CN103022542A - Liquid flow frame device and vanadium cell containing same - Google Patents
Liquid flow frame device and vanadium cell containing same Download PDFInfo
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- CN103022542A CN103022542A CN2012105406830A CN201210540683A CN103022542A CN 103022542 A CN103022542 A CN 103022542A CN 2012105406830 A CN2012105406830 A CN 2012105406830A CN 201210540683 A CN201210540683 A CN 201210540683A CN 103022542 A CN103022542 A CN 103022542A
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- 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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- 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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Abstract
The invention relates to the field of a vanadium cell, and particularly relates to a liquid flow frame device for the vanadium cell, and the vanadium cell containing the liquid flow frame device, which can be used for overcoming the defects of low leakage resistance, reliability and stability and the like in a liquid flow frame of the prior art and the defect of low reliability of the traditional vanadium cell. A liquid flow frame which is provided with passageways, liquid openings and liquid holes is adopted in the liquid flow frame device, wherein the liquid openings refer to a liquid inlet opening and a liquid outlet opening; the liquid holes refer to a liquid inlet hole and a liquid outlet hole; a sheet frame I and a sheet frame II are arranged at the two sides of the liquid flow frame in parallel, a rotary liquid flow passageway I and a rotary liquid flow passageway II are respectively arranged on the sheet frame I and the sheet frame II, a structure is centrally and symmetrically arranged between the rotary liquid flow passageway I and a rotary liquid flow passageway II, each rotary liquid flow passageway is an arch passageway which is bended and rotary more than two times, and the arch passageways are distributed at the two sides of the liquid flow frame. The liquid flow frame device provided by the invention has better reliability, stability and higher efficiency. The vanadium cell has high reliability, efficiency and stability.
Description
Technical field
The present invention relates to the vanadium cell field, relate in particular to a kind of liquid flow frame device for vanadium cell, and the vanadium cell that contains this liquid flow frame device.
Background technology
The vanadium cell full name is vanadium redox battery (Vanadium Redox Battery is abbreviated as VRB), is a kind of redox cell energy-storage system based on the vanadium metal element.The vanadium cell electric energy is stored in the sulfuric acid electrolyte of different valence state vanadium ion in the mode of chemical energy, by external pump electrolyte is pressed in the battery pile body, under the machine power effect, it is circulated in the closed-loop path of different fluid reservoirs and half-cell, adopt proton exchange membrane as the barrier film of battery pack, the electrolyte solution concurrent flow is crossed electrode surface and electrochemical reaction is occured, collect and conduction current by double electrode plate, thereby so that the chemical energy that is stored in the solution converts electric energy to, this reversible course of reaction makes vanadium cell finish smoothly charging, the discharge and recharge.
As shown in Figure 1, find out from the operation logic schematic diagram of traditional vanadium cell, vanadium cell generally includes: amberplex 11, anode electrolyte 12, negative pole electrolyte 13, positive plate 14, negative plate 15, anode electrolyte container 16, negative pole electrolyte container 17 and pump 18,19, separate by amberplex 11 between anode electrolyte 12 and the negative pole electrolyte 13, positive plate 14 contacts with anode electrolyte 12, negative plate 15 contacts with negative pole electrolyte 13, the circulation circuit at negative pole electrolyte 13 places is provided with anode electrolyte container 16 and pump 18, and the circulation circuit at anode electrolyte 12 places is provided with negative pole electrolyte container 17 and pump 19.
When vanadium cell shown in Figure 1 discharge, load respectively with positive plate 4 be connected plate plate 5 and be connected, thereby so that vanadium cell power to the load.Inner at this vanadium cell, cation can pass amberplex 1 and enter in the anode electrolyte 2 from negative pole electrolyte 3.And when vanadium cell shown in Figure 1 charging, DC power supply and positive plate 4 be connected with negative plate be connected, make vanadium cell inside carry out the reaction opposite with discharge process, thereby be chemical energy with electric energy conversion.
Usually, be provided with inlet and liquid outlet on the liquid flow frame, flow into described chamber to allow electrolyte, and flow out from chamber, thereby in the running of vanadium cell, electrolyte is constantly circulated.This shows that the structure of liquid flow frame has important impact for the flow circuit of electrolyte in vanadium cell.
Electrolyte solution is the carrier of battery storage energy, and liquid flow frame is the important component part of battery, being the bogey that electrolyte circulates in battery, playing the effect of standard electrolyte type of flow in cell body, is the key technology that vanadium cell enters practical stage.
Fig. 2 is for being used for traditional liquid flow frame of vanadium cell, and this liquid flow frame comprises the framework 21 of hollow, and this framework one side has plane of orientation 22 and is lower than two fluid courses 23 of this plane of orientation 22, is provided with inlet 24 and liquid outlet 25 at fluid course 23.In the running of vanadium cell, electrolyte enters the hollow space of framework 21 by inlet 24 by fluid course 23, is flowed out by liquid outlet 25 by another fluid course 23 again, and for traditional liquid flow frame, its Drain Resistance, reliability and stability are not high.Therefore, cause the vanadium cell that utilizes this liquid flow frame also to exist the not high defective of reliability and stability.
Summary of the invention
For solving the not high defective of Drain Resistance, reliability and stability that liquid flow frame exists in the prior art, one of purpose of the present invention is to provide a kind of liquid flow frame device, liquid flow frame device of the prior art is reasonably improved, to improve the efficient of power conversion, prolong vanadium cell useful life.
The vanadium cell that contains described liquid flow frame device that provides a kind of reliability higher is provided, overcomes the not high defective of existing vanadium cell reliability.
Technical solution of the present invention is:
A kind of liquid flow frame device, employing is provided with the liquid flow frame in passage, liquid mouth and liquid hole, the liquid mouth comprises inlet and liquid outlet, the liquid hole comprises inlet opening and fluid hole, the both sides of this liquid flow frame sheet frame that be arranged in parallel: sheet frame I and sheet frame II, be respectively arranged with fluid course on sheet frame I and the sheet frame II: revolution fluid course I and revolution fluid course II, Central Symmetry arranges structure between revolution fluid course I and the revolution fluid course II, each revolution fluid course is that bow type runner is distributed in the liquid flow frame both sides with bending and twice above rotating arcuate flow path.
Described liquid flow frame device, the cross section of revolution fluid course I and revolution fluid course II is close to arcuate flow path or two shapes that above arcuate flow path links together.
Described liquid flow frame device, be provided with the first inlet, the second inlet on the sheet frame I, the first fluid hole is set in the sheet frame I, revolution fluid course I is arranged between the first inlet and the first fluid hole, as the passage between the first inlet and the first fluid hole, the first inlet and the first fluid hole are connected to a side of liquid flow frame by described passage.
Described liquid flow frame device, be provided with the first liquid outlet, the second liquid outlet on the sheet frame II, the first inlet opening is set in the sheet frame II, revolution fluid course II is arranged between the first liquid outlet and the first inlet opening, as the passage between the first liquid outlet and the first inlet opening, the first liquid outlet and the first inlet opening are connected to the opposite side of liquid flow frame by described passage.
Described liquid flow frame device, the first inlet, the first liquid outlet, the second inlet and the second liquid outlet separately are arranged on four jiaos of liquid flow frame, wherein, the first inlet and the first liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame, and the second inlet and the second liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame.
A kind of vanadium cell that contains described liquid flow frame device, vanadium cell is the cascaded structure of two above cells, each cell comprises the amberplex between anodal assembly, negative pole assembly and the both positive and negative polarity assembly, uses described liquid flow frame in anodal assembly and/or the negative pole assembly.
The described vanadium cell that contains this device, anodal assembly comprises positive plate, foam felt II and liquid flow frame, the negative pole assembly comprises negative plate, foam felt I and liquid flow frame; In the left side of amberplex, amberplex, liquid flow frame, negative plate and foam felt I form the chamber that holds electrolyte; On the right side of amberplex, amberplex, liquid flow frame, positive plate and foam felt II form the chamber that holds electrolyte.
The described vanadium cell that contains this device, share a pole plate between the adjacent cell: positive plate or negative plate, a cell uses two liquid flow frames, two liquid flow frames are centrosymmetric and mutual corresponding matching, when adopting two liquid flow frames to form vanadium cell, by the sealing combination between two liquid flow frames, consist of the liquid in-out circulation road of vanadium cell both positive and negative polarity.
The described vanadium cell that contains this device in described vanadium cell, is equipped with sealing gasket between adjacent amberplex and the liquid flow frame and between the adjacent liquid flow frame.
The described vanadium cell that contains this device, in the liquid flow frame, the first inlet, the first liquid outlet, the second inlet and the second liquid outlet separately are arranged on four jiaos of liquid flow frame, wherein, the first inlet and the first liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame, and the second inlet and the second liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame; The passage of the first inlet and the first liquid outlet 32 and liquid flow frame inside, the liquid in-out mouth of formation anode electrolyte of vanadium battery; The passage of the second inlet and the second liquid outlet and liquid flow frame inside, the liquid in-out mouth of formation vanadium redox battery negative pole electrolyte; Vanadium cell also comprises electrolyte container and pump, and described electrolyte container is communicated with inlet and the liquid outlet of described liquid flow frame by pump.
Advantage of the present invention and beneficial effect are:
1, the liquid runner that is provided with bending on the liquid flow frame device of the present invention and repeatedly makes a circulation, and symmetrical centered by this fluid pipe, its cross section is similar arc, and it is reasonable in design, novel structure.
2, tortuous revolution runner is provided with a plurality of turnings among the present invention, prolong the distance that electrolyte flows in liquid flow frame, increased the effective resistance of self-discharge of battery, slowed down the speed of self discharge, avoid battery the too high situation of local voltage to occur, improved the stability of each battery cell; And when battery standing, must make the electrolyte that is flowing in the arcuate flow path fracture occur at liquid runner turning, make electrolyte and the electrolyte in other cell and the storage liquid stream device in the cell isolated, the self-discharge phenomenon of having avoided battery when being communicated with by electrolyte, to occur, when charging electricity, a large amount of electric energy will be stored in the middle of the pile self, has improved energy conversion efficiency and the combination property of vanadium cell, has prolonged the useful life of vanadium cell.
3, because liquid flow frame device provided by the present invention has preferably reliability, stability and higher efficient.Thereby vanadium cell provided by the present invention has reliability, high efficiency and stability.
Description of drawings
Fig. 1 is traditional vanadium cell schematic diagram.
Fig. 2 is traditional liquid flow frame structure chart.
Fig. 3 is liquid flow frame device schematic diagram provided by the present invention.
Fig. 4 is the schematic cross-section of vanadium cell provided by the present invention.
Fig. 5 is the schematic diagram of pole dual-pole board in the vanadium cell of the present invention.
Among the figure:
11, amberplex; 12, anode electrolyte; 13, negative pole electrolyte; 14, positive plate; 15, negative plate; 16, anode electrolyte container; 17, negative pole electrolyte container; 18, pump; 19, pump;
21 frameworks; 22 plane of orientations; 23 fluid courses; 24 inlets; 25 liquid outlets;
31 first inlets; 32 first liquid outlets; 33 second inlets; 34 second liquid outlets; 35 first fluid holes; 36 first inlet openings; 37 revolution fluid course I; 38 revolution fluid course II; 39 liquid flow frames; 391 sheet frame I; 392 sheet frame II.
41 bipolar plates; 42 sealing gaskets; 43 foam felt I; 44 foam felt II.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is further specified.
As shown in Figure 3, liquid flow frame device of the present invention adopts the liquid flow frame that is provided with passage, liquid mouth and liquid hole, the liquid mouth comprises inlet and liquid outlet, the liquid hole comprises inlet opening and fluid hole, mainly comprise: the first inlet 31, the first liquid outlet 32, the second inlet 33, the second liquid outlet 34, the first fluid hole 35, the first inlet opening 36, revolution fluid course I 37, revolution fluid course II 38, liquid flow frame 39 etc., concrete structure is as follows:
The both sides of this liquid flow frame 39 sheet frame (sheet frame I 391 and sheet frame II 392) that be arranged in parallel, be respectively arranged with fluid course (revolution fluid course I 37 and revolution fluid course II 38) on sheet frame I 391 and the sheet frame II 392, Central Symmetry arranges structure between revolution fluid course I 37 and the revolution fluid course II 38, each revolution fluid course is that bow type runner is distributed in the liquid flow frame both sides with bending and twice above rotating arcuate flow path.
Be provided with the first inlet 31, the second inlet 33 on the sheet frame I 391, sheet frame I 391 interior first fluid holes 35 that arrange, revolution fluid course I 37 is arranged between the first inlet 31 and the first fluid hole 35, as the passage between the first inlet 31 and the first fluid hole 35, the first inlet 31 and the first fluid hole 35 are connected to a side of liquid flow frame 39 by described passage;
Be provided with the first liquid outlet 32, the second liquid outlet 34 on the sheet frame II 392, sheet frame II 392 interior first inlet openings 36 that arrange, revolution fluid course II 38 is arranged between the first liquid outlet 32 and the first inlet opening 36, as the passage between the first liquid outlet 32 and the first inlet opening 36, the first liquid outlet 32 and the first inlet opening 36 are connected to the opposite side of liquid flow frame 39 by described passage;
The first inlet 31, the first liquid outlet 32, the second inlet 33 and the second liquid outlet 34 separately are arranged on four jiaos of liquid flow frame 39, wherein, the first inlet 31 and the first liquid outlet 32 are in the corresponding setting in the diagonal place of liquid flow frame 39, and the second inlet 33 and the second liquid outlet 34 are in the corresponding setting in the diagonal place of liquid flow frame 39.When two liquid flow frames 39 form a cell, will be respectively applied to anode electrolyte circulation and negative pole circulate electrolyte, the liquid flow frame that liquid flow frame is flowed through as anode electrolyte, the negative pole circulate electrolyte is in like manner.
Such as Fig. 3-shown in Figure 4, vanadium cell can be the cascaded structure of two above cells, each cell comprises the amberplex between anodal assembly, negative pole assembly and the both positive and negative polarity assembly, anodal assembly comprises positive plate 14, foam felt II 44 and liquid flow frame 39, and the negative pole assembly comprises negative plate 15, foam felt I 43 and liquid flow frame 39; In the left side of amberplex 11, amberplex 11, liquid flow frame 39, negative plate 15 and foam felt I 43 form the chamber that holds electrolyte; On the right side of amberplex 11, amberplex 11, liquid flow frame 39, positive plate 14 and foam felt II 44 form the chamber that holds electrolyte; Amberplex 11, foam felt I 43 and foam felt II 44 directly contact with electrolyte, to allow the carrying out of electrochemical reaction.
Share a pole plate (positive plate 14 or negative plate 15) between the adjacent cell, a cell uses two liquid flow frames 39, two liquid flow frames 39 are centrosymmetric and mutual corresponding matching, when adopting two liquid flow frames to form vanadium cell, by the sealing combination between two liquid flow frames, consist of the liquid in-out circulation road of vanadium cell both positive and negative polarity.In described battery pack, between adjacent amberplex 11 and the liquid flow frame 39 and between the adjacent liquid flow frame 39 sealing gasket 42 is installed, play sealing function.
Wherein, the liquid flow frame described in anodal assembly and/or the negative pole assembly is above-mentioned liquid flow frame provided by the present invention.In the liquid flow frame, the first inlet 31 is communicated with the passage of liquid flow frame 39 inside with the first liquid outlet 32, consists of the liquid in-out mouth of anode electrolyte of vanadium battery 12.The second inlet 33 is communicated with the passage of liquid flow frame 39 inside with the second liquid outlet 34, consist of the liquid in-out mouth of vanadium redox battery negative pole electrolyte 13.
Such as Fig. 4-shown in Figure 5, positive plate 14 both sides that share arrange foam felt II 44, form pole dual-pole board 41, are convenient to the assembling of vanadium cell, can improve the production efficiency of assembling.Foam felt II 44 is the foaming structure of porous, has larger surface area, can fully react with the electrolyte that is penetrated in the felt film.
Among the present invention, vanadium cell also comprises electrolyte container and pump, and described electrolyte container is communicated with inlet and the liquid outlet of described liquid flow frame by pump.
The course of work of liquid flow frame is among the present invention:
Electrolyte enters liquid flow frame 39 from the first inlet 31, pass through arcuate flow path in liquid flow frame 39 inside, flow in the direction of arrows and arrive the first inlet opening 36, enter pile (battery pack) inside by the first inlet opening 36 again, after electrode reaction is carried out in pile inside, reenter liquid flow frame 39 by the first inlet opening 36 again, flowing in the direction of arrows by arcuate flow path arrives the first liquid outlet 32, then arrive fluid reservoir by the first liquid outlet 32, driving device is external pump.Liquid flow frame 39 adopts two arcuate flow path at least: revolution fluid course I 37 and revolution fluid course II 38, and revolution fluid course I 37 is identical and symmetrical with revolution fluid course II 38 structures, and setting is centrosymmetric.The concrete structure of liquid flow frame 39 increases electrolyte at the flow path of liquid flow frame inside, has increased electrolyte and has formed electric leakage branch road resistance, and leakage current causes the speed of electrode corrosion, has prolonged the useful life of battery, has improved the battery utilization ratio.
Liquid flow frame cooperates with electrode as the part of pile.Each battery cell uses two liquid flow frames, four liquid mouths of liquid flow frame play a role respectively, electrolyte is from the first inlet process bow type runner design so that the flow resistance that increases is minimum, can guarantee well battery operation efficient, and prevent the appearance of flow dead, thereby can improve the combination property of vanadium cell, guarantee stability and the efficient of vanadium cell operation.
By above description to execution mode as can be known, liquid flow frame provided by the present invention has higher stability, reliability and high efficiency, simultaneously correspondingly, comprises that the vanadium cell hole of this liquid flow frame has higher stability, reliability and high efficiency.
Claims (10)
1. liquid flow frame device, employing is provided with passage, the liquid flow frame in liquid mouth and liquid hole, the liquid mouth comprises inlet and liquid outlet, the liquid hole comprises inlet opening and fluid hole, it is characterized in that: the both sides of this liquid flow frame sheet frame that be arranged in parallel: sheet frame I and sheet frame II, be respectively arranged with fluid course on sheet frame I and the sheet frame II: revolution fluid course I and revolution fluid course II, Central Symmetry arranges structure between revolution fluid course I and the revolution fluid course II, each revolution fluid course is that bow type runner is distributed in the liquid flow frame both sides with bending and twice above rotating arcuate flow path.
2. according to liquid flow frame device claimed in claim 1, it is characterized in that: the cross section of revolution fluid course I and revolution fluid course II is close to arcuate flow path or two shapes that above arcuate flow path links together.
3. according to liquid flow frame device claimed in claim 1, it is characterized in that: be provided with the first inlet, the second inlet on the sheet frame I, the first fluid hole is set in the sheet frame I, revolution fluid course I is arranged between the first inlet and the first fluid hole, as the passage between the first inlet and the first fluid hole, the first inlet and the first fluid hole are connected to a side of liquid flow frame by described passage.
4. according to liquid flow frame device claimed in claim 1, it is characterized in that: be provided with the first liquid outlet, the second liquid outlet on the sheet frame II, the first inlet opening is set in the sheet frame II, revolution fluid course II is arranged between the first liquid outlet and the first inlet opening, as the passage between the first liquid outlet and the first inlet opening, the first liquid outlet and the first inlet opening are connected to the opposite side of liquid flow frame by described passage.
5. according to claim 3 or 4 described liquid flow frame devices, it is characterized in that: the first inlet, the first liquid outlet, the second inlet and the second liquid outlet separately are arranged on four jiaos of liquid flow frame, wherein, the first inlet and the first liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame, and the second inlet and the second liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame.
6. vanadium cell that contains liquid flow frame device claimed in claim 1, it is characterized in that: vanadium cell is the cascaded structure of two above cells, each cell comprises the amberplex between anodal assembly, negative pole assembly and the both positive and negative polarity assembly, uses described liquid flow frame in anodal assembly and/or the negative pole assembly.
7. according to the vanadium cell that contains this device claimed in claim 6, it is characterized in that: anodal assembly comprises positive plate, foam felt II and liquid flow frame, and the negative pole assembly comprises negative plate, foam felt I and liquid flow frame; In the left side of amberplex, amberplex, liquid flow frame, negative plate and foam felt I form the chamber that holds electrolyte; On the right side of amberplex, amberplex, liquid flow frame, positive plate and foam felt II form the chamber that holds electrolyte.
8. according to the vanadium cell that contains this device claimed in claim 6, it is characterized in that: share a pole plate between the adjacent cell: positive plate or negative plate, a cell uses two liquid flow frames, two liquid flow frames are centrosymmetric and mutual corresponding matching, when adopting two liquid flow frames to form vanadium cell, by the sealing combination between two liquid flow frames, consist of the liquid in-out circulation road of vanadium cell both positive and negative polarity.
9. according to the vanadium cell that contains this device claimed in claim 6, it is characterized in that: in described vanadium cell, between adjacent amberplex and the liquid flow frame and between the adjacent liquid flow frame sealing gasket is installed.
10. according to the vanadium cell that contains this device claimed in claim 6, it is characterized in that: in the liquid flow frame, the first inlet, the first liquid outlet, the second inlet and the second liquid outlet separately are arranged on four jiaos of liquid flow frame, wherein, the first inlet and the first liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame, and the second inlet and the second liquid outlet are in the corresponding setting in the diagonal place of liquid flow frame; The passage of the first inlet and the first liquid outlet 32 and liquid flow frame inside, the liquid in-out mouth of formation anode electrolyte of vanadium battery; The passage of the second inlet and the second liquid outlet and liquid flow frame inside, the liquid in-out mouth of formation vanadium redox battery negative pole electrolyte; Vanadium cell also comprises electrolyte container and pump, and described electrolyte container is communicated with inlet and the liquid outlet of described liquid flow frame by pump.
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| CN2012105406830A CN103022542A (en) | 2012-12-13 | 2012-12-13 | Liquid flow frame device and vanadium cell containing same |
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| CN2012105406830A CN103022542A (en) | 2012-12-13 | 2012-12-13 | Liquid flow frame device and vanadium cell containing same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103390759A (en) * | 2013-08-13 | 2013-11-13 | 湖南省银峰新能源有限公司 | Liquid flow frame structure for flow cell and electric pile formed by flow cell |
| CN108933270A (en) * | 2017-05-25 | 2018-12-04 | 神华集团有限责任公司 | Flow battery and liquid stream battery stack |
| CN109997269A (en) * | 2017-11-02 | 2019-07-09 | 住友电气工业株式会社 | Redox flow batteries |
| US11011759B2 (en) | 2015-04-30 | 2021-05-18 | Standard Energy Co., Ltd. | Redox flow battery |
| CN115441032A (en) * | 2022-09-30 | 2022-12-06 | 湖南省银峰新能源有限公司 | Flow battery and electric pile |
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| CN203085686U (en) * | 2012-12-13 | 2013-07-24 | 朝阳华鼎储能技术有限公司 | Liquid flow frame device and vanadium battery with same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103390759A (en) * | 2013-08-13 | 2013-11-13 | 湖南省银峰新能源有限公司 | Liquid flow frame structure for flow cell and electric pile formed by flow cell |
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Application publication date: 20130403 |