Double-sided spraying equipment for battery diaphragm production

Abstract

The utility model discloses double-sided spraying equipment for battery diaphragm production, which relates to the technical field of battery diaphragm production and comprises a spraying box, two groups of drying components are mounted on the spraying box, each drying component comprises a drying box, a mounting frame is fixedly mounted on the outer side of the drying box, and the drying box is in bolt connection with the spraying box through the mounting frame. A filter plate is arranged at one end of the drying box, a drying pipe is connected to the other end of the drying box, a support is fixedly installed in the drying box, a first motor is installed on one side of the support, a fan is connected to the output end of the first motor, a heating plate is installed between the fan and the drying pipe, and a blocking groove is connected to the bottom of the drying pipe. The motor I in the drying box drives the fan to rotate, air is heated by the heating plate to form hot air, and the hot air is blown to a diaphragm through the drying pipe, so that the drying speed of a coating is greatly increased, and the problem that components cannot be effectively cured due to slow natural drying is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery separator production technology, specifically to a double-sided spraying equipment for battery separator production. Background Technology

[0002] Lithium-ion batteries use lithium metal or lithium alloy as the anode material and a non-aqueous electrolyte solution. In the structure of a lithium-ion battery, the separator is one of the key internal components. The performance of the separator determines the battery's interface structure, internal resistance, and other characteristics, directly affecting the battery's capacity, cycle life, and safety performance. A high-performance separator plays a crucial role in improving the overall performance of the battery.

[0003] Chinese utility model patent application number 202121376275.7 provides a double-sided spraying equipment for battery separator production. Nozzles are fixedly installed at opposite positions on the upper inner wall of the box. Through the cooperation of a pump and a conveying pipe, the paint inside the box can be transported to the nozzles through the conveying pipe. At this time, the nozzles can spray the battery separator roll. A feed hopper is fixedly installed inside the box to facilitate the diversion of paint falling on the battery separator roll, so that the paint is not wasted.

[0004] However, during the use of the above equipment, it was found that after the spraying was completed, the equipment used a motor to control the rotation of the winding roller to wind up the diaphragm. However, the coating on the wound diaphragm evaporated slowly under natural conditions, and the binders, polymers and other components in the coating were difficult to form a stable structure, which could not achieve the expected curing effect. As a result, the components in the liquid coating were prone to uneven flow and aggregation under the influence of gravity, resulting in uneven coating thickness, with some areas being too thick or too thin. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a double-sided spraying equipment for battery separator production, which solves the problem mentioned in the background technology that the coating dries slowly under natural conditions, resulting in the coating not being able to cure effectively.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-sided spraying equipment for battery separator production, comprising a spraying box, on which two sets of drying components are installed, each drying component including a drying box, an installation frame fixedly installed on the outside of the drying box, the drying box being bolted to the spraying box via the installation frame, a filter plate being provided at one end of the drying box, a drying pipe being connected to the other end of the drying box, a support being fixedly installed inside the drying box, a motor being installed on one side of the support, a fan being connected to the output end of the motor, a heating plate being installed between the fan and the drying pipe, and a baffle groove being connected to the bottom of the drying pipe, the baffle groove being flared and communicating with the drying pipe.

[0007] Preferably, a storage box is installed on the back side of the spraying box, and two sets of feed pipes are connected to the storage box. The feed pipes are connected to the spraying pipes, and the spraying pipes are equipped with baffles.

[0008] Preferably, a drying pipe and a spraying pipe are provided above and below the inner cavity of the spraying box.

[0009] Preferably, a fixing rod is fixedly installed above and below the inner cavity of the spray box, and a rotating roller is rotatably mounted on the fixing rod.

[0010] Preferably, a placement plate is fixed on the outer side of the spray box, a sliding rod is fixedly installed in the moving groove on the placement plate, a moving frame is slidably installed on the sliding rod, and the moving frame is connected to the inner wall of the moving groove by a spring.

[0011] Preferably, a turntable is rotatably mounted on the movable frame, a positioning rod is fixedly mounted on the turntable, and a second motor is mounted on the movable frame at one end of the placement plate, with the output end of the second motor connected to the turntable.

[0012] This utility model provides a double-sided spraying equipment for battery separator production. It has the following beneficial effects:

[0013] (1) The present invention uses a motor in the drying oven to drive the fan to rotate. The air is heated by the heating plate to form hot air and blown to the diaphragm through the drying pipe, which greatly speeds up the drying speed of the coating and avoids the problem that the components cannot be effectively cured due to slow natural drying.

[0014] (2) By setting up a slide bar, a spring and a moving frame, this utility model can quickly clamp and disassemble the take-up roller and the output roller, thereby improving the efficiency of diaphragm replacement.

[0015] This solves the problem of slow drying of coatings under natural conditions, which prevents the coatings from curing effectively. Attached Figure Description

[0016] Figure 1 This is a diagram showing the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Diagram showing the back structure of the spray coating box;

[0018] Figure 3 This utility model Figure 1 Internal structure diagram of the spray coating box;

[0019] Figure 4 This utility model Figure 2 Diagram showing the structure of the drying component;

[0020] Figure 5 This utility model Figure 1 A structural diagram showing the placement of the plate in the middle.

[0021] In the diagram, 1. Spraying box; 11. Storage box; 12. Feed pipe; 13. Rotating roller; 14. Spraying pipe; 15. Fixing rod; 2. Placement plate; 21. Sliding rod; 22. Spring; 23. Moving frame; 24. Turntable; 241. Positioning rod; 25. Motor II; 3. Drying assembly; 31. Drying box; 32. Drying pipe; 33. Support; 34. Motor I; 35. Fan; 36. Heating plate; 37. Filter plate; 4. Mounting frame; 5. Baffle groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1:

[0024] Please see Figures 1-5 A double-sided spraying equipment for battery separator production includes a spraying box 1, on which two sets of drying components 3 are installed. The drying components 3 include a drying box 31. A mounting frame 4 is fixedly installed on the outside of the drying box 31. The drying box 31 is bolted to the spraying box 1 through the mounting frame 4. A filter plate 37 is provided at one end of the drying box 31. A drying pipe 32 is connected to the other end of the drying box 31. A bracket 33 is fixedly installed inside the drying box 31. A motor 34 is installed on one side of the bracket 33. A fan 35 is connected to the output end of the motor 34. A heating plate 36 is installed between the fan 35 and the drying pipe 32. A baffle 5 is connected to the bottom of the drying pipe 32. The baffle 5 is funnel-shaped and communicates with the drying pipe 32.

[0025] A material storage box 11 is installed on the back side of the spraying box 1. Two sets of feed pipes 12 are connected to the material storage box 11. The feed pipes 12 are connected to the spraying pipes 14. A baffle 5 is installed on the spraying pipes 14.

[0026] Drying pipe 32 and spraying pipe 14 are installed at the top and bottom of the inner cavity of the spraying box 1;

[0027] Fixed rods 15 are fixedly installed above and below the inner cavity of the spray box 1, and rotating rollers 13 are rotatably mounted on the fixed rods 15.

[0028] Specifically, the diaphragm passes sequentially through the spray pipe 14, drying pipe 32, and rotating roller 13 above the inner cavity of the spray box 1, and then through the rotating roller 13, spray pipe 14, and drying pipe 32 below the inner cavity of the spray box 1. Solenoid valves are installed on both sets of feed pipes 12.

[0029] In the drying assembly 3, the motor 34 inside the drying chamber 31 drives the fan 35 to rotate, drawing air into the drying chamber 31. After being filtered by the filter plate 37, the air enters the interior of the drying chamber 31 and is then heated by the heating plate 36. The hot air is blown by the fan 35 towards the drying tube 32. The opening direction and shape design of the trumpet-shaped baffle 5 help guide the hot air and paint to be concentrated and sprayed onto the diaphragm, making the spraying and drying efficiency higher.

[0030] When the diaphragm enters the spraying box 1, it first passes through the spraying pipe 14 at the top of the inner cavity. At this time, the solenoid valve at the top opens, and the coating material in the storage tank 11 is sprayed onto the upper surface of the diaphragm in a suitable manner through the feed pipe 12 and the spraying pipe 14 for the first side spraying. After the diaphragm completes the first side spraying through the upper spraying pipe 14, it immediately passes through the upper drying pipe 32. Hot air is blown from the drying pipe 32 onto the upper surface of the diaphragm, causing the solvent in the first side coating to evaporate quickly, achieving the drying of the first side. As the diaphragm continues to move, its direction is changed by the rotating rollers 13 at the top and bottom of the inner cavity of the spraying box 1, so that the original lower surface faces upward. Next, the diaphragm passes through the lower spraying pipe 14. At this time, the solenoid valve at the bottom opens, and the coating material is sprayed onto the other side of the diaphragm, thus completing the two-sided spraying operation. The diaphragm then passes through the lower drying pipe 32, and hot air dries the coating on the lower surface of the diaphragm in the same way, thus achieving synchronous drying of both sides of the diaphragm.

[0031] Example 2:

[0032] To improve diaphragm replacement efficiency, please refer to [link / reference]. Figures 1-5 Based on Example 1, a placement plate 2 is fixed on the outer side of the spray box 1, a sliding rod 21 is fixedly installed in the moving groove on the placement plate 2, a moving frame 23 is slidably installed on the sliding rod 21, and the moving frame 23 is connected to the inner wall of the moving groove by a spring 22.

[0033] A turntable 24 is rotatably mounted on the movable frame 23. A positioning rod 241 is fixedly installed on the turntable 24. A motor 25 is mounted on the movable frame 23 at one end of the placement plate 2. The output end of the motor 25 is connected to the turntable 24.

[0034] Specifically, two sets of placement plates 2 are provided on one side of the spray box 1. The upper placement plate 2 is used to place the output roller, and the lower placement plate 2 is used to place the take-up roller. The placement plate 2 has a moving groove, and the slide rod 21 is fixed in the moving groove. The moving frame 23 is slidably mounted on the slide rod 21 and is connected to the inner wall of the moving groove by a spring 22. This elastic sliding structure allows the moving frame 23 to move flexibly on the placement plate 2. When it is necessary to install the output roller or the take-up roller, the moving frame 23 can be pulled outward (overcoming the elastic force of the spring 22) to make enough space for the roller to be placed. The turntable 24 rotatably mounted on the moving frame 23 and the positioning rod 241 fixed on the turntable 24 play an auxiliary positioning role. When placing the output roller or take-up roller, the position of the positioning rod 241 is adjusted by rotating the turntable 24 so that it can match the positioning hole on the roller, thereby quickly and accurately determining the position of the roller. This not only facilitates installation, but also ensures that the roller can be easily driven to rotate by the motor 25 during operation. After installation, the moving frame 23 is released, and under the action of the spring 22, the moving frame 23 will automatically reset, so that the roller is stably placed on the placement plate 2. This facilitates the installation of new output rollers and take-up rollers and reduces the operation steps and time when replacing diaphragms.

[0035] Working principle: When using the equipment, the output roller is installed on the placement plate 2 above one side of the spray box 1. First, pull the moving frame 23 outward along the slide bar 21 to place the output roller on the moving frame 23. Then, release the moving frame 23. Under the action of the spring 22, the moving frame 23 automatically returns to its original position, allowing the output roller to be placed stably. In the same way, install the take-up roller on the placement plate 2 below. Ensure that the take-up roller is firmly installed and can rotate smoothly so that the diaphragm after spraying and drying can be wound up subsequently.

[0036] The traction belt on the take-up roller is connected to the diaphragm on the output roller. The take-up roller is used to wind up the diaphragm and lead the starting end out of the output roller, so that it enters the upper part of the inner cavity of the spray box 1. When it passes the spray pipe 14 above the inner cavity, the solenoid valve on the upper feed pipe 12 is opened. The coating material in the storage tank 11 is sprayed evenly onto the upper surface of the diaphragm under pressure through the feed pipe 12 and the spray pipe 14, starting the first side spraying. After spraying, the diaphragm continues to move forward and passes the upper drying pipe 32. At this time, the hot air is concentrated and blown onto the upper surface of the diaphragm by the drying component 3 under the guidance of the baffle 5, realizing the drying of the first side. After drying, the diaphragm continues to move and changes direction by the rotating rollers 13 above and below the inner cavity of the spray box 1, so that the original lower surface faces upward. Then, the spray pipe 14 and the drying pipe 32 below the inner cavity of the spray box 1 are used to spray and dry the other side of the diaphragm. After the diaphragm has completed double-sided spraying and drying, it is wound up on the take-up roller.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-sided spraying equipment for battery separator production, comprising a spraying box (1), characterized in that: Two sets of drying components (3) are installed on the spray box (1). The drying components (3) include a drying box (31). A mounting bracket (4) is fixedly installed on the outside of the drying box (31). The drying box (31) is bolted to the spray box (1) through the mounting bracket (4). A filter plate (37) is provided at one end of the drying box (31). A drying pipe (32) is connected to the other end of the drying box (31). A bracket (33) is fixedly installed inside the drying box (31). A motor (34) is installed on one side of the bracket (33). A fan (35) is connected to the output end of the motor (34). A heating plate (36) is installed between the fan (35) and the drying pipe (32). A baffle (5) is connected to the bottom of the drying pipe (32). The baffle (5) is horn-shaped and communicates with the drying pipe (32).

2. The double-sided spraying equipment for battery separator production according to claim 1, characterized in that: A storage box (11) is installed on the back side of the spray box (1). Two sets of feed pipes (12) are connected to the storage box (11). The feed pipes (12) are connected to the spray pipes (14). A baffle (5) is installed on the spray pipes (14).

3. The double-sided spraying equipment for battery separator production according to claim 2, characterized in that: The spraying box (1) is equipped with a drying pipe (32) and a spraying pipe (14) above and below the inner cavity.

4. The double-sided spraying equipment for battery separator production according to claim 3, characterized in that: The spray box (1) has fixed rods (15) fixedly installed above and below the inner cavity, and a rotating roller (13) is rotatably mounted on the fixed rods (15).

5. The double-sided spraying equipment for battery separator production according to claim 1, characterized in that: A placement plate (2) is fixed on the outside of the spray box (1). A slide rod (21) is fixedly installed in the moving groove on the placement plate (2). A moving frame (23) is slidably installed on the slide rod (21). The moving frame (23) is connected to the inner wall of the moving groove by a spring (22).

6. The double-sided spraying equipment for battery separator production according to claim 5, characterized in that: A turntable (24) is rotatably mounted on the movable frame (23), and a positioning rod (241) is fixedly installed on the turntable (24). A second motor (25) is installed on the movable frame (23) at one end of the placement plate (2), and the output end of the second motor (25) is connected to the turntable (24).

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