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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- 239000012530 fluid Substances 0.000 title description 4
- 239000003792 electrolyte Substances 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 229910002804 graphite Inorganic materials 0.000 claims description 15
- 239000010439 graphite Substances 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000005341 cation exchange Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000003011 anion exchange membrane Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 12
- 230000010287 polarization Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 238000003466 welding Methods 0.000 description 10
- 230000004888 barrier function Effects 0.000 description 7
- 238000004146 energy storage Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229910001456 vanadium ion Inorganic materials 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012983 electrochemical energy storage Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 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
本实用新型提供了一种双倍功率的液流电池电堆结构及包含此电堆的液流电池，所述的电堆结构包括两块多流道端板(1)、两块多流道绝缘板(2)、两块主集流板(3)、两个子电堆(4)和一块液流分隔板(5)；所述的电堆为对称结构，中间是液流分隔板(5)，左右两侧分别依次是子电堆(4)、主集流板(3)、多流道绝缘板(2)和多流道端板(1)。每个子电堆形成单独进、出液的独立电解液流通体系，将电解液在电堆中的流道长度缩短一半，这不仅可以大大降低电解液的流动阻力，减小泵的功耗；同时可以减小电解液在流道中的电位差，减小电池的极化，降低电池的能量损失。与普通液流电池单个电堆相比，该电堆中的单电池数量可增加一倍，功率也可增加一倍，且不会降低液流电池的能量效率。
The utility model provides a double-power liquid flow battery stack structure and a liquid flow battery including the stack. The stack structure includes two multi-channel end plates (1), two multi-channel insulation plate (2), two main collector plates (3), two sub-stacks (4) and a liquid flow separation plate (5); the electric stack is a symmetrical structure, and the middle is a liquid flow separation plate ( 5), and the left and right sides respectively are sub-stacks (4), main collector plates (3), multi-channel insulating plates (2) and multi-channel end plates (1). Each sub-stack forms an independent electrolyte circulation system with separate inlet and outlet, which shortens the flow path length of the electrolyte in the stack by half, which can not only greatly reduce the flow resistance of the electrolyte, but also reduce the power consumption of the pump; at the same time It can reduce the potential difference of the electrolyte in the flow channel, reduce the polarization of the battery, and reduce the energy loss of the battery. Compared with a single stack of ordinary flow batteries, the number of single cells in the stack can be doubled, and the power can also be doubled without reducing the energy efficiency of the flow battery.
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)
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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 | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20130222 |