CN103367776A - Diaphragm and galvanic pile of flow cell, and sealing method for galvanic pile - Google Patents
Diaphragm and galvanic pile of flow cell, and sealing method for galvanic pile Download PDFInfo
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- CN103367776A CN103367776A CN2013103171981A CN201310317198A CN103367776A CN 103367776 A CN103367776 A CN 103367776A CN 2013103171981 A CN2013103171981 A CN 2013103171981A CN 201310317198 A CN201310317198 A CN 201310317198A CN 103367776 A CN103367776 A CN 103367776A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention relates to a diaphragm and a galvanic pile of a flow cell, and a sealing method for the galvanic pile, and belongs to the field of flow cells. A diaphragm of the flow cell is provided with a diaphragm electrolyte channel for circulation of electrolyte, and the channel is provided with an isolation seal part for isolation of the diaphragm and the electrolyte. By employing the seal part disposed at the inner side of the electrolyte channel of the diaphragm, the isolation of the diaphragm and the electrolyte is realized at the electrolyte channel; the generation probability of electric leakage from the cell interior to the channel, which is caused by the diaphragm as the conductive medium, is eliminated; and thus the phenomena of damages to the diaphragm and seal, which are caused by electrolyte crystallization nearby the electrolyte channel, are minimized. According to the diaphragm and the galvanic pile of the flow cell, and according to the sealing method for the galvanic pile, the inner leakage generation probability is minimized, and the service life of the galvanic pile is prolonged.
Description
Technical field
The present invention relates to a kind of barrier film, pile and pile encapsulating method of flow battery, belong to the flow battery field.
Background technology
Electric energy is difficult to store and is indispensable, and any moment, its production all will be satisfied need for electricity, so people are seeking not only economy but also feasible energy storage technology always, solves the contradiction between the supply and demand, so that the production and need of electric energy breaks off relations.Power storage is at aspect important roles such as electric energy management, electrical network assistant service, voltage control, utilization of regenerative energy, large-scale uninterrupted power supplys in addition, if with the large-scale thermal power associating, can reduce the power station peaking capacity, reduce cost of electricity-generating and reduce and pollute.If with renewable energy power generation associatings such as wind-force, tidal energys, can realize that the continuous and stable of electric energy is supplied with, meet consumers' demand.Because flow battery has power and separates with capacity, be easy to design, easy to operate, become gradually one of first-selection of the most promising big-and-middle-sized scale electrical power storage.Wherein, all-vanadium flow battery enjoys favor.
At present flow cell pile adopts structure of pressing filter more, and its reliability largely is limited in seal aspect, and the sealing means of pile comprises twisted wire sealing, the sealing of sheet face, gluing, welding or groove cooperation etc. at present.If do not carry out independent insulation processing at the diaphragm electrolyte runner place that barrier film is used for circulation electrolyte in the practice, after the long-term use of pile, the situation of electrolyte leakage will occur in diaphragm electrolyte runner place, like this, barrier film can be used as conducting medium and causes the electric leakage that occurs from pile inside to runner, at the positive pole place vanadic oxide crystallization can occur, the serious problems of failure barrier film and other hermetically-sealed constructions; Can occur equally the crystallization of vanadium at negative pole, affect the life-span of pile.
Summary of the invention
To have problems in order solving on the above-mentioned flow battery, to the invention provides a kind of barrier film of flow battery and use the pile of this barrier film.
A kind of barrier film of flow battery, described barrier film are provided with the diaphragm electrolyte runner for circulation electrolyte, and described runner is provided with the isolating seal parts for isolation diaphragm and electrolyte.
Pile mainly is made of barrier film, bipolar plates, positive and negative electrode, electrode frame, end plate, seal and securing member.Wherein, electrode frame is hollow structure, inside is respectively equipped with positive and negative electrode, be provided with the barrier film for ion-exchange between the positive and negative electrode, be provided with the gasket seal for seal dissepiment and electrode frame between barrier film and electrode frame, the overall dimension of sealing pad is identical with the overall dimension of electrode frame and barrier film.Be equipped with the electrolyte channel of electrolysis liquid circulation at barrier film, electrode frame and gasket seal.Technical scheme of the present invention is: be provided with isolating seal parts for isolation diaphragm and electrolyte at described diaphragm electrolyte runner.The sealing parts are realized the insulation of barrier film and electrolyte at the electrolyte channel place, can eradicate a mental barrier cause as conducting medium the electric leakage that occurs from inside battery to runner may, thereby reduce near electrolyte crystallization and the phenomenon of barrier film and sealing occurs destroying this.
Isolating seal parts of the present invention are preferably the sealing ring of being located at diaphragm electrolyte runner inboard.
Preferred technical scheme of the present invention is: a kind of barrier film of flow battery, described barrier film is provided with the diaphragm electrolyte runner for circulation electrolyte, described runner is provided with the sealing ring for isolation diaphragm and electrolyte, and described sealing ring is the sealing ring that is fixed in on the gasket seal of seal dissepiment and electrode frame.
In the technique scheme, described sealing ring for isolation diaphragm electrolyte channel and electrolyte is the sealing ring that is fixed on the gasket seal, and the sealing circle can be fixed together by the modes such as one processing and gasket seal.The sealing circle be one be higher than the gasket seal plane platform, the present invention is preferably ring-shaped platform.When assembling, the sealing circle is inserted in the diaphragm electrolyte runner, at the opposite side of barrier film another gasket seal is set, this pad is provided with the measure-alike through hole in size and sealing ring outer ring, sealing ring is inserted in the sealing pad, the three is fixed together.
Another preferred technical scheme of the present invention is: a kind of barrier film of flow battery, described barrier film is provided with the diaphragm electrolyte runner for circulation electrolyte, described runner is provided with the sealing ring for isolation diaphragm and electrolyte, and described sealing ring is the independently sealing ring of being located at diaphragm electrolyte runner inboard.
Technique scheme is a kind of preferred embodiment to be: when assembling, the sealing circle is inserted in the diaphragm electrolyte runner, arrange in the both sides of barrier film gasket seal is set respectively, be equipped with the measure-alike through hole in size and sealing ring outer ring on two pads, utilize the gasket seal of barrier film both sides that the three is fixed together.
Technique scheme another preferred embodiment is: when assembling, the sealing circle is inserted in the diaphragm electrolyte runner, arrange in the both sides of barrier film gasket seal is set respectively, be equipped with through hole on above-mentioned two pads, the internal diameter of through hole is identical with the external diameter of sealing ring on one of them gasket seal, the internal diameter of through hole utilizes the gasket seal of barrier film both sides that the three is fixed together less than the internal diameter of sealing ring on another gasket seal.
In all technical schemes of barrier film of the present invention all the size of preferred described sealing ring be not more than the size of diaphragm electrolyte runner, the size of further preferred sealing ring equals the size of diaphragm electrolyte runner.
In all technical schemes of barrier film of the present invention all the axial width of preferred described sealing ring be not less than the thickness of barrier film, further the axial width of preferred described sealing ring is greater than the thickness of barrier film.
In all technical schemes of barrier film of the present invention all preferred described isolating seal parts made by insulating material, be preferably silicon rubber, ethylene propylene diene rubber, fluorubber is preferably fluorubber
Another object of the present invention provides a kind of pile of using above-mentioned barrier film.
A kind of pile of flow battery, described pile comprises barrier film and is used for sealing gasket I and the sealing gasket I I of seal dissepiment and electrode frame, be fixed with sealing ring in described sealing gasket I, described sealing gasket I I is provided with the through hole that matches with sealing ring outer ring size, and sealing gasket I, barrier film and sealing gasket I I are fixing by sealing ring being inserted in the through hole on diaphragm electrolyte runner and the sealing gasket I I successively.
Another purpose of the present invention provides a kind of encapsulating method of flow cell pile.
A kind of encapsulating method of flow cell pile is to utilize the isolating seal parts barrier film to be used for diaphragm electrolyte runner and the electrolyte isolation of circulation electrolyte.
Beneficial effect of the present invention is: the present invention adopts the electrolyte channel inboard of barrier film that seal member is set, realize the insulation of barrier film and electrolyte at the electrolyte channel place, eradicate a mental barrier cause as conducting medium the electric leakage that occurs from inside battery to runner may, thereby reduce near electrolyte crystallization and the phenomenon of barrier film and sealing occurs destroying this.Can reduce interior leakage occurrence probability by the present invention, prolong the life-span of pile.
Description of drawings
Fig. 1 is the assembling electrolyte channel place partial enlarged drawing of sealing gasket I/barrier film among the embodiment 1/sealing gasket I I;
Fig. 2 is the front view of sealing gasket I among the embodiment 1;
Fig. 3 is the cutaway view at A-A place among Fig. 2;
Fig. 4 is the front view of sealing gasket I I among the embodiment 1;
Fig. 5 is the front view of embodiment 1 septation;
Fig. 6 is the assembling electrolyte channel place partial enlarged drawing of sealing gasket I II/ barrier film/sealing gasket I V among the embodiment 2;
Reference numeral is as follows: 1, barrier film, 101, electrolyte channel, 2, sealing gasket I, 201, sealing ring I, 202, sealing ring II, 3, sealing gasket I I, 301, through hole, 4, sealing gasket I II, 5, sealing gasket I V.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
A kind of barrier film of flow battery, described barrier film 1 is provided with the electrolyte channel 101 for circulation electrolyte, described runner 101 is provided with the sealing ring I201 for isolation diaphragm and electrolyte, described sealing ring I201 for be fixed in by the one processing mode on the sealing gasket I 2 of seal dissepiment 1 and electrode frame with diaphragm electrolyte runner 101 opposite positions on sealing ring I201.
Utilize the pile of above-mentioned barrier film 1 assembling flow battery, described pile comprises barrier film 1 and is used for sealing gasket I 2 and the sealing gasket I I3 of seal dissepiment 1 and electrode frame, described sealing gasket I 2 is provided with sealing ring I201 with diaphragm electrolyte runner 101 opposite positions, sealing ring I201 and sealing gasket I 2 are structure as a whole, described sealing gasket I I3 is provided with the through hole 301 that matches with sealing ring I201 outer ring size, sealing gasket I 2, barrier film 1 and sealing gasket I I(3) fixing by sealing ring I201 being inserted in the through hole 301 on diaphragm electrolyte runner 101 and the sealing gasket I I3 successively.The size of described sealing ring I201 equals the size of diaphragm electrolyte runner 101, and axial width is greater than the thickness of barrier film 1.
The all parts dimensional parameters is as follows:
Electrode area: 875cm
2
Monocell number: 20
Bipolar plates size: 300 * 400mm
Electrode frame size: 300 * 400mm
Test adopts constant current 70A to discharge and recharge; Pile charging/discharging voltage efficient 86%, coulombic efficiency 93.2%, energy efficiency 80.1%.Take observation after March apart, intact at barrier film and sealing, the electrolyte stream road junction pentavalent vanadium do not occur and trivalent vanadium is separated out and crystallization.
A kind of barrier film of flow battery, described barrier film 1 is provided with the electrolyte channel 101 for circulation electrolyte, described runner 101 is provided with the sealing ring II202 for isolation diaphragm and electrolyte, and described sealing ring II202 is the independently sealing ring II202 that is located at electrolyte channel 101 inboards of barrier film 1.
Utilize the pile of above-mentioned barrier film 1 assembling flow battery, described pile comprises barrier film 1 and is used for sealing gasket I II4 and the sealing gasket I V5 of seal dissepiment 1 and electrode frame, the internal diameter of the upper through hole of sealing gasket I II4 is identical with the external diameter of sealing ring II202, the internal diameter of the upper through hole of sealing gasket I V5 utilizes the sealing gasket I II4 of barrier film 1 both sides and sealing gasket I V5 that the three is fixed together less than the internal diameter of sealing ring II202.The axial width of described sealing ring II202 is greater than the thickness of barrier film 1.
The all parts dimensional parameters is as follows:
Electrode area: 1700cm
2
Monocell number: 15
Bipolar plates size: 400 * 500mm
Electrode frame size: 400 * 500mm
Test adopts constant current 150A to discharge and recharge; Pile charging/discharging voltage efficient 87%, coulombic efficiency 92.8%, energy efficiency 80.5%.Take observation after March apart, intact at barrier film and sealing, the electrolyte stream road junction pentavalent vanadium do not occur and trivalent vanadium is separated out and crystallization.
Claims (9)
1. the barrier film of a flow battery, described barrier film are provided with the diaphragm electrolyte runner for circulation electrolyte, and it is characterized in that: described runner is provided with the isolating seal parts for isolation diaphragm and electrolyte.
2. barrier film according to claim 1, it is characterized in that: described isolating seal parts are the sealing ring of being located at diaphragm electrolyte runner inboard.
3. barrier film according to claim 2, it is characterized in that: described sealing ring is the sealing ring that is fixed in on the gasket seal of seal dissepiment and electrode frame.
4. barrier film according to claim 2, it is characterized in that: described sealing ring is the independently sealing ring of being located at diaphragm electrolyte runner inboard.
5. according to claim 3 or 4 described barrier films, it is characterized in that: the size of described sealing ring is not more than the size of diaphragm electrolyte runner.
6. according to claim 3 or 4 described barrier films, it is characterized in that: the axial width of described sealing ring is not less than the thickness of barrier film.
7. barrier film according to claim 1, it is characterized in that: described isolating seal parts are made by insulating material.
8. the pile of a flow battery, it is characterized in that: described pile comprises barrier film and is used for sealing gasket I and the sealing gasket I I of seal dissepiment and electrode frame, be fixed with sealing ring in described sealing gasket I, described sealing gasket I I is provided with the through hole that matches with sealing ring outer ring size, and sealing gasket I, barrier film and sealing gasket I I are fixing by sealing ring being inserted in the through hole on diaphragm electrolyte runner and the sealing gasket I I successively.
9. the encapsulating method of a flow cell pile is characterized in that: utilize the isolating seal parts barrier film to be used for diaphragm electrolyte runner and the electrolyte isolation of circulation electrolyte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310317198.1A CN103367776B (en) | 2013-07-23 | 2013-07-23 | A kind of barrier film of flow battery, pile and pile encapsulating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310317198.1A CN103367776B (en) | 2013-07-23 | 2013-07-23 | A kind of barrier film of flow battery, pile and pile encapsulating method |
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| CN103367776A true CN103367776A (en) | 2013-10-23 |
| CN103367776B CN103367776B (en) | 2017-07-14 |
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| CN201310317198.1A Active CN103367776B (en) | 2013-07-23 | 2013-07-23 | A kind of barrier film of flow battery, pile and pile encapsulating method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400366A (en) * | 2018-03-09 | 2018-08-14 | 上海电气集团股份有限公司 | Sealing structure and flow battery comprising it |
| CN118352588A (en) * | 2024-06-18 | 2024-07-16 | 液流储能科技有限公司 | Ion conducting membrane and preparation method and application thereof |
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| CN1531761A (en) * | 2001-06-12 | 2004-09-22 | ס�ѵ�����ҵ��ʽ���� | Cell frame for redox flow cell and redox flow cell |
| US20070264557A1 (en) * | 2004-10-08 | 2007-11-15 | Susumu Kobayashi | Mea-Gasket Assembly and Polymer Electrolyte Fuel Cell Using Same |
| CN101667646A (en) * | 2008-09-03 | 2010-03-10 | 中国科学院大连化学物理研究所 | Electrode frame structure for redox flow cell |
| CN102394281A (en) * | 2011-11-22 | 2012-03-28 | 深圳市金钒能源科技有限公司 | Vanadium flow cell seal ring and ionic membrane integrated assembly and electric pile |
| CN103125040A (en) * | 2010-06-29 | 2013-05-29 | 斯奎勒尔控股有限公司 | Compact frameless bipolar stack for a multicell electrochemical reactor with planar bipolar electrical interconnects and internal ducting of circulation of electrolyte solutions through all respective cell compartments |
-
2013
- 2013-07-23 CN CN201310317198.1A patent/CN103367776B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1531761A (en) * | 2001-06-12 | 2004-09-22 | ס�ѵ�����ҵ��ʽ���� | Cell frame for redox flow cell and redox flow cell |
| US20070264557A1 (en) * | 2004-10-08 | 2007-11-15 | Susumu Kobayashi | Mea-Gasket Assembly and Polymer Electrolyte Fuel Cell Using Same |
| CN101667646A (en) * | 2008-09-03 | 2010-03-10 | 中国科学院大连化学物理研究所 | Electrode frame structure for redox flow cell |
| CN103125040A (en) * | 2010-06-29 | 2013-05-29 | 斯奎勒尔控股有限公司 | Compact frameless bipolar stack for a multicell electrochemical reactor with planar bipolar electrical interconnects and internal ducting of circulation of electrolyte solutions through all respective cell compartments |
| CN102394281A (en) * | 2011-11-22 | 2012-03-28 | 深圳市金钒能源科技有限公司 | Vanadium flow cell seal ring and ionic membrane integrated assembly and electric pile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108400366A (en) * | 2018-03-09 | 2018-08-14 | 上海电气集团股份有限公司 | Sealing structure and flow battery comprising it |
| CN108400366B (en) * | 2018-03-09 | 2024-02-20 | 上海电气(安徽)储能科技有限公司 | Sealing structure and flow battery comprising same |
| CN118352588A (en) * | 2024-06-18 | 2024-07-16 | 液流储能科技有限公司 | Ion conducting membrane and preparation method and application thereof |
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| Publication number | Publication date |
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| CN103367776B (en) | 2017-07-14 |
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