Demagnetizing treatment device for lithium battery negative electrode material

Abstract

The invention relates to the technical field of demagnetization of lithium battery materials, in particular to a square frame of a demagnetization treatment device for a lithium battery negative electrode material, a leakage bin is fixedly connected to the center of the top of the square frame, an electromagnetic coil is arranged on the outer surface of the bottom of the leakage bin, and a discharging pipe fixedly penetrates through the bottom of the electromagnetic coil; a servo air cylinder is fixedly connected to the outer surface of the discharging pipe, a plurality of charging boxes are slidably connected to the inner side of the bottom of the square frame, a plurality of magnetic conduction nets are arranged in the center of the interior of the electromagnetic coil, a guide plate for controlling and switching discharging is arranged in the discharging pipe, and the output end of the servo air cylinder is rotationally connected to the guide plate in the discharging pipe. A first stirring plate and a second stirring plate can extend into the material leakage cabin by rotating a rocking rod, and then a servo motor is started to drive the first stirring plate to rotate clockwise and the second stirring plate to rotate anticlockwise to stir materials in the material leakage cabin, so that the adhesion between the materials can be effectively reduced; and blockage of a demagnetizing area caused by material caking during demagnetizing is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of magnetic removal for lithium battery materials, and particularly to a magnetic removal treatment device for the negative electrode material of a lithium battery. Background Art

[0002] With the progress of technology and the booming development of the new energy industry, as an efficient and environmentally friendly energy storage device, lithium-ion batteries have been widely used in many fields such as electric vehicles, portable electronic devices, and energy storage systems. The performance of lithium-ion batteries is directly affected by their positive and negative electrode materials. Among them, the quality of the negative electrode material is crucial for the overall performance and safety of the battery. In the production process of lithium battery negative electrode materials, a crucial step is magnetic removal treatment. During the preparation of negative electrode materials, a small amount of magnetic substances such as iron, cobalt, and nickel will be mixed in. If these magnetic substances cannot be effectively removed, it will seriously affect the electrochemical performance of the negative electrode material, reducing the cycle life and safety of the battery. When traditional magnetic removal devices are used to process lithium battery negative electrode materials, the materials to be magnetically removed are poured into the magnetic removal equipment, and then the battery coil is energized to adsorb the magnetic substances in the materials, so as to complete the magnetic removal of the magnetic substances in the negative electrode material.

[0003] As can be seen from the above-mentioned magnetic removal equipment, the following defects still exist:

[0004] 1. When the staff pours the negative electrode material into the leakage hopper, due to the certain adhesiveness and easy aggregation of the negative electrode material, it is easy to cause the negative electrode material to agglomerate in the leakage hopper. When these agglomerated materials enter the electromagnetic coil, they will get stuck inside, affecting the passage of subsequent materials. And when the electromagnetic coil removes the magnetism of the materials, when the adhered materials pass through the magnetic removal area, due to the irregular size and shape of the agglomerates, the magnetic substances cannot be fully exposed to the magnetic removal device, which is likely to affect the magnetic removal effect. And when these materials are made into batteries, they will affect the battery performance and cause self-discharge.

[0005] 2. When the loading box at the bottom of the magnetic removal equipment is full, the staff needs to replace the loading box. Since the electromagnetic coil is very hot when energized for magnetic removal, it is easy to cause harm to the staff when replacing the loading box. And because the position of manually replacing the box is prone to be inconsistent, it is easy to cause the subsequent magnetically removed materials to spill on the ground, resulting in material contamination and the need for reprocessing.

[0006] Therefore, the present invention proposes a magnetic removal treatment device for lithium battery negative electrode materials to make up for and improve the deficiencies of the existing technology. Summary of the Invention

[0007] Aiming at the defects existing in the prior art, the present invention provides a magnetic removal treatment device for lithium battery negative electrode materials, which can effectively solve the corresponding technical problems raised in the above background art.

[0008] To achieve the above object, the present invention is realized through the following technical solutions:

[0009] The present invention discloses a demagnetization treatment device for the negative electrode material of a lithium battery, including a square frame. At the center of the top of the square frame, there is a fixed leakage hopper. The outer surface of the bottom of the leakage hopper is provided with an electromagnetic coil. The bottom of the electromagnetic coil is fixedly penetrated by a discharge pipe. The outer surface of the discharge pipe is fixedly connected with a servo cylinder. Inside the square frame at the bottom, there are multiple sliding loading boxes. At the center inside the electromagnetic coil, there are multiple magnetic conduction nets. The output end of the servo cylinder is rotatably connected to a guide plate inside the discharge pipe;

[0010] The anti-splash stirring mechanism is used to increase the fluidity of the negative electrode material when pouring the negative electrode material into the leakage hopper;

[0011] The automatic pushing mechanism is used to prompt the loading box at the bottom to move forward when the servo cylinder drives the discharge pipe to switch channels.

[0012] Preferably, symmetrically fixed connection support bars are provided on the upper surface of the square frame. Square grooves are penetrated on the outer surface of the support bars. Arc grooves are penetrated on the outer surface of the support bars on the side close to the center of the square frame. Inside the top of the support bars, there are rotatable rocking bars. Both ends of the rocking bars penetrate inside the support bars and are fixedly connected with connecting bars. The top of the connecting bars is fixedly connected with a swinging bar. The bottom of the swinging bar is rotatably connected with a sliding block. The end of the sliding block close to the swinging bar is slidably connected inside the arc groove on the outer surface of the support bar. The side of the sliding block away from the swinging bar is slidably connected inside the square groove on the outer surface of the support bar. The bottom of the sliding block is slidably connected with a trapezoidal block. The side of the trapezoidal block away from the rocking bar is slidably connected inside the support bar. The bottom of the trapezoidal block is fixedly connected with a first spring. The bottom of the first spring is fixedly connected with the bottom inside the support bar.

[0013] Preferably, a sealing cover is fixedly connected to the top of the sliding block. At the center of the upper surface of the sealing cover, there is a fixedly connected servo motor. The output shaft of the servo motor is fixedly connected with a first conical wheel. On the outer surface of the output shaft of the servo motor on the side away from the first conical wheel, there is a rotatable U-shaped frame. In the middle of the U-shaped frame, there is a rotatable second conical tooth. The outer surface of the second conical tooth is meshed with the outer surface of the first conical wheel. On the outer surface of the second conical tooth on the side away from the first conical wheel, there is a meshed third conical tooth. The center of the third conical tooth is rotatably connected to the outer surface of the output shaft of the servo motor.

[0014] Preferably, one side of the U-shaped frame close to the third bevel gear is rotatably connected to the outer surface of the bottom of the third bevel gear. The bottom of the output shaft of the servo motor is fixedly connected with a first stirring plate. The bottom of the third bevel gear is fixedly connected with a second stirring plate. The center of the second stirring plate is sleeved on the outer surface of the output shaft of the servo motor.

[0015] Preferably, the bottom of the output shaft of the servo cylinder is fixedly connected with a rack. The outer surface of the rack is engaged with a gear. The outer surface of the gear is rotatably connected to the outer surface of the discharge pipe. The inside of the gear is fixedly connected with a ratchet wheel. The inside of the ratchet wheel is rotatably connected with a turntable. The center of the turntable is fixedly connected with a rotating shaft. The rotating shaft inside the turntable is rotatably connected to the outer surface of the discharge pipe. The outer surface of the turntable is rotatably connected with an elastic piece. The top end of the elastic piece is clamped inside the ratchet wheel.

[0016] Preferably, one side of the elastic piece away from the discharge pipe is fixedly connected with a rotating rod. The bottom of the rotating rod is fixedly connected with a follower rod. The bottom of the follower rod is rotatably connected with a sliding plate. The outer surface of the sliding plate is slidably connected to the upper surface of the inner side of the bottom of the square frame.

[0017] Preferably, one side of the sliding plate away from the follower rod is rotatably connected with a wedge block. The bottom of the wedge block is clamped with a sliding strip. A plurality of direction holes are linearly penetrated through the upper surface of the sliding strip. The bottom of the sliding strip is slidably connected to the upper surface of the inner side of the bottom of the square frame. One side of the sliding strip away from the follower rod is fixedly connected with a pushing strip. The side of the pushing strip away from the sliding strip is slidably connected to the upper surface of the inner side of the bottom of the square frame.

[0018] Preferably, a first pulley strip is rotatably connected to the inner side of the bottom of the square frame. The outer surface of the first pulley strip is rotatably connected with a fixing piece. The bottom of the first pulley strip is attached to a second pulley strip. One end of the second pulley strip away from the first pulley strip is rotatably connected to the inner side of the bottom of the square frame. A cylindrical protrusion is fixedly connected to the outer surface of the second pulley strip. The cylindrical protrusion on the outer surface of the second pulley strip is clamped inside the fixing piece. A second spring is fixedly connected to the outer surface of the fixing piece. The side of the second spring away from the fixing piece is fixedly connected to the outer surface of the first pulley strip.

[0019] Adopting the technical solution provided by the present invention, compared with the known public technology, the following beneficial effects are obtained:

[0020] 1. By rotating the shaking rod, the first stirring plate and the second stirring plate of the present invention can extend into the material leakage bin. Then, by starting the servo motor, the first stirring plate is prompted to rotate clockwise and the second stirring plate rotates counterclockwise to stir the materials in the material leakage bin, which can effectively reduce the adhesiveness between the materials, avoid the blockage of the demagnetization area caused by material caking during demagnetization, and also make the magnetic substances in the materials more fully exposed, enabling the demagnetization device to more easily identify and separate these substances, thereby improving the demagnetization efficiency. During stirring, the bottom of the sealing cover will fit the top of the material leakage bin, which can effectively prevent the materials from flying out due to centrifugal force or vibration during stirring.

[0021] 2. When the present invention outputs and switches the outlet of the discharge pipe through the servo cylinder, it can drive the loading box at the bottom to move simultaneously, improving the continuity of demagnetization. When the magnetic materials are completely discharged from the discharge port, the demagnetized materials can be directly discharged into the new loading box, reducing the direct contact of the staff inside the equipment, reducing the operation risk, and also avoiding the errors caused by manually placing the loading box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described with reference to the embodiments illustrated in the following drawings, where:

[0023] Figure 1 is the front view three-dimensional structure schematic diagram of the present invention;

[0024] Figure 2 is the internal structure sectional view of the main body of the present invention;

[0025] Figure 3 is the partial schematic diagram of the anti-splash stirring mechanism of the present invention;

[0026] Figure 4 is the partial schematic diagram of the other side of the anti-splash stirring mechanism of the present invention;

[0027] Figure 5 is the partial schematic diagram of the automatic pushing mechanism of the present invention;

[0028] Figure 6 For the present invention Figure 5 is the enlarged structure schematic diagram of part A in;

[0029] Figure 7 is the partial structure schematic diagram of the other side of the automatic pushing mechanism of the present invention;

[0030] Figure 8 is the partial structure connection diagram of the automatic pushing mechanism of the present invention.

[0031] The reference numerals in the drawings respectively represent:

[0032] 1, square frame; 11, material leakage bin; 12, electromagnetic coil; 13, discharge pipe; 14, servo cylinder;

[0033] 2. Anti-splash stirring mechanism; 21. Support bar; 211. Rocking rod; 212. Connecting bar; 213. Oscillating bar; 214. Sliding block; 215. Trapezoidal block; 216. First spring; 22. Sealing cover; 221. Servo motor; 222. First conical pulley; 223. U-shaped frame; 224. Second conical tooth; 225. Third conical tooth; 226. First stirring plate; 227. Second stirring plate;

[0034] 3. Automatic pushing mechanism; 31. Rack; 311. Gear; 312. Ratchet; 313. Turntable; 314. Elastic piece; 32. Rotating rod; 321. Follow-up rod; 322. Sliding plate; 323. Wedge block; 324. Sliding bar; 325. Pushing bar; 33. First pulley bar; 331. Fixed piece; 332. Second pulley bar; 333. Second spring. Detailed implementation mode

[0035] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] The present invention will be further described below with reference to the embodiments.

[0037] Embodiments of the present invention

[0038] Refer to Figure 1 and Figure 2 As shown, a demagnetization treatment device for the negative electrode material of a lithium battery includes a square frame 1. A leakage hopper 11 is fixedly connected to the center of the top of the square frame 1. An electromagnetic coil 12 is arranged on the outer surface of the bottom of the leakage hopper 11. A discharge pipe 13 is fixedly penetrated through the bottom of the electromagnetic coil 12. A servo cylinder 14 is fixedly connected to the outer surface of the discharge pipe 13. A plurality of loading boxes are slidably connected to the inner side of the bottom of the square frame 1. A plurality of magnetic conduction nets are arranged at the center of the electromagnetic coil 12. The output end of the servo cylinder 14 is rotatably connected to a guide plate inside the discharge pipe 13;

[0039] The anti-splash stirring mechanism 2 is used to increase the fluidity of the negative electrode material when pouring the negative electrode material into the leakage hopper 11;

[0040] The automatic pushing mechanism 3 is used to prompt the loading box at the bottom to move forward when the servo cylinder 14 drives the discharge pipe 13 to switch channels.

[0041] Refer to Figure 3 andFigure 4 As shown in the figure, a demagnetization treatment device for the negative electrode material of a lithium battery. The upper surface of the square frame 1 is symmetrically and fixedly connected with support bars 21. A square groove is penetrated and opened on the outer surface of the support bar 21. An arc groove is penetrated and opened on the outer surface of the support bar 21 on the side close to the center of the square frame 1. The inner side of the top of the support bar 21 is rotatably connected with a rocking rod 211. Both ends of the rocking rod 211 penetrate through the inside of the support bar 21 and are fixedly connected with connecting bars 212. The top of the connecting bar 212 is fixedly connected with a swing bar 213. The bottom of the swing bar 213 is rotatably connected with a sliding block 214. One end of the sliding block 214 close to the swing bar 213 is slidably connected in the arc groove on the outer surface of the support bar 21. The side of the sliding block 214 away from the swing bar 213 is slidably connected in the square groove on the outer surface of the support bar 21. The bottom of the sliding block 214 is slidably connected with a trapezoidal block 215. The side of the trapezoidal block 215 away from the rocking rod 211 is slidably connected to the inner side of the support bar 21. The bottom of the trapezoidal block 215 is fixedly connected with a first spring 216. The bottom of the first spring 216 is fixedly connected to the bottom of the inner side of the support bar 21.

[0042] Among them, the top of the sliding block 214 is fixedly connected with a sealing cover 22. The center of the upper surface of the sealing cover 22 is fixedly connected with a servo motor 221. The output shaft of the servo motor 221 is fixedly connected with a first conical wheel 222. The outer surface of the output shaft of the servo motor 221 on the side away from the first conical wheel 222 is rotatably connected with a U-shaped frame 223. The middle of the U-shaped frame 223 is rotatably connected with a second conical tooth 224. The outer surface of the second conical tooth 224 is meshed with the outer surface of the first conical wheel 222. The outer surface of the second conical tooth 224 on the side away from the first conical wheel 222 is meshed with a third conical tooth 225. The center of the third conical tooth 225 is rotatably connected to the outer surface of the output shaft of the servo motor 221. The side of the U-shaped frame 223 close to the third conical tooth 225 is rotatably connected to the outer surface of the bottom of the third conical tooth 225. The bottom of the output shaft of the servo motor 221 is fixedly connected with a first stirring plate 226. The bottom of the third conical tooth 225 is fixedly connected with a second stirring plate 227. The center of the second stirring plate 227 is sleeved on the outer surface of the output shaft of the servo motor 221.

[0043] The effects of this embodiment are as follows: In the prior art, when the staff pours the negative electrode material into the leakage bin 11, due to the certain adhesiveness and easy aggregation inside the negative electrode material, it is easy to cause the negative electrode material to agglomerate in the leakage bin 11. When these agglomerated materials enter the electromagnetic coil 12, they will get stuck inside, affecting the passage of subsequent materials. And when the electromagnetic coil 12 demagnetizes the materials, when the adhered materials pass through the demagnetization area, due to the irregular size and shape of the agglomerates, the magnetic substances cannot be fully exposed to the demagnetization device, which easily affects the demagnetization effect. Compared with the prior art, by rotating the shaking rod 211, the first stirring plate 226 and the second stirring plate 227 can extend into the leakage bin 11. Then, by starting the servo motor 221, the first stirring plate 226 rotates clockwise and the second stirring plate 227 rotates counterclockwise to stir the materials in the leakage bin 11, which can effectively reduce the adhesiveness between the materials, avoid the blockage of the demagnetization area caused by material agglomeration during demagnetization, and can also make the magnetic substances in the materials more fully exposed, so that the demagnetization device can more easily identify and separate these substances, thereby improving the demagnetization efficiency. During stirring, the bottom of the sealing cover 22 will fit the top of the leakage bin 11, which can effectively prevent the materials from flying out due to centrifugal force or vibration during stirring.

[0044] Reference Figures 5 to 8 As shown in the figure, for a demagnetization treatment device for the negative electrode material of a lithium battery, the bottom of the output shaft of the servo cylinder 14 is fixedly connected with a rack 31. The outer surface of the rack 31 is engaged with a gear 311. The outer surface of the gear 311 is rotatably connected to the outer surface of the discharge pipe 13. The inside of the gear 311 is fixedly connected with a ratchet 312. The inside of the ratchet 312 is rotatably connected to a turntable 313. The center of the turntable 313 is fixedly connected with a rotating shaft. The rotating shaft inside the turntable 313 is rotatably connected to the outer surface of the discharge pipe 13. The outer surface of the turntable 313 is rotatably connected to a shrapnel 314. The top of the shrapnel 314 is clamped inside the ratchet 312. One side of the shrapnel 314 away from the discharge pipe 13 is fixedly connected with a rotating rod 32. The bottom of the rotating rod 32 is fixedly connected with a follower rod 321. The bottom of the follower rod 321 is rotatably connected to a sliding plate 322. The outer surface of the sliding plate 322 is slidably connected to the upper surface of the inner side of the bottom of the square frame 1.

[0045] Wherein, on one side of the sliding plate 322 away from the follower rod 321, a wedge-shaped block 323 is rotatably connected. A sliding bar 324 is clamped at the bottom of the wedge-shaped block 323. A plurality of direction holes are linearly and penetratingly formed on the upper surface of the sliding bar 324. The bottom of the sliding bar 324 is slidably connected to the upper surface of the inner side of the bottom of the square frame 1. On one side of the sliding bar 324 away from the follower rod 321, a pushing bar 325 is fixedly connected. On one side of the pushing bar 325 away from the sliding bar 324, it is slidably connected to the upper surface of the inner side of the bottom of the square frame 1. Inside the bottom of the square frame 1, a first pulley bar 33 is rotatably connected. A fixing piece 331 is rotatably connected to the outer surface of the first pulley bar 33. The bottom of the first pulley bar 33 is in contact with a second pulley bar 332. One end of the second pulley bar 332 away from the first pulley bar 33 is rotatably connected to the inner side of the bottom of the square frame 1. A cylindrical protrusion is fixedly connected to the outer surface of the second pulley bar 332. The cylindrical protrusion on the outer surface of the second pulley bar 332 is clamped inside the fixing piece 331. A second spring 333 is fixedly connected to the outer surface of the fixing piece 331. One side of the second spring 333 away from the fixing piece 331 is fixedly connected to the outer surface of the first pulley bar 33.

[0046] The effects of this embodiment are as follows: In the prior art, when the loading box at the bottom of the demagnetization device is full, it is necessary for workers to replace the loading box. Since the electromagnetic coil 12 has a very high temperature when energized for demagnetization, it is easy to cause harm to workers when replacing the loading box. And because the position of manually replacing the box is likely to be inconsistent, it is easy to cause the subsequent demagnetized materials to spill on the ground. In comparison with the prior art, when the servo cylinder 14 outputs to switch the outlet of the discharge pipe 13, it can drive the loading box at the bottom to move simultaneously, improving the continuity of demagnetization. When the magnetic materials are completely discharged from the discharge port, the demagnetized materials can be directly discharged into the new loading box, reducing the direct contact between workers and the inside of the device, reducing the operation risk, and also avoiding the error caused by manually placing the loading box.

[0047] The complete working principle and steps of the above embodiments are as follows:

[0048] Anti-splash stirring step:

[0049] As Figure 3 and Figure 4 shown, when the demagnetization device is in the initial state, the first spring 216 is in a balanced state, and the lower surface of the sealing cover 22 has not yet been attached to the upper surface of the leakage bin 11;

[0050] When the staff uses this device to demagnetize the negative electrode material, first pour the material into the inside of the material leakage bin 11, and then start the electromagnetic coil 12. When an electric current is passed through the electromagnetic coil 12 to generate a magnetic field, at this time, the staff can rotate the rocking rod 211 rotatably connected to the inside of the upper surface of the support bar 21 upward. As the rocking rod 211 rotates upward, it will drive the connecting bars 212 fixedly connected to both ends of the rocking rod 211 to rotate simultaneously. As the connecting bars 212 rotate, it will drive the swing bar 213 rotatably connected to the top of the connecting bars 212 to swing downward. The bottom of the swing bar 213 is rotatably connected to one end of the slider 214 close to the support bar 21. As the swing bar 213 swings downward, it will drive the slider 214 to flip downward in the arc-shaped groove on the upper surface of the support bar 21. As the slider 214 rotates downward clockwise, it will squeeze the trapezoidal block 215 attached to the bottom of the slider 214, causing the trapezoidal block 215 to slide downward inside the support bar 21. As the trapezoidal block 215 slides downward, the first spring 216 fixedly connected to the bottom of the trapezoidal block 215 is pressurized into a compressed state. When the rocking rod 211 then rotates upward, the swing bar 213 will drive the slider 214 to disengage from the arc-shaped groove of the support bar 21, causing the right side of the slider 214 to slide into the square groove on the outer surface of the support bar 21. At this time, the slider 214 drives the sealing cover 22 to flip into a horizontal state. As the connecting bars 212 and the swing bar 213 continue to rotate, the slider 214 moves downward in the square groove on the outer surface of the support bar 21. As the slider 214 moves downward, it drives the sealing cover 22 to move simultaneously, causing the lower surface of the sealing cover 22 to fit with the upper surface of the material leakage bin 11, thus achieving the effect of preventing the lithium battery material from splashing. It ensures that when the lithium battery material is demagnetized, the sealing cover 22 can effectively isolate dust, moisture and other impurities in the external environment, effectively avoiding these pollutants from entering the inside of the material leakage bin 11, thereby protecting the purity and quality of the lithium battery material. Secondly, the substances inside the lithium battery material are prone to oxidation in the air. The sealing cover 22 can reduce the direct contact between the material and the air, reduce the oxidation risk, and maintain the stability and activity of the material;

[0051] Compared with the existing technology where the cover plate flips and covers, the sealing cover 22 rotates and presses down, which can ensure that during the fitting process, the sealing surface can contact the upper surface of the material leakage bin 11 evenly and tightly, reducing the risk of leakage. And the operation of rotating and pressing down is relatively simple and straightforward. Especially in the common situation where the material leakage bin 11 needs to be frequently opened and closed, by rotating to achieve fitting, it can reduce the dependence on the operating space and improve the flexibility and efficiency of the operation. During the process of rotating the cover plate for sealing, due to inertia, it will cause impact and wear on the upper surface of the material leakage bin 11. While the way of rotating and pressing down can gradually apply pressure downward to achieve fitting, reducing the damage to the equipment caused by the instantaneous impact force.

[0052] At this time, the staff starts the servo motor 221 fixedly connected to the upper surface of the sealing cover 22. As the output of the servo motor 221 rotates clockwise, it drives the first conical wheel 222 fixedly connected to the outer surface of the output shaft of the servo motor 221 to rotate simultaneously. While the first conical wheel 222 rotates clockwise, it drives the third conical tooth 225 to rotate counterclockwise through the second conical tooth 224, causing the third conical tooth 225 to rotate counterclockwise on the outer surface of the output shaft of the servo motor 221. While the third conical tooth 225 rotates, it drives the second stirring plate 227 fixedly connected to the bottom of the third conical tooth 225 to rotate counterclockwise simultaneously. When the output shaft of the servo motor 221 rotates clockwise, it drives the first stirring plate 226 at the bottom to rotate clockwise, thereby fully stirring the materials inside the leakage bin 11. The sealing cover 22 rotates and presses down, driving the first stirring plate 226 and the second stirring plate 227 to extend into the interior of the leakage bin 11 at the same time, so that the first stirring plate 226 and the second stirring plate 227 can extend into the interior of the lithium battery materials, can fully contact the materials, reduce the stirring blind area, effectively reduce the adhesiveness between the materials, avoid the blockage of the demagnetization area caused by the caking of the materials during demagnetization, and can also make the magnetic substances in the materials more fully exposed, so that the demagnetization device can more easily identify and separate these substances, thereby improving the demagnetization efficiency. Moreover, the combination of the sealing cover 22 and the stirring mechanism makes the operation more convenient. The staff only needs to control the rotation and pressing down action of the sealing cover 22 to realize the automatic entry and stirring operation of the stirring device, reducing the operation steps. The design of rotation and pressing down helps to save equipment space and makes the whole stirring device more compact.

[0053] Compared with the stirring in the prior art, due to the tight fit between the sealing cover 22 and the leakage bin 11, during the stirring process of the first stirring plate 226 and the second stirring plate 227 inside the leakage bin 11, it effectively prevents the dust generated by the materials from floating into the air, can also avoid the waste caused by the spilling of the materials during stirring, and the sealing cover 22 also isolates the pollution caused by the external environment to the materials, ensuring the quality and purity of the materials during stirring.

[0054] Automatic pushing step:

[0055] As Figures 5 to 8 shown, when the demagnetization device is in the initial state, the outer surface of the gear 311 meshes with the bottom of the rack 31, the top of the elastic piece 314 is clamped inside the ratchet wheel 312, and the bottom of the wedge block 323 is clamped inside the square hole of the sliding bar 324;

[0056] When the amount of magnetic material inside the electromagnetic coil 12 reaches a certain quantity, the output shaft of the servo cylinder 14 outputs outward to drive the baffle inside the discharge pipe 13 to rotate, and then the power supply of the electromagnetic coil 12 is cut off. At this time, the magnetic material will flow out from the outlet on the side of the discharge pipe 13. As the output shaft of the servo cylinder 14 moves outward, it will drive the rack 31 fixedly connected to the bottom of the output shaft of the electromagnetic coil 12 to move downward simultaneously. As the rack 31 moves downward, it will drive the gear 311 meshing with the outer surface of the rack 31 to rotate clockwise. As the gear 311 rotates clockwise, it will drive the ratchet 312 fixedly connected to the inside of the gear 311 to rotate simultaneously. The inside of the ratchet 312 is clamped to the top of the elastic piece 314. As the ratchet 312 rotates, it will drive the turntable 313 to rotate simultaneously through the elastic piece 314. As the turntable 313 rotates, it will drive the rotating rod 32 fixedly connected to the side of the turntable 313 away from the discharge pipe 13 to rotate simultaneously. As the rotating rod 32 rotates 180 degrees, it will drive the follower rod 321 rotatably connected to the bottom of the rotating rod 32 to rotate simultaneously. As the follower rod 321 rotates, it will drive the sliding plate 322 rotatably connected to the bottom of the follower rod 321 to slide, causing the sliding plate 322 to slide on the upper surface of the inner side of the bottom of the square frame 1 towards the center of the bottom of the square frame 1. As the sliding plate 322 slides, it will drive the wedge block 323 to disengage from the inside of the sliding strip 324, causing the bottom of the wedge block 323 to slide into the square hole on the side of the sliding strip 324 close to the follower rod 321. As the rotating rod 32 rotates another 180 degrees, it will drive the sliding plate 322 to move away from the center of the inner side of the bottom of the square frame 1 through the follower rod 321. At this time, when the wedge block 323 is clamped and moves in the square groove inside the sliding strip 324, it will drive the sliding strip 324 to move simultaneously. As the sliding strip 324 moves, it will drive the pushing strip 325 fixedly connected to the side of the sliding strip 324 away from the sliding plate 322 to move simultaneously. As the pushing strip 325 moves, it will drive the loading box to slide simultaneously on the upper surface of the inner side of the bottom of the square frame 1, so that the empty loading box slides to the bottom of the discharge pipe 13. When the magnetic material inside the electromagnetic coil 12 is completely discharged, the output end of the servo cylinder 14 will retract inward. As the servo cylinder 14 retracts inward, the rack 31 at the bottom will move upward simultaneously. When the rack 31 moves upward, it will drive the gear 311 to rotate counterclockwise. When the gear 311 drives the ratchet 312 to rotate counterclockwise, the top of the elastic piece 314 will not be clamped inside the ratchet 312 at this time. Thus, as the gear 311 rotates, it will not drive the rotating rod 32 to rotate. When the discharge pipe 13 discharges the magnetic material, it can drive the loading box at the bottom to move simultaneously, improving the continuity of demagnetization. When the magnetic material is completely discharged from the discharge port, the demagnetized material can be directly discharged into the new loading box, reducing the direct contact between the staff and the inside of the equipment, reducing the operation risk, and also avoiding the error caused by manually placing the loading box.

[0057] Moreover, the inner side of the bottom of the square frame 1 is rotatably connected to the left side of the first pulley bar 33, the bottom of the first pulley bar 33 is in contact with the upper surface of the second pulley bar 332, and the side of the second pulley bar 332 away from the first pulley bar 33 is rotatably connected to the inner side of the bottom of the square frame 1. At this time, it is convenient for the demagnetization device to move. After the device moves, the staff can step on the upper surface of the first pulley bar 33 with one foot and slide towards the side close to the second pulley bar 332, prompting the fixing piece 331 on the outer surface of the first pulley bar 33 to rotate clockwise. At this time, the second spring 333 on the outer surface of the fixing piece 331 is rotationally stretched, prompting the cylindrical protrusion on the outer surface of the second pulley bar 332 to disengage from the inner side of the fixing piece 331, so that the first pulley bar 33 and the second pulley bar 332 rotate towards both sides, prompting the bottom of the square frame 1 to contact the ground, effectively fixing the demagnetization device, and enabling the device to quickly switch between fixation and movement.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A demagnetization treatment device for the negative electrode material of a lithium battery, comprising a square frame (1), a material leakage bin (11) is fixedly connected to the center of the top of the square frame (1), an electromagnetic coil (12) is arranged on the outer surface of the bottom of the material leakage bin (11), a discharge pipe (13) is fixedly penetrated through the bottom of the electromagnetic coil (12), and a servo cylinder (14) is fixedly connected to the outer surface of the discharge pipe (13), characterized in that, A plurality of loading bins are slidably connected to the inner side of the bottom of the square frame (1). A plurality of magnetic conduction nets are arranged at the center inside the electromagnetic coil (12). A guide plate for controlling and switching the discharge is arranged inside the discharge pipe (13). The output end of the servo cylinder (14) is rotatably connected to the guide plate inside the discharge pipe (13). A splash-proof stirring mechanism (2) is arranged at the top of the square frame (1). An automatic pushing mechanism (3) is arranged at the bottom of the discharge pipe (13). The splash-proof stirring mechanism (2) is used to increase the fluidity of the negative electrode material when pouring the negative electrode material into the leakage bin (11). The automatic pushing mechanism (3) is used to urge the loading bin at the bottom to move forward when the servo cylinder (14) drives the discharge pipe (13) to switch channels.

2. The demagnetization treatment device for a lithium battery anode material according to claim 1, wherein, Support bars (21) are symmetrically and fixedly connected to the upper surface of the square frame (1). Square grooves are formed through the outer surfaces of the support bars (21). Arc grooves are formed through the outer surfaces of the support bars (21) on the side close to the center of the square frame (1). Rocking rods (211) are rotatably connected to the inner sides of the tops of the support bars (21). Both ends of the rocking rods (211) penetrate through the inside of the support bars (21) and are fixedly connected with connecting bars (212). Swing bars (213) are fixedly connected to the tops of the connecting bars (212). Sliding blocks (214) are rotatably connected to the bottoms of the swing bars (213). One end of the sliding block (214) close to the swing bar (213) is slidably connected to the arc groove on the outer surface of the support bar (21). The side of the sliding block (214) away from the swing bar (213) is slidably connected to the square groove on the outer surface of the support bar (21). Trapezoidal blocks (215) are slidably connected to the bottoms of the sliding blocks (214). The side of the trapezoidal block (215) away from the rocking rod (211) is slidably connected to the inner side of the support bar (21). First springs (216) are fixedly connected to the bottoms of the trapezoidal blocks (215). The bottoms of the first springs (216) are fixedly connected to the bottoms of the inner sides of the support bars (21).

3. The demagnetization treatment device for a lithium battery anode material according to claim 2, characterized in that A sealing cover (22) is fixedly connected to the top of the sliding block (214). A servo motor (221) is fixedly connected to the center of the upper surface of the sealing cover (22). A first conical wheel (222) is fixedly connected to the output shaft of the servo motor (221). A U-shaped frame (223) is rotatably connected to the outer surface of the output shaft of the servo motor (221) on the side away from the first conical wheel (222). A second conical tooth (224) is rotatably connected to the middle of the U-shaped frame (223). The outer surface of the second conical tooth (224) is meshed with the outer surface of the first conical wheel (222). A third conical tooth (225) is meshed with the outer surface of the second conical tooth (224) on the side away from the first conical wheel (222). The center of the third conical tooth (225) is rotatably connected to the outer surface of the output shaft of the servo motor (221).

4. The demagnetization treatment device for the negative electrode material of a lithium battery according to claim 3, characterized in that, One side of the U-shaped frame (223) close to the third conical tooth (225) is rotatably connected to the outer surface of the bottom of the third conical tooth (225). The bottom of the output shaft of the servo motor (221) is fixedly connected with a first stirring plate (226). The bottom of the third conical tooth (225) is fixedly connected with a second stirring plate (227). The center of the second stirring plate (227) is sleeved on the outer surface of the output shaft of the servo motor (221).

5. The demagnetization treatment device for the negative electrode material of a lithium battery according to claim 1, wherein The bottom of the output shaft of the servo cylinder (14) is fixedly connected with a rack (31). The outer surface of the rack (31) is engaged with a gear (311). The outer surface of the gear (311) is rotatably connected to the outer surface of the discharge pipe (13). The inside of the gear (311) is fixedly connected with a ratchet wheel (312). The inside of the ratchet wheel (312) is rotatably connected with a turntable (313). The center of the turntable (313) is fixedly connected with a rotating shaft. The rotating shaft inside the turntable (313) is rotatably connected to the outer surface of the discharge pipe (13). The outer surface of the turntable (313) is rotatably connected with an elastic piece (314). The top end of the elastic piece (314) is clamped inside the ratchet wheel (312).

6. The demagnetization treatment device for the anode material of a lithium battery according to claim 5, characterized in that, One side of the elastic piece (314) away from the discharge pipe (13) is fixedly connected with a rotating rod (32). The bottom of the rotating rod (32) is fixedly connected with a follower rod (321). The bottom of the follower rod (321) is rotatably connected with a sliding plate (322). The outer surface of the sliding plate (322) is slidably connected to the upper surface of the inner side of the bottom of the square frame (1).

7. The demagnetization treatment device for the negative electrode material of a lithium battery according to claim 6, characterized in that, One side of the sliding plate (322) away from the follower rod (321) is rotatably connected with a wedge block (323). The bottom of the wedge block (323) is clamped with a sliding strip (324). A plurality of direction holes are linearly formed through the upper surface of the sliding strip (324). The bottom of the sliding strip (324) is slidably connected to the upper surface of the inner side of the bottom of the square frame (1). One side of the sliding strip (324) away from the follower rod (321) is fixedly connected with a pushing strip (325). The side of the pushing strip (325) away from the sliding strip (324) is slidably connected to the upper surface of the inner side of the bottom of the square frame (1).

8. The demagnetization treatment device for a lithium battery anode material according to claim 7, characterized in that, The inner side of the bottom of the square frame (1) is rotatably connected with a first pulley strip (33). The outer surface of the first pulley strip (33) is rotatably connected with a fixing piece (331). The bottom of the first pulley strip (33) is attached to a second pulley strip (332). One end of the second pulley strip (332) away from the first pulley strip (33) is rotatably connected to the inner side of the bottom of the square frame (1). The outer surface of the second pulley strip (332) is fixedly connected with a cylindrical protrusion. The cylindrical protrusion on the outer surface of the second pulley strip (332) is clamped inside the fixing piece (331). The outer surface of the fixing piece (331) is fixedly connected with a second spring (333). One side of the second spring (333) away from the fixing piece (331) is fixedly connected to the outer surface of the first pulley strip (33).

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