WO2023005449A1 - 一种涂布设备 - Google Patents

一种涂布设备 Download PDF

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Publication number
WO2023005449A1
WO2023005449A1 PCT/CN2022/097952 CN2022097952W WO2023005449A1 WO 2023005449 A1 WO2023005449 A1 WO 2023005449A1 CN 2022097952 W CN2022097952 W CN 2022097952W WO 2023005449 A1 WO2023005449 A1 WO 2023005449A1
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WO
WIPO (PCT)
Prior art keywords
coating
drying
substrate
box
drying mechanism
Prior art date
Application number
PCT/CN2022/097952
Other languages
English (en)
French (fr)
Inventor
林银祥
金鹏
郭超
廖能武
亢雪峰
李立军
陈文刚
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
Priority to EP22848058.8A priority Critical patent/EP4238658A4/en
Publication of WO2023005449A1 publication Critical patent/WO2023005449A1/zh
Priority to US18/328,603 priority patent/US20230311155A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/007—After-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0209—Multistage baking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/0413—Heating with air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • H01M4/0402—Methods of deposition of the material
    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0254—Coating heads with slot-shaped outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/02—Sheets of indefinite length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/10—Applying the material on both sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B05D3/0236—Pretreatment, e.g. heating the substrate with ovens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/04—Processes of manufacture in general
    • 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
    • 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

Definitions

  • the present application relates to the field of battery technology, in particular, to a coating device.
  • the embodiment of the present application provides a coating device to improve the problem of poor drying quality of pole pieces.
  • An embodiment of the present application provides a coating device for coating a substrate, the substrate includes opposite first surfaces and second surfaces, including a first coating mechanism, a first drying mechanism, a second coating cloth mechanism, the second drying mechanism and the third drying mechanism.
  • the first coating mechanism is used to coat the first surface.
  • the first drying mechanism is arranged downstream of the first coating mechanism, and the first coating mechanism is used to dry the coating on the first surface.
  • the second coating mechanism is arranged downstream of the first drying mechanism, and the second coating mechanism is used for coating the second surface.
  • the second drying mechanism is arranged downstream of the second coating mechanism, and the second drying mechanism is configured to dry the coating on the second surface.
  • the third drying mechanism is arranged downstream of the second drying mechanism, and the third drying mechanism is configured to dry the coating on the second surface.
  • the coating on the first side of the substrate and the coating on the second side are dried by the corresponding first drying mechanism and the second drying mechanism respectively, and the coating on the first surface is first layer is dried, and then the coating on the second side is dried.
  • the coating on the second side will be dried again, that is, the coating on the first side is Drying is done twice, so that the drying degree of the coating on the first side and the coating on the second side is different, resulting in uneven drying.
  • the third drying mechanism is located at the downstream of the second drying mechanism, and can dry the coating on the second side for a second time, so that the drying degree of the coating on the first side and the coating on the second side tends to be higher. Consistent, reduce the drying difference between the coating on the first side and the coating on the second side, and improve the drying uniformity of the coating on the substrate.
  • the third drying mechanism includes: a heating assembly and a plurality of driving rollers, the plurality of driving rollers are used to convey the substrate, and the substrate is placed between two adjacent A transmission section is formed between the transmission rollers; the heating assembly is disposed between two adjacent and opposite transmission sections and facing the second surface.
  • a plurality of driving rollers can extend the conveying path of the substrate, prolong the drying time of the substrate by the third drying mechanism, and the heating assembly faces the second surface of the conveying section between two adjacent driving rollers Set so that the heat of the heating element is mainly used to dry the coating on the second side of the substrate, reducing the impact on the coating on the first side.
  • the third drying mechanism further includes a box body, and the heating assembly and the plurality of driving rollers are both arranged in the box body; the box body is also provided with a supply fluid The medium enters the air inlet part of the box and the air return part for the fluid medium in the box to be discharged; the third drying mechanism also includes a circulation unit configured to transfer the air from the return air The fluid medium discharged from the air inlet part is introduced into the box body from the air inlet part.
  • the fluid medium discharged from the return air part carries the heat in the box
  • the circulation unit can guide the fluid medium discharged from the return air part into the box from the air inlet part, so that the heat in the box can be fully utilized, reducing energy consumption.
  • the box body is also provided with an inlet for the substrate to pass through the box body and an outlet for the substrate to pass out of the box body;
  • the coating equipment is also Including introduction rollers and export rollers, the introduction rollers are arranged at the entrance, the introduction rollers are configured to guide the substrate from the entrance into the box, and the export rollers are arranged at the exit , the lead-out roller is configured to lead the base material out of the box from the outlet.
  • the setting of the lead-out roller and the lead-in roller can make the substrate smoothly enter the box and move out of the box smoothly, avoiding the substrate from scratching and damaging the substrate when entering and moving out of the box.
  • At least one of the lead-in roller and the lead-out roller is disposed on the box.
  • the substrate is most likely to be unstable when it enters the box and passes out of the box. Therefore, at least one of the lead-in roller and the lead-out roller is arranged in the box, which can improve the penetration of the substrate. Stability of substrate transfer in and out of the box.
  • the coating equipment further includes a filter assembly, the filter assembly is arranged at the air inlet part, and the filter assembly is configured to prevent the air from entering the box from the air inlet part.
  • the fluid medium is filtered.
  • the filter assembly can filter the fluid medium entering the box from the air inlet, so that the fluid medium entering the box is sufficiently clean and improves the safety and drying quality of the drying process.
  • the coating equipment further includes a preheating component, the preheating component is arranged at the air inlet part, and the preheating component is configured to enter the air inlet part into the The fluid medium in the box is preheated.
  • the preheating component is arranged at the air inlet part, and the preheating component is configured to preheat the fluid medium entering the box from the air inlet part, so as to prevent the temperature of the fluid medium entering the box from the air inlet part from being too low, thereby Lowering the temperature in the box affects the drying of the coating on the second surface of the substrate by the third drying mechanism.
  • the coating equipment further includes a blowing part, the blowing part is arranged downstream of the third drying mechanism, and the blowing part is configured to provide a fluid medium to the substrate , to adjust the temperature of the substrate.
  • the blowing part can provide a fluid medium to the substrate to adjust the temperature of the substrate.
  • the blowing part can provide cold air to the substrate and can cool down the dried substrate so that the substrate can be cooled rapidly. In order to enable the substrate to perform the next process and improve production efficiency.
  • cooling down the temperature after drying can also reduce the risk of wrinkling of the substrate in the process of conveying, so as to make the substrate convey smoothly and ensure the stability of substrate conveying speed increase.
  • the coating equipment further includes a cooling box, the cooling box is arranged downstream of the third drying mechanism, and the blowing part is arranged in the cooling box; the cooling A plurality of pulling rollers are arranged in the box, and the plurality of pulling rollers are configured to allow the base material to be wound sequentially along its moving direction.
  • the blowing part is arranged in the cooling box, and the blowing part can provide fluid medium into the cooling box to adjust the temperature of the substrate in the cooling box, reduce the diffusion range of the fluid medium, and quickly adjust the temperature of the substrate.
  • the coating device further includes a tension adjustment mechanism, the tension adjustment mechanism is disposed in the cooling box, and the tension adjustment mechanism is configured to adjust the tension of the substrate.
  • the tension adjusting mechanism is configured to adjust the tension of the base material, so as to balance the tension of the base material and ensure the stable transmission of the base material.
  • Fig. 1 is the structural representation of the coating equipment provided by some embodiments of the present application.
  • Fig. 2 is a schematic structural diagram of a first viewing angle of a third drying mechanism provided by some embodiments of the present application;
  • Fig. 3 is a schematic structural diagram of a second viewing angle of a third drying mechanism provided by some embodiments of the present application.
  • Fig. 4 is a schematic structural diagram of a cooling traction mechanism provided by some embodiments of the present application.
  • Fig. 5 is a cross-sectional view of a second drying mechanism provided in some embodiments of the present application.
  • Fig. 6 is a schematic structural diagram of a first drying mechanism provided by some embodiments of the present application.
  • Icons 1000-coating equipment; 100-first coating mechanism; 200-first drying mechanism; 20-drying room; 201-first drying side; 202-second drying side; 21-drying Component; 22-the first air supply part; 23-the exhaust part; 24-the first air box; 241-the first wall; 242-the first air inlet chamber; 243-the first box wall; 244-the first air supply port; - the first drive unit; 26 - the outer box; 262 - the first entrance; 263 - the first exit; 264 - the first air outlet; 27 - the second air supply part; 28 - the second air box; Second wall; 282-second air inlet chamber; 283-second box wall; 284-second air supply port; 29-second drive unit; 30-return air chamber; 32-first exhaust unit; 300-second Coating mechanism; 400-second drying mechanism; 500-third drying mechanism; 50-heating assembly; 501-heating part; 51-driving roller; 511-first driving roller; 512-second driving roller; 52
  • the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the application is used, or the orientation or positional relationship of this application.
  • Orientations or positional relationships commonly understood by those skilled in the art are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood For the limitation of this application.
  • the terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.
  • “Plurality” in this application refers to two or more (including two).
  • the pole piece mentioned in the embodiment of the present application includes a current collector and an active material layer coated on the surface of the current collector.
  • the active material layer is coated on a part of the current collector.
  • the current collector coated with the active material layer, and the current collector not coated with the active material layer are used as tabs of the pole piece.
  • the pole piece can be a positive pole piece or a negative pole piece. If the pole sheet is a positive electrode sheet, 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 current collector that is not coated with the positive electrode active material layer protrudes from the coated positive electrode.
  • the positive current collector of the active material layer, and the positive current collector not coated with the positive active material layer are used as positive tabs.
  • 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 pole sheet is a negative electrode sheet
  • 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 coated negative electrode
  • the negative electrode current collector of the active material layer, and the negative electrode current collector not coated with the negative electrode active material layer are used as negative electrode tabs.
  • the material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon.
  • pole pieces In the manufacture of pole pieces, many factors need to be considered to ensure the forming quality of the pole piece, such as coating weight, coating density, coating thickness, tape running accuracy and other factors.
  • the active material of the pole piece also needs to be considered The drying quality of the layer.
  • the main factors affecting the drying quality of the active material layer of the pole piece include heating uniformity, insufficient heating, and excessive heating.
  • the opposite first surface and second surface of the current collector of the pole piece are coated with an active material layer, and the first surface is first coated with the active material layer by the first coating mechanism, Downstream of the mechanism, the active material layer on the first surface is dried by the first drying mechanism, and the active material layer is coated on the second surface of the current collector by the second coating mechanism downstream of the first drying mechanism. Downstream of the second coating mechanism, the active material layer on the second surface is dried by the second drying mechanism.
  • the inventors have found that since the active material layer on the first surface and the active material layer on the second surface are dried by their respective drying mechanisms, the active material layer on the first surface is dried first, and then the active material layer on the second surface is dried.
  • the active material layer on the first side can be dried again, that is, the active material layer on the first side is dried twice, The drying degrees of the active material layer on the first surface and the active material layer on the second surface are different, resulting in uneven drying of the pole piece.
  • the embodiment of the present application provides a technical solution, by setting a third drying mechanism downstream of the second drying mechanism, the third drying mechanism is used to dry the coating on the second surface, so that the first Both the active material layer on one side and the active material layer on the second side have been dried twice, so that the drying degrees of the active material layer on the first side and the active material layer on the second side tend to be consistent, reducing the The drying difference between the active material layer on one side and the active material layer on the second side improves the drying uniformity of the active material layer of the pole piece.
  • some embodiments of the present application provide a coating device 1000 for coating a substrate 3000.
  • the substrate 3000 includes opposite first and second surfaces, including a first coating mechanism 100, The first drying mechanism 200 , the second coating mechanism 300 , the second drying mechanism 400 and the third drying mechanism 500 .
  • the first coating mechanism 100 is used to coat the first surface.
  • the first drying mechanism 200 is arranged downstream of the first coating mechanism 100, and the first coating mechanism 100 is used for drying the coating on the first surface.
  • the second coating mechanism 300 is disposed downstream of the first drying mechanism 200, and the second coating mechanism 300 is used for coating the second surface.
  • the second drying mechanism 400 is disposed downstream of the second coating mechanism 300 , and the second drying mechanism 400 is configured to dry the coating on the second surface.
  • the third drying mechanism 500 is disposed downstream of the second drying mechanism 400, and the third drying mechanism 500 is configured to dry the coating on the second surface.
  • the substrate 3000 may be a current collector, and the coating formed by the first coating mechanism 100 and the second coating mechanism 300 on the first surface and the second surface of the substrate 3000 may be an active material layer.
  • the material of the current collector and the material of the active material layer are different.
  • the coating equipment 1000 forms a positive electrode sheet
  • the material of the current collector can be aluminum
  • the active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganate.
  • the coating device 1000 forms a negative electrode sheet
  • the material of the current collector may be copper, and the active material may be carbon or silicon.
  • upstream and downstream refer to the sequence of production, upstream refers to the production sequence first, and downstream refers to the production sequence later, and does not limit the order of the components. space between.
  • the coating on the first side of the substrate 3000 and the coating on the second side are dried by the corresponding first drying mechanism 200 and the second drying mechanism 400 respectively, and the coating on the first side is first Drying, and then drying the coating on the second side, when drying the coating on the second side, the coating on the first side will be dried again, that is, the coating on the first side has been dried twice
  • the second drying makes the drying degree of the coating on the first side and the coating on the second side different, resulting in uneven drying.
  • the third drying mechanism 500 is arranged at the downstream of the second drying mechanism 400, and can carry out secondary drying to the coating on the second surface, so that the coating on the first surface and the coating on the second surface can be dried The degree tends to be consistent, reducing the drying difference between the coating on the first side and the coating on the second side, and improving the drying uniformity of the coating on the substrate 3000.
  • the coating equipment 1000 also includes an unwinding mechanism 600, the unwinding mechanism 600 is arranged upstream of the first coating mechanism 100, and the unwinding mechanism 600 is used for the automatic unwinding of the substrate 3000 and transport.
  • the coating device 1000 further includes a first roller assembly 700 , the first roller assembly 700 is disposed downstream of the unwinding mechanism 600 and upstream of the first coating mechanism 100 .
  • the first roller assembly 700 includes a plurality of first rollers arranged in rotation.
  • the substrate 3000 is wound around the plurality of first rollers in turn.
  • the first roller assembly 700 is used to support the substrate 3000 and realize the transmission of the substrate 3000 .
  • the position of the substrate 3000 may shift along the direction of travel of the substrate 3000, causing the relative position of the substrate 3000 and the coating mechanism to shift, resulting in the coating mechanism Coating on the substrate 3000 was performed with insufficient precision.
  • the coating equipment 1000 also includes an unwinding and correcting mechanism 800, which is arranged downstream of the unwinding mechanism 600 and upstream of the first coating mechanism 100, and the unwinding and correcting mechanism 800 can receive substrate 3000 and adjust the position of the substrate 3000 so that the substrate 3000 can always be within the coating range of the first coating mechanism 100, thereby ensuring the coating of the first surface of the substrate 3000 by the first coating mechanism 100 cloth precision.
  • an unwinding and correcting mechanism 800 which is arranged downstream of the unwinding mechanism 600 and upstream of the first coating mechanism 100, and the unwinding and correcting mechanism 800 can receive substrate 3000 and adjust the position of the substrate 3000 so that the substrate 3000 can always be within the coating range of the first coating mechanism 100, thereby ensuring the coating of the first surface of the substrate 3000 by the first coating mechanism 100 cloth precision.
  • the position of the substrate 3000 may be shifted during the drying process of the first side and the second side of the substrate 3000 and the substrate 3000 may be wrinkled, resulting in the difference between the substrate 3000 and other substrates.
  • the relative position direction of the mechanism is shifted.
  • the coating equipment 1000 further includes a first outlet correction mechanism 900, the first exit correction mechanism 900 is arranged downstream of the first drying mechanism 200 and upstream of the second coating mechanism 300,
  • the first outlet correction mechanism 900 can accept the substrate 3000 whose coating on the first surface has been dried and adjust the position of the substrate 3000 so that the substrate 3000 can always be within the coating range of the second coating mechanism 300, Thus, the coating accuracy of the second coating mechanism 300 on the second surface of the substrate 3000 is ensured.
  • the first outlet deviation correction mechanism 900 can also flatten and remove wrinkles on the substrate 3000 coated on the first surface, so as to maintain the flatness of the coated substrate 3000 .
  • the coating equipment 1000 further includes a second exit deviation correction mechanism 1100, the second exit deviation correction mechanism 1100 is arranged downstream of the second drying mechanism 400, and the second exit deviation correction mechanism 1100 can receive the coating on the second surface
  • the substrate 3000 is dried and the position of the substrate 3000 is adjusted.
  • the second exit deflection correction mechanism 1100 can also flatten and remove wrinkles on the substrate 3000 coated on both the first surface and the second surface, so as to maintain the flatness of the coated substrate 3000 .
  • the coating device 1000 further includes a first traction mechanism 1200, the first traction mechanism 1200 is arranged downstream of the first outlet correction mechanism 900 and upstream of the second coating mechanism 300, the first traction mechanism 1200 uses In order to pull the substrate 3000 from the first exit correction mechanism 900 to the second coating mechanism 300, the first traction mechanism 1200 is also used to form a tension partition between the first exit correction mechanism 900 and the second coating mechanism 300, ensuring that the base Tension balance during material 3000 transmission.
  • the coating equipment 1000 further includes a second traction mechanism 1300, the second traction mechanism 1300 is arranged downstream of the second exit correction mechanism 1100, and the second traction mechanism 1300 is used to draw the substrate from the second exit correction mechanism 1100. Material 3000 to the next station, the second traction mechanism 1300 is also used to form a tension partition between the second exit correction mechanism 1100 and the next station, to ensure the tension balance during the transfer process of the substrate 3000.
  • the third drying mechanism 500 is arranged downstream of the second pulling mechanism 1300, and the second pulling mechanism 1300 is used to pull the substrate 3000 from the second outlet correction mechanism 1100 to the third drying mechanism 500, so that The third drying mechanism 500 performs secondary drying on the coating on the second surface.
  • the coating equipment 1000 also includes a first areal density measuring mechanism 1400, the first areal density measuring mechanism 1400 is arranged downstream of the first coating mechanism 100 and is located at the second coating mechanism Upstream of 300, the first areal density measuring mechanism 1400 is used to realize real-time monitoring of the areal density of the coating on the first surface, and can communicate with the first coating mechanism 100 to realize closed-loop control of coating weight.
  • a first areal density measuring mechanism 1400 the first areal density measuring mechanism 1400 is arranged downstream of the first coating mechanism 100 and is located at the second coating mechanism Upstream of 300, the first areal density measuring mechanism 1400 is used to realize real-time monitoring of the areal density of the coating on the first surface, and can communicate with the first coating mechanism 100 to realize closed-loop control of coating weight.
  • the first areal density measuring mechanism 1400 can be arranged at the downstream of the first drying mechanism 200 for detecting the areal density of the coating on the first surface after drying, and the first areal density measuring mechanism 1400 can also be arranged at the first The downstream of the coating mechanism 100 and the upstream of the first drying mechanism 200 are used to detect the areal density of the coating on the first surface before drying.
  • the coating equipment 1000 also includes a second areal density measurement mechanism 1500, the second areal density measurement mechanism 1500 is arranged downstream of the second coating mechanism 300, and the second areal density measurement mechanism 1500 is used to realize the second The areal density of the coating on the surface is monitored in real time, and can be communicated with the second coating mechanism 300 to realize closed-loop control of the coating weight.
  • the second density measuring mechanism can be arranged downstream of the second coating mechanism 300 and upstream of the second drying mechanism 400, so that the second surface density measuring mechanism 1500 is used to detect the coating on the second surface before drying.
  • the areal density of the layer can also be arranged downstream of the second drying mechanism 400, so that the second areal density measuring mechanism 1500 is used to detect the areal density of the coating on the second surface after drying.
  • the coating equipment 1000 also includes a head deviation correction mechanism 1600, the mechanism between the head deviation correction is arranged downstream of the first surface density measurement mechanism 1400 and upstream of the second coating mechanism 300, and the head deviation correction
  • the mechanism 1600 is used to adjust the position of the substrate 3000 before the second coating mechanism 300 coats the second surface of the substrate 3000.
  • it can be combined with a CCD (Charge-coupled Device, charge-coupled device) measurement system to realize basic Closed-loop control of material 3000 position adjustment.
  • CCD Charge-coupled Device, charge-coupled device
  • the coating equipment 1000 occupies a large area.
  • the coating The devices 1000 are arranged in two rows side by side. As shown in FIG. 1 , the mechanisms upstream of the second coating mechanism 300 are arranged in the lower row, and the mechanisms downstream of the second coating mechanism 300 are arranged in the upper row.
  • the coating equipment 1000 also includes a climbing mechanism 1700, and the climbing mechanism 1700 is arranged downstream of the second coating mechanism 300 and at the bottom of the second drying mechanism 400. upstream.
  • the climbing mechanism 1700 is used to support the substrate 3000 and pull the substrate 3000 from the second coating mechanism 300 to the second drying mechanism 400, so that the substrate 3000 can be smoothly transferred from the second coating mechanism 300 to the second drying mechanism 400. There are 400 places for drying mechanism.
  • the coating equipment 1000 further includes a cooling traction mechanism 1800, the cooling traction mechanism 1800 is arranged downstream of the third drying mechanism 500, and the substrate 3000 dried by the third drying mechanism 500 is dragged and transported. Lower the temperature to ensure that the coated substrate 3000 is conveyed without wrinkling.
  • the coating equipment 1000 when the second areal density measuring mechanism 1500 is arranged downstream of the second drying mechanism 400 and upstream of the third drying mechanism 500, the coating equipment 1000 further includes a third areal density measuring mechanism (not shown in the figure), the 3rd areal density measuring mechanism is arranged on the downstream of the 3rd drying mechanism 500, the 3rd areal density measuring mechanism is used to realize the real-time surface density of the coating on the second surface after the secondary drying. Monitoring can communicate with the second coating mechanism 300 to realize closed-loop control of coating weight.
  • coating equipment 1000 also can not be provided with the third areal density measuring mechanism, the second areal density measuring mechanism 1500 is arranged on the downstream of the third drying mechanism 500, the second areal density measuring The mechanism 1500 is used to realize the real-time monitoring of the areal density of the coating on the second surface after the secondary drying, and can communicate with the second coating mechanism 300 to realize the closed-loop control of the coating weight.
  • the coating equipment 1000 also includes a winding mechanism 1900, the winding mechanism 1900 is arranged downstream of the second surface density measuring mechanism 1500, and the winding mechanism 1900 is used for the first surface and the second surface are coated with Coated substrate 3000 for automatic winding and automatic roll changing.
  • the coating equipment 1000 further includes a winding and deviation correction mechanism 2000, which is arranged downstream of the second areal density measurement mechanism 1500, and the winding and deviation correction mechanism 2000 is used to wind the winding base of the winding mechanism 1900. Adjust the position of the base material 3000 before the base material 3000.
  • the third drying mechanism 500 includes a heating assembly 50 and a plurality of driving rollers 51, and the plurality of driving rollers 51 are used to transport the substrate 3000, and the substrate 3000 is placed between two adjacent The transmission section 3100 is formed between the driving rollers 51; the heating assembly 50 is disposed between two adjacent and opposite transmission sections 3100 and facing the second surface.
  • a plurality of transmission rollers 51 can extend the transmission path of the substrate 3000, prolong the drying time of the substrate 3000 by the third drying mechanism 500, and the heating assembly 50 faces the second transmission section 3100 between two adjacent transmission rollers 51
  • the two sides are arranged so that the heat of the heating component 50 is mainly used to dry the coating on the second side of the substrate 3000, reducing the influence on the coating on the first side.
  • part of the plurality of driving rollers 51 is the first driving roller 511, another part of the plurality of driving rollers 51 is the second driving roller 512, the number of the first driving rollers 511 is multiple, and the second There are multiple driving rollers 512 .
  • the plurality of first transmission rollers 511 and the plurality of second transmission rollers are arranged at intervals along the first direction A, the plurality of first transmission rollers 511 are arranged in a row along the second direction B, and the plurality of second transmission rollers 512 are arranged in a row along the second direction B. Arranged in rows, the first direction A is perpendicular to the second direction B.
  • the substrate 3000 is wound around the first driving roller 511 and the second driving roller 512 sequentially along its conveying direction, and the substrate 3000 forms a conveying section 3100 between two adjacent first driving rollers 511 and second driving rollers 512 .
  • the substrate 3000 is divided into a plurality of conveying sections 3100 arranged at intervals, and at least one heating assembly 50 is arranged between two adjacent conveying sections 3100, so that the heating assembly 50 can simultaneously treat adjacent
  • the coating on the second surface of the two transmission sections is heated, which can improve the heating efficiency.
  • the third drying mechanism 500 includes a plurality of heating assemblies 50 arranged at intervals in the box body 52 along the transport direction of the substrate 3000 , which can improve drying quality and drying efficiency.
  • Each heating assembly 50 includes a plurality of heating parts 501 arranged at intervals, so that the heating assembly 50 can cover a larger area, so that the coverage of the heating assembly 50 in the length direction of the conveying section 3100 is substantially the same as the length of the conveying section 3100 unanimous.
  • the heating part 501 may be a heating resistance wire, an infrared lamp or the like.
  • the third drying mechanism 500 only includes one heating assembly 50 .
  • the heating power of the third drying mechanism 500 can be smaller than the heating power of the first drying mechanism 200 and the heating power of the second drying mechanism 400, so as to reduce the impact of the third drying mechanism 500 on the second drying mechanism.
  • the heat of the third drying mechanism 500 affects the coating on the first side.
  • the heating power of the first drying mechanism 200 and the heating power of the second drying mechanism 400 can be the same or different, and can be selected according to the thickness of the coating on the first surface and the coating on the second surface, the degree of drying, etc. The power of the first drying mechanism 200 and the second drying mechanism 400.
  • the third drying mechanism 500 may not be provided with the driving roller 51 , that is, the heat component is arranged facing the second surface.
  • the third drying mechanism 500 also includes a box body 52, and the heating assembly 50 and a plurality of driving rollers 51 are arranged in the box body 52;
  • the third drying mechanism 500 also includes a circulation unit 53, and the circulation unit 53 is configured to discharge the fluid medium discharged from the return air part 522 from the The air intake part 521 is introduced into the box body 52 .
  • the fluid medium discharged from the return air part 522 carries the heat in the box body 52, and the circulation unit 53 can guide the fluid medium discharged from the return air part 522 into the box body 52 from the air inlet part 521, so that the heat in the box body 52 can be be fully utilized and reduce energy consumption.
  • drying the coating on the second surface of the substrate 3000 in the box 52 can reduce the heat loss of the heating element 50 and make full use of the heat of the heating element 50 .
  • the fluid medium is gas, such as external air, protective gas, and the like.
  • the box body 52 is also provided with an inlet 523 for the base material 3000 to pass through the box body 52 and an outlet 524 for the base material 3000 to pass through the box body 52;
  • the coating device 1000 also includes an import roller 2100 and an outlet roller 2200, the inlet roller is set at the entrance 523, the lead-in roller 2100 is configured to guide the substrate 3000 into the box 52 from the The box 52 is exported.
  • the introduction roller 2100 can make the base material 3000 be transferred from the last station of the third drying mechanism 500 (such as the second pulling mechanism 1300 ) to the third drying mechanism 500 smoothly.
  • the lead-out roller 2200 enables the base material 3000 to be smoothly and smoothly transferred from the third drying mechanism 500 to the next station of the third drying mechanism 500 (such as the cooling traction mechanism 1800 ). Therefore, the setting of the lead-out roller 2200 and the lead-in roller 2100 can make the base material 3000 smoothly enter the box body 52 and move out of the box body 52 smoothly, and reduce the occurrence of scraping and damage of the base material 3000 when entering the box body 52 and moving out of the box body 52 Substrate 3000 Risk.
  • the substrate 3000 is most likely to be unstable during the process of entering the box body 52 and passing through the box body 52. Therefore, in some embodiments, at least one of the lead-in roller 2100 and the lead-out roller 2200 is arranged on the box body 52 , so as to improve the stability of the transfer of the substrate 3000 when the substrate 3000 passes through the box body 52 and passes out of the box body 52 .
  • the lead-in roller 2100 and the lead-out roller 2200 are both arranged on the outer wall of the box body 52, so that the substrate 3000 enters the box body 52 and moves out of the box body 52 smoothly, and reduces the time between the substrate 3000 entering the box body 52 and moving out of the box body. There is a risk of scratching the body 52 and damaging the substrate 3000.
  • the position of the entrance 523 of the box body 52 is higher than that of the exit 524
  • the import roller 2100 is arranged on the outer wall of the box body 52 corresponding to the entrance 523 of the box body 52
  • the outlet roller 2200 is set corresponding to the exit 524 of the box body 52
  • the position of the lead-in roller 2100 is higher than that of the lead-out roller 2200 .
  • the lead-in roller 2100 and the lead-out roller 2200 are rotatably mounted on the box body 52 , which can reduce the frictional force during the conveying process of the substrate 3000 .
  • only one of the lead-in roller 2100 and the lead-out roller 2200 is set on the box body 52, and the other can be set on a device corresponding to other stations, for example, the lead-in roller 2100 is set on the box body 52, and the lead-out roll 2200 can be set in the cooling traction mechanism 1800 downstream of the third drying mechanism 500 , or the lead-in roller 2100 can be set in the second traction mechanism 1300 upstream of the third drying mechanism 500 , and the lead-out roller 2200 can be set in the box body 52 .
  • the coating device 1000 also includes a filter assembly 2300, the filter assembly 2300 is arranged on the air inlet 521, and the filter assembly 2300 is configured to filter the fluid entering the box 52 from the air inlet 521 Media is filtered.
  • the filter assembly 2300 can filter the fluid medium entering the box body 52 from the air inlet 521 , so that the fluid medium entering the box body 52 is clean enough to improve the safety and drying quality of the drying process.
  • the filter assembly 2300 may be a structure such as a filter screen.
  • the coating equipment 1000 further includes a preheating component 2400, the preheating component 2400 is arranged on the air inlet 521, and the preheating component 2400 is configured to preheat the fluid medium entering the box 52 from the air inlet 521 , to prevent the temperature of the fluid medium entering the box 52 from the air inlet 521 from being too low, thereby reducing the temperature in the box 52 and affecting the drying of the coating on the second surface of the substrate 3000 by the third drying mechanism 500 .
  • a preheating component 2400 is arranged on the air inlet 521
  • the preheating component 2400 is configured to preheat the fluid medium entering the box 52 from the air inlet 521 , to prevent the temperature of the fluid medium entering the box 52 from the air inlet 521 from being too low, thereby reducing the temperature in the box 52 and affecting the drying of the coating on the second surface of the substrate 3000 by the third drying mechanism 500 .
  • the third drying mechanism 500 further includes a fresh air outlet 54 through which the circulation unit 53 draws fresh air from the outside, and guides the fresh air into the box body 52 from the air inlet 521 .
  • the preheating component 2400 can only be used to preheat the fresh air drawn from the fresh air port 54 , or can preheat the mixed medium of the fresh air entering from the fresh air port 54 and the fluid medium discharged from the return air part 522 .
  • the preheating component 2400 is arranged downstream of the filter component 2300 , that is, the fresh air is filtered by the filter component 2300 first, and then preheated by the preheating component 2400 .
  • the box body 52 is also provided with an air outlet 525 communicating with the inner space of the box body 52
  • the third drying mechanism 500 also includes an exhaust unit 55, which is used to discharge the air in the box body 52
  • the fluid medium is discharged from the exhaust port 525.
  • the fluid medium discharges the solvent carried by the substrate 3000 during drying and evaporation of the coating, reducing the weight loss rate.
  • the coating device 1000 further includes a blower 1810, the blower 1810 is disposed downstream of the third drying mechanism 500, and the blower 1810 is configured to provide a fluid medium to the substrate 3000, To adjust the temperature of the substrate 3000.
  • the blowing part 1810 is mainly used to reduce the temperature of the substrate 3000.
  • the blowing part 1810 provides cold air to the substrate 3000, and can cool down the dried substrate 3000, so that the substrate 3000 can be cooled rapidly, so that the substrate 3000 Able to carry out the next process and improve production efficiency.
  • cooling down the temperature after drying can also reduce the risk of wrinkling of the substrate 3000 during conveyance, so as to make the conveyance of the substrate 3000 stable and ensure the stability of the speed-up of the conveyance of the substrate 3000 .
  • the coating equipment 1000 also includes a cooling box 1820, the cooling box 1820 is arranged downstream of the third drying mechanism 500, and the blower 1810 is arranged in the cooling box 1820; a plurality of pulling rollers are arranged in the cooling box 1820 1830, a plurality of pulling rollers 1830 are configured for the substrate 3000 to be wound sequentially along its moving direction.
  • the blowing part 1810 is arranged in the cooling box 1820, and the blowing part 1810 can provide a fluid medium to the cooling box 1820, so as to adjust the temperature of the substrate 3000 in the cooling box 1820, reduce the diffusion range of the fluid medium, and quickly adjust the temperature of the substrate 3000. temperature.
  • the cooling box 1820 is provided with a plurality of traction rollers 1830, which can extend the moving path of the substrate 3000 in the box 52, thereby prolonging the temperature adjustment time, thereby ensuring that the temperature of the substrate 3000 is adjusted to the required range.
  • the coating device 1000 further includes a tension adjustment mechanism 1840, the tension adjustment mechanism 1840 is disposed in the cooling box 1820, the tension adjustment mechanism 1840 is configured to adjust the tension of the substrate 3000, so that the tension of the substrate 3000 is balanced, Ensure that the substrate 3000 is transported smoothly.
  • the air blowing part 1810 , the cooling box 1820 , the tension adjusting mechanism 1840 and the plurality of pulling rollers 1830 jointly form the cooling pulling mechanism 1800 of the coating device 1000 .
  • the cooling traction mechanism 1800 further includes a tension sensor 1850, the tension sensor 1850 is arranged in the cooling box 1820, the tension sensor 1850 is used to detect the tension of the base material 3000, and the tension adjustment mechanism 1840 obtains the base material according to the tension sensor 1850 3000 tension signal to adjust the tension of the substrate 3000 so that the tension of the substrate 3000 is balanced and stable transmission can be achieved.
  • the cooling traction mechanism 1800 further includes a tension breaking mechanism 1860 configured to cooperate with one traction roller 1830 of the plurality of traction rollers 1830 to press the substrate 3000 so that the substrate 3000 can be transported along the direction, the substrate 3000 located on both sides of the tension breaking mechanism 1860 can form different tensions to meet the requirement of smooth transmission.
  • the tension breaking mechanism 1860 includes a pressing roller 1861 and a pressing roller driving unit 1862.
  • the pressing roller driving unit 1862 drives the pressing roller 1861 to move in the cooling box 1820 to adjust the peripheral surface of the pressing roller 1861 and the traction roller 1830 that cooperates with the tension breaking mechanism 1860.
  • the distance between the peripheral surfaces of the substrate 3000 is adjusted to adjust the degree of compression of the pressing roller 1861 and the traction roller 1830 to the substrate 3000, thereby adjusting the friction between the substrate 3000 and the driving roller 51, so that the substrate 3000 is located in the tension partition
  • the substrate 3000 on both sides of the mechanism 1860 can have different tensions.
  • the structure of the first drying mechanism 200 and the second drying mechanism 400 can refer to the structure of the third drying mechanism 500 . In some embodiments, the first drying mechanism 200 and the structure of the first drying mechanism 200 may be different from the structure of the third drying mechanism 500 .
  • the first drying mechanism 200 includes a drying chamber 20 and a drying assembly 21 .
  • the drying chamber 20 is used to accommodate the pieces to be dried.
  • the drying chamber 20 has a first drying side 201 facing the pieces to be dried.
  • the drying assembly 21 is disposed on the first drying side 201 , and the drying assembly 21 is configured to dry the coating on the substrate 3000 .
  • the first drying side 201 is also provided with an exhaust part 23, at least one exhaust part 23 is provided between two adjacent first air supply parts 22, and the exhaust part 23 is configured to supply the fluid in the drying chamber 20 The medium exits the drying chamber 20 .
  • the drying component 21 may be a heating resistance wire, an infrared lamp, or the like.
  • the exhaust part 23 can discharge the fluid medium in the drying chamber 20 out of the drying chamber 20.
  • the fluid medium acts on the piece to be dried.
  • the article to be dried is guided between the two first air supply parts 22, so that the heat carried by the fluid medium converges between the two first air supply parts 22, causing the adjacent two first air supply parts 22 to The corresponding part is overheated, so that the parts to be dried are heated unevenly, and the air suction part 23 is arranged between the two first air supply parts 22, so that the fluid medium between the two first air supply parts 22 The heat is discharged and taken away, preventing heat from converging between the two first air supply parts 22, and improving the heating uniformity of the article to be dried.
  • the first air supply part 22 may be a tuyere, an air supply opening, etc.
  • the air exhausting part 23 may be a tuyere, an air exhaust opening, or the like.
  • the first drying mechanism 200 includes a first wall 241 facing the substrate 3000 in the third direction C, and the first air supply part 22 , the drying component 21 and the exhaust part 23 are all arranged on the first wall 241 , the first air supply part 22 , the drying assembly 21 and the exhaust part 23 are all arranged on the side of the first wall 241 facing the drying chamber 20 .
  • the first drying mechanism 200 further includes a first driving unit 25 configured to adjust the distance between the first wall 241 and the item to be dried in the third direction C.
  • the first driving unit 25 can drive the first wall 241 provided with the first air supply part 22 , the drying assembly 21 and the air exhaust part 23 to move, so as to adjust the distance between the first wall 241 and the substrate 3000 in the third direction C , so as to adjust the distance between the drying assembly 21 and the substrate 3000 to meet different heating requirements and improve the heating quality.
  • the first drying mechanism 200 further includes a first air inlet chamber 242, the first air inlet chamber 242 is separated from the drying chamber 20 by the first wall 241, the first air inlet part 521, the drying assembly 21 and the draft part 23 are both arranged on the first wall 241; wherein, the first air supply part 22 is used to supply the fluid medium in the first air inlet chamber 242 into the drying chamber 20.
  • the fluid medium enters the first air inlet chamber 242, it enters the drying chamber 20 from a plurality of first air supply parts 22, so that the fluid medium can be more evenly distributed in the drying chamber 20, thereby improving the heating uniformity of the substrate 3000 .
  • the first air inlet chamber 242 and the drying chamber 20 share the first wall 241 and are separated by the first wall 241 , which can reduce the volume of the first drying mechanism 200 .
  • the first drying mechanism 200 also includes an outer box 26 , and the drying chamber 20 and the first air inlet chamber 242 are both disposed in the outer box 26 .
  • the first drying mechanism 200 includes a first air box 24, the inside of the first air box 24 forms a first air inlet chamber 242, and the first air box 24 includes a first wall 241 and a first box with a first opening.
  • the wall 243 and the first wall 241 cover the first opening so that the first wall 241 and the first box wall 243 jointly define the first air inlet chamber 242 .
  • the first air inlet chamber 242 communicates with the inside of the outer box 26 through the first air supply portion 22 .
  • the first driving unit 25 is mounted on the outer case 26 , and the first driving unit 25 moves the first wall 241 along the third direction C by driving the first bellows 24 to move along the third direction C inside the outer case 26 .
  • the first air box 24 is also provided with a first air supply port 244, the first air supply port 244 communicates with the first air intake chamber 242, and provides fluid medium to the first air intake chamber 242 through the first air supply port 244, and enters the first air intake chamber The fluid medium in 242 enters the drying chamber 20 through the first air supply part 22 .
  • the drying chamber 20 also has a second drying side 202 arranged opposite to the first drying side 201 in the third direction C, and the second drying side 202 is provided with a fluid medium entering the drying chamber 20 A plurality of second air supply parts 27.
  • the first air supply part 22 can make the fluid medium enter the drying chamber 20 from the second drying side 202 of the drying chamber 20, and can accelerate the flow of the fluid medium in the drying chamber 20, thereby accelerating the heat transfer in the drying chamber 20. flow, so that the heat is evenly distributed in the drying chamber 20, and the heating uniformity of the substrate 3000 is improved.
  • the second drying side 202 is located on the side of the substrate 3000 away from the first drying side 201 .
  • the second air supply part 27 may be an air nozzle, an air supply opening, and the like. When the second air supply part 27 is a tuyere, the second air supply part 27 can extend into the drying chamber 20 to reduce the distance from the substrate 3000.
  • the first drying mechanism 200 includes a first wall 241 facing the article to be dried in the third direction C and a second wall 281 arranged opposite to the first wall 241; the first air supply part 22, The drying assembly 21 and the exhaust part 23 are both arranged on the first wall 241, and the second air supply part 27 is arranged on the second wall 281; the drying chamber 20 is located between the first wall 241 and the second wall 281 in the third direction C.
  • the first drying mechanism 200 also includes a second drive unit 29 configured to drive the second wall 281 to move to adjust the distance between the second wall 281 and the first wall 241 in the third direction C.
  • the second driving unit 29 can drive the second wall 281 to move to adjust the distance between the second wall 281 and the first wall 241 in the third direction C, so as to adapt to substrates 3000 of different sizes along the third direction C.
  • the third direction C is consistent with the thickness direction of the substrate 3000 , and the first surface and the second surface are two opposite surfaces of the substrate 3000 in the third direction C, respectively.
  • the second drive unit 29 can be a linear drive mechanism such as an adjusting screw, a linear motor, or an air cylinder.
  • the second drive unit 29 drives the second wall 281 to reciprocate along the third direction C so that the second wall 281 approaches or moves away from the substrate 3000 or the second wall 281.
  • One wall 241 so as to adjust the distance between the second air supply part 27 and the substrate 3000 or the distance between the second wall 281 and the first wall 241 .
  • the second drive unit 29 can be arranged in multiples at intervals, so as to be able to adjust the second wall 281 along the third direction C from multiple positions, especially in the case where the length direction and/or width direction of the second wall 281 are larger.
  • each position in the length direction and/or width direction of the second wall 281 can be aligned with the position of the substrate 3000 in the third direction C.
  • the distances are the same, the distance difference between each position of the base material 3000 and the second air supply part 27 in the third direction C is reduced, the heating uniformity is improved, and thus the product quality is improved.
  • the first drying mechanism 200 includes a second air box 28, the second air box 28 forms a second air inlet chamber 282 inside, and the second air box 28 includes a second wall 281 and a second box with a second opening.
  • the wall 283 and the second wall 281 cover the second opening so that the second wall 281 and the second box wall 283 jointly define a second air inlet chamber 282 .
  • the second air inlet chamber 282 communicates with the inner space of the outer box 26 through the second air supply portion 27 .
  • the second driving unit 29 is mounted on the outer case 26 , and the second driving unit 29 moves the second wall 281 along the third direction C by driving the second bellows 28 to move along the third direction C inside the outer case 26 .
  • the second air box 28 is also provided with a second air supply port 284, the second air supply port 284 communicates with the second air intake chamber 282, provides fluid medium to the second air intake chamber 282 through the second air supply port 284, and enters the second air intake chamber The fluid medium in 282 enters the drying chamber 20 through the second air supply part 27 .
  • the outer case 26 is also provided with the first penetration port 262 for the base material 3000 to penetrate the outer case 26 and the first penetration port 263 for the base material 3000 to pass through the outer case 26, the first penetration port 262 and the first penetration port 263 Both communicate with the inside of the outer box 26, and the substrate 3000 passes through the outer box 26 from the first penetration port 262 and passes out of the outer box 26 from the first penetration port 263. The coating is dried.
  • the first drying mechanism 200 further includes a return air chamber 30 and a circulation unit 53 (not shown in the figure), the return air chamber 30 is configured to accommodate the fluid medium discharged from the exhaust part 23, and the circulation unit 53 It is configured to guide the fluid medium in the return air chamber 30 into the first air inlet chamber 242 .
  • the fluid medium discharged from the exhaust part 23 can be accommodated in the return air chamber 30, and then enter the first air inlet chamber 242 under the action of the circulation unit 53, so that it can enter the drying chamber 20 through the first air supply part 22, and can circulate
  • the heat generated by the drying component 21 in the drying chamber 20 is used to reduce energy consumption.
  • the direction of the solid arrow in Fig. 5 is that the fluid medium entering the drying chamber 20 from the first air supply part 22 acts on the base material 3000 in turn, the exhaust part 23 finally passes through the return air chamber 30 and flows from the first row on the outer box 26
  • the outlet flow path of the tuyeres 264 The direction of the hollow arrow is the path through which the fluid medium in the outer box 26 is directly discharged through the first air outlet 264 .
  • the outer box 26 is also provided with a first air outlet 264 communicating with the inside of the outer box 26, the first drying mechanism 200 also includes a first exhaust unit 32, and the first exhaust unit 32 is used to The fluid medium in the outer box 26 is discharged from the first air outlet 264, and during the process of the first exhaust unit 32 discharging the fluid medium in the outer box 26, the fluid medium will carry the solvent evaporated from the coating of the substrate 3000 Discharge, reduce weight loss rate.
  • the return air chamber 30 is jointly defined by the outer wall of the first box wall 243 , the outer wall of the second box wall 283 and the inner wall of the outer box 26 .
  • the return air chamber 30 communicates with the drying chamber 20, and the fluid medium in the drying chamber 20 can directly enter the return air chamber 30, or can enter the return air chamber 30 through the exhaust part 23, and the fluid medium entering the return air chamber 30 is Driven by the circulation unit 53 , it enters the first air inlet chamber 242 and/or the second air inlet chamber 282 .
  • the circulation unit 53 can make the fluid medium in the air return chamber 30 be discharged through the first air outlet 264 and then introduced into the drying chamber 20 through the first air supply part 22 .

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Abstract

一种电池极片涂布设备。该涂布设备（1000）用于对基材（3000）涂布，基材（3000）包括相对的第一面和第二面，包括第一涂布机构（100）、第一烘干机构（200）、第二涂布机构（300）、第二烘干机构（400）和第三烘干机构（500）。第一涂布机构（100）用于对第一面涂布。第一烘干机构（200）设于第一涂布机构（100）的下游并用于对第一面的涂层烘干。第二涂布机构（300）设于第一烘干机构（200）的下游并用于对第二面涂布。第二烘干机构（400）设于第二涂布机构（300）的下游并被配置为对所述第二面的涂层进行烘干。第三烘干机构（500）设于第二烘干机构（400）的下游，第三烘干机构（500）被配置为对第二面的涂层进行烘干。第三烘干机构（500）能够对第二面的涂层进行二次烘干，以使第一面和第二面的涂层的烘干程度趋于一致，减小第一面和第二面的涂层的烘干差异。

Description

一种涂布设备
相关申请的交叉引用
本申请本申请要求享有于2021年07月30日提交的名称为“一种涂布设备”的中国专利申请202121776631.4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
本申请涉及电池技术领域，具体而言，涉及一种涂布设备。
背景技术
随着锂离子电池在通讯领域、便携式电子产品、电动汽车、航天航空、船舶等应用及逐渐普及，对电池的高续航里程及安全性能的要求愈发强烈，对锂离子动力电池极片涂布工艺也提出了更高的要求，尤其是在对极片的烘干环节，直接影响极片的成型质量。
因此，如何提高对极片的烘干质量成为电池领域亟待解决的问题。
发明内容
本申请实施例提供一种涂布设备，以改善极片的烘干质量较差的问题。
本申请实施例提供一种涂布设备，用于对基材涂布，所述基材包括相对的第一面和第二面，包括第一涂布机构、第一烘干机构、第二涂布机构、第二烘干机构和第三烘干机构。所述第一涂布机构用于对所述第一面进行涂布。所述第一烘干机构设于所述第一涂布机构的下游，所述第一涂布机构用于对所述第一面的涂层进行烘干。所述第二涂布机构设于所述第一烘干机构的下游，所述第二涂布机构用于对所述第二面进行涂布。所述第二烘干机构设于所述第二涂布机构的下游，所述第二烘干机构被配置为对所述第二面的涂层进行烘干。所述第三烘干机构设于所述第二烘干机构的下游，所述第三烘干机构被配置为对所述第二面的涂层进行烘干。
上述技术方案中，由于基材的第一面的涂层和第二面的涂层分别通过各自对应的第一烘干机构和第二烘干机构进行烘干，且先对第一面的涂层进行烘干，再对第二面的涂层进行烘干，在对第二面的涂层进行烘干时，第一面的涂层会被再次烘干，即第一面的涂层进行了两次烘干，使得第一面的涂层和第二面的涂层烘干程度不同，造成烘干不均。第三烘干机构设于位于第二烘干机构的下游，能够对第二面的涂层进行二次烘干，以使第一面的涂层和第二面的涂层的烘干程度趋于一致，减小第一面的涂层和第二面的涂层的烘干差异，提高基材的涂层烘干的均匀性。
在本申请的一些实施例中，所述第三烘干机构包括：加热组件和多个传动辊，所述多个传动辊用于传送所述基材，所述基材在相邻的两个传动辊之间形成传送段；所述加热组件设置于相邻且相对的两个传送段之间并面向所述第二面设置。
上述技术方案中，多个传动辊能够延长基材的传送路径，延长第三烘干机构对基材的烘干时间，加热组件面向相邻的两个传动辊之间的传送段的第二面设置，以使加热组件的热量主要用于烘干基材的第二面的涂层，减少对第一面的涂层的影响。
在本申请的一些实施例中，所述第三烘干机构还包括箱体，所述加热组件和所述多个传动辊均设置于所述箱体内；所述箱体上还设有供流体介质进入所述箱体内的进风部和供所述箱体内的流体介质排出的回风部；所述第三烘干机构还包括循环单元，所述循环单元被配置为将从所述回风部排出的流体介质从所述进风部导入所述箱体。
上述技术方案中，回风部排出的流体介质携带箱体内的热量，循环单元能够将从回风部排出的流体介质从进风部导入箱体内，以使箱体内的热量能够被充分利用，减少能耗。
在本申请的一些实施例中，所述箱体还设有供所述基材穿入所述箱体的入口和供所述基材穿出所述箱体的出口；所述涂布设备还包导入辊和导出辊，所述导入辊设置于所述入口处，所述导入辊被配置为将所述基材从所述入口导入所述箱体，所述导出辊设置于所述出口处，所述导出辊被 配置为将所述基材从所述出口导出所述箱体。
上述技术方案中，导出辊和导入辊的设置能够使基材平稳顺利进入箱体和平稳顺利移出箱体，避免基材在进入箱体和移出箱体时出现刮碰的，损伤基材。
在本申请的一些实施例中，所述导入辊和所述导出辊中至少一者设置于所述箱体。
上述技术方案中，基材在进入箱体和穿出箱体的时是最容易出现传送不稳定的情况，因此，导入辊和导出辊中的至少一者设置于箱体，能够提高基材穿入箱体和穿出箱体时基材传送的稳定性。
在本申请的一些实施例中，所述涂布设备还包括过滤组件，所述过滤组件设置于所述进风部，所述过滤组件被配置为对从所述进风部进入所述箱体的流体介质进行过滤。
上述技术方案中，过滤组件能够对从进风部进入箱体的流体介质进行过滤，以使进入箱体内的流体介质足够清洁，提高烘干工艺的安全性和烘干质量。
在本申请的一些实施例中，所述涂布设备还包括预热组件，所述预热组件设置于所述进风部，所述预热组件被配置为对所述进风部进入所述箱体的流体介质进行预热。
上述技术方案中，预热组件设置于进风部，预热组件被配置为对进风部进入箱体的流体介质进行预热，避免从进风部进入箱体的流体介质温度过低，从而降低箱体内的温度，影响第三烘干机构对基材的第二面的涂层进行烘干。
在本申请的一些实施例中，所述涂布设备还包括吹风部，所述吹风部设置于所述第三烘干机构的下游，所述吹风部被配置为向所述基材提供流体介质，以调节所述基材的温度。
上述技术方案中，吹风部能够向基材提供流体介质，以调节基材的温度，比如吹风部向基材提供冷气，能够对完成烘干后的基材进行降温，以使基材快速冷却，以使基材能够执行下一工序，提高生产效率。且对完成烘干后的进行降温还能降低基材传送过程打皱的风险，以使基材传送平稳，确保基材传送提速的平稳性。
在本申请的一些实施例中，所述涂布设备还包括冷却箱，所述冷却箱设置于所述第三烘干机构的下游，所述吹风部设置于所述冷却箱内；所述冷却箱内设有多个牵引辊，所述多个牵引辊被配置为供所述基材沿其移动方向依次缠绕。
上述技术方案中，吹风部设置在冷却箱内，吹风部能够向冷却箱内提供流体介质，以在冷却箱内调节基材的温度，缩小流体介质的扩散范围，能够快速调节基材的温度。冷却箱内设有多个牵引辊，能够延长基材在箱体内的移动路径，从而延长温度调节时间，从而保证基材的温度调节至需要的范围。
在本申请的一些实施例中，所述涂布设备还包括张力调节机构，所述张力调节机构设置于所述冷却箱内，所述张力调节机构被配置为调节所述基材的张力。
上述技术方案中，张力调节机构被配置为调节基材的张力，以使基材张力均衡，保证基材传送平稳。
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为本申请一些实施例提供的涂布设备的结构示意图；
图2为本申请一些实施例提供的第三烘干机构的第一视角结构示意图；
图3为本申请一些实施例提供的第三烘干机构的第二视角结构示意图；
图4为本申请实一些实施例提供的冷却牵引机构的结构示意图；
图5为本申请一些实施例提供的第二烘干机构的剖视图；
图6为本申请一些实施例提供的第一烘干机构的结构简图。
图标：1000-涂布设备；100-第一涂布机构；200-第一烘干机构；20-烘干室；201-第一烘干侧；202-第二烘干侧；21-烘干组件；22-第一供风部；23-抽风部；24-第一风箱；241-第一壁；242-第一进风室；243-第一箱壁；244-第一供风口；25-第一驱动单元；26-外箱；262-第一穿入口；263-第一穿出口；264-第一排风口；27-第二供风部；28-第二风箱；281-第二壁；282-第二进风室；283-第二箱壁；284-第二供风口；29-第二驱动单元；30-回风室；32-第一排风单元；300-第二涂布机构；400-第二烘干机构；500-第三烘干机构；50-加热组件；501-加热部；51-传动辊；511-第一传动辊；512-第二传动辊；52-箱体；521-进风部；522-回风部；523-入口；524-出口；525-排风口；53-循环单元；54-新风口；55-排风单元；600-放卷机构；700-第一过辊组件；800-放卷纠偏机构；900-第一出口纠偏机构；1100-第二出口纠偏机构；1200-第一牵引机构；1300-第二牵引机构；1400-第一面密度测量机构；1500-第二面密度测量机构；1600-机头纠偏机构；1700-爬坡机构；1800-冷却牵引机构；1810-吹风部；1820-冷却箱；1830-牵引辊；1840-张力调节机构；1850-张力传感器；1860-张力隔断机构；1861-压辊；1862-压辊驱动单元；1900-收卷机构；2000-收卷纠偏机构；2100-导入辊；2200-导出辊；2300-过滤组件；2400-预热组件；3000-基材；3100-传送段；A-第一方向；B-第二方向；C-第三方向。
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、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。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。
因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。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。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
在本申请实施例的描述中，需要说明的是，指示方位或位置关系为基于附图所示的方位或位置关系，或者是该申请产品使用时惯常摆放的方位或位置关系，或者是本领域技术人员惯常理解的方位或位置关系，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”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
本申请中出现的“多个”指的是两个以上(包括两个)。
本申请实施例提到的极片包括集流体和涂覆于集流体表面的活性物质层，活性物质层涂覆于集流体的部分区域，未涂覆活性物质层的集流体凸出于已涂覆活性物质层的集流体，未涂敷活性物质层的集流体作为极片的极耳。极片可以是正极片，也可以是负极片。若极片为正极片，正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。若是极片为负极片，负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为负极极耳。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。
在极片制造需要考虑多方面因素，以保证极片的成型质量，比如涂布重量、涂布密度、涂布厚度、走带精度等因素，除此之外，还需要考虑极片的活性物质层的烘干质量。
影响极片的活性物质层的烘干质量的主要因素包括加热的均匀性、加热不够、过度加热。
一般地，极片的集流体的相对的第一面和第二面均涂布有活性物质层，且是先通过第一涂布机构对第一面涂布活性物质层，在第一涂布机构的下游通过第一烘干机构对第一面的活性物质层进行烘干，在第一烘干机构的下游通过第二涂布机构在集流体的第二面涂布活性物质层，在第二涂布机构的下游通过第二烘干机构对第二面的活性物质层进行烘干。发明人发现，由于第一面的活性物质层和第二面的活性物质层分别通过各自对应的烘干机构进行烘干，且先对第一面的活性物质层烘干，再对第二面的活性物质层进行烘干，在对第二面的活性物质层进行烘干时，第一面的活性物质才能会被再次烘干，即第一面的活性物质层进行了两次烘干，使得第一面的活性物质层和第二面的活性物质层的烘干程度不同，造成极片烘干不均。
基于此，本申请实施例提供一种技术方案，通过在第二烘干机构的下游设置第三烘干机构，第三烘干机构用于对第二面的涂层进行烘干，以使第一面的活性物质层和第二面的活性物质层均进行了二次烘干，以使第一面的活性物质层和第二面的活性物质层的烘干程度趋于一致，减小第一面的活性物质层和第二面的活性物质层的烘干差异，提高极片的活性物质层烘干的均匀性。
本申请实施例描述的技术方案适用于涂布设备以及需要使用烘干技术或者加热技术的其他产品。
如图1所示，本申请一些实施例提供一种涂布设备1000，用于对基材3000涂布，基材3000包括相对的第一面和第二面，包括第一涂布机构100、第一烘干机构200、第二涂布机构300、第二烘干机构400和第三烘干机构500。第一涂布机构100用于对第一面进行涂布。第一烘干机构200设于第一涂布机构100的下游，第一涂布机构100用于对第一面的涂层进行烘干。第二涂布机构300设于第一烘干机构200的下游，第二涂布机构300用于对第二面进行涂布。第二烘干机构400设于第二涂布机构300的下游，第二烘干机构400被配置为对第二面的涂层进行烘干。第三烘干机构500设于第二烘干机构400的下游，第三烘干机构500被配置为对第二面的涂层进行烘干。
本申请实施例以用于涂布形成极片的涂布设备1000为例对相关结构进行介绍。因此，基材3000可以是集流体，第一涂布机构100和第二涂布机构300在基材3000的第一面和第二面涂布形成涂层可以是活性物质层。根据极片的极性不同，集流体的材质和活性物质层的材质有所不同。若涂布设备1000形成的是正极片，则集流体的材料可以为铝，活性物质可以为钴酸锂、磷酸铁锂、三元锂或锰酸锂等。若涂布设备1000形成的是负极片，则集流体的材料可以为铜，活性物质可以为碳或硅等。
本申请实施例中上文、下文中所提及的“上游”以及“下游”指的是生产顺序的先后，上游是指生产顺序在先，下游是指生产顺序在后，并非限定各部件之间的空间位置。
由于基材3000的第一面的涂层和第二面的涂层分别通过各自对应的第一烘干机构200和第二烘干机构400进行烘干，且先对第一面的涂层进行烘干，再对第二面的涂层进行烘干，在对第二面的涂层进行烘干时，第一面的涂层会被再次烘干，即第一面的涂层进行了两次烘干，使得第一面的涂层和第二面的涂层烘干程度不同，造成烘干不均。第三烘干机构500设于位于第二烘干机构400的下游，能够对第二面的涂层进行二次烘干，以使第一面的涂层和第二面的涂层的烘干程度趋于一致，减小第一面的涂层和第二面的涂层的烘干差异，提高基材3000的涂层烘干的均匀性。
请继续参见图1，在一些实施例中，涂布设备1000还包括放卷机构600，放卷机构600设置于第一涂布机构100的上游，放卷机构600用于基材3000自动放卷及走带。
在一些实施例中，涂布设备1000还包括第一过辊组件700，第一过辊组件700设置于放卷机构600的下游并设置于第一涂布机构100的上游。第一过辊组件700包括转动设置的多个第一过辊，基材3000依次绕设于多个第一过辊，第一过辊组件700用于支撑基材3000并实现基材3000传动。
由于设备的制造误差和安装误差存在，沿基材3000的走带方向，基材3000的位置存在偏移的可能，使得基材3000和涂布机构的相对位置发生偏移，导致涂布机构在基材3000上的进行涂布精度不够。
在一些实施例中，涂布设备1000还包括放卷纠偏机构800，放卷纠偏机构800设置于放卷机构600的下游并设置于第一涂布机构100的上游，放卷纠偏机构800能够接收基材3000并调节基材3000的位置，以使基材3000能够始终位于第一涂布机构100的涂布范围之内，从而保证第一涂布机构100对基材3000的第一面的涂布精度。
由于设备的制造误差和安装误差存在，以及基材3000的第一面和第二面烘干过程中基材3000的位置可能会发生偏移以及基材3000可能产生褶皱，导致基材3000与其他机构的相对位置方向偏移。
基于此，在一些实施例中，涂布设备1000还包括第一出口纠偏机构900，第一出口纠偏机构900设置于第一烘干机构200的下游并设置于第二涂布机构300的上游，第一出口纠偏机构900能够接受第一面的涂层被烘干的基材3000并调节基材3000的位置，以使基材3000能够始终位于第二涂布机构300的涂布范围之内，从而保证第二涂布机构300对基材3000的第二面的涂布精度。第一出口纠偏机构900还能对第一面涂布有涂层的基材3000进行展平除皱，以保持涂布后的基材3000的平整性。
在一些实施例中，涂布设备1000还包括第二出口纠偏机构1100，第二出口纠偏机构1100设置于第二烘干机构400的下游，第二出口纠偏机构1100能够接收第二面的涂层被烘干的基材3000并调节基材3000的位置。第二出口纠偏机构1100还能对第一面和第二面均涂布有涂层的基材3000进行展平除皱，以保持涂布后的基材3000的平整性。
极片成型的工序较多，基材3000的传动路径较长，在基材3000的传动路径上，基材3000存在的张力不均的可能。
在一些实施例中，涂布设备1000还包括第一牵引机构1200，第一牵引机构1200设置于第一出口纠偏机构900的下游并位于第二涂布机构300的上游，第一牵引机构1200用于从第一出口纠偏机构900向第二涂布机构300牵引基材3000，第一牵引机构1200还用于在第一出口纠偏机构900和第二涂布机构300之间形成张力隔断，确保基材3000传送过程中的张力均衡。
在一些实施例中，涂布设备1000还包括第二牵引机构1300，第二牵引机构1300设置于第二出口纠偏机构1100的下游，第二牵引机构1300用于从第二出口纠偏机构1100牵引基材3000至下一工位，第二牵引机构1300还用于在第二出口纠偏机构1100和下一工位之间形成张力隔断，确保基材3000传送过程中的张力均衡。
在一些实施例中，第三烘干机构500设置于第二牵引机构1300的下游，第二牵引机构1300用于从第二出口纠偏机构1100牵引基材3000至第三烘干机构500，以使第三烘干机构500对第二面的涂层进行二次烘干。
为保证涂布质量，在一些实施例中，涂布设备1000还包括第一面密度测量机构1400，第一面密度测量机构1400设置于第一涂布机构100的下游并位于第二涂布机构300的上游，第一面密度测量机构1400用于实现第一面的涂层的面密度实时监控，可与第一涂布机构100通信连接，实现涂布重量的闭环控制。
其中，第一面密度测量机构1400可以设置于第一烘干机构200的下游用于检测烘干后的第一面的涂层的面密度，第一面密度测量机构1400也可以设置于第一涂布机构100的下游且设置于第一烘干机构200的上游，用于检测烘干前的第一面的涂层的面密度。
在一些实施例中，涂布设备1000还包括第二面密度测量机构1500，第二面密度测量机构1500设置于第二涂布机构300的下游，第二面密度测量机构1500用于实现第二面的涂层的面密度实时监控，可与第二涂布机构300通信连接，实现涂布重量的闭环控制。
其中，第二密度测量机构可以设置于第二涂布机构300的下游并位于第二烘干机构400的上游，以使第二面密度测量机构1500用于检测烘干前的第二面的涂层的面密度。第二面密度测量 机构1500也可以设置于第二烘干机构400的下游，以使第二面密度测量机构1500用于检测烘干后的第二面的涂层的面密度。
在一些实施例中，涂布设备1000还包括机头纠偏机构1600，机头纠偏之间机构设置于第一面密度测量机构1400的下游并设置于第二涂布机构300的上游，机头纠偏机构1600用于在第二涂布机构300对基材3000的第二面进行涂布之前对基材3000进行位置调整，同时可与CCD(Charge-coupled Device，电荷耦合器件)测量系统，实现基材3000位置调整的闭环控制。
由于极片成型的工序较多、基材3000较长，使得涂布设备1000占地面积较大，为避免涂布设备1000的各个装置沿某一个方向布置，在一些实施例中，将涂布设备1000布置成并列的两排。如图1所示，第二涂布机构300上游的机构设置于下排，第二涂布机构300下游的机构设置于上排。为使得基材3000能够平稳地从下排传送至上排，涂布设备1000还包括爬坡机构1700，爬坡机构1700设置于第二涂布机构300的下游并设置于第二烘干机构400的上游。爬坡机构1700用于支撑基材3000并将基材3000从第二涂布机构300向第二烘干机构400牵引，以使基材3000能够平稳地从第二涂布机构300传送至第二烘干机构400处。
在一些实施例中，涂布设备1000还包括冷却牵引机构1800，冷却牵引机构1800设置于第三烘干机构500的下游，对经过第三烘干机构500干燥后的基材3000进行牵引传送及降温，确保涂布有涂层的基材3000传送不打皱。
在一些实施例中，在第二面密度测量机构1500设置于第二烘干机构400的下游且位于第三烘干机构500的上游的情况下，涂布设备1000还包括第三面密度测量机构(图中未示出)，第三面密度测量机构设置于第三烘干机构500的下游，第三面密度测量机构用于实现二次烘干后的第二面的涂层的面密度实时监控，可与第二涂布机构300通信连接，实现涂布重量的闭环控制。
请参见图1，在一些实施例中，涂布设备1000也可以不设置第三面密度测量机构，将第二面密度测量机构1500设置于第三烘干机构500的下游，第二面密度测量机构1500用于实现二次烘干后的第二面的涂层的面密度实时监控，可与第二涂布机构300通信连接，实现涂布重量的闭环控制。
在一些实施例中，涂布设备1000还包括收卷机构1900，收卷机构1900设置于第二面密度测量机构1500的下游，收卷机构1900用于第一面和第二面均涂布有涂层的基材3000的自动收卷及自动换卷。
在一些实施例中，涂布设备1000还包括收卷纠偏机构2000，收卷纠偏机构2000设置于第二面密度测量机构1500的下游，收卷纠偏机构2000用于在收卷机构1900收卷基材3000之前对基材3000进行位置调整。
如图2所示，在一些实施例中，第三烘干机构500包括加热组件50和多个传动辊51，多个传动辊51用于传送基材3000，基材3000在相邻的两个传动辊51之间形成传送段3100；加热组件50设置于相邻且相对的两个传送段3100之间并面向第二面设置。
多个传动辊51能够延长基材3000的传送路径，延长第三烘干机构500对基材3000的烘干时间，加热组件50面向相邻的两个传动辊51之间的传送段3100的第二面设置，以使加热组件50的热量主要用于烘干基材3000的第二面的涂层，减少对第一面的涂层的影响。
在一些实施例中，多个传动辊51中的部分为第一传动辊511，多个传动辊51中的另一部分为第二传动辊512，第一传动辊511的数量为多个，第二传动辊512的数量为多个。多个第一传动辊511和多个第二传动沿第一方向A间隔布置，多个第一传动辊511沿第二方向B成排布置，多个第二传动辊512沿第二方向B成排布置，第一方向A垂直第二方向B。基材3000沿其传送方向依次缠绕第一传动辊511和第二传动辊512，基材3000在相邻的两个第一传动辊511和第二传动辊512之间形成传送段3100。这样沿第二方向B，基材3000被划分为多个间隔布置的传送段3100，相邻的两个传送段3100之间设置至少一个加热组件50，则该加热组件50能够同时对相邻的两个传动段的第二面的涂层加热，能够提高加热效率。
在一些实施例中，第三烘干机构500包括多个加热组件50，多个加热组件50沿基材3000 的传送方向间隔布置于箱体52内，能够提高烘干质量和烘干效率。
每个加热组件50包括间隔布置的多个加热部501，以使加热组件50能够覆盖较大的范围，以使加热组件50在传送段3100的长度方向上的覆盖范围与传送段3100的长度基本一致。加热部501可以是加热电阻丝、红外灯管等。
当然，第三烘干机构500也仅包括一个加热组件50。
在一些实施例中，第三烘干机构500的加热功率可以小于第一烘干机构200的加热功率和第二烘干机构400的加热功率，以减小第三烘干机构500在对第二面的涂层进行二次烘干时，第三烘干机构500的热量对第一面的涂层的影响。第一烘干机构200的加热功率和第二烘干机构400的加热功率可以相同也可以不同，可以根据第一面的涂层和第二面的涂层的厚度、烘干程度需求等选择对应功率的第一烘干机构200和第二烘干机构400。
在一些实施例中，第三烘干机构500也可以不设置传动辊51，即热组件面向第二面设置。
在一些实施例中，第三烘干机构500还包括箱体52，加热组件50和多个传动辊51均设置于箱体52内；箱体52上还设有供流体介质进入箱体52内的进风部521和供箱体52内的流体介质排出的回风部522；第三烘干机构500还包括循环单元53，循环单元53被配置为将从回风部522排出的流体介质从进风部521导入箱体52。回风部522排出的流体介质携带箱体52内的热量，循环单元53能够将从回风部522排出的流体介质从进风部521导入箱体52内，以使箱体52内的热量能够被充分利用，减少能耗。此外，在箱体52内对基材3000第二面的涂层进行烘干能够减少加热组件50的热量的流失，充分利用加热组件50的热量。
在本申请实施例中，流体介质为气体，比如外部空气、保护气体等。
在一些实施例中，箱体52还设有供基材3000穿入箱体52的入口523和供基材3000穿出箱体52的出口524；涂布设备1000还包导入辊2100和导出辊2200，入辊设置于入口523处，导入辊2100被配置为将基材3000从入口523导入箱体52，导出辊2200设置于出口524处，导出辊2200被配置为将基材3000从出口524导出箱体52。
导入辊2100能够使基材3000从第三烘干机构500的上一个工位(比如第二牵引机构1300)平稳顺利地传送至第三烘干机构500。导出辊2200能够使基材3000从第三烘干机构500平稳顺利地传送至第三烘干机构500的下一工位(比如冷却牵引机构1800)。因此，导出辊2200和导入辊2100的设置能够使基材3000平稳顺利进入箱体52和平稳顺利移出箱体52，降低基材3000在进入箱体52和移出箱体52时出现刮碰而损伤基材3000的风险。
基材3000在进入箱体52和穿出箱体52的过程是最容易出现传送不稳定的情况，因此，在一些实施例中，导入辊2100和导出辊2200中至少一者设置于箱体52，以提高基材3000穿入箱体52和穿出箱体52时基材3000传送的稳定性。
在一些实施例中，导入辊2100和导出辊2200均设置于箱体52的外壁，以使基材3000顺利进入箱体52和移出箱体52，降低基材3000在进入箱体52和移出箱体52时出现刮碰，而损伤基材3000的风险。如图1、图2所示，箱体52的入口523位置高于出口524，导入辊2100对应箱体52的入口523设置于箱体52的外壁，导出辊2200对应箱体52的出口524设置于箱体52的外壁，导入辊2100的位置高于导出辊2200的位置。
导入辊2100和导出辊2200转动安装于箱体52，能够减小基材3000传送过程中的摩擦力。
在另一些实施例中，导入辊2100和导出辊2200中只有一者设置于箱体52，另一者可以设置于其他工位对应的装置，比如，导入辊2100设置于箱体52，导出辊2200可以设置于第三烘干机构500下游的冷却牵引机构1800，或者导入辊2100设置于第三烘干机构500上游的第二牵引机构1300，导出辊2200可以设置于箱体52。
如图3所示，在一些实施例中，涂布设备1000还包括过滤组件2300，过滤组件2300设置 于进风部521，过滤组件2300被配置为对从进风部521进入箱体52的流体介质进行过滤。过滤组件2300能够对从进风部521进入箱体52的流体介质进行过滤，以使进入箱体52内的流体介质足够清洁，提高烘干工艺的安全性和烘干质量。过滤组件2300可以是滤网等结构。
在一些实施例中，涂布设备1000还包括预热组件2400，预热组件2400设置于进风部521，预热组件2400被配置为对进风部521进入箱体52的流体介质进行预热，避免从进风部521进入箱体52的流体介质温度过低，从而降低箱体52内的温度，影响第三烘干机构500对基材3000的第二面的涂层进行烘干。
在一些实施例中，第三烘干机构500还包括新风口54，循环单元53通过新风口54从外部抽取新风，并将新风从进风部521导入箱体52内。预热组件2400可以仅仅用于对从新风口54抽取的新风进行预热，也可以对从新风口54进入的新风和从回风部522排出的流体介质的混合介质进行预热。其中，预热组件2400设置于过滤组件2300的下游，即新风先经过过滤组件2300过滤，再经过预热组件2400预热。
在一些实施例中，箱体52还设有与箱体52内部空间连通的排风口525，第三烘干机构500还包括排风单元55，排风单元55用于将箱体52内的流体介质从排风口525排出，在排风单元55排出箱体52内的流体介质的过程中，流体介质将携带基材3000的涂层烘干蒸发的溶剂排出，降低失重率。
如图4所示，在一些实施例中，涂布设备1000还包括吹风部1810，吹风部1810设置于第三烘干机构500的下游，吹风部1810被配置为向基材3000提供流体介质，以调节基材3000的温度。吹风部1810主要用于降低基材3000的温度，比如吹风部1810向基材3000提供冷气，能够对完成烘干后的基材3000进行降温，以使基材3000快速冷却，以使基材3000能够执行下一工序，提高生产效率。且对完成烘干后的进行降温还能降低基材3000传送过程打皱的风险，以使基材3000传送平稳，确保基材3000传送提速的平稳性。
在一些实施例中，涂布设备1000还包括冷却箱1820，冷却箱1820设置于第三烘干机构500的下游，吹风部1810设置于冷却箱1820内；冷却箱1820内设有多个牵引辊1830，多个牵引辊1830被配置为供基材3000沿其移动方向依次缠绕。吹风部1810设置在冷却箱1820内，吹风部1810能够向冷却箱1820内提供流体介质，以在冷却箱1820内调节基材3000的温度，缩小流体介质的扩散范围，能够快速调节基材3000的温度。冷却箱1820内设有多个牵引辊1830，能够延长基材3000在箱体52内的移动路径，从而延长温度调节时间，从而保证基材3000的温度调节至需要的范围。
在一些实施例中，涂布设备1000还包括张力调节机构1840，张力调节机构1840设置于冷却箱1820内，张力调节机构1840被配置为调节基材3000的张力，以使基材3000张力均衡，保证基材3000传送平稳。
在一些实施例中，吹风部1810、冷却箱1820、张力调节机构1840和多个牵引辊1830共同形成涂布设备1000的冷却牵引机构1800。
在一些实施例中，冷却牵引机构1800还包括张力传感器1850，张力传感器1850设置于冷却箱1820内，张力传感器1850用于检测基材3000的张力，张力调节机构1840根据张力传感器1850获取的基材3000的张力信号，调节基材3000的张力，以使基材3000张力均衡，能够实现稳定传送。
在一些实施例中，冷却牵引机构1800还包括张力隔断机构1860，张力隔断机构1860被配置为与多个牵引辊1830中的一个牵引辊1830配合压紧基材3000，以沿基材3000的传送方向，基材3000位于张力隔断机构1860两侧的基材3000能够形成不同张力，以满足平稳传送需求。张力隔断机构1860包括压辊1861和压辊驱动单元1862，压辊驱动单元1862在冷却箱1820内驱动压辊1861移动，以调节压辊1861的周面和与张力隔断机构1860配合的牵引辊1830的周面之间的距离，从而调节压辊1861和该牵引辊1830对基材3000的压紧程度，从而调节基材3000和传动辊51之间的摩擦力，以使基材3000位于张力隔断机构1860两侧的基材3000能够形成不同张力。
在一些实施例中，第一烘干机构200和第二烘干机构400的结构可以参照第三烘干机构 500的结构。在一些实施例中，第一烘干机构200和第一烘干机构200的结构可以与第三烘干机构500结构不同。
比如，如图5、图6所示，在一些实施例中，第一烘干机构200包括烘干室20和烘干组件21。烘干室20用于容纳待烘干件，烘干室20具有面向待烘干件的第一烘干侧201，第一烘干侧201设有供流体介质进入烘干室20的多个第一供风部22。烘干组件21设置于第一烘干侧201，烘干组件21被配置为烘干基材3000上的涂层。其中，第一烘干侧201还设有抽风部23，相邻的两个第一供风部22之间设有至少一个抽风部23，抽风部23被配置为供烘干室20内的流体介质排出烘干室20。
烘干组件21可以是加热电阻丝、红外灯管等。
抽风部23能够将烘干室20内的流体介质排出烘干室20，当从相邻的两个第一供风部22向烘干室20内提供流体介质，流体介质作用于待烘干件后被待烘干件向两个第一供风部22之间引导，使得流体介质携带的热量在两个第一供风部22之间汇聚，造成相邻的两个第一供风部22之间对应的部分被过度加热，使得待烘干件各处加热不均，抽风部23设置在两个第一供风部22之间能够将两个第一供风部22之间的流体介质排出并带走热量，避免热量在两个第一供风部22之间汇聚，提高待烘干件的加热均匀性。
第一供风部22可以为风嘴、供风口等，抽风部23可以为风嘴、抽风口等。
在一些实施例中，第一烘干机构200包括在第三方向C上面向基材3000第一壁241，第一供风部22、烘干组件21和抽风部23均设置于第一壁241，第一供风部22、烘干组件21和抽风部23均设置于第一壁241面向烘干室20的一侧。第一烘干机构200还包括第一驱动单元25，第一驱动单元25被配置为调节第一壁241与待烘干件在第三方向C的距离。第一驱动单元25能够驱动设置了第一供风部22、烘干组件21和抽风部23的第一壁241移动，以调节第一壁241与基材3000与在第三方向C上的距离，从而调节烘干组件21与基材3000之间的距离，以满足不同的加热需求，提高加热质量。
在一些实施例中，第一烘干机构200还包括第一进风室242，第一进风室242与烘干室20通过第一壁241隔开，第一进风部521、烘干组件21和抽风部23均设置于第一壁241；其中，第一供风部22用于供第一进风室242内的流体介质进入烘干室20。流体介质进入第一进风室242后从多个第一供风部22进入烘干室20，使得流体介质能够被较为均匀地分布在烘干室20内，从而提高基材3000的加热均匀性。第一进风室242与烘干室20共用第一壁241并通过第一壁241隔开，能够减小第一烘干机构200的体积。
第一烘干机构200还包括外箱26，烘干室20和第一进风室242均设置于外箱26内。
在一些实施例中，第一烘干机构200包括第一风箱24，第一风箱24的内部形成第一进风室242，第一风箱24包括第一壁241和具有第一开口的第一箱壁243，第一壁241盖合第一开口以使第一壁241和第一箱壁243共同限定出第一进风室242。第一进风室242与外箱26内部通过第一供风部22连通。第一驱动单元25安装于外箱26，第一驱动单元25通过驱动第一风箱24在外箱26内沿第三方向C移动，从而使第一壁241沿第三方向C移动。
第一风箱24还设置有第一供风口244，第一供风口244与第一进风室242连通，通过第一供风口244向第一进风室242提供流体介质，进入第一进风室242内的流体介质再经过第一供风部22进入烘干室20。
在一些实施例中，烘干室20还具有在第三方向C与第一烘干侧201相对布置的第二烘干侧202，第二烘干侧202设有供流体介质进入烘干室20的多个第二供风部27。第一供风部22能够使流体介质从烘干室20的第二烘干侧202进入烘干室20，能够加快烘干室20内的流体介质的流动，从而加快热量在烘干室20内流动，以使热量在烘干室20内均匀分布，提高基材3000的加热均匀性。
第二烘干侧202位于基材3000背离第一烘干侧201的一侧。第二供风部27可以为风嘴、供风口等。当第二供风部27为风嘴时，第二供风部27可以延伸至烘干室20内，以减小与基材 3000之间的距离。
在一些实施例中，第一烘干机构200包括在第三方向C上面向待烘干件的第一壁241和与第一壁241相对布置的第二壁281；第一供风部22、烘干组件21和抽风部23均设置于第一壁241，第二供风部27设置于第二壁281；烘干室20在第三方向C位于第一壁241和第二壁281之间；第一烘干机构200还包括第二驱动单元29，第二驱动单元29被配置为驱动第二壁281移动以调节第二壁281与第一壁241在第三方向C上的距离。第二驱动单元29能够驱动第二壁281移动以调节第二壁281与第一壁241在第三方向C上的距离，以适应沿第三方向C不同尺寸的基材3000。第三方向C与基材3000的厚度方向一致，第一面和第二面分别为基材3000在第三方向C的相对的两个表面。
第二驱动单元29可以是调节螺钉、直线电机、气缸等直线驱动机构，第二驱动单元29驱动第二壁281沿第三方向C往复移动以使第二壁281靠近或远离基材3000或者第一壁241，从而调节第二供风部27与基材3000的距离或者第二壁281与第一壁241之间的距离。第二驱动单元29可以间隔设置多个，以能够从多个位置沿第三方向C对第二壁281进行调节，尤其是在第二壁281的长度方向和/或宽度方向的尺寸较大的情况下，通过多个第二驱动单元29驱动第二壁281沿第三方向C移动，能够使得第二壁281长度方向和/或宽度方向上的各个位置与基材3000的在第三方向C的距离相同，减小基材3000的各个位置与第二供风部27在第三方向C的距离差异，提高加热均匀性，从而提高产品质量。
在一些实施例中，第一烘干机构200包括第二风箱28，第二风箱28的内部形成第二进风室282，第二风箱28包括第二壁281和具有第二开口的第二箱壁283，第二壁281盖合第二开口以使第二壁281和第二箱壁283共同限定出第二进风室282。第二进风室282与外箱26内部空间通过第二供风部27连通。第二驱动单元29安装于外箱26，第二驱动单元29通过驱动第二风箱28在外箱26内沿第三方向C移动，从而使第二壁281沿第三方向C移动。
第二风箱28还设置有第二供风口284，第二供风口284与第二进风室282连通，通过第二供风口284向第二进风室282提供流体介，进入第二进风室282内的流体介质再经过第二供风部27进入烘干室20。
外箱26还设有供基材3000穿入外箱26内的第一穿入口262和供基材3000穿出外箱26的第一穿出口263，第一穿入口262和第一穿出口263均与外箱26内部连通，基材3000从第一穿入口262穿入外箱26并从第一穿出口263穿出外箱26的过程中，第一烘干机构200对基材3000上的涂层进行烘干。
在一些实施例中，第一烘干机构200还包括回风室30和循环单元53(图中未示出)，回风室30被配置为容纳从抽风部23排出的流体介质，循环单元53被配置为将回风室30内的流体介质导入第一进风室242。
从抽风部23排出的流体介质能够容纳于回风室30，再在循环单元53的作用下进入第一进风室242，从而能够经过第一供风部22进入烘干室20内，能够循环利用烘干室20内烘干组件21产生的热量，减少能耗。图5中实心箭头的指向是从第一供风部22进入烘干室20内的流体介质依次作用于基材3000、抽风部23最后经过回风室30并从外箱26上的第一排风口264排出的流动路径。空心箭头的指向是外箱26内的流体介质经过第一排风口264直接排出的路径。
在一些实施例中，外箱26还设有与外箱26内部连通的第一排风口264，第一烘干机构200还包括第一排风单元32，第一排风单元32用于将外箱26内的流体介质从第一排风口264排出，在第一排风单元32排出外箱26内的流体介质的过程中，流体介质将携带基材3000的涂层烘干蒸发的溶剂排出，降低失重率。
在一些实施例中，回风室30由第一箱壁243的外壁、第二箱壁283的外壁和外箱26的内壁共同限定。回风室30与烘干室20连通，烘干室20内的流体介质能够直接进入回风室30，也可以通过抽风部23进入回风室30内，进入回风室30内的流体介质在循环单元53的驱动下进入第一进风室242和/或第二进风室282。在一些实施例中，循环单元53可以使回风室30内的流体介质经过第一排风口264排出并再经过第一供风部22导入烘干室20内。
以上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 (10)

  1. 一种涂布设备，用于对基材涂布，所述基材包括相对的第一面和第二面，其中，包括：
    第一涂布机构，用于对所述第一面进行涂布；
    第一烘干机构，设于所述第一涂布机构的下游，所述第一涂布机构用于对所述第一面的涂层进行烘干；
    第二涂布机构，设于所述第一烘干机构的下游，所述第二涂布机构用于对所述第二面进行涂布；
    第二烘干机构，设于所述第二涂布机构的下游，所述第二烘干机构被配置为对所述第二面的涂层进行烘干；以及
    第三烘干机构，设于所述第二烘干机构的下游，所述第三烘干机构被配置为对所述第二面的涂层进行烘干。
  2. 根据权利要求1所述的涂布设备，其中，所述第三烘干机构包括：
    多个传动辊，用于传送所述基材，所述基材在相邻的两个传动辊之间形成传送段；
    加热组件，设置于相邻且相对的两个传送段之间并面向所述第二面设置。
  3. 根据权利要求2所述的涂布设备，其中，所述第三烘干机构还包括箱体，所述加热组件和所述多个传动辊均设置于所述箱体内；
    所述箱体上还设有供流体介质进入所述箱体内的进风部和供所述箱体内的流体介质排出的回风部；
    所述第三烘干机构还包括循环单元，所述循环单元被配置为将从所述回风部排出的流体介质从所述进风部导入所述箱体。
  4. 根据权利要求3所述的涂布设备，其中，所述箱体还设有供所述基材穿入所述箱体的入口和供所述基材穿出所述箱体的出口；
    所述涂布设备还包括导入辊和导出辊，所述导入辊设置于所述入口处，所述导入辊被配置为将所述基材从所述入口导入所述箱体，所述导出辊设置于所述出口处，所述导出辊被配置为将所述基材从所述出口导出所述箱体。
  5. 根据权利要求4所述的涂布设备，其中，所述导入辊和所述导出辊中至少一者设置于所述箱体。
  6. 根据权利要求3-5任一项所述的涂布设备，其中，所述涂布设备还包括过滤组件，所述过滤组件设置于所述进风部，所述过滤组件被配置为对从所述进风部进入所述箱体的流体介质进行过滤。
  7. 根据权利要求3-6任一项所述的涂布设备，其中，所述涂布设备还包括预热组件，所述预热组件设置于所述进风部，所述预热组件被配置为对所述进风部进入所述箱体的流体介质进行预热。
  8. 根据权利要求1-7任一项所述的涂布设备，其中，所述涂布设备还包括吹风部，所述吹风部设置于所述第三烘干机构的下游，所述吹风部被配置为向所述基材提供流体介质，以调节所述基材的温度。
  9. 根据权利要求8所述的涂布设备，其中，所述涂布设备还包括冷却箱，所述冷却箱设置于所述第三烘干机构的下游，所述吹风部设置于所述冷却箱内；
    所述冷却箱内设有多个牵引辊，所述多个牵引辊被配置为供所述基材沿其移动方向依次缠绕。
  10. 根据权利要求9所述的涂布设备，其中，所述涂布设备还包括张力调节机构，所述张力调节机构设置于所述冷却箱内，所述张力调节机构被配置为调节所述基材的张力。
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