A system for fine disassembly of a scrapped power lithium battery cell

Abstract

The application provides a kind of scrap power lithium battery cell fine disassembly system, including feeding module, operating module, hot cutting module, visual module and split module: operating module includes first operating mechanism and second operating mechanism, and first operating mechanism and feeding module are matched to be used to pass lithium battery cell to hot cutting module;Hot cutting module is used to separate the cell negative pole, cell positive pole and diaphragm of lithium battery cell, and the cell negative pole and cell positive pole after hot cutting separation are transferred to visual module by second operating mechanism;Visual module is used to determine the winding direction of cell negative pole and cell positive pole;Split module and second operating mechanism are matched, and are used to separate and disassemble cell negative pole and cell positive pole.The present application sets up feeding module, operating module, hot cutting module, visual module and split module, so that the disassembly of cell negative pole and cell positive pole is more convenient, and the recovery rate of lithium battery cell is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery processing, in particular to a fine disassembling system for scrapped power lithium battery cells. BACKGROUND

[0002] With the rapid development of the new energy automobile industry and the improvement of people's living standards, new energy vehicles have become an indispensable part of people's lives.

[0003] With the popularity of new energy vehicles, the production of power lithium batteries for vehicles has also increased, therefore, the recycling of lithium batteries has become a research topic, the recycling of lithium batteries mainly disassembles power lithium batteries, the purpose is to separate the positive and negative metal materials, and separate different metals for recycling. The positive and negative electrodes of the scrapped power lithium battery cell are not easy to separate, the manual disassembly efficiency is low, it is difficult to disassemble, and the probability of being discarded is relatively large, causing waste of resources and pollution to the surrounding environment.

[0004] The existing lithium battery recycling technology is relatively extensive, the utilization rate is low, and the current widely adopted process is to crush the positive and negative electrodes and the intermediate separator material, heat and melt, and then separate according to the different material characteristics. In the lithium battery disassembly and separation process, there is material waste, complex metal separation process, high cost, and the equipment required for the lithium battery disassembly and separation process is responsible and expensive. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a fine disassembling system for scrapped power lithium battery cells to at least solve the above technical problems.

[0006] The present application provides a fine disassembling system for scrapped power lithium battery cells, which comprises a feeding module, an operating module, a hot cutting module, a visual module and a splitting module:

[0007] The operating module comprises at least a first operating mechanism and a second operating mechanism, the first operating mechanism cooperates with the feeding module, and is used for transferring the lithium battery cell to the hot cutting module;

[0008] The hot cutting module is used for fine disassembly of the lithium battery cell, so that the cell negative electrode, the cell positive electrode and the separator of the lithium battery cell are hot cut and separated, and the cell negative electrode and the cell positive electrode after hot cutting are transferred to the visual module by the second operating mechanism;

[0009] The visual module is used for judging the winding direction of the cell negative electrode and the cell positive electrode;

[0010] The splitting module and the second operating mechanism are matched to separate and disassemble the negative electrode and the positive electrode of the battery cell.

[0011] Further, the feeding module comprises a feeding machine table, a tray conveying belt machine arranged on the feeding machine table, a feeding support frame arranged on the tray conveying belt machine, and a tray translation mechanism and a tray lifting mechanism arranged on the feeding support frame. The tray conveying belt machine is used to transport the lithium battery cell. The tray translation mechanism is used to drive the tray lifting mechanism to move axially on the feeding support frame. The tray lifting mechanism is used to cooperate with the first operating mechanism to grasp the lithium battery cell.

[0012] Further, a tray lifting machine is arranged between the tray conveying belt machine and the feeding machine table. The tray lifting machine is used to cooperate with the tray lifting mechanism to enable the tray lifting mechanism to grasp the tray placed on the tray conveying belt machine. The tray lifting mechanism comprises a lifting cylinder, a tray clamping cylinder, and a tray clamping jaw. The lifting cylinder is used to drive the tray clamping jaw to move axially on the axis. The tray clamping cylinder is used to push the tray clamping jaw to clamp the tray.

[0013] Further, the first operating mechanism comprises a first base and a four-axis mechanical arm mounted on the first base. A first operating assembly is arranged on the four-axis mechanical arm. The first operating assembly comprises two oppositely arranged finger clamps and a driving assembly arranged at one end of any of the finger clamps. The driving assembly is used to drive the two finger clamps to move relative to each other.

[0014] Further, the hot cutting module comprises a hot cutting operation table and a pneumatic adsorption mechanism. The pneumatic adsorption mechanism is arranged on the hot cutting operation table and moves axially on the hot cutting operation table. The pneumatic adsorption mechanism comprises a battery cell support plate, a suction cup, and a height adjustment cylinder. The suction cup is arranged on the battery cell support plate. The height adjustment cylinder is connected to the hot cutting operation table and the battery cell support plate, respectively.

[0015] Further, the hot cutting module further comprises a hot cutting mechanism arranged on the hot cutting operation table. The hot cutting mechanism comprises an upper hot cutting knife, a lower hot cutting knife, a sliding table assembly, and a plurality of air nozzles arranged on the sliding table assembly. The upper hot cutting knife and the lower hot cutting knife are arranged at the upper and lower ends of the pneumatic adsorption mechanism, respectively. The sliding table assembly moves axially on the hot cutting operation table.

[0016] Further, the vision module comprises a bracket, a camera lens arranged on the bracket, a light source arranged around the camera lens, a background plate arranged opposite to the camera lens, and a telescopic cylinder arranged on the bracket. The telescopic cylinder is used to clean the camera lens.

[0017] Further, the second operation mechanism comprises a second base and a six-axis mechanical arm installed on the second base, and an end picker is arranged on the six-axis mechanical arm, and the six-axis mechanical arm and the end picker are matched to transfer the hot-cut separated negative electrode and the positive electrode of the battery cell to the vision module, and separate and disassemble the negative electrode and the positive electrode of the battery cell in cooperation with the disassembly module.

[0018] Further, the disassembly module comprises a disassembly operation table, a clamping jaw translation mechanism and a disassembly clamping jaw arranged on the disassembly operation table, the clamping jaw translation mechanism comprises a translation guide rail arranged on the disassembly operation table and a clamping jaw opening and closing cylinder slidingly arranged on the translation guide rail, and the disassembly clamping jaw is arranged at a free end of the clamping jaw opening and closing cylinder, and the clamping jaw opening and closing cylinder controls the opening and closing of the disassembly clamping jaw.

[0019] Further, a guide mechanism and a separation mechanism are further arranged on the disassembly operation table, the guide mechanism comprises a positive electrode guide table, a negative electrode guide table, a positive electrode guide roller, a positive electrode power roller, a negative electrode guide roller and a negative electrode power roller arranged on the disassembly operation table, the positive electrode guide roller and the positive electrode power roller are arranged at one end of the positive electrode guide table, and the negative electrode guide roller and the negative electrode power roller are arranged at an end of the negative electrode guide table away from the positive electrode guide table.

[0020] Compared with the prior art, the beneficial effects of the present application are that the transfer of the lithium battery cell is completed by cooperation of the feeding module and the first operation mechanism, the lithium battery cell is finely disassembled by the hot cutting module, and then the negative electrode, the positive electrode and the separator of the lithium battery cell are hot-cut separated, so that the negative electrode and the positive electrode of the lithium battery cell are separated and disassembled by the subsequent disassembly module; the vision module can effectively identify the winding direction of the negative electrode and the positive electrode, so that the disassembly of the negative electrode and the positive electrode is more convenient, and the recovery rate of the lithium battery cell is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure diagram of the fine disassembly system for the scrapped power lithium battery cell in the embodiment of the present application.

[0022] Figure 2 It is a structure schematic diagram of the feeding module in the embodiment of the present application.

[0023] Figure 3 It is a structure schematic diagram of the tray lifting mechanism in the embodiment of the present application.

[0024] Figure 4 It is a structure schematic diagram of the tray lifting machine in the embodiment of the present application.

[0025] Figure 5 Structure diagram of a first operating mechanism in an embodiment of the application;

[0026] Figure 6 Structure diagram of a pneumatic suction mechanism in an embodiment of the application;

[0027] Figure 7 Structure diagram of a thermal cutting mechanism in an embodiment of the application;

[0028] Figure 8 Structure diagram of a vision module in an embodiment of the application;

[0029] Figure 9 Structure diagram of a second operating mechanism in an embodiment of the application;

[0030] Figure 10 Structure diagram of a first perspective of a splitting module in an embodiment of the application;

[0031] Figure 11 Structure diagram of a first perspective of a splitting module in an embodiment of the application.

[0032] Figure 12 Process flow diagram of a disassembly process of a lithium battery cell refinement disassembly system in an embodiment of the application.

[0033] Main component symbol explanation:

[0034] 1. Feeding module;

[0035] 11. Feeding table; 12. Tray conveying belt machine; 13. Tray translation mechanism; 14. Tray lifting mechanism; 15. Tray; 16. Tray lifting machine;

[0036] 141. Lifting cylinder; 142. Tray clamping cylinder; 143. Tray clamping jaw; 161. Tray lifting motor; 162. Screw nut seat; 163. Screw rod slider; 164. Screw rod; 165. Tray lifting plate;

[0037] 2. First operating mechanism;

[0038] 21. First operating assembly; 22. Four-axis mechanical arm; 23. First base; 211. Left fingertip clamping plate; 212. Right fingertip clamping plate; 213. Synchronous belt; 214. Synchronous wheel; 215. Driving motor;

[0039] 3. Thermal cutting module;

[0040] 301. Cell support plate; 302. Suction cup; 303. Height adjustment cylinder; 304. Lower thermal cutting knife; 305. Cell; 306. Slide table assembly; 307. Air nozzle support; 308. Air nozzle; 309. Upper thermal cutting knife; 310. Thermal cutting operation table;

[0041] 4. visual module;

[0042] 41. camera lens; 42. light source; 43. cleaning air nozzle; 44. telescopic air cylinder; 45. bracket; 46. background plate;

[0043] 5. second operating mechanism;

[0044] 51. end effector; 52. six-axis robot arm; 53. second base;

[0045] 6. disassembly module; 61. gripper translation mechanism; 62. gripper opening and closing air cylinder; 63. disassembly gripper; 64. positive electrode guide roller; 65. separation chuck; 66. separation mechanism; 67. positive electrode downward pressing air cylinder; 68. negative electrode downward pressing air cylinder; 69. negative electrode guide roller; 70. negative electrode power roller; 71. disassembly operation table; 72. negative electrode pressing air cylinder; 73. negative electrode clamping groove; 74. positive electrode power roller; 75. positive electrode follow-up roller; 76. cutting blade.

[0046] The following detailed description will further describe the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0047] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. Several embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0048] It should be noted that when an element is referred to as being "fixedly attached" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. As used herein the terms "vertical", "horizontal", "left", "right", and the like are merely for purposes of illustration.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0050] Referring to Figures 1 to 11 , a fine disassembly system for scrap power lithium battery cells in an embodiment of the present application is shown, as Figure 1As shown, it comprises a feeding module 1, an operating module, a hot cutting module 3, a visual module 4 and a splitting module 6:

[0051] The operating module comprises a first operating mechanism 2 and a second operating mechanism 5, the first operating mechanism 2 cooperates with the feeding module 1 to deliver the lithium battery cell to the hot cutting module 3; the hot cutting module 3 is used for fine disassembly work on the lithium battery cell to separate the cell negative electrode, the cell positive electrode and the diaphragm of the lithium battery cell; the second operating mechanism 5 delivers the cell negative electrode and the cell positive electrode to the visual module 4 after the hot cutting separation; the visual module 4 is used to determine the winding direction of the cell negative electrode and the cell positive electrode; the splitting module 6 cooperates with the second operating mechanism 5 to separate and disassemble the cell negative electrode and the cell positive electrode.

[0052] It can be understood that the feeding module 1 and the first operating mechanism 2 cooperate to complete the delivery of the lithium battery cell, the hot cutting module 3 performs fine disassembly work on the lithium battery cell, and then the cell negative electrode, the cell positive electrode and the diaphragm of the lithium battery cell are separated by the splitting module 6 for subsequent separation and disassembly; the visual module 4 can effectively identify the winding direction of the cell negative electrode and the cell positive electrode, so that the disassembly of the cell negative electrode and the cell positive electrode is more convenient, and the recovery rate of the lithium battery cell is improved.

[0053] Please refer to Figures 2 to 4 The feeding module 1 comprises a feeding table 11, a tray 15 conveying belt machine 12 arranged on the feeding table 11, a feeding support frame arranged on the tray 15 conveying belt machine 12, and a tray 15 translation mechanism 13 and a tray 15 lifting mechanism 14 arranged on the feeding support frame. In this embodiment, the tray 15 conveying belt machine 12 and the feeding support frame are detachably arranged on the feeding table 11. The tray 15 conveying belt machine 12 comprises a conveying belt and a tray 15 mounted on the conveying belt, and the tray 15 is used to place the lithium battery cell and can move with the movement of the conveying belt. The tray 15 translation mechanism 13 comprises a tray 15 translation slide rail and a tray 15 translation slide block arranged on the tray 15 translation slide rail. The tray 15 lifting mechanism 14 is arranged on the tray 15 translation slide block. A tray 15 lifting machine is arranged at one end of the tray 15 conveying belt machine 12 towards the tray 15 lifting mechanism 14. The tray 15 lifting machine is arranged below the conveying belt. When the tray 15 moves to the corresponding position, the tray 15 translation mechanism 13 pushes the tray 15 lifting mechanism 14 to move towards the corresponding position. At this time, the tray 15 lifting machine lifts the tray 15 so that the tray 15 lifting mechanism 14 can grab the tray 15.

[0054] In the embodiment, the tray 15 lifting mechanism 14 comprises a lifting cylinder 141 for pushing the tray 15 clamping jaw to perform telescopic movement on its axis, a tray 15 clamping cylinder for pushing the tray 15 clamping jaw to clamp the tray 15; the tray 15 lifting machine comprises a tray 15 lifting motor, a lead screw 164 provided at the free end of the tray 15 lifting motor, a nut seat 162 and a lead screw 164 slider 163 provided on the lead screw 164, and the other end of the lead screw 164 slider 163 is provided with a tray 15 lifting plate which abuts against the bottom of the tray 15 when the tray 15 moves to the corresponding position. With the tray 15 lifting motor pushing the lead screw 164 slider 163 to move on the lead screw 164, the tray 15 lifting plate drives the tray 15 to move relative to the lead screw 164.

[0055] Referring to Figure 5 , the first operation mechanism 2 comprises a first base 23 and a four-axis mechanical arm 22 mounted on the first base 23, and a first operation assembly 21 is arranged on the four-axis mechanical arm 22. The first operation assembly 21 comprises two oppositely arranged fingertip clamping plates (left fingertip clamping plate 211 and right fingertip clamping plate 212) and a driving assembly arranged at one end of any fingertip clamping plate. The driving assembly is used to drive the relative movement of the two fingertip clamping plates.

[0056] It can be understood that after the tray 15 lifting mechanism 14 grabs the tray 15, the tray 15 translation mechanism 13 pushes the tray 15 lifting mechanism 14 away from the corresponding position to the grabbing position of the first operation mechanism 2. At this time, the four-axis mechanical arm 22 rotates to the grabbing position on the first base 23 so that the lithium battery cell is arranged at the middle part of the two fingertip clamping plates. The driving assembly clamps the lithium battery cell with the two fingertip clamping plates. The four-axis mechanical arm 22 rotates again and transfers the lithium battery cell to the feeding module 1.

[0057] In the embodiment, the driving assembly comprises a driving motor 215, two synchronous wheels 214 arranged on one side of the two fingertip clamping plates, and a synchronous belt 213 connected between the two synchronous wheels 214. It can be understood that the driving motor 215 drives the two synchronous wheels 214 to rotate, thereby completing the relative movement of the two fingertip clamping plates.

[0058] Specifically, the hot cutting module 3 comprises a hot cutting operation table 310 and a pneumatic adsorption mechanism. A guide rail is arranged at the connection between the pneumatic adsorption mechanism and the hot cutting operation table 310. The pneumatic adsorption mechanism moves axially on the hot cutting operation table 310 through the guide rail.

[0059] Referring to Figures 6 to 7In the embodiment, the pneumatic suction mechanism includes a battery cell support plate 301, a suction cup 302 arranged on the battery cell support plate 301, and a height adjustment cylinder 303 connected to the hot cutting operation table 310 and the battery cell support plate 301 respectively. It can be understood that when the four-axis mechanical arm 22 places the lithium battery cell 305 on the battery cell support plate 301, the suction cup 302 suctions the lithium battery cell 305, thereby ensuring the stability of the entire battery cell 305 during hot cutting and air blowing. The height adjustment cylinder 303 can adjust the height of the entire battery cell support plate 301. The pneumatic suction mechanism moves axially on the hot cutting operation table 310, thereby transferring the lithium battery cell 305 to different stations such as hot cutting and air blowing. It should be noted that the suction cups 302 in the embodiment are distributed on the battery cell support plate 301, and their positions can be arranged according to the size of different models of battery cells 305.

[0060] Further, the hot cutting module 3 further includes a hot cutting mechanism also arranged on the hot cutting operation table 310. The hot cutting mechanism includes an upper hot cutting knife 309, a lower hot cutting knife 304, a sliding table assembly 306, and an air nozzle bracket 307 arranged on the sliding table assembly 306. A plurality of air nozzles 308 are arranged on the air nozzle bracket 307. The upper hot cutting knife 309 and the lower hot cutting knife 304 are arranged at the upper and lower ends of the pneumatic suction mechanism respectively. The sliding table assembly 306 moves axially on the hot cutting operation table 310.

[0061] It can be understood that the hot cutting mechanism is used to separate the negative and positive electrodes and the separator material on the upper and lower surfaces of the battery cell. When the pneumatic suction mechanism moves axially on the hot cutting operation table 310, the lithium battery cell is transferred to the middle of the upper hot cutting knife 309 and the lower hot cutting knife 304. The lower hot cutting knife 304 and the upper hot cutting knife 309 act simultaneously to complete the hot cutting and separation of the battery cell. The pneumatic suction mechanism moves axially on the hot cutting operation table 310, and the battery cell support plate 301 is moved to the air blowing position. The lithium battery cell is air blown by the air nozzles 308. The sliding table assembly 306 can move up and down and left and right on the hot cutting operation table 310, thereby ensuring that the air nozzles 308 adapt to the blowing and disassembly of different models of battery cells.

[0062] Please refer to Figure 8 The vision module 4 includes a bracket 45, a camera lens 41 arranged on the bracket 45, a light source 42 arranged around the camera lens 41, a background plate 46 arranged opposite to the camera lens 41, a telescopic cylinder 44 arranged on the bracket 45, a cleaning air nozzle 43 arranged on the telescopic cylinder 44, and the cleaning air nozzle 43 is inserted into the camera lens 41 to clean the camera lens 41, so as to avoid the influence of dust on the visual judgment and misoperation.

[0063] It can be understood that the visual module 4 can determine the winding direction of the negative electrode and the positive electrode of the battery cell, and then serve as the basis for disassembly in the next disassembly process.

[0064] Please refer to Figure 9 , the second operation mechanism 5 includes a second base 53 and a six-axis mechanical arm 52 mounted on the second base 53, and an end picker 51 is provided on the six-axis mechanical arm 52. The six-axis mechanical arm 52 and the end picker 51 cooperate to transfer the negative electrode and the positive electrode of the battery cell after thermal cutting and separation to the visual module 4, and cooperate with the disassembly module 6 to disassemble the negative electrode and the positive electrode. Wherein, the lithium battery cell after thermal cutting and air blowing is clamped by the end picker 51 on the six-axis mechanical arm 52, and is moved to the camera lens 41 and the background plate 46 of the visual module 4 for shooting. The visual program can determine the winding direction of the battery cell, and then serve as the basis for the rotation disassembly of the end picker 51 in the next disassembly process.

[0065] Please refer to Figures 10 to 11 , the disassembly module 6 includes a disassembly operation table 71 and a clamping jaw translation mechanism 61 and a disassembly clamping jaw 63 provided on the disassembly operation table 71. The clamping jaw translation mechanism 61 includes a translation guide provided on the disassembly operation table 71 and a clamping jaw opening and closing cylinder 62 slidingly provided on the translation guide. The disassembly clamping jaw 63 is provided at the free end of the clamping jaw opening and closing cylinder 62, and the clamping jaw opening and closing cylinder 62 controls the opening and closing of the disassembly clamping jaw 63.

[0066] A separation mechanism 66 is provided at the opposite end of the clamping jaw translation mechanism 61. The separation mechanism 66 includes two separation suction cups 65 and a separation guide. The two separation suction cups 65 move relative to each other on the separation guide.

[0067] Further, a guide mechanism and a separation mechanism 66 are also provided on the disassembly operation table 71. The guide mechanism includes a positive electrode guide table, a negative electrode guide table, a positive electrode guide roller 64, a positive electrode power roller 74, a negative electrode guide roller 69, and a negative electrode power roller 70 provided on the disassembly operation table 71. The positive electrode guide roller 64 and the positive electrode power roller 74 are separately provided at one end of the positive electrode guide table. The negative electrode guide roller 69 and the negative electrode power roller 70 are provided at the end of the negative electrode guide table away from the positive electrode guide table.

[0068] It can be understood that the lithium battery cell transported from the end picker 51 has been subjected to thermal cutting and air blowing separation, and although the positive and negative electrodes have been separated by air blowing, they are still adhered together due to electrostatic adsorption due to their very thinness, and need to be separated to achieve positive and negative electrode recovery. The end picker 51 transfers the cell to the middle of the separation suction cup 65, and each pair of separation suction cups 65 is opposite to the left and right, driven by the separation mechanism 66, the separation suction cup 65 is adsorbed from the left and right to the negative and positive electrodes, the separation module is reversed, and the positive and negative electrodes of the cell are separated in physical space; the clamping jaw translation mechanism 61 drives the disassembly clamping jaw 63 to move to the position where the negative electrode falls, and the clamping jaw opening cylinder 62 clamps the negative electrode under the action of the clamping jaw translation mechanism 61, and moves to the outside of the negative electrode power roller 70, and the disassembly clamping jaw 63 returns to the initial position; the negative electrode down pressure cylinder 68 provided on the negative electrode guide roller 69 drives the negative electrode guide roller 69 to press the negative electrode material between the negative electrode guide roller 69 and the negative electrode power roller 70, and the positive electrode down pressure cylinder 67 provided on the positive electrode power roller 74 also presses the positive electrode material between the positive electrode power roller 74 and the positive electrode follow-up roller 75, and the negative electrode power roller 70 and the positive electrode power roller 74 are started, and the end picker 51 also rotates in the opposite direction of the winding direction of the cell, so that the positive and negative electrodes are continuously disassembled, and the negative electrode material and the negative electrode material are driven by the negative electrode power roller 70 and the positive electrode power roller 74 to enter the material frame.

[0069] It should be noted that the negative electrode pressing cylinder 72, the negative electrode clamping groove 73 and the cutting blade are also provided on the pneumatic adsorption mechanism, which can deal with emergency situations during disassembly. Because the negative electrode material is prone to breakage, once it breaks, the entire disassembly action cannot be performed continuously and needs to be handled in an emergency. When the negative electrode breaks, the negative electrode pressing cylinder 72 drives the negative electrode clamping groove 73 to press the negative electrode, which is cut off under the action of the cutting blade and treated as waste, so as to timely eliminate the fault and smoothly perform the next disassembly.

[0070] As shown in Figure 12 , the disassembly process flow of the lithium battery cell fine disassembly system in the above embodiment of the application is as follows:

[0071] First step: lithium battery cell feeding

[0072] We use a tray with the same maximum outer size but different internal grid sizes to hold lithium battery cells, which can accommodate lithium battery cells of various specifications. The feeding module can complete the feeding of lithium battery cells, and can also complete the recycling of empty trays.

[0073] Second step: lithium battery cell adsorption and fixation

[0074] The first operating mechanism is used to transfer the lithium battery cell in the tray to the cell support plate one by one. The main feature of the cell support plate includes a plurality of position suction cups (which can adapt to different specifications of lithium battery cells). The cell transferred by the first operating mechanism is firmly adsorbed on the table by negative pressure, which facilitates the fixation of the next hot cutting process.

[0075] Third step: hot cutting of lithium battery cell, cutting off the positive and negative electrodes and the separator

[0076] The pneumatic adsorption mechanism performs axial movement on the hot cutting operation table, moves to the hot cutting station, and performs hot cutting operation. The upper and lower cutting knives are heated to a certain temperature, and the upper and lower cutting knives act simultaneously to cut off the positive and negative electrodes and the separator of the lithium battery. In order to ensure the required hot cutting depth and force, the upper and lower cutting knives are provided with adjusting springs at the knife handle positions to control the hot cutting force.

[0077] Fourth step: air blowing separates the negative and positive electrodes and the anode to the adsorption table

[0078] The pneumatic adsorption mechanism performs axial movement on the hot cutting operation table and moves to the air blowing separation unit. Under the action of high-pressure gas sprayed from the left and right air nozzles, the negative, positive and separator cut off in the previous step are separated and attached to the adsorption platform to complete the separation of the upper cut position.

[0079] Fifth step: end gripper clamps the cell

[0080] The end gripper on the second operating mechanism grabs the side of the lithium battery cell above the cell support plate, grabs the cut cell separated by hot cutting and air blowing, moves to the vision module, and judges the position of the sagging part, so as to determine the disassembly and rotation direction of the end gripper for the subsequent process.

[0081] Sixth step: separate the negative and positive electrodes and the separator by double-sided adsorption

[0082] Under the action of the end gripper, the lithium battery cell is transferred to the disassembly module, and the double-sided adsorption separation suction cup is used to tightly attach the negative and positive electrodes separated in the previous step, and then the left and right separation modules are separated under the action of the separation mechanism.

[0083] Seventh step: disassembly gripper clamps the separated negative and positive electrodes and the anode

[0084] The disassembly gripper moves to the position of the negative electrode sagging, clamps the negative electrode, and moves to the negative electrode recycling frame position under the action of the separation mechanism, and places the negative electrode to the corresponding position.

[0085] Eighth step: end gripper rotates and disassembles the positive and negative electrodes

[0086] The end gripper clamps the lithium battery cell according to the result of the fifth step of visual judgment, and performs corresponding rotation disassembly according to the position of the drooping side (if the drooping end is on the left side of the front face, counterclockwise rotation is performed, and if the drooping end is on the right side of the front face, clockwise rotation is performed), until complete disassembly is completed, and the entire process is ended.

[0087] Ninth step: execute the next loop.

[0088] In summary, the scrap power lithium battery cell fine disassembly system in the above embodiments of the application can complete the transfer of the lithium battery cell through the cooperation of the feeding module and the first operating mechanism, and can perform fine disassembly work on the lithium battery cell through the hot cutting module, so that the cell negative electrode, the cell positive electrode and the separator of the lithium battery cell are hot cut and separated, so as to facilitate the subsequent disassembly module to separate and disassemble the cell negative electrode and the cell positive electrode; the visual module can effectively identify the winding direction of the cell negative electrode and the cell positive electrode, so that the disassembly of the cell negative electrode and the cell positive electrode is more convenient, and the recovery rate of the lithium battery cell is improved.

[0089] The technical features of the above-described embodiments can be combined arbitrarily, and in order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0090] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A system for fine disassembly of a retired power lithium battery cell, characterized in that, The device comprises a feeding module, an operating module, a thermal cutting module, a visual module and a splitting module. The operating module comprises at least a first operating mechanism and a second operating mechanism, the first operating mechanism cooperates with the feeding module to transfer the lithium battery cell to the thermal cutting module. The thermal cutting module is used for fine disassembly of the lithium battery cell to separate the cell negative electrode, the cell positive electrode and the diaphragm, and the second operating mechanism is used for transferring the cell negative electrode and the cell positive electrode to the visual module. The visual module is used for judging the winding direction of the cell negative electrode and the cell positive electrode. The splitting module cooperates with the second operating mechanism to separate and disassemble the cell negative electrode and the cell positive electrode. The second operating mechanism comprises a second base and a six-axis mechanical arm installed on the second base, an end picker is arranged on the six-axis mechanical arm, the six-axis mechanical arm and the end picker cooperate to transfer the cell negative electrode and the cell positive electrode to the visual module, and cooperate with the splitting module to separate and disassemble the cell negative electrode and the cell positive electrode. The feeding module comprises a feeding machine, a tray conveying belt machine arranged on the feeding machine, a feeding support frame arranged on the tray conveying belt machine, and a tray translation mechanism and a tray lifting mechanism arranged on the feeding support frame, the tray conveying belt machine is used for conveying the lithium battery cell, the tray translation mechanism is used for driving the tray lifting mechanism to move axially on the feeding support frame, and the tray lifting mechanism is used for cooperating with the first operating mechanism to grasp the lithium battery cell.

2. The system of claim 1, wherein, A tray lifting machine is arranged between the tray conveying belt machine and the feeding machine, the tray lifting machine cooperates with the tray lifting mechanism to enable the tray lifting mechanism to grasp the tray placed on the tray conveying belt machine, the tray lifting mechanism comprises a lifting cylinder, a tray clamping cylinder and a tray clamping jaw, the lifting cylinder is used for driving the tray clamping jaw to stretch and retract on its axis, and the tray clamping cylinder is used for pushing the tray clamping jaw to clamp the tray.

3. The system of claim 2, wherein, ​ 4. The system of claim 1, wherein, The first operating mechanism comprises a first base and a four-axis mechanical arm installed on the first base, and a first operating assembly is arranged on the four-axis mechanical arm, the first operating assembly comprises two oppositely arranged finger clamps and a driving assembly arranged at one end of any of the finger clamps, and the driving assembly is used for driving the two finger clamps to move relative to each other.

5. The system for fine disassembly of decommissioned power lithium battery cells of claim 1, wherein, The hot cutting module comprises a hot cutting operation table and a pneumatic suction mechanism, the pneumatic suction mechanism is arranged on the hot cutting operation table and moves axially on the hot cutting operation table, and the pneumatic suction mechanism comprises a cell support plate, a suction disc and a height-adjusting cylinder, the suction disc is arranged on the cell support plate, and the height-adjusting cylinder is connected to the hot cutting operation table and the cell support plate respectively.

6. The system of claim 5, wherein, The hot cutting module further comprises a hot cutting mechanism arranged on the hot cutting operation table, the hot cutting mechanism comprises an upper hot cutting knife, a lower hot cutting knife, a sliding table assembly and a plurality of air nozzles arranged on the sliding table assembly, the upper hot cutting knife and the lower hot cutting knife are arranged at the upper and lower ends of the pneumatic suction mechanism respectively, and the sliding table assembly moves axially on the hot cutting operation table.

7. The system for fine disassembly of decommissioned power lithium battery cells of claim 1, wherein, The visual module comprises a bracket, a camera lens arranged on the bracket, a light source arranged around the camera lens, a background plate arranged opposite to the camera lens, and a telescopic cylinder arranged on the bracket, and the telescopic cylinder is used for cleaning the camera lens.

8. The system for fine disassembly of decommissioned power lithium battery cells of claim 1, wherein, A guide mechanism is further arranged on the splitting operation table, the guide mechanism comprises a positive electrode guide table, a negative electrode guide table, a positive electrode guide roller, a positive electrode power roller, a negative electrode guide roller and a negative electrode power roller arranged on the splitting operation table, the positive electrode guide roller and the positive electrode power roller are arranged at one end of the positive electrode guide table, and the negative electrode guide roller and the negative electrode power roller are arranged at one end of the negative electrode guide table away from the positive electrode guide table.

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