CN107742735A - Sealing structure encapsulated a kind of MEA and its manufacture method and application method - Google Patents
Sealing structure encapsulated a kind of MEA and its manufacture method and application method Download PDFInfo
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- CN107742735A CN107742735A CN201710791654.4A CN201710791654A CN107742735A CN 107742735 A CN107742735 A CN 107742735A CN 201710791654 A CN201710791654 A CN 201710791654A CN 107742735 A CN107742735 A CN 107742735A
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- Prior art keywords
- diffusion layer
- pem
- side diffusion
- sealing structure
- sealing
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Classifications
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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
- H01M8/0276—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
- H01M8/2404—Processes or apparatus for grouping 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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 discloses sealing structure encapsulated a kind of MEA, manufacture the method for the sealing structure and the method using the sealing structure.The sealing structure includes fuel cell and sealing joint strip, wherein, fuel cell includes graphite cake, side diffusion layer, PEM, catalyst layer and opposite side diffusion layer；Sealing joint strip is coated on side diffusion layer, PEM, the outside for telling catalyst layer and opposite side diffusion layer；The area of side diffusion layer is less than the area of PEM and opposite side diffusion layer；Side diffusion layer is oxygen diffusion layer, and opposite side diffusion layer is hydrogen diffusion layer；The area of PEM and opposite side diffusion layer is less than the area of graphite cake；It is the step coordinated with side diffusion layer, PEM, catalyst layer and opposite side diffusion layer phase on the inside of sealed colloid.The sealing structure effect of the present invention is molded well soon.
Description
Technical field
The present invention relates to field of fuel cell technology, relates more specifically to a kind of encapsulated sealing structures of MEA and manufactures this
The method and the method using this sealing structure of kind sealing structure.
Background technology
Fuel cell, hydrogen and oxygen (being typically the oxygen in air) can be converted into by electricity with higher efficiency
Can, reaction by-product is pure water.Therefore there are energy-saving and environmental protection.
Traditional fuel cell pack seals each material by mode for dispensing glue, and gluing process is using semi-artificial half machinery
Formula, and the time was fully cured more than 24 hours in colloid, the shortcomings that time-consuming, uniformity is poor, efficiency is low be present.This shortcoming also restricts
The mass production of fuel cell.
Therefore, the sealing structure of new good sealing effect efficiency high is badly in need of developing in this area.
The content of the invention
Fast sealing structure is molded it is an object of the invention to provide a kind of good sealing effect.
In the first aspect of the present invention, the invention provides a kind of encapsulated sealing structures of MEA.The sealing structure includes
Fuel cell and sealing joint strip, wherein, the fuel cell include graphite cake, side diffusion layer, PEM,
Catalyst layer and opposite side diffusion layer；
The sealing joint strip is coated on the side diffusion layer, the PEM, tells catalyst layer and described
The outside of opposite side diffusion layer；
The area of the side diffusion layer is less than the area of the PEM and the opposite side diffusion layer；
The side diffusion layer is oxygen diffusion layer, and the opposite side diffusion layer is hydrogen diffusion layer；Or
The side diffusion layer is hydrogen diffusion layer, and the opposite side diffusion layer is oxygen diffusion layer；
The side diffusion layer expose with the edge of the PEM together with it is continuous, closing, not another
The proton exchange diaphragm area of side diffusion layer covering；
The area of the PEM and the opposite side diffusion layer is less than the area of the graphite cake；
On the inside of the sealed colloid for the side diffusion layer, the PEM, the catalyst layer and institute
State the step of opposite side diffusion layer phase cooperation.
Preferably, the PEM both sides are equipped with catalyst layer.
Preferably, the sealing joint strip edge is provided with multiple raised sealed muscles.
Preferably, the side diffusion layer, the PEM, the catalyst layer and the opposite side diffusion layer
Be surrounded by groove, for the sealing joint strip colloid circulate passage.
Preferably, the sealing joint strip is made up of compressible material.
The thickness of the sealing joint strip is h, and h meets：1.5mm≤h≤4mm.
The lateral length that the hydrogen diffusion layer is wrapped by the sealing joint strip is L1, and L1 meets：2mm≤L1≤
10mm。
The lateral length that the PEM is wrapped by the sealing joint strip is L2, and L2 meets：2mm≤L2≤
10mm。
The lateral length that the oxygen diffusion layer is wrapped by the sealing joint strip is L3, and L3 meets：2mm≤L3≤
10mm。
In the second aspect of the present invention, the invention provides a kind of side for the sealing structure for manufacturing first aspect present invention
Method.It the described method comprises the following steps：
(a) hydrogen diffusion layer, PEM and oxygen diffusion layer are provided, and are stacked together；Wherein, the matter
Proton exchange is clipped among the hydrogen diffusion layer and the oxygen diffusion layer；And the hydrogen diffusion layer, the proton are handed over
It is step to change film and the oxygen diffusion layer；
(b) hydrogen diffusion layer, PEM and the oxygen diffusion layer that stack are put into mould, by mould
Lower closing lid and fixation；
(c) sealed colloid is injected to the mould, by the four of the hydrogen diffusion layer, PEM and oxygen diffusion layer
Week, cladding was got up, and the sealed colloid is solidified into one and sealing joint strip is integrally formed.
Preferably, it is additionally provided with catalyst layer between the hydrogen diffusion layer and the PEM.
Preferably, it is additionally provided with catalyst layer between the oxygen diffusion layer and the PEM.
Preferably, the mould is provided with glue-feeder, for injecting sealed colloid to the mould.
Preferably, the sealed colloid is injected to the mould with high pressure.
Preferably, the groove for forming sealed muscle is provided with the mould.
Preferably, at four angles when stacking the hydrogen diffusion layer, the PEM and the oxygen diffusion layer
Fixed with silica gel.
Preferably, it is additionally provided with gum outlet on the mould.
In the third aspect of the present invention, the invention provides a kind of side of the sealing structure using first aspect present invention
Method.Methods described is that multiple sealing structures as described in the first aspect of the invention are stacked into assembling, realizes the sealing of fuel cell.
It should be understood that within the scope of the present invention, above-mentioned each technical characteristic of the invention and have in below (eg embodiment)
It can be combined with each other between each technical characteristic of body description, so as to form new or preferable technical scheme.As space is limited, exist
This no longer tires out one by one states.
Brief description of the drawings
Fig. 1 is a kind of front view of typical sealing structure of the present invention；
Fig. 2 is the top view of the sealing structure shown in Fig. 1.
Marked in each accompanying drawing as follows：2- sheet metals；3- graphite cakes；4- oxygen diffusion layers；5- PEMs；6- hydrogen expands
Dissipate layer；10- sealing joint strips；11- sealed muscles.
Embodiment
The present inventor by extensively and in-depth study, develop first a kind of encapsulated sealing structure of PEM and
Use the method for this sealing structure.The present inventor creates a kind of mould, first by PEM and hydrogen gas side diffusion layer
It is stacked together with oxygen side diffusion layer, four angles can be dubbed with fixation with silica gel, be then placed in mould, above and below mould
Closing lid and fixation, mould have a glue-feeder and gum outlet, in mould, are spread in PEM and hydrogen gas side diffusion layer and oxygen side
The surrounding of layer material, there is a circle groove, be the passage of colloid circulation.Then colloid is injected into glue-feeder with high pressure, by casting glue
Mode, PEM and the surrounding of hydrogen gas side diffusion layer and oxygen side diffusion layer cladding are got up, it is i.e. straight after colloid solidification
Connect bonding and form an entirety.Then the other materials with fuel cell pack stacks, and is realized by compression seal adhesive tape region
Sealing.
The present invention is completed on this basis.
The sealing area shape that traditional dispensing mode is formed is unrestricted, and mobility is strong, and labor intensive is also needed to after solidification
Unnecessary colloid is cut off, repairs outward appearance.The casting glue mode of innovation is by PEM and hydrogen gas side diffusion layer and oxygen side diffusion layer
Suppressed by mould, limit colloid flow range, be disposal molding, this sealing means, which realize, exempts to cut, and is excused from a college course whole
Purpose, uniformity is high, can be assembled PEM as an entirety with bilateral diffusion layer after shaping.Together
When, suppressed by mould, sealed muscle can be increased in the sealing area of shaping, improve sealing property.
The hardening time of traditional dispensing mode, its glue curing had certain humidity requirement more than 24 hours, and climate influences,
Hardening time can be caused to extend in the case of dry weather, uncontrollable factor be present.The casting gluing method of innovation uses mould pressure
The mode of system, colloid is molded at once when reaching requirement temperature, almost without hardening time.It is time-consuming to substantially reduce solidification, more
It is adapted to mass production.
Traditional dispensing mode be required for expending after with colloid solidifying during the dispensing necessarily manually complete finishing and
The work of monitoring.The casting glue mode of innovation can be realized Fully-mechanized, greatly reduce cost of labor, improve production efficiency.
The sealing structure of the present invention solves the limitation of conventional fuel cell sealing technology, greatly increases production effect
Rate, the target of mass production can be achieved.The sealing structure good sealing effect of the present invention, shaping are fast.
Term
As used herein, term " MEA " refers to membrane electrode assembly (Membrane Electrode Assemblies), is combustion
Expect the combination of the PEM of battery, catalyst and electrode.Herein, catalyst is catalyst layer, and electrode is respectively hydrogen
Gas diffusion layer and oxygen diffusion layer.
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.
It should be noted that in the claim and specification of this patent, such as first and second or the like relation
Term is used merely to make a distinction an entity or operation with another entity or operation, and not necessarily requires or imply
Any this actual relation or order be present between these entities or operation.Moreover, term " comprising ", "comprising" or its
Any other variant is intended to including for nonexcludability so that process, method, article including a series of elements or
Equipment not only includes those key elements, but also the other element including being not expressly set out, or also include for this process,
Method, article or the intrinsic key element of equipment.In the absence of more restrictions, wanted by what sentence " including one " limited
Element, it is not excluded that other identical element in the process including the key element, method, article or equipment also be present.
Embodiment 1
As depicted in figs. 1 and 2, the encapsulated sealing structure of a kind of typical PEM of the invention.The structure includes
Fuel cell and sealing joint strip 10, wherein, fuel cell includes graphite cake 3, oxygen diffusion layer 4, PEM 5
With hydrogen diffusion layer 6；Sealing joint strip 10 is coated on the outside of oxygen diffusion layer 4, PEM 5 and hydrogen diffusion layer 6；Hydrogen
The sectional area of gas diffusion layer 6 is less than the sectional area of PEM 5 and oxygen diffusion layer 4；PEM 5 and oxygen diffusion layer
4 sectional area is less than the sectional area of graphite cake 3；The inner side of sealed colloid 10 is and oxygen diffusion layer 4, PEM 5 and hydrogen
The step that gas diffusion layer 6 matches.Sealing joint strip edge is provided with multiple raised sealed muscles 11.Oxygen diffusion layer 4, proton are handed over
That changes film 5 and hydrogen diffusion layer 6 is surrounded by groove, the passage that the colloid for sealing joint strip circulates.Sealing joint strip 10 by
Compressible material is made.The thickness of sealing joint strip is that h is 3mm.The lateral length that hydrogen diffusion layer is wrapped by sealing joint strip is
L1 is 5mm.PEM 5 is that L2 is 6mm by the lateral length that sealing joint strip 10 wraps.Oxygen diffusion layer 4 is by fluid sealant
The lateral length that bar 10 wraps is that L3 is 4mm.The battery cell also includes sheet metal 2, raised close in sealing area edge
Envelope muscle 11 is in contact with sheet metal 2, and graphite cake 3 is coated between sealing joint strip 10 and sheet metal 2, so as to realize sealing.
Embodiment 2
A kind of method of manufacture of present invention sealing structure encapsulated MEA, this method comprise the following steps：(a) hydrogen is provided
Diffusion layer, PEM and oxygen diffusion layer, and be stacked together, stack hydrogen diffusion layer, PEM and
Fixed during oxygen diffusion layer at four angles with silica gel；Wherein, PEM is clipped among hydrogen diffusion layer and oxygen diffusion layer；
And hydrogen diffusion layer, PEM and the oxygen diffusion layer are step；Set between hydrogen diffusion layer and PEM
There is catalyst layer, catalyst layer also is provided between oxygen diffusion layer and PEM；(b) by the hydrogen diffusion layer stacked,
PEM and oxygen diffusion layer are put into mould, by closing lid above and below mould and fixation；It is provided with the mould and forms sealed muscle
Groove；(c) sealed colloid is injected from the glue-feeder high pressure of mould to mould, by hydrogen diffusion layer, PEM and oxygen
The surrounding cladding of gas diffusion layer is got up, and sealed colloid is solidified into one and sealing joint strip is integrally formed, that is, forms the sealing of the present invention
Structure.
Embodiment 3
A kind of method of sealing structure encapsulated MEA using the present invention, this method are by multiple sealings of the invention
Structure, which stacks, to be assembled together, and sealing is realized by compression seal adhesive tape region.Multiple fastening structures of assembling, shape will be sealed
Into fuel cell pack.
All it is incorporated as referring in this application in all documents that the present invention refers to, it is independent just as each document
It is incorporated as with reference to such.In addition, it is to be understood that after the above-mentioned instruction content of the present invention has been read, those skilled in the art can
To be made various changes or modifications to the present invention, these equivalent form of values equally fall within the model that the application appended claims are limited
Enclose.
Claims (10)
1. sealing structure encapsulated a kind of MEA, it is characterised in that the sealing structure includes fuel cell and fluid sealant
Bar, wherein, the fuel cell includes graphite cake, side diffusion layer, PEM, catalyst layer and opposite side diffusion
Layer；
The sealing joint strip is coated on the side diffusion layer, the PEM, tells catalyst layer and described another
The outside of side diffusion layer；
The area of the side diffusion layer is less than the area of the PEM and the opposite side diffusion layer；
The side diffusion layer is oxygen diffusion layer, and the opposite side diffusion layer is hydrogen diffusion layer；Or
The side diffusion layer is hydrogen diffusion layer, and the opposite side diffusion layer is oxygen diffusion layer；
The side diffusion layer expose with the edge of the PEM together with it is continuous, closing, do not expanded by opposite side
Dissipate the proton exchange diaphragm area of layer covering；
The area of the PEM and the opposite side diffusion layer is less than the area of the graphite cake；
It is on the inside of the sealed colloid and the side diffusion layer, the PEM, the catalyst layer and described another
The step that side diffusion layer phase coordinates；
Preferably, the PEM both sides are equipped with catalyst layer.
2. sealing structure as claimed in claim 1, it is characterised in that the sealing joint strip edge is provided with multiple raised close
Seal muscle.
3. sealing structure as claimed in claim 1, it is characterised in that the side diffusion layer, the PEM, described
Catalyst layer and the opposite side diffusion layer are surrounded by groove, the passage that the colloid for the sealing joint strip circulates.
4. sealing structure as claimed in claim 1, it is characterised in that the sealing joint strip is made up of compressible material.
5. sealing structure as claimed in claim 1, it is characterised in that the thickness of the sealing joint strip is h, and h meets：1.5mm
≤h≤4mm。
6. sealing structure as claimed in claim 1, it is characterised in that the hydrogen diffusion layer is wrapped by the sealing joint strip
Lateral length be L1, L1 meets：2mm≤L1≤10mm.
7. sealing structure as claimed in claim 1, it is characterised in that the PEM is wrapped by the sealing joint strip
Lateral length be L2, L2 meets：2mm≤L2≤10mm.
8. sealing structure as claimed in claim 1, it is characterised in that the oxygen diffusion layer is wrapped by the sealing joint strip
Lateral length be L3, L3 meets：2mm≤L3≤10mm.
9. the method for a kind of manufacture sealing structure encapsulated MEA, it is characterised in that the described method comprises the following steps：
(a) hydrogen diffusion layer, PEM and oxygen diffusion layer are provided, and are stacked together；Wherein, the proton is handed over
Film is changed to be clipped among the hydrogen diffusion layer and the oxygen diffusion layer；And the hydrogen diffusion layer, the PEM
It is step with the oxygen diffusion layer；
(b) hydrogen diffusion layer, PEM and the oxygen diffusion layer that stack are put into mould, mould is closed up and down
Cover and fix；
(c) sealed colloid is injected to the mould, by the surrounding bag of the hydrogen diffusion layer, PEM and oxygen diffusion layer
Cover, the sealed colloid is solidified into one and sealing joint strip is integrally formed；
Preferably, it is additionally provided with catalyst layer between the hydrogen diffusion layer and the PEM；
Preferably, it is additionally provided with catalyst layer between the oxygen diffusion layer and the PEM；
Preferably, the mould is provided with glue-feeder, for injecting sealed colloid to the mould；
Preferably, the sealed colloid is injected to the mould with high pressure；
Preferably, the groove for forming sealed muscle is provided with the mould；
Preferably, in four angle silicon when stacking the hydrogen diffusion layer, the PEM and the oxygen diffusion layer
Glue is fixed；
Preferably, it is additionally provided with gum outlet on the mould.
A kind of 10. method of the sealing structure encapsulated using MEA, it is characterised in that methods described is such as claim by multiple
Any described sealing structures of 1-8 stack assembling, realize the sealing of fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791654.4A CN107742735B (en) | 2017-09-05 | 2017-09-05 | MEA encapsulated sealing structure and manufacturing method and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710791654.4A CN107742735B (en) | 2017-09-05 | 2017-09-05 | MEA encapsulated sealing structure and manufacturing method and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107742735A true CN107742735A (en) | 2018-02-27 |
| CN107742735B CN107742735B (en) | 2021-08-31 |
Family
ID=61235155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710791654.4A Active CN107742735B (en) | 2017-09-05 | 2017-09-05 | MEA encapsulated sealing structure and manufacturing method and using method thereof |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129539A (en) * | 2019-12-28 | 2020-05-08 | 一汽解放汽车有限公司 | Fuel cell membrane electrode sealing device and preparation method thereof |
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| CN101118972A (en) * | 2006-08-04 | 2008-02-06 | 上海清能燃料电池技术有限公司 | Seal structure and manufacture method of fuel cell |
| US20150372318A1 (en) * | 2013-02-07 | 2015-12-24 | Ngk Spark Plug Co., Ltd. | Fuel cell and method for manufacturing same |
| JP2016018587A (en) * | 2014-07-04 | 2016-02-01 | タイガースポリマー株式会社 | Method of manufacturing separator for solid-state polymer type fuel battery |
| US9972851B2 (en) * | 2013-11-29 | 2018-05-15 | Commissariat à l'énergie atomique et aux énergies alternatives | Method for manufacturing a membrane/electrode assembly comprising reinforcements |
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2017
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|---|---|---|---|---|
| CN1853300A (en) * | 2003-07-14 | 2006-10-25 | 乌米科雷股份两合公司 | Membrane-electrode unit for electrolysis of water |
| CN101118972A (en) * | 2006-08-04 | 2008-02-06 | 上海清能燃料电池技术有限公司 | Seal structure and manufacture method of fuel cell |
| US20150372318A1 (en) * | 2013-02-07 | 2015-12-24 | Ngk Spark Plug Co., Ltd. | Fuel cell and method for manufacturing same |
| US9972851B2 (en) * | 2013-11-29 | 2018-05-15 | Commissariat à l'énergie atomique et aux énergies alternatives | Method for manufacturing a membrane/electrode assembly comprising reinforcements |
| JP2016018587A (en) * | 2014-07-04 | 2016-02-01 | タイガースポリマー株式会社 | Method of manufacturing separator for solid-state polymer type fuel battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129539A (en) * | 2019-12-28 | 2020-05-08 | 一汽解放汽车有限公司 | Fuel cell membrane electrode sealing device and preparation method thereof |
| CN111129539B (en) * | 2019-12-28 | 2021-05-28 | 一汽解放汽车有限公司 | Fuel cell membrane electrode sealing device and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN107742735B (en) | 2021-08-31 |
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