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33results about How to "Reduce parasitic power" patented technology
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Mini-CPO providing hydrogen for hydrogen desulfurization of hydrocarbon feeds
InactiveUS20040159584A1Reduce humidityLow costHydrogenHydrogen/synthetic gas productionWater gasChemistry
A hydrogen-rich reformate gas generator, such as a mini-CPO (catalytic partial oxidizer) (36), provides warm, dry, hydrogen-containing reformate gas to a hydrogen desulfurizer (17) which provides desulfurized reformate gas to a major reformer (14) (such as a CPO) which, after processing in a water-gas shift reactor (26) and preferential CO oxidizer (27) produces hydrogen-containing reformate in a line (31) for use, for instance, as fuel for a fuel cell power plant. The expensive prior art hydrogen blower (30) is thereby eliminated, thus reducing parasitic power losses in the power plant. The drier reformate provided by the mini-CPO to the hydrogen desulfurizer favors hydrogen sulfide adsorption on zinc oxide and helps to reduce sulfur to the parts per billion level.
Owner:HYDROGENSOURCE
PEM fuel cell passive water management
InactiveUS20040258973A1Reduce parasitic powerEasy to optimizeFuel cells groupingFuel cell auxillariesFuel cellsWater flow
Water flow field inlet manifolds (33, 37) are disposed at the fuel cell stack (11) base. Water flow field outlet manifolds (34, 38) are located at the fuel cell stack top. Outlet and inlet manifolds are interconnected (41-43, 47, 49, 50) so gas bubbles leaking through the porous water transport plate cause flow by natural convection, with no mechanical water pump. Variation in water level within a standpipe (58) controls (56, 60, 62, 63) the temperature or flow of coolant. In another embodiment, the water is not circulated, but gas and excess water are vented from the water outlet manifolds. Water channels (70) may be vertical. A hydrophobic region (80) provides gas leakage to ensure bubble pumping of water. An external heat exchanger (77) maximizes water density differential for convective flow.
Owner:AUDI AG
Purification of Carbon Dioxide
InactiveUS20130111948A1Reduce power consumptionAverage power consumptionSolidificationLiquefactionAir separationNitrogen gas
Refrigeration duty in a carbon dioxide purification unit (CPU) operating at elevated pressure and sub-ambient temperature can be provided in at least a first part by indirect heat exchange against at least latent heat of at least one liquid first refrigerant, preferably carbon dioxide liquid(s) produced in the CPU, thereby typically evaporating the liquid(s), and a second part by indirect heat exchange with sensible heat energy alone of a second refrigerant. The second refrigerant may be nitrogen gas imported from an integrated cryogenic air separation unit (ASU) or carbon dioxide liquid exported from the CPU, cooled and returned to the CPU. One advantage is that total power consumption of the CPU and an integrated ASU is reduced.
Owner:AIR PROD & CHEM INC
Internal PEM fuel cell water management
InactiveUS7435502B2Improve efficiencyReduce parasitic powerFuel cells groupingWater management in fuel cellsFuel cellsLiquid water
Water transfer means (86) transfers fuel cell product water from a cathode water transport plate (34) to an anode water transport plate (23) of the same or a different fuel cell, wholly within a fuel cell stack (50), (disposed within each fuel cell of a fuel cell stack (50)). The water transfer means may be a very high permeability proton exchange membrane (21a), a water transfer band (90) such as silicon carbide particles, a porous water transfer zone (107), with or without a flow restrictor (109), internal water manifolds (112, 113) which extend through an entire fuel cell stack, or internal manifolds (112a, 112b, 112c, 112d, 113a, 113b, 113c, 113d) which extend only through groups of cells between solid plates (71). As an example, 90% product water may be removed as vapor in oxidant exhaust, 30% may be transferred through the water transfer means (86) from cathode water transport plates to anode water transport plates, of which 20% may flow from the anode to the cathode, the net result of osmosis and proton drag, and 10% may exit the anode water transport plates as liquid water.
Owner:INT FUEL CELLS
Hydrogen generator for hydrogen desulfurization of hydrocarbon feeds
InactiveUS7128768B2Reduce humidityLow costMuffle furnacesGas modification by gas mixingPower stationFuel cells
A hydrogen-rich reformate gas generator (36), such as a mini-CPO, POX, ATR or other hydrogen generator provides warm, dry, hydrogen-rich reformate gas to a hydrogen desulfurizer (17) which provides desulfurized feedstock gas to a major reformer (14) (such as a CPO) which, after processing in a water-gas shift reactor (26) and preferential CO oxidizer (27) produces hydrogen-containing reformate in a line (31) for use, for instance, as fuel for a fuel cell power plant. The expensive prior art hydrogen blower (30) is thereby eliminated, thus reducing parasitic power losses in the power plant. The drier reformate provided by the small hydrogen generator to the hydrogen desulfurizer favors hydrogen sulfide adsorption on zinc oxide and helps to reduce sulfur to the parts per billion level.
Owner:HYAXIOM INC
Fuel cell cooling system utilizing phase change cooling
ActiveCN104835976AGuaranteed temperature balanceReduce parasitic powerFuel cell heat exchangeFuel cellsComputer module
The invention discloses a fuel cell cooling system utilizing phase change cooling. The fuel cell cooling system comprises an electric pile and a cathode air supply module connected to the electric pile and used for supplying the air to the electric pile, and further comprises a cooling liquid circulating module used for cooling the electric pile and preheating the air in the cathode air supply module. The fuel cell cooling system can keep temperature balance in the electric pile, and has the advantages of small cooling flow, small parasitic power of an auxiliary system, waste heat utilization of the cooling liquid and air preheating.
Owner:KUSN FUERSAI ENERGY
Fuel cell with thermal conductance of anode greater than cathode
ActiveUS7429429B2Easy to humidifySimple configurationFuel cell auxillariesActive material electrodesPower stationFuel cells
In a fuel cell for a fuel cell power plant having a PEM (9), a cathode comprising at least a catalyst (10) and a support substrate (17), possibly with a diffusion layer (16), on one side of the PEM, and an anode comprising at least an anode support substrate (14) and an anode catalyst (11) on the opposite side of the PEM, and a porous water transport plate having reactant gas flow field channels (31, 32) (21, 28) adjacent to each of said support substrates as well as water flow channels (22) in at least one of said water transport plates, the thermal conductance of the cathode is less than about one-half of the thermal conductance of the anode, and preferably less than one-quarter of the thermal conductance of the anode, to promote flow of water from the cathode to the anode and to the adjacent water transport plate, obviating the need, in some cases, for water or reactant pressure pumps.
Owner:AUDI AG
Heavy vehicle chassis dynamometer
InactiveCN102156014AStable power lossReduce parasitic powerWork measurementTorque measurementResponse sensitivityOperability
The invention discloses a heavy vehicle chassis dynamometer. A front roller shaft, a middle roller shaft and a rear roller shaft and three left rollers and three right rollers are adopted, each rear roller has a larger diameter so as to adapt to detecting dual drive axle vehicles with different axle bases, the front and middle rollers have the same diameter and have smaller diameter than the rear rollers, and the loading torque of a power absorption device is reduced. The front rollers are main rollers, the rear rollers are free rollers and play a role in supporting only, and the power absorption device is not assembled and is not coupled to the front and middle rollers in a speed ratio way. An inertia flywheel is not assembled, equivalent inertia of a rack is reduced, the loading response sensitivity of the system is improved, and the inertia power error is reduced; moreover, the detection accuracy, operability and safety are improved.
Owner:吴明
PEM fuel cell passive water management
InactiveUS6916571B2Improve efficiencyReduce parasitic powerFuel cells groupingFuel cell auxillariesEngineeringWater transport
Water flow field inlet manifolds (33, 37) are disposed at the fuel cell stack (11) base. Water flow field outlet manifolds (34, 38) are located at the fuel cell stack top. Outlet and inlet manifolds are interconnected (41-43, 47, 49, 50) so gas bubbles leaking through the porous water transport plate cause flow by natural convection, with no mechanical water pump. Variation in water level within a standpipe (58) controls (56, 60, 62, 63) the temperature or flow of coolant. In another embodiment, the water is not circulated, but gas and excess water are vented from the water outlet manifolds. Water channels (70) may be vertical. A hydrophobic region (80) provides gas leakage to ensure bubble pumping of water. An external heat exchanger (77) maximizes water density differential for convective flow.
Owner:AUDI AG
Steam supply passive type direct methanol fuel cell with catalytic combustion type heat supplying
ActiveCN104078693AImprove performanceReduce parasitic powerFuel cell auxillariesHigh energyReaction rate
The invention discloses a steam supply passive type direct methanol fuel cell with catalytic combustion type heat supplying. The steam supply passive type direct methanol fuel cell comprises a cell reaction unit and a porous sintering plate in the cell reaction unit, wherein the cell reaction unit is sequentially connected with a steam supplying unit, a pervaporation membrane, a catalytic combustion heat supplying unit, an oxygen buffering unit, a raw material catalytic combustion unit and a sealing bottom cover. A catalytic combustion method is adopted for supplying heat to the steam supply passive type direct methanol fuel cell, the catalytic combustion has the characteristics of high energy, high efficiency, high reaction rate, and the like, and the reaction is easily controlled, reaction heat energy provides energy for the methanol phase change, high-temperature methanol fuel is provided for cell discharge, and further the output power of the cell is increased; meanwhile, the recycling of a catalytic combustion product ensures that pure methanol can be possibly supplied to cell reaction, and thus the energy density of the cell is greatly increased, and the stable long-term operation of the cell is favorably realized.
Owner:SOUTH CHINA UNIV OF TECH
Fuel cell system and fuel supply unit used therein
InactiveUS20050164065A1Improve system efficiencyReduce parasitic powerReactant parameters controlFuel cells groupingElectrochemical responseElectricity
A fuel cell system includes at least one electricity generator which generates electric energy through electrochemical reaction between hydrogen and oxygen, a fuel supply unit which supplies fuel containing hydrogen to the electricity generator, and an oxygen source which supplies oxygen to the at least one electricity generator. The fuel supply unit comprises an outer tank defining an inner space, and an inner fuel storage tank with deformable walls which is provided in the inner space of the outer tank to store fuel. Fuel is discharged from the inner fuel storage tank by the deformation of the inner fuel storage tank by applying a compressive force to the inner space of the outer tank through the use of a biasing mechanism.
Owner:SAMSUNG SDI CO LTD
Two-stage centrifugal compressor for fuel cell
InactiveCN111878423AIncrease output powerReduce power consumptionPump controlPump installationsAir compressionTurbine wheel
The invention discloses a two-stage centrifugal compressor for a fuel cell. The compressor comprises a turbine, a motor, a high-pressure-stage gas compressor, a low-pressure-stage gas compressor, a connecting pipeline and a fuel cell stack. One end of a motor spindle is connected with a high-pressure impeller, and the other end of the motor spindle is connected with a low-pressure impeller; the connecting pipeline is located between an air outlet of the low-pressure-stage gas compressor and an air inlet of the high-pressure-stage gas compressor, and an air outlet of the high-pressure-stage gascompressor is connected with a cathode gas inlet of the fuel cell stack; and an air inlet of the turbine is connected with a cathode air outlet of the fuel cell stack, and the turbine and the high-pressure stage gas compressor are machined into a whole. The turbine uses waste gas exhausted by combustion of the fuel cell to drive the high-pressure-stage gas compressor to compress sucked air through transmission of a rotating shaft, the power consumption of the high-pressure-stage gas compressor is reduced, the parasitic power of a fuel cell system is reduced, and the output power of the fuel cell is improved; and a turbine impeller and high-pressure-stage gas compressor impeller backward integrated machining scheme is adopted, the size and the weight of the system are reduced, and the purpose that the system is compact is achieved.
Owner:XECA TURBO TECH (BEIJING) CO LTD
Drainage solenoid valve, fuel cell cold start system and cold start method
ActiveCN111692406AAvoid enteringTo achieve the effect of breaking the iceDiaphragm valvesOperating means/releasing devices for valvesFuel cellsSolenoid valve
The invention relates to a drainage solenoid valve, a fuel cell cold start system and a cold start method. The drainage solenoid valve is characterized in that diaphragms are arranged between a fluidinlet runner and a fluid outlet runner of the drainage solenoid valve and a valve rod, and the diaphragms prevent fluid of the fluid inlet runner and the fluid outlet runner from entering a sliding gap formed between the valve rod and a valve seat. The cold start system comprises a hydrogen cylinder, a pressure reducer, a proportional valve, an ejector, a pressure sensor, a galvanic pile, a hydrogen circulating pump, a water segregator, an exhaust pipe and a controller. The cold start method comprises the steps that 1, the controller judges whether the fuel cell is below 0 DEG C or not, and ifyes, the step S2 is executed; and 2, the controller opens the drainage solenoid valve and periodically adjusts the pressure of hydrogen entering the galvanic pile, the controller records the pressurechange period T of the pressure sensor, and whether cold start is carried out or not is judged through judging the period T. Compared with the prior art, the cost is reduced, the complexity is reduced, and the cold start time is shortened.
Owner:TONGJI UNIV
Bipolar plate, fuel cell stack comprising same, and power generation system
InactiveCN110112434AFacilitated DiffusionEasy dischargeMotive system fuel cellsCollectors/separatorsFuel cellsCooling effect
The invention discloses a bipolar plate, a fuel cell stack comprising the same, and a power generation system. The bipolar plate includes a first polar plate and a second polar plate, wherein the first polar plate has a first face and a second face, and the second polar plate has a third face and a fourth face. The first face of the first polar plate has a first flow channel and a first referenceface, and the third surface of the second polar plate is provided with a third runner and a third reference surface. In the bipolar plate, the second surface of the first polar plate is attached to the fourth surface of the second polar plate, and the first surface of the first polar plate and the third surface of the second polar plate have different flow fields. The bipolar plate also comprisesat least two synchronous fluctuating areas which are channels for leading a cooling agent in and out of a bipolar plate interlayer. A cooling agent guide dike is arranged on the second polar plate andcan guide the cooling agent to flow according to a set route. Due to the characteristics, the bipolar plate has the advantages of good drainage performance, good cooling effect and the like.
Owner:张国胜 +1
Hydrogen generator for hydrogen desulfurization of hydrocarbon feeds
InactiveUS20040159585A1Reduce humidityLow costMuffle furnacesGas modification by gas mixingPower stationFuel cells
A hydrogen-rich reformate gas generator (36), such as a mini-CPO, POX, ATR or other hydrogen generator provides warm, dry, hydrogen-rich reformate gas to a hydrogen desulfurizer (17) which provides desulfurized feedstock gas to a major reformer (14) (such as a CPO) which, after processing in a water-gas shift reactor (26) and preferential CO oxidizer (27) produces hydrogen-containing reformate in a line (31) for use, for instance, as fuel for a fuel cell power plant. The expensive prior art hydrogen blower (30) is thereby eliminated, thus reducing parasitic power losses in the power plant. The drier reformate provided by the small hydrogen generator to the hydrogen desulfurizer favors hydrogen sulfide adsorption on zinc oxide and helps to reduce sulfur to the parts per billion level.
Owner:HYAXIOM INC
Bipolar plate, fuel cell stack and power generation system comprising bipolar plate
PendingCN110492126AFacilitated DiffusionEasy dischargeMotive system fuel cellsCollectors/separatorsFuel cellsCooling effect
Owner:张国胜 +1
A fuel cell heat dissipation system using phase change cooling
ActiveCN104835976BGuaranteed temperature balanceReduce parasitic powerFuel cell heat exchangeFuel cellsPhase change
The invention discloses a fuel cell cooling system utilizing phase change cooling. The fuel cell cooling system comprises an electric pile and a cathode air supply module connected to the electric pile and used for supplying the air to the electric pile, and further comprises a cooling liquid circulating module used for cooling the electric pile and preheating the air in the cathode air supply module. The fuel cell cooling system can keep temperature balance in the electric pile, and has the advantages of small cooling flow, small parasitic power of an auxiliary system, waste heat utilization of the cooling liquid and air preheating.
Owner:KUSN FUERSAI ENERGY
Fuel cell system
InactiveUS7758987B2Reduce parasitic powerSmall and compactReactant parameters controlRegenerative fuel cellsElectricityElectrochemical response
A fuel cell system includes at least one electricity generating element to generate electrical energy through an electrochemical reaction of hydrogen and oxygen, and a reaction source supplier adapted to connect to the electricity generating element and to provide a hydrogen-containing fuel and oxygen-containing air to the electricity generating element. The reaction source supplier includes a first divided region for storing compressed air, a second divided region for storing the fuel, and a storage region having an elastic partition adapted to divide the adjacent first and second divided regions.
Owner:SAMSUNG SDI CO LTD
Fuel cell in combined heat and electric power system
InactiveUS20060137350A1Eliminate needReduce parasitic powerFuel cells groupingFuel cell auxillariesFuel cellsPower station
A fuel cell system having a fuel cell stack (9) employs a group of fuel cells between corresponding cooler plates (55). The system utilizes single phase coolant, the outflow of the coolant plates (55) being divided into a flow (78) just sufficient to provide adequate steam (68, 79) to a fuel reformer (58), the remainder of the coolant outlet flowing (76) directly to heat recovery and utilization apparatus (77), which may include fuel cell power plant accessories (85), such as chillers or boilers.
Owner:CLEAREDGE POWER CORP
Two-stage centrifugal compressor for fuel cell
PendingCN113323893AIncrease output powerReduce power consumptionPump controlPump installationsAir compressionTurbine wheel
The invention discloses a two-stage centrifugal compressor for a fuel cell. The compressor comprises a turbine, a motor, a high-pressure-stage gas compressor, a low-pressure-stage gas compressor, a connecting pipeline and a fuel cell stack, one end of a motor main shaft is connected with a high-pressure impeller, the other end of the motor main shaft is connected with a low-pressure impeller, the connecting pipeline is positioned between a gas outlet of the low-pressure-stage gas compressor and a gas inlet of the high-pressure-stage gas compressor, the gas outlet of the high-pressure-stage gas compressor is connected with a cathode gas inlet of the fuel cell stack, a turbine air inlet is connected with a fuel cell stack cathode air outlet, and a turbine and a high-pressure-stage air compressor are machined into a whole. The turbine drives the high-pressure-stage gas compressor to compress sucked air by utilizing waste gas exhausted by combustion of the fuel cell and transmission of a rotating shaft, the power consumption of the high-pressure-stage gas compressor is reduced, the parasitic power of a fuel cell system is reduced, and the output power of the fuel cell is improved; and the back-to-back integrated machining scheme of the turbine impeller and the high-pressure-stage gas compressor impeller is adopted, the size and the weight of the system are reduced, and the purpose that the system is compact is achieved.
Owner:XECA TURBO TECH (BEIJING) CO LTD
Static pressure transmission system of eight-wheel vehicle
InactiveCN103419627ARealize time-sharing driveAdvanced technologyBraking action transmissionControl devicesSynchronous controlControl valves
The invention discloses a static pressure transmission system of an eight-wheel vehicle. The static pressure transmission system of the eight-wheel vehicle comprises a stepless speed regulating system, a static pressure transmission synchronous drive system, a static pressure transmission time-share drive system and a brake system. The stepless speed regulating system comprises a main oil way driven by a duplex plunger variable pump, a control oil way driven by an oil compensation pump, a controller and a sensor. The static pressure transmission synchronous drive system comprises a left side splitter and a right side splitter, wherein the left side splitter and the right side splitter are connected with the duplex plunger variable pump. The static pressure transmission time-share drive system comprises a drive switch valve, an oil controlled valve and a cartridge valve. The brake system comprises hydraulic brakes integrated on motors at the two ends. Through the fact that the stepless speed regulating system, the time-share drive system, the synchronous control system and the parking brake system are designed, the static pressure transmission system of the eight-wheel vehicle effectively solves the problems of synchronous control, power matching and stepless speed regulating in the application of the static pressure technology in transmission systems of vehicles.
Owner:ARCHITECTURAL ENG INST GENERAL LOGISTICS DEPT P L A
Driving control system and method for independent electric drive loading machine additionally provided with clutch
PendingCN114834262AReduce wasteReduce parasitic powerSpeed controllerElectric devicesReduction driveControl system
The invention provides a drive control system and method for an independent electric drive loading machine with a clutch, the drive control system of the loading machine is additionally provided with two main speed reducers through a front axle and a rear axle, is additionally provided with two motors through the front axle and the rear axle, is additionally provided with a clutch between the two motors, and is additionally provided with a hub speed reducer on each wheel. According to the invention, different values are given to the required torques of the two motors through the separation and combination of the clutch and the two motors under different working conditions of the loader, so that the two motors work with different driving forces, the four-wheel drive working requirements of the loader are met, the parasitic power is reduced to the greatest extent, and the use efficiency of the motors and the reasonable distribution of resources are improved.
Owner:HUAIAN COLLEGE OF INFORMATION TECH
Internal cascade solid oxide fuel cell stack with high fuel utilization rate
ActiveCN111952632AImprove net power generation efficiencyReduce the temperatureFuel cell heat exchangeReactant parameters controlFuel cellsMechanical engineering
The invention relates to an internal cascade solid oxide fuel cell stack with a high fuel utilization rate. Fuel is input into an internal primary stack through a main fuel supply pipeline; air is input into the inner primary galvanic pile and the inner secondary galvanic pile through the air inlet; tail gas of the inner primary galvanic pile enters the inner secondary galvanic pile through a cascade circulation loop; fuel is supplemented to the inner secondary electric pile through an auxiliary fuel supply pipeline; and the inner secondary galvanic pile exhausts tail gas through a tail gas exhaust pipeline. The cascade loop is additionally arranged, so that the fuel utilization rate is increased; the inner primary galvanic pile in the middle position is additionally arranged, it is ensured that partial reforming reaction occurs in the inner primary galvanic pile by managing fuel gas components in the main fuel supply pipeline, the uniformity of the internal temperature field of the galvanic pile is improved, the internal temperature of the galvanic pile is reduced, and the parasitic power of a draught fan is reduced; and an auxiliary fuel supply pipeline is additionally arranged,so that the temperature of mixed fuel entering the internal secondary electric pile and the controllability of gas components are improved.
Owner:TSINGHUA UNIV
A fuel cell thermal management system and method for a passenger car
ActiveCN113054220BTemperature controlStable outputFuel cell heat exchangeMotive system fuel cellsThermodynamicsFuel cells
The invention discloses a passenger car fuel cell thermal management system and method. The thermal management system includes a controller, a fuel cell, an inlet temperature sensor, an outlet temperature sensor, a PTC heater, a warm air core, a first water pump, Electric control three-way valve, deionizer, radiator, second water pump and intercooler; the heat management method includes the heat management process in the shutdown mode of the fuel cell, the heat management process in the cold start mode, and the low power operation The thermal management process in the mode and the thermal management process in the high-power working mode. The invention can make the fuel cell start quickly and avoid the failure of the fuel cell cold start.
Owner:深蓝汽车科技有限公司
Fuel cell in combined heat and electric power system
InactiveUS7100376B2Facilitates heat recoveryReduce parasitic powerFuel cells groupingFuel cell auxillariesFuel cellsPower station
Owner:CLEAREDGE POWER CORP
Fuel cell power generation system
ActiveCN110620249AReduce parasitic powerReactant parameters controlWater management in fuel cellsFuel cellsProduct gas
The invention discloses a power generation system. The power generation system comprises a fuel cell power generation device, a cathode gas supply module, an anode gas supply module and a tail gas circulation device, wherein the fuel cell power generation device is provided with a gas inlet side, a tail gas side, an anode unit and a cathode unit, the cathode gas supply module is coupled with the cathode unit on the gas inlet side and is used for supplying the first gas required by reaction of the cathode unit, the anode gas supply module is coupled with the anode unit on the gas inlet side andis used for supplying the second gas required by reaction of the anode unit, the tail gas circulation device is coupled with the anode and cathode units on the tail gas side and is coupled with the anode unit on the gas inlet side, the tail gas circulation device is used for receiving the first tail gas exhausted by the anode unit on the tail gas side and the second tail gas exhausted by the cathode unit, and the tail gas circulation device generates power for circulating the first tail gas through the second tail gas, so the first tail gas can flow back to the anode unit.
Owner:谷夫科技(上海)有限公司
A fuel cell bipolar plate with imitation lung multilayer structure and its realization method
ActiveCN112054225BAvoid reverse flowExtended service lifeFuel cellsElectrochemical responseFuel cells
The invention discloses a fuel cell bipolar plate with an imitation lung multilayer structure and a realization method thereof. The present invention adopts the lung imitation multi-layer structure bipolar plate design, including gas distribution layer, directional blowing layer and drainage layer; the reaction gas enters the gas distribution layer through the air inlet pump, and conducts the gas step by step through the four-stage gas transmission unit. Make the gas enter the gas diffusion layer evenly and with the largest area to participate in the battery reaction, and enhance the uniformity of mass transfer; The mass component compresses the gas into the gas diffusion layer to participate in the electrochemical reaction inside the battery, and the drainage component purges the accumulated water inside the channel. Combined with the designed rectangular flow channel and the inclined bottom surface with an inclination angle β at the bottom of the flow channel, the The discharge of the generated water avoids the blockage of the droplets inside the battery, comprehensively improves the performance of the fuel cell in terms of uniform mass transfer and rapid drainage, and thus improves the overall performance of the fuel cell.
Owner:JILIN UNIV
A drain solenoid valve, fuel cell cold start system and cold start method
ActiveCN111692406BAvoid enteringTo achieve the effect of breaking the iceDiaphragm valvesOperating means/releasing devices for valvesFuel cellsSolenoid valve
The invention relates to a drain solenoid valve, a fuel cell cold start system and a cold start method. A diaphragm is arranged between the fluid entry channel and the fluid discharge channel of the drain solenoid valve and the valve stem, and the diaphragm prevents the fluid from entering the flow channel and fluid discharge The fluid in the runner enters the sliding gap formed between the valve stem and the valve seat; the cold start system includes a hydrogen bottle, a pressure reducer, a proportional valve, an ejector, a pressure sensor, an electric stack, a hydrogen circulation pump, a water separator, and a drain Gas pipe and controller; the cold start method includes: Step 1: The controller judges whether the fuel cell is below 0°C, and if so, executes Step S2; Step 2: The controller opens the drain solenoid valve and periodically adjusts the hydrogen pressure entering the stack , the controller records the pressure change period T of the pressure sensor, and judges whether to perform a cold start by judging the period T. Compared with the prior art, the cost and complexity are reduced, and the cold start time is reduced.
Owner:TONGJI UNIV
A Steam-fed Passive Direct Methanol Fuel Cell with Catalytic Combustion for Heating
ActiveCN104078693BImprove performanceReduce parasitic powerFuel cell heat exchangeReaction rateHigh energy
The invention discloses a steam supply passive type direct methanol fuel cell with catalytic combustion type heat supplying. The steam supply passive type direct methanol fuel cell comprises a cell reaction unit and a porous sintering plate in the cell reaction unit, wherein the cell reaction unit is sequentially connected with a steam supplying unit, a pervaporation membrane, a catalytic combustion heat supplying unit, an oxygen buffering unit, a raw material catalytic combustion unit and a sealing bottom cover. A catalytic combustion method is adopted for supplying heat to the steam supply passive type direct methanol fuel cell, the catalytic combustion has the characteristics of high energy, high efficiency, high reaction rate, and the like, and the reaction is easily controlled, reaction heat energy provides energy for the methanol phase change, high-temperature methanol fuel is provided for cell discharge, and further the output power of the cell is increased; meanwhile, the recycling of a catalytic combustion product ensures that pure methanol can be possibly supplied to cell reaction, and thus the energy density of the cell is greatly increased, and the stable long-term operation of the cell is favorably realized.
Owner:SOUTH CHINA UNIV OF TECH
Fuel Cell Power Generation System
ActiveCN110620249BReduce parasitic powerReactant parameters controlWater management in fuel cellsFuel cellsEngineering
The invention discloses a power generation system. The power generation system comprises a fuel cell power generation device, a cathode gas supply module, an anode gas supply module and a tail gas circulation device, wherein the fuel cell power generation device is provided with a gas inlet side, a tail gas side, an anode unit and a cathode unit, the cathode gas supply module is coupled with the cathode unit on the gas inlet side and is used for supplying the first gas required by reaction of the cathode unit, the anode gas supply module is coupled with the anode unit on the gas inlet side andis used for supplying the second gas required by reaction of the anode unit, the tail gas circulation device is coupled with the anode and cathode units on the tail gas side and is coupled with the anode unit on the gas inlet side, the tail gas circulation device is used for receiving the first tail gas exhausted by the anode unit on the tail gas side and the second tail gas exhausted by the cathode unit, and the tail gas circulation device generates power for circulating the first tail gas through the second tail gas, so the first tail gas can flow back to the anode unit.
Owner:谷夫科技(上海)有限公司
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