WO2012137912A1 - 積層装置および積層方法 - Google Patents
積層装置および積層方法 Download PDFInfo
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- WO2012137912A1 WO2012137912A1 PCT/JP2012/059487 JP2012059487W WO2012137912A1 WO 2012137912 A1 WO2012137912 A1 WO 2012137912A1 JP 2012059487 W JP2012059487 W JP 2012059487W WO 2012137912 A1 WO2012137912 A1 WO 2012137912A1
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- separator
- electrode
- positive electrode
- unit
- transport unit
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
- B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold at least one of the parts to be joined
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/80—Rotatable transfer means for loading or unloading purposes, i.e. turret transfer means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/81266—Optical properties, e.g. transparency, reflectivity
- B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
- B29C66/81429—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth comprising a single tooth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
- B29C66/83541—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement
- B29C66/83543—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws flying jaws, e.g. jaws mounted on crank mechanisms or following a hand over hand movement cooperating flying jaws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/90—Measuring or controlling the joining process
- B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
- B29C66/967—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes
- B29C66/9672—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving special data inputs or special data outputs, e.g. for monitoring purposes involving special data inputs, e.g. involving barcodes, RFID tags
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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
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
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- 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
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- 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
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/5313—Means to assemble electrical device
- Y10T29/53135—Storage cell or battery
Definitions
- the present invention relates to a laminating apparatus and a laminating method.
- a laminated battery is formed by forming a positive electrode, a negative electrode (hereinafter, the positive electrode and the negative electrode may be referred to as electrodes) and a separator in a sheet shape, and alternately stacking the positive electrode, the separator, the negative electrode, and the separator in this order. .
- Patent Document 1 Japanese Patent Publication No. 2007-329111
- the bagged positive electrode is taken out from between the cradle and the holding plate, and this bagged positive electrode is laminated alternately with the negative electrode, so that the positive electrode and separator
- the battery element is formed by alternately stacking the negative electrode and the separator in this order.
- the present invention has been made to solve the above problems, and according to the present invention, it is possible to provide a laminating apparatus and a laminating method capable of shortening the battery manufacturing time by laminating separators and electrodes at high speed. . *
- the laminating apparatus of the present invention includes a separator transport unit that transports a separator having a predetermined shape and an electrode transport unit that transports an electrode having a predetermined shape. And this lamination apparatus conveys so that an eaves electrode and a separator may overlap in a predetermined position, and it separates the separator from a separator conveyance part one by one while delivering a separator to the electrode from the downstream of a conveyance direction, and delivers it to the electrode .
- the separator is transported in a state where a separator having a predetermined shape is held by the separator transport unit, and the separator and the electrode are transported so as to overlap at a predetermined position by the electrode transport unit. Then, in this stacking method, both the saddle electrode and the separator are transported and moved to deliver the separator to the electrode from the downstream side in the transport direction, and the separator is sequentially detached from the separator transport section and stacked on the electrode.
- the present invention relates to a laminating apparatus and a laminating method for assembling a power generation element of a battery, which is applied to a part of a battery battery manufacturing process. ⁇ Before describing a stacking apparatus according to an embodiment of the present invention, the structure of a battery will be described.
- FIG. 1 is a perspective view showing the appearance of a lithium ion secondary battery
- FIG. 2 is an exploded perspective view of the lithium ion secondary battery
- FIG. 3 is a plan view of a negative electrode and a packaged positive electrode.
- the lithium ion secondary battery 10 has a flat rectangular shape, and the positive electrode lead 11 and the negative electrode lead 12 are led out from the same end of the exterior material 13.
- a power generation element (battery element) 15 in which a charge / discharge reaction proceeds is accommodated in the exterior member 13.
- the power generation element 15 is formed by alternately stacking the packaged positive electrode 20 and the negative electrode 30.
- the packaged positive electrode 20 has a rectangular positive electrode 22 in which a positive electrode active material layer is formed on both surfaces of a very thin sheet-shaped positive electrode current collector (current collector foil). It is sandwiched between the shape separators 40.
- the two separators 40 are joined to each other by a joining portion 42 at an end portion, and are formed in a bag shape.
- the positive electrode tab 23 of the positive electrode 22 is drawn from a side 44 ⁇ / b> A that is formed linearly, and an engaging portion 43 that partially protrudes is formed on a side 44 ⁇ / b> B opposite to the side 44 ⁇ / b> A.
- the engaging portion 43 plays a role of fixing the battery element 15 to the exterior member 13 by engaging with the exterior member 13 in the exterior member 13.
- a positive electrode active material layer 24 is formed in a portion other than the positive electrode tab 23.
- the negative electrode 30 is formed in a rectangular shape, and a negative electrode active material layer 34 is formed on both surfaces of a very thin sheet-like negative electrode current collector (current collector foil).
- a negative electrode active material layer 34 is formed in a portion other than the negative electrode tab 33.
- the negative electrode active material layer 34 is formed to be slightly larger than the positive electrode active material layer 24 of the positive electrode 22 in plan view.
- the method itself for manufacturing the lithium ion secondary battery by alternately laminating the packaged positive electrode 20 and the negative electrode 30 is a general method for manufacturing a lithium secondary battery, a detailed description is omitted.
- the present laminating apparatus includes a positive electrode cutting unit 100 that cuts out the positive electrode 22 from the positive electrode sheet material D, an electrode transport unit 200 that transports the cut out positive electrode 22, and an electrode transport unit 200.
- a rotation conveyance unit 300 provided on the downstream side in the conveyance direction, a welding unit 400 provided on both sides of the rotation conveyance unit 300, and a control device 500 (control unit) for controlling the entire apparatus are provided.
- the direction in which the positive electrode 22 is conveyed will be described as a conveyance direction X
- the direction perpendicular to the surface of the positive electrode 22 will be referred to as the vertical direction Z
- the direction that intersects the vertical direction Z and the conveyance direction X will be described as the width direction Y.
- the positive electrode cutting part 100 cuts out the positive electrode 22 (sheet member) having a predetermined shape by cutting the positive electrode sheet material D wound in a roll shape into a predetermined shape by punching or the like.
- the positive electrode 22 cut out here has a rectangular shape and has a positive electrode tab 23.
- the electrode transport unit 200 sucks and holds the positive electrode 22 on the conveyer 210 and conveys the positive electrode 22 cut out by the positive electrode cutting unit 100, and the rotary transport unit 300. And a suction conveyance unit 220 for conveyance to the (separator conveyance unit). Above the heel conveyor 210, an imaging camera 230 (position detection unit) heel and an illumination 231 are provided.
- the conveyor 210 has an air-permeable suction belt 211 formed in an endless shape, two rotating shafts 212 that are arranged side by side in the conveyance direction and rotatably hold the suction belt 211, and are arranged inside the suction belt 211.
- a plurality of air suction holes 214 are formed in the suction belt 211, and the negative pressure generator 213 sucks air through the air suction holes 214, so that the thin positive electrode 22 that is difficult to convey is placed on the conveyor 210. It can be conveyed while being sucked and held on a flat installation surface 215 (reference surface).
- the installation surface 215 of the suction belt 211 has a color tone in which the boundary with the positive electrode 22 can be easily recognized by the imaging camera 230, and in this embodiment, it is white.
- the conveyor 210 is applied as a flat installation surface 215 that can install the positive electrode 22 in a substantially horizontal state, but other devices may be used.
- the pressing unit 240 includes a clamper 242 that approaches or separates from an installation surface 215 (reference surface) on the suction belt 211 by an actuator 241 controlled by the control device 500.
- the clamper 242 corrects the distortion of the positive electrode 22 by pressing the positive electrode 22 against the installation surface 215.
- the positive electrode 22 cut out from the sheet material D wound in the form of a kite roll is likely to curl with the kite curl remaining.
- the positive electrode 22, the negative electrode 30, and the separator 40 are very thin foil-like materials, and are particularly easily deformed in a large battery such as an automobile battery.
- the suction belt 211 sucks and holds a member in contact with the installation surface 215, but usually does not have a suction force enough to attract a part away from the installation surface 215.
- the deformation of the positive electrode 22 is corrected by pressing the positive electrode 22 against the installation surface 215 by the heel clamper 242.
- the position of the positive electrode 22 can be grasped with high accuracy by the imaging camera 230, the suction position by the suction transport unit 220 can be set with high precision, and the processing accuracy in the subsequent process is improved.
- the clamper 242 presses a long portion along the two side edges H2 and H4 (edges) along the conveyance direction of the positive electrode 22 on the suction belt 211 in order to secure the adsorption position of the positive electrode 22 by the adsorption conveyance unit 220. Further, it is formed so as to be able to image the four side sides H1 to H4 (edge portions) of the positive electrode 22 by the imaging camera 230, and further to the inside (center side of the positive electrode 22) than the edge portions of the heel 4 side sides H1 to H4. Can be pressed.
- the clamper 242 is formed of a transparent member so that the pressed positive electrode 22 can be imaged through the clamper 242.
- acrylic resin or glass can be applied to the transparent member, but the material is not particularly limited, and can be set as appropriate according to the frequency of the illumination 231 and the imaging characteristics of the imaging camera 230.
- the suction conveyance unit 220 is connected to a driving device (not shown) and is movable, and the suction conveyance unit 220 is provided at a lower portion of the device main body 221 and connected to a negative pressure supply source (not shown) to thereby obtain a suction force. And a suction head 222 to be exhibited.
- the suction head 222 can move three-dimensionally in the vertical direction Z, the transport direction X, and the width direction Y according to the operation of the driving device, and can rotate along a horizontal plane.
- the imaging camera 230 provided above the conveyor 210 is configured to capture an image under irradiation by the illumination 231 after the positive electrode 22 conveyed by the conveyor 210 is pressed and held by the clamper 242.
- the imaging camera 230 transmits a signal based on the image of the positive electrode 22 captured when the positive electrode 22 is transported to a predetermined position and stopped to the control device 500.
- the control device 500 calculates the position and state of the positive electrode 22 from the signal, controls the movement of the drive device of the suction conveyance unit 220 based on the calculation result, and appropriately adjusts the position and posture of the positive electrode 22. It corrects and it conveys to the clearance gap 340 (refer FIG. 5) of the rotational conveyance part 300 mentioned later.
- the conveyor 210 is stopped at a predetermined position, and the edges of the side areas E1 to E4 corresponding to the four sides of the positive electrode 22 are detected from the image captured by the imaging camera 230.
- the edge can be detected from the difference in color tone between the suction belt 211 and the positive electrode 22.
- approximate straight lines L1 to L4 of the four sides are calculated using a least square method or the like.
- corners K1 to K4 at the four corners which are intersections of the approximate straight lines L1 to L4 of the four sides are calculated, and an average value of the four corners K1 to K4 is calculated.
- the coordinates of the heel electrode center point O are represented by the coordinates in the transport direction X and the width direction Y.
- the inclination angle ⁇ on the horizontal plane (reference plane) of the positive electrode 22 is calculated from the average value of one or both of the approximate lines L2 and L4 of the two side edges H2 and H4 along the conveyance direction of the positive electrode 22.
- a position and inclination correction amount with respect to the normal position of the positive electrode 22 on the horizontal plane is calculated, and the suction conveyance unit 220 (position correction unit) is corrected so as to correct the correction amount.
- the position and orientation of the positive electrode 22 are corrected to be conveyed to the gap 340 of the rotary conveyance unit 300.
- the position and state of the positive electrode 22 are recognized from the image acquired by the imaging camera 230, but other sensors may be used, such as a contact sensor that detects the tip of the positive electrode 22, and the like. Thus, the position of the positive electrode 22 can be recognized.
- the suction conveyance unit 220 is vertically lowered by the suction head 222 in a state where the positive electrode 22 is conveyed to a predetermined position of the conveyor 210 and the side of the positive electrode 22 is pressed by the clamper 242 to correct the shape of the positive electrode 22.
- the positive electrode 22 is adsorbed and held. Then, after the restraint of the positive electrode 22 by the clamper 242 is released and the positive electrode 22 is lifted while maintaining the substantially horizontal state, the position and posture of the positive electrode 22 are appropriately corrected according to the correction amount calculated, and the rotary conveyance unit It is conveyed to the gap 340 of 300.
- an introduction support portion 250 is provided in the vicinity of the gap 340 of the rotary conveyance unit 300 so as to sandwich the upper and lower sides of the gap 340 and assist the introduction of the positive electrode 22 into the rotary conveyance unit 300.
- the introduction support unit 250 includes a plurality of roller groups, supports the positive electrode 22 conveyed by the suction conveyance unit 220, and sends the positive electrode 22 to the gap 340 of the rotary conveyance unit 300.
- the introduction support portion 250 includes an upper introduction support portion 251 composed of a single roller and a lower introduction support portion 252 composed of a plurality of rollers.
- the upper introduction support portion 251 is movable in the vertical direction Z, and is moved downward from the “open state” to move the positive electrode 22 between the lower introduction support portion 252 and the roller on the most downstream side in the conveyance direction.
- the clamped “closed state” can be achieved, and the clamped positive electrode 22 can be sent out to the gap 340 by being rotationally driven.
- the lower introduction support portion 252 rises and becomes substantially horizontal when the positive electrode 22 is delivered from the suction conveyance portion 220 from the “open state” in which the roller on the upstream side in the conveyance direction is obliquely lowered.
- the positive electrode 22 is supported so as to be transportable (see FIG. 14).
- the roller on the most downstream side in the conveyance direction that forms a pair with the roller of the upper introduction support portion 251 can be driven to rotate, and rotates with the positive electrode 22 sandwiched between the upper introduction support portion 251.
- the sandwiched positive electrode 22 can be sent out to the gap 340.
- the upper introduction support portion 251 is lowered to sandwich the tip portion of the positive electrode 22 between the lower introduction support portion 252 and the lower introduction support portion.
- the roller 252 is raised to a substantially horizontal state to support the lower surface of the positive electrode 22.
- the positive electrode 22 is released from the suction head 222 of the suction conveyance unit 220, and the positive electrode 22 is sequentially fed into the gap 340 of the rotation conveyance unit 300 by the rotation of the introduction support unit 250.
- the rotary conveyance unit 300 (separator conveyance unit) is laminated on the positive electrode 22 conveyed by the adsorption conveyance unit 220 while cutting the separator 40 from the sheet-like separator material S.
- the rotary conveyance unit 300 includes a pair of upper and lower laminated drums 310 (first separator conveyance unit, cylindrical rotator) formed in a columnar shape, and a stacked drum 320 (second separator conveyance unit, columnar rotator). .
- the pair of upper and lower laminated drums 310 and ridges 320 are arranged in parallel to each other so that the rotation axis is orthogonal to the conveyance direction X, the outer circumferential surfaces 311 face each other with a predetermined gap 340 therebetween, and a symmetrical structure with respect to the horizontal plane Consists of.
- An adsorption part capable of adsorbing the separator 40 is formed on the outer peripheral surface 311 of each lamination drum 310, 320, and an inner structure part 330 provided non-rotatably is provided inside the lamination drums 310, 320.
- the width (length in the rotation axis direction) of the stacking drum 310 and the rod 320 is such that both edge portions of the separator material S protrude from both end portions of the stacking drum 310 and the rod 320.
- the upper and lower laminated drums 310 and ridges 320 are arranged with a gap 340 therebetween, and the gap 340 rotates in the same direction toward the downstream side in the transport direction X. That is, the stacking drum 310 located on the upper side rotates counterclockwise on the paper surface of FIG. 10 to convey the separator 40 sucked and held on the outer peripheral surface 311 to the gap 340. Further, the lower layered drum 320 is rotated clockwise on the paper surface of FIG. 10 to convey the separator 40 sucked and held on the outer peripheral surface 311 to the gap 340.
- the upper and lower laminated drums 310 and 320 are driven by a drive motor (not shown) whose rotation is controlled by the control device 500.
- the laminated drums 310 and ridges 320 are formed with innumerable vent holes 312 on the outer peripheral surface 311, and recessed portions into which separator cutters 351 (cutting blades) provided in a cutting portion 350 described later can enter a part of the circumferential direction. 313 (receiving part) is formed.
- the concave portions 313 are formed at two positions of the laminated drum 310 and the flange 320 every 180 degrees.
- the two recesses 313 are provided in the circumferential direction in order to cut out the two separators 40 each time the stacking drum 310 and the rod 320 rotate once, and the separator cut out during one rotation of the stacking drum 310 and the rod 320. According to the number of 40, the number of circumferential recesses 313 can be changed.
- a feeding roller section 360 (lock mechanism) that supplies or restrains the sheet-like separator material S, and the outer peripheral surface 311 of the lamination drums 310 and 320.
- a cutting part 350 for cutting the upper separator material S and a cut piece adsorbing part 370 for collecting an unnecessary cut piece S ′ (see FIG. 15) generated by cutting by the cutting part 350 are provided.
- a small sending roller 360 formed in a cylindrical shape is provided obliquely above and obliquely downstream of the rotary conveyance unit 300 in the conveyance direction.
- a pair of delivery rollers 361 and 362 formed in a columnar shape are disposed with a predetermined gap on the obliquely upper side and the obliquely lower side on the downstream side in the conveyance direction of the rotary conveyance unit 300.
- the feed roller unit 360 rotates and feeds a continuous separator material S conveyed from a separator roll (not shown) to the rotary conveyance unit 300 while sandwiching the separator material S between the gaps, and stops feeding by stopping the dredging.
- the separator material S is restrained.
- the feed rollers 361 and the collar 362 are controlled by the control device 500 so as to feed the separator material S to the rotary conveyance unit 300 at a predetermined timing.
- the cutting unit 350 includes separator cutters 351 above and below the rotary conveyance unit 300, respectively.
- the separator cutter 351 is a thermal cutter that melts the separator material S adsorbed and held on the outer peripheral surface 311 of the laminated drums 310 and 320 and cuts it into a predetermined shape.
- the separator 40 when the separator 40 is sucked and held on the outer peripheral surface 311 of the stacking drum 310 and the rod 320, and the concave portion 313 of the stacking drum 310 and the rod 320 moves to a position facing the separator cutter 351, the separator cutter 351 is controlled. In response to a command from the apparatus 500, it moves so as to enter the recess 313 of the stacking drum 310 and the rod 320, and the separator 40 is melted and cut into a predetermined shape as shown in FIG.
- the rear end of the separator 40 cut out first is set as a side 44B where the engaging portion 43 is formed, and the front end of the separator 40 cut out next is set as a straight side 44A.
- the cut piece adsorbing portion 370 includes a cutter adsorbing head 371 that exerts an adsorbing force, and moves close to the cut portion at the timing when the separator cutter 351 cuts out the separator material S and then retreats from the recess 313.
- the excess cut piece S ′ of the separator 40 cut out by the separator cutter 351 is sucked and held.
- the cutter suction head 371 is separated from the outer peripheral surface 311 of the stacking drums 310 and 320 while the cut piece S ′ is sucked and held.
- the cut piece S ′ may come into contact with the separator 40 or the separator material S remaining on the outer peripheral surface 311 in the suction process.
- the separator 40 and the separator material S can be recovered while suppressing damage to the cut piece S ′.
- the inner structure 330 provided inside each of the laminated drums 310 and 320 has a first negative pressure chamber 331 capable of adjusting the strength of the negative pressure according to the process during operation of the apparatus, and negative pressure during operation of the apparatus.
- a second negative pressure chamber 332 that is kept substantially constant is formed non-rotatably.
- the first negative pressure chamber 331 and the second negative pressure chamber 332 are connected to a negative pressure supply device 333 provided with a pressure adjustment valve, and the internal pressure is adjusted by controlling the negative pressure supply device 333 by the control device 500. Is possible.
- the first negative pressure chamber 331 and the second negative pressure chamber 332 are separated from the outside by the inner peripheral surfaces of the laminated drums 310 and 320, and thus, through the vent holes 312 formed in the laminated drums 310 and 320, A non-rotating negative pressure region is generated on the outer peripheral surface 311 of the stacking drum 310 and the flange 320. This area does not rotate even if the stacking drum 310 and the rod 320 are rotated.
- the first negative pressure chamber 331 is formed in a range from a position corresponding to the feed roller unit 360 to a position corresponding to the separator cutter 351 in the rotation direction of the stacking drum 310 and the rod 320.
- the second negative pressure chamber 332 is formed in a range of approximately 180 degrees from a position corresponding to the separator cutter 351 to a position corresponding to the gap 340 in the rotation direction of the stacking drums 310 and 320.
- a sliding region A1 (adsorptive force adjustment region) where the negative pressure is adjusted and changed at a position corresponding to the first negative pressure chamber 331, and the second negative pressure chamber 332 are disposed. Is formed at the position corresponding to the suction area A2 for sucking and holding the separator material S or the cut-out separator 40 with a substantially constant negative pressure (see FIG. 11).
- the suction region A2 has a strong suction force, and can hold the separator material S or the cut-out separator 40 with the suction force and rotate them by the rotation of the stacking drums 310 and 320.
- the sliding area A1 can be set to the same suction force as that of the suction area A2 to rotate the separator 40, and the separator material S is not separated from the outer peripheral surface 311 by reducing the suction force.
- the separator material S can be slid on the outer peripheral surface 311 without rotating when the stacking drums 310 and 320 rotate while being held to the extent.
- the range from the position corresponding to the gap 340 of the inner structure portion 330 to the position corresponding to the feeding roller portion 360 in the rotation direction of the laminated drum 310 and the rod 320 is the first negative pressure chamber 331 and the second negative pressure chamber 331. Since none of the pressure chambers 332 is provided, a non-adsorption region A3 where no negative pressure is generated and the separator 40 is not adsorbed is formed non-rotatably at a portion corresponding to this range of the outer peripheral surface 311.
- the rotary conveyance unit 300 sucks and holds the separator 40 while cutting it out with the lamination drums 310 and 320, conveys it, and synchronizes the rotation of the lamination drum 310 and 320 with the conveyance speed of the electrodes 22 by the electrode conveyance unit 200.
- the separators 40 are sequentially stacked on both surfaces of the positive electrode 22 from the downstream side in the transport direction X. At this time, the electrode 22 is introduced into the tangential direction T (see FIG. 10) of the cylindrical laminated drums 310 and 320 by the suction conveyance unit 220.
- the welding part 400 welds the both edge parts of the separator 40 laminated
- the welding portion 400 includes a pair of upper and lower welding machines 410 and 420 at both ends in the rotation axis direction of the laminated drum 310 and the rod 320, respectively.
- the upper and lower welding machines 410 and 420 are provided with a plurality of protrusions 411 and 412 along the conveying direction X on the opposing surfaces, and heating the separators 40 while pressurizing the separators 40 by the opposing protrusions 411 and 421. It can be welded.
- the welding machines 410 and ridges 420 are movable in the conveying direction X and the vertical direction Z, and move at the same speed in the conveying direction X so as to be synchronized with the separator 40 and the positive electrode 22 that are conveyed and stacked in the gap 340.
- the stacked separators 40 are joined to each other by the protrusions 411 and 421 that approach each other and face each other to form a joint 42.
- the welding machines 410 and 420 are separated from each other, moved upstream in the transport direction, and then moved again in the transport direction X at the same speed. Then, the other joints 42 are welded in close proximity. After all the joining portions 42 are joined, the welding machine 410 and the rivet 420 are separated from each other, and the produced packaged positive electrode 2 0 is opened.
- separators 40 it is not limited to the above-mentioned structure, for example, welding while heating between a pair of rotating heating rollers, or crimping only by pressing without heating, It is also possible to join using an adhesive.
- the control device 500 includes a positive electrode cutting unit 100, an imaging camera 230, a pressing unit 240, a conveyor 210, a suction conveyance unit 220, an introduction support unit 250, a delivery roller unit 360, a stacking drum 310 and 320, a cutting unit. All of the part 350, the cut piece adsorbing part 370, the negative pressure supply device 333, and the welding part 400 can be integrated and controlled, and can be operated while synchronizing each of the scissors. In addition, the control apparatus 500 can also control collectively including the other apparatus for comprising a battery.
- the positive electrode sheet material D wound in a roll shape is cut by the positive electrode cutting unit 100 to form the positive electrode 22.
- the cut out positive electrode 22 is placed on the installation surface 215 of the conveyor 210 by a suction pad or a conveyor (not shown).
- the feeding roller unit 360 holds a single continuous separator material S fed from the separator roll in a gap and restrains it. Therefore, the front end portion of the separator material S is located at the uppermost portion or the lowermost portion of the rotary conveyance unit 300 as shown in FIG.
- the negative pressure is set low, and the separator drums S, 320 are slid on the inner surface of the separator material S without the separator material S being pulled out in the sliding region A1 of the outer peripheral surface 311. It is rotating.
- the separator 40 that has been cut out already has already been stacked as shown by a two-dot chain line in FIG. 320 are adsorbed onto the outer peripheral surface 311 and conveyed.
- the conveyor 210 on which the positive electrode 22 is placed has the positive electrode 22 on the installation surface 215 of the suction belt 211 adsorbed and held by the suction belt 211, while suppressing the occurrence of curling and the like in the conveying direction X
- the positive electrodes 22 may be conveyed side by side (tabs are arranged in the width direction Y).
- the pressing portion 240 is operated to press the long part along the two side edges H2 and H4 of the positive electrode 22 by the clamper 242 (see FIGS. 8 and 9). This corrects deformation such as rounding of the positive electrode 22. Then, when the portion of the positive electrode 22 that has floated from the suction belt 211 approaches the suction belt 211, it is sucked by the suction belt 211, and the positive electrode 22 adheres tightly on the installation surface 215.
- the imaging camera 230 images the four sides H1 to H4 of the positive electrode 22 and transmits a predetermined signal to the control device 500.
- the control device 500 calculates the coordinates of the electrode center point O and the inclination angle ⁇ from the received signal by the method described above, and calculates the correction amount of the position and inclination of the positive electrode 22 with respect to the normal position.
- the clamper 242 presses the inner side (center side of the positive electrode 22) from the edge of the four side edges H1 to H4 of the positive electrode 22, so that the imaging camera 230 reliably secures the four side edges H1 to H4. Can be imaged.
- the clamper 242 is formed of a transparent material, the positive electrode 22 can be imaged through the clamper 242 even if the clamper 242 enters the imaging range.
- the suction head 222 of the suction conveyance unit 220 located above the suction belt 211 is lowered, and the suction head 222 is pressed against the upper surface of the positive electrode 22.
- the positive electrode 22 is sucked and held by the suction head 222.
- the positive electrode 22 is also adsorbed by the suction belt 211.
- the adsorption head 222 By setting the adsorption force of the adsorption head 222 higher than that of the suction belt 211 or by temporarily stopping the adsorption by the suction belt 211, the adsorption head 222 The positive electrode 22 can be pulled away from the suction belt 211.
- the control device 500 performs the first operation.
- the negative pressure in the negative pressure chamber 331 is increased to increase the suction force of the sliding area A1, and the feed roller unit 360 is rotated to sequentially feed the separator material S between the pair of feed rollers 361 and 362. Is started (see T1 in FIG. 19).
- the separator material S is adsorbed and held on the outer peripheral surface 311 of the lamination drums 310 and 320 in the sliding area A1 and the adsorption area A2 where the negative pressure is increased, and the separator material S is sequentially pulled out according to the rotation of the lamination drum 310 and the rod 320.
- the predetermined angle ⁇ is an angle corresponding to the length of one separator 40 to be cut out.
- the suction conveyance unit 220 moves up in the conveyance direction X after being lifted while maintaining the positive electrode 22 in a substantially horizontal state, and conveys it to the gap 340 of the rotary conveyance unit 300.
- the position and orientation of the positive electrode 22 is determined based on the correction amount during the period from when the positive device 22 is adsorbed to when it is delivered to the rotary conveyance unit 300 when the driving device is controlled by the control device 500. Correct. As a result, the position of the positive electrode 22 is always maintained with high accuracy, and the accuracy of lamination in a later process is improved.
- the introduction support unit 250 When the positive electrode 22 transported by the suction transport unit 220 reaches the introduction support unit 250 in the “open state” provided in front of the gap 340 of the rotary transport unit 300, the introduction support unit 250, as shown in FIG.
- the upper introduction support portion 251 is lowered to sandwich the tip of the positive electrode 22 with the lower introduction support portion 252 and the roller of the lower introduction support portion 252 is raised to be in a substantially horizontal state to be in a “closed state”.
- the lower surface of the positive electrode 22 is supported. Thereafter, the positive electrode 22 is released from the suction head 222 of the suction conveyance unit 220, and the positive electrode 22 is sequentially fed into the gap 340 of the rotary conveyance unit 300 by the rotation of the introduction support unit 250.
- the rotation of the stacking drums 310 and 320 is stopped (see T2 in FIG. 19).
- the separator material S is drawn on the stacking drum 310 and the ridge 320 by an angle ⁇ corresponding to the separator 40 for one sheet, and the concave portion 313 is positioned facing the separator cutter 351 of the cutting portion 350.
- the separator cutter 351 is pressed against the separator material S according to a command from the control device 500, and the separator 40 is cut into a predetermined shape to cut out the separator 40. Since the cut-out separator 40 is located in the adsorption region A2 (see FIG. 11) of the stacking drum 310 and the rod 320, the separator 40 is sucked and held on the stacking drum 310 and the rod 320.
- the positive electrode 22 is sequentially fed into the gap 340 between the lamination drums 310 and 320 by the rotation of the introduction support unit 250. Further, the stacking drum 310 and the rod 320 are rotated again (see T4 in FIG. 19), and the cut separator 40 is rotated while being adsorbed, and is conveyed to the gap 340.
- the negative pressure in the first negative pressure chamber 331 is reduced by the control device 500 to weaken the suction force in the sliding area A1, and the separator material S is dripped by the eaves and the feed roller unit 360. Is constrained (see FIG. 18). As a result, the stacking drum 310 and the flange 320 rotate while sliding on the inner surface of the separator material S without the separator 40 being pulled out in the sliding region A1 of the outer peripheral surface 311.
- the two separators 40 are first stacked, and then the separator 40 is stacked on both surfaces of the leading end of the positive electrode 22.
- the transport positions (transport timing) of the rotary transport unit 300 and the suction transport unit 220 are set so that the separator 40 and the positive electrode 22 have the same speed, and the separator 40 and the positive electrode 22 overlap each other at an appropriate preset position.
- the conveyance speed is controlled by the control device 500.
- the pair of welders 410 and 420 move in the conveying direction X while approaching each other, and nip only the leading ends of both edge portions of the heel separator 4 0. Then, while the movement of the heel separator 40 and the positive electrode 22 in the conveying direction X is maintained, the projection 411 and the heel 421 are used for welding (see T5 in FIG. 19). Since the separator 40 reaches the non-adsorption region A3 of the lamination drums 310 and 320 after passing through the gap, the separator 40 is separated from the outer peripheral surface 311 of the lamination drums 310 and 320 without receiving the adsorption force, and the positive electrode 22 is interposed therebetween. The paper is sequentially carried out in the carrying direction X while being sandwiched.
- separator 40 does not leave
- the positive electrode 22 is transported in the transport direction X in a substantially horizontal state by the introduction support portion 250 in synchronization with the stacking drums 310 and 320, and the separator 40 adsorbed and held on the outer peripheral surface 311 of the stacking drums 310 and 320 is stacked.
- the drums 310 and 320 are sequentially laminated on both surfaces of the positive electrode 22 as the drums 320 and 320 are rotated.
- the suction force of the sliding area A1 is increased again, and the supply of the separator material S by the feed roller unit 360 is started (see T6 in FIG. 19).
- the pair of welding machines 410 and 420 are separated and moved upstream in the transport direction, and then again as shown in FIG. While moving in the transport direction X, the other joints 42 are welded together.
- the welding machines 410 and 420 are separated from each other, and the produced packaged positive electrode 20 is opened (FIG. 19). (See T7).
- the joining portion 42 on the side 44B of the separator 40 is also joined by another welding machine (not shown) to form the packaged positive electrode 20.
- the packaged positive electrode 20 can be produced continuously by repeating the above steps.
- the produced packaged positive electrode 20 is transported to the next step, and alternately stacked with the negative electrode 30 to form the battery element 15, and the secondary battery 10 is finally manufactured.
- the separator 40 and the positive electrode 22 overlap at a predetermined appropriate position in the transport of the separator 40 by the rotary transport unit 300 ⁇ (separator transport unit) and the transport of the positive electrode 22 by the electrode transport unit 200, and at the same speed.
- the separator 40 and the positive electrode 22 are moved together by synchronizing the transport positions and transport speeds of the rotary transport unit 300 and the electrode transport unit 200 by the control device 500 (synchronizing means).
- the separator 40 can be smoothly transferred to the positive electrode 22 and the generation of wrinkles in the separator 40 and the positive electrode 22 during stacking can be suppressed. Therefore, in the case of a large battery for a car, for example, it is particularly effective in preventing the generation of wrinkles by using a method of stacking sequentially from the front end side flaw (conveying direction X side).
- the rotary transport unit 300 includes a stacking drum 310 and a stacking drum 320 that transport while holding different separators 40, and the electrode transport unit 200 is transported by each of the stacking drums 310 and 320. Since the positive electrode 22 is conveyed so that the positive electrode 22 overlaps between the two, the two separators 40 can be simultaneously laminated on both surfaces of the positive electrode 22, and the packaged positive electrode 20 can be manufactured at high speed.
- the adsorbing area A2 formed on the outer peripheral surface 311 of the stack drum 310 and the rod 320 ⁇ ⁇ (columnar rotating body) that conveys the separator 40 by rotating attracts the separator 40 that adsorbs and conveys the separator 40. Since it maintains until it contacts the positive electrode 22 conveyed by the conveyance part 200, even if it speeds up lamination
- the adsorption region A2 releases the adsorption to the separator 40 that is adsorbed and conveyed after the separator 40 comes into contact with the positive electrode 22 conveyed by the electrode conveyance unit 200, an excessive force is applied to the separator 40 during stacking.
- the separator 40 and the positive electrode 22 can be smoothly laminated while suppressing the occurrence of wrinkles in the separator 40 without acting.
- FIG. 20 shows a modification of the laminating apparatus according to this embodiment.
- a pressurizing chamber 334 having a pressure higher than the atmospheric pressure is provided inside the laminating drums 310 and 320.
- the gas (fluid) can be blown out from the vent hole 312.
- FIG. 21 shows another modification of the laminating apparatus according to the present embodiment, but instead of a cylindrical laminating drum, a suction belt 380 that can be flexibly bent and has a ventilation hole 382 is held by a plurality of rotating rollers 383. Configured. With such a configuration, the cross section of the heel is not limited to a circle, and the outer peripheral surface 381 can be formed in an arbitrary shape, and the degree of freedom in design is improved. In particular, by setting the region B where the separator 40 and the positive electrode 22 between the pair of suction belts 380 are stacked widely, the separator 40 and the positive electrode 22 can be held by the suction belt 380 until the welding by the welding machine is completed. The accuracy of welding can be improved. In FIGS. 20 and 21, the same reference numerals are used for portions having the same functions as those of the present embodiment, and the description thereof is omitted.
- the form in which the positive electrode 22 is packed in the separator 40 as the packaged positive electrode 20 has been described.
- the negative electrode 30 may be packaged in the stacking apparatus.
- the positive electrode lead 11 and the negative electrode lead 12 are led out from the same end portion of the exterior member 13 as shown in FIG. 1 .
- the positive electrode lead 11 and the negative electrode lead 12 may be led out from opposite ends, for example.
- the negative electrode 30 and the packaged positive electrode 20 are laminated so that the positive electrode tab 23 and the negative electrode tab 33 are opposite to each other.
- the predetermined gap 340 is provided between the pair of upper and lower stacked drums 310 and 320 of the rotary conveyance unit 300, but the stacked drum 310 and the hook 320 may be in contact with each other and there may be no gap.
- the positive electrode 22 is conveyed in the substantially horizontal state in the electrode conveyance part 200, you may convey in the other direction.
- pair of laminated drums 310 and 320 may be arranged in other directions instead of being arranged up and down.
- one continuous separator 40 is cut out into a predetermined shape while being sucked and held on the outer peripheral surface 311 of the stacking drums 310 and 320 by the separator cutter 351.
- the stacking is cut into a predetermined shape in advance.
- the drums 310 and tubs 320 may be supplied to the stacked drums 310 and tubs 320 and conveyed while adsorbed.
- a pair of symmetrically laminated drums 310 and 320 are provided, but the shape of the paired laminated drums (separator transport unit) may be asymmetrical. It is good also as a drum and making the other into a suction belt of arbitrary shapes.
- the lamination drum 310 and the rod 320 have adsorption power, even in the configuration in which one separator 40 is laminated on one surface of the positive electrode 22 (or the negative electrode 30), even one lamination drum functions sufficiently. Demonstrate.
- the introduction support part 250 is made up of rollers, but may be composed of other members such as a flat member.
- the cutting blade provided in the cutting part 350 may not be a thermal cutter, but may be a physically sharp cutting blade.
- the recessed part 313 is provided as a receiving part, the receiving part does not necessarily need to be the recessed part 313.
- the negative pressure is adjusted to adjust the slip and adsorption on the outer peripheral surface 311 of the separator material S, but the negative pressure in the first negative pressure chamber 331 is substantially reduced.
- the supply and restraint of the cocoon separator material S may be adjusted only by the restraining force of the feed roller unit 360 while maintaining the constant. In this case, it is preferable that the suction force of the sliding region A1 is lower than the suction force of the suction region A2.
- the method of giving the adsorbing force to the stacking drum 310 and the kite 320 is not limited to the method of adsorbing by negative pressure, but may be adsorbed by eg kite.
- the adsorption unit 370, the negative pressure supply device 333, and the welding unit 400 are synchronized by the control device 500 (synchronizing means), but not all of them need to be electrically synchronized. May be linked and synchronized.
- the separator and the electrode are transferred to the electrode from the downstream side in the conveying direction while moving the separator and the electrode so as to overlap each other at a predetermined position, and the separator is sequentially detached from the separator conveying unit to the electrode. Since lamination is performed, high-speed lamination is possible without stopping the separator and electrode, and the battery manufacturing time can be shortened.
- the separator and the electrode are moved so as to overlap each other at a predetermined position, the separator is transferred to the electrode from the downstream side in the conveying direction, and the vertical separator is sequentially detached from the separator conveying portion. Since it is laminated
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Abstract
Description
まず、図1を参照して、積層装置により形成されるリチウムイオン二次電池(積層型電池)について説明する。図1はリチウムイオン二次電池の外観を表した斜視図、図2はリチウムイオン二次電池の分解斜視図、図3は負極および袋詰正極の平面図である。
次に本発明の一実施形態に係る積層装置について、 図面を参照しつつ説明する。
本発明の積層装置および積層方法によれば、 セパレータおよび電極を所定の位置で重なるように移動させつつ搬送方向の下流側からセパレータを電極へ受け渡し、 セパレータをセパレータ搬送部から順次離脱させて電極に積層するため、 セパレータおよび電極を停止させずに高速な積層が可能となり、電池の製造時間を短縮できる。
本国際特許出願は米国指定に関し、2011年4月7日に出願された日本国特許出願第2011-085733号について米国特許法第119条(a)に基づく優先権の利益を援用し、当該開示内容を引用する。
Claims (8)
- 所定形状のセパレータを保持した状態で搬送するセパレータ搬送部と、
所定形状の電極を搬送する電極搬送部とを有し、
前記セパレータおよび電極が所定の位置で重なるように前記電極およびセパレータをともに移動させて搬送方向の下流側から前記セパレータを前記電極に受け渡しつつ、当該セパレータを前記セパレータ搬送部から順次離脱させて前記電極に積層する積層装置。 - 前記セパレータ搬送部および前記電極搬送部の搬送位置および搬送速度を同期させる同期手段をさらに有し、
前記セパレータ搬送部は、 各々が異なるセパレータを保持した状態で搬送する第1セパレータ搬送部および第2セパレータ搬送部を有し、
前記電極搬送部は、 前記第1セパレータ搬送部および第2セパレータ搬送部の各々によって搬送される2枚のセパレータの間に前記電極が重なるように当該電極を搬送する、請求項1に記載の積層装置。 - 前記セパレータ搬送部は、 所定形状のセパレータを吸着可能な吸着領域を外周面に備えるとともに回転することで吸着した前記セパレータを搬送する円柱状回転体を有し、
前記吸着領域は、吸着して搬送する前記セパレータに対する吸着を、当該セパレータが前記電極搬送部によって搬送される前記電極と接するまで維持する、請求項1または2に記載の積層装置。 - 前記吸着領域は、吸着して搬送する前記セパレータに対する吸着を、当該セパレータが前記電極搬送部によって搬送される前記電極と接した後に解除する、請求項3に記載の積層装置。
- 所定形状のセパレータを保持した状態で搬送するセパレータ搬送部および所定形状の電極を搬送する電極搬送部により前記セパレータおよび電極が所定の位置で重なるように搬送することと、
前記電極およびセパレータをともに移動させて搬送方向の下流側から前記セパレータを前記電極に受け渡しつつ、当該セパレータを前記セパレータ搬送部から順次離脱させて前記電極に積層することとを含む積層方法。 - 前記セパレータ搬送部および前記電極搬送部の搬送位置および搬送速度を同期させて前記セパレータおよび電極を搬送することと、
前記セパレータ搬送部により2枚のセパレータをそれぞれ搬送しつつ、前記電極搬送部により前記2枚の前記セパレータの間に前記電極が重なるように当該電極を搬送することを含む、請求項5に記載の積層方法。 - 前記セパレータ搬送部の外周面に画成される吸着領域に所定形状のセパレータを吸着し、前記セパレータ搬送部の円柱状回転体により回転することで前記セパレータを搬送し、当該セパレータが前記電極搬送部によって搬送される前記電極と接するまで前記吸着領域による吸着を維持する、請求項5または6に記載の積層方法。
- 搬送される前記電極および前記吸着されたセパレータが接した後に、 前記吸着領域による吸着を解除する、請求項7に記載の積層方法。
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