Cathode material coating device

Abstract

The utility model discloses a cathode material coating device which comprises a supporting frame, a tank body is fixedly connected in the supporting frame, a box body is fixedly connected to the upper surface of the supporting frame, a fixing block is fixedly connected to the lower bottom wall of the box body, an air cylinder is fixedly connected to the upper surface of the fixing block, and a right-angle plate is fixedly connected to the output end of the air cylinder. A cylinder is fixedly connected to the upper surface of the right-angle plate, a lap joint plate is fixedly connected to the top of the tank body, a spring is fixedly connected to the lower surface of the lap joint plate, and a fixing disc is fixedly connected to the bottom end of the spring. By means of the structure, the coating agent is quantitatively filled through the barrel, the right-angle plate is pushed to drive the barrel to move, meanwhile, the upper side plate face of the right-angle plate can prevent the coating agent in the storage cavity of the box body from leaking, and then the coating agent can quantitatively enter the applying disc; and the coating agent is uniformly distributed on the surface of the negative electrode material under the action of the applying disc and the spring, and then low-speed stirring is performed, so that uniform covering of the coating agent on the surface of the material can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field, especially relates to negative material coating device. BACKGROUND

[0002] The negative material coating device is a device or system for coating the negative material during the battery manufacturing process. The negative electrode is the cathode of the battery, which, together with the positive electrode, forms the basic structure of the battery. In batteries such as lithium-ion batteries, the negative electrode is usually made of materials such as graphite. The function of the coating device is to evenly coat or cover the negative material on the metal foil to form a complete negative electrode sheet. For example, a lithium-ion electrode material carbon coating device is disclosed in Chinese patent CN202120659742.0. The mixed material is dried and sintered by the drying and sintering device, and then falls onto the automatic discharge grinder for grinding after the drying and sintering is completed. This improves the production efficiency, is simple and convenient to operate, and reduces the production cost. However, the mixing shaft directly mixes the negative material and the coating agent, which may cause uneven mixing in some areas. Therefore, the mixing time needs to be lengthened, which will affect the overall effect of material coating. SUMMARY

[0003] The utility model discloses a negative material coating device, which can ensure the uniform coverage of the coating agent on the material surface. The device includes a cylinder, a straight plate, a storage cavity, a distribution disc, a spring, and a low-speed stirring device. The cylinder is used to quantitatively fill the coating agent. When the straight plate pushes and moves the cylinder, the upper surface of the straight plate can prevent the coating agent in the storage cavity from leaking. Then, the coating agent can be quantitatively filled into the distribution disc. Through the action of the distribution disc and the spring, the coating agent can be evenly distributed on the surface of the negative material. Then, low-speed stirring is performed to ensure the uniform coverage of the coating agent on the material surface.

[0004] The utility model discloses still provide with above negative pole material coating device, include: support frame, the inside fixedly connected with jar of support frame, the upper surface fixedly connected with box of support frame, be provided with storage cavity in the box, the lower bottom wall fixedly connected with fixed block of box, the upper surface fixedly connected with air cylinder of fixed block, the output fixedly connected with right angle board of air cylinder, the upper surface fixedly connected with cylinder of right angle board, the outside slidingly connected with inner groove board of right angle board, the outside fixed connection of inner groove board and box, motor, the upper surface fixedly connected with support frame of motor, the output fixedly connected with stirring shaft of motor, the top fixedly connected with the lapping plate of jar, the lower surface fixedly connected with spring of lapping plate, the bottom fixedly connected with the fixed disc of spring, the outside sliding connection of fixed disc and jar. Through the quantitative filling of coating agent to cylinder, when moving with the driving of cylinder that the right angle board is pushed, the upper side board surface of right angle board can prevent the leakage of coating agent in the storage cavity of box simultaneously, then coating agent can quantitatively enter the fixed disc, and coating agent is evenly distributed on the surface of negative pole material through the action of fixed disc and spring, and then low -speed stirring can ensure that coating agent uniformly covers on the material surface.

[0005] According to the negative pole material coating device, the inside of the right angle board is provided with the blanking opening which is communicated with the cylinder, the outlet of the inner groove plate is fixedly communicated with the connecting pipe, and the bottom end of the connecting pipe penetrates the inside of the support frame and extends into the inside of the fixed disc. Through the blanking opening, the coating agent in the inside of the cylinder can enter the connecting pipe and then slide into the inside of the fixed disc.

[0006] According to the negative pole material coating device, the bottom of the storage cavity of the box is provided with a through port, the through port of the storage cavity is located above the cylinder during butt joint, and the blanking opening of the right angle board is located above the connecting pipe during work. Through the through port of the storage cavity, the coating agent can enter the inside of the cylinder for quantitative storage, and subsequent quantitative addition is facilitated.

[0007] According to the negative pole material coating device, the outside of the jar is provided with a feeding hopper, and the feeding hopper is arranged along an inclination angle. The inclination angle is helpful for the negative pole material to naturally slide under the action of gravity, reduces blockage, and ensures that the material can smoothly enter the jar.

[0008] According to the negative pole material coating device, the bottom of the fixed disc is provided with a plurality of distribution holes, and the cross section of the fixed disc is a platform structure gradually decreasing from top to bottom. The plurality of distribution holes can uniformly disperse the coating agent or the material, avoid local accumulation or uneven distribution, thereby improving the uniformity and consistency of coating.

[0009] The utility model discloses a negative electrode material coating device, the top of box is provided with the box mouth, the outside screw thread connection of box mouth has the top cap, the screw thread connection can ensure that the top cap is closely attached to the box mouth, prevents the outside impurity from entering the inside of box.

[0010] The utility model discloses a negative electrode material coating device, the bottom fixed connection of stirring shaft has two symmetrical arrangement's scraper, two the lower surface of scraper and the lower bottom wall of jar body are contacted, the electrode material of the bottom accumulation of jar body is cleaned through the scraper.

[0011] The utility model discloses a negative electrode material coating device, the bottom of jar body is provided with the discharge port, and the connecting place of discharge port and jar body is provided with the discharge valve, through the quick opening and closing function of discharge valve, can realize the continuous or intermittent discharge of material.

[0012] Beneficial effect: compared with prior art, the novel negative electrode material coating device, through the quantitative filling of coating agent to cylinder, when the cylinder is moved by the straight angle board push, the upper side of straight angle board can prevent the leakage of coating agent in the storage cavity of box, then the coating agent can be quantitatively entered into the fixed disc, and the coating agent is evenly distributed on the surface of negative electrode material through the action of fixed disc and spring, and then low speed stirring can ensure that the coating agent is evenly covered on the surface of material. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model is further illustrated below in connection with the drawings and examples;

[0014] Figure 1 It is the complete structure diagram of the utility model negative electrode material coating device;

[0015] Figure 2 It is the side view structure diagram of the utility model negative electrode material coating device;

[0016] Figure 3 It is the cut structure diagram of the utility model negative electrode material coating device;

[0017] Figure 4 It is the box structure diagram of the utility model negative electrode material coating device;

[0018] Figure 5 It is the quantitative material distribution mechanism structure diagram of the utility model negative electrode material coating device.

[0019] Legend:

[0020] 1, support frame; 2, tank body; 3, box body; 4, storage cavity; 5, fixed block; 6, air cylinder; 7, right angle plate; 8, cylinder; 9, inner groove plate; 10, stirring shaft; 11, lap plate; 12, spring; 13, fixed disc; 14, blanking port; 15, connecting pipe; 16, through hole; 17, feed hopper; 18, distribution hole; 19, box opening; 20, top cover; 21, scraper; 22, discharge port; 23, discharge valve; 24, motor. DETAILED DESCRIPTION

[0021] This part will describe the specific embodiments of the utility model in detail, the preferred embodiments of the utility model are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0022] Referring to Figures 1-5 , the negative material coating device of the utility model embodiment, it includes: support frame 1, the inside fixedly connected with tank body 2 of support frame 1, the outside of tank body 2 is provided with feed hopper 17, feed hopper 17 is along the inclination angle setting, the upper surface of support frame 1 is fixedly connected with box body 3, the inside of box body 3 is provided with storage cavity 4, the lower bottom wall of box body 3 is fixedly connected with fixed block 5, the upper surface of fixed block 5 is fixedly connected with air cylinder 6, the output end of air cylinder 6 is fixedly connected with right angle plate 7, the upper surface of right angle plate 7 is fixedly connected with cylinder 8, the outside of right angle plate 7 is slidably connected with inner groove plate 9, the outside of inner groove plate 9 is fixedly connected with box body 3, the inside of right angle plate 7 is provided with blanking port 14 that is mutually connected with cylinder 8, the outlet of inner groove plate 9 is fixedly communicated with connecting pipe 15, the bottom end of connecting pipe 15 penetrates the inside of support frame 1 and extends to the inside of fixed disc 13;

[0023] Specifically, air cylinder 6 is started, so that air cylinder 6 is repeatedly pushed for a certain number of times, right angle plate 7 is moved, so that cylinder 8 moves to the position of connecting pipe 15 together, so that blanking port 14 at the connection of cylinder 8 and right angle plate 7 is aligned with the top end of connecting pipe 15, since the port radius of connecting pipe 15 is greater than blanking port 14, so that the leakage of coating agent can be avoided, and when cylinder 8 moves, the upper surface of right angle plate 7 will cover through hole 16 of storage cavity 4, so as to prevent the leakage of coating agent;

[0024] The upper surface of the motor 24 is fixedly connected to the support frame 1. The output end of the motor 24 is fixedly connected to the stirring shaft 10. The bottom end of the stirring shaft 10 is fixedly connected to two symmetrically arranged scrapers 21. The lower surfaces of the two scrapers 21 are in contact with the bottom wall of the tank 2. The top of the tank 2 is fixedly connected to the overlapping plate 11. The lower surface of the overlapping plate 11 is fixedly connected to the spring 12. The bottom end of the spring 12 is fixedly connected to the application plate 13. The bottom of the application plate 13 is provided with multiple distribution holes 18. The cross-section of the application plate 13 is a platform structure that gradually decreases from top to bottom. The outside of the application plate 13 is slidably connected to the tank 2. The bottom of the tank 2 is provided with a discharge port 22. The connection between the discharge port 22 and the tank 2 is provided with a discharge valve 23.

[0025] Specifically, the quantitatively filled coating agent enters the application plate 13 through the connecting pipe 15. Since the outside of the application plate 13 is connected by the spring 12, the application plate 13 will vibrate up and down in a small range along the inside of the tank 2 at the moment the coating agent falls. In addition, the inside of the tank 2 is provided with an inward protruding structure to prevent the vibration of the application plate 13 from being excessive, so that the application plate 13 will not affect the stirring shaft 10. This allows the coating agent inside the application plate 13 to be evenly distributed under vibration and fall evenly onto the negative electrode material inside the tank 2 through multiple distribution holes 18. Then, the motor 24 is started to drive the stirring shaft 10 to mix and stir the negative electrode material and the coating agent.

[0026] The bottom of the storage cavity 4 of the box body 3 is provided with a through opening 16. When the storage cavity 4 is connected, the through opening 16 is located above the cylinder 8. The discharge port 14 of the right angle plate 7 is located above the connecting pipe 15 when working. The top of the box body 3 is provided with a box opening 19. The external thread of the box opening 19 is connected to a top cover 20.

[0027] Specifically, the top cover 20 is opened and the coating agent is added into the storage cavity 4 of the box 3. Then, the box opening 19 is sealed with the top cover 20, and some of the powdered coating agent inside the storage cavity 4 will fall into the cylinder 8 for storage.

[0028] Working principle: First, open the top cover 20 and add the coating agent into the storage cavity 4 of the tank 3. Then, seal the opening 19 of the tank with the top cover 20. Some of the powdered coating agent inside the storage cavity 4 will fall into the cylinder 8 for storage. Next, a certain amount of negative electrode material is fed into the tank 2 through the feed hopper 17. Then, the cylinder 6 is started, causing the cylinder 6 to push repeatedly a certain number of times, moving the right-angle plate 7. This causes the cylinder 8 to move towards the position of the connecting pipe 15, so that the discharge port 14 at the connection between the cylinder 8 and the right-angle plate 7 is aligned with the top of the connecting pipe 15. At the same time, when the cylinder... After the movement of step 8, the upper surface of the right-angle plate 7 will seal the opening 16 of the storage cavity 4 to prevent leakage of the coating agent. The quantitatively filled coating agent will enter the application plate 13 through the connecting pipe 15. Since the outside of the application plate 13 is connected by the spring 12, the application plate 13 will vibrate up and down in a small range along the inside of the tank 2 at the moment the coating agent falls, so that the coating agent inside the application plate 13 can be evenly distributed under vibration and fall evenly onto the negative electrode material inside the tank 2 through multiple distribution holes 18. Then, the motor 24 is started to drive the stirring shaft 10 to mix and stir the negative electrode material and the coating agent.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A negative electrode material coating device, characterized in that, include: A support frame (1) is provided, with a tank (2) fixedly connected inside the support frame (1). A box (3) is fixedly connected to the upper surface of the support frame (1). A storage cavity (4) is provided inside the box (3). A fixing block (5) is fixedly connected to the lower bottom wall of the box (3). A cylinder (6) is fixedly connected to the upper surface of the fixing block (5). A right-angle plate (7) is fixedly connected to the output end of the cylinder (6). A cylinder (8) is fixedly connected to the upper surface of the right-angle plate (7). An inner groove plate (9) is slidably connected to the outside of the right-angle plate (7). The outside of the inner groove plate (9) is fixedly connected to the box (3). An electric motor (24) is fixedly connected to a support frame (1) on its upper surface. A stirring shaft (10) is fixedly connected to the output end of the electric motor (24). An overlapping plate (11) is fixedly connected to the top of the tank (2). A spring (12) is fixedly connected to the lower surface of the overlapping plate (11). An application plate (13) is fixedly connected to the bottom end of the spring (12). The outside of the application plate (13) is slidably connected to the tank (2).

2. The negative electrode material coating device according to claim 1, characterized in that, The right-angle plate (7) has a material discharge port (14) that communicates with the cylinder (8) inside. The outlet of the inner groove plate (9) is fixedly connected to a connecting pipe (15). The bottom end of the connecting pipe (15) passes through the interior of the support frame (1) and extends into the interior of the fixing plate (13).

3. The negative electrode material coating device according to claim 1, characterized in that, The storage cavity (4) of the box (3) is provided with an opening (16) at the bottom. The opening (16) of the storage cavity (4) is located above the cylinder (8) when docking. The material discharge port (14) of the right angle plate (7) is located above the connecting pipe (15) when working.

4. The negative electrode material coating device according to claim 1, characterized in that, The tank body (2) is provided with a feeding hopper (17) on its outside, and the feeding hopper (17) is arranged along an inclined angle.

5. The negative electrode material coating device according to claim 1, characterized in that, The bottom of the application plate (13) is provided with a plurality of distribution holes (18), and the cross-section of the application plate (13) is a platform structure that gradually decreases from top to bottom.

6. The negative electrode material coating device according to claim 1, characterized in that, The top of the box (3) is provided with a box opening (19), and a top cover (20) is threadedly connected to the outside of the box opening (19).

7. The negative electrode material coating device according to claim 1, characterized in that, The bottom end of the stirring shaft (10) is fixedly connected to two symmetrically arranged scrapers (21), and the lower surfaces of the two scrapers (21) are in contact with the bottom wall of the tank (2).

8. The negative electrode material coating device according to claim 1, characterized in that, The bottom of the tank (2) is provided with a discharge port (22), and a discharge valve (23) is provided at the connection between the discharge port (22) and the tank (2).

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