Lithium battery film pasting mechanism

Abstract

The utility model relates to a lithium battery film pasting mechanism in the field of lithium batteries, which can be installed in a lithium battery edge sealing and film pasting all-in-one machine and comprises a fixing frame, a feeding platform, a film feeding assembly and a pasting assembly, the film feeding assembly and the pasting assembly are arranged on the fixing frame, and the pasting assembly comprises a material pulling clamping jaw, a pressing roller fixing seat and two pasting pressing rollers. An elastic connecting piece is arranged between the two attaching compression rollers, the elastic connecting piece can ensure that the two attaching compression rollers can be attached to the surface of the lithium battery, the compression roller fixing base is arranged on the fixing frame through an air cylinder horizontal driving assembly, and the elastic attaching compression roller assemblies which are arranged in parallel up and down are matched with the compression roller fixing base capable of horizontally moving and the material pulling clamping jaw. And in the film pasting process, the lithium battery penetrates through a gap between the double pressing rollers at a time. The elastic connecting pieces provide self-adaptive pressure for the pressing rollers, it is guaranteed that the double pressing rollers are tightly attached to the upper surface and the lower surface of the battery all the time, double-face synchronous pressing of the protective film is achieved, and the problem of film material deviation caused by two-time positioning in a traditional overturning film pasting technology is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lithium battery, especially lithium battery film pasting mechanism. BACKGROUND

[0002] Lithium battery is the core component of modern electronic equipment, electric vehicle and energy storage system, and its packaging process directly affects the reliability and service life of the battery. Among them, the surface of the lithium battery is pasted with a protective film, which is a key process in the packaging process, mainly used for insulation protection, preventing electrolyte leakage and avoiding external mechanical damage. The film pasting process requires the protective film to be closely attached to the surface of the battery without bubbles and deviation, otherwise it may lead to performance degradation of the battery or even safety hazards. With the development of lithium batteries towards high energy density and thinness, the requirements for film pasting precision and efficiency are increasing, and new film pasting devices need to be developed to meet the high-quality production needs.

[0003] The lithium battery film pasting device usually includes a film feeding mechanism, a cutting unit and a pasting mechanism. The film feeding mechanism is responsible for releasing the protective film in a roll, and the cutting unit cuts the film material into a fixed size sheet by driving the cutter with a pneumatic cylinder. In the pasting mechanism, the mechanical clamps or suction cups transfer the cut protective film to the surface of the battery, and the film material is divided into two parts by the turnover mechanism: first, half of the film material is pasted on one side of the battery surface, and then the remaining film material is bent around the edge of the battery and pasted on the other side surface by the turnover mechanism. In this process, the film positioning, turning angle and pasting pressure are controlled by mechanical transmission and pneumatic components.

[0004] The existing film pasting device has significant defects in actual application. First, the step-by-step pasting process requires positioning and pressing the film material twice, and the film material is prone to shift due to mechanical errors or external interference during operation, resulting in misalignment of the film pasting edge. Second, when the film material is turned and pasted, it does not fully contact the surface of the battery, and the remaining air is difficult to discharge, which is prone to form bubbles, affecting the sealing. In addition, the step-by-step operation relies on multiple sets of driving mechanisms to work together, which has high system complexity and poor stability, further exacerbating the quality fluctuation of the film pasting. UTILITY MODEL CONTENTS

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a lithium battery film pasting mechanism, which can effectively solve the technical problem of unstable film pasting quality.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] The lithium battery film pasting mechanism comprises a fixing frame, a feeding platform, a film feeding assembly and a pasting assembly, the film feeding assembly and the pasting assembly are arranged in the fixing frame, the feeding platform is connected with the pasting assembly, the feeding platform comprises a lifting base, a suction table and a pressing rod, the lifting base is provided with a slidable support frame, the support frame moves relative to the lifting base and approaches the fixing frame through a first driving assembly, the suction table is installed at the upper end of the support frame, the suction table is used for carrying the lithium battery to be pasted with the film, the suction table can approach the pasting assembly through the support frame and the first driving assembly, the pressing rod is connected with the support frame through a pressing cylinder, and the pressing rod is lifted relative to the suction table through the pressing cylinder and presses the lithium battery on the suction table.

[0008] The pasting assembly comprises a pulling clamp, a pressing roller fixing seat and two pasting rollers, the two pasting rollers are installed in parallel in the pressing roller fixing seat, the lithium battery passes between the two pasting rollers when the film is pasted, an elastic connecting piece is arranged between the two pasting rollers, the elastic connecting piece ensures that the two pasting rollers are pasted to the surface of the lithium battery, the pressing roller fixing seat is installed in the fixing frame through a horizontal driving cylinder assembly, the pulling clamp is arranged at the end of the pressing roller fixing seat away from the feeding platform through a horizontal driving device, and the moving direction of the pressing roller fixing seat is consistent with the moving direction of the pulling clamp.

[0009] The film feeding assembly is arranged on the side wall of the fixing frame, the film feeding assembly comprises a disc roller, a feeding clamp, a cutter and a film pulling clamp, the side wall of the fixing frame is provided with a guide rail, the feeding clamp and the film pulling clamp are slidably connected with the guide rail, the feeding clamp and the film pulling clamp are located above and below the pasting assembly respectively, the feeding clamp and the film pulling clamp are respectively lifted up and down along the guide rail through a second driving assembly and a third driving assembly, the disc roller is installed at the end of the fixing frame away from the film pulling clamp, the disc roller is used for carrying the lithium battery protection film in a roll, the feeding clamp comprises a lifting plate, a fixed clamping plate, a movable clamping plate and a clamping cylinder, the lifting plate is slidably connected with the guide rail, the fixed clamping plate is connected with the lifting plate, the movable clamping plate is connected with the fixed clamping plate through the clamping cylinder, the lithium battery protection film passes between the movable clamping plate and the fixed clamping plate, and the cutter is installed on one side of the lifting plate close to the film pulling clamp through a cutting cylinder.

[0010] Further, the suction table is slidably arranged on the surface of the support frame, the support frame is provided with a front stretching cylinder for driving the suction table to move horizontally, the pressing cylinder is arranged on the side wall of the support frame, and the pressing rod is located above the suction table.

[0011] Further, the two ends of the pasting roller are provided with mounting seats, the mounting seats of the two pasting rollers are slidably connected through guide rods, a pressing spring is arranged between the mounting seats of the two pasting rollers, and the mounting seat of one of the two pasting rollers is fixedly connected with the pressing roller fixing seat.

[0012] Furthermore, the surface of the lifting plate is provided with a lifting cylinder, and the fixed clamp is connected to the lifting plate through the lifting cylinder. The lifting cylinder can drive the fixed clamp, the movable clamp and the clamping cylinder to move up and down relative to the lifting plate.

[0013] Furthermore, the lifting plate is equipped with a guide block, which has a cutting groove. One end of the cutter passes through the cutting groove, and the cutter moves horizontally along the cutting groove via a cutting cylinder. A pressure strip is provided at the end of the guide block away from the cutter. The lithium battery protective film passes between the guide block and the pressure strip. The pressure strip is driven by a pressure cylinder, so that the pressure strip can approach the guide block and press the lithium battery protective film between the guide block and the pressure strip.

[0014] Furthermore, a limiting roller is provided at one end of the lifting plate near the material tray roller, and a limiting plate is installed on the surface of the movable clamping plate. The limiting plate extends toward one end of the movable clamping plate material tray roller and corresponds to the limiting roller.

[0015] Furthermore, an induction roller is provided between the material tray roller and the feeding fixture. The lithium battery protective film is wrapped around the surface of the induction roller once before being fed into the feeding fixture. When the lithium battery protective film is fed, it can drive the induction roller to rotate. A sensor is provided at one end of the induction roller to detect whether the induction roller is rotating.

[0016] Furthermore, the fixing frame is also equipped with a lifting cylinder, and the telescopic rod of the lifting cylinder is equipped with a material carrier plate, which corresponds to the material pulling claw.

[0017] Compared with existing technologies, the advantages of this invention are as follows: It employs an elastic bonding roller assembly arranged vertically and horizontally, coupled with a horizontally movable roller fixing seat and material pulling gripper, allowing the lithium battery to pass through the gap between the two rollers in one go during the film application process. The elastic connector provides adaptive pressure to the rollers, ensuring that the two rollers remain tightly against the upper and lower surfaces of the battery, achieving synchronous double-sided pressing of the protective film. This avoids the film material misalignment problem caused by two positioning steps in traditional flip-over film application processes. Simultaneous pressure application effectively removes air between the film material and the battery surface, reducing air bubble residue and significantly improving the flatness and sealing of the bonding. The film feeding assembly integrates a material tray roller, feeding clamp, film pulling gripper, and guide rail lifting system, using multiple drive components to collaboratively control the release, clamping, traction, and cutting of the protective film. The fixed and movable clamping plates of the feeding fixture achieve precise clamping and positioning of the membrane material through a clamping cylinder. Combined with the lifting and lowering traction of the film-pulling claws along the guide rail, this ensures the membrane material is in a taut state before cutting. The cutter and film-pulling claws work in tandem, ensuring the cut membrane length precisely matches the battery size. This avoids membrane slack and misalignment caused by step-by-step conveying, reducing the possibility of film misalignment from the outset. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of the feeding platform in this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the fixing frame, film feeding assembly, and bonding assembly in this utility model;

[0021] Figure 4 This is a left view of the fixing frame, film feeding assembly, and bonding assembly in this utility model;

[0022] Figure 5 This is a schematic diagram of the feeding clamp, cutter, and bonding roller in this utility model;

[0023] Figure 6 This is a schematic diagram of the bonding component in this utility model;

[0024] The following are the labels in the diagram: 1-Fixed frame, 2-Feeding platform, 201-Lifting base, 202-Adsorption table, 203-Pressure rod, 204-Support frame, 205-Pressure cylinder, 207-Extend cylinder, 3-Film feeding assembly, 301-Material tray roller, 302-Feeding clamp, 3021-Lifting plate, 3022-Fixed clamping plate, 3023-Modible clamping plate, 3024-Clamping cylinder, 303-Cutter, 304-Film pulling claw, 305-Guide rail, 306-Cutting cylinder, 4-Laminating assembly, 401-Material pulling claw, 402-Pressure roller fixing seat, 403-Laminating pressure roller, 404-Mounting seat, 405-Pressure spring, 5-Guide block, 501-Knife groove, 6-Film pressing strip, 7-Film pressing cylinder, 8-Limiting roller, 9-Limiting plate, 10-Induction roller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The following is combined Figures 1-6 The lithium battery film application mechanism of this utility model is described in detail below:

[0027] A lithium battery film application mechanism, installed in a lithium battery edge sealing and film application integrated machine, and docked with the edge sealing mechanism of the integrated machine, includes a fixed frame 1, a feeding platform 2, a film feeding assembly 3, and a bonding assembly 4. The film feeding assembly 3 and the bonding assembly 4 are disposed in the fixed frame 1. The feeding platform 2 docks with the bonding assembly 4. The feeding platform 2 includes a lifting base 201, an adsorption table 202, and a pressure rod 203. A slidable support frame 204 is provided on the upper end of the lifting base 201. The support frame 204 moves relative to the lifting base 201 and approaches the fixed frame 1 through a first drive assembly. The adsorption table 202 is disposed on the upper end of the support frame 204. The adsorption table 202 is used to support the lithium battery to be filmed. The adsorption table 202 can approach the bonding assembly 4 through the support frame 204 and the first drive assembly. The pressure rod 203 is connected to the pressing cylinder 203. 05 is connected to the support frame 204. The pressure rod 203 approaches the adsorption table 202 through the pressing cylinder 205 and presses the lithium battery in the adsorption table 202. The adsorption table 202 is slidably arranged in the support frame 204. The support frame 204 is equipped with a forward extension cylinder 207 for driving the adsorption table 202 to move horizontally. The pressing cylinder 205 is arranged on the side wall of the support frame 204. The pressure rod 203 is arranged parallel above the adsorption table 202. The forward extension cylinder 207 drives the adsorption table 202 to move horizontally, so that the lithium battery can enter the bonding assembly 4 at the starting position without colliding with other parts. The pressure rod 203 is arranged parallel above the adsorption table 202 and works with the pressing cylinder 205 to apply vertical pressure to prevent the lithium battery from shaking or tilting when pushed towards the bonding assembly 4, further improving the alignment accuracy of the film edge.

[0028] The bonding assembly 4 includes a material pulling gripper 401, a pressure roller fixing seat 402, and two bonding pressure rollers 403. The two bonding pressure rollers 403 are arranged vertically and parallel in the pressure roller fixing seat 402. During film application, the lithium battery passes between the two bonding pressure rollers 403. A lifting cylinder is installed on the surface of the lifting plate 3021. The fixing clamp is connected to the lifting plate 3021 through the lifting cylinder. The lifting cylinder can drive the fixing clamp 3022, the movable clamp 3023, and the clamping cylinder 3024 to move up and down relative to the lifting plate 3021. The guide rod and the compression spring 405 form an elastic pressing mechanism. It can adapt to the size changes of lithium batteries with different thicknesses, ensuring that the dual pressure rollers are always in close contact with the battery surface with constant pressure, eliminating problems such as poor bonding or film wrinkles caused by uneven battery thickness. The elastic pressing force can dynamically compensate for mechanical vibration or film tension fluctuations, maintain the stability of the bonding process, and effectively reduce air bubble residue. The pressure roller fixing seat 402 is connected to the fixing frame 1 through a cylinder horizontal drive assembly. The material pulling claw 401 is set at the end of the pressure roller fixing seat 402 away from the feeding platform 2 through a horizontal drive device. The moving direction of the pressure roller fixing seat 402 is consistent with the moving direction of the material pulling claw 401.

[0029] The film feeding assembly 3 is disposed on the side wall of the fixed frame 1. The film feeding assembly 3 includes a material tray roller 301, a feeding clamp 302, a cutter 303, and a film pulling claw 304. A guide rail 305 is provided on the side wall of the fixed frame 1. The feeding clamp 302 and the film pulling claw 304 are slidably connected to the guide rail 305. The feeding clamp 302 and the film pulling claw 304 are located above and below the bonding assembly 4, respectively. The feeding clamp 302 and the film pulling claw 304 are moved up and down along the guide rail 305 by the second drive assembly and the third drive assembly, respectively. The material tray roller 301 is installed at the end of the fixed frame 1 away from the film pulling claw 304. The feeding fixture 302, used for mounting rolls of lithium battery protective film, includes a lifting plate 3021, a fixed clamping plate 3022, a movable clamping plate 3023, and a clamping cylinder 3024. The lifting plate 3021 is slidably connected to the guide rail 305. The fixed clamping plate 3022 is installed on the surface of the lifting plate 3021. The movable clamping plate 3023 is connected to the fixed clamping plate 3022 via the clamping cylinder 3024. The lithium battery protective film can pass between the movable clamping plate 3023 and the fixed clamping plate 3022. The cutter 303 is installed on the lifting plate 3021 near the film-pulling claw 304 via a cutting cylinder 306.

[0030] The two ends of the bonding pressure roller 403 are provided with mounting seats 404. The mounting seats 404 of the two bonding pressure rollers 403 are slidably connected by guide rods. A compression spring 405 is provided between the mounting seats 404 of the two bonding pressure rollers 403. The mounting seat 404 of one of the two bonding pressure rollers 403 is fixedly connected to the pressure roller fixing seat 402.

[0031] The lifting plate 3021 is equipped with a guide block 5, and a knife groove 501 is provided in the guide block 5. One end of the cutter 303 passes through the knife groove 501, and the cutter 303 moves horizontally along the knife groove 501 by the cutting cylinder 306. A pressure strip 6 is provided at the end of the guide block 5 away from the cutter 303. The lithium battery protective film passes between the guide block 5 and the pressure strip 6. The pressure strip 6 is driven by the pressure cylinder 7, so that the pressure strip 6 can approach the guide block 5 and press the lithium battery protective film between the guide block 5 and the pressure strip 6. The guide block 5 and the pressure strip 6 cooperate to locally press and fix the film material before the cutter 303 cuts the film material, so as to avoid the film material from shifting due to inertia or tension during cutting, and ensure that the cut edge is neat and the size is accurate. The knife groove 501 limits the movement path of the cutter 303, improves the straightness of the cut, reduces burrs or serrated cuts, and reduces the risk of edge lifting during subsequent film application.

[0032] A limiting roller 8 is provided at one end of the lifting plate 3021 near the material tray roller 301. A limiting plate 9 is installed on the surface of the movable clamping plate 3023. The limiting plate 9 extends toward one end of the material tray roller 301 of the movable clamping plate 3023 and corresponds to the limiting roller 8. The limiting roller 8 and the limiting plate 9 form a film material conveying channel. The limiting plate 9 limits the protective film to ensure that the protective film bends to the same side each time the lifting plate 3021 is raised.

[0033] An induction roller 10 is provided between the material tray roller 301 and the feeding clamp 302. The lithium battery protective film is wrapped around the surface of the induction roller 10 and then fed into the feeding clamp 302. When the lithium battery protective film is fed, it can drive the induction roller 10 to rotate. A sensor is provided at one end of the induction roller 10. The sensor is used to detect whether the induction roller 10 is rotating. The induction roller 10 and the sensor monitor the film material conveying status in real time. If the film material is exhausted, the sensor immediately sends a stop signal to avoid the occurrence of empty application.

[0034] The fixed frame 1 is equipped with a lifting cylinder, and a material carrier plate is provided on the telescopic rod of the lifting cylinder. The material carrier plate corresponds to the material pulling claw 401. After the film is applied, the lithium battery is placed on the surface of the material carrier plate. The material carrier plate is raised to facilitate the removal of the finished product.

[0035] Please write the working process of the lithium battery film application mechanism based on the above information. The protective film is drawn out from the material tray roller 301, passes around the induction roller 10, and then passes sequentially between the fixed clamping plate 3022, the movable clamping plate 3023, the guide block 5, and the pressure strip 6. The feeding clamp 302 clamps the protective film, the lifting plate 3021 descends, and the film pulling claw 304 rises and clamps the protective film. After the film pulling claw 304 clamps the protective film, the feeding clamp 302 releases the protective film. The lifting plate 3021 and the film pulling claw 304 then move away from each other to pull the protective film to a preset length. The feeding clamp 302 clamps the protective film again, and the two bonding pressure rollers 403 pass through the pressure roller fixing seat 40. 2. Move to the space between the feeding clamp 302 and the film pulling claw 304 and contact the surface of the protective film. The feeding platform 2 pushes one end of the lithium battery between the two bonding rollers 403. The cutter 303 cuts the protective film. The lithium battery pushes the protective film together into the space between the two bonding rollers 403. The pulling claw 401 clamps the end of the lithium battery that passes through the two bonding rollers 403 and pulls it backward. While pulling the lithium battery, the feeding clamp 302 and the film pulling claw 304 move closer to the lithium battery to cooperate in applying the film. After the lithium battery has completely passed through the two bonding rollers 403, the protective film is bonded to both sides of the lithium battery. The two bonding rollers 403 are reset, completing one film application.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lithium battery film application mechanism, characterized in that: The system includes a fixed frame (1), a feeding platform (2), a film feeding assembly (3), and a bonding assembly (4). The film feeding assembly (3) and the bonding assembly (4) are disposed in the fixed frame (1). The feeding platform (2) is connected to the bonding assembly (4). The feeding platform (2) includes a lifting base (201), an adsorption table (202), and a pressure bar (203). A slidable support frame (204) is provided on the upper end of the lifting base (201). The support frame (204) moves relative to the lifting base (201) through a first drive assembly. And close to the fixed frame (1), the adsorption platform (202) is installed on the upper end of the support frame (204). The adsorption platform (202) is used to carry the lithium battery to be coated. The adsorption platform (202) can approach the bonding component (4) through the support frame (204) and the first drive component. The pressure rod (203) is connected to the support frame (204) through the pressing cylinder (205). The pressure rod (203) is raised and lowered relative to the adsorption platform (202) through the pressing cylinder (205) and presses the lithium battery in the adsorption platform (202). The bonding assembly (4) includes a material pulling gripper (401), a pressure roller fixing seat (402), and two bonding pressure rollers (403). The two bonding pressure rollers (403) are installed in parallel in the pressure roller fixing seat (402). When the film is applied, the lithium battery passes between the two bonding pressure rollers (403). An elastic connector is provided between the two bonding pressure rollers (403). The elastic connector ensures that the two bonding pressure rollers (403) are bonded to the surface of the lithium battery. The pressure roller fixing seat (402) is installed in the fixing frame (1) by a cylinder horizontal drive assembly. The material pulling gripper (401) is set at the end of the pressure roller fixing seat (402) away from the feeding platform (2) by a horizontal drive device. The moving direction of the pressure roller fixing seat (402) is consistent with the moving direction of the material pulling gripper (401). The film feeding assembly (3) is disposed on the side wall of the fixed frame (1). The film feeding assembly (3) includes a material tray roller (301), a feeding clamp (302), a cutter (303), and a film pulling claw (304). A guide rail (305) is provided on the side wall of the fixed frame (1). The feeding clamp (302) and the film pulling claw (304) are slidably connected to the guide rail (305). The feeding clamp (302) and the film pulling claw (304) are located above and below the bonding assembly (4), respectively. The feeding clamp (302) and the film pulling claw (304) are raised and lowered along the guide rail (305) by the second drive assembly and the third drive assembly, respectively. The material tray roller (301) is installed at the end of the fixed frame (1) away from the film pulling claw (304). The roller (301) is used to carry the rolled lithium battery protective film. The feeding fixture (302) includes a lifting plate (3021), a fixed clamping plate (3022), a movable clamping plate (3023), and a clamping cylinder (3024). The lifting plate (3021) is slidably connected to the guide rail (305). The fixed clamping plate (3022) is connected to the lifting plate (3021). The movable clamping plate (3023) is connected to the fixed clamping plate (3022) through the clamping cylinder (3024). The lithium battery protective film passes between the movable clamping plate (3023) and the fixed clamping plate (3022). The cutter (303) is installed on the side of the lifting plate (3021) near the film pulling claw (304) through the cutting cylinder (306).

2. The lithium battery film application mechanism according to claim 1, characterized in that: The adsorption platform (202) is slidably disposed on the surface of the support frame (204). The support frame (204) is equipped with a forward cylinder (207) for driving the adsorption platform (202) to move horizontally. The pressing cylinder (205) is disposed on the side wall of the support frame (204), and the pressure rod (203) is located above the adsorption platform (202).

3. The lithium battery film application mechanism according to claim 1, characterized in that: The bonding roller (403) has mounting seats (404) at both ends. The mounting seats (404) of the two bonding rollers (403) are slidably connected by guide rods. A compression spring (405) is provided between the mounting seats (404) of the two bonding rollers (403). The mounting seat (404) of one of the two bonding rollers (403) is fixedly connected to the roller fixing seat (402).

4. The lithium battery film application mechanism according to claim 1, characterized in that: The surface of the lifting plate (3021) is provided with a lifting cylinder. The fixed clamp is connected to the lifting plate (3021) through the lifting cylinder. The lifting cylinder can drive the fixed clamp (3022), the movable clamp (3023) and the clamping cylinder (3024) to move up and down relative to the lifting plate (3021).

5. The lithium battery film application mechanism according to claim 1, characterized in that: The lifting plate (3021) is equipped with a guide block (5), the guide block (5) is provided with a knife groove (501), one end of the cutter (303) passes through the knife groove (501), and the cutter (303) moves horizontally along the knife groove (501) by the cutting cylinder (306). A pressure strip (6) is provided at the end of the guide block (5) away from the cutter (303). The lithium battery protective film passes between the guide block (5) and the pressure strip (6). The pressure strip (6) is driven by the pressure cylinder (7) so that the pressure strip (6) can approach the guide block (5) and press the lithium battery protective film between the guide block (5) and the pressure strip (6).

6. The lithium battery film application mechanism according to any one of claims 1-5, characterized in that: A limiting roller (8) is provided at one end of the lifting plate (3021) near the material tray roller (301), and a limiting plate (9) is installed on the surface of the movable clamping plate (3023). The limiting plate (9) extends toward one end of the material tray roller (301) of the movable clamping plate (3023) and corresponds to the limiting roller (8).

7. The lithium battery film application mechanism according to any one of claims 1-5, characterized in that: An induction roller (10) is provided between the material tray roller (301) and the feeding fixture (302). The lithium battery protective film is wrapped around the surface of the induction roller (10) and then fed into the feeding fixture (302). When the lithium battery protective film is fed, it can drive the induction roller (10) to rotate. A sensor is provided at one end of the induction roller (10) to detect whether the induction roller (10) is rotating.

8. The lithium battery film application mechanism according to any one of claims 1-5, characterized in that: The fixed frame (1) is also equipped with a lifting cylinder, and the telescopic rod of the lifting cylinder is equipped with a material carrier plate, which corresponds to the material pulling claw (401).

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