Membrane line compounding equipment for photovoltaic module

Abstract

The utility model belongs to the field of photovoltaic technology, and discloses a photovoltaic module film wire compound device, which comprises a solder strip pay-off device, two adhesive film laminating devices, a film wire traction device and a film wire winding device, the two adhesive film laminating devices are symmetrically arranged on two sides of a solder strip, and the two adhesive film laminating devices are symmetrically arranged on two sides of the solder strip. The adhesive film laminating device is arranged on the welding strip and used for laminating adhesive films towards the two sides of the welding strip to form film lines, the film line traction device is located on the downstream portion of the adhesive film laminating device in the conveying direction of the welding strip and used for dragging the welding strip, and the film line winding device is located on the downstream portion of the film line traction device in the conveying direction of the welding strip and used for winding the welding strip. According to the photovoltaic module film line composite equipment, the welding strip can be always kept in a tightened state in the production process, the probability that the welding strip is bent is reduced, the streamline from the wire outlet end of the welding strip to the winding end of the film line is short, the front face adhesive film and the back face adhesive film are attached to the front face and the back face of the welding strip at the same station, and the film pasting precision and the film pasting efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a photovoltaic module film-wire composite device. Background Technology

[0002] In existing solar cell module production, cell strings are typically produced by welding cells to solder ribbons. This involves welding the printed metal grid lines of the cells to the solder ribbons to form an alloy layer. However, this method requires precise alignment between the solder points of the grid lines and the solder ribbons; otherwise, the welding performance will be affected. Furthermore, misalignment between the solder ribbons and solder points reduces the effective light-receiving area of ​​the cells, thus impacting the overall efficiency and quality of the module. To address this issue, existing technology has proposed a film-to-wire composite cell string production device. This device first alternately laminates the thin film and solder ribbons together in a front-to-back sequence to form a film-to-wire composite. Subsequently, this composite is cut into segments, and the cells are bonded together. This method eliminates the need for printed soldering grids and solder pads on the cells, effectively reducing the metallization cost of the cells. Additionally, the increased light-receiving area of ​​the cells improves the module efficiency to some extent.

[0003] Existing membrane-wire composite battery string production equipment has the following technical problems:

[0004] First: The solder ribbon cannot maintain a taut state during travel, and it will bend significantly during the film-line lamination process;

[0005] Second: The front and back adhesive films are hot-pressed at different work stations, which makes the streamline longer during the process of the solder ribbon exiting the line and being wound up at the rear end. The solder ribbon is easily stretched and elongated, which is not conducive to the alignment of the position when the adhesive films are interlaced and bonded. Utility Model Content

[0006] The purpose of this invention is to provide a photovoltaic module film-line lamination equipment. During the production process, the welding ribbon can always be kept taut, reducing the probability of the welding ribbon bending. The streamline from the exit end of the welding ribbon to the winding end of the film line is shorter. The front and back adhesive films are laminated to the front and back sides of the welding ribbon at the same station, improving the film lamination accuracy and efficiency.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This utility model discloses a photovoltaic module film-wire composite equipment, comprising: a solder strip feeding device capable of transporting multiple strands of solder strip; two adhesive film bonding devices located downstream of the solder strip feeding device along the transport direction of the solder strip, the two adhesive film bonding devices being symmetrically arranged on both sides of the solder strip and used to bond adhesive films toward both sides of the solder strip to form film wires; a film wire traction device located downstream of the adhesive film bonding devices along the transport direction of the solder strip and used to traction the solder strip; and a film wire winding device located downstream of the film wire traction device along the transport direction of the solder strip and used to wind up the solder strip.

[0009] In some embodiments, the ribbon feeding device includes a plurality of ribbon feeding units spaced apart along a first direction, each ribbon feeding unit including a plurality of ribbon feeding reels spaced apart along a second direction, and each ribbon feeding unit further including a first feeder wheel for collecting the ribbons transported by the plurality of ribbon feeding reels; the photovoltaic module film-wire composite equipment further includes a second feeder wheel, which is located downstream of the first feeder wheel along the ribbon transport direction and is used to collect the ribbons transported by the plurality of first feeder wheels.

[0010] In some embodiments, the photovoltaic module film-wire composite equipment further includes a ribbon shaping device. Along the transport direction of the ribbon, the ribbon shaping device is located between the ribbon feeding device and the adhesive film bonding device. The ribbon shaping device has two shaping wheels, which abut against opposite sides of the ribbon to shape the ribbon.

[0011] In some optional embodiments, the two shaping wheels are a fixed shaping wheel and a movable shaping wheel. The fixed shaping wheel is fixedly mounted on the shaping bracket of the welding strip shaping device, and the movable shaping wheel is movably mounted on the shaping bracket. The movable shaping wheel can move towards or away from the fixed shaping wheel under the drive of the shaping drive component.

[0012] In some embodiments, the photovoltaic module film-wire composite equipment further includes a film-wire winding buffer device. Along the transport direction of the welding strip, the film-wire winding buffer device is disposed between the film-wire traction device and the film-wire winding device. The film-wire winding buffer device includes two first guide rollers and a first buffer roller disposed between the two first guide rollers. The distance between the first buffer roller and the first guide roller is adjustable.

[0013] In some embodiments, the photovoltaic module film-line composite equipment further includes a film-line detection device, which is located between the adhesive film bonding device and the film-line traction device along the transport direction of the welding strip.

[0014] In some embodiments, the adhesive film bonding apparatus includes: an adhesive film unwinding mechanism having an adhesive film roll and for outputting the adhesive film; an adhesive film cutting mechanism located downstream of the adhesive film unwinding mechanism along the transport direction of the adhesive film and for dividing the adhesive film into multiple pieces; an adhesive film storage mechanism located downstream of the cutting mechanism along the transport direction of the adhesive film and for receiving the divided pieces of the adhesive film; and an adhesive film output mechanism having one end connected to the adhesive film storage mechanism along the transport direction of the adhesive film to sequentially receive multiple pieces of the adhesive film, and the other end abutting against the solder ribbon; wherein the adhesive film output mechanisms of the two adhesive film bonding apparatuses abut against both sides of the solder ribbon, and when the solder ribbon passes through the adhesive film output mechanism, the adhesive film on the adhesive film output mechanism can be transferred and bonded to the solder ribbon.

[0015] In some specific embodiments, the adhesive film temporary storage mechanism includes a conveyor belt mechanism, and the adhesive film bonding device includes a vacuum adsorption conveyor belt mechanism. Along the transport direction of the adhesive film, the conveyor belt mechanism and the vacuum adsorption conveyor belt mechanism partially overlap.

[0016] In some specific embodiments, the adhesive film bonding device further includes an adhesive film buffer unwinding mechanism, which is located between the adhesive film unwinding mechanism and the adhesive film cutting mechanism along the transport direction of the adhesive film; wherein: the adhesive film buffer unwinding mechanism includes two second guide rollers and a second buffer roller disposed between the two second guide rollers, and the distance between the second buffer roller and the second guide roller is adjustable.

[0017] In some specific embodiments, the adhesive film bonding device further includes an adhesive film correction device, which is located between the adhesive film buffer unwinding mechanism and the adhesive film cutting mechanism along the transport direction of the adhesive film; the adhesive film correction device includes two movable correction wheels.

[0018] The photovoltaic module film-to-line lamination equipment of this utility model has the following advantages: Before operation, the solder ribbon is led out from the solder ribbon unloading device and then connected to the film-to-line winding device via the film-to-line traction device. During the film-to-line manufacturing process, the film-to-line traction device is activated to pull the solder ribbon out from the solder ribbon unloading device and continues to move. When the solder ribbon moves to the two adhesive film bonding devices, the two adhesive film bonding devices can bond the adhesive film towards both sides of the solder ribbon to form a film-to-line. The film-to-line winding device can wind the formed film-to-line into a roll during rotation. The solder ribbon unloading device cannot actively output the solder ribbon, but outputs the solder ribbon under the pulling action of the film-to-line traction device. The solder ribbon is unwound in a passive unwinding mode to ensure that the solder ribbon always remains taut and to avoid the solder ribbon bending during the lamination process between the solder ribbon and the adhesive film. In addition, since the two adhesive film bonding devices are symmetrically arranged on both sides of the welding strip, the front adhesive film and the back adhesive film are bonded to the front and back sides of the welding strip at the same station. This not only shortens the streamline length from the exit end of the welding strip to the winding end of the film line, but also improves the film bonding accuracy and efficiency.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the photovoltaic module film-wire composite equipment according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the bonding process between the solder ribbon and the adhesive film.

[0022] Figure 3 This is a schematic diagram of the structure of the welding strip feeding device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the welding strip shaping device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the film winding buffer device according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the adhesive film bonding device according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the adhesive film output mechanism in an embodiment of the present invention during adhesive application.

[0027] Figure label:

[0028] 100. Welding strip feeding device; 110. Welding strip feeding unit; 111. Welding strip feeding reel; 112. First wire feeding wheel;

[0029] 200. Adhesive film laminating device; 210. Adhesive film unwinding mechanism; 220. Adhesive film cutting mechanism; 230. Adhesive film temporary storage mechanism; 240. Adhesive film output mechanism; 250. Adhesive film buffer unwinding mechanism; 251. Second guide roller; 252. Second buffer roller; 260. Adhesive film correction device; 261. Correction roller;

[0030] 300. Membrane line traction device;

[0031] 400. Film winding device;

[0032] 500, Second Busbar Wheel;

[0033] 600. Welding strip shaping device; 610. Fixed shaping wheel; 620. Movable shaping wheel; 630. Shaping bracket; 640. Shaping drive component;

[0034] 700. Film winding buffer device; 710. First winding wheel; 720. First buffer wheel;

[0035] 800. Membrane line detection device; 10. Welding strip; 20. Adhesive film. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] This utility model discloses a photovoltaic module film-wire composite device, referenced Figure 1 and Figure 2 As shown, the photovoltaic module film-wire composite equipment of this embodiment includes a ribbon feeding device 100, two adhesive film bonding devices 200, a film wire traction device 300, and a film wire winding device 400. The ribbon feeding device 100 can transport multiple strands of ribbon 10. Along the transport direction of the ribbon 10, the two adhesive film bonding devices 200 are located downstream of the ribbon feeding device 100 and are symmetrically arranged on both sides of the ribbon 10. They are used to bond adhesive films 20 towards both sides of the ribbon 10 to form film wires. Along the transport direction of the ribbon 10, the film wire traction device 300 is located downstream of the adhesive film bonding device 200 and is used to traction the ribbon 10. Along the transport direction of the ribbon 10, the film wire winding device 400 is located downstream of the film wire traction device 300 and is used to wind up the ribbon 10.

[0040] Understandably, before the work begins, the welding ribbon 10 is led out from the welding ribbon unloading device 100, passes through the film line traction device 300, and connects to the film line winding device 400. During the film line manufacturing process, the film line traction device 300 is activated to pull the welding ribbon 10 out of the welding ribbon unloading device 100 and continues to move. When the welding ribbon 10 moves to the two adhesive film bonding devices 200, the two adhesive film bonding devices 200 can bond the adhesive film 20 towards both sides of the welding ribbon 10 to form a film line. The film line winding device 400 can wind the formed film line into a roll during rotation. In this embodiment, the welding ribbon unloading device 100 cannot actively output the welding ribbon 10, but outputs the welding ribbon 10 under the pulling action of the film line traction device 300. The welding ribbon 10 adopts a passive unwinding mode to ensure that the welding ribbon 10 always remains taut and to avoid the welding ribbon 10 bending during the bonding process between the welding ribbon 10 and the adhesive film 20. In addition, since the two adhesive film bonding devices 200 are symmetrically arranged on both sides of the welding ribbon 10, the front adhesive film 20 and the back adhesive film 20 are bonded to the front and back sides of the welding ribbon 10 at the same station, which not only shortens the streamline length from the exit end of the welding ribbon 10 to the winding end of the film line, but also improves the film bonding accuracy and efficiency.

[0041] It should be noted that the specific structure of the membrane traction device 300 can be selected based on existing technology, and there is no need to describe or limit the structure of the membrane traction device 300 here.

[0042] refer to Figure 3As shown, the ribbon feeding device 100 includes multiple ribbon feeding units 110 spaced apart along a first direction. Each ribbon feeding unit 110 includes multiple ribbon feeding reels 111 spaced apart along a second direction. Each ribbon feeding unit 110 also includes a first feed roller 112 for collecting the ribbons 10 transported by the multiple ribbon feeding reels 111. The photovoltaic module film-to-wire composite equipment also includes a second feed roller 500, which is located downstream of the first feed roller 112 along the transport direction of the ribbons 10 and is used to collect the ribbons 10 transported by the multiple first feed rollers 112. It is understood that the photovoltaic module film-to-wire composite equipment usually has multiple ribbons 10. In this embodiment, the ribbon feeding device 100 is divided into multiple ribbon feeding units 110 along the first direction, and each ribbon feeding unit 110 includes multiple ribbon feeding reels 111 spaced apart along the second direction. In actual operation, multiple ribbons 10 can be fed out simultaneously to meet the needs of the solar cells. Multiple welding strips 10 can be gathered together by the first feed roller 112 and the second feed roller 500 for easy output.

[0043] refer to Figure 1 and Figure 4 As shown, the photovoltaic module film-to-wire lamination equipment also includes a ribbon shaping device 600. Along the transport direction of the ribbon 10, the ribbon shaping device 600 is located between the ribbon feeding device 100 and the adhesive film bonding device 200. The ribbon shaping device 600 has two shaping wheels, which abut against opposite sides of the ribbon 10 to shape it. It is understood that the added ribbon shaping device 600 can shape the ribbon 10 to meet the film bonding requirements of ribbons 10 with different shapes. For example, a purely triangular ribbon 10 can be intermittently shaped into a flat shape to adapt to the back welding requirements of solar cells; a circular ribbon 10 can be shaped into a flat shape in the middle to adapt to the requirements of negative-pitch solar cell stringing. The added ribbon shaping device 600 enables the photovoltaic module film-to-wire lamination equipment of this embodiment to be compatible with ribbons 10 of various shapes, expanding the applicability of the photovoltaic module film-to-wire lamination equipment.

[0044] refer to Figure 4As shown, the two shaping wheels are a fixed shaping wheel 610 and a movable shaping wheel 620. The fixed shaping wheel 610 is fixedly mounted on the shaping bracket 630 of the ribbon shaping device 600, and the movable shaping wheel 620 is movably mounted on the shaping bracket 630. The movable shaping wheel 620 can move towards or away from the fixed shaping wheel 610 under the drive of the shaping drive component 640. It is understood that the shaping drive component 640 can be selected from structures such as cylinders or servo motors according to actual needs, and can meet the shaping needs of different ribbons 10 by controlling the different positions of the movable shaping wheel 620. Of course, the specific structure of the ribbon shaping device 600 can also be selected based on existing ribbon shaping structures and is not limited to those described above. It should be noted that the ribbon shaping device 600 should also include corresponding detection modules and control modules to detect the shaping results. The specific structure and type of the detection module and control module can be selected from existing structures according to actual needs, and will not be elaborated here.

[0045] refer to Figure 1 and Figure 5 As shown, the photovoltaic module film-to-wire composite equipment also includes a film-to-wire winding buffer device 700. Along the transport direction of the welding ribbon 10, the film-to-wire winding buffer device 700 is located between the film-to-wire traction device 300 and the film-to-wire winding device 400. The film-to-wire winding buffer device 700 includes two first guide rollers 710 and a first buffer roller 720 located between the two first guide rollers 710. The distance between the first buffer roller 720 and the first guide rollers 710 is adjustable. It can be understood that before work begins, the welding ribbon 10 is led out from the welding ribbon feeding device 100, passes through the film-to-wire traction device 300, the welding ribbon shaping device 600, and the film-to-wire winding buffer device 700, and finally connects to the film-to-wire winding device 400. The added film winding buffer device 700 can buffer the welding ribbon 10 with adhesive film 20 attached during film winding device 400 roll changing in actual operation. This facilitates roll changing without stopping the machine and also allows adjustment of the tension on the welding ribbon 10 by adjusting the position of the first buffer wheel 720, ensuring stable winding of the welding ribbon 10 on the film winding device 400. Optionally, the first buffer wheel 720 is mounted on a slider, and the film winding buffer device 700 has a slide rail that cooperates with the slider. By adjusting the position of the slider on the slide rail, the distance between the first buffer wheel 720 and the first feed wheel 710 can be adjusted. Further optionally, the slider can be fixed to the slide rail by a limiting pin or other means to prevent the first buffer wheel 720 from shaking or even misaligning during normal feed of the welding ribbon 10.

[0046] It should be noted that the film winding buffer device 700 should also include corresponding detection modules and control modules to detect the status of the film on the film winding buffer device 700. The specific structure and type of the detection module and control module can be selected from existing structures according to actual needs, and need not be elaborated here.

[0047] refer to Figure 1 As shown, the photovoltaic module film-line lamination equipment also includes a film-line detection device 800, located between the adhesive film bonding device 200 and the film-line traction device 300 along the transport direction of the welding strip 10. It is understood that the film-line detection device 800 can detect the bonding quality of the adhesive film 20, and can promptly alert the user when defects such as misalignment or omissions occur, facilitating the rejection of defective products. In this embodiment, the film-line detection device 800 can be a visual inspection device or an infrared detection device; the type, detection method, and control logic of the film-line detection device 800 can be selected according to actual needs.

[0048] refer to Figure 1 and Figure 6 As shown, the adhesive film laminating device 200 includes an adhesive film unwinding mechanism 210, an adhesive film cutting mechanism 220, an adhesive film temporary storage mechanism 230, and an adhesive film output mechanism 240. The adhesive film unwinding mechanism 210 has an adhesive film roll and is used to output the adhesive film 20. Along the transport direction of the adhesive film 20, the adhesive film cutting mechanism 220 is located downstream of the adhesive film unwinding mechanism 210 and is used to divide the adhesive film 20 into multiple pieces. Along the transport direction of the adhesive film 20, the adhesive film temporary storage mechanism 230 is located downstream of the adhesive film cutting mechanism 220 and is used to receive the divided pieces of adhesive film 20. Along the transport direction of the adhesive film 20, one end of the adhesive film output mechanism 240 is connected to the adhesive film temporary storage mechanism 230 to sequentially receive multiple pieces of adhesive film 20, and the other end abuts against the welding ribbon 10. (Reference) Figure 7As shown, the adhesive film output mechanisms 240 of the two adhesive film bonding devices 200 respectively abut against both sides of the welding ribbon 10. When the welding ribbon 10 passes through the adhesive film output mechanism 240, the adhesive film 20 on the adhesive film output mechanism 240 can be transferred and bonded to the welding ribbon 10. It is understood that the adhesive film 20 is provided by the adhesive film unwinding mechanism 210. The adhesive film 20 enters the adhesive film cutting mechanism 220 through the adhesive film unwinding mechanism 210. The adhesive film cutting mechanism 220 can cut the complete adhesive film 20 into multiple pieces of adhesive film 20. After the multiple single pieces of adhesive film 20 are cut, they are output to the adhesive film temporary storage mechanism 230. Finally, under the action of the adhesive film output mechanism 240, they are transported to the position corresponding to the welding ribbon 10. Since the adhesive film output mechanisms 240 of the two adhesive film bonding devices 200 respectively abut against both sides of the welding ribbon 10, when the welding ribbon 10 passes through the two adhesive film output mechanisms 240, the single pieces of adhesive film 20 can be transferred from the adhesive film output mechanism 240 to the front and back of the welding ribbon 10 in sequence, thereby completing the bonding of the adhesive film 20 and the welding ribbon 10. During the bonding process, there is no need for a separate hot-pressing device as in existing technologies. The transfer of the adhesive film 20 is achieved by using the pressure of two adhesive film output mechanisms 240 on the welding ribbon 10, which helps to reduce energy consumption and lower the operating cost of photovoltaic module film-wire composite equipment. It should be noted that the specific structure of the adhesive film cutting mechanism 220 is existing technology, and no specific limitations are imposed on the adhesive film cutting mechanism 220 here.

[0049] refer to Figure 6 As shown, the adhesive film temporary storage mechanism 230 includes a conveyor belt mechanism, and the adhesive film bonding device 200 includes a vacuum adsorption conveyor belt mechanism. Along the transport direction of the adhesive film 20, the conveyor belt mechanism and the vacuum adsorption conveyor belt mechanism partially overlap. It can be understood that when a single piece of adhesive film 20 moves to the vacuum adsorption conveyor belt mechanism under the transport of the conveyor belt mechanism, the vacuum adsorption conveyor belt mechanism can adsorb the single piece of adhesive film 20, completing the transfer of the single piece of adhesive film 20, which is very convenient. Of course, in other embodiments of this utility model, a transfer robot can also be set between the adhesive film temporary storage mechanism 230 and the adhesive film bonding device 200 to complete the transfer of the single piece of adhesive film 20, and is not limited to the structural form of the vacuum adsorption conveyor belt mechanism in this embodiment.

[0050] refer to Figure 6As shown, the film laminating device 200 also includes a film buffer unwinding mechanism 250, located between the film unwinding mechanism 210 and the film cutting mechanism 220 along the transport direction of the film 20. The film buffer unwinding mechanism 250 includes two second guide rollers 251 and a second buffer roller 252 positioned between the two guide rollers 251. The distance between the second buffer roller 252 and the second guide rollers 251 is adjustable. It is understood that the film buffer unwinding mechanism 250 can buffer the film 20, which facilitates uninterrupted roll changing and allows adjustment of the tension on the film 20 by adjusting the position of the second buffer roller 252, ensuring that the film 20 can be stably wound on the film winding device 400. Optionally, the second buffer wheel 252 is mounted on the slider, and the film winding buffer device 700 has a slide rail that cooperates with the slider. By adjusting the position of the slider on the slide rail, the distance between the second buffer wheel 252 and the second guide wheel 251 can be adjusted. Further optionally, the slider can be fixed to the slide rail by means of a limiting pin, etc., to prevent the second buffer wheel 252 from shaking or even misaligning during the normal winding of the film 20. It should be noted that the film buffer unwinding mechanism 250 should also include corresponding detection and control modules to detect the shaping structure. The specific structure and type of the detection and control modules can be selected from existing structures according to actual needs, and will not be elaborated here.

[0051] refer to Figure 5 As shown, the adhesive film bonding device 200 also includes an adhesive film correction device 260, located between the adhesive film buffer unwinding mechanism 250 and the adhesive film cutting mechanism 220 along the transport direction of the adhesive film 20. The adhesive film correction device 260 includes two movable correction wheels 261. It is understood that setting the adhesive film correction device 260 between the adhesive film buffer unwinding mechanism 250 and the adhesive film cutting mechanism 220 can correct the deviation of the adhesive film 20, ensuring cutting accuracy and thus ensuring the bonding quality of the adhesive film 20. It should be further noted that the adhesive film correction device 260 should also include corresponding detection modules and control modules to detect the correction results. The specific structure and type of the detection module and control module can be selected from existing structures according to actual needs, and will not be elaborated here.

[0052] The advantages of the photovoltaic module film-line composite equipment in this embodiment are as follows:

[0053] First: The welding strip 10 is unwound in a passive unwinding mode to ensure that the welding strip 10 always remains taut and to avoid bending of the welding strip 10 during the film-line lamination process.

[0054] Second: Add a welding strip shaping device 600 to adapt to different battery string production needs, such as: the pure triangular welding strip 10 is intermittently shaped into a flat shape to meet the welding requirements on the back of the battery cell; the round welding strip 10 is shaped into a flat shape in the middle to meet the requirements of negative pitch battery cell stringing.

[0055] Third: The front adhesive film 20 and the back adhesive film 20 are laminated at the same station, which reduces the equipment flow line length and film line conveying length, thereby increasing the stability of equipment operation, reducing the risk of film line detachment after lamination, and the equipment has good compatibility and can produce battery strings with different numbers of pieces.

[0056] Fourth: The added film buffer unwinding mechanism 250 can not only achieve roll changing without stopping the machine, which is conducive to improving manufacturing efficiency, but also adjust the tension of the film 20 by adjusting the position of the film buffer unwinding mechanism 250, so as to ensure that the film 20 can be stably wound on the film winding device 400.

[0057] Fifth: The film winding buffer device 700 can not only change the roll without stopping the machine, which is beneficial to improving manufacturing efficiency, but also adjust the tension of the welding ribbon 10 by adjusting the position of the film winding buffer device 700, so as to ensure that the welding ribbon 10 can be stably wound on the film winding device 400.

[0058] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A photovoltaic module film-wire composite equipment, characterized in that, include: A welding strip feeding device (100) capable of transporting multiple strands of welding strip (10); Two adhesive film bonding devices (200) are located downstream of the welding strip feeding device (100) along the transport direction of the welding strip (10). The two adhesive film bonding devices (200) are symmetrically arranged on both sides of the welding strip (10) and are used to bond adhesive films (20) to both sides of the welding strip (10) to form film lines. A film traction device (300) is located downstream of the adhesive film bonding device (200) along the transport direction of the welding strip (10) and is used to traction the welding strip (10). A film winding device (400) is located downstream of the film traction device (300) along the transport direction of the welding strip (10) and is used to wind up the welding strip (10).

2. The photovoltaic module film-line composite equipment according to claim 1, characterized in that, The welding strip feeding device (100) includes a plurality of welding strip feeding units (110) spaced apart along a first direction. Each welding strip feeding unit (110) includes a plurality of welding strip feeding reels (111) spaced apart along a second direction. Each welding strip feeding unit (110) also includes a first converging wheel (112) for collecting the welding strips (10) transported by the plurality of welding strip feeding reels (111). The photovoltaic module film-line composite equipment also includes a second conduit wheel (500), which is located downstream of the first conduit wheel (112) along the transport direction of the welding strip (10) and is used to collect the welding strip (10) transported by multiple first conduit wheels (112).

3. The photovoltaic module film-line composite equipment according to claim 1, characterized in that, It also includes a strip shaping device (600), which is located between the strip feeding device (100) and the adhesive film bonding device (200) along the transport direction of the strip (10). The strip shaping device (600) has two shaping wheels, which abut against opposite sides of the strip (10) to shape the strip (10).

4. The photovoltaic module film-line composite equipment according to claim 3, characterized in that, The two shaping wheels are a fixed shaping wheel (610) and a movable shaping wheel (620). The fixed shaping wheel (610) is fixedly mounted on the shaping bracket (630) of the welding strip shaping device (600). The movable shaping wheel (620) is movably mounted on the shaping bracket (630), and the movable shaping wheel (620) can move towards or away from the fixed shaping wheel (610) under the drive of the shaping drive (640).

5. The photovoltaic module film-line composite equipment according to claim 1, characterized in that, It also includes a film winding buffer device (700), which is located between the film traction device (300) and the film winding device (400) along the transport direction of the welding strip (10). The film winding buffer device (700) includes two first guide rollers (710) and a first buffer roller (720) located between the two first guide rollers (710). The distance between the first buffer roller (720) and the first guide rollers (710) is adjustable.

6. The photovoltaic module film-line composite equipment according to claim 1, characterized in that, It also includes a film line detection device (800), which is located between the adhesive film bonding device (200) and the film line traction device (300) along the transport direction of the welding strip (10).

7. The photovoltaic module film-line composite equipment according to any one of claims 1-6, characterized in that, The adhesive film bonding device (200) includes: A film unwinding mechanism (210) is provided with a film roll and is used to output the film (20); The film cutting mechanism (220) is located downstream of the film unwinding mechanism (210) along the transport direction of the film (20) and is used to cut the film (20) into multiple pieces. The adhesive film storage mechanism (230) is located downstream of the adhesive film cutting mechanism (220) along the transport direction of the adhesive film (20) and is used to receive multiple pieces of the cut adhesive film (20). The adhesive film output mechanism (240) is positioned along the transport direction of the adhesive film (20). One end of the adhesive film output mechanism (240) is connected to the adhesive film temporary storage mechanism (230) to sequentially receive multiple pieces of the adhesive film (20), and the other end abuts against the solder ribbon (10). The adhesive film output mechanism (240) of the two adhesive film bonding devices (200) respectively abuts against both sides of the welding ribbon (10). When the welding ribbon (10) passes through the adhesive film output mechanism (240), the adhesive film (20) on the adhesive film output mechanism (240) can be transferred and bonded to the welding ribbon (10).

8. The photovoltaic module film-line composite equipment according to claim 7, characterized in that, The adhesive film temporary storage mechanism (230) includes a conveyor belt mechanism, and the adhesive film bonding device (200) includes a vacuum adsorption conveyor belt mechanism. Along the transport direction of the adhesive film (20), the conveyor belt mechanism and the vacuum adsorption conveyor belt mechanism partially overlap.

9. The photovoltaic module film-line composite equipment according to claim 7, characterized in that, The adhesive film bonding device (200) further includes an adhesive film buffer unwinding mechanism (250), which is located between the adhesive film unwinding mechanism (210) and the adhesive film cutting mechanism (220) along the transport direction of the adhesive film (20); wherein: the adhesive film buffer unwinding mechanism (250) includes two second guide rollers (251) and a second buffer roller (252) disposed between the two second guide rollers (251), and the distance between the second buffer roller (252) and the second guide roller (251) is adjustable.

10. The photovoltaic module film-line composite equipment according to claim 9, characterized in that, The adhesive film bonding device (200) further includes an adhesive film correction device (260), which is located between the adhesive film buffer unwinding mechanism (250) and the adhesive film cutting mechanism (220) along the transport direction of the adhesive film (20); the adhesive film correction device (260) includes two movable correction wheels (261).

Images