Soft package lithium battery packaging and film pasting all-in-one machine and film coating process thereof

Abstract

The invention relates to the technical field of soft package lithium battery manufacturing, in particular to a soft package lithium battery packaging and film pasting all-in-one machine and a film wrapping technology thereof.The soft package lithium battery packaging and film pasting all-in-one machine comprises a rack, a packaging mechanism and a film pasting mechanism, the packaging mechanism and the film pasting mechanism are arranged in the rack, and the film pasting mechanism comprises a film pasting platform, the film pasting mechanism and a limiting mechanism; the film pasting mechanism comprises an electric sliding rail fixedly arranged on the upper surface of the base and a sliding block arranged on the surface of the electric sliding rail in a sliding mode. By arranging the film pasting mechanism and the limiting mechanism, when the soft package lithium battery is subjected to film pasting, a film can be limited between the limiting roller and the film pasting roller through the limiting roller, finally, an electric sliding rail and a first motor are started, the electric sliding rail drives a sliding block, the film pasting roller and the limiting roller to move, and meanwhile the first motor drives the film pasting roller to rotate; the film can be gradually attached to the surface of the soft package lithium battery along with the movement of the film pasting roller and the limiting roller, the purpose of automatic high-quality film pasting is achieved, and then the film pasting quality is effectively guaranteed.

Description

Technical Field

[0001] This application relates to the field of soft-pack lithium battery manufacturing technology, and in particular to a soft-pack lithium battery encapsulation and coating integrated machine and its coating process. Background Technology

[0002] Soft-pack lithium batteries are a type of lithium-ion battery that uses an aluminum-plastic composite film encapsulation shell. They belong to the category of liquid lithium-ion batteries combined with polymer shells. Among them, the soft-pack lithium battery encapsulation and film application integrated machine is mainly used for the automated production of soft-pack lithium batteries. It integrates functions such as adhesive application, folding, and molding, and is suitable for the encapsulation process of polymer lithium batteries.

[0003] Currently, most existing integrated packaging and film-applying machines for soft-pack lithium batteries use a cylinder to drive a film-applying roller to move across the surface of the soft-pack lithium battery, automatically attaching the film. However, in practice, due to the film's inherent toughness, when the film-applying roller just contacts one end of the film, the other end of the film adheres to the surface of the soft-pack lithium battery. This can lead to problems such as air bubbles forming between the film and the battery surface, thus affecting the quality of the film application.

[0004] Therefore, this application provides an integrated machine for packaging and coating soft-pack lithium batteries and its coating process. Summary of the Invention

[0005] The purpose of this application is to solve at least one technical problem raised in the background art.

[0006] This application provides a soft-pack lithium battery encapsulation and film application integrated machine, including a frame, and an encapsulation mechanism and a film application mechanism respectively disposed inside the frame. The film application mechanism includes a film application platform, a film application mechanism and a limiting mechanism. The film application platform includes a base and a worktable disposed on the upper surface of the base; The film application mechanism includes an electric slide rail fixed to the upper surface of the base and a slider slidably disposed on the surface of the electric slide rail. An L-shaped mounting seat is fixed to the upper surface of the slider. A cylinder is fixed to the inner wall of the L-shaped mounting seat. A first mounting seat is fixed to the telescopic end of the cylinder. A first motor is fixed to the upper surface of the first mounting seat. A rotating shaft is fixed to the output end of the first motor, and a film application roller is fixed to the surface of the rotating shaft. The limiting mechanism includes a second mounting base fixed on the outer surface of the L-shaped mounting base, and a second motor fixed on the upper surface of the second mounting base. The output end of the second motor is fixed with an L-shaped connecting rod, and the end of the L-shaped connecting rod is fixed with a limiting roller. The surface of the limiting roller is fixed with two limiting blocks corresponding to the film-applying roller.

[0007] Preferably, the upper surface of the base is fixedly provided with three mounting rods, and the top of the three mounting rods is fixedly provided with a connecting platform. The surface of the connecting platform is embedded with four hydraulic rods in a rectangular array, and the telescopic ends of the four hydraulic rods are all fixedly connected to the lower surface of the worktable.

[0008] By adopting the above technical solution, the working height of the worktable can be automatically adjusted by using the hydraulic rod on the connecting platform.

[0009] Preferably, the upper surface of the workbench is provided with two sets of corresponding threaded mounting holes, and the upper surface of the workbench is provided with a limiting plate for positioning the soft-pack lithium battery. The upper surface of the limiting plate is provided with waist holes corresponding to the two sets of threaded mounting holes, and the inner walls of the two waist holes are provided with locking bolts that are threadedly connected to the inner walls of the threaded mounting holes.

[0010] By adopting the above technical solution, the soft-pack lithium battery placed on the workbench can be effectively limited by the limiting plate.

[0011] Preferably, the cross-sectional shape of the film-applying roller is elliptical, and the surface of the rotating shaft is provided with a positioning ring for positioning the film-applying roller.

[0012] By adopting the above technical solution, the film-applying roller can apply film to the soft-pack lithium battery more smoothly.

[0013] Preferably, the L-shaped mounting base is fixed to the upper surface of the slider by a first fixing bolt, and the cylinder is fixed to the inner wall of the L-shaped mounting base by a second fixing bolt.

[0014] By adopting the above technical solution, the slider can be moved automatically under the action of the cylinder.

[0015] Preferably, the upper surface of the worktable is provided with a positioning mechanism for positioning the soft-pack lithium battery.

[0016] By adopting the above technical solution, the soft-pack lithium battery can be effectively fixed, thereby ensuring the stability of the soft-pack lithium battery during film application.

[0017] Preferably, the positioning mechanism includes a rectangular groove formed on the upper surface of the worktable and a rectangular positioning plate disposed on the inner wall of the rectangular groove. The rectangular positioning plate has a sealed cavity inside, and the upper surface of the rectangular positioning plate has six recessed grooves arranged in a rectangular array. The inner walls of the six recessed grooves are all fixed with vacuum suction cups, and the vacuum suction cups are in communication with the interior of the sealed cavity.

[0018] By adopting the above technical solution, the surface of the soft-pack lithium battery can be effectively adsorbed by six vacuum suction cups, thereby achieving the adsorption and fixation of the soft-pack lithium battery.

[0019] Preferably, the positioning mechanism further includes a negative pressure box disposed on the lower surface of the second mounting base for sucking air from the inside of the sealed cavity. A fixing post is fixedly disposed on the upper surface of the negative pressure box, and the top end of the fixing post is fixedly connected to the lower surface of the second mounting base. The second motor is a dual-axis motor, and a threaded post extending into the inside of the negative pressure box is fixedly disposed at the bottom output shaft end of the second motor. A rotating hole is provided on the upper surface of the negative pressure box for rotatably connecting with the outer surface of the threaded post.

[0020] By adopting the above technical solution, the rotation of the second motor can drive the threaded column to rotate automatically.

[0021] Preferably, a lifting plate and a sealing plate are slidably arranged on the inner wall of the negative pressure box, and two symmetrical connecting rods are fixed on the opposite surfaces of the lifting plate and the sealing plate. A threaded hole is opened on the upper surface of the lifting plate and threadedly connected to the outer surface of the threaded column. A negative pressure pipe is provided at the bottom end of the negative pressure box. One end of the negative pressure pipe extends into the interior of the negative pressure box, and the other end of the negative pressure pipe extends into the interior of the sealing cavity inside the rectangular positioning plate.

[0022] By adopting the above technical solution, the lifting plate can be automatically moved upward during the rotation of the threaded column. The upward movement of the lifting plate drives the sealing plate to move upward through the connecting rod. The upward movement of the sealing plate generates negative pressure inside the negative pressure box, and draws air into the sealing cavity inside the rectangular positioning plate through the negative pressure pipe.

[0023] This application also provides a coating process for a soft-pack lithium battery encapsulation and coating integrated machine, including the following steps: S1. Loading: Place the soft-pack lithium battery on the surface of the rectangular positioning plate on the workbench. S2. Limiting and fixing: Start the second motor to drive the limiting roller to rotate to a position parallel to the film-applying roller, limiting the film in the middle between the limiting roller and the film-applying roller. At the same time, the rotation of the second motor causes the six vacuum suction cups to adsorb and fix the surface of the soft-pack lithium battery. S3. Apply film: Start the electric slide rail and the first motor. The electric slide rail drives the slider, film application roller and the limiting roller to move. At the same time, the first motor drives the film application roller to rotate, so that the film can be gradually applied to the surface of the soft-pack lithium battery as the film application roller and the limiting roller move. S4. Unloading: Start the electric slide rail and the second motor in reverse order to reset the film-applying roller and the limiting roller, and release the adsorption and fixation of the soft-pack lithium battery before removing the soft-pack lithium battery.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The soft-pack lithium battery encapsulation and coating integrated machine and its coating process described in this application, by setting a coating mechanism and a limiting mechanism, when coating the soft-pack lithium battery, firstly, the encapsulated soft-pack lithium battery is placed at a designated position on the worktable, and after the film on the soft-pack lithium battery is lifted upward, the second motor is started. The rotation of the second motor drives the L-shaped connecting rod to rotate, thereby driving the limiting roller to rotate to a position parallel to the coating roller, so that the limiting roller limits the film in the middle between the limiting roller and the coating roller. Finally, the electric slide rail and the first motor are started. The electric slide rail drives the slider, the coating roller and the limiting roller to move, and at the same time, the first motor drives the coating roller to rotate, so that the film can be gradually bonded to the surface of the soft-pack lithium battery as the coating roller and the limiting roller move, thereby achieving the purpose of automatic high-quality coating and effectively ensuring the quality of coating.

[0025] 2. The soft-pack lithium battery encapsulation and coating integrated machine and its coating process described in this application, by setting a positioning mechanism, when the soft-pack lithium battery is placed on the worktable, it is placed on the upper surface of the rectangular positioning plate. Moreover, when the rotation of the second motor drives the limiting roller to rotate to a position parallel to the coating roller, the rotation of the second motor can drive the threaded column to rotate. The rotation of the threaded column drives the lifting plate to move upward automatically. The upward movement of the lifting plate drives the sealing plate to move upward through the connecting rod. The upward movement of the sealing plate creates a negative pressure inside the negative pressure box, and sucks air into the sealing cavity inside the rectangular positioning plate through the negative pressure pipe. Thus, the six vacuum suction cups can effectively and automatically adhere to the surface of the soft-pack lithium battery, realizing the automatic fixation of the soft-pack lithium battery, thereby effectively ensuring the stability of the soft-pack lithium battery during coating. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the soft-pack lithium battery encapsulation and film application machine of this application; Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this application; Figure 3 This is a side view of the structure of Embodiment 1 of this application; Figure 4 This is a top view of the structure of Embodiment 1 of this application; Figure 5 This is a bottom view of the structure of Embodiment 1 of this application; Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of this application; Figure 7 This is a schematic diagram of the internal structure of the negative pressure box in Embodiment 2 of this application; Figure 8 This application Figure 7 Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the three-dimensional structure of the rectangular positioning plate in Embodiment 2 of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Demolding mechanism; 100. Film application platform; 101. Base; 102. Workbench; 103. Mounting rod; 104. Connecting platform; 105. Hydraulic rod; 106. Limiting plate; 200. Film application mechanism; 201. Electric slide rail; 202. Slider; 203. L-shaped mounting base; 204. Cylinder; 205. First mounting base; 206. First motor; 207. Rotating shaft; 208. Film application roller; 300. Limiting mechanism; 301. Second mounting base; 302. Second motor; 303. L-shaped connecting rod; 304. Limiting roller; 305. Limiting block; 400. Positioning mechanism; 401. Rectangular positioning plate; 402. Vacuum suction cup; 403. Negative pressure box; 404. Fixed column; 405. Threaded column; 406. Lifting plate; 407. Sealing plate; 408. Connecting rod; 409. Negative pressure pipe; 500, rack; 600, packaging mechanism. Detailed Implementation

[0028] The following combination Figures 1 to 9 This application will be described in further detail below.

[0029] Example 1 Please refer to the following carefully. Figures 1 to 5A soft-pack lithium battery encapsulation and film application integrated machine includes a frame 500 and an encapsulation mechanism 600 and a film application mechanism 1 respectively disposed inside the frame 500. A controller is disposed on the surface of the frame 500, and the encapsulation mechanism 600 inside the frame 500 includes a control module, a clamping module, a vacuum encapsulation module, and a liquid injection module (this part of the encapsulation mechanism 600 is existing mature technology and will not be described again). The film application mechanism 1 includes a film application platform 100, a film application mechanism 200, and a limiting mechanism 300. The film application platform 100 includes a base 101 and a worktable 102 disposed on the upper surface of the base 101. The film application mechanism 200 includes an electric slide rail 201 fixed to the upper surface of the base 101 and a slider 202 slidably disposed on the surface of the electric slide rail 201. An L-shaped mounting base 203 is fixedly mounted on the upper surface of the slider 202. A cylinder 204 is fixedly mounted on the inner wall of the L-shaped mounting base 203. A first mounting base 205 is fixedly mounted on the telescopic end of the cylinder 204. A first motor 206 is fixedly mounted on the upper surface of the first mounting base 205. A rotating shaft 207 is fixedly mounted on the output end of the first motor 206. A film-applying roller 208 is fixedly mounted on the surface of the rotating shaft 207. The limiting mechanism 300 includes a second mounting base 301 fixedly mounted on the outer surface of the L-shaped mounting base 203, and a second motor 302 fixedly mounted on the upper surface of the second mounting base 301. An L-shaped connecting rod 303 is fixedly mounted on the output end of the second motor 302. A limiting roller 304 is fixedly mounted on the end of the L-shaped connecting rod 303. Two limiting blocks 305 corresponding to the film-applying roller 208 are fixedly mounted on the surface of the limiting roller 304.

[0030] Please refer to this carefully. Figure 2 , Figure 3 Three mounting rods 103 are fixedly provided on the upper surface of the base 101, and a connecting platform 104 is fixedly provided at the top of the three mounting rods 103. Four hydraulic rods 105 are embedded in a rectangular array on the surface of the connecting platform 104, and the telescopic ends of the four hydraulic rods 105 are fixedly connected to the lower surface of the worktable 102.

[0031] Specifically, the working height of the worktable 102 can be automatically adjusted via the hydraulic rod 105 on the connecting platform 104.

[0032] Please refer to this carefully. Figure 3 , Figure 4 The upper surface of the workbench 102 is provided with two sets of corresponding threaded mounting holes. The upper surface of the workbench 102 is provided with a limiting plate 106 for positioning the soft-pack lithium battery. The upper surface of the limiting plate 106 is provided with waist holes corresponding to the two sets of threaded mounting holes. The inner walls of the two waist holes are provided with locking bolts that are threaded to the inner walls of the threaded mounting holes.

[0033] Specifically, the limiting plate 106 can effectively limit the soft-pack lithium battery placed on the worktable 102.

[0034] Please refer to this carefully. Figure 4 , Figure 5 The cross-sectional shape of the film-applying roller 208 is elliptical, and the surface of the rotating shaft 207 is provided with a positioning ring for positioning the film-applying roller 208.

[0035] Specifically, it enables the film-applying roller 208 to apply the film to the soft-pack lithium battery more smoothly.

[0036] Please refer to this carefully. Figure 3 , Figure 4 The L-shaped mounting base 203 is fixed to the upper surface of the slider 202 by the first fixing bolt, and the cylinder 204 is fixed to the inner wall of the L-shaped mounting base 203 by the second fixing bolt.

[0037] Specifically, the cylinder 204 can drive the slider 202 to move automatically.

[0038] In this embodiment, by setting up a film-applying mechanism 200 and a limiting mechanism 300, when applying film to a soft-pack lithium battery, the packaged soft-pack lithium battery is first placed at a designated position on the workbench 102. After the film on the soft-pack lithium battery is lifted upwards, the second motor 302 is started. The rotation of the second motor 302 drives the L-shaped connecting rod 303 to rotate, thereby driving the limiting roller 304 to rotate to a position parallel to the film-applying roller 208. This allows the limiting roller 304 to limit the film between the limiting roller 304 and the film-applying roller 208. Finally, the electric slide rail 201 and the first motor 206 are started. The electric slide rail 201 drives the slider 202, the film-applying roller 208, and the limiting roller 304 to move. At the same time, the first motor 206 drives the film-applying roller 208 to rotate, so that the film can be gradually applied to the surface of the soft-pack lithium battery as the film-applying roller 208 and the limiting roller 304 move, achieving the purpose of automatic high-quality film application and effectively ensuring the quality of film application.

[0039] Example 2 Based on Example 1, referring to Figures 5 to 8 And unlike Example 1, the following is true: Please refer to this carefully. Figure 6 , Figure 7 The upper surface of the worktable 102 is provided with a positioning mechanism 400 for positioning the soft-pack lithium battery.

[0040] Specifically, it can effectively fix the soft-pack lithium battery, thereby ensuring the stability of the soft-pack lithium battery when applying the film.

[0041] Please refer to this carefully. Figure 7 , Figure 9The positioning mechanism 400 includes a rectangular groove on the upper surface of the worktable 102 and a rectangular positioning plate 401 disposed on the inner wall of the rectangular groove. The rectangular positioning plate 401 has a sealed cavity inside, and the upper surface of the rectangular positioning plate 401 has six recessed grooves arranged in a rectangular array. The inner walls of the six recessed grooves are all fixed with vacuum suction cups 402, and the vacuum suction cups 402 are in communication with the interior of the sealed cavity.

[0042] Specifically, the six vacuum suction cups 402 can effectively adsorb onto the surface of the soft-pack lithium battery, thereby achieving the adsorption and fixation of the soft-pack lithium battery.

[0043] Please refer to this carefully. Figure 7 , Figure 8 The positioning mechanism 400 also includes a negative pressure box 403 disposed on the lower surface of the second mounting base 301 for sucking air from the inside of the sealed cavity. A fixing post 404 is fixedly disposed on the upper surface of the negative pressure box 403. The top end of the fixing post 404 is fixedly connected to the lower surface of the second mounting base 301. The second motor 302 is a dual-axis motor. A threaded post 405 extending into the inside of the negative pressure box 403 is fixedly disposed at the bottom output shaft end of the second motor 302. A rotating hole is opened on the upper surface of the negative pressure box 403 to rotatably connect with the outer surface of the threaded post 405.

[0044] Specifically, the rotation of the second motor 302 can drive the threaded column 405 to rotate automatically.

[0045] Please refer to this carefully. Figure 7 , Figure 8 The inner wall of the negative pressure box 403 is slidably provided with a lifting plate 406 and a sealing plate 407. Two symmetrical connecting rods 408 are fixed on the opposite surfaces of the lifting plate 406 and the sealing plate 407. The upper surface of the lifting plate 406 is provided with a threaded hole that is threaded to the outer surface of the threaded column 405. The bottom end of the negative pressure box 403 is provided with a negative pressure pipe 409. One end of the negative pressure pipe 409 extends into the interior of the negative pressure box 403, and the other end of the negative pressure pipe 409 extends into the interior of the sealing cavity inside the rectangular positioning plate 401.

[0046] Specifically, during the rotation of the threaded column 405, the lifting plate 406 can be driven to move upward automatically. The upward movement of the lifting plate 406 drives the sealing plate 407 to move upward through the connecting rod 408. The upward movement of the sealing plate 407 generates negative pressure inside the negative pressure box 403, and draws air into the sealing cavity inside the rectangular positioning plate 401 through the negative pressure pipe 409.

[0047] In this embodiment, by setting a positioning mechanism 400, when the soft-pack lithium battery is placed on the worktable 102, it is placed on the upper surface of the rectangular positioning plate 401. When the rotation of the second motor 302 drives the limiting roller 304 to rotate to a position parallel to the film-applying roller 208, the rotation of the second motor 302 can drive the threaded column 405 to rotate. The rotation of the threaded column 405 drives the lifting plate 406 to move upward automatically. The upward movement of the lifting plate 406 drives the sealing plate 407 to move upward through the connecting rod 408. The upward movement of the sealing plate 407 generates negative pressure inside the negative pressure box 403, and sucks air into the sealed cavity inside the rectangular positioning plate 401 through the negative pressure pipe 409. This allows the six vacuum suction cups 402 to be effectively and automatically adsorbed on the surface of the soft-pack lithium battery, realizing the automatic fixation of the soft-pack lithium battery, and thus effectively ensuring the stability of the soft-pack lithium battery during film application.

[0048] This invention also provides a coating process for an integrated packaging and coating machine for soft-pack lithium batteries, comprising the following steps: S1. Loading: Place the soft-pack lithium battery on the surface of the rectangular positioning plate 401 on the workbench 102. S2. Limiting and fixing: Start the second motor 302 to drive the limiting roller 304 to rotate to a position parallel to the film-applying roller 208, and limit the film in the middle of the limiting roller 304 and the film-applying roller 208. At the same time, the rotation of the second motor 302 causes the six vacuum suction cups 402 to adsorb and fix the surface of the soft-pack lithium battery. S3. Apply film. Start the electric slide rail 201 and the first motor 206. The electric slide rail 201 drives the slider 202, the film application roller 208 and the limiting roller 304 to move. At the same time, the first motor 206 drives the film application roller 208 to rotate, so that the film can be gradually applied to the surface of the soft-pack lithium battery as the film application roller 208 and the limiting roller 304 move. S4. Unloading: The electric slide rail 201 and the second motor 302 are started in reverse order to reset the film-applying roller 208 and the limiting roller 304. After releasing the adsorption and fixation of the soft-pack lithium battery, the soft-pack lithium battery is removed.

[0049] Working principle: First, the soft-pack lithium battery is packaged by the packaging mechanism 600 inside the frame 500. After packaging, when applying the film to the soft-pack lithium battery, the packaged soft-pack lithium battery is placed in the designated position on the workbench 102 and placed on the upper surface of the rectangular positioning plate 401. Then, after the film on the soft-pack lithium battery is lifted upward, the second motor 302 is started. The rotation of the second motor 302 drives the L-shaped connecting rod 303 to rotate, thereby driving the limiting roller 304 to rotate to a position parallel to the film-applying roller 208, so that the limiting roller 304 limits the film between the limiting roller 304 and the film-applying roller 208. Moreover, when the rotation of the second motor 302 drives the limiting roller 304 to rotate to a position parallel to the film-applying roller 208, the rotation of the second motor 302 can drive the threaded column 405 to rotate. The rotation of the threaded column 405 drives the lifting plate 406 to move upward automatically. The upward movement of plate 406 drives the sealing plate 407 upward via connecting rod 408. The upward movement of sealing plate 407 creates negative pressure inside negative pressure box 403, and through negative pressure pipe 409, it draws air into the sealed cavity inside rectangular positioning plate 401. This allows six vacuum suction cups 402 to effectively and automatically adhere to the surface of the soft-pack lithium battery, achieving automatic fixation of the soft-pack lithium battery and effectively ensuring the stability of the soft-pack lithium battery during film application. Finally, the electric slide rail 201 and the first motor 206 are activated. The electric slide rail 201 drives the slider 202, film application roller 208, and limiting roller 304 to move. At the same time, the first motor 206 drives the film application roller 208 to rotate, so that the film can gradually adhere to the surface of the soft-pack lithium battery as the film application roller 208 and limiting roller 304 move, achieving the purpose of automatic high-quality film application and effectively ensuring the quality of film application.

Claims

1. A soft package lithium battery packaging and film pasting all-in-one machine, characterized in that, It includes a frame (500), and a packaging mechanism (600) and a film application mechanism (1) respectively disposed inside the frame (500). The film application mechanism (1) includes a film application platform (100), a film application mechanism (200), and a limiting mechanism (300). The film application platform (100) includes a base (101) and a worktable (102) disposed on the upper surface of the base (101). The film application mechanism (200) includes an electric slide rail (201) fixed on the upper surface of the base (101) and a slider (202) slidably disposed on the surface of the electric slide rail (201). An L-shaped mounting seat (203) is fixed on the upper surface of the slider (202). A cylinder (204) is fixed on the inner wall of the L-shaped mounting seat (203). A first mounting seat (205) is fixed on the telescopic end of the cylinder (204). A first motor (206) is fixed on the upper surface of the first mounting seat (205). A rotating shaft (207) is fixed on the output end of the first motor (206), and a film application roller (208) is fixed on the surface of the rotating shaft (207). The limiting mechanism (300) includes a second mounting base (301) fixed on the outer surface of the L-shaped mounting base (203) and a second motor (302) fixed on the upper surface of the second mounting base (301). The output end of the second motor (302) is fixed with an L-shaped connecting rod (303), and the end of the L-shaped connecting rod (303) is fixed with a limiting roller (304). The surface of the limiting roller (304) is fixed with two limiting blocks (305) corresponding to the film-applying roller (208).

2. The soft package lithium battery packaging and film pasting all-in-one machine of claim 1, wherein, The upper surface of the base (101) is fixed with three mounting rods (103), and the top of the three mounting rods (103) is fixed with a connecting platform (104). The surface of the connecting platform (104) is embedded with four hydraulic rods (105) in a rectangular array, and the telescopic ends of the four hydraulic rods (105) are all fixedly connected to the lower surface of the worktable (102).

3. The soft package lithium battery packaging and film pasting all-in-one machine of claim 1, wherein, The upper surface of the workbench (102) is provided with two sets of corresponding threaded mounting holes. The upper surface of the workbench (102) is provided with a limiting plate (106) for positioning the soft-pack lithium battery. The upper surface of the limiting plate (106) is provided with waist holes corresponding to the two sets of threaded mounting holes. The inner walls of the two waist holes are provided with locking bolts that are threaded to the inner walls of the threaded mounting holes.

4. The soft package lithium battery packaging and film pasting all-in-one machine of claim 1, wherein, The cross-sectional shape of the film-applying roller (208) is elliptical, and the surface of the rotating shaft (207) is provided with a positioning ring for positioning the film-applying roller (208).

5. The soft package lithium battery packaging and film pasting all-in-one machine of claim 1, wherein, The L-shaped mounting base (203) is fixed to the upper surface of the slider (202) by the first fixing bolt, and the cylinder (204) is fixed to the inner wall of the L-shaped mounting base (203) by the second fixing bolt.

6. The soft package lithium battery packaging and film pasting all-in-one machine of claim 1, wherein, The upper surface of the worktable (102) is provided with a positioning mechanism (400) for positioning the soft-pack lithium battery.

7. The soft package lithium battery packaging and film pasting all-in-one machine of claim 6, wherein, The positioning mechanism (400) includes a rectangular groove on the upper surface of the worktable (102) and a rectangular positioning plate (401) disposed on the inner wall of the rectangular groove. The rectangular positioning plate (401) has a sealed cavity inside, and the upper surface of the rectangular positioning plate (401) has six recessed grooves arranged in a rectangular array. The inner walls of the six recessed grooves are all fixed with vacuum suction cups (402), and the vacuum suction cups (402) are in communication with the interior of the sealed cavity.

8. The integrated packaging and film application machine for soft-pack lithium batteries according to claim 7, characterized in that, The positioning mechanism (400) further includes a negative pressure box (403) disposed on the lower surface of the second mounting base (301) for sucking air into the interior of the sealed cavity. A fixing post (404) is fixedly disposed on the upper surface of the negative pressure box (403). The top end of the fixing post (404) is fixedly connected to the lower surface of the second mounting base (301). The second motor (302) is a dual-axis motor. A threaded post (405) extending into the interior of the negative pressure box (403) is fixedly disposed at the bottom output shaft end of the second motor (302). A rotating hole is opened on the upper surface of the negative pressure box (403) and rotatably connected to the outer surface of the threaded post (405).

9. The integrated packaging and film application machine for soft-pack lithium batteries according to claim 8, characterized in that, The inner wall of the negative pressure box (403) is slidably provided with a lifting plate (406) and a sealing plate (407). Two symmetrical connecting rods (408) are fixed on the opposite surfaces of the lifting plate (406) and the sealing plate (407). The upper surface of the lifting plate (406) is provided with a threaded hole that is threaded to the outer surface of the threaded column (405). The bottom end of the negative pressure box (403) is provided with a negative pressure tube (409). One end of the negative pressure tube (409) extends into the interior of the negative pressure box (403), and the other end of the negative pressure tube (409) extends into the interior of the sealing cavity inside the rectangular positioning plate (401).

10. A coating process for a soft-pack lithium battery encapsulation and coating integrated machine, characterized in that, The encapsulation process of the integrated soft-pack lithium battery encapsulation and film application machine as described in claim 9 includes the following steps: S1. Loading: Place the soft-pack lithium battery on the surface of the rectangular positioning plate (401) on the workbench (102); S2. Limiting and fixing: Start the second motor (302) to drive the limiting roller (304) to rotate to a position parallel to the film-applying roller (208), and limit the film in the middle between the limiting roller (304) and the film-applying roller (208). At the same time, the rotation of the second motor (302) causes the six vacuum suction cups (402) to adsorb and fix the surface of the soft-pack lithium battery. S3. Apply film. Start the electric slide rail (201) and the first motor (206). The electric slide rail (201) drives the slider (202), the film application roller (208) and the limiting roller (304) to move. At the same time, the first motor (206) drives the film application roller (208) to rotate, so that the film can be gradually applied to the surface of the soft-pack lithium battery as the film application roller (208) and the limiting roller (304) move. S4. Unloading: Start the electric slide rail (201) and the second motor (302) in reverse order to reset the film-applying roller (208) and the limiting roller (304), and remove the soft-pack lithium battery after releasing its adsorption and fixation.

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