Polymer soft package battery pole piece rolling equipment with thickness closed loop detection

Abstract

The application discloses a kind of polymer soft package battery pole piece roll equipment with thickness closed loop detection, including rack, dust guide component, dust suction component, driving roller component, compression roller component and laser thickness measuring component;The end of the rack is provided with multiple guide rollers, the other end of the rack is provided with control box, the upper surface of the control box is symmetrically provided with support frame at front and back ends;The dust guide component is set to the inside of rack, for battery pole piece when passing through the middle of dust guide component, dust removal is carried out on the double sides of battery pole piece simultaneously;The dust suction component is installed on one side of rack, and the air suction end of the dust suction component is connected with dust guide component;The driving roller component is installed in the inside bottom of support frame, for driving battery pole piece to move;The compression roller component is installed in the inside top of support frame, and the compression roller component is aligned with driving roller component setting;The laser thickness measuring component is provided with two, and the two laser thickness measuring components are respectively set on the two sides of driving roller component.

Description

Technical Field

[0001] This invention relates to the field of rolling equipment technology, specifically to a polymer soft-pack battery electrode rolling equipment with closed-loop thickness detection. Background Technology

[0002] During the boom period driven by both the new energy vehicle and energy storage markets, polymer pouch batteries have been widely used in various portable electronic devices, new energy vehicles, and energy storage systems due to their advantages such as high energy density, good safety, flexible shape, and light weight. As the core component of polymer pouch batteries, the quality of their fabrication directly determines the battery's energy density, cycle life, and safety performance. The rolling process is a crucial step in electrode fabrication, its main function being to compact the coated electrodes, increase the density of the active material, reduce the battery's internal resistance, and ensure uniform electrode thickness, laying the foundation for subsequent cutting, stacking, or winding processes.

[0003] In the prior art, utility model patent with publication number CN223828421U discloses a battery electrode rolling equipment, comprising: a machine base, wherein an unwinding roller is provided on the machine base for unwinding the electrode sheet; a rolling mechanism, disposed on the machine base, the rolling mechanism comprising two sets of rolling units, each set of rolling units comprising a support roller and a working roller, the working roller being connected to a pressing drive, the pressing drive driving the working roller to move closer to and away from the support roller; a cleaning assembly, comprising a rotating motor and a cleaning roller connected to the output end of the rotating motor, the cleaning roller being disposed on the side of the working roller away from the support roller, the cleaning roller being mounted with multiple connecting plates, the ends of the connecting plates being provided with brushes; and a tension adjusting assembly, comprising a lifting device and a tension roller mounted on the lifting device, the lifting device being used to adjust the height of the tension roller; wherein, the working roller of one set of rolling units is located above the support roller, and the working roller of the other set of rolling units is located below the support roller.

[0004] The battery electrode rolling equipment provided by the aforementioned patent can clean the surface of the working rollers in real time, improving the surface quality of the electrode sheets. However, in practice, dust easily adheres to the surface of the battery electrode rolling equipment during rolling, and existing rolling equipment does not have a dust removal mechanism, which makes it easy for dust to be rolled onto the battery electrode sheets during subsequent rolling. At the same time, it cannot detect the thickness of the rolled battery electrode sheets, and cannot dynamically adjust the distance between the two rollers when the thickness of the rolled battery electrode sheets does not meet the usage requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a polymer soft-pack battery electrode rolling device with closed-loop thickness detection, which aims to improve the existing rolling devices that do not have a dust removal mechanism, which makes it easy for dust to be rolled onto the battery electrode during subsequent rolling. At the same time, the device cannot detect the thickness of the rolled battery electrode and cannot dynamically adjust the distance between the two pressure rollers when the thickness of the rolled battery electrode cannot meet the usage requirements.

[0006] This invention is implemented as follows: A polymer soft-pack battery electrode rolling device with closed-loop thickness detection includes: A frame, one end of which is provided with multiple guide rollers, and the other end of which is provided with a control box. Support frames are symmetrically arranged at the front and rear ends of the upper surface of the control box. A dust-guiding assembly is disposed inside the frame and is used to remove dust from both sides of the battery electrode simultaneously when the battery electrode passes through the middle of the dust-guiding assembly. A dust collection component is installed on one side of the frame, and the suction end of the dust collection component is connected to the dust guide component. The suction force of the dust collection component is transferred to the dust guide component through the operation of the dust collection component, so as to achieve the purpose of dust collection on both sides of the battery electrode sheet. A drive roller assembly is installed at the bottom inner side of the support frame to drive the battery electrode sheets to move. A pressure roller assembly is mounted on the top inner side of a support frame and is aligned with a drive roller assembly. The laser thickness measuring component includes two components, which are respectively located on both sides of the drive roller assembly. The two laser thickness measuring components are used to measure the thickness of the battery electrode sheet before and after rolling. The laser thickness measuring component, the dust collection component, the drive roller assembly, and the pressure roller assembly are all electrically connected to the control box.

[0007] Preferably, the frame has support feet at the bottom corners, and side plates are symmetrically arranged on both sides of the frame, with the two side plates connected by reinforcing rods. The guide roller is disposed between the two side plates. The side plates have through holes aligned with the dust-guiding assembly. The control box has a connecting slot at the top, the support frame has mounting holes at the bottom, the support frame has a guide opening at the top, and guide protrusions are symmetrically arranged on both sides of the guide opening. The support frame has a support plate at the top, with a through hole in the middle. The two support frames are connected at the top by a connecting rod. The frame has a mounting plate aligned with the dust-collecting assembly on one side, and the mounting plate has an electrical connection slot for electrically connecting the dust-collecting assembly to the frame.

[0008] Preferably, the control box contains a control module, which is a PLC controller. The PLC controller is connected to a data processing module, a control module, and an alarm module. The data processing module receives thickness data measured by two laser thickness measuring components, calculates the thickness deviation, and determines whether the deviation exceeds a preset allowable range. The control module generates corresponding control signals based on the magnitude and direction of the thickness deviation. If the thickness detected by the exit detection component is greater than a preset threshold, the pressure roller assembly reduces the gap between the drive roller assembly and the pressure roller assembly, increasing the roller pressure. If the thickness is less than the preset threshold, the gap between the drive roller assembly and the pressure roller assembly is increased, reducing the roller pressure. Simultaneously, the control module performs pre-control based on the thickness data of the battery electrode sheet before roller pressing, adjusting the roller pressing parameters in advance to reduce the generation of thickness deviation, thus achieving dual closed-loop control of pre-control and real-time control.

[0009] Preferably, the dust guiding assembly includes two dust guiding rollers and a dust guiding tube. A gap is provided between the two dust guiding rollers, and suction holes are evenly distributed on the surface of the dust guiding rollers. A second bearing is provided at the middle of each end of the dust guiding roller, and a transfer pipe is rotatably connected to the second bearing. A flange is provided at the end of the transfer pipe, and multiple flange holes are provided on the flange. The two ends of the dust guiding roller are fixed to the inner side of the frame by bolts passing through the flange holes. A branch pipe is provided at the position of the two dust guiding rollers in the dust guiding tube. A plug pipe is provided at the end of the branch pipe, and multiple sealing rings are provided on the plug pipe. The plug pipe is inserted into the inner side of the transfer pipe. A guide cover is connected to the bottom end of the dust guiding tube.

[0010] Preferably, the dust collection assembly includes a centrifugal fan and a filter element. The centrifugal fan has a mounting ring at its suction end, and the filter element has a mounting connector at its end facing the mounting ring. The middle of the mounting connector communicates with the interior of the filter element, and the mounting connector is threadedly connected to the mounting ring. A limiting ring is provided at the position where the filter element fits against the mounting ring, and a threaded adapter is provided on the side of the limiting ring where the mounting connector is not located. The filter element is inserted into the inside of a guide cover, and the threaded adapter is threadedly connected to the guide cover. A power cord is provided on the side of the centrifugal fan, and a power plug is provided at the bottom of the power cord. An exhaust port is provided at the bottom of the side of the centrifugal fan, and a fixing seat is provided at the bottom of the centrifugal fan. The fixing seat has multiple fixing holes, and the centrifugal fan is fixed to one side of the frame by bolts passing through the fixing holes.

[0011] Preferably, the drive roller assembly includes a drive roller body, a drive motor, and a chain; both ends of the drive roller body are provided with connecting shafts, and the connecting shafts are rotatably connected to bearing seats; and the end of the drive roller body near the drive motor is provided with a transmission joint, the transmission joint is provided with a first sprocket, the output end of the drive motor is provided with a second sprocket, and the first sprocket and the second sprocket are connected by a chain; the bottom of the drive motor is provided with a connecting foot, the connecting foot is provided with multiple connecting holes, and the drive motor is fixed to the frame by bolts passing through the connecting holes.

[0012] Preferably, the pressure roller assembly includes a pressure roller body, a guide joint, and a cylinder; the pressure roller body has shafts at both ends, the guide joint has a third bearing in the middle, and the third bearing is interference-fitted with the shaft; the guide joint has symmetrical locking ports on both sides, which are used to engage with the guide protrusions to ensure stable up-and-down movement of the guide joint; the guide joint has a connector at the top center, and the connector has a connecting groove in the middle; the bottom of the cylinder has a positioning foot that fits against the support plate, and the positioning foot has multiple positioning holes; the cylinder is fixed to the support plate by bolts passing through the positioning holes; the cylinder output end has a telescopic rod, and the bottom end of the telescopic rod has a connecting post, which is threadedly connected to the connecting groove.

[0013] Preferably, the laser side thickness assembly includes a first laser displacement sensor and a second laser displacement sensor. The first laser displacement sensor has a socket on its top, and a connecting hole in its middle. The connecting hole is fitted onto a connecting rod, and a clamping knob is provided on the top of the socket for fixing the position of the first laser displacement sensor. The second laser displacement sensor is mounted on a control box. Both ends of the second laser displacement sensor have mounting feet with first bolt holes. Both the first and second laser displacement sensors have connecting wires on their sides, and each connecting wire has a connecting plug at its end, which is electrically connected to the control box. The second laser displacement sensor is aligned with the first laser displacement sensor, and a battery electrode passes between the first and second laser displacement sensors.

[0014] Preferably, it also includes a limiting component. A pair of guide rails are provided on the bottom inner side of the frame. Threaded holes are provided at the front and rear ends of the frame, aligned with the middle of the two guide rails. Two limiting components are provided, symmetrically arranged on the inner side of the frame. The bottom end of the limiting component is engaged with the guide rail, and the side of the limiting component facing the frame is threadedly connected to the threaded hole.

[0015] Preferably, the limiting assembly includes a limiting frame and a drive screw. Multiple mounting seats are provided on opposite sides of the two limiting frames. Limiting rollers are rotatably connected to the mounting seats. The bottom of each limiting frame has symmetrically arranged notches on both sides. Slider blocks are aligned on both sides of the bottom surface of each limiting frame, and the bottom of each slider has a sliding opening that engages with a guide rail. An adapter is provided in the middle of the side of the limiting frame facing the machine frame. A first bearing is provided in the middle of the adapter. An adapter shaft is provided at one end of the drive screw facing the limiting frame, and the adapter shaft is interference-fitted with the first bearing. A rotating handle is provided at the outer end of the drive screw.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention features a dust-guiding component and a dust-collecting component mounted on the frame. The combined action of these components effectively removes dust from the surface of the battery electrodes, preventing dust from being pressed onto them. The drive roller assembly, in conjunction with the roller assembly, applies pressure to the battery electrodes, facilitating their compaction to a preset thickness. The pressure roller assembly can be adjusted vertically to produce electrodes of varying thicknesses. Furthermore, both the drive roller assembly and the pressure roller assembly are equipped with laser thickness gauges at their front and rear ends. These gauges measure the thickness of the battery electrodes before and after pressing, determining if the thickness meets the preset requirements. If the thickness does not meet the preset requirements, the pressure roller assembly is adjusted vertically to dynamically regulate the pressing process, ensuring the electrode thickness meets processing specifications.

[0017] 2. The present invention has symmetrically arranged limiting components on both sides of the frame. By adjusting the position of the limiting components, the entire rolling equipment can transport battery electrode sheets of different widths, which facilitates stable transport of battery electrode sheets and avoids deviation of battery electrode sheets during transport.

[0018] 3. The present invention has a guide frame in front of the drive roller assembly, and multiple guide rollers are provided on the guide frame. The guide rollers can stably transport and roll the battery electrode sheets being transported. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the invention from a rear-end oblique top-down view; Figure 2 This is a schematic diagram of the overall structure of the invention from a top-down, front-end perspective; Figure 3 This is a schematic diagram of the frame structure of the present invention from a front-end oblique downward view; Figure 4 This is a schematic diagram of the structure of the frame of the present invention from a rear-end oblique downward view; Figure 5 This is a structural block diagram of the internal structure of the control box of this invention; Figure 6 This is a schematic diagram of the structure of the limiting component of the present invention; Figure 7 This is a schematic diagram of the dust-guiding component of the present invention; Figure 8 This is a schematic diagram of the structure of the dust collection component of the present invention; Figure 9 This is a schematic diagram of the drive roller assembly structure of the present invention; Figure 10 This is a schematic diagram of the structure of the pressure roller assembly of the present invention; Figure 11 This is a schematic diagram of the structure of the laser thickness measurement component of the present invention; Figure 12 This is a schematic diagram of the guide frame of the present invention.

[0020] In the diagram: 1. Frame; 10. Support leg; 11. Side plate; 111. Threaded hole; 112. Through hole; 12. Reinforcing rod; 13. Guide roller; 14. Control box; 141. Connecting slot; 15. Support frame; 151. Mounting hole; 152. Guide opening; 153. Guide protrusion; 16. Support plate; 161. Through hole; 17. Connecting rod; 18. Guide rail; 19. Mounting plate; 191. Power connection slot; 2. Limiting assembly; 21. Limiting frame; 211. Mounting base; 212. Limiting roller; 213. Adapter; 214. First Bearing; 215, notch; 216, slider; 217, sliding groove; 22, drive screw; 221, adapter shaft; 222, rotary handle; 3, dust guide assembly; 31, dust guide roller; 311, suction hole; 312, second bearing; 313, adapter pipe; 314, flange; 315, flange hole; 32, dust guide pipe; 321, guide cover; 322, branch pipe; 323, insertion pipe; 324, sealing ring; 4, dust collection assembly; 41, centrifugal fan; 411, connecting wire; 412, power plug; 413, mounting ring; 414 415. Exhaust port; 416. Fixing seat; 42. Fixing hole; 42. Filter element; 421. Threaded adapter; 422. Limiting ring; 423. Mounting joint; 5. Drive roller assembly; 51. Drive roller body; 511. Connecting shaft; 512. Bearing seat; 513. Transmission joint; 514. First sprocket; 52. Drive motor; 521. Second sprocket; 522. Connecting foot; 523. Connecting hole; 53. Chain; 6. Pressure roller assembly; 61. Pressure roller body; 611. Shaft; 62. Guide joint; 620. Engaging joint; 62 1. Third bearing; 622. Connector; 623. Connecting groove; 63. Cylinder; 631. Positioning foot; 632. Positioning hole; 633. Telescopic rod; 634. Connecting column; 7. Laser thickness measuring assembly; 71. First laser displacement sensor; 711. Socket joint; 712. Socket hole; 713. Clamping knob; 72. Second laser displacement sensor; 721. Mounting foot; 722. First bolt hole; 723. Connecting cable; 724. Connecting plug; 8. Guide frame; 81. Support roller; 82. Mounting frame; 83. Second bolt hole. Detailed Implementation

[0021] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0022] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, the polymer soft-pack battery electrode rolling equipment with thickness closed-loop detection disclosed in this embodiment has an overall frame 1 as the basic support structure. Support feet 10 are provided at the corners of the bottom surface of the frame 1. Side plates 11 are symmetrically installed on both sides of the frame 1. The two side plates 11 are connected by reinforcing rods 12 to improve the overall structural stability of the frame 1. Multiple guide rollers 13 are arranged between the two side plates 11 at one end of the frame 1 to provide guidance for the initial conveying of the battery electrode. A control box 14 is installed at the other end of the frame 1. Support frames 15 are symmetrically fixed at the front and rear ends of the upper surface of the control box 14. The tops of the two support frames 15 are connected by connecting rods 17. A pair of guide rails 18 are also provided at the bottom inner side of the frame 1. The side plates 11 on both sides of the frame 1 have through holes 112 corresponding to the positions of the dust guide components 3. A mounting plate 19 is fixed on one side of the frame 1 corresponding to the position of the dust suction components 4. The power connection slot 191 opened on the mounting plate 19 can realize the electrical connection between the dust suction components 4 and the frame 1. The control box 14 has a connecting slot 141 on the top, the support frame 15 has a mounting hole 151 at the bottom, a guide opening 152 on the top, and guide protrusions 153 are symmetrically arranged on both sides of the guide opening 152. The support frame 15 also has a support plate 16 fixed on the top. The through hole 161 in the middle of the support plate 16 provides space for the installation and operation of the pressure roller assembly 6, laying the foundation for the assembly of various components of the entire equipment.

[0023] like Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, a dust guiding assembly 3 is installed inside the frame 1, and a dust suction assembly 4 connected to the dust guiding assembly 3 is installed on one side of the frame 1. The two work together to achieve double-sided dust removal of the battery electrode sheets. The dust guiding assembly 3 consists of two dust guiding rollers 31 and a dust guiding tube 32. A gap is reserved between the two dust guiding rollers 31 for the battery electrode sheets to pass through. Suction holes 311 are evenly arranged on the surface of the dust guiding rollers 31. The suction force of the dust suction assembly 4 can be applied to the surface of the battery electrode sheets through the suction holes 311. A second bearing 312 is provided at the middle of both ends of the dust guiding rollers 31. The bearing 312 is rotatably connected to the adapter pipe 313. The flange 314 at the end of the adapter pipe 313 is fixed to the inside of the frame 1 by bolts passing through the flange hole 315. The dust guide pipe 32 is provided with branch pipes 322 at the positions corresponding to the two dust guide rollers 31. The insertion pipe 323 at the end of the branch pipe 322 is fitted with multiple sealing rings 324 and then inserted into the inside of the adapter pipe 313 to ensure the sealing of the connection. The bottom end of the dust guide pipe 32 is also connected to the guide cover 321. The dust collection assembly 4 consists of a centrifugal fan 41 and a filter element 42. The bottom end of the centrifugal fan 41 is fixed. The seat 415 is fixed to one side of the frame 1 by bolts passing through the fixing holes 416. The mounting ring 413 at the suction end of the centrifugal fan 41 is threadedly connected to the mounting connector 423 of the filter element 42. A limiting ring 422 is provided at the position where the filter element 42 fits against the mounting ring 413. The threaded adapter 421 on the side of the limiting ring 422 without the mounting connector 423 is threadedly connected to the guide cover 321 of the dust guide pipe 32. The bottom end of the connecting wire 411 on the side of the centrifugal fan 41 is provided with a power plug 412, which can be inserted into the power socket 191 of the mounting plate 19 of the frame 1. When the centrifugal fan 41 is in operation, the resulting adsorption force is transmitted sequentially through the filter element 42, guide cover 321, and dust guide pipe 32 to the two dust guide rollers 31. When the battery electrode passes between the two dust guide rollers 31, the dust attached to both sides is quickly adsorbed, achieving efficient dust removal and preventing dust from being pressed onto the battery electrode during subsequent rolling processes, thus affecting product quality. The exhaust port 414 at the bottom side of the centrifugal fan 41 is used to discharge the adsorbed dust-laden gas, while the filter element 42 can also filter the dust, facilitating subsequent cleaning and maintenance.

[0024] like Figure 1 , Figure 2 , Figure 9 and Figure 10As shown, a drive roller assembly 5 and a pressure roller assembly 6 are respectively installed at the bottom and top of the inner side of the support frame 15, and the two are aligned to complete the rolling operation of the battery electrode sheets. The drive roller assembly 5 consists of a drive roller body 51, a drive motor 52, and a chain 53. The connecting shafts 511 at both ends of the drive roller body 51 are rotatably connected to the bearing seats 512. A transmission joint 513 is provided at the end of the drive roller body 51 near the drive motor 52. The first sprocket 514 on the transmission joint 513 is connected to the second sprocket 521 at the output end of the drive motor 52 through the chain 53. The connecting foot 522 at the bottom of the drive motor 52 is fixed to the frame 1 by bolts passing through the connecting hole 523. When the drive motor 52 operates, it drives the drive roller body 51 to rotate through the transmission action of the chain 53, providing continuous power for the movement and conveying of the battery electrode sheets. The pressure roller assembly 6 consists of a pressure roller body 61, a guide joint 52, a drive roller body 51, a guide joint 52, a drive roller body 51, a drive roller body 52 ... The device consists of a head 62 and a cylinder 63. The positioning foot 631 at the bottom of the cylinder 63 is fixed to the support plate 16 of the support frame 15 by bolts passing through the positioning hole 632. The bottom of the telescopic rod 633 at the output end of the cylinder 63 is provided with a connecting post 634. The connecting post 634 is threadedly connected to the connecting groove 623 of the connecting head 622 at the top of the guide joint 62. The third bearing 621 in the middle of the guide joint 62 is interference-fitted with the shafts 611 at both ends of the pressure roller body 61. The locking ports 620 on both sides of the guide joint 62 are engaged with the guide protrusions 153 of the support frame 15, ensuring that the guide joint 62 can move stably up and down along the guide protrusions 153. When the cylinder 63 operates, it can drive the telescopic rod 633 to extend and retract, thereby driving the pressure roller body 61 to adjust up and down, realizing the adjustment of the gap between the pressure roller body 61 and the drive roller body 51, thereby adjusting the rolling pressure to adapt to the rolling processing of battery electrode sheets with different thickness requirements.

[0025] like Figure 1 , Figure 2 and Figure 11As shown, a laser thickness measuring component 7 is provided on each side of the drive roller assembly 5, used to detect the thickness of the battery electrode sheet before and after roller pressing, respectively. The laser thickness measuring component 7 consists of a first laser displacement sensor 71 and a second laser displacement sensor 72. The sleeve 711 on the top of the first laser displacement sensor 71 is sleeved on the connecting rod 17 between the two support frames 15 through the sleeve hole 712. The clamping knob 713 on the sleeve 711 can fix the position of the first laser displacement sensor 71. The operator can flexibly adjust its position according to the actual detection needs. The laser displacement sensor 72 is fixed to the control box 14 through the first bolt holes 722 of the mounting feet 721 at both ends. The second laser displacement sensor 72 is aligned with the first laser displacement sensor 71. The battery electrode passes between the two to complete the accurate detection of thickness. The connecting wires 723 on the sides of the first laser displacement sensor 71 and the second laser displacement sensor 72 are provided with connecting plugs 724, which can be inserted into the connecting slots 141 of the control box 14 to realize electrical connection with the control box 14 and transmit the detected thickness data to the control box 14 in real time.

[0026] like Figure 1 , Figure 2 and Figure 5 As shown, the control box 14 contains a control module, which is a PLC controller connected to a data processing module, a control module, and an alarm module. The battery electrode thickness data before and after rolling transmitted by the laser thickness measuring component 7 enters the data processing module. The data processing module calculates the two sets of data to obtain the thickness deviation value and determines whether the deviation value exceeds the preset allowable range. The control module generates corresponding control signals based on the magnitude and direction of the thickness deviation to dynamically adjust the rolling parameters. If the battery electrode thickness detected after rolling is greater than the preset threshold, the control module controls the cylinder 63 of the pressure roller component 6 to retract, reducing the gap between the pressure roller body 61 and the drive roller body 51, and increasing the rolling pressure. If the battery electrode thickness detected after rolling is less than the preset threshold, the control module controls the cylinder 63 to extend, increasing the gap between the two and reducing the rolling pressure. Meanwhile, the control module can also pre-adjust based on the battery electrode thickness data detected before rolling, adjusting the rolling parameters in advance to reduce thickness deviation from the source. This achieves dual closed-loop control of pre-adjustment and real-time adjustment. If the thickness deviation exceeds the preset allowable range, the alarm module will promptly issue an alarm, reminding staff to check and handle the equipment in a timely manner, effectively ensuring the rolling thickness accuracy of the battery electrodes and improving product processing quality. In addition, the laser thickness measuring component 7, dust collection component 4, drive roller component 5, and pressure roller component 6 are all electrically connected to the control box 14, which centrally controls their start-up, shutdown, and operation, ensuring the coordination and automation of the entire equipment operation.

[0027] Example 2 like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, the polymer soft-pack battery electrode rolling equipment with thickness closed-loop detection disclosed in this embodiment has an overall frame 1 as the basic support structure. Support feet 10 are provided at the corners of the bottom surface of the frame 1. Side plates 11 are symmetrically installed on both sides of the frame 1. The two side plates 11 are connected by reinforcing rods 12 to improve the overall structural stability of the frame 1. Multiple guide rollers 13 are arranged between the two side plates 11 at one end of the frame 1 to provide guidance for the initial conveying of the battery electrode. A control box 14 is installed at the other end of the frame 1. Support frames 15 are symmetrically fixed at the front and rear ends of the upper surface of the control box 14. The tops of the two support frames 15 are connected by connecting rods 17. A pair of guide rails 18 are also provided at the bottom inner side of the frame 1. The side plates 11 on both sides of the frame 1 have through holes 112 corresponding to the positions of the dust guide components 3. A mounting plate 19 is fixed on one side of the frame 1 corresponding to the position of the dust suction components 4. The power connection slot 191 opened on the mounting plate 19 can realize the electrical connection between the dust suction components 4 and the frame 1. The control box 14 has a connecting slot 141 on the top, the support frame 15 has a mounting hole 151 at the bottom, a guide opening 152 on the top, and guide protrusions 153 are symmetrically arranged on both sides of the guide opening 152. The support frame 15 also has a support plate 16 fixed on the top. The through hole 161 in the middle of the support plate 16 provides space for the installation and operation of the pressure roller assembly 6, laying the foundation for the assembly of various components of the entire equipment.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, two symmetrically arranged limiting components 2 are installed on the guide rail 18 of the frame 1. The bottom end of the limiting component 2 is engaged with the guide rail 18, and the side of the limiting component 2 facing the frame 1 is threadedly connected to the threaded holes 111 opened in the middle of the guide rail 18 at the front and rear ends of the frame 1. The limiting component 2 consists of a limiting frame 21 and a drive screw 22. The bottom of the limiting frame 21 has symmetrically arranged notches 215 on both sides, and the sliders 216 arranged on both sides of the bottom surface are engaged with the guide rail 18 through the sliding openings 217 at the bottom, so as to realize the sliding guidance of the limiting frame 21 along the guide rail 18. The middle of the side of the limiting frame 21 facing the frame 1 has an adapter 213. The first... A bearing 214 is interference-fitted to an adapter shaft 221 at one end of a drive screw 22. A rotary handle 222 is provided at the other end of the drive screw 22. When the operator rotates the rotary handle 222, the limiting frame 21 can slide along the guide rail 18, thereby adjusting the distance between the two limiting frames 21. Multiple mounting seats 211 are evenly distributed on the opposite side of the two limiting frames 21. Limiting rollers 212 are rotatably connected to the mounting seats 211. The battery electrode passes through the limiting rollers 212 between the two limiting frames 21. By adjusting the distance of the limiting components 2, it can adapt to the conveying of battery electrode of different widths, effectively preventing the battery electrode from shifting during the conveying process and ensuring the stability of the conveying.

[0029] like Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, a dust guiding assembly 3 is installed inside the frame 1, and a dust suction assembly 4 connected to the dust guiding assembly 3 is installed on one side of the frame 1. The two work together to achieve double-sided dust removal of the battery electrode sheets. The dust guiding assembly 3 consists of two dust guiding rollers 31 and a dust guiding tube 32. A gap is reserved between the two dust guiding rollers 31 for the battery electrode sheets to pass through. Suction holes 311 are evenly arranged on the surface of the dust guiding rollers 31. The suction force of the dust suction assembly 4 can be applied to the surface of the battery electrode sheets through the suction holes 311. A second bearing 312 is provided at the middle of both ends of the dust guiding rollers 31. The bearing 312 is rotatably connected to the adapter pipe 313. The flange 314 at the end of the adapter pipe 313 is fixed to the inside of the frame 1 by bolts passing through the flange hole 315. The dust guide pipe 32 is provided with branch pipes 322 at the positions corresponding to the two dust guide rollers 31. The insertion pipe 323 at the end of the branch pipe 322 is fitted with multiple sealing rings 324 and then inserted into the inside of the adapter pipe 313 to ensure the sealing of the connection. The bottom end of the dust guide pipe 32 is also connected to the guide cover 321. The dust collection assembly 4 consists of a centrifugal fan 41 and a filter element 42. The bottom end of the centrifugal fan 41 is fixed. The seat 415 is fixed to one side of the frame 1 by bolts passing through the fixing holes 416. The mounting ring 413 at the suction end of the centrifugal fan 41 is threadedly connected to the mounting connector 423 of the filter element 42. A limiting ring 422 is provided at the position where the filter element 42 fits against the mounting ring 413. The threaded adapter 421 on the side of the limiting ring 422 without the mounting connector 423 is threadedly connected to the guide cover 321 of the dust guide pipe 32. The bottom end of the connecting wire 411 on the side of the centrifugal fan 41 is provided with a power plug 412, which can be inserted into the power socket 191 of the mounting plate 19 of the frame 1. When the centrifugal fan 41 is in operation, the resulting adsorption force is transmitted sequentially through the filter element 42, guide cover 321, and dust guide pipe 32 to the two dust guide rollers 31. When the battery electrode passes between the two dust guide rollers 31, the dust attached to both sides is quickly adsorbed, achieving efficient dust removal and preventing dust from being pressed onto the battery electrode during subsequent rolling processes, thus affecting product quality. The exhaust port 414 at the bottom side of the centrifugal fan 41 is used to discharge the adsorbed dust-laden gas, while the filter element 42 can also filter the dust, facilitating subsequent cleaning and maintenance.

[0030] like Figure 1 , Figure 2 , Figure 9 and Figure 10As shown, a drive roller assembly 5 and a pressure roller assembly 6 are respectively installed at the bottom and top of the inner side of the support frame 15, and the two are aligned to complete the rolling operation of the battery electrode sheets. The drive roller assembly 5 consists of a drive roller body 51, a drive motor 52, and a chain 53. The connecting shafts 511 at both ends of the drive roller body 51 are rotatably connected to the bearing seats 512. A transmission joint 513 is provided at the end of the drive roller body 51 near the drive motor 52. The first sprocket 514 on the transmission joint 513 is connected to the second sprocket 521 at the output end of the drive motor 52 through the chain 53. The connecting foot 522 at the bottom of the drive motor 52 is fixed to the frame 1 by bolts passing through the connecting hole 523. When the drive motor 52 operates, it drives the drive roller body 51 to rotate through the transmission action of the chain 53, providing continuous power for the movement and conveying of the battery electrode sheets. The pressure roller assembly 6 consists of a pressure roller body 61, a guide joint 52, a drive roller body 51, a guide joint 52, a drive roller body 51, a drive roller body 52 ... The device consists of a head 62 and a cylinder 63. The positioning foot 631 at the bottom of the cylinder 63 is fixed to the support plate 16 of the support frame 15 by bolts passing through the positioning hole 632. The bottom of the telescopic rod 633 at the output end of the cylinder 63 is provided with a connecting post 634. The connecting post 634 is threadedly connected to the connecting groove 623 of the connecting head 622 at the top of the guide joint 62. The third bearing 621 in the middle of the guide joint 62 is interference-fitted with the shafts 611 at both ends of the pressure roller body 61. The locking ports 620 on both sides of the guide joint 62 are engaged with the guide protrusions 153 of the support frame 15, ensuring that the guide joint 62 can move stably up and down along the guide protrusions 153. When the cylinder 63 operates, it can drive the telescopic rod 633 to extend and retract, thereby driving the pressure roller body 61 to adjust up and down, realizing the adjustment of the gap between the pressure roller body 61 and the drive roller body 51, thereby adjusting the rolling pressure to adapt to the rolling processing of battery electrode sheets with different thickness requirements.

[0031] like Figure 1 , Figure 2 and Figure 11As shown, a laser thickness measuring component 7 is provided on each side of the drive roller assembly 5, used to detect the thickness of the battery electrode sheet before and after roller pressing, respectively. The laser thickness measuring component 7 consists of a first laser displacement sensor 71 and a second laser displacement sensor 72. The sleeve 711 on the top of the first laser displacement sensor 71 is sleeved on the connecting rod 17 between the two support frames 15 through the sleeve hole 712. The clamping knob 713 on the sleeve 711 can fix the position of the first laser displacement sensor 71. The operator can flexibly adjust its position according to the actual detection needs. The laser displacement sensor 72 is fixed to the control box 14 through the first bolt holes 722 of the mounting feet 721 at both ends. The second laser displacement sensor 72 is aligned with the first laser displacement sensor 71. The battery electrode passes between the two to complete the accurate detection of thickness. The connecting wires 723 on the sides of the first laser displacement sensor 71 and the second laser displacement sensor 72 are provided with connecting plugs 724, which can be inserted into the connecting slots 141 of the control box 14 to realize electrical connection with the control box 14 and transmit the detected thickness data to the control box 14 in real time.

[0032] like Figure 1 , Figure 2 and Figure 12 As shown, a guide frame 8 is also installed between the dust guide assembly 3 and the drive roller assembly 5. The mounting bracket 82 at the bottom of the guide frame 8 is fixed to the frame 1 by bolts passing through the second bolt hole 83. Multiple support rollers 81 arranged in a row are arranged on the top of the guide frame 8. The row of support rollers 81 is inclined. The support rollers 81 near the drive roller assembly 5 are higher than the support rollers 81 near the dust guide assembly 3, so that the battery electrode sheets after dust removal can enter the rolling area between the drive roller body 51 and the pressure roller body 61 smoothly and steadily, further improving the stability of battery electrode sheet conveying.

[0033] like Figure 1 , Figure 2 and Figure 5As shown, the control box 14 contains a control module, which is a PLC controller connected to a data processing module, a control module, and an alarm module. The battery electrode thickness data before and after rolling transmitted by the laser thickness measuring component 7 enters the data processing module. The data processing module calculates the two sets of data to obtain the thickness deviation value and determines whether the deviation value exceeds the preset allowable range. The control module generates corresponding control signals based on the magnitude and direction of the thickness deviation to dynamically adjust the rolling parameters. If the battery electrode thickness detected after rolling is greater than the preset threshold, the control module controls the cylinder 63 of the pressure roller component 6 to retract, reducing the gap between the pressure roller body 61 and the drive roller body 51, and increasing the rolling pressure. If the battery electrode thickness detected after rolling is less than the preset threshold, the control module controls the cylinder 63 to extend, increasing the gap between the two and reducing the rolling pressure. Meanwhile, the control module can also pre-adjust based on the battery electrode thickness data detected before rolling, adjusting the rolling parameters in advance to reduce thickness deviation from the source. This achieves dual closed-loop control of pre-adjustment and real-time adjustment. If the thickness deviation exceeds the preset allowable range, the alarm module will promptly issue an alarm, reminding staff to check and handle the equipment in a timely manner, effectively ensuring the rolling thickness accuracy of the battery electrodes and improving product processing quality. In addition, the laser thickness measuring component 7, dust collection component 4, drive roller component 5, and pressure roller component 6 are all electrically connected to the control box 14, which centrally controls their start-up, shutdown, and operation, ensuring the coordination and automation of the entire equipment operation.

[0034] The dual closed-loop control method, which combines pre-regulation and real-time regulation, is described in order of execution as follows: S100. After the equipment is started, the laser thickness measuring components 7 on both sides of the drive roller assembly 5 are turned on simultaneously. The laser thickness measuring components 7 before rolling detect the thickness of the battery electrode sheet that is about to enter the rolling area and transmit the detected raw thickness data to the PLC controller of the control box 14 in real time.

[0035] The S200 and PLC controller's control module receives the original electrode thickness data, combines it with the pre-set rolling target thickness, calculates parameters, and generates rolling parameter control signals in advance.

[0036] S300, the control signal is transmitted to the pressure roller assembly 6, which controls the extension and retraction of the cylinder 63, pre-adjusts the gap size between the pressure roller body 61 and the drive roller body 51, and completes the pre-adjustment setting of the roller pressing parameters, reducing thickness deviation from the source.

[0037] S400, the drive roller assembly 5 operates to drive the battery electrode into the rolling area, and the pressure roller assembly 6 performs rolling operation on the battery electrode according to the pre-controlled parameters.

[0038] The S500 and the laser thickness measurement component 7 after rolling perform thickness detection on the rolled battery electrode sheets and transmit the actual thickness data to the PLC controller in real time.

[0039] The data processing module of the S600 and PLC controller receives the original thickness data before rolling and the actual thickness data after rolling, calculates the deviation between the two and the preset thickness threshold, and determines whether the deviation exceeds the preset allowable range.

[0040] S700: The control module generates a dynamic control signal based on the magnitude and direction of the thickness deviation, and transmits it to the pressure roller assembly 6 for real-time adjustment: if the actual thickness is greater than the preset threshold, the control cylinder 63 contracts to reduce the gap between the pressure roller and the drive roller and increase the roller pressure; if the actual thickness is less than the preset threshold, the control cylinder 63 extends to increase the gap between the pressure roller and the drive roller and decrease the roller pressure.

[0041] S800 If the data processing module determines that the thickness deviation exceeds the preset allowable range, the alarm module of the PLC controller will immediately issue an alarm prompt to remind the staff to check and handle the equipment.

[0042] S900, the above-mentioned steps of pre-control, rolling, real-time detection, and dynamic adjustment are continuously cycled to achieve dual closed-loop control of the thickness of the battery electrode rolling until the equipment stops operating.

[0043] Working principle: The equipment is supported by an overall frame 1. The battery electrode sheets are first initially conveyed and guided by the guide roller 13 at one end of the frame 1. Then, the limiting components 2 on the guide rail 18 of the frame 1 are used by the operator to adjust the distance between the two limiting frames 21 by rotating the rotary handle 222 to accommodate electrode sheets of different widths and to prevent them from being conveyed off-center by the limiting rollers 212. Subsequently, the electrode sheets pass between the two dust guide rollers 31 of the dust guide component 3. The dust suction component 4 on one side of the frame 1 operates to generate suction force, which is transferred through the filter element 42, guide cover 321, and dust guide tube 32 to the dust guide rollers 31, realizing double-sided dust removal of the electrode sheets and avoiding dust from affecting the surface. To ensure the quality of subsequent rolling, the dust-removed electrode sheets are guided smoothly into the rolling area by the inclined support rollers 81 of the guide frame 8 between the dust guide assembly 3 and the drive roller assembly 5. The drive roller assembly 5, located inside the support frame 15 of the frame 1, is driven by the drive motor 52 through the chain 53 to rotate the drive roller body 51, providing continuous power for the moving and conveying of the electrode sheets. The pressure roller assembly 6 is driven by the cylinder 63 to extend and retract the telescopic rod 633, realizing the up and down adjustment of the pressure roller body 61. This adjusts the gap between the pressure roller body 61 and the drive roller body 51 and regulates the rolling pressure. At the same time, the laser thickness measuring components on both sides of the drive roller assembly 5... 7. The electrode thickness before and after rolling is accurately measured, and the thickness data is transmitted in real time to the control box 14 at the other end of the frame 1 via the connecting line 723. After receiving the data, the control module with PLC controller as its core in the control box 14 calculates the thickness deviation value and determines whether it exceeds the preset allowable range. The control module generates control signals based on the magnitude and direction of the deviation value to dynamically adjust the rolling parameters. If the electrode thickness after rolling is greater than the preset threshold, the cylinder 63 is controlled to contract to reduce the rolling gap and increase the rolling pressure. If it is less than the preset threshold, the cylinder 63 is controlled to extend to increase the rolling pressure. The control module reduces gaps and roller pressure, and can also pre-adjust based on the thickness data before rolling to reduce thickness deviation from the source, achieving dual closed-loop control of thickness with "pre-adjustment + real-time adjustment". If the thickness deviation exceeds the preset range, the alarm module will issue an alarm prompt in time to remind the staff to check and deal with it. In addition, the control box 14 is also electrically connected to the laser thickness measuring component 7, the dust collection component 4, the drive roller component 5 and the pressure roller component 6 to uniformly start, stop and operate each component, ensuring the coordination and automation of equipment operation, and finally completing the high-precision rolling processing of polymer soft-pack battery electrode sheets.

[0044] In summary, compared with the prior art, this application, by setting a dust guiding component 3 and a dust suction component 4 on the frame 1, can effectively remove dust from the surface of the battery electrode sheets, thus preventing dust from being pressed onto the battery electrode sheets. The drive roller component 5, in conjunction with the roller component, can apply pressure to the battery electrode sheets, facilitating the pressing of the battery electrode sheets to a preset thickness. The pressure roller component 6 can be adjusted up and down according to usage requirements, making it easy to press out battery electrode sheets of different thicknesses. At the same time, both the drive roller component 5 and the pressure roller component 6 are equipped with a pair of laser thickness measuring components 7 at their front and rear ends. The laser thickness measuring components 7 can measure the battery electrode sheets before and after rolling to determine whether the thickness of the battery electrode sheets meets the preset requirements. If the thickness of the battery electrode sheets does not meet the preset thickness, the pressure roller component 6 can be adjusted up and down to achieve dynamic adjustment of the rolling pressure of the battery electrode sheets, ensuring that the thickness of the battery electrode sheets meets the processing requirements. Limiting components 2 are symmetrically arranged on both sides of the frame 1. By adjusting the position of the limiting components 2, the entire rolling equipment can transport battery electrode sheets of different widths, facilitating stable transport of the battery electrode sheets and preventing them from shifting during transport. A guide frame 8 is arranged in front of the drive roller assembly 5, and multiple guide rollers 13 are arranged on the guide frame 8. The guide rollers 13 can stably transport and roll the battery electrode sheets.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A polymer soft-pack battery electrode rolling device with closed-loop thickness detection, characterized in that, include: A frame (1) is provided with multiple guide rollers (13) at one end of the frame (1) and a control box (14) at the other end of the frame (1). Support frames (15) are symmetrically arranged at the front and rear ends of the upper surface of the control box (14). Dust guiding assembly (3), which is disposed inside the frame (1) and is used to remove dust from both sides of the battery electrode simultaneously when the battery electrode passes through the middle of the dust guiding assembly (3); The dust collection component (4) is installed on one side of the frame (1), and the suction end of the dust collection component (4) is connected to the dust guide component (3). The suction force of the dust collection component (4) is transmitted to the dust guide component (3) to achieve the purpose of dust collection on both sides of the battery electrode. A drive roller assembly (5) is installed on the bottom inner side of the support frame (15) to drive the battery electrode sheets to move. A pressure roller assembly (6) is mounted on the top of the inner side of the support frame (15) and is aligned with the drive roller assembly (5). Laser thickness measuring component (7), two laser thickness measuring components (7) are provided, and the two laser thickness measuring components (7) are respectively provided on both sides of the drive roller assembly (5); the two laser thickness measuring components (7) are respectively used to measure the thickness of the battery electrode before rolling and the thickness of the battery electrode after rolling; the laser thickness measuring component (7), the dust collection component (4), the drive roller assembly (5) and the pressure roller assembly (6) are all electrically connected to the control box (14).

2. The polymer soft-pack battery electrode rolling equipment with closed-loop thickness detection according to claim 1, characterized in that, The frame (1) is provided with support feet (10) at the bottom corners. Side plates (11) are symmetrically arranged on both sides of the frame (1), and the two side plates (11) are connected by reinforcing rods (12). The guide roller (13) is arranged between the two side plates (11). The side plates (11) are provided with perforations (112) at the position aligned with the dust guide assembly (3). The top of the control box (14) is provided with a connecting slot (141), the bottom of the support frame (15) is provided with mounting holes (151), and the top of the support frame (15) is provided with... The guide opening (152) has guide protrusions (153) symmetrically arranged on both sides. The support frame (15) has a support plate (16) on the top. The support plate (16) has a through hole (161) in the middle. The two support frames (15) are connected at the top by a connecting rod (17). The frame (1) has a mounting plate (19) on one side aligned with the position of the dust collection component (4). The mounting plate (19) has an electrical connection slot (191) for electrically connecting the dust collection component (4) to the frame (1).

3. The polymer soft-pack battery electrode rolling equipment with closed-loop thickness detection according to claim 2, characterized in that, The control box (14) is equipped with a control module, which is a PLC controller. The PLC controller is connected to a data processing module, a control module, and an alarm module. The data processing module is used to receive the thickness data measured by the two laser thickness measuring components (7), calculate the thickness deviation, and determine whether the deviation exceeds the preset allowable range. The control module is used to generate corresponding control signals according to the magnitude and direction of the thickness deviation. If the thickness detected by the exit detection component is greater than the preset threshold, the pressure roller component (6) reduces the gap between the roller drive roller component (5) and the pressure roller component (6) to increase the roller pressure. If the thickness is less than the preset threshold, the gap between the drive roller component (5) and the pressure roller component (6) is increased to reduce the roller pressure. The control module is also used to perform pre-control based on the thickness data of the battery electrode before roller pressing, and adjust the roller pressing parameters in advance to form a dual closed-loop detection and control structure that combines pre-control and real-time control.

4. The polymer soft-pack battery electrode rolling equipment with closed-loop thickness detection according to claim 1, characterized in that, The dust guiding assembly (3) includes two dust guiding rollers (31) and a dust guiding tube (32). A gap is provided between the two dust guiding rollers (31). Suction holes (311) are evenly provided on the surface of the dust guiding rollers (31). A second bearing (312) is provided at the middle of both ends of the dust guiding rollers (31). The second bearings (312) are rotatably connected to a connecting pipe (313). A flange (314) is provided at the end of the connecting pipe (313). A plurality of flange holes (31) are provided on the flange (314). 5) The dust guide roller (31) is fixed to the inner side of the frame (1) by bolts through the flange holes (315) at both ends; the dust guide pipe (32) is provided with branch pipe (322) aligned with the two dust guide rollers (31), the end of the branch pipe (322) is provided with insertion pipe (323), the insertion pipe (323) is provided with multiple sealing rings (324), the insertion pipe (323) is inserted into the inner side of the transfer pipe (313); the bottom end of the dust guide pipe (32) is connected to the guide cover (321).

5. A polymer soft-pack battery electrode rolling device with closed-loop thickness detection according to claim 4, characterized in that, The dust collection assembly (4) includes a centrifugal fan (41) and a filter element (42). The centrifugal fan (41) has a mounting ring (413) at its suction end. The filter element (42) has a mounting connector (423) at one end facing the mounting ring (413). The middle part of the mounting connector (423) communicates with the inside of the filter element (42), and the mounting connector (423) is threadedly connected to the mounting ring (413). A limiting ring (422) is provided at the position where the filter element (42) fits against the mounting ring (413). A threaded adapter (423) is provided on the side of the limiting ring (422) where the mounting connector (423) is not provided. 21); The filter element (42) is inserted into the inside of the guide cover (321), and the threaded adapter (421) is threadedly connected to the guide cover (321); The centrifugal fan (41) is provided with a connecting wire (411) on the side, and the bottom end of the connecting wire (411) is provided with a power plug (412); The bottom side of the centrifugal fan (41) is provided with an exhaust port (414), and the bottom end of the centrifugal fan (41) is provided with a fixing seat (415), and the fixing seat (415) is provided with multiple fixing holes (416). The centrifugal fan (41) is fixed to one side of the frame (1) by bolts passing through the fixing holes (416).

6. The polymer soft-pack battery electrode rolling equipment with closed-loop thickness detection according to claim 1, characterized in that, The drive roller assembly (5) includes a drive roller body (51), a drive motor (52), and a chain (53); both ends of the drive roller body (51) are provided with connecting shafts (511), and the connecting shafts (511) are rotatably connected to bearing seats (512); and the drive roller body (51) is provided with a transmission joint (513) at one end near the drive motor (52), the transmission joint (513) is provided with a first sprocket (514), the output end of the drive motor (52) is provided with a second sprocket (521), the first sprocket (514) and the second sprocket (521) are connected by a chain (53); the bottom of the drive motor (52) is provided with a connecting foot (522), the connecting foot (522) is provided with multiple connecting holes (523), and the drive motor (52) is fixed to the frame (1) by bolts passing through the connecting holes (523).

7. A polymer soft-pack battery electrode rolling device with closed-loop thickness detection according to claim 2, characterized in that, The pressure roller assembly (6) includes a pressure roller body (61), a guide joint (62), and a cylinder (63); the pressure roller body (61) has shafts (611) at both ends, and the guide joint (62) has a third bearing (621) in the middle, which is interference-fitted with the shafts (611); the guide joint (62) has symmetrical locking ports (620) on both sides, which are used to lock onto the guide protrusion (153) to ensure stable up-and-down movement of the guide joint (62); and the guide joint (62) has a connecting rod at the top center. The connector (622) has a connecting groove (623) in the middle. The bottom end of the cylinder (63) is provided with a positioning foot (631) that is in contact with the support plate (16). The positioning foot (631) is provided with multiple positioning holes (632). The cylinder (63) is fixed to the support plate (16) by bolts passing through the positioning holes (632). The output end of the cylinder (63) is provided with a telescopic rod (633). The bottom end of the telescopic rod (633) is provided with a connecting post (634). The connecting post (634) is threadedly connected to the connecting groove (623).

8. A polymer soft-pack battery electrode rolling device with closed-loop thickness detection according to claim 2, characterized in that, The laser thickness-adjusting assembly includes a first laser displacement sensor (71) and a second laser displacement sensor (72). The first laser displacement sensor (71) has a socket (711) at its top, and a connecting hole (712) in the middle of the socket (711). The connecting hole (712) is fitted onto the connecting rod (17), and a clamping knob (713) is provided at the top of the socket (711) to fix the position of the first laser displacement sensor (71). The second laser displacement sensor (72) is mounted on the control box (14). (72) Both ends are provided with mounting feet (721), and the mounting feet (721) are provided with first bolt holes (722). The first laser displacement sensor (71) and the second laser displacement sensor (72) are both provided with connecting lines (723) on their sides. The ends of the connecting lines (723) are provided with connecting plugs (724). The connecting plugs (724) are electrically connected to the control box (14). The second laser displacement sensor (72) is aligned with the first laser displacement sensor (71), and the battery electrode passes between the first laser displacement sensor (71) and the second laser displacement sensor (72).

9. A polymer soft-pack battery electrode rolling device with closed-loop thickness detection according to any one of claims 1-8, characterized in that, It also includes a limiting component (2). A pair of guide rails (18) are provided on the bottom inner side of the frame (1). Threaded holes (111) are provided at the front and rear ends of the frame (1) aligned with the middle of the two guide rails (18). There are two limiting components (2). The two limiting components (2) are symmetrically arranged on the inner side of the frame (1). The bottom end of the limiting component (2) is engaged on the guide rail (18), and the side of the limiting component (2) facing the frame (1) is threadedly connected to the threaded hole (111).

10. A polymer soft-pack battery electrode rolling device with closed-loop thickness detection according to claim 9, characterized in that, The limiting assembly (2) includes a limiting frame (21) and a drive screw (22). Multiple mounting seats (211) are provided on opposite sides of the two limiting frames (21). A limiting roller (212) is rotatably connected to each mounting seat (211). The bottom of each limiting frame (21) has symmetrically arranged notches (215). Slider blocks (216) are aligned on both sides of the bottom surface of each limiting frame (21). The bottom of each slider (216) has a sliding opening (217). (217) Engaged on the guide rail (18); the limiting frame (21) has an adapter (213) in the middle of one side facing the frame (1), the adapter (213) has a first bearing (214) in the middle, the drive screw (22) has an adapter shaft (221) at one end facing the limiting frame (21), the adapter shaft (221) is interference-connected with the first bearing (214); the drive screw (22) has a rotating handle (222) at one end facing outward.

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