Device, fuel cell apparatus, flat member, and method and system for manufacturing same

Abstract

The invention relates to an arrangement of a plurality of flat components arranged one on top of the other in an arrangement direction, in particular for a fuel cell system, at least one of the plurality of flat components having at least one adjustment mark, the adjustment mark can be detected, in particular for an optical detection device, even when at least one further flat component is arranged on the flat component marked by the adjustment mark in the arrangement direction.

Description

Technical Field

[0001] The invention relates to devices and fuel cell devices and flat components, as well as methods for producing devices and fuel cell devices and flat components, and systems for producing devices and fuel cell devices and flat components, and the use of devices and flat components, in particular bipolar plates, for fuel cell devices. Summary of the invention

[0002] The object of the present invention is to improve devices and fuel cell arrangements and flat components as well as methods and systems for producing devices and fuel cell arrangements and flat components and the use of devices and flat components.

[0003] In an embodiment of the invention, this object is achieved by a device of a plurality of flat components arranged one above the other in an arrangement direction, in particular a device for a fuel cell device, wherein at least one flat component of the plurality of flat components, i.e. exactly one flat component, or at least some of the flat components each have at least one adjustment mark, and the adjustment mark is detectable, in particular by an optical detection device, even when at least one further flat component is arranged in the arrangement direction onto the flat component marked with the adjustment mark.

[0004] In an embodiment of the invention, the underlying task is achieved by a device of a plurality of flat components arranged one above the other in an arrangement direction, in particular for a fuel cell device, wherein at least one flat component of the plurality of flat components, i.e. exactly one flat component, or at least some of the flat components each have at least one adjustment mark, and the adjustment mark is not obscured by a flat component which is arranged next in the arrangement direction to the flat component marked with the adjustment mark.

[0005] In an embodiment of the present invention, the underlying task is solved in the following manner: a fuel cell device comprises at least one fuel cell unit, and the at least one fuel cell unit has at least one stack (as a device) of a plurality of flat components (as a flat assembly) stacked on each other along a stacking direction (arrangement direction), wherein at least one flat component of the plurality of flat components, i.e. exactly one flat component, has or at least some of the flat components each have at least one adjustment mark, and the adjustment mark can be detected, in particular by an optical detection device, even when at least one other flat component is arranged along the stacking direction onto the flat component marked with the adjustment mark.

[0006] In an embodiment of the present invention, the underlying task is solved in the following manner: a fuel cell device includes at least one fuel cell unit, and the at least one fuel cell unit has at least one stack (as a device) of multiple flat parts (as flat components) stacked on each other along a stacking direction (arrangement direction), wherein at least one flat part of the multiple flat parts, that is, exactly one flat part, has or at least some of the flat parts each have at least one adjustment mark, and the adjustment mark is not obscured by the flat part that is arranged next along the stacking direction on the flat part marked with the adjustment mark.

[0007] In an embodiment of the invention, the underlying task is achieved by a flat component, which in particular includes and / or is a device, wherein the flat component includes a plurality of flat products (as a flat component), and these flat products at least jointly form the flat component, wherein at least one flat product of the plurality of flat products, i.e. exactly one flat product, has or at least some of the flat products each have at least one adjustment mark, and the adjustment mark is detectable, in particular for an optical detection device, even when at least one other flat product is arranged in a vertical direction (arrangement direction) onto the flat product marked with the adjustment mark.

[0008] In an embodiment of the present invention, the underlying task is achieved by a flat component, which in particular includes and / or is a device, wherein the flat component includes a plurality of flat products (as a flat component), and these flat products at least jointly form the flat component, wherein at least one flat product of the plurality of flat products, i.e. exactly one flat product, has or at least some of the flat products each have at least one adjustment mark, and the adjustment mark is not obscured by a flat product that is subsequently arranged in a vertical direction (arrangement direction) on the flat product marked with the adjustment mark.

[0009] The advantage of the solution according to the invention can be seen in particular in that, by means of at least one adjustment mark of a flat component which is recognizable even when a flat component is arranged directly thereon, the position and / or orientation of the flat component marked by means of the at least one adjustment mark can still be recognized even after the flat components stacked thereon have been arranged, and in this way at least one further flat component can be arranged on the flat components already stacked on one another with exact position relative to the marked flat component.

[0010] Advantageously, with the solution according to the invention, when a plurality of flat components are arranged on top of one another to form a stack, it is still possible to react to a possible slipping of at least one flat component marked with at least one adjustment mark, wherein, for example, this slipping could occur when arranging a flat component arranged directly thereon. In particular, a further flat component can be arranged so as to match the sliding position of the marked flat component and / or the position of the sliding marked flat component can be corrected.

[0011] In particular, the positioning accuracy of at least some of the plurality of flat components designed as flat parts, preferably at least a majority of the flat components, for example at least a majority of the bipolar plates, in the stack can be increased, preferably over the entire stacking height of the stack. In particular, the flat parts formed from the flat products as flat components can be manufactured more accurately.

[0012] Since the tolerance chain along the stacked flat modules can be improved in particular, the individual flat components for the stack, in particular functional areas in the flat modules, such as fluid guiding structures in these flat modules, can advantageously be formed with smaller tolerances, ie more precisely.

[0013] In particular, the solution according to the invention is advantageous if at least two flat components that are not arranged directly one above the other, in particular flat products in a flat part and / or flat parts in a stack, can be aligned with respect to one another with a high degree of precision, because they have, for example, structures that correspond to one another and must be aligned exactly with respect to one another.

[0014] It is particularly advantageous that at least one flat component designed as a bipolar plate in the stack is provided with at least one such adjustment mark, since another flat component, in particular designed as a membrane component, is usually arranged on one bipolar plate and another bipolar plate is arranged on the flat component, and the two bipolar plates together form, for example, at least a battery cell of a fuel cell unit and respectively form fluid guiding structures, which must be arranged for precise fluid guidance and for sealing individual parts of these fluid guiding structures and / or for supporting each other in an accurately overlapping manner in the stacking direction, with the at least one further flat component in between.

[0015] Preferably, at least one flat component, i.e. exactly one flat component, or at least some of the flat components respectively have at least one adjustment mark, i.e. exactly one adjustment mark or a plurality of adjustment marks. In some advantageous embodiments, at least some of the adjustment marks have some identical features; and / or in some advantageous embodiments, at least some of the adjustment marks have at least one different feature. For easier reading, in the following, only "adjustment mark / the adjustment mark / at least one adjustment mark" and / or "flat component equipped with an adjustment mark / the flat component equipped with an adjustment mark / at least one flat component equipped with an adjustment mark" are mentioned, and in these expressions and similar expressions, this should be understood as follows: in an advantageous embodiment, the correspondingly explained features are implemented in the variants explained above.

[0016] So far, no information has been provided regarding the design aspects of at least one of the adjustment marks.

[0017] In an advantageous embodiment, it is provided that at least one adjustment marking of at least one flat component is designed not to interact with at least one other flat component, in particular with at least the flat component which is arranged most closely.

[0018] The advantage is in particular that a flat component provided with an adjustment marking designed to be non-interactive does not interact with a flat component subsequently arranged thereon and in particular a flat component arranged therebelow, in particular due to the adjustment marking, and therefore the adjustment of the flat component is at least less impeded by adjacently arranged flat components and / or during adjustment, already arranged flat components are at least less impeded, in particular with regard to their position and / or orientation.

[0019] It is particularly advantageous if the at least one adjustment marking of the at least one flat component at least substantially does not increase and / or at least substantially does not reduce the thickness of the flat component and is therefore preferably designed to be at least substantially thickness-neutral.

[0020] This is particularly advantageous because, since the thickness of the flat component does not at least substantially increase, the at least one adjustment mark does not come into contact with adjacently arranged flat components and interact, so that independent adjustment of these flat components is at least not impeded by the adjustment mark.

[0021] In particular, the respective flat component extends at least substantially in a respective geometric surface plane (in particular a surface extension plane), which extends from two surface directions (in particular a surface extension direction and / or an average extension direction), and the extension of the flat component in a direction running at least almost perpendicularly to the geometric surface plane (in particular a vertical direction) is much smaller than the extension of the flat component in the geometric surface plane, in particular at most one tenth of the extension of the flat component in the geometric surface plane, for example at most one fiftieth of the extension of the flat component in the geometric surface plane.

[0022] It is particularly advantageous if, in a direction of the flat component running perpendicularly to the surface plane (vertical direction), at least one further part of the flat component projects further than the at least one adjustment mark. Advantageously, the flat component provided with the adjustment mark interacts with the most proximately arranged flat component via the at least one further part, for example the two flat components lie on top of each other at the at least one further part and their interaction is independent of the design of the adjustment mark.

[0023] It is particularly advantageous if the at least one adjustment marking of the at least one flat component is designed to be optically detectable and in particular to have a high optical contrast.

[0024] In particular, the adjustment mark can thereby be detected well and easily by an optical detection device and in particular can be detected precisely and / or can be detected well even in the presence of relatively slight disturbances, for example dirt and / or impaired lighting conditions.

[0025] In particular, the adjustment mark can be detected optically if it has a structure that can be distinguished in the spectral range of visible light.

[0026] In particular, the adjustment marking is designed to have a high optical contrast if it has sufficiently sharp transitions between different marking regions with respect to the spectral range of visible light, wherein the different marking regions are recognizable at sufficiently different wavelengths of visible light.

[0027] It is particularly advantageous if at least one adjustment mark of at least one flat component is formed on a part of the flat component which is formed continuously from the material.

[0028] In particular, the section having the adjustment mark thus has no material-free gap.

[0029] Its advantages are particularly that the part formed continuously by material forms a clearly defined background for the adjustment mark, and the marking area of ​​the adjustment mark itself is also formed continuously by material, so that a clearly defined adjustment mark is formed on the clearly defined background, and the clearly defined adjustment mark can be detected by the detection device without interference and more accurately.

[0030] It is particularly advantageous if at least one adjustment mark of at least one flat component, in particular a flat product and / or a flat part, is formed on the outer side of the marked flat component, which faces the flat component arranged / stacked next in the arrangement direction, in particular the stacking direction and / or the vertical direction.

[0031] In particular, at least one adjustment mark of at least one flat component is formed on a surface portion of the marked flat component which faces a flat component arranged / stacked next in the arrangement direction, in particular the stacking direction and / or the vertical direction.

[0032] Advantageously, it is thereby possible that, when further flat components are arranged on top of one another, the at least one adjustment marking is recognizable on the side on which these further flat components are arranged.

[0033] In particular, it is provided that the flat component stacked subsequently on the marked flat component in the arrangement direction, in particular the stacking direction and / or the vertical direction, lies on at least a partial region of the outer side of the marked flat component facing the subsequently stacked flat component.

[0034] Advantageously, at least one adjustment mark of at least one flat component is formed only on a surface area of ​​the flat component marked with the at least one adjustment mark, preferably on an outer side of the flat component marked with the at least one adjustment mark facing a subsequently arranged, in particular stacked, flat component.

[0035] In particular, if the adjustment mark is produced by surface technology, advantageously physically and / or chemically and / or mechanically and / or if the adjustment mark is formed by a structure formed on the surface and / or at the surface and / or protrudes at most close to the surface into the material of the surface component, the adjustment mark is formed at least essentially only on the surface area.

[0036] In a particularly advantageous embodiment, the at least one adjustment marking of the at least one flat component is a weld-in pattern on the at least one flat component.

[0037] In particular, in this way, the pattern of the adjustment marks can advantageously be realized only on the surface area in a simple and high-contrast manner.

[0038] In particular, at least one adjustment mark formed by welding is a weld pattern without a bonded connection.

[0039] In particular, the welding pattern is therefore provided only for forming the adjustment mark, but not for joining together parts of the flat component, so that the welding pattern can be optimized with regard to its position and / or design specifically for its function as an adjustment mark.

[0040] In some advantageous embodiments, the at least one adjustment marking is designed as at least one depression, in particular a notch, on the at least one flat component.

[0041] Advantageously, the adjustment mark is designed precisely.

[0042] Advantageously, at least one adjustment mark, in particular at least some of the adjustment marks, are designed with an offset of less than 0.2 mm, preferably less than 0.1 mm, in particular less than 0.05 mm.

[0043] Preferably, at least one adjustment mark, in particular at least some of the adjustment marks, are designed with a high repetition accuracy, wherein the error in the repeated formation of the adjustment mark is at most 0.1 mm, preferably at most 0.05 mm, in particular at most 0.02 mm.

[0044] Such precisely formed adjustment markings are realized, for example, by welding.

[0045] In particular, at least one adjustment mark comprises a line pattern consisting of a plurality of lines, in particular straight lines, which include parallel lines and / or crossing lines and / or lines arranged at an angle to each other. For example, at least some of these lines form a cross and / or a coordinate system.

[0046] For example, at least one adjustment mark includes an oval or circular mark portion.

[0047] In particular, at least some line and / or oval and / or circular marking portions can advantageously be formed by means of a weld seam.

[0048] It is particularly advantageous if, based on the at least one adjustment marking, the orientation of the flat component provided with the adjustment marking can be detected.

[0049] In some advantageous embodiments, at least one adjustment mark of at least one flat component is formed in a rotationally asymmetrical manner, so that based on the rotationally asymmetrical adjustment mark, the orientation of the marked flat component, in particular the alignment of the marked flat component within the geometric surface plane of the flat component, can be detected.

[0050] In particular, in an advantageous embodiment it is provided that the orientation of at least one flat component, in particular its orientation within its geometric surface plane, can be detected in that the flat component has at least two adjustment markings, in particular distinguishable from one another.

[0051] In one embodiment of the invention, the underlying object is alternatively or additionally achieved in that a geometric connecting line connecting two adjustment markings of the flat component extends through the surface centroid of the flat component.

[0052] Preferably, the center of mass of the surface of the flat component is spaced at least substantially equidistantly from the two adjustment markings connected by the geometric connecting line.

[0053] Advantageously, in this way, by detecting the at least two adjustment marks, it is also possible to detect the position of the center of mass of the surface, at least on the connecting line and advantageously in the middle of the two adjustment marks.

[0054] The object on which the present invention is based is thereby achieved by an arrangement of a plurality of flat components arranged one above the other in an arrangement direction, in particular an arrangement for a fuel cell device, wherein at least one flat component of the plurality of flat components, i.e. exactly one flat component, or at least some of the flat components each have at least two adjustment markings, and a geometric connecting line connecting the two adjustment markings extends through the surface centroid of the flat component.

[0055] Therefore, in an embodiment of the present invention, the underlying task is solved in the following manner: a fuel cell device includes at least one fuel cell unit, and the at least one fuel cell unit has at least one stack (as a device) of a plurality of flat components (as flat components) stacked on each other along a stacking direction (arrangement direction), wherein at least one flat component of the plurality of flat components, that is, exactly one flat component, has or at least some of the flat components each have at least two adjustment marks, and a geometric connecting line connecting the two adjustment marks extends through the surface center of mass of the flat component.

[0056] Therefore, in an embodiment of the present invention, the underlying task is achieved by a flat component, which in particular includes and / or is a device, wherein the flat component includes a plurality of flat products (as a flat component), and these flat products at least jointly form the flat component, wherein at least one flat product of the plurality of flat products, i.e. exactly one flat product, has or at least some of the flat products have at least two adjustment marks respectively, and the geometric connecting line connecting the two adjustment marks extends through the surface centroid of the flat product.

[0057] Advantageously, in these embodiments, at least one feature and / or at least one combination of features, in particular optional features, explained above and / or below, is formed.

[0058] In some advantageous embodiments, at least one adjustment mark, in particular at least one adjustment mark of the at least two adjustment marks, has at least one feature and / or at least one combination of features, which are described in conjunction with the alignment structure.

[0059] Preferably, the at least two adjustment marks are, in particular, easily detectable adjustment marks.

[0060] In some advantageous embodiments, at least one of the at least two adjustment marks can be detected, in particular by an optical detection device, even when at least one other flat component is arranged along the arrangement direction onto the flat component marked with the at least two adjustment marks, and / or at least one of the at least two adjustment marks is not obscured by a flat component that is arranged next along the arrangement direction onto the flat component marked with the at least two adjustment marks.

[0061] In some advantageous embodiments, at least one of the at least two adjustment marks can no longer be detected, in particular by an optical detection device, when at least one additional flat component is arranged on the flat component marked with the at least two adjustment marks, and / or at least one of the at least two adjustment marks is obscured by the subsequently arranged flat component.

[0062] In this embodiment, advantageously, before the next flat component is arranged, the at least two adjustment marks are detected and their positions, and in particular therefore also the position of the surface center of mass of the flat component and, for example, the alignment of the flat component, are stored. The next flat component to be arranged is then adjusted and advantageously arranged precisely using the stored positions.

[0063] In particular, the respective flat component extends in its respective geometric surface extension plane up to the edge.

[0064] In particular, at least one flat component has, advantageously at least some of the flat components each have an edge region which, in particular with respect to the extension of the respective flat component in its geometric surface extension plane, is located at the edge of this extension.

[0065] For example, at least one flat component has in its edge region in its extension within the geometric surface plane, and in particular at least most of the flat components have in their edge region in their extension within the geometric surface plane: an opening or multiple openings for other components of the fuel cell device (for example distributor structures for fluids, in particular for oxidant and / or fuel and / or product medium).

[0066] In particular, at least one flat module has, and preferably at least some of the flat modules of the plurality of flat modules, in particular at least a majority of the flat modules, each have a functional region.

[0067] Advantageously, in the case of a flat component, a functional region of the flat component is surrounded on the circumferential side by the edge region.

[0068] Preferably, at least one adjustment marking of at least one flat component is arranged in the edge region of the marked flat component.

[0069] Advantageously, at least one adjustment marking of at least one flat component is arranged adjacent to an edge of the marked flat component.

[0070] Advantageously, provision is made for at least one adjustment marking of at least one flat component to be formed within a predefined position range.

[0071] Thereby, it is advantageously possible to recognize not only the adjustment mark but also whether the adjustment mark is formed within a predefined position range, so that at least partially normal formation of the flat component can be controlled.

[0072] Preferably, the predefined position range is located in the edge region of the flat component and advantageously adjoins the edge of the flat component.

[0073] It is particularly advantageous if the predefined position range can be detected by an in particular optical detection device.

[0074] For example, the detectable predefined position range has a detectable structure, such as an advantageously specially designed detectable edge contour of the edge, based on which the detection device can detect the detectable position range.

[0075] With regard to other designs of the flat assembly, in particular the design of the flat assembly which is arranged closest to the marked flat assembly, no further details have been given so far.

[0076] In an advantageous embodiment, it is provided that a flat component which is subsequently arranged in the stacking direction, in particular stacked onto at least one flat component marked with at least one adjustment mark, is free of material in the region of the at least one adjustment mark of the marked flat component and in particular in the region of a predefined position range associated therewith.

[0077] In particular, this advantageously enables the adjustment marking of the marked flat component located underneath to be recognizable and in particular visible without the adjustment marking being obscured.

[0078] In particular, here, the area of ​​the adjustment mark and / or the position range at the subsequently arranged flat component should be understood as: the area of ​​the projection of the adjustment mark and / or the position range of the marked flat component on the flat component arranged closest, in particular the projection along the arrangement direction and / or for example the projection on a geometric surface plane of the flat component arranged closest.

[0079] Advantageously, provision is made for a flat component which is subsequently stacked in the arrangement direction onto at least one flat component which is marked with at least one adjustment marking to have a cutout in the region of the at least one adjustment marking.

[0080] For example, the recess is arranged within the extent of the flat module, in particular within the extent plane of a geometric surface of the flat module.

[0081] In a particularly advantageous embodiment, it is provided that, for a flat component which is subsequently arranged in the arrangement direction onto at least one flat component marked with at least one adjustment mark, the at least one adjustment mark and, for example, the area of ​​the position range of the at least one marked flat component associated therewith lies outside the extent of the subsequently arranged flat component, in particular outside the extent of the subsequently arranged flat component in a geometrical surface extent plane of the subsequently arranged flat component.

[0082] In some preferred embodiments, at least one flat component marked with at least one adjustment mark has a protruding portion with the at least one adjustment mark, wherein an especially predefined and advantageously detectable position range is located at least in the protruding portion and / or is formed by the protruding portion.

[0083] For example, the projection protrudes beyond an edge contour averaged over the device, in particular beyond an edge contour averaged over the stack and / or an edge contour of the flat component.

[0084] In some preferred embodiments, the flat component that is subsequently arranged on the at least one flat component marked with the at least one adjustment mark has a recessed edge in the region of the at least one adjustment mark of the marked flat component, wherein in particular the edge is recessed relative to an edge contour of the marked flat component and / or relative to an edge contour averaged over the device.

[0085] In particular, the flat components stacked closest together can have a cutout at their edge or edge region, whereby the adjustment marking and, for example, the associated predefined position range of the marked flat component located underneath can advantageously be detected and / or not obstructed.

[0086] In particular, at least some of the plurality of flat components have different thicknesses, in particular in their respective functional areas and / or, for example, along their respective extensions within their respective geometric surface planes, wherein the respective thickness is measured in corresponding directions (arrangement direction, stacking direction, vertical direction).

[0087] In particular, at least some of the plurality of flat components have in their respective functional areas: structures which cause different thicknesses of the respective flat components; and / or fluid-conducting structures for fluids, in particular for an oxidizing medium and / or a fuel medium and / or a product medium and / or a temperature control medium.

[0088] In particular, at least two flat components of the stack, each designed as a flat part, in particular forming a bipolar plate, at least together form a corresponding battery cell of the fuel cell unit, wherein in particular at least one further flat part is arranged between the two flat parts, and the at least one further flat part is in particular designed as a membrane part.

[0089] In a particularly advantageous embodiment, it is provided that at least some of the plurality of flat components, each comprising functional areas with different thicknesses, are each provided with at least one adjustment marking.

[0090] This is particularly advantageous because the flat components with functional areas of different thicknesses can be at least generally aligned precisely relative to one another, for example so that mutually corresponding parts of different flat components can support one another, and this precise alignment is improved by the adjustment mark.

[0091] In particular, it is provided that at least some of the flat components having the fluid-conducting structure in their respective functional areas are each provided with at least one adjustment marking.

[0092] Advantageously, this achieves the ability to arrange at least one further flat component in a precisely aligned manner on at least some of the flat components having fluid-guiding structures, even if flat components are already arranged between them, and in this way, for example, fluid-guiding structures corresponding to one another are more accurately aligned with one another and / or parts to be sealed off from one another are more accurately located on one another, so that the guidance and distribution of at least one fluid is improved and, for example, the fluid-guiding structures can be formed with smaller tolerances.

[0093] In particular, at least one fuel cell unit has a plurality of cells, wherein, in each cell, electrical energy is provided by chemically converting a fuel medium and an oxidizing medium into a product medium, and in particular each of these cells has a corresponding fluid guiding structure for the oxidizing medium and / or the fuel medium and / or the product medium and / or the temperature control medium.

[0094] In particular, the plurality of battery cells are connected in series in the stack.

[0095] In particular, it is provided that at least two flat parts at least jointly form the respective battery cell, the at least two flat parts in particular each forming an electrode of the respective battery cell.

[0096] Advantageously, provision is made that in at least some of the plurality of cells of the at least one fuel cell unit, at least one of the flat components which together form the respective cell, for example at least one of the flat components which form an electrode, has at least one adjustment marking.

[0097] In particular, it is advantageously achieved thereby that at least one further flat component which together forms the battery cell can be adjusted exactly relative to the flat component having the adjustment marking and thus forms the battery cell exactly.

[0098] In particular, it is provided that at least some of those flat parts, in particular at least a majority of the flat parts, in at least one stack which are designed as bipolar plates have at least one adjustment marking.

[0099] This is particularly advantageous since precise alignment of the bipolar plates relative to one another is particularly important.

[0100] In particular, it is provided that at least most of the battery cells each comprise at least one flat component, which is designed, for example, as a film component and which is subsequently stacked, in particular, onto the flat component marked with the at least one adjustment marking.

[0101] In particular, a further flat component, for example a membrane component in the case of flat parts, is arranged between in each case two flat components which have fluid-conducting structures and / or form electrodes, in particular which together form the respective battery cell.

[0102] In particular, it is provided that: for at least some of the flat parts designed as bipolar plates, preferably at least the majority of the flat parts, a flat part designed in particular as a membrane part is subsequently arranged, and in particular the subsequently arranged flat part is free of material in the area of ​​at least one adjustment mark of the flat part designed as a bipolar plate.

[0103] This is particularly advantageous since the flat parts arranged above and below the flat part, which is designed in particular as a membrane part, can be aligned precisely with respect to one another.

[0104] In one embodiment of the invention, the initially mentioned underlying object is achieved by a method for producing a device and / or a fuel cell arrangement and / or a flat component.

[0105] In an embodiment of the present invention, the method comprises at least the following steps:

[0106] A plurality of flat components are provided; at least one flat component is provided with at least one adjustment mark; at least one further flat component is arranged along an arrangement direction (in particular a stacking direction and / or a vertical direction) onto the flat component provided with at least one adjustment mark, wherein even after the arrangement of the at least one further flat component, the at least one adjustment mark of the at least one flat component provided with at least one adjustment mark is detectable, in particular for an optical detection device, and / or wherein the at least one adjustment mark of the at least one flat component provided with at least one adjustment mark is not obscured by the at least one further flat component, wherein, therefore, in particular even after the arrangement of the at least one further flat component, the at least one adjustment mark is not obscured by the at least one further flat component.

[0107] In particular, the method according to the invention may have the advantage that, based on at least one detectable and / or unobstructed adjustment mark, the alignment, in particular the position and / or orientation of the flat component equipped with the at least one adjustment mark can be identified even after the at least one further flat component has been arranged, and, for example, a sliding movement of the at least one marked flat component can be reacted to; and / or in particular, at least yet another flat component can be adjusted relative to the flat component equipped with the at least one adjustment mark by means of the recognizable adjustment mark and, thereby, can advantageously be arranged precisely relative to the flat component equipped with the at least one adjustment mark, even if at least one further flat component is arranged therebetween.

[0108] The at least one adjustment mark is detectable and / or advantageously is not obscured by a corresponding arrangement of another flat component, in particular relative to the flat component equipped with the at least one adjustment mark and / or by a corresponding formation of the other flat component and / or the at least one adjustment mark on the flat component equipped with the at least one adjustment mark.

[0109] In an advantageous embodiment of the method according to the invention for producing, in particular, a device and / or a fuel cell device and / or a flat component of the type described above, the method comprises at least one step or a plurality of steps for forming a device and / or a fuel cell device and / or a flat component having at least one feature and / or at least one combination of features, in particular optional features, which have been described above and / or below, so that full reference is made to the relevant description in terms of content.

[0110] It is particularly advantageous if the at least one adjustment marking of the at least one flat component is produced by welding, preferably by laser welding.

[0111] In particular, at least one flat module is formed from a plurality of elements.

[0112] For example, at least some of the plurality of elements forming the flat assembly are flat products.

[0113] In particular, at least some of the plurality of elements forming the at least one flat component are joined, in particular welded, to one another.

[0114] In a particularly advantageous embodiment, it is provided that at least some of the plurality of elements forming the at least one flat component, in particular at least some of the flat products, are welded to one another using the same tool, and that the at least one flat component, for example at least one of its plurality of elements, is provided with at least one adjustment marking, in particular by welding.

[0115] In particular, the advantage of joining at least some of the elements and providing at least one adjustment mark with the same tool can be that: thereby, the provision of the adjustment mark at the correct position relative to the joining point is improved, for example can be better reproduced and / or can be achieved more accurately, and / or the precise alignment and arrangement of at least some of the elements relative to each other is only required once for the joining and for providing at least one adjustment mark, and / or the risk of incorrect alignment when changing the tool used for the joining on the one hand and for providing at least one adjustment mark on the other hand is at least reduced.

[0116] Advantageously, when at least some of the elements are joined with the same tool and provided with at least one adjustment mark, tolerances can be improved, for example because an additional tolerance of a further tool in the tolerance chain is omitted.

[0117] In some particularly advantageous embodiments, it is provided that at least some of the elements, in particular at least some of the flat products, are welded to one another by means of the same welding device and are provided with at least one adjustment marking.

[0118] Advantageously, provision is made for at least one further flat module to be arranged on a further flat module.

[0119] Alternatively or additionally, in an embodiment of the invention, the method comprises the steps of: adjusting at least one further flat component relative to at least one flat component provided with at least one adjustment mark by means of at least one detectable and / or unobstructed adjustment mark of the marked flat component, which has been provided with at least one adjustment mark, for example in a previous step; and arranging the at least one further flat component, in particular in an adjusted orientation, in particular along an arrangement direction (in particular a stacking direction and / or a vertical direction), onto the already overlappingly arranged flat components, for example to become part of a stack of arranged flat components, which in particular include using at least one At least one flat component marked with an adjustment mark and in particular comprising at least one further flat component, wherein the at least one further flat component is arranged on the at least one flat component marked with the at least one adjustment mark, in particular is arranged subsequently along an arrangement direction (in particular the stacking direction and / or the vertical direction) on the at least one flat component marked with the at least one adjustment mark, wherein in particular the at least one further flat component has been arranged directly on the at least one marked flat component in a previous step as the most closely stacked flat component, in particular the most closely stacked flat component relative to the arrangement direction (in particular the stacking direction and / or the vertical direction).

[0120] In some preferred embodiments, it is provided that at least one further flat component which is adjusted by means of at least one adjustment mark of a flat component is adjusted so that a functional area of ​​the at least one further flat component to be adjusted is adjusted relative to a functional area of ​​the flat component provided with the at least one adjustment mark, in particular so that at least mutually corresponding partial areas of the respective functional areas are preferably precisely aligned relative to each other.

[0121] In particular, the respective functional area has, in particular in the respective directions of the flat components to be adjusted relative to one another (in particular the arrangement direction and / or the vertical direction and / or the stacking direction): protruding parts, in particular as described above; and / or parts of, for example, fluid guiding structures.

[0122] In a particularly advantageous embodiment, it is provided that, when adjusting the respective functional area, corresponding protrusions, for example corresponding parts of the fluid guiding structure, in the respective functional area are adjusted relative to one another.

[0123] This is particularly advantageous because corresponding parts, which are to be arranged to support one another and / or which must be arranged in a coordinated manner with respect to one another for guiding a fluid, are thus precisely aligned relative to one another, wherein in particular at least one part of another flat component arranged therebetween is arranged between these corresponding parts.

[0124] It is preferably provided that, for adjusting at least one further flat component to be arranged in the stacking direction, at least one adjustment mark of at least one already arranged flat component is detected by at least one, preferably optical, detection device.

[0125] For example, the at least one, preferably optical, detection device is a camera.

[0126] Advantageously, for good detectability of the at least one adjustment mark, the adjustment mark is designed, in particular, with high optical contrast, advantageously as explained above and / or below.

[0127] In an advantageous embodiment, it is provided that at least one adjustment mark is formed within a predefined position range of the flat component to be provided with the at least one adjustment mark.

[0128] In particular, the position range and the formation and / or arrangement of the at least one adjustment marking in the position range are designed as explained above and / or below, so that reference is made in its entirety to these statements with regard to their content.

[0129] It is particularly advantageous if at least one, in particular optical, detection device detects the position range, in particular a detection device which also detects the at least one adjustment mark.

[0130] It is particularly advantageous if the method comprises the step of checking, at least at a flat component in which at least one adjustment mark is detected, in particular optically, whether the at least one adjustment mark is formed in a positionally correct manner within specified tolerance limits within a position range provided and in particular predefined for the at least one adjustment mark.

[0131] Therefore, at least one step is carried out in which at least the normal provision of the at least one adjustment mark is checked and, for example, the normal formation of other features can also be advantageously inferred based on this check, for example when at least some elements of the flat component are joined with the same tool as the one that is provided with the at least one adjustment mark.

[0132] In an embodiment of the invention, the object mentioned at the outset is also achieved by a system for producing a device and / or a fuel cell device and / or a flat component, wherein the device and / or the fuel cell device and / or the flat component has a plurality of flat components arranged one above the other in an arrangement direction.

[0133] In an advantageous embodiment of the system according to the invention, the system is designed to form a device and / or a fuel cell device and / or a flat component having at least one feature and / or at least one combination of features, for example optional, described above and / or below, and the system in particular has at least one tool required for this and / or at least one device required for this.

[0134] In a particularly advantageous embodiment of the system according to the invention, the system is designed to carry out a method having one of the, for example, optional features described above and / or below in conjunction with the method according to the invention or at least one combination of features, and for this purpose the system in particular has at least one required tool and / or at least one required device.

[0135] In a particularly preferred embodiment of the system according to the invention, the system comprises: at least one tool for providing at least one flat component with at least one adjustment mark; and at least one adjustment device, wherein the adjustment device is designed to: with the aid of the at least one adjustment mark, adjust at least one further flat component relative to the flat component provided with the at least one adjustment mark on which at least one further flat component is already arranged.

[0136] In particular, the system can be advantageous in that the at least one further flat component can be arranged preferably precisely relative to the flat component provided with the at least one adjustment mark using the adjustment device, even if at least one further flat component is already arranged on the flat component provided with the at least one adjustment mark.

[0137] It is particularly advantageous if the adjustment device comprises at least one, preferably optical, detection device for detecting the at least one adjustment mark of the at least one flat component.

[0138] For example, the at least one optical detection device is a camera.

[0139] In a particularly preferred embodiment of the system, at least one tool of the system is designed to provide at least one flat component with adjustment markings and to join at least some of the elements which at least jointly form the flat component.

[0140] In an advantageous embodiment, the means for providing the at least one adjustment mark comprises at least one welding device.

[0141] In a particularly advantageous embodiment, it is provided that the system comprises at least one welding device for providing the flat assembly with the at least one adjustment marking and for joining at least some elements of the flat assembly.

[0142] In one embodiment, the object on which the invention is based is achieved by the use of a flat assembly, in particular a flat product, and / or a flat component, such as a bipolar plate.

[0143] In one embodiment of the use according to the invention, the flat module is used for a fuel cell device which has one or at least some of the features explained above and / or below in conjunction with the fuel cell device, for example optional.

[0144] In some advantageous embodiments of the use according to the invention of the flat assembly, the flat assembly is used for a method having one or at least some of the features explained above and / or below in conjunction with the method, for example optional.

[0145] In an advantageous embodiment of the application according to the invention, the flat assembly is used in a system for producing a device and / or a fuel cell device and / or a flat component, in particular for producing a corresponding device and / or a fuel cell device and / or a flat assembly, which has one or at least some of the features described above and / or below in conjunction with the system.

[0146] In particular, in an advantageous application it is provided that at least one flat component is provided with at least one adjustment marking, preferably as explained above and / or below.

[0147] In a preferred application, it is provided that at least one flat component is used to be arranged on an already arranged flat component which is provided with at least one adjustment marking, wherein, in particular by forming and / or arranging the at least one flat component, at least one adjustment marking of the already arranged flat component can still be detected and / or is not obstructed even after the arrangement of the at least one flat component used.

[0148] In some advantageous applications, at least one flat component is used to adjust it relative to a flat component provided with at least one adjustment mark and on which at least one further flat component is already arranged and to arrange it in an adjusted manner on the already arranged flat component.

[0149] Features described above and below as particularly and / or advantageously and / or for example and / or preferably and / or advantageously and / or similarly specified are optional features which, for example, form inventive further developments but are not mandatory for the basic idea of ​​the invention.

[0150] The description of the solution according to the invention includes in particular various combinations of features defined by the following numbered embodiments:

[0151] 1. A device for a fuel cell device (100) comprising a plurality of flat modules (125, 143, 144, 262) arranged one above the other in an arrangement direction (129, 158),

[0152] At least one flat component (125, 143, 144, 262) of the plurality of flat components (125, 143, 144, 262) has at least one adjustment mark (212), and the adjustment mark (212) is detectable, in particular for an optical detection device (222), even when at least one other flat component (125, 143, 144, 262) is arranged along an arrangement direction (129, 158) onto the flat component (125, 143, 144, 262) marked with the adjustment mark (212).

[0153] 2. A device for a fuel cell device (100) comprising a plurality of flat modules (125, 143, 144, 262) arranged one above the other in an arrangement direction (129, 158), in particular a device according to embodiment 1,

[0154] At least one flat component (125, 143, 144, 262) among the plurality of flat components (125, 143, 144, 262) has at least one adjustment mark (212), and the adjustment mark (212) is not blocked by a flat component (125, 143, 144, 262) that is arranged next along an arrangement direction (129, 158) on the flat component (125, 143, 144, 262) marked with the adjustment mark (212).

[0155] 3. A fuel cell device (100) comprising a device according to one of the above embodiments,

[0156] In this case, at least some of the flat components (125, 143, 144, 262) are flat parts (125, 143, 144), and the device is a stack (127) of a plurality of flat parts (125, 143, 144) of fuel cell units (110) stacked on top of each other in a stacking direction (129).

[0157] 4. A flat assembly (125, 143, 144) comprising a device according to embodiment 1 or 2,

[0158] Therein, at least some of the flat components (125, 143, 144, 262) are flat products (262), which together at least form the flat part (125, 143, 144).

[0159] 5. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0160] Therein, at least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is designed not to interact with at least the flat component (125, 143, 144, 262) that is arranged most closely.

[0161] 6. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0162] In which at least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) at least substantially does not increase and / or at least substantially does not reduce the thickness of the flat component (125, 143, 144, 262).

[0163] 7. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0164] In this case, at least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is designed to be optically detectable and, in particular, to have a high optical contrast.

[0165] 8. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0166] Therein, at least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed on a portion of the flat component (125, 143, 144, 262) that is formed continuously from material.

[0167] 9. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0168] At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed on a surface portion (232) of the marked flat component (125, 143, 144, 262), which faces the flat component (125, 143, 144, 262) arranged next along the arrangement direction (129, 158).

[0169] 10. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0170] At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed only on the surface area of ​​the flat component (125, 143, 144, 262) marked with the at least one adjustment mark.

[0171] 11. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0172] Therein, at least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is a weld-in pattern on the at least one flat component (125, 143, 144, 262).

[0173] 12. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0174] At least one adjustment mark (212) formed by welding is a welding pattern without a joint connection.

[0175] 13. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0176] In this case, at least one adjustment mark (212) is designed as at least one depression, in particular a notch, on at least one flat component (125, 143, 144, 262).

[0177] 14. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0178] At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed in a rotationally asymmetrical manner, so that the orientation of the marked flat component (125, 143, 144, 262) can be detected based on the rotationally asymmetrical adjustment mark (212).

[0179] 15. A device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) comprising a plurality of flat components (125, 143, 144, 262), in particular a device and / or a fuel cell device and / or a flat component according to one of the above embodiments,

[0180] At least one flat component (125, 143, 144, 262) has at least two adjustment marks (212), and a geometric connection line (226) connecting the two adjustment marks (212) extends through the surface centroid (228, 308) of the flat component (125, 143, 144, 262).

[0181] 16. A device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) comprising a plurality of flat modules (125, 143, 144, 262), in particular a device and / or a fuel cell device and / or a flat component according to one of the above embodiments,

[0182] The surface centroid (228, 308) of the flat component (125, 143, 144, 262) is spaced at least substantially equally wide from at least two adjustment marks (212).

[0183] 17. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0184] In this case, at least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed within a predefined position range (216) that can be detected, in particular, by an optical detection device.

[0185] 18. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0186] A flat component (125, 143, 144, 262) which is subsequently arranged in the stacking direction (129) onto at least one flat component (125, 143, 144, 262) marked with at least one adjustment mark (212) is free of material in the region of the at least one adjustment mark (212) of the marked flat component (125, 143, 144, 262).

[0187] 19. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0188] In which, for a flat component (125, 143, 144, 262) that is subsequently arranged along the stacking direction (129) onto at least one flat component (125, 143, 144, 262) marked with at least one adjustment mark (212), an area of ​​at least one adjustment mark (212) of at least one marked flat component (125, 143, 144, 262) is located outside the extension range of the subsequently arranged flat component (125, 143, 144, 262).

[0189] 20. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to one of the above embodiments,

[0190] At least some of the plurality of flat components (125, 143, 144, 262) respectively comprise functional areas (172) with different thicknesses and / or fluid guiding structures and are respectively provided with at least one adjustment mark (212).

[0191] 21. The device and / or fuel cell apparatus (100) according to one of the above embodiments,

[0192] In which, at least two flat parts (125, 143, 144) at least jointly form a corresponding battery cell (124) of at least one fuel cell unit (110), and for at least some of the battery cells (124), at least one of the flat parts (125, 143, 144) that jointly form the corresponding battery cell (124) has at least one adjustment mark (212).

[0193] 22. The device and / or fuel cell apparatus (100) according to one of the above embodiments,

[0194] At least some, in particular at least a majority of, of the flat parts (125, 143, 144) in at least one stack (127) designed as bipolar plates (143) have at least one adjustment mark (212).

[0195] 23. A device and / or a fuel cell device (100) and / or a flat component (125, 143, 144), in particular a device and / or a fuel cell device and / or a flat component according to one of the above embodiments,

[0196] In which, the device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) are manufactured using a method that includes one or some of the features of the implementation method proposed below, and / or the device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) are manufactured in a system that includes one or more of the features of the implementation method proposed below.

[0197] 24. A method for producing a device and / or a fuel cell device (100) and / or a flat component (125, 143, 144), wherein the method comprises at least the following steps:

[0198] - providing a plurality of flat components (125, 143, 144, 262);

[0199] - providing at least one flat component (125, 143, 144, 262) with at least one adjustment mark (212);

[0200] - at least one further flat component (125, 143, 144, 262) is arranged along an arrangement direction (129, 158) onto a flat component (125, 143, 144, 262) provided with at least one adjustment mark, wherein even after the arrangement of the at least one further flat component (125, 143, 144, 262), the at least one adjustment mark (212) of the at least one flat component (125, 143, 144, 262) provided with the at least one adjustment mark is detectable, in particular by an optical detection device (222), and / or wherein the at least one adjustment mark (212) is not obscured by the at least one further flat component (125, 143, 144, 262).

[0201] 25. Method for producing a device and / or a fuel cell arrangement (100) and / or a flat component (125, 143, 144), in particular a method according to the preceding embodiment,

[0202] The method comprises one or more steps for forming a device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) having one or some of the features of the embodiments proposed above for the device and / or fuel cell device (100) and / or the flat component (125, 143, 144), and / or wherein the device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) are manufactured at least partially using a system comprising one or more of the features of the embodiments proposed below for the system.

[0203] 26. A method according to one of the above embodiments,

[0204] In this case, at least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed by welding, in particular by laser welding.

[0205] 27. A method according to one of the above-mentioned embodiments,

[0206] In this case, at least some of the multiple elements forming the flat parts (125, 143, 144), in particular at least some flat products (262), are welded to one another using the same tool, and in particular at least one flat part (125, 143, 144) is provided with at least one adjustment mark (212) by welding.

[0207] 28. A method for producing a device and / or a fuel cell device (100) and / or a flat component (125, 143, 144), in particular a method according to one of the above-mentioned embodiments of the method, wherein the method comprises at least the following steps:

[0208] By means of at least one detectable and / or unobstructed adjustment mark (212) of the marked flat component (125, 143, 144, 262), at least one further flat component (125, 143, 144, 262) is adjusted relative to at least one flat component (125, 143, 144, 262) marked with the at least one adjustment mark (212); and

[0209] Arranging the at least one further flat component (125, 143, 144, 262), in particular in an adjusted orientation, onto the already overlapping flat components (125, 143, 144, 262), in particular comprising at least one flat component (125, 143, 144, 262) marked with at least one adjustment mark (212) and in particular comprising at least one further flat component (125, 143, 144, 262),

[0210] Therein, the at least one further flat component (125, 143, 144, 262) is arranged on the at least one flat component (125, 143, 144, 262) which is marked with at least one adjustment mark (212).

[0211] 29. A method according to one of the above-mentioned embodiments,

[0212] The at least one further flat component (125, 143, 144, 262) is adjusted so that a functional area (172) of the at least one further flat component (125, 143, 144, 262) to be adjusted is adjusted relative to a functional area (172) of at least one flat component (125, 143, 144, 262) provided with at least one adjustment mark (212).

[0213] 30. The method according to the previous embodiment,

[0214] When adjusting the corresponding functional area (172), the protruding parts corresponding to each other in the corresponding functional area (172) are adjusted relative to each other.

[0215] 31. A method according to one of the above-mentioned embodiments,

[0216] In order to adjust at least one further flat component (125, 143, 144, 262) to be arranged in the stacking direction (129), at least one adjustment mark (212) of at least one already arranged flat component (125, 143, 144, 262) is detected by at least one optical detection device, in particular a camera.

[0217] 32. A method according to one of the above embodiments of the method,

[0218] The method comprises the step of checking, at least at a flat component (125, 143, 144, 262) in which at least one adjustment mark (212) is detected, in particular optically, whether the at least one adjustment mark (212) is formed in a positionally correct manner within specified tolerance limits within a position range (216) provided for the at least one adjustment mark (212).

[0219] 33. System for producing a device and / or a fuel cell arrangement (100) and / or a flat component (125, 143, 144),

[0220] The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) comprises at least a plurality of flat components (125, 143, 144, 262) arranged in an overlapping manner along an arrangement direction (129, 158).

[0221] The system comprises: at least one tool for providing at least one flat component (125, 143, 144, 262) with at least one adjustment mark (212); and at least one adjustment device,

[0222] The adjustment device is designed to adjust at least one further flat component (125, 143, 144, 262) by means of the at least one adjustment mark (212) relative to a flat component (125, 143, 144, 262) on which at least one further flat component (125, 143, 144, 262) is already arranged and which is equipped with the at least one adjustment mark (212).

[0223] 34. A system for manufacturing a device and / or fuel cell device (100) and / or a flat component (125, 143, 144) having one or at least some of the features of the embodiments proposed above for the device and / or fuel cell device (100) and / or a flat component (125, 143, 144) and / or for manufacturing a device and / or fuel cell device (100) and / or a flat component (125, 143, 144) using a method having one or at least some of the features of the embodiments proposed above for the method, in particular a system according to the previous embodiment.

[0224] 35. A system according to one of the above system implementations,

[0225] Therein, the adjustment device comprises at least one optical detection device for detecting at least one adjustment mark (212) of the at least one flat component (125, 143, 144, 262).

[0226] 36. A system according to any one of the above system implementations,

[0227] In this case, at least one tool of the system, in particular a welding device, is designed to provide at least one flat component (125, 143, 144, 262) with adjustment markings (212) and to join at least some of the elements forming the at least one flat component (125, 143, 144, 262).

[0228] Preferred features and, for example, advantages of the invention are the subject of the subsequent detailed description and of the graphical representations of embodiments in different variants. BRIEF DESCRIPTION OF THE DRAWINGS

[0229] In the attached picture:

[0230] Figure 1 A schematic diagram of an embodiment of a fuel cell device is shown, which includes at least one fuel cell unit having a stack composed of a plurality of flat components;

[0231] Figure 2 A plurality of flat components of the stack are shown to be arranged overlapping;

[0232] Figure 3 A top view of a variation of the flat component is shown;

[0233] Figure 4 An enlarged detail of the flat component in the region of the adjustment mark is shown;

[0234] Figure 5 A stack of a plurality of flat parts arranged one above the other is shown, wherein adjustment markings on a flat part are not obscured by flat parts arranged thereon and are detectable by a detection device;

[0235] Figure 6 shows a top view of a flat component formed from a plurality of flat products, wherein alignment structures formed in the flat products are accessible;

[0236] Figure 7 shows a cross-sectional view of a flat component formed from a plurality of flat products in the region of a functional region provided with a structure;

[0237] Figure 8 A top view of a variation of the flat component is shown;

[0238] Fig. 9 Shown in accordance with Figure 8 An enlarged detail of a flat component in an area with accessible alignment structures and, for example, control structures and alignment parts, for example, adjustment markings;

[0239] Fig.10 A detail of a flat product is shown having an alignment structure accessible through a cutout in another flat product;

[0240] Fig.11 Shows something like Fig.10 Illustration of a variant with a blank portion;

[0241] Fig.12 A partial view of a system having alignment elements for aligning and holding flat products is shown. DETAILED DESCRIPTION

[0242] An embodiment of a fuel cell device, generally designated 100, comprises at least one fuel cell unit 110 and in particular a pipeline system, generally designated 112, which has at least a pipeline arrangement 114 for a fuel medium and a pipeline arrangement 116 for an oxidizing medium, wherein the pipeline arrangements 114, 116 are connected to the at least one fuel cell unit 110 and are partially formed in the fuel cell unit, such as Figure 1 exemplarily and schematically shown in FIG.

[0243] The at least one fuel cell unit 110 comprises a plurality of cells 124 , in which a fuel medium and an oxidizing medium are at least partially chemically converted into a product medium and in particular electrical energy is provided in the process.

[0244] In particular, the battery cells 124 are connected in series.

[0245] The battery cells 124 are formed from flat parts 125 , and the flat parts 125 are arranged one above the other in a stack 127 in a stacking direction 129 .

[0246] By means of a pipeline device 114 for the fuel medium, the fuel medium can be transported to the anode side of the fuel cell unit 110 and the corresponding anode side of each battery cell 124, in particular as a component of the anode fluid mixture, and an anode residual fluid mixture can be discharged from these battery cells 124 and from the at least one fuel cell unit 110. The anode residual fluid mixture in particular includes a portion of the fuel medium and / or a portion of the product medium and / or a component of the transported anode fluid mixture that is transported to the at least one fuel cell unit 110 but does not undergo chemical conversion in the fuel cell unit.

[0247] By means of a pipeline device 116 for an oxidizing medium, an oxidizing medium can be transported to the cathode side of at least one fuel cell unit 110 and the corresponding cathode side of each battery unit 124, in particular as a component of a cathode fluid mixture, and a cathode residual fluid mixture can be discharged from these battery units 124 and from the at least one fuel cell unit 110, the cathode residual fluid mixture in particular including a portion of the oxidizing medium and / or a portion of the product medium and / or a component of the transported cathode fluid mixture which was transported to the at least one fuel cell unit 110 but did not undergo chemical conversion in the fuel cell unit.

[0248] For example, a temperature control device 132 is also provided in order to keep the at least one fuel cell unit 110 within a temperature range permitted for its normal operation.

[0249] Preferably, the temperature control device 132 is designed to cool the at least one fuel cell unit 110 as required and / or to heat the at least one fuel cell unit 110 as required, in particular depending on the operating state of the fuel cell system.

[0250] In particular, the temperature control device 132 includes a pipeline device 134 for a temperature control medium, as part of the pipeline system 112, for conveying the temperature control medium to the fuel cell unit 110 and to the individual battery cells 124 and for discharging the temperature control medium from the individual battery cells 124 and the at least one fuel cell unit 110, wherein the temperature control medium maintains heat exchange contact with the fuel cell unit 110, in particular with the individual battery cells 124, and advantageously with multiple flat parts 125 after the conveyance and before the discharge.

[0251] In particular, the plurality of flat components 125 includes flat components designed as bipolar plates 143 and in particular at least some flat components designed as membrane components 144 .

[0252] In particular, Figure 2 As shown in the exploded view, a flat component designed as a membrane component 144 is arranged between two flat components designed as bipolar plates 143, for example, between two bipolar plates 143I and 143II, so that these flat components together at least jointly form the corresponding battery cell 124.

[0253] In particular, mutually adjacent flat parts 125 , for example a respective bipolar plate 143 and a respective membrane part 144 , are connected to one another firmly, preferably at least partially in a fluid-tight manner.

[0254] Advantageously, a seal is formed at least between adjacent flat parts 125 , in particular between a respective bipolar plate 143 and a respective membrane part 144 , which seal is, for example, molded on and / or has a sealing tape and / or is applied by screen printing.

[0255] In particular, the two bipolar plates 143 each form at least one reaction chamber, in which the membrane of the membrane component 144 arranged between the two bipolar plates 143 advantageously extends, wherein the supplied oxidizing medium and the fuel medium chemically react in the reaction chamber and provide electrical energy in the chemical reaction.

[0256] Advantageously, the bipolar plate 143 is designed as an anode or cathode of a single battery cell 124 .

[0257] In particular, the fuel medium is delivered to the portion of the reaction chamber bounded by the membrane of the membrane member 144 and by one of the two bipolar plates 143, and the oxidizing medium is delivered to the portion of the reaction chamber bounded by the membrane of the membrane member 144 and the other of the two bipolar plates 143. The fuel medium and the oxidizing medium interact via the membrane, in particular, charged particles pass through the membrane from one portion of the reaction chamber to another portion of the reaction chamber, and oppositely charged particles pass through the circuit from one portion of the reaction chamber to another portion of the reaction chamber.

[0258] In particular, the flat part 125 extends in area in each case along two surface extent directions 154 and 156 which extend at least substantially perpendicularly to one another and which extend to form corresponding geometric surface extent planes.

[0259] Typically, the respective surface extent planes of a plurality of flat parts 125 in the stack 127 in the state of being stacked one on top of the other run at least substantially parallel to one another and at least substantially perpendicular to the stacking direction 129 .

[0260] In particular, the extension of the corresponding flat part 125 along the perpendicular direction 158 running essentially perpendicular to the surface extension directions 154 and 156 is significantly smaller than the extension of the flat part 125 along its surface extension directions 154, 156, in particular at most one tenth thereof, for example at most one hundredth thereof, wherein, in particular, the height extension direction 158 of the flat parts 125 in the stacked state in the stack 127 runs at least essentially parallel to the stacking direction 129.

[0261] The flat element 125 has respective outer sides 165 and 167 which are opposite in the vertical direction 158 thereof and which extend in area in the directions of surface extension 154 and 156 .

[0262] For example, outer sides 165 , 167 have different height structures in vertical direction 158 , as will be explained in greater detail below.

[0263] In particular, the flat parts 125 stacked directly on top of one another in the stack 127 lie at least partially on one another on the outer sides 165 , 167 facing one another.

[0264] In particular, for some flat components which are advantageously designed as bipolar plates 143 , one of their outer sides 165 , 167 is respectively assigned to one of two battery cells 124 arranged adjacent to one another.

[0265] For example, a number of flat parts 125 , in particular designed as film parts 144 , are arranged in the respective battery cell 124 .

[0266] At least some of the multiple flat parts 125, preferably at least most of the flat parts, have corresponding functional areas 172, in which functional structural components are particularly arranged, wherein one of the functional structural components or multiple functional structural components in the corresponding functional area 172 is used to realize at least one function of the corresponding flat part 125.

[0267] For example, a flat part designed as a membrane part 144 has at least one membrane in its functional region 172 , in particular for dividing at least one reaction chamber.

[0268] Advantageously, the flat component 125 designed as a bipolar plate 143 has, in particular, highly profiled fluid-conducting structures, which, as functional structural components, are designed, for example, at least partially as channel structures. In particular, at least some of the fluid-conducting structures at least partially form reaction chambers. In particular, at least some of the fluid-conducting structures at least partially form pipeline sections for fluids.

[0269] In particular, at least some of these fluid guiding structures are part of the pipeline arrangement 114 for the fuel medium and / or the pipeline arrangement 116 for the oxidizing medium. In particular, some of these pipeline sections are designed for conveying an anode fluid mixture or a cathode fluid mixture to at least one reaction chamber, and some of these pipeline sections are designed for removing an anode residual fluid mixture or a cathode residual fluid mixture from at least one reaction chamber.

[0270] For example, at least some of these fluid-conducting structures are part of the line arrangement 134 and conduct a temperature-control medium, in particular in order to provide a heat-exchange contact in the region of the functional area 172 .

[0271] Advantageously, the fluid guiding structures pass through at least a large part of the functional area 172 of the flat part 125 , and, for example, at least some of the fluid guiding structures 174 have a branching structure.

[0272] In particular, these fluid guiding structures have a complex design and are not shown in the drawings, for example in Figure 3 In the figure, it is only shown schematically and simplified.

[0273] In particular, some flat components, in particular flat components designed as bipolar plates 143, have electrical functional structural components in their corresponding functional areas 172, in particular for forming electrodes, that is, in particular depending on the side of the bipolar plate, for forming an anode or a cathode, and / or for electrical connection with the electrodes of adjacent battery cells 124.

[0274] The flat parts 125 , 143 , 144 have an edge 182 , up to which the respective flat part 125 , 143 , 144 extends in its respective surface extension plane, and wherein the edge runs closed on the circumferential side.

[0275] Furthermore, the flat parts 125 , 143 , 144 have a respective edge region 184 which extends inwardly from the edge 182 and wherein the edge region 184 advantageously surrounds the functional region 172 in a closed manner on the circumferential side.

[0276] In particular, in the edge region 184, such as Figure 2 and Figure 3 As exemplarily shown in FIG. 1 , a plurality of openings 186 are formed for passing other components.

[0277] For example, at least four, advantageously six, openings 186I to 186VI are formed, in which corresponding distributor structures for supplying and discharging the corresponding media are arranged as part of pipeline arrangements 114, 116 for the fuel medium and the oxidizing medium and a pipeline arrangement 134, for example a temperature control device, wherein the distributor structure is generally also referred to as a manifold.

[0278] In particular, at least two adjacent flat parts 125 are in each case firmly connected to one another in their edge regions 184 , in particular welded.

[0279] Preferably, at least one weld seam 198 , in particular consisting of a plurality of parts, runs in the edge region 184 , via which weld seam at least two mutually adjacent flat parts 125 , 143 , 144 are connected firmly and, for example, fluid-tightly.

[0280] In particular, parts of the weld seam 198 are designed such that at least a partial course of the weld seam surrounds the functional region 172 in a closed manner on the circumferential side.

[0281] Preferably, some parts of the weld 198 are designed so that: the openings 186, for example, openings 186I, 186III, 186IV and 186VI, are respectively surrounded by corresponding parts of the weld 198 and are closed on the circumferential side, and at least some openings 186 are separated from the edge 182, other openings 186 and the functional area 172 by corresponding parts of the weld 198.

[0282] Advantageously, for at least some of the flat components 125, here in particular for flat components designed as bipolar plates 143, the pipeline portions are particularly designed to have so-called gas ports, which extend between an area which is partially enclosed and closed by the weld seam 198 and has an opening 186 in which a distributor structure for the medium is arranged, and the functional area 172, so as to connect the area and the functional area in a defined manner in a fluid-conducting manner and enable the corresponding medium to be transported or discharged.

[0283] In particular, at least some of the plurality of flat parts 125, advantageously at least some of the flat parts 125 designed as bipolar plates 143, in particular at least most of the flat parts, have an adjustment mark 212 or a plurality of adjustment marks 212, such as adjustment marks 212I, 212II, 212III, 212IV, as shown in Figure 3 and Figure 4 As shown in the example.

[0284] In particular, multiple adjustment marks 212 are designed to be substantially identical, and references to "adjustment marks" should be understood as references to at least one adjustment mark, preferably at least some of the multiple adjustment marks 212, for example, at least most of the adjustment marks, and Roman numerals representing special adjustment marks are added to the figure mark only when a specific adjustment mark is to be specified.

[0285] In particular, the adjustment marking 212 is provided for adjusting the marked flat parts 125 when the flat parts 125 are arranged one above the other in the stacking direction 129 to form a stack 127 during assembly of the fuel cell system 100 .

[0286] Advantageously, the adjustment mark 212 is a mark with high optical contrast for good detection using optical detection equipment.

[0287] In particular, the adjustment mark 212 is designed to be at least substantially thickness-neutral, ie the thickness of the marked flat component 125 along its vertical direction 158 is at least substantially not influenced by the adjustment mark 212 .

[0288] Advantageously, the adjustment mark is formed on a portion which is formed continuously from the material in a flat manner and in particular is formed on the portion only close to the surface, for example is formed on the surface of the portion and / or is formed at the surface of the portion and / or is formed to have at most a slight penetration depth from the surface into the material of the portion.

[0289] It is particularly advantageous if the adjustment mark 212 is a pattern welded in, for example, by laser welding.

[0290] In particular, the weld-in pattern of the adjustment mark 212 is provided only for marking and does not form a joining connection between different parts.

[0291] In some variants, at least one adjustment mark is designed as a recess in the flat part.

[0292] Preferably, the adjustment mark 212 is formed within a predefined position range 216, such as Figure 4 As shown in the example.

[0293] Preferably, the adjustment mark 212 is formed in the edge region 184 , wherein preferably, the position range 216 is adjacent to the edge 182 .

[0294] This adjustment mark 212 or multiple adjustment marks 212 can take various designs that are conducive to detection. In particular, multiple adjustment marks 212 are different in their design, i.e., for example, their shape and / or their pattern, so that these adjustment marks can be distinguished for detection equipment.

[0295] For example, at least one adjustment mark 212 comprises a line pattern and / or a cross and / or a circular structure. In an advantageous variant, at least one adjustment mark 212 is designed to be rotationally asymmetrical, so that the position of the adjustment mark within the geometric surface extension plane of the marked flat part 125 and the orientation of the adjustment mark can be identified and detected.

[0296] For a plurality of provided adjustment marks 212, at least some of these adjustment marks 212 are arranged away from one another with respect to the geometric surface extension plane of the marked flat part 125, such as in Figure 3 The adjustment markings 212I and 212II on the one hand and the adjustment markings 212III and 212IV arranged remotely therefrom are shown by way of example in FIG.

[0297] For example, the functional area 172 is arranged between two adjustment markings 212 that are spaced apart from one another, and / or the adjustment markings 212 that are spaced apart from one another are formed on different, for example opposite, parts of the edge region 184 .

[0298] For example, the adjustment marks 212 that are separated from each other are formed in diagonally opposite corner regions of the edge region 184 .

[0299] Preferably, at least two adjustment marks 212 in one flat part 262 are arranged such that: a connecting line 226 connecting the at least two adjustment marks 212 extends through the surface centroid 228 of the flat parts 125, 143, 144, such as Figure 3 As shown in the example.

[0300] Advantageously, the surface centroid 228 of the flat parts 125 , 143 , 144 is spaced at least substantially equidistantly from the at least two adjustment markings 212 .

[0301] For example, the at least two adjustment marks 212 are arranged diagonally opposite to each other and / or away from each other.

[0302] The adjustment mark 212 is preferably formed on the outside, in particular on a surface portion 232 of the marked flat part 125, which faces the flat part 125 arranged next in the stack 127 in the stacking direction 129, such as Figure 5 1 and 2. In FIG. 1 , the flat part 125a marked and the flat part 125b subsequently stacked thereon are shown by way of example.

[0303] In particular, the flat component subsequently stacked onto the marked flat component is designed as a membrane component 144 , wherein the marked flat component is designed in particular as a bipolar plate 143 .

[0304] Advantageously, the flat part which is subsequently stacked onto the marked flat part is designed to be free of material in the region which is located above the adjustment mark 212 in the stacking direction 129 .

[0305] In particular, the flat part 125 subsequently stacked onto the marked flat part 125 is designed in such a way that no material is present in the region of the projection of the adjustment mark 212 of the marked flat part 125 onto the geometric plane of extent of the subsequently stacked flat part 125 .

[0306] In some advantageous variants, the flat part 125 stacked next to it has a cutout 242 in the region above the adjustment mark 212 , so that the adjustment mark 212 is not obscured and can be detected optically.

[0307] For example, in some variants, the recess 242 is formed in the flat part 125 in such a way that a material portion surrounds the recess on the circumferential side.

[0308] In an advantageous variant, the cutout 242 is designed as a recess in the edge region 184, such as Figure 5 In particular, here the edge 182 of the flat part is recessed in the region of the recess 242 designed as a notch relative to the outer contour of the stack 127 so that the adjustment mark 212 is not obscured.

[0309] For example, the cutout 242 defines a predefined position range 216 for adjusting the marking 212 and / or at least does not obstruct the position range 216 due to the cutout.

[0310] In some advantageous variants, the flat part 125 marked with the adjustment mark 212 has a marking section 246 protruding beyond the outer contour of the stack 127, which is provided with the adjustment mark 212 and in which the predefined position range 216 is located, such as Figure 4 and Figure 5 As shown in the example.

[0311] For example, the marking portion 246 projects a few millimeters beyond the outer contour of the stack 127 .

[0312] In particular, in this way, for the recess 242 designed as a notch and / or for the protruding marking portion 246, the projection of the adjustment mark 212 and, for example, the position range 216 associated therewith onto the geometric extension plane of the subsequently stacked flat part 125 is located within this geometric extension plane outside the extension range of the most closely stacked flat part 125 up to its edge 182.

[0313] In particular, at least some of the flat components 125, advantageously at least the majority of the flat components 125 designed as bipolar plates 143, are essentially formed from at least two, in particular metallic, flat products 262, such as Figure 6 2 shows by way of example a variant with two flat products 262I and 262II, wherein in this variant at least one further flat product also forms the corresponding flat part 125 .

[0314] In particular, the flat product 262 of the flat component 125 forms a layer of the flat component.

[0315] The flat products 262 of the flat part 125 are arranged one above the other along a vertical direction 158 running essentially perpendicularly to the geometric surface extension plane of the flat part 125 .

[0316] Insofar as the flat products 262 of the flat parts 125 are designed at least substantially identically with regard to their basic function and / or design, they are described together below with reference to the “flat product 262 ”.

[0317] For example, the flat product 262 is a sheet.

[0318] The flat product 262 has two opposing flat sides 264 and 266 that are spaced apart from each other by a thickness 168, such as Figure 7 As shown in the example.

[0319] In the case of a flat component 125 consisting of a plurality of flat products 262, the respective outer flat sides 264, 266 of the two outer flat products 262 form the outer sides 165, 167 over the area of ​​the flat component 125, and the inner flat sides 264, 266 face the flat sides 264, 266 of the other flat product 262, so that, for example, the outer flat side 264I of the flat product 262I forms the outer side 165 and the flat side 266II of the flat product 262II forms the outer side 167, and the inner flat sides 266I and 264II of the flat products 262I and 262II are arranged opposite to one another, as Figure 7 As shown in the example.

[0320] In particular, in the case of a flat component designed as a bipolar plate 143 , a corresponding flat product 262 , which forms one of the outer sides 165 , 167 of the flat component, forms an electrode for an associated battery cell 124 .

[0321] In particular, the flat product 262 has a thickness 268 which is significantly smaller than an extension dimension of the flat product 262 in extension directions 286 and 288 which run at least substantially perpendicular to each other and at least locally at least substantially perpendicular to the thickness direction of the measured thickness 168, in particular at most one tenth thereof, for example at most one hundredth thereof.

[0322] In particular, structures are formed in the flat product 262 which lead to locally different heights of the flat part 125 .

[0323] Advantageously, in the functional region 172 of the flat component, which is designed in particular as a bipolar plate 143 , at least some of the structures forming the flat product form at least some of the flow-conducting structures of the flat component.

[0324] Since a structure protruding from the surface extension plane, such as a fluid guiding structure, is preferably formed in the flat product 262, the extension directions 286 and 288 of the flat product 262 do not necessarily run at least substantially parallel to the surface extension plane locally, but, for example, the average extension directions 286 and 288 over the extension of the flat part 125 along the surface extension directions 154 and 156 run at least approximately parallel to the surface extension plane.

[0325] Due to structures extending from the surface extension plane, such as fluid guiding structures, the extension of the flat part 125 in the vertical direction 158 is greater than the sum of the thicknesses 268 of the flat products 262 forming the flat part 125, such as Figure 7 As shown in the example.

[0326] In some advantageous variants, a flat component 125 formed by a plurality of flat products 262, for example, at least one flat product 262 of a flat component designed as a bipolar plate 143 and / or designed as a membrane component 144, for example, each of at least some of the flat products 262, has at least one adjustment mark 212' for adjusting the flat products 262 when they are arranged on each other in a vertical direction 158.

[0327] Here, advantageously, at least one flat product 262 and advantageously at least one adjustment mark 212' of at least some of the flat products 262, advantageously at least some of the adjustment marks 212', have at least one feature and advantageously at least one combination of features described above and / or below in conjunction with the adjustment mark 212 of the flat parts 125, 143, 144.

[0328] It is particularly advantageous if at least two adjustment marks 212 ′ on a flat product 262 are arranged diagonally opposite one another and / or spaced apart from one another, so that the alignment of the flat product 262 can also be determined when detecting the at least two adjustment marks 212 ′.

[0329] Preferably, at least two adjustment marks 212' on one flat product 262 are arranged such that: a connecting line 226' connecting the at least two adjustment marks 212' extends through the surface centroid 308 of the flat product 262, such as Figure 8 As shown in the example.

[0330] Advantageously, the surface centroid 308 of the flat product 262 is at least substantially equidistantly spaced from the at least two adjustment marks 212 ′.

[0331] Advantageously, in this variant, the flat products 262 are adapted and arranged on one another and in particular joined together in a manner corresponding to that explained in conjunction with the plurality of flat parts 125 , 143 , 144 .

[0332] In order to avoid repetitions, therefore, reference is made in its entirety to the above statements with regard to this variant, in particular with regard to the advantageous designs with regard to the at least one adjustment marking 212 ′ and the adjustment and arrangement.

[0333] For variants, illustratively, in Figure 6 , Figure 8 and Fig. 9 2 shows an adjustment mark 212' on a flat product 262. For example, the adjustment mark 212' is designed as a notch as described later in conjunction with the alignment structure 312. For example, the adjustment mark 212' is designed as described above in conjunction with the flat component. Thereby, at least Figure 6 , Figure 8 , Fig. 9 These different variations of adjustment markings 212 ′ at the flat product 262 are also represented.

[0334] Preferably, a flat component 125 formed by a plurality of flat products 262, for example, at least one flat product 262 of a flat component designed as a bipolar plate 143, preferably each flat product 262, has at least one alignment structure 312, which is accessible and / or releasable by the flat product or other flat products among the plurality of flat products 262 of the flat component 125, at least in an overlapping arrangement state for forming the flat component 125.

[0335] exist Figure 6 and Figure 8 FIG. 2 shows an example of a top view of a flat component 125 having an alignment structure 312 in its flat product 262, and in combination with FIG. Figures 9 to 11 The exemplary illustrations in exemplify variations of the design of the alignment structure 312 .

[0336] For example, for a flat part 125 formed by flat products 262I and 262II, each of these flat products 262I, 262II has an alignment structure 312I or 312II or preferably has multiple, for example two, alignment structures 312I or 312II, wherein these alignment structures 312I, 312II are designed to be at least substantially identical, and / or different features can be replaced, as long as it is not explicitly explained otherwise below, so that multiple alignment structures 312I, 312II are explained together below and only refer to the alignment structure 312.

[0337] The alignment structure 312 is designed such that an alignment element 314 of a system for producing a fuel cell device, in particular for producing a flat component 125, can act on the alignment structure 312 in particular mechanically in order to align and preferably hold the flat product 262, for example Fig.12 as shown in .

[0338] Preferably, the alignment structure 312 is designed as a notch 316 extending between the two flat sides 264 and 266 of the flat product 262, which is continuous in the vertical direction 158. Figures 9 to 11 As shown in the example.

[0339] For example, the recess 316 on at least one alignment structure 312 is designed at least substantially as a round hole and / or an elongated hole, wherein in this embodiment the alignment structures 312 of the flat product 262 preferably differ.

[0340] In particular, the plurality of alignment structures of the flat product 262 are designed such that the position, in particular the position and / or the orientation of the flat product 262 is not overdetermined when the alignment elements 314 act on the alignment structures 312 .

[0341] For example, the flat product has oblong holes and round holes as alignment structures.

[0342] In particular, the alignment structure 312 is designed to have no interaction with another flat product 262 of the flat part 125 or with multiple other flat products 262 of the flat part, so that the alignment structure 312 therefore has no interaction with any other flat product 262 of the flat part 125, in particular at least when aligning the flat product 262 equipped with the alignment structure 312.

[0343] In particular, the alignment structure 312 is accessible and can be released along a release direction 322 , which advantageously corresponds at least substantially to the vertical direction 158 of the flat part 125 .

[0344] In particular, the further flat product 262 or further flat product 262 of the flat component 125 is designed to be free of material at least in the projection of the alignment structure 312 and preferably additionally also in the projection of the tolerance range 326 surrounding the alignment structure 312 .

[0345] Tolerance range 326 surrounds alignment structure 312 , preferably surrounds it closed on the circumferential side.

[0346] In particular, the tolerance range 326 already runs in a direction at least substantially perpendicular to the release direction 322, i.e. in particular at least substantially parallel to the geometric extension plane, starting from the alignment structure 312 and away from the alignment structure is an extension 328, which corresponds to at least one tolerance that is permitted when aligning the flat product 262 equipped with the alignment structure 312 relative to at least one other flat product 262 of the flat part 125, in particular relative to all flat products 262.

[0347] In particular, one of the flat products 262 or a plurality of further flat products 262 of the flat part 125 has a recess 332 in the release direction 322 above or below the alignment structure 312 , through which the alignment structure 312 is accessible in the release direction 322 and can be released.

[0348] In some variants, the cutout 332 is a cutout within the extension of the further flat product 262 and is surrounded on the circumferential side by the material of the flat product 262, such as in Fig.10Two recessed portions 332 are shown as an example.

[0349] In some variants, the cutout 332 is a cutout at the edge of the flat product 262, which is designed, for example, as a notch. Here, the flat product 262 equipped with the cutout 332 does not extend in the region of the cutout 332, as does the flat product 262 with the corresponding alignment structure 312, for example, not to the edge 182 of the flat part 125. More precisely, the edge of the flat product 262 with such a cutout 332 is recessed behind the alignment structure 312 and preferably behind the tolerance range 326 in the region of the cutout 332. This is Fig.11 3 , a recess 332 ′ is shown by way of example, wherein the further recess 332 shown is surrounded on the circumference by material of the corresponding flat product 262 .

[0350] In particular, a channel 334 is thus formed in the region of the alignment structure 312 , which channel 334 extends through the flat part 125 in the release direction 322 and is open on each of the two outer sides 165 , 167 .

[0351] Here, in the area of ​​a flat product equipped with an alignment structure 312, which is particularly designed as a notch 316, the channel 334 has its minimum extension in the flat product 262 equipped with the alignment structure 312 at least substantially perpendicularly to the release direction 322, and is designed to be wider in the area of ​​another flat product 262 or multiple other flat products 262 at least substantially perpendicularly to the release direction 322 and is particularly equipped with an extension range that is at least as large as or larger than the extension range of the alignment structure 312 plus the permissible tolerance, so that the alignment structure 312 and the tolerance range 162 surrounding the alignment structure are particularly accessible and releaseable on both sides.

[0352] Preferably, at least one flat product 262, for example all flat products 262, of the flat part 125 has at least two alignment structures 312 arranged remotely from one another, wherein in particular the functional area 172 is located spatially between these remote alignment structures 312, in particular with respect to the surface extension directions 154, 156. In particular, the at least two alignment structures 312 arranged remotely from one another are remotely from one another by a distance which corresponds at least to the minimum extension of the flat part 125 in its surface extension plane.

[0353] Preferably, at least one alignment structure 312 in at least two flat products 262, for example one alignment structure 312 in each of a plurality of flat products 262 of a flat part 125, are close to one another with respect to their distance in a direction running essentially parallel to the geometric surface extension plane, in particular, these alignment structures are located in a locally defined alignment portion 336 of the flat part 125.

[0354] For example, the extension of the corresponding alignment portion 336 in the geometrical surface extension plane is at most ten times greater than the extension of the corresponding alignment structure 312, for example at most five times greater.

[0355] In particular, in a corresponding alignment portion 336 in at least one of the flat products 262, and in particular in each of the plurality of flat products 262, an alignment structure 312 and a corresponding recess 332 for the alignment structure 312 in another flat product 262 or for the alignment structure 312 in a plurality of other flat products 262 are formed respectively.

[0356] For example, at least two alignment portions 336 are arranged remotely from each other, wherein, for example, the functional area 172 is arranged between these remotely arranged alignment portions 312 and / or these remotely arranged alignment portions 336 are remotely from each other at a distance which corresponds at least to a minimum extension of the flat part 125 within the geometric surface extension plane.

[0357] Preferably, at least one alignment structure 312 , in particular at least some alignment structures 312 , for example all alignment structures, are arranged in the edge region 184 of the flat part 125 .

[0358] In particular, at least one alignment portion 336 , in particular at least some alignment portions 336 , for example all alignment portions, are arranged in the edge region 184 .

[0359] It is particularly advantageous if at least the flat product 262 provided with the alignment structure 312 and at least one further flat product 262 have a corresponding control pattern 352 , according to which a correct positioning of the at least two flat products 262 relative to one another can advantageously be controlled.

[0360] For example, the control pattern 352 is a pattern formed in the corresponding flat product 262 .

[0361] In particular, the control pattern 352 is a recess formed in the respective flat product 262 , which recesses are advantageously arranged, for example concentrically, overlapping in the vertical direction 158 in the aligned state.

[0362] exist Fig. 9In the figure, two control patterns 352 designed as essentially circular holes of two flat products 262 of a flat part 125 are shown by way of example, wherein, in the correctly aligned state, the two circular holes overlap at least essentially concentrically and thus the correct alignment of the two flat products relative to each other can be identified.

[0363] In particular, a method for producing a fuel cell device, in particular for producing a stack of flat components formed from flat products, has at least one or more of the steps explained below.

[0364] In particular, at least two flat products 262 are provided for producing a flat component 125 , in particular forming a bipolar plate 143 .

[0365] Preferably, at least some of the flat products 262 are provided with at least one alignment structure 312 .

[0366] In particular, at least some of the flat products 262 are provided with at least one alignment structure 312 by at least one punching process, in particular at least partially by shearing.

[0367] This shearing is advantageous because it allows the alignment structure 312 to be formed precisely.

[0368] Here, it is particularly provided that the alignment structure 312, in particular the notch 316 of the alignment structure, is formed largely, but for example not completely, by shearing, and that in a next step, the material to be removed is finally and completely separated, whereby a nose is formed in the formed structure at the alignment structure 312, in particular the notch 316, for example a round hole and / or an elongated hole, for example by stamping, by final separation.

[0369] Preferably, in a manufacturing step, at least some structures in the functional area 172, in particular the fluid guiding structures, are at least partially formed in at least one flat product 262, and at the same time, preferably by the same tool, at least one alignment structure 312 is at least partially formed. In particular, the tool is a punching tool, which embosses the structures in the functional area 172 and at least partially punches out the alignment structure 312, for example partially forming the alignment structure by shearing.

[0370] In another flat product 262 or a plurality of further flat products 262 , for example, a recess 332 for releasing an alignment structure 312 in at least one flat product 262 is formed by a simple and advantageous but imprecise separation process, for example by punching, since no precision is required for such a space without material.

[0371] For example, control pattern 352 is formed in at least some of flat products 262 .

[0372] Preferably, the control pattern 352 is at least largely formed using a precision process, for example by shearing, and in particular in a next step the material is finally separated, for example by punching, whereby, for example, a nose is formed in the control pattern.

[0373] Advantageously, the further flat product 262 or the plurality of further flat products 262 are designed to be free of material in the area of ​​the alignment structure 312 and preferably of a tolerance range 326 surrounding the alignment structure 312, so that the flat product 262 provided with the alignment structure 312 can be aligned independently of the further flat product 262 or these further flat products 262, because: in particular, the alignment element 314, which is adapted to the alignment structure 312 in terms of its dimensions, has no effect on the further flat product or these further flat products.

[0374] In particular, corresponding to the alignment structure 314 in the at least one flat product 262 , a recess 332 , 332 ′ is formed in the at least one other flat product 262 , for example by punching.

[0375] Next, the corresponding alignment element 314 of the system for manufacturing flat components of fuel cell devices acts on the corresponding alignment structure 312 of the flat product 262 and aligns the flat product 262, and preferably, the alignment element 314 keeps the flat product 262 in the aligned position until the flat products 262 are assembled together to form a flat component 125.

[0376] In particular, at least one alignment element 314 is provided at a machine station for assembling and manufacturing the flat part 125, wherein, advantageously, at least one corresponding alignment element 314 is provided at the machine station in order to align at least a majority of the flat products 262, for example all the flat products 262, and preferably for retaining at least a majority of the flat products, for example all the flat products.

[0377] exist Fig.12 In the figure, a variant is exemplarily shown in which alignment elements 314I and 314III are provided and designed to align and hold the flat product 262I, and alignment elements 314II and 314IV are provided and designed to align and hold the flat product 262II.

[0378] Here, at least one alignment element 314 provided and designed for aligning a corresponding flat product 262 is designed to: in particular, cooperate precisely with the alignment structure 312 of the flat product 262 to be aligned, in particular mechanically, for alignment, and in this case at least essentially without interaction with the other flat product 262 or these other flat products 262 of the flat part 125 to be manufactured, at least when the flat product 262 or these non-aligned flat products 262 are at least roughly correctly arranged above or below the flat product 262 to be aligned in the vertical direction 158 for assembly of the flat part 125, wherein the flat product is at least roughly correctly arranged when the rough alignment of the flat product 262 already corresponds to a correct alignment, but there may still be deviations in the alignment that exceed the permissible tolerance range, for example deviations that exceed ten times the tolerance range.

[0379] In particular, the alignment elements 314 are designed as rigid alignment elements 314. For example, the alignment elements 314 are pins extending in the longitudinal direction, wherein the longitudinal direction of the pins is oriented at least substantially parallel to the vertical direction 158 of the flat part 125 to be produced.

[0380] Advantageously, the alignment element 314 , which is designed, for example, as a pin, extends from the abutment 424 to the element end 428 , wherein preferably the respective alignment element 314 is designed to taper in the region of its element end 428 towards its element end 428 .

[0381] Advantageously, in particular the rigid alignment elements 314 are arranged rigidly relative to one another in an arrangement that matches one another exactly, so that a flat product 262 interacting with the alignment element 314 provided therefor is properly aligned by this interaction.

[0382] In the method, a station having a plurality of alignment elements 314 is loaded with a plurality of flat products 262 , wherein at least some, in particular at least most, of the flat products 262 respectively engage with at least one alignment element 314 with their respective at least one alignment structure 312 and are thereby aligned.

[0383] In particular, a corresponding alignment element 314, in particular designed as a pin, passes through a corresponding alignment structure 312, which is designed as a notch 316, wherein the other flat product 262 or these other flat products 262 are designed to be free of material at least in the area of ​​the alignment element 314 and in particular additionally in the area of ​​a tolerance range 326 which correspondingly surrounds the alignment element 314, so that they do not interact with the alignment element 314 and can be aligned independently of the alignment element.

[0384] Advantageously, the corresponding alignment element 314 passes through the channel 334 formed by the plurality of flat products 262 and interacts only with the flat product 262 to be aligned, since the channel 334 has its minimum extension transversely to the vertical direction 158 and / or its narrowest area in the region of the flat product 262 to be aligned, and the alignment element 314 has a thickness transversely to its longitudinal extension which in particular corresponds exactly to this extension of the channel 334 in the region of the alignment structure 312 of the flat product to be aligned.

[0385] Preferably, the thickness of the alignment element 312 is at least substantially constant along its longitudinal extension, possibly except in the region at the element ends 428 thereof.

[0386] Advantageously, the tapering in the region of the element end 428 simplifies the threading of the flat product 262 to be aligned onto the alignment element 314 .

[0387] Advantageously, the flat products 262 which are properly and in particular precisely aligned with one another are put together, in particular welded together, wherein the flat products 262 are advantageously also put together and held in an aligned position by at least one corresponding alignment element 314 during the putting together.

[0388] In particular, in the method, a stack 127 of flat components 125 , in particular of bipolar plates 143 and membrane components 144 , is produced by providing these flat components 125 and stacking them on one another and preferably joining them.

[0389] In this case, in particular at least one flat part 125 , preferably at least a majority of the bipolar plates 143 , is each provided with at least one adjustment marking 212 , preferably within a respective predefined position range 216 .

[0390] At least the flat part, in particular the membrane part 144 (which is subsequently stacked directly onto a flat part equipped with at least one adjustment mark 212), is designed to be free of material in the area of ​​the at least one adjustment mark 212, so that the adjustment mark 212 can still be detected and / or is not obscured, at least when the two flat parts 125 are roughly aligned with each other.

[0391] For example, for this purpose, a cutout 332 is formed in the flat part 125 which is stacked closest to it, or the adjustment mark 212 is formed on a protruding part.

[0392] The flat part arranged closest to the surface, for example the flat part 125 b, is placed and assembled onto the flat part 125, for example the flat part 125 a, which is provided with the adjustment mark 212, wherein, due to the design and arrangement of the flat parts 125, the adjustment mark 212 is not obstructed and can still be detected, in particular, by an optical detection device 222, such as Figure 5 As shown in the example.

[0393] Even if at least one other flat part 125, for example flat part 125b, is arranged on the marked flat part 125, when yet another other flat part 125, for example flat part 125c, is arranged, the at least one adjustment mark 212 of the flat part 125 marked with the at least one adjustment mark, for example flat part 125a, can still be recognized.

[0394] Advantageously, at least one detectable adjustment mark 212 is detected by, for example, an optical detection device 222, and the actual position of the flat part 125 marked with the adjustment mark 212, here for example, flat part 125a, is detected in this way, and yet another flat part 125, here for example, flat part 125c, is adjusted relative to the identifiable adjustment mark 212 and thereby relative to the actual position of the flat part 125 marked with the adjustment mark 212, here for example, flat part 125a, and in this adjusted state, the yet another flat part is stacked on the flat part 125, here for example, stacked on the flat part 125b already arranged on the marked flat part 125.

[0395] Thereby, the marked flat parts 125 , for example flat part 125a , and yet another flat part 125 , for example flat part 125c , are preferably arranged exactly aligned with one another in the stack 127 , even though at least one further flat part 125 , for example flat part 125b , is arranged between them.

[0396] In particular, for a flat component 125 formed from a plurality of flat products 262 , the plurality of flat products 262 are joined in the same machine station and provided with at least one adjustment mark 212 , for example both preferably by welding with the same welding device.

[0397] For example, in particular the optical detection device 222 also detects the predefined position range 216 and detects whether the adjustment mark 212 is located within the predefined position range, so that another control step of normal production of the flat part 125 is performed therethrough.

[0398] For example, in this case, in particular optical detection device 222 detects position range 216 with regard to its position relative to edge 182 and / or with regard to the contour of edge 182 .

[0399] Reference numerals list

[0400] 100 Fuel cell equipment

[0401] 110 Fuel Cell

[0402] 112 Pipeline system

[0403] 114 Pipeline equipment for fuel media

[0404] 116 Pipeline equipment for oxidizing media

[0405] 124 battery cells

[0406] 125 Flat parts (flat components)

[0407] 127 Heap

[0408] 129 Stacking direction (layout direction)

[0409] 132 Temperature Control Device

[0410] 134 Pipeline installation of temperature control device

[0411] 143 Bipolar Plate

[0412] 144 membrane parts

[0413] 154 Surface extension direction

[0414] 156 Surface extension direction

[0415] 158 vertical direction (layout direction)

[0416] 165 outside

[0417] 167 Outside

[0418] 172 Functional Area

[0419] 182 Edge

[0420] 184 Marginal Area

[0421] 186 Opening

[0422] 198 Weld

[0423] 212 Adjustment Mark

[0424] 216 Position Range

[0425] 222 Testing Equipment

[0426] 226 Connection line

[0427] 228 Surface centroid of a flat part

[0428] 232 Surface part

[0429] 242 blank space

[0430] 246 Marking section

[0431] 262 Flat products (flat components)

[0432] 264 Flat Side

[0433] 266 Flat Side

[0434] 268 Thickness

[0435] 286 Extension direction

[0436] 288 Extension direction

[0437] 308 Surface centroid of flat products

[0438] 312 Alignment Structure

[0439] 314 Alignment element

[0440] 316 Gap

[0441] 322 Release direction

[0442] 326 Tolerance range

[0443] 328 Extension of tolerance range

[0444] 332 Blank

[0445] 334 channels

[0446] 336 Alignment section

[0447] 352 Control Pattern

[0448] 424 Support

[0449] 428 Component end

Claims

1. A device for a fuel cell device (100) comprising a plurality of flat modules (125, 143, 144, 262) arranged one above the other in an arrangement direction (129, 158), in, At least one flat component (125, 143, 144, 262) of the plurality of flat components (125, 143, 144, 262) has at least one adjustment mark (212), and the adjustment mark (212) is detectable by, in particular, an optical detection device (222) even when at least one other flat component (125, 143, 144, 262) is arranged along an arrangement direction (129, 158) onto the flat component (125, 143, 144, 262) marked with the adjustment mark (212).

2. A device for a fuel cell device (100) having a plurality of flat modules (125, 143, 144, 262) arranged one above the other in an arrangement direction (129, 158), in particular a device according to claim 1, in, At least one flat component (125, 143, 144, 262) among the plurality of flat components (125, 143, 144, 262) has at least one adjustment mark (212), and the adjustment mark (212) is not blocked by a flat component (125, 143, 144, 262) that is arranged next in an arrangement direction (129, 158) to the flat component (125, 143, 144, 262) marked with the adjustment mark (212).

3. A fuel cell device (100) comprising a device according to any one of the preceding claims, It is characterized in that At least some of the flat assemblies (125, 143, 144, 262) are flat components (125, 143, 144), and the device is a stack (127) of a plurality of flat components (125, 143, 144) of fuel cell units (110) stacked on top of one another in a stacking direction (129).

4. A flat part (125, 143, 144) comprising a device according to claim 1 or 2, It is characterized in that At least some of the flat components (125, 143, 144, 262) are flat products (262) which together at least form the flat part (125, 143, 144).

5. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is designed not to interact with at least the flat component (125, 143, 144, 262) that is arranged most closely.

6. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) at least substantially does not increase and / or at least substantially does not reduce the thickness of the flat component (125, 143, 144, 262).

7. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is designed to be optically detectable and, in particular, to have a high optical contrast.

8. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed on a portion of the flat component (125, 143, 144, 262) that is formed continuously from material.

9. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed on a surface portion (232) of the marked flat component (125, 143, 144, 262), which faces the flat component (125, 143, 144, 262) arranged next along the arrangement direction (129, 158).

10. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed only on the surface area of ​​the flat component (125, 143, 144, 262) marked with the at least one adjustment mark.

11. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is a weld-in pattern at the at least one flat component (125, 143, 144, 262).

12. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) formed by welding is a weld pattern without a bonded connection.

13. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) is designed as at least one depression, in particular a notch, on at least one flat component (125, 143, 144, 262).

14. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed in a rotationally asymmetrical manner, so that the orientation of the marked flat component (125, 143, 144, 262) can be detected based on the rotationally asymmetrical adjustment mark (212).

15. A device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) comprising a plurality of flat modules (125, 143, 144, 262), in particular a device and / or a fuel cell device and / or a flat component according to any of the preceding claims, It is characterized in that At least one flat component (125, 143, 144, 262) has at least two adjustment marks (212), and a geometric connection line (226) connecting the two adjustment marks (212) extends through the surface centroid (228, 308) of the flat component (125, 143, 144, 262).

16. A device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) comprising a plurality of flat modules (125, 143, 144, 262), in particular a device and / or a fuel cell device and / or a flat component according to any of the preceding claims, It is characterized in that The surface centroid (228, 308) of the flat component (125, 143, 144, 262) is spaced at least substantially equally from at least two adjustment marks (212).

17. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed within a predefined position range (216) that can be detected, in particular, by an optical detection device.

18. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that A flat component (125, 143, 144, 262) which is subsequently arranged in the stacking direction (129) onto at least one flat component (125, 143, 144, 262) marked with at least one adjustment mark (212) is free of material in the region of the at least one adjustment mark (212) of the marked flat component (125, 143, 144, 262).

19. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that For a flat component (125, 143, 144, 262) that is subsequently arranged in a stacking direction (129) onto at least one flat component (125, 143, 144, 262) that is marked with at least one adjustment mark (212), the area of ​​at least one adjustment mark (212) of at least one marked flat component (125, 143, 144, 262) is located outside the extension range of the subsequently arranged flat component (125, 143, 144, 262).

20. The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) according to any one of the preceding claims, It is characterized in that At least some of the plurality of flat components (125, 143, 144, 262) each comprise a functional area (172) with different thicknesses and / or fluid guiding structures and are each provided with at least one adjustment mark (212).

21. The device and / or fuel cell apparatus (100) according to any one of the preceding claims, It is characterized in that At least two flat parts (125, 143, 144) respectively jointly form at least a corresponding battery cell (124) of at least one fuel cell unit (110), and for at least some of the battery cells (124), at least one of the flat parts (125, 143, 144) jointly forming the corresponding battery cell (124) has at least one adjustment mark (212).

22. The device and / or fuel cell apparatus (100) according to any one of the preceding claims, It is characterized in that At least some, in particular at least a majority of, of the flat parts (125, 143, 144) in at least one stack (127) designed as bipolar plates (143) have at least one adjustment mark (212).

23. A device and / or a fuel cell device (100) and / or a flat component (125, 143, 144), in particular a device and / or a fuel cell device and / or a flat component according to any of the preceding claims, It is characterized in that The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) are manufactured using a method comprising one or some of the features of the claims presented below for the method, and / or the device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) are manufactured in a system comprising one or more of the features of the claims presented below for the system.

24. Method for producing a device and / or a fuel cell arrangement (100) and / or a flat component (125, 143, 144), wherein: The method comprises at least the following steps: - providing a plurality of flat components (125, 143, 144, 262); - providing at least one flat component (125, 143, 144, 262) with at least one adjustment mark (212); - at least one further flat component (125, 143, 144, 262) is arranged along an arrangement direction (129, 158) onto a flat component (125, 143, 144, 262) provided with at least one adjustment mark, wherein even after the arrangement of the at least one further flat component (125, 143, 144, 262), the at least one adjustment mark (212) of the at least one flat component (125, 143, 144, 262) provided with the at least one adjustment mark is detectable, in particular by an optical detection device (222), and / or wherein the at least one adjustment mark (212) is not obscured by the at least one further flat component (125, 143, 144, 262).

25. Method for producing a device and / or a fuel cell arrangement (100) and / or a flat component (125, 143, 144), in particular according to the method of the preceding claim, in, The method comprises one or more steps for forming a device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) having one or some of the features of the above-mentioned claims for the device and / or the fuel cell device (100) and / or the flat component (125, 143, 144), and / or wherein: The device and / or the fuel cell arrangement (100) and / or the flat component (125, 143, 144) is at least partially produced using a system comprising one or more of the features of the claims presented below for the system.

26. A method according to any one of the preceding method claims, It is characterized in that At least one adjustment mark (212) of at least one flat component (125, 143, 144, 262) is formed by welding, in particular by laser welding.

27. A method according to any one of the preceding method claims, It is characterized in that At least some of the multiple elements forming the flat parts (125, 143, 144), in particular at least some flat products (262), are welded to one another using the same tool, and in particular at least one flat part (125, 143, 144) is provided with at least one adjustment mark (212) by welding.

28. A method for producing a device and / or a fuel cell system (100) and / or a flat component (125, 143, 144), in particular a method according to any of the above method claims, wherein: The method comprises at least the following steps: By means of at least one detectable and / or unobstructed adjustment mark (212) of the marked flat component (125, 143, 144, 262), at least one further flat component (125, 143, 144, 262) is adjusted relative to at least one flat component (125, 143, 144, 262) marked with the at least one adjustment mark (212); and Arranging the at least one further flat component (125, 143, 144, 262), in particular in an adjusted orientation, onto the already overlapping flat components (125, 143, 144, 262), in particular comprising at least one flat component (125, 143, 144, 262) marked with at least one adjustment mark (212) and in particular comprising at least one further flat component (125, 143, 144, 262), Therein, the at least one further flat component (125, 143, 144, 262) is arranged on the at least one flat component (125, 143, 144, 262) which is marked with at least one adjustment mark (212).

29. A method according to any one of the preceding method claims, It is characterized in that The at least one further flat component (125, 143, 144, 262) is adjusted so that a functional area (172) of the at least one further flat component (125, 143, 144, 262) to be adjusted is adjusted relative to a functional area (172) of at least one flat component (125, 143, 144, 262) provided with at least one adjustment mark (212).

30. The method according to the preceding claim, It is characterized in that When the corresponding functional area (172) is adjusted, the protruding portions corresponding to each other in the corresponding functional area (172) are adjusted relative to each other.

31. A method according to any one of the preceding method claims, It is characterized in that In order to adjust at least one further flat component (125, 143, 144, 262) to be arranged in the stacking direction (129), at least one adjustment mark (212) of at least one already arranged flat component (125, 143, 144, 262) is detected by at least one optical detection device, in particular a camera.

32. A method according to any one of the preceding method claims, It is characterized in that The method comprises the step of checking, at least at a flat component (125, 143, 144, 262) in which at least one adjustment mark (212) is detected, in particular optically, whether the at least one adjustment mark (212) is formed in a positionally correct manner within specified tolerance limits within a position range (216) provided for the at least one adjustment mark (212).

33. System for producing a device and / or a fuel cell device (100) and / or a flat component (125, 143, 144), wherein: The device and / or the fuel cell device (100) and / or the flat component (125, 143, 144) comprises at least a plurality of flat components (125, 143, 144, 262) arranged one above the other in an arrangement direction (129, 158). The system comprises: at least one tool for providing at least one flat component (125, 143, 144, 262) with at least one adjustment mark (212); and at least one adjustment device, The adjustment device is designed to adjust at least one further flat component (125, 143, 144, 262) by means of the at least one adjustment mark (212) relative to a flat component (125, 143, 144, 262) on which at least one further flat component (125, 143, 144, 262) is already arranged and which is equipped with the at least one adjustment mark (212).

34. A system for manufacturing a device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) having one or at least some of the features of the claims presented above for the device and / or fuel cell device (100) and / or a flat component (125, 143, 144) and / or for manufacturing a device and / or a fuel cell device (100) and / or a flat component (125, 143, 144) using a method having one or at least some of the features of the claims presented above for the method, in particular a system according to the preceding claim.

35. A system according to any one of the preceding claims directed to a system, It is characterized in that The adjustment device comprises at least one optical detection device for detecting at least one adjustment mark (212) of the at least one flat component (125, 143, 144, 262).

36. A system according to any one of the preceding claims directed to a system, It is characterized in that At least one tool of the system, in particular a welding device, is designed to provide at least one flat component (125, 143, 144, 262) with adjustment markings (212) and to join at least some of the elements forming the at least one flat component (125, 143, 144, 262).

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