CN110010923A - A kind of manufacturing method of integrated sealing pile - Google Patents
A kind of manufacturing method of integrated sealing pile Download PDFInfo
- Publication number
- CN110010923A CN110010923A CN201910257170.0A CN201910257170A CN110010923A CN 110010923 A CN110010923 A CN 110010923A CN 201910257170 A CN201910257170 A CN 201910257170A CN 110010923 A CN110010923 A CN 110010923A
- Authority
- CN
- China
- Prior art keywords
- pile
- glue
- bipolar plates
- sealing
- injecting glue
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
-
- 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
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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
-
- 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
Abstract
The invention discloses a kind of manufacturing methods for the integrated sealing pile for belonging to manufacturing technology field.This manufacturing method includes: 1) to complete the processing of bipolar plates and the processing of membrane electrode according to pile design drawing data；2) using online gluing process in situ, i.e., dispensing operation is carried out respectively in bipolar plates two sides；3) using online process for filling colloid in situ.The process route that bipolar plates provided by the invention equidistantly seal, encapsulating or dispensing encapsulate in situ, fundamentally solves technological deficiency existing for current pile assembly technology；Using dispensing in situ or injection process and equidistant plateau seal technique is used, simplifies assembly technology, the influence that the factors such as artificial, dimensional tolerance assemble pile is reduced, improves consistency, safety, durability and the production efficiency of pile.
Description
Technical field
The invention belongs to manufacturing technology field, in particular to a kind of manufacturing method of integrated sealing pile.
Background technique
Fuel cell is a kind of energy conversion device, the chemistry that will be stored in fuel and oxidant according to electrochemical principle
It can be converted into electric energy, the advantage for having generating efficiency high, low in the pollution of the environment has a wide range of applications.Due to fuel
Cell single cells output power is limited, in practical application, if needing for dry plate monocell to be stacked up as " building blocks ", in turn
Fuel cell pile is formed, and corresponding power, voltage, current needs are met with this.The fuel of fuel cell is usually hydrogen
Gas, methanol, methane, air or oxygen etc. are oxidant, wherein, fuel and oxidant cannot be contacted directly, need to be filled by sealing
It sets and separates, otherwise the safety of battery can be greatly lowered, or even have the danger of explosion.So sealing performance for fuel cell extremely
It closes important.
Traditional pile sealing means are to be placed on sealing ring in bipolar plates or apply between bipolar plates and membrane electrode
Sealant is covered, makes sealing ring Light deformation under a certain pressure, to reach sealing effect.But there are Railway Projects for this sealing:
1) general this sealing technology has first manufactured gasket with other molds, so using ex situ method forming seal pad
The gasket of forming is bonded in seal groove again with dispensing mode or other modes afterwards, and then forms sealing.As can be seen that
The technique is on the one hand complex；On the other hand, gasket is adhered to the seal groove of bipolar plates using dispensing or other modes
It is interior, the depth of seal groove is changed, assembly technology parameter has been seriously affected, the pressure that seal line is born when increasing encapsulation has
It is excessive and mechanical damage occur to be likely to result in bipolar plates stress, while also will affect Performance data；In addition, using dispensing or
Other techniques, gasket is adhered in seal groove, more demanding to dispensing or other bonding process, currently, using this method
The pile of assembly often will appear the height difference for protruding bipolar plates after gasket bonding due to cause showing for pile assembly failure
As.2) this sealing technology is used, the sealing of pile and final assembly effect are dynamic, i.e., certain in gasket deformation
In section, pile can be sealed, but final pile can be possible different, so this sealing means, on the one hand join assembly
Number requires very high, the size of assembly force, the process of press-loading process, and press fitting position etc. all has an impact to final assembly effect；
It on the other hand,, will certainly after assembling in this way since the thickness of bipolar plates, gasket, upper and lower end plank washer plate all has certain tolerance
There is the phenomenon that membrane electrode deformation is not of uniform size in pile, this directly will affect the performance and service life of pile.
Summary of the invention
The purpose of the present invention is to propose to a kind of manufacturing methods of integrated sealing pile characterized by comprising
1) according to pile design drawing data, the processing of bipolar plates and the processing of membrane electrode are completed；Wherein bipolar plates two sides
The depth bounds of seal groove are in the section 0.25-0.8mm, and two opposite sides of bipolar plates, which are respectively designed, hole for injecting glue, hole for injecting glue
It is connected to the seal groove of bipolar plates two sides, in the section 0.25-0.45mm, the material of membrane electrode protective edge is the thickness of membrane electrode protective edge
PET, PEN or PI, hardness with higher and minimum deformation ratio；
2) according to online gluing process in situ, then dispensing operation, sectional area for dispensing glue are carried out respectively in bipolar plates two sides
Less than the sectional area of seal groove, while height for dispensing glue protrudes bipolar plates 0.05-0.2mm, then will put the bipolar plates of glue with
Membrane electrode stacks up one by one according to pile assembly technology, on the assembly bench of pile, applies certain pressure to pile
Or torsion, pile thickness do not change, then show that protective edge is bonded with bipolar plates perfection, it is close to realize equidistant stable state
Envelope, finally, be heating and curing to glue spontaneous curing or by whole be stacked under certain temperature environment, i.e., the assembly of completion pile with it is close
Envelope；
3) according to online process for filling colloid in situ, then first by bipolar plates and membrane electrode according to pile assembly technology one by one
It stacks up, on pile assembly bench, applies certain pressure or torsion to pile, pile thickness of being subject to does not change；
Then show that protective edge is bonded with bipolar plates perfection, realizes equidistant sealing；Then pile is placed according to certain orientation,
Guarantee two hole for injecting glue one in pile bipolar plates at upper one under, from following hole for injecting glue toward injecting glue inside bipolar plates,
Glue can gradually be full of the both sides sealing slot of entire bipolar plates, and flow out from hole for injecting glue above, and glue outflow to be had then shows to infuse
Glue is abundant, can stop injecting glue；Then two hole for injecting glue are blocked, pile is placed under natural environment or the environment of certain temperature
Lower solidification, completion to be solidified realize the assembly and sealing of pile.
It is described pile is applied certain pressure or torsion i.e. assembly force of pile be according to pile size or structure not
Together, not of uniform size, the pressure range being applied on membrane electrode is 0.1-2MPa.；
The glue for dispensing glue is silicone glue, ethylene-propylene diene copolymer or polyolefin glue.
The glue of the injecting glue is silicone glue or perfluor silica gel.
The technique that beneficial effects of the present invention bipolar plates provided by the invention equidistantly seal, encapsulating or dispensing encapsulate in situ
Route fundamentally solves technological deficiency existing for current pile assembly technology；Using dispensing in situ or injection process and use
Equidistant plateau seal technique, simplifies assembly technology, reduces the influence that the factors such as artificial, dimensional tolerance assemble pile,
Improve consistency, safety, durability and the production efficiency of pile.First feature of the invention is to utilize membrane electrode protective edge
Thickness determine the thickness after the assembly of final membrane electrode, since the deformation ratio of protective edge is minimum, so, in pile assembling process
In, as long as protective edge is bonded completely with bipolar plates, no matter pile assembly force does great adjustment variation, membrane electrode deformation is all kept not
Become；Dynamic sealing technique before equidistant plateau seal technique is changed to, because of dimensional tolerance or electricity before thoroughly solving
Changing a little for heap assembly parameter and cause pile failure or the poor problem of pile consistency.Second feature is envelope in situ
Dress simplifies encapsulation process, reduces uncertain factor, improve assembly yield and efficiency.
Specific embodiment
The present invention proposes a kind of manufacturing method of integrated sealing pile, comprising: 1) complete according to pile design drawing data
At the processing of bipolar plates and the processing of membrane electrode；2) it using online gluing process in situ, i.e., is carried out respectively a little in bipolar plates two sides
Glue operation；3) using online process for filling colloid in situ, then first bipolar plates and membrane electrode are folded one by one according to pile assembly technology
It adds up, on pile assembly bench, applies certain pressure or torsion to pile, pile thickness of being subject to does not change.Under
Face is in conjunction with the embodiments explained the present invention.
Embodiment 1 manufactures 20kw galvanic pile module
1) according to layout design, a 20kw pile is produced, which seals groove width 4mm, groove depth point
Not Wei 0.5mm and 0.3mm, membrane electrode effective area 230cm2, membrane electrode protective edge material be 0.125mm thickness PET material, encapsulate
Membrane electrode protective edge afterwards is with a thickness of 0.25mm.
2) using accurate online dispenser, dispensing operation is carried out on the anode and cathode seal groove of bipolar plates respectively, is used
Glue be polyolefin glue, cathode width 3mm for dispensing glue, height 0.6mm, anode width 3mm for dispensing glue, height 0.4mm.
3) assembly 20kw pile needs 136 monocells, and 136 bipolar plates are intersected with membrane electrode according to sandwich structure
It stacks up, and applies the pressure of about 1500kg, the thickness of pile is no longer changed at this time.
4) it with screw rod or ties up steel band and tightens up pile, complete the assembly of pile, pile is then placed in 50 DEG C
In the environment of toast 6h, be finally completed the sealing of pile.
Embodiment 2 manufactures 36kw galvanic pile module
1) according to layout design, a 36kw galvanic pile module is produced, the pile bipolar plates anode and cathode seal groove is wide
3.5mm, groove depth are 0.4mm, and membrane electrode effective area 330cm2, membrane electrode protective edge material is the PEN material of 0.15mm thickness, envelope
Membrane electrode protective edge after dress is with a thickness of 0.3mm.The size of bipolar plates is 340*150mm, in the middle of bipolar plates two sides short side
The respectively duct of one 0.8mm of processing, which is connected to the seal groove of anode and cathode respectively.
2) assembly 36kw pile needs 170 monocells, and 170 bipolar plates are intersected with membrane electrode according to sandwich structure
It stacks up, and applies the pressure of about 2100kg, the thickness of pile is no longer changed at this time.
3) it with screw rod or ties up steel band and tightens up pile, then pile side is put, guarantees hole for injecting glue respectively upper and lower
Both ends.Then using accurate glue filling device, two-component perfluor silica gel is gradually injected anode and cathode sealing by the duct of 0.8mm
Slot can inject piecewise, or using linking pipeline, arrange series connection injection, the injecting glue duct of upside is located to glue outflow, then table
Bright injecting glue is completed, and is then blocked two Kong Jun in each bipolar plates with patch.
3) pile is placed under natural environment and is solidified for 24 hours, that is, complete the assembly and sealing of pile.
Claims (4)
1. a kind of manufacturing method of integrated sealing pile characterized by comprising
1) according to pile design drawing data, the processing of bipolar plates and the processing of membrane electrode are completed；Wherein bipolar plates both sides sealing
For the depth bounds of slot in the section 0.25-0.8mm, two opposite sides of bipolar plates, which are respectively designed, hole for injecting glue, hole for injecting glue and double
The seal grooves of pole plate two sides is connected to, the thickness of membrane electrode protective edge in the section 0.25-0.45mm, the material of membrane electrode protective edge be PET,
PEN or PI, hardness with higher and minimum deformation ratio；
2) according to online gluing process in situ, then dispensing operation is carried out respectively in bipolar plates two sides, sectional area for dispensing glue is less than
The sectional area of seal groove, while height for dispensing glue protrudes bipolar plates 0.05-0.2mm, then will put the bipolar plates and film electricity of glue
Pole stacks up one by one according to pile assembly technology, on the assembly bench of pile, applies certain pressure or torsion to pile
Power, pile thickness do not change, then show that protective edge is bonded with bipolar plates perfection, realize equidistant plateau seal, most
Afterwards, it is heating and curing to glue spontaneous curing or by whole be stacked under certain temperature environment, i.e. the assembly of completion pile and sealing；
3) according to online process for filling colloid in situ, then first bipolar plates are superimposed with membrane electrode according to pile assembly technology one by one
Get up, on pile assembly bench, applies certain pressure or torsion to pile, pile thickness of being subject to does not change；Then table
Bright protective edge is bonded with bipolar plates perfection, realizes equidistant sealing；Then pile is placed according to certain orientation, is guaranteed
Two hole for injecting glue one in pile bipolar plates at upper one under, from following hole for injecting glue toward bipolar plates inside injecting glue, glue meeting
It is gradually full of the both sides sealing slot of entire bipolar plates, and is flowed out from hole for injecting glue above, glue outflow to be had then shows that injecting glue fills
Point, injecting glue can be stopped；Then two hole for injecting glue are blocked, pile is placed under natural environment or consolidated in the environment of certain temperature
Change, completion to be solidified realizes the assembly and sealing of pile.
2. a kind of manufacturing method of integrated sealing pile according to claim 1, which is characterized in that described to apply to pile
Certain pressure or torsion, that is, pile assembly force is the difference according to pile size or structure, not of uniform size, is applied to film electricity
Pressure range on extremely is 0.1-2MPa..
3. a kind of manufacturing method of integrated sealing pile according to claim 1, which is characterized in that the glue for dispensing glue is
Silicone glue, ethylene-propylene diene copolymer or polyolefin glue.
4. a kind of manufacturing method of integrated sealing pile according to claim 1, which is characterized in that the glue of the injecting glue is
Silicone glue or perfluor silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910257170.0A CN110010923B (en) | 2019-04-01 | 2019-04-01 | Manufacturing method of integrated sealed galvanic pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910257170.0A CN110010923B (en) | 2019-04-01 | 2019-04-01 | Manufacturing method of integrated sealed galvanic pile |
Publications (2)
| Publication Number | Publication Date |
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| CN110010923A true CN110010923A (en) | 2019-07-12 |
| CN110010923B CN110010923B (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910257170.0A Active CN110010923B (en) | 2019-04-01 | 2019-04-01 | Manufacturing method of integrated sealed galvanic pile |
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| CN (1) | CN110010923B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540495A (en) * | 2021-07-09 | 2021-10-22 | 刘学军 | Flow frame structure of flow battery and side surface packaging method thereof |
| CN114447357A (en) * | 2022-01-17 | 2022-05-06 | 国家电投集团氢能科技发展有限公司 | Metal bipolar plate and metal bipolar plate sealing structure forming method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113540495A (en) * | 2021-07-09 | 2021-10-22 | 刘学军 | Flow frame structure of flow battery and side surface packaging method thereof |
| CN114447357A (en) * | 2022-01-17 | 2022-05-06 | 国家电投集团氢能科技发展有限公司 | Metal bipolar plate and metal bipolar plate sealing structure forming method |
| CN114447357B (en) * | 2022-01-17 | 2024-04-30 | 国家电投集团氢能科技发展有限公司 | Forming method of metal bipolar plate and metal bipolar plate sealing structure |
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|---|---|
| CN110010923B (en) | 2021-06-25 |
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