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WO2018190016A1 - Batterie secondaire stratifiée - Google Patents

Batterie secondaire stratifiée Download PDF

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Publication number
WO2018190016A1
WO2018190016A1 PCT/JP2018/007519 JP2018007519W WO2018190016A1 WO 2018190016 A1 WO2018190016 A1 WO 2018190016A1 JP 2018007519 W JP2018007519 W JP 2018007519W WO 2018190016 A1 WO2018190016 A1 WO 2018190016A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
secondary battery
terminal
electrode terminal
tab
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/JP2018/007519
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English (en)
Japanese (ja)
Inventor
竜治 河野
繁貴 坪内
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of WO2018190016A1 publication Critical patent/WO2018190016A1/fr
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
    • H01M50/572—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
    • 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
    • H01M10/058—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
    • H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
    • 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
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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 stacked secondary battery.
  • Patent Document 1 discloses that the current collecting terminal 15 includes a first piece 151 substantially parallel to the positive and negative plates in the stacked electrode body 10, and the positive and negative plates in the stacked electrode body 10. It is bent so as to have a second piece 152 that is substantially parallel to the stacking direction, and is formed into a side view shape (L shape) to form a penetrating portion 15P that extends from the first piece 151 to the second piece 152.
  • the current collecting lead 11 is joined to the second piece 152 of the current collecting terminal 15 at the second welding point D12, and the current collecting lead 11 stacked at the first welding point D11 in the region where the through portion 15P is formed. The effect of joining together is disclosed.
  • the distance X1 of the positive electrode current collector 16 with respect to the virtual reference line F1 passing through the center of the electrode assembly 5 and the negative electrode current collector 20 The distance Y1 is varied.
  • the distance X1 is a distance between the first virtual center line F2 passing through the center of the positive electrode current collector 16 in the width direction W2 and the virtual reference line F1.
  • the distance Y1 is a distance between the second virtual center line F3 passing through the center of the negative electrode current collector 20 in the width direction W3 and the virtual reference line F1.
  • the positive electrode current collector 16 is arranged closer to the virtual reference line F1 than the negative electrode current collector 20 by making the distance X1 shorter than the distance Y1.
  • Patent Document 1 since the joint surface between the current collecting terminal 15 and the exterior body extends in a direction perpendicular to the stacking direction of the stacked electrode body 10, space is wasted in the secondary battery. Moreover, in patent document 2, since the external terminal 7, the external terminal 8, and the battery case 3 are sealed by the surfaces perpendicular to the stacking direction of the electrodes by the insulating ring 9a, the space in the secondary battery is reduced. Waste is occurring. An object of this invention is to reduce the waste of the space in a secondary battery.
  • An electrode body configured by laminating electrodes, an electrode tab electrically connected to the electrode body, an electrode terminal electrically connected to the electrode tab, an exterior body that houses the electrode body and the electrode terminal, The electrode tab and the electrode terminal are bent, the electrode tab and the electrode terminal are connected with each other extending in the laminating direction, and the electrode terminal and the exterior body are the electrode tab and the connection surface of the electrode terminal in the electrode terminal.
  • a stacked secondary battery that is sealed on the opposite surface with the surfaces extending in the stacking direction.
  • 1 is a stacked secondary battery according to an embodiment of the present invention. It is a manufacturing process of the laminated type secondary battery which concerns on one Embodiment of this invention. It is a manufacturing process of the laminated type secondary battery which concerns on one Embodiment of this invention. It is a manufacturing process of the laminated type secondary battery which concerns on one Embodiment of this invention. It is a manufacturing process of the laminated type secondary battery which concerns on one Embodiment of this invention. It is a manufacturing process of the laminated type secondary battery which concerns on one Embodiment of this invention. 1 is a stacked secondary battery according to an embodiment of the present invention.
  • a lithium ion secondary battery will be described as an example of a stacked secondary battery.
  • the technical idea of the present invention is not only a lithium ion secondary battery but also a sodium ion secondary battery, a magnesium ion secondary battery.
  • the present invention can also be applied to batteries, aluminum ion secondary batteries, and the like.
  • FIG. 1 is a schematic view of a stacked secondary battery according to an embodiment of the present invention.
  • the stacked secondary battery 1000 includes a positive electrode 100, a negative electrode 200, a positive electrode tab 130, a negative electrode tab 230, a positive electrode terminal 150, a negative electrode terminal 250, a separator 300, a sealant 500, a bending insulating member 600, and an exterior body 700.
  • a direction in which the positive electrode 100, the negative electrode 200, and the separator 300 are stacked is a stacking direction
  • a vertical direction in the stacking direction is an in-plane direction.
  • the positive electrode 100 or the negative electrode 200 is an electrode
  • the positive electrode mixture layer 110 or the negative electrode mixture layer 210 is an electrode mixture layer
  • the positive electrode current collector 120 or the negative electrode current collector 220 is an electrode current collector
  • the tab 230 may be referred to as an electrode tab
  • the positive electrode terminal 150 or the negative electrode terminal 250 may be referred to as an electrode terminal.
  • the positive electrode 100, the separator 300, and the negative electrode 200 are laminated
  • the stacked secondary battery 1000 is configured by stacking a plurality of electrode bodies 400. By connecting the positive electrode tabs 130 to each other and the negative electrode tab 230, an electrical parallel connection is configured in the stacked secondary battery 1000.
  • An electrical series connection may be configured in the stacked secondary battery 1000. In that case, an electrical series connection is configured in the plurality of electrode bodies 400, and one positive electrode tab 130 and one negative electrode tab 230 extend from the in-plane direction from the uppermost and lowermost stages of the electrode body 400, respectively.
  • the positive electrode 100 includes a positive electrode mixture layer 110 and a positive electrode current collector 120.
  • a positive electrode mixture layer 110 is formed on both surfaces of the positive electrode current collector 120.
  • the positive electrode mixture layer 110 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 conductive material responsible for electronic conductivity in the positive electrode mixture layer 110, a binder that ensures adhesion between the materials in the positive electrode mixture layer 110, and further in the positive electrode mixture layer 110 A solid electrolyte for ensuring ionic conductivity may be included.
  • a material contained in the positive electrode mixture layer 110 is dissolved in a solvent to form a slurry, which is applied onto the positive electrode current collector 120.
  • 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 positive electrode mixture layer 110 is formed through a drying process for removing the solvent and a pressing process for ensuring the electron conductivity and ion conductivity in the positive electrode mixture layer 110.
  • the positive electrode current collector 120 is electrically connected to the positive electrode tab 130.
  • the positive electrode tab 130 is led out of the electrode body 400.
  • the positive electrode mixture layer 110 is not formed on the positive electrode tab 130.
  • the positive electrode mixture layer 110 may be formed on the positive electrode tab 130 as long as the battery performance is not adversely affected.
  • the positive electrode tab 130 is bent by the bending insulating member 600, and the bent positive electrode tab 130 extends in the stacking direction. The folded portion of the bent positive electrode tab 130 is in contact with the exterior body 700. Thereby, the size of the stacked secondary battery 1000 can be made compact.
  • an aluminum foil, an aluminum perforated foil having a hole diameter of 0.1 to 10 mm, an expanded metal, an aluminum foam plate, or the like is used.
  • the material stainless steel, titanium, or the like can be applied in addition to aluminum.
  • the thicknesses of the positive electrode current collector 120 and the positive electrode tab 130 are preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the stacked secondary battery 1000 and the mechanical strength of the electrode, about 1 to 100 ⁇ m is desirable.
  • Negative electrode 200 It has a negative electrode 200, a negative electrode mixture layer 210, and a negative electrode current collector 220. Negative electrode mixture layers 210 are formed on both surfaces of the negative electrode current collector 220.
  • the negative electrode mixture layer 210 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 metal, Si alloy, lithium titanate, and lithium metal.
  • a conductive material responsible for electronic conductivity in the negative electrode mixture layer 210, a binder that ensures adhesion between the materials in the negative electrode mixture layer 210, and further in the negative electrode mixture layer 210 A solid electrolyte for ensuring ionic conductivity may be included.
  • the material contained in the negative electrode mixture layer 210 is dissolved in a solvent to form a slurry, which is applied onto the negative electrode current collector 220.
  • 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 210 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 210.
  • the configurations of the negative electrode current collector 220 and the negative electrode tab 230 are substantially the same as the configurations of the positive electrode current collector 120 and the positive electrode tab 130.
  • the negative electrode tab 230 is also led out of the electrode body 400, but the directions led out in the in-plane directions of the positive electrode tab 130 and the negative electrode tab 230 are opposite.
  • the negative electrode current collector 220 and the negative electrode tab 230 copper foil, copper perforated foil having a hole diameter of 0.1 to 10 mm, expanded metal, foamed copper plate, etc. are used. Is also applicable.
  • the thickness of the negative electrode current collector 220 and the negative electrode tab 230 is preferably 10 nm to 1 mm. From the viewpoint of achieving both the energy density of the stacked secondary battery 1000 and the mechanical strength of the electrode, about 1 to 100 ⁇ m is desirable.
  • the separator 300 is formed between the positive electrode 100 and the negative electrode 200, and allows lithium ions to pass therethrough when the stacked secondary battery 1000 is a lithium ion secondary battery, thereby preventing a short circuit between the positive electrode 100 and the negative electrode 200.
  • a material constituting the separator 300 a microporous film, a solid electrolyte, or the like can be used.
  • the microporous film polyolefin such as polyethylene or polypropylene, glass fiber, or the like can be used.
  • the electrolyte solution is injected into the multilayer secondary battery 1000 by injecting the electrolyte solution into the multilayer secondary battery 1000 from a vacant side of the outer package 700 or a liquid injection hole. Is filled.
  • the electrolytic solution includes, for example, a solvent and a lithium salt, and serves as a medium for transmitting lithium ions between the positive electrode 100 and the negative electrode 200.
  • ethylene carbonate (EC), dimethyl carbonate (DMC), diethyl carbonate (DEC), propylene carbonate, butylene carbonate, ⁇ -butyrolactone, phosphate triester, trimethoxymethane, dioxolane, diethyl ether, sulfolane, etc. as the solvent. Can do. These materials may be used alone or in combination.
  • lithium salt LiPF 6, LiBF 4, LiClO 4, LiCF 3 SO 3, LiCF 3 CO 2, LiAsF 6, LiSbF 6, lithium bis oxalate borate (LiBOB), lithium imide salt (e.g., lithium bis (Fluorosulfonyl) imide, LiFSI) and the like can be preferably used. These lithium salts may be used alone or in combination.
  • the solid electrolyte Li 10 Ge 2 PS 12, Li 2 S-P 2 S 5 sulfide such as oxide-based, such as Li-La-Zr-O, the organic polymer Ya an ion liquid or ambient temperature molten salt
  • a semi-solid electrolyte supported on inorganic particles or the like, a gel electrolyte using a polymer gel as an electrolyte, or the like can be used.
  • the solid electrolyte serves as a medium for transmitting lithium ions between the positive electrode 100 and the negative electrode 200, and thus the above-described electrolytic solution is basically unnecessary. Can be configured in series. However, as long as an electrical short circuit in the multilayer secondary battery 1000 can be prevented, an electrolyte may be added to the multilayer secondary battery 1000 even when a solid electrolyte is used as the separator 300.
  • the separator 300 may be formed as a sheet between the positive electrode 100 and the negative electrode 200, or may be formed by coating on the electrode mixture layer. In FIG. 1, the separator 300 is formed on both surfaces of the electrode mixture layer. However, if the separator 300 is formed between the positive electrode 100 and the negative electrode 200, the separator 300 is formed on one surface of the electrode mixture layer. Also good.
  • the thickness of the separator 300 is several nanometers to several millimeters from the viewpoint of ensuring the energy density of the stacked secondary battery 1000, ensuring electronic insulation, and the like.
  • the electrode terminals include electrode terminal intermediate recesses (positive terminal intermediate recess 151, negative terminal intermediate recess 251), electrode terminal end recesses (positive terminal end recess 152, negative terminal end recess 252), electrode terminal protrusions (positive terminal). And a negative electrode terminal protrusion 253).
  • the electrode terminal is fixed to the exterior body 700 through the sealant 500 and is electrically connected to the electrode tab.
  • the electrode terminal is formed with an electrode terminal protrusion that protrudes from the exterior body 700 in the in-plane direction.
  • the protruding portion of the electrode terminal is connected to a bus bar (not shown), and the bus bar electrically connects a plurality of stacked secondary batteries 1000.
  • An electrode terminal intermediate recess is provided at an intermediate portion of the electrode terminals in the stacking direction, and the electrode terminal intermediate recess serves as a junction between the electrode terminal and the electrode tab. At the junction point, the electrode tab and the electrode terminal are connected by surfaces extending in the stacking direction.
  • the electrode terminal intermediate recess is formed above the sealant 500 in the stacking direction so that the electrode tab and the electrode terminal can be joined.
  • the electrode terminal intermediate recess in the intermediate part of the electrode terminal, the electrode terminal and the electrode tab can be easily joined.
  • a convex portion is formed on the side of the electrode terminal intermediate concave portion where the electrode body 400 is formed.
  • the electrode terminal and the electrode tab are partially joined.
  • the electrode terminal end recess is provided at the end of the electrode terminal in the stacking direction, and the sealant 500 is formed in the electrode terminal end recess.
  • the electrode terminal end concave portion By providing the electrode terminal end concave portion, the electrode terminal protruding portion can be exposed from the exterior body 700, and by simply contacting each electrode terminal protruding portion of the plurality of stacked secondary batteries 1000 in the in-plane direction, A plurality of stacked secondary batteries 1000 can be electrically connected.
  • the metal of the electrode terminal can be a metal such as aluminum, copper, nickel or stainless steel.
  • the sealant 500 is disposed between the electrode terminal end recess and the bent portion of the exterior body 700 to insulate the electrode terminal and the exterior body 700.
  • the sealant agent 500 seals and seals the interface between the surface of the electrode terminal opposite to the connection surface between the electrode terminal and the electrode tab and the inner surface of the outer periphery of the bent portion 700.
  • the length of the sealant 500 in the stacking direction is formed larger than the bent portion of the exterior body 700.
  • the sealant 500 is formed in a ring shape so as to surround the electrode terminal.
  • Sealant agent 500 is formed of an insulating material such as resin.
  • ⁇ Bending insulation member 600> In the in-plane direction, the bending insulating members 600 disposed on both sides of the electrode body 400 are integrally formed. The bending insulating member 600 is formed to bend the electrode tabs in the stacking direction, and is formed between the electrode tabs bent in the in-plane direction.
  • the lower end of the folding insulating member 600 in the stacking direction is in contact with the folded portion of the folded positive electrode tab 130.
  • the upper end portion of the bending insulating member 600 in the stacking direction is in contact with the exterior body 700.
  • the bending insulating member 600 is made of an insulating resin material such as polypropylene (PP) or polybutylene terephthalate (PBT).
  • PP polypropylene
  • PBT polybutylene terephthalate
  • the exterior body 700 houses the electrode, the separator 300, the electrode tab, the electrode terminal, the sealant 500, and the insulating member 600 for bending.
  • an opening is formed in the exterior body 700 so that the electrode terminals are exposed on the surface of the exterior body 700 where the electrode terminals are formed.
  • a folding part is provided at an end in the stacking direction of the exterior body 700, and the folding part is formed so as to be in contact with the sealant agent 500.
  • the electrode terminal and the exterior body 700 are sealed with surfaces extending in the stacking direction on the surface of the electrode terminal opposite to the electrode tab and the connection surface of the electrode terminal.
  • the exterior body 700 is formed in a tube shape, and it is desirable that the exterior body 700 has corrosion resistance to an electrolyte such as aluminum, SUS, or nickel-plated steel whose surface is insulated.
  • the exterior body 700 is preferably made of a material having excellent processability such as bending and drawing.
  • the exterior body 700 may be a heat-shrinkable tube made of an annular resin material, and may be contracted in a state where a member housed in the exterior body 700 such as the electrode body 400 is covered.
  • FIG. 2 shows a manufacturing process of the laminated secondary battery according to the embodiment of the present invention.
  • negative electrodes 200 on which separators 300 are formed and positive electrodes 100 on which separators 300 are formed are alternately stacked on a substrate 2000.
  • the electrode tab extends in the in-plane direction.
  • FIG. 3 shows a manufacturing process of the laminated secondary battery according to the embodiment of the present invention.
  • the electrode tabs are bundled by pushing the insulating member 600 for bending into the electrode tabs in the stacking direction.
  • the electrode tab has a portion bundled in the stacking direction on the side where the electrode body 400 of the bending insulating member 600 is formed and a portion bundled in the in-plane direction below the bending insulating member 600.
  • FIG. 4 shows a manufacturing process of the laminated secondary battery according to the embodiment of the present invention.
  • an electrode tab and an electrode terminal are joined, for example by ultrasonic welding.
  • Any part of the electrode tab extending in the in-plane direction may be a junction point between the electrode tab and the electrode terminal, but the portion where all the electrode tabs in the laminated secondary battery 1000 are bundled in the in-plane direction is It is desirable to be a junction point between the electrode tab and the electrode terminal.
  • a sealant 500 for sealing the electrode body 400 is formed on the electrode terminal at the lower part in the stacking direction.
  • FIG. 5 shows a manufacturing process of the laminated secondary battery according to the embodiment of the present invention.
  • the electrode tab to which the electrode terminals are joined is bent in the stacking direction. Thereby, an electrode tab and an electrode terminal will be electrically connected by the surfaces extended
  • the bent electrode tab may be brought into contact with the bending insulating member 600, or a space may be provided within a range that does not impair the performance of the stacked secondary battery 1000.
  • FIG. 6 shows a manufacturing process of the laminated secondary battery according to the embodiment of the present invention.
  • the electrode body 400 is sealed by the exterior body 700 and the electrode terminal by bending the end portion of the exterior body 700 and bonding the bent portion of the exterior body 700 and the sealant 500.
  • the sealant 500 ensures the insulation between the exterior body 700 and the electrode terminals.
  • the exterior body 700 and the electrode terminal are sealed with the surfaces extending in the stacking direction on the surface of the electrode terminal opposite to the junction point between the electrode terminal and the electrode tab.
  • FIG. 7 is a schematic view of a stacked secondary battery according to an embodiment of the present invention.
  • the multilayer secondary battery 1000 of FIG. 7 has a configuration without the folding insulating member 600 compared to the multilayer secondary battery 1000 of FIG. 1, in other words, a space is provided in the in-plane direction of the folded electrode tab. ing.
  • the configuration without the folding insulating member 600 is achieved by removing the folding insulating member 600 in the stacking direction after the step of FIG. With such a configuration, the stacked secondary battery 1000 can be reduced in weight.

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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)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

Batterie secondaire stratifiée (1000) comprenant un corps d'électrode (400) formé par stratification d'électrodes (100, 200), des languettes d'électrode (130, 230) électriquement connectées au corps d'électrode, des bornes d'électrode (150, 250) électriquement connectées aux languettes d'électrode, et un corps extérieur (700) pour le logement du corps d'électrode et des bornes d'électrode, les languettes d'électrode étant courbées; les languettes d'électrode et les bornes d'électrode étant reliées l'une à l'autre par leurs surfaces s'étendant dans la direction de stratification; et les bornes d'électrode et le corps extérieur étant scellés l'un à l'autre par leurs surfaces s'étendant dans la direction de stratification sur la surface des bornes d'électrode opposées aux surfaces de connexion des languettes d'électrode et des bornes d'électrode.
PCT/JP2018/007519 2017-04-14 2018-02-28 Batterie secondaire stratifiée Ceased WO2018190016A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017080211A JP2018181622A (ja) 2017-04-14 2017-04-14 積層型二次電池
JP2017-080211 2017-04-14

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Publication Number Publication Date
WO2018190016A1 true WO2018190016A1 (fr) 2018-10-18

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WO (1) WO2018190016A1 (fr)

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US20220376367A1 (en) * 2019-09-26 2022-11-24 Sanyo Electric Co., Ltd. Secondary battery and method of manufacturing same
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US20230136663A1 (en) * 2021-10-14 2023-05-04 Ats Automation Tooling Systems Inc. Automated battery assembly systems and related methods, including method of securing contact tabs
EP4235943A1 (fr) * 2022-02-23 2023-08-30 Shenzhen Greensun Technology Co., Ltd. Procédé et dispositif de soudage et de convergence de languettes d'élément de batterie
EP4044354A4 (fr) * 2019-10-10 2024-02-28 Murata Manufacturing Co., Ltd. Batterie secondaire
JP2024176301A (ja) * 2023-06-08 2024-12-19 プライムプラネットエナジー＆ソリューションズ株式会社 二次電池
JP2024176300A (ja) * 2023-06-08 2024-12-19 プライムプラネットエナジー＆ソリューションズ株式会社 二次電池およびその製造方法
JP2025040221A (ja) * 2023-09-11 2025-03-24 プライムプラネットエナジー＆ソリューションズ株式会社 二次電池の製造方法および二次電池
US12476334B2 (en) 2021-10-27 2025-11-18 Hithium Tech Hk Limited Manufacturing method of core assembly for battery, core assembly for battery, and battery pack

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JP7528989B2 (ja) * 2022-06-27 2024-08-06 トヨタ自動車株式会社 電池および電池モジュール
JP7632402B2 (ja) * 2022-06-27 2025-02-19 トヨタ自動車株式会社 電池
JP7743820B2 (ja) * 2022-07-28 2025-09-25 トヨタ自動車株式会社 電池
JP2024131678A (ja) * 2023-03-16 2024-09-30 株式会社村田製作所 二次電池
JP2025005497A (ja) * 2023-06-28 2025-01-17 トヨタ自動車株式会社 二次電池

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