Carbonization equipment for negative electrode material

Abstract

The utility model belongs to the field of lithium battery cathode material carbonization, and discloses cathode material carbonization equipment, which comprises a main body device used for heating from the outer side and integrally rotating, and a transmission device mounted in the main body device and used for heating the cathode material from the inner side and performing meshing transmission, twelve rotating assemblies used for placing and independently rotating the negative electrode material are uniformly arranged on the circumference of the transmission device; the transmission device comprises a supporting column, and a fixing column is arranged on the top of the supporting column. According to the carbonization equipment for the negative electrode material disclosed by the utility model, the negative electrode material is independently rotated after being placed, so that the negative electrode material placed in the carbonization equipment rotates automatically, the periphery of the negative electrode material is uniformly heated, and the carbonization uniformity is improved; through the arrangement of meshing transmission in the overall rotation process, the negative electrode material is meshed and driven to independently rotate in the revolution process, and an additional power source is not needed; and through the arrangement of synchronous heating of the inner side and the outer side, the carbonization speed is increased.

Description

Technical Field

[0001] The utility model belongs to the field of carbonization of lithium battery anode materials, and particularly relates to a carbonization device for anode materials. Background Art

[0002] Lithium battery anode materials are divided into carbon-based materials and non-carbon-based materials. Among them, carbon materials dominate in battery anode materials due to their mature processes and relatively low costs. The anode material is an important part of the battery for storing lithium ions. The preparation process of carbon-based anode materials generally includes precursor preparation, coating, carbonization, and graphitization. Among them, carbonization refers to the process of treating carbon-containing substances at high temperatures to cause the organic substances in them to undergo carbonization reactions to form a carbonaceous structure. In the preparation of lithium battery anode materials, the main purpose of carbonization is to improve the electrical conductivity, mechanical stability, and interfacial stability with the electrolyte of the anode material, thereby improving the overall performance of the battery.

[0003] Comparing with the Chinese patent with the authorization announcement number CN218915920U, it discloses a carbonization furnace for the production of lithium battery anode materials, including an electric heating carbonization furnace. An insulating layer is arranged inside the electric heating carbonization furnace, an electric heating core is arranged inside the insulating layer, a graphite placement grid frame is arranged inside the electric heating core, graphite card slots are arranged inside the graphite placement grid frame, an internal heating ring is arranged at the center of the graphite placement grid frame, a support frame is arranged at the lower side of the electric heating carbonization furnace, a support roller is arranged on one side of the support frame, a power roller is arranged at a position symmetrical to the support roller on the upper side of the support frame, a driving motor is arranged at one end of the power roller, and an air extraction pipe is arranged at the center of the outer side of the electric heating carbonization furnace.

[0004] During the heating process of the anode material in the above patent, the heating surface remains unchanged, which easily causes uneven heating and affects the carbonization uniformity. Therefore, a new device needs to be designed. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a carbonization device for anode materials to solve the problems mentioned in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A carbonization device for anode materials includes a main body device for heating from the outside and rotating as a whole, and further includes a transmission device installed inside the main body device for heating the anode material from the inside and meshing for transmission. Twelve rotating components for placing and separately rotating the anode material are evenly arranged in a circle on the transmission device;

[0008] The transmission device includes a support column, a fixed column is arranged at the top of the support column, an internal heating pipe is installed in front of the fixed column, and a sun gear ring is arranged at the front end of the internal heating pipe;

[0009] The rotating assembly includes a fixed ring, a rotating shaft is arranged behind the fixed ring, a placement net is installed in front of the fixed ring, an installation ring is arranged in front of the placement net, and a planetary gear ring is installed on the outer side of the installation ring.

[0010] Furthermore: The main body device includes a frame, a power roller and a support roller are symmetrically installed on both sides of the top of the frame, a motor is installed in front of the power roller, a carbonization furnace is arranged between the power roller and the support roller, a heat insulation layer is arranged inside the carbonization furnace, an external heating ring is arranged inside the heat insulation layer, and a furnace door is installed in front of the carbonization furnace.

[0011] Furthermore: The fixed column is bolted to the inner heating pipe.

[0012] Furthermore: The rotating shaft and the fixed ring are integrally formed, and the placement net is made of silicon carbide material.

[0013] Furthermore: A pressure relief pipe is arranged at the center position of the furnace door.

[0014] Furthermore: The heat insulation layer is made of heat insulation ceramic material, and the heat insulation layer is bolted to the carbonization furnace.

[0015] Compared with the prior art, the beneficial effects are:

[0016] 1. Through the setting of separately rotating the negative electrode material after placement, the negative electrode material placed inside rotates self, so as to ensure uniform heating around it and improve the uniformity of carbonization;

[0017] 2. Through the setting of meshing transmission during the overall rotation process, the negative electrode material is meshed and driven to rotate self during the revolution of the negative electrode material, without an additional power source;

[0018] 3. Through the setting of synchronous heating on the inner and outer sides, the carbonization speed is increased. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a carbonization device for negative electrode material of the present invention;

[0020] Figure 2 is an axonometric view of the main body device of a carbonization device for negative electrode material of the present invention;

[0021] Figure 3 is an axonometric view of the transmission device of a carbonization device for negative electrode material of the present invention;

[0022] Figure 4 is an axonometric view of the rotating assembly of a carbonization device for negative electrode material of the present invention.

[0023] In the attached drawing reference numerals: 101, frame; 102, driving roller; 103, supporting roller; 104, motor; 105, carbonization furnace; 106, heat insulation layer; 107, external heating ring; 108, furnace door; 109, pressure relief pipe; 201, supporting column; 202, fixing column; 203, internal heating pipe; 204, sun gear ring; 301, fixing ring; 302, rotating shaft; 303, placing net; 304, mounting ring; 305, planetary gear ring. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 - 4 , a carbonization device for negative electrode materials, including a main body device for external heating and overall rotation, and further including a transmission device installed inside the main body device for internal heating of negative electrode materials and meshing transmission. Twelve rotating components for separately rotating negative electrode materials after placement are evenly arranged in a circle around the transmission device.

[0026] In this embodiment: The main body device includes a frame 101. On both sides of the top of the frame 101, a driving roller 102 and a supporting roller 103 are symmetrically installed. In front of the driving roller 102, a motor 104 is installed. Between the driving roller 102 and the supporting roller 103, a carbonization furnace 105 is arranged. Inside the carbonization furnace 105, a heat insulation layer 106 is arranged. Inside the heat insulation layer 106, an external heating ring 107 is arranged. In front of the carbonization furnace 105, a furnace door 108 is installed. At the central position of the furnace door 108, a pressure relief pipe 109 is arranged. The heat insulation layer 106 is made of heat insulation ceramic material. The heat insulation layer 106 is bolted to the carbonization furnace 105. Open the furnace door 108, put the negative electrode material into the carbonization furnace 105, and then close the furnace door 108. The external heating ring 107 heats the negative electrode material from the outside under the heat preservation of the heat insulation layer 106. At the same time, the frame 101 supports the motor 104 to drive the driving roller 102 to drive the carbonization furnace 105 to rotate under the support of the supporting roller 103, so that the hot air inside the carbonization furnace 105 rotates and flows, ensuring the uniformity of the internal temperature. After carbonization, the carbonization furnace 105 is depressurized through the pressure relief pipe 109, and then the furnace door 108 is opened to take out the negative electrode material;

[0027] In this embodiment: The transmission device includes a support column 201. A fixed column 202 is provided at the top of the support column 201. An internal heating tube 203 is installed in front of the fixed column 202. A sun gear ring 204 is provided at the front end of the internal heating tube 203. The fixed column 202 is bolted to the internal heating tube 203. The support column 201 supports the internal heating tube 203 through the fixed column 202 to heat the negative electrode material from the inside. The sun gear ring 204 is used to drive the rotating assembly;

[0028] In this embodiment: The rotating assembly includes a fixed ring 301. A rotating shaft 302 is provided at the back of the fixed ring 301. A placement net 303 is installed in front of the fixed ring 301. An installation ring 304 is provided in front of the placement net 303. A planetary gear ring 305 is installed on the outside of the installation ring 304. The rotating shaft 302 is integrally formed with the fixed ring 301. The placement net 303 is made of silicon carbide. During the rotation of the carbonization furnace 105, the rotating assembly will revolve around the sun gear ring 204 following the carbonization furnace 105, while the sun gear ring 204 is fixed on the internal heating tube 203 and remains stationary. Therefore, the sun gear ring 204 will engage with the planetary gear ring 305 to drive the negative electrode material in the placement net 303 to rotate on its own under the support of the fixed ring 301 and the rotating shaft 302, making the negative electrode material heated more evenly and improving the carbonization quality.

[0029] Working principle: The shape and size of the placement net 303 are the same as those of the negative electrode material. When in use, open the furnace door 108, stuff the negative electrode material into the placement net 303, and then close the furnace door 108. The support column 201 supports the internal heating tube 203 through the fixed column 202 to heat the negative electrode material from the inside. The external heating ring 107 heats the negative electrode material from the outside under the heat preservation of the heat insulation layer 106. At the same time, the frame 101 supports the motor 104 to drive the power roller 102 to drive the carbonization furnace 105 to rotate under the support of the support roller 103, so that the hot air inside the carbonization furnace 105 rotates and flows, ensuring the uniformity of the internal temperature; during the rotation of the carbonization furnace 105, the rotating assembly will revolve around the sun gear ring 204 following the carbonization furnace 105, while the sun gear ring 204 is fixed on the internal heating tube 203 and remains stationary. Therefore, the sun gear ring 204 will engage with the planetary gear ring 305 to drive the negative electrode material in the placement net 303 to rotate on its own under the support of the fixed ring 301 and the rotating shaft 302, making the negative electrode material heated more evenly and improving the carbonization quality; after carbonization is completed, relieve the pressure of the carbonization furnace 105 through the pressure relief pipe 109, and then open the furnace door 108 to take out the negative electrode material.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbonization device for negative electrode materials, comprising a main body device for heating from the outside and rotating as a whole, characterized in that: It also includes a transmission device installed inside the main device for heating the negative electrode material from the inside and engaging the transmission, and the transmission device is evenly arranged with twelve rotating components for placing and rotating the negative electrode material separately; The transmission device comprises a support column (201), a fixing column (202) is arranged on the top of the support column (201), an internal heating pipe (203) is installed in front of the fixing column (202), and a sun gear ring (204) is arranged at the front end of the internal heating pipe (203); The rotating assembly comprises a fixed ring (301), a rotating shaft (302) is arranged behind the fixed ring (301), a placement net (303) is installed in front of the fixed ring (301), a mounting ring (304) is arranged in front of the placement net (303), and a planetary gear ring (305) is installed on the outside of the mounting ring (304).

2. The carbonization device of a negative electrode material according to claim 1, characterized in that: The main device comprises a frame (101), a power roller (102) and a support roller (103) are symmetrically installed on both sides of the top of the frame (101), a motor (104) is installed in front of the power roller (102), a carbonization furnace (105) is arranged between the power roller (102) and the support roller (103), a heat insulation layer (106) is arranged on the inner side of the carbonization furnace (105), an external heating ring (107) is arranged on the inner side of the heat insulation layer (106), and a furnace door (108) is installed in front of the carbonization furnace (105).

3. The carbonization device of a negative electrode material according to claim 1, characterized in that: The fixing column (202) is bolted to the inner heating tube (203).

4. The carbonization device of a negative electrode material according to claim 1, characterized in that: The rotating shaft (302) and the fixing ring (301) are integrally formed, and the placement net (303) is made of silicon carbide.

5. The carbonization device of the negative electrode material according to claim 2, characterized in that: A pressure relief pipe (109) is arranged at the center of the furnace door (108).

6. The carbonization device of the negative electrode material according to claim 2, characterized in that: The heat insulation layer (106) is made of heat insulation ceramic material, and the heat insulation layer (106) is bolted to the carbonization furnace (105).

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