Process for preparing a battery cathode film-forming additive

Abstract

This invention relates to the field of battery cathode film-forming additive manufacturing technology, specifically a manufacturing process for battery cathode film-forming additives. It utilizes a manufacturing apparatus for battery cathode film-forming additives, comprising: S1, sulfonation reaction; S2, barium reaction; S3, acidification treatment; S4, esterification treatment; S5, extraction and purification; S6, crystallization and drying; S7, analysis and detection; and S8, conveying and filling. The manufacturing apparatus for battery cathode film-forming additives includes a fixing unit and a filling unit. This invention first seals the filling port of the filling barrel and evacuates the inside of the filling barrel. Then, filling is performed into the filling barrel. After filling, the sealing frame is sealed to the filling port of the filling barrel. A vacuuming frame is used to evacuate the air flowing in during the separation process between the sealing frame and the filling port of the filling barrel, achieving automatic vacuum conveying and filling. This improves the processing cost of the equipment and ensures that the filling barrel is in a vacuum state, thereby guaranteeing the quality of the additive.

Description

Technical Field

[0001] This invention relates to the field of battery cathode film-forming additive manufacturing technology, specifically a manufacturing process for battery cathode film-forming additives. Background Technology

[0002] Methyl methane disulfonate (MMDS) is a commonly used cathode film-forming additive in battery manufacturing. As a cathode film-forming additive, MMDS offers the following advantages: 1. It can improve the cycle performance of cathode materials, extending battery life and cycle life; 2. It can improve battery safety performance, reducing the probability of accidents under overcharging and over-discharging conditions; 3. By inhibiting the dissolution of metal ions in cathode materials, it helps reduce structural damage to cathode materials, improving battery reliability and stability; 4. It can optimize the electrochemical performance of batteries, improving cycle stability, power performance, and energy density. Currently, MMDS is generally produced through processes such as sulfonation, barium treatment, acidification, extraction and purification, crystallization and drying, analysis and detection, and packaging. Packaging is one of the important steps in the preparation of MMDS.

[0003] Traditional filling methods involve conveying the filling barrel to the bottom of the filling equipment, evacuating the barrel, introducing additives into it, and then sealing the barrel after filling. However, after separating the filling equipment from the filling barrel, a small amount of air can enter through the filling port, resulting in a small amount of air inside the barrel. This affects the storage environment of the additives, their shelf life, and even their quality. Furthermore, filling and sealing require different machines, both of which need to be driven, increasing the processing cost of the equipment. Summary of the Invention

[0004] In view of the above problems, embodiments of this application provide a manufacturing process for a battery cathode film-forming additive to solve the technical problems of reduced additive quality and storage time, and increased equipment processing costs in related technologies. To achieve the above objective, embodiments of this application provide the following technical solution.

[0005] The first aspect of this application provides a manufacturing process for a battery positive electrode film-forming additive, which uses a manufacturing apparatus for a battery positive electrode film-forming additive, including a fixing unit and a filling unit. The filling unit is disposed on the fixing unit for filling and sealing the filling cylinder. The specific method for manufacturing the battery positive electrode film-forming additive using the above-mentioned manufacturing apparatus is as follows:

[0006] S1. Sulfonation reaction: In the laboratory, dichloromethane is sulfonated with sodium sulfite under appropriate conditions to form sodium methane disulfonate.

[0007] S2, Bariumization reaction: Sodium methane disulfonate prepared by sulfonation reaction is reacted with dichloromethane in the laboratory to obtain barium methane disulfonate.

[0008] S3. Acidification treatment: Barium methanedisulfonate, prepared by barium ionization reaction in the laboratory, is reacted with sulfuric acid to obtain methyl methanedisulfonic acid.

[0009] S4: Esterification treatment: Methylmethane disulfonic acid, paraformaldehyde and phosphorus pentoxide are stirred at a suitable temperature for a certain time to obtain crude methylmethane disulfonic acid ester.

[0010] S5. Extraction and purification: The crude methylmethane disulfonate obtained by esterification is extracted and purified using dichloromethane.

[0011] S6. Crystallization and Drying: The extracted and purified product is subjected to crystallization and drying to obtain a clean and perfectly crystalline methylmethane disulfonate product.

[0012] S7. Analysis and Testing: The methyl methane disulfonate product after crystallization and drying is analyzed and tested to ensure that it meets the requirements.

[0013] S8. Conveying and Filling: The methyl methane disulfonate product, after passing the analysis and testing, is conveyed and filled through the conveying and filling equipment.

[0014] The fixed unit includes a traveling frame, a rotating frame fixedly installed on the upper end of the traveling frame, a T-shaped bracket fixedly installed on the upper end of the rotating frame, a clamping frame fixedly installed on the left side of the T-shaped bracket, a lifting frame provided in the middle of the left side of the T-shaped bracket, a filling unit provided at the lower end of the lifting frame, and a linkage frame fixedly installed at the lower right side of the T-shaped bracket, with the linkage frame and the lifting frame hinged together; the filling unit includes a filling frame, filling frames symmetrically arranged on the left and right sides of the lifting frame, a sealing frame provided on the filling frame, a sealing frame provided on the linkage frame, and a vacuuming frame provided on the sealing frame.

[0015] According to an embodiment of the present invention, the walking frame includes a circular plate, with universal wheels uniformly fixedly installed on the lower end of the circular plate, a threaded rod rotatably connected to the circular plate, a movable ring connected to the lower side of the threaded rod by a threaded connection, a rubber suction cup one uniformly fixedly installed on the lower end of the movable ring, the rubber suction cup one being interconnected, a control hole communicating with the rubber suction cup one is opened at the right end of the movable ring, a sealing plug is connected to the control hole by a threaded connection, and a telescopic rod is fixedly connected between the movable ring and the circular plate.

[0016] According to an embodiment of the present invention, the rotating frame includes a motor, the upper end of the circular plate is fixedly mounted with the motor via a motor base, the output shaft of the motor is fixedly mounted with a bevel gear via a coupling, the upper end of the circular plate is rotatably connected with a rotating circular plate, the lower end of the rotating circular plate is provided with an annular groove, and the annular groove is uniformly provided with bevel tooth grooves that cooperate with the bevel gear.

[0017] According to an embodiment of the present invention, the clamping frame includes a second motor. The second motor is fixedly mounted on the left end of the left side of the T-shaped bracket via a motor mount. A bidirectional screw is fixedly mounted on the output shaft of the second motor via a coupling. Moving square rods are symmetrically connected to the left and right sides of the bidirectional screws via threaded connections. The moving square rods are connected to the T-shaped bracket via a sliding fit. An arc-shaped block is fixedly mounted on the lower end of each moving square rod. Multiple rubber suction cups are fixedly mounted on the opposite ends of each arc-shaped block. The rubber suction cups are evenly arranged and connected to each other. An air pump is fixedly mounted on the front end of each arc-shaped block. The air pump is fixedly connected to the adjacent rubber suction cup via a connecting pipe.

[0018] According to an embodiment of the present invention, the lifting frame includes a rotating cylinder, an inverted king-shaped rotating cylinder is rotatably connected to the middle of the left side of the T-shaped bracket, a cylindrical gear one is fixedly installed in the middle of the bidirectional screw, a cylindrical gear two that meshes with the cylindrical gear one is fixedly installed in the middle of the rotating cylinder, traction ropes are symmetrically fixedly installed on the left and right sides of the rotating cylinder, and a fixing plate is fixedly installed at the end of the traction ropes, and a telescopic connecting rod one is fixedly connected between the fixing plate and the T-shaped bracket.

[0019] According to an embodiment of the present invention, the linkage frame includes a second connecting rod. The second connecting rod, which has a telescopic structure, is symmetrically fixedly installed on the lower right side of the T-shaped bracket. A rectangular plate is fixedly installed on the lower end of the second connecting rod. An inclined rod with a telescopic structure is hinged between the rectangular plate and the fixed plate. The middle part of the inclined rod is hinged to the vertical section of the T-shaped bracket.

[0020] According to an embodiment of the present invention, the filling rack includes a movable screw, and movable screws are symmetrically ball-hinged on the left and right sides of the fixed plate. A limiting plate is fixedly installed at the left end of the T-shaped bracket. The movable screw and the limiting plate are connected by a threaded connection. Inclined brackets are symmetrically fixedly installed at the lower end of the movable screw. A rubber plug is fixedly installed at the lower end of the inclined bracket. An annular sleeve is fixedly installed in the middle of the rubber plug. An annular column is connected to the annular sleeve by a sliding fit. An inverted L-shaped feed tube is fixedly installed at the front end of the annular column. An elastic conveying tube is connected between the front ends of the feed tubes. The conveying tube is fixedly connected to the filling machine.

[0021] According to an embodiment of the present invention, the sealing frame includes an air extraction pipe, an inverted L-shaped air extraction pipe is fixedly installed at the rear end of the inner ring column, and the rear ends of the air extraction pipes are connected to a flexible main pipe. A vacuum pump is fixedly installed at the rear end of the fixed plate, and the vacuum pump is fixedly connected to the main pipe. An electric telescopic rod is fixedly installed at the lower end of each moving screw, and the telescopic end of the electric telescopic rod is fixedly connected to the feeding pipe and the air extraction pipe on the same side.

[0022] According to an embodiment of the present invention, the enclosure includes a second movable screw, and two movable screws are symmetrically ball-hinged on the left and right sides of a rectangular plate. A second limiting plate is fixedly installed on the right end of a T-shaped bracket. The second movable screw and the second limiting plate are connected by a threaded connection. A circular cover plate is fixedly installed on the lower end of each movable screw. Rubber suction cups are uniformly fixedly installed on the arc-shaped inner wall of the circular cover plate. The three rubber suction cups on the same circular cover plate are connected. An air pump is fixedly installed on the circular cover plate. The air pump and the three rubber suction cups are fixedly connected by a connecting pipe. A rubber plug that cooperates with the circular cover plate is negatively adsorbed at the contact end of the three rubber suction cups.

[0023] According to an embodiment of the present invention, the vacuum frame includes a vacuum needle, a vacuum needle is fixedly installed at the lower end of a circular cover plate, the height of the vacuum needle extending out of the circular cover plate is greater than the thickness of the rubber stopper, a vacuum pump is fixedly installed at the rear end of the circular cover plate, and the vacuum pump and the vacuum needle are fixedly connected by a fixing tube.

[0024] As can be seen from the above technical solutions, the present invention has the following advantages:

[0025] 1. In this invention, the filling barrel is clamped by a clamping frame, the position of the traveling frame is determined, and the traveling frame is fixed. At this time, the lifting frame drives the filling frame to move downward, thereby driving the sealing frame to move downward. The sealing frame seals the filling port of the filling barrel and evacuates the filling barrel. Then, the filling frame fills the filling barrel. After filling, the filling frame moves upward. Driven by the lifting frame, the filling frame and the sealing frame separate from the filling barrel together. At this time, the rotating frame drives the T-shaped bracket to rotate, causing the sealing frame and the vacuum frame to move to... At the top of the filling barrel, the lifting frame moves the filling rack upwards. Driven by the linkage frame, the sealing rack and vacuum rack move downwards, sealing the sealing rack with the filling port of the filling barrel. The vacuum rack then evacuates the air that flows in during the separation of the sealing rack and the filling port after filling, thus achieving the purpose of automatic vacuum conveying and filling. This eliminates the need for a separate machine drive for sealing, reducing equipment processing costs, and ensures that the filling barrel is in a vacuum state, guaranteeing the storage time of the additive and thus ensuring its quality.

[0026] 2. In this invention, when the fixed plate moves downward under the drive of the traction rope, the moving screw moves downward. Under the limiting guidance of the limiting plate, the moving screw rotates while moving downward, thereby driving the inclined bracket and the rubber plug to move downward and rotate together. Through the cooperation of the annular sleeve and the annular column, the conveying pipe can move back and forth in the vertical plane. The rubber plug rotates while moving downward, thereby screwing into the filling port of the filling barrel to seal the filling port.

[0027] 3. In this invention, as the first rubber stopper moves downward, the suction pipe moves downward as well. After the first rubber stopper is screwed tightly onto the filling port of the filling barrel, the first vacuum pump performs a vacuum treatment inside the filling barrel. After the vacuum is completed, the filling machine delivers the additive to the conveying pipe, allowing it to enter the filling barrel. The electric telescopic rod drives the feeding pipe and the suction pipe to move upward together. When the opening of the feeding pipe and the opening of the first suction pipe move to the rubber stopper, the traction rope drives the fixing plate to move upward, thereby causing the first rubber stopper to be screwed out of the filling barrel, so that the second rubber stopper can be screwed into the filling barrel for sealing.

[0028] 4. In this invention, after the second rubber stopper is placed into the circular cover plate, the air between the second rubber suction cup and the second rubber stopper is discharged by the second air pump, so that the second rubber suction cup and the second rubber stopper are attracted to each other and the second rubber stopper is fixed. The fixing plate moves upward, so that the tilting rod tilts and drives the rectangular plate to move downward. Under the limiting guidance of the second limiting plate, the second moving screw rotates while moving downward, so that the second rubber stopper is screwed into the filling port of the filling barrel and the filling barrel is sealed.

[0029] 5. In this invention, when the second rubber stopper is placed into the circular cover plate, the vacuum needle penetrates the second rubber stopper. After the second rubber stopper is screwed into the filling port of the filling barrel, the vacuum pump 2 draws a vacuum into the filling barrel. Finally, the air pump 2 introduces air between the second rubber suction cup and the second rubber stopper. The second rubber suction cup and the second rubber stopper no longer attract each other. The traction rope drives the fixing plate to move downward, thereby driving the rectangular plate to move upward, and finally separating the second rubber stopper from the circular cover plate, ensuring that the second rubber stopper is sealed with the filling barrel.

[0030] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the manufacturing process of a battery cathode film-forming additive provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific embodiments. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 A schematic diagram of the workflow according to the present invention is shown.

[0033] Figure 2 A front-view stereoscopic structure diagram provided according to an embodiment of the present invention is shown.

[0034] Figure 3 A schematic diagram of the front sectional planar structure provided according to an embodiment of the present invention is shown.

[0035] Figure 4 A schematic diagram of the front view plane structure provided according to an embodiment of the present invention is shown.

[0036] Figure 5 It shows Figure 4 A sectional view along the AA direction.

[0037] Figure 6 It shows Figure 4 A sectional view along the BB direction.

[0038] Figure 7 It shows Figure 4 A cross-sectional view along the CC direction.

[0039] The above figures include the following reference numerals:

[0040] 1. Fixed unit; 2. Filling unit; 11. Walking frame; 111. Circular plate; 112. Casters; 113. Threaded rod; 114. Moving ring; 115. Rubber suction cup one; 116. Control hole; 117. Sealing plug; 118. Telescopic rod; 12. Rotating frame; 121. Motor one; 122. Bevel gear one; 123. Rotating circular plate; 124. Annular groove; 125. Bevel tooth groove; 13. T-shaped bracket; 14. Clamping frame; 141. Motor two; 142. Bidirectional screw; 143. Moving square rod; 144. Arc block; 145. Rubber suction cup two; 146. Air pump one; 147. Connecting pipe; 15. Lifting frame; 151. Rotating cylinder; 152. Cylindrical gear one; 153. Cylindrical gear two; 154. Traction rope; 155. Fixed Plate; 156. Connecting rod one; 16. Linkage frame; 161. Connecting rod two; 162. Rectangular plate; 163. Inclined rod; 21. Filling rack; 211. Moving screw one; 212. Limiting plate one; 213. Inclined bracket; 214. Rubber plug one; 215. Annular sleeve; 216. Ring column; 217. Feeding pipe; 218. Conveying pipe; 22. Sealing frame; 221. Air extraction pipe; 222. Main pipe; 223. Vacuum pump one; 224. Electric telescopic rod; 23. Sealing frame; 231. Moving screw two; 232. Limiting plate two; 233. Circular cover plate; 234. Rubber suction cup three; 235. Air pump two; 236. Connecting pipe; 237. Rubber plug two; 24. Vacuum frame; 241. Air extraction needle; 242. Vacuum pump two; 243. Fixed pipe. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] See Figure 1 A manufacturing process for a battery positive electrode film-forming additive is disclosed, which utilizes a manufacturing apparatus for the battery positive electrode film-forming additive, including a fixing unit 1 and a filling unit 2. The filling unit 2 is mounted on the fixing unit 1 and is used to fill and seal the filling cylinder. The specific method for manufacturing the battery positive electrode film-forming additive using the aforementioned manufacturing apparatus is as follows:

[0043] S1. Sulfonation reaction: In the laboratory, dichloromethane is sulfonated with sodium sulfite under appropriate conditions to form sodium methane disulfonate.

[0044] S2, Bariumization reaction: Sodium methane disulfonate prepared by sulfonation reaction is reacted with dichloromethane in the laboratory to obtain barium methane disulfonate.

[0045] S3. Acidification treatment: Barium methanedisulfonate, prepared by barium ionization reaction in the laboratory, is reacted with sulfuric acid to obtain methyl methanedisulfonic acid.

[0046] S4: Esterification treatment: Methyl methane disulfonic acid, paraformaldehyde and phosphorus pentoxide in a suitable mass ratio are stirred at a suitable temperature for a certain time to obtain crude methyl methane disulfonic acid ester, wherein phosphorus pentoxide is used as a dehydrating agent.

[0047] S5. Extraction and purification: The crude methylmethane disulfonate obtained by esterification is extracted and purified using dichloromethane.

[0048] S6. Crystallization and Drying: The extracted and purified product is subjected to crystallization and drying to obtain a clean and perfectly crystalline methylmethane disulfonate product.

[0049] S7. Analysis and Testing: The methyl methane disulfonate product after crystallization and drying is analyzed and tested to ensure that it meets the requirements.

[0050] S8. Conveying and Filling: The methyl methane disulfonate product, after passing the analysis and testing, is conveyed and filled through the conveying and filling equipment.

[0051] See Figure 2The fixed unit 1 includes a walking frame 11, a rotating frame 12 fixedly mounted on the upper end of the walking frame 11, a T-shaped bracket 13 fixedly mounted on the upper end of the rotating frame 12, a clamping frame 14 fixedly mounted on the left side of the T-shaped bracket 13, a lifting frame 15 arranged in the middle of the left side of the T-shaped bracket 13, a filling unit 2 arranged at the lower end of the lifting frame 15, and a linkage frame 16 fixedly mounted on the lower right side of the T-shaped bracket 13. The linkage frame 16 is hinged to the lifting frame 15. The filling unit 2 includes a filling frame 21, with filling frames 21 symmetrically arranged on the left and right sides of the lifting frame 15. A sealing frame 22 is arranged on the filling frame 21, a sealing frame 23 is arranged on the linkage frame 16, and a vacuuming frame 24 is arranged on the sealing frame 23. First, the walking frame 11 is moved to the right side of the filling barrel, with the filling port of the filling barrel arranged left and right. At this time, the filling barrel is clamped by the clamping frame 14 to determine the position of the walking frame 11. The walking frame 11 is then... The filling rack 21 is fixed in place. At this time, the lifting frame 15 drives the filling rack 21 to move downward, thereby driving the sealing frame 22 to move downward. The sealing frame 22 seals the filling port of the filling barrel and evacuates the filling barrel. Then, the filling rack 21 fills the filling barrel. After filling, the filling rack 21 moves upward. Driven by the lifting frame 15, the filling rack 21 and the sealing frame 22 separate from the filling barrel. At this time, the rotating frame 12 drives the T-shaped bracket 13 to rotate, so that the sealing frame 22 and the vacuum frame 24 move to the upper end of the filling barrel. At this time, the lifting frame 15 drives the filling rack 21 to move upward. Driven by the linkage frame 16, the sealing frame 22 and the vacuum frame 24 move downward, sealing the filling port of the filling barrel. The vacuum frame 24 evacuates the air that flows in during the process of separating the sealing frame 22 from the filling port of the filling barrel after filling, thus completing the purpose of automatic vacuum conveying and filling.

[0052] See Figure 3 The walking frame 11 includes a circular plate 111. Universal wheels 112 are evenly fixedly installed on the lower end of the circular plate 111. A threaded rod 113 is rotatably connected to the circular plate 111. A movable ring 114 is threadedly connected to the lower side of the threaded rod 113. Rubber suction cups 115 are evenly fixedly installed on the lower end of the movable ring 114 and are interconnected. A control hole 116 communicating with the rubber suction cups 115 is opened at the right end of the movable ring 114. A sealing device is threadedly connected inside the control hole 116. A telescopic rod 118 is fixedly connected between the blocking 117, the moving ring 114, and the circular plate 111. By rotating the threaded rod 113, the moving ring 114 is driven to move downward, so that the rubber suction cup 115 is pressed tightly against the ground, and the air between the rubber suction cup 115 and the ground is discharged, so that the rubber suction cup 115 is attracted to the ground. The telescopic rod 118 guides and limits the moving ring 114. When it is necessary to move the circular plate 111, the blocking 117 is opened to allow air to enter the rubber suction cup 115 and the ground.

[0053] Continue reading Figure 3 The rotating frame 12 includes a motor 121. The motor 121 is fixedly mounted on the upper end of the circular plate 111 via a motor mount. The output shaft of the motor 121 is fixedly mounted with a bevel gear 122 via a coupling. A rotating circular plate 123 is rotatably connected to the upper end of the circular plate 111. An annular groove 124 is provided at the lower end of the rotating circular plate 123. The annular groove 124 is evenly provided with bevel tooth grooves 125 that cooperate with the bevel gear 122. The motor 121 drives the bevel gear 122 to rotate, and with the cooperation of the bevel tooth grooves 125, it drives the rotating circular plate 123 to rotate.

[0054] Please refer to again Figure 3 The clamping frame 14 includes a second motor 141. The second motor 141 is fixedly mounted on the left end of the left side of the T-shaped bracket 13 via a motor mount. A bidirectional screw 142 is fixedly mounted on the output shaft of the second motor 141 via a coupling. Moving square rods 143 are symmetrically connected to the left and right sides of the bidirectional screw 142 via threaded connections. The moving square rods 143 are connected to the T-shaped bracket 13 via a sliding fit. Arc-shaped blocks 144 are fixedly mounted on the lower ends of each moving square rod 143. Multiple rubber suction cups 145 are fixedly mounted on opposite ends of each arc-shaped block 144. 45 are evenly arranged, and the rubber suction cups 145 are connected to each other. An air pump 146 is fixedly installed at the front end of the arc block 144. The air pump 146 is fixedly connected to the adjacent rubber suction cup 145 through a connecting pipe 147. The motor 141 drives the bidirectional screw 142 to rotate, thereby driving the moving square rod 143 to move towards each other and the arc blocks 144 to move towards each other, so that the rubber suction cup 145 is in close contact with the outer wall of the filling barrel. The air pump 146 discharges the air between the rubber suction cup 145 and the outer wall of the filling barrel, so that the rubber suction cup 145 is attracted to the outer wall of the filling barrel.

[0055] See Figure 3 and Figure 5 The lifting frame 15 includes a rotating cylinder 151. An inverted king-shaped rotating cylinder 151 is rotatably connected to the middle left side of the T-shaped bracket 13. A cylindrical gear 152 is fixedly installed in the middle of the bidirectional screw 142. A cylindrical gear 153 meshing with the cylindrical gear 152 is fixedly installed in the middle of the rotating cylinder 151. Traction ropes 154 are symmetrically fixedly installed on the left and right sides of the rotating cylinder 151. A fixing plate 155 is fixedly installed at the end of each traction rope 154. A telescopic connecting rod 156 is fixedly connected between the fixing plate 155 and the T-shaped bracket 13. The cylindrical gear 152 on the bidirectional screw 142 drives the cylindrical gear 153 to rotate, thereby driving the rotating cylinder 151 to rotate, controlling the length of the traction rope 154 extending out of the T-shaped bracket 13. The connecting rod 156 guides the fixing plate 155.

[0056] See Figure 3The linkage frame 16 includes a second connecting rod 161. The second connecting rod 161 with a telescopic structure is symmetrically fixedly installed on the lower right side of the T-shaped bracket 13. A rectangular plate 162 is fixedly installed on the lower end of the second connecting rod 161. A telescopic inclined rod 163 is hinged between the rectangular plate 162 and the fixed plate 155. The middle part of the inclined rod 163 is hinged to the vertical section of the T-shaped bracket 13. When the fixed plate 155 moves downward, the inclined rod 163 is rotated under force, thereby driving the rectangular plate 162 to move upward. The second connecting rod 161 limits the rectangular plate 162. Conversely, the rectangular plate 162 moves upward.

[0057] See Figure 3 , Figure 5 and Figure 6 The filling rack 21 includes a movable screw 211. The movable screw 211 is symmetrically ball-hinged to the left and right sides of the fixed plate 155. A limiting plate 212 is fixedly installed at the left end of the T-shaped bracket 13. The movable screw 211 and the limiting plate 212 are connected by a threaded connection. Inclined brackets 213 are symmetrically fixedly installed at the lower ends of the movable screw 211. A rubber plug 214 is fixedly installed at the lower ends of the inclined brackets 213. An annular sleeve 215 is fixedly installed in the middle of the rubber plug 214. A ring column 216 is slidably connected inside the annular sleeve 215. An inverted L-shaped feed pipe 217 is fixedly installed at the front end of the ring column 216. The front ends of the feeding pipes 217 are connected to a flexible conveying pipe 218, which is fixedly connected to the filling machine. When the fixed plate 155 moves downward under the drive of the traction rope 154, the moving screw 211 moves downward. Under the limiting guidance of the limiting plate 212, the moving screw 211 rotates while moving downward, thereby driving the inclined bracket 213 and the rubber plug 214 to move downward and rotate together. Through the cooperation of the annular sleeve 215 and the ring column 216, the conveying pipe can move back and forth in the vertical plane. The rubber plug 214 rotates while moving downward, thereby screwing into the filling port of the filling barrel to seal the filling port.

[0058] Continue reading Figure 3 , Figure 5 and Figure 6The sealing frame 22 includes an air extraction pipe 221. An inverted L-shaped air extraction pipe 221 is fixedly installed at the rear end of the annular column 216. The rear ends of the air extraction pipes 221 are connected to a flexible main pipe 222. A vacuum pump 223 is fixedly installed at the rear end of the fixing plate 155. The vacuum pump 223 is fixedly connected to the main pipe 222. An electric telescopic rod 224 is fixedly installed at the lower end of each moving screw 211. The telescopic end of the electric telescopic rod 224 is fixedly connected to the discharge pipe 217 on the same side and the air extraction pipe 221. As the rubber stopper 214 moves downward, the air extraction pipe... 221 moves downwards. After the rubber stopper 214 is tightened with the filling port of the filling barrel, the vacuum pump 223 performs vacuuming treatment inside the filling barrel. After the vacuuming is completed, the filling machine delivers the additive to the conveying pipe 218, allowing it to enter the filling barrel. The electric telescopic rod 224 drives the feeding pipe 217 and the suction pipe 221 to move upwards together. When the opening of the feeding pipe 217 and the opening of the suction pipe 221 reach the rubber stopper 214, the traction rope 154 drives the fixing plate 155 to move upwards, thereby causing the rubber stopper 214 to rotate out of the filling barrel.

[0059] See Figure 3 and Figure 7 The enclosed frame 23 includes a second movable screw 231. The second movable screw 231 is symmetrically ball-hinged to the left and right sides of the rectangular plate 162. A limit plate 232 is fixedly installed at the right end of the T-shaped bracket 13. The second movable screw 231 and the limit plate 232 are connected by a threaded connection. A circular cover plate 233 is fixedly installed at the lower end of each second movable screw 231. Rubber suction cups 234 are uniformly fixedly installed on the arc-shaped inner wall of the circular cover plate 233. The rubber suction cups 234 on the same circular cover plate 233 are interconnected. An air pump 235 is fixedly installed on the circular cover plate 233. The air pump 235 and the rubber suction cups 234 are fixedly connected by a connecting pipe 236. The rubber suction cup 234 has a negative suction at its contact end, which is compatible with the circular cover plate 233. After the rubber stopper 237 is placed into the circular cover plate 233, the air between the rubber suction cup 245 and the rubber stopper 237 is discharged by the air pump 235, so that the rubber suction cup 245 and the rubber stopper 237 are attracted to each other and the rubber stopper 237 is fixed. The fixing plate 155 moves upward, thereby tilting the tilting rod 163 and driving the rectangular plate 162 to move downward. Under the limiting guide of the limiting plate 232, the moving screw 231 moves downward and rotates at the same time, so that the rubber stopper 237 is screwed into the filling port of the filling barrel and the filling barrel is sealed.

[0060] Continue reading Figure 3 and Figure 7The vacuum frame 24 includes a vacuum needle 241. A vacuum needle 241 is fixedly installed at the lower end of the circular cover plate 233. The height of the vacuum needle 241 extending out of the circular cover plate 233 is greater than the thickness of the rubber stopper 237. A vacuum pump 242 is fixedly installed at the rear end of the circular cover plate 233. The vacuum pump 242 and the vacuum needle 241 are fixedly connected by a fixing tube 243. When the rubber stopper 237 is placed into the circular cover plate 233, the vacuum needle 241 penetrates the rubber stopper 237. After the rubber stopper 237 is screwed into the filling port of the filling barrel, the vacuum pump 242 draws a vacuum into the filling barrel. Finally, the air pump 235 introduces air between the rubber suction cup 145 and the rubber stopper 237. The rubber suction cup 145 and the rubber stopper 237 no longer attract each other. The traction rope 154 drives the fixing plate 155 to move downward, thereby driving the rectangular plate 162 to move upward, and finally separating the rubber stopper 237 from the circular cover plate 233.

Claims

1. A battery cathode film forming additive canning apparatus characterized by It includes a fixing unit (1) and a filling unit (2), the filling unit (2) being mounted on the fixing unit (1) for filling and sealing the filling cylinder; The fixed unit (1) includes a walking frame (11), a rotating frame (12) is fixedly installed on the upper end of the walking frame (11), a T-shaped bracket (13) is fixedly installed on the upper end of the rotating frame (12), a clamping frame (14) is fixedly installed on the left side of the T-shaped bracket (13), a lifting frame (15) is provided in the middle of the left side of the T-shaped bracket (13), a filling unit (2) is provided at the lower end of the lifting frame (15), and a linkage frame (16) is fixedly installed at the lower right side of the T-shaped bracket (13). The linkage frame (16) and the lifting frame (15) are hinged together. The filling unit (2) includes a filling rack (21), and the lifting frame (15) is symmetrically provided with filling racks (21) on the left and right sides. A sealing frame (22) is provided on the filling rack (21), a sealing frame (23) is provided on the linkage frame (16), and a vacuum frame (24) is provided on the sealing frame (23). The linkage frame (16) includes a second connecting rod (161). The lower right side of the T-shaped bracket (13) is symmetrically fixed with a telescopic connecting rod (161). The lower ends of the second connecting rod (161) are fixed with a rectangular plate (162). The rectangular plate (162) and the fixed plate (155) are hinged with a telescopic inclined rod (163). The middle part of the inclined rod (163) is hinged to the vertical section of the T-shaped bracket (13). The enclosed frame (23) includes a second movable screw (231). The second movable screw (231) is symmetrically ball-hinged on the left and right sides of the rectangular plate (162). A limit plate (232) is fixedly installed on the right end of the T-shaped bracket (13). The second movable screw (231) and the limit plate (232) are connected by a threaded connection. A circular cover plate (233) is fixedly installed on the lower end of each of the second movable screws (231). Rubber suction cups three (234) are uniformly fixedly installed on the arc-shaped inner wall. The rubber suction cups three (234) on the same circular cover plate (233) are connected. An air pump two (235) is fixedly installed on the circular cover plate (233). The air pump two (235) and the rubber suction cup three (234) are fixedly connected through a connecting pipe (236). The contact end of the rubber suction cup three (234) is negatively adsorbed with a rubber plug two (237) that matches the circular cover plate (233). The vacuum frame (24) includes a vacuum needle (241). The vacuum needle (241) is fixedly installed at the lower end of the circular cover plate (233). The height of the vacuum needle (241) extending out of the circular cover plate (233) is greater than the thickness of the second rubber stopper (237). The second vacuum pump (242) is fixedly installed at the rear end of the circular cover plate (233). The second vacuum pump (242) and the vacuum needle (241) are fixedly connected by a fixing tube (243).

2. The filling equipment for a battery positive electrode film-forming additive according to claim 1, characterized in that: The walking frame (11) includes a circular plate (111), with universal wheels (112) evenly fixedly installed at the lower end of the circular plate (111). A threaded rod (113) is rotatably connected to the circular plate (111). A movable ring (114) is connected to the lower side of the threaded rod (113) by a threaded connection. A rubber suction cup (115) is evenly fixedly installed at the lower end of the movable ring (114). The rubber suction cups (115) are connected to each other. A control hole (116) communicating with the rubber suction cup (115) is opened at the right end of the movable ring (114). A sealing plug (117) is connected to the control hole (116) by a threaded connection. A telescopic rod (118) is fixedly connected between the movable ring (114) and the circular plate (111).

3. The filling equipment for a battery positive electrode film-forming additive according to claim 1, characterized in that: The rotating frame (12) includes a motor (121). The upper end of the circular plate (111) is fixedly mounted with the motor (121) via a motor base. The output shaft of the motor (121) is fixedly mounted with a bevel gear (122) via a coupling. The upper end of the circular plate (111) is rotatably connected to a rotating circular plate (123). The lower end of the rotating circular plate (123) is provided with an annular groove (124). The annular groove (124) is evenly provided with bevel tooth grooves (125) that cooperate with the bevel gear (122).

4. The filling equipment for a battery positive electrode film-forming additive according to claim 1, characterized in that: The clamping frame (14) includes a second motor (141). The second motor (141) is fixedly installed on the left side of the T-shaped bracket (13) via a motor seat. The output shaft of the second motor (141) is fixedly installed with a bidirectional screw (142) via a coupling. The left and right sides of the bidirectional screw (142) are symmetrically connected with movable square rods (143) by threaded connection. The movable square rods (143) are connected to the T-shaped bracket (13) by sliding fit. The lower end of each movable square rod (143) is fixedly installed with an arc-shaped block (144). Multiple rubber suction cups (145) are fixedly installed on opposite ends of each arc-shaped block (144). The rubber suction cups (145) are evenly arranged and connected to each other. An air pump (146) is fixedly installed at the front end of the arc-shaped block (144). The air pump (146) is fixedly connected to the adjacent rubber suction cups (145) via a connecting pipe (147).

5. The filling equipment for a battery positive electrode film-forming additive according to claim 1, characterized in that: The lifting frame (15) includes a rotating cylinder (151), and an inverted king-shaped rotating cylinder (151) is rotatably connected to the middle of the left side of the T-shaped bracket (13). A cylindrical gear (152) is fixedly installed in the middle of the bidirectional screw (142), and a cylindrical gear (153) that meshes with the cylindrical gear (152) is fixedly installed in the middle of the rotating cylinder (151). Traction ropes (154) are symmetrically fixedly installed on the left and right sides of the rotating cylinder (151). A fixing plate (155) is fixedly installed at the end of the traction ropes (154). A telescopic connecting rod (156) is fixedly connected between the fixing plate (155) and the T-shaped bracket (13).

6. The filling equipment for a battery positive electrode film-forming additive according to claim 5, characterized in that: The filling rack (21) includes a movable screw (211), and the movable screw (211) is symmetrically ball-hinged on the left and right sides of the fixed plate (155). A limiting plate (212) is fixedly installed on the left end of the T-shaped bracket (13). The movable screw (211) and the limiting plate (212) are connected by a threaded connection. An inclined bracket (213) is symmetrically fixedly installed on the lower end of the movable screw (211). A rubber plug (214) is fixedly installed at the lower end. An annular sleeve (215) is fixedly installed in the middle of the rubber plug (214). An annular column (216) is connected in a sliding fit inside the annular sleeve (215). An inverted L-shaped feed pipe (217) is fixedly installed at the front end inside the annular column (216). An elastic conveying pipe (218) is connected between the front ends of the feed pipe (217). The conveying pipe (218) is fixedly connected to the filling machine.

7. The filling equipment for a battery positive electrode film-forming additive according to claim 6, characterized in that: The sealing frame (22) includes an air extraction pipe (221). An inverted L-shaped air extraction pipe (221) is fixedly installed at the rear end of the ring column (216). The rear ends of the air extraction pipes (221) are connected to a flexible main pipe (222). A vacuum pump (223) is fixedly installed at the rear end of the fixing plate (155). The vacuum pump (223) is fixedly connected to the main pipe (222). An electric telescopic rod (224) is fixedly installed at the lower end of the moving screw (211). The telescopic end of the electric telescopic rod (224) is fixedly connected to the discharge pipe (217) and the air extraction pipe (221) on the same side.

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