A multi-layer current collector welding device with intelligent regulation function

Abstract

The application discloses a kind of multi-layer current collector welding devices with intelligent control function, it is related to multi-layer current collector welding technical field, the multi-layer current collector welding device includes shell, first support frame, base film unwinding device, second support frame, first metal conductive film unwinding device, second metal conductive film unwinding device, laminating device, stretching device, ultrasonic wave roll welding device, winding device and mounting plate, the base film unwinding device, first metal conductive film unwinding device and second metal conductive film unwinding device are unwound to laminating device with base film and two metal conductive films, form composite roll film, the stretching device is stretched to composite roll film, the ultrasonic wave roll welding device is welded to composite roll film, by the way of combination of rolling and vibration, appropriate pressure is applied to welding site, the welding part of multi-layer current collector is flattened, the flatness and overall uniformity of welding area are improved, and the winding device is wound to composite roll film.

Description

Technical Field

[0001] This invention relates to the field of multilayer current collector welding technology, specifically a multilayer current collector welding device with intelligent control function. Background Technology

[0002] Multilayer current collectors are functional conductive materials composed of different materials, typically a metal substrate and a functional coating. They are widely used in electrochemical energy storage devices, serving as a crucial bridge for electron transport between electrode materials and electrolytes. Multilayer current collector bonding is an advanced welding technology primarily used to connect multilayer current collectors of different materials and thicknesses to achieve good electrical connections. During the welding process, material thickness, melting point, and welding power are key factors affecting weld quality.

[0003] Existing technologies have several drawbacks: During winding, existing multilayer current collectors are prone to wrinkling or even tearing of the film due to the greater thickness of the welded area compared to other parts, affecting product quality; the diameter of the roll increases continuously during winding, making it difficult to adjust the pressure of the pressure rollers on the roll, with excessive pressure causing roll deformation and insufficient pressure causing roll slack; during welding, differences in material thickness and melting point can easily lead to excessive or insufficient welding power, affecting welding quality and reducing the performance of the multilayer current collector. Summary of the Invention

[0004] The purpose of this invention is to provide a multilayer current collector welding device with intelligent control function to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The multilayer current collector welding device includes a housing, and a first support frame, a second support frame, and a mounting plate are sequentially installed inside the housing along the feeding direction. A base film unwinding device is installed on one side of the first support frame, a first metal conductive film unwinding device is installed on the inner side of the second support frame, and a second metal conductive film unwinding device is installed on the outer side of the second support frame. The second metal conductive film unwinding device is installed above the first metal conductive film unwinding device. A bonding device, a stretching device, an ultrasonic roll welding device, and a winding device are sequentially installed on one side of the mounting plate along the feeding direction. During operation, the base film unwinding device, the first metal conductive film unwinding device, and the second metal conductive film unwinding device unwind the base film and the two metal conductive films into the laminating device. The laminating device laminates the three films to form a composite roll film. The composite roll film enters the stretching device, which stretches the composite roll film to ensure its uniformity. After stretching, the composite roll film enters the ultrasonic roll welding device, which welds the composite roll film. By combining rolling and vibration, appropriate pressure is applied to the welded part to flatten the welded part of the multilayer current collector, making its surface flat and free of protrusions or depressions. After welding, the composite roll film enters the winding device, which winds the composite roll film.

[0006] The base film unwinding device includes a correction base mounted on a first support frame. A correction slider is slidably connected to the correction base. A drive device is mounted on one side of the correction slider, and a connecting plate is mounted on one side of the correction slider. A base plate is mounted on the connecting plate, and an arc-shaped groove is formed on the base plate. A first motor is mounted on one side of the base plate, and an unwinding roller is mounted through the output shaft of the first motor passing through the base plate. An upper guide roller and a lower guide roller are rotatably connected to one side of the base plate. A support seat is mounted on one side of the connecting plate, and a second motor is mounted on one side of the support seat. A rotating plate is mounted through the output shaft of the second motor passing through the support seat. A tension roller is rotatably connected to one side of the rotating plate and slides in the arc-shaped groove. The tension roller is installed between two upper guide rollers. The first and second metal conductive film unwinding devices have the same structure as the base film unwinding device. The drive device, the first motor, and the second motor are connected to a control system. The control system starts the first motor, whose output shaft drives the unwinding roller to rotate. The base film on the unwinding roller is wound around the tensioning roller via the upper guide roller, then around another upper guide roller and onto the lower guide roller before entering the laminating device. When the base film loosens during unwinding, the control system starts the second motor, whose output shaft drives the rotating plate to rotate. The rotating plate drives the tensioning roller to slide in the arc groove until the base film is tensioned. When the grating sensor detects film offset, the control system starts the drive device, which drives the correction slider to slide on the correction base until the film is in the correct position. The metal conductive films on the first and second metal conductive film unwinding devices are unwound into the laminating device in the same manner as described above.

[0007] The bonding device includes a housing mounted on one side of a mounting plate. A grating sensor is installed on one side of the housing. A bonding chamber is formed inside the housing. A first conveyor roller, a second conveyor roller, and a bonding roller are sequentially rotatably connected within the bonding chamber along the feeding direction. The base film and the conductive metal film enter the bonding chamber and are conveyed from the first conveyor roller to the second conveyor roller. After the three films are laminated, they are conveyed between the bonding rollers to the stretching device.

[0008] The stretching device includes a third motor. A first rotating shaft is mounted on the output shaft of the third motor. The first rotating shaft rotates on one side of a mounting plate. An intermediate gear is mounted on the first rotating shaft. A first gear set and a second gear set are mounted on one side of the mounting plate. The intermediate gear meshes with the first and second gear sets. A first stretching roller is mounted on one side of the first gear set, and a second stretching roller is mounted on one side of the second gear set. The third motor is connected to a control system. The control system starts the third motor, which drives the intermediate gear to rotate. The intermediate gear drives the first and second gear sets to rotate. The first gear set drives the first stretching roller to rotate, and the second gear set drives the second stretching roller to rotate. The first and second stretching rollers rotate in opposite directions, stretching the composite roll film to ensure its uniformity.

[0009] The ultrasonic welding device includes a lower plate and an upper plate. The lower plate is mounted on one side of a mounting plate, and a conveyor wheel is rotatably connected to one side of the lower plate. The upper plate is mounted on one side of the mounting plate, and a fourth motor is mounted on one side of the upper plate. The output shaft of the fourth motor passes through the upper plate and is fitted with a lead screw. A sliding plate is mounted on the lead screw, and an ultrasonic welding machine and a flattening device are mounted on one side of the sliding plate. The ultrasonic welding machine is equipped with a temperature sensor, a pressure sensor, and a current sensor. The temperature sensor, pressure sensor, current sensor, and the fourth motor are connected to the control system. When the composite film roll is located on the conveyor wheel, the control system starts the fourth motor, which drives the lead screw to rotate. The lead screw drives the sliding plate to slide closer to the lower plate, and the sliding plate moves the ultrasonic welding machine and the flattening device. When the ultrasonic welding machine contacts the composite film roll, it welds the composite film roll. The flattening device flattens the welded composite film roll.

[0010] The flattening device includes a protective shell mounted on one side of a sliding plate. A vertical plate is installed inside the protective shell, and a fifth motor is mounted on one side of the vertical plate. A through slot is formed on the vertical plate, and the output shaft of the fifth motor passes through the vertical plate to mount a rotating rod. A connecting rod is rotatably connected to one side of the rotating rod, and a second rotating shaft is rotatably connected to one side of the connecting rod. A slider is mounted on the outer wall of the second rotating shaft, and the slider slides within the through slot. A first pinion is mounted on one end of the second rotating shaft, and a first rack is mounted on one side of the vertical plate. The first rack and the first pinion mesh. A flattening wheel is mounted on the other end of the second rotating shaft. The fifth motor is connected to a control system. The control system starts the fifth motor, which drives the rotating rod to rotate. The rotating rod drives the connecting rod to rotate, causing the slider to slide within the through slot. The slider moves the second rotating shaft, which in turn drives the first pinion to rotate on the first rack. The first pinion drives the second rotating shaft to rotate, and the second rotating shaft drives the flattening wheel to rotate, thus rolling and vibrating the welded composite film roll.

[0011] The winding device includes a fixed plate mounted on one side of a mounting plate. The mounting plate has a sliding groove and a rotating groove. A winding slider is installed in the sliding groove. An arc-shaped block is connected to one side of the winding slider. A guide rod is connected to one end of the arc-shaped block and slides within the fixed plate. A spring is installed on one side of the arc-shaped block, and the other end of the spring is mounted on one side of the fixed plate. The spring is sleeved on the guide rod. A connecting block is connected to the other side of the winding slider. A second rack is installed at one end of the connecting block. A sixth motor is mounted on one side of the mounting plate. The output shaft of the sixth motor passes through the mounting plate and is used to mount a winding roller. A third rotating shaft is mounted on one side of the mounting plate. A second pinion is mounted on the third rotating shaft. A groove is formed on the second pinion, and a pressure roller is rotatably connected within the groove. The pressure roller slides in the rotating groove. The sixth motor is connected to a control system. When the composite film roll is wound onto the take-up roller, the control system starts the sixth motor, which drives the take-up roller to rotate. As the thickness of the roll increases, the arc-shaped block moves closer to the fixed plate, and the spring is compressed, which provides a certain pressure to the roll on the take-up roller. The arc-shaped block drives the take-up slider to slide in the sliding groove. The take-up slider drives the connecting block to move. The connecting block drives the second rack to move closer to the fixed plate. The second rack drives the second pinion to rotate. The second pinion drives the pressure roller to slide in the rotating groove, increasing the distance between the take-up roller and the pressure roller, and automatically adjusting the pressure of the pressure roller on the roll on the take-up roller.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. The flattening device of the present invention applies appropriate pressure to the welding part by combining rolling and vibration, flattening the welding part of the multilayer current collector so that its surface is flat and without protrusions or depressions, thereby effectively improving the flatness and overall uniformity of the welding area and avoiding wrinkles, folds or tears caused by uneven film during the subsequent winding process. 2. The winding device of the present invention can automatically adjust the position of the pressure roller according to the dynamic change of the thickness of the roll during winding, and maintain a certain distance from the surface of the roll. The roll is always subjected to appropriate pressure during the winding process, avoiding the quality problems caused by excessive or insufficient pressure in traditional winding equipment. This not only improves winding efficiency and product quality, but also reduces material loss and defect rate in the production process. 3. During welding, the ultrasonic roller welding device of the present invention can monitor key parameters such as temperature, pressure and current in real time. These parameters will be transmitted to the control system, which will analyze and process the parameters in real time and intelligently adjust the welding power to achieve the best welding effect. Attached Figure Description

[0013] Figure 1This is a perspective view of the multilayer current collector welding device of the present invention; Figure 2 This is a perspective view of the base film unwinding device of the present invention; Figure 3 This is a perspective view of the base film unwinding device of the present invention from another angle; Figure 4 This is a cross-sectional view of the bonding device of the present invention; Figure 5 This is a perspective view of the stretching device of the present invention; Figure 6 This is a perspective view of the ultrasonic roll welding apparatus of the present invention; Figure 7 This is an exploded view of the flattening device of the present invention; Figure 8 This is a perspective view of the winding device of the present invention; Figure 9 This is a perspective view of the winding device of the present invention from another angle.

[0014] In the diagram: 1. Outer shell; 2. First support frame; 3. Base film unwinding device; 301. Correction base; 302. Correction slider; 303. Connecting plate; 304. Base plate; 305. Unwinding roller; 306. Upper guide roller; 307. Tensioning roller; 308. Lower guide roller; 309. Support seat; 310. Second motor; 311. Rotating plate; 312. First motor; 4. Second support frame; 5. First metal conductive film unwinding device; 6. Second metal conductive film unwinding device; 7. Laminating device; 701. Outer shell; 702. Grating sensor; 703. First conveyor roller; 704. Laminating chamber; 705. Laminating roller; 706. Second conveyor roller; 8. Stretching device; 801. Third motor; 802. First rotating shaft; 803. Intermediate gear; 804. First gear set; 805. First stretching roller; 806. Second gear set; 807, Second stretching roller; 9, Ultrasonic welding device; 901, Lower plate; 902, Conveyor wheel; 903, Upper plate; 904, Fourth motor; 905, Lead screw; 906, Slide plate; 907, Ultrasonic welding machine; 908, Flattening device; 9081, Protective shell; 9082, Vertical plate; 9083, Fifth motor; 9084, Rotating rod; 9085, Connecting rod; 9086. 9087. Slider; 9088. First rack; 9089. First pinion; 9080. Flattening roller; 10. Winding device; 1001. Fixing plate; 1002. Arc block; 1003. Spring; 1004. Connecting block; 1005. Second rack; 1006. Sixth motor; 1007. Winding roller; 1008. Second pinion; 1009. Pressing roller; 1010. Rotating groove; 11. Mounting plate. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example: Figures 1-9 As shown, the present invention provides a technical solution in which a multilayer current collector welding device includes a housing 1. Inside the housing 1, a first support frame 2, a second support frame 4, and a mounting plate 11 are installed sequentially along the feeding direction. A base film unwinding device 3 is installed on one side of the first support frame 2. A first metal conductive film unwinding device 5 is installed on the inner side of the second support frame 4. A second metal conductive film unwinding device 6 is installed on the outer side of the second support frame 4. The second metal conductive film unwinding device 6 is installed above the first metal conductive film unwinding device 5. A bonding device 7, a stretching device 8, an ultrasonic roll welding device 9, and a winding device 10 are installed sequentially along the feeding direction on one side of the mounting plate 11. During operation, the base film unwinding device 3, the first metal conductive film unwinding device 5, and the second metal conductive film unwinding device 6 unwind the base film and the two metal conductive films into the laminating device 7. The laminating device 7 laminates the three films to form a composite roll film. The composite roll film enters the stretching device 8, which stretches the composite roll film to ensure its uniformity. The stretched composite roll film then enters the ultrasonic roller welding device 9, which welds the composite roll film. By combining rolling and vibration, appropriate pressure is applied to the welding area to flatten the welded part of the multilayer current collector, making its surface flat and free of protrusions or depressions. The welded composite roll film then enters the winding device 10, which winds up the composite roll film.

[0017] The base film unwinding device 3 includes a correction base 301, which is mounted on a first support frame 2. A correction slider 302 is slidably connected to the correction base 301. A driving device is mounted on one side of the correction slider 302, and a connecting plate 303 is mounted on one side of the correction slider 302. A base plate 304 is mounted on the connecting plate 303. An arc-shaped groove is formed on the base plate 304. A first motor 312 is mounted on one side of the base plate 304. The output shaft of the first motor 312 passes through the base plate 304 and is mounted on an unwinding roller 305. An upper guide roller 306 and a lower guide roller 305 are rotatably connected to one side of the base plate 304. Roller 308, a support base 309 is installed on one side of the connecting plate 303, a second motor 310 is installed on one side of the support base 309, the output shaft of the second motor 310 passes through the support base 309 and a rotating plate 311 is installed, a tension roller 307 is rotatably connected to one side of the rotating plate 311, the tension roller 307 slides in the arc groove, the tension roller 307 is installed between two upper guide rollers 306, the first metal conductive film unwinding device 5 and the second metal conductive film unwinding device 6 have the same structure as the base film unwinding device 3, the drive device, the first motor 312 and the second motor 310 are connected to the control system.

[0018] The control system starts the first motor 312, and the output shaft of the first motor 312 drives the unwinding roller 305 to rotate. The base film on the unwinding roller 305 is wound around the tensioning roller 307 via the upper guide roller 306, and then wound around the lower guide roller 308 via another upper guide roller 306 and enters the laminating device 7. When the base film is unwound and becomes loose, the control system starts the second motor 310, and the output shaft of the second motor 310 drives the rotating plate 311 to rotate. The rotating plate 311 drives the tensioning roller 307 to slide in the arc groove until the base film is tensioned. When the grating sensor 702 senses the film offset, the control system starts the drive device, and the drive device drives the correction slider 302 to slide on the correction base 301 until the film is in the correct position. The metal conductive films on the first metal conductive film unwinding device 5 and the second metal conductive film unwinding device 6 are unwound into the laminating device 7 in the above steps.

[0019] The bonding device 7 includes a housing 701, which is mounted on one side of the mounting plate 11. A grating sensor 702 is mounted on one side of the housing 701. A bonding chamber 704 is formed inside the housing 701. A first conveyor roller 703, a second conveyor roller 706, and a bonding roller 705 are sequentially rotatably connected in the bonding chamber 704 along the feeding direction. The base film and the conductive metal film enter the bonding chamber 704 and are conveyed from the first conveyor roller 703 to the second conveyor roller 706. After the three films are laminated, they are conveyed from between the bonding rollers 705 to the stretching device 8.

[0020] The stretching device 8 includes a third motor 801. A first rotating shaft 802 is mounted on the output shaft of the third motor 801. The first rotating shaft 802 rotates on one side of the mounting plate 11. An intermediate gear 803 is mounted on the first rotating shaft 802. A first gear set 804 and a second gear set 806 are mounted on one side of the mounting plate 11. The intermediate gear 803 meshes with the first gear set 804 and the second gear set 806. A first stretching roller 805 is mounted on one side of the first gear set 804, and a second stretching roller 807 is mounted on one side of the second gear set 806. The third motor 801 is connected to the control system. The control system starts the third motor 801, which drives the intermediate gear 803 to rotate. The intermediate gear 803 drives the first gear set 804 and the second gear set 806 to rotate. The first gear set 804 drives the first stretching roller 805 to rotate, and the second gear set 806 drives the second stretching roller 807 to rotate. The first stretching roller 805 and the second stretching roller 807 rotate in opposite directions to stretch the composite roll film and ensure the uniformity of the composite roll film.

[0021] The ultrasonic welding device 9 includes a lower plate 901 and an upper plate 903. The lower plate 901 is mounted on one side of the mounting plate 11, and a transmission wheel 902 is rotatably connected to one side of the lower plate 901. The upper plate 903 is mounted on one side of the mounting plate 11, and a fourth motor 904 is mounted on one side of the upper plate 903. A lead screw 905 is mounted through the upper plate 903. A sliding plate 906 is mounted on the lead screw 905. An ultrasonic welding machine 907 and a flattening device 908 are mounted on one side of the sliding plate 906. A temperature sensor, a pressure sensor, and a current sensor are mounted on the ultrasonic welding machine 907. The temperature sensor, pressure sensor, current sensor, and the fourth motor 904 are connected to the control system. When the composite roll film is on the conveyor wheel 902, the control system controls the fourth motor 904 to start. The fourth motor 904 drives the lead screw 905 to rotate. The lead screw 905 drives the slide plate 906 to slide towards the lower plate 901. The slide plate 906 drives the ultrasonic welding machine 907 and the flattening device 908 to move. When the ultrasonic welding machine 907 contacts the composite roll film, it welds the composite roll film. The flattening device 908 flattens the welded composite roll film.

[0022] The flattening device 908 includes a protective shell 9081, which is installed on one side of the slide plate 906. A vertical plate 9082 is installed inside the protective shell 9081. A fifth motor 9083 is installed on one side of the vertical plate 9082. A through groove is provided on the vertical plate 9082. A rotating rod 9084 is installed through the vertical plate 9082. A connecting rod 9085 is rotatably connected to one side of the rotating rod 9084. A second rotating shaft is rotatably connected to one side of the connecting rod 9085. A slider 9086 is installed on the outer wall of the second rotating shaft. The slider 9086 slides in the through groove. A first pinion 9088 is installed at one end of the second rotating shaft. A first rack 9087 is installed on one side of the vertical plate 9082. The first rack 9087 and the first pinion 9088 mesh. A flattening wheel 9089 is installed at the other end of the second rotating shaft. The fifth motor 9083 is connected to the control system. The control system starts the fifth motor 9083, which drives the rotating rod 9084 to rotate. The rotating rod 9084 drives the connecting rod 9085 to rotate. The rotating rod 9084 drives the slider 9086 to slide in the through groove. The slider 9086 drives the second rotating shaft to move. The second rotating shaft drives the first pinion 9088 to rotate on the first rack 9087. The first pinion 9088 drives the second rotating shaft to rotate. The second rotating shaft drives the flattening wheel 9089 to rotate, rolling and vibrating the welded composite film.

[0023] The winding device 10 includes a fixed plate 1001, which is mounted on one side of a mounting plate 11. The mounting plate 11 has a sliding groove and a rotating groove 1010. A winding slider is installed in the sliding groove. An arc-shaped block 1002 is connected to one side of the winding slider. A guide rod is connected to one end of the arc-shaped block 1002, and the guide rod slides within the fixed plate 1001. A spring 1003 is mounted on one side of the arc-shaped block 1002, and the other end of the spring 1003 is mounted on one side of the fixed plate 1001. The spring 1003 is sleeved on the guide rod. The other end of the winding slider... A connecting block 1004 is connected to the side, and a second rack 1005 is installed at one end of the connecting block 1004. A sixth motor 1006 is installed on one side of the mounting plate 11. The output shaft of the sixth motor 1006 passes through the mounting plate 11 and is used to install a take-up roller 1007. A third rotating shaft is installed on one side of the mounting plate 11. A second pinion 1008 is installed on the third rotating shaft. A groove is provided on the second pinion 1008. A pressure roller 1009 is rotatably connected in the groove. The pressure roller 1009 slides in the rotating groove 1010. The sixth motor 1006 is connected to the control system.

[0024] When the composite film roll is wound onto the take-up roller 1007, the control system starts the sixth motor 1006. The sixth motor 1006 drives the take-up roller 1007 to rotate. As the thickness of the roll increases, it drives the arc block 1002 to move closer to the fixed plate 1001. The spring 1003 is compressed, which can provide a certain pressure to the roll on the take-up roller 1007. The arc block 1002 drives the take-up slider to slide in the sliding groove. The take-up slider drives the connecting block 1004 to move. The connecting block 1004 drives the second rack 1005 to move closer to the fixed plate 1001. The second rack 1005 drives the second pinion 1008 to rotate. The second pinion 1008 drives the pressure roller 1009 to slide in the rotating groove 1010, which increases the distance between the take-up roller 1007 and the pressure roller 1009, and automatically adjusts the pressure of the pressure roller 1009 on the roll on the take-up roller 1007.

[0025] Working principle of the invention: During operation, the control system starts the first motor 312, and the output shaft of the first motor 312 drives the unwinding roller 305 to rotate. The base film on the unwinding roller 305 is wound around the tensioning roller 307 via the upper guide roller 306, and then wound around the lower guide roller 308 via another upper guide roller 306 and enters the bonding chamber 704. When the base film is unwound and becomes loose, the control system starts the second motor 310, and the output shaft of the second motor 310 drives the rotating plate 311 to rotate. The rotating plate 311 drives the tensioning roller 307 to slide in the arc groove until the base film is tensioned. When the grating sensor 702 senses the film offset, the control system starts the drive device, and the drive device drives the correction slider 302 to slide on the correction base 301 until the film is in the correct position. The metal conductive films on the first metal conductive film unwinding device 5 and the second metal conductive film unwinding device 6 are unwound into the bonding chamber 704 in the above steps.

[0026] The base film and the conductive metal film enter the bonding chamber 704 and are conveyed from the first conveyor roller 703 to the second conveyor roller 706. After the three films are laminated, they are conveyed from between the bonding rollers 705 to the first stretching roller 805. The control system controls the third motor 801 to start. The third motor 801 drives the intermediate gear 803 to rotate. The intermediate gear 803 drives the first gear set 804 and the second gear set 806 to rotate. The first gear set 804 drives the first stretching roller 805 to rotate, and the second gear set 806 drives the second stretching roller 807 to rotate. The first stretching roller 805 and the second stretching roller 807 rotate in opposite directions to stretch the composite roll film and ensure the uniformity of the composite roll film.

[0027] When the composite roll film is on the conveyor wheel 902, the control system controls the fourth motor 904 to start. The fourth motor 904 drives the lead screw 905 to rotate. The lead screw 905 drives the slide plate 906 to slide towards the lower plate 901. The slide plate 906 drives the ultrasonic welding machine 907 and the flattening device 908 to move. When the ultrasonic welding machine 907 contacts the composite roll film, it welds the composite roll film.

[0028] The temperature, pressure, and current sensors on the 907 ultrasonic roller welding machine transmit parameters to the control system. The control system monitors key parameters such as temperature, pressure, and current in real time during the welding process. When the temperature during the welding process is lower than the preset melting temperature, the control system automatically increases the welding power to raise the welding temperature and ensure that the material can be fully melted to achieve a good welding effect. When the welding temperature is too high, which may cause the material to burn through or produce too many welding defects, the control system automatically reduces the welding power to prevent overheating. At the same time, the welding speed is adjusted according to the melting point and thickness of the material to achieve the best welding effect.

[0029] After welding is completed, the control system starts the fifth motor 9083, which drives the rotating rod 9084 to rotate. The rotating rod 9084 drives the connecting rod 9085 to rotate, which in turn drives the slider 9086 to slide in the through groove. The slider 9086 drives the second rotating shaft to move, which in turn drives the first pinion 9088 to rotate on the first rack 9087. The first pinion 9088 drives the second rotating shaft to rotate, which in turn drives the flattening wheel 9089 to rotate. This causes the welded composite roll film to roll and vibrate, applying appropriate pressure to the welded area and flattening the welded part of the multilayer current collector, making its surface flat and free of protrusions or depressions. This effectively improves the flatness and overall uniformity of the welded area, preventing wrinkles, creases, or tears caused by unevenness in the roll film during subsequent winding.

[0030] When the composite film roll is wound onto the take-up roller 1007, the control system starts the sixth motor 1006. The sixth motor 1006 drives the take-up roller 1007 to rotate. As the thickness of the roll increases, it drives the arc-shaped block 1002 to move closer to the fixed plate 1001. The spring 1003 is compressed, which can provide a certain pressure to the roll on the take-up roller 1007. The arc-shaped block 1002 drives the take-up slider to slide in the sliding groove. The take-up slider drives the connecting block 1004 to move. The connecting block 1004 drives the second rack 1005 to move closer to the fixed plate 1001. As the direction moves, the second rack 1005 drives the second pinion 1008 to rotate. The second pinion 1008 drives the pressure roller 1009 to slide in the rotating groove 1010, increasing the distance between the take-up roller 1007 and the pressure roller 1009. This automatically adjusts the pressure of the pressure roller 1009 on the roll of the take-up roller 1007, ensuring that the roll is always under appropriate pressure during the winding process. This avoids quality problems caused by excessive or insufficient pressure in traditional winding equipment, improving winding efficiency and product quality, and reducing material loss and defect rate during production.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-layer current collector welding device with intelligent control function, characterized in that: The multilayer current collector welding device includes a housing (1). Inside the housing (1), a first support frame (2), a second support frame (4), and a mounting plate (11) are installed sequentially along the feeding direction. A base film unwinding device (3) is installed on one side of the first support frame (2). A first metal conductive film unwinding device (5) is installed on the inner side of the second support frame (4). A second metal conductive film unwinding device (6) is installed on the outer side of the second support frame (4). The second metal conductive film unwinding device (6) is installed above the first metal conductive film unwinding device (5). A bonding device (7), a stretching device (8), an ultrasonic roll welding device (9), and a winding device (10) are installed sequentially along the feeding direction on one side of the mounting plate (11).

2. The multilayer current collector welding device with intelligent control function according to claim 1, characterized in that: The base film unwinding device (3) includes a correction base (301), which is mounted on a first support frame (2). A correction slider (302) is slidably connected to the correction base (301). A driving device is mounted on one side of the correction slider (302). A connecting plate (303) is mounted on one side of the correction slider (302). A base plate (304) is mounted on the connecting plate (303). An arc groove is provided on the base plate (304). A first motor (312) is mounted on one side of the base plate (304). An unwinding roller (305) is mounted through the output shaft of the first motor (312) through the base plate (304). An upper guide roller (306) is rotatably connected to one side of the base plate (304). The lower guide roller (308) has a support base (309) installed on one side of the connecting plate (303). A second motor (310) is installed on one side of the support base (309). The output shaft of the second motor (310) passes through the support base (309) and is mounted on a rotating plate (311). A tension roller (307) is rotatably connected to one side of the rotating plate (311). The tension roller (307) slides in the arc groove. The tension roller (307) is installed between two upper guide rollers (306). The first metal conductive film unwinding device (5) and the second metal conductive film unwinding device (6) have the same structure as the base film unwinding device (3). The driving device, the first motor (312), and the second motor (310) are connected to the control system.

3. The multilayer current collector welding device with intelligent control function according to claim 2, characterized in that: The bonding device (7) includes a housing (701), which is mounted on one side of the mounting plate (11). A grating sensor (702) is mounted on one side of the housing (701). A bonding chamber (704) is opened inside the housing (701). A first conveying roller (703), a second conveying roller (706), and a bonding roller (705) are rotatably connected in sequence along the feeding direction inside the bonding chamber (704).

4. The multilayer current collector welding device with intelligent control function according to claim 3, characterized in that: The stretching device (8) includes a third motor (801), on which a first rotating shaft (802) is mounted. The first rotating shaft (802) rotates on one side of the mounting plate (11). An intermediate gear (803) is mounted on the first rotating shaft (802). A first gear set (804) and a second gear set (806) are mounted on one side of the mounting plate (11). The intermediate gear (803) meshes with the first gear set (804) and the second gear set (806). A first stretching roller (805) is mounted on one side of the first gear set (804), and a second stretching roller (807) is mounted on one side of the second gear set (806). The third motor (801) is connected to the control system.

5. A multi-layer current collector welding device with intelligent control function according to claim 4, characterized in that: The ultrasonic welding device (9) includes a lower plate (901) and an upper plate (903). The lower plate (901) is installed on one side of the mounting plate (11). A transmission wheel (902) is rotatably connected to one side of the lower plate (901). The upper plate (903) is installed on one side of the mounting plate (11). A fourth motor (904) is installed on one side of the upper plate (903). A lead screw (905) is installed through the upper plate (903) of the output shaft of the fourth motor (904). A sliding plate (906) is installed on the lead screw (905). An ultrasonic welding machine (907) and a flattening device (908) are installed on one side of the sliding plate (906). A temperature sensor, a pressure sensor, and a current sensor are installed on the ultrasonic welding machine (907). The temperature sensor, pressure sensor, current sensor, and the fourth motor (904) are connected to the control system.

6. A multi-layer current collector welding device with intelligent control function according to claim 5, characterized in that: The flattening device (908) includes a protective shell (9081), which is installed on one side of a sliding plate (906). A through groove is provided on the sliding plate (906). A vertical plate (9082) is installed inside the protective shell (9081). A fifth motor (9083) is installed on one side of the vertical plate (9082). The output shaft of the fifth motor (9083) passes through the vertical plate (9082) and is equipped with a rotating rod (9084). A connecting rod (9085) is rotatably connected to one side of the rotating rod (9084). A second rotating shaft is rotatably connected to one side of the connecting rod (9085). A slider (9086) is installed on the outer wall of the second rotating shaft. The slider (9086) slides in the through groove. A first pinion (9088) is installed at one end of the second rotating shaft. A first rack (9087) is installed on one side of the vertical plate (9082). The first rack (9087) and the first pinion (9088) mesh. A flattening wheel (9089) is installed at the other end of the second rotating shaft. The fifth motor (9083) is connected to the control system.

7. A multi-layer current collector welding device with intelligent control function according to claim 6, characterized in that: The winding device (10) includes a fixed plate (1001), which is mounted on one side of a mounting plate (11). The mounting plate (11) has a sliding groove and a rotating groove (1010). A winding slider is installed in the sliding groove. An arc-shaped block (1002) is connected to one side of the winding slider. A guide rod is connected to one end of the arc-shaped block (1002), and the guide rod slides within the fixed plate (1001). A spring (1003) is installed on one side of the arc-shaped block (1002), and the other end of the spring (1003) is installed on one side of the fixed plate (1001). The spring (1003) is sleeved on the guide rod. The other end of the winding slider... A connecting block (1004) is connected to one side, and a second rack (1005) is installed at one end of the connecting block (1004). A sixth motor (1006) is installed on one side of the mounting plate (11). A take-up roller (1007) is installed through the mounting plate (11). A third rotating shaft is installed on one side of the mounting plate (11). A second pinion (1008) is installed on the third rotating shaft. A groove is provided on the second pinion (1008). A pressure roller (1009) is rotatably connected in the groove. The pressure roller (1009) slides in the rotating groove (1010). The sixth motor (1006) is connected to the control system.

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