Abstract: The invention relates to a fuel cell system (10) comprising at least one fuel cell stack (11) having an anode section (12) and a cathode section (13), an ejector (14), a fuel mixture line (15) for conveying a fuel mixture—containing primary fuel and secondary fuel—from the ejector (14) to the anode section (12), a primary fuel line (16) for supplying the primary fuel to the ejector (14), and a recirculation line (17) for returning the secondary fuel from the anode section (16) to the ejector (14), wherein at least sections of the primary fuel line (16) extend through a heat exchange volume (18) within the recirculation line (17) for a heat-transmitting connection between the secondary fuel and the primary fuel.

Abstract: The present invention concerns a starting burner (100a; 100b) for a fuel cell system (1000a; 1000b), having a catalyst (10) with a catalyst inlet (11) and a catalyst outlet (12), a catalyst area (13) being formed between the catalyst inlet (11) and the catalyst outlet (12), and the catalyst area (13) being surrounded by a catalyst wall (14) in a passage direction (D) from the catalyst inlet (11) to the catalyst outlet (12), and an operating fluid guide section (20) for supplying an operating fluid (F1) to the catalyst inlet (11), wherein the operating fluid guide section (20) is arranged outside the catalyst (10) at least in sections along the catalyst wall (14). The invention also concerns a fuel cell system (1000) with the starting burner (100a; 100b) and a method for heating a service fluid (F1) in the fuel cell system (1000a; 1000b).

Abstract: The present invention relates to a generator unit (1) having a housing (10), a fuel cell device (20), which is arranged in an interior space (10a) of the housing (10), a gas-carrying duct (30) having an upstream opening (30a) and a downstream opening (30b), a valve (40), which is provided, in particular set up, to connect the interior space (10a) to the duct (30) at least at times in a gas-carrying manner, a driving device (50), which moves gas within the duct (30) from the upstream opening (30a) to the downstream opening (30b), and a sensor device (60), which is arranged in a downstream direction of the duct (30) starting from the valve (40) and is designed to detect at least one parameter of the gas. The present invention also relates to a method for monitoring a generator unit.

Abstract: The present invention relates to a generator unit (1) comprising a housing (100) having at least one opening (112), a fuel cell device, which is arranged in the housing (100), a tail pipe device (200) having at least one exhaust pipe (210), which is connected to the fuel cell device in a gas-carrying manner and extends through the opening (112) of the housing (100), and an insulator (220), which extends at least in an area between an outer wall of the exhaust pipe (210) and an edge of the opening (112) and, in particular, reduces, in particular, at least for the most part, prevents, heat transfer from the exhaust pipe (210) to the housing (100). Furthermore, the present invention relates to a tail pipe device (200) for use in a generator unit (1) of the type described here.

Abstract: The present invention relates to a fuel cell unit (100a; 100b; 100c; 100d; 100e; 100f; 100g; 100h) for a fuel cell system (1100), comprising at least a first fuel cell stack (3.1, 3.2), at least a second fuel cell stack (4.1, 4.2), an anode gas supply line (6), an anode exhaust line (7), a cathode gas supply line (8), a cathode exhaust line (9), and at least one BOP device (1, 2) for ensuring the operability of the fuel cell system (1100), the anode gas supply line (6), the anode exhaust line (7), the cathode gas supply line (8) and/or the cathode exhaust line (9) in at least one stack section (A, B) in between at least one first fuel cell stack (3.1, 3.2) and at least one second fuel cell stack (4.1, 4.2), wherein the at least one BOP device (1, 2) in the at least one stack section (A, B) within the anode gas supply line (6), the anode exhaust line (7), the cathode gas supply line (8) and/or the cathode exhaust line (9) are arranged.

Abstract: This invention concerns a fuel cell system (100a; 100b; 100c) comprising a fuel cell stack (1) having an anode portion (2) and a cathode portion (3), a reformer (4) for supplying reformed anode gas to the anode portion (2), and an exhaust gas burner (5) for burning anode exhaust gas from the anode portion (2) and/or cathode exhaust gas from the cathode portion (3), wherein the reformer (4) is arranged at least in sections annularly around the exhaust gas burner (5), wherein an inner wall portion of the reformer (4) is arranged completely or at least substantially around an outer wall portion of the exhaust gas burner (5). The invention also concerns a method for operating a fuel cell system conforming to the invention (100a; 100b; 100c) and a motor vehicle (1000) with a fuel cell system conforming to the invention (100a; 100b; 100c).

Abstract: The present invention concerns a starting burner (100a; 100b) for a fuel cell system (1000a; 1000b), having a catalyst (10) with a catalyst inlet (11) and a catalyst outlet (12), a catalyst area (13) being formed between the catalyst inlet (11) and the catalyst outlet (12), and the catalyst area (13) being surrounded by a catalyst wall (14) in a passage direction (D) from the catalyst inlet (11) to the catalyst outlet (12), and an operating fluid guide section (20) for supplying an operating fluid (F1) to the catalyst inlet (11), wherein the operating fluid guide section (20) is arranged outside the catalyst (10) at least in sections along the catalyst wall (14). The invention also concerns a fuel cell system (1000) with the starting burner (100a; 100b) and a method for heating a service fluid (F1) in the fuel cell system (1000a; 1000b).

Abstract: The present invention relates to a generator unit (1) having a housing (10), a fuel cell device (20), which is arranged in an interior space (10a) of the housing (10), a gas-carrying duct (30) having an upstream opening (30a) and a downstream opening (30b), a valve (40), which is provided, in particular set up, to connect the interior space (10a) to the duct (30) at least at times in a gas-carrying manner, a driving device (50), which moves gas within the duct (30) from the upstream opening (30a) to the downstream opening (30b), and a sensor device (60), which is arranged in a downstream direction of the duct (30) starting from the valve (40) and is designed to detect at least one parameter of the gas. The present invention also relates to a method for monitoring a generator unit.

Abstract: The present invention relates to a generator unit (1) comprising a housing (100) having at least one opening (112), a fuel cell device, which is arranged in the housing (100), a tail pipe device (200) having at least one exhaust pipe (210), which is connected to the fuel cell device in a gas-carrying manner and extends through the opening (112) of the housing (100), and an insulator (220), which extends at least in an area between an outer wall of the exhaust pipe (210) and an edge of the opening (112) and, in particular, reduces, in particular, at least for the most part, prevents, heat transfer from the exhaust pipe (210) to the housing (100). Furthermore, the present invention relates to a tail pipe device (200) for use in a generator unit (1) of the type described here.