CN110416571A - Fuel cell pile structure - Google Patents
Fuel cell pile structure Download PDFInfo
- Publication number
- CN110416571A CN110416571A CN201910645290.8A CN201910645290A CN110416571A CN 110416571 A CN110416571 A CN 110416571A CN 201910645290 A CN201910645290 A CN 201910645290A CN 110416571 A CN110416571 A CN 110416571A
- Authority
- CN
- China
- Prior art keywords
- locating slot
- fuel cell
- cell pile
- seal member
- mea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a kind of fuel cell pile structures, including cathode end plate, bipolar plates, MEA component and anode end plate, wherein, the side of MEA module frame towards anode-side is fixed with the first seal member, the side of MEA module frame towards cathode side is fixed with the second seal member, first seal member is adapted to press sealing with anode-side seal groove, and the second seal member is adapted to press sealing with cathode side seal groove.Fuel cell pile structure proposed by the present invention can effectively promote the packaging efficiency and sealing stability of fuel cell.
Description
Technical field
The present invention relates to fuel cell structure technical field more particularly to a kind of fuel cell pile structures.
Background technique
Fuel cell is a kind of chemical generated device that chemical energy can be converted to electric energy, is after hydroelectric generation, thermal energy
The 4th kind of generation technology after power generation and nuclear electric power generation.Since fuel cell is the chemistry by electrochemical reaction fuel
Gibbs free energy part in energy is converted into electric energy, is not limited by Carnot cycle effect, high-efficient.In addition, fuel cell
Use fuel and oxygen as raw material, without mechanical transmission component, no noxious gas emission or discharge amount are few, and do not have noise.
As a result, from the perspective of the energy and ecological environment, fuel cell will be most promising generation technology, and application field is wide
It is general.
In conventional fuel cell pile packaging technology, need that seal washer is covered to bipolar plates two sides one by one in advance
Seal groove in, packaging efficiency is low, meanwhile, seal washer be easy dislocation cause leakproofness bad problem.In addition, traditional fuel
In battery stack packaging technology, for being deposited between the bolt for the pile that is locked and the frame (i.e. the frames of bipolar plates) of monocell
Insulating protection is carried out to clamping screw in a certain distance, and using leather sheath, to prevent bolt from contacting generation short circuit with monocell,
Although the structure effectively carries out pile, insulation is anti-, and there are a certain distance with each monocell frame for bolt, increase pile
Volume, and then affect the overall power density of pile.
Summary of the invention
The main purpose of the present invention is to provide a kind of fuel cell pile structures, it is intended to effectively promote the group of fuel cell
Fill efficiency and sealing stability.
To achieve the above object, the present invention provides a kind of fuel cell pile structure, including cathode end plate, bipolar plates, MEA
(membrane electrode assembly, membrane electrode) component and anode end plate, wherein
The side of frame towards the anode-side of the MEA component is fixed with the first seal member, and the frame of MEA component is towards cathode
The side of side is fixed with the second seal member, and the first seal member is adapted to press sealing, the second sealing with anode-side seal groove
Component is adapted to press sealing with cathode side seal groove.
Preferably, the frame of the MEA component is equipped with multiple first locating slots, is provided in bipolar plates and the first positioning
Slot one-to-one second locating slot is equipped on anode end plate and cathode end plate and positions correspondingly with the first locating slot
Hole, bolt pass through location hole, the first locating slot and the second locating slot and fix fuel cell pile.
Preferably, the outer rim of first locating slot is tilted towards anode-side or cathode side to form the first locating slot skirt and encloses,
Second locating slot is nested in the first locating slot skirt and places.
Preferably, first locating slot and the second locating slot are arc-shaped slot, and it is arc-shaped that the first locating slot skirt, which encloses,
Curved surface, the radius of the second locating slot are greater than the radius for the arc-shaped surface that the first locating slot skirt encloses.
Preferably, what the first locating slot skirt enclosed upwarps the thickness that height is less than bipolar plates；The first locating slot skirt
Enclose with a thickness of 0.2 ~ 1 mm.
Preferably, the first all locating slots is respectively positioned on the outside of the frame in MEA length component direction；The second all positioning
Slot is respectively positioned on the outside of the frame of bipolar plates length direction.
Preferably, the outer peripheral spacing of the outer edge of the location hole and its end plate is less than 5mm.
Preferably, first seal member and the second seal member are the sealing strip being fixed on MEA module frame
The ring structure encompassed, the width of sealing strip are 1 ~ 2mm, are highly 0.7 ~ 1.5mm；Anode-side seal groove and cathode side are close
The width of sealing groove is 2 ~ 3mm, is highly 0.4 ~ 0.8 mm.
Preferably, first seal member, the second seal member include have incompressible deformation performance first close
Closure material layer and the second sealing material layer with high temperature resistance, the first sealing material layer and the second sealing material layer are changed each other
Learn crosslinking.
Preferably, first sealing material layer is located at the outside of the frame of MEA component, and the second sealing material layer is located at
The inside of the frame of MEA component.
Fuel cell pile structure proposed by the present invention, has the advantages that
1) by the way that (i.e. unitary design) is fixed in the frame of MEA component and seal member, bipolar plates and MEA be can be realized
Component quickly stacks assembling, saves and needs in advance to cover seal washer one by one in conventional fuel cell pile packaging technology
It covers in the seal groove of bipolar plates two sides, can effectively promote the packaging efficiency of fuel cell pile；
2) by the way that MEA component and seal member are carried out unitary design, conventional fuel cell pile can effectively be avoided to assemble work
The problem that seal washer dislocation causes pile leakproofness bad in skill.In addition, seal member of the invention, which uses, has resistance to compression
Compression deformation performance and have high temperature resistance composite seal, be able to ascend the incompressible deformation performance and Nai Gao of seal member
Warm nature energy further promotes the sealing performance and its stability of fuel cell pile；
3) knot for being directly locked using the circular positioning slot of bipolar plates and MEA component, while being enclosed using curved surface skirt
Structure carries out barrier insulation, can effectively reduce pile chemically non-reactive region/chemically non-reactive part dimension, increases fuel cell
The power density of pile.In addition, the present invention carries out the scheme of barrier insulation using the first locating slot skirt closed structure, compared with traditional fuel
Battery stack assembles scheme in such a way that leather sheath carries out insulating protection to clamping screw, and insulating protection effect grade stability is more
It is good.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fuel cell pile structure of the present invention；
Fig. 2 is the structural schematic diagram of bipolar plates in fuel cell pile structure of the present invention；
Fig. 3 is the structural schematic diagram of MEA component in fuel cell pile structure of the present invention.
In figure, 1- bipolar plates, 11- anode flow field veneer, the second locating slot of 10-, 12- cathode flow field veneer, 2-MEA group
Part, the first seal member of 21-, the first locating slot of 20-, 31- anode end plate, 32- cathode end plate.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
It should be noted that in the description of the present invention, term " transverse direction ", " longitudinal direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, and is not the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, term " first ", " second " etc. are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Referring to figs. 1 to Fig. 3, in this preferred embodiment, a kind of fuel cell pile structure, including cathode end plate 32, cathode
Flow field veneer 12, MEA component 2, bipolar plates 1(Yin/Yang the two poles of the earth flow-field plate), MEA component 2, bipolar plates 1(Yin/Yang the two poles of the earth flow field
Plate), MEA component 2, be illustrated with three pieces monocell pile in anode flow field veneer 11 and anode end plate 31(the present embodiment,
There are three MEA components 2 at this time, if only one MEA component of a piece of monocell, Yin/Yang pole flow field veneer belongs to bipolar plates, area
It is not that the bipolar plates two sides among pile are Yin/Yang the two poles of the earth flow-field plate respectively, and two sides only need cathode or anode flow field list
Plate), wherein
The side of the frame of MEA component 2 towards bipolar plates anode-side is fixed with the first seal member 21, the frame court of MEA component 2
The second seal member (not shown), the first seal member 21 and anode side seal are fixed with to the side of bipolar plates cathode side
To press sealing, the second seal member is adapted to cathode side seal groove to press sealing slot adaptation.
Due to the first seal member 21 and the second seal member be be fixed on MEA component 2 frame on (i.e. integral type is set
Meter), therefore can be realized bipolar plates 1(anode flow field veneer 11, cathode flow field veneer 12) quickly folded with MEA component 2
Assembling is put, saves and needs that seal washer is covered to 1 two sides of bipolar plates one by one in advance in conventional fuel cell packaging technology
Seal groove in, can effectively promote the packaging efficiency of fuel cell pile.Simultaneously as the first seal member 21 and second
Seal member be with 2 unitary design of MEA component, can effectively avoid in conventional fuel cell packaging technology seal washer dislocation from leading
Send a telegraph the bad problem of heap leakproofness.
Further, referring to Fig. 3, the frame of MEA component 2 is equipped with multiple first locating slots 20, referring to Fig. 2, bipolar plates 1
On be provided with one-to-one multiple second locating slots 10 of the first locating slot 20, be all provided in anode end plate 31 and cathode end plate 32
Have and passes through location hole, the first locating slot 20 and the second locating slot with the one-to-one multiple location holes of the first locating slot 20, bolt
10 fix fuel cell pile.Second locating slot 10 is identical with the shape of the first locating slot 20.
Further, the outer rim of the first locating slot 20 is tilted towards anode-side or cathode side to form the first locating slot skirt and encloses,
Second locating slot 10 is nested in the first locating slot skirt and places.The first locating slot skirt is nested in by the second locating slot 10 to place, from
And it ensure that being fastenedly connected for MEA component 2 and bipolar plates 1.
In the present embodiment, the first locating slot 20 and the second locating slot 10 are arc-shaped slot, and the first locating slot skirt encloses for circle
Arc-shaped curved surface, the radius of the second locating slot 10 are greater than the radius for the arc-shaped surface that the first locating slot skirt encloses.First locating slot skirt
The thickness for upwarping height and being less than bipolar plates 1 enclosed；First locating slot skirt enclose with a thickness of 0.2 ~ 1 mm.
Specifically, the first all locating slots 20 is respectively positioned on the outside of the frame of 2 length direction of MEA component；All second
Locating slot 10 is respectively positioned on the outside of the frame of 1 length direction of bipolar plates.The outer edge of location hole and the outer peripheral spacing of its end plate
Less than 5mm.The present embodiment is illustrated for eight the first locating slots 20 and the second locating slot 10 is arranged.On the frame of MEA component 2
Four the first locating slots 20 are respectively arranged in lower both ends.
First seal member 21 and the second seal member are that the sealing strip being fixed on 2 frame of MEA component encompasses
Ring structure, the width of sealing strip are 1 ~ 2mm, are highly 0.7 ~ 1.5mm；The width of anode-side seal groove and cathode side seal groove
Degree is 2 ~ 3mm, is highly 0.4 ~ 0.8 mm.When assembling fuel cell pile, enable to the first seal member 21 can
Easily be engaged in the seal groove of 1 anode-side of bipolar plates, at the same the second seal member can easily be engaged to it is bipolar
In the seal groove of 1 cathode side of plate.In addition, the small size due to 2 frame of MEA component, 1 yin-yang both sides sealing region of bipolar plates designs
Scheme can fully ensure that the area of the conversion zone of 2 membrane electrode of MEA component and 1 yin-yang of bipolar plates, two side flow field plates.
First seal member 21 and the second seal member include first sealing material layer with incompressible deformation performance
With the second sealing material layer with high temperature resistance, the first sealing material layer and the crosslinking of the second sealing material layer mutual chemical.
It is to promote the first seal member 21, second using the purpose of incompressible deformation performance and high temperature resistance composite seal layer
The incompressible deformation performance and high temperature resistance of seal member.
First sealing material layer is located at the outside of the frame of MEA component 2, and the second sealing material layer is located at the side of MEA component 2
The inside of frame.First sealing material layer is located to the outside of the frame of MEA component 2, the second sealing material layer is located at MEA component 2
Frame inside, it is therefore intended that promote the first seal member 21, the high temperature resistance on the inside of the second seal member and outside
Incompressible deformation performance further promotes the sealing performance and its stability of fuel cell pile.
First sealing material layer is by silicone resin, Ethylene-Propylene-Diene-monomer rubber, fluoroelastomer, nitrile rubber, poly-
Tetrafluoroethene, polysulfones, polyetherimide, polyphenylene sulfide, polyether-ether-ketone, polyimides, polyethylene terephthalate, poly- naphthalene
Naphthalate, high density polyethylene (HDPE), polyurethane, neoprene, acetal, nylon, polybutylene terephthalate (PBT),
At least one of acrylonitrile-butadiene rubber material is prepared, and compression ratio is 60% ~ 80% after molding；Second sealing
Material layer is prepared by heat-curable glue or ultraviolet curing glue, and compression ratio is 20% to 80% after solidification.
When assembling fuel cell pile, by 1 piece of 31,1 pieces of anode end plate, 32,1 pieces of cathode end plate anode flow field veneer 11,1
12,2 pieces of bipolar plates 1 and 3 piece MEA components 2 of block cathode flow field veneer carry out stacking assembling in order, are determined with eight bolts
Position, since the second locating slot 1010 of bipolar plates 1, anode flow field veneer 11, cathode flow field veneer 12 is to be nested in the first positioning
The periphery that slot skirt encloses, and bolt be merely able to enclose with the first locating slot skirt in enclose and contact, thus the first locating slot skirt is enclosed and can be risen
To the purpose of barrier insulation, then yin-yang the two poles of the earth end plate is locked by eight bolts, completes pile assembling.The present embodiment
The knot for being directly locked using the circular positioning slot of bipolar plates and MEA component 2, while being enclosed using the first locating slot skirt
Structure carries out barrier insulation, can effectively reduce pile chemically non-reactive region/chemically non-reactive part dimension, increases fuel cell
The power density of pile.In addition, the scheme of barrier insulation is carried out by using the first locating slot skirt closed structure, compared with traditional fuel electricity
Pond pile assembles scheme in such a way that leather sheath carries out insulating protection to clamping screw, and insulating protection effect grade stability is more preferably.
Fuel cell pile structure proposed by the present invention, has the advantages that
1) by the way that (i.e. unitary design) is fixed in 2 frame of MEA component and seal member, bipolar plates 1 and MEA be can be realized
Component 2 quickly stack assembling, save needed in conventional fuel cell pile packaging technology in advance by seal washer one by one
It covers in the seal groove of 1 two sides of bipolar plates, can effectively promote the packaging efficiency of fuel cell pile；
2) by the way that MEA component 2 and seal member are carried out unitary design, conventional fuel cell pile can effectively be avoided to assemble work
The problem that seal washer dislocation causes pile leakproofness bad in skill.In addition, seal member of the invention, which uses, has resistance to compression
Compression deformation performance and have high temperature resistance composite seal, be able to ascend the incompressible deformation performance and Nai Gao of seal member
Warm nature energy further promotes the sealing performance and its stability of fuel cell pile；
3) it is directly locked using the circular positioning slot of bipolar plates 1 and MEA component 2, while being enclosed using curved surface skirt
Structure carries out barrier insulation, can effectively reduce pile chemically non-reactive region/chemically non-reactive part dimension, increases fuel electricity
The power density of pond pile.In addition, the present invention carries out the scheme of barrier insulation, more traditional combustion using the first locating slot skirt closed structure
Battery stack assembling scheme is expected in such a way that leather sheath carries out insulating protection to clamping screw, and insulating protection effect grade stability is more
It is good.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure transformation made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (10)
1. a kind of fuel cell pile structure, which is characterized in that including cathode end plate, bipolar plates, MEA component and anode tap
Plate, wherein
The side of frame towards the bipolar plates anode-side of the MEA component is fixed with the first seal member, the frame court of MEA component
It is fixed with the second seal member to the side of bipolar plates cathode side, the first seal member is adapted to close to press with anode-side seal groove
Envelope, the second seal member are adapted to press sealing with cathode side seal groove.
2. fuel cell pile structure as described in claim 1, which is characterized in that the frame of the MEA component is equipped with more
A first locating slot is provided with and one-to-one second locating slot of the first locating slot, anode end plate and cathode terminal in bipolar plates
It is equipped on plate and passes through location hole, the first locating slot and the second locating slot with the one-to-one location hole of the first locating slot, bolt
Fuel cell pile is fixed.
3. fuel cell pile structure as claimed in claim 2, which is characterized in that the outer rim direction sun of first locating slot
Pole side or cathode side, which tilt, to be formed the first locating slot skirt and encloses, and the second locating slot is nested in the first locating slot skirt and places.
4. fuel cell pile structure as claimed in claim 3, which is characterized in that first locating slot and the second locating slot
It is arc-shaped slot, the first locating slot skirt encloses for arc-shaped surface, and the radius of the second locating slot is greater than what the first locating slot skirt enclosed
The radius of arc-shaped surface.
5. fuel cell pile structure as claimed in claim 3, which is characterized in that the first locating slot skirt enclosed upwarps height
Degree is less than the thickness of bipolar plates；The first locating slot skirt enclose with a thickness of 0.2 ~ 1 mm.
6. fuel cell pile structure as claimed in claim 2, which is characterized in that all first is fixed) plate length direction
On the outside of frame.
7. fuel cell pile structure as claimed in claim 2, which is characterized in that the outer edge of the location hole and its end plate
Outer peripheral spacing be less than 5mm.
8. the fuel cell pile structure as described in any one of claim 2 to 7, which is characterized in that first sealing
Component and the second seal member are the ring structure that the sealing strip being fixed on MEA module frame encompasses, sealing strip
Width is 1 ~ 2mm, is highly 0.7 ~ 1.5mm；The width of anode-side seal groove and cathode side seal groove be 2 ~ 3mm, height
For 0.4 ~ 0.8 mm.
9. fuel cell pile structure as claimed in claim 8, which is characterized in that first seal member, the second sealing
Component includes first sealing material layer with incompressible deformation performance and the second sealing material layer with high temperature resistance,
First sealing material layer and the crosslinking of the second sealing material layer mutual chemical.
10. fuel cell pile structure as claimed in claim 9, which is characterized in that first sealing material layer is located at MEA
The outside of the frame of component, the second sealing material layer are located at the inside of the frame of MEA component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645290.8A CN110416571A (en) | 2019-07-17 | 2019-07-17 | Fuel cell pile structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910645290.8A CN110416571A (en) | 2019-07-17 | 2019-07-17 | Fuel cell pile structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110416571A true CN110416571A (en) | 2019-11-05 |
Family
ID=68361774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910645290.8A Pending CN110416571A (en) | 2019-07-17 | 2019-07-17 | Fuel cell pile structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110416571A (en) |
Cited By (4)
| 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 |
| CN113385372A (en) * | 2021-06-11 | 2021-09-14 | 广州市黄埔乐天实业有限公司 | Integrated glue injection machine, glue injection equipment and glue injection molding process for fuel cell sealing ring |
| CN113385371A (en) * | 2021-06-11 | 2021-09-14 | 广州市黄埔乐天实业有限公司 | Fuel cell sealing ring glue injection machine, glue injection equipment and glue injection molding process |
| CN114142058A (en) * | 2021-11-25 | 2022-03-04 | 同济大学 | Fuel cell membrane electrode sealing frame |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113385372A (en) * | 2021-06-11 | 2021-09-14 | 广州市黄埔乐天实业有限公司 | Integrated glue injection machine, glue injection equipment and glue injection molding process for fuel cell sealing ring |
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| CN114142058A (en) * | 2021-11-25 | 2022-03-04 | 同济大学 | Fuel cell membrane electrode sealing frame |
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