CN207097957U - A kind of encapsulating structure of fuel cell EMA components - Google Patents
A kind of encapsulating structure of fuel cell EMA components Download PDFInfo
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- CN207097957U CN207097957U CN201720501102.0U CN201720501102U CN207097957U CN 207097957 U CN207097957 U CN 207097957U CN 201720501102 U CN201720501102 U CN 201720501102U CN 207097957 U CN207097957 U CN 207097957U
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- pem
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- diffusion layer
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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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- 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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Abstract
The utility model belongs to field of fuel cell technology, more particularly to a kind of encapsulating structure of fuel cell EMA components, it includes PEM, the cathode catalyst layer being separately positioned on two film surfaces of PEM and anode catalyst layer, the cathode diffusion layer that the porous carbon paper being crimped on cathode catalyst layer is formed, the anode diffusion layer of porous carbon paper composition being crimped on anode catalyst layer, the PUR adhesive layer set along PEM periphery, negative electrode encapsulation safe edge frame and anode and encapsulates safe edge frame.In encapsulating structure of the present utility model, component includes the CCM of the tunic containing catalysis of PEM and its Catalytic Layer composition of both sides, diffusion layer (porous carbon paper) is set on the outside of the proton membrane CCM containing Catalytic Layer, there is encapsulation safe edge film on the outside of carbon paper, the hot melt particle film layer on encapsulation safe edge film is melted by corresponding production tool heating, pressurization, and then cling CCM and realize the bonding of two panels encapsulation safe edge film, form the membrane electrode MEA of seven unifications.
Description
Technical field
The utility model belongs to field of fuel cell technology, and in particular to a kind of encapsulating structure of fuel cell EMA components.
Background technology
Fuel cell is a kind of device that the chemical energy of hydrogen and oxygen is directly changed into electric energy by electrochemical reaction.Fuel
Battery is generally made up of multiple single generator units, and each generator unit includes two electrodes (anode and negative electrode), this two
Electrode is separated by electrolyte element, and assembles in series with each other, forms fuel cell pack.By appropriate to the supply of each electrode
Reactant, i.e., another supply oxidant to electrode supply fuel, electrochemical reaction is realized, so as between the electrodes
Potential difference is formed, and therefore produces electric energy.
One of core component of fuel cell is membrane electrode MEA, membrane electrode by being sprayed above a PEM, film or
Catalyst (such as platinum carbon catalyst) in hot stamping, the conductive material of two loose structures, (such as carbon paper) are clipped in two groups of film two sides
Into.In electrochemical reaction region, the catalysis containing uniform tiny scattered initiation electrochemical reaction on the contact surface of film and carbon paper
Agent, such as metal platinum catalyst.The electronics that membrane electrode both sides generate during generation electrochemistry hair can be answered with highly conductive object,
Drawn by external circuit, form current loop, proton passes through the oxygen reduction of PEM and negative electrode into water H2O。
Common film electrode structure makes generally coats Catalytic Layer in Nafion PEMs both sides, on the periphery of film
The area for reserving one fixed width is used for the sealing gasket for setting both sides to isolate, and diffusion layer composition membrane electrode is then placed in both sides
MEA components.The parts such as PEM CCM that such preparation method contains catalyst coat, diffusion layer carbon paper are not formed
One overall structure, individually placed PEM (3) CCM, 2 diffusion layers containing catalyst coat are wanted when pile assembles
The MEA of carbon paper, composition, so not only need single positioning to place but also be unfavorable for mass, Automated assembly, and this is tied
The MEA of structure, sealing gasket, which acts directly on, is used as sealed compartment on CCM, easily causes the CCM ruptures of fragility so that sealing is lost
Effect.And for sealing expends costliness PEM, be unfavorable for reduction fuel cell articles cost of manufacture, and due to
The reaction zone of membrane electrode both sides just needs to coat Catalytic Layer, it is necessary to reserve the edge of correct position, therefore it is specific to produce needs
Frock carrys out accurate positioning, it is difficult to produces in batches, adds the difficulty of production.
Utility model content
To solve the deficiencies in the prior art, the utility model provides a kind of encapsulating structure of fuel cell EMA components.Should
Encapsulating structure is integral using safe edge film packaging by hot pressing is encapsulated, and has greatly reinforced EMA mechanical strength, is advantageous to suppress to urging
Leakage of the fuel gas and oxidant gas of agent layer supply to outside, encapsulates and also has location structure on integral MEA, side
Civilian dress is matched somebody with somebody.
Technical scheme provided by the utility model is as follows：
A kind of encapsulating structure of fuel cell EMA components, is comprised at least：
PEM, cathode catalyst layer and anode are respectively arranged with two film surfaces of the PEM
Catalyst layer；
The cathode diffusion layer being crimped on the cathode catalyst layer；
The anode diffusion layer being crimped on the anode catalyst layer；
The PUR adhesive layer set along the PEM periphery；
Negative electrode encapsulates safe edge frame, and the periphery of the negative electrode encapsulation safe edge frame and the PUR adhesive layer are gluing, described the moon
The inner circumferential of pole encapsulation safe edge frame is crimped on the periphery of the PEM；
Anode encapsulates safe edge frame, and the periphery of the anode encapsulation safe edge frame and the PUR adhesive layer are gluing, the sun
The inner circumferential of pole encapsulation safe edge frame is crimped on the periphery of the PEM.
Further：
The area of the cathode diffusion layer is less than the area of the PEM, and the cathode diffusion layer is crimped on described
In the region on the film surface of PEM；
The area of the anode diffusion layer is less than the area of the PEM, and the anode diffusion layer is crimped on described
In the region on the film surface of PEM.
Further：
The periphery of the cathode diffusion layer is crimped between the negative electrode encapsulation safe edge frame and the PEM；
The periphery of the anode diffusion layer is crimped between the anode encapsulation safe edge frame and the PEM.
Further：
The outer edge of the periphery of the cathode diffusion layer is closed in the negative electrode encapsulation safe edge frame and the proton exchange
Within the space that film is encircled into；
The outer edge of the periphery of the anode diffusion layer is closed in the anode encapsulation safe edge frame and the proton exchange
Within the space that film is encircled into.
In the above-mentioned technical solutions, seven are formed based on the encapsulation safe edge film that the PUR adhesive layer on the outside of diffusion layer is formed to close
One film electrode structure.The structure can safe edge film packaging by hot pressing be integral, and the structure formed has greatly reinforced EMA using encapsulating
Mechanical strength, be advantageous to suppress the fuel gas that is supplied to catalyst layer and oxidant gas to outside, outside leakage.
Further：
The area of the cathode catalyst layer is less than the area on the film surface of the PEM；
The area of the anode catalyst layer is less than the area on the film surface of the PEM.
Further：
The contact surface of the cathode diffusion layer and the cathode catalyst layer be located at the cathode diffusion layer towards described
In the region of the side surface of negative electrode encapsulation safe edge frame one；
The contact surface of the anode diffusion layer and the anode catalyst layer be located at the anode diffusion layer towards described
In the region of the side surface of anode encapsulation safe edge frame one.
Further, the encapsulating structure of the fuel cell EMA components is each described fixed at least provided with two positioning through hole
Position through hole sequentially passes through the negative electrode encapsulation safe edge frame, the PUR adhesive layer and anode encapsulation safe edge frame, or,
Each positioning through hole sequentially passes through the negative electrode encapsulation safe edge frame, the PUR adhesive layer and the PEM
Intersection and anode encapsulation safe edge frame.
Further, two positioning through hole are respectively arranged at the two of the encapsulating structure of the fuel cell EMA components
End.
In the above-mentioned technical solutions, multiple positioning through hole composition location structures, positioning in assembling process and right is added
The accuracy of accurate reliability, convenient equipment.
Further：
The cathode diffusion layer is porous carbon paper；
The anode diffusion layer is porous carbon paper.
Further, the thickness of the PUR adhesive layer is equal to the thickness of the PEM.
In the encapsulating structure of fuel cell EMA components provided by the utility model, component include PEM and
Diffusion layer (porous carbon is set on the outside of the tunic CCM containing catalysis of the Catalytic Layer composition of its both sides, the proton membrane CCM containing Catalytic Layer
Paper), there is encapsulation safe edge film in carbon paper outside, and the hot melt particle on encapsulation safe edge film is made by corresponding production tool heating, pressurization
Film layer melts, and then clings CCM and realize the bonding of two panels encapsulation safe edge film, forms the membrane electrode MEA of seven unifications.
Generally, the utility model is designed reasonably, efficiency of the MEA in pile assembling process is greatly facilitated.Encapsulation
After safe edge film packaging by hot pressing is integral, EMA mechanical strength has been greatly reinforced, has been advantageous to suppress the fuel supplied to catalyst layer
The leakage of gas and oxidant gas to outside, encapsulates and location structure is additionally provided with integral MEA, convenient for assembly, convenient
MEA storage and into the operating during production.
Brief description of the drawings
Fig. 1 is the explosive view of the encapsulating structure of fuel cell EMA components provided by the utility model.
Fig. 2 is the partial sectional view of the encapsulating structure of fuel cell EMA components provided by the utility model.
Fig. 3 is all mappings of the encapsulating structure of fuel cell EMA components provided by the utility model.
In accompanying drawing 1,2,3, the structure list representated by each label is as follows：
1st, negative electrode encapsulation safe edge frame, 2, cathode diffusion layer, 3, PEM, 4, anode encapsulation safe edge frame, 5, PUR
Adhesive layer, 6, anode catalyst layer, 7, positioning through hole, 8, anode diffusion layer.
Embodiment
Principle of the present utility model and feature are described below, illustrated embodiment is served only for explaining the utility model,
It is not intended to limit the scope of the utility model.
In a detailed embodiment, as shown in Figure 1, 2, the encapsulating structure of fuel cell EMA components is handed over including proton
Change film 3, the cathode catalyst layer being separately positioned on two film surfaces of PEM 3 and anode catalyst layer 6, be crimped on
The cathode diffusion layer 2 of porous carbon paper composition on cathode catalyst layer, the porous carbon paper being crimped on anode catalyst layer 6 are formed
Anode diffusion layer 8, the PUR adhesive layer 5, the negative electrode that are set along the periphery of PEM 3 encapsulate safe edge frame 1 and anode seals
Safe edge frame 4 is filled, the thickness of PUR adhesive layer 5 is equal to the thickness of PEM 3.
The area of cathode catalyst layer is less than the area on the film surface of PEM 3, and the area of cathode diffusion layer 2 is small
In the area of PEM 3, cathode diffusion layer 2 is crimped in the region on film surface of PEM 3, cathode diffusion layer 2
It is located at the contact surface of cathode catalyst layer in the region towards the side surface of negative electrode encapsulation safe edge frame 1 one of cathode diffusion layer 2, it is cloudy
The periphery of pole encapsulation safe edge frame 1 and PUR adhesive layer 5 are gluing, and the inner circumferential of negative electrode encapsulation safe edge frame 1 is crimped on PEM 3
Periphery on, the periphery of cathode diffusion layer 2 is crimped between negative electrode encapsulation safe edge frame 1 and PEM 3, cathode diffusion layer
The outer edge of 2 periphery is closed within the space that negative electrode encapsulation safe edge frame 1 and PEM 3 are encircled into.
The area of anode catalyst layer 6 is less than the area on the film surface of PEM 3, and the area of anode diffusion layer 8 is small
In the area of PEM 3, anode diffusion layer 8 is crimped in the region on film surface of PEM 3, anode diffusion layer 8
It is located at the contact surface of anode catalyst layer 6 in the region towards the side surface of anode encapsulation safe edge frame 4 one of anode diffusion layer 8,
The periphery of anode encapsulation safe edge frame 4 and PUR adhesive layer 5 are gluing, and the inner circumferential of anode encapsulation safe edge frame 4 is crimped on proton exchange
On the periphery of film 3, the periphery of anode diffusion layer 8 is crimped between anode encapsulation safe edge frame 4 and PEM 3, and anode expands
The outer edge for dissipating the periphery of layer 8 is closed within the space that anode encapsulation safe edge frame 4 and PEM 3 are encircled into.
Said structure can be integral using safe edge film packaging by hot pressing is encapsulated, and encapsulation safe edge film, institute's shape are formed on the outside of carbon paper
Into structure greatly reinforced EMA mechanical strength, be advantageous to suppress the fuel gas and oxidant gas supplied to catalyst layer
Leakage of the body to outside, outside.
As shown in figure 3, the both ends of the encapsulating structure of fuel cell EMA components are diagonally provided with two positioning through hole 7, it is each fixed
Position through hole 7 sequentially passes through intersection and the anode envelope of negative electrode encapsulation safe edge frame 1, PUR adhesive layer 5 and PEM 3
Fill safe edge frame 4.
Above-mentioned positioning through hole forms location structure, add positioning and alignment in assembling process reliability it is accurate
Property, convenient equipment.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc., guarantor of the present utility model should be included in
Within the scope of shield.
Claims (10)
1. a kind of encapsulating structure of fuel cell EMA components, it is characterised in that comprise at least：
PEM (3), cathode catalyst layer and sun are respectively arranged with two film surfaces of the PEM (3)
Electrode catalyst layer (6)；
The cathode diffusion layer (2) being crimped on the cathode catalyst layer；
The anode diffusion layer (8) being crimped on the anode catalyst layer (6)；
The PUR adhesive layer (5) set along the PEM (3) periphery；
Negative electrode encapsulation safe edge frame (1), the periphery of the negative electrode encapsulation safe edge frame (1) and the PUR adhesive layer (5) are gluing, institute
The inner circumferential for stating negative electrode encapsulation safe edge frame (1) is crimped on the periphery of the PEM (3)；
Anode encapsulation safe edge frame (4), the periphery of the anode encapsulation safe edge frame (4) and the PUR adhesive layer (5) are gluing, institute
The inner circumferential for stating anode encapsulation safe edge frame (4) is crimped on the periphery of the PEM (3).
2. the encapsulating structure of fuel cell EMA components according to claim 1, it is characterised in that：
The area of the cathode diffusion layer (2) is less than the area of the PEM (3), cathode diffusion layer (2) crimping
In the region on the film surface of the PEM (3)；
The area of the anode diffusion layer (8) is less than the area of the PEM (3), anode diffusion layer (8) crimping
In the region on the film surface of the PEM (3).
3. the encapsulating structure of fuel cell EMA components according to claim 2, it is characterised in that：
The periphery of the cathode diffusion layer (2) be crimped on negative electrode encapsulation safe edge frame (1) and the PEM (3) it
Between；
The periphery of the anode diffusion layer (8) be crimped on anode encapsulation safe edge frame (4) and the PEM (3) it
Between.
4. the encapsulating structure of fuel cell EMA components according to claim 3, it is characterised in that：
The neighboring of the cathode diffusion layer (2) encapsulates safe edge frame (1) and the PEM along the negative electrode is closed in
(3) within the space being encircled into；
The neighboring of the anode diffusion layer (8) encapsulates safe edge frame (4) and the PEM along the anode is closed in
(3) within the space being encircled into.
5. the encapsulating structure of fuel cell EMA components according to claim 2, it is characterised in that：The cathod catalyst
The area of layer is less than the area on the film surface of the PEM (3), and the area of the anode catalyst layer (6) is less than described
The area on the film surface of PEM (3).
6. the encapsulating structure of fuel cell EMA components according to claim 5, it is characterised in that：
The contact surface of the cathode diffusion layer (2) and the cathode catalyst layer be located at the cathode diffusion layer (2) towards institute
In the region for stating the side surface of negative electrode encapsulation safe edge frame (1) one；
The contact surface of the anode diffusion layer (8) and the anode catalyst layer (6) be located at the anode diffusion layer (8) towards
In the region of the side surface of anode encapsulation safe edge frame (4) one.
7. the encapsulating structure of fuel cell EMA components according to claim 1, it is characterised in that：The fuel cell EMA
For the encapsulating structure of component at least provided with two positioning through hole (7), each positioning through hole (7) sequentially passes through the negative electrode envelope
Safe edge frame (1), the PUR adhesive layer (5) and anode encapsulation safe edge frame (4) are filled, or, each positioning through hole (7)
Sequentially pass through the boundary of the negative electrode encapsulation safe edge frame (1), the PUR adhesive layer (5) and the PEM (3)
Place and anode encapsulation safe edge frame (4).
8. the encapsulating structure of fuel cell EMA components according to claim 7, it is characterised in that：Two positioning are logical
Hole (7) is respectively arranged at the both ends of the encapsulating structure of the fuel cell EMA components.
9. the encapsulating structure of the fuel cell EMA components according to any one of claim 1 to 8, it is characterised in that：
The cathode diffusion layer (2) is porous carbon paper；The anode diffusion layer (8) is porous carbon paper.
10. the encapsulating structure of the fuel cell EMA components according to any one of claim 1 to 8, it is characterised in that：It is described
The thickness of PUR adhesive layer (5) is equal to the thickness of the PEM (3).
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216724A (en) * | 2018-08-13 | 2019-01-15 | 中机国际工程设计研究院有限责任公司 | Fuel cell membrane electrode laminating apparatus and applying method |
| CN110444790A (en) * | 2019-08-29 | 2019-11-12 | 武汉中极氢能产业创新中心有限公司 | Membrane electrode assembly, preparation method and fuel-cell single-cell |
| CN110867600A (en) * | 2019-11-12 | 2020-03-06 | 上海唐锋能源科技有限公司 | Injection membrane electrode MEA and processing method thereof |
| CN112151828A (en) * | 2020-09-18 | 2020-12-29 | 一汽解放汽车有限公司 | Hydrogen fuel cell and preparation method thereof, clamp for preparing hydrogen fuel cell and use method |
| CN112582656A (en) * | 2021-02-25 | 2021-03-30 | 国家电投集团氢能科技发展有限公司 | Membrane electrode assembly, fuel cell and fuel cell |
| CN114464852A (en) * | 2021-12-25 | 2022-05-10 | 安徽明天氢能科技股份有限公司 | Novel sealing process for fuel cell membrane electrode |
| WO2022116912A1 (en) * | 2020-12-03 | 2022-06-09 | 中国科学院大连化学物理研究所 | Fuel cell membrane electrode sealing assembly, encapsulation process, and device for continuous encapsulation |
| DE102020216099A1 (en) | 2020-12-17 | 2022-06-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Electrochemical cell and method of making an electrochemical cell |
| CN115064746A (en) * | 2022-07-26 | 2022-09-16 | 中国科学院青岛生物能源与过程研究所 | Production system suitable for fuel cell membrane electrode, use method and application |
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2017
- 2017-05-04 CN CN201720501102.0U patent/CN207097957U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109216724B (en) * | 2018-08-13 | 2020-11-06 | 中机国际工程设计研究院有限责任公司 | Fuel cell membrane electrode bonding device and bonding method |
| CN109216724A (en) * | 2018-08-13 | 2019-01-15 | 中机国际工程设计研究院有限责任公司 | Fuel cell membrane electrode laminating apparatus and applying method |
| CN110444790A (en) * | 2019-08-29 | 2019-11-12 | 武汉中极氢能产业创新中心有限公司 | Membrane electrode assembly, preparation method and fuel-cell single-cell |
| CN110867600B (en) * | 2019-11-12 | 2021-04-27 | 上海唐锋能源科技有限公司 | Injection membrane electrode MEA and processing method thereof |
| CN110867600A (en) * | 2019-11-12 | 2020-03-06 | 上海唐锋能源科技有限公司 | Injection membrane electrode MEA and processing method thereof |
| CN112151828A (en) * | 2020-09-18 | 2020-12-29 | 一汽解放汽车有限公司 | Hydrogen fuel cell and preparation method thereof, clamp for preparing hydrogen fuel cell and use method |
| CN112151828B (en) * | 2020-09-18 | 2022-02-18 | 一汽解放汽车有限公司 | Hydrogen fuel cell and preparation method thereof, clamp for preparing hydrogen fuel cell and use method |
| WO2022116912A1 (en) * | 2020-12-03 | 2022-06-09 | 中国科学院大连化学物理研究所 | Fuel cell membrane electrode sealing assembly, encapsulation process, and device for continuous encapsulation |
| DE102020216099A1 (en) | 2020-12-17 | 2022-06-23 | Robert Bosch Gesellschaft mit beschränkter Haftung | Electrochemical cell and method of making an electrochemical cell |
| CN112582656A (en) * | 2021-02-25 | 2021-03-30 | 国家电投集团氢能科技发展有限公司 | Membrane electrode assembly, fuel cell and fuel cell |
| CN112582656B (en) * | 2021-02-25 | 2021-06-04 | 国家电投集团氢能科技发展有限公司 | Membrane electrode assembly, fuel cell and fuel cell |
| CN114464852A (en) * | 2021-12-25 | 2022-05-10 | 安徽明天氢能科技股份有限公司 | Novel sealing process for fuel cell membrane electrode |
| CN115064746A (en) * | 2022-07-26 | 2022-09-16 | 中国科学院青岛生物能源与过程研究所 | Production system suitable for fuel cell membrane electrode, use method and application |
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