WO2018061458A1 - 全固体電池 - Google Patents

全固体電池 Download PDF

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Publication number
WO2018061458A1
WO2018061458A1 PCT/JP2017/027612 JP2017027612W WO2018061458A1 WO 2018061458 A1 WO2018061458 A1 WO 2018061458A1 JP 2017027612 W JP2017027612 W JP 2017027612W WO 2018061458 A1 WO2018061458 A1 WO 2018061458A1
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WO
WIPO (PCT)
Prior art keywords
positive electrode
negative electrode
current collector
electrode current
battery
Prior art date
Application number
PCT/JP2017/027612
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English (en)
French (fr)
Japanese (ja)
Inventor
竜治 河野
鈴木　修一
阿部　誠
Original Assignee
株式会社日立製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所 filed Critical 株式会社日立製作所
Priority to KR1020187034438A priority Critical patent/KR102158246B1/ko
Priority to JP2018541957A priority patent/JP6745890B2/ja
Priority to CN201780034311.1A priority patent/CN109314281B/zh
Publication of WO2018061458A1 publication Critical patent/WO2018061458A1/ja

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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
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • 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
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/70—Carriers or collectors characterised by shape or form
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • 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 an all solid state battery.
  • Patent Document 1 discloses a technique for forming an electrical parallel connection by stacking a plurality of electrode bodies in an all-solid battery and electrically connecting all the solid-state batteries in series.
  • a solid battery 10 having a laminate 19 including a first electrode layer 12, a solid electrolyte layer 13, and a second electrode layer 11, the first electrode layer 12 and the second electrode layer 11 are opposite to each other.
  • a first external terminal 22 and a second external terminal 24 formed on the second internal terminal 23 and connected to expose a part of the second internal terminal 23.
  • the second external terminal 24 is laminated.
  • Patent Document 2 discloses a battery including a first stacked battery in which a plurality of unit cells are stacked, and a second stacked battery in which a plurality of unit cells are stacked.
  • Each of the stacked batteries includes a plurality of current collectors, and each of the plurality of current collectors includes a protruding portion that protrudes in a direction orthogonal to the stacking direction of the unit cells.
  • a conductive portion made of conductive paste or a solidified paste are connected by a conductive portion made of conductive paste or a solidified paste, and an insulating portion is provided between the conductive portion and the power generation element provided in the unit cell, and the conductive portion of the first laminated battery. And a conductive part of the second laminated battery are connected by a conductive member.
  • the solid battery is engaged with each other by directly connecting the second external terminal on the upper surface of the laminate and the first external terminal on the lower surface of the laminate of another solid battery adjacent to the solid battery, Even if it is mounted on the case, it prevents the solid battery from falling off.
  • a step of providing the first external terminal and the second external terminal is required, and the productivity of the all-solid battery may be reduced.
  • the conductive portion 41 of the first multilayer battery 10 and the conductive portion 43 of the second multilayer battery 20 are connected by a conductive member 40, and the first multilayer battery 10 and the second multilayer battery 20 are connected. Are connected in series. In this case, in order to connect the 1st laminated battery 10 and the 2nd laminated battery 20 in series, the process of providing the electrically-conductive member 40 is needed, and productivity of an all-solid-state battery may fall.
  • the object of the present invention is to improve the productivity of all solid state batteries.
  • a double-sided negative electrode having a negative electrode mixture layer and a positive electrode current collector and a positive electrode mixture layer formed on one side of the positive electrode current collector, the positive electrode current collector being exposed on the other side of the positive electrode current collector
  • a single-sided positive electrode, a negative-electrode current collector, and a negative-electrode mixture layer formed on one surface of the negative-electrode current collector, and the other-side surface of the negative-electrode current collector is a single-sided negative electrode with the negative-electrode current collector exposed
  • the positive electrode current collector has a positive electrode tab
  • the negative electrode current collector has a negative electrode tab
  • the positive electrode tabs and the negative electrode tabs are joined, and the double-sided positive electrode and the double-sided negative electrode are alternately laminated.
  • an electrical parallel connection is configured in the battery unit, and the single-sided And a single-sided negative electrode are formed, and a positive-electrode current collector in a single-sided positive electrode of one battery unit of an adjacent battery unit and a negative-electrode current collector in a single-sided negative electrode of the other battery unit are connected in the stacking direction, so that a plurality of The battery unit is an all-solid-state battery with an electrical series connection.
  • FIG. 1 is a schematic diagram of an all-solid battery according to an embodiment of the present invention.
  • the all solid state battery 2000 has a plurality of battery units 1000. Adjacent battery units 1000 in the plurality of battery units 1000 are electrically connected in series in the stacking direction. Each of the plurality of battery units 1000 has a negative electrode tab 154 and a positive electrode tab 254.
  • FIG. 2 is a schematic diagram of a battery unit according to an embodiment of the present invention.
  • the battery unit 1000 includes a single-sided negative electrode 100, double-sided positive electrodes 250, an electrolyte layer 300, double-sided negative electrodes 150, and a single-sided positive electrode 200.
  • the one-side negative electrode 100 or the one-side positive electrode 200 may be referred to as a one-side electrode.
  • the both-side positive electrode 250 or the both-side negative electrode 150 may be called a both-side electrode.
  • Both-side positive electrode 250 has two positive electrode mixture layers 251 and a positive electrode current collector 252.
  • positive electrode mixture layers 251 are formed on both surfaces of positive electrode current collector 252.
  • the one-side positive electrode 200 includes a positive electrode mixture layer 251 and a positive electrode current collector 252.
  • the positive electrode mixture layer 251 is formed on one surface of the positive electrode current collector 252, and the positive electrode current collector 252 is exposed on the other surface.
  • Both-side negative electrode 150 has two negative electrode mixture layers 151 and a negative electrode current collector 152.
  • the negative electrode mixture layer 151 is formed on both surfaces of the negative electrode current collector 152.
  • the one-side negative electrode 100 includes a negative electrode mixture layer 151 and a negative electrode current collector 152.
  • the negative electrode mixture layer 151 is formed on one surface of the negative electrode current collector 152, and the negative electrode current collector 152 is exposed on the other surface.
  • the electrode body 400 is configured by laminating the positive electrodes 250 on both sides, the electrolyte layer 300, and the negative electrodes 150 on both sides.
  • a plurality of electrode bodies 400 are stacked, and the positive electrode current collectors 252 (positive electrode tabs 254) and the negative electrode current collectors 152 (negative electrode tabs 154) in the electrode bodies 400 are connected to each other. Parallel connection is configured.
  • the battery unit 1000 is configured by laminating the one-side negative electrode 100, the electrolyte layer 300, the plurality of electrode bodies 400, the electrolyte layer 300, and the one-side positive electrode 200.
  • the one-side negative electrode 100 and the one-side positive electrode 200 are formed at the end of the battery unit 1000 in the stacking direction, and the negative electrode current collector 152 and the positive electrode current collector 252 are exposed.
  • adjacent battery units 1000 can be connected in series, and an electrical multi-serial multiple parallel can be configured in the all-solid-state battery 2000.
  • the positive electrode mixture layer 251 contains at least a positive electrode active material capable of inserting and extracting Li.
  • the positive electrode active material include LiCo-based oxides, LiNi-based composite oxides, LiMn-based composite oxides, Li-Co-Ni-Mn composite oxides, LiFeP-based oxides, and the like.
  • a solid electrolyte for ensuring ionic conductivity may be included.
  • the material contained in the positive electrode mixture layer 251 is dissolved in a solvent to form a slurry, which is applied onto the positive electrode current collector 252.
  • the coating method is not particularly limited, and for example, a conventional method such as a doctor blade method, a dipping method, or a spray method can be used.
  • the positive electrode mixture layer 251 is formed through a drying process for removing the solvent and a pressing step for ensuring electron conductivity and ion conductivity in the positive electrode mixture layer 251.
  • the positive electrode current collector 252 has a positive electrode coating part 253 and a positive electrode tab 254.
  • a positive electrode mixture layer 251 is formed on the positive electrode coating portion 253.
  • the positive electrode mixture layer 251 is not formed on part or all of the positive electrode tab 254.
  • the positive electrode tab 254 is arranged to take out the generated electricity to the outside, and protrudes from one side of the both-side positive electrode 250 or the one-side positive electrode 200. In FIG. 2, the positive electrode tab 254 protrudes in the same direction as a negative electrode tab 154 described later, but may protrude from a different direction.
  • the positive electrode tab 254 and the negative electrode tab 154 protrude in the same direction, the area occupied by the positive electrode tab 254 and the negative electrode tab 154 in the battery unit 1000 can be reduced, and the energy density of the battery unit 1000 can be improved.
  • the positive electrode tab 254 or the negative electrode tab 154 may be referred to as an electrode tab.
  • Each positive electrode tab 254 in the battery unit 1000 is overlapped when the battery unit 1000 is viewed from the stacking direction.
  • the plurality of positive electrode tabs 254 in the battery unit 1000 are bonded by, for example, ultrasonic bonding.
  • other battery units 1000 do not interfere with each other during ultrasonic bonding.
  • the connection reliability is high.
  • a plurality of joined positive electrode tabs 254 in adjacent battery units 1000 are overlapped when the battery units 1000 are viewed from the stacking direction, but may not be overlapped.
  • a plurality of joined positive electrode tabs 254 in one battery unit 1000 and a plurality of joined positive electrode tabs 254 in the other battery unit 1000 are overlapped.
  • a plurality of joined positive electrode tabs 254 in one battery unit 1000 and a plurality of joined negative electrode tabs 154 in the other battery unit 1000 may be overlapped.
  • a plurality of joined positive electrode tabs 254 in adjacent battery units 1000 are overlapped when the battery unit 1000 is viewed from the stacking direction, whereby the battery unit When 1000 is stored in a resin molded body, each battery unit 1000 can be stored in the same resin molded body.
  • FIG. 1 since adjacent battery units 1000 are connected in series, it is desirable that a plurality of joined positive electrode tabs 254 in adjacent battery units 1000 are insulated.
  • the positive electrode current collector 252 an aluminum foil, an aluminum perforated foil having a hole diameter of 0.1 to 10 mm, an expanded metal, a foamed aluminum plate, or the like is used.
  • the material stainless steel, titanium, or the like can be applied in addition to aluminum.
  • the thickness of the positive electrode current collector 252 is preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the all solid state battery and the mechanical strength of the electrode, about 1 to 100 ⁇ m is desirable.
  • the negative electrode mixture layer 151 contains at least a positive electrode active material capable of inserting and extracting Li.
  • the negative electrode active material include carbon-based materials such as natural graphite, soft carbon, and amorphous carbon, Si (silicon) metal, Si alloy, lithium titanate, and lithium metal.
  • a conductive material responsible for electronic conductivity in the negative electrode mixture layer 151, a binder for ensuring adhesion between the materials in the negative electrode mixture layer 151, and further in the negative electrode mixture layer 151 A solid electrolyte for ensuring ionic conductivity may be included.
  • the material contained in the negative electrode mixture layer 151 is dissolved in a solvent to form a slurry, which is coated on the negative electrode current collector 152.
  • the coating method is not particularly limited, and for example, a conventional method such as a doctor blade method, a dipping method, or a spray method can be used. Thereafter, the negative electrode mixture layer 151 is formed through a drying process for removing the solvent and a pressing process for ensuring the electron conductivity and ion conductivity in the negative electrode mixture layer 151.
  • the negative electrode current collector 152 has a negative electrode coating part 153 and a negative electrode tab 154.
  • the configurations of the negative electrode coating portion 153 and the negative electrode tab 154 are substantially the same as the configurations of the positive electrode coating portion 253 and the positive electrode tab 254.
  • the negative electrode current collector 152 copper foil, copper perforated foil having a hole diameter of 0.1 to 10 mm, expanded metal, foamed copper plate, or the like is used.
  • the thickness of the negative electrode current collector 152 is preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the all solid state battery and the mechanical strength of the electrode, about 1 to 100 ⁇ m is desirable.
  • the electrolyte layer 300 includes a solid electrolyte.
  • solid electrolytes include organic compounds such as sulfides such as Li 10 Ge 2 PS 12 and Li 2 S—P 2 S 5 , oxides such as Li—La—Zr—O, ionic liquids and room temperature molten salts. Examples thereof include materials that do not exhibit fluidity within the operating temperature range of an all-solid battery, such as a polymer type supported on inorganic particles, a semi-solid electrolyte, and the like.
  • the electrolyte layer 300 is formed by compressing powder, mixing with a binder, applying a slurryed solid electrolyte layer to a release material, or impregnating a carrier.
  • the thickness of the electrolyte layer 300 is preferably a size of several nanometers to several millimeters from the viewpoint of ensuring the energy density of the all solid state battery, ensuring electronic insulation, and the like.
  • FIG. 3 is a schematic diagram of an all-solid battery according to an embodiment of the present invention.
  • the heat sink 500 is formed between the plurality of battery units 1000 in the stacking direction.
  • the heat radiating plate 500 By forming the heat radiating plate 500 between the plurality of battery units 1000, it is possible to reduce variations in battery characteristics due to the occurrence of temperature distribution in the battery unit 1000.
  • the material of the heat sink 500 include aluminum, copper, and stainless steel.
  • the heat sink 500 has a heat sink protrusion 510.
  • the heat sink protrusion 510 extends in the stacking direction outside the battery unit 1000.
  • the heat radiating plate protrusion 510 can detect a voltage as a serial connection terminal of the adjacent battery units 1000. Even if the heat sink 500 is configured without the heat sink protrusion 510, the heat sink protrusion 510 may extend in the in-plane direction. Since the heat sink protrusion 510 extends in the stacking direction outside the battery unit 1000, the heat sink protrusion 510 in the all-solid battery 2000 can be compared to the case where the heat sink protrusion 510 extends in the in-plane direction. The occupied area can be reduced, and the energy density of the all-solid-state battery 2000 can be improved.
  • the heat radiating plate protrusion 510 is in contact with the case 3000 via a heat conductive sheet (not shown) having a thickness of about 1 mm.
  • the heat generated in the battery unit 1000 moves to the case 3000 via the heat radiating plate 500, the heat radiating plate protrusion 510, and the heat conductive sheet, and is dissipated from the surface of the case 3000 to the outside of the case 3000.
  • the material of the case 3000 include an aluminum alloy, stainless steel, nickel / stainless steel clad material, and the like. In addition, these may be preliminarily provided with an insulating coating on the portion in contact with the all solid state battery 2000.
  • FIG. 4 is a schematic view of an all solid state battery according to an embodiment of the present invention.
  • each of a plurality of battery units 1000 has a resin molded body 600.
  • Each of the plurality of battery units 1000 is housed in a resin molded body 600.
  • the resin molded body 600 is formed with electrode tab gaps 610 through which the plurality of bonded negative electrode tabs 154 and the bonded plurality of positive electrode tabs 254 pass when the plurality of battery units 1000 are accommodated.
  • Examples of the material of the resin molded body 600 include insulating resin materials such as PBT resin and PP resin.
  • the heat radiating plate 500 is formed on the bottom surface of the resin molded body 600, but a configuration without the heat radiating plate 500 on the bottom surface of the resin molded body 600 may be used.
  • the heat sink 500 is not provided on the bottom surface of the resin molded body 600, it is desirable that the bottom surface of the resin molded body 600 is hollow in order to ensure electrical series connection between a plurality of adjacent battery units 1000.
  • the resin molded body 600 is formed in each of the plurality of battery units 1000, but the plurality of battery units 1000 are formed in one resin molded body 600 by combining the resin molded bodies 600 into one. May be.
  • a space for penetrating the heat dissipation plate protrusion 510 is formed on the side surface of the resin molded body 600 in order to bring the heat dissipation plate protrusion 510 out of the battery unit 1000.
  • the heat generated in the battery unit 1000 can be released out of the all-solid-state battery 2000 via the heat sink projection 510 and the resin molded body 600.
  • FIG. 5 is a schematic diagram of an all-solid battery according to an embodiment of the present invention.
  • the thickness of the electrode current collector in the one-side electrode is made larger than the thickness of the electrode current collector in the double-sided electrode.
  • a single-side negative electrode current collector 160 is formed on the upper side of the single-side negative electrode 100, and a single-side positive electrode current collector 260 is formed on the lower portion of the single-side positive electrode 200.
  • the one-side negative electrode current collector 160 or the one-side positive electrode current collector 260 may be referred to as a one-side electrode current collector.
  • the thickness of the one-sided negative electrode current collector 160 in the one-sided negative electrode 100 is made larger than the thickness of the negative-electrode current collector 152 in the two-sided negative electrode 150. Is larger than the thickness of the positive electrode current collector 252 in the positive electrodes 250 on both sides, but the thickness of only one electrode may be changed. Also, only the electrode tab of the electrode current collector in the one-side electrode is made larger than the thickness of the electrode tab portion of the electrode current collector in the double-sided electrode, and the thickness of the electrode coating part in the one-side electrode and the electrode in the double-sided electrode You may make the thickness of a coating part the same.
  • FIG. 6 is a schematic view of an all-solid battery according to an embodiment of the present invention.
  • the one-side electrode has a plurality of electrode current collectors, and the electrode current collectors are stacked.
  • the current is distributed to the plurality of electrode tabs, the current density in the electrode tabs is relaxed, and the local temperature rise can be reduced.
  • the single-side negative electrode 100 has a plurality of negative electrode current collectors 152, and the single-side negative electrode current collector 170 is configured by stacking the negative electrode current collectors 152.
  • the single-side positive electrode 200 includes a plurality of positive electrode current collectors 252, and the single-side positive electrode stacked current collector 270 is configured by stacking the positive electrode current collectors 252.
  • ⁇ A plurality of electrode tabs in one side electrode may be bent in advance.
  • the electrode tabs of the electrode current collector in both side electrodes can be used as a base for ultrasonic bonding.
  • the single-side negative electrode 100 includes a plurality of negative electrode current collectors 152, the negative electrode current collector 152 is stacked, and the single-side positive electrode 200 includes a plurality of positive electrode current collectors 252.
  • the current collectors 252 are stacked, a plurality of electrode current collectors having only one one-side electrode may be provided.
  • the number of the negative electrode current collectors 152 in the one-side negative electrode 100 and the number of the positive electrode current collectors 252 in the one-side positive electrode 200 are the same, but they may be different. From the viewpoint of thermal conductivity and electrical conductivity, the number of the positive electrode current collectors 252 in the single-side positive electrode 200 mainly made of aluminum is increased.
  • the negative electrode current collector 152 in the single-side negative electrode 100 It is desirable to increase the number of positive electrode current collectors 252 in one-side positive electrode 200 from the number.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Materials Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
PCT/JP2017/027612 2016-09-28 2017-07-31 全固体電池 WO2018061458A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020187034438A KR102158246B1 (ko) 2016-09-28 2017-07-31 전고체 전지
JP2018541957A JP6745890B2 (ja) 2016-09-28 2017-07-31 全固体電池
CN201780034311.1A CN109314281B (zh) 2016-09-28 2017-07-31 全固态电池

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JP2016188997 2016-09-28
JP2016-188997 2016-09-28

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WO2018061458A1 true WO2018061458A1 (ja) 2018-04-05

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JP (1) JP6745890B2 (zh)
KR (1) KR102158246B1 (zh)
CN (1) CN109314281B (zh)
WO (1) WO2018061458A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111446505A (zh) * 2019-01-16 2020-07-24 本田技研工业株式会社 全固态电池电芯
JP2021099949A (ja) * 2019-12-23 2021-07-01 トヨタ自動車株式会社 全固体電池
JP2021111589A (ja) * 2020-01-15 2021-08-02 トヨタ自動車株式会社 電池

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI790570B (zh) * 2021-03-18 2023-01-21 輝能科技股份有限公司 具散熱匣體之電池模組及其電池系統
WO2023128388A1 (en) * 2021-12-31 2023-07-06 Samsung Electro-Mechanics Co., Ltd. All-solid-state battery and manufacturing method thereof
CN114188672B (zh) * 2022-02-17 2022-05-13 天津普兰能源科技有限公司 一种全固态储能器及其制作方法

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