CN109378511A - Energy storing and electricity generating method based on salt cave - Google Patents
Energy storing and electricity generating method based on salt cave Download PDFInfo
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- CN109378511A CN109378511A CN201811250793.7A CN201811250793A CN109378511A CN 109378511 A CN109378511 A CN 109378511A CN 201811250793 A CN201811250793 A CN 201811250793A CN 109378511 A CN109378511 A CN 109378511A
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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 discloses a kind of energy storing and electricity generating methods of energy-storage generating apparatus based on salt cave, the following steps are included: energy storage stage, by external electric power, electrolyte charging complete in liquid stream battery stack, feed liquid pipeline and back liquid pipeline are opened, circulating pump is started, the electrolyte in liquid stream battery stack is molten intracavitary by injecting, it displaces molten intracavitary equivalent electrolyte and is delivered in liquid stream battery stack and charge again, repeat above procedure and continue energy storage；Power generating stage, electrolyte in liquid stream battery stack first generates electricity to being nearly completed, and by the dump power of liquid stream battery stack, starts circulating pump, electrolyte injection in liquid stream battery stack is molten intracavitary, it displaces molten intracavitary equivalent electrolyte and enters in liquid stream battery stack and discharge again.The energy storing and electricity generating method based on salt cave can effectively carry out charge and discharge, not only have many advantages, such as that security performance is high, charge-discharge performance is stable, additionally it is possible to solve extensive electrochemical energy storage, make full use of some discarded salt cave resources.
Description
Technical field
The invention belongs to energy storage redox flow batteries fields, and in particular to a kind of energy storing and electricity generating side based on salt cave
Method.
Background technique
With human economy fast development, the problems such as environmental pollution and energy shortage, increasingly sharpens, and promotes countries in the world wide
The renewable energy such as general development and utilization wind energy, solar energy, tide energy.However these renewable energy have it is discontinuous, unstable,
It is limited and the characteristic of grid-connected hardly possible by territorial environment, causes its utilization rate low, light rate height, waste of resource are abandoned in abandonment.Therefore it needs big
Power development can efficient, cheap, safe and reliable energy storage technology used in conjunction with.
In various electrochemical energy storage strategies, relative to static battery such as lithium ion battery and lead-acid battery, liquid stream electricity
(Redox Flow Batteries, RFBs) has several special technological merits in pond, is most suitable for extensive (megawatt/megawatt hour)
Electrochemical energy storage, such as relatively independent energy and the high-power operation of power control, high current (response is fast), security performance
High (being primarily referred to as nonflammable and explosion) etc..A domestic popular energy storage project is exactly vanadium flow battery at present.China
It is the natural storage big country of navajoite, in the short term, the vanadium raw materials for vanadium flow battery are not problems.But consider global range
Interior limited navajoite resource and high navajoite price (V2O5, $ 20/kg), the universal and long-time service of vanadium flow battery is all difficult
It realizes.Vanadium flow battery and zinc-bromine flow battery are all traditional flow battery technologies, and there are some technological deficiencies: such as living
Property substance self discharge caused by interelectrode shuttle effect and coulombic efficiency are low；Corrosive electrolyte is not environmentally and safe
Hidden danger.The cost of vanadium flow battery is probably 450/ kilowatt hour of $, and the universal price for the electrochemical energy storage that U.S. Department of Energy is recommended is wanted
In 150/ kilowatt hour of $ hereinafter, this means that high-performance to be developed, economic and practical completely new flow battery technology.
Salt cave is that the cavern left after salt mine is exploited in the way of water-soluble, and shape is from size according to different geology items
Depending on part, bulky and good seal, volume are generally tens of thousands of sides to tens sides, therefore, salt cave provide one it is huge
And the underground space of safety is mainly used to natural gas-storing and petroleum for storing electrolyte, salt cave, but the country is very at present
Salty cave is substantially at blank state because its technical indicator is unable to reach the technical requirements of oil storage or gas storage.And utilize salt
Cave is lower to requiring in terms of the leakproofness, crushing resistance and stability in salt cave to store the electrolyte of aqueous phase system.Therefore, salt is utilized
Cave can sufficiently realize the comprehensive utilization in salt cave to store electrolyte.But it (is utilized generated in-situ for salt cave system is suitable for
Electrolyte) battery system there is still a need for exploitations.
Water phase flow battery still suffers from some challenges at present, as active material (organic matter) solubility is limited, electrolysis
The easy cross contamination of liquid, operation electric current density is low, easy generation water electrolysis side reaction, actual installation practice complexity etc..Therefore, exploitation gram
Take disadvantage mentioned above, and can the energy storing and electricity generating method with potential application in extensive salt cave be very important.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, the present invention proposes a kind of energy-storage generating apparatus based on salt cave, should be had based on the energy-storage generating apparatus in salt cave
There is the advantages that installation is simple, easy to operate.
The present invention also proposes a kind of control method of energy-storage generating apparatus based on salt cave, easy to operate, answers conducive to engineering
With.
The present invention also proposes a kind of application of energy-storage generating apparatus based on salt cave, has a wide range of application.
Energy storing and electricity generating method according to an embodiment of the present invention based on salt cave, the energy-storage generating apparatus include: two electricity
Liquid liquid storage library is solved, two electrolyte liquid storage libraries, which are spaced apart, to be oppositely arranged, and electrolyte liquid storage library is shape after salt well accident
At the salt cave with the molten chamber of physics, it is described it is molten it is intracavitary store electrolyte, the electrolyte includes positive active material, cathode
Active material and supporting electrolyte, the positive active material and the negative electrode active material are water-soluble organic active molecule
And be stored respectively in two salt caves, the supporting electrolyte is the full of the molten intracavitary formation in salt cave when chamber is made in water soluble method salt cave
And brine；Liquid stream battery stack, the liquid stream battery stack are set to electrolyte liquid storage library side；Circulation line, the circulation pipe
Road is for being connected to electrolyte liquid storage library and the liquid stream battery stack；Circulating pump, the circulating pump are set to the circulation line,
So that the electrolyte is circulated supply by the circulating pump, electrochemical reaction occurs in the liquid stream battery stack；It is described
Liquid stream battery stack includes: electrolytic cell groove body, and the electrolyte is filled in electrolytic cell groove body；Battery diaphragm, the battery diaphragm position
In in the electrolytic cell groove body and by the electrolytic cell groove body be divided into the anode region being connected to an electrolyte liquid storage library and
The cathodic region being connected to another electrolyte liquid storage library has the anode including the positive active material in the anode region
Electrolyte has the electrolyte liquid including the negative electrode active material in the cathodic region, and the battery diaphragm can be for institute
It states supporting electrolyte to penetrate, the positive active material and the negative electrode active material is prevented to penetrate；The circulation line includes:
Feed liquid pipeline, the feed liquid pipeline are equipped with the circulating pump, one end of the feed liquid pipeline and the anode region or the yin
Polar region connection；Back liquid pipeline, one end of the back liquid pipeline are connected to the anode region or the cathodic region；The energy storing and electricity generating
Method is the following steps are included: energy storage stage, and by external electric power, electrolyte charging complete in the liquid stream battery stack is opened
The feed liquid pipeline and the back liquid pipeline, start the circulating pump, and the electrolyte in the liquid stream battery stack is passed through injection
It is described molten intracavitary, displace the molten intracavitary equivalent electrolyte and be delivered in the liquid stream battery stack and charge again, repeat with
Upper process continues energy storage；Power generating stage, the electrolyte in the liquid stream battery stack first generate electricity to being nearly completed, by the liquid stream
The dump power of battery pile starts the circulating pump, and the electrolyte injection in the liquid stream battery stack is described molten intracavitary, displacement
The molten intracavitary equivalent electrolyte enters in the liquid stream battery stack and discharges again out, repeats above procedure and persistently generates electricity.
Energy storing and electricity generating method according to an embodiment of the present invention based on salt cave, by opening feed liquid pipeline and back liquid pipeline,
It injects the electrolyte into molten intracavitary or is delivered to liquid stream battery stack progress redox reaction, not only there is at low cost, safety
Can be high, charge-discharge performance is stable the advantages that, additionally it is possible to solve extensive electrochemical energy storage, make full use of some discarded salt
Cave resource.
According to an embodiment of the present invention, electrolyte liquid storage library is connected using at least one casing and the circulation line
Logical, described sleeve pipe includes: production outer tube, and the outer wall of the production outer tube and the well head inner wall in the salt cave pass through cement slurry glue
Knot；Note adopts outer tube, and the note is adopted outer tube and is placed in the production outer tube, described to infuse the upper end for adopting outer tube and the back liquid pipeline
The other end be connected to one in the other end of the feed liquid pipeline, described infuse is adopted the lower end of outer tube and is connected to the molten chamber；
Note adopts inner tube, the note, which adopts inner tube and is placed on the note, to be adopted in outer tube, the upper end and the back liquid pipeline for adopting inner tube of infusing
The other end is connected to another in the other end of the feed liquid pipeline, it is described infuse adopt inner tube lower end protrude into it is described molten intracavitary,
It is described infuse adopt inner tube lower end protrude into the molten intracavitary depth be greater than it is described infuse adopt outer tube lower end protrude into it is described molten intracavitary
Depth adopts inner tube by the note or the note adopts outer tube for the liquid stream electricity in the energy storage stage or the power generating stage
Electrolyte in the heap of pond injects the molten chamber or the molten intracavitary electrolyte is input to the liquid stream battery stack.
According to an embodiment of the present invention, the circulation line further include: the first liquid feeding pipeline, first liquid feeding pipeline
One end adopt outer tube with the note and be connected to, the other end of first liquid feeding pipeline is connected to the other end of the feed liquid pipeline；
Second liquid feeding pipeline, one end of second liquid feeding pipeline are adopted inner tube and are connected to the note, second liquid feeding pipeline it is another
End is connected to the other end of the feed liquid pipeline；First liquid back pipe road, the one end on first liquid back pipe road and the note are adopted outer
Pipe connection, the other end of first liquid feeding pipeline are connected to the other end of the back liquid pipeline；Second of liquid back pipe road, it is described
The one end on the second liquid back pipe road is adopted inner tube with the note and is connected to, the other end and the back liquid pipeline on second liquid back pipe road
Other end connection；When first liquid feeding pipeline is opened, second liquid feeding pipeline is closed, and second liquid back pipe road is opened,
First liquid back pipe road close, the electrolyte from it is described note adopt outer tube discharge, and from it is described note adopt inner tube injection it is described molten
Chamber；When second liquid feeding pipeline is opened, first liquid feeding pipeline is closed, and first liquid back pipe road is opened, and described second
Liquid back pipe road is closed, and the electrolyte adopts inner tube discharge from the note, and adopts outer tube from the note and inject the molten chamber.
According to an embodiment of the present invention, in the energy storage stage, first liquid feeding pipeline and second time described is opened
Liquid pipeline closes second liquid feeding pipeline and first liquid back pipe road, starts the circulating pump, by the liquid stream battery stack
Interior electrolyte adopts inner tube by the note and injects the molten chamber, adopts outer tube by the note and displaces the molten intracavitary equivalent electricity
Solution liquid enters in the liquid stream battery stack to charge again.
According to an embodiment of the present invention, energy storage stage opens second liquid feeding pipeline and first liquid back pipe road,
First liquid feeding pipeline and second liquid back pipe road are closed, the electrolyte in the liquid stream battery stack is adopted by the note
Outer tube injects the molten chamber, adopts inner tube by the note and displaces the molten intracavitary electrolyte and fills again into the liquid stream battery stack
Electricity.
According to an embodiment of the present invention, the endless form of electrolyte described in the power generating stage is different from the energy storage
The endless form of electrolyte in stage.
According to an embodiment of the present invention, the circulation line further include: four control valves, four control valve difference
Set on first liquid feeding pipeline, second liquid feeding pipeline, first liquid back pipe road and second of liquid back pipe road with
It is turned on or off for controlling.
According to an embodiment of the present invention, the inner wall of the production outer tube and described infuse have ring between the outer wall for adopting outer tube
Empty gap injects inert gas in the gap.
According to an embodiment of the present invention, the inert gas is nitrogen or argon gas.
According to an embodiment of the present invention, the quantity of the liquid stream battery stack is one or more, the liquid stream battery stack
Capacity be one of 10kW, 30kW, 50kW, 100kW, 150kW, 500kW, 1MW or a variety of.
According to an embodiment of the present invention, multiple liquid stream battery stacks are in parallel.
According to an embodiment of the present invention, the depth in electrolyte liquid storage library is 100m~2000m, and physical size exists
103m3~106m3, geotemperature is 25 DEG C~70 DEG C, and it is highly 60m~400m that the diameter of the molten chamber, which is 40m~120m,.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of the energy-storage generating apparatus according to an embodiment of the present invention based on salt cave.
Appended drawing reference:
Energy-storage generating apparatus 100；
Electrolyte liquid storage library 10；Molten chamber 11；
Liquid stream battery stack 20；Anode region 21；Cathodic region 22；Battery diaphragm 23；
Circulation line 24；First liquid feeding pipeline 24a；Second liquid feeding pipeline 24b；First liquid back pipe road 24c；Second time liquid
Pipeline 24d；Control valve 24e；
Circulating pump 25；Feed liquid pipeline 26；Back liquid pipeline 27；
Casing 30；Note adopts outer tube 31；Note adopts inner tube 32；Produce outer tube 33；Inert gas 34.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.Of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Below with reference to the accompanying drawings the energy storing and electricity generating method according to an embodiment of the present invention based on salt cave is specifically described.
The energy storing and electricity generating method of energy-storage generating apparatus according to an embodiment of the present invention based on salt cave, energy-storage generating apparatus
100 include that two electrolyte liquid storage libraries 10, liquid stream battery stack 20, circulation line 24 and circulating pump 25, liquid stream battery stack 20 include
Electrolytic cell groove body and battery diaphragm 23, circulation line 24 include feed liquid pipeline 26 and back liquid pipeline 27.
Specifically, two electrolyte liquid storage libraries 10 are spaced apart and are oppositely arranged, electrolyte liquid storage library 10 is after salt well accident
The salt cave with the molten chamber 11 of physics formed, electrolyte is stored in molten chamber 11, and electrolyte includes positive active material, cathode work
Property substance and supporting electrolyte, positive active material and negative electrode active material are water-soluble organic active molecule and store respectively
In two salt caves, supporting electrolyte is the saturated bittern formed in the molten chamber 11 in salt cave when chamber is made in water soluble method salt cave, flow battery
Heap 20 is set to 10 side of electrolyte liquid storage library, and circulation line 24 is followed for being connected to electrolyte liquid storage library 10 and liquid stream battery stack 20
Ring pump 25 is set to circulation line 24, so that electrolyte is circulated supply by circulating pump 25, and electricity occurs in liquid stream battery stack 20
It chemically reacts, electrolyte is filled in electrolytic cell groove body, battery diaphragm 23 is located in electrolytic cell groove body and separates electrolytic cell groove body
For the anode region 21 being connected to an electrolyte liquid storage library 10 and the cathodic region 22 being connected to another electrolyte liquid storage library 10, anode region
There is the anode electrolyte including positive active material in 21, there is the electrolyte including negative electrode active material in cathodic region 22
Liquid, battery diaphragm 23 can be penetrated for supporting electrolyte, prevent positive active material and negative electrode active material from penetrating, feed liquid pipeline
26 are equipped with circulating pump 25, and one end of feed liquid pipeline 26 is connected to anode region 21 or cathodic region 22, one end of back liquid pipeline 27 and
Anode region 21 or cathodic region 22 are connected to, and energy storing and electricity generating method is the following steps are included: energy storage stage, and by external electric power, liquid stream is electric
Feed liquid pipeline 26 and back liquid pipeline 27 are opened in electrolyte charging complete in pond heap 20, start circulating pump 25, by liquid stream battery stack
By injecting in molten chamber 11, the equivalent electrolyte displaced in molten chamber 11 is delivered in liquid stream battery stack 20 again electrolyte in 20
Secondary charging repeats above procedure and continues energy storage；Power generating stage, the electrolyte in liquid stream battery stack 20 first generate electricity to being nearly completed,
By the dump power of liquid stream battery stack 20, start circulating pump 25, the electrolyte in liquid stream battery stack 20 injected in molten chamber 11,
It displaces the equivalent electrolyte in molten chamber 11 and enters in liquid stream battery stack 20 and discharge again, repeat above procedure and persistently generate electricity.
According to one embodiment of present invention, electrolyte liquid storage library 10 is connected using at least one casing 30 and circulation line 24
Logical, casing 30 includes production outer tube 33, note adopts outer tube 31 and note adopts inner tube 32.
Specifically, the outer wall for producing outer tube 33 and the well head inner wall in salt cave are cementing by cement slurry, and note is adopted outer tube 31 and is nested with
In in production outer tube 33, note adopts one in the other end of the upper end of outer tube 31 and the other end of back liquid pipeline 27 and feed liquid pipeline 26
A connection, note are adopted the lower end of outer tube 31 and be connected tos with molten chamber 11, infuse to adopt inner tube 32 and be placed on note and adopt in outer tube 31, infuse and adopt inner tube 32
Upper end is connected to another in the other end of the other end of back liquid pipeline 27 and feed liquid pipeline 26, and the lower end that note adopts inner tube 32 is stretched
Enter in molten chamber 11, the depth that the lower end that note adopts inner tube 32 is protruded into molten chamber 11 protrudes into molten chamber 11 greater than the lower end that note adopts outer tube 31
Depth inner tube 32 is adopted by note or note adopts outer tube 31 for the electrolysis in liquid stream battery stack 20 in energy storage stage or power generating stage
Liquid injects molten chamber 11 or the electrolyte in molten chamber 11 is input to liquid stream battery stack 20.
Further, circulation line 24 further includes the first liquid feeding pipeline 24a, the second liquid feeding pipeline 24b, the first liquid back pipe road
24c and second of liquid back pipe road 24d.
Specifically, one end of the first liquid feeding pipeline 24a is adopted outer tube 31 with note and is connected to, the other end of the first liquid feeding pipeline 24a
It is connected to the other end of feed liquid pipeline 26, one end of the second liquid feeding pipeline 24b is adopted inner tube 32 with note and is connected to, the second liquid feeding pipeline
The other end of 24b is connected to the other end of feed liquid pipeline 26, and one end of the first liquid back pipe road 24c is adopted outer tube 31 with note and is connected to, the
The other end of one liquid feeding pipeline 24a is connected to the other end of back liquid pipeline 27, and the one end on the second liquid back pipe road and note adopt inner tube 32
Connection, the other end on the second liquid back pipe road are connected to the other end of back liquid pipeline 27, when the first liquid feeding pipeline 24a is opened, second
Liquid feeding pipeline 24b is closed；Second liquid back pipe road is opened, and the first liquid back pipe road is closed, and electrolyte is adopted outer tube 31 from note and is discharged, and from
Note adopts inner tube 32 and injects molten chamber 11；When second liquid feeding pipeline 24b is opened, the first liquid feeding pipeline 24a is closed, and the first liquid back pipe road is opened
It opens, the second liquid back pipe road is closed, and electrolyte is adopted inner tube 32 from note and is discharged, and adopts outer tube 31 from note and inject molten chamber 11.
Optionally, in energy storage stage, the first liquid feeding pipeline 24a and the second liquid back pipe road are opened, closes the second liquid feeding pipeline
24b and the first liquid back pipe road start circulating pump 25, and the electrolyte in liquid stream battery stack 20 is adopted inner tube 32 by note and injects molten chamber
11, it outer tube 31 is adopted by note displaces equivalent electrolyte in molten chamber 11 and enters in liquid stream battery stack 20 and charge again.
Optionally, energy storage stage opens the second liquid feeding pipeline 24b and the first liquid back pipe road, closes the first liquid feeding pipeline 24a
With the second liquid back pipe road, the electrolyte in liquid stream battery stack 20 is adopted into outer tube 31 by note and injects molten chamber 11, inner tube 32 is adopted by note
It displaces molten 11 electrolyte inside of chamber and enters liquid stream battery stack 20 and charge again.
According to one embodiment of present invention, the endless form of electrolyte is different from the electricity in energy storage stage in power generating stage
Solve the endless form of liquid.
In certain specific embodiments of the invention, circulation line 24 further includes four control valve 24e, four control valves
24e is respectively arranged on the first liquid feeding pipeline 24a, the second liquid feeding pipeline 24b, the first liquid back pipe road 24c and second of liquid back pipe road 24d
To be turned on or off for controlling.
According to one embodiment of present invention, the inner wall and note for producing outer tube 33, which are adopted, has annular space between the outer wall of outer tube 31
Inert gas 34 is injected in gap in gap.
Further, inert gas 34 is nitrogen or argon gas.
According to one embodiment of present invention, the quantity of liquid stream battery stack 20 is one or more, liquid stream battery stack 20
Capacity is one of 10kW, 30kW, 50kW, 100kW, 150kW, 500kW, 1MW or a variety of.
Optionally, multiple liquid stream battery stacks 20 are in parallel.
In certain specific embodiments of the invention, the depth in electrolyte liquid storage library 10 is 100m~2000m, physical bodies
Product is 103m3~106m3, geotemperature is 25 DEG C~70 DEG C, and it is highly 60m~400m that the diameter of molten chamber 11, which is 40m~120m,.
To sum up, the energy storing and electricity generating method according to an embodiment of the present invention based on salt cave, is adopted in energy storage and power generating stage
Take different electrolyte endless form, endless form first is that electrolyte adopts the injection of inner tube 32 from note, outer tube 31 is adopted from note is discharged,
Endless form second is that electrolyte adopts the injection of outer tube 31 from note, adopts from note inner tube 32 and be discharged, improve energy storage, generating efficiency, mention
Safety is risen, convenient for control.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (12)
1. a kind of energy storing and electricity generating method of the energy-storage generating apparatus based on salt cave, which is characterized in that the energy-storage generating apparatus packet
It includes:
Two electrolyte liquid storage libraries, two electrolyte liquid storage libraries, which are spaced apart, to be oppositely arranged, and electrolyte liquid storage library is salt
The salt cave with the molten chamber of physics that is formed after mine exploitation, it is described it is molten it is intracavitary store electrolyte, the electrolyte includes anode work
Property substance, negative electrode active material and supporting electrolyte, the positive active material and the negative electrode active material are water-soluble
It organic active molecule and is stored respectively in two salt caves, the supporting electrolyte is that salt cave is molten when chamber is made in water soluble method salt cave
The saturated bittern of intracavitary formation；
Liquid stream battery stack, the liquid stream battery stack are set to electrolyte liquid storage library side；
Circulation line, the circulation line is for being connected to electrolyte liquid storage library and the liquid stream battery stack；
Circulating pump, the circulating pump are set to the circulation line, so that the electrolyte is circulated supply by the circulating pump,
Electrochemical reaction occurs in the liquid stream battery stack；
The liquid stream battery stack includes:
Electrolytic cell groove body is filled with the electrolyte in electrolytic cell groove body；
Battery diaphragm, the battery diaphragm be located in the electrolytic cell groove body and by the electrolytic cell groove body be divided into described in one
The anode region of electrolyte liquid storage library connection and the cathodic region that is connected to another electrolyte liquid storage library have in the anode region
Anode electrolyte including the positive active material has the negative electricity including the negative electrode active material in the cathodic region
Liquid is solved, the battery diaphragm can be penetrated for the supporting electrolyte, prevent the positive active material and the negative electrode active
Substance penetrates；
The circulation line includes:
Feed liquid pipeline, the feed liquid pipeline are equipped with the circulating pump, one end of the feed liquid pipeline and the anode region or institute
State cathodic region connection；
Back liquid pipeline, one end of the back liquid pipeline are connected to the anode region or the cathodic region；
The energy storing and electricity generating method the following steps are included:
Energy storage stage, by external electric power, electrolyte charging complete in the liquid stream battery stack, open the feed liquid pipeline and
The back liquid pipeline starts the circulating pump, by described molten intracavitary, the displacement by injecting of the electrolyte in the liquid stream battery stack
The molten intracavitary equivalent electrolyte is delivered in the liquid stream battery stack out charges again, repeats above procedure and continues energy storage；
Power generating stage, the electrolyte in the liquid stream battery stack first generate electricity to being nearly completed, by the surplus of the liquid stream battery stack
Remaining electric power starts the circulating pump, and the electrolyte injection in the liquid stream battery stack is described molten intracavitary, displaces the molten chamber
Interior equivalent electrolyte enters in the liquid stream battery stack to discharge again, repeats above procedure and persistently generates electricity.
2. energy storing and electricity generating method according to claim 1, which is characterized in that electrolyte liquid storage library uses at least one
Casing is connected to the circulation line, and described sleeve pipe includes:
Outer tube is produced, the outer wall of the production outer tube and the well head inner wall in the salt cave are cementing by cement slurry；
Note adopts outer tube, and the note is adopted outer tube and is placed in the production outer tube, described to infuse the upper end for adopting outer tube and the liquid back pipe
The other end in road is connected to one in the other end of the feed liquid pipeline, described to infuse the lower end for adopting outer tube and the molten chamber company
It is logical；
Note adopts inner tube, and the note, which adopts inner tube and is placed on the note, to be adopted in outer tube, described to infuse the upper end for adopting inner tube and the liquid back pipe
The other end in road is connected to another in the other end of the feed liquid pipeline, and the molten chamber is protruded into the lower end that the note adopts inner tube
It is interior, it is described infuse adopt inner tube lower end protrude into the molten intracavitary depth be greater than it is described infuse adopt outer tube lower end protrude into it is described molten intracavitary
Depth inner tube is adopted by the note or the note adopts outer tube for the liquid stream in the energy storage stage or the power generating stage
Electrolyte in battery pile injects the molten chamber or the molten intracavitary electrolyte is input to the liquid stream battery stack.
3. energy storing and electricity generating method according to claim 2, which is characterized in that the circulation line further include:
First liquid feeding pipeline, one end of first liquid feeding pipeline are adopted outer tube with the note and are connected to, first liquid feeding pipeline
The other end is connected to the other end of the feed liquid pipeline；
Second liquid feeding pipeline, one end of second liquid feeding pipeline are adopted inner tube with the note and are connected to, second liquid feeding pipeline
The other end is connected to the other end of the feed liquid pipeline；
First liquid back pipe road, the one end on first liquid back pipe road are adopted outer tube with the note and are connected to, first liquid feeding pipeline
The other end is connected to the other end of the back liquid pipeline；
Second of liquid back pipe road, the one end on second liquid back pipe road are adopted inner tube with the note and are connected to, second liquid back pipe road
The other end be connected to the other end of the back liquid pipeline；
When first liquid feeding pipeline is opened, second liquid feeding pipeline is closed, and second liquid back pipe road is opened, and described first
Liquid back pipe road is closed, and the electrolyte adopts outer tube discharge from the note, and adopts inner tube from the note and inject the molten chamber；
When second liquid feeding pipeline is opened, first liquid feeding pipeline is closed, and first liquid back pipe road is opened, and described second
Liquid back pipe road is closed, and the electrolyte adopts inner tube discharge from the note, and adopts outer tube from the note and inject the molten chamber.
4. energy storing and electricity generating method according to claim 3, which is characterized in that in the energy storage stage, open described first
Liquid feeding pipeline and second liquid back pipe road are closed second liquid feeding pipeline and first liquid back pipe road, are followed described in starting
Electrolyte in the liquid stream battery stack is adopted inner tube by the note and injects the molten chamber by ring pump, adopts outer tube by the note
The molten intracavitary equivalent electrolyte is displaced into being charged in the liquid stream battery stack again.
5. energy storing and electricity generating method according to claim 3, which is characterized in that energy storage stage opens second liquid supply pipe
First liquid feeding pipeline and second liquid back pipe road are closed, by the liquid stream battery stack in road and first liquid back pipe road
Interior electrolyte adopts outer tube by the note and injects the molten chamber, by the note adopt inner tube displace the molten intracavitary electrolyte into
Enter the liquid stream battery stack to charge again.
6. any energy storing and electricity generating method into claim 5 according to claim 1, which is characterized in that the power generation rank
The endless form of electrolyte described in section is different from the endless form of the electrolyte in the energy storage stage.
7. energy storing and electricity generating method according to claim 3, which is characterized in that the circulation line further include:
Four control valves, four control valves are respectively arranged on first liquid feeding pipeline, second liquid feeding pipeline, described
One liquid back pipe road and second of liquid back pipe road for controlling to be turned on or off.
8. energy storing and electricity generating method according to claim 2, which is characterized in that the inner wall of the production outer tube is adopted with the note
There is annular clearance between the outer wall of outer tube, inject inert gas in the gap.
9. energy storing and electricity generating method according to claim 8, which is characterized in that the inert gas is nitrogen or argon gas.
10. energy storing and electricity generating method according to claim 1, which is characterized in that the quantity of the liquid stream battery stack is one
Or it is multiple, the capacity of the liquid stream battery stack is one of 10kW, 30kW, 50kW, 100kW, 150kW, 500kW, 1MW or more
Kind.
11. energy storing and electricity generating method according to claim 10, which is characterized in that multiple liquid stream battery stacks are in parallel.
12. energy storing and electricity generating method according to claim 1, which is characterized in that the depth in electrolyte liquid storage library is
100m~2000m, physical size is 103m3~106m3, geotemperature is 25 DEG C~70 DEG C, the diameter of the molten chamber be 40m~
120m is highly 60m~400m.
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