Assembly system for assembling a fuel cell stack

Abstract

Assembly system (10) for assembling a fuel cell stack (1) comprising alternately stacked fuel cell components including membrane electrode assemblies (2) and bipolar plates (3), the assembly system (10) comprising: a conveying device (20) for conveying the membrane electrode arrangements (2) and bipolar plates (3) in alternating sequence in a conveying direction (F); a slide (30) arranged at one conveying end (21) of the conveying device (20); a height-adjustable stacking holder (40) arranged in the conveying direction (F) after the chute (30) for the alternating receiving and stacking of the membrane electrode assemblies (2) and bipolar plates (3) and a gas supply device (50) for generating a gas cushion (51) below the fuel cell components (2, 3) in the area of ​​a conveying end (31) of the chute (30) and / or on a top side (32) of the chute (30).

Description

[0001] The invention relates to an assembly system for assembling a fuel cell stack composed of alternately stacked membrane electrode assemblies and bipolar plates (hereinafter also referred to as fuel cell components). In particular, the invention relates to an assembly system for the alternating stacking (layering) of fuel cell components to form a fuel cell stack.

[0002] Fuel cells use the chemical conversion of a fuel with oxygen to form water to generate electrical energy. For this purpose, fuel cells contain the membrane electrode assembly (MEA) as their core component. This assembly consists of an ion-conducting (usually proton-conducting) membrane and a catalytic electrode (anode and cathode) arranged on either side of the membrane. Gas diffusion layers (GDL) can also be arranged on either side of the membrane electrode assembly, on the sides of the electrodes facing away from the membrane. Typically, the fuel cell is formed by a plurality of MEAs arranged in a stack, whose electrical outputs add up.Bipolar plates (also called flow field or separator plates) are typically arranged between the individual membrane-electrode assemblies. These plates ensure the supply of the operating media, i.e., the reactants, to the individual cells and typically also serve for cooling. The bipolar plates also ensure electrically conductive contact with the membrane-electrode assemblies.

[0003] During operation of the fuel cell, the fuel (anode operating medium), in particular hydrogen H2 or a hydrogen-containing gas mixture, is fed to the anode via an anode-side open flow field of the bipolar plate, where an electrochemical oxidation of H2 to protons H + with the release of electrons (H2 → 2 H + + 2 e -). The electrolyte or membrane, which separates the reaction chambers from each other in a gas-tight manner and electrically insulates them, transports the protons (water-bound or water-free) from the anode chamber to the cathode chamber. The electrons provided at the anode are conducted to the cathode via an electrical line. Oxygen or an oxygen-containing gas mixture (e.g., air) is supplied to the cathode as the operating medium via a cathode-side open flow field of the bipolar plate, so that a reduction of O2 to O 2- takes place with absorption of electrons (½ O2 + 2 e - → O 2- ). At the same time, the oxygen anions in the cathode compartment react with the protons transported across the membrane to form water (O 2- + 2 H + → H2O).

[0004] The fuel cell stack is supplied with its operating media—the anode operating gas (e.g., hydrogen), the cathode operating gas (e.g., air), and the coolant—via main supply channels that extend throughout the stack and from which the operating media are fed to the individual cells via the bipolar plates. At least two such main supply channels are provided for each operating medium, one for the supply and one for the discharge of the respective operating medium. The main supply channels are formed by corresponding supply openings that are provided congruently in the membrane electrode assemblies and bipolar plates and are aligned with each other within the stack.

[0005] Stacking the membrane electrode assemblies and bipolar plates to produce the fuel cell stack is slow, expensive, and inefficient. In particular, the two fuel cell components must be aligned with high precision to ensure that the supply openings provided in the components, as well as the active areas, are precisely aligned. To stack the components, the membrane electrode assemblies and bipolar plates are typically picked up, lifted, and placed by appropriate handling devices such as robots or gantries. The cycle times for this process are relatively long, and the investment required for such a stacking system is very high.

[0006] The invention is therefore based on the object of creating an assembly system which enables the alternating stacking of fuel cell components with a high degree of automation, short cycle times and low investment costs.

[0007] This object is achieved entirely or at least in part by an assembly system having the features of the present claim 1. Preferred embodiments of the invention emerge from the features mentioned in the subclaims.

[0008] The assembly system according to the invention comprises a conveyor device for conveying the membrane electrode assemblies and bipolar plates in alternating sequence in a conveying direction; a chute arranged at a conveying end of the conveyor device; a height-adjustable stacking holder arranged downstream of the chute in the conveyor device for alternately receiving and stacking the membrane electrode assemblies and bipolar plates; and a gas supply device for generating a gas cushion beneath the fuel cell components in the region of a conveying end of the chute and / or on an upper side of the chute.

[0009] The gas cushion generated by the gas supply device, which can preferably be an air cushion, enables low-friction, sliding transport of the fuel cell components from the conveyor device via the chute to the stacking support. Thus, the membrane electrode assemblies and bipolar plates alternately slide over the gas cushion onto the stacking support, where the two components are alternately stacked on top of one another. Costly robots or the like for lifting and depositing these components are thus not required in the assembly system according to the invention. At the same time, depositing the fuel cell components via the gas cushion has proven to be extremely gentle on them. In particular, the membrane electrode assembly, which usually has very low flexural rigidity, can be transported and stacked via the gas cushion with minimal mechanical stress and without damage.

[0010] In an advantageous embodiment of the invention, the gas supply device comprises a slot-shaped nozzle arranged below the chute with an outlet aligned in the conveying direction. The slot-shaped nozzle creates a gas cushion at and behind the conveying end of the chute. In this way, the fuel cell components glide in a suspended manner over the end edge of the chute into the stack receptacle.

[0011] According to a further preferred embodiment, the chute has a perforated plate, for example, a perforated sheet, wherein the gas supply device supplies the gas through the perforation such that the gas cushion is formed above the perforated plate. The advantage of this embodiment is that a gas cushion is formed between the chute and the fuel cell component over virtually the entire chute, allowing the components to slide over the chute with minimal frictional resistance.

[0012] According to a further preferred embodiment, the chute has a gas outlet slot running transversely to the conveying direction, wherein the gas supply device supplies the gas through the gas outlet slot in such a way that the gas cushion is formed on the chute.

[0013] In this design, too, a gas cushion is formed between the fuel cell component and the slide practically over the entire slide surface, so that the transport of the fuel cell components takes place with minimal frictional resistance.

[0014] In yet another embodiment of the invention, the chute is formed from a plurality of at least two, in particular at least three, conveyor belts arranged parallel in the conveying direction. In this embodiment, the supplied gas thus penetrates between the lateral gaps of the conveyor belts to the underside of the fuel cell component and carries it. Furthermore, the conveyor belts themselves can be driven to further assist the conveyance of the fuel cell components.

[0015] According to a preferred embodiment of the invention, the stack holder has a base that is tilted at an angle relative to the horizontal. This arrangement ensures that the fuel cell components align themselves independently in the stack holder due to their gravity. The angle of inclination is in particular 2 to 15°, preferably 5 to 10°, relative to the horizontal. In particular, the direction of inclination is selected such that the lowest point or the lowest side of the base of the stack holder is at the rear in the conveying direction.

[0016] In a preferred embodiment of the invention, the stack holder has at least two stop elements which support the fuel cell components on at least two of their sides, preferably on two sides of the fuel cell components arranged at right angles to one another. In a particularly preferred embodiment, three stop elements are provided on two sides of the stack holder, with two stop elements supporting the fuel cell components on one long side and one stop element on the short side. The stop elements support a defined position and thus exact alignment of the fuel cell components sliding into the stack holder. If the stack holder is inclined, one of the sides supported by the stop elements is the lowest side.

[0017] According to a further development of the invention, the assembly system further comprises at least one alignment unit, which bears with an adjustable force against a side of the fuel cell component that is opposite the side supported by a stop element. This further increases the precision of the alignment of the components. Preferably, at least two, particularly preferably three alignment units are provided, which are arranged on two sides of the stack holder, with two alignment units acting on the fuel cell components on a long side and one alignment unit acting on the short side of the component. In an advantageous embodiment, one stop element and one alignment unit are located opposite one another with respect to a mirror symmetry plane of the fuel cell component.The alignment unit can, in particular, be spring-mounted in such a way that it rests against the corresponding side of the fuel cell component via the spring force. Furthermore, the alignment unit can be arranged so that it can be moved over an adjustable stroke with respect to a distance from the corresponding side of the fuel cell component.

[0018] According to an advantageous embodiment, the assembly system has a vibration function that vibrates the stack holder and / or the alignment unit. This supports even more reliable and precise alignment of the components to one another.

[0019] The various embodiments of the invention mentioned in this application can be advantageously combined with one another, unless otherwise stated in the individual case.

[0020] The invention is explained below in exemplary embodiments with reference to the accompanying drawings. They show: Fig. 1 Cross-sectional view of a fuel cell stack; Fig. 2 Bipolar plate in top view (A) and sectional view (B) and membrane electrode assembly in top view (C) and sectional view (D); Fig. 3 assembly system according to the invention for assembling a fuel cell stack in side sectional view (A) and top view (B); Fig. 4 Assembly system according to the invention during the assembly of a fuel cell stack in side sectional view (A) and top view (B); Fig. 5 Manufacturing plant for producing a membrane electrode assembly; Fig. 6 Manufacturing plant for producing a bipolar plate; Fig. 7 Complete production facility, including the production facilities according to Fig. 5 and Fig. 6; Fig. 8 a variant of a slide of an assembly system according to the invention with a perforated plate in side section view (A) and top view (B); Fig. 9 shows a further variant of a chute of an assembly system according to the invention with a gas outlet slot in a side sectional view (A) and top view (B); Fig. 10 shows a further variant of a chute of an assembly system according to the invention with conveyor belts in a side sectional view (A) and top view (B); and Fig. 11 a further variant of a chute of an assembly system according to the invention in the form of a knife edge conveyor belt in side sectional view (A) and top view (B).

[0021] Fig. Figure 1 shows a schematic sectional view of a fuel cell stack, designated overall by 1. The fuel cell stack 1 is essentially composed of alternating (layered) membrane electrode assemblies (MEA) 2 and bipolar plates 3, which are arranged in Fig. 2 under supervision ( Fig. 2A, Fig. 2C) and in sectional view ( Fig. 2B, Fig. 2D) are shown separately.

[0022] The bipolar plate 3 is typically composed of two half-plates 31 made of an electrically conductive material, such as a metal or a carbon compound, arranged one on top of the other and connected to one another (e.g., welded or glued). On both sides of the plate, the bipolar plate 3 has a flow field 32 in a central active region, which is formed, for example, by a plurality of flow channels. The fuel, in particular hydrogen, is supplied to one of its flow fields 32, and an oxidizing agent such as oxygen or air is supplied to the other side. Furthermore, an internal coolant field for conducting a coolant is typically formed between the two half-plates 31. The three operating media are supplied and discharged via supply openings 33 arranged to the side of the flow field 32.The supply openings 33 and the flow field 32 are sealed by seals 34 applied to one of the two half-plates 31. For reasons explained in more detail below, the bipolar plate has at least one recess 35 on each of its sides. In the present example, two recesses 35 are provided on each of the two long sides of the bipolar plates. However, it is not absolutely necessary that recesses 35 be provided on each of the four sides of the bipolar plate 3.

[0023] The membrane electrode assembly 2 comprises a polymer electrolyte membrane 21, on each of whose two main surfaces a catalytic electrode (anode and cathode) is arranged in contact with the membrane 21. Furthermore, a gas diffusion layer (BDL) 22 is typically arranged on each of the catalytic electrodes. The catalytic electrodes can be applied, for example, as double-sided coatings on the polymer electrolyte membrane 21 or on the GDL 22. The area covered by the catalytic electrode represents the active area in which the fuel cell reactions take place and corresponds in position and size to the flow field 32 of the bipolar plate 3. The edge area of ​​the MEA 2 can optionally be reinforced by a carrier material. Congruent with the supply openings 33 of the bipolar plate 3, the MEA 2 also has corresponding supply openings 23.The supply openings 23 as well as the active area are sealed on one side of the MEA 2 by corresponding seals 24. The cut of the MEA 3 corresponds in plan view to the cut of the bipolar plate 3 (see . Fig. 2A and Fig. 2C). Thus, the MEA 2 is also provided with corresponding recesses 25 on its sides.

[0024] In the fuel cell stack 1, the membrane electrode assemblies 2 and the bipolar plates 3 are arranged alternately so that they are aligned as precisely as possible. In particular, the supply openings 23 and 33, as well as the seals 24 and 34, should be precisely aligned to form and seal the main supply channels penetrating the stack in the stacking direction. The active areas (catalytic electrodes 22 and flow fields 32) should also be aligned congruently to establish contact between the operating media supplied via the bipolar plate 3 and the active centers of the catalytic electrode, thus maximizing the active area.

[0025] A highly simplified representation of an assembly system according to the invention for assembling a fuel cell stack 1 is shown as a side sectional view and as a top view in the Fig. 3A and 3B, respectively. The assembly system, designated overall by 10, comprises, as essential components, a conveyor device 20 for conveying the fuel cell components in a conveying direction F, a chute 30 arranged at a conveying end 21 of the conveyor device 20, a height-adjustable stacking support 40 arranged downstream of the chute 30 in the conveying direction F for alternately and layeredly receiving the two fuel cell components, and a gas supply device 50 for generating a gas cushion in the region of a conveying end 31 of the chute 30 and / or on an upper side 32 of the chute 30.

[0026] The conveyor device 20 serves to actively transport the fuel cell components (membrane electrode assemblies 2 and bipolar plates 3) in alternating sequence. For this purpose, it comprises, for example, a belt 22 driven by an electric motor (not shown) via rollers 23. The conveyor speed can be continuously controlled.

[0027] In the context of the present application, a chute is understood to be a component that creates the transition between the conveyor device 20 and the stack holder 40 and, supported by the gas cushion, facilitates this transition. In its simplest embodiment, the chute 30 comprises a plate that is arranged behind the conveying end 21 of the conveyor device 20 in the conveying direction F. The chute is preferably arranged inclined relative to the horizontal. The angle of inclination can be between 0° and 45°, preferably between 10° and 40°. Optionally, the angle of inclination of the chute 30 can be adjustable. The surface of the chute 30 preferably has the lowest possible coefficient of friction with respect to the fuel cell components 2 and 3, so that these can slide over the chute with little resistance.

[0028] In the illustrated embodiment, the gas supply device 50 has a slot-shaped nozzle 52 arranged below the chute 30. The outlet direction of the nozzle 52 is oriented such that it points substantially in the conveying direction F, so that a gas cushion 51 is formed below and after the chute end 31, which facilitates the transport of the fuel cell components 2, 3 via the chute end 31 into the stack receptacle 40. In particular, air is used as the gas. A width of the nozzle 52, i.e. a length of its nozzle slot, is preferably selected such that the gas cushion / air cushion 51 is formed substantially over the entire width of the fuel cell components 2, 3 to be conveyed (see also Fig. 4B). The volume flow of the supplied gas is preferably adjustable.

[0029] The stacking support 40 has a height-adjustable stacking table 41, which is mounted along a stationary mounting wall 44. The stroke can be 600 mm or more with a stroke increment of 0.05 mm. The stacking table 41 is formed from a stacking base 42, on which, in the present example, two side cheeks 43 are arranged at right angles, namely a rear and a lateral side cheek 43. In the example shown, the stacking support 40 further comprises stop elements 45, which are arranged stationary on the side cheeks 43 of the stacking table 41 (see Fig. 3B). The stacking support 40, comprising the mounting wall 44 and the stacking table 41, is arranged tilted by an angle of inclination α. ​​The angle of inclination α with respect to an inclination of the stacking base 42 relative to the horizontal is preferably selected to be between 2 and 15°, preferably between 5 and 10°. The inclined arrangement causes a fuel cell element 2, 3 placed on the base 42 or on a fuel cell stack growing thereon to slide, due to its gravity, towards the rear side wall 43 or the stop elements 45 and come into contact with them. Furthermore, the stacking support 40 in the example shown comprises three alignment units 46, which are arranged to be movable with respect to the stacking table 41 and the fuel cell components 2, 3 placed thereon, as shown in Fig. 3B is indicated by the double arrows. The alignment units 46 are preferably spring-mounted, wherein in a particularly preferred embodiment, the force with which they bear against a side of the fuel cell component 2, 3 is adjustable. The stationary stop elements 45 are arranged such that they support the respective fuel cell component 2, 3 on two of its sides arranged at right angles to one another. The adjustable alignment units 46 are arranged such that they bear against those sides of the fuel cell components 2, 3 which are opposite the sides supported by the stop elements 45. In other words, in the example shown, each of the four sides of a fuel cell component 2, 3 is contacted by at least one stop element 45 or one alignment unit 46.

[0030] The function of the assembly system 10 according to the invention, in particular the interaction of the stack holder 40 and the fuel cell components 2, 3 stored therein, is shown in the Fig. 4A and Fig. 4B. In particular, Fig. 4B shows how the stationary stop elements 45 and the adjustable alignment units 46 engage in the corresponding recesses 35 of a fuel cell component 3 placed on the stacking table. In the example shown, the stop elements 45 and alignment units 46 have a rectangular cross-section, corresponding to the recesses 35 of the bipolar plate 3 and 25 of the MEA 2, respectively. However, any other geometries can also be used, for example, semicircular, triangular, trapezoidal geometries, or mixtures thereof.

[0031] The fuel cell components 2 and 3 are preferably transported via the conveyor 20 and the chute 30 with their seals 24, 34 facing upwards. This ensures the lowest possible friction during transport, in particular, low-friction sliding over the chute. This also facilitates sliding over the resulting stack 1 until it rests against the stop elements 45.

[0032] In a further preferred embodiment, the stacking support 40 is equipped with a vibrating function that causes the stacking table 41 and / or the alignment unit 46 to vibrate. This vibrating function can be implemented particularly easily in the alignment unit 46 due to its spring-loaded mounting. The vibrating function assists in arranging the fuel cell components 2, 3 on the stacking table 41 and ensuring their contact with the stop elements 45.

[0033] In Fig. Figure 5 schematically shows a production system 60 for producing an MEA 2. Here, in a central lamination station 61, a catalytically coated membrane 63 is edge-reinforced with a stabilizing carrier material 62 using continuous roll processes and laminated on both sides with a gas diffusion layer 64. If necessary, an adhesive 65 can be supplied to bond the membrane to the carrier. The product thus produced is fed via a conveyor belt 66 to a sealant station 67, in which the seals 24 are applied to the membrane or carrier. The MEA 2 is then fed to a quality control station 68, in which the product, in particular the position and tightness of the seals 24, is checked using an optical inspection process. If the MEA 2 passes the inspection, it is fed to a rotatable stacking table 80 having two receptacles 81. The stacking table can be rotated through 180°.Loading and unloading of the stacking table 80 can be performed, for example, via an automatic press gripper (not shown). After removal from the stacking table 80, the MEA 2 is fed to the assembly station 10 according to the invention, in particular to its conveyor device 20.

[0034] In Fig. 6 schematically shows a production plant 70 for producing the bipolar plates 3. In a central forming and joining station 71, a supplied plate material 72 for the bipolar plate 3, for example steel, is formed in order to create the profiling of the flow field 32. The joining of two half-plates of the bipolar plate can be achieved using a supplied adhesive 73 or by laser welding. The product thus produced is fed by means of a conveyor belt 74 to a sealant station 75, in which the seals 34 are applied to the plates. The bipolar plate 3 thus produced is fed to a quality control station 76, in which a quality control of the bipolar plate 3, in particular the tightness and position of the seal 34, is carried out using an optical inspection process.If the bipolar plate 3 passes the quality control, it is fed to the previously described rotatable stacking table 80, from where it is fed to the assembly station 10 according to the invention, in particular its conveyor device 20.

[0035] Fig. Figure 7 shows an example of a complete production plant comprising the production plant 60 for the MEA 2 from Fig. 5 and the production line 70 for the bipolar plates 3 from Fig. 6. For example, the production line 60 produces the MEA with a cycle time of 1.6 s and a distance between two MEAs of 200 mm at a feed rate of 15 m / min. The same data applies to the production of the bipolar plates in the production line 70. After the conveyor belts 66 and 74 are brought together, the two components 2 and 3 are conveyed on a common conveyor belt section 82 with a cycle time of 0.8 s and a distance between components 2 and 3 of 400 mm at a feed rate of 40 m / min. At the end, the alternately arriving components 2, 3 are removed from the conveyor belt section 82 by a gripper (not shown) and fed to a holder 83 of the stacking table 80. The stacking table 80 is then rotated by 180° and a second gripper (not shown) removes the components 2, 3 and places them on the Fig. 3 and Fig. 4, in order to layer the components 2, 3 into a fuel cell stack 1 as described above.

[0036] In the described design, the cycle time can be reduced by approximately 80% and the investment volume by approximately 25% compared to current systems that essentially work with linear gantries and robots.

[0037] In the following Fig. 8 to 11 show different variants of the design of the slide of the assembly system 10 from the Fig. 3 and Fig. 4, where A shows a side sectional view and B a top view

[0038] According to Fig. 8, the chute 30 is double-walled, with its upper side being designed as a perforated plate 33, in particular a perforated sheet. The gas, in particular air, is supplied to the cavity of the chute 30 via a gas inlet 53 by the gas supply device (not shown). From there, the gas flows through the perforated plate 33 to the upper side of the chute 30, thus forming the air cushion 51 between the chute 30 and the fuel cell component 3.

[0039] According to the Fig. In the example shown in Figure 9, the chute 30 has an integrated tube 34 running transversely to the conveying direction F, wherein the tube has a gas outlet slot 35 also running transversely to the conveying direction F, which is arranged on the upper side of the chute 30. Here, the gas (air) is fed into the tube 34 by means of the gas supply device (not shown) in such a way that the supplied gas flows out through the gas outlet slot 35 onto the upper side of the chute 30 and thus forms a gas cushion 51 between the chute 30 and the fuel cell component 3.

[0040] According to Fig. 10, the chute 30 is formed from three conveyor belts 36 running parallel in the conveying direction F. As already shown in the Fig. 3 and Fig. 4, the nozzle 52 of the gas supply device 50 is arranged below the chute 30. In this way, the supplied gas can pass through the spaces between the conveyor belts 30 and thus form a gas cushion 51 between the chute 30 and the fuel cell component 3.

[0041] Finally, Fig. 11 shows an embodiment in which an end section of the conveyor device 20 is designed in the form of a knife edge drive 24. Here, the chute 30 is thus formed as a component of the conveyor device 20. The nozzle 52 arranged below the knife edge 24 forms a gas cushion 51 in the region of the knife edge 24, which supports the component 3. List of reference symbols 1 fuel cell stack 2 Membrane electrode assembly / fuel cell component 21 Polymer electrolyte membrane 22 catalytic electrode + gas diffusion layer 23 Supply opening 24 Seal 25 recess 3 Bipolar plate / fuel cell component 31 half plate 32 Flow field 33 Supply opening 34 Seal 35 recess 10 Assembly plant 20 conveyor system 21 sponsors 22 webbing 23 roll 24 knife edge drive 30 slides 31 End of slide 32 top 33 perforated plate, perforated sheet 34 pipe 35 Gas outlet slot 36 conveyor belts 40 stack holder 41 Stacking table 42 Floor 43 side panel 44 Assembly wall 45 stop element 46 Alignment unit 50 Gas supply device 51 Gas cushion, pleasure cushion 52 nozzle, slot nozzle 53 Gas inlet 60 Manufacturing plant for membrane electrode assembly 61 Laminating station 62 carriers 63 Catalytically coated membrane (CCM) 64 Gas diffusion layer (GDL) 65 Adhesive 66 Conveyor belt 67 Sealant station 68 Quality Control Station 70 Bipolar plate manufacturing plant 71 Forming and joining station 72 panel material 73 Adhesive 74 Conveyor belt 67 Sealant station 68 Quality Control Station 80 rotating stacking table 81 recording 82 common conveyor belt section

Claims

[1] Assembly system (10) for assembling a fuel cell stack (1) composed of alternately stacked fuel cell components comprising membrane electrode assemblies (2) and bipolar plates (3), the assembly system (10) comprising: a conveying device (20) for conveying the membrane electrode assemblies (2) and bipolar plates (3) in alternating sequence in a conveying direction (F); a chute (30) arranged at a conveying end (21) of the conveying device (20); a height-adjustable stacking support (40) arranged downstream of the chute (30) in the conveying direction (F) for alternately receiving and stacking the membrane electrode assemblies (2) and bipolar plates (3) and a gas supply device (50) for generating a gas cushion (51) beneath the fuel cell components (2, 3) in the region of a conveying end (31) of the chute (30) and / or on an upper side (32) of the chute (30). [2] Assembly system (10) according to claim 1, wherein the gas supply device (50) has a slot-shaped nozzle (52) which is arranged below the chute (30) with the outlet direction aligned in the conveying direction (F). [3] Assembly system (10) according to claim 1 or 2, wherein the chute (30) has a perforated plate (33), wherein the gas supply device (50) supplies the gas through the perforation so that the gas cushion (51) is formed on the perforated plate (33). [4] Assembly system (10) according to claim 1 or 2, wherein the chute (30) has a gas outlet slot (35) extending transversely to the conveying direction and the gas supply device (50) supplies the gas through the gas outlet slot (35) in such a way that the gas cushion (51) is formed on the chute (30). [5] Assembly system (50) according to claim 1 or 2, wherein the chute (30) is formed from a plurality of at least two conveyor belts (36) arranged parallel in the conveying direction (F). [6] Assembly system (10) according to one of claims 1 to 5, wherein a base (42) of the stack holder (40) is arranged tilted with an angle of inclination (α) relative to the horizontal, wherein the angle of inclination (α) is preferably in the range of 2° to 15°. [7] Assembly system (10) according to one of claims 1 to 6, wherein the stack holder (40) has at least two stop elements (45) which support the fuel cell components (2, 3) on two of their sides, preferably on two sides of the fuel cell components (2, 3) arranged at right angles to one another. [8] Assembly system (10) according to claim 7, wherein the assembly system (10) comprises at least one alignment unit (46) which bears with an adjustable force against a side of the fuel cell components (2, 3) which is opposite the side supported by a stop element (45). [9] Assembly system (10) according to claim 7, wherein the at least one alignment unit (46) is movable with respect to a distance from the fuel cell component (2, 3). [10] Assembly system (10) according to one of claims 1 to 9, wherein the stack holder (40) has a vibrating function which causes the stacking table (41) and / or the alignment unit (46) to vibrate.

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