Lithium battery diaphragm coating device

Abstract

The utility model relates to a lithium battery diaphragm coating device, which aims to solve the technical problems that only one side of a diaphragm can be coated and the working efficiency is low in the prior art, and comprises a shell, and a first bracket and a second bracket are arranged at the upper end in the shell; according to the lithium battery diaphragm coating device, through the combination of the feeding port and the guide roller, the conveying and guiding operation of a lithium battery diaphragm can be achieved, through the combination of the spraying pipe, the spraying head and the connecting pipe, coating liquid can be evenly sprayed to the two sides of the lithium battery diaphragm, and the coating liquid can be evenly sprayed to the two sides of the lithium battery diaphragm. Through elastic force of a spring, a second support can be pushed to be close to a first support, so that a second coating roller and a first coating roller are attached to the two sides of the lithium battery diaphragm correspondingly, coating liquid on the two sides of the lithium battery diaphragm can be further rolled to be uniform, and the problem that an existing lithium battery diaphragm coating device can only coat one side of the diaphragm and cannot coat the other side of the diaphragm is solved. And the working efficiency is low.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery diaphragm processing, in particular to a lithium battery diaphragm coating device. Background Art

[0002] With the rapid development of electric vehicles, renewable energy and other fields, lithium batteries are being widely used as an important energy storage device. The performance and safety of lithium batteries depend to a large extent on the diaphragm inside them. The existing lithium battery diaphragms are evenly coated on the substrate by spraying, rolling, etc. during coating to form a uniform and dense diaphragm.

[0003] According to the disclosed patent CN220346336U, a lithium battery diaphragm coating device includes a frame and a coating mechanism; the frame: an electric conveyor is provided at the upper end of its inner cavity, a material box is provided on the left side of the middle of the upper surface of the frame, and solenoid valves are connected in series in the liquid outlet pipes evenly arranged longitudinally on the lower surface of the material box, and a single-chip computer is provided on the right side of the upper end of the front surface of the frame; the coating mechanism: includes a fixed plate, a sliding plate and a coating roller, the fixed plate is longitudinally symmetrically arranged on the right side of the middle of the upper surface of the frame, and the sliding plate is vertically slidably connected in the dovetail groove arranged between the left and right walls of the fixed plate, and the coating roller is rotatably connected between the two sliding plates through a rotating shaft.

[0004] In the process of realizing the present invention, the inventors discovered that at least the following problems exist in the prior art and have not been solved: In the above-mentioned case, the coating liquid on the meta-aramid lithium battery separator is rolled evenly by a coating roller. At the same time, under the action of the spring elastic support force, the sliding plate and the coating roller are always in contact with the meta-aramid lithium battery separator, so that the coating liquid can be evenly dispersed and spread on the meta-aramid lithium battery separator. However, during use, only one set of coating rollers is provided, resulting in coating operation on only one side of the lithium battery separator, which is inefficient. Therefore, it is necessary to design a new technical solution to solve this problem. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet practical needs, and provide a lithium battery diaphragm coating device to solve the current technical problem that only one side of the diaphragm can be coated and the working efficiency is low.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: a lithium battery diaphragm coating device is designed, comprising a shell, a first bracket and a second bracket are provided at the upper end of the interior of the shell, a first coating roller and a second coating roller are rotatably connected to the inner sides of the first bracket and the second bracket respectively, and the first coating roller and the second coating roller are of the same size; a coating mechanism: used for coating both sides of the lithium battery diaphragm, the coating mechanism comprising a spring and a nozzle, the first bracket is fixedly mounted on the inner wall of one side of the shell, the second bracket is movably connected to the shell, the spring is arranged on the side of the second bracket away from the second coating roller, two groups of limiting grooves are opened on the inner wall of the shell close to the second bracket, the inner side of the limiting groove is slidably connected to the limiting rod, the end of the limiting rod located on the inner side of the shell is fixedly connected to the outer side of the second bracket, the nozzle is in an inverted U shape, the inner side of the nozzle is symmetrically mounted with a nozzle, the nozzle is located on the inner side of the shell, and the nozzle is located on the bottom side of the first coating roller and the second coating roller, and the end of the nozzle located on the outer side of the shell is connected to a connecting pipe.

[0007] Preferably, the bottom end inside the shell is rotatably connected to a guide roller, the guide roller is placed on the bottom side of the nozzle, and a feed port is opened through the bottom end of one side of the shell.

[0008] Preferably, a first scraper bar and a second scraper bar are horizontally installed through the inner sides of the first bracket and the second bracket, respectively, and the first scraper bar and the second scraper bar are respectively in contact with the outer sides of the first coating roller and the second coating roller.

[0009] Preferably, both ends of the first scraper strip and the second scraper strip extend to the outside of the housing, and guide grooves are horizontally formed through the upper surfaces of the first scraper strip and the second scraper strip.

[0010] Preferably, a sliding groove is horizontally provided through the front and rear sides of the shell, and two ends of the second scraper strip are slidably connected to the sliding grooves on both sides of the shell.

[0011] Preferably, the spring is sleeved on the outside of the limiting rod, and both ends of the spring are fixedly connected to the second bracket and the inner wall of the shell respectively.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model can realize the conveying and guiding operation of the lithium battery diaphragm through the combination of the feed port and the guide roller. Through the combination of the nozzle, the nozzle and the connecting pipe, the coating liquid can be evenly sprayed on both sides of the lithium battery diaphragm. Through the limit rod, the limit groove and the elastic force of the spring, the second bracket can be pushed close to the first bracket, so that the second coating roller and the first coating roller are respectively fitted with the two sides of the lithium battery diaphragm, and the coating liquid on both sides of the lithium battery diaphragm can be further rolled evenly, thereby solving the problem of the existing lithium battery diaphragm coating device that can only coat one side of the diaphragm and has low working efficiency.

[0014] 2. The utility model can scrape and clean the coating liquid adhered to the outer sides of the first coating roller and the second coating roller through the first scraper and the second scraper on the inner sides of the first bracket and the second bracket, and then guide the coating liquid on the surface of the first scraper and the second scraper out of the shell through the guide groove, which is convenient for the staff to collect. The two ends of the second scraper are slidably connected with the slide grooves at the front and rear ends of the shell, which can prevent the second scraper from interfering with the movement of the second bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 It is a top view of the utility model;

[0018] In the figure: 1. Shell; 11. First bracket; 12. Second bracket; 13. First coating roller; 14. Second coating roller; 15. Spring; 16. Limit rod; 17. Limit groove; 2. First scraper; 21. Second scraper; 22. Guide groove; 23. Slide groove; 24. Nozzle; 25. Spray head; 26. Connecting pipe; 27. Guide roller; 28. Feed port. DETAILED DESCRIPTION

[0019] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0020] A lithium battery separator coating device, see Figures 1 to 3, including a shell 1, a first bracket 11 and a second bracket 12 are provided at the upper end of the interior of the shell 1, and the inner sides of the first bracket 11 and the second bracket 12 are rotatably connected to the first coating roller 13 and the second coating roller 14 respectively, and the first coating roller 13 and the second coating roller 14 have the same size; a coating mechanism: used for coating both sides of the lithium battery diaphragm, the coating mechanism includes a spring 15 and a nozzle 24, the first bracket 11 is fixedly mounted on the inner wall of one side of the shell 1, the second bracket 12 is movably connected to the shell 1, the spring 15 is arranged on the side of the second bracket 12 away from the second coating roller 14, and the shell 1 is close to the second bracket 1 2 is provided with two sets of limiting grooves 17 on the inner wall of one side. The inner side of the limiting groove 17 is slidably connected to the limiting rod 16. One end of the limiting rod 16 is located on the inner side of the shell 1 and is fixedly connected to the outer side of the second bracket 12. The spring 15 is sleeved on the outer side of the limiting rod 16. The two ends of the spring 15 are respectively fixedly connected to the second bracket 12 and the inner wall of the shell 1. The nozzle 24 is in an inverted U shape. The nozzle head 25 is symmetrically installed on the inner side of the nozzle 24. The nozzle head 25 is located on the inner side of the shell 1, and the nozzle 24 is located on the bottom side of the first coating roller 13 and the second coating roller 14. The end of the nozzle 24 located on the outer side of the shell 1 is connected to the connecting pipe 26.

[0021] By connecting the connecting pipe 26 to the liquid outlet of the corresponding liquid pump and controlling the operation of the liquid pump, the coating liquid in the corresponding liquid storage tank can be introduced into the nozzle 24, and sprayed out through the symmetrically distributed nozzles 25 on the inner side of the nozzle 24, and the coating liquid can be evenly sprayed on both sides of the lithium battery diaphragm. The limiting rod 16 is slidably connected to the limiting groove 17, and the elastic force of the spring 15 can push the second bracket 12 close to the first bracket 11, so that the second coating roller 14 and the first coating roller 13 are respectively attached to the two sides of the lithium battery diaphragm, and can further roll the coating liquid on both sides of the lithium battery diaphragm evenly, thereby solving the problem of the existing lithium battery diaphragm coating device that can only coat one side of the diaphragm and has low working efficiency.

[0022] For details, see Figures 1 to 3 The bottom end of the shell 1 is rotatably connected to a guide roller 27, which is placed on the bottom side of the nozzle 24. A feed port 28 is opened through the bottom end of one side of the shell 1.

[0023] One end of the lithium battery diaphragm is passed horizontally through the feed port 28 into the shell 1, and then wrapped around the outside of the guide roller 27, so that the lithium battery diaphragm is vertically upward and passes through the middle of the nozzle 24, and finally placed between the first coating roller 13 and the second coating roller 14, and then one end of the lithium battery diaphragm is fixedly connected to the corresponding traction mechanism to realize the conveying operation of the lithium battery diaphragm.

[0024] For further information, see Figures 1 to 3The first scraper 2 and the second scraper 21 are installed horizontally through the inner sides of the first bracket 11 and the second bracket 12 respectively. The two ends of the first scraper 2 and the second scraper 21 extend to the outside of the shell 1. The first scraper 2 and the second scraper 21 are respectively fitted with the outer sides of the first coating roller 13 and the second coating roller 14. The upper surfaces of the first scraper 2 and the second scraper 21 are horizontally penetrated by a guide groove 22.

[0025] The first scraper 2 and the second scraper 21 on the inner sides of the first bracket 11 and the second bracket 12 can be used to scrape and clean the coating liquid adhering to the outer sides of the first coating roller 13 and the second coating roller 14, thereby avoiding residual coating liquid on the surfaces of the first coating roller 13 and the second coating roller 14 and affecting the coating effect. Then, the coating liquid on the surfaces of the first scraper 2 and the second scraper 21 can be guided out of the housing 1 through the guide groove 22, making it convenient for staff to collect the coating liquid.

[0026] It is worth noting that, see Figures 1 to 3 A sliding groove 23 is horizontally opened on the front and rear sides of the shell 1, and the two ends of the second scraper 21 are slidably connected to the sliding groove 23 on both sides of the shell 1.

[0027] The two ends of the second scraper 21 are slidably connected to the slide grooves 23 at the front and rear ends of the housing 1 , which can prevent the second scraper 21 from interfering with the movement of the second bracket 12 and affecting the use effect of the second coating roller 14 .

[0028] In addition, the components designed in this utility model are all universal standard parts or components known to technical personnel in this field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in this field. Needless to say, the content protected by this utility model does not involve improvements to internal structures and methods.

[0029] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A lithium battery diaphragm coating device, comprising a housing (1), characterized in that: A first bracket (11) and a second bracket (12) are provided at the upper end of the interior of the housing (1); a first coating roller (13) and a second coating roller (14) are rotatably connected to the inner sides of the first bracket (11) and the second bracket (12), respectively; the first coating roller (13) and the second coating roller (14) have the same size; Coating mechanism: used for coating both sides of the lithium battery diaphragm, the coating mechanism includes a spring (15) and a nozzle (24), the first bracket (11) is fixedly mounted on the inner wall of one side of the shell (1), the second bracket (12) is movably connected to the shell (1), the spring (15) is arranged on the side of the second bracket (12) away from the second coating roller (14), the inner wall of the shell (1) close to the second bracket (12) is provided with two sets of limiting grooves (17), the inner side sliding of the limiting grooves (17) is provided with a plurality of limiting grooves (17) and a plurality of limiting grooves (17) are provided. A limit rod (16) is dynamically connected, and one end of the limit rod (16) is located inside the shell (1) and fixedly connected to the outside of the second bracket (12). The nozzle (24) is in an inverted U shape, and a nozzle (25) is symmetrically installed on the inside of the nozzle (24). The nozzle (25) is located inside the shell (1), and the nozzle (24) is located on the bottom side of the first coating roller (13) and the second coating roller (14). The end of the nozzle (24) located outside the shell (1) is connected to a connecting pipe (26).

2. A lithium battery separator coating device according to claim 1, characterized in that: The bottom end of the shell (1) is rotatably connected to a guide roller (27), and the guide roller (27) is placed on the bottom side of the nozzle (24). A feed port (28) is provided through the bottom end of one side of the shell (1).

3. A lithium battery separator coating device according to claim 1, characterized in that: A first scraper strip (2) and a second scraper strip (21) are installed horizontally through the inner sides of the first bracket (11) and the second bracket (12), respectively. The first scraper strip (2) and the second scraper strip (21) are respectively fitted with the outer sides of the first coating roller (13) and the second coating roller (14).

4. A lithium battery separator coating device according to claim 3, characterized in that: Both ends of the first scraper strip (2) and the second scraper strip (21) extend to the outside of the housing (1), and guide grooves (22) are horizontally provided on the upper surfaces of the first scraper strip (2) and the second scraper strip (21).

5. A lithium battery separator coating device according to claim 3, characterized in that: Slide grooves (23) are horizontally provided on the front and rear sides of the housing (1), and the two ends of the second scraper (21) are slidably connected to the slide grooves (23) on both sides of the housing (1).

6. A lithium battery separator coating device according to claim 1, characterized in that: The spring (15) is sleeved on the outside of the limiting rod (16), and the two ends of the spring (15) are fixedly connected to the second bracket (12) and the inner wall of the housing (1) respectively.

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