WO2020106030A1 - Module de formation de poche de cellule de batterie rechargeable - Google Patents

Module de formation de poche de cellule de batterie rechargeable

Info

Publication number
WO2020106030A1
WO2020106030A1 PCT/KR2019/015870 KR2019015870W WO2020106030A1 WO 2020106030 A1 WO2020106030 A1 WO 2020106030A1 KR 2019015870 W KR2019015870 W KR 2019015870W WO 2020106030 A1 WO2020106030 A1 WO 2020106030A1
Authority
WO
WIPO (PCT)
Prior art keywords
pouch
electrode
separation membrane
secondary battery
forming
Prior art date
Application number
PCT/KR2019/015870
Other languages
English (en)
Korean (ko)
Inventor
윤진국
신종훈
Original Assignee
주식회사 이티에스
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 이티에스 filed Critical 주식회사 이티에스
Publication of WO2020106030A1 publication Critical patent/WO2020106030A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/12—Deep-drawing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • 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
    • H01M10/4285—Testing apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
    • 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 pouch forming module, and relates to a pouch forming module forming a shape of a pouch of a secondary battery cell.
  • Secondary cells are mainly used in areas where high power is used, such as portable devices, tools, and uninterruptible power supplies. In particular, they are widely used in the field of electric vehicles to suppress greenhouse gas emissions and reduce sources of income.
  • the pouch-type secondary battery performs an charging and discharging step and a degassing step through a package step of sealing an edge after inserting an electrode assembly including a cathode, a separator, and an anode into a pouch-shaped packaging material and injecting an electrolyte.
  • the electrode assembly and the pouch may be shorted (shorted) in the corresponding portion.
  • the lead tab and the pouch may be shorted in the corresponding part.
  • An object of the present invention is to provide a pouch forming module, specifically to provide a more efficient pouch for completing a secondary battery cell by combining the electrode / separator assembly and the pouch through molding of the pouch of the secondary battery cell. .
  • the present invention was created to achieve the object of the present invention as described above, and the electrode / separation membrane assembly in which the first electrode sheet 14 and the second electrode sheet 13 are alternately stacked with the separation membrane 15 interposed therebetween.
  • (2) is a module for forming a pouch 4 impregnated with electrolyte and contained therein, a pouch loading unit 610 for loading a pouch 4 of a certain size; A pouch forming part 620 for forming the pouch 4 so that the pouch 4 loaded by the pouch loading part 610 can receive the electrode / separator assembly 2;
  • a pouch forming module 600 comprising a pouch cutting portion 630 for cutting the molded pouch 4.
  • the pouch forming part 620 includes a reference line forming part 640 including a reference line forming member 641 for forming a reference line (C) crossing the center vertically in the longitudinal direction of the pouch 4; It may include a pouch pressing portion 650 to oppose the reference line (C) to form a pair of receiving portions (651, 652).
  • the pouch foundation portion 630 after folding the pouch 4 so that a pair of storage portions 651 and 652 contact with respect to the reference line C of the pouch 4, cut the edge of the pouch 4 Can be.
  • the pouch forming module 600 may further include a pouch inspection unit 660 for inspecting the defect of the pouch 4.
  • the pouch inspecting unit 660 may inspect the defect by obtaining an image after irradiating the pouch 4 with light.
  • the secondary battery cell manufacturing facility system according to the present invention has an advantage of increasing the overall package process speed and increasing production efficiency per unit time.
  • the positive and negative electrode tabs of the secondary battery cells can be welded in one module, so that the welding process is It has the advantage of improving speed.
  • the manufacturing speed of the secondary battery cell is improved.
  • the lead tab coupling module includes an apparatus for cutting the electrode tabs of the electrode / separation membrane assembly according to the anode portion of the cathode portion, but the present invention provides a negative electrode portion of the electrode tab with one cutting device by dividing the cutting member. And by cutting the positive electrode portion together has the advantage of improving the manufacturing speed of the secondary battery cell.
  • the electrode / separator assembly can be inserted into the pouch more easily by shaping the pouch into which the electrode / separator assembly is inserted before the bonding process, and a separate alignment is not required to improve the manufacturing speed of the secondary battery cell. It has the advantage of prescribing.
  • defects can be minimized by performing an insulation measurement test to determine whether a defect has occurred in a stacking process, a tap welding process, a pre-sealing process, etc. before injecting it into a secondary battery cell. Whether or not the back is inserted and the function test of the separator also have the advantage that can be performed together.
  • 1 is a plan view of a pouch type secondary battery cell.
  • FIG. 2A is a cross-sectional view of a pouch type secondary battery cell
  • FIG. 2B is a conceptual diagram of an electrode / separation membrane assembly.
  • FIG. 3 is a block diagram of a secondary battery manufacturing system.
  • FIG. 4 is a plan view of the lead tab coupling module.
  • Fig. 5A is a side view of the transfer section of the electrode / separation membrane assembly loading apparatus
  • Fig. 5B is a front view of the transfer section of the electrode / separation membrane assembly loading apparatus.
  • FIGS. 6 and 7 are plan and side views illustrating a process in which the electrode / separation membrane assembly is loaded in the electrode / separation membrane assembly loading apparatus.
  • FIG 8 and 9 are plan and side views showing an alignment process of the electrode / separator assembly loading apparatus.
  • FIG. 10A is a front view of the electrode tab cutting device of the lead tab coupling module
  • FIG. 10B is a side view of the electrode tab cutting device of the lead tab coupling module.
  • FIGS. 11A and 11C are plan and perspective views of the molded pouch.
  • FIG. 12A is a side view of the insulation resistance measurement device
  • FIG. 12B is a plan view of the insulation resistance measurement device.
  • the assembly 2 is connected to a pair of electrode tabs 11 and 12 of an electrode / separator assembly 2 and a pouch 4 contained therein by impregnation with an electrolyte solution, and protrudes to the outside of the pouch 4
  • An electrode / separation membrane assembly 2 having a structure in which the pouch 4 is inserted into the secondary battery cell 1 to form a secondary battery cell 1;
  • the lead tab coupling module 100 and the pouch coupling module 200 may be combined in a pair with respect to one infusion module 300 in a sequentially coupled state, and the infusion module according to the speed of each module ( Of course, 300) can be made in a pair.
  • the first electrode sheet 13 and the second electrode sheet 14 are alternately stacked, and the first electrode sheet is stacked.
  • the separation membrane 15 is positioned between the 13 and the second electrode sheets 14 and includes a plurality of electrode tabs 11 and 12 extending from the electrode sheets 13 and 14 and projecting to the outside.
  • the first electrode sheet 13 and the second electrode sheet 14 are stacked alternately, and are separated by a separator 15 therebetween, forming positive and negative electrodes of the secondary battery cell 1, respectively.
  • a separator 15 As a member, it may be formed of a metal sheet according to electrode characteristics.
  • the separator 15 is a member interposed between the first electrode sheet 13 and the second electrode sheet 14, and preferably has a material having high wettability to the electrolyte and high chemical resistance.
  • the separator 15 may have various materials according to the material of the first electrode sheet 13 and the second electrode sheet 14, the physical properties of the electrolyte, and the like.
  • the electrode tabs 11 and 12 are configured to extend from the first electrode sheet 13 and the second electrode sheet 14, and various configurations are possible.
  • the electrode tab 11 may protrude to one side of the battery assembly 10, or may protrude on both sides oppositely.
  • the lead tab coupling module 100 includes a pair of loading regions A1 in which the electrode / separation membrane assembly 2 is loaded from the first transfer line L1 to which the electrode / separation membrane assembly 2 is sequentially supplied.
  • Cutting region (A3) for cutting a pair of electrode tabs 11 and 12 of the electrode / separation membrane assembly 2 using the electrode tab cutting device 120 including the cutting member 121, and the electrode / separation membrane assembly A pair of electrode tabs of the first welding region A4 for welding the lead tabs 31 and 32 to any one of the pair of electrode tabs 11 and 12 of (2), and the electrode / separation membrane assembly 2
  • a second welding region A5 for welding the lead tabs 31, 32 to the other of the (11, 12) and a pair of electrode tabs 11, 12 of the electrode / separator assembly 2, respectively.
  • the unloading area (A0) discharged to the second transfer line (L2) for transferring the electrodes / separator assembly (2) welded to the pouch coupling module 200 is sequentially set along the circumferential direction. It includes a turntable 110 that sequentially positions from the loading area A1 to the unloading area A0 while supporting the electrode / separator assembly 2.
  • the loading area A1 is configured to include an electrode / separation membrane assembly loading device to allow the electrode / separation membrane assembly 2 to be loaded into the lead tab coupling module 100, and various configurations are possible.
  • the electrode / separation membrane assembly loading apparatus can be configured in a variety of configurations, with the electrode / separation membrane assembly 2 being simultaneously loaded and aligned with the lead tab coupling module 100.
  • the electrode / separation membrane assembly loading device includes a transfer unit including a head portion 940 for fixing the electrode / separation membrane assembly 2 to transfer the electrode / separation membrane assembly 2 to the lead tap coupling module 100. 910; A fixing part 920 including an upper plate 921 and a lower plate 922 for fixing the electrode / separation membrane assembly 2 to the lead tab coupling module 100; And an alignment unit 930 for aligning the electrode / separation membrane assembly 2.
  • the head portion 940 is fixed to the opening / closing portion 941 and the electrode / separation membrane assembly 2 including a pair of opening / closing members 941a, and transfers the chuck member 941b to the lead tap coupling module 100.
  • Various configurations are possible with the included configuration.
  • the head portion 940 includes a configuration that is vertically driven with respect to the ground so that the electrode / separation membrane assembly 2 is positioned between the upper plate 921 and the lower plate 922 of the fixing portion 920. can do.
  • the opening / closing portion 941 may include a pair of opening / closing members 941a parallel to the ground and operating perpendicular to the longitudinal direction of the electrode / separation membrane assembly 2, and the chuck member 941b It may be configured to be fixed to the electrode / separation membrane assembly 2 is coupled to the lower portion of the opening and closing member (941a).
  • the opening / closing portion 941 is spaced at the top of the electrode / separation membrane assembly 2 so as to be parallel to the ground and perpendicular to the longitudinal direction of the electrode / separation membrane assembly 2 to pick up the electrode / separation membrane assembly 2.
  • Various configurations are possible with the adjustable configuration.
  • opening / closing member 941a is configured in a U-shape, and both ends are bent toward the electrode / separator assembly 2 in various configurations.
  • the electrode / separator assembly 2 is positioned between both ends of the opening / closing member 941a and the chuck member 941b coupled to the lower portion of the opening / closing member 941a to fix the electrode / separator assembly 2
  • Various configurations are possible.
  • the chuck member 941b is configured to be connected to a pair of opening / closing members 941a in a pair along the longitudinal direction of the electrode / separator assembly 2, and various configurations are possible.
  • the chuck member 941b can be driven up and down to fix the electrode / separation membrane assembly 2 together with the opening / closing member 941b.
  • the transfer unit 910 may be transferred while descending stepwise so that the electrode / separation membrane assembly 2 is positioned between the upper plate 921 and the lower plate 922 of the fixing unit 920.
  • the transfer unit 910 is first lowered before being transferred to the fixing unit 920, and then the electrode / separator assembly 2 between the upper plate 921 and the lower plate 922 of the fixing unit 920. After being transported to be inserted, it may descend secondarily.
  • the transport unit 910 includes a guide rail 911 that guides the electrode / separator assembly 2 to be loaded from the first transfer line L1 to which the electrode / separator assembly 2 is sequentially supplied.
  • a guide rail 911 that guides the electrode / separator assembly 2 to be loaded from the first transfer line L1 to which the electrode / separator assembly 2 is sequentially supplied.
  • the guide rail 911 may be configured to be connected from the first transfer line (L1) to the loading area (A1) of the lead tap coupling module 100, and the electrode / separator assembly 2 is interfering with the transfer. It is preferably installed so that it does not occur.
  • the guide rail 911 may not be perpendicular to the first transfer line L1, but the electrode / separation membrane assembly 2 fixed by the head portion 940 of the transfer portion 910 has a length. It is preferable that the direction is maintained perpendicular to the first transfer line L1 so that it is transferred from the first transfer line L1 to the loading area A1.
  • the components of the head portion 940 must maintain a parallel or vertical relationship with the electrode / separator assembly 2, the head
  • the configuration of the portion 940 and the configuration of the guide lane 911 can achieve a somewhat misaligned structure.
  • the fixing part 920 includes a top plate 921 and a bottom plate 922 to fix the electrode / separator assembly 2 to the turntable 110 of the lead tab coupling module 100, and has various configurations. It is possible.
  • the fixing part 920 is a configuration in which the support 923 extending from the upper plate 921 is hinged with the lower plate 922, and various configurations are possible.
  • the support 923 is preferably extended toward the center of the turntable 110 of the lead tab coupling module 100, and is coupled to the turntable 110 so that the electrode / membrane assembly 2 can be sequentially transferred.
  • the support 923 is preferably extended toward the center of the turntable 110 of the lead tab coupling module 100, and is coupled to the turntable 110 so that the electrode / membrane assembly 2 can be sequentially transferred.
  • Various configurations are possible.
  • the support 923 may be configured to be hinged with the upper plate 921 at the upper portion of the upper plate 921 so that the upper plate 921 can be fixed by pressing the electrode / separation assembly 2. .
  • the lower plate 922 may be configured to fix the electrode / separation membrane assembly 2 so as not to move through a configuration such as an adsorption pad.
  • the alignment unit 930 is vertical to the edge of the electrode / separator assembly 2, and various configurations are possible including an alignment member 931, 932, 933, 934, and 935 for aligning. Do.
  • any one of the alignment members 931 is located between the electrode tabs 11 and 12 of the electrode / separation membrane assembly 2 to align the electrode / separation membrane assembly 2 so as not to interfere with it. Configuration is possible.
  • the other alignment members (932, 933, 934, 935) except for the alignment member 931 located between the electrode tabs 11 and 12 are located at the remaining edge of the electrode / separator assembly 2 to align.
  • Various configurations are possible.
  • the alignment members 931, 932, 933, 934, and 935 are configured to align the electrode / separation membrane assembly 2 while moving parallel to the plate surface of the electrode / separation membrane assembly 2, and various configurations are possible. .
  • the alignment members 931, 932, 933, 934, and 935 can be moved using the pneumatic cylinder 936, and move toward the center from the edge of the electrode / separation membrane assembly 2 while the electrode / separation membrane assembly 2 ) Can be aligned.
  • the alignment unit 930 is configured to include an alignment unit driving unit 937 for driving the alignment unit 930 up and down under the alignment members 931, 932, 933, 934, and 935. It is possible.
  • the electrode / separation membrane assembly 2 is transferred by the transfer unit 910, and is positioned between the upper plate 921 and the lower plate 932 of the fixing unit 920. After that, various configurations are possible in a configuration that moves up and down so that there is no interference in the transfer of the electrode / separation membrane assembly 2 until the process of rotational transfer by the turntable 110.
  • the method of loading the electrode / separation membrane assembly 2 into the lead tap coupling module 100 is fixed to the electrode / separation membrane assembly 2 for transferring the electrode / separation membrane assembly 2 to the lead tap coupling module 100.
  • the head portion 940 is lowered toward the electrode / separation membrane assembly 2 from the top of the first transfer line (L1); A step in which the head portion 940 fixes the electrode / separation membrane assembly 2 and transfers it to the first position P1 of the loading area A1; After the head portion 940 descends by a predetermined height, and then transferred to the second position (P2) again;
  • Various configurations are possible with a configuration including the step of aligning the electrode / separation membrane assembly 2 to the alignment portion 930 to align the electrode.
  • the electrode / separator assembly 2 is transferred to the second position P2, it is fixed by the fixing part 920, the chucking of the chuck member 941b is released, and the opening / closing member 941a is an electrode /
  • the electrode / separation membrane assembly 2 is fixed by the head unit 940 by moving perpendicular to the longitudinal direction of the separation membrane assembly 2.
  • the alignment unit 930 is raised by the alignment unit driving unit 937 to support the electrode / separation membrane assembly 2, while fixing by the fixing unit 920 is released, and the alignment members 931, 932 , 933, 934, 935) to align the electrode / separation membrane assembly 2.
  • the electrode / separation membrane assembly 2 is fixed again by the fixing portion 920, and the alignment portion 930 descends so that the electrode / separation membrane assembly 2 is transferred to the next configuration by the turntable 110. So that there is no interference.
  • the first position P1 is far from the center of the turntable 110 compared to the second position P2, and the second position P2 is the upper plate 921 of the fixing part 920. It is preferably between the and the lower plate (922).
  • the cutting area A3 cuts a pair of electrode tabs 11 and 12 of the electrode / separator assembly 2 using an electrode tab cutting device 120 including a pair of cutting members 121.
  • an electrode tab cutting device 120 including a pair of cutting members 121.
  • a pair of cutting members 121 for cutting the electrode tabs 11 and 12 of the electrode / separation membrane assembly 2; It includes a driving unit 122 for driving the cutting member 121 up and down.
  • the cutting member 121 is composed of a pair, and corresponding to the negative electrode portion 11 and the positive electrode portion 12 of the electrode tabs 11 and 12, the negative electrode portion 11 of the electrode tabs 11 and 12 and Various configurations are possible by cutting each of the anode portions 12.
  • the cutting member 121 forms a constant angle with respect to the plate surface of the electrode / separation membrane assembly 2, and a structure and an electrode tab 11 for cutting the cathode 11 of the electrode tabs 11 and 12 , 12)
  • the configuration for cutting the anode portion 12 may be formed separately.
  • the pair of cutting members 121 is preferably made of different metals depending on the constituent materials of the cathode 11 and the anode 12 of the electrode tabs 11 and 12, respectively.
  • the driving unit 122 is a configuration for cutting the electrode tabs 11 and 12 by vertically driving the cutting member 121 and various configurations are possible.
  • the driving unit 122 may be configured to cut the electrode tabs 11 and 12 by vertically moving a pair of cutting members 121, and is configured such that rotational movement by a motor or the like is converted to linear driving.
  • Various configurations are possible, and may be a configuration in which the cutting member 121 is directly vertically moved by a pneumatic cylinder or the like.
  • the electrode tabs 11 and 12 of the electrode / separation membrane assembly 2 are fixed, and various configurations are possible with a configuration including a cutting guide part 123 to be cut by the cutting member 121.
  • the electrode tabs 11 and 12 of the electrode / separation membrane assembly 2 are transferred to the upper part of the cutting guide part 123, and the electrode tabs 11 and 12 are fixed.
  • Various configurations are possible with the configuration to be cut.
  • the cutting guide part 123 may include a configuration for collecting unnecessary parts of the cut electrode tabs 11 and 12.
  • the first welding region A4 and the second welding region A5 weld the lead tabs 31 and 32 to any one of the pair of electrode tabs 11 and 12 of the electrode / separation membrane assembly 2.
  • Various configurations are possible with a configuration including a welding device.
  • the first electrode sheet 13 and the second electrode sheet 14 of the electrode / separator assembly 2 have different constituent materials, and thus are welded in different environments according to the configuration of the electrode sheets.
  • the electrode / separation membrane assembly 2 in which the lead tabs 31 and 32 are welded to each of the pair of electrode tabs 11 and 12 of the electrode / separation membrane assembly 2 is coupled to the pouch.
  • Various configurations are possible, including a configuration for discharging to the second transfer line L2 for delivery to the module 200.
  • the electrode / separation membrane assembly 2 may be discharged by rotating a certain angle so as to be discharged in the longitudinal direction of the second transfer line L2.
  • the turntable 110 is configured to sequentially position the loading area from the loading area A1 to the unloading area A0 while supporting the electrode / separation membrane assembly 2.
  • the turntable 110, 12 or less areas can be sequentially positioned, and a variety of configurations are possible with a configuration that can add or delete required areas according to options.
  • the electrode tabs 11 and 12 of the fixing part 920 of the electrode / separation membrane assembly 2 have an outer circumferential direction of the turntable 110.
  • the electrode / separation membrane assembly 2 may be configured to be fixed so as to face and the turntable 110 rotates.
  • the lead tab coupling module 100 further includes a soluble welding area A2 primarily welding the pair of electrode tabs 11 and 12 to fix the pair of electrode tabs 11 and 12. can do.
  • the temporary welding area A2 includes a device for welding the electrode tabs 11 and 12 to facilitate cutting before cutting the electrode tabs 11 and 12, and various configurations are possible, and a pair It is preferable to include a pair of welding devices to be able to weld the electrode tabs 11 and 12, respectively.
  • the lead tab coupling module 100 may further include a cleaning area A6 for removing foreign substances by welding after welding a pair of electrode tabs 11 and 12.
  • the cleaning area A6 may include at least one of a vacuum dust collecting unit 161 for removing foreign matter by vacuum and an air blow unit 162 for removing foreign matter by spraying gas.
  • the lead tab coupling module 100, the electrode tab pressing region (A7) for pressing the welding portion of the pair of electrode tab 11 or a protective tape attachment region (A8) for attaching a protective tape for protecting the welding portion It may further include.
  • the electrode tab pressing region A7 is configured to include a device for strengthening the connection of the electrode tabs by pressing the welding portions of the electrode tabs 11 and 12, and various configurations are possible.
  • the protective tape attachment region A8 is configured to prevent defects such as separation of the electrode sheets 13 and 14 and the separation membrane 15 of the electrode / separation membrane assembly 2 in an uncoupled state. It is possible.
  • the secondary battery manufacturing system further includes a pouch forming module 600 forming the pouch 4 before the electrode / separation membrane assembly 2 and the pouch 4 are assembled in the pouch assembly module 200. can do.
  • the pouch forming module 600 includes a pouch loading unit 610 for loading a pouch 4 of a certain size; A pouch forming part 620 for forming the pouch 4 so that the pouch 4 loaded by the pouch loading part 610 can receive the electrode / separator assembly 2; Various configurations are possible with a configuration including a pouch cutting portion 630 for cutting the molded pouch 4.
  • the pouch loading unit 610 is configured with a pouch roll, while cutting the supplied pouch 4 to a predetermined size and loading it into the pouch molding unit 620, various configurations are possible.
  • the pouch forming part 620 is configured to mold the pouch 4 so that the pouch 4 loaded by the pouch loading part 610 can receive the electrode / separator assembly 2, and various configurations are possible. .
  • the pouch forming part 620 includes a reference line forming part 650 including a reference line forming member 651;
  • a reference line forming part 650 including a reference line forming member 651;
  • Various configurations are possible with a configuration including a pouch pressing portion 660 that is pressed against the reference line C to form a pair of receiving portions 661 and 662.
  • the reference line forming unit 650 is configured to prevent the need for a separate alignment when the electrode / separator assembly 2 is stored in the pouch 4, perpendicular to the longitudinal direction of the pouch 4 Various configurations are possible with a configuration including a reference line forming member 651 for forming a reference line C across the center.
  • the reference linear forming member 651, the pouch (4) is pressed so as not to be cut completely, or a part of the cross section of the pouch (4) can be configured in various configurations.
  • This configuration does not require a separate alignment, unlike when the electrode / separator assembly 2 is stored using a pair of separated pouches, and allows a pair of storage units to be in contact with each other accurately. It has the advantage that the electrode / separator assembly 2 in the pouch 4 can be easily received.
  • the pouch pressing portion 660 is configured to form a pair of receiving portions 661 and 662 by pressing, and various configurations are possible.
  • pair of receiving parts 661 and 662 are preferably approximately the same height, but may be different from each other as necessary.
  • the pouch foundation portion 630 is to cut the edge of the pouch 4 after folding the pouch 4 so that a pair of storage portions 661 and 662 contact with respect to the reference line C of the pouch 4 Various configurations are possible.
  • the pouch forming module 600 may be configured in a variety of configurations further comprising a pouch inspection unit 640 for inspecting the defect of the pouch 4.
  • the pouch inspection unit 640 is a configuration that inspects the defect by acquiring a projected image after irradiating the pouch 4 with light, and various configurations are possible.
  • the secondary battery manufacturing system may further include an inspection module 700 for inspecting the defect of the secondary battery cell 1.
  • the inspection module 700 may be configured in a configuration that further includes a weight inspection device 710 for measuring the weight of the secondary battery cell 30 to determine whether the electrolyte is evaporated by vacuum.
  • the inspection module 700 may be configured in a variety of configurations to simultaneously perform various inspections using a turntable device.
  • the secondary battery manufacturing system the electrode tab (11,12) of the secondary battery cell (1) to track the history of the secondary battery cell (1) to the electrode tab (11, 12) of the secondary battery cell (1) ),
  • a laser marking device that is engraved with a laser, and various configurations are possible.
  • the laser marking device may be imprinted with features such as the manufacturing date or physical properties of the electrode tabs 11 and 12, and may be imprinted in the form of a barcode or QR code.
  • the secondary battery manufacturing system may further include an insulation resistance measuring device 800 that pressurizes the secondary battery cell 1 before pouring the secondary battery cell 1 to measure insulation.
  • the insulation resistance measuring device 800 may be configured in a variety of configurations including a cell pressing part 810 and a plurality of connection terminal parts 820.
  • a variety of configurations are possible with a configuration that further includes a secondary battery cell rotation transfer device 840 that rotates and transfers the secondary battery cell 1.
  • the cell pressing unit 810 is positioned to face each other in parallel with the secondary battery cell 1 interposed therebetween, and the upper pressing member 811 and the lower pressing member 812 for pressing the secondary battery cell 1 Various configurations are possible with a configuration including a.
  • the upper pressing member 811 located in a portion of the upper portion of the secondary battery cell rotation transfer device 840 and the lower pressing member positioned below the secondary battery cell 1 corresponding to the secondary battery cell 1 ( 812).
  • it may include a pressure driving unit 830 for vertically moving at least one of the upper pressing member 811 and the lower pressing member 812 to the plate surface of the secondary battery cell (1).
  • the secondary battery cell rotation transfer device 830 may exist independently so that rotation of the 840 and driving of the pressure driving unit 830 do not interfere with each other.
  • a pressure driving unit 830 is present at a lower portion of the portion where the upper pressing member 811 is located, and the lower pressing member 812 that is movable apart from the secondary battery cell rotation transfer device 840 is raised to increase the secondary pressure.
  • the battery cell 1 may be configured to be pressed.
  • a lower pressing member 812 is positioned under the secondary battery cell 1, and the secondary battery cell rotation transfer device 840 supports the lower pressing member 812 to support the secondary battery cell 1 and the lower pressing.
  • the members 812 can be rotated together.
  • the upper and lower pressing members (811, 812) may be composed of a plate, it is preferable to be configured to a size sufficient to press the entire surface of the secondary battery cell (1).
  • the pressure driving unit 830 is configured to include a hydraulic cylinder 831, various configurations are possible, and a configuration for moving at least one of the upper and lower pressing members 811 and 812 to be closer to the secondary battery cell 1 Various configurations are possible.
  • the pressure driving part 830 may include a pressure driving member 832 protruding from the upper portion, and the pressure driving member 832 is formed by protruding from the lower end of the lower pressing member 812. ),
  • the lower pressing member 812 connected to the protrusion 812a may be configured to rise.
  • the pressure driving unit 830 independently moves the lower pressing member 812 while driving up and down independently of the secondary battery cell rotation transfer device 840.
  • the secondary battery cell 1 can be pressed through.
  • the plurality of connection terminals 820 are configured to be electrically connected to the secondary battery cell 1 in order to measure the insulation resistance of the secondary battery cell 1, and various configurations are possible.
  • connection terminals 820, the at least one lead tab connection terminal portion 821 or electrically connected to the lead tabs 31, 32 or at least one pouch electrically connected to the pouch 4 It may include a connection terminal portion 822.
  • the lead tab connection terminal unit 821 may be connected to the lead tabs 31 and 32 by driving up and down on the lead tabs 31 and 32.
  • the pouch connection terminal portion 822 is electrically connected to the pouch 4 while driving vertically with the lead tabs 31 and 32 in a direction in which the lead tabs 31 and 32 of the secondary battery cell 1 are coupled. Can be.
  • the lead tabs 31 and 32 are formed to protrude, and the secondary battery cell of the portion where the lead tabs 31 and 32 protrude.
  • the pouch connection terminal portion 822 is vertically connected to the secondary battery cell 1 to the pouch 4 of the portion where the lead tabs 31 and 32 protrude. Can be.
  • the insulation is measured by applying a voltage to measure the resistance. For example, a voltage of 25V can be applied, and the resistance therefor is applied. It is possible to determine whether a current flows through the secondary battery cell 1 by measuring.
  • the separation membrane 15 and the electrode sheets 13 and 14 are all in contact with each other, so that the insulation layer 15 is inspected for insulation. It can be a criterion for judging.
  • a method of manufacturing a secondary battery cell according to the present invention includes a method of manufacturing a pouch-type secondary battery cell 1, comprising: a lead tab coupling step using the lead tab coupling module 100; A pouch bonding step of forming the secondary battery cell 1 in a structure in which the electrode / separator assembly 2 is inserted inside the pouch 4; A pouring step of injecting an electrolyte into the pouch 4 of the secondary battery cell 1 which has undergone the pouch bonding step; An impregnation step of impregnating the separation membrane of the electrode / separation membrane assembly 2 with the electrolyte injected in the injection step; And a sealing step of sealing the pouch 4 of the secondary battery cell 1 that has undergone the impregnation step.

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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)
  • Secondary Cells (AREA)

Abstract

La présente invention se rapporte à un module de formation de poche et à un module de formation de poche pour former la forme d'une poche d'une cellule de batterie rechargeable. La présente invention a pour but d'atteindre l'objectif de la présente invention décrit ci-dessus et porte sur un module permettant de former une poche (4) dans laquelle un ensemble électrode/séparateur (2), qui comprend des premières feuilles d'électrode (14) et des secondes feuilles d'électrode (13) empilées en alternance, des séparateurs (15) étant intercalés entre celles-ci, et qui est imprégné d'un électrolyte, est stocké dans celle-ci. Un module de formation de poche (600) est caractérisé en ce qu'il comprend : une unité de chargement de poche (610) pour charger une poche (4) d'une certaine taille ; une unité de formation de poche (620) pour former la poche (4), chargée par l'unité de chargement de poche (610), de telle sorte que la poche (4) puisse recevoir l'ensemble électrode/séparateur (2) ; et une unité de découpe de poche (630) pour couper la poche formée (4).
PCT/KR2019/015870 2018-11-21 2019-11-19 Module de formation de poche de cellule de batterie rechargeable WO2020106030A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0144573 2018-11-21
KR1020180144573A KR102602209B1 (ko) 2018-11-21 2018-11-21 이차전지셀 파우치성형모듈

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WO2020106030A1 true WO2020106030A1 (fr) 2020-05-28

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KR (1) KR102602209B1 (fr)
WO (1) WO2020106030A1 (fr)

Cited By (2)

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EP4333145A1 (fr) * 2022-09-01 2024-03-06 SK On Co., Ltd. Système de fabrication de batterie secondaire ayant une unité de conditionnement multiple
EP4340086A1 (fr) * 2022-09-15 2024-03-20 SK On Co., Ltd. Système de fabrication de batterie secondaire ayant une unité de conditionnement multiple

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KR102405518B1 (ko) 2021-04-27 2022-06-03 경규오 전지셀 파우치 성형장치
KR20230085013A (ko) * 2021-12-06 2023-06-13 주식회사 엘지에너지솔루션 파우치 성형설비 및 성형방법

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KR20060011428A (ko) * 2004-07-30 2006-02-03 주식회사 이스퀘어텍 이차전지용 파우치의 성형장치
KR20140005614A (ko) * 2012-07-05 2014-01-15 주식회사 엘지화학 파우치 케이스 성형 장치, 파우치 케이스 성형 지그, 이를 이용하여 제조된 파우치 케이스 및 파우치 케이스 제조 방법
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4333145A1 (fr) * 2022-09-01 2024-03-06 SK On Co., Ltd. Système de fabrication de batterie secondaire ayant une unité de conditionnement multiple
EP4340086A1 (fr) * 2022-09-15 2024-03-20 SK On Co., Ltd. Système de fabrication de batterie secondaire ayant une unité de conditionnement multiple

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KR20200059615A (ko) 2020-05-29

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