WO2021080272A1 - Ensemble de batterie à film mince - Google Patents

Ensemble de batterie à film mince Download PDF

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Publication number
WO2021080272A1
WO2021080272A1 PCT/KR2020/014268 KR2020014268W WO2021080272A1 WO 2021080272 A1 WO2021080272 A1 WO 2021080272A1 KR 2020014268 W KR2020014268 W KR 2020014268W WO 2021080272 A1 WO2021080272 A1 WO 2021080272A1
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WO
WIPO (PCT)
Prior art keywords
thin film
film battery
current collector
electrode current
layer
Prior art date
Application number
PCT/KR2020/014268
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English (en)
Korean (ko)
Inventor
최용석
김태봉
송관욱
Original Assignee
동우 화인켐 주식회사
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Publication of WO2021080272A1 publication Critical patent/WO2021080272A1/fr

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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • 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
    • H01M10/0562—Solid materials
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • 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
    • 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
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • 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

Definitions

  • the present invention relates to a thin film battery. Specifically, the present invention relates to a thin film battery assembly capable of designing and using desired battery performance.
  • Thin film batteries are widely used as ultra-miniature power sources for driving miniaturized portable electronic devices, information and communication devices, and the like.
  • a polymer-based thin film battery has been actively developed using advantages such as flexibility, low cost, and ease of manufacture.
  • Korean Patent Publication No. 10-2012-0098346 discloses a method of manufacturing a thin film battery. This method includes sequentially depositing a positive electrode current collector and a positive electrode active material on a substrate formed of a heat-resistant polymer, masking a portion of the substrate where the positive electrode active material is not deposited, and applying a wavelength of 580 to 950 nm to the positive electrode active material. It includes the step of irradiating the possessed light.
  • the present invention is to solve this problem of the prior art.
  • the present invention is to provide a thin film battery capable of flexibly selecting battery performance such as capacity according to the usage environment of the thin film battery.
  • the present invention is to provide a thin film battery that can be easily applied to a flexible device, a sharp curved area, etc. by increasing flexibility.
  • the thin film battery assembly of the present invention for achieving this object includes a base layer, a plurality of thin film battery cells formed spaced apart on the base layer, and a connection wiring connecting the plurality of thin film battery cells in series or parallel. It can be configured to include.
  • the thin film battery cell penetrates through the battery layer formed on the base layer, the insulating layer formed on the battery layer, and the insulating layer, and one side is connected to the thin film battery cell, and the other side is exposed to the outside of the insulating layer to be connected to the connection wiring. It may include a plurality of contacts.
  • the battery layer is a positive electrode and negative electrode material, a positive electrode material and a negative electrode material in contact with each of the positive and negative current collectors, the positive electrode current collector and the negative electrode current collector, respectively formed on the base layer. It may include an electrolyte layer positioned at, and an encapsulation layer for sealing the positive electrode current collector, the negative electrode current collector, the positive electrode material, the negative electrode material, and the electrolyte layer while opening a portion of the positive electrode current collector and the negative electrode current collector.
  • the insulating layer may cover the encapsulation layer, the positive electrode current collector, and the open partial regions of the negative electrode current collector.
  • the contact penetrates the insulating layer and one side is connected to the positive electrode current collector, the other side is the first contact exposed to the outside of the insulating layer, and one side is connected to the negative electrode current collector through the insulating layer.
  • the other side may include a second contact exposed to the outside of the insulating layer.
  • connection wiring in the connection wiring, a first contact of a plurality of thin film battery cells is arranged at one end and a second contact is arranged at the other end, and the first connection wiring and the other end are connected to the first contact along one end.
  • a second connection line connected to the second contact may be included along the line.
  • connection wiring is a connection wiring in which a first contact of a plurality of thin film battery cells is arranged at one end and a second contact is arranged at the other end, and sequentially connects the first contact and the adjacent second contact. It may include. Through this configuration, a plurality of thin film battery cells may be connected in series.
  • connection wiring in the connection wiring, a first contact and a second contact are alternately arranged at one end, and a first contact and a second contact of one end are connected, but the two thin film battery cells are separated by a connection unit.
  • the first connection wire, the second contact of the other end, and the first contact may be connected, but may include a second connection wire that is spaced apart from the two thin film battery cells by a connection unit and alternately arranged with the first connection wire.
  • the base layer may include a separation layer and a separation protective layer formed on the separation layer.
  • the thin film battery assembly of the present invention may further include a lower protective film positioned under the separation layer.
  • the separation layer and the separation protective layer may be separated by thin film battery cells.
  • the thin film battery assembly of the present invention may further include an upper protective film covering the connection wiring.
  • the thin film battery assembly of the present invention may include a substrate layer, a plurality of thin film battery cells spaced apart from each other on the substrate layer, and a connection wiring for connecting the plurality of thin film battery cells in series or in parallel.
  • the thin film battery cell may include a battery layer formed on a base layer and an insulating layer formed on a part of the battery layer. A portion of the battery layer on which the insulating layer is not formed may be connected to the connection wiring.
  • the battery layer is a positive electrode and negative electrode material, a positive electrode material and a negative electrode material in contact with each of the positive and negative current collectors, the positive electrode current collector and the negative electrode current collector, respectively formed on the base layer. It may include an electrolyte layer positioned at, and an encapsulation layer for sealing the positive electrode current collector, the negative electrode current collector, the positive electrode material, the negative electrode material, and the electrolyte layer while opening a portion of the positive electrode current collector and the negative electrode current collector.
  • the insulating layer may cover the encapsulation layer, the positive electrode current collector, and the open partial regions of the negative electrode current collector.
  • a part of the battery layer in which the insulating layer is not formed may be a part of the positive electrode current collector and the negative electrode current collector.
  • connection wiring may be connected to the positive electrode current collector of the thin film battery cell, and the other side may be connected to the negative electrode current collector or the positive electrode current collector of an adjacent thin film battery cell in the insulating layer.
  • connection wiring may be connected to a negative electrode current collector of a thin film battery cell on one side of the insulating layer and to a positive electrode current collector or a negative electrode current collector of an adjacent thin film battery cell.
  • connection wiring may be integral with the positive electrode current collector or the negative electrode current collector.
  • the base layer may include a separation layer and a separation protective layer formed on the separation layer.
  • the thin film battery assembly of the present invention may further include a lower protective film positioned under the separation layer.
  • the separation layer and the separation protective layer may be separated by thin film battery cells.
  • the thin film battery assembly of the present invention may further include an upper protective film covering the connection wiring.
  • the thin film battery assembly of the present invention having such a configuration, a part of a plurality of thin film battery cells connected in series or in parallel can be cut and used by a desired battery performance, and thus, it is possible to flexibly respond to required capacity and the like.
  • the flexibility of the thin film battery can be maximized by horizontally arranging a plurality of thin film battery cells apart from each other.
  • the thin film battery assembly of the present invention can be easily applied to a flexible device, and further, it can be easily applied to an abrupt curved surface such as an edge or a bent portion of a foldable electronic device.
  • FIG. 1A and 1B are plan and cross-sectional views showing a first embodiment of a thin film battery assembly according to the present invention.
  • FIG. 2 is a plan view showing a modified example of the first embodiment of the thin film battery assembly according to the present invention.
  • 3A and 3B are plan and cross-sectional views showing a second embodiment of a thin film battery assembly according to the present invention.
  • FIG 4 is a plan view showing a modified example of the first embodiment of the thin film battery assembly according to the present invention.
  • FIG. 5 is a plan view showing a modified example of the second embodiment of the thin film battery assembly according to the present invention.
  • FIG. 6 is a plan view showing an application example of the thin film battery assembly according to the present invention.
  • FIG. 1A and 1B are plan and cross-sectional views showing a first embodiment of a thin film battery assembly according to the present invention.
  • the thin film battery assembly according to the present invention includes a plurality of thin film battery cells 100A to 100D and a plurality of thin film battery cells 100A to 100D connected in series and in parallel. It may be configured to include the connection wiring (210, 220), and the upper protective film (300).
  • the plurality of thin film battery cells 100A to 100D may be spaced apart at predetermined intervals and arranged horizontally.
  • the thin film battery cells 100A to 100D may have the same or different shape and capacity.
  • the positive electrode current collectors or the negative electrode current collectors may be arranged in the same direction, or may be arranged in a zigzag manner.
  • FIG. 1B is a cross-sectional view taken along AA′ of FIG. 1A.
  • the thin film battery assembly may include a base layer 120, a thin film battery cell 100A formed on the base layer, and a plurality of connection wires 210 and 220.
  • the thin film battery cell 100A may include battery layers 131 to 136, insulating layers 140, first and second contacts 151 and 152, and the like.
  • the base layer 120 may be used in a transfer process for manufacturing the thin film battery cells 100A to 100D.
  • the transfer process includes forming the thin film battery cells 100A to 100D on a carrier substrate and then transferring the thin film battery cells 100A to 100D onto a flexible substrate.
  • the base layer 120 may be used to separate the thin film battery cells 100A to 100D from the carrier substrate in the transfer process.
  • the base layer 120 may be formed of an organic film, an inorganic film, or an organic-inorganic composite film, but is not limited thereto.
  • the inorganic film may include, for example, any one or more of a metal oxide and a metal nitride, and the organic film may include, for example, high-density polyethylene, low-density polyethylene, polypropylene, polyester, polyimide, polycarbonate, and the like.
  • the organic-inorganic composite film may be formed of, for example, a composite of inorganic particles and a polymer. Inorganic particles include SiO 2 , Al 2 O 3 , MgO, BaTiO 3 , ZrO 2 , ZnO, and the like.
  • the base layer 120 may be formed through a known coating method, for example, spin coating, die coating, spray coating, roll coating, screen coating, slit coating, dip coating, gravure coating, or the like.
  • the base layer 120 may be composed of a separation layer and a separation protective layer formed on the separation layer.
  • the separation layer is a portion that is in direct contact with the carrier substrate, and may be formed by adjusting the peeling force so as to be neatly separated without cracking when the battery layer is separated from the carrier substrate, or may be formed using a polymer organic film.
  • the polymer organic film is, for example, polyimide, polyvinyl alcohol, polyamic acid, polyamide, polyethylene, polystyrene, polynorbornene ( polynorbornene), phenylmaleimide copolymer, polyazobenzene, polyphenylenephthalamide, polyester, polymethyl methacrylate, polyarylate , Cinnamate-based polymer, coumarin-based polymer, phthalimidine-based polymer, chalcone-based polymer, and aromatic acetylene-based polymer may be used.
  • the separation protective layer is bonded on the separation layer to protect the separation layer, and may prevent cracking of the separation layer or the thin film battery cells 100A to 100D during the separation process.
  • the separation protective layer may be used without limitation as long as it is a material having flexibility, such as an organic insulating film, a polymer resin film, or an organic-inorganic composite film.
  • the separation protective layer may be formed as a single layer or multiple layers to prevent moisture or oxygen from penetrating into the battery layer.
  • the lower protective film 110 may be formed under the base layer 120.
  • the lower protective film 110 is a film that protects the base layer 120, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), polyimide (PI), triacetylcellulose (TAC) It may include a flexible plastic film such as, but may not be limited to the plastic film.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PP polypropylene
  • PI polyimide
  • TAC triacetylcellulose
  • It may include a flexible plastic film such as, but may not be limited to the plastic film.
  • the lower protective film 110 may be omitted.
  • the battery layers 131 to 136 are for discharging or charging electricity, and the positive electrode current collector 131 and the negative electrode current collector 133, the positive electrode material 132 and the negative electrode material 134, the electrolyte layer 135, and the encapsulation layer (136) and the like.
  • the battery layers 131 to 136 may additionally include a separate functional layer to improve battery performance, such as capacity, output, lifespan, and ion conductivity of the thin film battery.
  • the functional layer may consist of one or more layers. The location of the functional layer is not limited.
  • the battery layers 131 to 136 may be formed by a deposition method such as sputtering, PVD, CVD, or thermal evaporation, and more preferably may be performed by sputtering, but may be performed without being limited to a deposition method.
  • a deposition method such as sputtering, PVD, CVD, or thermal evaporation, and more preferably may be performed by sputtering, but may be performed without being limited to a deposition method.
  • the positive electrode current collector 131 and the negative electrode current collector 133 may be formed to be spaced apart from the base layer 120.
  • the positive electrode current collector 131 and the negative electrode current collector 133 are made of materials having excellent electrical conductivity, such as silver (Ag), gold (Au), platinum (Pt), palladium (Pd), aluminum (Al), and nickel ( Ni), copper (Cu), titanium (Ti), vanadium (V), chromium (Cr), iron (Fe), cobalt (Co), manganese (Mn), can be composed of any one or more of stainless steel and Inconel. have.
  • the positive electrode current collector 131 and the negative electrode current collector 133 may be configured as a single layer or, if necessary, may be configured as a multilayer such as titanium/Inconel/Platinum.
  • the positive electrode current collector 131 and the negative electrode current collector 133 are not particularly limited in thickness, but may be formed to have a thickness of, for example, 1000 to 2000 ⁇ .
  • the positive electrode material 132 may be formed so that one side of the positive electrode material 132 is in contact with the positive electrode current collector 131.
  • the cathode material 132 any one or more of lithium metal oxide, lithium metal phosphide, and lithium metal silicide may be used.
  • the cathode material 132 is lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, lithium vanadium oxide, lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, lithium nickel manganese oxide, lithium niobium oxide, lithium iron silicide, It may be formed of lithium manganese silicide, lithium iron phosphide, lithium manganese phosphide, and the like, and these may be used alone or two or more of them may be used in combination. In particular, it may be desirable to be formed of lithium cobalt oxide (LiCoO 2) having excellent electrochemical properties.
  • LiCoO 2 lithium cobalt oxide
  • the cathode material 132 may be formed to have a thickness of 3 to 30 ⁇ m.
  • the negative electrode material 134 may be formed so that one side of the negative electrode material 134 is in contact with the negative electrode current collector 133.
  • a carbonaceous material such as natural graphite and artificial graphite, a lithium-containing titanium composite oxide, a metal material such as Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe, etc., composed of such metal materials. Any one or more materials selected from the group consisting of alloys, oxides of these metals, and composites of these metals and carbon may be used, but are not limited thereto.
  • the negative electrode material 134 may use lithium (Li), and may have a thickness of 2 to 10 ⁇ m.
  • the electrolyte layer 135 is to move lithium ions between the positive electrode material 132 and the negative electrode material 134 and to prevent a short circuit due to direct contact between the positive electrode material 132 and the negative electrode material 134, and has high lithium ions. It can be composed of a solid electrolyte material having conductivity and resistivity.
  • Solid electrolyte materials include LiPON (lithium phosphorous oxynitride), LiBON (lithium boron oxynitride), Li 3 PO 4 (lithium phosphate), Li 2 OB 2 O 3 , Li 2 OB 2 O 3 -P 2 O 5 , Li 2 OB 2 O 3 -ZnO, Li 2 SP 2 S 5, Li 2 O-SiO 2 , Li 2 OV 2 O 5 -SiO 2 , Li 2 SO 4 -Li 2 OB 2 O 3 , LiSiPON (lithium silicon phosphorous oxynitride), LiSiON (lithium silicon oxynitride), LiBPON (lithium boron phosphorous oxynitride), etc. may be used, and these may be used alone or in combination of two or more.
  • the encapsulation layer 136 is to block the penetration of moisture into the cathode material 132, the anode material 134, and the electrolyte layer 135, the cathode material 132, the anode material 134, the electrolyte layer 135 It can be configured in a form that covers.
  • the encapsulation layer 136 includes a cured product of a solvent-free adhesive composition including a photocurable composition including a urethane (meth)acrylate oligomer, a (meth)acrylate monomer, a tackifier resin and a photoinitiator, and a reactive ultraviolet stabilizer. Can, but is not limited to this.
  • the encapsulation layer 136 may be formed to open portions of the positive electrode current collector 131 and the negative electrode current collector 133 for external connection with the battery layers 131 to 136.
  • the insulating layer 140 may be combined to cover the encapsulation layer 136 to further protect the battery layers 131 to 136.
  • the insulating layer 140 may be formed to seal the positive electrode current collector 131 exposed from the encapsulation layer 136 and a partial open area of the negative electrode current collector 133.
  • the insulating layer 140 may be formed of a thermosetting or UV curable organic polymer.
  • a thermosetting or UV curable organic polymer for example, an epoxy compound, an acrylic compound, a melamine compound, etc. may be used, but the present invention is not limited thereto.
  • the first and second contacts 151 and 152 may pass through the insulating layer 140 to connect the battery layers 131 to 136 and the connection wirings 210 and 220.
  • the first contact 151 may penetrate the insulating layer 140 and connect one side to the positive electrode current collector 131 and the other side to be exposed to the outside of the insulating layer 140 to connect to the first connection wiring 210.
  • the second contact 152 may penetrate the insulating layer 140 and connect one side to the negative electrode current collector 133 and the other side to be exposed to the outside of the insulating layer 140 to connect to the second connection wiring 220.
  • the first and second connection wirings 210 and 220 may electrically connect adjacent thin film battery cells 100A to 100D.
  • the first and second connection wirings 210 and 220 are connected to the first and second contacts 151 and 152 of the thin film battery cells 100A to 100D to connect the plurality of thin film battery cells 100A to 100D in parallel or in series. I can.
  • the first connection wiring 210 is formed at one end, that is, the thin film battery cell 100A. It may be configured to connect to the positive electrode current collectors 131 of ⁇ 100D), and the second connection wiring 220 to connect to the other end, that is, the negative electrode current collectors 133 of the thin film battery cells 100A to 100D. In this connection configuration, the first and second connection wirings 210 and 220 connect the plurality of thin film battery cells 100A to 100D in parallel.
  • some of the plurality of thin film battery cells 100A to 100D for example, two thin film battery cells 100A to 100B or three thin film battery cells 100A to 100C, are cut as needed. Can be used. Accordingly, desired battery performance can be designed and applied, and it is possible to easily respond to changes in usage capacity and the like.
  • an upper protective film 300 may be further included to cover and protect the first and second connection wires 210 and 220. Specifically, it may be coupled to the insulating layer 140 and the first and second connection wires 210 and 220 in a form that covers the first and second connection wires 210 and 220.
  • the upper protective film 300 is, like the lower protective film 110, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), polyimide (PI), triacetylcellulose (TAC), etc.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PP polypropylene
  • PI polyimide
  • TAC triacetylcellulose
  • the flexible plastic film of may be used, but is not limited thereto.
  • FIG. 2 is a plan view showing a modified example of the first embodiment of the thin film battery assembly according to the present invention.
  • a modified example of the first embodiment illustrated in FIG. 2 illustrates a case in which a plurality of thin film battery cells 100A to 100D are connected in series.
  • the positive electrode current collector 131 of the first thin film battery cell 100A and the negative electrode current collector 133 of the second thin film battery cell 100B adjacent to each other may be arranged to be positioned in the same direction.
  • the first connection wiring 210 is connected to the first contact 151 connected to the positive electrode current collector 131 in the first thin film battery cell 100A, and the adjacent second thin film battery cell 100B At, it is possible to connect to the second contact 152 connected to the negative electrode current collector 133.
  • the first and second connection wirings 210 and 220 connect the plurality of thin film battery cells 100A to 100D in series.
  • connection configuration when viewed from the first connection wiring 210, is a form in which two thin film battery cells 100A and 100B are separated as a connection unit, that is, the second thin film battery cell 100B and the third thin film battery
  • the connection of the cell 100C may be skipped, and the third thin film battery cell 100C and the subsequent fourth thin film battery cell 100D may be reconnected.
  • the two thin film battery cells 100B and 100C are separated as a connection unit, that is, the connection between the third thin film battery cell 100C and the fourth thin film battery cell 100D is It can be skipped and reconnected in the fourth thin film battery cell 100D and the subsequent fifth thin film battery cell.
  • some of the plurality of thin film battery cells 100A to 100D are cut as necessary. Can be used. Through this, a desired battery performance can be designed and applied, and it is possible to easily respond to changes in required capacity and voltage.
  • the connection wiring is first In the thin film battery cell 100A, a second contact connected to the negative electrode current collector 133 is connected to the first contact 151 connected to the positive electrode current collector 131, and in the adjacent second thin film battery cell 100B, the second contact ( 152).
  • the connection wiring connected to the second contact 152 of the second thin film battery cell 100B may be connected to the first contact 151 of the adjacent third thin film battery cell 100C.
  • the first contact 151 and the second contact 152 may be sequentially connected between adjacent thin film battery cells.
  • the first and second connection wirings 210 and 220 connect the plurality of thin film battery cells 100A to 100D in series.
  • some of the plurality of thin film battery cells 100A to 100D may be cut and used as necessary. .
  • a desired battery performance can be designed and applied, and it is possible to easily respond to changes in required capacity and voltage.
  • 3A and 3B are plan and cross-sectional views showing a second embodiment of a thin film battery assembly according to the present invention.
  • 3B is a cross-sectional view taken along BB′ of FIG. 3A.
  • a base layer 120 As shown in FIGS. 3A and 3B, a base layer 120, a plurality of thin film battery cells 100A and 100B formed on the base layer, and first and second connection wirings 210 and 220 may be included.
  • the plurality of thin film battery cells 100A and 100B may include battery layers 131 to 136 and an insulating layer 140 formed on a part of the battery layer.
  • the base layer 120 may include a separation layer and a separation protective layer formed on the separation layer.
  • the battery layers 131 to 136 are a positive electrode current collector 131 and a negative electrode current collector 133 formed spaced apart on the base layer 120, a positive electrode material 132 and a negative electrode respectively in contact with the positive electrode current collector and the negative electrode current collector. While opening the material 134, the electrolyte layer 135 positioned between the positive electrode material and the negative electrode material, and a part of the positive electrode current collector and the negative electrode current collector, the positive electrode current collector, the negative electrode current collector, the positive electrode material, the negative electrode material, and the electrolyte layer It may include an encapsulation layer 136 to encapsulate.
  • the detailed configuration of the base layer and the plurality of thin film battery cells may be the same as those of the first embodiment.
  • the first and second connection wirings 210 and 220 may be buried inside the insulating layer 140 instead of outside. In this case, the first and second connection wirings 210 and 220 may be connected to a part of the battery layer having no insulating layer formed thereon, that is, the positive electrode current collector 131 and the negative electrode current collector 133.
  • first and second connection wires 210 and 220 are buried in the insulating layer 140, it is not necessary to additionally form an upper protective film to protect the first and second connection wires 210 and 220. .
  • the positive electrode current collector 131 of the first thin film battery cell 100A and the negative electrode current collector 133 of the second thin film battery cell 100B adjacent to each other are connected, that is, in series.
  • the connection structure is illustrated.
  • the first and second connection wirings 210 and 220 are configured as a separate configuration from the positive electrode current collector 131 or the negative electrode current collector 133, but the first and second connection wirings 210 and 220 are configured as a positive electrode current collector ( 131) or as a part of the negative electrode current collector 133, that is, it may be formed integrally with the positive electrode current collector 131 or the negative electrode current collector 133.
  • thin film battery cells 100A to 100D are arranged in a manner such as intersecting the arrangement of the thin film battery cells 100A to 100D, that is, in a zigzag arrangement, or extending the first and second connection wirings 210 and 220. ) Can be connected in parallel. Even in such a parallel connection, some of the plurality of thin film battery cells 100A to 100D, for example, two thin film battery cells 100A to 100B or three thin film battery cells 100A to 100C, may be cut and used as necessary. . Through this, a desired battery performance can be designed and applied, and it is possible to easily respond to changes in required capacity and voltage.
  • FIG. 4 is a plan view showing another modified example of the first embodiment of the thin film battery assembly according to the present invention
  • FIG. 5 is a plan view showing a modified example of the second embodiment of the thin film battery assembly according to the present invention.
  • the thin film battery cells 100A to 100D may also be formed in a square shape, and the shape of the cell is not limited according to the design and may be formed in various ways.
  • FIG 6 shows an application example of the thin film battery assembly according to the present invention.
  • the thin film battery assembly according to the present invention may include a charging unit 400 and a discharging unit 500, and may be configured to be charged and discharged.
  • the charging unit 400 and the discharging unit 500 may be configured in the form of a connection terminal or the like.
  • the charging unit 400 and the discharging unit 500 are separated, but unlike this, the charging unit 400 and the discharging unit 500 may be configured as one connection terminal.
  • the thin film battery assembly according to the present invention can be used in products that require thin and bent characteristics such as RFID tags and smart cards.
  • the thin film battery according to the present invention has excellent bending properties and can be usefully used in flexible electronic devices.
  • the separation layer and the separation protective layer are separated by thin film battery cells, that is, a separation layer and a separation protective layer are formed for each thin film battery cell on one lower protective film 110. can do.
  • thin film battery cell 110 lower protective film
  • cathode material 133 anode current collector

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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)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention concerne un ensemble de batterie à film mince comprenant : une couche de base ; une pluralité de cellules de batterie à film mince formées sur la couche de base de manière à être espacées l'une de l'autre ; et un câblage de connexion qui relie la pluralité de cellules de batterie à film mince en série ou en parallèle. Les performances souhaitées de la batterie peuvent ainsi être conçues et utilisées.
PCT/KR2020/014268 2019-10-25 2020-10-19 Ensemble de batterie à film mince WO2021080272A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190133792A KR102524454B1 (ko) 2019-10-25 2019-10-25 박막 전지 어셈블리
KR10-2019-0133792 2019-10-25

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WO2021080272A1 true WO2021080272A1 (fr) 2021-04-29

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KR (1) KR102524454B1 (fr)
WO (1) WO2021080272A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020017790A (ko) * 2000-08-31 2002-03-07 임영우 수직 방향으로 집적된 다층 박막전지 및 그의 제조방법
US20060147778A1 (en) * 2003-03-13 2006-07-06 Yoshio Matsuzaki Solid-oxide shaped fuel cell module
JP2011513895A (ja) * 2008-02-25 2011-04-28 アライアンス フォー サステイナブル エナジー リミテッド ライアビリティ カンパニー 可撓性固体薄膜リチウムイオン電池
KR20130106965A (ko) * 2012-03-21 2013-10-01 지에스칼텍스 주식회사 고온 열처리가 가능한 플렉시블 박막전지 및 이의 제조방법
US20150084157A1 (en) * 2013-09-26 2015-03-26 Infineon Technologies Ag Electronic structure, a battery structure, and a method for manufacturing an electronic structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020017790A (ko) * 2000-08-31 2002-03-07 임영우 수직 방향으로 집적된 다층 박막전지 및 그의 제조방법
US20060147778A1 (en) * 2003-03-13 2006-07-06 Yoshio Matsuzaki Solid-oxide shaped fuel cell module
JP2011513895A (ja) * 2008-02-25 2011-04-28 アライアンス フォー サステイナブル エナジー リミテッド ライアビリティ カンパニー 可撓性固体薄膜リチウムイオン電池
KR20130106965A (ko) * 2012-03-21 2013-10-01 지에스칼텍스 주식회사 고온 열처리가 가능한 플렉시블 박막전지 및 이의 제조방법
US20150084157A1 (en) * 2013-09-26 2015-03-26 Infineon Technologies Ag Electronic structure, a battery structure, and a method for manufacturing an electronic structure

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KR20210049464A (ko) 2021-05-06

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