摘要:
A device is used for supplying fuel to a burner in a fuel cell system with a reformer. The fuel comprises a materials flow of a reformate gas, which materials flow is depleted of hydrogen, and a materials flow of a compound which comprises carbon and hydrogen. According to the invention, the device comprises at least one nozzle means in which the two materials flows can be mixed together. At least one of the materials flows is controllable as far as its through-flow is concerned.
摘要:
A device is used for supplying fuel to a burner in a fuel cell system with a reformer. The fuel comprises a materials flow of a reformate gas, which materials flow is depleted of hydrogen, and a materials flow of a compound which comprises carbon and hydrogen. According to the invention, the device comprises at least one nozzle means in which the two materials flows can be mixed together. At least one of the materials flows is controllable as far as its through-flow is concerned.
摘要:
A battery is provided with a plurality of individual cells connected in series and/or in parallel to one another, and at least one cooling plate arranged on the pole side on the individual cells, with current drain tabs of electric poles of the individual cells being thermally coupled with the cooling plate and being angled such that they extend parallel to the cooling plate. Current drain tabs of adjacent individual cells are electrically interconnected in non-positive and/or in positive manner and pressed with the cooling plate in non-positive and/or in positive manner by clamping elements.
摘要:
A method and a system for resistance seam welding of a foil and at least one foil support of a fuel cell system. During welding, the thin foil, together with the thicker foil support, is moved relative to the roller electrode while resting on a flat support element. In a suitable welding system, a counter-electrode is designed as a flat support element, such as a welding strip, that is displaceable relative to the roller electrode, the roller electrode being in rolling contact with the foil support, but not with the foil. Depending on whether one foil is to be welded to one or two foil frames, the support element may be designed having a high or a low specific electric resistance.
摘要:
The invention relates to a fuel cell system (11, 111) comprising an anode chamber (13, 113) and a cathode chamber (14, 114) which are separated from each other by a proton conducting membrane (15, 115). When the fuel cell system is operated, fuel, in particular H2 or a water/methanol mixture, can be fed to the anode chamber and an oxidant, in particular oxygen, can be fed to the cathode chamber. In standby mode, the cathode chamber (14, 114) does not allow flow through and the oxidant and fuel are present in both the cathode chamber (14, 114) and the anode chamber (13, 113), respectively. The fuel cell system remains at operating temperature in the standby mode. This enables the fuel cell system (11) to be used as a combined interruption-free power supply unit and backup unit.
摘要:
An apparatus is used for the recirculation of anode exhaust gases of a fuel cell, with a recirculation blower and at least one jet pump operated by a propulsion gas stream. The propelling medium is in this case a pressurized fuel, for example hydrogen. The anode outlet of the fuel cell is connected to the intake connection of the at least one jet pump. The outlet of the at least one jet pump is then connected to both the anode inlet and the intake connection of the recirculation blower. The output of the recirculation blower can be connected to the intake connection of the at least one jet pump.
摘要:
A fuel cell system (1) including at least one fuel cell (2) having a cathode area (3) and an anode area (4) is disclosed. The cathode area (3) and the anode area (4) have feed conduits (31, 41) and discharge conduits (32, 42). Downstream of the anode area (4) and the cathode area (3), a junction (12) of the discharge conduits (32, 42) is provided. The junction (12) fluidically communicates with an area (13) which includes a material that is catalytically active with respect to a reaction of a fuel for the fuel cell (2) with an oxidant for the fuel cell (2). The feed conduit (31) leading to the cathode area (3) is configured in such a manner that it fluidically communicates with the cathode area (3) in at least two different sites (19, 20) in each of the fuel cells (2). A humidifying device (16) is provided in the feed conduit (41) leading to the anode area (4).
摘要:
An apparatus generates virtually pure hydrogen for fuel cells, and includes a device for reforming starting substances having at least one hydrocarbon-containing compound and water. Furthermore, the apparatus has catalytic agents for producing a water gas shift reaction in the reformate gas stream generated by the reforming device. Moreover, the apparatus includes a device for separating hydrogen out of the reformate gas stream using membranes which are selectively permeable to hydrogen. The hydrogen-separating device includes a proportion of the catalytic agents for producing the water gas shift reaction. A device for exchanging thermal energy between the reformate gas stream and a further stream of medium is arranged downstream, as seen in the direction of flow, of the reforming device. The device for exchanging thermal energy includes a further proportion of the catalytic agents for producing the water gas shift reaction.
摘要:
A single cell having a casing formed from a first casing side part, a second casing side part and a casing frame, in which casing an electrolyte and an electrochemically active electrode foil unit are arranged, wherein the casing comprises an overpressure protection. The first casing side part includes a casing side part segment going at least sectionally over a length of the single cell, which casing side part segment is angled down in relation to the first casing side part in the direction of the cell interior and in which the overpressure protection is arranged and a venting opening is incorporated into the casing frame in a region of the overpressure protection.
摘要:
A fuel cell system (1) including at least one fuel cell (2) having a cathode area (3) and an anode area (4) is disclosed. The cathode area (3) and the anode area (4) have feed conduits (31, 41) and discharge conduits (32, 42). Downstream of the anode area (4) and the cathode area (3), a junction (12) of the discharge conduits (32, 42) is provided. The junction (12) fluidically communicates with an area (13) which includes a material that is catalytically active with respect to a reaction of a fuel for the fuel cell (2) with an oxidant for the fuel cell (2). The feed conduit (31) leading to the cathode area (3) is configured in such a manner that it fluidically communicates with the cathode area (3) in at least two different sites (19, 20) in each of the fuel cells (2). A humidifying device (16) is provided in the feed conduit (41) leading to the anode area (4).