CN103985886B - The pile of a kind of fuel cell mesh-supported bipolar plates and composition thereof - Google Patents
The pile of a kind of fuel cell mesh-supported bipolar plates and composition thereof Download PDFInfo
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- CN103985886B CN103985886B CN201310048205.2A CN201310048205A CN103985886B CN 103985886 B CN103985886 B CN 103985886B CN 201310048205 A CN201310048205 A CN 201310048205A CN 103985886 B CN103985886 B CN 103985886B
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- Prior art keywords
- bipolar plates
- fuel cell
- runner
- manhole appendix
- supported
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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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
- H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
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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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- 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 invention belongs to fuel cell technology field, specifically the pile of a kind of fuel cell mesh-supported bipolar plates and composition thereof; Described bipolar plates comprises minus plate (1) and positive plate (2), bipolar plates is divided into conversion zone (4) and territory, non-reaction zone (3), territory, non-reaction zone is provided with three of up/down perforation and enters three and portal, conversion zone (4) in bipolar plates is provided with gas flow, fuel manhole appendix (the oxidant manhole appendix on minus plate) on positive plate passes through runner (8) coupled reaction region and is communicated with gas flow, is provided with filling block (9) in runner; The invention has the advantages that, adopt porous air pervious material as filling block, turnover flow channel region between gas inlet and outlet and reaction zone provides intensity support to MEA housing, make MEA housing two sides stress equalization, can not occur because MEA housing subsides, inlet, outlet place runner to be stopped up, finally likely cause MEA to damage.
Description
Technical field
The invention belongs to fuel cell technology field, specifically a kind of fuel cell mesh-supported is twoThe pile of pole plate and composition thereof.
Background technology
Fuel cell is a kind of dress that the chemical energy of hydrogen and oxygen is directly changed into electric energy by electrode reactionPut. Fuel cell is made up of multiple battery units conventionally, and each battery unit comprises two electrodes (anode and negative electrode),These two electrodes are separated by electrolyte element, and are one another in series and assemble, and form fuel cell pack. Every by givingIndividual electrode is supplied with suitable reactant, gives an electrode feed fuels and another supply oxidant, realization electrificationLearn reaction, thereby between electrode, form potential difference, and therefore produce electric energy.
Be commonly referred to " bipolar plates " and be arranged on every in order to give each electrode supply response thing, to useThe specific interface element of the both sides of individual single battery. The normally contiguous male or female supporter of these bipolar plates is placedThe form of discrete component. Bipolar plates is the critical elements of fuel cell unit. Fuel cell piles up in running,Bipolar plates is carried out following function to maintain optimum Working and the service life of fuel cell pack: (1) batteryElectric conductor, pole plate both sides form respectively negative electrode anode, and battery unit connects to form fuel cell pack one by one;(2) provide reaction gas (mass transfer) by runner to electrode; (3) coordinate water and hot management, prevent cooling JieMatter and reacting gas leak outside; (4) provide structural strength support to membrane electrode assembly (MEA).
In bipolar plates, be generally provided with three and enter three and portal, six Kong Jun are by into and out of fluid course and bipolarThe gas flow in plate intermediate reaction region is communicated with, and gas enters after pile by entering fluid into and out of fluid course guidingReact on MEA surface. MEA be by electrode hot pressing on PEM, catalyst is embedded in themBetween composition, the thickness of film is less than 0.1mm, conventional way is adding in two about side bonds 0.1mm of filmStrong material. Fluid inlet and outlet width of flow path on general polar board surface is wider, and therefore film is being imported and exported runner place without propping upSupport, is subject to the screen resilience effect of sealing gasket on pole plate, and the film of runner import and export easily produces and subsides,, cause turnoverFlow channel stops up, and increases pressure drop, and throughput is inadequate etc., brings disaster to MEA and pile, causes pile and produces fault.
Summary of the invention
In order to address the above problem, the present invention designs a kind of MEA housing surface and can not subside and runnerImport and export nonclogging fuel cell and support bipolar plates.
A kind of fuel cell mesh-supported bipolar plates, described bipolar plates comprises minus plate (1) and positive plate(2), it is characterized in that, described bipolar plates is divided into conversion zone (4) and territory, non-reaction zone (3), described twoTerritory, non-reaction zone on pole plate is provided with fuel manhole appendix, oxidant manhole appendix and the cooling agent manhole appendix of up/down perforation,Conversion zone (4) in described bipolar plates is provided with gas flow, and the fuel manhole appendix on described positive plate is by streamCoupled reaction region, road (8) is also communicated with gas flow, and the oxidant manhole appendix on described minus plate passes through runnerCoupled reaction region is also communicated with gas flow, is provided with filling block (9), described filling block and stream in described runnerRoad is wide isometric, and described filling block height is not less than flow channel depth.
Described width of flow path is less than described fuel manhole appendix or oxidant manhole appendix diameter, is greater than described anti-Answer region gas flow way wide.
Described flow channel depth is not less than the described conversion zone gas flow degree of depth.
Described filling block (9) adopts porous material, includes but not limited to nickel foam, foamed aluminium or bubbleFoam plastics.
Described filling block is pasted or is inlayed with described runner and is connected.
Described minus plate and positive plate are the integrated design or separately after design, are bonded together.
A pile for fuel cell mesh-supported bipolar plates composition, is characterized in that, two described twoBetween pole plate, be provided with one group of cell of fuel cell of a layer MEA module composition, between described MEA and bipolar plates, press from both sidesIf one deck GDL, multiple described cell of fuel cell form a fuel cell pile.
The invention has the advantages that, adopt porous air pervious material as filling block, enter not affecting gasWhen the flow of runner reaction and flow velocity, the turnover flow channel region between gas inlet and outlet and reaction zone is givenMEA housing provides intensity support, makes MEA housing two sides stress equalization, and housing can not occur because of MEASubside inlet, outlet place runner is stopped up, affect gas flow and pressure drop, cause output voltage to decline, finally having canCan cause MEA to damage.
Brief description of the drawings
Fig. 1 is pole plate schematic diagram of the present invention;
Fig. 2 is pole plate floor map of the present invention;
Fig. 3 is the A-A cutaway view in Fig. 2;
Fig. 4 is fuel cell unit structure figure of the present invention;
In figure, mark is as follows, and 1 is minus plate, and 2 is positive plate, and 3 is territory, non-reaction zone, and 4 is conversion zone,5-1 is fuel inlet hole, and 5-2 is that fuel portals, and 6-1 is oxidant inlet hole, and 6-2 is that oxidant portals, and 7-1 isCooling agent inlet hole, 7-2 is that cooling agent portals, and 8 is runner, and 9 is filling block, and 10 is MEA, 11 is GDL.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described.
Referring to Fig. 1, Fig. 2 and Fig. 3, bipolar plates of the present invention comprises minus plate 1 and positive plate 2, twoPole plate is divided into conversion zone 4 and territory, non-reaction zone 3. Wherein, be provided with up and down in the territory, non-reaction zone 3 of bipolar platesFuel inlet hole 5-1, the fuel 5-2 that portals connecting, portal 6-2 and cooling agent of oxidant inlet hole 6-1, oxidant entersHole 7-1, the cooling agent 7-2 that portals can design many gas flows, on positive plate 2 in bipolar plates conversion zone 4Fuel manhole appendix 5-1 and 5-2 by runner 8 coupled reaction regions being communicated with gas flow. Minus plate 1On oxidant manhole appendix 6-1 and 6-2 by runner 8 coupled reaction regions be communicated with runner with gas flowWidth is less than fuel manhole appendix or oxidant manhole appendix diameter, is greater than described conversion zone gas flow width, at streamIn road 8, be provided with and the isopyknic porous material filling piece 9 of runner.
Because porous material filling piece and the wide isometric and degree of depth of runner are not less than described conversion zone gasFlow channel depth, therefore embeds porous material filling piece after runner porous material filling piece end face and whole pole plate tableFace maintains an equal level or exceeds slightly, and filling block can be fixed in runner as inlayed by bonding or alternate manner.
As the A-A of Fig. 3 cuts open as shown in figure, runner 8 degree of depth are not less than the gas flow in conversion zoneThe degree of depth.
As shown in Figure 4, positive plate 2, GDL11, MEA10, GDL, minus plate 1 superpose successivelyForm a cell of fuel cell; Several battery units superpose up and down, form a fuel cell pile. Each utmost pointThe fuel manhole appendix, oxidant manhole appendix and six gas pipelines of cooling agent manhole appendix composition that on plate, connect. Fuel electricityIn the real reaction process of pond, fuel and oxidant flow into pile from fuel inlet hole and oxidant inlet hole respectively, by streamRoad enters in conversion zone runner, after reaction finishes by runner 8 outflow that enters that fuel portals and oxidant portalsPile. Because the filling block that embeds runner is porous material, as nickel foam, foamed aluminium or foamed plastics, thereforeGas flow air-flow in the time of runner is even, and pressure drop is little.
In addition, the difference of based on fuel and oxidant needs and pile real reaction demand, can selectThe porous material of different void levels, reaches the fine setting effect to turnover air-flow.
Wherein, the minus plate of two adjacent groups stacks of cells and positive plate can integrated design at oneIn bipolar plates, also can be bonded together.
Referring to Fig. 4, MEA assembly covers conversion zone and the territory, non-reaction zone of bipolar plates simultaneously, due toIn the runner 8 in fuel manhole appendix or oxidant manhole appendix coupled reaction region, be provided with filling block 9, filling block end face withWhole polar board surface maintains an equal level or exceeds slightly that (after the stack of multiple cell of fuel cell, the raised area can be pressed slightlyFlat or ignore), thus stressed even everywhere in territory, non-reaction zone between MEA and minus plate, positive plate,Therefore MEA housing, at air inlet/outlet place, can not subside.
Claims (7)
1. a fuel cell mesh-supported bipolar plates, described bipolar plates comprises minus plate (1) and positive plate (2),It is characterized in that, described bipolar plates is divided into conversion zone (4) and territory, non-reaction zone (3), in described bipolar platesTerritory, non-reaction zone (3) is provided with fuel manhole appendix, oxidant manhole appendix and the cooling agent manhole appendix of up/down perforation, instituteThe conversion zone (4) of stating in bipolar plates is provided with gas flow, and the fuel manhole appendix on described positive plate (2) passes throughRunner (8) coupled reaction region (4) is also communicated with gas flow, and the oxidant on described minus plate (1) entersPortal by runner coupled reaction region (4) and be communicated with gas flow, in described runner, being provided with filling block (9),Described filling block (9) is wide isometric with runner, and described filling block (9) is highly not less than flow channel depth.
2. a kind of fuel cell mesh-supported bipolar plates as claimed in claim 1, is characterized in that described streamRoad width is less than described fuel manhole appendix or oxidant manhole appendix diameter, is greater than described conversion zone gas flow wayWide.
3. a kind of fuel cell mesh-supported bipolar plates as claimed in claim 1, is characterized in that described streamThe road degree of depth is not less than described conversion zone (4) the gas flow degree of depth.
4. a kind of fuel cell mesh-supported bipolar plates as claimed in claim 1, is characterized in that, described in fill outFill piece (9) and adopt foamed plastics.
5. a kind of fuel cell mesh-supported bipolar plates as claimed in claim 1, is characterized in that, described in fill outFill piece (9) with described runner stickup or inlay and be connected.
6. a kind of fuel cell mesh-supported bipolar plates as claimed in claim 1, is characterized in that described the moonPole plate (1) and positive plate (2) are the integrated design or separately after design, are bonded together.
7. a fuel cell pack, comprises fuel cell mesh-supported bipolar plates as claimed in claim 1, itsBe characterised in that, between two described bipolar plates, be provided with skim electrode assemblie and form one group of cell of fuel cell, described inSandwiched one deck gas diffusion layers between membrane electrode assembly and bipolar plates, multiple described cell of fuel cell form a combustionMaterial battery pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048205.2A CN103985886B (en) | 2013-02-07 | 2013-02-07 | The pile of a kind of fuel cell mesh-supported bipolar plates and composition thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310048205.2A CN103985886B (en) | 2013-02-07 | 2013-02-07 | The pile of a kind of fuel cell mesh-supported bipolar plates and composition thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103985886A CN103985886A (en) | 2014-08-13 |
| CN103985886B true CN103985886B (en) | 2016-05-11 |
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| CN201310048205.2A Active CN103985886B (en) | 2013-02-07 | 2013-02-07 | The pile of a kind of fuel cell mesh-supported bipolar plates and composition thereof |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105529478B (en) * | 2014-09-29 | 2018-07-06 | 上海恒劲动力科技有限公司 | A kind of pile of fuel battery double plates and its composition |
| CN105914385B (en) * | 2016-06-28 | 2018-12-11 | 北京氢璞创能科技有限公司 | High-power water-cooling electric pile structure |
| CN106935885B (en) * | 2017-03-10 | 2020-04-07 | 中国科学院青岛生物能源与过程研究所 | High-porosity porous carbon filled fuel cell flow field structure and preparation method thereof |
| 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 |
| CN108134109B (en) * | 2017-12-29 | 2023-11-07 | 上海神力科技有限公司 | Bipolar plate structure of fuel cell |
| DE102018216099A1 (en) * | 2018-09-21 | 2020-03-26 | Robert Bosch Gmbh | Electrode support device for a fuel cell and / or electrolyzer unit |
| CN109585875B (en) * | 2018-12-05 | 2024-05-07 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator, unit fuel cell, and fuel cell stack |
| CN109524686B (en) * | 2018-12-05 | 2024-03-12 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator, unit fuel cell, fuel cell stack, and electrode plate |
| CN109509892B (en) * | 2018-12-05 | 2024-02-23 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator, unit fuel cell, and fuel cell stack |
| CN109509893B (en) * | 2018-12-05 | 2024-03-12 | 国家电投集团氢能科技发展有限公司 | Fuel cell separator, unit fuel cell, and fuel cell stack |
| CN110444785A (en) * | 2019-08-30 | 2019-11-12 | 湖南理工燃料电池有限公司 | Dual polar plates of proton exchange membrane fuel cell, battery and battery pile |
| CN112436161A (en) * | 2020-11-23 | 2021-03-02 | 一汽解放汽车有限公司 | Bipolar plate, manufacturing method thereof and fuel cell |
| US11784325B2 (en) | 2021-09-30 | 2023-10-10 | Nissan North America, Inc. | Frameless fuel cell stack having hollow fasteners |
| CN117558958B (en) * | 2024-01-11 | 2024-03-12 | 港华能源创科(深圳)有限公司 | Battery stack structure |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4031952B2 (en) * | 2002-05-21 | 2008-01-09 | 本田技研工業株式会社 | Fuel cell |
| EP1704613A1 (en) * | 2003-12-12 | 2006-09-27 | Lg Electronics Inc. | Bipolar plate of fuel cell |
| US8124292B2 (en) * | 2007-06-28 | 2012-02-28 | Protonex Technology Corporation | Fuel cell stacks and methods |
| CN101340001B (en) * | 2007-07-02 | 2011-04-13 | 扬光绿能股份有限公司 | Runner plate |
| CN100466351C (en) * | 2007-08-02 | 2009-03-04 | 上海交通大学 | Proton exchange film fuel battery dual-pole board based on thin plate punching |
| CN102142566A (en) * | 2010-01-28 | 2011-08-03 | 财团法人工业技术研究院 | Flow field plate for fuel cells |
| CN101826621A (en) * | 2010-03-30 | 2010-09-08 | 上海恒劲动力科技有限公司 | Bipolar plate for fuel cells |
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2013
- 2013-02-07 CN CN201310048205.2A patent/CN103985886B/en active Active
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| CN103985886A (en) | 2014-08-13 |
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Effective date of registration: 20201201 Address after: Room 103, no.1331 zhuanxing East Road, Minhang District, Shanghai, 201108 Patentee after: Shunfeng Hengjin hydrogen energy development (Shanghai) Co., Ltd Address before: 201203, building 1, building 1388, Zhang Dong Road, Zhangjiang hi tech park, Shanghai, Pudong New Area Patentee before: Shanghai Everpower Technologies Ltd. |
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