Multifunctional cutting device for recycling lithium battery positive electrode material

Abstract

The invention relates to the technical field of lithium battery cutting, in particular to a multifunctional cutting device for lithium battery positive electrode material recycling, which comprises a workbench, a circulation table A and a circulation table B are mounted on the workbench, a supporting table is arranged on the inner side of a through groove of a vertical plate A, and vertical cutting assemblies are arranged on both sides of the supporting table; a carrying frame is arranged on the side portion of the circulation table B, a loading table is arranged on the carrying frame, a horizontal cutting assembly is arranged on the side portion of the loading table, and a reciprocating driving assembly used for driving the horizontal cutting assembly to do horizontal reciprocating motion is installed in the loading table. Through the automatic step-by-step cutting process, the tabs are vertically cut and independent in priority, so that the recovery efficiency is improved; laser is adopted to precisely cut the shell, so that material cross contamination caused by traditional cutting is avoided, and the purity of the positive electrode material is guaranteed; and through a multi-point multi-direction clamping mechanism and a precise transmission guide system, the high stability and safety of the whole cutting process of the tab and the shell are ensured.

Description

Technical Field

[0001] This invention relates to the field of lithium battery cutting technology, and specifically discloses a multifunctional cutting device for recycling lithium battery cathode materials. Background Technology

[0002] The outermost layer of a lithium battery is the casing, typically made of materials such as metal or aluminum-plastic film. The interior of the casing is where the electrochemical reaction occurs, and its main structure consists of the positive and negative electrodes. The positive electrode is usually made of lithium metal oxides such as lithium cobalt oxide and lithium iron phosphate coated on aluminum foil; the negative electrode is mostly made of materials such as graphite coated on copper foil. The tabs connect the internal and external circuits, responsible for conducting current from the positive and negative electrodes to external devices. In the lithium battery recycling process, for economic returns and technical feasibility considerations, most companies need to recycle and reuse the positive electrode material. The positive electrode material contains a high proportion of scarce and precious metals such as cobalt, nickel, and lithium. The mining costs of these metals are high, and the international supply chain is fragile, making their recycling highly economically beneficial. Secondly, from a technological strategic perspective, the synthesis process of the positive electrode material is complex, and its crystal structure is the carrier of battery energy. By effectively recycling and directly converting its valuable metals into raw materials for preparing new positive electrodes, battery production costs can be significantly reduced, and the security of key national mineral resources can be ensured, reducing dependence on primary ores.

[0003] The invention disclosed in CN111390400A is a dust removal device and a lithium battery electrode tab cutting equipment. Its structure mainly consists of two systems: a dust removal system and a material belt stabilization system. The dust removal system includes a dust removal chamber facing the processing area, with a filter screen at its opening. A suction fan is connected to the chamber via a dust removal pipe. At the moment dust is generated during cutting, negative pressure is used to quickly draw the dust into the chamber and discharge it through the pipe, effectively preventing dust from falling back and contaminating the electrode. The material belt stabilization system includes a vacuum chamber, a vacuum tube, and a vacuum belt driven by a motor. Under the combined action of the suction fan, the vacuum chamber generates suction force to firmly press the material belt onto the vacuum belt. Simultaneously, the motor-driven belt smoothly transports the material belt, thus completely avoiding material belt vibration during cutting and ensuring precise and consistent electrode tab cutting contours.

[0004] The aforementioned existing technology can assist in dust removal during the cutting of lithium battery electrode tabs. In actual lithium battery cutting, most companies commonly use a transverse one-cut method. Because the ends of the wound electrode assembly inside the lithium battery are welded with metal tabs, the transverse cutting blade will directly cut and tear the tabs when it indiscriminately penetrates the entire battery. As a key component for current collection inside the battery, the tabs themselves have high metal purity and recycling value. However, this damage causes the tabs to become entangled with mixed electrode materials, separators, and shell fragments, greatly increasing the difficulty of subsequent sorting and purification. This reduces the recovery rate of high-value metal materials that could otherwise be efficiently recycled and increases the complexity and cost of subsequent metallurgical processes.

[0005] On the other hand, the tabs and corresponding current-collecting areas at both ends of a lithium battery have high hardness and toughness, while the outer shell and internal electrode active material layer in the middle of the battery are relatively soft. This huge difference in material hardness will result in extremely uneven distribution of cutting force during transverse cutting. When the cutting tool comes into contact with the high-hardness tab area, it will generate violent impact and vibration, which may not only cause abnormal wear and chipping of the cutting tool, but also easily cause deviation and jamming of the cutting path, and even extrusion deformation of the battery shell, resulting in an uneven cut surface. This leads to cross-contamination of different components inside the lithium battery, seriously affecting the purity and recycling efficiency of the subsequent cathode material. In summary, the above-mentioned one-cut method not only results in low recycling efficiency of lithium battery cathode materials, but also restricts the efficient development space of the lithium battery recycling industry due to the instability of the cutting process itself. Summary of the Invention

[0006] To address the problem of low recycling efficiency of lithium battery cathode materials due to the one-cut method in the current lithium battery cathode material recycling process, this invention provides a multifunctional cutting device for recycling lithium battery cathode materials.

[0007] To address the above problems, the present invention provides the following technical solution: A multifunctional cutting device for recycling lithium battery cathode materials includes a worktable. A transfer table A and a transfer table B for placing lithium batteries are fixedly installed on the worktable. Vertical plates A and B, which are securely connected to the worktable, are arranged between transfer tables A and B. Each vertical plate A and plate B has a through groove to facilitate the passage of lithium batteries. A support platform for supporting the lithium batteries is provided inside the through groove of vertical plate A. Vertical cutting components are provided on both sides of the support platform for cutting the tabs at both ends of the lithium batteries. A carrier frame, securely connected to the worktable, is provided on the side of transfer table B. A loading platform is arranged on the carrier frame. A horizontal cutting component is provided on the side of the loading platform. A reciprocating drive component for driving the horizontal cutting component to perform horizontal reciprocating motion is installed inside the loading platform. The horizontal cutting component is used to cut the outer casing of the lithium batteries.

[0008] Preferably, a cylinder A is fixedly installed on the worktable, and grooves are provided in both the transfer table A and the transfer table B. The grooves are used for the lithium battery to pass smoothly through the transfer table A and the transfer table B. The piston rod of the cylinder A is arranged coaxially with the groove, and a push plate adapted to the groove is fastened to the piston rod of the cylinder A. The stroke distance of the piston rod of the cylinder A is greater than the distance between the transfer table A and the transfer table B.

[0009] Preferably, two horizontally arranged support rods at the same height are fixedly installed on the support platform. Both support rods are tightly fitted with rod sleeves, which are made of soft polyurethane and are in contact with the outer shell of the lithium battery. The arrangement height of the transfer platform A is higher than that of the support rods, and the arrangement height of the support rods is higher than that of the transfer platform B.

[0010] Preferably, cylinders B and C are fixedly installed on the side of the upright plate A, and the piston rods of cylinders B and C are both facing the support platform and arranged at 90°; the piston rod ends of cylinders B and C are both fixedly installed with supports, and pressure plates are fixedly installed in the supports, and the pressure plates are in contact with the outer shell of the lithium battery.

[0011] Preferably, each of the vertical cutting components includes a suspension seat, with two suspension seats respectively fastened to upright plate A and upright plate B. Support plates are fastened to the sides of both upright plates A and B. Rotary rods are rotatably installed within each support plate. An arm plate is connected to the outer end of the rotating rod. The arm plate has a right-angle plate structure, and its middle section is connected to the rotating rod. A cylinder D is fixedly mounted within the suspension seat. The piston rod of cylinder D is vertically arranged, and its end is hinged to one end of the arm plate. A DC motor is fixedly mounted on the other end of the arm plate. A high-cutting blade is fastened to the main shaft of the DC motor and is vertically arranged.

[0012] Preferably, the workbench has a discharge port A and a discharge port B. The discharge port A is arranged between the transfer table A and the support table, and the discharge port B is arranged between the transfer table B and the support table. The length of the support table is shorter than that of the lithium battery.

[0013] Preferably, the loading platform is arranged at a height higher than the transfer table B. The reciprocating drive assembly includes a turntable that rotates with the loading platform. A horizontal column A is provided below the turntable and is fixedly connected to the loading platform. A drive sleeve is fitted around the horizontal column A. The middle part of the drive sleeve is rotatably connected to the horizontal column A. A horizontal column B is fixedly installed on the turntable. A strip-shaped part is provided above the drive sleeve. A guide groove is opened in the strip-shaped part. The horizontal column B is arranged in the guide groove and slides with it. An arc-shaped part is provided below the drive sleeve. A horizontally sliding plate is provided inside the loading platform. The top of the horizontal plate is driven by the arc-shaped part of the drive sleeve. The horizontal cutting assembly includes a U-shaped frame. The bottom of the horizontal plate is fixedly connected to the U-shaped frame.

[0014] Preferably, a servo motor A is fixedly installed on the loading platform, and the output shaft of the servo motor A is fastened to the turntable; multiple stabilizing seats are fixedly installed inside the loading platform, the horizontal plate is arranged inside the stabilizing seat and slides with it, multiple protruding teeth A are provided on the top of the horizontal plate, and multiple protruding teeth B are provided on the outer arc surface of the arc-shaped part of the drive sleeve, and the protruding teeth A and protruding teeth B mesh and drive each other.

[0015] Preferably, a horizontally arranged guide rail is fixedly installed on the outer side of the loading platform, a slider A is fixedly installed inside the U-shaped frame, the slider A is fitted around the guide rail and slides with it, a fixing frame is fixedly installed on the outer side of the U-shaped frame, a plurality of vertically arranged guide columns are provided inside the fixing frame, a slider B that can slide vertically is fitted around the guide columns, a mounting plate is fixedly connected to the outer side of the slider B, and a laser cutting gun head is fastened to the outer side of the mounting plate, with the head of the laser cutting gun head facing the transfer platform B.

[0016] Preferably, a servo motor B is mounted on the top of the fixing frame, and the output shaft of the servo motor B is connected to a lead screw. The lead screw is located inside the fixing frame and arranged parallel to the guide column. A lead screw seat is mounted on the lead screw and is fastened to the inside of the mounting plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention arranges a transfer table A, a support table, and a transfer table B to form an automated workstation transfer path. The lithium battery is first placed in the groove of the transfer table A, and the push plate driven by cylinder A pushes it precisely to the support table. Two parallel support rods on the support table lift the lithium battery body, so that the tabs at both ends are suspended above the discharge port A and discharge port B. After the vertical cutting component is activated, the arm plate equipped with a DC motor and a high-cutting blade can be driven by cylinder D to move in an arc around the rotating rod, thereby approaching and cutting the battery tabs from the vertical direction. The cut tabs can be directly transferred out of the workstation path through the discharge port A and discharge port B. The above-mentioned cutting operation of cutting the tabs first and then cutting the lithium battery shell is a smooth process. Structurally, it realizes the rapid and independent recycling function of the tab material, avoids subsequent mixing with complex materials, and significantly improves the overall sorting and lithium battery recycling efficiency. 2. After the electrode separation is completed, the lithium battery body is pushed to the transfer table B and enters the horizontal cutting station. The turntable is driven by the servo motor A, and the horizontal column B on the turntable slides in the guide groove of the drive sleeve, converting the rotational motion into the swing of the drive sleeve. Finally, the swing can be converted into a stable and continuous linear reciprocating motion of the horizontal plate, so that the U-shaped frame drives the entire laser cutting gun head to move smoothly along the guide rail, thereby realizing the horizontal reciprocating cutting operation of the lithium battery shell. The above-mentioned cooperative structure design allows the laser beam of the laser cutting gun head to perform non-contact and mechanical stress-free precision cutting of the lithium battery shell. While reducing the heat impact, the lithium battery shell is completely cut, avoiding the cross-contamination and denaturation of internal materials caused by extrusion and high temperature in traditional cutting methods, thus providing a stability guarantee for the subsequent recycling of high-purity cathode materials. 3. When vertically cutting the tabs, this invention utilizes a V-shaped clamping mechanism composed of cylinders B and C arranged on the side of the vertical plate A. This allows the piston rods of the two cylinders to be arranged at a 90-degree angle, with the pressure plates at their ends working together from two directions to firmly press the lithium battery onto the two support rods. This multi-point clamping structure effectively suppresses vibrations and displacements that may occur when cutting high-hardness tabs. Simultaneously, when horizontally cutting the outer shell, the meshing transmission mechanism of convex teeth A and B has self-locking characteristics, providing rigid and slip-free linear drive. This provides reliable radial support for the reciprocating motion of the laser cutting head, preventing it from wobbling. Through the synergistic effect of the above structures, the entire process from tab cutting to outer shell cutting is ensured to be in a highly stable and controlled state. This fundamentally overcomes the problems of cutting vibration, path deviation, and tool wear caused by uneven hardness of lithium battery materials, thus having a very broad application prospect. Attached Figure Description

[0018] To more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall device structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall device structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the push plate mounting structure of the present invention; Figure 4 This is a schematic diagram of the support rod installation structure of the present invention; Figure 5 This is a schematic diagram of the mounting structure of cylinder B and cylinder C of the present invention; Figure 6 This is a schematic diagram of the specific structure of the vertical cutting component of the present invention; Figure 7 This is a schematic diagram of the arrangement structure of the horizontal cutting component and the reciprocating drive component of the present invention; Figure 8 This is a schematic diagram of the drive sleeve mounting structure of the present invention; Figure 9 This is a schematic diagram of the mounting structure of the servo motor A according to the present invention; Figure 10 This is a schematic diagram of the arrangement structure of the protruding teeth A and B of the present invention; Figure 11 This is a schematic diagram of the laser cutting gun head mounting structure of the present invention; In the diagram: 1. Workbench, 2. Transfer table A, 3. Transfer table B, 4. Vertical plate A, 5. Vertical plate B, 6. Through slot, 7. Support platform, 8. Vertical cutting assembly, 801. Suspension seat, 802. Support plate, 803. Rotating rod, 804. Arm plate, 805. Cylinder D, 806. DC motor, 807. High-cutting blade, 9. Carrier frame, 10. Loading platform, 11. Horizontal cutting assembly, 1101. U-shaped frame, 1102. Guide rail, 1103. Slider A, 1104. Fixing frame, 1105. Guide column, 1106. Slider B, 1107. Mounting plate, 1108. Laser cutting gun head, 1109. Servo motor B, 1110. Lead screw, 12. Reciprocating drive assembly, 1201. Turntable, 1202. Horizontal column A, 1203. Drive sleeve plate, 1204. Horizontal column B, 1205. Guide groove, 1206. Horizontal plate, 1207. Servo motor A, 1208. Stabilizer, 1209. Convex tooth A, 1210. Convex tooth B, 13. Cylinder A, 14. Groove, 15. Push plate, 16. Support rod, 17. Rod sleeve, 18. Cylinder B, 19. Cylinder C, 20. Support, 21. Pressure plate, 22. Discharge port A, 23. Discharge port B. Detailed Implementation

[0019] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0020] This specific embodiment provides a multifunctional cutting device for recycling lithium battery cathode materials, such as... Figures 1-11 As shown, the workbench 1 includes a worktable 1 with casters at its bottom for easy movement and a flat top. A transfer table A2 and a transfer table B3 are fixedly mounted on the workbench 1. Both transfer tables A2 and B3 have grooves 14 formed within them, arranged coaxially to allow lithium batteries to pass smoothly and be placed within these grooves.

[0021] A cylinder A13 is fixedly mounted on the workbench 1. The piston rod of the cylinder A13 is arranged coaxially with the two grooves 14. The cylinder A13 is located on the side of the transfer table A2, away from the transfer table B3. A pusher plate 15 is fastened to the piston rod of the cylinder A13. The shape of the pusher plate 15 is adapted to the opening shape of the groove 14, so that the pusher plate 15 can push the lithium battery in the transfer table A2 into the transfer table B3. Furthermore, the stroke distance of the piston rod of the cylinder A13 is greater than the distance between the transfer table A2 and the transfer table B3, thereby ensuring the function of the cylinder A13.

[0022] A vertical plate A4 and a vertical plate B5 are arranged between the transfer table A2 and the transfer table B3. The bottom ends of the vertical plates A4 and B5 are fixedly connected to the worktable 1. The vertical plate A4 is arranged on the side closer to the transfer table A2, and the vertical plate B5 is arranged on the side closer to the transfer table B3. Both the vertical plates A4 and B5 have through slots 6, and the opening size of the two through slots 6 is larger than the size of the transfer tables A2 and B3, so as to facilitate the passage of lithium batteries. A support platform 7 is provided inside the through slot 6 of the vertical plate A4. The bottom of the support platform 7 is fixedly connected to the worktable 1. Two horizontally arranged support rods 16 are fixedly installed on the support platform 7. The two support rods 16 are arranged at the same height and parallel to each other. The transfer table A2 is arranged at a higher height than the two support rods 16, and the two support rods 16 are arranged at a higher height than the transfer table B3. Both ends of the two support rods 16 are fastened to the support platform 7; the outer periphery of the two support rods 16 is fastened with rod sleeves 17, which can be made of soft polyurethane material, so that the rod sleeves 17 come into contact with the outer shell of the lithium battery to achieve the purpose of soft contact.

[0023] Cylinders B18 and C19 are fixedly installed on the side of the upright plate A4. Cylinders B18 and C19 together form a set of cooperating cylinders. Each side of the upright plate A4 has one set of cooperating cylinders, resulting in two sets of cooperating cylinders on the side of the upright plate A4. The piston rods of cylinders B18 and C19 both face the support platform 7 and are arranged at 90°. The intersection point of the extended piston rod ends of cylinders B18 and C19 is located between the two support rods 16. Supports 20 are fixedly installed on the piston rod ends of cylinders B18 and C19. A pressure plate 21 is fixedly installed inside each support 20. The pressure plate 21 has a circular plate structure, allowing its outer peripheral wall to contact the lithium battery casing, thereby firmly pressing the lithium battery onto the two support rods 16.

[0024] Vertical cutting components 8 are provided on both sides of the support platform 7. Two sets of vertical cutting components 8 are fixedly installed on the sides of the upright plates A4 and B5, respectively, thus symmetrically arranging the two sets of vertical cutting components 8 on both sides of the support platform 7. Each vertical cutting component 8 includes a suspension seat 801, with two suspension seats 801 respectively fastened to the upright plates A4 and B5. Support plates 802 are fastened to the sides of the upright plates A4 and B5, with two support plates 802 respectively arranged below the two suspension seats 801. A rotating rod 803 is rotatably installed within each of the two support plates 802. The rotating rod 803 is horizontally arranged and parallel to the support rod 16. An arm plate 804 is connected to the outer end of the rotating rod 803 away from the support plate 802. The arm plate 804 is a right-angle plate structure, and its middle part is connected to the rotating rod 803. A cylinder D805 is fixedly mounted in each of the two suspension seats 801. The piston rod of the cylinder D805 is arranged vertically and downward. The end of the piston rod of the cylinder D805 is hinged to one end of the arm plate 804. A DC motor 806 is fixedly mounted on the other end of the arm plate 804. A high-cutting blade 807 is fastened to the main shaft of the DC motor 806. The DC motor 806 and the high-cutting blade 807 are respectively arranged on both sides of the arm plate 804. The high-cutting blade 807 is arranged vertically so that it can vertically cut the tabs at both ends of the lithium battery.

[0025] The workbench 1 has two discharge ports, A22 and B23. Discharge port A22 is located between the transfer table A2 and the support table 7, and discharge port B23 is located between the transfer table B3 and the support table 7. The electrode tabs cut by the high-cutting blade 807 from the lithium battery fall into the workbench 1 through discharge ports A22 and B23. Two receiving bins can be placed inside the workbench 1, positioned below discharge ports A22 and B23 to store the vertically cut lithium battery electrode tabs. Furthermore, the length of the support table 7 is shorter than that of the lithium battery, allowing the two ends of the lithium battery to be positioned on either side of the support table 7, facilitating the vertical cutting of the electrode tabs by the high-cutting blade 807 and enabling the vertical cutting assembly 8 to function effectively.

[0026] A support frame 9 is provided on the side of the transfer table B3. The support frame 9 is arranged on the side of the upright plate B5 away from the upright plate A4, and the bottom of the support frame 9 is fixedly connected to the worktable 1. A loading platform 10 is fixedly installed on the support frame 9, and the loading platform 10 is located above the transfer table B3. A horizontal cutting assembly 11 is provided on the side of the loading platform 10. A reciprocating drive assembly 12 is installed inside the loading platform 10 to drive the horizontal cutting assembly 11 to perform horizontal reciprocating motion. The horizontal cutting assembly 11 is used to cut the casing of the lithium battery.

[0027] The reciprocating drive assembly 12 includes a turntable 1201 that rotates with the loading platform 10. The turntable 1201 is arranged on the top of the loading platform 10. A servo motor A1207 is fixedly installed on the side of the loading platform 10. The outer housing of the servo motor A1207 is fastened to the loading platform 10. The output shaft of the servo motor A1207 is arranged horizontally and its end can pass through the loading platform 10 and be fastened to the turntable 1201, so that the turntable 1201 rotates continuously on the top side of the loading platform 10.

[0028] Below the turntable 1201, a horizontal column A1202 is fixedly connected to the loading platform 10. The horizontal column A1202 is arranged parallel to the output shaft of the servo motor A1207. A drive sleeve 1203 is fitted around the horizontal column A1202. A circular part is provided in the middle of the drive sleeve 1203, which can rotate with the horizontal column A1202. A horizontal column B1204 is fixedly installed on the turntable 1201. The horizontal column B1204 is arranged parallel to the horizontal column A1202. A strip-shaped part is provided above the drive sleeve 1203. A guide groove 1205 is opened in the strip-shaped part. The horizontal column B1204 is arranged in the guide groove 1205 and slides with it. An arc-shaped portion is provided below the drive sleeve 1203; two stabilizing seats 1208 are fixedly installed inside the loading platform 10, and the same horizontal plate 1206 is provided in both stabilizing seats 1208. The horizontal plate 1206 is arranged horizontally and its two ends are arranged on the outside of the two stabilizing seats 1208; multiple protruding teeth A1209 are provided on the top of the horizontal plate 1206; multiple protruding teeth B1210 are provided on the outer arc surface of the arc-shaped portion of the drive sleeve 1203. The protruding teeth A1209 and B1210 mesh and drive each other, so that when the drive sleeve 1203 rotates, the horizontal plate 1206 slides laterally inside the two stabilizing seats 1208 under the driving action of the protruding teeth A1209 and B1210.

[0029] The horizontal cutting assembly 11 includes a U-shaped frame 1101. The bottom of the horizontal plate 1206 is fastened to one end of the U-shaped frame 1101, thereby driving the U-shaped frame 1101 to move laterally. A horizontally arranged guide rail 1102 is fixedly installed on the outer side of the loading platform 10. A slider A1103 is fixedly installed inside the U-shaped frame 1101. The arc-shaped inner groove of the slider A1103 is adapted to the shape of the protrusion of the guide rail 1102, so that the slider A1103 is fitted around the guide rail 1102 and slides with the guide rail 1102 under the action of the U-shaped frame 1101. A fixing frame 1104 is fixedly installed on the outer side of the U-shaped frame 1101. Two vertically arranged guide columns 1105 are provided inside the fixing frame 1104. A servo motor B1109 is installed on the top of the fixing frame 1104. The output shaft of the servo motor B1109 is arranged vertically downward. The output shaft of the servo motor B1109 is connected to a lead screw 1110. The lead screw 1110 is located inside the fixing frame 1104 and is arranged parallel to the two guide columns 1105. The lead screw 1110 is located between the two guide columns 1105 and is equipped with a lead screw nut. A sliding block B1106 is fitted around the periphery of each of the two guide columns 1105. The sliding block B1106 and the lead screw nut are fastened together to a mounting plate 1107. The mounting plate 1107 can move vertically along the guide column 1105 under the drive of the lead screw nut.

[0030] A laser cutting head 1108 is fastened to the outside of the mounting plate 1107, with the head of the laser cutting head 1108 facing the transfer table B3. The laser cutting head 1108 can use an ultrashort pulse laser; when the laser cutting head 1108 laser cuts the lithium battery casing inside the transfer table B3, the laser energy is absorbed by electrons on the surface of the lithium battery casing material in a very short time, causing the electronic system to be instantly heated to an extremely high temperature, while the atomic lattice remains at a relatively low temperature. This greatly reduces the thermal impact, achieving not only cleaner cutting but also preventing accidental lithium battery explosions.

[0031] The working principle of this invention is as follows: When lithium batteries are being recycled and cut, on-site workers can place the lithium batteries in the groove 14 of the transfer table A2. With the cooperation of the piston rod of cylinder A13 and the push plate 15, the lithium batteries are pushed from the transfer table A2 to the top of the support table 7. The lithium batteries are then stably supported by two support rods 16, so that the two ends of the lithium batteries are arranged on both sides of the support table 7, and the tabs at both ends of the lithium batteries are arranged above the discharge port A22 and the discharge port B23, respectively.

[0032] Under the combined action of cylinders B18 and C19, the two clamping plates 21 gradually approach the lithium battery, ultimately pressing the lithium battery stably against the two support rods 16. By controlling the piston rod of cylinder D805, the piston rod of cylinder D805 is retracted into its cylinder body, and at the same time, the DC motor 806 is started, causing the high-cutting blade 807 to rotate continuously. Through the cooperation of the rotating rod 803 and the arm plate 804, the high-cutting blade 807 approaches the lithium battery and vertically cuts off the tabs at both ends of the lithium battery, causing the two tabs to fall into the interior of the worktable 1 through the discharge port A22 and discharge port B23.

[0033] After the vertical cutting assembly 8 completes the cutting operation on the two tabs of the lithium battery, the lithium battery is pushed into the groove 14 of the transfer table B3 by the cooperation of the cylinder A13 and the push plate 15, and is placed below the horizontal cutting assembly 11. By activating the servo motor A1207, the turntable 1201 rotates continuously, causing the horizontal column B1204 to slide in the guide groove 1205 within the drive sleeve 1203, thereby causing the drive sleeve 1203 to rotate around the periphery of the horizontal column A1202. Simultaneously, under the meshing transmission action of the convex teeth A1209 and B1210, the horizontal plate 1206 reciprocates laterally, causing the U-shaped frame 1101 to drive the fixed frame 1104 to slide laterally along the guide rail 1102. Driven by the servo motor B1109, the laser cutting head 1108 gradually approaches the lithium battery in the transfer table B3, causing the laser cutting head 1108 to reciprocate horizontally cut the lithium battery casing, thereby cutting off the lithium battery casing to facilitate subsequent recycling of the positive electrode material of the lithium battery.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multifunctional cutting device for recycling lithium battery cathode materials, comprising a worktable (1), characterized in that, The workbench (1) is fixedly equipped with a transfer table A (2) and a transfer table B (3) for placing lithium batteries. Between the transfer table A (2) and the transfer table B (3) are vertical plates A (4) and B (5) that are fastened to the workbench (1). Both vertical plates A (4) and B (5) are provided with through slots (6) to facilitate the passage of lithium batteries. Inside the through slot (6) of the vertical plate A (4) is a support platform (7) for supporting lithium batteries. Both sides of the support platform (7) are provided with vertical cutting components. (8) The vertical cutting component (8) is used to cut the tabs at both ends of the lithium battery; the side of the transfer table B (3) is provided with a support frame (9) that is fastened to the worktable (1), and a loading platform (10) is arranged on the support frame (9). The side of the loading platform (10) is provided with a horizontal cutting component (11), and a reciprocating drive component (12) for driving the horizontal cutting component (11) to perform horizontal reciprocating motion is installed in the loading platform (10). The horizontal cutting component (11) is used to cut the outer shell of the lithium battery.

2. The multifunctional lithium battery cathode material recycling cutting device according to claim 1, characterized in that, A cylinder A (13) is fixedly installed on the workbench (1). A groove (14) is provided in both the transfer table A (2) and the transfer table B (3). The groove (14) is used for the lithium battery to pass smoothly through the transfer table A (2) and the transfer table B (3). The piston rod of the cylinder A (13) is arranged coaxially with the groove (14). The piston rod of the cylinder A (13) is fastened to a push plate (15) that is compatible with the groove (14). The stroke distance of the piston rod of the cylinder A (13) is greater than the distance between the transfer table A (2) and the transfer table B (3).

3. The multifunctional lithium battery cathode material recycling cutting device according to claim 1, characterized in that, Two horizontally arranged support rods (16) at the same height are fixedly installed on the support platform (7). The two support rods (16) are all tightly fitted with rod sleeves (17). The rod sleeves (17) are made of soft polyurethane and are in contact with the outer shell of the lithium battery. The arrangement height of the transfer platform A (2) is higher than that of the support rods (16), and the arrangement height of the support rods (16) is higher than that of the transfer platform B (3).

4. The multifunctional lithium battery cathode material recycling cutting device according to claim 1, characterized in that, Cylinder B (18) and cylinder C (19) are fixedly installed on the side of the upright plate A (4). The piston rods of cylinder B (18) and cylinder C (19) are both facing the support platform (7) and arranged at 90°. Supports (20) are fixedly installed at the ends of the piston rods of cylinder B (18) and cylinder C (19). A pressing plate (21) is fixedly installed inside the support (20). The pressing plate (21) is in contact with the outer shell of the lithium battery.

5. The multifunctional lithium battery cathode material recycling cutting device according to claim 1, characterized in that, Each vertical cutting assembly (8) includes a suspension seat (801). The two suspension seats (801) are respectively fastened to the upright plate A (4) and the upright plate B (5). The sides of the upright plate A (4) and the upright plate B (5) are fastened to the support plate (802). The two support plates (802) are rotatably installed with rotating rods (803). The outer end of the rotating rod (803) is connected to an arm plate (804). The arm plate (804) is a right-angle plate structure. The middle part of the arm plate (804) Connected to the rotating rod (803), a cylinder D (805) is fixedly mounted inside the suspension seat (801). The piston rod of the cylinder D (805) is arranged vertically. The end of the piston rod of the cylinder D (805) is hinged to one side of the arm plate (804). A DC motor (806) is fixedly installed on the other side of the arm plate (804). A high-cutting blade (807) is fastened to the main shaft of the DC motor (806). The high-cutting blade (807) is arranged vertically.

6. The multifunctional lithium battery cathode material recycling cutting device according to claim 1, characterized in that, The workbench (1) has a discharge port A (22) and a discharge port B (23). The discharge port A (22) is located between the transfer table A (2) and the support table (7), and the discharge port B (23) is located between the transfer table B (3) and the support table (7). The length of the support table (7) is shorter than that of the lithium battery.

7. A multifunctional cutting device for recycling lithium battery cathode materials according to claim 1, characterized in that, The loading platform (10) is arranged at a height higher than the transfer platform B (3). The reciprocating drive assembly (12) includes a turntable (1201) that rotates with the loading platform (10). A horizontal column A (1202) is provided below the turntable (1201) and is fastened to the loading platform (10). A drive sleeve plate (1203) is fitted around the horizontal column A (1202). The middle part of the drive sleeve plate (1203) rotates with the horizontal column A (1202). A horizontal column B (1204) is fixedly installed on the turntable (1201). The drive sleeve plate (1203) A strip-shaped part is provided above the horizontal cutting assembly (10), and a guide groove (1205) is provided inside the strip-shaped part. The horizontal column B (1204) is arranged in the guide groove (1205) and slides in cooperation with it. An arc-shaped part is provided below the drive sleeve plate (1203). A horizontally sliding horizontal plate (1206) is provided inside the loading platform (10). The top of the horizontal plate (1206) is in transmission cooperation with the arc-shaped part of the drive sleeve plate (1203). The horizontal cutting assembly (11) includes a U-shaped frame (1101). The bottom of the horizontal plate (1206) is fastened to the U-shaped frame (1101).

8. A multifunctional cutting device for recycling lithium battery cathode materials according to claim 7, characterized in that, A servo motor A (1207) is fixedly installed on the loading platform (10). The output shaft of the servo motor A (1207) is fastened to the turntable (1201). Multiple stabilizing seats (1208) are fixedly installed inside the loading platform (10). The horizontal plate (1206) is arranged inside the stabilizing seat (1208) and slides with it. Multiple protruding teeth A (1209) are provided on the top of the horizontal plate (1206). Multiple protruding teeth B (1210) are provided on the outer arc surface of the arc-shaped part of the drive sleeve (1203). The protruding teeth A (1209) and the protruding teeth B (1210) mesh and drive each other.

9. A multifunctional cutting device for recycling lithium battery cathode materials according to claim 7, characterized in that, A horizontally arranged guide rail (1102) is fixedly installed on the outside of the loading platform (10). A slider A (1103) is fixedly installed inside the U-shaped frame (1101). The slider A (1103) is fitted around the guide rail (1102) and slides with it. A fixed frame (1104) is fixedly installed on the outside of the U-shaped frame (1101). A number of vertically arranged guide columns (1105) are provided inside the fixed frame (1104). A slider B (1106) that can slide vertically is fitted around the guide column (1105). A mounting plate (1107) is fixedly connected to the outside of the slider B (1106). A laser cutting gun head (1108) is fastened to the outside of the mounting plate (1107). The head of the laser cutting gun head (1108) faces the transfer table B (3).

10. A multifunctional cutting device for recycling lithium battery cathode materials according to claim 9, characterized in that, A servo motor B (1109) is mounted on the top of the fixed frame (1104). The output shaft of the servo motor B (1109) is connected to a lead screw (1110). The lead screw (1110) is located inside the fixed frame (1104) and is arranged parallel to the guide column (1105). A lead screw nut is mounted on the lead screw (1110) and is fastened to the inside of the mounting plate (1107).

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