Battery film coating mechanism

Abstract

The battery film coating mechanism comprises a first film roller assembly and a second film roller assembly which are arranged in the front-back direction in a spaced mode, the first film roller assembly comprises a first upper film roller and a first lower film roller which are arranged in the up-down direction in a spaced mode, and the second film roller assembly comprises a second upper film roller and a second lower film roller which extend in the up-down direction; the first upper film roller and the second upper film roller are both used for rolling a protective film on the upper side of a battery, and the first lower film roller and the second lower film roller are both used for rolling a protective film on the lower side of the battery. The battery film coating mechanism can eliminate bubbles between a protective film and a battery during film coating, so that the protective film coated on the battery is smooth and free of wrinkles.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and in particular, to a battery film wrapping mechanism. Background Art

[0002] In the related art, when wrapping a battery with a protective film, air bubbles are likely to be generated between the protective film and the battery. Summary of the Utility Model

[0003] The purpose of the present disclosure is to provide a battery film wrapping mechanism, which can eliminate the air bubbles between the protective film and the battery during film wrapping, so that the protective film wrapped on the battery is flat and free of wrinkles.

[0004] To achieve the above purpose, the present disclosure provides a battery film wrapping mechanism, including a first film roller assembly and a second film roller assembly arranged at intervals in the front-rear direction. The first film roller assembly includes a first upper film roller and a first lower film roller arranged at intervals in the up-down direction. The second film roller assembly includes a second upper film roller and a second lower film roller extending in the up-down direction. The first upper film roller and the second upper film roller are both used for rolling the protective film on the upper side of the battery, and the first lower film roller and the second lower film roller are both used for rolling the protective film on the lower side of the battery.

[0005] Optionally, the first upper film roller, the first lower film roller, the second upper film roller, and the second lower film roller all include a telescopic cylinder and a body roller. The telescopic cylinder is used to drive the body roller to move up and down, and an elastic member is arranged between the telescopic cylinder and the body roller.

[0006] Optionally, the first upper film roller, the first lower film roller, the second upper film roller, and the second lower film roller all include a connecting rod and a mounting seat. The body roller is rotatably connected to the mounting seat. The connecting rod is connected to the mounting seat, and an elastic member is connected between the connecting rod and the telescopic rod of the telescopic cylinder.

[0007] Optionally, a support rod is connected between the connecting rod and the telescopic rod, and the support rod is slidably connected to the connecting rod in the up-down direction. The elastic member is configured as a compression spring. The compression spring is sleeved on the support rod, and one end of the compression spring abuts against the connecting rod and the other end abuts against the telescopic rod.

[0008] Optionally, the first upper film roller, the first lower film roller, the second upper film roller, and the second lower film roller all include a guide rail and a guide slider. The guide slider is slidably connected to the guide rail in the up-down direction, and the guide slider is fixedly connected to the connecting rod.

[0009] Optionally, the body roller is made of a flexible material.

[0010] Optionally, the body rollers of the second upper film roller and the second lower film roller both include two sub-rollers arranged at intervals in the left-right direction.

[0011] Optionally, the body rollers of the second upper film roller and the second lower film roller both include transmission shafts, and the two sub-rollers are both connected to the transmission shafts.

[0012] Optionally, the battery film wrapping mechanism includes an upper clamping assembly and a lower clamping assembly arranged at intervals in the up-down direction. The upper clamping assembly and the lower clamping assembly both include two clamping structures arranged at intervals in the left-right direction. The clamping structures are used for clamping the protective film.

[0013] The upper clamping assembly and the lower clamping assembly both include a lifting structure and a translation structure. The lifting structure is used to drive the clamping structure to move up and down, and the translation structure is used to drive the clamping structure to move left and right.

[0014] Optionally, the lifting structure includes a first driving structure, a first slide rail, and a second slide rail. The first slide rail extends in the up-down direction. The second slide rail is slidably connected to the first slide rail and extends in the left-right direction. The clamping structure is slidably connected to the second slide rail. The first driving structure is in transmission connection with the second slide rail.

[0015] The translation structure includes a second driving structure and a third slide rail. The third slide rail extends in the left-right direction. A cam groove plate is slidably connected to the third slide rail. The second driving structure is in transmission connection with the cam groove plate. The cam groove plate is provided with a mating groove extending in the up-down direction.

[0016] The clamping structure includes a cam follower, and the cam follower is slidably arranged in the mating groove.

[0017] Through the above technical solutions, in the battery film wrapping mechanism provided by the present disclosure, when wrapping the battery with film, the battery can move in the front-rear direction. When passing through the first film roller assembly first, the first upper film roller can roll the protective film on the upper side of the battery, and the first lower film roller can roll the protective film on the lower side of the battery. Thus, double-sided film wrapping of the battery can be achieved. After that, the battery passes through the second film roller assembly. At this time, the second upper film roller can perform secondary rolling on the protective film on the upper side of the battery, so that the air bubbles between the upper protective film and the battery can be eliminated. Similarly, the second lower film roller can perform secondary rolling on the protective film on the lower side of the battery, so that the air bubbles between the lower protective film and the battery can be eliminated. Thus, the battery film wrapping mechanism of the present disclosure can eliminate the air bubbles between the protective film and the battery during film wrapping, making the protective film wrapped on the battery flat and without wrinkles.

[0018] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the accompanying drawings:

[0020] Figure 1 FIG. is a schematic structural diagram of a battery film wrapping mechanism provided according to an embodiment of the present disclosure;

[0021] Figure 2 FIG. is a simplified schematic diagram of the battery film wrapping mechanism provided according to an embodiment of the present disclosure when wrapping a battery;

[0022] Figure 3 FIG. is a schematic structural diagram of a first upper film roller in the battery film wrapping mechanism provided according to an embodiment of the present disclosure;

[0023] Figure 4 FIG. is a partial structural schematic diagram of the battery film wrapping mechanism provided according to an embodiment of the present disclosure, which shows a lower clamping assembly and a cutter assembly;

[0024] Figure 5 FIG. is a three-dimensional schematic diagram of a part of the structure of the battery film wrapping mechanism provided according to an embodiment of the present disclosure;

[0025] Figure 6 FIG. is a partial structural schematic diagram of the battery film wrapping mechanism provided according to an embodiment of the present disclosure, which shows a translation assembly;

[0026] Figure 7 is Figure 6 a three-dimensional schematic diagram of a part of the structure of the translation assembly in FIG.

[0027] DESCRIPTION OF REFERENCE NUMERALS

[0028] 1 - First film roller assembly, 11 - First upper film roller, 12 - First lower film roller, 2 - Second film roller assembly, 21 - Second upper film roller, 22 - Second lower film roller, 31 - Telescopic cylinder, 311 - Telescopic rod, 32 - Body roller, 321 - Sub-roller, 322 - Transmission shaft, 33 - Elastic member, 34 - Connecting rod, 35 - Mounting seat, 36 - Support rod, 37 - Guide rail, 38 - Guide slider, 39 - First motor, 4 - Upper clamping assembly, 5 - Lower clamping assembly, 61 - Clamping structure, 611 - Cam follower, 62 - Lifting structure, 621 - First driving structure, 6211 - Second motor, 6212 - First lead screw and nut, 6213 - First synchronous belt, 622 - First slide rail, 623 - Second slide rail, 624 - Spare driving structure, 63 - Translation structure, 631 - Second driving structure, 6311 - Third motor, 6312 - Second lead screw and nut, 6313 - Second synchronous belt, 632 - Third slide rail, 633 - Cam groove plate, 6331 - Fitting groove, 7 - First support roller, 8 - Cutter assembly, 9 - Second support roller, 10 - Battery, 20 - Protective film. Detailed implementation manners

[0029] The following will describe in detail the detailed implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for explaining and illustrating the present disclosure, and are not used to limit the present disclosure.

[0030] In the present disclosure, unless otherwise stated, the orientation terms such as "upper, lower, left, right, front, and back" are based on Figure 1 , Figure 2 and Figure 4 defined, wherein the up-down direction, left-right direction, and front-back direction are perpendicular to each other in pairs, and the up-down direction also corresponds to the gravity direction of the battery film wrapping mechanism. "Inner and outer" refer to the inside and outside of the contour of each component. The terms "first and second" are used to distinguish one element from another, and do not have sequentiality and importance. In addition, when the following description refers to the accompanying drawings, the same reference numerals in different drawings represent the same or similar elements, and the present disclosure will not repeat them here.

[0031] According to some embodiments of the present disclosure, a battery film wrapping mechanism is provided. As shown in Figure 1 and Figure 2 , the battery film wrapping mechanism includes a first film roller assembly 1 and a second film roller assembly 2 that are spaced apart in the front-back direction. The first film roller assembly 1 includes a first upper film roller 11 and a first lower film roller 12 that are spaced apart in the up-down direction. The second film roller assembly 2 includes a second upper film roller 21 and a second lower film roller 22 that extend in the up-down direction. The first upper film roller 11 and the second upper film roller 21 are both used for rolling the protective film 20 on the upper side of the battery 10, and the first lower film roller 12 and the second lower film roller 22 are both used for rolling the protective film 20 on the lower side of the battery 10.

[0032] With the above technical solution, in the battery film wrapping mechanism provided by the present disclosure, when wrapping the battery 10, the battery 10 can move in the front-back direction. When passing through the first film roller assembly 1 first, the first upper film roller 11 can roll the protective film 20 on the upper side of the battery 10, and the first lower film roller 12 can roll the protective film 20 on the lower side of the battery 10. Thus, double-sided film wrapping of the battery 10 can be achieved. After that, the battery 10 passes through the second film roller assembly 2. At this time, the second upper film roller can perform secondary rolling on the protective film 20 on the upper side of the battery 10, so that the bubbles between the upper protective film 20 and the battery 10 can be eliminated. Similarly, the second lower film roller can perform secondary rolling on the protective film 20 on the lower side of the battery 10, so that the bubbles between the lower protective film 20 and the battery 10 can be eliminated. Thus, the battery film wrapping mechanism of the present disclosure can eliminate the bubbles between the protective film 20 and the battery 10 during film wrapping, making the protective film 20 wrapped on the battery 10 flat and without wrinkles.

[0033] It should be noted that the principle of using the film roller to roll the protective film 20 on the battery 10 is well known to those skilled in the art, and the present disclosure will not elaborate here. Among them, the battery 10 can also pass through the second film roller assembly 2 first and then pass through the first film roller assembly 1. The present disclosure only takes the former as an example for exemplary introduction. In addition, in the present disclosure, the first upper film roller 11, the first lower film roller 12, the second upper film roller 21, and the second lower film roller 22 can have lengths in the left-right direction. Among them, their respective lengths and positions in the left-right direction can be adaptively designed according to needs, and the present disclosure does not limit this.

[0034] In some embodiments of the present disclosure, referring to Figures 1 to 3As shown in the figure, the first upper film roller 11, the first lower film roller 12, the second upper film roller 21, and the second lower film roller 22 can all include a telescopic cylinder 31 and a body roller 32. The telescopic cylinder 31 is used to drive the body roller 32 to move up and down. In this way, before the battery 10 arrives, the telescopic cylinder 31 can drive the body roller 32 to move, so as to increase the interval between the first upper film roller 11 and the first lower film roller 12, and to increase the interval between the second upper film roller 21 and the second lower film roller 22. In this way, it is convenient for the battery 10 to move in the front-rear direction. When the body roller 32 needs to roll the film, the telescopic cylinder 31 can drive the body roller 32 to approach the battery 10 and press the protective film 20 on the battery 10. Among them, an elastic member 33 can be provided between the telescopic cylinder 31 and the body roller 32. In this way, the elastic member 33 can store elastic potential energy to prevent the film rolling force of the body roller 32 from being too large, avoiding damage to the protective film 20 and the battery 10 by the body roller 32. Or, the elastic member 33 can release elastic potential energy. In this way, it can prevent the film rolling force of the body roller 32 from being too small, avoiding the protective film 20 from being weakly adhered and resulting in more bubbles. Here, the elastic member 33 can store a certain amount of elastic potential energy in the initial state, and the present disclosure does not limit this.

[0035] In some embodiments of the present disclosure, referring to Figure 3 As shown in the figure, the first upper film roller 11, the first lower film roller 12, the second upper film roller 21, and the second lower film roller 22 can all include a connecting rod 34 and a mounting seat 35. The body roller 32 is rotatably connected to the mounting seat 35. The connecting rod 34 is connected to the mounting seat 35, and an elastic member 33 is connected between the connecting rod 34 and the telescopic rod 311 of the telescopic cylinder 31. In this way, the connecting rod 34 can be used to realize the connection between the telescopic rod 311 and the mounting seat 35, and further realize the up and down movement of the telescopic cylinder 31 driving the body roller 32. The structure is simple and easy to implement. Among them, the mounting seat 35 can provide an installation basis for the body roller 32, and the axis of the body roller 32 extends in the left-right direction. In some embodiments, referring to Figure 3 As shown in the figure, the telescopic cylinder 31 can be connected with a first motor 39, and the first motor 39 can drive the telescopic rod 311 to expand and contract.

[0036] In some embodiments, referring to Figure 3 As shown in the figure, a support rod 36 is connected between the connecting rod 34 and the telescopic rod 311, and the support rod 36 is slidably connected to the connecting rod 34 in the up and down direction. The elastic member 33 is configured as a compression spring. The compression spring is sleeved on the support rod 36, and one end of the compression spring abuts against the connecting rod 34 and the other end abuts against the telescopic rod 311. Here, when the support rod 36 slides relative to the connecting rod 34, the compression spring can be stretched or compressed. By setting the support rod 36, the compression spring can be prevented from moving around, improving the stability of the compression spring.

[0037] In some embodiments, referring to Figure 3As shown in the figure, the first upper film roller 11, the first lower film roller 12, the second upper film roller 21, and the second lower film roller 22 may all include a guiding slide rail 37 and a guiding slider 38. The guiding slider 38 is slidably connected to the guiding slide rail 37 in the up and down direction, and the guiding slider 38 is fixedly connected to the connecting rod 34. In this way, by the cooperation of the guiding slider 38 and the guiding slide rail 37, the up and down movement of the body roller 32 can be guided, and the film rolling effect can be improved.

[0038] In some embodiments, the body roller 32 may be made of a flexible material. In this way, hard contact between the body roller 32 and the protective film 20 and the battery 10 can be avoided, and damage to the protective film 20 and the battery 10 can be prevented.

[0039] In some embodiments, referring to Figure 1 , Figure 4 and Figure 5 As shown in the figure, the body roller 32 of the second upper film roller 21 and the body roller 32 of the second lower film roller 22 may both include two sub-rollers 321 arranged at intervals in the left and right direction. Here, when the first upper film roller 11 and the first lower film roller 12 perform film rolling, the generated bubbles will be pushed to the left and right edges of the battery 10. Therefore, in the present disclosure, by setting the body roller 32 of the second upper film roller 21 and the body roller 32 of the second lower film roller 22 to both include two sub-rollers 321 arranged at intervals in the left and right direction, when the second film roller assembly 2 performs secondary wrapping, the left and right sub-rollers 321 can eliminate the bubbles at the left and right edges of the battery 10. Thus, the film wrapping effect on the battery 10 can be improved. Here, the present disclosure does not impose too many restrictions on the interval between the two sub-rollers 321, and the present disclosure also does not impose too many restrictions on the length of the sub-roller 321 in the left and right direction. The present disclosure can make adaptive designs according to needs.

[0040] In some embodiments, referring to Figure 4 As shown in the figure, the body roller 32 of the second upper film roller 21 and the body roller 32 of the second lower film roller 22 both include a transmission shaft 322, and the two sub-rollers 321 are both connected to the transmission shaft 322. In this way, the transmission shaft 322 can achieve synchronous rotation of the two sub-rollers 321.

[0041] In some embodiments of the present disclosure, referring to Figure 1 , Figure 4 and Figure 5As shown in , the battery film encapsulation mechanism may include an upper clamping assembly 4 and a lower clamping assembly 5 spaced apart in the up-down direction, and the upper clamping assembly 4 and the lower clamping assembly 5 each include two clamping structures 61 spaced apart in the left-right direction, and the clamping structure 61 is used to clamp the protective film 20, wherein the upper clamping assembly 4 and the lower clamping assembly 5 may each include a lifting structure 62 and a translation structure 63, the lifting structure 62 is used to drive the clamping structure 61 to move up and down, and the translation structure 63 is used to drive the clamping structure 61 to move left and right. In this way, the protective film 20 can be pulled and pasted by using the up-down movement and left-right movement of the two clamping structures 61 of the upper clamping assembly 4, so that the protective film 20 can be attached to the upper side of the battery 10. Similarly, the protective film 20 can be pulled and pasted by using the up-down movement and left-right movement of the two clamping structures 61 of the lower clamping assembly 5, so that the protective film 20 can be attached to the lower side of the battery 10. Among them, the clamping structure 61 can be constructed as an air clamp, which is not limited by the present disclosure.

[0042] In some embodiments of the present disclosure, reference Figure 1 , Figure 4 as well as Figure 5 As shown in , the lifting structure 62 may include a first driving structure 621, a first slide rail 622 and a second slide rail 623. The first slide rail 622 extends in the up-down direction, the second slide rail 623 is slidably connected to the first slide rail 622 and extends in the left-right direction, the clamping assembly is slidably connected to the second slide rail 623, and the first driving structure 621 is transmission-connected to the second slide rail 623. Here, the first driving structure 621 can drive the second slide rail 623 to move up and down along the first slide rail 622, thereby realizing the up-and-down movement of the clamping structure 61, wherein the number of the first slide rails 622 can be three, each second slide rail 623 is slidably connected to one first slide rail 622, and the first driving structure 621 can drive two second slide rails 623 to move up and down synchronously. For example, in some embodiments, refer to Figure 4 and Figure 5As shown in the figure, the first driving structure 621 may include a second motor 6211, a first lead screw nut 6212, and a first synchronous belt 6213. Among them, the second motor 6211 may be drivingly connected to two groups of first lead screw nuts 6212 through the first synchronous belt 6213. The nut in each group of first lead screw nuts 6212 may be connected to the second slide rail 623. Thus, the up-and-down movement of each clamping structure 61 can be realized. Here, another first slide rail 622 is slidably connected with a cutter assembly 8, and the cutter assembly 8 may be connected to the nut of one group of first lead screw nuts 6212. In this way, the up-and-down movement of the cutter assembly 8 can be realized, and the cutter assembly 8 is used to cut off the protective film 20. Here, the lifting structure 62 may further include a backup driving structure 624, and the backup driving structure 624 includes the above-mentioned second motor, first lead screw nut 6212, and first synchronous belt 6213. In this way, the backup driving structure 624 can be used to drive the clamping structure 61 to move left and right.

[0043] In some embodiments, referring to Figures 4 to 7 As shown in the figure, the translation structure 63 may include a second driving structure 631 and a third slide rail 632. The third slide rail 632 may extend in the left-right direction. A cam groove plate 633 is slidably connected to the third slide rail 632. The second driving structure 631 is drivingly connected to the cam groove plate 633. The cam groove plate 633 is provided with a mating groove 6331 extending in the up-down direction. The clamping structure 61 includes a cam follower 611, and the cam follower 611 is slidably disposed in the mating groove 6331. Here, when the first driving structure 621 drives the second slide rail 623 to move up and down along the first slide rail 622, the cam follower 611 can slide in the mating groove 6331. When the second driving structure 631 drives the cam groove plate 633 to move in the left-right direction, the cam groove plate 633 can drive the cam follower 611 to move left and right, thereby driving the clamping structure 61 to move left and right. Here, in some embodiments, referring to Figure 6 and Figure 7 As shown in the figure, the second driving structure 631 may include a third motor 6311, a second lead screw nut 6312, and a second synchronous belt 6313. The third motor 6311 may drive the second lead screw nut 6312 to move through the second synchronous belt 6313. Among them, the nut in the second lead screw nut 6312 may be connected to the cam groove plate 633 to drive the cam groove plate 633 to move left and right. In addition, the lead screw in the second lead screw nut 6312 may include two connecting segments with opposite helix directions, and each connecting segment is connected to a cam groove plate 633. In this way, when the lead screw rotates, the two clamping structures 61 can move away from or close to each other in the left-right direction.

[0044] In some embodiments, referring to Figure 1As shown, the battery film wrapping mechanism may include a first support roller 7 for supporting the lower side of the battery 10, so as to prevent the battery 10 from accidentally falling. Here, the first film roller assembly 1 may be arranged between the first support roller 7 and the second film roller assembly 2, and the present disclosure does not limit this.

[0045] In some embodiments, referring to Figure 1 As shown, the battery film wrapping mechanism may include two second support rollers 9 spaced up and down, and the second support roller 9 is used to support the protective film 20, so as to further avoid wrinkles during film wrapping.

[0046] Next, the present disclosure will introduce the specific film wrapping process of the battery film wrapping mechanism in detail in combination with the above specific embodiments. Referring to Figures 1 to 7 As shown, first, the battery 10 moves from front to back. When approaching the first film roller assembly 1, the clamping structure 61 in the upper clamping assembly 4 moves downward, and the clamping structure 61 in the lower clamping assembly 5 moves upward. Moreover, the two clamping structures 61 in the upper clamping assembly 4 and the lower clamping assembly 5 both move in the left-right direction and approach each other, so as to realize the film pulling and film pasting of the protective film 20 to attach the upper and lower sides of the battery 10 to the protective film 20. After that, the first film roller assembly 1 starts to roll the film, and the two clamping structures 61 in the upper clamping assembly 4 and the lower clamping assembly 5 both move in the left-right direction and move away from each other. When the battery 10 approaches the second film roller assembly 2, the second film roller assembly 2 performs secondary film rolling on the battery 10. When the secondary film rolling is completed, the two clamping structures 61 in the upper clamping assembly 4 and the lower clamping assembly 5 both move in the left-right direction and approach each other, and clamp the corresponding protective film 20. After that, the protective film 20 is cut off by the cutter assembly 8. In this way, through the secondary film rolling of the battery 10 by the second film roller assembly 2, the air bubbles between the upper and lower layers of the protective film 20 and the battery 10 can be eliminated, and the protective film 20 wrapped on the battery 10 is flat and free of wrinkles.

[0047] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0048] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure does not separately describe various possible combination methods.

[0049] In addition, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.

Claims

1. A battery encapsulation mechanism, characterized in that: It includes a first film roller assembly and a second film roller assembly spaced apart along the front-to-back direction, the first film roller assembly includes a first upper film roller and a first lower film roller spaced apart along the up-down direction, the second film roller assembly includes a second upper film roller and a second lower film roller extending along the up-down direction, the first upper film roller and the second upper film roller are both used for rolling a protective film on the upper side of the battery, and the first lower film roller and the second lower film roller are both used for rolling a protective film on the lower side of the battery.

2. The battery encapsulation mechanism according to claim 1, characterized in that: The first upper film roller, the first lower film roller, the second upper film roller and the second lower film roller all include a telescopic cylinder and a body roller. The telescopic cylinder is used to drive the body roller to move up and down. An elastic member is arranged between the telescopic cylinder and the body roller.

3. The battery encapsulation mechanism according to claim 2, characterized in that: The first upper film roller, the first lower film roller, the second upper film roller and the second lower film roller all include a connecting rod and a mounting seat, the main body roller is rotatably connected to the mounting seat, the connecting rod is connected to the mounting seat, and the elastic member is connected between the connecting rod and the telescopic rod of the telescopic cylinder.

4. The battery encapsulation mechanism according to claim 3, characterized in that: A support rod is connected between the connecting rod and the telescopic rod, and the support rod is slidably connected to the connecting rod in an up-and-down direction. The elastic member is constructed as a compression spring, which is sleeved on the support rod, and one end of the compression spring abuts against the connecting rod, and the other end abuts against the telescopic rod.

5. The battery encapsulation mechanism according to claim 3, characterized in that: The first upper film roller, the first lower film roller, the second upper film roller and the second lower film roller all include a guide rail and a guide slider, the guide slider is slidably connected to the guide rail along the up and down directions, and the guide slider is fixedly connected to the connecting rod.

6. The battery encapsulation mechanism according to claim 2, characterized in that: The body roller is made of flexible material.

7. The battery encapsulation mechanism according to any one of claims 1 to 6, characterized in that: The main body roller of the second upper film roller and the main body roller of the second lower film roller each include two sub-rollers spaced apart in the left-right direction.

8. The battery encapsulation mechanism according to claim 7, characterized in that: The main body roller of the second upper film roller and the main body roller of the second lower film roller both include a transmission shaft, and the two sub-rollers are both connected to the transmission shaft.

9. The battery encapsulation mechanism according to claim 1, characterized in that: The battery film encapsulation mechanism comprises an upper clamping assembly and a lower clamping assembly spaced apart in the up-down direction, wherein the upper clamping assembly and the lower clamping assembly each comprise two clamping structures spaced apart in the left-right direction, and the clamping structures are used to clamp the protective film. The upper clamping assembly and the lower clamping assembly both include a lifting structure and a translation structure. The lifting structure is used to drive the clamping structure to move up and down, and the translation structure is used to drive the clamping structure to move left and right.

10. The battery encapsulation mechanism according to claim 9, characterized in that: The lifting structure includes a first driving structure, a first slide rail and a second slide rail, wherein the first slide rail extends in the up-down direction, the second slide rail is slidably connected to the first slide rail and extends in the left-right direction, the clamping structure is slidably connected to the second slide rail, and the first driving structure is in transmission connection with the second slide rail. The translation structure includes a second driving structure and a third slide rail, the third slide rail extends in the left-right direction, a cam slot plate is slidably connected to the third slide rail, the second driving structure is transmission-connected to the cam slot plate, and the cam slot plate is provided with a matching slot extending in the up-down direction. The clamping structure includes a cam follower slidably disposed in the mating slot.

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