CN101847724B - Bipolar plate frame and galvanic pile of flow battery - Google Patents
Bipolar plate frame and galvanic pile of flow battery Download PDFInfo
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- CN101847724B CN101847724B CN2010101386824A CN201010138682A CN101847724B CN 101847724 B CN101847724 B CN 101847724B CN 2010101386824 A CN2010101386824 A CN 2010101386824A CN 201010138682 A CN201010138682 A CN 201010138682A CN 101847724 B CN101847724 B CN 101847724B
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Abstract
The invention relates to a bipolar plate frame and a galvanic pile of a flow battery, which belong to the field of flow batteries. The bipolar plate frame is characterized in that: labyrinth packing is formed by pressing two layers of O-shaped gasket rings which are arranged from inside to outside between an ion exchange membrane and the plate frame; an electrolyte channel and the O-shaped gasket rings are arranged on the region outside the two layers of the O-shaped gasket rings which are arranged from inside to outside; and an electrolyte groove is formed at the other side of an electrode frame opposite to the ion exchange membrane, and closely contacts the bipolar plate to form an electrolyte inlet channel or an electrolyte outlet channel. The bipolar plate frame and the galvanic pile of the flow battery have simple structures and completely solve the problem of cross leakage caused by loose sealing between anolyte and catholyte.
Description
Technical field
The present invention relates to electric energy conversion and technical field of memory, especially make the technical method of flow battery.
Background technology
Utilizing the renewable energy power generations such as wind energy, solar energy is one of human future important channel of obtaining energy from nature.Because wind energy, solar power generation process have randomness, discontinuous characteristics, the electric energy that is difficult to keep stable is exported, and the apparatus for storing electrical energy of needs and certain scale matches, and the electric power system of complete guarantees continual and steady electric power supply.Therefore, the key that the exploitation electric energy conversion efficiency is high, storage volume energy-storage system large, that economic performance is good becomes the development renewable and clean energy resource.In various forms of energy storage devices, such as retaining energy-accumulating power station, high speed flywheel mechanical energy storage, cold and hot temperature difference energy storage etc., the characteristics such as electrochemical energy storage has the energy conversion efficiency height, and mobility is strong cause that the various countries researcher greatly pays close attention to.Flow battery system has large capacity electrical power storage and Efficient Conversion function, and the characteristics of long service life, environmental protection, safety, is easy to be complementary with wind energy, solar power generation, and the decrease equipment manufacturing cost is for renewable energy utilization provides technique guarantee.Be used for the network system energy storage, can avoid the Construction of Pumped Storage Power Station cycle long, the shortcoming of addressing geographical conditions harshness, the uninterrupted power supply that is suitable for medium-scale industrial enterprise, hotel, government department uses, can effectively improve grid supply quality, finish " peak load shifting " effect of electrical network.
All-vanadium flow battery (Vanadium Redox Battery, VRB) be a kind of mechanism of new electrochemical power sources, vanadium ion by different valence state transforms storage and the release that realizes electric energy mutually, use element of the same race to form battery system, avoided variety classes active material between positive and negative half-cell to interpenetrate the cross pollution of generation from principle.(Fig. 1) use and to be dissolved in that the different valence state vanadium ion is as anode and negative electrode active material in the electrolyte, anode electrolyte and negative pole electrolyte separately store, and avoid battery storage process self-discharge phenomenon from principle, are suitable for extensive thermal energy storage process and use.When the power of wind energy, device of solar generating surpasses rated output power, by the charging to flow battery, be that chemical energy is stored in the ion pair of different valence state with electric energy conversion; When Blast Furnace Top Gas Recovery Turbine Unit (TRT) can not satisfy rated output power, flow battery began discharge, and the chemical energy that stores is converted into electric energy, guaranteed the stable electrical power stage.Because flow battery obtains common concern for the significance of the renewable energy power generation processes such as wind energy, solar energy at home and abroad as key technology.
Following redox reaction will occur on the electrode in all-vanadium flow battery charge/discharge running.
Because anode electrolyte and negative pole electrolyte are in respectively oxidizability valence state and reproducibility valence state, it no matter is the charge/discharge running in pile inside, or electrolyte course of conveying, need to keep anode electrolyte and negative pole electrolyte not to mix, otherwise between the vanadium ion of different valence state each other exchang electron produce self-discharge phenomenon, have a strong impact on battery efficiency.Normal conditions, two kinds of electrolyte transfer pipelines, force (forcing) pump, and reservoir vessel realizes independently of one another easily, do not produce anode electrolyte and negative pole electrolyte mixed problem.Yet electrolyte exists two kinds of chances to cause that positive pole, negative pole electrolyte mix and self-discharge phenomenon in pile internal flow process.1) pass the mixing of amberplex: when amberplex was not good enough for the vanadium ion barrier properties, the cell charging/discharging running was followed the hydrogen ion migration, the infiltration of vanadium ion generation cross-film; Can improve vanadium ion/hydrogen ion selective by selecting suitable membrane material, solve vanadium ion cross-film infiltration problem.2) pass the mixing of pile hermetically-sealed construction: two kinds of electrolyte need to pass same interface simultaneously, and are assigned to electrode surface and carry out electrochemical reaction.Pile sealing will guarantee that electrolyte can not leak into the pile outside, guarantees that again pile inside do not wear liquid to each other, realizes on same plane that particularly amberplex and two kinds of electrolyte seal simultaneously, and is often very difficult.Existing flow battery technology (China Patent Publication No.: 1531761A, 1515046A) adopts O type sealing ring simultaneously crimping barrier film and hermetic electrolyte liquid mode, carries out the pile sealing, obtains certain effect.Yet, this electric pile structure sealing means depends critically upon battery sheet frame machining accuracy and seal member material properties, in long-term use procedure, often because of factors such as variations in temperature, amberplex change in size, cause that two kinds of electrolyte leak from the sealing position, produce mixed self discharge problem.
For the inner two kinds of electrolyte of the pile that solves existing flow battery leak from the sealing position and intersection self discharge problem, avoid the electrolyte cross pollution, improve coulombic efficiency.The present invention proposes a kind of new structure of bipolar plate of redox flow battery electrode frame, can avoid two kinds of electrolyte to interpenetrate fully on principle.The two-layer O RunddichtringO of arranging inside and outside the employing is pressed in respectively between amberplex and the sheet frame, forms labyrinth sealing; , arrange electrolyte passage and place the O RunddichtringO with exterior domain at inside and outside two-layer O RunddichtringO of arranging.(Fig. 2, Fig. 3) arranging groove with respect to the electrode frame opposite side of amberplex contact, and this groove and bipolar plates each other close contact form electrolyte inflow or flow pass.Because the two-layer O RunddichtringO of arranging inside and outside the public runner of electrolyte is arranged on is with exterior domain, even the electrolyte of seepage only is scattering into the pile outside from the public runner of electrolyte, the labyrinth sealing part that the two-layer O RunddichtringO of arranging inside and outside having no chance to pass forms is thoroughly stopped the mixing that the pile hermetically-sealed construction is passed in pile inside.The bipolar plate frame that the present invention proposes and electric pile structure assembling are simple, realize easily the excellent sealing of two kinds of electrolyte, provide basic guarantee for improving battery coulombic efficiency and energy efficiency.
Summary of the invention
The object of the invention is to provide a kind of bipolar plate frame and electric pile structure of flow battery, solution anolyte and catholyte be the leakage problem because of poorly sealed generation in pile inside, cause self-discharge phenomenon after avoiding two kinds of electrolyte to mix, improve the energy efficiency of battery coulombic efficiency and energy-storage system.Technology contents of the present invention is as follows.
1. the bipolar plate frame of a flow battery is characterized in that, contains: top electrode frame (11), bottom electrode frame (12) and bipolar plates (2), wherein:
Bipolar plates (2), be sandwiched between described top electrode frame (11) and the bottom electrode frame (12), the area of described bipolar plates is equal to or greater than top electrode frame (11), or the area of bottom electrode frame (12), respectively have the first electrolyte stream via hole 211 in both sides, described bipolar plates axis, the 211 ' and second electrolyte stream via hole 212,212 '
The area of described top electrode frame (11) and bottom electrode frame (12) is equal, wherein:
Top electrode frame (11), have anolyte ostium (111) and anolyte tap hole (112) in the both sides, axis, wherein, described anolyte ostium (111) is coaxial relative with the first electrolyte stream via hole 211 on the described bipolar plates (2), described anolyte tap hole (112) is coaxial relative with described bipolar plates the first electrolyte stream via hole 211 ', have the anode electrolysis liquid bath (113) that communicates with described anolyte ostium (111) at the described top electrode frame (11) near described bipolar plates (2) one sides, have along described anode electrolysis liquid bath (113) the equally distributed anolyte distributing slot of length direction (114) in described bipolar plates (2) one sides that link to each other with this anode electrolysis liquid bath (113), flow through hole A (117) at catholyte, and catholyte flows through hole B (118) periphery and is provided with O-ring seals (7) groove (116) that hermetic electrolyte liquid is used
Bottom electrode frame (12), have catholyte ostium (121) and catholyte tap hole (122) in the both sides, axis, wherein, described catholyte ostium (121) is coaxial relative with the second electrolyte stream via hole 212 on the described bipolar plates (2), described catholyte tap hole (122) is coaxial relative with the second electrolyte stream via hole 212 ' on the described bipolar plates (2), have the catholyte tanks (123) that communicates with described catholyte ostium (121) at described bottom electrode frame (12) near described bipolar plates (2) one sides, have equally distributed catholyte distributing slot (124) in described catholyte tanks (123) along the slot length direction, flow through hole A (127) at anolyte, and anolyte flows through hole B (128) periphery and is provided with O-ring seals (7) groove (126) that hermetic electrolyte liquid is used
Not with described top electrode frame (11) that described bipolar plates (2) directly contacts on, have the first seal groove (115) in the inboard of described anode electrolysis liquid bath (113), be used for settling an O RunddichtringO (115A), described O RunddichtringO (115A) position is between described anolyte ostium (111) and anolyte tap hole (112)
Not with described bottom electrode frame (12) that described bipolar plates (2) directly contacts on, have the second seal groove (125) in the inboard of described catholyte tanks (123), be used for settling the 2nd O RunddichtringO (125A), described the 2nd O RunddichtringO (125A) position is between described catholyte ostium (121) and catholyte tap hole (122)
The outside of described the second seal groove of the inner distance of described the first seal groove (115) (125) is at least 2 millimeters.
2. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: described the first seal groove (115) is positioned at described anolyte ostium (111), anolyte tap hole (112), and the inboard of anode electrolysis liquid bath (113); Described the second seal groove (125) is positioned at described catholyte ostium (121), catholyte tap hole (122), and the inboard of catholyte tanks (123).
3. the bipolar plate frame of a kind of flow battery according to claim 1 is characterized in that: between described bipolar plates (2) and described top electrode frame (11), the bottom electrode frame (12) by bonding or elastic sealing gasket or heat merges welding or the laser welding mode connects.
4. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: the material of described bipolar plates (2) possesses the On current ability, uses graphite cake or conductive plastic plate or metallic plate to make.
5. the bipolar plate frame of a kind of flow battery according to claim 1 is characterized in that: top electrode frame (11), bottom electrode frame (12) are by a kind of or two or more mixtures of following macromolecule engineering plastics: polyvinyl chloride, polyethylene, polypropylene, Merlon, Kynoar are made.
6. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: top electrode frame (11), bottom electrode frame (12) use engineering plastics of the same race, adopt plastic injection technological forming or plastic mould pressing technological forming.
7. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: the shape of described the first seal groove (115) and the second seal groove (125) is rectangle.
8. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: when using described bipolar plate frame to form battery pile, described battery pile is in series by two above bipolar plate frames, in described top electrode frame (11), bottom electrode frame (12), fill electrode (6), between the described O RunddichtringO (115A) on the adjacent bipolar plate frame and the 2nd O RunddichtringO (125A), place amberplex (8); Described battery pile upper/lower terminal sets gradually respectively and the upper and lower charging unipolar plate (9) of aliging of described bipolar plate frame and pressure strip (1), uses screw (3) that pile is compressed until electrolyte does not leak.
9. the bipolar plate frame of a kind of flow battery according to claim 8, it is characterized in that: the area of described amberplex (8) does not hinder anolyte, catholyte to flow through top electrode frame (11) and bottom electrode frame (12) greater than the area that described the first seal groove (115) surrounds.
Bipolar plate of redox flow battery frame and electric pile structure that the present invention proposes possess symmetrical characteristics, and good assembling performance.Because the public runner of electrolyte is positioned at the inside and outside two-layer O RunddichtringO outside, the passage that is used for the electrolyte distribution that electrolyte surrounds jointly by the groove on the electrode frame and bipolar plates, flow to the electrode surface that is positioned at the sheet frame middle body, just in case electrolyte is from public runner during seepage, electrolyte only is scattering into the pile outside, the two-layer O RunddichtringO of arranging inside and outside can't passing enters described middle body, thoroughly stops the mixing of the electrolyte cross pile hermetically-sealed construction of pile inside from the design of Sealing Structure angle.The present invention takes into account the symmetrical structure design of bipolar plate of redox flow battery frame simultaneously, greatly improves the operating efficiency of pile assembling.The even distribution of electrolyte on electrode significantly improves electric energy and chemical transformation of energy and efficiency of storage in the all-vanadium flow battery, simplifies battery structure and reduces cost, for further industrial production lays the foundation.
Description of drawings
Fig. 1. the flow battery principle schematic;
Fig. 2. the bipolar plate frame parts,
Fig. 2-1 top electrode frame (11):
111---the anolyte ostium,
112---the anolyte tap hole,
113---the anode electrolysis liquid bath,
114---the anolyte distributing slot,
115---the first seal groove,
116---the O-ring seals groove,
117---catholyte flows through hole A,
118---catholyte flows through hole B;
Fig. 2-2 bottom electrode frame (12):
121---the catholyte ostium,
122---the catholyte tap hole,
123---catholyte tanks,
124---the catholyte distributing slot,
125---the second seal groove,
126---the O-ring seals groove,
127---anolyte flows through hole A,
128---anolyte flows through hole B;
Fig. 3. the bipolar plate frame package assembly,
11---the top electrode frame,
2---bipolar plates,
12---the bottom electrode frame,
211---anolyte flows through hole C,
211 '---anolyte flows through hole D,
212---catholyte flows through hole C,
212 '---catholyte flows through hole D,
111---the anolyte ostium,
112---the anolyte tap hole,
113---the anode electrolysis liquid bath,
114---the anolyte distributing slot,
116---the O-ring seals groove,
117---catholyte flows through hole A,
121---the catholyte ostium,
122---the catholyte tap hole,
123---catholyte tanks,
124---the catholyte distributing slot,
126---the O-ring seals groove,
127---anolyte flows through hole A,
Among Fig. 3, the equal alternative of numeral in the bracket;
Fig. 4. the electric pile structure schematic diagram of flow battery,
1---pressure strip,
2---bipolar plates,
3---screw,
4---nut,
5---holddown spring,
6---electrode,
7---O RunddichtringO C,
8---amberplex,
9---the charging unipolar plate,
115---the first seal groove,
115A---an O RunddichtringO,
125---the second seal groove,
125A---the 2nd O RunddichtringO.
Embodiment
Following bipolar plate of redox flow battery mount structure of the present invention, details are as follows for electric pile structure:
The bipolar plates sheet frame of this all-vanadium flow battery is comprised of three parts, is respectively top electrode frame (11), bipolar plates (2), bottom electrode frame (12); With three's consistency from top to bottom, guarantee that electrolyte flows through corresponding duct during assembling, use binding agent to connect top electrode frame (11), bipolar plates (2), bottom electrode frame (12) as a whole.
Some groups of monocells of the pile of this all-vanadium flow battery are composed in series, and each monocell is comprised of anodal half-cell and negative pole half-cell.Following electrochemical reaction occurs at cell charging/discharging process electrode in the porous electrode (6) of packing in top electrode frame (11), bottom electrode frame (12).
Anodal reaction
Negative reaction
The pile of all-vanadium flow battery is by aliging successively up and down with lower member, use lock-screw with the fastening rear composition of pressure strip (1), described parts comprise: pressure strip (1), charging unipolar plate (9), top electrode frame (11), bipolar plates (2), bottom electrode frame (12), O RunddichtringO C (7), an O RunddichtringO (115A), the 2nd O RunddichtringO (125A), amberplex (8) consist of.O RunddichtringO C (7) is positioned between top electrode frame (11) and the bottom electrode frame (12), after compressing and the electrolyte of top electrode frame (11), bottom electrode frame (12) flows into, the tap hole alignment, the runner that formation electrolyte flows through.
Embodiment 1
Bipolar plate of redox flow battery frame of the present invention and electric pile structure further specify as follows.
Top electrode frame (11): material is polyvinyl chloride, 200 millimeters of length, 200 millimeters of width, 5 millimeters of thickness, and sealed groove is wide 3 millimeters, and 1.6 millimeters of the degree of depth are used 146 millimeters of O RunddichtringO (115A) diameters, 2.65 millimeters of wire diameters.
Bipolar plates (2): liquid-tight graphite, 200 millimeters of length, 200 millimeters of width, 4 millimeters of thickness
Bottom electrode frame (12): material is polyvinyl chloride, 200 millimeters of length, 200 millimeters of width, 5 millimeters of thickness, and sealed groove is wide 3 millimeters, and 1.6 millimeters of the degree of depth are used 132 millimeters of the 2nd O RunddichtringO (125A) diameters, 2.65 millimeters of wire diameters.
Use the igelite adhesive to carry out top electrode frame, bottom electrode frame and liquid-tight graphite bonding.The bipolar plate frame that is bonded as one is used as parts.
O RunddichtringO C (7): use the neoprene O type circle of 16 millimeters of wire diameters 2.65, diameter to seal.Amberplex (8): use commercially available homogeneous phase cation exchange film, ion exchange capacity 2mmol/g dry film, 0.3 millimeter of thickness, membrane surface resistance are lower than 4.5 Ω .cm
2
Electrode (6): use commercially available carbon felt, 95 millimeters of length, 90 millimeters of width, 5 millimeters of thickness
Pressure strip (1): use 314 stainless steel materials to make, 200 millimeters of length, 200 millimeters of width, 10 millimeters of thickness.
According to shown in Figure 4, with above-mentioned battery component align successively assemble after, use the stainless steel trip bolt locking of 10 millimeters of diameters, finish the flow cell pile assembling.
Bipolar plate of redox flow battery mount structure of the present invention further specifies as follows.
Top electrode frame (11): material is Kynoar, 850 millimeters of length, 450 millimeters of width, 4 millimeters of thickness, and the first seal groove (115) is wide 3 millimeters, 1.6 millimeters of the degree of depth.
Bipolar plates (2): the bipolar plates of conductive plastics preparation, 850 millimeters of length, 450 millimeters of width, 2 millimeters of thickness, conductance is greater than 45S/cm.
The bottom electrode frame: material is Kynoar, 850 millimeters of length, 450 millimeters of width, 4 millimeters of thickness, and the second seal groove (125) is wide 3 millimeters, 1.6 millimeters of the degree of depth.
The bipolar plates (2) of top electrode frame (11), bottom electrode frame (12) and conductive plastics preparation is welded, use as parts in connection with the bipolar plate frame that is integrated.
O RunddichtringO C (7): use the neoprene O type circle of 18 millimeters of wire diameters 2.65, diameter to seal.Sealing ring (115A, 125A) between bipolar plate frame: two kinds of fluororubber O-type rings that use 719 millimeters of wire diameter 2.65,703 millimeters of diameters and diameters respectively as the second O-ring seals and the first O-ring seals and.
Amberplex: use the self-control homogeneous phase cation exchange film, ion exchange capacity 1.6mmol/g dry film, 0.18 millimeter of thickness, membrane surface resistance are lower than 2.2 Ω .cm
2
Electrode (6): 2～4 millimeters commercially available carbon felts of used thickness
Pressure strip (1): use 316 stainless steel materials to make, 850 millimeters of length, 450 millimeters of width, 15 millimeters of thickness.
According to shown in Figure 4, with above-mentioned battery component align successively assemble after, use the stainless steel trip bolt locking of 12 millimeters of diameters, finish the flow cell pile assembling.
By above-described embodiment, prove the new structure of bipolar plate of redox flow battery electrode frame proposed by the invention, avoid two kinds of interpenetrative possibilities of electrolyte from principle.The two-layer O RunddichtringO of arranging inside and outside the employing is pressed in respectively between amberplex and the sheet frame, forms labyrinth sealing; Electrolyte flows through by the electrolyte passage of arranging with exterior domain at inside and outside two-layer O RunddichtringO of arranging.The two-layer O RunddichtringO that the electrolyte that flows through in public runner is arranged inside and outside having no chance to pass is thoroughly stopped the mixing that the pile hermetically-sealed construction is passed in pile inside.Use bipolar plate of redox flow battery frame of the present invention and electric pile structure, avoid in the past battery structure complexity, make and the assembling hard problem, can Effective Raise cell charging/discharging Process Energy efficient, reduce the pile cost, large-scale electric energy transforms and the chemical power source technology of storage lays the foundation for development is used for.
Claims (9)
1. the bipolar plate frame of a flow battery is characterized in that, contains: top electrode frame (11), bottom electrode frame (12) and bipolar plates (2), wherein:
Bipolar plates (2), be sandwiched between described top electrode frame (11) and the bottom electrode frame (12), the area of described bipolar plates is equal to or greater than top electrode frame (11), or the area of bottom electrode frame (12), respectively have the first electrolyte stream via hole 211 in both sides, described bipolar plates axis, the 211 ' and second electrolyte stream via hole 212,212 '
The area of described top electrode frame (11) and bottom electrode frame (12) is equal, wherein:
Top electrode frame (11), have anolyte ostium (111) and anolyte tap hole (112) in the both sides, axis, wherein, described anolyte ostium (111) is coaxial relative with the first electrolyte stream via hole 211 on the described bipolar plates (2), described anolyte tap hole (112) is coaxial relative with described bipolar plates the first electrolyte stream via hole 211 ', have the anode electrolysis liquid bath (113) that communicates with described anolyte ostium (111) at the described top electrode frame (11) near described bipolar plates (2) one sides, have along described anode electrolysis liquid bath (113) the equally distributed anolyte distributing slot of length direction (114) in described bipolar plates (2) one sides that link to each other with this anode electrolysis liquid bath (113), flow through hole A (117) at catholyte, and catholyte flows through hole B (118) periphery and is provided with O-ring seals (7) groove (116) that hermetic electrolyte liquid is used
Bottom electrode frame (12), have catholyte ostium (121) and catholyte tap hole (122) in the both sides, axis, wherein, described catholyte ostium (121) is coaxial relative with the second electrolyte stream via hole 212 on the described bipolar plates (2), described catholyte tap hole (122) is coaxial relative with the second electrolyte stream via hole 212 ' on the described bipolar plates (2), have the catholyte tanks (123) that communicates with described catholyte ostium (121) at described bottom electrode frame (12) near described bipolar plates (2) one sides, have equally distributed catholyte distributing slot (124) in described catholyte tanks (123) along the slot length direction, flow through hole A (127) at anolyte, and anolyte flows through hole B (128) periphery and is provided with O-ring seals (7) groove (126) that hermetic electrolyte liquid is used
Not with described top electrode frame (11) that described bipolar plates (2) directly contacts on, have the first seal groove (115) in the inboard of described anode electrolysis liquid bath (113), be used for settling an O RunddichtringO (115A), described O RunddichtringO (115A) position is between described anolyte ostium (111) and anolyte tap hole (112)
Not with described bottom electrode frame (12) that described bipolar plates (2) directly contacts on, have the second seal groove (125) in the inboard of described catholyte tanks (123), be used for settling the 2nd O RunddichtringO (125A), described the 2nd O RunddichtringO (125A) position is between described catholyte ostium (121) and catholyte tap hole (122)
The outside of described the second seal groove of the inner distance of described the first seal groove (115) (125) is at least 2 millimeters.
2. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: described the first seal groove (115) is positioned at described anolyte ostium (111), anolyte tap hole (112), and the inboard of anode electrolysis liquid bath (113); Described the second seal groove (125) is positioned at described catholyte ostium (121), catholyte tap hole (122), and the inboard of catholyte tanks (123).
3. the bipolar plate frame of a kind of flow battery according to claim 1 is characterized in that: between described bipolar plates (2) and described top electrode frame (11), the bottom electrode frame (12) by bonding or elastic sealing gasket or heat merges welding or the laser welding mode connects.
4. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: the material of described bipolar plates (2) possesses the On current ability, uses graphite cake or conductive plastic plate or metallic plate to make.
5. the bipolar plate frame of a kind of flow battery according to claim 1 is characterized in that: top electrode frame (11), bottom electrode frame (12) are by a kind of or two or more mixtures of following macromolecule engineering plastics: polyvinyl chloride, polyethylene, polypropylene, Merlon, Kynoar are made.
6. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: top electrode frame (11), bottom electrode frame (12) use engineering plastics of the same race, adopt plastic injection technological forming or plastic mould pressing technological forming.
7. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: the shape of described the first seal groove (115) and the second seal groove (125) is rectangle.
8. the bipolar plate frame of a kind of flow battery according to claim 1, it is characterized in that: when using described bipolar plate frame to form battery pile, described battery pile is in series by two above bipolar plate frames, in described top electrode frame (11), bottom electrode frame (12), fill electrode (6), between the described O RunddichtringO (115A) on the adjacent bipolar plate frame and the 2nd O RunddichtringO (125A), place amberplex (8); Described battery pile upper/lower terminal sets gradually respectively and the upper and lower charging unipolar plate (9) of aliging of described bipolar plate frame and pressure strip (1), uses screw (3) that pile is compressed until electrolyte does not leak.
9. the bipolar plate frame of a kind of flow battery according to claim 8, it is characterized in that: the area of described amberplex (8) does not hinder anolyte, catholyte to flow through top electrode frame (11) and bottom electrode frame (12) greater than the area that described the first seal groove (115) surrounds.
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| CN102569833A (en) * | 2010-12-17 | 2012-07-11 | 上海空间电源研究所 | Bipolar plate of redox flow battery |
| CN102288918A (en) * | 2011-05-09 | 2011-12-21 | 清华大学 | Redox flow cell stack testing mechanism for laboratory scientific research testing |
| CN102306821B (en) * | 2011-07-08 | 2014-07-23 | 清华大学 | End plate pressing component of redox flow cell galvanic pile |
| CN102569843B (en) * | 2012-01-13 | 2014-10-29 | 清华大学 | Embedded electrode frame of flow cell pile |
| CN103840180B (en) * | 2012-11-23 | 2016-08-03 | 中国科学院大连化学物理研究所 | A kind of flow battery linear sealing structure with self-locating function |
| US10301200B2 (en) * | 2013-03-15 | 2019-05-28 | Evoqua Water Technologies Llc | Flow distributors for electrochemical separation |
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| CN111261891A (en) * | 2018-11-30 | 2020-06-09 | 中国科学院大连化学物理研究所 | Weldable bipolar plate for flow battery and preparation and application thereof |
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| CN112952136A (en) * | 2019-12-10 | 2021-06-11 | 中国科学院大连化学物理研究所 | Integrated bipolar plate electrode frame and vanadium redox flow battery comprising same |
| CN111446465B (en) * | 2020-04-08 | 2021-10-19 | 承德新新钒钛储能科技有限公司 | Integrated plate frame and electric pile of flow battery |
| CN114551928B (en) * | 2021-12-25 | 2024-02-20 | 安徽明天氢能科技股份有限公司 | Double-pile parallel device for fuel cell |
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| US6905797B2 (en) * | 2001-04-12 | 2005-06-14 | Squirrel Holdings Ltd. | Porous mat electrodes for electrochemical reactor having electrolyte solution distribution channels |
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|---|---|---|---|---|
| CN1761096A (en) * | 2005-11-18 | 2006-04-19 | 清华大学 | Galvanic pile structure of energy-storing unit of oxidation-reduction fluid flow battery |
| CN1845370A (en) * | 2006-03-10 | 2006-10-11 | 清华大学 | Flow battery making electrolyte cross porous electrode |
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