High-precision film cutting and pasting integrated equipment

Abstract

The invention discloses high-precision film cutting and pasting integrated equipment which integrates multiple procedures to improve efficiency and precision. The equipment comprises a battery cell feeding and positioning mechanism, a protective film feeding mechanism, a turntable film pasting platform and other mechanisms. The protective film feeding mechanism can cut off a protective film and convey the protective film to the rotary disc film pasting platform. The battery cell feeding and positioning mechanism conveys and presses the battery cell on the platform protective film; the rotary table film pasting platform is transferred to a lower surface rolling device, and after lower surface rolling is completed, the upper surface rolling device folds and rolls the protective film on the upper surface of the battery cell; and the protective film detection mechanism detects film pasting defects, and finally, the battery cell discharging mechanism performs sorting and discharging. The equipment integrates film cutting, feeding, positioning, double-sided film pasting, rolling, detecting and discharging, intermediate transfer links are reduced, and the production efficiency and precision are effectively improved.

Description

Technical Field

[0001] The present application relates to the field of battery cell film laminating equipment, and in particular to a high-precision battery cell film cutting and laminating integrated equipment. Background Art

[0002] During the production of lithium-ion batteries and other battery cells, protective film is typically applied to the top and bottom surfaces of the cell to protect the cell casing from scratches or contamination. Traditional cell film application processes often involve multiple discrete steps and equipment. For example, independent cutting equipment first cuts the protective film into the required size. A loading mechanism then transports the cut film and cell to the film application station, where rollers or suction cups apply the film to the top and bottom surfaces of the cell. After film application, the cell is transferred to an inspection station for quality inspection and final sorting.

[0003] The above-mentioned decentralized, multi-station film laminating operation method has the problems of decentralized equipment layout, complex process connection, and multiple positioning and transportation of battery cells and protective films. This not only leads to low overall film laminating efficiency, but also easily produces cumulative errors during multiple transportation and positioning processes, directly affecting the laminating accuracy of the protective films on the upper and lower surfaces of the battery cells (such as position offset, bubbles, wrinkles, etc.) and the consistency of the final film laminating quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-precision film cutting and laminating integrated equipment that can integrate multiple processes such as film cutting, loading, positioning, double-sided film laminating, rolling, testing, and unloading, reduce intermediate transportation links, and improve efficiency and accuracy.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A high-precision film cutting and laminating integrated equipment, comprising a cell feeding and positioning mechanism, a protective film feeding mechanism, a turntable laminating platform, a protective film rolling device for the lower surface of the cell, a protective film rolling device for the upper surface of the cell, a protective film detection mechanism and a cell unloading mechanism; the protective film feeding mechanism is arranged on one side of the turntable laminating platform, and is used to cut the protective film and transport it to the turntable laminating platform; the cell feeding and positioning mechanism is arranged on one side of the turntable laminating platform, and is used to transport the cell to and press it onto the protective film on the turntable laminating platform; the turntable laminating platform is arranged on the One side of the battery cell lower surface protective film rolling device is used to transfer the protective film and the battery cell to the battery cell lower surface protective film rolling device; the battery cell lower surface protective film rolling device is used to roll the protective film on the lower surface of the battery cell; the battery cell upper surface protective film rolling device is arranged on one side of the battery cell lower surface protective film rolling device, and is used to fold the protective film upwards and roll it on the upper surface of the battery cell; the protective film detection mechanism is arranged on one side of the battery cell unloading mechanism, and is used to detect the film defects of the battery cell; the battery cell unloading mechanism is used to sort and unload the battery cells after film application.

[0007] Furthermore, the battery cell loading and positioning mechanism includes a pull belt, a first transport robot, a visual positioning device, a mechanical positioning device and a second transport robot; the first transport robot is arranged at the tail end of the pull belt, and is used to transfer the battery cells on the pull belt to the visual positioning device for visual positioning, and the mechanical positioning device is arranged on one side of the visual positioning device. The first transport robot transports the battery cells after visual positioning to the mechanical positioning device for mechanical positioning, and the second transport robot is used to transfer the battery cells after mechanical positioning to the protective film of the turntable film laminating platform.

[0008] Furthermore, the protective film loading mechanism includes a protective film roll unwinding device, a first protective film pulling device, a protective film cutting device, a second protective film pulling device, a protective film transfer device, a protective film handling robot and a protective film visual positioning device; the first protective film pulling device is arranged between the protective film roll unwinding device and the protective film cutting device, and is used to pull the protective film released by the protective film roll unwinding device to the protective film cutting device; the second protective film pulling device is arranged on one side of the protective film cutting device, and is used to clamp the protective film pulled out by the first protective film pulling device and pull it to the length to be cut; the protective film cutting device is used to cut the protective film; the protective film transfer device is arranged on one side of the second protective film pulling device, and is used to receive the cut protective film; the protective film handling robot is used to transfer the protective mold of the protective film transfer device to the protective film visual positioning device for positioning, and then transport it to the turntable film laminating platform after positioning.

[0009] Furthermore, the protective film roll unwinding device includes a first unwinding device and a second unwinding device, and the first unwinding device and the second unwinding device are arranged opposite to each other up and down.

[0010] Furthermore, the first unwinding device includes a first active rotary unwinding component, at least one group of first driven guide rollers and a first tensioning component. The first active rotary unwinding component is used to install the protective film of the roll material and drive it to perform a rotary unwinding movement. The first driven guide roller is arranged on one side of the first active rotary unwinding component to guide the released protective film so that it enters the first protective film pulling device. The first tensioning component is arranged on one side of the first driven guide roller to tension the protective film.

[0011] Furthermore, the turntable film-sticking platform includes a turntable device, a battery cell adsorption platform, a first lifting drive module and a protective film adsorption platform. The battery cell adsorption platform is installed on the first lifting drive module, and the first lifting drive module is installed on the turntable device to drive the battery cell adsorption platform to perform lifting movement. The protective film adsorption platform is arranged on the turntable device and is located on one side of the battery cell adsorption platform to support the protective film.

[0012] Furthermore, the battery cell lower surface protective film rolling device includes a first protective film rolling assembly and a first XYZ drive module. The first protective film rolling assembly is installed on the first XYZ drive module. The first XYZ drive module is used to drive the first protective film rolling assembly to move along the X, Y and Z axis directions.

[0013] Furthermore, the protective film rolling device on the upper surface of the battery cell includes a clamping roller assembly, a second XYZ drive module and a protective film rolling platform device, the clamping roller assembly is installed on the second XYZ drive module, the protective film rolling platform device is arranged on the front side of the clamping roller assembly, the protective film rolling platform is used to carry the protective film and the battery cell, and the clamping roller assembly clamps the protective film and rolls it on the upper surface of the battery cell under the drive of the second XYZ drive module.

[0014] Furthermore, the clamping roller assembly includes an upper clamping roller, a lower clamping roller and a clamping roller lifting drive module, the upper clamping roller is installed on the clamping roller lifting drive module, the lower clamping roller and the upper clamping roller are arranged opposite to each other up and down, and the clamping roller lifting drive module is used to drive the upper clamping roller to approach or move away from the lower clamping roller.

[0015] Furthermore, the battery cell unloading mechanism includes an unloading robot, an empty material frame feeding pull belt, an empty material frame transfer device and a material frame discharging pull belt. The empty material frame feeding pull belt is connected to the material frame discharging pull belt through the empty material frame transfer device. The empty material frame feeding pull belt transports the material frame to the empty material frame transfer device. The empty material frame transfer device transfers the material frame to the material frame discharging pull belt. The unloading robot places the battery cell into the material frame, and the material frame discharging pull belt unloads the full material frame.

[0016] The beneficial effects of this application are:

[0017] (1) This application effectively eliminates the cumulative errors caused by repeated transportation and multiple positioning of battery cells and protective films between multiple stations in traditional decentralized equipment by highly integrating key processes such as film cutting, battery cell loading and positioning, bottom surface film rolling, top surface film folding and rolling, testing and unloading into an integrated equipment platform. After the battery cell is positioned once on the turntable platform, the core actions such as bottom surface film application, film folding and top surface film application can be completed continuously, greatly reducing the number of positioning times and transportation links, thereby significantly improving the position accuracy of the protective film application on the upper and lower surfaces of the battery cell, effectively avoiding defects such as film offset, bubbles, wrinkles, etc. caused by positioning deviation and transportation vibration, and ensuring the consistency and high yield of the film application quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A top view of a high-precision film cutting and laminating integrated device provided in one embodiment of the present application;

[0019] Figure 2 A top view of a battery cell loading and positioning mechanism provided in one embodiment of the present application;

[0020] Figure 3 A three-dimensional diagram of a protective film feeding mechanism provided in one embodiment of the present application;

[0021] Figure 4 for Figure 3 A partial enlarged view of the cutting knife at point A;

[0022] Figure 5 A three-dimensional diagram of a turntable film laminating platform and a second manipulator provided in one embodiment of the present application;

[0023] Figure 6 A three-dimensional diagram of a turntable film-applying platform provided in one embodiment of the present application;

[0024] Figure 7 A three-dimensional diagram of a turntable film laminating platform and a battery cell bottom surface protective film rolling device provided in one embodiment of the present application;

[0025] Figure 8 A three-dimensional diagram of a device for rolling a protective film on the lower surface of a battery cell according to an embodiment of the present application;

[0026] Figure 9 A three-dimensional diagram of a device for rolling a protective film on a battery cell surface according to an embodiment of the present application;

[0027] Figure 10 for Figure 9 A partial enlarged view of the nip roller group at B;

[0028] Figure 11 A three-dimensional diagram of a device for detecting a protective film on a battery cell surface according to an embodiment of the present application;

[0029] Figure 12 A three-dimensional diagram of a device for detecting a protective film on the bottom surface of a battery cell according to an embodiment of the present application;

[0030] Figure 13 A three-dimensional diagram of a battery cell unloading mechanism provided in one embodiment of the present application;

[0031] Description of reference numerals:

[0032] Q, battery cell; W, protective film;

[0033] 100. Battery cell loading and positioning mechanism;

[0034] 110, pull belt; 120, first handling robot; 130, visual positioning device; 140, mechanical positioning device; 150, second handling robot;

[0035] 200. Protective film feeding mechanism;

[0036] 210, protective film roll unwinding device; 220, first protective film pulling device; 230, protective film cutting device; 240, second protective film pulling device; 250, protective film transfer device; 260, protective film handling robot; 270, protective film visual positioning device;

[0037] 211. First unwinding device; 212. Second unwinding device;

[0038] 2111, first active rotary unwinding assembly; 2112, first driven guide roller; 2113, first tensioning assembly; 2111a, first active unwinding roller; 2111b, first active driving device; 2113a, first tensioning roller; 2113b, first tensioning driving device;

[0039] 221, first upper pressing plate; 222, first lower pressing plate; 223, pressing plate lifting drive device; 224, pressing plate transverse movement device;

[0040] 231, lower cutting blade; 232, cutting blade driving device; 233, upper cutting blade; 231a, guide portion; 231b, blade portion;

[0041] 241. Gripping air claw; 242. Air claw traverse device;

[0042] 251. Protective film transfer platform; 252. Platform lifting drive device;

[0043] 300, turntable film laminating platform;

[0044] 310, turntable device; 320, battery cell adsorption platform; 330, first lifting drive module; 340, protective film adsorption platform;

[0045] 400. Rolling device for protective film on lower surface of battery cell;

[0046] 410, first protective film pressing roller assembly; 420, first XYZ drive module; 411, first protective mold pressing roller; 412, first pressing roller mounting seat; 421, first Z-axis module; 422, first Y-axis module; 423, first X-axis module;

[0047] 500. Rolling device for protective film on the upper surface of battery cell;

[0048] 510, clamping roller assembly; 520, second XYZ drive module; 530, protective film rolling platform device;

[0049] 511, upper clamping roller; 512, lower clamping roller; 513, clamping roller lifting drive module;

[0050] 521, second Z-axis module; 522, second Y-axis module; 523, second X-axis module;

[0051] 531. Place the battery cell on a vacuum adsorption platform; 532. Place the protective film on a vacuum adsorption platform;

[0052] 600. Protective film testing agency;

[0053] 610. Battery cell upper surface protective film detection device; 620. Battery cell lower surface protective film detection device;

[0054] 611, first battery cell moving platform; 612, battery cell upper surface detection CCD module;

[0055] 621. Second battery cell moving platform; 622. Battery cell bottom surface detection CCD module;

[0056] 700, battery cell unloading mechanism;

[0057] 710, unloading robot; 720, empty material frame feeding belt; 730, empty material frame transfer device; 740, material frame discharging belt; DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0059] Throughout the description of this application, it should be understood that the terms "upper," "lower," "left," and "right," etc., are used solely to facilitate description and simplify the description of this application. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. In particular, in the claims, when the term "upper" follows a noun, it should be understood that the entire interior and exterior surfaces of the structure referred to by the noun meet the definition of "upper."

[0060] The following is a detailed description of the specific implementation methods, structures, features and functions provided by this application in conjunction with the accompanying drawings and preferred embodiments.

[0061] like Figure 1 , a top view of a high-precision film cutting and laminating integrated device;

[0062] It includes a cell loading and positioning mechanism 100, a protective film loading mechanism 200, a turntable film laminating platform 300, a cell bottom surface protective film rolling device 400, a cell top surface protective film rolling device 500, a protective film detection mechanism 600 and a cell unloading mechanism 700; the protective film loading mechanism 200 is arranged on one side of the turntable film laminating platform 300, and is used to cut the protective film and transport it to the turntable film laminating platform 300; the cell loading and positioning mechanism 100 is arranged on one side of the turntable film laminating platform 300, and is used to transport the cell to and press it onto the protective film on the turntable film laminating platform 300; the turntable film laminating platform 300 It is arranged on one side of the battery cell lower surface protective film rolling device 400, and is used to transfer the protective film and the battery cell to the battery cell lower surface protective film rolling device 400; the battery cell lower surface protective film rolling device 400 is used to roll the protective film on the lower surface of the battery cell; the battery cell upper surface protective film rolling device 500 is arranged on one side of the battery cell lower surface protective film rolling device 400, and is used to fold the protective film upwards and roll it on the upper surface of the battery cell; the protective film detection mechanism 600 is arranged on one side of the battery cell unloading mechanism 700, and is used to detect the film defects of the battery cell; the battery cell unloading mechanism 700 is used to sort and unload the battery cells after film application.

[0063] like Figure 2 , a top view of a cell loading and positioning mechanism 100 , which is used to load a cell Q;

[0064] In one embodiment, the battery cell loading and positioning mechanism 100 includes a pull belt 110, a first handling robot 120, a visual positioning device 130, a mechanical positioning device 140, and a second handling robot 150;

[0065] The first transport robot 120 is arranged at the tail end of the pull belt, and is used to transfer the battery cells on the pull belt to the visual positioning device for visual positioning. The mechanical positioning device 140 is arranged on one side of the visual positioning device. The first transport robot 120 transfers the battery cells after visual positioning to the mechanical positioning device 140 for mechanical positioning. The second transport robot 150 is used to transfer the battery cells after mechanical positioning to the protective film of the turntable film laminating platform 300.

[0066] This embodiment ensures extremely high positioning accuracy through dual visual and mechanical positioning, and realizes highly efficient automated continuous production through the division of labor and cooperation of two robots, thereby significantly improving the quality, speed and reliability of the film lamination process.

[0067] The visual positioning device 130 uses a high-resolution industrial camera (such as a CMOS or linear array CCD) with a telecentric lens, and a ring-shaped blue LED light source or backlight to eliminate reflections and clearly capture images of the battery cells. The camera captures the battery cells being transported by the pull belt, and obtains the position offset (X / Y axis) and rotation angle of the battery cells. This data is then transmitted to the robot arm, which, after adjustment, places the battery on the mechanical positioning device 140 for secondary calibration to ensure film application accuracy.

[0068] The mechanical positioning device 140 uses a combination of "multi-directional positioning block + cylinder / servo drive" to achieve precise positioning of the battery cell using side rigid contact.

[0069] A buffer device 160 is further provided on one side of the first handling robot 120 for temporarily buffering battery cells.

[0070] like Figure 3 The protective film feeding mechanism 200 is shown in a perspective view, which is used to unwind the protective film roll and cut it into a specified length. The protective film has a single-sided adhesive film, that is, an upper surface with an adhesive layer;

[0071] In one embodiment, the protective film loading mechanism 200 includes a protective film roll unwinding device 210, a first protective film pulling device 220, a protective film cutting device 230, a second protective film pulling device 240, a protective film transfer device 250, a protective film handling robot 260, and a protective film visual positioning device 270;

[0072] The first protective film pulling device 220 is arranged between the protective film roll unwinding device 210 and the protective film cutting device 230, and is used to pull the protective film released by the protective film roll unwinding device to the protective film cutting device 230. The second protective film pulling device 240 is arranged on one side of the protective film cutting device 230, and is used to clamp the protective film pulled out by the first protective film pulling device 220 and pull it to the length to be cut. The protective film cutting device 230 is used to cut the protective film. The protective film transfer device 250 is arranged on one side of the second protective film pulling device 240, and is used to receive the cut protective film. The protective film handling robot 260 is used to transfer the protective mold of the protective film transfer device 250 to the protective film visual positioning device 270 for positioning, and then transport it to the turntable film laminating platform 300 after positioning.

[0073] The first protective film pulling device 220, the protective film cutting device 230, and the second protective film pulling device 240 work in relay mode: the first pulling device pulls the film from the roll to the cutting position, the second pulling device clamps the film and pulls it to the set length, and after the cutting device cuts the film, the first pulling device can pull the next section of film. This significantly improves the overall efficiency of protective film loading and the production line cycle time.

[0074] The protective film roll unwinding device 210 includes a first unwinding device 211 and a second unwinding device 212, which are arranged vertically opposite each other. This allows for "zero-downtime switching" of protective film rolls, ensuring continuous production. When the film roll in the first unwinding device 211 is about to run out, the second unwinding device 212 can be pre-loaded with a new roll and pre-splicing the film head. When the film roll in the first unwinding device 211 is exhausted, the second unwinding device 212 can quickly switch to supplying the film. This switching process does not require long-term interruption of the production line, and the first unwinding device 211 can be replaced with a new roll during production breaks.

[0075] The first unwinding device 211 includes a first active rotary unwinding component 2111, at least one group of first driven guide rollers 2112 and a first tensioning component 2113. The first active rotary unwinding component 2111 is used to install the protective film of the roll material and drive it to perform a rotary unwinding movement. The first driven guide roller 2112 is arranged on one side of the first active rotary unwinding component 2111, and is used to guide the released protective film to enter the first protective film pulling device 220. The first tensioning component 2113 is arranged on one side of the first driven guide roller 2112, and is used to tension the protective film.

[0076] like Figure 3 As shown, six groups of first driven guide rollers 2112 are provided.

[0077] The first active rotary unwinding assembly 2111 provides an active, controllable power source, ensuring that the unwinding speed precisely matches the subsequent material drawing requirements (avoiding film loosening or deformation caused by passive unwinding). The first driven guide roller 2112 precisely guides the film path, preventing the film strip from straying, twisting, or scratching, ensuring it enters the first protective film drawing device 220 smoothly and vertically. The first tensioning assembly 2113 maintains stable film tension in real time, eliminating tension fluctuations caused by unwinding inertia, speed changes, or mechanical vibration, and preventing film loosening, wrinkling, or excessive stretching and deformation.

[0078] The first active rotary unwinding assembly 2111 includes a first active unwinding roller 2111a and a first active driving device 2111b. The first active unwinding roller 2111a is installed on the first active driving device 2111b and is used to install a protective mold for the coiled material. The first active driving device 2111b is used to drive the first active unwinding roller 2111a to perform a rotary unwinding motion.

[0079] The first tensioning assembly 2113 includes a first tensioning roller 2113a and a first tensioning drive device 2113b. The first tensioning roller 2113a is installed on the first tensioning drive device 2113b. The first tensioning drive device 2113b is used to drive the first tensioning roller 2113a to perform lifting movements to adjust the tension of the protective film during transportation.

[0080] The first protective film pulling device 220 includes a first upper pressure plate 221, a first lower pressure plate 222, a pressure plate lifting drive device 223 and a pressure plate transverse movement device 224. The first upper pressure plate 221 is installed on the pressure plate lifting drive device 223, the pressure plate lifting drive device 223 is installed on the pressure plate transverse movement device 224, the first lower pressure plate 222 is arranged opposite to the first upper pressure plate 221 up and down, and is installed on the pressure plate transverse movement device 224, the pressure plate lifting drive device 223 is used to drive the first upper pressure plate 221 to approach the first lower pressure plate 222 to clamp the protective film, and the pressure plate transverse movement device 224 is used to drive the first upper pressure plate 221 and the first lower pressure plate 222 to clamp the protective film and then move to the second protective film pulling device 240.

[0081] The first unwinding device 211 and the second unwinding device 212 have the same structure, and their details will not be repeated here.

[0082] like Figure 4 The structural schematic diagram of the protective film cutting device is shown.

[0083] The protective film cutting device 230 includes a lower cutting knife 231, a cutting knife driving device 232 and an upper cutting knife 233. The lower cutting knife 231 and the upper cutting knife 233 are arranged downwardly opposite to each other. The cutting knife driving device 232 is used to drive the lower cutting knife 231 to perform lifting and cutting movements.

[0084] The lower cutting blade 231 includes a guide portion 231a and a blade portion 231b. The guide portion 231a extends upward from both ends of the blade portion 231b. After the guide portion 231a fixes the film, the blade portion 231b rises along the path defined by the guide structure to complete the cutting, eliminating the film displacement at the moment of cutting.

[0085] The second protective film pulling device 240 includes a clamping air claw 241 and an air claw transverse movement device 242. The clamping air claw 241 is installed on the air claw transverse movement device 242. After the clamping air claw 241 clamps the protective film, the air claw transverse movement device 242 drives the clamping air claw 241 to move the protective mold to the cutting length.

[0086] The protective film transfer device 250 includes a protective film transfer platform 251 and a platform lifting drive device 252. The protective film transfer platform 251 is installed on the platform lifting drive device 252. The platform lifting drive device 252 drives the protective film transfer platform 251 to drive the protective film to perform lifting movements.

[0087] like Figure 5 The turntable film-laminating platform 300 is shown; the rear side of the turntable film-laminating platform 300 is the second transport robot 150, and the second transport robot 150 is used to transfer the battery cells after mechanical positioning to the protective film of the turntable film-laminating platform 300. The second transport robot 150 can also be used to transport the battery cells after film laminating to the protective film rolling device 500 on the upper surface of the battery cells.

[0088] like Figure 6 As shown, in one embodiment, the turntable film laminating platform 300 includes a turntable device 310, a cell adsorption platform 320, a first lifting drive module 330, and a protective film adsorption platform 340. The cell adsorption platform 320 is mounted on the first lifting drive module 330, which is mounted on the turntable device 310 to drive the cell adsorption platform 320 to move up and down. The protective film adsorption platform 340 is disposed on the turntable device 310 and is located on one side of the cell adsorption platform 320 to support the protective film. The protective film adsorption platform 340 can independently support the film material and maintain its flatness to prevent the cell lifting movement from interfering with the film surface state.

[0089] like Figure 7 As shown, the protective film rolling device 400 for the lower surface of the battery cell has a turntable film-laminating platform 300 on its front side for carrying the protective film and the battery cell.

[0090] like Figure 8As shown, in one embodiment, the battery cell bottom surface protective film rolling device 400 includes a first protective film pressing roller assembly 410 and a first XYZ drive module 420, the first protective film pressing roller assembly 410 is installed on the first XYZ drive module 420, and the first XYZ drive module 420 is used to drive the first protective film pressing roller assembly 410 to move along the X, Y and Z axis directions.

[0091] Combine Figure 7 and Figure 8 The specific working mode of the battery cell bottom surface protective film rolling device 400 is described in detail.

[0092] The second handling robot 150 transports and positions the battery cell above the already placed protective film. The protective film, with the adhesive layer facing upward, places the battery cell at a certain height above the protective film, but not yet touching it. The second handling robot 150 (or its connected mechanism) lowers the battery cell, allowing the bottom surface of the battery cell to lightly contact the adhesive layer of the protective film, achieving a preliminary bond.

[0093] As (or immediately after) the battery cell completes its initial lowering and lamination, the first XYZ drive module 420 begins operating, driving the first protective film pressing roller assembly 410 to rise. The first protective film pressing roller 411 (pressing roller) in the pressing roller assembly is precisely raised to rest against the portion of the protective film that has been initially applied to the lower surface of the battery cell. The pressing roller is now positioned below the battery cell, firmly against the protective film.

[0094] The first lift drive module 330 of the cell adsorption module begins operating, driving the entire cell adsorption platform 320 downward. Because the first protective mold roller 411 is already against the protective film on the lower surface of the cell, the lowering of the cell platform allows the first protective mold roller 411 to move across the lower surface of the cell, achieving a rolling motion. Under pressure, the roller compresses the adhesive layer between the lower surface of the cell and the protective film as it moves.

[0095] The first protective film pressing roller assembly 410 includes a first protective embossing roller 411 and a first embossing roller mounting seat 412 . The first protective embossing roller 411 is mounted on the first embossing roller mounting seat 412 and can rotate on the first embossing roller mounting seat 412 .

[0096] The first XYZ driving module 420 includes a first Z-axis module 421 , a first Y-axis module 422 and a first X-axis module 423 . The first Z-axis module 421 is mounted on the first Y-axis module 422 , and the first Y-axis module 422 is mounted on the first X-axis module 423 .

[0097] like Figure 9 As shown, a cell top surface protective film rolling device 500.

[0098] In one embodiment, the protective film rolling device 500 for the upper surface of the battery cell includes a clamping roller assembly 510, a second XYZ drive module 520 and a protective film rolling platform device 530. The clamping roller assembly 510 is installed on the second XYZ drive module 520, and the protective film rolling platform device 530 is arranged on the front side of the clamping roller assembly 510. The protective film rolling platform is used to carry the protective film and the battery cell. The clamping roller assembly 510 clamps the protective film and rolls it on the upper surface of the battery cell under the drive of the second XYZ drive module 520.

[0099] like Figure 10 As shown, the clamping roller assembly 510 includes an upper clamping roller 511, a lower clamping roller 512 and a clamping roller lifting drive module 513. The upper clamping roller 511 is installed on the clamping roller lifting drive module 513, and the lower clamping roller 512 is arranged opposite to the upper clamping roller 511 in the upper and lower directions. The clamping roller lifting drive module 513 is used to drive the upper clamping roller 511 to move closer to or away from the lower clamping roller 512.

[0100] like Figure 9 As shown, the second XYZ driving module 520 includes a second Z-axis module 521 , a second Y-axis module 522 and a second X-axis module 523 . The second Z-axis module 521 is mounted on the second Y-axis module 522 , and the second Y-axis module 522 is mounted on the second X-axis module 523 .

[0101] The protective film rolling platform device 530 includes a battery cell placement vacuum adsorption platform 531 and a protective film placement vacuum adsorption platform 532 .

[0102] Combine Figure 9 The specific working method of the battery cell upper surface protective film rolling device 500 is described in detail.

[0103] After rolling the lower surface, the turntable transfers the battery cell to the cell top surface protective film rolling device 500; the pinch roller assembly 510 (upper and lower pinch rollers 512) moves under the drive of the second XYZ drive module 520. The lower pinch roller 512 is located on the bottom surface of the protective film. The upper pinch roller 511 is lowered by the pinch roller lifting drive module 513 to cooperate with the lower pinch roller 512 to clamp the protective film on the side closest to the battery cell. After the pinch roller assembly 510 clamps the protective film, it is folded upward under the coordinated control of the XYZ module. Subsequently, the pinch roller assembly 510 (usually the lower pinch roller 512 is the active roller) rolls along the top surface of the battery cell, tightly fitting the top surface protective film to the battery cell and pressing the edges.

[0104] like Figure 11 and Figure 12 As shown, the protective film detection mechanism 600;

[0105] like Figure 11As shown, in one embodiment, the protective film detection mechanism 600 includes a battery cell upper surface protective film detection device 610 and a battery cell lower surface protective film detection device 620 .

[0106] like Figure 12 As shown, the battery cell lower surface protective film detection device 620 includes a second battery cell moving platform 621 and a battery cell lower surface detection CCD module 622. The second battery cell moving platform 621 is used to absorb the battery cell from the battery cell upper surface protective film rolling device to the battery cell upper surface protective film detection device for detection, and then continue to move the battery cell to the top of the battery cell lower surface detection CCD module after detection. The battery cell lower surface detection CCD module 622 is used to detect whether the protective film attached to the lower surface of the battery cell is defective.

[0107] The battery cell upper surface protective film detection device 610 includes a first battery cell moving platform 611 and a battery cell upper surface detection CCD module 612. The second battery cell moving platform 621 places the battery cell on the first battery cell moving platform 611. The first battery cell moving platform 611 is used to place and drive the battery cell to the battery cell upper surface detection CCD module 612. The battery cell upper surface detection CCD module 612 is used to detect whether the protective film on the battery cell upper surface is defective.

[0108] like Figure 13 As shown, the battery cell unloading mechanism 700

[0109] In one embodiment, the battery cell unloading mechanism 700 includes an unloading robot 710, an empty material frame feeding pull belt 720, an empty material frame transfer device 730 and a material frame discharging pull belt 740. The empty material frame feeding pull belt 720 is connected to the material frame discharging pull belt 740 through the empty material frame transfer device 730. The empty material frame feeding pull belt 720 transports the material frame to the empty material frame transfer device 730. The empty material frame transfer device 730 transfers the material frame to the material frame discharging pull belt 740. The unloading robot 710 places the battery cell into the material frame, and the material frame discharging pull belt 740 unloads the full material frame.

[0110] The working principle of the high-precision film cutting and laminating equipment is:

[0111] The protective film roll (usually has two layers, such as the first and second unwinding devices 212) is released through an active unwinding assembly (including a tensioning mechanism to ensure stable tension); the first protective film pulling device 220 clamps the film material and pulls it to the protective film cutting device 230 area. The second protective film pulling device 240 (clamping air claw 241) clamps the film head and cooperates with the first pulling device to pull the film material to a preset precise cutting length; the protective film cutting device 230 (upper and lower cutting knives 231) is activated to accurately cut the film material according to the set length; the cut single piece of protective film is moved to the protective film transfer platform 251. The protective film handling robot 260 grabs it and places it on the protective film visual positioning device 270 for precise positioning. After positioning is completed, the robot then accurately places the protective film on the protective film adsorption platform 340 of the turntable film laminating platform 300 (fixed by vacuum adsorption).

[0112] The battery cells are transported to the rear end of the mechanism via a pull belt. The first handling robot 120 grabs the battery cells and places them on the visual positioning device for preliminary position and angle identification and adjustment. The first handling robot 120 then transfers the visually positioned cells to the mechanical positioning device 140 for precise physical positioning and securing. If needed, a buffer device can temporarily store the positioned cells to ensure process flow. The second handling robot 150 then grabs the precisely positioned cells.

[0113] The second handling robot 150 presses the positioned battery cell onto the protective film placed on the protective film adsorption platform 340 of the turntable film laminating platform 300. At this time, the protective film is located on the lower surface of the battery cell; the battery cell adsorption platform 320 of the turntable film laminating platform 300 is equipped with a vacuum suction cup.

[0114] The turntable device 310 rotates the station carrying the battery cell with the lower protective film attached to the station of the protective film rolling device 400 on the lower surface of the battery cell; the first XYZ drive module 420 drives the first protective film pressing roller assembly 410 (pressing roller) to move, accurately rolling along the lower surface of the battery cell to eliminate bubbles and ensure that the protective film is tightly attached to the lower surface of the battery cell.

[0115] After rolling the lower surface, the turntable transfers the battery cell to the cell top surface protective film rolling device 500; the pinch roller assembly 510 (upper and lower pinch rollers 512) moves under the drive of the second XYZ drive module 520. The lower pinch roller 512 is located on the bottom surface of the protective film. The upper pinch roller 511 is lowered by the pinch roller lifting drive module 513 to cooperate with the lower pinch roller 512 to clamp the protective film on the side closest to the battery cell. After the pinch roller assembly 510 clamps the protective film, it is folded upward under the coordinated control of the XYZ module. Subsequently, the pinch roller assembly 510 (usually the lower pinch roller 512 is the active roller) rolls along the top surface of the battery cell, tightly fitting the top surface protective film to the battery cell and pressing the edges.

[0116] The battery cells with double-sided protective film are sent to the protective film detection mechanism 600 by a turntable or subsequent transport mechanism; the battery cell upper surface protective film detection device 610 first performs defect detection on the upper surface of the battery cell; then the second battery cell moving platform 621 sends the battery cell to the bottom of the battery cell lower surface detection CCD module 622 to perform appearance defect detection on the lower surface protective film (such as bubbles, wrinkles, dirt, scratches, etc.).

[0117] According to the test results (OK / NG), the battery cell unloading mechanism 700 performs sorting; the unloading robot 710 grabs the battery cells with film attached; the empty material frame is fed in by the empty material frame feeding belt 720, and is transferred to the designated unloading position by the empty material frame transfer device 730; the unloading robot 710 places the OK products into the OK material frame and the NG products into the NG material frame; the full material frame is transported away by the material frame discharging belt 740.

[0118] The embodiments described above are only preferred implementation modes of the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and replacements without departing from the technical principles of the present application. These improvements and replacements should also be regarded as the scope of protection of the present application.

Claims

1. A high-precision film cutting and laminating integrated device, characterized by: It includes a battery cell loading and positioning mechanism, a protective film loading mechanism, a turntable film laminating platform, a battery cell bottom surface protective film rolling device, a battery cell top surface protective film rolling device, a protective film detection mechanism and a battery cell unloading mechanism; The protective film feeding mechanism is set on one side of the turntable film laminating platform, and is used to cut the protective film and transport it to the turntable film laminating platform. The battery cell loading and positioning mechanism is arranged on one side of the turntable film laminating platform, and is used to transport the battery cells to and press them onto the protective film of the turntable film laminating platform; The turntable film laminating platform is arranged on one side of the battery cell lower surface protective film rolling device, and is used to transport the protective film and the battery cell to the battery cell lower surface protective film rolling device; The device for rolling the protective film on the lower surface of the battery cell is used to roll the protective film on the lower surface of the battery cell; The battery cell upper surface protective film rolling device is arranged on one side of the battery cell lower surface protective film rolling device, and is used to fold the protective film upwards and then roll it onto the upper surface of the battery cell; The protective film detection mechanism is arranged on one side of the battery cell unloading mechanism and is used to detect film defects of the battery cells; The battery cell unloading mechanism is used to sort and unload the battery cells after film application.

2. The high-precision film cutting and laminating integrated device according to claim 1, characterized in that: The battery cell loading and positioning mechanism includes a pull belt, a first handling robot, a visual positioning device, a mechanical positioning device, and a second handling robot; The first transport robot is arranged at the tail end of the pull belt, and is used to transfer the battery cells on the pull belt to the visual positioning device for visual positioning. The mechanical positioning device is arranged on one side of the visual positioning device. The first transport robot transports the battery cells after visual positioning to the mechanical positioning device for mechanical positioning. The second transport robot is used to transfer the battery cells after mechanical positioning to the protective film of the turntable film laminating platform.

3. The high-precision film cutting and laminating integrated device according to claim 1, characterized in that: The protective film feeding mechanism includes a protective film roll unwinding device, a first protective film pulling device, a protective film cutting device, a second protective film pulling device, a protective film transfer device, a protective film handling robot and a protective film visual positioning device; The first protective film pulling device is arranged between the protective film roll unwinding device and the protective film cutting device, and is used to pull the protective film released by the protective film roll unwinding device to the protective film cutting device. The second protective film pulling device is arranged on one side of the protective film cutting device, and is used to clamp the protective film pulled out by the first protective film pulling device and pull it to the length to be cut. The protective film cutting device is used to cut the protective film. The protective film transfer device is arranged on one side of the second protective film pulling device to receive the cut protective film. The protective film handling robot is used to transfer the protective mold of the protective film transfer device to the protective film visual positioning device for positioning, and then transport it to the turntable film laminating platform after positioning.

4. The high-precision film cutting and laminating integrated device according to claim 3, characterized in that: The protective film roll unwinding device includes a first unwinding device and a second unwinding device, and the first unwinding device and the second unwinding device are arranged opposite to each other up and down.

5. The high-precision film cutting and laminating integrated device according to claim 4, characterized in that: The first unwinding device includes a first active rotary unwinding component, at least one group of first driven guide rollers and a first tensioning component. The first active rotary unwinding component is used to install a protective film on the roll material and drive it to perform a rotary unwinding movement. The first driven guide roller is arranged on one side of the first active rotary unwinding component to guide the released protective film so that it enters the first protective film pulling device. The first tensioning component is arranged on one side of the first driven guide roller to tension the protective film.

6. The high-precision film cutting and laminating integrated device according to any one of claims 1 to 5, characterized in that: The turntable film-sticking platform includes a turntable device, a battery cell adsorption platform, a first lifting drive module and a protective film adsorption platform. The battery cell adsorption platform is installed on the first lifting drive module. The first lifting drive module is installed on the turntable device and is used to drive the battery cell adsorption platform to perform lifting movements. The protective film adsorption platform is arranged on the turntable device and is located on one side of the battery cell adsorption platform for supporting the protective film.

7. The high-precision film cutting and laminating integrated device according to any one of claims 1 to 5, characterized in that: The battery cell lower surface protective film rolling device includes a first protective film pressing roller assembly and a first XYZ drive module. The first protective film pressing roller assembly is installed on the first XYZ drive module. The first XYZ drive module is used to drive the first protective film pressing roller assembly to move along the X, Y and Z axis directions.

8. The high-precision film cutting and laminating integrated device according to any one of claims 1 to 5, characterized in that: The protective film rolling device for the upper surface of the battery cell includes a clamping roller assembly, a second XYZ drive module and a protective film rolling platform device. The clamping roller assembly is installed on the second XYZ drive module, and the protective film rolling platform device is arranged on the front side of the clamping roller assembly. The protective film rolling platform is used to carry the protective film and the battery cell. The clamping roller assembly clamps the protective film and rolls it on the upper surface of the battery cell under the drive of the second XYZ drive module.

9. The high-precision film cutting and laminating integrated device according to any one of claim 8, characterized in that: The pinch roller assembly includes an upper pinch roller, a lower pinch roller and a pinch roller lifting drive module. The upper pinch roller is installed on the pinch roller lifting drive module. The lower pinch roller and the upper pinch roller are arranged opposite to each other up and down. The pinch roller lifting drive module is used to drive the upper pinch roller to move closer to or away from the lower pinch roller.

10. The high-precision film cutting and laminating integrated device according to any one of claims 1 to 5, characterized in that: The battery cell unloading mechanism includes an unloading robot, an empty material frame feeding pull belt, an empty material frame transfer device and a material frame discharging pull belt. The empty material frame feeding pull belt is connected to the material frame discharging pull belt through the empty material frame transfer device. The empty material frame feeding pull belt transports the material frame to the empty material frame transfer device. The empty material frame transfer device transfers the material frame to the material frame discharging pull belt. The unloading robot places the battery cell into the material frame, and the material frame discharging pull belt unloads the full material frame.

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