Lithium battery protective film coating equipment

Abstract

The invention discloses lithium battery protective film coating equipment, and belongs to the technical field of lithium battery coating, the lithium battery protective film coating equipment comprises a rack, and further comprises a film unfolding mechanism, a battery coating mechanism and a laminating mechanism, one side of the rack is provided with the film unfolding mechanism for unwinding and spreading a protective film, and the laminating mechanism is provided with a laminating mechanism; a battery wrapping mechanism for wrapping a battery with a film is installed on one side of the machine frame, an attaching mechanism for attaching the side edge of the battery wrapped with the film is installed on the upper side of the machine frame, the film unfolding mechanism comprises an unwinding assembly and an alternate unfolding assembly, the unwinding assembly for auxiliary unwinding of the film is installed on the upper side of the machine frame, and the alternate unfolding assembly is installed on the lower side of the machine frame. The upper side of the rack is provided with an alternate unfolding assembly for alternately unfolding a film. By means of the mode, bubbles can be eliminated while protective films on the upper face, the lower face, the front face and the back face of a battery can be rapidly attached, the protective films on the side wall of the battery can be rapidly further attached to complete battery film coating, and the production efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of lithium battery coating technology, specifically to a lithium battery protective film coating device. Background Technology

[0002] Lithium-ion battery coating is a key process in the later stages of cell packaging. By covering the surface of the cell (square, pouch, cylindrical) with an insulating film, functions such as insulation protection, short-circuit protection, corrosion protection, mechanical protection, and appearance neatness are achieved. When coating the cell, gaps need to be reserved at the tab positions to avoid affecting the installation of the cell. At the same time, when applying the film, try to avoid the formation of air bubbles between the film and the cell shell. Air bubbles will affect the strength of the film, making it easy to scratch and crack, thus affecting the insulation of the cell shell.

[0003] Chinese patent CN119079209A discloses a lithium battery protective film coating equipment, comprising: a frame with a double-pushing station, a coating station, and an unwinding station arranged sequentially along the x-axis; a pushing device disposed at the double-pushing station, including a left pushing mechanism and a right pushing mechanism, the left pushing mechanism and the right pushing mechanism moving alternately to push the battery to be coated into the coating station along the x-axis, wherein the battery is placed with its left large surface facing up, bottom surface facing forward, and right large surface facing down; and an unwinding device disposed at the unwinding station. The system includes an unwinding shaft and a film-paper separation mechanism. The unwinding shaft is used to hold the roll of film, and the film-paper separation mechanism is used to separate the backing paper and the blue film of the roll of film. A wrapping device is configured at the wrapping station and includes a film output mechanism, a film cutting mechanism, a film preparation mechanism, and a wrapping mechanism arranged sequentially from top to bottom. The film output mechanism is used to receive and pull the blue film downwards. The film cutting mechanism is used to cut the blue film to a preset length. The film preparation mechanism is used to receive and transport the cut blue film to the wrapping mechanism. The wrapping mechanism includes a film feeding assembly and a wrapping roller assembly.

[0004] However, the technical solution of this patent has the following problems: This patent cannot quickly apply protective film to the top, bottom, front, and back of the battery while simultaneously eliminating air bubbles, nor can it quickly apply further protective film to the sidewalls of the battery.

[0005] Based on this, the present invention designs a lithium battery protective film coating device to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a lithium battery protective film coating device.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A lithium battery protective film coating device includes a frame, and further includes a film unfolding mechanism, a battery wrapping mechanism, and a bonding mechanism. The film unfolding mechanism for unwinding and flattening the protective film is installed on one side of the frame, the battery wrapping mechanism for coating the battery is installed on one side of the frame, and the bonding mechanism for side bonding of the coated battery is installed on the upper side of the frame. The film unfolding mechanism includes: an unwinding assembly and an alternating unfolding assembly. An unwinding assembly for assisting unwinding the film is installed on the upper side of the frame, and an alternating unfolding assembly for alternately unfolding the film is installed on the upper side of the frame. The battery wrapping mechanism includes a moving component and an upper and lower wrapping component. The moving component, which clamps and moves the battery, is installed on the upper side of the frame, and the wrapping component, which covers and wraps the upper and lower surfaces of the battery, is installed on the upper side of the frame.

[0008] Furthermore, the unwinding assembly includes a release assembly and a limiting assembly, wherein the release assembly is mounted on the upper side of the frame and the limiting assembly is mounted on the upper side of the frame.

[0009] Furthermore, the alternating deployment assembly includes a first drive assembly and a clamping assembly, with two first drive assemblies respectively mounted on the left and right sides of the frame, and the clamping assembly mounted on the output end of the first drive assembly.

[0010] Furthermore, the first drive assembly includes: a first linear module, the first linear module being fixedly mounted on the upper side of the frame; the clamping assembly includes: a first gripper cylinder and a clamping plate, the first gripper cylinder being fixedly mounted on the output end of the first linear module, and the clamping plate being fixedly mounted on the output end of the first gripper cylinder.

[0011] Furthermore, the moving component includes: a first servo electric cylinder, a second air cylinder, and a horizontal plate. The two first servo electric cylinders are symmetrically fixedly installed on the left and right sides of the frame. The second air cylinder is fixedly installed at the output end of the first servo electric cylinder, and the horizontal plate is fixedly installed at the output end of the second air cylinder.

[0012] Furthermore, the upper and lower covering components include: a movable compaction component and a cutting component. Two movable compaction components are installed on the upper side of the frame to move and compact the protective film on the upper and lower surfaces and the front sidewall of the battery. The two movable compaction components are symmetrically distributed on the frame. A cutting component is installed on the upper side of the frame to cut the protective film after the upper and lower surfaces are applied.

[0013] Furthermore, the movable compaction assembly includes: a sliding plate, a second servo cylinder, and a guide wheel. The sliding plate is slidably connected to the frame, the second servo cylinder is fixedly mounted on the frame, the output end of the second servo cylinder is fixedly connected to the sliding plate, and the guide wheel is rotatably connected to the side of the sliding plate away from the output end of the second servo cylinder via a rotating shaft.

[0014] Furthermore, the cutting assembly includes a second linear module and a cutting blade, wherein the second linear module is fixedly mounted on the frame and the cutting blade is fixedly mounted on the output end of the second linear module.

[0015] Furthermore, the bonding mechanism includes a lifting and receiving assembly and a four-sided bonding assembly. The lifting and receiving assembly is installed on the rear side of the frame, and the four-sided bonding assembly is installed on the frame.

[0016] Furthermore, the lifting and receiving assembly includes: a third linear module, a fourth linear module, and a second gripper cylinder. The third linear module is fixedly installed on the rear side of the frame, the fourth linear module is fixedly installed on the output end of the third linear module, and the second gripper cylinder is fixedly installed on the output end of the fourth linear module. The four-sided bonding assembly includes: a fifth linear module, a third gripper cylinder, a third cylinder, a long L-shaped plate, and a short L-shaped plate. The fifth linear module is fixedly installed on the frame, the third gripper cylinder is fixedly installed on the middle side of the output end of the fifth linear module, the two third cylinders are symmetrically fixedly installed on the output end of the fifth linear module, the long L-shaped plate is fixedly installed on the output end of the third gripper cylinder, and the short L-shaped plate is fixedly installed on the output end of the third cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention drives the battery to move by a moving component. The output end of the second servo cylinder of the upper and lower covering components of the battery wrapping mechanism moves towards the battery, driving the sliding plate to move towards the battery. The sliding plate moves towards the battery, driving the guide wheel to move towards the battery. The two guide wheels press on the upper and lower surfaces of the battery respectively. At this time, when the moving component clamps the battery and moves backward, the guide wheel presses the film on the upper and lower surfaces of the battery to eliminate most of the air bubbles and make it further adhere to the battery shell. The cutting component cuts the protective film. The battery continues to move. After moving to the preset position, the output end of the second servo cylinder continues to move towards the battery, driving the guide wheel to move. The upper guide wheel first moves downward to adhere the protective film on the upper side of the front side wall of the battery to the upper side of the front side wall of the battery. After the upper guide wheel returns to the initial position, the lower guide wheel moves upward to adhere the protective film on the lower side of the front side wall of the battery to the lower side of the front side wall of the battery. At this time, the protective film has been adhered to the front and rear side walls and the upper and lower surfaces of the battery, which is conducive to quickly applying the protective film to the upper and lower surfaces and the front and rear surfaces of the battery and eliminating air bubbles at the same time. 2. After the protective film is attached to the rear side wall and upper and lower surfaces of the battery, it moves to the position of the second gripper cylinder of the lifting receiving assembly of the bonding mechanism. After the second gripper cylinder clamps the battery, the output end of the fourth linear module moves downward, driving the second gripper cylinder and the battery to move downward. The output end of the third linear module moves backward, driving the battery to move backward. The output end of the fifth linear module of the four-sided bonding assembly moves, driving the third gripper cylinder and the third cylinder to move towards the battery. The output end of the third cylinder extends, driving the short L-shaped plate to move towards the battery, attaching the excess protective film on the front and back of one side of the battery to one side of the battery. The output end of the third gripper cylinder moves, driving the two long L-shaped plates to move towards the battery, attaching the excess protective film on the upper and lower sides of one side of the battery to one side of the battery. This facilitates the rapid further bonding of the protective film on the battery side wall to complete the battery wrapping. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a front view of the present invention; Figure 3 This is a top view of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the structure of the present invention with part of the frame removed; Figure 6 This is a partial structural schematic diagram of the membrane unfolding mechanism of the present invention; Figure 7 This is a partial structural schematic diagram of the battery packaging mechanism of the present invention; Figure 8 This is a partial structural schematic diagram of the mobile component of the present invention; Figure 9 This is a partial structural schematic diagram of the bonding mechanism of the present invention; Figure 10 This is a partial structural schematic diagram of the four-sided bonding component of the present invention.

[0020] The labels in the diagram represent: 1. Frame; 2. Film unfolding mechanism; 21. Main roller; 22. Secondary roller; 23. First slider; 24. Tensioning roller; 25. Auxiliary roller; 26. Second slider; 27. First cylinder; 28. First linear module; 29. ​​First gripper cylinder; 210. Clamping plate; 3. Battery wrapping mechanism; 31. First servo cylinder; 32. Second cylinder; 33. Horizontal plate; 34. Sliding plate; 35. Second servo cylinder; 36. Guide wheel; 37. Second linear module; 38. Cutting blade; 4. Laminating mechanism; 41. Third linear module; 42. Fourth linear module; 43. Second gripper cylinder; 44. Fifth linear module; 45. Third gripper cylinder; 46. Third cylinder; 47. Long L-shaped plate; 48. Short L-shaped plate. Detailed Implementation

[0021] 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] The present invention will be further described below with reference to embodiments.

[0023] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0024] Example 1: In some examples, please refer to Figures 1-10 A lithium battery protective film coating device includes a frame 1, and further includes a film unfolding mechanism 2, a battery wrapping mechanism 3, and a bonding mechanism 4. The film unfolding mechanism 2 for unwinding and flattening the protective film is installed on one side of the frame 1, the battery wrapping mechanism 3 for wrapping the battery is installed on one side of the frame 1, and the bonding mechanism 4 for side bonding of the wrapped battery is installed on the upper side of the frame 1.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the film unfolding mechanism 2 includes an unwinding assembly and an alternating unfolding assembly. An unwinding assembly for assisting unwinding the film is installed on the upper side of the frame 1, and an alternating unfolding assembly for alternately unfolding the film is installed on the upper side of the frame 1.

[0026] The battery wrapping mechanism 3 includes a moving component and an upper and lower wrapping component. The moving component for clamping and moving the battery is installed on the upper side of the frame 1, and the wrapping component for covering and wrapping the upper and lower surfaces of the battery is installed on the upper side of the frame 1.

[0027] The unwinding assembly includes a release assembly and a limiting assembly, wherein the release assembly is mounted on the upper side of the frame 1 and the limiting assembly is mounted on the upper side of the frame 1.

[0028] like Figure 5 , Figure 6 As shown, the release assembly includes a main roller 21, a secondary roller 22, a first slider 23, and a tension roller 24. The main roller 21 is rotatably connected to the frame 1 via a damping shaft. The multiple secondary rollers 22 are rotatably connected to the frame 1 via shafts. The first slider 23 is slidably connected to the frame 1. The tension roller 24 is rotatably connected to the first slider 23 via a shaft.

[0029] like Figure 6 As shown, the limiting assembly includes: an auxiliary roller 25, a second slider 26, and a first cylinder 27. The auxiliary roller 25 is rotatably connected to the frame 1 via a rotating shaft. The second slider 26 is slidably connected to the frame 1. The first cylinder 27 is fixedly installed on the frame 1. The output end of the first cylinder 27 is fixedly connected to the second slider 26. The end of the second slider 26 away from the first cylinder 27 is in close contact with the outer ring sidewall of the auxiliary roller 25.

[0030] The protective film is placed on the main roller 21 of the release assembly of the unwinding assembly. After the protective film is unwound, it passes through the secondary roller 22, the tension roller 24 and the auxiliary roller 25 in sequence. The tension roller 24 slides up and down on the frame 1 with the first slider 23 under its own weight, applying a certain tension to the protective film. When the protective film is released, the output end of the first cylinder 27 of the limiting assembly extends and drives the second slider 26 to move towards the auxiliary roller 25, restricting the protective film so that it does not slide down too quickly, avoiding wrinkles caused by the lower protective film being too long. This is beneficial for unwinding the film and avoids wrinkles caused by the film moving too long up and down.

[0031] The alternating deployment assembly includes a first drive assembly and a clamping assembly. The two first drive assemblies are respectively installed on the left and right sides of the frame 1, and the clamping assembly is installed on the output end of the first drive assembly.

[0032] The first driving component includes a first linear module 28, which is fixedly mounted on the upper side of the frame 1. The clamping component includes a first gripper cylinder 29 and a clamping plate 210. The first gripper cylinder 29 is fixedly mounted on the output end of the first linear module 28, and the clamping plate 210 is fixedly mounted on the output end of the first gripper cylinder 29.

[0033] The alternating unfolding component of the film unfolding mechanism 2 moves the output end of the first gripper cylinder 29, which drives the clamping plate 210 to move, clamping the protective film. The two clamping components clamp the protective plate in the vertical direction at the same time. The output ends of the first linear modules 28 of the two first drive components move closer to each other, so that the clamping components clamp the protective film closer to each other. At the same time, the moving component clamps the moving battery and moves, so that the protective film covers the rear side wall and upper and lower surfaces of the battery.

[0034] like Figure 8 As shown, the moving component includes: a first servo electric cylinder 31, a second cylinder 32, and a horizontal plate 33. The two first servo electric cylinders 31 are symmetrically fixedly installed on the left and right sides of the frame 1. The second cylinder 32 is fixedly installed on the output end of the first servo electric cylinder 31. The horizontal plate 33 is fixedly installed on the output end of the second cylinder 32. The first servo electric cylinder 31 is configured as a servo electric cylinder with a guide rod.

[0035] The first servo cylinder 31 of the moving component of the membrane unfolding mechanism 2 moves forward, driving the second cylinder 32 and the horizontal plate 33 to move forward. The output end of the second cylinder 32 extends, driving the horizontal plate 33 to move towards the battery and clamp the battery. The output end of the first servo cylinder 31 moves backward, driving the battery to move backward. The battery moves between the protective film clamped by the two clamping components. At the same time, the clamping components clamp the protective film closer to each other, so that the protective film adheres to the rear side wall of the battery and then adheres to the upper and lower surfaces of the battery.

[0036] Example 2: In some embodiments, such as Figures 1-10 As shown, in a preferred embodiment of the present invention, the upper and lower covering components include: a movable compaction component and a cutting component. Two movable compaction components are installed on the upper side of the frame 1 to move and compact the protective film on the upper and lower surfaces and the front sidewall of the battery. The two movable compaction components are symmetrically distributed on the frame 1. A cutting component is installed on the upper side of the frame 1 to cut the protective film after the upper and lower surfaces are applied.

[0037] like Figure 7 As shown, the movable compaction assembly includes: a sliding plate 34, a second servo cylinder 35, and a guide wheel 36. The sliding plate 34 is slidably connected to the frame 1. The second servo cylinder 35 is fixedly installed on the frame 1. The output end of the second servo cylinder 35 is fixedly connected to the sliding plate 34. The guide wheel 36 is rotatably connected to the side of the sliding plate 34 away from the output end of the second servo cylinder 35 via a rotating shaft.

[0038] The output end of the second servo cylinder 35 of the upper and lower covering components of the battery wrapping mechanism 3 moves towards the battery, driving the sliding plate 34 to move towards the battery. The sliding plate 34 moves towards the battery, driving the guide rollers 36 to move towards the battery. The two guide rollers 36 press against the upper and lower surfaces of the battery respectively. At this time, when the moving component clamps the battery and moves backward, the guide rollers 36 compact the film on the upper and lower surfaces of the battery, eliminating most of the air bubbles and making it further adhere to the battery casing. The cutting component cuts the protective film, and the battery continues to move until it reaches the pre-set position. After the position is set, the output end of the second servo cylinder 35 continues to move towards the battery, driving the guide wheel 36 to move. The upper guide wheel 36 first moves downward to attach the protective film on the upper side of the front side wall of the battery to the upper side of the front side wall of the battery. After the upper guide wheel 36 returns to the initial position, the lower guide wheel 36 moves upward to attach the protective film on the lower side of the front side wall of the battery to the lower side of the front side wall of the battery. At this time, the protective film has been attached to the front and rear side walls and the upper and lower surfaces of the battery, which is conducive to quickly attaching the protective film to the upper and lower surfaces and the front and rear surfaces of the battery and eliminating air bubbles at the same time, resulting in high production efficiency.

[0039] The cutting assembly includes a second linear module 37 and a cutting blade 38. The second linear module 37 is fixedly mounted on the frame 1, and the cutting blade 38 is fixedly mounted on the output end of the second linear module 37.

[0040] After the protective film is attached to the rear side wall and upper and lower surfaces of the battery, the output end of the second linear module 37 of the cutting component moves, driving the cutting blade 38 to move and cut the protective film held by the lower side of the upper clamping component clamping plate 210. At this time, the battery continues to move backward a preset distance and is clamped by the bonding mechanism 4. The upper clamping component clamps the protective film and moves downward. At the same time, the first gripper cylinder 29 of the lower clamping component opens, causing the clamping plate 210 to open, making room for the clamping plate 210 of the upper clamping component. At this time, the upper and lower clamping components exchange positions, and the next round of protective film unfolding operation can be carried out.

[0041] Example 3: In some embodiments, such as Figures 1-10 As shown, in a preferred embodiment of the present invention, the bonding mechanism 4 includes: a lifting receiving assembly and a four-sided bonding assembly. The lifting receiving assembly is installed on the rear side of the frame 1, and the four-sided bonding assembly is installed on the frame 1.

[0042] like Figure 9 , Figure 10As shown, the lifting and receiving assembly includes: a third linear module 41, a fourth linear module 42, and a second gripper cylinder 43. The third linear module 41 is fixedly installed on the rear side of the frame 1, the fourth linear module 42 is fixedly installed on the output end of the third linear module 41, and the second gripper cylinder 43 is fixedly installed on the output end of the fourth linear module 42. The four-sided bonding assembly includes: a fifth linear module 44, a third gripper cylinder 45, a third cylinder 46, a long L-shaped plate 47, and a short L-shaped plate 48. The fifth linear module 44 is fixedly installed on the frame 1, the third gripper cylinder 45 is fixedly installed on the middle side of the output end of the fifth linear module 44, the two third cylinders 46 are symmetrically fixedly installed on the output end of the fifth linear module 44, the long L-shaped plate 47 is fixedly installed on the output end of the third gripper cylinder 45, and the short L-shaped plate 48 is fixedly installed on the output end of the third cylinder 46.

[0043] After the protective film is attached to the rear side wall and upper and lower surfaces of the battery, it moves to the position of the second gripper cylinder 43 of the lifting receiving assembly of the bonding mechanism 4. After the second gripper cylinder 43 clamps the battery, the output end of the fourth linear module 42 moves downward, driving the second gripper cylinder 43 and the battery to move downward. The output end of the third linear module 41 moves backward, driving the battery to move backward. The output end of the fifth linear module 44 of the four-sided bonding assembly moves, driving the third gripper cylinder 45 and the third cylinder 46 to move towards the battery. The output end of the third cylinder 46 extends, driving the short L-shaped plate 48 to move towards the battery, attaching the excess protective film on the front and back of one side of the battery to one side of the battery. The output end of the third gripper cylinder 45 moves, driving the two long L-shaped plates 47 to move towards the battery, attaching the excess protective film on the upper and lower sides of one side of the battery to one side of the battery. This facilitates the rapid further bonding of the protective film on the battery side wall to complete the battery wrapping.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lithium battery protective film coating device, comprising a frame (1), characterized in that, It also includes: a film unfolding mechanism (2), a battery wrapping mechanism (3) and a bonding mechanism (4). The film unfolding mechanism (2) for unwinding and flattening the protective film is installed on one side of the frame (1). The battery wrapping mechanism (3) for wrapping the battery is installed on one side of the frame (1). The bonding mechanism (4) for side bonding of the wrapped battery is installed on the upper side of the frame (1). The film unfolding mechanism (2) includes: an unwinding assembly and an alternating unfolding assembly. An unwinding assembly for assisting unwinding the film is installed on the upper side of the frame (1), and an alternating unfolding assembly for alternately unfolding the film is installed on the upper side of the frame (1). The battery wrapping mechanism (3) includes a moving component and an upper and lower wrapping component. The upper side of the frame (1) is equipped with a moving component for clamping and moving the battery, and the upper side of the frame (1) is equipped with a wrapping component for covering and wrapping the upper and lower surfaces of the battery.

2. The lithium battery protective film coating equipment according to claim 1, characterized in that, The unwinding assembly includes a release assembly and a limiting assembly, wherein the release assembly is mounted on the upper side of the frame (1) and the limiting assembly is mounted on the upper side of the frame (1).

3. The lithium battery protective film coating equipment according to claim 2, characterized in that, The alternating deployment assembly includes a first drive assembly and a clamping assembly. The two first drive assemblies are respectively installed on the left and right sides of the frame (1), and the clamping assembly is installed at the output end of the first drive assembly.

4. The lithium battery protective film coating equipment according to claim 3, characterized in that, The first drive assembly includes: a first linear module (28), which is fixedly mounted on the upper side of the frame (1). The clamping assembly includes: a first gripper cylinder (29) and a clamping plate (210), which is fixedly mounted on the output end of the first linear module (28) and the output end of the first gripper cylinder (29) is fixedly mounted with the clamping plate (210).

5. The lithium battery protective film coating equipment according to claim 4, characterized in that, The moving component includes: a first servo electric cylinder (31), a second cylinder (32) and a horizontal plate (33). The two first servo electric cylinders (31) are symmetrically fixedly installed on the left and right sides of the frame (1). The second cylinder (32) is fixedly installed at the output end of the first servo electric cylinder (31). The horizontal plate (33) is fixedly installed at the output end of the second cylinder (32).

6. The lithium battery protective film coating equipment according to claim 5, characterized in that, The upper and lower covering components include: a moving compaction component and a cutting component. Two moving compaction components are installed on the upper side of the frame (1) to move and compact the protective film on the upper and lower surfaces and the front side wall of the battery. The two moving compaction components are symmetrically distributed on the frame (1). A cutting component is installed on the upper side of the frame (1) to cut the protective film after the upper and lower surfaces are applied.

7. The lithium battery protective film coating equipment according to claim 6, characterized in that, The moving compaction assembly includes a sliding plate (34), a second servo cylinder (35), and a guide wheel (36). The sliding plate (34) is slidably connected to the frame (1). The second servo cylinder (35) is fixedly installed on the frame (1). The output end of the second servo cylinder (35) is fixedly connected to the sliding plate (34). The guide wheel (36) is rotatably connected to the side of the sliding plate (34) away from the output end of the second servo cylinder (35) via a rotating shaft.

8. The lithium battery protective film coating equipment according to claim 7, characterized in that, The cutting assembly includes a second linear module (37) and a cutting blade (38). The second linear module (37) is fixedly mounted on the frame (1), and the cutting blade (38) is fixedly mounted on the output end of the second linear module (37).

9. The lithium battery protective film coating equipment according to claim 8, characterized in that, The bonding mechanism (4) includes a lifting receiving component and a four-sided bonding component. The lifting receiving component is installed on the rear side of the frame (1), and the four-sided bonding component is installed on the frame (1).

10. The lithium battery protective film coating equipment according to claim 9, characterized in that, The lifting and receiving assembly includes: a third linear module (41), a fourth linear module (42), and a second gripper cylinder (43). The third linear module (41) is fixedly installed on the rear side of the frame (1). The fourth linear module (42) is fixedly installed on the output end of the third linear module (41). The second gripper cylinder (43) is fixedly installed on the output end of the fourth linear module (42). The four-sided bonding assembly includes: a fifth linear module (44), a third gripper cylinder (45), and a third cylinder (46). 46), long L-shaped plate (47) and short L-shaped plate (48), the fifth linear module (44) is fixedly installed on the frame (1), the third gripper cylinder (45) is fixedly installed on the middle side of the output end of the fifth linear module (44), the two third cylinders (46) are symmetrically fixedly installed at the output end of the fifth linear module (44), the long L-shaped plate (47) is fixedly installed at the output end of the third gripper cylinder (45), and the short L-shaped plate (48) is fixedly installed at the output end of the third cylinder (46).

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