CN107871883A - A kind of redox flow batteries and its application - Google Patents
A kind of redox flow batteries and its application Download PDFInfo
- Publication number
- CN107871883A CN107871883A CN201610861856.7A CN201610861856A CN107871883A CN 107871883 A CN107871883 A CN 107871883A CN 201610861856 A CN201610861856 A CN 201610861856A CN 107871883 A CN107871883 A CN 107871883A
- Authority
- CN
- China
- Prior art keywords
- storage tank
- electrolyte
- conduit
- redox flow
- flow batteries
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04186—Arrangements for control of reactant parameters, e.g. pressure or concentration of liquid-charged or electrolyte-charged reactants
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention relates to a kind of redox flow batteries, it includes positive pole circulating pump, positive pole pipeline, negative pole circulating pump, negative pole pipeline, anolyte liquid storage tank and cathode electrolyte storage tank, and wherein anolyte liquid storage tank and cathode electrolyte storage tank is positioned in same level.Electrolyte is full of by both ends open, inside between anolyte liquid storage tank and cathode electrolyte storage tank, equivalent diameter footpath is between 0.1mm~8mm, conduit of the number not less than 1 is connected, respectively under anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank, some in conduit is on anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank at the both ends of conduit.Conduit full of electrolyte forms syphon structure between anolyte liquid storage tank and cathode electrolyte storage tank, keeps the electrolyte in positive and negative electrode electrolyte storage tank constantly to connect.The liquid flow energy storage battery of the present invention can effectively delay unbalance, the suppression capacity attenuation of the both positive and negative polarity both sides electrolyte caused by the migration of ion and water.
Description
Technical field
The present invention relates to a kind of redox flow batteries, further relate to a kind of method for delaying battery capacity to decay.
Background technology
The energy is the important foundation of national economy sustainable development and national security, and electric power is as the convenient secondary energy of cleaning
Source utilizes form, and with expanding economy, demand increasingly increases.Environmental pressure day caused by a large amount of consumption of fossil energy
Benefit is prominent, and research and development, using regenerative resources such as wind energy, solar energy, realize energy-saving and emission-reduction and energy variation with extensive
As countries in the world energy security and the grand strategy of sustainable development.The renewable energy systems such as wind energy, solar energy have
There is discontinuous, unstable unstable state feature, extensive high-efficiency energy-storage technology is the key technology for solving this problem.Liquid stream is stored up
Energy battery is a kind of extensive high-efficiency electrochemical energy storage device, has energy conversion efficiency high compared to other energy storage technologies, stores
Capacitance is big, and system design is flexible, and reliability is high, can deep discharge, and operation and maintenance cost is low and advantages of environment protection.
Especially its capacity and power can independent design the characteristics of, be especially suitable for developing extensive energy storage, sent out in wind-power electricity generation, photovoltaic
Before there is good application in the fields such as electricity, peak load regulation network, distribution power station, military electric power storage, municipal traffic, communication base station, ups power
Scape.
Electrochemical energy storage technology of the vanadium redox battery as most some commercial potential, it uses ion to hand over
Change film to separate positive pole and negative pole, by positive pole and the circulation line of each self-closing of negative pole, with circulating pump so that electrolyte storage tank
In electrolyte flow into battery in electrode surface, utilize the phase between the metal vanadium ion of different valence state in both positive and negative polarity electrolyte
Mutually conversion, electric energy is converted into by chemical energy.But in battery actual moving process, because the respective ion of both positive and negative polarity and water can
To be migrated by amberplex, cause the ion concentration of the two poles of the earth electrolyte and volume uneven, in turn result in battery appearance
Amount decay, efficiency decline.
The methods that US6764789 provides two kinds of alleviation battery capacity decay are electrolyte batch method respectively and are overflow
Stream method；Redox flow batteries and make method (application number of the battery long lasting for operation：200910210176.9) propose
By both positive and negative polarity liquid level of electrolyte in the method for lower part pipeline connection.Wherein batch processing method needs to follow battery operation is multiple
After ring, additional electric energy (such as pump) extracts the electrolyte of the pole more than electrolyte volume out, and is transferred to another pole electrolyte storage tank
In, the complexity and later maintenance expense of system are added, reduces system effectiveness；And both of which is using connection in addition
The principle of device, the electrolyte in the electrolyte storage tank of the two poles of the earth is set to realize releveling using gravity.
The content of the invention
It is an object of the invention to delay unbalance, the suppression of the both positive and negative polarity both sides electrolyte caused by the migration of ion and water
Capacity attenuation.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of redox flow batteries, it includes positive pole circulating pump, positive pole pipeline, negative pole circulating pump, negative pole pipeline, dress
Be filled with the anolyte liquid storage tank of electrolyte and be filled with the cathode electrolyte storage tank of electrolyte, the anolyte liquid storage tank and
It is connected between cathode electrolyte storage tank by both ends open, the internal conduit full of electrolyte, the both ends of conduit are located at respectively
Under anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank, some in conduit is in anode electrolyte storage
On tank and the liquid level of electrolyte of cathode electrolyte storage tank.Conduit and anolyte liquid storage tank and electrolyte full of electrolyte
Syphon structure is formed between liquid storage tank, keeps the electrolyte in positive and negative electrode electrolyte storage tank constantly to connect.
The equivalent diameter of conduit is 0.1mm-8mm in described redox flow batteries, and wherein equivalent diameter is defined as 4
The area of flow section again and flow section upper fluid and the ratio of the girth of solid contact.
The number of the conduit is 1 or more than 2.
The conduit is on the wall of the upper part of anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank
Liquid injection hole is offered, and valve is housed at liquid injection hole.
The anolyte liquid storage tank of the redox flow batteries through positive pole circulating pump by positive pole pipeline and battery just
Pole entrance connection, anode outlet connection are connected through positive pole pipeline with anolyte liquid storage tank；Cathode electrolyte storage tank passes through
Negative pole circulating pump is connected by negative pole pipeline with GND entrance, and GND outlet connection is through negative pole pipeline and electrolyte
Liquid storage tank is connected.
Above-mentioned redox flow batteries are vanadium redox batteries.
Above-mentioned redox flow batteries, it can delay redox flow batteries capacity attenuation in the application.
Embodiment
A kind of redox flow batteries provided by the present invention, it includes positive pole circulating pump, positive pole pipeline, negative pole circulation
Pump, negative pole pipeline, anolyte liquid storage tank and cathode electrolyte storage tank, wherein anolyte liquid storage tank and cathode electrolyte storage tank
It is positioned in same level.It is fully charged by both ends open, inside between anolyte liquid storage tank and cathode electrolyte storage tank
Liquid is solved, between 0.1mm~8mm, conduit of the number not less than 1 is connected equivalent diameter, and the both ends of conduit are respectively positioned at just
Under the liquid level of electrolyte of pole electrolyte storage tank and cathode electrolyte storage tank, some in conduit is in anolyte liquid storage tank
On the liquid level of electrolyte of cathode electrolyte storage tank.
In the preference of the present invention, conduit is located at anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank
More than, and also can spatially tilt certain angle with horizontal positioned.In view of the sealing of electrolyte storage tank, conduit can
To be stretched out from the upper wall of electrolyte storage tank, can also be stretched out from the side wall of electrolyte storage tank；Connection between conduit and tank wall
Mode does not also limit, and is defined by not electrolyte leakage, can be flange connection, can also use glue sticking.In a word, can defer to
At that time, local environment and execution conditions selected appropriate connected mode.
The present invention is made it using the electrolyte in siphon principle connection anolyte liquid storage tank and cathode electrolyte storage tank
The process of balance is automatically performed, can keep liquid level almost identical for a long time.After multiple charge and discharge cycles, both sides active matter
Matter can migrate in amberplex both sides, cause concentration difference.The concentration difference turns into the power of Ion transfer in conduit, concentration
High side ion migrates to the low side of concentration, so as to ensure that the balance of active material in positive and negative electrode electrolyte.
Conduit should select the material of electrolyte resistance corrosion to be made, and be not limited to hard material, be preferably able to electrolyte resistance corruption
The high polymer material of erosion, such as polyvinyl chloride, polypropylene, polyethylene, polytetrafluoroethylene (PTFE), Kynoar, chlorinated polypropylene, chlorination
Polyethylene, polyvinylidene fluoride, polyester, makrolon, polyalcohols, polysulfones, polyether sulfone, polyethers, polyamide, polyimides, polyphenyl
Thioether, polyether-ketone, polyether-ether-ketone, pound in naphthalene biphenyl polyether ketone, polybenzimidazoles, polystyrene, polyisobutene, polyacrylonitrile
One or more combinations of materials are made.
The present invention also provides a kind of method for delaying redox flow batteries capacity attenuation, the redox in this method
Battery includes positive pole circulating pump, positive pole pipeline, negative pole circulating pump, negative pole pipeline, anolyte liquid storage tank and the storage of electrolyte liquid
Tank, wherein anolyte liquid storage tank and cathode electrolyte storage tank are positioned in same level.Anolyte liquid storage tank and negative pole
Electrolyte is full of by both ends open, inside between electrolyte storage tank, between 0.1mm~8mm, number is not less than equivalent diameter
The conduit of 1 is connected, and the both ends of conduit are respectively positioned at anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank
Under, some in conduit is on anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank.
In the preference of this method, conduit is located at anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank
More than, and also can spatially tilt certain angle with horizontal positioned.In view of the sealing of electrolyte storage tank, conduit can
To be stretched out from the upper wall of electrolyte storage tank, can also be stretched out from the side wall of electrolyte storage tank；Connection between conduit and tank wall
Mode does not also limit, and is defined by not electrolyte leakage, can be flange connection, can also use glue sticking.In a word, can defer to
At that time, local environment and execution conditions selected appropriate connected mode.
The method for delaying redox flow batteries capacity attenuation is using siphon principle connection anolyte liquid storage tank
With the electrolyte in cathode electrolyte storage tank, make it to be automatically performed the process of balance, liquid level can be kept for a long time almost
It is identical.After multiple charge and discharge cycles, both sides active material can migrate in amberplex both sides, cause concentration difference.Should
Concentration difference turns into the power of Ion transfer in conduit, and the high side ion of concentration migrates to the low side of concentration, so as to ensure that
The balance of active material in positive and negative electrode electrolyte.
Conduit in this method should select the material of electrolyte resistance corrosion to be made, and be not limited to hard material, be preferably able to
The high polymer material of electrolyte resistance corrosion, such as polyvinyl chloride, polypropylene, polyethylene, polytetrafluoroethylene (PTFE), Kynoar, chlorination
It is polypropylene, haloflex, polyvinylidene fluoride, polyester, makrolon, polyalcohols, polysulfones, polyether sulfone, polyethers, polyamide, poly-
Acid imide, polyphenylene sulfide, polyether-ketone, polyether-ether-ketone, pound naphthalene biphenyl polyether ketone, polybenzimidazoles, polystyrene, polyisobutene,
One or more combinations of materials in polyacrylonitrile are made.
Embodiment
By taking redox flow batteries proposed by the present invention as an example, battery and side that the detailed description present invention introduces
Method, it is assembled redox flow batteries by 10 section monocells, and circuit connection is carried out using bipolar plates between every batteries,
Electrode area 875cm 2, with non-fluorine ion exchange membrane, electrolyte vanadium ion concentration is 1.5mol/L, charging and discharging currents density
80mA/cm2, charge cutoff voltage and discharge cut-off voltage are respectively 15.5V and 10V, electrolyte volume 30L, initial electrolysis liquid
Liquid level is equal, catheter diameter 3mm, length 150cm.
Claims (7)
1. a kind of redox flow batteries, it includes positive pole circulating pump, positive pole pipeline, negative pole circulating pump, negative pole pipeline, filling
There is the anolyte liquid storage tank of electrolyte and be filled with the cathode electrolyte storage tank of electrolyte, it is characterised in that：The positive pole electricity
It is connected between solution liquid storage tank and cathode electrolyte storage tank by both ends open, the internal conduit full of electrolyte, the two of conduit
Respectively under anolyte liquid storage tank and the liquid level of electrolyte of cathode electrolyte storage tank, some in conduit is in just at end
On the liquid level of electrolyte of pole electrolyte storage tank and cathode electrolyte storage tank；Conduit and anolyte liquid storage tank full of electrolyte
Syphon structure is formed between cathode electrolyte storage tank, keeps the electrolyte in positive and negative electrode electrolyte storage tank constantly to connect.
2. redox flow batteries according to claim 1, it is characterised in that：The equivalent diameter of the conduit is
0.1mm-8mm, wherein equivalent diameter are defined as the week of the area and flow section upper fluid and solid contact of 4 times of flow section
Long ratio.
3. redox flow batteries according to claim 1, it is characterised in that：The number of the conduit is 1 or 2
More than.
4. redox flow batteries according to claim 1, it is characterised in that：The conduit is in anode electrolyte storage
Liquid injection hole is offered on the wall of the upper part of tank and the liquid level of electrolyte of cathode electrolyte storage tank, and valve is housed at liquid injection hole
Door.
5. redox flow batteries according to claim 1, it is characterised in that：Anolyte liquid storage tank leads to through positive pole circulating pump
Cross positive pole pipeline to be connected with anode entrance, anode outlet connection is connected through positive pole pipeline with anolyte liquid storage tank
Connect；Cathode electrolyte storage tank is connected through negative pole circulating pump by negative pole pipeline with GND entrance, GND outlet connection
It is connected through negative pole pipeline with cathode electrolyte storage tank.
6. redox flow batteries according to claim 1, it is characterised in that：Described redox flow batteries are full vanadium
Redox flow batteries.
7. the application of any redox flow batteries in a kind of claim 1-6, it can delay oxidation also in the application
Stoste galvanic battery capacity attenuation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861856.7A CN107871883A (en) | 2016-09-28 | 2016-09-28 | A kind of redox flow batteries and its application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861856.7A CN107871883A (en) | 2016-09-28 | 2016-09-28 | A kind of redox flow batteries and its application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107871883A true CN107871883A (en) | 2018-04-03 |
Family
ID=61762037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610861856.7A Pending CN107871883A (en) | 2016-09-28 | 2016-09-28 | A kind of redox flow batteries and its application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107871883A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490279A (en) * | 2020-04-23 | 2020-08-04 | 贵州聚能世纪科技有限责任公司 | Method for solving capacity attenuation of vanadium battery |
-
2016
- 2016-09-28 CN CN201610861856.7A patent/CN107871883A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490279A (en) * | 2020-04-23 | 2020-08-04 | 贵州聚能世纪科技有限责任公司 | Method for solving capacity attenuation of vanadium battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102055000B (en) | Redox flow battery and method for enabling battery to operate continuously for long time | |
| Tokuda et al. | Development of a redox flow battery system | |
| CN103137986B (en) | A kind of zinc bromine single flow battery | |
| CN101847724B (en) | Bipolar plate frame and galvanic pile of flow battery | |
| CN104143650A (en) | Redox flow cell and its application | |
| CN104716374B (en) | Neutral zinc iron double fluid flow battery | |
| CN103579658B (en) | A kind of liquid stream battery stack | |
| CN207587857U (en) | A kind of zinc-nickel single flow battery | |
| CN206022527U (en) | A kind of solution valence state bascule of all-vanadium flow battery | |
| CN202153549U (en) | Zinc-bromine flow battery and battery pack | |
| CN105742656A (en) | Zinc-iodine flow battery | |
| CN107305951A (en) | A kind of zinc-bromine flow battery | |
| CN206022528U (en) | A kind of zinc bromine single flow battery structure | |
| CN104143646A (en) | Flow energy storage cell or pile running method | |
| CN105680082A (en) | Long-lifetime zinc-bromine flow battery structure and electrolyte | |
| CN109755604A (en) | A kind of neutrality zinc iodine solution galvanic battery | |
| CN102723518A (en) | All-lead liquid flow battery | |
| CN103762375A (en) | Polyfluortetraethylene sandwich layer protective ion exchange membrane, preparation method of membrane and liquid flow battery | |
| CN105280964A (en) | Zinc-manganese flow battery | |
| EP2869383B1 (en) | Large-capacity power storage device | |
| KR20170142753A (en) | Method for a renewable energy storage and manufacturing the utilization equipment of mixed redox flow batteries | |
| CN106549178A (en) | A kind of organic flow battery | |
| CN106876764A (en) | A kind of redox flow batteries and its application | |
| CN102820476B (en) | The application of a kind of proton exchange membrane in iron-chromium system liquid phase fluid battery | |
| CN107871883A (en) | A kind of redox flow batteries and its application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180403 |
|
| WD01 | Invention patent application deemed withdrawn after publication |