Abstract

A method for producing a metallic interconnector for a fuel cell stack, including an air guiding surface with a first gas distributor structure and a fuel gas guiding surface with a second gas distributor structure, the first gas distributor structure and the second gas distributor structure each formed by grooves and webs, includes providing a sheet metal blank, forming the sheet metal blank by a plastic molding process, the first gas distributor structure and the second gas distributor structure being formed in such a manner that the grooves and webs of the first gas distributor structure are arranged complementary to the grooves and webs of the second gas distributor structure at a predeterminable percentage of area of the air guiding surface and the fuel gas guiding surface of at least 50% and at most 99%.

IPC Classes  ?

• H01M 8/026 - CollectorsSeparators, e.g. bipolar separatorsInterconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
• B21D 13/10 - Corrugating sheet metal, rods or profiles, or bending sheet metal, rods or profiles into wave form into a peculiar profiling shape
• H01M 8/0208 - Alloys
• H01M 8/0206 - Metals or alloys
• H01M 8/021 - Alloys based on iron
• H01M 8/0254 - CollectorsSeparators, e.g. bipolar separatorsInterconnectors characterised by the form corrugated or undulated
• H01M 8/0258 - CollectorsSeparators, e.g. bipolar separatorsInterconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
• H01M 8/124 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte

Abstract

A fuel cell module includes fuel cells, a gas supply system, a first accumulator, a second accumulator, and power connection. The fuel cells are arranged in a cell stack having a first axial end and a second axial end. The gas supply system is configured to supply gas for the operation of the fuel cells, the fuel cells being stacked in an axial direction. The first accumulator is arranged at the first axial end of the cell stack. The second accumulator is arranged at the second axial end of the cell stack. The power connection is electrically conductively connected to the second accumulator, and is arranged at the gas supply system. The cell stack is arranged within an insulation sheath and the gas supply system is arranged partly outside the insulation sheath and the power connection is arranged outside the insulation sheath.

IPC Classes  ?

• H01M 8/04 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
• H01M 8/24 - Grouping of fuel cells, e.g. stacking of fuel cells
• H01M 8/2465 - Details of groupings of fuel cells
• H01M 8/04082 - Arrangements for control of reactant parameters, e.g. pressure or concentration
• H01M 8/2425 - High-temperature cells with solid electrolytes
• H01M 8/0206 - Metals or alloys
• H01M 8/2475 - Enclosures, casings or containers of fuel cell stacks
• H01M 8/0612 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
• H01M 8/12 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte

Abstract

A fuel cell module includes fuel cells and an air supply system. The fuel cells are arranged in a cell stack. The air supply system is configured to supply air into an air distribution space for operating or cooling the fuel cells. The fuel cells are stacked in an axial direction. The air supply system is configured such that cooling results due to the air supplied to the fuel cells not being of uniform strength in the axial direction. The air supply system is arranged completely radially outside the cell stack.

IPC Classes  ?

• H01M 8/04 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
• H01M 8/24 - Grouping of fuel cells, e.g. stacking of fuel cells
• H01M 2/38 - Arrangements for moving electrolytes
• H01M 2/40 - Arrangements for moving electrolytes with external circulating path
• H01M 8/04014 - Heat exchange using gaseous fluidsHeat exchange by combustion of reactants
• H01M 8/04082 - Arrangements for control of reactant parameters, e.g. pressure or concentration
• H01M 8/04007 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
• H01M 8/2475 - Enclosures, casings or containers of fuel cell stacks
• H01M 8/2425 - High-temperature cells with solid electrolytes
• H01M 8/0612 - Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants from carbon-containing material
• H01M 8/124 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte

Abstract

A method for the combined controlled regulation of fuel gas-oxygen carriers of a gas operated energy converter plant (15), in particular of a fuel cell plant, is provided in which the mass or volume through flow of the fuel gas (1) and/or of the oxygen carrier (2) is detected in order to regulate the mixing ratio (r) of fuel gas to oxygen carrier. In the method at least two physical parameters of the fuel gas are additionally determined using a micro thermal sensor (3.1, 3.2), for example, the mass flow and/or volume through flow of the fuel gas and the thermal conductivity or thermal capacity of the fuel gas are determined and a desired value for the mixing ratio is determined from the physical parameters which depends on the fuel gas or on the composition of the fuel gas, and which desired value is used for the regulation of the mixing ratio.

IPC Classes  ?

• H01M 8/04 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
• H01M 8/04089 - Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
• G01F 1/68 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
• G01N 33/22 - FuelsExplosives
• H01M 8/0438 - PressureAmbient pressureFlow
• H01M 8/0444 - ConcentrationDensity
• H01M 8/04746 - PressureFlow
• F23N 5/00 - Systems for controlling combustion
• H01M 8/124 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte characterised by the process of manufacturing or by the material of the electrolyte

Abstract

0) of the operating temperature for a new fuel cell or for a new fuel cell stack is typically smaller than or equal to the operating temperature, at which the electrical maximum power is achieved and the fuel cell or the fuel cell stack is regulated such that the decrease of the output electrical power as a consequence of aging is partly or completely compensated in that the operating temperature (T) of the fuel cell or of the fuel cell stack is increased with progressive aging.

IPC Classes  ?

• H01M 8/04 - Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
• H01M 8/12 - Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte

Abstract

b). The fuel cell system (1) additionally includes an apparatus (10) having a gas-permeable structure which contains a substance which reacts with gaseous chromium species, wherein the apparatus is in communication with at least one of the outlets to direct exhaust gases through the apparatus and to separate chromium species which are carried along by the exhaust gases.

IPC Classes  ?

• H01M 8/00 - Fuel cellsManufacture thereof

Goods & Services

Devices for electric energy production (electrochemical cells) and their parts and components; facilities equipped with electrochemical cells and their parts for the simultaneous production of electric energy and heat energy; operator panels and adjusters for the above-mentioned devices; spare parts for the above-mentioned devices included in this class. Devices for heat production (electrochemical cells) as well as their parts and components, particularly electrolytic plates; electrolytic plates of ceramic materials; electrode-coated electrolytic plates; electrolytic plates applied in batteries and modules; fittings; metal fittings, electroslag fittings for the conduction of electric current and liquid gas; devices for the production and preparation of fuel gas for electrochemical cells based on fuel gas and/or liquid gas; heat exchangers; heating apparatus with electrochemical cells; heat accumulators; all the aforementioned goods in the form of stationary, mobile and portable facilities and devices for vehicles and buildings.

Goods & Services

Liquid and gaseous fuels for fuel cells. Metallic containers for storing gasses. Fuel-cell installations and devices and components thereof for producing electricity, in particular for simultaneously producing both electricity and heat energy; all aforementioned products also as mobile and portable installations and devices for vehicles; installations for storing electricity, heat and gasses, especially reformers; installations and devices for producing and preparing gaseous fuel for gaseous and liquid fuel cells, especially reformers; installations for liquid and gaseous fuels for fuel cells in the form of stationary, mobile and portable systems, in particular for vehicles and buildings. Controlling and regulating devices for fuel-cell and energy-battery installations and parts thereof; storage batteries, also in the form of mobile and portable installations and devices for vehicles and buildings; tube fittings (in particular metal fittings) and electrically conductive connectors. Fuel cells, in particular high-temperature fuel cells; stacks consisting of such fuel cells; parts of fuel cells, especially electrolytic ceramic plates; electrode-coated electrolytic plates; interconnectors; devices made up of several electrolytic plates for batteries (especially round batteries); connectors (especially metal connectors) and electrically conductive connectors designed to conduct gasses; fuel-cell installations and devices and parts thereof for the production of thermal energy, especially for simultaneously producing both electricity and heat energy; heat accumulators, all aforementioned products also in the form of stationary, mobile and portable devices and facilities for vehicles and buildings. Gas-permeable heat insulating jackets, in particular air-permeable materials; vacuum heat insulation jackets; all goods for fuel cells. Retailing fuel cells and parts thereof, especially individual parts; retailing liquid and gaseous fuels for fuel cells; retailing electricity and thermal energy. Installation, maintenance and repair of fuel cells and fuel-cell installations. Training in the use and operation of fuel cells and the running of fuel-cell installations. Technical advice on how to use and operate fuel cells, and run fuel-cell installations.