Carbon coating device for silicon-carbon negative electrode material of lithium battery

Abstract

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery silicon carbon cathode material carbon coating device which comprises a reaction component, a blanking component, a discharging component, a water storage component, an adjusting component and an air exhaust component, a reaction assembly is arranged on the inner side of the fixing frame, a discharging assembly is arranged on the top of the reaction assembly, a discharging assembly is arranged on the inner side of the reaction assembly, a water storage assembly is arranged on the outer side of the fixing frame, an adjusting assembly is arranged on the upper surface of the water storage assembly, an air exhaust assembly is arranged on the top of the adjusting assembly, and the other end of the air exhaust assembly is connected with the water storage assembly. According to the utility model, through a flexible disassembly and assembly mode, the position of the exhaust pipe is flexibly adjusted according to the use requirements, and the exhaust pipe is flexibly mounted and disassembled on the reaction kettle, so that the use flexibility of the device is improved, the operation steps of overhauling and maintaining the device are simplified, the disassembly and assembly steps of the device are optimized, and the time consumed for carrying out maintenance operation is saved; the service life of the device is effectively prolonged, and the practical value of the device is enhanced.

Description

Technical Field

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

[0002] Carbon coating of lithium battery silicon-carbon negative electrode materials is a technology used to improve the performance of lithium batteries. In lithium batteries, the negative electrode material is one of the key components. It is responsible for storing and releasing lithium ions during the charging and discharging process, thereby effectively improving the battery performance.

[0003] When the current carbon coating device for lithium battery silicon-carbon negative electrode materials is used, it is necessary to inject inert gas into the reactor and pump out the air. In order to ensure that the reactor is filled with inert gas, a gas monitor is needed to monitor the gas concentration. Since the exhaust pipes of most devices are directly fixedly connected to the reactor, and the monitors are mostly installed at the connection between the exhaust pipe and the reactor, the pipes need to be removed when inspecting and maintaining the monitors, which makes the operation during inspection and maintenance more inconvenient.

[0004] Therefore, in view of the inconvenience of disassembling and assembling the ventilation pipe for maintenance of the existing carbon coating device for silicon-carbon negative electrode materials of lithium batteries, a carbon coating device for silicon-carbon negative electrode materials of lithium batteries can be designed. Through flexible disassembly and assembly, the position of the exhaust pipe can be flexibly adjusted according to usage requirements, and the exhaust pipe can be flexibly installed and disassembled on the reactor, thereby improving the flexibility of the device. Utility Model Content

[0005] In order to overcome the problem of carbon coating devices for silicon-carbon negative electrode materials of most lithium batteries, the exhaust pipes of most devices are directly fixedly connected to the reactor. The pipes need to be removed when inspecting and maintaining the monitor, which leads to inconvenient operation during inspection.

[0006] The technical solution of the utility model is: a carbon coating device for silicon-carbon negative electrode materials of lithium batteries, including a fixed frame, a reaction component, a feeding component, a discharging component, a water storage component, an adjusting component and an exhaust component; a reaction component is arranged on the inner side of the fixed frame, a feeding component is arranged on the top of the reaction component, a discharging component is arranged on the inner side of the reaction component, a water storage component is arranged on the outer side of the fixed frame, an adjusting component is arranged on the upper surface of the water storage component, an exhaust component is arranged on the top of the adjusting component, and the other end of the exhaust component is interconnected with the water storage component.

[0007] Preferably, a fixed frame is provided to support the reaction component, a material is injected into the reaction component by a feeding component, the position of the exhaust component is flexibly adjusted by an adjusting component, the air inside the reaction component is extracted by the exhaust component, clean water is stored by a water storage component, the extracted air is dissolved in the clean water in the water storage component, and when the interior of the reaction component is filled with an inert gas, the reaction component is used to carry out a coating treatment operation, and the material after the reaction treatment is discharged from the reaction component by a discharging component, thereby realizing flexible installation and disassembly of the exhaust pipe on the reactor, improving the flexibility of the device and enhancing the practical value of the device.

[0008] Preferably, the reaction assembly includes a reactor, a heating wire and a heating motor; the reactor is arranged on the inner side of the fixed frame, the heating wire is arranged inside the outer wall of the reactor, the heating motor is arranged outside the reactor, and the output end of the heating motor is connected to the heating wire; the reactor is used to store materials for production and processing, and the heating motor is used to control the temperature of the heating wire to increase, so as to increase the temperature of the internal environment of the reactor by increasing the heating wire, thereby accelerating the reaction speed of the materials.

[0009] Preferably, the material discharge assembly includes a discharge hopper, a first solenoid valve, an air intake pipe and a second solenoid valve; a discharge hopper is arranged on the top of the reactor, the discharge hopper and the interior of the reactor are interconnected, a first solenoid valve is arranged on the outside of the discharge hopper, an air intake pipe is also arranged on the top of the reactor, the air intake pipe and the interior of the reactor are interconnected, and a second solenoid valve is arranged on the outside of the air intake pipe; the material is injected into the reactor through the discharge hopper, the opening and closing state of the discharge hopper is flexibly controlled by the first solenoid valve, inert gas is injected into the reactor through the air intake pipe, and the opening and closing state of the air intake pipe is flexibly controlled by the second solenoid valve.

[0010] Preferably, the discharge assembly includes a rotating shaft, a rotating motor, a stirring rod, a discharge pipe and a third solenoid valve; a rotating shaft is arranged in the center of the top inside the reactor, the rotating shaft and the reactor are rotatably connected to each other, a rotating motor is arranged on the top of the reactor, the output end of the rotating motor is connected to the rotating shaft, a stirring rod is arranged on the outside of the rotating shaft, and there are multiple groups of stirring rods, a discharge pipe is arranged at the bottom of the reactor, the discharge pipe and the interior of the reactor are interconnected, and a third solenoid valve is arranged on the outside of the discharge pipe; the rotating motor drives the rotating shaft to rotate, the rotating shaft drives the stirring rod to rotate, the stirring rod is used to accelerate the movement of materials inside the reactor, thereby accelerating the reaction speed of the materials, and the completely reacted materials are discharged from the reactor through the discharge pipe, and the opening and closing state of the discharge pipe is flexibly controlled by the third solenoid valve.

[0011] Preferably, the water storage component includes a fixed seat, a support column, a water storage tank, a sealing cover, a water injection pipe, a water outlet pipe and a water valve; a fixed seat is arranged on the outside of the fixed frame, a support column is arranged on the bottom of the fixed seat, two groups of support columns are arranged, a water storage tank is opened on one side of the fixed seat, a sealing cover is arranged above the water storage tank, a water injection pipe is arranged on the top of the sealing cover, the water injection pipe and the water storage tank are interconnected, a water outlet pipe is arranged on the bottom of the fixed seat, the water outlet pipe and the water storage tank are interconnected, and a water valve is arranged on the outside of the water outlet pipe; the fixed seat is fixedly supported by the support column, the position of the water storage tank is clearly defined by the fixed seat, clean water is stored in the water storage tank, the water storage tank is closed by the sealing cover, clean water is injected into the water storage tank through the water injection pipe, the opening and closing state of the water outlet pipe is controlled by the water valve, and the water containing impurities in the water storage tank is discharged from the device through the water outlet pipe.

[0012] Preferably, the adjustment component includes a first groove, a screw rod, a drive motor, a support rod, a first pipeline, an air hose, an exhaust pipeline and a positioning seat; a first groove is provided on the upper surface of the fixed seat, the first groove is provided on one side of the water storage tank, a screw rod is arranged on the inner side of the first groove, a drive motor is arranged on one side of the fixed seat, the drive motor is arranged above the sealing cover, the output end of the drive motor is connected to the screw rod, a support rod is arranged on the outer side of the screw rod, a first pipeline is arranged on the top of the sealing cover, the first pipeline and the water storage tank are interconnected, a gas hose is arranged at one end of the first pipeline, an exhaust pipeline is arranged at one end of the gas hose, a positioning seat is arranged on the outer side of the exhaust pipeline, and the positioning seat is arranged at one end of the support rod; the position of the screw rod is fixed by the first groove, the screw rod is driven to rotate by the drive motor, the position of the support rod is moved by rotating the screw rod, the positioning seat is fixed by the support rod, the position of the exhaust assembly is fixed by the positioning seat, air is transported to the gas hose through the exhaust pipeline, air is transported to the first pipeline by the gas hose, and the air is discharged and dissolved in the clean water in the water storage tank through the first pipeline.

[0013] Preferably, the vacuum assembly includes a vacuum pump, an annular block, and a fixed block; the vacuum pump is arranged on the upper surface of the fixed seat, the vacuum pump is connected to the first pipeline, an annular block is arranged at one end of the vacuum pipeline, and a fixed block is arranged on the outside of the reactor; the vacuum pump is started to extract the air inside the reactor, the annular block is connected with the fixed block, and the annular block is used to ensure the sealing of the vacuum pipeline.

[0014] Preferably, the monitoring component includes a ventilation groove, a gas concentration monitor and an annular groove; a ventilation groove is opened on one side of the fixed block, the ventilation groove is interconnected with the interior of the reactor, a gas concentration monitor is arranged on the inner side of the ventilation groove, an annular groove is opened on one side of the fixed block, and the annular clamping block and the annular groove are interlocked with each other; the ventilation groove is used to ensure the penetration of the exhaust pipe, and the gas concentration monitor is used to monitor the concentration of the inert gas in the ventilation groove in real time, and the annular clamping block is engaged with the annular groove to ensure the sealing effect of the exhaust pipe.

[0015] Beneficial effects of the utility model:

[0016] 1. Compared with the traditional carbon coating device of lithium battery silicon-carbon negative electrode material, a gas monitor is required to monitor the gas concentration. Since the exhaust pipes of most devices are directly fixedly connected to the reactor, and the monitors are mostly installed at the connection between the exhaust pipes and the reactor, the pipelines need to be removed when inspecting and maintaining the monitors, which makes the operation during inspection and maintenance inconvenient. Through flexible disassembly and assembly, the position of the exhaust pipes can be flexibly adjusted according to the use requirements, and the exhaust pipes can be flexibly installed and disassembled on the reactor, thereby improving the flexibility of the device, simplifying the operation steps when inspecting and maintaining the device, and enhancing the practical value of the device;

[0017] 2. When moving the air pipe, the support fixing seat is fixed by the support column, the position of the screw rod is fixed by the first groove on the fixing seat, the screw rod is driven to rotate by the driving motor, the rotating screw rod drives the positioning seat on the support rod to move, and the positioning seat is used to fix and support the exhaust pipe, so that the position of the exhaust pipe is driven to move synchronously by the rotation of the screw rod, and the gas delivery hose is driven to expand and contract, so that the annular clamping block can be flexibly moved out and inserted into the annular clamping groove, and the annular clamping block is embedded in the annular clamping groove on the fixing block, so that the exhaust pipe and the ventilation groove are connected to ensure the sealing effect of the exhaust operation. At the same time, the concentration of the inert gas in the ventilation groove is monitored in real time by the gas concentration monitor, so as to solve the problem that it is inconvenient to disassemble and assemble the ventilation pipe for maintenance in most carbon-coated devices of silicon-carbon negative electrode materials of lithium batteries, and enhance the flexibility of the device;

[0018] 3. During the reaction operation, clean water is injected into the water storage tank through the water injection pipe, the water storage tank is closed with a sealing cover, the vacuum pump is started to extract the air inside the reactor, and the air is discharged and dissolved in the clean water in the water storage tank. At the same time, the second solenoid valve is opened to open the air inlet pipe, and the inert gas is injected into the reactor. When the inert gas concentration in the ventilation tank reaches 100%, the first solenoid valve is used to open the lower hopper, and the material is injected into the reactor through the lower hopper. The heating motor is used to control the temperature of the heating wire to increase, thereby heating the internal environment temperature of the reactor. At the same time, the rotating motor drives the rotating shaft to rotate, and the rotating shaft drives the stirring rod to rotate. The stirring rod is used to accelerate the movement of the material inside the reactor to make the material fully react. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 What is shown is a schematic diagram of the three-dimensional structure of a carbon coating device for silicon-carbon negative electrode materials of a lithium battery according to the utility model;

[0020] Figure 2 Shown is a schematic diagram of the three-dimensional structure of a reaction component of a carbon coating device for silicon-carbon negative electrode materials of a lithium battery according to the utility model;

[0021] Figure 3 What is shown is a schematic diagram of the three-dimensional structure of an adjustment component of a carbon coating device for silicon-carbon negative electrode materials of a lithium battery according to the utility model;

[0022] Figure 4 Shown is a schematic diagram of the three-dimensional structure of an exhaust component of a carbon coating device for silicon-carbon negative electrode materials of a lithium battery according to the utility model.

[0023] Explanation of reference numerals: 1, fixed frame; 2, reaction assembly; 3, material discharge assembly; 4, material discharge assembly; 5, water storage assembly; 6, adjustment assembly; 7, air extraction assembly; 8, monitoring assembly; 201, reaction kettle; 202, heating wire; 203, heating motor; 301, material discharge hopper; 302, first solenoid valve; 303, air inlet pipe; 304, second solenoid valve; 401, rotating shaft; 402, rotating motor; 403, stirring rod; 404, material discharge pipe; 405, third solenoid valve; 501, fixed Seat; 502, support column; 503, water storage tank; 504, sealing cover; 505, water injection pipe; 506, water outlet pipe; 507, water valve; 601, first groove; 602, screw rod; 603, drive motor; 604, support rod; 605, first pipeline; 606, gas hose; 607, air extraction pipeline; 608, positioning seat; 701, air extraction pump; 702, annular clamping block; 703, fixing block; 801, ventilation groove; 802, gas concentration monitor; 803, annular clamping groove. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1 The utility model provides an embodiment: a carbon coating device for silicon-carbon negative electrode materials of lithium batteries, comprising a fixed frame 1, a reaction component 2, a feeding component 3, a discharging component 4, a water storage component 5, an adjusting component 6 and an exhaust component 7; a reaction component 2 is arranged on the inner side of the fixed frame 1, a feeding component 3 is arranged on the top of the reaction component 2, a discharging component 4 is arranged on the inner side of the reaction component 2, a water storage component 5 is arranged on the outer side of the fixed frame 1, an adjusting component 6 is arranged on the upper surface of the water storage component 5, an exhaust component 7 is arranged on the top of the adjusting component 6, and the other end of the exhaust component 7 is interconnected with the water storage component 5.

[0026] See also Figure 2In this embodiment, the reaction component 2 includes a reaction kettle 201, a heating wire 202 and a heating motor 203; the reaction kettle 201 is arranged inside the fixing frame 1, the heating wire 202 is arranged inside the outer wall of the reaction kettle 201, and the heating motor 203 is arranged outside the reaction kettle 201. The output end of the heating motor 203 is connected with the heating wire 202. The reaction kettle 201 stores the materials for production and processing, and the heating motor 203 is used to control the temperature of the heating wire 202 to increase, so as to increase the temperature of the internal environment of the reaction kettle 201 by the heating wire 202, thereby accelerating the reaction speed of the materials; the material discharge component 3 includes a discharge hopper 301, a first solenoid valve 302, and an air inlet pipe 303. and a second solenoid valve 304; a lower hopper 301 is arranged on the top of the reactor 201, the lower hopper 301 is interconnected with the inside of the reactor 201, a first solenoid valve 302 is arranged on the outside of the lower hopper 301, an air inlet pipe 303 is also arranged on the top of the reactor 201, the air inlet pipe 303 is interconnected with the inside of the reactor 201, a second solenoid valve 304 is arranged on the outside of the air inlet pipe 303, materials are injected into the reactor 201 through the lower hopper 301, the opening and closing state of the lower hopper 301 is flexibly controlled by the first solenoid valve 302, inert gas is injected into the reactor 201 through the air inlet pipe 303, and the opening and closing state of the air inlet pipe 303 is flexibly controlled by the second solenoid valve 304;

[0027] The discharge assembly 4 includes a rotating shaft 401, a rotating motor 402, a stirring rod 403, a discharge pipe 404 and a third solenoid valve 405; a rotating shaft 401 is arranged in the middle of the top of the inner side of the reactor 201, the rotating shaft 401 and the reactor 201 are rotatably connected to each other, a rotating motor 402 is arranged on the top of the reactor 201, the output end of the rotating motor 402 is connected to the rotating shaft 401, a stirring rod 403 is arranged on the outer side of the rotating shaft 401, and the stirring rod 403 is arranged in multiple groups, and a discharge pipe 404 is arranged at the bottom of the reactor 201. The material pipe 404 and the discharge pipe 404 are interconnected with the interior of the reactor 201. A third solenoid valve 405 is arranged on the outer side of the discharge pipe 404. The rotating motor 402 drives the rotating shaft 401 to rotate, and the rotating shaft 401 drives the stirring rod 403 to rotate. The stirring rod 403 is used to accelerate the movement of the material inside the reactor 201, thereby accelerating the reaction speed of the material. The completely reacted material is discharged from the reactor 201 through the discharge pipe 404, and the opening and closing state of the discharge pipe 404 is flexibly controlled by the third solenoid valve 405.

[0028] See also Figure 3-Figure 4In this embodiment, the water storage component 5 includes a fixed seat 501, a support column 502, a water storage tank 503, a sealing cover 504, a water injection pipe 505, a water outlet pipe 506 and a water valve 507; a fixed seat 501 is arranged on the outside of the fixed frame 1, a support column 502 is arranged on the bottom of the fixed seat 501, and two groups of support columns 502 are arranged. A water storage tank 503 is opened on one side of the fixed seat 501, a sealing cover 504 is arranged above the water storage tank 503, and a water injection pipe 505 is arranged on the top of the sealing cover 504. The water injection pipe 505 and the water storage tank 503 are mutually connected, and the fixed seat A water outlet pipe 506 is provided on the bottom surface of 501, and the water outlet pipe 506 and the water storage tank 503 are mutually connected. A water valve 507 is provided on the outside of the water outlet pipe 506. The support column 502 is used to fix the support base 501, and the position of the water storage tank 503 is clearly defined through the support base 501. Clean water is stored in the water storage tank 503, and the water storage tank 503 is closed by the sealing cover 504. Clean water is injected into the water storage tank 503 through the water injection pipe 505. The opening and closing state of the water outlet pipe 506 is controlled by the water valve 507, and the water containing impurities in the water storage tank 503 is discharged from the device through the water outlet pipe 506;

[0029] The adjusting component 6 includes a first groove 601, a screw rod 602, a driving motor 603, a support rod 604, a first pipeline 605, an air delivery hose 606, an air extraction pipeline 607 and a positioning seat 608; the upper surface of the fixed seat 501 is provided with a first groove 601, the first groove 601 is provided on one side of the water storage tank 503, a screw rod 602 is arranged on the inner side of the first groove 601, a driving motor 603 is arranged on one side of the fixed seat 501, the driving motor 603 is arranged above the sealing cover 504, the output end of the driving motor 603 is connected to the screw rod 602, the outer side of the screw rod 602 is provided with a support rod 604, the top of the sealing cover 504 is provided with a first pipeline 605, the first pipeline 605 and the water storage tank 503 are mutually connected, and the first pipeline A gas hose 606 is provided at one end of 605, a suction pipe 607 is provided at one end of the gas hose 606, a positioning seat 608 is provided outside the suction pipe 607, the positioning seat 608 is provided at one end of the support rod 604, the position of the screw rod 602 is fixed by the first groove 601, the screw rod 602 is driven to rotate by the driving motor 603, the support rod 604 is driven to move by the rotating screw rod 602, the positioning seat 608 is fixed by the support rod 604, the position of the suction component 7 is fixed by the positioning seat 608, the air is transported to the gas hose 606 through the suction pipe 607, the air is transported to the first pipe 605 by the gas hose 606, and the air is discharged and dissolved in the clean water in the water storage tank 503 through the first pipe 605;

[0030] The air extraction component 7 includes an air extraction pump 701, an annular block 702, and a fixing block 703; the upper surface of the fixing seat 501 is provided with the air extraction pump 701, the air extraction pump 701 is connected to the first pipeline 605, an annular block 702 is provided at one end of the air extraction pipeline 607, and a fixing block 703 is provided outside the reactor 201. The air extraction pump 701 is started to extract the air inside the reactor 201, and the annular block 702 is connected with the fixing block 703, and the annular block 702 is used to ensure the sealing of the air extraction pipeline 607; the monitoring component 8 includes a ventilation groove 801, a gas concentration monitor 80 2 and an annular groove 803; a ventilation groove 801 is provided on one side of the fixed block 703, the ventilation groove 801 is interconnected with the interior of the reactor 201, a gas concentration monitor 802 is arranged on the inner side of the ventilation groove 801, an annular groove 803 is provided on one side of the fixed block 703, the annular block 702 and the annular groove 803 are interlocked with each other, the ventilation groove 801 is used to ensure the penetration of the exhaust pipe 607, the gas concentration monitor 802 is used to monitor the concentration of the inert gas in the ventilation groove 801 in real time, and the annular block 702 is engaged with the annular groove 803 to ensure the sealing effect of the exhaust pipe 607.

[0031] Before the reaction operation, the support fixing seat 501 is fixed by the support column 502, clean water is injected into the water storage tank 503 through the water injection pipe 505, the water storage tank 503 is closed by the sealing cover 504, and the screw rod 602 in the first groove 601 is driven by the driving motor 603 to rotate, and the rotating screw rod 602 drives the positioning seat 608 on the support rod 604 to move, so that the annular clamping block 702 is embedded in the annular clamping groove 803 on the fixing block 703;

[0032] During the ventilation operation, the first solenoid valve 302 is used to open the lower hopper 301, and the material is injected into the reactor 201 through the lower hopper 301. Subsequently, the first solenoid valve 302 is closed, and the air pump 701 is started to extract the air inside the reactor 201, and the air is transported from the air extraction pipeline 607 to the air delivery hose 606, so that the air is transported to the first pipeline 605, and the air is discharged and dissolved in the clean water in the water storage tank 503. At the same time, the second solenoid valve 304 is opened to open the air inlet pipe 303, and the inert gas is injected into the reactor 201. The concentration of the inert gas in the ventilation tank 801 is monitored in real time by the gas concentration monitor 802;

[0033] During the reaction operation, when the concentration in the ventilation slot 801 reaches 100%, the heating motor 203 is used to control the temperature of the heating wire 202 to increase, thereby heating the internal environment temperature of the reactor 201. At the same time, the rotating motor 402 drives the rotating shaft 401 to rotate, and the rotating shaft 401 drives the stirring rod 403 to rotate. The stirring rod 403 is used to accelerate the movement of the material inside the reactor 201, so that the material reacts fully.

[0034] After the reaction operation is completed, the third solenoid valve 405 is used to open the discharge pipe 404 to discharge the reacted raw materials from the reactor 201, and the water valve 507 is turned to open the water outlet pipe 506, and the water containing impurities in the water storage tank 503 is discharged from the device through the water outlet pipe 506.

[0035] Through the above steps, the reaction component 2 is fixedly supported by setting a fixed frame 1, the material is injected into the reaction component 2 by using the unloading component 3, the position of the exhaust component 7 is flexibly adjusted by the adjusting component 6, the air inside the reaction component 2 is extracted by the exhaust component 7, the clean water is stored by the water storage component 5, the extracted air is dissolved in the clean water in the water storage component 5, and when the inside of the reaction component 2 is filled with inert gas, the reaction component 2 is used to carry out the coating treatment operation, and the material after the reaction treatment is discharged from the reaction component 2 by the discharge component 4.

[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A carbon coating device for a lithium battery silicon-carbon negative electrode material, comprising a fixing frame (1); characterized in that: The invention also comprises a reaction component (2), a material discharge component (3), a material discharge component (4), a water storage component (5), an adjustment component (6) and an air extraction component (7); the reaction component (2) is arranged on the inner side of the fixed frame (1), the material discharge component (3) is arranged on the top of the reaction component (2), the material discharge component (4) is arranged on the inner side of the reaction component (2), the water storage component (5) is arranged on the outer side of the fixed frame (1), the adjustment component (6) is arranged on the upper surface of the water storage component (5), the air extraction component (7) is arranged on the top of the adjustment component (6), and the air extraction component ( 7) and the other end is connected to the water storage assembly (5); a first groove (601) is provided on the upper surface of the fixing seat (501), the first groove (601) is provided on one side of the water storage tank (503), a screw rod (602) is provided inside the first groove (601), a driving motor (603) is provided on one side of the fixing seat (501), the driving motor (603) is provided above the sealing cover (504), the output end of the driving motor (603) is connected to the screw rod (602), and a support rod (602) is provided outside the screw rod (602). 4), a first pipe (605) is arranged on the top of the sealing cover (504), the first pipe (605) and the water storage tank (503) are mutually connected, a gas delivery hose (606) is arranged at one end of the first pipe (605), a gas extraction pipe (607) is arranged at one end of the gas delivery hose (606), a positioning seat (608) is arranged on the outside of the gas extraction pipe (607), and the positioning seat (608) is arranged at one end of the support rod (604); an air extraction pump (701) is arranged on the upper surface of the fixing seat (501), and the air extraction pump (701) and the first The pipes (605) are connected to each other, an annular clamping block (702) is arranged at one end of the exhaust pipe (607), and a fixing block (703) is arranged outside the reaction kettle (201); a ventilation groove (801) is opened on one side of the fixing block (703), the ventilation groove (801) and the inside of the reaction kettle (201) are interconnected, a gas concentration monitor (802) is arranged inside the ventilation groove (801), an annular clamping groove (803) is opened on one side of the fixing block (703), and the annular clamping block (702) and the annular clamping groove (803) are interlocked.

2. A carbon coating device for silicon-carbon negative electrode material of a lithium battery according to claim 1, characterized in that: The reaction assembly (2) comprises a reaction kettle (201), a heating wire (202) and a heating motor (203); the reaction kettle (201) is arranged on the inner side of the fixing frame (1), the heating wire (202) is arranged inside the outer wall of the reaction kettle (201), the heating motor (203) is arranged on the outer side of the reaction kettle (201), and the output end of the heating motor (203) is connected to the heating wire (202).

3. A carbon coating device for silicon-carbon negative electrode material of a lithium battery according to claim 2, characterized in that: The material discharge assembly (3) comprises a material discharge hopper (301), a first solenoid valve (302), an air intake pipe (303) and a second solenoid valve (304); the material discharge hopper (301) is arranged on the top of the reaction kettle (201), the material discharge hopper (301) and the interior of the reaction kettle (201) are mutually connected, the first solenoid valve (302) is arranged on the outside of the material discharge hopper (301), the air intake pipe (303) is also arranged on the top of the reaction kettle (201), the air intake pipe (303) and the interior of the reaction kettle (201) are mutually connected, and the second solenoid valve (304) is arranged on the outside of the air intake pipe (303).

4. A carbon coating device for silicon-carbon negative electrode material of a lithium battery according to claim 2, characterized in that: The discharge assembly (4) comprises a rotating shaft (401), a rotating motor (402), a stirring rod (403), a discharge pipe (404) and a third electromagnetic valve (405); a rotating shaft (401) is arranged in the middle of the top of the inner side of the reactor (201), the rotating shaft (401) and the reactor (201) are rotatably connected to each other, a rotating motor (402) is arranged on the top of the reactor (201), the output end of the rotating motor (402) and the rotating shaft (401) are connected to each other, a stirring rod (403) is arranged on the outer side of the rotating shaft (401), and a plurality of stirring rods (403) are arranged, a discharge pipe (404) is arranged at the bottom of the reactor (201), the discharge pipe (404) and the inside of the reactor (201) are mutually connected, and a third electromagnetic valve (405) is arranged on the outer side of the discharge pipe (404).

5. A carbon coating device for silicon-carbon negative electrode material of a lithium battery according to claim 2, characterized in that: The water storage assembly (5) comprises a fixed seat (501), a support column (502), a water storage tank (503), a sealing cover (504), a water injection pipe (505), a water outlet pipe (506) and a water valve (507); the fixed seat (501) is arranged outside the fixed frame (1), the support column (502) is arranged on the bottom surface of the fixed seat (501), two groups of support columns (502) are arranged, and one side of the fixed seat (501) is provided with a water tank (503). A water storage tank (503) is provided, a sealing cover (504) is arranged above the water storage tank (503), a water injection pipe (505) is arranged on the top of the sealing cover (504), the water injection pipe (505) and the water storage tank (503) are mutually connected, a water outlet pipe (506) is arranged on the bottom surface of the fixed seat (501), the water outlet pipe (506) and the water storage tank (503) are mutually connected, and a water valve (507) is arranged on the outside of the water outlet pipe (506).

6. A carbon coating device for silicon-carbon negative electrode material of a lithium battery according to claim 5, characterized in that: The adjusting assembly (6) comprises a first groove (601), a screw rod (602), a driving motor (603), a supporting rod (604), a first pipeline (605), an air delivery hose (606), an air extraction pipeline (607) and a positioning seat (608); the upper surface of the fixing seat (501) is provided with a first groove (601), the first groove (601) is provided on one side of the water storage tank (503), the screw rod (602) is provided inside the first groove (601), the driving motor (603) is provided on one side of the fixing seat (501), and the driving motor (603) is provided on the sealing cover. (504), the output end of the driving motor (603) is connected to the screw rod (602), a support rod (604) is arranged outside the screw rod (602), a first pipe (605) is arranged on the top of the sealing cover (504), the first pipe (605) and the water storage tank (503) are connected to each other, an air supply hose (606) is arranged at one end of the first pipe (605), an air extraction pipe (607) is arranged at one end of the air supply hose (606), a positioning seat (608) is arranged outside the air extraction pipe (607), and the positioning seat (608) is arranged at one end of the support rod (604).

7. A carbon coating device for silicon-carbon negative electrode material of a lithium battery according to claim 6, characterized in that: The vacuum assembly (7) comprises a vacuum pump (701), an annular clamping block (702), and a fixing block (703); the vacuum pump (701) is arranged on the upper surface of the fixing seat (501), the vacuum pump (701) is connected to the first pipeline (605), an annular clamping block (702) is arranged at one end of the vacuum pipeline (607), and a fixing block (703) is arranged on the outside of the reaction kettle (201).

8. A carbon coating device for silicon-carbon negative electrode material of a lithium battery according to claim 6, characterized in that: The monitoring component (8) comprises a ventilation groove (801), a gas concentration monitor (802) and an annular groove (803); a ventilation groove (801) is provided on one side of the fixed block (703); the ventilation groove (801) and the interior of the reaction kettle (201) are interconnected; a gas concentration monitor (802) is provided on the inner side of the ventilation groove (801); an annular groove (803) is provided on one side of the fixed block (703); and the annular block (702) and the annular groove (803) are interlocked.

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