CN104795577A - Bipolar plate frame structure for high-power flow cell stack - Google Patents
Bipolar plate frame structure for high-power flow cell stack Download PDFInfo
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- CN104795577A CN104795577A CN201410022422.9A CN201410022422A CN104795577A CN 104795577 A CN104795577 A CN 104795577A CN 201410022422 A CN201410022422 A CN 201410022422A CN 104795577 A CN104795577 A CN 104795577A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention relates to a bipolar plate frame structure for a high-power flow cell stack. The bipolar plate frame structure comprises a positive plate frame and a negative plate frame. A bipolar plate frame is provided with fluid inlet and outlet holes which comprise positive electrolyte inlet and outlet holes and negative electrolyte inlet and outlet holes. The bipolar plate frame comprises a plate frame and a cover plate. A conductive bipolar plate is arranged between the positive plate frame and the negative plate frame. Two ends of the plate frame are provided with drainage grooves. The cover plate covers the drainage grooves. The positive electrolyte inlet and outlet holes and the negative electrolyte inlet and outlet holes are configured in a multi-inlet and multi-outlet pattern. That is to say, number of positive electrolyte inlet holes, positive electrolyte outlet holes, negative electrolyte inlet holes and negative electrolyte outlet holes is all at least two. In comparison with the prior art, the bipolar plate frame structure provided by the invention will not self-discharge, is easy to seal and has the advantage of saving raw materials.
Description
Technical field
The present invention relates to a kind of technical field of new energies, especially relate to a kind of bipolar plates plate frame structure for large power redox flow cell heap.
Background technology
The renewable energy power generation such as wind energy, solar energy is utilized to be the topmost mode that the mankind utilize generation of electricity by new energy in the future.Because wind energy, solar power generation process affect by natural cause such as weather etc., have randomness, discontinuous feature, the electric energy being difficult to keep stable exports, and the apparatus for storing electrical energy of needs and certain scale matches, form complete electric power system, ensure continual and steady electric power supply.Therefore, develop high, that storage volume is large, economic performance the is good energy-storage system of electric energy conversion efficiency and become the key problem in technology utilizing generation of electricity by new energy.With various forms of energy storage technology, such as retaining energy-accumulating power station, high speed flywheel mechanical energy storage, superconducting energy storage etc. are compared, the features such as it is high that electrochemical energy storage has energy conversion efficiency, and mobility is strong, have unique advantage in all kinds of energy storage technology.In various electrochemical energy storage technology, flow battery system has Large Copacity electrical power storage and Efficient Conversion function, and long service life, environmental protection, safety feature, be easy to match with wind energy, solar power generation, significantly can reduce equipment manufacturing cost, for generation of electricity by new energy provides technique guarantee.For network system energy storage, be suitable for the uninterrupted power supply use of medium-scale industrial enterprise, hotel, government department, effectively can improve grid supply quality, complete " 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, the storage and release that realize electric energy is mutually transformed by the vanadium ion of different valence state, use v element of the same race to form battery system, avoid variety classes active material between positive and negative half-cell from principle and interpenetrate the cross pollution of generation.(Fig. 1) use dissolve in the electrolytic solution different valence state vanadium ion as anode and negative electrode active material, anode electrolyte and electrolyte liquid separately store, avoid battery storage process self-discharge phenomenon from principle, be suitable for the application of extensive thermal energy storage process.Anode electrolyte storage tank B and electrolyte liquid storage tank A is all-vanadium flow battery by magnetic drive pump D positive pole E and negative pole E provides electrolyte, and positive pole E and negative pole E ' is separated by amberplex G, for power source loads C powers.When the power of wind energy, device of solar generating exceedes rated output power, by the charging to flow battery, be that chemical energy is stored in the ion pair of different valence state by electric energy conversion; When Blast Furnace Top Gas Recovery Turbine Unit (TRT) can not meet rated output power, flow battery starts electric discharge, is electric energy the chemical energy stored, and ensures stable electrical power stage.Because flow battery is for the significance of the renewable energy power generation such as wind energy, solar energy process, obtain common concern at home and abroad as key technology.
All-vanadium flow battery charge/discharge running, will there is following redox reaction in electrode.
Positive pole reacts:
Negative reaction:
Because anode electrolyte and electrolyte liquid are in oxidizability valence state and reproducibility valence state respectively, it is no matter the charge/discharge running in pile inside, or electrolyte course of conveying, need to keep anode electrolyte and electrolyte liquid 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 pumps, and reservoir vessel easily realizes independently of one another, does not produce anode electrolyte and electrolyte liquid mixed problem.But electrolyte, at pile internal flow process and the flow process flowing through storage container, exists three kinds and causes positive pole, electrolyte liquid to mix or self-discharge phenomenon.1) through the mixing of amberplex: when amberplex is not good enough for vanadium ion barrier properties, cell charging/discharging running with hydrogen ions, vanadium ion generation transmembranal penetration; Can, by selecting suitable membrane material, improving vanadium ion/hydrogen ion selective, solving vanadium ion transmembranal penetration problem.2) through the mixing of pile hermetically-sealed construction: two kinds of electrolyte need simultaneously through same interface, and be assigned to electrode surface and carry out electrochemical reaction.Pile sealing will ensure that electrolyte can not leak into pile outside, guarantees that pile inside does not go here and there liquid to each other again, 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 to crimp barrier film and hermetic electrolyte liquid mode simultaneously, carries out pile sealing, obtains certain effect.But, this electric pile structure sealing means depends critically upon battery sheet frame machining accuracy and seal member material properties, often because of factors such as variations in temperature, amberplex change in size in Long-Time Service process, cause two kinds of electrolyte to leak from sealing position, produce mixed self discharge problem.3) there is it during monocell each by electrolyte supply and import and export total pipeline with electrolyte, 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 the inner three kinds of electrolyte of the pile solving existing flow battery are from sealing position leakage, crossover leaks and being reduced by electrolyte self-discharge problem, avoid electrolyte to hand over justice to pollute, be reduced by electrolyte self-discharge, raising coulombic efficiency.Patent application 200910078434.2 discloses a kind of flow battery, its positive and negative liquid stream sheet frame and inside casing thereof are square or rectangle, positive and negative one jiao, liquid flow frame plate bottom arranges inlet opening, another angle arranges liquid pass hole, one jiao, top sets out fluid apertures, 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 evenly coil serpentine runner 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, thus the electrolyte that has been multiplied enters, the resistance of fluid branch flow channel, thus flow battery self-discharge current is reduced at double, substantially increase the energy efficiency of flow battery.
But this scheme, the public dispensing orifice of turnover fluid is all arranged on deckle board, and public dispensing orifice will be quadratured larger, deckle board area is caused to increase, and the electrolyte that flows out of public dispensing orifice non-immediate enters electrode, but imported by Z-type liquid in-out branch flow channel, Z-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 Z-type liquid in-out branch flow channel is more difficult, seal to make Z-type fluid passage, be provided with cover plate and cover Z-type fluid passage, but be still difficult to sealing, especially battery operation is worked as, when temperature raises, owing to expanding with heat and contract with cold, seal more difficult, the channelling of easy generation electrolyte, cause self discharge, in addition, Z-type fluid passage limited flow, flow resistance is handed over large, add the power consumption of the electrolyte delivery pump of whole flow battery system, thus reduce system effectiveness.
Summary of the invention
Object of the present invention is exactly provide one can greatly reduce by leakage self discharge to overcome defect that above-mentioned prior art exists, the bipolar plates plate frame structure for large power redox flow cell heap of easily sealing.
Object of the present invention can be achieved through the following technical solutions: a kind of bipolar plates plate frame structure for large power redox flow cell heap, comprise positive pole sheet frame and negative pole sheet frame, bipolar plates plate frame structure is provided with fluid passing hole, described fluid inlet and outlet comprises anode electrolyte manhole appendix and electrolyte liquid is imported and exported, described bipolar plates sheet frame comprises sheet frame and cover plate, conductive bipolar plate is placed in the middle of positive pole sheet frame and negative pole sheet frame two boards frame, the two ends of sheet frame are provided with drainage trough, drainage trough upper cover establishes cover plate, it is characterized in that, described anode electrolyte manhole appendix and electrolyte liquid are imported and exported as to enter to have more setting more, i.e. anode electrolyte inlet hole, anode electrolyte portals, electrolyte liquid inlet hole and electrolyte liquid portal and are all at least provided with 2.
Described bipolar plates sheet frame is made up of positive pole sheet frame and negative pole sheet frame, places conductive bipolar plate, the equal placing graphite felt in conductive bipolar plate both sides in the middle of two pieces of sheet frames, and the thickness of graphite felt is for concordant with sheet frame after the compression of dress heap; Described positive pole sheet frame and negative pole sheet frame are symmetrical arranged, and namely positive pole sheet frame becomes negative pole sheet frame after rotating 180 degree.
Described positive pole sheet frame and the obverse and reverse of negative pole sheet frame are equipped with a peripheral seal groove, this peripheral seal groove is arranged on sheet frame edge, and in the fluid passing hole on bipolar plates sheet frame and drainage trough are all enclosed in, and wherein the seal groove of all fluid passing hole peripheries is together in series by the peripheral seal groove of reverse side respectively, with an all fluid passing hole of integral sealing ring fitted seal and peripheral part, arrive the object of final sealing anti-leak.
Described anode electrolyte inlet hole is provided with 2 ~ 5, and anode electrolyte portals and is provided with 2 ~ 5, and electrolyte liquid inlet hole is provided with 2 ~ 5, and electrolyte liquid portals and is provided with 2 ~ 5.
Described electrolyte drainage trough is looped around each fluid passing hole periphery, namely draws drainage trough from each fluid passing hole and forms annular flow path around fluid passing hole, and the number of turns of annular flow path is 1 ~ 10 circle.
Guide and flow out from the public manhole appendix of electrolyte flow, the drainage trough that the electrolyte flowed into enters conversion zone or outflow conversion zone is made up of two parts: annular flow path, split into many direct current grooves be evenly distributed to by electrolyte in effecting reaction region again, described annular flow path is communicated with the direct current groove of many uniform distribution electrolyte of sheet frame nearly comfort zone side, the liquid flowed out from electrolyte flow manhole appendix flow to direct current groove through annular flow path, the membrane electrode that the inside casing entering sheet frame is again arranged reacts, flow out conversion zone after reaction to import direct current groove and flow out again and get back to annular flow path and enter Fluid-exiting apertures.
The boss ridge limit that the electrolyte that guiding is flowed out from the public manhole appendix of electrolyte flow, flow into enters the drainage trough both sides of conversion zone or outflow conversion zone is provided with groove, described cover plate is provided with the raised line with described groove match, when cover plate covers on sheet frame, raised line on cover plate inserts in corresponding groove, and cover plate and sheet frame are tightly connected; Or arrange on the contrary: be namely provided with raised line on ridge limit, and cover plate corresponding thereto arranges groove, when cover plate covers on sheet frame, the raised line on sheet frame is come in and gone out in groove corresponding on cover plate, makes cover plate and sheet frame be tightly connected.
Be provided with sealing ring in groove on sheet frame or cover plate or have bonding glue, described raised line inserts in groove, is bonded and sealed by sealing ring or glue.
The periphery of described conductive bipolar plate is enclosed with insulating elastomer, and insulating elastomer is the reeded annular insulating rubber material of band, and described groove is fastened on conductive bipolar plate peripheral end surface.
Positive pole sheet frame and negative pole sheet frame compress the insulating elastomer corresponding position that the marginal position of bipolar plates and bipolar plates periphery wrap up and are provided with groove, and the groove on adjacent sheet frame is symmetrical arranged, and is stuck in wherein by annular insulating elastomer; Described insulating elastomer is a kind of elastomeric material or plastics of acidproof, oxide etch.
Compared with prior art, the present invention has the following advantages:
1. the design of the fluid passing hole entering to have more more make fluid dispersion to conversion zone evenly, reduce fluid resistance;
2. the tongue and groove matched is set on the drainage trough and cover plate at bipolar plates two ends and carries out clamping, both fast demountable, reach security seal again, efficiency is high, and and be provided with in groove sealing ring or bonding glue, can not there is crossfire in the fluid in each drainage trough, not easy to leak, reduces the possibility of self discharge;
3. the end face of the whole periphery of conductive bipolar plate is arranged annular electro-insulating rubber parcel, and at positive and negative electrode sheet frame, groove is set with the marginal position compressing bipolar plates annular insulating cement screens is sealed, substantially increase sealing property.
Accompanying drawing explanation
Fig. 1 is all-vanadium flow battery schematic diagram;
Fig. 2 is sheet frame front schematic view;
Fig. 3 is sheet frame reverse side schematic diagram;
Fig. 4 is cover plate front schematic view;
Fig. 5 is cover plate reverse side schematic diagram;
Fig. 6 is conductive bipolar plate and sheet frame and sealing ring connected component structural representation;
Fig. 7 is the structural representation of monocell
Fig. 8 is the structural representation of fuel cell pack.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As Fig. 2-3, shown in 7, a kind of bipolar plates plate frame structure for high-power MW class liquid stream battery stack, comprise positive pole sheet frame, negative pole sheet frame, be of a size of 800mm × 1000mm × 7mm, this bipolar plates sheet frame is provided with fluid passing hole, described fluid inlet and outlet comprises anode electrolyte manhole appendix and electrolyte liquid is imported and exported, described bipolar plates sheet frame is made up of positive pole sheet frame and negative pole sheet frame, two pieces of sheet frames include sheet frame 2 and cover plate 1, conductive bipolar plate 5 is placed in the middle of two pieces of sheet frames, carbon felt 4 is all placed in conductive bipolar plate 5 both sides, the thickness of carbon felt 4 is for concordant with sheet frame after the compression of dress heap, described positive pole sheet frame and negative pole sheet frame are symmetrical arranged, and bipolar plates and carbon felt 4 and membrane electrode 3 form monocell.As shown in Figure 8, described bipolar plates and membrane electrode composition monocell, multiple monocell superposition composition pile, pile two ends are provided with end plate 10, and end plate is provided with fastener hole, and pile is fixed through the fastener hole on the end plate of two ends by screw rod 101.Fluid passing hole superposition in each bipolar plates forms the public manhole appendix of electrolyte flow.Guide flow out from the public manhole appendix of electrolyte flow, drainage trough that the electrolyte that flows into enters conversion zone or flows out conversion zone is made up of two parts: annular flow path 22, then splits into many direct current grooves 23 be evenly distributed to by electrolyte in effecting reaction region.
Described positive pole sheet frame and the obverse and reverse of negative pole sheet frame are equipped with a peripheral seal groove, this peripheral seal groove is arranged on sheet frame edge, and in the fluid passing hole on bipolar plates sheet frame and drainage trough are all enclosed in, and wherein the seal groove of all fluid passing hole peripheries is together in series by the peripheral seal groove of reverse side respectively, with an all fluid passing hole of integral sealing ring fitted seal and peripheral part, arrive the object of final sealing anti-leak.
Described annular flow path 22 is looped around each fluid passing hole 21 periphery, namely draws drainage trough from each fluid passing hole 21 and forms annular flow path around fluid passing hole, and the number of turns of annular flow path is 1 ~ 10 circle.Described annular flow path is communicated with the direct current groove 23 of sheet frame inside casing front side edge, and the liquid flowed out from fluid inlet hole flow to direct current groove through annular flow path, and the membrane electrode arranged before the inside casing entering sheet frame reacts.
The drainage trough upper cover that the two ends of sheet frame 2 are arranged establishes cover plate, described anode electrolyte manhole appendix and electrolyte liquid are imported and exported as to enter to have more setting more, and namely anode electrolyte inlet hole, anode electrolyte portal, electrolyte liquid inlet hole and electrolyte liquid portals and be equipped with 2.
Article two, the boss ridge limit between drainage trough is provided with groove 24, described cover plate is provided with the raised line 11 with described groove match, when cover plate covers on sheet frame, the raised line 11 on cover plate inserts in corresponding groove 24, and cover plate 1 and sheet frame 2 are tightly connected (as illustrated in figures 4-5).Be provided with sealing ring in described groove 24, described raised line 11 inserts in groove 24, is sealed by sealing ring.
As shown in Figure 6, the whole peripheral end surface of described conductive bipolar plate 5 is enclosed with electro-insulating rubber 6, insulating cement 6 is the reeded annular insulating cement of band, monoblock bipolar plates periphery snare is got up, the described conductive bipolar plate 5 peripheral sealing part entire card with sealing rubber cover enters to be located in the groove on both positive and negative polarity bipolar plates sheet frame 2, electro-insulating rubber corresponding position good with snare on described sheet frame 2 is provided with groove 25, and the groove 25 on adjacent sheet frame is symmetrical arranged, and is stuck in wherein by annular electro-insulating rubber.Electro-insulating rubber is elastomer, and is elastomeric material or the plastics of acidproof, oxide etch.
Embodiment 2
The ridge limit of described sheet frame is provided with raised line, and cover plate corresponding thereto arranges groove, and when cover plate covers on sheet frame, the raised line on sheet frame is come in and gone out in groove corresponding on cover plate, and cover plate and sheet frame are tightly connected.
Described anode electrolyte inlet hole also can arrange more than 2, and as 3,4 or 5, anode electrolyte portals, electrolyte liquid inlet hole is provided with to portal with electrolyte liquid and also can arranges 3,4 or 5.All the other are with embodiment 1.
Claims (10)
1. the bipolar plates plate frame structure for large power redox flow cell heap, comprise positive pole sheet frame and negative pole sheet frame, bipolar plates plate frame structure is provided with fluid passing hole, described fluid inlet and outlet comprises anode electrolyte manhole appendix and electrolyte liquid is imported and exported, described bipolar plates sheet frame comprises sheet frame and cover plate, conductive bipolar plate is placed in the middle of positive pole sheet frame and negative pole sheet frame two boards frame, the two ends of sheet frame are provided with drainage trough, drainage trough upper cover establishes cover plate, it is characterized in that, described anode electrolyte manhole appendix and electrolyte liquid are imported and exported as to enter to have more setting more, i.e. anode electrolyte inlet hole, anode electrolyte portals, electrolyte liquid inlet hole and electrolyte liquid portal and are all at least provided with 2.
2. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 1, it is characterized in that, described bipolar plates sheet frame is made up of positive pole sheet frame and negative pole sheet frame, conductive bipolar plate is placed in the middle of two pieces of sheet frames, the equal placing graphite felt in conductive bipolar plate both sides, the thickness of graphite felt is for concordant with sheet frame after the compression of dress heap; Described positive pole sheet frame and negative pole sheet frame are symmetrical arranged, and namely positive pole sheet frame becomes negative pole sheet frame after rotating 180 degree.
3. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 1, it is characterized in that, described positive pole sheet frame and the obverse and reverse of negative pole sheet frame are equipped with a peripheral seal groove, this peripheral seal groove is arranged on sheet frame edge, and in the fluid passing hole on bipolar plates sheet frame and drainage trough are all enclosed in, and wherein the seal groove of all fluid passing hole peripheries is together in series by the peripheral seal groove of reverse side respectively, with an all fluid passing hole of integral sealing ring fitted seal and peripheral part, arrive the object of final sealing anti-leak.
4. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 1, it is characterized in that, described anode electrolyte inlet hole is provided with 2 ~ 5, anode electrolyte portals and is provided with 2 ~ 5, electrolyte liquid inlet hole is provided with 2 ~ 5, and electrolyte liquid portals and is provided with 2 ~ 5.
5. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 1, it is characterized in that, described electrolyte drainage trough is looped around each fluid passing hole periphery, namely draw drainage trough from each fluid passing hole and form annular flow path around fluid passing hole, the number of turns of annular flow path is 1 ~ 10 circle.
6. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 5, it is characterized in that, guide and flow out from the public manhole appendix of electrolyte flow, the drainage trough that the electrolyte flowed into enters conversion zone or outflow conversion zone is made up of two parts: annular flow path, split into many direct current grooves be evenly distributed to by electrolyte in effecting reaction region again, described annular flow path is communicated with the direct current groove of many uniform distribution electrolyte of sheet frame nearly comfort zone side, the liquid flowed out from electrolyte flow manhole appendix flow to direct current groove through annular flow path, the membrane electrode that the inside casing entering sheet frame is again arranged reacts, flow out conversion zone after reaction to import direct current groove and flow out again and get back to annular flow path and enter Fluid-exiting apertures.
7. according to claim 1 or 5 a kind of for large power redox flow cell heap bipolar plates plate frame structure, it is characterized in that, the boss ridge limit that the electrolyte that guiding is flowed out from the public manhole appendix of electrolyte flow, flow into enters the drainage trough both sides of conversion zone or outflow conversion zone is provided with groove, described cover plate is provided with the raised line with described groove match, when cover plate covers on sheet frame, raised line on cover plate inserts in corresponding groove, and cover plate and sheet frame are tightly connected; Or arrange on the contrary: be namely provided with raised line on ridge limit, and cover plate corresponding thereto arranges groove, when cover plate covers on sheet frame, the raised line on sheet frame is come in and gone out in groove corresponding on cover plate, makes cover plate and sheet frame be tightly connected.
8. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 7, it is characterized in that, be provided with sealing ring in groove on sheet frame or cover plate or have bonding glue, described raised line inserts in groove, is bonded and sealed by sealing ring or glue.
9. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 1, it is characterized in that, the periphery of described conductive bipolar plate is enclosed with insulating elastomer, insulating elastomer is the reeded annular insulating rubber material of band, and described groove is fastened on conductive bipolar plate peripheral end surface.
10. a kind of bipolar plates plate frame structure for large power redox flow cell heap according to claim 9, it is characterized in that, positive pole sheet frame and negative pole sheet frame compress the insulating elastomer corresponding position that the marginal position of bipolar plates and bipolar plates periphery wrap up and are provided with groove, groove on adjacent sheet frame is symmetrical arranged, and is stuck in wherein by annular insulating elastomer; Described insulating elastomer is a kind of elastomeric material or plastics of acidproof, oxide etch.
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| CN109075359B (en) * | 2016-04-07 | 2021-10-19 | 洛克希德马丁能源有限责任公司 | High-throughput manufacturing process for making electrochemical cell and electrochemical cell produced using the same |
| 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 |
| CN109716570A (en) * | 2016-08-05 | 2019-05-03 | 昭和电工株式会社 | Redox flow batteries |
| CN110048141A (en) * | 2019-04-22 | 2019-07-23 | 高岩 | A kind of electrode of liquid flow cell sheet frame runner and flow battery runner |
| CN110323466A (en) * | 2019-07-09 | 2019-10-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of new fuel cell graphite bi-polar plate structure |
| CN112151827A (en) * | 2019-11-25 | 2020-12-29 | 国家电投集团科学技术研究院有限公司 | Battery unit of flow battery and flow battery with same |
| 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 |
| CN112909280A (en) * | 2020-12-31 | 2021-06-04 | 大连融科储能技术发展有限公司 | Method for insulating surface edge of bipolar plate and application thereof |
| CN112909280B (en) * | 2020-12-31 | 2022-02-11 | 大连融科储能技术发展有限公司 | Method for insulating surface edge of bipolar plate and application thereof |
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