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CN112786836A - Equipment and process for manufacturing cylindrical battery cell of water-based anode - Google Patents

Equipment and process for manufacturing cylindrical battery cell of water-based anode Download PDF

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Publication number
CN112786836A
CN112786836A CN202011632773.3A CN202011632773A CN112786836A CN 112786836 A CN112786836 A CN 112786836A CN 202011632773 A CN202011632773 A CN 202011632773A CN 112786836 A CN112786836 A CN 112786836A
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CN
China
Prior art keywords
winding
cutting
pole piece
pole
positive electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202011632773.3A
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Chinese (zh)
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CN112786836B (en
Inventor
杨宪宝
李锐辉
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Zhangzhou Huarui Lithium New Energy Technology Co ltd
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Zhangzhou Huarui Lithium New Energy Technology Co ltd
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Priority to CN202011632773.3A priority Critical patent/CN112786836B/en
Publication of CN112786836A publication Critical patent/CN112786836A/en
Application granted granted Critical
Publication of CN112786836B publication Critical patent/CN112786836B/en
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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
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/143—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
    • B26D1/15—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/27—Means for performing other operations combined with cutting
    • B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
    • 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
    • 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
    • H01M10/0422—Cells or battery with cylindrical casing
    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The invention provides a device for manufacturing a cylindrical battery cell of a water-based anode, which comprises a coating device, a slitting device and a winding device, wherein the coating device is arranged on the coating device; the slitting device comprises a slitting mechanism for slitting the pole pieces and a winding mechanism for winding the pole piece single bodies; the cutting mechanism comprises a plurality of cutting devices for cutting the pole pieces to form a plurality of negative pole single pieces or a plurality of positive pole single pieces; the cutting device comprises a first cutting part and a second cutting part for cutting the pole piece; the axis of the first cutting part and the axis of the second cutting part are obliquely arranged, and the cutting devices are arranged at equal intervals in the width direction of the pole piece. In the process of winding the anode single sheet or the cathode single sheet, the invention avoids the interference between the anode single sheet or the cathode single sheet and the cutting device, reduces the problems of sheet breakage, material falling and creasing, improves the yield and has greater economic benefit. The invention also provides a manufacturing process of the cylindrical battery cell of the water-based anode.

Description

Equipment and process for manufacturing cylindrical battery cell of water-based anode
Technical Field
The invention relates to the technical field of lithium battery production, in particular to equipment and a process for manufacturing a cylindrical battery cell of a water-based anode.
Background
The cylindrical battery is a battery with high capacity, long cycle life and wide use environment temperature. The product is applied to solar lamps, lawn lamps, backup energy sources, electric tools, toy models and photovoltaic energy sources.
At the in-process of making electric core, need earlier cut the pole piece after the coating, the cutter that cuts the pole piece among the prior art is the coating face setting of perpendicular to pole piece usually, like this after cutting, when the pole piece monomer of cutting takes place the displacement of upper and lower direction at the roll-up in-process, takes place the contact with the cutter easily and produces the friction, makes the roll-up process have short pause, is unfavorable for the rolling neat, may lead to the fragmentation, falls the material, pincher trees scheduling problem.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
An object of the embodiments of the present invention is to provide a device for manufacturing a cylindrical battery cell of a water-based positive electrode, so as to solve the problems mentioned in the background art that when a slit pole piece monomer is displaced in the vertical direction during winding, the slit pole piece monomer is likely to contact with a cutter to generate friction, so that the winding process is temporarily stopped, winding is not neat, and breaking, dropping and creasing may be caused.
The second purpose of the embodiment of the invention is to provide a manufacturing process of a cylindrical battery cell of a water-based positive electrode, which is to cut a positive electrode piece or a negative electrode piece through a cutting mechanism of a cutting device, and the cutting device of the cutting mechanism does not interfere with the movement of a negative electrode single piece or a positive electrode single piece in the vertical direction when a winding mechanism winds the negative electrode single piece or the positive electrode single piece, so that the problems of sheet breakage, material falling and wrinkling are avoided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cylindrical battery core manufacturing device of a water-based positive electrode comprises a coating device for coating foil to form a pole piece, a slitting device for slitting the pole piece to form a pole piece monomer, and a winding device for winding the pole piece monomer and a diaphragm to form a battery core; the slitting device comprises a slitting mechanism for slitting the pole pieces and a winding mechanism for winding the pole piece single bodies; the cutting mechanism comprises a plurality of cutting devices for cutting the pole pieces to form a plurality of negative pole single pieces or a plurality of positive pole single pieces; the cutting device comprises a first cutting part and a second cutting part for cutting the pole piece; the axis of the first cutting part and the axis of the second cutting part are obliquely arranged, and the cutting devices are arranged at equal intervals in the width direction of the pole piece.
Further, the first cutting portion includes a first circular saw blade; the second cutting portion includes a second circular saw blade.
Further, the inclination angle of the axis of the first disc saw blade is 45 degrees; the axis of the second circular saw blade is inclined at an angle of 135 deg.
Furthermore, the cutting device also comprises a first rotary driving device for driving the first circular saw blade to rotate, and a second rotary driving device for driving the second circular saw blade to rotate.
Further, the winding mechanism comprises a tensioning device for tensioning the single pole piece and a winding device for winding the single pole piece.
Further, the tensioning device comprises a first tensioning portion for tensioning the plurality of negative electrode single pieces or the plurality of positive electrode single pieces.
Further, the first tensioning part includes a first tensioning roller, a second tensioning roller, and a third tensioning roller; first tensioning roller and third tensioning roller and negative pole monolithic or anodal monolithic's lower surface roll connection, the second tensioning roller rolls with the upper surface roll connection of negative pole monolithic or anodal monolithic, the second tensioning roller is in between first tensioning roller and the third tensioning roller.
Further, the furling device comprises a first furling part and a second furling part.
Further, the first winding part includes a first guide roller and a plurality of first winding trays; the second winding part comprises a second guide roller and a plurality of second winding discs; the second guide roller is positioned below the first guide roller.
Further, the first winding part further comprises a third rotation driving device for driving the plurality of first winding disks to rotate; the second furling part also comprises a fourth rotation driving device which drives the plurality of second furling discs to rotate.
Furthermore, the slitting device also comprises a baking mechanism for baking the wound negative single pieces and positive single pieces.
Further, the roasting mechanism comprises a roasting part and a heating element; a first accommodating cavity for accommodating the first coiling plates and the second coiling plates is formed in the baking part, and the heating element is arranged in the baking part.
Further, the winding device comprises a first feeding mechanism for feeding the first diaphragm, a second feeding mechanism for feeding the negative single piece, a third feeding mechanism for feeding the second diaphragm, a fourth feeding mechanism for feeding the positive single piece, and a winding mechanism for winding the first diaphragm, the negative single piece, the second diaphragm and the positive single piece together to form the battery core.
Further, the winding mechanism comprises a first winding part for winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, an auxiliary part for assisting the winding of the first winding part, and a rubberizing part for pasting a terminal adhesive to the wound battery core.
Further, the first winding part comprises a first clamping part for clamping the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, and a first cutting part for cutting the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet; the first clamping part comprises a first clamping rod, a second clamping rod and a first opening and closing driving device for driving the first clamping rod and the second clamping rod to open and close.
Further, the first winding part further comprises a first moving driving device for driving the first clamping part to move, a first rotating driving device for driving the first clamping part to rotate, and a first telescopic driving device for driving the first clamping part to stretch; the output end of the first telescopic driving device is connected with the first clamping part, the output end of the first rotary driving device is connected with the first telescopic driving device, and the output end of the first movable driving device is connected with the first rotary driving device.
Further, the first cutting part comprises a first upper cutter, a first lower cutter and a second opening and closing driving device for driving the upper cutter and the lower cutter to open and close.
Further, the auxiliary portion includes an auxiliary winding member; the auxiliary winding piece comprises a first connecting plate, a second connecting plate and a third connecting plate which are sequentially and adjacently arranged; and a first limiting winding groove is formed on one side of the first connecting plate, a second limiting winding groove is formed on one side of the third connecting plate, and the distance between the first connecting plate and the third connecting plate is smaller than the width dimension of the negative pole single piece.
Further, the first limiting winding groove comprises a first extending section and a first arc-shaped winding section; the second limiting winding groove comprises a second extending section and a second arc-shaped winding section.
Further, the auxiliary part further comprises an auxiliary conveying belt for conveying the auxiliary winding member; the auxiliary winding part is fixedly connected to the auxiliary conveying belt.
Further, the adhesive applying part includes an adhesive supplying part supplying the termination tape roll, an adsorbing part adsorbing the termination tape roll, and a second cutting part cutting the termination tape roll.
Further, the adsorption part includes a vacuum adsorption head for adsorbing the termination tape roll; the lower surface of the vacuum adsorption head forms an arc adsorption surface matched with the outer circumferential surface of the battery core.
Further, the adsorption part also comprises a first lifting driving device for driving the vacuum adsorption head to lift.
Further, the adhesive supply portion includes an adhesive tape winding roller that winds up the termination adhesive tape roll, a fourth tension roller that tensions the termination adhesive tape roll, and an adhesive tape conveying roller that conveys the termination adhesive tape roll.
Further, the second cutting part comprises a second upper cutter, a second lower cutter and a third opening and closing driving device for driving the second upper cutter and the second lower cutter to open and close.
Further, the tape conveying roller has a first output end for outputting the terminated tape roll, and the second cutting portion is provided at one side of the first output end.
Further, the winding mechanism further comprises a second winding portion.
Further, the second winding part comprises a second clamping part for clamping the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet; the second clamping part comprises a third clamping rod, a fourth clamping rod and a fourth opening and closing driving device for driving the third clamping rod and the fourth clamping rod to open and close.
Further, the second winding part further comprises a second moving driving device for driving the second clamping part to move, a second rotating driving device for driving the second clamping part to rotate, and a second telescopic driving device for driving the second clamping part to stretch and retract; the output end of the second telescopic driving device is connected with the second clamping part, the output end of the second rotary driving device is connected with the second telescopic driving device, and the output end of the second mobile driving device is connected with the second rotary driving device.
Further, the first feeding mechanism includes a first guide portion that guides the first diaphragm, a first conveying portion that conveys the first diaphragm, and a glue applying portion that applies glue to an upper surface of the first diaphragm.
Further, the glue applying portion includes a plurality of sets of glue applying brushes arranged at equal intervals in a conveying direction of the first diaphragm, and a width dimension of the glue applying brushes is equal to a width dimension of the first diaphragm.
Further, the second feeding mechanism comprises a second guide part for guiding the negative single sheets, a second conveying part for conveying the negative single sheets, and a negative electrode welding part for welding the negative electrode lugs on the negative single sheets.
Further, the third feeding mechanism includes a third guide portion that guides the second diaphragm, and a third conveying portion that conveys the second diaphragm.
Further, the fourth feeding mechanism includes a fourth guide portion for guiding the positive electrode segment, a fourth conveying portion for conveying the positive electrode segment, and a positive electrode welding portion for welding the positive electrode tab to the positive electrode segment.
Further, coating unit is including the system of making of positive pole coating and negative pole coating mechanism, carries out the coating mechanism that coats to the foil, carries out the stoving mechanism of drying to the pole piece to and carry out the rolling mechanism that rolls to the pole piece.
Further, the system gum mechanism includes the first homogenate device that stirs positive pole coating, and the second homogenate device that stirs negative pole coating.
Further, the first homogenizing device comprises a first stirring cylinder and a first stirring device; the first stirring device comprises a first stirring shaft, a plurality of first stirring parts connected to the outer circumferential surface of the first stirring shaft, and a fifth rotation driving device for driving the first stirring shaft to rotate; a plurality of first stirring parts are arranged at equal intervals along the axial direction of the first stirring shaft, the first stirring device is arranged in the first stirring cylinder, the axis of the first stirring cylinder is overlapped with the axis of the first stirring shaft, and the output end of the fifth rotation driving device is connected with the first stirring shaft.
Further, the second homogenizing device comprises a second stirring cylinder and a second stirring device; the second stirring device comprises a second stirring shaft, a plurality of second stirring parts connected to the outer circumferential surface of the second stirring shaft, and a sixth rotation driving device for driving the second stirring shaft to rotate; the second stirring parts are arranged at equal intervals along the axial direction of the second stirring shaft, the second stirring device is arranged in the second stirring cylinder, the axis of the second stirring cylinder is overlapped with the axis of the second stirring shaft, and the output end of the sixth rotation driving device is connected with the second stirring shaft.
Further, the coating mechanism comprises a third homogenizing device for re-stirring the anode coating or the cathode coating, a storage device for containing the anode coating or the cathode coating, a foil conveying device for outputting the foil, and a spraying device for spraying the anode coating or the cathode coating on the upper surface of the foil.
Further, the third homogenizing device comprises a third stirring cylinder and a third stirring device; the third stirring device comprises a third stirring shaft, a plurality of third stirring parts connected to the outer circumferential surface of the third stirring shaft and a seventh rotation driving device for driving the third stirring shaft to rotate; the plurality of third stirring parts are arranged at equal intervals along the axial direction of a third stirring shaft, the third stirring device is arranged in a third stirring cylinder, the axis of the third stirring cylinder is overlapped with the axis of the third stirring shaft, and the output end of the seventh rotation driving device is connected with the third stirring shaft; the first mixing drum is communicated with the third mixing drum through a first material conveying pipe, and the second mixing drum is communicated with the third mixing drum through a second material conveying pipe.
Further, the storage device includes a storage portion; and a storage cavity for containing the anode coating or the cathode coating is formed in the storage part, and the storage part is communicated with the third mixing drum through a third conveying pipe.
Further, the foil conveying device comprises a bearing roller for bearing a foil roll, a second tensioning part for tensioning the foil, a foil conveying part for conveying the foil, a pole piece furling roller for furling the pole piece, and an eighth rotary driving device for driving the pole piece furling roller to rotate; and the output end of the eighth rotary driving device is connected with the pole piece furling roller.
Further, the spraying device includes a spraying portion that outputs the positive electrode paint or the negative electrode paint; the spraying part is communicated with the storage part through a fourth conveying pipeline.
Further, the spraying part comprises a spraying nozzle for spraying the positive coating or the negative coating on the upper surface of the foil.
Further, the drying mechanism comprises a drying part and a dryer for outputting hot air to the upper surface of the pole piece; the drying part is provided with an opening through which the pole piece passes.
Further, the rolling mechanism comprises a rolling part for rolling the pole pieces.
Further, the rolling part includes a first rolling roller and a second rolling roller; the axis level of first roller and second roller sets up and is mutually perpendicular with the direction of delivery of pole piece, first roller and second roller have the clearance that the pole piece passed between the roller, first roller and the upper surface roll connection of pole piece, the second roller and the lower surface roll connection of pole piece.
A manufacturing process of a cylindrical battery cell of a water-based anode comprises the following steps:
(1) coating positive coating or negative coating on the foil to form a positive pole piece and a negative pole piece;
(2) drying the positive pole piece and the negative pole piece;
(3) carrying out rolling treatment on the positive pole piece and the negative pole piece;
(4) slitting the rolled negative pole piece and positive pole piece to form a negative pole single piece and a positive pole single piece;
(5) baking the negative single piece and the positive single piece;
(6) and winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to form the battery core.
Further, before the step (1), a positive electrode coating material and a negative electrode coating material are prepared.
Further, the positive electrode coating and the negative electrode coating are prepared by a glue making mechanism.
Further, pouring a plurality of raw materials of the anode coating into the first stirring cylinder according to a preset proportion, driving the first stirring shaft to rotate through the fifth rotation driving device of the first stirring device, and driving a plurality of first stirring parts to stir and mix the plurality of raw materials in the first stirring cylinder; and pouring a plurality of raw materials of the negative coating into the second stirring cylinder according to a preset proportion, driving the second stirring shaft to rotate through a sixth rotation driving device of the second stirring device, and driving a plurality of second stirring parts to stir and mix the plurality of raw materials in the second stirring cylinder.
Further, in the step (1), a coating mechanism coats the foil with a positive coating or a negative coating to form a positive electrode sheet and a negative electrode sheet.
Further, when the anode coating needs to be coated on the foil, the anode coating in the first stirring cylinder is introduced into a third stirring cylinder, the anode coating is stirred by a third stirring device, the anode coating after stirring and mixing is prevented from standing and solidifying, the anode coating is input into a storage device, and after the foil is horizontally conveyed by a foil conveying device, the anode coating in the storage part is sprayed on the upper surface of the foil by a spraying device through a spraying nozzle; when the negative coating needs to be coated on the foil, the negative coating in the second stirring cylinder is guided into the third stirring cylinder, the negative coating is stirred by the third stirring device, the negative coating after stirring and mixing is prevented from standing and solidifying and is then input into the storage device, and after the foil is horizontally conveyed by the foil conveying device, the negative coating in the storage part is sprayed on the upper surface of the foil by the spraying device through the spraying nozzle.
Further, in the step (2), drying the anode coating or the cathode coating coated on the foil through a drying mechanism; and the positive pole piece or the negative pole piece passes through the opening of the drying part, the dryer outputs heat seal into the opening, and the positive pole piece or the negative pole piece is dried.
Further, in step (3), the coated positive pole piece and the coated negative pole piece are rolled by a rolling mechanism, and the positive pole piece or the negative pole piece passes through the first rolling roller and the second rolling roller, so that the connection between the coating and the foil is firmer and is not easy to fall off.
Further, in the step (4), the pole pieces are cut by a cutting mechanism of the cutting device, and the winding mechanism winds the cut negative pole single pieces or positive pole single pieces.
Further, the pole pieces are equally cut by the plurality of cutting devices, the pole pieces are cut by a first cutting part and a second cutting part of the cutting devices, the negative pole single pieces or the positive pole single pieces are wound by a winding device of the winding mechanism, the first winding disc and the second winding disc correspond to the negative pole single pieces or the positive pole single pieces, and the negative pole single pieces and the positive pole single pieces are wound.
Further, in the step (5), the negative electrode single pieces or the positive electrode single pieces on the first winding disc and the second winding disc are placed into a baking part for baking, and the negative electrode single pieces and the positive electrode single pieces are baked and dried.
Further, in the step (6), the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are respectively output through the first feeding mechanism, the second feeding mechanism, the third feeding mechanism and the fourth feeding mechanism, after the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are clamped and attached together through the first clamping part, the first moving driving device drives the first clamping part to move into the first limit winding groove and the second limit winding groove of the auxiliary winding piece, the first rotating driving device drives the first clamping part to rotate to wind the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, when the winding thickness is equal to the height of the first limit winding groove and the second limit winding groove, the winding is stopped, the first cutting part cuts off the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, and the first rotating driving device continues to rotate, the first clamping part is enabled to wind the rear part into a cylindrical shape, after the adhesive tape is output and terminated by the adhesive tape supply part, the vacuum adsorption head of the adsorption part adsorbs the terminated adhesive tape, the second cutting part cuts off the terminated adhesive tape roll after the vacuum adsorption head adsorbs the terminated adhesive tape, the first lifting driving device drives the vacuum adsorption head to move downwards to be matched with the first rotary driving device, the terminated adhesive tape roll is made to adhere to the tail ends of the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to form a battery cell, the first telescopic driving device drives the first clamping part to retract from the battery cell, the auxiliary conveying belt drives the auxiliary winding part and the battery cell to convey forwards, and the second clamping part performs secondary winding operation.
After the structure is adopted, the equipment for manufacturing the cylindrical battery cell of the water-based anode has at least the following beneficial effects:
after the pole pieces are coated by the coating device, the pole pieces are cut by a cutting mechanism of the cutting device, the pole pieces are equally cut by the plurality of cutting devices, the axes of the first cutting part and the second cutting part are obliquely arranged, so that the first disc saw blade and the second disc saw blade are provided with openings with widths larger than the widths of the positive pole single piece and the negative pole single piece, and the positive pole single piece and the negative pole single piece cannot interfere with the first disc saw blade and the second disc saw blade when moving upwards or downwards.
The invention also provides a manufacturing process of the cylindrical battery cell of the water-based anode, which cuts the anode pole piece or the cathode pole piece through the cutting mechanism of the cutting device, and the cutting device of the cutting mechanism can not interfere the movement of the cathode single piece or the anode single piece in the vertical direction when the winding mechanism winds the cathode single piece or the anode single piece, so that the problems of sheet breaking, material falling and creasing are avoided.
Drawings
Fig. 1 is a schematic perspective view of a cylindrical cell manufacturing apparatus and process for an aqueous positive electrode according to the present invention;
FIG. 2 is a schematic perspective view of the slitting device according to the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic perspective view of the winding device of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at B;
fig. 6 is a schematic perspective view of the coating apparatus of the present invention.
In the figure: 1-coating device, 2-slitting device, 3-winding device, 4-slitting device, 5-winding device, 41-slitting device, 411-first slitting section, 412-second slitting section, 51-tensioning device, 52-winding device, 511-first tensioning section, 5111-first tensioning roller, 5112-second tensioning roller, 5113-third tensioning roller, 521-first winding section, 522-second winding section, 5211-first guiding roller, 5212-first winding disk, 5221-second guiding roller, 5222-second winding disk, 21-baking device, 31-first feeding device, 32-second feeding device, 33-third feeding device, 34-fourth feeding device, 35-winding device, 36-first winding section, 37-auxiliary part, 38-rubberizing part, 361-first clamping part, 362-first cutting part, 3611-first clamping rod, 3612-second clamping rod, 363-first mobile driving device, 364-first rotary driving device, 365-first telescopic driving device, 371-auxiliary winding part, 3711-first connecting plate, 3712-second connecting plate, 3713-third connecting plate, 3714-first limit winding groove, 3715-second limit winding groove, 372-auxiliary conveying belt, 381-glue supply part, 382-adsorption part, 383-second cutting part, 3821-vacuum adsorption head, 3822-first lifting driving device, 3811-tape winding roller, 3812-fourth tensioning roller, 3813-tape conveying roller, 39-second winding part, 311-a first guide, 312-a first transport, 313-a sizing section, 321-a second guide, 322-a second transport, 323-a negative weld, 331-a third guide, 332-a third transport, 341-a fourth guide, 342-a fourth transport, 343-a positive weld, 11-a sizing mechanism, 12-a coating mechanism, 13-a drying mechanism, 14-a rolling mechanism, 15-a first homogenizing device, 16-a second homogenizing device, 151-a first stirring cylinder, 152-a first stirring device, 1521-a first stirring shaft, 1522-a first stirring section, 161-a second stirring cylinder, 162-a second stirring device, 1621-a second stirring shaft, 1622-a second stirring section, 121-a third homogenizing device, 122-storage device, 123-foil delivery device, 124-spraying device, 1211-third mixing drum, 1231-carrier roller, 1232-second tensioning unit, 1233-foil delivery unit, 1234-pole-sheet take-up roller, 1241-spraying unit, 1242-spraying nozzle, 131-drying unit, 132-dryer, 141-first laminating roller, 142-second laminating roller.
Detailed Description
In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.
As shown in fig. 1 to 6, the apparatus for manufacturing a cylindrical battery cell of a water-based positive electrode of the present invention includes a coating device 1 for coating a foil to form a pole piece, a slitting device 2 for slitting the pole piece to form a pole piece monomer, and a winding device 3 for winding the pole piece monomer and a diaphragm to form a battery cell; the slitting device 2 comprises a slitting mechanism 4 for slitting the pole pieces and a winding mechanism 5 for winding the pole piece single bodies; the slitting mechanism 4 comprises a plurality of slitting devices 41 for slitting the pole pieces to form a plurality of negative pole single pieces or a plurality of positive pole single pieces; the cutting device 41 comprises a first cutting part 411 and a second cutting part 412 for cutting the pole piece; the axis of the first cut portion 411 and the axis of the second cut portion 412 are arranged obliquely, and the plurality of cutting devices 41 are arranged at equal intervals in the width direction of the pole piece.
Thus, after the pole pieces are coated by the coating device 1, the pole pieces are cut by the cutting mechanism 4 of the cutting device 2, the pole pieces are equally cut by the plurality of cutting devices 41, the axes of the first cutting part 411 and the second cutting part 412 are obliquely arranged, so that the first disc saw blade and the second disc saw blade are provided with openings which are larger than the widths of the anode single piece and the cathode single piece, and the anode single piece and the cathode single piece cannot interfere with the first disc saw blade and the second disc saw blade when moving upwards or downwards. Specifically, the pole piece comprises a positive pole piece and a negative pole piece, and the pole piece monomer comprises a positive single piece and a negative single piece.
Preferably, in order to make the process of cutting the positive and negative electrode sheets smoother, the first cutting part 411 includes a first circular saw blade; the second cutting portion 412 includes a second circular saw blade.
Preferably, the axis of the first circular saw blade is inclined at an angle of 45 °; the axis of the second circular saw blade is inclined at an angle of 135 deg.. An opening through which the positive single piece or the negative single piece can conveniently pass downwards is formed between the first circular saw blade and the second circular saw blade of the same cutting device 41, and an opening through which the positive single piece or the negative single piece can conveniently pass upwards is formed between the first circular saw blade and the second circular saw blade of the adjacent cutting device 41, so that the positive single piece or the negative single piece cannot rub with the circular saw blades when moving upwards or downwards, and the integrity of the edge of the positive single piece or the negative single piece is ensured.
Preferably, in order to improve the cutting efficiency, the cutting device 41 further includes a first rotation driving device for driving the first circular saw blade to rotate, and a second rotation driving device for driving the second circular saw blade to rotate. In particular, the first and second rotary drives are both motor-driven.
Preferably, the winding mechanism 5 comprises a tensioning device 51 for tensioning the single pole piece and a winding device 52 for winding the single pole piece. The tensioning device 51 is used for tensioning the positive single piece or the negative single piece, so that the problem of wrinkling after the positive single piece or the negative single piece is wound up by the winding device 52 is avoided.
Preferably, in order to facilitate the winding of the negative electrode single piece or the positive electrode single piece, the tensioning device 51 includes a first tensioning portion 511 that tensions the plurality of negative electrode single pieces or the plurality of positive electrode single pieces.
Preferably, in order to facilitate winding up of the negative electrode single piece or the positive electrode single piece, the first tensioning portion 511 includes a first tensioning roller 5111, a second tensioning roller 5112, and a third tensioning roller 5113; the first tension roller 5111 and the third tension roller 5113 are in rolling connection with the lower surface of the single negative electrode sheet or the single positive electrode sheet, the second tension roller 5112 is in rolling connection with the upper surface of the single negative electrode sheet or the single positive electrode sheet, and the second tension roller 5112 is located between the first tension roller 5111 and the third tension roller 5113.
Preferably, the furling device 52 comprises a first furling part 521 and a second furling part 522. The positive single pieces or the negative single pieces are respectively collected through the first furling part 521 and the second furling part 522, so that the friction between the positive single pieces or the negative single pieces and the circular saw blade is avoided.
Preferably, in order to facilitate winding of each positive electrode piece or each negative electrode piece, the first winding part 521 includes a first guide roller 5211 and a plurality of first winding trays 5212; the second winding part 522 includes a second guide roller 5221 and a plurality of second winding disks; the second guide roller 5221 is positioned below the first guide roller 5211.
Preferably, in order to make the winding of the single positive electrode sheet or the single negative electrode sheet more stable, the first winding part 521 further includes a third rotation driving device for driving the plurality of first winding disks 5212 to rotate; the second take-up portion 522 further includes fourth rotation driving means for driving the plurality of second take-up disks 5222 to rotate. In particular, the third and fourth rotary drives are both motor-driven.
Preferably, the slitting device 2 further comprises a baking mechanism 21 for baking the wound cathode single piece and anode single piece in order to make the coating adhere to the foil better.
Preferably, the baking mechanism 21 includes a baking portion and a heating element; a first accommodating cavity for accommodating the plurality of first rolling discs 5212 and the second rolling discs 5222 is formed in the baking part, and the heating element is arranged in the baking part. The first accommodating cavity in the baking part is heated by the heating element, and the positive electrode single sheet or the negative electrode single sheet on the first rolling disc 5212 and the second rolling disc 5222 in the first accommodating cavity is baked, so that the coating is better attached to the foil.
Preferably, the winding device 3 includes a first supply mechanism 31 that supplies the first separator, a second supply mechanism 32 that supplies the negative electrode single sheet, a third supply mechanism 33 that supplies the second separator, a fourth supply mechanism 34 that supplies the positive electrode single sheet, and a winding mechanism 35 that winds the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet together to form the cell. The first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are respectively output through the first feeding mechanism 31, the second feeding mechanism 32, the third feeding mechanism 33 and the fourth feeding mechanism 34 and sequentially comprise the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet from top to bottom, and the winding mechanism 35 winds the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to form a battery cell.
Preferably, in order to improve the working efficiency, the winding mechanism 35 includes a first winding portion 36 for winding the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet, an auxiliary portion 37 for assisting the winding of the first winding portion 36, and a tape portion 38 for applying a stop tape to the wound cell.
Preferably, the first winding portion 36 includes a first clamping portion 361 for clamping the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet, and a first cutting portion 362 for cutting the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet; the first clamping unit 361 includes a first clamping rod 3611, a second clamping rod 3612, and a first opening/closing driving device for driving the first clamping rod 3611 and the second clamping rod 3612 to open/close. The first clamping part 361 is driven by the first opening and closing driving device to clamp the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first clamping part 361 moves to the auxiliary part 37 to perform winding operation, the first cutting part 362 cuts off each layer after outputting a certain length, and the first clamping part 361 continues to wind the rest part until each layer is completely wound into a cylindrical shape; specifically, the first opening and closing driving device includes a first cylinder and a second cylinder, an output end of the first cylinder is connected to the first clamping rod 3611, and an output end of the second cylinder is connected to the second clamping rod 3612.
Preferably, the first winding part 36 further includes a first movement driving device 363 for driving the first clamping part 361 to move, a first rotation driving device 364 for driving the first clamping part 361 to rotate, and a first extension driving device 365 for driving the first clamping part 361 to extend and retract; an output end of the first telescopic driving means 365 is connected to the first clamping portion 361, an output end of the first rotary driving means 364 is connected to the first telescopic driving means 365, and an output end of the first movement driving means 363 is connected to the first rotary driving means 364. After the first clamping part 361 clamps the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet, the first moving driving device 363 drives the first clamping part 361 to move to the auxiliary part 37, the first rotating driving device 364 drives the first clamping part 361 to rotate for winding, and the first telescopic driving device 365 enables the clamping part to extend out of the battery cell after winding; specifically, the first movement driving device 363 includes a rodless cylinder, the first rotation driving device 364 includes a rotation cylinder, and the first telescopic driving device 365 includes a telescopic cylinder.
Preferably, in order to make the cut surface smoother, the first cutting part 362 includes a first upper cutter, a first lower cutter, and a second opening and closing driving device for driving the upper cutter and the lower cutter to open and close. Specifically, the second opening and closing driving device comprises a third air cylinder and a fourth air cylinder; the output end of the third cylinder is connected with the first upper cutter, and the output end of the fourth cylinder is connected with the first lower cutter.
Preferably, the auxiliary portion 37 includes an auxiliary winding piece 371; the auxiliary winding 371 comprises a first connecting plate 3711, a second connecting plate 3712 and a third connecting plate 3713 which are adjacently arranged in sequence; a first limit winding groove 3714 is formed at one side of the first connecting plate 3711, a second limit winding groove 3715 is formed at one side of the third connecting plate 3713, and the distance between the first connecting plate 3711 and the third connecting plate 3713 is smaller than the width dimension of the negative electrode single piece. The first clamping part 361 enters the first limiting winding groove 3714 and the second limiting winding groove 3715, and the height size of the first limiting winding groove 3714 and the second limiting winding groove 3715 is equal to the diameter size of the cylindrical battery cell; the cylindrical battery cell is clamped in the first limiting winding groove 3714 and the second limiting winding groove 3715 after the cylindrical battery cell is completely wound, so that the cylindrical battery cell is conveniently placed in the shell in the following process.
Preferably, the first limit winding slot 3714 includes a first entry segment and a first arcuate winding segment; the second limit winding slot 3715 includes a second entry segment and a second arcuate winding segment. The first clamping portion 361 penetrates through the first extending section and the second extending section, the diameters of the first arc-shaped winding section and the second arc-shaped winding section are equal to the diameter of the cylindrical battery cell, and the first clamping portion 361 is wound in the first arc-shaped winding section and the second arc-shaped winding section, so that the winding process is smoother.
Preferably, the auxiliary section 37 further includes an auxiliary conveyor belt 372 that conveys the auxiliary winding member 371; the auxiliary winding member 371 is fixedly coupled to the auxiliary conveyor belt 372. The auxiliary winding member 371 is circularly conveyed by the auxiliary conveyor belt 372, which facilitates the circular operation.
Preferably, in order to improve work efficiency, the taping part 38 includes a tape supply part 381 that supplies the termination tape roll, an adsorption part 382 that adsorbs the termination tape roll, and a second cutting part 383 that cuts the termination tape roll.
Preferably, the adsorption part 382 includes a vacuum adsorption head 3821 that adsorbs the termination tape roll; the lower surface of the vacuum adsorption head 3821 forms an arc adsorption surface matched with the outer circumferential surface of the battery core. The arc-shaped adsorption surface is matched with the outer circumferential surface of the battery core, so that the termination adhesive tape adsorbed by the vacuum adsorption head 3821 is more easily adhered to the battery core; specifically, the vacuum generator is used for sucking, so that the vacuum adsorption head 3821 generates negative pressure to firmly adsorb the termination adhesive tape, and after the termination adhesive tape is attached to the battery cell, the vacuum generator is used for inflating to enable the air pressure of the vacuum adsorption head 3821 to return to zero, so that the termination adhesive tape cannot be torn off from the battery cell.
Preferably, in order to improve the working efficiency, the suction part 382 further includes a first elevation driving device 3822 that drives the vacuum suction head 3821 to ascend and descend. Specifically, the winding station of the battery cell is located right below the vacuum adsorption head 3821, and the first lifting driving device 3822 includes a lifting cylinder.
Preferably, the glue supply portion 381 includes a tape winding-up roller 3811 that winds up the termination tape roll, a fourth tension roller 3812 that tensions the termination tape roll, and a tape conveying roller 3813 that conveys the termination tape roll. The tape is conveyed by the tape conveying roller 3813, and the fourth tension roller 3812 flattens the conveyance of the tape roll.
Preferably, in order to improve the working efficiency, the second cutting part 383 includes a second upper cutter, a second lower cutter, and a third opening and closing driving device which drives the second upper cutter and the second lower cutter to open and close. Specifically, the third opening and closing driving device comprises a fifth air cylinder and a sixth air cylinder, the output end of the fifth air cylinder is connected with the second upper cutter, and the output end of the sixth air cylinder is connected with the second lower cutter.
Preferably, in order to improve the working efficiency, the tape conveying roller 3813 has a first output end outputting the terminating tape roll, and the second cutting part 383 is provided at one side of the first output end.
Preferably, in order to improve the working efficiency, the winding mechanism 35 further includes a second winding portion 39.
Preferably, the second winding portion 39 includes a second clamping portion that clamps the first separator, the negative electrode single sheet, the second separator, and the positive electrode single sheet; the second clamping part comprises a third clamping rod, a fourth clamping rod and a fourth opening and closing driving device for driving the third clamping rod and the fourth clamping rod to open and close. When the winding work of the first winding part 36 is completed, the second winding part 39 is immediately followed by the next winding work, improving the working efficiency, and specifically, the fourth opening and closing driving means includes a seventh cylinder and an eighth cylinder, an output end of the seventh cylinder and a third clamping rod are connected together, and an output end of the eighth cylinder and a fourth clamping rod are connected together.
Preferably, the second winding portion 39 further comprises a second movement driving device for driving the second clamping portion to move, a second rotation driving device for driving the second clamping portion to rotate, and a second expansion driving device for driving the second clamping portion to expand and contract; the output end of the second telescopic driving device is connected with the second clamping part, the output end of the second rotary driving device is connected with the second telescopic driving device, and the output end of the second mobile driving device is connected with the second rotary driving device. After the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet are clamped by the second clamping part, the second clamping part is driven to move onto the auxiliary part 37 through the second moving driving device, the second rotating driving device drives the second clamping part to rotate for winding, and the second telescopic driving device enables the clamping part to extend out of the battery cell after winding; specifically, the second movement driving device comprises a rodless cylinder, the second rotation driving device comprises a rotary cylinder, and the second telescopic driving device comprises a telescopic cylinder.
Preferably, the first supply mechanism 31 includes a first guide portion 311 that guides the first membrane, a first conveying portion 312 that conveys the first membrane, and a sizing portion 313 that sizes the upper surface of the first membrane. In order to make the connection of the layers more compact after the battery cell is wound and the wound battery cell more neat, adhesive glue is applied to the upper surface of the first diaphragm before winding, so that the upper surface of the first diaphragm is bonded with the lower surface of the anode single sheet after winding, the connection is more compact, and the conductivity is improved; the first guide part 311 includes a plurality of rotating rollers roll-connected to the surface of the first diaphragm, and the first conveying part 312 includes a plurality of sets of conveying parts; the conveying part comprises an upper conveying roller and a lower conveying roller, and a gap through which the first diaphragm passes is formed between the upper conveying roller and the lower conveying roller, so that the first diaphragm is conveyed more stably.
Preferably, for better connection, the sizing portion 313 includes a plurality of sets of sizing brushes, which are disposed at equal intervals in the conveying direction of the first membrane, and have a width dimension equal to that of the first membrane.
Preferably, the second feeding mechanism 32 includes a second guide portion 321 that guides the negative electrode individual pieces, a second conveying portion 322 that conveys the negative electrode individual pieces, and a negative electrode welding portion 323 that welds the negative electrode tabs on the negative electrode individual pieces. The second guide portion 321 includes a plurality of rotating rollers that are roll-connected to the surface of the negative electrode segment, and the second conveying portion 322 includes a plurality of sets of conveying portions; the conveying part comprises an upper conveying roller and a lower conveying roller, a gap through which the negative single sheet passes is formed between the upper conveying roller and the lower conveying roller, so that the negative single sheet is conveyed more stably, and the negative electrode lug is gradually welded on the negative single sheet by the negative electrode welding part 323 in the conveying process; specifically, the negative electrode welding part 323 includes a welding platform and a laser welder.
Preferably, the third supply mechanism 33 includes a third guide portion 331 that guides the second diaphragm, and a third conveying portion 332 that conveys the second diaphragm. The third guide part 331 includes a plurality of rotating rollers roll-coupled to the surface of the second diaphragm, and the third transfer part 332 includes a plurality of sets of transfer parts; the conveying part comprises an upper conveying roller and a lower conveying roller, and a gap through which the second diaphragm passes is formed between the upper conveying roller and the lower conveying roller, so that the conveying of the second diaphragm is more stable.
Preferably, the fourth supply mechanism 34 includes a fourth guide portion 341 that guides the positive electrode segment, a fourth transport portion 342 that transports the positive electrode segment, and a positive electrode welding portion 343 that welds the positive electrode tab to the positive electrode segment. The fourth guide portion 341 includes a plurality of rotating rollers that are roll-coupled to the surface of the positive electrode single sheet, and the fourth conveying portion 342 includes a plurality of sets of conveying portions; the conveying part comprises an upper conveying roller and a lower conveying roller, a gap through which the anode single sheet passes is formed between the upper conveying roller and the lower conveying roller, so that the anode single sheet is conveyed more stably, and the anode lug is gradually welded on the anode single sheet by the anode welding part 343 in the conveying process; specifically, the positive weld 343 includes a welding platform and a laser welder.
Preferably, the coating device 1 includes a glue making mechanism 11 for making positive and negative coatings, a coating mechanism 12 for coating the foil, a drying mechanism 13 for drying the pole pieces, and a rolling mechanism 14 for rolling the pole pieces. After the positive coating and the negative coating are manufactured by the glue manufacturing mechanism 11, the positive coating and the negative coating are respectively coated on the foil by the coating mechanism 12 to form a positive pole piece and a negative pole piece, and the coating is better attached to the foil by the drying mechanism 13 and the rolling mechanism 14.
Preferably, in order to improve the processing efficiency, the gel making mechanism 11 includes a first homogenizing device 15 that stirs the positive electrode coating material, and a second homogenizing device 16 that stirs the negative electrode coating material.
Preferably, the first homogenizing device 15 comprises a first stirring cylinder 151 and a first stirring device 152; the first stirring device 152 includes a first stirring shaft 1521, a plurality of first stirring parts 1522 connected to the outer circumferential surface of the first stirring shaft 1521, and a fifth rotation driving device for driving the first stirring shaft 1521 to rotate; the plurality of first stirring parts 1522 are arranged at equal intervals along the axial direction of the first stirring shaft 1521, the first stirring device 152 is arranged in the first stirring cylinder 151, the axial line of the first stirring cylinder 151 is overlapped with the axial line of the first stirring shaft 1521, and the output end of the fifth rotation driving device is connected with the first stirring shaft 1521. Pouring the positive electrode raw material into the first stirring cylinder 151, and driving the first stirring shaft 1521 and the first stirring part 1522 by the fifth rotation driving device of the first stirring device 152 to uniformly mix and stir the positive electrode raw material in the first stirring cylinder 151; specifically, the fifth rotational drive means includes a motor.
Preferably, the second homogenizing device 16 comprises a second mixing drum 161 and a second mixing device 162; the second agitating device 162 includes a second agitating shaft 1621, a plurality of second agitating parts 1622 connected to an outer circumferential surface of the second agitating shaft 1621, and a sixth rotation driving device for driving the second agitating shaft 1621 to rotate; the plurality of second agitating portions 1622 are provided at equal intervals in the axial direction of the second agitating shaft 1621, the second agitating device 162 is provided in the second agitating drum 161, the axis of the second agitating drum 161 and the axis of the second agitating shaft 1621 overlap each other, and the output end of the sixth rotary drive device is connected to the second agitating shaft 1621. Pouring the negative electrode raw material into the second mixing drum 161, and driving the second mixing shaft 1621 and the second mixing part 1622 by the sixth rotation driving device of the second mixing device 162 to mix and stir the negative electrode raw material in the second mixing drum 161 uniformly; specifically, the sixth rotary drive device includes a motor.
Preferably, the coating mechanism 12 includes a third homogenizing device 121 for re-stirring the positive electrode paint or the negative electrode paint, a storage device 122 for accommodating the positive electrode paint or the negative electrode paint, a foil conveying device 123 for outputting the foil, and a spraying device 124 for spraying the positive electrode paint or the negative electrode paint on the upper surface of the foil. When the anode paint is needed, the anode paint in the first stirring cylinder 151 is poured into the third homogenizing device 121, the third homogenizing device 121 inputs the paint into the storage device 122, and the spraying device 124 outputs the paint in the storage device 122 to the foil; when the negative coating is needed, the negative coating in the second mixing drum 161 is poured into the third homogenizing device 121, the third homogenizing device 121 inputs the coating into the storage device 122, and the spraying device 124 outputs the coating in the storage device 122 to the foil.
Preferably, the third homogenizing device 121 comprises a third stirring cylinder 1211 and a third stirring device; the third stirring device comprises a third stirring shaft, a plurality of third stirring parts connected with the outer circumferential surface of the third stirring shaft and a seventh rotation driving device for driving the third stirring shaft to rotate; a plurality of third stirring parts are arranged at equal intervals along the axial direction of the third stirring shaft, the third stirring device is arranged in the third stirring tube 1211, the axial line of the third stirring tube 1211 is overlapped with the axial line of the third stirring shaft, and the output end of the seventh rotation driving device is connected with the third stirring shaft; the first mixing drum 151 is connected to the third mixing drum 1211 via a first material conveying pipe, and the second mixing drum 161 is connected to the third mixing drum 1211 via a second material conveying pipe. When the positive electrode paint or the negative electrode paint is introduced into the third agitating tube 1211, the third agitating device agitates and mixes the paint in the third agitating tube 1211 again to be uniform; specifically, the seventh rotary drive device includes a motor.
Preferably, in order to improve the processing efficiency, the storage device 122 includes a storage part; a storage cavity for containing the positive electrode paint or the negative electrode paint is formed in the storage part, and the storage part is communicated with the third stirring cylinder 1211 through a third material conveying pipe.
Preferably, the foil conveying device 123 includes a bearing roller 1231 for bearing the foil roll, a second tensioning part 1232 for tensioning the foil, a foil conveying part 1233 for conveying the foil, a pole piece take-up roller 1234 for taking up the pole piece, and an eighth rotary driving device for driving the pole piece take-up roller 1234 to rotate; the output of the eighth rotary drive is coupled to the pole piece take-up roll 1234. Eighth rotation drive arrangement drive pole piece furl roll 1234 rolls up the pole piece gradually, and the foil is carried gradually and is formed the pole piece by spraying device 124 with coating evenly on the foil, and second tensioning part 1232 makes the surface of foil more level and more smooth, and foil conveying part 1233 makes the transport of foil more stable.
Preferably, in order to improve the working efficiency, the spray coating device 124 includes a spray coating part 1241 outputting the positive or negative electrode paint; the spraying part 1241 is communicated with the storage part through a fourth material conveying pipe.
Preferably, in order to improve the working efficiency, the spraying part 1241 includes a spraying nozzle 1242 which sprays the positive or negative electrode paint to the upper surface of the foil.
Preferably, the drying mechanism 13 includes a drying part 131, and a dryer 132 outputting hot air to the upper surface of the pole piece; the drying section 131 has an opening through which the pole piece passes. When the pole piece passes through the opening of the drying part 131, the dryer 132 outputs hot air to dry the coating on the pole piece, so that the coating is better attached to the pole piece.
Preferably, the rolling mechanism 14 comprises rolling means for rolling the pole pieces in order to obtain a better adhesion of the paint to the foil.
Preferably, in order to make the coating material adhere to the foil more well, the laminating part includes a first laminating roller 141 and a second laminating roller 142; the axes of the first rolling roller 141 and the second rolling roller 142 are horizontally arranged and perpendicular to the conveying direction of the pole pieces, a gap is formed between the first rolling roller 141 and the second rolling roller 142, the pole pieces penetrate through the gap, the first rolling roller 141 is in rolling connection with the upper surfaces of the pole pieces, and the second rolling roller 142 is in rolling connection with the lower surfaces of the pole pieces.
A manufacturing process of a cylindrical battery cell of a water-based anode comprises the following steps:
(1) coating positive coating or negative coating on the foil to form a positive pole piece and a negative pole piece;
(2) drying the positive pole piece and the negative pole piece;
(3) carrying out rolling treatment on the positive pole piece and the negative pole piece;
(4) slitting the rolled negative pole piece and positive pole piece to form a negative pole single piece and a positive pole single piece;
(5) baking the negative single piece and the positive single piece;
(6) and winding the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to form the battery core.
Like this, cut mechanism 4 through cutting device 2 and cut positive pole piece or negative pole piece, cut cutting device 41 of mechanism 4 and can not produce the interference to negative pole monolithic or positive pole monolithic in the removal of vertical direction when winding mechanism 5 is rolled up negative pole monolithic or positive pole monolithic, avoided the fragmentation, fall material and pincher trees problem.
Preferably, the positive electrode coating material and the negative electrode coating material are prepared before step (1).
Preferably, the positive electrode coating material and the negative electrode coating material are manufactured by the glue manufacturing mechanism 11.
Preferably, a plurality of raw materials of the positive electrode coating are poured into the first stirring drum 151 according to a predetermined ratio, and the fifth rotation driving device of the first stirring device 152 drives the first stirring shaft 1521 to rotate, so as to drive the plurality of first stirring parts 1522 to stir and mix the plurality of raw materials in the first stirring drum 151; the multiple raw materials of the negative electrode paint are poured into the second mixing drum 161 according to a predetermined ratio, and the sixth rotation driving device of the second mixing device 162 drives the second mixing shaft 1621 to rotate, so as to drive the multiple second mixing portions 1622 to mix and stir the multiple raw materials in the second mixing drum 161.
Preferably, in step (1), a positive electrode coating or a negative electrode coating is applied on the foil by the coating mechanism 12 to form a positive electrode sheet and a negative electrode sheet.
Preferably, when the positive coating needs to be applied on the foil, the positive coating in the first mixing drum 151 is introduced into the third mixing drum 1211, the positive coating is mixed by the third mixing device to prevent the positive coating after mixing from standing and solidifying, and then the positive coating is input into the storage device 122, and after the foil is horizontally conveyed by the foil conveying device 123, the positive coating in the storage part is sprayed on the upper surface of the foil by the spraying device 124 through the spraying nozzle 1242; when the negative coating needs to be applied to the foil, the negative coating in the second stirring cylinder 161 is introduced into the third stirring cylinder 1211, the negative coating is stirred by the third stirring device to prevent the stirred and mixed negative coating from standing and solidifying, the negative coating is input into the storage device 122, the foil is horizontally conveyed by the foil conveying device 123, and then the negative coating in the storage part is sprayed on the upper surface of the foil by the spraying device 124 through the spraying nozzle 1242.
Preferably, in the step (2), the positive electrode paint or the negative electrode paint coated on the foil is dried by the drying mechanism 13; the positive electrode plate or the negative electrode plate passes through the opening of the drying part 131, and the dryer 132 outputs heat seal into the opening to dry the positive electrode plate or the negative electrode plate.
Preferably, in the step (3), the coated positive electrode sheet and the coated negative electrode sheet are rolled by the rolling mechanism 14, and the positive electrode sheet or the negative electrode sheet passes through the first rolling roller 141 and the second rolling roller 142, so that the connection between the coating and the foil is firmer and is not easy to fall off.
Preferably, in the step (4), the pole pieces are slit by the slitting mechanism 4 of the slitting device 2, and the slit cathode single pieces or anode single pieces are wound by the winding mechanism 5.
Preferably, the plurality of cutting devices 41 equally cut the pole piece, the first cutting portion 411 and the second cutting portion 412 of the cutting devices 41 cut the pole piece, the winding device 52 of the winding mechanism 5 winds the negative pole single piece or the positive pole single piece, and the first winding disc 5212 and the second winding disc 5222 correspond to each negative pole single piece or each positive pole single piece and wind the negative pole single piece and the positive pole single piece.
Preferably, in the step (5), the negative electrode single pieces or the positive electrode single pieces on the first winding disc 5212 and the second winding disc 5222 are placed in a baking part to be baked, and the negative electrode single pieces and the positive electrode single pieces are baked and dried.
Preferably, in step (6), the first feeding mechanism 31, the second feeding mechanism 32, the third feeding mechanism 33 and the fourth feeding mechanism 34 output the first separator, the negative electrode single sheet, the second separator and the positive electrode single sheet, respectively, the first clamping portion 361 clamps and attaches the first separator, the negative electrode single sheet, the second separator and the positive electrode single sheet together, the first moving driving device 363 drives the first clamping portion 361 to move into the first limit winding groove 3714 and the second limit winding groove 3715 of the auxiliary winding member 371, the first rotating driving device 364 drives the first clamping portion 361 to rotate, the first separator, the negative electrode single sheet, the second separator and the positive electrode single sheet are wound, when the wound thickness is equal to the height of the first limit winding groove 3714 and the second limit winding groove 3715, the winding is stopped, the first cutting portion 362 cuts off the first separator, the negative electrode single sheet, the second separator and the positive electrode single sheet, the first rotary driving device 364 rotates continuously to enable the first clamping part 361 to wind the rear part into a cylindrical shape, after the glue supply part 381 outputs a termination adhesive tape, the vacuum adsorption head 3821 of the adsorption part 382 adsorbs the termination adhesive tape, the second cutting part 383 cuts the termination adhesive tape roll after the vacuum adsorption head 3821 adsorbs the termination adhesive tape, the first lifting driving device 3822 drives the vacuum adsorption head 3821 to move downwards to be matched with the first rotary driving device 364, so that the termination adhesive tape roll is adhered to the tail ends of the first diaphragm, the negative single sheet, the second diaphragm and the positive single sheet to form a battery cell, the first telescopic driving device 365 drives the first clamping part 361 to retract from the battery cell, the auxiliary conveyer belt 372 drives the auxiliary winding part 371 and the battery cell to convey forwards, and the second clamping part performs second winding operation.
The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.

Claims (10)

1. A cylindrical battery core manufacturing device of a water-based positive electrode comprises a coating device for coating foil to form a pole piece, a slitting device for slitting the pole piece to form a pole piece monomer, and a winding device for winding the pole piece monomer and a diaphragm to form a battery core; the slitting device comprises a slitting mechanism for slitting the pole pieces and a winding mechanism for winding the pole piece single bodies; the method is characterized in that: the cutting mechanism comprises a plurality of cutting devices for cutting the pole pieces to form a plurality of negative pole single pieces or a plurality of positive pole single pieces; the cutting device comprises a first cutting part and a second cutting part for cutting the pole piece; the axis of the first cutting part and the axis of the second cutting part are obliquely arranged, and the cutting devices are arranged at equal intervals in the width direction of the pole piece.
2. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 1, wherein: the first cutting portion includes a first circular saw blade; the second cutting portion includes a second circular saw blade.
3. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 2, wherein: the inclination angle of the axis of the first disc saw blade is 45 degrees; the axis of the second circular saw blade is inclined at an angle of 135 deg.
4. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 3, wherein: the cutting device also comprises a first rotary driving device for driving the first circular saw blade to rotate and a second rotary driving device for driving the second circular saw blade to rotate.
5. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 4, wherein: the winding mechanism comprises a tensioning device for tensioning the single pole piece and a winding device for winding the single pole piece.
6. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 5, wherein: the tensioning device comprises a first tensioning part for tensioning a plurality of negative single pieces or a plurality of positive single pieces.
7. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 6, wherein: the first tensioning part comprises a first tensioning roller, a second tensioning roller and a third tensioning roller; first tensioning roller and third tensioning roller and negative pole monolithic or anodal monolithic's lower surface roll connection, the second tensioning roller rolls with the upper surface roll connection of negative pole monolithic or anodal monolithic, the second tensioning roller is in between first tensioning roller and the third tensioning roller.
8. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 7, wherein: the furling device comprises a first furling part and a second furling part.
9. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 8, wherein: the first winding part includes a first guide roller and a plurality of first winding trays; the second winding part comprises a second guide roller and a plurality of second winding discs; the second guide roller is positioned below the first guide roller.
10. The apparatus for manufacturing a cylindrical cell of an aqueous positive electrode according to claim 9, wherein: the first winding part also comprises a third rotation driving device for driving the plurality of first winding disks to rotate; the second furling part also comprises a fourth rotation driving device which drives the plurality of second furling discs to rotate.
CN202011632773.3A 2020-12-31 2020-12-31 A kind of cylindrical battery production equipment and process of water-based positive electrode Active CN112786836B (en)

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CN110676436A (en) * 2019-10-09 2020-01-10 钱车华 Processing method of lithium ion battery pole piece
CN111185635A (en) * 2020-03-04 2020-05-22 点栈(绍兴)智能科技有限公司 Battery pole piece high-speed slitting complete set of assembly line equipment and slitting method
CN211789265U (en) * 2020-05-15 2020-10-27 昆山聚创新能源科技有限公司 Processing system of battery pole piece

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090226236A1 (en) * 2008-03-07 2009-09-10 Seiko Epson Corporation Cutter device and printing apparatus
CN102487150A (en) * 2010-12-03 2012-06-06 比亚迪股份有限公司 Winding method and device for battery cells
CN202241463U (en) * 2011-09-06 2012-05-30 深圳市格瑞普电池有限公司 Pole piece slitting cutting die
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CN211789265U (en) * 2020-05-15 2020-10-27 昆山聚创新能源科技有限公司 Processing system of battery pole piece

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Denomination of invention: A cylindrical battery cell manufacturing equipment and process for water-based positive electrode

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