Separation, excitation and separation integrated equipment for recycling lithium hexafluorophosphate-based electrolyte

Abstract

The invention discloses splitting, shock excitation and separation integrated equipment for lithium hexafluorophosphate-based electrolyte recovery, and relates to the technical field of lithium hexafluorophosphate-based electrolyte recovery, the splitting, shock excitation and separation integrated equipment comprises a conveying table and a sealing cover, the top of the conveying table is provided with the sealing cover, the top of the conveying table is provided with a position control mechanism, and the position control mechanism comprises a track conveying plate arranged at the top of the conveying table; an abutting block is arranged on a second sliding block installed at the top of the rail conveying plate, and transmission columns are symmetrically welded and fixed to the side of the abutting block. By integrating components such as the position control mechanism, the cutting vibration mechanism and the lifting frame, clamping, girdling, vibration separation and heating recovery of the battery are automatically completed, manual intervention is reduced, the overall battery treatment efficiency is improved, meanwhile, low-temperature baking condensation is adopted subsequently, an organic solvent is sublimated or volatilized under strict temperature control, and the battery quality is improved. And the lithium hexafluorophosphate is recycled through a condensing system, so that subsequent separation of the lithium hexafluorophosphate is facilitated.

Description

Technical Field

[0001] This invention relates to the field of lithium hexafluorophosphate-based electrolyte recovery technology, specifically to an integrated equipment for the disassembly and vibration separation of lithium hexafluorophosphate-based electrolyte recovery. Background Technology

[0002] Lithium hexafluorophosphate (LiPF6)-based electrolyte is an ionic conductor composed of lithium hexafluorophosphate dissolved in an organic solvent. It acts as a bridge between the positive and negative electrodes of a lithium-ion battery, responsible for conducting current. This ionic conductor has high ionic conductivity, providing sufficient lithium-ion migration capability to ensure good rate performance of the battery. At the same time, its stable voltage window is about 0-4.5V, which can match most high-voltage positive electrode materials. Lithium hexafluorophosphate participates in the formation of a stable and dense solid electrolyte interface film on the surface of the graphite negative electrode. This film can prevent solvent molecules from co-intercalating and damaging the graphite structure, which is the key to the long-term cycling capability of the battery.

[0003] Despite its significant advantages, lithium hexafluorophosphate (LiPF6) also has very obvious disadvantages. It suffers from poor thermal stability, decomposing at temperatures above approximately 60-70°C. The resulting phosphorus pentafluoride is a highly reactive and potent Lewis acid that attacks organic solvents in the electrolyte, triggering a series of side reactions that lead to electrolyte deterioration, gas production, and battery bulging. Furthermore, it is extremely sensitive to moisture; even trace amounts can cause hydrolysis. The hydrofluoric acid produced is highly corrosive, corroding electrode materials and current collectors, damaging the SEI film, and causing a sharp decline in battery performance. The generated phosphorus trifluoride continues to react with water, producing even more HF. Therefore, battery production must be carried out in an extremely dry environment. Additionally, during low-temperature battery disassembly, the solidified electrolyte adheres tightly to the cell layer, affecting the overall disassembly efficiency.

[0004] To address this, we propose an integrated equipment for the disassembly and vibration separation of lithium hexafluorophosphate-based electrolyte recovery. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated equipment for the disassembly and vibration separation of lithium hexafluorophosphate-based electrolyte recovery, thereby solving the problems mentioned in the background art;

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated equipment for disassembling and vibrating separation of lithium hexafluorophosphate-based electrolyte recovery, comprising a conveyor platform and a sealing cover. The sealing cover is installed on the top of the conveyor platform, and a position control mechanism is installed on the top of the conveyor platform. The position control mechanism includes a track conveyor plate set on the top of the conveyor platform. A sliding block is provided on the second slider installed on the top of the track conveyor plate, and a transmission column is symmetrically welded and fixed on the side of the abutment block.

[0007] A lifting frame is fixed on the conveyor platform and located on top of the track conveyor plate. A cutting and vibration mechanism is symmetrically installed on a plate at the bottom of the lifting frame. The cutting and vibration mechanism includes a sleeve that is slidably connected to the bottom of the lifting frame. A groove sleeve is fixedly connected to the side of the sleeve and communicates with the sleeve. The outer wall of the groove sleeve is provided with four through slots, and a folding rod is movably connected to the through slots. An abutting cutter head is installed on one side of the folding rod, and a vibrating ball is installed on the other side.

[0008] The outer wall of the sleeve is provided with a toothed groove on which a ring claw is engaged and slidable. A groove block is provided in the groove on one side of the ring claw. One end of the transmission column is fixed to the groove block in the groove of the ring claw.

[0009] Furthermore, the positioning control mechanism also includes a slider one mounted on the track conveyor plate, a transmission screw mounted on the track conveyor plate drives slider one to slide, slider one is slidably connected to slider one, and a rotating column clamp is mounted on the output end of the motor mounted on slider two, and one side of the rotating column clamp is locked to the abutment block.

[0010] Furthermore, a cylinder is installed on the side wall of the lifting frame, and the cylinder is connected to a plate on which the vibration cutting mechanism is placed, driving the housing to move up and down.

[0011] Furthermore, a conveyor chain assembly is installed on the top of the conveyor platform and between the positioning control mechanisms, and a transmission block matching the size of the cylindrical battery is provided on the top of the chain assembly.

[0012] Furthermore, the inner wall of the ring claw on the side of the slot sleeve has teeth and engages with the teeth on the outer wall of the slot sleeve. The fixed slot block at the end of the transmission column engages with the inner wall of the ring claw on one side and drives the ring claw to rotate when the teeth on the inner wall of the ring claw disengage from the slot sleeve. A spring is abutting against the inner wall of the folding rod.

[0013] Furthermore, a sealing cylinder is fixed to the rotating pin head of the position control mechanism on the other side, and an air vent is fitted on the sealing cylinder. The bottom of the air vent is connected to an air guide pipe one, and the bottom of the sealing cylinder is connected to an air guide pipe two.

[0014] The separation and vibration method for recovering lithium hexafluorophosphate-based electrolyte is as follows:

[0015] Safety Pre-treatment: Using professional constant current discharge equipment, the voltage of each cylindrical battery cell is discharged to below 0.5V, while checking the battery for bulging, leakage, damage, or burning marks.

[0016] Deep freezing and curing: The discharged battery cells are safely transferred from the discharge area to the freezing area. The batteries are slowly immersed in a custom-made low-temperature freezing chamber filled with liquid nitrogen. The immersion time must ensure that the core temperature of the battery drops below the freezing point of the electrolyte. The batteries are then transferred to the transmission equipment.

[0017] Disassembly and collection in an inert environment:

[0018] Cylindrical battery cells are placed one by one onto the conveyor chain assembly at the top of the conveyor table. The lifting frame lowers the casing to both sides of the cylindrical battery cell. The track conveyor plate drives the casing to clamp the cylindrical battery cell from both sides and gradually pushes the abutment block to contact both sides of the cylindrical battery cell. While clamping, the ring claw squeezes one side of the folding rod. As it rotates, the end of the folding rod abuts the cutter head against the side wall of the cylindrical battery cell cap. The rotating column clamp drives the cylindrical battery cell to rotate, and in conjunction with the fixed abutment cutter head, the cylindrical battery cell is circumferentially cut.

[0019] During the pullback process of the abutment block, the other side of the ring claw contacts the folding rod. At the same time, the groove block completes the groove abutment of the inner wall of the ring claw, and the teeth of the ring claw itself disengage from the shell. At this time, the abutment block rotates to make the ring claw rotate on the outer wall of the shell. The side wall of the folding rod is provided with a protrusion, which generates vibration when it contacts the ring claw. This vibration acts on the vibrating ball at the end of the folding rod, completing the vibration of the circumferential cylindrical battery cell shell and completing the work of removing the electrolyte frozen on the electrode and separator.

[0020] Electrolyte component collection: With the help of the lifting frame, the dismantled cylindrical battery cells are placed back onto the conveyor chain assembly. Under the operation of the other side track conveyor plate, the sealing cylinder on the vent hood seals and clamps the dismantled cylindrical battery cells. The sealing cylinder inside the vent hood is then heated to -20℃ to 0℃. The organic solvent in the electrolyte will sublimate or volatilize and be discharged into the condenser system through the second gas duct to re-solidify into a solid. Lithium hexafluorophosphate is then obtained from the battery solid residue.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. This invention improves the safety and operational efficiency of the lithium hexafluorophosphate (LiPF6) recycling process in batteries. Through integrated equipment design, it realizes automated and closed operation of LiPF6-based electrolyte recycling. The entire process is carried out in an inert gas environment, effectively isolating moisture and oxygen, preventing the decomposition of LiPF6 to produce harmful gases, and reducing safety risks. At the same time, the equipment integrates components such as a position control mechanism, a cutting and vibration mechanism, and a lifting frame to automatically complete the clamping, ring cutting, vibration separation, and heating recycling of batteries, reducing manual intervention, improving processing efficiency, and making it suitable for large-scale recycling scenarios.

[0023] 2. This invention improves the purity and resource utilization of electrolyte components. By deep freezing and solidifying the electrolyte, combined with excitation separation technology, the electrolyte frozen on the electrodes and diaphragm is effectively broken and detached. Subsequently, low-temperature baking and condensation are used to sublimate or volatilize the organic solvent under strictly controlled temperature and recover it through the condensation system. Lithium hexafluorophosphate remains in solid form, which is easy to separate. This method not only improves the purity of organic solvent recovery but also ensures the efficient extraction of lithium hexafluorophosphate and reduces resource waste. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the integrated disassembly and vibration separation equipment for the recovery of lithium hexafluorophosphate-based electrolyte of the present invention;

[0025] Figure 2 This is a schematic diagram of the top-removing structure of the integrated disassembly and vibration separation equipment for lithium hexafluorophosphate-based electrolyte recovery according to the present invention.

[0026] Figure 3 This is a top view schematic diagram of the integrated disassembly and vibration separation equipment for the recovery of lithium hexafluorophosphate-based electrolyte of the present invention;

[0027] Figure 4 This is a schematic diagram of the installation structure of the bottom positioning control mechanism of the lifting frame of the present invention;

[0028] Figure 5 This is a schematic diagram of the mounting ring claw structure on the side of the vibration cutting mechanism of the present invention;

[0029] Figure 6 This is a schematic cross-sectional view of the vibration cutting mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the installation structure of the sealing cylinder inside the air vent cover of the position control mechanism of the present invention.

[0031] In the diagram: 1. Conveyor table; 2. Sealing cover; 3. Conveyor chain assembly; 4. Position control mechanism; 401. Track conveyor plate; 402. Slider one; 403. Slider two; 404. Rotating column clamp; 5. Lifting frame; 6. Cutting and vibration mechanism; 601. Housing; 602. Groove sleeve; 603. Folding rod; 604. Abutting cutter head; 605. Vibrating ball; 7. Ring claw; 8. Groove block; 9. Abutting block; 10. Transmission column; 11. Air vent; 12. Air guide pipe one; 13. Sealing cylinder; 14. Air guide pipe two. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1-7 The present invention provides a technical solution:

[0034] Example 1: The entire process of low-temperature dismantling and electrolyte recycling of waste lithium batteries includes "safe pretreatment, deep freezing, inert environment dismantling, and component recovery." The core lies in controlling temperature and isolating the battery from gas throughout the process. Figure 1 As shown, the low-temperature battery dismantling operation is carried out in a closed environment. It relies on the transmission of the conveyor chain assembly 3, the position control mechanism 4 and the lifting frame 5 for joint adjustment. While completing the dismantling, it can also excite and separate the solidified electrolyte on the surface of the battery cell roll, accelerate the rapid sublimation or volatilization of organic solvents in the electrolyte during the subsequent low-temperature baking and condensation, and improve the purity of the collected lithium hexafluorophosphate-based electrolyte.

[0035] After initial screening, discharge, and freezing, the cylindrical batteries are placed inside a sealed enclosure 2. Moisture content inside the enclosure is simultaneously detected using inert gas. The conveyor chain assembly 3, including a chain and a top placement plate, guides the directionally moving cylindrical batteries to the bottom of the single-sided positioning mechanism 4 and the lifting frame 5. Figure 3 and Figure 4 As shown, the position control mechanism 4 consists of two sets arranged side by side. The cylindrical battery is subjected to vibration excitation during crushing on the front position control mechanism 4, followed by low-temperature baking.

[0036] Position control mechanism 4 is divided into track conveyor plate 401 and slider 2 403. Track conveyor plate 401 is driven by motor to rotate lead screw, which completes the forward and backward movement of slider 1 402. Slider 2 403 is slidably connected on slider 1 402. By the extension and retraction control of cylinder set on lifting frame 5, slider 2 403 is driven to slide on slider 1 402, which is conducive to clamping the cylindrical battery and detaching it from the transmission block.

[0037] Combination Figure 5 and Figure 6As shown, the main body of the cutting and vibration mechanism 6 includes a housing 601 and a slotted sleeve 602. The slotted sleeve 602 is located on the housing 601. Four through slots are opened on the outer wall of the slotted sleeve 602. When lifting and clamping the cylindrical battery, the track conveyor plate 401 drives the housing 601 to complete the clamping of the exposed outer side of the cylindrical battery. At the same time, while the cylinder on the lifting frame 5 lifts, the housing 601 continues to move inward until the abutment block 9 on the side of the slotted sleeve 602 contacts and clamps the end of the cylindrical battery. The cylindrical battery can be rotated by the abutment blocks 9 at both ends, and the battery ring cutting is completed in conjunction with the abutment cutter head 604.

[0038] Therefore, as Figure 6 As shown, a folding rod 603 is movably connected to the inner wall of the sleeve 602. An abutting head 604 is installed on the left side of the folding rod 603, and a vibrating ball 605 is installed on the right side. A ring claw 7 is installed on the outer wall of the sleeve 602. The ring claw 7 meshes with the straight tooth pattern on the outer wall of the sleeve 602, so that the ring claw 7 can slide on its surface. The front claw surface of the ring claw 7 is correspondingly set with the folding rod 603. The transmission column 10 set on the abutting block 9 is fixed to the groove block 8 in the groove of the inner wall of the ring claw 7. The ring claw 7 slides on the outer wall of the sleeve 602 by moving the abutting block 9 left and right.

[0039] like Figure 6 As shown, when the abutting block 9 moves to the right, the transmission column 10 presses the ring claw 7 to the right to slide, and at the same time, the claw surface of the ring claw 7 presses the folding rod 603, causing the left side of the folding rod 603 to move downward. The entire abutting block 9 moves to the right and will also contact the end face of the battery placed in the housing 601. Therefore, by controlling the position of the end of the folding rod 603 abutting the cutting head 604, and with the abutting block 9 moving to the right, the folding rod 603 can be rotated synchronously to press the cutting head 604 onto the battery ring surface. At the same time, the abutting block 9 completes the pressing and locking of the battery end face. Finally, the cutting head 604 remains stationary due to the rotation of the battery. The battery ring cutting operation is completed during the rotation, and the battery cap cut off can fall through the gap of the transmission column 10.

[0040] This is the entire abutment block 9 moving to the right. When it moves to the left, firstly, the slot block 8 on the transmission column 10 will engage with the groove on the side wall of the ring claw 7. As it continues to move, the claw surface begins to contact the folding rod 603. The vibrating ball 605 on the right side of the folding rod 603 rotates and presses against the battery ring surface. At the same time, a protrusion is set on the contact surface of the folding rod 603. The abutment block 9 drives the ring claw 7 to rotate at a constant speed. At this time, the groove on the inner wall of the ring claw 7 disengages from the slot sleeve 602. When the claw surface contacts the protrusion, the vibrating ball 605 at the end of the folding rod 603 contacts the battery ring surface. With the inner spring abutting against the folding rod 603, the vibrating ball 605, which is constantly impacting, breaks and separates the frozen electrolyte inside the battery cell roll, which is beneficial for subsequent heating and separation.

[0041] As the battery ring cutting and vibration operation are completed, the sliding block 402 and the lifting frame 5 moving in opposite directions drive the housing 601 to descend. After waiting for a suitable position, the processed cylindrical battery is placed back on the conveyor chain assembly 3 and moves to the bottom of the lifting frame 5 on the other side.

[0042] Example 2: Similarly... Figure 4 As shown, the difference is that the abutment block 9 at the end of the position control mechanism 4 is replaced by an air vent 11, and an upper sealing cylinder 13 is installed inside the air vent 11. The rotating column clamp 404 directly penetrates the air vent 11 and connects with the sealing cylinder 13. In conjunction with the movement of the track conveyor plate 401 and the lifting frame 5, the reconnection and closure of the two sides of the broken battery are completed.

[0043] In the low-temperature baking and condensation process, the collection of lithium hexafluorophosphate is not directly obtained through "condensation," but is divided into low-temperature removal of organic solvents and residue recovery. For the removal of organic solvents from the electrolyte, the battery sealing cover 2 is first removed using the rotary chuck 404, and then the air vent 11 continuously moves to remove the sealing cylinder 13, constructing a double-sealed structure. Figure 2 As shown, a first air duct 12 is connected to the bottom of the vent 11, and a second air duct 14 is connected to the bottom of the sealed cylinder 13. The battery cell assembly, which has been disassembled and is covered with solidified electrolyte, is placed in the sealed vent 11. Heating gas is introduced into the outer sealed cavity through the first air duct 12 to heat the outer wall of the sealed cylinder 13, slowly raising the temperature of the sealed cylinder 13 to the range of -20℃ to 0℃. At this temperature, the organic solvents in the electrolyte, such as dimethyl carbonate (DMC) and ethylene carbonate (EC), will sublimate or volatilize, while lithium hexafluorophosphate, due to its extremely low vapor pressure, will be mostly retained in the residue in solid form.

[0044] The sublimated or volatilized organic solvents are discharged through the gas guide tube 2 14, and a low-temperature vessel is installed at the end of the gas guide tube 2 14 to achieve the re-condensation of the sublimated or volatilized organic solvents.

[0045] For the recovery of remaining lithium hexafluorophosphate, the entire sealed cylinder 13 is opened, and with the help of the lifting frame 5 and the air vent 11, it falls onto the conveyor chain assembly 3. The broken battery is moved out of the entire sealed cover 2. Subsequently, the solubility of the broken lithium hexafluorophosphate battery in a specific anhydrous, alcohol-free, low-polarity solvent is used to separate it from the insoluble electrode material, thus completing the entire lithium hexafluorophosphate acquisition process. The entire process involves multiple extreme dangers such as high pressure, ultra-low temperature, highly toxic chemicals, and flammable and explosive materials. Therefore, relevant operators need to take corresponding precautions around the conveyor platform 1.

[0046] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The integrated equipment for the separation of lithium hexafluorophosphate-based electrolyte recovery and the decomposition of the shock, comprising a conveying table (1) and a sealed cover (2), the top of the conveying table (1) is provided with the sealed cover (2), characterized in that, The conveying table (1) top is provided with a position control mechanism (4), the position control mechanism (4) includes track conveying plate (401) arranged on the top of the conveying table (1), the abutting block (9) is arranged on the slider two (403) installed on the top of the track conveying plate (401), the transmission column (10) is symmetrically welded and fixed on the side of the abutting block (9). The lifting frame (5) is fixed on the top of the track conveying plate (401) on the conveying table (1), the cutting vibration mechanism (6) is symmetrically installed on the plate on the bottom of the lifting frame (5), the cutting vibration mechanism (6) includes the sleeve shell (601) slidably connected on the bottom of the lifting frame (5), the sleeve shell (601) is fixedly connected with the groove sleeve (602), and the groove sleeve (602) is communicated with the sleeve shell (601), four through grooves are arranged on the outer wall of the groove sleeve (602), and the folding rod (603) is movably connected on the through groove, the abutting cutter head (604) is installed on one side of the folding rod (603), and the vibration ball (605) is installed on the other side. The groove sleeve (602) is provided with a ring claw (7) on the outer wall of the groove sleeve (602), the groove block (8) is arranged in the groove on one side of the ring claw (7), and one end of the transmission column (10) is fixedly connected with the groove block (8) arranged in the groove of the ring claw (7).

2. The integrated apparatus for the disintegration and the separation of lithium hexafluorophosphate-based electrolyte recovery according to claim 1, characterized in that, The position control mechanism (4) further comprises a sliding block one (402) arranged on the track conveying plate (401), a transmission screw rod is arranged on the track conveying plate (401) to drive the sliding block one (402) to slide, the sliding block two (403) is slidably connected on the sliding block one (402), the output end of the motor is installed on the side of the sliding block two (403), and the rotating column chuck (404) is arranged on the output end of the motor, and the rotating column chuck (404) is locked with the abutting block (9) on one side.

3. The integrated apparatus for the disintegration and the separation of lithium hexafluorophosphate-based electrolyte recovery according to claim 2, characterized in that, The lifting frame (5) is provided with a gas cylinder on the side wall, and the gas cylinder is connected with the plate on which the cutting vibration mechanism (6) is arranged, so as to drive the sleeve shell (601) to move up and down.

4. The integrated apparatus for the decomposition and the separation of lithium hexafluorophosphate-based electrolyte recovery according to claim 3, characterized in that, The conveying chain table assembly (3) is installed on the top of the conveying table (1) and between the position control mechanisms (4), and the driving block corresponding to the size of the cylindrical battery is arranged on the top of the chain table.

5. The integrated apparatus for the disintegration and centrifugal separation of lithium hexafluorophosphate-based electrolyte recovery according to claim 4, characterized in that, The ring claw (7) arranged on the side of the groove sleeve (602) is provided with a tooth on the inner wall, and is engaged with the tooth on the outer wall of the groove sleeve (602), the groove block (8) fixed on the end of the transmission column (10) is engaged with the inner wall of the ring claw (7) on one side, and when the tooth on the inner wall of the ring claw (7) is separated from the groove sleeve (602), the ring claw (7) is rotated, and the spring is arranged on the inner wall of the folding rod (603).

6. The integrated apparatus for the disintegration and centrifugal separation of lithium hexafluorophosphate-based electrolyte recovery according to claim 5, characterized in that, The sealing cylinder (13) is fixed on the rotating column chuck (404) of the position control mechanism (4) on the other side, the air passing cover (11) is sleeved and installed on the sealing cylinder (13), the air guide pipe one (12) is communicated on the bottom of the air passing cover (11), and the air guide pipe two (14) is installed on the bottom of the sealing cylinder (13).

7. The integrated apparatus for the disintegration and centrifugal separation of lithium hexafluorophosphate-based electrolyte recovery according to claim 6, characterized in that, The disassembly and vibration separation method for recovering lithium hexafluorophosphate-based electrolyte is: Safety pretreatment: use professional constant current discharge equipment to discharge the voltage of each cylindrical battery monomer to below 0.5V, and check whether the battery is swollen, leaked, damaged, and ablated at the same time; Deep freeze and solidification: the discharged battery cell is safely transferred from the discharge area to the freezing area, and the battery is slowly immersed in a custom low-temperature freezer containing liquid nitrogen. The immersion time needs to ensure that the core temperature of the battery is below the freezing point of the electrolyte. Then it is transferred to the conveying equipment; Disassembly and collection in an inert environment: The cylindrical battery cell is placed on the conveying chain table assembly (3) on the top of the conveying table (1). The lifting frame (5) drives the sleeve shell (601) to descend to the sides of the cylindrical battery cell. The track conveying plate (401) drives the sleeve shell (601) to complete the clamping of the two sides of the cylindrical battery cell, and gradually pushes the abutting block (9) to contact the two sides of the cylindrical battery cell. While clamping, the ring claw (7) extrudes one side of the folding lever (603), and while rotating, the end of the folding lever (603) abuts the cutter head (604) and the side wall of the cylindrical battery cell cap. The rotating cylindrical chuck drives the cylindrical battery cell to rotate, and cooperates with the fixed cutter head (604) to contact, completing the circular cutting of the cylindrical battery cell. During the pulling process of the abutting block (9), the other side of the ring claw (7) contacts the folding lever (603), and at the same time, the groove block (8) completes the groove abutment of the inner wall of the ring claw (7). The ring claw (7) itself is separated from the sleeve shell (601). At this time, the abutting block (9) rotates to realize the rotation of the ring claw (7) outside the sleeve shell (601), while the side wall of the folding lever (603) is provided with a protrusion, which contacts the ring claw (7) and generates vibration, which acts on the vibrating ball (605) at the end of the folding lever (603), completing the vibration of the circularly cut cylindrical battery cell shell, and completing the work of separating the electrolyte frozen on the electrode and the separator. Electrolyte component collection: cooperate with the lifting frame (5) to place the disassembled cylindrical battery cell on the conveying chain table assembly (3), and under the action of the other side track conveying plate (401), complete the sealing and clamping of the disassembled cylindrical battery cell by the sealed cylinder (13) on the air passage cover (11). The sealed cylinder (13) in the air passage cover (11) is heated, and the heating container is heated to -20°C-0°C. The organic solvent in the electrolyte will sublimate or volatilize, and be discharged into the condenser system through the gas guide pipe (14) to re-solidify into a solid. The remaining battery components are directly immersed in anhydrous, degassed low-polarity solvent, and lithium hexafluorophosphate is obtained from the battery solid residue.

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