Coating device for preparing positive electrode material

Abstract

The utility model discloses a cladding device for preparing a positive electrode material, and relates to the technical field of positive electrode material cladding, the cladding device comprises a support frame, a stirring cladding mechanism is arranged in the support frame, a bevel gear III is arranged, then a motor is started, at the moment, the motor drives a connecting shaft to rotate, and the stirring cladding mechanism is arranged in the support frame. Then a connecting shaft drives a bevel gear II on the surface to rotate, then the bevel gear II drives a bevel gear I on the surface of a rotating shaft and a bevel gear III on the surface of a sleeve shell to rotate, and at the moment, the bevel gear I and the bevel gear III rotate in opposite directions; at the moment, the sleeve shell and the rotating shaft can respectively drive the rotating plates on the surfaces of the sleeve shell and the rotating shaft to rotate in opposite directions, and then the rotating plates can drive the stirring blades in the rotating plates to rotate, so that the coating effect of the material can be improved, and the stability and adhesive force of a coating layer can be ensured; and the positive electrode material and the coating material are enabled to be uniformly coated on the surface of the positive electrode material.

Description

Technical Field

[0001] This utility model belongs to the field of cathode material coating technology, and in particular relates to a coating device for preparing cathode materials. Background Technology

[0002] Cathode materials play a crucial role in lithium battery manufacturing, and their performance directly affects the battery's energy density, cycle life, and safety. To improve the performance of cathode materials, they are usually treated with coating technology. Coating can effectively improve the material's conductivity, stability, and compatibility with the electrolyte, thereby enhancing the overall performance of the battery.

[0003] According to the published patent CN217698821U, this utility model discloses a cathode material mixing and coating device, belonging to the field of material mixing machinery technology. It includes a mixing tank, with a solid feed pipe and a liquid feed pipe connected to the top of the mixing tank, and a discharge pipe connected to the bottom of the mixing tank. A motor is fixedly connected to the top of the mixing tank, and the motor's output shaft extends into the mixing tank and is fixedly connected to a stirring shaft. A retaining ring is threaded onto the outer surface of the liquid feed pipe, with the end of the retaining ring near the inlet of the liquid feed pipe being flared. This cathode material mixing and coating device, by providing two feed pipes at the top of the mixing tank, allows the user to choose between dry or wet methods to prepare cathode materials based on the characteristics of different materials. The user can then operate the stirring shaft via the motor to rotate it, ensuring thorough mixing of different materials and enabling rapid preparation of cathode materials. However, it still has the following shortcomings:

[0004] During the mixing and coating process of the positive electrode material, the stirring shaft rotates in one direction, which may lead to uneven mixing and coating. This is especially true for viscous materials, where the unidirectional rotation of the stirring shaft can easily cause the material to accumulate or stagnate inside the mixing tank. Therefore, we provide a coating device for the preparation of positive electrode materials. Utility Model Content

[0005] The purpose of this invention is to provide a coating device for preparing positive electrode materials. The device uses bevel gear two to drive bevel gear one and bevel gear three to rotate in opposite directions, thereby driving the bottom stirring plate to rotate in the opposite direction. This solves the problem that the existing stirring shaft rotates in one direction, which may lead to uneven mixing and coating.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a coating device for preparing positive electrode materials, including a support frame, a stirring and coating mechanism is provided inside the support frame, a motor is provided on the right side of the stirring and coating mechanism, a filter mechanism is provided inside the support frame, and a connecting shaft is fixedly connected to the bottom output end of the motor through a coupling.

[0008] The stirring and coating mechanism includes an insulated shell, a heater fixedly connected to the inner wall of the insulated shell, a stirring tank fixedly connected to the inner wall of the insulated shell, a feed pipe fixedly connected to the top of the stirring tank, a sleeve rotatably connected to the inner wall of the stirring tank, a rotating shaft rotatably connected to the inner wall of the stirring tank, a bevel gear one fixedly connected to the outer surface of the rotating shaft, a bevel gear three fixedly connected to the outer surface of the sleeve, a bevel gear two fixedly connected to the outer surface of the connecting shaft, a rotating plate fixedly connected to the outer surface of the sleeve, a scraper fixedly connected to the bottom of the rotating plate, a stirring blade fixedly connected to the bottom of the rotating plate, and a valve fixedly connected to the bottom of the stirring tank.

[0009] Furthermore, the second bevel gear meshes with the first bevel gear, the second bevel gear meshes with the third bevel gear, the outer surface of the scraper contacts the inner wall of the mixing tank, there are two rotating plates, the outer surface of the housing and the rotating shaft are both fixedly connected to the rotating plates, and the inner wall of the housing is rotatably connected to the outer surface of the rotating shaft.

[0010] Furthermore, the filtration mechanism includes a base plate, the inner wall of which is fixedly connected to the outer surface of the support frame.

[0011] Furthermore, a collection box is fixedly connected to the top of the base plate, a sliding door is slidably connected to the inner wall of the collection box, and a fixed frame is rotatably connected to the outer surface of the connecting shaft.

[0012] Furthermore, the outer wall of the fixed frame is fixedly connected to the inner wall of the motor, a pulley is fixedly connected to the outer surface of the connecting shaft, a belt is driven to the inner wall of the pulley, and a second pulley is driven to the inner end of the belt away from the pulley.

[0013] Furthermore, a rotating shaft is fixedly connected to the inner wall of the second pulley, the outer surface of the rotating shaft is rotatably connected to the inner wall of the fixed frame, and the outer surface of the rotating shaft is rotatably connected to the inner wall of the collection box.

[0014] Furthermore, an eccentric wheel is fixedly connected to the outer surface of the rotating shaft, a telescopic rod is fixedly connected to the inner wall of the collection box, and a compression spring is fixedly connected to the inner wall of the collection box.

[0015] Furthermore, a filter plate is fixedly connected to the top of the compression spring, and the bottom of the filter plate is fixedly connected to the top of the telescopic rod. There are two compression springs in total.

[0016] This utility model has the following beneficial effects:

[0017] This invention incorporates a third bevel gear. When the motor is started, it drives the connecting shaft to rotate, which in turn drives a second bevel gear on its surface to rotate. This second bevel gear then drives a first bevel gear on the rotating shaft and a third bevel gear on the casing surface to rotate. The first and third bevel gears rotate in opposite directions. This causes the casing and the rotating shaft to drive rotating plates on their surfaces to rotate in the opposite direction. The rotating plates then drive the internal stirring blades to rotate. This not only improves the coating effect of the material but also ensures the stability and adhesion of the coating layer, ensuring that the positive electrode material and the coating material are evenly coated on the surface of the positive electrode material.

[0018] This invention utilizes a filter plate. After the material is coated, the valve at the bottom of the mixing tank can be opened, allowing the material inside the tank to flow onto the filter plate. Simultaneously, the rotating shaft drives a pulley, which in turn drives a belt, which in turn drives a rotating shaft. This rotating shaft then causes two eccentric wheels on its surface to rotate in a circular motion. These eccentric wheels rhythmically press against the filter plate at the bottom, compressing it and pressing down on the compression springs on both sides. When the eccentric wheels are not in contact with the filter plate, the compression springs cause the filter plate to return to its original position. This reciprocating motion causes the filter plate to vibrate continuously, filtering out uneven particles or agglomerates generated during the coating process. This helps ensure the uniformity of the material's particle size and the integrity of the coating layer, improving the performance of the battery material and facilitating subsequent processing.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a top view schematic diagram of the pulley structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the collection box of this utility model;

[0024] Figure 4This is a cross-sectional structural diagram of the thermal insulation shell of this utility model;

[0025] Figure 5 This is a schematic diagram of the scraper structure of this utility model.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Filtration mechanism; 101. Collection box; 102. Sliding door; 103. Base plate; 104. Fixing frame; 105. Belt pulley one; 106. Belt pulley two; 107. Belt; 108. Rotating shaft; 109. Eccentric wheel; 110. Filter plate; 111. Compression spring; 112. Telescopic rod; 2. Stirring and covering mechanism; 201. Insulation shell; 202. Heater; 203. Valve; 204. Shell; 205. Rotating shaft; 206. Feed pipe; 207. Bevel gear one; 208. Bevel gear two; 209. Bevel gear three; 210. Rotating plate; 211. Scraper; 212. Stirring tank; 213. Stirring blade; 3. Motor; 4. Support frame; 5. Connecting shaft. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 As shown, this utility model is a coating device for preparing positive electrode materials, including a support frame 4, a stirring and coating mechanism 2 is provided inside the support frame 4, a motor 3 is provided on the right side of the stirring and coating mechanism 2, a filter mechanism 1 is provided inside the support frame 4, and a connecting shaft 5 is fixedly connected to the bottom output end of the motor 3 through a coupling.

[0030] The mixing and coating mechanism 2 includes an insulation shell 201. The insulation shell 201 prevents excessive heat loss when the heater 202 heats the mixing tank 212, avoiding negative impacts on the coating effect due to temperature fluctuations, and improving production efficiency and product quality. The heater 202 is fixedly connected to the inner wall of the insulation shell 201. The heater 202 promotes the flowability and adhesion of the coating material, allowing it to cover the substrate surface more evenly. The mixing tank 212 is fixedly connected to the inner wall of the insulation shell 201. An inlet pipe 206 is fixedly connected to the top of the mixing tank 212, allowing material to be poured into the mixing tank 212. The inner wall of the mixing tank 212... A casing 204 is rotatably connected to the mixing tank 212. The casing 204 drives the rotating plate 210 on its surface to rotate, thereby thoroughly mixing the materials. A rotating shaft 205 is rotatably connected to the inner wall of the mixing tank 212. A bevel gear 207 is fixedly connected to the outer surface of the rotating shaft 205. A bevel gear 209 is fixedly connected to the outer surface of the casing 204. A bevel gear 208 is fixedly connected to the outer surface of the connecting shaft 5. The motor 3 drives the connecting shaft 5 to rotate, which in turn drives the bevel gear 208 on the surface of the connecting shaft 5 to rotate. The bevel gear 208 then drives the top bevel gear 207 and the bottom bevel gear 209 to rotate. The bevel gear 207 rotates in the opposite direction, causing the rotating plate 210 on the surface of the casing 204 and the rotating shaft 205 to rotate in the opposite direction. This ensures that the coating material is evenly distributed on the substrate surface, avoiding uneven coating and guaranteeing the consistency and stability of the coating effect. The rotating plate 210 is fixedly connected to the outer surface of the casing 204, and a scraper 211 is fixedly connected to the bottom of the rotating plate 210. The scraper 211 scrapes the inner wall of the mixing tank 212 when the casing 204 and the rotating shaft 205 rotate, thus preventing the material from sticking to the inner wall. A stirring blade 213 is fixedly connected to the bottom of the rotating plate 210. The stirring plate 213 assists the rotating plate 210 in stirring. A valve 203 is fixedly connected to the bottom of the stirring tank 212, allowing the coated material to flow out from the inside of the stirring tank 212. The second bevel gear 208 meshes with the first bevel gear 207, and the second bevel gear 208 meshes with the third bevel gear 209. The outer surface of the scraper 211 contacts the inner wall of the stirring tank 212. There are two rotating plates 210. The outer surfaces of the housing 204 and the rotating shaft 205 are both fixedly connected to the rotating plates 210. The inner wall of the housing 204 is rotatably connected to the outer surface of the rotating shaft 205. The filter mechanism 1 includes a base plate 103, and the inner wall of the base plate 103 is fixedly connected to the outer surface of the support frame 4.

[0031] A collection box 101 is fixedly connected to the top of the base plate 103. A sliding door 102 is slidably connected to the inner wall of the collection box 101. By pulling the sliding door 102, the door can be disengaged from the inside of the collection box 101, thereby collecting the material inside the collection box 101. A fixing frame 104 is rotatably connected to the outer surface of the connecting shaft 5. The fixing frame 104 can fix the motor 3. The outer wall of the fixing frame 104 is fixedly connected to the inner wall of the motor 3. A pulley 105 is fixedly connected to the outer surface of the connecting shaft 5. The rotation of the connecting shaft 5 drives the pulley 105 to rotate, thereby driving the belt 107 to rotate. A belt 107 is driven to the inner wall of pulley 105. The rotation of belt 107 drives pulley 106 at its bottom to rotate, which in turn drives the rotating shaft 108 to rotate. The end of the inner wall of belt 107 away from pulley 105 is driven to pulley 106. The rotating shaft 108 is fixedly connected to the inner wall of pulley 106. The rotation of rotating shaft 108 drives the eccentric wheels 109 on both sides of its surface to rotate, thereby squeezing the filter plate 110. The outer surface of rotating shaft 108 is rotatably connected to the inner wall of fixed frame 104 and the inner wall of collection box 101.

[0032] An eccentric wheel 109 is fixedly connected to the outer surface of the rotating shaft 108. The eccentric wheel 109 can regularly press the filter plate 110 downward when the rotating shaft 108 rotates. A telescopic rod 112 is fixedly connected to the inner wall of the collection box 101. The telescopic rod 112 can limit the extension or retraction of the compression spring 111, allowing it to move up and down in a straight line. A compression spring 111 is fixedly connected to the inner wall of the collection box 101. When the filter plate 110 is pressed down by the eccentric wheel 109, the compression spring 111 will retract. The filter plate 110 is fixedly connected to the top of the compression spring 111. The filter plate 110 can effectively screen and filter the coated material, removing excess coated material or impurities, ensuring a purer final product and avoiding unnecessary waste. The bottom of the filter plate 110 is fixedly connected to the top of the telescopic rod 112. There are two compression springs 111.

[0033] One specific application of this embodiment is:

[0034] When coating materials are required, the coating material and the positive electrode material are first poured into the mixing tank 212 through the feed pipe 206. Then, the motor 3 is started, which drives the connecting shaft 5 to rotate. The connecting shaft 5 then drives the second bevel gear 208 on its surface to rotate. The second bevel gear 208 then drives the first bevel gear 207 on the surface of the rotating shaft 205 and the third bevel gear 209 on the surface of the casing 204 to rotate. At this time, the first bevel gear 207 and the third bevel gear 209 will rotate in opposite directions, thereby driving the casing 204 and the rotating shaft 205 to rotate in opposite directions. 204 and the rotating shaft 205 will drive the rotating plate 210 on their surfaces to rotate in opposite directions. At the same time, the two rotating plates 210 will also drive the scraper 211 to scrape the inner wall of the mixing tank 212. Subsequently, the rotating plate 210 will also drive the internal stirring plate 213 to rotate. While coating, the heater 202 inside the heat preservation shell 201 can also be activated to heat the mixing tank 212, thereby promoting the fluidity and adhesion of the coating material. This not only improves the coating effect of the material, but also ensures the stability and adhesion of the coating layer, so that the positive electrode material and the coating material are evenly coated on the surface of the positive electrode material.

[0035] After the material is coated, the valve 203 at the bottom of the mixing tank 212 can be opened. The material inside the mixing tank 212 will then flow into the surface of the filter plate 110. Simultaneously, the rotating shaft 5 will also drive the pulley 105 to rotate. The pulley 105 will then drive the belt 107 to rotate, which in turn will drive the rotating shaft 108 to rotate. The rotating shaft 108 will then drive the eccentric wheels 109 on both sides of its surface to rotate in a circular motion. At this time, the eccentric wheels 109 will periodically press against the bottom of the filter plate. The filter plate 110 is pressed down, which in turn presses down the compression springs 111 on both sides, compressing it. At the same time, when the eccentric wheel 109 is not in contact with the filter plate 110, the compression springs 111 will drive the filter plate 110 to reset. This process is repeated, causing the filter plate 110 to shake up and down continuously. This helps to filter out uneven particles or agglomerates generated during the coating process, which helps to ensure the uniformity of the material particle size and the integrity of the coating layer, improves the performance of the battery material and facilitates the smooth progress of subsequent processing.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A coating device for preparing a positive electrode material, comprising a support frame (4), wherein a stirring and coating mechanism (2) is disposed inside the support frame (4), a motor (3) is disposed on the right side of the stirring and coating mechanism (2), a filter mechanism (1) is disposed inside the support frame (4), and a connecting shaft (5) is fixedly connected to the bottom output end of the motor (3) via a coupling, characterized in that... ； The stirring and coating mechanism (2) includes an insulation shell (201), a heater (202) is fixedly connected to the inner wall of the insulation shell (201), a stirring tank (212) is fixedly connected to the inner wall of the insulation shell (201), an inlet pipe (206) is fixedly connected to the top of the stirring tank (212), a sleeve (204) is rotatably connected to the inner wall of the stirring tank (212), and a rotating shaft (205) is rotatably connected to the inner wall of the stirring tank (212). The outer surface of the rotating shaft (205) is fixed. A bevel gear 1 (207) is connected to the outer surface of the housing (204), a bevel gear 3 (209) is fixedly connected to the outer surface of the connecting shaft (5), a bevel gear 2 (208) is fixedly connected to the outer surface of the housing (204), a rotating plate (210) is fixedly connected to the outer surface of the housing (204), a scraper (211) is fixedly connected to the bottom of the rotating plate (210), a stirring plate (213) is fixedly connected to the bottom of the rotating plate (210), and a valve (203) is fixedly connected to the bottom of the stirring tank (212).

2. The coating device for preparing a positive electrode material according to claim 1, characterized in that, The second bevel gear (208) meshes with the first bevel gear (207), the second bevel gear (208) meshes with the third bevel gear (209), the outer surface of the scraper (211) contacts the inner wall of the mixing tank (212), there are two rotating plates (210), the outer surface of the sleeve (204) and the outer surface of the rotating shaft (205) are both fixedly connected to the rotating plate (210), and the inner wall of the sleeve (204) is rotatably connected to the outer surface of the rotating shaft (205).

3. The coating device for preparing a positive electrode material according to claim 1, characterized in that, The filtration mechanism (1) includes a base plate (103), the inner wall of which is fixedly connected to the outer surface of the support frame (4).

4. The coating device for preparing a positive electrode material according to claim 3, characterized in that, A collection box (101) is fixedly connected to the top of the base plate (103), a sliding door (102) is slidably connected to the inner wall of the collection box (101), and a fixing frame (104) is rotatably connected to the outer surface of the connecting shaft (5).

5. The coating device for preparing a positive electrode material according to claim 4, characterized in that, The outer wall of the fixed frame (104) is fixedly connected to the inner wall of the motor (3). A pulley (105) is fixedly connected to the outer surface of the connecting shaft (5). A belt (107) is driven to the inner wall of the pulley (105). A pulley (106) is driven to the end of the inner wall of the belt (107) away from the pulley (105).

6. The coating device for preparing a positive electrode material according to claim 5, characterized in that, A rotating shaft (108) is fixedly connected to the inner wall of the second pulley (106). The outer surface of the rotating shaft (108) is rotatably connected to the inner wall of the fixed frame (104). The outer surface of the rotating shaft (108) is rotatably connected to the inner wall of the collection box (101).

7. The coating device for preparing a positive electrode material according to claim 6, characterized in that, An eccentric wheel (109) is fixedly connected to the outer surface of the rotating shaft (108), a telescopic rod (112) is fixedly connected to the inner wall of the collection box (101), and a compression spring (111) is fixedly connected to the inner wall of the collection box (101).

8. The coating apparatus for preparing a positive electrode material according to claim 7, characterized in that, The top of the compression spring (111) is fixedly connected to the filter plate (110), and the bottom of the filter plate (110) is fixedly connected to the top of the telescopic rod (112). There are two compression springs (111).

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