WO2023092910A1 - 极片裁切输送装置及叠片系统 - Google Patents

极片裁切输送装置及叠片系统 Download PDF

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Publication number
WO2023092910A1
WO2023092910A1 PCT/CN2022/082513 CN2022082513W WO2023092910A1 WO 2023092910 A1 WO2023092910 A1 WO 2023092910A1 CN 2022082513 W CN2022082513 W CN 2022082513W WO 2023092910 A1 WO2023092910 A1 WO 2023092910A1
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WIPO (PCT)
Prior art keywords
pole piece
lamination
feeding
cutting
section
Prior art date
Application number
PCT/CN2022/082513
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English (en)
French (fr)
Inventor
赵凯
尹东星
徐春龙
秦洁
王学飞
王轩
Original Assignee
蜂巢能源科技股份有限公司
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Publication of WO2023092910A1 publication Critical patent/WO2023092910A1/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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/02—Supporting web roll
    • B65H16/021—Multiple web roll supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
    • B65H35/002—Hand-held or table apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
    • B65H35/0073—Details
    • B65H35/008—Arrangements or adaptations of cutting devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • B65H37/002—Web delivery apparatus, the web serving as support for articles, material or another web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
    • B65H37/04—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching or stapling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/02—Associating,collating or gathering articles from several sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/173—Metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • 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 present application relates to the technical field of lithium ion production equipment, in particular to a pole piece cutting and conveying device and a stacking system.
  • Square lamination technology is one of the lithium-ion battery manufacturing technologies.
  • the speed and accuracy of the lamination technology directly determine the production capacity of the lithium-ion production line and the cost of cell manufacturing.
  • the lamination speed of the current lamination equipment is relatively slow. In order to meet the production capacity, there is a large demand for the number of equipment, resulting in a large footprint, high purchase costs, high maintenance costs and energy consumption, which is not conducive to energy conservation and environmental protection.
  • the purpose of this application is to provide a pole piece cutting and conveying device and a lamination system to solve the technical problem of the lamination equipment existing in the prior art that the lamination speed is too slow to a certain extent.
  • the application provides a pole piece cutting and conveying device, including a pole piece unwinding mechanism, a pole piece cutting mechanism and a pole piece transportation mechanism arranged in sequence;
  • the pole piece cutting mechanism is configured to cut the pole piece strip released by the pole piece unwinding mechanism to obtain pole pieces;
  • the pole piece transportation mechanism includes a ring-shaped feeding track and a plurality of feeding trolleys
  • the annular feeding track includes a feeding section and a reflux section connected end to end, and the end-to-end junctions of the feeding section and the reflux section are respectively a feeding station and a discharging station.
  • the material trolleys can move from the feeding station to the discharging station via the feeding section and move from the discharging station to the feeding station via the return section, so that each of the transportation Each material trolley can pick up the pole piece at the feeding station and release the pole piece at the discharging station.
  • the pole piece cutting and conveying device further includes a defect detection mechanism, and the defect detection mechanism is arranged between the pole piece cutting mechanism and the pole piece unwinding mechanism to detect Detecting the surface quality of the pole piece strip;
  • the annular feeding track also includes a rejecting section, the two ends of the rejecting section are respectively connected to the middle of the feeding section and the middle of the return section;
  • the defect detection mechanism is electrically connected to the material transport trolley to determine whether the surface quality of the pole pieces carried by the material transport trolley is qualified;
  • the transport trolley transports the pole pieces to the reject section and releases them in the reject section;
  • the transport trolley transports the pole piece to the discharging station.
  • the pole piece cutting mechanism includes a splint assembly and a cutting tool
  • the clamping plate assembly includes a first clamping plate and a second clamping plate arranged at a distance from each other, and the first clamping plate and the second clamping plate can be relatively close to or relatively far apart to clamp or loosen the free end of the pole piece strip ;
  • the cutting tool is arranged on the side of the clamping plate assembly close to the pole piece unwinding mechanism, so as to cut the pole piece material during the process of clamping the pole piece strip by the clamping plate assembly belt and obtain the pole piece;
  • the clamping plate assembly is configured to move reciprocally along the delivery direction of the pole piece strip, so as to release the pole piece after the pole piece strip is cut and move toward the pole piece unwinding mechanism, and clamping the uncut pole piece strip and pulling it towards the feeding station.
  • the pole piece cutting and conveying device further includes a deviation correction mechanism, and the deviation correction mechanism is arranged between the pole piece cutting mechanism and the pole piece unwinding mechanism, so as to Detecting the deviation of the unwinding track of the pole piece material strip;
  • the deviation correcting mechanism is electrically connected with the pole piece unwinding mechanism, so as to adjust the position of the pole piece unwinding mechanism according to the deviation of the unwinding track.
  • a plurality of said transport trolleys are arranged on the circular feeding track in a magnetic levitation manner
  • the pole piece transportation mechanism also includes a feeding roller, the feeding roller is spaced apart from the feeding station to form a feeding port between the two, and the feeding roller can drive the The pole piece enters the inlet.
  • the present application also provides a stacking system, including the pole piece cutting and conveying device described in any of the above technical solutions.
  • the number of the pole piece cutting and conveying devices is two, and the two pole piece cutting and conveying devices are respectively configured to convey the positive electrode sheet and the negative electrode sheet;
  • the lamination system also includes a lamination track and a lamination mechanism
  • the two ends of the lamination track are respectively arranged below the discharge stations of the two pole piece cutting and conveying devices, and the lamination mechanism can cut two pole pieces along the lamination track.
  • the discharge station of the conveying device reciprocates, so that the two pole sheet cutting conveying devices alternately stack the positive electrode sheet and the negative electrode at the end of the lamination track to the lamination mechanism piece.
  • the stacking mechanism includes a stacking platform and a pressing plate
  • At least one lamination station is provided on the lamination platform, and when the lamination platform moves to the end of the lamination track, all the lamination stations and the discharge station One-to-one correspondence of the transport trolleys, so that the pole pieces released by the transport trolleys are placed on all the stacking stations in a one-to-one correspondence;
  • the pressing plate is movably connected with the stacking platform, so as to move to avoid the pole piece when the transport trolley releases the pole piece, and move to avoid the pole piece after the pole piece is placed on the stacking station. Pressing the pole piece toward the lamination platform.
  • both ends of the lamination track form a climbing section extending in the up and down direction, so that the material transport trolley stacks to the lamination mechanism in the climbing section;
  • the distance between the upper end and the lower end of the climbing section is not less than the target lamination thickness.
  • the diaphragm unwinding mechanism includes an unwinding roller and a pulling roller, and the unwinding roller and the pulling roller are configured to tension and draw the diaphragm;
  • the unwinding roller is arranged between the two pole piece cutting and conveying devices, and the pulling roller is arranged in the laminating mechanism, so that the pulling roller moves back and forth with the laminating platform.
  • the pole piece cutting and conveying device includes a pole piece unwinding mechanism, a pole piece cutting mechanism and a pole piece transporting mechanism arranged in sequence.
  • the pole piece cutting mechanism is configured to cut the pole piece strip released by the pole piece unwinding mechanism to obtain pole pieces;
  • the pole piece transportation mechanism includes a circular feeding track and a plurality of feeding trolleys;
  • the circular feeding track includes the head and tail
  • the feeding section and the return section are connected, and the end-to-end junctions of the feeding section and the returning section are the feeding station and the discharging station respectively.
  • Multiple transport trolleys can pass from the feeding station to the feeding station through the feeding section.
  • the discharge station moves and moves from the discharge station to the feed station through the reflow section, so that each transport trolley can pick up the pole piece at the feed station and carry out the pole piece at the discharge station. freed.
  • the pole piece cutting and conveying device can track and transport multiple pole pieces one by one through multiple transport trolleys, which has high transfer efficiency and can be released at fixed points.
  • the accumulation is small and the rotation precision is high, so that the lamination system using the pole piece cutting and conveying device has extremely high lamination efficiency and lamination precision.
  • the lamination system provided by the present application includes the above-mentioned pole piece cutting and conveying device, so all the beneficial effects of the pole piece cutting and conveying device can be realized.
  • FIG. 1 is a schematic structural diagram of a lamination system provided in Embodiment 2 of the present application;
  • Fig. 2 is a partial enlarged view of Fig. 1 at place A;
  • Fig. 3 is a partial enlarged view of Fig. 1 at place B;
  • FIG. 4 is a schematic structural diagram of a laminated product produced by the laminated system provided in Embodiment 2 of the present application.
  • 1-lamination system 10-positive plate cutting and conveying device; 100-positive plate material belt; 101-defect detection mechanism; 102-cutting tool; ;104-circular feeding track; 1040-feeding section; 1041-reflux section; 1042-rejection section; 105-positive plate unwinding mechanism; 106-carriage; 107-positive plate; Conveying device; 110-negative electrode strip; 111-negative electrode unwinding mechanism; 112-negative electrode; 12-diaphragm unwinding mechanism; 120-unwinding roller; 121-pulling roller; 122-diaphragm; 13-lamination Track; 130-the first climbing section; 131-the second climbing section; 14-the lamination mechanism.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
  • the embodiment of the present application provides a pole piece cutting and conveying device including a pole piece unwinding mechanism, a pole piece cutting mechanism and a pole piece transportation mechanism arranged in sequence, wherein the so-called sequential Secondary setting refers to sequential setting along the unwinding direction, that is, the direction in which the pole piece strips are delivered, so that the pole piece strips released by the pole piece unwinding mechanism are successively delivered to the pole piece cutting mechanism and the pole piece transport mechanism.
  • the pole piece cutting mechanism is configured to cut the pole piece material tape released by the pole piece unwinding mechanism to obtain pole pieces.
  • the pole piece unwinding mechanism can adopt the existing equipment with the pole piece unwinding function, for example, the pole piece unwinding mechanism includes a discharge roller and a driving roller.
  • the discharge roller is made of steel and has an outer diameter of 3mm.
  • the roller On the roller, the other end of the pole piece material belt is a free end, and the driving roller is frictionally connected with the other end of the pole piece material belt, so as to drive the pole piece through friction force, and cooperate with the active rotation of the discharge roller, so that the material belt can move from The discharge roller is pulled out, the friction coefficient between the driving roller and the pole piece is 0.1-0.8, and the unwinding speed of the discharge roller is 5-100 m/min.
  • the pole piece cutting mechanism can cut the free end of the pole piece strip piece by piece according to the predetermined size, so that the pole piece strip is delivered to the pole piece cutting mechanism while being cut into pole pieces, and the cutting efficiency is 80 ⁇ 400 pieces/minute, and the length of each pole piece obtained by cutting is 60 ⁇ 600mm.
  • the pole piece transportation mechanism includes an annular feeding track 104 and a plurality of feeding trolleys 106 .
  • the number of feeding trolleys 106 is 10-60
  • the annular feeding track 104 includes a straight track portion and an arc track portion, the diameter of the arc track portion is 50-300mm, and the length of the straight track portion is 3 ⁇ 10m.
  • the annular feeding track 104 includes a feeding section 1040 and a recirculation section 1041 connected end to end, where the end to end connection of the feeding section 1040 and the reflow section 1041 is respectively a feeding station and a discharging station.
  • a plurality of feeding trolleys 106 can pick up the pole piece at the feeding station, and a plurality of feeding trolleys 106 can move from the feeding station to the discharging station through the feeding section 1040, so that the multiple feeding trolleys 106 can carry the pole pieces to move from the feeding station to the discharging station via the feeding section 1040 .
  • a plurality of feeding trolleys 106 can release the pole pieces at the discharging station for stacking, and the conveying trolleys 106 release the pole pieces to become vacant feeding trolleys 106, that is, become vacant at the discharging station. Material delivery dolly 106.
  • a plurality of transport trolleys 106 can all move from the discharge station to the entry station via the return section 1041, so that the controlled transport trolley 106 flows back from the discharge station to the entry station via the return section 1041, for use in
  • the feeding station picks up the newly cut pole pieces, and this cycle is used to continuously and stably pick up, transport and release the pole pieces.
  • the pole piece transportation mechanism also includes a feeding roller, which is spaced from the feeding station to form a feeding port between the two, and the feeding roller can drive the pole piece into the feeding port, thereby improving the transportation efficiency.
  • the feeding section 1040 is linear, and the return section 1041 is C-shaped, so as to reduce the difficulty of turning the material transport trolley 106, thereby improving the efficiency of the material transport trolley 106 returning from the discharging station to the feeding station.
  • the transport trolley 106 includes a pick-up plate and a pick-up driving member, the pick-up plate is formed with a positioning groove that matches the pole piece, so that the pole piece is limited in the positioning groove, and the pick-up drive member acts on the positioning groove
  • the pick-up drive member can pick up the pole piece through the principle of electrostatic adsorption or vacuum adsorption.
  • a plurality of transport trolleys 106 are arranged on the circular feeding track 104 in a magnetic levitation manner, so that the start-stop accuracy and speed regulation precision of the transport trolleys 106 can be improved.
  • the pole piece cutting and conveying device also includes a defect detection mechanism 101, and the defect detection mechanism 101 is arranged between the pole piece cutting mechanism and the pole piece unwinding mechanism to check the surface of the pole piece strip. The quality is inspected to confirm whether the surface quality of the pole piece delivered to the pole piece transport mechanism is qualified.
  • the surface quality of the pole sheet strip may include whether there are white spots, dropped material or foil leakage on the surface.
  • the defect detection mechanism 101 can be a device with a surface defect detection function in the prior art. Perform image detection.
  • the deviation correcting mechanism in order to avoid the deviation of the pole piece material belt during the unwinding process of the pole piece unwinding mechanism, and to avoid the deflection of the pole piece at the release position of the discharge station, the deviation correcting mechanism is set at the pole piece cutting position. Between the cutting mechanism and the pole piece unwinding mechanism to detect the deviation of the unwinding track of the pole piece strip.
  • the deviation correcting mechanism can adopt the existing equipment with correcting function.
  • the deviation correcting mechanism includes a position sensor configured to detect the position of the edge of the pole piece material belt, so as to judge the position of the pole piece material belt according to the detection result of the position sensor. Whether left or right offset occurs.
  • the deviation correction mechanism is electrically connected with the pole piece unwinding mechanism to adjust the position of the pole piece unwinding mechanism according to the deviation of the unwinding track. Move to the left, if the pole piece strip deviates to the left, then move the pole piece unwinding mechanism to the right, so as to achieve the purpose of correcting the position of the pole piece strip.
  • the deviation correction mechanism is arranged closer to the pole piece unwinding mechanism than the pole piece cutting mechanism.
  • the annular feeding track 104 also includes a rejecting section 1042, and the two ends of the rejecting section 1042 are respectively connected with the middle part of the feeding section 1040 and the middle part of the return section 1041, so that the transport trolley 106 can directly pass through the The reject section 1042 moves from the middle of the feeding section 1040 to the middle of the return section 1041 .
  • the middle part of the feeding section 1040 and the middle part of the return section 1041 are not necessarily the absolute midpoints of the two along the length direction, as long as the feeding section 1040 and the return section 1041 are located at the feeding station and Somewhere between the discharge stations is enough, and the specific location can be selected and adjusted according to the needs.
  • the defect detection mechanism 101 is electrically connected with the material delivery trolley 106, that is to say, the defect detection mechanism 101 can communicate with the material delivery trolley 106 in a direct or indirect manner and in a wired or wireless manner, so as to determine the poles carried by the material delivery trolley 106. Whether the surface quality of the chip is qualified, and then provide a basis for the transport trolley 106 to choose the direction of travel at the intersection of the feeding section 1040 and the rejecting section 1042.
  • the material transport trolley 106 transports the pole piece to the reject section 1042 , and releases the pole piece at the reject section 1042 .
  • a waste recovery mechanism is provided on the side of the reject section 1042, so as to recycle the waste pole pieces released by the transport trolley 106 in the waste section 1042, thereby facilitating centralized treatment of waste pole pieces.
  • the waste recycling mechanism may be a waste recycling bin or a waste recycling vehicle.
  • the material transport trolley 106 When the surface of the pole piece carried by the material transport trolley 106 is qualified, the material transport trolley 106 will directly transport the pole piece over the reject section 1042 to the discharge station, thereby ensuring that the pole pieces transported to the discharge station are of surface quality Qualified pole pieces.
  • the reject section 1042 By setting the reject section 1042, not only the transfer distance of the pole piece will not be extended, but the transfer offset of the pole piece will be kept small, and there is no need to add a belt reject mechanism, which effectively reduces the size of the equipment. Further, the rejecting process can be completed without prolonging the transfer distance of the pole piece, which effectively improves the transfer efficiency of the pole piece.
  • the pole piece cutting mechanism in order to improve the cutting efficiency and the efficiency of delivering the pole piece to the feed port, includes a splint assembly 103 and a cutting knife 102.
  • the cutting knife 102 can be metal Cutting knives, ceramic cutting knives, or laser cutting knives are not limited here.
  • the clamping plate assembly 103 includes a first clamping plate 1030 and a second clamping plate 1031 arranged at a distance from each other.
  • the first clamping plate 1030 and the second clamping plate 1031 can be relatively close to or relatively far apart to clamp or loosen the free end of the pole piece strip, specifically In other words, the first clamping plate 1030 and the second clamping plate 1031 are respectively arranged facing the two sides of the pole strip.
  • the cutting tool 102 is arranged on the side of the clamping plate assembly 103 close to the pole piece unwinding mechanism, so as to cut the free end of the pole piece material strip during the process of clamping the pole piece strip by the clamping plate assembly 103 and obtain the pole piece strip. Therefore, through the clamping and positioning effect of the splint assembly 103 on the pole piece strip, the stability of the applied force of the cutting tool 102 for cutting can be improved, thereby improving the cutting precision of the pole piece.
  • the clamping plate assembly 103 is configured to be able to move back and forth along the delivery direction of the pole piece strip, so as to loosen the pole piece after the pole piece strip is cut and move toward the pole piece unwinding mechanism, and uncut pole piece material
  • the belt is clamped and pulled toward the feeding station, and so reciprocated, the pole piece cutting can be continuously performed through the cooperation of the clamping plate assembly 103 and the cutting tool 102 .
  • the splint assembly 103 also has a mount and a drive cylinder (not shown in the figure), the drive cylinder is connected to the mount and can drive the mount to reciprocate, and the first splint 1030 and the second splint 1031 are movably connected to the mount , so that the first splint 1030 and the second splint 1031 can be relatively close or relatively far away.
  • Embodiment 2 provides a stacking system, which includes the pole piece cutting and conveying device in embodiment 1.
  • the technical features of the pole piece cutting and conveying device disclosed in embodiment 1 are also applicable to this embodiment.
  • Example 1 The technical features of the disclosed pole piece cutting and conveying device will not be described repeatedly.
  • the number of pole piece cutting and conveying devices is two, and the two pole piece cutting and conveying devices are positive pole piece cutting and conveying device 10 and negative pole piece respectively.
  • Cutting and conveying device 11 wherein the positive electrode sheet cutting and conveying device 10 includes a positive electrode sheet unwinding mechanism 105, and the positive electrode sheet unwinding mechanism 105 is configured to convey the positive electrode sheet material belt 100, so that the electrode sheet cutting mechanism can cut it
  • the negative electrode sheet cutting and conveying device 11 includes a negative electrode sheet unwinding mechanism 111, and the negative electrode sheet unwinding mechanism 111 is configured to transport the negative electrode sheet material belt 110, so that the electrode sheet cutting mechanism can cut it to obtain negative electrode sheet 112 .
  • the stacking system 1 further includes a stacking track 13 and a stacking mechanism 14 .
  • the two ends of the lamination track 13 are respectively arranged below the discharge stations of the two pole piece cutting and conveying devices, and the lamination mechanism 14 can move along the lamination track 13 at the discharge stations of the two pole piece cutting and conveying devices. reciprocating movement between them, so that the two pole sheet cutting and conveying devices alternately stack the positive electrode sheet 107 and the negative electrode sheet 112 at the end of the lamination track 13 to the lamination mechanism 14, thereby realizing the alternation of the positive electrode sheet 107 and the negative electrode sheet 112 stack.
  • the stacking mechanism 14 includes a stacking platform and a pressing plate.
  • At least one lamination station is arranged on the lamination platform, and the lamination platform is movably connected with the lamination track 13, and can reciprocate along the lamination track 13 between the discharge stations of the two pole piece cutting and conveying devices, When the lamination platform moved to the end of the lamination track 13, all the lamination stations corresponded one-to-one with the material transport trolley 106 of the discharge station, so that the pole pieces released by the material transport trolley 106 were placed in one-to-one correspondence. On all lamination stations, wherein, when there are multiple lamination stations, multiple sets of pole pieces can be stacked at the same time, further improving the lamination efficiency.
  • the pressing plate is movably connected with the stacking platform to move to avoid the pole piece when the transport trolley 106 releases the pole piece, and move to press the pole piece toward the stacking platform after the pole piece is placed on the stacking station, with the help of the pressing plate , which can ensure that the stacked pole pieces can remain in place, avoiding displacement, deformation or dumping during the reciprocating movement of the stacking platform, which is conducive to improving the stacking accuracy.
  • the pressing plate is movably connected with the stacking platform, specifically, the pressing plate can be lifted or telescopically arranged on the stacking platform.
  • both ends of the stacking track 13 form a climbing section extending in the up and down direction, so that the material transport trolley 106 stacks stacks toward the stacking mechanism 14 during the climbing section.
  • the end of the lamination rail 13 corresponding to the positive electrode sheet cutting and conveying device 10 forms the first climbing section 130
  • the end of the lamination rail 13 corresponding to the negative electrode sheet cutting and conveying device 11 forms the second climbing section.
  • the distance between the upper end and the lower end of the first climbing section 130 and the second climbing section 131 is not less than the target lamination thickness, thereby ensuring that the lamination platform is at the first climbing section 130 and the second climbing section 131 every time After the stop, the next layer of pole pieces can continue to be stacked on top of the stacked part.
  • the membrane unwinding mechanism 12 includes an unwinding roller 120 and a pulling roller 121 , and the unwinding roller 120 and the pulling roller 121 are configured to tension and pull the membrane 122 .
  • the unwinding roller 120 is arranged above the two pole piece cutting and conveying devices, and the pulling roller 121 is arranged between the two pole piece cutting and conveying devices, so as to ensure that the diaphragm 122 moves back and forth with the stacking platform , the diaphragm 122 will not interfere spatially with the two pole piece cutting and conveying devices.
  • the lamination system also includes existing post-processing equipment such as a glue-applying mechanism, a hot-pressing mechanism, a weighing inspection, and a feeding mechanism, wherein, in the discharging mechanism, unqualified laminated products can be rejected .
  • existing post-processing equipment such as a glue-applying mechanism, a hot-pressing mechanism, a weighing inspection, and a feeding mechanism, wherein, in the discharging mechanism, unqualified laminated products can be rejected .
  • the lamination steps of the lamination system are as follows:
  • the positive electrode sheet cutting and conveying device 10 cuts and conveys the positive electrode sheet 107
  • the negative electrode sheet cutting and conveying device 11 cuts and conveys the negative electrode sheet 112 .
  • At least one transport trolley 106 at the discharge station of the positive electrode sheet cutting and conveying device 10 carries the positive electrode sheet 107, and the stacking platform moves to the first climbing section 130 along the stacking track 13, and in the first climbing section 130 stays at the position where the pressing sheet is kept at a high level with the positive electrode sheet 107 carried by at least one transport trolley 106, and at the same time, the position of at least one transport trolley 106 is respectively in line with at least one lamination station of the lamination platform.
  • the diaphragm 122 above the pressing sheet covers the top of the upper layer of negative electrode sheet 112, and the tops of the stacked parts at all stacking stations are exposed towards the transport trolley 106, and at least one transport trolley 106 releases the positive electrode sheets 107, so that at least one positive electrode sheet 107 is accurately stacked on at least one stacking station one by one, and then the stacked parts at all stacking stations are pressed down and positioned by pressing the sheet.
  • the stacking process of one layer of positive electrode sheets 107 is completed, and the stacking platform moves to the second climbing section 131 along the stacking track 13.
  • the diaphragm 122 is pulled and covered on the pressing plate during the pulling process.
  • the separator 122 covers the top of the positive electrode sheet 107 of the previous layer, and then the stacking process of the negative electrode sheet 112 of the next layer is carried out. In this way, the negative electrode sheet 112 of this layer passes through the positive electrode sheet 107 of the previous layer.
  • the specific stacking process of the negative electrode sheet 112 of this layer is the same as the stacking process of the positive electrode sheet 107 of the upper layer, and will not be repeated here.
  • the lamination platform After the lamination process of the negative electrode sheet 112 of this layer is completed, the lamination platform returns to the first climbing section 130 along the lamination track 13 to perform the lamination operation of the positive electrode sheet 107 of the next layer, and so on, until the lamination is completed and more Group laminated products, that is, batteries.
  • a set of lamination products is placed in each lamination station, and any layer of diaphragms of all lamination products are connected.
  • adjacent stacks can be The diaphragm between the sheet stations, that is, between adjacent laminated products, is cut to obtain multiple sets of independent laminated products.
  • each pole piece is released, dropped and positioned directly towards each corresponding stacking station. During this process, there is no transfer manipulator and positioning platform, no poor positioning, and the transfer offset of the pole piece is small. The bit has a higher alignment, and the time utilization rate of the equipment and the stacking yield rate are significantly improved.
  • the stacking system in this embodiment has the advantages of the pole piece cutting and conveying device in the first embodiment, and the advantages of the pole piece cutting and conveying device disclosed in the first embodiment will not be repeated here.
  • any one of the claimed embodiments may be used in any combination.
  • the information disclosed in the background technology section is only intended to deepen the understanding of the general background technology of the application, and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art known to those skilled in the art.
  • the present disclosure provides a pole piece cutting and conveying device and a stacking system.
  • a plurality of trolleys are used to track and transport multiple pole pieces one by one, which has high transfer efficiency and can be released at a fixed point.
  • the pole piece release position has high accuracy, the transfer process is small, the accumulation of offset is small, and the rotation accuracy is high. Therefore, the lamination system using the pole piece cutting and conveying device has extremely high lamination efficiency and lamination precision, and can perform cutting, transportation and lamination efficiently and accurately.

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Abstract

本申请涉及锂电池生产设备技术领域，尤其是涉及一种极片裁切输送装置及叠片系统。该极片裁切输送装置包括顺次设置的极片放卷机构、极片裁切机构和极片运输机构；极片裁切机构将极片放卷机构放出的极片料带进行裁片以得到极片；极片运输机构包括环形入料轨道和多个运料小车；环形入料轨道包括首尾相接的入料段和回流段，入料段与回流段的首尾相接处分别为入料工位和出料工位，每个运料小车均能够在入料工位拾取极片并在出料工位释放极片。该叠片系统包括该极片裁切输送装置。该极片裁切输送装置和该叠片系统，通过运料小车对极片进行拾取、输送和释放，转运偏移量小，中转流程少，即可高效且精准地进行裁片、运输和叠片。

Description

极片裁切输送装置及叠片系统
相关申请的交叉引用
本申请要求于2021年11月25日提交中国专利局的申请号为2021114121209、名称为“极片裁切输送装置及叠片系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及锂离子生产设备技术领域，尤其是涉及一种极片裁切输送装置及叠片系统。
背景技术
方形叠片技术是锂离子电池制造技术之一，叠片技术的快慢和精度直接决定了锂离子生产线的产能与电芯制造成本。
目前的叠片设备的叠片速度较慢，为了满足产能，造成设备台数需求量很大，导致占地面积大，购置成本高，后期维护成本以及能源消耗大，不利于节能环保。
申请内容
本申请的目的在于提供一种极片裁切输送装置及叠片系统，以在一定程度上解决现有技术中存在的叠片设备的叠片速度过慢的技术问题。
本申请提供了一种极片裁切输送装置，包括顺次设置的极片放卷机构、极片裁切机构和极片运输机构；
所述极片裁切机构配置为将所述极片放卷机构放出的极片料带进行裁片处理以得到极片；
所述极片运输机构包括环形入料轨道和多个运料小车；
所述环形入料轨道包括首尾相接的入料段和回流段，所述入料段与所述回流段的首尾相接处分别为入料工位和出料工位，多个所述运料小车均能够经由入料段从入料工位向所述出料工位移动以及经由所述回流段从所述出料工位向所述入料工位移动，以使每个所述运料小车均能够在所述入料工位对所述极片进行拾取并在所述出料工位对所述极片进行释放。
在上述技术方案中，进一步地，所述极片裁切输送装置还包括缺陷检测机构，所述缺陷检测机构设置于所述极片裁切机构与所述极片放卷机构之间，以对所述极片料带的表面 质量进行检测；
所述环形入料轨道还包括剔废段，所述剔废段的两端分别与所述入料段的中部和所述回流段的中部相连接；
所述缺陷检测机构与所述运料小车电连接，以确定所述运料小车携带的所述极片的表面质量是否合格；
当所述运料小车携带的所述极片的表面质量不合格时，所述运料小车将所述极片运输至所述剔废段并在所述剔废段释放；
当所述运料小车携带的所述极片的表面合格时，所述运料小车将所述极片运输至所述出料工位。
在上述任一技术方案中，进一步地，所述极片裁切机构包括夹板组件和裁切刀具；
所述夹板组件包括相对间隔设置的第一夹板和第二夹板，所述第一夹板和所述第二夹板能够相对靠近或相对远离以对所述极片料带的自由端进行夹持或放松；
所述裁切刀具设置于所述夹板组件的靠近所述极片放卷机构的一侧，以在所述夹板组件对所述极片料带进行夹持的过程中裁切所述极片料带并得到所述极片；
所述夹板组件被配置为能够沿所述极片料带的递送方向往复移动，以在所述极片料带被裁切后松开所述极片并朝向所述极片放卷机构移动，以及将未裁切的所述极片料带进行夹持并朝向所述入料工位拉动。
在上述任一技术方案中，进一步地，所述极片裁切输送装置还包括纠偏机构，所述纠偏机构设置于所述极片裁切机构与所述极片放卷机构之间，以对所述极片料带的放卷轨迹偏差进行检测；
所述纠偏机构与所述极片放卷机构电连接，以根据所述放卷轨迹偏差调节所述极片放卷机构的位置。
在上述任一技术方案中，进一步地，多个所述运料小车以磁悬浮的方式设置于所述环形入料轨道；
和/或，所述极片运输机构还包括入料辊，所述入料辊与所述入料工位间隔设置以在二者之间形成入料口，所述入料辊能够驱动所述极片进入所述入料口。
本申请还提供了一种叠片系统，包括上述任一技术方案所述的极片裁切输送装置。
在上述任一技术方案中，进一步地，所述极片裁切输送装置的数量为两个，两个所述极片裁切输送装置分别配置为输送正极片和负极片；
所述叠片系统还包括叠片轨道和叠片机构；
所述叠片轨道的两端分别设置于两个所述极片裁切输送装置的出料工位的下方，所述叠片机构能够沿所述叠片轨道在两个所述极片裁切输送装置的出料工位之间往复移动，以 使两个所述极片裁切输送装置在所述叠片轨道的端部向所述叠片机构交替叠放所述正极片和所述负极片。
在上述任一技术方案中，进一步地，所述叠片机构包括叠片平台和压板；
所述叠片平台上设置有至少一个叠片工位，当所述叠片平台移动至所述叠片轨道的端部时，所有所述叠片工位与所述出料工位的所述运料小车一一对应，以使所述运料小车释放的所述极片一一对应地放置在所有所述叠片工位上；
所述压板与所述叠片平台活动连接，以在所述运料小车释放所述极片时移动至避让所述极片，并在所述极片放置在所述叠片工位后移动至朝向所述叠片平台压紧所述极片。
在上述任一技术方案中，进一步地，所述叠片轨道的两端均形成沿上下方向延伸的爬升段，以使所述运料小车在所述爬升段向所述叠片机构叠片；
所述爬升段的上端和下端之间的距离不小于目标叠片厚度。
在上述任一技术方案中，进一步地，所述隔膜放卷机构包括放卷辊和抽拉辊，所述放卷辊与所述抽拉辊配置为张紧并抽动隔膜；
所述放卷辊设置于两个所述极片裁切输送装置之间，所述抽拉辊设置于所述叠片机构，以使所述抽拉辊随所述叠片平台往复移动。
与现有技术相比，本申请的有益效果为：
本申请提供的极片裁切输送装置，包括顺次设置的极片放卷机构、极片裁切机构和极片运输机构。极片裁切机构配置为将极片放卷机构放出的极片料带进行裁片处理以得到极片；极片运输机构包括环形入料轨道和多个运料小车；环形入料轨道包括首尾相接的入料段和回流段，入料段与回流段的首尾相接处分别为入料工位和出料工位，多个运料小车均能够经由入料段从入料工位向出料工位移动以及经由回流段从出料工位向入料工位移动，以使每个运料小车均能够在入料工位对极片进行拾取并在出料工位对极片进行释放。
从而该极片裁切输送装置，通过多个运料小车一一对应地定轨运输多个极片，转运效率高，并能够定点释放，极片释放位置精度高，中转流程小，偏移量累积小，转动精度高，从而使得应用该极片裁切输送装置的叠片系统具有极高的叠片效率和叠片精度。
本申请提供的叠片系统，包括上述的极片裁切输送装置，因而能够实现该极片裁切输送装置的所有有益效果。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，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为本申请实施例二提供的叠片系统的结构示意图；
图2为图1在A处的局部放大图；
图3为图1在B处的局部放大图；
图4为本申请实施例二提供的叠片系统生产的叠片产品的结构示意图。
附图标记：
1-叠片系统；10-正极片裁切输送装置；100-正极片料带；101-缺陷检测机构；102-裁切刀具；103-夹板组件；1030-第一夹板；1031-第二夹板；104-环形入料轨道；1040-入料段；1041-回流段；1042-剔废段；105-正极片放卷机构；106-运料小车；107-正极片；11-负极片裁切输送装置；110-负极片料带；111-负极片放卷机构；112-负极片；12-隔膜放卷机构；120-放卷辊；121-抽拉辊；122-隔膜；13-叠片轨道；130-第一爬升段；131-第二爬升段；14-叠片机构。
具体实施方式
下面将结合附图对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，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申请的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
实施例一
结合图1至图4所示，本申请的实施例提供了一种极片裁切输送装置包括顺次设置的极片放卷机构、极片裁切机构和极片运输机构，其中，所谓顺次设置是指沿着放卷方向也 就是极片料带被递送的方向顺次设置，从而使得极片放卷机构放出的极片料带被先后递送至极片裁切机构和极片运输机构。
极片裁切机构配置为将极片放卷机构放出的极片料带进行裁片处理以得到极片。其中，极片放卷机构可以采用现有的具有极片放卷功能的设备，例如，极片放卷机构包括放料辊和驱动辊，常规的，放料辊为钢材质，外径为3～9英寸，有充气胀紧功能，一端固定在竖直放置的设备大板上，另一端悬空或者通过可移动支架或固定支架进行支撑；待放卷的极片料带的一端缠绕在放料辊上，极片料带的另一端为自由端，驱动辊与极片料带的另一端摩擦连接，以通过摩擦力驱动极片，并与放料辊的主动转动相配合，使得料带从放料辊抽出，驱动辊与极片间的摩擦系数为0.1～0.8，放料辊的放卷线速度为5～100米/分钟。此外，极片裁切机构能够将极片料带的自由端根据预定尺寸逐段切割，以使极片料带一边向极片裁切机构递送，一边被切割为极片，裁切效率为80～400片/分钟，裁切得到的每个极片的长度尺寸为60～600mm。
极片运输机构包括环形入料轨道104和多个运料小车106。其中，可选地，运料小车106数量为10～60个，环形入料轨道104包括直线轨道部和圆弧轨道部，的圆弧轨道部的直径为50～300mm，直线轨道部的长度为3～10m。
环形入料轨道104包括首尾相接的入料段1040和回流段1041，入料段1040与回流段1041的首尾相接处分别为入料工位和出料工位。
多个运料小车106均能够在入料工位对极片进行拾取，多个运料小车106均能够经由入料段1040从入料工位向出料工位移动，从而多个运料小车106均能够携带极片经由入料段1040从入料工位移动至出料工位。
多个运料小车106均能够在出料工位对极片进行释放，以进行叠片，运料小车106将极片释放后成为空置的运料小车106，也即在出料工位成为空置的运料小车106。
多个运料小车106均能够经由回流段1041从出料工位向入料工位移动，从而控制的运料小车106经由回流段1041从出料工位回流至入料工位，以供在入料工位对新裁切的极片进行拾取，如此循环，以持续且稳定地对极片进行拾取、运输和释放。
可选地，极片运输机构还包括入料辊，入料辊与入料工位间隔设置以在二者之间形成入料口，入料辊能够驱动极片进入入料口，从而提高运料小车106对于极片的拾取成功率。
可选地，入料段1040呈直线状，回流段1041呈C字形，以减小运料小车106的转向难度，进而提高运料小车106由出料工位返回入料工位的效率。
本实施例中，运料小车106包括拾取板和拾取驱动构件，拾取板形成有与极片相适配的定位槽，以使极片被限位于定位槽内，拾取驱动构件作用于定位槽内，拾取驱动构件例如可以通过静电吸附或者真空吸附的原理实现对极片进行拾取。
可选地，多个运料小车106以磁悬浮的方式设置于环形入料轨道104，从而能够提高运料小车106的启停精度和调速精度。
本实施例的可选方案中，极片裁切输送装置还包括缺陷检测机构101，缺陷检测机构101设置于极片裁切机构与极片放卷机构之间，以对极片料带的表面质量进行检测，以确认向极片运输机构递送的极片的表面质量是否合格。其中，极片料带的表面质量可以包括表面是否出现白斑、掉料或者漏箔等。
此外，如图1所示，缺陷检测机构101可以为现有技术中的具有表面缺陷检测功能的设备，例如，缺陷检测机构101通过线阵相机或者面阵相机对极片料带的两侧面均进行图像检测。
本实施例中，为了避免极片放卷机构在放卷过程中发生极片料带走偏的现象，进而避免极片在出料工位的释放位置发生偏斜，纠偏机构设置于极片裁切机构与极片放卷机构之间，以对极片料带的放卷轨迹偏差进行检测。其中，纠偏机构可以采用现有的具有纠偏功能的设备，例如，纠偏机构包括配置为对极片料带的边缘所处位置进行检测的位置传感器，从而通过位置传感器的检测结果判断极片料带是否发生左右偏移。
纠偏机构与极片放卷机构电连接，以根据放卷轨迹偏差调节极片放卷机构的位置，具体而言，如果极片料带发生向右的偏移，那么将极片放卷机构向左移动，如果极片料带发生向左的偏移，那么将极片放卷机构向右移动，从而达到对于极片料带的位置进行纠偏的目的。
可选地，为了确保纠偏机构进行极片料带纠偏的及时性，将纠偏机构相对于极片裁切机构更靠近极片放卷机构地设置。
本实施例的可选方案中，为了避免表面质量不合格的极片与表面质量合格的极片发生混杂，需要对表面质量不合格的极片进行剔除，从而确保出料工位释放的极片的表面质量均合格，环形入料轨道104还包括剔废段1042，剔废段1042的两端分别与入料段1040的中部和回流段1041的中部相连接，从而运料小车106可以直接经由剔废段1042从入料段1040的中部运动至回流段1041的中部。
值得解释的是，入料段1040的中部和回流段1041的中部并不一定是二者各自沿长度方向的绝对中点处，只要是入料段1040和回流段1041上位于入料工位和出料工位之间的某处即可，具体位置可以根据需求进行选择和调整。
缺陷检测机构101与运料小车106电连接，也就是说，缺陷检测机构101可以以直接或间接的方式以及有线或者无线的方式与运料小车106进行通信，以确定运料小车106携带的极片的表面质量是否合格，进而为运料小车106在入料段1040与剔废段1042的交叉路口选择行进方向提供依据。
当运料小车106携带的极片的表面质量不合格时，运料小车106将极片运输至剔废段1042，并在剔废段1042将极片释放。可选地，在剔废段1042的侧部设置有废料回收机构，从而将运料小车106在剔废段1042释放的废弃极片进行回收，进而便于对废弃极片进行集中处理。废料回收机构可以为废料回收箱或者废料回收车等。
当运料小车106携带的极片的表面合格时，运料小车106将极片越过剔废段1042直接运输至出料工位，从而能够确保运输至出料工位的极片均为表面质量合格的极片。
通过设置该剔废段1042，不仅不会延长极片的转运距离，确保极片保持较小的转运偏移量，而且无需增设皮带剔废机构，有效地减小了设备的尺寸。进一步地，在不延长极片的转运距离的前提下，即可完成剔废工序，有效提高了极片的转运效率。
本实施例的可选方案中，为了提高裁片效率以及极片向入料口递送的效率，极片裁切机构包括夹板组件103和裁切刀具102，可选地，裁切刀具102可以为金属切割刀具、陶瓷切割刀具或者激光切割刀具等，在此不做局限。
夹板组件103包括相对间隔设置的第一夹板1030和第二夹板1031，第一夹板1030和第二夹板1031能够相对靠近或相对远离以对极片料带的自由端进行夹持或放松，具体而言，第一夹板1030和第二夹板1031分别面对极片料带的两侧面设置。
裁切刀具102设置于夹板组件103的靠近极片放卷机构的一侧，以在夹板组件103对极片料带进行夹持的过程中对极片料带的自由端进行裁切并得到极片，从而通过夹板组件103对于极片料带的夹持定位作用，能够提高裁切刀具102进行切割的施力稳定性，进而提高极片切割精度。
夹板组件103被配置为能够沿极片料带的递送方向往复移动，以在极片料带被裁切后松开极片并朝向极片放卷机构移动，以及将未裁切的极片料带进行夹持并朝向入料工位拉动，如此往复，通过夹板组件103和裁切刀具102的配合能够持续地进行极片切割。
可选地，夹板组件103还安装座和驱动缸(图中未示出)，驱动缸与安装座相连接并能够驱动安装座往复移动，第一夹板1030和第二夹板1031与安装座活动连接，以使第一夹板1030和第二夹板1031能够相对靠近或相对远离。
实施例二
实施例二提供了一种叠片系统，该实施例包括实施例一中的极片裁切输送装置，实施例一所公开的极片裁切输送装置的技术特征也适用于该实施例，实施例一已公开的极片裁切输送装置的技术特征不再重复描述。
参见图1至图4所示，本实施例的可选方案中，极片裁切输送装置的数量为两个，两个极片裁切输送装置分别为正极片裁切输送装置10和负极片裁切输送装置11，其中，正 极片裁切输送装置10包括正极片放卷机构105，正极片放卷机构105配置为输送正极片料带100，以使极片裁切机构对其进行裁切以得到正极片107，负极片裁切输送装置11包括负极片放卷机构111，负极片放卷机构111配置为输送负极片料带110，以使极片裁切机构对其进行裁切以得到负极片112。
本实施例中，叠片系统1还包括叠片轨道13和叠片机构14。
叠片轨道13的两端分别设置于两个极片裁切输送装置的出料工位的下方，叠片机构14能够沿叠片轨道13在两个极片裁切输送装置的出料工位之间往复移动，以使两个极片裁切输送装置在叠片轨道13的端部向叠片机构14交替叠放正极片107和负极片112，进而实现正极片107与负极片112的交替堆叠。
本实施例中，叠片机构14包括叠片平台和压板。
叠片平台上设置有至少一个叠片工位，叠片平台与叠片轨道13活动连接，并能够沿叠片轨道13在两个极片裁切输送装置的出料工位之间往复移动，当叠片平台移动至叠片轨道13的端部时，所有叠片工位与出料工位的运料小车106一一对应，以使运料小车106释放的极片一一对应地放置在所有叠片工位上，其中，当叠片工位的数量为多个时，即可实现同时叠置多组极片，进一步提高叠片效率。
压板与叠片平台活动连接，以在运料小车106释放极片时移动至避让极片，并在极片放置在叠片工位后移动至朝向叠片平台压紧极片，通过压板的辅助，能够确保叠放后的极片能够保持在原位，避免在叠片平台往复移动过程中发生移位、变形或者倾倒，有利于提高叠片精度。
可选地，压板与叠片平台活动连接，具体而言，压板可升降或者可伸缩地设置于叠片平台。
本实施例中，叠片轨道13的两端均形成沿上下方向延伸的爬升段，以使运料小车106在爬升段向叠片机构14叠片。具体而言，叠片轨道13的对应于正极片裁切输送装置10的端部形成第一爬升段130，叠片轨道13的对应于负极片裁切输送装置11的端部形成第二爬升段131，第一爬升段130以及第二爬升段131的上端和下端之间的距离均不小于目标叠片厚度，从而确保叠片平台每次在第一爬升段130和第二爬升段131处的停留后，下一层极片能够继续堆叠在已堆叠部分的顶部。
本实施例中，隔膜放卷机构12包括放卷辊120和抽拉辊121，放卷辊120与抽拉辊121配置为张紧并抽动隔膜122。
放卷辊120设置于两个极片裁切输送装置的上方，抽拉辊121设置于两个极片裁切输送装置之间，从而能够确保隔膜122在随着叠片平台往复移动的过程中，隔膜122不会与两个极片裁切输送装置发生空间干涉。
可选地，该叠片系统还包括贴胶机构、热压机构、称重检测以及下料机构等现有的后处理设备，其中，在下料机构中可以将重量不合格的叠片产品进行剔除。
综上，该叠片系统的叠片步骤如下：
正极片裁切输送装置10对正极片107进行裁切和输送，负极片裁切输送装置11对负极片112进行裁切和输送。
正极片裁切输送装置10的出料工位处的至少一个运料小车106均携带有正极片107，叠片平台沿着叠片轨道13移动至第一爬升段130，并在第一爬升段130上停留在压片与至少一个运料小车106所携带的正极片107保持高度平齐的位置，与此同时，至少一个运料小车106的位置分别与叠片平台的至少一个叠片工位一一对应。
将压片移开，压片上方的隔膜122覆盖在上一层负极片112的顶部，所有叠片工位处的已堆叠部分的顶部朝向运料小车106裸露，至少一个运料小车106释放正极片107，从而使得至少一个正极片107一一对应地精准叠放到至少一个叠片工位处，再通过压片对所有叠片工位处的已堆叠部分进行下压定位。
如此，完成一层的正极片107的堆叠工序，叠片平台沿着叠片轨道13运动至第二爬升段131，在此过程中，隔膜122被拉动且在被拉动的过程中，覆盖在压板的顶部，将压板移开后，隔膜122覆盖在上一层正极片107的顶部，进而进行下一层的负极片112的堆叠工序，如此，该层负极片112与上一层正极片107通过隔膜122隔开，该层负极片112的具体堆叠过程与上一层正极片107的堆叠工序同理，在此不再赘述。
完成该层负极片112的叠片工序后，叠片平台沿着叠片轨道13回到第一爬升段130进行下一层的正极片107的叠片操作，如此循环，直至叠片完成得到多组叠片产品，也即电芯。
叠片完成后，每个叠片工位均放置有一组叠片产品，且所有叠片产品的任意一层隔膜均相连接，为了将多组叠片产品分割开来，可以对相邻的叠片工位之间也就是相邻的叠片产品之间的隔膜进行切割，以得到多组独立的叠片产品。
在此上述叠片过程中，如图4所示，如果对于叠片效率的要求并没有很严格，也可以每次仅向叠片平台堆叠一组极片。同时向叠片平台堆叠多组极片的情况下，不仅能够实现多个极片的同时叠片，提高叠片效率。此外，每个极片直接朝向对应的每个叠片工位释放、下落并定位，在此过程中无转运机械手及定位平台，无定位不良，极片转运偏移量小，每个叠片工位均具有更高的对齐度，设备的时间稼动率以及叠片良率均得以显著提升。
本实施例中的叠片系统具有实施例一中的极片裁切输送装置的优点，实施例一所公开的所述极片裁切输送装置的优点在此不再重复描述。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。此外，本领域的技术人员能够理解，尽管在此所述的一些实施例包括其它实施例中所包括的某些特征而不是其它特征，但是不同实施例的特征的组合意味着处于本申请的范围之内并且形成不同的实施例。例如，所要求保护的实施例的任意之一都可以以任意的组合方式来使用。公开于该背景技术部分的信息仅仅旨在加深对本申请的总体背景技术的理解，而不应当被视为承认或以任何形式暗示该信息构成已为本领域技术人员所公知的现有技术。
工业实用性
综上所述，本公开提供了极片裁切输送装置及叠片系统。本公开通过多个运料小车一一对应地定轨运输多个极片，转运效率高，并能够定点释放，极片释放位置精度高，中转流程小，偏移量累积小，转动精度高，从而使得应用该极片裁切输送装置的叠片系统具有极高的叠片效率和叠片精度，即可高效且精准地进行裁片、运输和叠片。

Claims (10)

  1. 一种极片裁切输送装置，其特征在于，包括顺次设置的极片放卷机构、极片裁切机构和极片运输机构；
    所述极片裁切机构配置为将所述极片放卷机构放出的极片料带进行裁片处理以得到极片；
    所述极片运输机构包括环形入料轨道和多个运料小车；
    所述环形入料轨道包括首尾相接的入料段和回流段，所述入料段与所述回流段的首尾相接处分别为入料工位和出料工位，多个所述运料小车均能够经由入料段从入料工位向所述出料工位移动以及经由所述回流段从所述出料工位向所述入料工位移动，以使每个所述运料小车均能够在所述入料工位对所述极片进行拾取并在所述出料工位对所述极片进行释放。
  2. 根据权利要求1所述的极片裁切输送装置，其特征在于，还包括缺陷检测机构，所述缺陷检测机构设置于所述极片裁切机构与所述极片放卷机构之间，以对所述极片料带的表面质量进行检测；
    所述环形入料轨道还包括剔废段，所述剔废段的两端分别与所述入料段的中部和所述回流段的中部相连接；
    所述缺陷检测机构与所述运料小车电连接，以确定所述运料小车携带的所述极片的表面质量是否合格；
    当所述运料小车携带的所述极片的表面质量不合格时，所述运料小车将所述极片运输至所述剔废段并在所述剔废段释放；
    当所述运料小车携带的所述极片的表面合格时，所述运料小车将所述极片运输至所述出料工位。
  3. 根据权利要求2所述的极片裁切输送装置，其特征在于，所述极片裁切机构包括夹板组件和裁切刀具；
    所述夹板组件包括相对间隔设置的第一夹板和第二夹板，所述第一夹板和所述第二夹板能够相对靠近或相对远离以对所述极片料带的自由端进行夹持或放松；
    所述裁切刀具设置于所述夹板组件的靠近所述极片放卷机构的一侧，以在所述夹板组件对所述极片料带进行夹持的过程中裁切所述极片料带并得到所述极片；
    所述夹板组件被配置为能够沿所述极片料带的递送方向往复移动，以在所述极片料带被裁切后松开所述极片并朝向所述极片放卷机构移动，以及将未裁切的所述极片料带进行夹持并朝向所述入料工位拉动。
  4. 根据权利要求1至3中任一项所述的极片裁切输送装置，其特征在于，还包括纠偏机构，所述纠偏机构设置于所述极片裁切机构与所述极片放卷机构之间，以对所述极片料带的放卷轨迹偏差进行检测；
    所述纠偏机构与所述极片放卷机构电连接，以根据所述放卷轨迹偏差调节所述极片放卷机构的位置。
  5. 根据权利要求1至3中任一项所述的极片裁切输送装置，其特征在于，多个所述运料小车以磁悬浮的方式设置于所述环形入料轨道；
    和/或，所述极片运输机构还包括入料辊，所述入料辊与所述入料工位间隔设置以在二者之间形成入料口，所述入料辊能够驱动所述极片进入所述入料口。
  6. 一种叠片系统，其特征在于，包括权利要求1至5中任一项所述的极片裁切输送装置。
  7. 根据权利要求6所述的叠片系统，其特征在于，
    所述极片裁切输送装置的数量为两个，两个所述极片裁切输送装置分别配置为输送正极片和负极片；
    所述叠片系统还包括叠片轨道和叠片机构；
    所述叠片轨道的两端分别设置于两个所述极片裁切输送装置的出料工位的下方，所述叠片机构能够沿所述叠片轨道在两个所述极片裁切输送装置的出料工位之间往复移动，以使两个所述极片裁切输送装置在所述叠片轨道的端部向所述叠片机构交替叠放所述正极片和所述负极片。
  8. 根据权利要求7所述的叠片系统，其特征在于，所述叠片机构包括叠片平台和压板；
    所述叠片平台上设置有至少一个叠片工位，当所述叠片平台移动至所述叠片轨道的端部时，所有所述叠片工位与所述出料工位的所述运料小车一一对应，以使所述运料小车释放的所述极片一一对应地放置在所有所述叠片工位上；
    所述压板与所述叠片平台活动连接，以在所述运料小车释放所述极片时移动至避让所述极片，并在所述极片放置在所述叠片工位后移动至朝向所述叠片平台压紧所述极片。
  9. 根据权利要求7所述的叠片系统，其特征在于，所述叠片轨道的两端均形成沿上下方向延伸的爬升段，以使所述运料小车在所述爬升段向所述叠片机构叠片；
    所述爬升段的上端和下端之间的距离不小于目标叠片厚度。
  10. 根据权利要求7所述的叠片系统，其特征在于，还包括隔膜放卷机构，所述隔膜放卷机构包括放卷辊和抽拉辊，所述放卷辊与所述抽拉辊配置为张紧并抽动隔膜；
    所述放卷辊设置于两个所述极片裁切输送装置的上方，所述抽拉辊设置于两个所述极片裁切输送装置之间。
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