Composite polymer solid-state battery cell coiling device

Abstract

The invention discloses a composite polymer solid-state battery cell coiling device, which relates to the technical field of solid-state battery cell coiling, and comprises a base, a rack fixedly connected to the outer wall of the top of the base, and a frame fixedly connected to the side wall of the base, an unwinding mechanism, a tension adjusting mechanism, a deviation rectifying and guiding mechanism, a pre-pressing and smoothing mechanism and a winding mechanism are sequentially arranged on the base. The pre-pressing and smoothing mechanism and the belleville spring provide elastic pressure, so that the upper pressing roller can float up and down within a certain range to adapt to laminated materials with different thicknesses and automatically compensate pressure fluctuation caused by thickness changes, and a stepping motor drives a gear to rotate forwards and backwards to promote a rack to reciprocate, so that the thickness of the laminated materials is adjusted. And the rack drives the reciprocating moving frame to do small-amplitude reciprocating motion along the linear guide rail, and the upper pressing roller performs reciprocating flattening on the coiled material, air between layers is removed, wrinkles are flattened, and therefore the production quality of the composite polymer solid-state battery cell is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of solid-state battery cell winding technology, and in particular to a composite polymer solid-state battery cell winding device. Background Technology

[0002] With the development of new energy technologies, solid-state batteries have become a research hotspot due to their advantages such as high energy density and high safety. Composite polymer solid-state batteries combine the flexibility of polymer electrolytes with the stability of inorganic solid-state electrolytes, and have broad application prospects.

[0003] In the preparation of composite polymer solid-state batteries, cell winding is a key process. Its purpose is to tightly and uniformly wind the positive electrode, negative electrode and solid electrolyte membrane (usually a multi-layer composite structure) into a cell and then uniformly wind it up through a winding mechanism.

[0004] A search revealed that patent CN213124521U discloses a composite polymer solid-state battery cell winding device, which includes a composite roller assembly, a height adjustment component, a mounting base plate, and an adjustable support. The mounting base plate has four mounting through holes at its four corners, with internal threads on the inner side of each hole. The adjustable support is bolted to the upper surface of the mounting base plate, and the composite roller assembly is mounted on the adjustable support. This composite polymer solid-state battery cell winding device can press the negative electrode sheet and two layers of solid electrolyte membrane together using the composite roller assembly, resulting in better winding performance and providing convenience. However, the following problems may arise during actual operation: Firstly, traditional roll-formed components have a simple structure. Because the extrusion gap between the upper and lower rollers is fixed, wrinkles or air bubbles are easily generated during the winding process, especially for thicker composite solid electrolyte membranes. This makes it difficult to effectively remove interlayer air and prevent wrinkles. Secondly, the lack of an effective correction mechanism makes it impossible to ensure the precise positioning of the positive electrode, negative electrode, and solid electrolyte membrane before entering the winding process. This results in a serious misalignment between the relative positions of the positive and negative electrode and the solid electrolyte membrane, affecting subsequent packaging and electrochemical performance. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a composite polymer solid-state battery cell winding device, which effectively solves the problem that wrinkles or bubbles are easily generated during the winding process in existing technologies, especially for thick composite solid electrolyte films, making it difficult to effectively remove interlayer air and prevent wrinkles. Furthermore, it also solves the problem that existing technologies lack an effective correction mechanism, which cannot ensure the precise position of the positive electrode, negative electrode, and solid electrolyte film before entering the winding process, resulting in a serious misalignment of the relative positions of the positive and negative electrode and the solid electrolyte film, affecting subsequent packaging and electrochemical performance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A composite polymer solid-state battery cell winding device includes a base, a frame fixedly connected to the top outer wall of the base, and a frame fixedly connected to the side wall of the base. The base is provided with an unwinding mechanism, a tension adjustment mechanism, a deviation correction and guiding mechanism, a pre-compression and smoothing mechanism, and a winding mechanism in sequence. The top outer wall of the frame is fixedly installed with a first controller, the rear outer wall of the frame is fixedly installed with a second controller, and the unwinding mechanism includes an unwinding synchronous drive assembly and three unwinding rollers that are sequentially rotated and installed in the frame. The unwinding synchronous drive assembly includes a fixed cover fixedly connected to the rear outer wall of the frame, three worm gears sequentially fixedly fitted to the ends of the three unwinding rollers, a drive shaft rotatably installed inside the fixed cover, three worm gears sequentially fixedly fitted on the drive shaft, and an unwinding motor fixedly connected to the top outer wall of the fixed cover via a motor support plate. The correction and guidance mechanism includes a vision inspection component, a mounting groove on the top of the base, a bidirectional screw rotatably installed in the mounting groove, two moving blocks symmetrically screwed to the two opposite thread ends of the bidirectional screw, two vertical frames fixedly connected to the top outer wall of the two moving blocks in sequence, two correction rollers rotatably installed on the adjacent side of the two vertical frames in sequence, and a servo motor fixedly connected to the rear outer wall of the base through a motor mounting plate. The pre-compression and smoothing mechanism includes a roller assembly, a floating pressure roller assembly, and a smoothing assembly. The roller assembly includes a lower support fixedly connected to the inner wall of the bottom of the frame, a drive motor fixedly installed on the outer wall of the front side of the lower support, and a lower roller fixedly mounted on the output shaft of the drive motor. The floating pressure roller assembly includes an upper support, a second drive motor fixedly installed on the front outer wall of the upper support, an upper pressure roller fixedly mounted on the output shaft of the second drive motor, a reciprocating frame, and a row of disc springs installed between the upper support and the reciprocating frame and distributed at equal intervals.

[0007] As a preferred technical solution of the present invention, the three unwinding rollers are, from top to bottom, a positive electrode unwinding roller, a solid electrolyte membrane unwinding roller, and a negative electrode unwinding roller, and the three unwinding rollers are wound with positive electrode roll material, solid electrolyte membrane roll material and negative electrode roll material in sequence from top to bottom.

[0008] By adopting the above technical solution, it is convenient to release the positive electrode sheet roll, solid electrolyte membrane roll, and negative electrode sheet roll required for composite polymer solid-state battery cells.

[0009] As a preferred technical solution of the present invention, the three worm gears are respectively meshed with the three worm wheels, and the output shaft of the unwinding motor is coaxially and fixedly connected to the top end of the drive shaft through a coupling.

[0010] By adopting the above technical solution, the synchronous rotation of the three unwinding rollers is achieved, ensuring that the unwinding speed of the positive electrode sheet, solid electrolyte membrane and negative electrode sheet is consistent, improving the stability and consistency of unwinding, and avoiding material problems caused by differences in unwinding speed.

[0011] As a preferred technical solution of the present invention, the tension adjustment mechanism includes three tension adjustment components distributed at equal distances. The three tension adjustment components are used to independently adjust the tension of each roll of material. The tension adjustment components include a tension adjustment frame hinged to the front of the frame, a tension adjustment roller connected to the end of the tension adjustment frame via a bearing, a tension sensor installed at the end of the tension adjustment roller, and a hydraulic adjustment rod hinged to the front of the frame.

[0012] By adopting the above technical solution, three independent tension adjustment components are used for the rolls with different characteristics, which effectively prevents the stretching deformation, breakage or loosening of each material, and ensures the uniformity and stability of the winding tension, thus facilitating the production of high-density and compact battery cells.

[0013] As a preferred technical solution of the present invention, the three tension adjusting rollers respectively contact the surfaces of the positive electrode roll, the solid electrolyte membrane roll and the negative electrode roll, the telescopic ends of the three hydraulic adjusting rods are respectively hinged to the three tension adjusting frames, and the three hydraulic adjusting rods are all electrically connected to the first controller.

[0014] By adopting the above technical solution, during the unwinding process of the roll material, three tension sensors monitor the tension of each roll material in real time and transmit the signal to the first controller. The first controller controls the extension and retraction of the corresponding hydraulic adjustment rod according to the preset tension value, and adjusts the angle of the corresponding tension adjustment frame, thereby realizing the independent adjustment of the tension of each roll material.

[0015] As a preferred embodiment of the present invention, guide rollers are installed on the outer walls of both movable blocks, and a guide rail is fixedly connected to the top outer wall of the base, with both guide rollers forming a rolling engagement with the guide rail.

[0016] By adopting the above technical solution, the stability of the linear motion of the two moving blocks can be ensured through the cooperation between the two guide rollers and the guide rail. Moreover, the two are subjected to rolling friction, which has a small friction force and can ensure the smoothness of the correction action of the entire correction guide mechanism.

[0017] As a preferred technical solution of the present invention, two linear guide rails are symmetrically fixed on the inner side wall of the top of the frame, and two guide blocks are symmetrically welded on the outer side wall of the top of the reciprocating frame, and the two guide blocks are slidably connected to the two linear guide rails respectively.

[0018] By adopting the above technical solution, the stability of the reciprocating motion of the reciprocating frame can be guaranteed through the guiding cooperation between the two guide blocks and the two linear guide rails.

[0019] As a preferred technical solution of the present invention, the smoothing component includes a stepper motor fixedly installed on the inner side wall of the top of the frame, a gear fixedly mounted on the output shaft of the stepper motor, and a rack fixedly connected to the outer side wall of the top of the reciprocating frame and meshing with the gear.

[0020] By adopting the above technical solution, the reciprocating moving frame, driven by a stepper motor through gears and racks, reciprocates along a linear guide rail, driving the upper pressure roller to reciprocate and smooth the coiled material, effectively eliminating interlayer air, smoothing wrinkles on the surface of the coiled material, and improving the tightness and uniformity of winding.

[0021] As a preferred technical solution of the present invention, the winding mechanism includes a winding frame fixedly connected to the side wall of the frame, a winding motor fixedly installed on the front outer wall of the winding frame, and a winding roller fixedly mounted on the output shaft of the winding motor.

[0022] By adopting the above technical solution, the winding motor drives the winding roller to rotate, and the composite battery cell that has undergone pre-compression and smoothing treatment is wound onto the winding roller, so as to achieve stable winding of the battery cell, which is convenient for subsequent processing and storage.

[0023] As a preferred technical solution of the present invention, the visual inspection component includes a support base welded to the upper side wall of the frame and a visual sensor fixedly installed on the bottom outer wall of the support base.

[0024] By adopting the above technical solution, the vision sensor can accurately detect the edge position and state of the roll material, providing precise feedback information to the correction and guidance mechanism, and ensuring the accuracy and timeliness of correction.

[0025] The operation steps of this invention are as follows: First, start the unwinding motor. The unwinding motor drives three worm gears to rotate through the drive shaft. The worm gears mesh with the worm wheel, so that the three unwinding rollers rotate synchronously and release the positive electrode sheet roll, the solid electrolyte membrane roll, and the negative electrode sheet roll, respectively. The second step involves three tension sensors monitoring the tension of each roll in real time during the unwinding process and transmitting the signals to the first controller. The first controller controls the extension and retraction of the corresponding hydraulic adjustment rod according to the preset tension value, and adjusts the angle of the corresponding tension adjustment frame, thereby achieving independent adjustment of the tension of each roll and ensuring that the roll enters the subsequent process with appropriate tension. The third step involves a vision sensor detecting the edge position of the roll material in real time. When a misalignment is detected, a signal is transmitted to the second controller. The second controller then controls a servo motor to drive a bidirectional screw to rotate. The bidirectional screw drives two moving blocks along a guide rail, thereby adjusting the position of the two correction rollers to guide the roll material and keep it in the correct position. This allows for real-time and accurate correction of the roll material's position, ensuring that the positive electrode sheet, solid electrolyte membrane, and negative electrode sheet maintain accurate positions before entering the pre-compression and smoothing mechanism. This improves the winding quality and performance of the battery cell and avoids performance degradation caused by misalignment. The fourth step involves the guided roll material entering the pre-compression and smoothing mechanism. Drive motor one drives the lower support roller to rotate, providing support and conveying power for the roll material. At the same time, drive motor two drives the upper pressure roller to rotate. The disc spring provides elastic pressure, allowing the upper pressure roller to float up and down within a certain range to adapt to laminated materials of different thicknesses and automatically compensate for pressure fluctuations caused by thickness changes. The stepper motor drives the gear to rotate forward and backward, causing the rack to move back and forth. In turn, the rack drives the reciprocating frame to make small-amplitude reciprocating movements along the linear guide rail. The upper pressure roller then reciprocates and smooths the roll material, removing air between layers and smoothing out wrinkles. The fifth step involves the composite battery cell, after pre-compression and smoothing, being wound onto the winding roller by a winding motor, thus completing the entire battery cell winding process.

[0026] The beneficial effects of this invention are as follows: 1. The pre-compression and smoothing mechanism of this invention uses a disc spring to provide elastic pressure, allowing the upper pressure roller to float up and down within a certain range to adapt to laminated materials of different thicknesses and automatically compensate for pressure fluctuations caused by thickness changes. The stepper motor drives the gear to rotate in both directions to cause the rack to move back and forth. In turn, the rack drives the reciprocating frame to make small-amplitude reciprocating movements along the linear guide rail. As a result, the upper pressure roller reciprocates and smooths the roll material, removes air between layers, and smooths out wrinkles, thereby ensuring the production quality of the composite polymer solid-state battery cell. 2. This invention, through an independent correction and guidance mechanism and online visual monitoring of the visual inspection component, can accurately correct the position of the coil in real time, ensuring that the positive electrode sheet, solid electrolyte membrane and negative electrode sheet maintain the correct position before entering the pre-compression and smoothing mechanism, thereby improving the winding quality and performance of the battery cell and avoiding the situation of battery cell performance degradation or scrap due to misalignment. 3. The present invention employs three independent tension adjustment components for rolls with different characteristics, which effectively prevents the stretching deformation, breakage or loosening of each material, and ensures the uniformity and stability of the winding tension, thereby facilitating the production of high-density and compact battery cells. 4. This invention achieves synchronous rotation of the three unwinding rollers through the unwinding synchronization drive assembly, ensuring that the unwinding speed of the positive electrode sheet, solid electrolyte membrane and negative electrode sheet is consistent, improving the stability and consistency of unwinding, and avoiding material problems caused by differences in unwinding speed. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0028] Figure 1 This is a front-view three-dimensional structural diagram of a composite polymer solid-state battery cell winding device proposed in this invention. Figure 2 This is a rear-view three-dimensional structural diagram of a composite polymer solid-state battery cell winding device proposed in this invention. Figure 3 This is a three-dimensional enlarged structural diagram of the unwinding mechanism of a composite polymer solid-state battery cell winding device proposed in this invention; Figure 4 This is a schematic cross-sectional view of the vertical section of the fixing cover of the composite polymer solid-state battery cell winding device proposed in this invention; Figure 5 This is a three-dimensional structural diagram of the connection area between the correction and guidance mechanism and the pre-compression and smoothing mechanism of the composite polymer solid-state battery cell winding device proposed in this invention. Figure 6 This is a three-dimensional enlarged structural schematic diagram of the correction and guiding mechanism of a composite polymer solid-state battery cell winding device proposed in this invention; Figure 7 This is a side view of the pre-compression and smoothing mechanism of a composite polymer solid-state battery cell winding device proposed in this invention. Figure 8 This is a three-dimensional enlarged structural diagram of the pre-compression and smoothing mechanism of a composite polymer solid-state battery cell winding device proposed in this invention; Figure 9 This is a three-dimensional enlarged structural diagram of the area above the upper pressure roller of a composite polymer solid-state battery cell winding device proposed in this invention; Figure 10 This is a three-dimensional enlarged structural diagram of the smoothing component of a composite polymer solid-state battery cell winding device proposed in this invention.

[0029] In the diagram: 1. Base; 2. Frame; 3. Unwinding roller; 4. Worm gear; 5. Drive shaft; 6. Worm; 7. Unwinding motor; 8. Fixing cover; 9. Tension adjusting frame; 10. Tension adjusting roller; 11. Tension sensor; 12. Hydraulic adjusting rod; 13. First controller; 14. Mounting slot; 15. Bidirectional screw; 16. Moving block; 17. Vertical frame; 18. Correcting roller; 19. Servo motor; 20. Guide roller; 21. Guide rail; 22. Lower support; 23. Drive motor one; 24. Lower idler roller; 25. Upper support; 26. Drive motor two; 27. Upper pressure roller; 28. Reciprocating frame; 29. ​​Disc spring; 30. Stepper motor; 31. Gear; 32. Rack; 33. Linear guide rail; 34. Guide block; 35. Frame; 36. Second controller; 37. Rewinding frame; 38. Rewinding motor; 39. Rewinding roller; 40. Support base; 41. Vision sensor. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0034] Example 1, referring to Figure 2-4A composite polymer solid-state battery cell winding device includes a base 1, a frame 2 fixedly connected to the top outer wall of the base 1, and a frame 35 fixedly connected to the side wall of the base 1. The base 1 is provided with an unwinding mechanism, a tension adjustment mechanism, a deviation correction and guiding mechanism, a pre-compression and smoothing mechanism, and a winding mechanism in sequence. In this embodiment, a first controller 13 is fixedly installed on the top outer wall of the frame 2, and a second controller 36 is fixedly installed on the rear outer wall of the frame 35. The unwinding mechanism includes an unwinding synchronous drive assembly and three unwinding rollers 3 that are sequentially rotated and installed in the frame 2. Specifically, the unwinding synchronous drive assembly includes a fixed cover 8 fixedly connected to the rear outer wall of the frame 2, three worm gears 4 sequentially fixedly mounted on the ends of the three unwinding rollers 3, a drive shaft 5 rotatably installed inside the fixed cover 8, three worm gears 6 sequentially fixedly mounted on the drive shaft 5, and an unwinding motor 7 fixedly connected to the top outer wall of the fixed cover 8 through a motor support plate. As a further technical solution of this embodiment, the three unwinding rollers 3 are, from top to bottom, a positive electrode unwinding roller, a solid electrolyte membrane unwinding roller and a negative electrode unwinding roller, and the three unwinding rollers 3 are wound with positive electrode roll material, solid electrolyte membrane roll material and negative electrode roll material from top to bottom. As a further technical solution of this embodiment, the three worm gears 6 mesh with the three worm wheels 4 respectively, and the output shaft of the unwinding motor 7 is coaxially and fixedly connected to the top end of the drive shaft 5 through a coupling; Specifically, the tension adjustment mechanism includes three tension adjustment components that are evenly distributed. The three tension adjustment components are used to independently adjust the tension of each roll of material. The tension adjustment components include a tension adjustment frame 9 hinged to the front of the frame 2, a tension adjustment roller 10 connected to the end of the tension adjustment frame 9 via a bearing, a tension sensor 11 installed at the end of the tension adjustment roller 10, and a hydraulic adjustment rod 12 hinged to the front of the frame 2. As a further technical solution of this embodiment, the three tension adjusting rollers 10 are in contact with the surfaces of the positive electrode roll, the solid electrolyte membrane roll and the negative electrode roll respectively, the telescopic ends of the three hydraulic adjusting rods 12 are respectively hinged to the three tension adjusting frames 9, and the three hydraulic adjusting rods 12 are all electrically connected to the first controller 13. In this embodiment, the unwinding motor 7 is started, and the unwinding motor 7 drives three worm gears 6 to rotate via the drive shaft 5. The worm gears 6 mesh with the worm wheel 4, causing the three unwinding rollers 3 to rotate synchronously, releasing the positive electrode sheet roll, the solid electrolyte membrane roll, and the negative electrode sheet roll respectively. Secondly, during the unwinding process, three tension sensors 11 monitor the tension of each roll in real time and transmit the signal to the first controller 13. The first controller 13 controls the extension and retraction of the corresponding hydraulic adjusting rod 12 according to the preset tension value, and adjusts the angle of the corresponding tension adjusting frame 9, thereby realizing the independent adjustment of the tension of each roll and ensuring that the roll enters the subsequent process with appropriate tension.

[0035] Example 2, refer to Figure 2 , Figure 5 and Figure 6 This embodiment is an optimization based on embodiment 1. Specifically, it is a composite polymer solid-state battery cell winding device, including a base 1, a frame 2 fixedly connected to the top outer wall of the base 1, and a frame 35 fixedly connected to the side wall of the base 1. The base 1 is provided with an unwinding mechanism, a tension adjustment mechanism, a deviation correction and guiding mechanism, a pre-compression and smoothing mechanism, and a winding mechanism in sequence.

[0036] Specifically, the correction and guidance mechanism includes a vision inspection component, a mounting groove 14 on the top of the base 1, a bidirectional screw 15 rotatably mounted in the mounting groove 14, two moving blocks 16 symmetrically screwed to the two opposite threaded ends of the bidirectional screw 15, two vertical frames 17 sequentially fixedly connected to the top outer wall of the two moving blocks 16, two correction rollers 18 sequentially rotatably mounted on the adjacent side of the two vertical frames 17, and a servo motor 19 fixedly connected to the rear outer wall of the base 1 through a motor mounting plate. As a further technical solution of this embodiment, guide rollers 20 are installed on the outer walls of the two moving blocks 16, and guide rails 21 are fixedly connected to the top outer wall of the base 1. The two guide rollers 20 form a rolling engagement with the guide rails 21. Through the engagement between the two guide rollers 20 and the guide rails 21, the stability of the linear motion of the two moving blocks 16 can be guaranteed. Moreover, the two are rolling frictions with low friction force, which can ensure the smoothness of the correction action of the entire correction guide mechanism. As a further technical solution of this embodiment, the visual inspection component includes a support base 40 welded to the upper side wall of the frame 35 and a visual sensor 41 fixedly installed on the bottom outer wall of the support base 40. The visual sensor 41 and the servo motor 19 are both electrically connected to the second controller 36. In this embodiment, the vision sensor 41 detects the edge position of the roll material in real time. When a deviation in the roll material position is detected, a signal is transmitted to the second controller 36. The second controller 36 controls the servo motor 19 to drive the bidirectional screw 15 to rotate. The bidirectional screw 15 drives two moving blocks 16 to move along the guide rail 21, thereby adjusting the position of the two correction rollers 18 to correct and guide the roll material, keeping it in the correct position. In this way, the position of the roll material can be corrected accurately in real time, ensuring that the positive electrode sheet, solid electrolyte membrane and negative electrode sheet maintain the correct position before entering the pre-compression and smoothing mechanism. This improves the winding quality and performance of the battery cell and avoids the situation of battery cell performance degradation or scrap due to misalignment.

[0037] Example 3, referring to Figure 1 and Figure 7-10This embodiment is an optimization based on embodiment 1. Specifically, it is a composite polymer solid-state battery cell winding device, including a base 1, a frame 2 fixedly connected to the top outer wall of the base 1, and a frame 35 fixedly connected to the side wall of the base 1. The base 1 is provided with an unwinding mechanism, a tension adjustment mechanism, a deviation correction and guiding mechanism, a pre-compression and smoothing mechanism, and a winding mechanism in sequence.

[0038] Specifically, the pre-compression and smoothing mechanism includes a roller assembly, a floating pressure roller assembly, and a smoothing assembly, and the winding mechanism includes a winding frame 37 fixedly connected to the side wall of the frame 35, a winding motor 38 fixedly installed on the front outer wall of the winding frame 37, and a winding roller 39 fixedly mounted on the output shaft of the winding motor 38. As a further technical solution of this embodiment, the roller assembly includes a lower bracket 22 fixedly connected to the inner wall of the bottom of the frame 35, a drive motor 23 fixedly installed on the outer wall of the front side of the lower bracket 22, and a lower roller 24 fixedly mounted on the output shaft of the drive motor 23. As a further technical solution of this embodiment, the floating pressure roller assembly includes an upper support 25, a second drive motor 26 fixedly installed on the front outer wall of the upper support 25, an upper pressure roller 27 fixedly mounted on the output shaft of the second drive motor 26, a reciprocating frame 28, and a row of disc springs 29 installed between the upper support 25 and the reciprocating frame 28 and distributed at equal distances. As a further technical solution of this embodiment, two linear guide rails 33 are symmetrically fixed on the top inner sidewall of the frame 35, and two guide blocks 34 are symmetrically welded on the top outer sidewall of the reciprocating moving frame 28. The two guide blocks 34 are slidably connected to the two linear guide rails 33 respectively. As a further technical solution of this embodiment, the smoothing component includes a stepper motor 30 fixedly installed on the inner side wall of the top of the frame 35, a gear 31 fixedly mounted on the output shaft of the stepper motor 30, and a rack 32 fixedly connected to the outer side wall of the top of the reciprocating frame 28 and meshing with the gear 31. In this embodiment, the following steps are taken: First, the roll material guided by the correction mechanism enters the pre-compression and smoothing mechanism. Drive motor 23 drives the lower support roller 24 to rotate, providing support and conveying power for the roll material. At the same time, drive motor 26 drives the upper pressure roller 27 to rotate, and the disc spring 29 provides elastic pressure, allowing the upper pressure roller 27 to float up and down within a certain range to adapt to the thickness of the laminated material and automatically compensate for the pressure fluctuations caused by the thickness change. Stepper motor 30 drives gear 31 to rotate in both directions, causing rack 32 to move back and forth. Then, rack 32 drives reciprocating frame 28 to make small-amplitude reciprocating movements along linear guide rail 33. In turn, upper pressure roller 27 smooths the roll material back and forth, removing interlayer air and smoothing wrinkles. Second, the composite battery cell after pre-compression and smoothing is driven by take-up motor 38 to rotate take-up roller 39, winding the battery cell onto take-up roller 39, completing the entire battery cell winding process.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A composite polymer solid-state battery cell winding device, comprising a base (1), a frame (2) fixedly connected to the top outer wall of the base (1), and a frame (35) fixedly connected to the side wall of the base (1), characterized in that, The base (1) is provided with an unwinding mechanism, a tension adjustment mechanism, a deviation correction and guiding mechanism, a pre-compression and smoothing mechanism and a winding mechanism in sequence; The top outer wall of the frame (2) is fixedly installed with a first controller (13), and the rear outer wall of the frame (35) is fixedly installed with a second controller (36). The unwinding mechanism includes an unwinding synchronous drive assembly and three unwinding rollers (3) that are sequentially rotated and installed in the frame (2). The unwinding synchronous drive assembly includes a fixed cover (8) fixedly connected to the rear outer wall of the frame (2), three worm gears (4) fixedly mounted on the ends of the three unwinding rollers (3), a drive shaft (5) rotatably installed in the fixed cover (8), three worm gears (6) fixedly mounted on the drive shaft (5), and an unwinding motor (7) fixedly connected to the top outer wall of the fixed cover (8) through a motor support plate. The correction and guidance mechanism includes a vision inspection component, a mounting groove (14) opened on the top of the base (1), a bidirectional screw (15) rotatably installed in the mounting groove (14), two moving blocks (16) symmetrically screwed to the two opposite thread ends of the bidirectional screw (15), two vertical frames (17) fixedly connected to the top outer wall of the two moving blocks (16) in sequence, two correction rollers (18) rotatably installed on the adjacent side of the two vertical frames (17) in sequence, and a servo motor (19) fixedly connected to the rear outer wall of the base (1) through a motor mounting plate. The pre-compression and smoothing mechanism includes a roller assembly, a floating pressure roller assembly and a smoothing assembly. The roller assembly includes a lower support (22) fixedly connected to the inner wall of the bottom of the frame (35), a drive motor (23) fixedly installed on the outer wall of the front side of the lower support (22) and a lower roller (24) fixedly mounted on the output shaft of the drive motor (23). The floating pressure roller assembly includes an upper support (25), a second drive motor (26) fixedly installed on the front outer wall of the upper support (25), an upper pressure roller (27) fixedly mounted on the output shaft of the second drive motor (26), a reciprocating frame (28), and a row of disc springs (29) installed between the upper support (25) and the reciprocating frame (28) and distributed at equal distances.

2. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, The three unwinding rollers (3) are, from top to bottom, a positive electrode unwinding roller, a solid electrolyte membrane unwinding roller, and a negative electrode unwinding roller, and the three unwinding rollers (3) are wound with positive electrode rolls, solid electrolyte membrane rolls, and negative electrode rolls from top to bottom.

3. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, The three worms (6) mesh with the three worm wheels (4) respectively, and the output shaft of the unwinding motor (7) is coaxially and fixedly connected to the top end of the drive shaft (5) through a coupling.

4. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, The tension adjustment mechanism includes three tension adjustment components that are evenly distributed. The three tension adjustment components are used to independently adjust the tension of each roll of material. The tension adjustment components include a tension adjustment frame (9) hinged to the front of the frame (2), a tension adjustment roller (10) connected to the end of the tension adjustment frame (9) through a bearing, a tension sensor (11) installed at the end of the tension adjustment roller (10), and a hydraulic adjustment rod (12) hinged to the front of the frame (2).

5. The composite polymer solid-state battery cell winding device according to claim 4, characterized in that, The three tension adjustment rollers (10) are in contact with the surfaces of the positive electrode roll, the solid electrolyte membrane roll and the negative electrode roll, respectively. The telescopic ends of the three hydraulic adjustment rods (12) are hinged to the three tension adjustment frames (9), and the three hydraulic adjustment rods (12) are electrically connected to the first controller (13).

6. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, Guide rollers (20) are installed on the outer walls of the two movable blocks (16), and guide rails (21) are fixedly connected to the top outer wall of the base (1), and the two guide rollers (20) form a rolling engagement with the guide rails (21).

7. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, The top inner wall of the frame (35) is symmetrically fixed with two linear guide rails (33), and the top outer wall of the reciprocating frame (28) is symmetrically welded with two guide blocks (34), and the two guide blocks (34) are slidably connected to the two linear guide rails (33) respectively.

8. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, The smoothing assembly includes a stepper motor (30) fixedly mounted on the inner side wall of the top of the frame (35), a gear (31) fixedly mounted on the output shaft of the stepper motor (30), and a rack (32) fixedly connected to the outer side wall of the top of the reciprocating frame (28) and meshing with the gear (31).

9. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, The winding mechanism includes a winding frame (37) fixedly connected to the side wall of the frame (35), a winding motor (38) fixedly installed on the front outer wall of the winding frame (37), and a winding roller (39) fixedly mounted on the output shaft of the winding motor (38).

10. The composite polymer solid-state battery cell winding device according to claim 1, characterized in that, The visual inspection assembly includes a support (40) welded to the upper side wall of the frame (35) and a visual sensor (41) fixedly installed on the bottom outer wall of the support (40).

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