CN105261769B - Hydrogen power supply based on metal double polar plates - Google Patents
Hydrogen power supply based on metal double polar plates Download PDFInfo
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- CN105261769B CN105261769B CN201410335120.7A CN201410335120A CN105261769B CN 105261769 B CN105261769 B CN 105261769B CN 201410335120 A CN201410335120 A CN 201410335120A CN 105261769 B CN105261769 B CN 105261769B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention provides a kind of hydrogen power supply of high-energy-density, including：Metal bipolar plate fuel battery, the power output end of metal bipolar plate fuel battery is connected with a blower fan, the blower fan is located at the cathode flow channels side of the metal bipolar plate fuel battery, for making Forced Air Convection pass through fuel battery negative pole, and supply reaction air and cooling air needed for fuel cell power generation, so simplifying structure, the overall total amount of metal bipolar plate fuel battery is reduced, and then improves energy density.Power-supply system energy density and specific energy are high, respectively reach 650W.h/L and more than 700W.h/kg；Power system structure is compact, high efficient and reliable；Power-supply system long lifespan, can reach more than 3000 hours.
Description
Technical field
The invention belongs to Proton Exchange Membrane Fuel Cells technical field, specifically a kind of hydrogen electricity based on metal double polar plates
Source.
Background technology
Proton Exchange Membrane Fuel Cells（PEMFC）Directly the chemical energy in fuel is converted into by electrochemical reaction mode
Electric energy, the advantage with high-efficiency environment friendly.PEMFC operation principle is：Fuel gas and oxygen are led to by the gas in bipolar plates
Road arrives separately at the anode and negative electrode of battery, and Catalytic Layer is reached by the diffusion layer on membrane electrode assembly (MEA).In the anode of film
Side, hydrogen is dissociated into proton hydrate and electronics on anode catalyst surface, and proton hydrate passes through the sulfonic acid on PEM
Base（-SO3H）It is delivered to up to negative electrode, and electronics is then flowed through by external circuit and loaded to up to negative electrode.In the catalyst surface of negative electrode,
Oxygen molecule combines the proton hydrate and electronics passed over from anode, generates hydrone.In this process, proton will carry water
Molecule is delivered to negative electrode from anode, and negative electrode also generates water, and water is excluded from negative electrode.Because the conduction of proton will rely on water, proton membrane
Wetness degree have very big influence to its electric conductivity, so needing to humidify reacting gas.The single-unit of fuel cell
Operating voltage is generally 0.6 ~ 0.7V, to obtain useful voltage and high power, it is necessary to by more piece cells in series formation pile,
Meet high-power use demand.Proton exchange film fuel cell electric piling must under certain conditions the good efficiency of competence exertion with
Reliable work is realized, these conditions include：Temperature is controlled 80oBelow C（Cooling system）, keep PEM locate all the time
In wetting state（Humidification system）, the sufficient air of supply（Or oxygen）And hydrogen（Air supply system and hydrogen supply system
System）.Because the fuel that PEMFC work is used is flammable explosive gas（Hydrogen）, to prevent contingency, it is necessary to be equipped with alarm
System and fire extinguishing system.Meanwhile, to control PEMFC input and output, and each system coordination work, it is necessary to set up
Kind control system.Therefore, all these support systems be PEMFC efficiently, the necessary condition of steady operation.
Chinese invention patent CN200610121862.5 disclose it is a kind of can be according to the fuel cell of loaded work piece, it is needed
Air is humidified, while using air pump, the weight and cost of fuel cell system are greatly increased.Chinese invention patent
CN86100407 discloses a kind of fuel cell power system, including the fuel that hydrocarbon fuel is converted into hydrogen-rich combustion gas is adjusted and filled
Put and the fuel gas reforming fuel cell unit for electric energy.The power-supply system equipped with reforming hydrogen production device, heat exchanger, air blower,
The large-scale subsidiary engine such as coolant circulating pipeline, system is sufficiently complex.Chinese invention patent CN200810204755.8 discloses one kind
The standby power system that fuel cell is constituted with energy-storage battery, the system includes fuel cell and large-scale energy-storage battery, causes electricity
Source control is complicated, system cost is higher, not easily shifted application.
In a word, current fuel cell system volume and weight is all larger（Energy density less than 250W.h/L, specific energy less than
300W.h/kg）, system architecture complexity, it is difficult to portable use.
Connect two adjacent cell partitions referred to as bipolar plates, bipolar plates not only need into pile electrode provide reactant and
Electric current is conducted between adjacent two electrode, but also is responsible for the effect of discharge battery generation water and reaction heat.
High cost is that current PEMFC is difficult to the principal element that large-scale commercial is applied, and relatively low gravimetric specific power
It is also its big obstacle in portable power source application aspect with volumetric specific power.Bipolar plates account for whole pem fuel electricity
The 70%~80% of pond gross weight, cost accounts for the 40~50% of totle drilling cost.Reduce Proton Exchange Membrane Fuel Cells cost and
Power output is improved, in addition to improving three in one membreane electrode component, reduction platinum content or selecting the alternative metals of platinum, is mainly set
Method selects suitable plate material, flow field structure, rational preparation technology, to reduce the internal resistance of battery, improves battery output effect
Rate, improves battery performance.Therefore, seek and design inexpensive, light weight, plate it is thin, with good mechanical property, high surface and body
Product electrical conductivity, low-permeable, resistant material and lower-cost technology of preparing are the targets of bipolar plates development.
At present, bipolar plates mainly have carbon graphite bipolar plates, composite dual-electrode plates and metal double polar plates three types.Metal is double
Pole plate is because with good conduction, thermal conduction characteristic, pliability and workability, being taken seriously and having paid close attention to.With graphite and again
Condensation material is compared, and airtight sex chromosome mosaicism is not present in metal, even and if metallic plate makes very thin it is also ensured that good machinery is strong
Degree, thus pile volume and weight can be greatly reduced, simultaneously because metal has higher thermal conductivity, pile internal temperature ladder
Degree is small, is also beneficial to improve the uniformity of pile internal temperature.Therefore sheet metal such as stainless steel plate punch forming system is utilized
Standby bipolar plates, are research in recent years focuses.
The open fuel cell metal double polar plates of such as Chinese patent application 201110236288.9, in cathode and anode monopole
Plate both sides are provided with three chamber common-use tunnels, and middle part sets DC fields runner, distribution runner and imports and exports runner, and DC fields runner is by parallel
Projection and groove composition, distribution runner section is made up of the channelizing island arranged by rule and the reversely raised strong point.
Chinese patent application 200710140168.2 discloses a kind of fuel cell metal double polar plates, in plate-shape metal base
Being prepared on piece has passivated metal layer and layer of precious metal, and metal double polar plates have at least in the area of the electrode towards septum electrode component
The jog formed in domain, two surfaces of metal double polar plates have respectively the surface of the contact with the electrode contact and not with
The non-planar contact surfaces of the electrode contact.
Chinese patent application 201010288870.5 discloses a kind of stamping forming fuel battery metal double polar plate, including
First metallic plate and the second metallic plate, two plate reverse side pass through laser welding.First metallic plate front sets sealing platform area, two plates
Interrupted corner guiding gutter is set between flow field runner and each gas inlet and outlet, and two plate cooling water outlet and inlet neighboring areas set strip
Connected in star.
Thin metal dual-pole board of proton exchange film fuel battery disclosed in Chinese patent literature CN1996647, in yin, yang pole plate
Between omit coolant flow field, reduce package thickness, cathode and anode flow field only make use of a side runner, and cathode flow field is both as reaction
Flow channel also serves as cooling air-flow road.
Simultaneously as Proton Exchange Membrane Fuel Cells is in the internal environment of moist acid and higher temperature, therefore metal
Bipolar plates must improve its surface conductivity and corrosion resistance by process for modifying surface.At present frequently with method include PVD,
CVD, plating and coating treatment.In a word, large-scale application also up to the present is able to without a kind of metal double polar plates, metal is double
Performance, life-span and the cost of pole plate fuel cell pile are also not reaching to commercialization index.Therefore, being badly in need of exploitation good conductive
Property, high corrosion-resistant and low cost fuel battery metal double polar plate.
The content of the invention
The invention solves the problems that first technical problem be to provide simple in construction, high-energy-density hydrogen power supply.
In order to solve the above technical problems, the invention provides a kind of hydrogen power supply, including：Metal bipolar plate fuel battery, gold
The power output end of category bipolar plate fuel battery is connected with a blower fan, and the blower fan is located at the moon of the metal bipolar plate fuel battery
Pole runner side, for making Forced Air Convection by fuel battery negative pole, and supplies fuel cell power generation required reaction air
And cooling air, so simplifying structure, the overall total amount of metal bipolar plate fuel battery is reduced, and then it is close to improve energy
Degree.
It is preferred that scheme be：Power output end of the blower fan through DC/DC circuits Yu the metal bipolar plate fuel battery
It is connected, blower fan is aerofoil fan.
Further preferred scheme is：The air inlet of the metal bipolar plate fuel battery is automatically controlled through a closed type successively
Valve, pressure-reducing valve are connected with hydrogen source, and the exhaust outlet of metal bipolar plate fuel battery is provided with open type electrically-controlled valve；The hydrogen of hydrogen source release
Gas enters metal double polar plates fuel cell after closed type electrically-controlled valve, is discharged finally by open type electrically-controlled valve；It is blower fan, normally closed
Type electrically-controlled valve and open type electrically-controlled valve are connected with a controller；Controller is also used to measure metal bipolar plate fuel battery temperature with one
The temperature sensor of degree is connected；Controller is according to the rotating speed of the temperature control blower fan measured.
Further preferred scheme is：The charged circuit of power output end of the metal bipolar plate fuel battery and an electricity
Pond is connected, and the battery is connected with the blower fan, closed type electrically-controlled valve, open type electrically-controlled valve and controller.
The of the invention technical problem further to be solved is to provide that a kind of cost is relatively low, technique is more simple and environmentally-friendly and uses
The production method of the hydrogen power supply lasted a long time.
For that can reach above-mentioned purpose, the production method of hydrogen power supply of the invention includes the preparation technology of metal double polar plates,
It includes：
1）, bipolar plates are made using titanium-based metal；
2）, by above-mentioned bipolar plates（It is preferred that under pure oxygen environment）200 DEG C ~ 600 DEG C are heated to, to be made on bipolar plate surfaces
Standby one layer of TiO2；
3）, by above-mentioned bipolar plates in inert gas（Such as N2, argon gas）When 500 ~ 1100 DEG C are heated in atmosphere, it is passed through
The mixed gas of hydrogen and hydrocarbon fuel, makes TiO2 layers to be changed into TiC layer.Wherein, it is incubated at least 0.5h.
Further preferred scheme is:The titanium-based metal is titanium or titanium alloy metal skin（Further preferably, the metal
Skin thickness is 0.03 ~ 0.1mm, and the integral thickness of its bipolar plates being made is 1mm ~ 4mm）.It is made of titanium-based metal described double
The preparation technology of pole plate includes：1）Titanium or titanium alloy metal skin are prepared for the parallel of reacting gas distribution by method for stamping
Runner, forms unipolar plate.Parallel fluid channels are from one end of pole plate to other end insertion, without seal groove on pole plate；2）By a piece of titanium
Or titanium alloy skin is prepared into bipolar plates with the above-mentioned unipolar plate with flow field by spot welding method, or above-mentioned two panels unipolar plate passes through
Spot welding method is prepared into bipolar plates.
High conductivity and corrosion proof titanium carbide on the bipolar plate surfaces（TiC）The thickness of layer is 1 ~ 50 μm, corrosion
Electric current is less than 1 μ A/cm2, area specific resistance is less than 10 Ω .cm2, hydrogen gas permeation coefficient is less than 2 × 106cm3/(sec.cm2.Pa)。
One proton exchanging film fuel battery, it includes the metal double polar plates being prepared into using above-mentioned preparation technology.
The present invention is with following outstanding feature and prominent advantage：
（1）In the present invention, power-supply system energy density and specific energy are high, respectively reach 650W.h/L and 700W.h/kg
More than；Power system structure is compact, high efficient and reliable；Power-supply system long lifespan, can reach more than 3000 hours.Metal double polar plates fire
Expect that battery produces electric energy using the natural air in hydrogen and cathode flow channels, aerofoil fan, tail gas are supplied after DC/DC voltage stabilizings
Electrically-controlled valve（Open type）And lithium ion battery, aerofoil fan makes Forced Air Convection pass through fuel cell under fuel cell-powered
Negative electrode, reaction air and cooling air needed for supply fuel cell power generation.In operation of fuel cells, controller is to axle stream wind
Fan, electrically-controlled valve etc. control effectively, and stable fuel cell is reliably generated electricity.The rotating speed of aerofoil fan is deposited with pile running temperature
In control logic relation, tail gas electrically-controlled valve（Open type）By some cycles pulse emission, running into emergency circumstances, air inlet
Electrically-controlled valve is closed.In hydrogen power supply of the present invention, provided with one piece of miniature lithium ion battery, it is that controller and air inlet are automatically controlled that its effect, which is,
Valve provides electric energy, is charged by fuel cell.Electric energy needed for load is only provided by fuel cell.
（2）TiC layer is modified using the surface in situ redox of low cost and is directly prepared from.First on Titanium base surface
On directly obtain TiO2Layer, in fuel gas carbonisation, carbon atom and TiO2Reaction form finer and close TiC layer, the layer
With Titanium base formation chemical bond, belong to integral structure, adhesion is strong（Its adhesion is better than as in patent document CN101604756A
Disclosed TiC layer）.The TiC layer generation scheme of the present invention, cost is relatively low, environmental protection（Without discharge, without waste residue）, service life is longer
（Up at least 5000 hours, the service life of conventional metals bipolar plates was to be shorter than 2000 hours）, Titanium base surface is successively generated
TiO2Layer, TiC layer realize that technique is simple, with low cost, can be mass using " one kettle way ".The surface of the present invention is modified
Technology can significantly increase the corrosion resistance of metal double polar plates in the case where ensureing metal double polar plates mechanical performance.The present invention
It may advantageously facilitate the extensive use of dual polar plates of proton exchange membrane fuel cell.The pile of metal double polar plates composition of the present invention is adopted
With low-pressure air as oxidant and cooling agent, aerofoil fan supply low-pressure air can be used, is supplied without air compressor high
Calm the anger body, without water-cooling system so that fuel cell generation is greatly simplified, and reduce electricity generation system cost.And
Metal double polar plates use ultra-thin titanium or titanium alloy material, and bipolar plates use parallel channels, the new construction without seal groove of insertion,
This causes the volumetric power density and specific power of fuel cell pile electricity generation system to greatly improve, and can be higher than conventional metals bipolar plates
As many as one times.
Brief description of the drawings
Fig. 1 is the structural representation of the hydrogen power supply of the present invention, reference therein：1st, metal bipolar plate fuel battery,
2nd, hydrogen source, 3, pressure-reducing valve, 4, controller, 5, lithium ion battery, 6, aerofoil fan, 7, air inlet electromagnetic valve（Closed type）, 8, tail gas
Magnetic valve（Open type）, 9, DC/DC circuits, 10, temperature sensor；
Fig. 2 is fuel battery double plates performance comparision.
Embodiment
Embodiment 1
Such as Fig. 1, a kind of hydrogen power supply includes：Metal bipolar plate fuel battery 1, hydrogen source 2, pressure-reducing valve 3, controller 4, lithium ion
Battery 5, aerofoil fan 6, air inlet electromagnetic valve（Closed type）7th, tail gas magnetic valve（Open type）8th, DC/DC circuits 9, temperature sensor
10。
The hydrogen that hydrogen source 2 discharges depressurizes by pressure-reducing valve 3 and passes through air inlet electromagnetic valve（Closed type）Enter metal after 7 double
Pole plate fuel cell 1, finally by tail gas magnetic valve（Open type）8 discharges.Metal bipolar plate fuel battery 1 utilizes hydrogen and the moon
Natural air in the runner of pole produces electric energy, and aerofoil fan 6, tail gas magnetic valve are supplied after the voltage stabilizing of DC/DC circuits 9（It is normally opened
Type）8 and lithium ion battery 5, aerofoil fan 6 makes Forced Air Convection pass through fuel battery negative pole under the power supply of fuel cell 1, supplies
Fuel cell 1 is answered to react air and cooling air needed for generating electricity.
In operation of fuel cells, controller 4 control effectively to aerofoil fan 6, described magnetic valve etc., makes fuel
Battery is reliable and stable to generate electricity.There is control logic relation, tail gas electromagnetism with the running temperature of fuel cell 1 in the rotating speed of aerofoil fan 6
Valve（Open type）8 press some cycles pulse emission, are running into emergency circumstances, air inlet electromagnetic valve 7 is closed.In hydrogen of the present invention
In power supply, provided with one piece of miniature lithium ion battery 5, it is that controller 4 and air inlet electromagnetic valve 7 provide electric energy that its effect, which is, by fuel
Battery 1 is charged.Electric energy needed for load is only provided by fuel cell 1.
Its control method is：The temperature signal of metal bipolar plate fuel battery 1 is detected using temperature sensor 10
With and to the fan blade speed automation of aerofoil fan 6.As 30 DEG C of 1 operating temperature ＜ of metal bipolar plate fuel battery, axle stream wind
Fan 6 is closed；When metal bipolar 1 operating temperature >=30 DEG C of plate fuel battery, aerofoil fan 6 is idle；Work as metal double polar plates
When operating temperature >=45 DEG C of fuel cell 1 are spent, the rotating speed of aerofoil fan 6 reaches maximum；When metal bipolar plate fuel battery 1 works
When temperature is spent more than 60 DEG C, controller 4 starts alarm；When 65 DEG C of 1 operating temperature ＞ of metal bipolar plate fuel battery spends, control
Device 4 interrupts hydrogen by air inlet electromagnetic valve 7 to be supplied, and metal bipolar plate fuel battery 1 is stopped.
The hydrogen power supply of high-energy-density of the present invention use metal bipolar plate fuel battery, specific power 700W/kg with
On, rather than graphite bi-polar plate fuel battery.Conventional graphite bipolar plate fuel battery has relatively low gravimetric specific power and volume
Specific power, is its big obstacle in portable power source application aspect.And metal double polar plates have inexpensive, light weight, plate it is thin, with good
Good mechanical property, high surface and volume conductance advantage, makes fuel cell gravimetric specific power and estimates long-pending specific power to carry significantly
Rise, be particularly suitable for portable use.Hydrogen source of the present invention refers to liquid hydrogen, high purity carbon fiberreinforced high-pressure hydrogen storing or live hydrogen manufacturing such as
Sodium borohydride, calcium hydride, the hydrolytic hydrogen production of magnesium hydride, hydrogen storage mass ratio are more than 5%.
Embodiment 2
A kind of hydrogen power supply described in embodiment 1, wherein, the preparation of the metal double polar plates of the metal bipolar plate fuel battery
Technique, including：1）By titanium skin（Pure titanium skin）The parallel fluid channels being distributed for reacting gas are prepared by method for stamping, monopole is formed
Plate.Parallel fluid channels are from one end of pole plate to other end insertion, without seal groove on pole plate；2）By a piece of titanium or titanium alloy skin with it is upper
State the unipolar plate with flow field and bipolar plates are prepared into by spot welding method.3）Prepared on bipolar plate surfaces a floor height electric conductivity and
Corrosion proof titanium carbide layer, its thickness is 1 μm, and corrosion current is 0.9 μ A/cm2, area specific resistance is 9 Ω .cm2, hydrogen infiltration system
Number is 1.8 × 106cm3/(sec.cm2.Pa).Titanium skin thickness is arbitrarily selected as needed, preferably 0.03 ~ 0.1mm, can so be made
The integral thickness of bipolar plates is decreased to 1mm；And then the overall weight of fuel cell can be reduced, and then its specific power is improved, compared with
Thin titanium skin is also beneficial to radiating.
Titanium carbide layer is prepared from using surface in situ redox new technology, and specific preparation technology is：1）Titanium skin is existed
300 are heated under pure oxygen environment~500DEG C (preferably 400 DEG C), prepare one layer of TiO on bipolar plate surfaces2, thickness is 1~50μm；
2）TiO is carried by above-mentioned2The titanium-based metal bipolar plates of layer, which are put in N2 atmosphere, is heated to 750~1050DEG C (preferably 850 DEG C), and delay
The slow mixed gas for being passed through hydrogen and natural gas, air inlet mol ratio is H2:Natural gas=0.5:99.5~3:97 (preferably 1:100),
Insulation 1.5~2H, makes TiO2Layer is changed into TiC layer.It is that completion prepares metal bipolar board finished product after cooling.
For the performance of relatively more different bipolar plates, the metal double polar plates and 51 that 51 methods of the invention are made are respectively adopted
The undressed titanium bipolar plates of piece and 51 graphite bi-polar plates are assembled into fuel cell pile, carry out generator experimental, performance
Contrast is as shown in Figure 2.It is seen that undressed titanium bipolar plate fuel battery is in 0.5A/cm2Voltage be 0.56V,
And pass through the titanium bipolar plate fuel battery of TiC of the present invention processing in 0.5A/cm2Voltage be 0.66V, the performance phase with graphite cake
Seemingly.After the 300 hours long-term electric discharge, undressed titanium bipolar plate fuel battery performance degradation 52mV, and pass through this hair
The voltage attenuation of the titanium bipolar plate fuel battery of bright TiC processing is 25mV, also similar to the performance of graphite cake.
Embodiment 3
On the basis of embodiment 2, using titanium alloy skin（Titanium alloy can be divided into structural titanium alloy and heat-resistant titanium alloy, or α types
Any one in titanium alloy, beta titanium alloy and alpha and beta type titan alloy, these titanium alloys all can be used.）It is used as metal double polar plates
Base material, its preparation technology is：1）Titanium alloy skin is prepared into the parallel fluid channels being distributed for reacting gas by method for stamping, forms single
Pole plate.Parallel fluid channels are from one end of pole plate to other end insertion, without seal groove on pole plate；2）By a piece of titanium alloy skin and above-mentioned band
The unipolar plate for having flow field is prepared into bipolar plates by spot welding method.Or above-mentioned two panels unipolar plate be prepared into by spot welding method it is bipolar
Plate.3）A floor height electric conductivity and corrosion proof titanium carbide layer are prepared on bipolar plate surfaces, its thickness is 50 μm, and corrosion current is
0.5μA/cm2, area specific resistance is 6 Ω .cm2, hydrogen gas permeation coefficient is 1 × 106cm3/(sec.cm2.Pa)。
As further preferred embodiment, the thickness of the titanium alloy skin is 0.1mm, the entirety of corresponding bipolar plates
Thickness is 4mm；And then the overall weight of fuel cell can be reduced, and then its specific power is improved, relatively thin titanium skin is also beneficial to dissipate
Heat.
In the present invention, titanium carbide layer is prepared from using surface in situ redox new technology, and specific preparation technology is：1）
Titanium alloy bipolar plates are heated to 500 DEG C under pure oxygen environment, one layer of TiO is prepared on bipolar plate surfaces2, thickness is 30-50 μ
m；2）TiO is carried by above-mentioned2The titanium alloy bipolar plates of layer put N2Be heated to 800-1050 DEG C in atmosphere, and be slowly introducing hydrogen and
The mixed gas of methane, air inlet mol ratio is H2:Methane=3:97,2h is incubated, makes TiO after cooling2Layer is changed into TiC layer.Make
Obtain metal double polar plates of the present invention.
The pile electricity generation system specific power that the metal bipolar plate fuel battery obtained using above-described embodiment 1 and 2 is constituted can
Up to more than 500W/kg, power density is up to more than 550W/L.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to the present invention
The restriction of embodiment.For those of ordinary skill in the field, it can also be made on the basis of the above description
Its various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And these belong to this hair
Among the obvious changes or variations that bright spirit is extended out is still in protection scope of the present invention.
Claims (1)
1. a kind of hydrogen power supply, including：Metal bipolar plate fuel battery, it is characterised in that：The power supply of metal bipolar plate fuel battery
Output end is connected with a blower fan, and blower fan is connected through DC/DC circuits with the power output end of the metal bipolar plate fuel battery, wind
Machine is aerofoil fan；The blower fan is located at the cathode flow channels side of the metal bipolar plate fuel battery, for making air pressure pair
Stream supplies reaction air and cooling air needed for fuel cell power generation by fuel battery negative pole；
The air inlet of the metal bipolar plate fuel battery is connected through a closed type electrically-controlled valve, pressure-reducing valve with hydrogen source successively, and metal is double
The exhaust outlet of pole plate fuel cell is provided with open type electrically-controlled valve；Blower fan, closed type electrically-controlled valve and open type electrically-controlled valve and a control
Device processed is connected；The temperature sensor that controller also is used to measure metal double polar plates fuel battery temperature with one is connected；Controller root
According to the rotating speed of the temperature control blower fan measured；
The charged circuit of power output end of the metal bipolar plate fuel battery is connected with a battery, the battery and the wind
Machine, closed type electrically-controlled valve, open type electrically-controlled valve are connected with controller；
The hydrogen of hydrogen source release enters metal double polar plates fuel cell after closed type electrically-controlled valve, automatically controlled finally by open type
Valve is discharged；
Its control method is：Detection is carried out and and to axle to the temperature signal of metal bipolar plate fuel battery using temperature sensor
Flow fan fan blade speed automation；As 30 DEG C of metal double polar plates temperature of fuel cell ＜, aerofoil fan is closed；Work as gold
When belonging to bipolar plate fuel battery operating temperature >=30 DEG C, aerofoil fan is idle；When metal double polar plates operation of fuel cells temperature
When >=45 DEG C of degree is spent, aerofoil fan rotating speed reaches maximum；When metal double polar plates temperature of fuel cell is spent more than 60 DEG C,
Controller starts alarm；When 65 DEG C of metal double polar plates temperature of fuel cell ＞ spends, controller passes through closed type electrically-controlled valve
Hydrogen supply is interrupted, makes metal double polar plates fuel cell.
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| CN108637476B (en) * | 2018-04-28 | 2022-03-15 | 上海治臻新能源股份有限公司 | Laser welding electromagnetic adsorption clamping device of fuel cell bipolar plate and processing method |
| CN110257756B (en) * | 2019-07-23 | 2021-08-31 | 海南海控特玻科技有限公司 | Preparation method of surface titanium carbide metal product |
| CN110649286B (en) * | 2019-09-30 | 2022-09-20 | 西安新衡科测控技术有限责任公司 | HT-PEM (high-temperature proton exchange membrane) -based oxygen supply fan control method for methanol-water fuel cell stack |
| CN111477899B (en) * | 2020-02-27 | 2022-12-09 | 太原理工大学 | Conductive corrosion-resistant metal bipolar plate for fuel cell and preparation method thereof |
| CN111354959B (en) * | 2020-05-25 | 2020-12-04 | 北京动力京工科技有限公司 | Portable anti-tipping combined heat and power device for hydrogen production by metal hydrolysis and control method thereof |
| CN112599813A (en) * | 2020-12-16 | 2021-04-02 | 北方特种能源集团有限公司西安庆华公司 | Portable air-cooled hydrogen fuel cell system |
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