CN100536206C - A hydrogen flow guiding slot plate of fuel battery - Google Patents
A hydrogen flow guiding slot plate of fuel battery Download PDFInfo
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- CN100536206C CN100536206C CNB2006100275480A CN200610027548A CN100536206C CN 100536206 C CN100536206 C CN 100536206C CN B2006100275480 A CNB2006100275480 A CN B2006100275480A CN 200610027548 A CN200610027548 A CN 200610027548A CN 100536206 C CN100536206 C CN 100536206C
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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
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Abstract
The invention relates to hydrogen guiding groove board of fuel battery, said hydrogen guiding groove board comprises positive hydrogen guiding groove board; negative surface is flat board or single board with cooling flow groove, said hydrogen guiding groove board possesses flow hole for air, hydrogen, cooling liquid and guiding groove which is connected between flow holes; said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, the guiding groove which is designed between hydrogen holes is designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove which is set between flow hole for cooling liquid is designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can decrease resistance and pressure reduction, liquid can flow on liquid field evenly, effective area can be increased; jam of guiding groove can be avoided.
Description
Technical field
The present invention relates to fuel cell, relate in particular to a kind of hydrogen flow guiding slot plate of fuel cell.
Background technology
Electrochemical fuel cell is a kind of device that hydrogen fuel and oxidant can be changed into electric energy and product.The internal core parts of this device are membrane electrode (Membrane Electrode Assembly are called for short MEA), and membrane electrode (MEA) is made up of as carbon paper a proton exchange membrane, two porous conductive materials of film two sides folder.The catalyst that contains the initiation electrochemical reaction of even tiny dispersion on two boundary faces of film and carbon paper is as the metal platinum catalyst.The electronics that the membrane electrode both sides can will take place to generate in the electrochemical reaction process with conductive body is drawn by external circuit, constitutes current circuit.
At the anode tap of membrane electrode, fuel can pass porousness diffusion material (carbon paper) by infiltration, and electrochemical reaction takes place on catalyst surface, lose electronics, form cation, cation can pass proton exchange membrane by migration, arrives the other end cathode terminal of membrane electrode.At the cathode terminal of membrane electrode, contain the gas of oxidant (as oxygen), as air, pass porousness diffusion material (carbon paper), and the generation electrochemical reaction obtains electronics on catalyst surface, forms anion by infiltration.The cation of coming in the anion and the anode tap migration of cathode terminal formation reacts, and forms product.
Adopting hydrogen is fuel, and the air that contains oxygen is in the Proton Exchange Membrane Fuel Cells of oxidant (or pure oxygen is an oxidant), and fuel hydrogen has just produced hydrogen cation (or being proton) in the catalytic electrochemical reaction of anode region.Proton exchange membrane helps the hydrogen cation to move to the cathodic region from the anode region.In addition, proton exchange membrane is separated the air-flow and the oxygen containing air-flow of hydrogen fuel, they can not mixed mutually and produces explosion type reaction.
In the cathodic region, oxygen obtains electronics on catalyst surface, forms anion, and moves the hydrogen cation reaction of coming, reaction of formation product water with the anode region.In the Proton Exchange Membrane Fuel Cells that adopts hydrogen, air (oxygen), anode reaction and cathode reaction can be expressed in order to following equation:
Anode reaction: H
2→ 2H
++ 2e
Cathode reaction: 1/2O
2+ 2H
++ 2e → H
2O
In typical Proton Exchange Membrane Fuel Cells, membrane electrode (MEA) generally all is placed in the middle of the pole plate of two conductions, and quarter is milled by die casting, punching press or machinery in the surface that every block of flow guiding electrode plate contacts with membrane electrode, and formation is the guiding gutter of one or more at least.These flow guiding electrode plates can be the pole plates of metal material, also can be the pole plates of graphite material.Water conservancy diversion duct on these flow guiding electrode plates and guiding gutter import fuel and oxidant the anode region and the cathodic region on membrane electrode both sides respectively.In the structure of a Proton Exchange Membrane Fuel Cells monocell, only there is a membrane electrode, the membrane electrode both sides are respectively the guide plate of anode fuel and the guide plate of cathode oxidant.These guide plates are both as the current collector motherboard, also as the mechanical support on membrane electrode both sides, guiding gutter on the guide plate acts as a fuel again and enters the passage of anode, cathode surface with oxidant, and as the passage of taking away the water that generates in the fuel cell operation process.
In order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, two or more monocells can be connected into battery pack or be unified into battery pack by the mode that tiles usually by straight folded mode.In straight folded, in-line battery pack, can there be guiding gutter on the two sides of a pole plate, and wherein one side can be used as the anode guide face of a membrane electrode, and another side can be used as the cathode diversion face of another adjacent membranes electrode, and this pole plate is called bipolar plates.A series of monocell connects together by certain way and forms a battery pack.Battery pack tightens together by front end-plate, end plate and pull bar usually and becomes one.
A typical battery stack generally includes: the water conservancy diversion import and the flow-guiding channel of (1) fuel and oxidant gas are distributed to fuel (as hydrogen, methyl alcohol or the hydrogen-rich gas that obtained by methyl alcohol, natural gas, gasoline) and oxidant (mainly being oxygen or air) in the guiding gutter of each anode, cathode plane equably after reforming; (2) import and export and the flow-guiding channel of cooling fluid (as water) are evenly distributed to cooling fluid in each battery pack inner cooling channel, the heat absorption that hydrogen in the fuel cell, the exothermic reaction of oxygen electrochemistry are generated and take battery pack out of after dispel the heat; (3) outlet of fuel and oxidant gas and corresponding flow-guiding channel, fuel gas and oxidant gas are when discharging, and portability goes out the liquid that generates in the fuel cell, the water of steam state.Usually, the import and export of all fuel, oxidant, cooling fluid are all opened on the end plate of fuel battery or on two end plates.
Proton Exchange Membrane Fuel Cells can be used as the dynamical system of delivery vehicles such as all cars, ship, can make portable, portable, fixed Blast Furnace Top Gas Recovery Turbine Unit (TRT) again.The Proton Exchange Membrane Fuel Cells electricity generation system must comprise fuel cell pack, fuel hydrogen supply, air supply, cooling heat dissipation, various piece such as control and electric energy output automatically.Stable and the reliability of Proton Exchange Membrane Fuel Cells operation is very important to the application as car, ship power system or movable Blast Furnace Top Gas Recovery Turbine Unit (TRT).Stable and the reliability that wherein improves fuel cell pack is crucial.
At present, pem fuel cell stack in the design of each fluid passage, usually adopt sacrifice pole plate effectively utilize area, offer fluid bore in the same position of each membrane electrode and pole plate, and with each piece membrane electrode and pole plate through each fluid passage of superimposed composition.That is to say, be equipped with the fluid bore that fuel advances, fuel goes out, oxidant advances, oxidant goes out, cooling fluid advances, cooling fluid goes out on every membrane electrode and the pole plate, these membrane electrodes and guide plate are just formed fuel battery through vertical after superimposed, and the fuel that these fluid bore have just been formed fuel battery inside into and out of; Oxidant into and out of; Cooling fluid into and out of each fluid flow guiding passage, and these fluid passages be integrated into before or after the fuel battery form fuel inlet, fuel outlet on the end plate, oxidant inlet, oxidant outlet, cooling fluid import, cooling fluid outlet.
For example: Ballard Power Systems company, at Us Patent 5,773,160 and Us Patent5, in 840,438 United States Patent (USP)s such as grade the design of two kinds of used flow guide plate of fuel cell as shown in Figure 1,1 is the guide plate of this fuel cell among the figure.
The fluid bore of above-mentioned flow guide plate of fuel cell and guiding gutter design have following characteristics:
1, is overlapped into fuel cell pack for guide plate and electrode with quantity more (can reach one to 200), each fluid bore on the guide plate often is designed to bigger area, the fluid bore of oxidant air particularly, because it is very big that air mass flow needs, its fluid bore area is also very big, can make battery enough big like this, the fluid of enough big flow can be evenly distributed on each piece guide plate with regard to the fluid duct volume in the heap.
2, in order to increase electrode two side fuel hydrogen and oxidant air to electrode reaction district rapid diffusion, the guiding gutter on the guide plate often is designed to snakelike or having many bends or curves shape, makes fluid pass through to form turbulent flow, is beneficial to the electrode interior reaction zone and spreads.
Above-mentioned flow guide plate of fuel cell fluid duct and guiding gutter design have following technological deficiency:
Each fluid bore area on the guide plate is bigger, and every kind of fluid advances from the inlet fluid orifice flow, generally need be having many bends or curves around time whole water conservancy diversion field along guiding gutter more than one, and each bar guiding gutter also together flows out from the outlet fluid bore.Because it is very big more than one guiding gutter bendability, and guiding gutter length is longer, the product water that fuel cell generates is easy in the appearance of electrode cathode side and the air conducting groove is stopped up, and the product water that fuel cell generates also is easy to occur in the electrode anode side by reverse osmosis, and the hydrogen flow guide groove is stopped up.When particularly fuel cell is used as car, ship power system or movable Blast Furnace Top Gas Recovery Turbine Unit (TRT), because the working conditions change of dynamical system is very big, the power output of fuel cell also alters a great deal, and the water of fuel cell generation is easier like this stops up air, hydrogen flow guide groove.In addition, for the water slug guiding gutter that prevents that fuel cell from generating, often adopt the air and hydrogen metering ratio that improves fuel cell operation, just strengthen air, hydrogen flowing quantity, take product water out of fuel cell with excessive air, hydrogen, this operation method is actually and greatly reduces fuel cell system efficient, because excessive air is wasted or excessive hydrogen is recycled conveying, must cause the mechanical consumption of carrying air or circulating hydrogen to increase, thereby reduce fuel cell system efficient.
Once more, when flow guide plate of fuel cell air conducting groove in service or hydrogen flow guide groove stopped up, it was very low even negative value occurs to show certain indivedual cell voltage that stop up, and causes the fuel cell operation instability, electrode can be punctured when serious, and the entire cell heap is damaged.
Shenli Science and Technology Co Ltd, Shanghai is in order to overcome the shortcoming of above-mentioned design, (the application for a patent for invention number: 02155095.6 of " a kind of guide plate that improves fuel cell operation stability " patent was once disclosed, utility application number: 02283431.1), the structural representation of its guide plate as shown in Figure 2,2,3 are respectively and import and export fluid bore, guiding gutter among the figure.A kind of guide plate that improves fuel cell operation stability comprises the guide plate body, and this body is provided with the fluid bore that can supply turnover air, turnover hydrogen, the circulation of turnover cooling water, and is connected in into and out of the guiding gutter between the fluid bore; It is characterized in that the fluid bore of described turnover air or turnover hydrogen is one or more pairs of, is arranged on these one or more pairs of guiding gutters between fluid bore and is many parallel wavy shapes or bending.To be that bipolar plates two ends are one or more pairs of be symmetry shape respectively into and out of fluid bore and be distributed in pole plate two ends the design feature of these flow-guide double-pole plates, occupied the bigger effective area of plate, between a plurality of various flows body openings in the difficulty of arranging of same end.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of reduce resistance and pressure drop etc. in order to overcome the defective that above-mentioned prior art exists, and makes fluid being evenly distributed on the flow field, increases effective area, prevents the hydrogen flow guiding slot plate of the fuel cell that guiding gutter stops up.
Purpose of the present invention can be achieved through the following technical solutions: a kind of hydrogen flow guiding slot plate of fuel cell, described hydrogen flow guiding slot plate be dull and stereotyped by front hydrogen flow guiding slot plate, reverse side or have conduction cooling but the unipolar plate of fluid slot form, described hydrogen flow guiding slot plate is provided with the fluid bore that can supply turnover air, turnover hydrogen, turnover cooling fluid, and is connected in into and out of the guiding gutter between the fluid bore of hydrogen and cooling fluid; It is characterized in that the fluid bore of described turnover air or turnover hydrogen is that single hole advances, diplopore or porous go out, be arranged on guiding gutter between this turnover hydrogen stream body opening and be designed to direct current groove or near direct current groove; The fluid bore of described turnover cooling fluid is single hole or diplopore or porous is advanced, diplopore or porous go out, and the guiding gutter that is arranged between the fluid bore of this turnover cooling fluid is designed to direct current groove or nearly direct current groove.
The hydrogen single hole that advances of described hydrogen flow guiding slot plate is told many sow (channel)s, these many sow (channel)s are respectively told many chutes, this chute is pooled to many sow (channel)s of the other end after through the flow field again, and these many sow (channel)s enter respectively successively and two or morely go out in the hydrogen blistering.
The described conduction cooling but single hole of fluid or diplopore or porous influent stream body opening is told many sow (channel)s, these many sow (channel)s are respectively told many chutes, this chute is pooled to many sow (channel)s of the other end after through the flow field again, and these many sow (channel)s enter diplopore respectively successively again or porous goes out in the fluid bore.
The advancing the air single hole and enter the two ends that the hydrogen single hole is located at this hydrogen flow guiding slot plate respectively of described hydrogen flow guiding slot plate.
Describedly advance the end that the air single hole is located at hydrogen flow guiding slot plate, describedly go out the air diplopore or porous is located at the both sides of the hydrogen flow guiding slot plate other end or by the centre position.
Describedly advance the end that the hydrogen single hole is located at hydrogen flow guiding slot plate, describedly go out the hydrogen diplopore or porous is located at the both sides of the hydrogen flow guiding slot plate other end or by the centre position.
Describedly advance that cooling fluid single hole or diplopore or porous are located at the both sides of hydrogen flow guiding slot plate one end or, describedly go out the cooling fluid diplopore or porous is located at the both sides of the hydrogen flow guiding slot plate other end or by the centre position by the centre position.
Compared with prior art, characteristics of the present invention are:
1, the single hole fluid bore of advancing hydrogen generally is located at hydrogen flow guiding slot plate centre position, two ends up and down, the fluid bore that goes out hydrogen is divided into diplopore or porous, this design makes runner distance, resistance and the pressure drop etc. of hydrogen stream warp all the same, is easy to make hydrogen to be evenly distributed on the flow field;
2, the design of adopting many sow (channel)s to split into several chutes respectively can reduce the design of pod apertures area, increases active area, thereby increases volume (weight) power density;
3, the general a large amount of guide plate Lower Halves that concentrate on of the product water of fuel cell generation, diplopore or porous go out pod apertures and are difficult for water blockoff, can reach drainage effect preferably;
4, guiding gutter is designed to straight channel, can make the resistance of fluid turnover, and pressure drop is little, satisfies the requirement of fuel cell normal pressure or low pressure, and single hole advances, and diplopore or porous go out to be easy to realize the design of this straight channel.
Description of drawings
Fig. 1 is the structural representation of existing guide plate;
Fig. 2 is the structural representation of another kind of existing guide plate;
Fig. 3 is the structural representation of the embodiment of the invention 1 hydrogen flow guiding slot plate;
Fig. 4 is the structural representation of the embodiment of the invention 2 hydrogen flow guiding slot plates.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
As shown in Figure 3, a kind of hydrogen flow guiding slot plate of fuel cell, this hydrogen stream frid is made up of the veneer of a hydrogen flow guiding slot plate B, and described hydrogen flow guiding slot plate is provided with the fluid bore that single hole 4 advances, diplopore 5 goes out air; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole 8 advances, diplopore 9 goes out hydrogen, advance the fluid bore of hydrogen and tell four hydrogen flow guiding grooves 10, these four hydrogen flow guiding grooves are respectively told four hydrogen flow guiding grooves 11 that is parallel direct current shape, this hydrogen flow guiding groove 11 is pooled to four hydrogen flow guiding grooves of the other end again, and these four hydrogen flow guiding grooves enter out respectively in the fluid bore 9 of hydrogen again; Described hydrogen flow guiding slot plate is provided with diplopore and advances 12, diplopore goes out the fluid bore of 13 cooling fluids, advance the fluid bore of cooling fluid and tell but fluid slot of four conduction coolings, these four conduction coolings but fluid slot are respectively told but fluid slot of four conduction coolings that are parallel direct current shape, this conduction cooling is the fluid slot but fluid slot of four conduction coolings that is pooled to the other end again but, and these four conduction coolings but fluid slot enter out respectively in the fluid bore 13 of cooling fluid again.
The pod apertures of above-mentioned hydrogen flow guiding slot plate concentrates on hydrogen flow guiding slot plate two ends up and down respectively, and its fluid single hole that advances air advances hydrogen with it fluid single hole is located at hydrogen flow guiding slot plate two ends up and down respectively.
As shown in Figure 4, a kind of hydrogen flow guiding slot plate of fuel cell, this hydrogen flow guiding slot plate are the water conservancy diversion unipolar plate, and described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, diplopore goes out air; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole 14 advances, diplopore 15 goes out hydrogen, advance the fluid bore of hydrogen and tell six hydrogen flow guiding grooves, these six hydrogen flow guiding grooves are respectively told four hydrogen flow guiding grooves that is parallel direct current shape, this hydrogen flow guiding groove is pooled to six hydrogen flow guiding grooves of the other end again, and these six hydrogen flow guiding grooves enter respectively in the fluid bore that goes out hydrogen by both sides again; Described hydrogen flow guiding slot plate is provided with diplopore and advances, and diplopore goes out the fluid bore of cooling fluid; Described hydrogen flow guiding slot plate reverse side is dull and stereotyped.
The pod apertures of above-mentioned hydrogen flow guiding slot plate concentrates on hydrogen flow guiding slot plate two ends up and down respectively, and its fluid single hole that advances air advances hydrogen with it fluid single hole is located at hydrogen flow guiding slot plate two ends up and down respectively.
Embodiment 3
Please refer to shown in Fig. 3,4, a kind of hydrogen flow guiding slot plate of fuel cell, this hydrogen flow guiding slot plate are the water conservancy diversion unipolar plate, and described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, four holes go out air; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, four holes go out hydrogen, advance the fluid bore of hydrogen and tell 20 hydrogen flow guiding grooves, these 20 hydrogen flow guiding grooves are respectively told two hydrogen flow guiding grooves that is parallel direct current shape, this hydrogen flow guiding groove is pooled to 20 hydrogen flow guiding grooves of the other end again, and these 20 hydrogen flow guiding grooves enter out in the fluid bore of hydrogen more respectively; Described hydrogen flow guiding slot plate is provided with diplopore and advances, four holes go out the fluid bore of cooling fluid, advance the fluid bore of cooling fluid and tell but fluid chute of 20 conduction coolings, these 20 conduction coolings but fluid chute are respectively told but fluid chute of two conduction coolings that are parallel direct current shape, this conduction cooling is the fluid chute but fluid chute of 20 conduction coolings that is pooled to the other end again but, and these 20 conduction coolings but fluid chute enter out in the fluid bore of cooling fluid more respectively; Described hydrogen flow guiding slot plate reverse side is dull and stereotyped.
The pod apertures of above-mentioned hydrogen flow guiding slot plate concentrates on hydrogen flow guiding slot plate two ends up and down respectively, and its fluid single hole that advances air advances hydrogen with it fluid single hole is located at hydrogen flow guiding slot plate two ends up and down respectively.
Embodiment 4
Please refer to shown in Fig. 3,4, a kind of hydrogen flow guiding slot plate of fuel cell, this hydrogen flow guiding slot plate are the water conservancy diversion unipolar plate, and described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, four holes go out air; Described hydrogen flow guiding slot plate is provided with the fluid bore that single hole advances, diplopore goes out hydrogen, advance the fluid bore of hydrogen and tell two hydrogen flow guiding grooves, these two hydrogen flow guiding grooves are respectively told ten hydrogen flow guiding grooves that is parallel direct current shape, this hydrogen flow guiding groove is pooled to two hydrogen flow guiding grooves of the other end again, and these two hydrogen flow guiding grooves enter out in the fluid bore of hydrogen more respectively; Described hydrogen flow guiding slot plate is provided with three holes and advances, four holes go out the fluid bore of cooling fluid, advance the fluid bore of cooling fluid and tell but fluid chute of two conduction coolings, these two conduction coolings but fluid chute are respectively told but fluid chute of ten conduction coolings that are parallel direct current shape, this conduction cooling is the fluid chute but fluid chute of two conduction coolings that is pooled to the other end again but, and these two conduction coolings but fluid chute enter out in the fluid bore of cooling fluid more respectively; Described hydrogen flow guiding slot plate reverse side is dull and stereotyped.
The pod apertures of above-mentioned hydrogen flow guiding slot plate concentrates on hydrogen flow guiding slot plate two ends up and down respectively, and its fluid single hole that advances air advances hydrogen with it fluid single hole is located at hydrogen flow guiding slot plate two ends up and down respectively.
Claims (4)
1. the hydrogen flow guiding slot plate of a fuel cell, described hydrogen flow guiding slot plate be dull and stereotyped by front hydrogen flow guiding slot plate, reverse side or have conduction cooling but the unipolar plate of fluid slot form, described hydrogen flow guiding slot plate is provided with the fluid bore that can supply turnover air, turnover hydrogen, turnover cooling fluid, and is connected in into and out of the guiding gutter between the fluid bore of hydrogen and cooling fluid; It is characterized in that the fluid bore of described turnover air or turnover hydrogen is that single hole advances, porous goes out, the guiding gutter that is arranged between this turnover hydrogen stream body opening is designed to direct current groove; The fluid bore of described turnover cooling fluid is a single hole or porous is advanced, porous goes out, and the guiding gutter that is arranged between the fluid bore of this turnover cooling fluid is designed to direct current groove; The advancing the air single hole and enter the two ends that the hydrogen single hole is located at this hydrogen flow guiding slot plate respectively of described hydrogen flow guiding slot plate; Describedly advance the end that the air single hole is located at hydrogen flow guiding slot plate, describedly go out that the air porous is located at the both sides of the hydrogen flow guiding slot plate other end or by the centre position; Describedly advance the end that the hydrogen single hole is located at hydrogen flow guiding slot plate, describedly go out that the hydrogen porous is located at the both sides of the hydrogen flow guiding slot plate other end or by the centre position.
2. the hydrogen flow guiding slot plate of a kind of fuel cell according to claim 1, it is characterized in that, the hydrogen single hole that advances of described hydrogen flow guiding slot plate is told many sow (channel)s, these many sow (channel)s are respectively told many chutes, this chute is pooled to many sow (channel)s of the other end after through the flow field again, and many sow (channel)s of this other end enter respectively successively and a plurality ofly go out in the hydrogen blistering.
3. the hydrogen flow guiding slot plate of a kind of fuel cell according to claim 1, it is characterized in that, the described conduction cooling but single hole or the porous influent stream body opening of fluid is told many sow (channel)s, these many sow (channel)s are respectively told many chutes, this chute is pooled to many sow (channel)s of the other end after through the flow field again, and many sow (channel)s of this other end enter porous more successively respectively and go out in the fluid bore.
4. the hydrogen flow guiding slot plate of a kind of fuel cell according to claim 1, it is characterized in that, describedly advance the cooling fluid single hole or porous is located at the both sides of hydrogen flow guiding slot plate one end or by the centre position, describedly go out that the cooling fluid porous is located at the both sides of the hydrogen flow guiding slot plate other end or by the centre position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100275480A CN100536206C (en) | 2006-06-10 | 2006-06-10 | A hydrogen flow guiding slot plate of fuel battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100275480A CN100536206C (en) | 2006-06-10 | 2006-06-10 | A hydrogen flow guiding slot plate of fuel battery |
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| CN101087025A CN101087025A (en) | 2007-12-12 |
| CN100536206C true CN100536206C (en) | 2009-09-02 |
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| CNB2006100275480A Active CN100536206C (en) | 2006-06-10 | 2006-06-10 | A hydrogen flow guiding slot plate of fuel battery |
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| CN110380081B (en) * | 2019-07-24 | 2020-08-25 | 珠海格力电器股份有限公司 | Air-cooled fuel cell stack and system thereof |
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