WO2018030570A1 - Appareil et procédé de pliage de cellules pour batterie secondaire - Google Patents

Appareil et procédé de pliage de cellules pour batterie secondaire Download PDF

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Publication number
WO2018030570A1
WO2018030570A1 PCT/KR2016/009293 KR2016009293W WO2018030570A1 WO 2018030570 A1 WO2018030570 A1 WO 2018030570A1 KR 2016009293 W KR2016009293 W KR 2016009293W WO 2018030570 A1 WO2018030570 A1 WO 2018030570A1
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WO
WIPO (PCT)
Prior art keywords
lead tab
folding
bending bar
lead
pedestal
Prior art date
Application number
PCT/KR2016/009293
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English (en)
Korean (ko)
Inventor
유승길
이성구
김지원
Original Assignee
(주)테크랜드
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Publication date
Application filed by (주)테크랜드 filed Critical (주)테크랜드
Publication of WO2018030570A1 publication Critical patent/WO2018030570A1/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
    • 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

  • the present invention relates to a folding device and method for a cell for a secondary battery.
  • a plurality of cells are welded to a lead tab and folded to be accommodated in a can, and damage to terminals due to vibration
  • a battery refers to a device that converts energy released by these changes into electrical energy using chemical or physical reactions of materials.
  • Such batteries are classified into chemical cells using chemical reactions and physical cells using physical reactions, and chemical cells are generally used more widely.
  • Chemical cells can be further classified into primary cells and secondary cells.
  • the primary battery puts a working substance near the electrode in advance and uses electrical energy generated by chemical change of the substance.
  • Such a primary battery cannot be regenerated at the end of its life after chemical change of an active substance, and is commonly known as a dry battery.
  • the secondary battery is widely known as a rechargeable battery that can discharge and regenerate electrical energy after supplying electrical energy to the battery, ie, charging the battery even after the action material changes.
  • batteries are used for various purposes in various fields according to their characteristics.
  • the use of secondary batteries includes portable electronic devices such as laptops, smartphones and tablets, as well as transportation vehicles such as electric vehicles and electric bicycles. Its application is expanding exponentially for industrial and mass storage.
  • the secondary battery may be classified into a pouch type secondary battery packaged in a soft resin film and a can type secondary battery packaged in a hard type metal case.
  • Pouch type secondary battery has the advantage that the volume is relatively small and the overall light weight, but has the disadvantage that the stability by the external force is poor.
  • the can-type secondary battery has a disadvantage that the volume is relatively large and the overall weight is heavy, but has a high safety against external force and is widely used.
  • FIG. 1 is a perspective view showing a general can type secondary battery
  • FIG. 2 is an exploded perspective view showing a general can type secondary battery.
  • a typical can type secondary battery includes a cap plate 10 having a terminal 11 formed thereon, as shown in FIGS. 1 and 2; A cell 20 into which the lead 21 is drawn out; A lead tab 30 for interconnecting the lead 21 of the cell 20 and the terminal 11 of the cap plate 10;
  • the cell 20 is configured of a can 40 made of a metal material to be folded and accommodated.
  • the cell 20 may be a winding cell in which a small capacity unit cell is wound or a stacking cell stacked in multiple layers as illustrated in the drawing.
  • the use of a plurality of small capacity cells without using one large capacity cell is to satisfy the type approval standard and the like and to increase the safety of use.
  • the lead 21 of the cell 20 and the terminal 11 of the cap plate 10 are welded to the lead tab 30. Afterwards, it was necessary to fold the cell 20.
  • the present invention is to solve the above problems, it can be implemented in a form that can be easily inserted into the can of the secondary battery by automatically folding a plurality of cells to increase the manufacturing convenience, while the lead of the cell with such folding Secondary battery cell to maximize the durability and market competitiveness of the product by preventing the damage of the terminal due to vibration by forming a buffer section of approximately U-shaped cross section in the lead tab interconnecting the terminals of the cap plate and the cap plate. It is intended to provide a folding apparatus and method.
  • Such a folding device for a secondary battery cell of the present invention includes a pedestal on which a cap plate is seated so that a terminal is exposed upward; A folding jig, which is foldably connected to both sides of the pedestal, and in which the cells drawn out of the lead toward the center are respectively seated; A welding head for selectively lowering to weld a lead tab to a terminal of the cap plate and a lead of the cell; A first bending bar that is selectively placed on the lead tab while the folding jig is folded at right angles relative to the pedestal to bend the lead tab at right angles; A molding member for introducing a plate-shaped molding tool from both sides of the lead tab; It is achieved by including a second bending bar that is selectively placed on the lead tab during entry of the forming tool to form a cushioning section of U-shaped cross section on a vertical surface of the lead tab.
  • the welding head may perform ultrasonic welding by oscillating ultrasonic waves, and may be connected to a lifting member including an actuator.
  • first bending bar has a rectangular cross section;
  • second bending bar has a U-shaped cross section;
  • the first bending bar and the second bending bar may be connected to a transfer member including an actuator for forward and retreat, respectively.
  • the conveying member connected to the first bending bar and the conveying member connected to the second bending bar are connected to each other by a connecting member and guided to be moved in a straight line on the same guide rail, and alternately in a line with the longitudinal direction of the pedestal. It is desirable to be able to align.
  • the folding jig is foldable by being connected to a folding member including an actuator; It is most preferable that the pedestal is connected to the supporting member including the actuator and can be elevated.
  • the folding method of the secondary battery cell of the present invention the cap plate loading step of placing the cap plate on the pedestal; A lead tab loading step of placing a lead tab over a terminal on the cap plate; A cell loading step of placing the cells with the leads drawn out on the folding jigs connected to both sides of the pedestal so that the leads are placed on both sides of the lead tabs, respectively; A welding step of lowering a welding head to weld the lead tabs to the terminals of the cap plate and the leads of the cells, respectively; Placing a first bending bar on the lead tab, and folding the folding jig to bend the lead tab at a right angle; A buffer section for removing the first bending bar from the lead tab and positioning the second bending bar instead, and then advancing a plate-shaped forming tool on both sides to form a cushioning section having a U-shaped cross section on a vertical surface of the lead tab. It is achieved by constructing a molding step.
  • the present invention as described above can be implemented in a form that can be easily inserted into the can of the secondary battery by automatically folding a plurality of cells to improve the manufacturing convenience, while the terminal of the lead and the cap plate of the cell together with such folding
  • By forming a buffer section of approximately U-shaped cross section in the lead tab to be interconnected it is possible to prevent damage to the terminal due to vibration in advance, thereby maximizing the durability and market competitiveness of the product.
  • FIG. 1 is a perspective view showing a typical can type secondary battery
  • FIG. 2 is an exploded perspective view showing a typical can type secondary battery
  • FIG. 3 is a perspective view showing a folding device of a secondary battery cell of the present invention.
  • FIG. 4 is a perspective view showing a state immediately before a folding step in the folding method for a secondary battery cell of the present invention
  • FIG. 5 is a perspective view showing a state immediately after the folding step in the folding method for a secondary battery cell of the present invention
  • FIG. 6 is a perspective view of a main portion showing a state immediately after the folding step in the folding method for a secondary battery cell of the present invention
  • FIG. 7 is a perspective view showing a buffer section forming step in the folding method of a secondary battery cell of the present invention.
  • FIG. 8 is a bottom perspective view showing a buffer section forming step in the folding method of a secondary battery cell of the present invention.
  • FIG. 9 is a plan view showing a connecting member and a guide rail in a folding device for a secondary battery cell of the present invention.
  • FIG. 10 is an enlarged perspective view of a main portion showing a lead tab in which a buffer section is formed according to a folding device and method for a secondary battery cell of the present invention
  • FIG. 11 is a flowchart showing a folding method of a cell for a secondary battery of the present invention.
  • pedestal 110 support member
  • connecting member 820 guide rail
  • Figure 3 is a perspective view showing a folding device of a secondary battery cell of the present invention
  • Figure 4 is a perspective view showing a state immediately before the folding step in the folding method of a secondary battery cell of the present invention
  • Figure 5 is a present invention It is a perspective view which shows the state immediately after a folding step in the folding method of the secondary battery cells.
  • FIG. 6 is a principal part perspective view showing a state immediately after the folding step in the folding method for a secondary battery cell of the present invention.
  • FIG. 7 is a perspective view showing a buffer section forming step in the folding method of the secondary battery cell of the present invention
  • Figure 8 is a bottom surface showing a buffer section forming step in the folding method of the secondary battery cell of the present invention. Perspective view.
  • FIG. 9 is a plan view illustrating a connecting member and a guide rail in a folding device for a secondary battery cell of the present invention
  • FIG. 10 illustrates a lead tab in which a buffer section is formed according to the folding device and method for a secondary battery cell of the present invention. It is an enlarged perspective view of main part shown
  • FIG. 11 is a flowchart which shows the folding method of the cell for secondary batteries of this invention.
  • first and / or second in the present invention may be used to describe various components, but the components are not limited to the terms.
  • the above terms are for the purpose of distinguishing one component from other components only, for example, within the scope not departing from the scope of the right according to the concept of the present invention, the first component may be called a second component, Similarly, the second component may also be referred to as the first component.
  • the folding device and method of the secondary battery cell of the present invention can be implemented in a form that can be easily inserted into the can of the secondary battery by automatically folding a plurality of cells 20, while improving the manufacturing convenience, such folding and Damage to the terminal due to vibration by forming a buffer section 31 of approximately U-shaped cross section in the lead tab 30 interconnecting the lead 21 of the cell 20 and the terminal 11 of the cap plate 10 together. It can be prevented in advance, so that the durability and market competitiveness of the product can be maximized.
  • the folding device for the secondary battery cell of the present invention includes: a pedestal 100 on which the cap plate 10 rests so that the terminal 11 is exposed upward; Folding jigs 200 and 300 which are connected to both sides of the pedestal 100 so that the cells 20 into which the leads 21 are drawn toward the center are respectively seated; A welding head 400 for selectively lowering and welding the lead tab 30 to the terminal 11 of the cap plate 10 and the lead 21 of the cell 20; The first bending bar for selectively bending the lead tab 30 is placed on the lead tab 30 while the folding jig 200, 300 is folded at a right angle with respect to the pedestal 100.
  • the folding device of the secondary battery cell of the present invention is largely the pedestal 100, the folding jig 200, 300, the welding head 400, the first bending bar 500, the forming member 600, and Two bending bars 700 are included.
  • the folding jig 200, 300, the first bending bar 500, the molding member 600, and the second bending bar 700 are arranged in pairs symmetrically with respect to the pedestal 100. Will be.
  • the cell 20 used for manufacturing a can type secondary battery is a winding cell in which a small capacity unit cell is wound or a stacking cell stacked in multiple layers as illustrated in the drawing. )would.
  • a plurality of small capacity unit cells 20 are welded to the cap plate 10 through the lead tab 30 and then folded to insert the can 40 into the can 40.
  • This lead tab 30 is characterized in that the buffer section 31 is formed as shown in FIG.
  • the pedestal 100 is formed of a substantially rectangular plate material and arranged horizontally, and the cap plate 10 corresponding to the lid of the can 40 is seated on the upper portion thereof.
  • the cap plate 10 is placed on the pedestal 100 in an inverted state as shown in FIG. 3 so that the bottom surface of the cap plate 10 faces upward.
  • the folding jig 200, 300 is configured to be folded on each side of the pedestal 100 in the form of wings, respectively, the folding jig 200, 300 is also approximately square, more preferably below
  • the cell 20 to be described is made of a plate of a shape that can be seated.
  • the folding jig 200 and 300 may form a frame in which a part of the plate is cut or a hole is formed for weight reduction.
  • the pedestal 100 and the folding jig 200, 300 are connected to each other through the same configuration as the hinge 101, the pedestal in the state where the folding jig 200, 300 is horizontally positioned
  • the plane is formed around 100.
  • the folding jig (200, 300) when the folding jig (200, 300) is rotated upward with respect to the hinge 101, it can be transformed into a substantially U-shape.
  • the cells 20 in which a plurality of small capacity unit cells in which the leads 21 are drawn toward the center are stacked are respectively seated.
  • the cell 20 is seated in a state in which the folding jig 200 and 300 are horizontally positioned. Then, as the folding jig 200 and 300 are folded vertically, the folding of the cell 20 is performed. It can be done.
  • the welding head 400 is configured in a shape corresponding to the cap plate 10 to be selectively lowered.
  • the welding head 400 performs welding on the lead tab 30 positioned between the terminal 11 of the cap plate 10 and the lead 21 of the cell 20.
  • This welding enables the connection between the terminal 11 of the cap plate 10 and the lead tab 30 and the connection between the lead tab 30 and the lead 21 of the cell 20.
  • the lead tab 30 has a function of supplying power from the terminal 11 of the cap plate 10 to the lead 21 of the cell 20 when the secondary battery is being charged, and the cell when the secondary battery is used. It serves to supply power from the lead 21 of the 20 to the terminal 11 of the cap plate 10.
  • the lead tab 30 has a certain amount of elasticity so as to be elastically deformable to a minute impact or vibration, but above all, is made of a substantially rectangular conductive metal sheet material capable of plastic deformation.
  • the welding head 400 may perform ultrasonic welding by oscillating ultrasonic waves, and may be connected to the elevating member 410 including an actuator.
  • the welding head 400 is preferably ultrasonic welding performed by the vibration energy and the appropriate pressure by the ultrasonic wave by oscillating the ultrasonic wave among various welding methods, it is possible to quickly and accurately weld within a short time .
  • the upper side surface of the welding head 400 is connected to the lifting member 410 including the actuator, the lifting of the welding head 400 is made in accordance with the operation of the lifting member 410.
  • the welding head 400 is maintained by the elevating member 410.
  • the welding head 400 is temporarily lowered by the elevating member 410 only when ultrasonic welding is performed.
  • the actuator constituting the elevating member 410 may be a hydraulic actuator using pneumatic or hydraulic pressure as a driving source, or may be a solenoid actuator using a power source as the driving source.
  • the first bending bar 500 is the lead tab 30 while the folding jig 200, 300 is folded at right angles relative to the pedestal 100, as shown in Figures 4 to 6 It is a configuration for bending the lead tab 30 at right angles selectively placed on the).
  • FIG. 5 illustrates the pedestal 100 and the folding jig 200, 300
  • the pedestal 100 and the folding jig 200, 300 are illustrated in FIGS. 4 and 6 to show the folding of the cell 20 in detail. ) Is not shown.
  • the first bending bar 500 may prevent the lead tab 30 from moving from the cap plate 10 while the cell 20 is folded, and both lower edge portions of the first bending bar 500 may be connected to the lead tab 30.
  • the first bending bar 500 is selectively placed on the pedestal 100.
  • the first bending bar 500 is spaced apart from the pedestal 100 as shown in FIG. 9.
  • the first bending bar 500 is positioned on the lead tab 30.
  • the molding member 600 corresponds to a configuration for entering the plate-shaped forming tool 610 in a horizontal state from both sides of the lead tab 30, as shown in Figure 7 and 8, the pedestal ( It consists of a pair of opposing sides on the basis of 100).
  • the forming tool 610 may be made of a plate having a predetermined thickness.
  • the molding tool 610 has a branched branch shape so as to plastically deform two lead tabs 30 respectively connected to the two terminals 11 of the cap plate 10 at one time.
  • the branched end of the forming tool 610 substantially forms the buffer section 31 in the lead tab 30, and the buffer section 31 corresponding to the thickness of the forming tool 610. Is formed.
  • the driving source of the forming member 600 may be a hydraulic actuator using pneumatic or hydraulic pressure, and a solenoid actuator using a power source as the driving source may be possible.
  • the forming tool 610 is spaced apart from the lead tab 30 by the forming member 600, but the forming tool 610 may be advanced by the forming member 600. In this case, an end portion of the forming tool 610 plastically deforms the lead tab 30 to form a buffer section 31.
  • the configuration supporting the inner side so that the buffer section 31 is formed in the lead tab 30 by the molding member 600 is the second bending bar 700 to be described below.
  • the second bending bar 700 is selectively placed on the lead tab 30 while the forming tool 610 enters a buffer section 31 having a U-shaped cross section on a vertical surface of the lead tab 30. Allow molding.
  • the second bending bar 700 is selectively placed on the pedestal 100 in place of the first bending bar 500 described above.
  • the second bending bar 700 is normally kept spaced apart from the pedestal 100, but when the forming tool 610 advances to form the buffer section 31, the second bending bar ( 700 is located on the pedestal 100.
  • the buffer section 31 may be molded in the lead tab 30 positioned between the forming tool 610 and the second bending bar 700.
  • the first bending bar 500 has a rectangular cross section;
  • the second bending bar 700 has a U-shaped cross section;
  • the first bending bar 500 and the second bending bar 700 may be connected to the transfer members 510 and 710 including actuators, respectively, for moving forward and backward.
  • the above-mentioned first bending bar 500 may have a substantially rectangular cross section in which both lower edge portions thereof are formed at right angles.
  • the lead tab 30 may be formed at a right angle.
  • the second bending bar 700 has a function of pressing the lead tab 30 on the cap plate 10 on the bottom thereof, and has a cross section of approximately U-shape so that the vertical surface thereof is positioned corresponding to the forming tool 610. It would be desirable.
  • the vertical surface of the second bending bar 700 restricts the advancing of the forming tool 610 from the inside, and the horizontal surface is The lead tab 30 will be prevented from moving.
  • the driving source of the conveying members 510 and 710 may also be a hydraulic actuator using pneumatic or hydraulic pressure, and a solenoid actuator using a power source as the driving source may be possible.
  • the first bending bar 500 needs to be positioned on the lead tab 30, and at the time of forming the buffer section 31, the lead tab ( The second bending bar 700 needs to be positioned on the 30 instead of the first bending bar 500.
  • the transfer member 510 connected to the first bending bar 500 and the transfer member 710 connected to the second bending bar 700 are connected to the connection member 810. It is preferable that the interconnection is guided so as to be linearly movable on the same guide rail 820, and can be aligned in alternation with the longitudinal direction of the pedestal 100.
  • the guide rails 820 are formed side by side on both sides of the pedestal 100, and the transfer member 510 and the second bending bar connected to the first bending bar 500 on the guide rails 820.
  • the conveying member 710 connected to 700 may be guided in a straight line.
  • the transfer member 510 of the first bending bar 500 and the transfer member 710 of the second bending bar 700 are connected to each other by a connecting member 810 such as a connecting rod.
  • the second bending bar 700 is spaced apart while the first bending bar 500 is positioned on the lead tab 30, or, conversely, the second bending bar 700 is positioned on the lead tab 30. It is easier to control the first bending bar 500 to be spaced apart while being located at.
  • the guide rail 820 may be a well-known configuration capable of guiding the transfer members 510 and 710 in a straight line.
  • the folding jig (200) 300 is connected to the folding member (210) (310) including the actuator can be folded; As shown in FIG. 7 and FIG. 8, the pedestal 100 may be connected to the supporting member 110 including the actuator to be elevated.
  • the folding members 210 and 310 are configured to horizontally position or vertically fold the above-described folding jigs 200 and 300.
  • a hydraulic actuator may be used using pneumatic or hydraulic pressure.
  • a solenoid actuator using a power source as a driving source may be possible.
  • the folding jig 200, 300 is operated according to the driving of the folding member 210, 310.
  • the stroke of the folding members 210 and 310 will need to be designed to be relatively long.
  • the folding members 210 and 310 are driven to fold the folding jig 200 and 300 horizontally or vertically, the above-described pedestal 100 is supported by the support member 110. It is possible to move up and down.
  • the support member 110 may be a hydraulic actuator using pneumatic or hydraulic pressure as a driving source, or may be a solenoid actuator using a power source as a driving source.
  • the pedestal 100 is raised by the support member 110 while the folding jig 200 and 300 are horizontally positioned, and the folding jig 200 and 300 is vertically folded.
  • the pedestal 100 is lowered by the support member 110.
  • the folding method of the secondary battery cell of the present invention as shown in Figure 11, the cap plate loading step (S10) for placing the cap plate 10 on the pedestal 100; A lead tab loading step (S20) of placing the lead tabs 30 on the terminals 11 on the cap plate 10;
  • the leads 20 are placed on the folding jigs 200 and 300 connected to both sides of the pedestal 100 so that the leads 21 are placed on both sides of the lead tab 30, respectively.
  • the cap plate 10 is placed on the pedestal 100 as shown in FIG.
  • the folding jig 200, 300 based on the pedestal 100 is maintained in a horizontal state by the folding member 210, 310.
  • cap plate 10 is placed in reverse so that the terminal 11 provided on the bottom thereof is exposed upward.
  • the loading of the cap plate 10 may be automatically performed by a known loading device (not shown).
  • the lead tab 30 is further placed on the cap plate 10 placed on the pedestal 100 through the cap plate loading step S10 described above.
  • the lead tabs 30 are placed on the two terminals 11 exposed to the cap plate 10, respectively.
  • the loading of the lead tab 30 is performed automatically by a known loading device.
  • the cells 20 are loaded on the folding jigs 200 and 300 positioned horizontally by the folding members 210 and 310.
  • the cell 20 loaded on the folding jig 200 and 300 is positioned so that the lead 21 faces the center, so that the lead 21 is placed on the lead tab 30.
  • the loading of the cell 20 may also be made automatically by a known loading device, not shown.
  • the welding head 400 positioned above the pedestal 100 is lowered through the elevating member 410, so that the cap plate 10 is sequentially stacked on the pedestal 100.
  • the terminal 11, the lead tab 30, and the lead 21 of the cell 20 are welded.
  • the center of the lead tab 30 and the terminal 11 of the cap plate 10 are ultrasonically welded to each other, and both edges of the lead tab 30 and the leads 21 of the cell 20 are ultrasonically welded. Ultrasonic welding with each other.
  • the first bending bar 500 maintains a state spaced apart from the pedestal 100 by the transfer member 510 before the folding step S50, and then, by the transfer member 510 in the folding step S50. By advancing, it is positioned on the lead tab 30.
  • the folding jigs 200 and 300 which are horizontally positioned on both sides of the pedestal 100 are vertically formed by the folding members 210 and 310. Will be folded.
  • the height of the pedestal 100 is lowered by the support member 110 connected to the lower portion of the pedestal 100, so that even if the stroke of the folding members 210 and 310 is relatively short, the folding jig 200 ( 300 may be positioned vertically relative to the pedestal (100).
  • the first bending bar 500 is removed from the lead tab 30, and the second bending bar 700 is positioned instead.
  • connection member 810 connects each other to the connection member 810 with respect to the transfer members 510 and 710 for advancing or retracting the first bending bar 500 and the second bending bar 700 as shown in FIG. It may be implemented by guiding the members 510 and 710 on the guide rail 820.
  • the second bending bar 700 is aligned with the pedestal 100. Will sort on.
  • the plate-shaped forming tool 610 is advanced on both sides as shown in FIGS. 7 and 8.
  • a buffer section 31 having a substantially U-shaped cross section is formed on a vertical surface of the lead tab 30.
  • the buffer section 31 is formed by a plate-shaped forming tool 610 positioned outside with the lead tab 30 therebetween and a second bending bar 700 located therein.
  • the folding cell 20 is inserted into the can 40 made of a metal material in a later step to complete the can-type secondary battery product.
  • the folding device and method of the secondary battery cell of the present invention can be implemented in a form that can be easily inserted into the can 40 of the secondary battery by automatically folding a plurality of small capacity unit cells 20 manufacturing convenience Has the effect of greatly improving.
  • the present invention as described above can be implemented in a form that can be easily inserted into the can of the secondary battery by automatically folding a plurality of cells to improve the manufacturing convenience, while the terminal of the lead and the cap plate of the cell together with such folding
  • By forming a buffer section of approximately U-shaped cross section in the lead tab to be interconnected it is possible to prevent damage to the terminal due to vibration in advance, thereby maximizing the durability and market competitiveness of the product.

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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)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

La présente invention concerne un appareil et un procédé pour plier des cellules pour une batterie secondaire et, plus particulièrement, un appareil et un procédé pour, lors de la fabrication d'une batterie secondaire de type boite, à souder une pluralité de cellules à une patte de connexion puis à plier de façon à permettre le stockage dans une boite, et la formation d'une section tampon dans la patte de connexion de telle sorte qu'un endommagement d'un terminal dû à une vibration puisse être empêché. L'appareil comprend : un support (100) sur lequel une plaque de recouvrement (10) est montée de telle sorte qu'un terminal (11) est exposé vers le haut; des gabarits de pliage (200, 300) reliés de façon pliable aux deux côtés du support (100) et sur lesquels des cellules (20), à partir desquelles des conducteurs (21) sont retirés vers le centre, sont respectivement montés; une tête de soudage (400) descendant et soudant sélectivement une patte de connexion (30) au terminal (11) de la plaque de recouvrement (10) et les conducteurs (21) des cellules (20); une première barre de pliage (500) placée de manière sélective sur la patte de connexion (30) et à plier perpendiculairement la patte de connexion (30) tandis que les gabarits de pliage (200, 300) sont pliés perpendiculairement par rapport au support (100); un élément de formation (600) pour insérer un outil de formation en forme de plaque (610) à partir des deux côtés de la patte de connexion (30); et une seconde barre de pliage (700) placée de manière sélective sur la patte de connexion (30) et formant une section tampon (31), qui a une section transversale en forme de c, sur le côté vertical de la patte de connexion (30) tandis que l'outil de formation (610) est inséré. Par conséquent, la présente invention permet une préparation pratique ainsi qu'une amélioration maximale de la durabilité et de la compétitivité du marché d'un produit.
PCT/KR2016/009293 2016-08-11 2016-08-23 Appareil et procédé de pliage de cellules pour batterie secondaire WO2018030570A1 (fr)

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KR102304208B1 (ko) * 2020-04-02 2021-09-24 주식회사 엠플러스 스톱핑 수단을 이용한 이차전지 패키징 시스템의 파우치 벤딩 가이드 장치 및 파우치 벤딩 방법
KR102304212B1 (ko) * 2020-04-02 2021-09-24 주식회사 엠플러스 이차전지 패키징 시스템의 파우치 벤딩 가이드 장치 및 파우치 벤딩 방법
KR20220017643A (ko) * 2020-08-05 2022-02-14 주식회사 엘지에너지솔루션 전지 모듈, 이를 포함하는 전지 팩 및 전지 모듈 제조 방법
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Publication number Priority date Publication date Assignee Title
WO2021234106A1 (fr) 2020-05-20 2021-11-25 Saft Ensemble électrochimique, batterie et procédé correspondants
FR3110773A1 (fr) 2020-05-20 2021-11-26 Saft Ensemble électrochimique, batterie et procédé correspondants

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KR20180017896A (ko) 2018-02-21
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