A laminating device and method for processing photovoltaic solar panels

Abstract

The application discloses a kind of laminating device and method for photovoltaic solar panel processing, it is related to photovoltaic solar panel processing technical field, including setting on the bearing table of case and setting on the isolating cover of bearing table top, first drive mechanism is arranged in case, and it is used to drive isolating cover lifting;Second drive mechanism is arranged in case, and it is used to drive bearing table translation;Partitioned air extraction mechanism is arranged in isolating cover, and partitioned air extraction mechanism includes proportional regulating valve, center area flow guide air extraction nozzle, intermediate zone flow guide air extraction nozzle, edge area flow guide air extraction nozzle, branch vacuum pressure sensor and three air extraction cavity housings.The application is in situ by setting partitioned air extraction mechanism and cell piece string gap film restraint mechanism, by three groups of independently controllable air extraction branch cooperation different flow angle air extraction nozzle, realize the gradient deceleration and smooth flow of photovoltaic module interlayer airflow from center to edge, weaken the transverse drag force of high-speed airflow to film from power source.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic solar panel processing technology, and in particular to a bonding device and method for processing photovoltaic solar panels. Background Technology

[0002] With the rapid development of the global new energy industry, photovoltaic solar power generation technology has become one of the core technologies in the renewable energy field. The industry is rapidly iterating towards larger sizes, higher power, and higher reliability in photovoltaic modules. Large-size silicon wafers and N-type high-efficiency cell technology have become the mainstream approach, placing more stringent requirements on the encapsulation and bonding quality of photovoltaic solar panels. However, existing bonding equipment used in photovoltaic solar panel processing still has the following shortcomings during use:

[0003] Currently, large-size, high-power photovoltaic modules commonly use POE film as the core encapsulation material. However, during the bonding and encapsulation process of large-size silicon wafer photovoltaic modules, the vacuum pre-pressing stage requires the removal of gas between multiple layers of materials. When the interlayer airflow flows at high speed from the center to the edge of the module, it generates a uniform drag force on the ultra-thin POE film with low modulus and low melting point, causing micron-level lateral wrinkles to form in the gaps between the cell strings. These wrinkles cannot be eliminated by conventional flattening rollers, electrostatic adsorption, or other technologies, and they cannot be identified by the naked eye or conventional inspection after lamination, making them a typical hidden encapsulation defect. This defect leads to uneven film thickness, and under long-term outdoor high and low temperature cycling conditions, the wrinkled areas will be the first to experience interface debonding and moisture intrusion, exacerbating the PID effect of the module and significantly shortening its actual service life. Summary of the Invention

[0004] The purpose of this application is to provide a bonding device and method for processing photovoltaic solar panels, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a bonding device for processing photovoltaic solar panels, comprising a support platform mounted on a chassis and an isolation cover mounted above the support platform; a first driving mechanism is provided inside the chassis for driving the isolation cover to rise and fall; a second driving mechanism is provided inside the chassis for driving the support platform to move horizontally; a partitioned air extraction mechanism is provided inside the isolation cover, the partitioned air extraction mechanism comprising a proportional regulating valve, a central zone guide air extraction nozzle, a middle zone guide air extraction nozzle, an edge zone guide air extraction nozzle, a branch vacuum pressure sensor, and three air extraction chamber housings; all three air extraction chamber housings are disposed inside the isolation cover, and each of the three air extraction chamber housings is provided with an air extraction branch pipe; the proportional regulating valve and the branch vacuum pressure sensor are both installed on the air extraction branch pipes; the three air extraction branch pipes are connected to the same main pipe through a four-way connector, and the main pipe is connected to a vacuum system; the central zone guide air extraction nozzle, the middle zone guide air extraction nozzle, the middle zone guide air extraction nozzle, the edge zone guide air extraction nozzle, a branch vacuum pressure sensor, and three air extraction chamber housings; the three air extraction branch pipes are all disposed inside the isolation cover, and each of the three air extraction chamber housings is provided with an air extraction branch pipe; the proportional regulating valve and the branch vacuum pressure sensor are all installed on the air extraction branch pipes; the three air extraction branch pipes are connected to the same main pipe through a four-way connector, and the main pipe is connected to a vacuum system; the central zone guide air extraction nozzle, the middle zone guide air extraction nozzle, the middle zone guide air extraction nozzle, the edge zone guide air extraction nozzle, the branch vacuum pressure sensor, and the three air extraction branch pipes are all disposed inside the isolation cover, and each of the three air extraction branch pipes is disposed inside the isolation cover, the three air extraction branch pipes are all disposed inside the isolation cover, and each of the three air extraction branch pipes is disposed inside the isolation cover, the three air extraction branch pipes are all disposed inside the isolation cover, the three air extraction branch pipes are all disposed inside the isolation cover, and each of the three air extraction branch pipes is disposed inside the isolation cover, The central area air guide nozzle and the edge area air guide nozzle are each disposed in one of the air extraction chamber shells, and the central area air guide nozzle, the middle area air guide nozzle, and the edge area air guide nozzle are respectively connected to the three air extraction chamber shells; the central area air guide nozzle is disposed at the center position near the solar photovoltaic module, the edge area air guide nozzle is disposed at the edge position near the solar photovoltaic module, and the middle area air guide nozzle is disposed between the central area air guide nozzle and the edge area air guide nozzle; the air inlet end of the central area air guide nozzle, the middle area air guide nozzle, and the edge area air guide nozzle are all provided with air guide channels; the air guide angle of the air guide channel on the central area air guide nozzle and the angle between it and the film surface are greater than the angle between the air guide angle of the air guide channel on the middle area air guide nozzle and the film surface, and the air guide angle of the air guide channel on the edge area air guide nozzle is completely parallel to the interlayer gap of the solar panel module;

[0006] The chassis is equipped with an in-situ adhesive film constraint mechanism for the gaps between battery cells. This mechanism is used to apply uniform pressure to the adhesive film at the gaps between battery cells during the vacuum pre-compression stage, thereby forming an in-situ constraint.

[0007] Preferably, the first drive mechanism includes a mounting plate, a first cylinder, and multiple guide shafts; the mounting plate is fixed inside the chassis, the multiple guide shafts are disposed between the chassis and the mounting plate, the isolation cover is slidably connected to the guide shaft along the axis of the guide shaft, the first cylinder is mounted on the mounting plate, and the output end of the first cylinder is connected to the isolation cover.

[0008] Preferably, the second drive mechanism includes a connecting seat and a pair of slide rails; the pair of slide rails are arranged parallel to each other in the housing, a second cylinder is installed in the housing, and the connecting seat is located between the support platform and the output end of the second cylinder.

[0009] Preferably, the in-situ adhesive film constraint mechanism for the gaps between battery cells includes a mounting base, a pair of third cylinders, multiple sliders, and an elastic constraint strip; the pair of third cylinders are mounted on the top of the isolation cover, the mounting base is disposed inside the isolation cover, and the output end of the third cylinder passes through the isolation cover and is connected to the mounting base; multiple grooves are provided at the bottom of the mounting base, the sliders are slidably connected to the grooves, and the elastic constraint strip is disposed on the sliders; a locking mechanism is provided on the sliders and is used to control the position of the sliders on the grooves.

[0010] Preferably, an ion wind bar is provided inside the elastic constraint strip to eliminate static electricity between the layers of the solar photovoltaic module.

[0011] Preferably, the slider is provided with a constant temperature heating element, which is used to heat the adhesive film to soften it at a low temperature for a short time.

[0012] Preferably, the support platform is equipped with a low-temperature setting mechanism for the adhesive film; the low-temperature setting mechanism for the adhesive film is used to control the temperature of the adhesive film.

[0013] Preferably, the low-temperature setting mechanism for the adhesive film includes a carrier housing, multiple infrared radiation heaters, and a temperature sensor; the carrier housing is installed at the bottom of the support platform, and the inner wall of the carrier housing is provided with a heat insulation layer; the multiple infrared radiation heaters and the temperature sensor are all disposed inside the carrier housing.

[0014] Preferably, the low-temperature setting mechanism for the adhesive film further includes a heat exchange coil, which is disposed inside the bearing housing away from the heating surface of the infrared radiation heater; and the inlet and outlet ends of the heat exchange coil are both connected to the constant temperature water-cooling unit via spring hoses.

[0015] A bonding method for processing photovoltaic solar panels, employing the aforementioned bonding device for processing photovoltaic solar panels; specifically including the following steps:

[0016] Step 1, Pre-pressure positioning: First, the second drive mechanism drives the support platform to move directly under the isolation cover. Then, the first drive mechanism drives the isolation cover to descend until the isolation cover contacts the support platform, so that the solar photovoltaic module is isolated inside the isolation cover. Then, the in-situ adhesive film constraint mechanism between the cell strings applies uniform pressure to the adhesive film at the gap of the cell strings to form an in-situ constraint, thereby blocking the lateral deformation space of the adhesive film under the drag of airflow.

[0017] Step 2, Zoned Vacuuming: The negative pressure generated by the vacuum system is transmitted to the outer shell of the three vacuum chambers through the main pipe and the vacuum branch pipes, thereby causing the central zone guide vacuum nozzle, the middle zone guide vacuum nozzle, and the edge zone guide vacuum nozzle to generate negative pressure suction, guiding the airflow between the solar photovoltaic module layers to flow out smoothly and uniformly from the center to the edge. The central zone guide vacuum nozzle, the middle zone guide vacuum nozzle, and the edge zone guide vacuum nozzle at different angles avoid airflow turbulence and reduce the drag force of high-speed airflow on the film. At the same time, the vacuum pressure sensor of the branch line collects vacuum data in real time, and the opening of the proportional regulating valve of each branch line is precisely controlled according to the vacuum data to achieve closed-loop control of the vacuuming process.

[0018] In summary, the technical effects and advantages of this invention are as follows:

[0019] 1. This invention, by setting up a partitioned air extraction mechanism and an in-situ encapsulant film constraint mechanism between cell strings, and by using three sets of independent and controllable air extraction branches in conjunction with air extraction nozzles with different guiding angles, achieves gradient deceleration and smooth flow of airflow between photovoltaic modules from the center to the edge. This weakens the lateral drag force of high-speed airflow on the encapsulant film from the power source. At the same time, the in-situ encapsulant film constraint mechanism between cell strings applies uniform surface contact micro-pressure to the encapsulant film in areas prone to wrinkles, forming in-situ constraint to block the lateral deformation space of the encapsulant film. This avoids secondary defects such as insufficient interlayer venting and premature cross-linking of the encapsulant film caused by conventional methods of reducing pumping speed and increasing pre-compression temperature.

[0020] 2. This invention, by setting up a low-temperature shaping mechanism for the adhesive film, selectively heats the surface of the adhesive film at low temperatures using an infrared radiation heater of a specific wavelength. Combined with real-time temperature data acquisition by a temperature sensor and rapid temperature control by a heat exchange coil, it achieves closed-loop precise control of the adhesive film heating temperature. Without inducing cross-linking of the adhesive film, it temporarily increases the energy storage modulus of the adhesive film surface and enhances the adhesive film's resistance to airflow drag deformation. Together with the zoned air extraction mechanism and the in-situ adhesive film constraint mechanism between the battery cell strings, it forms a three-dimensional collaborative prevention and control system for airflow regulation, deformation constraint, and performance optimization. This comprehensively suppresses the formation of micron-level wrinkles in the adhesive film without causing thermal impact on other component materials such as the battery cells and backsheet, thus avoiding microcrack defects in the battery cells caused by thermal stress.

[0021] 3. This invention incorporates an ion fan bar and a constant-temperature heating element integrated within the elastic constraint strip. The ion fan bar continuously releases balanced positive and negative ions to neutralize static electricity generated between photovoltaic module layers due to friction, thus preventing localized warping and displacement of the encapsulant film caused by electrostatic adsorption. Simultaneously, the constant-temperature heating element softens the encapsulant film at the gaps between the cell strings in a short period of time, eliminating the internal stress of the encapsulant film itself and preventing wrinkling defects caused by the superposition of internal stress and airflow drag force. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the chassis of the present invention;

[0025] Figure 3 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the first driving mechanism and the partitioned air extraction mechanism of the present invention;

[0026] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the partitioned air extraction mechanism of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged structural diagram of region A in the middle;

[0028] Figure 6 This is a three-dimensional enlarged structural schematic diagram of the partitioned air extraction mechanism of the present invention;

[0029] Figure 7 This is a three-dimensional enlarged structural diagram of the central area air guide nozzle of the present invention;

[0030] Figure 8 This is a three-dimensional enlarged structural schematic diagram of the in-situ adhesive film constraint mechanism for the gaps between battery cells according to the present invention;

[0031] Figure 9 This is a partially cross-sectional, enlarged three-dimensional structural diagram of the elastic constraint strip of the present invention;

[0032] Figure 10 This is a partial cross-sectional three-dimensional structural diagram of the low-temperature setting mechanism for the adhesive film of the present invention;

[0033] Figure 11 This is a three-dimensional enlarged structural schematic diagram of the low-temperature setting mechanism for the adhesive film of the present invention;

[0034] Figure 12 This is a flowchart of the method of the present invention.

[0035] In the diagram: 1. Chassis; 2. Isolation cover; 3. First drive mechanism; 31. Mounting plate; 32. Guide shaft; 33. First cylinder; 4. Support platform; 5. Second drive mechanism; 51. Slide rail; 52. Connecting seat; 6. Zoned air extraction mechanism; 61. Air extraction chamber shell; 62. Air extraction branch pipe; 63. Proportional regulating valve; 64. Central zone guide air extraction nozzle; 65. Middle zone guide air extraction nozzle; 66. Edge zone guide air extraction nozzle; 67. Branch vacuum pressure sensor; 68. Main pipe; 7. In-situ adhesive film constraint mechanism for gaps between battery cells; 71. Mounting base plate; 72. Third cylinder; 73. Slide groove; 74. Slider; 75. Elastic constraint strip; 76. Ionizing air bar; 77. Constant temperature heating element; 8. Low temperature shaping mechanism for adhesive film; 81. Support shell; 82. Infrared radiation heater; 83. Temperature sensor; 84. Thermal insulation layer; 85. Heat exchange coil. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figures 1-3 and Figures 5-7The attached device for processing photovoltaic solar panels shown includes a support platform 4 mounted on a chassis 1 and an isolation cover 2 mounted above the support platform 4. A first drive mechanism 3 is installed inside the chassis 1 to drive the isolation cover 2 to rise and fall; a second drive mechanism 5 is installed inside the chassis 1 to drive the support platform 4 to move horizontally; a zoned air extraction mechanism 6 is installed inside the isolation cover 2, comprising a proportional regulating valve 63, a central zone guide air extraction nozzle 64, a middle zone guide air extraction nozzle 65, an edge zone guide air extraction nozzle 66, a branch vacuum pressure sensor 67, and three air extraction chamber housings 61; all three air extraction chamber housings 61 are located inside the isolation cover 2, and each of the three air extraction chamber housings 61 is equipped with an air extraction device. Branch pipe 62, proportional regulating valve 63, and branch vacuum pressure sensor 67 are all installed on the extraction branch pipe 62; the three extraction branch pipes 62 are connected to the same main pipe 68 via a four-way connector, and the main pipe 68 is connected to the vacuum system; it is understood that the vacuum system is existing technology and is not shown in the figure. The vacuum system is set inside the chassis 1 and includes a vacuum pump, a vacuum main pipeline, vacuum valves, and a vacuum storage tank, which can provide stable negative pressure power to all independent extraction branch pipes 62, realize the extraction of interlayer gas of solar photovoltaic modules, and achieve zoned extraction control in conjunction with the zoned extraction mechanism 6; the central zone guide extraction nozzle 64 and the intermediate zone guide extraction nozzle 65 are also included. Each of the three air extraction nozzles—the central air extraction nozzle 64, the middle air extraction nozzle 65, and the edge air extraction nozzle 66—is located within one of the outer shells of the extraction chamber 61. The central air extraction nozzle 64 is positioned at the center near the solar photovoltaic module, the edge air extraction nozzle 66 is positioned at the edge near the solar photovoltaic module, and the middle air extraction nozzle 65 is positioned between the central air extraction nozzle 64 and the edge air extraction nozzle 66. Each of the central air extraction nozzle 64, the middle air extraction nozzle 65, and the edge air extraction nozzle 66 has a guide air passage at its inlet. The angle between the guide air channel 4 and the surface of the adhesive film is greater than the angle between the guide air channel 65 of the middle zone guide air extraction nozzle and the surface of the adhesive film. The guide air channel of the edge zone guide air extraction nozzle 66 is completely parallel to the interlayer gap of the solar panel module. Preferably, the guide air channel of the central zone guide air extraction nozzle 64 forms a 15° angle with the surface of the adhesive film, and the guide air channel of the middle zone guide air extraction nozzle 65 forms a 7° angle with the surface of the adhesive film. The housing 1 is provided with an in-situ adhesive film constraint mechanism 7 for the gap between the battery cells. The in-situ adhesive film constraint mechanism 7 for the gap between the battery cells is used to apply uniform pressure to the adhesive film at the gap between the battery cells during the vacuum pre-compression stage to form an in-situ constraint.

[0038] It should be noted that during the vacuum pre-compression stage, the external vacuum system provides negative pressure to the outer shells 61 of the three vacuum chambers through the main pipe 68 and three sets of vacuum branch pipes 62. This causes the central area guide vacuum nozzle 64, the middle area guide vacuum nozzle 65, and the edge area guide vacuum nozzle 66 to simultaneously generate negative pressure suction, guiding the airflow between the photovoltaic solar panel layers to flow smoothly and uniformly from the center of the module to the edge. The branch vacuum pressure sensor 67 can collect the vacuum level data in the corresponding vacuum branch pipe 62 in real time and feed the data back to the control unit of the device. The control unit can adjust the opening of the proportional regulating valve 63 on the corresponding pipeline according to the vacuum level data to achieve independent closed-loop control of the pumping rate of the three sets of pumping branches. It is understood that the control unit, the branch vacuum pressure sensor 67 and the proportional regulating valve 63 are all existing technologies and will not be described in detail. In the vacuum pre-compression stage, the in-situ adhesive film constraint mechanism 7 applies uniform surface contact pressure to the adhesive film at the gap of the photovoltaic solar panel's cell strings to form an in-situ constraint and block the lateral deformation space of the adhesive film under the drag of airflow.

[0039] By coordinating the partitioned air extraction mechanism 6 and the in-situ encapsulant film constraint mechanism 7 between the cell strings, the system works simultaneously from two dimensions: the source of airflow power and the constraint of encapsulant film deformation. This can suppress micron-level wrinkles in the encapsulant film caused by interlayer airflow drag during the vacuum pre-pressing stage of large-size high-power photovoltaic modules to the greatest extent. At the same time, by cooperating with three sets of independent air extraction branch pipes 62 and the central area air extraction nozzles 64, the middle area air extraction nozzles 65, and the edge area air extraction nozzles 66 with different flow angles, the system can achieve gradient control of the interlayer airflow velocity without reducing the overall exhaust efficiency. This avoids secondary defects such as insufficient interlayer exhaust and residual bubbles caused by conventional speed reduction.

[0040] See Figures 1-3 The first drive mechanism 3 includes a mounting plate 31, a first cylinder 33, and multiple guide shafts 32. The mounting plate 31 is fixed inside the housing 1, and the multiple guide shafts 32 are disposed between the housing 1 and the mounting plate 31. The isolation cover 2 is slidably connected to the guide shaft 32 along the axis of the guide shaft 32. The first cylinder 33 is mounted on the mounting plate 31, and the output end of the first cylinder 33 is connected to the isolation cover 2.

[0041] It should be noted that during the operation of the device, the first cylinder 33 can output telescopic driving force to drive the isolation cover 2 to complete the vertical lifting action along the axis of the guide shaft 32. The guide shaft 32 can accurately guide the lifting process of the isolation cover 2, ensuring the stability and positional accuracy of the lifting process of the isolation cover 2, so that the isolation cover 2 can be precisely fitted with the support platform 4 to form a sealed pre-compression chamber, providing a stable sealed environment for the vacuum pre-compression stage partitioned air extraction mechanism 6 to perform air extraction operation.

[0042] See Figures 1-3The second drive mechanism 5 includes a connecting seat 52 and a pair of slide rails 51; the pair of slide rails 51 are arranged parallel to each other in the housing 1, the housing 1 houses the second cylinder, and the connecting seat 52 is located between the support platform 4 and the output end of the second cylinder.

[0043] It should be noted that during the operation of the device, the second cylinder can output telescopic driving force, which drives the bearing platform 4 to complete horizontal translation along the axis of the slide rail 51 through the connecting seat 52. This realizes the switching between the loading and unloading station and the pre-pressing station of the photovoltaic solar panel to be processed, so that the photovoltaic solar panel to be processed can be accurately moved to the pre-pressing station directly below the isolation cover 2. This ensures that the in-situ adhesive film constraint mechanism 7 for the gap between the battery cells can be accurately aligned with the gap between the battery cells. At the same time, it ensures that the central area guide air nozzle 64, the middle area guide air nozzle 65, and the edge area guide air nozzle 66 of the partitioned air extraction mechanism 6 can accurately correspond to the side of the photovoltaic module, further improving the operating accuracy and wrinkle suppression effect of the device.

[0044] See Figure 3 and Figures 8-9 The in-situ adhesive film constraint mechanism 7 for the gaps between battery cells includes a mounting base 71, a pair of third cylinders 72, multiple sliders 74, and an elastic constraint bar 75. The pair of third cylinders 72 are mounted on the top of the isolation cover 2, the mounting base 71 is disposed inside the isolation cover 2, and the output end of the third cylinders 72 passes through the isolation cover 2 and is connected to the mounting base 71. Multiple grooves 73 are provided at the bottom of the mounting base 71, the sliders 74 are slidably connected to the grooves 73, and the elastic constraint bar 75 is disposed on the sliders 74. A locking mechanism is provided on the sliders 74 and is used to control the position of the sliders 74 on the grooves 73. It is understood that the locking mechanism is prior art and is not shown in the figure. For example, a screw is screwed into the slider 74, the axis of the screw is perpendicular to the length direction of the groove 73, and the position of the slider 74 is locked by rotating the screw to abut against the groove 73.

[0045] It should be noted that before the device is in operation, the position of the slider 74 in the groove 73 can be adjusted according to the spacing of the solar cell strings of the photovoltaic solar panel to be processed, so that the elastic constraint strip 75 corresponds one-to-one with the gap of the solar cell strings, and the slider 74 is locked and fixed by the locking mechanism. During the vacuum pre-pressing stage, the third cylinder 72 can output a downward driving force, which drives the mounting substrate 71 and the elastic constraint strip 75 to move down synchronously, so that the bottom of the elastic constraint strip 75 is in close contact with the tempered glass upper surface of the photovoltaic solar panel, and a uniform surface contact micro-pressure is applied to the film at the gap of the solar cell strings.

[0046] By using the adjustable slider 74 in conjunction with the elastic constraint bar 75, the device can adapt to the processing requirements of photovoltaic solar panels with different specifications and string spacings, making it more compatible and adaptable. At the same time, the independent lifting structure driven by the third cylinder 72 can precisely control the pressure applied by the elastic constraint bar 75, forming in-situ constraint only on the film at the gap between the cell strings, completely avoiding the microcrack defects caused by pressure acting on the cell body. It can completely block the formation space of micron-level wrinkles in the film from the deformation conditions, further improving the wrinkle suppression effect of the device.

[0047] See Figure 9 An ion bar 76 is installed within the elastic constraint strip 75 to eliminate static electricity between the layers of the solar photovoltaic module. It should be noted that the power supply terminal of the ion bar 76 is electrically connected to the main unit of the static eliminator of the device. It is understood that both the ion bar 76 and the main unit of the static eliminator are existing technologies and will not be described in detail. During the vacuum pre-compression stage, the ion bar 76 continuously releases balanced positive and negative ions, which can diffuse into the interlayer gaps of the photovoltaic solar panel to neutralize the static electricity generated by friction between the encapsulant film and the cells and tempered glass. By integrating the ion bar 76 inside the elastic constraint strip 75, static electricity between the layers of the photovoltaic solar panel can be continuously eliminated during the vacuum pre-compression stage, avoiding the problem of localized warping and displacement of the encapsulant film caused by static adsorption, further reducing the risk of encapsulant film wrinkling, and avoiding the residue of foreign matter between layers caused by static adsorption, thereby improving the encapsulation cleanliness and finished product yield of the photovoltaic solar panel.

[0048] See Figure 9 The slider 74 is equipped with a constant temperature heating element 77, which is used to heat the adhesive film to soften it at a low temperature for a short time. It should be noted that during the vacuum pre-compression stage, the constant temperature heating element 77 can heat up to a preset constant temperature and transfer the heat to the tempered glass of the photovoltaic solar panel through the elastic constraint strip 75, and then to the adhesive film at the gap of the cell string, to heat the adhesive film at a low temperature for a short time. By integrating the constant temperature heating element 77 inside the slider 74, the adhesive film at the gap of the cell string can be softened at a low temperature for a short time without causing cross-linking of the adhesive film, eliminating the internal stress of the adhesive film itself, and avoiding wrinkle defects caused by the superposition of internal stress and airflow drag force.

[0049] See Figures 10-11 The bearing platform 4 is equipped with a low-temperature setting mechanism 8 for adhesive film; the low-temperature setting mechanism 8 is used to control the temperature of the adhesive film.

[0050] It should be noted that the low-temperature shaping mechanism 8 can precisely control the temperature of the encapsulant film of the photovoltaic solar panel throughout the entire vacuum pre-pressing process. Without inducing cross-linking of the encapsulant film, it can temporarily increase the energy storage modulus of the surface layer of the encapsulant film and enhance the film's resistance to airflow drag deformation. By setting the low-temperature shaping mechanism 8 inside the support platform 4, the deformation resistance of the encapsulant film can be further enhanced from the perspective of material performance. Together with the partitioned air extraction mechanism 6 and the in-situ encapsulant film constraint mechanism 7 between the cell strings, it forms a three-dimensional collaborative prevention and control system, which comprehensively suppresses the generation of micron-level wrinkles in the encapsulant film. At the same time, it will not have a thermal impact on other component materials such as cells and backsheets, and avoids microcrack defects in cells caused by thermal stress.

[0051] Example 2: The technical solution of this example differs from that of Example 1 in that: (See below) Figures 10-11 The low-temperature setting mechanism 8 for adhesive film includes a carrier housing 81, multiple infrared radiation heaters 82, and a temperature sensor 83. The carrier housing 81 is installed at the bottom of the carrier platform 4, and the inner wall of the carrier housing 81 is provided with a heat insulation layer 84. The multiple infrared radiation heaters 82 and the temperature sensor 83 are all located inside the carrier housing 81.

[0052] It should be noted that the closed-loop temperature control structure of the infrared radiation heater 82 and the temperature sensor 83 can achieve selective low-temperature heating of the film, accurately control the heating temperature of the film, and avoid secondary defects such as premature cross-linking and uneven cross-linking caused by temperature overshoot. At the same time, the heat insulation layer 84 on the inner wall of the bearing housing 81 can reduce heat loss and ensure the uniformity and stability of the heating temperature.

[0053] See Figure 11 The low-temperature setting mechanism 8 for the adhesive film also includes a heat exchange coil 85, which is located inside the housing 81 away from the heating surface of the infrared radiation heater 82. Both the inlet and outlet ends of the heat exchange coil 85 are connected to the constant-temperature water-cooled unit via flexible spring hoses. It is understood that both the flexible spring hoses and the constant-temperature water-cooled unit are existing technologies and are not shown in the figure. The water-cooled constant-temperature unit has a built-in compressor, evaporator, condenser, circulating water pump, and PID temperature control module, which can provide constant-temperature cooling water. The water-cooled constant-temperature unit circulates cooling water at a set temperature into the heat exchange coil 85, and simultaneously adjusts the flow rate and temperature of the cooling water according to the temperature data from the temperature sensor 83, achieving rapid and precise cooling of the temperature-controlled chamber and ensuring temperature control accuracy.

[0054] It should be noted that during the operation of the device, the external constant temperature water cooling unit can circulate constant temperature cooling water into the heat exchange coil 85 to rapidly cool the internal cavity of the bearing shell 81. By setting the heat exchange coil 85 inside the bearing shell 81, it can work with the infrared radiation heater 82 to achieve rapid and precise temperature control, effectively avoiding temperature overshoot during the heating process, further improving the accuracy of temperature control, ensuring that the film is always within the preset safe heating range, and at the same time, it can quickly reduce the cavity temperature after the pre-pressing process to avoid premature cross-linking of the film caused by residual heat, further improving the encapsulation quality of the photovoltaic solar panel.

[0055] A bonding method for processing photovoltaic solar panels, see reference. Figures 1-12 The above-mentioned bonding device for photovoltaic solar panel processing is used; specifically, it includes the following steps:

[0056] Step 1, Pre-pressure positioning: First, the second drive mechanism 5 drives the support platform 4 to move directly below the isolation cover 2. Then, the first drive mechanism 3 drives the isolation cover 2 to descend until the isolation cover 2 contacts the support platform 4, so that the solar photovoltaic module is isolated inside the isolation cover 2. Then, the in-situ adhesive film constraint mechanism 7 applies uniform pressure to the adhesive film at the gap of the cell string to form an in-situ constraint, thereby blocking the lateral deformation space of the adhesive film under the drag of airflow.

[0057] Step 2, Zoned Vacuuming: The negative pressure generated by the vacuum system is transmitted to the outer shells 61 of the three vacuum chambers through the main pipe 68 and the vacuum branch pipes 62, thereby causing the central zone guide vacuum nozzle 64, the middle zone guide vacuum nozzle 65, and the edge zone guide vacuum nozzle 66 to generate negative pressure suction, guiding the interlayer airflow of the solar photovoltaic module to flow out smoothly and uniformly from the center to the edge. The central zone guide vacuum nozzle 64, the middle zone guide vacuum nozzle 65, and the edge zone guide vacuum nozzle 66 at different angles avoid airflow turbulence and reduce the drag force of high-speed airflow on the film. At the same time, the vacuum pressure sensor 67 of the branch line collects vacuum data in real time, and the opening degree of the proportional regulating valve 63 of each branch line is precisely controlled according to the vacuum data to achieve closed-loop control of the vacuuming process.

[0058] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bonding device for processing photovoltaic solar panels, comprising a support platform (4) disposed on a chassis (1) and an isolation cover (2) disposed above the support platform (4), characterized in that: The isolation cover (2) is equipped with a partitioned air extraction mechanism (6), which includes a central area guide air extraction nozzle (64), a middle area guide air extraction nozzle (65), an edge area guide air extraction nozzle (66), and three air extraction chamber shells (61). All three air extraction chamber shells (61) are located inside the isolation cover (2), and each of the three air extraction chamber shells (61) is equipped with an air extraction branch pipe (62). The three air extraction branch pipes (62) pass through... The four-way valve is connected to the same main pipe (68), and the main pipe (68) is connected to the vacuum system; the central area guide air extraction nozzle (64), the middle area guide air extraction nozzle (65) and the edge area guide air extraction nozzle (66) are all installed in one of the vacuum chamber shells (61), and the central area guide air extraction nozzle (64), the middle area guide air extraction nozzle (65) and the edge area guide air extraction nozzle (66) are respectively connected to the three vacuum chamber shells (61); The chassis (1) is provided with an in-situ adhesive film constraint mechanism (7) for the gap between battery cells. The in-situ adhesive film constraint mechanism (7) is used to apply uniform pressure to the adhesive film at the gap between battery cells during the vacuum pre-compression stage to form an in-situ constraint.

2. The bonding device for processing photovoltaic solar panels according to claim 1, characterized in that: The partitioned air extraction mechanism (6) also includes a proportional regulating valve (63) and a branch vacuum pressure sensor (67), both of which are installed on the air extraction branch pipe (62).

3. The bonding device for processing photovoltaic solar panels according to claim 1, characterized in that: The central area air guide nozzle (64) is located at the center of the side close to the solar photovoltaic module, the edge area air guide nozzle (66) is located at the edge of the side close to the solar photovoltaic module, and the middle area air guide nozzle (65) is located between the central area air guide nozzle (64) and the edge area air guide nozzle (66). The air inlet ends of the central area air guide nozzle (64), the middle area air guide nozzle (65), and the edge area air guide nozzle (66) are all provided with air guide channels. The angle between the air guide channel on the central area air guide nozzle (64) and the surface of the adhesive film is greater than the angle between the air guide channel on the middle area air guide nozzle (65) and the surface of the adhesive film. The air guide angle on the edge area air guide nozzle (66) is completely parallel to the interlayer gap of the solar panel module.

4. The bonding device for processing photovoltaic solar panels according to claim 1, characterized in that: The chassis (1) is equipped with a first drive mechanism (3) and is used to drive the isolation cover (2) to rise and fall; The first drive mechanism (3) includes a mounting plate (31), a first cylinder (33), and a plurality of guide shafts (32); the mounting plate (31) is fixed inside the chassis (1), the plurality of guide shafts (32) are disposed between the chassis (1) and the mounting plate (31), the isolation cover (2) is slidably connected to the guide shaft (32) along the axis of the guide shaft (32), the first cylinder (33) is mounted on the mounting plate (31), and the output end of the first cylinder (33) is connected to the isolation cover (2).

5. The bonding device for processing photovoltaic solar panels according to claim 1, characterized in that: The chassis (1) is equipped with a second drive mechanism (5) for driving the carrier platform (4) to translate. The second drive mechanism (5) includes a connecting seat (52) and a pair of slide rails (51); the pair of slide rails (51) are arranged parallel to each other in the housing (1), the housing (1) is equipped with a second cylinder, and the connecting seat (52) is located between the support platform (4) and the output end of the second cylinder.

6. The bonding device for processing photovoltaic solar panels according to claim 1, characterized in that: The in-situ adhesive film constraint mechanism (7) for the gap between the battery cells includes a mounting base (71), a pair of third cylinders (72), multiple sliders (74), and an elastic constraint strip (75); the pair of third cylinders (72) are mounted on the top of the isolation cover (2), the mounting base (71) is disposed inside the isolation cover (2), and the output end of the third cylinders (72) passes through the isolation cover (2) and is connected to the mounting base (71); multiple grooves (73) are provided at the bottom of the mounting base (71), the sliders (74) are slidably connected to the grooves (73), and the elastic constraint strip (75) is disposed on the sliders (74); a locking mechanism is provided on the sliders (74) and is used to control the position of the sliders (74) on the grooves (73).

7. The bonding device for processing photovoltaic solar panels according to claim 6, characterized in that: An ion wind bar (76) is provided inside the elastic constraint bar (75) to eliminate static electricity between layers of the solar photovoltaic module; The slider (74) is equipped with a constant temperature heating element (77) for heating the adhesive film to soften it at a low temperature for a short time.

8. The bonding device for processing photovoltaic solar panels according to claim 1, characterized in that: The support platform (4) is provided with a low-temperature setting mechanism (8) for adhesive film; the low-temperature setting mechanism (8) for adhesive film includes a support housing (81), multiple infrared radiation heaters (82) and a temperature sensor (83); the support housing (81) is installed at the bottom of the support platform (4), and the inner wall of the support housing (81) is provided with a heat insulation layer (84); the multiple infrared radiation heaters (82) and the temperature sensor (83) are all located inside the support housing (81).

9. A bonding device for processing photovoltaic solar panels according to claim 8, characterized in that: The low-temperature shaping mechanism (8) of the adhesive film also includes a heat exchange coil (85), which is located inside the bearing housing (81) away from the heating surface of the infrared radiation heater (82); and the inlet and outlet ends of the heat exchange coil (85) are connected to the constant temperature water-cooled unit through spring hoses.

10. A bonding method for processing photovoltaic solar panels, characterized in that: The bonding apparatus for processing photovoltaic solar panels according to any one of claims 1-9 specifically includes the following steps: Step 1, Pre-pressure positioning: By controlling the descent of the isolation cover (2) to contact the support platform (4), the solar photovoltaic module is completely isolated inside the isolation cover (2); then, the in-situ adhesive film constraint mechanism (7) of the cell string gap applies uniform pressure to the adhesive film at the cell string gap position to form in-situ constraint, so as to block the lateral deformation space of the adhesive film under the airflow drag. Step 2, Zoned Air Extraction: The negative pressure generated by the vacuum system is transmitted to the outer shells (61) of the three extraction chambers through the main pipe (68) and the extraction branch pipe (62), thereby causing the central area guide air extraction nozzle (64), the middle area guide air extraction nozzle (65) and the edge area guide air extraction nozzle (66) to generate negative pressure suction, guiding the airflow between the layers of the solar photovoltaic module to flow out smoothly and evenly from the center to the edge.

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