CN110400944A - A kind of encapsulating method and sealing structure of fuel cell membrane electrode and frame - Google Patents
A kind of encapsulating method and sealing structure of fuel cell membrane electrode and frame Download PDFInfo
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- CN110400944A CN110400944A CN201910580149.4A CN201910580149A CN110400944A CN 110400944 A CN110400944 A CN 110400944A CN 201910580149 A CN201910580149 A CN 201910580149A CN 110400944 A CN110400944 A CN 110400944A
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- frame
- membrane electrode
- glue
- proton exchange
- upper side
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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
-
- 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
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/028—Sealing means characterised by their material
- H01M8/0284—Organic resins; Organic polymers
-
- 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
- H01M8/0286—Processes for forming seals
-
- 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
A kind of encapsulating method of fuel cell membrane electrode and frame disclosed by the invention, comprising: step S1: the frame is cut, and the jamb surface is handled, for increasing the surface viscous force of the frame；Step S2: UV glue is coated on the frame；Step S3: the frame is bonded on the glass plate for being placed in one piece of smooth placement with the membrane electrode；Step S4: using UV glue described in ultraviolet light and make the UV adhesive curing.Technical solution provided by the invention the problem of so as to avoid sealant excessive glue causes proton exchange fouling membrane in solidification process, simplifies process flow, reduces manufacturing cost using the membrane electrode and frame of UV glue sealing fuel cell due to not having application pressure.In addition, UV glue is not easy to be influenced by temperature in the use process of fuel cell, solidification effect is stablized, and effectively increases the service life of fuel cell.
Description
Technical field
The present invention relates to a kind of fuel cell, in particular to the encapsulating method of a kind of fuel cell membrane electrode and frame with it is close
Seal structure.
Background technique
Fuel cell has energy density height, starting time short and advantages of environment protection, becomes next-generation power-supply system
Popular selection.Wherein membrane electrode assembly (Membrane electrode assembly, abbreviation MEA) is fuel cell
Critical component, performance quality directly determine the use of fuel cell.Since the reactive material of fuel cell is gas, if
It leaks, it is possible to cause the safety accidents such as burning, to affect the safety and reliability of fuel cell.In order to prevent
Cathode gas and anodic gas are not leaked to outside batteries, also not mutual gas blowby, and the sealing between membrane electrode and frame is especially heavy
It wants.
In the prior art, usually hot melt adhesive is selected to carry out between frame and fuel cell chip as gasket material
Sealing.On the one hand mechanical strength is improved at protection membrane electrode both ends；On the other hand air seal is carried out at gas diffusion layers both ends.
Such as patent document (CN103715435B) discloses a kind of edge banding frame technique of polymer electrolyte membrane electrode, specifically, will
Membrane electrode qualified product carries out cathode and anode mark, and carries out edge cutting to the membrane electrode after mark, keeps polymer dielectric film empty
White edge edge can be placed between two layers of frame；Membrane electrode is positioned using mold, it is ensured that Catalytic Layer is located at center, by
One layer of frame is fixed on the polymer dielectric film margin of membrane electrode side, and second layer frame is then fixed on film electricity
On the polymer dielectric film margin of the pole other side, and ensure that two layers of frame is symmetrically overlapped；The component is finally placed in two
In layer sheet metal, carry out hot-forming.
Patent document (CN1510770A) discloses a kind of sealing structure of fuel cell, including membrane electrode, deflector, close
Seal, the membrane electrode are located at centre, and the deflector is pressed together on the two sides of the membrane electrode, and the sealing ring, which is located at, leads
The surface of flowing plate and membrane electrode pressing, which is characterized in that the membrane electrode includes active region and seal area, wherein seal area
It is located at the surrounding of active region, the active region includes proton exchange membrane, porous support material, catalyst, and the catalyst is attached
On porous support material and be pressed together on proton exchange membrane two sides, the seal area by active region proton exchange membrane or
Porous support material extends outwardly and fills infiltration hot melt adhesive plastics or thermoset rubber, resin composition, the thickness of the seal area
It spends identical as the thickness of active region.
Patent document (CN104617310B) discloses a kind of preparation method of fuel cell membrane electrode with sealed frame,
Include the following steps: S1, have hot melt adhesive film respectively by polymer dielectric film feed rolls and with identical aperture position
Two sealed frame feed rolls will be in polymer dielectric film and sealed frame feed material hot-platen；S2, catalyst is matched
The catalyst slurry of ink shape is made, under high temperature environment, catalyst slurry is coated to gas is made on gas diffusion layers and is expanded
Dissipate electrode；S3, pass through hot-press arrangement, gas-diffusion electrode made from step S2 is hot-pressed onto polymer electrolytic made from step S1
The two sides of plasma membrane.
The technical solution that above-mentioned patent provides is all made of hot melt adhesive and is sealed as gasket material, however, hot melt adhesive exists
There are excessive glue phenomenons in fuel cell use process, may pollute to membrane electrode, to influence battery performance；Another party
Face, which needs specific processing equipment, and curing time is long, to affect production efficiency.
In consideration of it, overcoming defect present in the above-mentioned prior art is this field urgent problem to be solved.
Summary of the invention
It is asked in the prior art using the technology that hot melt adhesive sealing fuel cell membrane electrode will affect battery performance to overcome
Topic, the present invention provides the encapsulating methods and sealing structure of a kind of fuel cell membrane electrode and frame.
To achieve the goals above, the encapsulating method of a kind of fuel cell membrane electrode and frame disclosed by the invention, comprising:
Step S1: cutting the frame, and handle the jamb surface, and the surface for increasing the frame is viscous
Power；
Step S2: UV glue is coated on the frame；
Step S3: the frame and the membrane electrode are posted and fixed；
Step S4: using UV glue described in ultraviolet light and make the UV adhesive curing.
Further, in step S1, cutting the frame includes that frame is divided into upper side frame and two layers of lower frame.
In step S3, the frame and the membrane electrode are posted and fixed including distinguishing the upper side frame and lower frame
After being placed in the upper and lower surface of the membrane electrode, while posting and fixing the upper side frame and lower frame.
Further, in step S3, post and fix the upper side frame and lower frame include to the upper side frame under
Frame applies pressure, makes to include that the bubble that is divided between upper side frame and the frame and membrane electrode of lower frame of the frame is discharged.
Further, in step S3, the membrane electrode includes proton exchange membrane and catalyst layer, the frame with it is described
Proton exchange membrane posts and fixes.
Further, in step S1, carrying out processing to the jamb surface includes carrying out plasma to the jamb surface
Body activation.
Further, in step S4, using UV glue described in ultraviolet light and the UV adhesive curing is made to include from the side
Frame and the membrane electrode joint place are to external exposure.
The present invention also provides the sealing structures of a kind of fuel cell membrane electrode and frame, which is characterized in that
The membrane electrode includes proton exchange membrane and catalyst layer, and the catalyst layer is set to the proton exchange membrane or more
The intermediate region on two sides；
The frame is set to the neighboring area of the proton exchange membrane upper and lower surface；
Proton exchange membrane described in the frame covering part, and the frame does not cover the catalyst layer；
Sealing structure is formed using UV glue between the membrane electrode and frame.
Further, the frame includes upper side frame and lower frame.
Further, it is designed with groove on the inside of the upper side frame and lower frame, the upper side frame groove and lower frame are recessed
Slot is oppositely arranged to form the frame groove, and the proton exchange membrane neighboring area can be embedded in the frame groove.
Technical solution provided by the invention seals the membrane electrode and frame of fuel cell using UV glue, due to the solidification of UV glue
Time is short, and solidification effect is good, and hardness range is between A40-A80, and the curing apparatus of UV glue is simple, it is only necessary to lamps and lanterns or transmission
Band does not apply pressure, without carrying out hot pressing to membrane electrode and frame with equipment such as hot press or roller presses so as to avoid solid
Sealant excessive glue causes the problem of proton exchange fouling membrane during change, simplifies process flow, reduces manufacturing cost.In addition,
In the use process of fuel cell, UV glue is not easy to be influenced by temperature, and solidification effect is stablized, and effectively increases fuel cell
Service life.
Detailed description of the invention
Comprising in the present specification and constituting the attached drawing of this specification a part and showing and meet the device of the invention and side
The embodiment of method, and meet advantages of the present invention and principle for explaining together with detailed description.In the accompanying drawings:
Fig. 1 is the flow chart for the encapsulating method that embodiment of the present invention provides；
Fig. 2 is the floor map for the sealing structure that embodiment of the present invention provides；
Fig. 3 is the schematic cross-section for the sealing structure that embodiment of the present invention provides.
Description of symbols
1, catalyst；2, proton exchange membrane；3, frame.
Specific embodiment
The specific embodiment that the invention will now be described in detail with reference to the accompanying drawings.However, the invention is not limited to be described below
Embodiment.In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other
Not constituting conflict can be combined with each other, and technical concept of the invention can with other well-known techniques or with those well-known techniques
Identical other technologies combination is implemented.
Present embodiments provide for the encapsulating methods of a kind of fuel cell membrane electrode and frame, shown referring to Fig.1, this implementation
The encapsulating method that mode provides includes:
Step S1: cutting the frame, and handle the jamb surface, and the surface for increasing the frame is viscous
Power；
Step S2: UV glue is coated on the frame；
Step S3: the frame and the membrane electrode are posted and fixed；
Step S4: using UV glue described in ultraviolet light and make the UV adhesive curing.
In present embodiment, polyethylene naphthalate (PEN) is can be used in frame or polyimides (PI) is made, wherein
PEN has excellent mechanical property, chemical stability and gas barrier property, and PI has good mechanical performance and dielectric properties
It is easy to reach good sealing effect with UV glue bond Deng, both materials.
Further, in step S1, cutting the frame includes that frame is divided into upper side frame and two layers of lower frame, and top
Frame and lower frame can be symmetrical structure.Monolithic seal ring thickness can be 25 μm, and the frame size of frame can be 75 ㎜ * 75
㎜, the inside casing size of frame can be 50 ㎜ *, 50 ㎜.The size of membrane electrode can be 65mm*65mm, and frame can be complete at this time
The edge of membrane electrode is covered, and the gap of the membrane electrode and frame formed by membrane electrode thickness can be filled by UV glue, forms sealing.
Further, in step S2, the coating thickness of UV glue can be between 15 μm -20 μm.
Further, in step S3, by the frame and the membrane electrode post and fix including by the upper side frame with
After lower frame is respectively placed in the upper and lower surface of the membrane electrode, while pressure is applied to the upper side frame and lower frame, makes frame
Frame and membrane electrode are placed on the glass plate of one piece of smooth placement and are formed admittedly to be bonded by the bubble discharge between membrane electrode
It is fixed.It overflows, can be wiped with non-dust cloth if any extra UV glue at this time.Further, the membrane electrode includes proton exchange membrane
With catalyst layer, the frame is posted and fixed with the proton exchange membrane.
Further, carrying out processing to the jamb surface includes carrying out plasma activation to the jamb surface, is made
It obtains jamb surface viscous force and is greater than 35dyne, frame can be specifically placed in plasma washing machine and be surface-treated, about half
It is taken out after hour.
Further, using UV glue described in ultraviolet light and the UV adhesive curing is made to include from the frame and the film
Electrode joint place is to external exposure.It can use the ultraviolet light irradiation that main launch wavelength is 365nm.It can first be irradiated in irradiation process
5 seconds or so, make UV glue primary solidification, then molding is fully cured in illumination to UV glue again, completes close between membrane electrode and frame
Solidification can be after primary solidification twice for envelope, Primary Location, so as to paste before UV glue is not fully cured to frame and membrane electrode
The position of conjunction is finely adjusted, and improves machining accuracy.
In the encapsulating method that present embodiment provides, hot melt adhesive is replaced to carry out using UV glue close between membrane electrode and frame
Envelope is particularly suitable for industrialized production, greatly improves production efficiency since the UV adhesive curing time is fast, simultaneously because basic in UV glue
Without organic solvent, will not be discharged in use to human body and atmosphere harmful substance, it is environment friendly and pollution-free.In addition, using side
The frame mode Nian Jie with proton exchange membrane, can save catalyst amount, reduce cost.The encapsulating method that present embodiment provides
The sealing that can be suitable between transparent or semitransparent frame and membrane electrode.
Present embodiment additionally provides the sealing structure of a kind of fuel cell membrane electrode and frame, referring to shown in Fig. 2-Fig. 3,
Membrane electrode includes proton exchange membrane and catalyst layer, and the catalyst layer is set to the middle area of the proton exchange membrane upper and lower surface
Domain；The frame is set to the neighboring area of the proton exchange membrane upper and lower surface；Proton exchange described in the frame covering part
Film, and the frame does not cover the catalyst layer；Sealing structure is formed using UV glue between the membrane electrode and frame.Specifically
, the frame includes upper side frame and lower frame, and upper side frame and lower frame can be covered each by proton exchange membrane upper and lower surface not
Region equipped with catalyst layer, and frame extends proton exchange membrane periphery.By proton exchange membrane between frame and proton exchange membrane
The micro gap that thickness is formed can be filled and be sealed using UV glue.
In present embodiment, the size of proton exchange membrane can be 65mm*65mm in the membrane electrode, and thickness can be 13
Between μm -25 μm.The size of catalyst layer can be 50 ㎜ *, 50 ㎜, and proton exchange membrane is overlapped with the center of catalyst layer, hold
Intelligible to be, to make frame and catalyst layer contacts, having a size of 50 ㎜ *, 50 ㎜, monolithic seal ring thickness can be with for the inside casing of frame
It is 25 μm, proton exchange film thickness can be 18 μm, and the UV glue thickness of single layer is about between 15 μm -20 μm.
In another embodiment, it is designed with groove on the inside of the upper side frame and lower frame, the upper side frame groove is under
Frame groove is oppositely arranged to form the frame groove, and the proton exchange membrane neighboring area can be embedded in the frame groove
In.To enable proton exchange membrane neighboring area to be embedded in frame groove, the depth of groove should be 15mm or so, to cover completely
Lid proton exchange membrane.
Unless otherwise instructed, the herein presented qualifier similar to " first ", " second " is not meant that suitable to the time
The restriction of sequence, quantity or importance, and be used for the purpose of the technical characteristic and another technology in the technical program
Feature is mutually distinguished.Similarly, the modifier similar to " about ", " approximatively " occurred before number herein generally comprises this
Number, and its specific meaning should understand in conjunction with context meaning.Similarly, only there is the name of specific quantity quantifier modification
Otherwise word should be regarded as again including plural form comprising singular herein, both may include in the technical scheme
The singular technical characteristic, also may include a plurality of technical characteristics.
In the description of the present invention, it is to be understood that, term " thickness ", "upper", "lower" " vertical ", " parallel ", "bottom",
The orientation or positional relationship of instructions such as " angles " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this hair
Bright and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that these
It is merely illustrative of, protection scope of the present invention is defined by the appended claims.Those skilled in the art is not carrying on the back
Under the premise of from the principle and substance of the present invention, various changes or modifications can be made to these embodiments, but these are changed
Protection scope of the present invention is each fallen with modification.
Claims (10)
1. the encapsulating method of a kind of fuel cell membrane electrode and frame, which comprises the following steps:
Step S1: the frame is cut, and the jamb surface is handled, for increasing the surface viscous force of the frame；
Step S2: UV glue is coated on the frame；
Step S3: the frame and the membrane electrode are posted and fixed；
Step S4: using UV glue described in ultraviolet light and make the UV adhesive curing.
2. encapsulating method according to claim 1, which is characterized in that in step S1, cutting the frame includes by frame
It is divided into upper side frame and two layers of lower frame.
3. encapsulating method according to claim 2, which is characterized in that in step S3, by the frame and the membrane electrode
After posting and fixing including the upper side frame and lower frame are respectively placed in the upper and lower surface of the membrane electrode, while being bonded and consolidating
The fixed upper side frame and lower frame.
4. encapsulating method according to claim 3, which is characterized in that in step S3, post and fix the upper side frame with
Lower frame includes applying pressure to the upper side frame and lower frame, make include the upper side frame and lower frame the frame and film
Interelectrode bubble discharge.
5. encapsulating method according to claim 1, which is characterized in that in step S3, the membrane electrode includes proton exchange
Film and catalyst layer, the frame are posted and fixed with the proton exchange membrane.
6. encapsulating method according to claim 1, which is characterized in that in step S1, handle the jamb surface
Including carrying out plasma activation to the jamb surface.
7. encapsulating method according to claim 1, which is characterized in that in step S4, utilize UV glue described in ultraviolet light
And the UV adhesive curing is made to include from the frame and the membrane electrode joint place to external exposure.
8. the sealing structure of a kind of fuel cell membrane electrode and frame, which is characterized in that
The membrane electrode includes proton exchange membrane and catalyst layer, and the catalyst layer is set to the proton exchange membrane upper and lower surface
Intermediate region；
The frame is set to the neighboring area of the proton exchange membrane upper and lower surface；
Proton exchange membrane described in the frame covering part, and the frame does not cover the catalyst layer；
Sealing structure is formed using UV glue between the membrane electrode and the frame.
9. sealing structure according to claim 8, which is characterized in that the frame includes upper side frame and lower frame.
10. sealing structure according to claim 9, which is characterized in that be designed on the inside of the upper side frame and lower frame recessed
Slot, the upper side frame groove and lower frame groove are oppositely arranged to form the frame groove, the proton exchange membrane neighboring area
It can be embedded in the frame groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910580149.4A CN110400944A (en) | 2019-06-28 | 2019-06-28 | A kind of encapsulating method and sealing structure of fuel cell membrane electrode and frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910580149.4A CN110400944A (en) | 2019-06-28 | 2019-06-28 | A kind of encapsulating method and sealing structure of fuel cell membrane electrode and frame |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509260A (en) * | 2020-04-14 | 2020-08-07 | 上海神力科技有限公司 | Method for improving stability of adhesive on frame surface of proton exchange membrane of fuel cell |
| CN112909291A (en) * | 2021-02-04 | 2021-06-04 | 山东魔方新能源科技有限公司 | Preparation method of membrane electrode, membrane electrode and fuel cell |
| WO2022090077A1 (en) * | 2020-10-26 | 2022-05-05 | Audi Ag | Method for producing and treating a framed proton-conductive membrane |
| CN114864990A (en) * | 2022-05-27 | 2022-08-05 | 上海电气集团股份有限公司 | Method for preparing single cell of fuel cell |
| CN114864961A (en) * | 2022-05-31 | 2022-08-05 | 上海电气集团股份有限公司 | Bipolar plate for fuel cell |
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| CN114864961A (en) * | 2022-05-31 | 2022-08-05 | 上海电气集团股份有限公司 | Bipolar plate for fuel cell |
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Application publication date: 20191101 |