WO2018190691A1 - Batterie secondaire et procédé de fabrication de batterie secondaire - Google Patents

Batterie secondaire et procédé de fabrication de batterie secondaire Download PDF

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Publication number
WO2018190691A1
WO2018190691A1 PCT/KR2018/004366 KR2018004366W WO2018190691A1 WO 2018190691 A1 WO2018190691 A1 WO 2018190691A1 KR 2018004366 W KR2018004366 W KR 2018004366W WO 2018190691 A1 WO2018190691 A1 WO 2018190691A1
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WO
WIPO (PCT)
Prior art keywords
electrode
notching
tab
secondary battery
active material
Prior art date
Application number
PCT/KR2018/004366
Other languages
English (en)
Korean (ko)
Inventor
김재웅
김형권
김상욱
Original Assignee
주식회사 엘지화학
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 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to US16/498,751 priority Critical patent/US11652232B2/en
Priority to EP18784869.2A priority patent/EP3611781A4/fr
Priority to CN201880022524.7A priority patent/CN110476273B/zh
Priority to JP2019536267A priority patent/JP2020505717A/ja
Priority claimed from KR1020180043191A external-priority patent/KR102126970B1/ko
Publication of WO2018190691A1 publication Critical patent/WO2018190691A1/fr
Priority to US18/132,719 priority patent/US11973177B2/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound 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
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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
    • H01M10/0422—Cells or battery with cylindrical casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • 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 secondary battery and a method for manufacturing the secondary battery, and more particularly, to a secondary battery and a method for manufacturing the secondary battery that can increase the mechanical strength of the electrode tab.
  • the primary battery is a consumable battery, commonly referred to as a battery.
  • the secondary battery is a rechargeable battery manufactured using a material that can be repeated a number of redox process between the current and the material, the power is charged when the reduction reaction to the material by the electric current, the oxidation reaction to the material When performed, the power is discharged. As the charge-discharge is repeatedly performed, electricity is generated.
  • the lithium ion battery of the secondary battery is coated with a positive active foil and a negative electrode conductive foil in a predetermined thickness, and the separator is interposed between the two conductive foils, so that a plurality of times in a jelly roll or cylindrical form.
  • the electrode assembly produced by winding is housed in a cylindrical or square can, a pouch, or the like, and is manufactured by sealing it.
  • Korean Unexamined Patent Publication No. 10-2012-0006389 discloses a conventional electrode assembly and a secondary battery including the same.
  • a conventional secondary battery needs to apply a metal having a low resistance to a negative electrode tab or increase a number of electrode tabs.
  • the negative electrode multi-tap structure developed by this necessity was a two-tap structure for attaching electrode tabs to the core and the outer side, or a three-tap structure for attaching the electrode tabs to the core and the outer side and the middle tab to the middle side.
  • a non-coating portion should be formed at a predetermined position in the middle of the electrode.
  • the present invention has been made to solve the above problems, the problem of the present invention is to provide a secondary battery and a method for manufacturing the secondary battery that can form a multi-tap while minimizing the unknowing.
  • an object of the present invention is to provide a secondary battery and a method for manufacturing the secondary battery that can increase the mechanical strength while forming the electrode tab by notching the electrode foil.
  • a secondary battery includes an electrode and a device including a holding part coated with an active material on an electrode current collector and an uncoated part not coated with an active material on the electrode current collector along a length direction of the electrode current collector. It extends so that the active material is not applied from the holding portion in the width direction of the electrode current collector, and when the electrode is wound, it comprises a notching tab portion formed to overlap two or more layers.
  • the notching tab portion may extend continuously from one third or more of the entire length of the holding portion.
  • the notching tab part may be cut to form a plurality of notching tabs.
  • the width of the notching tab may be 4mm ⁇ 5mm.
  • the electrode may be accommodated in the can member, and the notching tab may be bent and connected to the can member.
  • bent portion formed by bending the notching tab may be joined to the can member.
  • It may include an insulating member formed between the bent portion and the end of the electrode.
  • It may include an electrode tab attached to the uncoated portion.
  • the notching tab part may be notched while the electrode is wound to form a plurality of notching tabs, the electrode may be accommodated in a can member, and the plurality of notching tabs may be bent to overlap the electrode tab.
  • the electrode tab and the plurality of notching tabs connected to the electrode tab may be bonded to the can member together.
  • the notching lengths of the plurality of notching tabs may be 8 mm to 11 mm.
  • the notching lengths of the plurality of notching tabs may be 9 mm to 10 mm.
  • the electrode may be a cathode.
  • an electrode of the cathode may be prepared.
  • the holding part coated with the active material on the electrode current collector and the non-coating part not coated with the active material may be arranged in parallel with respect to the width direction of the electrode current collector.
  • the notching tab portion in which the active material is not coated in the width direction of the holding portion, may be notched while cutting the holding portion and the uncoated portion arranged in parallel in the longitudinal direction of the electrode current collector.
  • the notching tab portion may be notched so that the notching tab portion is not coated with an active material in the width direction of the holding portion while cutting the electrode.
  • the notching tab part may be cut by a laser.
  • the electrode assembly may be accommodated in a can member while the notching tab is bent to bond a portion bent from the notching tab to the can member.
  • the bent portion of the notching tab may be joined to the can member by welding.
  • the bent portions of the plurality of notching tabs may be overlapped with each other and simultaneously bonded to the can member.
  • the winding step may be formed to overlap the notching tab portion in two or more layers.
  • the notching tab while forming a notching tab, which is a foil tab, from an electrode foil, the notching tab is overlapped by two or more layers, thereby increasing the mechanical strength.
  • the mechanical strength of the notching tab which is a foil tab
  • the notching tab can be strengthened so that the notching tab is not broken in a bent state, so that the notching tab can be joined to the can member in a bent state, thereby ensuring the reliability of electrical connection. It is effective to increase.
  • the notching tab and the electrode tab can be joined to the can member at the same time, thereby ensuring the welding processability.
  • an insulating member can be installed between the plurality of notching tabs and the ends of the electrode assembly, thereby preventing contact between the notching tabs and the electrode assembly to improve safety. It works.
  • FIG. 1 is an exploded view showing the electrode in a deployed state according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing the state in which FIG. 1 is wound;
  • FIG. 3 is a perspective view illustrating a notching tab formed by cutting the notching tab part in FIG. 2.
  • FIG. 4 is a perspective view illustrating the can member in a state in which an electrode assembly according to an embodiment of the present invention is installed in the can member;
  • FIG. 5 is a bottom view illustrating only the electrode assembly in FIG. 4 from the bottom.
  • FIG. 6 is a flowchart sequentially illustrating a method of manufacturing a secondary battery according to an embodiment of the present invention.
  • FIG. 7 is a plan view illustrating a holding part and an uncoated part formed based on a length direction of an electrode current collector arranged in parallel with respect to a width direction of an electrode current collector, according to an exemplary embodiment.
  • FIG. 8 is a bottom view of the notch tab and the electrode tab in accordance with another embodiment of the present invention.
  • FIG. 9 is a side view of FIG. 8 from the side.
  • FIG. 1 is an exploded view showing the electrode in an unfolded state according to an embodiment of the present invention
  • Figure 2 is a perspective view showing the wound in FIG.
  • a secondary battery according to an exemplary embodiment of the present invention includes a holding part 110 coated with an active material a on an electrode current collector and an active material a on the electrode current collector.
  • the uncoated non-coated portion 120 is provided along the longitudinal direction of the electrode current collector and extends from the holding portion 110 to the active material in the width direction of the electrode current collector.
  • the electrode 100 When the electrode 100 is wound, it includes a notching tab portion 111 formed to overlap two or more layers. (Notched tab portion 111 overlapped in two layers is illustrated in FIG. 2.)
  • the foil tabs While forming the notching tab portion, which is a foil tab, from the electrode foil of the electrode current collector, the foil tabs can be stacked in two or more layers, thereby increasing the mechanical strength.
  • the electrode 100 may be any one of a cathode coated with a cathode active material and a cathode coated with an anode active material.
  • the electrode assembly 1 may be formed by stacking a cathode, a cathode, and a membrane a plurality of times so that a separator is interposed between the cathode and the anode. I can make it.
  • the electrode assembly 1 may be manufactured by winding a laminate in which a cathode, a separator, and a cathode are laminated in a jelly roll form.
  • the positive electrode may be an aluminum electrode current collector, and may include a positive electrode holding part to which the positive electrode active material is coated, and a positive electrode non-coating part to which the positive electrode active material is not coated.
  • the positive electrode active material may be a lithium-containing transition metal oxide such as LiCoO 2 , LiNiO 2 , LiMnO 2 , LiMnO 4 , or a lithium chalcogenide compound.
  • the positive electrode holding part is formed by applying a positive electrode active material to a portion of at least one surface of the aluminum electrode current collector, and the remaining portion of the aluminum electrode current collector without the positive electrode active material may be a positive electrode non-coating portion.
  • the negative electrode may be a copper electrode current collector, and may include a negative electrode holding portion to which the negative electrode active material is coated and a negative electrode non-coating portion to which the negative electrode active material is not coated.
  • the negative electrode active material may be crystalline carbon, amorphous carbon, carbon composite, carbon material such as carbon fiber, lithium metal, lithium alloy, or the like.
  • the negative electrode holding part is formed by applying a negative electrode active material to a portion of at least one surface of the copper electrode current collector, and the remaining portion of the copper electrode current collector to which the negative electrode active material is not coated may be the negative electrode non-coating portion.
  • the separator is, for example, any one selected from the group consisting of polyethylene (PE), polystyrene (PS), polypropylene (PP), and copolymers of polyethylene (PE) and polypropylene (PP). It can be prepared by coating a polyvinylidene fluoride-hexafluoropropylene copolymer (PVDF-HFP co-polymer).
  • PE polyethylene
  • PS polystyrene
  • PP polypropylene
  • PVDF-HFP co-polymer polyvinylidene fluoride-hexafluoropropylene copolymer
  • the electrode 100 of the present invention may be any one or more of a positive electrode and a negative electrode forming the electrode assembly 1, and in particular, may be any one in which a resistance reduction is required in the positive electrode or the negative electrode.
  • the cathode is described as an embodiment.
  • the electrode 100 may have a non-coated portion 120 formed at one end thereof, and an electrode tab 121 may be attached to the non-coated portion 120 formed at one end of the electrode 100.
  • the notching tab part 111 may be formed by notching the electrode 100 to extend in the width direction from the holding part 110 of the electrode 100, and the entire length of the holding part 110 of the electrode 100 is notched. It is formed so that only the electrode current collector is extended in a region corresponding to 1/3 or more of the active material (a) may not be applied.
  • the notching tab part 111 may be formed by removing only the active material a from the holding part 110 extending from the electrode 100, or the active material a may be formed in the holding part 110 region of the electrode 100. It can also be formed by extending only the electrode foil without being coated.
  • FIG. 3 is a perspective view illustrating a notching tab formed by cutting the notching tab part in FIG. 2.
  • the notching tabs 111 may be cut in a wound state to form a plurality of notching tabs 111a. As the number of notching tabs 111a increases, the resistance of all the electrode tabs decreases.
  • the width of one notching tab 111a is 4mm to 5mm. For this reason, if the width of the notching tab 111a is less than 4mm, the mechanical strength may be weak, and the width of the notching tab 111a may be reduced. This is because if it exceeds 5 mm, deformation may be difficult in the process of bonding for electrical connection with the can member.
  • notching tab 111a which is a foil tab, so that the notching tab 111a is not broken in a bent state, so that the notching tab 111a can be joined to the can member in a bent state, thereby providing reliable electrical connection. You can increase the bonding strength while securing.
  • FIG. 4 is a perspective view showing the can member in a state in which the electrode assembly according to an embodiment of the present invention is installed in the can member
  • FIG. 5 is a bottom view showing only the electrode assembly in FIG.
  • the electrode assembly 1 according to the secondary battery of the present invention is electrically connected to the can member 10 in a state in which the notching tab 111a is bent while being accommodated in the can member 10.
  • the bent portion of the notching tab 111a may be welded to the can member 10 so as to be connected.
  • the notching tab 111a is bent so that the end of the notching tab 111a is coupled to the bottom center side of the can member 10 to facilitate electrical connection, and the plurality of notching tabs 111a are electrically connected to minimize electrical resistance. can do.
  • FIG. 8 is a bottom view of the notching tab and the electrode tab bonded in accordance with another embodiment of the present invention
  • FIG. 9 is a side view of FIG.
  • the notching tab part 111 is cut from the electrode assembly 1 in which the electrode 100 is wound to form a plurality of notching tabs 111a. And a plurality of notching tabs 111a may be bent and connected to the electrode tab 121 formed at the center portion of the end of the electrode assembly 1.
  • the electrode assembly 1 is accommodated in the can member 10, and the plurality of notching tabs 111a connected to the electrode tab 121 are joined to the can member 10 together with the electrode tab 121 by welding or the like. Can be.
  • the secondary battery according to another embodiment of the present invention secures welding processability because the secondary battery is welded and joined together to the can member 10 in a state where the plurality of notching tabs 111a and the electrode tab 121 are overlapped with each other. Can be easy.
  • the notching length of the plurality of notching tabs 111a may be in the range of 8 mm to 11 mm. The reason for this is that if the notching length of the notching tab 111a is less than 8 mm, the length of the notching tab 111a is short and the notching tab 111a is bent to overlap the electrode tab 121 formed at the center portion of the end of the electrode assembly 1. It can be difficult.
  • the notching length of the notching tab 111a exceeds 11 mm, the length of the notching tab 111a becomes longer than necessary, thereby increasing the cost due to material waste and the space occupied by the notching tab 111a in the can member 10.
  • the increase in the amount of the electrolyte filled in the can member 10 may cause a decrease in capacity.
  • the notching length of the notching tab 111a may be 9 mm to 10 mm.
  • the insulating member 130 may be formed between the bent portion of the notching tab 111a and the end of the electrode assembly 1 in which the electrode 100 is wound.
  • the insulating member 130 may insulate between the notching tab 111a and the end of the electrode assembly 1 to prevent contact between the notching tab 111a and the electrode assembly 1.
  • the plurality of notching tabs 111a may be formed at an outer periphery of the end of the electrode assembly 1 so as not to interfere with the installation of the insulating member 130 at the end of the electrode assembly 1.
  • a plurality of notching tabs 111a are formed on the outer periphery of the electrode assembly to allow the insulating member 130 to be installed between the plurality of notching tabs 111a and the ends of the electrode assembly 1, thereby notching tabs 111a and the electrodes.
  • Safety can be improved by preventing contact of the assembly 1.
  • FIG. 6 is a flowchart sequentially illustrating a method of manufacturing a secondary battery according to an embodiment of the present invention.
  • the method of manufacturing a secondary battery according to an exemplary embodiment of the present invention includes a preparation step S1, a notching tab part forming step S2, a winding step S3, a notching tap forming step S4, and the like. It includes the installation step (S5).
  • the preparation step (S1) is an electrode having a holding unit 110 is coated with an active material (a) on the electrode current collector and the non-coating portion 120 is not coated with the active material (a) along the longitudinal direction of the electrode current collector Step 100 is to prepare.
  • the electrode 100 may be a cathode.
  • FIG. 7 is a plan view illustrating a holding part and an uncoated part formed based on a length direction of an electrode current collector arranged in parallel with respect to a width direction of an electrode current collector, according to an exemplary embodiment.
  • the holding part 110 and the uncoated part 120 formed based on the length direction L of the electrode current collector are referred to the width direction W of the electrode current collector. Can be arranged in parallel.
  • the notching tab portion forming step S2 may include a notching tab portion 111 extending from the electrode 100 in the width direction W of the holding portion 110 without an active material in a length 1/3 or more of the holding portion 110. Notching the electrode 100 to form a.
  • the notching tab portion 111 is notched in the electrode 100 by cutting the electrode 100 in the electrode current collector while the active material a formed in the width direction W of the holding portion 110 is not coated. It may be to form a notching tab portion 11 by notching a part.
  • the holding part 100 and the uncoated part 120 formed based on the longitudinal direction L of the electrode current collector are arranged in parallel with respect to the width direction W of the electrode current collector, the holding parts arranged in parallel. Cutting between the holding portion 110 and the other holding portion 110a arranged in parallel with the width direction W while cutting the 110 and the uncoated portion 120 in the longitudinal direction L of the electrode current collector.
  • the notched tab region not coated with the active material formed thereon may be formed to form the notched tab portion 111 in the width direction W of the holding portion 110.
  • the winding step S3 may be a step of forming an electrode assembly 1 by laminating the electrode 100 having the notched tab part 111 on the separator and the other electrode that is upper with the electrode 100.
  • the notching tabs 111 may be formed to overlap two or more layers.
  • the notching tab forming step S4 may be a step of forming a plurality of notching tabs 111a by cutting the notching tab portion 111 in the electrode assembly 1.
  • the notching tabs 111a formed by cutting the notching tabs 111 may form a state of overlapping two or more layers in the same manner as the notching tabs 111.
  • the cutting of the notching tab part 111 may maximize the working efficiency by using a laser.
  • the installation step (S5) is a step of bonding the notching tab 111a to the can member 10 by receiving the electrode assembly 1 in the can member 10.
  • the notching tab 111a is electrically connected to the can member 10, and the notching tab 111a is bent to facilitate welding. May be accommodated in the can member 10.
  • the notching tabs 111a are formed in two or more layers, the mechanical strength can be maintained even when the notching tabs 111a are bent, thereby not easily breaking.
  • the bent notched tab 111a may have an end portion directed toward the center of the bottom surface of the can member 10.
  • Coupling the bottom of the can member 10 and the notching tab 111a may allow the bent portion of the notching tab 111a to be welded to the bottom of the can member 10.
  • the bent portion of the plurality of notching tabs 111a are overlapped with each other at the end center side of the electrode assembly 1 in the installation step S5, and the end center portion of the electrode assembly 1 is overlapped with each other.
  • the electrode tab 121 may be joined to the can member 10 at the same time by welding or the like.
  • the present invention is not limited by the embodiments and drawings described above, the present invention within the claims Various implementations are possible by those skilled in the art.

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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)

Abstract

La présente invention concerne une batterie secondaire et un procédé de fabrication de batterie secondaire, la résistance mécanique d'une languette d'électrode pouvant être augmentée. De plus, la présente invention est caractérisée en ce qu'elle comprend : une électrode ayant une partie revêtue et une partie non revêtue disposée le long de la direction longitudinale d'un collecteur d'électrode, la partie revêtue ayant un matériau actif appliqué sur le collecteur d'électrode, et la partie non revêtue n'ayant pas de matériau actif appliqué sur le collecteur d'électrode ; et une partie de languette d'encochage s'étendant à partir de la partie revêtue dans la direction transversale du collecteur d'électrode de telle sorte que le matériau actif n'y est pas appliqué, la partie de languette d'encochage étant formée pour chevaucher au moins deux niveaux lorsque l'électrode est enroulée.
PCT/KR2018/004366 2017-04-14 2018-04-13 Batterie secondaire et procédé de fabrication de batterie secondaire WO2018190691A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US16/498,751 US11652232B2 (en) 2017-04-14 2018-04-13 Secondary battery and method for manufacturing the same
EP18784869.2A EP3611781A4 (fr) 2017-04-14 2018-04-13 Batterie secondaire et procédé de fabrication de batterie secondaire
CN201880022524.7A CN110476273B (zh) 2017-04-14 2018-04-13 二次电池及制造该二次电池的方法
JP2019536267A JP2020505717A (ja) 2017-04-14 2018-04-13 二次電池及びその二次電池の製造方法
US18/132,719 US11973177B2 (en) 2017-04-14 2023-04-10 Secondary battery and method for manufacturing the same

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2017-0048645 2017-04-14
KR20170048645 2017-04-14
KR1020180043191A KR102126970B1 (ko) 2017-04-14 2018-04-13 이차전지 및 그 이차전지의 제조 방법
KR10-2018-0043191 2018-04-13

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US16/498,751 A-371-Of-International US11652232B2 (en) 2017-04-14 2018-04-13 Secondary battery and method for manufacturing the same
US18/132,719 Continuation US11973177B2 (en) 2017-04-14 2023-04-10 Secondary battery and method for manufacturing the same

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WO2018190691A1 true WO2018190691A1 (fr) 2018-10-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020256023A1 (fr) * 2019-06-18 2020-12-24 株式会社村田製作所 Batterie secondaire
WO2021075710A1 (fr) * 2019-10-18 2021-04-22 주식회사 엘지에너지솔루션 Batterie secondaire et dispositif la comprenant
WO2022233640A3 (fr) * 2021-05-06 2022-12-29 Bayerische Motoren Werke Aktiengesellschaft Électrode et élément accumulateur d'énergie électrochimique

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KR20060022358A (ko) * 2004-09-07 2006-03-10 삼성에스디아이 주식회사 이차 전지와 이에 사용되는 전극 조립체
KR20120006389A (ko) 2010-07-12 2012-01-18 삼성에스디아이 주식회사 전극조립체 및 이를 포함하는 이차 전지
KR20120092367A (ko) * 2011-02-11 2012-08-21 삼성에스디아이 주식회사 전극 조립체 및 이를 이용한 이차 전지

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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