Battery insulation film coating production line

Abstract

The utility model discloses a battery insulating film coating production line, including the material discharging disc that is set with insulating film, the insulating film conveying correction mechanism that is limited to insulating film transmission process and the film coating station, insulating film conveying correction mechanism includes insulating film conveying gyro wheel part and the film pasting front end limiting portion, and insulating film conveying gyro wheel part is close to the setting of material discharging disc, including a plurality of rotation arrangement setting's insulating film support gyro wheel, at least one insulating film support gyro wheel is provided with the first limiting structure along the insulating film conveying direction setting, and the insulating film is placed in the first limiting structure, and the film pasting front end limiting portion is close to the setting of film coating station, and the film pasting front end limiting portion is provided with the second limiting structure for the limiting of insulating film. The utility model discloses a battery insulating film coating production line, effectively reduced the position deviation in the insulating film conveying process, improved the precision when insulating film pasting, avoided the insulating failure due to the non -strict coating of the white space.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a battery insulating film coating production line. Background Technology

[0002] To improve the safety performance of power batteries, insulating varnish needs to be sprayed onto the battery surface for insulation, better protecting the surface of the new energy battery and improving its weather resistance, corrosion resistance, and insulation performance. The insulating varnish is sprayed on the sides and bottom of the battery. To prevent the varnish film from spraying onto the terminal structure on the top surface of the battery, a blank area is reserved near the top of the battery side where no varnish film is sprayed. This blank area needs to be covered with an insulating film to provide insulation for this part. The width of the blank area is generally a few millimeters, so the width of the insulating film is also relatively narrow. Due to the narrow width of the insulating film, high precision is required when covering it onto the battery; large deviations will cause the insulating film to deviate from the target position, thus failing to cover the blank area. Utility Model Content

[0003] In view of this, the present invention provides a battery insulation film coating production line, which effectively reduces the positional deviation during the insulation film transportation process, improves the accuracy of insulation film application, avoids the insulation film deviating from the blank area of ​​the battery, and avoids insulation failure caused by incomplete coating of the blank area.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A battery insulating film coating production line includes a feeding tray with an insulating film wound on it, an insulating film conveying and correction mechanism for limiting the conveying process of the insulating film, and a coating station. The insulating film conveying and correction mechanism includes an insulating film conveying roller section and a film-applying front-end limiting section. The insulating film conveying roller section is located near the feeding tray and includes a plurality of rotatably arranged insulating film support rollers. At least one of the insulating film support rollers is provided with a first limiting structure arranged along the conveying direction of the insulating film. The insulating film is placed in the first limiting structure. The film-applying front-end limiting section is located near the coating station and is provided with a second limiting structure for limiting the position of the insulating film.

[0006] As can be seen from the above technical solution, the battery insulating film coating production line provided by this utility model, by setting up multiple insulating film support rollers during the conveying process of the insulating film, and at least one of the insulating film support rollers is provided with a limiting groove arranged along the conveying direction of the insulating film, the limiting groove is used to release stress and correct positional deviation of the insulating film during the conveying process, thereby reducing the twisting of the insulating film during the conveying process and reducing the positional deviation of the insulating film during the conveying process. At the same time, a second limiting structure is provided on the limiting part at the front end of the film to further limit the insulating film before coating, and to prevent the positional deviation of the insulating film during the coating of the blank area of ​​the battery. The battery insulating film coating production line of this utility model, by setting the first limiting structure and the second limiting structure, effectively reduces the positional deviation of the insulating film during the conveying process, improves the positional accuracy of the insulating film during coating, prevents the insulating film from deviating from the blank area of ​​the battery, and avoids the insulation failure of the battery due to the incomplete coating of the blank area. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 A schematic diagram of the battery insulating film coating production line provided in an embodiment of this utility model from one angle;

[0009] Figure 2 This is a structural schematic diagram of the battery insulating film coating production line provided in an embodiment of the present invention from another angle;

[0010] Figure 3 This is a structural schematic diagram from another angle of the battery insulating film coating production line provided in this embodiment of the utility model;

[0011] Figure 4 This is a schematic diagram of the structure of the first type of roller provided in the embodiments of this utility model;

[0012] Figure 5 This is a schematic diagram of the structure of the limiting ring provided in an embodiment of the present utility model;

[0013] Figure 6 for Figure 5 A cross-sectional view of the AA position in the diagram;

[0014] Figure 7 This is a schematic diagram of the structure of the second type of roller provided in an embodiment of the present utility model;

[0015] Figure 8 A schematic diagram showing the spacing between adjacent insulating film support rollers along the insulating film conveying direction, provided in an embodiment of this utility model;

[0016] Figure 9 A schematic diagram of the structure of the film-applying front-end limiting part at one angle provided in an embodiment of this utility model;

[0017] Figure 10 A schematic diagram of the front end limiting part of the film application device from another angle, provided in an embodiment of this utility model;

[0018] Figure 11 A structural schematic diagram of the position of the limiting bracket provided in an embodiment of this utility model;

[0019] Figure 12 This is a structural schematic diagram showing the position of the limiting hole provided in an embodiment of the present utility model.

[0020] in:

[0021] 1. Support frame, 2. Centrifugal paper, 3. Receiving tray, 4. First type of roller, 401. First roller body, 402. Limiting ring, 4021. Connecting threaded hole, 403. First limiting groove, 404. First connecting piece, 5. Discharging tray, 6. Insulating film, 7. Sensor bracket, 8. Second type of roller, 801. Second roller body, 802. Second limiting groove, 9. Film application front limiting part, 901. Limiting bracket, 9011. Limiting leg, 9012. Limiting plate, 9013. Scale, 9014. Limiting hole, 9015. Film passage gap, 902. First fixing part, 903. Second fixing part, 904. First electric cylinder, 10. Supporting cross plate, 11. Auxiliary support roller, 12. Second electric cylinder, 13. Tool holder, 14. Battery, 15. Insulating film rolling roller. Detailed Implementation

[0022] This utility model discloses a battery insulation film coating production line, which effectively reduces the positional deviation during the insulation film transportation process, improves the accuracy of insulation film application, avoids the insulation film deviating from the blank area of ​​the battery, and avoids insulation failure caused by incomplete coating of the blank area.

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] See Figures 1 to 12This utility model discloses a battery insulating film coating production line, comprising a feeding tray 5 on which an insulating film 6 is wound, an insulating film conveying and correction mechanism for limiting the transmission of the insulating film 6, and a coating station for applying the insulating film 6. The insulating film conveying and correction mechanism includes an insulating film conveying roller section and a film-applying front-end limiting section 9. The insulating film conveying roller section is located near the feeding tray 5 and includes multiple insulating film support rollers arranged in a rotating manner. At least one of the insulating film support rollers is provided with a first limiting structure arranged along the conveying direction of the insulating film 6, and the insulating film 6 is placed within the first limiting structure. The film-applying front-end limiting section 9 is located near the coating station for the insulating film 6, and the film-applying front-end limiting section 9 is provided with a second limiting structure for limiting the insulating film 6.

[0025] The material feeding tray 5 unloads the insulating film 6 wound on it. After the insulating film 6 is wound around a plurality of insulating film support rollers in sequence, it passes through the front end limiting part 9 of the film application to the film wrapping station. At the film wrapping station, the insulating film 6 is attached to the corresponding blank area of ​​the battery 14.

[0026] This utility model discloses a battery insulating film coating production line. By incorporating multiple insulating film support rollers during the conveying process of the insulating film 6, at least one of these support rollers is equipped with a limiting groove along the conveying direction of the insulating film. This limiting groove is used to release stress and correct positional deviations of the insulating film 6 during conveying, thereby reducing twisting and positional deviations during transport. Simultaneously, a second limiting structure is provided on the front-end limiting part 9 of the film-applying section to further limit the position of the insulating film 6 before coating, preventing positional deviations during the coating process of the insulating film 6 onto the blank area of ​​the battery 14. This battery insulating film coating production line, by incorporating the first and second limiting structures, effectively reduces positional deviations during the conveying process of the insulating film 6, improves the positional accuracy of the insulating film 6 during application, prevents the insulating film 6 from deviating from the blank area of ​​the battery 14, and avoids insulation failure of the battery 14 due to incomplete coating of the blank area.

[0027] Specifically, the first limiting structure is a limiting groove. The insulating film support roller includes several first-type rollers 4 and several second-type rollers 8. The first-type rollers 4 are provided with a first limiting groove 403 with adjustable width, such as... Figure 4As shown, the second type of roller 8 is provided with a second limiting groove 802 whose width is not adjustable. Specifically, the minimum groove width of the first limiting groove 403 is greater than the groove width of the second limiting groove 802. The first limiting groove 403 provides a coarse limit for the conveyed insulating film 6, while the groove width of the second limiting groove 802 is close to the width of the insulating film 6, providing a precise limit for the conveying of the insulating film 6. At least a portion of the plurality of first type rollers 4 are closer to the feeding tray 5 than the second type of roller 8, thereby facilitating stress release of the insulating film wound on the feeding tray 5. By coordinating the first type of rollers 4 and the second type of roller 8, both stress release during the winding of the insulating film 6 is satisfied, preventing twisting and deformation during conveying, and the positional accuracy requirements of the insulating film 6 during conveying are also met.

[0028] In order to reduce the friction between the insulating film 6 and the limiting groove on the insulating film support roller during the conveying process, both the first type of roller 4 and the second type of roller 8 are rotatably arranged. Correspondingly, the first limiting groove 403 and the second limiting groove 802 are both annular grooves arranged around the circumference of the corresponding roller.

[0029] To meet the requirement of adjustable width of the first limiting groove 403, the first type of roller 4 includes a first wheel body 401 and limiting rings 402. To form the limiting groove, two limiting rings 402 are provided, and the two limiting rings 402 are sleeved and detachably connected to the first wheel body 401, such as... Figure 4 As shown, the inner surface of the limiting ring 402 contacts the outer surface of the first wheel body 401, and the two limiting rings 402 are spaced apart by a set distance to form a first limiting groove 403. With the above structure, the groove width of the first limiting groove 403 can be adjusted by adjusting the interval between the two limiting rings 402, which is convenient, quick, and has a wider range of applications.

[0030] Specifically, the limiting ring 402 is connected to the first wheel body 401 via the first connector 404. The use of the first connector 404 facilitates the fixing and positional adjustment of the limiting ring 402 on the first wheel body 401.

[0031] The first connecting member 404 can be a connecting screw or bolt, or other commonly used connecting members in the art, and is not limited here. The tail end of the first connecting member 404 can be fixed by abutting against the surface of the first wheel body 401, or the tail end of the first connecting member 404 can be threaded into a threaded hole on the first wheel body 401. The first connecting member 404 adopts an abutting connection method, which allows for more flexible position adjustment. One or both ends of the first wheel body 401 are provided with rolling bearing support.

[0032] To improve the reliability of the fixation, at least two first connecting members 404 are provided on each limiting ring 402, and multiple first connecting members 404 are provided on the limiting ring 402. In a specific embodiment, refer to... Figures 4 to 6As shown, the first connector 404 is provided with four parts, and correspondingly, the limiting ring 402 is provided with four threaded holes 4021, all of which are located on the limiting ring 402.

[0033] The first limiting groove 403 has a groove width of W1mm, and the insulating film 6 has a width of W2mm. Figure 4 As shown, W1mm is greater than W2mm, and the difference between W1mm and W2mm ranges from 1 mm to 3 mm, specifically any value of 1mm, 2mm, or 3mm, or a value between any two of these values. Setting the difference between W1mm and W2mm within this range ensures that the width of the offset during stress release of the insulating film 6 during transport is within acceptable limits, preventing excessive offset during transport. W1mm ranges from 5 mm to 22mm, specifically any value of 5mm, 13mm, or 22mm, or a value between any two of these values. W2mm ranges from 4 mm to 20mm, specifically any value of 4mm, 12mm, or 20mm, or a value between any two of these values.

[0034] Furthermore, the width of the second limiting groove 802 is W3mm, such as... Figure 7 As shown, the width of the insulating film 6 is W2mm, and W3mm is greater than W2mm. The difference between W3mm and W2mm ranges from 0.5mm to 1.5mm, specifically any value among 0.5mm, 1mm, and 1.5mm, or any value between any two. Setting the difference between W2mm and W3mm within this range achieves precise positioning of the insulating film 6. In this embodiment, the range of W3mm is 4.5mm to 21mm, specifically any value among 4.5mm, 12mm, and 21mm, or any value between any two. The range of W2mm is 4mm to 20mm, specifically any value among 4mm, 12mm, and 20mm, or any value between any two.

[0035] Specifically, the second type of roller 8 includes a second wheel body 801, and a second limiting groove 802 is an annular groove formed on the second wheel body 801. To improve the reliable support of the second wheel body 801, bearings are provided at both ends of the second wheel body 801 for rolling support. The axial position of the second limiting groove 802 on the second wheel body 801 is set according to actual needs.

[0036] To facilitate support of the insulating film support rollers, the insulating film support rollers are rotatably mounted on the support frame 1. The width W3 of the second limiting groove 802 is smaller than the width W1 of the first limiting groove 403. The distance between the first limiting groove 403 and the support frame 1 is less than or equal to the distance between the second limiting groove 802 and the support frame 1. Specifically, the first limiting groove 403 includes a first groove wall and a second groove wall, which are understood to be the sides formed by the limiting ring 402. The first groove wall is located close to the support frame 1, and the second groove wall is located away from the support frame 1. The second limiting groove 802 includes a third groove wall and a fourth groove wall, with the third groove wall located close to the support frame 1 and the fourth groove wall located away from the support frame 1. The distance between the first groove wall and the support frame 1 is less than or equal to the distance between the third groove wall and the support frame 1; the distance between the third groove wall and the support frame 1 is greater than or equal to the distance between the fourth groove wall and the support frame 1.

[0037] To facilitate monitoring of whether the insulating film 6 is twisted during transport, a sensor bracket 7 is also provided on the support frame 1. The sensor bracket 7 is used to mount sensors to detect whether the insulating film 6 is twisted. The number and position of the sensor brackets 7 are set according to actual needs, with at least one sensor placed at the rear end of the last roller in the insulating film support rollers to prevent twisting of the insulating film 6 transported to the battery 14. The "rear end" refers to the position reached later in the transport direction of the insulating film 6.

[0038] To improve the support reliability of the insulating film 6 during transport, the spacing between adjacent insulating film support rollers along the transport direction of the insulating film 6 is L mm, as follows: Figure 8 As shown, Lmm ranges from 80 mm to 500 mm, specifically any value among 80 mm, 150 mm, 300 mm, and 500 mm, or any value between two of these. The spacing Lmm is the distance between the center positions of two adjacent insulating film support rollers along the conveying direction of the insulating film 6. By limiting the range of Lmm, excessively long transmission paths of the insulating film 6 between adjacent support rollers are avoided, preventing twisting or offset, ensuring reliable support of the insulating film 6 during conveying, and also preventing increased costs caused by excessively dense conveying of the support rollers.

[0039] To improve the connection reliability between the insulating film 6 and the battery 14, one side of the insulating film 6 is an adhesive surface coated with an adhesive layer, and the other side is an uncoated adhesive backing surface. Due to the performance difference between the adhesive surface and the adhesive backing surface, the insulating film support rollers include an adhesive backing surface support roller and an adhesive surface support roller. The adhesive backing surface support roller supports the adhesive backing surface of the insulating film 6, and the adhesive surface support roller supports the adhesive surface of the insulating film 6. It is understood that the position of the adhesive surface support roller supporting the adhesive surface is not easily bonded to the insulating film 6, so as to facilitate the smooth transport of the insulating film 6. Specifically, the adhesive backing surface support roller is made of aluminum, and the surface of the adhesive surface support roller that contacts the insulating film is coated with an anti-stick coating. The anti-stick coating is made of polytetrafluoroethylene or perfluoroalkoxy resin. The specific location and number of the adhesive backing surface support roller and the adhesive surface support roller are determined according to the actual situation and are not limited here.

[0040] In one embodiment, the front end limiting portion of the film application includes a limiting bracket 901, such as... Figures 9 to 11 As shown, the limiting bracket 901 is provided with two spaced-apart limiting legs 9011, and a membrane passage gap 9015 is provided between the two limiting legs 9011 for the insulating film 6 to pass through. A limiting plate 9012 is connected to one limiting leg 9011 near the membrane passage gap 9015. The limiting plate 9012 is provided with a membrane passage notch. The membrane passage notch and the other limiting leg 9011 form the second limiting structure. The second limiting structure is a limiting hole 9014. The width of the limiting hole 9014 is D1mm, and the thickness of the insulating film 6 is D2mm. Figure 12 As shown, the numerical range of D1 / D2 is 1.1-1.5, specifically any value among 1.1, 1.3, and 1.5, or a value between any two values. Setting the values ​​of D1 / D2 within this range ensures reliable positioning of the insulating film while preventing jamming caused by an excessively small gap between the limiting hole 9014 and the insulating film 6. A scale 9013 is connected to the limiting leg 9011 opposite to the limiting plate 9012. Furthermore, the difference between the width D1mm of the limiting hole 9014 and the thickness D2mm of the insulating film 6 is 0.2mm-0.8mm, specifically any value among 0.2mm, 0.5mm, and 0.8mm, or a value between any two values, to ensure reliable positioning of the insulating film 6.

[0041] To prevent the insulating film 6 from twisting during cutting, the rear end of the limiting bracket 901 is provided with a first fixing part 902 and a second fixing part 903 for fixing the insulating film 6. The first fixing part 902 and the second fixing part 903 are spaced apart along the conveying direction of the insulating film 6. A cutting blade that is raised and lowered along the height direction is provided between the first fixing part and the second fixing part. The cutting blade is suspended at the top of the insulating film 6 and is mounted on the blade holder 13. The blade holder 13 is raised and lowered along the height direction under the drive of the second electric cylinder 12 to facilitate cutting the insulating film 6.

[0042] To clamp and release the insulating film 6, both the first fixing part 902 and the second fixing part 903 include a fixed clamping plate and a movable clamping plate, which are respectively disposed on both sides of the insulating film 6. The movable clamping plate moves in the direction of the horizontally perpendicular direction of the insulating film 6 at the corresponding position. The movable clamping plate is driven by a power device. Specifically, the movable clamping plate is driven by a first electric cylinder 904.

[0043] The battery insulating film coating production line of this utility model further includes an insulating film coating station, on which a battery 14 is arranged. An insulating film rolling roller 15 is arranged next to the battery 14, with the position of the insulating film rolling roller 15 corresponding to the position of the insulating film on the battery 14. The insulating film rolling roller 15 is used to roll the insulating film 6 coated on the battery 14. The surface of the insulating film rolling roller 15 is covered with a flexible material layer, which can be a rubber layer. The insulating film rolling roller 15 is driven by a third electric cylinder.

[0044] To improve the support reliability of the vertically installed support frame 1, a horizontally installed support plate 10 is fixedly connected to the bottom end of the support frame 1. The support plate 10 is welded to the support frame 1, and the support plate 10 and the support frame 1 are also connected by reinforcing ribs.

[0045] In another embodiment, when the insulating film 6 wrapped around the feeding tray 5 has centrifugal paper 2 adhered to its adhesive surface, a receiving tray 3 is also provided on the support frame 1. The receiving tray 3 is used to collect the centrifugal paper 2 torn off the insulating film 6. In order to improve the smoothness of collecting the centrifugal paper 2, a number of auxiliary support rollers 11 are provided along the conveying direction of the centrifugal paper 2. The multiple auxiliary support rollers 11 are rotatably connected to the support frame 1.

[0046] The battery insulation film coating production line of this utility model meets the precision requirements when coating the insulation film 6, ensures that the insulation film can cover the blank area, and avoids insulation failure caused by failure of the coating position of the insulation film 6.

[0047] In the description of this solution, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this solution, "multiple" means two or more, unless otherwise explicitly specified.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery insulation film coating production line characterized by comprising: The device includes a feeding tray with an insulating film wound on it, an insulating film conveying and correction mechanism for limiting the conveying process of the insulating film, and a wrapping station. The insulating film conveying and correction mechanism includes an insulating film conveying roller section and a film-applying front-end limiting section. The insulating film conveying roller section is located near the feeding tray and includes multiple insulating film support rollers arranged in a rotating manner. At least one of the insulating film support rollers is provided with a first limiting structure arranged along the conveying direction of the insulating film. The insulating film is placed in the first limiting structure. The film-applying front-end limiting section is located near the wrapping station and is provided with a second limiting structure for limiting the position of the insulating film.

2. The battery insulation film wrapping production line according to claim 1, wherein, The first limiting structure is a limiting groove; The insulating film support roller includes a plurality of first-type rollers and a plurality of second-type rollers. The first-type rollers are provided with a first limiting groove with adjustable width, and the second-type rollers are provided with a second limiting groove with non-adjustable width. The minimum groove width of the first limiting groove is greater than the groove width of the second limiting groove. At least a portion of the plurality of first-type rollers are positioned closer to the feed tray than the second-type rollers.

3. The battery insulating film coating production line according to claim 2, characterized in that, Both the first limiting groove and the second limiting groove are annular grooves arranged circumferentially around the corresponding roller.

4. The battery insulating film coating production line according to claim 2, characterized in that, The first type of roller includes a first wheel body and two limiting rings. The two limiting rings are sleeved on and detachably connected to the first wheel body, and the two limiting rings are spaced apart by a set distance to form the first limiting groove.

5. The battery insulating film coating production line according to claim 4, characterized in that, The limiting ring is connected to the first wheel body via a first connector.

6. The battery insulation film wrapping production line according to claim 5, wherein The first connecting component is a connecting screw, connecting bolt, or connecting stud; The tail end of the first connector abuts against the surface of the first wheel body, or the tail end of the first connector is threaded onto the first wheel body.

7. The battery insulating film coating production line according to claim 5, characterized in that, At least two first connectors are provided on each of the limiting rings, and multiple first connectors are provided on the limiting rings.

8. The battery insulating film coating production line according to any one of claims 2-7, characterized in that, The width of the first limiting groove is W1mm, and the width of the insulating film is W2mm. W1mm is greater than W2mm, and the difference between W1 and W2 is in the range of 1mm-3mm.

9. The battery insulating film coating production line according to claim 8, characterized in that, The range of W1mm is 5 mm - 22 mm, and the range of W2mm is 4 mm - 20 mm.

10. The battery insulating film coating production line according to any one of claims 2-7, characterized in that, The width of the second limiting groove is W3mm, the width of the insulating film is W2mm, W3mm is greater than W2mm, and the difference between W3mm and W2mm is in the range of 0.5mm-1.5mm.

11. The battery insulation film wrapping production line according to claim 10, wherein The W3mm range is 4.5 mm to 21 mm, and the W2mm range is 4 mm to 20 mm.

12. The battery insulation film wrapping production line of claim 2, wherein, The second type of roller includes a second wheel body, and the second limiting groove is an annular groove formed on the second wheel body.

13. The battery insulation film wrapping production line of claim 2, wherein, The insulating film support rollers are rotatably mounted on the support frame.

14. The battery insulating film coating production line according to claim 1, characterized in that, Along the conveying direction of the insulating film, the distance between adjacent insulating film support rollers is Lmm, and Lmm ranges from 80 mm to 500 mm.

15. The battery insulation film wrapping production line of claim 1, wherein, At least one of the insulating film support rollers is coated with an anti-stick coating.

16. The battery insulating film coating production line according to claim 15, characterized in that, The insulating film support roller coated with the anti-stick coating is made of aluminum, and the surface of the aluminum roller that comes into contact with the insulating film is coated with the anti-stick coating.

17. The battery insulating film coating production line according to claim 1, characterized in that, The front end limiting part of the film application includes a limiting bracket, on which two limiting legs are provided at intervals. A film-passing gap is provided between the two limiting legs for the insulating film to pass through. A limiting plate is connected to one of the limiting legs near the film-passing gap. The limiting plate and the other limiting leg form a second limiting structure with adjustable limiting width.

18. The battery insulation film wrapping production line of claim 17, wherein, The second limiting structure is a limiting hole with a width of D1mm and a thickness of D2mm for the insulating film. The value range of D1 / D2 is 1.1-1.

5.

19. The battery insulating film coating production line according to claim 18, characterized in that, The difference between the width of the limiting hole and the thickness of the insulating film is 0.2 mm - 0.8 mm.

20. The battery insulating film coating production line according to claim 17, characterized in that, The rear end of the limiting bracket is provided with a first fixing part and a second fixing part for fixing the insulating film. The first fixing part and the second fixing part are spaced apart along the conveying direction of the insulating film. A cutting blade that is raised and lowered along the height direction is provided between the first fixing part and the second fixing part.

21. The battery insulating film coating production line according to claim 20, characterized in that, Both the first fixing part and the second fixing part include a fixed clamping plate and a movable clamping plate, which are respectively disposed on both sides of the insulating film. The movable clamping plate moves in a direction that is horizontal and perpendicular to the insulating film.

22. The battery insulating film coating production line according to claim 21, characterized in that, The movable clamping plate is driven by a first electric cylinder.

23. The battery insulating film coating production line according to claim 1, characterized in that, It also includes an insulating film coating station, on which a battery is placed, and an insulating film rolling roller is placed next to the battery. The position of the insulating film rolling roller corresponds to the position of the insulating film coating on the battery. The insulating film rolling roller is used to roll the insulating film coated on the battery. The surface of the insulating film rolling roller is covered with a flexible material layer.

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