CN113871691A - High-temperature lithium battery power station for power grid energy storage peak shaving and working method thereof - Google Patents

High-temperature lithium battery power station for power grid energy storage peak shaving and working method thereof Download PDF

Info

Publication number
CN113871691A
CN113871691A CN202111292565.8A CN202111292565A CN113871691A CN 113871691 A CN113871691 A CN 113871691A CN 202111292565 A CN202111292565 A CN 202111292565A CN 113871691 A CN113871691 A CN 113871691A
Authority
CN
China
Prior art keywords
battery
anode
power
layer
lithium
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.)
Granted
Application number
CN202111292565.8A
Other languages
Chinese (zh)
Other versions
CN113871691B (en
Inventor
卢惠民
卢小溪
高志江
刘建学
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Oufei Jintai Technology Co ltd
Original Assignee
Beijing Oufei Jintai Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Oufei Jintai Technology Co ltd filed Critical Beijing Oufei Jintai Technology Co ltd
Priority to CN202111292565.8A priority Critical patent/CN113871691B/en
Publication of CN113871691A publication Critical patent/CN113871691A/en
Application granted granted Critical
Publication of CN113871691B publication Critical patent/CN113871691B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
    • H01M10/0563—Liquid materials, e.g. for Li-SOCl2 cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/117—Inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
    • H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
    • H01M50/126—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers
    • H01M50/128—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure comprising three or more layers with two or more layers of only inorganic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/131—Primary casings, jackets or wrappings of a single cell or a single battery characterised by physical properties, e.g. gas-permeability or size
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/138—Primary casings, jackets or wrappings of a single cell or a single battery adapted for specific cells, e.g. electrochemical cells operating at high temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/14—Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors
    • H01M50/143—Fireproof; Explosion-proof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/14—Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors
    • H01M50/145—Primary casings, jackets or wrappings of a single cell or a single battery for protecting against damage caused by external factors for protecting against corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/197—Sealing members characterised by the material having a layered structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J15/00—Systems for storing electric energy
    • 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
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a high-temperature lithium battery power station for power grid energy storage peak shaving and a working method thereof, and the high-temperature lithium battery power station structurally comprises a battery, wherein the battery comprises a shell provided with a lining, and an anode graphite block, an anode mother liquid layer, a battery liquid electrolyte layer, a liquid lithium layer, a cathode graphite block, an upper anti-seepage material layer and an upper cover alumina fiber heat insulation board are arranged above the lining at the bottom in the shell; anode steel bars are symmetrically inserted at two ends of the anode graphite block and are respectively and electrically connected with the anode of the power supply and the anode of the DC/AC inverter; cathode steel bars are symmetrically inserted at two ends of the cathode graphite block and are respectively and electrically connected with the negative electrode of the power supply and the negative electrode of the DC/AC inverter, the DC/AC inverter is electrically connected with a power grid through a booster, and the power grid is electrically connected with the power supply. The invention has the advantages of rapid opening and closing, capability of being built close to a load center and the like, overcomes the defects of natural gas or oil consumption, air pollution and the like of a compressed air peak regulation power station, and overcomes the defect that a pumped storage power station is limited by geographical conditions.

Description

High-temperature lithium battery power station for power grid energy storage peak shaving and working method thereof
Technical Field
The invention relates to the technical field of industrial application of high-temperature lithium battery power stations, in particular to a high-temperature lithium battery power station for power grid energy storage peak shaving and a working method thereof.
Background
The electric power composition of China is mainly thermal power, and a rigid power grid structure of China is determined by a power grid structure mainly thermal power, so that the phenomena of large-scale wind abandoning and light abandoning, which can not realize grid connection of wind power and photovoltaic power generation, are caused due to difficult peak shaving. Wind power fluctuates greatly due to high instability of wind, and huge potential safety hazards are brought to a power grid by large-scale wind power and photoelectric access to the power grid. Therefore, the large-scale and large-capacity energy storage peak shaving power station is urgently needed by the power grid in China. The energy storage peak-shaving power station is an effective way for solving the peak-valley difference of a power grid, and can have double effects of peak-shaving and valley-filling in a power system, so that great research and development of energy storage technology are significant.
According to the load condition of the power grid operation, the peak shaving power station can be quickly started or closed technically, and the existing mature pumped storage power station has the defects of being limited by geographical conditions, low in construction speed and incapable of meeting the peak shaving requirements of the system quantitatively. The accumulator battery is also an ideal energy storage peak regulation power station, which has the advantages of rapid start and stop, no limitation of geographical conditions and the like, but has small power, short service life, high cost and high operating cost, thereby limiting the peak regulation of a large power system. Compressed air energy storage peak shaving power stations have also been developed, but have limited energy storage and still consume natural gas or oil during operation. Other energy storage technologies such as superconducting, flywheel, etc. are also at some distance from commercial applications. In a word, under the condition of not reducing the generating efficiency, no peak regulation method can meet the peak regulation requirement of the power system at present; due to the reasons of economy, technology and the like, the installed capacity of various energy storage power stations is far smaller than the capacity required by the system. Nevertheless, research and study on energy storage technology has not been stopped.
Disclosure of Invention
The invention aims to provide a high-temperature lithium battery power station for peak shaving of power grid energy storage and a working method thereof, which are used for solving the problems in the prior art, have the advantages of quick opening and closing, capability of being built close to a load center and the like, overcome the defects that a compressed air peak shaving power station consumes natural gas or oil, pollutes air and the like, and overcome the defect that a pumped storage power station is limited by geographical conditions.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a high-temperature lithium battery power station for power grid energy storage peak shaving, which can convert electric energy into liquid metal lithium for storage in a large scale during the off-peak period of a power grid; the battery comprises a shell, wherein a lining is fixedly arranged on the inner wall of the shell, an anode graphite block is fixedly arranged above the lining positioned at the bottom of the shell, and an anode mother liquid layer, a battery liquid electrolyte layer, a liquid lithium layer, a cathode graphite block, an upper anti-seepage material layer and an upper cover alumina fiber heat insulation board are sequentially arranged above the anode graphite block; the positive pole graphite piece both ends symmetry is inserted and is equipped with the positive pole rod iron, is located the positive pole rod iron of positive pole graphite piece one end is connected with the positive pole electricity of power, is located the positive pole rod iron of the positive pole graphite piece other end is connected with the positive pole electricity of DC AC inverter, negative pole graphite piece both ends symmetry is inserted and is equipped with the negative pole rod iron, is located the negative pole rod iron of negative pole graphite piece one end is connected with the negative pole electricity of power, is located the negative pole rod iron of the negative pole graphite piece other end is connected with the negative pole electricity of DC AC inverter, DC AC inverter is connected with the electric wire netting through the booster electricity, the electric wire netting with the power electricity is connected, and the power is direct current power supply, and the booster is alternating current booster. When the power grid is in a power consumption valley state, a direct-current power supply is switched on to meet the working conditions of the high-temperature lithium battery, the high-temperature lithium battery starts to work, metal lithium in liquid alloy in the high-temperature lithium battery is analyzed out, and large-scale consumed electric energy is converted into lithium chemical energy to be stored. When the power grid is in a power consumption peak, the high-temperature lithium battery power station starts to work, liquid metal lithium is changed into lithium ions to enter the alloy, direct current is discharged, the lithium ions are converted into alternating current through the DC/AC inverter, and the alternating current is boosted through the booster and enters the power grid. And the high-temperature lithium battery alternately oxidizes and reduces the liquid metal lithium to complete the energy storage peak regulation work of the power grid.
Optionally, a retaining wall is vertically arranged on one side inside the shell, the bottom of the retaining wall is in contact connection with the anode mother liquor layer, one side of the top of the retaining wall is fixedly connected with the upper seepage-proof material layer and the upper cover alumina fiber heat-insulating plate, the other side of the retaining wall is adjacent to the other side of the retaining wall, a battery feed opening is formed between the linings of the side wall of the shell, and a battery feed opening cover plate is fixedly arranged at the top of the battery feed opening.
Optionally, the lining comprises an alumina fiberboard fixedly connected with the inner wall of the shell, and one side of the alumina fiberboard, which is far away from the shell, is sequentially and fixedly provided with a clay insulating brick, an impermeable material layer and a magnesium oxide refractory brick.
Optionally, the outer end parts of the anode steel bar and the cathode steel bar are respectively fixedly provided with a steel-aluminum explosion block, and the tail end of the steel-aluminum explosion block is electrically connected with an aluminum soft belt; the aluminum soft belt of the anode steel bar positioned at one end of the anode graphite block is connected with one aluminum bus and then is electrically connected with the positive electrode of the power supply, and the aluminum soft belt of the anode steel bar positioned at the other end of the anode graphite block is connected with the other aluminum bus and then is electrically connected with the positive electrode of the DC/AC inverter; the aluminum soft belt of the cathode steel bar positioned at one end of the cathode graphite block is connected with one aluminum bus and then is electrically connected with the negative electrode of the power supply, and the aluminum soft belt of the cathode steel bar positioned at the other end of the cathode graphite block is connected with the other aluminum bus and then is electrically connected with the negative electrode of the DC/AC inverter.
The invention also provides a working method of the high-temperature lithium battery power station for the energy storage peak shaving of the power grid, which comprises the following steps:
s1: injecting an anode mother solution into the battery to form an anode mother solution layer, wherein the thickness of the anode mother solution layer is 35-40 cm;
s2: injecting liquid electrolyte to the lower surface of the cathode graphite block to form a battery liquid electrolyte layer;
s3: connecting a power supply to start charging; Li-Bi-Sn alloy liquid, wherein the molar ratio of the bismuth-tin alloy is 57:43 when the eutectic point is 139 ℃, and the density is 8.4-8.7g/cm3(ii) a LiI-KI is used as a liquid electrolyte of the battery, and the liquid electrolyte is prepared from the following components in percentage by weight: 42 eutectic temperature of about 260 ℃ and density of 2.71-2.76g/cm3The operation temperature is 280-300 ℃, and the metal lithium density of the liquid lithium layer is 0.543g/cm3。
S4: with the power supply switched on, the lithium in the liquid lithium layer in the battery floats to the surface of the liquid electrolyte layer of the battery until the thickness of the lithium in the liquid lithium layer is 15-25 cm;
s5: and (3) cutting off the power supply, starting the battery to discharge, gradually changing lithium in the liquid lithium layer into lithium ions, entering the liquid electrolyte layer of the bottom battery, converting direct current into alternating current by the inverter, boosting the voltage, and providing the alternating current to the power grid when the power consumption peak of the power grid is high.
Compared with the prior art, the invention has the following technical effects:
the invention adopts the corrosion-resistant magnesia brick as the lining to contact the electrolyte and the high-temperature alloy, the electrode material adopts the graphite material, and the high-temperature corrosion is properly solved. The sealing process is good, the battery is fully sealed by adopting a heat-insulating material, a refractory material and an anti-seepage material, and the sealing problem of the liquid metal battery is solved. The heat loss is less, because the problems of full sealing and electrode corrosion resistance are solved, although the working environment of the liquid metal battery needs high temperature, the heat source is ensured to be stable during working, the heat inside the battery is ensured to be uniform and stable, and the heat loss is reduced. Compared with other means of energy storage and peak regulation at present, the high-temperature lithium battery has the advantages of low cost and large-scale power grid energy storage prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of the high temperature lithium battery power station for peak shaving of power grid energy storage according to the present invention;
FIG. 2 is a schematic diagram of a battery structure of a high-temperature lithium battery power station for power grid energy storage peak shaving according to the present invention;
FIG. 3 is a schematic diagram of a top view of a battery of a high temperature lithium battery power station for grid energy storage peak shaving in accordance with the present invention;
description of reference numerals: 1. a battery feed opening; 2. a battery; 3. a battery feed opening cover plate; 4. covering an alumina fiber insulation board; 5. an upper impermeable material layer; 6. a cathode steel bar; 7. a cathode graphite block; 8. a housing; 9. an alumina fiber insulation board; 10. clay bricks; 11. an impervious material layer; 12. magnesium oxide refractory bricks; 13. a liquid lithium layer; 14. a battery liquid electrolyte layer; 15. an anode mother liquid layer; 16. an anode graphite block; 17. an anode steel bar; 18. steel-aluminum explosive blocks; 19. an aluminum soft belt; 20. an aluminum bus; 21. a DC/AC inverter; 22. a voltage booster; 23. a power grid; 24. a power source.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a high-temperature lithium battery power station for peak shaving of power grid energy storage and a working method thereof, which are used for solving the problems in the prior art, have the advantages of quick opening and closing, capability of being built close to a load center and the like, overcome the defects that a compressed air peak shaving power station consumes natural gas or oil, pollutes air and the like, and overcome the defect that a pumped storage power station is limited by geographical conditions.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1
As shown in fig. 1-3, the invention provides a high-temperature lithium battery power station for power grid energy storage peak shaving, which comprises a battery 2, wherein the battery 2 comprises a shell 8, the shell 8 is formed by welding 1-2cm steel shells, and the lining of the shell 8 is an alumina fiber board 9, a clay insulating brick 10, an impermeable material layer 11 and a magnesium oxide refractory brick 12 which are sequentially laid; the upper cover of the battery 2 is a cathode graphite block 7, the cathode graphite block 7 is formed by splicing graphite blocks with the thickness of 20-25cm, cold ramming paste is filled in gaps among the graphite blocks, and the cold ramming paste is roasted at 180-200 ℃. The two ends of each cathode graphite block 7 are punched and embedded into a cathode steel bar 6, a steel-aluminum explosion block 18 is welded on the cathode steel bar 6, the steel-aluminum explosion block 18 is connected to one end of an aluminum soft belt 19 through welding, the other end of the aluminum soft belt 19 is welded on an aluminum bus 20, and the aluminum bus 20 is connected to a power supply 24. The other side of the cathode graphite block 7 of the battery 2 is also inserted with a cathode steel bar 6, steel aluminum explosion blocks 18 are welded on the cathode steel bar 6, the steel aluminum explosion blocks 18 are connected with one end of an aluminum soft belt 19 by welding, the other end of the aluminum soft belt 19 is welded on an aluminum bus 20, the aluminum bus 20 is connected with a DC/AC inverter 21 and then connected with a booster 22 and a power grid 23.
The battery feed opening cover plate 3 is installed on the battery feed opening 1, the battery feed opening 1 is communicated with the bottom of the battery 2, the anti-seepage material layer 5 and the upper cover alumina fiber heat-insulation plate 4 are paved on the cathode graphite block 7 of the battery 2, and the upper cover alumina fiber heat-insulation plate 4 is an alumina fiber heat-insulation plate and prevents heat loss.
The anode graphite blocks 16 of the battery 2 are formed by splicing graphite blocks with the thickness of 20-25cm, and cold ramming paste is filled in gaps among the graphite blocks and is roasted at 180-200 ℃. Two ends of each anode graphite block 16 are punched and embedded into an anode steel bar 17, a steel-aluminum explosion block 18 is welded on the anode steel bar 17, the steel-aluminum explosion block 18 is connected with one end of an aluminum soft belt 19 corresponding to the steel-aluminum explosion block by welding, the other end of the aluminum soft belt 19 is welded on an aluminum bus 20, and the aluminum bus 20 is connected with a power supply 24; an anode steel bar 17 is also inserted at the other end of the anode graphite block 16 of the battery 2, steel aluminum explosion blocks 18 are welded on the anode steel bar 17, the steel aluminum explosion blocks 18 are connected with one end of an aluminum soft belt 19 by welding, the other end of the aluminum soft belt 19 is welded on an aluminum bus 20, the aluminum bus 20 is connected with a DC/AC inverter 21 and then is connected with a booster 22 and a power grid 23.
The working principle of the high-temperature lithium battery power station for power grid energy storage peak regulation of the invention is as follows: by virtue of the different electrode potentials of the metals in the liquid electrolyte, elements more positive than bismuth remain in the anode mother liquor layer 15 of the electrolytic cell, while elements more negative than bismuth migrate in the cell liquid electrolyte layer 14 and precipitate on the lower surface of the cell cathode graphite block 7.
Injecting a battery anode mother solution into the battery feed opening 1, wherein the level height of a battery anode mother solution layer 15 reaches 35-40 cm; and injecting the liquid electrolyte of the battery to ensure that the level height of the liquid electrolyte layer 14 of the battery reaches 7-10cm until the liquid electrolyte layer 14 of the battery contacts the cathode graphite block 7 of the battery.
And (3) connecting a power supply 24 (connected with a power grid) to start charging, wherein the current intensity is 20-500KA, the working voltage is 3.5-6.0V, the charging working temperature is 260-550 ℃, the charging time is 2-3 hours, the horizontal height of the battery anode mother liquid layer 15 is gradually reduced to 20-25cm, the amount of precipitated metal lithium on the battery liquid electrolyte layer 14 is gradually increased, and the precipitation amount of the precipitated metal is measured or estimated. After the charging is completed, the discharging is started. The discharge time is 2-3 hours, the metal lithium of the liquid lithium layer 13 is gradually reduced, and the level of the anode mother liquid layer 15 is gradually increased to 30-40 cm. The current passes through the cathode steel bar 6 and the anode steel bar 17, passes through the steel aluminum explosion block 18 and the aluminum soft belt 19, enters the aluminum bus 20, goes to the DC/AC inverter 21, is changed into alternating current, is boosted to 380V through the booster 22, and enters the power grid 23. And returning the charged and precipitated metal lithium to the alloy to finish the discharging process.
The anode mother liquor of the anode mother liquor layer 15 adopts Li-Bi-Sn alloy liquor, wherein the molar ratio of bismuth-tin alloy is 57:43 when the eutectic point is 139 ℃, and the density is 8.4-8.7g/cm3(ii) a LiI-KI is used as a liquid electrolyte of the battery, and the electrolyte ratio is 58: 42 eutectic temperature of about 260 ℃ and density of 2.71-2.76g/cm3The operation temperature is 280-300 ℃, and the density of the metallic lithium is 0.543g/cm3. The density of the battery liquid electrolyte layer 14 is smaller than that of the anode mother liquid layer 15, and the battery liquid electrolyte layer 14 always floats on the anode mother liquid layer 15.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (5)

1. The utility model provides a high temperature lithium cell power station for electric wire netting energy storage peak shaving which characterized in that: the battery comprises a shell, wherein a lining is fixedly arranged on the inner wall of the shell, an anode graphite block is fixedly arranged above the lining positioned at the bottom of the shell, and an anode mother liquid layer, a battery liquid electrolyte layer, a liquid lithium layer, a cathode graphite block, an upper anti-seepage material layer and an upper cover alumina fiber heat insulation board are sequentially arranged above the anode graphite block; the positive pole graphite piece both ends symmetry is inserted and is equipped with the positive pole rod iron, is located the positive pole rod iron of positive pole graphite piece one end is connected with the positive pole electricity of power, is located the positive pole rod iron of the positive pole graphite piece other end is connected with the positive pole electricity of DC AC DC-to-AC converter, the negative pole rod iron of negative pole graphite piece both ends symmetry is inserted and is equipped with the negative pole rod iron, is located the negative pole rod iron of negative pole graphite piece one end is connected with the negative pole electricity of power, is located the negative pole rod iron of the negative pole graphite piece other end is connected with the negative pole electricity of DC AC inverter, DC AC inverter is connected with the electric wire netting through the booster electricity, the electric wire netting with the power electricity is connected.
2. The high temperature lithium battery power plant for grid energy storage peak shaving according to claim 1, characterized in that: the vertical barricade that is provided with in inside one side of casing, the barricade bottom with positive pole mother liquor layer contact is connected, barricade top one side with upper portion prevention of seepage bed of material and upper cover alumina fiber heated board fixed connection, the barricade opposite side is rather than adjacent form the battery feed opening between the inside lining of casing lateral wall, the fixed battery feed opening apron that is provided with in battery feed opening top.
3. The high temperature lithium battery power plant for grid energy storage peak shaving according to claim 1, characterized in that: the lining comprises an alumina fiberboard fixedly connected with the inner wall of the shell, and one side of the alumina fiberboard, which is far away from the shell, is sequentially and fixedly provided with a clay insulating brick, an impermeable material layer and a magnesium oxide refractory brick.
4. The high temperature lithium battery power plant for grid energy storage peak shaving according to claim 1, characterized in that: the outer end parts of the anode steel bar and the cathode steel bar are respectively and fixedly provided with a steel-aluminum explosion block, and the tail end of the steel-aluminum explosion block is electrically connected with an aluminum soft belt; the aluminum soft belt of the anode steel bar positioned at one end of the anode graphite block is connected with one aluminum bus and then is electrically connected with the positive electrode of the power supply, and the aluminum soft belt of the anode steel bar positioned at the other end of the anode graphite block is connected with the other aluminum bus and then is electrically connected with the positive electrode of the DC/AC inverter; the aluminum soft belt of the cathode steel bar positioned at one end of the cathode graphite block is connected with one aluminum bus and then is electrically connected with the negative electrode of the power supply, and the aluminum soft belt of the cathode steel bar positioned at the other end of the cathode graphite block is connected with the other aluminum bus and then is electrically connected with the negative electrode of the DC/AC inverter.
5. A working method of a high-temperature lithium battery power station for peak shaving of power grid energy storage is characterized by comprising the following steps: the method comprises the following steps:
s1: injecting an anode mother solution into the battery to form an anode mother solution layer, wherein the thickness of the anode mother solution layer is 35-40 cm;
s2: injecting liquid electrolyte to the lower surface of the cathode graphite block to form a battery liquid electrolyte layer;
s3: connecting a power supply to start charging;
s4: with the power supply switched on, the lithium in the liquid lithium layer in the battery floats to the surface of the liquid electrolyte layer of the battery until the thickness of the lithium in the liquid lithium layer is 15-25 cm;
s5: and (3) cutting off the power supply, starting the battery to discharge, gradually changing lithium in the liquid lithium layer into lithium ions, entering the liquid electrolyte layer of the bottom battery, converting direct current into alternating current by the inverter, boosting the voltage, and providing the alternating current to the power grid when the power consumption peak of the power grid is high.
CN202111292565.8A 2021-11-03 2021-11-03 High-temperature lithium battery power station for power grid energy storage peak regulation and working method thereof Active CN113871691B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111292565.8A CN113871691B (en) 2021-11-03 2021-11-03 High-temperature lithium battery power station for power grid energy storage peak regulation and working method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111292565.8A CN113871691B (en) 2021-11-03 2021-11-03 High-temperature lithium battery power station for power grid energy storage peak regulation and working method thereof

Publications (2)

Publication Number Publication Date
CN113871691A true CN113871691A (en) 2021-12-31
CN113871691B CN113871691B (en) 2023-07-07

Family

ID=78986754

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111292565.8A Active CN113871691B (en) 2021-11-03 2021-11-03 High-temperature lithium battery power station for power grid energy storage peak regulation and working method thereof

Country Status (1)

Country Link
CN (1) CN113871691B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103280604A (en) * 2013-05-14 2013-09-04 清华大学 Liquid energy storage battery monomer structure with floating body electrolytes
US20150004455A1 (en) * 2013-02-12 2015-01-01 Ambri Inc. Electrochemical energy storage devices
CN204289603U (en) * 2014-12-12 2015-04-22 芶富均 A kind of liquid metal cell device
CN105006601A (en) * 2015-08-12 2015-10-28 王建平 Liquid metal battery
CN106532145A (en) * 2016-12-23 2017-03-22 东莞威胜储能技术有限公司 Liquid metal battery
KR101967443B1 (en) * 2017-10-18 2019-04-09 국방과학연구소 Anode and liquid metal battery comprising the same
US10270139B1 (en) * 2013-03-14 2019-04-23 Ambri Inc. Systems and methods for recycling electrochemical energy storage devices

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150004455A1 (en) * 2013-02-12 2015-01-01 Ambri Inc. Electrochemical energy storage devices
US10270139B1 (en) * 2013-03-14 2019-04-23 Ambri Inc. Systems and methods for recycling electrochemical energy storage devices
CN103280604A (en) * 2013-05-14 2013-09-04 清华大学 Liquid energy storage battery monomer structure with floating body electrolytes
CN204289603U (en) * 2014-12-12 2015-04-22 芶富均 A kind of liquid metal cell device
CN105006601A (en) * 2015-08-12 2015-10-28 王建平 Liquid metal battery
CN106532145A (en) * 2016-12-23 2017-03-22 东莞威胜储能技术有限公司 Liquid metal battery
KR101967443B1 (en) * 2017-10-18 2019-04-09 국방과학연구소 Anode and liquid metal battery comprising the same

Also Published As

Publication number Publication date
CN113871691B (en) 2023-07-07

Similar Documents

Publication Publication Date Title
CN109004665B (en) Wind power and photoelectric energy storage and off/grid-connected hydrogen production system
CN107403887B (en) A kind of liquid metal cell device and its assembly method
CN104124459B (en) A kind of square liquid metal cell device and assembly method thereof
CN104505526B (en) A kind of liquid metal cell and liquid metal cell multikilowatt module
CN204289603U (en) A kind of liquid metal cell device
CN204230347U (en) A kind of liquid metal cell device
CN107758613A (en) A kind of co-electrolysis aluminium and the peak regulation energy-storage system of aluminum-water reaction hydrogen manufacturing
WO2016180057A1 (en) Rechargeable molten salt battery with aluminum ion and preparation method thereof
CN103794796A (en) Lead-carbon battery anode, preparation method thereof and applications thereof
CN102780049B (en) High-capacity sodium-nickel-chloride unit flat plate battery and battery pack thereof
CN105914388A (en) Lead methanesulfonate flow battery electrolyte
CN110148779B (en) Application of LiI-KI eutectic salt in low-temperature liquid molten salt lithium battery, low-temperature liquid molten salt lithium battery and preparation method
CN102064306A (en) Long-acting large-capacity lead-bearing lithium battery
CN105006601A (en) Liquid metal battery
CN101841031B (en) Method for preparing positive electrode grid of lead storage battery
CN101834295B (en) Method for preparing negative grid of lead storage battery
CN113871691A (en) High-temperature lithium battery power station for power grid energy storage peak shaving and working method thereof
CN110429356A (en) A kind of recovery method and device of liquid metal cell
CN110289444A (en) It is a kind of to use liquid metal gallium for the aluminium ion battery of cathode
CN206282940U (en) A kind of liquid metal cell
CN110620271A (en) Low-temperature liquid and semi-liquid metal battery
CN101604864B (en) Integrated energy device of sodium-sulfur battery and alkali metal thermoelectric direct converter
CN206657844U (en) A kind of liquid metal cell
CN206497961U (en) A kind of liquid metal cell and its sealed insulation device
CN216958172U (en) Liquid metal battery for industrial application

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant