CN108155400A - Fuel battery double plates coolant flow field structure - Google Patents
Fuel battery double plates coolant flow field structure Download PDFInfo
- Publication number
- CN108155400A CN108155400A CN201711477448.2A CN201711477448A CN108155400A CN 108155400 A CN108155400 A CN 108155400A CN 201711477448 A CN201711477448 A CN 201711477448A CN 108155400 A CN108155400 A CN 108155400A
- Authority
- CN
- China
- Prior art keywords
- coolant flow
- flow field
- coolant
- cooling liquid
- field structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002826 coolant Substances 0.000 title claims abstract description 98
- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 239000000110 cooling liquid Substances 0.000 claims abstract description 38
- 230000007704 transition Effects 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 9
- 239000012528 membrane Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000012809 cooling fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 238000003487 electrochemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- 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
Landscapes
- 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 relates to a kind of fuel battery double plates coolant flow field structures, the coolant flow field structure setting is on bipolar plates ontology (1), including cooling liquid inlet (2), cooling liquid outlet (4), and the runner of connection cooling liquid inlet (2) and cooling liquid outlet (4), the runner is made of sequentially connected inlet transforms coolant flow channel (5), coolant sprue (3) and outlet transition coolant flow channel (6), and wherein inlet transforms coolant flow channel (5) and outlet transition coolant flow channel (6) are middle high outer low arcuate structure.Compared with prior art, fuel battery double plates coolant flow field structure of the present invention causes coolant to be uniformly distributed, and reduces the pressure drop of coolant inlet and outlet, and the output performance of battery is made more to stablize.
Description
Technical field
The present invention relates to field of fuel cell technology more particularly to a kind of fuel battery double plates coolant flow field structures.
Background technology
In order to ensure the performance of Proton Exchange Membrane Fuel Cells and service life, need to keep membrane electrode each point performance consistent, because
This needs the gas of holding membrane electrode each point to be evenly distributed, uniformity of temperature profile.If gas is distributed inconsistent, membrane electrode each point
Radiating condition is inconsistent, and membrane electrode each point actual performance can be caused to have larger difference, and branch in the middle part of membrane electrode can be caused when serious
There is hot-spot or even burn proton exchange membrane.In addition, if the extra water generated in fuel cell operation cannot be timely
It excludes, then can block runner, cause gas constricted flow.
The type of polar plate flow field mainly has serpentine flow, interdigital flow field and parallel flow field etc. at present, and serpentine flow is relatively early
It is proposed a kind of runner form, its outstanding advantages be can exclude rapidly generation liquid water, but its shortcoming it is also obvious that for
The bigger flow field of area because its flow channel length is long, bent angle is more, and so that pressure drop is big, Gas concentration distribution difference is big, corner
Easy ponding is low so as to cause system effectiveness.All gases by flow field are tended to film-electrode gas diffusion layer by interdigital flow field, are increased
Contact of the aerating body with catalyst, and liquid water gathering in gas diffusion layers is effectively avoided, but have pressure drop excessive so as to make
The shortcomings that selecting difficult and energy consumption excessively high into parts.For these problems of serpentine flow, there are many improvement patents, such as specially
Flow field is divided into major and minor flow field by profit CN03806839, although solving the problems, such as that gas concentration is poor, pressure drop is still very
Greatly.
The characteristics of pressure drop that parallel flow field has is low, but the minute differences of the flowing of gas and response situation can be right in runner
The overall performance of battery causes to disturb, and is susceptible to the unstable situation of performance.In addition to this, it is bipolar in current state of the art
Plate cooling duct is narrow, and inlet and outlet pressure drop is big, and inhomogenous to the distribution of each coolant flow channel, and bipolar plates need to provide foot
Enough thickness meets coolant circulation, so that integrated bipole plate is assembled into the entire length after pile and weight can not
It reduces.When battery output services, coolant is by coolant flow channel, since relationship of each coolant flow channel apart from entrance distance can be made
It is local so as to cause the heat that reaction generates that can not equably carry out heat exchange with coolant into the uneven of coolant distribution
The water condensation of generation is assembled and blocking portion runner, so as to cause battery failure.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of fuel battery double plates coolant flow field structures, make
It obtains coolant to be uniformly distributed, reduces the pressure drop of coolant inlet and outlet, the output performance of battery is made more to stablize.
The present invention is achieved through the following technical solutions：A kind of fuel battery double plates coolant flow field structure, this is cold
But flow field structure is arranged on bipolar plates ontology, including cooling liquid inlet, cooling liquid outlet and connection cooling liquid inlet and cold
But the runner of liquid outlet, the runner are cooled down by sequentially connected inlet transforms coolant flow channel, coolant sprue and outlet transition
Runner forms, and wherein inlet transforms coolant flow channel and outlet transition coolant flow channel are middle high outer low arcuate structure.
Further, the middle high outer low arcuate structure refers to inlet transforms coolant flow channel and outlet transition cooling stream
The cross section in road is in intermediate high, the low arc shape in both ends.
Further, the difference in height in the middle high outer low arcuate structure between the highest point and the lowest point is
1.1mm。
Cooling liquid inlet is arranged on the centre position of bipolar plates ontology one end, and cooling liquid inlet is equipped at least two drainages
Slot.Described inlet transforms coolant flow channel one end is connected with cooling liquid inlet, and the other end is connected with coolant sprue.Described
Flow field of the coolant sprue for a plurality of parallel straight channel composition.Described outlet transition coolant flow channel one end goes out with coolant
Mouth connection, the other end are connected with coolant sprue.The structure of the cooling liquid outlet is identical with cooling liquid inlet, right up and down
Title is distributed in bipolar plates ontology both ends.The bipolar plates ontology is made of anode plate and cathode plate, wherein anode plate and cathode
The face that plate fits is equipped with runner, is combined into the coolant flow field structure.The anode plate and cathode plate are graphite cake.
The coolant entered from cooling liquid inlet passes through transition coolant flow channel first so that coolant is evenly distributed in cold
But in liquid sprue.When battery generates electrochemical reaction, coolant is uniformly distributed, and promotes the equal of cathode-anode plate reaction zone
Even heat exchange, while but also coolant by cooling liquid inlet until cooling liquid outlet entire circulation passage it is smooth, pressure drop
Small, when filling high-power multi-disc pile, the pressure of whole coolant demand is smaller, and the demand to coolant recycle unit reduces,
Greatly reduce the integrated cost of pile.
Compared with prior art, beneficial effects of the present invention are：Coolant is by transition coolant flow channel in the present invention, uniformly
It is distributed to inside each runner of through-type sprue, in reaction, reaction heat carries out equal with the coolant inside sprue
Even heat exchange will not generate the phenomenon that local temperature is unevenly distributed so that and Temperature Distribution is more uniform everywhere for electrode plate surface,
So as to improve the stability of cell output to the maximum extent.In addition, be greatly reduced by the bipolar plate thickness of the invention,
Whole dress heap size reduces, and weight reduces, and fuel cell unit volume, the energy density of Unit Weight are greatly improved, manufactured
Cost can be greatly reduced with one-pass molding in aspect, bipolar plates cathode flow channels, anode flow channel and coolant flow channel.
Description of the drawings
Fig. 1 is the 3D structure diagrams of the present invention；
Fig. 2 is the structure diagram of 5 part of inlet transforms coolant flow channel of the present invention；
Fig. 3 is A-A sectional views in Fig. 2；
Fig. 4 is bipolar plate structure schematic diagram of the present invention.
In figure：1st, bipolar plates ontology, 2, cooling liquid inlet, 21, drainage trough, 3, coolant sprue, 4, cooling liquid outlet,
5th, inlet transforms coolant flow channel, 6, outlet transition coolant flow channel, 7, anode plate, 8, cathode plate.
Specific embodiment
The present invention is illustrated with reference to the drawings and specific embodiments：
As shown in Figure 1, Figure 2 and Fig. 3, a kind of fuel battery double plates coolant flow field structure, the coolant flow field structure setting is double
On pole plate ontology 1, including cooling liquid inlet 2, cooling liquid outlet 4 and the stream of connection cooling liquid inlet 2 and cooling liquid outlet 4
Road, the runner are made of sequentially connected inlet transforms coolant flow channel 5, coolant sprue 3 and outlet transition coolant flow channel 6,
Wherein inlet transforms coolant flow channel 5 and outlet transition coolant flow channel 6 are middle high outer low arcuate structure.Described is middle high outer low
Arcuate structure refers to that the cross section of inlet transforms coolant flow channel 5 and outlet transition coolant flow channel 6 is high in centre, the low shape in both ends
Design, structure as shown in Figure 2.Difference in height in described middle high outer low arcuate structure between the highest point and the lowest point is
1.1mm。
Cooling liquid inlet 2 is arranged on the centre position of 1 one end of bipolar plates ontology, and cooling liquid inlet 2 draws equipped at least two
Chute 21.Described 5 one end of inlet transforms coolant flow channel is connected with cooling liquid inlet 2, and the other end connects with coolant sprue 3
It is logical.Flow field of the coolant sprue 3 for a plurality of parallel straight channel composition.The outlet transition coolant flow channel 6 one
End is connected with cooling liquid outlet 4, and the other end is connected with coolant sprue 3.The structure and coolant of the cooling liquid outlet 4
Import 2 is identical, symmetrical above and below to be distributed in 1 both ends of bipolar plates ontology.
As shown in figure 4, the bipolar plates ontology 1 is made of anode plate 7 and cathode plate 8, wherein anode plate 7 and cathode
The face that plate 8 fits is equipped with runner, is combined into the coolant flow field structure, and 7 side of anode plate is equipped with the flow field for leading hydrogen, separately
Side is equipped with the flow field a for leading cooling fluid, and 8 side of cathode plate is equipped with the flow field for leading oxygen, and opposite side is equipped with and leads cooling fluid
The structure of flow field b, flow field a and flow field b are corresponding, and cooling fluid flow field of the present invention is constituted after bonding.The sun
Pole plate 7 and cathode plate 8 are graphite cake.
The coolant entered from cooling liquid inlet 2 passes through transition coolant flow channel 5 first so that coolant is evenly distributed in
In coolant sprue 3.When battery generates electrochemical reaction, coolant is uniformly distributed, and promotes cathode-anode plate reaction zone
Uniform heat exchange, referring to Fig. 3, while but also coolant by cooling liquid inlet 2 until the entire circulation of cooling liquid outlet 4 is logical
Road is unobstructed, and pressure drop reduces, and when filling high-power multi-disc pile, the pressure of whole coolant demand is smaller, and coolant cycle is set
Standby demand reduces, and reduces the integrated cost of pile.
Claims (10)
1. a kind of fuel battery double plates coolant flow field structure, the coolant flow field structure setting on bipolar plates ontology (1), including
Cooling liquid inlet (2), cooling liquid outlet (4) and the runner of connection cooling liquid inlet (2) and cooling liquid outlet (4), feature
It is, the runner is by sequentially connected inlet transforms coolant flow channel (5), coolant sprue (3) and outlet transition coolant flow channel
(6) it forms, wherein inlet transforms coolant flow channel (5) and outlet transition coolant flow channel (6) are middle high outer low arcuate structure.
A kind of 2. fuel battery double plates coolant flow field structure according to claim 1, which is characterized in that the middle height
Outer low arcuate structure refers to that the cross section of inlet transforms coolant flow channel (5) and outlet transition coolant flow channel (6) is high in centre, two
Hold low arc shape.
3. a kind of fuel battery double plates coolant flow field structure according to claim 1 or 2, which is characterized in that described
Difference in height in middle high outer low arcuate structure between the highest point and the lowest point is 1.1mm.
A kind of 4. fuel battery double plates coolant flow field structure according to claim 1, which is characterized in that the cooling
Liquid import (2) is arranged on the centre position of bipolar plates ontology (1) one end, and cooling liquid inlet (2) is equipped at least two drainage troughs
(21)。
A kind of 5. fuel battery double plates coolant flow field structure according to claim 1, which is characterized in that the entrance
Transition coolant flow channel (5) one end is connected with cooling liquid inlet (2), and the other end is connected with coolant sprue (3).
A kind of 6. fuel battery double plates coolant flow field structure according to claim 1, which is characterized in that the cooling
Flow field of the liquid sprue (3) for a plurality of parallel straight channel composition.
A kind of 7. fuel battery double plates coolant flow field structure according to claim 1, which is characterized in that the outlet
Transition coolant flow channel (6) one end is connected with cooling liquid outlet (4), and the other end is connected with coolant sprue (3).
A kind of 8. fuel battery double plates coolant flow field structure according to claim 1, which is characterized in that the cooling
The structure of liquid outlet (4) is identical with cooling liquid inlet (2), symmetrical above and below to be distributed in bipolar plates ontology (1) both ends.
9. a kind of fuel battery double plates coolant flow field structure according to claim 1, which is characterized in that described is bipolar
Plate ontology (1) is made of anode plate (7) and cathode plate (8), and the face that wherein anode plate (7) and cathode plate (8) fit is equipped with
Runner is combined into the coolant flow field structure.
A kind of 10. fuel battery double plates coolant flow field structure according to claim 9, which is characterized in that the sun
Pole plate (7) and cathode plate (8) are graphite cake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477448.2A CN108155400B (en) | 2017-12-29 | 2017-12-29 | Fuel cell bipolar plate cooling flow field structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711477448.2A CN108155400B (en) | 2017-12-29 | 2017-12-29 | Fuel cell bipolar plate cooling flow field structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108155400A true CN108155400A (en) | 2018-06-12 |
| CN108155400B CN108155400B (en) | 2023-12-05 |
Family
ID=62463914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711477448.2A Active CN108155400B (en) | 2017-12-29 | 2017-12-29 | Fuel cell bipolar plate cooling flow field structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108155400B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247076A (en) * | 2019-05-25 | 2019-09-17 | 天津大学 | A kind of fuel cell coolant flow field plate |
| CN110424024A (en) * | 2019-08-02 | 2019-11-08 | 华南理工大学 | It is a kind of to have both water supply and cooling difunctional pole plate and flow field for pure water SPE water electrolyzer |
| CN111313054A (en) * | 2020-04-15 | 2020-06-19 | 浙江锋源氢能科技有限公司 | Fuel cell cooling assembly and fuel cell |
| CN111916797A (en) * | 2020-08-04 | 2020-11-10 | 上海捷氢科技有限公司 | Water separator and fuel cell system |
| CN113471466A (en) * | 2021-06-18 | 2021-10-01 | 浙江氢谷智能装备科技有限公司 | Fuel cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050158599A1 (en) * | 2003-12-25 | 2005-07-21 | Honda Motor Co., Ltd. | Fuel cell |
| US20050255364A1 (en) * | 2003-12-12 | 2005-11-17 | Cho Tae-Hee | Bipolar plate of fuel cell |
| CN1933222A (en) * | 2006-09-28 | 2007-03-21 | 武汉理工大学 | Neutral network fractal runner double-pole plate for proton exchange film fuel cell |
| FR2918798A1 (en) * | 2007-07-10 | 2009-01-16 | Air Liquide | Proton exchange membrane fuel cell plate, has wings forming ribs on outside of plate, and extending on part of plate between inlet side and outlet side, where wings present notches that create turbulence during flow of coolant |
| JP2013131355A (en) * | 2011-12-21 | 2013-07-04 | Honda Motor Co Ltd | Fuel cell |
| US20170117559A1 (en) * | 2015-10-22 | 2017-04-27 | Honda Motor Co., Ltd. | Fuel cell |
| CN208173712U (en) * | 2017-12-29 | 2018-11-30 | 上海神力科技有限公司 | A kind of fuel battery double plates coolant flow field structure |
-
2017
- 2017-12-29 CN CN201711477448.2A patent/CN108155400B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050255364A1 (en) * | 2003-12-12 | 2005-11-17 | Cho Tae-Hee | Bipolar plate of fuel cell |
| US20050158599A1 (en) * | 2003-12-25 | 2005-07-21 | Honda Motor Co., Ltd. | Fuel cell |
| CN1933222A (en) * | 2006-09-28 | 2007-03-21 | 武汉理工大学 | Neutral network fractal runner double-pole plate for proton exchange film fuel cell |
| FR2918798A1 (en) * | 2007-07-10 | 2009-01-16 | Air Liquide | Proton exchange membrane fuel cell plate, has wings forming ribs on outside of plate, and extending on part of plate between inlet side and outlet side, where wings present notches that create turbulence during flow of coolant |
| JP2013131355A (en) * | 2011-12-21 | 2013-07-04 | Honda Motor Co Ltd | Fuel cell |
| US20170117559A1 (en) * | 2015-10-22 | 2017-04-27 | Honda Motor Co., Ltd. | Fuel cell |
| CN208173712U (en) * | 2017-12-29 | 2018-11-30 | 上海神力科技有限公司 | A kind of fuel battery double plates coolant flow field structure |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110247076A (en) * | 2019-05-25 | 2019-09-17 | 天津大学 | A kind of fuel cell coolant flow field plate |
| CN110424024A (en) * | 2019-08-02 | 2019-11-08 | 华南理工大学 | It is a kind of to have both water supply and cooling difunctional pole plate and flow field for pure water SPE water electrolyzer |
| CN111313054A (en) * | 2020-04-15 | 2020-06-19 | 浙江锋源氢能科技有限公司 | Fuel cell cooling assembly and fuel cell |
| CN111916797A (en) * | 2020-08-04 | 2020-11-10 | 上海捷氢科技有限公司 | Water separator and fuel cell system |
| CN111916797B (en) * | 2020-08-04 | 2021-05-14 | 上海捷氢科技有限公司 | Water separator and fuel cell system |
| CN113471466A (en) * | 2021-06-18 | 2021-10-01 | 浙江氢谷智能装备科技有限公司 | Fuel cell |
| CN113471466B (en) * | 2021-06-18 | 2024-04-12 | 浙江氢谷智能装备科技有限公司 | Fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108155400B (en) | 2023-12-05 |
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