CN103579658A - Flow battery pile - Google Patents
Flow battery pile Download PDFInfo
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- CN103579658A CN103579658A CN201210276050.3A CN201210276050A CN103579658A CN 103579658 A CN103579658 A CN 103579658A CN 201210276050 A CN201210276050 A CN 201210276050A CN 103579658 A CN103579658 A CN 103579658A
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- sheet 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
- H01M8/04—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 flow battery pile which comprises single flow batteries, an anode-end pressure plate, a cathode-end pressure plate and fasteners, wherein 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 a fluid in and out hole is formed in the bipolar plates. The bipolar plates comprise a plate frame and an electrode plate which is arranged in an inner frame of the plate frame. The four angles of the pile are respectively provided with an electrolyte in and out main pipe, and each electrolyte in and out main pipe is connected with the fluid in and out hole of each single flow battery through an electrolyte in and out branch pipe. Electrolyte flows into the pile to participate in an electrochemical reaction through the electrolyte in and out main pipes and the electrolyte in and out branch pipes outside the pile. Compared with the prior art, the flow battery pile has the advantages of not being self-discharged, being easily sealed, saving raw materials 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 liquid stream battery stack.
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:
Negative reaction:
E
0＝-0.26V
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 liquid stream battery stack of sealing.
Object of the present invention can be achieved through the following technical solutions: a kind of liquid stream battery stack, comprise liquid stream monocell, 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 is provided with fluid passing hole, bipolar plates comprises the conductive plate arranging in the inside casing of sheet frame and sheet frame, it is characterized in that, four jiaos of described piles are respectively equipped with electrolyte turnover house steward, each electrolyte turnover house steward passes in and out by electrolyte the fluid passing hole that arm connects each liquid stream monocell respectively, electrolyte flows to pile participation reaction by electrolyte turnover house steward and the electrolyte turnover arm being arranged on outside pile.
Described electrolyte turnover house steward comprises and is anode electrolyte feed liquor house steward and the anode electrolyte fluid house steward of diagonal angle distribution and is negative pole electrolyte feed liquor house steward and the negative pole electrolyte fluid house steward that diagonal angle distributes.
Described electrolyte turnover arm arranges along pile four limits, on one side its length is set to extend to electrolyte along pile as required, passes in and out house steward, or after the polygon rotation of pile, is connected to electrolyte turnover house steward.
The detachable connection of fluid passing hole of described electrolyte turnover arm one end and each liquid stream monocell, the other end passes in and out with electrolyte that house steward is detachable to be connected.
Described detachable connection comprises and being threaded or bite type connects.
Described bipolar plates comprises positive plate and negative plate, the sheet frame of positive plate and negative plate and inside casing thereof are square or rectangle, four jiaos of the sheet frames of positive plate are respectively established a projection a, projection a is provided with fluid passing hole, four jiaos of the sheet frames of negative plate are respectively established a projection b, projection b is provided with fluid passing hole, and the sheet frame of positive plate is and shifts to install with the rear projection a of the sheet frame of negative plate stack and projection b.
The sheet frame positive and negative of described positive plate is equipped with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel is arranged on fluid branch flow channel the both sides that sheet frame is relative, wherein feed liquor branch flow channel one end connects the upper fluid passing hole as anode electrolyte import of projection a, the other end is communicated with inside casing, fluid branch flow channel one end connects the upper fluid passing hole as anode electrolyte outlet of projection a, and the other end is communicated with inside casing;
The sheet frame positive and negative of described negative plate is equipped with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel is arranged on fluid branch flow channel the both sides that sheet frame is relative, wherein feed liquor branch flow channel one end connects the upper fluid passing hole as the import of negative pole electrolyte of projection b, the other end is communicated with inside casing, fluid branch flow channel one end connects the upper fluid passing hole as negative pole electrolyte outlet of projection b, and the other end is communicated with inside casing.
The part that described feed liquor branch flow channel and fluid branch flow channel enter after sheet frame forms by a long straight trough and comb shape groove, and wherein long straight trough is connected with fluid passing hole, and is communicated with inside casing by comb shape groove; Described long straight trough and comb shape groove top are embedded with cover plate.
The sheet frame of described positive plate is bonding or form by sealing ring pressing by the sheet frame b of sheet frame a and its adjacent single cells negative plate, in the interlayer of sheet frame a and sheet frame b, be provided with the drainage trough that is communicated with long straight trough and fluid passing hole, the sheet frame of negative plate is bonding or form by sealing ring pressing by the sheet frame d of sheet frame c and its adjacent single cells positive plate, is provided with the drainage trough that is communicated with long straight trough and fluid passing hole in the interlayer of sheet frame c and sheet frame d.
The sheet frame b positive and negative of the sheet frame a of described positive plate and negative plate is equipped with at least one seal groove, is provided with sealing ring in seal groove, is pressed in respectively on same conductive plate, and seals by sealing ring between described sheet frame a and sheet frame b; The sheet frame d positive and negative of the sheet frame c of described positive plate and negative plate is also equipped with at least one seal groove, is provided with sealing ring in seal groove, is pressed in respectively on same conductive plate, and seals by sealing ring between described sheet frame c and sheet frame d; In same monocell, between the negative plate that the positive plate that sheet frame a and sheet frame c form and sheet frame b and sheet frame d form, be pressed in respectively on same amberplex, by sealing ring, seal.
Described conductive plate comprises graphite cake, conductive plastic plate or metallic plate.
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. at pile, common electrical solution liquid distributing pipe is set outward, and by the outer pipeline arranging of pile, electrolyte is introduced to pile, the length of pipeline can determine according to the conductance of electrolyte, thereby the path of flowing through that changes electrolyte by changing the length of pipeline changes the resistance of electrolyte, makes self discharge be reduced to minimum;
2. adopt the pipeline outside pile to connect as long as at junction enhanced leaktightness, than S type runner is set on sheet frame, easily seal, reduce and leak;
3. by the fluid passing hole on pipe connecting frame, directly being connected public electrolyte distributing pipe with fluid passing hole compares, its area can be relatively little, and fluid passing hole is introduced bipolar plates by the drainage trough being arranged in interlayer, be difficult on the one hand leaking, drainage trough can be arranged to the groove that area is larger as required on the other hand, neither affect the amount that electrolyte enters bipolar plates, portion takies the effective area of sheet frame again, in addition, too much runner need to be set on sheet frame, what therefore the volume of sheet frame can arrange is smaller, effective area is larger, save material,
4. pile can freely be dismantled, for ease of maintenaince.
Accompanying drawing explanation
Fig. 1 is all-vanadium flow battery schematic diagram;
Fig. 2 is the structural representation of liquid stream battery stack of the present invention;
Fig. 3 is liquid stream monocell exploded view;
Fig. 4 is liquid stream monocell assembly drawing;
Fig. 5 is the sheet frame a14 front schematic view of positive plate;
Fig. 6 is the sheet frame a14 reverse side schematic diagram of positive plate;
Fig. 7 is the sheet frame b15 front schematic view of negative plate;
Fig. 8 is the sheet frame b15 reverse side schematic diagram of negative plate;
Fig. 9 is the sheet frame c16 front schematic view of positive plate;
Figure 10 is the sheet frame c16 reverse side schematic diagram of positive plate;
Figure 11 is the sheet frame d17 front schematic view of negative plate;
Figure 12 is the sheet frame d17 reverse side schematic diagram of negative plate;
Figure 13 is the schematic diagram of positive terminal pressing plate.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Figure 2, a kind of liquid stream battery stack, comprise liquid stream monocell 1, housing is of a size of 600mm * 500mm, positive terminal pressing plate 2, negative pole end pressing plate 3, securing member 4, a plurality of liquid stream monocells 1 superpose up and down and are fixedly installed between positive terminal pressing plate 2 and negative pole end pressing plate 3 and are formed pile by securing member, four jiaos of described piles are respectively equipped with electrolyte turnover house steward 5, each electrolyte turnover house steward 5 passes in and out by electrolyte the fluid passing hole that arm 6 connects each liquid stream monocell respectively, electrolyte flows to pile participation reaction by electrolyte turnover house steward 5 and the electrolyte turnover arm 6 being arranged on outside pile.Described electrolyte turnover house steward comprises and is anode electrolyte feed liquor house steward and the anode electrolyte fluid house steward of diagonal angle distribution and is negative pole electrolyte feed liquor house steward and the negative pole electrolyte fluid house steward that diagonal angle distributes.Described electrolyte turnover arm 6 arranges along pile four limits, on one side its length is set to extend to electrolyte along pile as required, passes in and out house steward 5, or after the polygon rotation of pile, is connected to electrolyte turnover house steward.Described electrolyte turnover arm 6 one end are threaded with the fluid passing hole of each liquid stream monocell, the other end and electrolyte turnover house steward clamping.
As shown in Fig. 3-12, described liquid stream monocell comprises bipolar plates, and be folded in the membrane electrode assembly between bipolar plates, membrane electrode is comprised of two carbon felts, 11 sandwiched amberplexes 12, described carbon felt 11 is provided with for transmitting many runners that equidistantly distribute of electrolyte, described bipolar plates is provided with fluid passing hole, bipolar plates comprises the graphite cake 13 arranging in the inside casing of sheet frame and sheet frame, described bipolar plates comprises positive plate and negative plate, four jiaos of the sheet frames of positive plate are respectively established a projection a7, projection a7 is provided with fluid passing hole, four jiaos of the sheet frames of negative plate are respectively established a projection b8, projection b8 is provided with fluid passing hole, positive plate is and shifts to install with the rear projection a7 of negative plate stack and projection b8.
As shown in Fig. 5-8, the sheet frame of positive plate is bonded by sheet frame a14 and the sheet frame b15 that is adjacent monocell negative plate, sheet frame a14 front is provided with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel is arranged on fluid branch flow channel the both sides that sheet frame is relative, its part entering after sheet frame is comprised of a long straight trough 141 and comb shape groove 142, wherein long straight trough 141 is connected with fluid passing hole, and be communicated with inside casing by comb shape groove 142, sheet frame a14 reverse side is provided with drainage trough a143, drainage trough a143 one end connects long straight trough 141 terminations, the other end connects the fluid passing hole on projection a7, long straight trough 141 and comb shape groove 142 tops that feed liquor branch flow channel and fluid branch flow channel enter after sheet frame are equipped with supporting cover plate 9,
Sheet frame b15 reverse side is provided with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel is arranged on fluid branch flow channel the both sides that sheet frame is relative, by a long straight trough 151 and comb shape groove 152, formed, wherein long straight trough 151 is connected with fluid passing hole, and be communicated with inside casing by comb shape groove 152, sheet frame b15 reverse side is provided with drainage trough a153, drainage trough a153 one end connects long straight trough 151 terminations, the other end connects the fluid passing hole on projection a7, after the front of the reverse side of sheet frame a14 and sheet frame b15 is bonding, drainage trough a143 and drainage trough b153 form fluid passage, anode electrolyte enters from the electrolyte import 71 of positive one jiao of sheet frame a14, the fluid passage forming from the interlayer of sheet frame a14 and sheet frame b15 enters the long straight trough 141 of the side that is connected with electrolyte import, through comb shape groove 142, flow to inside casing, after membrane electrode assembly reaction, successively by the comb shape groove of opposite side, long straight trough and drainage trough, from electrolyte outlet 72, flow out.
Described sheet frame a14 front is provided with two seal grooves, in seal groove, be provided with double-layer seal rings 144, reverse side is provided with seal groove, in sealing groove, be provided with sealing ring 145, sheet frame b15 front is provided with seal groove, is provided with sealing ring 154 in sealing groove, reverse side is provided with seal groove, in sealing groove, be provided with sealing ring 155, between described sheet frame a14 and sheet frame b15, be pressed in respectively on same graphite cake 13, and by sealing ring 145 and 154 sealings of sealing sealing ring;
In like manner, the sheet frame positive and negative of described negative plate is equipped with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel is arranged on fluid branch flow channel the both sides that sheet frame is relative, wherein feed liquor branch flow channel one end connects the upper fluid passing hole as the import of negative pole electrolyte of projection b, the other end is communicated with inside casing, fluid branch flow channel one end connects the upper fluid passing hole as negative pole electrolyte outlet of projection b, and the other end is communicated with inside casing.Feed liquor branch flow channel and fluid branch flow channel form by a long straight trough and comb shape groove, and wherein long straight trough is connected with fluid passing hole, and are communicated with inside casing by comb shape groove; In described feed liquor branch flow channel and fluid branch flow channel, be embedded with cover plate.
The sheet frame of negative plate is bonded by the sheet frame c16 of sheet frame d17 and its adjacent single cells positive plate, is provided with the drainage trough that is communicated with long straight trough and fluid passing hole in the interlayer of sheet frame c16 and sheet frame d17.
Between described sheet frame c and sheet frame d, be pressed in respectively on same conductive plate, and seal by sealing ring; In same monocell, between the negative plate that the positive plate that sheet frame a14 and sheet frame b15 form and sheet frame c and sheet frame d form, be pressed in respectively on same amberplex, by double-layer seal rings on positive plate 144, seal with sealing ring corresponding on negative plate.
As shown in figure 13, described positive terminal pressing plate 2 comprises supporting conductive plate 22 in panel 21 and panel.In like manner negative pole end pressing plate 3 also comprises supporting conductive plate in panel and panel.
The material of described sheet frame is PP plastic material, and described fastening piece is by supporting compositions such as screw rod, screw, nuts.
The sheet frame of described positive plate is formed by sealing ring pressing by the sheet frame b of sheet frame a and its adjacent single cells negative plate, and the sheet frame of negative plate is formed by sealing ring pressing by the sheet frame d of sheet frame c and its adjacent single cells positive plate.
The material of described sheet frame is PE plastic material, and conductive plate is conductive plastic plate, and the seal groove on sheet frame arranges 1, and all the other are with embodiment 1.
The material of sheet frame also can be PVC plastic material, and conductive plate can also be metallic plate etc.
Described conductive plate can be graphite cake as described in Example 1, can be also conductive plastic plate or.Seal groove on sheet frame can arrange as required 3 or 4 even more etc.
Claims (10)
1. a liquid stream battery stack, comprise liquid stream monocell, 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 is provided with fluid passing hole, bipolar plates comprises the conductive plate arranging in the inside casing of sheet frame and sheet frame, it is characterized in that, four jiaos of described piles are respectively equipped with electrolyte turnover house steward, each electrolyte turnover house steward passes in and out by electrolyte the fluid passing hole that arm connects each liquid stream monocell respectively, electrolyte flows to pile participation reaction by electrolyte turnover house steward and the electrolyte turnover arm being arranged on outside pile.
2. a kind of liquid stream battery stack according to claim 1, it is characterized in that, described electrolyte turnover house steward comprises and is anode electrolyte feed liquor house steward and the anode electrolyte fluid house steward of diagonal angle distribution and is negative pole electrolyte feed liquor house steward and the negative pole electrolyte fluid house steward that diagonal angle distributes; Described electrolyte turnover arm arranges along pile four limits, on one side its length is set to extend to electrolyte along pile as required, passes in and out house steward, or after the polygon rotation of pile, is connected to electrolyte turnover house steward.
3. a kind of liquid stream battery stack according to claim 1 and 2, is characterized in that, the detachable connection of fluid passing hole of described electrolyte turnover arm one end and each liquid stream monocell, the other end passes in and out with electrolyte that house steward is detachable to be connected.
4. a kind of liquid stream battery stack according to claim 3, is characterized in that, described detachable connection comprises and being threaded or bite type connects.
5. a kind of liquid stream battery stack according to claim 1, it is characterized in that, described bipolar plates comprises positive plate and negative plate, the sheet frame of positive plate and negative plate and inside casing thereof are square or rectangle, four jiaos of the sheet frames of positive plate are respectively established a projection a, and projection a is provided with fluid passing hole, and four jiaos of the sheet frames of negative plate are respectively established a projection b, projection b is provided with fluid passing hole, and the sheet frame of positive plate is and shifts to install with the rear projection a of the sheet frame of negative plate stack and projection b.
6. a kind of liquid stream battery stack according to claim 5, it is characterized in that, the sheet frame positive and negative of described positive plate is equipped with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel is arranged on fluid branch flow channel the both sides that sheet frame is relative, wherein feed liquor branch flow channel one end connects the upper fluid passing hole as anode electrolyte import of projection a, the other end is communicated with inside casing, fluid branch flow channel one end connects the upper fluid passing hole as anode electrolyte outlet of projection a, and the other end is communicated with inside casing;
The sheet frame positive and negative of described negative plate is equipped with feed liquor branch flow channel and fluid branch flow channel, feed liquor branch flow channel is arranged on fluid branch flow channel the both sides that sheet frame is relative, wherein feed liquor branch flow channel one end connects the upper fluid passing hole as the import of negative pole electrolyte of projection b, the other end is communicated with inside casing, fluid branch flow channel one end connects the upper fluid passing hole as negative pole electrolyte outlet of projection b, and the other end is communicated with inside casing.
7. a kind of liquid stream battery stack according to claim 6, it is characterized in that, the part that described feed liquor branch flow channel and fluid branch flow channel enter after sheet frame forms by a long straight trough and comb shape groove, and wherein long straight trough is connected with fluid passing hole, and is communicated with inside casing by comb shape groove; Described long straight trough and comb shape groove top are embedded with cover plate.
8. a kind of liquid stream battery stack according to claim 7, it is characterized in that, the sheet frame of described positive plate is bonding or form by sealing ring pressing by the sheet frame b of sheet frame a and its adjacent single cells negative plate, in the interlayer of sheet frame a and sheet frame b, be provided with the drainage trough that is communicated with long straight trough and fluid passing hole, the sheet frame of negative plate is bonding or form by sealing ring pressing by the sheet frame d of sheet frame c and its adjacent single cells positive plate, is provided with the drainage trough that is communicated with long straight trough and fluid passing hole in the interlayer of sheet frame c and sheet frame d.
9. a kind of liquid stream battery stack according to claim 8, it is characterized in that, the sheet frame b positive and negative of the sheet frame a of described positive plate and negative plate is equipped with at least one seal groove, in seal groove, be provided with sealing ring, between described sheet frame a and sheet frame b, be pressed in respectively on same conductive plate, and seal by sealing ring; The sheet frame d positive and negative of the sheet frame c of described positive plate and negative plate is also equipped with at least one seal groove, is provided with sealing ring in seal groove, is pressed in respectively on same conductive plate, and seals by sealing ring between described sheet frame c and sheet frame d; In same monocell, between the negative plate that the positive plate that sheet frame a and sheet frame c form and sheet frame b and sheet frame d form, be pressed in respectively on same amberplex, by sealing ring, seal.
10. a kind of liquid stream battery stack according to claim 1, is characterized in that, described conductive plate comprises graphite cake, conductive plastic plate or metallic plate; 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.
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| CN104269561A (en) * | 2014-10-20 | 2015-01-07 | 中国东方电气集团有限公司 | Electrode and redox flow battery |
| 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 |
| CN104600340A (en) * | 2014-12-26 | 2015-05-06 | 上海电气集团股份有限公司 | Electrode frame structure of single batteries in redox flow battery as well as single battery and electric pile |
| CN104716375A (en) * | 2015-01-09 | 2015-06-17 | 马志啟 | Liquid flow battery pack having test function |
| TWI575805B (en) * | 2015-10-15 | 2017-03-21 | 行政院原子能委員會核能研究所 | Bipolar Plate of Flow Cell and Producing Method Thereof |
| WO2017176294A1 (en) | 2016-04-07 | 2017-10-12 | Lockheed Martin Advanced Energy Storage, Llc | High-throughput manufacturing processes for making electrochemical unit cells and electrochemical unit cells produced using the same |
| CN107710487A (en) * | 2015-06-23 | 2018-02-16 | 住友电气工业株式会社 | Bipolar plates, battery frame, battery pile and redox flow batteries |
| CN110268569A (en) * | 2017-02-10 | 2019-09-20 | Cmblu企划股份公司 | Flow through formula electrode unit and application thereof, redox flow battery system and application thereof, the method for formula electrode unit, the method for operating redox flow battery system are flowed through in manufacture |
| CN111584895A (en) * | 2020-05-25 | 2020-08-25 | 广州市香港科大霍英东研究院 | Oriented ordered electrode and preparation method and application thereof |
| CN112993360A (en) * | 2019-12-13 | 2021-06-18 | 中国科学院大连化学物理研究所 | Zinc-bromine single-flow galvanic pile and battery |
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| US11777128B1 (en) | 2022-05-09 | 2023-10-03 | Lockheed Martin Energy, Llc | Flow battery with a dynamic fluidic network |
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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 |
| CN104269561B (en) * | 2014-10-20 | 2017-02-01 | 中国东方电气集团有限公司 | Electrode and redox flow battery |
| CN104269561A (en) * | 2014-10-20 | 2015-01-07 | 中国东方电气集团有限公司 | Electrode and redox flow battery |
| CN104600340A (en) * | 2014-12-26 | 2015-05-06 | 上海电气集团股份有限公司 | Electrode frame structure of single batteries in redox flow battery as well as single battery and electric pile |
| CN104716375A (en) * | 2015-01-09 | 2015-06-17 | 马志啟 | Liquid flow battery pack having test function |
| CN107710487A (en) * | 2015-06-23 | 2018-02-16 | 住友电气工业株式会社 | Bipolar plates, battery frame, battery pile and redox flow batteries |
| TWI575805B (en) * | 2015-10-15 | 2017-03-21 | 行政院原子能委員會核能研究所 | Bipolar Plate of Flow Cell and Producing Method Thereof |
| US11165085B2 (en) | 2016-04-07 | 2021-11-02 | Lockheed Martin Energy, Llc | High-throughput manufacturing processes for making electrochemical unit cells and electrochemical unit cells produced using the same |
| WO2017176294A1 (en) | 2016-04-07 | 2017-10-12 | Lockheed Martin Advanced Energy Storage, Llc | High-throughput manufacturing processes for making electrochemical unit cells and electrochemical unit cells produced using the same |
| EP3443609A4 (en) * | 2016-04-07 | 2019-12-25 | Lockheed Martin Energy, LLC | High-throughput manufacturing processes for making electrochemical unit cells and electrochemical unit cells produced using the same |
| CN110268569A (en) * | 2017-02-10 | 2019-09-20 | Cmblu企划股份公司 | Flow through formula electrode unit and application thereof, redox flow battery system and application thereof, the method for formula electrode unit, the method for operating redox flow battery system are flowed through in manufacture |
| CN110268569B (en) * | 2017-02-10 | 2023-07-04 | CMBlu 能源股份公司 | Flow-through electrode unit and use thereof, redox flow battery system and use thereof, method for manufacturing flow-through electrode unit, method for operating redox flow battery system |
| CN112993360A (en) * | 2019-12-13 | 2021-06-18 | 中国科学院大连化学物理研究所 | Zinc-bromine single-flow galvanic pile and battery |
| CN112993360B (en) * | 2019-12-13 | 2022-04-19 | 中国科学院大连化学物理研究所 | Zinc-bromine single-flow galvanic pile and battery |
| CN111584895A (en) * | 2020-05-25 | 2020-08-25 | 广州市香港科大霍英东研究院 | Oriented ordered electrode and preparation method and application thereof |
| CN113171687A (en) * | 2021-05-12 | 2021-07-27 | 氢星(上海)生物科技有限公司 | Ion semi-permeable membrane component, electrolytic device and disinfectant manufacturing equipment |
| US11777128B1 (en) | 2022-05-09 | 2023-10-03 | Lockheed Martin Energy, Llc | Flow battery with a dynamic fluidic network |
| US11916272B2 (en) | 2022-05-09 | 2024-02-27 | Lockheed Martin Energy, Llc | Flow battery with a dynamic fluidic network |
| CN116230999A (en) * | 2023-04-26 | 2023-06-06 | 北京星辰新能科技有限公司 | Standard 40-ruler container type flow battery system |
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