CN103943823B - Electrodes of lithium-ion batteries ultrasonic wave roll forming machine - Google Patents
Electrodes of lithium-ion batteries ultrasonic wave roll forming machine Download PDFInfo
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- CN103943823B CN103943823B CN201410117791.6A CN201410117791A CN103943823B CN 103943823 B CN103943823 B CN 103943823B CN 201410117791 A CN201410117791 A CN 201410117791A CN 103943823 B CN103943823 B CN 103943823B
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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
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
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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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Abstract
A kind of electrodes of lithium-ion batteries ultrasonic wave roll forming machine, forms by unreeling motor (F), ultrasonic wave roll compacting assembly, frame (J), winding motor (S). Cylinder (Q), ultrasonic transducer (C), amplitude transformer (C2), roll mould head (C3) the composition ultrasonic wave roll compacting assembly that is linked in sequence successively. Anvil block (C4) is arranged in and rolls mould head (C3) below. Rolling between mould head (C3) and anvil block (C4) is to roll film station. The present invention utilizes the wave energy amplitude of compressional wave to be delivered to lithium ion battery coating pole piece, under cylinder pressure action, make the particle section thickness direction of lithium ion battery coating pole piece be subject to the compression of making a concerted effort of compressional wave pulse and cylinder pressure, utilize under the force action of shear wave pulse and cylinder pressure, the particle of lithium ion battery coating pole piece pushes mutually, particle rearranges extruding particle gap, can there is not parallel slip in roll compacting process in coating pole piece, can not cause coating and collector glued construction to be damaged.
Description
Technical field
The present invention relates to a kind of lithium ion battery manufacturing equipment, particularly a kind of for electrodes of lithium-ion batteries roll forming machine.
Background technology
Lithium ion battery is by positive pole, negative pole, barrier film and electrolyte constitutional chemistry system, the active material of anodal, cathode pole piece withTwo surfaces of copper foil of affluxion body or aluminium foil prepared slurry and are coated on by granular materials. Need to be by rolling together membrane process, roll compacting (orBe referred to as to roll film) be coated on the face coat of copper foil of affluxion body or aluminium foil, the gap between elimination activity material grains, to improve coatingPacking. Roll the quality of film and the performance of lithium ion battery has very close relationship, the little and excesssive gap of coating density all canCause the internal resistance of cell to increase, coating packing increases the also volume and capacity ratio of favourable raising battery. Existing roll forming machine has been continued to use traditionRolling mill principle, the problem that exists roll compacting process to cause the adhesion arrangement of coating and collector to peel off. As shown in Figure 1, existingThe membrane process that rolls of electrodes of lithium-ion batteries roll forming machine is: the gap between topping roll D1 and bottom roll D2 is that battery pole piece rolls film workPosition, lithium ion battery coating pole piece is along with topping roll D1 turns clockwise and bottom roll D2 is synchronously rotated counterclockwise and drags the level of dragging and moveMoving, the lithium ion battery coating pole piece between topping roll D1 and bottom roll D2, in topping roll D1 and the tangent position of bottom roll D2,Nip to drag through topping roll D1 and bottom roll D2 and drag, what enter topping roll D1 and bottom roll D2 rolls film station, the lithium ion battery coating utmost pointTwo finishing coats of sheet are pulled by the effect of roll crown frictional force, being pulled process, are also the processes of roll compacting, and lithium ion battery is coated withA particle part in layer pole piece two finishing coats, along section thickness direction perpendicular flow, plays the effect that increases packing; Also have oneParticle in partial coating is not section thickness direction perpendicular flow, and the particle of these non-section thickness direction perpendicular flow is notIncrease packing. Roll film dynamics research and show, lithium ion battery coating pole piece roll compacting process need drags-rolls through nip-draggingPress three phases. Lithium ion battery coating pole piece is distributed in the thickness of superficial layer, central core, collector and coating two-phase interface layerSection Direction distortion is had nothing in common with each other, and exists inhomogeneous along the stress distribution of pole piece thickness section direction; Tension and compression are enteringRoller place, collector and coating two-phase critical surface, go out roller place and all there are differences. According to Plastic Flow in Plastic working " processLaw of minimum resistance, it is fixed that the plastic deformation of lithium ion battery coating pole piece two sides coating granule and Plastic Flow are obeyed minimum dragRule, the each particle of coating granule will move towards a line of least resistance. Roll pleurodiaphragmatic in terspace reason according to above-mentioned theory analysis and existing roll,Roll film distortion and be not single increase packing along rolled piece section thickness direction drafts, law of minimum resistance has determined to roll film and has becomeAlso there is coated substance parallel slip amount in shape. As shown in Figure 1, in section thickness direction, distortion distributes, in Fig. 1 shown in arrow,Also there is parallel slip amount in superficial layer. The size of parallel slip amount, depends on nip angle α, and roller diameter is larger, and nip angle α is larger,Parallel slip amount is just less. The angle [alpha] of nipping is rolled piece while being nipped roll, taking the center line of topping roll D1 and bottom roll D2 as hanging downLine, the angle that the line at rolled piece and roll foremost contacting position and roll center and the two roll lines of centres form. Parallel slip amountFirst occur in superficial layer, parallel slip amount directly affects the drafts that in section thickness direction, distortion distributes, and parallel slip amount moreGreatly, the drafts that section thickness Direction distortion distributes is less, and densification actual effect fruit is poorer. Due to lithium ion battery coating pole piece two sidesCoating granule and collector are colloid glued constructions, and the bonding quality of coating granule and collector can affect the electronics of lithium ion batteryConduction inner resistance. Along with the parallel slip superficial layer degree of depth increases, will cause electrodes of lithium-ion batteries two sides coating granule and collectionThe colloid glued construction generation mechanicalness of fluid is peeled off, and finally causes the conduction of coating and collector to lose efficacy, and causes lithium ion batteryLocal pyrexia causes safety problem.
Existing electrodes of lithium-ion batteries roll forming machine is for larger nip angle α is to reduce parallel slip amount, and the selection of roller diameter moreCome greatlyr, most of electrodes of lithium-ion batteries roll forming machine products adopt diameter 800 mm dia rolls, and drive motors has reached 45KW,Cause energy consumption cost high.
Summary of the invention
The object of the invention is to overcome rolling membrane process and need to dragging-roll through nip-dragging of existing electrodes of lithium-ion batteries roll forming machineThe shortcoming of the three phases of pressure rolling steel principle, proposes a kind of ultrasonic roll forming machine of electrodes of lithium-ion batteries that improves roll forming machine reason.
Three stages of prior art are rolled film mode, and in roll compacting process, superficial layer, central core, collector and coating two-phase interface layer are notHomogeneous deformation, causes parallel slip, causes the relative displacement between electrodes of lithium-ion batteries two sides coating granule and collector. ThisKind of displacement effect causes that colloid is bonding to be peeled off with the displacement of current collector structure generation mechanicalness, electrodes of lithium-ion batteries ultrasonic wave of the present inventionRoll forming machine can overcome existing steel rolling principle roll forming machine need to, through the roll compacting mode of nip-dragging drag-roll compacting three phases, be improvedExisting steel rolling principle roll forming machine roll and be molded as superficial layer, central core, collector and coating two-phase interface layer and all have inhomogeneous changeThe problem of shape, has especially overcome the parallel slip that " nipping " stage causes.
Operation principle and the course of work of electrodes of lithium-ion batteries ultrasonic wave roll forming machine of the present invention are that the pressure of cylinder is by rolling mouldRoll compacting lithium ion battery coating pole piece. When roll compacting, because the water conservancy diversion of hyperacoustic compressional wave compression and shear wave interacts,Particle in coating pole piece is compressed only for the volume under pressure with section thickness direction, make pole piece coating reach uniform densification solidity.The thrust of cylinder makes ultrasonic transducer, amplitude transformer, it is descending to roll mould, when electrodes of lithium-ion batteries is in rolling mould head and anvilSeat between roll compacting station time, cylinder thrust make to roll mould head compress electrodes of lithium-ion batteries, pressure-acting is in coating pole piece affluxThe lithium ion battery coating layer of active substance of the upper and lower surface of body, coating is under pressure to be increased closely knit with hyperacoustic roll compacting of making a concerted effortDegree.
The technical scheme of electrodes of lithium-ion batteries ultrasonic wave roll forming machine of the present invention is as follows.
Electrodes of lithium-ion batteries ultrasonic wave roll forming machine of the present invention is by unreeling motor, being installed on ultrasonic wave roll compacting assembly and receipts in frameVolume motor composition. Unreel motor and winding motor and be arranged in respectively the ultrasonic module left and right sides. Ultrasonic wave roll compacting assembly by cylinder,Ultrasonic transducer, amplitude transformer and roll mould head composition, cylinder, ultrasonic transducer, amplitude transformer, roll mould head order successivelyConnect up and down: cylinder is fixed on the back timber of frame, the lower end of cylinder connects ultrasonic transducer, and ultrasonic transducer lower end connectsConnect amplitude transformer, amplitude transformer lower end connects rolls mould head, and rolling a mould arranged beneath has anvil block. Amplitude transformer with roll a mould junctionHousiung separator on elastic spacing cover is installed.
Described ultrasonic transducer optional with operating frequency be 20KHz or 40KHz, preferably 40KHz. Described amplitude transformer is selectedTitanium or aluminium alloy manufacture, preferable alloy titanium. Described elastic spacing cover is selected spring steel or aluminium material manufacture, preferably aluminiumMaterial.
When lithium ion battery coating pole piece enters the roll compacting station rolling between mould head and anvil block, under the pressure-acting of cylinder, andUnder the water conservancy diversion interaction of the compression of hyperacoustic compressional wave and shear wave, the particle in coating pole piece coating is only with section thickness directionVolume under pressure compression, makes pole piece coating reach uniform densification solidity. Unreeling motor veers away lithium ion battery coating pole piece into entering to rollPressure station unreels, and winding motor traction is left the rolling of roll compacting station through the electrodes of lithium-ion batteries of roll compacting, the rolling of winding motor withUnreel unreeling of motor synchronous.
It is descending that described cylinder promotes ultrasonic wave roll compacting assembly, exerts pressure to electrodes of lithium-ion batteries.
Described ultrasonic wave roll compacting assembly converts electric energy to mechanical vibrational energy by ultrasonic transducer. Shaking of ultrasonic transducerMoving ripple has compressional wave and shear wave, in the time that direction of vibration is vertical with the direction of propagation, is called shear wave; When direction of vibration consistent with the direction of propagationTime, be called compressional wave. Ultrasonic transducer operating frequency has 15KHz, 18KHz, 20KHz, 40KHz etc., and different frequency hasVarious amplitude value, the high vibration amplitude of frequency is little, and the low vibration amplitude of frequency is large. Electrodes of lithium-ion batteries ultrasonic wave roll forming machine of the present inventionBe directed to particulate matter mixture in colloid in lithium ion battery coating and positive and negative pole material, selecting frequency is high, and amplitude is littleUltrasonic transducer, the particle that is conducive to coating flows within the scope of microsize, therefore optional with operating frequency be 20KHz orThe ultrasonic transducer of 40KHz, preferably operating frequency is 40KHz.
Ultrasonic wave rolls film makes the principle of electrodes of lithium-ion batteries coating increase packing be:
1, utilize the wave energy amplitude of compressional wave to be delivered to the particle of lithium ion battery coating layer of active substance, same in cylinder pressure effectTime, make lithium ion battery coating layer of active substance section thickness direction be subject to the force action of compressional wave and cylinder pressure and compress.
2, utilize the force action of shear wave and cylinder pressure, the particle of lithium ion battery coating layer of active substance pushes mutually, particleExtruding rearranges particle mutually, and particle rearranges and pushed intergranular gap, and what rearrange at the particle of coating is sameTime, cylinder applies the pressure of section thickness direction, and coating layer of active substance section thickness direction is compressed and increases packing, livesProperty material coating increase in packing process at thickness direction parallel slip can not occur, can not cause coating layer of active substance and affluxBody glued construction is damaged.
Based on compared with steel rolling principle roll forming machine, the membrane process that rolls of the present invention is without through nip-dragging drag-roll compacting three rank with existingSection, therefore, has overcome roll compacting process superficial layer, central core, collector and the inhomogeneous deformation of coating two-phase interface layer, causes flatThe shortcoming of line slip.
Electrodes of lithium-ion batteries has two kinds of forms, and a kind of is gap coating pole piece, and another kind is continuously coating pole piece. Below forTwo kinds of different coating pole pieces, illustrate that respectively gap is coated with structure and the continuous coating pole piece ultrasonic continuous of pole piece ultrasonic wave roll forming machineRoll membrane structure.
1, the structure of gap coating electrodes of lithium-ion batteries ultrasonic wave roll forming machine
The all parts position relationship of the ultrasonic gap roll compacting assembly of gap coating electrodes of lithium-ion batteries ultrasonic wave roll forming machine is:Described cylinder is fixed on the back timber of gap coating electrodes of lithium-ion batteries ultrasonic wave roll forming machine frame, and the lower end of cylinder connects superAcoustic wave transducer, the lower end of ultrasonic transducer connects amplitude transformer, and the lower end of amplitude transformer connects rolls mould head. Amplitude transformer with roll filmOn the crossbeam of pressure head junction frame, elastic spacing cover is installed. Roll that mould head below is coaxially arranged an anvil block, roll mould head and anvilBetween seat, be that electrodes of lithium-ion batteries rolls film station. Cylinder lower end is also furnished with rectangle limit for height pad.
The film that rolls of electrodes of lithium-ion batteries carries pole piece to be drawn and unreeled motor feeding with pole piece rolling by winding motor and synchronizeed.
While rolling film, the thrust of cylinder makes ultrasonic gap roll compacting assembly descending. When electrodes of lithium-ion batteries is by rolling mould head and anvilBetween seat, while rolling film station, cylinder thrust makes to roll mould head and pushes down lithium ion battery coating pole piece, lithium ion battery coating pole piece withAnvil block compresses, and anvil block is arranged in and rolls mould head below, is arranged on the I-beam of frame, in rigidity and the strength support of I-beamUnder, make cylinder pressure act on lithium ion battery coating pole piece, the lithium ion battery active material of lithium ion battery coating pole pieceBe compressed. For fear of excess compression, be furnished with rectangle limit for height pad in cylinder lower end, constraint cylinder downward storke, rectangle limitThe height of high pad is determined according to the thickness of the lithium ion battery coating layer of active substance of pole piece upper and lower surface.
The effect of described amplitude transformer is by the mechanical oscillation Amplitude amplification of transducer output, makes concentration of energy at less radiating surfaceOn. Amplitude transformer is called again supersonic concentrator, is a cylindric metal device, and amplitude transformer uses Titanium or aluminium alloy manufacture, excellentSelect Titanium.
The described effect of rolling mould head is: the particle in pole piece coating is done by the water conservancy diversion of hyperacoustic compressional wave compression and shear waveMerit, only compresses the particle in pole piece coating with the drafts of section thickness direction, make pole piece coating reach uniform densification realDegree. Roll mould head and can select Titanium, aluminium alloy, HAP-72 steel, APS-60 steel making, preferable alloy titanium.
Described anvil block is the datum level that rolls film station plane, is the stressed fulcrum of restriction cylinder stroke. Pole piece in roll mould head withBetween anvil block when working region, cylinder and the pressure and the ultrasound waves energy that roll the transmission of mould head are subject to electrodes of lithium-ion batteries coatingTo roll compacting.
Cylinder, ultrasonic transducer, amplitude transformer and roll the mould head composition ultrasonic gap roll compacting assembly that is linked in sequence successively, ultrasonicRipple roll compacting assembly is arranged on frame back timber, and anvil block is arranged in and rolls mould head below, is arranged on the I-beam of frame.
Described elastic spacing cover is arranged on amplitude transformer connection and rolls on the housiung separator of interface position of mould head, to ultrasonic wave roll compactingAssembly is radially spacing. The vibration wave that the spring function of elastic spacing cover has been isolated amplitude transformer conducts to frame, and elastic spacing cover is selectedSpring steel material or aluminium material manufacture, preferably aluminium material manufacture.
Described rectangle limit for height pad is arranged on the gear beam of frame of cylinder lower end, and gear Liangping line position is in the crossbeam of frame and frameBetween back timber, play the effect of restriction cylinder downward storke, thereby realize the restriction that lithium ion battery coating pole piece rolls film thickness.
The described motor that unreels is by the lithium ion battery coating pole piece scroll material of film to be rolled, according to rolling film speed, successively to rollingFilm station is sent into lithium ion battery coating pole piece, sends into while unreels.
Described winding motor is fixed the termination, discharging one end of lithium ion battery coating pole piece draw, and winding motor will be through rollingThe lithium ion battery coating pole piece of film is collected and rolling. The rolling of winding motor with unreel unreeling of motor and synchronize and carry out.
Gap coating method lithium ion battery coating pole piece, in the lithium ion battery activity of its copper foil of affluxion body or aluminium foil upper and lower surfaceThere is coating marker space, gap in material coating. Roll rolling film and need aiming at the border of coating of mould head, roll mould head roll film work step withLithium ion battery coating pole piece feeding unreel motor to unreel feeding synchronous, according to the gap coating method lithium ion battery coating utmost pointBetween two marker spaces of sheet, be the coating that need to roll film, that is, the coating between two marker spaces is aimed at and is rolled mould head, startsCylinder is descending, completes and once rolls film.
Unreel motor lithium ion battery coating pole piece unreeled toward the feeding of roll compacting station, the rolling of winding motor with unreel putting of motorVolume is synchronous. The coating pole piece length that feeding unreels equates with rolling rolling coating pole piece length.
2, be coated with continuously the structure of electrodes of lithium-ion batteries ultrasonic wave roll forming machine:
Coating electrodes of lithium-ion batteries ultrasonic wave roll forming machine is by unreeling motor, ultrasonic continuous roll compacting assembly and winding motor group continuouslyBecome. Unreel the left and right sides that motor and winding motor are arranged in respectively ultrasonic continuous roll compacting assembly.
Ultrasonic continuous roll compacting assembly is made up of ultrasonic pressure vibrator and Dao Zhen mechanism.
Ultrasonic pressure vibrator is rolled mould head, embraces ring, bearing shell, elasticity baffle ring, is connect electric slip ring seat, shaft coupling, roller by roll-typeFormula is rolled a mould drive motors, motor cabinet, ultrasonic transducer, amplitude transformer, cylinder composition. Initiatively rubber roll, active rubber roll driveMoving motor, pass the oval steel band that shakes, driven rubber roll, oval steel band deflector roll composition Dao Zhen mechanism, also comprise rectangle anvil block.
The all parts position relationship of ultrasonic continuous roll compacting assembly is: roll-type is rolled the axial one end of mould head and connected amplitude transformer, becomesWidth device connects ultrasonic transducer through the interior circular hole of elasticity baffle ring, and ultrasonic transducer is through the interior circular hole and the connection that connect electric slip ring seatAxial organ connects. Shaft coupling connects roll-type and rolls a mould drive motors. Described amplitude transformer is installed on the bearing shell inner circle of embracing circular hole in ringKong Zhong, the bottom of described armful of ring is fixed on cylinder top. Roll-type roll mould head be arranged in pass shake in oval steel band, roll-type is rolled filmThe external diameter of pressure head is tangent with the inner circle that passes the oval steel band that shakes, and the ring outer lower side that passes the oval steel band that shakes is furnished with rectangle anvil block, passesShaking between oval steel band and rectangle anvil block is to roll film station.
The shake axial side of major diameter of oval steel band of biography is furnished with initiatively rubber roll and driven rubber roll. Initiatively rubber roll is at the biography ellipse that shakesOutside steel band ring, initiatively the cylindrical of rubber roll is tangent with the cylindrical that passes the oval steel band that shakes; Driven rubber roll is arranged in and passes the oval steel band that shakesIn, driven rubber roll cylindrical is tangent with the inner circle that passes the oval steel band that shakes. Initiatively rubber roll and driven rubber roll clamp and pass the oval steel band that shakes.It is oval steel band deflector roll with driven rubber roll opposite side in opposite directions that biography is shaken in oval steel band, cylindrical and the biography of oval steel band deflector rollThe inner circle of oval steel band of shaking is tangent, and the length constraint between driven rubber roll and oval steel band deflector roll passes the ellipse of oval steel band that shakeCircularity. The shake ring outer lower side of oval steel band of biography is furnished with rectangle anvil block, passes the gap shaking between oval steel band and rectangle anvil blockIt is the station that coating pole piece rolls film.
While rolling film continuously, when coating pole piece shakes oval steel band and rectangle anvil block station position by biography continuously, ultrasonic transducerThe ultrasonic wave of output rolls mould head by roll-type and is passed to the oval steel band that shakes, and is passed to the coating utmost point by the biography oval steel band that shakesSheet. Synchronize with ultrasonic transducer, start cylinder drop-down, the ring of embracing that is fixed on cylinder top is the row of being left behind, and embraces ring descendingBe arranged in the amplitude transformer of embracing in the interior circular hole of ring thereupon descending, it is also thereupon descending that the roll-type being connected with amplitude transformer is rolled mould head, makes rollerFormula is rolled mould head and is compressed the wall that passes the oval steel band that shakes. The pressure of cylinder applies pressure by the biography oval steel band that shakes to coating pole piecePower, is compressed coating pole piece.
The mechanism of action of the compressional wave of ultrasonic transducer is: under the lower pressure force action of compressional wave and cylinder, coating pole piece is coated withParticle in layer mutually pushes and rearranges;
The mechanism of action of the shear wave of ultrasonic transducer is: the drop-down pressure initiation at shear wave and cylinder is made a concerted effort, compression coating pole pieceIn particle. Rolling membrane process pole piece coating is only compressed in section thickness direction. Coating pole piece and the biography oval steel band ellipse that shakesThe contact-making surface of long axis direction is plane contact, thereby the roll forming machine that has overcome traditional steel rolling principle rolls the coating that film nip angle α causesThe defect of the particle parallel slip of pole piece.
Owing to rolling film in continuous state, coating pole piece unreel speed and roll-type roll mould head rotation must with the biography oval steel band that shakesThe linear velocity of ring rotation is synchronous. Roll-type is rolled a mould drive motors and is connected amplitude transformer by shaft coupling, and amplitude transformer connects ultrasonic wave and rollsRoller, when roll-type is rolled the rotation of mould drive motors, drives roll-type to roll the rotation of mould head. Shake oval steel band inner circle and roll-type of biography rolledA mould cylindrical is tangent, passes the oval steel band cylindrical that shakes with initiatively rubber roll cylindrical is tangent, and roll-type is rolled a mould drive motors and activeThe work of rubber roll drive motors is synchronous.
Initiatively one end of rubber roll connects initiatively rubber roll drive motors, and initiatively rubber roll drive motors rotation drives initiatively rubber roll rotation,Initiatively rubber roll is tangent with the ring outside wall surface that passes the oval steel band that shakes, and forms frictional drive structure, and initiatively rubber roll rotation drives to pass and shakeThe rotation of oval steel band, passes shake the rotational line speed of oval steel band and synchronizeing of coating pole piece, drives by controlling initiatively rubber rollMotor, unreel motor, winding motor and roll-type and roll a mould drive motors and realize.
Described roll-type roll mould head to one end connect amplitude transformer, amplitude transformer connects ultrasonic transducer through elasticity baffle ring, superThrough connecing, electric slip ring seat is connected with shaft coupling acoustic wave transducer, shaft coupling connects roll-type and rolls a mould drive motors, and roll-type is rolled mouldDrive motors is fixed on motor cabinet.
Described elasticity baffle ring is sleeved in the interior annulus of bearing shell, and bearing shell cylindrical is fixed in the interior circular hole of embracing ring, and armful ring bottom is solidFix on cylinder top.
The described electric slip ring seat base that connects is fixed on motor cabinet, connects electric slip ring seat and ultrasonic transducer and connects circuit. Make ultrasonicWave transducer rotation status must be in energising work.
The inner circle of described bearing shell is provided with elasticity baffle ring, and when the rotation of elasticity baffle ring, bearing shell plays the effect of slip.
Roll continuously film and be by described active rubber roll and drive and pass the oval steel band that shakes and rotate, the biography of the rotation oval steel band that shakes is pressed in the utmost pointSheet coating surface, the pressure of cylinder makes roll-type roll biography that mould head the is pressed in rotation oval steel band that shakes to exert pressure to pole piece coating.
The shake two ends of major diameter in the ring of oval steel band of biography, are furnished with respectively driven rubber roll and oval steel band deflector roll, drivenLength constraint between rubber roll and oval steel band deflector roll passes the ovality of the oval steel band that shakes. Arrange the biography of one end of driven rubber rollThe ring of oval steel band of shaking is furnished with initiatively rubber roll outward, and initiatively the cylindrical of rubber roll and the biography oval steel band that shakes is tangent, forms clamping and rubsWipe drive mechanism.
Initiatively rubber roll drive motors of the axial connection of described active rubber roll. When initiatively rubber roll drive motors rotates, pass by frictionThe shake oval steel band rotation of moving biography.
Described rectangle anvil block is arranged in the below that passes the oval steel band radial outside that shakes. Biography shake oval steel band footpath downwards with squarePosition on shape anvil block between plane is the station that rolls continuously film.
It is that coating pole piece is continuously by passing that continuous coating lithium ion battery coating pole piece ultrasonic wave roll forming machine rolls film working method continuouslyWhile shaking oval steel band and rectangle anvil block station position, the shear wave that roll-type is rolled the output of mould head is passed to the oval steel band that shakes, and pressesIn the shake vibration pole piece coating of oval steel band of biography, synchronous therewith, because cylinder is drop-down, be fixed on cylinder top and embrace ring and drawnDescending, embrace ring descending, be arranged in the amplitude transformer of embracing in the interior circular hole of ring thereupon descending, amplitude transformer is descending, connected roll-typeRoll mould head thereupon descending, it is descending that roll-type is rolled mould, makes roll-type roll mould head and compress and pass the oval steel band that shakes, the pressure of cylinderPower is exerted pressure to coating pole piece by the biography oval steel band that shakes, and is subject to the pressure of cylinder and force action that ultrasonic wave forms to make pole pieceCoating is compressed.
The mechanism of action of ultrasonic transverse wave is, cylinder moves vertically downward, and the ring of embracing that is fixed on cylinder top is pulled down, and installsPulled down at the amplitude transformer of embracing in ring, amplitude transformer is pulled down, and roll-type is rolled mould head and is pulled to down simultaneously, and roll-type is rolled mould headThe pressure-acting of the formation of downward active force, in the biography oval steel band that shakes, passes the oval steel band that shakes and exerts pressure to coating pole piece,Under shear wave and cylinder pressure force action, the particle in lithium ion battery coating pole piece pushes mutually, rearranges. CoatingThe effect that grain rearranges, coating pole piece has increased packing.
Cylinder vertically downward pressure and roll-type rolls the pressure dual effect that the compressional wave of mould head forms, and lithium ion battery coating pole piece is subject toIncrease packing to compression.
Lithium ion battery coating pole piece is plane contact with the contact-making surface that passes the oval steel band transverse direction of shaking, thereby has solvedThe roll forming machine of tradition steel rolling principle rolls the caused coating of particle parallel slip and the collector of the coating pole piece that film nip angle α causesThe problem of peeling off.
Owing to rolling film in continuous state, coating pole piece unreel speed and roll-type roll mould head rotation must with the biography oval steel band that shakesThe linear velocity of ring rotation is synchronous.
Roll-type is rolled a mould drive motors and is connected amplitude transformer by shaft coupling, and amplitude transformer connects ultrasonic wave roll, and roll-type is rolled mould headWhen drive motors rotation, drive roll-type to roll the rotation of mould head.
Initiatively rubber roll one end connects initiatively rubber roll drive motors, and initiatively rubber roll drive motors drives initiatively rubber roll rotation, initiatively rubber rollWith the shake frictional drive effect of oval steel band of biography, drive and pass the oval steel band rotation of shaking, pass the rotation linear speed of the oval steel band that shakesDegree and synchronize of pole piece transporting velocity, by control active rubber roll drive motors, unreel motor, winding motor and roll-type and roll mouldDrive motors is realized. Termination, the fixing lithium ion battery coating pole piece one end of winding motor, traction coating pole piece is to rolling film stationFeed, unreels motor coating pole piece is unreeled toward the feeding of roll compacting station, rolls film and carries pole piece and pole piece rolling, is led by winding motorDraw and unreel motor feeding and synchronously complete.
Compared with the existing roll forming machine based on steel rolling principle, the present invention is different from its roll and the tangent roll compacting scheme of roll cylindrical,It is to roll mould head by roll-type to apply the vibration of compressional wave and shear wave to the biography oval steel band that shakes that ultrasonic continuous of the present invention is rolled membrane structure, withIn time, is exerted pressure by cylinder. The vibration of compressional wave and shear wave and cylinder pressure are to be applied to the coating utmost point by the biography oval steel band that shakesSheet. Improve the existing coating pole piece causing based on steel rolling principle roll roll forming machine nip angle α and caused parallel slip rolling membrane process,Overcome the favourable quality of improving electrodes of lithium-ion batteries coating of this parallel slip.
Brief description of the drawings
Fig. 1 is existing roll roll forming machine fundamental diagram, in figure, between D1 topping roll, D2 bottom roll, is lithium ion batteryThe sectional plane of pole piece A0, A is copper foil of affluxion body or the aluminium foil of electrodes of lithium-ion batteries A0, A1 is on copper foil of affluxion body or aluminium foilThe lithium ion battery coating layer of active substance on lower two sides;
Fig. 2 is ultrasonic wave roll forming machine ultrasonic wave roll compacting modular construction schematic diagram of the present invention, in figure, and Q cylinder, C1 ultrasonic wave transducerDevice, C2 amplitude transformer, C3 roll mould head;
Fig. 3 is electrodes of lithium-ion batteries of the present invention gap coating ultrasonic wave roll forming machine principle assumption diagram, and in figure, Q cylinder, C1 surpassAcoustic wave transducer, C2 amplitude transformer, C3 roll mould head, A is copper foil of affluxion body or the aluminium foil of electrodes of lithium-ion batteries A0, and A1 isThe lithium ion battery coating layer of active substance of copper foil of affluxion body or aluminium foil upper and lower surface;
Fig. 4 is the ultrasonic roll forming machine specific implementation method of the present invention structural representation, in figure, Q cylinder, C1 ultrasonic transducer,C2 amplitude transformer, D elastic spacing cover, C3 roll mould head, A0 electrodes of lithium-ion batteries, C4 anvil block, J frame, J1 back timber,J2 crossbeam, J3 I-beam, J4 gear beam, F unreel motor, S winding motor, B rectangle limit for height pad;
Fig. 5 is electrodes of lithium-ion batteries gap coating plan view, and in figure, A1 is the lithium of copper foil of affluxion body or aluminium foil upper and lower surfaceIon battery coating layer of active substance, A2 is that A1 is the lithium ion battery coating layer of active substance of copper foil of affluxion body or aluminium foil upper and lower surfaceCoating marker space, gap;
Fig. 6 is G-G cutaway view of Fig. 5, and in figure, A is copper foil of affluxion body or the aluminium foil of electrodes of lithium-ion batteries A0, and A1 isThe lithium ion battery coating layer of active substance of copper foil of affluxion body or aluminium foil upper and lower surface;
Fig. 7 is that the present invention is coated with electrodes of lithium-ion batteries roll forming machine theory structure schematic diagram continuously, and in figure, 1 passes the oval steel band that shakesRing, 8 initiatively rubber roll, 9 driven rubber rolls, 10 oval steel band deflector rolls, C3-1 roll-type rolls mould head, C4-1 rectangle anvil block, A0-1Coating pole piece, Q-1 cylinder, F-1 unreel motor, S-1 winding motor;
Fig. 8 is the top view of Fig. 7, and in figure, C1-1 ultrasonic transducer, C2-1 amplitude transformer, 4 connect electric slip ring seat, 5 shaft couplingsDevice, 6 roll-types are rolled a mould drive motors, 1 and are passed initiatively initiatively rubber roll drive motors, 9 of rubber roll, 8-1 of the oval steel band that shakes, 8Driven rubber roll, 10 oval steel band deflector rolls, A0-1 coating pole piece, F-1 unreel motor, S-1 winding motor;
Fig. 9 is Fig. 7 M-M cutaway view, in figure, 1 pass shake oval steel band, C3-1 roll-type roll mould head, 2 armfuls of rings, 3 bearing shells,3-1 elasticity baffle ring, 4 connects electric slip ring seat, 5 shaft couplings, 6 roll-types and rolls initiatively glue of a mould drive motors, 7 motor cabinets, 8-1Roll drive motor, C1-1 ultrasonic transducer, C2-1 amplitude transformer, C4-1 rectangle anvil block, A0-1 coating pole piece, F-1 unreelMotor, Q-1 cylinder;
Figure 10 is the left view of Fig. 7, in figure, 1 passes the oval steel band that shakes, 2 armfuls of rings, 4 connect electric slip ring seat, 5 shaft couplings, 6Roll-type is rolled initiatively initiatively rubber roll drive motors, C1-1 ultrasonic wave transducer of rubber roll, 8-1 of a mould drive motors, 7 motor cabinets, 8Device, C2-1 amplitude transformer, A0-1 coating pole piece, F-1 unreel motor, Q-1 cylinder;
Figure 11 is N-N cutaway view of Fig. 7, and in figure, 1 passes initiatively initiatively rubber roll driving of rubber roll, 8-1 of the oval steel band that shakes, 8Motor, 9 driven rubber rolls, C3-1 roll-type are rolled mould head, 10 oval steel band deflector rolls.
Detailed description of the invention
Further illustrate the present invention below in conjunction with the drawings and specific embodiments.
Electrodes of lithium-ion batteries ultrasonic wave roll forming machine of the present invention is by unreeling motor, ultrasonic wave roll compacting assembly and winding motor, anvil block etc.Composition, unreels motor and winding motor and lays respectively at the left and right sides of ultrasonic wave roll compacting assembly, and anvil block is arranged in ultrasonic wave roll compacting groupRolling below mould head of part.
Described ultrasonic wave roll compacting assembly converts electric energy to the machinery energy that shakes by ultrasonic transducer. The acting of ultrasonic transducerVibration wave has compressional wave and shear wave, in the time that direction of vibration is vertical with the direction of propagation, is called shear wave; When direction of vibration and the direction of propagation oneWhile causing, be called compressional wave. Ultrasonic transducer operating frequency has 15KHz, 18KHz, 20KHz, 40KHz etc. Lithium of the present inventionIon battery pole piece ultrasonic wave roll forming machine is applied to the mixture of colloid and particle, the little ultrasonic wave transducer of selecting frequency high amplitude valueDevice, the particle that is conducive to coating flows within the scope of microsize, therefore optional with operating frequency be 20KHz or 40KHzUltrasonic transducer, preferably operating frequency is 40KHz ultrasonic transducer. Described ultrasonic wave roll compacting assembly is promoted by cylinderDescending, exert pressure to electrodes of lithium-ion batteries coating.
Ultrasonic wave rolls film makes the principle of coating increase packing be:
1, utilize the wave energy amplitude of compressional wave to be delivered to the particle of lithium ion battery coating layer of active substance, same in cylinder pressure effectTime, make lithium ion battery coating layer of active substance section thickness direction be subject to the force action of compressional wave and cylinder pressure and compress.
2, utilize the force action of shear wave and cylinder pressure, the particle of lithium ion battery coating layer of active substance pushes mutually, particleExtruding rearranges particle mutually, and particle rearranges and pushed intergranular gap, and what rearrange at the particle of coating is sameTime, cylinder applies the pressure of section thickness direction, and coating layer of active substance section thickness direction is compressed and increases packing, livesProperty material coating increase in packing process at thickness direction parallel slip can not occur, can not cause coating layer of active substance and affluxBody glued construction is damaged.
Electrodes of lithium-ion batteries has two kinds of forms, and a kind of is gap coating pole piece, and another kind is continuously coating pole piece, for two kindsThe pole piece of different coatings, the present invention has designed gap coating pole piece ultrasonic wave roll forming machine and continuous coating pole piece ultrasonic continuous is rolled filmMachine.
1, gap coating pole piece electrodes of lithium-ion batteries ultrasonic wave roll forming machine structure is as follows:
Gap coating pole piece electrodes of lithium-ion batteries ultrasonic wave roll forming machine is by unreeling motor F, being installed on the ultrasonic gap on frame JRoll compacting assembly and winding motor S composition, unreels motor F and winding motor S and lays respectively at the left and right two of ultrasonic gap roll compacting assemblySide. Ultrasonic gap roll compacting assembly by cylinder Q, ultrasonic transducer C1, amplitude transformer C2, roll a mould C3 and form, cylinder Q,Ultrasonic transducer C1, amplitude transformer C2, roll a mould C3 successively order up and down arrange; The lower end of cylinder connects ultrasonic transducerC1, the lower end of ultrasonic transducer C1 connects amplitude transformer, and the lower end of amplitude transformer C2 connects rolls mould head, rolls the below of a mould C3Be furnished with anvil block. Amplitude transformer C2 is provided with elastic spacing cover with rolling on the crossbeam J2 of frame J of a mould C3 junction.
Coating pole piece A0 enters while rolling between a mould C3 and anvil block C4 roll compacting station, under the pressure-acting of cylinder Q, and superUnder the compressional wave compression of sound wave and the interaction of the water conservancy diversion of shear wave, the particle in coating pole piece A0 is only with the volume under pressure of section thickness directionCompression, makes coating pole piece A0 reach uniform densification solidity. Unreel motor F and send coating pole piece A0 to the roll compacting station volume that veers away,Winding motor S traction is left the rolling of roll compacting station through the coating pole piece A0 of roll compacting, the rolling of winding motor S with unreel putting of motor FVolume is synchronous.
Figure 4 shows that the structure of the ultrasonic wave roll forming machine of gap coating electrodes of lithium-ion batteries, as shown in Figure 4, gap coating lithium fromThe ultrasonic wave roll forming machine of sub-battery pole piece is by ultrasonic gap roll compacting assembly, winding motor S and unreel motor F and form.
It is upper that ultrasonic gap roll compacting assembly is arranged on frame J, winding motor S, and unreel motor F and be arranged on frame J both sides. UltrasonicRipple gap roll compacting assembly by cylinder Q, ultrasonic transducer C1, amplitude transformer C2, roll a mould C3 and form, amplitude transformer with roll mouldThe crossbeam J2 of junction frame J is provided with elastic spacing cover D, on the I-beam J3 of frame J, anvil block C4 is installed, cylinder Q lower endThere is rectangle limit for height pad B.
The position relationship of all parts of ultrasonic gap roll compacting assembly is: described cylinder Q is fixed on gap coating lithium-ion electricThe back timber J1 of pond pole piece ultrasonic wave roll forming machine frame J is upper, and the lower end of cylinder Q connects ultrasonic transducer C1, ultrasonic wave transducerThe lower end of device C1 connects amplitude transformer C2, and the lower end of amplitude transformer C2 connects rolls a mould C3, amplitude transformer C2 with roll a mould C3The upper elastic spacing cover D that installs of the crossbeam J2 of junction frame J, rolls that the below of a mould C3 is coaxially arranged an anvil block C4, rolls filmBetween pressure head C3 and anvil block C4, be that electrodes of lithium-ion batteries rolls film station, anvil block C4 is arranged on the I-beam J3 of frame J.The lower end of cylinder Q is also furnished with rectangle limit for height pad B, and rectangle limit for height pad B is installed on the gear beam J4 of frame J.
The film charging transmission of rolling of coating pole piece is drawn and is unreeled motor F feeding by winding motor S and synchronously carries out.
The course of work of gap coating lithium ion battery coating pole piece ultrasonic wave roll forming machine is as follows:
The thrust of cylinder Q makes ultrasonic transducer C1, amplitude transformer C2, it is descending to roll a mould C3, and when coating pole piece, A0 passesWhile rolling the roll compacting station between a mould C3 and anvil block C4, it is upper and lower that cylinder Q thrust makes to roll a mould C3 compression coating pole piece A0The lithium ion battery coating layer of active substance A1 on two sides, coating pole piece A0 is rolled a mould C3 and anvil block C4 compresses, anvil block C4Under the rigidity and strength support of I-beam J3, make the pressure-acting of cylinder Q in the lithium ion of coating pole piece A0 upper and lower surfaceCell active materials coating A1 is compressed. In cylinder pressure effect simultaneously, the particle of lithium ion battery coating layer of active substance is disconnectedFace thickness direction is subject to the compressional wave pulse of ultrasonic transducer C1 and the compression of making a concerted effort of cylinder pressure. The horizontal stroke of ultrasonic transducer C1Under the force action of wave impulse and cylinder pressure, the particle of lithium ion battery coating layer of active substance pushes mutually, and particle rearrangesPush intergranular gap, rolled membrane process coating layer of active substance and be only compressed with section thickness direction, for fear of excessive pressureContracting, arranges rectangle limit for height pad B in cylinder Q lower end, the height of rectangle limit for height pad B according to the lithium of coating pole piece A0 upper and lower surface fromThe thickness of sub-cell active materials coating A1 is determined.
As shown in Figure 4, Figure 5, described coating pole piece A0 adopts gap coating method, and A1 is on copper foil of affluxion body or aluminium foilThe lithium ion battery coating layer of active substance on lower two sides, A2 is that A1 is the coating marker space, gap of upper and lower surface coating, rolls mould headThe film work step that rolls of C3 is synchronizeed with the boundary alignment of coating A1, and coating pole piece A0 enters and rolls rolling between a mould C3 and anvil block C4The speed of film station with roll a mould C3 and roll film action and synchronize. Roll a mould C3 and roll the synchronous of film action, by control cylinder QRealize.
2, be coated with continuously the structure of pole piece ultrasonic wave roll forming machine as follows:
Coating pole piece electrodes of lithium-ion batteries ultrasonic wave roll forming machine is by unreeling motor F-1, ultrasonic continuous roll compacting assembly and receipts continuouslyThe compositions such as volume motor S-1 and anvil block C4-1. Unreel motor F-1 and winding motor S-1 and lay respectively at ultrasonic gap roll compacting groupThe left and right sides of part.
Fig. 7, Fig. 8, Fig. 9, Figure 10 shows that the structure of the ultrasonic wave roll forming machine of continuous coating electrodes of lithium-ion batteries.
As shown in Fig. 7, Fig. 8, Fig. 9, Figure 10, winding motor S-1, and to unreel between motor F-1 be that ultrasonic continuous is rolledPress assembly.
Ultrasonic continuous roll compacting assembly is made up of ultrasonic pressure vibrator and Dao Zhen mechanism.
Ultrasonic pressure vibrator comprises that roll-type rolls a mould C3-1, embraces ring 2, bearing shell 3, elasticity baffle ring 3-1, connects electric slip ringSeat 4, shaft coupling 5, roll-type roll a mould drive motors 6, motor cabinet 7, ultrasonic transducer C1-1, amplitude transformer C2-1,Cylinder Q-1.
Dao Zhen mechanism comprises active rubber roll 8, active rubber roll drive motors 8-1, passes shake oval steel band 1, driven rubber roll 9, ellipseRound steel band deflector roll 10, also comprises rectangle anvil block C4-1.
The all parts position relationship of ultrasonic wave roll compacting assembly is: roll-type is rolled the axial one end of a mould C3-1 and connected amplitude transformer C2-1,Amplitude transformer C2-1 connects ultrasonic transducer C1-1 through the interior circular hole of elasticity baffle ring 3-1, and ultrasonic transducer C1-1 is through connecingThe interior circular hole of electric slip ring seat 4 is connected with shaft coupling 5, shaft coupling 5 connects roll-type and rolls a mould drive motors 6, described amplitude transformerC2-1 is installed in the interior circular hole of bearing shell 3 of the interior circular hole of embracing ring 2, embraces ring 2 bottoms and is fixed on cylinder Q-1 top.
The roll-type of ultrasonic continuous roll compacting assembly is rolled a mould C3-1 and is arranged in and passes below in oval steel band 1 ring that shakes, and roll-type is rolledThe external diameter of a mould C3-1 and biography are shaken, and to encircle inwall tangent for oval steel band 1, and the ring outer lower side that passes the oval steel band 1 that shakes is furnished withRectangle anvil block C4-1, it is to roll film station that biography is shaken between oval steel band 1 and rectangle anvil block C4-1.
As shown in Figure 7, the major diameter that passes the oval steel band 1 that shakes is axially arranged initiatively rubber roll 8 and driven rubber roll 9 in left side, mainMoving rubber roll 8 shakes outside oval steel band 1 in biography, and initiatively the cylindrical of rubber roll 8 is tangent with the cylindrical that passes the oval steel band 1 that shakes; DrivenRubber roll 9 is arranged in to pass and shakes in oval steel band 1, and driven rubber roll 9 cylindricals are tangent with the inner circle that passes the oval steel band 1 that shakes. InitiativelyRubber roll 8 clamps and passes the oval steel band 1 that shakes with driven rubber roll 9.
It is oval steel band deflector roll 10 with driven rubber roll 9 right side in opposite directions that biography is shaken in oval steel band 1, oval steel band deflector roll10 cylindrical is tangent with the inner circle that passes the oval steel band 1 that shakes, and the length between driven rubber roll 9 and oval steel band deflector roll 10 approximatelyBundle passes the ovality of the oval steel band 1 that shakes, and the transverse that passes the oval steel band 1 that shakes is longer, and while rolling film, nip angle α producesImpact just less.
The film charging transmission of rolling of electrodes of lithium-ion batteries is drawn and is unreeled motor F-1 feeding by winding motor S-1 and synchronously carries out.
Rectangle anvil block C4-1 is arranged in the shake ring outer lower side of oval steel band 1 of biography, passes shake oval steel band 1 and rectangle anvil block C4-1Between be arrange coating pole piece A0-1 roll film station position, coating pole piece A0-1 is continuously by biography shake oval steel band 1 and square, the shear wave that roll-type is rolled a mould C3-1 output is passed to the oval steel band 1 that shakes, by passing when shape anvil block C4-1 station the positionThe shake Wall Vibration coating pole piece A0-1 of oval steel band 1, meanwhile the Simultaneous Pressure of cylinder is by the biography oval steel band 1 that shakesWall exert pressure, lithium ion battery coating layer of active substance is compressed. The mechanism of action of ultrasonic transverse wave is, at shear waveUnder cylinder pressure force action, the particle in lithium ion battery coating layer of active substance pushes mutually, plays the effect rearranging,As Fig. 7, Fig. 8,, shown in Fig. 9 and Figure 10, cylinder Q-1 moves vertically downward, what be fixed on cylinder Q-1 top embraces ring 2Pulled down, be arranged on the amplitude transformer C2-1 embracing in ring 2 and pulled down, amplitude transformer C2-1 is pulled down, and roll-type is rolled mould headC3-1 is pulled to down simultaneously, and roll-type is rolled the pressure-acting of formation of the downward active force of a mould C3-1 in the 1 biography oval steel band that shakesRing 1, at cylinder Q-1, pressure and roll-type are rolled the lithium ion battery coating utmost point under the effect of the compressional wave that a mould C3-1 exports vertically downwardSheet is compressed has increased packing. Due to the shake nip angle α of oval steel band 1 and coating pole piece A0-1 of biography, the approximate straight angle, stingsEntering coating that coating pole piece A0-1 parallel slip that angle α causes causes and collector peels off problem and is overcome.
Owing to rolling film in continuous state, coating pole piece A0-1 unreel speed and roll-type roll a mould C3-1 rotation must with biographyThe linear velocity that the oval steel band 1 that shakes rotates is synchronous, and roll-type is rolled a mould drive motors 6 and connected amplitude transformer C2-1 by shaft coupling 5,Amplitude transformer C2-1 connects roll-type and rolls a mould C3-1, when roll-type is rolled a mould drive motors 6 and rotated, drives roll-type to roll mould headC3-1 rotation.
As shown in figure 11, initiatively rubber roll 8 one end connect initiatively rubber roll drive motors of 8-1, and 8-1 initiatively rubber roll drive motors drives mainMoving rubber roll 8 rotates, and initiatively rubber roll 8 and 1 passes the ring outside wall surface friction effect of the oval steel band that shakes, and driving passes the oval steel band 1 that shakes and revolvesTurn, pass shake the rotational line speed of oval steel band 1 and synchronize of coating pole piece A0-1, by control 8-1 active rubber roll drive motors,F-1 unreels motor, S-1 winding motor and roll-type and rolls a mould drive motors 6 and realize. S-1 winding motor is fixed lithium ion batteryThe traction of termination, coating pole piece one end, F-1 unreel motor lithium ion battery coating pole piece are unreeled toward the feeding of roll compacting station, S-1 rollingThe rolling of motor unreels unreeling of motor with F-1 and has synchronizeed.
As shown in Fig. 7, Fig. 8, Fig. 9, roll-type is rolled a mould C3-1 and is arranged in to pass and shakes in oval steel band 1 ring, and roll-type is rolled filmPressure head C3-1 external diameter and biography are shaken, and to encircle inwall tangent for oval steel band 1, and roll-type is rolled the axial one end of a mould C3-1 and connected amplitude transformerC2-1, amplitude transformer C2-1 connects ultrasonic transducer C1-1 through elasticity baffle ring 3-1, and ultrasonic transducer C1-1 is through connecing electricitySlip-ring seat 4 is connected with shaft coupling 5, and shaft coupling 5 connects roll-type and rolls a mould drive motors 6, and roll-type is rolled a mould drive motors6 are fixed on motor cabinet 7.
Described elasticity baffle ring 3-1 is sleeved on the inner circle of bearing shell 3. Bearing shell 3 cylindricals are fixed on embraces ring 2, embraces ring 2 bottoms and fixesOn cylinder Q-1 top. The described base that connects electric slip ring seat 4 is fixed on motor cabinet 7, connects electric slip ring seat 4 and ultrasonic wavesCan connect circuit by device C1-1. The inner circle of described bearing shell 3 is provided with elasticity baffle ring 3-1, plays cunning when elasticity baffle ring 3-1 rotationMoving effect.
Described biography is shaken in major diameter two end ring of oval steel band 1, arranges respectively driven rubber roll 9 cylindricals and the biography oval steel that shakesThe inner circle of band 1 is tangent, oval steel band deflector roll 10 cylindricals are tangent with the inner circle that passes the oval steel band 1 that shakes, and passes the oval steel that shakesBand 1 is arranged an end ring outside of driven rubber roll 9, arranges initiatively rubber roll 8, initiatively the cylindrical of rubber roll 8 and the biography oval steel band that shakesEncircle 1 cylindrical tangent, initiatively rubber roll 8 axially connects initiatively rubber roll drive motors 8-1.
Described biography oval steel band 1 footpath that shakes is outwards furnished with rectangle anvil block C4-1. Biography shake oval steel band 1 footpath and rectangle anvil blockPosition between the upper plane of C4-1 is the station that coating pole piece A0-1 rolls film.
Compared with roll forming machine based on steel rolling principle, the present invention rolls a mould C3-1 by roll-type and executes to the biography oval steel band 1 that shakesAdd compressional wave and shear wave vibration, exert pressure simultaneously by cylinder Q-1, compressional wave and shear wave vibration and cylinder Q-1 pressure are to pass throughShake oval steel band 1 of biography compresses and to apply.
Claims (7)
1. an electrodes of lithium-ion batteries ultrasonic wave roll forming machine, is characterized in that, described roll forming machine comprise unreel motor (F),Ultrasonic wave roll compacting assembly, frame (J) and winding motor (S); Unreel motor (F) and winding motor (S) is arranged in respectively ultrasonicThe left and right sides of ripple roll compacting assembly, ultrasonic wave roll compacting assembly is installed in frame (J); Described ultrasonic wave roll compacting assembly is by gasCylinder (Q), ultrasonic transducer (C1), amplitude transformer (C2), roll mould head (C3) composition; Cylinder (Q), ultrasonic transducer (C1),Amplitude transformer (C2), roll mould head (C3) successively order up and down connect: described cylinder (Q) is fixed on the back timber (J1) of frame (J)Upper, the lower end of cylinder (Q) connects ultrasonic transducer (C1), and the lower end of ultrasonic transducer (C1) connects amplitude transformer (C2),The lower end of amplitude transformer (C2) connects rolls mould head (C3), rolls that mould head (C3) below is coaxially arranged anvil block (C4), a luffingDevice (C2) is provided with elastic spacing cover with rolling on the housiung separator of mould head (C3) junction.
2. electrodes of lithium-ion batteries ultrasonic wave roll forming machine according to claim 1, is characterized in that described amplitude transformer(C2) elastic spacing cover (D) is installed with rolling on the crossbeam (J2) of mould head (C3) junction frame (J); DescribedRolling between mould head (C3) and anvil block (C4) is that electrodes of lithium-ion batteries rolls film station.
3. electrodes of lithium-ion batteries ultrasonic wave roll forming machine according to claim 1, is characterized in that, be coated with continuously lithium fromWhen sub-battery pole piece, the ultrasonic wave roll compacting assembly of described roll forming machine is ultrasonic continuous roll compacting assembly;
Described ultrasonic continuous roll compacting assembly is made up of ultrasonic pressure vibrator and Dao Zhen mechanism;
Described ultrasonic pressure vibrator by rolling mould head (C3), embrace ring (2), bearing shell (3), elasticity baffle ring (3-1),Connect electric slip ring seat (4), shaft coupling (5), roll-type roll a mould drive motors (6), motor cabinet (7), ultrasonic transducer (C1),Amplitude transformer (C2) and cylinder (Q) composition; Described Dao Zhen mechanism comprise initiatively rubber roll (8), initiatively rubber roll drive motors (8-1),Biography shake oval steel band (1), driven rubber roll (9), oval steel band deflector roll (10) and rectangle anvil block (C4);
The all parts position relationship of ultrasonic continuous roll compacting assembly is: roll-type is rolled the axial one end of mould head (C3) and connected luffingDevice (C2), amplitude transformer (C2) connects ultrasonic transducer (C1), ultrasonic waves through the interior circular hole of elasticity baffle ring (3-1)Can device (C1) through the interior circular hole that connects electric slip ring seat (4) be connected with shaft coupling (5), shaft coupling (5) connection roll-type rolls filmPressure head drive motors (6), described amplitude transformer (C2) is installed in the interior circular hole of bearing shell (3) of the interior circular hole of embracing ring (2),The bottom of embracing ring (2) is fixed on the top of cylinder (Q); Roll-type roll mould head be arranged in pass shake in oval steel band (1),That roll-type is rolled the shake ring inwall of oval steel band (1) of the external diameter of mould head (C3) and biography is tangent, passes the oval steel band (1) that shakesRing outer lower side is furnished with rectangle anvil block (C4), and it is to roll film station that biography is shaken between oval steel band (1) and rectangle anvil block (C4).
4. electrodes of lithium-ion batteries ultrasonic wave roll forming machine according to claim 3, is characterized in that, described biography is shaken ellipseThe major diameter of round steel band (1) axially left side is furnished with initiatively rubber roll (8) and driven rubber roll (9), initiatively rubber roll (8)Be positioned to pass and shake outside oval steel band (1), initiatively the shake cylindrical of oval steel band (1) of the cylindrical of rubber roll (8) and biography is tangent;Driven rubber roll (9) is arranged in to pass and shakes in oval steel band (1), the cylindrical of driven rubber roll (9) and the biography oval steel band (1) that shakesInner circle tangent; Initiatively rubber roll (8) clamps and passes the oval steel band (1) that shakes with driven rubber roll (9).
5. electrodes of lithium-ion batteries ultrasonic wave roll forming machine according to claim 3, is characterized in that, described biography is shaken ellipseIn round steel band (1), be oval steel band deflector roll (10) with driven rubber roll (9) right side in opposite directions, oval steel band deflector roll (10)Cylindrical and the shake inner circle of oval steel band (1) of biography tangent, between driven rubber roll (9) and oval steel band deflector roll (10)Length constraint passes the ovality of oval steel band (1) that shakes, and the transverse that passes the oval steel band (1) that shakes is longer, while rolling film, stingsEnter the impact that angle α produces less.
6. electrodes of lithium-ion batteries ultrasonic wave roll forming machine according to claim 3, is characterized in that, described active rubber roll(8) one end connects initiatively rubber roll drive motors (8-1), and initiatively rubber roll drive motors (8-1) drives initiatively rubber roll (8)Rotation.
7. electrodes of lithium-ion batteries ultrasonic wave roll forming machine according to claim 3, is characterized in that, described bearing shell (3)Inner circle be set with elasticity baffle ring (3-1); The described base that connects electric slip ring seat (4) is fixed on motor cabinet (7); DescribedThe inner circle of bearing shell (3) elasticity baffle ring (3-1) is installed.
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| CN106549137A (en) * | 2015-09-17 | 2017-03-29 | 杨家军 | It is a kind of can be with forward and reverse roll forming machine for rolling battery pole piece |
| CN107123786A (en) * | 2017-06-16 | 2017-09-01 | 广东亿鑫丰智能装备股份有限公司 | A kind of air-flotation type roll forming machine |
| DE102021117378A1 (en) | 2021-07-06 | 2023-01-12 | Volkswagen Aktiengesellschaft | Method and device for producing an electrode of a battery cell |
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| US6421892B1 (en) * | 1999-07-01 | 2002-07-23 | Hyundai Motor Company | Assembling machine for positive electrode plate for Ni-MH batteries |
| CN201796992U (en) * | 2010-08-13 | 2011-04-13 | 凯迈（江苏）机电有限公司 | Rolling and slicing direct-connected device for lithium-ion battery polar pieces |
| CN202423449U (en) * | 2011-11-30 | 2012-09-05 | 凯迈（江苏）机电有限公司 | Rolling processing equipment for pole piece of lithium battery |
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| JP2007305322A (en) * | 2006-05-09 | 2007-11-22 | Toyota Motor Corp | Battery and its manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6421892B1 (en) * | 1999-07-01 | 2002-07-23 | Hyundai Motor Company | Assembling machine for positive electrode plate for Ni-MH batteries |
| CN201796992U (en) * | 2010-08-13 | 2011-04-13 | 凯迈（江苏）机电有限公司 | Rolling and slicing direct-connected device for lithium-ion battery polar pieces |
| CN202423449U (en) * | 2011-11-30 | 2012-09-05 | 凯迈（江苏）机电有限公司 | Rolling processing equipment for pole piece of lithium battery |
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