WO2015046690A1 - Appareil de stratification comprenant un guide d'électrode - Google Patents

Appareil de stratification comprenant un guide d'électrode Download PDF

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Publication number
WO2015046690A1
WO2015046690A1 PCT/KR2014/002825 KR2014002825W WO2015046690A1 WO 2015046690 A1 WO2015046690 A1 WO 2015046690A1 KR 2014002825 W KR2014002825 W KR 2014002825W WO 2015046690 A1 WO2015046690 A1 WO 2015046690A1
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WO
WIPO (PCT)
Prior art keywords
electrode
electrode material
cut
guide
laminator
Prior art date
Application number
PCT/KR2014/002825
Other languages
English (en)
Korean (ko)
Inventor
노형구
박기범
김민수
박지수
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 CN201480038699.9A priority Critical patent/CN105359323B/zh
Priority to JP2016523621A priority patent/JP6210352B2/ja
Publication of WO2015046690A1 publication Critical patent/WO2015046690A1/fr

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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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • 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
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • 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

  • a lamination apparatus comprising an electrode guide.
  • lithium (ion / polymer) secondary batteries have high energy density, high operating voltage, and excellent storage and life characteristics. It is widely used as an energy source for various electronic products as well as devices.
  • the thickness of lithium secondary batteries mounted in mobile devices is required to be thinner.
  • a single-sided electrode material is used in the secondary battery manufacturing process.
  • the single-sided electrode material has a problem that the curl of the electrode material is not constant due to the thickness of the electrode material which is thinned, and the degree of curling is further increased.
  • the problem of poor electrode input in the lamination process due to curl of the electrode material is frequently generated, the speed of the overall lamination process is also slowed, the yield of the normal electrode assembly is also reduced.
  • An object of the present invention is to provide a lamination device including an electrode guide that can be effectively solved to solve the conventional problems as described above, which can effectively improve the electrode insertion failure by the curl of the electrode material.
  • Another object of the present invention is to improve electrode injection failure due to curling of the electrode material, to improve the speed of the lamination process, and to improve overall productivity and yield.
  • the present invention is located in the front end of the cutter for cutting the electrode material unloaded from the electrode material roll, the conveying means for conveying the cut electrode material, the laminating means is placed on the conveying means An electrode guide for guiding the cut electrode material into the lamination means of the laminator;
  • a lamination device including a laminator for laminating by applying heat and pressure to the cut electrode material in a state, a plurality of arms of a square plate shape having a predetermined size is spaced at a predetermined interval to one body of the square plate shape Providing the electrode guide having a shape that is connected at right angles The.
  • the size of one side in the direction in which the cut electrode material is transported in the electrode guide may be determined to have a maximum size within a limit without interference between the electrode guide, the transfer means, and the feeding means of the laminator.
  • the size of one side of the direction perpendicular to the direction in which the cut electrode material is transferred in the electrode guide may be determined based on the size of the cut electrode material or the separator material.
  • the electrode material according to an embodiment of the present invention may be a single-sided electrode material coated with an electrode only on one surface.
  • the electrode material roll may be wound so that the cross section coated with the electrode faces the inner surface and the foil layer faces the outer surface.
  • cross-sectional electrode material in which the separator material is laminated by the lamination apparatus may be used for manufacturing an R-type bicell or an L-type bicell.
  • the electrode guide according to an embodiment of the present invention may be detachable.
  • FIG. 1 is a view showing a lamination device including an electrode guide according to an embodiment of the present invention.
  • FIG. 2 is a view showing an electrode guide according to an embodiment of the present invention.
  • FIG 3 is a view showing an electrode material applied to the lamination apparatus of the present invention, (a) is a view showing a cross-sectional electrode material, (b) is a view showing a double-side electrode material.
  • FIG. 4 is a view showing a winding direction of the cross-sectional electrode material according to an embodiment of the present invention, (a) is a view showing the foil layer inner surface winding direction, (b) is a view showing the foil layer outer surface winding direction. .
  • R1, R2 input means
  • the lamination apparatus 100 includes a conveying means 20, cutters C1 and C2, an electrode guide 30, feeding means R1 and R2, and laminators L1 and L2.
  • the input means R1 and R2 of the laminators L1 and L2 of the electrode material 10 cut at the front end of the input means R1 and R2 of the laminators L1 and L2. It includes an electrode guide 30 for guiding the input to the device, thereby reducing the electrode input failure rate by the curl (curl) of the electrode material 10 and improves the speed of the lamination process.
  • the cutter C1 cuts the electrode material 10 unwound from the electrode material roll.
  • the electrode material 10 is wound in a notching step, which is a previous step, and is supplied in a rolled state.
  • the lamination apparatus 100 unwinds the electrode material 10 from the electrode material roll for lamination, and cuts the uncovered electrode material 10 into a predetermined size using the cutter C1.
  • the transfer means 20 transfers the electrode material 10 cut by the cutter C1.
  • the cut electrode material 10 transferred by the conveying means 20 is fed into the laminators L1 and L2 by the feeding means R1 and R2 of the laminators L1 and L2.
  • the cut electrode material 10 is supplied to the laminators L1 and L2 by the feeding means R1 and R2 of the laminators L1 and L2 via the electrode guide 30.
  • the conveying means 20 may be generally implemented as a conveyor belt widely used, but is not necessarily limited thereto.
  • the conveying means 20 may include all means for conveying the cut electrode material 10.
  • the electrode guide 30 is located at the front end of the feeding means R1 and R2 of the laminators L1 and L2, and in order to feed the cut electrode material 10 on the conveying means 20 into the laminators L1 and L2.
  • the laminators L1 and L2 are guided to the feeding means R1 and R2.
  • the electrode guide 30 is a metal plate having a predetermined thickness, and a detailed description of the electrode guide 30 will be described with reference to FIG. 2.
  • the feeding means R1 and R2 feed the cut electrode material 10 and the separator material 40 into the laminators L1 and L2.
  • the input means (R1, R2) may be implemented as a first roller (R1) and a second roller (R2) positioned to correspond to the upper, lower, as shown in FIG.
  • the first roller R1 and the second roller R2 are rotatable in mutually corresponding directions about the roller axis. Accordingly, the first roller R1 and the second roller R2 rotate the cut electrode material 10 and the separator material 40 passing through the electrode guide 30 at the front end of the laminators L1 and L2.
  • the laminator (L1, L2) that is, the cut electrode material 10 and the separator material 40 are introduced into the laminators L1 and L2 in an overlapping state.
  • the separator material 40 is supplied to the laminators L1 and L2 as unwound from the roll, and the electrode material 10 is supplied to the upper or lower portion of the separator material 40 in a cut state.
  • the separator material 40 does not necessarily have to be supplied to the laminators L1 and L2 as it is unwound from the roll, but is cut by a separate cutter and supplied to the laminators L1 and L2 as in the electrode material 10. May be
  • the laminators L1 and L2 laminate the separator material 40 by applying heat and pressure to the cut electrode material 10 in a state where the separator material 40 overlaps the upper or lower portion of the cut electrode material 10.
  • the laminators L1 and L2 may be implemented as upper and lower laminators L1 and lower laminators L2 positioned corresponding to upper and lower portions.
  • the upper laminator L1 and the lower laminator L2 are lowered or raised by driving of the lifting means (not shown), respectively, so that the upper laminator L1 and the lower laminator L2 are the electrode material 10 and the separator material 40, respectively.
  • Laminate by heating and pressing the surface in contact with). Accordingly, a sheet laminated in the form of the electrode material 10 / separator material 40 can be produced.
  • the lamination apparatus 100 illustrated in FIG. 1 it is illustrated that one electrode material 10 and one separator material 40 are stacked in the form of an electrode material 10 / separator material 40, but is not limited thereto. Do not. According to another exemplary embodiment, the lamination apparatus 100 may further include another electrode material (not shown) or a separator material (not shown), and may be stacked in two or more sheets.
  • the lamination device 100 may further include a cutter (C2) for cutting the laminated sheet at a predetermined interval.
  • the cutter C2 is disposed on the output end sides of the laminators L1 and L2 to cut the stacked sheets.
  • the electrode material 10 is manufactured by coating a positive electrode or a negative electrode on a foil layer, and the positive electrode is manufactured by applying a mixture of a positive electrode active material, a conductive material, and a binder onto a positive electrode current collector, and then drying and compressing the same.
  • the negative electrode like the manufacture of the positive electrode, the negative electrode is manufactured by applying a negative electrode active material on the negative electrode current collector, followed by drying and pressing, and optionally, a conductive material, a binder, a filler, and the like may be further included.
  • the separator material 40 is made of a material positioned between the positive electrode and the negative electrode to prevent a short and to allow only the movement of ions.
  • the separator material 40 may be formed of a material having a microporous structure such as polyethylene, polypropylene, or the like.
  • the present invention is not limited thereto and may be used in the separator material 40 as long as the material has an insulating structure and a porous structure capable of moving ions.
  • the separator material 40 may be coated with a coating material on the surface in contact with the electrode material 10.
  • the separator material 40 may be coated with a coating material having an adhesive force.
  • the coating material may be a mixture of inorganic particles and a binder polymer. Due to such a structure, even if the inorganic particles are coated on the separator material 40, ions can smoothly move between the positive electrode and the negative electrode through the separator material 40.
  • the sheets laminated by the lamination apparatus 100 may be used for the manufacture of the bicell. Furthermore, at least one bicell may be stacked to form an electrode assembly.
  • the electrode assembly may be implemented as any one of a jelly roll type electrode assembly, a stack & folding electrode assembly, and a stack & folding type electrode assembly.
  • FIG. 2 is a view showing an electrode guide according to an embodiment of the present invention.
  • Electrode guide 30 is a plate of a metal material having a predetermined thickness, as shown in Figure 2, a rectangular plate-shaped body 32 and one side of the body 32 is spaced at a predetermined interval spaced at right intervals It consists of a plurality of arms 31 of the rectangular plate shape having a predetermined size connected to.
  • the plurality of arms 31 each have a rectangular plate shape having a predetermined length, and the cutting means R1 and R2 are not inserted into the electrode material 10 due to the curl of the cut electrode material 10.
  • the body 32 has a square plate shape like the plurality of arms 31 and connects the plurality of arms 31 to one so that the electrode guide 30 can be stably used in the lamination device 100.
  • the fastening part 33 serves to fix one side of the electrode guide 30 to the conveying means 20 side. Accordingly, when the electrode guide 30 is installed in the lamination device 100, the electrode guide 30 is fixed to the conveying means 20 side through the fastening portion 33, the laminating means R1, R2 ) Is spaced apart by a predetermined interval.
  • the longitudinal length of the electrode guide 30 (the length in the direction in which the cut electrode material 10 is conveyed) may cause interference between the electrode guide 30 and the conveying means 20 and the laminating means R1 and R2. It can be determined to have the maximum size within the limit. In this case, the electrode is transported in the direction in which the plurality of arms 31 are positioned in the fastening part 33.
  • the horizontal length of the electrode guide 30 (the length in a direction perpendicular to the direction in which the cut electrode material 10 is transferred) may be determined based on the size of the cut electrode material 10 or the separator material 40. That is, the horizontal length of the electrode guide 30 is manufactured according to the size of the cut electrode material 10 or the separator material 40.
  • the electrode guide 30 may be detachable. Accordingly, the lamination device 100 can easily change the electrode guide 30 to match the size of the cut electrode material 10 or the separator material 40.
  • the lamination apparatus 100 can reduce the occurrence of electrode injection failure by the curl of the cut electrode material 10 by using the electrode guide 30 composed of a plurality of arms.
  • the speed of the lamination process is improved, and the overall electrode assembly productivity and yield may be increased.
  • FIG 3 is a view showing an electrode material applied to the lamination apparatus of the present invention, (a) is a view showing a cross-sectional electrode material, (b) is a view showing a double-side electrode material.
  • both the single-sided electrode material and the double-sided electrode material of FIG. 3 may be used.
  • the double-sided electrode material is coated with electrodes on both sides of the foil layer
  • the single-sided electrode material is coated with electrodes only on one surface of the foil layer.
  • the lamination device 100 including the electrode guide 30 has a greater effect in the case of a single-sided electrode material as compared with the conventional lamination device.
  • the cross-sectional electrode material in which the separator material is laminated by the lamination apparatus 100 according to the present embodiment may be used for manufacturing an R-type bicell or an L-type bicell.
  • the R-type bi-cell and the L-type bi-cell are basic units having a structure in which an anode / separator / cathode / separator / anode are sequentially stacked, and a single-sided electrode material in which electrodes are coated on only one surface based on a foil layer on only the last anode is used. .
  • the R type bicell and the L type bicell are classified according to the positions of the negative electrode tab and the positive electrode tab.
  • the positive electrode tab is on the right side of the negative electrode tab, and the positive electrode tab is on the left side, and the positive electrode tab is on the left side is the R type bicell.
  • An electrode assembly may be manufactured using at least one of such an R-type bicell or an L-type bicell.
  • FIG. 4 is a view showing a winding direction of the cross-sectional electrode material according to an embodiment of the present invention, (a) is a view showing the foil layer inner surface winding direction, (b) is a view showing the foil layer outer surface winding direction. .
  • the single-sided electrode material is coated with an electrode only on one surface of the foil layer. Accordingly, the electrode material roll wound around the cross-sectional electrode material is wound so that the cross section coated with the electrode faces the outer surface and the foil layer faces the inner surface, or conversely, the cross section coated with the electrode faces the inner surface, and the foil layer faces the outer surface. Can be wound to face. At this time, the inner surface shows the direction toward the center of the roll in the electrode material roll.
  • (a) is a cross-sectional view of an inner surface of the foil layer, in which an electrode-coated cross section faces an outer surface and a foil layer faces an inner surface in an electrode member roll wound around an electrode material.
  • (b) is a cross-sectional view of the foil layer outer surface winding, so that the cross section coated with the electrode toward the inner surface, the foil layer toward the outer surface in the electrode material roll wound around the cross-sectional electrode material.
  • the occurrence of electrode injection failure can be reduced also by the winding direction of the electrode material roll, such as whether the foil layer is wound toward the inner surface or wound toward the outer surface.
  • the electrode material cut like 11 is randomly bent, and the degree of bending is also different.
  • the winding direction of the electrode material roll is changed to the foil layer outer surface winding, the curl of the electrode material cut like 12 appears constantly, and the degree of warpage is also small.
  • a plurality of arms of a rectangular plate shape having a predetermined size are spaced at predetermined intervals.
  • the laminators L1 and L2 of the cut electrode material are inserted, using the electrode guide 30 having a shape connected to one body in a rectangular plate shape at right angles, the laminator L1, Since it can be added to L2) there is an effect that can significantly increase the yield of the normal electrode assembly.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

La présente invention concerne un appareil de stratification comprenant : un dispositif de coupe permettant de découper un matériau d'électrode déroulé à partir d'un rouleau de matériau d'électrode; un moyen de transfert permettant de transférer le matériau d'électrode découpé; un guide d'électrode qui est placé sur l'extrémité avant d'un moyen d'introduction d'une machine à stratifier de sorte à guider le matériau d'électrode découpé sur le moyen de transfert vers l'intérieur du moyen d'introduction de la machine à stratifier; le moyen d'introduction permettant d'introduire le matériau d'électrode découpé et un matériau séparateur dans la machine à stratifier; et la machine à stratifier permettant de stratifier le matériau séparateur par application de chaleur et de pression au matériau d'électrode découpé tandis que le séparateur est superposé sur la partie supérieure ou inférieure du matériau d'électrode découpé, le guide d'électrode présentant une forme dans laquelle une pluralité de bras est relié de manière orthogonale à un corps présentant une forme de plaque rectangulaire, les bras présentant une forme de plaque rectangulaire d'une taille prédéfinie et étant espacés les uns des autres à des intervalles prédéfinis.
PCT/KR2014/002825 2013-09-30 2014-04-02 Appareil de stratification comprenant un guide d'électrode WO2015046690A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480038699.9A CN105359323B (zh) 2013-09-30 2014-04-02 包括电极引导件的层压设备
JP2016523621A JP6210352B2 (ja) 2013-09-30 2014-04-02 電極ガイドを含むラミネーション装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020130116321A KR101586121B1 (ko) 2013-09-30 2013-09-30 전극 가이드를 포함하는 라미네이션 장치
KR10-2013-0116321 2013-09-30

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WO2015046690A1 true WO2015046690A1 (fr) 2015-04-02

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JP (1) JP6210352B2 (fr)
KR (1) KR101586121B1 (fr)
CN (1) CN105359323B (fr)
WO (1) WO2015046690A1 (fr)

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EP3136466B1 (fr) * 2015-08-27 2024-02-14 Samsung SDI Co., Ltd. Procédé de fabrication d'ensemble d'électrode

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KR102114811B1 (ko) * 2016-04-04 2020-05-25 주식회사 엘지화학 제조 공정성이 향상된 전극조립체 제조 장치
KR102516223B1 (ko) 2017-08-17 2023-03-30 주식회사 엘지에너지솔루션 전극 가열장치 및 그를 포함하는 이차전지용 제조시스템
IT201700103755A1 (it) * 2017-09-15 2019-03-15 Manz Italy Srl Metodo e apparato per assemblare elettrodi
KR102223722B1 (ko) 2017-10-24 2021-03-05 주식회사 엘지화학 이차전지용 라미네이션 장치 및 방법
KR102099292B1 (ko) * 2020-02-05 2020-04-09 이소라 라미네이팅으로 전극조립체를 형성하는 이차 전지 제조 시스템
US11201347B2 (en) 2019-09-30 2021-12-14 Sora Lee Secondary-cell manufacturing system for forming an electrode assembly using lamination
KR102099290B1 (ko) * 2019-09-30 2020-04-09 이소라 라미네이팅으로 제작된 단위셀로 전극조립체를 형성하는 이차 전지 제조 시스템
KR102101831B1 (ko) * 2019-09-30 2020-04-17 이소라 라미네이팅으로 단위셀을 제작하는 제작 공정과 그 단위셀로 전극조립체를 형성하는 제작 공정이 간소화 되는 이차 전지 제조 시스템
KR102586960B1 (ko) * 2021-06-28 2023-10-11 주식회사 디에이테크놀로지 이차전지 전극조립체의 단면 전극 스택용 분리막 핸들링장치 및 이를 이용한 이차전지 전극조립체 제조 방법

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JP2012221710A (ja) * 2011-04-07 2012-11-12 Kyoto Seisakusho Co Ltd 袋詰電極の製造装置、および袋詰電極の製造方法

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EP3136466B1 (fr) * 2015-08-27 2024-02-14 Samsung SDI Co., Ltd. Procédé de fabrication d'ensemble d'électrode

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KR101586121B1 (ko) 2016-01-22
CN105359323B (zh) 2017-08-08

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