CN208986097U - The bonding slot structure of fuel battery double plates - Google Patents
The bonding slot structure of fuel battery double plates Download PDFInfo
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- CN208986097U CN208986097U CN201821872407.3U CN201821872407U CN208986097U CN 208986097 U CN208986097 U CN 208986097U CN 201821872407 U CN201821872407 U CN 201821872407U CN 208986097 U CN208986097 U CN 208986097U
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- slot
- bonding
- adhesive
- 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 a kind of bonding slot structures of fuel battery double plates, the bipolar plates are equipped with diversion trench, fluid inlet and outlet and adhesive slot, adhesive glue is equipped in adhesive slot, the adhesive slot surrounding is provided with a plurality of air discharge duct, each air discharge duct connection adhesive slot and the diversion trench beside it, or fluid import and export or pole plate outer edge.Compared with prior art, the bipolar plates of the utility model structure have many advantages, such as good air-tightness, electrical and thermal conductivity, gas barrier property and mechanical strength.
Description
Technical field
The utility model relates to a kind of fuel battery double plates, more particularly, to a kind of adhesive slot of fuel battery double plates
Structure.
Background technique
Fuel cell is usually made of multiple battery units, and each battery unit includes two electrodes (anode and cathode),
Two electrodes are separated by electrolyte element, and are assembled in series with each other, and fuel cell pack is formed.By being supplied to each electrode
To reactant appropriate, i.e. another supply oxidant to electrode supply fuel realizes electrochemical reaction, thus in electricity
Potential difference is formed between pole, and is therefore produced electricl energy.
Proton Exchange Membrane Fuel Cells core component mainly includes membrane electrode and pole plate.Membrane electrode is gentle by proton exchange membrane
Body diffused layer, catalyst composition, membrane electrode two sides are then pole plates, and the electronics that electrochemical reaction generates can be led to by pole plate
External circuit.The deflector hole and diversion trench of plate provide hydrogen fuel, and it is oxidant that cathode plate, which then provides air,.In anode
Hydrogen is reacted through catalysis generates hydrogen cation (proton), and proton exchange membrane helps hydrogen cation to move to cathode.In cathode air
In oxygen obtain electronically forming anion through catalysis reaction, react generation water with the hydrogen cation that comes of migration.
The electrochemical reaction occurred in a fuel cell can be indicated with reaction equation below:
Anode reaction: 2H2→4H++4e
Cathode reaction: O2+4H++4e→2H2O
In entire electrochemical reaction, the electric current that pole plate is drawn is exactly the power generation result of fuel cell.Multiple battery cells
Series connection as needed, forms the battery pack (pile) of different capacity.In battery pack, bipolar plates overlapped in series.One briquette fuel electricity
Pond bipolar plates are bonded by one piece of cathode veneer and one piece of anode veneer, and intennediate bond forms coolant flow channel, fuel (hydrogen)
With the outside for being located at two pieces of pole plates if oxidant (such as air) diversion trench.This requires the gas that bipolar plates need to have certain
Close property can be isolated the fuel, oxidant, coolant liquid three for participating in reaction and separate.So in the manufacturing process of bipolar plates,
The bonding of yin, yang veneer is just particularly important.
Usually when bonding bipolar plates, especially when biggish plane on some pole plates is pasted, because viscose glue preparation stirring is mixed
Inevitably contain a certain amount of bubble when conjunction, and also there are a small amount of entraining air bubbles into adhesive slot when the bonding of yin, yang veneer, causes
When later period bipolar plates bond colloid solidification, bubble squeezes viscose glue and it is made to overflow adhesive slot, and adhesive slot is not completely filled,
Porous non-hermetic type chamber is formed in adhesive slot, is seriously affected the air-tightness of coolant flow field, is influenced fuel cell power generation performance.
Utility model content
The purpose of this utility model is exactly to provide a kind of with good to overcome the problems of the above-mentioned prior art
Air-tightness, electrical and thermal conductivity, gas barrier property and mechanical strength fuel battery double plates bonding slot structure.
The purpose of this utility model can be achieved through the following technical solutions: a kind of adhesive slot of fuel battery double plates
Structure, the bipolar plates are equipped with diversion trench, fluid import and export and adhesive slot, are equipped with continuous adhesive glue in adhesive slot,
It being characterized in that, the adhesive slot surrounding is provided with a plurality of air discharge duct, each air discharge duct connection adhesive slot and the diversion trench beside it, or
Fluid import and export or pole plate outer edge.
The adhesive slot is shallow and wide type adhesive slot, width are as follows: 5~10mm, depth are as follows: 0.05~0.1mm.Several
Air discharge duct is evenly distributed on the two sides of adhesive slot, so that adhesive slot is connected with the coolant flow channel of pole plate outer edge and most two sides.
The air discharge duct is shallow narrow air discharge duct, depth are as follows: 0.02~0.08mm, width are as follows: 0.2~1.0mm.Tool
The volume appropriate adjustment of stereoscopic pole plate adhesive slot.
The adhesive slot surrounding is uniformly provided with perpendicular a plurality of air discharge duct.
The bipolar plates bond by the following method: uniformly coating is continuous in adhesive slot bonds adhesive tape, adhesive glue
The width of item is less than adhesive slot, and thickness is greater than bonding groove depth, and bipolar plates press on press, and bonding adhesive tape is evenly laid out in viscous
It closes in slot, bonding a small amount of gas carried secretly when bubble and two boards in adhesive tape press can be along air discharge duct before viscose glue solidification
Be discharged adhesive slot, viscose glue solidification after two pieces of cathode and anode unipolar plates be sticked together, and between be zero clearance, completely attach to.
At 100 DEG C~180 DEG C, pressure controls the pressing time 0.5 at 0.2~0.3MPa for the press temperature control
~1.0H, the bipolar plates after adhering and solidifying is further taken out after natural cooling prevent rapid cooling from causing the warpage of bipolar plates, uneven
It is whole.
Before pressing, adhesive tape is continuously bonded by way of manual or use dispenser or use silk-screen printing coated in viscous
It closes in slot.
The size of bonding adhesive tape meets in the adhesive slot, and adhesive glue is filled up completely full adhesive slot after pressing, and will not
It is spilled over to pole plate outer edge or blocking inside diversion trench.
The bonding adhesive tape can select cheap and good bond effect adhesive, such as epoxy glue, conductive carbon paste or silicon
Glue etc. can replace expensive conductive silver glue completely.
Cathode veneer or anode veneer made from the method that the bipolar plates take machine to carve or be pressed and molded, or take metal
The front of cathode veneer or anode veneer made from the stamped molding mode of plate, the cathode veneer or anode veneer is to lead sky
Airslide or hydrogen flow guiding slot, reverse side are to lead cooling launder or are smooth surface, and cooling launder or light are being led in the adhesive slot setting
Surface side.Bipolar plates after the bonding, cathode veneer and anode loose side completely attach to, and zero clearance does not influence bipolar plates
Good thermal conductivity, air-tightness and mechanical strength.
The utility model is to enter to overcome above-mentioned existing bipolar plates to bond existing defect from the structure of pole plate adhesive slot
Hand increases the degassing function of adhesive slot, that is, in the shallow and wide type adhesive slot of pole plate, increases suitable air discharge duct, so that yin,
The bubble in adhesive slot can be effectively discharged in anode plate when bonding, while improving bipolar plates adhesion reliability, effectively control
The cost of manufacture of bipolar plates and a kind of design of fuel cell graphite pole cathode and anode novel adhesion slot structure is provided, set by this
Meter can finally prepare the fuel battery double plates with good air-tightness, electrical and thermal conductivity, gas barrier property and mechanical strength.
The utility model is to improve yin, yang unipolar plate on the basis of original bipolar plates adhesion technique and be bonded into bipolar plates
Yield rate, on the basis of adjusting adhesive, that designs that a kind of novel adhesive slot can be improved that bipolar plates bonding makes can
By property, so that production cost be effectively reduced, production efficiency is improved.
Compared with prior art, the utility model has the advantage that
(1) the utility model is to the optimization design of pole plate bonding slot structure, so that not changing adhesion technique etc. outside other
Under conditions of boundary's factor, it is ensured that effective bonding of bipolar plates, greatly improves the production yield rate of bipolar plates.
(2) bipolar plates that the utility model bonds have good thermal conductivity, air-tightness, and mechanical strength
It greatly increases, improves the volume and gravimetric specific power density of fuel cell pack.
Detailed description of the invention
Fig. 1 is the utility model cathode veneer front schematic view；
Fig. 2 is the utility model cathode veneer front and back sides schematic diagram；
Fig. 3 is the utility model anode veneer front schematic view；
Fig. 4 is the utility model anode veneer reverse side schematic diagram；
Fig. 5 is the schematic enlarged-scale view of the utility model novel adhesion slot；
Fig. 6 is schematic diagram before the utility model novel adhesion slot is glued and pressed；
Fig. 7 is schematic diagram after the utility model novel adhesion slot is glued and pressed；
Fig. 8 is second of anode veneer reverse side schematic diagram；
Schematic diagram before Fig. 9 is the bipolar plates adhesive slot gluing of second of structure and presses；
Schematic diagram after Figure 10 is the bipolar plates adhesive slot gluing of second of structure and presses.
Wherein 1: oxidant import and export；2: coolant import and export；3: fuel import and export；4: cathode side diversion trench；5: leading
Cooling launder；6: adhesive slot；7: air discharge duct；8: anode-side diversion trench；9: bonding adhesive tape；10: cathode veneer；11: anode veneer；
B: bonding groove width；C: bonding groove depth；D: exhaust groove depth；E: exhaust groove width.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
Embodiment 1
Cathode veneer (air baffle) or anode veneer (hydrogen flow guide made from the method for taking machine to carve or be pressed and molded
Plate), or take cathode veneer (air baffle) made from the stamped molding mode of sheet metal or anode veneer (hydrogen flow guide
Plate), which is airflow guiding slot, and reverse side is to lead cooling launder.The front of anode veneer is hydrogen flow guiding slot, instead
Face is smooth surface.It is equipped with shallow and wide type adhesive slot 6 in cathode reverse side, and 6 surrounding of adhesive slot increases suitable shallow narrow air discharge duct 7,
The left and right sides of adhesive trough 6 is connected to by air discharge duct 7 with outside, to constitute above-mentioned cathode veneer and anode veneer to be bonded.
As shown in Figure 1, be cathode veneer front schematic view, front be equipped with oxidant import and export 1, coolant import and export 2,
Fuel import and export 3, cathode side diversion trench 4.As shown in Fig. 2, being the utility model cathode veneer reverse side schematic diagram, reverse side is equipped with
Cooling launder 5 and adhesive slot 6 are led, adhesive slot 6 is surrounded by a plurality of perpendicular air discharge duct 7,6 width B of shallow and wide type adhesive slot:
5~10mm, depth C:0.05~0.1mm, several air discharge ducts 7 are evenly distributed on the two sides of adhesive slot 6 so that adhesive slot 6 with
Pole plate outer edge and most two sides lead cooling launder 5 and each fluid import and export is connected.Several shallow narrow air discharge ducts 7
Depth D:0.02~0.08mm, width E:0.2~1.0mm, the specific volume appropriate adjustment for regarding pole plate adhesive trough.Such as Fig. 5 institute
Show.
As shown in figure 3, for anode veneer front schematic view front be equipped with oxidant import and export 1, coolant import and export 2,
Fuel import and export 3, anode-side diversion trench 8.As shown in figure 4, being the utility model anode veneer reverse side schematic diagram, reverse side is light
Face.
Cathode veneer and the method that anode veneer is bonded into bipolar plates are as follows: continuous bonding adhesive tape 9 is by craft or makes
It is coated in adhesive slot 6 with dispenser or using the mode of silk-screen printing, the width of bonding adhesive tape 9 is less than adhesive slot 6, and thickness is big
In 6 depth of adhesive slot, cathode veneer presses on press with anode veneer, and the temperature of the press is controlled 100 DEG C~180
DEG C, pressure is controlled at 0.2~0.3MPa, 0.5~1.0H of pressing time, double after adhering and solidifying is further taken out after natural cooling
Pole plate prevents rapid cooling from causing the warpage of bipolar plates, out-of-flatness.Bond adhesive tape 9 it is evenly laid out with adhesive slot 6 in, adhesive glue
Adhesive slot is discharged along air discharge duct 7 before viscose glue solidification in a small amount of gas that bubble and two boards in item 9 are carried secretly when pressing, and glues
Two pieces of unipolar plates are sticked together after adhesive curing, and between be zero clearance, completely attach to.Bipolar plates after bonding, cathode veneer
It is completely attached to anode loose side, zero clearance does not influence the good thermal conductivity of bipolar plates, air-tightness and mechanical strength.
The size of bonding adhesive tape meets in above-mentioned adhesive slot 6, and adhesive glue is filled up completely full adhesive slot after pressing, and will not overflow
Out to pole plate outer edge or blocking inside diversion trench.The bonding adhesive tape can select cheap and good bond effect viscose glue
Agent, such as epoxy glue, conductive carbon paste or silica gel, can replace expensive conductive silver glue completely.
Embodiment 2
Cathode veneer Facad structure is same as Example 1, and cathode veneer inverse layer structure is similar to Example 1, only bonds
6 depth of slot is the half of the cathode veneer bonding groove depth in embodiment 1, and the depth of air discharge duct 7 is the cathode in embodiment 1
The half of veneer exhaust groove depth；Anode veneer Facad structure is also same as Example 1, the difference is that, anode veneer is anti-
Face structure leads cooling launder 5 and adhesive slot 6 as shown in figure 8, reverse side is equipped with, and adhesive slot 6 is surrounded by a plurality of perpendicular row
Air drain 7, shallow and wide type adhesive slot 6 width B:5~10mm, depth C:0.25~0.05mm, several air discharge ducts 7 are evenly distributed on viscous
Close the two sides of slot 6 so that adhesive slot 6 and pole plate outer edge and most two sides lead cooling launder 5 and each fluid import and export is connected
It is logical.Depth D:0.01~0.04mm of several shallow narrow air discharge ducts 7, width E:0.2~1.0mm, it is specific to regard pole plate bonding
The volume appropriate adjustment of slot.
The reverse side of cathode veneer 10 and anode veneer 11 is equipped with adhesive slot 6 and air discharge duct 7, as shown in figure 9, being bonded
When, bonding adhesive tape 9 is placed therein in an adhesive slot 6, is pressed using the identical method of such as embodiment, is glued after pressing
It closes adhesive tape 9 and is fully filled with the adhesive slot 6 of cathode veneer 10 and anode veneer 11 on opposite, and do not overflow to pole plate outer edge
Or blocking inside diversion trench.Remaining is the same as embodiment 1.
Claims (10)
1. a kind of bonding slot structure of fuel battery double plates, the bipolar plates are equipped with diversion trench, fluid inlet and outlet and glue
Slot is closed, is equipped with adhesive glue in adhesive slot, which is characterized in that the adhesive slot surrounding is provided with a plurality of air discharge duct, and each air discharge duct connects
Logical adhesive slot and diversion trench or fluid inlet and outlet or pole plate outer edge beside it.
2. a kind of bonding slot structure of fuel battery double plates according to claim 1, which is characterized in that the bonding
Slot is shallow and wide type adhesive slot, width are as follows: 5~10mm, depth are as follows: 0.05~0.1mm.
3. a kind of bonding slot structure of fuel battery double plates according to claim 1, which is characterized in that the exhaust
Slot is shallow narrow air discharge duct, depth are as follows: 0.02~0.08mm, width are as follows: 0.2~1.0mm.
4. a kind of bonding slot structure of fuel battery double plates according to claim 1, which is characterized in that the bonding
Slot surrounding is uniformly provided with perpendicular a plurality of air discharge duct.
5. a kind of bonding slot structure of fuel battery double plates according to claim 1, which is characterized in that described is bipolar
Plate bonds by the following method: uniformly the continuous bonding adhesive tape of coating, the width for bonding adhesive tape are less than adhesive slot in adhesive slot,
Thickness is greater than bonding groove depth, and bipolar plates press on press, and bonding adhesive tape is evenly laid out in adhesive slot, bonds in adhesive tape
Adhesive slot, viscose glue solidification can be discharged in a small amount of gas that bubble and two boards are carried secretly when pressing before viscose glue solidification along air discharge duct
Two pieces of unipolar plates are sticked together afterwards, and between be zero clearance, completely attach to.
6. a kind of bonding slot structure of fuel battery double plates according to claim 5, which is characterized in that the press
At 100 DEG C~180 DEG C, pressure controls 0.5~1.0H of pressing time at 0.2~0.3MPa for temperature control.
7. a kind of bonding slot structure of fuel battery double plates according to claim 5, which is characterized in that before pressing, even
Continuous bonding adhesive tape is coated in adhesive slot by hand or using dispenser or by way of using silk-screen printing.
8. a kind of bonding slot structure of fuel battery double plates according to claim 5, which is characterized in that the bonding
The size of bonding adhesive tape meets in slot, and adhesive glue can be filled up completely full adhesive slot after pressing, and not overflow to pole plate outer edge
Or blocking inside diversion trench.
9. a kind of bonding slot structure of fuel battery double plates according to claim 5, which is characterized in that the bonding
Adhesive tape is epoxy glue, conductive carbon paste or silica gel.
10. a kind of bonding slot structure of fuel battery double plates according to claim 1, which is characterized in that described is double
Cathode veneer or anode veneer made from the method that pole plate takes machine to carve or be pressed and molded, or take sheet metal stamped molding
The front of cathode veneer made from mode or anode veneer, the cathode veneer or anode veneer is airflow guiding slot or hydrogen flow guiding
Slot, reverse side are to lead cooling launder or are smooth surface, and cooling launder or smooth surface side are being led in the adhesive slot setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821872407.3U CN208986097U (en) | 2018-11-13 | 2018-11-13 | The bonding slot structure of fuel battery double plates |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821872407.3U CN208986097U (en) | 2018-11-13 | 2018-11-13 | The bonding slot structure of fuel battery double plates |
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| CN208986097U true CN208986097U (en) | 2019-06-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301281A (en) * | 2018-11-13 | 2019-02-01 | 上海神力科技有限公司 | A kind of bonding slot structure of fuel battery double plates |
| CN110380081A (en) * | 2019-07-24 | 2019-10-25 | 珠海格力电器股份有限公司 | A kind of Wind-cooling type fuel cell pile and its system |
| CN114400412A (en) * | 2022-02-21 | 2022-04-26 | 中创新航科技股份有限公司 | Battery device and method for assembling battery device |
-
2018
- 2018-11-13 CN CN201821872407.3U patent/CN208986097U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109301281A (en) * | 2018-11-13 | 2019-02-01 | 上海神力科技有限公司 | A kind of bonding slot structure of fuel battery double plates |
| CN110380081A (en) * | 2019-07-24 | 2019-10-25 | 珠海格力电器股份有限公司 | A kind of Wind-cooling type fuel cell pile and its system |
| CN114400412A (en) * | 2022-02-21 | 2022-04-26 | 中创新航科技股份有限公司 | Battery device and method for assembling battery device |
| CN114400412B (en) * | 2022-02-21 | 2024-01-19 | 中创新航科技股份有限公司 | Battery device and method for assembling battery device |
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