CN103840180B - A kind of flow battery linear sealing structure with self-locating function - Google Patents
A kind of flow battery linear sealing structure with self-locating function Download PDFInfo
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- CN103840180B CN103840180B CN201210484865.0A CN201210484865A CN103840180B CN 103840180 B CN103840180 B CN 103840180B CN 201210484865 A CN201210484865 A CN 201210484865A CN 103840180 B CN103840180 B CN 103840180B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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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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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to a kind of flow battery linear sealing structure with self-locating function, ring-type linear sealing groove it is provided with on electrode of liquid flow cell frame, wherein linear sealing groove is two ringed lines with the intersection on electrode frame surface, in electrode frame plane, the center line of two ringed lines is axis, on the cross section of the seal groove being perpendicular to this axis, the width of the seal groove at the one of side, electrode frame surface side is less than the width of the seal groove between arriving away from side, electrode frame surface side herein.This kind has the flow battery linear sealing structure of self-locating function and not only seals reliably, facilitate hookup wire sealing joint strip, prevent kink and the dislocation of adhesive tape, reduce pile build-up member, improve dress heap efficiency, simultaneously during pile dismounting and reassembling, what sealing strip can consolidate is positioned in seal groove, improves the efficiency repeatedly assembled.
Description
Technical field
The present invention relates to the electric pile structure of flow battery, particularly to the sealing structure of pile.
Background technology
The energy is the mainstay promoting modern social development all the time, along with the raising of civilization degree, the most day by day increases the demand of the energy.Fossil energy is faced with the danger of exhaustion, regenerative resource in recent years as a kind of non-renewable energy resources, has obtained swift and violent development including solar energy, wind energy, tide energy etc., gradually has the trend replacing traditional energy.But regenerative resource feature unstable, discontinuous determines its work that can be normal, effective, safe in the grid-connected middle regulation needing pilot process of electric power, and energy storage solves the key technology of this problem just and gradually obtains the attention of various countries.Redox flow batteries is that a kind of utilization has the oxidation-reduction reaction of different valence state element and carries out the storage of energy and the electrochemical energy storage device of conversion, discontinuous, unstable input can be converted into continuous, stable, safe output, reduce the impact to intelligent grid, overcome the applied defect of regenerative resource.
Flow battery generally uses the form of pressure filter to assemble, that is: monocell is formed by the sealing structure between collector plate, electrode, electrode frame, barrier film, electrode frame, electrode, collector plate and collector plate and electrode frame, electrode frame and barrier film, and more piece monocell collector plate is composed in series pile, the both sides of pile are furnished with end plate, corresponding screwed hole it is machined with on it, by the spring on compression screw rod, pile is compressed, the requirement of compression and sealing force to meet electrode.For flow cell pile, sealing is to affect Performance data, determines the key factor in pile life-span.Low cost, the seal means of high reliability the most all carried out trial on flow cell pile, and from the face seal of elastomeric material and linear sealing to laser welding, purpose is all to improve sealing reliability, reduces the difficulty of pile assembling, extends the pile life-span.It is less that face seal compression area under conditions of sealing effectiveness is suitable is compared in linear sealing, can effectively reduce number of springs or reduce spring rate, comparing laser welding cost lower simultaneously, can repeatedly dismantle use, and motility is more preferable.But it is limited by sealing strip orientation problem in seal groove, easily causes kink and the dislocation of adhesive tape during assembling, cause seal failure.Using binding agent can contribute to location to a certain extent in sealing strip is bonded in seal groove, increasable operation can improve again mechanically or manually cost.Therefore, design has the linear sealing structure of self-locating function is the most effective and the simplest and the most direct method solving linear sealing application.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of flow cell pile linear sealing structure with self-locating function.
For reaching above-mentioned purpose, the technical solution used in the present invention is:
A kind of flow battery linear sealing structure with self-locating function, wherein: on electrode of liquid flow cell frame, be provided with ring-type linear sealing groove, wherein linear sealing groove is two ringed lines with the intersection on electrode frame surface, in electrode frame plane, the center line of two ringed lines is axis, on the cross section of the seal groove being perpendicular to this axis, the width of the seal groove at the one of side, electrode frame surface side is less than the width of the seal groove between arriving away from side, electrode frame surface side herein；
The above-mentioned flow battery linear sealing structure with self-locating function, wherein: on the radial section of corresponding ring-type linear sealing adhesive tape, the width of the seal groove at the one of side, electrode frame surface is less than the width of the linear sealing adhesive tape between arriving away from side, electrode frame surface side herein；
The above-mentioned flow battery linear sealing structure with self-locating function, wherein: realize sealing in adhesive tape is pressed into during assembling seal groove；
The above-mentioned flow battery linear sealing structure with self-locating function, wherein: the shape of cross section of described seal groove is that swallow-tail form, central angle are more than the sector of 180 degree and trapezoidal；Corresponding linear sealing adhesive tape cross sectional shape radially is circular, oval and trapezoidal；
Seal groove in the above-mentioned flow battery linear sealing structure with self-locating function and sealing joint strip, wherein: the cross section of described seal groove be swallow-tail form, the central angle sector more than 180 degree, trapezoidal in two kinds of combination of the above, or rectangle combines with a kind of in them；Corresponding linear sealing adhesive tape cross sectional shape radially be circular, oval and trapezoidal in two kinds of combination of the above, or rectangle and a kind of combination in them；
Away from the seal groove structure of side, electrode frame surface as locating slot, seal groove structure near side, electrode frame surface is as sealed groove, locating slot and sealed groove coaxial line, locating slot shape of cross section be swallow-tail form, central angle more than 180 degree sector, trapezoidal in one, being provided with upper and lower double-layer structure accordingly on work seal bar cross section radially, upper strata is the sealing adhesive tape being assemblied in seal groove；Lower floor is the location adhesive tape being assemblied in locating slot, location adhesive tape shape of cross section radially be circular, oval and trapezoidal in one, during assembling, the lower floor of linear sealing bar being positioned adhesive tape to be pressed in locating slot, sealing adhesive tape and location adhesive tape are integral type structure；
Above two has the flow battery linear sealing structure of self-locating function, wherein: electrode frame is front with the side of runner, and side in contrast is reverse side；Electrode frame front and reverse side are provided with the above-mentioned linear sealing groove with self positioning structure.Electrode frame obverse and reverse will be parallel to, and any point becomes perspective plane to front and the equidistant plane of reverse side on it, as described in claim 1 the axis of electrode frame front and the seal groove of reverse side projection line on the projection surface is completely superposed, or mutual dislocation, dislocation value is 0mm-20mm；
Above two has the flow battery linear sealing structure of self-locating function, wherein: the liquid in-out mouth in electrode frame is provided with the closing adhesive tape structure of anti-internal hemorrhage due to trauma accordingly, this structure can be annular, it is also possible to be rectangle with holes, any enclosed shape the most with holes.
Above two has the flow battery linear sealing structure of self-locating function, wherein: the electrode frame with self positioning structure uses engraving or injection molding manner processing；
Above two has the flow battery linear sealing structure of self-locating function, wherein: electrode frame receptacle material is polyethylene, polypropylene, polrvinyl chloride, ABS or glass fiber enhanced polypropylene.
Above two has the flow battery linear sealing structure of self-locating function, wherein: the compression ratio of sealing joint strip is 5%-60%；
Above two has the flow battery linear sealing structure of self-locating function, wherein: the material of the sealing joint strip matched with self positioning structure is the acid corrosion-resistant rubber such as fluorubber or ethylene propylene diene rubber；
Present invention have the advantage that
1. the present invention is by arranging the seal groove with self-locating function in electrode frame, location is completed by having in the sealing joint strip indentation sealing groove of corresponding construction and locating slot, conveniently, the orientation problem of linear sealing is simply solved, also prevent electrode frame the coming off of sealing strip during mobile or upset simultaneously, solve the fixation problem of adhesive tape.
2. the linear sealing structure with self-locating function of present invention design, it is prevented from sealing joint strip kink in locating slot and dislocation, avoid sealed film in face seal to shift or adhesive sealing bar is insecure, the problem of dislocation occurs, and the electrode frame being designed with self-locating function seal groove also can repeatedly be assembled and ensure that sealing strip does not falls off, reliability is high, decreases the time spending in sealing in repeatedly assembling.
3. the linear sealing structure with self-locating function of present invention design decreases seal pressure, reduces spring heights and number of springs, simplifies linkage editor, improves efficiency of assembling.
Accompanying drawing explanation
Fig. 1 the first there is the linear sealing structural representation of self-locating function: (1) seal groove cross section is swallow-tail form, and corresponding sealing joint strip cross section is circular；(2) seal groove cross section is trapezoidal with chamfering, and corresponding sealing joint strip cross section is rectangle；
Fig. 2 the second has the linear sealing structural representation of self-locating function: (1) locating slot cross section is swallow-tail form, and seal groove cross section is rectangle, and corresponding sealing adhesive tape cross section is rectangle, and adhesive tape cross section, location is circular；(2) locating slot cross section is trapezoidal with chamfering, and seal groove cross section is rectangle, and corresponding sealing adhesive tape cross section is rectangle, and adhesive tape cross section, location is trapezoidal；
The seal groove of Fig. 3 electrode frame both sides and the linear sealing structure of locating slot axial offset arrange schematic diagram: the linear sealing trench pattern figure of (1) electrode frame；(2) A-A sectional drawing；
The linear sealing structure that the seal groove of Fig. 4 electrode frame both sides is identical with locating slot axis arranges schematic diagram: the linear sealing trench pattern figure of (1) electrode frame；(2) A-A sectional drawing.
Detailed description of the invention
Below in conjunction with Fig. 1-Fig. 4 and embodiment, the present invention is further detailed:
See figures.1.and.2, a kind of linear sealing structure with self-locating function that wherein Fig. 1 shows.Electrode of liquid flow cell frame is provided with ring-type linear sealing groove, wherein linear sealing groove is two ringed lines with the intersection on electrode frame surface, in electrode frame plane, the center line of two ringed lines is axis, on the cross section of the seal groove being perpendicular to this axis, the width of the seal groove at the one of side, electrode frame surface side is less than the width of the seal groove between arriving away from side, electrode frame surface side herein.During wherein Fig. 1 is the concrete manifestation form of this seal groove two kinds: cross sectional shape is (1) swallow-tail form；(2) trapezoidal with chamfering.And on the radial section of sealing joint strip with matching, the width of the seal groove at the one of side, electrode frame surface is less than the width of the linear sealing adhesive tape between arriving away from side, electrode frame surface side herein.The concrete manifestation form of sealing joint strip is the most as shown in fig. 1: shape of cross section is circular or trapezoidal.Before assembling pile, sealing joint strip is pressed in corresponding seal groove, the interference fit embedding sealing groove that the physical dimension difference between dependence is formed, completes sealing and the location of sealing strip simultaneously.
The linear sealing structure of self-locating function that what Fig. 2 showed have, wherein the cross section of seal groove be swallow-tail form, the central angle sector more than 180 degree, trapezoidal in two kinds of combination of the above, or rectangle combines with a kind of in them.Away from the seal groove structure of side, electrode frame surface as locating slot, seal groove structure near side, electrode frame surface is as sealed groove, locating slot and sealed groove coaxial line, locating slot shape of cross section be swallow-tail form, the central angle sector more than 180 degree, trapezoidal in one.As shown in Figure 2, the shape of cross section of locating slot is trapezoidal with chamfering of (1) swallow-tail form and (2)；The shape of cross section of seal groove is rectangle.
Corresponding linear sealing adhesive tape cross sectional shape radially be circular, oval and trapezoidal in two kinds of combination of the above, or rectangle and a kind of combination in them.Being provided with upper and lower double-layer structure accordingly on work seal bar cross section radially, upper strata is the sealing adhesive tape being assemblied in seal groove；Lower floor is the location adhesive tape being assemblied in locating slot, location adhesive tape shape of cross section radially be circular, oval, rectangle and trapezoidal in one.Also shown in FIG. 2, location rubber strip cross section is generally circular in shape and trapezoidal, and the shape of cross section of sealing adhesive tape is rectangle.Sealing adhesive tape and location adhesive tape are integral type structure.During assembling, the lower floor of linear sealing bar being positioned adhesive tape to be pressed in locating slot, sealing adhesive tape automatically falls in seal groove, realizes location respectively and seals.
Two kinds of structures of Fig. 1 and Fig. 2 all can prevent kink and the dislocation of sealing strip.Seal structure and be assembled into one with electrode frame, during pile assembles, therefore simplify installation sealing strip or the program of gasket seal, improve dress heap efficiency.
Fig. 3 and Fig. 4 is that electrode frame is reached the standard grade the layout of seal groove and locating slot, and wherein the side with runner is referred to as the front of electrode frame, and opposite side is referred to as reverse side.The linear sealing groove of front and reverse side is closed-loop structure, wherein for preventing internal hemorrhage due to trauma, arranges closed loop and seal at the liquid in-out mouth not flowing into electrode in this electrode frame, and this closed loop shape can be rectangle or circle but be not limited to the two shape.Electrode frame obverse and reverse will be parallel to, and any point becomes perspective plane to front and the equidistant plane of reverse side on it, the axis of the seal groove of electrode frame front and reverse side projection line mutual dislocation on the projection surface in Fig. 3, dislocation value is 6.5mm, and such dislocation design is applicable to the situation that electrode frame is relatively thin or locating slot is bigger with the seal groove degree of depth；In Fig. 4, the axis of the seal groove of electrode frame front and reverse side and locating slot projection line on the projection surface is completely superposed, and the power that is squeezed is identical, it is adaptable to the situation that electrode frame intensity is high and locating slot is less with the seal groove degree of depth.
Use the assembling form of the sealing strip of display in Fig. 2 (2), the linear sealing of Fig. 3 arrange form assembling pile (5 batteries), pile by collector plate, electrode, be equipped with the electrode frame of linear sealing bar, barrier film, be equipped with the electrode frame of linear sealing bar, electrode, collector plate order be assembled successively.Wherein electrode be carbon felt, ion exchange membrane be Nafion membrane, electrode frame material is PVC, and sealing joint strip is fluorubber or ethylene propylene diene rubber, electrode area 875cm2.Pile experimental data is as shown in table 1:
The pile cell performance of the table 1 close lower assembling of different electricity
In table 1, data show that pile non-internal leakage produces, and 350 circulations of accumulative operation do not find to leak outside, pile favorable sealing property.
Claims (6)
1. a flow battery linear sealing structure with self-locating function, it is characterized in that: on electrode of liquid flow cell frame, be provided with ring-type linear sealing groove, wherein linear sealing groove is two ringed lines with the intersection on electrode frame surface, in electrode frame plane, the center line of two ringed lines is axis, on the cross section of the seal groove being perpendicular to this axis, the width of the seal groove at the one of side, electrode frame surface side is less than the width of the seal groove between arriving away from side, electrode frame surface side herein；The cross section of described seal groove be swallow-tail form, the central angle sector more than 180 degree, trapezoidal in two kinds of combination of the above, or rectangle combines with a kind of in them；Corresponding linear sealing adhesive tape cross sectional shape radially be circular, oval and trapezoidal in two kinds of combination of the above, or rectangle and a kind of combination in them；Away from the seal groove structure of side, electrode frame surface as locating slot, seal groove structure near side, electrode frame surface is as sealed groove, locating slot and sealed groove coaxial line, locating slot shape of cross section be swallow-tail form, central angle more than 180 degree sector, trapezoidal in one, being provided with upper and lower double-layer structure accordingly on work seal bar cross section radially, upper strata is the sealing adhesive tape being assemblied in seal groove；Lower floor is the location adhesive tape being assemblied in locating slot, location adhesive tape shape of cross section radially be circular, oval and trapezoidal in one, during assembling, the lower floor of linear sealing bar being positioned adhesive tape to be pressed in locating slot, sealing adhesive tape and location adhesive tape are integral type structure.
2. according to the flow battery linear sealing structure described in claim 1, it is characterized in that: on the radial section of corresponding ring-type linear sealing adhesive tape, the width of the seal groove at the one of side, electrode frame surface is less than the width of the linear sealing adhesive tape between arriving away from side, electrode frame surface side herein.
3. according to the flow battery linear sealing structure described in claim 1, it is characterised in that: realize sealing in sealing joint strip is pressed into during assembling linear sealing groove.
Flow battery linear sealing structure the most according to claim 1, it is characterised in that: electrode frame is front with the side of runner, and side in contrast is reverse side；Electrode frame front and reverse side are provided with the above-mentioned linear sealing groove with self positioning structure, electrode frame obverse and reverse will be parallel to, and any point becomes perspective plane to front and the equidistant plane of reverse side on it, as described in claim 1 the axis of electrode frame front and the seal groove of reverse side projection line on the projection surface is completely superposed, or mutual dislocation, dislocation value is 0mm-20mm.
Flow battery linear sealing structure the most according to claim 1, it is characterised in that: the liquid in-out mouth in electrode frame is provided with the closing adhesive tape structure of anti-internal hemorrhage due to trauma accordingly, and this structure is annular, or rectangle with holes；Electrode frame with self positioning structure uses engraving or injection molding manner processing；Described electrode frame receptacle material is polyethylene, polypropylene, polrvinyl chloride or ABS.
Flow battery linear sealing structure the most according to claim 1, it is characterised in that: the compression ratio of sealing joint strip is 5%-60%；The material of the sealing joint strip matched with self positioning structure is the acid corrosion-resistant rubber of fluorubber or ethylene propylene diene rubber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210484865.0A CN103840180B (en) | 2012-11-23 | 2012-11-23 | A kind of flow battery linear sealing structure with self-locating function |
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| CN201210484865.0A CN103840180B (en) | 2012-11-23 | 2012-11-23 | A kind of flow battery linear sealing structure with self-locating function |
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| CN103840180A CN103840180A (en) | 2014-06-04 |
| CN103840180B true CN103840180B (en) | 2016-08-03 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6380911B2 (en) * | 2014-11-05 | 2018-08-29 | 住友電気工業株式会社 | Electrolyte circulating battery |
| JP2017157340A (en) * | 2016-02-29 | 2017-09-07 | 住友電気工業株式会社 | Redox flow cell |
| WO2018086482A1 (en) * | 2016-11-09 | 2018-05-17 | 大连融科储能技术发展有限公司 | Electrode structure of flow battery, flow battery stack, and sealing structure for flow battery stack |
| CN106374129B (en) * | 2016-11-09 | 2023-11-28 | 大连融科储能技术发展有限公司 | Flow battery pile sealing structure |
| CN109830706A (en) * | 2017-11-23 | 2019-05-31 | 中国科学院大连化学物理研究所 | A kind of electrode frame structure and the zinc-bromine flow battery with its assembling |
| CN108258262A (en) * | 2018-01-17 | 2018-07-06 | 承德新新钒钛储能科技有限公司 | The sealing structure and pile of a kind of flow battery |
| CN113659168A (en) * | 2021-06-28 | 2021-11-16 | 东风汽车集团股份有限公司 | Proton exchange membrane single cell and fuel cell |
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| CN1881653A (en) * | 2005-06-16 | 2006-12-20 | 鸿富锦精密工业（深圳）有限公司 | Seal structure of fuel cell |
| CN101847724A (en) * | 2010-03-31 | 2010-09-29 | 清华大学 | Bipolar plate frame and galvanic pile of flow battery |
| WO2012042288A1 (en) * | 2010-10-01 | 2012-04-05 | Krisada Kampanatsanyakorn | Frameless electrochemical cell stack having self centering rigid plastic bushings in aligned through holes of interconnects and membrane assemblies |
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Patent Citations (3)
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| CN1881653A (en) * | 2005-06-16 | 2006-12-20 | 鸿富锦精密工业（深圳）有限公司 | Seal structure of fuel cell |
| CN101847724A (en) * | 2010-03-31 | 2010-09-29 | 清华大学 | Bipolar plate frame and galvanic pile of flow battery |
| WO2012042288A1 (en) * | 2010-10-01 | 2012-04-05 | Krisada Kampanatsanyakorn | Frameless electrochemical cell stack having self centering rigid plastic bushings in aligned through holes of interconnects and membrane assemblies |
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