| Patent application number | Description | Published |
|---|
| 20080220311 | Pem Fuel Cell with Charging Chamber - Proposed is a PEM fuel cell that comprises a separator plate assembly with a charging chamber, which is partitioned off by a partition wall and via charging spots has a fluid connection to an adjoining cathode chamber. The partition wall is designed so that the depths of the charging channels in the charging chamber and the depths of the distribution channels in the adjoining cathode chambers change in such a way that the quantity of oxidant that is charged at a charging spot from the charging chamber into the cathode chamber can be fixed in advance. As a result, the charging of oxidant, which has not been humidified or only slightly, into the cathode chamber can be improved with regard to the curve of the relative humidity along the cathode. Also proposed is a method for manufacturing a separator plate assembly suitable for a PEM fuel cell. | 09-11-2008 |
| 20090197134 | FUEL CELL WITH A SEPARATOR PLATE UNIT, AND A SEPARATOR PLATE UNIT - The invention relates to a fuel cell having a membrane electrode arrangement ( | 08-06-2009 |
| 20090325036 | Bipolar Plate and Fuel Cell Unit - The invention relates to a bipolar plate for a fuel cell stack, which comprises at least a an anode-side sub-plate. An interior of the bipolar plate is enclosed by the sub-plates, with a fluid port area arranged having at least one fluid port, over which a fluid can be conveyed to the fluid channels. The fluid channels are arranged on at least one of the flat sides, as well as a manifold zone, over which the fluid can be distributed to its assigned fluid channels and an accumulation zone, over which the fluid can be carried away from the fluid channels to another fluid port area. At least one of the sub-plates has a uniform arrangement of raised support points in the manifold zone and/or accumulation zone. Apart from the peripherally situated support points, a negative support point of the same type is designed adjacent to each raised support point inside the manifold zone and/or the accumulation zone. | 12-31-2009 |
| 20110097648 | Control of a fluid flow in an electrochemical cell - The invention relates to an electrochemical cell, especially a proton exchange membrane fuel cell (PEM fuel cell) or an electrolysis cell which displays improved efficiency as a result of improved temperature or moisture distribution and/or reactant distribution inside said cell. The invention is characterized in that in an electrochemical cell, comprising a channel structure for feeding, circulating and discharging fluids necessary for the operation of said cell, at least one element ( | 04-28-2011 |
| 20110159396 | BIPOLAR PLATE FOR A FUEL CELL ARRANGEMENT, IN PARTICULAR FOR PLACEMENT BETWEEN TWO ADJACENT MEMBRANE ELECTRODE ARRANGEMENTS - The invention relates to a bipolar plate ( | 06-30-2011 |
| 20110229779 | INTERNALLY GAS REGULATED FUEL CELL - A fuel cell includes a membrane electrode assembly (MEA) and at least one bipolar plate having an anode-side gas distributor structure for distributing anode reactants, a cathode-side gas distributor structure for distributing cathode reactants, and a guide passage structure for distributing a cooling medium. At least one of the anode-side gas distributor structure and the cathode-side gas distributor structure is divided into at least a first field and a second field, each of the first and second fields having an entry port and an exit port for the reactants. In addition, a method for such a fuel cell includes passing a reactant into an entry port of the first field and out of an exit port of the first field, mixing the reactant with a fresh reactant so as to form a mixture, and passing the mixture into the entry port of the second field. | 09-22-2011 |
| 20140315110 | Method for Operating a Fuel Cell - A method for operating a fuel cell system involves operating the fuel cell with recirculation of anode exhaust gas below a predefined maximum load limit of the fuel cell and operating the fuel cell without recirculation of the anode exhaust gas between the load limit and the full load of the fuel cell. | 10-23-2014 |
| 20150044590 | METHOD FOR OPERATING A FUEL CELL STACK FOR A FUEL CELL SYSTEM, AND FUEL CELL SYSTEM - A method for operating a fuel cell stack ( | 02-12-2015 |
| 20150086886 | Fuel Cell Stack Arrangement with at least one Multi-Functional End Plate - A fuel cell stack arrangement includes a fuel cells arranged between a first and a second end plate. At least one of the end plates is designed as a channel end plate with at least one channel. The channel has a stack opening, which is opened in the direction of the stack, and a second opening. The stack opening and the second opening are connected to each other via a channel section and are arranged at a distance to each other in a top view looking down on the channel end plate. | 03-26-2015 |
