CN207624812U - Fuel battery metal double polar plate and fuel cell - Google Patents
Fuel battery metal double polar plate and fuel cell Download PDFInfo
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- CN207624812U CN207624812U CN201721748583.1U CN201721748583U CN207624812U CN 207624812 U CN207624812 U CN 207624812U CN 201721748583 U CN201721748583 U CN 201721748583U CN 207624812 U CN207624812 U CN 207624812U
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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 utility model provides a kind of fuel battery metal double polar plate and fuel cell, is related to the technical field of fuel cell, including the first flow field veneer and the second flow field veneer；First flow includes the first ditch ridge and first groove, and second flow channel includes the second ditch ridge and second groove, and the height and width range of the first ditch ridge and the second ditch ridge are 100 1000 microns；The width range of first groove and second groove is 50 1000 microns；Oxidant inlet is passed through air, and air is flowed out along first flow from oxidant outlet；Fuel gas inlet is passed through hydrogen, and hydrogen is flowed out along second flow channel from fuel gas outlet；Mass transport of the gas in flow field is effectively improved, improves catalyst layer area and efficiently uses, improve the surface current density of fuel cell, improve the volumetric power density of fuel cell；Alleviate metal double polar plates existing in the prior art runner trench constrain heat and electronics conduct distance, runner ditch ridge constrain water and oxygen diffusion apart from the technical issues of.
Description
Technical field
The utility model is related to field of fuel cell technology, more particularly, to a kind of fuel battery metal double polar plate and fuel
Battery.
Background technology
Fuel cell is a kind of device that hydrogen and oxygen are generated electricity by electrochemical oxidation reactions, as people are to clear
The active demand of the clean energy, to obtain extensive concern.Fuel cell is specifically divided into alkaline fuel cell, phosphoric acid fuel electricity
Pond, molten carbonate fuel cell, high temperature solid oxide fuel cell and Proton Exchange Membrane Fuel Cells.Wherein, proton is handed over
It is typically to be alternately stacked by components such as membrane electrode, gas diffusion layers, bipolar plates to change membrane cell.
Bipolar plates in the prior art are broadly divided into graphite bi-polar plate, composite material double pole plate and metal double polar plates.Wherein,
Sheet metal has higher intensity and good conductive, heat conductivility, and the prices of raw materials are cheap and are suitble to produce in enormous quantities
Mode is the first choice of fuel cell industrialization.
But metal double polar plates in the prior art are there are bipolar plate runner fine and closely wovenization Limits properties, it is in the prior art
The runner trench of metal double polar plates constrain heat and electronics conduct distance, runner ditch ridge then constrain water and oxygen diffusion away from
From, constrain fuel cell stack volume miniaturization and functionization transformation.
Utility model content
The purpose of this utility model is to provide a kind of fuel battery metal double polar plate and fuel cells, existing to alleviate
The runner trench of metal double polar plates present in technology constrains heat and electronics conducts distance, and runner ditch ridge constrains water and oxygen
Diffusion apart from the technical issues of.
A kind of fuel battery metal double polar plate provided by the utility model, including：First flow field veneer and the second flow field are single
Plate；
First flow field veneer is fitted and connected with the second flow field veneer；
First flow field veneer is provided with multiple first flows away from the side of the second flow field veneer, and first flow includes first
Ditch ridge and first groove, the first ditch ridge and the setting of first groove interval, the height and width range of the first ditch ridge are 100-
1000 microns；The width range of first groove is 50-1000 microns；
The position that second flow field veneer corresponds to multiple first flows is provided with multiple second flow channels, and second flow channel includes second
The position of ditch ridge and second groove, the second ditch ridge and the setting of second groove interval, the second ditch ridge and the first ditch ridge corresponds, the
The height and width range of two ditch ridges are 100-1000 microns；The width range of second groove is 50-1000 microns；
It is provided through oxidant inlet, oxidation along the extending direction perpendicular to the first flow field veneer and the second flow field veneer
Agent outlet, fuel gas inlet, fuel gas outlet, cooling water inlet and cooling water outlet；Oxidant inlet and oxidant go out
Mouth is connected to by first flow；Fuel gas inlet is connected to fuel gas outlet by second flow channel；
First flow field veneer is provided with multiple first cooling water flow conduits close to the side of the second flow field veneer, and the second flow field is single
Plate is provided with multiple second cooling water flow conduits, the first cooling water flow conduits and the second cooling flow close to the side of the first flow field veneer
Road is connected to by cooling water inlet with cooling water outlet.
Further, the serpentine-like runner of multiple first flows, and first flow is provided with first entrance end and first outlet
End, first entrance end are connect with oxidant inlet, and first exit end is connect with oxidant outlet；
Multiple serpentine-like runners of second flow channel, and second flow channel is provided with second entrance end and second outlet end, second enters
Mouth end is connect with fuel gas inlet, and second outlet end is connect with fuel gas outlet, and first flow and second flow channel are used jointly
In the transmission for improving gas, water, heat and electronics.
Further, multiple first flows are provided with multiple first entrance ends and multiple first exit ends, first flow with
Multiple first diversion trenches are respectively arranged between oxidant inlet and oxidant outlet, multiple first entrance ends and multiple first go out
Mouth end is connect by multiple first diversion trenches with oxidant inlet and oxidant outlet respectively；
Multiple second flow channels are provided with multiple second entrance ends and multiple second outlet ends, and second flow channel enters with fuel gas
Multiple second diversion trenches, multiple second entrance ends and multiple second outlet ends point are respectively arranged between mouth and fuel gas outlet
It is not connect with fuel gas inlet and fuel gas outlet by multiple second diversion trenches, first flow and second flow channel are used jointly
In the transmission for improving gas, water, heat and electronics.
Further, the edge of the first flow field veneer and the second flow field veneer is provided for the chamfering of positioning.
Further, the first flow field veneer and the second flow field veneer are provided through multiple location holes, and multiple location holes are used
Positioning when the group heap of fuel cell.
Further, the area of oxidant inlet and the area of oxidant outlet be all higher than fuel gas inlet area and
The area of fuel gas outlet.
Further, the first flow field veneer and the second flow field veneer are centrosymmetric structure, oxidant inlet and oxidation
Agent exports the center symmetric setting relative to the first flow field veneer and the second flow field veneer；
The central symmetry of fuel gas inlet and fuel gas outlet relative to the first flow field veneer and the second flow field veneer
Setting；
The center symmetric setting of cooling water inlet and cooling water outlet relative to the first flow field veneer and the second flow field veneer.
Further, it is bipolar plates by conductive adhesive between the first flow field veneer and the second flow field veneer.
Further, the first ditch ridge and the second ditch ridge are made up of silk-screen printing technique.
A kind of fuel cell provided by the utility model, including the fuel battery metal double polar plate,
Fuel battery metal double polar plate is staggered with membrane electrode assembly MEA, to form fuel cell stack.
A kind of fuel battery metal double polar plate provided by the utility model, including：First flow field veneer and the second flow field are single
Plate；First flow include the first ditch ridge and first groove, the first ditch ridge and first groove interval setting, the height of the first ditch ridge and
Width range is 100-1000 microns；The width range of first groove is 50-1000 microns；Second flow field veneer corresponds to multiple
The position of first flow is provided with multiple second flow channels, and second flow channel includes the second ditch ridge and second groove, the second ditch ridge and the
Two groove intervals are arranged, and the position of the second ditch ridge and the first ditch ridge corresponds, and the height and width range of the second ditch ridge are
100-1000 microns；The width range of second groove is 50-1000 microns；In use, it is passed through sky from oxidant inlet
Gas, air are flowed out along first flow from oxidant outlet；It is passed through hydrogen from fuel gas inlet, hydrogen is along hydrogen runner from fuel
Gas vent flows out；Mass transport of the gas in flow field is can effectively improve, improves catalyst layer area and efficiently uses, to
The surface current density of fuel cell is improved, it is final to realize the volumetric power density for improving fuel cell, reduce cost；It alleviates
The runner trench of metal double polar plates existing in the prior art constrain heat and electronics conduct distance, runner ditch ridge constrain water and
Oxygen diffusion apart from the technical issues of；It is simple to realize preparation process, is easy to large-scale production, relative to precision machinery punching press
Grinding tool, the technique effect of low production cost.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the overall structure diagram for the fuel battery metal double polar plate that the utility model embodiment provides；
Fig. 2 is the signal at another visual angle of overall structure for the fuel battery metal double polar plate that the utility model embodiment provides
Figure；
Fig. 3 is the structural representation of the first flow field veneer of the fuel battery metal double polar plate that the utility model embodiment provides
Figure；
Fig. 4 is the structural representation of the second flow field veneer of the fuel battery metal double polar plate that the utility model embodiment provides
Figure；
Fig. 5 is another implementation of the first flow field veneer of the fuel battery metal double polar plate that the utility model embodiment provides
The structural schematic diagram of example；
Fig. 6 is another implementation of the second flow field veneer of the fuel battery metal double polar plate that the utility model embodiment provides
The structural schematic diagram of example；
Fig. 7 is the second cooling of the second flow field veneer of the fuel battery metal double polar plate that the utility model embodiment provides
The structural schematic diagram of water flow passage.
Icon：The first flow fields 100- veneer；The second flow fields 200- veneer；300- first flows；301- the first ditch ridges；302-
First groove；400- second flow channels；401- the second ditch ridges；402- second grooves；500- oxidant inlets；600- oxidants go out
Mouthful；700- fuel gas inlets；800- fuel gas outlets；The cooling water inlets 900-；110- cooling water outlets；120- second is cold
But water flow passage；130- first entrances end；140- first exit ends；150- second entrances end；160- second outlets end；170- first
Diversion trench；The second diversion trenches of 180-；190- chamferings；210- location holes；220- membrane electrode assemblies.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
In the description of the present invention, it should be noted that such as occur term "center", "upper", "lower", " left side ",
" right side ", "vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or member
Part must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, such as there is term " first ", " second ", " third " are used for description purposes only, be not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, such as there is term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Fig. 1 is the overall structure diagram of fuel battery metal double polar plate provided in this embodiment；Wherein, first groove
302 and second groove 402 be used to indicate conduction heat and the distance of electronics.
Fig. 2 is the schematic diagram at another visual angle of overall structure of fuel battery metal double polar plate provided in this embodiment；Wherein,
First ditch ridge 301 and the second ditch ridge 401 are for indicating conducting water and the distance of oxygen.
Fig. 3 is the structural schematic diagram of the first flow field veneer of fuel battery metal double polar plate provided in this embodiment；Wherein,
Oxidant inlet 500 is connected to oxidant outlet 600 by first flow 300.
Fig. 4 is the structural schematic diagram of the second flow field veneer of fuel battery metal double polar plate provided in this embodiment；Wherein,
Fuel gas inlet 700 is connected to fuel gas outlet 800 by second flow channel 400.
Fig. 5 is another implementation of the first flow field veneer of the fuel battery metal double polar plate that the utility model embodiment provides
The structural schematic diagram of example；Wherein, multiple first entrance ends 130 and multiple first exit ends 140 pass through multiple first water conservancy diversion respectively
Slot 170 is connect with oxidant inlet 500 and oxidant outlet 600.
Fig. 6 is the structure of another embodiment of the second flow field veneer of fuel battery metal double polar plate provided in this embodiment
Schematic diagram；Multiple first entrance ends 130 and multiple first exit ends 140 pass through multiple first diversion trenches 170 and oxidant respectively
Entrance 500 and oxidant outlet 600 connect.
Fig. 7 is the second cooling water flow conduits of the second flow field veneer of fuel battery metal double polar plate provided in this embodiment
Structural schematic diagram；Wherein, the second cooling water flow conduits 120 are connected to by cooling water inlet 900 with cooling water outlet 110.
As shown in figs. 1-7, a kind of fuel battery metal double polar plate provided in this embodiment, including：First flow field veneer 100
With the second flow field veneer 200；First flow field veneer 100 is fitted and connected with the second flow field veneer 200；First flow field veneer 100 is carried on the back
Side from the second flow field veneer 200 is provided with multiple first flows 300, and first flow 300 includes the first ditch ridge 301 and first
Groove 302, the first ditch ridge 301 and the setting of the interval of first groove 302, the height and width range of the first ditch ridge 301 are 100-
1000 microns；The width range of first groove 302 is 50-1000 microns；Second flow field veneer 200 corresponds to multiple first flows
300 position is provided with multiple second flow channels 400, and second flow channel 400 includes the second ditch ridge 401 and second groove 402, the second ditch
The position of ridge 401 and the setting of the interval of second groove 402, the second ditch ridge 401 and the first ditch ridge 301 corresponds, the second ditch ridge 401
Height and width range be 100-1000 microns；The width range of second groove 402 is 50-1000 microns；Along perpendicular to
The extending direction of first flow field veneer 100 and the second flow field veneer 200 is provided through oxidant inlet 500, oxidant outlet
600, fuel gas inlet 700, fuel gas outlet 800, cooling water inlet 900 and cooling water outlet 110；Oxidant inlet
500 are connected to oxidant outlet 600 by first flow 300；Fuel gas inlet 700 and fuel gas outlet 800 pass through
Two runners 400 are connected to；First flow field veneer 100 is provided with multiple first cooling flows close to the side of the second flow field veneer 200
Road, the second flow field veneer 200 are provided with multiple second cooling water flow conduits 120 close to the side of the first flow field veneer 100, and first is cold
But water flow passage is connected to by cooling water inlet 900 with cooling water outlet 110 with the second cooling water flow conduits 120.
Wherein, the cross sectional shape of the first flow field veneer 100 and the second flow field veneer 200 can be a variety of, such as：Rectangle,
Square, ellipse etc., preferably, the cross sectional shape of the first flow field veneer 100 and the second flow field veneer 200 is rectangle.
Preferably, first flow 300 and 400 cross sectional shape of second flow channel are rectangle.
The height and width range of first ditch ridge 301 are 100-1000 microns, preferably, the height of the first ditch ridge 301
It it is 100-300 microns with width range；The width range of first groove 302 is 50-1000 microns, preferably, second groove 402
Width range be 50-300 microns.
The height and width range of second ditch ridge 401 are 100-1000 microns, preferably, the height of the first ditch ridge 301
It it is 100-300 microns with width range；The width range of second groove 402 is 50-1000 microns, preferably, second groove 402
Width range be 50-300 microns.
Air is passed through in first groove 302, second groove 402 is passed through fuel gas, it is preferable that fuel gas uses hydrogen
Gas.
Multiple first flows 300 are horizontally disposed so that 302 horizontal interval of multiple first ditch ridges 301 and multiple first grooves
Setting；So multiple second ditch ridges 401 and multiple second grooves 402 are horizontally spaced about；Ultra-fine densification is horizontally spaced about,
Mass transport of the gas in flow field can be effectively improved, improves catalyst layer area and efficiently uses, improve fuel cell
Surface current density improves the volumetric power density of fuel cell.
Specifically, cathode plate of the first flow field veneer 100 as metal double polar plates, the second flow field veneer 200 are used as metal
The anode plate of bipolar plates.
First flow field veneer 100 both sides mutually close with the second flow field veneer 200 are respectively arranged with the first cooling water flow conduits
With the second cooling water flow conduits 120, first flow 300 can be reduced by the first cooling water flow conduits and the second cooling water flow conduits 120
With the reaction temperature in second flow channel 400, the service life of the first flow field veneer 100 and the second flow field veneer 200 is improved.
It can be to first flow 300 and second in the preparation process of the first flow field veneer 100 and the second flow field veneer 200
Road 400 carries out smooth treatment, i.e. hydrophobic treatment.When fuel cell is under 80 DEG C of (5 DEG C of positive and negative deviation) service conditions, the water of generation
It usually presents, the vapor of generation can be quickly discharged using larger pressure loss gradient so as water vapor,
It effectively prevent cathode electrode water logging.
A kind of fuel battery metal double polar plate provided in this embodiment, including：First flow field veneer 100 and the second flow field are single
Plate 200；First flow 300 includes the first ditch ridge 301 and first groove 302, and the first ditch ridge 301 and the interval of first groove 302 are set
It sets, the height and width range of the first ditch ridge 301 are 100-1000 microns；The width range of first groove 302 is 50-1000
Micron；The position that second flow field veneer 200 corresponds to multiple first flows 300 is provided with multiple second flow channels 400, second flow channel
400 include the second ditch ridge 401 and second groove 402, and the second ditch ridge 401 and the interval of second groove 402 are arranged, the second ditch ridge 401
It is corresponded with the position of the first ditch ridge 301, the height and width range of the second ditch ridge 401 are 100-1000 microns；Second
The width range of groove 402 is 50-1000 microns；In use, it is passed through air from oxidant inlet 500, air is along
One runner 300 is flowed out from oxidant outlet 600；It is passed through hydrogen from fuel gas inlet 700, hydrogen is along hydrogen runner from fuel gas
800 outflow of body outlet；Mass transport of the gas in flow field is can effectively improve, improves catalyst layer area and efficiently uses, from
And the surface current density of fuel cell is improved, and it is final to realize the volumetric power density for improving fuel cell, reduce cost；Alleviate
The runner trench of metal double polar plates existing in the prior art constrains heat and electronics conducts distance, and runner ditch ridge constrains water
With oxygen diffusion apart from the technical issues of；It is simple to realize preparation process, is easy to large-scale production, is rushed relative to precision machinery
Press grinding tool, the technique effect of low production cost.
As shown in Figure 3-4, on the basis of the above embodiments, further, fuel battery metal provided in this embodiment
Bipolar plates, 300 serpentine-like runner of multiple first flows, and first flow 300 is provided with first entrance end 130 and first exit end
140, first entrance end 130 is connect with oxidant inlet 500, and first exit end 140 is connect with oxidant outlet 600；Multiple
Two runners, 400 serpentine-like runner, and second flow channel 400 is provided with second entrance end 150 and second outlet end 160, second entrance
End 150 is connect with fuel gas inlet 700, and second outlet end 160 is connect with fuel gas outlet 800, first flow 300 and the
Two runners 400 are provided commonly for improving the transmission of gas, water, heat and electronics.
Wherein, for multiple first flows 300 as oxidant reaction flow field, multiple second flow channels 400 are anti-as fuel gas
Answer flow field.
An outermost entrance of the first entrance end 130 as serpentine flow path, passes through first entrance end 130 and oxidant
Entrance 500 connects so that oxygen can be entered along entrance in serpentine flow path, finally will be anti-by the transmission of serpentine flow path
Gas after answering connect discharge by first exit end 140 with oxidant outlet 600.
In addition, an outermost entrance of the second entrance end 150 as serpentine flow path, by second entrance end 150 with
Fuel gas inlet 700 connects so that fuel gas can be entered along entrance in serpentine flow path, pass through the biography of serpentine flow path
It passs, the gas after reaction is finally connect discharge by second outlet end 160 with fuel gas outlet 800.
Fuel battery metal double polar plate provided in this embodiment passes through one by first flow 300 in use
Entrance is connected to one outlet, and second flow channel 400 is connected to also by an entrance with one outlet, to control air and
The path of the transmission of hydrogen so that oxygen and hydrogen distribution more uniformly, can effectively improve quality of the gas in flow field
Transmission improves catalyst layer area and efficiently uses, and to improve the surface current density of fuel cell, final realize improves fuel electricity
The volumetric power density in pond, reduces cost.
As shown in Figure 3-4, further, multiple first flows 300 are provided with multiple first entrance ends 130 and multiple first
Outlet end 140 is respectively arranged with multiple first water conservancy diversion between first flow 300 and oxidant inlet 500 and oxidant outlet 600
Slot 170, multiple first entrance ends 130 and multiple first exit ends 140 are entered by multiple first diversion trenches 170 with oxidant respectively
Mouth 500 and oxidant outlet 600 connect；Multiple second flow channels 400 are provided with multiple second entrance ends 150 and multiple second outlets
End 160, is respectively arranged with multiple second water conservancy diversion between second flow channel 400 and fuel gas inlet 700 and fuel gas outlet 800
Slot 180, multiple second entrance ends 150 and multiple second outlet ends 160 pass through multiple second diversion trenches 180 and fuel gas respectively
Entrance 700 and fuel gas outlet 800 connect, first flow 300 and second flow channel 400 be provided commonly for improving gas, water, heat and
The transmission of electronics.
Wherein, the quantity of the first diversion trench 170 is corresponding with multiple first grooves 302 in first flow 300, so as to logical
Peroxide agent entrance 500 equably provides air to first flow 300 simultaneously by multiple first diversion trenches 170.
The quantity of second diversion trench 180 is corresponding with multiple second grooves 402 in second flow channel 400, so as to pass through combustion
Material gas access 700 equably provides hydrogen to second flow channel 400 simultaneously by multiple second diversion trenches 180.
Fuel battery metal double polar plate provided in this embodiment, in use, air are logical from oxidant inlet 500
Enter, and first flow 300 is entered to from a plurality of first diversion trench 170, then goes out from oxidant by a plurality of first diversion trench 170
Mouth 600 flows out；Hydrogen is passed through from fuel gas inlet 700, and enters to second flow channel 400 from a plurality of second diversion trench 180, so
It is flowed out afterwards from fuel gas outlet 800 by a plurality of second diversion trench 180, air and hydrogen can be enabled respectively in first flow
300 and second flow channel 400 in be distributed more uniformly, to enable the pressure loss of 400 end of first flow 300 and second flow channel
Reduce, barometric gradient increases.
On the basis of the above embodiments, further, the corner of the first flow field veneer 100 and the second flow field veneer 200
Place is provided for the chamfering 190 of positioning.
Wherein, chamfering 190 can be fillet can also right angle chamfering 190, preferably, chamfering 190 is set as right angle chamfering
190。
It during use, is corresponded to by the chamfering 190 of the first flow field veneer 100 and the second flow field veneer 200, to convenient
First flow field veneer 100 and the second flow field veneer 200 are located by connecting.
Further, the first flow field veneer 100 and the second flow field veneer 200 are provided through multiple location holes 210, multiple
Location hole 210 is used for positioning when fuel cell unit heap.
The quantity of location hole 210 can be two, three, four etc., preferably, the quantity of location hole 210 is four, four
Location hole 210 is located at the first flow field veneer 100 four edges corresponding with the second flow field veneer 200, can be more square
Just assembling fuel cell.
Further, the area of the area of oxidant inlet 500 and oxidant outlet 600 is all higher than fuel gas inlet
The area of 700 area and fuel gas outlet 800.
It is not purity oxygen since the gas that is passed through from oxidant inlet 500 is air, and from fuel gas inlet 700
What is be passed through is hydrogen, and this set is to there is enough amount of oxygen to be reacted with hydrogen.
Further, the first ditch ridge 301 and the second ditch ridge 401 are made up of silk-screen printing technique.
Specific manufacturing process, during making the first ditch ridge 301 and the second ditch ridge 401, first by conductive agent, surface
Activating agent, deionized water mix according to a certain percentage, and mixture is sufficiently stirred with blender, wait for conductive agent at fuzzy shape,
After surfactant-dispersed is uniform, suitable polytetrafluoroethyldispersion dispersion is added, continues to stir to obtain silk-screen printing when institute
The slurry needed.
The halftone of first flow 300 and second flow channel 400 and the slurry of appropriate viscosity are got out, to the first flow field list
Plate 100 and the second flow field veneer 200 carry out silk-screen printing in strict accordance with printing technology, and place is dried by three-stage drying tower
Reason.The the first flow field veneer 100 and the second flow field veneer 200 being completed for printing form bipolar plates by conductive adhesive.
In the present embodiment, the technique of silk-screen printing compared with prior art, can reduce mold die sinking expense, and will not
The problem of being limited by thickness limit existing for metal material self-characteristic, fine processing technique and stamping process.
Further, the first flow field veneer 100 and the second flow field veneer 200 are centrosymmetric structure, oxidant inlet
500 and center symmetric setting of the oxidant outlet 600 relative to the first flow field veneer 100 and the second flow field veneer 200；Fuel gas
Body entrance 700 and fuel gas outlet 800 are set relative to the central symmetry of the first flow field veneer 100 and the second flow field veneer 200
It sets；The center pair of cooling water inlet 900 and cooling water outlet 110 relative to the first flow field veneer 100 and the second flow field veneer 200
Claim setting.
Since the first flow field veneer 100 and the second flow field veneer 200 are centrosymmetric structure so that the first flow field veneer
100 and the second flow field veneer 200 when being fitted and connected, more convenient oxidant inlet 500 and oxidant outlet 600, fuel gas
Entrance 700 and fuel gas outlet 800 and cooling water inlet 900 and the position of cooling water outlet 110 correspond to.
Further, it is bipolar plates by conductive adhesive between the first flow field veneer 100 and the second flow field veneer 200.
A kind of fuel cell provided in this embodiment, including the fuel battery metal double polar plate, fuel battery metal
Bipolar plates are staggered with membrane electrode assembly MEA, to form fuel cell stack.
Membrane electrode assembly 200, i.e. MEA；MEA is the proton exchange membrane (PEMs) of fuel cell, catalyst and gas diffusion
The combination of layer.
Wherein, it is provided with cooling water between the first flow field veneer 100 and the second flow field veneer 200, is used for fuel cell work
Cooling when making.
220 ecto-entad of membrane electrode assembly of fuel cell provided in this embodiment is disposed with carbon paper, microporous layers, urges
Change layer and proton exchange membrane.The structural improvement of 400 ultra-fine densification of first flow 300 and second flow channel bipolar plates and gas expand
The contact between layer is dissipated, the impedance of monoreactant battery is reduced, improves the area utilization ratio of Catalytic Layer.
Due to fuel cell provided in this embodiment have multiple above-mentioned bipolar plates, generate technique effect with it is above-mentioned
The technique effect of the fuel battery metal double polar plate of offer is identical, and details are not described herein again.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of fuel battery metal double polar plate, which is characterized in that including：First flow field veneer and the second flow field veneer；
First flow field veneer is fitted and connected with second flow field veneer；
First flow field veneer is provided with multiple first flows, the first flow away from the side of second flow field veneer
Including the first ditch ridge and first groove, the first ditch ridge and first groove interval setting, the height of the first ditch ridge
It it is 100-1000 microns with width range；The width range of the first groove is 50-1000 microns；
The position that second flow field veneer corresponds to multiple first flows is provided with multiple second flow channels, the second flow channel
Including the second ditch ridge and second groove, the second ditch ridge and the second groove interval setting, the second ditch ridge with it is described
The position of first ditch ridge corresponds, and the height and width range of the second ditch ridge are 100-1000 microns；Described second
The width range of groove is 50-1000 microns；
Along perpendicular to first flow field veneer and second flow field veneer extending direction be provided through oxidant inlet,
Oxidant outlet, fuel gas inlet, fuel gas outlet, cooling water inlet and cooling water outlet；The oxidant inlet and
The oxidant outlet is connected to by the first flow；The fuel gas inlet and the fuel gas outlet pass through described
Second flow channel is connected to；
First flow field veneer is provided with multiple first cooling water flow conduits close to the side of second flow field veneer, and described
Two flow field veneers are provided with multiple second cooling water flow conduits, the first cooling flow close to the side of first flow field veneer
Road is connected to by the cooling water inlet with the cooling water outlet with second cooling water flow conduits.
2. fuel battery metal double polar plate according to claim 1, which is characterized in that multiple first flows are serpentine-like
Runner, and the first flow is provided with first entrance end and first exit end, the first entrance end enters with the oxidant
Mouth connection, the first exit end are connect with the oxidant outlet；
Multiple serpentine-like runners of the second flow channel, and the second flow channel is provided with second entrance end and second outlet end, institute
It states second entrance end to connect with the fuel gas inlet, the second outlet end is connect with the fuel gas outlet, described
First flow and the second flow channel are provided commonly for the transmission of gas, water, heat and electronics.
3. fuel battery metal double polar plate according to claim 1, which is characterized in that multiple first flows are provided with
Multiple first entrance ends and multiple first exit ends, the first flow and the oxidant inlet and the oxidant outlet it
Between be respectively arranged with multiple first diversion trenches, multiple first entrance ends and multiple first exit ends are respectively by multiple
First diversion trench is connect with the oxidant inlet and the oxidant outlet；
Multiple second flow channels are provided with multiple second entrance ends and multiple second outlet ends, the second flow channel and the combustion
Be respectively arranged with multiple second diversion trenches between material gas access and the fuel gas outlet, multiple second entrance ends and
Multiple second outlet ends pass through multiple second diversion trenches and the fuel gas inlet and the fuel gas outlet respectively
Connection, the first flow and the second flow channel are provided commonly for the transmission of gas, water, heat and electronics.
4. according to claim 1-3 any one of them fuel battery metal double polar plates, which is characterized in that first flow field is single
The edge of plate and second flow field veneer is provided for the chamfering of positioning.
5. fuel battery metal double polar plate according to claim 4, which is characterized in that first flow field veneer with it is described
Second flow field veneer is provided through multiple location holes, and multiple location holes are used for the positioning when group heap of fuel cell.
6. fuel battery metal double polar plate according to claim 1, which is characterized in that the area of the oxidant inlet and
The area of the oxidant outlet is all higher than the area of the area and the fuel gas outlet of the fuel gas inlet.
7. fuel battery metal double polar plate according to claim 6, which is characterized in that first flow field veneer and described
Second flow field veneer is centrosymmetric structure, the oxidant inlet and the oxidant outlet relative to first flow field
The center symmetric setting of veneer and second flow field veneer；
The fuel gas inlet and the fuel gas outlet are single relative to first flow field veneer and second flow field
The center symmetric setting of plate；
The cooling water inlet and the cooling water outlet are relative to first flow field veneer and second flow field veneer
Center symmetric setting.
8. fuel battery metal double polar plate according to claim 1, which is characterized in that first flow field veneer and described
Between second flow field veneer by conductive adhesive be bipolar plates.
9. fuel battery metal double polar plate according to claim 8, which is characterized in that the first ditch ridge and described second
Ditch ridge is made up of silk-screen printing technique.
10. a kind of fuel cell, which is characterized in that including such as claim 1-9 any one of them fuel battery metal double polar
Plate,
The fuel battery metal double polar plate is staggered with membrane electrode assembly MEA, to form fuel cell stack.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721748583.1U CN207624812U (en) | 2017-12-14 | 2017-12-14 | Fuel battery metal double polar plate and fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721748583.1U CN207624812U (en) | 2017-12-14 | 2017-12-14 | Fuel battery metal double polar plate and fuel cell |
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| CN207624812U true CN207624812U (en) | 2018-07-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669135A (en) * | 2018-12-29 | 2019-04-23 | 清华大学 | Fuel cell multiple spot analysis method |
| CN111477903A (en) * | 2019-12-10 | 2020-07-31 | 张国胜 | Integral dislocation assembly method of bipolar plate, fuel cell stack comprising bipolar plate and power generation system |
| CN111370728B (en) * | 2020-03-18 | 2021-03-09 | 清华大学 | Fuel cell polar plate flow field and fuel cell polar plate |
| US11973248B2 (en) | 2018-12-29 | 2024-04-30 | Tsinghua University | Method for diagnosing degradation of fuel cell stack, method for multi-point analysis of fuel cell, and method for estimating performance of fuel cell membrane electrode |
-
2017
- 2017-12-14 CN CN201721748583.1U patent/CN207624812U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669135A (en) * | 2018-12-29 | 2019-04-23 | 清华大学 | Fuel cell multiple spot analysis method |
| CN109669135B (en) * | 2018-12-29 | 2019-10-18 | 清华大学 | Fuel cell multiple spot analysis method |
| US11973248B2 (en) | 2018-12-29 | 2024-04-30 | Tsinghua University | Method for diagnosing degradation of fuel cell stack, method for multi-point analysis of fuel cell, and method for estimating performance of fuel cell membrane electrode |
| CN111477903A (en) * | 2019-12-10 | 2020-07-31 | 张国胜 | Integral dislocation assembly method of bipolar plate, fuel cell stack comprising bipolar plate and power generation system |
| CN111370728B (en) * | 2020-03-18 | 2021-03-09 | 清华大学 | Fuel cell polar plate flow field and fuel cell polar plate |
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