Novel silicon-carbon negative electrode sintering device

Abstract

The utility model discloses a novel silicon carbon negative electrode sintering device which comprises a supporting base, the top of the supporting base is fixedly connected with a sintering mechanism, the middle of the top of the sintering mechanism is fixedly connected with a rotating mechanism, and one side of the top of the sintering mechanism is fixedly connected with a smoke exhaust mechanism. Through the arrangement of the smoke exhaust mechanism, air in the sintering bin can be exhausted along the smoke exhaust port in the sintering process, the accumulation speed of dust on the inner wall of the sintering bin is reduced, meanwhile, the dust attached to the inner wall of the sintering bin can be scraped in time through the scraper blade in the sintering process, the situation that the dust is accumulated too much and falls onto the surface of a silicon-carbon negative electrode is avoided, and the service life of the silicon-carbon negative electrode is prolonged. The arrangement of the dust blocking plate can prevent dust at the top of the sintering bin from falling to the surface of the silicon-carbon negative electrode when the dust is scraped off, and the arrangement of automatic dust scraping in the sintering process avoids the operation that a large amount of dust is accumulated in a conventional sintering bin and regular cleaning is needed, so that the device is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon-carbon negative electrode, in particular to a novel silicon-carbon negative electrode sintering device. Background Art

[0002] Silicon-carbon anode is a composite material composed of silicon and carbon, and is a new type of anode material. In lithium-ion batteries, the anode is an important component of the battery and directly affects the performance and life of the battery. Compared with traditional graphite anodes, silicon-carbon anode materials have higher specific capacity, better cycle performance and rate capability, and are one of the research hotspots in the field of lithium-ion batteries. When producing silicon-carbon anodes, they need to be sintered to remove impurities in silicon-carbon under high temperature, and a sintering device is required during sintering.

[0003] In the process of sintering the silicon-carbon negative electrode, the existing sintering device usually sets the sintering chamber to a closed state to reduce heat loss. However, when sintering the silicon-carbon negative electrode, after the impurities in the silicon-carbon negative electrode are removed by high-temperature sintering, a large amount of dust will exist in the air of the sintering chamber. This dust cannot be discharged during the sintering process, causing the dust to accumulate rapidly on the inner wall of the sintering chamber. When it accumulates to a certain extent, it will fall onto the surface of the silicon-carbon negative electrode during the sintering process, thereby reducing the purity of the silicon-carbon negative electrode. At the same time, the large amount of dust accumulated on the inner wall of the sintering chamber is difficult to clean, making it inconvenient to use. Utility Model Content

[0004] The utility model provides a novel silicon-carbon negative electrode sintering device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A novel silicon-carbon negative electrode sintering device comprises a supporting base, a sintering mechanism is fixedly connected to the top of the supporting base, a rotating mechanism is fixedly connected to the middle of the top of the sintering mechanism, and a smoke exhaust mechanism is fixedly connected to one side of the top of the sintering mechanism.

[0007] Preferably, the sintering mechanism comprises a sintering bin, the bottom of which is fixedly connected to the top of the supporting base, a movable door is provided on the front of the sintering bin, and an observation window is provided in the middle of the movable door.

[0008] Preferably, the bottom of the inner cavity of the sintering bin is fixedly connected with an air outlet plate, the top of the air outlet plate is fixedly connected with an air outlet, the bottom of the inner cavity of the air outlet plate is fixedly connected with a gas pipe, a debris removal hole is opened on one side of the bottom of the inner cavity of the sintering bin, the bottom of the inner cavity of the debris removal hole is fixedly connected with a debris removal pipe, and the interior of the debris removal pipe is connected with the interior of the sintering bin.

[0009] Preferably, the above-mentioned rotating mechanism includes a motor, a reduction gearbox is fixedly connected to the bottom of the motor, one end of the motor shaft is fixedly connected to one end of the reduction gearbox input shaft, the bottom of the reduction gearbox is fixedly connected to the top of the sintering bin, and one end of the reduction gearbox output shaft is fixedly connected to a threaded rod.

[0010] Preferably, a scraper is fixedly connected to the surface of the threaded rod near one end of the reduction gearbox, the shape of the scraper is adapted to the shape of the inner wall of the sintering bin, the outer surface of the scraper is in contact with the inner wall of the sintering bin, and an ash baffle is fixedly connected to the surface of the threaded rod near one end of the reduction gearbox below the scraper, and a temperature detector is fixedly connected to the top of the inner cavity of the ash baffle.

[0011] Preferably, a plurality of placement plates are provided on the threaded rod below the dust baffle plate, the placement plates are fixed to the threaded rod via fixing nuts, and a silicon-carbon negative electrode is placed on the upper surface of the placement plates.

[0012] Preferably, the smoke exhaust mechanism comprises a smoke exhaust port, the bottom of which is fixedly connected to one side of the top of the sintering bin, the upper end of which is threadedly connected to a filter, and the upper end of which is threadedly connected to a smoke exhaust pipe.

[0013] Preferably, a water baffle is fixedly connected to the top of the smoke exhaust pipe, and the inner cavity of the smoke exhaust port is connected to the inner cavity of the sintering bin.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a novel silicon-carbon negative electrode sintering device. Through the arrangement of a smoke exhaust mechanism, during the sintering process, the air in the sintering bin can be discharged along the smoke exhaust port, thereby slowing down the accumulation speed of dust on the inner wall of the sintering bin. At the same time, during the sintering process, the dust attached to the inner wall of the sintering bin can be promptly scraped off by a scraper, thereby preventing excessive dust accumulation and falling onto the surface of the silicon-carbon negative electrode. The arrangement of an ash baffle can prevent the dust on the top of the sintering bin from falling onto the surface of the silicon-carbon negative electrode when being scraped off, and the arrangement of automatically scraping off dust during the sintering process avoids the large amount of dust accumulation in the conventional sintering bin and the need for regular cleaning, thereby making the device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the rotating mechanism structure of the utility model;

[0019] Figure 4 It is a bottom view structural diagram of the rotating mechanism of the utility model.

[0020] In the figure: 1. Support base; 2. Sintering mechanism; 21. Sintering bin; 22. Movable door; 23. Observation window; 24. Air outlet plate; 25. Air outlet; 26. Air pipe; 27. Exhaust hole; 28. Exhaust pipe; 3. Rotating mechanism; 31. Motor; 32. Reducer; 33. Threaded rod; 33. Threaded rod; 34. Scraper; 35. Ash baffle; 36. Temperature detector; 37. Placement plate; 38. Fixing nut; 39. Silicon-carbon negative electrode; 4. Smoke exhaust mechanism; 41. Smoke outlet; 42. Filter; 43. Smoke exhaust pipe; 44. Water baffle. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-4 As shown, the utility model provides a novel silicon-carbon negative electrode sintering device, comprising a support base 1, a sintering mechanism 2 is fixedly connected to the top of the support base 1, a rotating mechanism 3 is fixedly connected to the middle of the top of the sintering mechanism 2, and a smoke exhaust mechanism 4 is fixedly connected to one side of the top of the sintering mechanism 2;

[0023] The sintering mechanism 2 includes a sintering bin 21 , the bottom of which is fixedly connected to the top of the supporting base 1 , a movable door 22 is provided on the front of the sintering bin 21 , and an observation window 23 is provided in the middle of the movable door 22 .

[0024] An air outlet plate 24 is fixedly connected to the bottom of the inner cavity of the sintering bin 21, an air outlet port 25 is fixedly connected to the top of the air outlet plate 24, an air pipe 26 is fixedly connected to the bottom of the inner cavity of the air outlet plate 24, a debris removal hole 27 is opened on one side of the bottom of the inner cavity of the sintering bin 21, and an debris removal pipe 28 is fixedly connected to the bottom of the inner cavity of the debris removal hole 27, and the interior of the debris removal pipe 28 is connected to the interior of the sintering bin 21.

[0025] The rotating mechanism 3 includes a motor 31, a reduction gearbox 32 is fixedly connected to the bottom of the motor 31, one end of the motor 31 shaft is fixedly connected to one end of the reduction gearbox 32 input shaft, the bottom of the reduction gearbox 32 is fixedly connected to the top of the sintering bin 21, and one end of the reduction gearbox 32 output shaft is fixedly connected to a threaded rod 33.

[0026] A scraper 34 is fixedly connected to the surface of the threaded rod 33 near the reduction gearbox 32. The shape of the scraper 34 is adapted to the shape of the inner wall of the sintering bin 21. The outer surface of the scraper 34 contacts the inner wall of the sintering bin 21. An ash baffle 35 is fixedly connected to the surface of the threaded rod 33 near the reduction gearbox 32 below the scraper 34. A temperature detector 36 is fixedly connected to the top of the inner cavity of the ash baffle 35.

[0027] A plurality of placement plates 37 are provided on the threaded rod 33 below the dust shield plate 35 . The placement plates 37 are fixed to the threaded rod 33 via fixing nuts 38 . A silicon-carbon negative electrode 39 is placed on the upper surface of the placement plates 37 .

[0028] The smoke exhaust mechanism 4 includes a smoke exhaust port 41 , the bottom of which is fixedly connected to one side of the top of the sintering bin 21 , the upper end of the smoke exhaust port 41 is threadedly connected to a filter 42 , and the upper end of the filter 42 is threadedly connected to a smoke exhaust pipe 43 .

[0029] A water baffle 44 is fixedly connected to the top of the smoke exhaust pipe 43 , and the inner cavity of the smoke exhaust port 41 is connected to the inner cavity of the sintering chamber 21 .

[0030] The working principle of this utility model:

[0031] like Figure 1-4 As shown, during the sintering process of the silicon-carbon negative electrode 39, first open the movable door 22, rotate the fixing nut 38, so that the placement plate 37 can slide on the surface of the threaded rod 33 to adjust the position, according to the size of the silicon-carbon negative electrode 39, adjust multiple placement plates 37 to a suitable interval, and then fix the placement plate 37 again by the fixing nut 38, and then place the silicon-carbon negative electrode 39 on the surface of the placement plate 37, close the movable door 22, and sintering is carried out. During sintering, the gas is transported to the gas outlet plate 24 through the gas pipe 26, and then enters the sintering chamber 21 along the gas outlet 25, and the gas is ignited to sinter the silicon-carbon negative electrode 39. During the sintering process, the motor 31 shaft rotates to make the output shaft of the reduction box 32 drive the threaded rod 33 to rotate, and then the placement plate 37 drives the silicon-carbon negative electrode 39 to rotate, so that the silicon-carbon negative electrode 39 is heated more The impurities in the silicon-carbon negative electrode 39 are removed under the action of high-temperature sintering, and the smoke generated during sintering can be discharged in time through the smoke exhaust port 41, slowing down the accumulation speed of dust on the inner wall of the sintering bin 21. At the same time, during the smoke exhaust process, the smoke is filtered by the filter 42 to prevent the dust in the smoke from polluting the air, and the filter 42 is threadedly connected with the smoke exhaust port 41 and the smoke exhaust pipe 43, so that the filter 42 is easy to disassemble and the cleaning of the filter 42 is more convenient. At the same time, during the rotation of the placement plate 37, the threaded rod 33 drives the scraper 34 to rotate, so that the scraper 34 scrapes the inner wall of the sintering bin 21 to avoid dust accumulation. At the same time, the automatic dust scraping setting does not require manual cleaning. The scraped dust is pushed by the scraper 34 and discharged from the impurity discharge pipe 28 along the impurity discharge hole 27, making it more convenient to use.

[0032] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A novel silicon-carbon negative electrode sintering device, comprising a supporting base (1), characterized in that: A sintering mechanism (2) is fixedly connected to the top of the support base (1), a rotating mechanism (3) is fixedly connected to the middle of the top of the sintering mechanism (2), and a smoke exhaust mechanism (4) is fixedly connected to one side of the top of the sintering mechanism (2); The sintering mechanism (2) comprises a sintering bin (21), the bottom of the sintering bin (21) being fixedly connected to the top of the supporting base (1), a movable door (22) being arranged on the front of the sintering bin (21), and an observation window (23) being arranged in the middle of the movable door (22); The rotating mechanism (3) comprises a motor (31), the bottom of the motor (31) is fixedly connected to a reduction box (32), one end of the rotating shaft of the motor (31) is fixedly connected to one end of the input shaft of the reduction box (32), the bottom of the reduction box (32) is fixedly connected to the top of the sintering bin (21), and one end of the output shaft of the reduction box (32) is fixedly connected to a threaded rod (33); A scraper (34) is fixedly connected to the surface of one end of the threaded rod (33) close to the reduction box (32); the shape of the scraper (34) is adapted to the shape of the inner wall of the sintering bin (21); the outer surface of the scraper (34) is in contact with the inner wall of the sintering bin (21); an ash baffle (35) is fixedly connected below the scraper (34) and located on the surface of one end of the threaded rod (33) close to the reduction box (32); and a temperature detector (36) is fixedly connected to the top of the inner cavity of the ash baffle (35).

2. The novel silicon-carbon negative electrode sintering device according to claim 1 is characterized in that: The bottom of the inner cavity of the sintering bin (21) is fixedly connected to a gas outlet plate (24), the top of the gas outlet plate (24) is fixedly connected to a gas outlet port (25), the bottom of the inner cavity of the gas outlet plate (24) is fixedly connected to a gas supply pipe (26), a debris removal hole (27) is provided on one side of the bottom of the inner cavity of the sintering bin (21), the bottom of the inner cavity of the debris removal hole (27) is fixedly connected to a debris removal pipe (28), and the interior of the debris removal pipe (28) is connected to the interior of the sintering bin (21).

3. The novel silicon-carbon negative electrode sintering device according to claim 1 is characterized in that: A plurality of placement plates (37) are provided on the threaded rod (33) below the dust baffle plate (35); the placement plates (37) are fixed to the threaded rod (33) via fixing nuts (38); and a silicon-carbon negative electrode (39) is placed on the upper surface of the placement plates (37).

4. The novel silicon-carbon negative electrode sintering device according to claim 1 is characterized in that: The smoke exhaust mechanism (4) comprises a smoke exhaust port (41), the bottom of the smoke exhaust port (41) being fixedly connected to one side of the top of the sintering bin (21), the upper end of the smoke exhaust port (41) being threadedly connected to a filter (42), and the upper end of the filter (42) being threadedly connected to a smoke exhaust pipe (43).

5. The novel silicon-carbon negative electrode sintering device according to claim 4 is characterized in that: A water baffle (44) is fixedly connected to the top of the smoke exhaust pipe (43), and the inner cavity of the smoke exhaust port (41) is connected to the inner cavity of the sintering bin (21).

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