Heat treatment device for producing silicon-carbon composite negative electrode

Abstract

The utility model relates to the technical field of silicon-carbon composite negative electrode production, in particular to a heat treatment device for silicon-carbon composite negative electrode production, which comprises a heating machine, a sealing door and an auxiliary device, the sealing door is mounted on the surface of the heating machine, and the auxiliary device is arranged on the surface of the heating machine and comprises an air outlet pipe. The air outlet pipe is fixedly connected with the surface of the heating machine, the air outlet pipe is communicated with an inner cavity of the heating machine, the surface of the heating machine is fixedly connected with an air inlet pipe, a shell is fixedly connected between the air inlet pipe and the air outlet pipe, the shell is fixedly connected with the surface of the heating machine, the surface of the shell is rotatably connected with fan blades, and the surface of the shell is fixedly connected with a driving motor. According to the heat treatment device disclosed by the utility model, the auxiliary device is arranged to disperse the temperature in the heat treatment device, so that the area with the reduced temperature can be heated, the raw material heating efficiency and the raw material heating uniformity of the heat treatment device are effectively improved, and the performance of the silicon-carbon composite negative electrode is further improved.

Description

Technical Field

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

[0002] ‌Silicon-carbon composite anode material‌ is a special lithium-ion battery anode material that combines the advantages of both silicon and carbon, aiming to improve battery performance. The design concept of this material is based on the similar chemical properties of silicon and carbon, which enables them to be tightly combined to form a composite material. Silicon-carbon composite anode materials usually have a core-shell structure, in which silicon as an active material provides high lithium storage capacity, while carbon acts as a "buffer skeleton" to help compensate for the volume change of the material during the charge and discharge process, thereby improving cycle stability. In addition, the addition of carbon can also improve the conductivity of the material, prevent silicon particles from agglomerating during the charge and discharge cycle, and further enhance the performance of the material. With the development of society, when the silicon-carbon composite anode needs to be heat treated during the production process, a heat treatment device is used.

[0003] Existing equipment, such as CN202321357388, describes a heat treatment device for producing silicon-carbon composite negative electrodes. The device comprises a heat treatment chamber, a rotating shaft extending through the upper side wall of the chamber, a mounting frame connected to the upper side of the chamber, a motor driving the rotating shaft connected to the upper side of the mounting frame, two circular frames connected to the rotating shaft, a discharge plate disposed within the circular frames, multiple heating boxes uniformly connected to the lower sides of the discharge plates, multiple heating wires mounted within the heating boxes, two electric telescopic rods connected between the lower sides of the discharge plates and the bottom of the circular frames, a bearing connected to the outer side of the rotating shaft and located above the lower sides of the circular frames, and a scraper connected to the left side of the bearing. Compared to existing technologies, the present invention has the advantage that fine silicon-carbon particles can be laid flat on the upper side of the discharge plates, and the heating wires heat the discharge plates and the interior of the heat treatment chamber, effectively heating the fine silicon-carbon particles. The scraper deposits the fine silicon-carbon particles to the side of the feed inlet for collection.

[0004] When workers need to process the raw materials of the silicon-carbon composite negative electrode, they place the raw materials in a heat treatment device so that the heat treatment device can perform heat treatment on the raw materials. However, the heat treatment device may have uneven temperature distribution during the heat treatment of the raw materials, resulting in poor structural consistency of the raw materials after processing, which in turn leads to a reduction in the performance of the silicon-carbon composite negative electrode. Utility Model Content

[0005] The purpose of the utility model is to solve the disadvantage of reduced performance of silicon-carbon composite negative electrodes in the prior art, and to propose a heat treatment device for producing silicon-carbon composite negative electrodes.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a heat treatment device for the production of silicon-carbon composite negative electrode, comprising a heating machine, a sealing door and an auxiliary device, the sealing door being installed on the surface of the heating machine, the auxiliary device being arranged on the surface of the heating machine, the auxiliary device comprising an air outlet pipe, the air outlet pipe being fixedly connected to the surface of the heating machine, the air outlet pipe being communicated with the inner cavity of the heating machine, the surface of the heating machine being fixedly connected with an air inlet pipe, the air inlet pipe and the air outlet pipe being fixedly connected with an outer shell, the outer shell being fixedly connected to the surface of the heating machine, the surface of the outer shell being rotatably connected with fan blades, the surface of the outer shell being fixedly connected with a driving motor, the driving end of the driving motor being fixedly connected to the surface of the fan blades, the surface of the outlet pipe being fixedly connected with a main pipe, the two main pipes being symmetrically arranged, and the main pipes can cooperate with the outlet pipes to achieve the purpose of conveying hot air.

[0007] Preferably, a plurality of branch pipes arranged in a linear manner are fixedly connected to the surface of the main pipe, and two groups of branch pipes are symmetrically arranged. The branch pipes can cooperate with the main pipe to achieve the purpose of uniformly heating the raw materials.

[0008] Preferably, a feeding device is provided on the surface of the heating machine, and the feeding device includes rollers. Two groups of rollers are rotatably connected to the surface of the heating machine, and the two groups of rollers are symmetrically arranged. The rollers can cooperate with the heating machine to achieve the purpose of supporting and transporting the placement rack.

[0009] Preferably, a slide groove is provided on the inner surface of the heating machine, and the two slide grooves are symmetrically arranged. The surface of the slide groove is slidably connected with a slider, and the two sliders are symmetrically arranged. The slide groove can cooperate with the heating machine and the slider to achieve the purpose of guiding the slider to slide.

[0010] Preferably, a placement rack is fixedly connected between the two sliders, the placement rack is placed on the surface of the roller, the placement rack is slidably connected to the inner surface of the heating machine, a return spring is fixedly connected between the slider and the slide groove, the two return springs are symmetrically arranged, and the placement rack can cooperate with the slider and the return spring to achieve the purpose of adjusting the sliding of the placement rack.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] In the utility model, by setting an auxiliary device, when the worker performs heat treatment on the raw materials, the raw materials can be effectively and uniformly heat treated. The equipment is used, and the equipment heats the raw materials to achieve the purpose of heat treating the raw materials. The drive motor is started, and the drive motor drives the fan blades. The fan blades rotate inside the outer shell. The fan blades draw out the hot air in the air inlet pipe, and the hot air enters the air outlet pipe. The air outlet pipe guides the hot air to the main pipe. The branch pipes on the surface of the main pipe discharge the hot air and spray it evenly onto the surface of the raw materials. By setting the auxiliary device, the temperature inside the heat treatment device is dispersed, and the area with lowered temperature can be heated, which effectively improves the efficiency of the heat treatment device in heating the raw materials and the uniformity of the heating of the raw materials, thereby improving the performance of the silicon-carbon composite negative electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of a heat treatment device for producing silicon-carbon composite negative electrodes proposed in the utility model;

[0014] Figure 2 This is a schematic diagram of the auxiliary device structure of a heat treatment device for silicon-carbon composite negative electrode production proposed in the utility model;

[0015] Figure 3 This utility model proposes a heat treatment device for the production of silicon-carbon composite negative electrodes. Figure 2 Schematic diagram of the structure at A in the middle;

[0016] Figure 4 This is a schematic diagram of the structure of a material unloading device for a heat treatment device for producing a silicon-carbon composite negative electrode proposed in the utility model;

[0017] Figure 5 This utility model proposes a heat treatment device for the production of silicon-carbon composite negative electrodes. Figure 4 Schematic diagram of the structure at point B in the middle.

[0018] Legend:

[0019] 1. Heating machine; 2. Sealing door; 3. Auxiliary device; 31. Main pipe; 32. Branch pipe; 33. Drive motor; 34. Fan blade; 35. Housing; 36. Inlet pipe; 37. Outlet pipe; 4. Unloading device; 41. Placement rack; 42. Roller; 43. Slide; 44. Slider; 45. Return spring. DETAILED DESCRIPTION

[0020] See also Figure 1-5 The utility model provides a technical solution: a heat treatment device for the production of silicon-carbon composite negative electrodes, comprising a heating machine 1, a sealing door 2 and an auxiliary device 3, the sealing door 2 being installed on the surface of the heating machine 1, and the auxiliary device 3 being arranged on the surface of the heating machine 1.

[0021] The specific settings and functions of the auxiliary device 3 and the blanking device 4 are described in detail below.

[0022] In this embodiment: the auxiliary device 3 includes an air outlet pipe 37, the air outlet pipe 37 is fixedly connected to the surface of the heating machine 1, the air outlet pipe 37 is communicated with the inner cavity of the heating machine 1, the surface of the heating machine 1 is fixedly connected with an air inlet pipe 36, the air inlet pipe 36 and the air outlet pipe 37 are fixedly connected with an outer shell 35, the outer shell 35 is fixedly connected to the surface of the heating machine 1, the surface of the outer shell 35 is rotatably connected with the fan blade 34, the surface of the outer shell 35 is fixedly connected with a drive motor 33, and the driving end of the drive motor 33 is fixedly connected to the surface of the fan blade 34.

[0023] Specifically, the surface of the air outlet pipe 37 is fixedly connected with the main pipe 31 , and the two main pipes 31 are symmetrically arranged. The main pipe 31 can cooperate with the air outlet pipe 37 to achieve the purpose of transporting hot air.

[0024] Specifically, a plurality of branch pipes 32 arranged in a linear manner are fixedly connected to the surface of the main pipe 31 , and the two groups of branch pipes 32 are symmetrically arranged.

[0025] In this embodiment, the branch pipe 32 can cooperate with the main pipe 31 to achieve the purpose of uniform heating of the raw materials.

[0026] In this embodiment: a blanking device 4 is provided on the surface of the heating machine 1, and the blanking device 4 includes rollers 42. Two groups of rollers 42 are rotatably connected to the surface of the heating machine 1. The two groups of rollers 42 are symmetrically arranged. The rollers 42 can cooperate with the heating machine 1 to achieve the purpose of supporting and transporting the placement rack 41.

[0027] Specifically, a slide groove 43 is opened on the inner surface of the heating machine 1, and the two slide grooves 43 are symmetrically arranged. The surface of the slide groove 43 is slidably connected to a slider 44, and the two sliders 44 are symmetrically arranged.

[0028] In this embodiment, the slide groove 43 can cooperate with the heating machine 1 and the slider 44 to achieve the purpose of guiding the slider 44 to slide.

[0029] Specifically, a placement rack 41 is fixedly connected between the two sliders 44, the placement rack 41 is placed on the surface of the roller 42, the placement rack 41 is slidingly connected to the inner surface of the heating machine 1, and a return spring 45 is fixedly connected between the slider 44 and the slide groove 43, and the two return springs 45 are symmetrically arranged.

[0030] In this embodiment, the placement rack 41 can cooperate with the slider 44 and the return spring 45 to achieve the purpose of adjusting the sliding of the placement rack 41.

[0031] Working principle: By setting the auxiliary device 3, when the worker performs heat treatment on the raw materials, the raw materials can be effectively and evenly heat treated. The equipment is used, and the equipment heats the raw materials to achieve the purpose of heat treatment of the raw materials. The drive motor 33 is started, and the drive motor 33 drives the fan blades 34. The fan blades 34 rotate inside the shell 35. The fan blades 34 extract the hot air in the air inlet pipe 36, and the hot air enters the air outlet pipe 37. The air outlet pipe 37 guides the hot air to the main pipe 31. The branch pipe 32 on the surface of the main pipe 31 discharges the hot air and sprays it evenly onto the surface of the raw materials. By setting the auxiliary device 3, the temperature inside the heat treatment device is dispersed, and the area with lowered temperature can be heated, which effectively improves the heating efficiency of the heat treatment device for the raw materials. The efficiency and uniformity of heating of raw materials are improved, thereby improving the performance of the silicon-carbon composite negative electrode. In addition, by setting up the unloading device 4, when the worker needs to unload the raw materials, it is effectively convenient for the worker to unload the raw materials and use the equipment. The equipment heats the raw materials to achieve the purpose of heat treatment of the raw materials. The worker opens the sealing door 2, and the reset spring 45 pulls the slider 44. The slider 44 drives the placement rack 41. The placement rack 41 is pulled and slides forward. The roller 42 assists the placement rack 41 to slide. By setting up the unloading device 4, it is convenient for the worker to quickly take the raw materials out of the heating machine 1, reducing the difficulty of the worker's unloading and avoiding the worker from being scalded, thereby improving the worker's work efficiency and safety.

Claims

1. A heat treatment device for producing silicon-carbon composite negative electrodes, comprising a heating machine (1), a sealing door (2) and an auxiliary device (3), characterized in that: The sealing door (2) is mounted on the surface of the heating machine (1), and the auxiliary device (3) is arranged on the surface of the heating machine (1). The auxiliary device (3) includes an air outlet pipe (37), the air outlet pipe (37) is fixedly connected to the surface of the heating machine (1), the air outlet pipe (37) is communicated with the inner cavity of the heating machine (1), the surface of the heating machine (1) is fixedly connected to an air inlet pipe (36), a housing (35) is fixedly connected between the air inlet pipe (36) and the air outlet pipe (37), the housing (35) is fixedly connected to the surface of the heating machine (1), the surface of the housing (35) is rotatably connected to a fan blade (34), the surface of the housing (35) is fixedly connected to a drive motor (33), and the drive end of the drive motor (33) is fixedly connected to the surface of the fan blade (34).

2. A heat treatment device for producing a silicon-carbon composite negative electrode according to claim 1, characterized in that: The surface of the air outlet pipe (37) is fixedly connected to a main pipe (31), and the two main pipes (31) are symmetrically arranged.

3. A heat treatment device for producing a silicon-carbon composite negative electrode according to claim 2, characterized in that: A plurality of branch pipes (32) arranged in a linear manner are fixedly connected to the surface of the main pipe (31), and two groups of branch pipes (32) are symmetrically arranged.

4. The heat treatment device for producing a silicon-carbon composite negative electrode according to claim 1, characterized in that: The surface of the heating machine (1) is provided with a blanking device (4), and the blanking device (4) includes rollers (42). Two groups of the rollers (42) are rotatably connected to the surface of the heating machine (1), and the two groups of the rollers (42) are symmetrically arranged.

5. A heat treatment device for producing a silicon-carbon composite negative electrode according to claim 4, characterized in that: The inner surface of the heating machine (1) is provided with a slide groove (43), and the two slide grooves (43) are symmetrically arranged. The surface of the slide groove (43) is slidably connected to a slider (44), and the two sliders (44) are symmetrically arranged.

6. A heat treatment device for producing a silicon-carbon composite negative electrode according to claim 5, characterized in that: A placement rack (41) is fixedly connected between the two sliders (44), the placement rack (41) is placed on the surface of the roller (42), the placement rack (41) is slidably connected to the inner surface of the heating machine (1), and a return spring (45) is fixedly connected between the slider (44) and the slide groove (43), and the two return springs (45) are symmetrically arranged.

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