CN105428678A - Seal connecting piece for high-power-density PEMFC (proton exchange membrane fuel cell) pile - Google Patents
Seal connecting piece for high-power-density PEMFC (proton exchange membrane fuel cell) pile Download PDFInfo
- Publication number
- CN105428678A CN105428678A CN201510940054.0A CN201510940054A CN105428678A CN 105428678 A CN105428678 A CN 105428678A CN 201510940054 A CN201510940054 A CN 201510940054A CN 105428678 A CN105428678 A CN 105428678A
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- CN
- China
- Prior art keywords
- connecting plate
- pile
- elastic sealing
- plate
- high power
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- 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.)
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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
- H01M8/10—Fuel cells with solid electrolytes
-
- 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
-
- 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
-
- 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
- H01M8/0276—Sealing means characterised by their 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
-
- 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
Abstract
The invention discloses a seal connecting piece for a high-power-density PEMFC (proton exchange membrane fuel cell) pile. The seal connecting piece comprises a connecting plate, wherein elastic sealing structures are arranged around the connecting plate and attached to peripheries of an air inlet and a liquid inlet of a three-in-one membrane electrode, a special polar plate is press-attached in a central area, defined by the elastic sealing structures, of the connecting plate, each elastic sealing structure is thicker than the special polar plate, the surface of the connecting piece is plated with a conductive plating to facilitate charge transfer, and a coolant flow field is arranged inside to facilitate pile cooling and temperature control. The elastic sealing structures are arranged around the connecting piece to seal the special polar plate attached to the central area of the plate, the problem that the high-power-density PEMFC pile design cannot be sealed with traditional sealing methods is solved, the weight and size of the pile are reduced, and the power density of the pile is increased.
Description
Technical field
The invention belongs to fuel cell field, specifically a kind of high power-density proton (PEMFC) pile seal connector.
Background technology
Proton Exchange Membrane Fuel Cells (protonexchangemembranefuelcell) is a kind of fuel cell, and principle is equivalent to " inverse " device of water electrolysis.Its monocell is made up of anode, negative electrode and proton exchange membrane, and anode is the place that oxidation occurs hydrogen fuel, and negative electrode is the place of oxidant reduction, and the catalyst of accelerating electrode electrochemical reaction is all contained at the two poles of the earth, and proton exchange membrane is as transmission H
+medium, only allow H
+pass through.A DC power supply is equivalent to, anode and power cathode, negative electrode and positive source during work.
The pile of Proton Exchange Membrane Fuel Cells by multiple cell in a series arrangement stacked combination form.Bipolar plates and three-in-one membrane electrode assembly (MEA) are superimposed, embedding sealing part between each monomer, premenstrual, end plate compresses that rear screw rod is fastening to be toggled, and namely forms proton exchange film fuel cell electric piling.
This shows, traditional fuel cell is made up of membrane electrode, bipolar plates, collector plate, end plate and securing member.Because polymer-membrane fuel battery monolithic voltage is low, in actual applications, be superimposed by multiple battery unit to be together in series, form pile.Bipolar plates is component the heaviest in fuel cell component, traditional bipolar plates is graphite bi-polar plate or metal double polar plates substantially, it is over half that weight accounts for pile weight, make fuel cell weight and volume bigger than normal, fuel cell range of application and field, require, close under overcritical condition, more and more to keep the commercialization step of fuel cell in check in the current bulk density to fuel cell and weight density.
The main member of novel high power-density proton pile is that end plate, collector plate, pole plate and three-in-one MEA form.Utilize the novel pole plate that there is homogenous disperse gas and there is gas flowfield, replace traditional bipolar plates and carbon paper.Due to integrally-built change, novel fuel cell pile relates to again the problem of sealing, sealing is a vital problem for Proton Exchange Membrane Fuel Cells, traditional pile sealing means is placed in bipolar plates or between bipolar plates and sealing ring by sealing ring to apply fluid sealant, make sealing ring Light deformation under a certain pressure, thus reach sealing effectiveness.And novel high power-density proton, due to the loose porous character of pole plate, so the pole plate at negative and positive the two poles of the earth all will seal, prevent leaking outside of pile, cause the hydraulic performance decline of pile and potential safety hazard sealing means can not adopt traditional pile sealing means, need to be further improved the demand that could meet new proton exchange film fuel battery to hermetically-sealed construction.
Summary of the invention
Goal of the invention: the object of the invention is for the deficiencies in the prior art, provides a kind of sealing property remarkable, is applicable to the seal connector of high power-density proton pile.
Technical scheme: high power density pemfc stack seal connector of the present invention, it is characterized in that, comprise connecting plate, the surrounding of described connecting plate is provided with elastic sealing structure, described elastic sealing structure is fitted in the air admission hole of three in one membreane electrode, the surrounding of inlet opening, overlay special pole plate in the central area that described connecting plate is surrounded by described elastic sealing structure, and the thickness of described elastic sealing structure is greater than the thickness of described special pole plate;
Described connecting plate surface is coated with conductive coating, is convenient to transferring charge, and inside is provided with cooling fluid flow field, and cooling and the temperature of being convenient to pile control, and connecting plate surface is provided with gas flowfield with described special pole plate contact site; The two ends of described connecting plate are respectively arranged with air admission hole, inlet opening and venthole, fluid hole, and described inlet opening and fluid hole are interconnected by described cooling fluid flow field, and described air admission hole and venthole are interconnected by described gas flowfield.
The present invention's technical scheme is further preferably, the thickness of described conductive coating is 10nm ~ 100nm.
Preferably, two surperficial surroundings of described connecting plate are provided with elastic sealing structure, the special pole plate of anode of fitting respectively in the central area on two surfaces and the special pole plate of negative electrode.
Preferably, air admission hole and the venthole at described connecting plate two ends are two, be respectively oxidizing gas import, fuel gas inlets and oxidizing gas outlet, fuel gas outlet, the outlet of described oxidizing gas import and oxidizing gas and fuel gas inlets and fuel gas outlet are communicated with separately respectively by the gas flowfield of a connecting plate wherein side surface.
Preferably, described connecting plate is the plate body be made up of metal material, nonmetallic materials or composite material, the thermal conductivity coefficient>=15/ [w. (mk) of plate body
-1].
Preferably, described elastic sealing structure is the sealing ring processed by elastomeric material.
Preferably, the surface one side of described special pole plate is platen surface, and another side is suppressed with gas flowfield according to the flow field of design, wherein, be fitted on described three in one membreane electrode after planar surface coated with conductive resilient coating, flow field face fits tightly on described connecting plate.
Beneficial effect: the present invention is provided with elastic sealing structure in the surrounding of connecting plate, be fitted in the air admission hole of three in one membreane electrode, the surrounding of inlet opening, the special pole plate of connector central area is combined in for sealing paste, guarantee that pile is overall without the need to arranging bipolar plates, the sealing of pile can be completed, solve the problem that the design of high power density pemfc stack adopts conventional seals mode to seal, reduce the cost of pile, reduce the weight and volume of pile, improve specific volume density and the weight/power ratio density of pile; Simultaneously the present invention arranges flow channel for liquids in connecting plate inside, is convenient to cooling fluid and is uniformly distributed and is conducive to pile cooling and temperature control; Gas flowfield is set on connecting plate surface, special pole plate can be coordinated, complete gas uniform distribution, replace the gas uniform distributed function of conventional bipolar plate, decrease pile number of fitting parts, improve the packaging efficiency of pile, accelerate the step of fuel cell industrialization;
In addition, the present invention is also provided with one deck conductive coating on the surface of connecting plate surface and elastic sealing structure, is convenient to collected current, reduces pile internal resistance, improve the performance of pile.
Accompanying drawing explanation
Fig. 1 is the structural representation of high power density pemfc stack seal connector of the present invention;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the installation diagram of high power density pemfc stack of the present invention.
Embodiment
Below by accompanying drawing, technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
embodiment 1:a kind of high power density pemfc stack seal connector, comprise connecting plate 1, the size of connecting plate 1 is determined according to the size of pile, and connecting plate is the plate body be made up of metal material, nonmetallic materials or composite material, the thermal conductivity coefficient>=15/ [w. (mk) of plate body
-1];
As shown in Figure 1: the surperficial surrounding of connecting plate 1 two is provided with elastic sealing structure 11, such as sealing ring, the surperficial elastic sealing structure 11 of connecting plate 1 two is fitted in the air admission hole of the three in one membreane electrode 2 of both sides respectively, the surrounding of inlet opening, the special pole plate of anode 3 and the special pole plate 4 of negative electrode is overlayed respectively in the central area that connecting plate 1 two sides is surrounded by elastic sealing structure 11, and the thickness of elastic sealing structure 11 is greater than special pole plate 3, the thickness of 4, the surface of connecting plate 1 surface and elastic sealing structure 11 is also provided with the thick conductive coating of one deck 10nm ~ 100nm 12,
The two ends of connecting plate 1 are respectively arranged with oxidant gas import 13, fuel gas inlets 14, inlet opening 15 and oxidant gas outlet 16, fuel gas outlet 17, fluid hole 18, connecting plate 1 inside arranges liquid flow field 19, and inlet opening 15 and fluid hole 18 are interconnected by liquid flow field 19; Connecting plate 1 surface is provided with gas flowfield with special pole plate 3,4 contact site, and oxidant gas import 13 and oxidant gas outlet 17 and fuel gas inlets 14 and fuel gas outlet 17 are communicated with separately respectively by the gas flowfield of a connecting plate 2 wherein side surface.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite not departing from claims definition, various change can be made in the form and details to it.
Claims (7)
1. a high power density pemfc stack seal connector, it is characterized in that, comprise connecting plate, the surrounding of described connecting plate is provided with elastic sealing structure, described elastic sealing structure is fitted in the air admission hole of three in one membreane electrode, the surrounding of inlet opening, overlay special pole plate in the central area that described connecting plate is surrounded by described elastic sealing structure, and the thickness of described elastic sealing structure is greater than the thickness of described special pole plate;
Described connecting plate surface is coated with conductive coating, is convenient to transferring charge, and inside is provided with cooling fluid flow field, and cooling and the temperature of being convenient to pile control, and connecting plate surface is provided with gas flowfield with described special pole plate contact site; The two ends of described connecting plate are respectively arranged with air admission hole, inlet opening and venthole, fluid hole, and described inlet opening and fluid hole are interconnected by described cooling fluid flow field, and described air admission hole and venthole are interconnected by described gas flowfield.
2. high power density pemfc stack seal connector according to claim 1, it is characterized in that, the thickness of described conductive coating is 10nm ~ 100nm.
3. high power density pemfc stack seal connector according to claim 1, it is characterized in that, two surperficial surroundings of described connecting plate are provided with elastic sealing structure, the special pole plate of anode of fitting respectively in the central area on two surfaces and the special pole plate of negative electrode.
4. high power density pemfc stack seal connector according to claim 3, it is characterized in that, air admission hole and the venthole at described connecting plate two ends are two, be respectively oxidizing gas import, fuel gas inlets and oxidizing gas outlet, fuel gas outlet, the outlet of described oxidizing gas import and oxidizing gas and fuel gas inlets and fuel gas outlet are communicated with separately respectively by the gas flowfield of a connecting plate wherein side surface.
5. high power density pemfc stack seal connector according to claim 1, it is characterized in that, described connecting plate is the plate body be made up of metal material, nonmetallic materials or composite material, the thermal conductivity coefficient>=15/ [w. (mk) of plate body
-1].
6. high power density pemfc stack seal connector according to claim 1, it is characterized in that, described elastic sealing structure is the sealing ring processed by elastomeric material.
7. high power density pemfc stack seal connector according to claim 1, it is characterized in that, the surface one side of described special pole plate is platen surface, another side is suppressed with gas flowfield according to the flow field of design, wherein, be fitted on described three in one membreane electrode after planar surface coated with conductive resilient coating, flow field face fits tightly on described connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510940054.0A CN105428678A (en) | 2015-12-15 | 2015-12-15 | Seal connecting piece for high-power-density PEMFC (proton exchange membrane fuel cell) pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510940054.0A CN105428678A (en) | 2015-12-15 | 2015-12-15 | Seal connecting piece for high-power-density PEMFC (proton exchange membrane fuel cell) pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105428678A true CN105428678A (en) | 2016-03-23 |
Family
ID=55506720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510940054.0A Pending CN105428678A (en) | 2015-12-15 | 2015-12-15 | Seal connecting piece for high-power-density PEMFC (proton exchange membrane fuel cell) pile |
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|---|---|
| CN (1) | CN105428678A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108470930A (en) * | 2018-03-15 | 2018-08-31 | 杜克兰 | A kind of iron-chromium liquid stream battery stack |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694502Y (en) * | 2004-05-21 | 2005-04-20 | 天津大学 | Double plates for combined type proton exchange film battery |
| CN1996647A (en) * | 2007-01-05 | 2007-07-11 | 天津大学 | Thin metal dual-pole board of proton exchange film fuel battery |
| CN102306813A (en) * | 2011-08-12 | 2012-01-04 | 上海交通大学 | Fuel cell bipolar plate prepared through metal sheet stamping and forming, and application thereof |
| CN104253277A (en) * | 2013-06-26 | 2014-12-31 | 武汉众宇动力系统科技有限公司 | PEM (Proton Exchange Membrane) fuel cell stack |
| CN205355158U (en) * | 2015-12-15 | 2016-06-29 | 江苏绿遥燃料电池系统制造有限公司 | High power density PEMFC sealing connection spare for pile |
-
2015
- 2015-12-15 CN CN201510940054.0A patent/CN105428678A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2694502Y (en) * | 2004-05-21 | 2005-04-20 | 天津大学 | Double plates for combined type proton exchange film battery |
| CN1996647A (en) * | 2007-01-05 | 2007-07-11 | 天津大学 | Thin metal dual-pole board of proton exchange film fuel battery |
| CN102306813A (en) * | 2011-08-12 | 2012-01-04 | 上海交通大学 | Fuel cell bipolar plate prepared through metal sheet stamping and forming, and application thereof |
| CN104253277A (en) * | 2013-06-26 | 2014-12-31 | 武汉众宇动力系统科技有限公司 | PEM (Proton Exchange Membrane) fuel cell stack |
| CN205355158U (en) * | 2015-12-15 | 2016-06-29 | 江苏绿遥燃料电池系统制造有限公司 | High power density PEMFC sealing connection spare for pile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108470930A (en) * | 2018-03-15 | 2018-08-31 | 杜克兰 | A kind of iron-chromium liquid stream battery stack |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Suzhou City, Jiangsu Province, Yushan Town, Kunshan City, 215313 Yu Yang Road No. 299, room 3 Applicant after: Jiangsu hydrogen power new energy Co., Ltd. Address before: 215313, Jiangsu, Kunshan City, Yushan Town, Yu Yang Road, No. 299, Ping An International Industrial Park A building, Applicant before: Jiangsu Lv Yao fuel cell system Manufacturing Co., Ltd |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |
|
| RJ01 | Rejection of invention patent application after publication |