CN103000918B - Separator for fuel cell - Google Patents
Separator for fuel cell Download PDFInfo
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- CN103000918B CN103000918B CN201110462292.7A CN201110462292A CN103000918B CN 103000918 B CN103000918 B CN 103000918B CN 201110462292 A CN201110462292 A CN 201110462292A CN 103000918 B CN103000918 B CN 103000918B
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- 239000000446 fuel Substances 0.000 title claims abstract description 32
- 238000009792 diffusion process Methods 0.000 claims abstract description 39
- 239000000376 reactant Substances 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims 3
- 239000007789 gas Substances 0.000 description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 12
- 238000003487 electrochemical reaction Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000001590 oxidative Effects 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- 102100007221 MIA2 Human genes 0.000 description 1
- 101700025999 MIA2 Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 238000011068 load Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Abstract
A kind of separator for fuel cell, including flow-field plate and main board.Flow-field plate has perforated plate construction and is incorporated into the outer surface of gas diffusion layers to form reactant gas flow field.Main board is incorporated into the outer surface of flow-field plate to seal reactant gas flow field.Flow-field plate has projection, and this projection is prominent from the two of flow-field plate surfaces with repeat patterns, forms uneven texture.Flow-field plate have in the projection prominent from flow-field plate surface most advanced and sophisticated from be incorporated into the piston ring land portion of gas diffusion layers, and at the counter tip of the projection prominent from another surface of flow-field plate, be incorporated into the joint portion of main board.
Description
Technical field
The present invention relates to a kind of separator for fuel cell.It is more particularly to such a use
In the separator of fuel cell, by improving the structure in the flow field that reacting gas flows wherein,
Make the gas diffusion between the region in gas diffusion layers and concentration difference minimum, and whole instead
Answer and obtain uniform electrochemical reaction on region and produce electric power.
Background technology
Utilize PEM fuel cell (PEMFCs), using by making as reaction
The hydrogen of gas and oxygen (or air) occur electrochemical reaction to give birth to electricity.
Owing to, compared with other type of fuel cell, PEMFCs has high efficiency, high electric current
Density and power density, short starting time and the fast response characteristic for load change, because of
This PEMFCs can be used for multiple fields, such as the power supply of zero-emission vehicle with for independent
Generating, transport and the power supply of military affairs.
Generally, fuel cell with stacking form use, wherein element cell is stacked up with
Meet necessary power stage.Fuel cell owing to being arranged in vehicle also needs to high power, because of
These hundreds of batteries are stacked to meet needs.
Membrane electrode assembly (MEA) is arranged in the interior of the unit cell structure of fuel cell pack
In layer segment.MEA include solid polymer electrolyte thin film and catalyst electrode, i.e. anode and
Negative electrode, it configures by coating catalyst on the two of electrolytic thin-membrane surfaces.
Gas diffusion layers (referred to hereafter as GDL), liner and similar structures are arranged in
The outside of the outside of MEA, i.e. anode and negative electrode.Separator also be disposed on the outside of GDL with
There is provided for supplying reacting gas and discharging the flow field of reaction generation water.
In this structure, the anode of fuel cell carries out the oxidation reaction of hydrogen to produce matter
Son and electronics.Produced proton and electronics are each passed through electrolytic thin-membrane and move to negative electrode and divide
Every device.
Thus, by electrochemical reaction produce water, in this electrochemical reaction, including conversion by
The proton of anode transmission and electronics and the oxygen from air, and in electrochemical reaction process,
Heat is produced together along with water.It addition, the raw electric energy of electron stream movable property.
On the other hand, separator be the element cell separated in fuel cell pack and serve as battery it
Between the parts of current channel.The flow field being formed in separator is served as reacting gas is defeated
Deliver to the service duct of GDL and for discharging the passing away of the water from GDL.
The example of separator includes the graphite separator formed by graphite material and by such as rustless steel
The metal separation device formed in metal material.In recent years, it is contemplated that workability and extensive life
Produce, carried out much research to use metal separation device to replace graphite separator.
Fig. 1 is the cross-sectional view illustrating typical metal separator, wherein MEA11, GDL12
It is bonded to each other with separator 20.
As it can be seen, separator 20 includes that the piston ring land (land) being directly incorporated into GDL12 (connects
Touch) portion and be used as the service duct (air and the passage of hydrogen) of reacting gas and piston ring land portion it
Between the channel part of passing away of water.
The channel part of typical separator 20 is arranged on the whole conversion zone of fuel cell
It is substantially parallel to each other, or is arranged to form the flow field of inclination.Design this flow field according to being used for
Method, the characteristic of such as battery performance, pressure and draining exists merits and demerits, but
Be, generally utilize the part corresponding with conversion zone by process rectangular cross section structure and with
The method that as etc, reacting gas is supplied in the flow field of other structure.
In this separator, piston ring land portion and channel part along being longitudinally arranged, thus, wherein groove
Spine is incorporated into the region of GDL and wherein forms the flow field (supply of reacting gas of channel part
Passage and the passing away of water) region is respectively provided with vertical structure.Meanwhile, piston ring land portion and channel part
Separate considerably from one another.
In this case, owing to the inner surface of channel part is smooth, therefore anti-in channel part
Answer the characteristic of air-flow display laminar flow.When reacting gas is along the flow field flow of length, reacting gas
Carried by pressure differential or concentration difference and to diffuse to GDL any without producing because of flowing
Power.
Simultaneously as flowing poor and being transported to the gas of GDL between piston ring land portion and channel part
The region of the GLD that diffusing capacity is engaged to channel part always according to piston ring land portion and change, and from
The discharging performance of the water of GDL also demonstrates the difference between piston ring land portion and channel part.
It is well known that preferably existed by the reacting gas of the flow field supply of separator in fuel cell
Uniformly spread on the whole region of GDL, and the water produced by reaction be preferably quickly discharged into outside,
Because water can suppress the chemical reaction occurred in the electrolytic thin-membrane of fuel cell.
But, when typical separation device, it is engaged to GDL 12 owing to piston ring land portion has
Large area, the wider GDL region that therefore gas diffusing capacity is engaged in piston ring land portion with
Change between the GDL region in the flow field of contact channel part.
With reference to Fig. 1, reacting gas (air and hydrogen) diffuses to GDL 12 from the flow field of channel part.
In such a configuration, gas diffusing capacity is the most respectively at contact piston ring land portion and channel part
Change between the region of GDL 12.
This uneven make occur electrochemical reaction MEA 11 whole region in channel part
Concentration difference is there is between region and the region of groove ridges contact of contact.
Therefore, the difference of produced electrochemical reaction in the whole region of MEA so that
It is difficult to expectation on whole conversion zone produce uniform electric power and reduce the globality of fuel cell
Energy.
Further, since typical separator is only limited primarily by reacting gas and is delivered to GDL's
Diffusion, thus it is difficult to obtain the quality transmission from separator to catalyst layer, thus reduce fuel
The restriction electric current density of battery also thus causes the reduction of overall performance.
It is additionally, since piston ring land portion and is incorporated into, with large area, the GDL that water is discharged, therefore make
For the shipwreck of electrochemical reaction by-product to be discharged.
It is used only to strengthen the reason of the background to the present invention in background section disclosure
Solve, wherein potentially include do not constitute this country those of ordinary skill in the art known existing
The information of technology.
Summary of the invention
The present invention provides a kind of separator for fuel cell, by improving reacting gas at it
The structure in the flow field of middle flowing, makes the gas diffusion between the region in gas diffusion layers and concentration
Difference minimum, and on whole conversion zone, obtain uniform electrochemical reaction and produce electric power.
In one aspect, the present invention provides a kind of separator for fuel cell, including: stream
Field plate, has perforated plate construction and is incorporated into the outer surface of gas diffusion layers to form reaction gas
Body flow field；And main board, it is incorporated into the outer surface of flow-field plate to seal reactant gas flow field,
Wherein flow-field plate has projection, this projection formed while uneven texture with repeat patterns from
Two surfaces of flow-field plate highlight, and flow-field plate has prominent from flow-field plate surface
The most advanced and sophisticated place of projection be incorporated into the piston ring land portion of gas diffusion layers, and another from flow-field plate
The joint portion of main board it is incorporated at the counter tip of the projection that one surface is prominent.
In one exemplary embodiment, the piston ring land portion of projection can be on flow-field plate a surface
It is spaced apart from each other with left and right directions before and after upper edge.
In another exemplary embodiment, projection can have Kong Yifen on its inclined side
Yun Xu not pass through by gas.
In another exemplary embodiment, hole can be along front and back with left and right directions at a predetermined interval
Arrange on flow field plates.
In another exemplary embodiment, the piston ring land portion of projection can be combined with linear contact lay state
To gas diffusion layers.
In the exemplary embodiment also having, the projection prominent from flow-field plate surface
The other parts in addition to piston ring land portion, can be spaced apart with gas diffusion layers.
In still further illustrative embodiments, the side of projection is spaced apart with gas diffusion layers,
Make reacting gas transversely by the gap between side and the gas diffusion layers of projection.
Other side and the exemplary embodiment of the present invention are described below.
Accompanying drawing explanation
Referring now to being only for illustration purposes only and the concrete example of accompanying drawing given below explaination
Property embodiment, to describe the above and other feature of the present invention in detail, and the most thus limit this
Invention, wherein:
Fig. 1 is the cross-sectional view of the battery illustrating application typical metal separator；
Fig. 2 is the axonometric chart illustrating the structure of separator according to an embodiment of the invention；
Fig. 3 is the top view of the flow-field plate in separator according to an embodiment of the invention；
Fig. 4 is the reaction gas illustrating the flow-field plate in separator according to an embodiment of the invention
The axonometric chart of the flow path of body；And
Fig. 5 is the axonometric chart illustrating various exemplary separator according to an embodiment of the invention.
The reference related in accompanying drawing includes following parts discussed further below:
11: membrane electrode assembly (MEA)
12: gas diffusion layers (GDL)
20: separator
21: flow-field plate
21a: projection
21b: piston ring land portion (land portion)
21c: joint portion
21d: hole；And
22: main board
It should be appreciated that accompanying drawing is not necessarily drawn to scale, but present explanation base of the present invention
The simplification of the various preferred features of present principles represents.The specific of the present invention disclosed herein sets
Meter feature, including such as specific dimensions, direction, position and shape, these features will partly
By intended application-specific and use environments to determine.
In the accompanying drawings, in several whole figures, reference refers to the phase in the present invention all the time
With or equivalent elements.
Detailed description of the invention
In detail below with reference to the various embodiments of the present invention, embodiments of the invention are in the accompanying drawings
It is illustrated and is described below.Although the present invention will be described in conjunction with one exemplary embodiment,
It will be understood, however, that this description is not intended to limit the invention to those exemplary enforcements
In example.But, on the contrary, it is intended to not only cover one exemplary embodiment, and cover various
Can preferred form of this, modification, the equivalent form of value and other embodiments, it can be comprised in by appended right
Require in the spirit and scope of the present invention limited.
It is understood that term used herein " vehicle " or " vehicle " or its
Its similar term includes motor vehicles generally speaking, such as comprises sport vehicle
(SUV), bus, lorry, the passenger vehicle of various commerial vehicles, comprise various steamer and warship
The ship of ship, aircraft etc., and include that motor vehicle driven by mixed power, electric automobile, mixing are moved
Power electric automobile, hydrogen car and other alternative fuel vehicle (such as, from except oil with
The fuel obtained in outer resource).As cited in this article, motor vehicle driven by mixed power is to have
The vehicle of two or more power resources, such as gasoline powered vehicles and electric-powered both vehicles.
Describe the exemplary embodiment of the present invention hereinafter with reference to the accompanying drawings in detail.
The present invention relates to a kind of separator for fuel cell, by improving reacting gas at it
The structure in the flow field of middle flowing, makes the gas diffusion between the region in gas diffusion layers and concentration
Difference minimum, and on whole conversion zone, obtain uniform electrochemical reaction and produce electric power.
Fig. 2 is the axonometric chart illustrating separator structure according to an embodiment of the invention.Thin film-
Electrode assemblie (MEA) 11 and separator 20 can be incorporated into gas diffusion layers (GDL) 12.
GDL 12 and separator 20 actually can be incorporated into the both sides of MEA 11, but the most only
It is shown in GDL 12 and the separator 20 of MEA 11 side.
Although it addition, heap and battery structure are with MEA 11, GDL 12 and the institute of separator 20
The state having assembly all to combine togather manufactures, but in fig. 2 with the side decomposed
Formula illustrates the assembly in addition to MEA 11 and GDL 12.
Fig. 3 is the top view of the flow-field plate in separator according to an embodiment of the invention.Fig. 4
It it is the reacting gas illustrating the flow-field plate passed through according to an embodiment of the invention in separator
The axonometric chart of flow path.Fig. 5 be illustrate the most multiple exemplary
The axonometric chart of separator.
As in figure 2 it is shown, GDL 12 can be incorporated on two surfaces of MEA 11, and separate
Device 20 can be incorporated into two outer surfaces of GDL 12.
Separator 20 may be logically divided into anode-side separator and cathode side separator.Anode-side separator
Can be coupled to be incorporated in the outer surface of the GDL 12 of the anode of MEA 11, to supply such as hydrogen
The fuel gas such as gas.Cathode side separator can be coupled to be incorporated into the cathode side of MEA 11
The outer surface of GDL 12, to supply the such as oxidizing gas such as oxygen or air.
Separator 20 can include flow-field plate 21, has the perforated plate construction for forming flow field；With
And it is incorporated into the main board 22 in the outside of flow-field plate 21.The flow field of flow-field plate 21 may act as supplying
Answer passage, for reacting gas (fuel and oxidizing gas) is transported to GDL 12 and passes through
GDL 12 discharges the water of the by-product as electrochemical reaction.
Here, flow-field plate 21 can be incorporated into the outer surface of GDL 12, and main board 22 can quilt
It is attached to the outside of flow-field plate 21.Thus, when contacting the surface of GDL 12, main board 22
And the space between GDL 12 can become the flowing space that reacting gas flows wherein.
Can be by performing hole opening technology and foam process on the metallic plates such as such as corrosion resistant plate
(for forming the imprint process of imprinted pattern) manufactures flow-field plate 21.Flow-field plate 21 can have
Having such a structure, its mesopore 21d and imprinted pattern heterogeneous are repeatedly formed.
More particularly, if Fig. 2 is to shown in 5, can be with in advance on the whole region of flow-field plate 21
Fixed interval is repeatedly formed the imprinted pattern of heterogeneous texture, and along front and back with left and right directions with in advance
Fixed spaced apart hole 21d is repeatably formed on the side of imprinted pattern.
In this case, imprinted pattern can be formed to repeat cloth in back and forth and right and left directions
Put.When from each surface observation of flow-field plate 21, repeat cloth at a predetermined interval in imprinted pattern
On the position put, each imprinted pattern can include projection 21a prominent with chevron.
Projection 21a can be along front and back repeatedly arranging with left and right directions, wherein from the one of flow-field plate 21
One tip of the projection that individual surface is prominent can become the piston ring land portion (land being incorporated into GDL 12
Portion) 21b, and another tip of the projection prominent from another surface of flow-field plate 21
The joint portion 21c being incorporated into main board 22 can be become.
Piston ring land portion 21b and joint portion 21c can be along front and back arranging at a predetermined interval with left and right directions.
Especially, the integrated structure of piston ring land portion 21b and GDL 12 can be contact structure, wherein this
A little lines are spaced apart from each other at a predetermined interval.
In typical separation device shown in FIG, piston ring land portion can be incorporated into has continuous level
The GDL of contact structures, these continuous level contact structures have between channel part large area and
Specific width, but in separator according to an embodiment of the invention, the piston ring land being spaced apart from each other
Portion 21b can be incorporated into GDL 12, has dotted line pattern as entirety.
Additionally, porose 21d can also be formed in the inclined surface of projection 21a, thus with specific
Interval forms repeat patterns.The access opening that hole 21d can be used as reacting gas and water passes through.Hole 21d
Such as circle or oval various shape can be formed with.
The other parts of the flow-field plate in addition to the piston ring land portion 21b of projection 21a, can be with GDL 12
Separately.Gap can be formed to allow reacting gas between the side and GDL 12 of projection 21a
Transversely flow.Reacting gas can flow through gap, interval and the hole 21d of projection 21a side,
Thus can flow in the three-dimensional path of vertical, horizontal direction.
Therefore, the gap of hole 21d and the side of projection 21a the flow field formed can allow instead
Gas forced flow is answered to change (forced flow conversion).When being provided to separator 20
Reacting gas by flow-field plate 21 time, reacting gas may pass through the side of hole 21a and projection 21a
The gap of end, in order to flow along the vertical and horizontal directions and show turbulence state.
Especially, owing to reacting gas moves with the form of turbulent flow, therefore except by flow field and GDL
Between the mass transfer that causes of diffusion outside, also can produce the pressure from flow-field plate to GDL right
Stream.Therefore, can be changed by forced flow and carry out mass transfer.
Thus, owing to the flow phenomenon along GDL direction, the i.e. convection current along GDL direction allow
Reacting gas is flowed into GDL forcibly and artificially, can increase the reactive flowfield from separator
It is transported to the amount of reactant gases of GDL, such that it is able to by the reacting gas of the catalyst layer of MEA
It is maintained at higher concentration.
In the typical separation device shown in Fig. 1, reacting gas is along being longitudinally formed in one direction
Channel part in flow field interval, with laminar flow (wherein only exist about flow direction speed vow
Amount) mode flow, and gas transfer (gas transfers to GDL from separator) is main the most only
Performed by diffusion.But, in separator according to embodiments of the present invention, owing to leading to
Cross forced convertion and perform mass transfer extraly, therefore can increase the conveying capacity of reacting gas,
And owing to the turbulent flow in flow field can produce the flow rate along GDL direction, thus increase quality and turn
The effect moved.
And, in typical separation device, due to piston ring land portion be incorporated into have large-area continuously
On the GDL of flat interface construction, therefore can significantly produce gas between piston ring land portion and channel part
Transfer and the difference of diffusion.But, in separator according to embodiments of the present invention, due to groove
Spine 21b is incorporated into the GDL 12 with dotted line (dotted line) contact structures, therefore may be used
So that the gas being incorporated in GDL 12 between the piston ring land portion of flow-field plate and the region in flow field portion
Bulk diffusion and concentration difference minimum (distribution of uniform concentration can be obtained), and whole
It is obtained in that the diffusion of uniform gas and electrochemical reaction on conversion zone and produces electric power.
Thus, the performance of fuel cell can be improved, and the restriction electric current that can increase fuel cell is close
Degree, thus compared with relevant prior art, can be with high-power operation.
Further, since the contact area of piston ring land portion 21b i.e. joint portion with GDL 12 is obviously reduced,
Therefore water can more easily be discharged from GDL 12, and can prevent the performance of fuel cell because of
Overflow in high current range and reduce.
Here, can include by enterprising in flat metal sheets for manufacturing the technique of flow-field plate 21
Row etching and piercing process form multiple hole 21d of repeat patterns.
Metallic plate can include corrosion resistant plate, and it is the material for typical metal separation device.
Secondly, projection 21a with repeat patterns can be formed to constitute piston ring land portion 21b and knot
Conjunction portion 21c.Projection 21a can be formed with imprinted pattern, and the shape of flow-field plate 21 can be led to
Cross and utilize diel execution imprint process to complete.
Flow-field plate 21 can be incorporated into the GDL 12 of battery, and GDL 12 can be incorporated into weight
The piston ring land portion 21b that multiple pattern is prominent from a surface of flow-field plate 21.
On the other hand, the outside covering that main board 22 can be used for from battery is formed by flow-field plate 21
Reactant gas flow space.Main board 22 can be incorporated on a surface of flow-field plate 21,
This surface is contrary with another surface of the flow-field plate 21 that GDL 12 is incorporated into.
Main board 22 can be incorporated into repeat patterns prominent from another surface of flow-field plate 21
Joint portion 21c, although being shown without in the drawings, but main board 22 can also have so
A kind of structure, wherein the entrance and exit of reacting gas is longitudinally formed at its side and opposite side
On.
The entrance and exit of main board 22 is the interior of the battery pile that formed and be wherein stacked with element cell
The part of portion's manifold.Reacting gas via entrance supply can be through the stream within main board 22
Field plate 21, the unreacting gas and the by-product that flow through flow-field plate 21 can be discharged by outlet.
It addition, the flowing that wherein flow-field plate 21 is arranged between main board 22 and GDL 12 is empty
Between, it is necessary to sealed, can be along the edge of main board 22, i.e. at the main board of adjacent cell
Between the periphery of flow-field plate, arrange liner or seal member.
Thus, separator according to embodiments of the present invention, reacting gas is by perforated plate construction
Turbulence form flowing is sentenced in the flow field that flow-field plate is formed, thus is spread by uniform gas and gather
Collection (concentration), increases and enters the diffusion of GDL and be conducive to producing electricity equably.
Thus, it is possible to increase electric current density also improves the performance of fuel cell.
Therefore, it is employed at the separator being used for fuel cell according to an embodiment of the invention
Time in the flow field formed by the flow-field plate with perforated plate construction, reacting gas is with turbulent flow shape
Formula flows, thus spread by uniform gas and assemble and beneficially while Uniform power
Increase to the diffusion of GDL.Thus, it is possible to increase electric current density also improves the performance of fuel cell.
With reference to embodiments of the invention, the present invention is described.But, those of ordinary skill in the art
It should be understood that without departing from the principles and spirit of the present invention can also be to these
Embodiment carries out various amendment, and the scope of the present invention is entered by claims and equivalents thereof
Row limits.
Claims (15)
1. for a separator for fuel cell, including:
Flow-field plate, has perforated plate construction and is incorporated into the outer surface of gas diffusion layers to be formed
Reactant gas flow field；And
Main board, is incorporated into the outer surface of described flow-field plate to seal described reactant gas flow field,
Wherein said flow-field plate has projection, described projection formed while uneven texture with
Repeat patterns is prominent from two surfaces of described flow-field plate, and described flow-field plate has from institute
The most advanced and sophisticated place stating the prominent projection in a surface of flow-field plate is incorporated into gas diffusion layers
Piston ring land portion, and at the counter tip of the projection prominent from another surface of described flow-field plate
It is incorporated into the joint portion of described main board, and
Described flow-field plate is made up of the metallic plate of the monolithic with multiple hole, and described projection is by punching
Press described metallic plate, formed, each in wherein said multiple holes with the imprinted pattern that repeats
Hole is positioned on the flat face of raised face (RF), and each hole is formed as circular open.
2. separator as claimed in claim 1, multiple piston ring land portions of wherein said projection are in institute
State on a surface of flow-field plate along being front and back spaced apart from each other with left and right directions.
3. separator as claimed in claim 1, wherein said multiple holes are configured to permit instead
Gas is answered to pass through.
4. separator as claimed in claim 3, wherein said multiple holes are along front and back and right and left
To being arranged at a predetermined interval in described flow-field plate.
5. separator as claimed in claim 3, the described piston ring land portion of wherein said projection is with line
Contact condition is incorporated into gas diffusion layers.
6. separator as claimed in claim 1, wherein prominent from a surface of described flow-field plate
The other parts in addition to described piston ring land portion of the described projection gone out, and between described gas diffusion layers
Separate.
7. separator as claimed in claim 6, the side of wherein said projection and described gas
Diffusion layer is spaced apart so that reacting gas is transversely by the side of described projection and described gas
Gap between diffusion layer.
8. for a flow-field plate for fuel cell separator, including:
Perforated plate construction, has inner surface and outer surface；And
Projection, with repeat patterns from two of described flow-field plate while forming uneven texture
Surface highlights；
The piston ring land portion of wherein said inner surface is configured to the tip quilt of the projection at described inner surface
It is attached to the outer surface of gas diffusion layers to form reactant gas flow field；And
The described outer surface of wherein said perforated plate construction is configured to the projection at described outer surface
Counter tip be incorporated into main board to seal described reactant gas flow field, and
Described flow-field plate is made up of the metallic plate of the monolithic with multiple hole, and described projection is by punching
Press described metallic plate, formed, each in wherein said multiple holes with the imprinted pattern that repeats
Hole is positioned on the flat face of raised face (RF), and each hole is formed as circular open.
9. flow-field plate as claimed in claim 8, multiple piston ring land portions of wherein said projection are in institute
State on the inner surface of flow-field plate along being front and back spaced apart from each other with left and right directions.
10. flow-field plate as claimed in claim 9, wherein said multiple holes are configured to permit
Reacting gas passes through.
11. flow-field plate as claimed in claim 10, wherein said multiple holes are along front and back and left and right
Direction is arranged in described flow-field plate at a predetermined interval.
12. flow-field plate as claimed in claim 10, the described piston ring land portion quilt of wherein said projection
It is configured to be incorporated into gas diffusion layers with linear contact lay state.
13. flow-field plate as claimed in claim 8, wherein dash forward from the inner surface of described flow-field plate
The other parts in addition to described piston ring land portion of the projection gone out, spaced apart with described gas diffusion layers.
14. flow-field plate as claimed in claim 13, the side of wherein said projection is configured to
Spaced apart with described gas diffusion layers so that reacting gas is transversely by the side of described projection
And the gap between described gas diffusion layers.
15. 1 kinds of fuel cells, including:
Membrane electrode assembly；
The gas diffusion layers adjacent with described membrane electrode assembly；
Flow-field plate, have perforated plate construction and be incorporated into the outer surface of described gas diffusion layers with
Form reactant gas flow field；And
Main board, is incorporated into the outer surface of described flow-field plate to seal reactant gas flow field,
Wherein said flow-field plate has projection, described projection formed while uneven texture with
Repeat patterns is prominent from two surfaces of described flow-field plate, and described flow-field plate has from institute
The most advanced and sophisticated place stating the prominent projection in a surface of flow-field plate is incorporated into gas diffusion layers
Piston ring land portion, and at the counter tip of the projection prominent from another surface of described flow-field plate
It is incorporated into the joint portion of described main board, and
Described flow-field plate is made up of the metallic plate of the monolithic with multiple hole, and described projection is by punching
Press described metallic plate, formed, each in wherein said multiple holes with the imprinted pattern that repeats
Hole is positioned on the flat face of raised face (RF), and each hole is formed as circular open.
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2011-0091520 | 2011-09-09 | ||
| KR1020110091520A KR101241016B1 (en) | 2011-09-09 | 2011-09-09 | Seperator for fuel cell |
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| CN103000918A CN103000918A (en) | 2013-03-27 |
| CN103000918B true CN103000918B (en) | 2016-12-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401240A (en) * | 2006-01-17 | 2009-04-01 | 汉高公司 | Bonded fuel cell assembly, methods, systems and sealant compositions for producing the same |
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101401240A (en) * | 2006-01-17 | 2009-04-01 | 汉高公司 | Bonded fuel cell assembly, methods, systems and sealant compositions for producing the same |
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