Abstract: The invention proposes a method for connecting plate-like components of a bipolar plate, comprising the steps of placing a first plate-like component on a clamping surface, placing a second plate-like component onto the first plate-like component, fitting a plurality of hold-down devices on an outer surface of the second plate-like component, said outer surface facing away from the first plate-like component and the clamping surface, wherein an envisaged seam line is kept free between the hold-down devices, pressing of the plate-like components together using all of the hold-down devices, wherein, for this purpose, a magnetic force acting in the direction of the clamping surface is applied to at least one of the hold-down devices, and welding the plate-like components along the seam line in a continuous operation.

Abstract: The invention relates to a tank device (1) for storing a gaseous medium, in particular hydrogen, comprising at least one tank container (2), wherein said at least one tank container (2) has a tank housing (20) with a tank neck (3). In addition, a connection screw element (5) is arranged in the tank neck (3), wherein said connection screw element (5) is in contact with a conical sealing seat (10) formed on an inner face (8) of the tank housing (20), thereby sealing a tank neck interior (30) of the tank neck (3), and the connection screw element (5) can be pretensioned by means of a union nut element (6) attached to an outer face (9) of the tank housing (20).

Abstract: The invention relates to a method for producing a metal-supported fuel cell and/or electrolyzer unit, in particular a metal-supported solid oxide fuel cell unit, wherein the metal-supported fuel cell and/or electrolyzer unit comprises at least one electrode unit (14a; 4b; 14c; 14f) with at least two functional layers (16a, 18a;16b, 18b;16c, 8c; 16f, 18f), and the metal-supported fuel cell and/or electrolyzer unit comprises at least one metal support device for supporting the electrode unit (14a; 14b; 14c; 14f). According to the invention, the metal support device and the electrode unit (14a; 14b; 14c; 14f) which has the at least two functional layers (16a, 8a; 16c, 18c; 16f, 18f) are produced separately.

Abstract: The invention relates to a distributor structure (12, 20), particularly a bipolar plate for a stack structure (10) of a fuel cell or of an electrolyser. The distributor structure (12, 20) comprises a channel structure (48) that interacts with at least one polymer membrane (16). The distributor structure (12, 20) is designed as a plastic part (40) that has electrically conductive properties.

Abstract: An electrode support device for supporting an electrode unit of a fuel cell unit and/or electrolyzer unit, in particular of a solid oxide fuel cell unit. The electrode support device includes at least one electrode installation surface for the electrode unit, and at least one form-fitting unit situated at the electrode installation surface for fixing the electrode unit at the electrode installation surface.

Abstract: An electrochemical cell (10), in particular a fuel cell and/or an electrolytic cell and/or a metal-air cell, having at least one functional layer system (12), which is distinguished by the fact that at least one tubular support body (14) is formed, in which at least one tunnel-like structure (16) is formed, which adjoins the at least one functional layer system (12). A method for producing an electrochemical cell (10).

Abstract: A fuel cell device having a fuel cell unit (12) which has at least one anode (14) and at least one cathode (16), having at least one anode gas processor (18) which has at least one first heat exchanger (20), and having at least one cathode gas processor (22) which has at least one second heat exchanger (24). The at least one first heat exchanger (20) and the at least one second heat exchanger (24) each take a helical form.