.It can even offer advantages if a common, and therefore gas-specific, module gas guide section is provided for each of two, more, or even all process gases of the cell stack. This means that a separate, and therefore gas-specific, module gas guide section is provided for each of two or more process gases. The advantages of the invention are achieved even if only one such common module gas guide section is provided. The advantages are explained below using an example where the central common gas guide is provided for the fuel supply gas. In such a case, the module gas guide section is arranged between the cell stacks, thus separating the cell stacks into a first module section and a second module section.The first and second module areas are thus positioned opposite each other, forming the boxer configuration of the individual active system components, familiar from the internal combustion engine sector, but here in the form of cell stacks. Preferably, each subset has at least one cell stack; however, the advantages can be maximized if each subset forms two or more cell stacks into a correspondingly larger boxer stack.

[0011] According to the invention, a common supply or discharge of the respective process gas is now possible for all cell stacks of all subsets of all module areas. When used for the fuel supply gas, the module gas supply section can thus supply the fuel supply gas to the boxer module and, accordingly, pass it on and distribute it to all fuel supply sections of all cell stacks via the fluid-communicating connection. In a similar or even identical manner, the intake of fuel exhaust gas, the supply of air supply gas, or the discharge of air exhaust gas can also take place with a separate module gas supply section, each specific to that process gas.Because the guiding direction of the module gas guide section is now essentially arranged perpendicular to the boxer direction, the cell stacks can be arranged side by side, while the corresponding process gas can be conveyed and guided perpendicular to this along the guiding direction through the module gas guide section.

[0012] Later, with reference to the electrochemical cell system, it will be explained that this not only allows for a significant improvement in compactness and a reduction in complexity for the Boxer module itself, but also enables the combination of multiple Boxer modules to form module rows and / or module packs. This provides virtually unlimited scalability, allowing the electrochemical cell system to offer arbitrarily high electrical power outputs, preferably along or even perpendicular to the guide direction.

[0013] It should also be noted that this Boxer module can be used for both power generation and fuel gas production. For example, the electrochemical cell system equipped with it can be operated as a SOFC plant to generate electricity from fuel gases. Conversely, it is also conceivable to use a suitably configured electrochemical cell system with one or more Boxer modules to produce fuel in the form of fuel gases while simultaneously consuming electricity. In both cases, the individual Boxer modules offer the described advantages in terms of compactness and reduced complexity for their respective applications.

[0014] It can be advantageous if, in a boxer module according to the invention, at least one of the two subsets has two or more cell stacks arranged one above the other along the boxer direction. In particular, this results in at least one-sided, double stacking of the cell stacks being provided. The more cell stacks are arranged on one side, and thus in one of the two module areas, the higher the power density of the boxer module becomes. At the same time, a slight increase in complexity, without an unnecessarily large increase in the required installation space, allows for further utilization of the advantages of a boxer module according to the invention. Thus, while maintaining the advantages, a further maximization of flexibility and electrochemical cell functionality is achieved with regard to compactness and reduced space requirements.

[0015] It can be advantageous if the number of cell stacks in the two subsets of a boxer module according to the invention is identical. This leads to a symmetrical design, which can also be described as boxer symmetry in the boxer module, so that preferably both subsets of the two module areas are identical. For example, two cell stacks are provided on each side, or even more than two cell stacks on each side. The symmetrical design in this embodiment achieves fluid symmetry, particularly with regard to the fluid-communicating connection, thus ensuring simplified control of the fluid-communicating connection and the conveyance of the respective process gas to and from the individual cell stacks. If, for example, two cell stacks are provided per subset, the boxer module can also be referred to as a double boxer module.

[0016] Furthermore, it is advantageous if, in a boxer module according to the invention, at least a second module gas guide section is arranged with a guide direction transverse to the boxer direction for guiding a gas different from that of the first module gas guide section. Thus, the advantages of increased compactness and reduced complexity according to the invention can also be provided for a second process gas of the electrochemical cell system. The advantages are therefore also guaranteed for other process gases, so that the optimization possibilities according to the invention are multiplied in this way. It is also possible for the guide directions of all module gas guide sections to be aligned parallel or substantially parallel to each other and thus extend transversely to the boxer direction.For example, a first module gas guide section for the fuel supply gas and a second module gas guide section for the fuel discharge gas can be provided for the fuel section of the individual cell stacks.

[0017] Further advantages can be achieved if, in a boxer module according to the invention as described in the preceding paragraph, a specific common module gas guide section with a guide direction transverse to the boxer direction is arranged for each gas of the cell stacks. It should also be noted that it is sufficient if at least one of the common module gas guide sections is arranged between the cell stacks. Depending on the actual application and, in particular, the size of the electrochemical cell system, additional second or further common module gas guide sections can also be advantageously arranged next to the individual cell stacks. However, the arrangement of the guide direction transverse to the boxer direction is maintained, so that the respective module gas guide section is arranged not only between the cell stacks but also laterally to the cell stacks.

[0018] It is also advantageous if, in a boxer module according to the invention, at least one module gas guide section has at least one feed section to at least one cell stack along the boxer direction. Such a feed section serves to bridge the distance between a nearby cell stack and a cell stack located further away from the module gas guide section. While most of the advantages are already achieved when a direct fluid-communicating connection is provided between an adjacent cell stack and the module gas guide section, such a separate feed section can not only ensure a greater distance can be bridged, but also, when control systems such as control valves are integrated, provide easier and improved controllability of the individual cell stacks in the boxer module.

[0019] Further advantages can arise if, in a boxer module according to the preceding paragraph, at least one feed section extends laterally alongside a cell stack near the module gas guide section in one of the two module areas, connecting to a cell stack further away from the module gas guide section. This feed section contains a subset of more than one cell stack. As explained above, there are embodiments with a so-called double boxer module, such that two or even more cell stacks are arranged in a subset and thus in one of the two module areas. For the fluid-communicating connection to the cell stack further away from the module gas guide section, such a feed section serves as a fluid-communicating bridge, in order to realize the advantages of the compact design according to the invention with slightly increased complexity, but still with reduced and thus optimized installation space.

[0020] Further advantages can also be achieved if, in a boxer module according to the invention, an electrical insulation layer is arranged between two cell stacks of one of the two subsets and / or between one of the fuel cell stacks and the module gas guide section, transverse to the boxer direction, for electrical insulation of the two cell stacks from each other and / or from the module gas guide section. This can be, for example, an inserted, separate insulation layer, but also an electrical insulation layer integrated directly into the respective cell stack and / or the module gas guide section. This simple sandwich-like structure allows for a simplified procedure, particularly during the assembly of the cell stacks and the boxer module. This enables a simple, sequential, and modular assembly of the individual cell stacks, which are then stacked on top of each other along the boxer direction in a further assembly step.To ensure separate controllability and electrical isolation, electrical separation of the individual cell stacks or from the module gas flow section in the boxer module can be achieved by simply forming or inserting an electrical insulation layer. Particularly in variants with two or more cell stacks per module area, a metallic distribution plate can be arranged between the respective cell stacks for simplified gas flow. To prevent an electrically conductive connection via the metallic material of the distribution plate, it can be equipped with the described insulation layer on both sides.

[0021] Furthermore, it is advantageous if, in a boxer module according to the invention, the cell stack is laterally designed to allow gas passage, particularly with a passage direction transverse to the boxer direction. Such a design can also be described as an open electrode, in which the fuel section of the cell stack is provided with dedicated inlets and outlets for the process gases on the fuel side. The open electrode design allows free airflow from one air side of the cell stack to the other. This further improves and enhances the advantages of the invention, since no separate or at least minimal effort is required for the fluid-communicating supply and outlet lines for the air sections of the cell stack.The passage direction is, for example, not only perpendicular to the boxer direction, but also perpendicular to the guide direction, so that a three-axis, three-dimensional coordinate system can be spanned from the boxer direction, guide direction and passage direction.

[0022] Also related to the present invention is an electrochemical cell system for generating electrochemical functionality, which comprises at least one boxer module according to the invention. Thus, an electrochemical cell system according to the invention offers the same advantages as have been explained in detail with reference to a boxer module according to the invention. For the purposes of the present invention, electrochemical functionality is, in particular, the generation of electricity through the electrochemical conversion of fuel into fuel gases and / or the production of fuel in the form of fuel gases with the consumption of electricity. By using a boxer module according to the invention, an electrochemical cell system according to the invention offers the same advantages as have been explained in detail with reference to a boxer module according to the invention.It can be advantageous if, in an electrochemical cell system according to the invention, at least two boxer modules are arranged side by side along a row direction, thus forming a module row, wherein the module gas guide sections of the at least two boxer modules of the module row merge into one another, wherein, in particular, the guide direction of the module gas guide sections of the at least two boxer modules is aligned in the same way, preferably coaxially. This embodiment clearly demonstrates a decisive advantage in optimization through a boxer module according to the invention. Due to the row-like alignment along the row direction, the module gas guide sections each continue the module row and, in the case of coaxial alignment, even merge into one another.The common module gas flow section forms the common gas flow not only for all cell stacks within a Boxer module, but also along the module row for all Boxer modules of that module row. Thus, the common module gas flow section can be described as a common, cross-module series gas flow section. The advantages of the invention are thereby scalable along the module row, so that, particularly in flexible setups, electrochemical cell systems of varying sizes and power outputs can be configured and designed very easily. If higher electrical power is required for the electrochemical cell system, the module row is simply lengthened by the corresponding number of Boxer modules, or shortened if lower electrical power is required.

[0023] It can be advantageous if, in an electrochemical cell system according to the invention, at least two boxer modules are arranged side by side, thus forming a module pack, wherein the module gas guide sections of the boxer modules of the module pack are designed separately from one another and, in particular, with parallel or substantially parallel guide directions. This allows for pack scaling as an alternative or additional to the row scaling according to the preceding section. In particular, it is even possible if several module rows are arranged side by side in this module pack configuration, so that double scalability can make the advantages of the boxer module according to the invention even more flexible.

[0024] In particular, it is advantageous if, in an electrochemical cell system according to the invention, at least one common gas channel is arranged between the module rows for supplying the cell stacks of both module rows. This gas channel is distinct from the common module gas guide section and is not part of the respective boxer module. It can be a central channel between two module rows or a decentralized channel outside the respective module row as a collection channel.

[0025] As explained in the preceding paragraph, it can be advantageous if, in an electrochemical cell system according to the invention, a common collection channel for collecting gases from the cell stacks of a module row is arranged in addition to or as an alternative to the common central gas channel. This common collection channel can also be arranged as a central gas channel or as a decentralized collection channel outside the module rows.

[0026] Further advantages can arise if, in an electrochemical cell system according to the invention, the boxer modules are arranged in a common housing. This common housing is particularly gas-tight and results in a further increase in compactness, especially when the cell stacks are designed with an open electrode.

[0027] Further advantages, features, and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The drawings schematically show:

[0028] Fig. 1 shows an embodiment of a boxer module according to the invention,

[0029] Fig. 2 shows another embodiment of a boxer module according to the invention,

[0030] Fig. 3 shows an embodiment of an electrochemical cell system according to the invention,

[0031] Fig. 4 shows a further embodiment of an electrochemical cell system according to the invention and

[0032] Fig. 5 shows a top view of the embodiment of Fig. 4. Fig. 1 schematically shows a boxer module 10 according to the present invention. In this design, the module is configured with a total of four cell stacks 100, each cell stack 100 (not shown in detail) comprising a plurality of individual electrochemical cells arranged in a stack. For operation, the respective cell stacks 100 are separated into a fuel side and an air side in the form of a fuel section and an air section, respectively, which provide the electrochemical functionality via the respective cell membrane. For the sake of clarity, these individual details of the individual electrochemical cells in the cell stacks 100 are not shown here.

[0033] In the illustrated embodiment of the boxer module 10, two cell stacks 100 are provided above and below the two common module gas guide sections 110. In the embodiment of Figure 1, a first subset T1 is formed above the common module gas guide sections 110 in a first module area M1, and a second subset T2 is formed below the two module gas guide sections 110 in the second module area M2, which is separated from the first module area M1 by the module gas guide section 110.

[0034] By separating the system into a first and second module area M1 and M2, the process gases can now be supplied to all cell stacks 100 in a common manner via the module gas guide sections 110. In the embodiment shown in Figure 1, these gases include, for example, the fuel discharge gas KAG and the fuel supply gas KZG.

[0035] The four cell stacks 100 are arranged one above the other along a boxer configuration BR, with the two cell stacks 100 of the first module section M1 positioned opposite and above the two cell stacks 100 of the second module section M2, thus resulting in the previously described boxer configuration relative to the central module gas guide section 110. The guide direction FR is oriented perpendicular to the plane of Figure 1 and therefore transverse to the boxer configuration BR. The cell stacks 100 are designed here in an open electrode configuration for the air side, so that air supply gas LZG can flow from right to left along the passage direction DR through the open cell stacks 100, and the exhaust gas LAG is collected again on the left side.Because the embodiment shown in Figure 1 is a double boxer module 10, meaning that two cell stacks 100 are arranged in each module area, a moderate increase in complexity can be observed. To equip the cell stacks 100 located further away from the module gas guide section 110 with a fluid-communicating connection, feed sections 112 extending laterally to the cell stack 100 closest to the module gas guide section 110 are shown. These form the fluid-communicating connection to the fuel supply section 122 and the fuel discharge section 124 of the respective more distant cell stack 100.

[0036] In Figure 1, electrical insulation layers 140 are arranged between the respective cell stacks 100. These serve to electrically insulate each cell stack 100 from the adjacent cell stack 100 of the same module area M1 or M2, and in particular from a distribution plate (not shown), for example made of metal, between the two cell stacks 100 and / or feed sections 112, also made of metal. For example, the insulation layer 140 is designed as a ring insulator for the feed sections 112. Figure 2 shows an asymmetrical representation with increased compactness and somewhat reduced electrical performance. Here it is clearly evident that the advantages of the invention also become apparent when the two subsets T1 and T2 differ in the number of cell stacks 100.The remaining functionality remains the same as described for Figure 1.

[0037] Not shown in Figures 1 and 2 is a variant with a closed electrode. In this variant, the air supply gas LZG is fed separately to the air supply section 132 via a fluid-communicating line connection, and the air discharge gas LAG is collected from all cell stacks 100 via a common air discharge section 134. This variant is shown in Figure 3.

[0038] Figure 3 shows an electrochemical cell system 200 with several boxer modules 10 according to the invention. A total of six boxer modules 10 are provided, arranged along two module rows 20. Figure 3 shows a front view of a left and a right module row 20. Both module rows are configured with several boxer modules 10 arranged one behind the other, as shown in Figure 1. Here, the air supply gas LZG is fed to each boxer module 10 via air supply sections 132, with air being directed via one air supply section 132 to an upper cell stack 100 and air being directed via another air supply section 132 to a lower cell stack 100 of the boxer module.Another option for supplying air is to guide the air supply gas LZG through a common air supply section 132 for the upper and lower cell stacks 100 of the boxer module 10. This gas is then directed between the two cell stacks 100 of the boxer module and distributed upwards and downwards, respectively. The two cell stacks 100 thus share a common air supply. This air supply variant can also be implemented with an open electrode. The exhaust air gas LAG is then collected inside the housing 230.

[0039] Figures 4 and 5 show an electrochemical cell system 200 with several boxer modules 10 according to the invention. A total of six boxer modules 10 are provided, arranged along two module rows 20. Figure 4 shows a front view of a left and a right module row 20. Both module rows are configured with several boxer modules 10 arranged one behind the other, as shown in Figure 1. Here, too, the boxer modules 10 are equipped with open electrodes. To ensure the supply of the air supply gas LZG, two gas channels 210 with lateral openings are provided centrally within the housing 230. The air supply gas LZG can then flow openly through the electrode sections of the cell stacks 100 of all subsets T1 and T2 and is collected again externally as air discharge gas LAG by common collecting channels 220.On the opposite electrode side of all cell stacks 100, the supply and removal of process gases takes place, as explained with reference to Figure 1. Here it is clearly visible how, by arranging several rows in series, they can each form a module pack 30. This allows for lateral, and thus pack-wise, scaling of the performance of an electrochemical cell system 200 constructed in this way.

[0040] Figure 5 shows a top view of Figure 4. Here, the individual module packs 30 are connected in series, resulting in a left and a right module row 20. Each module row 20 is configured with three boxer modules 10, each with four cell stacks 100, as shown in Figure 3. It is clearly visible how the through-direction DR, the guide direction FR, and the boxer direction BR together form a three-axis, three-dimensional coordinate system.

[0041] The preceding explanation of the embodiments describes the present invention exclusively by way of examples.

[0042] Reference symbol list

[0043] 10 Boxer module

[0044] 20 module series

[0045] 30 module pack

[0046] 100 cell stacks

[0047] 110 Module gas routing section

[0048] 112 Feed section

[0049] 122 Fuel supply section

[0050] 124 Fuel discharge section

[0051] 132 Air supply section

[0052] 134 Air discharge section

[0053] 140 electrical insulation layer

[0054] 200 electrochemical cell system

[0055] 210 common gas channel

[0056] 220 common collection channel

[0057] 230 case

[0058] BR Boxer direction

[0059] FR Direction of travel

[0060] DR Direction of Passage

[0061] RR Row direction

[0062] KZG fuel supply gas

[0063] KAG fuel drain gas

[0064] LZG air supply gas

[0065] LAG air exhaust gas

[0066] M1 first module area

[0067] T1 first subset

[0068] M2 second module area

[0069] T2 second subset

Claims

Patent claims 1. Boxer module (10) for an electrochemical cell system (200), comprising a plurality of cell stacks (100) arranged one above the other along a boxer direction (BR), each having a fuel section with a fuel supply section (122) for supplying fuel supply gas (KZG) and a fuel discharge section (124) for removing fuel exhaust gas (KAG) and an air section with an air supply section (132) for supplying air supply gas (LZG) and an air discharge section (134) for removing air exhaust gas (LAG), characterized in that at least one common module gas guide section (110) with a guide direction (FR) transverse to the boxer direction (BR) is arranged between two cell stacks (100), such that the module gas guide section (110) separates a first module area (M1) with a first subset (T1) of the cell stacks (100) from a second module area (M2) of a second Subset (T2) of the cell stack (100) separates,wherein the module gas guide section (110) is in common fluid-communicating connection with the fuel supply section (122), the fuel discharge section (124), the air supply section (132) or the air discharge section (134) of the cell stacks (110) of both subsets (T1, T2) of the cell stacks (100) along the boxer direction (BR).

2. Boxer module (10) according to claim, characterized in that at least one of the two subsets (T1 , T2) has two or more stacks of cells (100) stacked one above the other along the boxer direction (BR).

3. Boxer module (10) according to one of the preceding claims, characterized in that the number of cell stacks (100) of the two subsets (T1 , T2) is identical.

4. Boxer module (10) according to one of the preceding claims, characterized in that at least a second module gas guide section (110) is arranged with a guide direction (FR) transverse to the boxer direction (BR) for guiding a gas different from the first module gas guide section (110).

5. Boxer module (10) according to claim 4, characterized in that for all gases of the cell stack (100) a specific common module- The gas guidance section (110) is arranged with a guidance direction (FR) transverse to the boxer direction (BR).

6. Boxer module (10) according to one of the preceding claims, characterized in that the at least one module gas guide section (110) has at least one feed section (112) to at least one cell stack (100) along the boxer direction (BR).

7. Boxer module (10) according to claim 6, characterized in that the at least one feed section (112) extends laterally in one of the two module areas (M1 , M2) with a subset (T1 , T2) of more than one cell stack (100) next to a cell stack (100) near the module gas guide section (110) to a cell stack (100) far from the module gas guide section (110).

8. Boxer module (10) according to one of the preceding claims, characterized in that an electrical insulation layer (140) is arranged between two cell stacks (100) of one of the two subsets (T1 , T2) and / or the module gas guide section (110) transversely to the boxer direction (BR) for electrical insulation of the two cell stacks (100) from each other and / or from the module gas guide section (110).

9. Boxer module (10) according to one of the preceding claims, characterized in that the cell stacks (100) are designed laterally for a gas passage, in particular with a passage direction (DR) transverse to the boxer direction (BR).

10. Electrochemical cell system (200) for forming an electrochemical functionality, characterized by at least one boxer module (10) having the features of one of claims 1 to 9.

11. Electrochemical cell system (200) according to claim 10, characterized in that at least two boxer modules (10) are arranged side by side along a row direction (RR) and thus form a module row (20), wherein the module gas guide sections (110) of the at least two boxer modules (10) of the module row (20) merge into one another, wherein in particular the guide direction (FR) of the module gas guide sections (110) which is aligned in the same way, preferably coaxially, with at least two boxer modules (10).

12. Electrochemical cell system (200) according to one of claims 10 or 11, characterized in that at least two boxer modules (10) are arranged side by side and thus form a module pack (30), wherein the module gas guidance sections (110) of the boxer modules (10) of the module pack (30) are designed separately from each other, in particular with parallel or substantially parallel oriented guidance directions (FR).

13. Electrochemical cell system (200) according to claims 11 and 12, characterized in that at least one common gas channel (210) is arranged between the module rows (20) for supplying the cell stacks (100) of both module rows (20).

14. Electrochemical cell system (200) according to claim 13, characterized in that a common collecting channel (220) for collecting gas from the cell stacks (100) of a module row (20) is arranged outside the module rows (20).

15. Electrochemical cell system (200) according to one of claims 10 to 14, characterized in that the boxer modules (10) are arranged in a common housing (230).

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