Cylindrical battery core disassembling device and method

Abstract

The invention discloses a cylindrical battery core disassembling device and method, and relates to the field of lithium battery disassembling and recycling, the cylindrical battery core disassembling device comprises a main body assembly, and the main body assembly is provided with a battery core rotating mechanism, a jacking mechanism, a rotary cutting mechanism, a drawing separation mechanism and a roll core ejection mechanism; the battery cell rotating mechanism is mounted at the lifting end of the jacking mechanism, and the cylindrical battery cell is mounted on the battery cell rotating mechanism; the rotary cutting mechanism, the drawing separation mechanism and the roll core ejection mechanism are respectively provided with a cutting station, a separation station and an ejection station which surround the battery core rotating mechanism, and the two ends of the cylindrical battery core can reach the cutting station, the separation station and the ejection station in the rotating process. The device has the advantage that the percent of pass and the production efficiency of disassembling the cylindrical battery cell are effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery disassembly and recycling, and in particular to a cylindrical battery cell disassembly device and method. Background Art

[0002] At present, in response to the carbon neutrality goal, new energy vehicles are vigorously developed, and the core of new energy vehicles, namely power batteries, has developed rapidly. In the process of battery cell production, unqualified batteries are inevitable. In order to understand the location and cause of unqualified batteries, it is necessary to disassemble and analyze the batteries. The disassembly of the batteries requires the separation of the core and the shell.

[0003] At present, the mainstream battery cells in the market are divided into square battery cells and cylindrical battery cells. Square battery cells are easier to disassemble due to their shape advantages. Cylindrical battery cells are difficult to operate due to their cylindrical shape, and the disassembly scrap rate is high. At the same time, it is easy to cause the risk of battery cell short circuit.

[0004] The patent document with the announcement number CN220462483U discloses a lithium-ion battery disassembly device, including an operating table, a turntable, a clamping assembly and a splitting assembly. The turntable is rotatably arranged on the operating table, the clamping assembly is arranged on the turntable, and the splitting assembly is fixed on the operating table and has a cutter. The device can be used for the disassembly of cylindrical cells. After the existing cylindrical cell disassembly device cuts the cylindrical cell, it is still difficult to separate the outer shell of the cylindrical cell from the winding core, and the disassembly qualification rate and production efficiency are low. Summary of the invention

[0005] The technical problem to be solved by the present invention is to improve the qualified rate and production efficiency of cylindrical battery core disassembly.

[0006] The present invention solves the above-mentioned technical problems through the following technical means: a cylindrical battery cell disassembly device, including a main body component, on which a battery cell rotation mechanism, a lifting mechanism, a rotary cutting mechanism, a pulling and separating mechanism and a core ejecting mechanism are arranged; the battery cell rotation mechanism is installed at the lifting end of the lifting mechanism, and the cylindrical battery cell is installed on the battery cell rotation mechanism; the rotary cutting mechanism, the pulling and separating mechanism and the core ejecting mechanism are respectively provided with a cutting station, a separating station and an ejecting station around the battery cell rotation mechanism, and both ends of the cylindrical battery cell can reach the cutting station, the separating station and the ejecting station during the rotation process.

[0007] Through the cooperation of the battery cell rotating mechanism, the lifting mechanism, the rotating cutting mechanism, the pulling and separating mechanism and the winding core ejecting mechanism, the device can rotate and cut the end covers at both ends of the cylindrical battery cell and then pull them apart, and eject the winding core out of the outer shell to complete the disassembly of the cylindrical battery cell, effectively improving the qualified rate and production efficiency of the cylindrical battery cell disassembly.

[0008] As an optimized technical solution, the main body assembly includes a base plate and a protective cover. The battery cell rotation mechanism, lifting mechanism, rotary cutting mechanism, pulling and separating mechanism and winding core ejection mechanism are all arranged on the base plate. The protective cover can cover the outside of the cylindrical battery cell during the disassembly process.

[0009] The protective cover is used to isolate harmful substances from harming the human body during the disassembly process, and at the same time to isolate the fire caused by short circuit of the battery cell, thereby improving the safety of disassembly of the cylindrical battery cell.

[0010] As an optimized technical solution, the main body component also includes a material receiving box, and both ends of the cylindrical battery cell can reach the material receiving position of the material receiving box during the rotation process.

[0011] The receiving box is used to collect the ejected cores, making it convenient to collect the cores after disassembly.

[0012] As an optimized technical solution, the battery cell rotation mechanism includes a battery cell base, a first mounting plate, a clamping block and a first rotating cylinder; the first mounting plate is mounted on the rotating end of the first rotating cylinder, and the battery cell base is mounted on the first mounting plate; the clamping block can be installed on the battery cell base in an openable and closable manner, and an installation space for a cylindrical battery cell is formed between the clamping block and the battery cell base.

[0013] Through the cooperation of the battery cell base, the first mounting plate, the clamping block and the first rotating cylinder, the cylindrical battery cell can be fixed, and the first rotating cylinder can drive the cylindrical battery cell to rotate, so that both ends of the cylindrical battery cell can reach the cutting station, the separation station and the ejection station.

[0014] As an optimized technical solution, the lifting mechanism includes a second mounting plate, a screw nut, a screw, a lifting plate and a second rotating cylinder; the second mounting plate and the second rotating cylinder are both mounted on the main assembly, and the lower end of the screw is mounted on the rotating end of the second rotating cylinder; a screw nut is mounted on the second mounting plate, and the middle part of the screw is threadedly connected to the screw nut; the lifting plate is arranged above the second mounting plate and is limitedly slidably matched with the second mounting plate, and the upper end of the screw is rotatably connected to the lifting plate.

[0015] Through the cooperation of the second mounting plate, the screw nut, the screw, the lifting plate and the second rotating cylinder, the battery cell rotating mechanism can be lifted, thereby adjusting the height of the cylindrical battery cell to ensure smooth disassembly of the battery cell.

[0016] As an optimized technical solution, the rotary cutting mechanism includes a rotary cutting base, a cutting assembly, a rotating shaft, a handwheel and a handle. The rotary cutting base is installed on the main assembly, the rotating shaft is rotatably connected to the rotary cutting base, the cutting assembly is installed on one end of the rotating shaft close to the cylindrical battery cell, the handwheel is installed on one end of the rotating shaft away from the cylindrical battery cell, and the handle is installed on the handwheel.

[0017] By rotating the cutting base, the cutting assembly, the rotating shaft, the hand wheel and the handle in cooperation with each other, the cutting assembly can perform rotational cutting on the end cover of the cylindrical battery cell by holding the handle and rotating the hand wheel to drive the rotating shaft to rotate.

[0018] As an optimized technical solution, the cutting assembly includes a connecting frame, a cutting knife, a knife holder and an adjusting bolt. The connecting frame is installed on the rotating shaft, the knife holder is arranged on a side of the connecting frame close to the rotating central axis and is limitedly slidably matched with the connecting frame, the cutting knife is installed on the knife holder, and the adjusting bolt is threadedly connected to the connecting frame and one end close to the rotating central axis abuts against the knife holder.

[0019] The position of the cutter can be finely adjusted by adjusting the bolt to ensure that the cutter maintains a certain distance from the internal winding core when cutting the cylindrical battery cell shell, avoiding fire caused by short circuit of the winding core due to damage, thereby improving safety.

[0020] As an optimized technical solution, the pulling and separation mechanism includes a pulling and separation base, a clamp, a clamp cylinder, a third mounting plate and a first telescopic cylinder; the pulling and separation base is mounted on the main assembly, the first telescopic cylinder is mounted on the pulling and separation base, and the third mounting plate is mounted on one end of the first telescopic cylinder close to the cylindrical battery cell; the clamp cylinder is mounted on the third mounting plate, and the clamp is mounted on the driving end of the clamp cylinder.

[0021] Through the cooperation of the pulling and separating base, the clamping claw, the clamping claw cylinder, the third mounting plate and the first telescopic cylinder, the cut end cover on the cylindrical battery core is clamped and then pulled, so that the end cover can be separated from the shell.

[0022] As an optimized technical solution, the core ejection mechanism includes a ejection block, a second telescopic cylinder and a core ejection base, the core ejection base is installed on the main body assembly, the second telescopic cylinder is installed on the core ejection base, and the ejection block is installed on the second telescopic cylinder near one end of the cylindrical battery cell.

[0023] Through the cooperation of the ejector block, the second telescopic cylinder and the core ejection base, the core inside the shell can be ejected, thereby completing the disassembly of the battery cell.

[0024] A cylindrical battery cell disassembly method, using the cylindrical battery cell disassembly device, comprises the following steps:

[0025] S1. Place the cylindrical battery cell on the battery cell rotating mechanism and fix it;

[0026] S2. Lift the battery cell rotating mechanism and the cylindrical battery cell to the disassembly height position through the lifting mechanism and then lock them. At this time, the two ends of the cylindrical battery cell are respectively located at the cutting station and the separation station;

[0027] S3, rotary cutting the end cap at the first end of the cylindrical battery cell by a rotary cutting mechanism;

[0028] S4, driving the cylindrical battery cell to rotate through the battery cell rotating mechanism, so that the first end of the cylindrical battery cell reaches the separation station, and the second end reaches the cutting station, and then the end cap of the first end that has been cut is pulled out of the shell through the pulling separation mechanism;

[0029] S5, rotary cutting the end cap at the second end of the cylindrical battery cell by means of a rotary cutting mechanism;

[0030] S6, driving the cylindrical battery cell to rotate by the battery cell rotating mechanism, so that the second end of the cylindrical battery cell reaches the separation station, and then pulling the cut end cap of the second end away from the shell by the pulling separation mechanism;

[0031] S7. The cylindrical battery cell is driven to rotate by the battery cell rotating mechanism, so that one end of the shell of the cylindrical battery cell after removing the end covers at both ends reaches the ejection station, and then the core ejection mechanism is used to eject the core inside the shell to complete the battery cell disassembly.

[0032] The method can rotary cut the end caps at both ends of the cylindrical battery cell and then pull them apart through the mutual cooperation of the battery cell rotating mechanism, the lifting mechanism, the rotary cutting mechanism, the pulling and separating mechanism and the winding core ejecting mechanism, and eject the winding core out of the outer shell to complete the disassembly of the cylindrical battery cell, thereby effectively improving the qualified rate and production efficiency of the cylindrical battery cell disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is an axonometric schematic diagram of the cylindrical battery cell disassembly device according to an embodiment of the present invention with the protective cover removed.

[0034] Figure 2 It is a front view schematic diagram of a cylindrical battery cell disassembly device according to an embodiment of the present invention.

[0035] Figure 3 It is an axonometric schematic diagram of the battery core rotation mechanism according to an embodiment of the present invention.

[0036] Figure 4 It is an axonometric schematic diagram of the jacking mechanism according to an embodiment of the present invention.

[0037] Figure 5It is a cross-sectional schematic diagram of the rotary cutting mechanism according to an embodiment of the present invention.

[0038] Figure 6 It is an axonometric schematic diagram of the pulling and separating mechanism according to an embodiment of the present invention.

[0039] Figure 7 Schematic diagram of the axonometric view of the core ejection mechanism according to the embodiment of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 , Figure 2 As shown, an embodiment of the present invention discloses a cylindrical battery cell disassembly device, including a main body component 1, a battery cell rotating mechanism 2, a lifting mechanism 3, a rotating cutting mechanism 4, a pulling and separating mechanism 5 and a winding core ejecting mechanism 6.

[0042] The main assembly 1 includes a base plate 11, a protective cover 12, a material receiving box 13, a button switch 14 and a valve island 15; a battery cell rotating mechanism 2, a lifting mechanism 3, a rotary cutting mechanism 4, a pulling and separating mechanism 5, a core ejecting mechanism 6, a button switch 14 and a valve island 15 are arranged on the upper part of the base plate 11; the protective cover 12 can cover the outside of the cylindrical battery cell 7 during the disassembly process; the protective cover 7 is used to isolate the harmful substances from the human body during the disassembly process, and at the same time isolate the fire caused by the short circuit of the battery cell, thereby improving the safety; a material receiving box 13 is installed on the inner side of the protective cover 12, and both ends of the cylindrical battery cell 7 can reach the material receiving position of the material receiving box 13 during the rotation process; the material receiving box 13 is used to collect the ejected core, so as to facilitate the removal of the core after the disassembly is completed; the button switch 14 and the valve island 15 are arranged on the outside of the protective cover 12, the button switch 14 is used to control all cylinder actions inside the device, and the valve island 15 is a control component composed of multiple electric control valves.

[0043] The lifting mechanism 3 is arranged in the middle position of the base plate 11, the battery cell rotating mechanism 2 is installed at the lifting end of the lifting mechanism 3, and the cylindrical battery cell 7 is installed on the battery cell rotating mechanism 2, and the battery cell rotating mechanism 2 can drive the cylindrical battery cell 7 to rotate horizontally; the rotary cutting mechanism 4, the pulling and separating mechanism 5 and the core ejecting mechanism 6 are respectively provided with a rotary cutting station, a pulling and separating station and a core ejecting station around the battery cell rotating mechanism 2, and both ends of the cylindrical battery cell 7 can reach the rotary cutting station, the pulling and separating station and the core ejecting station during the rotation process.

[0044] like Figure 3 As shown, the battery cell rotating mechanism 2 includes a battery cell base 21, a first mounting plate 22, a clamping block 23, a protective pad 24 and a first rotating cylinder 25; the first rotating cylinder 25 is installed at the lifting end of the jacking mechanism 3, and the rotating end of the first rotating cylinder 25 rotates in the horizontal direction; the first mounting plate 22 is installed at the rotating end of the first rotating cylinder 25, the battery cell base 21 is installed on the top of the first mounting plate 22, the clamping block 23 is installed on the top of the battery cell base 21 in an openable and closable manner and forms an installation space for the cylindrical battery cell 7 between the battery cell base 21; the inner side of the battery cell base 21 is provided with a protective pad 24, and the protective pad 24 is a rubber pad.

[0045] like Figure 4 As shown, the lifting mechanism 3 includes a connecting block 31, a second mounting plate 32, a screw nut 33, a first guide shaft 34, a bushing 35, a screw 36, a first bearing assembly 37, a lifting plate 38 and a second rotating cylinder (not shown); connecting blocks 31 are respectively provided on both sides of the bottom of the second mounting plate 32, and the second mounting plate 32 is installed above the top surface of the base plate 11 through the connecting blocks 31; the second rotating cylinder is arranged between the base plate 11 and the second mounting plate 32 and is installed on the top surface of the base plate 11, and the lower end of the screw 36 is installed on the rotating end of the second rotating cylinder; a screw nut 33 is installed in the middle position of the second mounting plate 32, and the middle part of the screw nut 33 is threadedly connected, and the screw 36 adopts a trapezoidal screw Screw rod; the lifting plate 38 is arranged above the second mounting plate 32 and a first bearing assembly 37 is installed in the middle position thereof, and the upper end of the screw rod 36 is rotatably connected to the lifting plate 38 through the first bearing assembly 37; bushings 35 are respectively installed on both sides of the screw nut 33 on the second mounting plate 32, and a first guide shaft 34 is slidably fitted in each bushing 35, and the upper end of each first guide shaft 4 is respectively fixedly connected to the lifting plate 38, and the lifting plate 38 is limitedly slidably fitted with the second mounting plate 32 through the first guide shaft 34; the second rotating cylinder drives the screw rod 36 to rotate, which can make the screw rod 36 rise, and drive the lifting plate 38 to lift the battery cell rotating mechanism 2, thereby adjusting the height of the cylindrical battery cell 7 to ensure smooth disassembly of the battery cell.

[0046] like Figure 1 , Figure 5As shown, the rotary cutting mechanism 4 includes a rotary cutting base 41, a cutting assembly 42, a rotating shaft 43, a second bearing assembly 44, a handwheel 45, a handwheel cover plate 46 and a handle 47; the rotary cutting base 41 is installed on the top surface of the base plate 11, the second bearing assembly 44 is installed on the upper part of the rotary cutting base 41, and the rotating shaft 43 is rotatably connected to the rotary cutting base 41 through the second bearing assembly 44; the cutting assembly 42 is installed on the rotating shaft 43 at one end close to the cylindrical battery cell 7, the handwheel 45 is installed on the rotating shaft 43 at one end away from the cylindrical battery cell 7 and is located outside the protective cover 12, and the handwheel cover plate 46 and the handle 47 are installed on the handwheel 45; holding the handle 47 and rotating the handwheel 45 drives the rotating shaft 43 to rotate, so that the cutting assembly 42 can perform rotary cutting on the end cover of the cylindrical battery cell 7.

[0047] The cutting assembly 42 includes a connecting frame 421, a cutting knife 422, a knife holder 423, an adjusting bolt 424, a second guide shaft 425, a spring 426, an equiaxial bolt 427 and a locking piece 428; the connecting frame 421 is mounted on the rotating shaft 43, the second guide shaft 425 is radially arranged along the rotating shaft 43 and slides through the connecting frame 421, the locking piece 428 is mounted on the end of the second guide shaft 425 away from the rotating center axis, the spring 426 is sleeved on the outer periphery of the second guide shaft 425 and is compressed between the locking piece 428 and the connecting frame 421, and the spring 426 is a rectangular spring; the knife holder 4 23 is arranged on one side of the connecting frame 421 close to the rotation center axis and is installed on the second guide shaft 425, so that the tool holder 423 and the connecting frame 421 can be limited and slidably matched, and the cutting knife 422 is installed on the tool holder 423 through the equiaxial bolt 427; the adjusting bolt 424 is threadedly connected to the connecting frame 421 and one end close to the rotation center axis abuts against the tool holder 423. The position of the cutting knife 422 can be finely adjusted by adjusting the bolt 424 to ensure that the cutting knife 422 keeps a certain distance from the internal winding core when cutting the outer shell of the cylindrical battery cell 7, so as to avoid the winding core from catching fire due to damage and short circuit, thereby improving safety.

[0048] The second bearing assembly 44 includes a bearing seat 441, a thrust bearing 442, a bearing spacer 443, a deep groove ball bearing 444 and a fixing ring 445. The bearing seat 441 is installed on the rotating cutting base 41. The deep groove ball bearing 444, the bearing spacer 443, the thrust bearing 442 and the fixing ring 445 are installed in sequence at both ends of the bearing seat 441 from the inside to the outside. The rotating shaft 43 passes through the bearing seat 441, the thrust bearing 442, the bearing spacer 443, the deep groove ball bearing 444 and the fixing ring 445.

[0049] like Figure 6As shown, the pulling and separating mechanism 5 includes a pulling and separating base 51, a clamping jaw 52, ​​a clamping jaw cylinder 53, a third mounting plate 54 and a first telescopic cylinder 55; the pulling and separating base 51 is mounted on the top surface of the bottom plate 11, and the first telescopic cylinder 55 is mounted on the upper part of the pulling and separating base 51; the telescopic direction of the first telescopic cylinder 55 is along the direction of approaching or moving away from the cylindrical battery cell 7, and the third mounting plate 54 is mounted on one end of the first telescopic cylinder 55 close to the cylindrical battery cell 7; the clamping jaw cylinder 53 is mounted on the third mounting plate 54, and the clamping jaw 52 is mounted on the driving end of the clamping jaw cylinder 53; after the clamping jaw cylinder 53 drives the clamping jaw 52 to clamp the cut end cover on the cylindrical battery cell 7, the first telescopic cylinder 55 drives the clamping jaw 52 to move in the direction away from the cylindrical battery cell 7 to pull the end cover, so that the end cover can be separated from the shell.

[0050] like Figure 7 As shown, the core ejection mechanism 6 includes a top block 61, a second telescopic cylinder 62 and a core ejection base 63; the core ejection base 63 is installed on the top surface of the bottom plate 11, and the second telescopic cylinder 62 is installed on the upper part of the core ejection base 63; the telescopic direction of the second telescopic cylinder 62 is along the direction of approaching or moving away from the cylindrical battery cell 7, and the top block 61 is installed on the second telescopic cylinder 6 at one end close to the cylindrical battery cell 7; the second telescopic cylinder 62 drives the top block 61 to enter the shell of the cylindrical battery cell 7, and can eject the core inside the shell to the receiving box 13, thereby completing the disassembly of the battery cell.

[0051] The embodiment of the present invention further discloses a cylindrical battery cell disassembly method, using the cylindrical battery cell disassembly device, comprising the following steps: S1, placing the cylindrical battery cell 7 between the battery cell base 21 and the clamping block 23 and fixing them;

[0052] S2, lift the battery cell rotating mechanism 2 and the cylindrical battery cell 7 to the disassembly height position through the lifting mechanism 3 and lock them. At this time, the two ends of the cylindrical battery cell 7 are respectively located at the cutting station and the separation station;

[0053] S3, after adjusting the cutting blade 422 to a suitable position by adjusting the bolt 424, close the protective cover 12, and manually operate the hand wheel 45 to drive the cutting assembly 42 to rotate and cut the end cap of the first end of the cylindrical battery cell 7;

[0054] S4, control the battery cell rotating mechanism 2 through the button box 14 to drive the cylindrical battery cell 7 to rotate 180°, so that the first end of the cylindrical battery cell 7 reaches the separation station, and the second end reaches the cutting station, and then control the pulling and separating mechanism 5 through the button box 14 to pull the cut end cap of the first end away from the shell;

[0055] S5, open the protective cover 12, adjust the cutting knife 422 to a suitable position by adjusting the bolt 424 again, close the protective cover 12 again, and manually operate the hand wheel 45 to drive the cutting assembly 42 to rotate and cut the end cap of the second end of the cylindrical battery cell 7;

[0056] S6, control the battery cell rotating mechanism 2 through the button box 14 to drive the cylindrical battery cell 7 to rotate 180°, so that the second end of the cylindrical battery cell 7 reaches the separation station, and then control the pulling and separating mechanism 5 through the button box 14 to pull the cut end cap of the second end away from the shell;

[0057] S7, control the battery cell rotation mechanism 2 through the button box 14 to drive the cylindrical battery cell 7 to rotate 90°, so that one end of the shell of the cylindrical battery cell 7 after removing the end covers at both ends reaches the ejection station, and then control the core ejection mechanism 6 through the button box 14 to eject the core inside the shell to the receiving box 13 to complete the battery cell disassembly.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cylindrical battery cell disassembly device, characterized in that: It includes a main body component, on which are arranged a battery cell rotating mechanism, a lifting mechanism, a rotating cutting mechanism, a pulling and separating mechanism and a winding core ejecting mechanism; the battery cell rotating mechanism is installed at the lifting end of the lifting mechanism, and the cylindrical battery cell is installed on the battery cell rotating mechanism; the rotating cutting mechanism, the pulling and separating mechanism and the winding core ejecting mechanism are respectively provided with a cutting station, a separating station and an ejecting station around the battery cell rotating mechanism, and both ends of the cylindrical battery cell can reach the cutting station, the separating station and the ejecting station during the rotation process.

2. The cylindrical battery cell disassembly device according to claim 1, characterized in that: The main body assembly includes a base plate and a protective cover. The battery cell rotating mechanism, lifting mechanism, rotary cutting mechanism, pulling and separating mechanism and winding core ejecting mechanism are all arranged on the base plate. The protective cover can cover the outside of the cylindrical battery cell during the disassembly process.

3. The cylindrical battery cell disassembly device according to claim 2, characterized in that: The main body component also includes a material receiving box, and both ends of the cylindrical battery core can reach the material receiving position of the material receiving box during the rotation process.

4. The cylindrical battery cell disassembly device according to claim 1, characterized in that: The battery cell rotation mechanism includes a battery cell base, a first mounting plate, a clamping block and a first rotating cylinder; the first mounting plate is mounted on the rotating end of the first rotating cylinder, and the battery cell base is mounted on the first mounting plate; the clamping block is mounted on the battery cell base in an openable and closable manner, and an installation space for a cylindrical battery cell is formed between the clamping block and the battery cell base.

5. The cylindrical battery cell disassembly device according to claim 1, characterized in that: The lifting mechanism includes a second mounting plate, a screw nut, a screw, a lifting plate and a second rotating cylinder; the second mounting plate and the second rotating cylinder are both mounted on the main assembly, and the lower end of the screw is mounted on the rotating end of the second rotating cylinder; a screw nut is mounted on the second mounting plate, and the middle part of the screw is threadedly connected to the screw nut; the lifting plate is arranged above the second mounting plate and is limitedly slidably matched with the second mounting plate, and the upper end of the screw is rotatably connected to the lifting plate.

6. The cylindrical battery cell disassembly device according to claim 1, characterized in that: The rotary cutting mechanism includes a rotary cutting base, a cutting assembly, a rotating shaft, a handwheel and a handle. The rotary cutting base is installed on the main body assembly. The rotating shaft is rotatably connected to the rotary cutting base. The cutting assembly is installed on one end of the rotating shaft close to the cylindrical battery cell. The handwheel is installed on one end of the rotating shaft away from the cylindrical battery cell. The handle is installed on the handwheel.

7. The cylindrical battery cell disassembly device according to claim 6, characterized in that: The cutting assembly includes a connecting frame, a cutting knife, a knife holder and an adjusting bolt; the connecting frame is installed on the rotating shaft, and the second guide shaft is radially arranged along the rotating shaft and slides through the connecting frame; the locking plate is installed on the outer end of the second guide shaft, and the spring is sleeved on the outer periphery of the second guide shaft and is compressed between the locking plate and the connecting frame; the knife holder is installed on the inner end of the second guide shaft, and the cutting knife is installed on the knife holder; the adjusting bolt is threadedly connected to the connecting frame and the inner end abuts against the knife holder.

8. The cylindrical battery cell disassembly device according to claim 1, characterized in that: The pulling and separating mechanism comprises a pulling and separating base, a clamping claw, a clamping claw cylinder, a third mounting plate and a first telescopic cylinder; the pulling and separating base is mounted on the main assembly, the first telescopic cylinder is mounted on the pulling and separating base, and the third mounting plate is mounted on one end of the first telescopic cylinder close to the cylindrical battery cell; the clamping claw cylinder is mounted on the third mounting plate, and the clamping claw is mounted on the driving end of the clamping claw cylinder.

9. The cylindrical battery cell disassembly device according to claim 1, characterized in that: The core ejection mechanism includes a ejection block, a second telescopic cylinder and a core ejection base, the core ejection base is installed on the main body assembly, the second telescopic cylinder is installed on the core ejection base, and the ejection block is installed on the second telescopic cylinder near one end of the cylindrical battery core.

10. A method for disassembling a cylindrical battery cell, using the cylindrical battery cell disassembly device according to any one of claims 1 to 9, comprising the following steps: S1. Place the cylindrical battery cell on the battery cell rotating mechanism and fix it; S2. Lift the battery cell rotating mechanism and the cylindrical battery cell to the disassembly height position through the lifting mechanism and then lock them. At this time, the two ends of the cylindrical battery cell are respectively located at the cutting station and the separation station; S3, rotary cutting the end cap at the first end of the cylindrical battery cell by a rotary cutting mechanism; S4, driving the cylindrical battery cell to rotate through the battery cell rotating mechanism, so that the first end of the cylindrical battery cell reaches the separation station, and the second end reaches the cutting station, and then the end cap of the first end that has been cut is pulled out of the shell through the pulling separation mechanism; S5, rotary cutting the end cap at the second end of the cylindrical battery cell by means of a rotary cutting mechanism; S6, driving the cylindrical battery cell to rotate by the battery cell rotating mechanism, so that the second end of the cylindrical battery cell reaches the separation station, and then pulling the cut end cap of the second end away from the shell by the pulling separation mechanism; S7. The cylindrical battery cell is driven to rotate by the battery cell rotating mechanism, so that one end of the shell of the cylindrical battery cell after removing the end covers at both ends reaches the ejection station, and then the core ejection mechanism is used to eject the core inside the shell to complete the battery cell disassembly.

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