CN108054406A - Fuel cell seal assembly and encapsulating method - Google Patents

Fuel cell seal assembly and encapsulating method Download PDF

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Publication number
CN108054406A
CN108054406A CN201711495635.3A CN201711495635A CN108054406A CN 108054406 A CN108054406 A CN 108054406A CN 201711495635 A CN201711495635 A CN 201711495635A CN 108054406 A CN108054406 A CN 108054406A
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CN
China
Prior art keywords
support structure
fuel cell
proton exchange
exchange membrane
catalyst layer
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Pending
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CN201711495635.3A
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Chinese (zh)
Inventor
马传明
曾嘉年
李目武
闫志龙
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Beijing University of Aeronautics and Astronautics
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Beijing University of Aeronautics and Astronautics
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Priority to CN201711495635.3A priority Critical patent/CN108054406A/en
Publication of CN108054406A publication Critical patent/CN108054406A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/02Details
    • H01M8/0271Sealing or supporting means around electrodes, matrices or membranes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/02Details
    • H01M8/0271Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0273Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/02Details
    • H01M8/0271Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276Sealing means characterised by their form
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/02Details
    • H01M8/0271Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0286Processes for forming seals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/10Fuel cells with solid electrolytes
    • H01M2008/1095Fuel cells with polymeric electrolytes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing 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 present invention provides a kind of fuel cell seal assembly, including sealing element and support construction, to contain bipolar plates, the sealing of the fuel cell of membrane electrode, bipolar plates are equipped with seal groove, membrane electrode includes proton exchange membrane, sealing element is arranged in seal groove, support construction includes upper support structure and lower support structure, one end of upper support structure and one end of lower support structure are respectively formed the conformable region for being bonded with top surface in proton exchange membrane and bottom surface, the other end of upper support structure and the other end of lower support structure bond, formed for sealing element against seal area, fuel cell seal assembly structure provided by the invention is simple, production difficulty coefficient is low and sealing effect is good, with very strong economy and practicability.The present invention also provides a kind of fuel cell and the encapsulating methods of fuel cell.

Description

Fuel cell seal assembly and encapsulating method
Technical field
The invention belongs to hydrogen-oxygen proton exchange membrane fuel cell field, the seal assembly of more particularly to a kind of fuel cell and Encapsulating method.
Background technology
Fuel cell is a kind of power generator that will be present in fuel and electric energy is converted into the chemical energy in oxidant. Fuel cell is made of the superposition of multiple monocells, and each battery cell mainly includes bipolar plates and membrane electrode.To ensure into combustion Fuel-cell fuel and oxidant can be assigned to membrane electrode surface really without mixing, and sealing technique is very crucial.
In existing sealing technique, mainly it is sealed using sealing ring.The invention of Application No. 201480029887.5 is special Profit discloses a kind of seal construction of fuel cell, and variform bullet is placed in the bipolar plates seal groove of membrane electrode both sides Property sealing material, the secondary lip of the main lip of one side and opposite side cooperates, and the sealing material of both sides can be because generating shape in stress Become and be close to membrane electrode, reach sealing effect.But the elaxtic seal of irregular shape of the present invention is complicated, High to requirement on machining accuracy, production difficulty is big, and processing program is complicated, and installation effectiveness is low.
Therefore, it is urgent to provide a kind of simple in structure, highly practical.The good fuel cell seal group of at low cost and sealing effect Part.
The content of the invention
Present invention aims at providing, a kind of fuel cell simple in structure, that production difficulty coefficient is low and sealing effect is good is close Sealing assembly, fuel cell and fuel cell seal method.
To achieve the above object, the present invention provides a kind of fuel cell seal assembly, to contain bipolar plates, membrane electrode The sealing of fuel cell, the bipolar plates are equipped with seal groove, and the membrane electrode includes proton exchange membrane, including:Sealing element, The sealing element is arranged in the seal groove;Support construction, the support construction include upper support structure and lower support structure, One end of the upper support structure and one end of the lower support structure be respectively formed for top surface in the proton exchange membrane and The conformable region of bottom surface fitting, the other end of the upper support structure and the other end of the lower support structure bond, and are formed and supplied With the sealing element against seal area.
It is preferred that the sealing element is by dispenser, the dispensing in the seal groove is formed.With dispenser directly in seal groove Interior dispensing forms sealing element.It can ensure sealing element after the completion of dispensing, with the seal groove secure bond in bipolar plates, so keep away Exempt from seal process, sealing element generates displacement, influences sealing effect.
It is preferred that the sealing element is made of elastic material.Sealing element is made with elastic material, it is very strong sealing element can be assigned Deformability, in seal process, sealing element can with the variation of pressure generate deformation, preferably fuel electrode is sealed.
It is preferred that the support construction is in Y types, the Y types openend of the support construction, which is formed, to be supplied and the proton exchange The conformable region of top surface and bottom surface fitting on film, the Y types closed end of the support construction formed for the sealing element against Seal area.
The present invention also provides a kind of fuel cell, including:Fuel cell fuel cell seal group as described above Part, the fuel cell include bipolar plates and membrane electrode, and the bipolar plates are equipped with seal groove, and the membrane electrode includes proton Exchange membrane.
The conformable region of upper support structure and lower support structure can respectively carry out the upper top surface and bottom surface of proton exchange membrane Bonding, and the other end of upper support structure and lower support structure bonds to form seal area, upper support structure and lower support structure phase Mutually cooperation, by the edge wrap of proton exchange membrane in support construction, realizes and proton exchange membrane is fully sealed.It is in addition, close During envelope, on the one hand seal area and sealing element are against can promote the bonding of the seal area of upper support structure and lower support structure more Step up close, enhancing support construction is to the sealing effect of proton exchange membrane, and on the other hand, sealing element and seal area are against realizing double Sealing between pole plate seal groove and support construction prevents proton exchange membrane both sides gas from mutually going here and there, and the sealing for enhancing fuel cell is strong Degree improves the safety coefficient of fuel cell.
It is preferred that the membrane electrode includes proton exchange membrane, anode catalyst layer, anode gas diffusion layer, cathode catalysis Oxidant layer and cathode gas diffusion layer, the anode catalyst layer are located at described proton exchange membrane the upper surface of, and the anodic gas expands It dissipates layer and is located at described anode catalyst layer the upper surface of, the cathode catalyst layer is located at below the proton exchange membrane, described Cathode gas diffusion layer is located at below the cathode catalyst layer.
It is preferred that the conformable region of the upper support structure is arranged at the anode catalyst layer and anodic gas diffusion Between layer, the conformable region of the lower support structure is arranged between the cathode catalyst layer and the cathode gas diffusion layer. Gas diffusion layers mainly play gas diffusion, collected current and physical support in a fuel cell.Support construction is arranged on and is urged Between agent layer and gas diffusion layers, on the one hand, the physical support effect of air supporting material can be avoided since pressure is excessive right Support construction damages, and on the other hand, in seal process, gas diffusion layers are subject to ambient pressure, are subsequently communicated to support Structure, so as to strengthen be bonded fastness of the support construction conformable region with membrane electrode, enhancing support construction is to the sealing effect of membrane electrode.
The present invention also provides a kind of fuel cell seal method, for sealing the fuel cell comprising bipolar plates, membrane electrode Monomer, the bipolar plates are equipped with seal groove, and the membrane electrode includes proton exchange membrane, which is characterized in that including:
(1) sealing element is prepared, dispensing forms sealing element in the seal groove with dispenser;
(2) support construction is prepared, the support construction includes upper support structure and lower support structure, the upper support structure One end and the lower support structure one end be respectively formed for top surface and bottom surface are bonded in the proton exchange membrane patch Area is closed, the other end of the upper support structure and the other end of the lower support structure are bonded, formed for being supported with the sealing element The seal area leaned on;
(3) conformable region of the upper support structure is bonded with the upper top surface of the proton exchange membrane, by the lower support The conformable region of structure is bonded with the bottom surface of the proton exchange membrane;
(4) two pieces of bipolar plates are born against in the both sides up and down of the seal area, completes sealing.
In the seal groove of bipolar plates directly sealing element, manufactured sealing element bottom surface and seal groove are formed with dispenser dispensing It pastes, sealing element is directly anchored in seal groove, avoids moving due to extruding in seal process, ensure that sealing The sealing effect of part.By the upper top surface in the Tie He areas and proton exchange membrane of upper support structure and lower support structure and bottom face paste It closes, then seal area is bonded again, proton exchange membrane can be entirely sealed in support construction, be that the chemistry of membrane electrode is anti- The reaction environment of safety and stability should be provided.
It is preferred that the membrane electrode includes proton exchange membrane, anode catalyst layer, anode gas diffusion layer, cathode catalysis Oxidant layer and cathode gas diffusion layer, the anode catalyst layer are located at described proton exchange membrane the upper surface of, and the anodic gas expands It dissipates layer and is located at described anode catalyst layer the upper surface of, the cathode catalyst layer is located at below the proton exchange membrane, described Cathode gas diffusion layer is located at below the cathode catalyst layer, and the step (3) includes:
(1) top surface is coated with to form the anode catalyst layer in the proton exchange membrane, under the proton exchange membrane Bottom-surface coated forms the cathode catalyst layer;
(2) conformable region of the upper support structure is bonded with the anode catalyst layer, by the lower support structure Conformable region is bonded with the cathode catalyst layer;
(3) anode gas diffusion layer is bonded with the upper support structure, by the cathode gas diffusion layer and institute State lower support structure fitting.
Compared with prior art, fuel cell seal assembly provided by the invention, sealing element is arranged in seal groove, can Sealing element is prevented in seal process, displacement is generated due to being subject to extraneous squeeze, avoids causing poorly sealed, sealing loosely Situation.Support construction includes upper support structure and lower support structure, upper support structure one end and lower support structure one end respectively with Upper top surface and the bottom surface bonding of proton exchange film edge, and the other end of upper support structure and lower support structure mutually bonds, So upper support structure and lower support structure cooperate, and proton exchange film edge is completely encapsulated in support construction, realize Proton exchange membrane is fully sealed.In addition, in seal process, on the one hand seal area and sealing element are against can promote upper support The bonding of the seal area of structure and lower support structure is even closer, enhances sealing effect of the support construction to proton exchange membrane, another Aspect, sealing element is with seal area against the sealing between realization bipolar plates seal groove and support construction prevents proton exchange membrane both sides Gas is mutually gone here and there, and enhances the sealing intensity of fuel cell, improves the safety coefficient of fuel cell.Fuel cell provided by the invention is close Sealing assembly need to only use sealing element and support construction achieve that the security seal to fuel cell, consumptive material is few, it is simple in structure, Production difficulty coefficient is low, has stronger economy and practicability.To sum up, fuel cell seal assembly structure provided by the invention Simply, production difficulty coefficient is low and sealing effect is good, has very strong economy and practicability.
Description of the drawings
Fig. 1 is fuel cell seal assembly structure schematic diagram of the present invention;
Fig. 2 is schematic diagram before fuel cell seal assembly of the present invention sealing;
Fig. 3 is schematic diagram after fuel cell seal assembly of the present invention sealing.
Specific embodiment
For the technical solution, construction feature, the technique effect realized that the present invention will be described in detail, below in conjunction with specific implementation Mode simultaneously coordinates attached drawing to be explained in detail.
As shown in Figure 1, fuel cell seal assembly 100 provided by the invention, contains bipolar plates 1 and membrane electrode for sealing Fuel cell, bipolar plates 1 be equipped with seal groove 11, membrane electrode include proton exchange membrane 3.Fuel cell seal assembly 100 wraps Containing sealing element 12 and support construction 2.Sealing element 12 is arranged in the seal groove 11 of bipolar plates 1, and support construction 2 includes upper support structure 21 and lower support structure 22, upper support structure 21 is located at proton exchange membrane 3 the upper surface of, and lower support structure 22 is located at proton exchange membrane Below 3, and one end of upper support structure 21, one end of lower support structure 22 be respectively equipped with top surface in proton exchange membrane 3, under The conformable region 23 of bottom surface fitting, and the other end of the other end of upper support structure 21 and lower support structure 22 mutually bonds, and is formed For with sealing element 12 against seal area 24.More preferably, support construction is in Y types, the Y types openend of support construction formed for The conformable region of top surface and bottom surface fitting in proton exchange membrane, the Y types closed end of support construction formed for sealing element against Seal area.
During sealing, with dispenser, dispensing forms sealing element 12 in seal groove 11, support construction 2 is prepared, including upper branch Support structure 21 and lower support structure 22, by the conformable region 23 of upper support structure 21 and lower support structure 22 respectively with proton exchange membrane 3 upper top surface is bonded with bottom surface, and the seal area 24 formed with upper support structure 21 and the bonding of lower support structure 22 coordinates, will The edge of proton exchange membrane 3 is entirely sealed in support construction 2, and afterwards, two pieces of bipolar plates 1 equipped with sealing element 12 are supported respectively Upper support structure 21 and lower support structure 22 are pressed, completes the complete seal to fuel cell.Specifically in seal process, sealing element The 12 dispensing completions in seal groove 11 by dispenser, the shape size of sealing element 12 can be according to the shape size of actual seal groove And required sealing effect is adjusted.In the present embodiment, to reach better seal effect, with dispenser in seal groove Point uv-curable glue in 11, by adjusting the operating pressure of dispenser, speed, lift pin height and running orbit, accurate control points Go out the shape of glue, then sealing element 12 is formed after ultraviolet curing, specifically, the cross section of obtained sealing element 12 is arc Protrusion, and the bottom surface of sealing element 12 is fixedly connected with seal groove 11, it is ensured that sealing element 12 is not subjected to displacement in sealing.
As shown in Fig. 2, it is specific in the present embodiment, membrane electrode further include anode catalyst layer 41, cathode catalyst layer 42, Anode gas diffusion layer 51 and cathode gas diffusion layer 52.Anode catalyst layer 41 is located at proton exchange membrane 3 the upper surface of, anode gas Body diffused layer 51 is located at anode catalyst layer 41 the upper surface of, and cathode catalyst layer 42 is located at below proton exchange membrane 3, cathode gas Body diffused layer 52 is located at below cathode catalyst layer 42.In a fuel cell, gas diffusion layers mainly play collected current and object Manage supporting role.In the present embodiment, in order to realize the sealing to fuel cell, and fuel cell provided by the invention is not damaged Seal assembly 100, by the conformable region 23 of upper support structure 21 be arranged at anode catalyst layer 41 and anode gas diffusion layer 51 it Between, the conformable region 23 of lower support structure 22 is arranged between cathode catalyst layer 42 and cathode gas diffusion layer 52.Gas expands The physical support effect for dissipating layer can damage of the less seal pressure to upper support structure 21 and lower support structure 22.And it was sealing After Cheng Zhong, anode gas diffusion layer 51 and cathode gas diffusion layer 52 are subject to ambient pressure, then pressure transmission is given to upper support Structure 21 and lower support structure 22, realize upper support structure 21, lower support structure 22 conformable region 23 and proton exchange membrane 3 it is tight Closely connected conjunction.Extraneous seal pressure by intermediate medium by pressure transmission to support construction 2, can weaken since ambient pressure is excessive or It is uneven.Support construction 2 is caused to impact, makes the active force between support construction 2 and proton exchange membrane 3 more uniform, stable.
Continue as shown in Fig. 2, when sealing, first with dispenser, dispensing forms sealing element 12, sealing element 12 in seal groove 11 It is made of elastic material, in sealing, sealing element 12 can be deformed upon with the shape of pressure and seal groove 11, make sealing tighter It is real.Support construction 2 is prepared, including upper support structure 21 and lower support structure 22.After the completion of prepared by support construction 2, handed in proton The upper top surface for changing film 3 is coated with to form anode catalyst layer 41, is coated with to form cathode catalyst layer in the bottom surface of proton exchange membrane 3 42, then the conformable region 23 of upper support structure 21 is bonded with 41 edge of anode catalyst layer, by the fitting of lower support structure 22 Area 23 is bonded with 42 edge of cathode catalyst layer, after the completion of fitting, by 51 edge of anode gas diffusion layer and upper support structure 21 Conformable region 23 bond, 52 edge of cathode gas diffusion layer is bonded with the conformable region 23 of lower support structure 22, finally, by two pieces Bipolar plates 1 are born against in anode gas diffusion layer 51 and cathode gas diffusion layer 52, and sealing element 12 is caused to be resisted against branch On the seal area 24 that support structure 21 is formed with the bonding of lower support structure 22, so as to complete the entire seal process of fuel cell (such as Shown in Fig. 3).
In conclusion fuel cell seal assembly 100 provided by the invention, sealing element 12 is arranged in seal groove 11, Sealing element 12 can be prevented in seal process, displacement is generated due to being subject to extraneous squeeze, avoid causing poorly sealed, sealing not The situation in jail.Support construction 2 includes upper support structure 21 and lower support structure 22, the conformable region 23 of upper support structure 21 and lower branch The conformable region 23 of support structure 22 is bonded respectively with the upper top surface and bottom surface of proton exchange membrane 3, with upper support structure 21 and The seal area 24 that the bonding of lower support structure 22 is formed cooperates, and the edge of proton exchange membrane 3 is completely encapsulated in support construction 2 It is interior, realize being fully sealed to proton exchange membrane 3.In addition, in seal process, seal area 24 is with sealing element 12 against on the one hand The seal area 24 of upper support structure 21 and lower support structure 22 can be promoted to bond even closer, enhancing support construction 2 hands over proton The sealing effect of film 3 is changed, on the other hand, sealing element 12 and seal area 24 are against realizing 1 seal groove 11 of bipolar plates and support construction Sealing between 2 prevents 3 both sides gas of proton exchange membrane from mutually going here and there, enhances the sealing intensity of fuel cell, improve the peace of fuel cell Overall coefficient.Fuel cell seal assembly 100 provided by the invention need to only use sealing element 12 and support construction 2 achieve that pair The security seal of fuel cell, consumptive material is few, simple in structure, production difficulty coefficient is low, has stronger economy and practicability.It is comprehensive On, fuel cell seal assembly 100 provided by the invention is simple in structure, production difficulty coefficient is low and sealing effect is good, has very Strong economy and practicability.
Above disclosed is only the preferred embodiments of the present invention, it is impossible to the interest field of the present invention is limited with this, Therefore equivalent variations made according to the claims of the present invention belong to the scope that the present invention is covered.

Claims (9)

1. a kind of fuel cell seal assembly, described bipolar to contain bipolar plates, the sealing of the fuel cell of membrane electrode Plate is equipped with seal groove, and the membrane electrode includes proton exchange membrane, which is characterized in that including:
Sealing element, the sealing element are arranged in the seal groove;
Support construction, the support construction include upper support structure and lower support structure, one end of the upper support structure and institute State lower support structure one end be respectively formed for and the conformable region that top surface and bottom surface are bonded in the proton exchange membrane, it is described on The other end of the other end of support construction and the lower support structure bonds, formed for the sealing element against seal area.
2. fuel cell seal assembly as described in claim 1, which is characterized in that the sealing element is by dispenser described close Dispensing is formed in sealing groove.
3. fuel cell seal assembly as described in claim 1, which is characterized in that the sealing element is made of elastic material.
4. fuel cell seal assembly as described in claim 1, which is characterized in that the support construction is in Y types, the support The Y types openend of structure, which is formed, to be supplied and the conformable region that top surface and bottom surface are bonded in the proton exchange membrane, the support construction Y types closed end formed for the sealing element against seal area.
5. a kind of fuel cell, which is characterized in that including:
Fuel cell and such as claim 1-4 any one of them fuel cell seal assembly, the fuel cell Comprising bipolar plates and membrane electrode, the bipolar plates are equipped with seal groove, and the membrane electrode includes proton exchange membrane.
6. fuel cell as claimed in claim 5, which is characterized in that the membrane electrode includes proton exchange membrane, anode-catalyzed Oxidant layer, anode gas diffusion layer, cathode catalyst layer and cathode gas diffusion layer, the anode catalyst layer are located at the proton Exchange membrane the upper surface of, the anode gas diffusion layer are located at described anode catalyst layer the upper surface of, the cathode catalyst layer position Below the proton exchange membrane, the cathode gas diffusion layer is located at below the cathode catalyst layer.
7. fuel cell as claimed in claim 6, which is characterized in that the conformable region of the upper support structure is arranged at the sun Between electrode catalyst layer and the anode gas diffusion layer, the conformable region of the lower support structure is arranged at the cathod catalyst Between layer and the cathode gas diffusion layer.
8. a kind of fuel cell seal method, for sealing the fuel cell comprising bipolar plates, membrane electrode, the bipolar plates Equipped with seal groove, the membrane electrode includes proton exchange membrane, which is characterized in that including:
(1) sealing element is prepared, dispensing forms sealing element in the seal groove with dispenser;
(2) prepare support construction, the support construction include upper support structure and lower support structure, the one of the upper support structure End and one end of the lower support structure form the conformable region for being bonded with the upper top surface and bottom surface of the proton exchange membrane, institute State the other end of upper support structure and the other end of the lower support structure bond, formed for the sealing element against sealing Area;
(3) conformable region of the upper support structure is bonded with the upper top surface of the proton exchange membrane, by the lower support structure Conformable region be bonded with the bottom surface of the proton exchange membrane;
(4) two pieces of bipolar plates are born against in the both sides up and down of the seal area, completes sealing.
9. the encapsulating method of fuel cell as claimed in claim 8, which is characterized in that the membrane electrode includes proton exchange Film, anode catalyst layer, anode gas diffusion layer, cathode catalyst layer and cathode gas diffusion layer, the anode catalyst layer Positioned at described proton exchange membrane the upper surface of, the anode gas diffusion layer is located at described anode catalyst layer the upper surface of, described the moon Electrode catalyst layer is located at below the proton exchange membrane, and the cathode gas diffusion layer is located under the cathode catalyst layer Face, the step (3) include:
(1) top surface is coated with to form the anode catalyst layer in the proton exchange membrane, in the proton exchange membrane bottom surface Coating forms the cathode catalyst layer;
(2) conformable region of the upper support structure is bonded with the anode catalyst layer, by the fitting of the lower support structure Area is bonded with the cathode catalyst layer;
(3) anode gas diffusion layer is bonded with the upper support structure, by the cathode gas diffusion layer with it is described under Support construction is bonded.
CN201711495635.3A 2017-12-28 2017-12-28 Fuel cell seal assembly and encapsulating method Pending CN108054406A (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

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CN109980245A (en) * 2019-03-22 2019-07-05 苏州钧峰新能源科技有限公司 The encapsulating method of bipolar plates and membrane electrode in a kind of direct methanol fuel cell
JP2019528551A (en) * 2016-08-26 2019-10-10 バラード パワー システムズ インコーポレイテッド Fuel cell with improved durability
CN113659168A (en) * 2021-06-28 2021-11-16 东风汽车集团股份有限公司 Proton exchange membrane single cell and fuel cell
CN114068980A (en) * 2021-11-03 2022-02-18 江苏耀扬新能源科技有限公司 Single cell based on fuel cell stack process and manufacturing method thereof
CN114551927A (en) * 2021-12-21 2022-05-27 武汉众宇动力系统科技有限公司 Membrane electrode assembly for proton exchange membrane fuel cell and glue injection sealing method thereof
CN114747052A (en) * 2019-11-25 2022-07-12 赫勒电解公司 Sealing device for PEM type electrochemical cell
WO2023005102A1 (en) * 2021-07-30 2023-02-02 爱德曼氢能源装备有限公司 Sealing structure for long-life membrane electrode of fuel cell

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CN109980245B (en) * 2019-03-22 2021-10-29 苏州钧峰新能源科技有限公司 Sealing method for bipolar plate and membrane electrode in direct methanol fuel cell
CN114747052A (en) * 2019-11-25 2022-07-12 赫勒电解公司 Sealing device for PEM type electrochemical cell
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CN114068980A (en) * 2021-11-03 2022-02-18 江苏耀扬新能源科技有限公司 Single cell based on fuel cell stack process and manufacturing method thereof
CN114551927A (en) * 2021-12-21 2022-05-27 武汉众宇动力系统科技有限公司 Membrane electrode assembly for proton exchange membrane fuel cell and glue injection sealing method thereof

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Application publication date: 20180518