CN102110838B - Proton exchange membrane fuel cell stack - Google Patents
Proton exchange membrane fuel cell stack Download PDFInfo
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- CN102110838B CN102110838B CN200910259732.1A CN200910259732A CN102110838B CN 102110838 B CN102110838 B CN 102110838B CN 200910259732 A CN200910259732 A CN 200910259732A CN 102110838 B CN102110838 B CN 102110838B
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- fuel cell
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- proton exchange
- collector plate
- rebound
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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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Abstract
本发明公开了一种质子交换膜燃料电池电堆，包括由多个单电池串联叠加而成的电池组、在所述电池组两端依次设置的集流板、绝缘板及端板，所述电堆中还设置有气体通道，所述集流板与气体通道之间设置有隔层；所述隔层为绝缘板的凸出结构层；所述电池组与两个集流板之间均设置有导电性的过渡板，且所述过渡板中间开有反应气通道，该反应气通道与所述气体通道相连通。本发明通过隔层和过渡板的设置，不仅避免了集流板的化学腐蚀，还能保证燃料电池电流的有效收集，从而降低燃料电池成本，延长燃料电池使用寿命。
The invention discloses a proton exchange membrane fuel cell stack, which comprises a battery pack formed by stacking a plurality of single cells in series, current collecting plates, insulating plates and end plates arranged sequentially at both ends of the battery pack. A gas channel is also provided in the electric stack, and an interlayer is arranged between the current collector plate and the gas channel; the interlayer is a protruding structural layer of the insulating plate; A conductive transition plate is provided, and a reaction gas channel is opened in the middle of the transition plate, and the reaction gas channel communicates with the gas channel. The present invention not only avoids the chemical corrosion of the collector plate through the arrangement of the interlayer and the transition plate, but also ensures the effective collection of the fuel cell current, thereby reducing the cost of the fuel cell and prolonging the service life of the fuel cell.
Description
Technical field
The present invention relates to fuel cell technology field, particularly, relate to a kind of proton exchange film fuel cell electric piling.
Background technology
Fuel cell technology is a kind of clean, the reproducible energy conversion technology that electric energy, heat energy and water that hydrogen and oxygen are produced in the time there is electrochemical reaction are utilized.Fuel cell, according to electrolyte difference, can be divided into alkaline fuel cell, phosphoric acid fuel cell, molten carbonate fuel cell, Solid Oxide Fuel Cell, Proton Exchange Membrane Fuel Cells etc.And Proton Exchange Membrane Fuel Cells is because its power density is large, working temperature is low, battery structure is simple, pressure is changed to the features such as insensitive, obtain in the world general concern, its product also progresses into market.
The electrolyte of Proton Exchange Membrane Fuel Cells is proton exchange membrane, and now widely used is the Nafion series perfluoro sulfonic acid membrane that E.I.Du Pont Company produces.The effect of film is dual, provides hydrogen ion passage as electrolyte, as barrier film isolation polarization response gas.Optimizing ion and water transmission performance and the suitable water management of film, is the key that ensures battery performance.In the both sides of barrier film, respectively there is one deck catalyst layer.Catalyst is mainly made up of Pt/C, adds Nafion solution in Catalytic Layer again, to increase proton conduction property and Catalytic Layer and electrolytical contact performance.Catalytic Layer is fuel cell gas conversion zone.In the both sides of Catalytic Layer, respectively there is one deck gas diffusion layers, Main Function is distribution, the discharge of product etc. at electrode surface as the conduction of the supporter of Catalytic Layer, inside battery, gas.At present, the material of diffusion layer is mainly carbon paper, carbon cloth or wire netting.The common component film electrode of dielectric film, Catalytic Layer and gas diffusion layers (MEA).Monocell is made up of membrane electrode and the flow-field plate that is arranged on its both sides, and wherein the conventional graphite cake material of flow-field plate is made, and is processed into the effigurate water conservancy diversion fluid slot of tool and fluid passage through milling machine.
Fuel cell pile is by the multi-disc monocell battery pack being cascaded that superposes.When assembling pile, for the power delivery that fuel cell chemical reaction is produced arrives load, respectively need to there is a slice collector plate for collecting the electric current of pile at the two ends of pile (both positive and negative polarity).For monocell is forced together closely, need to there be the end plate of some strength at the two ends of pile as support; Between end plate and collector plate, need to be equipped with insulation board, to avoid electric current and leak outside, cause battery short circuit.The reaction gas of fuel cell enters fuel cell membrane electrode from pile outside via end plate, insulation board, collector plate by gas passage.In the time having the reacting gas process collector plate of certain humidity and temperature, under the operational environment of fuel cell, easily cause the corrosion of collector plate.Therefore, the material of collector plate is selected to be restricted, it must be material corrosion-resistant, high conductivity, such as copper, silver, gold or be coated with the stainless steel of copper, silver, gold, even so, can not prevent the corrosion of collector plate completely, after fuel cell operation a period of time, the resistance of collector plate still can increase to some extent.So not only increase the cost of fuel cell pile, and reduced the life-span of fuel cell.
Summary of the invention
The object of the invention is, for above-mentioned defect of the prior art, to propose a kind of proton exchange film fuel cell electric piling.
The technical scheme that realizes above-mentioned purpose is as follows:
A kind of proton exchange film fuel cell electric piling, comprise the battery pack being formed by multiple monocell overlapped in series, the collector plate, insulation board and the end plate that set gradually at described battery pack two ends, in described pile, be also provided with gas passage, between described collector plate and gas passage, be provided with interlayer.
Further, the projective structure layer that described interlayer is insulation board.
Further, be provided with the rebound of conductivity between described battery pack and two collector plate, and have reactant gas passage in the middle of described rebound, this reactant gas passage is connected with described gas passage.
Further, between described rebound and battery pack, adopt the form sealing of sealing ring or fluid sealant; Between described rebound and gas passage, adopt the form sealing of sealing ring or fluid sealant.
Further, described collector plate can be the metallic plates such as aluminium sheet, corrosion resistant plate, copper coin or is coated with the metallic plates such as the aluminium sheet, corrosion resistant plate, copper coin of corrosion-inhibiting coating.
Further, described rebound can or be coated with the metallic plate such as copper coin, corrosion resistant plate, aluminium sheet of corrosion-inhibiting coating for metallic plates such as copper coins, corrosion resistant plate, aluminium sheet.
Compared with prior art, the present invention has following beneficial effect:
1, between collector plate and gas passage, be provided with dividing plate (can be the projective structure layer of insulation board), collector plate can be included in to inner side, directly do not contact with the reacting gas with certain humidity, collector plate also can not be corroded under fuel cell operation environment, therefore collector plate can be used the high conductivity material cheaply such as copper coin, corrosion resistant plate, aluminium sheet, can reduce the cost of fuel cell pile, extend the useful life of fuel cell.
2, between the battery pack of pile and collector plate, increase one deck rebound, because rebound has certain conductivity, can not affect the power taking of collector plate, rebound is also resistant material simultaneously, but its corrosion-resistant degree is less demanding, so rebound can use copper coin, corrosion resistant plate, aluminium sheet cheaply or be coated with the metallic plates such as the copper coin, corrosion resistant plate, aluminium sheet of corrosion-inhibiting coating.
3,, in order to prevent that reacting gas is to pile external leakage, can also between rebound and battery pack, rebound and gas passage, adopt the form sealing of sealing ring or fluid sealant.
A kind of proton exchange film fuel cell electric piling of the present invention, not only can avoid the chemical corrosion of collector plate, can also ensure effective collection of fuel cell current, thereby reduces fuel cell cost.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Brief description of the drawings
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of common proton exchange film fuel cell electric piling;
Fig. 2 is the cross-sectional view at enter/gas outlet of traditional proton exchange film fuel cell electric piling place;
Fig. 3 is the cross-sectional view at enter/gas outlet of proton exchange film fuel cell electric piling of the present invention place.
By reference to the accompanying drawings, in the embodiment of the present invention, Reference numeral is as follows:
1-monocell; 2-membrane electrode; 3-hydrogen stream field plate; 4-air stream field plate; 5-collector plate; 6-insulation board; 7-end plate; 8a-hydrogen input channel; 8b-hydrogen output channel; 9a-air output channel; 9b-air input passage; 10-gas I/O channel connector; 11-gas I/O passage; 12-end plate; 13-insulation board; 14-collector plate; 15-monocell flow-field plate; 16-seal; 17-gas I/O channel connector; 18-gas I/O passage; 19-end plate; 20-insulation board; 21-interlayer; 22-collector plate; 23-rebound; 24-monocell flow-field plate; 25-seal.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Fig. 1 is the structural representation of common proton membrane fuel battery pile, pile forms battery pack by monocell 1 (3) overlapped in series, monocell 1 is made up of membrane electrode 2 and the hydrogen stream field plate 3, the air stream field plate 4 that are arranged on its both sides, be disposed with respectively collector plate 5, insulation board 6 and end plate 7 at battery pack two ends, in described pile, be also provided with gas passage (8a-hydrogen input channel; 8b-hydrogen output channel; 9a-air output channel; 9b-air input passage).Wherein flow-field plate (hydrogen stream field plate 3, air stream field plate 4), is mainly sintering graphite plate or die-pressed graphite plate, and a side of flow-field plate is gas flow, and opposite side is heat eliminating medium runner; The collector plate 5 adjacent with the flow-field plate of battery pack must be material corrosion-resistant, high conductivity, and such as copper, silver, gold or be coated with the stainless steel of copper, silver, gold, the delivery of electrical energy mainly electrochemical reaction being generated is to load; Insulation board 6 main materials are resin, nylon or plastics etc., prevent that the electric energy that fuel cell produces from leaking or battery short circuit; End plate 7 materials are corrosion resistant plate or the aluminium sheets that have certain degree of hardness, are mainly in order to ensure that fuel cell pile has certain pressure.
Fig. 2 is the cross-sectional view at enter/gas outlet of traditional proton exchange film fuel cell electric piling place.Wherein 10 is gas I/O channel connector, 11 is gas I/O passage, reaction hydrogen or air enter into monocell flow-field plate 15 via gas I/O passage 11 or flow out through monocell flow-field plate 15, and carry out electrochemical reaction at inside battery; End plate 12 is for the air pressure of balance fuel inside battery and the contact resistance of reduction fuel cell; Thereby insulation board 13 prevents fuel cell and externally leaks electricity and cause electric energy loss, is common plate body; The electric energy that collector plate 14 produces for collecting fuel cell, it directly contacts with gas I/O passage 11.In order to prevent that gas, to pile external leakage, is provided with seal 16 in collector plate 14, can be sealing ring, fluid sealant etc.In operation of fuel cells environment, the humidity of gas is 50% left and right, voltage is 0.5V to tens volt, easily cause the corrosion of collector plate 14 at seal 16 places, and progressively expand the whole plane of collector plate 16 to, further increase the resistance of collector plate 16, thereby affect the delivery efficiency of fuel cell.Therefore collector plate 16 must be good, the corrosion resistant metal of conductivity, such as copper, silver, gold or be coated with the stainless steel of copper, silver, gold, even so, can not prevent the corrosion of collector plate 16 completely, after fuel cell operation a period of time, the resistance of collector plate 16 still can increase to some extent.So not only increase the cost of fuel cell pile, and reduced the life-span of fuel cell.
Fig. 3 is the cross-sectional view at enter/gas outlet of proton exchange film fuel cell electric piling of the present invention place, wherein 17 is gas I/O channel connectors, the 18th, gas I/O passage, reaction hydrogen or air enter into monocell flow-field plate 24 via gas I/O passage 18 or flow out through monocell flow-field plate 24, and carry out electrochemical reaction at inside battery.End plate 19 is for the air pressure of balance fuel inside battery and the contact resistance of reduction fuel cell.Thereby insulation board 20 prevents fuel cell and externally leaks electricity and cause electric energy loss.Interlayer 21 is between collector plate 22 and gas I/O passage 18, this interlayer 21 is the projective structure layer of insulation board 20, be that insulation board 20 is T fonts, interlayer 21 can be opened collector plate 22 with gas I/O passage 18 is isolated, collector plate 22 is not directly contacted with the reacting gas with certain humidity, collector plate 22 can not be corroded under fuel cell operation environment, therefore collector plate 22 does not need corrosion resistant material, can be the low high conductivity material of cost such as copper coin, corrosion resistant plate, aluminium sheet or the copper coin that scribbles corrosion-inhibiting coating, corrosion resistant plate, aluminium sheet.Between collector plate 22 and monocell flow-field plate 24, have a conductivity rebound 23, rebound 23 to collector plate 22, and then is transferred to load by collector plate 22 by the current delivery of fuel cell, in the middle of rebound 23, have reactant gas passage, flow into/flow out pile for reaction gas.In order to prevent that reacting gas is to pile external leakage, between rebound 23 and monocell flow-field plate 24, rebound 23 and gas I/O passage 18, adopt seal 25, can be sealing ring or fluid sealant.Reacting gas directly contacts with rebound 23, so rebound 23 is also resistant material, but corrosion-resistant degree is less demanding, so rebound 23 can be the metal materials such as copper coin, corrosion resistant plate, aluminium sheet or the copper coin that is coated with corrosion-inhibiting coating, corrosion resistant plate, aluminium sheet.
In sum, a kind of proton exchange film fuel cell electric piling of the present invention, improvement with respect to prior art is mainly: for fear of the corrosion of collector plate, between collector plate and gas passage, adopt the setting of interlayer (as the projective structure layer of insulation board), therefore collector plate can adopt high-conductivity material cheaply.In order to ensure effective collection of fuel cell current, in air stream field plate one side of pile positive pole, conduction, corrosion-resistant rebound are housed, the material of rebound can be metal or conducting polymer composite.In the middle of rebound, have reactant gas passage, flow into/flow out pile for reaction gas; Between rebound and air stream field plate, adopt the form sealing of sealing ring or fluid sealant; Between rebound and gas passage, adopt the form sealing of sealing ring or fluid sealant; In hydrogen stream field plate one side of pile negative pole, conduction, corrosion-resistant rebound are housed equally, the material of rebound can be metal or conducting polymer composite.In the middle of rebound, have reactant gas passage, flow into/flow out pile for reaction gas.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a proton exchange film fuel cell electric piling, comprise the battery pack being formed by multiple monocell overlapped in series, the collector plate, insulation board and the end plate that set gradually at described battery pack two ends, in described pile, be also provided with gas passage, it is characterized in that, between described collector plate and gas passage, be provided with interlayer;
Described interlayer is the projective structure layer of insulation board.
2. a kind of proton exchange film fuel cell electric piling according to claim 1, it is characterized in that, between described battery pack and two collector plate, be provided with the rebound of conductivity, and have reactant gas passage in the middle of described rebound, this reactant gas passage is connected with described gas passage.
3. a kind of proton exchange film fuel cell electric piling according to claim 2, is characterized in that, adopts the form sealing of sealing ring or fluid sealant between described rebound and battery pack; Between described rebound and gas passage, adopt the form sealing of sealing ring or fluid sealant.
4. a kind of proton exchange film fuel cell electric piling according to claim 2, is characterized in that, described collector plate can be aluminium sheet, corrosion resistant plate, copper coin or is coated with aluminium sheet, corrosion resistant plate, the copper coin of corrosion-inhibiting coating.
5. a kind of proton exchange film fuel cell electric piling according to claim 2, is characterized in that, described rebound can be copper coin, corrosion resistant plate, aluminium sheet or copper coin, corrosion resistant plate, the aluminium sheet that is coated with corrosion-inhibiting coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259732.1A CN102110838B (en) | 2009-12-24 | 2009-12-24 | Proton exchange membrane fuel cell stack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259732.1A CN102110838B (en) | 2009-12-24 | 2009-12-24 | Proton exchange membrane fuel cell stack |
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| CN102110838A CN102110838A (en) | 2011-06-29 |
| CN102110838B true CN102110838B (en) | 2014-07-16 |
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| CN200910259732.1A Expired - Fee Related CN102110838B (en) | 2009-12-24 | 2009-12-24 | Proton exchange membrane fuel cell stack |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6176536B2 (en) * | 2014-11-10 | 2017-08-09 | トヨタ自動車株式会社 | Fuel cell |
| JP6160982B2 (en) * | 2014-11-10 | 2017-07-12 | トヨタ自動車株式会社 | Manufacturing method of fuel cell stack |
| CN111952620A (en) * | 2019-05-14 | 2020-11-17 | 北京中氢绿能科技有限公司 | Metal polar plate air cooling fuel cell pile |
| CN111769300B (en) * | 2020-02-28 | 2023-06-30 | 上海市机电设计研究院有限公司 | Preparation method of aluminum-based copper-plated current collector for all-vanadium redox flow battery |
| CN111668524A (en) * | 2020-06-23 | 2020-09-15 | 北京成功领行汽车技术有限责任公司 | A fuel cell and its control system and control method |
| CN114765265A (en) * | 2021-01-13 | 2022-07-19 | 上海神力科技有限公司 | Fuel cell and vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098015A (en) * | 2006-06-27 | 2008-01-02 | 中国电子科技集团公司第十八研究所 | Fuel cell stack inlet and outlet device |
| CN201142335Y (en) * | 2007-11-27 | 2008-10-29 | 汉能科技有限公司 | Anti-corrosion structure for fuel cell |
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2009
- 2009-12-24 CN CN200910259732.1A patent/CN102110838B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098015A (en) * | 2006-06-27 | 2008-01-02 | 中国电子科技集团公司第十八研究所 | Fuel cell stack inlet and outlet device |
| CN201142335Y (en) * | 2007-11-27 | 2008-10-29 | 汉能科技有限公司 | Anti-corrosion structure for fuel cell |
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| CN102110838A (en) | 2011-06-29 |
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Granted publication date: 20140716 Termination date: 20201224 |