WO2021080272A1 - Thin film battery assembly - Google Patents

Thin film battery assembly 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
Other languages
French (fr)
Korean (ko)
Inventor
최용석
김태봉
송관욱
Original Assignee
동우 화인켐 주식회사
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Publication of WO2021080272A1 publication Critical patent/WO2021080272A1/en

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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

Abstract

A thin film battery assembly of the present invention comprises: a base layer; a plurality of thin film battery cells formed on the base layer so as to be spaced apart from each other; and connection wiring connecting the plurality of thin film battery cells in series or parallel. Thus, desired battery performance can be designed and used.

Description

박막 전지 어셈블리Thin film battery assembly
본 발명은 박막 전지에 관한 것이다. 상세하게는, 본 발명은 원하는 전지 성능을 설계하여 사용할 수 있는 박막 전지 어셈블리에 관한 것이다.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.
박막 전지는 소형화되는 휴대용 전자기기, 정보통신 기기 등을 구동하기 위한 초소형 전원으로 널리 이용되고 있다. 최근에는 유연성(flexibility), 저가격, 제작 용이성 등의 장점을 이용한 고분자계 박막 전지가 활발히 개발되고 있다.Thin film batteries are widely used as ultra-miniature power sources for driving miniaturized portable electronic devices, information and communication devices, and the like. In recent years, a polymer-based thin film battery has been actively developed using advantages such as flexibility, low cost, and ease of manufacture.
한국특허공개 제10-2012-0098346호는 박막전지 제조방법을 개시하고 있다. 이 방법은 내열성 고분자로 형성된 기판 상에 양극 전류 집전체 및 양극 활물질을 순차적으로 증착하는 단계, 기판에서 양극 활물질이 증착되지 않은 부분을 마스킹(masking)하는 단계, 그리고 양극 활물질에 580~950nm 파장을 갖는 광을 조사하는 단계 등을 포함하고 있다.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.
그런데, 이러한 방법으로 제조되는 종래의 박막 전지는 단일 셀을 기준으로 제조 및 사용되고 있어 다양한 용량 등이 필요한 실제 사용 환경에서는 유연하게 대응하기가 어렵다.However, since the conventional thin film battery manufactured by this method is manufactured and used on the basis of a single cell, it is difficult to flexibly respond in an actual use environment requiring various capacities.
본 발명은 종래기술의 이러한 문제점을 해결하기 위한 것이다.The present invention is to solve this problem of the prior art.
첫째, 본 발명은 박막 전지의 사용 환경에 따라 용량 등의 전지 성능을 유연하게 선택할 수 있는 박막 전지를 제공하고자 한다.First, 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.
둘째, 본 발명은 유연성(flexibility)을 높여 플렉서블 장치, 급격한 곡면 영역 등에 용이하게 적용할 수 있는 박막 전지를 제공하고자 한다.Second, 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.
이러한 목적을 달성하기 위한 본 발명의 박막 전지 어셈블리는, 기재층, 기재층 상에 이격 형성되는 복수의 박막 전지 셀, 그리고 복수의 박막 전지 셀을 직렬 및 병렬 중 어느 하나 이상으로 연결하는 연결 배선을 포함하여 구성할 수 있다.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.
박막 전지 셀은, 기재층 상에 형성되는 전지층, 전지층 상에 형성되는 절연층, 그리고 절연층을 관통하여 일측은 박막 전지 셀과 접속하고 타측은 절연층의 외부로 노출되어 연결 배선과 접속되는 복수의 콘택을 포함할 수 있다.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.
본 발명의 박막 전지 어셈블리에서, 전지층은, 기재층 상에 이격 형성되는 양극 집전체 및 음극 집전체, 양극 집전체 및 음극 집전체에 각각 접촉되는 양극재 및 음극재, 양극재 및 음극재 사이에 위치하는 전해질층, 그리고 양극 집전체 및 음극 집전체의 일부를 개방하면서 양극 집전체, 음극 집전체, 양극재, 음극재, 및 전해질층을 봉지하는 봉지층을 포함할 수 있다.In the thin film battery assembly of the present invention, 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.
본 발명의 박막 전지 어셈블리에서, 절연층은 봉지층과 양극 집전체 및 음극 집전체의 개방된 일부 영역을 덮을 수 있다.In the thin film battery assembly of the present invention, the insulating layer may cover the encapsulation layer, the positive electrode current collector, and the open partial regions of the negative electrode current collector.
본 발명의 박막 전지 어셈블리에서, 콘택은, 절연층을 관통하여 일측은 양극 집전체에 접속하고 타측은 절연층의 외부로 노출되는 제1 콘택, 그리고 절연층을 관통하여 일측은 음극 집전체에 접속하고 타측은 절연층의 외부로 노출되는 제2 콘택을 포함할 수 있다.In the thin film battery assembly of the present invention, 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. And the other side may include a second contact exposed to the outside of the insulating layer.
본 발명의 박막 전지 어셈블리에서, 연결 배선은, 복수의 박막 전지 셀의 제1 콘택이 일단에 배열되고 제2 콘택이 타단에 배열되며, 일단을 따라 제1 콘택과 접속하는 제1 연결 배선 및 타단을 따라 제2 콘택과 접속하는 제2 연결 배선을 포함할 수 있다. 이러한 구성을 통해, 복수의 박막 전지 셀은 병렬 연결될 수 있다.In the thin film battery assembly of the present invention, 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. Through this configuration, a plurality of thin film battery cells may be connected in parallel.
본 발명의 박막 전지 어셈블리에서, 연결 배선은 복수의 박막 전지 셀의 제1 콘택이 일단에 배열되고 제2 콘택이 타단에 배열되며, 제1 콘택 및 인접하는 제2 콘택을 순번으로 연결하는 연결 배선을 포함할 수 있다. 이러한 구성을 통해, 복수의 박막 전지 셀은 직렬 연결될 수 있다.In the thin film battery assembly of the present invention, the 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.
본 발명의 박막 전지 어셈블리에서, 연결 배선은 일단에서 제1 콘택 및 제2 콘택이 교번으로 배열되고, 일단의 제1 콘택 및 제2 콘택을 연결하되, 2개의 박막 전지 셀을 연결 단위로 이격되는 제1 연결 배선 및 타단의 제2 콘택 및 제1 콘택을 연결하되 2개의 박막 전지 셀을 연결 단위로 이격되고 제1 연결 배선과 교번으로 배열되는 제2 연결 배선을 포함할 수 있다. 이러한 구성을 통해, 복수의 박막 전지 셀은 직렬 연결될 수 있다.In the thin film battery assembly of the present invention, 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. Through this configuration, a plurality of thin film battery cells may be connected in series.
본 발명의 박막 전지 어셈블리에서, 기재층은 분리층과 분리층 상에 형성되는 분리 보호층을 포함할 수 있다.In the thin film battery assembly of the present invention, the base layer may include a separation layer and a separation protective layer formed on the separation layer.
본 발명의 박막 전지 어셈블리는 분리층 하부에 위치하는 하부 보호필름을 더 포함할 수 있다.The thin film battery assembly of the present invention may further include a lower protective film positioned under the separation layer.
본 발명의 박막 전지 어셈블리에서, 분리층 및 분리 보호층은 박막 전지 셀을 단위로 분리될 수 있다.In the thin film battery assembly of the present invention, the separation layer and the separation protective layer may be separated by thin film battery cells.
본 발명의 박막 전지 어셈블리는 연결 배선을 커버하는 상부 보호필름을 더 포함할 수 있다.The thin film battery assembly of the present invention may further include an upper protective film covering the connection wiring.
본 발명의 박막 전지 어셈블리는, 기재층, 기재층 상에 이격 형성되는 복수의 박막 전지 셀, 그리고 복수의 박막 전지 셀을 직렬 및 병렬 중 어느 하나 이상으로 연결하는 연결 배선을 포함할 수 있다.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.
박막 전지 셀은, 기재층 상에 형성되는 전지층과 전지층의 일부에 형성되는 절연층을 포함할 수 있다. 절연층이 형성되지 않은 전지층의 일부는 연결 배선과 접속될 수 있다.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.
본 발명의 박막 전지 어셈블리에서, 전지층은, 기재층 상에 이격 형성되는 양극 집전체 및 음극 집전체, 양극 집전체 및 음극 집전체에 각각 접촉되는 양극재 및 음극재, 양극재 및 음극재 사이에 위치하는 전해질층, 그리고 양극 집전체 및 음극 집전체의 일부를 개방하면서 양극 집전체, 음극 집전체, 양극재, 음극재, 및 전해질층을 봉지하는 봉지층을 포함할 수 있다.In the thin film battery assembly of the present invention, 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.
본 발명의 박막 전지 어셈블리에서, 절연층은 봉지층과 양극 집전체 및 음극 집전체의 개방된 일부 영역을 덮을 수 있다.In the thin film battery assembly of the present invention, the insulating layer may cover the encapsulation layer, the positive electrode current collector, and the open partial regions of the negative electrode current collector.
본 발명의 박막 전지 어셈블리에서, 절연층이 형성되지 않은 전지층의 일부는 양극 집전체 및 음극 집전체의 일부일 수 있다.In the thin film battery assembly of the present invention, 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.
본 발명의 박막 전지 어셈블리에서, 연결 배선은, 절연층 내에서 일측은 박막전지 셀의 양극 집전체에 접속하고 타측은 인접하는 박막 전지 셀의 음극 집전체 또는 양극 집전체에 접속할 수 있다.In the thin film battery assembly of the present invention, one side of the 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.
본 발명의 박막 전지 어셈블리에서, 연결 배선은, 절연층 내에서 일측은 박막전지 셀의 음극 집전체에 접속하고 타측은 인접하는 박막 전지 셀의 양극 집전체 또는 음극 집전체에 접속할 수 있다.In the thin film battery assembly of the present invention, the 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.
본 발명의 박막 전지 어셈블리에서, 연결 배선은 양극 집전체 또는 음극 집전체와 일체형일 수 있다.In the thin film battery assembly of the present invention, the connection wiring may be integral with the positive electrode current collector or the negative electrode current collector.
본 발명의 박막 전지 어셈블리에서, 기재층은 분리층과 분리층 상에 형성되는 분리 보호층을 포함할 수 있다.In the thin film battery assembly of the present invention, the base layer may include a separation layer and a separation protective layer formed on the separation layer.
본 발명의 박막 전지 어셈블리는 분리층 하부에 위치하는 하부 보호필름을 더 포함할 수 있다.The thin film battery assembly of the present invention may further include a lower protective film positioned under the separation layer.
본 발명의 박막 전지 어셈블리에서, 분리층과 분리 보호층은 박막 전지 셀을 단위로 분리될 수 있다.In the thin film battery assembly of the present invention, the separation layer and the separation protective layer may be separated by thin film battery cells.
본 발명의 박막 전지 어셈블리는 연결 배선을 커버하는 상부 보호필름을 더 포함할 수 있다.The thin film battery assembly of the present invention may further include an upper protective film covering the connection wiring.
이러한 구성을 갖는 본 발명의 박막 전지 어셈블리는, 직렬 및 병렬 중 어느 하나 이상으로 연결된 복수의 박막 전지 셀들의 일부를 원하는 전지 성능만큼 잘라서 사용할 수 있어, 필요한 용량 등에 유연하게 대응할 수 있다.In 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.
또한, 본 발명의 박막 전지 어셈블리는, 복수의 박막 전지 셀을 이격시켜 수평으로 배치함으로써, 박막 전지의 유연성을 최대화할 수 있다. 그 결과, 본 발명의 박막 전지 어셈블리는 플렉서블 장치에 쉽게 적용할 수 있으며, 나아가 에지(edge), 폴더블 전자 장치의 굴곡부 등의 급격한 곡면에도 용이하게 적용할 수 있다.In addition, in the thin film battery assembly of the present invention, the flexibility of the thin film battery can be maximized by horizontally arranging a plurality of thin film battery cells apart from each other. As a result, 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.
도 1a, 도 1b는 본 발명에 따른 박막 전지 어셈블리의 제1 실시예를 도시하는 평면도, 단면도이다.1A and 1B are plan and cross-sectional views showing a first embodiment of a thin film battery assembly according to the present invention.
도 2는 본 발명에 따른 박막 전지 어셈블리의 제1 실시예의 변형예를 도시하는 평면도이다.2 is a plan view showing a modified example of the first embodiment of the thin film battery assembly according to the present invention.
도 3a, 도3b는 본 발명에 따른 박막 전지 어셈블리의 제2 실시예를 도시하는 평면도, 단면도이다.3A and 3B are plan and cross-sectional views showing a second embodiment of a thin film battery assembly according to the present invention.
도 4는 본 발명에 따른 박막 전지 어셈블리의 제1 실시예의 변형예를 도시하는 평면도이다.4 is a plan view showing a modified example of the first embodiment of the thin film battery assembly according to the present invention.
도 5는 본 발명에 따른 박막 전지 어셈블리의 제2 실시예의 변형예를 도시하는 평면도이다.5 is a plan view showing a modified example of the second embodiment of the thin film battery assembly according to the present invention.
도 6은 본 발명에 따른 박막 전지 어셈블리의 응용예를 도시하고 있는 평면도이다.6 is a plan view showing an application example of the thin film battery assembly according to the present invention.
이하, 첨부도면을 참조하여 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1a, 도 1b는 본 발명에 따른 박막 전지 어셈블리의 제1 실시예를 도시하는 평면도, 단면도이다.1A and 1B are plan and cross-sectional views showing a first embodiment of a thin film battery assembly according to the present invention.
도 1a에 도시한 바와 같이, 본 발명에 따른 박막 전지 어셈블리는 복수의 박막 전지 셀(100A~100D), 복수의 박막 전지 셀(100A~100D)을 직렬 및 병렬 중 어느 하나 이상으로 연결하는 복수의 연결 배선(210,220), 그리고 상부 보호필름(300)을 포함하여 구성할 수 있다.1A, 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).
복수의 박막 전지 셀(100A~100D)은 소정 간격으로 이격되어 수평으로 배열될 수 있다. 박막 전지 셀(100A~100D)은 형상과 용량을 동일하게 또는 다르게 구성할 수도 있다. 복수의 박막 전지 셀(100A~100D)은 양극 집전체 또는 음극 집전체를 동일 방향으로 배열할 수도 있고, 교차시켜 즉 지그재그로 배열할 수도 있다.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. In the plurality of thin film battery cells 100A to 100D, 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.
도 1b는 도 1a의 AA'를 절단한 절단 단면도이다.1B is a cross-sectional view taken along AA′ of FIG. 1A.
도 1b에 도시한 바와 같이, 본 발명에 따른 박막 전지 어셈블리는 기재층(120), 기재층 상에 형성되는 박막 전지 셀(100A), 복수의 연결 배선(210,220)을 포함하여 구성할 수 있다. 여기서, 박막 전지 셀(100A)은 전지층(131~136), 절연층(140), 제1,2 콘택(151,152) 등을 포함할 수 있다.As shown in FIG. 1B, the thin film battery assembly according to the present invention 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. Here, 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.
기재층(120)은 박막 전지 셀(100A~100D)을 제조하는 전사 공정에서 사용될 수 있다. 전사 공정은 박막 전지 셀(100A~100D)을 캐리어 기판 상에 형성시킨 후 플렉서블 기판에 전사시키는 공정을 포함한다. 기재층(120)은 전사 공정에서 박막 전지 셀(100A~100D)을 캐리어 기판으로부터 분리하는데 사용할 수 있다.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.
기재층(120)은 유기막, 무기막 또는 유무기 복합제막으로 구성할 수 있으며, 이에 한정되지는 않는다. 무기막은 예를 들면, 금속 산화물 및 금속 질화물 중 어느 하나 이상을 포함할 수 있고, 유기막은 예를 들면, 고밀도 폴리에틸렌, 저밀도 폴리에틸렌, 폴리프로필렌, 폴리에스테르, 폴리이미드, 폴리카보네이트 등을 포함할 수 있다. 유무기 복합제막은 예를 들면, 무기 입자와 고분자의 복합제로 이루어질 수 있다. 무기 입자로는 SiO2, Al2O3, MgO, BaTiO3, ZrO2, ZnO 등이 있다.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.
기재층(120)은 공지의 코팅 방법, 예를 들어 스핀 코팅, 다이 코팅, 스프레이 코팅, 롤 코팅, 스크린 코팅, 슬릿 코팅, 딥 코팅, 그라비아 코팅 등을 통해 형성할 수 있다.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.
본 발명의 일 실시예로, 기재층(120)은 분리층 및 분리층 상에 형성되는 분리 보호층으로 구성할 수 있다. 분리층은 캐리어 기판에 직접적으로 접촉되는 부분으로, 전지층을 캐리어 기판으로부터 분리 시에 크랙이 발생하지 않고 깔끔하게 분리되도록 박리력을 조절시켜 형성되거나, 고분자 유기막을 사용하여 형성할 수 있다. 고분자 유기막은, 예를 들어, 폴리이미드(polyimide), 폴리비닐알코올(poly vinyl alcohol), 폴리아믹산(polyamic acid), 폴리아미드(polyamide), 폴리에틸렌(polyethylene), 폴리스타이렌(polystyrene), 폴리노보넨(polynorbornene), 페닐말레이미드 공중합체(phenylmaleimide copolymer), 폴리아조벤젠(polyazobenzene), 폴리페닐렌프탈아미드(polyphenylenephthalamide), 폴리에스테르(polyester), 폴리메틸 메타크릴레이트(polymethyl methacrylate), 폴리아릴레이트(polyarylate), 신나메이트(cinnamate)계 고분자, 쿠마린(coumarin)계 고분자, 프탈리미딘(phthalimidine)계 고분자, 칼콘(chalcone)계 고분자 및 방향족 아세틸렌계 고분자로 이루어진 군에서 선택된 하나 이상을 사용할 수 있다.In one embodiment of the present invention, 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.
분리 보호층은 분리층 상에 결합하여 분리층을 보호하는 것으로, 분리 과정에서 분리층 또는 박막 전지 셀(100A~100D)의 크랙을 방지할 수 있다. 분리 보호층은 유기 절연막, 고분자 수지 필름, 유무기 복합제 막 등 유연성을 가지는 재료라면 제한되지 않고 사용될 수 있다.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.
분리 보호층은 전지층에 수분 또는 산소가 침투하는 것을 방지하기 위해 단층 또는 다층으로 형성될 수 있다.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.
본 발명의 일 실시예로, 기재층(120) 하부에 하부 보호필름(110)을 형성할 수 있다.In an embodiment of the present invention, the lower protective film 110 may be formed under the base layer 120.
하부 보호필름(110)은 기재층(120)을 보호하는 필름으로서, 폴리에틸렌테레프탈레이트(PET), 폴리에틸렌나프탈레이트(PEN), 폴리프로필렌(PP), 폴리이미드(PI), 트리아세틸셀룰로오스(TAC) 등의 플렉서블 플라스틱 필름을 포함할 수 있지만 플라스틱 필름에 한정되지 않을 수 있다.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.
기재층(120)을 분리층과 분리 보호층으로 구성하는 경우, 하부 보호필름(110)을 생략할 수 있다.When the base layer 120 is composed of a separation layer and a separation protective layer, the lower protective film 110 may be omitted.
전지층(131~136)은 전기를 방전하거나 충전하는 것으로, 양극 집전체(131)와 음극 집전체(133), 양극재(132)와 음극재(134), 전해질층(135), 봉지층(136) 등을 포함할 수 있다. 또한, 전지층(131~136)은 박막 전지의 용량, 출력, 수명, 이온전도도 등의 전지 성능을 향상시키기 위해 별도의 기능층을 추가로 포함할 수 있다. 기능층은 하나 이상의 층으로 이루어질 수 있다. 기능층의 위치는 제한되지 않는다. 전지층(131~136)은 스퍼터링, PVD, CVD, 열증착 등의 증착 방법으로 형성될 수 있으며, 보다 바람직하게는 스퍼터링으로 수행될 수 있지만 증착 방법에 제한되지 않고 수행될 수 있다.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. In addition, 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.
양극 집전체(131)와 음극 집전체(133)는 기재층(120)에서 이격 형성될 수 있다. 양극 집전체(131)와 음극 집전체(133)는 전기 전도성이 우수한 재질, 예를들어 은(Ag), 금(Au), 백금(Pt), 팔라듐(Pd), 알루미늄(Al), 니켈(Ni), 구리(Cu), 티타늄(Ti), 바나듐(V), 크롬(Cr), 철(Fe), 코발트(Co), 망간(Mn), 스테인레스 스틸 및 인코넬 중 어느 하나 이상으로 구성할 수 있다. 또한, 양극 집전체(131)와 음극 집전체(133)는 단층으로 구성할 수도 있고, 필요에 따라서는 티타늄/인코넬/백금과 같이 다층으로 구성할 수도 있다. 양극 집전체(131)와 음극 집전체(133)는 두께를 특별히 한정하지는 않으나, 예를 들어 1000 내지 2000Å의 두께로 구성할 수 있다.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. In addition, 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 Å.
양극재(132)는 일측이 양극 집전체(131)에 접하도록 형성할 수 있다. 양극재(132)로는 리튬금속산화물, 리튬금속인화물 및 리튬금속규화물 중 어느 하나 이상으로을 사용할 수 있다. 구체적으로, 양극재(132)는 리튬코발트산화물, 리튬망간산화물, 리튬니켈산화물, 리튬바나듐산화물, 리튬니켈코발트망간산화물, 리튬니켈코발트알루미늄산화물, 리튬니켈망간산화물, 리튬니오븀산화물, 리튬철규화물, 리튬망간규화물, 리튬철인화물, 리튬망간인화물 등으로 형성될 수 있으며, 이들은 단독으로 사용되거나 2종 이상 혼용될 수 있다. 특히 전기화학적 특성이 우수한 리튬코발트산화물(LiCoO2)로 형성되는 것이 바람직할 수 있다.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. As the cathode material 132, any one or more of lithium metal oxide, lithium metal phosphide, and lithium metal silicide may be used. Specifically, 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.
양극재(132)는 3~30㎛ 두께로 형성될 수 있다.The cathode material 132 may be formed to have a thickness of 3 to 30 μm.
음극재(134)는 일측이 음극 집전체(133)에 접하도록 형성할 수 있다. 음극재(134)로는 천연흑연, 인조흑연 등의 탄소질 재료, 리튬 함유 티타늄 복합 산화물, Si, Sn, Li, Zn, Mg, Cd, Ce, Ni, Fe 등의 금속류 재료, 이러한 금속류 재료로 구성된 합금류, 이러한 금속류 재료의 산화물 및 이러한 금속류와 탄소와의 복합체로 이루어진 군에서 선택된 어느 하나 이상의 물질이 사용될 수 있지만, 이에 제한되는 것은 아니다. 특히 음극재(134)는 리튬(Li)을 사용할 수 있고, 두께는 2~10㎛로 형성할 수 있다.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. As the anode material 134, 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. In particular, the negative electrode material 134 may use lithium (Li), and may have a thickness of 2 to 10 μm.
전해질층(135)은 양극재(132) 및 음극재(134) 간의 리튬이온을 이동시키고, 양극재(132) 및 음극재(134) 간의 직접적인 접촉으로 인한 쇼트를 방지하기 위한 것으로, 높은 리튬이온 전도도 및 비저항을 갖는 고체 전해질 물질로 구성할 수 있다. 고체 전해질 물질로는 LiPON(lithium phosphorous oxynitride), LiBON(lithium boron oxynitride), Li3PO4(lithium phosphate), Li2O-B2O3, Li2O-B2O3-P2O5, Li2O-B2O3-ZnO, Li2S-P2S5, Li2O-SiO2, Li2O-V2O5-SiO2, Li2SO4-Li2O-B2O3, LiSiPON(lithium silicon phosphorous oxynitride), LiSiON(lithium silicon oxynitride), LiBPON(lithium boron phosphorous oxynitride) 등을 사용할 수 있고, 이들은 단독 또는 2종 이상을 혼용하여 사용할 수 있다.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.
봉지층(136)은 양극재(132)와 음극재(134), 전해질층(135)으로 수분이 침투하는 것을 차단하는 것으로, 양극재(132)와 음극재(134), 전해질층(135)을 커버하는 형태로 구성할 수 있다. 봉지층(136)은 우레탄 (메트)아크릴레이트 올리고머, (메트)아크릴레이트 단량체, 점착성 부여 수지 및 광개시제를 포함하는 광경화성 조성물과 반응형 자외선 안정제를 포함하는 무용제형의 점착제 조성물의 경화물을 포함할 수 있지만, 이에 제한되는 것은 아니다.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.
봉지층(136)은, 전지층(131~136)과 외부의 접속을 위해, 양극 집전체(131)와 음극 집전체(133)의 일부를 개방하는 형태로 형성될 수 있다.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.
절연층(140)은 봉지층(136)을 커버하는 형태로 결합하여 전지층(131~136)을 추가로 보호할 수 있다. 절연층(140)은 봉지층(136) 외에 봉지층(136)에서 노출되는 양극 집전체(131)와 음극 집전체(133)의 일부 개방 영역까지 밀봉하는 형태로 형성할 수 있다.The insulating layer 140 may be combined to cover the encapsulation layer 136 to further protect the battery layers 131 to 136. In addition to the encapsulation layer 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.
절연층(140)은 열경화성 또는 UV 경화성 유기 고분자를 사용할 수 있는데, 예를 들어 에폭시 화합물, 아크릴 화합물, 멜라민 화합물 등을 사용할 수 있지만, 이에 제한되는 것은 아니다.The insulating layer 140 may be formed of 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.
제1,2 콘택(151,152)은 절연층(140)을 관통하여 전지층(131~136)과 연결 배선(210,220)을 연결할 수 있다.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.
제1 콘택(151)은 절연층(140)을 관통하여 일측은 양극 집전체(131)에 접속하고 타측은 절연층(140)의 외부로 노출되어 제1 연결 배선(210)에 접속할 수 있다.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.
제2 콘택(152)은 절연층(140)을 관통하여 일측은 음극 집전체(133)에 접속하고 타측은 절연층(140)의 외부로 노출되어 제2 연결 배선(220)에 접속할 수 있다.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.
도 1a,1b에 도시한 바와 같이, 제1,2 연결 배선(210,220)은 인접하는 박막 전지 셀(100A~100D)을 전기적으로 연결할 수 있다.1A and 1B, the first and second connection wirings 210 and 220 may electrically connect adjacent thin film battery cells 100A to 100D.
제1,2 연결 배선(210,220)은 박막 전지 셀(100A~100D)의 제1,2 콘택(151,152)와 접속되어 복수의 박막 전지 셀(100A~100D)을 병렬 및 직렬 중 어느 하나 이상으로 연결할 수 있다.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.
복수의 박막 전지 셀(100A~100D)을 양극 집전체(131)와 음극 집전체(133)가 같은 방향에 위치하도록 배열하는 경우, 제1 연결 배선(210)은 일단, 즉 박막 전지 셀(100A~100D)의 양극 집전체(131)들에 접속하고, 제2 연결 배선(220)은 타단, 즉 박막 전지 셀(100A~100D)의 음극 집전체(133)들에 접속하도록 구성할 수 있다. 이러한 접속 구성은, 제1,2 연결 배선(210,220)이 복수의 박막 전지 셀(100A~100D)을 병렬 연결하게 된다.When the plurality of thin film battery cells 100A to 100D are arranged so that the positive electrode current collector 131 and the negative electrode current collector 133 are positioned in the same direction, 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.
도 1a와 같은 병렬 연결에서는, 복수의 박막 전지 셀들(100A~100D) 중에서 일부, 예를 들어 2개의 박막 전지 셀(100A~100B) 또는 3개의 박막 전지 셀(100A~100C)을 필요에 따라 잘라서 사용할 수 있다. 이에 따라 원하는 전지 성능을 설계하여 적용할 수 있고, 사용 용량의 변경 등에 쉽게 대응할 수 있다.In the parallel connection as shown in FIG. 1A, 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.
본 발명의 일 실시예로, 제1,2 연결 배선(210,220)을 커버하여 보호하기 위해 상부 보호필름(300)을 더 포함할 수 있다. 구체적으로, 제1,2 연결 배선(210,220)을 커버하는 형태로 절연층(140) 및 제1,2 연결 배선(210,220) 상에 결합할 수 있다. 상부 보호필름(300)은, 하부 보호필름(110)과 같이, 폴리에틸렌테레프탈레이트(PET), 폴리에틸렌나프탈레이트(PEN), 폴리프로필렌(PP), 폴리이미드(PI), 트리아세틸셀룰로오스(TAC) 등의 플렉서블 플라스틱 필름을 사용할 수 있지만, 이에 제한되는 것은 아니다.In an embodiment of the present invention, 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. The flexible plastic film of may be used, but is not limited thereto.
도 2는 본 발명에 따른 박막 전지 어셈블리의 제1 실시예의 변형예를 도시하는 평면도이다.2 is a plan view showing a modified example of the first embodiment of the thin film battery assembly according to the present invention.
도 2에 도시한 제1 실시예의 변형예는 복수의 박막 전지 셀(100A~100D)을 직렬로 연결한 경우를 예시하고 있다.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.
도 2에서는, 제1 박막 전지 셀(100A)의 양극 집전체(131)와 인접하는 제2 박막 전지 셀(100B)의 음극 집전체(133)를 같은 방향에 위치하도록 배열할 수 있다. 이 경우, 제1 연결 배선(210)은, 제1 박막 전지 셀(100A)에서는 양극 집전체(131)에 접속하는 제1 콘택(151)에 접속하고, 인접하는 제2 박막 전지 셀(100B)에서는 음극 집전체(133)에 접속하는 제2 콘택(152)에 접속할 수 있다. 이러한 접속 구성은, 제1,2 연결 배선(210,220)이 복수의 박막 전지 셀(100A~100D)을 직렬로 연결하게 된다.In FIG. 2, 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. In this case, 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. 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 series.
또한, 이러한 연결 구성은, 제1 연결 배선(210)에서 보면, 2개의 박막 전지 셀(100A,100B)을 연결 단위로 하여 이격되는 형태, 즉 제2 박막 전지 셀(100B)과 제3 박막 전지 셀(100C)의 연결을 건너뛰고 제3 박막 전지 셀(100C)과 그 다음의 제4 박막 전지 셀(100D)에서 다시 연결되는 형태를 띌 수 있다. 제2 연결 배선(220)에서 보면, 2개의 박막 전지 셀(100B,100C)을 연결 단위로 하여 이격되는 형태, 즉 제3 박막 전지 셀(100C)과 제4 박막 전지 셀(100D)의 연결을 건너뛰고 제4 박막 전지 셀(100D)과 그 다음의 제5 박막 전지 셀에서 다시 연결되는 형태를 띌 수 있다.In addition, such a 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. As viewed from the second connection wiring 220, 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.
도 2와 같은 직렬 연결에서도, 복수의 박막 전지 셀들(100A~100D) 중에서 일부, 예를 들어 2개의 박막 전지 셀(100A~100B) 또는 3개의 박막 전지 셀(100A~100C)을 필요에 따라 잘라서 사용할 수 있다. 이를 통해 원하는 전지 성능을 설계하여 적용할 수 있고, 필요한 용량과 전압의 변경 등에 쉽게 대응할 수 있다.Even in the series connection as shown in FIG. 2, 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 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.
본 발명의 또 다른 일 변형예에 따르면, 복수의 박막 전지 셀(100A~100D)을 양극 집전체(131)와 음극 집전체(133)가 같은 방향에 위치하도록 배열하는 경우, 연결 배선은 제1 박막 전지 셀(100A)에서는 양극 집전체(131)에 접속하는 제1 콘택(151)에 접속하고, 인접하는 제2 박막 전지 셀(100B)에서는 음극 집전체(133)에 접속하는 제2 콘택(152)에 접속할 수 있다. 또한 제2 박막 전지 셀(100B)의 제2 콘택(152)에 접속한 연결 배선은 인접하는 제3 박막 전지 셀(100C)의 제1 콘택(151)과 접속될 수 있다. 이러한 연결 구성은 인접하는 박막 전지 셀끼리 제1 콘택(151) 및 제2 콘택(152)이 순번으로 연결될 수 있다. 이러한 접속 구성은, 제1,2 연결 배선(210,220)이 복수의 박막 전지 셀(100A~100D)을 직렬로 연결하게 된다.According to another modified example of the present invention, when the plurality of thin film battery cells 100A to 100D are arranged so that the positive electrode current collector 131 and the negative electrode current collector 133 are positioned in the same direction, 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). In addition, 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. In this connection configuration, the first contact 151 and the second contact 152 may be sequentially connected between adjacent thin film battery cells. 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 series.
이러한 직렬 연결에서도, 복수의 박막 전지 셀들(100A~100D) 중에서 일부, 예를 들어 2개의 박막 전지 셀(100A~100B) 또는 3개의 박막 전지 셀(100A~100C)을 필요에 따라 잘라서 사용할 수 있다. 이를 통해 원하는 전지 성능을 설계하여 적용할 수 있고, 필요한 용량과 전압의 변경 등에 쉽게 대응할 수 있다.Even in such a series 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.
도 3a,3b는 본 발명에 따른 박막 전지 어셈블리의 제2 실시예를 도시하는 평면도, 단면도이다.3A and 3B are plan and cross-sectional views showing a second embodiment of a thin film battery assembly according to the present invention.
도 3b는 도 3a의 BB'를 절단한 절단 단면도를 도시하고 있다.3B is a cross-sectional view taken along BB′ of FIG. 3A.
도 3a,3b에 도시한 바와 같이, 기재층(120), 기재층 상에 형성되는 복수의 박막 전지 셀(100A,100B), 제1,2 연결 배선(210,220)을 포함하여 구성할 수 있다. 여기서, 복수의 박막 전지 셀(100A,100B)은 전지층(131~136) 및 전지층의 일부에 형성되는 절연층(140) 등을 포함할 수 있다.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. Here, 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.
기재층(120)은 분리층 및 분리층 상에 형성되는 분리 보호층을 포함할 수 있다. 전지층(131~136)은 기재층(120) 상에 이격 형성되는 양극 집전체(131) 및 음극 집전체(133), 양극 집전체 및 음극 집전체에 각각 접촉되는 양극재(132) 및 음극재(134), 양극재 및 음극재 사이에 위치하는 전해질층(135) 및 양극 집전체 및 음극 집전체의 일부를 개방하면서, 양극 집전체, 음극 집전체, 양극재, 음극재, 및 전해질층을 봉지하는 봉지층(136)을 포함할 수 있다.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.
본 발명의 일 실시예에 따라, 기재층 및 복수의 박막 전지 셀의 상세 구성은 제1 실시예와 동일할 수 있다.According to an embodiment of the present invention, 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.
본 발명의 제2 실시예는 제1 실시예와 달리, 제1,2 연결 배선(210,220)을 외부가 아닌 절연층(140) 내부에 매몰시킬 수 있다. 이 때, 제1,2 연결 배선(210,220)은 절연층이 형성되지 않은 전지층, 즉 양극 집전체(131) 및 음극 집전체(133)의 일부와 접속될 수 있다.In the second embodiment of the present invention, unlike 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.
도 3a,3b와 같이, 제1,2 연결 배선(210,220)을 절연층(140) 내에 매몰시키면, 제1,2 연결 배선(210,220)을 보호하기 위한 상부 보호필름을 추가로 형성하지 않아도 무방하다.3A and 3B, if the 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. .
도 3a,3b의 제2 실시예는, 제1 박막 전지 셀(100A)의 양극 집전체(131)와 인접하는 제2 박막 전지 셀(100B)의 음극 집전체(133)를 연결하는, 즉 직렬 연결 구조를 예시하고 있다. 여기서, 제1,2 연결 배선(210,220)을 양극 집전체(131) 또는 음극 집전체(133)와 별개의 구성으로 구성한 것을 도시하고 있으나, 제1,2 연결 배선(210,220)은 양극 집전체(131) 또는 음극 집전체(133)의 일부로서, 즉 양극 집전체(131) 또는 음극 집전체(133)과 일체형으로 형성할 수도 있다.3A and 3B, 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. Here, it is shown that 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.
제2 실시예에서도, 박막 전지 셀(100A~100D)의 배치를 교차되게, 즉 지그재그로 배치하거나, 제1,2 연결 배선(210,220)을 연장하는 등의 방법으로, 박막 전지 셀(100A~100D)을 병렬 연결할 수 있다. 이러한 병렬 연결에서도, 복수의 박막 전지 셀들(100A~100D) 중에서 일부, 예를 들어 2개의 박막 전지 셀(100A~100B) 또는 3개의 박막 전지 셀(100A~100C)을 필요에 따라 잘라서 사용할 수 있다. 이를 통해 원하는 전지 성능을 설계하여 적용할 수 있고, 필요한 용량과 전압의 변경 등에 쉽게 대응할 수 있다.In the second embodiment as well, 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.
도 4는 본 발명에 따른 박막 전지 어셈블리의 제1 실시예의 다른 변형예를 도시하는 평면도이고, 도 5는 본 발명에 따른 박막 전지 어셈블리의 제2 실시예의 변형예를 도시하는 평면도이다.4 is a plan view showing another modified example of the first embodiment of the thin film battery assembly according to the present invention, and 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.
도 4,5에 도시한 바와 같이, 박막 전지 셀(100A~100D)을 정사각형 형태로도 구성할 수 있으며, 셀의 형상은 설계에 따라 제한되지 않고 다양하게 형성할 수 있다.As shown in FIGS. 4 and 5, 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.
도 6은 본 발명에 따른 박막 전지 어셈블리의 응용예를 도시하고 있다.6 shows an application example of the thin film battery assembly according to the present invention.
도 6에 도시한 바와 같이, 본 발명에 따른 박막 전지 어셈블리는 충전부(400), 방전부(500)를 구비하고, 충방전이 가능하게 구성할 수 있다. 충전부(400), 방전부(500)는 접속단자 등의 형태로 구성할 수 있다.6, 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.
도 6에서, 충전부(400), 방전부(500)를 분리 구성하고 있으나, 이와 달리, 충전부(400), 방전부(500)를 하나의 접속단자로 구성할 수도 있다.In FIG. 6, 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.
이에 따라 본 발명에 따른 박막 전지 어셈블리는 RFID 태그, 스마트 카드처럼 얇고 구부러지는 특성을 요구하는 제품에 사용될 수 있다. 특히, 본 발명에 따른 박막 전지는 굴곡 특성이 우수하여 플렉서블 전자 기기에 유용하게 사용될 수 있다.Accordingly, 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. In particular, the thin film battery according to the present invention has excellent bending properties and can be usefully used in flexible electronic devices.
위에서 설명한 본 발명의 박막 전지 어셈블리에서, 분리층과 분리 보호층은 박막 전지 셀을 단위로 하여 분리하여, 즉 분리층과 분리 보호층을 하나의 하부 보호필름(110) 상에서 박막 전지 셀마다 각각 형성할 수 있다.In the thin film battery assembly of the present invention described above, 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.
이상, 본 발명을 여러 실시예로서 설명하였는데, 이들은 본 발명을 예증하기 위한 것이다. 통상의 기술자라면 이러한 실시예들을 다른 형태로 변형하거나 수정할 수 있을 것이다. 그러나, 본 발명의 권리범위는 아래의 특허청구범위에 의해 정해지므로, 그러한 변형이나 수정이 본 발명의 권리범위에 포함되는 것으로 해석될 수 있다.In the above, the present invention has been described as several examples, which are intended to illustrate the present invention. Those of ordinary skill in the art will be able to transform or modify these embodiments in other forms. However, since the scope of the present invention is defined by the claims below, such modifications or modifications can be interpreted as being included in the scope of the present invention.
[부호의 설명][Explanation of code]
100A~100D : 박막 전지 셀 110 : 하부 보호필름100A~100D: thin film battery cell 110: lower protective film
120 : 기재층 131 : 양극 집전체120: base layer 131: positive electrode current collector
132 : 양극재 133 : 음극 집전체132: cathode material 133: anode current collector
134 : 음극재 135 : 전해질층134: negative electrode material 135: electrolyte layer
136 : 봉지층 140 : 절연층136: encapsulation layer 140: insulation layer
151,152 : 제1,2 콘택 210,220 : 제1,2 연결 배선151,152: first and second contacts 210,220: first and second connection wiring
300 : 상부 보호필름 400 : 충전부300: upper protective film 400: charging part
500 : 방전부500: discharge part

Claims (22)

  1. 기재층;Base layer;
    상기 기재층 상에 이격 형성되는 복수의 박막 전지 셀; 및A plurality of thin film battery cells spaced apart from each other on the base layer; And
    상기 복수의 박막 전지 셀을 직렬 및 병렬 중 어느 하나 이상으로 연결하는 연결 배선을 포함하고,Including connection wiring for connecting the plurality of thin film battery cells in any one or more of series and parallel,
    상기 복수의 박막 전지 셀은,The plurality of thin film battery cells,
    상기 기재층 상에 형성되는 전지층;A battery layer formed on the base layer;
    상기 전지층 상에 형성되는 절연층; 및An insulating layer formed on the battery layer; And
    상기 절연층을 관통하여 상기 연결 배선과 접속되는 복수의 콘택을 포함하는, 박막 전지 어셈블리.A thin film battery assembly comprising a plurality of contacts through the insulating layer and connected to the connection wiring.
  2. 제1항에 있어서, 상기 전지층은The method of claim 1, wherein the battery layer
    상기 기재층 상에 이격 형성되는 양극 집전체 및 음극 집전체;A positive electrode current collector and a negative electrode current collector formed spaced apart on the base layer;
    상기 양극 집전체 및 음극 집전체에 각각 접촉되는 양극재 및 음극재;A positive electrode material and a negative electrode material respectively contacting the positive electrode current collector and the negative electrode current collector;
    상기 양극재 및 음극재 사이에 위치하는 전해질층; 및An electrolyte layer positioned between the positive electrode material and the negative electrode material; And
    상기 양극 집전체 및 음극 집전체의 일부를 개방하면서, 상기 양극 집전체, 음극 집전체, 양극재, 음극재, 및 전해질층을 봉지하는 봉지층을 포함하는, 박막 전지 어셈블리.A thin film battery assembly comprising an encapsulation layer for sealing the positive electrode current collector, the negative electrode current collector, a positive electrode material, a negative electrode material, and an electrolyte layer while opening a part of the positive electrode current collector and the negative electrode current collector.
  3. 제2항에 있어서,The method of claim 2,
    상기 절연층은 상기 봉지층과 상기 양극 집전체 및 음극 집전체의 개방된 일부 영역을 덮는, 박막 전지 어셈블리.The insulating layer covers the encapsulation layer and some open regions of the positive electrode current collector and the negative electrode current collector.
  4. 제2항에 있어서, 상기 콘택은The method of claim 2, wherein the contact
    상기 절연층을 관통하여 일측은 상기 양극 집전체에 접속하고 타측은 상기 절연층의 외부로 노출되는 제1 콘택; 및A first contact penetrating the insulating layer to connect one side to the positive electrode current collector and the other side to be exposed to the outside of the insulating layer; And
    상기 절연층을 관통하여 일측은 상기 음극 집전체에 접속하고 타측은 상기 절연층의 외부로 노출되는 제2 콘택을 포함하는, 박막 전지 어셈블리.A thin film battery assembly comprising a second contact penetrating the insulating layer to connect one side to the negative electrode current collector and the other side to be exposed to the outside of the insulating layer.
  5. 제4항에 있어서, 상기 연결 배선은 상기 복수의 박막 전지 셀의 상기 제1 콘택이 일단에 배열되고 상기 제2 콘택이 타단에 배열되며,The method of claim 4, wherein in the connection wiring, the first contact of the plurality of thin film battery cells is arranged at one end and the second contact is arranged at the other end,
    상기 일단을 따라 상기 제1 콘택과 접속하는 제1 연결 배선; 및A first connection wire connected to the first contact along the one end; And
    상기 타단을 따라 상기 제2 콘택과 접속하는 제2 연결 배선을 포함하여 상기 복수의 박막 전지 셀을 병렬 연결하는, 박막 전지 어셈블리.A thin film battery assembly for connecting the plurality of thin film battery cells in parallel including a second connection wiring connected to the second contact along the other end.
  6. 제4항에 있어서,The method of claim 4,
    상기 연결 배선은 상기 복수의 박막 전지 셀의 상기 제1 콘택이 일단에 배열되고 상기 제2 콘택이 타단에 배열되며,In the connection wiring, the first contact of the plurality of thin film battery cells is arranged at one end and the second contact is arranged at the other end,
    상기 제1 콘택 및 인접하는 상기 제2 콘택을 순번으로 연결하는 연결 배선을 포함하여 상기 복수의 박막 전지 셀을 직렬 연결하는, 박막 전지 어셈블리.A thin film battery assembly for connecting the plurality of thin film battery cells in series, including a connection wiring for sequentially connecting the first contact and the adjacent second contact.
  7. 제4항에 있어서,The method of claim 4,
    상기 연결 배선은 일단에서 상기 제1 콘택 및 상기 제2 콘택이 교번으로 배열되고,The first contact and the second contact are alternately arranged at one end of the connection wiring,
    일단의 상기 제1 콘택 및 제2 콘택을 연결하되, 2개의 박막 전지 셀을 연결 단위로 이격되는 제1 연결 배선; 및A first connection wire connecting one end of the first contact and the second contact, and spaced apart from the two thin film battery cells in a connection unit; And
    타단의 상기 제2 콘택 및 제1 콘택을 연결하되, 2개의 박막 전지 셀을 연결 단위로 이격되고 상기 제1 연결 배선과 교번으로 배열되는 제2 연결 배선을 포함하여 상기 복수의 박막 전지 셀을 직렬 연결하는, 박막 전지 어셈블리.The second contact and the first contact of the other end are connected, and the plurality of thin film battery cells are connected in series, including a second connection wire that is spaced apart from the two thin film battery cells as a connection unit and is alternately arranged with the first connection wire. Connecting, thin film battery assembly.
  8. 제1항 내지 7항 중 어느 한 항에 있어서, 상기 기재층은The method of any one of claims 1 to 7, wherein the base layer is
    분리층; 및Separation layer; And
    상기 분리층 상에 형성되는 분리 보호층을 포함하는, 박막 전지 어셈블리.A thin film battery assembly comprising a separation protective layer formed on the separation layer.
  9. 제8항에 있어서,The method of claim 8,
    상기 분리층 하부에 위치하는 하부 보호필름을 더 포함하는, 박막 전지 어셈블리.A thin film battery assembly further comprising a lower protective film positioned under the separation layer.
  10. 제9항에 있어서, 상기 분리층 및 상기 분리 보호층은The method of claim 9, wherein the separation layer and the separation protection layer are
    상기 박막 전지 셀을 단위로 분리되는, 박막 전지 어셈블리.The thin film battery assembly is separated by a unit of the thin film battery cells.
  11. 제1항 내지 7항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 7,
    상기 연결 배선을 커버하는 상부 보호필름을 더 포함하는, 박막 전지 어셈블리.The thin film battery assembly further comprising an upper protective film covering the connection wiring.
  12. 기재층;Base layer;
    상기 기재층 상에 이격 형성되는 복수의 박막 전지 셀; 및A plurality of thin film battery cells spaced apart from each other on the base layer; And
    상기 복수의 박막 전지 셀을 직렬 및 병렬 중 어느 하나 이상으로 연결하는 연결 배선을 포함하고,Including connection wiring for connecting the plurality of thin film battery cells in any one or more of series and parallel,
    상기 복수의 박막 전지 셀은,The plurality of thin film battery cells,
    상기 기재층 상에 형성되는 전지층; 및A battery layer formed on the base layer; And
    상기 전지층의 일부에 형성되는 절연층을 포함하고, Including an insulating layer formed on a part of the battery layer,
    상기 절연층이 형성되지 않은 전지층의 일부가 상기 연결 배선과 접속되는, 박막 전지 어셈블리.A portion of the battery layer on which the insulating layer is not formed is connected to the connection wiring.
  13. 제12항에 있어서, 상기 전지층은The method of claim 12, wherein the battery layer
    상기 기재층 상에 이격 형성되는 양극 집전체 및 음극 집전체;A positive electrode current collector and a negative electrode current collector formed spaced apart on the base layer;
    상기 양극 집전체 및 음극 집전체에 각각 접촉되는 양극재 및 음극재;A positive electrode material and a negative electrode material respectively contacting the positive electrode current collector and the negative electrode current collector;
    상기 양극재 및 음극재 사이에 위치하는 전해질층; 및An electrolyte layer positioned between the positive electrode material and the negative electrode material; And
    상기 양극 집전체 및 음극 집전체의 일부를 개방하면서, 상기 양극 집전체, 음극 집전체, 양극재, 음극재, 및 전해질층을 봉지하는 봉지층을 포함하는, 박막 전지 어셈블리.A thin film battery assembly comprising an encapsulation layer for sealing the positive electrode current collector, the negative electrode current collector, a positive electrode material, a negative electrode material, and an electrolyte layer while opening a part of the positive electrode current collector and the negative electrode current collector.
  14. 제13항에 있어서,The method of claim 13,
    상기 절연층은 상기 봉지층과 상기 양극 집전체 및 음극 집전체의 개방된 일부 영역을 덮는, 박막 전지 어셈블리.The insulating layer covers the encapsulation layer and some open regions of the positive electrode current collector and the negative electrode current collector.
  15. 제13항에 있어서, 상기 절연층이 형성되지 않은 전지층의 일부는 상기 양극 집전체 및 음극 집전체의 일부인, 박막 전지 어셈블리.The thin film battery assembly of claim 13, wherein a part of the battery layer in which the insulating layer is not formed is a part of the positive electrode current collector and the negative electrode current collector.
  16. 제13항에 있어서, 상기 연결 배선은The method of claim 13, wherein the connection wiring is
    상기 절연층 내에서 일측은 상기 박막전지 셀의 양극 집전체에 접속하고 타측은 인접하는 상기 박막 전지 셀의 음극 집전체 또는 양극 집전체에 접속하는, 박막 전지 어셈블리.In the insulating layer, one side is connected to a positive electrode current collector of the thin film battery cell and the other side is connected to a negative electrode current collector or a positive electrode current collector of the adjacent thin film battery cell.
  17. 제13항에 있어서, 상기 연결 배선은The method of claim 13, wherein the connection wiring is
    상기 절연층 내에서 일측은 상기 박막전지 셀의 음극 집전체에 접속하고 타측은 인접하는 상기 박막 전지 셀의 양극 집전체 또는 음극 집전체에 접속하는, 박막 전지 어셈블리.In the insulating layer, one side is connected to a negative electrode current collector of the thin film battery cell and the other side is connected to a positive electrode current collector or a negative electrode current collector of the adjacent thin film battery cell.
  18. 제13항에 있어서, 상기 연결 배선은 양극 집전체 또는 음극 집전체와 일체형인, 박막 전지 어셈블리.14. The thin film battery assembly of claim 13, wherein the connection wiring is integral with a positive electrode current collector or a negative electrode current collector.
  19. 제12항 내지 18항 중 어느 한 항에 있어서, 상기 기재층은The method of any one of claims 12 to 18, wherein the base layer is
    분리층; 및Separation layer; And
    상기 분리층 상에 형성되는 분리 보호층을 포함하는, 박막 전지 어셈블리.A thin film battery assembly comprising a separation protective layer formed on the separation layer.
  20. 제19항에 있어서,The method of claim 19,
    상기 분리층 하부에 위치하는 하부 보호필름을 더 포함하는, 박막 전지 어셈블리.A thin film battery assembly further comprising a lower protective film positioned under the separation layer.
  21. 제20항에 있어서, 상기 분리층과 분리 보호층은 상기 박막 전지 셀을 단위로 분리되는, 박막 전지 어셈블리.The thin film battery assembly of claim 20, wherein the separation layer and the separation protective layer are separated by the thin film battery cells.
  22. 제12항 내지 18항 중 어느 한 항에 있어서,The method according to any one of claims 12 to 18,
    상기 연결 배선을 커버하는 상부 보호필름을 더 포함하는, 박막 전지 어셈블리.The thin film battery assembly further comprising an upper protective film covering the connection wiring.
PCT/KR2020/014268 2019-10-25 2020-10-19 Thin film battery assembly WO2021080272A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020017790A (en) * 2000-08-31 2002-03-07 임영우 Multi-layered Thin Film Battery Vertically Integrated and Fabrication Method thereof
US20060147778A1 (en) * 2003-03-13 2006-07-06 Yoshio Matsuzaki Solid-oxide shaped fuel cell module
JP2011513895A (en) * 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 Flexible thin film lithium ion battery
KR20130106965A (en) * 2012-03-21 2013-10-01 지에스칼텍스 주식회사 Flexible thin film battery through thermal annealing at high temperature and method of manufacturing the same
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 (en) * 2000-08-31 2002-03-07 임영우 Multi-layered Thin Film Battery Vertically Integrated and Fabrication Method thereof
US20060147778A1 (en) * 2003-03-13 2006-07-06 Yoshio Matsuzaki Solid-oxide shaped fuel cell module
JP2011513895A (en) * 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 Flexible thin film lithium ion battery
KR20130106965A (en) * 2012-03-21 2013-10-01 지에스칼텍스 주식회사 Flexible thin film battery through thermal annealing at high temperature and method of manufacturing the same
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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