WO2021241637A1 - 単電池ユニット - Google Patents

単電池ユニット Download PDF

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Publication number
WO2021241637A1
WO2021241637A1 PCT/JP2021/020017 JP2021020017W WO2021241637A1 WO 2021241637 A1 WO2021241637 A1 WO 2021241637A1 JP 2021020017 W JP2021020017 W JP 2021020017W WO 2021241637 A1 WO2021241637 A1 WO 2021241637A1
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WO
WIPO (PCT)
Prior art keywords
current collector
electrode current
positive electrode
negative electrode
cell unit
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/JP2021/020017
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
英明 堀江
洋志 川崎
雄介 水野
卓也 末永
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.)
APB Corp
Original Assignee
APB Corp
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 APB Corp filed Critical APB Corp
Priority to EP21814552.2A priority Critical patent/EP4160754A4/en
Priority to US17/927,783 priority patent/US20230223550A1/en
Publication of WO2021241637A1 publication Critical patent/WO2021241637A1/ja
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
    • 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
    • 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
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the 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
    • 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
    • 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
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • 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
    • H01M50/50—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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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 disclosure relates to a cell cell unit and a lithium ion battery module having an assembled battery in which the cell cell unit is laminated.
  • a laminated battery in which a plurality of lithium ion batteries (cells) are laminated is used as a power source for electric vehicles and hybrid electric vehicles and a power source for portable electronic devices.
  • a lithium ion battery generally has a configuration in which a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode current collector are laminated in this order.
  • Patent Document 1 discloses a configuration in which an IC chip (integrated circuit) is arranged in a notched portion of a sheet-shaped lithium ion battery having a notch, and a lithium ion battery is used as a power source for the IC chip.
  • the planar shape of the lithium-ion battery is a hollow structure, and the IC chip is placed in the hollow portion, or the lithium-ion battery is formed into an L-shape or a U-shape and its recessed notch.
  • Patent Document 1 discloses a configuration in which an IC chip and a lithium-ion battery are electrically connected as a configuration in which an IC chip is arranged at the above-mentioned location.
  • lithium-ion batteries are expected to be applied not only to the above-mentioned electric vehicles and the like, but also to large-scale energy storage system applications for natural energy such as solar power and wind power generation.
  • One is the high energy density.
  • Patent Document 1 if a notch is formed in the main body of the lithium-ion battery (including the active material layer) as a space for arranging the IC chip, power generation per unit volume of the battery is generated. There is a risk that the density will be low, in other words, the proportion of active material in the battery will be low, limiting the increase in energy density.
  • Patent Document 1 discloses that a notch (the above-mentioned hollow structure, L-shape, U-shape, etc.) is formed in the main body of the lithium-ion battery, and the IC chip is arranged in the notch.
  • the IC chip can be placed inside the battery while effectively utilizing the wasted space existing in the cell (the area that does not contribute to power generation in the cell (the space other than the power generation area)), and the volume. None is disclosed about arranging the IC chip inside the battery while preventing a decrease in energy density.
  • electronic components can be arranged in the cell while effectively utilizing the space other than the power generation area existing in the cell, and the reduction of the volumetric energy density due to the reduction of the power generation area is prevented.
  • the purpose is to provide a cell unit that can be used.
  • One embodiment of the present disclosure is a cell unit in which a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode current collector are laminated, and is a negative electrode facing the positive electrode current collector.
  • a frame member arranged between the current collector and fixing the peripheral edge of the separator, an electronic component for detecting the state inside the cell unit, and an area between the positive electrode current collector and the negative electrode current collector. Is characterized in that electronic components are arranged and the electronic components arranged in the region are electrically connected to the positive electrode current collector and the negative electrode current collector.
  • FIG. 1 is a perspective view of a cell cell unit according to one embodiment of the present disclosure.
  • FIG. 2 is an exploded perspective view of the cell cell unit according to one embodiment of the present disclosure.
  • FIG. 3 is a perspective view of an electronic component of the cell unit according to one embodiment of the present disclosure.
  • FIG. 4 is an IV arrow view of the cell unit of FIG. 1.
  • FIG. 5 is a partially cutaway perspective view schematically showing a lithium ion battery module in which a cell battery unit according to one embodiment of the present disclosure is laminated.
  • FIG. 1 is a perspective view of a cell cell unit according to one embodiment of the present disclosure.
  • FIG. 2 is an exploded perspective view of the cell cell unit according to one embodiment of the present disclosure.
  • the cell unit 10 is laminated with a positive electrode current collector 17, a positive electrode active material layer 15, a separator 14, a negative electrode active material layer 16, and a negative electrode current collector 19.
  • the positive electrode current collector 17, the positive electrode active material layer 15, the separator 14, the negative electrode active material layer 16, and the negative electrode current collector 19 are laminated in this order from the top. It is a thing. Further, the cell unit 10 has a positive electrode 12 having a positive electrode active material layer 15 formed on the surface of a substantially rectangular flat plate-shaped positive electrode current collector 17, and a negative electrode on the surface of a substantially rectangular flat plate-shaped negative electrode current collector 19. The negative electrode 13 on which the active material layer 16 is formed is similarly laminated and formed via a substantially flat plate-shaped separator 14.
  • annular frame member 18 is arranged between the positive electrode current collector 17 and the negative electrode current collector 19.
  • the frame member 18 arranges the separator 14 inside the frame, and fixes the peripheral edge portion of the separator 14 between the positive electrode current collector 17 and the negative electrode current collector 19. Further, the frame member 18 is arranged in a ring shape so as to surround the outer periphery of the positive electrode active material layer 15 and the negative electrode active material layer 16 and the outer periphery of the separator 14. The positive electrode active material layer 15, the separator 14, and the negative electrode active material layer 16 are sealed by the positive electrode current collector 17, the negative electrode current collector 19, and the frame member 18.
  • the positive electrode current collector 17 and the negative electrode current collector 19 preferably exhibit different outer edge shapes from each other.
  • a notch is formed in either the peripheral portion of the positive electrode current collector 17 or the negative electrode current collector 19.
  • the positive electrode current collector 17 is formed with a rectangular notch 17a, and the negative electrode current collector 19 has no notch.
  • the notch is provided in the positive electrode current collector 17 will be described, and the embodiment in which the notch is provided in the negative electrode current collector 19 will be omitted.
  • the notch is provided in the negative electrode current collector 19, it can be understood as an embodiment in which the positive electrode current collector and the negative electrode current collector described below are interchanged, and this embodiment is also an embodiment of the present embodiment. included.
  • the frame member 18 may be formed with a rectangular notch 18a. At least a part of the notch 17a of the positive electrode current collector 17 and the notch 18a of the frame member 18 overlap each other, and a region A for arranging the electronic component 20 is provided in the stacking direction.
  • the notch 17a of the positive electrode current collector 17 and the notch 18a of the frame member 18 are formed at the same position when viewed in the stacking direction. By forming each notch (notch 17a, notch 18a) at the same position in this way, it goes from the positive electrode current collector 17 in the stacking direction to the negative electrode current collector 19 in one direction (in this embodiment, the notch 17a and the notch 18a).
  • the notch 17a of the positive electrode current collector 17 and the notch 18a of the frame member 18 may have the same shape or different shapes.
  • the notch 17a of the positive electrode current collector 17 and the notch 18a of the frame member 18 have the same shape.
  • the notch 17a of the positive electrode current collector 17 and the notch 18a of the frame member 18 can be formed by a simple manufacturing process.
  • the distance between the positive electrode current collector 17 and the separator 14 is adjusted according to the thickness of the active material layer of the lithium ion battery.
  • the distance between the negative electrode current collector 19 and the separator 14 is also adjusted according to the thickness of the active material layer of the lithium ion battery.
  • the positional relationship between the positive electrode current collector 17, the negative electrode current collector 19, and the separator 14 is determined so that the required spacing can be obtained.
  • the positive electrode active material 15 is preferably a coated positive electrode active material coated with a conductive auxiliary agent and a coating resin. As a result, since the periphery of the positive electrode active material is coated with the coating resin, the volume change of the electrode can be alleviated and the expansion of the electrode can be suppressed.
  • the conductive auxiliary agent is, for example, a metallic conductive auxiliary agent [aluminum, stainless steel (SUS), silver, gold, copper, titanium, etc.], a carbon-based conductive auxiliary agent [graphite and carbon black (acetylene black, ketjen black, furnace black, etc.]. , Channel black, thermal lamp black, etc.), etc.], and mixtures thereof, etc. may be mentioned.
  • a metallic conductive auxiliary agent aluminum, stainless steel (SUS), silver, gold, copper, titanium, etc.
  • a carbon-based conductive auxiliary agent [graphite and carbon black (acetylene black, ketjen black, furnace black, etc.]. , Channel black, thermal lamp black, etc.), etc.], and mixtures thereof, etc. may be mentioned.
  • the thickness of the positive electrode active material layer is not particularly limited, but is preferably 150 to 600 ⁇ m, more preferably 200 to 450 ⁇ m from the viewpoint of battery performance.
  • the negative electrode active material may be a coated negative electrode active material coated with the same conductive auxiliary agent and coating resin as the above-mentioned coated positive electrode active material.
  • the conductive auxiliary agent and the coating resin the same conductive auxiliary agent and the coating resin as the above-mentioned coated positive electrode active material can be preferably used.
  • Materials constituting the positive electrode current collector and the negative electrode current collector include metal materials such as copper, aluminum, titanium, stainless steel, nickel and alloys thereof, as well as calcined carbon, conductive polymer materials, and conductive glass. Can be mentioned. Among these materials, aluminum is preferable as the positive electrode current collector, and copper is preferable as the negative electrode current collector, from the viewpoints of weight reduction, corrosion resistance, and high conductivity.
  • polyethylene (PE), polypropylene (PP), polymethylpentene (PMP) and polycycloolefin (PCO) are preferable, and polyethylene (PE) is more preferable.
  • PE polyethylene
  • PMP polymethylpentene
  • PCO polycycloolefin
  • the connection portion 26 includes a first portion 26a extending in the stacking direction of the cell and a second portion 26b connected to the first portion 26a and extending in the surface direction of the cell. Further, the second portion 26b comes into contact with the surface of the positive electrode current collector 17, and the electronic component 20 and the current collector are electrically connected. Further, the connection portion 26 is provided with a measurement terminal 25 so as to be in contact with the surface of the current collector. As a result, it can be brought into contact with the second portion 26b of the connecting portion 26, and the measuring terminal 25 can be connected to the positive electrode current collector 17.
  • the electronic component 20 does not protrude outward in the plane direction from the outer edge of the positive electrode current collector 17 or the negative electrode current collector 19 when the cell unit 10 is viewed in a plan view, and the positive electrode current collector 17 or the negative electrode current collector 19 It is arranged along the outer edge of the.
  • the electronic component 20 is arranged along the outer edge of the negative electrode current collector 19 so as not to project outward in the plane direction from the outer edge of the negative electrode current collector 19. Thereby, the electronic component 20 can be arranged without protruding from the outer edge of the current collector.
  • the measurement terminal 24 is thermocompression bonded to the negative electrode current collector 19. Further, the measurement terminal 25 is thermocompression bonded to the positive electrode current collector 17. By thermocompression bonding the measurement terminal and each current collector in this way, the electronic component 20 can be fixed to the cell unit 10.
  • FIG. 5 is a partially cutaway perspective view schematically showing a lithium ion battery module in which a cell battery unit according to the present embodiment is laminated.
  • FIG. 5 shows an example of a lithium ion battery module in which a cell unit 10 is laminated.
  • the lithium-ion battery module 1 includes an assembled battery 50 in which a plurality of cell cell units 10 are stacked, an optical waveguide 60, and an exterior body 70.
  • a light receiving unit 80 is provided at one end of the optical waveguide 60.
  • the lithium ion battery (cell unit) in the present specification refers to a secondary battery that uses lithium ions as a charge carrier and is charged and discharged by the movement of lithium ions between the positive and negative electrodes.
  • the lithium ion battery in the present embodiment includes a bipolar battery in which an electrode is formed by applying a positive electrode or a negative electrode active material or the like to a positive electrode or negative electrode current collector, respectively, using a binder.
  • a bipolar electrode having a positive electrode layer by applying a positive electrode active material or the like using a binder on one surface of a current collector, and a negative electrode active material or the like by applying a negative electrode active material or the like using a binder on the opposite surface. Including those that make up.
  • the above-mentioned current collector can also be used as a resin current collector for a bipolar electrode having a positive electrode formed on one surface of the current collector and a negative electrode formed on the other surface. Therefore, in the laminated battery according to the present embodiment, a positive electrode is formed on one surface of the current collector (resin collector for bipolar electrode) and a negative electrode is formed on the other surface to produce a bipolar electrode. Includes a laminate (bipolar battery) formed by laminating a bipolar electrode with a separator. On the outer surface of the assembled battery 50, the electronic components 20 of each cell unit 10 are lined up in a row. Preferably, the optical waveguide 60 may be provided so as to cover the electronic components 20 arranged in a row.
  • the optical waveguide 60 includes optical signals in a plurality of electronic components (for example, an electronic component 20 provided in one cell unit 10 and an electronic component provided in a cell unit adjacent to one cell unit). Is provided so as to cover the light emitting surface of the light emitting element 22 that outputs the light. By configuring the optical waveguide 60 to cover the light emitting surface, even if a slight positional deviation occurs between the optical waveguide 60 and the light emitting element 22 when the optical waveguide 60 is installed, the inside of the optical waveguide 60 An optical signal can be introduced into the. With this configuration, the allowable amount of misalignment of the optical waveguide 60 can be increased. Further, a light receiving unit 80 is arranged at one end of the optical waveguide 60. As a result, the optical signal introduced into the optical waveguide 60 can be received by the light receiving unit 80.
  • a light receiving unit 80 is arranged at one end of the optical waveguide 60.
  • the exterior body 70 accommodates the assembled battery 50 and the optical waveguide 60. Further, in the present embodiment, a polymer metal composite film or the like is used as a member of the exterior body 70, but the present invention is not limited to this. Further, the exterior body 70 accommodates the optical waveguide 60 so that one end thereof is outside the exterior body 70. As a result, the optical signal from each cell unit 10 of the assembled battery 50 is introduced into the optical waveguide 60, and the optical signal can be received by the light receiving unit 80.
  • a conductive sheet is provided under the negative electrode current collector 19 on the lowermost surface of the assembled battery 50, and a part of the conductive sheet is pulled out from the exterior body 70 to become a lead-out wiring 59. Further, a conductive sheet is provided on the positive electrode current collector 17 on the uppermost surface of the assembled battery 50, and a part of the conductive sheet is pulled out from the exterior body 70 to become a lead-out wiring 57.
  • the conductive sheet is not particularly limited as long as it is a conductive material, and a metal material such as copper, aluminum, titanium, stainless steel, nickel and alloys thereof, and a material described as a resin current collector are appropriately selected. Can be used.
  • the space other than the power generation area existing in the cell is effectively used, and even if the electronic components are arranged in the cell unit, the volume energy density is reduced due to the reduction of the power generation area. Can be prevented.
  • the cell cell unit of the present embodiment described above may be a lithium ion battery of the embodiment described below.
  • a lithium ion battery having a cell cell in which a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode current collector are laminated in this order. It is arranged between the positive electrode current collector and the negative electrode current collector, and has a frame member for sealing the positive electrode active material layer, the separator, and the negative electrode active material layer.
  • a lithium ion battery characterized in that an electronic component for detecting a state inside the cell is arranged in the frame member.
  • the lithium ion battery according to (1) wherein the electronic component is a sensor that measures temperature, voltage, current, or acoustic emission at a predetermined portion in a cell.
  • Electronic components are arranged at a plurality of locations in the frame member provided on the outer periphery of the cell.
  • the lithium ion battery according to (1) or (2) which individually detects a state in different parts of a cell.
  • the negative electrode collector and the positive electrode collector are resin collectors, and the negative electrode collector and the positive electrode collector are directly coupled to the electronic component and electrically connected to (4).
  • the frame member is provided with a through hole for arranging the electronic component, the electronic component is arranged in the through hole, and the thickness of the frame member and the height of the electronic component are substantially the same.
  • the lithium ion battery according to any one of (1) to (9), wherein the state of each unit constituting the laminated battery is individually detected by the electronic component arranged in the frame member.
  • the above sensor monitors the potential transition and required time during charging, and when the potential rises in a shorter time than in the normal state, it is determined that deterioration has occurred in the part inside the cell measured by the sensor.
  • a method for determining deterioration of a lithium ion battery (14) The method for determining deterioration of a lithium ion battery using the lithium ion battery according to any one of (1) to (12).
  • Electronic components are arranged at a plurality of locations in the frame member provided on the outer periphery of the cell.
  • the electronic component is a sensor that measures the potential, and is characterized in that it detects potential variations in different parts of the cell and determines that deterioration has occurred in the cell when the potential variation exceeds a predetermined value. Deterioration determination method for lithium-ion batteries.
  • the cell unit according to the embodiment is a cell cell unit in which a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer, and a negative electrode current collector are laminated.
  • a frame member arranged between the positive electrode current collector and the negative electrode current collector facing the positive electrode collector and fixing the peripheral edge portion of the separator, and an electronic component for detecting the state inside the cell unit are provided.
  • the electronic component is arranged in a region between the positive electrode current collector and the negative electrode current collector, and the electronic component arranged in the region electrically meets the positive electrode current collector and the negative electrode current collector. Be connected.
  • the positive electrode current collector and the negative electrode current collector may have different outer edge shapes, and a notch may be formed in the peripheral portion of the positive electrode current collector or the negative electrode current collector.
  • the electronic component includes a main body having a substrate and an integrated circuit arranged on the substrate, and the main body is a positive electrode current collector in a plan view of the cell unit. Alternatively, it may be placed on an exposed surface of the negative electrode current collector that is exposed by forming the notch.
  • the electronic component is a positive electrode current collector in a state where the unit does not protrude outward in the plane direction from the outer edge of the positive electrode current collector or the negative electrode current collector when the cell unit is viewed in a plan view.
  • it may be arranged along the outer edge of the negative electrode current collector.
  • the electronic component may have a light emitting element that outputs an optical signal based on the state in the cell unit.
  • a battery unit in which a plurality of cell battery units according to the above embodiment are stacked is provided, and the electronic component provided in one cell battery unit in the assembled battery and a cell cell unit adjacent to the cell cell unit are used.
  • the provided electronic components are formed at the same position when viewed in the stacking direction of the cell unit, and an optical waveguide is provided so as to cover the light emitting surface of the light emitting element that outputs an optical signal in the plurality of the electronic components. You may.

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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)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
PCT/JP2021/020017 2020-05-26 2021-05-26 単電池ユニット Ceased WO2021241637A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21814552.2A EP4160754A4 (en) 2020-05-26 2021-05-26 SINGLE CELL UNIT
US17/927,783 US20230223550A1 (en) 2020-05-26 2021-05-26 Cell unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020091376A JP7161504B2 (ja) 2020-05-26 2020-05-26 単電池ユニット
JP2020-091376 2020-05-26

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WO2021241637A1 true WO2021241637A1 (ja) 2021-12-02

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US (1) US20230223550A1 (https=)
EP (1) EP4160754A4 (https=)
JP (1) JP7161504B2 (https=)
WO (1) WO2021241637A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023136353A1 (ja) * 2022-01-14 2023-07-20 Ａｐｂ株式会社 電池の検査方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7354971B2 (ja) * 2020-09-11 2023-10-03 トヨタ自動車株式会社 電池モジュール
KR102837606B1 (ko) * 2020-10-12 2025-07-22 주식회사 엘지에너지솔루션 배터리 팩 및 이를 포함하는 디바이스
KR20230018208A (ko) * 2021-07-29 2023-02-07 주식회사 엘지에너지솔루션 리튬 이차전지 및 이의 제조방법
FR3153696A1 (fr) * 2023-10-03 2025-04-04 Pellenc Energy Procédé d’association d’un microcircuit à une cellule de batterie

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11338998A (ja) 1998-05-29 1999-12-10 Nippon Telegr & Teleph Corp <Ntt> 半導体装置
JP2005251465A (ja) * 2004-03-02 2005-09-15 Nissan Motor Co Ltd バイポーラ電池
JP2006156357A (ja) * 2004-11-02 2006-06-15 Nissan Motor Co Ltd バイポーラ電池、組電池及びそれらの電池を搭載した車両
JP2008117626A (ja) * 2006-11-02 2008-05-22 Nissan Motor Co Ltd 双極型二次電池
JP2018018817A (ja) * 2016-07-19 2018-02-01 パナソニックＩｐマネジメント株式会社 電池

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130672A2 (en) * 2000-03-03 2001-09-05 Nissan Motor Co., Ltd. Battery state sensing apparatus
US7989106B2 (en) * 2004-11-02 2011-08-02 Nissan Motor Co., Ltd. Bipolar battery cell and assembled battery for a vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11338998A (ja) 1998-05-29 1999-12-10 Nippon Telegr & Teleph Corp <Ntt> 半導体装置
JP2005251465A (ja) * 2004-03-02 2005-09-15 Nissan Motor Co Ltd バイポーラ電池
JP2006156357A (ja) * 2004-11-02 2006-06-15 Nissan Motor Co Ltd バイポーラ電池、組電池及びそれらの電池を搭載した車両
JP2008117626A (ja) * 2006-11-02 2008-05-22 Nissan Motor Co Ltd 双極型二次電池
JP2018018817A (ja) * 2016-07-19 2018-02-01 パナソニックＩｐマネジメント株式会社 電池

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4160754A4

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023136353A1 (ja) * 2022-01-14 2023-07-20 Ａｐｂ株式会社 電池の検査方法

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