WO2023078217A1 - 一种追切卷绕方法及多工位卷绕装置 - Google Patents

一种追切卷绕方法及多工位卷绕装置 Download PDF

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Publication number
WO2023078217A1
WO2023078217A1 PCT/CN2022/128732 CN2022128732W WO2023078217A1 WO 2023078217 A1 WO2023078217 A1 WO 2023078217A1 CN 2022128732 W CN2022128732 W CN 2022128732W WO 2023078217 A1 WO2023078217 A1 WO 2023078217A1
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WIPO (PCT)
Prior art keywords
winding
station
chasing
cutting
winding mechanism
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PCT/CN2022/128732
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English (en)
French (fr)
Inventor
黄振奎
丘荣意
潘梦川
许天锋
周明浪
Original Assignee
广东利元亨智能装备股份有限公司
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Publication of WO2023078217A1 publication Critical patent/WO2023078217A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to the field of electric core production, in particular to a chase-cut winding method and a multi-station winding device.
  • the winding process can be used to make the battery core.
  • the basic process is to convey the pole piece to the winding needle.
  • the winding method uses a winding machine, and the winding machine generally includes a plurality of stations, and each station is responsible for a different action. Since the winding machine needs to slow down when cutting off the pole pieces, the process of cell preparation is incoherent and time-consuming. This winding method has become a bottleneck for improving the efficiency of cell preparation in the lithium battery industry.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a chase winding method and a multi-station winding device.
  • the chase winding method can improve the continuity of the cell winding process.
  • the chase winding method uses a winding line, a first conveying line, a second conveying line and at least three winding mechanisms moving along the winding line, the winding
  • the lines are connected end to end, and the winding line includes a chasing station and a winding station, and the winding station is located downstream of the chasing station;
  • the first conveying line conveys the first material tape to the chasing and cutting station, and the second conveying line conveys the second material tape to the winding station;
  • the winding mechanism at the winding station acquires the second material tape and performs a winding action, and the winding mechanism at the chasing cutting station moves to fit the first material tape Prepared position;
  • the winding mechanism at the winding station completes the winding action
  • the winding mechanism at the chasing cutting station performs a chasing cutting action
  • the step of performing the chasing action includes:
  • the winding mechanism at the ready position follows the movement of the first material tape
  • the winding mechanism When the winding mechanism performing chasing action is synchronized with the first material tape, the winding mechanism cuts off the first material tape, and the winding mechanism acquires the first material behind the cutting position. the head end of the belt.
  • the winding mechanism can chase and cut the first material tape, so there is no need to suspend the conveyance of the first material tape and the operation of the winding mechanism when cutting, and the chasing and cutting coil
  • the winding method can improve the continuity of the cell winding process, thereby helping to improve the efficiency of the winding process.
  • the winding line further includes a gluing station and an unloading station, and the winding mechanism located at the chasing and cutting station can pass through the winding station, the The gluing station and the blanking station return to the chasing and cutting station, and the chasing and winding method also includes:
  • the winding mechanism moves from the winding station to the gluing station, it performs a finishing action on the first material tape and the second material tape;
  • the unloading action is performed when the winding mechanism moves to the unloading station.
  • the winding line further includes a blanking station, and the winding mechanism located at the chasing cutting station can pass through the winding station and the blanking station in sequence
  • the chasing and winding method also includes:
  • the winding mechanism After the winding mechanism completes the winding action, it performs the finishing action and the glue application action;
  • the unloading action is performed when the winding mechanism is transferred to the unloading station.
  • the winding mechanism at the chasing cutting station performs a pre-rolling action when moving to the winding station.
  • the winding mechanism includes a winding needle
  • the winding needle includes a first needle body and a second needle body
  • the chase winding method further includes:
  • the winding needle moves axially to avoid the first material tape.
  • the step of moving the winding mechanism following the first material tape along the chasing cutting route includes:
  • the winding needle performs a first movement in the axial direction so that the first material tape passes between the first needle body and the second needle body;
  • the winding mechanism performs a second movement along the conveying direction of the first material tape so that the speed of the winding mechanism is the same as the conveying speed of the first material tape;
  • first movement and the second movement are performed simultaneously or the first movement is performed prior to the second movement.
  • the winding mechanism further includes a rotary cutter, the rotary cutter is located between the first needle body and the second needle body, the rotary cutter includes a blade and Pressing part, the step of cutting off the first material tape by the winding mechanism includes:
  • the rotary cutter rotates to make the pressing part close to the second needle body, and the pressing part and the second needle body press the first material tape;
  • the rotary cutter rotates to make the blade close to the first needle body, and the first needle body and the blade cut off the first material tape.
  • the chase winding method further includes:
  • first offset refers to an offset of the second tape relative to the winding mechanism
  • the movement of the winding mechanism is controlled to counteract the first offset.
  • the first conveying line includes two diaphragm conveying units and one first pole piece conveying unit
  • the chase winding method further includes:
  • the diaphragm conveying unit provides a diaphragm, and the first pole piece conveying unit provides a first pole piece;
  • the second offset refers to the offset of the diaphragm relative to the first pole piece
  • the step of sending the first strip to the chasing cutting station includes:
  • a gap is left between the two sections of the first tape when pasting the protective glue, and the cutting position in the step of chasing cutting is consistent with the position of the gap.
  • the multi-station winding device includes a winding line, a first conveying line, a second conveying line and at least three winding mechanisms, the winding lines are connected end to end, and the winding lines include chasing and cutting station and a winding station, the winding station is located downstream of the chasing and cutting station, the first conveying line is used to convey the first strip to the chasing and cutting station, and the second conveying A line is used to convey the second strip to the winding station, and the winding mechanism is movable along the winding line.
  • the multi-station winding device can use the tracking and winding method provided by the present invention, so there is no need to suspend the conveying and winding of the first material tape during cutting. With the operation of the winding mechanism, the multi-station winding device can improve the continuity of the cell winding process, thereby helping to improve the efficiency of the winding process.
  • the winding line further includes a gluing station and an unloading station, and the winding mechanism located at the chasing and cutting station can pass through the winding station, the The gluing station and the blanking station return to the chasing and cutting station, a finishing mechanism for finishing is installed between the winding station and the gluing station, and the gluing station is installed There is a gluing mechanism for gluing.
  • the winding line further includes a blanking station, and the winding mechanism located at the chasing cutting station can pass through the winding station and the blanking station in sequence
  • the winding station is equipped with a finishing and gluing mechanism for finishing and gluing.
  • the first conveying line includes two diaphragm conveying units and a first pole piece conveying unit, the diaphragm conveying unit is used to provide the diaphragm, and the first pole piece conveying unit is used to provide For the first pole piece, the first conveying line can attach the two diaphragms to both sides of the first pole piece to form the first strip.
  • the first conveying line includes a pre-cutting station for cutting the first strip, and the pre-cutting station is used for A gap is formed at the cut position of the tape and a protective glue is applied.
  • the winding mechanism includes a rolling needle and a rotary cutter
  • the rolling needle includes a first needle body and a second needle body
  • the first needle body and the second needle body are used for For clamping the first material tape
  • the rotary cutter is located between the first needle body and the second needle body
  • the rotary cutter includes a blade and a pressing portion
  • the blade and The first needle body is adapted
  • the pressing part is adapted to the second needle body
  • the rotary cutter can rotate so that the blade cuts off the first strip
  • the rotating The cutter can be rotated so that the pressing part presses the first material strip.
  • the winding mechanism can expand and contract along the axis direction for deviation correction.
  • Fig. 1 is a schematic diagram of an embodiment of a multi-station winding device of the present invention
  • Fig. 2 is a schematic diagram of another embodiment of the multi-station winding device of the present invention.
  • Fig. 3 is a schematic diagram of the winding mechanism of the present invention when performing the tracking and winding method
  • Fig. 4 is a schematic diagram of the winding mechanism of the present invention when performing the tracking and winding method
  • Fig. 5 is a schematic diagram of the winding mechanism of the present invention when performing the tracking and winding method
  • Fig. 6 is a schematic diagram of the winding mechanism of the present invention when performing the tracking and winding method
  • Fig. 7 is a schematic diagram of the winding mechanism of the present invention when performing the tracking and winding method
  • Fig. 8 is a schematic diagram of the winding mechanism of the present invention when performing the tracking and winding method
  • Fig. 9 is a flow chart of the action of the winding mechanism of the present invention.
  • Fig. 10 is a schematic structural view of the rotary cutter of the present invention.
  • Fig. 11 is a schematic diagram of yet another embodiment of the multi-station winding device of the present invention.
  • orientation descriptions such as up, down, front, back, left, right, etc. indicated orientation or position relationship are based on the orientation or position relationship shown in the drawings, It is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
  • a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or apparatuses.
  • the tracking winding method uses a winding line, a first conveying line, a second conveying line and at least three winding mechanisms 110 moving along the winding line, and the winding lines are connected end to end , the winding line includes a chasing station 310 and a winding station 320, and the winding station 320 is located downstream of the chasing station 310;
  • the first conveying line conveys the first strip 210 to the chasing and cutting station 310, and the second conveying line conveys the second strip 220 to the coiling station 320;
  • the winding mechanism 110 located at the winding station 320 acquires the second material tape 220 and performs a winding action, and the winding mechanism 110 located at the chasing cutting station 310 moves to the preparation position 311 adapted to the first material tape 210;
  • the winding mechanism 110 at the winding station 320 completes the winding action
  • the winding mechanism 110 at the chasing and cutting station 310 performs the chasing and cutting action
  • the step of performing the chasing action includes:
  • the winding mechanism 110 located at the preparatory position 311 moves along the chasing and cutting route following the first material tape 210, and the chasing and cutting route is consistent with the conveying route of the first material tape 210;
  • the winding mechanism 110 When the winding mechanism 110 performing the chasing action is synchronized with the first tape 210 , the winding mechanism 110 cuts off the first tape 210 , and the winding mechanism 110 obtains the head end of the first tape 210 behind the cutting position.
  • the winding mechanism 110 can track and cut the first material tape 210, so there is no need to suspend the conveyance of the first material belt 210 and the operation of the winding mechanism 110 when cutting. It can improve the continuity of the cell winding process, thereby helping to improve the efficiency of the winding process.
  • the chasing station 310 has a chasing route, one end of the chasing route is a preparatory position 311, the other end of the chasing route is a chasing position 312, and the winding mechanism 110 is at the chasing position 312. Cut off the first material tape 210, the front and rear of the cutting position of the first material tape 210 are determined according to the conveying direction of the first material tape 210, and the conveying direction is towards the front.
  • the first material The belt 210 is cut into two sections, wherein the front section is wound up by the winding mechanism 110 currently performing the winding action, and the end of the other section of the first material belt 210 is the head end, and the other section of the first material belt 210 is chased and cut by After the moving winding mechanism 110 is acquired, it moves to the winding station 320 for winding.
  • the winding mechanism 110 of the chasing action moves to the winding station 320
  • the winding mechanism 110 from the upstream of the chasing station 310 moves to the winding station 320.
  • the chasing cutting station 310 moves to complete the connection between different winding mechanisms 110 .
  • the second material tape 220 is sent in from the tangent point position of the first material tape 210 winding, and as the winding progresses, the first material tape 210 will wrap the second material tape 220 Clamping, thereby realizing the acquisition of the second material strip 220 .
  • the second conveying line cuts off the second material tape 220 .
  • the cutting method of the second conveying line to the second material strip 220 is not limited, for example, a chasing method similar to that of the winding mechanism 110 may be used, or a second conveying line with a buffer station may be used,
  • the cut second material tape 220 is sent to the buffering station for buffering, and when the second material tape 220 needs to stop for cutting, the second material tape 220 is transported from the buffering station to the winding station.
  • the cell includes a cathode sheet, an anode sheet, and a diaphragm for separating the cathode sheet and the anode sheet.
  • the cathode sheet, the anode sheet, and the two diaphragms need to be laminated before being sent to the winding mechanism 110.
  • the sheet and anode sheets are sent to the film laminating position by their respective sheet feeding mechanisms, and the sheet feeding mechanism will correct the deviation according to the offset when feeding the cathode sheet and when feeding the anode sheet.
  • the sheet feeding mechanism Due to the long conveying route of the cathode sheet and the anode sheet during the feeding process, the sheet feeding mechanism is far away from the film laminating position and the winding position, there is a delay in the deviation correction and the response is not in place, and the deviation correction of the two sheet feeding mechanisms is still possible. Interference with each other, so the existing winding method has the problem of poor alignment of the cathode sheet, the anode sheet, and the edges on both sides of the separator, resulting in poor winding of the completed cell.
  • first the first material tape 210 is sent to the winding mechanism 110, and then the second material tape 220 is sent to the winding mechanism 110.
  • the first material tape 210 Since the first material tape 210 is already in the state of being wound at this time, the stability and controllability are better, and the first material tape 210 can be controlled according to the offset of the second material tape 220 to perform the deviation correction action, so it is sent into the second material tape 220.
  • the offset of the second material tape 220 is easy to adjust and correct, and it is easy to improve the quality of battery core winding.
  • the first material strip 210 includes the first pole piece 212
  • the second material strip 220 includes the second pole piece
  • one of the first pole piece 212 and the second pole piece is an anode piece
  • the other is an anode piece. is the cathode sheet.
  • the chase winding method further includes:
  • first offset refers to the offset of the second tape 220 relative to the winding mechanism 110
  • the movement of the winding mechanism 110 is controlled to counteract the first offset.
  • the first offset can be obtained by means of components such as CCD or sensors.
  • the deviation correction position coincides with the winding position, and the winding mechanism 110 clamps the first material tape 210 to perform deviation correction according to the offset of the second material tape 220, so that the first material tape 210 is adapted to the incoming position of the second material tape 220, so as to ensure the alignment of the edges on both sides of the second material tape 210 and the first material tape 220, so it can solve the problems of deviation correction lag and insufficient deviation correction response, and improve the quality of the battery cell.
  • the first conveying line includes two diaphragm conveying units and a first pole piece conveying unit
  • the step of conveying the first material belt 210 to the chasing cutting station includes:
  • the diaphragm delivery unit provides a diaphragm 211, and the first pole piece delivery unit provides a first pole piece 212;
  • the second offset refers to the offset of the diaphragm 211 relative to the first pole piece 212;
  • the first strip 210 is sent to the chasing cutting station.
  • a pole piece is bonded to a diaphragm 211, and the thickness of the material strip obtained after the lamination is relatively thin, and the ability to resist deformation is weak; in some current schemes, the pole piece needs to be Cutting is carried out by the sheet feeding mechanism, and then sent between the diaphragms, the thickness of the electrode sheet is thinner after sheet feeding and cutting, and the ability to resist deformation is weak.
  • the head and tail of the pole piece are prone to offset, resulting in poor alignment between the pole piece and the diaphragm.
  • the edge of the pole piece is prone to uneven force and wrinkling during the transportation process, which affects the quality of the cell winding .
  • the thickness of the first strip 210 and the ability to resist deformation are improved by bonding the two diaphragms 211 to the first pole piece 212, so that it is not easy to wrinkle during transportation, and at the same time, the winding mechanism 110 can track The first strip 210 is cut, so there is no need to suspend the conveyance of the first strip 210 and the operation of the winding mechanism 110 when cutting. efficiency of the winding process. Since the second material tape 220 is fed in during winding, the conveying distance is relatively short, and the risk of wrinkling during conveying is relatively low.
  • the beneficial effect of the present invention is also that the present invention cancels the film-combining step in the prior art, so that the diaphragm 211 does not participate in the film-combining, and shortens the length of the diaphragm 211 at the head and tail; meanwhile, it also cancels a set of existing winding equipment
  • the film feeding mechanism, the first material belt 210 is loaded through the acquisition and traction of the winding mechanism 110, which ensures the position accuracy of the first material belt 210;
  • the material tape 220 is wound, and the first material tape 210 is bonded first and then cut off, which can eliminate the unbonded first pole piece 212 in the prior art, which is prone to offset at the head and tail of the pole piece after the piece is fed and cut.
  • the problem of poor alignment between the first pole piece 212 and the diaphragm 211 can improve the alignment of the first pole piece 212 and the diaphragm 211 .
  • the manufacturing process of the battery cell also includes the closing action, the glue application action and the unloading action.
  • the closing action refers to pressing the end of the battery core to prevent the rolled battery core from being scattered, and at the same time the winding mechanism 110 continues to rotate for winding.
  • the glue sticking action refers to putting glue on the end of the finished battery cell to prevent the rolled battery core from falling apart
  • the unloading action refers to removing the battery core from the winding mechanism 110 .
  • the action of finishing the cell should be earlier than the action of cutting off the first material tape 210 by the next winding mechanism 110, that is to say, when the current winding mechanism 110 performs the winding action, the next winding mechanism 110 starts
  • the current winding mechanism 110 carries out the closing action and presses the end section of the battery cell before the chasing action of the next winding mechanism 110 enters the step of cutting the first material tape 210 .
  • the winding action, finishing action, gluing action and unloading action can be carried out at the same station or at different stations.
  • the winding line also includes a gluing station 330 and an unloading station 340, and the winding mechanism 110 located at the chasing and cutting station 310 can pass through the winding station 320, the gluing station 330 and the lowering station in sequence.
  • the material station 340 returns to the chasing and cutting station 310, and the chasing and winding method also includes:
  • the unloading action is performed when the winding mechanism 110 moves to the unloading station 340 .
  • the winding mechanism 110 switches between different stations, the winding mechanism 110 does not perform other actions except for moving.
  • the chase-cut winding method can effectively shorten the time consumption of the cell manufacturing process.
  • the winding line also includes a blanking station 340, and the winding mechanism 110 located at the chasing and cutting station 310 can pass through the winding station 320 and the blanking station 340 in sequence and return to the chasing and cutting station. 310.
  • the chase-cut winding method also includes:
  • winding mechanism 110 After the winding mechanism 110 completes the winding action, it performs the finishing action and glue application action;
  • the unloading action is performed when the winding mechanism 110 moves to the unloading station 340 .
  • the time for the winding mechanism 110 to move from the winding station 320 to the gluing station 330 can be saved, thereby shortening the production time of the cell. time-consuming process.
  • the winding wire can have various route layouts.
  • the winding mechanism 110 located at the chasing cutting station 310 performs a pre-rolling action when moving to the winding station 320 .
  • the winding mechanism 110 will wind several turns of the first material tape 210 first, so as to further shorten the time consumption of the cell manufacturing process.
  • the unloading station 340 includes a buffer area, and the winding mechanism 110 that has completed the unloading action is buffered in the buffer area.
  • the winding mechanism 110 in the buffer zone moves to the chasing cutting station 310 .
  • the buffer area is suitable for embodiments where the number of winding mechanisms 110 is greater than the number of each functional station in the winding device. According to the number of winding mechanisms 110 used in the chase winding method, one or more can wait in the buffer area.
  • the winding mechanism 110, each winding mechanism 110 leaves the buffer zone according to the set order. Designing the buffer zone can make the chase winding method suitable for applications with more winding mechanisms 110 .
  • the order of setting is not necessarily consistent with the order in which the winding mechanism 110 enters the buffer area.
  • the batteries on the winding mechanism 110 of the unloading station 340 after the batteries on the winding mechanism 110 of the unloading station 340 are removed, they can directly move to the preparation position of the chasing cutting station 310 .
  • the winding mechanism 110 includes a winding needle, and the winding needle includes a first needle body 111 and a second needle body 112, and the chase winding method further includes:
  • the winding needle moves away from the first material tape 210 to avoid the first material tape 210 .
  • the chasing route is a section of the route where the movement of the winding mechanism 110 overlaps with the conveying route of the first material belt 210.
  • the preparatory position 311 is the starting point of the chasing route. position, can avoid interfering with the winding mechanism 110 of the original chasing and cutting station 310 and move to the winding station 320 for the winding of the first material tape 210 and the sheet feeding work of the second material tape 220, so that the winding mechanism 110 moves to the
  • the movement of the preparation position can be performed in parallel with the process of winding the first material tape 210 by the previous winding mechanism 110 , so that the time consumption of the cell manufacturing process can be further shortened.
  • the first needle body 111 and the second needle body 112 are turned outward, the first needle body 111 and the second needle body 112 are folded, the first needle body 111 and the second needle body 112 are retracted along the axial direction of the rolling needle, and so on.
  • the step that the winding mechanism 110 moves following the first material tape 210 includes:
  • the winding needle carries out the first movement to the direction close to the first material tape 210 so that the first material tape 210 passes between the first needle body 111 and the second needle body 112;
  • the winding mechanism 110 performs a second movement along the conveying direction of the first material tape 210 so that the speed of the winding mechanism 110 is the same as the conveying speed of the first material tape 210;
  • first movement and the second movement are performed simultaneously or the first movement is performed prior to the second movement.
  • the first movement can be to stretch out, and the first movement makes the winding needle that avoids the first material strip 210 approach the first material strip 210 to reach the pre-clamping state that can clamp the first material strip 210, and the second movement makes the winding
  • the speed of the mechanism 110 catches up with the speed of the first material tape 210, and the winding mechanism 110 clamps the first material tape 210, so that the cutting positions of the winding mechanism 110 and the first material tape 210 remain relatively stationary.
  • Simultaneous execution of the first movement and the second movement can further increase the speed of the chasing cutting, which helps to improve the efficiency of the winding process.
  • the winding mechanism 110 can start to correct the deviation to prepare to obtain the second material tape 220 . That is to say, the deviation correcting action and the pre-rolling action of the winding mechanism 110 can be performed in parallel.
  • the winding mechanism 110 further includes a rotary cutter, the rotary cutter is located between the first needle body 111 and the second needle body 112, the rotary cutter includes a blade portion 113 and a pressing portion 114, and the winding mechanism 110 This step of cutting off the first strip 210 includes:
  • the rotary cutter rotates so that the pressing part 114 is close to the second needle body 112, and the pressing part 114 and the second needle body 112 press the first strip 210;
  • the rotary cutter rotates so that the blade portion 113 is close to the first needle body 111 , and the first needle body 111 and the blade portion 113 cut off the first material tape 210 .
  • the first needle body 111 includes a fixed cutting edge
  • the second needle body 112 includes a pressing block.
  • the pressing part 114 and the pressing block press the first strip 210 to limit the first strip 210. position to avoid movement of the first material strip 210 during cutting, and then the blade portion 113 and the fixed cutting edge work together to cut off the first material strip 210 .
  • the volume of the winding mechanism 110 can be effectively reduced, which helps to make the layout of the winding wire more compact.
  • the flow channel for blowing or sucking dust increases the cross-sectional area of the flow channel, and the dust removal effect is better than that of the traditional linear cutter.
  • the pressing part 114 and/or the pressing block are elastic to avoid rigid contact, thereby reducing damage to the first material strip 210 during pressing.
  • the pressing part 114 and/or the pressing block are deformed along with the rotation of the rotary cutter, so as to avoid hindering the movement of the blade part 113 .
  • the rotary cutter integrates pressing and cutting, ensuring the chronological sequence of the two actions.
  • the step of sending the first strip 210 to the trimming station includes:
  • a gap is left between the two sections of the first material tape 210 when pasting the protective glue, and the cutting position in the step of chasing cutting is consistent with the position of the gap.
  • the present invention cuts off the first material belt 210 in advance by adding a pre-cut link in the process of conveying the first material belt 210.
  • the winding mechanism 110 cuts off, it only needs to cut off the protective glue from the gap position, so the winding mechanism 110 will not cut off the protective glue.
  • Cutting into the diaphragm 211 or the first pole piece 212 prevents chips from being generated when the diaphragm 211 or the first pole piece 212 is cut for the second time.
  • the pre-cutting link is cut first and then the protective glue is applied, so the chips generated during cutting will stay on the first conveying line, and the burrs generated will be stuck by the protective glue, which will not easily affect the subsequent winding.
  • the second material tape 220 when the second conveying line transports the second material tape 220 , the second material tape 220 may also be pasted with protective glue, and then the second material tape 220 is cut off after pasting.
  • the multi-station winding device includes a winding line, a first conveying line, a second conveying line and at least three winding mechanisms 110, the winding lines are connected end to end, and the winding line includes a chasing and cutting station 310 And the winding station 320, the winding station 320 is located at the downstream of the chasing and cutting station 310, the first conveying line is used to transport the first strip 210 to the chasing and cutting station, and the second conveying line is used to convey to the winding station The second material tape 220 is delivered, and the winding mechanism 110 can move along the winding line.
  • the multi-station winding device provided by the present invention can be used to implement the tracking winding method provided by the present invention, so there is no need to suspend the conveying of the first material strip and the operation of the winding mechanism during cutting, and the multi-station winding device can Improve the continuity of the cell winding process, thereby helping to improve the efficiency of the winding process.
  • the winding line also includes a blanking station 340, and the winding mechanism 110 located at the chasing and cutting station 310 can pass through the winding station 320 and the blanking station 340 in sequence to return to the chasing station.
  • the cutting station 310 and the winding station 320 are equipped with a finishing and gluing mechanism 140 for finishing and gluing.
  • the winding line also includes a gluing station 330 and a blanking station 340, and the winding mechanism 110 located at the chasing and cutting station 310 can pass through the winding station 320, the gluing station and the gluing station in sequence.
  • Position 330 and blanking station 340 return to chasing and cutting station 310, and a finishing mechanism 120 for finishing is installed between winding station 320 and gluing station 330, and gluing station 330 is equipped with a sticker for gluing.
  • Glue mechanism 130 is provided to a sticker for gluing.
  • the first conveying line includes two diaphragm conveying units and a first pole piece conveying unit, the diaphragm conveying unit is used to provide the diaphragm 211, the first pole piece conveying unit is used to provide the first pole piece 212, the second A conveying line can attach two diaphragms 211 to both sides of the first pole piece 212 to form the first strip 210 .
  • the first conveying line may include a bonding station 360 and a pre-cutting station 370, the bonding station 360 completes the bonding of the diaphragm 211 and the first pole piece 212, and the pre-cutting station 370 completes the pre-cutting of the first strip 210 And paste protective glue.
  • the winding mechanism 110 includes a winding needle and a rotary cutter
  • the winding needle includes a first needle body 111 and a second needle body 112
  • the rotating cutter is located between the first needle body 111 and the second needle body 112
  • the first material strip 210 can pass through the rolling needle between the first needle body 111 and the second needle body 112
  • the rotary cutter includes a blade portion 113 and a pressing portion 114
  • the blade portion 113 is suitable for the first needle body 111 Matching
  • the pressing part 114 is adapted to the second needle body 112
  • the rotary cutter can rotate so that the blade part 113 cuts off the first strip 210
  • the rotary cutter can rotate so that the pressing part 114 presses the first strip 210.
  • the winding mechanism 110 can expand and contract along the axial direction for deviation correction.
  • the rolling needle is installed on the guide rail, and the rolling needle extends or retracts along the guide rail, and the rotary cutter is built in the rolling needle to follow the rolling needle to extend or retract.
  • the winding mechanism 110 can also use an external cutter, and the external cutter and the winding needle are extended or retracted respectively.
  • the multi-station winding device also includes corresponding functional modules and beneficial effects for executing the chase winding method provided by any embodiment of the present invention.
  • functional modules and beneficial effects for executing the chase winding method provided by any embodiment of the present invention.
  • the multi-station winding device includes a winding line, a first conveying line, a second conveying line and four winding mechanisms 110, the winding line is connected end to end, and the winding line includes chasing and cutting Station 310, winding station 320, gluing station 330 and unloading station 340.
  • a finishing mechanism 120 for finishing is installed between the winding station 320 and the gluing station 330 , and the gluing station 330 is installed with a gluing mechanism 130 for gluing.
  • the first conveying line is used to convey the first strip 210 to the chasing and cutting station 310, and the second conveying line is used to convey the second strip 220 to the winding station 320.
  • the first conveying line includes the first material preparation workers arranged in sequence. position, bonding station 360 and pre-cutting station 370, the first material preparation station includes two diaphragm conveying units and one first pole piece conveying unit.
  • the second conveying line includes a second material preparation station and a cutting station arranged in sequence, and the second material preparation station includes a second pole piece conveying unit.
  • the winding mechanism 110 includes a winding needle and a rotary cutter, the winding needle includes a first needle body 111 and a second needle body 112, the rotary cutter is located between the first needle body 111 and the second needle body 112, and the first material tape 210
  • the rolling needle can pass between the first needle body 111 and the second needle body 112
  • the rotary cutter includes a blade portion 113 and a pressing portion 114 .
  • the winding mechanism 110 can be retracted to avoid the first material tape 210 .
  • the winding mechanism 110 located at the chasing and cutting station 310 can return to the chasing and cutting station 310 through the winding station 320 , the gluing station 330 and the unloading station 340 in sequence.
  • the first conveying line conveys the first material tape 210 to the chasing and cutting station 310, and the second conveying line conveys the second material tape 220 to the winding station 320;
  • the winding mechanism 110 located at the winding station 320 obtains the second material tape 220 for winding
  • the winding mechanism 110 located at the chasing cutting station 310 moves to a preparation position suitable for the first strip 210;
  • the winding mechanism 110 located at the gluing station 330 performs the gluing action
  • the winding mechanism 110 located at the blanking station 340 performs the blanking action
  • the winding mechanism 110 at the winding station 320 completes the winding action
  • the winding mechanism 110 at the chasing and cutting station 310 performs the chasing and cutting action
  • the winding mechanism 110 located at the following cutting station 310 performs a pre-rolling action when moving to the winding station 320;
  • the winding mechanism 110 located at the winding station 320 performs a finishing action when moving to the gluing station 330;
  • the winding needle retracts axially to avoid the first material tape 210 .
  • the step of transporting the first material belt 210 to the receiving station 310 by the first conveying line also includes:
  • the diaphragm delivery unit provides a diaphragm 211, and the first pole piece delivery unit provides a first pole piece 212;
  • the second offset refers to the offset of the diaphragm 211 relative to the first pole piece 212;
  • a gap is left between the two sections of the first material tape 210 when pasting the protective glue, and the cutting position in the step of chasing cutting is consistent with the position of the gap.
  • Chase-cut winding methods also include:
  • first offset refers to the offset of the second tape 220 relative to the winding mechanism 110
  • the second conveying line cuts off the second material belt 220 .
  • the step of chasing also includes:
  • the winding needle protrudes in the axial direction so that the first material tape 210 passes between the first needle body 111 and the second needle body 112;
  • the winding mechanism 110 performs a second movement along the conveying direction of the first material tape 210 so that the speed of the winding mechanism 110 is the same as the conveying speed of the first material tape 210;
  • the winding mechanism 110 When the winding mechanism 110 is synchronized with the first material tape 210 , the winding mechanism 110 cuts off the first material tape 210 , and the winding mechanism 110 acquires the first material tape 210 behind the cutting position.
  • first movement and the second movement are carried out simultaneously.
  • embodiment 2 integrates the winding action, finishing action and glue application into the winding station 320, and the winding line also includes a blanking station 340, located at The winding mechanism 110 of the chasing and cutting station 310 can return to the chasing and cutting station 310 through the winding station 320 and the unloading station 340 in sequence, and the winding station 320 is equipped with a finishing and gluing mechanism for finishing and gluing 140.
  • Embodiment 2 includes three winding mechanisms 110, and in Embodiment 2, the rotating cutters of the winding mechanisms 110 are replaced with external cutters. When the winding mechanism 110 is stretched out and retracted, the external cutter and the winding needle expand and contract separately, and the external cutter can retract first after cutting the first material strip 210 .
  • embodiment 3 uses an external cutter and adjusts the route layout of the winding wire.
  • the external cutter and the winding needle expand and contract separately.
  • references to the terms “one embodiment,” “some embodiments,” “exemplary embodiments,” “example,” “specific examples,” or “some examples” are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention.
  • schematic representations of the above terms do not necessarily refer to the same embodiment or example.
  • the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

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Abstract

本发明提出一种追切卷绕方法及多工位卷绕装置，追切卷绕方法包括：第一输送线向追切工位输送第一料带，第二输送线向卷绕工位输送第二料带；位于卷绕工位的卷绕机构获取第二料带进行卷绕动作，位于追切工位的卷绕机构移动至与第一料带相适配的预备位置；当位于卷绕工位的卷绕机构完成卷绕动作时，位于追切工位的卷绕机构进行追切动作；当卷绕线上的各个卷绕机构完成所在工位的动作后，卷绕机构向下游的工位移动。卷绕机构能够追切第一料带，因此在切断时无需暂停第一料带的输送以及卷绕机构的运行，追切卷绕方法能够提高电芯卷绕流程的连贯性，从而有助于提高卷绕工艺的效率。

Description

一种追切卷绕方法及多工位卷绕装置 技术领域
本发明涉及电芯制作领域，特别是一种追切卷绕方法及多工位卷绕装置。
背景技术
电芯制作可采用卷绕工艺，在目前的卷绕方法中，基本流程是向卷针输送极片，当卷针获取到足够长度的极片后，停止极片输送和卷针卷绕，切断极片，极片切断后继续进行卷针卷绕、收尾、贴胶、下料等动作。卷绕方法使用卷绕机，卷绕机一般包括多个工位，每个工位负责不同的动作。由于切断极片时卷绕机需要减速，导致电芯制备的流程不连贯、耗时较长，这种卷绕方法已成为锂电行业电芯制备效率提升的瓶颈。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种追切卷绕方法及多工位卷绕装置，追切卷绕方法能够提高电芯卷绕流程的连贯性。
根据本发明提供的追切卷绕方法，追切卷绕方法使用卷绕线、第一输送线、第二输送线和至少三个沿所述卷绕线移动的卷绕机构，所述卷绕线首尾相连，所述卷绕线包括追切工位和卷绕工位，所述卷绕工位位于所述追切工位的下游；
追切卷绕方法包括：
第一输送线向所述追切工位输送第一料带，第二输送线向所述卷绕工位输送第二料带；
位于所述卷绕工位的所述卷绕机构获取所述第二料带并进行卷绕动作，位于所述追切工位的所述卷绕机构移动至与所述第一料带相适配的预备位置；
当位于所述卷绕工位的所述卷绕机构完成卷绕动作时，位于所述追切工位的所述卷绕机构进行追切动作；
当卷绕线上的各个所述卷绕机构完成所在工位的动作后，所述卷绕机构向下游的工位移动；
其中，进行追切动作这一步骤包括：
位于所述预备位置的所述卷绕机构追随所述第一料带移动；
当进行追切动作的所述卷绕机构与所述第一料带同步时，所述卷绕机构切断所述第一料带，所述卷绕机构获取位于切断位置后方的所述第一料带的首端。
根据本发明提供的追切卷绕方法，至少具有如下技术效果：卷绕机构能够追切第一料带，因此在切断时无需暂停第一料带的输送以及卷绕机构的运行，追切卷绕方法能够提高电芯卷绕流程的连贯性，从而有助于提高卷绕工艺的效率。
根据本发明的一些实施例，所述卷绕线还包括贴胶工位和下料工位，位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、所述贴胶工位和所述下料工位回到所述追切工位，追切卷绕方法还包括：
所述卷绕机构从所述卷绕工位向所述贴胶工位移动时对所述第一料带和所述第二料带进 行收尾动作；
所述卷绕机构移动至所述贴胶工位时进行贴胶动作；
所述卷绕机构移动至所述下料工位时进行下料动作。
根据本发明的一些实施例，所述卷绕线还包括下料工位，位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、和所述下料工位回到所述追切工位，追切卷绕方法还包括：
所述卷绕机构完成卷绕动作后进行收尾动作及进行贴胶动作；
所述卷绕机构移送至所述下料工位时进行下料动作。
根据本发明的一些实施例，位于所述追切工位的所述卷绕机构向所述卷绕工位移动时进行预卷动作。
根据本发明的一些实施例，所述卷绕机构包括卷针，所述卷针包括第一针体和第二针体，追切卷绕方法还包括：
当所述卷绕机构向所述预备位置移动时，所述卷针沿轴向运动以避让所述第一料带。
根据本发明的一些实施例，所述卷绕机构沿追切路线追随所述第一料带移动这一步骤包括：
所述卷针沿轴向进行第一运动以使所述第一料带从所述第一针体和所述第二针体之间穿过；
所述卷绕机构沿所述第一料带的输送方向进行第二运动以使所述卷绕机构的速度与所述第一料带的输送速度相同；
其中，所述第一运动和所述第二运动同时进行或所述第一运动先于所述第二运动进行。
根据本发明的一些实施例，所述卷绕机构还包括旋转切刀，所述旋转切刀位于所述第一针体和所述第二针体之间，所述旋转切刀包括刃部和压紧部，所述卷绕机构切断所述第一料带这一步骤包括：
所述旋转切刀旋转以使所述压紧部靠近所述第二针体，所述压紧部和所述第二针体压紧所述第一料带；
所述旋转切刀旋转以使所述刃部靠近所述第一针体，所述第一针体和所述刃部切断所述第一料带。
根据本发明的一些实施例，追切卷绕方法还包括：
获取第一偏移量，所述第一偏移量指所述第二料带相对所述卷绕机构的偏移量；
控制所述卷绕机构运动以抵消所述第一偏移量。
根据本发明的一些实施例，所述第一输送线包括两个隔膜输送单元和一个第一极片输送单元，追切卷绕方法还包括：
所述隔膜输送单元提供隔膜，所述第一极片输送单元提供第一极片；
获取第二偏移量，所述第二偏移量指所述隔膜相对所述第一极片的偏移量；
控制所述隔膜运动以抵消所述第二偏移量；
将两个所述隔膜分别贴合在所述第一极片的两侧以形成所述第一料带；
将所述第一料带送往所述追切工位。
根据本发明的一些实施例，将所述第一料带送往所述追切工位这一步骤包括：
切断所述第一料带；
在切断位置粘贴保护胶以重新连接所述第一料带；
将粘贴好的所述第一料带送往所述追切工位；
其中，粘贴保护胶时在第一料带的两段之间留出间隙，进行追切这一步骤中切断的位置与所述间隙的位置一致。
根据本发明提供的多工位卷绕装置，包括卷绕线、第一输送线、第二输送线和至少三个卷绕机构，所述卷绕线首尾相连，所述卷绕线包括追切工位和卷绕工位，所述卷绕工位位于所述追切工位的下游，所述第一输送线用于向所述追切工位输送第一料带，所述第二输送线用于向所述卷绕工位输送第二料带，所述卷绕机构能够沿所述卷绕线移动。
根据本发明提供的多工位卷绕装置，至少具有如下技术效果：多工位卷绕装置能够使用本发明提供的追切卷绕方法，因此在切断时无需暂停第一料带的输送以及卷绕机构的运行，多工位卷绕装置能够提高电芯卷绕流程的连贯性，从而有助于提高卷绕工艺的效率。
根据本发明的一些实施例，所述卷绕线还包括贴胶工位和下料工位，位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、所述贴胶工位和所述下料工位回到所述追切工位，所述卷绕工位和所述贴胶工位之间安装有用于收尾的收尾机构，所述贴胶工位安装有用于贴胶的贴胶机构。
根据本发明的一些实施例，所述卷绕线还包括下料工位，位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、和所述下料工位回到所述追切工位，所述卷绕工位安装有用于收尾和贴胶的收尾贴胶机构。
根据本发明的一些实施例，所述第一输送线包括两个隔膜输送单元和一个第一极片输送单元，所述隔膜输送单元用于提供隔膜，所述第一极片输送单元用于提供第一极片，所述第一输送线能够将两个所述隔膜分别贴合在所述第一极片的两侧以形成所述第一料带。
根据本发明的一些实施例，所述第一输送线包括预切工位，所述预切工位用于切断所述第一料带，所述预切工位用于在所述第一料带的切断位置形成间隙并粘贴保护胶。
根据本发明的一些实施例，所述卷绕机构包括卷针和旋转切刀，所述卷针包括第一针体和第二针体，所述第一针体和所述第二针体用于夹住所述第一料带，所述旋转切刀位于所述第一针体和所述第二针体之间，所述旋转切刀包括刃部和压紧部，所述刃部与所述第一针体相适配，所述压紧部与所述第二针体相适配，所述旋转切刀能够旋转以使所述刃部切断所述第一料带，所述旋转切刀能够旋转以使所述压紧部压紧所述第一料带。
根据本发明的一些实施例，所述卷绕机构能够沿轴线方向伸缩以进行纠偏。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明的多工位卷绕装置的一种实施例的示意图；
图2是本发明的多工位卷绕装置的另一种实施例的示意图；
图3是本发明的卷绕机构执行追切卷绕方法时的示意图；
图4是本发明的卷绕机构执行追切卷绕方法时的示意图；
图5是本发明的卷绕机构执行追切卷绕方法时的示意图；
图6是本发明的卷绕机构执行追切卷绕方法时的示意图；
图7是本发明的卷绕机构执行追切卷绕方法时的示意图；
图8是本发明的卷绕机构执行追切卷绕方法时的示意图；
图9是本发明的卷绕机构的动作流程图；
图10是本发明的旋转切刀的结构示意图；
图11是本发明的多工位卷绕装置的又另一种实施例的示意图。
附图标记：
卷绕机构110、第一针体111、第二针体112、刃部113、压紧部114、收尾机构120、贴胶机构130、收尾贴胶机构140、
第一料带210、隔膜211、第一极片212、第二料带220、
追切工位310、预备位置311、追切位置312、卷绕工位320、贴胶工位330、下料工位340、贴合工位360、预切工位370。
具体实施方式
下面详细描述本发明的实施例，实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或工位关系为基于附图所示的方位或工位关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，若干的含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
本发明的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
根据本发明提供的追切卷绕方法，追切卷绕方法使用卷绕线、第一输送线、第二输送线和至少三个沿卷绕线移动的卷绕机构110，卷绕线首尾相连，卷绕线包括追切工位310和卷绕工位320，卷绕工位320位于追切工位310的下游；
追切卷绕方法包括：
第一输送线向追切工位310输送第一料带210，第二输送线向卷绕工位320输送第二料 带220；
位于卷绕工位320的卷绕机构110获取第二料带220并进行卷绕动作，位于追切工位310的卷绕机构110移动至与第一料带210相适配的预备位置311；
当位于卷绕工位320的卷绕机构110完成卷绕动作时，位于追切工位310的卷绕机构110进行追切动作；
当卷绕线上的各个卷绕机构110完成所在工位的动作后，卷绕机构110向下游的工位移动；
其中，进行追切动作这一步骤包括：
位于预备位置311的卷绕机构110沿追切路线追随第一料带210移动，追切路线与第一料带210的输送路线一致；
当进行追切动作的卷绕机构110与第一料带210同步时，卷绕机构110切断第一料带210，卷绕机构110获取位于切断位置后方的第一料带210的首端。
根据本发明提供的追切卷绕方法，卷绕机构110能够追切第一料带210，因此在切断时无需暂停第一料带210的输送以及卷绕机构110的运行，追切卷绕方法能够提高电芯卷绕流程的连贯性，从而有助于提高卷绕工艺的效率。
可以理解的是，参照图6，追切工位310具有追切路线，追切路线的一端为预备位置311，追切路线的另一端为追切位置312，卷绕机构110在追切位置312切断第一料带210，第一料带210的切断位置的前方和后方根据第一料带210的输送方向确定，输送方向朝向前方，当一个卷绕机构110进行追切动作时，第一料带210被裁为两段，其中前方的一段由当前进行卷绕动作的卷绕机构110收卷，另外一段第一料带210的末端即为首端，另外一段第一料带210由进行追切动作的卷绕机构110获取后移动到卷绕工位320进行卷绕，进行追切动作的卷绕机构110向卷绕工位320移动时，来自追切工位310上游的卷绕机构110向追切工位310移动，从而完成不同卷绕机构110之间的衔接。
在卷绕时，参照图1和图2，第二料带220从第一料带210卷绕的切点位置送入，随着卷绕的进行，第一料带210将第二料带220夹住，从而实现第二料带220的获取。
当送入卷绕机构110的第二料带220达到预设长度后，第二输送线切断第二料带220。第二输送线对第二料带220的切断不限于采用何种方式，例如可以采用与卷绕机构110的追切动作类似的追切方式，或者可以采用具有缓存工位的第二输送线，切断的第二料带220送入缓存工位缓存，当第二料带220需要停止进行切断时，由缓存工位向卷绕工位输送第二料带220。
电芯包括阴极片、阳极片以及用于隔开阴极片和阳极片的隔膜，现有卷绕方法中阴极片、阳极片以及两个隔膜需要先进行合膜再送往卷绕机构110，阴极片、阳极片在切断后由各自 的送片机构送入合膜位置，送片机构会根据送入阴极片时和送入阳极片时的偏移进行纠偏。由于阴极片和阳极片送入过程中输送的路线较长，送片机构距离合膜位置以及卷绕位置较远，纠偏存在滞后以及响应不到位等情况，且两个送片机构的纠偏还可能相互干扰，因此现有卷绕方法存在阴极片、阳极片以及隔膜两侧边缘的对齐度差的问题，导致卷绕完成的电芯不良。
而在本发明的追切卷绕方法中，先将第一料带210送往卷绕机构110，再将第二料带220送往卷绕机构110，在送入第二料带220时，由于第一料带210此时已处于被卷绕的状态，稳定性和可控性较好，可以根据第二料带220的偏移量控制第一料带210进行纠偏动作，因此送入第二料带220时的偏移容易调整和纠正，易于提高电芯卷绕的质量。
可以理解的是，此时第一料带210包括第一极片212，第二料带220包括第二极片，第一极片212和第二极片的其中一个是阳极片，另外一个则是阴极片。
具体来说，根据本发明的一些实施例，追切卷绕方法还包括：
获取第一偏移量，第一偏移量指第二料带220相对卷绕机构110的偏移量；
控制卷绕机构110运动以抵消第一偏移量。
实施本发明时可以借助CCD或者传感器等元器件获取第一偏移量。
由于此时直接由卷绕机构110进行纠偏，纠偏位置和卷绕位置重合，卷绕机构110夹持着第一料带210根据第二料带220的偏移量进行纠偏，使得第一料带210适配第二料带220来料位置，从而确保第二料带210、第一料带220的两侧边缘对齐度，因此能够解决纠偏滞后以及纠偏响应不到位的问题，提高电芯质量。
根据本发明的一些实施例，第一输送线包括两个隔膜输送单元和一个第一极片输送单元，向追切工位输送第一料带210这一步骤包括：
隔膜输送单元提供隔膜211，第一极片输送单元提供第一极片212；
获取第二偏移量，第二偏移量指隔膜211相对第一极片212的偏移量；
控制隔膜211运动以抵消第二偏移量；
将两个隔膜211分别贴合在第一极片212的两侧以形成第一料带210；
将第一料带210送往追切工位。
可以理解的是，在目前的一些方案中一个极片与一个隔膜211相贴合，贴合完成后得到的料带厚度较薄，抵抗变形的能力较弱；在目前的一些方案中极片需通过送片机构进行裁切，再送入隔膜之间，极片在送片裁切后厚度较薄，抵抗变形的能力较弱。容易出现极片头部、尾部偏移，导致极片与隔膜的对齐度差的问题，另外在输送过程中极片边缘还容易出现受力不均打皱的问题，影响电芯卷绕的质量。
本发明的一些实施例通过将两个隔膜211与第一极片212贴合，提高了第一料带210的厚度以及抵抗变形的能力，输送过程中不易打皱，同时卷绕机构110能够追切第一料带210， 因此在切断时无需暂停第一料带210的输送以及卷绕机构110的运行，追切卷绕方法能够提高电芯卷绕流程的连贯性，从而有助于提高卷绕工艺的效率。由于第二料带220是在卷绕时再送入，输送距离较短，输送过程中打皱的风险偏低。
本发明的有益效果还在于，本发明取消了现有技术中的合膜步骤，使得隔膜211不参与合膜，缩短头尾的隔膜211长度；同时还取消了现有卷绕设备中的一套送片机构，第一料带210通过卷绕机构110的获取和牵引实现上料，保证了第一料带210上料的位置精准度；利用预先贴合好的第一料带210与第二料带220进行卷绕，第一料带210先贴合后切断，可消除现有技术中未贴合的第一极片212在送片裁切后容易出现极片头部、尾部偏移，导致第一极片212与隔膜211的对齐度差的问题，可提高第一极片212与隔膜211的对齐度。
电芯的制作过程还包括收尾动作、贴胶动作和下料动作，其中收尾动作是指压住电芯的末段以避免卷好的电芯散开，同时卷绕机构110继续转动以收卷电芯的末段，贴胶动作是指在收尾完成的电芯的末端贴收尾胶以避免卷好的电芯散开，下料动作是指从卷绕机构110上取下电芯。其中，对电芯收尾这一动作应早于下一个卷绕机构110切断第一料带210这一动作，也就是说，在当前的卷绕机构110进行卷绕动作时下一个卷绕机构110开始追切动作，当前的卷绕机构110进行收尾动作压住电芯的末段后下一个卷绕机构110的追切动作才进入切断第一料带210这一步骤。根据具体的设计，卷绕动作、收尾动作、贴胶动作和下料动作可以在同一工位上进行，也可以在不同的工位上进行。
在一些实施例中，卷绕线还包括贴胶工位330和下料工位340，位于追切工位310的卷绕机构110能够依次经过卷绕工位320、贴胶工位330和下料工位340回到追切工位310，追切卷绕方法还包括：
卷绕机构110从卷绕工位320向贴胶工位330移动时对第一料带210和第二料带220进行收尾动作；
卷绕机构110移动至贴胶工位330时进行贴胶动作；
卷绕机构110移动至下料工位340时进行下料动作。
目前的卷绕方法中，不同的动作之间为串联关系，当卷绕机构110在不同工位之间切换时，卷绕机构110除了移动之外不进行其它的动作。本发明通过使收尾动作与卷绕机构110从卷绕工位320向贴胶工位330的移动过程并行，追切卷绕方法能够有效缩短电芯制作过程的耗时。
在另外一些实施例中，卷绕线还包括下料工位340，位于追切工位310的卷绕机构110能够依次经过卷绕工位320、和下料工位340回到追切工位310，追切卷绕方法还包括：
卷绕机构110完成卷绕动作后进行收尾动作及进行贴胶动作；
卷绕机构110移动至下料工位340时进行下料动作。
通过将卷绕动作、收尾动作和贴胶动作集成到卷绕工位320，能够省去卷绕机构110从卷绕工位320向贴胶工位330移动的时间，从而也能够缩短电芯制作过程的耗时。
参照图1、图2和图11，卷绕线可以有多样的路线布局。
在一些实施例中，位于追切工位310的卷绕机构110向卷绕工位320移动时进行预卷动作。在预卷时，卷绕机构110会先卷绕若干圈第一料带210，从而能够进一步缩短电芯制作过程的耗时。
根据本发明的一些实施例，下料工位340包括缓存区，完成下料动作的卷绕机构110缓存在缓存区中，当位于追切工位310的卷绕机构110向卷绕工位320移动时，缓存区中的卷绕机构110向追切工位310移动。
缓存区适用于卷绕机构110的数量多于卷绕设备中各功能工位的数量的实施例，根据追切卷绕方法使用的卷绕机构110的数量，缓存区中可以等待一个或多个卷绕机构110，各个卷绕机构110依据设定的顺序离开缓存区。设计缓存区能够使追切卷绕方法适用于具有更多卷绕机构110的场合。
当然，设定的顺序并不一定要和卷绕机构110进入缓存区的顺序一致，例如缓存区内可以有多个缓存位置，不同的卷绕机构110在下料结束后停留于各自设定的缓存位置，在需要时，根据缓存位置选择送入追切工位310的卷绕机构110。
根据本发明的一些实施例，下料工位340的卷绕机构110上的电芯被移除后，可直接移动至追切工位310的预备位置。
根据本发明的一些实施例，卷绕机构110包括卷针，卷针包括第一针体111和第二针体112，追切卷绕方法还包括：
当卷绕机构110向预备位置移动时，卷针向远离第一料带210的方向运动以避让第一料带210。
追切路线是卷绕机构110的移动与第一料带210的输送路线重叠的一段路线，预备位置311是追切路线的起点，卷绕机构110从下料工位340移动同时避让后到达预备位置，能够避免干扰原追切工位310的卷绕机构110移动到卷绕工位320对第一料带210的卷绕及第二料带220的送片工作，从而使卷绕机构110向预备位置的移动可以和上一个卷绕机构110卷绕第一料带210的过程并行进行，从而能够进一步缩短电芯制作过程的耗时。
这里的向远离第一料带210的方向运动，也就是第一料带210的避让运动可以有多种方式，例如第一针体111和第二针体112向外翻开、第一针体111和第二针体112折叠、第一针体111和第二针体112沿卷针的轴向回缩收回等。
在一些实施例中，卷绕机构110追随第一料带210移动这一步骤包括：
卷针向靠近第一料带210的方向进行第一运动以使第一料带210从第一针体111和第二 针体112之间穿过；
卷绕机构110沿第一料带210的输送方向进行第二运动以使卷绕机构110的速度与第一料带210的输送速度相同；
其中，第一运动和第二运动同时进行或第一运动先于第二运动进行。
第一运动可以是伸出，第一运动使原本避让第一料带210的卷针靠近第一料带210，到达能够夹紧第一料带210的预备夹紧状态，第二运动使卷绕机构110的速度追上第一料带210的速度，卷绕机构110夹紧第一料带210，使卷绕机构110和第一料带210的切断位置保持相对静止。
第一运动和第二运动同时进行能够进一步提高追切的速度，有助于提高卷绕工艺的效率。同时，在卷绕机构110夹紧第一料带210后，卷绕机构110即可以开始进行纠偏动作以准备获取第二料带220。也就是卷绕机构110的纠偏动作和预卷动作可以并行进行。
在一些实施例中，卷绕机构110还包括旋转切刀，旋转切刀位于第一针体111和第二针体112之间，旋转切刀包括刃部113和压紧部114，卷绕机构110切断第一料带210这一步骤包括：
旋转切刀旋转以使压紧部114靠近第二针体112，压紧部114和第二针体112压紧第一料带210；
旋转切刀旋转以使刃部113靠近第一针体111，第一针体111和刃部113切断第一料带210。
参照图10，第一针体111上包括定切刃，第二针体112上包括压紧块，首先压紧部114与压紧块压紧第一料带210，限位第一料带210的位置，避免切断时第一料带210活动，随后刃部113与定切刃共同作用切断第一料带210。通过将旋转切刀置于卷针的内部，能够有效地减小卷绕机构110的体积，有助于使卷绕线的布局更加紧凑，同时旋转切刀的中间具有空腔，空腔能够作为吹尘或吸尘的流道，从而增大流道的截面积，除尘效果优于传统的直线式切刀。压紧部114和/或压紧块具有弹性，避免刚性接触，从而减小压紧时对第一料带210的损伤。同时随着旋转切刀的旋转压紧部114和/或压紧块发生变形，避免阻碍刃部113的运动。旋转切刀整合了压紧和切断，确保两个动作在时间上的先后顺序。
在一些实施例中，将第一料带210送往追切工位这一步骤包括：
切断第一料带210；
在切断位置粘贴保护胶以重新连接第一料带210；
将粘贴好的第一料带210送往追切工位；
其中，粘贴保护胶时在第一料带210的两段之间留出间隙，进行追切这一步骤中切断的位置与间隙的位置一致。
在目前的一些卷绕方法中，为了避免卷绕机构110切断第一料带210时产生的切屑和毛刺刺破隔膜211或第一极片212，以及避免切屑污染卷绕机构110，会在切断位置先粘贴保护胶再进行切断，于是产生的切屑和毛刺会被保护胶粘住，在后续的卷绕时不会刺破隔膜211或第一极片212。但是这样的方式依旧会产生切屑和毛刺，仍存在一定的风险。
本发明通过在输送第一料带210的过程中增设预切环节提前切断第一料带210，卷绕机构110切断时只需要从间隙位置再切断保护胶，因此卷绕机构110切断时不会切入隔膜211或第一极片212，避免了隔膜211或第一极片212在第二次切断时产生切屑。此外，预切环节先切断再贴保护胶，因此切断时产生的切屑会留在第一输送线，产生的毛刺会被保护胶粘住，不易影响后续的卷绕。
在一些实施例中，第二输送线输送第二料带220时也可以为第二料带220粘贴保护胶，粘贴后再切断第二料带220。
根据本发明提供的多工位卷绕装置，包括卷绕线、第一输送线、第二输送线和至少三个卷绕机构110，卷绕线首尾相连，卷绕线包括追切工位310和卷绕工位320，卷绕工位320位于追切工位310的下游，第一输送线用于向追切工位输送第一料带210，第二输送线用于向卷绕工位输送第二料带220，卷绕机构110能够沿卷绕线移动。
本发明提供的多工位卷绕装置可用于执行本发明所提供的追切卷绕方法，因此在切断时无需暂停第一料带的输送以及卷绕机构的运行，多工位卷绕装置能够提高电芯卷绕流程的连贯性，从而有助于提高卷绕工艺的效率。
在一些实施例中，参照图2，卷绕线还包括下料工位340，位于追切工位310的卷绕机构110能够依次经过卷绕工位320、和下料工位340回到追切工位310，卷绕工位320安装有用于收尾和贴胶的收尾贴胶机构140。
在一些实施例中，参照图1，卷绕线还包括贴胶工位330和下料工位340，位于追切工位310的卷绕机构110能够依次经过卷绕工位320、贴胶工位330和下料工位340回到追切工位310，卷绕工位320和贴胶工位330之间安装有用于收尾的收尾机构120，贴胶工位330安装有用于贴胶的贴胶机构130。
在一些实施例中，第一输送线包括两个隔膜输送单元和一个第一极片输送单元，隔膜输送单元用于提供隔膜211，第一极片输送单元用于提供第一极片212，第一输送线能够将两个隔膜211分别贴合在第一极片212的两侧以形成第一料带210。第一输送线可以包括贴合工位360和预切工位370，贴合工位360完成隔膜211和第一极片212的贴合，预切工位370完成第一料带210的预切以及贴保护胶。
在一些实施例中，卷绕机构110包括卷针和旋转切刀，卷针包括第一针体111和第二针体112，旋转切刀位于第一针体111和第二针体112之间，第一料带210能够从第一针体111 和第二针体112之间穿过卷针，旋转切刀包括刃部113和压紧部114，刃部113与第一针体111相适配，压紧部114与第二针体112相适配，旋转切刀能够旋转以使刃部113切断第一料带210，旋转切刀能够旋转以使压紧部114压紧第一料带210。
在一些实施例中，卷绕机构110能够沿轴线方向伸缩以进行纠偏。例如，卷针安装在导轨上，卷针沿导轨伸出或缩回，旋转切刀内置在卷针内跟随卷针伸出或缩回。当然，卷绕机构110也可以使用外置切刀，外置切刀与卷针分别伸出或缩回。
多工位卷绕装置还包括执行本发明任意实施例所提供的追切卷绕方法相应的功能模块和有益效果。未在上述实施例中详尽描述的技术细节，可参见本申请任意实施例所提供的追切卷绕方法。
下面参考图1至图11以三个具体的实施例详细描述根据本发明提供的追切卷绕方法及多工位卷绕装置。需要解释的是，在图3至图8中，虚线绘制的卷绕机构110与实线绘制的卷绕机构110表示两者位于不同的平面，从而实现卷绕机构110在空间上避让第一料带210。值得理解的是，下述描述仅是示例性说明，而不是对发明的具体限制。
实施例1：
参照图1以及图10，多工位卷绕装置包括卷绕线、第一输送线、第二输送线和四个卷绕机构110，卷绕线首尾相连，卷绕线包括依次设置的追切工位310、卷绕工位320、贴胶工位330和下料工位340。卷绕工位320和贴胶工位330之间安装有用于收尾的收尾机构120，贴胶工位330安装有用于贴胶的贴胶机构130。
第一输送线用于向追切工位310输送第一料带210，第二输送线用于向卷绕工位320输送第二料带220，第一输送线包括依次设置的第一备料工位、贴合工位360和预切工位370，第一备料工位包括两个隔膜输送单元和一个第一极片输送单元。第二输送线包括依次设置的第二备料工位和切断工位，第二备料工位包括第二极片输送单元。
卷绕机构110包括卷针和旋转切刀，卷针包括第一针体111和第二针体112，旋转切刀位于第一针体111和第二针体112之间，第一料带210能够从第一针体111和第二针体112之间穿过卷针，旋转切刀包括刃部113和压紧部114。卷绕机构110能够伸缩以避让第一料带210。位于追切工位310的卷绕机构110能够依次经过卷绕工位320、贴胶工位330和下料工位340回到追切工位310。
参照图3至图9，按照以下的追切卷绕方法使用多工位卷绕装置：
第一输送线向追切工位310输送第一料带210，第二输送线向卷绕工位320输送第二料带220；
位于卷绕工位320的卷绕机构110获取第二料带220进行卷绕动作；
位于追切工位310的卷绕机构110移动至与第一料带210相适配的预备位置；
位于贴胶工位330的卷绕机构110进行贴胶动作；
位于下料工位340的卷绕机构110进行下料动作；
当位于卷绕工位320的卷绕机构110完成卷绕动作时，位于追切工位310的卷绕机构110进行追切动作；
当卷绕线上的各个卷绕机构110完成所在工位的动作后，卷绕机构110向下游的工位移动；
位于追切工位310的卷绕机构110向卷绕工位320移动时进行预卷动作；
位于卷绕工位320的卷绕机构110向贴胶工位330移动时进行收尾动作；
位于下料工位340的卷绕机构110向追切工位310移动时，卷针沿轴向缩回以避让第一料带210。
第一输送线向获料工位310输送第一料带210这一步骤还包括：
隔膜输送单元提供隔膜211，第一极片输送单元提供第一极片212；
获取第二偏移量，第二偏移量指隔膜211相对第一极片212的偏移量；
控制隔膜211运动以抵消第二偏移量；
将两个隔膜211分别贴合在第一极片212的两侧以形成第一料带210；
切断第一料带210；
在切断位置粘贴保护胶以重新连接第一料带210；
将粘贴好的第一料带210送往追切工位；
其中，粘贴保护胶时在第一料带210的两段之间留出间隙，进行追切这一步骤中切断的位置与间隙的位置一致。
追切卷绕方法还包括：
获取第一偏移量，第一偏移量指第二料带220相对卷绕机构110的偏移量；
控制卷绕机构110运动以抵消第一偏移量；
当输送给卷绕机构110的第二料带220的长度到达预设值时，第二输送线切断第二料带220。
进行追切这一步骤还包括：
卷针向沿轴向伸出以使第一料带210从第一针体111和第二针体112之间穿过；
卷绕机构110沿第一料带210的输送方向进行第二运动以使卷绕机构110的速度与第一料带210的输送速度相同；
当卷绕机构110与第一料带210同步时，卷绕机构110切断第一料带210，卷绕机构110获取位于切断位置后方的第一料带210。
其中，第一运动和第二运动同时进行。
实施例2：
参照图2，实施例2与实施例1的区别在于，实施例2将卷绕动作、收尾动作和贴胶动作整合到卷绕工位320中，卷绕线还包括下料工位340，位于追切工位310的卷绕机构110能够依次经过卷绕工位320、和下料工位340回到追切工位310，卷绕工位320安装有用于收尾和贴胶的收尾贴胶机构140。实施例2包括三个卷绕机构110，并且实施例2将卷绕机构110的旋转切刀替换为外置切刀。在卷绕机构110进行伸出以及缩回时，外置切刀和卷针分开伸缩，外置切刀完成第一料带210的切断后可以先行缩回。
实施例3：
参照图11，实施例3与实施例1的区别在于，实施例3使用了外置切刀，并且调整了卷绕线的路线布局。在卷绕机构110进行伸出以及缩回时，外置切刀和卷针分开伸缩。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (17)

  1. 一种追切卷绕方法，其特征在于：
    追切卷绕方法使用卷绕线、第一输送线、第二输送线和至少三个沿所述卷绕线移动的卷绕机构，所述卷绕线首尾相连，所述卷绕线包括追切工位和卷绕工位，所述卷绕工位位于所述追切工位的下游；
    追切卷绕方法包括：
    第一输送线向所述追切工位输送第一料带，第二输送线向所述卷绕工位输送第二料带；
    位于所述卷绕工位的所述卷绕机构获取所述第二料带并进行卷绕动作，位于所述追切工位的所述卷绕机构移动至与所述第一料带相适配的预备位置；
    当位于所述卷绕工位的所述卷绕机构完成卷绕动作时，位于所述追切工位的所述卷绕机构进行追切动作；
    当所述卷绕线上的各个所述卷绕机构完成所在工位的动作后，所述卷绕机构向下游的工位移动；
    其中，进行追切动作这一步骤包括：
    位于所述预备位置的所述卷绕机构沿追切路线追随所述第一料带移动，所述追切路线与所述第一料带的输送路线一致；
    当进行追切动作的所述卷绕机构与所述第一料带同步时，所述卷绕机构切断所述第一料带，所述卷绕机构获取位于切断位置后方的所述第一料带的首端。
  2. 根据权利要求1所述的追切卷绕方法，其特征在于，所述卷绕线还包括贴胶工位和下料工位，位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、所述贴胶工位和所述下料工位回到所述追切工位，追切卷绕方法还包括：
    所述卷绕机构从所述卷绕工位向所述贴胶工位移动时对所述第一料带和所述第二料带进行收尾动作；
    所述卷绕机构移动至所述贴胶工位时进行贴胶动作；
    所述卷绕机构移动至所述下料工位时进行下料动作。
  3. 根据权利要求1所述的追切卷绕方法，其特征在于，所述卷绕线还包括下料工位，位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、和所述下料工位回到所述追切工位，追切卷绕方法还包括：
    所述卷绕机构完成卷绕动作后进行收尾动作及进行贴胶动作；
    所述卷绕机构移动至所述下料工位时进行下料动作。
  4. 根据权利要求1所述的追切卷绕方法，其特征在于，位于所述追切工位的所述卷绕机构向所述卷绕工位移动时进行预卷动作。
  5. 根据权利要求1所述的追切卷绕方法，其特征在于，所述卷绕机构包括卷针，所述卷针包括第一针体和第二针体，追切卷绕方法还包括：
    当所述卷绕机构向所述预备位置移动时，所述卷针沿轴向运动以避让所述第一料带。
  6. 根据权利要求5所述的追切卷绕方法，其特征在于，所述卷绕机构沿追切路线追随所述第一料带移动这一步骤包括：
    所述卷针沿轴向进行第一运动以使所述第一料带从所述第一针体和所述第二针体之间穿 过；
    所述卷绕机构沿所述第一料带的输送方向进行第二运动以使所述卷绕机构的速度与所述第一料带的输送速度相同；
    其中，所述第一运动和所述第二运动同时进行或所述第一运动先于所述第二运动进行。
  7. 根据权利要求5所述的追切卷绕方法，其特征在于：所述卷绕机构还包括旋转切刀，所述旋转切刀位于所述第一针体和所述第二针体之间，所述旋转切刀包括刃部和压紧部，所述卷绕机构切断所述第一料带这一步骤包括：
    所述旋转切刀旋转以使所述压紧部靠近所述第二针体，所述压紧部和所述第二针体压紧所述第一料带；
    所述旋转切刀旋转以使所述刃部靠近所述第一针体，所述第一针体和所述刃部切断所述第一料带。
  8. 根据权利要求1所述的追切卷绕方法，其特征在于，追切卷绕方法还包括：
    获取第一偏移量，所述第一偏移量指所述第二料带相对所述卷绕机构的偏移量；
    控制所述卷绕机构运动以抵消所述第一偏移量。
  9. 根据权利要求1所述的追切卷绕方法，其特征在于，所述第一输送线包括两个隔膜输送单元和一个第一极片输送单元，追切卷绕方法还包括：
    所述隔膜输送单元提供隔膜，所述第一极片输送单元提供第一极片；
    获取第二偏移量，所述第二偏移量指所述隔膜相对所述第一极片的偏移量；
    控制所述隔膜运动以抵消所述第二偏移量；
    将两个所述隔膜分别贴合在所述第一极片的两侧以形成所述第一料带；
    将所述第一料带送往所述追切工位。
  10. 根据权利要求9所述的追切卷绕方法，其特征在于，将所述第一料带送往所述追切工位这一步骤包括：
    切断所述第一料带；
    在切断位置粘贴保护胶以重新连接所述第一料带；
    将粘贴好的所述第一料带送往所述追切工位；
    其中，粘贴保护胶时在第一料带的两段之间留出间隙，进行追切这一步骤中切断的位置与所述间隙的位置一致。
  11. 一种多工位卷绕装置，其特征在于，包括：
    卷绕线，所述卷绕线首尾相连，所述卷绕线包括追切工位和卷绕工位，所述卷绕工位位于所述追切工位的下游；
    第一输送线，所述第一输送线用于向所述追切工位输送第一料带；
    第二输送线，所述第二输送线用于向所述卷绕工位输送第二料带；
    至少三个卷绕机构，所述卷绕机构能够沿所述卷绕线移动。
  12. 根据权利要求11所述的多工位卷绕装置，其特征在于：所述卷绕线还包括贴胶工位和下料工位，位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、所述贴胶工位和所述下料工位回到所述追切工位，所述卷绕工位和所述贴胶工位之间安装有用于收尾的收尾机构，所述贴胶工位安装有用于贴胶的贴胶机构。
  13. 根据权利要求11所述的多工位卷绕装置，其特征在于：所述卷绕线还包括下料工位， 位于所述追切工位的所述卷绕机构能够依次经过所述卷绕工位、和所述下料工位回到所述追切工位，所述卷绕工位安装有用于收尾和贴胶的收尾贴胶机构。
  14. 根据权利要求11所述的多工位卷绕装置，其特征在于：所述第一输送线包括两个隔膜输送单元和一个第一极片输送单元，所述隔膜输送单元用于提供隔膜，所述第一极片输送单元用于提供第一极片，所述第一输送线能够将两个所述隔膜分别贴合在所述第一极片的两侧以形成所述第一料带。
  15. 根据权利要求14所述的多工位卷绕装置，其特征在于：所述第一输送线包括预切工位，所述预切工位用于切断所述第一料带，所述预切工位用于在所述第一料带的切断位置形成间隙并粘贴保护胶。
  16. 根据权利要求11所述的多工位卷绕装置，其特征在于：所述卷绕机构包括卷针和旋转切刀，所述卷针包括第一针体和第二针体，所述第一针体和所述第二针体用于夹住所述第一料带，所述旋转切刀位于所述第一针体和所述第二针体之间，所述旋转切刀包括刃部和压紧部，所述刃部与所述第一针体相适配，所述压紧部与所述第二针体相适配，所述旋转切刀能够旋转以使所述刃部切断所述第一料带，所述旋转切刀能够旋转以使所述压紧部压紧所述第一料带。
  17. 根据权利要求11所述的多工位卷绕装置，其特征在于：所述卷绕机构能够沿轴线方向伸缩以进行纠偏。
PCT/CN2022/128732 2021-11-08 2022-10-31 一种追切卷绕方法及多工位卷绕装置 WO2023078217A1 (zh)

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