CN201956424U - Double power fluid redox cell stack structure - Google Patents
Double power fluid redox cell stack structure Download PDFInfo
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- CN201956424U CN201956424U CN2011200436972U CN201120043697U CN201956424U CN 201956424 U CN201956424 U CN 201956424U CN 2011200436972 U CN2011200436972 U CN 2011200436972U CN 201120043697 U CN201120043697 U CN 201120043697U CN 201956424 U CN201956424 U CN 201956424U
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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 utility model provides a double power fluid redox cell stack structure and a fluid redox cell comprising the stack. The stack structure comprises two multi-runner end plates (1), two multi-runner insulating boards (2), two master collector plates (3), two sub-stacks (4) and a fluid redox isolating board (5), wherein the stack has a symmetrical structure; and the middle part of the symmetrical structure is provided with the fluid redox isolating board (5), and the left and right sides of the symmetrical structure are sequentially provided with the sub-stack (4), the master collector plate (3), the multi-runner insulating board (2) and the multi-runner end plate (1) respectively. Each sub-stack forms an independent electrolyte circulating system independently introducing and discharging electrolyte, and the runner length of the electrolyte in the stack is shortened by a half, so the flowing resistance of the electrolyte can be greatly reduced, and the power consumption of a pump can be reduced. Simultaneously, a potential difference of the electrolyte in runners and the polarization and energy loss of a cell all can be reduced. Compared with the single stack of an ordinary fluid redox cell, the number of single cells in the stack can be doubled, the power can also be doubled, and the energy efficiency of the fluid redox cell may not be reduced.
Description
Technical field
The utility model relates to the manufacturing field of flow battery, the particularly design of flow battery electric pile structure and manufacturing.
Background technology
Fossil energy exhausted day by day and since the excessively serious environmental pollution of using fossil energy to cause make research and utilize regenerative resource to become the grand strategy of countries in the world energy security and sustainable development on a large scale.Regenerative resource (as wind energy, solar energy, oceanic energy and small power station etc.) generating has unstable and discontinuous characteristics, need exploitation and build supporting energy-storage system to guarantee the continuous and steady of renewable energy power generation and power supply, particularly large-scale wind electricity is incorporated into the power networks and carries out peak regulation and frequency modulation, guarantee the quality of grid generation.In existing energy storage scheme, flow battery (Flow Redox Cell) because have the energy efficiency height, capacitance of storage is big, addressing is free and advantage such as with low cost, is considered to be hopeful most to be applied to the energy storage scheme of extensive energy storage electric power storage occasion.In addition, efficient flow battery also can be used for " peak load shifting " of thermal power generation and nuclear power station electrical network; The emergency power supply of unusual time such as natural calamity, war, the stand-by station in important military base etc.; Through particular design and manufacturing, it also can replace lead acid accumulator to be used as the electrical source of power of submarine submerge.
Flow battery is by Thaller, L.H.(NASA Lewis Research Center, Cleveland, United States) in a kind of electrochemical energy storage notion of proposition in 1974.Flow battery partly is made up of pile, electrolyte solution and electrolyte storage donor system etc.With different in active material in the common storage battery is comprised in the positive and negative electrode of battery, the positive and negative electrode active material in the flow battery is dissolved in the electrolyte solution respectively, and is stored in two fluid reservoirs.When battery operated, the positive and negative electrode electrolyte solution flows into pile from fluid reservoir under the driving of pump, oxidation-reduction reaction takes place on inert electrode, flows out pile then and returns fluid reservoir.By electrolyte solution circulating in battery, finish the mutual conversion of electric energy and chemical energy, realize energy storage and power supply.
Pile is one of core of flow battery.General, the pile of flow battery adopts bipolar heap formula structure, and single pile realizes that by a plurality of oxidation-reduction reactions that carry out the monocell of charge and discharge process is formed, the shared bipolarity collector plate of adjacent two monocells, a plurality of monocells are connected by the filter press mode and are assembled into pile.Electrolyte is distributed to each monocell by the runner of arranging in the pile after entering pile under the driving of pump.The most important technical indicator of flow battery is an energy efficiency, therefore, on the structural design of pile, reduce energy consumption as far as possible.Yet the researcher finds that if the quantity of monocell is too much in the single pile, electrolyte just need flow in long runner, this can increase the electrolyte flow resistance on the one hand, improves the power requirement to pump, increases the power consumption of pump; On the other hand, electrolyte can form bigger potential difference in long runner, and the polarization that this can increase battery causes the energy loss of battery.In order to improve the energy efficiency of flow battery, the monocell quantity in the single pile just is restricted, and its power scale also is restricted.
Summary of the invention
In order to enlarge the power scale of flow battery pile, avoid simultaneously owing to forming the energy loss problem that long electrolyte channel causes, the utility model provides a kind of flow battery electric pile structure of double power and has comprised the flow battery of this pile, compare with the single pile of common flow battery, monocell quantity in this pile can double, power also can double, and can not reduce the energy efficiency of flow battery.
For achieving the above object, the technical solution of the utility model is: the flow battery pile that the utility model relates to comprises two multithread road end plates 1, two multithread road insulation boards 2, two main collector plate 3, two sub-piles 4 and liquid flow point dividing plates 5; Described pile is a symmetrical structure, and the centre is a liquid flow point dividing plate 5, and the left and right sides is respectively sub-pile 4, main collector plate 3, multithread road insulation board 2 and multithread road end plate 1 successively.
Multithread described in the utility model road end plate 1 is made by the metal of high mechanical properties, comprises steel plate or aluminium sheet, but is not limited thereto, and thickness is 1 ~ 8cm; Be provided with anodal electrolyte inflow entrance 6, anodal electrolyte flow export 7, negative pole electrolyte inflow entrance 8 and negative pole electrolyte flow export 9 above, its diameter is 1 ~ 5cm; Multithread road end plate 1 had both played the effect of being fixed and clamped to pile, again the passage that provides positive and negative electrode electrolyte to flow into, flow out for each sub-pile.
Multithread described in the utility model road insulation board 2 is made by corrosion resistant electronic isolation material, comprises PE, PVC or PP, but is not limited thereto; It is provided with the electrolyte channel hole corresponding with multithread road end plate 1, and its diameter is 1 ~ 5cm; The effect of multithread road insulation board 2 is the electronics paths that cut off between main collector plate 3 and the multithread road end plate 1, makes pile and external environment electronic isolation.
The electric transmission interface that main collector plate 3 described in the utility model is pile and external circuit is made by the material with high electronic conductivity, comprises copper coin, graphite cake, but is not limited thereto; Its area is identical with the single-cell electrodes area of sub-pile 4, or its length and width limit respectively increases by 0.1 ~ 1cm than electrode length and width limit.
Liquid flow point dividing plate 5 described in the utility model is made up of liquid flow point bulkhead 17 and bipolar plates 12, wherein liquid flow point bulkhead 17 is identical with the material of electrolyte water conservancy diversion frame 11, there is not electrolyte stream through hole 15 on it, electrolyte water conservancy diversion groove 16 only is set, and is mechanical connection or laser welding between itself and the bipolar plates 12; Shared this plate of high order end monocell of the sub-pile of low order end monocell and right side of the sub-pile in left side is as its electrolyte water conservancy diversion frame and bipolar plates; The effect of liquid flow point dividing plate 5 is circuit of two sub-piles 4 of series connection conducting, the electrolyte of blocking two sub-piles 4 simultaneously flows into path, make electrolyte behind this plate of flowing through, promptly flow out pile through the electrolyte sprue of two sub-piles 4 in opposite direction, make each sub-pile 4 form the independent electrolyte circulation system of independent liquid inlet and outlet.
Advantage of the present utility model and good effect show as: double power flow battery electric pile structure provided by the utility model, adopt the circuit of two sub-piles of liquid flow point dividing plate series connection conducting, block the electrolyte path of two sub-piles simultaneously, make each sub-pile form the independent electrolyte circulation system of independent liquid inlet and outlet, the flow channel length of electrolyte in pile can be shortened half, this can reduce the electrolyte flow resistance on the one hand greatly, reduces the power consumption of pump; On the other hand, can reduce the potential difference of electrolyte in runner, reduce the polarization of battery, reduce the energy loss of battery.Compare with the single pile of common flow battery, the monocell quantity in this pile can double, and power also can double, and can not reduce the energy efficiency of flow battery.
Description of drawings
Fig. 1 is the structural representation of the flow battery pile of double power;
Fig. 2 is the electrolyte channel structural representation of the flow battery pile of double power;
Fig. 3 is the decomposition texture schematic diagram of the flow battery pile of double power;
Fig. 4 is the flow passage structure schematic diagram of electrolyte water conservancy diversion frame and liquid flow point bulkhead.
Identify in the accompanying drawing: 1-multithread road end plate; 2-multithread road insulation board; 3-master's collector plate; 4-pile; 5-liquid flow point dividing plate; The anodal electrolyte inflow entrance of 6-; The anodal electrolyte flow export of 7-; 8-negative pole electrolyte inflow entrance; 9-negative pole electrolyte flow export; The 10-monocell; 11-electrolyte water conservancy diversion frame; The 12-bipolar plates; The 13-electrode; The 14-barrier film; 15-electrolyte stream through hole; 16-electrolyte water conservancy diversion groove; 17-liquid flow point bulkhead.
Specific embodiments
The flow battery electric pile structure that adopts the utility model to provide manufactures and designs pile, and its main points are that electric pile structure comprises two multithread road end plates 1, two multithread road insulation boards 2, two main collector plate 3, two sub-piles 4 and liquid flow point dividing plates 5; Described pile is a symmetrical structure, and the centre is a liquid flow point dividing plate 5, and the left and right sides is respectively sub-pile 4, main collector plate 3, multithread road insulation board 2 and multithread road end plate 1 successively.Wherein, multithread road end plate 1 is steel plate or aluminium sheet, and thickness is 1 ~ 8cm; Be provided with anodal electrolyte inflow entrance 6, anodal electrolyte flow export 7, negative pole electrolyte inflow entrance 8 and negative pole electrolyte flow export 9 above, its diameter is 1 ~ 5cm.Multithread road insulation board 2 is made by PE, PVC or PP; It is provided with the electrolyte channel hole corresponding with multithread road end plate, and its diameter is 1 ~ 5cm.Main collector plate 3 is copper coin or graphite cake; Its area is identical with sub-pile single-cell electrodes area, or its length and width limit respectively increases by 0.1 ~ 1cm than electrode length and width limit.Sub-pile 4 is composed in series by at least two monocells 10, and each monocell forms 14 by electrolyte water conservancy diversion frame 11, bipolar plates 12, electrode 13 and barrier film; Described electrolyte water conservancy diversion frame 11 is made by PE, PVC or PP, and it is provided with four electrolyte stream through holes 15 and water conservancy diversion groove 16; Described bipolar plates 12 is conductive plastic plate or graphite cake; Be mechanical connection or laser welding between electrolyte water conservancy diversion frame 11 and the bipolar plates 12; Described electrode 13 is graphite felt or graphite cake, and electrode area is 100 ~ 20000cm
2Described barrier film 14 can be selected anion-exchange membrane, cation-exchange membrane, composite membrane, PP felt, microporous glass fiber film or supermolecule microporous PE film for use; The thickness of described monocell 10 is 0.5 ~ 3cm, and the power of described sub-pile 4 is 0.1 ~ 500kW.Liquid flow point dividing plate 5 is made up of liquid flow point bulkhead 17 and bipolar plates 12, wherein liquid flow point bulkhead 17 is identical with electrolyte water conservancy diversion frame 11 materials, not having electrolyte stream through hole 15 on it, electrolyte water conservancy diversion groove 16 only is set, is mechanical connection or laser welding between itself and the bipolar plates; Shared this plate of high order end monocell of the sub-pile of low order end monocell and right side of the sub-pile in left side is as its electrolyte water conservancy diversion frame and bipolar plates.
This electric pile structure is applied to all vanadium ion redox flow battery, during battery charging and discharging, following reaction takes place at electrode surface:
Anodal:
VO
2+＋2H
++?e
?VO
2+＋H
2O
Negative pole:
V
2+ 
?V
3+＋e
Multithread road end plate is a steel plate, and thickness is 3cm, and it is 2cm that electrolyte is imported and exported diameter; Multithread road insulation board is the PE plate, and the electrolyte channel hole diameter is 2cm; Main collector plate is a copper coin, and area is identical with sub-pile single-cell electrodes area; Monocell quantity is 10 joints in the sub-pile, and electrolyte water conservancy diversion frame is made by PE, and bipolar plates is a conductive plastic plate, is laser welding between electrolyte water conservancy diversion frame and the bipolar plates, and electrode is a graphite felt, and area is 5000cm
2, barrier film is selected cation-exchange membrane for use, and the thickness of monocell is 1.5cm, and sub-pile power is 5kW.Liquid flow point bulkhead is identical with electrolyte water conservancy diversion frame material, is laser welding between itself and the bipolar plates.The all vanadium ion redox flow battery capacity of preparation is 20kWh.At 80mA/cm
2Discharge and recharge under the condition, the voltage efficiency of battery is 84%, energy efficiency is 82%, moving 100 its capacity attenuation rates of circulation back is 0.5%.
Multithread road end plate is a steel plate, and thickness is 3cm, and it is 2cm that electrolyte is imported and exported diameter; Multithread road insulation board is the PE plate, and the electrolyte channel hole diameter is 2cm; Main collector plate is a copper coin, and area is identical with sub-pile single-cell electrodes area; Monocell quantity is 20 joints in the sub-pile, and electrolyte water conservancy diversion frame is made by PE, and bipolar plates is a conductive plastic plate, is laser welding between electrolyte water conservancy diversion frame and the bipolar plates, and electrode is a graphite felt, and area is 8000cm
2, barrier film is selected cation-exchange membrane for use, and the thickness of monocell is 1.5cm, and sub-pile power is 10kW.Liquid flow point bulkhead is identical with electrolyte water conservancy diversion frame material, is laser welding between itself and the bipolar plates.The all vanadium ion redox flow battery capacity of preparation is 40kWh.At 80mA/cm
2Discharge and recharge under the condition, the voltage efficiency of battery is 82%, energy efficiency is 81%, moving 100 its capacity attenuation rates of circulation back is 1%.
Multithread road end plate is a steel plate, and thickness is 3cm, and it is 2cm that electrolyte is imported and exported diameter; Multithread road insulation board is the PE plate, and the electrolyte channel hole diameter is 2cm; Main collector plate is a copper coin, and area is identical with sub-pile single-cell electrodes area; Monocell quantity is 30 joints in the sub-pile, and electrolyte water conservancy diversion frame is made by PE, and bipolar plates is a conductive plastic plate, is laser welding between electrolyte water conservancy diversion frame and the bipolar plates, and electrode is a graphite felt, and area is 4000cm
2, barrier film is selected cation-exchange membrane for use, and the thickness of monocell is 1.5cm, and sub-pile power is 10kW.Liquid flow point bulkhead is identical with electrolyte water conservancy diversion frame material, is laser welding between itself and the bipolar plates.The all vanadium ion redox flow battery capacity of preparation is 40kWh.At 80mA/cm
2Discharge and recharge under the condition, the voltage efficiency of battery is 83%, energy efficiency is 80%, moving 100 its capacity attenuation rates of circulation back is 1%.
Claims (6)
1. the flow battery electric pile structure of a double power, it is characterized in that: pile comprises two multithread road end plates (1), two multithread road insulation boards (2), two main collector plate (3), two sub-piles (4) and a liquid flow point dividing plate (5); Described pile is a symmetrical structure, and the centre is a liquid flow point dividing plate (5), and the left and right sides is respectively sub-pile (4), main collector plate (3), multithread road insulation board (2) and multithread road end plate (1) successively.
2. the flow battery electric pile structure of a kind of double power according to claim 1, it is characterized in that: described multithread road end plate (1) is made by the metal of high mechanical properties, comprises steel plate or aluminium sheet, and thickness is 1 ~ 8cm; Be provided with anodal electrolyte inflow entrance (6), anodal electrolyte flow export (7), negative pole electrolyte inflow entrance (8) and negative pole electrolyte flow export (9) above, its diameter is 1 ~ 5cm.
3. the flow battery electric pile structure of a kind of double power according to claim 1, it is characterized in that: described multithread road insulation board (2) is made by corrosion resistant electronic isolation material, comprises PE, PVC or PP; It is provided with the electrolyte channel hole corresponding with multithread road end plate (1), and its diameter is 1 ~ 5cm.
4. the flow battery electric pile structure of a kind of double power according to claim 1, it is characterized in that: described main collector plate (3) is made by the material with high electronic conductivity, comprises copper coin or graphite cake; Its area is identical with the single-cell electrodes area of sub-pile (4), or its length and width limit respectively increases by 0.1 ~ 1cm than electrode length and width limit.
5. the flow battery electric pile structure of a kind of double power according to claim 1, it is characterized in that: described sub-pile (4) is composed in series by at least two monocells (10), and each monocell (10) is formed (14) by electrolyte water conservancy diversion frame (11), bipolar plates (12), electrode (13) and barrier film; Described electrolyte water conservancy diversion frame (11) is made by corrosion resistant electronic isolation material, comprises PE, PVC or PP, and it is provided with four electrolyte stream through holes (15) and water conservancy diversion groove (16); Described bipolar plates (12) is conductive plastic plate or graphite cake; Between electrolyte water conservancy diversion frame (11) and the bipolar plates (12) is mechanical connection or laser welding; Described electrode (13) is graphite felt or graphite cake, and electrode area is 100 ~ 20000cm
2Described barrier film (14) can be selected anion-exchange membrane, cation-exchange membrane, composite membrane, PP felt, microporous glass fiber film or supermolecule microporous PE film for use; The thickness of described monocell (10) is 0.5 ~ 3cm; The power of described sub-pile (4) is 0.1 ~ 500kW.
6. the flow battery electric pile structure of a kind of double power according to claim 1, it is characterized in that: described liquid flow point dividing plate (5) is made up of liquid flow point bulkhead (17) and bipolar plates (12), wherein liquid flow point bulkhead (17) is identical with electrolyte water conservancy diversion frame (12) material, there is not electrolyte stream through hole (15) on it, electrolyte water conservancy diversion groove (16) only is set, and is mechanical connection or laser welding between itself and the bipolar plates (12); Shared this plate of high order end monocell of the sub-pile of low order end monocell and right side of the sub-pile in left side is as its electrolyte water conservancy diversion frame and bipolar plates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200436972U CN201956424U (en) | 2011-02-22 | 2011-02-22 | Double power fluid redox cell stack structure |
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| CN2011200436972U CN201956424U (en) | 2011-02-22 | 2011-02-22 | Double power fluid redox cell stack structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136594A (en) * | 2011-02-22 | 2011-07-27 | 上海林洋储能科技有限公司 | Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile |
| CN103531828A (en) * | 2012-07-05 | 2014-01-22 | 上海弘枫实业有限公司 | Flow battery graphite plate |
| CN107146886A (en) * | 2017-05-08 | 2017-09-08 | 喻思皓 | A kind of vanadium cell structure and Electrode treatment technique |
| CN108134106A (en) * | 2018-01-10 | 2018-06-08 | 保定百能汇通新能源科技有限公司 | A kind of compound bipolar plates and preparation method thereof |
| CN109411781A (en) * | 2017-08-18 | 2019-03-01 | 上海电气集团股份有限公司 | Collector plate and pile comprising it |
| CN110021734A (en) * | 2018-01-10 | 2019-07-16 | 北京好风光储能技术有限公司 | A kind of bipolar battery heap |
-
2011
- 2011-02-22 CN CN2011200436972U patent/CN201956424U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136594A (en) * | 2011-02-22 | 2011-07-27 | 上海林洋储能科技有限公司 | Double-power liquid stream battery electric pile structure and liquid stream battery containing electric pile |
| CN103531828A (en) * | 2012-07-05 | 2014-01-22 | 上海弘枫实业有限公司 | Flow battery graphite plate |
| CN107146886A (en) * | 2017-05-08 | 2017-09-08 | 喻思皓 | A kind of vanadium cell structure and Electrode treatment technique |
| CN107146886B (en) * | 2017-05-08 | 2021-04-27 | 雅安市中甫新能源开发有限公司 | Vanadium battery structure and electrode treatment process |
| CN109411781A (en) * | 2017-08-18 | 2019-03-01 | 上海电气集团股份有限公司 | Collector plate and pile comprising it |
| CN108134106A (en) * | 2018-01-10 | 2018-06-08 | 保定百能汇通新能源科技有限公司 | A kind of compound bipolar plates and preparation method thereof |
| CN110021734A (en) * | 2018-01-10 | 2019-07-16 | 北京好风光储能技术有限公司 | A kind of bipolar battery heap |
| CN110021734B (en) * | 2018-01-10 | 2020-11-17 | 北京好风光储能技术有限公司 | Bipolar battery stack |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20130222 |