Method for recycling positive electrode material in automobile waste lithium iron phosphate battery

Abstract

The application discloses a recovery method for positive electrode material in a waste automobile lithium iron phosphate battery, and a device used in the method comprises an extraction cabin, a sliding cabin mechanism arranged in the extraction cabin, a crushing mechanism arranged in the extraction cabin, and a reaction mechanism arranged in the extraction cabin, wherein the sliding cabin mechanism comprises sliding blocks, horizontal sliding columns, a pushing frame, a driving column, a cabin frame and a ventilation rod, the sliding blocks are fixedly connected to the outer wall of the extraction cabin, the pushing frame is slidably connected to the inner wall of the cabin frame, the sliding mouth is slidably connected to the outer wall of the cabin frame, the reciprocating lead screw is rotatably connected to the inner wall of the extraction cabin, and a motor is arranged on the left part of the reciprocating lead screw. In the process that the reciprocating horizontal frame moves reciprocatingly, the vertical swing plate is driven to move reciprocatingly, the vertical swing plate disperses steam in the moving process, the steam is more uniformly heated to the battery above, and therefore the steam heating effect of the device is improved.

Description

Technical Field

[0001] This invention belongs to the field of used battery refining, specifically relating to a method for recycling positive electrode materials from waste lithium iron phosphate batteries used in automobiles. Background Technology

[0002] Recycling of used battery cathode materials is a core step in extracting key metal resources such as lithium, cobalt, and nickel. Through processes such as dismantling, heat treatment, and selective leaching, valuable components in failed cathode materials are efficiently separated and regenerated. Modern technologies emphasize green hydrometallurgy and short-process targeted repair, aiming to reduce energy consumption and environmental impact, alleviate resource constraints, and support the sustainable development of the new energy vehicle industry chain.

[0003] Patent CN118380676A discloses a method for the resource recycling of waste lithium iron phosphate batteries. The method includes the following steps: 1) crushing the waste lithium iron phosphate material from the waste lithium iron phosphate batteries to obtain waste powder; 2) mixing the waste powder with an organic solvent and water, ultrasonicating, and allowing it to stand and separate into layers, from top to bottom: a water layer, a lithium iron phosphate cathode material layer, an organic solvent layer, and other impurity layers; separating the lithium iron phosphate cathode material layer to recover the lithium iron phosphate cathode material. The present invention provides a resource recovery method for waste lithium iron phosphate batteries. Utilizing the property differences between lithium iron phosphate, impurities, and solvents, and through simple ultrasonic and static treatment, lithium iron phosphate and impurities are dispersed and separated into layers in different solutions, thus achieving the recovery of lithium iron phosphate cathode material. The steps are simple, and the recovery rate and purity of lithium iron phosphate cathode material are high. Although this device solves the aforementioned problems, the existing conventional heating steps still suffer from low heat transfer efficiency when heating the battery, thus affecting the subsequent battery purification efficiency. Therefore, a method for recovering cathode material from waste automotive lithium iron phosphate batteries is proposed to solve the aforementioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a method for recycling positive electrode materials from spent lithium iron phosphate batteries from automobiles, in order to solve the problem that the removal rate of gel-like substances in conventional battery heating and purification is not high, thus affecting the purification of effective battery materials.

[0005] To achieve the above objectives, the present invention provides a method for recycling positive electrode materials from waste lithium iron phosphate batteries of automobiles. The apparatus used includes: a refining chamber, wherein a sliding chamber mechanism is provided inside the refining chamber, a crushing mechanism is provided inside the refining chamber, and a reaction mechanism is provided inside the refining chamber. The slide mechanism includes a sliding block, a horizontal sliding column, a pusher, a drive column, a slide frame, and a venting rod. The sliding block is fixedly connected to the outer wall of the refining chamber. The horizontal sliding column is slidably connected to the inner wall of the sliding block. The pusher is fixedly connected to the right side of the pusher. The drive column is fixedly connected to the inner wall of the pusher. The slide frame is fixedly connected to the left side of the drive column. The slide frame is slidably connected to the inner wall of the refining chamber. The venting rod is fixedly connected to the inner wall of the refining chamber. The outer wall of the slide frame is in contact with the venting rod.

[0006] In one or more embodiments of the present invention, the skid mechanism further includes a venting groove, a torsion spring plate, and a horizontal limiting rod. The horizontal limiting rod is slidably connected to the outer wall of the drive column, the venting groove is formed on the bottom inner wall of the skid frame, and the torsion spring plate is rotatably connected to the outer wall of the skid frame via a torsion spring.

[0007] In one or more embodiments of the present invention, the slide mechanism further includes a push plate, a crossbar, a slag pusher plate, a sliding port, a reciprocating screw, a reciprocating crossbar, and a vertical swing plate. The push plate is fixedly connected to the outer wall of the horizontal limit bar, the crossbar is fixedly connected to the left side of the push plate, the circumferential surface of the crossbar is slidably connected to the inner wall of the slide frame, the slag pusher plate is fixedly connected to the left side of the crossbar, the slag pusher plate is slidably connected to the inner wall of the slide frame, the sliding port is slidably connected to the outer wall of the slide frame, the reciprocating screw is rotatably connected to the inner wall of the refining chamber, a motor is provided on the left side of the reciprocating screw, the reciprocating crossbar is slidably connected to the inner wall of the refining chamber, the reciprocating crossbar is movably connected to the outer circumferential surface of the reciprocating screw, and the vertical swing plate is fixedly connected to the top of the reciprocating crossbar. During operation, the discharged batteries are placed into the compartment through a sliding port. A pusher then moves a horizontal sliding column into the sliding block, causing the compartment to move inwards. The liquid at the bottom of the refining compartment is heated to generate steam. This steam rises through the holes in the vent rod and the top of the compartment, heating the batteries inside and causing the adhesive between them to detach. Compared to traditional electric or hot air heating, steam has higher conductivity and better temperature uniformity. A reciprocating screw rotates, driving a reciprocating horizontal frame through a cross-shaped spiral groove on the circumferential surface, which moves the frame back and forth within the refining compartment. This movement of the horizontal frame also drives a vertical swing plate, which disperses steam, ensuring more even heating of the batteries above and improving the steam heating effect of the device.

[0008] In one or more embodiments of the present invention, the crushing mechanism includes a crushing chamber and a crushing shaft, the crushing chamber being slidably connected to the inner wall of the refining chamber, and the crushing shaft being rotatably connected to the inner wall of the crushing chamber.

[0009] In one or more embodiments of the present invention, the crushing mechanism further includes a sliding plate and a handle, the sliding plate being slidably connected to the bottom of the crushing chamber and in contact with the crushing chamber, and the handle being fixedly connected to the outer wall of the sliding plate.

[0010] In one or more embodiments of the present invention, the crushing mechanism further includes a receiving frame compartment, a vertical connecting plate frame, and a vertical moving plate. The receiving frame compartment is fixedly connected to the outer wall of the refining compartment, the vertical connecting plate frame is fixedly connected to the outer wall of the compartment frame, the vertical moving plate is fixedly connected to the outer wall of the vertical connecting plate frame, and the compartment frame is in contact with the top of the crushing compartment. After heating is complete, the push plate moves the crossbar, which in turn moves the slag-pushing plate. The slag-pushing plate then pushes the waste batteries, which in turn push the torsion spring plate to unfold. After the torsion spring plate unfolds, the processed batteries fall into the crushing shaft and are crushed. The crushed batteries then fall to the top of the sliding plate. Once all the batteries are crushed, the crushing chamber is pulled out and moved to the top of the receiving chamber. The sliding plate is then pulled to remove the batteries from their restraints, causing them to fall into the receiving chamber. This facilitates manual processing of the battery powder. During the crushing process, the push frame moves the drive column, which in turn moves the chamber frame. The moving chamber frame moves the vertical connecting plate, which in turn moves the vertical moving plate. This forces the batteries stuck at the top of the crushing shaft downwards, preventing them from getting stuck and affecting the refining efficiency of the device. In one or more embodiments of the present invention, the reaction mechanism further includes a rod frame, a first transmission rod, a second transmission rod, a vertical rotating rod, a transverse frame plate, a vertical rotating frame, and a reaction chamber. The rod frame is fixedly connected to the outer wall of the refining chamber. The first transmission rod is slidably connected to the inner wall of the rod frame. The reciprocating screw is connected to the first transmission rod via a bevel gear set. The second transmission rod is rotatably connected to the inner wall of the refining chamber. The first transmission rod and the second transmission rod are connected via a bevel gear set. The reaction chamber is fixedly connected to the inner wall of the refining chamber. The vertical rotating rod is rotatably connected to the inner wall of the reaction chamber. The second transmission rod and the vertical rotating rod are connected via a bevel gear set. The vertical rotating frame is fixedly connected to the top of the vertical rotating rod. The transverse frame plate is fixedly connected to the outer wall of the vertical rotating rod.

[0011] In one or more embodiments of the present invention, the reaction mechanism further includes a transmission plate, a sliding plate, a hook frame, a sulfuric acid chamber, a vertical opening, and a rack separation chamber. The transmission plate is fixedly connected to the top of the transverse frame plate, the sliding plate is slidably connected to the inner wall of the reaction chamber, the transverse frame plate is slidably connected to the inner wall of the sliding plate, the vertical frame is slidably connected to the sliding plate, the hook frame is fixedly connected to the top of the sliding plate, the sulfuric acid chamber is fixedly connected to the inner wall of the refining chamber, the vertical opening is fixedly connected to the top of the sulfuric acid chamber, and the rack separation chamber is slidably connected to the inner wall of the sulfuric acid chamber.

[0012] In one or more embodiments of the present invention, the reaction mechanism further includes a drive rod, a pressing rod, and a moving block. The drive rod is fixedly connected to the inner wall of the separation chamber and is slidably connected to the refining chamber. The pressing rod is fixedly connected to the outer wall of the drive rod, and the moving block is fixedly connected to the outer wall of the pressing rod. The moving block is connected to the refining chamber by a spring. The pulverized battery fragments are then placed inside the reaction chamber, which is subsequently filled with deionized water. During operation, the reciprocating screw rotates, which in turn drives a transmission rod one via a bevel gear set. This rotation, in turn, drives a transmission rod two via the same bevel gear set. The latter, in turn, drives a vertical rotating frame, which in turn rotates a horizontal frame plate. This rotation, in turn, drives a transmission plate, thus mixing and agitating the battery powder with the deionized water, ensuring uniform dispersion and preventing powder agglomeration. Then, the pusher frame moves the vertical connecting plate frame, which in turn moves the vertical moving plate. During this movement, the squeezing block moves the squeezing rod, which in turn moves the drive rod. The drive rod then moves the frame away from the chamber, and sulfuric acid inside the drive rod drips into the device. By manually applying sulfuric acid, the reaction can be stabilized, thus extracting the useful substances from inside the battery. After the reaction is complete, the long hook is removed, hooked onto the hook frame, and then the hook frame is pulled. The hook frame moves, causing the sliding plate to move upward. As the sliding plate moves upward, the impurities at the top are also lifted out. Then, the remaining liquid is extracted to extract the useful substances from inside the liquid.

[0013] A method for recycling positive electrode materials from spent lithium iron phosphate batteries from automobiles includes the following steps: S1. The sliding column moves the compartment frame towards the inside of the device. Then the liquid at the bottom of the refining compartment begins to heat up and generate steam. The steam rises through the holes in the vent rod and the holes in the top of the compartment frame, and then heats the batteries inside the compartment frame with steam, thereby causing the adhesive between the batteries to detach. S2. During the reciprocating movement of the horizontal frame, the vertical swing plate is driven to reciprocate. During the movement, the vertical swing plate releases steam, which makes it heat the battery above more evenly, thereby improving the steam heating effect of the device. S3. During the movement of the crossbar, the slag pusher plate moves, and then the internal slag pusher plate pushes the waste battery. During the movement of the waste battery, the torsion spring plate is pushed to unfold. After the torsion spring plate unfolds, the internally processed battery will fall into the inside of the crushing shaft and then be crushed by the crushing shaft. S4. The vertical connecting plate frame moves, causing the vertical moving plate to move, thereby squeezing the battery stuck at the top of the crushing shaft downwards, thus preventing the battery from getting stuck at the top of the crushing shaft. S5. During the rotation of the transmission rod, the vertical rotating frame is driven to rotate through the bevel gear set. During the rotation of the vertical rotating frame, the horizontal moving frame plate is driven to rotate. The rotation of the horizontal moving frame plate drives the transmission plate to rotate, thereby mixing and stirring the battery powder and deionized water inside, making it evenly dispersed and preventing the powder from agglomerating. S6. The extrusion rod moves, which in turn moves the drive rod. The drive rod moves, which in turn moves the frame away from the chamber. Then, sulfuric acid inside the drive rod drips into the device. By manually applying sulfuric acid, the reaction can be made more stable, thereby extracting the useful substances inside the battery.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This device uses steam to heat the batteries inside the chamber, thereby debonding the adhesive between the batteries. Compared with traditional electric heating and hot air heating, steam has higher conduction efficiency and better temperature uniformity. The reciprocating screw rotates and drives the reciprocating crossbeam to move back and forth under the limit of the refining chamber through the cross-shaped spiral groove on the circumferential surface. During the reciprocating movement of the reciprocating crossbeam, it drives the vertical swing plate to move back and forth. During the movement, the vertical swing plate disperses steam, so that it heats the batteries above more evenly, thereby improving the device's effect on removing the gel-like substances from the batteries.

[0015] 2. The battery will fall into the inside of the crushing shaft and be crushed by it. After being crushed, the battery will fall to the top of the sliding plate. After all the batteries are crushed, the crushing chamber will be pulled out and moved to the top of the receiving chamber. Then, the sliding plate will be pulled to remove the battery from its limit and fall into the inside of the receiving chamber, which will facilitate the subsequent manual processing of the battery powder. The vertical connecting plate frame moves, which drives the vertical moving plate to move, thereby squeezing the battery stuck at the top of the crushing shaft downwards, thus preventing the battery from getting stuck at the top of the crushing shaft and affecting the refining efficiency of the device.

[0016] 3. The horizontal frame plate rotates, driving the transmission plate to rotate, thereby mixing and stirring the battery powder and deionized water inside, making it evenly dispersed and preventing powder agglomeration. By manually applying sulfuric acid, the reaction can occur more stably, thus refining the useful substances inside the battery. After the reaction is completed, the long hook is taken out, hooked onto the hook frame, and then the hook frame is pulled. The movement of the hook frame drives the sliding plate to move upward. When the sliding plate moves upward, the impurities at the top are also removed. Then the remaining liquid is extracted to extract the useful substances inside the liquid. Attached Figure Description

[0017] Figure 1 This is an enlarged schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the sliding joint structure of the present invention; Figure 3 This is a schematic diagram of the shredding chamber structure of the present invention; Figure 4 This is a schematic diagram of the transmission plate structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of a portion of the structure at point A; Figure 6 This is a schematic diagram of the reaction chamber structure of the present invention; Figure 7 For the present invention Figure 6 A magnified view of the structure at point B in the middle section.

[0018] Explanation of key figure labels: 1. Refining chamber; 2. Sliding chamber mechanism; 201. Sliding block; 202. Horizontal sliding column; 203. Push frame; 204. Drive column; 205. Chamber frame; 206. Ventilation rod; 207. Ventilation groove; 208. Torsion spring plate; 209. Horizontal limit rod; 210. Push plate; 211. Horizontal bar; 212. Slag pusher plate; 213. Sliding port; 214. Reciprocating screw; 215. Reciprocating cross frame; 216. Vertical swing plate; 3. Crushing mechanism; 301. Crushing chamber; 302. Crushing shaft; 303. Sliding... 304. Plate; 305. Pull handle; 306. Frame collection compartment; 307. Vertical connecting plate frame; 4. Vertical moving plate; 4. Reaction mechanism; 401. Rod frame; 402. Transmission rod one; 403. Transmission rod two; 404. Vertical rotating rod; 405. Horizontal moving frame plate; 406. Vertical rotating frame; 407. Transmission plate; 408. Sliding plate; 409. Hook frame; 410. Sulfuric acid tank; 411. Reaction chamber; 412. Vertical opening; 413. Frame separation compartment; 414. Drive rod; 415. Extrusion rod; 416. Moving block. Detailed Implementation

[0019] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] Please see Figures 1-7 One embodiment of the present invention is: a method for recycling positive electrode material in waste lithium iron phosphate batteries of automobiles, the apparatus of which includes: a refining chamber 1, a sliding chamber mechanism 2 provided inside the refining chamber 1, a crushing mechanism 3 provided inside the refining chamber 1, and a reaction mechanism 4 provided inside the refining chamber 1. The slide mechanism 2 includes a sliding block 201, a horizontal sliding column 202, a pusher 203, a drive column 204, a frame 205, and a venting rod 206. The sliding block 201 is fixedly connected to the outer wall of the refining chamber 1. The horizontal sliding column 202 is slidably connected to the inner wall of the sliding block 201. The pusher 203 is fixedly connected to the right side of the pusher 203. The drive column 204 is fixedly connected to the inner wall of the pusher 203. The frame 205 is fixedly connected to the left side of the drive column 204. The frame 205 is slidably connected to the inner wall of the refining chamber 1. The venting rod 206 is fixedly connected to the inner wall of the refining chamber 1. The outer wall of the frame 205 is in contact with the venting rod 206.

[0021] The pod mechanism 2 also includes a venting groove 207, a torsion spring plate 208, and a horizontal limiting rod 209. The horizontal limiting rod 209 is slidably connected to the outer wall of the drive column 204. The venting groove 207 is opened on the bottom inner wall of the pod frame 205. The torsion spring plate 208 is rotatably connected to the outer wall of the pod frame 205 through a torsion spring.

[0022] The slide mechanism 2 also includes a push plate 210, a crossbar 211, a slag pusher plate 212, a sliding opening 213, a reciprocating screw 214, a reciprocating crossbar 215, and a vertical swing plate 216. The push plate 210 is fixedly connected to the outer wall of the horizontal limit rod 209, and the crossbar 211 is fixedly connected to the left side of the push plate 210. The circumferential surface of the crossbar 211 is slidably connected to the inner wall of the slide frame 205. The slag pusher plate 212 is fixedly connected to the left side of the crossbar 211. Plate 212 is slidably connected to the inner wall of the frame 205, slide 213 is slidably connected to the outer wall of the frame 205, reciprocating screw 214 is rotatably connected to the inner wall of the refining chamber 1, a motor is provided on the left side of the reciprocating screw 214, reciprocating cross frame 215 is slidably connected to the inner wall of the refining chamber 1, reciprocating cross frame 215 is movably connected to the outer circumferential surface of the reciprocating screw 214, and vertical swing plate 216 is fixedly connected to the top of the reciprocating cross frame 215; During use, the discharged batteries are placed into the compartment 205 through the sliding port 213. Then, the pusher 203 is pushed to move the horizontal sliding column 202 into the sliding block 201. The horizontal sliding column 202 slides and moves the compartment 205 into the interior of the device. Then, the liquid at the bottom of the refining compartment 1 begins to heat and generate steam. The steam rises and passes through the holes of the vent rod 206 and the holes at the top of the compartment 205, thereby heating the batteries inside the compartment 205 and causing the adhesive between the batteries to detach. Compared with traditional electric heating and hot air heating, steam has higher conduction efficiency and better temperature uniformity. The reciprocating screw 214 rotates and drives the reciprocating crossbar 215 to reciprocate under the limit of the refining compartment 1 through the cross-shaped spiral groove on the circumferential surface. During the reciprocating movement of the reciprocating crossbar 215, it drives the vertical swing plate 216 to reciprocate. During the movement, the vertical swing plate 216 disperses the steam, making it heat the batteries above more evenly, thereby improving the steam heating effect of the device.

[0023] The crushing mechanism 3 includes a crushing chamber 301 and a crushing shaft 302. The crushing chamber 301 is slidably connected to the inner wall of the refining chamber 1, and the crushing shaft 302 is rotatably connected to the inner wall of the crushing chamber 301.

[0024] The crushing mechanism 3 also includes a sliding plate 303 and a handle 304. The sliding plate 303 is slidably connected to the bottom of the crushing chamber 301 and is in contact with the crushing chamber 301. The handle 304 is fixedly connected to the outer wall of the sliding plate 303.

[0025] The crushing mechanism 3 also includes a receiving frame 305, a vertical connecting plate frame 306, and a vertical moving plate 307. The receiving frame 305 is fixedly connected to the outer wall of the refining chamber 1, the vertical connecting plate frame 306 is fixedly connected to the outer wall of the chamber frame 205, and the vertical moving plate 307 is fixedly connected to the outer wall of the vertical connecting plate frame 306. The chamber frame 205 is in contact with the top of the crushing chamber 301. During the movement of the waste batteries, the torsion spring plate 208 is unfolded. After the torsion spring plate 208 is unfolded, the processed batteries inside fall into the crushing shaft 302 and are then crushed by the crushing shaft 302. After being crushed, the batteries fall to the top of the sliding plate 303. After all the batteries are crushed, the crushing chamber 301 is pulled out and moved to the top of the receiving chamber 305. Then the sliding plate 303 is pulled so that the batteries at the top of the sliding plate 303 are no longer restricted and fall into the receiving chamber 305, which facilitates the subsequent manual processing of the battery powder. The vertical connecting plate frame 306 moves, which drives the vertical moving plate 307 to move, thereby squeezing the batteries stuck at the top of the crushing shaft 302 downward, thus preventing the batteries from getting stuck at the top of the crushing shaft 302 and affecting the refining efficiency of the device.

[0026] Working principle: During use, the discharged batteries are placed into the compartment 205 through the sliding port 213. Then, the pusher 203 is pushed, causing the horizontal sliding column 202 to slide into the sliding block 201. The sliding column 202 moves the compartment 205 inwards. The liquid at the bottom of the refining compartment 1 is then heated to generate steam. The steam rises through the holes in the vent rod 206 and the top of the compartment 205, thus heating the batteries inside the compartment 205. The adhesive between the batteries detaches, resulting in higher steam conduction efficiency and better temperature uniformity compared to traditional electric heating and hot air heating. Subsequently, the reciprocating screw 214 rotates and drives the reciprocating crossbeam 215 to reciprocate within the limit of the refining chamber 1 through the cross-shaped spiral groove on the circumferential surface. During the reciprocating movement of the reciprocating crossbeam 215, it drives the vertical swing plate 216 to reciprocate. The vertical swing plate 216 disperses steam during the movement, making it heat the batteries above more evenly, thereby improving the steam heating effect of the device.

[0027] After heating is complete, the pusher plate 210 moves the crossbar 211, which in turn moves the slag pusher plate 212. The slag pusher plate 212 then pushes the waste batteries, which in turn unfold the torsion spring plate 208. After unfolding, the processed batteries fall into the crushing shaft 302 and are crushed. The crushed batteries then fall to the top of the sliding plate 303. Once all batteries are crushed, the crushing chamber 301 is pulled out and moved to the top of the receiving chamber 305. Then, the sliding plate 303 is pulled... The battery at the top of the sliding plate 303 loses its restraint and falls into the receiving chamber 305, thus facilitating the subsequent manual processing of the battery powder. During the battery crushing process, the pusher 203 is pushed to move the drive column 204. The drive column 204 moves the chamber frame 205, which in turn moves the vertical connecting plate frame 306. The vertical connecting plate frame 306 moves the vertical moving plate 307, thereby squeezing the battery stuck at the top of the crushing shaft 302 downwards, thus preventing the battery from getting stuck at the top of the crushing shaft 302 and affecting the refining efficiency of the device.

[0028] Please see Figures 1-7Based on the above embodiments, in another embodiment of the present invention, the reaction mechanism 4 further includes a rod frame 401, a first transmission rod 402, a second transmission rod 403, a vertical rotating rod 404, a horizontal frame plate 405, a vertical rotating frame 406, and a reaction chamber 411. The rod frame 401 is fixedly connected to the outer wall of the refining chamber 1, the first transmission rod 402 is slidably connected to the inner wall of the rod frame 401, and the reciprocating screw 214 is connected to the first transmission rod 402 via a bevel gear set. The second transmission rod... 403 is rotatably connected to the inner wall of the refining chamber 1. Transmission rod 1 402 and transmission rod 2 403 are connected by a bevel gear set. The reaction chamber 411 is fixedly connected to the inner wall of the refining chamber 1. The vertical rotating rod 404 is rotatably connected to the inner wall of the reaction chamber 411. Transmission rod 2 403 and vertical rotating rod 404 are connected by a bevel gear set. The vertical rotating frame 406 is fixedly connected to the top of the vertical rotating rod 404. The horizontal moving frame plate 405 is fixedly connected to the outer wall of the vertical rotating rod 404.

[0029] The reaction mechanism 4 also includes a transmission plate 407, a sliding plate 408, a hook frame 409, a sulfuric acid tank 410, a vertical opening 412, and a rack separation chamber 413. The transmission plate 407 is fixedly connected to the top of the transverse frame plate 405. The sliding plate 408 is slidably connected to the inner wall of the reaction tank 411. The transverse frame plate 405 and the inner wall of the sliding plate 408 are slidably connected. The vertical frame 406 is slidably connected to the sliding plate 408. The hook frame 409 is fixedly connected to the top of the sliding plate 408. The sulfuric acid tank 410 is fixedly connected to the inner wall of the refining tank 1. The vertical opening 412 is fixedly connected to the top of the sulfuric acid tank 410. The rack separation chamber 413 is slidably connected to the inner wall of the sulfuric acid tank 410.

[0030] The reaction mechanism 4 also includes a drive rod 414, a pressing rod 415, and a moving block 416. The drive rod 414 is fixedly connected to the inner wall of the separation chamber 413 and is slidably connected to the refining chamber 1. The pressing rod 415 is fixedly connected to the outer wall of the drive rod 414, and the moving block 416 is fixedly connected to the outer wall of the pressing rod 415. The moving block 416 is connected to the refining chamber 1 by a spring. The internal battery powder and deionized water are mixed and stirred to make them evenly dispersed and prevent the powder from agglomerating. By manually applying sulfuric acid, the reaction can be made more stable, thereby refining the useful substances inside the battery.

[0031] A method for recycling positive electrode materials from spent lithium iron phosphate batteries from automobiles includes the following steps: S1. The sliding column 202 moves the frame 205 towards the inside of the device. Then the liquid at the bottom of the refining chamber 1 begins to heat and generate steam. The steam rises through the holes of the vent rod 206 and the holes at the top of the frame 205, and then heats the batteries inside the frame 205 with steam, thereby causing the adhesive between the batteries to detach. S2. During the reciprocating movement of the reciprocating horizontal frame 215, the vertical swing plate 216 is driven to reciprocate. During the movement, the vertical swing plate 216 releases steam, which makes it heat the battery above more evenly, thereby improving the steam heating effect of the device. S3. During the movement of the crossbar 211, the slag pusher 212 is moved. Then the slag pusher 212 pushes the waste battery. During the movement, the waste battery pushes the torsion spring plate 208 to unfold. After the torsion spring plate 208 unfolds, the processed battery inside will fall into the crushing shaft 302 and be crushed by the crushing shaft 302. S4. The vertical connecting plate 306 moves, driving the vertical moving plate 307 to move, thereby squeezing the battery stuck at the top of the crushing shaft 302 downward, thus preventing the battery from getting stuck at the top of the crushing shaft 302. S5. During the rotation of transmission rod 403, the vertical rotating frame 406 is driven to rotate through the bevel gear set. During the rotation of the vertical rotating frame 406, the horizontal moving frame plate 405 is driven to rotate. The rotation of the horizontal moving frame plate 405 drives the transmission plate 407 to rotate, thereby mixing and stirring the battery powder and deionized water inside, making it evenly dispersed and preventing the powder from agglomerating. S6. The extrusion rod 415 moves, causing the drive rod 414 to move. The drive rod 414 moves, causing the frame separation chamber 413 to move. Then, the sulfuric acid inside the drive rod 414 drips into the device. By manually applying sulfuric acid, the reaction can be made more stable, thereby refining the useful substances inside the battery.

[0032] Working Principle: The pulverized battery fragments are then placed inside the reaction chamber 411, which is then filled with deionized water. During operation, the reciprocating screw 214 rotates, which in turn drives the transmission rod 402 via a bevel gear set. The transmission rod 402, in turn, drives the transmission rod 403 via the bevel gear set. The rotation of the transmission rod 403, in turn, drives the vertical rotating frame 406 via the bevel gear set. The rotation of the vertical rotating frame 406, in turn, drives the horizontal moving frame plate 405. The rotation of the horizontal moving frame plate 405, in turn, drives the transmission plate 407. This process mixes and stirs the battery powder and deionized water, ensuring uniform dispersion and preventing powder agglomeration. Subsequently, the pusher frame 205 moves the vertical connecting plate frame 306. During the movement of the vertical connecting plate frame 306, the vertical moving plate 307 moves. During the movement of the vertical moving plate 307, the squeezing block 416 moves the squeezing rod 415. The movement of the squeezing rod 415 moves the drive rod 414. The movement of the drive rod 414 moves the frame away from the chamber 413. Then, sulfuric acid inside the drive rod 414 drips into the device. By manually applying sulfuric acid, the reaction can occur more stably, thereby extracting the useful substances inside the battery. After the reaction is completed, the long hook is taken out, hooked onto the hook frame 409, and then the hook frame 409 is pulled. The movement of the hook frame 409 moves the sliding plate 408 upward. When the sliding plate 408 moves upward, the impurities at the top are also lifted out. Then, the remaining liquid is extracted to extract the useful substances inside the liquid.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles, the apparatus comprising: The refining chamber (1) is equipped with a sliding chamber mechanism (2), a crushing mechanism (3), and a reaction mechanism (4). The slide mechanism (2) includes a sliding block (201), a horizontal sliding column (202), a pusher (203), a drive column (204), a frame (205), and a venting rod (206). The sliding block (201) is fixedly connected to the outer wall of the refining chamber (1). The horizontal sliding column (202) is slidably connected to the inner wall of the sliding block (201). The pusher (203) is fixedly connected to the right side of the pusher (203). The drive column (204) is fixedly connected to the inner wall of the pusher (203). The frame (205) is fixedly connected to the left side of the drive column (204). The frame (205) is slidably connected to the inner wall of the refining chamber (1). The venting rod (206) is fixedly connected to the inner wall of the refining chamber (1). The outer wall of the frame (205) is in contact with the venting rod (206). The recycling method includes the following steps: S1. The sliding column (202) moves the frame (205) towards the inside of the device. Then the liquid at the bottom of the refining chamber (1) begins to heat and generate steam. The steam rises through the holes of the vent rod (206) and the holes at the top of the frame (205), and then heats the batteries inside the frame (205) with steam, thereby causing the adhesive between the batteries to detach. S2. During the reciprocating movement of the reciprocating horizontal frame (215), the vertical swing plate (216) is driven to reciprocate. During the movement, the vertical swing plate (216) releases steam, which makes it heat the battery above more evenly, thereby improving the steam heating effect of the device. S3. During the movement of the crossbar (211), the slag pusher (212) is moved. Then the slag pusher (212) pushes the waste battery. During the movement, the waste battery pushes the torsion spring plate (208) to unfold. After the torsion spring plate (208) unfolds, the processed battery inside will fall into the crushing shaft (302) and be crushed by the crushing shaft (302). S4. The vertical connecting plate frame (306) moves, causing the vertical moving plate (307) to move, thereby squeezing the battery stuck at the top of the crushing shaft (302) downward, thus preventing the battery from getting stuck at the top of the crushing shaft (302); S5. During the rotation of transmission rod 2 (403), the vertical rotating frame (406) is driven to rotate through the bevel gear set. During the rotation of the vertical rotating frame (406), the horizontal moving frame plate (405) is driven to rotate. The rotation of the horizontal moving frame plate (405) drives the transmission plate (407) to rotate, thereby mixing and stirring the battery powder and deionized water inside, making it evenly dispersed and preventing the powder from agglomerating. S6. The extrusion rod (415) moves, causing the drive rod (414) to move. The drive rod (414) moves, causing the frame to move (413). Then, the sulfuric acid inside the drive rod (414) drips into the device. By manually applying sulfuric acid, the reaction can be made more stable, thereby extracting the useful substances inside the battery.

2. The method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 1, characterized in that, The pod mechanism (2) also includes a ventilation groove (207), a torsion spring plate (208), and a horizontal limiting rod (209). The horizontal limiting rod (209) is slidably connected to the outer wall of the drive column (204). The ventilation groove (207) is opened on the bottom inner wall of the pod frame (205). The torsion spring plate (208) is rotatably connected to the outer wall of the pod frame (205) through a torsion spring.

3. The method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 2, characterized in that, The slide mechanism (2) further includes a push plate (210), a crossbar (211), a slag pusher plate (212), a sliding port (213), a reciprocating screw (214), a reciprocating crossbar (215), and a vertical swing plate (216). The push plate (210) is fixedly connected to the outer wall of the horizontal limit rod (209), the crossbar (211) is fixedly connected to the left side of the push plate (210), and the circumferential surface of the crossbar (211) is slidably connected to the inner wall of the slide frame (205). The slag pusher plate (212) is fixedly connected to the left side of the crossbar (211). The slag pusher plate (212) is slidably connected to the inner wall of the compartment frame (205), the slide (213) is slidably connected to the outer wall of the compartment frame (205), the reciprocating screw (214) is rotatably connected to the inner wall of the refining compartment (1), a motor is provided on the left side of the reciprocating screw (214), the reciprocating cross frame (215) is slidably connected to the inner wall of the refining compartment (1), the reciprocating cross frame (215) is movably connected to the outer circumferential surface of the reciprocating screw (214), and the vertical swing plate (216) is fixedly connected to the top of the reciprocating cross frame (215).

4. The method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 3, characterized in that, The crushing mechanism (3) includes a crushing chamber (301) and a crushing shaft (302). The crushing chamber (301) is slidably connected to the inner wall of the refining chamber (1), and the crushing shaft (302) is rotatably connected to the inner wall of the crushing chamber (301).

5. A method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 4, characterized in that, The crushing mechanism (3) also includes a sliding plate (303) and a handle (304). The sliding plate (303) is slidably connected to the bottom of the crushing chamber (301), and the handle (304) is fixedly connected to the outer wall of the sliding plate (303).

6. A method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 5, characterized in that, The crushing mechanism (3) also includes a receiving frame compartment (305), a vertical connecting plate frame (306), and a vertical moving plate (307). The receiving frame compartment (305) is fixedly connected to the outer wall of the refining compartment (1). The vertical connecting plate frame (306) is fixedly connected to the outer wall of the compartment frame (205). The vertical moving plate (307) is fixedly connected to the outer wall of the vertical connecting plate frame (306). The compartment frame (205) is in contact with the top of the crushing compartment (301).

7. A method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 6, characterized in that, The reaction mechanism (4) includes a rod frame (401), a first transmission rod (402), a second transmission rod (403), a vertical rotating rod (404), a horizontal moving frame plate (405), a vertical rotating frame (406), and a reaction chamber (411). The rod frame (401) is fixedly connected to the outer wall of the refining chamber (1). The first transmission rod (402) is slidably connected to the inner wall of the rod frame (401). The reciprocating screw (214) is connected to the first transmission rod (402) via a bevel gear set. The second transmission rod (403) is rotatably connected to the refining chamber. (1) The inner wall of the refining chamber (1) is connected by a bevel gear set between the first transmission rod (402) and the second transmission rod (403). The reaction chamber (411) is fixedly connected to the inner wall of the refining chamber (1). The vertical rotating rod (404) is rotatably connected to the inner wall of the reaction chamber (411). The second transmission rod (403) and the vertical rotating rod (404) are connected by a bevel gear set. The vertical rotating frame (406) is fixedly connected to the top of the vertical rotating rod (404). The horizontal moving frame plate (405) is fixedly connected to the outer wall of the vertical rotating rod (404).

8. A method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 7, characterized in that, The reaction mechanism (4) also includes a transmission plate (407), a sliding plate (408), a hook frame (409), a sulfuric acid tank (410), a vertical opening (412), and a rack-off chamber (413). The transmission plate (407) is fixedly connected to the top of the transverse frame plate (405). The sliding plate (408) is slidably connected to the inner wall of the reaction chamber (411). The transverse frame plate (405) is slidably connected to the inner wall of the sliding plate (408). The vertical frame (406) is slidably connected to the sliding plate (408). The hook frame (409) is fixedly connected to the top of the sliding plate (408). The sulfuric acid tank (410) is fixedly connected to the inner wall of the refining chamber (1). The vertical opening (412) is fixedly connected to the top of the sulfuric acid tank (410). The rack-off chamber (413) is slidably connected to the inner wall of the sulfuric acid tank (410).

9. A method for recycling positive electrode material from spent lithium iron phosphate batteries from automobiles according to claim 8, characterized in that, The reaction mechanism (4) further includes a drive rod (414), an extrusion rod (415), and a moving block (416). The drive rod (414) is fixedly connected to the inner wall of the lifting chamber (413). The drive rod (414) is slidably connected to the refining chamber (1). The extrusion rod (415) is fixedly connected to the outer wall of the drive rod (414). The moving block (416) is fixedly connected to the outer wall of the extrusion rod (415). The moving block (416) is connected to the refining chamber (1) by a spring.

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