CN208955112U - A kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape - Google Patents
A kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape Download PDFInfo
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- CN208955112U CN208955112U CN201821786335.0U CN201821786335U CN208955112U CN 208955112 U CN208955112 U CN 208955112U CN 201821786335 U CN201821786335 U CN 201821786335U CN 208955112 U CN208955112 U CN 208955112U
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- runner
- air inlet
- reaction gas
- interdigitated
- outlet
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- 210000003462 vein Anatomy 0.000 title claims abstract description 28
- 239000000446 fuel Substances 0.000 title claims abstract description 24
- 239000012528 membrane Substances 0.000 title claims abstract description 20
- 230000009977 dual effect Effects 0.000 title claims abstract description 14
- 239000012495 reaction gas Substances 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 210000000481 breast Anatomy 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 239000000376 reactant Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 241000270295 Serpentes Species 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 230000034964 establishment of cell polarity Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Fuel Cell (AREA)
Abstract
The utility model relates to a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape, including bipolar plates ontology, interdigitated flow field is provided on the bipolar plates ontology, the interdigitated flow field is in subcircular, using flow field central point as the center of circle, the interdigitated flow field includes the local flow field for being divided into n equal portions, n >=2, the interdigitated flow field includes reaction gas inlet, reaction gas outlet and vein shape gas flow, the vein shape runner includes air inlet runner and flow channel out, the reaction gas inlet is set to the outer end of the air inlet runner, the reaction gas outlet is set to the outer end of the gas outlet runner, the reaction gas inlet is in be arranged alternately with reaction gas outlet circumferential arrangement, air inlet runner is alternately distributed discontinuous in round upper and air inlet runner and a flow channel out with flow channel out.By using above-mentioned technical proposal, reaction gas can be evenly distributed to bipolar plates ontology everywhere, reaction gas is enable to be evenly distributed in reactive flowfield.
Description
Technical field
The utility model relates to dual polar plates of proton exchange membrane fuel cell, in particular to a kind of circle bionical based on vein shape
The dual polar plates of proton exchange membrane fuel cell of the interdigitated flow field structure of dish type.
Background technique
Proton Exchange Membrane Fuel Cells (Proton Exchange Membrane Fuel Cell, PEMFC) has because of it
The advantages that energy transformation ratio is high, pollution-free, starting is fast and there is considerable market application prospect.Compared with heat engine, fuel cell
Chemical energy be directly translated into electric energy, do not need primary transformants into thermal energy.Therefore, conversion is not limited by Carnot cycle, theoretical
On the high efficiency of 90% conversion may be implemented.
The core of fuel cell is membrane electrode and bipolar plates.Membrane electrode is the place of electrochemical reaction；Bipolar plates provide gas
Body distribution and collected current, in order to complete gas distribution and this two tasks of collected current, bipolar plates are usually conductive, table
There are concave-convex two parts in face, wherein protrusion part (collected current spine) is used to contact with electrode, collected current；Negative area
(flow field) provides channel to electrode surface transmitting for gas, this part for containing concaveconvex structure of bipolar plates claims flow field.
In fact, the capacity efficiency of fuel cell is heavily dependent on the structure of bipolar plate flow field, good flow field
Structure can improve the flow regime of reactant and product, make electrode that can obtain reactant in time everywhere, and can be in time
Cooling water is excluded, the generating efficiency of fuel cell is improved.
There are parallel flow field, snake type flow field and interdigitated flow field in the flow field of common dual polar plates of proton exchange membrane fuel cell.
One remarkable advantage of parallel flow field is that the overall presure drop between gas feed and outlet is lower, but works as the width in flow field relatively
When big, the fluid distrbution in each flow field will appear non-uniform phenomenon, this will cause the accumulation of the water of partial region, cause
The increase for transmitting consume, to reduce current density.
The advantages of snake type flow field, is drainability, and single flow path can push the discharge of liquid water.But in large area
Flow field in, the pressure drop in snake type flow field is very big, and Gas concentration distribution is uneven.
The design in interdigitated flow field promotes forced convertion of the reaction gas in diffusion layer, and the effect of water management is far excellent
In parallel flow field and snake type flow field, but the forced convertion in gas diffusion layers causes very big pressure drop to be lost.Current existing skill
In art, since the interdigitated flow field pressure drop of tradition is big, when battery output services, reactant distribution is uneven, cause reactant and
The utilization rate of motor reduces, to will affect the stability of electric current output.
Leaf vein texture widely exists in the Nature, is the product of nature long-term evolution, therefore in terms of mass transfer transport
There are many excellent characteristics, with bionic development, more and more researchers are applied to scientific research.
Utility model content
In conclusion in order to overcome the deficiencies of the prior art, it is uniform that the utility model provides a kind of reactant distribution, electrode
The high interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape of utilization rate.
To achieve the above object, the utility model provides following technical solution: a kind of interdigitated matter of disc vein shape
Proton exchange film fuel cell bipolar plates, including bipolar plates ontology are provided with interdigitated flow field, the friendship on the bipolar plates ontology
Finger-type flow field is in subcircular, and using flow field central point as the center of circle, the interdigitated flow field includes the local flow for being divided into n equal portions
, n >=2, the interdigitated flow field includes reaction gas inlet, reaction gas outlet and vein shape gas flow, the vein shape stream
Road includes air inlet runner and flow channel, the reaction gas inlet are set to the outer end of the air inlet runner, the reaction gas out
Outlet is set to the outer end of the gas outlet runner, and the reaction gas inlet is in replace to set with reaction gas outlet circumferential arrangement
It sets, air inlet runner is alternately distributed discontinuous in round upper and air inlet runner and a flow channel out with flow channel out.
Pressure drop can be reduced using n reaction gas inlet by using above-mentioned technical proposal, keep reaction gas uniform
Be distributed in reactive flowfield；It using vein shape runner, is distributed runner in diffusivity, reaction gas can be evenly distributed to bipolar
Plate ontology is everywhere.
The utility model is further arranged: the air inlet runner includes air inlet trunk runner and air inlet branch flow passage, described
Air inlet branch flow passage is arranged concentrically on the air inlet trunk runner, the air inlet trunk runner and the air inlet branch flow passage phase
Connection, the flow channel out includes outlet trunk runner and outlet branch flow passage, and the outlet branch flow passage is arranged concentrically in institute
It states on outlet trunk runner, the outlet trunk runner is connected with the outlet branch flow passage, the reaction gas inlet and institute
It states reaction gas outlet and is provided with seal groove.
By using above-mentioned technical proposal, circular configuration is more advantageous to the heat management of battery, the heat that electrochemical reaction generates
Amount is spread around by the center of circle, and branch flow passage keeps current density more uniform, so that integrated fuel is electric using being arranged concentrically
The electrochemistry in pond can be promoted；Runner discontinuously forces gases under pressure effect and participates in reaction across diffusion layer, improves
Seal groove is arranged to promote the performance of battery in the utilization rate and cell power density of gas, reaction gas when preventing assembly
Leakage.
The utility model is further arranged: the air inlet runner includes three air inlet trunk runners and multiple air inlet affluent-dividings
Road, the flow channel out includes three outlet trunk runners and multiple outlet branch flow passages, reacts the road intercommunication of outlet main stream.
By using above-mentioned technical proposal, multiterminal import, flow channel length shortens, and can reduce pressure drop, and multiple flow passages setting passes through
Pressure difference enhances gaseous exchange and diffusivity in effective area, to promote the performance of battery.
The utility model is further arranged: the width of runner everywhere is equal.
It is easy to process by using above-mentioned technical proposal, reduce cost.
The utility model is further arranged: width of flow path, flow channel depth are equal with back width.
By using above-mentioned technical proposal, structure is simple, and stability is strong.
The utility model is further arranged: the width of flow path is 0.6~1mm, and the flow channel depth is 0.6~1mm, institute
Stating back width is 0.6~1mm.
By using above-mentioned technical proposal, the percent opening in this flow field is 50% or so, prevents the excessively high increase battery of percent opening
Ohmic polarization loss or the too low utilization rate for reducing reactant of percent opening.
The utility model is further arranged: face where runner bosom is same plane.
By using above-mentioned technical proposal, face where runner bosom is same plane, it is easier to process, reduce cost.
Specific embodiment of the present invention is described with reference to the accompanying drawings and embodiments.
Detailed description of the invention
Fig. 1 is the planar structure schematic diagram of the utility model embodiment；
Fig. 2 is the three dimensional structure diagram of the utility model embodiment；
Fig. 3 is the three dimensional structure diagram of the utility model embodiment local flow field；
Fig. 4 is the cell polarization curves comparison diagram of the utility model embodiment.
Appended drawing reference: 1. bipolar plates ontologies, 11. interdigitated flow fields, 111. local flow fields, 2. reaction gas inlets, 3. reactions
Gas outlet, 4. vein shape gas flows, 41. air inlet runners, 411. air inlet trunk runners, 412. air inlet branch flow passages, 42. outlets
Runner, 421. outlet trunk runners, 422. outlet branch flow passages, 5. seal grooves.
Specific embodiment
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Referring to attached drawing 1-4, a kind of interdigitated proton exchange membrane of disc vein shape disclosed in technical solutions of the utility model
Fuel battery double plates, including bipolar plates ontology 1 are provided with interdigitated flow field 11 on the bipolar plates ontology 1, described interdigitated
Flow field 11 is in subcircular, and using flow field central point as the center of circle, the interdigitated flow field 11 includes the local flow field for being divided into n equal portions
1, n >=2, the interdigitated flow field 11 includes reaction gas inlet 2, reaction gas outlet 3 and vein shape gas flow 4, the vein
Shape runner includes air inlet runner 41 and flow channel 42, the reaction gas inlet 2 are set to the outer end of the air inlet runner, institute out
The outer end that reaction gas outlet 3 is set to the gas outlet runner is stated, the reaction gas inlet 2 exports 3 circumference with the reaction gas
In being arranged alternately, air inlet runner 41 is alternately distributed and air inlet runner 41 upper in a circle and flow channel out with flow channel 42 out for arrangement
42 is discontinuous.
Technical solutions of the utility model are further arranged: the air inlet runner 41 includes air inlet trunk runner 411 and air inlet
Branch flow passage 412, the air inlet branch flow passage 412 are arranged concentrically on the air inlet trunk runner 411, the air inlet main stream
Road 411 is connected with the air inlet branch flow passage 412, and the flow channel 42 out includes outlet trunk runner 421 and outlet branch
Runner 422, the outlet branch flow passage 422 are arranged concentrically on the outlet trunk runner 421, the outlet trunk runner
421 are connected with the outlet branch flow passage 422, and the reaction gas inlet 2 and reaction gas outlet 3 are provided with seal groove
5。
Technical solutions of the utility model are further arranged: the air inlet runner 41 include n air inlet trunk runner 411 with it is more
A air inlet branch flow passage 412, the flow channel 42 out include n outlet trunk runner 421 and multiple outlet branch flow passages 422,
React 421 intercommunication of outlet main stream road.
In technical solutions of the utility model, a local flow field 1 includes an air inlet trunk runner 411, multiple air inlets point
412, outlet trunk runners 421 of branch flow passage and multiple outlet branch flow passages 422.
Technical solutions of the utility model are further arranged: 411 width of air inlet trunk runner and 421 width of outlet trunk runner
It is equal.
Technical solutions of the utility model are further arranged: 412 width of air inlet branch flow passage and 411 width of air inlet trunk runner
It is equal.Outlet branch flow passage 422 is equal with outlet trunk 421 width of runner.
Technical solutions of the utility model are further arranged: multiple air inlet branch flow passages 412 and multiple outlet branch flow passages 422
From circular outer ring to inner ring classification fire wall.
Easy to process in technical solutions of the utility model, preferred further setting: the width of runner everywhere is equal.
Technical solutions of the utility model are further arranged: width of flow path, flow channel depth are equal with back width.
Technical solutions of the utility model are further arranged: the width of flow path is 0.6~1mm, and the flow channel depth is 0.6
~1mm, the back width are 0.6~1mm.
Technical solutions of the utility model are further arranged: face where runner bosom is same plane.
Technical solutions of the utility model are further arranged: this bipolar plates in use, reaction gas from reaction gas into
Mouth 2 enters bipolar plate runner, and reaction gas is evenly distributed to air inlet branch flow passage 412 by air inlet trunk runner 411, is being pressed
Power acts on lower convection current and is distributed to diffusion layer, and is further by convection into outlet branch flow passage 422, then be pooled to outlet trunk runner
421, finally from 3 discharge of reaction gas outlet.
Technical solutions of the utility model are further arranged: this bipolar plates is hydrogen using Anodic reaction gas, and cathode is anti-
Answering gas is air or oxygen.
Technical solutions of the utility model are further arranged: the bipolar plates of shown Proton Exchange Membrane Fuel Cells can be by graphite material
Material or metal material are made.
" vein shape flow field " described herein refers to imitation vein, using an import, the structure of multiple branch flow passages.
The experiment condition of the cell polarization curves comparison diagram of attached drawing Fig. 4 is referring to following table.
1 operating parameter of table
| Parameter | Numerical value |
| Operating pressure (Pa) | 101325 |
| Operation temperature (K) | 343 |
| Quality of anode flow (kg/s) | 7×10-6 |
| Anode humidity | 100% |
| Anode discharge pressure (Pa) | 2500 |
| Cathode quality flow (kg/s) | 1.43×10-5, 6.59 × 10-5 |
| Anode humidity | 100% |
Although being used more herein: bipolar plates ontology 1, interdigitated flow field 11, local flow field 111, reaction gas inlet
2, reaction gas outlet 3, vein shape gas flow 4, air inlet runner 41, air inlet trunk runner 411, air inlet branch flow passage 412, outlet
Runner 42, outlet trunk runner 421, outlet branch flow passage 422, the equal terms of seal groove 5, but be not precluded using other terms
Possibility.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；It is construed as
Any additional limitation is all contrary to the spirit of the present invention.
Claims (7)
1. a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape, including bipolar plates ontology, described bipolar
Interdigitated flow field is provided on plate ontology, it is characterised in that: the interdigitated flow field is in subcircular, is circle with flow field central point
The heart, the interdigitated flow field include the local flow field for being divided into n equal portions, n >=2, the interdigitated flow field include reaction gas into
Mouthful, reaction gas outlet and vein shape gas flow, the vein shape runner include air inlet runner and flow channel out, the reaction gas
Import is set to the outer end of the air inlet runner, and the reaction gas outlet is set to the outer end of the flow channel out, the reaction
With reaction gas outlet circumferential arrangement in being arranged alternately, air inlet runner is alternately distributed on a circle with flow channel out for gas import
And air inlet runner and flow channel out are discontinuous.
2. a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape according to claim 1, special
Sign is: the air inlet runner includes air inlet trunk runner and air inlet branch flow passage, the air inlet branch flow passage be arranged concentrically in
On the air inlet trunk runner, the air inlet trunk runner is connected with the air inlet branch flow passage, and the flow channel out includes
Outlet trunk runner and outlet branch flow passage, the outlet branch flow passage is arranged concentrically on the outlet trunk runner, described
Outlet trunk runner is connected with the outlet branch flow passage, the reaction gas inlet and the reaction gas outlet be provided with it is close
Sealing groove.
3. a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape according to claim 2, special
Sign is: the air inlet runner includes n air inlet trunk runner and multiple air inlet branch flow passages, and the flow channel out includes n
Outlet trunk runner and multiple outlet branch flow passages react the road intercommunication of outlet main stream.
4. a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape according to claim 1, special
Sign is: the width of runner everywhere is equal.
5. a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape according to claim 1, special
Sign is: width of flow path, flow channel depth are equal with back width.
6. a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape according to claim 5, special
Sign is: the width of flow path is 0.6~1mm, and the flow channel depth is 0.6~1mm, and the back width is 0.6~1mm.
7. a kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape according to claim 1, special
Sign is: face where runner bosom is same plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786335.0U CN208955112U (en) | 2018-10-31 | 2018-10-31 | A kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786335.0U CN208955112U (en) | 2018-10-31 | 2018-10-31 | A kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208955112U true CN208955112U (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821786335.0U Expired - Fee Related CN208955112U (en) | 2018-10-31 | 2018-10-31 | A kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape |
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| Country | Link |
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| CN (1) | CN208955112U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326802A (en) * | 2018-10-31 | 2019-02-12 | 温州大学激光与光电智能制造研究院 | A kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape |
-
2018
- 2018-10-31 CN CN201821786335.0U patent/CN208955112U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326802A (en) * | 2018-10-31 | 2019-02-12 | 温州大学激光与光电智能制造研究院 | A kind of interdigitated dual polar plates of proton exchange membrane fuel cell of disc vein shape |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 |