CN105633419A - Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor - Google Patents
Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor Download PDFInfo
- Publication number
- CN105633419A CN105633419A CN201610138215.9A CN201610138215A CN105633419A CN 105633419 A CN105633419 A CN 105633419A CN 201610138215 A CN201610138215 A CN 201610138215A CN 105633419 A CN105633419 A CN 105633419A
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- Prior art keywords
- bipolar plates
- parts
- hydrogen fuel
- fuel cell
- cell group
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- 239000000446 fuel Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 20
- 239000001257 hydrogen Substances 0.000 title claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims description 27
- 239000000428 dust Substances 0.000 claims description 12
- 229920003987 resole Polymers 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 6
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 5
- 239000004917 carbon fiber Substances 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000005011 phenolic resin Substances 0.000 abstract 1
- 229920001568 phenolic resin Polymers 0.000 abstract 1
- 238000000034 method Methods 0.000 description 15
- 229910002804 graphite Inorganic materials 0.000 description 10
- 239000010439 graphite Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000002184 metal Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 230000003245 working 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
-
- 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
-
- 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
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a bipolar plate used for a hydrogen fuel battery pack and a manufacturing process therefor. According to the main scheme, the bipolar plate used for the hydrogen fuel battery pack comprises the following ingredients in parts by weight: 5-50 parts of phenolic resin, 30-60 parts of carbon powder and 2-10 parts of releasing agent. Compared with the prior art, a carbon fiber material is not added to the carbon-based composite material bipolar plate, so that the continuous production of the bipolar plate can be realized by adopting an injection molding process; and meanwhile, the injection molding process has the advantages of short manufacturing period, low operation difficulty, low cost and high production speed, so that the bipolar plate is quite suitable for popularization and application.
Description
Technical field
The present invention relates to a kind of bipolar plates for hydrogen fuel cell group and manufacture craft thereof.
Background technology
Methanol fuel cell uses methyl alcohol directly as raw material, as a proton exchanging film fuel battery, it is necessary to use a kind of conductive separator plate, to support, to collect stream, to separate oxygenant and reductive agent, and guiding Oxidizing and Reducing Agents electrode surface flowing in battery, this kind of conductive separator plate is called bipolar plates. Bipolar plate flow field structure is complicated, and difficulty of processing is big, and to material performance requirement height, the performance of material is lower, and fuel cell can be caused to occur, and serviceability is unstable, the problem that efficiency is not high.
The present research for bipolar plates has comprised metal sheet, pure graphite cake and composite panel three major types. Wherein, metal sheet has good electrical and thermal conductivity, is thinned to 0.1mm also air tight, and gas flow can impact briquetting, be easy to realize mass production, this is conducive to the lifting of volumetric specific power and the decline of manufacturing cost. But, the forming mould accuracy requirement height of metal double polar plates, cost is also high; Must to metal base, especially surface carries out special processing to improve its chemical stability, otherwise easily occurs that corrosion of metal sheet even becomes rusty and wear, and causes shorten the work-ing life of battery and calamitous destruction even occurs.
Although also having now pure graphite cake to have good electrical and thermal conductivity, chemical stability, pure graphite cake generally adopts traditional machine-tooled method processing flow channel, and runner just can not too narrow (such as can not lower than 0.7mm). Because if runner is narrow, the size error caused by the abrasion of process tool in the course of processing can not be tolerated; In addition, machining process is consuming time also very long, and production efficiency is not high, and these all cause the tooling cost of bipolar plates higher, even exceed material cost; On the other hand, pure graphite cake is crisp, the existence of its internal void causes it easily to leak gas, certain thickness must be kept to ensure its resistance to air loss, this just constrains pile volumetric specific power and the lifting of weight ratio power, so seeking better manufacture craft and method, it it is the only way which must be passed of commercializing fuel cells.
For various types of matrix materials of the 3rd class, in prior art such as application number be 201110120938.3 patent provide a kind of scheme: the manufacturing process of a kind of bipolar plate for fuel cell and equipment, this technique it comprise expanded graphite and toner be dry mixed; The compound of expanded graphite and resin is pressed into prefabricating plate; Again suppress, and at its one side or the corresponding runner of two-sided extrusion; The bipolar plates prefabricating plate separation of runner will be extruded, obtain shaping bipolar plates; Shaping bipolar plates is solidified cooling and obtains bipolar plates product. This equipment comprises at least one group of oscillating feeder, for respectively expanded graphite and toner being invested in travelling belt; Travelling belt, for carrying expanded graphite and the resin of mixing; Roll squeezer, for being pressed into prefabricating plate by mixture on travelling belt; Moulding press, for again suppressing prefabricating plate and extrude corresponding runner and curing oven, for the bipolar plates of curing molding. Moulding press comprises the mould of compacting bipolar plate runner. Expanded graphite/resin composite bipolar plate of the present invention excellent property in specific conductivity, air barrier rate and physical strength etc., and cheap.
And China Patent No. is that the patent of invention of ZL201310043424.1 provides a kind of scheme: it utilizes expanded graphite for carbon-based material, toner is caking agent, carbon black or carbon fiber is added in prepared by matrix material, increasing specific conductivity, carbon fiber merges can produce good flexural strength into composite dual-electrode plates. One can be prepared through rational compound like this and possess good corrosion resistance, electrical and thermal conductivity, gas barrier property and physical strength, fuel cell double polar plate with low cost. Because containing carbon fiber in raw material in such scheme, Problems existing is that raw material is through heating to molten state, raw material there is high viscosity property and mobility not good, cause utilizing injection molding technique production bipolar plates, die press technology for forming can only be adopted to produce, because the whole making shaping cycle of die press technology for forming is longer, and production efficiency is low, it is very difficult to realize producing continuously.
Summary of the invention
For the deficiency that prior art exists, the main purpose of the present invention is to provide the C-base composte material bipolar plates of not carbon fiber-containing in a kind of composition and adopts injection molding technique to realize the manufacture craft of continuous production bipolar plates.
For achieving the above object, the present invention provides following technical scheme, a kind of bipolar plates for hydrogen fuel cell group, with weight parts, composed of the following components, resol: 5 ~ 50 parts; Carbon dust: 30 ~ 60 parts; Releasing agent: 2 ~ 10 parts.
Preferably, with weight parts, described resol is 10 ~ 45 parts.
Preferably, with weight parts, described carbon dust is 35 ~ 58 parts.
Preferably, with weight parts, described releasing agent is 5 ~ 8 parts.
For a manufacture craft for the bipolar plates of hydrogen fuel cell group, (1): utilize twin screw extruder to be undertaken mixing by pulverous resol, carbon dust and releasing agent and be processed into the raw material to be processed of particulate state; (2): heating raw material to be processed obtained in (1) to 280 DEG C ~ 350 DEG C, raw material to be processed is molten state; : be expelled in product mold by the raw material to be processed of molten state obtained to (2) by injector, after cooling, carry out die sinking, (3) C-base composte material bipolar plates is finally obtained.
Preferably, the injection rate of described injector is 50 ~ 63mm/s.
Preferably, the dwell pressure of described injector is 125 ~ 157Mpa.
Preferably, the cast gate of described injector is fan gate.
Preferably, the temperature of described product mold is 200 ~ 218 DEG C.
The present invention has the following advantages relative to prior art tool, compare prior art, C-base composte material bipolar plates provided by the invention does not add carbon fibre material in component, the benefit arranged like this can realize adopting injection molding technique to carry out the continuous production of bipolar plates, injection molding technique has the advantage that fabrication cycle is short, operation easier is low, cost is low, throughput rate is fast, very is applicable to applying.
Embodiment
For a bipolar plates for hydrogen fuel cell group, with weight parts, composed of the following components, resol: 5 ~ 50 parts; Carbon dust: 30 ~ 60 parts; Releasing agent: 2 ~ 10 parts. Compare prior art, C-base composte material bipolar plates provided by the invention does not add carbon fibre material in component, the benefit arranged like this can realize adopting injection molding technique to carry out the continuous production of bipolar plates, because carbon fibre material has very high viscosity in the molten state, injection molding technique cannot be adopted to produce. The C-base composte material bipolar plates simultaneously utilizing component provided by the invention to make has good solidity to corrosion, electrical and thermal conductivity, gas barrier property and physical strength, it is possible to meet the service requirements of hydrogen fuel cell group.
Above-mentioned each component carries out process for processing especially by following step: (1): utilize twin screw extruder to be undertaken mixing by pulverous resol, carbon dust and releasing agent and be processed into the raw material to be processed of particulate state;
(2): heating raw material to be processed obtained in (1) to 280 DEG C ~ 350 DEG C, raw material to be processed is molten state;
: be expelled in product mold by the raw material to be processed of molten state obtained to (2) by injector, after cooling, carry out die sinking, (3) C-base composte material bipolar plates is finally obtained.
The method of the bipolar plates adopting mould pressing process to produce C-base composte material of comparing, injection molding technique has the advantage that fabrication cycle is short, operation easier is low, cost is low, throughput rate is fast, very is applicable to applying. This production technique is further improved and optimizes, wherein the cast gate of injector adopts fan gate, the mobility of the raw material to be processed that can provide molten state is set like this, the injection rate of injector is 50 ~ 63mm/s and dwell pressure in addition is 125 ~ 157Mpa, being reached a conclusion by practice, arranging like this can so that the raw material to be processed of molten state can enter in product mold smoothly. In addition, the temperature of product mold is preset as 200 ~ 218 DEG C so that the raw material to be processed of molten state enter can be good after in mould shaping.
Embodiment one: a kind of bipolar plates for hydrogen fuel cell group, with weight parts, composed of the following components, resol: 45 parts; Carbon dust: 50 parts; Releasing agent: 5 parts.
Manufacture craft is: (1): utilize twin screw extruder to be undertaken mixing by pulverous resol 4.5kg, carbon dust 5kg and releasing agent 0.5kg and be processed into the raw material to be processed of particulate state; (2): heating raw material to be processed obtained in (1) to 320 DEG C, raw material to be processed is molten state; : be expelled in product mold by the raw material to be processed of molten state obtained to (2) by injector, after cooling, carry out die sinking, (3) C-base composte material bipolar plates is finally obtained.
Wherein, the injection rate of injector is 58mm/s, and the dwell pressure of injector is 145Mpa, and the temperature of product mold is 200 DEG C, and the cast gate of injector is fan gate.
Obtained C-base composte material bipolar plates performance perameter is as follows: heat-drawn wire is 220 DEG C, and thermal conductivity is 21W/mK, and flexural strength is 56MPa, functional.
Embodiment two: a kind of bipolar plates for hydrogen fuel cell group, with weight parts, composed of the following components, resol: 35 parts; Carbon dust: 58 parts; Releasing agent: 7 parts.
Manufacture craft is: (1): utilize twin screw extruder to be undertaken mixing by pulverous resol 3.5kg, carbon dust 5.8kg and releasing agent 0.7kg and be processed into the raw material to be processed of particulate state; (2): heating raw material to be processed obtained in (1) to 335 DEG C, raw material to be processed is molten state; : be expelled in product mold by the raw material to be processed of molten state obtained to (2) by injector, after cooling, carry out die sinking, (3) C-base composte material bipolar plates is finally obtained.
Wherein, the injection rate of injector is 55mm/s, and the dwell pressure of injector is 140Mpa, and the temperature of product mold is 215 DEG C, and the cast gate of injector is fan gate.
Obtained C-base composte material bipolar plates performance perameter is as follows: heat-drawn wire is 215 DEG C, and thermal conductivity is 22W/mK, and flexural strength is 54MPa, functional.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonged under thinking of the present invention all belong to protection scope of the present invention. It is noted that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the bipolar plates for hydrogen fuel cell group, it is characterised in that: with weight parts, composed of the following components,
Resol: 5 ~ 50 parts;
Carbon dust: 30 ~ 60 parts;
Releasing agent: 2 ~ 10 parts.
2. a kind of bipolar plates for hydrogen fuel cell group according to claim 1, it is characterised in that: with weight parts, described resol is 10 ~ 45 parts.
3. a kind of bipolar plates for hydrogen fuel cell group according to claim 1, it is characterised in that: with weight parts, described carbon dust is 35 ~ 58 parts.
4. a kind of bipolar plates for hydrogen fuel cell group according to claim 1, it is characterised in that: with weight parts, described releasing agent is 5 ~ 8 parts.
5. one kind makes the manufacture craft such as the bipolar plates for hydrogen fuel cell group as described in any claim in Claims 1-4, it is characterised in that:
(1): utilize twin screw extruder to be undertaken mixing by pulverous resol, carbon dust and releasing agent and be processed into the raw material to be processed of particulate state;
(2): heating raw material to be processed obtained in (1) to 280 DEG C ~ 350 DEG C, raw material to be processed is molten state;
: be expelled in product mold by the raw material to be processed of molten state obtained to (2) by injector, after cooling, carry out die sinking, (3) C-base composte material bipolar plates is finally obtained.
6. the manufacture craft of a kind of bipolar plates for hydrogen fuel cell group according to claim 5, it is characterised in that: the injection rate of described injector is 50 ~ 63mm/s.
7. the manufacture craft of a kind of bipolar plates for hydrogen fuel cell group according to claim 5, it is characterised in that: the dwell pressure of described injector is 125 ~ 157Mpa.
8. the manufacture craft of a kind of bipolar plates for hydrogen fuel cell group according to claim 5, it is characterised in that: the cast gate of described injector is fan gate.
9. the manufacture craft of a kind of bipolar plates for hydrogen fuel cell group according to claim 5, it is characterised in that: the temperature of described product mold is 200 ~ 218 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138215.9A CN105633419A (en) | 2016-03-11 | 2016-03-11 | Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610138215.9A CN105633419A (en) | 2016-03-11 | 2016-03-11 | Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105633419A true CN105633419A (en) | 2016-06-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610138215.9A Pending CN105633419A (en) | 2016-03-11 | 2016-03-11 | Bipolar plate used for hydrogen fuel battery pack and manufacturing process therefor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105633419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119641A (en) * | 2018-09-07 | 2019-01-01 | 米库玻璃纤维增强塑料泰州有限责任公司 | A kind of conductive plastic bi-polar plate manufacturing process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282349A (en) * | 1997-10-14 | 2001-01-31 | 赛特技术有限公司 | Conductive thermoset molding composition and method for producing same |
| US20070111078A1 (en) * | 2005-11-11 | 2007-05-17 | Nisshinbo Industries, Inc. | Fuel cell bipolar plate |
| CN102544525A (en) * | 2012-01-11 | 2012-07-04 | 南通大学 | Method for injection molding of composite bipolar plate of proton exchange membrane fuel cell |
-
2016
- 2016-03-11 CN CN201610138215.9A patent/CN105633419A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282349A (en) * | 1997-10-14 | 2001-01-31 | 赛特技术有限公司 | Conductive thermoset molding composition and method for producing same |
| US20070111078A1 (en) * | 2005-11-11 | 2007-05-17 | Nisshinbo Industries, Inc. | Fuel cell bipolar plate |
| CN102544525A (en) * | 2012-01-11 | 2012-07-04 | 南通大学 | Method for injection molding of composite bipolar plate of proton exchange membrane fuel cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119641A (en) * | 2018-09-07 | 2019-01-01 | 米库玻璃纤维增强塑料泰州有限责任公司 | A kind of conductive plastic bi-polar plate manufacturing process |
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Application publication date: 20160601 |