Multilayer electromagnetic modification equipment for graphite negative electrode material

Abstract

The utility model relates to the field of lithium battery material preparation, in particular to graphite cathode material multilayer electromagnetic modification equipment which comprises a supporting frame, a primary processing barrel is arranged above the supporting frame, a secondary processing barrel is arranged below the supporting frame, a first gear box is arranged at the top of the primary processing barrel, and a second gear box is arranged at the bottom of the secondary processing barrel. A first gear box is arranged between the first-stage processing barrel and the second-stage processing barrel, a second gear box is arranged between the first-stage processing barrel and the second-stage processing barrel, coaxial reversing mechanisms are arranged in the first gear box and the second gear box, and a feeding pipe is arranged on one side of the first gear box. Through the coaxial reverse rotation mechanism, forward and reverse stirring can be provided at the same time, the mixing uniformity is enhanced, and the problem of non-uniform mixing in traditional stirring equipment can be solved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery material preparation, and in particular to a multilayer electromagnetic modification device for graphite anode materials. Background Technology

[0002] Graphite anode materials play a crucial role in modern battery technology, especially in lithium-ion batteries. Graphite's excellent conductivity, stability, and low material cost make it the preferred anode material for batteries. During battery charging and discharging, graphite can effectively store lithium ions; its layered structure allows for rapid lithium ion insertion and extraction, improving battery energy density and cycle life. With the rapid development of electric vehicles, portable electronic devices, and renewable energy storage, the demand for high-performance graphite anode materials is increasing. Therefore, modifying and optimizing the processing technology of graphite anode materials is particularly important.

[0003] In the production of graphite anode materials, traditional mixing processes typically involve mixing the graphite anode material with components such as phthalic anhydride. The main purpose of this stage is to achieve good material homogeneity, thereby enhancing the subsequent modification effect. However, during the modification step after mixing, the modifier and mixed materials come into contact with ambient air during the mixing process, leading to a decline in quality. This exposure can not only cause oxidation, degradation, or quality deterioration of the material, but also affect the conductivity of graphite and the overall performance of the battery. The introduction of moisture and impurities from the outside air will also negatively impact the quality of the final product. Traditional mixing is inefficient; inefficient mixing not only prolongs the production cycle but also results in incomplete mixing of materials, causing uneven distribution of different material components, thereby reducing the quality and performance of the material. In battery manufacturing, the homogeneity of the anode material is crucial; even minor batch variations can affect the battery's charge-discharge efficiency and lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a multilayer electromagnetic modification device for graphite anode materials, in order to solve the problems mentioned in the background art, such as low stirring efficiency of traditional graphite anode materials and quality degradation caused by contact with air during stirring.

[0005] To achieve the above objectives, the present invention provides the following technical solution, including a support frame, a primary processing barrel above the support frame, a secondary processing barrel below the support frame, a gearbox one at the top of the primary processing barrel, a gearbox two between the primary and secondary processing barrels, a coaxial reversing mechanism inside both the gearbox one and the gearbox two, and a feed pipe on one side of the gearbox one.

[0006] Furthermore, both gearbox one and gearbox two are equipped with a coaxial reversing mechanism. The coaxial reversing mechanism includes a motor located at the top of gearbox one, with the output end of the motor connected to a main rod. The lower end of the main rod extends into the secondary processing barrel. The portion of the main rod within gearbox one and gearbox two is equipped with a helical gear one. Both gearbox one and gearbox two have a shaft on their inner sides, on which a helical gear two is movably mounted. The helical gear one and helical gear two mesh with each other. A sleeve is located below the helical gear one. The sleeves within gearbox one and gearbox two extend into the primary processing barrel and the secondary processing barrel, respectively. The sleeves within gearbox one and gearbox two are equipped with helical gear three, on their respective portions. The helical gear three meshes with the helical gear two.

[0007] Furthermore, the portion of the main rod extending into the primary processing tank and the secondary processing tank is equipped with several forward stirring rods, and the portion of the sleeve tank within the primary processing tank and the secondary processing tank is equipped with several reverse stirring rods, with the positions of the forward stirring rods and the reverse stirring rods being staggered.

[0008] Furthermore, the bottom of the primary processing barrel is provided with a discharge pipe, a slag discharge port is provided on one side of the discharge pipe, a primary filter screen is provided below the slag discharge port inside the discharge pipe, and a vacuum feeder is provided at the bottom of the discharge pipe. The output end of the vacuum feeder is connected to the secondary processing barrel.

[0009] Furthermore, the secondary processing barrel has a feeding port on one side of the top, a surrounding heater on the lower outer wall of the secondary processing barrel, a grinding and stirring disc at the bottom of the main rod, a discharge port at the bottom of the secondary processing barrel, and a secondary filter screen on the discharge port.

[0010] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0011] 1. Vacuum feeding machines can effectively prevent materials from coming into contact with outside air during processing, reducing the risk of material oxidation, ensuring quality, and also reducing the space required for designing mixing material ramps, thus increasing the internal space of the primary processing drum.

[0012] 2. By adopting a coaxial reversing mechanism, forward and reverse stirring can be provided simultaneously, enhancing the mixing uniformity. The staggered design of the forward and reverse stirring rods makes the stirring effect better, which can effectively improve the performance of graphite anode materials.

[0013] 3. The outer wall of the secondary processing tank is equipped with a surrounding heater, which can uniformly heat the modifier, helping to improve the efficiency and effect of the modification reaction and avoid material problems caused by uneven heating in traditional methods. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall side view structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the overall half-section structure of this utility model;

[0017] Figure 4 This is an enlarged view of the top structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the overall half-section structure of this utility model;

[0019] Figure 6 This is an enlarged view of the structure at point A of this utility model.

[0020] Reference numerals in the attached diagram: 1. Support frame; 2. Primary processing barrel; 3. Secondary processing barrel; 4. Gearbox 1; 5. Gearbox 2; 6. Feed pipe; 7. Coaxial reversing mechanism; 701. Motor; 702. Main rod; 703. Helical gear 1; 704. Helical gear 2; 705. Shaft; 706. Sleeve barrel; 707. Forward stirring rod; 8. Reverse stirring rod; 9. Discharge pipe; 10. Slag discharge port; 11. Primary filter screen; 12. Vacuum feeder; 13. Feed port; 14. Circular heater; 15. Grinding and mixing disc; 16. Discharge port; 17. Secondary filter screen; 18. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0022] This utility model provides a technical solution: a multilayer electromagnetic modification device for graphite anode materials, such as... Figures 1-3 As shown, it includes a support frame 1, a primary processing barrel 2 above the support frame 1, a secondary processing barrel 3 below the support frame 1, a gearbox 4 on the top of the primary processing barrel 2, a gearbox 5 between the primary processing barrel 2 and the secondary processing barrel 3, a coaxial reversing mechanism 7 in both the gearbox 4 and the gearbox 5, and a feed pipe 6 on one side of the gearbox 4.

[0023] Both gearbox 4 and gearbox 5 are equipped with a coaxial reversing mechanism 7. The coaxial reversing mechanism 7 includes a motor 701 located at the top of gearbox 4. The output end of the motor 701 is connected to a main rod 702. The lower end of the main rod 702 extends into the secondary processing barrel 3. The portion of the main rod 702 inside both gearbox 4 and gearbox 5 is equipped with a helical gear 703. Both gearbox 4 and gearbox 5 have a shaft 706 on their inner side, on which a helical gear 703 is movably mounted. 4. Helical gear 1 703 and helical gear 2 704 mesh with each other. A sleeve 707 is provided below helical gear 1 703. The sleeve 707 in gearbox 1 4 and gearbox 2 5 extends into the first-stage processing sleeve 2 and the second-stage processing sleeve 3, respectively. Helical gear 3 705 is provided on the part of the sleeve 707 in gearbox 1 4 and gearbox 2 5. Helical gear 3 705 meshes with helical gear 2 704. The coaxial reversing mechanism 7 inside gearbox 1 4 and gearbox 2 5 has the same structure.

[0024] like Figure 4 As shown, the main rod 702 extending into the primary processing tank 2 and the secondary processing tank 3 is provided with several forward stirring rods 8, and the sleeve 707 within the primary processing tank 2 and the secondary processing tank 3 is provided with several reverse stirring rods 9, with the positions of the forward stirring rods 8 and the reverse stirring rods 9 alternating.

[0025] like Figure 4 , Figure 5 As shown, the bottom of the primary processing tank 2 is provided with a discharge pipe 10, and a slag discharge port 11 is provided on one side of the discharge pipe 10. A primary filter screen 12 is provided below the slag discharge port 11 inside the discharge pipe 10. A vacuum feeder 13 is provided at the bottom of the discharge pipe 10. The output end of the vacuum feeder 13 is connected to the secondary processing tank 3. The vacuum feeder 13 can generate negative pressure on the secondary processing tank 3, so that the mixed material is sucked into the secondary processing tank 3.

[0026] like Figure 6 As shown, a feeding port 14 is provided on one side of the top of the secondary processing barrel 3, a surrounding heater 15 is provided on the lower outer wall of the secondary processing barrel 3, a grinding and stirring disc 16 is provided at the bottom of the main rod 702, a discharge port 17 is provided at the bottom of the secondary processing barrel 3, and a secondary filter screen 18 is provided on the discharge port 17.

[0027] In practice, the operator first adds the graphite anode material and phthalic anhydride to the primary processing tank 2 through the feed inlet 6. Then, the motor 701 is started. The motor 701 drives the main rod 702 to rotate forward, which in turn drives the first helical gear 703 to rotate forward. The first helical gear 703 then drives the second helical gear 704 to rotate, which in turn drives the third helical gear 705 to rotate in reverse. The third helical gear 705 then drives the sleeve tank 707 to rotate in reverse. The main rod 702 drives the forward stirring rod 8 to stir, and the sleeve tank 707 drives the reverse stirring rod 9 to stir, achieving coaxial reverse stirring 7. The coaxial reverse stirring mechanism 7 improves the uniformity of mixing. After the first stage of mixing is completed, the motor 701 is turned off, and the vacuum feeder 13 is turned on. The vacuum feeder 13 generates negative pressure to draw the mixture into the secondary processing tank 3. During this process, unqualified particle size residue is blocked by the primary filter screen 12 and can be discharged from the discharge port 10 after processing. After the mixture enters the secondary processing tank 3, the modifier is added through the feed port 14, and the motor 701 is turned on. The motor 701 will repeat the above process to achieve coaxial reverse stirring 7. During this process, the surrounding heater 15, which consists of electric heating tubes, will be activated. The surrounding heating makes the modification process more effective in modifying the mixed materials. At this time, the grinding and stirring disc 16 at the bottom can further mix the mixture deposited at the bottom. After the secondary processing is completed, the finished product will be discharged from the discharge port 17 at the bottom of the secondary processing tank 3 through the secondary filter screen 18.

[0028] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A multi-layer electromagnetic modification device of graphite negative electrode material, comprising a support frame (1), characterized in that: The support frame (1) is provided with a primary processing barrel (2) above it and a secondary processing barrel (3) below it. The primary processing barrel (2) is provided with a gearbox (4) at the top and a gearbox (5) is provided between the primary processing barrel (2) and the secondary processing barrel (3). Both the gearbox (4) and the gearbox (5) are provided with a coaxial reversing mechanism (7). The gearbox (4) is provided with a feed pipe (6) on one side. The coaxial reversing mechanism (7) includes a motor (701) located at the top of gearbox one (4). The output end of the motor (701) is connected to a main rod (702). The lower end of the main rod (702) extends into the secondary processing barrel (3). The portion of the main rod (702) inside both gearbox one (4) and gearbox two (5) is provided with a helical gear one (703). The inner sides of both gearbox one (4) and gearbox two (5) are provided with shafts (706), and a helical gear two is movably mounted on the shafts (706). (704), the first helical gear (703) and the second helical gear (704) mesh with each other. A sleeve (707) is provided below the first helical gear (703). The sleeve (707) in the first gearbox (4) and the second gearbox (5) extends into the first-stage processing barrel (2) and the second-stage processing barrel (3) respectively. The sleeve (707) is provided with a third helical gear (705) on the part of the first gearbox (4) and the second gearbox (5). The second helical gear (704) and the third helical gear (705) mesh with each other.

2. The multi-layer electromagnetic modification device for graphite negative electrode material according to claim 1, characterized in that: The main rod (702) extending into the primary processing tank (2) and the secondary processing tank (3) is provided with several forward stirring rods (8), and the sleeve tank (707) within the primary processing tank (2) and the secondary processing tank (3) is provided with several reverse stirring rods (9), with the forward stirring rods (8) and the reverse stirring rods (9) being staggered.

3. The multi-layer electromagnetic modification device for graphite negative electrode material according to claim 2, characterized in that: The bottom of the primary processing barrel (2) is provided with a discharge pipe (10), and a slag discharge port (11) is provided on one side of the discharge pipe (10). A primary filter screen (12) is provided below the slag discharge port (11) in the discharge pipe (10). A vacuum feeder (13) is provided at the bottom of the discharge pipe (10). The output end of the vacuum feeder (13) is connected to the secondary processing barrel (3).

4. The multi-layer electromagnetic modification device for graphite negative electrode material according to claim 3, characterized in that: The secondary processing barrel (3) has a feeding port (14) on one side of the top, a surround heater (15) on the lower outer wall of the secondary processing barrel (3), a grinding and stirring plate (16) at the bottom of the main rod (702), a discharge port (17) at the bottom of the secondary processing barrel (3), and a secondary filter screen (18) on the discharge port (17).

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