Laying system for producing photovoltaic carrier film

Abstract

The utility model discloses a laying system for producing a photovoltaic carrier film, which comprises a solder strip release roller, and a solder strip is arranged on the solder strip release roller and is released along with the rotation of the solder strip release roller; the bearing film release roller is provided with a photovoltaic bearing film, the photovoltaic bearing film is released along with the rotation of the bearing film release roller, and the solder strip release roller and the bearing film release roller are arranged at the same level; the pressing rollers comprise the first pressing roller and the second pressing roller, the first pressing roller and the second pressing roller are oppositely arranged and used for pressing the welding strip to the photovoltaic bearing film, and the pressing rollers are arranged at the rear stage of the welding strip releasing roller and the rear stage of the bearing film releasing roller; and the winding roller is connected with a driving motor, the driving motor drives the winding roller to rotate so as to provide power for the welding strip releasing roller and / or the bearing film releasing roller, and the winding roller is arranged at the rear stage of the pressing roller. By means of the process, it can be ensured that the distance between the welding strips is not changed in the transportation and welding process, the use of a binding agent can be reduced or omitted, the production cost is reduced, meanwhile, the situations of unsoldering and solder skips caused by non-uniform coating of the binding agent can be avoided, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates generally to a laying system for producing a photovoltaic carrying film. BACKGROUND

[0002] A photovoltaic cell is a device that converts solar energy into electrical energy. In order to achieve the effect of conduction, it is usually necessary to set metal electrodes for conduction on the front and / or back of the cell. These metal electrodes can generally be divided into busbars and fingers. The busbars mainly serve to collect the current of the fingers, and the fingers are used to collect photo-generated carriers.

[0003] The busbar has a certain width, which is usually arranged on the front of the cell, and its width will affect the effective area of the cell receiving light energy. Therefore, the 0BB (0-busbar) technology is proposed. The 0BB cell cancels the busbar electrode of the cell and replaces it with a plurality of thinner ribbons, which can be directly interconnected with the fingers to collect the current of the fingers. The use of 0BB technology can make the shading area of the front of the cell smaller and the current transmission distance shorter, thereby reducing power loss and improving power generation efficiency.

[0004] As for the preparation process of the 0BB cell, there are generally three ways to weld the ribbons, including SmartWire, dispensing, and welding dispensing. Among them, the dispensing and welding dispensing processes need to be operated on the ribbons respectively, and the process is complex and the yield is high. In the SmartWire process, the ribbons are first arranged on the photovoltaic carrying film, and then the photovoltaic carrying film is attached to the surface of the cell. Using this process, the welding efficiency of the ribbons can be greatly improved, and the yield of the product can be ensured.

[0005] However, in the SmartWire process, the ribbons usually need to be uniformly arranged on the surface of the photovoltaic carrying film first. In order to improve the connection strength between the two, an adhesive needs to be applied on the surface of the photovoltaic carrying film to prevent the ribbons from falling off the surface of the photovoltaic carrying film during transportation or changing the distance between the ribbons to cause uneven distribution.

[0006] This traditional photovoltaic carrying film for SmartWire, due to the introduction of the adhesive, on the one hand, increases the overall cost, and on the other hand, due to the coating thickness and uniformity of the adhesive, higher requirements are also put forward, otherwise it will result in excessive embedding of the ribbons and virtual welding, affecting the yield of the product.

[0007] In view of the above technical problems, the scheme of the present application is proposed. CONTENT OF THE INVENTION

[0008] In one embodiment, the utility model discloses a laying system for producing photovoltaic bearing film, including the welding band release roll, be provided with the welding band on the welding band release roll, and the welding band is released along with the rotation of welding band release roll, the bearing film release roll is provided with photovoltaic bearing film on the bearing film release roll, and the photovoltaic bearing film is released along with the rotation of bearing film release roll, and the welding band release roll is arranged with bearing film release roll same level, the pressure roller, the pressure roller includes first pressure roller and second pressure roller, and first, second pressure roller are oppositely arranged for pressing the welding band to the photovoltaic bearing film, and the pressure roller is arranged in the rear stage of welding band release roll and bearing film release roll, the winding roller, the winding roller is connected with drive motor, and drive motor drives the rotation of winding roller to provide power to welding band release roll and / or bearing film release roll, and the winding roller is arranged in the rear stage of pressure roller.

[0009] Further, the laying system further comprises a guide system, the guide system is arranged in the rear stage of the welding band release roll and arranged in the front stage of the pressure roller, and is used for guiding the welding band released by the welding band release roll.

[0010] Further, the guide system comprises a guide, the guide is provided with a through hole or a guide groove, and the welding band passes through the through hole or the guide groove.

[0011] Further, the guide system comprises a guide roller for guiding the release of the welding band, the height of the welding band release roller is higher than that of the bearing film release roller, and the height of the guide roller is higher than that of the welding band release roller.

[0012] Further, the laying system further comprises an angle adjusting mechanism, the angle adjusting mechanism is installed to the rotating shaft of one or more of the guide roller, the welding band release roller and the bearing film release roller, and is used for changing the angle of the rotating shaft of one or more of the guide roller, the welding band release roller and the bearing film release roller.

[0013] Further, the angle adjusting mechanism is installed to the rotating shaft of the welding band release roller, and the adjustment angle range of the angle adjusting mechanism is 0-10°.

[0014] Further, the angle adjusting mechanism is installed to the rotating shaft of the bearing film release roller, and the adjustment angle range of the angle adjusting mechanism is 0-5°.

[0015] Further, the laying system further comprises an optical detection system, the optical detection system comprises a first camera, the first camera is arranged in the rear stage of the welding band release roller and the bearing film release roller and arranged in the front stage of the pressure roller, and the shooting angle of the first camera is perpendicular to the photovoltaic bearing film.

[0016] Further, the laying system further comprises an optical detection system, the optical detection system comprises a second camera, the second camera is arranged in the front stage of the winding roller and arranged in the rear stage of the pressure roller, and the shooting angle of the second camera is perpendicular to the photovoltaic bearing film.

[0017] Further, the laying system further comprises an optical detection system comprising a first and / or a second camera, the shooting angle of the first and / or the second camera being perpendicular to the photovoltaic carrier film; the optical detection system is connected with the angle adjusting mechanism, and is configured to send a detection result to the angle adjusting mechanism, and the angle adjusting mechanism adjusts the angle according to the detection result.

[0018] The summary of the application does not include an exhaustive list of all aspects of the application. It is contemplated that the application includes all systems and methods that can be practiced with all suitable combinations of the various aspects summarized above, and as disclosed in the detailed description below and the associated drawings that were filed with the patent application and that are particularly pointed out in the claims filed with the patent application. Such combinations have particular advantages that are not specifically recited in the summary of the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Embodiments are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings in which like references indicate similar elements. It should be noted that references made in this disclosure to embodiments "including" or "comprising" something generally mean that something is included or forms part of the subject embodiment.

[0020] Figure 1 A cross-sectional schematic view of a photovoltaic carrier film of a first type of embodiment of the application is shown;

[0021] Figure 2 A cross-sectional schematic view of a photovoltaic carrier film of a second type of embodiment of the application is shown;

[0022] Figure 3 A cross-sectional schematic view of a photovoltaic carrier film of a third type of embodiment of the application is shown;

[0023] Figure 4 A cross-sectional schematic view of a photovoltaic carrier film of a fourth type of embodiment of the application is shown;

[0024] Figure 5 A cross-sectional schematic view of a photovoltaic carrier film of a fifth type of embodiment of the application is shown;

[0025] Figure 6 A cross-sectional schematic view of a photovoltaic carrier film of a sixth type of embodiment of the application is shown;

[0026] Figure 7 A cross-sectional schematic view of a photovoltaic carrier film of a seventh type of embodiment of the application is shown;

[0027] Figure 8 A cross-sectional schematic view of a photovoltaic carrier film of an eighth type of embodiment of the application is shown;

[0028] Figure 9 An embodiment schematic view of a system for producing a photovoltaic carrier film of the application is shown;

[0029] Figure 10 An embodiment of the angle adjusting mechanism of the utility model is shown. DETAILED DESCRIPTION

[0030] In this section, several embodiments of the utility model will be explained with reference to the drawings. Whenever a component's shape, relative position, and other aspects described in the embodiments are not explicitly limited, the scope of the utility model is not limited only to the components shown. The components shown are for illustrative purposes only. In addition, although many details are set forth, it is understood that some embodiments of the utility model can be practiced without many of the details. In other instances, well-known structures and techniques have not been shown in detail so as not to obscure the understanding of this description.

[0031] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element's or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative terms used herein interpreted accordingly.

[0032] As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0033] The terms "or" and "and / or" as used herein are to be interpreted as inclusive or meaning any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C." An exception to this definition will occur only when two elements are inherently mutually exclusive from each other.

[0034] The connection as referred to herein includes various connection modes such as direct connection and indirect connection, and does not require physical contact between the connected parts. For example, various specific connection modes such as snap connection, screw connection, connection without fixing device, welding, riveting, and integral molding are included. In the case of component cooperation, various cooperation relationships such as clearance fit, transition fit, interference fit, or variable clearance are included.

[0035] The photovoltaic carrying film comprises a substrate layer and a carrying layer arranged above the substrate layer, and the materials of the substrate layer and the carrying layer are both selected from polymer materials.

[0036] As an optional embodiment, the material of the substrate layer is selected from one or both of EVA (ethylene-vinyl acetate copolymer) and POE (ethylene-octene copolymer). Optionally, the substrate layer has one layer, and the material thereof is selected from EVA. Alternatively, the substrate layer has one layer, and the material thereof is selected from POE.

[0037] For the above two materials, EVA has polarity, and the electrons thereof can migrate under voltage conditions. The photovoltaic module using the EVA photovoltaic carrying film will have a PID effect (potential-induced degradation) during power generation, and thus the power generation of the photovoltaic module will be significantly reduced. The POE material can partially solve the above problem, but the bonding performance of the POE material is weaker than that of the EVA, and the cost of the POE material is relatively high.

[0038] As an embodiment, the substrate layer of the utility model has a two-layer structure, comprising a first layer and a second layer. The first layer is adjacent to the carrying layer, and the second layer is away from the carrying layer. The material of the first layer is selected from POE, and the material of the second layer is selected from EVA. Since the first layer is closer to the battery tab, the use of POE material can reduce the PID effect, improve the power generation efficiency of the photovoltaic cell, and prolong the service life. The use of EVA material in the second layer can improve the bonding performance of the photovoltaic carrying film and reduce the cost.

[0039] The carrying layer is arranged above the substrate layer, and the material thereof is selected from PO (polyolefin), TPU (polyurethane), TPEE (polyester elastomer), etc. Specifically, the melt index of the material of the carrying layer is 0.1-50 g / 10 min, and optionally, the melt index is 1-15 g / 10 min. The Shore hardness of the carrying layer material is 10-80 D, and optionally, the Shore hardness is 25-70 D. Such materials have low fluidity and certain supportability, and the use of such materials can better achieve the function of carrying the solder strip. At the same time, such materials have certain adhesion, which can improve the connection firmness between the carrying layer and the solder strip.

[0040] As an embodiment, the carrying layer is provided with fixing portions, which are grooves, and a plurality of grooves are provided for accommodating the solder strips. The plurality of grooves are parallel to each other, so as to ensure that there is no interference between the grooves and the solder strips after the solder strips are accommodated into the grooves. The solder strips are transported in the grooves and are attached to the surface of the battery pole piece together with the adhesive film, and then the solder strips are welded to the surface of the battery pole piece. Through such a process, it can be ensured that the spacing between the solder strips does not change during transportation and welding, and the use of adhesive can be reduced or omitted, the production cost is reduced, and the product quality is improved.

[0041] As an optional embodiment, as shown in Figure 1 the cross section of the groove is in the shape of a circular arc. In terms of the cross-sectional shape of the groove, the distance from the uppermost end to the bottom end of the groove is defined as the depth of the groove. In this embodiment, the depth h1 of the groove is less than the diameter D1 of the circular arc and greater than the radius D1 / 2 of the circular arc. It should be noted that the "diameter of the circular arc" in this specification refers to the diameter of the whole circle corresponding to the circular arc. With such a configuration, the cross section of the groove is in the shape of "narrow on the top and wide inside". At this time, when the solder strip is arranged in the groove, the solder strip can be buckled into the groove in a buckling manner, that is, the uppermost end of the groove can exert a clamping force on the solder strip to further stably accommodate the solder strip. At this time, the upper surface of the solder strip is still higher than the carrying surface, and the groove can make the solder strip exposed while limiting the solder strip, so that the solder strip can be smoothly welded to the surface of the battery pole piece.

[0042] As another optional embodiment, as shown in Figure 2 the cross section of the groove is in the shape of a circular arc. In this embodiment, the depth h2 of the groove is less than or equal to the radius D2 / 2 of the circular arc. With such a configuration, the cross section of the groove is in the shape of "wide on the top and narrow on the bottom". Since there is no interference at the upper end of the groove, the solder strip can be arranged in the groove more easily. At this time, the upper surface of the solder strip is exposed from the groove. The groove can make the solder strip connected to the surface of the electrode smoothly while limiting the solder strip. At the same time, since the depth of the groove is less than or equal to the radius of the circular arc, the solder strip can be conveniently arranged in the groove without exerting additional force to "buckle" the solder strip into the groove. Compared with the previous embodiment, since the exposed part of the solder strip is more in this embodiment, the welding between the solder strip and the battery pole piece can be more reliable.

[0043] As another optional embodiment, as shown in Figure 3As shown in the figure, the cross section of the groove is U-shaped, and the equivalent diameter D3 of the bottom circular arc of the U-shaped groove is greater than the upper opening width w of the U-shaped groove. The "equivalent diameter of the bottom circular arc" referred to in the present disclosure refers to the diameter corresponding to the circle when the bottom circular arc is taken as a part of the circle. The U-shaped groove of the present embodiment is convenient to process. The equivalent diameter of the bottom circular arc of the U-shaped groove is greater than the upper opening width of the U-shaped groove, that is, the bottom of the U-shaped groove of the present embodiment is relatively flat. With such a setting, when the solder strip is matched with the groove, the solder strip can be as close as possible to the bottom of the groove, reducing the air gap between the solder strip and the carrier layer, and improving the bonding effect of the photovoltaic carrier film. At the same time, with such a setting, when the solder strip with a rectangular cross section is used, the groove can also achieve good support and fixation.

[0044] As another optional embodiment, as shown in Figure 4 the cross section of the groove is part of a flat ellipse, and the major axis of the ellipse is substantially parallel to the surface of the carrier layer. The depth of the groove can be greater than the minor axis of the ellipse, or less than or equal to the minor axis of the ellipse. With such a setting, the space at the bottom of the groove can be increased, so that the groove can fully accommodate the overflow glue generated during the processing of the cell sheet, and the soldering reliability of the solder strip can be improved.

[0045] As another optional embodiment, as shown in Figures 5 to 8 a protrusion is arranged on the surface of the carrier layer, and the protrusion has a certain height, and the shape of the protrusion can be a cone, a hemisphere or other shapes (the figure only takes a hemisphere or part of a sphere as an example), and the present disclosure does not limit the shape of the protrusion. With such a setting, the solder strip can be clamped between the protrusions, and the gap between the protrusions can fix the solder strip.

[0046] As shown in Figure 5 is one distribution of the protrusions, the protrusions are arranged in multiple rows in the transverse direction on the surface of the carrier layer, and there is a first spacing d1 between two adjacent protrusions, and there is a second spacing d2 between the rows of protrusions. With such a setting, the protrusions on the surface of the photovoltaic carrier film can accommodate solder strips in different directions, such as solder strips in two perpendicular directions or solder strips at an angle to each other. The first spacing d1 and the second spacing d2 of the protrusions on the surface of the photovoltaic carrier film can be customized according to the specific values of the spacing between the solder strips in different directions on the photovoltaic cell sheet. As shown in Figure 5 in the present embodiment, for most of the protrusions, the spacing between the adjacent two protrusions closer to the root is smaller than the spacing at the upper part. With such a setting, the solder strip can be conveniently arranged between the protrusions without applying additional clamping force.

[0047] As shown in Figure 6 is another setting of the protrusions, compared with Figure 5 the setting of the protrusions, inFigure 6 In this embodiment, the distance between the roots of two adjacent protrusions is greater than the distance between the waists above the roots of the protrusions. In other words, along the height direction of the protrusions from bottom to top, the distance between the outer surfaces of two adjacent protrusions first decreases and then increases. With this arrangement, a snap-fit-like positional relationship can be formed between two adjacent protrusions, which can apply a holding force to the solder strip set between the two adjacent protrusions, prevent the solder strip from shifting, and thus improve the yield of solder strip welding.

[0048] like Figure 7 The diagram shows another distribution of the protrusions. The protrusions are arranged in multiple rows on the surface of the supporting layer, with each row parallel to the others and at a certain angle to the edge of the supporting membrane. For the same row, the distance between two adjacent protrusions along the width of the supporting membrane is d1', and the distance along the length of the supporting membrane is d2'. As a variation of this distribution, such as... Figure 8 As shown, the protrusions are arranged in multiple rows on the surface of the bearing layer. The rows are not parallel, and the rows can be connected end to end or have a certain distance between them.

[0049] By setting up various types of welding strip fixing parts, the welding strips can be firmly laid on the surface of the carrier layer, reducing the use of adhesives and ensuring that the welding strips do not interfere with each other. At the same time, by first laying the welding strips on the carrier film and then laying the welding strips with the carrier film on them onto the battery electrode sheets, processing steps are reduced, processing efficiency is improved, and processing quality is ensured.

[0050] As a laying system for applying welding ribbon to the surface of a carrier layer, the laying system includes a roller. The wound welding ribbon, photovoltaic carrier film, etc., are placed on the roller and rotate with it. During rotation, the welding ribbon and photovoltaic carrier film are released. Alternatively, the welding ribbon can be placed on rollers (not shown in the figure), with the rollers spaced apart. The number and spacing of the rollers are determined based on the number and spacing of the battery electrodes and the required welding ribbon. Alternatively, the rollers are evenly distributed; another alternative is an uneven distribution.

[0051] The photovoltaic carrier film is wound onto a roller in a spool manner and released by the rotation of the spool. The roller or spool that winds the welding strip rotates together with the roller that winds the photovoltaic carrier film, and the linear velocity of the released welding strip is basically consistent with the linear velocity of the released carrier film.

[0052] like Figure 9The shaft roller system 100 for laying the solder ribbon on the surface of the carrier film is shown, including a solder ribbon release roller 101, a carrier film release roller 102, a pressing roller 103, and a winding roller 104. The solder ribbon 1011 is wound on the solder ribbon release roller 101, and is released by the rotation of the solder ribbon release roller 101. The carrier film 1021 is wound on the carrier film release roller 102, and is released by the rotation of the shaft roller. The solder ribbon release roller 101 and the carrier film release roller 102 rotate substantially synchronously, so that the solder ribbon 1011 is laid on the carrier film 1021. Further, the solder ribbon cooperates with the fixed part on the carrier film, so that the solder ribbon is laid in the fixed part on the carrier film. The carrier film with the solder ribbon is passed through the pressing roller 103, which makes the solder ribbon and the carrier film further adhere by pressing and optional heating. In the embodiment, according to the movement sequence of the solder ribbon and the carrier film, the solder ribbon release roller and the carrier film release roller are arranged in the front process of the pressing roller, and the solder ribbon release roller and the carrier film release roller release the solder ribbon and the carrier film respectively, and there is no sequence relationship between the two. In this case, the solder ribbon release roller and the carrier film release roller are located in the "front stage" of the pressing roller, and the solder ribbon release roller and the carrier film release roller belong to the "same stage".

[0053] The winding roller 104 is arranged in the rear stage of the pressing roller 103, and is used for winding the carrier film with the solder ribbon, and can optionally provide a rotating driving force for one or more of the solder ribbon release roller, the carrier film release roller, the pressing roller, and the winding roller. As another optional embodiment, each shaft roller can apply a rotating driving force or apply a driving force through an additional driving roller, which is not limited in the present application.

[0054] In order to more accurately control the distance between the solder ribbons, a guide system can be arranged between the solder ribbon release roller 101 (or the roller) and the photovoltaic carrier film 1021. After the solder ribbon 1011 is released by the shaft roller or the roller, it is guided to the surface of the carrier layer of the photovoltaic carrier film by the guide system. The guide system is arranged in the rear stage of the solder ribbon release roller and the carrier film release roller, and in the front stage of the pressing roller.

[0055] As an optional embodiment, the guide system includes a guide piece. As an optional embodiment, the guide piece is provided with a perforation or a guide groove (not shown) for the solder ribbon to pass through. By adjusting the distance between the perforations or the guide grooves of the guide piece, the distance between the solder ribbons arranged on the photovoltaic carrier film can be controlled, and the control accuracy of the distance between the solder ribbons is improved.

[0056] As another optional embodiment, as shown in FIG. 4, the guide system includes a guide piece 401. The guide piece 401 is arranged in the rear stage of the solder ribbon release roller and the carrier film release roller, and in the front stage of the pressing roller. Figure 9As shown, the guiding system comprises a guiding roller 105. The guiding roller 105 is used to guide the solder tape 1011 released by the solder tape release roller 101 and the carrier film 1021 released by the carrier film release roller 102, and to lay the solder tape on the surface of the carrier film. The horizontal height of the guiding roller 105 is higher than that of the solder tape release roller. With such an arrangement, the solder tape passing through the guiding roller has a downward component, which better enables the solder tape to be laid on the surface of the carrier film. As an optional embodiment, the carrier film 1021 is closer to the surface of the guiding roller 105 than the solder tape 1011, i.e., as shown in FIG. 1B, the solder tape 1011 is laid above the carrier film 1021. Figure 9 As shown, the solder tape 1011 is laid above the carrier film 1021. As another optional embodiment, the solder tape is closer to the surface of the guiding roller than the carrier film (not shown), i.e., the solder tape 1011 is laid below the carrier film 1021.

[0057] Optionally, a groove is arranged on the surface of the guiding roller 105 as a guiding mechanism. The solder tape passes through the groove, which can simultaneously play a guiding and positioning role, and ensure that the spacing between the solder tapes meets the preset.

[0058] The laying system further comprises an angle adjustment mechanism (not shown), as shown in FIG. 1C. Figure 10 As shown, the angle adjustment mechanism is directly or indirectly connected to the rotation shaft of any one or more of the guiding roller, the solder tape release roller, and the carrier film release roller, so that the rotation shaft of the guiding roller, the rotation shaft of the solder tape release roller, and the rotation shaft of the carrier film release roller can be rotated per se, thereby changing the relative angle θ between the rotation shaft of the guiding roller and the rotation shaft of the solder tape release roller and / or the rotation shaft of the carrier film release roller and the initial position.

[0059] In the process of laying the solder tape on the surface of the photovoltaic carrier film, since the carrier film, the solder tape, etc. have a relatively large length, if the alignment angle between the solder tape and the carrier film or the fixed part on the carrier film is slightly offset, the solder tape may be misaligned with the carrier film or the fixed part on the carrier film during the long-distance laying process, resulting in the solder tape being out of the fixed part. In the case that the solder tape is deviated or out of the fixed part, the subsequent photovoltaic carrier film laying and soldering effect will be affected, and thus the yield of the photovoltaic cell will be affected. The angle adjustment mechanism can timely adjust and correct the relative angle between the solder tape and the carrier film. Through such fine adjustment, the quality of the solder tape laying can be ensured.

[0060] As an optional embodiment, the angle adjustment mechanism can be manually adjusted, or can be electronically adjusted by using a servo motor, a stepping motor, or other electronic driving mechanisms. The specific angle adjustment implementation of the present disclosure is not limited.

[0061] In the case of electronic adjustment, the guiding system can further comprise an optical detection system, which identifies the relative angle between the solder strip and the surface fixing part of the carrier film through image recognition or other means. When the solder strip deviates from the carrier film or the solder strip is out of the surface fixing part of the carrier film, the optical detection system sends a correction signal to the angle adjustment mechanism to adjust the relative angle between the solder strip and the carrier film in real time, thereby ensuring the processing precision.

[0062] As shown in Figure 9 the present embodiment, the optical detection system comprises a first camera 201 for photographing the surface of the carrier film on which the solder strip is arranged and obtaining the distance / angle between the solder strip and the edge of the carrier film, so as to determine whether the solder strip is deviated when laid on the carrier film. If it is found that the solder strip is deviated, the optical detection system sends a control signal to the controller of the shaft roller system to adjust the deflection angle of a specific shaft roller in the shaft roller system.

[0063] As an optional embodiment, the optical detection system further comprises a second camera 202 arranged behind the pressing roller 103 and before the winding roller 104, which is used to detect whether the solder strip on the photovoltaic carrier film after pressing is deviated, so as to ensure that the edge of the photovoltaic carrier film wound by the winding roller 104 is flat.

[0064] As an embodiment, the roller shaft of the solder strip release roller 101 is provided with an angle adjustment structure, and the adjustment range of the angle θ is 0-10°. When the optical detection mechanism determines that the solder strip is deviated from the carrier film, the deflection angle of the solder strip release roller 101 is adjusted. Since the solder strip release roller 101 is wound with a strip-shaped solder strip, the tension of the solder strip on the solder strip release roller 101 is small, and the solder strip release roller can be deflected by a relatively large angle, so that a large angle deviation can be corrected.

[0065] As another embodiment, the roller shaft of one or more of the carrier film release roller 102, the guiding roller 105 and the winding roller 104 is provided with an angle adjustment structure, and the adjustment range of the angle θ is 0-5°. When the optical detection mechanism determines that the solder strip is deviated from the carrier film, the angle of one or more of the carrier film release roller 102, the guiding roller 105 and the winding roller 104 is adjusted, so as to adjust the positional relationship between the carrier film and the solder strip, and make the end face of the product wound more flat. Since the carrier film release roller 102, the guiding roller 105 and the winding roller 104 are all in contact with the carrier film, and the tension of the carrier film on the carrier film release roller 102, the guiding roller 105 and the winding roller 104 is large, if the adjustment range of the angle θ exceeds the upper limit value, it may cause the product wound finally to have "explosion of muscle" or tearing, etc., affecting the product yield.

[0066] As another optional embodiment, the roll shaft of the solder strip release roller 101 is provided with an angle adjusting structure, and the roll shaft of one or more of the carrier film release roller 102, the guide roller 105 and the winding roller 104 is also provided with an angle adjusting structure.

[0067] The application is not limited to the specific structure and arrangement shown, as long as a similar technical solution is adopted and a similar effect can be achieved, it should be considered to belong to the protection scope of the application. The utility model is not limited to the specific structure and arrangement shown, as long as a similar technical solution is adopted and a similar effect can be achieved, it should be considered to belong to the protection scope of the utility model.

Claims

1. A laying system for producing photovoltaic carrier film, characterized in that: the laying system comprises: a solder strip release roller, on which a solder strip is arranged, the solder strip being released as the solder strip release roller rotates; a carrier film release roller, on which a photovoltaic carrier film is arranged, the photovoltaic carrier film being released as the carrier film release roller rotates, the solder strip release roller and the carrier film release roller are arranged at the same level; a pressing roller, which comprises a first pressing roller and a second pressing roller, the first and second pressing rollers are oppositely arranged, and are used to press the solder strip onto the photovoltaic carrier film, the pressing roller is arranged at the rear level of the solder strip release roller and the carrier film release roller; a winding roller, which is connected with a driving motor, the driving motor drives the winding roller to rotate, so as to provide power for the solder strip release roller and / or the carrier film release roller, the winding roller is arranged at the rear level of the pressing roller. 2.The laying system according to claim 1, characterized in that: the laying system further comprises: a guiding system, which is arranged at the rear level of the solder strip release roller and at the front level of the pressing roller, and is used to guide the solder strip released by the solder strip release roller. 3.The laying system according to claim 2, characterized in that: the guiding system comprises a guide, on which a through hole or a guide groove is arranged, and the solder strip passes through the through hole or the guide groove. 4.The laying system according to claim 2, characterized in that: the guiding system comprises a guide roller, which is used to guide the release of the solder strip; the height of the solder strip release roller is higher than that of the carrier film release roller, and the height of the guide roller is higher than that of the solder strip release roller. 5.The laying system according to claim 4, characterized in that: the laying system further comprises: an angle adjusting mechanism, which is installed to the rotating shaft of one or more of the guide roller, the solder strip release roller and the carrier film release roller; the angle adjusting mechanism is used to change the angle of the rotating shaft of one or more of the guide roller, the solder strip release roller and the carrier film release roller. 6.The laying system according to claim 5, characterized in that: the angle adjusting mechanism is installed to the rotating shaft of the solder strip release roller, and the adjusting angle range of the angle adjusting mechanism is 0-10°. 7.The laying system according to claim 5, characterized in that: the angle adjusting mechanism is installed to the rotating shaft of the carrier film release roller, and the adjusting angle range of the angle adjusting mechanism is 0-5°. 8.The laying system according to claim 1, characterized in that: the laying system further comprises: an optical detection system, which comprises a first camera, the first camera is arranged at the rear level of the solder strip release roller and the carrier film release roller, and at the front level of the pressing roller; the shooting angle of the first camera is perpendicular to the photovoltaic carrier film. 9.The laying system according to claim 1 or 8, characterized in that: the laying system further comprises: The optical detection system comprises a second camera, which is arranged in front of the winding roller and behind the pressing roller; The shooting angle of the second camera is perpendicular to the photovoltaic carrier film.

10. The laying system according to claim 5, characterized in that: The laying system further comprises: The optical detection system comprises a first and / or a second camera, and the shooting angle of the first and / or the second camera is perpendicular to the photovoltaic carrier film; The optical detection system is connected with the angle adjustment mechanism, and is configured to send a detection result to the angle adjustment mechanism, and the angle adjustment mechanism adjusts the angle according to the detection result.

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