Equipment and process for separating and regenerating positive electrode material of retired lithium ion power battery

Abstract

The invention relates to the technical field of lithium battery recycling, in particular to equipment and a process for separating and regenerating a positive electrode material of a retired lithium ion power battery. The equipment comprises a shell, a feeding hopper is fixedly mounted at the upper end of the shell, a conveying belt is arranged on one side of the shell, a baking box is arranged on the outer side of one end of the conveying belt, and an inclined plate is obliquely arranged at the inner end of the shell; a solid-liquid mixture obtained after the positive electrode material of the retired lithium ion battery is crushed is discharged into the feeding hopper through an external conveying mechanism and then falls on the filter plate to be filtered, and the liquid positive electrode material penetrates through the filter plate, flows into the inner side of the lower end of the shell and then is discharged through the first water discharging pipe and collected. The solid granular positive electrode material at the upper end of the filter plate is quickly shaken into the first cylinder and discharged onto the conveying belt through the first packing auger and the second packing auger, so that the solid granular positive electrode material and the liquid positive electrode material are separated, and the device is simple in structure and convenient to maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery recycling, and specifically to equipment and technology for separating and regenerating positive electrode materials from retired lithium-ion power batteries. Background Art

[0002] Lithium-ion power batteries are high-energy-density batteries that primarily rely on the movement of lithium ions between the positive and negative electrodes. Because the positive electrode materials of lithium-ion power batteries have good thermal stability and safety, the positive electrode materials of retired lithium-ion power batteries are usually recycled.

[0003] In the prior art, in order to improve the recovery rate of lithium battery positive electrode materials, solid-liquid separation equipment is currently used for recycling. By mixing the waste lithium battery materials with an acid wash solution, the resulting solid positive electrode material precipitate is separated, and the solid precipitate is recovered by the solid-liquid separation equipment. For example, Chinese patent CN116672790A discloses a solid-liquid separation device for recycling lithium battery positive electrode materials, comprising a base, the upper surface of which is fixedly connected to two symmetrically arranged support seats, and the tops of the two support seats are vertically provided with recovery cylinders, and the recovery cylinders are provided with a separation mechanism for separating the solid and liquid of the lithium battery positive electrode materials; the present invention, by providing a separation mechanism, can move the liquid material toward the liquid outlet, and the fixed material is moved toward the discharge port under the action of the spiral blade, and finally flows through the discharge port to the screen plate for screening.

[0004] However, the separation structure of the above scheme is relatively complicated. When the equipment fails, it is inconvenient to quickly repair the equipment, which affects the separation efficiency. In addition, the solid positive electrode material particles after separation cannot be dried. The wet solid positive electrode material particles are still easy to agglomerate after being collected together, which affects subsequent processing. Summary of the Invention

[0005] The purpose of the present invention is to provide equipment and processes for separating and regenerating positive electrode materials of retired lithium-ion power batteries, so as to solve the problem raised in the above background technology that the existing solid-liquid separation is difficult to fully separate the solid positive electrode material precipitate and liquid, and the separated solid positive electrode material fixed liquid will form agglomerates after separation, making it difficult to carry out subsequent screening treatment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an apparatus for separating and regenerating positive electrode materials from retired lithium-ion power batteries, comprising: a housing, a feed hopper fixedly mounted on the upper end of the housing, a conveyor belt disposed on one side of the housing, a baking oven disposed on the outer side of one end of the conveyor belt, an inclined plate disposed at an angle at the inner end of the housing, one end of the inclined plate being rotatably connected to the inner wall of the housing via a shaft, a convex mounting groove formed at the upper end of the inclined plate, a filter plate mounted on the inner end of the mounting groove via a connecting component, and a vibration component installed between the other end of the inclined plate and the housing; A cylinder 1 is fixedly installed on one side of the inner end of the shell, a feed pipe is fixedly installed on one end of the cylinder 1, the lower end of the inclined plate is located in the feed pipe, a transfer box is fixedly installed on one side of the cylinder 1, and an auger 1 is connected to the cylinder 1 through the rotation of the motor 2; Two spreading plates are provided at the upper end of the conveyor belt. The lower end of the spreading plate does not contact the upper end of the conveyor belt. The spreading plate is located on one side of the discharge pipe and is in an outward-facing "X" shape. A flattening component is provided between the spreading plate and the baking oven.

[0007] Furthermore, the feed hopper is located on the upper side of the high end of the filter plate, and the lower port of the feed hopper is located on the inner side of the shell. The front and rear ends of the feed hopper are fixedly installed with connecting plates, and the other end of the connecting plate is fixed on the inner wall of the shell. The front and rear ends of the inclined plate are fixedly installed with side plates, and a drain pipe 1 is fixedly installed at the lower end of the shell. A cylinder 2 is fixedly installed on the outer wall of one end of the shell at an angle, and a number of circular holes are opened on the side wall of the cylinder 2. A cylinder 3 is fixedly installed on the outer end of the cylinder 2, and the inner end of the cylinder 2 is connected to the transfer box. An auger 2 is connected to the cylinder 2 through the rotation of the motor 3, and a drain pipe 2 is fixedly installed on the lower end of the cylinder 2. A discharge pipe is fixedly installed on the lower side of the upper end of the cylinder 2, and the discharge pipe is located on the other side of the upper end of the conveyor belt.

[0008] Furthermore, the connecting component includes a limiting groove 1 provided at one end of the mounting groove and a slide groove provided at the other end of the mounting groove, a slider is slidably connected in the slide groove, a traction rope is fixedly installed at the middle part of the inner end of the slider, one end of the traction rope slides out of the outer end of the inclined plate, a spring 1 is fixedly installed on both the front and rear sides of the inner end of the slider, the inner end of the spring 1 is fixedly installed on the inner wall of the slide groove, when the spring 1 is in a balanced state, the outer end of the slider is located outside the slide groove, a limiting groove 2 corresponding to the slider is provided at one end of the filter plate, and a protrusion corresponding to the limiting groove 1 is fixedly installed at the other end of the filter plate, the protrusion can be inserted into the limiting groove 1, and the slider can be slidably inserted into the limiting groove 2.

[0009] Furthermore, the vibration component includes a strip hole, a baffle, a movable plate and a rotating shaft. There are two strip holes, which are opened on the side wall of one end of the shell. The baffle is fixed at an angle on the inner wall of the shell and is located at the upper end of the strip hole. The movable plate is U-shaped. The two ends of the movable plate slide through the two strip holes respectively and are fixedly connected to the outer end of the inclined plate. The rotating shaft is rotatably connected to the outer wall of one end of the shell through the ear plate, and an eccentric wheel is fixedly installed on the outer wall of the rotating shaft, and the protruding end of the eccentric wheel can contact the lower end of the movable plate.

[0010] Furthermore, a motor 1 is provided on one side of the rotating shaft, and the motor 1 is fixedly mounted on the outer wall of the shell, and the output end of the motor 1 is fixedly connected to one end of the rotating shaft through a coupling, and a fixed plate is fixedly mounted on the outer wall of one end of the upper end shell of the movable plate, and the fixed plate is located above the movable plate, and a spring 2 is fixedly mounted between the fixed plate and the movable plate.

[0011] Furthermore, a round rod is fixedly mounted on the upper end of each of the spreading plates, a support plate is fixedly mounted on the upper end of the round rod, and one end of the support plate is fixed on the outer wall of the shell.

[0012] Furthermore, the flattening component includes two support frames, which are U-shaped and located on the outside of the conveyor belt. A connecting plate is fixedly installed between the two support frames, a motor four is fixedly installed on the lower side of one end of the connecting plate, a turntable is fixedly installed on the output end of the motor four, a brush is fixedly bonded to the lower end of the turntable, a fixed cylinder is fixedly installed on the other side of the lower end of the connecting plate, the lower end of the fixed cylinder is slidably connected to the moving cylinder, the lower end of the fixed cylinder is threadedly connected to a hand bolt, the inner end of the hand bolt can contact the outer wall of the moving cylinder, a horizontal plate is fixedly installed on the lower end of the moving cylinder, and a scraper is fixedly installed on the lower end of the horizontal plate.

[0013] A process for separating and regenerating positive electrode materials from retired lithium-ion power batteries comprises the following steps: The solid-liquid mixture of the crushed retired lithium-ion battery positive electrode material is discharged into the feed hopper and then falls on the filter plate for filtration. The liquid positive electrode material passes through the filter plate and flows into the lower end inner side of the shell, and then is discharged and collected through the drain pipe; The solid granular positive electrode material enters the cylinder 1 through the filter plate and the feed pipe, and is transferred to the transfer box through the auger 1. Then, the solid granular positive electrode material is transferred to the upper end of the cylinder 2 through the auger 2 and discharged to the conveyor belt through the discharge pipe. When conveying the solid granular positive electrode material, the conveyor belt passes through the lower ends of the two spreading plates, which initially flatten the solid granular positive electrode material, and then pass through the flattening component to flatten the solid granular positive electrode material again; Finally, the flattened solid granular positive electrode material is dried in a baking oven, and a collection bucket is placed on the lower side of the outer end of the conveyor belt to collect the dried solid granular positive electrode material for subsequent use.

[0014] Furthermore, the motor drives the rotating shaft to rotate, and the rotating shaft drives the eccentric wheel and the lower end of the movable plate to reciprocate, lift the inclined plate and the filter plate reciprocatingly, and quickly shake the solid granular positive electrode material on the upper end of the filter plate into the cylinder one.

[0015] Furthermore, a cleaning nozzle is fixedly installed on the outer wall of the cylinder three. When the auger two transports the solid granular positive electrode material, the cleaning nozzle cleans the solid granular positive electrode material, and the cleaned liquid is discharged and collected through the drain pipe two.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The solid-liquid mixture of the crushed retired lithium-ion battery positive electrode material is discharged into the feed hopper through an external conveying mechanism, and then falls on the filter plate for filtration. The liquid positive electrode material passes through the filter plate and flows into the inner side of the lower end of the shell, and is then discharged and collected through the drain pipe. The solid granular positive electrode material on the upper end of the filter plate is quickly shaken into the cylinder 1, and is discharged onto the conveyor belt through the auger 1 and the auger 2, thereby separating the solid granular positive electrode material from the liquid positive electrode material. The structure is simple and easy to maintain. The cleaning nozzle cleans the solid granular positive electrode material in the second cylinder, the spreading plate initially flattens the solid granular positive electrode material, and the flattening component flattens the solid granular positive electrode material again to make its thickness uniform. The flattened solid granular positive electrode material is dried in a baking oven, and a collection bucket is placed on the lower side of the outer end of the conveyor belt to collect the dried solid granular positive electrode material, completing the cleaning and drying of the solid granular positive electrode material to avoid agglomeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the back of the overall structure of the present invention; Figure 3 This is a schematic diagram of the inner end structure of the shell of the present invention; Figure 4 Schematic diagram of the cross section of the shell of the present invention; Figure 5 For the present invention Figure 3 A magnified view of the structure of the middle A area; Figure 6 This is a schematic diagram of the connecting structure 1 of the inclined plate and cylinder 1 and cylinder 2 of the present invention; Figure 7 This is a schematic diagram of the second connection structure of the inclined plate and cylinder 1 and cylinder 2 of the present invention; Figure 8 Schematic diagram of the cross-sectional structure of the inclined plate and filter plate of the present invention; Figure 9 Schematic diagram of the cross-sectional structure of cylinder 2 and cylinder 3 of the present invention; Figure 10 For the present invention Figure 8 A magnified view of the structure of the middle B region; Figure 11 This is a schematic diagram of the outer end structure of the conveyor belt of the present invention; Figure 12 This is a bottom view of the flattened component structure of the present invention.

[0018] In the figure: 1. Shell; 2. Inclined plate; 3. Side plate; 4. Strip hole; 5. Shielding plate; 6. Moving plate; 7. Filter plate; 8. Mounting slot; 9. Limiting slot 1; 10. Slide slot; 11. Slider; 12. Spring 1; 13. Traction rope; 14. Bump; 15. Limiting slot 2; 16. Rotating shaft; 17. Eccentric wheel; 18. Motor 1; 19. Cylinder 1; 20. Feed pipe; 21. Motor 2; 22. Transfer box; 23. Auger 1; 24. Drain pipe 1; 25. Fixed plate; 26. Spring 2; 27. Feed hopper; 28. Connecting plate; 29. ​​Cylinder 2; 30. Motor 3; 31. Cylinder 3; 32. Round hole; 33. Auger 2; 34. Drain pipe 2; 35. Discharge pipe; 36. Conveyor belt; 37. Support plate; 38. Round rod; 39. Spreading plate; 40. Support frame; 41. Connecting plate; 42. Motor 4; 43. Turntable; 44. Brush; 45. Fixed cylinder; 46. Moving cylinder; 47. Horizontal plate; 48. Thumb bolt; 49. Scraper; 50. Baking oven. DETAILED DESCRIPTION

[0019] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 12 The present invention provides a technical solution: an apparatus for separating and regenerating positive electrode materials of retired lithium-ion power batteries, comprising: a shell 1, a feed hopper 27 is fixedly installed on the upper end of the shell 1, the feed hopper 27 is located on the upper side of the high end of the filter plate 7, the upper port of the feed hopper 27 is larger than the lower port, the lower port of the feed hopper 27 is located on the inner side of the shell 1, the front and rear ends of the feed hopper 27 are fixedly installed with a connecting plate 28, the other end of the connecting plate 28 is fixed on the inner wall of the shell 1, the feed hopper 27 is fixed on the upper side of the higher end of the filter plate 7, the front and rear ends of the inclined plate 2 are fixedly installed with a side plate 3, the inclined plate 2 and the side plate 3 It is U-shaped to prevent solid particles of retired lithium-ion power battery positive electrode materials from leaking from the front and rear sides of the upper end of the inclined plate 2. A drain pipe 24 is fixedly installed at the lower end of the shell 1. The drain pipe 24 is connected to the inner end of the shell 1 to drain and collect the liquid positive electrode material. A conveyor belt 36 is provided on one side of the shell 1, and a baking oven 50 is provided on the outer side of one end of the conveyor belt 36. The conveyor belt 36 and the baking oven 50 are both existing mature technologies, so they will not be described in detail here. The conveyor belt 36 transports the solid granular positive electrode material and passes through the baking oven 50, and the baking oven 50 bakes it dry.

[0021] The inner end of the shell 1 is obliquely provided with an inclined plate 2, one end of the inclined plate 2 is rotatably connected to the inner wall of the shell 1 through a shaft, and the other end of the inclined plate 2 can be rotated with the shaft as the center of the circle. A mounting groove 8 is provided at the upper end of the inclined plate 2, and the mounting groove 8 is convex. A filter plate 7 is installed at the inner end of the mounting groove 8 through a connecting component, and the filter plate 7 is located in the mounting groove 8, so that the filter plate 7 is obliquely installed at the inner end of the shell 1, and the connecting component includes a limiting groove 9 provided at one end of the mounting groove 8 and a slide groove 10 provided at the other end of the mounting groove 8. A slider 11 is slidably connected in the slide groove 10, and a traction rope 13 is fixedly installed at the middle part of the inner end of the slider 11. One end of the traction rope 13 slides out of the outer end of the inclined plate 2, and the outer end of the traction rope 13 is attached to the inner wall of the shell 1 and tied to one side of the upper end of the shell 1. , and the traction rope 13 is not straightened, so that the filter plate 7 and the inclined plate 2 can rotate in the shell 1, and the traction rope 13 is located on the outside of the lower port of the feed hopper 27, and the solid granular positive electrode material will not contact the traction rope 13 when falling. The front and rear sides of the inner end of the slider 11 are fixedly installed with springs 12, and the inner end of the spring 12 is fixedly installed on the inner wall of the slide 10. When the spring 12 is in a balanced state, the outer end of the slider 11 is located on the outside of the slide 10, and the upper end of the slider 11 is provided with a slope. One end of the filter plate 7 is provided with a limiting groove 2 15 corresponding to the slider 11, and the other end of the filter plate 7 is fixedly installed with a protrusion 14 corresponding to the limiting groove 19. The protrusion 14 can be inserted into the limiting groove 19, and the slider 11 can be slidably inserted into the limiting groove 2 15 to fix the filter plate 7.

[0022] Specifically, when the filter plate 7 needs to be installed, the protrusion 14 at one end of the filter plate 7 is inserted into the limiting groove 1 9, and then the other end of the filter plate 7 is pressed down, the filter plate 7 contacts the slope of the upper end of the slider 11, and the slider 11 is pushed into the slide groove 10. When the slider 11 is located at the outer end of the limiting groove 2 15, the outer end of the slider 11 is inserted into the limiting groove 2 15 under the rebound force of the spring 1 12 to fix the filter plate 7. When the filter plate 7 needs to be replaced after a period of use, the slider 11 is moved inward by pulling the traction rope 13, and the filter plate 7 can be taken out from the installation groove 8, which is convenient for disassembly and replacement of the filter plate 7.

[0023] A vibration component is installed between the other end of the inclined plate 2 and the shell 1, and the vibration component includes a strip hole 4, a baffle 5, a movable plate 6 and a rotating shaft 16. There are two strip holes 4, which are opened on the side wall of one end of the shell 1. The baffle 5 is tilted and fixed on the inner wall of the shell 1 and is located at the upper end of the strip hole 4 to prevent the liquid positive electrode material from leaking from the strip hole 4. The movable plate 6 is U-shaped, and the two ends of the movable plate 6 slide through the two strip holes 4 respectively and are fixedly connected to the outer end of the inclined plate 2. The rotating shaft 16 is rotatably connected to the outer wall of one end of the shell 1 through the ear plate, and an eccentric wheel 17 is fixedly installed on the outer wall of the rotating shaft 16. The protruding end of the eccentric wheel 17 can contact the lower end of the movable plate 6. When the rotating shaft 16 drives the eccentric wheel 17 to rotate, the protruding part of the eccentric wheel 17 contacts the lower end of the movable plate 6, and the movable plate 6, the inclined plate 2 and the filter plate 7 are pushed upward.

[0024] A motor 18 is provided on one side of the rotating shaft 16. The motor 18 is fixedly mounted on the outer wall of the shell 1, and the output end of the motor 18 is fixedly connected to one end of the rotating shaft 16 through a coupling. A fixed plate 25 is fixedly mounted on the outer wall of one end of the upper shell 1 of the movable plate 6. The fixed plate 25 is located above the movable plate 6. A spring 26 is fixedly mounted between the fixed plate 25 and the movable plate 6. When the movable plate 6 is lifted by the eccentric wheel 17, the spring 26 is compressed. When the eccentric wheel 17 is not in contact with the movable plate 6, the spring 26 allows the movable plate 6 to quickly reset, and then the eccentric wheel 17 lifts the movable plate 6 again, thereby realizing the reciprocating up and down rotation of the movable plate 6 with the filter plate 7, and quickly shaking off the fixed positive electrode material particles on the filter plate 7.

[0025] Specifically, the motor 18 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the eccentric wheel 17 to reciprocate and contact the lower end of the movable plate 6, so as to lift the inclined plate 2 and the filter plate 7 reciprocatingly, and quickly shake the solid granular positive electrode material on the upper end of the filter plate 7 into the cylinder 19.

[0026] A cylinder 19 is fixedly installed on one side of the inner end of the shell 1, and a feed pipe 20 is fixedly installed on one end of the cylinder 19. The lower end of the inclined plate 2 is located in the feed pipe 20, and the inclined plate 2 does not contact the inner walls of the upper and lower ends of the feed pipe 20, so that the lower end of the inclined plate 2 can rotate up and down in a small range in the feed pipe 20. A transfer box 22 is fixedly installed on one side of the cylinder 19. The upper end of the transfer box 22 is connected to the cylinder 19, and a drainage hole is provided at the bottom end of the transfer box 22 to discharge the liquid positive electrode material entering. The cylinder 19 is connected to an auger 23 through the rotation of the motor 21. The motor 21 is started to drive the auger 23 to rotate, and the fixed positive electrode material particles are transported to the transfer box 22. The shell A cylinder 29 is fixedly installed on the outer wall of one end of the body 1 at an angle, and a plurality of circular holes 32 are opened on the side wall of the cylinder 29. A cylinder 31 is fixedly installed on the outer end of the cylinder 29. The inner end of the cylinder 29 is connected to the transfer box 22. The cylinder 29 is connected to the auger 2 33 which is rotated by the motor 30. The lower end of the cylinder 31 is fixedly installed with a drain pipe 2 34. A discharge pipe 35 is fixedly installed on the lower side of the upper end of the cylinder 29. The discharge pipe 35 is located on the other side of the upper end of the conveyor belt 36. By starting the motor 30 to drive the auger 2 33 to rotate, the fixed positive electrode material particles in the transfer box 22 are transported to the upper end of the cylinder 29 and discharged to the upper end of the conveyor belt 36 through the discharge pipe 35.

[0027] Specifically, a cleaning nozzle is fixedly installed on the outer wall of cylinder three 31, and the cleaning nozzle is connected to an external water pipe. The cleaning nozzle is located on the upper side of the upper end of cylinder two 29. The water sprayed by the cleaning nozzle enters cylinder two 29 through the circular hole 32, and cleans the solid granular positive electrode material transported by auger two 33. The liquid after cleaning leaks out from the circular hole 32 at the lower end, and is then discharged and collected through drain pipe two 34.

[0028] Two spreading plates 39 are provided at the upper end of the conveyor belt 36. The lower ends of the spreading plates 39 do not contact the upper end of the conveyor belt 36. The spreading plates 39 are located on one side of the discharge pipe 35 and are in an outward-facing "X" shape. A round rod 38 is fixedly installed on the upper end of each spreading plate 39. A support plate 37 is fixedly installed on the upper end of the round rod 38. One end of the support plate 37 is fixed on the outer wall of the shell 1. When the conveyor belt 36 conveys solid granular positive electrode materials, it passes through the lower ends of the two spreading plates 39. The spreading plates 39 preliminarily spread the solid granular positive electrode materials.

[0029] A flattening component is provided between the spreading plate 39 and the baking oven 50, and the flattening component includes two support frames 40, the support frame 40 is U-shaped, and the support frame 40 is located on the outside of the conveyor belt 36. A connecting plate 41 is fixedly installed between the two support frames 40, and a motor 42 is fixedly installed on the lower side of one end of the connecting plate 41. A turntable 43 is fixedly installed on the output end of the motor 42, and a brush 44 is fixedly bonded to the lower end of the turntable 43. The lower end of the brush 44 contacts the upper surface of the conveyor belt 36. When the motor 42 is started, the turntable 43 is driven to rotate, and the turntable 43 rotates with the brush 44 and the solid granular positive electrode passing on the conveyor belt 36 is pressed. The material is leveled, and a fixed cylinder 45 is fixedly installed on the other side of the lower end of the connecting plate 41. The lower end of the fixed cylinder 45 is slidably connected to a moving cylinder 46. The lower end of the fixed cylinder 45 is threadedly connected to a hand-tightening bolt 48. The inner end of the hand-tightening bolt 48 can contact the outer wall of the moving cylinder 46. A horizontal plate 47 is fixedly installed on the lower end of the moving cylinder 46, and a scraper 49 is fixedly installed on the lower end of the horizontal plate 47. The scraper 49 is a rubber plate. The distance between the scraper 49 and the upper end of the conveyor belt 36 is smaller than the distance between the spreading plate 39 and the upper end of the conveyor belt 36. The solid granular positive electrode material after leveling is leveled again to make its thickness uniform, which is convenient for drying.

[0030] In actual use, the solid-liquid mixture of the crushed retired lithium-ion battery positive electrode material is discharged into the feed hopper 27 through an external transmission mechanism, and then falls on the filter plate 7 for filtration. The liquid positive electrode material passes through the filter plate 7 and flows into the inner side of the lower end of the shell 1, and is then discharged and collected through the drain pipe 24. At the same time, the motor 18 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the eccentric wheel 17 to reciprocate with the lower end of the moving plate 6, and the inclined plate 2 and the filter plate 7 are reciprocally lifted, so that the solid on the upper end of the filter plate 7 is removed. The granular positive electrode material is quickly shaken into the cylinder 19, and the motor 21 drives the auger 1 23 to rotate, transferring the solid granular positive electrode material to the transfer box 22. The solid granular positive electrode material is then transferred to the upper end of the cylinder 29 by the auger 2. At the same time, the solid granular positive electrode material is cleaned by the cleaning nozzle and discharged to the conveyor belt 36 through the discharge pipe 35, separating the solid granular positive electrode material from the liquid positive electrode material. The structure is simple and easy to maintain. Then the conveyor belt 36 conveys the solid granular positive electrode material to one side of the baking oven 50, and the solid granular positive electrode material passes through the lower ends of the two spreading plates 39. The spreading plates 39 preliminarily flatten the solid granular positive electrode material. The motor 42 drives the turntable 43 with the brush 44 to rotate, and sweeps the solid granular positive electrode material passing on the conveyor belt 36, and then flattens the solid granular positive electrode material again through the flattening component. Then the scraper 49 scrapes the flattened solid granular positive electrode material again to make its thickness uniform. The flattened solid granular positive electrode material is dried in the baking oven 50, and a collection bucket is placed on the lower side of the outer end of the conveyor belt 36 to collect the dried solid granular positive electrode material to avoid agglomeration for subsequent use.

[0031] Example 2: The present invention provides a technical solution: a process for separating and regenerating positive electrode materials of retired lithium-ion power batteries, which specifically includes the following steps: First, the solid-liquid mixture of the crushed retired lithium-ion battery positive electrode material is discharged into the feed hopper 27, and then falls on the filter plate 7 for filtration. The liquid positive electrode material passes through the filter plate 7 and flows into the inner side of the lower end of the housing 1, and is then discharged and collected through the drain pipe 24. Next, the motor 18 drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the eccentric wheel 17 to reciprocate with the lower end of the movable plate 6, and lifts the inclined plate 2 and the filter plate 7 back and forth, and quickly shakes the solid granular positive electrode material on the upper end of the filter plate 7 into the cylinder 19, and is transferred to the transfer box 22 through the auger 23; Then, the solid granular positive electrode material is transferred to the upper end of the second cylinder 29 by the second auger 33, and the cleaning nozzle cleans the solid granular positive electrode material. The cleaned liquid is discharged and collected through the second drain pipe 34 and discharged to the conveyor belt 36 through the discharge pipe 35; Finally, when the conveyor belt 36 transports the solid granular positive electrode material, the solid granular positive electrode material passes through the lower ends of the two spreading plates 39, and the spreading plates 39 initially flatten the solid granular positive electrode material, and then the solid granular positive electrode material is flattened again by the flattening component. The flattened solid granular positive electrode material is dried in the baking oven 50, and a collection bucket is placed on the lower side of the outer end of the conveyor belt 36 to collect the dried solid granular positive electrode material, thereby completing the separation of the solid granular positive electrode material and the liquid positive electrode material, and cleaning and drying the solid granular positive electrode material to avoid agglomeration.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. Equipment for separating and regenerating cathode materials from retired lithium-ion power batteries, including: A shell (1), a feed hopper (27) is fixedly installed on the upper end of the shell (1), a conveyor belt (36) is provided on one side of the shell (1), and a baking oven (50) is provided on the outer side of one end of the conveyor belt (36), characterized in that: an inclined plate (2) is obliquely provided on the inner end of the shell (1), one end of the inclined plate (2) is rotatably connected to the inner wall of the shell (1) through a shaft, a mounting groove (8) is provided on the upper end of the inclined plate (2), the mounting groove (8) is convex, a filter plate (7) is installed on the inner end of the mounting groove (8) through a connecting component, and a vibration component is installed between the other end of the inclined plate (2) and the shell (1); A cylinder (19) is fixedly mounted on one side of the inner end of the housing (1), a feed pipe (20) is fixedly mounted on one end of the cylinder (19), the lower end of the inclined plate (2) is located in the feed pipe (20), a transfer box (22) is fixedly mounted on one side of the cylinder (19), and an auger (23) is connected to the cylinder (19) for rotation via a motor (21); Two spreading plates (39) are provided at the upper end of the conveyor belt (36), the lower ends of the spreading plates (39) do not contact the upper end of the conveyor belt (36), the spreading plates (39) are located on one side of the discharge pipe (35) and are in an outward-facing "X" shape, and a flattening component is provided between the spreading plates (39) and the baking box (50).

2. The device for separating and regenerating positive electrode materials of retired lithium-ion power batteries according to claim 1, characterized in that: The feed hopper (27) is located on the upper side of the high end of the filter plate (7), and the lower port of the feed hopper (27) is located on the inner side of the shell (1). The front and rear ends of the feed hopper (27) are fixedly mounted with a connecting plate (28), and the other end of the connecting plate (28) is fixedly mounted on the inner wall of the shell (1). The front and rear ends of the inclined plate (2) are fixedly mounted with a side plate (3). The lower end of the shell (1) is fixedly mounted with a drain pipe (24). The outer wall of one end of the shell (1) is fixedly mounted with a cylinder (29). The cylinder (2) A plurality of circular holes (32) are provided on the side wall of the cylinder 2 (29), the outer end of the cylinder 2 (29) is fixedly mounted with the cylinder 3 (31), the inner end of the cylinder 2 (29) is connected to the transfer box (22), the cylinder 2 (29) is connected to the auger 2 (33) through the motor 3 (30), the lower end of the cylinder 3 (31) is fixedly mounted with the drain pipe 2 (34), the lower side of the upper end of the cylinder 2 (29) is fixedly mounted with a discharge pipe (35), and the discharge pipe (35) is located on the other side of the upper end of the conveyor belt (36).

3. The device for separating and regenerating positive electrode materials of retired lithium-ion power batteries according to claim 2, characterized in that: The connecting component includes a limiting groove 1 (9) provided at one end of the installation groove (8) and a slide groove (10) provided at the other end of the installation groove (8), a slider (11) is slidably connected in the slide groove (10), a traction rope (13) is fixedly installed in the middle part of the inner end of the slider (11), one end of the traction rope (13) slides through the outer end of the inclined plate (2), a spring 1 (12) is fixedly installed on both the front and rear sides of the inner end of the slider (11), the inner end of the spring 1 (12) is fixedly installed on the inner wall of the slide groove (10), when the spring 1 (12) is in a balanced state, the outer end of the slider (11) is located outside the slide groove (10), a limiting groove 2 (15) corresponding to the slider (11) is provided at one end of the filter plate (7), a protrusion (14) corresponding to the limiting groove 1 (9) is fixedly installed at the other end of the filter plate (7), the protrusion (14) can be inserted into the limiting groove 1 (9), and the slider (11) can be slidably inserted into the limiting groove 2 (15).

4. The device for separating and regenerating cathode materials from retired lithium-ion power batteries according to claim 1, characterized in that: The vibration component comprises a strip hole (4), a shielding plate (5), a movable plate (6) and a rotating shaft (16). Two strip holes (4) are provided and are opened on the side wall of one end of the shell (1). The shielding plate (5) is tilted and fixed on the inner wall of the shell (1) and is located at the upper end of the strip hole (4). The movable plate (6) is U-shaped. The two ends of the movable plate (6) slide through the two strip holes (4) and are fixedly connected to the outer end of the inclined plate (2). The rotating shaft (16) is rotatably connected to the outer wall of one end of the shell (1) through the ear plate. The outer wall of the rotating shaft (16) is fixedly mounted with an eccentric wheel (17). The protruding end of the eccentric wheel (17) can contact the lower end of the movable plate (6).

5. The device for separating and regenerating cathode materials from retired lithium-ion power batteries according to claim 4, characterized in that: A motor 1 (18) is provided on one side of the rotating shaft (16). The motor 1 (18) is fixedly mounted on the outer wall of the housing (1), and the output end of the motor 1 (18) is fixedly connected to one end of the rotating shaft (16) through a coupling. A fixed plate (25) is fixedly mounted on the outer wall of one end of the housing (1) at the upper end of the movable plate (6). The fixed plate (25) is located above the movable plate (6), and a spring 2 (26) is fixedly mounted between the fixed plate (25) and the movable plate (6).

6. The device for separating and regenerating positive electrode materials of retired lithium-ion power batteries according to claim 1, characterized in that: A round rod (38) is fixedly mounted on the upper end of each spreading plate (39), a support plate (37) is fixedly mounted on the upper end of the round rod (38), and one end of the support plate (37) is fixed on the outer wall of the housing (1).

7. The device for separating and regenerating positive electrode materials of retired lithium-ion power batteries according to claim 1, characterized in that: The flattening component includes two support frames (40), the support frames (40) are U-shaped, and the support frames (40) are located outside the conveyor belt (36). A connecting plate (41) is fixedly installed between the two support frames (40), a motor four (42) is fixedly installed on the lower side of one end of the connecting plate (41), a turntable (43) is fixedly installed on the output end of the motor four (42), a brush (44) is fixedly bonded to the lower end of the turntable (43), a fixed cylinder (45) is fixedly installed on the other side of the lower end of the connecting plate (41), the lower end of the fixed cylinder (45) is slidably connected to the moving cylinder (46), the lower end of the fixed cylinder (45) is threadedly connected to a hand screw bolt (48), the inner end of the hand screw bolt (48) can contact the outer wall of the moving cylinder (46), the lower end of the moving cylinder (46) is fixedly installed with a horizontal plate (47), and the lower end of the horizontal plate (47) is fixedly installed with a scraper (49).

8. A process for separating and regenerating cathode materials from retired lithium-ion power batteries according to any one of claims 1 to 7, characterized in that: The specific steps include: The solid-liquid mixture of the crushed retired lithium-ion battery positive electrode material is discharged into the feed hopper (27), and then falls on the filter plate (7) for filtration. The liquid positive electrode material passes through the filter plate (7) and flows into the inner side of the lower end of the shell (1), and is then discharged and collected through the drain pipe (24). The solid granular positive electrode material enters the cylinder 1 (19) through the filter plate (7) and the feed pipe (20), and is transferred to the transfer box (22) through the auger 1 (23), and then is transferred to the upper end of the cylinder 2 (29) through the auger 2 (33) and discharged to the conveyor belt (36) through the discharge pipe (35); When conveying the solid granular positive electrode material, the conveyor belt (36) passes through the lower ends of the two spreading plates (39), and the spreading plates (39) initially flatten the solid granular positive electrode material, and then pass through the flattening component to flatten the solid granular positive electrode material again; Finally, the flattened solid granular positive electrode material is dried in a baking oven (50), and a collection bucket is placed on the lower side of the outer end of the conveyor belt (36) to collect the dried solid granular positive electrode material for subsequent use.

9. The process of the equipment for separating and regenerating positive electrode materials of retired lithium-ion power batteries according to claim 8, characterized in that: The motor 1 (18) drives the rotating shaft (16) to rotate, and the rotating shaft (16) drives the eccentric wheel (17) and the lower end of the movable plate (6) to reciprocate, and lift the inclined plate (2) and the filter plate (7) reciprocatingly, and quickly shake the solid granular positive electrode material on the upper end of the filter plate (7) into the cylinder 1 (19).

10. The process of the equipment for separating and regenerating positive electrode materials of retired lithium-ion power batteries according to claim 9, characterized in that: A cleaning nozzle is fixedly mounted on the outer wall of the cylinder three (31). When the auger two (33) conveys the solid granular positive electrode material, the cleaning nozzle cleans the solid granular positive electrode material, and the cleaned liquid is discharged and collected through the drain pipe two (34).

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