CN102208659A - Manufacturing process and device of bipolar plate for fuel cell - Google Patents
Manufacturing process and device of bipolar plate for fuel cell Download PDFInfo
- Publication number
- CN102208659A CN102208659A CN2011101209383A CN201110120938A CN102208659A CN 102208659 A CN102208659 A CN 102208659A CN 2011101209383 A CN2011101209383 A CN 2011101209383A CN 201110120938 A CN201110120938 A CN 201110120938A CN 102208659 A CN102208659 A CN 102208659A
- Authority
- CN
- China
- Prior art keywords
- plate
- resin
- expanded graphite
- bipolar plate
- bipolar
- 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
Links
Images
Classifications
-
- 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
A manufacturing process and a device of a bipolar plate for fuel cells. The process comprises the following steps: dry-mixing expanded graphite and resin powder; pressing the mixed materials of expanded graphite and resin powder into a precompressed plate; pressing again to obtain corresponding flow passages on one side or two sides; separating the precompressed plate with pressed flow passages of the bipolar plate to obtain a molded bipolar plate; curing and cooling the molded bipolar plate to obtain the bipolar plate product. The device comprises at least one group of vibrating feeders which are used to feed the expanded graphite and resin powder on a conveyer belt respectively; a conveyer belt for conveying the mixed expanded graphite and resin powder; a roller press for pressing the mixture on the conveyer belt into a precompressed plate; a block press for pressing the precompressed plate again and obtaining corresponding flow passages, and a curing furnace for curing and molding the bipolar plate. The block press comprises a mold for pressing the flow passages of the bipolar plate. The expanded graphite/resin composite bipolar plate of the invention has excellent performance in conductivity, gas-barrier rate, and mechanical strength, and has low price.
Description
Technical field
The present invention relates to the used in proton exchange membrane fuel cell mould and annotate graphite bi-polar plate and manufacturing process thereof, specifically, is exactly by rational expanded graphite/resin proportioning, adopts the method for mold pressing, and fuel battery double plates is made in one-shot forming.
Background technology
Proton Exchange Membrane Fuel Cells (PEMFC) changes into electric energy directly, continuously with fuel (hydrogen) and airborne chemical energy.Its basic principle is to feed fuel (H in anode-side
2Perhaps methyl alcohol etc.), feed oxidant (O at cathode side
2Perhaps air), and makes it under the effect of catalyst, electrochemical reaction to take place respectively, generate water and also produce electric energy.Simultaneously, for the instant heat that produces in the electrochemical reaction process of getting rid of, need that also cooling fluid (being generally water or air) is fed inside battery and dispel the heat.When the fuel cell operate as normal, inner fuel, oxidant and cooling fluid must be separated effectively by bipolar plates, and rely on its flow passage structure to distribute effectively in anode, negative electrode and cooling fluid cavity respectively.
In the critical piece of Proton Exchange Membrane Fuel Cells, bipolar plates not only on weight, also on the volume and on the cost in occupation of pith.Such as aspect the cost, if adopt the native graphite plate as bipolar plates, its material and manufacturing cost will account for 10～30% of whole stack.Bipolar plates is not only monocell is together in series and is assembled into the critical component of battery pile, but also needs reacting gas is imported the electric current that Catalytic Layer and conduction reaction produce, and also shoulders the heat radiation and the drain function of entire cell simultaneously.Therefore the quality of bipolar plates quality will directly determine the quality of fuel cell pack performance and the length in useful life.Usually, Proton Exchange Membrane Fuel Cells operates in acidity, 80～100% relative humidity of 60～80 ℃ of temperature, pH2～3, and has in the environment of certain electromotive force.Harsh relatively working condition requires bipolar plates not only will have excellent electrical and thermal conductivity, certain mechanical strength, good chemical stability, gasproof body permeability, but also must possess that the cost of material is low, easily processing, good dimensional stability etc.Therefore, high-performance, the exploitation of bipolar plates cheaply seem extremely important for the commercialization that promotes fuel cell.
The bipolar plates of having developed at present use mainly is metallic plate, pure graphite cake and composite panel three major types.Wherein, metallic plate has the favorable conductive thermal conductivity, and it is also air tight to be thinned to 0.1mm, but and the gas flow punch forming, being easy to realize mass production, this helps the lifting of volumetric specific power and the decline of manufacturing cost.But, the mould required precision height of metal double polar plates, cost is also high; Must be to metal base, especially special processing is carried out improving its chemical stability in the surface, otherwise is prone to corrosion of metal sheet even rust is worn, and causes useful life of battery to shorten even catastrophic destruction is taken place.
Pure graphite cake has favorable conductive thermal conductivity, chemical stability, is used for the manufacturing of business-like pile by the success that takes the lead in of Ballard company.Pure graphite cake is general to adopt traditional machine-tooled method processing flow channel, and runner just can not too narrow (such as not being lower than 0.7mm).Because if runner is narrow, the caused scale error of the wearing and tearing of process tool in the course of processing will can't stand; In addition, machining process is consuming time also very long, and production efficiency is not high, and these all cause the processing cost of bipolar plates higher, even surpasses material cost; On the other hand, pure graphite cake is crisp, and the existence of its internal void causes its easy gas leakage, must keep certain thickness to guarantee its air-tightness, and this has just restricted the lifting of pile volumetric specific power and gravimetric specific power.
Have to be pointed out that no matter be to adopt metallic plate or the pure graphite cake cell bipolar plate base material that acts as a fuel, the stripping of metal impurities in corrosion of metal and the pure graphite cake all can cause the appearance of impurity cationics such as iron, aluminium, calcium, magnesium, sodium.And these cationic existence can cause the decline of proton exchange membrane proton conducting ability, have a strong impact on fuel cell performance.
In order to overcome the defective of above-mentioned two kinds of materials, promote the commercialization of Proton Exchange Membrane Fuel Cells, just must seek its substitute, promptly various types of composite materials are such as metal/graphite composite plate, native graphite/resin composite plates and expanded graphite (EG)/resin composite plates etc.Expanded graphite is when possessing good corrosion resistance of native graphite and electrical and thermal conductivity, because its volume sharply expands and the compression back easily forms fine and close layer structure, expanded graphite also has the moulding of being easy to, high air barrier rate and is difficult for efflorescence, is difficult for advantage such as stripping metal ion.The present invention relates to the manufacture method of expanded graphite/resin composite plates.
The ultra-thin graphite bi-polar plate that people's such as Zhang Mengtong patent of invention (2008100034172.5) proposes is a vacuum impregnation thermosetting resin in the bipolar plates that pure graphite makes, and excessive resin is removed to obtain the satisfying product that conductivity requires in the top layer of polishing at last.Though said method is the graphite/resin composite material, does not change the essence that bipolar plate runner needs the machine work moulding, the increase of top layer polishing operation more is unfavorable for reducing manufacturing cost.People's such as Gibb P.R patent of invention (WO0041260) has been announced a kind of improved-type straight channel bipolar plates, wherein relates to the preparation method of expanded graphite/resin composite bipolar plate very briefly.This preparation method is that substep carries out, the promptly first mode molding runners that the expanded graphite plate of pre-molding is annotated by roll-in, mold pressing or mould, and then flood low viscous resin.
People's such as Mercuri R.A. patent of invention (WO0064808) discloses serial of methods and the streamline process units from Preparation of Expanded Graphite to the bipolar plates moulding.It adopts the expanded graphite roll-in of prepared fresh to certain thickness, vacuum is sprayed resin solution, controls the amount that immerses resin by the speed that the control prefabricating plate moves, then oven dry, roll-in, obtain having the bipolar plates of flow field structure, curing molding obtains the final finished bipolar plates again.Zheng Yong equality people's patent of invention (200410008461.X) disclosed one step ahead or the substep graphite worm is suppressed the flexible graphite bipolar plates, again by flooding 5～20wt% BAS or/and the way of glue base polymer is improved its intensity and air tight property.People's such as Zhang Haifeng patent of invention (200410020905.1) discloses a kind of manufacturing process of expanded graphite bipolar plates, promptly prepare the low-density expanded graphite cake earlier, flooding then with ethanol is the mixed solution of the multiple thermosetting resin of solvent, obtains flat board or band flow-field plate through mold pressing or roll-in then.The characteristics of this patent of invention are to have added mineral powder in prescription, and bipolar plates is by 2～7 layers of bonding forming of structure.Above-mentioned technology is wet processing, promptly for resin and graphite worm are mixed, all need add the dissolution with solvents resin, this is present the most frequently used expanded graphite/mixed with resin method [X.Q.Yan, et al.J.Power Sources, 2006,160:252], this method helps the mutual dispersion of resin and expanded graphite and evenly mixes.But the defective of wet mixing method also is conspicuous, the removal because the solvent of introducing must volatilize in follow-up resin solidification operation.This can increase the operating time on the one hand, is unfavorable for that production capacity improves; Simultaneously also can degradation manipulation environment, even the harm workers ' health; Even more serious is, solvent can stay the duct in expanded graphite in volatilization process, and the porosity of composite plate is risen, and this has just increased the leak rate of product; Even this porosity is in the scope that can tolerate,, also can cause occurring in the composite plate bubble and crack if solidification process is slow inadequately.This will make product quality have a greatly reduced quality.
In order to overcome the above-mentioned shortcoming of wet mixing method, the disclosed patents of people (JP 11354136) such as TASHIRO AKITSUGU have been reported and have been utilized low viscous liquid resin, carry out the technology that mechanical mixture prepares composite dual-electrode plates as epoxy resin, phenolic resins and acrylic resin etc. with expanded graphite.Simultaneously, control the conductivity of gained bipolar plates by the size of control expanded graphite particles.Although the negative effect that these class methods have avoided the adding of solvent to bring, the resin of stream plastic state is a difficult point with even mixing of expanded graphite.
In order to solve above-mentioned two kinds of problems that hybrid technique brings, the someone has proposed dry pigmentation, promptly adopts solid resin to mix mutually with expanded graphite, and need not add solvent.The polishing that the simplest dry pigmentation can adopt document [S.R.Dhakate, et al.Int.J.Hydrogen Energy, 2008,33:7146] and [S.I.Heo, et al.J.Power Sources, 2007,171:396] to describe.Yet, because the density of vermiform expanded graphite is hundreds of/one of native graphite, and it is very easily broken, if just expanded graphite and resin are carried out simple mechanical mixture, be difficult to reach good mixing effect and consuming time longer, expanded graphite also can the part so that cataclasm fully, lose original vermicular texture.And vermicular texture be cross-linked with each other, twine just expanded graphite/resin can when possessing the good conductive thermal conductivity, also have good flexible basic.Patent [T.Yoshitaka.JP2002160217 (A)] is mentioned dry pigmentation, but concrete dry mixing process and unknown parameters.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing process and equipment of bipolar plate for fuel cell, can prepare a kind of possess good corrosion resistance, electrical and thermal conductivity, gas barrier property and mechanical strength, fuel battery double plates with low cost.
For reaching above purpose, solution of the present invention is:
A kind of manufacturing process of bipolar plate for fuel cell, it may further comprise the steps:
1) expanded graphite and the toner that will have vermicular texture done mixed;
2) compound of expanded graphite and resin is pressed into the prefabricating plate with certain thickness and shape;
3) with step 2) prefabricating plate under certain pressure intensity and temperature, be pressed into prefabricating plate once more with specific thicknesses and density, and its one side or the corresponding runner of two-sided extrusion;
4) bipolar plates that will extrude runner is separated with the sheet material of whole prefabricating plate in the step 3), obtains the bipolar plates of moulding;
5) the certain loading of carrying is cured on the bipolar plates of moulding, after the cooling, promptly obtains the bipolar plates product.
Resin is a thermosetting resin in the described step 1), and its content is 10～50wt%; The phosphorus content of described expanded graphite is greater than 99%, and expansion multiple is 100～300.
Described resin is epoxy resin, polyacrylic resin, phenolic resins, polyimide resin or fluorocarbon resin; The diameter of toner is 50～80 μ m.
Described step 2) the prefabricating plate thickness in is 3～10mm, and density is 0.2～1.0g/cm
3
Pressure in the described step 3) is 10MPa～100MPa, and temperature is 100～300 ℃; Prefabricating plate thickness in the step 3) is 1.0～2.0mm, and density is 1.0～2.0g/cm
3
The runner that suppresses on the prefabricating plate in the described step 3) comprises flow field, seal groove, highway and location hole.
The pressure of loading is 1～10MPa in the described step 5), and the temperature of curing is 120～250 ℃, and the time of curing is 1-10min.
A kind of mould that is used to suppress the bipolar plate runner described in the step 3) comprises groove and ridge, and the drafting angle θ of groove is 5～20 °, and groove depth h is 0.2～1mm; Groove is 0.5: 1～2: 1 with the width ratio of ridge, but its width all should not surpass 2mm.
A kind of equipment that is used for above-mentioned manufacturing process, it comprises:
At least one group of oscillating feeder comprises first oscillating feeder and second batcher, is used for respectively expanded graphite and toner being invested in conveyer belt;
Conveyer belt is used to carry the expanded graphite and the resin of mixing;
Roll squeezer, the expanded graphite and the resin that are used for mixing on the conveyer belt are pressed into prefabricating plate;
Moulding press has the aforementioned mould that suppresses bipolar plate runner, is used for suppressing prefabricating plate once more and extruding corresponding runner;
And curing oven, be used for the bipolar plates of curing molding.
Owing to adopted such scheme, the present invention has following characteristics: the tridimensional network that process of the present invention will fully keep, utilize expanded graphite to be cross-linked with each other and to constitute, and by evenly sneaking into the resin powder, make fuel cell composite bipolar plate with favorable conductive thermal conductivity and flexibility; This technology be a kind of environmental protection, efficiently, technology cheaply, and can realize serialization production.Its realization can significantly improve performance, the durability of bipolar plates, and reduce the materials processing cost.Solve the key issue that these present urgent needs will solve, promote significant for the commercialization of Proton Exchange Membrane Fuel Cells.
Description of drawings
Fig. 1 is expanded graphite/resin composite bipolar plate preparation technology flow chart.
Fig. 2 is the molding die schematic diagram of expanded graphite/resin composite bipolar plate.
Fig. 3 is expanded graphite/resin composite bipolar plate schematic diagram.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawing illustrated embodiment.
The present invention adopts the mode to expanded graphite and thermosetting resin employing vibrating feed, realize solvent-free even mixing, use manufacturing process such as roll-in, mold pressing again, when keeping the expanded graphite worm structure, one-shot forming obtains possessing the bipolar plates of specific flow field structure; Thereby make expanded graphite/resin composite bipolar plate when possessing good conductive, thermal conductivity, gas barrier property and mechanical strength, reduce its production cycle and cost.
A kind of fuel cell preparation method of expanded graphite/resin composite bipolar plate, its concrete steps are as follows:
Expanded graphite with vermicular texture that (1) will newly make and toner are done and are mixed.As shown in Figure 1, by first oscillating feeder 1 and second oscillating feeder 2 that expanded graphite and toner is unrestrained equably to conveyer belt 3, parameters such as the delivery rate by adjusting first oscillating feeder 1 and second oscillating feeder 2, conveyer belt 3 speeds of travel are adjusted the ratio of expanded graphite and resin, make the content of resin account for 10～50wt%; Meanwhile, the unrestrained material total amount to conveyer belt 3 of control is 0.1g/sec～10g/sec; In order to make final bipolar plates reach certain thickness, can also further increase unrestrained material total amount by second group, the 3rd group oscillating feeder that reaches group series connection at the most, the oscillating feeder of every group of series connection comprises two oscillating feeders, is respectively applied for the input expanded graphite.
Because little, the frangible characteristic of its density, expanded graphite is difficult for accumulating, and the expanded graphite that is adopted among the present invention is necessary for prepared fresh, and phosphorus content is greater than 99%; Expansion multiple is between 100～300.
The resin that is adopted among the present invention is a thermosetting resin, such as, but be not limited to epoxy resin, polyacrylic resin, phenolic resins, polyimide resin, fluorocarbon resin etc.; The diameter of toner is between 50～80 μ m.
(2) adopt roll squeezer 4 with conveyer belt 3 carry come, have certain thickness expanded graphite/resin material and be pressed into thickness and reduce, but the sheet material of existing definite shape, the i.e. prefabricating plate of indication hereinafter.
Resulting prefabricating plate thickness is 3～10mm among the present invention, and density is between 0.2～1.0g/cm
3Between.
(3) adopt moulding press 5,, suppress prefabricating plate at a certain temperature, make it reach specific thickness and density, simultaneously or the two-sided runner that extrudes once at it by the mode of mold pressing with the mould (see figure 2) of the given shape that has flow field and seal groove; With this simultaneously, realize the fusing of resin and curing fast.
The pressure of the moulding press that is adopted among the present invention must reach 10MPa～100MPa.Temperature must reach 100～300 ℃.
The thickness of resulting bipolar plates must be between 1.0～2.0mm among the present invention, and density is at 1.0～2.0g/cm
3Between, with performances such as the power ratio density that guarantees fuel cell and mechanical strength, gas barrier properties.
Mould of the present invention as shown in Figure 2, mould is made of groove 9 and ridge 10, wherein the drafting angle θ of each groove is 5～20 °, groove depth h is 0.2～1mm; Groove is 0.5: 1～2: 1 with the width ratio of ridge, but its width all should not surpass 2mm.Above-mentioned parameter is taken into account demoulding efficiency and the proposition of fuel cell power generation performance in the bipolar plates course of processing.Draft angle θ is too small, the separation difficulty of mould and bipolar plates; Draft angle θ is excessive, then can influence the width ratio of bipolar board slot and ridge; And suitable groove 9, ridge 10 width also can prevent on the other hand that than being that the fuel battery inside fluid evenly distributes and heat, the good needs of deriving of electricity expanded graphite from the foaming phenomenon occurring in density major part; Groove depth h is excessive can to influence the withdrawing pattern effect equally, groove depth h cross shallow can cause operation of fuel cells again the time gas flow resistance strengthen.
(4) bipolar plates that will possess flow field 71 and seal groove 72 is sent to punch press 6, goes out to have highway 73 and location hole 74 through holes such as grade, and separates with whole sheet material, obtains bipolar plates 7 (see figure 3)s of moulding.
(5) product of typing is sent in the curing oven 8 that temperature is set at a certain temperature between 120～250 ℃, and on each piece bipolar plates, placed certain loading, make that pressure reaches 1～10MPa on the plate; After placing certain 1～10min, completely crued bipolar plates is taken out, natural cooling promptly gets final bipolar plates product.
Among the present invention, the curing process of bipolar plates must be cured being higher than under the thermosetting resin curing temperature.
Among the present invention, the curing process of bipolar plates must be finished under the condition of certain loading, is in order situations such as bubbling, distortion, cracking to occur in the solidification process that prevents to heat up, to destroy the structure of bipolar plates.
Among the present invention, after bipolar plates heated up and solidifies, necessary natural cooling caused the inner generation of bipolar plates thermal stress in order to avoid cooling rate is too fast, thereby makes product abnormal conditions such as warpage, bending, distortion occur.
Embodiment
With expansion multiple is that the phenolic resins powder that 280 times expanded graphite and particle diameter are 30～40 μ m drops into shown in Figure 1 passing through in first oscillating feeder 1 and second oscillating feeder 2 respectively, by regulating the parameters such as size of exciting force and discharge gate, make expanded graphite and phenolic resins by 7: 3, be that resin content is the ratio of 30wt%, unrestrained equably to conveyer belt 3, and the speed of travel of adjusting conveyer belt 3 is 5cm/ second.Simultaneously, also increased by second group, the 3rd group vibrating feed unit, further increased unrestrained material total amount, the expanded graphite/resin height that finally is piled up on the conveyer belt 3 is reached about 1cm.Conveyer belt 3 is delivered to roll squeezer 4 with material, promptly gets the prefabricating plate that thickness is 5mm after roll-in, and the density of this prefabricating plate is 0.4g/cm
3
The prefabricating plate that makes has possessed certain profile and intensity, it is delivered to adopts in the moulding press 5, uses the mould of the given shape that has flow field and seal groove to carry out mold pressing.This mold is made up of dynamic model that possesses groove and ridge structure and light face cover half, and wherein the drafting angle θ of each groove is 18 ° on the dynamic model, and groove depth h is 0.4mm; Groove is 1～1 with the width ratio of ridge; The inboard coating of the die cavity that dynamic model and cover half surround release agent.Molding pressure is 18MPa, and temperature is 180 ℃.Prefabricating plate in the die cavity is compressed into original about 20% in the effect lower volume of pressure and temperature, and obtains and the corresponding flow field structure of die shape; Meanwhile, resin wherein melts fast and combines closely with the myrmekitic texture of expanded graphite.The thickness of the bipolar plates of gained is that density is at 1.5g/cm about 1.0mm
3About.The bipolar plates of gained is transported to punch press 6, goes out through holes such as highway, location hole, and separates with whole sheet material, obtains the bipolar plates 7 of moulding.The bipolar plates of moulding is sent in the curing oven 8,180 ℃ of heat preservation solidification.On each piece bipolar plates, place the stereotype of fixed mass during curing, make the pressure that acts on the every bipolar plates reach 3MPa; After placing 20min, completely crued bipolar plates is taken out, natural cooling promptly gets final bipolar plates product.
After tested, the conductivity of prepared fuel cell bipolar plate is 192.31S/cm, and bending strength reaches 41.48MPa, density 1.5g/cm
3The air penetrability of hydrogen is 10
-6Cm
3Cm
-2S
-1
The above-mentioned description to embodiment is can understand and apply the invention for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the invention is not restricted to the embodiment here, those skilled in the art should be within protection scope of the present invention for improvement and modification that the present invention makes according to announcement of the present invention.
Claims (9)
1. the manufacturing process of a bipolar plate for fuel cell, it is characterized in that: it may further comprise the steps:
1) expanded graphite and the toner that will have vermicular texture done mixed;
2) compound of expanded graphite and resin is pressed into the prefabricating plate with certain thickness and shape;
3) with step 2) prefabricating plate under certain pressure intensity and temperature, be pressed into prefabricating plate once more with specific thicknesses and density, and its one side or the corresponding runner of two-sided extrusion;
4) bipolar plates that will extrude runner is separated with the sheet material of whole prefabricating plate in the step 3), obtains the bipolar plates of moulding;
5) the certain loading of carrying is cured on the bipolar plates of moulding, after the cooling, promptly obtains the bipolar plates product.
2. the manufacturing process of bipolar plate for fuel cell as claimed in claim 1, it is characterized in that: resin is a thermosetting resin in the described step 1), its content is 10～50wt%; The phosphorus content of described expanded graphite is greater than 99%, and expansion multiple is 100～300.
3. the manufacturing process of bipolar plate for fuel cell as claimed in claim 2, it is characterized in that: described resin is epoxy resin, polyacrylic resin, phenolic resins, polyimide resin or fluorocarbon resin; The diameter of toner is 50～80 μ m.
4. the manufacturing process of bipolar plate for fuel cell as claimed in claim 1, it is characterized in that: the prefabricating plate thickness described step 2) is 3～10mm, density is 0.2～1.0g/cm
3
5. the manufacturing process of bipolar plate for fuel cell as claimed in claim 1, it is characterized in that: the pressure in the described step 3) is 10MPa～100MPa, temperature is 100～300 ℃; Prefabricating plate thickness in the step 3) is 1.0～2.0mm, and density is 1.0～2.0g/cm
3
6. the manufacturing process of bipolar plate for fuel cell as claimed in claim 1, it is characterized in that: the runner that suppresses on the prefabricating plate in the described step 3) comprises flow field, seal groove, highway and location hole.
7. the manufacturing process of bipolar plate for fuel cell as claimed in claim 1, it is characterized in that: the pressure of loading is 1～10MPa in the described step 5), and the temperature of curing is 120～250 ℃, and the time of curing is 1-10min.
8. mould that is used to suppress the bipolar plate runner described in the claim 1, it is characterized in that: it comprises groove and ridge, and the drafting angle θ of groove is 5～20 °, and groove depth h is 0.2～1mm; Groove is 0.5: 1～2: 1 with the width ratio of ridge, but its width all should not surpass 2mm.
9. equipment that is used for the described manufacturing process of claim 1, it comprises:
At least one group of oscillating feeder comprises first oscillating feeder and second batcher, is used for respectively expanded graphite and toner being invested in conveyer belt;
Conveyer belt is used to carry the expanded graphite and the resin of mixing;
Roll squeezer, the expanded graphite and the resin that are used for mixing on the conveyer belt are pressed into prefabricating plate;
Moulding press has the described mould that suppresses bipolar plate runner of claim 8, is used for suppressing prefabricating plate once more and extruding corresponding runner;
And curing oven, be used for the bipolar plates of curing molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101209383A CN102208659A (en) | 2011-05-11 | 2011-05-11 | Manufacturing process and device of bipolar plate for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101209383A CN102208659A (en) | 2011-05-11 | 2011-05-11 | Manufacturing process and device of bipolar plate for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102208659A true CN102208659A (en) | 2011-10-05 |
Family
ID=44697382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101209383A Pending CN102208659A (en) | 2011-05-11 | 2011-05-11 | Manufacturing process and device of bipolar plate for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102208659A (en) |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931420A (en) * | 2012-11-01 | 2013-02-13 | 华东理工大学 | Carbon/resin composite material and application thereof |
| CN103117397A (en) * | 2013-02-04 | 2013-05-22 | 昆山弗尔赛能源有限公司 | Manufacturing technique of bipolar plate for fuel battery |
| CN103746122A (en) * | 2013-12-20 | 2014-04-23 | 苏州市万泰真空炉研究所有限公司 | Preparation method of composite material bipolar plates of novel fuel cells |
| CN104497571A (en) * | 2014-12-03 | 2015-04-08 | 同济大学 | Process for preparing expanded graphite/resin compound board |
| CN105264706A (en) * | 2012-10-19 | 2016-01-20 | 奥迪股份公司 | Low cost fuel cell components |
| CN106410235A (en) * | 2016-10-15 | 2017-02-15 | 成都育芽科技有限公司 | Expanded graphite/polyimide composite bipolar plate and preparation method thereof |
| CN106876723A (en) * | 2015-12-10 | 2017-06-20 | 上海神力科技有限公司 | A kind of fuel cell continuous producing method of flexible graphite plate monocell |
| CN107046140A (en) * | 2017-04-06 | 2017-08-15 | 大连融科储能装备有限公司 | A kind of fluorine-containing bipolar plates and preparation method thereof |
| CN108383421A (en) * | 2018-04-03 | 2018-08-10 | 江苏神州碳制品有限公司 | A kind of hot pressing graphite plate producing process |
| CN108550864A (en) * | 2018-04-08 | 2018-09-18 | 广东国鸿氢能科技有限公司 | A kind of fuel battery double plates manufacturing equipment and its method |
| CN108598495A (en) * | 2017-12-28 | 2018-09-28 | 上海神力科技有限公司 | A kind of device and method preparing fuel cell composite dual-electrode plates |
| CN109599574A (en) * | 2018-11-27 | 2019-04-09 | 上海骐杰碳素材料有限公司 | A kind of battery composite material bipolar plates of electric-conductivity heat-conductivity high and preparation method thereof |
| CN109802149A (en) * | 2019-03-19 | 2019-05-24 | 上海神力科技有限公司 | A kind of flexible graphite sheet material inside synusia direction-controlling method |
| CN109910259A (en) * | 2019-01-25 | 2019-06-21 | 上海神力科技有限公司 | Fuel battery pole board forming method based on expanded graphite |
| JP2019181964A (en) * | 2018-04-16 | 2019-10-24 | Ｔｏｗａ株式会社 | Granule supply device, resin molding device, granule supply method and production method of resin molded article |
| CN110828841A (en) * | 2019-11-19 | 2020-02-21 | 深圳市雄韬电源科技股份有限公司 | Fuel cell bipolar plate and preparation method and used equipment thereof |
| TWI694958B (en) * | 2018-04-16 | 2020-06-01 | 日商Ｔｏｗａ股份有限公司 | Powder and granule supply device, resin molding device, powder and granule supply method, and method for manufacturing resin molded product |
| CN111613807A (en) * | 2020-05-20 | 2020-09-01 | 山东魔方新能源科技有限公司 | Fuel cell graphite bipolar plate rolling equipment |
| CN112290040A (en) * | 2020-10-30 | 2021-01-29 | 江苏清能新能源技术股份有限公司 | Preparation method of composite graphite bipolar plate |
| CN112310427A (en) * | 2020-10-30 | 2021-02-02 | 江苏清能新能源技术股份有限公司 | Preparation system of composite graphite bipolar plate |
| CN112563528A (en) * | 2020-12-15 | 2021-03-26 | 广东国鸿氢能科技有限公司 | Preparation method of compression molding bipolar plate |
| CN112993277A (en) * | 2019-12-17 | 2021-06-18 | 上海神力科技有限公司 | Baffle for graphite electrode and dipping device comprising same |
| CN113471462A (en) * | 2021-06-22 | 2021-10-01 | 上海申风投资管理有限公司 | Method for curing graphite bipolar plate of fuel cell |
| CN114094120A (en) * | 2021-11-23 | 2022-02-25 | 成都先进金属材料产业技术研究院股份有限公司 | Integrated graphite electrode for vanadium cell and vanadium cell |
| CN115020733A (en) * | 2022-06-08 | 2022-09-06 | 深圳市氢瑞燃料电池科技有限公司 | Fuel cell composite polar plate and preparation method thereof |
| CN117254053A (en) * | 2023-09-14 | 2023-12-19 | 威海南海碳材料有限公司 | High-conductivity bipolar plate and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090072448A1 (en) * | 2007-09-17 | 2009-03-19 | Jinjun Shi | Continious production of exfoliated graphite composite compositions and flow field plates |
-
2011
- 2011-05-11 CN CN2011101209383A patent/CN102208659A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090072448A1 (en) * | 2007-09-17 | 2009-03-19 | Jinjun Shi | Continious production of exfoliated graphite composite compositions and flow field plates |
Non-Patent Citations (2)
| Title |
|---|
| 刘艳雄: "燃料电池金属双极板软模成形研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 潘朝光: "PEM燃料电池蠕虫石墨/树脂复合双极板的研究", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技Ⅱ辑》 * |
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10651484B2 (en) | 2012-10-19 | 2020-05-12 | Audi Ag | Extruded carbon fuel cell components |
| CN105264706A (en) * | 2012-10-19 | 2016-01-20 | 奥迪股份公司 | Low cost fuel cell components |
| CN102931420B (en) * | 2012-11-01 | 2015-11-25 | 华东理工大学 | Carbon element/resin composite materials and uses thereof |
| CN102931420A (en) * | 2012-11-01 | 2013-02-13 | 华东理工大学 | Carbon/resin composite material and application thereof |
| CN103117397B (en) * | 2013-02-04 | 2015-03-18 | 昆山弗尔赛能源有限公司 | Manufacturing technique of bipolar plate for fuel battery |
| CN103117397A (en) * | 2013-02-04 | 2013-05-22 | 昆山弗尔赛能源有限公司 | Manufacturing technique of bipolar plate for fuel battery |
| CN103746122A (en) * | 2013-12-20 | 2014-04-23 | 苏州市万泰真空炉研究所有限公司 | Preparation method of composite material bipolar plates of novel fuel cells |
| CN104497571A (en) * | 2014-12-03 | 2015-04-08 | 同济大学 | Process for preparing expanded graphite/resin compound board |
| CN106876723A (en) * | 2015-12-10 | 2017-06-20 | 上海神力科技有限公司 | A kind of fuel cell continuous producing method of flexible graphite plate monocell |
| CN106410235A (en) * | 2016-10-15 | 2017-02-15 | 成都育芽科技有限公司 | Expanded graphite/polyimide composite bipolar plate and preparation method thereof |
| CN107046140A (en) * | 2017-04-06 | 2017-08-15 | 大连融科储能装备有限公司 | A kind of fluorine-containing bipolar plates and preparation method thereof |
| CN108598495A (en) * | 2017-12-28 | 2018-09-28 | 上海神力科技有限公司 | A kind of device and method preparing fuel cell composite dual-electrode plates |
| CN108383421A (en) * | 2018-04-03 | 2018-08-10 | 江苏神州碳制品有限公司 | A kind of hot pressing graphite plate producing process |
| CN108550864A (en) * | 2018-04-08 | 2018-09-18 | 广东国鸿氢能科技有限公司 | A kind of fuel battery double plates manufacturing equipment and its method |
| CN108550864B (en) * | 2018-04-08 | 2021-08-03 | 广东国鸿氢能科技有限公司 | Fuel cell bipolar plate manufacturing equipment and method |
| JP2019181964A (en) * | 2018-04-16 | 2019-10-24 | Ｔｏｗａ株式会社 | Granule supply device, resin molding device, granule supply method and production method of resin molded article |
| TWI694958B (en) * | 2018-04-16 | 2020-06-01 | 日商Ｔｏｗａ股份有限公司 | Powder and granule supply device, resin molding device, powder and granule supply method, and method for manufacturing resin molded product |
| CN109599574A (en) * | 2018-11-27 | 2019-04-09 | 上海骐杰碳素材料有限公司 | A kind of battery composite material bipolar plates of electric-conductivity heat-conductivity high and preparation method thereof |
| CN109910259A (en) * | 2019-01-25 | 2019-06-21 | 上海神力科技有限公司 | Fuel battery pole board forming method based on expanded graphite |
| CN109802149A (en) * | 2019-03-19 | 2019-05-24 | 上海神力科技有限公司 | A kind of flexible graphite sheet material inside synusia direction-controlling method |
| CN109802149B (en) * | 2019-03-19 | 2023-07-21 | 上海神力科技有限公司 | Method for controlling direction of internal lamellar sheet of flexible graphite sheet |
| CN110828841A (en) * | 2019-11-19 | 2020-02-21 | 深圳市雄韬电源科技股份有限公司 | Fuel cell bipolar plate and preparation method and used equipment thereof |
| CN112993277A (en) * | 2019-12-17 | 2021-06-18 | 上海神力科技有限公司 | Baffle for graphite electrode and dipping device comprising same |
| CN111613807A (en) * | 2020-05-20 | 2020-09-01 | 山东魔方新能源科技有限公司 | Fuel cell graphite bipolar plate rolling equipment |
| CN111613807B (en) * | 2020-05-20 | 2023-12-15 | 魔方氢能源科技(江苏)有限公司 | Rolling equipment for graphite bipolar plate of fuel cell |
| CN112310427A (en) * | 2020-10-30 | 2021-02-02 | 江苏清能新能源技术股份有限公司 | Preparation system of composite graphite bipolar plate |
| CN112290040A (en) * | 2020-10-30 | 2021-01-29 | 江苏清能新能源技术股份有限公司 | Preparation method of composite graphite bipolar plate |
| CN112563528A (en) * | 2020-12-15 | 2021-03-26 | 广东国鸿氢能科技有限公司 | Preparation method of compression molding bipolar plate |
| CN113471462A (en) * | 2021-06-22 | 2021-10-01 | 上海申风投资管理有限公司 | Method for curing graphite bipolar plate of fuel cell |
| CN114094120A (en) * | 2021-11-23 | 2022-02-25 | 成都先进金属材料产业技术研究院股份有限公司 | Integrated graphite electrode for vanadium cell and vanadium cell |
| CN114094120B (en) * | 2021-11-23 | 2023-10-27 | 成都先进金属材料产业技术研究院股份有限公司 | Integrated graphite electrode for vanadium battery and vanadium battery |
| CN115020733A (en) * | 2022-06-08 | 2022-09-06 | 深圳市氢瑞燃料电池科技有限公司 | Fuel cell composite polar plate and preparation method thereof |
| CN117254053A (en) * | 2023-09-14 | 2023-12-19 | 威海南海碳材料有限公司 | High-conductivity bipolar plate and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102208659A (en) | Manufacturing process and device of bipolar plate for fuel cell | |
| CN103117397B (en) | Manufacturing technique of bipolar plate for fuel battery | |
| US8790846B2 (en) | Gas diffusion layer and process for production thereof, and fuel cell | |
| CN103746131B (en) | A kind of PEM fuel cell composite dual-electrode plates and preparation method thereof | |
| CN111883794A (en) | Layered graphite composite bipolar plate and preparation method thereof | |
| CN101567433B (en) | Fuel cell separator and method for manufacturing same | |
| CN102324492B (en) | Composite conductive electrode and manufacturing method thereof | |
| CN100423925C (en) | Preparation method of macromolecule resin composite bipolar plate for ion exchange membrane fuel battery | |
| CN109910259B (en) | Method for forming fuel cell polar plate based on expanded graphite | |
| CN113224339B (en) | Flexible ultrathin graphite bipolar plate and preparation method thereof | |
| CN101346841A (en) | Separator material for fuel cell and process for producing the same | |
| US20030027030A1 (en) | Fuel-cell separator, production of the same, and fuel cell | |
| CN114824344B (en) | Graphite-resin composite bipolar plate and preparation method and application thereof | |
| CN108321400A (en) | Fuel cell is molded the pairs of production method of bipolar plates | |
| CN112038654B (en) | Preparation method of bipolar plate and bipolar plate | |
| CN102315458A (en) | Production method for graphite bipolar plate of fuel cell | |
| KR101367035B1 (en) | Manufacturing method of composite bipolar plate | |
| CN213845334U (en) | Layered graphite composite bipolar plate and processing system thereof | |
| CN113707900B (en) | Preparation method of composite bipolar plate for fuel cell | |
| CN102683724A (en) | Method for preparing high-conductivity conductive rubber bipolar plate for vanadium redox battery | |
| CN110828841A (en) | Fuel cell bipolar plate and preparation method and used equipment thereof | |
| CN114188552A (en) | Preparation method of benzoxazine molded bipolar plate | |
| GB2386467A (en) | Bipolar plates | |
| CN105633419A (en) | Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor | |
| CN103367764A (en) | Composite conductive electrode and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111005 |