WO2023223578A1 - デバイスおよびデバイスの製造方法 - Google Patents

デバイスおよびデバイスの製造方法 Download PDF

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Publication number
WO2023223578A1
WO2023223578A1 PCT/JP2022/042241 JP2022042241W WO2023223578A1 WO 2023223578 A1 WO2023223578 A1 WO 2023223578A1 JP 2022042241 W JP2022042241 W JP 2022042241W WO 2023223578 A1 WO2023223578 A1 WO 2023223578A1
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WO
WIPO (PCT)
Prior art keywords
power generation
main surface
generation element
solid electrolyte
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/042241
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
信 藤野
一裕 森岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to JP2024521541A priority Critical patent/JPWO2023223578A1/ja
Publication of WO2023223578A1 publication Critical patent/WO2023223578A1/ja
Priority to US18/919,481 priority patent/US20250046893A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H01M50/543—Terminals
    • 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
    • H01M10/058—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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/184—Sealing members characterised by their shape or structure
    • 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
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/477—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their shape
    • 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
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/48—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/569—Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
    • 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 first structure may have a terminal that connects the side surface and the element.
  • the power generation element 90 has a structure in which a plurality of battery cells 80 are stacked.
  • the shape of the power generation element 90 is, for example, a rectangular parallelepiped, a polygonal column, or a cylinder.
  • the power generation element 90 has, for example, a flat shape.
  • flatness means that the thickness (that is, the length in the z-axis direction) is shorter than each side of the main surface (that is, the length in each of the x-axis direction and the y-axis direction) or the maximum width. Note that in cross-sectional views such as FIG. 1, the thickness of each layer is exaggerated in order to make the layered structure of the power generation element 90 easier to understand.
  • Each of the plurality of battery cells 80 is a battery with a minimum configuration, and is also referred to as a unit cell.
  • the plurality of battery cells 80 are stacked in a series circuit (that is, electrically connected in series). In this embodiment, all battery cells 80 included in power generation element 90 are electrically connected in series. Thereby, a small-sized, high-voltage power generation element 90 can be realized.
  • the power generation element 90 is a stacked battery in which a plurality of battery cells 80 are integrated by adhesion or bonding. In the example shown in FIG. 1, the number of battery cells 80 included in the power generation element 90 is five, but the number is not limited to this. The number of battery cells 80 included in the power generation element 90 may be one, or two or more. That is, the power generation element 90 only needs to include at least one battery cell 80.
  • the electrode current collector 60, the electrode layer 10, and the first solid electrolyte of the battery cell 80 are disposed on the side surface 90c.
  • the ends of each of the layer 30, the counter electrode layer 20, and the counter electrode current collector 70 are exposed. Thereby, an electrochemical connection between the battery cell 80 and the element 110 can be formed. Components of battery cell 80 that do not participate in electrochemical connection with element 110 may not be exposed.
  • examples of sulfide solid electrolytes include Li 2 S-P 2 S 5 , Li 2 S-P 2 S 5 -LiBH 4 , Li 7 P 3 S 11 , Li 2 S-SiS 2 , Li 2 S-SiS 2 -Li 3 PO 4 , Li 2 S-SiS 2 -Li 4 SiO 4 , Li 2 SB 2 S 3 , Li 2 S-GeS 2 , Li 6 PS 5 Cl, LiSiPSCl and Li 3 N or Li 3 N( Examples include sulfides such as sulfides containing H).
  • the first solid electrolyte layer 30 contains at least a solid electrolyte, and may contain a binder material as necessary. Further, the first solid electrolyte layer 30 may include a solid electrolyte having lithium ion conductivity.
  • the length of the first structure 100 in the z-axis direction becomes shorter as the distance from the side surface 90c increases.
  • the cross-sectional shape of the first structure 100 is, for example, two sides parallel to the z-axis.
  • the length of the trapezoid in the z-axis direction becomes shorter as the distance from the side surface 90c increases. Note that at least one of the surfaces 100a and 100b does not need to be inclined.
  • the element 110 is arranged facing the side surface 90c.
  • the element 110 is electrochemically connected to one or more battery cells 80 among the plurality of battery cells 80 at the side surface 90c.
  • electrochemically connected means electronically or ionically conductively connected.
  • the number of battery cells 80 electrochemically connected to element 110 is not particularly limited.
  • the element 110 may be electrochemically connected to one battery cell 80 among the plurality of battery cells 80, or may be electrochemically connected to two or more battery cells 80.
  • each of the two or more battery cells 80 and the element 110 may be electrochemically connected, and the two or more battery cells 80
  • the two or more battery cells 80 and the element 110 may be electrochemically connected so that the voltage obtained when the cells are connected in series can be extracted.
  • the element 110 is electrochemically connected to some of the plurality of battery cells 80, but is not electrochemically connected to all the plurality of battery cells 80. May be connected.
  • the element 110 is, for example, electrochemically connected to one or more battery cells 80 via the contact surface portion 130.
  • the first structure 100 has one element 110 and one contact surface part 130, but the number of at least one of the element 110 and the contact surface part 130 may be plural.
  • the element 110 is not a member for passing current such as a terminal or wiring, but is an element that exchanges electrons or ions with the battery cell 80 and functions by the exchanged electrons or ions, for example.
  • element 110 is, for example, a reference electrode or an electronic circuit.
  • the electronic circuit include a battery information measurement circuit that measures information regarding the battery, a battery control circuit that controls the operation of the battery, and a battery management circuit that is used to manage the battery.
  • the battery information measurement circuit measures, for example, the charging/discharging history, electricity amount integration, number of charging/discharging cycles, voltage, SOC (State of Charge), deterioration, and abnormality of one or more battery cells 80 connected to the element 110. This circuit measures information regarding at least one of the following.
  • the second structure 200 does not have to include only one of the first member 210 and the second member 220.
  • step S12 the power generation element 90 and the first structure 100 are covered with the second structure 200, and the power generation element 90 and the first structure 100 are pressurized via the second structure 200. In this way, device 500 according to this embodiment is manufactured.
  • the first structure 101 includes a reference electrode portion 190 having a reference electrode 111, a second solid electrolyte layer 131, and a reference electrode current collector 170, and an insulating member 150.
  • the second solid electrolyte layer 131, the reference electrode 111, and the reference electrode current collector 170 are arranged in this order along the normal direction of the side surface 90c so as to be apart from the side surface 90c.
  • the reference electrode 111 includes, for example, at least one of metallic lithium, a lithium alloy, and a lithium compound. From the viewpoint of measurement accuracy, a material with small fluctuations in equilibrium potential may be used as the material of the reference electrode 111. Examples of materials with small fluctuations in equilibrium potential include metallic lithium, lithium alloys such as In-Li, and lithium compounds such as Li 4 Ti 5 O 12 .
  • the reference electrode current collector 170 is located on the side opposite to the second solid electrolyte layer 131 side of the reference electrode 111 and is in contact with the reference electrode 111.
  • the reference electrode current collector 170 covers the entire surface of the reference electrode 111 on the side opposite to the second solid electrolyte layer 131 side.
  • the position where the reference electrode current collector 170 contacts the reference electrode 111 is not particularly limited, and as long as the reference electrode current collector 170 has a surface other than the surface where the reference electrode 111 contacts the second solid electrolyte layer 131, It may be in contact with either side.
  • FIG. 5 is a cross-sectional view showing a schematic configuration of a device 502 according to a modification of the second embodiment.
  • FIG. 6 is a side view showing a schematic configuration of a device 502 according to a modification of the second embodiment. Note that FIG. 5 shows a cross section taken along the line VV in FIG. 6.
  • a dot pattern is attached to the insulating member 150 in order to make it easier to understand the area where the insulating member 150 is formed, but the dot pattern is attached to the actual insulating member 150. It was not intended to be.
  • the arrangement of the plurality of reference electrode parts 190 is not particularly limited, and may be arranged so that the second solid electrolyte layers 131 of each reference electrode part 190 do not come into contact with each other.
  • the plurality of reference pole parts 190 may be arranged in a line or may be arranged randomly.
  • the terminals 134a and 134c are in contact with the electrode current collector 60 and are electronically conductively connected to the electrode layer 10 via the electrode current collector 60. Further, the terminal 134b and the terminal 134d are in contact with the counter electrode current collector 70 and are electronically conductively connected to the counter electrode layer 20 via the counter electrode current collector 70.
  • the voltage of one battery cell 80 can be supplied to the electronic circuit 113 by the terminal 134a and the terminal 134b.
  • the voltage of the two battery cells 80 connected in series can be supplied to the electronic circuit 113 through the terminal 134c and the terminal 134d.
  • the voltage of three battery cells 80 connected in series may be supplied to the electronic circuit 113 through the terminal 134a and the terminal 134d. Note that the terminals 134a, 134b, 134c, and 134d may be directly connected to the electrode layer 10 or the counter electrode layer 20.
  • connection relationship between the terminals of the contact surface portion 133 and the battery cells 80 is not particularly limited, and the terminals may be connected to any position depending on the purpose.
  • the electronic circuit 113 is electronically conductively connected to some of the battery cells 80 through terminals, but all of the battery cells 80 and the terminal may have a connection. Further, the electronic circuit 113 may have an electron conductive connection with the first main surface 90a or the second main surface 90b of the power generation element 90.

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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)
  • Secondary Cells (AREA)
PCT/JP2022/042241 2022-05-18 2022-11-14 デバイスおよびデバイスの製造方法 Ceased WO2023223578A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2024521541A JPWO2023223578A1 (https=) 2022-05-18 2022-11-14
US18/919,481 US20250046893A1 (en) 2022-05-18 2024-10-18 Device and method for manufacturing device

Applications Claiming Priority (2)

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JP2022-081466 2022-05-18
JP2022081466 2022-05-18

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WO2023223578A1 true WO2023223578A1 (ja) 2023-11-23

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09237639A (ja) * 1996-02-27 1997-09-09 Casio Comput Co Ltd 電池およびその製造方法
JP2013020915A (ja) * 2011-07-14 2013-01-31 Toyota Motor Corp 固体電池
US20150349373A1 (en) * 2014-05-27 2015-12-03 Apple Inc. Thin Film Battery Structures Having Sloped Cell Sidewalls
WO2020054549A1 (ja) * 2018-09-14 2020-03-19 株式会社村田製作所 固体電池および固体電池群
JP2021005483A (ja) * 2019-06-26 2021-01-14 株式会社村田製作所 固体電池
WO2021241121A1 (ja) * 2020-05-27 2021-12-02 パナソニックＩｐマネジメント株式会社 電池、電池用外装体及び測定方法
WO2022172619A1 (ja) * 2021-02-15 2022-08-18 パナソニックＩｐマネジメント株式会社 電池および電池の製造方法
WO2022239528A1 (ja) * 2021-05-10 2022-11-17 パナソニックＩｐマネジメント株式会社 電池および電池の製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09237639A (ja) * 1996-02-27 1997-09-09 Casio Comput Co Ltd 電池およびその製造方法
JP2013020915A (ja) * 2011-07-14 2013-01-31 Toyota Motor Corp 固体電池
US20150349373A1 (en) * 2014-05-27 2015-12-03 Apple Inc. Thin Film Battery Structures Having Sloped Cell Sidewalls
WO2020054549A1 (ja) * 2018-09-14 2020-03-19 株式会社村田製作所 固体電池および固体電池群
JP2021005483A (ja) * 2019-06-26 2021-01-14 株式会社村田製作所 固体電池
WO2021241121A1 (ja) * 2020-05-27 2021-12-02 パナソニックＩｐマネジメント株式会社 電池、電池用外装体及び測定方法
WO2022172619A1 (ja) * 2021-02-15 2022-08-18 パナソニックＩｐマネジメント株式会社 電池および電池の製造方法
WO2022239528A1 (ja) * 2021-05-10 2022-11-17 パナソニックＩｐマネジメント株式会社 電池および電池の製造方法

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US20250046893A1 (en) 2025-02-06

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