High-speed film coating device for square-shell battery cell

Abstract

The utility model relates to a high-speed film coating device for a square-shell battery cell, which comprises a battery cell transplanting mechanism, and a feeding unit, a film clamping and pulling unit, a large surface film coating unit, a post terminal surface film coating unit and a side surface film coating unit are sequentially arranged above the battery cell transplanting mechanism along the conveying direction of the battery cell transplanting mechanism. A plurality of battery cell positioning seats are matched to shorten the process rhythm and can be directly compatible with an external conveying line, so that the conveying time is shortened; the film clamping and pulling unit can be used for quickly adjusting the access size of a coating film and improving the compatibility with different types of battery cell products; the distance between the compression rollers for coating the battery cell can be adjusted through the driving device, so that the compression rollers can be quickly compatible with different types of battery cell products; the device is driven by a servo motor in cooperation with an air cylinder or an electric cylinder to conduct linear motion, and efficient automatic control can be achieved through a PLC. And elastic pieces are additionally arranged at the connecting parts of the compression rollers, so that the battery cell products and external envelopes are prevented from being damaged in the enveloping process.

Description

Technical Field

[0001] The utility model relates to the technical field of square shell battery film wrapping equipment, in particular to a high-speed film wrapping device for square shell battery cores. Background Art

[0002] Due to the continuous pursuit of sustainable and clean energy by humans, traditional petrochemical energy can no longer meet people's needs. As a clean energy source, new energy batteries have the advantages of high efficiency, cleanness, safety, reliability, etc., and have become a hot spot in current energy development.

[0003] With the rapid development of new energy vehicles, lithium battery PACK, as the most commonly used power module for new energy vehicles, is widely used, and square shell lithium batteries are the most basic components in the PACK package. Before assembly, square shell lithium batteries need to be film wrapped. The main purpose is to protect the internal components of the battery, prevent the external environment from damaging the battery, and ensure the safety and performance of the battery.

[0004] Currently, to ensure the film wrapping accuracy, the square shell lithium battery needs to be positioned through a multi-axis manipulator for multiple times. When the battery model changes, it is difficult for the equipment to be compatible, and the operation is complex and the processing efficiency is low; at the same time, the film wrapping accuracy of square shell lithium batteries is insufficient.

[0005] Therefore, in view of the deficiencies in the existing technology, it is necessary to design a high-speed film wrapping device for square shell battery cores to solve the above problems.

[0006] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solution of the present utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above content is well-known to those skilled in the art just because these contents are described in the background art of the present utility model. Content of the Utility Model

[0007] To overcome the above deficiencies in the existing technology, the purpose of the present utility model is to disclose a high-speed film wrapping device for square shell battery cores, which solves the problems of low processing efficiency, poor accuracy, and poor compatibility with battery cores of different sizes in the traditional square shell battery core film wrapping process.

[0008] The present utility model discloses a high-speed film wrapping device for square shell battery cores, including a battery core transplanting unit. Along the conveying direction above the battery core transplanting unit, a feeding unit, a film clamping and pulling unit, a large film wrapping unit, a pole column film wrapping unit, and a side film wrapping unit are sequentially arranged, wherein:

[0009] The battery cell transplanting unit includes a battery cell conveyor rack arranged along its conveying direction. The battery cell conveyor rack is provided with a number of battery cell positioning seats along the conveying direction. The square shell battery cells conveyed are positioned through the battery cell positioning seats, increasing the corresponding accuracy of the square shell battery cells during the processing process with the feeding unit, the film clamping and pulling unit, the large film wrapping unit, the pole column film wrapping unit, and the side film wrapping unit. Below the battery cell positioning seat, there is a positioning lifting mechanism. The output end of the positioning lifting mechanism passes through the battery cell positioning seat to position and lift the battery cell product thereon. Below the positioning lifting mechanism, there is a first horizontal moving mechanism that can drive it to move along the direction where the battery cell conveyor rack is arranged, replacing the traditional multi-axis manipulator to convey the battery cell product to the processing operation area in a step-by-step manner. On both sides of the first horizontal moving mechanism, there are also a second horizontal moving mechanism and a third horizontal moving mechanism that are consistent with its conveying direction. The large film wrapping unit is arranged at the output end of the second horizontal moving mechanism, and the pole column film wrapping unit is arranged at the output end of the third horizontal moving mechanism.

[0010] Preferred technical solution: The feeding unit includes a feeding module arranged along the conveying direction of the battery cell transplanting unit. At the output end of the feeding module, there is a first positioning jaw for clamping the battery cell product horizontally. The first positioning jaw can position and clamp the battery cell product on the output end after being lifted by the positioning lifting mechanism, and is used for transporting and large film wrapping of the battery cell product.

[0011] Preferred technical solution: The film clamping and pulling unit includes a film wrapping clamping mechanism and a first lifting drive. At the lower end of the film wrapping clamping mechanism, there is a film wrapping suction cup. The film wrapping clamping mechanism is used for clamping and fixing the film wrapping feed, and the suction cup is used for positioning and adsorbing it after the film wrapping is cut. At the output end of the first lifting drive, there are a film pulling jaw and a second positioning jaw for clamping the battery cell vertically. The film pulling jaw is arranged corresponding to the film wrapping clamping mechanism. By clamping the film wrapping with the film pulling jaw and driven by the first lifting drive, the film wrapping is pulled into the film wrapping operation area, and the pulled-out size of the film wrapping can be quickly adjusted according to the different sizes of the battery cell products. The longitudinal distance between the second positioning jaw and the film pulling jaw is adjustable. The second positioning jaw can clamp and position the battery cell product on the first positioning jaw, and is used for being compatible with different models of battery cell products to ensure the positioning accuracy of the battery cell products.

[0012] Preferred technical solution: The large film wrapping unit includes a film wrapping frame. The first positioning jaw can clamp the battery cell product and pass through the film wrapping frame. On the upper and lower sides of the film wrapping frame, there are symmetrically arranged two large surface pressing rollers that can move vertically. The rotating shafts of the large surface pressing rollers are arranged horizontally and perpendicular to the conveying direction of the battery cell transplanting unit, and are used for wrapping the large surface of the battery cell product. On the left and right sides of the film wrapping frame, there are symmetrically arranged side pressing rollers that can move relatively along the set direction. The rotating shafts of the side pressing rollers are arranged vertically, and are used for folding the corners at the side film wrapping position of the battery cell product to avoid local accumulation of the film wrapping at the corners of the battery cell product during the subsequent side film wrapping process.

[0013] Preferred technical solution: The spacing between the two large-surface pressing rollers can be controlled by the second lifting drive, which is used to be compatible with different models of battery cell products, avoiding collisions between the battery cell products and the large-surface pressing rollers during film wrapping; an elastic member is connected between the large-surface pressing rollers and the film wrapping frame, which is used to improve the fitting degree between the large-surface pressing rollers and the battery cell products during the large-surface film wrapping process of the battery cell products, and at the same time provide buffering to avoid film wrapping damage caused by excessive instantaneous force; the relative movement of the side pressing rollers along the set direction is driven by an electric cylinder, which is used to be compatible with different models of battery cell products, ensure the spacing accuracy of the side pressing rollers, and improve the film wrapping quality at the corners of the battery cell products.

[0014] Preferred technical solution: A film cutting assembly that outputs in the horizontal direction is also provided on the film wrapping frame, which is used to divide the film wrapped at the film clamping and pulling unit.

[0015] Preferred technical solution: The pole-column film wrapping unit includes a pole-column rolling frame. A third lifting drive that outputs in the vertical direction is provided on the pole-column rolling frame. The output end of the third lifting drive is connected with a pole-column pressing roller arranged horizontally. The rotating shaft of the pole-column pressing roller is arranged horizontally and is perpendicular to the conveying direction of the battery cell transplanting unit. Both ends of the pole-column pressing roller are slidably arranged on the pole-column rolling frame in the vertical direction. Through the cooperation of the third lifting drive and the third horizontal moving mechanism below the pole-column film wrapping unit, the pole-column film wrapping unit can be quickly compatible with different models of battery cell products, and at the same time improve the film wrapping operation accuracy.

[0016] Preferred technical solution: The side film wrapping unit includes a side film wrapping frame. Side pressing rollers that can slide in the vertical direction are symmetrically arranged on both sides of the side film wrapping frame. The side pressing rollers are controlled by a fourth lifting drive to perform lifting movements, which are used to perform film wrapping operations on the sides of the battery cell products; horizontal drives that can adjust their horizontal spacing are provided at the rear ends of the two side pressing rollers. The rotating shafts of the side pressing rollers are arranged vertically, which is used to ensure compatibility with different models of battery cell products; a fifth lifting drive is also provided above the side film wrapping frame. The output end of the fifth lifting drive can press and position the battery cell products on the positioning lifting mechanism in the vertical direction, avoiding the influence on the film wrapping accuracy caused by the shaking of the battery cells during the film wrapping process.

[0017] Preferred technical solution: The battery cell transplanting unit is driven by a servo motor to ensure its conveying efficiency and accuracy.

[0018] Due to the application of the above technical solutions, the beneficial effects of the high-speed film wrapping device for a square-shell battery cell of the present utility model are as follows:

[0019] (1) The battery cell products are conveyed in a step-by-step manner. By cooperating with multiple battery cell positioning seats, the process cycle is shortened, and it can be directly compatible with the external conveying line, reducing the conveying time;

[0020] (2) The clamping and stretching film unit can quickly adjust the access size of the packaging film, and is also provided with a second positioning jaw for adjusting the feeding positioning of the battery core product, improving the compatibility with battery core products of different models.

[0021] (3) The spacing of the pressing rollers for the battery core packaging film can be adjusted through the driving device, enabling it to quickly be compatible with battery core products of different models.

[0022] (4) The driving of the device all adopts a servo motor in cooperation with a cylinder or an electric cylinder for linear motion, without the need to use a multi-axis manipulator, reducing the control difficulty, and high-efficiency automatic control can be achieved using a PLC.

[0023] (5) Elastic parts are added at the joints of the pressing rollers to avoid damage to the battery core product and the external packaging film during the packaging process. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of a high-speed packaging film device for a square shell battery core of the present utility model.

[0025] Figure 2 It is a schematic structural diagram of the feeding unit in the present utility model.

[0026] Figure 3 It is a schematic structural diagram of the clamping and stretching film unit in the present utility model.

[0027] Figure 4 It is a schematic structural diagram of the battery core transplanting unit in the present utility model.

[0028] Figure 5 It is a schematic structural diagram of the large surface film packaging unit in the present utility model.

[0029] Figure 6 It is a schematic structural diagram of the pole column surface film packaging unit in the present utility model.

[0030] Figure 7 It is a schematic structural diagram of the side surface film packaging unit in the present utility model. Detailed Embodiments

[0031] The following specific embodiments illustrate the implementation manners of the present utility model. Those familiar with this technology can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component must be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection, an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0034] Embodiment:

[0035] As Figure 1 shown, a high-speed film wrapping device for a square shell battery cell disclosed by the present utility model includes a battery cell transplanting unit 3. Above the battery cell transplanting unit 3, in the conveying direction thereof, there are successively arranged a feeding unit 1, a film clamping and pulling unit 2, a large film wrapping unit 4, a pole column film wrapping unit 5, and a side film wrapping unit 6. The following will make a specific description of the main components of the above present utility model:

[0036] As Figure 1 and Figure 4As shown, the cell transplanting unit 3 is driven by a servo motor, and its structure includes a cell conveying rack 311 arranged on a workbench 31 along its conveying direction, and the cell conveying rack 311 is provided with five cell positioning seats 312 along the conveying direction, and a positioning and lifting mechanism 33 is provided below the cell positioning seat 312, and the positioning and lifting mechanism 33 includes a connecting plate 332, and a lifting cylinder 333 corresponding to the cell positioning seat 312 is provided on the connecting plate 332, and the output end of the lifting cylinder 333 is provided with a mounting plate 331, and the mounting plate 331 passes through the cell positioning seat 312 to lift the cell products thereon, and at the same time, a limiting block 334 for limiting and fixing the cell products is provided on the mounting plate 331. A positioning mechanism 35 is also provided on the mounting plate 331, and the positioning mechanism 35 includes a reset cylinder 351, and a positioning block 352 for positioning the cell products in the horizontal direction is provided at the output end of the reset cylinder 351.

[0037] like Figure 1 and Figure 4 As shown, a first horizontal moving mechanism 32 is provided below the positioning and lifting mechanism 33 to drive it to move along the setting direction of the battery cell conveying frame 311. A second horizontal moving mechanism 36 and a third horizontal moving mechanism 34 are also provided on both sides of the first horizontal moving mechanism 32 in the same conveying direction. The second horizontal moving mechanism 36 includes a second fixing frame 363 for fixing, a first electric cylinder 361 is provided on the second fixing frame 363, and a floating joint 362 is provided at the output end of the first electric cylinder 361; a second guide slider 364 corresponding to the first electric cylinder 361 is provided on the workbench 31, and the large mask wrapping unit 4 is provided on the second guide slider 364 and is transmission-connected to the floating joint 362; the third horizontal moving mechanism 34 includes a third fixing frame 341 provided on the workbench 31, a third cylinder 343 on the third fixing frame 341, and a third guide slider 342 corresponding to the third cylinder 343 is provided on the workbench 31. The pole wrapping film unit 5 is provided with a third guide slider 342 and is transmission-connected to the output end of the third cylinder 343.

[0038] like Figure 1 and Figure 2As shown in the figure, the feeding unit 1 includes a feeding module 14 arranged along the conveying direction of the battery cell transplanting unit 3. The feeding module 14 is fixed on the feeding substrate 12, and the feeding substrate 12 is fixed on the working table 31 through the feeding base 11. At the output end of the feeding module 14, there is a first positioning jaw 13 for clamping the battery cell product in the horizontal direction. The first positioning jaw 13 can position and clamp the battery cell product on the output end after being lifted by the positioning lifting mechanism 33. The first positioning jaw 13 includes a jaw connecting plate 132 arranged at the output end of the feeding module 14. The jaw connecting plate 132 is fixed with a jaw mounting plate 134. A jaw opening and closing driving cylinder 131 is installed on the jaw mounting plate 134. The jaw opening and closing driving cylinder 131 clamps the battery cell product through the opening and closing of its output end. A reinforcing rib 133 is provided between the jaw connecting plate 132 and the jaw mounting plate 134.

[0039] As Figure 1 , Figure 2 and Figure 3 shown in the figure, the film clamping and pulling unit 2 is arranged on the working table 31 through the film clamping and pulling mounting plate 21. The film clamping and pulling mounting plate 21 is provided with a film wrapping clamping mechanism 23 and a first lifting drive 22. The film wrapping clamping mechanism 23 includes a film wrapping clamping cylinder 231. The film wrapping clamping cylinder 231 is arranged on the film wrapping clamping fixing plate 233. At the output end of the film wrapping clamping cylinder 231, there is a film wrapping inner pushing plate 232. Opposite to the outside of the film wrapping inner pushing plate 232, there are film wrapping outer clamping plates 234. Below the film wrapping outer clamping plates 234, there is a film wrapping suction cup 235. At the output end of the first lifting drive 22, there are a film pulling jaw 24 and a second positioning jaw 25 for clamping the battery cell in the vertical direction. The film pulling jaw 24 is arranged corresponding to the film wrapping clamping mechanism 23. The longitudinal distance between the second positioning jaw 25 and the film pulling jaw 24 is adjustable. The second positioning jaw 25 can clamp and position the battery cell product on the first positioning jaw 13. Because the clamping directions of the second positioning jaw 25 and the first positioning jaw 13 are perpendicular to each other, the positioning of the battery cell product is more accurate.

[0040] As Figure 1 and Figure 3 shown in the figure, the film pulling jaw 24 includes a film pulling jaw mounting plate 241 arranged at the output end of the first lifting drive 22. The film pulling jaw mounting plate 241 is provided with a jaw opening and closing control cylinder 242. At the output end of the jaw opening and closing control cylinder 242, there is a jaw structure 243.

[0041] As Figure 1 , Figure 2 and Figure 5As shown, the large surface film wrapping unit 4 includes a film wrapping frame 41. The first positioning jaw 13 can hold the battery cell product and pass through the film wrapping frame 41. On the upper and lower sides of the film wrapping frame 41, two large surface pressing rollers that can move vertically are symmetrically arranged. The rotation shafts of the large surface pressing rollers are arranged horizontally and perpendicular to the conveying direction of the battery cell transplanting unit 3. On the left and right sides of the film wrapping frame 41, side pressing rollers that can move relatively along the set direction are symmetrically arranged. The rotation shafts of the side pressing rollers are arranged vertically.

[0042] As Figure 1 and Figure 5 As shown, the distance between the two large surface pressing rollers can be controlled by the second lifting drive 42. The second lifting drive 42 includes a lifting drive electric cylinder 421. A connecting and clamping part 424 is provided at the end of the large surface pressing roller. The output end of the lifting drive electric cylinder 421 is connected to the connecting and clamping part 424. An elastic part 423 is connected between the large surface pressing roller and the film wrapping frame 41 to prevent damage to the film when the large surface pressing roller rolls the film. The relative movement of the side pressing rollers along the set direction is driven by a film wrapping electric cylinder 44. A film cutting assembly 43 that outputs horizontally is also provided on the film wrapping frame 41. The film cutting assembly 43 includes a film cutting cylinder 431. A film cutting connecting part 432 is provided at the output end of the film cutting cylinder 431. A film cutting guiding connecting part 433 is provided on the film cutting connecting part 432. A film cutter 433 for dividing the film is provided at the end of the film cutting guiding connecting part 434. A film wrapping suction cup 422 for adsorbing the film is also provided on the film wrapping frame 41.

[0043] As Figure 1 and Figure 6 As shown, the pole column film wrapping unit 5 includes a pole column rolling frame 51. A third lifting drive 52 that outputs vertically is provided on the pole column rolling frame 51. The third lifting drive 52 includes a pole column lifting electric cylinder 521 fixed on the pole column rolling frame 51 through an electric cylinder fixing plate 522. A pole column lifting floating joint 527 is provided at the output end of the pole column lifting electric cylinder 521. A reinforcing rib plate 529 is provided at the electric cylinder fixing plate 522 to prevent the unstable output direction of the pole column lifting electric cylinder 521. The two shaft ends of the pole column pressing roller 528 are rotatably connected to a placement block 526. The placement block 526 is arranged on a placement plate 525. A lifting positioning connection block 524 for docking with the pole column lifting floating joint 527 is provided on the placement plate 525. The rotation shaft of the pole column pressing roller 528 is arranged horizontally and perpendicular to the conveying direction of the battery cell transplanting unit 3. The two ends of the placement plate 525 are arranged on the pole column rolling frame 51 in a vertically liftable manner through lift slide rails 523.

[0044] As Figure 1 and Figure 7As shown in the figure, the side film wrapping unit 6 includes a side film wrapping frame 61. On both sides of the side film wrapping frame 61, there are symmetrically arranged film pressing roller mechanisms 65 that can slide vertically. A side pressing roller 654 is arranged vertically on the film pressing roller mechanism 65. At both shaft ends of the side pressing roller 654, there are rotationally connected roller connecting blocks 655. The roller connecting blocks 655 are arranged on a fixed backing plate 653. The fixed backing plate 653 is arranged on an opposing telescopic cylinder 652. The opposing telescopic cylinder 652 is fixed on a side pressing roller positioning frame 651. The side pressing roller 654 performs a lifting motion through the control of a fourth lifting drive 64. The fourth lifting drive 64 includes a fourth lifting electric cylinder 641. The output end of the fourth lifting electric cylinder 641 is arranged on a fourth electric cylinder fixing plate 642. The fourth electric cylinder fixing plate 642 is arranged horizontally on the top of the side film wrapping frame 61. The output end of the fourth lifting electric cylinder 641 is provided with a fourth floating joint 646. The lower end of the fourth floating joint 646 is connected to a fourth lifting operation plate 645. On both sides of the fourth lifting operation plate 645, there are fourth connecting blocks 644. The fourth connecting blocks 644 are fixedly connected to the side pressing roller positioning frame 651. The outer sides of the fourth connecting blocks 644 are slidably connected to both sides of the side film wrapping frame 61 through guide rails 653, enabling the film pressing roller mechanism 65 to reciprocate vertically to roll-press the sides of the battery cell product.

[0045] As Figure 1 , Figure 4 and Figure 7 shown, above the side film wrapping frame 61, there is also a fifth lifting drive 63. The fifth lifting drive 63 includes a pressing cylinder 631. The output end of the pressing cylinder 631 is provided with a pressing block 632. The pressing block 632 can press and position the battery cell product on the positioning and lifting mechanism 33 vertically.

[0046] Referring Figures 1 to 7 to the figure shown, the method and principle of a high-speed film wrapping device for a square shell battery cell disclosed by the present utility model are as described below:

[0047] Action 1: The film pulling jaw 24 clamps the film and pulls out a preset size of the film through the first lifting drive 22. Then, the upper end of the film is doubly fixed through the film clamping mechanism 23 and the film suction cup 235. Finally, the cutting film cylinder 431 in the large film wrapping mechanism 4 drives the cutter 433 to divide the film between the film clamping cylinder 231 and the film suction cup 235. The upper end of the divided film is fixed by the film suction cup 235 and remains stationary. The film inlet end is locked by the extrusion of the film inner pushing plate 232 and the film outer clamping plate 234 to leave a film joint, facilitating the film pulling jaw 24 to clamp and pull again.

[0048] Action 2: The feeding unit 1 drives the component to move, enabling the front end of the battery cell product to contact the large film, and clamping and positioning the film conveying position of the battery cell product through the second positioning jaw 25.

[0049] Action Three: The first positioning jaw 13 clamps the battery cell product again, the second positioning jaw 25 opens, and the first positioning jaw 13 moves horizontally to pass the battery cell product through the film wrapping frame 41 of the large film wrapping unit 4. After being wrapped with film by the large film wrapping unit 4, it is received and placed in the battery cell positioning seat 312 by the positioning lifting mechanism 33. During the placement process, the battery cell product is aligned by the positioning mechanism 35.

[0050] Action Four: The positioning lifting mechanism 33 lifts the battery cell product and then drives it by the first horizontal movement mechanism 32 to the battery cell positioning seat 312 at the pole column film wrapping unit 5. After the battery cell product is positioned and aligned, it is lifted by the positioning lifting mechanism 33, and the pole column film wrapping unit 5 performs rolling film pressing on the pole column surface of the battery cell product.

[0051] Action Five: The positioning lifting mechanism 33 moves the battery cell product after pole column film pressing to the film wrapping position of the side film wrapping unit 6 through the first horizontal movement mechanism 32 for positioning. Then the positioning lifting mechanism 33 lifts the battery cell product, and the pressing cylinder 631 drives the pressing block to press the battery cell product from above to prevent it from swaying. Then the film pressing roller mechanism 65 performs rolling film pressing on the side film of the battery cell product.

[0052] The above embodiments only illustratively explain the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A high-speed film coating device for square shell batteries, comprising a battery cell transfer unit (3), wherein a feeding unit (1), a film clamping and pulling unit (2), a large surface film coating unit (4), a pole coating unit (5) and a side coating unit (6) are sequentially arranged above the battery cell transfer unit (3) along its conveying direction, characterized in that: The battery cell transplanting unit (3) comprises a battery cell conveying rack arranged along its conveying direction, the battery cell conveying rack is provided with a plurality of battery cell positioning seats along the conveying direction, a positioning and lifting mechanism is provided below the battery cell positioning seat, the output end of the positioning and lifting mechanism passes through the battery cell positioning seat to position and lift the battery cell products thereon, a first horizontal moving mechanism is provided below the positioning and lifting mechanism which can drive the battery cell conveying rack to move along the setting direction of the battery cell conveying rack, a second horizontal moving mechanism and a third horizontal moving mechanism which are consistent with the conveying direction are also provided on both sides of the first horizontal moving mechanism, the large face mask unit (4) is provided at the output end of the second horizontal moving mechanism, and the pole face mask unit (5) is provided at the output end of the third horizontal moving mechanism.

2. The high-speed film wrapping device for a square shell battery cell according to claim 1, wherein: The feeding unit (1) comprises a feeding module arranged along the conveying direction of the battery cell transplanting unit (3); the output end of the feeding module is provided with a first positioning clamping claw for clamping the battery cell product in the horizontal direction; the first positioning clamping claw can position and clamp the battery cell product on the output end after the positioning lifting mechanism is lifted.

3. The high-speed film wrapping device for a square shell battery cell according to claim 2, wherein: The film clamping and pulling unit (2) comprises a film clamping mechanism and a first lifting drive, wherein a film suction cup is provided at the lower end of the film clamping mechanism, and a film pulling clamp and a second positioning clamp for clamping the battery cell in a vertical direction are provided at the output end of the first lifting drive, wherein the film pulling clamp is arranged corresponding to the film clamping mechanism, and the longitudinal spacing between the second positioning clamp and the film pulling clamp is adjustable, and the second positioning clamp can clamp and position the battery cell product on the first positioning clamp.

4. The high-speed film wrapping device for a square shell battery cell according to claim 3, wherein: The large-surface film wrapping unit (4) comprises a film wrapping frame, the first positioning clamp can clamp the battery cell product to pass through the film wrapping frame, and two large-surface pressure rollers that can move in the vertical direction are symmetrically arranged on the upper and lower sides of the film wrapping frame, and the rotating shafts of the large-surface pressure rollers are arranged in the horizontal direction and are perpendicular to the conveying direction of the battery cell transplanting unit (3); side pressure rollers that can move relative to each other along the setting direction are symmetrically arranged on the left and right sides of the film wrapping frame, and the rotating shafts of the side pressure rollers are arranged in the vertical direction.

5. The high-speed film wrapping device for a square shell battery cell according to claim 4, wherein: The distance between the two large-surface pressing rollers can be controlled by a second lifting drive, an elastic member is connected between the large-surface pressing roller and the film-wrapping frame, and the relative movement of the side pressing rollers along the setting direction is driven by an electric cylinder.

6. The high-speed film wrapping device for a square shell battery cell according to claim 4, characterized in that: The film wrapping frame is also provided with a film cutting assembly output in a horizontal direction.

7. The high-speed film wrapping device for a square shell battery cell according to claim 1, characterized in that: The pole coating unit (5) comprises a pole rolling frame, the pole rolling frame is provided with a third lifting drive for outputting in a vertical direction, the output end of the third lifting drive is connected to a pole pressing roller arranged in a horizontal direction, the rotating shaft of the pole pressing roller is arranged in a horizontal direction and is perpendicular to the conveying direction of the battery cell transplanting unit (3), and the two ends of the pole pressing roller are slidably arranged on the pole rolling frame in a vertical direction.

8. The high-speed film wrapping device for a square shell battery cell according to claim 1, characterized in that: The side film wrapping unit (6) includes a side film wrapping frame, on both sides of which symmetrically arranged are side pressing rollers that can slide in the vertical direction. The side pressing rollers are controlled by a fourth lifting drive to perform lifting movements. At the rear ends of the two side pressing rollers are provided horizontal drives for adjusting their horizontal spacing, and the rotating shafts of the side pressing rollers are arranged in the vertical direction. Above the side film wrapping frame is also provided a fifth lifting drive, and the output end of the fifth lifting drive can press and position the battery cell product on the positioning and lifting mechanism in the vertical direction.

9. The high-speed film wrapping device for a square shell battery cell according to claim 1, characterized in that: The battery cell transplanting unit (3) is driven by a servo motor.

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