CN103579641A - Pile structure of flow battery - Google Patents
Pile structure of flow battery Download PDFInfo
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- CN103579641A CN103579641A CN201210276212.3A CN201210276212A CN103579641A CN 103579641 A CN103579641 A CN 103579641A CN 201210276212 A CN201210276212 A CN 201210276212A CN 103579641 A CN103579641 A CN 103579641A
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- sheet frame
- negative pole
- sprue
- anodal
- flow passage
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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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
- H01M8/04283—Supply means of electrolyte to or in matrix-fuel cells
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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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- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/249—Grouping of fuel cells, e.g. stacking of fuel cells comprising two or more groupings of fuel cells, e.g. modular assemblies
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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
Abstract
The invention relates to a pile structure of a flow battery. The pile structure comprises an anode-end pressure plate, a cathode-end pressure plate and fasteners. A plurality of single flow batteries are vertically overlapped and are fixedly arranged between the anode-end pressure plate and the cathode-end pressure plate through the fasteners to form a pile. Each single flow battery comprises bipolar plates and a membrane electrode assembly clamped between the bipolar plates, and the bipolar plates comprise a plate frame and an electrode plate which is arranged in an inner frame of the plate frame. The plate frame of the bipolar plates and the inner frame of the plate frame are square or rectangular, and a fluid in and out hole and a fluid channel are formed in the plate frame of the bipolar plates. The fluid channel comprises a main flow channel and a branch flow channel, and the main flow channel is arranged around the plate frame of the bipolar plates. One end of the main flow channel is connected with the fluid in and out hole, and the other end of the main flow channel is connected with the branch flow channel which is communicated with the inner frame. Compared with the prior art, the pile structure has the advantages of not being self-discharged, being easily sealed and the like.
Description
Technical field
The present invention relates to a kind of technical field of new energies, especially relate to a kind of electric pile structure of flow battery.
Background technology
Utilizing the renewable energy power generations such as wind energy, solar energy is the topmost mode that the mankind utilize generation of electricity by new energy in the future.Because being subject to natural cause, wind energy, solar power generation process affect as weather etc., have randomness, discontinuous feature, the electric energy that is difficult to keep stable is exported, and the apparatus for storing electrical energy of needs and certain scale matches, the electric power system of complete, guarantees continual and steady electric power supply.Therefore, exploitation electric energy conversion efficiency energy-storage system high, that storage volume is large, economic performance is good becomes the key problem in technology that utilizes generation of electricity by new energy.With various forms of energy storage technologies, the feature such as such as retaining energy-accumulating power station, high speed flywheel mechanical energy storage, superconducting energy storage etc. compared, and it is high that electrochemical energy storage has energy conversion efficiency, and mobility is strong has unique advantage in all kinds of energy storage technologies.In various electrochemical energy storage technology, flow battery system has large capacity electrical power storage and Efficient Conversion function, and the feature of long service life, environmental protection, safety, is easy to match with wind energy, solar power generation, can significantly reduce equipment manufacturing cost, for generation of electricity by new energy provides technique guarantee.For network system energy storage, the uninterrupted power supply that is suitable for medium-scale industrial enterprise, hotel, government department is used, and can effectively improve grid supply quality, completes " 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 v element of the same race to form battery system, from principle, avoided variety classes active material between positive and negative half-cell to interpenetrate the cross pollution of generation.(Fig. 1) use and to be dissolved in that in electrolyte, different valence state vanadium ion is as anode and negative electrode active material, anode electrolyte and negative pole electrolyte separately store, and from principle, avoid battery storage process self-discharge phenomenon, are suitable for extensive thermal energy storage process application.Anodal E and negative pole E that anode electrolyte storage tank B and negative pole electrolyte storage tank A are all-vanadium flow battery by magnetic drive pump D provide electrolyte, and anodal E and negative pole E ' separate by amberplex G, are power source loads C power supply.When the power of wind energy, device of solar generating surpasses rated output power, by the charging to flow battery, by electric energy conversion, be that chemical energy is stored in the ion pair of different valence state; When Blast Furnace Top Gas Recovery Turbine Unit (TRT) can not meet rated output power, flow battery starts electric discharge, and the chemical energy storing is converted into electric energy, guarantees stable electrical power stage.Due to the significance of flow battery for renewable energy power generation processes such as wind energy, solar energy, as key technology, obtain common concern at home and abroad.
, on electrode, will there is following redox reaction in all-vanadium flow battery charge/discharge running.
Anodal reaction:
E
0＝1.00V
Negative reaction:
Because anode electrolyte and negative pole electrolyte are respectively in oxidizability valence state and reproducibility valence state, no matter be 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, exchang electron produces self-discharge phenomenon each other, has a strong impact on battery efficiency.Normal conditions, two kinds of electrolyte transfer pipelines, delivery pump, and reservoir vessel easily realizes independently of one another, do not produce anode electrolyte and negative pole electrolyte mixed problem.Yet electrolyte, at pile internal flow process and the flow process that flows through storage container, exists three kinds to cause that positive pole, negative pole electrolyte mix or self-discharge phenomenon.1) pass the mixing of amberplex: when amberplex is not good enough for vanadium ion barrier properties, cell charging/discharging running is followed 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) through the mixing of pile hermetically-sealed construction: two kinds of electrolyte need to pass same interface simultaneously, and be assigned to electrode surface and carry out electrochemical reaction.Pile sealing will guarantee that electrolyte can not leak into pile outside, guarantees that again pile inside do not go here and there liquid to each other, particularly in same plane, realizes amberplex and two kinds of electrolyte seal simultaneously, often very difficult.Existing flow battery technology (China Patent Publication No.: 1531761A, 1515046A) adopts O type sealing ring crimping barrier film and hermetic electrolyte liquid mode simultaneously, carries out 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 sealing position, produce mixed self discharge problem.3) during by each monocell of electrolyte supply, exist it with electrolyte, to import and export total pipeline, or be common conduit, cause each inside battery to produce by-pass current, cause self-discharge of battery, and cause battery capacity partial loss.
In order to solve the inner three kinds of electrolyte of pile of existing flow battery, from sealing position, leak, intersect and leak and reduce by electrolyte self discharge problem, avoid electrolyte to hand over justice to pollute, reduce by electrolyte self discharge, improve coulombic efficiency.Patent application 20091007843.2 discloses a kind of flow battery, its positive and negative liquid stream sheet frame and inside casing thereof are square or rectangle, one jiao of positive and negative liquid flow frame plate bottom arranges inlet opening, another angle arranges liquid pass hole, one jiao, top arranges fluid hole, another angle arranges liquid pass hole, just, negative liquid stream sheet frame upper and lower is respectively equipped with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel and fluid branch flow channel are evenly by three roundabout connecting and composing of long straight trough head and the tail, the length of the liquid in-out branch flow channel that has been multiplied, thereby the electrolyte that has been multiplied enters, the resistance of fluid branch flow channel, thereby reduced at double flow battery self discharge electric current, greatly improved the energy efficiency of flow battery.
But this scheme, the public dispensing orifice of turnover fluid is all arranged on deckle board, and that public dispensing orifice will be quadratured is larger, cause deckle board area to increase, and the electrolyte that public dispensing orifice flows out not directly enters electrode, but import by S type liquid in-out branch flow channel, S type liquid in-out branch flow channel is also arranged on deckle board, area occupied is large, cause deckle board volume large, waste material, and the sealing of S type liquid in-out branch flow channel is more difficult, in order to make the sealing of S type fluid passage, be provided with cover plate and cover S type fluid passage, but be still difficult to sealing, especially work as battery operation, when temperature raises, owing to expanding with heat and contract with cold, seal more difficult, easily there is electrolyte channelling, cause self discharge, in addition, S type fluid passage flow is limited, flow resistance is handed over large, increased the power consumption of the electrolyte delivery pump of whole flow battery system, thereby reduced system effectiveness.
Summary of the invention
Object of the present invention be exactly in order to overcome the defect that above-mentioned prior art exists, provide a kind of can self discharge, the easily electric pile structure of the flow battery of sealing.
Object of the present invention can be achieved through the following technical solutions: a kind of electric pile structure of flow battery, comprise positive terminal pressing plate, negative pole end pressing plate, securing member, a plurality of liquid stream monocells superpose up and down and are fixedly installed between positive terminal pressing plate and negative pole end pressing plate and are formed pile by securing member, described liquid stream monocell comprises bipolar plates, and be folded in the membrane electrode assembly between bipolar plates, described bipolar plates comprises the battery lead plate arranging in the inside casing of sheet frame and sheet frame, bipolar plates sheet frame and inside casing thereof are square or rectangle, bipolar plates sheet frame is provided with fluid passing hole and fluid passage, it is characterized in that, described fluid passage comprises sprue and branch flow passage, described sprue arranges along bipolar plates sheet frame surrounding, its one end connects fluid passing hole, the other end connects branch flow passage, branch flow passage is communicated with inside casing.
The length of described sprue is according to the conductivity setting of electrolyte, sprue is along the setting of walking on one side of bipolar plates sheet frame, its length is bipolar plates sheet frame length on one side, or sprue is along the polygon walking setting of bipolar plates sheet frame, its length is the polygon length sum of bipolar plates sheet frame, or sprue arranges along bipolar plates sheet frame periphery circulation walking.
Described branch flow passage comprises a long straight trough and a comb shape groove, and described long straight trough one end is communicated with sprue, and is communicated with inside casing by comb shape groove.
Described bipolar plates sheet frame is bonding or form by sealing ring pressing by positive plate sheet frame and its adjacent single cells negative plate sheet frame, the inside casing of positive plate sheet frame and its adjacent single cells negative plate sheet frame shares a conductive plate and forms bipolar plates, is provided with membrane electrode assembly between adjacent bipolar plates.
Described positive plate sheet frame front arranges anodal branch flow passage, reverse side arranges anodal sprue, anode electrolyte flow to positive anodal branch flow passage from fluid passing hole flow to the anodal sprue of reverse side again, from anodal branch flow passage, flow to inside casing, described anodal branch flow passage shape consists of a strip straight trough and comb shape groove; Described negative plate sheet frame shape and positive plate sheet frame are roughly the same, front arranges negative pole branch flow passage, reverse side arranges negative pole sprue, negative pole electrolyte flow to positive negative pole branch flow passage from fluid passing hole flow to the negative pole sprue of reverse side again, from negative pole branch flow passage, flow to inside casing, described negative pole branch flow passage shape consists of a strip straight trough and comb shape groove.
Described positive plate sheet frame front arranges anodal branch flow passage and anodal sprue, and described negative plate sheet frame front arranges negative pole branch flow passage and negative pole sprue.
Described positive plate sheet frame front arranges anodal branch flow passage, and reverse side arranges anodal sow (channel) a and negative pole sow (channel) a, described negative plate sheet frame front arranges negative pole branch flow passage, reverse side arranges anodal sow (channel) b and the negative pole sow (channel) b corresponding with positive plate sheet frame reverse side, the reverse side of positive plate sheet frame and negative plate sheet frame is bonding or press together formation bipolar plates by sealing ring, be arranged in the anodal sow (channel) a of its interlayer and anodal sow (channel) b is bonding or pressing after form anodal sprue, after the bonding or pressing of negative pole sow (channel) a and negative pole sow (channel) b, form negative pole sprue, anode electrolyte flow to positive anodal branch flow passage after fluid passing hole flow to the anodal sprue interlayer again, from anodal branch flow passage, flow to inside casing, negative pole electrolyte flow to positive negative pole branch flow passage from fluid passing hole flow to the negative pole sprue of reverse side again, from negative pole branch flow passage, flow to inside casing.
In described anodal sprue and/or negative pole sprue, be provided with built-in pipe.
On described positive plate sheet frame and negative plate sheet frame, be respectively provided to a few seal groove and place sealing ring, in same monocell, the amberplex both sides that are pressed in respectively same membrane electrode assembly between positive plate sheet frame and negative plate sheet frame, seal by sealing ring; Between positive plate sheet frame in adjacent two monocells and negative plate sheet frame, be pressed in respectively on same conductive plate, by sealing ring, seal.
Described membrane electrode assembly is comprised of two carbon felt sandwiched amberplexes, and described carbon felt is provided with for transmitting many runners that equidistantly distribute of electrolyte, and the material of described sheet frame is plastic material, comprises PP, PE and PVC.
Compared with prior art, the present invention has the following advantages:
1. on bipolar plates sheet frame, arrange along surrounding fluid passage is set, its length can determine according to the conductance of electrolyte, thereby the path of flowing through that changes electrolyte by changing the length of fluid passage changes the resistance of electrolyte, than being set on sheet frame, S type runner easily seals, reduce and leak, make self discharge be reduced to minimum;
2. the sprue of fluid passage is arranged on bipolar plates sheet frame reverse side, and it is separated with positive fluid that participates in react, can channelling, and minimizing self discharge;
3. built-in pipe is set in sprue, as long as by built-in pipe end seal, simple, effective, reduce and leak and self discharge.
Accompanying drawing explanation
Fig. 1 is all-vanadium flow battery schematic diagram;
Fig. 2 is positive plate sheet frame front schematic view;
Fig. 3 is positive plate sheet frame reverse side schematic diagram;
Fig. 4 is negative plate sheet frame front schematic view;
Fig. 5 is negative plate sheet frame reverse side schematic diagram;
Fig. 6 is the structural representation of monocell;
Fig. 7 is the schematic diagram of end plate;
Fig. 8 is the schematic diagram of liquid stream battery stack.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Fig. 2-8, a kind of electric pile structure of flow battery, by a plurality of liquid stream monocells, superpose up and down and at upper and lower two ends, positive terminal pressing plate be set respectively, negative pole end pressing plate forms, pile housing is of a size of 805mm * 805mm, described liquid stream monocell comprises bipolar plates, and be folded in the membrane electrode assembly between bipolar plates, described bipolar plates comprises the battery lead plate arranging in the inside casing of sheet frame and sheet frame, this bipolar plates sheet frame and inside casing thereof are square, bipolar plates sheet frame is provided with fluid passing hole and fluid passage, described fluid passage comprises sprue and branch flow passage, described sprue arranges along bipolar plates sheet frame surrounding, its one end connects fluid passing hole, the other end connects branch flow passage, branch flow passage is communicated with inside casing.
As shown in Figure 6, described bipolar plates sheet frame comprises positive plate sheet frame 1 and negative plate sheet frame 2, conductive plate is set in the inside casing of positive plate sheet frame 1 and forms positive plate, graphite cake 3 is set in negative plate sheet frame and forms negative plate, between positive plate and negative plate, be provided with membrane electrode assembly and form monocell, described membrane electrode assembly is comprised of two blocks of carbon, 4 felt sandwiched amberplexes 5, and described carbon felt 4 is provided with for transmitting many runners that equidistantly distribute of electrolyte.
As Figure 2-3, described positive plate sheet frame 1 front arranges anodal branch flow passage 11, reverse side arranges anodal sprue 12, anodal branch flow passage 11 is comprised of a long straight trough a111 and a comb shape groove a112, described long straight trough a111 one end is communicated with anodal sprue 12, and being communicated with inside casing by comb shape groove a112, described anodal sprue 12 is the runner arranging around the 1 reverse side circulation of positive plate sheet frame.On the relative both sides of positive plate sheet frame 1, be arranged on that anodal branch flow passage enters guiding gutter as electrolyte respectively and electrolyte goes out guiding gutter.Anode electrolyte flow to positive anodal branch flow passage 11 from the fluid inlet hole 13 of entrance point flow to the anodal sprue a121 of reverse side again, from long straight trough a111, flow into, from comb shape groove a112, flow to inside casing again, the runner of flowing through on carbon felt participates in after reaction, from the comb shape groove b114 of the port of export, flow to long straight trough b114, then anodal sprue b122 from the negative flow to the fluid 14 rear outflows of portalling;
As shown in Fig. 4-5, described negative plate sheet frame shape is identical with positive plate sheet frame, and front arranges negative pole branch flow passage, and reverse side arranges negative pole sprue, negative pole electrolyte flow to positive negative pole branch flow passage from fluid passing hole flow to the negative pole sprue of reverse side again, from negative pole branch flow passage, flows to inside casing.
In negative pole sprue, be provided with built-in pipe 6, built-in pipe 6 is sealed plastic flexible pipe, is fixed in negative pole sprue, and its import and export are all sealing adhesive on negative plate sheet frame, and one end is connected with fluid passing hole, and the other end is connected with fluid passage.
Described positive plate sheet frame 1 obverse and reverse is equipped with seal groove, is provided with sealing ring in seal groove: sealing ring 15 and sealing ring 16, be pressed in respectively same membrane electrode assembly both sides sealing by corresponding sealing ring on sealing ring 15 and negative plate sheet frame; Between positive plate sheet frame in adjacent two monocells and negative plate sheet frame, by corresponding sealing ring on sealing ring 16 and negative plate, be pressed in respectively on same graphite cake and seal.
Monocell is layering, and at two ends, end plate is set, and end plate is comprised of the conductive plate 8 of current-collecting panel 7 and coupling, then by the fastening composition liquid stream battery stack of fastening bolt, as shown in Figure 8.
Embodiment 2
The length of described sprue is according to the conductivity setting of electrolyte, sprue is along the setting of walking on one side of bipolar plates sheet frame, its length is bipolar plates sheet frame length on one side, positive plate sheet frame front arranges anodal branch flow passage and anodal sprue, described negative plate sheet frame front arranges negative pole branch flow passage and negative pole sprue, in anodal sprue and negative pole sprue, is equipped with built-in pipe.All the other are with embodiment 1.
Sprue is also along the polygon walking setting of bipolar plates sheet frame, as three limits or circulate one week or week how, sprue and branch flow passage spaced out, and avoids channelling, can reduce self discharge.
Sprue and branch flow passage are separately positioned on positive plate sheet frame or negative plate sheet frame, even if built-in pipe is not set, also can well not reduce self discharge.
Sprue also can be arranged on branch flow passage top, and S-type setting arranges built-in pipe simultaneously in sprue, and electrolyte enters branch flow passage from the built-in pipe sealing flows through, and also can significantly reduce self discharge.
In same monocell, between positive plate sheet frame and negative plate sheet frame, membrane electrode assembly is set, in adjacent single cells, the inside casing of positive plate sheet frame and its adjacent single cells negative plate sheet frame shares a conductive plate, then positive plate sheet frame and its adjacent single cells negative plate sheet frame are formed to bipolar plates by sealing ring pressing, in this bipolar plates: positive plate sheet frame front arranges anodal branch flow passage, described anodal branch flow passage shape consists of a strip straight trough and comb shape groove, and reverse side arranges anodal sow (channel) a and negative pole sow (channel) a, negative plate sheet frame front arranges negative pole branch flow passage, negative pole branch flow passage shape consists of a strip straight trough and comb shape groove, reverse side arranges anodal sow (channel) b and the negative pole sow (channel) b corresponding with positive plate sheet frame reverse side, the reverse side of positive plate sheet frame and negative plate sheet frame presses together and forms bipolar plates sheet frame, the anodal sow (channel) a and the anodal sow (channel) b pressing that are arranged in its interlayer form anodal sprue, negative pole sow (channel) a and negative pole sow (channel) b pressing form negative pole sprue, anode electrolyte flow to positive anodal branch flow passage after fluid passing hole flow to the anodal sprue interlayer again, from the anodal branch flow passage strip straight trough comb shape groove of flowing through, enter inside casing, negative pole electrolyte flow to positive negative pole branch flow passage from fluid passing hole flow to the negative pole sprue of reverse side again, from the strip straight trough of the negative pole branch flow passage comb shape groove of flowing through, enter inside casing.
Claims (10)
1. the electric pile structure of a flow battery, comprise positive terminal pressing plate, negative pole end pressing plate, securing member, a plurality of liquid stream monocells superpose up and down and are fixedly installed between positive terminal pressing plate and negative pole end pressing plate and are formed pile by securing member, described liquid stream monocell comprises bipolar plates, and be folded in the membrane electrode assembly between bipolar plates, described bipolar plates comprises the battery lead plate arranging in the inside casing of sheet frame and sheet frame, bipolar plates sheet frame and inside casing thereof are square or rectangle, bipolar plates sheet frame is provided with fluid passing hole and fluid passage, it is characterized in that, described fluid passage comprises sprue and branch flow passage, described sprue arranges along bipolar plates sheet frame surrounding, its one end connects fluid passing hole, the other end connects branch flow passage, branch flow passage is communicated with inside casing.
2. the electric pile structure of a kind of flow battery according to claim 1, it is characterized in that, the length of described sprue is according to the conductivity setting of electrolyte, sprue is along the setting of walking on one side of bipolar plates sheet frame, its length is bipolar plates sheet frame length on one side, or sprue is along the polygon walking setting of bipolar plates sheet frame, its length is the polygon length sum of bipolar plates sheet frame, or sprue arranges along bipolar plates sheet frame periphery circulation walking.
3. the electric pile structure of a kind of flow battery according to claim 1, is characterized in that, described branch flow passage comprises a long straight trough and a comb shape groove, and described long straight trough one end is communicated with sprue, and is communicated with inside casing by comb shape groove.
4. the electric pile structure of a kind of flow battery according to claim 1, it is characterized in that, described bipolar plates sheet frame is bonding or form by sealing ring pressing by positive plate sheet frame and its adjacent single cells negative plate sheet frame, the inside casing of positive plate sheet frame and its adjacent single cells negative plate sheet frame shares a conductive plate and forms bipolar plates, is provided with membrane electrode assembly between adjacent bipolar plates.
5. the electric pile structure of a kind of flow battery according to claim 4, it is characterized in that, described positive plate sheet frame front arranges anodal branch flow passage, reverse side arranges anodal sprue, anode electrolyte flow to positive anodal branch flow passage from fluid passing hole flow to the anodal sprue of reverse side again, from anodal branch flow passage, flow to inside casing, described anodal branch flow passage shape consists of a strip straight trough and comb shape groove; Described negative plate sheet frame shape and positive plate sheet frame are roughly the same, front arranges negative pole branch flow passage, reverse side arranges negative pole sprue, negative pole electrolyte flow to positive negative pole branch flow passage from fluid passing hole flow to the negative pole sprue of reverse side again, from negative pole branch flow passage, flow to inside casing, described negative pole branch flow passage shape consists of a strip straight trough and comb shape groove.
6. the electric pile structure of a kind of flow battery according to claim 4, is characterized in that, described positive plate sheet frame front arranges anodal branch flow passage and anodal sprue, and described negative plate sheet frame front arranges negative pole branch flow passage and negative pole sprue.
7. the electric pile structure of a kind of flow battery according to claim 4, is characterized in that, described positive plate sheet frame front arranges anodal branch flow passage, and reverse side arranges anodal sow (channel) a and negative pole sow (channel) a, described negative plate sheet frame front arranges negative pole branch flow passage, reverse side arranges anodal sow (channel) b and the negative pole sow (channel) b corresponding with positive plate sheet frame reverse side, the reverse side of positive plate sheet frame and negative plate sheet frame is bonding or press together formation bipolar plates by sealing ring, be arranged in the anodal sow (channel) a of its interlayer and anodal sow (channel) b is bonding or pressing after form anodal sprue, after the bonding or pressing of negative pole sow (channel) a and negative pole sow (channel) b, form negative pole sprue, anode electrolyte flow to positive anodal branch flow passage after fluid passing hole flow to the anodal sprue interlayer again, from anodal branch flow passage, flow to inside casing, negative pole electrolyte flow to positive negative pole branch flow passage from fluid passing hole flow to the negative pole sprue of reverse side again, from negative pole branch flow passage, flow to inside casing.
8. according to the electric pile structure of a kind of flow battery described in claim 5 or 6 or 7, it is characterized in that, in described anodal sprue and/or negative pole sprue, be provided with built-in pipe.
9. the electric pile structure of a kind of flow battery according to claim 4, it is characterized in that, on described positive plate sheet frame and negative plate sheet frame, be respectively provided to a few seal groove and place sealing ring, in same monocell, the amberplex both sides that are pressed in respectively same membrane electrode assembly between positive plate sheet frame and negative plate sheet frame, seal by sealing ring; Between positive plate sheet frame in adjacent two monocells and negative plate sheet frame, be pressed in respectively on same conductive plate, by sealing ring, seal.
10. the electric pile structure of a kind of flow battery according to claim 4, it is characterized in that, described membrane electrode assembly is comprised of two carbon felt sandwiched amberplexes, described carbon felt is provided with for transmitting many runners that equidistantly distribute of electrolyte, the material of described sheet frame is plastic material, comprises PP, PE and PVC.
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| CN104393308A (en) * | 2014-10-20 | 2015-03-04 | 中国东方电气集团有限公司 | Bipolar plate and flow battery |
| CN109716570A (en) * | 2016-08-05 | 2019-05-03 | 昭和电工株式会社 | Redox flow batteries |
| CN111446465A (en) * | 2020-04-08 | 2020-07-24 | 承德新新钒钛储能科技有限公司 | Integrated plate frame and electric pile of flow battery |
| CN111682239A (en) * | 2020-06-17 | 2020-09-18 | 深圳市绿谷能源科技有限公司 | Metal fuel electric pile |
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| CN202888323U (en) * | 2012-08-03 | 2013-04-17 | 上海神力科技有限公司 | Electric pile structure of flow battery having less possibility of leaking |
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| CN109716570A (en) * | 2016-08-05 | 2019-05-03 | 昭和电工株式会社 | Redox flow batteries |
| CN111446465A (en) * | 2020-04-08 | 2020-07-24 | 承德新新钒钛储能科技有限公司 | Integrated plate frame and electric pile of flow battery |
| 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 |
| CN111682239A (en) * | 2020-06-17 | 2020-09-18 | 深圳市绿谷能源科技有限公司 | Metal fuel electric pile |
| CN111682239B (en) * | 2020-06-17 | 2021-05-11 | 深圳市绿谷能源科技有限公司 | Metal fuel electric pile |
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