CN102044677A - Conductive bipolar plate of fuel cell - Google Patents
Conductive bipolar plate of fuel cell Download PDFInfo
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- CN102044677A CN102044677A CN2009101781680A CN200910178168A CN102044677A CN 102044677 A CN102044677 A CN 102044677A CN 2009101781680 A CN2009101781680 A CN 2009101781680A CN 200910178168 A CN200910178168 A CN 200910178168A CN 102044677 A CN102044677 A CN 102044677A
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- fuel cell
- bipolar plate
- conductive bipolar
- joint portion
- cell conductive
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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
Abstract
The invention relates to a conductive bipolar plate of a fuel cell. The plate contains a metal plate and a graphite layer, wherein the metal plate has a surface which contains at least one combination part; and the graphite layer is combined with the metal plate through the combination part. Therefore, the conductive bipolar plate has high conductivity and high rigidity and is suitable for the fuel cell to use. Compared with the known technologies, the conductive bipolar plate with the structure has excellent conductivity and can increase the generating efficiency of the fuel cell.
Description
Technical field
The present invention is about a kind of conductive bipolar plate, especially in regard to a kind of conductive bipolar plate of fuel cell.
Background technology
The earth environment pollution problem continues to increase the weight of; the exhausted crisis of oil is extremely urgent; human use problem for the energy has caused international discord again and again; it is tangible or invisible that The flames of war are spreading to each corner in the world; and these miseries are being ordered about scientist and are being sought new forms of energy in a hurry hardy, especially free of contamination alternative energy source.
Fuel cell, have zero pollution, high conversion efficiency and add just advantage such as sustainable use of Hydrogen Energy, expected in the battery of family independent generating, sub-district, building or the standby generating of industry and commerce, various 3C Product and fields such as steam turbine car or coach, to replace the emerging technology of old power resources.A fuel cell mainly is made up of proton exchange membrane, catalyst, gas diffusion layers and conductive bipolar plate, and is wherein the most closely bound up with the generating and the electric delivery efficiency of conductive bipolar plate and fuel cell again.
Being suitable for conductive bipolar plate that fuel cell uses, must to possess conductivity good, anti-oxidant, anticorrosive and can make complicated fine characteristics such as flow passage structure; In satisfying the material of these conditions, be the most general at present with the conductive bipolar plate of use carbon-to-carbon combined type, the industry acceptance is also the highest, yet, this is base material with graphite, adds the made compound carbon plate of 20% to 40% resin again, the understrressing that itself can bear, overall structure is frangible, can't be applied in the environment of vibrations; But if then can cause the conductive bipolar plate unit price too high again in the mode that increases the coat of metal, the manufacturing cost of remote-effects fuel cell.In general,, must form the obstruction of fuel cell, limit the development of this alternative energy source in marketing if can't solve the problem of above-mentioned conductive bipolar plate.
Therefore, how to provide a kind of conductive bipolar plate of fuel cell, it has high conductivity and high rigidity concurrently, and causing the problem of conductive bipolar plate fragmentation when avoiding using in vibration environment is one of current important problem.
Summary of the invention
The conductive bipolar plate that the purpose of this invention is to provide a kind of fuel cell, it has high conductivity and high rigidity concurrently, the problem of conductive bipolar plate fragmentation when avoiding using in vibration environment.
The present invention can realize by the following technical solutions.
The conductive bipolar plate of a kind of fuel cell of the present invention comprises a metallic plate and a graphite linings.Metallic plate has a surface, and has at least one joint portion on this surface.Graphite linings is to combine with metallic plate by the joint portion.
Aforesaid fuel cell conductive bipolar plate, wherein said fuel cell conductive bipolar plate is waveform or concave-convex.
Aforesaid fuel cell conductive bipolar plate, wherein said joint portion are the parts that described metallic plate protrudes in described surface.
Aforesaid fuel cell conductive bipolar plate, at least one side of wherein said joint portion have and described surface between a discontinuous section.
Aforesaid fuel cell conductive bipolar plate, wherein said joint portion are V font, U font, trapezoidal, the shape of a hoof or asterism shape.
Aforesaid fuel cell conductive bipolar plate, wherein said graphite linings contains resin, and described resin content accounts for 0% to 65% of described graphite linings percentage by weight.
By technique scheme, fuel cell conductive bipolar plate of the present invention has following advantage at least:
From the above, because of foundation a kind of fuel cell conductive bipolar plate of the present invention is by on the surface of metallic plate the joint portion being set, graphite linings can firmly be combined with metallic plate, and then produce a kind of double-layer combined conductive bipolar plate that possesses high conductivity and high rigidity, be suitable for providing fuel cell to use.Compare with known technology, the fuel cell conductive bipolar plate made from this kind structure, not only can utilize its excellent electric conductivity, improve the generating efficiency of fuel cell, can also utilize the resist chemical performance of graphite excellence, the sour environment that reduces fuel cell is for the corrosion of metal effect, and this corrosiveness will be disengaged the conducting power of metal cation blocking-up proton exchange membrane to hydrogen ion (proton), causes the impairment of battery life.Can promote life-span of fuel cell with the metal double polar plates of graphite linings protection, help to expand the application category of fuel cell; Moreover this kind fuel cell conductive bipolar plate also can be born collision, the carrying of convenient fuel battery and transportation, and being implemented in still can be with the conception of fuel cell as power resources in the environment of vigorous motion.
Description of drawings
Fig. 1 is the schematic diagram of the fuel cell conductive bipolar plate of the preferred embodiment of the present invention;
Fig. 2 is the generalized section of X-X hatching gained among Fig. 1;
Fig. 3 is the decomposing schematic representation of the fuel cell conductive bipolar plate of Fig. 1; And
Fig. 4 is the end view of fuel cell conductive bipolar plate after punch forming of the preferred embodiment of the present invention.
The main element symbol description:
1: the fuel cell conductive bipolar plate
11: metallic plate
111: the surface
112: the joint portion
12: graphite linings
A: section
X: hatching
Embodiment
Fuel cell conductive bipolar plate of the present invention is to be fit to fuel cell use, particularly Proton Exchange Membrane Fuel Cells.Basic structure according to Proton Exchange Membrane Fuel Cells, mainly form with a slice mea by two briquette fuel battery conductive bipolar plates therebetween, wherein, mea also is the structure that is sandwich style, and it is to include the gas exchange layer that a proton exchange membrane and both sides are pasted; The fuel cell conductive bipolar plate is except that the electronics that is discharged in reaction in order to the collection Proton Exchange Membrane Fuel Cells, the more important thing is, the runner of made on the fuel cell conductive bipolar plate, bearing the required hydrogen of input and water conservancy diversion electric power generation reaction and the function of oxygen, is the key member in the Proton Exchange Membrane Fuel Cells.
Hereinafter with reference to correlative type, a kind of fuel cell conductive bipolar plate according to the preferred embodiment of the present invention is described, wherein identical assembly will be illustrated with identical reference marks.
Please refer to shown in Figure 1ly, fuel cell conductive bipolar plate 1 of the present invention includes a metallic plate 11 and a graphite linings 12.In the present embodiment, metallic plate 11 is Al-alloy metal plates, and certainly, metallic plate 11 also can be the metallic plate 11 of other material or alloy, and is also without particular limitation in the use; As for graphite linings 12 are flexible graphite layers 12, it mainly becomes branch to form by the graphite that does not contain adhesive, this kind flexible graphite layer 12 has splendid conductivity, the combined type carbon plate that the compares conductive component in the battery that is more suitable for acting as a fuel, but, graphite linings 12 also inessentially is made up of the graphite that does not contain adhesive, and can be added into suitable resinous principle in the manufacturing process of graphite linings 12 to scale, and wherein the content of resin can account for about 0% to 65% of graphite linings 12 percentage by weights.
Since joint portion 112 are metallic plates 11 be subjected to punching press action face 111 tear produce, so section A also can regard as joint portion 112 and 11 positions of tearing of metallic plate, and can be according to smooth section A of not being all of stamping technology or coarse section A, please refer to shown in Figure 2, in the present embodiment, section A is a smooth section A.The shape of joint portion 112 then can utilize employed technology of punching press effect and instrument to adjust equally, and can be the various shape that is fit to provide graphite linings 12 combinations, it is such as but not limited to V font, U font, trapezoidal, the shape of a hoof or asterism shape, please refer to shown in Figure 3, in the present embodiment, joint portion 112 is V fonts, the required runner of water conservancy diversion gas is more convenient for planning in the joint portion 112 of this kind shape on fuel cell conductive bipolar plate 1 in the system process of back except that having the characteristic that is easier to produce with impact style.
Please refer to shown in Figure 2, in the present embodiment, fuel cell conductive bipolar plate 1 of the present invention is so that metallic plate 11 is combined with graphite linings 12 by the joint portion 112 on the surface 111 of metallic plate 11, and the mode of both combinations is independently to make earlier the metallic plate 11 with joint portion 112 and full wafer is tabular or the graphite linings 12 of layer structure, again both pressings are formed, make that graphite linings 12 can combined 112 interlock, and then firmly be incorporated into (as shown in Figure 3) on the metallic plate 11.
As previously mentioned, the structure of fuel cell conductive bipolar plate 1 and material must be suitable for making runner thereon, to shoulder the function of input and water conservancy diversion fuel cell power generation reaction desired gas; In view of the above, the for example punch forming of mode of runner is made in use on fuel cell conductive bipolar plate 1, it is to make fuel cell conductive bipolar plate 1 form waveform or concave-convex by the punching press effect, please refer to shown in Figure 4, in the present embodiment, fuel cell conductive bipolar plate 1 is to be made for waveform with punch forming, and the gas flow that the fuel cell conductive bipolar plate 1 of this shape of tool can provide hydrogen or oxygen to be suitable for after making up with mea helps fuel cell to carry out electric power generation reaction; Certainly, using stamping forming mode is for making fuel cell conductive bipolar plate 1 can form required shape, and other mode or the technology that can reach this purpose also can be applied to this, and it is a kind of to be not limited only to punch forming.
In the present embodiment, though fuel cell conductive bipolar plate 1 is the wavy shaped configuration that is full wafer, yet, in another aspect of the present invention, fuel cell conductive bipolar plate 1 also can only be made waveform in the subregion of inside, and that the circumference fractionation that will surround this subregion gives is plane, uses for other design, the gas flow of looking closely fuel cell is required, there is no special requirement or restriction.
For making gas behind the input fuel cell, can produce maximum utilization ratio, the runner of made is a target with the longest gas motion path usually on the fuel cell conductive bipolar plate 1, in view of the above, runner generally is made up of with the secondary fluid course of corresponding number a plurality of sprues, it is a gas flow that is communicated with that secondary fluid course by bending links parallel sprue in twos, whole sight, this runner is to be continuous hairpin-shaped alternative form, and the need special instruction is, in the present embodiment, it is for cooperating the designed result of this kind runner pattern that fuel cell conductive bipolar plate 1 is made corrugated purpose, yet, fuel cell conductive bipolar plate 1 is being made in the corrugated process, graphite linings 12 is but stressed pullling and chipping easily of 112 position in the joint portion, therefore, in the present embodiment, for avoiding graphite linings 12 that above-mentioned cracked situation takes place, so, joint portion 112 is that design is arranged on the surface 111 of metallic plate 11 in the mode that cooperates the runner integral form, please refer to shown in Figure 1, joint portion 112 is preferably to be arranged in like continuous hairpin-shaped mode on the surface 111, certainly, joint portion 112 also can other similar in fact continuous hairpin-shaped form be arranged in surface 111, and this type of form is such as but not limited to N shape, S shape, snakelike and concave-convex etc.; In addition, the more important thing is that in the present embodiment, the direction of 112 courts in joint portion is that offer is parallel with the direction of runner, so can make fuel cell conductive bipolar plate 1 when making waveform, more can keep integrally-built complete.
In sum, because of a kind of fuel cell conductive bipolar plate of the present invention is with firm the combining of metallic plate and graphite linings by the joint portion, improve knownly, and then be combined into a kind of double-layer combined fuel cell conductive bipolar plate of metal-graphite that possesses high conductivity and high rigidity with the compound carbon plate problem that the battery conductive bipolar plate material derived that acts as a fuel.Compare with known technology, this kind fuel cell conductive bipolar plate, not only possesses more excellent electric conductivity, more can utilize the resist chemical performance of graphite excellence, the sour environment that reduces fuel cell is for the corrosion of metal effect, this corrosiveness will be disengaged the conducting power of metal cation blocking-up proton exchange membrane to hydrogen ion (proton), cause the impairment of battery life.Can promote the life-span of fuel cell with the metal double polar plates of graphite linings protection, also be not easy because of colliding or bear big stress chipping, not only can strengthen the ability of collecting electronics with the made fuel cell of this conductive bipolar plate, help to promote generating efficiency, more can be required and with fuel cell is tired when repeatedly using according to application target, raising can be tired out number of fuel cells repeatedly, avoid because the not enough power output that in a disguised form influence fuel cell of fuel cell conductive bipolar plate on material and structural design, in order to do being beneficial to the popularization fuel cell, make this alternative energy source can popularize in other the application; Moreover, the double-layer combined also more known compound carbon plate of fuel cell conductive bipolar plate of this kind metal-graphite is more suitable for using in the environment of vigorous motion, characteristic based on this height rigidity, more make fuel cell conductive bipolar plate of the present invention can avoid the damage that in carrying or transportation, is produced, help to promote the product yield and the cost depletions of attenuating in making process of fuel cell.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be included in accompanying Claim its equivalent modifications of carrying out or change.
Claims (6)
1. a fuel cell conductive bipolar plate is characterized in that, comprising:
One metallic plate has a surface, and has at least one joint portion in described surface; And
One graphite linings combines with described metallic plate by described joint portion.
2. fuel cell conductive bipolar plate according to claim 1 is characterized in that, described fuel cell conductive bipolar plate is waveform or concave-convex.
3. fuel cell conductive bipolar plate according to claim 1 is characterized in that, described joint portion is the part that described metallic plate protrudes in described surface.
4. fuel cell conductive bipolar plate according to claim 3 is characterized in that, at least one side of described joint portion have and described surface between a discontinuous section.
5. fuel cell conductive bipolar plate according to claim 1 is characterized in that, described joint portion is V font, U font, trapezoidal, the shape of a hoof or asterism shape.
6. fuel cell conductive bipolar plate according to claim 1 is characterized in that described graphite linings contains resin, and described resin content accounts for 0% to 65% of described graphite linings percentage by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101781680A CN102044677A (en) | 2009-10-15 | 2009-10-15 | Conductive bipolar plate of fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101781680A CN102044677A (en) | 2009-10-15 | 2009-10-15 | Conductive bipolar plate of fuel cell |
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| CN102044677A true CN102044677A (en) | 2011-05-04 |
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| CN2009101781680A Pending CN102044677A (en) | 2009-10-15 | 2009-10-15 | Conductive bipolar plate of fuel cell |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819137A (en) * | 2016-09-12 | 2018-03-20 | 中国科学院金属研究所 | A kind of soft graphite bipolar plates and preparation method thereof |
| CN109301278A (en) * | 2018-09-26 | 2019-02-01 | 苏州纳磐新材料科技有限公司 | A kind of bipolar plate material and its preparation method and application |
| CN109786779A (en) * | 2019-02-22 | 2019-05-21 | 佛山科学技术学院 | A kind of corrosion resistant metal double polar plates and preparation method thereof |
| CN111384413A (en) * | 2020-04-29 | 2020-07-07 | 上海捷氢科技有限公司 | Fuel cell bipolar plate with metal-graphite composite structure and fuel cell |
| CN111540925A (en) * | 2020-05-07 | 2020-08-14 | 擎能动力科技(苏州)有限公司 | Single fuel cell, fuel cell stack and working mode |
| CN114039057A (en) * | 2021-10-07 | 2022-02-11 | 东莞市阳程智能设备有限公司 | Bipolar plate for hydrogen fuel cell, preparation method of bipolar plate and hydrogen fuel cell |
| CN114079060A (en) * | 2020-08-18 | 2022-02-22 | 未势能源科技有限公司 | Polar plate structure for fuel cell and fuel cell |
| CN114864455A (en) * | 2022-07-07 | 2022-08-05 | 江苏丰源电子科技有限公司 | Solid crystal equipment for electronic element production and use method thereof |
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| US4729162A (en) * | 1986-06-11 | 1988-03-08 | Duracell Inc. | Electrochemical cell asssembly |
| CN2429919Y (en) * | 2000-06-05 | 2001-05-09 | ***电子第十八研究所 | Bipolarity plate for inlaid structure of proton exchanging membrane fuel cells |
| CN1454399A (en) * | 2000-04-10 | 2003-11-05 | 格拉弗技术公司 | Flexible graphite article and fuel cell electrode with enhanced electrical and thermal conductivity |
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2009
- 2009-10-15 CN CN2009101781680A patent/CN102044677A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4729162A (en) * | 1986-06-11 | 1988-03-08 | Duracell Inc. | Electrochemical cell asssembly |
| CN1454399A (en) * | 2000-04-10 | 2003-11-05 | 格拉弗技术公司 | Flexible graphite article and fuel cell electrode with enhanced electrical and thermal conductivity |
| CN2429919Y (en) * | 2000-06-05 | 2001-05-09 | ***电子第十八研究所 | Bipolarity plate for inlaid structure of proton exchanging membrane fuel cells |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107819137A (en) * | 2016-09-12 | 2018-03-20 | 中国科学院金属研究所 | A kind of soft graphite bipolar plates and preparation method thereof |
| CN109301278A (en) * | 2018-09-26 | 2019-02-01 | 苏州纳磐新材料科技有限公司 | A kind of bipolar plate material and its preparation method and application |
| CN109786779A (en) * | 2019-02-22 | 2019-05-21 | 佛山科学技术学院 | A kind of corrosion resistant metal double polar plates and preparation method thereof |
| CN111384413A (en) * | 2020-04-29 | 2020-07-07 | 上海捷氢科技有限公司 | Fuel cell bipolar plate with metal-graphite composite structure and fuel cell |
| CN111384413B (en) * | 2020-04-29 | 2021-09-10 | 上海捷氢科技有限公司 | Fuel cell bipolar plate with metal-graphite composite structure and fuel cell |
| CN111540925A (en) * | 2020-05-07 | 2020-08-14 | 擎能动力科技(苏州)有限公司 | Single fuel cell, fuel cell stack and working mode |
| CN114079060A (en) * | 2020-08-18 | 2022-02-22 | 未势能源科技有限公司 | Polar plate structure for fuel cell and fuel cell |
| CN114039057A (en) * | 2021-10-07 | 2022-02-11 | 东莞市阳程智能设备有限公司 | Bipolar plate for hydrogen fuel cell, preparation method of bipolar plate and hydrogen fuel cell |
| CN114864455A (en) * | 2022-07-07 | 2022-08-05 | 江苏丰源电子科技有限公司 | Solid crystal equipment for electronic element production and use method thereof |
| CN114864455B (en) * | 2022-07-07 | 2022-09-09 | 江苏丰源电子科技有限公司 | Solid crystal equipment for electronic element production and use method thereof |
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Application publication date: 20110504 |