Coating equipment for lithium battery processing

Abstract

The coating equipment comprises a base and a top plate, a stirring tank is fixedly mounted on the upper surface of the top plate, a feeding opening is formed in the top of the stirring tank, a bubble removing plate is arranged in the feeding opening, a plurality of through holes are formed in the bubble removing plate, and supporting plates are arranged in the through holes; the top end of the supporting plate is arranged in a triangular shape, a spine is fixedly installed in the middle of the supporting plate, a stirring shaft is rotationally installed in the stirring tank, stirring rotary blades are fixedly installed on the surface of the stirring shaft, supporting rods are fixedly installed at the two ends of the stirring rotary blades, and scraping plates are fixedly installed at the bottom ends of the supporting rods. When the lithium battery coating slurry is added, bubbles in the slurry are broken again through the spines and the supporting plate, the performance of the battery can be reduced due to the existence of the bubbles, the slurry sinking to the bottom is scraped upwards by the scraping plate and then falls down, the slurry sinking to the bottom can be stirred again, it can be ensured that all the slurry is fully mixed, and therefore the overall mixing uniformity is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium battery coating technical field especially relates to a kind of coating equipment for lithium battery processing. BACKGROUND

[0002] Lithium battery is a kind of battery with lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution, as a new energy storage carrier and new energy field, lithium battery plays an increasingly important role in the process of changing human lifestyle, and the coating process of lithium battery pole piece is the key process in the production process of lithium battery, and the quality of coating directly affects the capacity and safety of battery, and the quality is directly affected by the uniformity of peeling and coating.

[0003] In the prior art, the Chinese utility model patent with patent No.CN217726104U discloses a lithium battery coating machine, which comprises a workbench, a unwinding mechanism, a coating mechanism and a winding mechanism are arranged on the workbench, characterized in that: it further comprises a drying mechanism, the drying mechanism comprises a hollow box body, openings for accommodating lithium battery pole pieces are arranged on the two sides of the box body, and a heating device and a heat supply device are arranged on the box body; the heating device comprises a heating body and a cover body, the heating body is arranged in the cover body, an air inlet pipe is connected to the upper end of the cover body, and an air outlet pipe is connected to the lower end of the cover body; the inside of the heat supply device is hollow and provided with a plurality of air outlets, and the heat supply device is arranged in the box body; the air outlet of the air outlet pipe is connected to the bottom end of the heat supply device and penetrates through; the top of the box body is inverted conical, and the top end of the box body is connected to the air inlet pipe and penetrates through.

[0004] In the above prior art, although the drying mechanism is increased, the constant temperature heating is good for the baking effect of lithium battery pole piece, but the commonly used coating material tank adopts a stick-shaped stirring rod to stir the coating slurry to ensure the uniformity of the coating slurry, however, since the stirring tank is a cuboid, there is a stirring dead angle, which cannot guarantee the uniformity of the slurry, if there are air bubbles in the slurry, the existence of air bubbles will affect the compactness and conductivity of the coating layer, thereby reducing the performance of the battery. UTILITY MODEL CONTENTS

[0005] The utility model discloses in order to solve the technical problem that the stirring tank is cuboid, there is a stirring dead angle, which cannot guarantee the uniformity of the slurry, if there are air bubbles in the slurry, the existence of air bubbles will affect the compactness and conductivity of the coating layer, thereby reducing the performance of the battery, and provides a kind of coating equipment for lithium battery processing.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of coating equipment for lithium battery processing, including base and top plate, the upper surface of top plate is fixedly installed with stirring tank, the top of stirring tank is installed with feed inlet,

[0007] The inside of the feeding port is internally provided with a bubble removing plate, a plurality of through holes are formed in the inside of the bubble removing plate, a supporting plate is arranged in the inside of the through hole, the top end of the supporting plate is triangularly arranged, and a sharp spike is fixedly installed on the middle part of the supporting plate,

[0008] The inside of the stirring tank is rotatably installed with a stirring shaft, the surface of the stirring shaft is fixedly installed with a stirring vane, the two ends of the stirring vane are fixedly installed with a supporting rod, and the bottom end of the supporting rod is fixedly installed with a scraper.

[0009] Optionally, the top of the feeding port is provided with a sealing plate, and the top of the stirring tank is provided with a connecting pipe.

[0010] Optionally, the inside of the top plate is fixedly installed with an electromagnetic pump communicated with the bottom of the stirring tank, and the lower surface of the top plate is fixedly installed with a coating box communicated with the electromagnetic pump, and the bottom of the coating box is communicated with a plurality of coating heads.

[0011] Optionally, the upper surface of one side of the base is fixedly installed with two first installation plates, the top of the two first installation plates is rotatably installed with a conveying roller, the upper surface of the other side of the base is fixedly installed with two corresponding second installation plates, and the top of the two second installation plates is rotatably installed with a winding roller.

[0012] Optionally, a drying box is arranged between the conveying roller and the winding roller.

[0013] Optionally, the lower surface of the top plate is fixedly installed with an electrostatic brush, and the upper surface of the top plate is fixedly installed with a fan, the bottom of the fan is communicated with an air pipe, and the bottom of the air pipe is arranged at an inclined angle.

[0014] Compared with the prior art, the coating equipment for lithium battery processing has the following beneficial effects:

[0015] 1、In the utility model, when adding the lithium battery coating slurry, the bubbles in the slurry are broken by the sharp spike and the supporting plate, the existence of the bubbles will affect the compactness and conductivity of the coating layer, thereby reducing the performance of the battery;

[0016] 2、In the utility model, the shear force and centrifugal force generated in the stirring process help to remove the bubbles in the slurry, and the supporting rod is driven to rotate to drive the scraper to rotate, the scraper scrapes the slurry on the bottom up and then falls down, the slurry on the bottom is re-stirred, the mixing uniformity of the whole is ensured, and the slurry adhered to the inner wall is scraped off, which is convenient for subsequent cleaning work;

[0017] 3. The utility model discloses a static brush, remove the static electricity on the surface of lithium battery, remove static electricity can ensure the stability and consistency of coating process, thereby improving the quality of battery product, can also brush the dust and particle pollutants that the surface of lithium battery is adsorbed by static electricity, improve the quality when coating, the bottom of the air pipe is inclined angle setting, convenient for blowing the pollutant on the surface of lithium battery, further improve the cleaning effect.

[0018] 4. The utility model discloses a drying box to the lithium battery after coating is dried, can shorten the production cycle, accelerate work efficiency. ACCURACY

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is the static brush structure schematic diagram of the utility model;

[0021] Figure 3 It is the stirring jar structure schematic diagram of the utility model;

[0022] Figure 4 It is the stirring jar cross section structure schematic diagram of the utility model;

[0023] Figure 5 It is the bubble removing plate structure schematic diagram of the utility model;

[0024] Figure 6 It is the utility model Figure 5 It is the structure schematic diagram of the utility model A place amplification;

[0025] In the drawing: 1, base; 2, support leg; 3, first mounting plate; 4, conveying roller; 5, conveying motor; 6, second mounting plate; 7, winding roller; 8, winding motor; 9, drying box; 10, support; 11, top plate; 12, stirring jar; 13, feed inlet; 14, sealing plate; 15, connecting pipe; 16, stirring motor; 17, stirring shaft; 18, stirring vane; 19, support rod; 20, scraper; 21, coating box; 22, electromagnetic pump; 23, coating head; 24, bubble removing plate; 241, through -hole; 242, support plate; 243, thorn; 25, static brush; 26, fan; 27, air pipe. DETAILED DESCRIPTION

[0026] In order to make the personnel in the technical field better understand the utility model scheme, below will combine the drawing in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described.

[0027] Reference Figure 1The utility model provides a kind of coating equipment for lithium battery processing, including base 1, the bottom of base 1 is fixedly installed with support leg 2, and the upper surface of one side of base 1 is fixedly installed with two opposite first mounting plate 3, and the top between two first mounting plate 3 is rotatably installed with conveying roller 4, and lithium battery pole piece is wound on the surface of conveying roller 4, and lithium battery pole piece is unwound when coating by rotating conveying roller 4, and the outer side of one first mounting plate 3 is fixedly installed with conveying motor 5 for driving conveying roller 4, and the upper surface of the other side of base 1 is fixedly installed with two corresponding second mounting plate 6, and the top between two second mounting plate 6 is rotatably installed with winding roller 7, and the winding roller 7 is used to wind lithium battery pole piece after coating, and the outer side of one second mounting plate 6 is fixedly installed with winding motor 8 for driving winding roller 7.

[0028] Reference Figure 1 Conveying roller 4 and winding roller 7 are provided with drying box 9, drying box 9 is prior art, and detailed disclosure is not made here, for drying lithium battery after coating, can shorten production cycle, accelerate work efficiency.

[0029] Reference Figure 1 The upper surface of base 1 and between conveying roller 4 and winding roller 7 are fixedly installed with support 10, the top of support 10 is fixedly installed with top plate 11, the lower surface of one side of top plate 11 is fixedly installed with electrostatic brush 25 corresponding to lithium battery, for removing static electricity on the surface of lithium battery after coating, removing static electricity can ensure the stability and consistency of coating process, thereby improving the quality of battery product, and the dust and particulate pollutants adsorbed by static electricity on the surface of lithium battery can also be brushed off, improve the quality when coating, the upper surface of one side of top plate 11 is fixedly installed with fan 26, the bottom of fan 26 is communicated with air pipe 27 penetrating top plate 11 and corresponding to lithium battery, the bottom of air pipe 27 is arranged at an angle, to facilitate blowing the pollutants on the surface of lithium battery, further improve the cleaning effect.

[0030] Reference Figure 2 And Figure 3 The upper surface of top plate 11 and on the side of fan 26 are fixedly installed with stirring tank 12, for stirring lithium battery coating slurry, stirring can ensure that various components (such as active material, conductive agent, binder, etc.) in lithium battery slurry are uniformly mixed, avoid local concentration too high or too low, thereby improving the uniformity of electrode material after coating, and it is also helpful to eliminate bubbles and lumps in slurry, improve the stability of slurry, the top of stirring tank 12 is provided with feed inlet 13, and the top of stirring tank 12 is provided with connecting pipe 15 on the side of feed inlet 13, for external suction vacuum equipment, by reducing the pressure above slurry, gas in bubble can be forced to escape, so as to achieve the purpose of eliminating small bubbles, the top of feed inlet 13 is provided with sealing plate 14, for sealing stirring tank 12 after adding slurry.

[0031] Reference Figures 4-6 The inside of the feeding port 13 is provided with a bubble removing plate 24, a plurality of through holes 241 are formed in the inside of the bubble removing plate 24, a supporting plate 242 is arranged in the inside of the through hole 241, the top end of the supporting plate 242 is triangularly arranged, and a sharp 243 is fixedly installed at the middle part of the supporting plate 242.

[0032] Further, when the lithium battery coating slurry is added, the existence of the internal bubbles will affect the density and conductivity of the coating layer, thereby reducing the performance of the battery. When the lithium battery coating slurry passes through the sharp 243 and the supporting plate 242, the bubbles in the slurry can be broken by the sharp 243, thereby improving the density and conductivity of the coating layer and improving the performance of the battery.

[0033] Reference Figure 3 And Figure 4 The inside of the stirring tank 12 is rotatably installed with a stirring shaft 17, the outside of the stirring tank 12 is fixedly installed with a stirring motor 16 for driving the stirring shaft 17, the surface of the stirring shaft 17 is fixedly installed with a stirring vane 18, both ends of the stirring vane 18 are fixedly installed with a supporting rod 19, and the bottom end of the supporting rod 19 is fixedly installed with a scraper 20 corresponding to the inner wall of the stirring tank 12.

[0034] Further, when the slurry enters the inside of the stirring tank 12, the stirring motor 16 drives the stirring shaft 17 to rotate, so as to fully mix the slurry. At the same time, the shear force and centrifugal force generated during the stirring process help to remove the bubbles in the slurry. The stirring vane 18 can also drive the scraper 20 to rotate by driving the supporting rod 19 to rotate. The scraper 20 can scrape the slurry on the bottom up and then fall down, so as to re-stir the slurry on the bottom. In this way, all the slurry can be fully mixed, thereby improving the overall mixing uniformity. At the same time, the slurry adhered to the inner wall can be scraped off, which is convenient for subsequent cleaning work.

[0035] Reference Figure 4 The inside of the top plate 11 is fixedly installed with an electromagnetic pump 22 communicating with the bottom of the stirring tank 12, and the lower surface of the top plate 11 is fixedly installed with a coating box 21 communicating with the electromagnetic pump 22. The bottom of the coating box 21 is communicated with a plurality of coating heads 23 corresponding to the lithium battery.

[0036] Further, the electromagnetic pump 22 delivers the well-stirred slurry to the coating box 21, and then uniformly sprays the slurry on the surface of the lithium battery through the coating heads 23, thereby improving the uniformity of the lithium battery coating and improving the product quality.

[0037] As used in the specification and claims, certain terms have particular meanings. Those of skill in the art will understand that one or more embodiments described herein can use terminology particular to certain technologies. It is not intended that the description be limited to the embodiments described herein, but rather that the present application be given the broadest possible interpretation within its scope, consistent with the teachings provided herein and the patent statutes. As used in the specification and claims, the singular forms "a," "an" and "the" include plural references unless the context clearly dictates otherwise. "Approximately" means within 10% of the value stated.

[0038] It is to be understood that the terms "including", "comprising", "consisting" and "consisting essentially of" or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises, has, or consists of, any feature listed herein can include, but is not limited to, other features not listed. It is intended that the article "a" or "an" precede singular elements of the claims, and "the" precede plural elements of the claims unless the context clearly indicates otherwise. Thus, the articles are to be construed as non-limiting unless their intended meaning is clear from the context.

[0039] The above description discloses and describes several preferred embodiments of the present application, but it is understood that the application is not limited to the foregoing examples, and that modifications and changes can be made without departing from the spirit and scope of the application.

Claims

1. A coating apparatus for processing of lithium batteries, characterized by, Including base (1) and top plate (11), the upper surface of top plate (11) is fixedly installed with stirring tank (12), the top of stirring tank (12) is installed with feed inlet (13), The inside of feed inlet (13) is provided with bubble removing plate (24), a plurality of through holes (241) are formed in the inside of bubble removing plate (24), support plate (242) is arranged in the inside of through hole (241), the top of support plate (242) is triangularly arranged, and sharp (243) is fixedly installed in the middle of support plate (242), The inside of stirring tank (12) is rotatably installed with stirring shaft (17), stirring blade (18) is fixedly installed on the surface of stirring shaft (17), support rod (19) is fixedly installed at both ends of stirring blade (18), and scraper (20) is fixedly installed at the bottom of support rod (19).

2. The coating apparatus for processing lithium batteries according to claim 1, wherein The top of feed inlet (13) is provided with sealing plate (14), and the top of stirring tank (12) is provided with connecting pipe (15).

3. The coating apparatus for processing lithium batteries according to claim 1, wherein The inside of top plate (11) is fixedly installed with electromagnetic pump (22) communicated with the bottom of stirring tank (12), and the lower surface of top plate (11) is fixedly installed with coating box (21) communicated with electromagnetic pump (22), and the bottom of coating box (21) is communicated with a plurality of coating heads (23).

4. The coating apparatus for processing lithium batteries according to claim 1, wherein The upper surface of one side of base (1) is fixedly installed with two first installation plates (3), and conveying roller (4) is rotatably installed between the top of two first installation plates (3), the upper surface of the other side of base (1) is fixedly installed with two corresponding second installation plates (6), and winding roller (7) is rotatably installed between the top of two second installation plates (6).

5. The coating apparatus for processing lithium batteries according to claim 4, wherein Drying box (9) is arranged between conveying roller (4) and winding roller (7).

6. The coating apparatus for processing lithium batteries according to claim 3, wherein The lower surface of top plate (11) is fixedly installed with electrostatic brush (25), and the upper surface of top plate (11) is fixedly installed with fan (26), the bottom of fan (26) is communicated with air pipe (27), and the bottom of air pipe (27) is arranged at an inclined angle.

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