CN110112435A - Electrode plate structure, monocell and fuel cell - Google Patents
Electrode plate structure, monocell and fuel cell Download PDFInfo
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- CN110112435A CN110112435A CN201910497537.6A CN201910497537A CN110112435A CN 110112435 A CN110112435 A CN 110112435A CN 201910497537 A CN201910497537 A CN 201910497537A CN 110112435 A CN110112435 A CN 110112435A
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- 239000000446 fuel Substances 0.000 title claims abstract description 40
- 238000009792 diffusion process Methods 0.000 claims abstract description 35
- 230000008676 import Effects 0.000 claims abstract description 33
- 239000012528 membrane Substances 0.000 claims abstract description 33
- 239000002826 coolant Substances 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 39
- 238000006243 chemical reaction Methods 0.000 description 18
- 239000012495 reaction gas Substances 0.000 description 17
- 239000007789 gas Substances 0.000 description 16
- 230000003197 catalytic effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000006056 electrooxidation reaction Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000000126 substance Substances 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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
- H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
-
- 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
- H01M8/0267—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
- H01M8/04082—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
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention provides a kind of electrode plate structure, monocell and fuel cells, electrode plate structure is applied to fuel cell, fuel cell further includes membrane electrode, electrode plate structure with the diffusion layer of membrane electrode for contacting, wherein electrode plate structure includes: pole plate main body, pole plate main body has the first connecting pin being oppositely arranged and second connection end, first connecting pin is contacted with diffusion layer phase, and the first connecting pin of pole plate main body is provided with first runner and second flow channel, first runner and the setting of second flow channel interval；Wherein, first runner has the first end and second end being oppositely arranged, and first end is provided with the first import, and second end is closed end；Second flow channel has the second import and second outlet being oppositely arranged.Electrode plate structure of the invention solves the problems, such as easy occluded water in the pole plate of fuel cell in the prior art and the contact area of diffusion layer.
Description
Technical field
The present invention relates to field of fuel cell technology, in particular to a kind of electrode plate structure, monocell and fuel electricity
Pond.
Background technique
The working medium of the runner internal circulation of fuel cell is the multiphase mixture of reaction gas, vapor and condensed water,
In, water enters anode and cathode runner through diffusion (passing through diffusion layer) and with gas from the reduction reaction of cathode catalysis layer
Body flowing discharge runner.The timely discharge that reaction generates water can significantly improve fuel battery performance, on the one hand avoid catalysis
The water logging of layer, so as to avoid the electrochemical corrosion of catalyst；On the other hand avoid the diffusion mass transfer for plugging reaction gas logical
Road, so as to avoid " fuel is hungry " in Catalytic Layer.
However, in actual use, it is raw that the reaction gathered in runner can be discharged in good fuel cell water management in time
Cheng Shui, but be difficult to drive away pole plate and generate water with reacting of being detained in diffusion layer phase contact area and connect especially under high current density
The occluded water in touching area easily causes the corrosion of Catalytic Layer and hinders mass transport process of the reaction gas by diffusion layer, this final limitation
The promotion of fuel battery performance and service life.Therefore, better water management strategy should can be stagnant to contact zone in fuel cell
Water is stayed to be driven, or the delay for avoiding reaction to generate water from the root.
Summary of the invention
The main purpose of the present invention is to provide a kind of electrode plate structure, monocell and fuel cells, to solve the prior art
In the pole plate of fuel cell and the contact area of diffusion layer in easy occluded water the problem of.
To achieve the goals above, according to the first aspect of the invention, a kind of electrode plate structure is provided, fuel is applied to
Battery, fuel cell further include membrane electrode, and for electrode plate structure for contacting with the diffusion layer of membrane electrode, electrode plate structure includes: pole plate
There is the first connecting pin being oppositely arranged and second connection end, the first connecting pin to contact with diffusion layer phase for main body, pole plate main body, pole
First connecting pin of plate main body is provided with first runner and second flow channel, first runner and the setting of second flow channel interval；Wherein,
First-class road has the first end and second end being oppositely arranged, and first end is provided with the first import, and second end is closed end；Second
Road has the second import and second outlet being oppositely arranged.
Further, first runner is multiple, at least one second flow channel is provided between two neighboring first runner.
Further, one or two second flow channel is provided between two neighboring first runner.
Further, the circulation area of first runner is less than the circulation area of second flow channel.
Further, the inlet pressure P of the first import1Greater than the inlet pressure P of the second import2。
Further, first runner is rectangular channel.
Further, second flow channel is rectangular channel.
Further, second connection end is provided with coolant flow channel, and coolant flow channel is U-shaped channel, and U-shaped channel has first to lead to
Road and second channel, first passage are two, and two first passages are arranged in parallel, one end of second channel and two first passages
In a first passage be connected, the other end of second channel is connected with another first passage in two first passages
It is logical；Wherein, the extending direction of first passage, the extending direction of first runner, the extending direction of second flow channel are all the same.
Further, second flow channel have the second bottom wall and two second sidewalls, two second sidewalls with the second bottom wall
The two sides of the second bottom wall are connected and are oppositely arranged on, second sidewall is vertically arranged with respect to the second bottom wall, and two second sidewalls are along
The extending direction of two runners is wave-shaped.
Further, the second bottom wall is wave-shaped along the extending direction of second flow channel.
Further, second connection end is provided with coolant flow channel, the extension side of the extending direction of coolant flow channel, first runner
It is all the same to, the extending direction of second flow channel.
Further, second connection end is provided with coolant flow channel, coolant flow channel be it is multiple, multiple coolant flow channel intervals are set
It sets.
According to the second aspect of the invention, a kind of monocell, including membrane electrode, cathode plate and anode pole are provided
Plate, cathode plate and plate are oppositely arranged on the two sides of membrane electrode, and cathode plate is electrode plate structure, wherein electrode plate structure
For above-mentioned electrode plate structure.
Further, plate is electrode plate structure.
According to the third aspect of the present invention, a kind of fuel cell, including pile are provided, pile includes multiple single electricity
Pond, multiple monocells stack setting, wherein monocell is above-mentioned monocell.
Electrode plate structure of the invention is applied to fuel cell, and fuel cell further includes membrane electrode, and electrode plate structure is used for and film
The diffusion layer of electrode contacts, and electrode plate structure includes pole plate main body, and pole plate main body includes spaced first runner and second
Road, first runner have the first end and second end being oppositely arranged, and first end is provided with the first import, and second end is closed end；
Second flow channel has the second import and second outlet being oppositely arranged.The electrode plate structure passes through interval setting first runner and second
Runner can make the rich reaction gas in first runner, reaction generate water all driven by pressure, by pole plate main body with
Contact zone between the diffusion layer of membrane electrode, seepage flow to adjacent second flow channel, and then the water being detained in contact zone is driven also to seep
It is flow to second flow channel, and then avoids in contact zone the delay that reaction generates water, also avoids Catalytic Layer because of electricity caused by water logging
Chemical attack also increases reaction gas from runner by diffusion admittance area of the diffusion layer to Catalytic Layer, can enhance gas
Mass transfer, while strengthening draining, improve battery performance.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of an angle of one embodiment of electrode plate structure according to the present invention；
Fig. 2 shows the structural schematic diagrams of another angle of one embodiment of electrode plate structure according to the present invention；
Fig. 3 shows the schematic diagram in the flow field of one embodiment of electrode plate structure according to the present invention；
Fig. 4 shows the structural schematic diagram of an angle of second embodiment of electrode plate structure according to the present invention；
Fig. 5 shows the structural schematic diagram of another angle of second embodiment of electrode plate structure according to the present invention；
Fig. 6 shows the structural schematic diagram of an angle of the third embodiment of electrode plate structure according to the present invention；
Fig. 7 shows the structural schematic diagram of another angle of the third embodiment of electrode plate structure according to the present invention；
Fig. 8 shows the structural schematic diagram of the bipolar plate structure of fuel cell according to the present invention.
Wherein, the above drawings include the following reference numerals:
10, first runner；11, the first import；20, second flow channel；21, the second import；22, second outlet；30, it contacts
Area；40, coolant flow channel.
Specific embodiment
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.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
The present invention provides a kind of electrode plate structures, please refer to Fig. 1 to Fig. 8, are applied to fuel cell, and fuel cell further includes
Membrane electrode, for electrode plate structure for contacting with the diffusion layer of membrane electrode, electrode plate structure includes: pole plate main body, and pole plate main body has phase
To the first connecting pin of setting and second connection end, the first connecting pin is contacted with diffusion layer phase, the first connecting pin of pole plate main body
It is provided with first runner 10 and second flow channel 20, first runner 10 and the setting of the interval of second flow channel 20；Wherein, first runner 10 has
There is the first end and second end being oppositely arranged, first end is provided with the first import 11, and second end is closed end；Second flow channel 20 has
There are the second import 21 and second outlet 22 being oppositely arranged.
Electrode plate structure of the invention is applied to fuel cell, and fuel cell further includes membrane electrode, and electrode plate structure is used for and film
The diffusion layer of electrode contacts, and electrode plate structure includes pole plate main body, and pole plate main body includes spaced first runner 10 and second
Runner 20, first runner 10 have the first end and second end being oppositely arranged, and first end is provided with the first import 11, and second end is
Closed end；Second flow channel 20 has the second import 21 and second outlet 22 being oppositely arranged.The electrode plate structure passes through interval setting
First runner 10 and second flow channel 20 can make the rich reaction gas in first runner 10, reaction generate water all in pressure
Under driving, by the contact zone 30 between pole plate main body and the diffusion layer of membrane electrode, seepage flow to adjacent second flow channel 20, in turn
Driving the water being detained in contact zone 30, also seepage flow and then avoids reaction in contact zone 30 and generates the stagnant of water to second flow channel 20
Stay, also avoid Catalytic Layer because of electrochemical corrosion caused by water logging, also increase reaction gas from runner by diffusion layer to urging
The diffusion admittance area for changing layer, can enhance gas transfer, while strengthening draining, improve battery performance.
Wherein, first runner 10 is the interdigital runner of port closure；Second flow channel 20 is the through-type runner of open-ended,
The two is intervally arranged.
Wherein, the arrow in Fig. 3 is the flow direction of medium.
In the present embodiment, first runner 10 is multiple, be provided between two neighboring first runner 10 at least one the
Two runners 20.
In the present embodiment, one or two second flow channel 20 is provided between two neighboring first runner 10.
When it is implemented, first runner 10 and second flow channel 20 extend along the first preset direction.
When it is implemented, the circulation area of first runner 10 is less than the circulation area of second flow channel 20.It is why such
Setting be because the reaction generation water in first runner 10 must be drained by the horizontal proliferation in contact zone 30, if the
The circulation area of one runner 10 is excessive, and generation water is more, drains burden for increasing.
Preferably, first runner 10 and second flow channel 20 are rectangular channel, along the direction perpendicular to the first preset direction, the
The width of one runner 10 is less than the width of second flow channel 20.
When it is implemented, the inlet pressure P of the first import 111Greater than the inlet pressure P of the second import 212.Such setting
It ensure that the rich reaction gas in first runner 10, reaction generate water all driven by pressure, pass through pole plate main body and film
Contact zone 30 between the diffusion layer of electrode, seepage flow to adjacent second flow channel 20.
In order to realize the inlet pressure P of the first import 111Greater than the inlet pressure P of the second import 212, 11 He of the first import
The gas passage of second import 21 is mutually isolated or the gas passage of the first import 11 and the second import 21 passes through two kinds of different gas
Valve restraining.
When it is implemented, a kind of embodiment are as follows: the first of the first runner 10 of first gas passage and electrode plate structure into
Mouthfuls 11 are connected to, with to 10 trandfer fluid of first runner；Second import of the second flow channel 20 of second gas channel and electrode plate structure
21 connections, with to 20 trandfer fluid of second flow channel.It is such that the gas passage so that first runner 10 and second flow channel 20 is set
It is mutually isolated, it is respectively set with the inlet pressure of inlet pressure and the second import 21 to the first import 11.
When it is implemented, another embodiment are as follows: the first import 11 of the first runner 10 of electrode plate structure passes through first
Branch is connected to third gas channel, and the second import 21 of the second flow channel 20 of electrode plate structure passes through second branch and third gas
Channel connection；Wherein, the first regulating valve is provided in the first branch；The second regulating valve is provided in second branch.It is such to set
Setting, which may be implemented, is respectively set the inlet pressure of the first import 11 and the inlet pressure of the second import 21.Wherein, first
Regulating valve and the second regulating valve are gas control valve.
In the present embodiment, second connection end is provided with coolant flow channel 40, and coolant flow channel 40 is multiple, multiple coolant flow channels
40 interval settings.In a particular application, if it is monocell, second connection end, which is directly contacted with cooling medium, to radiate；Such as
Fruit is pile, realizes heat dissipation between multiple monocells by being passed through cooling medium into coolant flow channel 40.
In the present embodiment, first runner 10 is rectangular channel.
In one embodiment, second flow channel 20 is rectangular channel.
When it is implemented, second connection end is provided with coolant flow channel 40, coolant flow channel 40 is U-shaped channel, and U-shaped channel has
First passage and second channel, first passage are two, and two first passages are arranged in parallel, one end of second channel with two the
A first passage in one channel is connected, another first passage in the other end of second channel and two first passages
It is connected；Wherein, the extending direction of first passage, the extending direction of first runner 10, the extending direction of second flow channel 20 are homogeneous
Together.In this embodiment, electrode plate structure is by super thin metal plate punch forming, when being stamped and formed out first runner on the first connecting pin
When 10 (rectangular channels) and second flow channel 20 (rectangular channel), it is (U-shaped logical that second connection end adaptively forms coolant flow channel 40
Road).
In the second embodiment, as shown in Figure 4 and Figure 5, second flow channel 20 has the second bottom wall and two second sidewalls,
Two second sidewalls connect with the second bottom wall and are oppositely arranged on the two sides of the second bottom wall, and second sidewall is hung down with respect to the second bottom wall
Straight setting, two second sidewalls are wave-shaped along the extending direction of second flow channel 20.When it is implemented, second connection end is arranged
There is coolant flow channel 40, the extending direction of coolant flow channel 40, the extending direction of first runner 10, the extending direction of second flow channel 20 are equal
It is identical.Such setting preferably balances the flow resistance of first runner 10 and second flow channel 20, so that in first runner 10
The reaction gas of affluence, reaction generate water all driven by pressure, pass through connecing between pole plate main body and the diffusion layer of membrane electrode
Touch area 30, seepage flow to adjacent second flow channel 20.
In third embodiment, as shown in Figure 6 and Figure 7, second flow channel 20 has the second bottom wall and two second sidewalls,
Two second sidewalls connect with the second bottom wall and are oppositely arranged on the two sides of the second bottom wall, and second sidewall is hung down with respect to the second bottom wall
Straight setting, two second sidewalls are wave-shaped along the extending direction of second flow channel 20, and the second bottom wall prolongs along second flow channel 20
It is wave-shaped to stretch direction.When it is implemented, second connection end is provided with coolant flow channel 40, the extending direction of coolant flow channel 40,
Extending direction, the extending direction of second flow channel 20 of one runner 10 are all the same.Such setting preferably balances first runner 10
With the flow resistance of second flow channel 20, all driven in pressure so that the rich reaction gas, reaction in first runner 10 generate water
Under dynamic, by the contact zone 30 between pole plate main body and the diffusion layer of membrane electrode, seepage flow to adjacent second flow channel 20.
In the present embodiment, pole plate main body punch forming.
Fig. 1,2 are the electrode plate structure being stamped and formed out using super thin metal plate, and wherein Fig. 1 is the structure chart of gas flow side,
Fig. 2 is the back side of Fig. 1, and the structure chart of side is flowed for cooling medium.In fact, fuel cell design is not required for yin, yang pole plate
Structure type having the same.Electrode plate structure of the invention is mainly for cathode plate (because of the draining task weight of cathode plate).
Plate can be designed as identical structure (as shown in figure 8, the bipolar plates that two pieces of identical electrode plate structures are welded together to form
Structure), it may be designed in different structure.In Fig. 8, anode and cathode gas flowfield be it is interdigital lead directly to compound flow field, and cool down
Medium flow field be it is through-type, cooling medium is from one end in total coolant flow channel as shown in Figure 8 into another to bring out.Wherein, total cold
But runner is oppositely arranged by the coolant flow channel 40 of two pieces of electrode plate structures.
Fig. 8 show cathode plate between the membrane electrode of the two neighboring monocell of fuel cell according to the present invention and
The cooperation figure of plate, i.e. bipolar plate structure.
Electrode plate structure in the present invention is applied on Proton Exchange Membrane Fuel Cells.Contact zone 30 closely connects with membrane electrode
Touching, the contact zone 30 can become flowing " dead zone " to a certain extent, and reaction generates water and generates behind this region, unless meeting with film
Electrode dehydration, is otherwise difficult to be discharged.On the one hand, ponding increases gas transfer resistance, reduces the utilization rate of membrane electrode；It is another
Aspect, permanent ponding will lead to the corrosion of Catalytic Layer.Using electrode plate structure of the invention, in inlet design, first runner
10 and second flow channel 20 have different inlet pressures.
In fuel cell operations, the stream pressure of first runner 10 is higher, can drive reaction gas more than needed and
Reaction generates water and diffuses to adjacency channel by the very thin porous medium layer in contact zone 30.In order to avoid excessive in first runner 10
Reaction generate water by contact zone 30 carry out horizontal proliferation discharge cause biggish discharge pressure, first runner 10 is relatively narrow,
It need only can achieve the purpose that pressure-driven drains in contact area.Electrode plate structure of the invention can play raising fuel
The purpose of battery life and performance.For specific design conditions, first runner 10 and in flow field structure of the present invention
The size and ratio of two runners 20 should carry out calculation and check according to the running parameter of specific fuel cell.
The present invention, which solves to react in contact zone 30 between fuel battery pole board and membrane electrode (porous diffusion layer), generates water
It is detained or is discharged difficult technical problem.Using electrode plate structure of the invention, the generation water energy in contact zone 30 is enough in reaction gas
Under the driving of body circulating pressure, adjacent second flow channel 20 is drained into, and then as battery is discharged in swiftly flowing reaction gas.In work
During work, rich reaction gas, reaction generate water all driven by pressure in interdigital flow field, pass through electrode plate structure and film electricity
Contact zone 30 between the diffusion layer of pole, seepage flow to adjacent straight-through runner thus avoid and react generation in contact zone 30
The delay of water.
Beneficial effects of the present invention: it avoids reaction and generates water contact zone between pole plate and the porous diffusion layer of membrane electrode
Delay in 30, and then Catalytic Layer is avoided because of electrochemical corrosion caused by water logging, it also increases reaction gas and passes through from runner
Diffusion layer improves battery performance to the diffusion admittance area of Catalytic Layer.
In order to confirm the feasibility of above scheme, a computing unit (including second flow channel 20 and adjacent is had chosen
Two first runners 10) simulated, the inlet pressure of second flow channel 20 is low pressure inlet, and outlet is set as pressure export,
The inlet pressure of two first runners 10 is high-pressure inlet, latter end closing, the flow region of first runner 10 and second flow channel 20
It is in close contact with membrane electrode, membrane electrode region is porous media region.Model configuration shows that the fluid in first runner 10 is being pressed
It can be permeated by membrane electrode under power drive, into second flow channel 20.Contact zone 30 forms apparent direction second
The barometric gradient in road 20, this exactly drives the power of liquid water discharge in " flow dead zone ".
The present invention also provides a kind of monocell, including membrane electrode, cathode plate and plate, cathode plate and anode
Pole plate is oppositely arranged on the two sides of membrane electrode, and cathode plate is electrode plate structure, wherein electrode plate structure is the pole in above-described embodiment
Hardened structure.Such setting can be improved fuel battery service life and performance.
In one embodiment, plate is electrode plate structure.
In another embodiment, plate includes plate main body, and plate main body, which has, to be oppositely arranged
Third connecting pin and the 4th connecting pin, third connecting pin are in contact with membrane electrode, and is formed between third connecting pin and membrane electrode
Three runners, third flow channel have the third import being oppositely arranged and third outlet；Wherein, third flow channel is multiple, multiple thirds
The setting of runner interval.
The present invention also provides a kind of fuel cell, including pile, pile includes multiple monocells, and multiple monocells stack
Setting, wherein monocell is the monocell in above-described embodiment.
It can be seen from the above description that the above embodiments of the present invention realized the following chievements:
Electrode plate structure of the invention is applied to fuel cell, and fuel cell further includes membrane electrode, and electrode plate structure is used for and film
The diffusion layer of electrode contacts, and electrode plate structure includes pole plate main body, and pole plate main body includes spaced first runner 10 and second
Runner 20, first runner 10 have the first end and second end being oppositely arranged, and first end is provided with the first import 11, and second end is
Closed end；Second flow channel 20 has the second import 21 and second outlet 22 being oppositely arranged.The electrode plate structure passes through interval setting
First runner 10 and second flow channel 20 can make the rich reaction gas in first runner 10, reaction generate water all in pressure
Under driving, by the contact zone 30 between pole plate main body and the diffusion layer of membrane electrode, seepage flow to adjacent second flow channel 20, in turn
Driving the water being detained in contact zone 30, also seepage flow and then avoids reaction in contact zone 30 and generates the stagnant of water to second flow channel 20
Stay, also avoid Catalytic Layer because of electrochemical corrosion caused by water logging, also increase reaction gas from runner by diffusion layer to urging
The diffusion admittance area for changing layer, can enhance gas transfer, while strengthening draining, improve battery performance.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to herein
Sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
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, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (15)
1. a kind of electrode plate structure, be applied to fuel cell, the fuel cell further includes membrane electrode, the electrode plate structure be used for
The diffusion layer of the membrane electrode contacts, which is characterized in that the electrode plate structure includes:
Pole plate main body, the pole plate main body have the first connecting pin being oppositely arranged and second connection end, first connecting pin
It being contacted with the diffusion layer phase, the first connecting pin of the pole plate main body is provided with first runner (10) and second flow channel (20),
The first runner (10) and the setting of the second flow channel (20) interval；
Wherein, the first runner (10) has the first end and second end that is oppositely arranged, the first end be provided with first into
Mouth (11), the second end are closed end；There is the second flow channel (20) the second import (21) and second being oppositely arranged to go out
Mouth (22).
2. electrode plate structure according to claim 1, which is characterized in that the first runner (10) be it is multiple, it is two neighboring
At least one described second flow channel (20) is provided between the first runner (10).
3. electrode plate structure according to claim 2, which is characterized in that be arranged between the two neighboring first runner (10)
There is one or two described second flow channel (20).
4. electrode plate structure according to claim 1, which is characterized in that the circulation area of the first runner (10) is less than institute
State the circulation area of second flow channel (20).
5. electrode plate structure according to claim 1, which is characterized in that the inlet pressure P of first import (11)1It is greater than
The inlet pressure P of second import (21)2。
6. electrode plate structure according to claim 1, which is characterized in that the first runner (10) is rectangular channel.
7. electrode plate structure according to claim 6, which is characterized in that the second flow channel (20) is rectangular channel.
8. electrode plate structure according to claim 7, which is characterized in that the second connection end is provided with coolant flow channel
(40), the coolant flow channel (40) is U-shaped channel, and the U-shaped channel has first passage and second channel, the first passage
It is two, two first passages are arranged in parallel, described in one in one end of the second channel and two first passages
First passage is connected, and the other end of the second channel is connected with another described first passage in two first passages
It is logical；
Wherein, the extending direction of the first passage, the extending direction of the first runner (10), the second flow channel (20)
Extending direction is all the same.
9. electrode plate structure according to claim 6, which is characterized in that the second flow channel (20) has the second bottom wall and two
A second sidewall, two second sidewalls connect with second bottom wall and are oppositely arranged on the two of second bottom wall
Side, relatively described second bottom wall of the second sidewall are vertically arranged, and two second sidewalls are along the second flow channel (20)
Extending direction is wave-shaped.
10. electrode plate structure according to claim 9, which is characterized in that second bottom wall is along the second flow channel (20)
Extending direction it is wave-shaped.
11. electrode plate structure according to claim 9 or 10, which is characterized in that the second connection end is provided with cooling stream
Road (40), the extending direction of the coolant flow channel (40), the extending direction of the first runner (10), the second flow channel (20)
Extending direction it is all the same.
12. electrode plate structure according to claim 1, which is characterized in that the second connection end is provided with coolant flow channel
(40), the coolant flow channel (40) is multiple, multiple coolant flow channel (40) interval settings.
13. a kind of monocell, including membrane electrode, cathode plate and plate, the cathode plate and the plate phase
To the two sides that the membrane electrode is arranged in, the cathode plate is electrode plate structure, which is characterized in that the electrode plate structure is right
It is required that electrode plate structure described in any one of 1 to 12.
14. monocell according to claim 13, which is characterized in that the plate is the electrode plate structure.
15. a kind of fuel cell, including pile, the pile includes multiple monocells, and multiple monocells stack setting,
It is characterized in that, the monocell is monocell described in any one of claim 13 or 14.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910497537.6A CN110112435A (en) | 2019-06-10 | 2019-06-10 | Electrode plate structure, monocell and fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910497537.6A CN110112435A (en) | 2019-06-10 | 2019-06-10 | Electrode plate structure, monocell and fuel cell |
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| CN201910497537.6A Pending CN110112435A (en) | 2019-06-10 | 2019-06-10 | Electrode plate structure, monocell and fuel cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111029610A (en) * | 2019-11-11 | 2020-04-17 | 珠海格力电器股份有限公司 | Hydrogen fuel cell bipolar plate and hydrogen fuel cell |
| CN111048801A (en) * | 2019-12-04 | 2020-04-21 | 珠海格力电器股份有限公司 | Air-cooled hydrogen fuel cell based on single metal polar plate and electric pile |
| CN114551922A (en) * | 2022-03-02 | 2022-05-27 | 重庆理工大学 | Fuel cell bipolar plate structure and fuel cell |
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| KR20170013589A (en) * | 2015-07-28 | 2017-02-07 | 주식회사 엘지화학 | Separator, and Fuel cell stack comprising the same |
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| CN103053057A (en) * | 2010-07-15 | 2013-04-17 | 丰田自动车株式会社 | Fuel cell |
| KR20170013589A (en) * | 2015-07-28 | 2017-02-07 | 주식회사 엘지화학 | Separator, and Fuel cell stack comprising the same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111029610A (en) * | 2019-11-11 | 2020-04-17 | 珠海格力电器股份有限公司 | Hydrogen fuel cell bipolar plate and hydrogen fuel cell |
| CN111048801A (en) * | 2019-12-04 | 2020-04-21 | 珠海格力电器股份有限公司 | Air-cooled hydrogen fuel cell based on single metal polar plate and electric pile |
| CN114551922A (en) * | 2022-03-02 | 2022-05-27 | 重庆理工大学 | Fuel cell bipolar plate structure and fuel cell |
| CN114551922B (en) * | 2022-03-02 | 2024-02-20 | 重庆理工大学 | Fuel cell bipolar plate structure and fuel cell |
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