CN103746129A - Proton membrane fuel cell flow channels with optimized fuel cell drainage performance - Google Patents
Proton membrane fuel cell flow channels with optimized fuel cell drainage performance Download PDFInfo
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- CN103746129A CN103746129A CN201410012652.7A CN201410012652A CN103746129A CN 103746129 A CN103746129 A CN 103746129A CN 201410012652 A CN201410012652 A CN 201410012652A CN 103746129 A CN103746129 A CN 103746129A
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- runner
- fuel cell
- flow channels
- drainage performance
- proton membrane
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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
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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
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
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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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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses proton membrane fuel cell flow channels with optimized fuel cell drainage performance. The flow channels are generally in serpentine arrangement; nine parallel flow channels are arranged at a gas inlet; every three flow channels are combined into one flow channel at the first flow channel bending; the three parallel flow channels formed after combination guide gas to an outlet. According to the proton membrane fuel cell flow channels with the optimized fuel cell drainage performance, serpentine flow channel design which is applied widely is adopted, so that a current, namely the gas, can be uniformly distributed in a flow field; meanwhile, the reduction of the number of the flow channels relieves the pressure change caused by gas consumption, the speed of the gas at the outlet is improved, the drainage effect of a cathode is improved effectively, and meanwhile, the oxygen transmission passing through the surface of a diffusion layer within unit time is also improved.
Description
Technical field
The present invention relates to a kind of flow passage structure for Proton Exchange Membrane Fuel Cells, be specifically related to a kind of proton membrane fuel battery runner of optimizing fuel cell drainage performance.
Background technology
The runner of fuel cell is one of critical piece of fuel cell, and effect is to realize the transmission of the aqueous vapor of inside battery.Reasonably runner design can be realized the uniformity that aqueous vapor distributes, and improves battery performance.Due to the generation of the gas consumption in cell reaction and water, conventional traditional serpentine flow path (Fig. 1) exists distribution of gas uneven, produces the problems such as ponding, has affected greatly the lifting of battery performance.
Summary of the invention
The object of the invention is to overcome the deficiency that traditional serpentine flow path exists, a kind of proton membrane fuel battery runner of optimizing fuel cell drainage performance is provided; It not only has desirable drainage, and guarantees the oxygen supply amount of runner rear end, makes CURRENT DISTRIBUTION more even.
The object of the invention is to be achieved through the following technical solutions:
First aspect, the present invention relates to a kind of proton membrane fuel battery runner of optimizing fuel cell drainage performance, snakelike the arranging of the overall one-tenth of described runner, and in gas access, place is nine parallel fluid channels, to runner turning, every three runners are merged into one; Three parallel fluid channels that form after merging guide to exit by gas.
Preferably, the cross section of described runner is the square of length of side 1mm, and ridge is wide is 0.885mm.
Preferably, every runner that described merging forms afterwards with merge before the cross-sectional area of every runner equate.
Preferably, at first runner turning, every three parallel fluid channels are merged into one.That is: from nine parallel fluid channels, become three.
Preferably, described runner has the turning of six places.
Preferably, the square that the layout of described runner in proton membrane fuel battery flow-field plate is 5cm*5cm.
Compared with prior art, the present invention has following beneficial effect:
The present invention is based on traditional serpentine flow path, simple in structure being easy to processed; By reducing the design of runner quantity, reduce total cross section of runner, gas flow velocity in the process by runner is increased, improve the speed of oxygen supply of flow field end, alleviate to a certain extent the caused concentration polarization of oxygen expenditure; In addition, the enhancing of gas flow rate the drainage effect of runner, also improved the transmission of gas at runner diffuse underneath layer, effectively prevented water logging phenomenon.In a word, the present invention improves efficiency of oxygen supply and the drain function of runner by merging the mode of runner, thereby improves the uniformity of CURRENT DISTRIBUTION and gas transport, and cell integrated level is improved.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is traditional serpentine flow path schematic diagram;
Fig. 2 is flow passage structure schematic diagram of the present invention;
Fig. 3 is the performance comparison diagram of three kinds of runners of embodiment 1 and comparative example 1,2;
Fig. 4 is the alternating-current resistance comparison diagram of three kinds of runners of embodiment 1 and comparative example 1,2.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
embodiment 1
The present embodiment is for the feature of traditional used in proton exchange membrane fuel cell serpentine flow path, total arrangement to runner, quantity and arrangement mode improve, thereby improve the efficiency of transmission of gas, improve the ability of forced drainage, to realizing uniformity and the stability of battery performance.
The proton membrane fuel battery flow passage structure of the optimization fuel cell drainage performance of the present embodiment as shown in Figure 2, porch is nine parallel fluid channels, to runner turning, every three runners are merged into one (every flow channel cross-section is long-pending constant), by three runners, gas are guided to exit.The stoichiometry of air of take equals 2 as example, and exit has reduced by 10% compared with the tolerance of porch, and the design makes total cross section of runner reduce 1/3, and flow velocity increases to 2.7 times.The raising of air velocity can effectively discharge in runner and ridge under the ponding of diffusion layer, also improved the feed speed of oxygen on diffusion layer surface.Therefore, the present invention can improve the uniformity of CURRENT DISTRIBUTION and gas transport, thereby realizes the optimization of battery performance.
The runner parameter that the runner of the present embodiment relates to is as shown in table 1.
comparative example 1,2
Comparative example 1 and 2 adopts same runner design, i.e. traditional serpentine flow path, and its corresponding runner parameter is as shown in table 1; Wherein, the width of flow path of comparative example 2 increases, and ridge width reduces, and strengthens gas and spreads under ridge, to compare the drainage performance of runner.
Table 1
| ? | Runner number | Width of flow path | Ridge width |
| Comparative example 1 | 9 | 1 | 0.885 |
| Comparative example 2 | 9 | 1.4 | 0.485 |
| Embodiment 1 | 9 turn 3 | 1 | 0.885 |
Embodiment 1 has been carried out to Performance Ratio with traditional serpentine flow path of comparative example 1,2 under same operation condition, and experiment condition is: humidity RH=100%, stoichiometric proportion H
2: Air=1.5: 2, operating pressure 1.5bar, 80 ℃ of operating temperatures.Performance comparison result as shown in Figure 3,4.
The Performance Ratio that Fig. 3 has provided three kinds of runners.By comparative example 1 and 2, comparative example 2 at the electric current of high Current Zone far away higher than comparative example 1.The narrow ridge design of comparative example 2 can effectively be strengthened gas and spread and dewater under ridge, and hence one can see that, and in high galvanic areas, under ridge, the ponding of diffusion layer is the principal element of restriction battery performance lifting.The electric current of embodiment 1 in high Current Zone is better than comparative example 2, and the drainage performance of visible embodiment 1 runner is more excellent.With regard to embodiment 1, total cross section of runner has reduced 2/3rds, makes flow velocity obtain the lifting of nearly three times.Higher flow velocity has impelled the drainage effect of gas.From the power of battery, the maximum power of embodiment 1 reaches 650mW, than comparative example 2, has promoted nearly 100mW.
Fig. 4 has provided the alternating-current resistance of three kinds of runners and the relation of current density.For effectively removing the ponding under ridge, comparative example 2 has reduced the width of ridge, is convenient to the diffusion of gas diffusion layer under ridge.Although this design has effectively improved battery performance, reduced the contact-making surface of collector plate and diffusion layer, improved resistance, make battery efficiency loss.Embodiment 1 strengthens diffusion effect by improving gas flow rate, when improving the drainage performance of battery, has guaranteed the contact area of collector plate and diffusion layer, makes alternating-current resistance reduce approximately 20% left and right than comparative example 2.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (6)
1. a proton membrane fuel battery runner of optimizing fuel cell drainage performance, is characterized in that, snakelike the arranging of the overall one-tenth of described runner, and in gas access, place is nine parallel fluid channels, to runner turning, every three runners are merged into one; Three parallel fluid channels that form after merging guide to exit by gas.
2. the proton membrane fuel battery runner of optimization fuel cell drainage performance as claimed in claim 1, is characterized in that, the cross section of described runner is the square of length of side 1mm, and ridge is wide is 0.885mm.
3. the proton membrane fuel battery runner of optimization fuel cell drainage performance as claimed in claim 1, is characterized in that, every runner that described merging forms afterwards with merge before the cross-sectional area of every runner equate.
4. the proton membrane fuel battery runner of the optimization fuel cell drainage performance as described in any one in claim 1～3, is characterized in that, at first runner turning, every three parallel fluid channels are merged into one.
5. the proton membrane fuel battery runner of optimization fuel cell drainage performance as claimed in claim 4, is characterized in that, described runner has six places and turns.
6. the proton membrane fuel battery runner of optimization fuel cell drainage performance as claimed in claim 4, is characterized in that, the square that the layout of described runner in proton membrane fuel battery flow-field plate is 5cm*5cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410012652.7A CN103746129B (en) | 2014-01-10 | 2014-01-10 | Optimize the proton membrane fuel battery runner of fuel cell drainage performance |
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| CN201410012652.7A CN103746129B (en) | 2014-01-10 | 2014-01-10 | Optimize the proton membrane fuel battery runner of fuel cell drainage performance |
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| CN103746129A true CN103746129A (en) | 2014-04-23 |
| CN103746129B CN103746129B (en) | 2016-05-04 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602100A (en) * | 2017-01-04 | 2017-04-26 | 沈阳建筑大学 | Novel fuel cell flow field plate |
| CN108963297A (en) * | 2018-06-29 | 2018-12-07 | 上海交通大学 | The waveform flow channels for proton exchange membrane fuel cells of convection current under a kind of reinforcing ridge |
| CN109428090A (en) * | 2017-09-01 | 2019-03-05 | 上海铭寰新能源科技有限公司 | A kind of fuel cell with merging runner |
| CN113013437A (en) * | 2019-12-20 | 2021-06-22 | 广西大学 | Fuel cell cathode flow channel with gradually-reduced slope surface structure |
| CN114204066A (en) * | 2021-11-16 | 2022-03-18 | 江苏大学 | Tapered parallel snakelike runner structure and proton exchange membrane fuel cell |
| CN114709440A (en) * | 2022-05-31 | 2022-07-05 | 武汉氢能与燃料电池产业技术研究院有限公司 | Proton exchange membrane fuel cell flow field plate |
| CN115000455A (en) * | 2022-06-06 | 2022-09-02 | 浙江氢邦科技有限公司 | Solid oxide fuel cell connector |
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| CN1851965A (en) * | 2005-04-22 | 2006-10-25 | 比亚迪股份有限公司 | Flow-field board of fuel cell |
| CN101071876A (en) * | 2007-05-23 | 2007-11-14 | 天津大学 | Fuel cell graphitc composite flow field plate and its manufacturing method |
| CN101847732A (en) * | 2010-05-28 | 2010-09-29 | 北京科技大学 | Flow field plate of fuel cell and water electrolysis cell with main channel and auxiliary channel |
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2014
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| US20040202911A1 (en) * | 1999-10-19 | 2004-10-14 | Honda Giken Kogyo Kabushiki Kaisha | Full cell stack |
| CN1851965A (en) * | 2005-04-22 | 2006-10-25 | 比亚迪股份有限公司 | Flow-field board of fuel cell |
| CN101071876A (en) * | 2007-05-23 | 2007-11-14 | 天津大学 | Fuel cell graphitc composite flow field plate and its manufacturing method |
| CN101847732A (en) * | 2010-05-28 | 2010-09-29 | 北京科技大学 | Flow field plate of fuel cell and water electrolysis cell with main channel and auxiliary channel |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602100A (en) * | 2017-01-04 | 2017-04-26 | 沈阳建筑大学 | Novel fuel cell flow field plate |
| CN106602100B (en) * | 2017-01-04 | 2023-05-12 | 沈阳建筑大学 | Novel fuel cell flow field plate |
| CN109428090A (en) * | 2017-09-01 | 2019-03-05 | 上海铭寰新能源科技有限公司 | A kind of fuel cell with merging runner |
| CN108963297A (en) * | 2018-06-29 | 2018-12-07 | 上海交通大学 | The waveform flow channels for proton exchange membrane fuel cells of convection current under a kind of reinforcing ridge |
| CN108963297B (en) * | 2018-06-29 | 2020-07-14 | 上海交通大学 | Wave-shaped proton exchange membrane fuel cell flow channel for strengthening under-ridge convection |
| CN113013437A (en) * | 2019-12-20 | 2021-06-22 | 广西大学 | Fuel cell cathode flow channel with gradually-reduced slope surface structure |
| CN113013437B (en) * | 2019-12-20 | 2023-08-01 | 广西大学 | Fuel cell cathode runner with gradually-reduced slope structure |
| CN114204066A (en) * | 2021-11-16 | 2022-03-18 | 江苏大学 | Tapered parallel snakelike runner structure and proton exchange membrane fuel cell |
| CN114709440A (en) * | 2022-05-31 | 2022-07-05 | 武汉氢能与燃料电池产业技术研究院有限公司 | Proton exchange membrane fuel cell flow field plate |
| CN115000455A (en) * | 2022-06-06 | 2022-09-02 | 浙江氢邦科技有限公司 | Solid oxide fuel cell connector |
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| CN103746129B (en) | 2016-05-04 |
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