CN106654316B - A kind of novel cathode runner suitable for aerospace static water removal - Google Patents
A kind of novel cathode runner suitable for aerospace static water removal Download PDFInfo
- Publication number
- CN106654316B CN106654316B CN201611030099.5A CN201611030099A CN106654316B CN 106654316 B CN106654316 B CN 106654316B CN 201611030099 A CN201611030099 A CN 201611030099A CN 106654316 B CN106654316 B CN 106654316B
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- China
- Prior art keywords
- cathode
- water removal
- static water
- flow channels
- valve
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Classifications
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- 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
- H01M8/04—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
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
-
- 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
A kind of novel cathode runner suitable for aerospace static water removal, comprising: cathode plate (1), static water removal valve (2), cathode flow channels (3)；Cathode flow channels (3) are the groove type channel in cathode plate (1) plane；Air flow inlet, air stream outlet are had at (1) two parallel sides of cathode plate, it is connected between gas access and gas vent by cathode flow channels (3), static water removal valve (2) is distributed in cathode flow channels (3) side wall；Static water removal valve (2) is hydrophilic material in circuit control lower swing, the material of static water removal valve (2)；The proton exchange membrane of Proton Exchange Membrane Fuel Cells is covered on the side that cathode plate (1) is provided with cathode flow channels (3).The present invention is conducive to static water removal, improves film water caused by fuel cell long-term work and floods phenomenon, promotes fuel battery performance.
Description
Technical field
The present invention relates to a kind of fuel cell cathode flow channels.
Background technique
Proton Exchange Membrane Fuel Cells (Proton Exchange Membrane Fuel Cell, abbreviation PEMFC) is combustion
Expect one kind of battery, hydrogen is diffused into anode catalyst layer from anode diffusion layer, is dissociated into proton and electricity herein by anode flow channel
Son, electronics return to cathode by external circuit, and proton is diffused into cathode by proton exchange membrane, the oxygen generated with cathode catalysis layer
Son and electronics release electric energy and thermal energy by chemical reaction generation water.
Under high current density or the lesser situation of air velocity, reactants water is saturated in cathode to be condensed PEMFC, leads to yin
Pole water logging can not reach cathode catalysis layer by film cathode diffusion layer and electrochemical reaction occurs so that reaction gas is unevenly distributed,
Battery performance is caused to decline.
The problems such as fuel cell water management at present, it is insufficient that there are drainage arrangement stability, and fluid distrbution is uncontrollable in runner,
The prior arts such as needle-shaped guiding device are installed in fuel cell to be had on improving drainage effect and promotion fuel cell drainage efficiency
It is short of.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of suitable for aerospace static state row
The novel cathode runner of water, does not change cathode plate body configuration, can allow a variety of runner types, not only has diversity, more
Have good practicability, be conducive to static water removal, improves film water caused by fuel cell long-term work and flood phenomenon, promote fuel cell
Performance.
The technical scheme adopted by the invention is that: a kind of novel cathode runner suitable for aerospace static water removal, comprising: yin
Pole pole plate, static water removal valve, cathode flow channels；Cathode flow channels are the groove type channel in cathode plate plane；Cathode plate two
Air flow inlet, air stream outlet are had at parallel sides, are connected between gas access and gas vent by cathode flow channels, it is quiet
State drain valve is distributed in cathode flow channels side wall；Static water removal valve is hydrophilic in circuit control lower swing, the material of static water removal valve
Property material；The proton exchange membrane of Proton Exchange Membrane Fuel Cells is covered on the side that cathode plate is provided with cathode flow channels.
The static water removal valve includes axis body, valve body, valve automatically controlled circuit；Valve body is rectangle laminated structure, side
It is fixed with axis body；Axis body is mounted on cathode flow channels side wall, in the control lower swing of valve automatically controlled circuit.
The cathode flow channels gas access, gas outlet groove respectively with gas be not provided on cathode plate enter
Mouth, the side of gas vent are parallel.
The cathode flow channels gas access, gas outlet groove between connecting passage consist of two parts, one
Part is the main groove section parallel with gas access, the side of gas vent is not provided on cathode plate, recessed based on another part
Communication groove section between slot section.
Communication groove section between the main groove section is vertical with main groove section.
The static water removal valve be uniformly distributed in cathode flow channels or along cathode flow channels from gas access to gas vent by
Gradually encryption distribution, sweep angular range between valve body and cathode flow channels recess sidewall angle from 0 ° to 90 °.
The height of the axis body is consistent with cathode flow channels depth of groove.
It is deposited between the proton exchange membrane covered on the valve body edge and cathode plate, between cathode flow channels groove floor
In gap.
The advantages of the present invention over the prior art are that:
(1) compared with original Proton Exchange Membrane Fuel Cells, original proton exchange membrane produces the present invention in the course of work
Raw water is more and more, although a part can be discharged with gas, once water-vapo(u)r saturation, droplets form is in proton exchange membrane table
Face reduces and participates in the effective area that reaction gas is contacted with diffusion layer Catalytic Layer, reduces reaction rate；The present invention is in cathode pole
Static water removal valve is installed on plate, is conducive to static water removal, improves film water caused by fuel cell long-term work and floods phenomenon, promote combustion
Expect battery performance.
(2) static water removal valve of the present invention is swept around its installation axle, and water droplet is taken away film by its hydrophilicity during sweeping
Surface.Installing default conditions is that the i.e. draining valve body of normally open is consistent with fluid flow direction in runner, and valve sweeps maximum shape
State is that draining valve body is vertical with recess sidewall；Valve body sweeps angle and is recommended as 0 °~90 °, and a sweeping period finishes, extensive
Default conditions are arrived again, are conducive to air-flow and are taken away the water droplet collected on valve body.
(3) static water removal valve of the invention is fixed on cathode plate, is located in the lesser runner of camber, installation axle
Close to one of side wall, the length direction l of valve body is less than runner groove width L, and the short transverse h of valve body is less than the runner
Height H；Installation number can be laid out according to actual condition, according to duty parameter can uniform layout in runner, can also be from entering
Mouth is installed into the runner of outlet and is gradually encrypted, and the water on static water removal valve effectively can be taken away cathode by gas, improves effect
Rate.
(4) present invention can apply to the design of aerospace fuel cell cathode flow channel, it also can be widely applied to ground fuel
In cell cathode flow channel design.The hydrophilic function of taking away film surface water droplet is realized using static water removal valve, because its surface area is bigger,
There is better drainage effect；Electrically-controlled valve structural reform becomes draining valve body rotation direction, can real-time control sweeping frequency according to different operating conditions
Rate sweeps angle etc., can cooperate a variety of runner forms, more controllability and practicability.The processing is simple for static water removal valve, promotes electricity
Cost is effectively controlled while the performance of pond.
Detailed description of the invention
Fig. 1 is that static water removal valve defaults normally open；
Fig. 2 is that static water removal valve sweeps maximum rating；
Fig. 3 is that static water removal threshold switch state sweeps area two-dimensional schematic diagram；
Fig. 4 is static water removal valve configuration picture；
Fig. 5 is static water removal valve arrangement dimensional drawing.
Specific embodiment
Below with reference to diagram, the present invention will be further described.
A kind of novel cathode runner suitable for aerospace static water removal is as shown in Figure 1, comprising: cathode plate 1, static water removal
Valve 2, cathode flow channels 3.Cathode flow channels 3 are the groove type channel in 1 plane of cathode plate；At 1 two parallel sides of cathode plate
Air flow inlet, air stream outlet are had, is connected between gas access and gas vent by cathode flow channels 3, static water removal valve 2
It is distributed in 3 side wall of cathode flow channels；Static water removal valve 2 is hydrophily material in circuit control lower swing, the material of static water removal valve 2
Material；The proton exchange membrane of Proton Exchange Membrane Fuel Cells is covered on the side that cathode plate 1 is provided with cathode flow channels 3.
Cathode flow channels 3 gas access, gas outlet groove respectively be not provided on cathode plate 1 gas access,
The side of gas vent is parallel.Cathode flow channels 3 gas access, gas outlet groove between connecting passage by two parts
Composition, a part are the main groove section parallel with gas access, the side of gas vent is not provided on cathode plate 1, another portion
The communication groove section being divided between main groove section.Communication groove section between main groove section is vertical with main groove section.
As shown in figure 4, static water removal valve 2 includes axis body 21, valve body 22, valve automatically controlled circuit 23；Valve body 22 is rectangular
Shape laminated structure, side and axis body 21 are fixed；Axis body 21 is mounted on 3 side wall of cathode flow channels, in the control of valve automatically controlled circuit 23
Lower swing.The height of axis body 21 is consistent with 3 depth of groove of cathode flow channels.The matter covered on 22 edge of valve body and cathode plate 3
Between proton exchange, there are gaps between 3 groove floor of cathode flow channels.
As shown in Figure 4, Figure 5, fuel cell cathode plate runner design configuration, the size in conjunction with runner include slot
Wide, groove depth etc. carries out the design of static water removal valve 2, and axis body 21 and valve body 22 should be noted that valve body 22 and axis body 21 connect when designing
Meet selection such as Fig. 5 institute of the side length h of height H, valve body 22 side parallel with axis body 21 of side and the width l of valve body 22
Show.
H is consistent with groove depth, i.e., the static water removal valve 2 is pre-installed on cathode plate 1, when installation, the contact of 21 end of axis body
Film surface is played a supporting role.The size of h should be slightly less than H, and upper and lower ends are not concordant with 21 end face of axis body, avoid
Film surface is scratched during sweeping, while ensuring not influence to have been formed water droplet and film surface is taken away by valve body 22.The size of l is not answered
More than groove width L, avoid during sweeping with conduit peripheral collision, do not answer yet it is too small, cause sweep sectorial area it is small, influence quiet
State drainage effect.Valve body 22 is controlled by valve circuit-line to sweep, and sweeps angular range between valve body 22 and recess sidewall
Angle is from 0 ° to 90 °, as shown in Figure 3.
The layout of static water removal valve 2 should fully consider fuel cell operating condition in runner, consider fluid flow state in runner,
Static water removal valve 2, which is uniformly distributed in cathode flow channels 3 or gradually encrypts along cathode flow channels 3 from gas access to gas vent, to be divided
Cloth.
Working principle:
The static water removal valve 2 that the present invention is suitable for aerospace static water removal novel cathode runner is installed on cathode plate 1, electricity
Dynamic control static water removal valve 2, which changes, sweeps direction.Proton Exchange Membrane Fuel Cells is energy conversion device, by the chemical energy of fuel
It is converted into electric energy, its working principle is that hydrogen is diffused into anode catalyst layer from anode diffusion layer, is dissociated herein by anode flow channel
At proton and electronics, electronics returns to cathode by external circuit, and proton is diffused into cathode by proton exchange membrane, with cathode catalysis layer
The oxygen molecule and electronics of generation generate water by chemical reaction, release electric energy and thermal energy.The stream of the cathode flow channels of fuel cell
Body distribution has crucial decisive role to the power of fuel cell.When working long hours, the accumulation of product steam is gradually satisfied
With condense into water droplet, aerospace weightlessness in the case where, random airflow is distributed in runner everywhere, to avoid water droplet from excessively causing water
It floods, while it is dry damaged with film to avoid quick flow from taking away film caused by water droplet, it is ensured that the cathode terminal of proton exchange membrane remains suitable
Humidity and steady flow condition are spent, proposes static water removal valve of the invention, it is static to be suitable for aerospace fuel battery negative pole pole plate
Draining.As shown in Figure 2 and Figure 3, proton exchange membrane is not contacted in 2 vertical direction of static water removal valve, avoids scratching proton when its sweeping
Exchange film surface.Static water removal valve 2 is water wetted material, and the water droplet of condensation is sucked away from film surface, each sweeping during sweeping
After movement, it is i.e. identical as flow direction in runner that static water removal valve 2 returns to default location, by air-flow by static water removal valve 2
On water droplet take away, taken to step by step to downstream by each static water removal valve 2, until discharge fuel cell.Sweep frequency: booting is extremely
It is not swept in stable work time；Steady operation starts to shutdown, sweep frequency depend on cathode plate runner overall configuration with
And operating condition relationship, including inlet and outlet flow velocity, Membrane catalysis characteristic etc..
The present invention can reinforce fuel cell water management ability, promote static water removal controllability and fuel battery negative pole draining effect
Rate can cooperate a variety of runner types to use, more diversity.
Unspecified part of the present invention belongs to technology well known to those skilled in the art.
Claims (7)
1. a kind of novel cathode runner suitable for aerospace static water removal characterized by comprising cathode plate (1), static row
Water valve (2), cathode flow channels (3)；Cathode flow channels (3) are the groove type channel in cathode plate (1) plane；Cathode plate (1) two
Air flow inlet, air stream outlet are had at parallel sides, between gas access and gas vent even by cathode flow channels (3)
Logical, static water removal valve (2) is distributed in cathode flow channels (3) side wall；Static water removal valve (2) is in circuit control lower swing, static water removal
The material of valve (2) is hydrophilic material；The proton exchange membrane of Proton Exchange Membrane Fuel Cells is covered on cathode plate (1) and is provided with yin
The side of pole runner (3)；
The static water removal valve (2) includes axis body (21), valve body (22), valve automatically controlled circuit (23)；Valve body (22) is rectangular
Shape laminated structure, side and axis body (21) are fixed；Axis body (21) is mounted on cathode flow channels (3) side wall, in valve automatically controlled circuit
(23) control lower swing；The water droplet of condensation is sucked away from film surface, each sweeping movement during sweeping by static water removal valve (2)
Later, it is i.e. identical as flow direction in runner to return to default location for static water removal valve (2), by air-flow by static water removal valve (2)
On water droplet take away, taken to step by step to downstream by each static water removal valve (2), until discharge fuel cell.
2. a kind of novel cathode runner suitable for aerospace static water removal according to claim 1, it is characterised in that: described
Cathode flow channels (3) are not provided with gas access, gas on cathode plate (1) respectively in the groove of gas access, gas outlet
The side of outlet is parallel.
3. a kind of novel cathode runner suitable for aerospace static water removal according to claim 2, it is characterised in that: described
Cathode flow channels (3) gas access, gas outlet groove between connecting passage consist of two parts, a part be and yin
The parallel main groove section in side of gas access, gas vent is not provided on pole pole plate (1), another part is between main groove segment
Communication groove section.
4. a kind of novel cathode runner suitable for aerospace static water removal according to claim 3, it is characterised in that: described
Communication groove section between main groove section is vertical with main groove section.
5. a kind of novel cathode runner suitable for aerospace static water removal according to claim 4, it is characterised in that: described
Static water removal valve (2) is uniformly distributed or is gradually added along cathode flow channels (3) from gas access to gas vent cathode flow channels (3) are inner
Close distribution, sweeping angular range between valve body (22) and cathode flow channels (3) recess sidewall angle from 0 ° to 90 °.
6. a kind of novel cathode runner suitable for aerospace static water removal according to claim 2, it is characterised in that: described
The height of axis body (21) is consistent with cathode flow channels (3) depth of groove.
7. a kind of novel cathode runner suitable for aerospace static water removal according to claim 6, it is characterised in that: described
It is deposited between the proton exchange membrane covered on valve body (22) edge and cathode plate (1), between cathode flow channels (3) groove floor
In gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030099.5A CN106654316B (en) | 2016-11-15 | 2016-11-15 | A kind of novel cathode runner suitable for aerospace static water removal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030099.5A CN106654316B (en) | 2016-11-15 | 2016-11-15 | A kind of novel cathode runner suitable for aerospace static water removal |
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| CN106654316A CN106654316A (en) | 2017-05-10 |
| CN106654316B true CN106654316B (en) | 2019-05-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111177920B (en) * | 2019-12-27 | 2023-09-15 | 格罗夫氢能源科技集团有限公司 | Method and terminal for designing fuel cell flow channel |
| CN113381037B (en) * | 2020-09-03 | 2022-05-10 | 青岛科技大学 | Hydrophobic flow guide polar plate of fuel cell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019263A (en) * | 2005-09-28 | 2007-08-15 | 株式会社东芝 | Fuel cell and fuel cell system |
| JP2009087844A (en) * | 2007-10-02 | 2009-04-23 | Nissan Motor Co Ltd | Structure of a power generation cell for a fuel cell and wetting method for power generation cell |
| CN101552343A (en) * | 2009-04-29 | 2009-10-07 | 清华大学 | Micro PEMFC cathode plate with the capillary drainage structure and its production method |
| CN101752578A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院大连化学物理研究所 | Method for improving water removal effectiveness of proton exchange membrane fuel battery |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3524305B2 (en) * | 1996-12-03 | 2004-05-10 | 本田技研工業株式会社 | Fuel cell |
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2016
- 2016-11-15 CN CN201611030099.5A patent/CN106654316B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101019263A (en) * | 2005-09-28 | 2007-08-15 | 株式会社东芝 | Fuel cell and fuel cell system |
| JP2009087844A (en) * | 2007-10-02 | 2009-04-23 | Nissan Motor Co Ltd | Structure of a power generation cell for a fuel cell and wetting method for power generation cell |
| CN101752578A (en) * | 2008-12-19 | 2010-06-23 | 中国科学院大连化学物理研究所 | Method for improving water removal effectiveness of proton exchange membrane fuel battery |
| CN101552343A (en) * | 2009-04-29 | 2009-10-07 | 清华大学 | Micro PEMFC cathode plate with the capillary drainage structure and its production method |
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