CN202384431U - Integrated combined electrode double-pole plate - Google Patents
Integrated combined electrode double-pole plate Download PDFInfo
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- CN202384431U CN202384431U CN2011205741933U CN201120574193U CN202384431U CN 202384431 U CN202384431 U CN 202384431U CN 2011205741933 U CN2011205741933 U CN 2011205741933U CN 201120574193 U CN201120574193 U CN 201120574193U CN 202384431 U CN202384431 U CN 202384431U
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 133
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 81
- 239000010439 graphite Substances 0.000 claims abstract description 81
- 239000002985 plastic film Substances 0.000 claims abstract description 52
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 45
- 229920003023 plastic Polymers 0.000 abstract description 15
- 239000004033 plastic Substances 0.000 abstract description 15
- 239000003792 electrolyte Substances 0.000 abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 abstract description 6
- 238000004146 energy storage Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000003763 carbonization Methods 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 239000004698 Polyethylene Substances 0.000 description 27
- 239000007788 liquid Substances 0.000 description 12
- 229920001169 thermoplastic Polymers 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 11
- 230000003647 oxidation Effects 0.000 description 11
- 238000007254 oxidation reaction Methods 0.000 description 11
- 229920000426 Microplastic Polymers 0.000 description 9
- 239000006229 carbon black Substances 0.000 description 8
- 238000001192 hot extrusion Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000001816 cooling Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 208000032953 Device battery issue Diseases 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000767 polyaniline Polymers 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000011231 conductive filler Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000006183 anode active material Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 210000003339 pole cell Anatomy 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses an integrated combined electrode double-pole plate and a preparation method and application thereof. The integrated combined electrode double-pole plate consists of graphite felt/carbon felt and a plastic sheet which are integrated, wherein the plastic sheet is embedded between two pieces of graphite felt/carbon felt, and the length axis and the width axis of the plastic sheet are both larger than those of the graphite felt/carbon felt. The integrated combined electrode double-pole plate can obviously reduce resistance generated by an existing graphite felt/carbon felt and the double-pole plate which are pressed tightly and contacted with each other. The integrated combined electrode double-pole plate uses the graphite felt/carbon felt as a conducting basic body, the conducting performance is improved remarkably, a phenomenon that a conducting chain breaks occurs infrequently, the mechanical performance is good, the machining is easy, the double-pole plate can be bent but is not easy to deform, the airtight performance is good, and battery electrolyte mixing is not caused. By means of the integrated combined electrode double-pole plate, the discharging medium voltage and the energy efficiency of an all-vanadium redox flow energy-storage battery and the service life of the battery can be improved, and structural damage and plastic carbonization and decomposition of the graphite felt/carbon felt are not caused.
Description
Technical field
The utility model belongs to the oxidation deoxidization liquid energy-storing battery technical field, is specifically related to integrated combination electrode bipolar plates that a kind of oxidation deoxidization liquid energy-storing battery uses and preparation method thereof and application.
Background technology
Electric energy is the modern society human lives, producing must obligato secondary energy sources, and along with socio-economic development and the people's living standard improves constantly, people are to electricity needs also increase day by day.Because electricity needs round the clock, differ greatly season, but the construction in power plant must be complementary with the peak electricity consumption, and it is lower to invest big utilance, and the environment and the ecological balance of periphery had bigger influence.Because of a little, constantly all kinds of power stations of development and electrical power trans mission/distribution system are to satisfy life and to produce the demand to electric power, and for making full use of all kinds of electricity generation systems and realizing stable power-supplying, the extensive efficient electric power storage technology of exploitation is very important.The application of extensive efficient flow accumulating system at first is and the supporting use of renewable energy systems such as wind energy, solar energy to make its stable power-supplying; Next is the peak load regulation network of thermal power generation and nuclear power, is particularly suitable for the direct current large electricity consumer and stores " paddy "; The emergency power supply that also can be used as the unusual time such as natural calamity, war, the stand-by station in important military base.
Oxidation deoxidization liquid energy-storing battery is compared with other chemical energy-storage batteries and is had lot of advantages, specifically has: the battery high life, and power and capacity can be by demand independent assortments and separate, and deep discharge can not damage battery.Oxidation deoxidization liquid energy-storing battery is a kind of novel electronation energy-storage battery; With the difference Jie's attitude metal ion in the electrolyte as anode and negative electrode active material; The electrolyte separate storage of positive pole and negative pole; Through electric pump with anodal electrolyte and negative pole cell liquor pump go into accomplish redox reaction in the battery graphite felt after, flow back in the reservoir vessel.From the operation principle of oxidation deoxidization liquid energy-storing battery, oxidation deoxidization liquid energy-storing battery possesses the advantage of extensive efficient electric power storage.
Operation principle according to oxidation deoxidization liquid energy-storing battery; Bipolar plates and graphite felt are the very important critical materials of oxidation deoxidization liquid energy-storing battery; The effect of bipolar plates is to completely cut off both positive and negative polarity electrolyte conduction current simultaneously, and graphite felt or carbon felt are in the vanadium redox energy-storage battery, to have better electrochemical activation and invertibity.Because electrolyte is strong acid and strong oxidizing property solution, therefore, bipolar plates and graphite felt will have fabulous conductivity and corrosion resistance, and the conductivity that bipolar plates should existing graphite cake also has the soft flexible of plastics; And very corrosion-resistant, in charge and discharge process, can not produce any electrochemical corrosion with electrolyte, can not produce the problem of any string liquid, leakage.The bipolar plates that present vanadium redox battery is used mainly contains: graphite bi-polar plate, conductive plastic bi-polar plate and integrated combination electrode bipolar plates.
The connected mode of graphite bi-polar plate and graphite felt is by the mode that is pressed together, and also is easy to separate even if can be bonded as one, and graphite bi-polar plate and graphite felt are under the same pressure of electric pump; Will form contact slot and having a resistance; Battery is after charge and discharge cycles after a while, and the phenomenon that is corroded appears in the graphite cake positive pole, spreads polyaniline in the graphite cake surfaces coated; Can prevent that being corroded from appearring in graphite cake; But as a whole because polyaniline and graphite cake can not fuse, after charge and discharge cycles after a while, polyaniline coating can be held, peel off with the graphite cake surface isolation; Resistance is increasing between graphite bi-polar plate and the graphite felt, and machinery can appear in graphite cake disintegrates and cause battery failure; In addition, graphite cake processing is extremely complicated to be difficult to do big size, and working (machining) efficiency very low price is extremely expensive again.
The connected mode of conductive plastic bi-polar plate and graphite felt is the mode by being pressed together; Also be easy to separate even if can be bonded as one, the main conductive filler of conductive plastic bi-polar plate is conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite, after conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite join in the thermoplastic polymer; Each conduction one's share of expenses for a joint undertaking between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite is to be bonded together by thermoplastic polymer; And thermoplastic polymer is nonconducting material, and therefore, battery is after charge and discharge cycles after a while; Phenomenon of rupture can appear between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite; Resistance is increasing between graphite bi-polar plate and the graphite felt, and bubbling can appear in conductive plastic bi-polar plate, by the galvano-cautery phenomenon, and causes battery failure.
One Chinese patent application 200810304837 discloses a kind of combination electrode for all vanadium redox flow battery; Being mainly combination electrode is to be joined by three kinds of conductive fillers (conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite) to prepare the thermoplastic conductive plate in the thermoplastic polymer; The thermoplastic conductive plate is composited with graphite felt hot pressing again; Partially conductive carbon fiber in the graphite felt embeds conductive plate surface, forms the conductive network of IPN, thereby has improved the whole electric conductivity of product.Above-mentioned this combination electrode for all vanadium redox flow battery major defect is: after conductive acetylene carbon black, conductive carbon fibres peacekeeping graphite join in the thermoplastic polymer; Each conduction one's share of expenses for a joint undertaking between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite is to be bonded together by thermoplastic polymer; And thermoplastic polymer is nonconducting material; In addition, because the thermoplastic polymer content in the middle of the thermoplastic conductive plate is less, just binding is less; The also insecure instability of the combined electrode structure that thermoplastic conductive plate and graphite felt hot pressing are composited; Battery phenomenon of rupture can occur between conductive acetylene carbon black, the conductive carbon fibres peacekeeping graphite after charge and discharge cycles after a while, conductive plastic bi-polar plate can occur by the galvano-cautery phenomenon; Resistance is increasing between conductive plastic bi-polar plate and the graphite felt, and conductive plastic bi-polar plate can occur being caused battery failure by galvano-cautery.
Summary of the invention
For fear of the contact resistance between graphite felt or carbon felt and the bipolar plates, and overcome that fracture appears in the non-metal kind electrode in the battery use and the defective that has a resistance and increase, the purpose of the utility model is to provide a kind of integrated combination electrode bipolar plates.
The purpose of the utility model realizes through following technical proposals:
A kind of integrated combination electrode bipolar plates is made up of incorporate graphite felt/carbon felt and plastic sheet, and plastic sheet is embedded in the middle of two graphite felt/carbon felt, and the major axis of plastic sheet and wide axle are all greater than the major axis of graphite felt/carbon felt and wide.
The preparation method of above-mentioned integrated combination electrode bipolar plates; Be through adding the plastic sheet that hot extrusion forms softening shape with plastic pellet; Again plastic sheet is placed between two graphite felt/carbon felt, closes tight mould, add hot extrusion; Plastic sheet dissolves in graphite felt/carbon felt, makes integrated combination electrode bipolar plates after the cooling.
Above-mentioned preparation method specifically may further comprise the steps:
(1) to carrying out electrochemistry resistance utmost point oxidation processes or acid treatment behind graphite felt/carbon felt cleaning, drying; Plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two graphite felt/carbon felt is placed on respectively, B plate inboard are placed on plastic sheet between two graphite felt/carbon felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould/carbon felt and plastic sheet were handled 6-100 minute at 160-260 ℃ of following constant temperature; During this time also through the extruder extrusion die; Handle the back plastic sheet and all dissolve in graphite felt/carbon felt, make integrated combination electrode bipolar plates after the cooling.
The preferred PE of described plastic pellet (polyethylene) plastic pellet.
Above-mentioned integrated combination electrode bipolar plates can be applicable in the oxidation deoxidization liquid energy-storing battery.
The utility model has following advantage and effect with respect to prior art:
1, the integrated combination electrode bipolar plates of the utility model can obviously reduce existing graphite felt/carbon felt and bipolar plates by compressing the resistance that the way of contact produces.
2, the integrated combination electrode bipolar plates of the utility model is that to lean on graphite felt/carbon felt be conducting base, and electric conductivity significantly improves, and rarer conductive chain phenomenon of rupture takes place; Satisfactory mechanical property; Machine work is easy, and is flexible not yielding, and air-tightness well can not produce battery strings liquid phenomenon.
3, the integrated combination electrode bipolar plates that adopts the utility model method to be prepared into can improve the useful life of pressure, energy efficiency and battery in the discharge of full vanadium oxidation liquid flow energy storage battery, can not cause the structural failure and the plastics carbonization decomposition of graphite felt or carbon felt.
4, the integrated combination electrode bipolar plates preparation technology of the utility model is simple, and electric conductivity one is put, and produces easily, and not yielding, product qualified rate is high, and product qualified rate can reach more than 98%, has fine practicality and application prospect.
Description of drawings
Fig. 1 is the structural representation of a kind of integrated combination electrode bipolar plates of the utility model; Wherein, 1-plastic sheet, 2-graphite felt/carbon felt, 3-mould A plate, 4-mould B plate.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but the execution mode of the utility model is not limited thereto.
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick graphite felt of 5mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two graphite felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould and PE plastic sheet were handled 75-100 minute at 160-170 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the graphite felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and graphite felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two graphite felt 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick carbon felts of 6mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two carbon felts, close tight mould then;
(3) mould inside is vacuumized;
(4) the carbon felt in mould and the mould and PE plastic sheet were handled 55-70 minute at 180-190 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the carbon felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and carbon felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two carbon felts 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick graphite felt of 7mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two graphite felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould and PE plastic sheet were handled 40-50 minute at 200-210 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the graphite felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and graphite felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two graphite felt 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick carbon felts of 8mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two carbon felts, close tight mould then;
(3) mould inside is vacuumized;
(4) the carbon felt in mould and the mould and PE plastic sheet were handled 25-35 minute at 220-240 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the carbon felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and carbon felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two carbon felts 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
Embodiment 5
A kind of integrated combination electrode bipolar plates is prepared by following method:
(1) the PE plastic pellet is formed the plastic sheet that softens shape through adding hot extrusion;
(2) the mould A that two thick graphite felt of 10mm is placed on respectively, B plate inboard are placed on the PE plastic sheet between two graphite felt, close tight mould then;
(3) mould inside is vacuumized;
(4) graphite felt in mould and the mould and PE plastic sheet were handled 6-20 minute at 250-260 ℃ of following constant temperature, during and through the extruder extrusion die, handle back PE plastic sheet and all dissolve in the graphite felt, make integrated combination electrode bipolar plates after the cooling.
The structure of prepared integrated combination electrode bipolar plates is as shown in Figure 1, and graphite felt 2 is integral with PE plastic sheet 1 extrusion molten, and plastic sheet 1 is embedded in the middle of two graphite felt 2, and the major axis of plastic sheet 1 and wide axle are all greater than the major axis of graphite felt 2 and wide.
The battery of the integrated combination electrode bipolar plates assembling that makes with embodiment 3, its charge-discharge performance is as shown in table 1.With the battery of conductive plastic bi-polar plate assembling, its charge-discharge performance is as shown in table 2.
The battery of the integrated combination electrode bipolar plates assembling of table 1 is at current density 50mA/cm
2Under charge-discharge performance
The battery of table 2 conductive plastic bi-polar plate assembling is at current density 50mA/cm
2Under charge-discharge performance
Can find out from table 1 and table 2; Adopt the battery of the integrated combination electrode bipolar plates assembling of the utility model all to be significantly improved than pressure, current efficiency, voltage efficiency, energy efficiency, electrolyte utilance in the discharge of the battery of conductive plastic bi-polar plate assembling; More importantly be: the battery with integrated combination electrode bipolar plates assembling can use highly stablely, and battery is significantly promoted useful life; And the battery of conductive plastic bi-polar plate assembling is after charge and discharge cycles after a while, and battery performance significantly reduces, and explains that through contrast test the performance of the each side of integrated combination electrode bipolar plates all is superior to conductive plastic bi-polar plate.
The foregoing description is the utility model preferred implementation; But the execution mode of the utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of the utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection range of the utility model.
Claims (1)
1. integrated combination electrode bipolar plates, it is characterized in that: be made up of incorporate graphite felt/carbon felt and plastic sheet, plastic sheet is embedded in the middle of two graphite felt/carbon felt, and the major axis of plastic sheet and wide axle are all greater than the major axis of graphite felt/carbon felt and wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205741933U CN202384431U (en) | 2011-12-30 | 2011-12-30 | Integrated combined electrode double-pole plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205741933U CN202384431U (en) | 2011-12-30 | 2011-12-30 | Integrated combined electrode double-pole plate |
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| CN202384431U true CN202384431U (en) | 2012-08-15 |
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| CN2011205741933U Expired - Fee Related CN202384431U (en) | 2011-12-30 | 2011-12-30 | Integrated combined electrode double-pole plate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109839232A (en) * | 2019-01-25 | 2019-06-04 | 上海交通大学 | Strain transducer and forming method thereof, strain transducer array and forming method thereof |
| CN110875483A (en) * | 2018-09-04 | 2020-03-10 | 大连融科储能装备有限公司 | Integrated electrode-bipolar plate structure and preparation method |
| CN112467162A (en) * | 2019-09-06 | 2021-03-09 | 杭州中科氢能科技有限公司 | Bipolar plate, bipolar plate processing device and bipolar plate preparation method |
-
2011
- 2011-12-30 CN CN2011205741933U patent/CN202384431U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110875483A (en) * | 2018-09-04 | 2020-03-10 | 大连融科储能装备有限公司 | Integrated electrode-bipolar plate structure and preparation method |
| CN109839232A (en) * | 2019-01-25 | 2019-06-04 | 上海交通大学 | Strain transducer and forming method thereof, strain transducer array and forming method thereof |
| CN109839232B (en) * | 2019-01-25 | 2021-11-05 | 上海交通大学 | Strain sensor and forming method thereof, strain sensor array and forming method thereof |
| CN112467162A (en) * | 2019-09-06 | 2021-03-09 | 杭州中科氢能科技有限公司 | Bipolar plate, bipolar plate processing device and bipolar plate preparation method |
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Effective date of registration: 20170301 Address after: 511300, Zengcheng, Guangzhou, Xintang mayor Kong Village Road, No. 1 East Road, No. 11 Patentee after: Guangzhou Hongye Hardware Co., Ltd. Address before: Bai Shui Cun Xiu Yuan Xintang town 511340 Guangdong city of Guangzhou province Zengcheng City Road No. 17 Patentee before: Huang Quanbo |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20181230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |