CN102969517A - Liquid flow frame device for flow battery and electric pile formed by liquid flow frame device - Google Patents
Liquid flow frame device for flow battery and electric pile formed by liquid flow frame device Download PDFInfo
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- CN102969517A CN102969517A CN2012105245171A CN201210524517A CN102969517A CN 102969517 A CN102969517 A CN 102969517A CN 2012105245171 A CN2012105245171 A CN 2012105245171A CN 201210524517 A CN201210524517 A CN 201210524517A CN 102969517 A CN102969517 A CN 102969517A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a liquid flow frame device for a flow battery and an electric pile formed by the liquid flow frame device and relates to a battery pack. The liquid flow frame device comprises a frame body and a cover plate; a liquid flow frame is provided with a primary liquid flow distribution channel and a multi-stage liquid flow distribution channel which is in a radial shape. The cover plate is arranged above the multi-stage liquid flow distribution channel; the cover plate is provided with a rectangular groove; and an overflow port is formed by the rectangular groove together with a retaining dam at the tail end of the multi-stage liquid flow distribution channel of the flow frame. The novel liquid flow frame is formed by the multi-stage liquid flow distribution channel and the cover plate, the length of a built-in runner is increased by the multi-stage liquid flow distribution channel, the multi-stage liquid flow distribution channel plays a role of standardizing and uniforming electrolyte, and the difficult technical problem of large voltage difference caused by nonuniform liquid flows among different monomers is solved. The multi-stage liquid flow distribution channel has the effects of reducing the electrolyte pressure, slowing the electrolyte flowing speed, uniformly distributing the electrolyte and preventing reaction dead angles from being generated in an electrolytic reaction region.
Description
Technical field
The present invention relates to battery pack, relate in particular to a kind of liquid flow frame device of all vanadium ion redox flow battery and the pile of composition thereof.
Background technology
Flow battery, especially vanadium redox battery is (referred to as vanadium cell, VRB), it is a kind of new and effective large capacity energy-storage battery, life-span is long, safe, and successful Demonstration Application is smoothly exported in the electric power of wind energy turbine set at present, and is following at wide new energy field, for example wind power generation, photovoltaic generation, intelligent grid etc. have wide application space.
In vanadium flow battery, liquid flow frame is the important component part of battery, is the bogey that electrolyte circulates in battery.Play the effect of sealing, standard electrolyte type of flow in cell body, battery performance is had material impact.General liquid flow frame has only been paid attention to its sealing effectiveness mostly at present, and electrolyte liquid inlet and outlet runner arranges simply in the liquid flow frame, normally by the inlet feed liquor, then enters simple runner in the liquid flow frame.Inner at liquid stream battery stack, the main flow pipeline is that the inlet by liquid flow frame is formed by stacking.Because have mismachining tolerance and assembling stack position error, therefore, liquid flows at main flow pipeline internal memory in larger flow resistance.Apart from the near liquid flow frame inlet of main flow entrance, flow stream velocity and the pressure of the shunt conduit that the speed of its liquid stream and pressure are far away than distance main flow entrance are large.Like this, liquid between each monocell stream distributes inhomogeneous, causes between each monocell voltage inhomogeneous, makes that voltage difference increases between the different monomers battery, thereby reduces energy content of battery conversion efficiency; On the other hand, the inner simple runner of liquid flow frame arranges and often makes the cell reaction district form the reaction dead angle, causes the battery local voltage too high, and then makes bipolar plates and electrode material corrosion, has greatly reduced the life-span of battery.Therefore, need a kind of brand-new liquid flow frame device, on the one hand can uniform distribution electrolyte to each monocell, on the other hand again can standard electrolyte flowing in liquid flow frame inside, it is even to play the electrolyte flow field, reactionless dead angle, thus improve battery performance.
Summary of the invention
The present invention provides a kind of liquid flow frame device of all vanadium ion redox flow battery and the pile of composition thereof for solving defects of the prior art, liquid flow frame device of the prior art has been carried out scientific and reasonable improvement, to improve energy conversion efficiency, prolong battery.
The present invention is that the technical scheme that adopts that achieves the above object is:
A kind of liquid flow frame device for flow battery, this liquid flow frame device comprises liquid flow frame and cover plate, and being provided with primary stream on the liquid flow frame distributes passage and multistage liquid stream to distribute passage, cover plate is provided with the rectangular channel that many strips are identical, spacing equates, liquid flow frame and cover plate form final liquid stream and distribute passage.
In the described liquid flow frame device, liquid flow frame inlet place has primary stream to distribute passage, and its effect is that the interior electrolyte of uniform distribution main flow pipeline is to each monocell.
In the described liquid flow frame device, be provided with a plurality of centrosymmetric multistage liquid streams on the liquid flow frame and distribute passage, multistage liquid stream distributes passage to be radial.
In the described liquid flow frame device, the multistage liquid of liquid flow frame stream distributes in the final stage passage of passage and has been provided with liquid flow resistance gear dam; Stop that the dam has an oblique angle, form the outlet of liquid slime flux with the rectangular channel of cover plate.
A kind of all vanadium ion redox flow battery pile is characterized in that adopting above-mentioned liquid flow frame device.
The invention has the beneficial effects as follows: the liquid flow frame device of a kind of all vanadium ion redox flow battery provided by the invention offer built-in fluid course at liquid flow frame, and this liquid runner is that primary stream distributes passage and multistage liquid stream to distribute passage.Primary stream is distributed the effectively stream of the liquid between each monocell of uniform distribution of passage.After liquid stream entered liquid flow frame from the inlet of liquid flow frame, multistage liquid stream distributed passage to play the effect of standard electrolyte flow.Electrolyte has reduced the flowing velocity of electrolyte by distributing step by step the flow direction that has changed electrolyte, finally reaches the effect of uniform distribution electrolyte.Thereby the raising energy conversion efficiency prolongs battery.
Description of drawings
Fig. 1 is the assembling schematic diagram of liquid flow frame device of the present invention;
Fig. 2 is liquid flow frame device decomposing schematic representation;
Fig. 3 is the liquid flow frame front schematic view in the liquid flow frame device;
Fig. 4 is the liquid flow frame side schematic view in the liquid flow frame device;
Fig. 5 is the cover plate schematic diagram in the liquid flow frame device
1. liquid flow frames among the figure, 2. cover plate, 3. anodal liquid inlet and outlet, 4. primary stream is distributed passage, 5. multistage liquid stream distributes the second level of passage, 6. multistage liquid flows the first order of distributing passage, and 7. liquid stream distributes grid, 8. pressure stabilizing cavity, 9. the liquid flow resistance is kept off the dam, 10. liquid slime flux outlet, 11. negative pole liquid inlet and outlet, 12. rectangular channels.
Embodiment
Below with reference to accompanying drawing, the present invention is carried out comparatively detailed explanation.
Electrolyte drives after the fluid reservoir outflow through pump, distribute and to enter multistage liquid stream behind the passage 4 and distribute passage to enter again the electrochemical reaction district of battery from the flow through primary stream of liquid flow frame 1 of anodal liquid inlet and outlet 3, reacted electrolyte distributes passage to distribute passage 4 through primary stream from multistage liquid stream, and then enters sprue by anodal liquid inlet and outlet 3 and flow back to fluid reservoir.The symmetrical installation centered by the other half sheet battery liquid flow frame 1, it circulates in the manner described above, thereby consists of the circulation of second half sheet battery.Electrolyte is flowed through the primary stream of liquid flow frame 1 when distributing passage 4 from anodal liquid inlet and outlet 3, primary stream distributes the block on the passage 4 to play the current limliting depressurization, not only having limited a part of liquid stream in the sprue passes through, liquid with each cell of uniform distribution flows, and has reduced to distribute by primary stream the flow stream pressure of passage 4.Distribute the liquid stream of passage 4 by primary stream this moment is inhomogeneous, will have the reaction dead angle if directly introduce reaction zone.And multistage liquid stream distributes passage to play the effect of standard electrolyte.Owing to the inertia of liquid stream, electrolyte can not enter immediately multistage liquid stream and distribute passage after electrolyte distributed passage 4 to enter from primary stream, flowed into multistage liquid stream distribution passage but enter buffering area again.Multistage liquid stream distributes passage to distribute the one-level 6 of passage, multistage liquid stream to distribute the secondary 5 of passage by multistage liquid stream ..., liquid stream in layer distributes constantly shunting electrolyte, and electrolyte is evenly expanded to the Width of whole reaction zone.In finally distribute the final stage passage of passage near the multistage liquid stream of reaction zone, be provided with liquid flow resistance gear dam 9, liquid flow resistance gear dam 9 has an oblique angle, rectangular channel 12 with cover plate 1 forms liquid slime flux outlet 10, this liquid flow resistance gear dam 9 stops flowing of liquid stream, when the liquid flowing source source continues to flow fashionablely, liquid stream overflows by liquid slime flux outlet 12.Because electrolyte overflows by liquid slime flux outlet 12, guaranteed that therefore electrolyte flow velocity and pressure when entering reaction zone are uniform.And after electrolyte flow through reaction zone, multistage liquid stream distributed passage then to converge electrolyte as funnel.As seen, adopt structure of the present invention to solve between the monomer because of the inhomogeneous technical barrier that causes voltage to have a long way to go of liquid stream, make voltage difference between cell in very among a small circle, increased substantially stability and the fail safe of vanadium cell.
Embodiment 1
A kind of liquid flow frame device for flow battery, this liquid flow frame device comprises liquid flow frame 1 and 2 cover plates 2, and be provided with primary stream on the liquid flow frame 1 and distribute passage 4 and multistage liquid stream to distribute passage, each cover plate 2 is provided with the rectangular channel 12 that many strips are identical, spacing equates; Described primary stream distributes passage 3 to be arranged on the anodal liquid inlet and outlet place 3 of liquid flow frame 1; Symmetrical centered by the described multistage liquid stream distribution passage, multistage liquid stream distributes the cross section of passage to be radial; Liquid flow frame 1 and cover plate 2 form final liquid stream and distribute passage.
It is 2 grades that described multistage liquid stream distributes passage.
Described multistage liquid stream distributes in the final stage passage of passage and is provided with liquid flow resistance gear dam 9; Liquid flow resistance gear dam 9 has an oblique angle, forms liquid slime flux outlet 10 with the rectangular channel 12 of cover plate 1.
Embodiment 2
A kind of liquid flow frame device for flow battery, this liquid flow frame device comprises liquid flow frame 1 and 2 cover plates 2, and be provided with primary stream on the liquid flow frame 1 and distribute passage 4 and multistage liquid stream to distribute passage, each cover plate 2 is provided with the rectangular channel 12 that many strips are identical, spacing equates; Described primary stream distributes passage 3 to be arranged on the anodal liquid inlet and outlet place 3 of liquid flow frame 1; Multistage liquid stream distributes the cross section of passage to be radial; Liquid flow frame 1 and cover plate 2 form final liquid stream and distribute passage.
It is 3 grades that described multistage liquid stream distributes passage.
Described multistage liquid stream distributes in the final stage passage of passage and is provided with liquid flow resistance gear dam 9; Liquid flow resistance gear dam 9 has an oblique angle, forms liquid slime flux outlet 10 with the rectangular channel 12 of cover plate 1.
Embodiment 3
A kind of liquid flow frame device for flow battery, this liquid flow frame device comprises liquid flow frame 1 and 2 cover plates 2, and be provided with primary stream on the liquid flow frame 1 and distribute passage 4 and multistage liquid stream to distribute passage, each cover plate 2 is provided with the rectangular channel 12 that many strips are identical, spacing equates; Described primary stream distributes passage 3 to be arranged on the anodal liquid inlet and outlet place 3 of liquid flow frame 1; Multistage liquid stream distributes the cross section of passage to be radial; The central plane that multistage liquid stream distributes the first order 6 of passage to be not limited to as required liquid flow frame 1 can be positioned near negative pole liquid inlet and outlet 11 places; Liquid flow frame 1 and cover plate 2 form final liquid stream and distribute passage.
It is 4 grades that described multistage liquid stream distributes passage.
Described multistage liquid stream distributes in the final stage passage of passage and is provided with liquid flow resistance gear dam 9; Liquid flow resistance gear dam 9 has an oblique angle, forms liquid slime flux outlet 10 with the rectangular channel 12 of cover plate 1.
Embodiment 4
A kind of liquid flow frame device for flow battery, this liquid flow frame device comprises liquid flow frame 1 and 2 cover plates 2, is not provided with the rectangular channel 12 that many strips are identical, spacing equates on the cover plate 2; And being provided with primary stream on the liquid flow frame 1 distributes passage 4 and multistage liquid stream to distribute passage; Described primary stream distributes passage 3 to be arranged on the anodal liquid inlet and outlet place 3 of liquid flow frame 1; Multistage liquid stream distributes the cross section of passage to be radial; Liquid flow frame 1 and cover plate 2 form final liquid stream and distribute passage.
It is 3 grades that described multistage liquid stream distributes passage.
Described multistage liquid stream distributes in the final stage passage of passage and is provided with liquid flow resistance gear dam 9; Liquid flow resistance gear dam 9 has an oblique angle, and liquid flow resistance gear also is provided with the rectangular channel 12 that many strips are identical, spacing equates on the dam 9, forms liquid slime flux outlet 10 with cover plate 1.
Embodiment 5-8
A kind of all vanadium ion redox flow battery pile has adopted the described liquid flow frame device for flow battery such as embodiment 1-4.
It is comparatively detailed that above-mentioned each preferred embodiment is described, but should not be construed as limitation of the present invention, and those skilled in the art are subjected to enlightenment of the present invention simply to replace, make up or be out of shape should to fall within the scope of protection of the present invention.
Claims (9)
1. liquid flow frame device that is used for flow battery, this liquid flow frame device comprises liquid flow frame (1) and cover plate (2), it is characterized in that: liquid flow frame (1) adopts built-in primary stream to distribute passage (4) and multistage liquid stream to distribute passage, described multistage liquid stream distributes the passage top that cover plate (1) is arranged, and has rectangular channel (12) on the cover plate (1); Liquid flow frame (1) forms final liquid stream with cover plate (2) and distributes passage.
2. liquid flow frame device according to claim 1 is characterized in that: described multistage liquid stream distributes passage to be at least 2 grades.
3. liquid flow frame device according to claim 1 is characterized in that: symmetrical centered by the described multistage liquid stream distribution passage.
4. liquid flow frame device according to claim 1 and 2 is characterized in that: described multistage liquid stream distributes the cross section of passage to be radial.
5. liquid flow frame device according to claim 1 is characterized in that: the end of the multistage distribution passage of described liquid flow frame is provided with liquid flow resistance gear dam (9); Liquid flow resistance gear dam (9) has an oblique angle, forms liquid slime flux outlet (10) with the rectangular channel (12) of cover plate (1).
6. liquid flow frame device according to claim 1, it is characterized in that: the quantity of described cover plate (1) is 2.
7. liquid flow frame device according to claim 1, it is characterized in that: described rectangular channel (12) shape is identical, spacing is equal.
8. liquid flow frame device according to claim 1 is characterized in that: described primary stream distributes passage (4) to be provided with block.
9. all vanadium ion redox flow battery pile, it is characterized in that: the liquid flow frame device of this pile adopts liquid flow frame device claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105245171A CN102969517A (en) | 2012-12-10 | 2012-12-10 | Liquid flow frame device for flow battery and electric pile formed by liquid flow frame device |
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| CN2012105245171A CN102969517A (en) | 2012-12-10 | 2012-12-10 | Liquid flow frame device for flow battery and electric pile formed by liquid flow frame device |
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| CN102969517A true CN102969517A (en) | 2013-03-13 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103441290A (en) * | 2013-09-06 | 2013-12-11 | 大连融科储能技术发展有限公司 | Electrode frame for all vanadium flow battery |
| CN103682408A (en) * | 2013-12-06 | 2014-03-26 | 中国东方电气集团有限公司 | Liquid flow frame assembly and flow cell |
| CN105742670A (en) * | 2014-12-09 | 2016-07-06 | 中国科学院大连化学物理研究所 | Electrolyte flow homogenizing method for flow battery |
| CN105742669A (en) * | 2014-12-09 | 2016-07-06 | 中国科学院大连化学物理研究所 | Electrolyte flow homogenization method of redox flow battery |
| CN106450404A (en) * | 2015-07-27 | 2017-02-22 | 大连融科储能技术发展有限公司 | Redox flow cell stack |
| CN107615541A (en) * | 2016-03-29 | 2018-01-19 | 住友电气工业株式会社 | Redox flow batteries framework, redox flow batteries and battery pile |
| CN109411782A (en) * | 2018-12-13 | 2019-03-01 | 中南大学 | A kind of liquid flow frame of all-vanadium flow battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103441290B (en) * | 2013-09-06 | 2016-04-13 | 大连融科储能技术发展有限公司 | A kind of electrode frame for all-vanadium flow battery |
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| CN105742670A (en) * | 2014-12-09 | 2016-07-06 | 中国科学院大连化学物理研究所 | Electrolyte flow homogenizing method for flow battery |
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| CN105742670B (en) * | 2014-12-09 | 2018-05-18 | 中国科学院大连化学物理研究所 | A kind of method of fluid cell electrolyte flowing homogenization |
| CN106450404A (en) * | 2015-07-27 | 2017-02-22 | 大连融科储能技术发展有限公司 | Redox flow cell stack |
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| CN107615541A (en) * | 2016-03-29 | 2018-01-19 | 住友电气工业株式会社 | Redox flow batteries framework, redox flow batteries and battery pile |
| CN107615541B (en) * | 2016-03-29 | 2019-01-18 | 住友电气工业株式会社 | Redox flow batteries framework, redox flow batteries and battery pile |
| US10193178B2 (en) | 2016-03-29 | 2019-01-29 | Sumitomo Electric Inductries, Ltd. | Redox flow battery frame body, redox flow battery, and cell stack |
| TWI700855B (en) * | 2016-03-29 | 2020-08-01 | 日商住友電氣工業股份有限公司 | Frame for redox flow battery, redox flow battery and battery stack |
| CN109411782A (en) * | 2018-12-13 | 2019-03-01 | 中南大学 | A kind of liquid flow frame of all-vanadium flow battery |
| CN109411782B (en) * | 2018-12-13 | 2023-09-08 | 中南大学 | Liquid flow frame of all-vanadium redox flow battery |
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