WO2003005480A1 - Secondary battery, manufacturing method for secondary battery, and manufacturing apparatus for secondary battery - Google Patents
Secondary battery, manufacturing method for secondary battery, and manufacturing apparatus for secondary battery Download PDFInfo
- Publication number
- WO2003005480A1 WO2003005480A1 PCT/JP2002/006662 JP0206662W WO03005480A1 WO 2003005480 A1 WO2003005480 A1 WO 2003005480A1 JP 0206662 W JP0206662 W JP 0206662W WO 03005480 A1 WO03005480 A1 WO 03005480A1
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- WIPO (PCT)
- Prior art keywords
- electrode sheet
- negative electrode
- secondary battery
- positive electrode
- electrolysis
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
- H01M4/662—Alloys
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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
- H01M10/0409—Machines for assembling batteries for cells with wound 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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/74—Meshes or woven material; Expanded metal
- H01M4/742—Meshes or woven material; Expanded metal perforated material
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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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
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
- Y10T29/49115—Electric battery cell making including coating or impregnating
-
- 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 secondary battery, a secondary battery manufacturing method, and a secondary battery manufacturing apparatus.
- the present invention relates to a secondary battery, a secondary battery manufacturing method for manufacturing the battery, and a secondary battery manufacturing apparatus.
- the electrode of the lithium ion polymer battery of the secondary battery is first formed by a process as described in Japanese Patent Application Laid-Open No. 11-339795. Then, a solution-type electrolyte is injected into the current collector in a state where a plurality of the positive electrode and the negative electrode are stacked, and then the electrolyte is cured by a heat treatment in a drying furnace. ing.
- the above-mentioned electrode is a film-forming process in which a positive electrode material, a negative electrode material, and a separator are separately applied to a carrier material to separately form a wound roll-shaped positive electrode material film, a negative electrode material film, and a separator overnight film.
- a material film, a negative electrode material film, and a separator film to a predetermined width to form a roll-shaped positive electrode material film, a negative electrode material film, and a separator film individually; and a process in which a current collector is interposed.
- a positive electrode film and a negative electrode material film, each of which is cut into a roll, are laminated on both surfaces of the current collector and laminated to form a positive electrode film and a negative electrode film individually.
- an electrode is manufactured by 9 steps, and then, after a plurality of the electrodes are stacked, a solution-type electrolyte is injected into a current collector, and then the electrolyte is heated by a drying furnace. Since the specified lithium-ion polymer battery is manufactured by hardening the product, the number of manufacturing processes must be large, and equipment corresponding to each process must be installed.The entire manufacturing equipment is large, and each equipment is controlled. However, there is a problem that the process is complicated and the production efficiency is poor due to many steps.
- the present invention has the problem of preventing the occurrence of defective products, improving production efficiency, manufacturing cost and equipment cost. It is an object of the present invention to provide a secondary battery, a secondary battery manufacturing method, and a secondary battery manufacturing apparatus capable of reducing the size of a storage battery and a secondary battery. Disclosure of the invention
- the electrolytic solution and the insulating material-containing solution are continuously applied to both surfaces of the positive electrode sheet and the negative electrode sheet, respectively, to form the positive electrode sheet and the negative electrode sheet.
- the electrolysis and the insulating material-containing solution applied to the object were heated to fix the electrolysis and the insulating material, respectively, the electrolysis and the insulating material were fixed to the positive electrode sheet having the electrolysis and the insulating material fixed thereto. It is characterized by being formed by laminating a negative electrode sheet material and winding it into a predetermined shape.
- electrolysis and an insulating material containing solution are continuously apply
- the positive electrode or negative electrode sheet is formed from a positive electrode active material, a conductive material, and a binder in the case of the positive electrode sheet. In this case, it is composed of a negative electrode active material, a conductive material, and.
- the positive electrode active material is lithium oxide
- the negative electrode active material is a carbon material
- the conductive material is natural graphite or force pump rack or acetylene black
- the binder is polytetrafluoroethylene (PTFE) or polyvinyl fluoride. It is preferably a solution of lidene (PVDF) or hexafluoropropylene (HEP) or a copolymer solution thereof.
- the carbon material forming the negative electrode active material is more preferably coke-based carbon or graphite-based carbon.
- the current collector forming the positive or negative electrode sheet is more preferably a foil of stainless steel, nickel, copper, or the like, a punched metal, or an expanded metal.
- the method for producing a secondary battery of the present invention includes: a step of sending a positive electrode sheet; a first coating step of continuously applying a solution containing an electrolysis and an insulating substance to both surfaces of the positive electrode sheet; A first heating step of heating the electrolysis and the insulating substance-containing solution applied to both surfaces of the positive electrode sheet and fixing the insulating substance; a step of delivering the negative electrode sheet; A second coating step of continuously applying the solution containing the insulating substance to both sides of the negative electrode sheet; electrolysis applied to both sides of the negative electrode sheet; heating the insulating substance containing solution to perform electrolysis; A second heating step of fixing the insulating material; electrolysis; laminating the positive electrode sheet material to which the insulating material is fixed and the negative electrode sheet material to which the electrolysis and insulating material is fixed and winding into a predetermined shape And a winding step of Things.
- the method for manufacturing a secondary battery of the present invention since the secondary battery is manufactured by the above-described process, the occurrence of defective products can be prevented without generation of injection spots, bubbles, and the like of an electrolyte. Can be prevented. Also, the number of processing steps can be greatly reduced, and the production efficiency can be greatly improved.
- the step of attaching the current collecting tab to the positive electrode sheet and the step of attaching the current collecting tab to the negative electrode sheet are provided between the above-described steps.
- the tabs can be prevented from being damaged when handling the sheet and the negative electrode sheet.
- the positive electrode sheet or the negative electrode sheet it is preferable to store a necessary amount of the positive electrode sheet or the negative electrode sheet during the operation of forming the secondary battery.
- the positive electrode sheet-like material By storing the electrode sheet-like material, the positive electrode sheet-like material can be continuously conveyed in the process on the downstream side.
- the positive electrode or negative electrode The positive or negative electrode sheet-like material can be stored in a process that is on the upstream side of the winding process by the amount of the conveyed material.
- the winding step includes two cores rotatably attached to the evening let member rotatably supported and rotated by the device base.
- One of the shafts is in the winding position
- the other is A core shaft positioned at the take-out position and positioned at the winding position in that state sequentially winds a laminate of the positive electrode sheet material and the negative electrode electrode material into a predetermined shape, and the laminate is in a predetermined shape.
- the secondary battery manufacturing apparatus of the present invention includes: a positive electrode sheet feeding mechanism; a first coating mechanism for continuously applying a solution containing an electrolysis and an insulating substance to both surfaces of the positive electrode sheet; The first heating mechanism that heats the solution containing the insulating substance applied to both sides of the sheet-like material to fix the electrolysis and insulating substance, the mechanism for delivering the negative electrode sheet-like material, and the solution containing the electrolysis, the insulating substance, and the containing solution
- a second coating mechanism that continuously coats both sides of the negative electrode sheet, and the electrolysis and insulating substances applied to both sides of the negative electrode sheet are heated to fix the electrolysis and insulating substances.
- the secondary battery manufacturing apparatus of the present invention since the above-described mechanism is provided, it is possible to efficiently and reliably manufacture a product free from unevenness of injection of an electrolyte and generation of air bubbles during curing. Further, the entire manufacturing apparatus can be made compact by reducing the number of processing steps.
- a current collection tab mounting mechanism is installed between the two mechanisms.
- tabs can be formed at predetermined positions on the positive electrode sheet and the negative electrode sheet.
- an accumulator roller for storing a predetermined amount of the positive or negative electrode sheet is provided, and the accumulator roller is configured to be movable with respect to the apparatus base. By configuring the accumulator roller to be movable with respect to the apparatus base, a predetermined amount of the positive or negative electrode sheet can be stored.
- At least one of the first heating mechanism and the second heating mechanism is configured to heat the solution containing the electrolytic and insulating substances applied to the positive or negative electrode sheet.
- a heating chamber that is heated by hot air composed of heated gas a heating box body composed of two seal chambers separated from the heating chamber by respective partition plates, and a hot air supply that supplies hot air into the heating chamber Means, and two exhaust means for exhausting hot air from the respective seal chambers respectively.
- An inlet and an outlet are provided in the heating box main body in the direction of the entrance of the sheet-like material, and each partition plate is provided in the same direction.
- an opening is provided in the opening.
- the first heating mechanism or the second heating mechanism By configuring the first heating mechanism or the second heating mechanism in this way, when the two exhaust means operate, the outside air is sucked in from the entrance and exit of the heating box body, and the hot air in the heating chamber is sucked in from the opening of the partition plate. Is discharged. Therefore, it is possible to prevent the hot air in the heating chamber from flowing out of the entrance and exit of the heating box.
- the winding mechanism is provided on the device base.
- the stack is wound at a position where the laminated structure is sequentially wound into a predetermined shape and at least two positions where the secondary battery as the wound laminate is taken out.
- the winding shaft located at the take-out position is moved to the take-up position, and the operation of switching between take-up and take-out and the take-up operation can be performed continuously.
- the core axis can be installed at one place in the secondary battery manufacturing apparatus of the present invention.
- FIG. 1 is a schematic diagram showing one embodiment of a configuration of a lithium ion polymer battery manufacturing apparatus which is one of the secondary battery apparatuses of the present invention
- FIG. 2 is a schematic front view showing the configuration of the lithium ion polymer battery of the present invention
- FIG. 3 is a schematic side view of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a schematic diagram showing one embodiment of a configuration of a lithium ion polymer battery manufacturing apparatus, which is one of the secondary battery manufacturing apparatuses of the present invention.
- the lithium ion polymer battery manufacturing apparatus has a positive electrode sheet shape.
- 1st coating mechanism that continuously applies the material delivery mechanism 1 and the electrolytic and insulating solution containing solution 150 to both sides of the positive electrode sheet material 101 2, a first heating mechanism 3 for heating the applied electrolysis and insulating substance-containing solution 150 by hot air to evaporate the solvent, thereby fixing the electrolysis and insulating substance to the positive electrode sheet material 101, Negative electrode sheet delivery mechanism 4 and electrolysis of the same components as electrolysis and insulating material containing solution 150, and insulating material containing solution 160 continuously applied to both surfaces of negative electrode sheet 1 1 1 1
- the second coating mechanism 5 and the first heating mechanism 3 are heated in the same manner as in the first heating mechanism 3 by applying hot air to heat the solution containing the insulating material 160 to evaporate the solvent, and the insulating material is formed into a negative electrode sheet.
- a winding mechanism that winds in a predetermined shape (cross-sectional shape is rectangular, circular, etc.) in a state in which it is stacked with It is configured to have:
- the above-mentioned electrolytic and insulating material-containing solutions 150 and 160 are solutions in which an electrolytic material and an insulating material are contained in a solvent or the like, and the electrolytic and insulating materials 15 1 and 161 are insulated from the electrolytic material. Substance.
- the above-described positive electrode sheet-like object delivery mechanism 1 is provided with a first tab mounting mechanism 10
- the negative electrode sheet-like material delivery mechanism 4 is provided with a second tab mounting mechanism 11.
- the above-described positive electrode sheet sheet feeding mechanism 1 is a positive electrode sheet sheet member in which the positive electrodes are formed intermittently at predetermined intervals in the same position on both surfaces or in a positional relationship offset by a predetermined length.
- a first accumulator roller 18 for storing a predetermined amount of the positive electrode sheet material 101, a driving roller 20 and a nip roller 21 are provided, and the positive electrode sheet material 101 is moved at a predetermined speed.
- the supply means 15 of the positive electrode sheet material 101 is a single chuck shaft 23 (for example, a movable member such as a claw is pressed against the inner peripheral surface of the core by the supply of compressed air to support the core.
- An air-chuck mechanism is rotatably mounted on a frame installed in the machine frame 12 by bearings, and the chuck shaft 23 penetrates the raw roll 100 of the positive electrode sheet material 101. It is designed to be supported horizontally in a state where it is set.
- the chuck shaft 23 is rotated by a motor to feed the positive electrode sheet material 101 at a predetermined speed.
- the supply means 15 is configured such that at least one of the core chucks of the core chuck moves in the longitudinal direction of the axis and the core chuck is rotatably attached to the frame. It is possible to use a chuck which is supported horizontally from both sides by a chuck.
- the first accumulation roller 18 is a rotating arm whose roller is rotatably mounted on the machine frame 12 by a bearing or a slider that can move in a substantially vertical direction along a guide provided on the machine frame 12.
- the first feed means 19 is rotated by a motor which is a driving means, and is driven by a bearing roller 20 attached to a common machine frame 12 or a single frame by a bearing, and to a machine frame 12 or a single frame.
- a support (not shown) mounted so as to move along the formed guide, and a driving roller 2 which is rotatably mounted on the support and is pressed by pressing means such as a cylinder, a spring, and a screw shaft. It is composed of a nipper roller 21 pressed with a predetermined force against zero.
- the first coating mechanism 2 is composed of slit dies 24, 25 so that the discharge ports 24a, 25a face each other across the positive electrode sheet material 101, which is conveyed in the vertical direction. Installed tanks for storing electrolysis and insulating material-containing solution 150 respectively. Pump for liquid feed, filter for removing impurities, electromagnetic valve for switching pipeline, pipe for circulation, for liquid feed Coating liquid supply means 26 and 27 having pipes and the like are connected.
- the first heating mechanism 3 heats the electrolytic and insulating material-containing solution 150 applied by the hot air while the positive electrode sheet-like material 101 travels vertically downward from above, and heats the positive electrode sheet.
- the heating chamber 31 fixed to both sides of the sheet-like material 101, and the heating chamber 31 separated from the heating chamber 31 by the partition plates 29, 30 so that hot air is introduced at the entrance 28a of the positive electrode sheet-like material 101.
- Hot air supply means 34 consisting of a heater and a duct supplying heated gas into the heating chamber 31, a duct connecting the exhaust fan (not shown) and the sealing chambers 32, 33.
- exhaust means 35, 36 comprising:
- a nozzle for blowing hot air toward both surfaces of the positive electrode sheet material 101 can be appropriately installed.
- the negative electrode sheet feeding mechanism 4 is similar to the positive electrode sheet feeding mechanism 1 described above, and the negative electrode is formed intermittently at the same position on both surfaces with a predetermined interval.
- 8th guide for guiding the negative electrode sheet material 1 11 drawn from the negative electrode sheet material 1 11 drawn from the raw material roll 1 110 Roller 39, a third accumulator roller 40 for storing a predetermined amount of the negative electrode sheet material 111, and a negative electrode sheet material 111 facing the second coating mechanism 5 at a predetermined speed. It comprises a second feeding means 41 for feeding, and a positioning roller 42 for moving the negative electrode sheet-like material 11 1 at a coating position in the second coating mechanism 5.
- the supply means 37 for the negative electrode sheet material 111 comprises a roll 110, in which the chuck shaft 43 is rotatably mounted on the frame by bearings and supported in a horizontal state. By rotating it, the negative electrode sheet 1 1 1 is sent out at a predetermined speed.
- the supply means 15 of the above-described positive electrode sheet sheet delivery mechanism 1 and the supply means 37 of the negative electrode sheet sheet delivery mechanism 4 are of a multi-axis switching type, and an automatic splicing mechanism is installed to provide a positive electrode.
- the sheet-like material 101 and the negative electrode sheet-like material 111 may be sequentially connected and sent.
- first guide roller 16, second guide roller 17, and positioning roller 22 are rotatably mounted on a common machine frame 12 or a single frame by bearings (not shown).
- the third accumulator roller 40 stops sending the negative electrode sheet material 1 1 1 from the supply means 37 when the second evening mounting mechanism 11 is operated. In this case, a sufficient amount of the negative electrode sheet material 111 is stored so that the negative electrode sheet material 111 located downstream from the second tab mounting mechanism 111 can be continuously transported. It is supposed to.
- the second feeding means 41 has the same configuration as the first feeding means 19, and sends out the negative electrode sheet material 111 toward the second coating mechanism 5.
- the second coating mechanism 5 is connected to a pair of slit die rollers 44, 45 and the respective slit die rollers 44, 45, and the electrolytic and insulating substance-containing solution 1
- the coating liquid supply means 46, 47 for intermittently supplying 60 to the respective slit die coaters 44, 45.
- the second heating mechanism 6 removes the electrolytic and insulating material-containing solution 160 applied while the negative electrode sheet material 111 travels vertically downward from above. Heating by hot air to evaporate the solvent, electrolysis, and heating chamber 5 1 for fixing insulating material 16 1 on both sides of negative electrode sheet material 1 1 1 and partition plates 49, 50 and heating chamber 5
- Heating box body 48 which is separated from 1 and has sealed chambers 52, 53 formed to prevent hot air from flowing out of inlet 48a and outlet 48b, and fan and heating for air blowing
- Hot air supply means 54 consisting of a heater that keeps gas such as air and gas at a predetermined temperature, and a duct that supplies heated gas into the heating chamber, an exhaust fan (not shown) and a seal It is configured to include exhaust means 55, 56 comprising ducts connecting chambers 52, 53.
- the applied electrolysis and the insulating substance-containing solution 150 and 160 are shortened.
- the heating can be performed uniformly over time.
- the winding mechanism 9 is composed of the positive electrode sheet material 102 with the electrolytic and insulating material 15 1 fixed thereon and the negative electrode sheet material 1 1 2 with the electrolytic and insulating material 16 1 fixed thereon as the positive electrode portion.
- winding means 64 for turning.
- the nip means 63 is rotatably supported on the machine frame 12 by bearings (not shown) and is rotated at a predetermined speed by a motor (not shown) which is a driving means.
- a motor (not shown) which is a driving means.
- Pressing means such as a nip roller 66 and a fluid cylinder, a spring, and a screw shaft for moving the movable member so that the nip roller 66 is pressed against the driving roller 65 with a predetermined force. (Not shown)).
- the winding means 64 is rotatably supported by the machine frame, and is rotatably driven by the motor.
- the evening let member 67, and the core shaft 68 rotatably attached to the evening let member 67 are provided. (68-1, 68-2) and a motor (not shown) for rotating the winding shaft 68 a predetermined number of times at a predetermined speed.
- the core shaft 68 (68-1, 68-2) is formed by sequentially laminating the continuously transported positive electrode sheet material 102 and negative electrode sheet material 112 in a predetermined shape ( It is preferable to install it at at least two positions: a position where the cross-sectional shape is rectangular, square, circular, etc., and a position where the wound product (battery) is taken out. However, when the production volume is small, the core shaft is used. 6 8 can be one place.
- cutting means for cutting the positive electrode sheet material 102 and the negative electrode sheet material 112 into predetermined lengths required for winding (FIG. (Not shown) is installed, and an adhesive tape 190 for fixing the end of the wound laminate to the outer peripheral surface of the roll is attached near the product take-out position. (Not shown) for fixing adhesive tape for fixing.
- a third guide roller 6 9 for horizontally moving the positive electrode sheet material 102 sent from the first heating mechanism 3 is provided.
- a winding mechanism for winding the fifth guide roller 71, the sixth guide roller 72 for moving the positive electrode sheet material 102 downward in the vertical direction, and the positive electrode sheet material 102 A seventh guide port 73 for driving the nip means 63 toward the nip means 63 is provided, and a fourth guide roller 70 is provided between the fourth guide roller 70 and the fifth guide roller 71.
- the second accumulator roller 74 has the same configuration as the first accumulator roller 18, and the roller moves in a substantially vertical direction so that the evening set member 6 7 of the winding means 6 4 of the winding mechanism 9 is provided. Is rotated and the core shaft 68-1 is moved from the winding position to the take-out position, and the core shaft 68-8-2 is moved from the take-out position to the winding position and wound by the core shaft 68-8-2. Until the process is started, the positive electrode sheet material 102 sent out from the first heating mechanism 3 is stored.
- a first guide roller 75 for horizontally moving the negative electrode sheet material 112 sent out from the second heating mechanism 6 is provided.
- 8 and a first guide roller 7 9 for moving the negative electrode sheet 1 1 2 toward the nip means 6 3 of the winding mechanism 9 and a first guide roller 7 are provided.
- a fourth accumulator roller 80 is provided between the 6th and the 12th guide roller 77.
- the fourth accumulator roller 80 has the same configuration as the second accumulator roller 74, and the roller moves in a substantially vertical direction so that the evening let member 6 7 of the winding means 6 4 in the winding mechanism 9. Is rotated to move the core shaft 68 from the winding position to the take-out position, and move the core shaft 68 from the take-out position to the winding position. Until the winding is started, the negative electrode sheet material 112 sent from the second heating mechanism 6 is stored.
- the first accumulator roller 18, the second accumulator roller 74, the third accumulator roller 40, and the fourth accumulator roller 80 can be configured so that the rollers move in the horizontal direction.
- the above-described first tab mounting mechanism 10 includes a tab supply reel supporting means for rotatably supporting a reel on which the sheet-like material of the current collecting positive electrode tab 170 is wound, and a positive electrode tab 170.
- the second tab mounting mechanism 11 has the same configuration as the first tab mounting mechanism 10, and rotatably supports the reel on which the sheet-like material of the negative electrode tab 180 for current collection is wound.
- Tab supply reel support means means for attaching or winding a protective adhesive tape to the negative electrode tab 180, means for cutting the negative electrode tab 180 to a predetermined length, and means for cutting the negative electrode tab 180 to the negative electrode sheet
- Ultrasonic welding means for fusing at a predetermined position where the negative electrode of the object 11 is not formed, and between the eighth guide roller 38 and the ninth guide roller 39. is set up.
- the negative electrode tab When using the negative electrode sheet 111, in which the negative electrode is continuously formed, the negative electrode tab is peeled off at the place where the negative electrode tab 180 is to be attached, and then the negative electrode tab is removed. 180 is fused to a sheet.
- Rollers such as the guide rollers and accumulator rollers described above are rotatably mounted on the machine frame 12 with the rollers being cantilevered by bearings. It is configured to be rotated by the movement of the object.
- first guide roller 16, the eighth guide roller 38, the sixth guide roller 72, and the third guide roller 78 have tension detecting means, meandering amount detecting means, electrolysis, and the application position of the insulating material. At least one of the detection means is provided.
- the transport speed, the coating interval by the first coating mechanism 2 and the transport speed of the negative electrode sheet material 11 by the second feeding means 41, the coating interval by the second coating mechanism 5, and the meandering correction are controlled. It has become.
- the above-described positive electrode sheet feeding mechanism 1 and negative electrode sheet feeding mechanism 4 control the feeding speed, control the timing of switching between sending and stopping, and control the nip means 63 and winding means 64 in the winding mechanism 9.
- Rotational speed control and switching timing control with winding means 64, coating amount control of first coating mechanism 2 and second coating mechanism 5, etc. are set value input function, storage function, comparison calculation function, operation command output function
- the control is performed by a control device (not shown) provided with the above.
- a positive electrode sheet-like material feeding mechanism 1 a positive electrode sheet-like material feeding mechanism 1, a first coating mechanism 2, a first heating mechanism 3, and a first tab mounting mechanism 10 are disposed on one side of the winding mechanism 9 therebetween.
- the negative electrode sheet sheet feeding mechanism 4, the second coating mechanism 5, the second heating mechanism 6, and the second tab mounting mechanism 11 are provided, but the installation position of each mechanism is not limited. Needless to say.
- the raw fabric roll 100 on which the positive electrode sheet material 101 is wound in advance and the negative electrode sheet material 111 are wound.
- the coating liquid supply means 26 and 27 of the first coating mechanism 2 electrolyze and store the insulating substance-containing solution 150
- the coating liquid supply means 46 and 47 of the second coating mechanism 5 electrolyze.
- the insulating substance-containing solution 160 is stored.
- the electrolysis and insulating material-containing solutions 150 and 160 only need to contain the electrolytic material and the insulating material in a solvent or the like, and are limited in the types and contents of the electrolytic material and the insulating material, the types of the solution, and the like. Needless to say, it will not be done.
- a gel-like substance of an electrolytic substance and an insulating substance can be used instead of the electrolysis and the insulating substance-containing solutions 150 and 160, and may be applied in a liquid state by heating.
- the raw material roll 100 and the raw material roll 110 are located at the same position on both sides of the current collector or in a positional relationship offset by a predetermined length, the active material of the positive electrode and the negative electrode, the conductive material, the binder, and the dispersing material. And the like are intermittently applied by a slit die, and then passed through a heating mechanism to dry the slurry and fix it to the current collector to form the positive electrode sheet 101 and the negative electrode sheet. It can be obtained by forming a state-of-the-art material 11, cutting it into a predetermined width by slitting, and winding it into a roll.
- the current collector for forming the above-mentioned positive electrode sheet is preferably a foil of stainless steel, nickel, copper, or the like, or a punched metal or an expanded metal, and a surface-treated material can be used.
- the positive electrode active material is a lithium transition metal oxide manganate lithium (L i M n 2 ⁇ 4), lithium cobalt oxide (L i C O_ ⁇ 2), lithium nickelate (L i N i 0 2) are preferred.
- the negative electrode active material forming the negative electrode sheet material a carbon material having lithium ion storage capacity is preferable, and coke-based carbon and graphite-based carbon are more preferable.
- the conductive material is a known material having electronic conductivity, and is preferably natural graphite, force pump rack, acetylene black, or the like.
- a solution of polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), hexafluoropropylene (HFP), or a copolymer solution thereof is preferable.
- An organic solvent that can dissolve the binder is suitable as the dispersing agent.
- Acetone, methyl ethyl ketone (MEK), tetrahydrofuran (THF), dimethylformamide, dimethylacetaamide, tetramethylurea, phosphoric acid Trimethyl, N-methylpyrrolidone (NMP) and the like are preferred.
- Electrolyte an insulating material containing solution 1 5 0, 1 6 0 electrolytes of forming a lithium perchlorate (L i C l ⁇ 3), lithium hexafluorophosphate (L i PF 6), e ⁇ tetrafluoride lithium (L i BF 4), lithium hexafluoroarsenate (L i a s F 6) , collected by Riffle O b lithium methanesulfonate (L i CF 3 S_ ⁇ 3) or the like using, dissolved in a solvent (organic solvent) Let it.
- a solvent organic solvent
- polyethylene glycol polyethylene glycol, ethylene carbonate, dimethyl sulfoxide, butyl kraton, sulfone 1,2 dimethyl ketone, tetrahydrofuran, getyl carbonate, methyl carbonate, dimethyl carbonate, etc. are preferable.
- solvent polyethylene glycol, ethylene carbonate, dimethyl sulfoxide, butyl kraton, sulfone 1,2 dimethyl ketone, tetrahydrofuran, getyl carbonate, methyl carbonate, dimethyl carbonate, etc. are preferable.
- Use a mixture of seeds Use a mixture of seeds.
- binder polyvinylidene fluoride (PVDF) described above has insulating properties, it is used as an insulating material.
- N-methylpiperidone is used as a dispersing material.
- the insulating material and the dispersing material are dissolved in a solvent together with the above-mentioned electrolytic material.
- the raw material roll 100 on which the positive electrode sheet material 101 described above is wound and the raw roll 110 on which the negative electrode sheet material 111 is wound are ready,
- the raw material roll 100 is supported on the chuck shaft 23 of the supply means 15 of the positive electrode electrode sheet material feeding mechanism 1 and the raw material roll 110 is supplied with the negative electrode electrode sheet material feeding mechanism 4 3 7 On the chuck shaft 43.
- the first tab mounting mechanism 10 supports the positive tab 170 reel
- the second tab mounting mechanism 11 supports the negative tab 180 reel, and the positive tab 170 and the negative tab. 180 is brought into a state in which it can be fused to the positive electrode sheet material 101 and the negative electrode sheet material 111.
- the unprocessed sheet portion is pulled out from the material roll 110, and the eighth guide roller 38, the ninth guide roller 39, the third accumulator roller 40, the second feeding means 41, and the positioning are performed. And then passed through the slit dies 44 and 45 of the second coating mechanism 5 and through the inside of the heating box body 48 of the second heating mechanism 6, the 10th guide roller 75 and the 1st guide roller 76, 4th vacuum roller 80, 12th guide roller 77, 13th guide roller 7 8. Wrap around the 14th guide roller 79, and hold it by the nip means 63 of the winding mechanism 9. .
- the first accumulator roller 18, the second accumulator roller 74, the third accumulator roller 40, and the fourth accumulator roller 80 are respectively provided.
- the required amount of sheet material during the forming operation of the lithium ion polymer battery is stored.
- the winding means 64 of the winding mechanism 9 Wound around the core shaft 6 at the winding position, supply means 15 for the positive electrode sheet delivery mechanism 1, supply means 37 for the negative electrode sheet delivery mechanism 4 7 and nip means 6 for the winding mechanism 9 Activate 3 and winding means 6 4 to wind up.
- the supply means 15 is activated to operate the positive electrode sheet material 101. Almost simultaneously with the stop of the delivery, the first tab mounting mechanism 10 is operated, and the positive electrode tab 170 is fused to a predetermined position of the positive electrode sheet material 101.
- the negative electrode sheet-like material 11 is transported to the second tab mounting mechanism 11 and when it comes to the preset negative electrode tab mounting position, the supply means 37 is activated to operate the negative electrode sheet-like material. Almost at the same time when the delivery of 111 is stopped, the second tab mounting mechanism 11 is operated, and the negative electrode tab 180 is fused to a predetermined position of the negative electrode sheet material 111.
- the first The coating liquid supply means 26, 27 of the coating mechanism 2 is operated to switch the pipeline, and the solution 150 containing the electrolytic and insulating material is discharged from the slit dies 24, 25 and the positive electrode is discharged.
- the positive electrode portions formed on both sides of the electrode sheet 101 and the current collector portion where the positive electrode is not formed are continuously applied, and the application liquid supply means 46 of the second coating mechanism 5 is provided.
- the pipeline is switched by the operation of 47, and the solution 160 containing the electrolytic and insulating substances is discharged from the slit dies 44 and 45, and the negative electrode
- the electrolysis and insulating substance-containing solution 150 rises to a predetermined temperature. Heated by the heated hot air, the solvent evaporates, and the electrolysis and the insulating material 151 adhere to both surfaces of the positive electrode sheet-like material 101.
- the positive electrode sheet material 102 and the negative electrode sheet material 112 are wrapped by the wrapping means 63 in a state where the positive electrode part and the negative electrode part are sandwiched in the nip means 63. It is sent to the core shaft 68-1 of 4 and wound (gripped) around the core shaft 68-1.
- the evening let member 67 rotates to rotate the core shaft 68-1.
- the core shaft 68-2 moves to the winding position as well as the take-out position.
- the laminate of the positive electrode sheet material 102 and the negative electrode sheet material 112 is placed on the core shaft 68-2. It is wound.
- the cutting means (not shown) is operated to cut and fix the positive electrode sheet 102 and the negative electrode sheet 112 at the same time.
- the adhesive tape sticking means (not shown) is activated.
- the fixing adhesive tape 190 is attached to the outer peripheral surface of the laminate wound around the core shaft 68-1 and the cut end portion 300a, the core shaft 68-1 2 and 3, the lithium ion polymer battery 300 having the shape as shown in FIGS. 2 and 3 is taken out by an operator or a doffer mechanism.
- Adhesion or winding of the protective adhesive tapes 200 and 210 to the positive electrode tab 170 and the negative electrode plate 180 in the lithium ion polymer battery 300 is performed by the first tab mounting mechanism 10 and the second. 2 Tab mounting mechanism 11 Before or after fusion of positive electrode tab 170 and negative electrode tab 180 in part 1.
- the positive electrode sheet material 102 and the negative electrode sheet 112 are cut, the leading end is wound around 68-2, and the same operation as in the case of the core shaft 68-1 is performed.
- a lithium ion polymer battery 300 is formed.
- the secondary battery, the secondary battery manufacturing method, and the secondary battery manufacturing apparatus provide a power source for a portable telephone, a television camera, a notebook computer, and the like, which can be reduced in size, weight, capacity, and voltage. It is suitable for, for example, secondary batteries such as lithium ion polymer batteries and lithium batteries.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/480,097 US20040170899A1 (en) | 2001-07-04 | 2002-07-01 | Secondary battery, manufacturing method for secondary battery, and manufacturing apparatus for secondary battery |
EP02743773A EP1414098A4 (en) | 2001-07-04 | 2002-07-01 | ACCUMULATOR, METHOD FOR MANUFACTURING THE BATTERY, AND APPARATUS FOR MANUFACTURING THE BATTERY |
KR1020037017237A KR100867804B1 (ko) | 2001-07-04 | 2002-07-01 | 2차전지 제조방법 및 2차전지 제조장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-203285 | 2001-07-04 | ||
JP2001203285A JP2003017111A (ja) | 2001-07-04 | 2001-07-04 | 二次電池および二次電池製造方法ならびに二次電池製造装置 |
Publications (1)
Publication Number | Publication Date |
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WO2003005480A1 true WO2003005480A1 (en) | 2003-01-16 |
Family
ID=19039951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/006662 WO2003005480A1 (en) | 2001-07-04 | 2002-07-01 | Secondary battery, manufacturing method for secondary battery, and manufacturing apparatus for secondary battery |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040170899A1 (ja) |
EP (1) | EP1414098A4 (ja) |
JP (1) | JP2003017111A (ja) |
KR (1) | KR100867804B1 (ja) |
CN (1) | CN1293665C (ja) |
WO (1) | WO2003005480A1 (ja) |
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KR101106405B1 (ko) * | 2004-08-02 | 2012-01-17 | 삼성에스디아이 주식회사 | 권취형 전극 조립체의 제조 방법 및 이에 사용되는 장치 |
KR101201124B1 (ko) | 2005-04-25 | 2012-11-13 | 삼성에스디아이 주식회사 | 이차 전지의 전극 활물질 도포 방법 |
JP2008112638A (ja) * | 2006-10-30 | 2008-05-15 | Sanyo Electric Co Ltd | 電池の製造方法 |
CN101267049B (zh) * | 2007-03-13 | 2010-12-01 | 深圳市吉阳自动化科技有限公司 | 电池卷芯半自动卷绕机 |
CN101350426B (zh) * | 2007-07-16 | 2010-12-15 | 深圳市吉阳自动化科技有限公司 | 锂离子电池卷芯卷绕机 |
CN102598368B (zh) * | 2009-10-23 | 2014-09-17 | Sei株式会社 | 锂二次电池以及锂二次电池用集电箔的制造方法、以及锂二次电池用集电箔 |
KR101283336B1 (ko) * | 2010-05-04 | 2013-07-09 | 주식회사 엘지화학 | 액체 전해액을 포함하는 전해액 분리막 |
JP6030311B2 (ja) * | 2012-02-13 | 2016-11-24 | 日産自動車株式会社 | 帯状の電池素材の搬送装置および搬送方法 |
TWI474534B (zh) * | 2012-10-04 | 2015-02-21 | Metal Ind Res & Dev Ct | 電池模組 |
CN102969525B (zh) * | 2012-11-15 | 2014-10-22 | 珠海市讯达科技有限公司 | 电芯自动粘接系统 |
KR101637064B1 (ko) | 2013-07-04 | 2016-07-06 | 주식회사 엘지화학 | 전해액 주액방법 |
KR102165333B1 (ko) * | 2014-08-01 | 2020-10-13 | 삼성에스디아이 주식회사 | 극판 권취 장치 |
JP5709082B1 (ja) * | 2014-08-06 | 2015-04-30 | Ckd株式会社 | 積層装置及び積層体の製造方法 |
KR102177507B1 (ko) * | 2015-06-19 | 2020-11-11 | 삼성에스디아이 주식회사 | 극판 권취 시스템 |
JP6525943B2 (ja) * | 2016-11-08 | 2019-06-05 | Ckd株式会社 | 巻回装置 |
CN107799328B (zh) * | 2017-11-10 | 2024-03-15 | 深圳市诚捷智能装备股份有限公司 | 用于电容器电芯的切断机构 |
CN108217195B (zh) * | 2018-02-06 | 2023-09-19 | 深圳市诚捷智能装备股份有限公司 | 一种极片送料机构及电池制备装置 |
JP7217495B2 (ja) * | 2018-08-31 | 2023-02-03 | 株式会社皆藤製作所 | セパレータを用いない電極材の巻回装置 |
JP7358790B2 (ja) * | 2019-06-11 | 2023-10-11 | 凸版印刷株式会社 | 蓄電デバイス用電極 |
WO2023119184A1 (en) * | 2021-12-21 | 2023-06-29 | G.D S.P.A. | Apparatus and method for making a coil, preferably for an electrochemical cell intended for producing batteries |
IT202200008102A1 (it) * | 2022-04-22 | 2023-10-22 | Gd Spa | Apparato e metodo per la realizzazione di una bobina, preferibilmente per una cella elettrochimica destinata alla produzione di batterie |
KR102576790B1 (ko) | 2023-03-15 | 2023-09-11 | (주)제이에이치엠텍 | 2차 전지 제조 장치 |
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- 2001-07-04 JP JP2001203285A patent/JP2003017111A/ja active Pending
-
2002
- 2002-07-01 EP EP02743773A patent/EP1414098A4/en not_active Withdrawn
- 2002-07-01 KR KR1020037017237A patent/KR100867804B1/ko not_active IP Right Cessation
- 2002-07-01 US US10/480,097 patent/US20040170899A1/en not_active Abandoned
- 2002-07-01 CN CNB028135989A patent/CN1293665C/zh not_active Expired - Fee Related
- 2002-07-01 WO PCT/JP2002/006662 patent/WO2003005480A1/ja not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
---|---|
EP1414098A1 (en) | 2004-04-28 |
EP1414098A4 (en) | 2007-06-06 |
CN1524314A (zh) | 2004-08-25 |
KR20040008235A (ko) | 2004-01-28 |
US20040170899A1 (en) | 2004-09-02 |
KR100867804B1 (ko) | 2008-11-10 |
JP2003017111A (ja) | 2003-01-17 |
CN1293665C (zh) | 2007-01-03 |
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