Automatic device for making lithium battery electrode sheet and process thereof

Abstract

The application discloses an automatic electrode sheet manufacturing device and a process thereof, and relates to the technical field of electrode sheet manufacturing. The device comprises a workbench, a first sheet roll arranged on the workbench, a shearing unit, a rotating disc, a detection driving assembly and a pressure material returning assembly. The top of the workbench is provided with a control end electrically connected. The shearing unit is arranged on the side wall of the workbench, and the inside of the shearing unit is provided with a cutter, a pressing plate and a connecting plate. The rotating disc is arranged on one side of the workbench, and the outer wall of the rotating disc is provided with roll rollers arranged at equal angles. Through the application, the problem that the effective area of the electrode sheet is directly contacted by the hands of workers, and sweat, oil stains and environmental dust carried by the workers are transferred to the surface of the electrode sheet is solved. Even if disposable protective gloves are worn, the gloves will be contaminated with metal debris, shed active substances and other foreign matters after being used or contacted with equipment and tools for many times, and then the electrode sheet is secondarily contaminated through contact.

Description

Technical Field

[0001] This invention relates to the field of electrode sheet manufacturing technology, specifically to an automated electrode sheet manufacturing device and process for lithium batteries. Background Technology

[0002] Lithium-ion batteries are a new generation of high-performance, green, and high-energy batteries, and have become a key focus of high-tech development. Lithium-ion batteries possess the following characteristics: high voltage, high capacity, low power consumption, no memory effect, no pollution, small size, low internal resistance, low self-discharge, and a high cycle life. Due to these characteristics, lithium-ion batteries are widely used in numerous civilian and military fields, including mobile phones, laptops, and tablets.

[0003] For example, the lithium battery electrode sheet making machine disclosed in CN107958990B can achieve the clamping and loosening of the electrode sheet by controlling the extension and retraction of the first clamping plate in the converter through the second cylinder, which simplifies the electrode sheet replacement operation. However, the existing lithium battery electrode sheet making device still has some shortcomings.

[0004] Currently, mainstream lithium battery electrode manufacturing equipment still relies heavily on manual intervention in the winding process: when the electrode reaches the set length, workers must manually cut the electrode, then manually disassemble the finished roll on the winding roller and transfer it. This process is one of the main sources of electrode contamination: on the one hand, workers' hands directly contact the effective area of ​​the electrode, transferring their own sweat, oil, and environmental dust to the electrode surface; on the other hand, even if disposable protective gloves are worn, after repeated use or contact with equipment and tools, the gloves will also be contaminated with metal shavings, detached active materials, and other foreign matter, thus causing secondary contamination of the electrode through contact.

[0005] To address the aforementioned issues, there is an urgent need for innovative designs based on existing automated electrode fabrication equipment for lithium batteries. Summary of the Invention

[0006] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different approach. Specifically, the invention aims to provide an automated electrode fabrication device and process for lithium-ion batteries, addressing the issue raised in the background where workers' hands directly contact the effective area of ​​the electrode, transferring sweat, oil, and environmental dust onto the electrode surface. Even with disposable protective gloves, repeated use or contact with equipment and tools can lead to contamination of the gloves with metal fragments, detached active materials, and other foreign matter, resulting in secondary contamination of the electrode.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automated sheet-making device for lithium battery electrode sheets, comprising a worktable and a first sheet roll disposed on the worktable, and further comprising a shearing unit, a turntable, a detection drive assembly and a pressure unloading assembly; The top of the workbench is equipped with an electrically connected control terminal, and the shearing unit is located on the side wall of the workbench, which contains a cutter, a pressing plate and a connecting plate. The turntable is located on one side of the workbench, and its outer wall has rollers distributed at equal angles. The detection drive assembly is connected between the shearing unit and the turntable, and the pressure unloading assembly is located on the back of the turntable. After the cutter cuts the electrode sheet, the detection drive assembly drives the turntable to rotate, and at the same time, the pressure unloading assembly automatically pushes the wound sheet roll out of the winding roller.

[0008] Preferably, an extension plate is fixedly connected to the side wall of the connecting plate, a first spring is provided on the extension plate, a detection plate is slidably provided on the side wall of the workbench, a connecting rod is fixedly connected to one side of the detection plate, and the first spring is disposed between the extension plate and the detection plate.

[0009] Preferably, the detection drive assembly includes a drive disk, a ratchet, and a pawl. The ratchet is fixedly connected to the back of the turntable, and a rotating roller is rotatably disposed at its center. The rotating roller is provided with a pawl, and a drive rod is fixedly connected to the back of the rotating roller. The drive rod is slidably disposed in the waist groove at the end of the connecting rod.

[0010] Preferably, there is a gap between the roller and the back of the turntable, and the pawl is matched with the teeth of the ratchet for unidirectional drive of the turntable rotation.

[0011] Preferably, the pressure ejection assembly includes a pressing block, a pressure receiving block, a push rod, and a second spring. The pressing block is fixedly connected to the side wall of the worktable, and its inner wall has a gradually thickening arc-shaped structure.

[0012] Preferably, a circular groove is provided on the back of the turntable, and pressure blocks are provided in the circular groove at equal angles. A push rod is fixedly connected to the end of the pressure block, and the push rod passes through the turntable and abuts against the take-up core sleeved on the winding roller.

[0013] Preferably, the second spring is sleeved on the outside of the push rod and positioned between the turntable and the pressure block, wherein the pressure block is in contact with the inner wall of the pressing block.

[0014] Preferably, the turntable has a total of 5 rollers arranged in a ring at equal angles, and each roller corresponds to a set of pressure unloading components.

[0015] Preferably, the cutter and the pressing plate are arranged correspondingly above and below each other, and the control terminal is used to control the cutting timing and cutting action of the cutting unit.

[0016] An automated electrode sheet fabrication process for lithium batteries includes the following steps: S1. Feeding and winding: Wrap the end of the first coil of electrode sheet around the winding core of the winding roller, stretch the first spring to make the detection plate press against the upper surface of the electrode sheet, and start the equipment to begin winding. S2. Automatic cutting: When the winding reaches the set length, the control end drives the shearing unit to operate, the pressing plate presses the electrode sheet, and the cutter cuts the electrode sheet; S3. Automatic roll changing and unloading: After the electrode is cut, the first spring retracts and drives the detection plate to press down. The drive plate is driven to rotate through the connecting rod, which in turn drives the turntable to rotate and switch the roll. At the same time, the pressure block is gradually pressed along the inner wall of the pressing block, which pushes the push rod to automatically push the wound roll to the preset shelf. S4. Rewinding Cycle: The worker applies tape to fix the ejected sheet roll, wraps the electrode end at the pressing plate around the empty winding core, stretches the first spring to reset the detection plate and press against the electrode, and continues the next round of winding.

[0017] Compared with the prior art, the beneficial effects of the present invention are: When the electrode sheet reaches the set length, the control unit automatically drives the shearing unit to operate. The pressing plate first presses the electrode sheet and then the cutter cuts it neatly. Subsequently, the first spring contracts and drives the detection plate to press down. The connecting rod drives the turntable to rotate and switch the winding rollers. At the same time, the pressure unloading component automatically pushes the finished sheet roll to the preset shelf. On the one hand, this invention significantly reduces the contact area and time between manual operation and the electrode sheet, completely solving the electrode sheet contamination problem caused by traditional manual winding and material changing. Manual operation only requires contact with an area of ​​about 10cm at the end of the electrode sheet for rewinding and tape fixation, reducing contact time by more than 90%. The foreign matter contamination rate on the electrode sheet surface is reduced from 2.5%-4% to below 0.2%, effectively avoiding cross-contamination caused by oil stains, sweat, residual metal fragments on gloves, and active material particles from workers' hands, significantly improving the safety and cycle life of the battery cell. On the other hand, it realizes a fully automated linkage of cutting-winding-unwinding, reducing the material changing time of a single roll from 5-10 minutes in traditional manual operation to less than 30 seconds, increasing equipment utilization from 70%-75% to over 92%, and increasing the daily production capacity of each production line by more than 25%. At the same time, it eliminates the need for workers to manually carry 15-30kg finished material rolls, significantly reducing the labor intensity of workers. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the electrode sheet fabrication apparatus of the present invention.

[0019] Figure 2 This is a schematic diagram of the electrode sheet fabrication device of the present invention in the state of sheet roll replacement.

[0020] Figure 3 This is a schematic diagram of the working unit of the electrode sheet fabrication device of the present invention.

[0021] Figure 4 This is a schematic diagram of the electrode sheet fabrication device and detection drive assembly of the present invention.

[0022] Figure 5 This is a schematic diagram of the detection drive assembly on the back side of the film roll of the present invention.

[0023] Figure 6 This is a schematic diagram of the internal structure of the detection driving component of the present invention.

[0024] Figure 7 This is another schematic diagram of the internal structure of the detection drive component of the present invention.

[0025] Figure 8 This is a schematic diagram of the pressure unloading assembly of the present invention.

[0026] Figure 9 for Figure 2 An enlarged schematic diagram of the structure at point A.

[0027] Figure 10 for Figure 3 Enlarged schematic diagram of the structure at point B.

[0028] In the diagram: 1. Workbench; 101. Control unit; 2. Shearing unit; 201. Cutter; 202. Pressing plate; 203. Connecting plate; 3. First roll; 4. Turntable; 5. Roller; 6. Extension plate; 7. Detection plate; 8. Connecting rod; 9. First spring; 10. Pressing block; 11. Drive plate; 1101. Drive rod; 1102. Rotary roller; 1103. Pawl; 12. Pressing block; 13. Push rod; 14. Second spring; 15. Ratchet. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1 to 10 The present invention provides a technical solution: an automated sheet-making device for lithium battery electrode sheets, including a worktable 1 and a first sheet roll 3 disposed on the worktable 1, and further including a shearing unit 2, a turntable 4, a detection drive assembly and a pressure unloading assembly; The top of the workbench 1 is provided with an electrically connected control terminal 101, and the shearing unit 2 is located on the side wall of the workbench 1. Inside the shearing unit 2 are a cutter 201, a pressing plate 202 and a connecting plate 203. Turntable 4 is located on one side of workbench 1, and its outer wall has rollers 5 distributed at equal angles; The detection drive assembly is connected between the shearing unit 2 and the turntable 4. The pressure unloading assembly is located on the back of the turntable 4. After the cutter 201 cuts the electrode sheet, the detection drive assembly drives the turntable 4 to rotate. At the same time, the pressure unloading assembly automatically pushes the wound sheet roll out of the winding roller 5.

[0031] In this embodiment, the workbench 1 is an integral welded steel structure with a powder-coated anti-corrosion finish, possessing sufficient rigidity to withstand high-speed winding vibration. The control unit 101 is a 7-inch touchscreen PLC all-in-one machine, fixed to the top operating side of the workbench 1 with bolts. It has a built-in meter counter module, which can set the winding length, adjust cutting parameters, and monitor equipment operation. The shearing unit 2 is pneumatically driven and fixed to the discharge side wall of the workbench 1 with bolts. It integrates a cutter 201, a pressing plate 202, and a connecting plate 203. The cutter 201 is made of hard alloy with a cutting edge angle of 30° to ensure a smooth and burr-free cut. The pressing plate 202 is covered with a thick silicone pad to press the electrode sheet tightly during cutting to prevent displacement. The turntable 4 is rotatably connected to the winding side of the workbench 1 via a central shaft. Five rollers 5 are distributed at equal angles along the circumference of the end face. The rollers 5 are made of stainless steel and their length is adapted to the width of the electrode sheet. The detection drive component and the pressure unloading component form an integrated automatic station of "cutting-roll changing-unloading", which greatly simplifies manual operation.

[0032] An extension plate 6 is fixedly connected to the side wall of the connecting plate 203. A first spring 9 is provided on the extension plate 6. A detection plate 7 is slidably provided on the side wall of the worktable 1. A connecting rod 8 is fixedly connected to one side of the detection plate 7. The first spring 9 is located between the extension plate 6 and the detection plate 7.

[0033] In this embodiment, the connecting plate 203 is fixed to the lower side wall of the shearing unit 2, and the extension plate 6 is horizontally welded to the end of the side wall of the connecting plate 203. The top surface is machined with spring hanging holes. The first spring 9 is a tension spring, and its two ends are respectively hung on the hanging holes on the top of the extension plate 6 and the detection plate 7. Two linear sliders are fixed on the back of the detection plate 7 and slide in cooperation with the vertical guide rail on the side wall of the workbench 1. One end of the connecting rod 8 is fixed to the middle of the side wall of the detection plate 7, and the other end is provided with a waist-shaped sliding groove. When winding, the taut electrode pushes the detection plate 7 upward, so that the first spring 9 is in a tensioned energy storage state. After the electrode is cut, the first spring 9 contracts and pulls the detection plate 7 downward, driving the connecting rod 8 to move synchronously.

[0034] The detection drive assembly includes a drive disk 11, a ratchet 15, and a pawl 1103. The ratchet 15 is fixedly connected to the back of the turntable 4, and a rotating roller 1102 is rotatably arranged in the center of the turntable 4. The rotating roller 1102 is provided with a pawl 1103. A drive rod 1101 is fixedly connected to the back of the rotating roller 1102, and the drive rod 1101 is slidably arranged in the waist groove at the end of the connecting rod 8.

[0035] In this embodiment, the detection drive assembly includes a drive disk 11, a ratchet 15, and a pawl 1103. The ratchet 15 is fixed to the center of the back of the turntable 4 and rotates synchronously with the turntable 4. The roller 1102 is rotatably connected to the center hole of the ratchet 15, with its front end extending 15mm out of the end face of the ratchet and its rear end passing through the central axis of the turntable 4 and vertically welded to the drive rod 1101. The pawl 1103 is rotatably connected to the front side wall of the roller 1102 by a pin. A torsion spring is sleeved on the pin to keep the pawl 1103 always close to the teeth of the ratchet 15. The end of the drive rod 1101 is embedded in the waist-shaped groove at the end of the connecting rod 8 for rolling engagement. When the connecting rod 8 moves downward, it pushes the drive rod 1101 to rotate through the groove, driving the roller 1102 and the pawl 1103 to rotate, thereby driving the ratchet 15 and the turntable 4 to rotate synchronously.

[0036] A gap is left between the roller 1102 and the back of the turntable 4, and the pawl 1103 is matched with the teeth of the ratchet 15 for unidirectional drive of the turntable 4.

[0037] In this embodiment, a 2mm axial gap is left between the roller 1102 and the back of the turntable 4 to avoid rotational friction interference. The pawl tip of the pawl 1103 is perfectly matched with the tooth groove angle of the ratchet 15, which can only drive the ratchet 15 to rotate clockwise in one direction. When the roller 1102 rotates counterclockwise, the pawl 1103 slips, realizing one-way intermittent transmission and ensuring that the turntable 4 rotates precisely 72° after each electrode cutting to complete the switching of the roller 5 station.

[0038] The pressure ejection assembly includes a pressing block 10, a pressure receiving block 12, a push rod 13, and a second spring 14. The pressing block 10 is fixedly connected to the side wall of the worktable 1, and its inner wall has a gradually thickening arc-shaped structure.

[0039] In this embodiment, the pressure ejection assembly includes a pressing block 10, a pressure receiving block 12, a push rod 13, and a second spring 14. The pressing block 10 is a fan-shaped arc block with a central angle of 90° and is fixed to the side wall of the worktable 1. It is located at the ejection station on the lower left of the turntable 4 and is coaxially arranged with the turntable 4. The inner wall of the pressing block 10 has an arc structure that gradually thickens along the circumference. The thickness increases uniformly by 15mm from the starting end to the ending end. When the turntable 4 rotates, the pressure receiving block 12 rolls along the inner wall of the pressing block 10 and is subjected to gradually increasing radial pressure, which provides power for ejection.

[0040] A circular groove is provided on the back of the turntable 4, and pressure blocks 12 are provided in the groove at equal angles. A push rod 13 is fixedly connected to the end of the pressure block 12. The push rod 13 passes through the turntable 4 and abuts against the winding core sleeved on the winding roller 5.

[0041] In this embodiment, a circular groove is provided on the back of the turntable 4. Five radial grooves are distributed at equal angles along the circumference of the groove. A pressure block 12 is slidably installed in each groove. The pressure block 12 is cylindrical and its end is in rolling contact with the inner wall of the pressing block 10. One end of the push rod 13 is threaded to the center of the pressure block 12, and the other end extends through the through hole on the end face of the turntable 4 into the center hole of the winding roller 5. The end just abuts against the end face of the take-up core. When the pressure block 12 slides inward under radial pressure, it drives the push rod 13 to push the take-up core away from the winding roller 5.

[0042] The second spring 14 is sleeved on the outside of the push rod 13 and is located between the turntable 4 and the pressure block 12. The pressure block 12 is in contact with the inner wall of the pressing block 10.

[0043] In this embodiment, the second spring 14 is a compression spring, which is sleeved on the outside of the push rod 13. Its two ends abut against the inner wall of the groove of the turntable 4 and the end face of the pressure block 12, respectively. When the pressure is removed from the action area of ​​the pressing block 10, the radial pressure disappears. The elastic force of the second spring 14 pushes the pressure block 12 and the push rod 13 to reset outward, so that the end of the push rod 13 retracts into the center hole of the winding roller 5, which does not affect the installation of the next winding core.

[0044] The turntable 4 has a total of 5 rollers 5, which are arranged in a ring at equal angles. Each roller 5 corresponds to a set of pressure unloading components.

[0045] In this embodiment, the turntable 4 is provided with a total of 5 winding rollers 5, with an included angle of 72° between adjacent winding rollers. Each winding roller 5 corresponds to a set of independent pressure unloading components. Every time the turntable 4 rotates 72°, exactly one winding roller 2 that has completed winding moves to the unloading station for automatic unloading. At the same time, the next empty winding roller 5 switches to the winding station. The matching shelf is set directly below the unloading station. The height of each layer is consistent with the center height of the corresponding winding roller. There are 5 coaxial bearing connection stations, so that the ejected rolls fall directly into the shelf without manual handling.

[0046] The cutter 201 and the pressing plate 202 are arranged vertically and vertically respectively. The control terminal 101 is used to control the cutting timing and cutting action of the shearing unit 2.

[0047] In this embodiment, the cutter 201 and the pressing plate 202 are arranged vertically and vertically respectively. The pressing plate 202 is located in front of the feed direction of the cutter 201. The shearing unit 2 is driven by a dual cylinder. The cylinder of the pressing plate 202 moves before the cylinder of the cutter 201. During cutting, the electrode sheet is pressed first and then cut off to ensure a flat cut. The control terminal 101 detects the running length of the electrode sheet through the encoder on the guide roller. When the set value is reached, the signal is automatically output to drive the pressing plate 202 and the cutter 201 to move in sequence.

[0048] An automated electrode sheet fabrication process for lithium batteries includes the following steps: S1. Feeding and winding: Wrap the electrode end of the first roll 3 around the winding core of the winding roller 5, stretch the first spring 9 to make the detection plate 7 press against the upper surface of the electrode, and start the equipment to begin winding. S2. Automatic cutting: When the winding reaches the set length, the control end 101 drives the shearing unit 2 to operate, the pressing plate 202 presses the electrode sheet, and the cutter 201 cuts the electrode sheet. S3. Automatic roll changing and unloading: After the electrode is cut, the first spring 9 contracts and drives the detection plate 7 to press down. The drive plate 11 is driven to rotate through the connecting rod 8, which in turn drives the turntable 4 to rotate and switch the roll 5. At the same time, the pressure block 12 is gradually pressed along the inner wall of the pressing block 10, which pushes the push rod 13 to automatically push the wound roll to the preset shelf. S4. Continuous winding cycle: The worker applies tape to fix the rolled sheet, wraps the electrode end at the pressing plate 202 around the empty winding core, stretches the first spring 9 to reset the detection plate 7 to press against the electrode, and continues the next round of winding.

[0049] Working principle: When using the automated sheet making device for lithium battery electrode sheets, the first roll 3 is first installed at the unwinding station, and the electrode sheet end is led out and passed through each guide roller and shearing unit 2 in sequence, and fixed on the winding core of the winding roller 5 at the winding station; the detection plate 7 is pushed upward to stretch the first spring 9, so that the bottom surface of the detection plate 7 is tightly attached to the upper surface of the electrode sheet; the winding length is set at the control terminal 101, and the equipment is started to start automatic winding.

[0050] During the winding process, the electrode sheet remains taut and pushes upward against the detection plate 7, keeping the first spring 9 in a stretched and energy-stored state. The control terminal 101 detects the running length of the electrode sheet in real time through the encoder, and automatically drives the shearing unit 2 when the set value is reached. The pressing plate 202 first presses the electrode sheet downward to prevent displacement, and then the cutter 201 neatly cuts the electrode sheet.

[0051] After the electrode sheet is cut, the supporting force disappears, the first spring 9 contracts and pulls the detection plate 7 downward, causing the connecting rod 8 to move synchronously. The connecting rod 8 pushes the drive rod 1101 to rotate through the waist-shaped slide groove, which drives the rotating roller 1102 and the pawl 1103 to rotate, thereby driving the ratchet 15 and the turntable 4 to rotate synchronously by 72°, completing the switching of the roller winding station.

[0052] During the rotation of turntable 4, the pressure block 12 at the unloading station rolls along the inner wall of the pressing block 10, sliding inward under gradually increasing radial pressure. This compresses the second spring 14 and drives the push rod 13 to move inward, pushing the take-up core to slide outward along the winding roller axis, ultimately pushing the finished roll completely out and into the shelf. After the pressure block 12 leaves the area of ​​the pressing block 10, the second spring 14 extends, causing the push rod 13 to reset.

[0053] Finally, workers only need to secure the film rolls on the shelf with adhesive tape, wrap the electrode ends around the new empty take-up core, and push the detection plate 7 to reset to continue production.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automated electrode sheet fabrication apparatus for lithium batteries, comprising a worktable (1) and a first roll of electrode sheet (3) disposed on the worktable (1), characterized in that: It also includes a shearing unit (2), a turntable (4), a detection drive assembly, and a pressure unloading assembly; The workbench (1) is provided with an electrically connected control terminal (101) at the top, and the shearing unit (2) is provided on the side wall of the workbench (1), and is provided with a cutter (201), a pressing plate (202) and a connecting plate (203) inside. The turntable (4) is located on one side of the workbench (1), and its outer wall has rollers (5) distributed at equal angles. The detection drive assembly is connected between the shearing unit (2) and the turntable (4). The pressure unloading assembly is located on the back of the turntable (4). After the cutter (201) cuts the electrode sheet, the detection drive assembly drives the turntable (4) to rotate. At the same time, the pressure unloading assembly automatically pushes the wound sheet out of the roll (5).

2. The automated electrode sheet fabrication device for lithium batteries according to claim 1, characterized in that: An extension plate (6) is fixedly connected to the side wall of the connecting plate (203). A first spring (9) is provided on the extension plate (6). A detection plate (7) is slidably provided on the side wall of the worktable (1). A connecting rod (8) is fixedly connected to one side of the detection plate (7). The first spring (9) is located between the extension plate (6) and the detection plate (7).

3. The automated electrode sheet fabrication device for lithium batteries according to claim 2, characterized in that: The detection drive assembly includes a drive disk (11), a ratchet (15), and a pawl (1103). The ratchet (15) is fixedly connected to the back of the turntable (4), and a rotating roller (1102) is rotatably arranged in the center of the turntable. The rotating roller (1102) is provided with a pawl (1103). A drive rod (1101) is fixedly connected to the back of the rotating roller (1102), and the drive rod (1101) is slidably arranged in the waist groove at the end of the connecting rod (8).

4. The automated electrode sheet fabrication device for lithium batteries according to claim 3, characterized in that: There is a gap between the roller (1102) and the back of the turntable (4), and the pawl (1103) is matched with the teeth of the ratchet (15) for unidirectional driving of the turntable (4) to rotate.

5. The automated electrode sheet fabrication device for lithium batteries according to claim 1, characterized in that: The pressure unloading assembly includes a pressing block (10), a pressure block (12), a push rod (13), and a second spring (14). The pressing block (10) is fixedly connected to the side wall of the workbench (1), and its inner wall has a gradually thickening arc-shaped structure.

6. The automated electrode sheet fabrication device for lithium batteries according to claim 5, characterized in that: The turntable (4) has a circular groove on its back, and pressure blocks (12) are distributed at equal angles in the groove. A push rod (13) is fixedly connected to the end of the pressure block (12). The push rod (13) passes through the turntable (4) and abuts against the winding core sleeved on the winding roller (5).

7. The automated electrode sheet fabrication device for lithium batteries according to claim 6, characterized in that: The second spring (14) is sleeved on the outside of the push rod (13) and is located between the turntable (4) and the pressure block (12), wherein the pressure block (12) is in contact with the inner wall of the pressing block (10).

8. The automated electrode sheet fabrication device for lithium batteries according to claim 1, characterized in that: The turntable (4) has a total of 5 rollers (5) arranged in a ring at equal angles, and each roller (5) corresponds to a set of pressure unloading components.

9. An automated electrode sheet fabrication device for lithium batteries according to claim 1, characterized in that: The cutter (201) and the pressing plate (202) are arranged vertically and vertically respectively, and the control terminal (101) is used to control the cutting timing and cutting action of the cutting unit (2).

10. An automated manufacturing process for lithium battery electrode sheets, applicable to the automated manufacturing process for lithium battery electrode sheets according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Feeding and winding: Wrap the electrode end of the first roll (3) around the winding core of the winding roller (5), stretch the first spring (9) so that the detection plate (7) presses against the upper surface of the electrode, and start the equipment to begin winding. S2, Automatic cutting: When the winding reaches the set length, the control end (101) drives the shearing unit (2) to operate, the pressing plate (202) presses the electrode sheet, and the cutter (201) cuts the electrode sheet; S3, Automatic roll changing and unloading: After the electrode is cut, the first spring (9) contracts and drives the detection plate (7) to press down. The drive plate (11) is driven to rotate through the connecting rod (8), which in turn drives the turntable (4) to rotate and switch the roll (5); at the same time, the pressure block (12) is gradually pressed along the inner wall of the pressing block (10), pushing the push rod (13) to automatically push the wound roll to the preset shelf; S4, Continued winding cycle: The worker applies tape to fix the rolled sheet, wraps the electrode end at the pressing plate (202) around the empty winding core, stretches the first spring (9) to reset the detection plate (7) to press against the electrode, and continues the next round of winding.

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