WO2023029646A1 - 剔除装置、极片加工设备以及剔除方法 - Google Patents

剔除装置、极片加工设备以及剔除方法 Download PDF

Info

Publication number
WO2023029646A1
WO2023029646A1 PCT/CN2022/098226 CN2022098226W WO2023029646A1 WO 2023029646 A1 WO2023029646 A1 WO 2023029646A1 CN 2022098226 W CN2022098226 W CN 2022098226W WO 2023029646 A1 WO2023029646 A1 WO 2023029646A1
Authority
WO
WIPO (PCT)
Prior art keywords
pole piece
defective
conveying mechanism
pair
conveying
Prior art date
Application number
PCT/CN2022/098226
Other languages
English (en)
French (fr)
Inventor
张聪
吴志阳
郭益泰
廖如虎
倪大军
文志华
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Publication of WO2023029646A1 publication Critical patent/WO2023029646A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • 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 battery manufacturing, in particular, to a rejecting device, pole piece processing equipment and a rejecting method.
  • New energy vehicles are powered by lithium batteries, which have high requirements for the safety performance of lithium batteries.
  • a continuous pole piece needs to be wound or folded to form an electrode assembly. If the pole pieces with defective sections are used to form the electrode assembly, it will cause quality problems in the pole pieces in the battery, and the battery may be short-circuited during use, which reduces the safety performance of the battery.
  • the application proposes a removing device, pole piece processing equipment and a removing method, which can remove defective segments during the process of conveying the pole pieces, and have less impact on the conveying path of the pole pieces during the process of removing defective segments.
  • the embodiment of the first aspect of the present application proposes a rejecting device for removing defective sections of pole pieces, including: a first conveying mechanism for conveying pole pieces; a cutting mechanism arranged downstream of the first conveying mechanism, It is used to cut the pole piece; the second conveying mechanism includes a pair of first pinch rollers, the second conveying mechanism is switched between the working position and the non-working position, and in the working position, the second The conveying mechanism is located downstream of the cutting mechanism, and the pair of first pinch rollers are used to clamp and convey the defective section of the pole piece. In the non-working position, the second conveying mechanism is not in the On the conveying path of the pole piece.
  • the rejecting device further includes: a collecting mechanism for collecting defective sections of the pole piece; the second conveying mechanism further includes a guide assembly, and the guide assembly is located at the pair of first On the discharge side of a pinch roller, the guide assembly is used to guide the defective section of the pole piece to the collection mechanism.
  • a guide assembly is arranged downstream of the pair of first clamping rollers, which can change the discharge direction of the defective section of the pole piece, so that the defective section of the pole piece enters the collection mechanism, effectively collects the defective section, and keeps the processing environment of the pole piece clean.
  • the guide assembly includes a pair of guide plates, and there is a gap between the pair of guide plates for the defective segment of the pole piece to pass through.
  • the two sides of a pair of guide plates that are close to each other are used to guide the defective section of the pole piece to move forward, thereby stably guiding the defective section of the pole piece into the collection mechanism and avoiding the failure of the pole piece
  • the defective segments fall out of the collection mechanism, which leads to a messy pole piece processing environment.
  • the second conveying mechanism further includes a first driving unit configured to drive one of the pair of first pinch rollers to rotate.
  • One of the pair of first pinch rollers can be driven to rotate by the first drive unit.
  • the pair of first pinch rollers clamp the defective section of the pole piece along the thickness direction of the pole piece, the One of them rotates actively, the other rotates drivenly, and a pair of first clamping rollers jointly transport the defective section of the pole piece.
  • the second delivery mechanism further includes a first bracket, a second bracket and a first elastic member
  • the first drive unit is installed on the first bracket
  • One of the pinch rollers is installed on the first bracket, and the other is installed on the second bracket
  • the first bracket and the second bracket are arranged along a direction perpendicular to the axial direction of the first pinch roller. direction sliding connection
  • the first elastic member is arranged between the first bracket and the second bracket, so that the pair of first pinch rollers tend to approach each other.
  • the first elastic member is arranged between the first bracket and the second bracket, so that a pair of first pinch rollers elastically press the defective section of the pole piece, and can adapt to the gap between the thickness of the pole piece and the pair of first pinch rollers The difference can control the pressing force of a pair of first clamping rollers on the pole piece when the pole piece is too thick, so as to avoid the pole piece from being broken due to excessive extrusion of the pole piece.
  • the collection mechanism includes: a material receiving box, used to accept the defective section of the pole piece; a collection box, used to collect the defective section of the pole piece; switch between a material receiving position and a material discharging position, in the material receiving position, the material receiving box is configured to receive the defective segment of the pole piece conveyed by the second conveying mechanism, in the material discharging position, The receiving box is configured to discharge the defective section of the pole piece into the collecting box.
  • the material receiving box can accept the defective section of the pole piece conveyed by the second conveying mechanism, and the material receiving box can discharge the accumulated defective section of the pole piece into the collection box, which is convenient for the unloading of the defective section, so that the material receiving box has There is enough space to receive the defective section of the pole piece conveyed by the second conveying mechanism.
  • the discharge direction of the second conveying mechanism is set downward, and the The receiving box is located below the second conveying mechanism.
  • the second conveying mechanism discharges material downwards, and the material receiving box is located under the second conveying mechanism to receive materials, so that the conveying direction of the defective section of the pole piece is the same or similar to the direction of gravity, which can reduce the impact of gravity on the defective section of the pole piece.
  • the rejecting device further includes: a frame; wherein, the second conveying mechanism is slidably installed on the frame along the first direction to achieve Switching of the working position, the receiving box is slidably installed on the frame along the second direction to realize switching between the receiving position and the discharging position, the first direction is perpendicular to the second The axial direction of a pinch roller, the second direction is parallel to the axial direction of the first pinch roller.
  • the moving direction of the second conveying mechanism and the moving direction of the material receiving box are perpendicular to each other, which can shorten the moving stroke of the second conveying mechanism and the material receiving box, facilitates assembly, and can also occupy a small space.
  • the material receiving box includes: a box body, the upper end of the box body is open, and the lower end of the box body has a discharge port; a closing plate is movably connected to the box body; the second An elastic member, the two ends of the second elastic member are respectively connected with the box body and the closing plate, and are used to keep the closing plate at the position of closing the discharge port; the collecting mechanism also includes: The second driving unit is installed on the frame and is used to drive the closing plate to open when the receiving box moves to the discharging position.
  • the closing plate can be opened by using the second driving unit to remove the defective sections accumulated in the receiving box; the second elastic member drives the closing plate to move to abut against the box body through elastic force after the second driving unit unloads to close
  • the discharge port and the material receiving box will not leak material during the process of receiving the defective section of the pole piece conveyed by the second conveying mechanism.
  • the frame includes: a mounting plate, the thickness direction of the mounting plate extends along the second direction, and the two sides of the mounting plate along the thickness direction are respectively a first side and a second side. Two sides; the first conveying mechanism, the cutting mechanism and the second conveying mechanism are all arranged on the first side; when the material receiving box is located at the material receiving position, the material receiving box Located on the first side, when the material receiving box is located at the discharge position, the material receiving box is located on the second side.
  • the first conveying mechanism, the cutting mechanism and the second conveying mechanism all convey the pole piece and its defective section on the first side, and the receiving box only moves to the first side to receive the defective section when the second conveying mechanism conveys the defective section.
  • the non-defective segment is removed, it is stored on the second side to provide more space for the first side, which is convenient for the movement of the cutting mechanism and other components on the first side.
  • the rejecting device further includes: a detection mechanism for detecting whether there is a defective segment in the pole piece and sending a first rejecting signal representing the starting position of the defective segment of the pole piece and representing a second reject signal of the termination position of the defective segment of the pole piece; the cutting mechanism is configured to cut off the pole piece in response to the first reject signal, and to cut off the pole piece again in response to the second reject signal ; the second delivery mechanism is configured to respond to the first reject signal and move to the working position, and respond to the second reject signal and move to the non-working position.
  • the use of the detection mechanism can detect whether there is a defective segment in the pole piece and further determine the starting position and end position of the defective segment. According to the detection result of the detection mechanism, the cutting mechanism can cut the defective segment twice during the conveying process of the pole piece. Separated from the pole piece, the second conveying mechanism can only move to the working position when the defective segment needs to be removed, and is retracted in the non-working position to avoid the conveying path of the pole piece when the defective segment does not need to be removed. The cutting mechanism and the second conveying mechanism can automatically operate according to the detection result of the detection mechanism, so as to automatically perform the rejecting action.
  • the embodiment of the second aspect of the present application proposes a pole piece processing equipment, and the pole piece processing equipment includes:
  • the rejecting device provided by the embodiment of the first aspect
  • the lamination device is used to thermally laminate the pole piece and the separator, and is arranged downstream of the cutting mechanism.
  • the second conveying mechanism is located at the Between the cutting mechanism and the laminating device.
  • the downstream of the cutting mechanism is provided with a laminating device.
  • the pole piece passes through the first conveying mechanism, the cutting mechanism and the laminating device in sequence along the conveying path; when there is a defective section in the pole piece, the cutting The mechanism cuts one end of the defective section of the pole piece, and the second conveying mechanism moves between the cutting mechanism and the laminating device, and the defective section of the pole piece enters the second conveying mechanism, and is rejected by the second conveying mechanism to avoid The pole piece of the defective section enters the laminating device to be laminated with the diaphragm, resulting in quality problems in the formed electrode assembly.
  • the embodiment of the third aspect of the present application proposes a removal method for removing defective segments of pole pieces, the removal method comprising:
  • the pair of first pinch rollers are moved away from the conveying path of the pole piece.
  • a pair of first pinch rollers is used to move to the conveying path of the pole piece, and the pole piece enters between the pair of first pinch rollers, and the pair of first pinch rollers clamp and convey Defective section: After the defective section is removed from the pole piece, a pair of first clamping rollers are moved away from the conveying path of the pole piece to avoid the conveying path of the pole piece.
  • the defective segment be removed from the conveyed pole piece, but also the defective section of the pole piece can be transported without causing the pole piece to shift along the width direction from the original conveying path, thereby reducing the need for Due to the influence of the conveying path of the pole piece, it is not necessary to correct the deviation of the pole piece again after removing the defective section, which improves the conveying efficiency of the pole piece.
  • Figure 1 shows a schematic diagram of a first state of a form of pole piece processing equipment in some embodiments of the present application
  • Figure 2 shows a schematic diagram of a second state of a form of pole piece processing equipment in some embodiments of the present application
  • Fig. 3 shows a schematic diagram of a third state of a form of pole piece processing equipment in some embodiments of the present application
  • Figure 4 shows a schematic diagram of another form of pole piece processing equipment in some embodiments of the present application.
  • Fig. 5 shows a schematic structural view of the second conveying mechanism in some embodiments of the present application
  • Figure 6 shows a schematic structural view of a rejecting device in some embodiments of the present application.
  • FIG. 7 shows is the partial enlarged view of place A in Fig. 6;
  • Figure 8 shows a schematic structural view of a collection mechanism in some embodiments of the present application.
  • FIG. 9 shows is the partial enlarged view of place B in Fig. 8.
  • Figure 10 shows a side view of the rejecting device in the embodiment of the present application when it is in the first state
  • Figure 11 shows a side view of the rejecting device in the embodiment of the present application when it is in the second state
  • Figure 12 shows a schematic diagram of another form of pole piece processing equipment in some embodiments of the present application.
  • Figure 13 shows a flow chart of the steps of the elimination method in some embodiments of the present application.
  • Icon 1000-pole piece processing equipment; 100-rejecting device; 110-first conveying mechanism; 111-second pinch roller; 120-cutting mechanism; 130-second conveying mechanism; 131-first pinch roller; 131a-driving roller; 131b-driven roller; 132-guiding assembly; 1321-first guiding plate; 1322-second guiding plate; 1323-first guiding part; 1324-second guiding part; 133-first driving unit ; 134-first bracket; 135-second bracket; 136-first elastic member; 140-collection mechanism; Closing plate; 1413-second elastic member; 142-collecting box; 143-second drive unit; 144-fourth drive unit; 1441-motor; 1442-gear; 1443-rack; 150-frame; 151- Mounting plate; 1511-first side; 1512-second side; 1513-through hole; 152-third bracket; 160-detection mechanism; 170-third drive unit; Roller; 2000-pole piece; 2100-pole piece body; 2200-de
  • connection should be understood in a broad sense unless otherwise clearly specified and limited, for example, it can be a fixed connection or a Detachable connection, or integral connection; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication of two components.
  • connection can be a fixed connection or a Detachable connection, or integral connection; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication of two components.
  • “Plurality” in this application refers to two or more (including two).
  • the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, which are not limited in the embodiments of the present application.
  • the battery cell can be in the form of a cylinder, a flat body, a cuboid or other shapes, which is not limited in this embodiment of the present application.
  • Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and pouch battery cells.
  • the battery cell includes an electrode assembly and an electrolyte, and the electrode assembly is composed of a positive pole piece, a negative pole piece and a separator.
  • a battery cell works primarily by moving metal ions between the positive and negative pole pieces.
  • the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer, the positive electrode active material layer is coated on the surface of the positive electrode current collector, and the positive electrode collector without the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. Fluid, the positive electrode current collector not coated with the positive electrode active material layer is used as the positive electrode tab.
  • the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium or lithium manganate.
  • the negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer is coated on the surface of the negative electrode current collector, and the negative electrode collector without the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. Fluid, the negative electrode current collector not coated with the negative electrode active material layer is used as the negative electrode tab.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • the number of positive pole tabs is multiple and stacked together, and the number of negative pole tabs is multiple and stacked together.
  • the material of the isolation film may be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene).
  • the electrode assembly may be a wound structure or a laminated structure, which is not limited in the embodiment of the present application.
  • the pole piece travels along the conveying path. After detecting the defective section of the pole piece, it is necessary to cut the pole piece, lead the defective section of the pole piece from the original conveying path, and cut the pole piece again to connect the defective section with the pole piece. Separation, and continue to convey the pole pieces along the original conveying path.
  • this application proposes a new technical solution, which can remove defective segments during the process of conveying the pole pieces, and has less impact on the conveying path of the pole pieces during the process of removing defective sections, and will not cause the pole pieces to be damaged.
  • the position offset in the width direction can continue to transport the pole piece along the original conveying path after removing the defective section, which saves the deviation correction process and improves the conveying efficiency of the pole piece.
  • FIG. 1 , FIG. 2 and FIG. 3 are respectively schematic diagrams showing three states of pole piece processing equipment in some embodiments of the present application.
  • some embodiments of the present application propose a pole piece processing equipment 1000 , including a rejecting device 100 and a laminating device 200 .
  • the rejecting device 100 includes a first conveying mechanism 110 , a cutting mechanism 120 and a second conveying mechanism 130 .
  • the first conveying mechanism 110 is used for conveying the pole piece, and the cutting mechanism 120 is arranged downstream of the first conveying mechanism 110 for cutting the pole piece 2000 .
  • the second conveying mechanism 130 switches between a working position and a non-working position.
  • the second conveying mechanism 130 is not on the conveying path X of the pole piece 2000 .
  • the lamination device 200 is used for heat lamination of the pole piece 2000 and the separator 3000 , and the lamination device 200 is disposed downstream of the cutting mechanism 120 .
  • the second conveying mechanism 130 is located downstream of the cutting mechanism 120 and conveys the defective segment 2200 of the pole piece 2000 , and the second conveying mechanism 130 is located between the cutting mechanism 120 and the laminating device 200 .
  • the cutting mechanism 120 is arranged downstream of the first conveying mechanism 110" means that along the conveying path X of the pole piece 2000, the first conveying mechanism 110 and the cutting mechanism 120 are arranged in sequence, and the pole piece 2000 is conveyed During the process, the process passes through the first conveying mechanism 110 and the cutting mechanism 120 in sequence.
  • the pole piece 2000 is one of the raw materials for forming the electrode assembly of the battery cell.
  • the pole piece 2000 includes the pole piece body 2100 and the defective segment 2200. Carry out cutting to form the first end 2210 of the defective segment 2200, at this time the defective segment 2200 is connected with the pole piece body 2100 as a whole; the pole piece 2000 is cut at the termination position of the defective segment 2200 to form the second end of the defective segment 2200 end 2220, and separate the defective segment 2200 from the pole piece body 2100.
  • the rejecting device 100 can also be used to reject defective sections of other types of material tapes, such as diaphragm material tapes, composite material tapes, and the like.
  • the first conveying mechanism 110 includes a pair of second clamping rollers 111 , and the pair of second clamping rollers 111 is used to clamp and convey the pole piece 2000 along the conveying path X.
  • the laminating device 200 includes a pair of third pinch rollers 210, and there is a gap between the pair of third pinch rollers 210, and the pole piece 2000 and the two-layer separator 3000 enter between the pair of third pinch rollers 210 along the conveying path X
  • the two-layer separator 3000 is located on both sides of the pole piece 2000 along the thickness direction, and the pole piece 2000 and the two-layer separator 3000 are thermally laminated by the laminating device 200 to form an integrated composite material belt, which is used to form electrodes components.
  • the laminating device 200 can also heat-laminate the pole piece 2000 and a layer of separator 3000.
  • the rejecting device 100 includes a first conveying mechanism 110 , a cutting mechanism 120 and a second conveying mechanism 130 .
  • the first conveying mechanism 110 is used to convey the pole piece;
  • the cutting mechanism 120 is arranged downstream of the first conveying mechanism 110, and is used for cutting the pole piece 2000;
  • the second conveying mechanism 130 includes a pair of first clamping rollers 131, the second The conveying mechanism 130 switches between a working position and a non-working position.
  • the second conveying mechanism 130 In the working position, the second conveying mechanism 130 is located downstream of the cutting mechanism 120, and a pair of first clamping rollers 131 are used to clamp and convey the defective section 2200 of the pole piece 2000; in the non-working position, the second conveying mechanism 130 is not in On the transport path X of the pole piece 2000.
  • the "transport path X of the pole piece 2000” refers to the continuous trajectory formed by a certain point of the pole piece 2000 during the travel of the pole piece 2000; when considering the width of the pole piece 2000 , the conveying path X is a continuous belt track.
  • a pair of first pinch rollers 131 and a pair of second pinch rollers 111 are arranged in parallel and have the same specifications.
  • the pole piece 2000 can be conveyed synchronously. , will not cause the pole piece 2000 to wrinkle or shift.
  • the pair of second pinch rollers 111 can stop running, so as to save the first pinch roller 131 and the second pinch roller. Steps for adjusting the rotational speed of the second pinch roller 111.
  • the cutting mechanism 120 can cut the pole piece 2000 at a fixed position, or can move synchronously with the pole piece 2000 and cut the pole piece 2000 in the form of tracking. Especially when the cutting mechanism 120 cuts the pole piece 2000 in the form of chasing cutting, the cutting mechanism 120 needs a large space to realize the chasing cutting action. It is also possible to set the second conveying mechanism 130 to switch between the working position and the non-working position. Provide enough space for the cutting mechanism 120 to implement the chasing action.
  • a pair of first clamping rollers 131 are moved to the working position, and the first clamping rollers 131 can act on the pole piece 2000 evenly along the width direction of the pole piece 2000, thereby At the same time, the defective segment 2200 of the pole piece 2000 will not cause the pole piece 2000 to deviate from the original conveying path X along the width direction, thereby reducing the impact on the conveying path X of the pole piece 2000 .
  • Using the removing device 100 to remove the defective section 2200 of the pole piece 2000 does not need to rectify the pole piece again after removing the defective section 2200 , which improves the conveying efficiency of the pole piece 2000 .
  • Fig. 4 shows a schematic diagram of another form of pole piece processing equipment 1000 in some embodiments of the present application.
  • the rejecting device 100 also includes a collection mechanism 140 for collecting the defective section 2200 of the pole piece 2000; On the discharge side, the guide assembly 132 is used to guide the defective segment 2200 of the pole piece 2000 to the collecting mechanism 140 .
  • the guide assembly 132 can change the discharge direction of the defective section 2200 of the pole piece 2000 conveyed by the first pinch roller 131, so that the defective section 2200 of the pole piece 2000 can be conveyed in a direction close to the collection mechanism 140; the guide assembly 132 can also not change the first The discharge direction of the defective section 2200 of the conveying pole piece 2000 of a pinch roller 131 is extended along the original discharge direction to guide the defective section 2200 of the pole piece 2000, and the collection mechanism 140 moves to the conveying path X of the pole piece 2000 and is transported in the second The defective segment 2200 is collected downstream of the mechanism 130 .
  • the collection mechanism 140 can be fixedly installed, and the discharge direction of the defective section 2200 of the pole piece 2000 can be changed through the guide assembly 132, so as to guide the defective section 2200 of the pole piece 2000 to the collection mechanism 140; the collection mechanism 140 can also only remove the pole piece 2000 when it is necessary When the defective segment 2200 is moved to the downstream of the guide assembly 132 and the defective segment 2200 is collected.
  • a guide assembly 132 is provided downstream of the pair of first clamping rollers 131, which can change the discharge direction of the defective section 2200 of the pole piece 2000, so that the defective section 2200 of the pole piece 2000 enters the collection mechanism 140, effectively collects the defective section 2200, and maintains The pole piece processing environment is clean.
  • the guide assembly 132 includes a pair of guide plates, and there is a gap between the pair of guide plates for the defective segment 2200 of the pole piece 2000 to pass through.
  • Fig. 5 shows a schematic structural diagram of the second conveying mechanism in some embodiments of the present application.
  • a pair of guide plates are respectively the first guide plate 1321 and the second guide plate 1322, a gap is formed between the first guide plate 1321 and the second guide plate 1322, and the first guide plate
  • the plate 1321 and the second guide plate 1322 act on the defective section 2200 of the pole piece 2000 from both sides of the defective section 2200 of the pole piece 2000 to stably and reliably guide the defective section 2200 of the pole piece 2000 to be transported toward the collecting mechanism 140 .
  • the two ends of the guide assembly 132 along the conveying direction further include a first guide part 1323 and a The second guide part 1324, the extension direction of the first guide part 1323 is the same as the discharge direction of the pair of first pinch rollers 131, the extension direction of the second guide part 1324 is towards the collection mechanism 140, so as to change the defective section of the pole piece 2000 2200 is the conveying direction after being conveyed by the second conveying mechanism 130 .
  • the guide assembly 132 can be fixed on the discharge side of the pair of first pinch rollers 131 in various forms.
  • the guide assembly 132 and the first pinch roller 131 can both be installed on a common bracket, and move to the working position synchronously driven by the bracket; the guide assembly 132 and a pair of first pinch rollers 131 can also be installed on a bracket respectively.
  • the guide assembly 132 may also include only one guide plate, and one guide plate is used to guide the defective segment 2200 of the pole piece 2000 into the collecting mechanism 140 .
  • the two sides of a pair of guide plates that are close to each other are used to guide the defective section 2200 of the pole piece 2000 to advance, thereby stably guiding the defective section 2200 of the pole piece 2000 to enter
  • the collection mechanism prevents the defective section 2200 of the pole piece 2000 from falling out of the collection mechanism 140, and the defective section 2200 cannot be collected effectively, resulting in a messy pole piece processing environment.
  • the second conveying mechanism 130 further includes a first driving unit 133 for driving one of the pair of first pinch rollers 131 to rotate.
  • one of a pair of first pinch rollers 131 is a driving roller 131a, and the other is a driven roller 131b, and the driving roller 131a and the first pinch roller 131b are
  • the output end of a driving unit 133 is connected by transmission and rotates under the driving of the first driving unit 133.
  • the driven roller 131b and the driving roller 131a jointly clamp the defective segment 2200 of the pole piece 2000, and passively rotate during the process of conveying the pole piece 2000 .
  • each first driving unit 133 drives one first pinch roller 131 , so that a pair of first pinch rollers 131 rotate synchronously and in opposite directions.
  • the first driving unit 133 can be a motor belt assembly, or a motor gear assembly; the first driving unit 133 and the pair of first pinch rollers 131 can be installed on a common bracket, or can be installed on a bracket respectively.
  • One of the pair of first clamping rollers 131 can be driven to rotate by the first driving unit 133.
  • the pair of first clamping rollers 131 clamp the defective segment 2200 of the pole piece 2000 along the thickness direction of the pole piece
  • the pair of first clamping rollers 131 One of the pinch rollers 131 is actively rotating, and the other is driven to rotate, and the pair of first pinch rollers 131 jointly transport the defective segment 2200 of the pole piece 2000 .
  • the second conveying mechanism 130 also includes a first bracket 134, a second bracket 135 and a first elastic member 136, a first drive unit 133 is mounted on the first bracket 134, and a pair of first pinch rollers 131 One of them is installed on the first bracket 134, and the other is installed on the second bracket 135.
  • the first bracket 134 and the second bracket 135 are slidably connected in a direction perpendicular to the axial direction of the first pinch roller 131.
  • the first elastic member 136 is disposed between the first bracket 134 and the second bracket 135 so that the pair of first pinch rollers 131 tend to approach each other.
  • the pair of first clamping rollers 131 can rigidly clamp the defective section 2200 of the pole piece 2000, and can also elastically clamp the pole piece The defective section 2200 of 2000; when a pair of first clamping rollers 131 elastically clamp the defective section 2200 of the pole piece 2000, the driving roller 131a and the driven roller 131b can be respectively elastically pressed against the surface of the defective section 2200 of the pole piece 2000, It may also be that one of the driving roller 131 a and the driven roller 131 b is elastically pressed against the surface of the defective section 2000 of the pole piece 2000 , and the other is rigidly pressed against the surface of the defective section 2200 of the pole piece 2000 .
  • one of the driving roller 131a and the driven roller 131b is elastically pressed against the surface of the defective segment of the pole piece 2000, and the other is rigidly pressed against the surface of the defective section 2200 of the pole piece 2000
  • the surface of the defective segment 2200 of the pole piece 2000 can be pressed elastically by using the driving roller 131a or the driven roller 131b.
  • a preferred embodiment is that the driving roller 131a is installed on the first bracket 134, the driven roller 131b is installed on the second bracket 135, and the first pinch roller 131 elastically pressing the surface of the defective segment 2200 of the pole piece 2000 is from
  • the driving roller 131b moves the first driving unit 133 and the first elastic member 136 in a direction perpendicular to the axial direction of the first clamping roller 131, the driving roller 131a is used to drive the defective segment 2200 of the pole piece 2000, and the driven roller 131b is used to elastically press the surface of the defective segment 2200 of the pole piece 2000 .
  • the first guide plate 1321 corresponds to the driving roller 131a
  • the second guide plate 1322 corresponds to the driven roller 131b.
  • the first guide plate 1321 is installed on the first bracket 134
  • the second guide plate 1322 can be installed on the second bracket 135 so as to follow the driven roller 131b to move along the direction perpendicular to its axial direction, or it can be fixedly installed on the first bracket 131b.
  • the gap between the bracket 134 and the first guide plate 1321 and the second guide plate 1322 is fixed.
  • the first elastic member 136 can be provided in multiples, and the plurality of first elastic members 136 are arranged at intervals along the axial direction of the driven roller 131b, and the two ends of each first elastic member 136 abut against the first support 134 and the second support. Between 135.
  • the first elastic member 136 can be a straight spring, a guide spring, or an air cylinder.
  • the first elastic member 136 is arranged between the first support 134 and the second support 135, so that a pair of first clamping rollers 131 elastically press the defective section 2200 of the pole piece 2000, and can adapt to the thickness of the pole piece 2000 and a pair of first The difference in the gap between the pinch rollers 131 can control the pressing force of a pair of first pinch rollers 131 on the pole piece 2000 when the pole piece 2000 is too thick, so as to avoid causing the pole piece to 2000 breaks.
  • Fig. 6 shows a schematic structural view of a rejecting device in some embodiments of the present application
  • Fig. 7 shows a partial enlarged view of A in Fig. 6 .
  • the collection mechanism 140 includes a material receiving box 141 and a material collecting box 142 , the material receiving box 141 is used to receive the defective section 2200 of the pole piece 2000 , and the material collecting box 142 is used to collect the defects of the pole piece 2000 Section 2200; the receiving box 141 is switched between the receiving position and the discharging position.
  • the receiving box 141 is configured to accept the defective segment 2200 of the pole piece 2000 conveyed by the second conveying mechanism 130.
  • the receiving box 141 is configured to discharge the defective section 2200 of the pole piece 2000 into the collecting box 142 .
  • the receiving box 141 is switched between the receiving position and the discharging position, so as to accept the defective segment 2200 of the pole piece 2000 at the receiving position, and discharge the defective segment 2200 of the pole piece 2000 into the collecting box 142 at the discharging position .
  • the material receiving box 141 can be positioned on the upper side of the collecting box 142, and the defective section 2200 of the pole piece 2000 falls into the collecting box 142 under the action of gravity;
  • the lower side or one side in the horizontal direction of the box 142 collects the defective segment 2200 of the pole piece 2000 in the form of suction.
  • the collection mechanism 140 may also only include the material receiving box 141 , and the material receiving box 141 is ensured to effectively receive the defective segment 2200 by regularly emptying the material receiving box 141 .
  • the rejecting device 100 also includes a third drive unit 170, and the third drive unit 170 is used to drive the first support 134 to move, so that the second conveying mechanism 130 is between the working position and the non-working position. switch.
  • the third drive unit 170 may be a linear drive unit such as a linear cylinder, a motor belt assembly, or the like.
  • the material receiving box 141 can accept the defective section 2200 of the pole piece 2000 conveyed by the second conveying mechanism 130, and the material receiving box 141 can unload the accumulated defective section 2200 of the pole piece 2000 into the collection box 142, so as to facilitate the defective section 2200 unloading, to prevent the defective section 2200 from filling up the receiving box 141.
  • the second conveying mechanism 130 moves to the working position and transports the defective section 2200 of the pole piece 2000, and the material receiving box 141 moves to the material receiving position and accepts the output of the second conveying mechanism 130 After the defective section 2200 of the pole piece 2000 is separated from the pole piece body 2100 , the defective section 2200 falls into the receiving box 141 .
  • the material receiving box 141 and the second conveying mechanism 130 may also have other positional relationships.
  • the receiving box 141 may be located on the upper side or one side of the second conveying mechanism 130 in the horizontal direction, and receive the defective segment 2200 of the pole piece 2000 by means of suction.
  • the second conveying mechanism 130 discharges material downwards, and the material receiving box 141 is located at the bottom of the second conveying mechanism 130 to receive materials, so that the conveying direction of the defective segment 2200 of the pole piece 2000 is the same or close to the direction of gravity, and the weight of the pole piece 2000 can be reduced.
  • the deflection of the defective segment 2200 due to the influence of gravity further reduces the influence of the rejecting process of the defective segment 2200 on the conveying path of the pole piece 2000 .
  • the rejecting device 100 further includes a frame 150; wherein, the second conveying mechanism 130 is slidably installed on the frame 150 along the first direction P to realize Switching between the working position and the non-working position, the receiving box 141 is slidably installed on the frame 150 along the second direction Q to realize switching between the receiving position and the discharging position, and the first direction P is perpendicular to the first pinch roller 131 , the second direction Q is parallel to the axial direction of the first pinch roller 131 .
  • the first direction P can be a vertical direction
  • the second direction Q can be a horizontal direction, which is not only beneficial to assembly, but also can shorten the moving stroke of the second conveying mechanism 130 and the receiving box 141; based on the implementation that the second direction Q is a horizontal direction
  • the first direction P may also be other directions that are perpendicular to the second direction Q and inclined to the vertical direction.
  • the moving direction of the second conveying mechanism 130 and the moving direction of the material receiving box 141 are perpendicular to each other, which can shorten the moving stroke of the second conveying mechanism 130 and the material receiving box 141, which is convenient for assembly and can occupy less space.
  • FIG. 8 shows a schematic structural view of the collecting mechanism in some embodiments of the present application
  • FIG. 9 is a partial enlarged view of B in FIG. 8 .
  • the material receiving box 141 includes a box body 1411, a closing plate 1412 and a second elastic member 1413, the upper end of the box body 1411 is open, and the lower end of the box body 1411 has a discharge port 14112, closed
  • the plate 1412 is movably connected to the box body 1411 ; the two ends of the second elastic member 1413 are respectively connected to the box body 1411 and the closing plate 1412 for keeping the closing plate 1412 at the position of closing the discharge port 14112 .
  • the collection mechanism 140 also includes a second driving unit 143 installed on the frame 150 and used to drive the closing plate 1412 to open when the receiving box 141 moves to the discharge position.
  • the upper end of the box body 1411 has an open feeding port 14111 , and the lower end has a closable discharging port 14112 .
  • one side edge in the length direction of the closing plate 1412 is rotatably connected to the lower end of the box body 1411 through a hinge or a rotating shaft.
  • Part of the edge of the opening 14112 is located outside the box body 1411 , and the part of the closing plate 1412 located outside the box body 1411 is used to connect with the second elastic member 1413 , and can also cooperate with the output end of the second drive unit 143 .
  • One end of the second elastic member 1413 is connected to the frame 150 , and the other end is connected to the part of the closing plate 1412 outside the box body 1411 to drive the closing plate 1412 to rotate relative to the box body 1411 to close the discharge port 14112 .
  • the second elastic member 1413 can be a straight spring or an air cylinder.
  • the second drive unit 143 may be a linear drive mechanism such as an air cylinder or a hydraulic push rod.
  • the output end of the second driving unit 143 can act on the part inside the box body 1411 of the closing plate 1412, and can also act on the part outside the box body 1411 of the closing plate 1412; the output end of the second driving unit 143 can directly It abuts against the closing plate 1412, and may also be hinged with the closing plate 1412 through a connecting rod.
  • the second elastic member 1413 is connected to the part of the closure plate 1412 outside the box body 1411, and the second drive unit 143 on the same side acts on the part of the closure plate 1412 outside the box body 1411.
  • the part inside the body 1411 is hinged with the closing plate 1412 through a connecting rod (not shown in the figure).
  • the collection mechanism 140 also includes a fourth drive unit 144, and the fourth drive unit 144 is configured to drive the material receiving box 141 to move, so that the material receiving box 141 is in the material receiving position and the discharging position. switch between feed positions.
  • the fourth drive unit 144 can be in the form of a motor cooperating with a rack, or can be a common linear drive such as a linear cylinder.
  • the fourth driving unit 144 includes a motor 1441 , a gear 1442 and a rack 1443
  • the rejecting device 100 also includes a frame 150 .
  • the box body 1411 of the receiving box 141 is slidably matched with the frame 150 along the second direction Q, the box body 1411 is provided with a rack 1443 extending along the second direction Q, the motor is fixed on the frame 150, and the output end of the motor 1441 is provided with
  • the gear 1442 is meshed with the rack 1443 , and the motor 1441 drives the gear 1442 to rotate, so as to drive the box body 1411 to move along the second direction Q.
  • the second elastic member 1413 drives the closure plate 1412 to move to the same position as the second drive unit 143 after the second drive unit 143 is unloaded.
  • the box body 1411 abuts to close the discharge port 14112 , and the receiving box 141 will not leak material during the process of accepting the defective section 2200 of the pole piece 2000 delivered by the second delivery mechanism 130 .
  • Fig. 10 and Fig. 11 respectively show the side views of the rejecting device in the embodiment of the present application in two states.
  • the frame 150 includes a mounting plate 151, the thickness direction of the mounting plate 151 extends along the second direction Q, and the two sides of the mounting plate 151 along its thickness direction are respectively a first side 1511 and a second side 1512 .
  • the first conveying mechanism 110, the cutting mechanism 120 and the second conveying mechanism 130 are all arranged on the first side 1511; When the box 141 is at the discharge position, the receiving box 141 is located at the second side 1512 .
  • the first side 1511 of the mounting plate 151 is used for transporting the pole piece 2000
  • the second side 1512 is used for arranging components such as the collecting box 142 , the second driving unit 143 , the third driving unit 170 and the fourth driving unit 144 .
  • the frame 150 also includes a third support 152, the third support 152 is arranged on the second side 1512 of the mounting plate 151, the mounting plate 151 is provided with a via hole 1513 (as shown in Figure 7), and the via hole 1513 is used for supplying the receiving box 141 passes through the mounting plate 151 along the second direction Q to switch between the material receiving position and the material discharging position.
  • the second driving unit 143 is installed on the third support 152, and the output end of the second driving unit 143 acts on the closing plate 1412 only when the box body 1411 is in the discharge position; the second driving unit 143 can also be installed on the box body 1411, following The box body 1411 moves synchronously.
  • the first conveying mechanism 110, the cutting mechanism 120 and the second conveying mechanism 130 all convey the pole piece 2000 and its defective segment 2200 on the first side 1511, and the receiving box 141 only moves to when the second conveying mechanism 130 conveys the defective segment 2200
  • the first side 1511 is used to receive the defective segment 2200 , and is retracted on the second side 1512 when the non-defective segment 2200 is removed, providing more space for the first side 1511 to facilitate the movement of components such as the cutting mechanism 120 on the first side 1511 .
  • Fig. 12 is a schematic diagram of another form of pole piece processing equipment in some embodiments of the present application.
  • the rejecting device 100 also includes a detection mechanism 160, which is used to detect whether there is a defective segment 2200 in the pole piece 2000 and send a first rejecting signal representing the initial position of the defective segment 2200 of the pole piece 2000 and a representative pole piece 2000.
  • the second reject signal of the termination position of the defective segment 2200 is configured to respond to the first reject signal and cut off the pole piece 2000, and to cut off the pole piece again in response to the second reject signal;
  • the second conveying mechanism 130 is configured to respond to the first reject signal and move to the working position, and respond to The second rejects the signal and moves to the non-working position.
  • the detection mechanism 160 can be a CCD camera, which detects whether there is a defective section in the pole piece 2000 through color difference detection, or a distance measuring sensor, which can identify whether there is a defective section 2200 in the pole piece 2000 by detecting the coating thickness of the pole piece 2000 .
  • the cutting mechanism 120 executes the cutting action in response to the first rejecting signal and the second rejecting signal, it can cut the pole piece when the starting position and the ending position of the defective segment 2200 respectively pass through the cutting mechanism 120, and it can also be considered to form a
  • the first conveying mechanism 110 can also stop running after the second conveying mechanism 130 clamps and conveys the defective section of the pole piece 2000, responds to the second reject signal and continues to convey the pole piece 2000, so that only one conveying mechanism operates on the pole piece 2000 , to avoid the pole piece 2000 being arched or torn due to the speed difference between the two conveying mechanisms.
  • the detection mechanism 160 can detect whether there is a defective segment 2200 in the pole piece 2000 and further determine the starting position and the end position of the defective segment 2200. According to the detection result of the detection mechanism 160, the cutting mechanism 120 can pass through the Two cuts separate the defective segment 2200 from the pole piece body 2100, and the second conveying mechanism 130 can only move to the working position when the defective segment 2200 needs to be removed, and it can be stored in the non-working position to avoid when the defective segment 2200 needs to be removed.
  • the transport path X of the pole piece 2000 The cutting mechanism 120 and the second conveying mechanism 130 can operate automatically according to the detection result of the detection mechanism 160, so as to automatically perform the rejecting action.
  • some embodiments of the present application propose a pole piece processing equipment 1000 , and the pole piece processing equipment 1000 includes a rejecting device 100 and a laminating device 200 .
  • the lamination device 200 is used to thermally laminate the pole piece 2000 and the separator 3000, and is arranged downstream of the cutting mechanism 120.
  • the second conveying mechanism 130 is in the working position, the second conveying mechanism 130 is located between the cutting mechanism 120 and the laminating between devices 200.
  • a laminating device 200 is provided downstream of the cutting mechanism 120.
  • the pole piece 2000 passes through the first conveying mechanism 110, the cutting mechanism 120 and the laminating device 200 sequentially along the conveying path X;
  • the cutting mechanism 120 cuts the pole piece 2000 to form the first end 2210 of the defective section 2200, and the second conveying mechanism 130 moves between the cutting mechanism 120 and the laminating device 200, and the pole piece 2000
  • the defective segment 2200 enters the second conveying mechanism 130, and is eliminated by the second conveying mechanism 130, so as to prevent the pole piece 2000 with the defective segment 2200 from entering the laminating device 200 to be laminated with the separator 3000, resulting in the quality of the formed electrode assembly. question.
  • Fig. 13 shows a flowchart of steps of a culling method in some embodiments of the present application.
  • some embodiments of the present application propose a method for removing defective segments of pole pieces.
  • the method for removing includes:
  • the rejecting method in the embodiment of the present application specifically includes:
  • the cutting mechanism 120 responds to the first rejection signal and cuts off the pole piece 2000 to form the first end 2210 of the defective segment 2200;
  • the third driving unit 170 responds to the first reject signal, and drives the second conveying mechanism 130 to move to the working position, and the pair of first pinch rollers 131 are located on the conveying path X of the pole piece 2000, so that the pole piece 2000 enters a pair of first Between the pinch rollers 131, the defective segment 2200 is clamped and transported by a pair of first pinch rollers 131;
  • the cutting mechanism 120 responds to the second rejection signal and cuts off the pole piece 2000 again to form the second end 2220 of the defective segment 2200, and the defective segment 2200 is removed from the pole piece. Separation on sheet 2000;
  • the third driving unit 170 responds to the second reject signal to move the pair of first pinch rollers 131 away from the conveying path X of the pole piece 2000 , and the pole piece 2000 continues to be conveyed along the conveying pipe path to enter the laminating device 200 .
  • the first conveying mechanism 110 can stop running, or can convey the pole piece 2000 together with the second conveying mechanism 130 .
  • the fourth drive unit 144 When the second conveying mechanism 130 is at the working position, the fourth drive unit 144 responds to the first rejecting signal and drives the material receiving box 141 to move to the receiving position to accept the defective section 2200 discharged by the second conveying mechanism 130; When the mechanism 130 moves to the non-working position, the fourth drive unit 144 responds to the second reject signal and drives the material receiving box 141 to move to the discharge position, and the second drive unit 143 drives the closing plate 1412 to rotate to expose the discharge port 14112, and the material receiving The defective segments 2200 in the box 141 fall into the collection box 142 .
  • rejecting method in the embodiment of the present application is not limited to the use of the rejecting device 100 to be implemented.
  • a pair of first pinch rollers 131 is used to move to the conveying path X of the pole piece 2000, and the pole piece 2000 enters between the pair of first pinch rollers 131, and the pair of first pinch rollers
  • the clamping roller 131 clamps and conveys the defective segment 2200; after the defective segment 2200 is removed from the pole piece 2000, a pair of first clamping rollers 131 moves away from the conveying path X of the pole piece 2000 to avoid the conveying path X of the pole piece 2000 .
  • the defective segment 2200 can be removed from the transported pole piece 2000, but also the defective segment 2200 of the pole piece 2000 can be transported without causing the pole piece 2000 to deviate from the original conveying path along the width direction , thereby reducing the impact on the conveying path of the pole piece 2000, and after removing the defective section 2200, there is no need to perform pole piece deflection correction again, which improves the conveying efficiency of the pole piece.
  • the pole piece processing equipment 1000 includes a first conveying mechanism 110, a cutting mechanism 120, a second conveying mechanism 130, a collection mechanism 140, a detection mechanism 160 and a laminating device 200.
  • the pole piece material belt passes through the first conveying mechanism in sequence along the conveying direction.
  • the pole piece strip is thermally laminated with two layers of separator to form a composite strip, which is further wound or laminated to form an electrode assembly .
  • the detection mechanism 160 performs real-time detection on the pole piece strip.
  • this section of strip is waste and cannot be used to form electrode assemblies.
  • the cutting mechanism 120 cuts the strip, the second conveying mechanism 130 moves vertically downwards to the working position, and the newly formed end of the pole piece strip enters between a pair of first pinch rollers 131, and the first pinch roller 131
  • the pole piece strip is guided by the guide assembly 132 and then enters the collecting mechanism 140 below.
  • the receiving box 141 in the collecting mechanism 140 only moves from the back side of the installation plate 151 to the tape running side when the waste needs to be collected.
  • the cutting mechanism 120 cuts the material tape again, and the waste falls into the receiving box 141.
  • the second conveying mechanism 130 returns to the non-working position vertically upwards, the material receiving box 141 is withdrawn to the back side of the mounting plate 151 , and the discharge port 14112 at the bottom of the material receiving box 141 is opened to dump waste materials into the collecting box 142 .
  • the first conveying mechanism 110 conveys the pole piece strip to continue to advance and enter the laminating device 200 for thermal lamination with the isolation film.
  • the detection mechanism 160 detects a defect again, the above-mentioned process is performed to remove the waste material again.
  • the first clamping roller 131 can drive the waste section forward evenly along the width direction of the pole piece strip, so that the subsequent pole piece connected with the waste section will not be dragged, and the waste can be continued after the waste is removed. Conveying the pole piece does not need to carry out the deviation correction process, thereby improving the conveying efficiency of the pole piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

本申请涉及一种剔除装置、极片加工设备以及剔除方法，属于电池制造技术领域。本申请提出一种剔除装置，用于剔除极片的缺陷段，包括：第一输送机构，用于输送极片；裁切机构，设置于第一输送机构的下游，用于裁切极片；第二输送机构，包括一对第一夹紧辊，第二输送机构在工作位置和非工作位置之间切换，在工作位置，第二输送机构位于裁切机构的下游，一对第一夹紧辊用于夹持并输送极片的缺陷段，在非工作位置，第二输送机构不在极片的输送路径上。使用该剔除装置能够在输送极片的过程中剔除缺陷段，且在剔除缺陷段的过程中对极片输送路径的影响较小。本申请还提出一种极片加工设备，包括该剔除装置。本申请还提出一种剔除方法。

Description

剔除装置、极片加工设备以及剔除方法
相关申请的交叉引用
本申请要求享有2021年8月31日提交的名称为“剔除装置、极片加工设备以及剔除方法”的中国专利申请(202111015194.9)的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及电池制造技术领域，具体而言，涉及一种剔除装置、极片加工设备以及剔除方法。
背景技术
随着新能源行业的不断发展，新能源汽车行业也在迅速发展。新能源汽车使用锂电池供电，对锂电池的安全性能具有较高的要求。
电池的制造过程中，需要将一段连续的极片进行卷绕或者折叠以成型电极组件。如果使用存在缺陷段的极片成型电极组件，则导致电池中的极片存在质量问题，电池在使用过程中可能发生短路，降低了电池的安全性能。
发明内容
为此，本申请提出一种剔除装置、极片加工设备以及剔除方法，能够在输送极片的过程中剔除缺陷段，且在剔除缺陷段的过程中对极片输送路径的影响较小。
本申请第一方面实施例提出一种剔除装置，用于剔除极片的缺陷段，包括：第一输送机构，用于输送极片；裁切机构，设置于所述第一输送机构的下游，用于裁切所述极片；第二输送机构，包括一对第一夹紧辊，所述第二输送机构在工作位置和非工作位置之间切换，在所述工作位置，所述第二输送机构位于所述裁切机构的下游，所述一对第一夹紧辊用于夹持并输送所述极片的缺陷段，在所述非工作位置，所述第二输送机构不在所述极片的输送路径上。
当需要剔除极片的缺陷段时，将一对第一夹紧辊移动至工作位置，第一夹紧辊能够沿极片的宽度方向均匀作用于极片，从而在输送极片的缺陷段的同时不会导致极片从原输送路径发生沿宽度方向的偏移，从而降低了对极片的输送路径的影响。使用本申请实施例中的剔除装置来剔除极片的缺陷段，在剔除缺陷段后不需要再次进行极片纠偏，提高了极片的输送效率。
根据本申请的一些实施例，所述剔除装置还包括：收集机构，用于收集所述极片的缺陷段；所述第二输送机构还包括导向组件，所述导向组件位于所述一对第一夹紧辊的出料侧，所述导向组件用于将所述极片的缺陷段引导至所述收集机构。
在一对第一夹紧辊的下游设置导向组件，能够改变极片的缺陷段的出料方向，使极片的缺陷段进入收集机构，有效收集缺陷段，维持极片加工环境清洁。
根据本申请的一些实施例，所述导向组件包括一对导向板，所述一对导向板之间具有供所述极片的缺陷段穿过的间隙。
当极片的缺陷段从间隙中穿过时，一对导向板的两个相互靠近的侧面均用于引导极片的缺陷段行进，从而稳定地引导极片的缺陷段进入收集机构，避免极片的缺陷段掉落至收集机构之外而导致极片加工环境杂乱。
根据本申请的一些实施例，所述第二输送机构还包括第一驱动单元，所述第一驱动单元用于驱动所述一对第一夹紧辊中的一者转动。
通过第一驱动单元能够驱动一对第一夹紧辊中的一者转动，当一对第一夹紧辊沿极片厚度方向夹紧极片的缺陷段时，一对第一夹紧辊中的一者主动转动，另一者从动转动，一对第一夹紧辊共同输送极片的缺陷段。
根据本申请的一些实施例，所述第二输送机构还包括第一支架、第二支架和第一弹性件，所述第一驱动单元安装于所述第一支架，所述一对第一夹紧辊中的一者安装于所述第一支架，另一者安装于所述第二支架，所述第一支架与所述第二支架沿垂直于所述第一夹紧辊的轴向的方向滑动连接，所述第一弹性件设置于所述第一支架和所述第二支架之间，以使所述一对第一夹紧辊具有相互靠近的趋势。
第一弹性件设置于第一支架和第二支架之间，使一对第一夹紧辊弹性压紧极片的缺陷段，能够适应极片厚度与一对第一夹紧辊之间的间隙之差，能够在极片过厚的情况下控制一对第一夹紧辊对极片的挤压力，避免由于过度挤压极片导致极片断裂。
根据本申请的一些实施例，所述收集机构包括：接料盒，用于承接所述极片的缺陷段；集料箱，用于收集所述极片的缺陷段；所述接料盒在接料位置和卸料位置之间切换，在所述接料位置，所述接料盒被配置为承接所述第二输送机构输送的所述极片的缺陷段，在所述卸料位置，所述接料盒被配置为将所述极片的缺陷段卸料至所述集料箱内。
通过接料盒能够承接第二输送机构输送的极片的缺陷段，接料盒能够将累积的极片的缺陷段卸料至集料箱内，便于缺陷段的卸料，使接料盒有足够的空间承接第二输送机构输送的极片的缺陷段。
根据本申请的一些实施例，当所述接料盒位于所述接料位置、所述第二输送机构位于所述工作位置时，所述第二输送机构的出料方向朝下设置，所述接料盒位于所述第二输送机构的下方。
第二输送机构朝下出料，接料盒位于第二输送机构的下方接料，使极片的缺陷段的输送方向与重力方向相同或者相近，能够减小极片的缺陷段受重力影响所发生的偏移，进而降低缺陷段的剔除过程对极片的输送路径的影响。
根据本申请的一些实施例，所述剔除装置还包括：机架；其中，所述第二输送机构沿第一方向可滑动地安装于所述机架以实现在所述工作位置和所述非工作位置的切换，所述接料盒沿第二方向可滑动地安装于所述机架以实现在所述接料位置和所述卸料位置的切换，所述第一方向垂直于所述第一夹紧辊的轴向，所述第二方向平行于所述第一夹紧辊的轴向。
第二输送机构的移动方向和接料盒的移动方向相互垂直，能够缩短第二输送机构和接料盒的移动行程，利于组装，还能够占用较小的空间。
根据本申请的一些实施例，所述接料盒包括：盒体，所述盒体的上端开放，所述盒体的下端具有卸料口；封闭板，活动连接于所述盒体；第二弹性件，所述第二弹性件的两端分别与所述盒体和所述封闭板连接，用于将所述封闭板保持在封闭所述卸料口的位置；所述收集机构还包括：第二驱动单元，安装于所述机架，用于在所述接料盒移动至所述卸料位置时驱动所述封闭板打开。
使用第二驱动单元能够打开封闭板，以卸除接料盒中堆积的缺陷段；第二弹性件在第二驱动单元卸力后通过弹性力驱动封闭板运动至与盒体抵接，以封闭卸料口，接料盒在承接第二输送机构输送的极片的缺陷段的过程中不会漏料。
根据本申请的一些实施例，所述机架包括：安装板，所述安装板的厚度方向沿所述第二方向延伸，所述安装板沿其厚度方向的两侧分别为第一侧和第二侧；所述第一输送机构、所述裁切机构和所述第二输送机构均设置于所述第一侧；当所述接料盒位于所述接料位置时，所述接料盒位于所述第一侧，当所述接料盒位于所述卸料位置时，所述接料盒位于所述第二侧。
第一输送机构、裁切机构和第二输送机构均于第一侧输送极片及其缺陷段，接料盒仅在第二输送机构输送缺陷段时移动至第一侧以承接缺陷段，在无缺陷段剔除时收起于第二侧，为第一侧提供更多的空间，便于第一侧的裁切机构等部件运动。
根据本申请的一些实施例，所述剔除装置还包括：检测机构，用于检测所述极片是否存在缺陷段并发送代表所述极片的缺陷段的起始位置的第一剔除信号以及代表所述极片的缺陷段的终止位置的第二剔除信号；所述裁切机构被配置为响应所述第一剔除信号并切断所述极片，以及响应所述第二剔除信号再次切断极片；所述第二输送机构被配置为响应所述第一剔除信号并移动至所述工作位置，以及响应所述第二剔除信号并移动至所述非工作位置。
使用检测机构能够检测极片是否存在缺陷段以及进一步确定缺陷段的起始位置和终止位置，根据检测机构的检测结果，裁切机构能够在极片的输送过程中经过两次裁切将缺陷段与极片分离，第二输送机构能够在需要剔除缺陷段时才移动至工作位置，在不需要剔除缺陷段时收起于非工作位置以避让极片的输送路径。裁切机构和第二输送机构能够根据检测机构的检测结果自动运行，从而自动化进行剔除动作。
本申请第二方面实施例提出一种极片加工设备，所述极片加工设备包括：
第一方面实施例提供的剔除装置；
覆合装置，用于将所述极片和隔膜热覆合，设置于所述裁切机构的下游，当所述第二输送机构在所述工作位置时，所述第二输送机构位于所述裁切机构和所述覆合装置之间。
裁切机构的下游设置有覆合装置，当极片不存在缺陷段时，极片沿输送路径依次经过第一输送机构、裁切机构和覆合装置；当极片存在缺陷段时，裁切机构裁切极片形成缺陷段的一端，第二输送机构移动至裁切机构和覆合装置之间，极片的缺陷段进入第二输送机构，经过第二输送机构进行剔除，以避免带有缺陷段的极片进入覆合装置与隔膜进行覆合，导致成型的电极组件存在质量问题。
本申请第三方面实施例提出一种剔除方法，用于剔除极片的缺陷段，所述剔除方法包括：
检测行进中的极片是否存在缺陷段；
当检测到所述缺陷段的起始位置时，切断所述极片；
将一对第一夹紧辊移动至所述极片的输送路径上，使所述极片进入所述一对第一夹紧辊之间，通过所述一对第一夹紧辊夹持并输送所述缺陷段；
当检测到所述缺陷段的终止位置时，再次切断所述极片，以将所述缺陷段从所述极片上分离；
将所述一对第一夹紧辊从所述极片的输送路径上移开。
在检测到极片存在缺陷段时，使用一对第一夹紧辊移动至极片的输送路径上，极片进入一对第一夹紧辊之间，一对第一夹紧辊夹持并输送缺陷段；缺陷段从极片上剔除后，一对第一夹紧辊从极片的输送路径移开，避让极片的输送路径。通过上述的剔除方法，不仅能够从输送的极片中剔除缺陷段，还能够在输送极片的缺陷段的同时不会导致极片从原输送路径发生沿宽度方向的偏移，从而降低了对极片的输送路径的影响，在剔除缺陷段后不需要再次进行极片纠偏，提高了极片的输送效率。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，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相关的附图。
图1示出的是本申请一些实施例中一种形式的极片加工设备的第一种状态的示意图；
图2示出的是本申请一些实施例中一种形式的极片加工设备的第二种状态的示意图；
图3示出的是本申请一些实施例中一种形式的极片加工设备的第三种状态的示意图；
图4示出的是本申请一些实施例中另一种形式的极片加工设备的示意图；
图5示出的是本申请一些实施例中第二输送机构的结构示意图；
图6示出的是本申请一些实施例中剔除装置的结构示意图；
图7示出的是图6中A处的局部放大图；
图8示出的是本申请一些实施例中收集机构的结构示意图；
图9示出的是图8中B处的局部放大图；
图10示出的是本申请实施例中的剔除装置处于第一种状态时的侧视图；
图11示出的是本申请实施例中的剔除装置处于第二种状态时的侧视图；
图12示出的是本申请一些实施例中另一种形式的极片加工设备的示意图；
图13示出的是本申请一些实施例中剔除方法的步骤流程图；
上述附图未按照比例绘制。
图标：1000-极片加工设备；100-剔除装置；110-第一输送机构；111-第二夹紧辊；120-裁切机构；130-第二输送机构；131-第一夹紧辊；131a-主动辊；131b-从动辊；132-导向组件；1321-第一导向板；1322-第二导向板；1323-第一导向部；1324-第二导向部；133-第一驱动单元；134-第一支架；135-第二支架；136-第一弹性件；140-收集机构；141-接料盒；1411-盒体；14111-进料口；14112-卸料口；1412-封闭板；1413-第二弹性件；142-集料箱；143-第二驱动单元；144-第四驱动单元；1441-电机；1442-齿轮；1443-齿条；150-机架；151-安装板；1511-第一侧；1512-第二侧；1513-过孔；152-第三支架；160-检测机构；170-第三驱动单元；200-覆合装置；210-第三夹紧辊；2000-极片；2100-极片本体；2200-缺陷段；2210-第一端；2220-第二端；3000-隔膜；X-输送路径；P-第一方向；Q-第二方向。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，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作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。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本申请所描述的实施例可以与其它实施例相结合。
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”、“附接”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，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中出现的“多个”指的是两个以上(包括两个)。
本申请中，电池单体可以包括锂离子二次电池、锂离子一次电池、锂硫电池、钠锂离子电池、钠离子电池或镁离子电池等，本申请实施例对此并不限定。电池单体可呈圆柱体、扁平体、长方体或其它形状等，本申请实施例对此也不限定。电池单体一般按封装的方式分成三种：圆柱电池单体、方形电池单体和软包电池单体。
电池单体包括电极组件和电解液，电极组件由正极极片、负极极片和隔离膜组成。电池单体主要依靠金属离子在正极极片和负极极片之间移动来工作。正极极片包括正极集流体和正极活性物质层，正极活性物质层涂覆于正极集流体的表面，未涂敷正极活性物质层的正极集流体凸出于已 涂覆正极活性物质层的正极集流体，未涂敷正极活性物质层的正极集流体作为正极极耳。以锂离子电池为例，正极集流体的材料可以为铝，正极活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。负极极片包括负极集流体和负极活性物质层，负极活性物质层涂覆于负极集流体的表面，未涂敷负极活性物质层的负极集流体凸出于已涂覆负极活性物质层的负极集流体，未涂敷负极活性物质层的负极集流体作负极极耳。负极集流体的材料可以为铜，负极活性物质可以为碳或硅等。为了保证通过大电流而不发生熔断，正极极耳的数量为多个且层叠在一起，负极极耳的数量为多个且层叠在一起。隔离膜的材质可以为PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)等。此外，电极组件可以是卷绕式结构，也可以是叠片式结构，本申请实施例并不限于此。
相关技术中，极片沿输送路径行进，检测到极片存在缺陷段后，需要裁切极片，将极片的缺陷段从原输送路径引出，再次裁切极片以将缺陷段与极片分离，沿原输送路径继续输送极片。
发明人发现，在引出极片的缺陷段的过程中，一方面，由于极片经裁切后失去张力，极片沿其宽度方向很容易发生偏移；另一方面，在输送极片的缺陷段行进的过程中，由于极片的端部位置可能发生偏移，且常见的输送机构为真空吸爪，在拖拽极片的端部的过程中可能存在沿极片的宽度方向施力不均的情况，导致极片沿其宽度方向进一步偏移。在剔除缺陷段后，极片已经在宽度方向上偏离原输送路径，需要经过纠偏工序来调整极片在宽度方向上的位置，再继续输送极片。由于每次剔除极片的缺陷段都需要纠偏工序后才能继续输送极片，导致缺陷段的剔除效率较低，明显降低极片的输送效率。
基于上述思路，本申请提出一种新的技术方案，能够在输送极片的过程中剔除缺陷段，且在剔除缺陷段的过程中对极片输送路径的影响较小，不会引起极片在宽度方向上的位置偏移，在剔除缺陷段后能够继续沿原输送路径输送极片，省去了纠偏工序，提高了极片的输送效率。
图1、图2和图3示出的分别是本申请一些实施例中极片加工设备的三种状态的示意图。
如图1、图2和图3所示，本申请的一些实施例提出一种极片加工设备1000，包括剔除装置100和覆合装置200。
剔除装置100包括第一输送机构110、裁切机构120和第二输送机构130。
第一输送机构110用于输送极片，裁切机构120设置于第一输送机构110的下游，用于裁切极片2000。第二输送机构130在工作位置和非工作位置之间切换。
如图1所示，在非工作位置，第二输送机构130不在极片2000的输送路径X上。覆合装置200用于将极片2000和隔膜3000热覆合，覆合装置200设置于裁切机构120的下游。
如图2所示，在工作位置，第二输送机构130位于裁切机构120的下游并输送极片2000的缺陷段2200，第二输送机构130位于裁切机构120和覆合装置200之间。
可以理解的是，“裁切机构120设置于第一输送机构110的下游”指的是，沿极片2000的输送路径X，第一输送机构110和裁切机构120依次布置，极片2000在输送过程中依次经过第一输送机构110和裁切机构120。
可以理解的是，极片2000为成型电池单体的电极组件的原材料之一，极片2000包括极片本体2100和缺陷段2200，裁切机构120在缺陷段2200的起始位置对极片2000进行裁切，形成缺陷段2200的第一端2210，此时缺陷段2200与极片本体2100连接为一体；在缺陷段2200的终止位置对极片2000进行裁切，形成缺陷段2200的第二端2220，并将缺陷段2200与极片本体2100分离。剔除装置100也可以用于剔除其他形式的料带的缺陷段，例如隔膜料带、复合料带等等。
第一输送机构110包括一对第二夹紧辊111，一对第二夹紧辊111用于夹紧并输送极片2000沿输送路径X行进。
覆合装置200包括一对第三夹紧辊210，一对第三夹紧辊210之间具有间隙，极片2000和两层隔膜3000沿输送路径X进入一对第三夹紧辊210之间的间隙，两层隔膜3000分别位于极片2000沿厚度方向的两侧，极片2000和两层隔膜3000经覆合装置200热覆合后形成一体的复合料带，复合料带用于成型电极组件。在其他实施例中，覆合装置200也可以将极片2000与一层隔膜 3000热覆合。
如图1、图2和图3所示，在本申请的一些实施例中，剔除装置100包括第一输送机构110、裁切机构120和第二输送机构130。第一输送机构110用于输送极片；裁切机构120设置于第一输送机构110的下游，用于裁切极片2000；第二输送机构130包括一对第一夹紧辊131，第二输送机构130在工作位置和非工作位置之间切换。在工作位置，第二输送机构130位于裁切机构120的下游，一对第一夹紧辊131用于夹持并输送极片2000的缺陷段2200；在非工作位置，第二输送机构130不在极片2000的输送路径X上。
可以理解的是，“极片2000的输送路径X”指的是，极片2000在行进过程中，极片2000的某一点在行进过程中形成的连续的轨迹；当考虑到极片2000的宽度时，输送路径X为一段连续的带状轨迹。
一对第一夹紧辊131和一对第二夹紧辊111平行设置且规格相同，当第一夹紧辊131和第二夹紧辊111以相同角速度转动时，可实现同步输送极片2000，不会造成极片2000褶皱或者偏移。在其他实施例中，一对第一夹紧辊131夹紧且输送极片2000的缺陷段2200后，一对第二夹紧辊111可以停止运行，以省去第一夹紧辊131与第二夹紧辊111的转速调试步骤。
裁切机构120可以于固定位置对极片2000进行裁切，也可以与极片2000同步移动并以追切的形式裁切极片2000。尤其是裁切机构120以追切形式裁切极片2000时，裁切机构120实现追切动作需要较大的空间，设置第二输送机构130在工作位置和非工作位置之间切换，也可以为裁切机构120实施追切动作提供足够的空间。
当需要剔除极片2000的缺陷段2200时，将一对第一夹紧辊131移动至工作位置，第一夹紧辊131能够沿极片2000的宽度方向均匀作用于极片2000，从而在输送极片2000的缺陷段2200的同时不会导致极片2000从原输送路径X发生沿宽度方向的偏移，从而降低了对极片2000的输送路径X的影响。使用剔除装置100来剔除极片2000的缺陷段2200，在剔除缺陷段2200后不需要再次进行极片纠偏，提高了极片2000的输送效率。
图4示出的是本申请一些实施例中另一种形式的极片加工设备1000的示意图。
如图4所示，剔除装置100还包括收集机构140，用于收集极片2000的缺陷段2200；第二输送机构130还包括导向组件132，导向组件132位于一对第一夹紧辊131的出料侧，导向组件132用于将极片2000的缺陷段2200引导至收集机构140。
导向组件132可以改变第一夹紧辊131输送的极片2000的缺陷段2200的出料方向，使极片2000的缺陷段2200向靠近收集机构140的方向输送；导向组件132也可以不改变第一夹紧辊131的输送极片2000的缺陷段2200的出料方向，沿原出料方向延长引导极片2000的缺陷段2200，收集机构140移动至极片2000的输送路径X并于第二输送机构130的下游收集缺陷段2200。
收集机构140可以固定设置，通过导向组件132改变极片2000的缺陷段2200的出料方向，将极片2000的缺陷段2200引导至收集机构140；收集机构140也可以仅在需要剔除极片2000的缺陷段2200的时候移动至导向组件132的下游并收集缺陷段2200。
在一对第一夹紧辊131的下游设置导向组件132，能够改变极片2000的缺陷段2200的出料方向，使极片2000的缺陷段2200进入收集机构140，有效收集缺陷段2200，维持极片加工环境清洁。
在本申请的一些实施例中，导向组件132包括一对导向板，一对导向板之间具有供极片2000的缺陷段2200穿过的间隙。
图5示出的是本申请一些实施例中第二输送机构的结构示意图。
如图4和图5所示，具体而言，一对导向板分别为第一导向板1321和第二导向板1322，第一导向板1321和第二导向板1322之间形成间隙，第一导向板1321和第二导向板1322从极片2000的缺陷段2200的两侧作用于极片2000的缺陷段2200，以稳定可靠地引导极片2000的缺陷段 2200向靠近收集机构140的方向输送。
基于前述的“导向组件132可以改变第一夹紧辊131输送的极片2000的缺陷段2200的出料方向”的实施方式，导向组件132沿输送方向的两端还包括第一导向部1323和第二导向部1324，第一导向部1323的延伸方向与一对第一夹紧辊131的出料方向相同，第二导向部1324的延伸方向朝向收集机构140，以改变极片2000的缺陷段2200经第二输送机构130输送后的输送方向。
导向组件132可以以多种形式固定于一对第一夹紧辊131的出料侧。导向组件132和第一夹紧辊131可以均安装于共同的支架，在支架的带动下同步移动至工作位置；导向组件132和一对第一夹紧辊131也可以分别安装于一个支架。导向组件132也可以仅包括一个导向板，一个导向板用于引导极片2000的缺陷段2200进入收集机构140。
当极片2000的缺陷段2200从间隙中穿过时，一对导向板的两个相互靠近的侧面均用于引导极片2000的缺陷段2200行进，从而稳定地引导极片2000的缺陷段2200进入收集机构，避免极片2000的缺陷段2200掉落至收集机构140之外，无法有效收集缺陷段2200，导致极片加工环境杂乱。
第二输送机构130还包括第一驱动单元133，第一驱动单元133用于驱动一对第一夹紧辊131中的一者转动。
如图5所示，为了将一对第一夹紧辊131进行区分，一对第一夹紧辊131中的一者为主动辊131a，另一者为从动辊131b，主动辊131a与第一驱动单元133的输出端传动连接，在第一驱动单元133的驱动下转动，从动辊131b与主动辊131a共同夹紧极片2000的缺陷段2200，在输送极片2000的过程中被动转动。
在其他实施例中，第一驱动单元133也可以设置有两个，每个第一驱动单元133驱动一个第一夹紧辊131，使一对第一夹紧辊131同步反向转动。
第一驱动单元133可以为电机皮带组件，也可以为电机齿轮组件；第一驱动单元133可以与一对第一夹紧辊131安装于共同的支架，也可以分别安装于一个支架。
通过第一驱动单元133能够驱动一对第一夹紧辊131中的一者转动，当一对第一夹紧辊131沿极片厚度方向夹紧极片2000的缺陷段2200时，一对第一夹紧辊131中的一者主动转动，另一者从动转动，一对第一夹紧辊131共同输送极片2000的缺陷段2200。
如图5所示，第二输送机构130还包括第一支架134、第二支架135和第一弹性件136，第一驱动单元133安装于第一支架134，一对第一夹紧辊131中的一者安装于第一支架134，另一者安装于第二支架135，第一支架134与第二支架135沿垂直于第一夹紧辊131的轴向的方向滑动连接，第一弹性件136设置于第一支架134和第二支架135之间，以使一对第一夹紧辊131具有相互靠近的趋势。
一对第一夹紧辊131夹紧并输送极片2000的缺陷段2200的过程中，一对第一夹紧辊131可以刚性夹紧极片2000的缺陷段2200，也可以弹性夹紧极片2000的缺陷段2200；一对第一夹紧辊131弹性夹紧极片2000的缺陷段2200时，主动辊131a和从动辊131b可以分别弹性压紧于极片2000的缺陷段2200的表面，也可以是主动辊131a和从动辊131b中的一者弹性压紧于极片2000的缺陷段的表面，另一者刚性压紧于极片2000的缺陷段2200的表面。
基于前述的“主动辊131a和从动辊131b中的一者弹性压紧于极片2000的缺陷段的表面，另一者刚性压紧于极片2000的缺陷段2200的表面”的实施方式，可以使用主动辊131a或者从动辊131b弹性压紧极片2000的缺陷段2200的表面。优选的一种实施方式为，主动辊131a安装于第一支架134，从动辊131b安装于第二支架135，弹性压紧极片2000的缺陷段2200的表面的第一夹紧辊131为从动辊131b，将第一驱动单元133和第一弹性件136分别沿垂直于第一夹紧辊131的轴向的方向，主动辊131a用于驱动极片2000的缺陷段2200行进，从动辊131b用于弹性压紧极片2000的缺陷段2200的表面。
基于前述的导向组件132的具体结构形式，第一导向板1321和主动辊131a对应，第二导 向板1322与从动辊131b对应。第一导向板1321安装于第一支架134，第二导向板1322可以安装于第二支架135，以跟随从动辊131b一起沿垂直于其轴向的方向发生位移，也可以固定安装于第一支架134，第一导向板1321和第二导向板1322之间的间隙固定设置。
第一弹性件136可以设置有多个，多个第一弹性件136沿从动辊131b的轴向间隔设置，每个第一弹性件136的两端抵接于第一支架134和第二支架135之间。第一弹性件136可以为直弹簧、导向弹簧或者气缸等。
第一弹性件136设置于第一支架134和第二支架135之间，使一对第一夹紧辊131弹性压紧极片2000的缺陷段2200，能够适应极片2000厚度与一对第一夹紧辊131之间的间隙之差，能够在极片2000过厚的情况下控制一对第一夹紧辊131对极片2000的挤压力，避免由于过度挤压极片2000导致极片2000断裂。
图6示出的是本申请一些实施例中剔除装置的结构示意图；图7示出的是图6中A处的局部放大图。
如图6和图7所示，收集机构140包括接料盒141和集料箱142，接料盒141用于承接极片2000的缺陷段2200，集料箱142用于收集极片2000的缺陷段2200；接料盒141在接料位置和卸料位置之间切换，在接料位置，接料盒141被配置为承接第二输送机构130输送的极片2000的缺陷段2200，在卸料位置，接料盒141被配置为将极片2000的缺陷段2200卸料至集料箱142内。
接料盒141在接料位置和卸料位置之间切换，以在接料位置承接极片2000的缺陷段2200，在卸料位置将极片2000的缺陷段2200卸料至集料箱142内。接料盒141在卸料位置时，接料盒141可以位于集料箱142的上侧，极片2000的缺陷段2200在重力作用下落入集料箱142；接料盒141也可以位于集料箱142的下侧或者水平方向的一侧，利用吸风的形式收集极片2000的缺陷段2200。收集机构140也可以仅包括接料盒141，通过定期清空接料盒141来保证接料盒141有效承接缺陷段2200。
如图6和图7所示，剔除装置100还包括第三驱动单元170，第三驱动单元170用于驱动第一支架134移动，以使第二输送机构130在工作位置和非工作位置之间切换。第三驱动单元170可以为直线气缸、电机皮带组件等直线驱动单元。
通过接料盒141能够承接第二输送机构130输送的极片2000的缺陷段2200，接料盒141能够将累积的极片2000的缺陷段2200卸料至集料箱142内，便于缺陷段2200的卸料，避免缺陷段2200积满接料盒141。
如图6和图7所示，当接料盒141位于接料位置、第二输送机构130位于工作位置时，第二输送机构130的出料方向朝下设置，接料盒141位于第二输送机构的下方。
当需要剔除极片2000的缺陷段2200时，第二输送机构130移动至工作位置且输送极片2000的缺陷段2200，接料盒141移动至接料位置且承接第二输送机构130出料的极片2000的缺陷段2200，待缺陷段2200与极片本体2100分离后，缺陷段2200落入接料盒141。
在其他实施例中，当接料盒141位于接料位置、第二输送机构130位于工作位置时，接料盒141和第二输送机构130也可以具有其他的位置关系。例如，接料盒141可以位于第二输送机构130的上侧或者水平方向的一侧，利用吸风的形式承接极片2000的缺陷段2200。
第二输送机构130朝下出料，接料盒141位于第二输送机构130的下方接料，使极片2000的缺陷段2200的输送方向与重力方向相同或者相近，能够减小极片2000的缺陷段2200受重力影响所发生的偏移，进而降低缺陷段2200的剔除过程对极片2000的输送路径的影响。
如图6和图7所示，在本申请的一些实施例中，剔除装置100还包括机架150；其中，第二输送机构130沿第一方向P可滑动地安装于机架150以实现在工作位置和非工作位置的切换，接料盒141沿第二方向Q可滑动地安装于机架150以实现在接料位置和卸料位置的切换，第一方向P垂直于第一夹紧辊131的轴向，第二方向Q平行于第一夹紧辊131的轴向。
第一方向P可以为竖直方向，第二方向Q可以为水平方向，不仅利于组装，且能够缩短第 二输送机构130和接料盒141的移动行程；基于第二方向Q为水平方向的实施方式，第一方向P也可以为与第二方向Q垂直且与竖直方向倾斜设置的其他方向。
第二输送机构130的移动方向和接料盒141的移动方向相互垂直，能够缩短第二输送机构130和接料盒141的移动行程，利于组装，还能够占用较小的空间。
图8示出的是本申请一些实施例中收集机构的结构示意图；图9为图8中B处的局部放大图。
如图6、图7和图8所示，接料盒141包括盒体1411、封闭板1412和第二弹性件1413，盒体1411的上端开放，盒体1411的下端具有卸料口14112，封闭板1412活动连接于盒体1411；第二弹性件1413的两端分别与盒体1411和封闭板1412连接，用于将封闭板1412保持在封闭卸料口14112的位置。收集机构140还包括第二驱动单元143，安装于机架150，用于在接料盒141移动至卸料位置时驱动封闭板1412打开。
盒体1411的上端具有开放的进料口14111，下端具有可闭合的卸料口14112。具体而言，封闭板1412的长度方向的一侧边缘与盒体1411的下端通过合页或者转轴转动连接，封闭板1412的面积大于卸料口14112的开口面积，以使封闭板1412封闭卸料口14112后其部分边缘位于盒体1411的外部，封闭板1412的位于盒体1411的外部的部分用于与第二弹性件1413连接，也可以与第二驱动单元143的输出端配合。
第二弹性件1413的一端与机架150连接，另一端与封闭板1412的位于盒体1411的外部的部分连接，以驱动封闭板1412相对于盒体1411转动至封闭卸料口14112。
第二弹性件1413可以设置有两个，两个第二弹性件1413沿盒体1411的长度方向间隔设置；第二弹性件1413也可以设置有一个，沿盒体1411的长度方向居中设置。第二弹性件1413可以为直弹簧，也可以为气缸。
第二驱动单元143可以设置有两个，两个第二驱动单元143沿盒体1411的长度方向间隔设置；第二驱动单元143也可以设置有一个，沿盒体1411的长度方向居中设置。第二驱动单元143可以为气缸、液压推杆等直线驱动机构。
第二驱动单元143的输出端可以作用于封闭板1412的位于盒体1411内部的部分，也可以作用于封闭板1412的位于盒体1411的外部的部分；第二驱动单元143的输出端可以直接抵接于封闭板1412，也可以通过连杆与封闭板1412铰接。
如图8所示，在本申请的一些实施例中，第二弹性件1413与封闭板1412的位于盒体1411外部的部分连接，同侧的第二驱动单元143作用于封闭板1412的位于盒体1411内部的部分，且通过连杆(图中未示出)与封闭板1412铰接。
如图6、图7和图8所示，收集机构140还包括第四驱动单元144，第四驱动单元144被配置为驱动接料盒141移动，以使接料盒141在接料位置和卸料位置之间切换。具体而言，第四驱动单元144可以为电机与齿条配合的形式，也可以为直线气缸等常见的直线驱动件。
如图9所示，第四驱动单元144包括电机1441、齿轮1442和齿条1443，剔除装置100还包括机架150。接料盒141的盒体1411与机架150沿第二方向Q滑动配合，盒体1411设有沿第二方向Q延伸的齿条1443，电机固定于机架150，电机1441的输出端设有齿轮1442，齿轮1442与齿条1443啮合连接，电机1441驱动齿轮1442转动，以驱动盒体1411沿第二方向Q移动。
使用第二驱动单元143能够打开封闭板1412，以卸除接料盒141中堆积的缺陷段2200；第二弹性件1413在第二驱动单元143卸力后通过弹性力驱动封闭板1412运动至与盒体1411抵接，以封闭卸料口14112，接料盒141在承接第二输送机构130输送的极片2000的缺陷段2200的过程中不会漏料。
图10和图11示出的分别是本申请实施例中的剔除装置处于两种状态时的侧视图。
图10和图11所示，机架150包括安装板151，安装板151的厚度方向沿第二方向Q延伸，安装板151沿其厚度方向的两侧分别为第一侧1511和第二侧1512。如图第一输送机构110、裁切 机构120和第二输送机构130均设置于第一侧1511；当接料盒141位于接料位置时，接料盒141位于第一侧1511，当接料盒141位于卸料位置时，接料盒141位于第二侧1512。
安装板151的第一侧1511用于输送极片2000，第二侧1512用于布置集料箱142、第二驱动单元143、第三驱动单元170以及第四驱动单元144等部件。机架150还包括第三支架152，第三支架152设置于安装板151的第二侧1512，安装板151设有过孔1513(如图7所示)，过孔1513用于供接料盒141沿第二方向Q穿过安装板151，以在接料位置和卸料位置之间切换。
第二驱动单元143安装于第三支架152，第二驱动单元143的输出端仅在盒体1411位于卸料位置时作用于封闭板1412；第二驱动单元143也可以安装于盒体1411，跟随盒体1411同步移动。
第一输送机构110、裁切机构120和第二输送机构130均于第一侧1511输送极片2000及其缺陷段2200，接料盒141仅在第二输送机构130输送缺陷段2200时移动至第一侧1511以承接缺陷段2200，在无缺陷段2200剔除时收起于第二侧1512，为第一侧1511提供更多的空间，便于第一侧1511的裁切机构120等部件运动。
图12示出的是本申请一些实施例中另一种形式的极片加工设备的示意图。
如图12所示，剔除装置100还包括检测机构160，用于检测极片2000是否存在缺陷段2200并发送代表极片2000的缺陷段2200的起始位置的第一剔除信号以及代表极片2000的缺陷段2200的终止位置的第二剔除信号。裁切机构120被配置为响应第一剔除信号并切断极片2000，以及响应第二剔除信号再次切断极片；第二输送机构130被配置为响应第一剔除信号并移动至工作位置，以及响应第二剔除信号并移动至非工作位置。
检测机构160可以为CCD相机，通过色差检测的方式检测极片2000是否存在缺陷段，也可以为测距传感器，通过检测极片2000的涂层厚度来识别极片2000是否存在缺陷段2200。
裁切机构120响应第一剔除信号和第二剔除信号执行裁切动作时，可以在缺陷段2200的起始位置和终止位置分别经过裁切机构120时裁切极片，也可以考虑到成型一个完整的电极组件所需要的极片2000的长度单位，对裁切位置作出调整，从极片2000中剔除的一段废料中包括缺陷段2200，缺陷段2200的两端具有合格的极片。
第一输送机构110也可以在第二输送机构130夹紧并输送极片2000的缺陷段后停止运行，响应第二剔除信号并继续输送极片2000，使极片2000上仅有一个输送机构运行，避免两个输送机构存在速度差而导致极片2000拱起或者撕裂。
使用检测机构160能够检测极片2000是否存在缺陷段2200以及进一步确定缺陷段2200的起始位置和终止位置，根据检测机构160的检测结果，裁切机构120能够在极片2000的输送过程中经过两次裁切将缺陷段2200与极片本体2100分离，第二输送机构130能够在需要剔除缺陷段2200时才移动至工作位置，在不需要剔除缺陷段2200时收起于非工作位置以避让极片2000的输送路径X。裁切机构120和第二输送机构130能够根据检测机构160的检测结果自动运行，从而自动化进行剔除动作。
如图12所示，本申请的一些实施例提出一种极片加工设备1000，极片加工设备1000包括剔除装置100和覆合装置200。覆合装置200用于将极片2000和隔膜3000热覆合，设置于裁切机构120的下游，当第二输送机构130在工作位置时，第二输送机构130位于裁切机构120和覆合装置200之间。
裁切机构120的下游设置有覆合装置200，当极片2000不存在缺陷段2200时，极片2000沿输送路径X依次经过第一输送机构110、裁切机构120和覆合装置200；当极片2000存在缺陷段2200时，裁切机构120裁切极片2000形成缺陷段2200的第一端2210，第二输送机构130移动至裁切机构120和覆合装置200之间，极片2000的缺陷段2200进入第二输送机构130，经过第二输送机构130进行剔除，以避免带有缺陷段2200的极片2000进入覆合装置200与隔膜3000进行覆合，导致成型的电极组件存在质量问题。
图13示出的是本申请一些实施例中一种剔除方法的步骤流程图。
如图13所示，本申请的一些实施例提出一种剔除方法，用于剔除极片的缺陷段，剔除方法包括：
S1：检测行进中的极片是否存在缺陷段；
S2：当检测到所述缺陷段的起始位置时，切断极片；
S3：将一对第一夹紧辊移动至极片的输送路径上，使极片进入一对第一夹紧辊之间，通过一对第一夹紧辊夹持并输送缺陷段；
S4：当检测到缺陷段的终止位置时，再次切断极片，以将缺陷段从极片上分离；
S5：将一对第一夹紧辊从极片的输送路径上移开。
需要说明的是，上述剔除方法的步骤的实施顺序不作具体限定，上述剔除方法的步骤的实施顺序也不是唯一的实施顺序。
基于上述的剔除装置100，本申请实施例剔除方法具体包括：
使用检测机构160检测行进中的极片2000是否存在缺陷段；
检测机构160检测到缺陷段2200的起始位置时并发送第一剔除信号，裁切机构120响应第一剔除信号并切断极片2000，形成缺陷段2200的第一端2210；
第三驱动单元170响应第一剔除信号，并驱动第二输送机构130移动至工作位置，一对第一夹紧辊131位于极片2000的输送路径X上，使极片2000进入一对第一夹紧辊131之间，通过一对第一夹紧辊131夹持并输送缺陷段2200；
检测机构160检测到缺陷段2200的终止位置时并发送第二剔除信号，裁切机构120响应第二剔除信号并再次切断极片2000，形成缺陷段2200的第二端2220，缺陷段2200从极片2000上分离；
第三驱动单元170响应第二剔除信号，将一对第一夹紧辊131从极片2000的输送路径X上移开，极片2000继续沿输送管路径输送，以进入覆合装置200。
当第二输送机构130夹紧并输送极片2000时，第一输送机构110可以停止运行，也可以与第二输送机构130共同输送极片2000。
当第二输送机构130位于工作位置时，第四驱动单元144响应第一剔除信号并驱动接料盒141移动至接料位置，承接第二输送机构130出料的缺陷段2200；当第二输送机构130移动至非工作位置时，第四驱动单元144响应第二剔除信号并驱动接料盒141移动至卸料位置，第二驱动单元143驱动封闭板1412转动以暴露卸料口14112，接料盒141中的缺陷段2200落入集料箱142。
可以理解的是，本申请实施例中的剔除方法不局限于使用剔除装置100才能实施。
在检测到极片2000存在缺陷段2200时，使用一对第一夹紧辊131移动至极片2000的输送路径X上，极片2000进入一对第一夹紧辊131之间，一对第一夹紧辊131夹持并输送缺陷段2200；缺陷段2200从极片2000上剔除后，一对第一夹紧辊131从极片2000的输送路径X移开，避让极片2000的输送路径X。通过上述的剔除方法，不仅能够从输送的极片2000中剔除缺陷段2200，还能够在输送极片2000的缺陷段2200的同时不会导致极片2000从原输送路径发生沿宽度方向的偏移，从而降低了对极片2000的输送路径的影响，在剔除缺陷段2200后不需要再次进行极片纠偏，提高了极片的输送效率。
本申请的一些实施例提出一种极片加工设备1000，用于剔除极片中的废料段。极片加工设备1000包括第一输送机构110、裁切机构120、第二输送机构130、收集机构140、检测机构160以及覆合装置200，正常情况下，极片料带沿输送方向依次经过第一输送机构110、裁切机构120和覆合装置200，极片料带在覆合装置200中与两层隔离膜热压覆合，形成复合料带，进一步进行卷绕或者层叠以成型电极组件。检测机构160对极片料带进行实时检测，当发现极片料带存在漏料、涂层厚度不足、接带间隙等缺陷时，这一段料带属于废料，不能用于成型电极组件，需要从极片料带中将这一段剔除。裁切机构120裁断料带，第二输送机构130竖直向下移动至工作位置，极 片料带新形成的端部进入一对第一夹紧辊131之间，由第一夹紧辊131进行输送，极片料带经导向组件132导向后进入下方的收集机构140。收集机构140中的接料盒141仅在需要收集废料时才从安装板151的背侧移动至走带侧，废料进入接料盒141后，裁切机构120再次裁断料带，废料掉入接料盒141中，此时一段废料已经从极片中剔除。第二输送机构130竖直向上回到非工作位置，接料盒141撤回到安装板151的背侧，接料盒141底部的卸料口14112打开以将废料倾倒至集料箱142。第二输送机构130离开工作位置后，第一输送机构110输送极片料带继续行进并进入覆合装置200，与隔离膜进行热覆合。等检测机构160再次检测到缺陷时，执行上述过程再次将废料剔除。
在剔除废料的过程中，由于第一夹紧辊131能够沿极片料带的宽度方向均匀驱动废料段前进，从而不会拽偏与废料段连接的后续的极片，在剔除废料后可继续输送极片，不必进行纠偏工序，从而提高了极片的输送效率。
需要说明的是，在不冲突的情况下，本申请中的实施例中的特征可以相互结合。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (13)

  1. 一种剔除装置，用于剔除极片的缺陷段，其中，包括：
    第一输送机构，用于输送极片；
    裁切机构，设置于所述第一输送机构的下游，用于裁切所述极片；
    第二输送机构，包括一对第一夹紧辊，所述第二输送机构在工作位置和非工作位置之间切换，在所述工作位置，所述第二输送机构位于所述裁切机构的下游，所述一对第一夹紧辊用于夹持并输送所述极片的缺陷段，在所述非工作位置，所述第二输送机构不在所述极片的输送路径上。
  2. 根据权利要求1所述的剔除装置，其中，所述剔除装置还包括：
    收集机构，用于收集所述极片的缺陷段；
    所述第二输送机构还包括导向组件，所述导向组件位于所述一对第一夹紧辊的出料侧，所述导向组件用于将所述极片的缺陷段引导至所述收集机构。
  3. 根据权利要求2所述的剔除装置，其中，所述导向组件包括一对导向板，所述一对导向板之间具有供所述极片的缺陷段穿过的间隙。
  4. 根据权利要求2或3所述的剔除装置，其中，所述第二输送机构还包括第一驱动单元，所述第一驱动单元用于驱动所述一对第一夹紧辊中的一者转动。
  5. 根据权利要求4所述的剔除装置，其中，所述第二输送机构还包括第一支架、第二支架和第一弹性件，所述第一驱动单元安装于所述第一支架，所述一对第一夹紧辊中的一者安装于所述第一支架，另一者安装于所述第二支架，所述第一支架与所述第二支架沿垂直于所述第一夹紧辊的轴向的方向滑动连接，所述第一弹性件设置于所述第一支架和所述第二支架之间，以使所述一对第一夹紧辊具有相互靠近的趋势。
  6. 根据权利要求2-5任一项所述的剔除装置，其中，所述收集机构包括：
    接料盒，用于承接所述极片的缺陷段；
    集料箱，用于收集所述极片的缺陷段；
    所述接料盒在接料位置和卸料位置之间切换，在所述接料位置，所述接料盒被配置为承接所述第二输送机构输送的所述极片的缺陷段，在所述卸料位置，所述接料盒被配置为将所述极片的缺陷段卸料至所述集料箱内。
  7. 根据权利要求6所述的剔除装置，其中，当所述接料盒位于所述接料位置、所述第二输送机构位于所述工作位置时，所述第二输送机构的出料方向朝下设置，所述接料盒位于所述第二输送机构的下方。
  8. 根据权利要求6或7所述的剔除装置，其中，所述剔除装置还包括：
    机架；
    其中，所述第二输送机构沿第一方向可滑动地安装于所述机架以实现在所述工作位置和所述非工作位置的切换，所述接料盒沿第二方向可滑动地安装于所述机架以实现在所述接料位置和所述卸料位置的切换，所述第一方向垂直于所述第一夹紧辊的轴向，所述第二方向平行于所述第一夹紧辊的轴向。
  9. 根据权利要求8所述的剔除装置，其中，所述接料盒包括：
    盒体，所述盒体的上端开放，所述盒体的下端具有卸料口；
    封闭板，活动连接于所述盒体；
    第二弹性件，所述第二弹性件的两端分别与所述盒体和所述封闭板连接，用于将所述封闭板保持在封闭所述卸料口的位置；
    所述收集机构还包括：
    第二驱动单元，安装于所述机架，用于在所述接料盒移动至所述卸料位置时驱动所述封闭板打开。
  10. 根据权利要求8或9所述的剔除装置，其中，所述机架包括：
    安装板，所述安装板的厚度方向沿所述第二方向延伸，所述安装板沿其厚度方向的两侧分别为第一侧和第二侧；
    所述第一输送机构、所述裁切机构和所述第二输送机构均设置于所述第一侧；
    当所述接料盒位于所述接料位置时，所述接料盒位于所述第一侧，当所述接料盒位于所述卸料 位置时，所述接料盒位于所述第二侧。
  11. 根据权利要求1-10任一项所述的剔除装置，其中，所述剔除装置还包括：
    检测机构，用于检测所述极片是否存在缺陷段并发送代表所述极片的缺陷段的起始位置的第一剔除信号以及代表所述极片的缺陷段的终止位置的第二剔除信号；
    所述裁切机构被配置为响应所述第一剔除信号并切断所述极片，以及响应所述第二剔除信号再次切断极片；
    所述第二输送机构被配置为响应所述第一剔除信号并移动至所述工作位置，以及响应所述第二剔除信号并移动至所述非工作位置。
  12. 一种极片加工设备，其中，所述极片加工设备包括：
    如权利要求1-11任一项所述的剔除装置；
    覆合装置，用于将所述极片和隔膜热覆合，设置于所述裁切机构的下游，当所述第二输送机构在所述工作位置时，所述第二输送机构位于所述裁切机构和所述覆合装置之间。
  13. 一种剔除方法，用于剔除极片的缺陷段，其中，所述剔除方法包括：
    检测行进中的极片是否存在缺陷段；
    当检测到所述缺陷段的起始位置时，切断所述极片；
    将一对第一夹紧辊移动至所述极片的输送路径上，使所述极片进入所述一对第一夹紧辊之间，通过所述一对第一夹紧辊夹持并输送所述缺陷段；
    当检测到所述缺陷段的终止位置时，再次切断所述极片，以将所述缺陷段从所述极片上分离；
    将所述一对第一夹紧辊从所述极片的输送路径上移开。
PCT/CN2022/098226 2021-08-31 2022-06-10 剔除装置、极片加工设备以及剔除方法 WO2023029646A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111015194.9 2021-08-31
CN202111015194.9A CN115732641B (zh) 2021-08-31 2021-08-31 剔除装置、极片加工设备以及剔除方法

Publications (1)

Publication Number Publication Date
WO2023029646A1 true WO2023029646A1 (zh) 2023-03-09

Family

ID=85291554

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/098226 WO2023029646A1 (zh) 2021-08-31 2022-06-10 剔除装置、极片加工设备以及剔除方法

Country Status (2)

Country Link
CN (1) CN115732641B (zh)
WO (1) WO2023029646A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116750469A (zh) * 2023-08-09 2023-09-15 安徽统凌科技新能源有限公司 具有筛分功能的极片输送设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117039111B (zh) * 2023-10-10 2024-03-29 宁德时代新能源科技股份有限公司 卷绕装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2320508A1 (de) * 2009-10-30 2011-05-11 ads-tec GmbH Fertigungsanlage für eine Akkuflachzelle und Verfahren zur Herstellung einer Akkuflachzelle
CN103052582A (zh) * 2010-08-19 2013-04-17 小松Ntc株式会社 不良电极卷绕装置
JP2016157514A (ja) * 2015-02-23 2016-09-01 株式会社豊田自動織機 セパレータ材における異常部位の除去装置およびその除去方法
JP2018063752A (ja) * 2016-10-11 2018-04-19 トヨタ自動車株式会社 積層電池製造装置
CN110380130A (zh) * 2019-08-02 2019-10-25 深圳吉阳智能科技有限公司 电芯制备设备和电芯制备方法
CN111697193A (zh) * 2019-03-13 2020-09-22 宁德时代新能源科技股份有限公司 极片处理装置和极片成型系统
CN212042867U (zh) * 2020-04-30 2020-12-01 无锡先导智能装备股份有限公司 裁切送料装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104934627B (zh) * 2015-06-05 2020-02-14 深圳吉阳智云科技有限公司 具有极片坏品剔除的电芯制备系统及方法
CN209993676U (zh) * 2019-06-25 2020-01-24 深圳吉阳智能科技有限公司 剔除缺陷极片的装置
CN110459796B (zh) * 2019-08-16 2023-06-13 宁德时代新能源科技股份有限公司 一种叠片电芯的制备方法、叠片电芯、叠片装置及系统
CN111014422A (zh) * 2019-12-31 2020-04-17 东莞市佳兴自动化设备科技有限公司 锂电池五金模切机及其模切方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2320508A1 (de) * 2009-10-30 2011-05-11 ads-tec GmbH Fertigungsanlage für eine Akkuflachzelle und Verfahren zur Herstellung einer Akkuflachzelle
CN103052582A (zh) * 2010-08-19 2013-04-17 小松Ntc株式会社 不良电极卷绕装置
JP2016157514A (ja) * 2015-02-23 2016-09-01 株式会社豊田自動織機 セパレータ材における異常部位の除去装置およびその除去方法
JP2018063752A (ja) * 2016-10-11 2018-04-19 トヨタ自動車株式会社 積層電池製造装置
CN111697193A (zh) * 2019-03-13 2020-09-22 宁德时代新能源科技股份有限公司 极片处理装置和极片成型系统
CN110380130A (zh) * 2019-08-02 2019-10-25 深圳吉阳智能科技有限公司 电芯制备设备和电芯制备方法
CN212042867U (zh) * 2020-04-30 2020-12-01 无锡先导智能装备股份有限公司 裁切送料装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116750469A (zh) * 2023-08-09 2023-09-15 安徽统凌科技新能源有限公司 具有筛分功能的极片输送设备
CN116750469B (zh) * 2023-08-09 2023-11-28 安徽统凌科技新能源有限公司 具有筛分功能的极片输送设备

Also Published As

Publication number Publication date
CN115732641B (zh) 2024-08-09
CN115732641A (zh) 2023-03-03

Similar Documents

Publication Publication Date Title
WO2023029646A1 (zh) 剔除装置、极片加工设备以及剔除方法
CN110364766B (zh) 模切叠片系统及方法
US8313606B2 (en) Method and apparatus for manufacturing wound electrode assembly for battery
US20210234145A1 (en) Secondary battery electrode production system
EP4376151A1 (en) Thermal composite lamination device and thermal composite lamination method
CN108598547B (zh) 电池制作机
WO2022179621A1 (zh) 电芯及叠片装置
CN204946995U (zh) 二次电池电芯及其卷绕成型系统
EP3813172B1 (en) Automatic replacement device of secondary battery material
WO2023024652A1 (zh) 料带缺陷修复装置
EP4120410A1 (en) Unit cell manufacturing device and method
CN111342107A (zh) 一种热复合高速叠片机
CN114759270A (zh) 电芯成型设备、电芯成型工艺及电芯
US20190058181A1 (en) Integration wrapper capable of laser notching
CN214411247U (zh) 补锂设备
CN215896492U (zh) 一种裁断叠片装置
KR20210126842A (ko) 불량 전극 자동 제거 장치 및 불량 전극 자동 제거 방법
KR102253132B1 (ko) 2차 전지용 단위 셀 제조 방법, 장치 및 시스템
CN211700479U (zh) 一种热复合高速叠片机
KR20220032670A (ko) 이차전지 제조 장치
CN115000488B (zh) 一种叠片设备插片装置及方法
CN209993676U (zh) 剔除缺陷极片的装置
CN111715570A (zh) 剥胶机
KR102534616B1 (ko) 이차전지 테이프 오토 스플라이싱 장비 및 이차전지 테이프 자동 스플라이싱 방법
CN218414715U (zh) 预锂叠片一体设备及锂离子电池

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22862788

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22862788

Country of ref document: EP

Kind code of ref document: A1