Spraying device for uniformly spraying lithium battery diaphragm

Abstract

The utility model provides a spraying device for uniformly spraying lithium battery diaphragms.The spraying device comprises a base, a processing box is arranged above the base, a mounting column is fixedly mounted on a bottom plate of the processing box, cleaning rods are arranged on the mounting column, the number of the cleaning rods is two, the two cleaning rods are oppositely arranged, and cleaning sponge is bonded to the cleaning rods; the spraying device comprises a base, two storage tanks are arranged on the base, first connecting pipes are arranged above the two storage tanks, the first connecting pipes communicate with second connecting pipes, spraying mechanisms are connected to one ends of the first connecting pipes and one ends of the second connecting pipes, and the two spraying mechanisms are oppositely arranged. And dust and impurities are prevented from affecting the adhesion effect of subsequent paint, the two faces of the paint can be sprayed at the same time, the working efficiency can be improved, and the paint is pumped through the two material pumping pumps at the same time, so that spraying is more uniform.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery separator spraying, and more specifically, to a spraying device for uniformly spraying lithium battery separators. Background Art

[0002] In the structure of a lithium battery, the separator is one of the key inner components. The performance of the separator determines the interface structure, internal resistance, etc. of the battery, directly affecting the battery's capacity, cycle life, and safety performance. A separator with excellent performance plays an important role in improving the comprehensive performance of the battery. The main function of the separator is to separate the positive and negative electrodes of the battery to prevent the two electrodes from contacting and short-circuiting. In addition, it also has the function of allowing electrolyte ions to pass through. The separator material is non-conductive, and its physical and chemical properties have a great impact on the performance of the battery. Different types of batteries use different separators. For the lithium battery series, since the electrolyte is an organic solvent system, a separator material resistant to organic solvents is required, and generally, a high-strength thin-film polyolefin porous membrane is used. For lithium battery separators, polyvinylidene fluoride (PVDF) coated films are commonly used, and there are two common coating methods, including roll coating and spraying.

[0003] When spraying lithium battery separators currently, it is impossible to clean the dust and impurities on the separators, which will lead to poor adhesion after subsequent spraying. Moreover, only one side can be sprayed, resulting in low spraying efficiency. In addition, the spraying is uneven, and the coating cannot be dried after spraying, which will also lead to poor adhesion of the coating.

[0004] Therefore, we have made improvements and proposed a spraying device for uniformly spraying lithium battery separators. Summary of the Utility Model

[0005] The purpose of the utility model is to address the current situation where when spraying lithium battery separators, it is impossible to clean the dust and impurities on the separators, which will lead to poor adhesion after subsequent spraying. Moreover, only one side can be sprayed, resulting in low spraying efficiency. In addition, the spraying is uneven, and the coating cannot be dried after spraying, which will also lead to poor adhesion of the coating.

[0006] To achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] A spraying device for uniformly spraying lithium battery separators to improve the above problems.

[0008] Specifically, this application is as follows:

[0009] It includes a base, above which there is a processing box. On the bottom plate of the processing box, there is a mounting post fixedly installed. On the mounting post, there is a cleaning rod. The number of the cleaning rods is two, and the two cleaning rods are arranged oppositely. The cleaning sponge is adhered to the cleaning rod. On the base, there are two storage tanks. Above each of the two storage tanks, there is a first connecting pipe. The first connecting pipe is communicated with a second connecting pipe. One end of each of the first connecting pipe and the second connecting pipe is connected with a spraying mechanism. The two spraying mechanisms are arranged oppositely. In the processing box, there is a drying mechanism, and in the processing box, there is a winding mechanism.

[0010] As a preferred technical solution of the present application, a pumping pump is installed on the top of the storage tank. The input end of the pumping pump is communicated with the storage tank, and the output end of the pumping pump is communicated with the first connecting pipe.

[0011] As a preferred technical solution of the present application, the spraying mechanism includes a main pipe and nozzles. The nozzles are evenly installed on the main pipe. Both ends of the upper main pipe are communicated with the first connecting pipe, and both ends of the lower main pipe are communicated with the second connecting pipe.

[0012] As a preferred technical solution of the present application, the drying mechanism includes heating pipes arranged on the inner wall of the processing box.

[0013] As a preferred technical solution of the present application, the winding mechanism includes a connecting rod fixedly installed in the processing box, and a winding roller is rotatably connected to the connecting rod.

[0014] As a preferred technical solution of the present application, a clamping groove is opened on the mounting post. At both ends of the cleaning rod, there are clamping blocks fixedly installed. The clamping blocks are matched with the clamping groove, and a plug rod is inserted into the top of the mounting post.

[0015] As a preferred technical solution of the present application, the bottom of the processing box is fixedly installed with support columns, and the bottom of the support columns is fixedly connected with the base. A transparent glass plate is arranged on the front of the processing box.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] In the solution of the present application:

[0018] 1. By setting two pumping pumps to simultaneously convey materials to both ends of the main pipe, it realizes more sufficient feeding in the main pipe and makes the spraying more uniform.

[0019] 2. By setting the cleaning sponge, it realizes the cleaning of the lithium battery separator before spraying, prevents dust and impurities from affecting the subsequent coating adhesion effect, and solves the problem in the prior art that the dust and impurities on the separator cannot be cleaned, which will lead to poor adhesion effect after subsequent spraying.

[0020] 3. By arranging two spraying mechanisms oppositely, spraying on both sides of the lithium battery separator can be achieved simultaneously, which helps to improve work efficiency and solves the problem in the prior art that only one side can be sprayed and the spraying efficiency is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a schematic structural diagram of a spraying device for uniformly spraying a lithium battery separator provided by the present application;

[0022] Figure 2 FIG. is a partial structural diagram of a spraying device for uniformly spraying a lithium battery separator provided by the present application;

[0023] Figure 3 FIG. is a partial structural diagram of a spraying device for uniformly spraying a lithium battery separator provided by the present application;

[0024] Figure 4 FIG. is a schematic structural diagram of a clamping groove and a plug rod of a spraying device for uniformly spraying a lithium battery separator provided by the present application;

[0025] Figure 5 FIG. is a schematic structural diagram of a clamping block of a spraying device for uniformly spraying a lithium battery separator provided by the present application.

[0026] Reference numerals in the figures:

[0027] 1, base; 2, processing box; 3, mounting column; 4, cleaning rod; 5, cleaning sponge; 6, storage tank; 7, pumping pump; 8, first connecting pipe; 9, second connecting pipe; 10, main pipe; 11, spray head; 12, connecting rod; 13, winding roller; 14, heating pipe; 15, support column; 16, transparent glass plate; 17, clamping groove; 18, plug rod; 19, clamping block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.

[0029] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model to be protected, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0030] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0031] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it is not necessary to further define and explain it in subsequent figures.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0033] Embodiment:

[0034] As Figures 1-5 shown, this embodiment provides a spraying device for uniformly spraying a lithium battery separator, including a base 1. Above the base 1, there is a processing box 2. On the bottom plate of the processing box 2, there is a fixedly installed mounting column 3. On the mounting column 3, there is a cleaning rod 4. The number of cleaning rods 4 is two, and the two cleaning rods 4 are arranged oppositely. On the cleaning rod 4, there is a bonded cleaning sponge 5. Before the lithium battery separator enters the processing box 2, the cleaning sponge 5 will clean both sides of the lithium battery separator to prevent dust and impurities from affecting the subsequent coating adhesion effect. On the base 1, there are two storage tanks 6. One end of the first connecting pipe 8 and the second connecting pipe 9 are both connected to a spraying mechanism. The two spraying mechanisms are arranged oppositely. Inside the processing box 2, there is a drying mechanism, and inside the processing box 2, there is a winding mechanism. This spraying device can clean the lithium battery separator before spraying to prevent dust and impurities from affecting the subsequent coating adhesion effect, and can spray both sides simultaneously, which helps to improve work efficiency. Moreover, by simultaneously pumping materials with two pumping pumps 7, the spraying is made more uniform. In addition, it can be directly dried after spraying, which is convenient for use.

[0035] Above both of the two storage tanks 6, there is a first connecting pipe 8. A second connecting pipe 9 is connected to the first connecting pipe 8. A material pumping pump 7 is installed on the top of the storage tank 6. The input end of the material pumping pump 7 is communicated with the storage tank 6, and the output end of the material pumping pump 7 is communicated with the first connecting pipe 8. The spraying mechanism includes a main pipe 10 and spray heads 11. The spray heads 11 are evenly installed on the main pipe 10. Both ends of the upper main pipe 10 are communicated with the first connecting pipe 8, and both ends of the lower main pipe 10 are communicated with the second connecting pipe 9. The material pumping pump 7 pumps the coating into the first connecting pipe 8, and then into the second connecting pipe 9. The coating respectively enters the upper main pipe 10 along the first connecting pipe 8 and enters the lower main pipe 10 along the second connecting pipe 9. Then the coating enters the spray heads 11 from the main pipe 10 and is finally sprayed out from the spray heads 11. By arranging the spray heads 11 both above and below, spraying on both sides can be realized simultaneously, which helps to improve work efficiency.

[0036] The drying mechanism includes heating pipes 14 arranged on the inner wall of the processing box 2. The heating pipes 14 will dry the sprayed lithium battery separator to prevent poor adhesion of the coating.

[0037] For the winding mechanism, it includes a connecting rod 12 fixedly installed in the processing box 2, and a winding roller 13 is rotatably connected to the connecting rod 12.

[0038] To facilitate removing the cleaning sponge 5 for cleaning, a clamping groove 17 is opened on the mounting column 3. Clamping blocks 19 are fixedly installed at both ends of the cleaning rod 4. The clamping blocks 19 are matched with the clamping groove 17. A plug rod 18 is inserted into the top of the mounting column 3. When the cleaning sponge 5 needs to be cleaned, the plug rod 18 is removed, and then the cleaning rod 4 is removed. The cleaning rod 4 drives the clamping blocks 19 at both ends to disengage from the clamping groove 17, and the cleaning rod 4 drives the cleaning sponge 5, thus removing the cleaning sponge 5 for convenient cleaning.

[0039] Support columns 15 are fixedly installed at the bottom of the processing box 2, and the bottom of the support columns 15 is fixedly connected to the base 1. A transparent glass plate 16 is arranged on the front of the processing box 2.

[0040] Specifically, when the spraying device for evenly spraying the lithium battery separator is in use: before the lithium battery separator enters the processing box 2, the cleaning sponge 5 will clean both sides of the lithium battery separator to prevent dust and impurities from affecting the subsequent adhesion effect of the coating; when the cleaning sponge 5 needs to be cleaned, the plug rod 18 is removed, and then the cleaning rod 4 is removed. The cleaning rod 4 drives the clamping blocks 19 at both ends to disengage from the clamping groove 17, and the cleaning rod 4 drives the cleaning sponge 5, thus removing the cleaning sponge 5 for convenient cleaning.

[0041] The material extraction pump 7 pumps the coating into the first connecting pipe 8 and then into the second connecting pipe 9 (the coating enters the upper main pipe 10 along the first connecting pipe 8 and enters the lower main pipe 10 along the second connecting pipe 9). Then the coating enters the spray head 11 from the main pipe 10 and is finally sprayed out from the spray head 11. By arranging spray heads 11 both above and below, spraying on both sides can be achieved simultaneously, which helps to improve work efficiency.

[0042] The heating pipe 14 will dry the coated lithium battery separator to prevent poor adhesion of the coating.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiment is a preferred implementation scheme of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present utility model.

Claims

1. A spraying device for uniformly spraying a lithium battery separator, comprising a base (1), characterized in that, Above the base (1), there is a processing box (2). On the bottom plate of the processing box (2), there is a mounting post (3) fixedly installed. On the mounting post (3), there is a cleaning rod (4). The number of the cleaning rods (4) is two, and the two cleaning rods (4) are arranged oppositely. A cleaning sponge (5) is adhered to the cleaning rod (4). On the base (1), there are two storage tanks (6). Above each of the two storage tanks (6), there is a first connecting pipe (8). A second connecting pipe (9) is communicated with the first connecting pipe (8). One end of each of the first connecting pipe (8) and the second connecting pipe (9) is connected with a spraying mechanism. The two spraying mechanisms are arranged oppositely. A drying mechanism is arranged in the processing box (2), and a winding mechanism is arranged in the processing box (2).

2. The spraying device for uniformly spraying a lithium battery separator according to claim 1, wherein A pumping pump (7) is installed on the top of the storage tank (6). The input end of the pumping pump (7) is communicated with the storage tank (6), and the output end of the pumping pump (7) is communicated with the first connecting pipe (8).

3. The spraying device for uniformly spraying a lithium battery separator according to claim 1, wherein, The spraying mechanism includes a main pipe (10) and spray nozzles (11). The spray nozzles (11) are evenly installed on the main pipe (10). Both ends of the upper main pipe (10) are communicated with the first connecting pipe (8), and both ends of the lower main pipe (10) are communicated with the second connecting pipe (9).

4. The spraying device for uniformly spraying a lithium battery separator according to claim 1, wherein, The drying mechanism includes heating pipes (14) arranged on the inner wall of the processing box (2).

5. The spraying device for uniformly spraying a lithium battery separator according to claim 1, wherein, The winding mechanism includes a connecting rod (12) fixedly installed in the processing box (2). A winding roller (13) is rotatably connected to the connecting rod (12).

6. The spraying device for uniformly spraying a lithium battery separator according to claim 1, wherein, A clamping groove (17) is formed on the mounting post (3). Clamping blocks (19) are fixedly installed at both ends of the cleaning rod (4). The clamping blocks (19) are matched with the clamping groove (17). An inserting rod (18) is inserted into the top of the mounting post (3).

7. The spraying device for uniformly spraying a lithium battery separator according to claim 5, characterized in that, Support columns (15) are fixedly installed at the bottom of the processing box (2). The bottoms of the support columns (15) are fixedly connected with the base (1). A transparent glass plate (16) is arranged on the front of the processing box (2).

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