CN104795574B - Metal double polar plates, the fuel cell of fuel cell - Google Patents
Metal double polar plates, the fuel cell of fuel cell Download PDFInfo
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- CN104795574B CN104795574B CN201510175090.2A CN201510175090A CN104795574B CN 104795574 B CN104795574 B CN 104795574B CN 201510175090 A CN201510175090 A CN 201510175090A CN 104795574 B CN104795574 B CN 104795574B
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- 239000002184 metal Substances 0.000 title claims abstract description 181
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 181
- 239000000446 fuel Substances 0.000 title claims abstract description 71
- 239000007789 gas Substances 0.000 claims abstract description 30
- 239000002737 fuel gas Substances 0.000 claims abstract description 26
- 230000001590 oxidative effect Effects 0.000 claims abstract description 22
- 239000000110 cooling liquid Substances 0.000 claims abstract description 17
- 239000012528 membrane Substances 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 31
- 239000002826 coolant Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/22—Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M2004/8678—Inert electrodes with catalytic activity, e.g. for fuel cells characterised by the polarity
- H01M2004/8694—Bipolar electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The present invention provides a kind of metal double polar plates of fuel cell, fuel cells.The metal double polar plates of the fuel cell include anode metal plate and cathodic metal plate, and anode metal plate and cathodic metal plate are the identical metal polar plate of structure；Metal polar plate has first surface and second surface, has the parallel arrangement of first flow being stamped and formed out on first surface, has the parallel arrangement of second flow channel being stamped and formed out on second surface；Cathodic metal plate is stacked with anode metal plate, and the second flow channel on the second surface of cathodic metal plate and the second flow channel on the second surface of anode metal plate fasten to form cooling liquid flowing channel；First flow in anode metal plate is fuel gas runner, and the first flow on cathodic metal plate is oxidizing gas runner.Applying the technical scheme of the present invention can solve the problems, such as that the cell stack power density of fuel cell in the prior art is low and causes battery local attenuation serious since cell stack temperature is unevenly distributed.
Description
Technical field
The present invention relates to field of generating equipment, in particular to a kind of metal double polar plates of fuel cell, fuel electricity
Pond.
Background technology
Fuel cell is a kind of power generator for the features such as having both environmental-friendly, efficient work, long service life.With proton
For exchange film fuel battery (PEMFC), fuel gas (hydrogen) enters inside battery from the anode-side of battery, and hydrogen atom is in sun
Pole becomes proton after losing electronics, and proton passes through the proton exchange membrane of inside battery to reach cell cathode, while electronics is via outer
Portion circuit also reaches the cathode of battery, and in the cathode side of battery, proton, electronics are combined with oxygen generates water.
Fuel cell converts chemical energy to electric energy using on-fuel mode, due to not by thermodynamic (al) Carnot cycle work
Make the limitation of principle, directly may be up to 45% using the generating efficiency that chemical energy generates electricity.Fuel cell is with battery pile
For the power generator of core, fuel cell system is integrated with the modules such as power management, heat management, and there is heat, electricity, water, gas to unite
The characteristics of raising management.Fuel cell system product is from fixed power station, to mobile power supply；From electric vehicle, spaceship is arrived；
From military hardware, have a wide range of applications space to the product for civilian use.
In fuel cell structure, generally bipolar plates are built up multiple batteries heap successively with membrane electrode, to be formed
The higher power generator of power.
Fig. 1 be stack structure for fuel battery schematic diagram, the fuel cell pack by the first bipolar plates 1, the first membrane electrode 3 (MEA),
Second bipolar plates 2 and the second membrane electrode 4 (MEA) stack together successively, wherein the upper table of the first bipolar plates 1 and the second bipolar plates 2
Face is anode, and the lower surfaces of the first bipolar plates 1 and the second bipolar plates 2 is cathode, the first membrane electrode 3 and the second membrane electrode 4 it is upper
Surface is cathode, and the lower surface of the first membrane electrode 3 and the second membrane electrode 4 is anode.Membrane electrode (the first membrane electrode 3 and the second film
Electrode 4) be electrochemical reaction generation place, membrane electrode is made of catalyst layer (generally Pt/C) and proton exchange membrane.It is double
It is carved with runner on pole plate (the first bipolar plates 1 and the second bipolar plates 2), to evenly distribute reaction gas.
In existing design, fuel cell generally uses graphite bi-polar plate (the first bipolar plates 1 and second of Carving Machining
Bipolar plates 2).Fig. 2 is the cross section structure schematic diagram figure of the graphite bi-polar plate of Carving Machining, and the first bipolar plates 1 are cloudy by anode plate 11
Pole plate 12 forms, and circulation of the anode plate runner 13 for fuel hydrogen is carved on anode plate 11, on the side of cathode plate 12
Circulation of the first cathode plate runner 14 for oxidant gas (air or oxygen) is carved, the engraving the in the other side of cathode plate 12
Two cathode plate runners 15 for coolant liquid (deionized water) circulation.Fig. 3 is the membrane electrode cross section structure of fuel cell, is shown in figure
Go out the anode gas diffusion layer 31 of the first membrane electrode 3, anode catalyst layer 32, proton exchange membrane 33, cathode catalyst layer 34,
Cathode gas diffusion layer 35.Fig. 4 is the pile cross section structure schematic diagram of existing fuel cell.
Existing graphite bi-polar plate in order to constitute anode plate runner 13, the first cathode plate runner 14, the second cathode plate runner 15,
It needs to ensure that bipolar plates have certain mechanical strength simultaneously, thus causes the thickness of bipolar plates thicker, stacked in multiple batteries
When at fuel cell pack, the thicker bipolar plates of multilayer stack larger so as to cause the total volume of battery pile, reduce battery pile
Power density.Existing fuel cell also has the metal double polar plates formed by ultra-thin metallic plate punch forming, to improve battery
The power density of heap.However, the gas flow and cooling liquid flowing channel due to bipolar plates in the prior art are concave-convex on the contrary, ensureing
Under the premise of gas flowfield uniform (i.e. gas flow is evenly distributed after gas flow punch forming), it is difficult to it is uniform to form flow field
Cause battery local attenuation serious so as to cause the temperature distributing disproportionation of battery pile in coolant liquid flow field.
Invention content
It is existing to solve the main purpose of the present invention is to provide a kind of metal double polar plates of fuel cell, fuel cell
The cell stack power density of fuel cell is low in technology and causes battery local attenuation tight since cell stack temperature is unevenly distributed
The problem of weight.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of metal double polar plates of fuel cell,
Including anode metal plate and cathodic metal plate, anode metal plate and cathodic metal plate are the identical metal polar plate of structure；Metal pole
Plate has first surface and second surface, has the parallel arrangement of first flow being stamped and formed out, second surface on first surface
It is upper that there is the parallel arrangement of second flow channel being stamped and formed out, and second flow channel is line flowing channel, second flow channel is handed over first flow
Fork setting, and the depth of second flow channel is less than the depth of first flow；Cathodic metal plate is stacked with anode metal plate, and cathode gold
The second surface of the second surface and anode metal plate that belong to plate is relative to each other, the second flow channel on the second surface of cathodic metal plate
It fastens to form cooling liquid flowing channel with the second flow channel on the second surface of anode metal plate；First flow in anode metal plate is
Fuel gas runner, the first flow on cathodic metal plate are oxidizing gas runner.
Further, second flow channel is arranged with first flow square crossing.
Further, punch forming has the lug bosses of multiple lower hollows on metal polar plate, between two neighboring lug boss
First flow is formed, the hollow bottom of the lug boss of anode metal plate and the hollow bottom of the lug boss of cathodic metal plate are detained
Connection is closed, and is connected to cooling liquid flowing channel to form coolant liquid flow field.
Further, each first flow includes the air inlet runner being sequentially connected to, straight channel and goes out flow channel, each inlet air flow
The first end of road and corresponding multiple straight channels is connected to, the second end of multiple straight channels with it is corresponding go out flow channel connection.
Further, each first flow includes that an air inlet runner being sequentially connected to, three straight channels go out air-flow with one
Road.
Further, punch forming has seal convexity on metal polar plate, and seal convexity is consistent with the protrusion direction of lug boss,
First flow is arranged at second flow channel in seal convexity area defined.
Further, first positioning hole and second location hole are offered on metal polar plate.
According to another aspect of the present invention, a kind of fuel cell is provided, there is stacked multiple batteries heap, each battery pile
Include metal double polar plates, metal double polar plates are metal double polar plates above-mentioned.
Further, fuel cell further includes multiple membrane electrodes, and metal double polar plates are folded between two neighboring membrane electrode,
The seal convexity and lug boss of anode metal pole plate are in sealing contact with one of two neighboring membrane electrode membrane electrode, cathode
The seal convexity and lug boss of metallic plate are in sealing contact with another membrane electrode.
Further, there is gasket seal between seal convexity and corresponding membrane electrode.
It applies the technical scheme of the present invention, anode metal plate and cathodic metal plate are the identical metal polar plate of structure, metal
First flow and second flow channel it have been stamped and formed out on pole plate, and second flow channel and first flow are arranged in a crossed manner (i.e. in fuel cell
Cooling liquid flowing channel is the second flow channel), via second flow channel circulation coolant liquid can it is more rapid, equably by fuel cell
The heat generated in self-energy conversion process, to extend the service life of fuel cell.Further, due to the use of metal pole
Inner components of the plate as fuel cell so that the volume of the battery pile of fuel cell greatly reduces, to preferably improve
The power density of fuel cell.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 shows the structural schematic diagram of the battery pile of the fuel cell of the prior art；
Fig. 2 shows the schematic cross-sectional views of the graphite bi-polar plate of the fuel cell pack of the prior art；
Fig. 3 shows the cross section structure schematic diagram of the membrane electrode of the fuel cell pack of the prior art；
Fig. 4 shows the cross section structure schematic diagram of the battery pile of the fuel cell of the prior art；
Fig. 5 shows the structural schematic diagram of the embodiment of the first surface of the anode metal plate of the fuel cell of the present invention；
Fig. 6 shows the structural schematic diagram of the embodiment of the second surface of the cathodic metal plate of the fuel cell of the present invention；
Fig. 7 shows the cross section structure signal that anode metal plate, membrane electrode and the cathodic metal plate of the present invention is sequentially stacked
Figure；
Fig. 8, which is shown, to be arranged after the anode metal plate of the present invention and cathodic metal plate are stacked between two neighboring membrane electrode
Cross section structure schematic diagram；
Fig. 9 shows the distribution schematic diagram in the coolant liquid flow field on the second surface of the metal polar plate of Fig. 5；
Figure 10 shows that anode metal plate fastens the distribution schematic diagram in the coolant liquid flow field to be formed with cathodic metal plate.
Wherein, above-mentioned attached drawing includes the following drawings label：
100, anode metal plate；101, fuel gas runner；
200, cathodic metal plate；201, oxidizing gas runner；
102, cooling liquid flowing channel；
106, lug boss；001, air inlet runner；
002, straight channel；003, go out flow channel；
103, seal convexity；104, first positioning hole；
105, second location hole；300, membrane electrode；
400, gasket seal；100-102-1, anode metal plate coolant liquid flow field；
102-11, lug boss flow field；102-13, metal polar plate flow field inlet and outlet；
200-102-1, cathodic metal plate coolant liquid flow field.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 5 and Figure 6, a kind of metal double polar plates of fuel cell are present embodiments provided, the metal double polar plates packet
Include anode metal plate 100 and cathodic metal plate 200, anode metal plate 100 and cathodic metal plate 200 are the identical metal pole of structure
Plate；Metal polar plate has first surface and second surface, has the parallel arrangement of first flow being stamped and formed out on first surface,
There is the parallel arrangement of second flow channel that is stamped and formed out, and second flow channel is line flowing channel on second surface, second flow channel and the
One runner is arranged in a crossed manner, and the depth of second flow channel is less than the depth of first flow；Cathodic metal plate 200 and anode metal plate
100 is stacked, and the second surface of cathodic metal plate 200 and the second surface of anode metal plate 100 are relative to each other, cathodic metal plate
Second flow channel on 200 second surface fastens to form coolant liquid with the second flow channel on the second surface of anode metal plate 100
Runner 102；First flow in anode metal plate 100 is fuel gas runner 101, the first flow on cathodic metal plate 200
For oxidizing gas runner 201.
Anode metal plate 100 is identical with the structure of cathodic metal plate 200, thus can be rushed by a kind of mold
Pressure is process, and improves the consistency of anode metal plate 100 and cathodic metal plate 200, ensure that the performance of fuel cell
Consistency, and ensure that the service life of fuel cell, while reducing the manufacturing cost of metal polar plate.
Preferably, the depth of second flow channel is the 30%-70% of the depth of first flow.Press machine is punched in the metal polar plate
Second surface carry out twice then punching operation, first time punching operation are carried out with forming first flow on the first surface
Second of punching operation is to form second flow channel.In the inventive solutions, metal polar plate is not limited to apply punch process
A kind of mode of technique is processed metal polar plate, and the equivalent processing method of other function and effect should also be included into the technology of the present invention
The protection domain of scheme.
The fuel gas that fuel cell in the present embodiment is applied is preferably hydrogen, and oxidizing gas is preferably air.
Anode metal plate and cathodic metal plate are the identical metal polar plates of structure, and first flow and second have been stamped and formed out on metal polar plate
Runner, and second flow channel and first flow are (cooling liquid flowing channel is the second flow channel i.e. in fuel cell) arranged in a crossed manner, via the
The coolant liquid of two runners circulation can the more rapid, heat that will equably be generated in fuel cell self-energy conversion process, from
And extend the service life of fuel cell.Further, the inner components due to the use of metal polar plate as fuel cell, make
The volume for obtaining the battery pile of fuel cell greatly reduces, to preferably improve the power density of fuel cell.
In the present embodiment, second flow channel is arranged with first flow square crossing.Coolant liquid can be reduced in this way in cooling
Length of flow in liquid stream road then reduces pump consumption to reduce liquid pressure drop.
In conjunction with referring to shown in Fig. 5 and Fig. 6, Fig. 9 and Figure 10, on metal polar plate punch forming have the protrusion of multiple lower hollows
Portion 106, forms fuel gas runner 101 between two neighboring lug boss 106, the lug boss 106 of anode metal plate 100 it is hollow
Bottom be connected to the hollow bottom snap of the lug boss 106 of cathodic metal plate 200, and be connected to cooling liquid flowing channel 102 with shape
At coolant liquid flow field.After anode metal plate 100 and cathodic metal plate 200 stack together, anode metal plate 100 and cathode gold
The hollow bottom snap for belonging to the lug boss 106 on plate 200 forms chamber, and the liquid stream road 102 that is cooled between multiple chambers penetrates through,
To form netted coolant liquid flow field between anode metal plate 100 and cathodic metal plate 200.Coolant liquid flow field is to fuel
Battery has a greater degree of heat-exchange capacity, thus coolant liquid flow field can more uniformly take away the heat of fuel battery inside
Amount.
As shown in figure 9, Fig. 9 is the distribution schematic diagram in the coolant liquid flow field on the second surface of metal polar plate, i.e., anode is golden
Belong to the distribution schematic diagram of plate coolant liquid flow field 100-102-1.Anode metal plate coolant liquid flow field 100- in anode metal plate 100
The lug boss flow field 102-11 of 102-1 is formed by the hollow bottom of lug boss 106, due to cooling liquid flowing channel 102 and fuel gas
Body runner 101 is arranged in a crossed manner, therefore the liquid stream road 102 that is cooled between each lug boss flow field 102-11 penetrates through, netted to be formed
Anode metal plate coolant liquid flow field 100-102-1.Preferably, anode metal plate coolant liquid flow field 100-102-1 has multiple
102-13 is imported and exported in metal polar plate flow field, and multiple metal polar plate flow field inlet and outlet 102-13 are formed by punch process.
As shown in Figure 10, after anode metal plate 100 is stacked with cathodic metal plate 200, anode metal plate coolant liquid flow field
100-102-1 and cathodic metal plate coolant liquid flow field 200-102-1 fastens to form complete coolant flow cavity (i.e. coolant liquid
Flow field).
As shown in Figure 10, hollow arrow indicates the flow direction of coolant liquid in figure, and shows cooling liquid inlet direction
With cooling liquid outlet direction.
As shown in figure 8, each fuel gas runner 101 is corresponded with each oxidizing gas runner 201, and each fuel gas stream
It is in sealing contact between the bottom in road 101 and the bottom of corresponding oxidizing gas runner 201.Metal can be improved as much as possible in this way
The mechanical strength of bipolar plates so that fuel cell has enough intensity in the handling process, to be hardly damaged.
In conjunction with referring to shown in Fig. 5 and Fig. 6, each first flow include the air inlet runner 001 being sequentially connected to, straight channel 002 with
Go out flow channel 003, each air inlet runner 001 is connected to the first end of corresponding multiple straight channels 002, multiple straight channels 002
Second end with it is corresponding go out flow channel 003 be connected to.Fuel gas runner 101 i.e. in anode metal plate 100 includes sequentially being connected to
Fuel gas air inlet runner (air inlet runner 001), fuel gas straight channel (straight channel 002) and fuel gas go out flow channel
(going out flow channel 003), each fuel gas air inlet runner is connected to the first end of corresponding multiple fuel gas straight channels, multiple
The second end of fuel gas straight channel goes out flow channel connection with corresponding fuel gas；Oxidizing gas on cathodic metal plate 200
Runner 201 includes oxidizing gas air inlet runner (air inlet runner), oxidizing gas straight channel (straight channel 002) and the oxygen being sequentially connected to
Change gas and goes out flow channel (going out flow channel 003), each oxidizing gas air inlet runner and corresponding multiple oxidizing gas straight channels
First end is connected to, and second end and the corresponding oxidizing gas of multiple oxidizing gas straight channels go out flow channel connection, each oxidizing gas
Air inlet runner and each fuel gas air inlet runner, each oxidizing gas straight channel and each fuel gas straight channel and each oxidizing gas
Go out flow channel and go out flow channel uniform one with each fuel gas to be arranged in correspondence with.In the present embodiment, each first flow includes sequentially
Connection 001, three straight channel 002 of an air inlet runner and one go out flow channel 003.Can be to enter in fuel cell in this way
Fuel gas can more uniformly spread, carry out conversion of the chemical energy to electric energy to higher efficiency, improve chemical reaction
Rate, enhance the Functional Capability of fuel cell.
In conjunction with referring to shown in Fig. 5 to Fig. 8, on metal polar plate punch forming have seal convexity 103, first flow and second
Road is arranged in the region that seal convexity 103 is surrounded.
In the present embodiment, first positioning hole 104 and second location hole 105 are offered on metal polar plate.Work as anode metal
When plate 100 is stacked with cathodic metal plate 200, the first positioning hole in anode metal plate 100 and first on cathodic metal plate 200
Location hole is aligned, and the second location hole in anode metal plate 100 is aligned with the second location hole on cathodic metal plate.Anode metal
First-class road junction A1 and second road junction A3, first-class road junction A1 and second road junction A3 are offered on the first side of plate 100
Central symmetry about first positioning hole 104；Third flow channel mouth A2 and are offered on the second side opposite with first side
Four central symmetries of runner mouth A4, third flow channel mouth A2 and the 4th runner mouth A4 about second location hole 105.Work as anode metal plate
100 stack together with cathodic metal plate 200, i.e., the second road junction A3 and anode metal plate on cathodic metal plate 200 at this time
First-class road junction A1 on 100 overlaps to form fuel gas inlets；The 4th runner mouth A4 on cathodic metal plate 200 and anode gold
The third flow channel mouth A2 belonged on plate 100 overlaps to form fuel gas outlet.Similarly, the first flow on cathodic metal plate 200
Mouth A1 overlaps to form oxidizing gas import with the second road junction A3 in anode metal plate 100；Third on cathodic metal plate 200
Runner mouth A2 overlaps to form oxidizing gas outlet with the 4th runner mouth A4 in anode metal plate 100.Similarly, anode metal plate
100 the 5th runner mouth A5 overlaps to form cooling liquid flowing channel import with the 6th runner mouth A6 of cathodic metal plate 200；Anode metal
6th runner mouth A6 of plate 100 overlaps to form cooling liquid flowing channel outlet with the 5th runner mouth A5 of cathodic metal plate 200.Coolant liquid
The outlet of tunnel inlets and cooling liquid flowing channel be located at metal double polar plates be different from first side, second side it is other
On opposite sides side.
It, can be rapidly by anode metal plate by the alignment positioning between first positioning hole 104 and second location hole 105
100 and cathodic metal plate 200 accurately be stacked installation.Further, staff is connected by the fastening being threaded through in location hole
Anode metal plate 100 is fixedly connected by fitting with cathodic metal plate 200.
Other side according to the ... of the embodiment of the present invention provides a kind of fuel cell.The fuel cell has stacked
Multiple batteries heap, each battery pile include metal double polar plates, and metal double polar plates are metal double polar plates above-mentioned.
As shown in Figure 7 and Figure 8, fuel cell further includes multiple membrane electrodes 300, and metal double polar plates are folded in two neighboring film
Between electrode 300, seal convexity 103 and lug boss 106 are close with one of two neighboring membrane electrode 300 membrane electrode 300
Sealing-in is touched.
In this embodiment, in order to be preferably sealed between metal double polar plates and membrane electrode 300, thus seal convexity
There is gasket seal 400 between 103 and corresponding membrane electrode 300.Further, the height of seal convexity 103 and lug boss 106
Height can be equal, can also be seal convexity 103 height than lug boss 106 height small integer times gasket seal
400 thickness preferably can utilize the contact between seal convexity 103 and lug boss 106 and membrane electrode 300 to fuel in this way
The inside of battery is sealed, and the fuel gas in fuel cell and oxidizing gas leakage is avoided, to influence fuel cell
Normal work, or even fuel cell is caused to be scrapped.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of metal double polar plates of fuel cell, which is characterized in that including anode metal plate (100) and cathodic metal plate
(200), the anode metal plate (100) and the cathodic metal plate (200) are the identical metal polar plate of structure, and the anode
Metallic plate (100) is formed with the cathodic metal plate (200) by punch process；
The metal polar plate has first surface and second surface, have on the first surface be stamped and formed out it is parallel arrangement of
First flow has the parallel arrangement of second flow channel being stamped and formed out on the second surface, and the second flow channel is straight line
Runner, the second flow channel and the first flow are arranged in a crossed manner, and the depth of the second flow channel is less than the first flow
Depth；
The cathodic metal plate (200) is stacked with the anode metal plate (100), and the second of the cathodic metal plate (200)
The second surface on surface and the anode metal plate (100) is relative to each other, on the second surface of the cathodic metal plate (200)
Second flow channel fastens to form cooling liquid flowing channel (102) with the second flow channel on the second surface of the anode metal plate (100)；
First flow on the anode metal plate (100) is fuel gas runner (101), on the cathodic metal plate (200)
First flow be oxidizing gas runner (201).
2. metal double polar plates according to claim 1, which is characterized in that the second flow channel is vertical with the first flow
It is arranged in a crossed manner.
3. metal double polar plates according to claim 1 or 2, which is characterized in that there is more punch forming on the metal polar plate
The lug boss (106) of a lower hollow forms the first flow, the anode between the two neighboring lug boss (106)
The lug boss of the hollow bottom of the lug boss (106) of metallic plate (100) and the cathodic metal plate (200)
(106) hollow bottom snap connection, and the cooling liquid flowing channel (102) is connected to form coolant liquid flow field.
4. metal double polar plates according to claim 3, which is characterized in that each first flow include sequentially be connected into
Flow channel (001), straight channel (002) and go out flow channel (003), each air inlet runner (001) with it is corresponding it is multiple described in
The first end of straight channel (002) is connected to, the second end of the multiple straight channel (002) with it is corresponding described in go out flow channel (003)
Connection.
5. metal double polar plates according to claim 4, which is characterized in that each first flow includes one be sequentially connected to
Go out flow channel (003) described in a air inlet runner (001), three straight channels (002) and one.
6. metal double polar plates according to claim 3, which is characterized in that punch forming has sealing convex on the metal polar plate
It rises (103), the seal convexity (103) is consistent with the protrusion direction of the lug boss (106), the first flow and described the
Two runners are arranged in the seal convexity (103) area defined.
7. metal double polar plates according to claim 1, which is characterized in that offer first positioning hole on the metal polar plate
(104) with second location hole (105).
8. a kind of fuel cell, it includes metal double polar plates to have stacked multiple batteries heap, each battery pile, and feature exists
In the metal double polar plates are the metal double polar plates described in any one of claim 1 to 7.
9. fuel cell according to claim 8, which is characterized in that punch forming has multiple bottoms on the metal polar plate
Hollow lug boss (106) forms the first flow, the anode metal plate between the two neighboring lug boss (106)
(100) in the lug boss (106) of the hollow bottom of the lug boss (106) and the cathodic metal plate (200)
Empty bottom snap connection, and it is connected to the cooling liquid flowing channel (102) to form coolant liquid flow field, punching press on the metal polar plate
Seal convexity (103) is formed, the seal convexity (103) is consistent with the protrusion direction of the lug boss (106), and described first
Runner is arranged at the second flow channel in the seal convexity (103) area defined, and the fuel cell further includes
Multiple membrane electrodes (300), the metal double polar plates are folded between the two neighboring membrane electrode (300), the anode metal
The seal convexity (103) and the lug boss (106) of plate (100) with the two neighboring membrane electrode (300) wherein
One membrane electrode (300) is in sealing contact, the seal convexity (103) of the cathodic metal plate (200) and the protrusion
Portion (106) is in sealing contact with membrane electrode described in another (300).
10. fuel cell according to claim 9, which is characterized in that the seal convexity (103) and the corresponding film
There is gasket seal (400) between electrode (300).
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| CN106876740B (en) * | 2015-12-10 | 2023-06-23 | 上海神力科技有限公司 | Continuous production method of soft graphite bipolar plate for fuel cell |
| TWI613862B (en) * | 2016-11-30 | 2018-02-01 | 黃鎮江 | Bipolar plate inlet structure of fuel cell having drainage flow channel |
| TWI613863B (en) * | 2016-11-30 | 2018-02-01 | 黃鎮江 | Bipolar plate structure having optimized gas flow channel |
| CN108598522B (en) * | 2018-04-28 | 2023-01-31 | 上海治臻新能源股份有限公司 | Sealing structure for enhancing stability of fuel cell stack |
| CN109546158B (en) * | 2018-11-12 | 2022-05-06 | 王春龙 | Metal bipolar plate with graphene conducting layer and manufacturing method thereof |
| CN109585875A (en) * | 2018-12-05 | 2019-04-05 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator part, individual fuel cells and fuel cell pile |
| CN109786782B (en) * | 2018-12-25 | 2021-03-09 | 北京汽车集团有限公司 | Fuel cell bipolar plate, fuel cell stack and vehicle |
| CN109560305B (en) * | 2019-01-03 | 2024-02-09 | 浙江锋源氢能科技有限公司 | Metal bipolar plate and processing method |
| CN110238256B (en) * | 2019-06-03 | 2024-04-02 | 苏州方林科技股份有限公司 | Four-step stamping die and forming method for fuel cell metal bipolar plate |
| CN110265686B (en) * | 2019-06-27 | 2024-02-20 | 上海骥翀氢能科技有限公司 | Metal plate fuel cell single cell structure with long service life and reliability and electric pile |
| CN110380075A (en) * | 2019-06-28 | 2019-10-25 | 北京航天石化技术装备工程有限公司 | A kind of fuel cell pile of side air inlet |
| CN111048817A (en) * | 2019-12-12 | 2020-04-21 | 潮州三环（集团）股份有限公司 | Solid oxide fuel cell stack adopting partial countercurrent airflow distribution |
| CN111477902B (en) * | 2020-04-24 | 2023-04-07 | 上海电气集团股份有限公司 | Proton exchange membrane fuel cell bipolar plate |
| CN115939441B (en) * | 2022-12-29 | 2023-12-29 | 上海骥翀氢能科技有限公司 | Bipolar plate and fuel cell |
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| JP4857723B2 (en) * | 2005-11-16 | 2012-01-18 | 株式会社日立製作所 | Fuel cell |
| CN1996646A (en) * | 2006-12-18 | 2007-07-11 | 南京大学 | Portable fuel battery pole board |
| JP5216240B2 (en) * | 2007-05-24 | 2013-06-19 | 本田技研工業株式会社 | Fuel cell |
| CN100595957C (en) * | 2007-12-13 | 2010-03-24 | 上海交通大学 | Metal sheet profiled proton exchange membrane fuel cell bipolar plate |
| CN102683719A (en) * | 2012-05-14 | 2012-09-19 | 南京大学（苏州）高新技术研究院 | Special bipolar plate of fuel battery cathode |
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Effective date of registration: 20200820 Address after: 610097 No. 18 Xixin Avenue, Chengdu High-tech Zone, Sichuan Province Patentee after: Dongfang Electric (Chengdu) Hydrogen Fuel Cell Technology Co.,Ltd. Address before: 611731 Dongfang Electric Central Research Institute, No. 18 West core road, hi tech West District, Sichuan, Chengdu Patentee before: DONGFANG ELECTRIC Corp. |
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