CN209418662U - Symmetric form flow battery based on salt cave - Google Patents
Symmetric form flow battery based on salt cave Download PDFInfo
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- CN209418662U CN209418662U CN201821736943.0U CN201821736943U CN209418662U CN 209418662 U CN209418662 U CN 209418662U CN 201821736943 U CN201821736943 U CN 201821736943U CN 209418662 U CN209418662 U CN 209418662U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a kind of symmetric form flow batteries based on salt cave; it include: two electrolyte liquid storage libraries; electrolyte liquid storage library is the salt cave with the molten chamber of physics that is formed after salt well accident; it is molten intracavitary to store electrolyte; electrolyte includes positive active material, negative electrode active material and supporting electrolyte; positive active material is consistent with negative electrode active material and is water-soluble organic active molecule, and electrolyte is under inert gas environment protection；Liquid stream battery stack, liquid stream battery stack are connected to two electrolyte liquid storage libraries respectively, and the electrolyte in electrolyte liquid storage library is delivered to liquid stream battery stack by pumping, and participate in electrochemical reaction.The symmetric form flow battery based on salt cave avoids capacity attenuation caused by electrolyte interpenetrates, while having many advantages, such as capacity big, good seal performance, cheap, is suitable for being applied to large-scale energy-accumulating power station, improves the comprehensive utilization ratio of salt cave resource.
Description
Technical field
The utility model belongs to energy storage redox flow batteries field, and in particular to a kind of symmetric form liquid based on salt cave
Galvanic battery.
Background technique
With rapid economic development, the problems such as incident environment and energy shortage, is on the rise, and promotes
Clean energy resource is greatly developed, such as wind energy, solar energy and tide energy etc..But due to the discontinuity of these renewable energy
And unstability, make it using largely being limited, utilization rate is low.It is the steady of power grid therefore, it is necessary to greatly develop energy storage technology
It is qualitative to provide safeguard.In various energy storage technologies, flow battery energy storage technology is due to big with capacity, highly-safe, inexpensive
Etc. advantages, therefore be the first choice of extensive energy storage technology.
The energy storage technology of extensive flow battery is related to the storage of a large amount of electrolyte, and the general storing electricity the how required
Electrolyte is more, and the molten chamber needed is bigger.Salt chamber is subterraneous salt deposit using the underground hole after water-soluble exploitation salt mine, is had
The advantages that capacity is big, good seal performance, small infiltration coefficient.Existing salt cave is chiefly used in storing petroleum, high pressure gas and correlation
Product, such as natural gas etc., therefore can be used for the storage of a large amount of electrolyte.About grinding for organic flow battery based on salt cave
Study carefully less, develop more mature flow battery at present mainly using the electrolyte of inorganic type, such as vanadium flow battery and
Zinc-bromine flow battery etc., is faced with strong acid system or the problems such as active material is more toxic, larger to eco-environmental impact, together
When, due to interpenetrating for positive and negative anodes active material, causing battery, capacity is constantly decayed in the long-term use, therefore having must
Performance improvement is carried out to existing flow battery in view of the above problems.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.
For this purpose, the symmetric form flow battery can the utility model proposes a kind of symmetric form flow battery based on salt cave
Capacity attenuation caused by avoiding electrolyte from interpenetrating.
According to the symmetric form flow battery based on salt cave of the utility model embodiment, comprising: two electrolyte liquid storage libraries,
Two electrolyte liquid storage libraries, which are spaced apart, to be oppositely arranged, and electrolyte liquid storage library has physics for what is formed after salt well accident
The salt cave of molten chamber, it is described it is molten it is intracavitary store electrolyte, the electrolyte include positive active material, negative electrode active material and
Supporting electrolyte, the positive active material is consistent with the negative electrode active material and is water-soluble organic active molecule,
The electrolyte avoids the positive active material of oxidation and negative electrode active material from being reduced under inert gas environment protection；Liquid
Galvanic battery heap, the liquid stream battery stack are connected to two electrolyte liquid storage libraries respectively；The liquid stream battery stack includes: electrolysis
Pond groove body is filled with the electrolyte in electrolytic cell groove body；Two pole plates, two pole plates are oppositely arranged；Battery diaphragm, it is described
Battery diaphragm is located in the electrolytic cell groove body, and the electrolytic cell groove body is divided into and the electrolyte by the battery diaphragm
The anode region of liquid storage library connection and the cathodic region being connected to another electrolyte liquid storage library, a pole plate are set to the anode
Area, another pole plate are set to the cathodic region, have the anolyte including the positive active material in the anode region
Liquid has the electrolyte liquid including the negative electrode active material in the cathodic region, and the battery diaphragm can be for the branch
It holds electrolyte to penetrate, the positive active material and the negative electrode active material is prevented to penetrate；Circulation line, the circulation line
By the electrolyte input in an electrolyte liquid storage library or export the anode region, the circulation line is by another electrolysis
Electrolyte in liquid liquid storage library inputs or exports the cathodic region；Circulating pump, the circulating pump are set to the circulation line, pass through
The circulating pump makes the electrolyte circulate supply.
According to the symmetric form flow battery based on salt cave of the utility model embodiment, positive active material and negative electrode active
Substance is all made of water-soluble organic active molecule, and selection is abundant, while supporting electrolyte is molten using the cheap neutral salt of environmental protection
Liquid, and positive active material is consistent with negative electrode active material, avoids capacity attenuation caused by electrolyte interpenetrates.This
Outside, using salt cave as electrolyte storage tank, have many advantages, such as big capacity, good seal performance, cheap, be suitably applied large-scale
Energy-accumulating power station improves the comprehensive utilization ratio of salt cave resource.
According to the utility model one embodiment, the positive active material and the negative electrode active material are that bipolarity is living
Property substance.
According to the utility model one embodiment, the bipolarity active material is using quinones and its derivative, aldehydes
And its derivative, porphyrin and its derivative, metallocene and its derivative, viologen and its derivative or nitro class and
One of its derivative or two kinds are connected and to be formed by amino, carbon oxygen groups, sulphur oxygen groups or carbon carbon-based group.
According to the utility model one embodiment, the molar concentration of the positive active material and the negative electrode active material
Respectively 0.01mol/L~4mol/L.
According to the utility model one embodiment, the inert gas is at least one of nitrogen, argon gas.
According to the utility model one embodiment, the supporting electrolyte is that one-component saline solution or salt-mixture are water-soluble
Liquid.
According to the utility model one embodiment, the supporting electrolyte is NaCl salting liquid, KCl salting liquid, Na2SO4Salt
Solution, K2SO4Salting liquid, MgCl2Salting liquid, MgSO4Salting liquid, CaCl2Salting liquid, CaSO4Salting liquid, BaCl2Salting liquid,
BaSO4At least one of salting liquid.
According to the utility model one embodiment, the supporting electrolyte molar concentration is 0.1mol/L~6mol/L.
According to the utility model one embodiment, the viscosity of the electrolyte is 10mPas~104mPas。
According to the utility model one embodiment, the positive active material or the negative electrode active material and the support
The molar concentration rate of electrolyte is 1:(1~5).
According to the utility model one embodiment, the battery diaphragm is anion-exchange membrane, cation-exchange membrane, selection
One of property permeable membrane, the compound exchange membrane of zwitterion, dialysis membrane or perforated membrane.
According to the utility model one embodiment, the perforated membrane is organic-inorganic nanofiltration or ultrafiltration membrane.
According to the utility model one embodiment, the battery diaphragm with a thickness of 1 μm~5mm.
According to the utility model one embodiment, the pole plate is graphite electrode, metal electrode or composite conducting catalysis electricity
Pole.
According to the utility model one embodiment, the shape of the pole plate is plate, foil, felt or foam porous shape.
According to the utility model one embodiment, the metal electrode passes through in heat treatment, soda acid processing or oxidation processes
At least one processing method be modified, or pass through carbon material modification, metal material modification, polymer-modified or oxide
At least one of modification method of modifying is modified.
According to the utility model one embodiment, the quantity of the liquid stream battery stack is one or more, the liquid stream electricity
The capacity of Chi Dui is one of 10kW, 30kW, 50kW, 100kW, 150kW, 500kW, 1MW or a variety of.
According to the utility model one embodiment, multiple liquid stream battery stacks are connected in parallel.
According to the utility model one embodiment, the depth of the electrolyte fluid reservoir is 100m~2000m, physical size
103m3~106m3m3, geotemperature is 25 DEG C~70 DEG C, and the diameter of the molten chamber is 40m~120m, highly for 60m~
400m。
According to the utility model one embodiment, the electrolyte fluid reservoir is using at least one casing and the circulation pipe
Road connection, the circulation line includes: feed liquid pipeline, and the feed liquid pipeline is equipped with the circulating pump, the feed liquid pipeline
One end is connected to the anode region or the cathodic region；Back liquid pipeline, one end of the back liquid pipeline and the anode region or institute
State cathodic region connection；Described sleeve pipe includes: that note adopts outer tube, the note adopt the upper end of outer tube and the other end of the back liquid pipeline and
A connection in the other end of the feed liquid pipeline, the lower end that the note adopts outer tube are connected to the molten chamber；Note adopts inner tube, institute
It states note and adopts inner tube and be placed on the note and adopt in outer tube, the note adopts the upper end of inner tube and the other end of the back liquid pipeline and described
Another connection in the other end of feed liquid pipeline, described infuse adopt the lower end of inner tube and protrude into described molten intracavitary, and the note adopts inner tube
Lower end protrude into the molten intracavitary depth and be greater than described infuse and adopt the lower end of outer tube and protrude into the molten intracavitary depth.
According to the utility model one embodiment, the internal diameter that the note adopts inner tube is 15cm~60cm, and the note adopts outer tube
Outer diameter be 20cm~80cm.
According to the utility model one embodiment, quantity N=1~10 of described sleeve pipe.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structural schematic diagram according to the symmetric form flow battery based on salt cave of an embodiment of the present invention；
Fig. 2 is shown according to the structure of the casing of the symmetric form flow battery based on salt cave of another embodiment of the utility model
It is intended to.
Appended drawing reference:
Symmetric form flow battery 100 based on salt cave；
Electrolyte liquid storage library 10；Molten chamber 11；
Liquid stream battery stack 20；Pole plate 21；Electrolytic cell groove body 22；Battery diaphragm 23；Circulation line 24；Circulating pump 25；Feed flow
Pipeline 26；Back liquid pipeline 27；Anode electrolyte 28；Electrolyte liquid 29；Casing 30；Note adopts outer tube 31；Note adopts inner tube 32.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features.
In the description of the present invention, 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 " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Below with reference to the accompanying drawings the symmetric form flow battery based on salt cave according to the utility model embodiment is specifically described
100。
As depicted in figs. 1 and 2, include according to the symmetric form flow battery 100 based on salt cave of the utility model embodiment
Two electrolyte liquid storage libraries 10 and liquid stream battery stack 20, wherein liquid stream battery stack 20 include two pole plates 21, electrolytic cell groove body 22,
Battery diaphragm 23, circulation line 24 and circulating pump 25.
Specifically, two electrolyte liquid storage libraries 10 are spaced apart and are oppositely arranged, electrolyte liquid storage library 10 is formed as salt mine and opens
The salt cave with the molten chamber 11 of physics formed after adopting, stores electrolyte in molten chamber 11, and electrolyte includes positive active material, negative
Pole active material and supporting electrolyte, positive active material is consistent with negative electrode active material and is water-soluble organic active point
Son, electrolyte avoid the positive active material of oxidation and negative electrode active material from being reduced, liquid stream under inert gas environment protection
Battery pile 20 is connected to two electrolyte liquid storage libraries 10 respectively, and electrolyte is filled in electrolytic cell groove body 22, and two pole plates 21 are opposite
Setting, battery diaphragm 23 are located in electrolytic cell groove body 22, and electrolytic cell groove body 22 is divided by battery diaphragm 23 to be stored up with an electrolyte
The anode region that liquid library 10 is connected to and the cathodic region being connected to another electrolyte liquid storage library 10, a pole plate are set to anode region, Ling Yiji
Plate is set to the cathodic region, has the anode electrolyte 28 including positive active material in anode region, with including in cathodic region
The electrolyte liquid 29 of negative electrode active material, battery diaphragm 23 can be penetrated for supporting electrolyte, prevent positive active material and
Negative electrode active material penetrates；Circulation line 24 inputs the electrolyte in an electrolyte liquid storage library 10 or output anode area is as just
Pole electrolyte 28, interior anode electrolyte 28 includes positive active material, and circulation line 24 will be in another electrolyte liquid storage library 10
As electrolyte liquid 29, interior electrolyte liquid 29 includes negative electrode active material, circulating pump for electrolyte input or output cathode area
25 are set to circulation line 24, so that electrolyte is circulated supply by circulating pump 25.
In other words, according to the symmetric form flow battery 100 based on salt cave of the utility model embodiment mainly by two electricity
Liquid liquid storage library 10 and liquid stream battery stack 20 is solved to form, wherein liquid stream battery stack 20 mainly by two pole plates 21, electrolytic cell groove body 22,
Battery diaphragm 23, circulation line 24 and circulating pump 25 form, and are equipped with the salt cave with molten chamber 11 in below ground, salt cave can be used as
Electrolyte liquid storage library 10, two electrolyte liquid storage libraries 10 are spaced apart and are oppositely arranged, and electrolyte, electrolyte are stored in salt cave
In include positive active material, negative electrode active material and supporting electrolyte, positive active material it is consistent with negative electrode active material and
It is water-soluble organic active molecule.Electrolyte inert gas environment protection under, avoid oxidation positive active material and
Negative electrode active material is reduced, and two electrolyte liquid storage libraries 10 are connected to a liquid stream battery stack 20 respectively, two electrolyte liquid storages
Library 10 is respectively that liquid stream battery stack 20 provides electrolyte, and liquid stream battery stack 20 sets there are two the pole plate 21 being oppositely arranged, is being electrolysed
Battery diaphragm 23 is additionally provided in pond groove body 22, battery diaphragm 23 can be penetrated for supporting electrolyte, and prevent positive active material
It is penetrated with negative electrode active material.It is equipped with circulation line 24 between electrolyte liquid storage library 10 and electrolytic cell groove body 22, passes through circulation
Pipeline 24 can input the electrolyte in an electrolyte liquid storage library 10 or output anode area is as anode electrolyte 28, anode electricity
Solve liquid 28 in include positive active material, circulation line 24 can by the electrolyte in another electrolyte liquid storage library 10 input or it is defeated
As electrolyte liquid 29, interior electrolyte liquid 29 includes negative electrode active material in cathodic region out, is equipped with and follows on circulation line 24
Ring pump 25, can make electrolyte circulate confession between electrolyte liquid storage library 10 and electrolytic cell groove body 22 by circulating pump 25
It gives, electrolyte is delivered to two 21 surfaces of pole plate, participates in electrochemical reaction.
As a result, according to the positive electrode active material in the symmetric form flow battery 100 based on salt cave of the utility model embodiment
Matter and negative electrode active material are all made of water-soluble organic active molecule, and selection is abundant, while supporting electrolyte is honest and clean using environmental protection
The neutral salt solution of valence.And positive active material is consistent with negative electrode active material, avoids caused by electrolyte interpenetrates
Capacity attenuation.In addition, using salt cave as electrolyte storage tank, has many advantages, such as big capacity, good seal performance, cheap, be suitable for
Applied to large-scale energy-accumulating power station, the comprehensive utilization ratio of salt cave resource is improved.
One embodiment according to the present utility model, positive active material and negative electrode active material are bipolarity active matters
Matter.
Optionally, bipolarity active material is using quinones and its derivative, aldehydes and its derivative, porphyrin and its to spread out
Biology, metallocene and its derivative, viologen and its derivative or one of nitro class and its derivative or two
Kind is connected and to be formed by amino, carbon oxygen groups, sulphur oxygen groups or carbon carbon-based group.
In some specific embodiments of the utility model, the molar concentration of positive active material and negative electrode active material
Respectively 0.01mol/L~4mol/L.
One embodiment according to the present utility model, inert gas are at least one of nitrogen, argon gas.
In some specific embodiments of the utility model, supporting electrolyte is one-component saline solution or mixed salt
Solution.
Further, supporting electrolyte is NaCl salting liquid, KCl salting liquid, Na2SO4Salting liquid, K2SO4Salting liquid,
MgCl2Salting liquid, MgSO4Salting liquid, CaCl2Salting liquid, CaSO4Salting liquid, BaCl2Salting liquid, BaSO4In salting liquid at least
It is a kind of.
One embodiment according to the present utility model, supporting electrolyte molar concentration are 0.1mol/L~6mol/L.
One embodiment according to the present utility model, the viscosity of electrolyte are 10mPas~104mPas。
In some specific embodiments of the utility model, negative electrode active material or positive active material and support are electrolysed
The molar concentration rate of matter is 1:(1~5).
One embodiment according to the present utility model, battery diaphragm 23 are anion-exchange membrane, cation-exchange membrane, selection
One of property permeable membrane, the compound exchange membrane of zwitterion, dialysis membrane or perforated membrane.
Optionally, perforated membrane is organic-inorganic nanofiltration or ultrafiltration membrane.
One embodiment according to the present utility model, battery diaphragm 23 with a thickness of 1 μm~5mm.
In some specific embodiments of the utility model, pole plate 21 is graphite electrode, metal electrode or composite conducting
Catalysis electrode.
Optionally, the shape of pole plate 21 is plate, foil, felt or foam porous shape.
Optionally, metal electrode is carried out by least one of heat treatment, soda acid processing or oxidation processes processing method
It is modified, or pass through at least one of carbon material modification, metal material modification, polymer-modified or modified oxide modification side
Method is modified.
One embodiment according to the present utility model, the quantity of liquid stream battery stack 20 are one or more, liquid stream battery stack
20 capacity is one of 10kW, 30kW, 50kW, 100kW, 150kW, 500kW, 1MW or a variety of.
Further, multiple liquid stream battery stacks 20 are connected in parallel.
The depth of one embodiment according to the present utility model, electrolyte fluid reservoir 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 molten chamber 11, which is 40m~120m,.
In some specific embodiments of the utility model, electrolyte fluid reservoir is using at least one casing 30 and circulation
Pipeline 24 is connected to, and circulation line 24 includes feed liquid pipeline 26 and back liquid pipeline 27, and casing 30 includes that note adopts outer tube 31 and in note adopts
Pipe 32.
Specifically, feed liquid pipeline 26 is equipped with circulating pump 25, and one end of feed liquid pipeline 26 is connected to anode region or cathodic region,
One end of back liquid pipeline 27 is connected to anode region or cathodic region, and note adopts the upper end of outer tube 31 and the other end of back liquid pipeline 27 and confession
A connection in the other end in liquid pipe road 26, the lower end that note adopts outer tube 31 are connected to molten chamber 11, and note adopts inner tube 32 and is placed on note
It adopts in outer tube 31, note adopts another in the other end of the upper end of inner tube 32 and the other end of back liquid pipeline 27 and feed liquid pipeline 26
Connection, the lower end that note adopts inner tube 32 are protruded into molten chamber 11, and the depth that the lower end that note adopts inner tube 32 is protruded into molten chamber 11 is greater than note and adopts
The depth in molten chamber 11 is protruded into the lower end of outer tube 31.
Further, it is 15cm~60cm that note, which adopts the internal diameter of inner tube 32, and the outer diameter that note adopts outer tube 31 is 20cm~80cm.
Optionally, quantity N=1~10 of casing 30, it should be noted that when hole diameter is larger, note adopts inner tube 32 and note is adopted
Outer tube 31 can promote each deep electrolytic liquid to recycle with multilayer nest, and the depth of setting of inside sleeve is greater than outer side sleeve.
Safety collar is not only had according to the symmetric form flow battery 100 based on salt cave of the utility model embodiment as a result,
The cheap advantage of guaranteed cost, while positive active material is consistent with negative electrode active material avoids electrolyte and interpenetrates and causes
Capacity attenuation.
According to the control method of the symmetric form flow battery 100 based on salt cave of the utility model embodiment, in liquid stream electricity
When the charge or discharge of pond, using constant current charge-discharge, by 10% flow battery SOC value (state-of-charge of prediction battery) when charging
It is charged to 90% flow battery SOC value, when electric discharge, 10% flow battery SOC value is discharged to by 90% flow battery SOC value.
According to the application of the symmetric form flow battery 100 based on salt cave of the utility model embodiment, flow battery conduct
Large-scale energy storage system is supplied for peak regulation, emergency power, or the electric energy for storing the intermittent renewable energy, application
Range is wide.
Further, the intermittent renewable energy includes photovoltaic and wind-force, has environmentally protective effect.
The symmetric form flow battery 100 based on salt cave of the utility model embodiment is carried out combined with specific embodiments below
It illustrates.
Embodiment 1
Using subterranean depth 600m, physical size is 100,000 m3, it is highly 80m, maximum gauge 60m, geotemperature is
30 DEG C of two salt caves are respectively as the electrolyte liquid storage library 20 comprising anode electrolyte 28 and include electrolyte liquid 29
Another electrolyte liquid storage library 20, the well head in salt cave are equipped with 8 casings 30, and the internal diameter that note adopts inner tube 32 is 20cm, and note adopts outer tube 31
Outer diameter be 50cm.Positive active material and negative electrode active material are ambipolar porphyrin active material, concentration 1mol/
L, supporting electrolyte use the NaCl solution of 2mol/L.The viscosity of electrolyte is about 40mPas.Two pole plates 21 are respectively anode
Electrode and negative electrode, anode electrode and negative electrode all use graphite felt electrode, and battery diaphragm 23 uses cation-exchange membrane.
Energy-storage system is formed in parallel by 200 liquid stream battery stacks 20 in total, and the total capacity of entire energy-storage system is 100MW, single liquid stream
The capacity of battery pile 20 is 500kW, and the current efficiency of single battery heap is 93%, voltage efficiency 82%, and energy efficiency is
76%, after charge and discharge cycles 1000 times, capacity attenuation 5%.
Embodiment 2
Using subterranean depth 800m, physical size is 150,000 m3, it is highly 80m, maximum gauge 100m, geotemperature is
34 DEG C of two salt caves are respectively as the electrolyte liquid storage library 20 comprising anode electrolyte 28 and include electrolyte liquid 29
Another electrolyte liquid storage library 20, the well head in salt cave are equipped with 10 casings 30, and the internal diameter that note adopts inner tube 32 is 30cm, and note adopts outer tube 31
Outer diameter be 60cm.Positive active material and negative electrode active material are that the methyl viologen connected by amino and ferrocene are bipolar
Property substance, shown in chemical formula such as following formula (1), concentration 0.8mol/L, supporting electrolyte using 2mol/L Na2SO4Solution.
The viscosity of electrolyte is about 60mPas.Two pole plates 21 respectively anode electrode and negative electrode, anode electrode and negative electrode
Graphite felt electrode is all used, battery diaphragm 23 uses cation-exchange membrane.Energy-storage system in total by 200 liquid stream battery stacks 20 simultaneously
Join, the total capacity of entire energy-storage system is 200MW, and the capacity of single liquid stream battery stack 20 is 1MW, the electricity of single battery heap
Flowing efficiency is 92%, voltage efficiency 81%, energy efficiency 75%, after charge and discharge cycles 1000 times, capacity attenuation 6%.
Embodiment 3
Using subterranean depth 1000m, physical size is 200,000 m3, it is highly 100m, maximum gauge 140m, geotemperature
Respectively as the electrolyte liquid storage library 20 comprising anode electrolyte 28 and include electrolyte liquid 29 for 38 DEG C of two salt caves
Another electrolyte liquid storage library 20, the well head in salt cave is equipped with 20 casings 30, and the internal diameter that note adopts inner tube 32 is 40cm, and note adopts outer tube
31 outer diameter is 80cm.Positive active material and negative electrode active material are the methyl viologen connected by amino and TEMPO bis-
Polar substances, shown in chemical formula such as following formula (2), concentration 1.5mol/L, supporting electrolyte using 2mol/L NaCl with
NaSO4Mixed solution.The viscosity of electrolyte is about 60mPas.Two pole plates 21 are respectively anode electrode and negative electrode, anode
Electrode and negative electrode all use graphite felt electrode, and battery diaphragm 23 uses anion-exchange membrane.Energy-storage system is in total by 300
Liquid stream battery stack 20 is formed in parallel, and the total capacity of entire energy-storage system is 200MW, and the capacity of single liquid stream battery stack 20 is 1MW,
The current efficiency of single battery heap is 92%, voltage efficiency 81%, after energy efficiency is 75% charge and discharge cycles 1000 times, is held
Amount decaying 6%.
Embodiment 4
Using subterranean depth 1000m, physical size is 100,000 m3, it is highly 60m, maximum gauge 120m, geotemperature
Respectively as the electrolyte liquid storage library 20 comprising anode electrolyte 28 and include electrolyte liquid 29 for 38 DEG C of two salt caves
Another electrolyte liquid storage library 20, the well head in salt cave is equipped with 5 casings 30, and the internal diameter that note adopts inner tube 32 is 20cm, and note adopts outer tube
31 outer diameter is 40cm.Positive active material and negative electrode active material are bipolarity substance N-TEMPO-NQ, N-TEMPO-NQ
Chemical formula such as following formula (3) shown in, concentration 1.5mol/L, supporting electrolyte using 2mol/L NaCl and NaSO4Mixing
Solution.The viscosity of electrolyte is about 60mPas.Two pole plates 21 respectively anode electrode and negative electrode, anode electrode and cathode
Electrode all uses graphite felt electrode, and battery diaphragm 23 uses anion-exchange membrane.Energy-storage system is in total by 200 liquid stream battery stacks
20 are formed in parallel, and the total capacity of entire energy-storage system is 200MW, and the capacity of single liquid stream battery stack 20 is 1MW, single battery heap
Current efficiency be 92%, voltage efficiency 81%, energy efficiency be 75% charge and discharge cycles 1000 times after, capacity attenuation 8%.
To sum up, according to the symmetric form flow battery 100 and tradition liquid stream based on salt cave of the utility model embodiment
Battery is compared, and has large capacity, advantage at low cost using salt chamber storage electrolyte；Simultaneously the organic electrolyte of neutral water phase with
The inorganic flow battery of strong acid volume is compared, and has the advantages that selection is abundant, Modulatory character is strong and environmentally friendly；Furthermore symmetric form
Organic flow battery, positive and negative anodes active material is consistent, avoids capacity attenuation caused by electrolyte interpenetrates, and can guarantee electricity
Pond long-term operation performance stability, while the recycling for being also beneficial to electrolyte is lived again, and the operating cost of system is reduced.According to this
The control method of the symmetric form flow battery 100 based on salt cave of utility model embodiment, it is easy to operate, it is conducive to engineer application.
According to the application of the symmetric form flow battery 100 based on salt cave of the utility model embodiment, has a wide range of application, the energy is played
Abirritation.
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 contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (17)
1. a kind of symmetric form flow battery based on salt cave characterized by comprising
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 positive
Active material, negative electrode active material and supporting electrolyte, the positive active material are consistent with the negative electrode active material and equal
For water-soluble organic active molecule, the electrolyte avoids the positive active material of oxidation under inert gas environment protection
It is reduced with negative electrode active material；
Liquid stream battery stack, the liquid stream battery stack are connected to two electrolyte liquid storage libraries respectively；
The liquid stream battery stack includes:
Electrolytic cell groove body is filled with the electrolyte in electrolytic cell groove body；
Two pole plates, two pole plates are oppositely arranged；
Battery diaphragm, the battery diaphragm are located in the electrolytic cell groove body, and the battery diaphragm divides the electrolytic cell groove body
The cathodic region for being divided into the anode region being connected to an electrolyte liquid storage library and being connected to another electrolyte liquid storage library, an institute
Pole plate is stated set on the anode region, another pole plate is set to the cathodic region, and having in the anode region includes the anode
The anode electrolyte of active material has the electrolyte liquid including the negative electrode active material, the electricity in the cathodic region
Pond diaphragm can be penetrated for the supporting electrolyte, and the positive active material and the negative electrode active material is prevented to penetrate；
Electrolyte in one electrolyte liquid storage library is inputted or is exported the anode region by circulation line, the circulation line,
Electrolyte in another electrolyte liquid storage library is inputted or is exported the cathodic region by the circulation line；
Circulating pump, the circulating pump are set to the circulation line, so that the electrolyte is circulated supply by the circulating pump.
2. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the positive active material
It is bipolarity active material with the negative electrode active material.
3. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the inert gas is nitrogen
At least one of gas, argon gas.
4. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the supporting electrolyte is
One-component saline solution or mixed-salt aqueous solution.
5. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the viscosity of the electrolyte
For 10mPas~104mPas。
6. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the positive active material
Or the molar concentration rate of the negative electrode active material and the supporting electrolyte is 1:(1~5).
7. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the battery diaphragm is yin
One in the compound exchange membrane of amberplex, cation-exchange membrane, permoselective membrane, zwitterion, dialysis membrane or perforated membrane
Kind.
8. the symmetric form flow battery according to claim 7 based on salt cave, which is characterized in that the perforated membrane is organic
Inorganic nanofiltration or ultrafiltration membrane.
9. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the thickness of the battery diaphragm
Degree is 1 μm~5mm.
10. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the pole plate is graphite
Electrode, metal electrode or composite conducting catalysis electrode.
11. the symmetric form flow battery according to claim 10 based on salt cave, which is characterized in that the shape of the pole plate
For plate, foil, felt or foam porous shape.
12. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the liquid stream battery stack
Quantity be one or more, the capacity of the liquid stream battery stack is 10kW, 30kW, 50kW, 100kW, 150kW, 500kW, 1MW
One of or it is a variety of.
13. the symmetric form flow battery according to claim 12 based on salt cave, which is characterized in that multiple liquid stream electricity
Chi Dui is connected in parallel.
14. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the electrolyte liquid storage
The depth of tank is 100m~2000m, and physical size is 103m3~106m3, geotemperature be 25 DEG C~70 DEG C, the molten chamber it is straight
Diameter is 40m~120m, is highly 60m~400m.
15. the symmetric form flow battery according to claim 1 based on salt cave, which is characterized in that the electrolyte liquid storage
Tank is connected to using at least one casing with the circulation line, and 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；
Described sleeve pipe includes:
Note adopts outer tube, and the note is adopted in the other end of the upper end of outer tube and the other end of the back liquid pipeline and the feed liquid pipeline
A connection, described infuse adopt the lower end of outer tube and be connected to the molten chamber；
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.
16. the symmetric form flow battery according to claim 15 based on salt cave, which is characterized in that the note adopts inner tube
Internal diameter is 15cm~60cm, and the outer diameter that the note adopts outer tube is 20cm~80cm.
17. the symmetric form flow battery according to claim 15 based on salt cave, which is characterized in that the quantity of described sleeve pipe
N=1~10.
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Cited By (1)
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| US11339483B1 (en) | 2021-04-05 | 2022-05-24 | Alchemr, Inc. | Water electrolyzers employing anion exchange membranes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11339483B1 (en) | 2021-04-05 | 2022-05-24 | Alchemr, Inc. | Water electrolyzers employing anion exchange membranes |
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