Battery pole piece laser die cutting and lamination integrated device and method

Abstract

The invention discloses a battery pole piece laser die cutting and lamination integrated device and method, the device comprises a main controller and a machine table, two die cutting mechanisms are oppositely arranged on the two sides of the machine table respectively, and the two die cutting mechanisms are used for cutting a positive pole piece material belt and a negative pole piece material belt respectively to form a positive pole piece and a negative pole piece; according to the device, a plurality of working procedures such as die cutting and lamination are integrated through an integrated design, and accurate positions and stable tension of the pole pieces in the whole processing process are ensured through a tension swing roller, a process deviation rectifying assembly and a floating roller assembly; deformation or breakage caused by loosening or excessive pulling of the pole piece winding tape in the conveying process is avoided; the edge of the pole piece is guaranteed to be flat and smooth through the laser cutting assembly, the flatness and surface cleanliness of the pole piece are guaranteed through the reinforcing rib assembly and the high-speed air knife assembly respectively, the quality of the pole piece in the machining process is guaranteed to a certain degree, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pole piece laser die cutting and lamination, and in particular to an integrated device and method for battery pole piece laser die cutting and lamination. Background Art

[0002] Lithium batteries are a type of battery that uses metallic lithium or lithium alloys as negative electrode materials and organic solutions as electrolytes. Compared with traditional aqueous solution batteries, lithium batteries have the advantages of higher specific energy, longer cycle life, and environmental friendliness. They are a battery system with great development potential. Laminated batteries are a type of lithium battery that has the advantages of high energy density, low internal resistance, good discharge platform, convenience for fast charging and discharging of large currents, and no dead ends. Therefore, laminated batteries are being vigorously developed. For laminated batteries, it is necessary to process multiple pole pieces with pole ears in advance, and stack the multiple pole pieces in sequence to form a battery. As the market demand for laminated batteries increases, the production capacity of batteries also increases, and battery equipment needs to be accelerated accordingly. During the molding process of laminated batteries, the positive and negative pole pieces of the battery cells need to be cut.

[0003] Traditional battery pole piece laser die-cutting and lamination usually require more manual intervention, such as manual replacement of material rolls and deviation correction, which increases labor costs and is prone to human errors. The pole piece rolls are prone to uneven tension during the transmission process. If the tension is too large, the pole piece may be subjected to excessive pulling force, causing plastic deformation or even tearing of the material. If the tension is too small, the pole piece may become loose, resulting in wrinkles or uneven stacking, affecting the subsequent lamination process and thus affecting the quality of the final product.

[0004] In order to solve this problem, we propose an integrated device and method for laser die-cutting and laminating battery pole pieces. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an integrated device and method for laser die-cutting and laminating battery pole pieces, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] An integrated device and method for laser die-cutting and laminating battery pole pieces, comprising: a main controller and a machine platform, two die-cutting mechanisms are respectively arranged on both sides of the machine platform, the two die-cutting mechanisms are respectively used to cut the pole piece strips of the positive pole and the negative pole to form the positive pole piece and the negative pole piece, and a laminating mechanism for laminating the positive pole piece and the negative pole piece is also arranged at one end of the machine platform;

[0008] Wherein, the die-cutting mechanism comprises:

[0009] An unwinding assembly is arranged on one side of the machine platform and is used to install and unwind the pole piece roll of the pole piece strip;

[0010] The tape connection platform assembly is arranged above the unwinding assembly and is used to provide a platform for replacing the pole piece tape, connecting the new pole piece tape with the pole piece tape that is about to be used up to achieve seamless switching;

[0011] A tension swing roller is arranged above the tape-joining platform assembly and is used to transmit and adjust the tension of the pole piece tape;

[0012] At least two reinforcing rib assemblies are respectively arranged on one side of the machine table and located to the right of the tension swing roller, and are respectively used to press the two sides of the pole piece strip and limit the two sides thereof; a process deviation correction assembly is arranged to the right of the reinforcing rib assembly, and is used to monitor and adjust the position of the pole piece strip to prevent the pole piece strip from shifting or deviating from the predetermined path during the transmission process;

[0013] A laser cutting assembly is arranged below the process deviation correction assembly, and is used to trim the edge of the pole piece strip, and to perform multiple-section cutting of the pole piece strip in the horizontal direction of the pole piece strip during the conveying process according to a preset cutting size, so as to form multiple pole piece strips;

[0014] The main drive assembly is arranged on the right side of the laser cutting assembly and is used to drive the pole piece strip to be smoothly conveyed;

[0015] A high-speed air knife assembly is arranged on the right side of the main drive assembly, and uses high-speed airflow to impact the front and back surfaces of the pole piece strip to clean the pole piece surface;

[0016] The floating roller assembly is used to adjust the tension during the transmission of the pole piece material strip to prevent the pole piece material strip from being loosened or over-tightened. The floating roller assembly includes a floating roller fixing frame, a rotating rod, a floating roller, a counterweight rod and a locking cylinder. The floating roller fixing frame is arranged on one side of the machine platform. Two swing arm mounting plates are respectively arranged on the inner walls on opposite sides of the floating roller fixing frame. The middle parts of the adjacent side walls of the two swing arm mounting plates are respectively fixedly connected to the two ends of the rotating rod. A swing shaft is installed at one end of the rotating rod. The swing shaft extends out of the floating roller fixing frame and one end of which is provided with an angle sensor. A movable plate is fixedly arranged on the swing shaft. A cam follower is fixedly arranged on the movable plate. The two ends of the counterweight rod are respectively fixedly connected to one end of the adjacent side walls of the two swing arm mounting plates. The two ends of the floating roller are respectively rotatably connected to the other end of the adjacent side walls of the two swing arm mounting plates. A locking cylinder is fixedly arranged on the side wall of the floating roller fixing frame. The piston rod of the locking cylinder is hinged to the side wall of the cam follower.

[0017] A cache component is arranged on the right side of the floating roller component, and the cache component provides buffer storage for the pole piece strip processed by the previous process;

[0018] A winding assembly is arranged above the buffer assembly and is used to orderly wind up the processed pole piece strips;

[0019] A cutting assembly is arranged on the right side of the buffer assembly, and is used to cut the electrode sheet material strip in the conveying process in multiple sections in the vertical direction of the electrode sheet material strip according to a preset cutting size to form electrode sheets;

[0020] A negative pressure operation component is arranged on the right side of the cutting component and is used to transfer the cut pole pieces to the lamination mechanism;

[0021] A plurality of guide roller assemblies are respectively arranged on one side of the machine platform to guide the path of the pole piece roll to ensure its orderly transmission between various processes.

[0022] Preferably, a defect detection component is provided between the cache component and the cutting component, and the defect detection component includes a camera mounting bracket and an optical camera arranged on the camera mounting bracket, wherein the camera mounting bracket is arranged on one side of the machine, and the optical camera is used to capture a detection image of a detection area corresponding to a point to be tested on the pole piece material strip.

[0023] Preferably, a tape connection fixing frame is arranged on one side of the machine platform, the tape connection fixing frame is provided with a tape connection plate for connecting the tape to the splice, the tape connection plate is provided with a cutting groove, and two scale bars are respectively arranged on both sides of the cutting groove;

[0024] A first pole piece pressure rod, wherein two first guide shafts are fixedly disposed on the bottom sides of both ends of the first pole piece pressure rod, and the two first guide shafts are slidably disposed in two first linear bearings disposed on the belt fixing frame;

[0025] A second pole piece pressure rod, wherein two second guide shafts are fixedly disposed on the bottom sides of both ends of the second pole piece pressure rod, and the two second guide shafts are slidably disposed in two second linear bearings disposed on the belt fixing frame;

[0026] A first driving device, the first driving device is arranged in a first mounting cavity provided in the connecting strap fixing frame, and the bottom ends of the two first guide shafts are connected to the first driving device to drive the first pole piece pressure rod to move toward or away from the connecting strap plate;

[0027] A second driving device, the second driving device is arranged in a first mounting cavity provided in the connecting strap fixing frame, and the bottom ends of the two second guide shafts are connected to the second driving device to drive the second pole piece pressure rod to move toward or away from the connecting strap plate;

[0028] An auxiliary material placement box, the auxiliary material placement box is fixedly arranged at one end of the belt connection fixing frame;

[0029] A dust collecting bin is arranged in a first installation cavity opened by the belt connecting fixing frame, the upper side of the dust collecting bin is connected to the cutting groove, and one end of the dust collecting bin extends to the outside of the belt connecting fixing frame and is connected to a dust collecting system.

[0030] Preferably, the first fixing frame is arranged on one side of the machine platform, and two first floating pressure blocks are fixedly arranged on inner walls on two opposite sides of the first fixing frame respectively;

[0031] A rubber-coated roller, wherein both ends of the rubber-coated roller are respectively fixedly provided with a rubber-coated roller shaft, and the rubber-coated roller shaft is respectively arranged in the two first floating pressure blocks;

[0032] A horizontal linear rail, one side of which is fixedly disposed on the inner side wall of the first fixing frame, and a horizontal sliding block is slidably disposed on the horizontal linear rail;

[0033] A first ball screw, wherein two ends of the first ball screw are respectively arranged in two bearing seats, and the two bearing seats are fixedly arranged on the inner side wall of the first fixing frame;

[0034] A first motor is fixedly arranged on one side of the first fixing frame, and an output end of the first motor is fixedly connected to one end of the first ball screw;

[0035] A first screw transmission block is arranged on the first ball screw, the first screw transmission block is fixedly arranged at the bottom end of the horizontal slider, and a cylinder mounting plate is fixedly arranged on one side of the first screw transmission block;

[0036] A lifting cylinder, the lifting cylinder is fixedly arranged on the cylinder mounting plate;

[0037] A connecting frame, the bottom end of which is fixedly connected to the output end of the lifting cylinder, and two second floating pressure blocks are fixedly arranged on opposite sides of the inner wall of the connecting frame;

[0038] A spur roller, wherein two spur roller shafts are fixedly arranged at both ends of the spur roller, and the two spur roller shafts are respectively arranged in two of the second floating pressure blocks;

[0039] The sensor mounting plate is fixedly arranged on the side wall of the connecting frame, and two induction lug sensors are arranged oppositely on the side wall of the sensor mounting plate away from the connecting frame.

[0040] Preferably, the process correction component comprises:

[0041] A first deviation-correcting bracket is arranged on one side of the machine platform, and two first ball bearings are arranged opposite to each other on the first deviation-correcting bracket;

[0042] A second ball screw, wherein both ends of the second ball screw are respectively arranged in two first ball bearings, a second screw transmission block is arranged thereon, the bottom end of the second screw transmission block is slidably arranged in a sliding groove provided on the first deviation correcting bracket, a second motor is arranged on the first deviation correcting bracket, and an output end of the second motor is fixedly connected to one end of the second ball screw through a coupling;

[0043] Two photoelectric sensors are respectively arranged on the inner wall of one side of the first deviation-correcting bracket;

[0044] A sensing sheet, arranged on the second lead screw transmission block, the second lead screw transmission block drives the sensing sheet to move between the two photoelectric sensors, so as to detect the distance position of the movement of the second lead screw transmission block;

[0045] An adjustment handle is arranged at an end of the second ball screw away from the second motor, and a first display is arranged at the end of the adjustment handle for checking the adjustment distance when manually adjusting the adjustment handle;

[0046] The mounting frame is arranged on the bottom side of the first deviation-correcting bracket, a first ball linear guide is fixedly arranged at the bottom end of the first deviation-correcting bracket, a first slider is arranged on the first ball linear guide, the first slider is connected to the first driving part, and the first driving part is used to drive the first slider to slide along a straight line on the first ball linear guide;

[0047] Two ultrasonic mounting plates, one side of each of the two ultrasonic mounting plates is slidably disposed on a first slide rail provided on a side wall of the mounting frame, the two ultrasonic mounting plates are disposed opposite to each other and one side of each plate is provided with a groove for a pole piece to pass through, and an ultrasonic sensor is provided on the inner side wall of each of the two ultrasonic mounting plates;

[0048] A driving member, the driving member is arranged in a second mounting cavity provided in the mounting frame, and is used for driving the two ultrasonic mounting plate seats to move relative to each other;

[0049] The second fixed frame is arranged at one side of the machine platform, two guide rollers are arranged in the second fixed frame respectively, and a deviation correction controller is arranged at one side of the second fixed frame.

[0050] Preferably, the laser base is arranged on one side of the machine platform, the laser base is provided with a second slide rail, a transverse baffle is slidably arranged on the second slide rail, and the laser base is also provided with a driving mechanism for driving the transverse baffle to slide on the second slide rail;

[0051] A support frame, fixedly arranged on the transverse baffle, the support frame is provided with a laser card block, and the laser card block is provided with a laser cutting piece for cutting the pole piece;

[0052] A cleaning chamber is fixedly arranged on one side of the laser base, a slot for inserting one side of the pole ear is provided at the upper end of the cleaning chamber, and a negative pressure mechanism communicated with the cleaning chamber is provided on one side of the cleaning chamber;

[0053] A blowing control mechanism is arranged on the side wall of the laser base and is used for blowing air into the interior of the cleaning chamber;

[0054] A fluid air knife is arranged on one side of the upper end of the cleaning chamber, and the fluid air knife and the air blowing control mechanism are used to blow the dust and slag generated by the electrode cutting into the negative pressure mechanism, and the negative pressure mechanism is externally connected to a dust collection system;

[0055] A heat shield, wherein a through hole is provided on one side of the cleaning chamber away from the air blowing control mechanism, and the heat shield is arranged opposite to the through hole through a connecting plate to prevent the heat generated during the cutting process from affecting the cutting operation;

[0056] The roller mechanism is arranged on the laser base and is located directly below the cleaning chamber. The roller mechanism is used to guide the pole piece strip to be transferred to the next process.

[0057] Preferably, a main drive fixed frame is arranged on one side of the machine platform, a pressure roller cylinder is arranged on the upper end of the main drive fixed frame, an output end of the pressure roller cylinder movably passes through the main drive fixed frame and is connected to a lifting seat, four linear bearing seats are arranged on the main drive fixed frame, guide rods are slidably arranged in the four linear bearing seats, and the bottom ends of the four guide rods are respectively fixedly connected to the four corners of the upper end of the lifting seat;

[0058] Two bearing fixing plates, the two bearing fixing plates are arranged on opposite sides of the bottom end of the main drive fixing frame;

[0059] A pressure roller, wherein both ends of the pressure roller are respectively fixedly provided with pressure roller shafts, and the pressure roller shafts are respectively arranged in two bearing fixing plates;

[0060] The second ball bearings are respectively arranged on two sides of the main drive fixing frame;

[0061] A main drive roller, wherein main drive roller shafts are fixedly arranged at both ends of the main drive roller, and the main drive roller shafts are respectively arranged in second ball bearings, and a main drive motor for driving the main drive roller to rotate is arranged on one side of the main drive fixing frame;

[0062] Two pole ear fixing blocks are arranged on the inner walls of both sides of the main drive fixing frame opposite to each other, and one side of the two pole ear fixing blocks is connected to a pole ear folding piece through a pole ear fixing rod;

[0063] The dust collecting hood is arranged on the bottom side of the inner wall of the fixing frame and is located directly below the main driving roller. A brush mechanism for cleaning the surface of the main driving roller is arranged in the dust collecting hood.

[0064] Preferably, the high-speed air knife assembly includes two dust removal mechanisms disposed opposite to each other up and down, wherein the dust removal mechanism includes:

[0065] A third fixed frame is arranged on one side of the machine platform, and a roller bracket is fixedly arranged on the third fixed frame;

[0066] A roller, wherein the roller is arranged in mounting grooves provided on both sides of the roller support;

[0067] Two connecting rods, both ends of the two connecting rods are respectively fixedly connected to the inner walls of the third fixing frame, a clamping block and a fixing bracket are fixedly arranged on the two connecting rods, a clamping hoop is fixedly connected to one side of the clamping block, and a connecting pipe is fixedly installed in the mounting hole of the fixing bracket;

[0068] A contoured cover is fixedly arranged at one end of the connecting pipe, and the contoured cover is communicated with the connecting pipe, and a wind knife mechanism for sucking air from the surface of the pole piece is arranged in the contoured cover;

[0069] A dust suction pipe is communicated with the connecting pipe, and the dust suction pipe is arranged in the clamping hoop, and the dust suction pipe is externally connected to a dust collection system.

[0070] Preferably, the lamination mechanism comprises a tail roll assembly, a lamination table assembly, a diaphragm unwinding assembly, a transfer robot, a first lamination robot, a second lamination robot, a third lamination robot, a pole piece belt assembly, a glue clamping assembly, a glue assembly and a blanking robot;

[0071] The stacking table assembly is arranged on the machine platform and located on one side of the negative pressure operation assembly, and is used to provide a stacking operation platform;

[0072] The diaphragm unwinding assembly is arranged on one side of the lamination table assembly, and is used to unwind the diaphragm material from a roll state and convey it to the lamination area;

[0073] The transfer robot is arranged on the opposite side of the diaphragm unwinding assembly and is used to transport the diaphragm and the electrode between various processes;

[0074] The first lamination robot, the second lamination robot and the third lamination robot are sequentially arranged on one side of the transfer robot to perform lamination tasks and place the pole pieces and diaphragms;

[0075] The pole piece belt assembly is arranged on the opposite side of the first lamination robot, the second lamination robot and the third lamination robot, and is used to transport the pole piece to a designated position;

[0076] The glue clamping assembly is arranged on one side of the third lamination robot and is used to fix the battery cell after lamination is completed;

[0077] The adhesive tape component is arranged on one side of the adhesive tape clamping component and is used to attach a functional adhesive tape to the battery cell;

[0078] A QR code attaching component is provided on the opposite side of the adhesive attaching component and is used to attach a QR code to the battery cell to track the production information, batch number, and production date of the battery cell, so as to facilitate subsequent quality management and traceability;

[0079] A battery cell buffer tray is provided on one side of the QR code attaching component and is used to provide a temporary storage area for the battery cells;

[0080] The unloading robot is arranged between the gluing assembly and the QR code attaching assembly, and is used to move the battery cells that have completed lamination and gluing from the gluing assembly to the QR code attaching assembly, and to move the finished battery cells from the battery cell buffer tray to the next process or storage area;

[0081] The tail winding assembly is arranged on the opposite side of the lamination table assembly and is used to wind up the excess pole pieces or diaphragms.

[0082] Furthermore, the present invention also provides a battery pole piece laser die cutting and lamination method, which is applicable to the above-mentioned battery pole piece laser die cutting and lamination integrated device, comprising the following steps:

[0083] S1. When laser die-cutting the battery pole piece, first install the pole piece roll on the unwinding assembly, unwind the pole piece strip through the unwinding assembly, connect the pole piece strip to the strip connection platform assembly through the tension swing roller, and make the pole piece strip pass through the reinforcing rib assembly, process correction assembly, laser cutting assembly, main drive assembly, high-speed air knife assembly, floating roller assembly, buffer assembly, defect detection assembly and cutting assembly in sequence;

[0084] S2. The pole piece material strip first passes through the reinforcing rib assembly, and is pressed and kept flat by the spur roller and the rubber-coated roller; enters the process correction assembly, and detects and adjusts the position of the pole piece material strip through the ultrasonic sensor; passes through the laser cutting assembly, uses the laser cutting parts to accurately cut the pole piece material strip, and removes the dust generated by the cutting by the fluid air knife and the blowing control mechanism; when passing through the main drive assembly, the main drive motor drives the main drive roller to drive the pole piece material strip to be smoothly conveyed; then passes through the high-speed air knife assembly, and the surface of the pole piece material strip is cleaned by the high-speed airflow; adjusts the tension of the pole piece material strip through the floating roller assembly, and enters the cache assembly for temporary storage; detects and marks defects on the pole piece material strip through the defect detection assembly; finally, it is cut according to the preset size through the cutting assembly to form a single pole piece, and the processed pole piece is conveyed to the lamination mechanism through the negative pressure operation assembly;

[0085] S3. The diaphragm unwinding assembly unwinds the diaphragm from the material roll and conveys it, the electrode belt assembly conveys the positive electrode and the negative electrode, the first stacking robot, the second stacking robot and the third stacking robot stack the positive electrode, the diaphragm and the negative electrode on the stacking table assembly in turn to form a multi-layer composite structure to form a battery cell. After the stacking is completed, the glue clamping assembly fixes the battery cell, the glue assembly attaches functional tape on its surface, the unloading robot moves the battery cell with completed glue from the glue assembly to the QR code attaching assembly, the QR code attaching assembly attaches a QR code label on the battery cell, the battery cell with completed QR code attachment is conveyed to the battery cell cache tray, and finally the finished battery cell is removed by the unloading robot to complete the process.

[0086] Compared with the prior art, the present invention provides an integrated device and method for laser die-cutting and laminating battery pole pieces, which has the following beneficial effects:

[0087] The device integrates die-cutting, lamination and other processes into one through an integrated design. The tape splicing platform component supports seamless switching of electrode material rolls, reducing downtime. The cache component can balance the rhythm of the production line to ensure continuous production, significantly improve the degree of automation, and reduce the need for manual intervention. The tension swing roller, process correction component, and floating roller component ensure the accurate position and stable tension of the electrode in the entire processing process, avoiding the deformation or breakage of the electrode tape due to relaxation or excessive pulling during the transmission process. The laser cutting component ensures the flatness and smoothness of the electrode edge, and the reinforcement rib component and high-speed air knife component respectively ensure the flatness and surface cleanliness of the electrode, which ensures the quality of the electrode in the processing process to a certain extent, reduces the number of rework and scrap rate caused by quality problems, and improves production efficiency. In addition, through the application of the dust collection system, the dust and slag generated by the electrode cutting can be collected, which improves the air quality of the workshop, reduces the threat to the health of operators, and further improves the safety of the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 It is a plan view of the integrated device for laser die cutting and laminating battery pole pieces of the present invention;

[0089] Figure 2 A perspective view of the battery pole piece laser die cutting and lamination integrated device of the present invention;

[0090] Figure 3 It is a side view of the die-cutting mechanism of the present invention;

[0091] Figure 4 It is a structural schematic diagram of the belt connection platform assembly of the present invention;

[0092] Figure 5 It is a structural schematic diagram of the reinforcing rib assembly of the present invention;

[0093] Figure 6 The structure of the process correction component of the present invention is shown in FIG. Figure 1 ;

[0094] Figure 7 The structure of the process correction component of the present invention is shown in FIG. Figure 2 ;

[0095] Figure 8 The structure of the laser cutting assembly of the present invention is shown in FIG. Figure 1 ;

[0096] Fig. 9 The structure of the laser cutting assembly of the present invention is shown in FIG. Figure 2 ;

[0097] Fig.10 For the present invention Fig. 9 A partial enlarged view of point A shown;

[0098] Fig.11 This is a schematic diagram of the main drive assembly structure of the present invention;

[0099] Fig.12 This is a schematic diagram of the structure of the high-speed air knife assembly of the present invention;

[0100] Fig.13 This is a schematic diagram of the structure of the floating roller assembly of the present invention;

[0101] Fig.14 It is a plan view of the lamination mechanism of the present invention;

[0102] Fig.15 The structure diagram of the lamination mechanism of the present invention is shown in FIG. Figure 1 ;

[0103] Fig.16 The structure diagram of the lamination mechanism of the present invention is shown in FIG. Figure 2 .

[0104] In the figure: 1. Main controller; 2. Machine; 3. Die-cutting mechanism;

[0105] 31. Unwinding assembly;

[0106] 32. Tape connection platform assembly; 3201. Tape connection fixing frame; 3202. Tape connection plate; 3203. Cutting groove; 3204. Scale bar; 3205. First pole piece pressure rod; 3206. First guide shaft; 3207. First linear bearing; 3208. Second pole piece pressure rod; 3209. Second guide shaft; 3210. Second linear bearing; 3211. First installation cavity; 3212. Accessory placement box;

[0107] 33. Tension swing roller;

[0108] 34. Reinforcement rib assembly; 3401. First fixed frame; 3402. Rubber-coated roller; 3403. Horizontal linear rail; 3404. First ball screw; 3405. First motor; 3406. First screw transmission block; 3407. Lifting cylinder; 3408. Connecting frame; 3409. Cylinder mounting plate; 3410. Spur roller; 3411. Second floating pressure block; 3412. Sensor mounting plate; 3413. Inductive lug sensor; 3414. Horizontal slider; 3415. First floating pressure block; 35. Process Deviation correction component; 3501, first deviation correction bracket; 3502, first ball bearing; 3503, second ball screw; 3504, second screw transmission block; 3505, second motor; 3506, photoelectric sensor; 3507, induction sheet; 3508, adjustment handle; 3509, mounting frame; 3510, first driving part; 3511, ultrasonic mounting plate; 3512, driving member; 3513, second fixing frame; 3514, guide roller; 3515, deviation correction controller; 3516, ultrasonic sensor;

[0109] 36. Laser cutting assembly; 3601. Laser base; 3602. Transverse baffle; 3603. Driving mechanism; 3604. Laser block; 3605. Laser cutting part; 3606. Cleaning chamber; 3607. Card slot; 3608. Negative pressure mechanism; 3609. Air blowing control mechanism; 3610. Fluid air knife; 3611. Heat shield; 3612. Roller mechanism; 3613. Support frame.

[0110] 37. Main drive assembly; 3701. Main drive fixing frame; 3702. Pressure roller cylinder; 3703. Lifting seat; 3704. Linear bearing seat; 3705. Guide rod; 3706. Bearing fixing plate; 3707. Pressure roller; 3708. Second ball bearing; 3709. Main drive roller; 3710. Supporting ear fixing block; 3711. Supporting ear fixing rod; 3712. Supporting ear folding piece; 3713. Dust collecting cover; 3714. Main drive motor;

[0111] 38. High-speed air knife assembly; 3801. Third fixed frame; 3802. Roller; 3803. Roller bracket; 3804. Connecting rod; 3805. Clamping block; 3806. Fixed bracket; 3807. Clamping hoop; 3808. Connecting pipe; 3809. Contour cover; 3810. Dust suction pipe.

[0112] 39. Floating roller assembly; 3901. Floating roller fixing frame; 3902. Rotating rod; 3903. Floating roller; 3904. Counterweight rod; 3905. Locking cylinder; 3906. Swing arm mounting plate; 3907. Swing shaft; 3908. Angle sensor; 3909. Movable plate; 3910. Cam follower;

[0113] 310, cache component; 311, reel component;

[0114] 312, cutting components;

[0115] 313. Negative pressure operation assembly; 314. Guide roller assembly;

[0116] 4. Lamination mechanism; 41. Tail roll assembly; 42. Lamination table assembly; 43. Diaphragm unwinding assembly; 44. Transfer robot; 45. First lamination robot; 46. Second lamination robot; 47. Second lamination robot; 48. Pole piece belt assembly; 49. Glue clamping assembly; 410. Glue assembly; 411. Unloading robot. DETAILED DESCRIPTION

[0117] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of 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.

[0118] In order to address the shortcomings of the existing technology, such as Figure 1 , 2 As shown in FIG. 3 , the present invention provides an integrated device for laser die cutting and laminating of battery pole pieces, comprising a main controller 1 and a machine platform 2, two die cutting mechanisms 3 are respectively arranged on both sides of the machine platform 2, and the two die cutting mechanisms 3 are respectively used to cut the pole piece strips of the positive electrode and the negative electrode to form the positive pole piece and the negative pole piece, and a laminating mechanism 4 for laminating the positive pole piece and the negative pole piece is also arranged at one end of the machine platform 2;

[0119] Wherein, the die-cutting mechanism 3 comprises:

[0120] The unwinding assembly 31 is arranged at one side of the machine table 2 and is used to install and unwind the pole piece roll of the pole piece strip;

[0121] The tape connection platform assembly 32 is arranged above the unwinding assembly 31 and is used to provide a platform for replacing the pole piece tape, connecting the new pole piece tape with the pole piece tape that is about to be used up to achieve seamless switching;

[0122] The tension swing roller 33 is arranged above the tape connection platform assembly 32 and is used to transmit and adjust the tension of the pole piece tape;

[0123] At least two reinforcing rib components 34 are respectively arranged on one side of the machine 2 and located to the right of the tension swing roller 33, and are respectively used to press the two sides of the pole piece strip and limit the two sides thereof; the reinforcing rib components 34 and the tension swing roller 33 work together to ensure that the pole piece strip remains flat during the conveying process and is in a stable position before entering the next process, and the setting of the spur roller 3410 can ensure that the pole piece remains flat during the conveying process and eliminates bending or corrugation;

[0124] The process deviation correction component 35 is arranged on the right side of the reinforcing rib component 34, and is used to monitor and adjust the position of the pole piece material belt to prevent the pole piece material belt from shifting or deviating from the predetermined path during the transmission process;

[0125] The laser cutting assembly 36 is disposed below the process deviation correction assembly 35, and is used to trim the edge of the pole piece strip, and cut the pole piece strip in the horizontal direction of the pole piece strip during the transmission process in multiple sections according to the preset cutting size to form multiple pole piece strips;

[0126] The main drive assembly 37 is arranged on the right side of the laser cutting assembly 36 and is used to drive the pole piece strip to be smoothly conveyed;

[0127] The high-speed air knife assembly 38 is arranged on the right side of the main drive assembly 37, and uses high-speed airflow to impact the front and back surfaces of the pole piece strip to clean the pole piece surface;

[0128] Specifically, Figure 3 As shown, the floating roller assembly 39 is used to adjust the tension of the pole piece material strip during the transmission process to prevent the pole piece material strip from being loosened or over-tightened. The floating roller assembly 39 includes a floating roller fixing frame 3901, a rotating rod 3902, a floating roller 3903, a counterweight rod 3904 and a locking cylinder 3905. The floating roller fixing frame 3901 is arranged on one side of the machine table 2. Two swing arm mounting plates 3906 are respectively arranged on the inner walls on the opposite sides of the floating roller fixing frame 3901. The middle parts of the adjacent side walls of the two swing arm mounting plates 3906 are respectively fixedly connected to the two ends of the rotating rod 3902. A swing shaft 3907 is installed at one end of the rotating rod 3902. 3907 extends out of the floating roller fixing frame 3901 and an angle sensor 3908 is arranged at one end thereof, a movable plate 3909 is fixedly arranged on the swing shaft 3907, a cam follower 3910 is fixedly arranged on the movable plate 3909, two ends of the counterweight rod 3904 are respectively fixedly connected to one end of the adjacent side walls of the two swing arm mounting plates 3906, two ends of the floating roller 3903 are respectively rotatably connected to the other end of the adjacent side walls of the two swing arm mounting plates 3906, a locking cylinder 3905 is fixedly arranged on the side wall of the floating roller fixing frame 3901, and a piston rod of the locking cylinder 3905 is hinged to the side wall of the cam follower 3910;

[0129] It should be noted that when the pole piece material strip passes through the floating roller 3903, if the material strip is loose, the floating roller 3903 will swing downward due to gravity; if the material strip is tight, the floating roller 3903 will swing upward, and the swing angle of the floating roller 3903 is detected by the angle sensor 3908 on the swing shaft 3907. The angle sensor 3908 detects the swing angle of the floating roller 3903 and sends a signal to the control system. The control system determines the tension of the material strip according to the detected angle signal.

[0130] The control system controls the action of the locking cylinder 3905 according to the feedback signal of the angle sensor 3908. When the position of the floating roller 3903 needs to be adjusted, the piston rod of the locking cylinder 3905 is extended and retracted, and the position of the floating roller 3903 is driven to change through the cam follower 3910, thereby adjusting the tension of the pole piece strip;

[0131] The counterweight rod 3904 is used to balance the weight of the floating roller 3903 to ensure that the floating roller 3903 is in a natural drooping state when there is no external force, thereby ensuring that the pole piece strip has a stable initial tension during the transmission process.

[0132] The buffer assembly 310 is arranged on the right side of the floating roller assembly 39. The buffer assembly 310 provides buffer storage for the electrode strip processed by the previous process, ensuring that the continuous production of the previous process is not affected by the subsequent processing speed.

[0133] The winding assembly 311 is disposed above the buffer assembly 310 and is used to orderly wind up the processed pole piece strips;

[0134] The cutting component 312 is arranged on the right side of the buffer component 310, and is used to cut the electrode material strip in the conveying process in multiple sections in the vertical direction of the electrode material strip according to the preset cutting size to form the electrode strip; as an embodiment, the cutting component 312 can select a reciprocating cutter to cut the electrode material strip;

[0135] The negative pressure operation component 313 is arranged on the right side of the cutting component 312 and is used to transfer the cut pole pieces to the lamination mechanism 4;

[0136] A plurality of guide roller assemblies 314 are respectively arranged on one side of the machine platform 2 to guide the path of the electrode sheet roll to ensure its orderly transmission between various processes.

[0137] Specifically, Figure 1 , 23, a defect detection component is provided between the buffer component 310 and the cutting component 312, and the defect detection component includes a camera fixing frame and an optical camera arranged on the camera fixing frame, the camera fixing frame is arranged on one side of the machine 2, and the optical camera is used to capture the detection image of the detection area corresponding to the point to be tested on the pole piece material strip, and the detection system receives the detection image captured by the optical camera and analyzes and processes it to identify and mark the defects on the pole piece material strip;

[0138] Specifically, Figure 2 , 3 As shown in , 4, the belt connection platform assembly 32 includes:

[0139] The tape connection fixing frame 3201 is arranged at one side of the machine table 2. The tape connection fixing frame 3201 is provided with a tape connection plate 3202 for connecting the tape to the sheet. The tape connection plate 3202 is provided with a cutting groove 3203. Two scale bars 3204 are respectively arranged on both sides of the cutting groove 3203.

[0140] A first pole piece pressure rod 3205, two first guide shafts 3206 are fixedly disposed on the bottom sides of both ends of the first pole piece pressure rod 3205, and the two first guide shafts 3206 are slidably disposed in two first linear bearings 3207 disposed on the belt fixing frame 3201;

[0141] A second pole piece pressure rod 3208, two second guide shafts 3209 are fixedly disposed on the bottom sides of both ends of the second pole piece pressure rod 3208, and the two second guide shafts 3209 are slidably disposed in two second linear bearings 3210 disposed on the belt fixing frame 3201;

[0142] The first driving device is disposed in the first installation cavity 3211 of the connecting belt fixing frame 3201. The bottom ends of the two first guide shafts 3206 are connected to the first driving device to drive the first pole piece pressure rod 3205 to move toward or away from the connecting belt plate 3202.

[0143] The second driving device is disposed in the first mounting cavity 3211 of the connecting strap fixing frame 3201. The bottom ends of the two second guide shafts 3209 are connected to the second driving device to drive the second pole piece pressure rod 3208 to move toward or away from the connecting strap plate 3202.

[0144] Auxiliary material placement box 3212, the auxiliary material placement box 3212 is fixedly arranged at one end of the belt connection fixing frame 3201;

[0145] The dust collecting bin is arranged in the first installation cavity 3211 opened in the belt connecting fixing frame 3201, the upper side of the dust collecting bin is connected with the cutting groove 3203, and one end of the dust collecting bin extends to the outside of the belt connecting fixing frame 3201 and is connected with the dust collecting system.

[0146] Specifically, Figure 2 , 3 As shown in , 5, the reinforcing rib assembly 34 includes:

[0147] The first fixing frame 3401 is disposed on one side of the machine platform 2, and two first floating pressing blocks 3415 are fixedly disposed on the inner walls of two opposite sides of the first fixing frame 3401 respectively;

[0148] The rubber-coated roller 3402 has its shafts fixedly disposed at both ends of the rubber-coated roller 3402, and the shafts of the rubber-coated roller 3402 are disposed in two first floating pressure blocks 3415;

[0149] A horizontal linear rail 3403, one side of which is fixedly disposed on the inner side wall of the first fixed frame 3401, and a horizontal slider 3414 is slidably disposed on the horizontal linear rail 3403;

[0150] A first ball screw 3404, wherein both ends of the first ball screw 3404 are respectively disposed in two bearing seats, and both bearing seats are fixedly disposed on the inner side wall of the first fixing frame 3401;

[0151] The first motor 3405 is fixedly disposed on one side of the first fixing frame 3401 , and the output end of the first motor 3405 is fixedly connected to one end of the first ball screw 3404 ;

[0152] A first screw transmission block 3406 is disposed on the first ball screw 3404. The first screw transmission block 3406 is fixedly disposed at the bottom end of the horizontal slider 3414. A cylinder mounting plate 3409 is fixedly disposed on one side of the first screw transmission block 3406.

[0153] A lifting cylinder 3407, the lifting cylinder 3407 is fixedly arranged on a cylinder mounting plate 3409;

[0154] A connecting frame 3408, the bottom end of the connecting frame 3408 is fixedly connected to the output end of the lifting cylinder 3407, and two second floating pressure blocks 3411 are fixedly provided on opposite sides of the inner wall of the connecting frame 3408;

[0155] A spur roller 3410, two spur roller 3410 shafts are fixedly disposed at both ends of the spur roller 3410, and the two spur roller 3410 shafts are respectively disposed in two second floating pressure blocks 3411;

[0156] Furthermore, the design of the first floating pressing block 3415 and the second floating pressing block 3411 allows the rubber-coated roller 3402 and the spur roller 3410 to float within a certain range, adapting to the change in the thickness of the pole piece, and ensuring that good contact and compression effects can be maintained even when the material thickness changes slightly;

[0157] The sensor mounting plate 3412 is fixedly mounted on the side wall of the connecting frame 3408 , and two sensing tab sensors 3413 are relatively mounted on the side wall of the sensor mounting plate 3412 away from the connecting frame 3408 .

[0158] It should be noted that the lifting cylinder 3407 drives the connecting frame 3408 to move up and down, thereby driving the spur roller 3410 to move up and down, adjusting the contact pressure between the spur roller 3410 and the pole piece strip, and ensuring that the pole piece strip remains flat during the transmission process. The inductive pole ear sensor 3413 on the sensor mounting plate 3412 can detect the position of the pole ear on one side of the pole piece strip. The two reinforcing rib assemblies 34 act on both sides of the pole piece strip respectively, monitor the pole ears on both sides of the pole piece strip and determine the position of the pole piece strip, ensuring that the pole piece strip is transmitted according to the predetermined path in the subsequent process.

[0159] Specifically, Figure 3 , 6 As shown in , 7, the process correction component 35 includes:

[0160] The first deflection correcting bracket 3501 is disposed on one side of the machine platform 2, and two first ball bearings 3502 are disposed opposite to each other on the first deflection correcting bracket 3501;

[0161] A second ball screw 3503, both ends of which are respectively arranged in two first ball bearings 3502, on which a second screw transmission block 3504 is arranged, and the bottom end of the second screw transmission block 3504 is slidably arranged in a sliding groove provided on the first deviation correcting bracket 3501, and a second motor 3505 is arranged on the first deviation correcting bracket 3501, and an output end of the second motor 3505 is fixedly connected to one end of the second ball screw 3503 through a coupling;

[0162] Two photoelectric sensors 3506 are respectively arranged on the inner wall of one side of the first deviation-correcting bracket 3501;

[0163] The induction sheet 3507 is arranged on the second lead screw transmission block 3504. The second lead screw transmission block 3504 drives the induction sheet 3507 to move between the two photoelectric sensors 3506 to detect the distance position of the movement of the second lead screw transmission block 3504.

[0164] An adjustment handle 3508 is disposed at an end of the second ball screw 3503 away from the second motor 3505. A first display is disposed at the end of the adjustment handle 3508 for viewing the adjustment distance when the adjustment handle 3508 is manually adjusted;

[0165] The mounting frame 3509 is arranged at the bottom side of the first deviation correcting bracket 3501. The bottom end of the first deviation correcting bracket 3501 is fixedly provided with a first ball linear guide rail. The first ball linear guide rail is provided with a first slider. The first slider is connected to the first driving unit 3510. The first driving unit 3510 is used to drive the first slider to slide along a straight line on the first ball linear guide rail.

[0166] Two ultrasonic mounting plates 3511, one side of the two ultrasonic mounting plates 3511 is slidably mounted on a first slide rail provided on the side wall of the mounting frame 3509, the two ultrasonic mounting plates 3511 are arranged opposite to each other and one side of the two ultrasonic mounting plates is provided with a groove for the pole piece to pass through, and the inner side walls of the two ultrasonic mounting plates 3511 are provided with ultrasonic sensors 3516;

[0167] A driving member 3512, the driving member 3512 is disposed in a second mounting cavity provided in the mounting frame 3509, and is used to drive the two ultrasonic mounting plates 3511 to move relative to each other;

[0168] The second fixed frame 3513 is disposed on one side of the machine platform 2. Two guide rollers 3514 are respectively disposed in the second fixed frame 3513. A deviation correction controller 3515 is disposed on one side of the second fixed frame 3513.

[0169] It should be noted that the second motor 3505 in the process correction component 35 drives the second ball screw 3503 to rotate, and the second screw transmission block 3504 drives the induction plate 3507 to move. The ultrasonic sensor 3516 detects the position of the current pole piece material roll, and the relative position of the two ultrasonic mounting plates 3511 is adjusted by the driving part 3512 according to the pole piece material position monitored by the reinforcement rib component 34. The first driving part 3510 adjusts the position of the mounting frame 3509, thereby realizing real-time position monitoring and automatic correction of the pole piece material.

[0170] Specifically, Figure 3 , 8 , 9, and 10, the laser cutting assembly 36 includes:

[0171] The laser base 3601 is arranged at one side of the machine platform 2. The laser base 3601 is provided with a second slide rail, on which a transverse baffle 3602 is slidably arranged. The laser base 3601 is also provided with a driving mechanism 3603 for driving the transverse baffle 3602 to slide on the second slide rail.

[0172] A support frame 3613 is fixedly mounted on the transverse baffle 3602. A laser block 3604 is mounted on the support frame 3613. A laser cutting member 3605 for cutting the pole piece is mounted on the laser block 3604.

[0173] The cleaning chamber 3606 is fixedly arranged on one side of the laser base 3601. A slot 3607 for inserting one side of the pole ear is provided at the upper end of the cleaning chamber 3606. A negative pressure mechanism 3608 communicating with the cleaning chamber 3606 is provided on one side of the cleaning chamber 3606.

[0174] The air blowing control mechanism 3609 is disposed on the side wall of the laser base 3601 and is used to blow air into the interior of the cleaning chamber 3606;

[0175] The fluid air knife 3610 is arranged on one side of the upper end of the cleaning chamber 3606. The fluid air knife 3610 and the air blowing control mechanism 3609 are used to blow the dust and slag generated by the electrode cutting into the negative pressure mechanism 3608. The negative pressure mechanism 3608 is externally connected to a dust collection system.

[0176] A heat shield 3611 is provided with a through hole on one side of the cleaning chamber 3606 away from the air blowing control mechanism 3609. The heat shield 3611 is arranged opposite to the through hole through a connecting plate to prevent the heat generated during the cutting process from affecting the cutting operation.

[0177] The roller mechanism 3612 is provided on the laser base 3601 and is located directly below the cleaning chamber 3606. The roller mechanism 3612 is used to guide the pole piece strip to be transferred to the next process;

[0178] It should be noted that the driving mechanism 3603 on the laser base 3601 drives the transverse baffle 3602 to slide on the second slide rail, so that the laser cutting head can move along the width direction of the pole piece material strip, and realize multi-segment cutting along the horizontal direction of the pole piece material strip. The laser cutting part 3605 on the laser block 3604 cuts the pole piece material strip. The dust and slag generated during the cutting process are collected through the cleaning chamber 3606, and these dust and slag are blown into the negative pressure mechanism 3608 through the blowing control mechanism 3609 and the fluid air knife 3610, and discharged by the negative pressure mechanism 3608 through the dust collection system. The through hole of the cleaning chamber 3606 is provided with a heat insulation cover 3611 to prevent the heat generated during the cutting process from affecting the processing operation.

[0179] Specifically, Figure 3 , 11 As shown, the main drive assembly 37 includes:

[0180] The main drive fixed frame 3701 is arranged on one side of the machine table 2. A pressure roller cylinder 3702 is arranged on the upper end of the main drive fixed frame 3701. The output end of the pressure roller cylinder 3702 movably passes through the main drive fixed frame 3701 and is connected to a lifting seat 3703. Four linear bearing seats 3704 are arranged on the main drive fixed frame 3701. Guide rods 3705 are slidably arranged in the four linear bearing seats 3704. The bottom ends of the four guide rods 3705 are respectively fixedly connected to the four corners of the upper end of the lifting seat 3703.

[0181] Two bearing fixing plates 3706, the two bearing fixing plates 3706 are relatively arranged on two opposite sides of the bottom end of the main drive fixing frame 3701;

[0182] A pressure roller 3707, with pressure roller 3707 shafts fixedly disposed at both ends of the pressure roller 3707, and the pressure roller 3707 shafts are respectively disposed in two bearing fixing plates 3706;

[0183] The second ball bearings 3708 are respectively arranged on two sides of the main drive fixing frame 3701;

[0184] A main driving roller 3709, with main driving roller 3709 shafts fixedly disposed at both ends of the main driving roller 3709, the main driving roller 3709 shafts are respectively disposed in the second ball bearings 3708, and a main driving motor 3714 for driving the main driving roller 3709 to rotate is disposed on one side of the main driving fixed frame 3701;

[0185] Two axle ear fixing blocks 3710 are arranged on the inner walls of the main drive fixing frame 3701 on both sides, and one side of the two axle ear fixing blocks 3710 is connected to axle ear folding pieces 3712 through axle ear fixing rods 3711;

[0186] Furthermore, the supporting ear folding piece 3712 is an arc-shaped plate, and the side close to the main driving roller 3709 is convex, and the gap between the supporting ear folding piece 3712 and the main driving roller 3709 is 1.5 mm;

[0187] The dust collecting hood 3713 is arranged on the bottom side of the inner wall of the fixing frame and is located directly below the main driving roller 3709. The dust collecting hood 3713 is provided with a brush mechanism for cleaning the surface of the main driving roller 3709, and is used to clean the dust and debris adhered to the main driving roller 3709 during the production process;

[0188] It should be noted that the main drive motor 3714 in the main drive assembly 37 drives the main drive roller 3709 to rotate, and the main drive roller 3709 drives the pole piece material strip to be conveyed forward through the friction force with the pole piece material strip. When it is necessary to adjust the pressure between the pressure roller 3707 and the pole piece material strip, the lifting seat 3703 is driven up and down by the pressure roller cylinder 3702, and the guide rod 3705 and the linear bearing seat 3704 ensure that the lifting seat 3703 moves smoothly, thereby driving the pressure roller 3707 to move up and down to adjust the contact pressure between the pressure roller 3707 and the pole piece material strip.

[0189] Specifically, Figure 3 , 12 As shown, the high-speed air knife assembly 38 includes two dust removal mechanisms disposed opposite to each other up and down, wherein the dust removal mechanism includes:

[0190] The third fixed frame 3801 is disposed on one side of the machine platform 2, and a roller support 3803 is fixedly disposed on the third fixed frame 3801;

[0191] The roller 3802 is arranged in the installation grooves provided on both sides of the roller bracket 3803;

[0192] Two connecting rods 3804, both ends of the two connecting rods 3804 are respectively fixedly connected to the inner walls of the third fixing frame 3801, and the two connecting rods 3804 are fixedly provided with clamping blocks 3805 and fixing brackets 3806, one side of the clamping block 3805 is fixedly connected with a clamping hoop 3807, and a connecting pipe 3808 is fixedly installed in the mounting hole of the fixing bracket 3806;

[0193] The contour cover 3809 is fixedly arranged at one end of the connecting tube 3808, and the contour cover 3809 is connected to the connecting tube 3808. The contour cover 3809 is provided with an air knife mechanism for sucking air from the surface of the electrode piece;

[0194] A dust suction pipe 3810, the dust suction pipe 3810 is connected to the connecting pipe 3808, and the dust suction pipe 3810 is arranged in the clamping hoop 3807, and the dust suction pipe 3810 is externally connected to the dust collection system;

[0195] It should be noted that when the pole piece material strip passes through the roller 3802, the wind knife mechanism in the contour cover 3809 generates a high-speed airflow to suck in the dust and impurities generated during the cutting process. The dust suction pipe 3810 is connected to the contour cover 3809 through the connecting pipe 3808, collects the blown dust and impurities, and discharges them through an external dust collection system. The two dust removal mechanisms clean the front and back sides of the pole piece material strip respectively; in this scheme, an air blowing pipe is also provided for blowing away dust and impurities.

[0196] Specifically, Figure 1 , 2 As shown, the lamination mechanism 4 includes a tail roll assembly 41, a lamination table assembly 42, a diaphragm unwinding assembly 43, a transfer robot 44, a first lamination robot 45, a second lamination robot 46, a third lamination robot 47, a pole piece belt assembly 48, a glue clamping assembly 49, a glue assembly 410 and a material unloading robot 411;

[0197] The stacking platform assembly 42 is disposed on the machine platform 2 and located on one side of the negative pressure operation assembly 313, and is used to provide a stacking operation platform;

[0198] The membrane unwinding assembly 43 is disposed on one side of the lamination table assembly 42 and is used to unwind the membrane material from a roll state and transport it to the lamination area;

[0199] The transfer robot 44 is arranged on the opposite side of the diaphragm unwinding assembly 43 and is used to transport the diaphragm and the electrode between various processes;

[0200] The first lamination robot 45, the second lamination robot 46 and the third lamination robot 47 are sequentially arranged on one side of the transfer robot 44, and are used to perform lamination tasks and place the pole pieces and diaphragms;

[0201] The pole piece belt assembly 48 is arranged on the opposite side of the first lamination robot 45, the second lamination robot 46 and the third lamination robot 47, and is used to transport the pole piece to a designated position;

[0202] The glue clamping assembly 49 is arranged on one side of the third lamination robot 47 and is used to fix the battery cell after lamination is completed;

[0203] The adhesive tape component 410 is disposed on one side of the adhesive tape clamping component 49 and is used to attach a functional adhesive tape to the battery cell;

[0204] The QR code attaching component 412 is disposed on the opposite side of the adhesive attaching component 410 and is used to attach a QR code to the battery cell to track the production information, batch number, and production date of the battery cell, so as to facilitate subsequent quality management and traceability;

[0205] The battery cell buffer tray 413 is disposed on one side of the QR code attaching component 412 and is used to provide a temporary storage area for the battery cells;

[0206] The unloading robot 411 is disposed between the gluing assembly 410 and the QR code attaching assembly 412, and is used to move the battery cells that have completed lamination and gluing from the gluing assembly 410 to the QR code attaching assembly 412, and to move the finished battery cells from the battery cell buffer tray 413 to the next process or storage area;

[0207] The tail winding assembly 41 is arranged on the opposite side of the lamination table assembly 42 and is used for winding up the excess pole pieces or diaphragms.

[0208] The battery pole piece laser die cutting and lamination method of this scheme includes the following steps:

[0209] When laser die-cutting the battery pole piece, firstly, the pole piece material roll is mounted on the unwinding assembly 31, the pole piece material strip is unwound through the unwinding assembly 31, and the pole piece material strip is connected to the tape connection platform assembly 32 through the tension swing roller 33;

[0210] The pole piece strip is passed through the reinforcing rib assembly 34, the process deviation correction assembly 35, the laser cutting assembly 36, the main drive assembly 37, the high-speed air knife assembly 38, the floating roller assembly 39, the buffer assembly 310, the defect detection assembly and the cutting assembly 312 in sequence;

[0211] The pole piece material strip first passes through the reinforcing rib assembly 34, and is pressed and kept flat by the spur roller 3410 and the rubber-coated roller 3402; enters the process correction assembly 35, and detects and adjusts the position of the pole piece material strip through the ultrasonic sensor 3516; passes through the laser cutting assembly 36, uses the laser cutting piece 3605 to accurately cut the pole piece material strip, and uses the fluid wind knife 3610 and the blowing control mechanism 3609 to remove the dust generated by the cutting; when passing through the main drive assembly 37, the main drive motor 3714 drives the main drive roller 3709 to drive the pole piece material strip to be smoothly conveyed; then passes through the high-speed wind knife assembly 38, and the high-speed airflow cleans the surface of the pole piece material strip; adjusts the tension of the pole piece material strip through the floating roller assembly 39, and then enters the cache assembly 310 for temporary storage; detects and marks defects on the pole piece material strip through the defect detection assembly; cuts according to the preset size through the cutting assembly 312 to form a single pole piece, and the processed pole piece is conveyed to the lamination mechanism 4 through the negative pressure operation assembly 313;

[0212] The diaphragm unwinding assembly 43 unwinds the diaphragm from the material roll and conveys it, the electrode belt assembly 48 conveys the positive electrode and the negative electrode, the first stacking robot 45, the second stacking robot 46 and the third stacking robot 47 stack the positive electrode, the diaphragm and the negative electrode on the stacking table assembly 42 in turn to form a multi-layer composite structure to form a battery cell. After the stacking is completed, the glue clamping assembly 49 fixes the battery cell, the glue assembly 410 attaches functional tape on its surface, the unloading robot 411 moves the battery cell with completed glue from the glue assembly 410 to the QR code attaching assembly 412, the QR code attaching assembly 412 attaches a QR code label on the battery cell, and the battery cell with completed QR code attachment is conveyed to the battery cell buffer tray 413, and finally the finished battery cell is removed by the unloading robot 411 to complete the process.

[0213] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. Battery pole piece laser die cutting and lamination integrated device, characterized in that: include: A main controller (1) and a machine (2), wherein two die-cutting mechanisms (3) are disposed opposite to each other on both sides of the machine (2), and the two die-cutting mechanisms (3) are used to cut the positive electrode and negative electrode sheet strips to form positive electrode sheets and negative electrode sheets, respectively; and a laminating mechanism (4) for laminating the positive electrode sheets and the negative electrode sheets is also disposed at one end of the machine (2); Wherein, the die-cutting mechanism (3) comprises: An unwinding assembly (31), arranged on one side of the machine platform (2), and used for installing and unwinding a pole piece roll of a pole piece strip; The tape connection platform assembly (32) is arranged above the unwinding assembly (31) and is used to provide a platform for replacing the pole piece tape, and to connect the new pole piece tape with the pole piece tape that is about to be used up, so as to achieve seamless switching; A tension swing roller (33), arranged above the tape connection platform assembly (32), for transmitting and adjusting the tension of the pole piece tape; At least two reinforcing rib assemblies (34) are respectively arranged on one side of the machine platform (2) in an upper and lower manner and located to the right of the tension swing roller (33), and are respectively used to press the two sides of the pole piece strip and limit the two sides thereof; A process deviation correction component (35) is arranged on the right side of the reinforcing rib component (34) and is used to monitor and adjust the position of the pole piece material strip to prevent the pole piece material strip from shifting or deviating from the predetermined path during the transmission process; A laser cutting assembly (36) is arranged below the process deviation correction assembly (35) and is used to trim the edge of the pole piece strip and cut the pole piece strip in the horizontal direction of the pole piece strip during the conveying process in multiple sections according to a preset cutting size to form a plurality of pole piece strips; A main drive assembly (37), arranged on the right side of the laser cutting assembly (36), for driving the pole piece strip to be smoothly conveyed; A high-speed air knife assembly (38) is arranged on the right side of the main drive assembly (37) and uses high-speed airflow to impact the front and back surfaces of the pole piece strip to clean the pole piece surface; The floating roller assembly (39) is used to adjust the tension of the pole piece material strip during the transmission process to prevent the pole piece material strip from being loosened or over-tightened. The floating roller assembly (39) includes a floating roller fixing frame (3901), a rotating rod (3902), a floating roller (3903), a counterweight rod (3904) and a locking cylinder (3905). The floating roller fixing frame (3901) is arranged on one side of the machine platform (2). Two swing arm mounting plates (3906) are respectively arranged on the inner walls on the opposite sides of the floating roller fixing frame (3901). The middle parts of the adjacent side walls of the two swing arm mounting plates (3906) are respectively fixedly connected to the two ends of the rotating rod (3902). One end of the rotating rod (3902) is installed with a swing shaft (3907). The swing shaft (390 7) the floating roller fixing frame (3901) is extended and an angle sensor (3908) is arranged at one end thereof, a movable plate (3909) is fixedly arranged on the swing shaft (3907), a cam follower (3910) is fixedly arranged on the movable plate (3909), two ends of the counterweight rod (3904) are respectively fixedly connected to one end of the adjacent side walls of the two swing arm mounting plates (3906), two ends of the floating roller (3903) are respectively rotatably connected to the other end of the adjacent side walls of the two swing arm mounting plates (3906), a locking cylinder (3905) is fixedly arranged on the side wall of the floating roller fixing frame (3901), and the piston rod of the locking cylinder (3905) is hinged to the side wall of the cam follower (3910); A buffer assembly (310) is arranged on the right side of the floating roller assembly (39), and the buffer assembly (310) provides buffer storage for the electrode strip processed by the previous process; A winding assembly (311) is arranged above the buffer assembly (310) and is used to orderly wind up the processed pole piece strip; A cutting component (312) is arranged on the right side of the buffer component (310) and is used to cut the electrode material strip in the conveying process into multiple sections in a vertical direction of the electrode material strip according to a preset cutting size to form electrode strips; A negative pressure operation component (313) is arranged on the right side of the cutting component (312) and is used to transfer the cut pole pieces to the lamination mechanism (4); A plurality of guide roller assemblies (314) are respectively arranged on one side of the machine platform (2) and are used to guide the path of the pole piece roll to ensure its orderly transmission between various processes.

2. The integrated device for laser die cutting and laminating battery pole pieces according to claim 1, characterized in that: A defect detection component is provided between the buffer component (310) and the cutting component (312), and the defect detection component includes a camera mounting frame and an optical camera arranged on the camera mounting frame. The camera mounting frame is arranged on one side of the machine platform (2), and the optical camera is used to capture a detection image of a detection area corresponding to a point to be tested on the electrode material strip.

3. The integrated device for laser die cutting and laminating battery pole pieces according to claim 2, characterized in that: The belt connection platform assembly (32) comprises: A tape connection fixing frame (3201) is arranged on one side of the machine platform (2); a tape connection plate (3202) for connecting the tape to the splice is provided on the tape connection fixing frame (3201); a cutting groove (3203) is provided on the tape connection plate (3202); two scale bars (3204) are respectively arranged on both sides of the cutting groove (3203); A first pole piece pressure rod (3205), wherein two first guide shafts (3206) are fixedly arranged at the bottom sides of both ends of the first pole piece pressure rod (3205), and the two first guide shafts (3206) are respectively slidably arranged in two first linear bearings (3207) arranged on the belt connection fixing frame (3201); A second pole piece pressure rod (3208), two second guide shafts (3209) are fixedly arranged on the bottom sides of both ends of the second pole piece pressure rod (3208), and the two second guide shafts (3209) are respectively slidably arranged in two second linear bearings (3210) arranged on the belt fixing frame (3201); A first driving device, the first driving device is arranged in a first installation cavity (3211) opened in the connecting strap fixing frame (3201), and the bottom ends of the two first guide shafts (3206) are connected to the first driving device to drive the first pole piece pressure rod (3205) to move in a direction close to or away from the connecting strap plate (3202); A second driving device, the second driving device is arranged in a first installation cavity (3211) opened in the connecting strap fixing frame (3201), and the bottom ends of the two second guide shafts (3209) are connected to the second driving device to drive the second pole piece pressure rod (3208) to move in a direction close to or away from the connecting strap plate (3202); An auxiliary material placement box (3212), the auxiliary material placement box (3212) is fixedly arranged at one end of the belt connection fixing frame (3201); A dust collecting bin is arranged in a first installation cavity (3211) opened in the belt connecting fixing frame (3201), the upper side of the dust collecting bin is connected to the cutting groove (3203), and one end of the dust collecting bin extends to the outside of the belt connecting fixing frame (3201) and is connected to a dust collecting system.

4. The integrated device for laser die cutting and laminating battery pole pieces according to claim 3 is characterized in that: The reinforcing rib assembly (34) comprises: A first fixed frame (3401) is arranged on one side of the machine platform (2), and two first floating pressure blocks (3415) are respectively fixedly arranged on the inner walls on two opposite sides of the first fixed frame (3401); A rubber-coated roller (3402), wherein the two ends of the rubber-coated roller (3402) are respectively fixedly provided with a rubber-coated roller (3402) shaft, and the rubber-coated roller (3402) shaft is respectively arranged in the two first floating pressure blocks (3415); A horizontal linear rail (3403), one side of which is fixedly disposed on the inner side wall of the first fixed frame (3401), and a horizontal sliding block (3414) is slidably disposed on the horizontal linear rail (3403); A first ball screw (3404), wherein two ends of the first ball screw (3404) are respectively arranged in two bearing seats, and the two bearing seats are fixedly arranged on the inner side wall of the first fixing frame (3401); A first motor (3405) is fixedly arranged on one side of the first fixing frame (3401), and an output end of the first motor (3405) is fixedly connected to one end of the first ball screw (3404); A first screw transmission block (3406) is arranged on the first ball screw (3404), the first screw transmission block (3406) is fixedly arranged at the bottom end of the horizontal slider (3414), and a cylinder mounting plate (3409) is fixedly arranged on one side of the first screw transmission block (3406); A lifting cylinder (3407), wherein the lifting cylinder (3407) is fixedly mounted on the cylinder mounting plate (3409); A connecting frame (3408), the bottom end of the connecting frame (3408) is fixedly connected to the output end of the lifting cylinder (3407), and two second floating pressure blocks (3411) are fixedly arranged on opposite sides of the inner wall of the connecting frame (3408); A spur-tooth roller (3410), wherein two spur-tooth roller (3410) shafts are fixedly disposed at both ends of the spur-tooth roller (3410), and the two spur-tooth roller (3410) shafts are respectively disposed in two of the second floating pressure blocks (3411); The sensor mounting plate (3412) is fixedly mounted on the side wall of the connecting frame (3408), and two induction tab sensors (3413) are relatively mounted on the side wall of the sensor mounting plate (3412) away from the connecting frame (3408).

5. The integrated device for laser die cutting and laminating battery pole pieces according to claim 4, characterized in that: The process deviation correction component (35) comprises: A first deviation-correcting bracket (3501) is arranged on one side of the machine platform (2), and two first ball bearings (3502) are arranged opposite to each other on the first deviation-correcting bracket (3501); A second ball screw (3503), wherein both ends of the second ball screw (3503) are respectively arranged in two first ball bearings (3502), and a second screw transmission block (3504) is arranged thereon, and the bottom end of the second screw transmission block (3504) is slidably arranged in a sliding groove provided on the first deviation correcting bracket (3501), and a second motor (3505) is arranged on the first deviation correcting bracket (3501), and an output end of the second motor (3505) is fixedly connected to one end of the second ball screw (3503) through a coupling; Two photoelectric sensors (3506) are respectively arranged on the inner wall of one side of the first deviation-correcting bracket (3501); A sensing sheet (3507) is arranged on the second lead screw transmission block (3504), and the second lead screw transmission block (3504) drives the sensing sheet (3507) to move between the two photoelectric sensors (3506) so as to detect the distance position of the movement of the second lead screw transmission block (3504); An adjustment handle (3508) is arranged at an end of the second ball screw (3503) away from the second motor (3505), and a first display is provided at the end of the adjustment handle (3508) for viewing the adjustment distance when manually adjusting the adjustment handle (3508); The mounting frame (3509) is arranged on the bottom side of the first deviation-correcting bracket (3501), the bottom end of the first deviation-correcting bracket (3501) is fixedly provided with a first ball linear guide, the first ball linear guide is provided with a first slider, the first slider is connected to the first driving unit (3510), and the first driving unit (3510) is used to drive the first slider to slide along a straight line on the first ball linear guide; Two ultrasonic mounting plates (3511), one side of each of the two ultrasonic mounting plates (3511) being slidably disposed on a first slide rail provided on a side wall of the mounting frame (3509), the two ultrasonic mounting plates (3511) being disposed opposite to each other and one side of each of the two ultrasonic mounting plates being provided with a groove for the pole piece to pass through, and an ultrasonic sensor (3516) being provided on the inner side walls of the two ultrasonic mounting plates (3511); A driving member (3512), the driving member (3512) being arranged in a second mounting cavity provided in the mounting frame (3509) so as to drive the two ultrasonic mounting plates (3511) to move relative to each other; The second fixed frame (3513) is arranged on one side of the machine platform (2), two guide rollers (3514) are respectively arranged in the second fixed frame (3513), and a deviation correction controller (3515) is arranged on one side of the second fixed frame (3513).

6. The integrated device for laser die cutting and laminating battery pole pieces according to claim 5, characterized in that: The laser cutting assembly (36) comprises: A laser base (3601) is arranged on one side of the machine platform (2), the laser base (3601) is provided with a second slide rail, a transverse baffle (3602) is slidably arranged on the second slide rail, and the laser base (3601) is also provided with a driving mechanism (3603) for driving the transverse baffle (3602) to slide on the second slide rail; A support frame (3613) is fixedly arranged on the transverse baffle (3602), a laser card block (3604) is arranged on the support frame (3613), and a laser cutting piece (3605) for cutting the pole piece is arranged on the laser card block (3604); A cleaning chamber (3606) is fixedly arranged on one side of the laser base (3601), a slot (3607) for one side of the pole ear to be inserted is provided at the upper end of the cleaning chamber (3606), and a negative pressure mechanism (3608) in communication with the cleaning chamber (3606) is provided on one side of the cleaning chamber (3606); A blowing control mechanism (3609), disposed on the side wall of the laser base (3601), for blowing air into the interior of the cleaning chamber (3606); A fluid air knife (3610) is arranged on one side of the upper end of the cleaning chamber (3606); the fluid air knife (3610) and the air blowing control mechanism (3609) are used to blow the dust and slag generated by the cutting of the electrode piece into the negative pressure mechanism (3608); the negative pressure mechanism (3608) is externally connected to a dust collection system; A heat shield (3611), wherein a through hole is provided on a side of the cleaning chamber (3606) away from the air blowing control mechanism (3609), and the heat shield (3611) is arranged opposite to the through hole through a connecting plate to prevent the heat generated during the cutting process from affecting the cutting operation; The roller mechanism (3612) is disposed on the laser base (3601) and is located directly below the cleaning chamber (3606). The roller mechanism (3612) is used to guide the pole piece material strip to be transferred to the next process.

7. The integrated device for laser die cutting and laminating battery pole pieces according to claim 6, characterized in that: The main drive assembly (37) comprises: A main drive fixed frame (3701) is arranged on one side of the machine platform (2), a pressure roller cylinder (3702) is arranged at the upper end of the main drive fixed frame (3701), an output end of the pressure roller cylinder (3702) movably passes through the main drive fixed frame (3701) and is connected to a lifting seat (3703), four linear bearing seats (3704) are arranged on the main drive fixed frame (3701), guide rods (3705) are slidably arranged in the four linear bearing seats (3704), and the bottom ends of the four guide rods (3705) are respectively fixedly connected to the four corners of the upper end of the lifting seat (3703); Two bearing fixing plates (3706), the two bearing fixing plates (3706) are arranged on opposite sides of the bottom end of the main drive fixing frame (3701); A pressure roller (3707), wherein the two ends of the pressure roller (3707) are respectively fixedly provided with a pressure roller (3707) shaft, and the pressure roller (3707) shaft is respectively arranged in two bearing fixing plates (3706); The second ball bearings (3708) are respectively arranged on two sides of the main drive fixing frame (3701) opposite to each other; A main drive roller (3709), wherein two ends of the main drive roller (3709) are respectively fixedly provided with a main drive roller (3709) shaft, and the main drive roller (3709) shaft is respectively arranged in a second ball bearing (3708), and a main drive motor (3714) for driving the main drive roller (3709) to rotate is arranged on one side of the main drive fixing frame (3701); Two axle ear fixing blocks (3710) are arranged on the inner walls of both sides of the main drive fixing frame (3701) opposite to each other, and one side of the two axle ear fixing blocks (3710) is connected to axle ear folding pieces (3712) through axle ear fixing rods (3711); The dust collecting hood (3713) is arranged on the bottom side of the inner wall of the fixing frame and is located directly below the main driving roller (3709). A brush mechanism for cleaning the surface of the main driving roller (3709) is arranged in the dust collecting hood (3713).

8. The integrated device and method for laser die cutting and laminating battery pole pieces according to claim 7, characterized in that: The high-speed air knife assembly (38) comprises two dust removal mechanisms disposed opposite to each other in an upper and lower direction, wherein the dust removal mechanism comprises: A third fixed frame (3801) is arranged on one side of the machine platform (2), and a roller bracket (3803) is fixedly arranged on the third fixed frame (3801); A roller (3802), wherein the roller (3802) is arranged in mounting grooves provided on both sides of the roller support (3803); Two connecting rods (3804), the two ends of the two connecting rods (3804) are respectively fixedly connected to the two sides of the inner wall of the third fixing frame (3801), the two connecting rods (3804) are fixedly provided with a clamping block (3805) and a fixing bracket (3806), one side of the clamping block (3805) is fixedly connected with a clamping hoop (3807), and a connecting pipe (3808) is fixedly installed in the mounting hole of the fixing bracket (3806); A contoured cover (3809) is fixedly arranged at one end of the connecting tube (3808), and the contoured cover (3809) is connected to the connecting tube (3808), and a wind knife mechanism for sucking air from the surface of the pole piece is arranged in the contoured cover (3809); A dust suction pipe (3810), the dust suction pipe (3810) is connected to the connecting pipe (3808), and the dust suction pipe (3810) is arranged in the clamping hoop (3807), and the dust suction pipe (3810) is connected to an external dust collection system.

9. The integrated device for laser die cutting and laminating battery pole pieces according to claim 1, characterized in that: The lamination mechanism (4) comprises a tail roll assembly (41), a lamination platform assembly (42), a diaphragm unwinding assembly (43), a transfer robot (44), a first lamination robot (45), a second lamination robot (46), a third lamination robot (47), a pole piece belt assembly (48), a glue clamping assembly (49), a glue assembly (410) and a material unloading robot (411); A stacking platform assembly (42) is arranged on the machine platform (2) and located on one side of the negative pressure operation assembly (313), and is used to provide a stacking operation platform; A diaphragm unwinding assembly (43) is arranged on one side of the lamination table assembly (42) and is used to unwind the diaphragm material from a roll state and transport it to the lamination area; A transfer robot (44), arranged on the opposite side of the diaphragm unwinding assembly (43), is used to transport the diaphragm and the electrode between various processes; The first lamination robot (45), the second lamination robot (46) and the third lamination robot (47) are sequentially arranged on one side of the transfer robot (44) and are used to perform lamination tasks and place the pole pieces and the diaphragms; A pole piece belt assembly (48) is arranged on the opposite side of the first lamination robot (45), the second lamination robot (46) and the third lamination robot (47) and is used to transport the pole piece to a designated position; A glue clamping assembly (49) is arranged on one side of the third lamination robot (47) and is used to fix the battery core after lamination is completed; A glue sticking assembly (410) is arranged on one side of the glue sticking clamping assembly (49) and is used to stick a functional adhesive tape on the battery cell; A two-dimensional code attaching component (412) is arranged on the opposite side of the adhesive attaching component (410) and is used to attach a two-dimensional code to the battery cell to track the production information, batch number, and production date of the battery cell, so as to facilitate subsequent quality management and traceability; A battery cell buffer tray (413), arranged on one side of the QR code attaching component (412), is used to provide a temporary storage area for the battery cells; A material unloading robot (411) is arranged between the gluing assembly (410) and the two-dimensional code attaching assembly (412), and is used to move the battery cells that have completed lamination and gluing from the gluing assembly (410) to the two-dimensional code attaching assembly (412), and to move the finished battery cells on the battery cell buffer tray (413) to the next process or storage area; The tail winding assembly (41) is arranged on the opposite side of the lamination table assembly (42) and is used to roll up the excess pole pieces or diaphragms.

10. A battery pole piece laser die cutting and lamination method, applicable to the battery pole piece laser die cutting and lamination integrated device according to any one of claims 1 to 9, characterized in that: The steps include: S1. When laser die-cutting the battery pole piece, first install the pole piece roll on the unwinding assembly, unwind the pole piece strip through the unwinding assembly, connect the pole piece strip to the strip connection platform assembly through the tension swing roller, and make the pole piece strip pass through the reinforcing rib assembly, process correction assembly, laser cutting assembly, main drive assembly, high-speed air knife assembly, floating roller assembly, buffer assembly, defect detection assembly and cutting assembly in sequence; S2. The pole piece material strip first passes through the reinforcing rib assembly, and is pressed and kept flat by the spur roller and the rubber-coated roller; enters the process correction assembly, and detects and adjusts the position of the pole piece material strip through the ultrasonic sensor; passes through the laser cutting assembly, uses the laser cutting parts to accurately cut the pole piece material strip, and removes the dust generated by the cutting by the fluid air knife and the blowing control mechanism; when passing through the main drive assembly, the main drive motor drives the main drive roller to drive the pole piece material strip to be smoothly conveyed; then passes through the high-speed air knife assembly, and the surface of the pole piece material strip is cleaned by the high-speed airflow; adjusts the tension of the pole piece material strip through the floating roller assembly, and enters the cache assembly for temporary storage; detects and marks defects on the pole piece material strip through the defect detection assembly; finally, it is cut according to the preset size through the cutting assembly to form a single pole piece, and the processed pole piece is conveyed to the lamination mechanism through the negative pressure operation assembly; S3. The diaphragm unwinding assembly unwinds the diaphragm from the material roll and conveys it, the electrode belt assembly conveys the positive electrode and the negative electrode, the first stacking robot, the second stacking robot and the third stacking robot stack the positive electrode, the diaphragm and the negative electrode on the stacking table assembly in turn to form a multi-layer composite structure to form a battery cell. After the stacking is completed, the glue clamping assembly fixes the battery cell, the glue assembly attaches functional tape on its surface, the unloading robot moves the battery cell with completed glue from the glue assembly to the QR code attaching assembly, the QR code attaching assembly attaches a QR code label on the battery cell, the battery cell with completed QR code attachment is conveyed to the battery cell cache tray, and finally the finished battery cell is removed by the unloading robot to complete the process.

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