Mesoporous silicon carbon negative electrode material carbon coating device

Abstract

The utility model discloses a mesoporous type silicon carbon negative electrode material carbon coating device which comprises a coating mechanism and an electric telescopic rod installed in the coating mechanism, a feeding mechanism is arranged on one side of the top of the coating mechanism, an extrusion plate is arranged in the feeding mechanism, the coating mechanism comprises a coating base, and the coating base is connected with the electric telescopic rod. A wrapping box is fixedly installed at the top of the wrapping base, a wrapping motor is fixedly installed at the center of the top of the wrapping box, the output end of the wrapping motor is fixedly connected with a wrapping rotating shaft, rotating grooves are symmetrically formed in the two sides of the interior of the wrapping rotating shaft, and electric telescopic rods are symmetrically installed on the inner side of the top of the wrapping rotating shaft. An electric telescopic rod is used for driving a meshing rack to ascend and descend in a rotating groove, the characteristic that the meshing rack is in meshing connection with a rotating gear is utilized, the rotating gear drives a wrapping rotating rod to rotate, the wrapping rotating rod is moved out of the interior of the rotating groove, and rotation of the wrapping rotating rod can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon negative electrode material production, in particular to a carbon coating device for a mesoporous silicon-carbon negative electrode material. Background Art

[0002] Currently, the lithium battery carbon coating device on the market introduces nitrogen to replace the air in the reactor during silicon-carbon coating. However, the speed at which nitrogen replaces the air in the reactor is slow, and the air in the reactor cannot be discharged in time. Silicon is easily oxidized at high temperatures, the efficiency of silicon-carbon coating is low, and the coating effect is incomplete. At the same time, the gas released after the solvent tetrahydrofuran of the reaction precursor PVC evaporates is toxic. The existing recovery device is costly and has poor safety, which is not conducive to safe production.

[0003] Publication No. CN 219744768 U discloses a carbon coating device for mesoporous silicon-carbon anode materials, comprising a reactor body, a rotating motor, a rotating rod, and a stirring rod. A vacuum mechanism is provided inside the reactor body, which, through the action of a slide rail, can drive two vacuum auxiliary pipes to move up and down, thereby rapidly extracting gas from the reactor body and effectively discharging gas from different flow layers, thereby preventing gas from remaining inside the reactor body and diluting subsequently added gas, thereby improving processing quality. However, this patent still has the following problems in actual use:

[0004] The travel of the slide rail of the carbon coating device for mesoporous silicon-carbon anode materials is limited by the structure and cannot cover the entire height range in the reactor. As a result, the air in some flow layers is difficult to be completely extracted, which easily leads to gas residue.

[0005] During the ventilation process, no one-way air intake structure is set up, and the newly injected gas is easily mixed with the residual air, and a directional airflow cannot be formed, resulting in low air replacement efficiency and affecting the integrity of the silicon-carbon coating.

[0006] A mesoporous silicon-carbon negative electrode material carbon coating device is proposed to solve the above-mentioned problems. Utility Model Content

[0007] The purpose of the present utility model is to provide a carbon coating device for mesoporous silicon-carbon negative electrode materials, so as to solve the problem that the carbon coating device for mesoporous silicon-carbon negative electrode materials proposed in the above background technology can drive the two exhaust sub-pipes to move up and down through the action of the slide rail to quickly extract the gas inside the reactor body, but when the air is extracted, new gas cannot enter and air circulation cannot be generated, thereby affecting the extraction of air. At the same time, the distance of the slide rail is limited, and the extraction of air from different flow layers cannot be achieved, thereby affecting the air extraction effect.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a carbon coating device for a mesoporous silicon-carbon negative electrode material, comprising a coating mechanism and an electric telescopic rod installed inside the coating mechanism;

[0009] A feeding mechanism is provided on one side of the top of the covering mechanism, and an extrusion plate is provided inside the feeding mechanism;

[0010] Also includes:

[0011] The covering mechanism includes a covering base, a covering box is fixedly installed on the top of the covering base, and a covering motor is fixedly installed at the top center of the covering box;

[0012] The output end of the coated motor is fixedly connected to a coated rotating shaft, and rotating grooves are symmetrically opened on both sides of the inner side of the coated rotating shaft;

[0013] Among them, the electric telescopic rods are symmetrically installed on the inner side of the top of the covered rotating shaft, and the output ends of the two electric telescopic rods are fixedly connected with meshing racks. One side of the meshing racks is meshed with several rotating gears, and the outer side of the rotating gear is fixedly installed with a covered rotating rod.

[0014] Preferably, a lifting motor is fixedly installed on one side of the top of the covering box, the output end of the lifting motor is fixedly connected to a lifting threaded rod, the outer side of the lifting threaded rod is threadedly connected to a lifting threaded sleeve, the outer side of the lifting threaded sleeve is fixedly installed with a lifting plate, the side of the lifting plate away from the lifting threaded sleeve is fixedly installed with a lifting sliding sleeve, and the interior of the lifting sliding sleeve is slidably connected to the lifting sliding rod.

[0015] Preferably, an air intake pipe is fixedly installed on one side of the bottom of the covering box, an air intake bracket is fixedly installed on the side of the air intake pipe away from the covering box, an air intake spring is fixedly installed on the inner side of the air intake bracket, a sealing plug is fixedly installed on the end of the air intake spring, and the sealing plug is snap-connected to the covering box.

[0016] Preferably, a discharge valve is fixedly installed on the front bottom of the covering base, and an exhaust pipe is fixedly installed on the top of the covering base away from the covering motor and the lifting motor.

[0017] Preferably, the feeding mechanism includes a feeding box, a feeding plug is threadedly connected to one side of the top of the feeding box, a fixed bracket is fixedly installed on the top of the feeding box, an extrusion motor is fixedly installed on one side of the fixed bracket, and an extrusion bidirectional threaded rod is fixedly connected to the output end of the extrusion motor.

[0018] Preferably, both ends of the extruded bidirectional threaded rod are symmetrically threadedly connected with extruded threaded sleeves, the bottom of the extruded threaded sleeve is rotatably connected with an extruded rotating rod, the two extruded rotating rods are rotatably connected to the extrusion plate, and the extrusion plate is slidably connected to the feed box.

[0019] Preferably, a motor cover is fixedly installed on one side of the bottom of the feed box, an opening and closing motor is fixedly installed on one side of the inner side of the motor cover, the output end of the opening and closing motor is fixedly connected to a sprocket transmission assembly, one side of the sprocket transmission assembly is symmetrically connected to an opening and closing bidirectional threaded rod, the outer sides of the two opening and closing bidirectional threaded rods are symmetrically threaded with opening and closing threaded sleeves, an opening and closing baffle is fixedly installed on the bottom of the opening and closing threaded sleeve on one side, the opening and closing baffle is slidably connected to the feed box, a material guide pipe is fixedly installed on the bottom of the feed box, and the material guide pipe is fixedly installed on one side of the top of the coating box.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the carbon coating device for mesoporous silicon-carbon negative electrode materials utilizes an electric telescopic rod to drive the meshing rack to move up and down inside the rotating groove, utilizes the meshing connection between the meshing rack and the rotating gear, so that the rotating gear drives the coating rotating rod to rotate, and the coating rotating rod is pulled out of the rotating groove to realize the rotation of the coating rotating rod, utilizes the extrusion motor to drive the extrusion bidirectional threaded rod to rotate, so that the extrusion threaded sleeve drives the extrusion rotating rod to rotate, and at the same time, the extrusion rotating rod can drive the extrusion plate to move inside the feed box, so that the silicon-carbon raw material can be pressed into the coating box. The specific contents are as follows:

[0021] The camming mechanism is configured to not only utilize the camming motor to drive the camming shaft to rotate, but also utilize the electric telescopic rod to drive the meshing rack to lift and move inside the rotating groove, and utilize the meshing connection between the meshing rack and the rotating gear to enable the rotating gear to drive the camming rotating rod to rotate, and lead the camming rotating rod out of the rotating groove, so as to realize the rotation of the camming rotating rod, thereby stirring the carbon material, and the lifting motor drives the lifting threaded rod to rotate, so that the lifting threaded sleeve drives the lifting plate to move inside the coating box, so as to drive the air inside the coating box upward, and at the same time, cooperate with the exhaust pipe to extract the air inside the coating box from the exhaust pipe, and introduce nitrogen through the air inlet pipe, so as to facilitate air replacement and improve the efficiency of silicon-carbon coating, and utilize the characteristic of the sealing plug being connected with the coating box to realize the sealing of the air inlet pipe, so that the air inlet pipe can only take in air but not out air, which is convenient for the introduction of nitrogen;

[0022] 2. By setting up the feeding mechanism, not only can the extrusion motor be used to drive the extrusion bidirectional threaded rod to rotate, so that the extrusion threaded sleeve drives the extrusion rotating rod to rotate, but the extrusion rotating rod can also drive the extrusion plate to move inside the feed box, and can press the silicon-carbon raw material into the coating box. At the same time, the sprocket transmission assembly and the opening and closing bidirectional threaded rod are driven to rotate by the opening and closing motor, so that the opening and closing threaded sleeve drives the opening and closing baffle to move relative to each other, and the speed of silicon-carbon raw material discharge can be controlled by adjusting the size of the opening at the bottom of the feed box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the covering mechanism in the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the covered shaft section in the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the air intake pipe cross section in the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional cross-section of the feeding mechanism in the present invention;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the opening and closing baffle in the utility model.

[0029] In the figure: 1. Covering mechanism; 101. Covering base; 102. Covering box; 103. Covering motor; 104. Covering rotating shaft; 105. Rotating groove; 106. Electric telescopic rod; 107. Meshing rack; 108. Rotating gear; 109. Covering rotating rod; 110. Lifting motor; 111. Lifting threaded rod; 112. Lifting threaded sleeve; 113. Lifting plate; 114. Lifting sliding sleeve; 115. Lifting sliding rod; 116. Intake pipe; 117. Intake bracket; 118. Intake spring ;119. Sealing plug;120. Discharge valve;121. Exhaust pipe;2. Feeding mechanism;201. Feeding box;202. Feeding plug;203. Fixed bracket;204. Extrusion motor;205. Extrusion bidirectional threaded rod;206. Extrusion threaded sleeve;207. Extrusion rotating rod;208. Extrusion plate;209. Motor cover;210. Opening and closing motor;211. Sprocket transmission assembly;212. Opening and closing bidirectional threaded rod;213. Opening and closing threaded sleeve;214. Opening and closing baffle;215. Material guide pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1-6The utility model provides a technical solution: a carbon coating device for mesoporous silicon-carbon negative electrode materials, comprising a coating mechanism 1, and an electric telescopic rod 106 installed inside the coating mechanism 1, a feeding mechanism 2 is provided on one side of the top of the coating mechanism 1, and an extrusion plate 208 is provided inside the feeding mechanism 2, the coating mechanism 1 comprises a coating base 101, a coating box 102 is fixedly installed on the top of the coating base 101, a coating motor 103 is fixedly installed at the top center position of the coating box 102, wherein the output end of the coating motor 103 is fixedly connected to the coating shaft 104, and the inner sides of the coating shaft 104 are symmetrically provided with rotating grooves 105, wherein the electric telescopic rods 106 are symmetrically installed on the top inner side of the coating shaft 104, and the two electric telescopic rods 1 The output end of 06 is fixedly connected with a meshing rack 107, and one side of the meshing rack 107 is meshed with a number of rotating gears 108. The outer side of the rotating gear 108 is fixedly installed with a covering rotating rod 109. The top side of the covering box 102 is fixedly installed with a lifting motor 110. The output end of the lifting motor 110 is fixedly connected with a lifting threaded rod 111. The outer side of the lifting threaded rod 111 is threadedly connected with a lifting threaded sleeve 112. The outer side of the lifting threaded sleeve 112 is fixedly installed with a lifting plate 113. The side of the lifting plate 113 away from the lifting threaded sleeve 112 is fixedly installed with a lifting sliding sleeve 114. The interior of the lifting sliding sleeve 114 is slidably connected with a lifting sliding rod 115. The bottom side of the covering box 102 is fixedly installed with an air inlet pipe 116. The air inlet pipe An air intake bracket 117 is fixedly installed on the side of 116 away from the coating box 102, and an air intake spring 118 is fixedly installed on the inner side of the air intake bracket 117. A sealing plug 119 is fixedly installed on the end of the air intake spring 118, and the sealing plug 119 is engaged with the coating box 102. A discharge valve 120 is fixedly installed on the front of the bottom of the coating base 101, and an air extraction pipe 121 is fixedly installed on the side of the top of the coating base 101 away from the coating motor 103 and the lifting motor 110. By setting up the coating mechanism 1, not only can the coating motor 103 be used to drive the coating shaft 104 to rotate, the electric telescopic rod 106 is used to drive the meshing rack 107 to move up and down inside the rotating groove 105, but also the meshing connection between the meshing rack 107 and the rotating gear 108 is used. The rotating gear 108 drives the coating rotating rod 109 to rotate, and the coating rotating rod 109 is moved out of the interior of the rotating groove 105, so that the coating rotating rod 109 can be rotated, thereby stirring the carbon material. The lifting motor 110 drives the lifting threaded rod 111 to rotate, so that the lifting threaded sleeve 112 drives the lifting plate 113 to move inside the coating box 102, and the air inside the coating box 102 can be driven upward. At the same time, the air inside the coating box 102 can be extracted from the exhaust pipe 121 in conjunction with the exhaust pipe 121, and nitrogen is introduced through the air inlet pipe 116, which can facilitate air replacement and improve the efficiency of silicon-carbon coating. The sealing plug 119 is connected to the coating box 102 by snapping, so that the air inlet pipe 116 can be closed.The air inlet pipe 116 can only take in air but not take out air, which is convenient for nitrogen to enter.

[0032] The feeding mechanism 2 includes a feeding box 201, a feeding plug 202 is threadedly connected to one side of the top of the feeding box 201, a fixed bracket 203 is fixedly installed on the top of the feeding box 201, an extrusion motor 204 is fixedly installed on one side of the fixed bracket 203, an output end of the extrusion motor 204 is fixedly connected to an extrusion bidirectional threaded rod 205, two ends of the extrusion bidirectional threaded rod 205 are symmetrically threaded with an extrusion threaded sleeve 206, the bottom of the extrusion threaded sleeve 206 is rotatably connected to an extrusion rotating rod 207, two extrusion rotating rods 207 are rotatably connected to the extrusion plate 208, the extrusion plate 208 is slidably connected to the feeding box 201, a motor cover 209 is fixedly installed on one side of the bottom of the feeding box 201, an opening and closing motor 210 is fixedly installed on one side of the motor cover 209, the output end of the opening and closing motor 210 is fixedly connected to a sprocket transmission assembly 211, one side of the sprocket transmission assembly 211 is symmetrically connected to an opening and closing bidirectional threaded rod 212, two opening and closing bidirectional threaded rods The outer side of 212 is symmetrically threadedly connected with an opening and closing threaded sleeve 213, and an opening and closing baffle 214 is fixedly installed at the bottom of one side of the opening and closing threaded sleeve 213, and the opening and closing baffle 214 is slidably connected to the feed box 201. The bottom of the feed box 201 is fixedly installed with a guide pipe 215, and the guide pipe 215 is fixedly installed on one side of the top of the coating box 102. By setting the feeding mechanism 2, not only can the extrusion motor 204 drive the extrusion bidirectional threaded rod 205 to rotate, so that the extrusion threaded sleeve 206 drives the extrusion rotating rod 207 to rotate, but the extrusion rotating rod 207 can drive the extrusion plate 208 to move inside the feed box 201, so as to press the silicon-carbon raw material into the coating box 102. At the same time, the sprocket transmission assembly 211 and the opening and closing bidirectional threaded rod 212 are driven to rotate by the opening and closing motor 210, so that the opening and closing threaded sleeve 213 drives the opening and closing baffle 214 to move relatively, and the speed of the silicon-carbon raw material discharge can be controlled by adjusting the size of the opening at the bottom of the feed box 201.

[0033] Working principle: Before using this mesoporous silicon-carbon negative electrode material carbon coating device, it is necessary to first check the overall condition of the device to ensure that it can work normally. Figure 1 - Figure 6As shown, first, the lifting threaded rod 111 is driven to rotate by the lifting motor 110, so that the lifting threaded sleeve 112 drives the lifting plate 113 to move inside the coating box 102, which can drive the air inside the coating box 102 upward, and at the same time, cooperate with the exhaust pipe 121 to extract the air inside the coating box 102 from the exhaust pipe 121, and introduce nitrogen through the air inlet pipe 116, which can facilitate air replacement and improve the efficiency of silicon-carbon coating. By utilizing the characteristics of the sealing plug 119 being connected to the coating box 102 by snapping, the air inlet pipe 116 can be closed, so that the air inlet pipe 116 can only take in air but not out air, which is convenient for nitrogen to be introduced. Secondly, the extrusion motor 204 is used to drive the extrusion bidirectional threaded rod 205 to rotate, so that the extrusion threaded sleeve 206 drives the extrusion rotating rod 207 to rotate, and at the same time, the extrusion rotating rod 207 can drive the extrusion plate 20 8 moves inside the feed box 201, and can press the silicon-carbon raw material into the coating box 102. At the same time, the sprocket transmission assembly 211 and the opening and closing bidirectional threaded rod 212 are driven to rotate by the opening and closing motor 210, so that the opening and closing threaded sleeve 213 drives the opening and closing baffle 214 to move relative to each other. The size of the opening at the bottom of the feed box 201 can be adjusted to facilitate the control of the speed of silicon-carbon raw material discharge. Finally, the coating motor 103 is used to drive the coating rotation shaft 104 to rotate, and the electric telescopic rod 106 is used to drive the meshing rack 107 to move up and down inside the rotating groove 105. The meshing connection between the meshing rack 107 and the rotating gear 108 is used to make the rotating gear 108 drive the coating rotating rod 109 to rotate. Once the coating rotating rod 109 is removed from the inside of the rotating groove 105, the coating rotating rod 109 can be rotated, thereby stirring the carbon material.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A carbon coating device for a mesoporous silicon-carbon negative electrode material, comprising a coating mechanism (1) and an electric telescopic rod (106) installed inside the coating mechanism (1); A feeding mechanism (2) is provided on one side of the top of the coating mechanism (1), and an extrusion plate (208) is provided inside the feeding mechanism (2); It is characterized by: Also includes: The covering mechanism (1) comprises a covering base (101), a covering box (102) is fixedly mounted on the top of the covering base (101), and a covering motor (103) is fixedly mounted at the top center of the covering box (102); The output end of the coated motor (103) is fixedly connected to a coated rotating shaft (104), and rotating grooves (105) are symmetrically provided on both sides of the inner portion of the coated rotating shaft (104); The electric telescopic rods (106) are symmetrically mounted on the inner side of the top of the covering rotating shaft (104); the output ends of the two electric telescopic rods (106) are fixedly connected to meshing racks (107); one side of the meshing racks (107) is meshedly connected to a plurality of rotating gears (108); and the outer side of the rotating gears (108) is fixedly mounted with a covering rotating rod (109); A lifting motor (110) is fixedly mounted on one side of the top of the coating box (102); an output end of the lifting motor (110) is fixedly connected to a lifting threaded rod (111); an outer side of the lifting threaded rod (111) is threadedly connected to a lifting threaded sleeve (112); a lifting plate (113) is fixedly mounted on the outer side of the lifting threaded sleeve (112); a lifting sliding sleeve (114) is fixedly mounted on the side of the lifting plate (113) away from the lifting threaded sleeve (112); and a lifting sliding rod (115) is slidably connected to the interior of the lifting sliding sleeve (114).

2. The carbon coating device for mesoporous silicon-carbon negative electrode material according to claim 1, characterized in that: An air intake pipe (116) is fixedly mounted on one side of the bottom of the covering box (102); an air intake bracket (117) is fixedly mounted on the side of the air intake pipe (116) away from the covering box (102); an air intake spring (118) is fixedly mounted on the inner side of the air intake bracket (117); a sealing plug (119) is fixedly mounted on the end of the air intake spring (118); and the sealing plug (119) is snap-fitted and connected to the covering box (102).

3. The carbon coating device for mesoporous silicon-carbon negative electrode material according to claim 2, characterized in that: A discharge valve (120) is fixedly installed on the front of the bottom of the covering base (101), and an exhaust pipe (121) is fixedly installed on the top of the covering base (101) away from the covering motor (103) and the lifting motor (110).

4. The carbon coating device for mesoporous silicon-carbon negative electrode material according to claim 1, characterized in that: The feeding mechanism (2) comprises a feeding box (201), a feeding plug (202) being threadedly connected to one side of the top of the feeding box (201), a fixing bracket (203) being fixedly mounted on the top of the feeding box (201), an extrusion motor (204) being fixedly mounted on one side of the fixing bracket (203), and an extrusion bidirectional threaded rod (205) being fixedly connected to the output end of the extrusion motor (204).

5. The carbon coating device for mesoporous silicon-carbon negative electrode material according to claim 4, characterized in that: The two ends of the extruded bidirectional threaded rod (205) are symmetrically threadedly connected to the extruded threaded sleeve (206), the bottom of the extruded threaded sleeve (206) is rotatably connected to the extruded rotating rod (207), the two extruded rotating rods (207) are rotatably connected to the extrusion plate (208), and the extrusion plate (208) is slidably connected to the feed box (201).

6. The carbon coating device for mesoporous silicon-carbon negative electrode material according to claim 5, characterized in that: A motor cover (209) is fixedly mounted on one side of the bottom of the feed box (201), an opening and closing motor (210) is fixedly mounted on one side of the interior of the motor cover (209), an output end of the opening and closing motor (210) is fixedly connected to a sprocket transmission assembly (211), an opening and closing bidirectional threaded rod (212) is symmetrically connected to one side of the sprocket transmission assembly (211), the outer sides of the two opening and closing bidirectional threaded rods (212) are symmetrically threadedly connected to an opening and closing threaded sleeve (213), an opening and closing baffle (214) is fixedly mounted on the bottom of one side of the opening and closing threaded sleeve (213), the opening and closing baffle (214) is slidably connected to the feed box (201), a material guide pipe (215) is fixedly mounted on the bottom of the feed box (201), and the material guide pipe (215) is fixedly mounted on one side of the top of the coating box (102).

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