Battery pack film device

Abstract

This utility model relates to the field of battery processing equipment technology, and more particularly to a battery coating device. The battery coating device includes a feeding mechanism, a coating mechanism, a first feeding mechanism, and a second feeding mechanism. The feeding mechanism has a first feeding position and a second feeding position, and is configured to transfer batteries to either the first or second feeding position. Both the first and second feeding mechanisms hold blue film rolls. Either the first or second feeding mechanism is configured to feed blue film to the first feeding position, and the other is configured to feed blue film to the second feeding position. The first and second feeding mechanisms work alternately. The coating mechanism is configured to wrap the blue film at the first feeding position onto the surface of the battery at the first feeding position, and to wrap the blue film at the second feeding position onto the surface of the battery at the second feeding position, thereby achieving continuous supply of blue film and continuous battery coating, improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery processing equipment technology, and in particular to a battery packing device. Background Technology

[0002] During battery production, a blue film needs to be wrapped around the surface of the battery. In related technologies, the blue film is a commercially available roll, and one side of the blue film has a separator film attached to it. Before wrapping the battery with the blue film, the blue film roll needs to be placed on the feeding roller, one end of the blue film is pulled out by the traction roller, and the attached separator film is peeled off. Then, the wrapping mechanism wraps the blue film around the surface of the battery.

[0003] When the blue film on a roll of battery pack is used up, all equipment needs to be stopped, the used roll removed from the unloading roller, and a brand new roll loaded onto the unloading roller. The free end of the blue film in the new roll is then fixedly bonded to the blue film in the previous roll. The equipment is then restarted to continue battery packing. This method of stopping the machine to replace the blue film roll greatly reduces work efficiency.

[0004] Therefore, there is an urgent need to invent a battery packing device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a battery coating device to achieve continuous supply of blue film without stopping the machine, thereby realizing continuous coating processing of batteries and improving work efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Battery packing device, comprising:

[0008] A feeding mechanism having a first feeding position and a second feeding position, the feeding mechanism being configured to transfer a battery to the first feeding position or the second feeding position;

[0009] A first feeding mechanism and a second feeding mechanism, both of which are equipped with blue film rolls, are configured to feed blue film to the first feeding position and the other of which is configured to feed the blue film to the second feeding position. The first feeding mechanism and the second feeding mechanism work alternately.

[0010] The coating mechanism is configured to wrap the blue film at the first loading position onto the surface of the battery at the first loading position, and to wrap the blue film at the second loading position onto the surface of the battery at the second loading position.

[0011] As an optional solution, the first feeding mechanism includes:

[0012] frame;

[0013] A clamping assembly is mounted on the frame, and the clamping assembly is capable of detachably securing the blue film roll;

[0014] A traction assembly, mounted on the frame, is configured to drive the blue film to move; and

[0015] A film-removing assembly is mounted on the frame and disposed on the movement path of the blue film. The film-removing assembly is configured to remove the release film attached to the blue film.

[0016] As an optional solution, the first feeding mechanism further includes:

[0017] An abutting component is disposed on the movement path of the blue film and is configured to abut the blue film against the traction component.

[0018] As an optional solution, the abutment component includes:

[0019] A telescopic abutment, the output end of which is capable of pressing the blue film against the traction assembly; and

[0020] A control switch, connected to the telescopic abutment, is configured to control the opening and closing of the telescopic abutment.

[0021] As an optional solution, the abutment component further includes:

[0022] An elastic buffer is connected to the output end of the telescopic abutment member, and the elastic buffer is configured to abut against the blue membrane.

[0023] As an optional solution, the film-peeling assembly includes:

[0024] Two film-tearing rollers are arranged opposite each other, and a processing gap is formed between the two film-tearing rollers for the blue film to pass through. The film-tearing rollers can be bonded and fixed to the release film.

[0025] As an option, the width of the processing gap between the two film-tearing rollers is adjustable along the direction in which the two film-tearing rollers are arranged opposite each other.

[0026] As an optional solution, the film-peeling assembly further includes:

[0027] The drive unit is mounted on the frame; and

[0028] The adapter is rotatably connected to either of the two film-tearing rollers. The adapter is connected to the output end of the drive unit, which can drive the adapter to move along the direction in which the two film-tearing rollers are arranged opposite each other.

[0029] As an optional solution, the first feeding mechanism further includes:

[0030] A waste bin, configured to store the removed isolation membrane.

[0031] As an optional solution, the first feeding mechanism further includes:

[0032] A tensioning assembly is mounted on the frame and positioned along the movement path of the blue film. The tensioning assembly is configured to tension the blue film.

[0033] The beneficial effects of this utility model are:

[0034] The battery coating device provided by this utility model transfers the battery to the first or second feeding position through the feeding mechanism. Combined with either the first feeding mechanism or the second feeding mechanism feeding blue film to the first feeding position and the other feeding blue film to the second feeding position, the coating mechanism can wrap the blue film at the first feeding position to the surface of the battery at the first feeding position and wrap the blue film at the second feeding position to the surface of the battery at the second feeding position, by means of the alternating operation of the first feeding mechanism and the second feeding mechanism. During actual operation, the first feeding mechanism is in working state, the second feeding mechanism is in standby state, the feeding mechanism transfers the battery to the first feeding position, and the coating mechanism wraps the blue film at the first feeding position onto the surface of the battery at the first feeding position. If the blue film roll in the first feeding mechanism is used up at this time, the first feeding mechanism switches to standby state, and the second feeding mechanism switches to working state. At the same time, the feeding mechanism continues to work and transfers the battery to the second feeding position, and the coating mechanism continues to work and wraps the blue film at the second feeding position onto the surface of the battery at the second feeding position. During the operation of the second feeding mechanism, the used blue film rolls in the first feeding mechanism can be replaced with brand new blue film rolls. When the blue film rolls in the second feeding mechanism are used up, the second feeding mechanism switches to standby mode, and the first feeding mechanism switches back to working mode. The feeding mechanism continues to work and transfers the battery to the first feeding position. The coating mechanism continues to work and wraps the blue film at the first feeding position onto the surface of the battery at the first feeding position. This cycle repeats, realizing the continuous supply of blue film, thereby realizing the continuous coating of the battery, improving work efficiency, and meeting actual needs. Attached Figure Description

[0035] Figure 1This is a schematic diagram of the structure of the first feeding mechanism, the second feeding mechanism, and the blue film roll provided in this embodiment of the utility model;

[0036] Figure 2 This is a schematic diagram of the first structure of the first feeding mechanism and the blue film roll provided in this embodiment of the utility model;

[0037] Figure 3 This is a schematic diagram of the first structure of the first feeding mechanism and the blue film roll provided in this embodiment of the utility model;

[0038] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0039] Figure 5 yes Figure 3 A magnified view of a section at point B.

[0040] In the picture:

[0041] 100. First feeding mechanism; 110. Traction assembly; 111. Traction roller; 120. Abutment assembly; 121. Abutment component; 122. Control switch; 123. Elastic buffer component; 130. Tensioning assembly; 131. Tensioning roller; 140. Film tearing assembly; 141. Film tearing roller; 142. Drive component; 143. Adapter component; 150. Clamping assembly; 160. Waste bin;

[0042] 200. Second material supply mechanism;

[0043] 2000, Blue film roll; 2100, Mounting through hole. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0048] Before applying the blue film to the battery, the blue film roll needs to be placed on the unloading roller, one end of the blue film is pulled out by the traction roller, and the adhesive release liner is removed. Then, the coating mechanism wraps the blue film around the surface of the battery. When the blue film on one roll is used up, the entire machine needs to be stopped, the used roll removed from the unloading roller, and a brand new roll loaded onto the unloading roller. The free end of the blue film in the new roll is then fixedly bonded to the blue film in the previous roll. The machine is then restarted to continue coating the battery. This method of stopping the machine to replace the blue film roll significantly reduces work efficiency.

[0049] To solve the above problems, such as Figure 1 As shown, this embodiment provides a battery coating device. The battery coating device includes a feeding device (not shown), a coating mechanism (not shown), a first feeding mechanism 100, and a second feeding mechanism 200. The feeding mechanism has a first feeding position and a second feeding position, and is configured to transfer a battery to either the first feeding position or the second feeding position. Both the first feeding mechanism 100 and the second feeding mechanism 200 are fitted with a blue film roll 2000. Either the first feeding mechanism 100 or the second feeding mechanism 200 is configured to feed blue film to the first feeding position, and the other is configured to feed blue film to the second feeding position. The first feeding mechanism 100 and the second feeding mechanism 200 operate alternately. The coating mechanism is configured to wrap the blue film at the first feeding position onto the surface of the battery at the first feeding position, and to wrap the blue film at the second feeding position onto the surface of the battery at the second feeding position.

[0050] The battery coating device transfers batteries to either the first or second feeding position via a feeding mechanism. By combining either the first feeding mechanism 100 or the second feeding mechanism 200 to feed blue film to the first feeding position and the other feeding blue film to feed blue film to the second feeding position, the coating mechanism can wrap the blue film at the first feeding position onto the surface of the battery at the first feeding position and wrap the blue film at the second feeding position onto the surface of the battery at the second feeding position, utilizing the alternating operation of the first feeding mechanism 100 and the second feeding mechanism 200. During actual operation, the first feeding mechanism 100 is in working state, and the second feeding mechanism 200 is in standby state. The feeding mechanism transfers the battery to the first feeding position, and the coating mechanism wraps the blue film at the first feeding position onto the surface of the battery at the first feeding position. If the blue film roll 2000 in the first feeding mechanism 100 is used up at this time, the first feeding mechanism 100 switches to standby state, and the second feeding mechanism 200 switches to working state. At the same time, the feeding mechanism continues to work and transfers the battery to the second feeding position, and the coating mechanism continues to work and wraps the blue film at the second feeding position onto the surface of the battery at the second feeding position. During the operation of the second feeding mechanism 200, the used blue film rolls 2000 in the first feeding mechanism 100 can be replaced with brand new blue film rolls 2000. When the blue film rolls 2000 in the second feeding mechanism 200 are used up, the second feeding mechanism 200 switches to standby mode, and the first feeding mechanism 100 switches back to working mode. The feeding mechanism continues to work and transfers the battery to the first feeding position. The coating mechanism continues to work and wraps the blue film at the first feeding position onto the surface of the battery at the first feeding position. This cycle repeats, realizing the continuous supply of blue film, thereby realizing the continuous coating of the battery, improving work efficiency, and meeting actual needs.

[0051] Combination Figure 2 and Figure 3The specific structure of the first feeding mechanism 100 is described below. The first feeding mechanism 100 includes a frame, a clamping assembly 150, a traction assembly 110, and a film-tearing assembly 140. The clamping assembly 150, the traction assembly 110, and the film-tearing assembly 140 are all mounted on the frame. The clamping assembly 150 can detachably fix the blue film roll 2000. The traction assembly 110 is configured to drive the blue film to move. The film-tearing assembly 140 is disposed on the moving path of the blue film and is configured to tear off the release film attached to the blue film. By installing clamping assembly 150, traction assembly 110, and film-tearing assembly 140 on the frame, and utilizing the detachable fixing of clamping assembly 150 to blue film roll 2000, not only can temperature clamping and fixing of blue film roll 2000 be achieved, but it is also easy to change blue film roll 2000. By using traction assembly 110 to drive the blue film to move, the blue film can be pulled from the blue film roll 2000 to the outside and moved to the first loading position or the second loading position. Combined with film-tearing assembly 140 set on the blue film moving path to tear off the separator film that is bonded to the blue film, the traction assembly 110 can drive the blue film to move only to the first loading position or the second loading position, ensuring that the coating mechanism can quickly wrap the blue film on the surface of the battery.

[0052] It should be noted that, in this embodiment, the first feeding mechanism 100 is configured to convey the blue film to the first loading position, and the second feeding mechanism 200 is configured to convey the blue film to the second loading position. In other embodiments, the first feeding mechanism 100 may convey the blue film to the second loading position, and the second feeding mechanism 200 may convey the blue film to the first loading position; this embodiment does not impose specific limitations.

[0053] Optionally, the traction assembly 110 includes a plurality of traction rollers 111 rotatably mounted on the frame. These traction rollers 111 are spaced apart and work together to move the blue film. It should be noted that in this embodiment, the traction assembly 110 includes seven spaced-apart traction rollers 111. In other embodiments, the specific number of traction rollers 111 can be adjusted according to actual needs; this embodiment does not impose a specific limitation. The specific structure of the traction rollers 111 and their traction principle on the blue film are existing technologies and will not be described in detail here.

[0054] Furthermore, to further improve the transfer effect of the blue film, the first feeding mechanism 100 also includes a tensioning assembly 130. The tensioning assembly 130 is mounted on the frame and positioned along the movement path of the blue film, configured to tension the blue film. It should be noted that in this embodiment, the tensioning assembly 130 includes multiple tensioning rollers 131 rotatably mounted on the frame. These tensioning rollers 131 are spaced apart and do not interfere with the traction rollers 111, allowing the blue film to be transferred from the blue film roll 2000 to the first feeding position in a tensioned state. In this embodiment, the tensioning assembly 130 includes four spaced-apart tensioning rollers 131. In other embodiments, the specific number of tensioning rollers 131 can be adjusted according to actual needs; this embodiment does not impose a specific limitation.

[0055] Optionally, the clamping assembly 150 includes a clamping shaft and a tensioning element. The clamping shaft is rotatably mounted on the frame and axially engages with the mounting through hole 2100 of the blue film roll 2000. The tensioning element is installed within the clamping shaft, and its output end extends radially out of the clamping shaft and abuts against the wall of the mounting through hole 2100, thereby achieving tensioning and fixing of the blue film roll 2000. It should be noted that in this embodiment, the tensioning element is a linear cylinder. Linear cylinders have a simple structure, are highly responsive, and are easy to assemble and disassemble. In other embodiments, the tensioning element can also be a linear motor or other linear drive structure; this embodiment does not impose specific limitations.

[0056] In an alternative embodiment, such as Figure 3 As shown, the film-tearing assembly 140 includes two opposing film-tearing rollers 141, with a processing gap formed between the two film-tearing rollers 141 for the blue film to pass through. The film-tearing rollers 141 can be bonded and fixed to the release liner. By forming a processing gap for the blue film to pass through between the two opposing film-tearing rollers 141, and utilizing the bonding and fixing of the film-tearing rollers 141 to the insulating film, when the blue film passes through the processing gap, the film-tearing rollers 141 are bonded and fixed to the release liner. With the continuous driving of the traction roller 111, the blue film separates from the release liner and moves towards the first loading position. It should be noted that in this embodiment, the specific structure and film-tearing principle of the film-tearing rollers 141 are prior art and will not be described in detail here.

[0057] In order to peel blue film of different thicknesses, in this embodiment, the width of the processing gap between the two tearing rollers 141 is adjustable along the direction in which the two tearing rollers 141 are arranged opposite each other.

[0058] Specifically, such as Figure 4As shown, the film-tearing assembly 140 also includes a drive component 142 and an adapter component 143. The drive component 142 is mounted on the frame, and the adapter component 143 is rotatably connected to either of the two film-tearing rollers 141. The adapter component 143 is connected to the output end of the drive component 142, and the drive component 142 can drive the adapter component 143 to move in a direction relative to the two film-tearing rollers 141. By using the adapter component 143 to rotatably connect to either of the two film-tearing rollers 141, and connecting the output end of the drive component 142 to the adapter component 143, the drive component 142 drives the adapter component 143 to move in a direction relative to the two film-tearing rollers 141, thereby adjusting the width of the processing gap between the two film-tearing rollers 141. It should be noted that in this embodiment, the drive component 142 is a linear cylinder. Linear cylinders have a simple structure, are highly responsive, and are easy to assemble and disassemble. In other embodiments, the drive component 142 can also be a linear motor or other linear drive structure; this embodiment does not impose specific limitations.

[0059] To facilitate the storage of the release film torn off the blue film, the first feeding mechanism 100 also includes a waste bin 160, which is configured to store the torn release film.

[0060] During the replacement of the blue film roll 2000, to ensure the continuity of the blue film, the first end of the replaced blue film roll 2000 needs to be connected to the last end of the original blue film roll 2000. To facilitate the connection between the first end of the replaced blue film roll 2000 and the last end of the original blue film roll 2000, in this embodiment, the first feeding mechanism 100 further includes an abutment component 120, wherein the abutment component 120 is disposed on the moving path of the blue film, and the abutment component 120 is configured to press the blue film against the traction roller 111 in the traction component 110. When the blue film in the blue film roll 2000 is used up, the tail end of the blue film detaches from the blue film roll 2000 and is located in the moving path. At this time, the abutment component 120 abuts the tail end of the blue film against the traction roller 111, thereby clamping and fixing the tail end of the blue film. Then, the blue film roll 2000 is replaced, and the head end of the newly replaced blue film roll 2000 is bonded and fixed together with the abutted tail end, thereby connecting the two blue films.

[0061] like Figure 3 and Figure 5As shown, the abutment assembly 120 includes a telescopic abutment member 121 and a control switch 122. The output end of the telescopic abutment member 121 can press the blue film against the traction roller 111. The control switch 122 is connected to the telescopic abutment member 121 and is configured to control the opening and closing of the telescopic abutment member 121. By controlling the opening and closing of the telescopic abutment member 121 through the control switch 122, the output end of the telescopic abutment member 121 presses the blue film against the traction roller 111, satisfying the actual pressing requirements. It should be noted that in this embodiment, the telescopic abutment member 121 is a linear cylinder, and the control switch 122 is a valve. The valve controls the opening and closing of the gas delivery pipeline of the telescopic abutment member 121 to control the opening and closing of the telescopic abutment member 121.

[0062] To further enhance the protection of the blue film and the traction roller 111, the abutment assembly 120 also includes an elastic buffer 123. The elastic buffer 123 is connected to the output end of the telescopic abutment member 121 and is configured to abut against the blue film. When it is necessary to press the two films against the traction roller 111, the control switch 122 controls the telescopic abutment member 121 to open. The output end of the telescopic abutment member 121 drives the elastic buffer 123 to abut against the blue film and press the blue film against the traction roller 111. During the pressing process, the elastic deformation of the elastic buffer 123 absorbs the abutment force, thereby improving the protection of the blue film and the traction roller 111. It should be noted that in this embodiment, the elastic buffer 123 is a pad made of rubber material. Rubber has good elasticity, toughness, and wear resistance, and a long service life. In other embodiments, the elastic buffer 123 can also be a sponge or other elastic cushioning structure; this embodiment does not specifically limit this.

[0063] In this embodiment, the abutment component 120 is located upstream of the film-tearing component 140 along the blue film's moving path. That is, after the two blue films are connected, they need to pass through the film-tearing component 140 before being conveyed to the first feeding position. In actual operation, when the connection area between the two blue films passes through the processing gap of the film-tearing component 140, the film-tearing component 140 can easily pull the two blue films, which are originally bonded together, apart. To solve this problem, after the two blue films are bonded together, the connection area of ​​the two blue films needs to be manually pulled through the processing gap of the film-tearing component 140 before the release film of the connection area is manually removed. In other words, when the first feeding mechanism 100 stops to replace the blue film roll 2000, it is not only necessary to connect the two blue films together, but also to allow the connection area of ​​the two blue films to pass through the processing gap of the film-tearing component 140 while the machine is stopped, and then manually remove the release film of the two blue films to achieve refilling of the blue films.

[0064] Understandably, the specific structure of the second feeding mechanism 200 is the same as that of the first feeding mechanism 100, and will not be described in detail here to keep the process simple.

[0065] Furthermore, the specific structures and working principles of the feeding mechanism and the coating mechanism are existing technologies and will not be elaborated here.

[0066] In one alternative embodiment, the battery coating device further includes a control mechanism. The control mechanism is communicatively connected to the feeding mechanism, the coating mechanism, the first feeding mechanism 100, and the second feeding mechanism 200. The control mechanism can control the feeding mechanism to transfer batteries to the first or second feeding position, control the first feeding mechanism 100 to deliver blue film to the first feeding position, and control the second feeding mechanism 200 to deliver blue film to the second feeding position. It can also control the coating mechanism to wrap the blue film at the first feeding position onto the surface of the battery at the first feeding position, and to wrap the blue film at the second feeding position onto the surface of the battery at the second feeding position. The specific structure and control principle of the control mechanism are existing technologies and will not be described in detail here.

[0067] As an optional feature, the battery packing device also includes a touch screen, which is communicatively connected to the control mechanism. When it is necessary to control the start and stop of the feeding mechanism, the packing mechanism, the first feeding mechanism 100, and the second feeding mechanism 200, it can be operated through the touch screen.

[0068] To facilitate understanding of the battery pack device provided in this embodiment, the specific operation when the first feeding mechanism 100 needs to replace the blue film roll 2000 will now be described. First, the operator operates the touch screen, the first feeding mechanism 100 stops feeding, the telescopic abutment 121 in the first feeding position presses the blue film against the traction roller 111, and causes the feeding mechanism to transfer the battery to the second feeding position, causes the second feeding mechanism 200 to convey the blue film to the second feeding position, and causes the wrapping mechanism to wrap the blue film in the second feeding position around the surface of the battery in the second feeding position. Then, the output end of the tensioning member retracts radially to the clamping shaft, removes the empty blue film roll 2000 from the clamping shaft, and clamps the new blue film roll 2000 on the clamping shaft. The first end of the new blue film roll 2000 is bonded and fixed to the tail end of the pressed blue film. Then, the connecting area of ​​the two blue films is manually pulled along the moving path of the blue film through the processing gap of the film tearing component 140, and the isolation film of the connecting area of ​​the two blue films is torn off and placed in the waste bin 160, completing the replacement of the blue film roll 2000 in the first feeding mechanism 100. When it is necessary to replace the blue film roll 2000 in the second feeding mechanism 200, the operation steps are the same as those described above, and will not be repeated here. By continuously replacing the blue film roll 2000 in the first feeding mechanism 100 and the second feeding mechanism 200, continuous feeding of the blue film is achieved, thereby realizing continuous coating of the battery and improving work efficiency.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery pack film device, characterized by, include: A feeding mechanism having a first feeding position and a second feeding position, the feeding mechanism being configured to transfer a battery to the first feeding position or the second feeding position; A first feeding mechanism (100) and a second feeding mechanism (200) are provided, each of which is equipped with a blue film roll (2000). Either the first feeding mechanism (100) or the second feeding mechanism (200) is configured to feed the blue film to the first feeding position, and the other is configured to feed the blue film to the second feeding position. The first feeding mechanism (100) and the second feeding mechanism (200) work alternately. The coating mechanism is configured to wrap the blue film at the first loading position onto the surface of the battery at the first loading position, and to wrap the blue film at the second loading position onto the surface of the battery at the second loading position.

2. The battery pack film device of claim 1, wherein, The first feeding mechanism (100) includes: frame; A clamping assembly (150) is mounted on the frame, and the clamping assembly (150) is capable of detachably securing the blue film roll (2000); A traction assembly (110), mounted on the frame, is configured to drive the blue film to move; and A film-removing assembly (140) is mounted on the frame and disposed on the movement path of the blue film. The film-removing assembly (140) is configured to remove the release film attached to the blue film.

3. The battery pack film device of claim 2, wherein, The first feeding mechanism (100) further includes: An abutment component (120) is disposed on the movement path of the blue film and is configured to abut the blue film against the traction component (110).

4. The battery pack film device of claim 3, wherein, The abutment component (120) includes: A telescopic abutment (121), the output end of which is capable of pressing the blue film against the traction assembly (110); and A control switch (122) is connected to the telescopic abutment (121), and the control switch (122) is configured to control the opening and closing of the telescopic abutment (121).

5. The battery pack film device of claim 4, wherein, The abutment component (120) also includes: An elastic buffer (123) is connected to the output end of the telescopic abutment (121), and the elastic buffer (123) is configured to abut against the blue membrane.

6. The battery pack film device of any one of claims 2-5, wherein, The film-peeling assembly (140) includes: Two oppositely arranged film-tearing rollers (141) form a processing gap between the two film-tearing rollers (141) for the blue film to pass through, and the film-tearing rollers (141) can be bonded and fixed to the release film.

7. The battery pack film device of claim 6, wherein, The width of the processing gap between the two tearing rollers (141) is adjustable along the direction in which the two tearing rollers (141) are arranged opposite each other.

8. The battery pack film device of claim 7, wherein, The film-peeling assembly (140) also includes: Drive unit (142), mounted on the frame; and The adapter (143) is rotatably connected to either of the two film-tearing rollers (141). The adapter (143) is connected to the output end of the drive (142). The drive (142) can drive the adapter (143) to move in the direction in which the two film-tearing rollers (141) are arranged opposite to each other.

9. The battery pack film device of any one of claims 2-5, wherein, The first feeding mechanism (100) further includes: Waste compartment (160) configured to store the removed isolation membrane.

10. The battery pack film device of any one of claims 2-5, wherein, The first feeding mechanism (100) further includes: A tensioning assembly (130) is mounted on the frame and disposed on the movement path of the blue film. The tensioning assembly (130) is configured to tension the blue film.

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