CN104577215B - Pole piece winding method and equipment - Google Patents

Pole piece winding method and equipment Download PDF

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Publication number
CN104577215B
CN104577215B CN201410856361.6A CN201410856361A CN104577215B CN 104577215 B CN104577215 B CN 104577215B CN 201410856361 A CN201410856361 A CN 201410856361A CN 104577215 B CN104577215 B CN 104577215B
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China
Prior art keywords
pole piece
assembly
volume pin
roller
curve
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CN104577215A (en
Inventor
李逆
何爱彬
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Shenzhen Yinghe Technology Co Ltd
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Shenzhen Yinghe Technology Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • H01M10/0587Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

The invention discloses a pole piece winding method and equipment, and the equipment comprises a pole piece unwinding assembly, a pole piece winding assembly and a horizontal electronic cam assembly, wherein the horizontal electronic cam assembly comprises a servo motor, a coupler, a screw nut, a screw rod, a connecting block, a guide rod fixing seat, a horizontal pole piece roller and a pole piece feeding assembly, the output end of the servo motor is connected with the screw rod through the coupler, the pole piece feeding assembly is used for converging a first pole piece unwound by the first pole piece unwinding assembly and a second pole piece unwound by the second pole piece unwinding assembly, the pole piece feeding assembly comprises a first feeding pole piece roller and a second feeding pole piece roller, the servo motor is used for driving the horizontal pole piece roller to move along the horizontal direction, and the horizontal pole piece roller is used for applying horizontal compensation speed to the surface of a pole piece positioned between the pole piece unwinding assembly and the pole piece winding assembly.

Description

A kind of pole piece coiling method and apparatus
[technical field]
The present invention relates to a kind of pole piece coiling method and apparatus.
[background technology]
The square volume pin of existing pole piece coiling equipment is when winding pole piece, and the biggest ripple easily occurs in the linear velocity of pole piece Dynamic, cause the battery core quality being wound into that the problems such as dry linting easily occur.Although currently also there being some equipment linear velocity to pole piece Compensate, but the effect compensated not is very well, cause the battery core made to still suffer from certain problem.
[summary of the invention]
In order to overcome problem of the prior art, the invention provides a kind of pole piece coiling method and apparatus, to ensure volume On the basis of the quality of the battery core obtained, improve the speed of winding battery core.
A kind of pole piece coiling equipment, unreels assembly and pole piece coiling assembly including pole piece, also includes level electronic cam set Part, described level electronic cam pack includes servomotor, shaft coupling, feed screw nut, screw mandrel, contiguous block, guide post, guide post Fixing seat, horizontal pole piece roller and pole piece pan feeding assembly, described pole piece unreels assembly and includes that the first pole piece unreels assembly and the second pole Sheet unreels assembly, and the outfan of described servomotor is connected with described screw mandrel by described shaft coupling, described feed screw nut and set On described screw mandrel, described contiguous block is fixed with described feed screw nut, and one end of described contiguous block and described guide post is fixed, institute Stating guide post and fix seat through described guide post, described horizontal pole piece roller rotates fixing with the other end of described guide post, pole piece Pan feeding assembly is for converging described first pole piece and unreel the first pole piece that assembly unreels and described second pole piece unreeling assembly and unreels The second pole piece and described first pole piece and the second pole piece between barrier film, described pole piece pan feeding assembly includes the first pan feeding Pole piece roller and the second pan feeding pole piece roller, described horizontal pole piece roller described first pan feeding pole piece roller and the second pan feeding pole piece roller it Under, described servomotor is used for driving described horizontal pole piece roller to move in the horizontal direction, and described horizontal pole piece roller is used for being pointed to Described pole piece unreels the compensation speed of the surface applying level of the pole piece between assembly and described pole piece coiling assembly, described pole piece The volume pin of winding assembly is square volume pin.
In one embodiment, described level electronic cam pack also includes slide rail and roller fixture, described contiguous block with Described slide rail is slidably connected, and described roller fixture includes roller mount body, the first roller fixture side and the second roller fixture Side, the other end of described guide post fixes with described roller mount body, the first end of described horizontal pole piece roller and the second end It is rotationally connected with described first roller fixture side and the second roller fixture side respectively.
In one embodiment, described guide post includes the first guide post, the second guide post and roller fixture, described first First end of guide post is fixed with the first side of described contiguous block, the of the first end of described second guide post and described contiguous block Two sides are fixed, and the second end of described first guide post and the second end of the second guide post are all fixed with described roller mount body.
In one embodiment, described first pole piece unreel assembly include first pole piece material volume and the first pole piece tension adjustment Assembly, described second pole piece unreels assembly and includes the second pole piece material volume and the second pole piece tension adjustment assembly, described first pole piece Unreel to described pole piece pan feeding assembly through described first pole piece tension adjustment assembly from described first pole piece material volume, described second Pole piece unreels to described pole piece pan feeding assembly through described second pole piece tension adjustment assembly from described second pole piece material volume, described First tension adjustment assembly and the second tension adjustment assembly are respectively used to provide set point to the first pole piece and the second pole piece Tension force.
Present invention also offers and a kind of use described pole piece coiling method, comprise the steps:
Set up level electronic cam curve, described servomotor according to described level electronic cam curve to described level pole The distance that moves horizontally of sheet roller is controlled;
Wherein, in described level electronic cam curve:
Δl = ( L act + ΔL ) 2 - F 2 - L act 2 - F 2 ;
Wherein, LactRepresent that the real-time pole piece in the i-th curve point correspondence moment of described level electronic cam curve unreels length Degree, Δ L represents the step-length unreeled from the i-th curve point correspondence moment to the pole piece in i+1 curve point correspondence moment, and F represents Horizontal pole piece roller is to the vertical dimension of pole piece pan feeding assembly, and Δ l represents from the i-th curve point correspondence moment to i+1 curve The distance that horizontal pole piece roller described in the point corresponding moment moves in the horizontal direction.
In one embodiment, described servomotor according to current time actually detected to pole piece unreel length and level Pole piece roller moves horizontally distance, compensates the position of described horizontal pole piece roller.
In one embodiment, if described square volume pin width is relatively big, use less Δ L, if described square volume pin width Spend less, use bigger described Δ L.
In one embodiment, by the following algorithm described square volume pin width of calculating: H = 2 ( L act 1 - L 0 ) 2 + 2 A ( L act 1 - L 0 ) ;
Wherein, H is described square volume pin width, L0For after described square volume pin is threaded a needle and described square volume pin is in water The initial length of pole piece, L during level stateact1For rotating the moment pole piece after 180 ° when described square volume pin from described level Unreel length.
In one embodiment, volume pin servomotor is utilized according to volume pin electronic cam curve, described square volume pin to be carried out Control;Wherein, described volume pin electronic cam curve is obtained by following algorithm:
If i≤N, then y ( i ) = y ( i - 1 ) * i + ( D act - D 0 ) / ( i + 1 ) x ( i ) = x ( i - 1 ) * i + ( L act - L 0 ) / ( i + 1 ) z ( i ) = 1 ;
If i is > N, then y ( i ) = [ y ( i - 1 ) * ( N + 1 ) - y ( i - N - 1 ) + ( D act - D 0 ) ] / ( N + 1 ) x ( i ) = [ x ( i - 1 ) * ( N + 1 ) - x ( i - N - 1 ) + ( L act - L 0 ) ] / ( N + 1 ) z ( i ) = 1 ;
Wherein, y (i) and y (i-1) represents that described square volume pin is bent in the i-th of described volume pin electronic cam curve respectively Angle during line and the angle when the i-th-1 curve point, DactAnd D0Represent that described square volume pin is at described volume pin electronics respectively The real-time winding angle in the i-th curve correspondence moment of cam curve and square volume pin initial angle, x (i) and x (i-1) are respectively Represent that pole piece is at the length of described volume pin electronic cam curve i-th curve point and the length of the i-th-1 curve point, L0For working as Stating after square volume pin is threaded a needle and the initial length of pole piece when described square volume pin is in level, N is moving average value filtering The factor.
In one embodiment, if Lact-L'act> Δ L, then judgeWhether more than 0 and less than Vmax; If 0 < v < Vmax, then judge that the i-th curve point of described volume pin electronic cam curve is normal, and to described volume pin electric cam I+1 the curve point of curve calculates according to the algorithm of described volume pin electric cam, wherein, and D'actRepresent described volume pin electricity The real-time winding angle in the moment that the i-th curve point of sub-cam curve is corresponding, L'actRepresent described volume pin electric cam The real-time pole piece in the i-th-1 curve point correspondence moment of curve unreels length, VmaxIt is pole piece amplitude limit speed.
In one embodiment, when the control inadequate resource of the controller of described volume pin servomotor, by described volume pin Z (i) zero setting that some curve point of electronic cam curve are corresponding;Described volume pin servomotor is bent according to described volume pin electric cam Volume pin is controlled by line and following algorithm:
If during z (i)=0: y (i)=k*x (i)+s;
When z (i)=1: y (i)=a*x (i)3+b*x(i)2+cx(i)+d;
Wherein, k and s is the i-th-1 curve point, described volume pin electronic cam curve to be carried out first derivation obtain respectively Coefficient of first order and zero degree coefficient, a, b, c and d are to carry out described volume pin electronic cam curve the i-th-1 curve point respectively Three ordered coefficients, quadratic coefficients, coefficient of first order and the zero degree coefficient that three rank derivations obtain.
In one embodiment, first calculate described level electronic cam curve, then calculate described volume pin electric cam bent Line.
The invention has the beneficial effects as follows: by using level electronic cam pack, horizontal direction can be effectively utilized Motion carrys out the compensation of the speed limit degree to winding pole piece, so that the linear velocity of pole piece is stable in certain scope, and therefore pole The motor of sheet winding can work at higher rotational speeds.
[accompanying drawing explanation]
Fig. 1 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Fig. 2 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Fig. 3 is the square volume pin schematic diagram in an initial condition of an embodiment of the present invention;
Fig. 4 is the square volume pin schematic diagram at dead-center position of an embodiment of the present invention;
Fig. 5 is the square volume pin of an embodiment of the present invention schematic diagram under first time pole piece conversion winding radius;
Fig. 6 is the square volume pin of an embodiment of the present invention schematic diagram under second time pole piece conversion winding radius;
Fig. 7 is the square volume pin of an embodiment of the present invention schematic diagram under third time pole piece conversion winding radius;
Fig. 8 is that the square volume pin of an embodiment of the present invention changes the schematic diagram under winding radius at the 4th pole piece;
Fig. 9 is that the square volume pin of an embodiment of the present invention changes the schematic diagram under winding radius at the 5th pole piece;
Figure 10 is the volume pin servomotor speed when not using level electronic cam pack of an embodiment of the present invention Degree (angle) position curve;
Figure 11 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Figure 12 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Figure 13 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Figure 14 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Figure 15 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Figure 16 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Figure 17 is the partial structurtes schematic diagram of the pole piece coiling equipment of an embodiment of the present invention;
Figure 18 is that the pole piece coiling equipment of an embodiment of the present invention faces structural representation;
Figure 19 is the pole piece coiling equipment partial enlargement structural representation of Figure 18.
[detailed description of the invention]
Preferred embodiment to invention is described in further detail below.
As illustrated in fig. 1 and 2, the pole piece coiling equipment of a kind of embodiment, unreel assembly 51 or 52 and pole piece roll including pole piece Around assembly 55, level electronic cam pack 4, described level electronic cam pack 4 includes servomotor 41, shaft coupling 42, screw mandrel Nut 43, screw mandrel 44, contiguous block 45, guide post 46, guide post fix seat 48 and horizontal pole piece roller 49, described servomotor 41 Outfan is connected with described screw mandrel 44 by described shaft coupling 42, described feed screw nut 43 be enclosed within described screw mandrel 44, described Contiguous block 45 is fixed with described feed screw nut 43, and one end of described contiguous block 45 and described guide post 46 is fixed, described guide post 46 fix seat 48 through described guide post, and guide post 46 can be fixed seat 48 along guide post and slide, described horizontal pole piece roller 49 and institute The other end stating guide post 46 rotates fixing, and described servomotor 41 drives leading screw 44 to rotate, and screw mandrel 44 drives feed screw nut 43 Along screw mandrel 44 horizontal movement, and feed screw nut 43 drives guide post 46 horizontal movement by contiguous block 45, thus drives described water Mean pole sheet roller 49 moves in the horizontal direction.
Described pole piece unreels assembly and includes that the first pole piece unreels assembly 51 and the first pole piece unreels assembly 52, described pole piece roll Unreeling assembly 51 and the first pole piece unreels between assembly 52 around assembly 55 at described first pole piece, the such as first pole piece unreels group Part 51 and the first pole piece unreel assembly 52 and are respectively used to unreel positive plate and negative plate.Pole piece coiling equipment also includes for converging First pole piece unreels the first pole piece that assembly 51 unreels and the second pole piece unreels the pole piece pan feeding group that assembly unreels second pole piece of 5 Part 54, as it is shown in figure 1, pole piece pan feeding assembly 54 can also converge the barrier film between the first pole piece and the second pole piece further, as Shown in Figure 18 and 19, so, pole piece coiling assembly 55 will the first pole piece, the second pole piece and the first pole piece and the second pole piece it Between barrier film wind together.Described pole piece pan feeding assembly 54 is arranged on described first pole piece and unreels assembly 51 and the first pole piece unreels Between assembly 52, described pole piece pan feeding assembly includes the first pan feeding pole piece roller and the second pan feeding pole piece roller, described horizontal pole piece roller 49 are arranged on below described pole piece pan feeding assembly 54.
When pole piece unreels after assembly 4 or 5 unreels pole piece, pole piece coiling assembly 55 pole piece is wound during pole piece one End is wrapped on volume pin and performs rolling action, and the other end is unreeled assembly control material strip by pole piece and follows winding assembly blowing.The side of working as When shape volume pin rotates rolling with constant angular velocity, material strip passes through a first pan feeding pole piece roller and the strong point of the second pan feeding pole piece roller Constantly it is wrapped on square volume pin.Owing to the volume pin 56 of pole piece coiling assembly 55 is square volume pin, therefore at square volume pin 56 During winding pole piece, the winding radius of pole piece constantly changes, and causes the linear velocity of pole piece constantly to change, thus causes Being continually changing of pole piece tension force.Square volume pin 56 from vertical position as shown in Figure 4 to shown in Fig. 5 direction rotate time, pole piece Linear velocity be gradually increased until arriving maximum line velocity, continue afterwards during horizontal motion, the speed of pole piece by The least until minimizing linear velocity during horizontal level, then proceed in the direction motor process shown in Fig. 6, the line of pole piece Speed starts again to be gradually increased, and its linear velocity is similar to Figure 10 with the relation curve of time, goes round and begins again.The linear velocity of pole piece Wide fluctuations, cause pole piece tension force occur fluctuation, easily pull the most rolled battery core pole piece so that it is occur dislocation, The situations such as dry linting, have a strong impact on the life-span of battery core.
In the equipment of the present embodiment, described horizontal pole piece roller 49 is used for being pointed to described pole piece and unreels assembly and described pole The surface of the pole piece between sheet winding assembly applies the compensation speed of level, when the linear velocity of pole piece is less, horizontal pole piece roller 49 move right, and promote the right motion of pole piece, substantially to pole piece one speed pullled downwards of formation, thus the speed to pole piece Compensating, and when the linear velocity of pole piece is bigger, horizontal pole piece roller 49 is return, therefore the speed of pole piece is run more stable, The tension force of pole piece will not produce wide fluctuations, and the motor of pole piece coiling can work at higher rotational speeds.
In one embodiment, described level electronic cam pack 4 also includes slide rail 47, described contiguous block 45 and described cunning Rail 47 is slidably connected, the most horizontal pole piece rod 49 can more smoothly horizontal movement, more accurate to the level compensating of pole piece.
In one embodiment, described level electronic cam pack 4 also includes that roller fixture, described roller fixture include roller Mount body, the first roller fixture side 412 and the second roller fixture side 413, the first rod fixture side 412 and second Rod fixture side 413 is respectively arranged at the both sides of rod mount body, and the other end of described guide post 46 is fixed with described roller Part main body is fixed, the first end of described horizontal pole piece roller 49 and the second end respectively with described first roller fixture side 412 and Two roller fixture sides 413 are rotationally connected.
In one embodiment, described guide post 46 includes the first guide post, the second guide post and roller fixture, described First side of the first end of one guide post and described contiguous block 45 is fixed, the first end of described second guide post and described contiguous block Second side of 45 is fixed, the second end of described first guide post and the second end of the second guide post all with described roller mount body Fixing.
As shown in figure 11, the pole piece coiling equipment of a kind of embodiment, it is also possible to include cutting off tape sticking device the 1, first pole piece Cutting assembly the 72, second pole piece cutting assembly 721, membrane unwinding assembly, barrier film cutting assembly 710, battery core rubberizing assembly 711, Blanking assembly 712 and conveying assembly 713, wherein, the first pole piece unreels assembly 51 and includes first pole piece material volume the 511, first pole piece Correction assembly the 77, first pole piece caching correction assembly the 57, first pole piece traction component the 76, first pole piece tension adjustment assembly 75, First pole piece traveling correction assembly 58 and the first pole piece enter sheet folder 74, and the second pole piece unreels assembly 52 and includes the second pole piece material volume 21, second pole piece deviation correction assembly the 774, second pole piece caching correction assembly the 571, second pole piece traction component the 761, second pole piece is opened Power adjusting part the 751, second pole piece traveling correction assembly 581 and the second pole piece enter sheet folder 741.
Membrane unwinding assembly includes the first membrane unwinding assembly and the second membrane unwinding assembly, the first membrane unwinding assembly bag Including first barrier film material volume the 78, first diaphragm deviation rectifying assembly 781 and the first membrane tension assembly 79, the second membrane unwinding assembly includes Second barrier film material volume the 73, second diaphragm deviation rectifying assembly 731 and the second membrane tension assembly 732.
If Figure 11 is to shown in 16, cut off tape sticking device 1 and include putting glue assembly, the first doubling assembly, the first doubling driving group Part, the second doubling assembly, cutting knife 17, rubberizing block 25, described first doubling assembly include doubling block;First doubling drives assembly to use In driving described first doubling assembly closer or far from described rubberizing block 25.
At initial time, the height residing for rubberizing block is less than rubberizing block 25, when adhesive tape delivers to the first doubling from putting glue assembly During assembly, adhesive tape is clamped by doubling block, and then the first doubling drives assembly to drive the described doubling block of described rubberizing block to clamp Below adhesive tape extremely described rubberizing block 25, then, described second doubling assembly will be located in the adhesive tape below described rubberizing block 25 and compresses In the lower surface of described rubberizing block 25, the most described doubling block unclamps adhesive tape, and described first doubling drives described in Component driver the One doubling assembly moves toward initial position, and drives described first doubling assembly to drive described doubling block to rise, and makes described glue Carrying concordant with the lower surface of rubberizing block, the most described doubling block clamps described adhesive tape again, and then cutting knife 17 will be located in described patch The adhesive tape cutting of position between blob of viscose 25 and doubling block, then doubling block unclamps adhesive tape again, and the second doubling assembly also unclamps glue Band, the adhesive tape after last described rubberizing block 25 will cut off adsorbs and is attached on pole piece.
When adhesive tape is delivered to below rubberizing block 25 by moulding block compression adhesive tape, owing to moulding block has certain thickness, in order to protect Card moulding block will not encounter rubberizing block 25, and moulding block needs less than rubberizing block 25, but now adhesive tape and rubberizing block 25 injustice Together, it is impossible to effectively held by rubberizing block 25, therefore when moulding block returns initial position, need to rise a height again, make glue Carry concordant with the lower surface of rubberizing block 25, thus when cutting knife cuts off adhesive tape, adhesive tape can effectively be adsorbed by rubberizing block 25.
In one preferably embodiment, described first doubling assembly includes that the first doubling movable plate 110, first drives single Unit 12 and the first tumbler, described doubling block includes fixation clamp blob of viscose 14 and movable doubling block 16, described first driver element 12 Being fixed on described first doubling movable plate 110 with fixation clamp blob of viscose 14, axle is passed through in the middle part 13 of described first tumbler Holding and be fixed on described first doubling movable plate 110, the first round end 19 of described first tumbler drives list with described first The drive end of unit 12 connects, and the second round end 15 of described first tumbler is fixed with described movable doubling block 16, and described first Driver element 12 is used for driving described first tumbler to rotate, and then drives described movable doubling block 16 to paste close or remote from described solid Clamp blob of viscose 14, in one embodiment, when the drive end of the first driver element 12 moves down, movable doubling block 16 is upwards Moving and press close to fixation clamp blob of viscose 14, when the drive end of the first driver element 12 moves up, movable doubling block 16 is to moving down Dynamic and away from fixation clamp blob of viscose 14, and when described fixation clamp blob of viscose 14 and described movable doubling block 16 are pressed close to, can will pass Adhesive tape clamping between the two.
Described first doubling assembly can also include that movable roll 15, described movable roll 15 are fixed on described second round end 15 On, so, when fixation clamp blob of viscose 14 and movable doubling block 16 clamp adhesive tape, adhesive tape also has movable roll 15 to support simultaneously, it is ensured that Good clamping effect, if movable roll 15 is fixed on below fixation clamp blob of viscose 14, the second round end 15 is easily run into when rotating This fixing movable roll 15.
Cut off tape sticking device and can also include that cutter driving unit 112, described first doubling assembly also include doubling plate 113, described first doubling drives assembly to include the second driver element 11, described second driver element 11 and cutter driving unit 112 are fixed on described doubling plate 113, and the drive end of described second driver element 11 fixes described first doubling movable plate 110, Described second driver element 11 is used for driving described first doubling movable plate 110 to move up and down, and described doubling plate 113 is provided with leads Xiang Kong, the guide post of described first doubling movable plate 110 passes described pilot hole, and described cutter driving unit 112 is used for driving Described cutting knife moves up and down, to cut off the adhesive tape between fixing moulding block 14 and the second doubling assembly.
Cut off tape sticking device and can also include that the second doubling drives assembly, described second doubling to drive assembly to be used for driving institute State the second doubling assembly side-to-side movement adhesive tape with clamping different length, when one end of adhesive tape is delivered to tripping blob of viscose by moulding block During the lower section of rubberizing block 25 farther out, the second doubling drive assembly then drive the second doubling component movement to this remote position, Adhesive tape is clamped, otherwise, then the second doubling assembly is driven to the position of nearer rubberizing block 25 and clamps adhesive tape, thus cutting knife The adhesive tape of different length can be cut off, to be attached on the pole piece of correspondence.
In one embodiment, described second doubling assembly can also include the second doubling movable plate (not shown), Second doubling driver element the 23, second tumbler and doubling roller 22, described second doubling driver element 23 is fixed on described second On doubling movable plate, the middle part 21 of described second tumbler is fixed on described second doubling movable plate by bearing, institute The drive end of the first round end 24 and described second doubling driver element 23 of stating the second tumbler is connected, described second tumbler The second round end fix with described doubling roller 22, described second doubling driver element 23 is used for driving described second tumbler to turn Move and drive described doubling roller 22 to paste close or remote from described rubberizing block 25.In one embodiment, when the second doubling driver element When the drive end of 23 moves downward, the adhesive tape of top is compressed and on rubberizing block 25 by doubling roller 22, otherwise when the second doubling drives When the drive end of unit 23 moves upward, doubling roller 22, away from rubberizing block 25, departs from adhesive tape.
As shown in figures 14-17, cut off tape sticking device 1, also include pole piece severing conveying mechanism, described pole piece severing conveyer Structure includes the second pole piece traction component 761, pole piece cutter, first group of intermediate plate, second group of intermediate plate, pole piece pressure roller, roller frame, pole piece Cutter driving assembly, described pole piece pressure roller includes superior pole piece pressure roller 61 and inferior pole piece pressure roller 62, and described roller frame includes pressure roller Frame 614 and lower compression roller frame 615, as shown in Figure 4, exist between described first group of intermediate plate and second group of intermediate plate and be spaced, and described first Group intermediate plate includes the first upper clip 64 and the first lower clamping piece 63, and described second group of intermediate plate includes the second upper clip 616 and second time Intermediate plate 617, described upper pressure roller 61 and lower compression roller 62 are rotationally connected with described upper roller frame 614 and lower compression roller frame 615 respectively, described First upper clip 64 and the first lower clamping piece 63 are fixed with described upper roller frame 614 and lower compression roller frame 615 respectively, press from both sides on described second Sheet 616 is inclined upwardly near described first group of intermediate plate one end, described second lower clamping piece 617 near described first group of intermediate plate one end to Lower inclination, described pole piece cutter is positioned at the position at described interval, described pole piece pressure roller, first group of intermediate plate, second group of intermediate plate and Two pole piece traction components 761 are successively set on pole piece direction of advance, and described first group of intermediate plate and second group of intermediate plate are used for supporting institute Stating pole piece, described second pole piece traction component 761 and pole piece pressure roller are used for drawing described pole piece and travel forward, when described first group After intermediate plate and described second group of intermediate plate clamping pole piece, pole piece is cut to leading portion pole by described pole piece cutter in the position at described interval Sheet and back segment pole piece, first group of intermediate plate continues to keep clamping back segment pole piece, and described second group of intermediate plate unclamps described pole piece, then Leading portion pole piece is again clamped by the first traction component 761 to front haulage one segment distance (such as 3mm), the most described first group of intermediate plate Leading portion pole piece, described pole piece cutter moves to described first group of intermediate plate direction (pole piece pressure roller direction) and avoids being positioned at described interval Rubberizing position, adhesive tape is labelled to the both side surface of described pole piece and by described leading portion pole by described upper rubberizing block and lower rubberizing block respectively Sheet and back segment pole piece are bonding, and the second pole piece traction component 761 continuation traction pole piece travels forward afterwards.
In one embodiment, described first upper clip 64 is downward-sloping near described second group of intermediate plate one end, and described One lower clamping piece 63 is inclined upwardly near described second group of intermediate plate one end, so, carries through super-interval from first group of intermediate plate at pole piece During second group of intermediate plate, the lug on pole piece and pole piece is not easy to tilt upward, thus encounters second group of intermediate plate and touch askew Lug, is inclined upwardly due to the second upper clip 616 again and the second lower clamping piece 617 is downward-sloping, and above-mentioned situation odds is more Little.
Described cutting knife includes upper cutter 67 and the lower cutter 68 being oppositely arranged up and down, and upper cutter 76 is fixed on knife rest 612, Lower cutter 68 is driven by driving cylinder 611 and moves up and down along knife rest 612, and guide pillar 610 is fixed with lower cutter 68, and guide pin bushing 69 is fixed On knife rest 612, when lower cutter 68 moves up and down, guide pillar 610 moves up and down along guide pin bushing 69.
During complete machine work, the second pole piece starts to unreel, through the second pole piece deviation correction assembly 774 from the second pole piece material volume 521 Correction after, enter and cut off tape sticking device 1, cutting off in tape sticking device 1, the pole piece at preseting length interval is cut-off is divided into leading portion Pole piece and back segment pole piece, be then staggered position, and then the both sides of pole piece are labeled with adhesive tape, thus leading portion pole piece and back segment pole piece Bond together, then continued to draw to the second pole piece caching correction assembly 571 by the second pole piece traction component 761, here Pole piece is buffered and rectifies a deviation, and then arrives the second pole piece tension adjustment assembly 751, carries out the regulation of tension force, so that the second pole piece Keep a range of tension force, it is ensured that winding is smoothed out, the most again through the second pole piece traveling correction assembly 581, to second Pole piece wandering off and correct during advancing, then the second pole piece is admitted to the second pole piece and enters sheet folder 741.
Equally, the first pole piece starts to unreel from the first pole piece material volume 51, under the traction of the first pole piece traction component 76, and warp After crossing the correction of the first pole piece deviation correction assembly 77, to first pole piece caching correction assembly 57, here the first pole piece be buffered and Correction, then arrives the first pole piece tension adjustment assembly 75, carries out the regulation of tension force, so that the first pole piece keeps a range of Tension force, it is ensured that winding is smoothed out, the most again through the first pole piece traveling correction assembly 58, to the first pole piece during advancing Wander off and correct, then the first pole piece is admitted to the first pole piece and enters sheet folder 74.
Equally, the first barrier film from the first barrier film coiled strip 78 through the first diaphragm deviation rectifying assembly 781 and the first membrane tension group After part 79, being transported to the first pole piece and enter the outlet of sheet folder 74, here the first barrier film and the first pole piece are close together, and second Barrier film after the second diaphragm deviation rectifying assembly 731 and the second membrane tension assembly 732, is transported to from the second barrier film coiled strip 73 Two pole pieces enter the outlet of sheet folder 741, and here the second barrier film and the second pole piece are close together, and are then passed through pole piece pan feeding assembly After the convergence of 54, it is wound into battery core by square volume pin.
When an electric core winding is to close to when having finished up, and the second pole piece cutting assembly 721 is from the leading portion pole of the second pole piece Adhesive tape position between sheet and back segment pole piece cuts, and the first pole piece is cut off by the first pole piece cutting assembly 72, square volume Pin continues winding, until the leading portion pole piece of the second pole piece is rolled up along with the first barrier film and the second barrier film completely with cut-off pole piece In battery core, then, it is positioned at the barrier film cutting assembly 710 below pole piece pan feeding assembly 54 and two barrier films are cut off, winding electricity The stage of core has worked.
Then, the battery core of winding is sent into battery core rubberizing assembly 711 by rotary work station rotating disk, completes the rubberizing of battery core, rubberizing After completing, then sent into blanking assembly 712 by rotary work station rotating disk, and export from conveying assembly 713.
A kind of pole piece coiling method utilizing a kind of pole piece aforesaid pole piece coiling equipment of embodiment, including walking as follows Rapid:
Setting up level electronic cam curve, the servomotor 41 of described level electronic cam pack is according to described level electronic The distance that moves horizontally of described horizontal pole piece roller 49 is controlled by cam curve;
Wherein, in described level electronic cam curve:
Δl = ( L act + ΔL ) 2 - F 2 - L act 2 - F 2 ;
Wherein, LactRepresent that the real-time pole piece in the i-th curve point correspondence moment of described level electronic cam curve unreels length Degree, Δ L represents the step-length unreeled from the i-th curve point correspondence moment to the pole piece in i+1 curve point correspondence moment, and F represents Horizontal pole piece roller is to the vertical dimension of pole piece pan feeding assembly, and Δ l represents from the i-th curve point correspondence moment to i+1 curve The distance that horizontal pole piece roller 49 described in the point corresponding moment moves in the horizontal direction, owing to the time interval between curve point is also Knowing, therefore Δ l has reacted the horizontal movement speed of horizontal pole piece roller 49 equally, and same Δ L has also reacted the speed that pole piece unreels Degree.During setting up this level electronic cam curve, above-mentioned relation will be stored.
Therefore, according to this level electronic cam curve, servomotor 41 can preferably control horizontal pole piece roller 49 and compensate The speed that pole piece unreels, so that the speed of pole piece is maintained in certain fluctuation range.
Preferably, during described servomotor 41 carries out velocity compensation to horizontal pole piece roller 49, due to winding electricity Machine according to current time actually detected to pole piece unreel length and horizontal pole piece roller 49 moves horizontally distance, to described level pole The position of sheet roller compensates.Concrete compensation can be:Such as, in reality In the winding process of border, when detect horizontal pole piece roller 49 current to move horizontally distance, delta l' and corresponding level electronic cam bent The Δ l of line differs, then can compensate the distance that moves horizontally of horizontal pole piece roller 49;In like manner, when pole piece being detected Currently unreel length and the L in corresponding level electronic cam curveactDiffer, then can be to the level of horizontal pole piece roller 49 Displacement compensates, if comparing LactBig then increase horizontal pole piece roller 49 move horizontally distance, if comparing LactLittle, reduce water Mean pole sheet roller 49 move horizontally distance.
In order to reduce the fluctuation of pole piece linear velocity further, it is possible to use volume pin servomotor is bent according to volume pin electric cam Described square volume pin 56 is controlled by line;Wherein, described volume pin electronic cam curve is obtained by following algorithm:
If Lact-L'act> Δ L, then judgeWhether more than 0 and less than Vmax
If 0 < v < Vmax, then judge that the i-th curve point of described volume pin electronic cam curve is normal, and to described volume pin The next one of electronic cam curve, i.e. i+1 curve point calculate, until completing whole according to the algorithm of volume pin electric cam The foundation of individual volume pin electronic cam curve:
If i≤N, then y ( i ) = y ( i - 1 ) * i + ( D act - D 0 ) / ( i + 1 ) x ( i ) = x ( i - 1 ) * i + ( L act - L 0 ) / ( i + 1 ) z ( i ) = 1 ;
If i is > N, then y ( i ) = [ y ( i - 1 ) * ( N + 1 ) - y ( i - N - 1 ) + ( D act - D 0 ) ] / ( N + 1 ) x ( i ) = [ x ( i - 1 ) * ( N + 1 ) - x ( i - N - 1 ) + ( L act - L 0 ) ] / ( N + 1 ) z ( i ) = 1 ;
Wherein, y (i) and y (i-1) represents that described square volume pin is bent in the i-th of described volume pin electronic cam curve respectively Angle during line and the angle when the i-th-1 curve point, the overall sequence number representing curve point in bracket, DactAnd D0Respectively Represent that described square volume pin is at the real-time winding angle in the i-th curve correspondence moment of described volume pin electronic cam curve and square Volume pin initial angle, x (i) and x (i-1) represents the pole piece length in described volume pin electronic cam curve i-th curve point respectively With the length of the i-th-1 curve point, L0For when pole after described square volume pin is threaded a needle and when described square volume pin is in level The initial length of sheet, N is sliding average filtering factor, D'actRepresent the i-th curve point of described volume pin electronic cam curve The real-time winding angle in corresponding moment, L'actRepresent the i-th-1 curve point correspondence of described volume pin electronic cam curve The real-time pole piece in moment unreels length, VmaxIt is pole piece amplitude limit speed.
It should be noted that the curve point of the curve point of level electronic cam curve and volume pin electronic cam curve is one by one Corresponding, the number including curve point is identical.
After establishing volume pin electronic cam curve, volume pin can be entered by volume pin servomotor according to volume pin electronic cam curve Row controls, and then is controlled compensating to the linear velocity of pole piece.When described volume pin servomotor controller control resource not During foot (the calculating resource of such as servomotor is occupied too much by other unit, it is impossible to complete in time volume pin is controlled computing), can With z (i) zero setting that some curve point by described volume pin electronic cam curve are corresponding;Then according to following algorithm to volume pin and pole Sheet is controlled:
If during z (i)=0: y (i)=k*x (i)+s;
When z (i)=1: y (i)=a*x (i)3+b*x(i)2+cx(i)+d;
Wherein, k and s is the i-th-1 curve point, described volume pin electronic cam curve to be carried out first derivation obtain respectively Coefficient of first order and zero degree coefficient, a, b, c and d are to carry out described volume pin electronic cam curve the i-th-1 curve point respectively Three ordered coefficients, quadratic coefficients, coefficient of first order and the zero degree coefficient that three rank derivations obtain.So, when the inadequate resource of controller, The first power interpolation that operand is less can be used, when the resource abundance of controller, it is possible to use three times that operand is bigger Side's interpolation.
As Fig. 3 to Fig. 9 understands, when the width (referring to the length of EB) of square volume pin 56 is the biggest (and width is the biggest, its EB length The degree length than CB, AB, DE and EF would generally be the most more), therefore, the change of the winding radius of square volume pin is the biggest, from And cause the fluctuation of pole piece linear velocity the most violent.As a rule, volume pin servomotor is rolled up pin electronic cam curve The interval of sampled point is the most intensive (i.e. Δ L is the least), the volume pin electronic cam curve obtained and actual curve the most just closer to.But It is, when causing violent pole piece linear velocity fluctuation when the width of square volume pin 56 is bigger, because the restriction of motor actual performance (such as, at present seldom motor in 3ms from the direct raising speed of 100rpm to 12000rpm), even if increasing Δ L further, motor Acceleration also cannot catch up with the pole piece linear velocity of big ups and downs, it is impossible to obtains close to actual operation curve.
Therefore, when described square volume pin 56 width is less, bigger described Δ L can be used, so can obtain more The volume pin electronic cam curve of the nearly actual operation curve of adjunction proximity;And when the width of volume pin 56 square described in motor is bigger, Then can use less Δ L, then utilize the interpolation of above-mentioned algorithm further according to volume pin electronic cam curve, allow servomotor root The operation of maximum possible is made according to the performance of oneself.Such as, when square volume pin width less than 60mm is, Δ L=0.4mm, the side of working as When shape volume pin width is more than or equal to 60mm, Δ L=0.75mm.
And owing to the width of the square volume pin 56 required for the battery core of different size is different, if often changing the most square volume pin 56, the data i.e. inputting correspondence can be cumbersome, and therefore, the width of square volume pin 56 can be carried out by the way of self study Update, can be by the following algorithm described square volume pin width of calculating:
H = 2 ( L act 1 - L 0 ) 2 + 2 A ( L act 1 - L 0 ) ;
Wherein, H is the width of described square volume pin 56, L0For after described square volume pin 56 is threaded a needle and described square volume pin The initial length of 56 pole pieces when being in level (state as shown in Figure 3, but pole piece has put on square volume pin 56), Lact1For unreeling length when described square volume pin rotates the moment pole piece after 180 ° from described level, turn the most counterclockwise Dynamic.
The most first calculate and set up described level electronic cam curve, calculate described volume pin electronic cam curve the most again, this Sample is owing to, in horizontal pole piece roller 49 coupling to pole piece, the volume pin electronic cam curve therefore obtained is more nearly reality Border curve (compared with setting up level electronic cam curve with after first setting up volume pin electronic cam curve).
Above content is to combine concrete preferred implementation further description made for the present invention, it is impossible to assert Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, On the premise of present inventive concept, it is also possible to make some simple deduction or replace, all should be considered as belonging to the present invention by The scope of patent protection that the claims submitted to determine.

Claims (12)

1. a pole piece coiling equipment, unreels assembly and pole piece coiling assembly including pole piece, it is characterized in that, also include level electronic Cam pack, described level electronic cam pack include servomotor, shaft coupling, feed screw nut, screw mandrel, contiguous block, guide post, Guide post fixes seat, horizontal pole piece roller and pole piece pan feeding assembly, described pole piece unreel assembly include the first pole piece unreel assembly and Second pole piece unreels assembly, and the outfan of described servomotor is connected with described screw mandrel by described shaft coupling, described screw mandrel spiral shell Mother set is on described screw mandrel, and described contiguous block is fixed with described feed screw nut, and described contiguous block is solid with one end of described guide post Fixed, described guide post fixes seat through described guide post, and described horizontal pole piece roller rotates fixing with the other end of described guide post, Pole piece pan feeding assembly is for converging described first pole piece and unreel the first pole piece that assembly unreels and described second pole piece unreeling assembly Barrier film between the second pole piece and described first pole piece and the second pole piece that unreel, described pole piece pan feeding assembly includes first Pan feeding pole piece roller and the second pan feeding pole piece roller, described horizontal pole piece roller is at described first pan feeding pole piece roller and the second pan feeding pole piece roller Under, described servomotor is used for driving described horizontal pole piece roller to move in the horizontal direction, and described horizontal pole piece roller is used for para-position The compensation speed of the surface applying level of pole piece between assembly and described pole piece coiling assembly, described pole is unreeled in described pole piece The volume pin of sheet winding assembly is square volume pin.
2. pole piece coiling equipment as claimed in claim 1, is characterized in that, described level electronic cam pack also include slide rail and Roller fixture, described contiguous block is slidably connected with described slide rail, and described roller fixture includes that roller mount body, the first roller are fixed Part side and the second roller fixture side, the other end of described guide post fixes with described roller mount body, described level pole First end of sheet roller and the second end are rotationally connected with described first roller fixture side and the second roller fixture side respectively.
3. pole piece coiling equipment as claimed in claim 2, is characterized in that, described guide post includes the first guide post, second leads To bar and roller fixture, the first end of described first guide post is fixed with the first side of described contiguous block, described second guide post The second side of the first end and described contiguous block fix, the second end of described first guide post and the second end of the second guide post are equal Fix with described roller mount body.
4. pole piece coiling equipment as claimed in claim 1, is characterized in that, described first pole piece unreels assembly and includes the first pole piece Material volume and the first pole piece tension adjustment assembly, described second pole piece unreels assembly and includes the second pole piece material volume and the second pole piece tension force Adjusting part, described first pole piece unreels to described through described first pole piece tension adjustment assembly from described first pole piece material volume Pole piece pan feeding assembly, described second pole piece from described second pole piece material volume through described second pole piece tension adjustment assembly unreel to Described pole piece pan feeding assembly, described first pole piece tension adjustment assembly and the second pole piece tension adjustment assembly are respectively used to first Pole piece and the second pole piece provide the tension force of set point.
5. use a pole piece coiling method as claimed in claim 1, it is characterized in that, comprise the steps:
Set up level electronic cam curve, described servomotor according to described level electronic cam curve to described horizontal pole piece roller The distance that moves horizontally be controlled;
Wherein, in described level electronic cam curve:
Δ l = ( L a c t + Δ L ) 2 - F 2 - L a c t 2 - F 2 ;
Wherein, LactRepresent that the real-time pole piece in the i-th curve point correspondence moment of described level electronic cam curve unreels length, Δ L represents the step-length unreeled from the i-th curve point correspondence moment to the pole piece in i+1 curve point correspondence moment, and F represents level Pole piece roller is to the vertical dimension of pole piece pan feeding assembly, and Δ l represents from the i-th curve point correspondence moment to i+1 curve point pair Should the distance moved in the horizontal direction of horizontal pole piece roller described in the moment.
6. pole piece coiling method as claimed in claim 5, is characterized in that, described servomotor is actually detected according to current time To pole piece unreel length and horizontal pole piece roller moves horizontally distance, the position of described horizontal pole piece roller is compensated.
7. pole piece coiling method as claimed in claim 5, is characterized in that, if described square volume pin width is relatively big, uses less Δ L, if described square volume pin width is less, use bigger described Δ L.
8. pole piece coiling method as claimed in claim 7, is characterized in that, calculates described square volume pin width by following algorithm Degree:
Wherein, H is described square volume pin width, L0For after described square volume pin is threaded a needle and described square volume pin is in horizontal The initial length of pole piece, L during stateact1For unreeling when described square volume pin rotates the moment pole piece after 180 ° from described level Length.
9. pole piece coiling method as claimed in claim 5, is characterized in that, utilizes volume pin servomotor according to volume pin electric cam Described square volume pin is controlled by curve;Wherein, described volume pin electronic cam curve is obtained by following algorithm:
If i≤N, then
If i is > N, then
Wherein, y (i) and y (i-1) represents that described square volume pin is when the i-th curve of described volume pin electronic cam curve respectively Angle and angle when the i-th-1 curve point, DactAnd D0Represent that described square volume pin is at described volume pin electric cam respectively Real-time winding angle and square volume pin initial angle, x (i) and the x (i-1) in the i-th curve correspondence moment of curve represent respectively Pole piece is at the length of described volume pin electronic cam curve i-th curve point and the length of the i-th-1 curve point, L0For as described side The initial length of pole piece when shape is rolled up after pin is threaded a needle and described square volume pin is in level, N is sliding average filtering factor.
10. pole piece coiling method as claimed in claim 9, is characterized in that, if Lact-L'act> Δ L, then judgeWhether more than 0 and less than Vmax;If 0 < v < Vmax, then the i-th of described volume pin electronic cam curve is judged Curve point is normal, and to i+1 the curve point of described volume pin electronic cam curve according to the algorithm of described volume pin electric cam Calculate, wherein, D'actRepresent the real-time winding angle in moment corresponding to the i-th curve point of described volume pin electronic cam curve Degree, L'actRepresent that the real-time pole piece in the i-th-1 curve point correspondence moment of described volume pin electronic cam curve unreels length, VmaxIt is pole piece amplitude limit speed.
11. pole piece coiling methods as claimed in claim 9, is characterized in that, when the control of the controller of described volume pin servomotor During inadequate resource processed, by z (i) zero setting corresponding for some curve point of described volume pin electronic cam curve;Described volume pin servo electricity Volume pin is controlled by machine according to described volume pin electronic cam curve and following algorithm:
If during z (i)=0: y (i)=k*x (i)+s;
When z (i)=1: y (i)=a*x (i)3+b*x(i)2+cx(i)+d;
Wherein, k and s is the i-th-1 curve point described volume pin electronic cam curve carried out first derivation obtains one respectively Ordered coefficients and zero degree coefficient, a, b, c and d are that the i-th-1 curve point, described volume pin electronic cam curve is carried out three rank respectively Three ordered coefficients, quadratic coefficients, coefficient of first order and the zero degree coefficient that derivation obtains.
12. pole piece coiling methods as claimed in claim 9, is characterized in that, first calculate described level electronic cam curve, then Calculate described volume pin electronic cam curve.
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CN104466228B (en) * 2014-12-31 2017-02-22 深圳市赢合科技股份有限公司 Pole piece winding method
CN107315389B (en) * 2017-05-23 2021-06-08 泉州市汉威机械制造有限公司 Design method of cubic deformation cam curve
CN109301147B (en) * 2017-07-24 2020-11-06 宁德时代新能源科技股份有限公司 Tab dislocation control method and winding device
CN109301352B (en) * 2017-07-24 2020-06-19 宁德时代新能源科技股份有限公司 Tab dislocation control method and winding device
CN107799808B (en) * 2017-09-21 2024-07-26 无锡先导智能装备股份有限公司 Inserting sheet adjusting mechanism, adjusting method and winding machine
CN109560330B (en) * 2017-09-27 2020-11-13 东莞市雅康精密机械有限公司 Winding apparatus
CN110436238B (en) * 2019-08-05 2024-09-27 无锡先导智能装备股份有限公司 Automatic roll changing mechanism and automatic roll changing device
CN111416142B (en) * 2020-03-31 2021-03-30 广东利元亨智能装备股份有限公司 Correction method and device for battery cell, correction control equipment and correction system
CN113299968A (en) * 2021-05-24 2021-08-24 湖北佑德惠新能源科技有限公司 Intelligent processing device for lithium battery roll core
CN114171773B (en) * 2021-11-30 2022-08-16 广东利元亨智能装备股份有限公司 Active cache method and device, storage medium and continuous winding machine
CN114275574B (en) * 2022-01-27 2024-06-04 三一技术装备有限公司 Unreeling device and reeling machine
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