摘要:
A fuel cell component including a body disposed along a plane and having a boundary past which a reactant and water flows is provided. The boundary has a discontinuous edge adapted to militate against a pinning of the water at the edge. The fuel cell component may be a bipolar plate having a port hole with the discontinuous edge. The fuel cell component may be a subgasket for a fuel cell having a boundary with the discontinuous edge. The discontinuous edge facilitates a transportation of water from an upper surface of the fuel cell component to a lower surface of the fuel cell component.
摘要:
An anode reactant recycling system for a fuel cell is disclosed, the system including a hollow main body, a bleed conduit, an injector, a water separator, and a hydrophilic porous media. The anode reactant recycling system for a fuel cell is configured to minimize a required number of components, eliminate the need for the anode heat exchanger, use a single valve for removal of condensate and reactant byproducts from the anode reactant recycling system, and provide an upstream volume for startup pressurization.
摘要:
A fuel cell component includes a first fluid distribution layer, a second fluid distribution layer, a cap layer, a third fluid distribution layer, and a pair of fluid diffusion medium layers. The individual layers are polymeric, mechanically integrated, and formed from a radiation-sensitive material. The first fluid distribution layer, the second fluid distribution layer, the cap layer, the third fluid distribution layer, and the pair of fluid diffusion medium layers are coated with an electrically conductive material. A pair of the fuel cell components may be arranged in a stack with a membrane electrode assembly therebetween to form a fuel cell.
摘要:
A seal structure is disclosed for forming a substantially fluid tight seal between a UEA and a plate of a fuel cell system, the seal structure including a sealing member formed in one fuel cell plate, a seal support adapted to span feed area channels in an adjacent fuel cell plate, and a seal adapted to cooperate with a UEA disposed between the fuel cell plates, the sealing member, and the seal support to form a substantially fluid tight seal between the UEA and the one fuel cell plate. The seal structure militates against a leakage of fluids from the fuel cell system, facilitates the maintenance of a velocity of a reactant flow in the fuel cell system, and a cost thereof is minimized.
摘要:
A fuel cell system that enables an assisted anode purge upon start-up is provided. The fuel cell system includes a fuel cell stack having a plurality of fuel cells with anodes and cathodes. The fuel cell stack has an anode supply manifold and an anode exhaust manifold in fluid communication with the anodes. The fuel cell system further includes a suction device in fluid communication with at least one of the anode supply manifold and the anode exhaust manifold. The suction device adapted to selectively draw a partial vacuum on the fuel cell stack during a start-up of the fuel cell system. Methods for starting the fuel cell system are also provided.
摘要:
A thermal management device for dissipating thermal energy from a secondary battery cell includes a first plate defining a first channel and a second channel spaced apart from the first channel, wherein the first plate further defines an inlet port in communication with the first channel and an outlet port in communication with the second channel and spaced opposite the inlet port. The device includes a second plate configured for thermal energy exchange with the cell and disposed in contact with the first plate to define a cross-flow channel, wherein the cross-flow channel interconnects the first and second channels. A thermal management system includes a cell having a first temperature, a fluid having a second temperature that is less than the first temperature, and the device. The fluid is conveyable from the inlet port to the outlet port via the cross-flow channel to thereby dissipate thermal energy from the cell.
摘要:
A fluid distribution insert adapted to be received within an inlet header of a fuel cell assembly is disclosed. The fluid distribution insert includes a hollow insert with a first end and a second end. An inlet is formed at the first end of the hollow insert in fluid communication with a source of a reactant gas and adapted to receive the reactant gas therein. A plurality of outlets is formed intermediate the first end and the second end. A plurality of flow channels is formed in the hollow insert providing fluid communication between the inlet and the outlets to deliver the fluid to a plurality of fuel cells of the fuel cell assembly, wherein a total flow volume and flow resistance of each of the flow channels is substantially the same to provide for a substantially simultaneous delivery of the reactant gas to the fuel cells.
摘要:
A fuel cell system is disclosed with a fuel cell stack having a plurality of fuel cells, the fuel cell stack including an external electrical circuit adapted to control current from the fuel cell stack, a sensor for measuring at least one of an environmental condition affecting the fuel cell stack and a characteristic of the fuel cell stack, wherein the sensor generates a sensor signal representing a measurement of the sensor, and a processor for receiving the sensor signal, analyzing the sensor signal, and controlling an adaptive load applied to the external electrical circuit based upon the analysis of the sensor signal.
摘要:
A system and method of balancing a hydrogen feed for a fuel cell to optimize flow of hydrogen through the fuel cell, wherein a pressure drop through parallel feed channels and active area channels of the fuel cell is balanced.
摘要:
A primary reactor for a fuel processor system that employs steam and air to convert a liquid hydrocarbon fuel into a hydrogen-rich gas stream. The liquid fuel and an air-steam mixture are mixed in a mixing region within the reactor. The fuel mixture is then directed through an electrically heated catalyst region that heats the mixture to the operation temperature of a light-off catalyst at system start-up. The heated fuel mixture is then directed through a light-off catalyst monolith where the hydrocarbon fuel is dissociated. Once the fuel mixture is heated to the operating temperature of the light-off catalyst, the electrically heated catalyst region is turned off because the exothermic reaction in the light-off catalyst monolith generates the heat necessary to sustain the catalytic reaction.