Cutting method of photovoltaic module

Abstract

The invention relates to a photovoltaic module cutting method which is used for cutting an adhesive layer of a photovoltaic module through cutting equipment, the cutting equipment is provided with a cutting line, and the method comprises the steps that the plate face of the photovoltaic module is vertically arranged and fixed to a supporting table of the cutting equipment; obtaining the position and thickness of an adhesive layer and the tension of a cutting line; and controlling the cutting line to cut the adhesive layer of the photovoltaic module, and adjusting the distance of the cutting line in the thickness direction according to the position and the thickness of the adhesive layer and the tension of the cutting line. According to the technical scheme, the photovoltaic module can be vertically fixed on the supporting table of the cutting equipment, and the cutting equipment can position the cutting line at a proper position before the cutting line cuts the adhesive layer according to the position and thickness of the adhesive layer of the photovoltaic module, so that the cutting line can adapt to photovoltaic modules with different thicknesses; and the height of the cutting line can be adjusted in real time by obtaining the tension on the cutting line, and the situation that the cutting line makes contact with glass or a battery piece or a back plate in the cutting process, and the integrity of the hierarchical structure is damaged is avoided.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of photovoltaic modules, in particular to a cutting method of a photovoltaic module. BACKGROUND

[0002] Photovoltaic modules are used to convert solar energy directly into electrical energy, and are mainly applied in the field of photovoltaic. Photovoltaic modules generally have two types of single-glass photovoltaic modules and double-glass photovoltaic modules. The single-glass photovoltaic module includes a frame, a glass, a module sheet, a backboard and a glue layer. The module sheet is arranged between the glass and the backboard through the glue layer, and finally the frame is arranged on the outside. The structure of the double-glass photovoltaic module includes two layers of glass, a cell sheet and a glue layer. The cell sheet is bonded between the two layers of glass through the glue layer, and finally the frame is arranged on the outside.

[0003] The production of photovoltaic modules requires a large amount of energy and raw materials, and recycling photovoltaic modules can reduce energy waste and consumption. When recycling photovoltaic modules, the frame needs to be disassembled for recycling, and then the glass on the photovoltaic module is recycled through a glass recycling device. In related technologies, a glass recycling device can only recycle the glass on a photovoltaic module with one thickness. When recycling the glass on photovoltaic modules with multiple thicknesses, multiple glass recycling devices need to be prepared, which occupies space and increases the cost of recycling the glass on the photovoltaic module. At the same time, after cutting each level of the photovoltaic module, the photovoltaic module is usually placed horizontally, and multiple different levels are stacked in the height direction. The device cannot conveniently classify and recycle each level, causing certain inconvenience. SUMMARY

[0004] The purpose of the present disclosure is to provide a cutting method of a photovoltaic module to at least partially solve the problems in the related art.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a cutting method of a photovoltaic module for cutting the glue layer of the photovoltaic module by a cutting device, the cutting device has a cutting line, and the method comprises: vertically placing the plate surface of the photovoltaic module and fixing it on the support surface of the support table of the cutting device; obtaining the position and thickness of the glue layer and the tension of the cutting line; and controlling the cutting line to cut the glue layer of the photovoltaic module, and adjusting the position of the cutting line in the thickness direction according to the position and thickness of the glue layer and the tension of the cutting line.

[0006] Optionally, the cutting line includes a first segment and a second segment spaced apart in the thickness direction, and the step of adjusting the position of the cutting line in the thickness direction includes: adjusting the distance between the first segment and the second segment in the thickness direction so that at least one of the first segment and the second segment corresponds to the adhesive layer of the photovoltaic module.

[0007] Optionally, the cutting equipment includes a cutting device comprising: a first pulley and a second pulley rotatably disposed on the top of the support platform; and a third pulley rotatably disposed on the bottom of the support platform for reversing the cutting line; and the cutting line... The cutting line is sequentially wound around the first pulley, the third pulley, and the second pulley. The portion of the cutting line between the first and third pulleys is the first segment, and the portion between the second and third pulleys is the second segment. The third pulley is horizontally deflectable in the thickness direction, so that the first and second segments are staggered in the thickness direction. The step of adjusting the distance between the first segment and the second segment in the thickness direction includes: adjusting the tilt angle of the third pulley in the thickness direction, adjusting the distance between the first pulley and the third pulley in the thickness direction, and / or adjusting the distance between the second pulley and the third pulley in the thickness direction.

[0008] Optionally, the steps of adjusting the tilt angle of the third pulley in the thickness direction and adjusting the distance between the first pulley and the third pulley in the thickness direction and / or adjusting the distance between the second pulley and the third pulley in the thickness direction include: obtaining a first target tilt angle of the third pulley in the thickness direction, a first target displacement of the first pulley, and a second target displacement of the third pulley based on the tension of the first segment; obtaining a second target tilt angle of the third pulley in the thickness direction, a third target displacement of the second pulley, and a fourth target displacement of the third pulley based on the tension of the second segment; and determining the actual tilt angle of the third pulley in the thickness direction based on the first target tilt angle and the second target tilt angle, and determining the actual distance between the first pulley, the second pulley, and the third pulley in the thickness direction based on the first target displacement, the second target displacement, the third target displacement, and the fourth target displacement.

[0009] Optionally, the step of obtaining the first target tilt angle of the third pulley in the thickness direction, the first target displacement of the first pulley, and the second target displacement of the third pulley based on the tension of the first segment includes: when the tension of the first segment is greater than a first preset value and less than a second preset value, increasing the tilt angle of the third pulley in the thickness direction and increasing the distance between the first pulley and the third pulley in the thickness direction; and when the tension of the first segment is greater than the second preset value, decreasing the tilt angle of the third pulley in the thickness direction and decreasing the distance between the first pulley and the third pulley in the thickness direction. The step of obtaining the second target tilt angle, the third target displacement, and the fourth target displacement of the third pulley in the thickness direction based on the tension of the second segment includes: when the tension on the second segment is greater than the first preset value and less than the second preset value, increasing the tilt angle of the third pulley in the thickness direction and decreasing the distance between the second and third pulleys in the thickness direction; and when the tension on the second segment is greater than the second preset value, decreasing the tilt angle of the third pulley in the thickness direction and increasing the distance between the second and third pulleys in the thickness direction. Wherein, the second preset value is greater than the first preset value.

[0010] Optionally, the step of obtaining the tension of the cutting line includes: detecting the tension on the first segment using a first tension sensor disposed on the first segment, and detecting the tension on the second segment using a second tension sensor disposed on the second segment.

[0011] Optionally, the cutting device includes: a pressure plate, disposed opposite to the support surface, for pressing the photovoltaic module against the support surface, wherein a roller is disposed on the support platform, the roller is embedded in the support platform and at least partially protrudes from the surface of the support platform facing the photovoltaic module, the roller is a drive roller for driving the photovoltaic module to move when rotating.

[0012] Preferably, the cutting device further includes a support portion disposed at the bottom of the support platform. The support portion is perpendicular to the support surface and is used to support the photovoltaic module from the bottom. The rotation speed of the roller is the same as the transmission speed of the support portion. The step of fixing the photovoltaic module to the support platform includes: placing the photovoltaic module vertically on the support portion, and controlling the pressure plate to press against the photovoltaic module against the support surface. The supporting part is a conveyor belt, which is used to move the photovoltaic module along the moving direction of the photovoltaic module.

[0013] Optionally, the cutting equipment further includes a guide rail and a positioning device, the positioning device being used to drive the pressure plate closer to or away from the support table, the positioning device being movably mounted on the guide rail.

[0014] Preferably, the guide rail includes a first guide rail placed horizontally in the horizontal direction and a second guide rail placed vertically in the vertical direction, one end of the first guide rail is slidably connected to the second guide rail, and the pressure plate is disposed on the first guide rail; The step of controlling the pressure plate to press against the photovoltaic module to the support surface includes: moving the pressure plate along the guide rail to correspond to the center of the photovoltaic module; and controlling the positioning device to drive the pressure plate closer to the support platform to press the photovoltaic module against the support surface.

[0015] Optionally, the step of obtaining the position and thickness of the adhesive layer includes: detecting the thickness of the adhesive layer and the position of the adhesive layer in the photovoltaic module using an ultrasonic probe. The ultrasonic probe is disposed on the pressure plate, and the surface of the ultrasonic probe facing the photovoltaic module is flush with the surface of the pressure plate facing the photovoltaic module, so that the ultrasonic probe can contact the pressure plate.

[0016] Optionally, the step of controlling the cutting wire to cut the adhesive layer of the photovoltaic module includes: controlling the moving speed of the cutting wire relative to the photovoltaic module to 0.5m-2m / min, controlling the linear speed of the cutting wire to 20-30m / s, and controlling the tension on the cutting wire to 30-60N.

[0017] Through the above technical solution, photovoltaic modules can be vertically fixed on the support platform of the cutting equipment. The cutting equipment can position the cutting line appropriately before cutting the adhesive layer of the photovoltaic module, based on the position and thickness of the adhesive layer, so that it aligns with the adhesive layer. This adaptable to different types and thicknesses of photovoltaic modules. Simultaneously, by detecting the tension of the cutting line during the cutting process, the distance of the cutting line in the thickness direction can be adjusted in real time, preventing contact between the cutting line and the glass, cells, or backsheet of the photovoltaic module, ensuring the structural integrity of each layer to be separated. Furthermore, there are no movement restrictions between the layers of the cut photovoltaic module, allowing operators to directly separate the layers to easily separate the glass and backsheet from the cells. This convenient operation effectively protects the structural integrity of each layer of the photovoltaic module during separation.

[0018] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 2 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 3 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 4 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 5 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 6 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 7 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 8 This is a flowchart of a photovoltaic module cutting method provided by an exemplary embodiment of this disclosure; Figure 9 This is a schematic diagram of the structure of the cutting device provided in an exemplary embodiment of this disclosure; Figure 10 yes Figure 9 Enlarged view of section A; Figure 11 This is a schematic diagram of the tilt angle of the cutting device provided in an exemplary embodiment of this disclosure; Figure 12 This is a schematic diagram of the structure of the third pulley provided in an exemplary embodiment of this disclosure, wherein the tilt angle of the third pulley in the horizontal direction is the first angle; Figure 13 This is a schematic diagram of the structure of the third pulley provided in an exemplary embodiment of this disclosure, where the tilt angle of the third pulley in the horizontal direction is the second angle.

[0020] Explanation of reference numerals in the attached figures 100-Support platform, 101-Roller, 200-Pressure plate, 201-First guide rail, 202-Positioning device, 203-Second guide rail, 300-Cutting device, 301-First pulley, 302-Second pulley, 303-Third pulley, 304-Annular groove, 305-First section, 306-Second section, 307-First winding roller, 308-Second winding roller, 309-First drive motor, 310-Third telescopic rod, 400-Adjustment part, 401-First tension sensor, 402-Second tension sensor, 403-Ultrasonic probe, 404-First telescopic rod, 405-Second telescopic rod, 406-Second drive motor, 407-Third drive motor, 500-Supporting part, 600-Bracket. Detailed Implementation

[0021] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0022] In this disclosure, unless otherwise stated, directional terms generally refer to the orientation of the relevant components in their actual use. "Inner" and "outer" can refer to the inner and outer contours of the corresponding component or its location within or outside its environment, depending on the specific context. "Top" and "bottom" can refer to the top and bottom of the relevant structural component in its actual use. The thickness direction in this disclosure is defined based on the thickness of the photovoltaic module. It is understood that when the photovoltaic module is pressed against the support surface of the support platform, the thickness direction of the photovoltaic module is consistent with that of the support platform; in this case, the direction perpendicular to the support surface can also be expressed as the thickness direction. Furthermore, when the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements, and the structures shown in the drawings are merely schematic and do not limit the technical content of this disclosure. The terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance.

[0023] Photovoltaic modules are used to directly convert solar energy into electrical energy and are widely used in the photovoltaic field. Photovoltaic modules typically come in two types: single-glass and double-glass. Taking a horizontally placed single-glass photovoltaic module as an example, from bottom to top, it usually includes a backsheet, an encapsulating layer, solar cells, another encapsulating layer, and glass. A frame surrounds the module on the outside for fixation and protection. Similarly, taking a horizontally placed double-glass photovoltaic module as an example, from bottom to top, it usually includes glass, an encapsulating layer, solar cells, another encapsulating layer, and glass. A frame surrounds the module on the outside for fixation and protection.

[0024] Recycling photovoltaic (PV) modules can reduce energy waste and consumption when they reach the end of their lifespan or become damaged. When recycling PV modules, the frame can be disassembled first for recycling. For example, with a double-glass PV module, after the frame is disassembled and recycled, the two layers of glass and the solar cells need to be recycled. With a single-glass PV module, after the frame is disassembled and recycled, one layer of glass, one backsheet, and the solar cells need to be recycled. However, when recycling glass from PV modules of varying thicknesses, multiple glass recycling machines are needed, which takes up space and increases the cost of recycling the glass from PV modules.

[0025] like Figures 1 to 8 As shown, this disclosure provides a method for cutting photovoltaic modules, applied to a cutting device. The cutting device may include a support platform 100 and a cutting device 300. The cutting device 300 has a cutting line for cutting the adhesive layer of the photovoltaic module to be processed. In the cutting method provided in this disclosure, in step S101, the photovoltaic module's panel can be vertically placed and fixed to the support surface of the support platform 100 of the cutting device. Because photovoltaic modules have a large panel area and a certain weight, compared to horizontal cutting, the layers of the cut photovoltaic module are stacked vertically, making it difficult to separate the layers and causing inconvenience for sorting and recycling. This disclosure, however, places the photovoltaic module's panel vertically, allowing no movement restrictions between layers after cutting and separation. Operators can directly separate the layers of the photovoltaic module to achieve simple separation of the glass and backsheet from the solar cells, making the operation convenient and effectively protecting the integrity of each layer of the photovoltaic module during the separation process.

[0026] In step S102, the position and thickness of the adhesive layer and the tension of the cutting line are obtained.

[0027] In step S103, the cutting wire is controlled to cut the adhesive layer of the photovoltaic module, and the position of the cutting wire in the thickness direction is adjusted according to the position and thickness of the adhesive layer and the tension of the cutting wire.

[0028] In the above embodiments, generally speaking, both single-glass and double-glass photovoltaic modules have two adhesive layers. When obtaining the adhesive layer thickness, the position and thickness of each adhesive layer can be obtained separately. When the thickness of the photovoltaic module changes, the position of the two adhesive layers also changes. By determining the position and thickness of the adhesive layers, the height of the cutting line can be adjusted to ensure that the cutting line can adapt to photovoltaic modules of different thicknesses. Simultaneously, during the process of cutting the adhesive layer of the photovoltaic module to be processed using the cutting line, if abnormal changes occur in the tension on the cutting line, it indicates that the cutting line is in contact with the glass, solar cells, or backsheet. By obtaining the tension on the cutting line, the height of the cutting line can be adjusted and controlled in real time according to the changes in tension, preventing the cutting line from contacting the glass, solar cells, or backsheet, improving the recycling efficiency of the photovoltaic module, and ensuring the quality of recycling at each level.

[0029] Through the above technical solution, photovoltaic modules can be vertically fixed on the support platform 100 of the cutting equipment. The cutting equipment can position the cutting line appropriately before cutting the adhesive layer of the photovoltaic module, based on the position and thickness of the adhesive layer, so that it aligns with the adhesive layer. This adaptable to different types and thicknesses of photovoltaic modules. Simultaneously, by detecting the tension of the cutting line during the cutting process, the position of the cutting line in the thickness direction can be adjusted in real time, preventing contact between the cutting line and the glass, cells, or backsheet of the photovoltaic module, ensuring the structural integrity of each layer to be separated. Furthermore, there are no movement restrictions between the layers of the cut photovoltaic module, allowing operators to directly separate the layers to achieve simple separation of the glass and backsheet from the cells. This convenient operation effectively protects the structural integrity of each layer of the photovoltaic module during separation.

[0030] For example, such as Figure 2 and Figure 9 As shown, the cutting line may include a first segment 305 and a second segment 306 spaced apart in the thickness direction, wherein step S103 may include: Step 201: Adjust the distance between the first segment 305 and the second segment 306 in the thickness direction so that at least one of the first segment 305 and the second segment 306 corresponds to the adhesive layer of the photovoltaic module. As mentioned above, both single-glass and double-glass photovoltaic modules have two adhesive layers. When the cutting line includes the first segment 305 and the second segment 306 spaced apart in the thickness direction, when the cutting device 300 moves relative to the photovoltaic module, the first segment 305 and the second segment 306 can cut the two adhesive layers simultaneously. Thus, the photovoltaic module only needs to be cut once to cut the two adhesive layers simultaneously, separating the glass from the backsheet and the glass from the solar cells. This allows for the direct recycling of the two pieces of glass and the solar cells, or the recycling of the backsheet, glass, and solar cells.

[0031] In some embodiments, such as Figure 3 andFigures 9 to 13 As shown, the cutting device 300 may include a first pulley 301, a second pulley 302, a third pulley 303, and a cutting wire. The first pulley 301 and the second pulley 302 are rotatably mounted on the top of the support platform 100, and the third pulley 303 is rotatably mounted on the bottom of the support platform 100, used to change the direction of the cutting wire. The cutting wire may be sequentially wound around the first pulley 301, the third pulley 303, and the second pulley 302. The portion of the cutting wire between the first pulley 301 and the third pulley 303 is the first segment 305, and the portion of the cutting wire between the second pulley 302 and the third pulley 303 is the second segment 306. The third pulley 303 may be horizontally deflected in the thickness direction, so that the first segment 305 and the second segment 306 are staggered in the thickness direction. Step 201 may include: Step 301: Adjust the tilt angle of the third pulley 303 in the thickness direction, adjust the distance between the first pulley 301 and the third pulley 303 in the thickness direction, and / or adjust the distance between the second pulley 302 and the third pulley 303 in the thickness direction. In this embodiment, when the thickness of the photovoltaic module changes, the distance between the two adhesive layers in the height direction also changes. As described above, adjusting the tilt angle of the third pulley 303 in the thickness direction can adjust the distance between the first segment 305 and the second segment 306 in the thickness direction, so that the first segment 305 and the second segment 306 can adapt to photovoltaic modules of different thicknesses. Simultaneously adjusting the distance between the first pulley 301 and the third pulley 303 in the thickness direction can adjust the thickness position of the first segment 305, ensuring that the first segment 305 can be horizontal after adjusting the tilt angle of the third pulley 303 in the horizontal direction. Adjusting the height of the second pulley 302 and the third pulley 303 can adjust the height of the second segment 306, ensuring that the second segment 306 can be horizontal after adjusting the tilt angle of the third pulley 303 in the horizontal direction.

[0032] The third pulley 303 has an annular groove 304 on its rim for winding the cutting line, preventing the cutting line from detaching from the third pulley 303. When the third pulley 303 deflects in the thickness direction, it creates a height difference between the first segment 305 and the second segment 306 in the thickness direction, achieving a staggered effect. Increasing the tilt angle of the third pulley 303 in the thickness direction increases the distance between the first segment 305 and the second segment 306 in the thickness direction; similarly, decreasing the tilt angle of the third pulley 303 in the horizontal direction decreases the distance between the first segment 305 and the second segment 306 in the thickness direction. When the thickness of the photovoltaic module changes, the distance between the two adhesive layers in the height direction also changes. As described above, adjusting the tilt angle of the third pulley 303 in the thickness direction adjusts the distance between the first segment 305 and the second segment 306 in the thickness direction, allowing the first segment 305 and the second segment 306 to correspond to the two adhesive layers of photovoltaic modules with different thicknesses. Meanwhile, the first pulley 301 and the second pulley 302 can be respectively set on both sides of the photovoltaic module along with the third pulley 303, so that the first section 305 and the second section 306 can span across the photovoltaic module, allowing the adhesive layer to be completely cut.

[0033] For example, such as Figure 4 and Figures 9 to 13 As shown, step S301 may include: Step S401: Based on the tension of the first segment 305, obtain the first target tilt angle of the third pulley 303 in the thickness direction, the first target displacement of the first pulley 301, and the second target displacement of the third pulley 303.

[0034] In step S402, the second target tilt angle of the third pulley 303 in the thickness direction, the third target displacement of the second pulley 302, and the fourth target displacement of the third pulley 303 are obtained based on the tension of the second segment 306.

[0035] Step S403: Determine the actual tilt angle of the third pulley 303 in the thickness direction based on the first target tilt angle and the second target tilt angle. Determine the actual positions of the first pulley 301, the second pulley 302 and the third pulley 303 in the thickness direction based on the first target displacement, the second target displacement, the third target displacement and the fourth target displacement.

[0036] In the above embodiment, based on the tension on the first segment 305, it can be determined whether the first segment 305 is within the adhesive layer during the cutting process, thus determining the position of the first segment 305. Based on the tension on the second segment 306, it can be determined whether the second segment 306 is within the adhesive layer during the cutting process, thus determining the position of the second segment 306. Meanwhile, the positional changes of the first segment 305 and the second segment 306 can be achieved by adjusting the tilt angle of the third pulley 303 in the thickness direction, as well as adjusting the thickness direction positions of the first pulley 301, the second pulley 302, and the third pulley 303. For example, after the photovoltaic module is fixed, when it is necessary to perform layer-by-layer cutting and separation of a thicker photovoltaic module, the distance between the two adhesive layers will be greater due to the thickness of the photovoltaic module. At this time, the tilt angle of the third pulley 303 in the thickness direction can be increased to increase the distance between the first segment 305 and the second segment 306 in the thickness direction. Then, the distance between the first pulley 301, the second pulley 302, and the third pulley 303 and their extensions from the support surface can be adjusted so that the first segment 305 and the second segment 306 can correspond to the positions of the adhesive layers respectively. After the positions of the first segment 305 and the second segment 306 are determined, the adhesive layer cutting can begin, and the distance between the first segment 305 and the second segment 306 in the thickness direction can be adjusted in real time during the cutting process. Therefore, when the positions of the first segment 305 and the second segment 306 need to be adjusted to the target positions, the actual tilt angle of the third pulley 303 in the thickness direction can be determined by judging the first target tilt angle and the second target tilt angle corresponding to the target positions. Based on the first target displacement, the second target displacement, the third target displacement and the fourth target displacement, the actual positions of the first pulley 301, the second pulley 302 and the third pulley 303 in the thickness direction can be appropriately adjusted.

[0037] Taking the cutting of a double-glass photovoltaic module as an example, where the distance from the first segment 305 to the support surface is greater than that of the second segment 306, the following steps are taken: When cutting the adhesive layer, the first segment 305 will cut the adhesive layer located on the side of the photovoltaic module furthest from the support surface. If the distance from the first segment 305 to the support surface is too large, it will come into contact with the glass; if the distance is too small, it will come into contact with the solar cell. Similarly, the second segment 306 will be located on the adhesive layer on the side of the photovoltaic module closest to the support surface. If the distance from the second segment 306 to the support surface is too large, it will come into contact with the solar cell; if the distance is too small, it will come into contact with the glass. The hardness of the glass and backsheet is often greater than that of the solar cell, and the hardness of the solar cell is often greater than the thickness of the adhesive layer. Therefore, whether the cutting line accidentally comes into contact with the glass or the solar cell, it will increase the tension on the cutting line. When the cutting wire accidentally comes into contact with the battery cell, the resistance it experiences is less than when the cutting wire accidentally comes into contact with the glass. The tension fed back to the cutting wire can be used to determine whether the first segment 305 and the second segment 306 are in contact with the glass or the battery cell. This allows for real-time adjustment and control of the cutting wire's position in the thickness direction, thus preventing the aforementioned accidental contact from affecting the cutting process or causing structural damage at any level.

[0038] In some embodiments, such as Figure 5 and Figures 9 to 13 As shown, step S401 may include: Step S501: When the tension of the first segment 305 is greater than the first preset value and less than the second preset value, increase the tilt angle of the third pulley 303 in the thickness direction and increase the distance between the first pulley 301 and the third pulley 303 in the thickness direction.

[0039] Step S502: When the tension of the first segment 305 is greater than the second preset value, reduce the tilt angle of the third pulley 303 in the thickness direction and reduce the distance between the first pulley 301 and the third pulley 303 in the thickness direction.

[0040] And step S402 may include: Step S601: When the tension on the second segment 306 is greater than the first preset value and less than the second preset value, increase the tilt angle of the third pulley 303 in the thickness direction and decrease the distance between the second pulley 302 and the third pulley 303 in the thickness direction.

[0041] Step S602: When the tension on the second segment 306 is greater than the second preset value, the tilt angle of the third pulley 303 in the thickness direction is reduced, and the distance between the second pulley 302 and the third pulley 303 in the thickness direction is increased.

[0042] The first preset value here represents the minimum tension on the cutting line when the cutting line accidentally contacts the battery cell, and the second preset value represents the minimum tension on the cutting line when the cutting line contacts the glass or back plate. Since the hardness of the glass and back plate is greater than that of the battery cell, the second preset value is greater than the first preset value. In this embodiment, when the tension of the first segment 305 is greater than the first preset value but less than the second preset value, it indicates that the distance between the first segment 305 and the supporting surface is too small and it is in contact with the battery cell. At this time, it is necessary to increase the thickness displacement of the first segment 305. This can be achieved by increasing the tilt angle of the third pulley 303 in the thickness direction and increasing the distance between the first segment 305 and the second segment 306 in the thickness direction, so that the first segment 305 is further away from the battery cell. To ensure the verticality of the first segment 305, it is also necessary to increase the distance between the first pulley 301 and the supporting surface. At the same time, to avoid the impact of increasing the tilt angle of the third pulley 303 in the thickness direction on the thickness of the second segment 306, it is also necessary to increase the distance between the third pulley 303 and the supporting surface to ensure that the position of the second segment 306 in the thickness direction remains unchanged.

[0043] When the tension of the first segment 305 exceeds the second preset value, it indicates that the distance between the first segment 305 and the supporting surface is too large and it is in contact with the glass. In this case, it is necessary to reduce the thickness displacement of the first segment 305. This can be achieved by reducing the tilt angle of the third pulley 303 in the thickness direction and reducing the distance between the first segment 305 and the second segment 306 in the thickness direction, allowing the first segment 305 to move further away from the glass. To ensure the verticality of the first segment 305, it is also necessary to reduce the distance between the first pulley 301 and the supporting surface. Simultaneously, to avoid affecting the thickness position of the second segment 306 when reducing the tilt angle of the third pulley 303 in the thickness direction, it is also necessary to reduce the distance between the third pulley 303 and the supporting surface, ensuring that the position of the second segment 306 remains unchanged in the thickness direction.

[0044] Similarly, when the tension on the second segment 306 is greater than the first preset value but less than the second preset value, it indicates that the distance between the second segment 306 and the supporting surface is too large and it is in contact with the battery cell. In this case, the thickness displacement of the first segment 305 needs to be reduced. This can be achieved by increasing the tilt angle of the third pulley 303 in the thickness direction and increasing the distance between the first segment 305 and the second segment 306 in the thickness direction, allowing the second segment 306 to be further away from the battery cell. To ensure the verticality of the second segment 306, the distance between the second pulley 302 and the supporting surface also needs to be increased. Simultaneously, to avoid affecting the thickness position of the first segment 305 when increasing the tilt angle of the third pulley 303 in the thickness direction, the distance between the third pulley 303 and the supporting surface also needs to be increased to ensure that the position of the first segment 305 in the thickness direction remains unchanged.

[0045] When the tension on the second segment 306 exceeds the second preset value, it indicates that the distance between the extension of the second segment 306 and the supporting surface is too small and it is in contact with the glass or back panel. In this case, the distance between the extension of the second segment 306 and the supporting surface needs to be increased. This can be achieved by reducing the tilt angle of the third pulley 303 in the thickness direction and reducing the distance between the first segment 305 and the second segment 306 in the thickness direction, allowing the second segment 306 to be further away from the glass or back panel. To ensure the verticality of the second segment 306, the distance between the extension of the second pulley 302 and the supporting surface also needs to be increased. Simultaneously, to avoid affecting the thickness position of the first segment 305 when reducing the tilt angle of the third pulley 303 in the thickness direction, the distance between the extension of the third pulley 303 and the supporting surface also needs to be reduced to ensure that the position of the first segment 305 in the thickness direction remains unchanged.

[0046] It should be noted that the aforementioned increase or decrease in the tilt angle of the third pulley in the thickness direction is an adjustment process of the third pulley 303 based on the first target tilt angle and the second target tilt angle. The aforementioned increase or decrease in the thickness displacement of the first pulley 301, the second pulley 302, and the third pulley 303 is an adjustment process of the first pulley 301, the second pulley 302, and the third pulley 303 based on the target displacement.

[0047] When the tensions of the first segment 305 and the second segment 306 change simultaneously, the aforementioned adjustment methods can be combined. For example, if the tension of the first segment 305 is greater than the first preset value and the tension of the second segment 306 is greater than the second preset value, it indicates that the first segment 305 is in contact with the battery cell, while the second segment 306 is in contact with the glass. The overall position of the cutting line is too biased towards the support surface. When the tension of the first segment 305 is greater than the first preset value and the tension of the second segment 306 is greater than the second preset value, the distance of the third pulley 303 from the support surface needs to be increased. At this time, the maximum value of the second target displacement and the fourth target displacement can be used to adjust the thickness position of the third pulley 303, and the thickness distance between the first pulley 301 and the second pulley 302 can be further adjusted. At the same time, the difference between the required increase in the tilt angle of the third pulley 303 in the vertical direction and the required decrease in the tilt angle of the third pulley 303 in the horizontal direction can be calculated, and the tilt angle of the third pulley 303 in the horizontal direction can be adjusted by the difference between the first target tilt angle and the second target tilt angle.

[0048] For example, when the tension on the first segment 305 is greater than the first preset value and the tension on the second segment 306 is greater than the first preset value, it indicates that both the first segment 305 and the second segment 306 are in contact with the battery cell. The distance between the first segment 305 and the second segment 306 in the thickness direction is too small. When both the tension on the first segment 305 and the tension on the second segment 306 are greater than the first preset value, the tilt angle of the third pulley 303 in the thickness direction needs to be increased. In this case, the maximum value between the first target tilt angle and the second target tilt angle can be used to adjust the tilt angle of the third pulley 303 in the thickness direction. Simultaneously, the thickness position of the third pulley 303 can be adjusted by the difference between the second target displacement and the fourth target displacement. Based on the distance of the third pulley 303 from the support surface, the height distance of the first pulley 301 and the second pulley 302 from the support surface can be adjusted.

[0049] In this way, during the process of cutting the adhesive layer, the distance between the first segment 305 and the second segment 306 in the thickness direction can be adjusted in real time according to the tension. Even if the cutting line accidentally comes into contact with the battery cell, glass and back panel, the position of the cutting line can be adjusted in time to ensure that the cutting line is in the adhesive layer during the cutting process.

[0050] For example, refer to Figures 9 to 11 The adjustment assembly may include a first telescopic rod 404, a second telescopic rod 405, a third telescopic rod 310, and a first drive motor 309. The first telescopic rod 404 extends perpendicular to the support platform 100 and is connected to a first pulley 301, used to adjust the distance of the first pulley 301 relative to the support surface of the support platform 100 based on the tension detected by the first tension sensor 401. The second telescopic rod 405 extends perpendicular to the support platform 100 and is connected to a second pulley 302, used to adjust the distance of the second pulley 302 relative to the support surface of the support platform 100 based on the tension detected by the second tension sensor 402. Similarly, the third pulley 303 can be fitted onto the third telescopic rod 310. The third telescopic rod 310 can also be used to adjust the distance of the third pulley 303 from the support surface of the support platform 100. At the same time, the output shaft of the first drive motor 309 can be connected to the third telescopic rod 310. The first drive motor 309 can drive the third pulley 303 to deflect in the thickness direction through the third telescopic rod 310, so as to adjust the spacing of the first segment 305 and the second segment 306 of the cutting line in the thickness direction by deflecting the third pulley 303 in the thickness direction, thereby meeting the adaptability for cutting photovoltaic modules of different specifications.

[0051] In other embodiments, the first drive motor 309 can drive the third telescopic rod 310 to swing, thereby causing the third telescopic rod 310 to drive the third pulley 303 to deflect. Alternatively, the third pulley 303 and the third telescopic rod 310 can be rotatably connected. In this case, the first drive motor 309 can drive the third pulley 303 to rotate relative to the third telescopic rod 310, adjusting the deflection angle of the third pulley 303 in the thickness direction, thereby adjusting the distance between the first segment 305 and the second segment 306 in the thickness direction.

[0052] Generally, when cutting two adhesive layers in a photovoltaic module simultaneously, the tilt angle of the third pulley 303 in the thickness direction can be greater than 0.5 degrees and less than 5 degrees. If the tilt angle of the third pulley 303 in the thickness direction is too small, the distance between the first segment 305 and the second segment 306 in the thickness direction will be too small, causing the first segment 305 and the second segment 306 to accidentally contact the solar cell during adhesive layer cutting. If the tilt angle of the third pulley 303 in the thickness direction is too large, the distance between the first segment 305 and the second segment 306 in the thickness direction will be too large. Taking a double-glass photovoltaic module as an example, during adhesive layer cutting, the first segment 305 and the second segment 306 will accidentally contact the glass. The distance between the first segment 305 and the second segment 306 in the thickness direction can be determined according to the thickness of the solar cell and the thickness of the photovoltaic module. Generally, the distance between the first segment 305 and the second segment 306 in the thickness direction can be greater than 130 micrometers and less than 250 micrometers.

[0053] Since the first segment 305 and the second segment 306 are staggered in the thickness direction, this disclosure does not restrict the cutting order of the first segment 305 and the second segment 306. It is possible that the first segment 305 starts cutting the adhesive layer first and then the second segment 306 starts cutting the adhesive layer, or the second segment 306 cuts the adhesive layer first and then the first segment 305 cuts the adhesive layer.

[0054] It is important to note that the photovoltaic module used in the cutting equipment is not a complete photovoltaic module; the frame of the photovoltaic module has been disassembled. In some embodiments, the two ends of the cutting wire can be connected to each other, and the cutting wire can be directly fitted onto the first pulley 301, the second pulley 302, and the third pulley 303. When the first pulley 301 and the second pulley 302 rotate, the cutting wire can move along its own extension trajectory, ensuring the cutting effect of the adhesive layer. By adjusting the rotation speed of the first pulley 301 and the second pulley 302, the linear speed of the cutting wire can be adjusted; by adjusting the length of the cutting wire, the tension on the cutting wire can be adjusted.

[0055] In other embodiments, the cutting device 300 may include a first winding roller 307 and a second winding roller 308 disposed on the same side of the first pulley 301 and the second pulley 302, with the two ends of the cutting wire wound around the first winding roller 307 and the second winding roller 308, respectively. When the winding rollers rotate, the cutting wire can move along its own extension trajectory, ensuring the cutting effect of the cutting wire on the adhesive layer. Taking the first winding roller 307 as an example, when the first winding roller 307 releases the wire and the second winding roller 308 retracts the wire, or when the first winding roller 307 retracts the wire and the second winding roller 308 releases the wire, the cutting wire can move along its own extension trajectory. The linear speed of the cutting wire can also be adjusted by adjusting the rotation speed of the winding rollers. At the same time, by changing the rotation direction of the first winding roller 307 and the second winding roller 308, the winding rollers can perform the function of retracting or releasing the wire, making the length of the cutting wire adjustable to adjust the tension on the cutting wire and ensure that the cutting wire is always in a taut state.

[0056] In other embodiments, refer to Figures 9 to 11 The cutting device 300 may further include a second drive motor 406 and a third drive motor 407. The second drive motor 406 is connected to the first winding roller 307 and is used to drive the first winding roller 307 to rotate; the third drive motor 407 is connected to the second winding roller 308 and is used to drive the second winding roller 308 to rotate. In this way, the operator can control the rotation direction and rotation speed of the first winding roller 307 and the second winding roller 308 through the second drive motor 406 and the third drive motor 407, respectively.

[0057] In this disclosure, when the cutting line in the cutting device is provided with a first segment 305 and a second segment 306, two adhesive layers in the photovoltaic module can be cut simultaneously. In other embodiments, by changing the tilt angle of the third pulley 303 in the thickness direction, only the segment closer to the support surface of either the first segment 305 or the second segment 306 can be used to cut one adhesive layer. Taking a single-glass photovoltaic module where the distance from the first segment 305 to the support surface is greater than that of the second segment 306 as an example, if only the backsheet or glass in the single-glass photovoltaic module needs to be recycled, only one adhesive layer needs to be cut. By changing the tilt angle of the third pulley 303 in the thickness direction, the distance between the first segment 305 and the second segment 306 in the thickness direction can be adjusted, increasing the distance between the first segment 305 and the second segment 306. When the distance between the first segment 305 and the second segment 306 is large enough, the position of the second segment 306 corresponds to the adhesive layer to be cut, and thus the second segment 306 can be used to cut a single adhesive layer of the single-glass photovoltaic module. In this case, the first segment 305 can avoid the photovoltaic module. The tilt angle of the third pulley 303 in the thickness direction can be greater than 5 degrees and less than 90 degrees. If the tilt angle of the third pulley 303 in the thickness direction is too small, the distance between the first segment 305 and the second segment 306 in the thickness direction will be too small, causing the first segment 305 to be unable to avoid the photovoltaic module and to contact the single-glass photovoltaic module. If the tilt angle of the third pulley 303 in the thickness direction is too large, the first segment 305 or the second segment 306 may easily detach from the third pulley 303, affecting the use of the cutting wire device.

[0058] It should be noted that in this disclosure, the position of the photovoltaic module is fixed by the support platform 100 and the pressure plate 200. When a layer of adhesive is cut by one of the first section 305 or the second section 306, the other section needs to avoid the pressure plate 200. At this time, one of the first pulley 301 and the second pulley 302 and the third pulley 303 can be set on the same side of the support platform 100, and the other section can be set separately on the opposite side of the support platform 100. In this way, only one of the first section 305 or the second section 306 can be used to cut the photovoltaic module. During the movement of the pressure plate 200, the other section of the first section 305 or the second section 306 will not come into contact with the pressure plate 200, thus avoiding obstruction to the photovoltaic module cutting operation.

[0059] Besides the method mentioned above, which involves increasing the distance between the first segment 305 and the second segment 306 to allow the second segment 306 to cut a layer of adhesive, it is also possible to reduce the distance between the first segment 305 and the second segment 306 so that both segments can cut a layer of adhesive simultaneously. Figure 4 and Figure 5Using the direction of the drawing as a reference, the tilt angle of the third pulley 303 in the thickness direction can be reduced to 0 degrees, that is, the third pulley 303 is parallel to the movement direction of the photovoltaic module. At this time, the plane formed by the first segment 305 and the second segment 306 is also parallel to the movement direction of the photovoltaic module (that is, parallel to the support surface of the support platform 100). By adjusting the distance between the first pulley 301, the second pulley 302 and the third pulley 303 and the support surface, the first segment 305 and the second segment 306 can correspond to the position of the adhesive layer. In this way, the first segment 305 and the second segment 306 can pass through the same adhesive layer at the same time and cut the adhesive layer a second time, which can improve the cutting effect and ensure that the layers on both sides of the adhesive layer are completely separated.

[0060] For example, refer to Figure 7 and Figures 9 to 11 Step S102 may include: detecting the tension on the first segment 305 using a first tension sensor 401 mounted on the first segment 305, and detecting the tension on the second segment 306 using a second tension sensor 402 mounted on the second segment 306. The tension sensors can monitor the tension on the first segment 305 and the second segment 306 in real time, ensuring timely detection and correction of tension anomalies. Simultaneously, the tension sensors can be integrated with an automatic control system to achieve automatic tension adjustment, reducing the need for manual monitoring and lowering operational complexity and human error.

[0061] In some embodiments, such as Figures 9 to 11As shown, the cutting equipment in this disclosure may further include a pressure plate 200, an adjustment section 400, a support section 500, and a bracket 600. The pressure plate 200 may be disposed opposite to the support surface of the support platform 100. The bottom of the support platform 100 may have a support section 500 for supporting vertically placed photovoltaic modules. The photovoltaic modules may be placed vertically on the support section 500 and pressed against the support surface by the pressure plate 200. A bracket 600 may be provided on the back of the support platform 100 to securely fix the cutting equipment as a whole, preventing the equipment from shaking during the cutting operation. The support surface may be provided with rollers 101, which are embedded in the support platform 100 and at least partially protrude from the surface of the support platform 100 facing the photovoltaic module. Rollers 101 can be drive rollers, used to drive the photovoltaic module to move during rotation, supporting the movement of the photovoltaic module pressed against the support surface relative to the support platform 100, and allowing the photovoltaic module to contact the cutting device 300 during movement. The cutting line of the cutting device 300 can be adjusted to a suitable position by the adjustment unit 400 before cutting the adhesive layer of the photovoltaic module, thereby achieving the purpose of separating the various layers of the photovoltaic module. Simultaneously, the support part 500 can be a conveyor belt, which can transport the photovoltaic module along the direction of movement. When the support part 500 is a conveyor belt, it can also be used to drive the photovoltaic module to move. In this case, the rotation speed of rollers 101 can be the same as the transmission speed of the support part 500 to avoid deviation in the movement speed of the photovoltaic module's surface and bottom edge pressed against the support surface, which could cause relative sliding between the photovoltaic module and the support surface or support part 500, affecting the stability of the equipment during the cutting process.

[0062] Step S101 may include: Step S701: Place the photovoltaic module vertically on the support 500 and control the pressure plate 200 to press against the photovoltaic module to the support surface.

[0063] In other embodiments, refer to Figure 9 and Figure 11 The support part 500 can be two conveyor belts spaced apart, and the gap between the two conveyor belts can be used to avoid the adjustment part 400. The conveyor belt can be made of flexible material to flexibly support the bottom edge of the photovoltaic module, so as to avoid damage or hard friction with the bottom edge of the photovoltaic module, and at the same time avoid wear and tear on the photovoltaic module and the conveyor belt.

[0064] For example, refer to Figures 8 to 11The cutting equipment may also include a guide rail and a positioning device 202. The positioning device 202 can be used to drive the pressure plate 200 closer to or further away from the support table 100. The positioning device 202 is movably mounted on the guide rail. The guide rail may include a first guide rail 201 horizontally positioned and a second guide rail 203 vertically positioned. One end of the first guide rail 201 is slidably connected to the second guide rail 203. The pressure plate 200 may be mounted on the first guide rail 201. Step S701 may include: Step S801: Move the pressure plate 200 along the guide rail until it corresponds to the center of the photovoltaic module.

[0065] In step S802, the control positioning device 202 drives the pressure plate 200 to approach the support platform 100 to press the photovoltaic module against the support surface.

[0066] In the above embodiments, since photovoltaic modules have different types and specifications, they are held at different heights by the support part 500. The positioning device 202 can be moved horizontally on the first guide rail 201 to drive the photovoltaic module to move horizontally. The first guide rail 201 can be moved vertically on the second guide rail 203 to drive the positioning device 202 to a position opposite to the center of the photovoltaic module. When the positioning device 202 drives the pressure plate 200 to position the photovoltaic module on the support surface, it can ensure that the pressure plate 200 is positioned at the center of the photovoltaic module, so that the photovoltaic module as a whole can be stably fixed. This prevents the photovoltaic module from being unstable due to uneven force on the panel surface, and from deviating from or falling off the support surface when moving along the support surface.

[0067] For example, the moving speed of the cutting wire relative to the photovoltaic module can be controlled at 0.5m-2m / min, the linear speed of the cutting wire at 20-30m / s, and the tension on the cutting wire at 30-60N. If the moving speed of the cutting wire relative to the photovoltaic module is too slow, it will affect the cutting efficiency of the cutting device 300. Simultaneously, the slow moving speed will cause the adhesive layer to be heated for an extended period, melting and adhering to the cutting wire, reducing the cutting effect. If the moving speed of the cutting wire relative to the photovoltaic module is too fast, it will result in insufficient contact time between the cutting wire and the adhesive layer, causing uneven cut surfaces and affecting the cutting quality of the cutting device 300. Furthermore, an excessively fast moving speed will increase the vibration of the cutting wire, increasing the risk of contact between the cutting wire and the glass, solar cells, or backsheet. The effect of controlling the linear speed of the cutting wire is similar to that of controlling its moving speed. It should be noted that the linear speed of the cutting wire mentioned here refers to the speed at which the cutting wire moves along its own extension direction. When the cutting wire moves along its own extension direction, it will rub against the adhesive layer of the photovoltaic module, causing the adhesive layer to be cut. When the cutting wire speed is too slow, it will affect the cutting efficiency of the cutting device 300, and the adhesive layer will easily adhere to the cutting wire. When the cutting wire speed is too fast, it will affect the cutting effect and increase the vibration of the cutting wire. As for the tension on the cutting wire, if the tension is too low, it will increase the vibration of the cutting wire, increasing the risk of contact between the cutting wire and the glass, battery cell, or back panel. At the same time, too low tension will reduce the friction between the cutting wire and the adhesive layer, affecting the cutting effect of the cutting wire on the adhesive layer and reducing the cutting efficiency of the cutting device 300. If the tension on the cutting wire is too high, it will easily cause the cutting wire to break during the cutting of the adhesive layer. Excessive tension will also increase the friction between the cutting wire and the adhesive layer, making the cutting wire more prone to wear and reducing the service life of the cutting wire.

[0068] In some embodiments, refer to Figure 11Step S102 may include: detecting the thickness of the adhesive layer and its position within the photovoltaic module using an ultrasonic probe 403. The ultrasonic probe 403 may be mounted on the pressure plate 200, with the surface of the ultrasonic probe 403 facing the photovoltaic module flush with the surface of the pressure plate 200 facing the photovoltaic module, allowing the ultrasonic probe 403 to contact the pressure plate 200. When the surface of the ultrasonic probe 403 facing the photovoltaic module is flush with the surface of the pressure plate 200 facing the photovoltaic module, after the pressure plate 200 presses the photovoltaic module, the detection end of the ultrasonic probe 403 can directly contact the surface of the photovoltaic module, ensuring the accuracy of the adhesive layer thickness detection by the ultrasonic probe 403. The ultrasonic probe 403 can simultaneously detect the position and thickness of two adhesive layers and is not affected by interference from the glass, solar cells, or backsheet. When ultrasonic waves encounter an interface between two different media, such as from glass into an adhesive layer or from an adhesive layer into a solar cell, some sound waves are reflected back, while others penetrate to the next layer and continue propagating. The propagation speed of sound waves differs in different media. Based on the difference in the detected reflected wave data, the position and thickness of the two adhesive layers can be calculated. Besides the ultrasonic probe 403, thermal imaging or optical coherence tomography (OCT) can also be used to detect the thickness of the adhesive layer. For example, thermal imaging reveals subtle differences in temperature distribution between adhesive layers of different materials and thicknesses. By capturing these temperature differences with an infrared camera, the position and thickness of the adhesive layer can be determined. Optical coherence tomography (OCT) is a high-resolution optical imaging technique that can acquire cross-sectional images of the inside of photovoltaic modules. It uses the principle of light interference to measure the reflection of light at different depths, and therefore can also be used to provide the position and thickness of the adhesive layer.

[0069] In other embodiments, the cutting device 300 may include nozzles respectively disposed on both sides of the photovoltaic module. The nozzles are connected to a coolant and spray the coolant towards the cutting line, ensuring the temperature of the cutting line remains below 25°C. During the cutting process, the cutting line continuously rubs against the adhesive layer, generating heat. This heat can cause the adhesive layer to adhere to the cutting line, affecting the cutting effect. Spraying coolant towards the cutting line ensures that the temperature of the cutting line does not become too high, preventing the adhesive layer from melting and solidifying on the cutting line, thus extending the lifespan of the cutting line. Simultaneously, spraying coolant also reduces the flying debris generated during adhesive layer cutting, ensuring a cleaner environment.

[0070] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure. It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not further describe the various possible combinations.

[0071] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A method for cutting a photovoltaic module, used to cut the adhesive layer of the photovoltaic module using a cutting device, said cutting device having cutting lines, characterized in that, The method includes: The photovoltaic module is vertically positioned and fixed to the support surface of the support table of the cutting equipment; Obtain the position and thickness of the adhesive layer, and the tension of the cutting line; and The cutting line is controlled to cut the adhesive layer of the photovoltaic module, and the position of the cutting line in the thickness direction is adjusted according to the position and thickness of the adhesive layer and the tension of the cutting line.

2. The method for cutting photovoltaic modules according to claim 1, characterized in that, The cutting line includes a first segment and a second segment spaced apart in the thickness direction, and the step of adjusting the position of the cutting line in the thickness direction includes: Adjust the distance between the first segment and the second segment in the thickness direction so that at least one of the first segment and the second segment corresponds to the adhesive layer.

3. The method for cutting photovoltaic modules according to claim 2, characterized in that, The cutting equipment has a cutting device, which includes: The first pulley and the second pulley are rotatably mounted on the top of the support platform; A third pulley, rotatably mounted at the bottom of the support platform, is used to reverse the direction of the cutting line; and The cutting line The cutting line is sequentially wound around the first pulley, the third pulley, and the second pulley. The portion of the cutting line between the first and third pulleys is the first segment, and the portion between the second and third pulleys is the second segment. The third pulley is horizontally deflectable in the thickness direction, so that the first and second segments are staggered in the thickness direction. The step of adjusting the distance between the first segment and the second segment in the thickness direction includes: Adjust the tilt angle of the third pulley in the thickness direction, adjust the distance between the first pulley and the third pulley in the thickness direction, and / or adjust the distance between the second pulley and the third pulley in the thickness direction.

4. The method for cutting photovoltaic modules according to claim 3, characterized in that, The steps of adjusting the tilt angle of the third pulley in the thickness direction, adjusting the distance between the first pulley and the third pulley in the thickness direction, and / or adjusting the distance between the second pulley and the third pulley in the thickness direction include: The first target tilt angle of the third pulley in the thickness direction, the first target displacement of the first pulley, and the second target displacement of the third pulley are obtained based on the tension of the first segment. The second target tilt angle of the third pulley in the thickness direction, the third target displacement of the second pulley, and the fourth target displacement of the third pulley are obtained based on the tension of the second segment; and The actual tilt angle of the third pulley in the thickness direction is determined based on the first target tilt angle and the second target tilt angle. The actual distance in the thickness direction between the first pulley, the second pulley, and the third pulley is determined based on the first target displacement, the second target displacement, the third target displacement, and the fourth target displacement.

5. The method for cutting photovoltaic modules according to claim 4, characterized in that, The step of obtaining the first target tilt angle of the third pulley in the thickness direction, the first target displacement of the first pulley, and the second target displacement of the third pulley based on the tension of the first segment includes: When the tension of the first segment is greater than a first preset value but less than a second preset value, the inclination angle of the third pulley in the thickness direction is increased, and the distance between the first pulley and the third pulley in the thickness direction is increased; and When the tension in the first segment is greater than the second preset value, the tilt angle of the third pulley in the thickness direction is reduced, and the distance between the first pulley and the third pulley in the thickness direction is decreased. The step of obtaining the second target tilt angle of the third pulley in the thickness direction, the third target displacement of the second pulley, and the fourth target displacement of the third pulley based on the tension of the second segment includes: When the tension on the second segment is greater than the first preset value but less than the second preset value, the inclination angle of the third pulley in the thickness direction is increased, and the distance between the second pulley and the third pulley in the thickness direction is decreased; and When the tension on the second segment is greater than the second preset value, the inclination angle of the third pulley in the thickness direction is reduced, and the distance between the second pulley and the third pulley in the thickness direction is increased. Wherein, the second preset value is greater than the first preset value.

6. The method for cutting photovoltaic modules according to claim 2, characterized in that, The step of obtaining the tension of the cutting line includes: The tension in the first segment is detected by a first tension sensor installed on the first segment, and the tension in the second segment is detected by a second tension sensor installed on the second segment.

7. The method for cutting photovoltaic modules according to claim 1, characterized in that, The cutting equipment includes: A pressure plate, disposed opposite to the supporting surface, is used to press the photovoltaic module against the supporting surface. The support platform is equipped with rollers, which are embedded in the support platform and at least partially protrude from the surface of the support platform facing the photovoltaic module. These rollers are drive rollers used to drive the photovoltaic module to move when rotated. Preferably, the cutting device further includes a support portion disposed at the bottom of the support platform. The support portion is perpendicular to the support surface and is used to support the photovoltaic module from the bottom and drive the photovoltaic module along the moving direction of the photovoltaic module. The rotation speed of the roller is the same as the transmission speed of the support portion. The step of fixing the photovoltaic module to the support platform includes: The photovoltaic module is placed vertically on the support, and the pressure plate is pressed against the photovoltaic module against the support surface. The supporting part is a conveyor belt.

8. The method for cutting photovoltaic modules according to claim 7, characterized in that, The cutting equipment also includes a guide rail and a positioning device. The positioning device is used to drive the pressure plate closer to or away from the support table. The positioning device is movably mounted on the guide rail. Preferably, the guide rail includes a first guide rail placed horizontally in the horizontal direction and a second guide rail placed vertically in the vertical direction, one end of the first guide rail is slidably connected to the second guide rail, and the pressure plate is disposed on the first guide rail; The step of controlling the pressure plate to press against the photovoltaic module against the support surface includes: Move the pressure plate along the guide rail until it aligns with the center of the photovoltaic module; The positioning device is controlled to drive the pressure plate closer to the support platform to press the photovoltaic module against the support surface.

9. The method for cutting photovoltaic modules according to claim 7, characterized in that, The step of obtaining the position and thickness of the adhesive layer includes: The thickness of the adhesive layer and its position within the photovoltaic module are detected using an ultrasonic probe. The ultrasonic probe is disposed on the pressure plate, and the surface of the ultrasonic probe facing the photovoltaic module is flush with the surface of the pressure plate facing the photovoltaic module, so that the ultrasonic probe can contact the pressure plate.

10. The method for cutting photovoltaic modules according to claim 1, characterized in that, The step of controlling the cutting line to cut the adhesive layer of the photovoltaic module includes: The moving speed of the cutting wire relative to the photovoltaic module is controlled at 0.5m-2m / min, the linear speed of the cutting wire is controlled at 20-30m / s, and the tension on the cutting wire is controlled at 30-60N.

Images