摘要:
This invention relates to a fuel cell system with a polyelectrolyte membrane fuel cell and a method by which the pressure inside the fuel cell can be regulated by means of the quantity of fuel introduced. This regulation is accomplished by means of pressure sensors which are controlled by means of an electronic control unit.
摘要:
The invention relates to a planar fuel cell system comprising at least two fuel cells which are electrically mounted in series by means of horizontally overlapping connecting lugs (8 and 8′, 18 and 18′) and/or strip conductors (40), and a polymer electrolyte membrane (3). According to the invention, the current path is guided around the polymer electrolyte membrane, the fuel cell system is embodied as an arrangement of two printed circuit boards, according to printed circuit board technique, and the current collectors and connecting lugs arc embodied as strip conductors of said printed circuit boards.
摘要:
The present invention relates to a micro cell system (1) with a membrane electrode assembly (MEA) (2) which in each case is covered on the cathode-side and anode-side with a current collector foil (3, 4). The current collector foils in each case comprise at least one gas-permeable opening (5, 6). On at least one of the current collector foils (3, 4) on a side facing the MEA (2) there are arranged diffusion channels (7, 8) These replace e.g. porous or fleece-like gas diffusion layers and thus alone ensure the micro-diffusion of gas on the MEA (2) The diffusion channels for this are connected to the gas-permeable opening (5, 6) for leading through gas, and the webs (9, 10) of the diffusion channels are provided with an electrically conductive surface (11, 12) for contacting the MEA.
摘要:
A planar fuel cell system comprising at least two fuel cells which are electrically connected in series in a plane via horizontally overlapping connecting lugs and comprise an anode current collector on the anode side and comprise a cathode current collector on the cathode side is provided. The current collectors are electrically connected to the connecting lugs and a polymer electrolyte membrane, wherein the current path is led around the polymer electrolyte membrane. The fuel cell system is designed with a printed circuit board technique and as a composite of a first, anode-side printed circuit board and a second, cathode-side printed circuit board, and the current collectors and connecting lugs are designed as strip conductors of these printed circuit boards. Methods of manufacturing the fuel cell system are also provided.
摘要:
For migrating process instances, first input information describing changes between a first process template and a second process template is received. Second input information describing grouping of said changes is also received. A set of combinations of the first process template and the second process template is determined by applying the changes to the first process template in complete groups as defined by the second input information.
摘要:
A headrest for a vehicle seat, in particular for a motor vehicle seat, is proposed. The headrest includes a padded part facing the head of a seat occupant, a basic part and a comfort-adjustment device. When the headrest is in use, the padded part can be adjusted by the comfort-adjustment device relative to the basic part from a first position, in which it is further away from the head of the seat occupant, into a second position, closer to the head of the seat occupant. The comfort-adjustment device has two control elements which can be set in a locking position and in an unlocking position, the movement of the control elements being synchronized.
摘要:
A filtering element for filtering devices, comprising a filtering material (5) which defines a filtering space and is intended for the filtration of fluids, and at least one water indicator (13, 19, 23) which is provided at a location coming into contact with fluid during the filtration mode and indicates the presence of water in the fluid in a visually recognizable manner, is characterized in that the at least one water indicator (13, 19, 23) is provided on an end cap (7, 9) for mounting at one end of the filtering material (5), and/or is at least partially part of the end cap (7, 9), and/or is provided on a fluid-permeable supporting structure (21) surrounding the filtering material (5), and/or is at least partially part of the supporting structure (21).
摘要:
The invention relates to a proton-conducting polymer membrane and to a method for the production thereof. Starting from a catalyst layer, which is homogeneously deposited on the polymer membrane (3), the catalyst layer is subdivided into a number of catalyst segments (1a, 1b) by microstructuring so that adjacent fuel cell units of a planar fuel cell arrangement can be realized in the smallest possible space.
摘要:
A filter has a filter medium (10) during operation clears fluid, particularly in the form of hydraulic fluid. The filter medium (10) is made of a material such that the potential difference to the fluid to be cleaned is low. The parts of the filter medium (10) have different potentials with respect to each other and/or the fluid to be cleaned such that they cancel each other at least partially, specific dissipation is aspired, or a return of electric charge to the associated filter medium (10) is provided, using a charge equalization situation.
摘要:
The invention relates to a filter material (2) for fluids, in particular hydraulic fluids, comprising a filter medium (4) having at least one layer, and a supporting structure (6) which is partially made of a plastic material and rests flatly in some surface areas on at least one side of the filter medium (4). Said filter material is characterized in that the filter medium (4) and the supporting structure (6) are connected to one another by laminating, covering and/or by a melting process.