CN106876724A - A kind of fuel cell rolling production method of soft graphite unipolar plate - Google Patents
A kind of fuel cell rolling production method of soft graphite unipolar plate Download PDFInfo
- Publication number
- CN106876724A CN106876724A CN201510915929.1A CN201510915929A CN106876724A CN 106876724 A CN106876724 A CN 106876724A CN 201510915929 A CN201510915929 A CN 201510915929A CN 106876724 A CN106876724 A CN 106876724A
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- plate
- unipolar plate
- graphite
- band
- fuel cell
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 71
- 239000010439 graphite Substances 0.000 title claims abstract description 71
- 238000005096 rolling process Methods 0.000 title claims abstract description 39
- 239000000446 fuel Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000011347 resin Substances 0.000 claims abstract description 28
- 239000007921 spray Substances 0.000 claims abstract description 14
- 238000004826 seaming Methods 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 13
- 238000010020 roller printing Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000499 gel Substances 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 230000006855 networking Effects 0.000 claims description 4
- 229920002367 Polyisobutene Polymers 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000000889 atomisation Methods 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 241000872190 Hypelate trifoliata Species 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 8
- 230000005404 monopole Effects 0.000 abstract description 3
- 239000007770 graphite material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8875—Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention relates to a kind of fuel cell rolling production method of soft graphite unipolar plate, first unipolar plate raw band is wrapped on rolling feeding machine (1)；The unipolar plate raw band that will be drawn from rolling feeding machine (1) carries out passing through roller printing machine (3) after compacting is smooth by a seaming roll (2) to unipolar plate raw band, carries out the molding in unipolar plate flow field, obtains unipolar plate band；By unipolar plate band by resin spray machine (4), resin is coated on the surface of unipolar plate band；Then individual unipolar plate is cut into by Scissoring device (5), is placed in stand-by in circulation carrier (6)；Or that in wind-up roll (7) unipolar plate band winding is obtained into monopole coiled sheet is stand-by.Compared with prior art, the present invention uses flexible graphite material, can be with continuous prodution, function admirable low cost, and manual operations is instead of with the mechanically actuated of streamline, human cost is reduced, in addition, the unipolar plate uniformity for obtaining is good, superior in quality, can be used for large batch of unipolar plate production.
Description
Technical field
The present invention relates to field of fuel cell technology, and in particular to a kind of fuel cell soft graphite unipolar plate
Rolling production method.
Background technology
Fuel cell is a kind of TRT that fuel and oxidant efficiently can be converted into electric energy.Flourishing state
All using the exploitation of large-scale fuel cell as primary study project, business circles are also denounceed with huge fund one after another, are engaged in fuel for family
The research and development of battery technology, have achieved many important achievements now so that fuel cell will replace tradition
Generator and internal combustion engine and be widely used on generator automobile.The high efficiency of fuel cell, pollution-free, construction week
Phase is short, the potential of easy care and low cost will ignite the green revolution of 21 century new energy and environment.
Bipolar plates are that cells in series gets up to constitute the critical component of battery pile, and main rising separates oxidant and go back
Former agent and the effect of collected current, it has the characteristics that：Good choke function；Conductive, good heat conductivity；
Relatively low bulk resistor and contact resistance；Corrosion resistance is strong；Light weight, Qiang Gao, it is suitable to batch machining etc..Therefore,
The influence such as bipolar plates volume, weight, cost not only on battery is larger, while also having to the electrical property of fuel cell
Very big influence.
In the prior art, the multiplex composite graphite plate of the material of bipolar electrode and metallic plate.Composite graphite plate density is small,
Light weight, but its electric conductivity is poor, and resistance to elevated temperatures is poor, frangible, is not suitable for powerful fuel cell.
Metallic plate electric conductivity is high, and intensity is big, can make bipolar electrode, but its poor corrosion resistance with relatively thin plate, electricity
Resistance is big, poor thermal conductivity, and easily pollutes membrane electrode, influences the life-span of fuel cell, in addition, metallic plate is used
Coating film treatment technique, expensive, high cost.It is specific as shown in table 1.
The advantage and disadvantage of the composite graphite plate of table 1 and metallic plate compare
Existing technique is all, by manual operations, metallic plate or graphite cake to be cut into the size of needs, then
Flow field is formed on its surface by the mode such as punching press or molding or etching, then the unipolar plate with flow field is pasted
Bipolar plates are made together.Because using manual operations, efficiency is low, labour intensity is big, considerably increases fuel cell
Human cost；Whole requirement of the technique to operative employee is high simultaneously, the battery pile possibility that different operators is made
Can be entirely different.
The content of the invention
The purpose of the present invention be exactly provided for the defect for overcoming above-mentioned prior art to exist it is a kind of it is simple to operate, from
The dynamicization degree fuel cell high rolling production method of soft graphite unipolar plate.
The purpose of the present invention can be achieved through the following technical solutions：A kind of fuel cell soft graphite unipolar plate
Rolling production method, comprise the following steps：
(1) flexible graphite plate raw band is wrapped on rolling feeding machine；
(2) the flexible graphite plate raw band drawn from rolling feeding machine is rolled by a pair of pressure rollers, to list
Pole plate raw band carry out compacting it is smooth, graphite cake surface roughness is reached within 0.20 μm, improve raw material it is whole
Body intensity, decay resistance has also strengthened；
(3) will be compacted it is smooth after flexible graphite plate raw band by roller printing machine, carry out the molding in flow field,
Obtain pole plate band；
(4) the pole plate band in flow field will be molded by resin spray machine, resin has been coated in the whole surface of pole plate band
The flexible graphite polar plate of banding is obtained.
Using soft graphite, this material has splendid heat conduction and electric conductivity to raw band used by the present invention,
Lighter than metal, its performance is sufficiently verified on fuel cell bus, handling of goods and materials car.Additionally, soft
Property graphite anti-corrosion, have good mechanical performance, easily moulding, design flexibility is strong, and sufficient raw is big
The good raw material of batch pipelining production bipolar electrode.
The flexible graphite polar plate of the banding obtained by step (4) cuts into individual pole plate by Scissoring device, is placed in
It is stand-by in circulation carrier；
Or, the flexible graphite polar plate of gained banding is wrapped in wind-up roll as pole plate and rolls up stand-by.
The drive system of described rolling feeding machine is synchronous with the rolling speed control system networking of seaming roll (2).
Described seaming roll is molded equivalent to platen-press, pressure≤3.0MPa.Seaming roll is divided to upper and lower two, in
Between have tiny gap, the size in the gap is the thickness of target unipolar plate, therefore, when soft graphite board raw material
Band logical is crossed after pressure roller, surfacing so that follow-up molding becomes accurate.
Described roller printing machine uses embedded type aluminum molding jig, and roll die is made by required Plane Fluid Field.Rolling
Cylinder printing machine is divided to upper and lower two rollers, and there is the model in flow field on the surface of each roller, when flexible graphite plate raw material band logical
Out-of-date, drum roll is molded by flow field model on its surface, the both sides of flexible graphite plate raw band is all molded
Upper flow field；Also, two seaming rolls are necessarily synchronized with the movement, and flow field model is mutually matched, such ability
Ensure that the flow field of unipolar plate tow sides is qualified.
Graphite resin coating is forced into below 100MPa by described resin spray machine.Under high pressure conditions, coating leads to
Cross the ejection of induction system moment, rapid expansion, atomization, uniform directive graphite electrode plate surface, formation thickness≤0.10mm
Coating.
The resin that described resin spray machine is coated on pole plate band contains the graphite resin of high-strength organic gel, can effectively drop
The porosity of low graphite electrode plate, improves bulk density, enhances the intensity of graphite electrode plate, anticorrosive property and wear-resisting
Property, its Stability Analysis of Structures, the high-strength organic gel is included organic silica gel, epoxide-resin glue or polyisobutene glue.
Equipped with a tracking roller that can change position before the core of described wind-up roll, its effect is by flexible stone
Black pole plate crimped is leaned against in winding core, contact winding or small―gap suture winding is carried out, by smooth soft graphite pole
Coiled sheet is gone in core rapidly, realizes the purpose of smooth winding.Individual pole plate can be by manual operations, by two pieces
Pole plate is combined makes bipolar plates, and for the production of fuel cell unit, pole plate band is wound on wind-up roll, can be real
The pile line operation of existing bipolar plates.
Compared with prior art, beneficial effects of the present invention are embodied in following several respects：
(1) monopole plate material of the invention uses soft graphite, and rotproofness is good, conducts electricity very well, and resistance is small,
Lightweight and low cost, are suitable for the manufacture of fuel cell commercial car.
(2) mechanically actuated of present invention streamline instead of manual operations, and efficiency high greatly reduces manpower
Cost.
(3) all unipolar plates of the invention are all completed by pile line operation, and two pieces of performance phases of unipolar plate will not occur
The very big accident of difference, it is ensured that the uniformity of the unipolar plate quality of production.
Brief description of the drawings
Fig. 1 is the production line schematic diagram of individual unipolar plate；
Fig. 2 is the production line schematic diagram of monopole coiled sheet.
Wherein, 1 is rolling feeding machine, and 2 is seaming roll, and 3 is roller printing machine, and 4 is resin spray machine, and 5 are
Scissoring device, 6 is circulation carrier, and 7 is wind-up roll.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment enters under premised on technical solution of the present invention
Row is implemented, and gives detailed implementation method and specific operating process, but protection scope of the present invention is not limited to down
The embodiment stated.
Embodiment 1
As shown in figure 1, a kind of fuel cell rolling production method of soft graphite unipolar plate, comprises the following steps：
(1) flexible graphite belt is wrapped on rolling feeding machine 1, obtains pole plate stock roll.Rolling feeding machine 1
Rotate counterclockwise, unipolar plate raw band is drawn, be sent in seaming roll 2.The drive system of rolling feeding machine and rolling
The rolling speed control system networking of pressure roller 2 is synchronous；
(2) in seaming roll 2, soft graphite raw band be driven plain it is whole after deliver to roller printing machine 3, roller print
Flower machine 3 uses embedded type aluminum molding jig, and roll die is made by required Plane Fluid Field.By roller printing machine 3
Soft graphite raw band both sides be molded flow field, obtain pole plate band；
(3) the pole plate band that will be obtained is passed through in resin spray machine 4, and coated to the surface of pole plate band has containing high-strength
The graphite resin of machine glue, the resin can effectively reduce the porosity of graphite electrode plate, improve bulk density, enhance
The intensity of graphite electrode plate, anticorrosive property and wearability, make its Stability Analysis of Structures.Resin spray machine 4 applies graphite resin
Material is forced into below 100MPa.Under high pressure conditions, coating is sprayed by induction system moment, rapid expansion, mist
Change, uniform directive graphite electrode plate surface, form the coating of thickness≤0.10mm；
(4) enter in Scissoring device 5 by the pole plate band of resin spray, be cut into individual unipolar plate, then
By the effect of gravity, fall into stand-by in the circulation carrier 6 of lower section.
Embodiment 2
As shown in Fig. 2 a kind of fuel cell rolling production method of soft graphite unipolar plate, comprises the following steps：
(1) flexible graphite belt is wrapped on rolling feeding machine 1, obtains pole plate stock roll.Rolling feeding machine 1
Rotate counterclockwise, unipolar plate raw band is drawn, be sent to drive system and the rolling of rolling feeding machine in seaming roll 2
The rolling speed control system networking of roller 2 is synchronous；
(2) in seaming roll 2, soft graphite raw band be driven plain it is whole after deliver to roller printing machine 3, roller print
Flower machine 3 uses embedded type aluminum molding jig, and roll die is made by required Plane Fluid Field.By roller printing machine 3
Soft graphite raw band both sides be molded flow field, obtain pole plate band；
(3) the pole plate band that will be obtained is passed through in resin spray machine 4, and coated to the surface of pole plate band has containing high-strength
The graphite resin of machine glue, the resin can effectively reduce the porosity of graphite electrode plate, improve bulk density, enhance
The intensity of graphite electrode plate, anticorrosive property and wearability, make its Stability Analysis of Structures.Resin spray machine 4 applies graphite resin
Material is forced into below 100MPa.Under high pressure conditions, coating is sprayed by induction system moment, rapid expansion, mist
Change, uniform directive graphite electrode plate surface, form the coating of thickness≤0.10mm；
(4) wound in wind-up roll 7 by the pole plate band of resin spray, obtain flexible graphite polar plate volume stand-by.Should
Equipped with a tracking roller that can change position before the core of wind-up roll, its effect is by flexible graphite polar plate crimped
Lean against in winding core, carry out and contact winding or small―gap suture winding, by rapid turn smooth of flexible graphite polar plate volume
Onto core, the purpose of smooth winding is realized.
Claims (8)
1. a kind of fuel cell rolling production method of soft graphite unipolar plate, it is characterised in that the method bag
Include following steps：
(1) flexible graphite plate raw band is wrapped on rolling feeding machine (1)；
(2) the flexible graphite plate raw band drawn from rolling feeding machine (1) is entered by a pair of seaming rolls (2)
Row rolling, to unipolar plate raw band carry out compacting it is smooth, graphite cake surface roughness is reached within 0.20 μm,
The bulk strength of raw material is improved, decay resistance has also strengthened；
(3) will be compacted it is smooth after flexible graphite plate raw band by roller printing machine (3), carry out the mould in flow field
Pressure, obtains pole plate band；
(4) the pole plate band in flow field will be molded by resin spray machine (4), has been coated in the whole surface of pole plate band
Resin is the flexible graphite polar plate that banding is obtained.
2. a kind of fuel cell according to claim 1 rolling production method of soft graphite unipolar plate,
Characterized in that, the flexible graphite polar plate of the banding obtained by step (4) cuts into individual by Scissoring device (5)
Pole plate, be placed in stand-by in circulation carrier (6)；
Or, the flexible graphite polar plate of gained banding is wrapped in wind-up roll (7) as pole plate and rolls up stand-by.
3. a kind of fuel cell according to claim 1 rolling production method of soft graphite unipolar plate,
Characterized in that, the drive system of described rolling feeding machine (1) is with the rolling speed control of seaming roll (2)
System networking is synchronous.
4. a kind of fuel cell according to claim 1 rolling production method of soft graphite unipolar plate,
Characterized in that, described seaming roll (2) pressure≤3.0MPa.
5. a kind of fuel cell according to claim 1 rolling production method of soft graphite unipolar plate,
Characterized in that, described roller printing machine (3) uses embedded mould, can be extruded by the roll die
Plane Fluid Field.
6. a kind of fuel cell according to claim 1 rolling production method of soft graphite unipolar plate,
Characterized in that, graphite resin coating is forced into below 100Mpa, high pressure by described resin spray machine (4)
Under state, coating is sprayed by induction system moment, rapid expansion, atomization, uniform directive graphite electrode plate surface,
Form the coating of thickness≤0.10mm.
7. a kind of fuel cell according to claim 6 rolling production method of soft graphite unipolar plate,
Characterized in that, the resin that described resin spray machine (4) is coated on pole plate band is the stone containing high-strength organic gel
Inkwood fat, can effectively reduce the porosity of graphite electrode plate, improve bulk density, enhance graphite electrode plate intensity,
Anticorrosive property and wearability, make its Stability Analysis of Structures, the high-strength organic gel include organic silica gel, epoxide-resin glue or
Polyisobutene glue.
8. a kind of fuel cell according to claim 1 rolling production method of soft graphite unipolar plate,
Characterized in that, equipped with a tracking roller that can change position before the core of described wind-up roll (7), its
Effect is to lean against in winding core flexible graphite polar plate crimped, carries out contact winding or small―gap suture winding, will be flat
Whole flexible graphite polar plate volume is gone in core rapidly, realizes the purpose of smooth winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915929.1A CN106876724A (en) | 2015-12-10 | 2015-12-10 | A kind of fuel cell rolling production method of soft graphite unipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915929.1A CN106876724A (en) | 2015-12-10 | 2015-12-10 | A kind of fuel cell rolling production method of soft graphite unipolar plate |
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| Publication Number | Publication Date |
|---|---|
| CN106876724A true CN106876724A (en) | 2017-06-20 |
Family
ID=59177838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510915929.1A Pending CN106876724A (en) | 2015-12-10 | 2015-12-10 | A kind of fuel cell rolling production method of soft graphite unipolar plate |
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| CN (1) | CN106876724A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321400A (en) * | 2017-12-29 | 2018-07-24 | 上海神力科技有限公司 | Fuel cell is molded the pairs of production method of bipolar plates |
| CN109921052A (en) * | 2019-03-19 | 2019-06-21 | 上海神力科技有限公司 | A kind of preparation method of vertical lamellar structure flexible graphite polar plate |
| CN114434938A (en) * | 2022-02-08 | 2022-05-06 | 苏州鸿凌达电子科技股份有限公司 | A it closes roller to link board-like waste discharge for improving product yield |
| CN114725417A (en) * | 2022-04-06 | 2022-07-08 | 博远(山东)新能源科技发展有限公司 | Continuous preparation method and equipment of graphite bipolar plate |
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| US20020179230A1 (en) * | 2001-06-01 | 2002-12-05 | Mercuri Robert Angelo | Assembling bipolar plates |
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| US20070125493A1 (en) * | 2005-12-05 | 2007-06-07 | Jang Bor Z | Method for producing highly conductive sheet molding compound, fuel cell flow field plate, and bipolar plate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321400A (en) * | 2017-12-29 | 2018-07-24 | 上海神力科技有限公司 | Fuel cell is molded the pairs of production method of bipolar plates |
| CN108321400B (en) * | 2017-12-29 | 2023-05-05 | 上海神力科技有限公司 | Method for producing molded bipolar plates of fuel cell in pairs |
| CN109921052A (en) * | 2019-03-19 | 2019-06-21 | 上海神力科技有限公司 | A kind of preparation method of vertical lamellar structure flexible graphite polar plate |
| CN114434938A (en) * | 2022-02-08 | 2022-05-06 | 苏州鸿凌达电子科技股份有限公司 | A it closes roller to link board-like waste discharge for improving product yield |
| CN114434938B (en) * | 2022-02-08 | 2024-01-16 | 苏州鸿凌达电子科技股份有限公司 | Continuous-pulling type waste discharge roller for improving product yield |
| CN114725417A (en) * | 2022-04-06 | 2022-07-08 | 博远(山东)新能源科技发展有限公司 | Continuous preparation method and equipment of graphite bipolar plate |
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