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WO2019031646A1 - Structure de cellule métallique liquide et procédé de fonctionnement de structure de cellule métallique liquide - Google Patents

Structure de cellule métallique liquide et procédé de fonctionnement de structure de cellule métallique liquide Download PDF

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Publication number
WO2019031646A1
WO2019031646A1 PCT/KR2017/010801 KR2017010801W WO2019031646A1 WO 2019031646 A1 WO2019031646 A1 WO 2019031646A1 KR 2017010801 W KR2017010801 W KR 2017010801W WO 2019031646 A1 WO2019031646 A1 WO 2019031646A1
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WO
WIPO (PCT)
Prior art keywords
liquid metal
housing
chamber
metal battery
flow path
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.)
Ceased
Application number
PCT/KR2017/010801
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English (en)
Korean (ko)
Inventor
백운규
윤희성
신동혁
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.)
Industry University Cooperation Foundation IUCF HYU
Original Assignee
Industry University Cooperation Foundation IUCF HYU
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 Industry University Cooperation Foundation IUCF HYU filed Critical Industry University Cooperation Foundation IUCF HYU
Publication of WO2019031646A1 publication Critical patent/WO2019031646A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • H01M10/38—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
    • 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
    • H01M50/138—Primary casings; Jackets or wrappings 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
    • 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
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the 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
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/191—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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/394—Gas-pervious parts or elements
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • 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

Definitions

  • the present invention relates to a liquid metal cell structure and a method of operating a liquid metal cell structure.
  • a cell is a device that converts the energy released by these changes into electrical energy by using the chemical or physical reaction of the material.
  • a cell using a chemical reaction is called a chemical cell, and a cell using a physical reaction is called a physical transfer.
  • a chemical cell is more common.
  • a chemical cell can be divided into a primary cell and a secondary cell. The primary cell pre-charges the working material near the electrode and uses the electrical energy generated by the chemical change of the material. After the chemical change of the agonist is over, it can not be regenerated because of its lifetime, and it is widely used as a battery.
  • the present invention provides a liquid metal battery structure.
  • the liquid metal battery structure includes a first housing, a second housing coupled to the first housing, and a second housing coupled to the first housing and the second housing, And a second housing which is provided at an interface between the first housing and the second housing and which provides a flow path for communicating the first internal space and the external space of the first housing and the second housing, And may include a gasket having a portion.
  • the liquid metal cell structure is defined as a chamber that receives the combined first and second housings, and a space between the interior of the chamber and the exterior of the combined first and second housings And a gas line for introducing or discharging a gas into or out of the second internal space, wherein the gas line is connected to the second internal space through a second internal space provided by the chamber and a passage portion of the gasket by the engagement of the first and second housings And can communicate with the first internal space provided.
  • the liquid metal battery structure includes a first current collector passing through a second internal space provided by the chamber outside the chamber, an insulator surrounding an outer circumferential surface of the first current collector provided outside the chamber, And a sealing portion sealing a gap between the first current collector provided outside the chamber and the insulator, wherein the second internal space provided by the chamber and the gas line are connected to the outer circumferential surface of the insulator and the first current Can communicate through the gap between the collectors.
  • the gas line may operate as a second current collector, which is electrically connected to one side of the chamber electrically connected to the unit cell, thereby collecting current of a different potential than the first current collector .
  • the gas introduced through the gas line is an inert gas, and the gas flowing out through the gas line may be air.
  • the liquid metal cell structure includes a chamber, and a plurality of liquid metal cell units arranged in a second internal space provided by the chamber interior and electrically connected in series,
  • the unit includes a first housing and a second housing that are coupled to each other, a unit cell provided in a first internal space provided by the engagement of the first housing and the second housing to operate in a liquid metal state,
  • a gasket having a flow path portion provided in a coupling interface of the second housing and providing a flow path for communicating the first internal space and the second internal space defined by the first and second housings and the chamber, and a gasket.
  • the flow paths of the gaskets included in the plurality of liquid metal battery units may provide flow paths in different directions.
  • the flow path portions of the respective gaskets included in the plurality of liquid metal battery units may provide flow paths in different directions.
  • the second housing of the liquid metal battery unit is electrically connected to the unit cell, and the bottom surface of the second housing included in the liquid metal battery unit located at one end of the plurality of liquid metal battery units And the side surface can be in electrical contact with the bottom surface and the side surface of the chamber, respectively.
  • the second housing of the liquid metal battery unit is electrically connected to the unit cell, and the second housings of the plurality of liquid metal battery units are electrically connected in series And may be electrically connected at different points to the chamber.
  • the second housing of the liquid metal battery unit may be electrically connected to the unit cell, and the second housings of the liquid metal battery unit adjacent to each other may be electrically connected to the different side walls of the chamber, respectively .
  • the flow path portions of the gaskets included in the plurality of liquid metal battery units may be provided in different directions in a direction in which the plurality of liquid metal battery units are electrically connected in series.
  • the direction of the flow path provided by the flow path portions of the respective gaskets included in the plurality of liquid metal battery units may be such that the respective second housings of the plurality of liquid metal battery units are connected to the chamber And a direction opposite to that of the first direction.
  • the plurality of liquid metal cell units are connected by a coupling rod passing through the first and second housings of each of the plurality of liquid metal battery units, wherein the coupling rod is provided with a pressure nut And the pressure nut may be configured to apply pressure to the plurality of liquid metal battery units to be stacked.
  • the second housing of the first liquid metal cell unit and the first housing of the second liquid metal cell unit adjacent to each other of the plurality of liquid metal battery units may be screwed by a conductive screw .
  • the unit cell includes an anode, an electrolyte and a cathode in the order of low density, and the electrolyte may impregnate at least a part of the anode side.
  • the electrolyte may impregnate not only the side of the anode but also the top surface of the anode.
  • the present invention provides a method of operating a liquid metal battery structure.
  • the method of operating the liquid metal cell structure further includes removing an air inside the chamber in which at least one liquid metal permitting unit is disposed, And providing an inert gas inside the liquid metal battery unit after the air removing step, wherein in the air removing step, air is introduced into the liquid metal battery unit in a first internal Wherein the inert gas is removed from the first internal space through a second internal space defined by the outside of the liquid metal battery unit and the interior of the chamber, and in the inert gas providing step, Wherein the liquid metal battery unit is provided with a flow path for communicating the first inner space and the second inner space with each other, Gt; gasket < / RTI >
  • the flow paths of the gaskets included in the plurality of liquid metal battery units may provide flow paths in different directions.
  • the second internal space and the first internal space are vented through the gas line, but an inert gas is injected, whereby the liquid metal battery structure according to the above- , The risk of explosion can be reduced.
  • a plurality of liquid metal battery units may be electrically connected in series. Accordingly, the driving voltage of the liquid metal battery structure can be improved.
  • 1 is a view showing a unit liquid metal battery unit according to an embodiment of the present invention.
  • 2 is a view showing a gasket included in a liquid metal battery unit according to an embodiment of the present invention.
  • 3 is a view for explaining a unit cell included in a liquid metal battery unit according to an embodiment of the present invention.
  • 4 is a view showing a liquid metal battery structure according to a first embodiment of the present invention.
  • 5 is a view showing a liquid metal battery structure according to a second embodiment of the present invention.
  • 6 is a view showing gaskets and flow paths included in a liquid metal battery structure according to a second embodiment of the present invention.
  • 7 is a view showing an electrical connection of a liquid metal battery structure according to a second embodiment of the present invention.
  • 8 is a view illustrating a method for lowering the resistance of a liquid metal battery structure according to a second embodiment of the present invention.
  • 9 to 11 are flowcharts illustrating a method of operating a liquid metal battery structure according to an
  • the liquid metal cell structure according to an embodiment of the present invention may include at least one liquid metal battery unit, for example, a plurality of liquid metal battery units may be connected in series.
  • the liquid metal battery unit Prior to describing the liquid metal cell structure according to the above embodiment, the liquid metal battery unit will be described with reference to Figs. 1 to 4. Fig.
  • FIG. 1 is a view showing a unit liquid metal battery unit according to an embodiment of the present invention
  • FIG. 2 is a view showing a gasket included in a liquid metal battery unit according to an embodiment of the present invention
  • FIG. Fig. 7 is a view for explaining a unit cell included in the liquid metal battery unit according to the example;
  • the liquid metal battery unit 100 includes a first housing 102, a second housing 104, a unit cell 110, a gasket 120, A first current collector 130, a coupling rod 150, and a pressure nut 160.
  • the first housing 102 and the second housing 104 may be engaged.
  • the first housing 102 may be in the form of a circular plate.
  • the second housing 104 may be in the form of a container having a space formed therein and an open top. Accordingly, the first housing 102 and the second housing 104 can be coupled to each other to provide a first internal space S 1 . That is, the first internal space S 1 can be understood as a space formed inside the second housing 104, which is sealed by the first housing 102.
  • the unit cell 110 may be provided in the first internal space S 1 .
  • the unit cell 110 may include an anode 112, a cathode 114, and an electrolyte 116.
  • the anode 112 may be a liquid metal.
  • the anode 112 may be liquid lithium (Li).
  • the anode 112 may be liquid sodium (Na), liquid calcium (Ca), or the like.
  • the cathode 114 may be a liquid metal.
  • the cathode 114 may be liquid bismuth (Bi).
  • the cathode 114 may be liquid antimony (Sb), liquid lead (Pb), liquid tin (Sn), or the like.
  • the electrolyte 116 may be a liquid.
  • the electrolyte 116 may be a solution in which LiCl and LiF are mixed in a ratio of 70 mol%: 30 mol%.
  • the anode 112, the cathode 114, and the electrolyte 116 may have different densities from each other. According to one embodiment, the density of the anode 112, the electrolyte 116, and the cathode 114 may be increased in that order. Accordingly, the cathode 114, the electrolyte 116, and the anode 112 may be sequentially stacked in the first internal space S 1 .
  • the first current collector 130 is electrically connected to the first housing 102, the second housing 104, and the first internal space S (S), outside the first and second housings 102, 1 ) can be sequentially penetrated.
  • the first current collector 130 may include a conductive screw 130t.
  • the conductive screw 130t may be formed to protrude from the outer circumferential surface of the first current collector 130.
  • the conductive screw 130t may be screwed to the first housing 102.
  • the first current collector 130 may be fixed to the first housing 102.
  • the end of the first current collector 130 may be impregnated into the impregnation unit 132 including the anode 112.
  • the impregnation unit may be formed of a conductive material containing at least one of carbon, graphite, and nickel (Ni).
  • the impregnating unit may be in the form of a foam, a mesh, a felt, a plate, or a sheet.
  • the impregnation unit 132 may be impregnated with the electrolyte 116. Accordingly, the anode 112 may be impregnated with the electrolyte 116.
  • the electrolyte 116 may impregnate at least a part of the side surface of the anode 112. Specifically, a height h 1 from the interface between the cathode 114 and the electrolyte 116 to the top surface of the electrolyte 116, and a height h 1 from the interface between the cathode 114 and the electrolyte 116
  • the electrolyte 116 can impregnate the anode 112 such that the height h 2 to the top surface of the electrolyte 112 is equal to each other.
  • the electrolyte 116 may be impregnated not only on the side of the anode 112 but also on the top surface of the anode 112.
  • the height h 1 from the interface between the cathode 114 and the electrolyte 116 to the top surface of the electrolyte 116 is greater than the height h 1 from the interface between the cathode 114 and the electrolyte 116,
  • the electrolyte 116 can impregnate the anode 112 such that the height of the electrolyte 112 is greater than the height h 2 to the top surface of the anode 112.
  • the gasket 120 may be provided at a joint interface between the first housing 102 and the second housing 104. That is, the first housing 102 and the second housing 104 can be coupled with each other with the gasket 120 interposed therebetween.
  • the gasket 120 may have a gasket hole 120h and a flow path portion 122 formed thereon.
  • the gasket 120 may be a THERMICULITE 866.
  • the gasket hole 120h may be an inner space of the gasket 120.
  • the gasket hole 120h may be a space through which the first current collector 130 penetrates.
  • the diameter of the gasket hole 120h may be smaller than the diameter of the first internal space S 1 .
  • the flow path portion 122 may communicate the first internal space S 1 with the external spaces of the first and second housings 102 and 104. In other words, the flow path portion 122 can communicate the inner space separated by the first and second housings 102 and 104 with the outer space.
  • the coupling rod 150 may be connected through the first housing 102 and the second housing 104.
  • the coupling rod 150 may include a pressing nut 160 provided at both ends thereof.
  • the pressing nut 160 may apply pressure to the first housing 102 and the second housing 104 to couple the first housing 102 and the second housing 104 together.
  • the liquid metal battery unit according to the above-described embodiment may be in danger of explosion in contact with air as the electrode and the electrolyte are both made of liquid. Accordingly, in order to reduce the risk of explosion, the liquid metal battery structure according to the embodiment of the present invention is disposed in the chamber in which the air is removed and the environment of the inert gas is maintained.
  • a liquid metal battery structure according to a first embodiment of the present invention will be described with reference to FIG.
  • FIG. 4 is a view showing a liquid metal battery structure according to a first embodiment of the present invention.
  • the liquid metal battery structure according to the first embodiment may have a structure in which the liquid metal battery unit 100 according to the above embodiment is accommodated in the chamber 200.
  • the chamber 200 may include a gas line 210, an insulator 220, and a seal 230.
  • the chamber 200 may be electrically connected to the unit cell 110.
  • the first current collector 130 may be connected to the second internal space S 2 outside the chamber 200 to collect the first current.
  • the first current may be negative (-) current.
  • the gas line 210 may be connected to one surface of the chamber 200 to collect the second current.
  • the second current may be a current of a potential different from the first current.
  • the second current may be a positive current.
  • the gas line 210 may be operated as a second current collector.
  • the gas line 210 not only operates as the second current collector but also can introduce or discharge gas into the second internal space S 2 provided by the chamber 200.
  • the second internal space S 2 may be defined as a space between the interior of the chamber 200 and the outside of the first and second housings 102 and 104 that are coupled to each other.
  • the incoming gas may be an inert gas.
  • the inert gas may be argon (Ar).
  • the outgoing gas may be air.
  • the gas line 210 may further include a switching valve 212. Accordingly, the gas line 210 can introduce or discharge different gases in one line.
  • the gas line 210 may communicate with the first inner space S 1 through the second inner space S 2 and the flow path 122 of the gasket 210. Accordingly, the gas in the first internal space S 1 can flow out into the second internal space S 2 through the flow path portion 122.
  • the gas introduced into the second inner space S 2 may be introduced into the first inner space S 1 through the channel portion 122.
  • the inert gas When the inert gas is injected into the chamber 200 by connecting the gas injection device to the gas line 210, the inert gas may be injected into the second internal space S 2 through the gas line 210. Can be injected. At this time, as the second inner space S 2 and the first inner space S 1 are communicated by the flow path portion 122, the first inner space S 1 and the inert gas are injected .
  • the insulator 220 and the sealing portion 230 may be provided outside the chamber.
  • the insulator 220 may be aluminum oxide (Al 2 O 3 ).
  • the seal 230 may be an epoxy resin.
  • the insulator 220 may surround the outer circumferential surface of the first current collector 130.
  • the sealing portion 230 may seal a gap between the first current collector 130 and the insulator 220.
  • the insulator 220 may prevent the first current collector 130 from contacting the gas line 130 and the sealing portion 230 may prevent the inert gas injected into the chamber 200 It is possible to prevent the gas from escaping to the outside.
  • the gas line 210 may be disposed on the side of the insulator 220.
  • the second inner space S 2 and the gas line 210 may communicate with each other through a gap between the outer circumferential surface of the insulator 220 and the first current collector 130.
  • the liquid metal cell structure according to the first embodiment of the present invention includes the liquid metal battery unit 100, the chamber 200 in which the liquid metal battery unit is accommodated, And may include the gas line 210 for draining.
  • the flow path portion 122 included in the gasket 120 of the liquid metal battery unit 100 is connected to the first inner portion 102 provided by the first housing 102 and the second housing 104, (S 1 ) and the second internal space (S 2 ) defined as the space between the interior of the chamber (200) and the outside of the combined first and second housings (102, 104) have.
  • the air is removed from the second internal space S 2 and the first internal space S 1 through the gas line 210, but an inert gas is injected.
  • an inert gas is injected.
  • the liquid metal cell structure may reduce the risk of explosion.
  • the liquid metal battery units according to the above embodiment may be electrically connected in series and disposed in the chamber.
  • a liquid metal battery structure according to a second embodiment of the present invention will be described with reference to FIGS. 5 to 9.
  • FIG. 5 is a view showing a liquid metal battery structure according to a second embodiment of the present invention.
  • the liquid metal battery structure according to the second embodiment includes a plurality of liquid metal battery units 100a, 100b, and 100c according to the above embodiment, . Specifically, a first liquid metal battery unit 100a, a second liquid metal battery unit 100b, and a third liquid metal battery unit 100c can be accommodated in the chamber 200.
  • the liquid metal cell structure according to the second embodiment described with reference to FIG. 5 has three liquid metal battery units. However, this is for convenience of explanation only, Is not limited to the technical idea of.
  • the chamber 200 may be provided with a gas line 210, an insulator 220, and a sealing portion 230.
  • the plurality of liquid metal cell units 100a, 100b, and 100c may be electrically connected in series.
  • the plurality of liquid metal battery units 100a, 100b and 100c are connected to the first and second housings 102a, 102b, 102c, 104a, and 104b of the plurality of liquid metal battery units 100a, 100b, 104b, 104c, respectively.
  • the coupling rod 150 is connected to the first and second housings 102a and 104a of the first liquid metal battery unit 100a, the first and second housings 102a and 104b of the second liquid metal battery unit 100b, The first to third liquid metal battery units 100a, 100b, and 100c through the first and second housings 102b and 104b and the first and second housings 102c and 104c of the third liquid metal battery unit 100c, Lt; / RTI >
  • the coupling rod 150 may include a pressing nut 160 provided at both ends thereof.
  • the pressure nuts 160 may be stacked by applying pressure to the first to third liquid metal cell units 100a, 100b, and 100c. Specifically, the pressure nut 160 is disposed on the upper portion of the first housing 102a of the first liquid metal battery and the lower portion of the second housing 104c of the third liquid metal battery, The metal battery units 100a, 100b, and 100c can be pressed.
  • the plurality of liquid metal battery units 100a, 100b, and 100c are electrically connected in series, adjacent ones of the plurality of liquid metal battery units 100a, 100b, and 100c may be screwed have.
  • the second housing 104a of the first liquid metal battery unit 100a and the first housing 102b of the second liquid metal battery unit 100b may be screwed together.
  • the second housing 104a of the first liquid metal battery unit 100a and the first housing 102b of the second liquid metal battery unit 100b are connected to the second liquid metal battery unit 100b, May be coupled by a conductive screw 130tb formed in the first current collector 130b of FIG.
  • the second housing 104b of the second liquid metal battery unit 100b and the first housing 102c of the third liquid metal battery 100c can be screwed together.
  • the second housing 104b of the second liquid metal battery unit 100b and the first housing 102c of the third liquid metal battery unit 100c are connected to the third liquid metal battery unit 100c, May be coupled by a conductive screw 130tc formed in the first current collector 130c of the first current collector 130c.
  • the first current collector 130a of the first liquid metal battery unit 100a May pass through the second internal space and the first housing 102a of the first liquid metal battery unit 100a from the outside of the chamber 200. [ At this time, the conductive screw 130ta formed in the first current collector 130a of the first liquid metal battery unit 100a is screwed to the first housing 102a of the first liquid metal battery unit 100a, .
  • the gas line 210 is disposed outside the chamber 200 to supply gas into the second internal space S2 In or out.
  • the insulator 220 may surround the outer circumferential surface of the first current collector 130a of the first liquid metal battery unit 100a.
  • the sealing portion 230 may seal a gap between the first current collector 130a of the first liquid metal battery unit 100a and the insulator 220.
  • the liquid metal cell structure according to the second embodiment described above can be applied to each of the first to third liquid metal cell units 100a, 100b, and 100c as in the liquid metal cell structure according to the first embodiment.
  • the second inner space S 2 and the first inner spaces S 1a , S 1b , and S 1c can communicate with each other by the gaskets 120a, 120b, and 120c.
  • description will be made of each of the gaskets included in the liquid metal battery structure according to the second embodiment.
  • FIG. 6 is a view showing gaskets and flow paths included in a liquid metal battery structure according to a second embodiment of the present invention.
  • the flow paths 122a, 122b, and 122c of the gaskets 120a, 120b, and 120c included in the first to third liquid metal battery units 100a, 100b, The Euro can be provided.
  • the flow paths 122a, 122b, and 122c may provide flow paths in different directions in the direction seen from the plane of the chamber 200.
  • the flow path portions 122a, 122b, and 122c of the gaskets 120a, 120b, and 120c included in the first to third liquid metal battery units 100a, 100b As shown in FIG.
  • the flow path portion 122a of the gasket 120a included in the first liquid metal battery unit 100a and the flow path portion 122b of the gasket 120b included in the second liquid metal battery unit 100b May provide a flow path at an angle of 120 [deg.].
  • the flow path portion 122b of the gasket 120b included in the second liquid metal battery unit 100b and the flow path portion 122b of the gasket 120c included in the third liquid metal battery unit 100c 122c may provide a flow path at an angle of 120 [deg.].
  • Portions of the flow paths 122a, 122b and 122c of the gaskets 120a, 120b and 120c included in the first to third liquid metal battery units 100a, 100b and 100c are arranged in the same direction As shown in FIG.
  • the flow path portion 122a of the gasket 120a included in the first liquid metal battery unit 100a and the flow path portion 122b of the gasket 120b included in the second liquid metal battery unit 100b Can provide a flow path in the same direction.
  • the flow path portion 122c of the gasket 120c included in the third liquid metal battery unit 100c is connected to the gasket 120a, 120b included in the first and second liquid metal battery units 100a, 100b, 120b with the flow paths 120a, 120b of the first and second flow paths 120a, 120b.
  • the directions of the flow paths 122a, 122b, and 122c are all the same, the gas flowing into or out of the first inner spaces S 1a , S 1b , and S 1c flows in the same direction
  • the first inner spaces S 1a , S 1b , and S 1c may not easily flow in or out.
  • the directions of the flow paths 122a, 122b, and 122c are different from each other, as the gas flowing into or out of the first internal spaces S 1a , S 1b , and S 1c flows in or out of different directions , And can easily flow in or out into the respective first internal spaces (S 1a , S 1b , S 1c ). Therefore, the time for gas inflow or outflow can be reduced.
  • FIG. 7 is a view showing an electrical connection of a liquid metal battery structure according to a second embodiment of the present invention.
  • the anodes 112a, 112b and 112c of the unit cells 110a, 110b and 110c may be electrically connected to the first current collectors 130a, 130b and 130c.
  • the cathodes 114a, 114b and 114c of the unit cells 110a, 110b and 110c may be electrically connected to the second housings 104a, 104b and 104c.
  • the second housings 104a, 104b and 104c may be electrically connected to the gas line 210.
  • the first current generated in the unit cells 110a, 110b, and 110c can be collected through the first current collectors 130a, 130b, and 130c, and the unit cells 110a, 110b, 110c may be collected through the second housings 104a, 104b, 104c and the gas line 210.
  • the bottom surface and the side surface of the second housing 104c included in the third liquid metal battery unit 100c are connected to the bottom surface P 2 and the side surface P 1 of the chamber 200, So that the second currents generated in the cathode 114c can be collected into the gas line 210 through the second housing 104c.
  • the side surfaces of the second housings 104a and 104b included in the first and second liquid metal battery units 100c are in electrical contact with the side surfaces of the chamber 200, respectively,
  • the second currents generated in the respective cathodes 114a and 114b can be collected into the gas line 210 through the second housings 104a and 104b. This will be described in more detail with reference to FIG.
  • FIG. 8 is a view illustrating a method for lowering the resistance of a liquid metal battery structure according to a second embodiment of the present invention.
  • the second housings 104a, 104b, and 104c may be electrically connected to the chamber 200 at different points, respectively, in order to lower the resistance of the liquid metal cell structure. More specifically, the second housings 104a, 104b, and 104c may be connected to the first to third points L 1 , L 2 , and L 3 of the chamber 200, respectively.
  • the first to third points L 1 , L 2 and L 3 are formed along a direction D 1 in which the first to third liquid metal cell units 100a, 100b and 100c are electrically connected in series,
  • the second housings 104a, 104b, and 104c may be in contact with the side surfaces of the chamber 200 in electrical contact with each other.
  • the second housings of the liquid metal cell units adjacent to each other may be electrically connected to the different side walls 200a, 200b of the chamber 200, respectively.
  • first and second housings 104a and 104b of the first liquid metal battery unit 100a and the second liquid metal battery unit 100b are electrically connected to different side walls of the chamber 200, respectively .
  • the second housing 104a of the first liquid metal battery unit 100a is connected to the second side wall 200b of the chamber 200
  • 2 housing 104b may be connected to the first side wall 200a of the chamber 200.
  • the second liquid metal battery unit 100b and the second housings 104b and 104c of the third liquid metal battery unit 100c may be electrically connected to different side walls of the chamber 200, have.
  • the second housing 104b of the second liquid metal battery unit 100b is connected to the first side wall 200a of the chamber 200
  • 2 housing 104b may be connected to the second side wall 200b of the chamber.
  • the first and second housings 104a, 104b and 104c are electrically connected to the chamber 200 at different points, the first and second housings 104a, 104b,
  • the direction of the flow path provided by the flow path portions 122a, 122b and 122c of the respective gaskets 120a, 120b and 120c is such that the second housings 104a, 104b and 104c are connected to the chamber 200 And may be directions opposite to the points L 1 , L 2 , and L 3 , respectively.
  • the directions of the flow paths provided by the flow paths 122a, 122b, and 122c are different from each other.
  • the first to third liquid metal cell units 100a, 100b, and 100c When the gas flows in or out between the first inner spaces S 1a , S 1b and S 1c of the first inner space S 1 and the second inner space S 2 of the first inner space S 2 , the bottleneck phenomenon is reduced, . That is, by separating the gas and the electric passage, the deterioration phenomenon of the electric passage due to the flow of the gas can be minimized, so that the life can be improved.
  • the liquid metal cell structure according to the second embodiment of the present invention described above includes the chamber 200, the first and second spaces S2 and S3 arranged in the second space S2 provided inside the chamber, And third liquid metal battery units 100a, 100b, and 100c. Accordingly, the driving voltage of the liquid metal battery structure can be improved.
  • the directions of the flow paths 122a, 122b, and 122c of the gaskets 120a, 120b, and 120c may be different from each other. Accordingly, when the gas flows in or out between the first inner spaces S 1a , S 1b , and S 1c and the second inner space S 2 , the bottleneck phenomenon is reduced, Can be leaked.
  • the second housings 104a, 104b, and 104c are electrically connected to the unit cells 110a, 110b, and 110c, 3 Liquid metal battery units 100a, 100b, and 100c may be connected to the chamber 200 at different points L 1 , L 2 , and L 3 along the direction in which they are electrically connected in series. Accordingly, the resistance of the liquid metal battery structure can be reduced.
  • FIG. 9 to 11 are flowcharts illustrating a method of operating a liquid metal battery structure according to an embodiment of the present invention.
  • the method of operating the liquid metal cell structure according to the embodiment may include an air removing step (S100) and an inert gas providing step (S200).
  • the air removing step (S100) may remove air inside the chamber in which at least one liquid metal battery unit is disposed, and remove air inside the liquid metal battery unit.
  • the air removing step S100 includes a step S110 of operating the air removing pump, a step S120 of removing air in the second internal space, (Step S130).
  • the first internal space may be defined as the interior of the liquid metal battery unit.
  • the second internal space may be defined outside the liquid metal battery unit and inside the chamber.
  • the first inner space and the second inner space may communicate with a flow path portion of a gasket included in the liquid metal battery unit.
  • the air in the first internal space can be removed by sequentially passing through the flow path portion and the second internal space when the air removing pump is operated.
  • the inert gas providing step (S200) may provide an inert gas inside the chamber in which the at least one liquid metal battery unit is disposed, and may also provide an inert gas inside the liquid metal battery unit.
  • the inert gas providing step S200 includes the steps of operating an inert gas injection pump S210, providing inert gas to the second internal space S220, 1) < / RTI > in which an inert gas is provided in the inner space.
  • the inert gas injection pump when the inert gas injection pump is operated, the inert gas can be sequentially supplied to the first inner space through the second inner space and the flow path portion.
  • the air removing step (S100) and the inert gas providing step (S200) are performed such that the flow path portions of the gaskets included in the plurality of liquid metal battery units As shown in FIG.
  • the bottleneck phenomenon is reduced, so that the gas can flow in or out more easily.

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  • 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)
  • Sealing Battery Cases Or Jackets (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne une structure de cellule métallique liquide. La structure de cellule métallique liquide comprend : une chambre; et une pluralité d'unités de cellules métalliques liquides disposées dans un second espace interne disposé à l'intérieur de la chambre et connectées électriquement en série les unes avec les autres, chacune des unités de cellules métalliques liquides pouvant comprendre : un premier boîtier et un second boîtier couplés l'un à l'autre; une cellule unique placée dans un premier espace interne prévu par couplage du premier boîtier et du second boîtier pour fonctionner dans un état métallique liquide; et un joint placé dans une interface de couplage entre le premier boîtier et le second boîtier et ayant une unité de trajet d'écoulement pour fournir un trajet d'écoulement pour faire communiquer le premier espace interne et un espace externe des premier et second boîtiers couplés.
PCT/KR2017/010801 2017-08-10 2017-09-28 Structure de cellule métallique liquide et procédé de fonctionnement de structure de cellule métallique liquide Ceased WO2019031646A1 (fr)

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KR10-2017-0101819 2017-08-10
KR1020170101819A KR102575622B1 (ko) 2017-08-10 2017-08-10 액체 금속 전지 구조체 및 액체 금속 전지 구조체의 동작 방법

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150010792A1 (en) * 2013-07-08 2015-01-08 Eos Energy Storage, Llc Molten metal rechargeable electrochemical cell
US20150325821A1 (en) * 2012-10-16 2015-11-12 Ambri Inc. Electrochemical energy storage devices and housings
US20160172714A1 (en) * 2014-12-15 2016-06-16 Massachusetts Institute Of Technology Multi-Element Liquid Metal Battery
US20160301038A1 (en) * 2013-09-18 2016-10-13 Ambri Inc. Unified structural and electrical interconnections for high temperature batteries
JP2016539461A (ja) * 2013-11-01 2016-12-15 アンブリ・インコーポレイテッド 液体金属電池の熱管理

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101283347B1 (ko) 2010-09-07 2013-07-10 주식회사 엘지화학 고출력 대용량의 전지팩

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150325821A1 (en) * 2012-10-16 2015-11-12 Ambri Inc. Electrochemical energy storage devices and housings
US20150010792A1 (en) * 2013-07-08 2015-01-08 Eos Energy Storage, Llc Molten metal rechargeable electrochemical cell
US20160301038A1 (en) * 2013-09-18 2016-10-13 Ambri Inc. Unified structural and electrical interconnections for high temperature batteries
JP2016539461A (ja) * 2013-11-01 2016-12-15 アンブリ・インコーポレイテッド 液体金属電池の熱管理
US20160172714A1 (en) * 2014-12-15 2016-06-16 Massachusetts Institute Of Technology Multi-Element Liquid Metal Battery

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