Roll core separation equipment and separation method

Abstract

The invention belongs to the technical field of lithium battery recycling, and particularly relates to roll core separation equipment and a separation method, a clamping jaw is used for clamping a roll core and driving the roll core to turn over, and a laser cutting head of a laser module is used for cutting the bonding and fixing position of the tail end of the roll core and punching a diaphragm on the surface layer of the roll core; the first conveying device is used for conveying an unfolded roll core, the second conveying device is provided with a first negative pressure adsorption module used for adsorbing a pole piece, and the two diaphragm winding devices are located between the first conveying device and the second conveying device; the second negative pressure adsorption module and the scraper module are adjacently arranged and can move synchronously, the second negative pressure adsorption module can rotate, and the second negative pressure adsorption module and the scraper module can move relatively. According to the invention, the diaphragm and the pole piece can be efficiently and orderly separated, the separation is more thorough, the adhesion of the diaphragm or an adhesive tape on the surface of the pole piece is effectively reduced, the workload of subsequent secondary separation is reduced, the recovery efficiency of the pole piece is improved, and the overall structure complexity is reduced.

Description

Technical Field

[0001] This invention belongs to the field of lithium battery recycling technology, specifically relating to a core separation device and separation method. Background Technology

[0002] With the explosive growth of the new energy vehicle and electrochemical energy storage industries, efficient recovery of strategic resources such as lithium, cobalt, and nickel has become an industry necessity. Before material recycling, thoroughly separating the positive / negative electrode sheets from the separator in a battery cell can prevent metal impurity contamination, improve recovery rates, reduce energy consumption, and decrease emissions of waste. Traditional separation methods typically involve manual disassembly, which is inefficient. While some separation equipment exists, the reliability of some devices during separator separation is low, sometimes requiring manual intervention or assistance. Furthermore, separator separation and subsequent movement guidance after roll separation generally employ different clamps or peeling mechanisms, resulting in a large number of clamps or peeling mechanisms and a complex overall structure for the separation equipment. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a separation device and separation method that achieves efficient and orderly separation between the diaphragm and the electrode, and the separation is more thorough, effectively reducing the adhesion of the diaphragm or tape on the electrode surface, reducing the workload of subsequent secondary separation, improving the electrode recycling efficiency, and reducing the complexity of the overall core separation structure.

[0004] The present invention provides a core separation device, including a pretreatment device, a first conveying device, a second conveying device, a clamping device, and two diaphragm winding devices. The pretreatment device includes a laser module and grippers. The grippers are used to hold the core and drive the core to flip over. The laser cutting head of the laser module is used to cut the bonding and fixing points at the ends of the core and to punch holes in the diaphragm on the surface of the core. The first conveying device is used to convey the unfolded core, and the second conveying device is equipped with a negative pressure adsorption module for adsorbing the electrode sheet. Two diaphragm winding devices are located between the first conveying device and the second conveying device, and are spaced apart along the height direction between the first conveying device and the second conveying device. The clamping device includes a second negative pressure adsorption module and a scraper module. The second negative pressure adsorption module and the scraper module are arranged adjacent to each other and can move synchronously. The second negative pressure adsorption module can be rotated so that the adsorption end of the second negative pressure adsorption module faces the scraper module or faces other directions. The second negative pressure adsorption module and the scraper module can move relative to each other so that the second negative pressure adsorption module and the scraper module move closer to each other or further away from each other.

[0005] Furthermore, the gripper includes two opposing and parallel gripping arms, each of which has several push rods on its opposite side, and the ends of the push rods are pointed.

[0006] Furthermore, the gripper also includes a fixed plate, a linear drive mechanism, two connecting seats, and two rotating mechanisms. The two gripping arms are rotatably mounted on the two connecting seats, and the two connecting seats are slidably mounted on the fixed plate. The linear drive mechanism is used to drive the two gripping arms to move relative to each other. The two rotating mechanisms are correspondingly mounted on the two connecting seats, and each rotating mechanism is directly or via transmission connected to the gripping arm on its respective connecting seat.

[0007] Furthermore, the pretreatment device also includes a placement table for placing the core, and the placement table or laser cutting head is equipped with a nitrogen nozzle.

[0008] Furthermore, the negative pressure adsorption module two includes an adsorption support, several suction cups, and several pressure heads. The suction cups and pressure heads are all arranged on one side of the adsorption support in an alternating manner, and the suction cups form the adsorption end of the negative pressure adsorption module two.

[0009] Furthermore, the negative pressure adsorption module two is driven to rotate by the rotating mechanism two, and the negative pressure adsorption module two and the scraper module are driven to move relative to each other by the linear drive mechanism two.

[0010] Furthermore, the scraper module includes a mounting plate, a scraper support, and a scraper body. The mounting plate is used to mount the scraper module and has mounting holes. One end of the scraper support has an arc-shaped hole, through which fasteners pass and connect to the mounting holes. The scraper body is located on one side of the scraper support. When the suction end of the negative pressure adsorption module faces the scraper module, the side of the scraper body is positioned opposite to several suction cups.

[0011] Furthermore, it also includes a multi-axis moving mechanism for driving the negative pressure adsorption module 2 and the scraper module to move synchronously in at least two directions.

[0012] Furthermore, it also includes a pressing device, which includes a lifting mechanism and a pressing body. The pressing body is located above the conveying device, and the lifting mechanism is used to drive the pressing body to move toward the surface of the conveying device.

[0013] The present invention also provides a core separation method using the core separation device described above, the separation method comprising the following steps: S1. The adhesive fixing point at the end of the core is cut by the laser cutting head to loosen the end of the core. The core is then flipped over by the gripper. The outermost diaphragm of the core is then perforated by the laser cutting head to form a perforated area. S2. The end of the core is held by the clamping device and moved along the surface of the first conveying device to the surface of the second conveying device. The lower electrode sheet is adsorbed by the negative pressure adsorption module one, and the upper electrode sheet is adsorbed along the perforated area by the negative pressure adsorption module two. The clamping device is moved to separate the diaphragm above the lower electrode sheet and place the upper electrode sheet on the first conveying device. S3. The diaphragm above the lower electrode sheet is scraped by the scraper module. The negative pressure adsorption module one stops adsorbing the lower electrode sheet. The negative pressure adsorption module two adsorbs and moves the diaphragm above the lower electrode sheet so that it is wound onto the diaphragm winding device below. S4. The upper electrode sheet on the conveying device 1 is clamped by the clamping device and placed on the conveying device 2. The negative pressure adsorption module 1 adsorbs the upper electrode sheet. The diaphragm above the upper electrode sheet is scraped by the scraper module. Then the negative pressure adsorption module 2 adsorbs and moves the diaphragm so that it is wound onto the diaphragm winding device above. The negative pressure adsorption module 1 stops adsorbing the upper electrode sheet. S5. Conveying device one and conveying device two continue to convey, and two diaphragm winding devices continue to wind up the diaphragm to complete the separation of the upper electrode, lower electrode and diaphragm.

[0014] The beneficial effects of this invention are as follows: the processing stage employs laser cutting, which offers higher cutting precision and accurately cuts the adhesive fixing points at the ends of the core. Its energy is more concentrated, precisely and effectively targeting the cut position. This ensures that the adhesive fixing points at the ends of the core are effectively cut, while preventing the diaphragm or tape near the cut point from melting and adhering tightly to the electrode. This facilitates the complete separation of the electrode and diaphragm and reduces the residue of diaphragm and tape on the electrode after separation. Furthermore, the diaphragm can be perforated on the core surface, and then the upper electrode is adsorbed through the perforated area by the negative pressure adsorption module, achieving separation between the upper and lower electrode layers and the diaphragm above the lower electrode. This enables efficient and orderly separation between the diaphragm and the electrode, resulting in more thorough separation, effectively reducing the adhesion of diaphragm or tape to the electrode surface, reducing the workload of subsequent secondary separation, and improving electrode recycling efficiency. Because the diaphragm is peeled off and the movement of the diaphragm, electrode sheet, and loose core end is guided by a single clamping device, the number of clamps and peeling mechanisms in the core separation equipment is reduced, thus reducing the overall structural complexity of the separation equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the core separation device of the present invention.

[0016] Figure 2 This is a schematic diagram of the pretreatment device of the present invention.

[0017] Figure 3 For the present invention Figure 2 Enlarged view of point A in the image.

[0018] Figure 4 This is a schematic diagram of the clamping device of the present invention.

[0019] Figure 5 For the present invention Figure 4 Enlarged view of point B in the image.

[0020] In the diagram: 1. Pre-treatment device; 11. Placement platform; 12. Laser module; 121. Laser cutting head; 13. Gripper; 131. Fixing plate; 132. Lead screw; 133. Motor; 134. Connecting seat; 135. Gripping arm; 1351. Top rod; 1352. Support column; 136. Positioning plate; 1361. Through hole; 137. Rotating mechanism one; 2. Conveying device one; 3. Conveying device two; 4. Clamping device; 41. Negative pressure adsorption module two; 411. Adsorption support; 412. Suction cup; 413. Press head; 42. Scraper module; 421. Mounting plate; 422. Scraper support; 4221. Arc hole; 423. Scraper body; 43. Rotating mechanism two; 44. Linear drive mechanism two; 45. Fixing seat; 46. Multi-axis moving mechanism; 5. Diaphragm winding device; 6. Pressing block device. Detailed Implementation

[0021] like Figures 1-5 As shown, this invention provides a core separation device, including a pretreatment device 1, a first conveying device 2, a second conveying device 3, a clamping device 4, and two diaphragm winding devices 5. The pretreatment device 1 includes a laser module 12 and grippers 13. The grippers 13 are used to clamp the core and drive it to rotate, causing the core to flip. The laser module 12 is located above the grippers 13, with its laser cutting head 121 facing downwards, used to cut the adhesive fixing points at the ends of the core and to perforate the diaphragm on the surface of the core. The first conveying device 2 and the second conveying device 3 are sequentially downstream of the pretreatment device 1. The first conveying device 2 is used to convey the unfolded core, and the second conveying device 3 is equipped with a negative pressure adsorption module 1 for adsorbing the electrode sheets. The two diaphragm winding devices 5 are located between the first conveying device 2 and the second conveying device 3, and are spaced apart along the height direction between them, meaning one diaphragm winding device 5 is located above the other.

[0022] The clamping device 4 includes a second negative pressure adsorption module 41 and a scraper module 42. The second negative pressure adsorption module 41 and the scraper module 42 are arranged adjacent to each other, that is, the scraper module 42 is located on one side of the second negative pressure adsorption module 41. The second negative pressure adsorption module 41 and the scraper module 42 can move synchronously. The second negative pressure adsorption module 41 can be rotated to adjust the orientation of its adsorption end, so that the adsorption end of the second negative pressure adsorption module 41 faces the scraper module 42 or faces other directions. The second negative pressure adsorption module 41 and the scraper module 42 can move relative to each other, so that the second negative pressure adsorption module 41 and the scraper module 42 move closer to each other or further away from each other. When the adsorption end of the second negative pressure adsorption module 41 faces the scraper module 42 and the second negative pressure adsorption module 41 and the scraper module 42 are close to each other, the negative pressure adsorption module and the scraper module 42 form a clamping structure.

[0023] In use, the laser cutting head 121 first cuts the adhesive fixing point at the end of the core, loosening the core end. The gripper 13 then drives the core to flip over. Next, the laser cutting head 121 punches holes in the outermost diaphragm of the core, forming a perforated area. The adsorption module 2 and scraper module 42 hold the end of the core and move it along the surface of conveyor device 2 to conveyor device 3. At this point, the perforated diaphragm is at the top, and the unfolded core has a structure of diaphragm-electrode-diaphragm-electrode from top to bottom. The lower electrode is adsorbed by the negative pressure adsorption module 1, and the upper electrode is adsorbed along the perforated area by the negative pressure adsorption module 2 41. The clamping device 4 is moved to separate the upper electrode from the diaphragm above the lower electrode, and the upper electrode is placed on conveyor device 2 for subsequent processing. At this point, the lower electrode sheet is still adsorbed onto the surface of the conveying device 2 3 by the negative pressure adsorption module 1. The diaphragm above the lower electrode sheet is scraped by the scraper module 42, and the negative pressure adsorption module 1 stops adsorbing the lower electrode sheet. The negative pressure adsorption module 2 41 then adsorbs and moves the diaphragm above the lower electrode sheet so that it is wound onto the diaphragm winding device 5 below. At this time, the lower electrode sheet moves with the diaphragm between the conveying device 1 2 and the conveying device 2 3. The upper electrode sheet on the conveying device 1 2 is clamped by the clamping device 4 and placed onto the conveying device 2 3. The negative pressure adsorption module 1 adsorbs the upper electrode sheet. The scraper module 42 scrapes the diaphragm above the upper electrode sheet, and the negative pressure adsorption module 2 41 then adsorbs and moves the diaphragm so that it is wound onto the diaphragm winding device 5 above. The negative pressure adsorption module 1 then stops adsorbing the upper electrode sheet. Conveying device 1 2 and conveying device 2 3 continue to convey, and two diaphragm winding devices 5 continue to wind up the diaphragm. With the continuous winding of the two layers of diaphragm and the continuous conveying of conveying device 1 2 and conveying device 2 3, the separation of the upper electrode sheet, the lower electrode sheet and the diaphragm is completed. The upper electrode sheet moves forward along the surface of conveying device 2 3 and is sent out, while the lower electrode sheet falls between conveying device 1 2 and conveying device 2 3 and is sent out.

[0024] The upper electrode and the lower electrode are either positive or negative electrodes, and the two are different. When the upper electrode is a positive electrode, the lower electrode is a negative electrode.

[0025] Based on the core separation equipment of the present invention, the pretreatment stage adopts laser cutting, which has higher cutting precision and can accurately cut the bonding and fixing parts at the end of the core. Its energy is more concentrated and can be accurately and effectively applied to the target cutting position. While ensuring that the bonding and fixing parts at the end of the core are effectively cut, it avoids the diaphragm or tape near the cutting point from melting and sticking tightly to the electrode sheet. This is more conducive to the complete separation of the electrode sheet and the diaphragm and reduces the residue of the diaphragm and tape on the electrode sheet after separation. At the same time, the clamping claw 13 can be used to adjust the posture of the core. With the help of the laser cutting head 121, the diaphragm can be perforated on the surface of the core. Then, the upper electrode sheet is adsorbed through the perforated area by the negative pressure adsorption module 41, realizing the separation of the upper electrode sheet from the lower electrode sheet and the diaphragm above the lower electrode sheet. Based on the clamping device 4, the diaphragm or electrode can be adsorbed solely by the negative pressure adsorption module 41, or it can be used in conjunction with the scraper module 42 as a clamping structure to satisfy the clamping operations of the diaphragm, electrode, and loose core ends. Thus, the diaphragm can be peeled off and the movement of the diaphragm, electrode, and loose core ends can be guided by a single clamping device 4. Combined with the conveying device 2, the conveying device 3, and the two diaphragm winding devices 5, efficient and orderly separation between the diaphragm and the electrode is achieved, and the separation is more thorough, effectively reducing the adhesion of diaphragm or tape to the electrode surface, reducing the workload of subsequent secondary separation, and improving the electrode recovery efficiency. Since the diaphragm peeling and the movement of the diaphragm, electrode, and loose core ends are guided by a single clamping device 4, the number of clamps and peeling mechanisms in the core separation equipment is reduced, thus reducing the overall structural complexity of the separation equipment.

[0026] The pretreatment device 1 further includes a placement platform 11 for placing the roll core conveyed from the previous station. The laser module 12 and the gripper 13 are both located above the placement platform 11. The gripper 13 includes a linear drive mechanism and two gripping arms 135, which are arranged opposite each other and parallel. The linear drive mechanism is used to drive the two gripping arms 135 to move closer or further apart. Based on this arrangement, the two gripping arms 135 clamp the roll core through relative movement in a parallel state. Compared to the hinged movement of the gripping arms 135, the gripper 13 of the present invention clamps the roll core more stably and effectively.

[0027] In a preferred embodiment of the present invention, each of the two clamping arms 135 has a plurality of push rods 1351 on its opposite sides, and the ends of the push rods 1351 are pointed. In this embodiment, the two clamping arms 135 clamp the two sides of the core through the ends of the push rods 1351. While ensuring stable and effective clamping of the core, the rotation of the core by the rotating mechanism 137 can form a release structure for the core to unfold. When applied to a core separation device, the additional core release structure can be eliminated, reducing the structural complexity of the core separation device.

[0028] The clamping arm 135, which has several push rods 1351, is also connected to a positioning plate 136 via a support column 1352. The positioning plate 136 has several through holes 1361, through which the ends of the push rods 1351 pass. This arrangement provides support for the push rods 1351 and improves their structural stability.

[0029] The gripper 13 also includes a fixing plate 131, and two gripping arms 135 are slidably disposed on the fixing plate 131 to guide the movement of the two gripping arms 135 and improve the stability of the two gripping arms 135 when they move.

[0030] The linear drive mechanism includes a lead screw 132 and a motor 133. The lead screw 132 is rotatably mounted on a fixed plate 131, and the threads at both ends of the lead screw 132 are in opposite directions. Two clamping arms 135 are correspondingly mounted at both ends of the lead screw 132 via threaded engagement. The motor 133 is mounted on the fixed plate 131, and the output end of the motor 133 is directly connected to one end of the lead screw 132, or connected via a transmission structure. Based on this configuration, while ensuring the movement accuracy of the two clamping arms 135, both clamping arms 135 can be simultaneously driven by a single linear drive mechanism to move closer or further apart, reducing the number of linear drive mechanisms required and thus lowering the overall structural complexity and cost.

[0031] The gripper 13 further includes two connecting seats 134, and two gripping arms 135 are correspondingly disposed on the two connecting seats 134. One connecting seat 134 is threadedly connected to one end of the lead screw 132, and the other connecting seat 134 is connected to the other end of the lead screw 132, so that the two gripping arms 135 are correspondingly disposed at both ends of the lead screw 132 through threaded engagement. Slider blocks are provided on the two connecting seats 134, and slide rails are provided on the fixing plate 131. The sliders on the two connecting seats 134 are slidably engaged with the slide rails, so that the two gripping arms 135 are slidably disposed on the fixing plate 131.

[0032] In a preferred embodiment of the present invention, two clamping arms 135 are rotatably mounted on two connecting seats 134. Two rotating mechanisms 137 are provided, each mounted on one of the two connecting seats 134. Each rotating mechanism 137 is directly connected to the clamping arm 135 on its corresponding connecting seat 134, or is connected via a transmission structure. Based on this configuration, the rotating mechanism 137 drives the core to rotate by driving the two clamping arms 135, eliminating the need for the gripper 13 to rotate as a whole. This avoids interference or obstruction problems that occur when the gripper 13 rotates as a whole, and also facilitates core release. This rotating mechanism can be a rotary cylinder or a motor module.

[0033] Specifically, this invention employs a laser with a wavelength of 200-1000nm. A nitrogen nozzle is provided on the placement stage 11 or the laser cutting head 121. The nitrogen nozzle is connected to an external nitrogen source. During laser cutting, nitrogen is introduced for protection, and the temperature of the cutting area is controlled in real time within the range of 50-80℃, further avoiding the problem of diaphragm and tape melting caused by heat concentration.

[0034] Both conveying device 2 and conveying device 3 are belt conveyors. Conveying device 3 has several adsorption holes on its conveyor belt. The negative pressure adsorption module is located inside conveying device 3, with its negative pressure output end facing upwards. This negative pressure adsorption module can be a negative pressure generator or a vacuum mechanism. Conveying device 2 is a conventional belt conveyor, or a belt conveyor with the same structure as conveying device 3, meaning that conveying device 2 also has several adsorption holes on its conveyor belt and a negative pressure adsorption module is also located inside it.

[0035] The present invention also includes a pressing device 6, which includes a lifting mechanism and a pressing body. The pressing body is located above the first conveying device 2, and the lifting mechanism is used to drive the pressing body to move toward the surface of the first conveying device 2. When the upper electrode sheet is placed on the first conveying device 2, the lifting mechanism drives the pressing body to move toward the surface of the first conveying device 2 to press down the upper electrode sheet, maintain its position on the first conveying device 2, and prevent it from sliding down. The clamping device 4 holds the upper electrode sheet on the first conveying device 2 and places it before the second conveying device 3. The lifting mechanism drives the pressing body to move upward to release the upper electrode sheet.

[0036] The negative pressure adsorption module includes an adsorption support 411 and several suction cups 412. Several suction cups 412 are spaced apart and positioned on one side of the adsorption support 411, forming the adsorption end of the negative pressure adsorption module. This arrangement ensures that the adsorption end of the negative pressure adsorption module has a certain length, guaranteeing stable and reliable adsorption of the diaphragm and electrode in the lateral direction. Each suction cup 412 is connected to an external negative pressure generating device via an air passage.

[0037] The negative pressure adsorption module also includes several pressure heads 413, which are disposed on the same side of the adsorption support 411 along with several suction cups 412. The pressure heads 413 and suction cups 412 are staggered, meaning a single pressure head 413 is positioned between two adjacent suction cups 412. Based on this arrangement, when the negative pressure adsorption module and the scraper module 42 form a clamping structure, the pressure heads 413 can act as abutments against the target object, further improving the clamping stability and reliability of the target object.

[0038] The scraper module 42 includes a scraper support 422 and a scraper body 423. The scraper body 423 is disposed on one side of the scraper support 422. When the suction end of the negative pressure adsorption module faces the scraper module 42, the side of the scraper body 423 is arranged opposite to several suction cups 412, that is, a clamping structure is formed between the side of the scraper body 423 and several suction cups 412. Based on this arrangement, a larger clamping contact area can be ensured, further improving the clamping stability and reliability of the target object.

[0039] The scraper body 423 is inclined, which allows for better application of force to the diaphragm, enabling it to be effectively peeled and loosened. The scraper module 42 also includes a mounting plate 421 for mounting the scraper module 42. The mounting plate 421 has mounting holes, and one end of the scraper support 422 has an arc-shaped hole 4221 through which a fastener passes and connects to the mounting hole. This fastener is specifically a bolt. By loosening the fastener, rotating the scraper support 422, and then tightening the fastener again, the relative position of the fastener and the arc-shaped hole 4221 changes, thereby adjusting the tilt angle of the scraper body 423. This allows for adjustment of the scraper body 423's tilt angle according to specific conditions during actual use. Furthermore, this design is simple in structure, easy to adjust, and provides a stable and reliable fixation.

[0040] The clamping device 4 further includes a second rotating mechanism 43 and a second linear drive mechanism 44. The negative pressure adsorption module is driven to rotate by the second rotating mechanism 43, and the negative pressure adsorption module and the scraper module 42 are driven to move relative to each other by the second linear drive mechanism 44. The negative pressure adsorption module, the scraper module 42, the second rotating mechanism 43, and the second linear drive mechanism 44 are all mounted on the fixed base 45. By moving the fixed base 45, the negative pressure adsorption module, the scraper module 42, the second rotating mechanism 43, and the second linear drive mechanism 44 can be moved synchronously.

[0041] In this invention, the negative pressure adsorption module is rotatably connected to the fixed base 45, and the negative pressure adsorption module is located on one side of the fixed base 45. The second rotating mechanism 43 is located on the other side of the fixed base 45. The output end of the second rotating mechanism 43 is directly connected to the negative pressure adsorption module, or is connected via a transmission structure. The second rotating mechanism 43 can be a rotary cylinder or a motor module. The second linear drive mechanism 44 is used to drive the scraper module 42 to move, so as to form relative movement with the negative pressure adsorption module, so that the negative pressure adsorption module and the scraper module 42 move closer or further apart. The scraper module 42 is disposed on the output end of the second linear drive mechanism 44. Specifically, the mounting plate 421 is disposed on the output end of the second linear drive mechanism 44, and the negative pressure adsorption module is disposed on the fixed base 45 via the second linear drive mechanism 44. The second linear drive mechanism 44 can be a cylinder or a hydraulic cylinder. Based on the aforementioned configuration, the spatial distribution of the negative pressure adsorption module, scraper module 42, rotating mechanism 2 43, and linear drive mechanism 2 44 on the fixed base 45 is more reasonable, which can effectively ensure that after the negative pressure adsorption module rotates, the several suction cups 412 can be in a relative state with the side of the scraper body 423.

[0042] The invention also includes a multi-axis moving mechanism 46 for driving the negative pressure adsorption module and the scraper module 42 to move synchronously in at least two directions. Specifically, with Figure 1 For example, the multi-axis moving mechanism 46 is specifically a two-axis moving mechanism, which includes a vertical Z-axis moving stroke and a horizontal X-axis moving stroke to meet the movement requirements of the negative pressure adsorption module and the scraper module 42 during use. In other embodiments, the multi-axis moving mechanism 46 may also be a three-axis moving mechanism or a robot with more than three axes.

[0043] Each diaphragm winding device 5 includes a rotary drive unit 3 and several winding rods disposed on the output end of the rotary drive unit 3. The rotary drive unit 3 drives the winding rods to rotate, thereby winding the diaphragm. Specifically, the rotary drive unit 3 is a motor module.

[0044] The present invention also provides a core separation method, which uses the core separation equipment described above and includes the following steps: S1. The adhesive fixing point at the end of the core is cut by the laser cutting head 121 to loosen the end of the core. The core is then flipped by the gripper 13. The outermost diaphragm of the core is then perforated by the laser cutting head 121 to form a perforated area. S2. The end of the core is held by the clamping device 4 and moved along the surface of the first conveying device 2 to the surface of the second conveying device 3. At this time, the diaphragm with the perforated area is at the top. The unfolded core has a structure of diaphragm-electrode-diaphragm-electrode from top to bottom. The lower electrode is adsorbed by the negative pressure adsorption module 1, and the upper electrode is adsorbed along the perforated area by the negative pressure adsorption module 2 41. The clamping device 4 is moved to separate the upper electrode from the diaphragm above the lower electrode and place the upper electrode on the first conveying device 2. S3. The diaphragm above the lower electrode sheet is scraped by the scraper module 42, the negative pressure adsorption module one stops adsorbing the lower electrode sheet, and the negative pressure adsorption module two 41 adsorbs and moves the diaphragm above the lower electrode sheet so that it is wound onto the diaphragm winding device 5 below. S4. The upper electrode sheet on the first conveying device 2 is clamped by the clamping device 4 and placed on the second conveying device 3. The negative pressure adsorption module 1 adsorbs the upper electrode sheet. The diaphragm above the upper electrode sheet is scraped by the scraper module 42. Then, the diaphragm is adsorbed and moved by the negative pressure adsorption module 2 41 so that it is wound onto the diaphragm winding device 5 above. The negative pressure adsorption module 1 stops adsorbing the upper electrode sheet. S5. Conveying device 1 2 and conveying device 2 3 continue to convey, and two diaphragm winding devices 5 continue to wind up the diaphragm to complete the separation of the upper electrode sheet, the lower electrode sheet and the diaphragm. The upper electrode sheet moves forward along the surface of conveying device 2 3 and is sent out, while the lower electrode sheet falls between conveying device 1 2 and conveying device 2 3 and is sent out.

[0045] This core separation method utilizes the aforementioned core separation equipment. The pre-processing stage employs laser cutting, resulting in higher cutting precision. This allows for accurate cutting of the adhesive fixing points at the core ends. The energy is more concentrated, precisely and effectively targeting the cut position. This ensures the adhesive fixing points at the core ends are effectively cut, preventing the diaphragm or tape near the cut point from melting and adhering tightly to the electrode. This facilitates the complete separation of the electrode and diaphragm and reduces diaphragm and tape residue on the electrode after separation. Furthermore, the diaphragm surface can be perforated, and then the upper electrode is adsorbed through the perforated area by the negative pressure adsorption module 41, achieving separation of the upper electrode from the lower electrode and the diaphragm above the lower electrode. This enables efficient and orderly separation between the diaphragm and the electrode, resulting in more thorough separation. It effectively reduces the adhesion of diaphragm or tape to the electrode surface, reduces the workload of subsequent secondary separation, and improves electrode recycling efficiency.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0047] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A core separation device, characterized in that, It includes a pretreatment device (1), a first conveying device (2), a second conveying device (3), a clamping device (4), and two diaphragm winding devices (5). The pretreatment device (1) includes a laser module (12) and a gripper (13). The gripper (13) is used to hold the core and drive the core to flip. The laser cutting head (121) of the laser module (12) is used to cut the bonding and fixing part at the end of the core and to punch holes in the diaphragm on the surface of the core. The first conveying device (2) is used to convey the unfolded core, the second conveying device (3) is provided with a negative pressure adsorption module 1 for adsorbing the electrode sheet, and two diaphragm winding devices (5) are located between the first conveying device (2) and the second conveying device (3) and are spaced apart along the height direction between the first conveying device (2) and the second conveying device (3). The clamping device (4) includes a negative pressure adsorption module two (41) and a scraper module (42). The negative pressure adsorption module two (41) and the scraper module (42) are arranged adjacent to each other and can move synchronously. The negative pressure adsorption module two (41) can be rotated so that the adsorption end of the negative pressure adsorption module two (41) faces the scraper module (42) or faces other directions. The negative pressure adsorption module two (41) and the scraper module (42) can move relative to each other so that the negative pressure adsorption module two (41) and the scraper module (42) move closer to each other or further away from each other.

2. The core separation device as described in claim 1, characterized in that, The gripper (13) includes two opposing and parallel gripping arms (135). Each of the two gripping arms (135) has several push rods (1351) on its opposing side, and the ends of the push rods (1351) are pointed.

3. The core separation device as described in claim 2, characterized in that, The gripper (13) also includes a fixed plate (131), a linear drive mechanism, two connecting seats (134) and two rotating mechanisms (137). The two gripping arms (135) are rotatably mounted on the two connecting seats (134), and the two connecting seats (134) are slidably mounted on the fixed plate (131). The linear drive mechanism is used to drive the two gripping arms (135) to move relative to each other. The two rotating mechanisms (137) are correspondingly mounted on the two connecting seats (134). Each rotating mechanism (137) is directly or via transmission connected to the gripping arm (135) on its connecting seat (134).

4. The core separation device as described in any one of claims 1-3, characterized in that, The pretreatment device (1) further includes a placement table (11) for placing the core, and the placement table (11) or the laser cutting head (121) is provided with a nitrogen nozzle.

5. The core separation device as described in claim 1, characterized in that, The negative pressure adsorption module two (41) includes an adsorption support (411), several suction cups (412) and several pressure heads (413). The several suction cups (412) and several pressure heads (413) are all arranged on one side of the adsorption support (411) and are staggered. The several suction cups (412) form the adsorption end of the negative pressure adsorption module two (41).

6. The core separation device as described in claim 1 or 5, characterized in that, The negative pressure adsorption module 2 (41) is driven to rotate by the rotating mechanism 2 (43), and the negative pressure adsorption module 2 (41) and the scraper module (42) are driven to move relative to each other by the linear drive mechanism 2 (44).

7. The core separation device as described in claim 5, characterized in that, The scraper module (42) includes a mounting plate (421), a scraper support (422), and a scraper body (423). The mounting plate (421) is used to install the scraper module (42). The mounting plate (421) is provided with mounting holes. One end of the scraper support (422) is provided with an arc-shaped hole (4221). Fasteners pass through the arc-shaped hole (4221) and connect to the mounting hole. The scraper body (423) is located on one side of the scraper support (422). When the suction end of the negative pressure adsorption module two (41) faces the scraper module (42), the side of the scraper body (423) is arranged opposite to several suction cups (412).

8. The core separation device as described in any one of claims 1-3, 5, and 7, characterized in that, It also includes a multi-axis moving mechanism (46) for driving the negative pressure adsorption module 2 (41) and the scraper module (42) to move synchronously in at least two directions.

9. The core separation device as described in any one of claims 1-3, 5, and 7, characterized in that, It also includes a pressing device (6), which includes a lifting mechanism and a pressing body. The pressing body is located above the conveying device (2), and the lifting mechanism is used to drive the pressing body to move toward the surface of the conveying device (2).

10. A method for separating core components, characterized in that, The core separation device as described in any one of claims 1-9 is used, and the separation method includes the following steps: S1. Cut the adhesive fixing point at the end of the core with the laser cutting head (121) to loosen the end of the core, and drive the core to flip over with the gripper (13). Then, punch holes in the outermost diaphragm of the core with the laser cutting head (121) to form a punched area. S2. The end of the core is held by the clamping device (4) and moved along the surface of the first conveying device (2) to the surface of the second conveying device (3). The lower electrode is adsorbed by the negative pressure adsorption module 1, and the upper electrode is adsorbed along the perforated area by the negative pressure adsorption module 2 (41). The clamping device (4) is moved to separate the diaphragm above the lower electrode and place the upper electrode on the first conveying device (2). S3. The diaphragm above the lower electrode sheet is scraped by the scraper module (42). The negative pressure adsorption module one stops adsorbing the lower electrode sheet. The negative pressure adsorption module two (41) adsorbs and moves the diaphragm above the lower electrode sheet so that it is wound onto the diaphragm winding device (5) below. S4. The upper electrode sheet on the first conveying device (2) is clamped by the clamping device (4) and placed on the second conveying device (3). The negative pressure adsorption module 1 adsorbs the upper electrode sheet. The diaphragm above the upper electrode sheet is scraped by the scraper module (42). Then the diaphragm is adsorbed and moved by the negative pressure adsorption module 2 (41) so that it is wound onto the diaphragm winding device (5) above. The negative pressure adsorption module 1 stops adsorbing the upper electrode sheet. S5. Conveying device one (2) and conveying device two (3) continuously convey, and two diaphragm winding devices (5) continuously wind up the diaphragm to complete the separation of the upper electrode, the lower electrode and the diaphragm.

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