Battery diaphragm coating device for lithium battery processing

Abstract

The utility model discloses a battery diaphragm coating device for lithium battery processing, which comprises a box body, the side surface of the box body is connected with a processing bin, the box body is internally provided with a guide roller, the side wall of the box body is provided with an upper channel and a lower channel which are distributed up and down, the upper channel is internally connected with a mounting seat through an air cylinder, and the lower channel is internally connected with the mounting seat through an air cylinder. A cleaning plate is arranged at the bottom of the mounting seat, a plurality of through holes are formed in the cleaning plate, a collecting box is arranged at the top of the mounting seat, a suction fan is arranged on the side face of the collecting box, and a hollow rotating shaft is arranged in the processing bin. The battery diaphragm coating device is scientific and reasonable in structural design, liquid is uniformly coated on a battery diaphragm through a plurality of discharging holes, the battery diaphragm is tightly attached to the coating roller under the pressure action of the pressing roller, raw materials on the surface of the battery diaphragm are uniformly coated by the coating roller, the uniformity degree of the raw materials on the surface of the battery diaphragm is improved, and the production efficiency is improved. And the purpose of improving the extrusion effect of the extrusion roller is achieved, and redundant liquid can drop into the recovery tank to achieve the recovery effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery diaphragm processing equipment technical field, concretely is a kind of battery diaphragm coating device for lithium battery processing. BACKGROUND

[0002] In the preparation process of lithium battery, the coating quality of battery diaphragm has important significance to the capacity, consistency, safety and the like of lithium battery. Micro gravure roll coating is a kind of contact coating, and since contact coating does not need to use back roll, it will not appear the adverse factors caused by using back roll, for example, defects such as wrinkle and cracking on the coating surface, and micro gravure roll coating can coat very thin coating on diaphragm, and is suitable for coating of high-precision products such as lithium battery diaphragm. In the prior art, a patent with publication number CN218655193U is disclosed, which comprises a doctor blade, a micro gravure roll, a detection member and an adjusting assembly. The doctor blade is installed in the doctor blade member, the cutting edge of the doctor blade is in contact with the surface of the micro gravure roll, the micro gravure roll is arranged to coat the coating liquid onto the substrate to form a diaphragm when the substrate is in contact with the surface of the micro gravure roll, the detection member is used to detect the surface density of the diaphragm, and the adjusting assembly is arranged to adjust the deformation amount of the doctor blade at different positions along the length direction of the doctor blade. The existing device including the above-mentioned patent gradually exposes the shortcomings of the technology with the use, mainly in the following aspects: there is a situation that part of the area is not uniformly coated in the early coating process, and the position of uneven coating is easy to cause poor extrusion effect when the extrusion roller is extruded, and in addition, if there is dust on the surface of the battery diaphragm during processing, the quality of the product after coating is easy to be affected. Therefore, we propose a battery diaphragm coating device for lithium battery processing. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a battery diaphragm coating device for lithium battery processing to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a battery diaphragm coating device for lithium battery processing, comprising a box body, a processing bin is connected to the side of the box body, a guide roller is arranged in the box body, an upper passage and a lower passage are formed in the side wall of the box body, an installation seat is connected to the upper passage through an air cylinder, a cleaning plate is arranged at the bottom of the installation seat, a plurality of through holes are formed in the cleaning plate, a collecting box is arranged at the top of the installation seat, a suction fan is arranged on the side of the collecting box, a rotating shaft with an internal hollow is arranged in the processing bin, a coating roller is arranged on the rotating shaft, a plurality of discharge holes are formed in the coating roller, a material cylinder is rotatably connected to the end of the rotating shaft, and a compression roller is overlapped above the coating roller.

[0005] In the above-mentioned scheme, a recovery groove is arranged on the lower side of the processing bin.

[0006] In the scheme, the box side is provided with a feeding port.

[0007] In the scheme, the collecting box is provided with a filter screen.

[0008] In the scheme, the feeding port is arranged on the barrel.

[0009] In the scheme, the end of the compression roller is rotatably arranged in the bracket, and the movable end of the bracket is rotatably connected to the inner wall of the processing bin.

[0010] In the scheme, the processing bin is provided with a protective plate at the top.

[0011] Compared with the prior art, the battery film coating device for lithium battery processing has the advantages that the structure design is simple and reasonable, and has strong practicability. The two upward and downward guide rollers arranged in the box body guide the battery film. The mounting seat is arranged in the upper channel, and the cleaning plate is arranged at the bottom of the mounting seat. The height of the cleaning plate is adjusted by the air cylinder, so that the cleaning plate contacts the battery film to clean the surface of the battery film. In this process, the dust and impurities are sucked into the collecting box by the negative pressure formed at the bottom of the cleaning plate by the air suction machine, so that the surface of the battery film is effectively cleaned, which provides guarantee for the subsequent coating process. The liquid material is added from the barrel, enters the coating roller through the inner cavity of the rotating shaft, and is uniformly coated on the battery film through the plurality of discharge holes. Under the pressure of the compression roller, the battery film is tightly attached to the coating roller, so that the coating roller uniformly coats the surface of the battery film, improves the uniformity of the surface of the battery film, and improves the extrusion effect of the extrusion roller. The excess liquid is collected in the recovery tank for recycling. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a structural schematic diagram of the utility model.

[0013] Fig. 2 It is a structural schematic diagram of the utility model.

[0014] Fig. 3 It is a structural schematic diagram of the utility model.

[0015] In the drawing: 1, box 2, processing bin 3, recovery tank 4, guide roller 5, upper channel 6, lower channel 7, air cylinder 8, mounting seat 9, cleaning plate 10, through hole 11, collecting box 12, filter screen 13, air suction machine 14, rotating shaft 15, coating roller 16, discharge hole 17, barrel 18, compression roller 19, bracket. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0017] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme: a kind of battery film coating device for lithium battery processing, including box 1, the box 1 side is connected with processing bin 2, the box 1 is provided with guide roller 4, the sidewall of the box 1 is equipped with the upper passage 5 and lower passage 6 distributed upwards and downwards, the upper passage 5 is connected with mounting seat 8 by air cylinder 7, the bottom of mounting seat 8 is provided with cleaning plate 9, a plurality of through holes 10 are formed in cleaning plate 9, the top of mounting seat 8 is provided with collection box 11, collection box 11 side is provided with suction fan 13, processing bin 2 is provided with hollow rotating shaft 14 in, rotating shaft 14 is provided with coating roller 15, a plurality of discharge holes 16 are formed in coating roller 15, the end of rotating shaft 14 is rotatably connected with barrel 17, the upper side of coating roller 15 is overlapped with compression roller 18.

[0018] In the above scheme, the lower side of the processing bin 2 is provided with a recovery tank 3. During the coating process of the battery film by the coating roller 15, the excess liquid will drip into the recovery tank 3 to achieve the recovery effect.

[0019] In the above scheme, the side of the box 1 is provided with an inlet. The battery film enters the box 1 from the inlet, passes through the upper guide roller and then passes out from the upper passage 5, then passes around the end of the coating roller 15 and then returns to the box 1 from the lower passage 6, and is guided out by the lower guide roller, thereby achieving the guiding and limiting effect of the battery film. By providing two upper and lower guide rollers 4 inside the box 1, the operation effect is improved.

[0020] In the above scheme, the collection box 11 is provided with a filter screen 12. By providing a mounting seat 8 in the upper passage 5 and a cleaning plate 9 at the bottom thereof, the height of the cleaning plate 9 is adjusted by the air cylinder 7, so that the cleaning plate 9 contacts the battery film to clean the surface thereof. In this process, the suction fan 13 forms a negative pressure at the bottom of the cleaning plate 9 to suck the dust and impurities into the collection box 11 for storage, thereby effectively cleaning the surface of the battery film and providing protection for the subsequent coating process, and improving the processing quality.

[0021] In the above scheme, the barrel 17 is provided with an inlet.

[0022] In the scheme, the end of the compression roller 18 is rotatably mounted in the bracket 19, and the movable end of the bracket 19 is rotatably connected to the inner wall of the processing bin 2. By setting the cooperating structures of the rotating shaft 14, the coating roller 15, and the barrel 17, the liquid material is added from the barrel 17, enters the coating roller 15 through the inner cavity of the rotating shaft 14, is uniformly coated on the battery film by the plurality of discharge holes 16, and is tightly attached to the coating roller 15 under the pressure of the compression roller 18, so that the coating roller 15 uniformly coats the raw material on the surface of the battery film, thereby improving the uniformity of the raw material on the surface of the battery film and improving the extrusion effect of the extrusion roller.

[0023] In the scheme, the top of the processing bin 2 is provided with a protective plate.

[0024] Working principle:

[0025] The battery film coating device for lithium battery processing is used in particular, the battery film enters the box body 1 from the feeding port, is guided from the upper passage 5 after being guided by the upper guide roller, then is sent back to the box body 1 from the lower passage 6 after bypassing the end of the coating roller 15, is guided out by the lower guide roller, the guiding and limiting effect of the battery film is realized, the height of the cleaning plate 9 is adjusted by the air cylinder 7, so that the cleaning plate 9 is in contact with the battery film, the cleaning plate 9 moves relative to the battery film to achieve the effect of cleaning the surface of the battery film, in this process, the dust and impurities are sucked into the collecting box 11 for storage by forming negative pressure at the bottom of the cleaning plate 9 by the air suction fan 13, the effective cleaning of the surface of the battery film is realized, by setting the cooperating structures of the rotating shaft 14, the coating roller 15, and the barrel 17, the liquid material is added from the barrel 17, enters the coating roller 15 through the inner cavity of the rotating shaft 14, is uniformly coated on the battery film by the plurality of discharge holes 16, and is tightly attached to the coating roller 15 under the pressure of the compression roller 18, so that the coating roller 15 uniformly coats the raw material on the surface of the battery film, thereby improving the uniformity of the raw material on the surface of the battery film and improving the extrusion effect of the extrusion roller.

[0026] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A battery film coating device for lithium battery processing, comprising a box body (1), characterized in that: The box (1) side is connected with processing warehouse (2), the box (1) is provided with guide roller (4), the sidewall of the box (1) is opened with upper and lower distribution upper passage (5) and lower passage (6), the upper passage (5) is connected with mounting seat (8) through air cylinder (7) in, the bottom of mounting seat (8) is provided with cleaning plate (9), a plurality of through holes (10) are set up on the cleaning plate (9), the top of mounting seat (8) is provided with collection box (11), the side of collection box (11) is provided with air suction machine (13), the processing warehouse (2) is provided with inside hollow rotating shaft (14), the rotating shaft (14) is provided with coating roller (15), a plurality of discharge holes (16) are set up on the coating roller (15), the end of rotating shaft (14) is rotatably connected with material cylinder (17), the upper of coating roller (15) is overlapped with compression roller (18).

2. The cell membrane coating device for lithium battery processing according to claim 1, characterized in that: The processing warehouse (2) is provided with recovery groove (3) under.

3. The cell membrane coating device for lithium battery processing according to claim 1, characterized in that: The box (1) side is opened with feeding port.

4. The cell membrane coating device for lithium battery processing according to claim 1, characterized in that: The collection box (11) is provided with filter screen (12).

5. The cell membrane coating device for lithium battery processing according to claim 1, characterized in that: The material cylinder (17) is provided with feeding port.

6. The cell membrane coating device for lithium battery processing according to claim 1, characterized in that: The end of compression roller (18) is rotatably installed in support (19), and the movable end of support (19) is rotatably connected on the inner wall of processing warehouse (2).

7. The cell membrane coating device for lithium battery processing according to claim 1, characterized in that: The top of processing warehouse (2) is provided with protection plate.

Images