CN103840180A - Flow cell wire sealing structure with self-locating function - Google Patents
Flow cell wire sealing structure with self-locating function Download PDFInfo
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- CN103840180A CN103840180A CN201210484865.0A CN201210484865A CN103840180A CN 103840180 A CN103840180 A CN 103840180A CN 201210484865 A CN201210484865 A CN 201210484865A CN 103840180 A CN103840180 A CN 103840180A
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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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- 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
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Abstract
The invention relates to a flow cell wire sealing structure with a self-locating function. A flow cell electrode frame is provided with an annular wire sealing slot, wherein the intersection lines of the wire sealing slot and the surface of the electrode frame are two annular wires, the center line of the two annular wires on the plane of the electrode frame is an axis and is vertical to the cross section of the sealing slot of the axis, and the width of the sealing slot close to one side edge of the surface of the electrode frame is smaller than the width of the sealing slot far away one side edge of the surface of the electrode frame. According to the flow cell wire sealing structure with the self-locating function, the sealing is reliable, a wire sealing rubber strip is convenient to install, the twisting and the misplacing of the wire sealing rubber strip are prevented, the number of galvanic pile assembly parts is reduced, and the pilling efficiency is improved; meanwhile, in the processes of detaching and reassembling galvanic piles, the sealing strip can be stably located in the sealing slot, so that the multiple assembly efficiency is improved.
Description
Technical field
The present invention relates to the electric pile structure of flow battery, particularly the hermetically-sealed construction of pile.
Background technology
The energy is the mainstay that promotes modern social development all the time, along with the raising of civilization degree, the demand of the energy is also increased day by day.Fossil energy is faced with exhausted danger as a kind of non-renewable energy resources, and regenerative resource in recent years comprises that solar energy, wind energy, tidal energy etc. have obtained swift and violent development, has gradually the trend that replaces traditional energy.But regenerative resource unstable, discontinuous feature has determined the work that it can be normal, effective, safe in the grid-connected middle adjusting that needs pilot process of electric power, the key technology that energy storage addresses this problem just also obtains the attention of various countries gradually.Redox flow batteries is that a kind of utilization has the electrochemical energy storage device that the oxidation-reduction reaction of different valence state element carries out storage and the conversion of energy, discontinuous, unsettled input can be converted into continuously, stablize, safe output, reduce the impact to intelligent grid, overcome the applied defect of regenerative resource.
Flow battery adopts the form of filter press to assemble conventionally, that is: form monocell by the hermetically-sealed construction 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 is composed in series to pile by collector plate, the both sides of pile are furnished with end plate, on it, be processed with corresponding screwed hole, by the spring on compression screw rod, pile is compressed, to meet the compression of electrode and the requirement of sealing force.For flow cell pile, sealing is to affect Performance data, determines the key factor in pile life-span.The seal means of low cost, high reliability was in these years all carried out trial on flow cell pile, and from the face sealing of elastomeric material and linear sealing to laser welding, object is all to improve sealing reliability, reduces the difficulty of pile assembling, the prolongation pile life-span.It is less that linear sealing phase specific surface is sealed under the condition that sealing effectiveness is suitable compression area, can effectively reduce number of springs or reduce spring rate, compares laser welding cost lower simultaneously, can repeatedly dismantle use, and flexibility is better.But be limited by the orientation problem of sealing strip in seal groove, in assembling process, easily cause kink and the dislocation of adhesive tape, cause seal failure.Adopt binding agent that sealing strip is bonded in seal groove and can contributes to a certain extent location, increasable operation can improve again machinery or cost of labor.Therefore, design has the most effective and the simplest and the most direct method that the linear sealing structure of self-locating function is solution 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 achieving the above object, the technical solution used in the present invention is:
A kind of flow battery linear sealing structure with self-locating function, wherein: the linear sealing groove that is provided with ring-type on electrode of liquid flow cell frame, wherein the intersection on linear sealing groove and electrode frame surface is two ringed lines, in electrode frame plane, the center line of two ringed lines is axis, on cross section perpendicular to the seal groove of this axis, be less than near the width of the seal groove at a place of electrode frame surface one side side the width arrive away from the seal groove at the place between the surperficial side side of electrode frame herein;
The above-mentioned flow battery linear sealing structure with self-locating function, wherein: on the radial section of the linear sealing adhesive tape of corresponding ring-type, the width of the seal groove at a place of close electrode frame surface one side is less than the width arriving away from the linear sealing adhesive tape at the place between the one side side of electrode frame surface herein;
The above-mentioned flow battery linear sealing structure with self-locating function, wherein: when assembling, adhesive tape is pressed in seal groove and realizes and sealing;
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 greater than the fan-shaped and trapezoidal of 180 degree; Corresponding linear sealing adhesive tape cross sectional shape is radially circular, oval and trapezoidal;
Seal groove and sealing joint strip in the above-mentioned flow battery linear sealing structure with self-locating function, wherein: the cross section of described seal groove is that swallow-tail form, central angle are greater than the more than two kinds combination in 180 degree fan-shaped, trapezoidal, or rectangle combines with the one in them; Corresponding linear sealing adhesive tape cross sectional shape is radially the more than two kinds combination in circular, oval and trapezoidal, or rectangle combines with the one in them;
Away from the seal groove structure of electrode frame surface one side as location notch, the seal groove structure of close electrode frame surface one side is as sealed groove, location notch and sealed groove coaxial line, location notch shape of cross section is that swallow-tail form, central angle are greater than the one in 180 degree fan-shaped, trapezoidal, on work seal bar cross section radially, be provided with accordingly upper and lower double-layer structure, upper strata is the sealing adhesive tape being assemblied in seal groove; Lower floor is the location adhesive tape being assemblied in location notch, location is the one in circular, oval and trapezoidal with adhesive tape shape of cross section radially, when assembling, lower floor's location adhesive tape of linear sealing bar is pressed in location notch, sealing is integral type structure by adhesive tape and location adhesive tape;
Above-mentioned two kinds of flow battery linear sealing structures with self-locating function, wherein: electrode frame is positive with a side of runner, and a side is in contrast reverse side; Electrode frame is positive is provided with the above-mentioned linear sealing groove with self positioning structure with reverse side.To be parallel to electrode frame obverse and reverse, and on it, any point becomes perspective plane to positive with the equidistant plane of reverse side, the projection line of the axis of the positive seal groove with reverse side of electrode frame on perspective plane overlaps completely as described in claim 1, or mutual dislocation, dislocation value is 0mm-20mm;
Above-mentioned two kinds of flow battery linear sealing structures with self-locating function, wherein: the liquid in-out mouth in electrode frame is provided with the anti-interior sealing adhesive tape structure leaking accordingly, this structure can be annular, can be also rectangle with holes, or even any enclosed shape with holes.
Above-mentioned two kinds of flow battery linear sealing structures with self-locating function, wherein: adopt engraving or injection moulding mode to process with the electrode frame of self positioning structure;
Above-mentioned two kinds of flow battery linear sealing structures with self-locating function, wherein: electrode frame receptacle material is polyethylene, polypropylene, polyvinyl chloride, ABS or glass fiber enhanced polypropylene.
Above-mentioned two kinds of flow battery linear sealing structures with self-locating function, wherein: the compression ratio of sealing joint strip is 5%-60%;
Above-mentioned two kinds of flow battery linear sealing structures with self-locating function, wherein: the material of the sealing joint strip matching with self positioning structure is the acid corrosion-resistant rubber such as fluorubber or ethylene propylene diene rubber;
Tool of the present invention has the following advantages:
1. the present invention by arranging the seal groove with self-locating function in electrode frame, complete location by having in the sealing joint strip indentation sealing groove of corresponding construction and location notch, conveniently, simply solve the orientation problem of linear sealing, also prevent electrode frame the coming off of sealing strip in the process of mobile or upset simultaneously, solved the fixation problem of adhesive tape.
2. the linear sealing structure with self-locating function of the present invention's design, can prevent kink and the dislocation of sealing joint strip in location notch, avoid in face sealing sealed film displacement or adhesive sealing bar is insecure, the problem of dislocation occurs, and the electrode frame that is designed with self-locating function seal groove also can repeatedly be assembled and be guaranteed that sealing strip does not come off, reliability is high, has reduced repeatedly and has spent in the time in sealing in assembling.
The linear sealing structure decrease with self-locating function of the present invention design sealing load, reduced spring height and number of springs, simplified linkage editor, improved efficiency of assembling.
Accompanying drawing explanation
Fig. 1 the first has 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) location notch cross section is swallow-tail form, and seal groove cross section is rectangle, and corresponding sealing is rectangle with adhesive tape cross section, and location is circular with adhesive tape cross section; (2) location notch cross section is trapezoidal with chamfering, and seal groove cross section is rectangle, and corresponding sealing is rectangle with adhesive tape cross section, and locating is trapezoidal with adhesive tape cross section;
The seal groove of Fig. 3 electrode frame both sides and the linear sealing structure of location notch axial offset arrange schematic diagram: the linear sealing trench pattern figure of (1) electrode frame; (2) A-A sectional drawing;
The seal groove linear sealing structure identical with location notch axis of Fig. 4 electrode frame both sides arranges schematic diagram: the linear sealing trench pattern figure of (1) electrode frame; (2) A-A sectional drawing.
Embodiment
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.On electrode of liquid flow cell frame, be provided with the linear sealing groove of ring-type, wherein the intersection on linear sealing groove and electrode frame surface is two ringed lines, in electrode frame plane, the center line of two ringed lines is axis, on cross section perpendicular to the seal groove of this axis, be less than near the width of the seal groove at a place of electrode frame surface one side side the width arrive away from the seal groove at the place between the surperficial side side of electrode frame herein.Wherein Fig. 1 is two kinds in the concrete manifestation form of sealing groove: 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 a place of close electrode frame surface one side is less than the width arriving away from the linear sealing adhesive tape at the place between the one side side of electrode frame surface herein.The concrete manifestation form of sealing joint strip is also 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 to the interference fit embedding sealing groove of the poor formation of physical dimension between dependence, the sealing and the location that complete sealing strip simultaneously.
The linear sealing structure with self-locating function that Fig. 2 shows, wherein the cross section of seal groove is that swallow-tail form, central angle are greater than the more than two kinds combination in 180 degree fan-shaped, trapezoidal, or rectangle combines with the one in them.Away from the seal groove structure of electrode frame surface one side as location notch, the seal groove structure of close electrode frame surface one side is as sealed groove, location notch and sealed groove coaxial line, location notch shape of cross section is that swallow-tail form, central angle are greater than the one in 180 degree fan-shaped, trapezoidal.What as shown in Figure 2, the shape of cross section of location notch was (1) swallow-tail form and (2) with chamfering is trapezoidal; The shape of cross section of seal groove is rectangle.
Corresponding linear sealing adhesive tape cross sectional shape is radially the more than two kinds combination in circular, oval and trapezoidal, or rectangle combines with the one in them.On work seal bar cross section radially, be provided with accordingly upper and lower double-layer structure, upper strata is the sealing adhesive tape being assemblied in seal groove; Lower floor is the location adhesive tape being assemblied in location notch, location with adhesive tape shape of cross section be radially circular, oval, rectangle and trapezoidal in one.Equally as shown in Figure 2, location is shaped as circular and trapezoidal with rubber strip cross section, and sealing is rectangle with the shape of cross section of adhesive tape.Sealing is integral type structure by adhesive tape and location adhesive tape.When assembling, lower floor's location adhesive tape of linear sealing bar is pressed in location notch, sealing falls in seal groove automatically by adhesive tape, realizes respectively location and sealing.
Two kinds of structures of Fig. 1 and Fig. 2 all can prevent kink and the dislocation of sealing strip.Hermetically-sealed construction and electrode frame are assembled into one, therefore in the process of pile assembling, have simplified the program that sealing strip or gasket seal are installed, and have improved dress heap efficiency.
Fig. 3 and Fig. 4 are the reach the standard grade layout of seal groove and location notch of electrode frame, are wherein called the front of electrode frame with a side of runner, and opposite side is called reverse side.Positive be closed-loop structure with the linear sealing groove of reverse side, wherein for preventing interior leakage, closed loop sealing be set at the liquid in-out mouth place that does not flow into electrode in this electrode frame, this closed loop shape can be rectangle or circle but be not limited to this two shapes.To be parallel to electrode frame obverse and reverse, and on it, any point becomes perspective plane to positive with the equidistant plane of reverse side, the projection line mutual dislocation of the axis of the seal groove of electrode frame front and reverse side on perspective plane in Fig. 3, dislocation value is 6.5mm, and such dislocation design is applicable to the thinner or location notch of electrode frame and the larger situation of the seal groove degree of depth; In Fig. 4, positive projection line on perspective plane overlaps electrode frame completely with the seal groove of reverse side and the axis of location notch, and the power that is squeezed is identical, is applicable to the situation that electrode frame intensity height and location notch and the seal groove degree of depth are less.
Adopt the assembling form of the sealing strip showing in Fig. 2 (2), the linear sealing of Fig. 3 arranges form assembling pile (5 batteries), and pile is assembled successively by collector plate, electrode, the electrode frame that is equipped with linear sealing bar, barrier film, the electrode frame that is equipped with linear sealing bar, electrode, collector plate order.Wherein electrode is that carbon felt, amberplex are Nafion film, and electrode frame material is PVC, and sealing joint strip is fluorubber or ethylene propylene diene rubber, electrode area 875cm
2.Pile experimental data is as shown in table 1:
The pile cell performance of the close lower assembling of the different electricity of table 1
In table 1, data show that pile non-internal leakage produces, and totally move 350 circulations and do not find to leak outside, pile favorable sealing property.
Claims (8)
1. one kind has the flow battery linear sealing structure of self-locating function, it is characterized in that: the linear sealing groove that is provided with ring-type on electrode of liquid flow cell frame, wherein the intersection on linear sealing groove and electrode frame surface is two ringed lines, in electrode frame plane, the center line of two ringed lines is axis, on cross section perpendicular to the seal groove of this axis, be less than near the width of the seal groove at a place of electrode frame surface one side side the width arrive away from the seal groove at the place between the surperficial side side of electrode frame herein.
2. according to flow battery linear sealing structure claimed in claim 1, it is characterized in that: on the radial section of the linear sealing adhesive tape of corresponding ring-type, the width of the seal groove at a place of close electrode frame surface one side is less than the width arriving away from the linear sealing adhesive tape at the place between the one side side of electrode frame surface herein.
3. according to the flow battery linear sealing structure described in claim 1 or 2, it is characterized in that: when assembling, sealing joint strip is pressed in linear sealing groove and realizes and sealing.
4. according to the flow battery linear sealing structure described in claim 1 or 2, it is characterized in that: the shape of cross section of described seal groove is that swallow-tail form, central angle are greater than the fan-shaped, trapezoidal of 180 degree; Corresponding linear sealing adhesive tape cross sectional shape is radially circular, oval and trapezoidal.
5. according to the flow battery linear sealing structure described in claim 1 or 2, it is characterized in that:
The cross section of described seal groove is that swallow-tail form, central angle are greater than the more than two kinds combination in 180 degree fan-shaped, trapezoidal, or rectangle combines with the one in them;
Corresponding linear sealing adhesive tape cross sectional shape is radially the more than two kinds combination in circular, oval and trapezoidal, or rectangle combines with the one in them;
Away from the seal groove structure of electrode frame surface one side as location notch, the seal groove structure of close electrode frame surface one side is as sealed groove, location notch and sealed groove coaxial line, location notch shape of cross section is that swallow-tail form, central angle are greater than the one in 180 degree fan-shaped, trapezoidal, on work seal bar cross section radially, be provided with accordingly upper and lower double-layer structure, upper strata is the sealing adhesive tape being assemblied in seal groove; Lower floor is the location adhesive tape being assemblied in location notch, location is the one in circular, oval and trapezoidal with adhesive tape shape of cross section radially, when assembling, lower floor's location adhesive tape of linear sealing bar is pressed in location notch, sealing is integral type structure by adhesive tape and location adhesive tape.
6. flow battery linear sealing structure according to claim 1 and 2, is characterized in that: electrode frame is front with a side of runner, and a side is in contrast reverse side; Electrode frame is positive is provided with the above-mentioned linear sealing groove with self positioning structure with reverse side.To be parallel to electrode frame obverse and reverse, and on it, any point becomes perspective plane to positive with the equidistant plane of reverse side, the projection line of the axis of the positive seal groove with reverse side of electrode frame on perspective plane overlaps completely as described in claim 1, or mutual dislocation, dislocation value is 0mm-20mm.
7. flow battery linear sealing structure according to claim 1 and 2, is characterized in that:
Liquid in-out mouth in electrode frame is provided with the anti-interior sealing adhesive tape structure leaking accordingly, and this structure is annular, or rectangle with holes, or even any enclosed shape with holes;
Adopt engraving or injection moulding mode to process with the electrode frame of self positioning structure; Described electrode frame receptacle material is polyethylene, polypropylene, polyvinyl chloride, ABS or glass fiber enhanced polypropylene.
8. flow battery linear sealing structure according to claim 1 and 2, is characterized in that: the compression ratio of sealing joint strip is 5%-60%; The material of the sealing joint strip matching with self positioning structure is the acid corrosion-resistant rubber such as fluorubber or ethylene propylene diene rubber.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106374129A (en) * | 2016-11-09 | 2017-02-01 | 大连融科储能技术发展有限公司 | Flow-cell electric-pile sealing structure |
| EP3217459A4 (en) * | 2014-11-05 | 2017-09-13 | Sumitomo Electric Industries, Ltd. | Electrolyte-circulation battery |
| 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 |
| 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 |
| EP3425714A4 (en) * | 2016-02-29 | 2019-05-01 | Sumitomo Electric Industries, Ltd. | Redox flow battery |
| 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 |
| 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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| EP3217459A4 (en) * | 2014-11-05 | 2017-09-13 | Sumitomo Electric Industries, Ltd. | Electrolyte-circulation battery |
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| 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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| CN103840180B (en) | 2016-08-03 |
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