Film pasting device

Abstract

The utility model relates to the technical field of adhesive films, and provides a film pasting device which comprises a first shell, a film belt conveying mechanism and a heating mechanism. Wherein a first gap is formed in the first shell; the film belt conveying mechanism comprises a feeder, a pressing roller and a material collector which are arranged in the first shell, the feeder is used for outputting a film belt, the pressing roller is located at the first notch, the film belt is output by the feeder, then bypasses the pressing roller and is connected into the material collector, and the material collector is used for collecting the film belt subjected to film pasting; the heating mechanism is arranged in the first shell and used for heating the pressing roller. According to the device, the film belt conveying mechanism and the heating mechanism are integrated in the first shell, when defects exist in film belt pasting, only the film belt at the defect position is removed, then the heating mechanism is used for heating the pressing roller, then film belt pasting is conducted, and repairing of a single film belt or part of the film belt in the battery piece is achieved.

Description

Technical Field

[0001] This application relates to the field of adhesive film technology, and in particular to an adhesive film applicator. Background Technology

[0002] Photovoltaic modules generally consist of a top sheet, a first encapsulating film, solar cells, a second encapsulating film, and a backsheet. Traditional technologies enhance the refractive index of sunlight at the module strings and cell spacing by applying glaze or film to the backsheet, thereby increasing secondary absorption of light by the solar cells and improving module power. However, in backsheet film application technology, even if a single film strip experiences issues like folding or detachment, the entire film strip on the module needs to be removed and re-attached, severely impacting backsheet application efficiency. Furthermore, the removal and re-attachment process can cause scratches on the module, affecting module yield. Utility Model Content

[0003] Based on this, this application provides a film-applying device capable of partially repairing film strips.

[0004] This application provides a film application device, the film application device comprising:

[0005] A first housing, wherein a first notch is provided on the first housing;

[0006] The film belt conveying mechanism includes a feeder, a pressure roller, and a receiver respectively disposed in the first housing. The feeder is used to output the film belt. The pressure roller is located at the first notch. After being output by the feeder, the film belt passes around the pressure roller and enters the receiver. The receiver is used to collect the film belt after it has been coated.

[0007] A heating mechanism is disposed within the first housing and is used to heat the pressure roller.

[0008] In some embodiments, the heating mechanism includes a first heater disposed on the pressure roller, the first heater being used to heat the pressure roller.

[0009] In some embodiments, the heating mechanism includes a second housing, a second heater, and a blower, wherein the second housing is disposed inside the first housing and has a second notch facing the pressure roller;

[0010] The second heater and the blower are respectively disposed in the second housing. The air outlet of the blower faces the second heater. The blower is used to drive the heat of the second heater to the pressure roller to heat the pressure roller.

[0011] In some embodiments, the heating mechanism further includes a flow equalization plate disposed between the second heater and the blower.

[0012] In some embodiments, a heat insulation layer is provided on the second housing.

[0013] In some embodiments, the membrane belt transport mechanism further includes a plurality of drive rollers disposed within the first housing, the drive rollers being used to support the membrane belt.

[0014] In some embodiments, the feeder includes a feed roller disposed within the first housing and a film roll mounted on the feed roller.

[0015] In some embodiments, the receiver includes a receiving roller disposed within the first housing and a receiving roll mounted on the receiving roller.

[0016] In some embodiments, the feeder further includes a first gear disposed on the feed roller; the take-up device further includes a second gear disposed on the take-up roller, and the first gear and the second gear are kinetically connected.

[0017] In some embodiments, the membrane belt transport mechanism further includes a drive gear disposed between the first gear and the second gear to drive the first gear and the second gear;

[0018] The diameter of the second gear is smaller than the diameter of the first gear, and the diameter of the second gear is larger than the diameter of the transmission gear.

[0019] In some embodiments, the first housing includes a first portion and a second portion that are interlocked and detachably connected.

[0020] Compared with traditional technologies, this application has at least the following beneficial effects:

[0021] This application integrates a film tape transport mechanism and a heating mechanism within a first housing. When a defect is found in the film tape adhesion, only the defective portion of the film tape is removed. Then, the heating mechanism heats the pressure roller before re-attaching the film tape, enabling the repair of single or partial film tapes within the battery cell. The heating mechanism enhances the film tape's adhesion and plasticity, improving the bonding strength and firmness between the film tape and the battery cell. Furthermore, the adhesive force during the application process drives the film tape along the pressure roller, accurately placing it at the defective location. This film-applying device is simple to operate and portable, reducing film-applying costs and minimizing secondary damage to the battery cells, thereby improving processing efficiency and product yield. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the internal structure of a film application device provided in one embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the internal structure of another film-applying device provided in one embodiment of this application.

[0024] Wherein, 100-first housing; 110-first notch; 200-film belt conveyor mechanism; 210-feeder; 211-feeding roller; 212-first gear; 213-film belt roll; 220-pressure roller; 230-receiver; 231-receiver roller; 232-second gear; 233-receiver roll; 240-drive roller; 250-drive gear; 300-heating mechanism; 310-second heater; 320-second housing; 321-second notch; 330-blower; 340-flow equalization plate. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings, embodiments, and examples. These embodiments and examples are for illustrative purposes only and are not intended to limit the scope of the present application. The purpose of providing these embodiments and examples is to enable a more thorough and comprehensive understanding of the disclosure of the present application. It should also be understood that the present application can be implemented in many different forms and is not limited to the embodiments and examples described herein. Those skilled in the art can make various modifications or alterations without departing from the spirit of the present application, and the equivalent forms obtained also fall within the protection scope of the present application. Furthermore, numerous specific details are set forth in the following description to provide a fuller understanding of the present application. It should be understood that the present application can be implemented without one or more of these details.

[0026] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0027] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "fixed," and "set" 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 meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, "optionally," "optionally," and "optional" mean that something is optional, that is, it means that it is selected from either "with" or "without." If there are multiple "optional" entries in a technical solution, unless otherwise specified, and there are no contradictions or mutual constraints, each "optional" entry shall be independent.

[0029] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.

[0030] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first," "second," etc., serve only as a non-exhaustive enumeration and should be understood not to constitute a closed limitation on quantity.

[0031] All references to this application are incorporated herein by reference as if each document were individually incorporated herein by reference. Unless they conflict with the purpose and / or technical solution of this application, all cited references are incorporated herein by reference in their entirety and for all purposes. When references are cited in this application, the definitions of relevant technical features, terms, nouns, phrases, etc., are also incorporated herein by reference. Examples and preferred embodiments of the cited technical features may also be incorporated herein by reference, but only to the extent that they enable the implementation of this application. It should be understood that when the cited content conflicts with the description in this application, this application shall prevail or modifications shall be made adaptably to the description in this application.

[0032] Traditional technologies utilize backsheet glazing or film application to enhance the secondary absorption of light by solar cells, thereby increasing module power. Film application involves attaching a film strip to the solar cell. This film strip includes an adhesive layer, a refractive layer, and a release layer. During application, the adhesive and refractive layers are attached to the solar cell. However, problems such as film strip folding or detachment can occur during application. Since traditional film application equipment applies the film strip as a whole, it cannot repair defective areas, necessitating the complete removal and reapplication of the film strip. This removal and reapplication process can easily cause scratches on the solar cells, impacting production efficiency and potentially reducing product yield.

[0033] Based on this, this application provides a film application device, such as... Figure 1 and Figure 2 As shown, the film application device includes a first housing 100, a film belt transmission mechanism 200, and a heating mechanism 300.

[0034] The first housing 100 has a first notch 110; the film conveying mechanism 200 includes a feeder 210, a pressure roller 220 and a receiver 230 respectively disposed in the first housing 100. The feeder 210 is used to output the film tape, the pressure roller 220 is located at the first notch 110, and the film tape is output by the feeder 210, passes around the pressure roller 220 and enters the receiver 230. The receiver 230 is used to collect the film tape after it has been applied; the heating mechanism 300 is disposed in the first housing 100 and is used to heat the pressure roller 220.

[0035] This application integrates a film tape transport mechanism 200 and a heating mechanism 300 within a first housing 100. When a defect is found in the film tape adhesion, only the defective area of ​​the film tape is removed. Then, the heating mechanism 300 heats the pressure roller 220 before applying the film tape, thus achieving the repair of single or partial film tapes in the battery cell. The heating mechanism 300 heats the film tape, giving it better adhesion and plasticity, improving the adhesion and firmness between the film tape and the battery cell. Furthermore, the adhesive force during application drives the film tape along the pressure roller 220, accurately applying it to the defective area. This film application device is simple to operate and portable, reducing film application costs and secondary damage to the battery cells, while improving battery cell processing efficiency and product yield.

[0036] In some embodiments, the heating mechanism 300 includes a first heater (not shown) disposed on the pressure roller 220, which heats the pressure roller 220. Optionally, the first heater may be disposed inside the pressure roller 220, heating the pressure roller 220 by generating heat inside the pressure roller 220. The first heater may also be connected to the pressure roller 220, heating the pressure roller 220 by contact. For example, the first heater may be a heating resistor.

[0037] In some embodiments, such as Figure 1 As shown, the heating mechanism 300 includes a second housing 320, a second heater 310 and a blower 330. The second housing 320 is disposed inside the first housing 100 and a second notch 321 is provided on the second housing 320, with the second notch 321 facing the pressure roller 220.

[0038] The second heater 310 and the blower 330 are respectively disposed in the second housing 320. The air outlet of the blower 330 faces the second heater 310. The blower 330 is used to drive the heat of the second heater 310 to the pressure roller 220 to heat the pressure roller 220.

[0039] This application provides a heating mechanism 300 as described above, integrating a second heater 310 and a blower 330 within a second housing 320. The blower 330 transfers heat from the second heater 310 to the pressure roller 220, thereby heating the pressure roller 220. The second housing 320 has a second notch 321, through which hot air is guided to be blown onto the pressure roller 220, effectively ensuring the heating effect on the pressure roller 220. Furthermore, the isolation provided by the second housing 320 reduces heating of the film belt not located on the pressure roller 220, preventing the film belt from sticking together during transport.

[0040] In some embodiments, such as Figure 2 As shown, the heating mechanism 300 also includes a flow equalization plate 340 disposed between the second heater 310 and the blower 330. Optionally, the flow equalization plate 340 has multiple vent holes, through which gas is evenly distributed. By setting the flow equalization plate 340, this application can ensure that the air volume blown out by the blower 330 is stable and uniform, thereby improving the heating effect on the pressure roller 220.

[0041] In some embodiments, a heat insulation layer (not shown) is provided on the second housing 320. Optionally, the heat insulation layer may be a polyurethane heat insulation layer, a perlite heat insulation layer, or an aerogel heat insulation layer. This application further improves the heat insulation capability of the second housing 320 by providing a heat insulation layer, and further reduces the problem of film tape adhesion during transmission.

[0042] In some embodiments, such as Figure 1 and Figure 2 As shown, the film conveyor mechanism 200 also includes a plurality of drive rollers 240 disposed within the first housing 100, which are used to support the film conveyor. This application utilizes the multiple drive rollers 240 to transport the film conveyor from the feeder 210 to the pressure roller 220, and to transport the release paper applied at the pressure roller 220 to the receiver 230. Furthermore, the drive rollers 240 support and guide the film conveyor, preventing it from getting stuck in the housing gaps during transport, thus effectively ensuring transport efficiency.

[0043] In some embodiments, such as Figure 1 and Figure 2 As shown, the feeder 210 includes a feed roller 211 disposed within the first housing 100 and a film roll mounted on the feed roller 211.

[0044] In some embodiments, the receiver 230 includes a receiver roller 231 disposed within the first housing 100 and a receiver roll 233 mounted on the receiver roller 231.

[0045] As described above, this application provides a feeder 210 and a receiver 230. The feeder 210 can be replaced with the film roll according to the usage, and the receiver 230 can also replace the take-up roll 233, thereby improving the ease of use and flexibility of the film application device.

[0046] In some embodiments, the feeder 210 further includes a first gear 212 disposed on the feed roller 211; the take-up device 230 further includes a second gear 232 disposed on the take-up roller 231, and the first gear 212 and the second gear 232 are connected in a driving manner. Optionally, the first gear 212 and the second gear 232 are directly engaged in a meshing transmission, or the first gear 212 and the second gear 232 are connected by other transmission methods. It is understood that the feed roller 211 is engaged with the film roll 213, and the take-up roller 231 is engaged with the take-up roll 233, that is, the feed roller 211 and the film roll 213 rotate synchronously, and the take-up roll 233 and the take-up roller 231 rotate synchronously.

[0047] This application improves the application efficiency by setting a first gear 212 and a second gear 232 for transmission connection, that is, while the feeder 210 is feeding the material, the take-up device 230 is taking the material, thereby avoiding the film strip from curling at the pressure roller 220.

[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, the membrane belt transmission mechanism 200 also includes a transmission gear 250, which is disposed between the first gear 212 and the second gear 232 to drive the first gear 212 and the second gear 232. The diameter of the second gear 232 is smaller than the diameter of the first gear 212, and the diameter of the second gear 232 is larger than the diameter of the transmission gear 250.

[0049] The diameter of each gear is set as described above in this application. The rotation speed of the first gear 212 is relatively slow. While the first gear 212 rotates to feed the material, the second gear 232 rotates to collect the material, ensuring that the film tape is in a taut state during the film application process, thereby improving the pressing effect of the pressure roller 220 on the film tape during film application.

[0050] In some embodiments, the first housing 100 includes a first portion and a second portion that are interlocked, and the first portion and the second portion are detachably connected. Optionally, the detachable connection can be a fitting connection or a bolted connection, etc. This application sets the first housing 100 as having a detachably connected first portion and second portion, thereby enabling the heating mechanism 300 and the film belt conveying mechanism 200 to be inspected and repaired after the first housing 100 is disassembled, and also facilitating the replacement of the film belt roll 213 and the take-up roll 233.

[0051] It is understood that this application Figure 1 and Figure 2Only a portion of the first housing 100 is shown in the image. Figure 1 and Figure 2 For example, the part shown can be the first part, and the second part can be a cover plate that can be placed on the first part.

[0052] In some embodiments, the width of the pressure roller 220 can be set according to the width of the film strip. The pressure roller 220 only needs to meet the width of the film strip, that is, the pressure roller 220 can cover and press the film strip in the width direction, thereby ensuring that the film strip is completely pressed and attached. Optionally, the width of the pressure roller 220 is 5mm to 6mm.

[0053] In some embodiments, the length of the first housing 100 can be 100mm to 150mm, the width can be 30mm to 70mm, and the height can be 10mm to 50mm. Furthermore, the shape of the first housing 100 can be a shape that is easy to hold, for example, an arc-shaped structure is provided on the handhold portion of the first housing 100 to improve handhold comfort and facilitate the application of force.

[0054] Exemplarily, a method for repairing a backsheet film strip using the above-described film-applying device is provided, comprising the following steps:

[0055] S1. Inspect photovoltaic modules with installation defects and remove the film tape from the defective areas.

[0056] S2. Applying film tape to the defective area using the film application device of this application includes: starting the heating mechanism 300, blowing the heat generated by the second heater 310 to the pressure roller 220 to heat the pressure roller 220, pressing the film tape at the pressure roller 220 onto the defective area under the action of heating, melting the adhesive film on the film tape under the action of heating, thereby applying the film tape onto the battery cell, moving the film application device to apply film tape to the entire defective area, and during the movement, driving the film tape roll 213 to rotate under the action of the adhesive force between the battery cell and the film tape, and at the same time driving the take-up roll 233 to rotate by the transmission gear 250, so that the film tape at the pressure roller 220 can be continuously fed, realizing continuous application of film tape.

[0057] In summary, this application integrates the film tape transmission mechanism 200 and the heating mechanism 300 within the first housing 100. When a defect is found in the film tape adhesion, only the defective area of ​​the film tape is removed. Then, the heating mechanism 300 heats the pressure roller 220 before applying the film tape, thus achieving the repair of single or partial film tapes in the battery cell. The heating mechanism 300 heats the film tape, giving it better adhesion and plasticity, improving the adhesion and firmness between the film tape and the battery cell. Furthermore, the adhesive force during application drives the film tape along the pressure roller 220, accurately applying it to the defective area. This film application device is simple to operate and portable, reducing film application costs and secondary damage to the battery cell, while improving battery cell processing efficiency and product yield.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A sticker attaching apparatus characterized by comprising: The film pasting device comprises: a first shell (100) having a first gap (110) formed therein; a film strip transmission mechanism (200) comprising an upper feeder (210), a compression roller (220) and a lower feeder (230) arranged in the first shell (100) respectively, the upper feeder (210) being configured to output a film strip, the compression roller (220) being located at the first gap (110), the film strip being wound around the compression roller (220) after being output by the upper feeder (210) and being connected to the lower feeder (230), the lower feeder (230) being configured to collect the film strip after being pasted; a heating mechanism (300) arranged in the first shell (100), the heating mechanism (300) being configured to heat the compression roller (220).

2. The film attaching apparatus according to claim 1, wherein The heating mechanism (300) comprises a first heater arranged on the compression roller (220), the first heater being configured to heat the compression roller (220).

3. The film attaching apparatus according to claim 1, wherein The heating mechanism (300) comprises a second shell (320), a second heater (310) and a blower (330), the second shell (320) being arranged in the first shell (100) and having a second gap (321) formed therein, the second gap (321) facing the compression roller (220); the second heater (310) and the blower (330) being arranged in the second shell (320) respectively, an air outlet of the blower (330) facing the second heater (310), the blower (330) being configured to drive the heat of the second heater (310) to the compression roller (220) to heat the compression roller (220).

4. The film attaching apparatus according to claim 3, wherein The heating mechanism (300) further comprises a current equalizing plate (340) arranged between the second heater (310) and the blower (330).

5. The film attaching apparatus according to claim 3, wherein The second shell (320) is provided with a heat insulation layer.

6. The device of claim 1, wherein the adhesive is a pressure sensitive adhesive. The film strip transmission mechanism (200) further comprises a plurality of transmission rollers (240) arranged in the first shell (100), the transmission rollers (240) being configured to support the film strip.

7. The film attaching apparatus according to any one of claims 1 to 6, wherein The upper feeder (210) comprises an upper feeding roller (211) arranged in the first shell (100) and a film strip roll (213) mounted on the upper feeding roller (211); and / or, The lower feeder (230) comprises a lower feeding roller (231) arranged in the first shell (100) and a lower feeding roll (233) mounted on the lower feeding roller (231).

8. The film attaching apparatus according to claim 7, wherein The upper feeder (210) further comprises a first gear (212) arranged on the upper feeding roller (211); the lower feeder (230) further comprises a second gear (232) arranged on the lower feeding roller (231), the first gear (212) and the second gear (232) being drivingly connected.

9. The film attaching apparatus according to claim 8, wherein The film belt conveying mechanism (200) further comprises a transmission gear (250) arranged between the first gear (212) and the second gear (232) to drivingly connect the first gear (212) and the second gear (232). The diameter of the second gear (232) is smaller than the diameter of the first gear (212), and the diameter of the second gear (232) is greater than the diameter of the transmission gear (250).

10. The film attaching apparatus according to any one of claims 1 to 6, wherein The first housing (100) comprises a first part and a second part which are buckled to each other and detachably connected.

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