Multifunctional charging tray device for lithium battery coating equipment

Abstract

The invention discloses a multifunctional charging tray device for lithium battery coating equipment. The multifunctional charging tray device comprises a charging tray, a heating mechanism, a stirring mechanism, a filtering mechanism and a cleaning mechanism, the heating mechanism is arranged at the bottom of the charging tray and is used for heating the interior of the charging tray; a stirring structure of the stirring mechanism is arranged in a charging tray, and the stirring mechanism is used for performing stirring operation in the charging tray; the filtering mechanism is arranged between a feeding area and a storage area of the charging tray and is used for filtering slurry in the feeding area and feeding the filtered slurry into the storage area; the cleaning mechanism is arranged at the position, where the printing roller enters, of the material storage area and used for cleaning the printing roller. According to the multifunctional material tray, the functions of stirring, filtering, brush roller cleaning and heating of the material tray are achieved, the problems of slurry precipitation, caking, coating missing, spots, printing roller bonding, slurry heat preservation and the like are well solved, and meanwhile switching of two coating processes on one coating mechanism can be achieved through the multifunctional material tray.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery coating, and in particular to a multifunctional material tray device for lithium battery coating equipment. Background Art

[0002] As the most important process in the production of lithium batteries, the coating process affects important indicators such as the performance, capacity, service life, and safety of the battery pole piece. Whether it is the substrate primer process before extrusion coating or the surface coating process of the pole piece after roller pressing of the lithium battery, the feeding system plays a key role in the quality of the coating. In gravure and micro-concave coating, the slurry is placed in a tray, and the coating roller is immersed in the slurry in the tray. When the plate roller rotates, the slurry is transferred from the tray to the plate roller through the mesh holes engraved on the plate roller to achieve transfer coating.

[0003] When applying primer or surface coating, the slurry used has a viscosity of 100-500mPa.s and a solid content of 7-30wt%. The primer slurry consists of conductive carbon black, adhesive, dispersant, defoamer, water, etc. The surface coating slurry consists of DMF, ceramic, adhesive, dispersant, defoamer, water, etc. The coating thickness is between 0.2-8um.

[0004] During the processes of batching, pulping, dispersing, transferring and feeding before coating, the slurry is prone to caking, agglomeration, mixing with impurities, iron filings, and bubbling, resulting in defects such as missing coating, scratches, spots, and scraper wear when coating the slurry added to the material tray 1.

[0005] At the same time, the slurry added to the material tray is prone to sedimentation and agglomeration in the standby state, especially the ceramic slurry for surface coating. The agglomeration is more serious because the slurry properties at the contact position of the plate roller have changed, resulting in the coating thickness not meeting the standard.

[0006] The slurry in the tray overflows at a high liquid level when the feeding system circulates. The slurry is easily stratified, has poor fluidity at the bottom, and refluxes quickly at the top, resulting in slurry deposition at the bottom, which affects the surface density of the coating.

[0007] The DMF solvent of the surface coating slurry is prone to agglomeration in a low temperature environment, and the cells are blocked when transferred to the plate roller, resulting in no slurry transfer in the coating area and coating leakage.

[0008] In summary, since the above problems are prone to occur in the slurry in the material tray, the coating quality is unqualified, which affects the quality and output of the battery electrodes. Summary of the invention

[0009] The object of the present invention is to provide a multifunctional material tray device for lithium battery coating equipment to solve the problem that the coating quality in the prior art is unsatisfactory and affects the quality and output of battery pole pieces.

[0010] In order to solve the above technical problems, the present invention provides a multifunctional material tray device for lithium battery coating equipment, comprising a material tray, a heating mechanism, a stirring mechanism, a filtering mechanism and a cleaning mechanism; the heating mechanism is arranged at the bottom of the material tray, and the heating mechanism is used to heat the inside of the material tray; the stirring structure of the stirring mechanism is arranged in the material tray, and the stirring mechanism is used to perform stirring operations inside the material tray; the filtering mechanism is arranged between the feeding area and the material storage area of ​​the material tray, and the filtering mechanism is used to filter the slurry in the feeding area and then enter the material storage area; the cleaning mechanism is arranged at the position of the material storage area for the plate roller to enter, and the cleaning mechanism is used to clean the plate roller.

[0011] In one embodiment, a feed port, a drain port and an overflow port are provided at the bottom of the material tray, the feed port is provided in the feed area, the drain port is provided outside the feed area, and the overflow port is provided in the material storage area.

[0012] In one of the embodiments, U-shaped fixing grooves are provided on two opposite sides of the bottom of the material tray, and the U-shaped fixing grooves are used for installation and fixation with the coating machine.

[0013] In one of the embodiments, a handle is provided on the outer side wall of the tray.

[0014] In one of the embodiments, a plurality of separated and staggered circuit partitions are provided inside the heating mechanism, so that a reflux passage is formed inside the heating mechanism, and heat flow inlets and outlets are provided at both ends of the reflux passage.

[0015] In one embodiment, the stirring mechanism includes a rodless cylinder, a slider, a stirring rod and blades; the rodless cylinder is used to drive the slider to move back and forth in a straight line; the slider is connected to the stirring rod; the stirring rod extends into the material storage area; the blades are arranged in the material storage area, and the blades are connected to the stirring rod.

[0016] In one of the embodiments, the filtering mechanism includes a rib and a filter screen; the two ribs are separated and arranged opposite to each other; the filter screen is connected to the two ribs in a plug-in manner.

[0017] In one embodiment, the cleaning mechanism is a brush, and the brush is arranged on the upper part of the material storage area.

[0018] In one of the embodiments, the material tray is provided with a liquid level sensor.

[0019] The beneficial effects of the present invention are as follows:

[0020] The present invention realizes the stirring, filtering, brush roller cleaning and heating functions of the material tray, and effectively solves the problems of slurry precipitation, caking, coating leakage, spots, plate roller adhesion, slurry insulation, etc. At the same time, the multifunctional material tray can realize the switching of two coating processes on one coating mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram provided by an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A side perspective structural diagram of;

[0024] Figure 3 yes Figure 1 Schematic diagram of the partial perspective structure.

[0025] The reference numerals are as follows:

[0026] 10. Feed tray; 11. Feeding area; 12. Storage area; 13. Feeding port; 14. Drainage port; 15. Overflow port; 16. U-shaped fixing groove; 17. Handle; 18. Feeding stopper;

[0027] 20. Heating mechanism; 21. Circuit partition; 22. Reflux passage; 23. Heat flow inlet and outlet;

[0028] 30. stirring mechanism; 31. rodless cylinder; 32. slider; 33. stirring rod; 34. blade;

[0029] 40. Filter mechanism; 41. Sidewall; 42. Filter screen;

[0030] 50. Cleaning organization;

[0031] 61. Feed pipeline; 62. Drain pipeline; 63. Overflow pipeline; 64. Heat flow inlet pipeline; 65. Heat flow return pipeline;

[0032] 70. Liquid level sensor. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0034] The present invention provides a multifunctional material tray device for lithium battery coating equipment, which is implemented as follows: Figures 1 to 3 As shown, it includes a material tray 10, a heating mechanism 20, a stirring mechanism 30, a filtering mechanism 40 and a cleaning mechanism 50; the heating mechanism 20 is arranged at the bottom of the material tray 10, and the heating mechanism 20 is used to heat the inside of the material tray 10; the stirring structure of the stirring mechanism 30 is arranged in the material tray 10, and the stirring mechanism 30 is used to perform a stirring operation inside the material tray 10; the filtering mechanism 40 is arranged between the feeding area 11 and the material storage area 12 of the material tray 10, and the filtering mechanism 40 is used to filter the slurry in the feeding area 11 and then enter the material storage area 12; the cleaning mechanism 50 is arranged at the position of the material storage area 12 for the plate roller to enter, and the cleaning mechanism 50 is used to clean the plate roller.

[0035] During application, the slurry is added into the feed area 11. After being filtered by the filtering mechanism 40, the slurry will enter the storage area 12. Then the stirring mechanism 30 will stir the slurry, the heating mechanism 20 will heat the slurry, and when the plate roller needs to enter the storage area 12 to obtain the slurry, the cleaning mechanism 50 will clean the plate roller. Therefore, after adopting the above-mentioned setting method, the problems of slurry precipitation, agglomeration, coating omission, spots, plate roller adhesion, slurry insulation, etc. can be well solved.

[0036] like Figures 1 to 3 As shown, in this embodiment, a feed port 13, a drain port 14 and an overflow port 15 are provided at the bottom of the material tray 10; the feed port 13 is provided in the feed area 11, the drain port 14 is provided outside the feed area 11, and the overflow port 15 is provided in the material storage area 12; wherein, at this time, the feed port 13 is connected to a feed pipeline 61, the drain port 14 is connected to a drain pipeline 62, and the overflow port 15 is connected to an overflow pipeline 63.

[0037] After adopting the above-mentioned setting mode, the input and discharge of various materials and liquids can be realized to ensure the normal operation of the multifunctional tray device.

[0038] A feed stopper 18 is installed on the feed port 13 to prevent the slurry from impacting and splashing. A groove is processed at the bottom of the feed stopper 18 to guide the slurry to flow into the feed tray 10 from both sides.

[0039] like Figure 1 and Figure 3 As shown, in this embodiment, U-shaped fixing grooves 16 are provided on opposite sides of the bottom of the material tray 10, and the U-shaped fixing grooves 16 are used for installation and fixing with the coating machine.

[0040] After adopting the above arrangement, the U-shaped fixing groove 16 is used to be installed and fixed with the coating mechanism, wherein the material tray 10 can be lifted and lowered by the material tray lifting mechanism of the coating mechanism according to the diameter of the plate roller.

[0041] like Figure 1 and Figure 3 As shown, in this embodiment, the outer wall of the material tray 10 is provided with handles 17. Specifically, the two handles 17 are both U-shaped.

[0042] After adopting the above arrangement, when cleaning, disassembling, or replacing the material tray 10 , the material tray 10 can be easily pulled out from the coating mechanism using the handle 17 .

[0043] like Figure 1 and Figure 3 As shown, in this embodiment, a plurality of separate and staggered circuit partitions 21 are provided inside the heating mechanism 20, so that a reflux passage 22 is formed inside the heating mechanism 20, and heat flow inlets and outlets 23 are provided at both ends of the reflux passage 22, wherein one heat flow inlet and outlet 23 is connected to a heat flow inlet pipeline 64, and the other heat flow inlet and outlet 23 is connected to a heat flow reflux pipeline 65; wherein, a closed and circuitous reflux passage 22 can be formed between the circuit partition 21 and the bottom of the material tray 10 by welding, and the reflux passage 22 can be used for the flow of heating oil or hot water, so as to first insulate the material tray 10, to ensure that the slurry is in a constant temperature state during coating, and to prevent agglomeration, deterioration and the like.

[0044] Specifically, the heating of the material tray 10 can be achieved by heating the oil or water through the mold temperature controller, and then the oil or water is pumped into the reflux path 22 through the heat flow inlet and outlet 23 and the heat flow reflux pipeline 65, and then flows back to the oil (water) tank inside the mold temperature controller. The heating of the mold temperature controller is an electric heating mode.

[0045] like Figure 1 and Figure 2 As shown, this embodiment provides a stirring mechanism 30 including a rodless cylinder 31, a slider 32, a stirring rod 33 and a blade 34; the rodless cylinder 31 is used to drive the slider 32 to move back and forth in a straight line; the slider 32 is connected to the stirring rod 33; the stirring rod 33 extends into the material storage area 12; the blade 34 is arranged in the material storage area 12, and the blade 34 is connected to the stirring rod 33.

[0046] After adopting this setting, the rodless cylinder 31 can drive the slider 32 to move back and forth in a straight line, so that the stirring rod 33 drives the blade 34 to slide back and forth to stir up the slurry settled at the bottom of the material tray 10 to avoid sedimentation, wherein the speed of the rodless cylinder 31 sliding back and forth is adjustable.

[0047] like Figure 1 and Figure 3 As shown, in this embodiment, the filtering mechanism 40 includes a rib 41 and a filter screen 42; the two ribs 41 are separated and arranged opposite to each other; the filter screen 42 and the two ribs 41 are connected in a plug-in manner.

[0048] After adopting this setting method, a replaceable and removable filter screen 42 is provided on the feeding side of the material tray 10. The filter screen 42 is positioned by two retaining edges 41 on the material tray 10, which is convenient for disassembly and assembly. Among them, the filter screen 42 with different mesh sizes can be replaced according to actual conditions to achieve filtering of the feed.

[0049] like Figure 1 and Figure 2 As shown, in this embodiment, the cleaning mechanism 50 is configured as a brush, and the brush is disposed at the upper portion of the material storage area 12 .

[0050] After adopting this setting method, the surface of the plate roller can be cleaned in time through the contact between the brush and the plate roller to prevent the ceramic slurry from sticking.

[0051] like Figure 1 and Figure 2 As shown, in this embodiment, the material tray 10 is provided with a liquid level sensor 70, so as to facilitate timely monitoring of the height of the slurry.

[0052] It should also be pointed out that the multifunctional material tray device of this embodiment is compatible with both gravure roller coating and micro gravure roller reverse coating. When the gravure roller is coated in the forward direction, the material tray 10 is inserted from the discharge side of the coating mechanism, and the gravure roller scraper is installed and arranged on the feed side of the coating mechanism. When the micro gravure roller is reverse coated, the material tray 10 is inserted from the feed side of the coating mechanism, and the micro gravure roller scraper is installed and arranged on the discharge side of the coating mechanism. The above-mentioned gravure roller forward coating is commonly used in the substrate primer process, and the micro gravure roller reverse coating is commonly used in the electrode surface coating process.

[0053] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multifunctional tray device for lithium battery coating equipment, characterized in that: It includes a material tray, a heating mechanism, a stirring mechanism, a filtering mechanism and a cleaning mechanism; The heating mechanism is disposed at the bottom of the material tray, and is used to heat the interior of the material tray; The stirring structure of the stirring mechanism is arranged in the material tray, and the stirring mechanism is used to perform stirring operation inside the material tray; The filtering mechanism is arranged between the feeding area and the storage area of ​​the material tray, and the filtering mechanism is used for filtering the slurry in the feeding area and then entering the storage area; The cleaning mechanism is arranged at a position of the material storage area where the plate roller enters, and the cleaning mechanism is used to clean the plate roller.

2. The multifunctional material tray device for lithium battery coating equipment according to claim 1, characterized in that: A feed port, a drain port and an overflow port are provided at the bottom of the material tray. The feed port is provided in the feed area, the drain port is provided outside the feed area, and the overflow port is provided in the material storage area.

3. The multifunctional tray device for lithium battery coating equipment according to claim 1, characterized in that: The bottom of the material tray is provided with U-shaped fixing grooves on two opposite sides, and the U-shaped fixing grooves are used for installation and fixing with the coating machine.

4. The multifunctional tray device for lithium battery coating equipment according to claim 1, characterized in that: A handle is provided on the outer side wall of the material tray.

5. The multifunctional material tray device for lithium battery coating equipment according to claim 1, characterized in that: A plurality of separated and staggered circuit partitions are arranged inside the heating mechanism, so that a reflux passage is formed inside the heating mechanism, and heat flow inlets and outlets are arranged at both ends of the reflux passage.

6. The multifunctional material tray device for lithium battery coating equipment according to claim 1, characterized in that: The stirring mechanism comprises a rodless cylinder, a slider, a stirring rod and blades; The rodless cylinder is used to drive the slider to move back and forth in a straight line; The slider is connected to the stirring rod; The stirring rod extends into the material storage area; The blade is arranged in the material storage area, and the blade is connected to the stirring rod.

7. The multifunctional material tray device for lithium battery coating equipment according to claim 1, characterized in that: The filtering mechanism comprises a rib and a filter screen; The two retaining edges are arranged separately and relatively; The filter screen is connected to the two retaining edges in a plug-in manner.

8. The multifunctional material tray device for lithium battery coating equipment according to claim 1, characterized in that: The cleaning mechanism is a brush, and the brush is arranged on the upper part of the material storage area.

9. The multifunctional material tray device for lithium battery coating equipment according to claim 1, characterized in that: The material tray is provided with a liquid level sensor.

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