Pole piece coating device

Abstract

The utility model discloses a pole piece coating device. According to the pole piece coating device, a mounting plate is arranged on the side surface of the upper end of a working platform; guide wheels are arranged at the front end of the upper surface of the working platform; a guide wheel, a tensioning wheel and a pressing wheel are sequentially arranged at the rear end of the guide wheel; a blanking nozzle is arranged in the middle of the upper surface of the working platform; a storage barrel is arranged at the upper end of the discharging nozzle; a scraper blade and a cleaner are sequentially arranged at the rear end of the discharging nozzle; a lifting wheel is arranged at the rear end of the upper surface of the working platform; the lifting wheel conveys the coated pole piece to the dryer; and a discharging wheel is arranged at the rear end of the dryer. The tension of the pole piece is adjusted through the adjustable tensioning wheel, the pole piece is prevented from being broken in the coating process, the coating is sprayed out through the discharging nozzle, the coating is scraped to be flat through the scraping plate, the coating on the pole piece can be pushed to be flat towards the two sides of the pole piece through the triangular scraping plate, and the coating effect is enhanced; and a cleaner is arranged to clean and recover the coating on the two sides of the pole piece.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production, and particularly relates to a pole piece coating device. Background Art

[0002] Lithium batteries are batteries that use lithium metal or lithium alloy as anode materials and non-aqueous electrolyte solutions. Usually, a slurry with good stability, viscosity and fluidity needs to be evenly coated on the positive and negative electrode collectors. Pole coating is of great significance to the capacity, consistency and safety of lithium batteries.

[0003] Battery pole pieces are an important component of lithium batteries and one of the core components of lithium batteries. At present, the production process of battery pole pieces requires processes such as slurry, coating, rolling and shearing. Coating is a method of coating a paste polymer, a molten polymer or a polymer melt on paper, cloth, or plastic film to obtain a composite material (film). Electrode sheets generally also need to be coated during production and processing. A coating device is required during coating. If the coating thickness is too thick during the coating process, it will affect the subsequent pole piece rolling process, and the performance consistency of the battery pole pieces cannot be guaranteed, affecting the performance of the lithium battery. In addition, the pole pieces after oven drying will have bulging edges, resulting in an increase in the defective rate.

[0004] The patent with publication number CN217856859U discloses a battery pole piece coating device, including a material guide roller, a traction roller, a fixed plate and a coating assembly; there are two fixed plates, and material guide rollers are symmetrically arranged on both sides of the top of the two fixed plates, and traction rollers are symmetrically arranged on both sides of the bottom of the two fixed plates, and extension plates are arranged at both ends of the traction rollers, and the ends of the extension plates are arranged inside the fixed plates, and the extension plates are slidably connected to the fixed plates, and the two material guide rollers and the two traction rollers are connected to each other through the pole piece film.

[0005] In actual use, the paint on the electrode needs to be scraped flat and excess paint needs to be scraped off, otherwise it will still easily lead to uneven coating and waste of paint. Utility Model Content

[0006] The utility model aims to provide a pole piece coating device, which sprays paint by setting a feeding nozzle and flattens the paint by setting a scraper. By setting a triangular scraper, the paint on the pole piece can be pushed flat to both sides of the pole piece, and the paint on both sides of the pole piece can be cleaned and recovered by setting a cleaner, thereby solving the problems of uneven pole piece coating and paint waste.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model discloses a pole piece coating device, comprising a working platform, wherein a mounting plate is provided on the side surface of the upper end of the working platform; a guide wheel for guiding pole piece feeding is provided at the front end of the upper surface of the working platform; a guide wheel, a tensioning wheel and a pressure wheel are provided in sequence at the rear end of the guide wheel; a feeding nozzle is provided in the middle of the upper surface of the working platform; a storage barrel is provided at the upper end of the feeding nozzle; a scraper and a cleaner are provided in sequence at the rear end of the feeding nozzle; a lifting wheel for conveying pole pieces is provided at the rear end of the upper surface of the working platform; the lifting wheel conveys the pole pieces coated with paint to a dryer; a discharging wheel for conveying pole pieces is provided at the rear end of the dryer.

[0009] Furthermore, the tension wheel, the feeding nozzle, the scraper and the dryer are all fixed on the side of the mounting plate.

[0010] Furthermore, the tensioning wheel is fixed on the mounting plate through a first fixing seat, a guide groove is provided in the middle of the first fixing seat; the tensioning wheel is movably installed in the guide groove; a hydraulic telescopic rod is provided at the bottom of the guide groove; the hydraulic telescopic rod drives the tensioning wheel to move up and down in the guide groove to adjust the tension of the pole piece.

[0011] Furthermore, the feed nozzle is fixed on the mounting plate via a second fixing seat; the feed nozzle is laterally provided with a plurality of nozzles, and a solenoid valve is provided on the nozzle.

[0012] Furthermore, the scraper is movably mounted on the mounting plate via a third fixing seat, and a threaded hole and a plurality of guide holes are arranged on the upper surface of the third fixing seat.

[0013] Furthermore, the scraper is a triangular plate, and a connecting plate is provided at the upper end of the scraper; a lead screw bolt is installed in the middle of the upper surface of the connecting plate, and a guide column is provided on both sides of the lead screw bolt; the lead screw bolt is engaged with the threaded hole, and the guide column cooperates with the guide hole; the lead screw bolt drives the scraper to move up and down.

[0014] Furthermore, a through groove for the pole piece to pass through is provided in the middle of the cleaner, and a slide groove is provided transversely on the upper surface of the cleaner; a scraper for cleaning the paint on both sides of the pole piece is provided on each side of the through groove; a positioning bolt is installed on the upper surface of the scraper, and the positioning bolt cooperates with the slide groove.

[0015] Furthermore, the dryer is a "["-shaped structure, the middle of the dryer is a drying area through which the pole pieces pass, and a plurality of heaters are provided at both the upper and lower ends of the dryer.

[0016] Furthermore, a collecting box for recycling paint is provided on the lower surface of the working platform.

[0017] The utility model has the following beneficial effects:

[0018] The utility model adjusts the tension of the pole piece by setting an adjustable tensioning wheel to prevent the pole piece from breaking during the coating process, sprays the coating by setting a feeding nozzle, and flattens the coating by setting a scraper. By setting a triangular scraper, the coating on the pole piece can be flattened to both sides of the pole piece to enhance the coating effect; and the coating on both sides of the pole piece can be cleaned and recycled by setting a cleaner;

[0019] The scraper is driven up and down by a lead screw structure, and can be adjusted according to the thickness of the electrode coating required, and the position of the scrapers on both sides of the cleaner can be adjusted according to the width of the electrode, which can be suitable for the production of electrode pieces of different models and sizes.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of a pole piece coating device;

[0023] Figure 2 It is a schematic diagram of the structure of the scraper;

[0024] Figure 3 It is a schematic diagram of the structure of the cleaner;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-working platform, 2-guide wheel, 3-tensioning wheel, 4-pressing wheel, 5-unloading nozzle, 6-scraper, 7-cleaner, 8-lifting wheel, 9-dryer, 10-discharging wheel, 101-mounting plate, 201-guide wheel, 301-first fixed seat, 302-guide groove, 501-storage barrel, 601-connecting plate, 602-screw bolt, 603-guide column, 604-third fixed seat, 605-threaded hole, 701-through groove, 702-scraper, 703-positioning bolt, 901-heater. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] See also Figure 1-3 As shown, the utility model is a pole piece coating device, comprising a working platform 1, wherein a plurality of rollers are arranged side by side in the middle of the working platform 1; the pole piece runs along the rollers. A mounting plate 101 is arranged on the upper side of the working platform 1; the tension wheel 3, the feeding nozzle 5, the scraper 6 and the dryer 9 are all fixed on the side of the mounting plate 101; a collecting box 102 for recycling paint is arranged on the lower surface of the working platform 1, and the fallen paint can be recycled by setting the collecting box 102, thereby preventing the waste of paint and reducing the production cost.

[0030] A guide wheel 2 for guiding the loading of the electrode is provided at the front end of the upper surface of the working platform 1; a guide wheel 201, a tensioning wheel 3 and a pressing wheel 4 are provided in sequence at the rear end of the guide wheel 2; a reeling mechanism for storing the electrode is provided at the front end of the working platform 1, and after the electrode comes out of the reeling mechanism, it passes through the guide wheel 2, the guide wheel 201, the tensioning wheel 3 and the pressing wheel 4 in sequence to enter the working platform 1 for coating processing.

[0031] It can be understood that in order to solve the problem that the pole piece is easy to break during transportation, the utility model adjusts the tension of the pole piece by setting a tensioning wheel. Specifically, the tensioning wheel 3 proposed in the utility model is fixed on the mounting plate 101 through a first fixed seat 301, and a guide groove 302 is provided in the middle of the first fixed seat 301; the tensioning wheel 3 is movably installed in the guide groove 302; a hydraulic telescopic rod is provided at the bottom of the guide groove 302; the hydraulic telescopic rod drives the tensioning wheel 3 to move up and down in the guide groove 302 to adjust the tension of the pole piece.

[0032] A feeding nozzle 5 is arranged in the middle of the upper surface of the working platform 1; a storage barrel 501 is arranged at the upper end of the feeding nozzle 5; the feeding nozzle 5 is fixed on the mounting plate 101 through a second fixing seat; a plurality of nozzles are arranged horizontally on the feeding nozzle 5, and an electromagnetic valve is arranged on the nozzle; the switch of the nozzle can be controlled by the electromagnetic valve; the staff can control the number of opened nozzles according to the width of the electrode.

[0033] The rear end of the feed nozzle 5 is provided with a scraper 6 and a cleaner 7 in sequence; the scraper 6 is movably mounted on the mounting plate 101 through a third fixing seat 604, and a threaded hole 605 and a plurality of guide holes are provided on the upper surface of the third fixing seat 604;

[0034] Based on the above, Figure 2 As shown, the scraper 6 is a triangular plate. By setting the triangular scraper 6, the paint can be pushed flat from the middle of the pole piece to both sides, which can improve the coating effect, make it easier to scrape the paint flat, and push the paint to both sides of the pole piece and drop it into the collecting box 102; a connecting plate 601 is provided at the upper end of the scraper 6; a lead screw bolt 602 is installed in the middle of the upper surface of the connecting plate 601, and a guide column 603 is respectively provided on both sides of the lead screw bolt 602; the lead screw bolt 602 is meshed with the threaded hole 605, and the guide column 603 cooperates with the guide hole; the lead screw bolt 602 drives the scraper 6 to move up and down, and by setting the lead screw structure, the height of the scraper 6 can be adjusted according to the thickness required to be coated on the pole piece.

[0035] It is also understandable that Figure 3 In order to further clean the excess paint on the pole piece, the utility model cleans both sides of the pole piece by setting a cleaner 7; specifically, in the utility model, a through groove 701 for the pole piece to pass through is set in the middle of the cleaner 7, and a slide groove is set horizontally on the upper surface of the cleaner 7; a scraper 702 for cleaning the paint on both sides of the pole piece is respectively provided on both sides of the through groove 701; the scraper 702 can move left and right in the through groove 701, and the staff can adjust the position of the scraper 702 according to the width of the pole piece; a positioning bolt 703 is installed on the upper surface of the scraper 702, and the positioning bolt 703 cooperates with the slide groove, and the adjusted scraper 702 can be fixed by the positioning bolt 703.

[0036] The rear end of the upper surface of the working platform 1 is provided with a lifting wheel 8 for conveying the electrode piece; the electrode piece is guided away from the working platform 1 and conveyed to the dryer 9 by the lifting wheel 8;

[0037] It can be understood that in order to solidify the paint, the utility model dries the electrode after coating by setting up a dryer 9; specifically, the lifting wheel 8 in the utility model transports the electrode after coating to the dryer 9; the dryer 9 is a "["-shaped structure, and the middle of the dryer 9 is a drying area through which the electrode passes, and a plurality of heaters 901 are arranged at the upper and lower ends of the dryer 9. The heater 901 can adopt a heating resistor wire to heat the electrode through the heater 901; a temperature sensor and a humidity sensor can be installed in the middle of the dryer 9, and the drying effect is detected by the arranged temperature sensor and humidity sensor.

[0038] A discharge wheel 10 for conveying the electrode pieces is disposed at the rear end of the dryer 9, and the discharge wheel 10 conveys the electrode pieces to the winding structure for storage.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A pole piece coating device, comprising a working platform (1), characterized in that: A mounting plate (101) is provided on the upper side of the working platform (1); A guide wheel (2) for guiding the loading of pole pieces is provided at the front end of the upper surface of the working platform (1); The rear end of the guide wheel (2) is provided with a guide wheel (201), a tension wheel (3) and a pressing wheel (4) in sequence; A material discharge nozzle (5) is arranged in the middle of the upper surface of the working platform (1); a material storage barrel (501) is arranged at the upper end of the material discharge nozzle (5); The rear end of the feeding nozzle (5) is provided with a scraper (6) and a cleaner (7) in sequence; The rear end of the upper surface of the working platform (1) is provided with a lifting wheel (8) for conveying the pole piece; The lifting wheel (8) transports the coated electrode to the dryer (9); a discharge wheel (10) for transporting the electrode is provided at the rear end of the dryer (9).

2. A pole piece coating device according to claim 1, characterized in that: The tension wheel (3), the feed nozzle (5), the scraper (6) and the dryer (9) are all fixed on the side of the mounting plate (101).

3. A pole piece coating device according to claim 2, characterized in that: The tension wheel (3) is fixed on the mounting plate (101) via a first fixing seat (301); a guide groove (302) is provided in the middle of the first fixing seat (301); the tension wheel (3) is movably mounted in the guide groove (302); A hydraulic telescopic rod is provided at the bottom of the guide groove (302); the hydraulic telescopic rod drives the tensioning wheel (3) to move up and down in the guide groove (302) to adjust the tension of the pole piece.

4. A pole piece coating device according to claim 2, characterized in that: The material discharge nozzle (5) is fixed on the mounting plate (101) via a second fixing seat; the material discharge nozzle (5) is laterally provided with a plurality of nozzles, and the nozzles are provided with electromagnetic valves.

5. The electrode coating device according to claim 2, characterized in that: The scraper (6) is movably mounted on the mounting plate (101) via a third fixing seat (604); a threaded hole (605) and a plurality of guide holes are provided on the upper surface of the third fixing seat (604).

6. A pole piece coating device according to claim 5, characterized in that: The scraper (6) is a triangular plate, and a connecting plate (601) is provided at the upper end of the scraper (6); A lead screw bolt (602) is installed in the middle of the upper surface of the connecting plate (601), and a guide column (603) is respectively provided on both sides of the lead screw bolt (602); The lead screw bolt (602) is meshed with the threaded hole (605), and the guide column (603) is matched with the guide hole; the lead screw bolt (602) drives the scraper (6) to move up and down.

7. The electrode coating device according to claim 1, characterized in that: A through groove (701) for the pole piece to pass through is arranged in the middle of the cleaner (7), and a sliding groove is arranged transversely on the upper surface of the cleaner (7); A scraper (702) for cleaning the paint on both sides of the electrode piece is respectively provided on both sides of the through groove (701); A positioning bolt (703) is installed on the upper surface of the scraper (702), and the positioning bolt (703) cooperates with the slide groove.

8. The electrode coating device according to claim 1, characterized in that: The dryer (9) is of a "["-shaped structure, the middle of the dryer (9) is a drying area through which the electrode pieces pass, and a plurality of heaters (901) are provided at both the upper and lower ends of the dryer (9).

9. The electrode coating device according to claim 1, characterized in that: The lower surface of the working platform (1) is provided with a collecting box (102) for recovering paint.

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