CN209344230U - Fuel battery double plates sealing structure - Google Patents
Fuel battery double plates sealing structure Download PDFInfo
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- CN209344230U CN209344230U CN201920088270.0U CN201920088270U CN209344230U CN 209344230 U CN209344230 U CN 209344230U CN 201920088270 U CN201920088270 U CN 201920088270U CN 209344230 U CN209344230 U CN 209344230U
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- glue
- boss
- sealing structure
- fuel battery
- battery double
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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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Abstract
The utility model relates to the technical fields of fuel cell, disclose fuel battery double plates sealing structure, fuel battery double plates sealing structure includes two boss for being separately positioned on cathode plate and anode plate sealing ring corresponding position, and the glue after solidifying with certain thickness and elastic deformation amount is coated on two boss.Fuel battery double plates sealing structure in the utility model, on anode plate and cathode plate straight forming boss and specific glue is applied to constitute sealing element, step is easy, easily operated and automation equipment precision is higher, the time cost being by hand put into sealing element in sealed groove is eliminated, the equipment cost and research and development cost of the direct injection molding silicone-rubber seals on MEA (fuel cell membrane electrode) and bipolar plates are decreased.
Description
Technical field
The utility model relates to the technical field of fuel cell more particularly to fuel battery double plates sealing structures.
Background technique
Fuel cell is a kind of by fuel (such as hydrogen, methanol) and the chemistry of oxidant (such as air, high pure air)
It can be converted into the electrochemical appliance of electric energy, wherein Proton Exchange Membrane Fuel Cells (PEM Fuel Cell) is most to be hopeful at present
One of fuel cell of industrialization.Wherein the sealing of bipolar plates is one of very important research topic of fuel cell, main at present
There are following several process routes to realize the reliable sealing of bipolar plates, is respectively as follows:
1, using automatic dispensing machine, dispensing molded sealing ring, this method disadvantage are dispensing glue in bipolar plates seal groove
Water is expensive and dispenser precision currently on the market is poor, it is difficult to which dispensing molding thickness is uniform and the consistent sealing of flatness
Adhesive tape.
2, using the separately formed silica gel sealing ring of high-accuracy liquid silicone rubber injection machine, bipolar plates sealing is directly overlayed by hand
In groove, this method can great labor intensive, production efficiency is low and is difficult to ensure that bipolar plates are fully sealed.
3, silica gel sealing ring is injection moulded directly on fuel cell core component MEA or in bipolar plates using one-step method,
The process researches and develops higher cost, higher to injector performance requirement, and need to often consider silica gel sealing ring and MEA or bipolar plates
Between bond strength it is whether enough the problems such as, to prevent because combining phenomena such as loosely falling off deformation generation.
Currently, existing domestic enterprise has introduced external bipolar plates automatic production line, wherein bipolar plates cooling water plate uses
Be that silk screen printing process is reliably sealed, however anode plate then uses other techniques to be sealed with cathode plate.Using screen printer
The advantage of gluing sealing is that bondline thickness, even width and the consistency that silk-screen obtains are preferable, can make bipolar plates progress can
By sealing, and greatly improve pile production efficiency.In addition, automatic dispensing machine technique can also be introduced into the work of gluing sealing
In skill.Screen printer and automatic dispensing machine are introduced into bipolar plates sealing and are also advantageous for opening for subsequent pile automatic production line
Hair.
As shown in Figure 1, in the prior art, groove being arranged between anode plate 2 and cathode plate 1, silica gel is placed in groove
Sealing ring 4 and membrane electrode frame 5 form sealing namely above-mentioned technique (2), there is that human cost is high, if improved
Have the shortcomings that research and development are at high cost and equipment cost is high again for above-mentioned technique (3).
Utility model content
The purpose of this utility model is to provide bipolar plate sealing mechanisms, it is intended to solve to place silica gel by hand in the prior art
The problem of sealing ring human cost is high, injection moulding silica gel sealing ring researches and develops higher cost.
The utility model is realized in this way providing fuel battery double plates sealing structure, including two are separately positioned on yin
The boss of pole plate and anode plate sealing ring corresponding position has certain thickness and elasticity after being coated with solidification on two boss
The glue of deflection.
Further, the cathode plate and the anode plate include in graphite electrode plate, metal polar plate and composite material electrode plate
One kind.
Further, the glue is heat-curable glue or ultraviolet curing glue, and compression ratio is 20% to 80% after solidification.
Further, the glue includes polyisobutene (PIB), single component liquid silica gel or has been thoroughly mixed bi-component liquid
One of state silica gel.
Further, the surface of the boss is for shiny surface, rough surface or with stupefied plane.
Compared with prior art, the fuel battery double plates sealing structure in the utility model, in anode plate and cathode plate
Upper straight forming boss constitutes sealing element, and step is easy, easily operated and automation equipment precision is higher, and eliminating by hand will be close
Sealing is put into the time cost in sealed groove, decrease the equipment of on MEA and bipolar plates direct injection molding silica gel at
Sheet and research and development cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of the sealing structure in the utility model background technique；
Fig. 2 is the schematic diagram of fuel battery double plates sealing structure provided by the embodiment of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The realization of the present embodiment is described in detail below in conjunction with specific attached drawing.
Embodiment one:
As shown in Fig. 2, providing fuel battery double plates sealing structure in the present embodiment, including two are separately positioned on cathode plate
7 and 8 sealing ring corresponding position of anode plate boss 91, be coated with glue 92 on two boss 91, which has after hardening
There is certain thickness, and there is elastic deformation amount.
91 width of boss is between 0-10mm, and highly between 0-5mm, specific design value need to be with 5 thickness of MEA frame
Size matching is to guarantee to seal after assembling.Such as former design sealed groove can be changed to having a size of width 4mm, depth 0.3mm
Boss 91 designs, and 91 width of boss is 4mm, and 91 height of boss is 0.1mm, and selecting silk-screen glue parameter is that cured glue water exists
Under 100Psi pressure compression ratio be 20%, silk-screen glue-line with a thickness of 40 μm.
Compared with groove is arranged in Fig. 1 in the prior art and is manually placed in silica gel sealing ring 4, changing groove in this implementation is boss
91, and coating glue 92.Glue 92 had both played the effect fixed with membrane electrode frame 5, while having thickness and elasticity after solidifying
Deflection has effectively formed sealing element, therefore can dispense the time cost of artificial merging silica gel sealing ring, without throwing
Enter to be injection moulded research and development, the equipment cost of silica gel sealing ring on fuel cell core component MEA or in bipolar plates.
Above-mentioned cathode plate 7 and anode plate 8 includes one of graphite electrode plate, metal polar plate and composite material electrode plate.
Glue 92 is heat-curable glue or ultraviolet curing glue, and compression ratio is 20% to 80% after solidification.
Glue 92 includes polyisobutene (PIB), single component liquid silica gel or has been thoroughly mixed in two-part liquid silica gel
It is a kind of.In other examples, the glue of other components can also be used.
According to the requirement that glue type and practical structures design, the surface of boss 91 may be designed as shiny surface, rough surface or
Person adapts to actual seal request with stupefied plane etc..
Encapsulating method is additionally provided in the present embodiment, boss 91 and coating glue 92 is processed on cathode plate 7, in sun
Corresponding position processes boss 91 and coating glue 92 on pole plate 8, and cathode plate 7 and anode plate 8 are assembled to membrane electrode frame 5 simultaneously
Fixed by glue 92, glue 92 has certain thickness and elastic deformation amount after solidifying, and constitutes sealing structure.
Encapsulating method in the present embodiment processes boss 91 and coating glue 92 on cathode plate 7 and anode plate 8,
Glue 92 had both played the effect fixed with membrane electrode frame 5, while having thickness and elastic deformation amount after solidifying, and effectively formed
Sealing element, therefore the time cost of artificial merging silica gel sealing ring can be dispensed, without being dropped in fuel cell core
Research and development, the equipment cost of silica gel sealing ring are injection moulded on component MEA or in bipolar plates.
Preferably, the adhesive for increasing by 92 binding force of glue is coated on two boss 91 in advance.Adhesive is liquid
Adhesive, such as epoxy resin.It is readily understood by, adhesive chooses whether to use according to practical pole plate material, not institute
There is the pole plate of material to require adhesive, such as silica gel and graphite electrode plate may be well combined without adhesive.
Using screen process press or automatic dispensing machine coating glue 92.It, can be according to required according to screen process press
Bondline thickness adjusts silk screen printing process parameter, such as -200 mesh of polymer silk screen or 40 mesh of stainless (steel) wire meshcount, operating pressure
0.1MPa-1.0MPa and brush coating number are 1 time, 2 times or the technological parameters such as repeatedly.In addition, can also be thick according to required glue-line
Degree is to adjust gluing process parameter, such as dispensing glue amount, Glue dripping head height and dispensing speed away from glue surface.
Silk screen printing process is also successfully used at present in the sealing of cooling water plate, this technology has been mature on the whole.Silk
It prints that technology stability is high and silk-screen bondline thickness consistency is good, therefore silk screen printing process is used in anode plate 8 and cathode plate 7
It is also very promising in sealing.Gluing process also has great advantages in this design scheme.
Embodiment two
Using machining 91 structure graphite bipolar plates of boss are carved, 91 width of boss is 4mm, and 91 height of boss is
0.1mm.The glue 92 for serving as sealing element selects polyisobutene (PIB), specific silk screen printing process parameter are as follows: screen printing net plate mesh number is
60 mesh, operating pressure 0.55MPa, gluing number are 1 time.Bondline thickness calculates about 40 μm after silk-screen.Through 120 DEG C of dry 4h
The bipolar plates with sealing element can be directly obtained afterwards.
Embodiment three
91 structure graphite bipolar plates of boss are formed using punch process, 91 width of boss is 3.6mm, and 91 height of boss is
0.1mm.The glue 92 for serving as sealing element selects uniformly mixed two-part liquid silica gel, specifically silk screen printing process parameter are as follows: silk
Printed network plate mesh number is 80 mesh, and operating pressure 0.5MPa, gluing number is 2 times.Bondline thickness calculates about 50 μm after silk-screen.
The bipolar plates with sealing element can be directly obtained after 140 DEG C of dry 30min.
Example IV
Using 91 structural metal bipolar plates of punch forming boss, 91 width of boss is 3.6mm, and 91 height of boss is
0.08mm.The glue 92 for serving as sealing element used selects uniformly mixed two-part liquid silica gel Wacker RT624 liquid
Silica gel, specifically silk screen printing process parameter are as follows: screen printing net plate mesh number is 60 mesh, and operating pressure 0.55MPa, gluing number is 2 times.
3060 glue 92 of scumbling a layer of adhesive Loctite on metal double polar plates boss 91 in advance before silk-screen, after being completely dried
Silk screen printing process operation is carried out again.Bondline thickness calculates about 70 μm after silk-screen.Band can be directly obtained after 120 DEG C of dry 30min
The metal double polar plates of sealing element.
Embodiment five
Graphite bi-polar plate is designed using punch process molding boss 91,91 width of boss is 3mm, and 91 height of boss is
0.1mm.The glue 92 for serving as sealing element selects two-part liquid silica gel, completes this sealant using bi-component automatic dispensing machine
Coating processes, specific technological parameter are as follows: dispensing rubber head diameter is 1.5mm, Glue dripping head is higher than bipolar plates seal boss 91, the two
1mm is differed, dispensing speed is 2mm/s etc..Bondline thickness calculates about 50 μm after gluing process.It can after 140 DEG C of dry 30min
Directly obtain the bipolar plates with sealing element.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (5)
1. fuel battery double plates sealing structure, which is characterized in that be separately positioned on cathode plate and anode plate sealing ring including two
The boss of corresponding position is coated with the glue after solidifying with certain thickness and elastic deformation amount on two boss.
2. fuel battery double plates sealing structure as described in claim 1, which is characterized in that the cathode plate and the anode
Plate includes one of graphite electrode plate, metal polar plate and composite material electrode plate.
3. fuel battery double plates sealing structure as described in claim 1, which is characterized in that the glue be heat-curable glue or
Ultraviolet curing glue, and compression ratio is 20% to 80% after solidification.
4. fuel battery double plates sealing structure as described in claim 1, which is characterized in that the glue includes polyisobutene
(PIB), single component liquid silica gel or one of two-part liquid silica gel has been thoroughly mixed it.
5. fuel battery double plates sealing structure as described in claim 1, which is characterized in that the surface of the boss is smooth
Face, rough surface or with stupefied plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920088270.0U CN209344230U (en) | 2019-01-21 | 2019-01-21 | Fuel battery double plates sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920088270.0U CN209344230U (en) | 2019-01-21 | 2019-01-21 | Fuel battery double plates sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN209344230U true CN209344230U (en) | 2019-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920088270.0U Active CN209344230U (en) | 2019-01-21 | 2019-01-21 | Fuel battery double plates sealing structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585876A (en) * | 2019-01-21 | 2019-04-05 | 深圳市南科燃料电池有限公司 | Fuel battery double plates sealing structure and encapsulating method |
| CN113745564A (en) * | 2021-08-10 | 2021-12-03 | 江苏骥翀氢能源科技有限公司 | Automatic paving process of fuel cell metal bipolar plate sealing glue line |
-
2019
- 2019-01-21 CN CN201920088270.0U patent/CN209344230U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585876A (en) * | 2019-01-21 | 2019-04-05 | 深圳市南科燃料电池有限公司 | Fuel battery double plates sealing structure and encapsulating method |
| CN113745564A (en) * | 2021-08-10 | 2021-12-03 | 江苏骥翀氢能源科技有限公司 | Automatic paving process of fuel cell metal bipolar plate sealing glue line |
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