Solar photovoltaic module no-gel plate laminating machine structure and laminating method

Abstract

The application relates to a solar photovoltaic module no-glue-plate laminating machine structure and a laminating method applied to the field related to laminating technology, wherein the no-glue-plate laminating machine structure is characterized by the following steps: a corrugated pipe assembly and a lower pressing plate are arranged, the glue plate in the prior art is replaced, the solar photovoltaic module is laminated without the glue plate, a series of problems such as cost and laminating quality caused by the easy damage of the glue plate are effectively avoided, and in addition, the setting of an inclination detection assembly can monitor whether the lower pressing plate is inclined before laminating, so that the situation that the lower pressing plate is inclined due to the accumulated error caused by the wear of a guide shaft can be found in time, the uniformity of laminating is effectively ensured, the two glass plates in the photovoltaic module to be pressed are monitored in real time during laminating, the stable laminating process is effectively ensured, the situation that the two glass plates are relatively displaced can be found in time, the situation that a batch of products are scrapped due to the relative displacement does not easily occur, and the yield is effectively ensured.

Description

Technical Field

[0001] This invention relates to a laminator structure and lamination method, and particularly to a laminateless laminator structure and lamination method for solar photovoltaic modules applied in the field of lamination technology. Background Technology

[0002] A solar cell module laminator operates by creating a vacuum at high temperatures, melting the module materials, removing air, and then pressing them together. For example... Figure 3 In existing technologies, module pressurization typically employs flexible materials such as silicone / rubber sheets, achieving pressurization through the vacuum pressure difference between the upper and lower chambers. For example, the module is located in the lower chamber, with the upper and lower chambers separated by a silicone sheet. During pressurization, the pressure in the lower chamber is 0 kPa, while the pressure in the upper chamber is 80 kPa. Due to this pressure difference, the silicone sheet is pressed onto the module, creating a pressure of approximately 8 t / m². This ensures the module's flatness and eliminates internal air bubbles.

[0003] However, the adhesive sheet is stretched and subjected to pressure during each lamination process, making it a consumable item with a lifespan ranging from 6,000 to 20,000 cycles. This lamination method has the following disadvantages:

[0004] 1. Firstly, the laminating sheets need to be replaced on average every two months, resulting in high lamination costs;

[0005] 2. The harmless treatment of waste rubber sheets is difficult;

[0006] 3. Labor costs for replacing the rubber sheet, including transportation and replacement;

[0007] 4. The time cost of replacing the rubber sheet: each replacement requires machine downtime, resulting in lost production capacity;

[0008] 5. Electricity costs; replacing the rubber sheet requires preheating and baking.

[0009] 6. Yield: If the adhesive sheet is damaged, it will directly affect the quality of the components produced by the current process, resulting in downgrading or scrapping.

[0010] Therefore, there is an urgent need to provide a method that can laminate solar cell modules without using adhesive sheets. Summary of the Invention

[0011] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that in the existing lamination method using adhesive sheets, the adhesive sheets are easily damaged, resulting in high lamination costs, and the damage will directly affect the lamination effect and the yield.

[0012] To address the aforementioned issues, this invention provides a structure for a glueless laminated solar photovoltaic module, comprising a lower heating plate fixedly connected to the laminater, an upper heating plate with a control center located above the lower heating plate, two electric cylinders fixedly connected to the upper end of the upper heating plate, a pressure strip located at the lower edge of the upper heating plate, the pressure strip being fixedly connected to the upper heating plate via a linkage seat and bolts, sealing rings embedded on both the upper and lower surfaces of the pressure strip, the sealing rings being in contact with the upper heating plate, and when the pressure strip contacts the lower heating plate, the upper heating plate, the lower heating plate, and the pressure strip together form a lamination cavity, multiple upper heating elements and multiple lower heating elements are respectively installed on the opposite ends of the upper and lower heating plates, and corrugated pipe assemblies are fixedly connected below the two electric cylinders, the corrugated pipe assemblies movably penetrating the upper heating plate and extending into the lamination cavity, and a lower pressure plate being fixedly connected to the lower ends of the two corrugated pipe assemblies.

[0013] The bellows assembly includes three guide shafts that are fixedly connected to the extended ends of the electric cylinders, a lower positioning plate fixedly connected to the lower ends of the three guide shafts, an upper positioning plate fixed to the middle of the lower end of the upper heating plate by bolts, and a bellows fixedly connected between the upper positioning plate and the guide shafts. The multiple guide shafts move sequentially through the upper heating plate and the upper positioning plate and are located inside the bellows. A sealing ring is also fixedly embedded at the upper end of the upper positioning plate, and the sealing ring is in contact with the lower end of the upper heating plate.

[0014] Tilt detection components are installed at both ends of the lower pressure plate, and high-intensity cameras are also installed on both sides of the lower pressure plate. The high-intensity cameras correspond to the tilt detection components, and both are connected to the control center signal.

[0015] In the above-mentioned structure of the solar photovoltaic module adhesive-free laminator, the corrugated pipe assembly and the lower pressure plate can replace the adhesive sheet in the existing technology, realizing the lamination of solar photovoltaic modules without adhesive sheet, thereby effectively avoiding a series of problems caused by adhesive sheet, improving the lamination effect and reducing the lamination cost.

[0016] As a further improvement of this application, guide copper sleeves are fitted on the outer ends of the three guide shafts. The guide copper sleeves are fixedly connected to the upper heating plate, and a self-lubricating graphite layer is fixedly embedded in the inner wall of the guide copper sleeves.

[0017] As a further improvement of this application, the tilt detection component includes an extension plate fixedly connected to the lower pressure plate, a laser rangefinder fixedly connected to the lower end of the extension plate, and a tilt measuring optical tube connected to the lower end of the extension plate via an adaptive rod. A high-intensity camera is also installed at the lower end of the extension plate, and the tilt measuring optical tube is located between the laser rangefinder and the high-intensity camera. The laser rangefinder and the corresponding tilt measuring optical tube are coaxially arranged.

[0018] As a further improvement of this application, the adaptive rod includes a positioning seat fixedly connected to the extension plate and a vertical end fixedly connected to the middle of the inclinometer tube, with the vertical end and the positioning seat being rotatably connected to each other.

[0019] As a further improvement of this application, the inclinometer includes a counterweight semi-column and an inclinometer semi-column fixedly connected to the upper end of the counterweight semi-column. The center of the counterweight semi-column and the inclinometer semi-column forms a light-passing hole, and the inner diameter of the light-passing hole is no more than 3 times the diameter of the laser beam.

[0020] As a further improvement of this application, the inclinometer semi-column includes multiple light-shielding layers and multiple light-revealing layers respectively fixedly connected between two adjacent light-shielding layers. The light-shielding layers are made of opaque light-shielding material, and the light-revealing layers are made of transparent light-guiding material.

[0021] As a further improvement of this application, the two laser rangefinders are set on different axes, with a height difference between them, and the laser beams emitted by the two laser rangefinders correspond exactly to the upper and lower plates of the photovoltaic module to be pressed. The lower laser rangefinder does not contact the upper surface of the lower heating plate during lamination.

[0022] A lamination method for a glue-free laminate structure of a solar photovoltaic module includes the following steps:

[0023] S1. First, control the upper heating plate to move up to open the lamination chamber. At this time, first apply a dark coating to the edge of the photovoltaic module to be pressed, then move the photovoltaic module to be pressed to the target position in the lamination chamber, and then control the upper heating plate to reset so that the lamination chamber is in a sealed state.

[0024] S2. Start vacuuming to put the lamination chamber in a vacuum state, thereby melting the EVA adhesive in the photovoltaic module to be pressed, and squeezing out the air in the EVA adhesive and removing it from the lamination chamber.

[0025] S3. The bellows assembly is extended by an electric cylinder to gradually move the lower pressure plate down and make contact with the photovoltaic module to be pressed. At this time, the tilt detection component is activated to detect whether the lower pressure plate is tilted and to locate the relative position of the two glass plates of the photovoltaic module to be pressed.

[0026] S4. When the tilt detection component detects that the lower pressure plate is not tilted, the bellows component is pushed by the electric cylinder, which in turn drives the lower pressure plate to press the photovoltaic module to be pressed for lamination. During this process, the tilt detection component monitors the relative position of the two glass plates in real time. When the lateral relative position of the two does not change, lamination continues. When lateral displacement occurs, it can be fed back to the control center in real time, so that the staff can repair it in time. In summary, the use of corrugated pipe components and a lower pressure plate can replace the adhesive sheet in existing technologies, enabling the lamination of solar photovoltaic modules without an adhesive sheet. This effectively avoids a series of problems caused by the easy loss of adhesive sheets, such as cost and lamination quality issues. In addition, with the addition of a tilt detection component, the tilt of the lower pressure plate can be monitored before lamination, making it easy to detect the tilt caused by the cumulative error due to the vertical movement of the corrugated pipe component. This effectively ensures the uniformity of lamination. During lamination, the two glass plates in the photovoltaic module to be laminated are monitored in real time, which effectively ensures the stability of the entire lamination process and timely detection of relative displacement between the two glass plates. This facilitates timely repairs in case of abnormalities and reduces the likelihood of batches of products being scrapped due to relative errors, thus effectively ensuring the yield rate. Attached Figure Description

[0027] Figure 1 This is a frontal cross-sectional view of the bellows in the first and second embodiments of this application when the bellows is installed inside.

[0028] Figure 2 for Figure 1 A schematic diagram at point A in the middle;

[0029] Figure 3 This is a schematic diagram of the use of adhesive sheet lamination in the prior art;

[0030] Figure 4 This is a schematic diagram illustrating the material loading process according to the first and second embodiments of this application;

[0031] Figure 5 This is a schematic diagram of the lower pressure plate portion during lamination in the first and second embodiments of this application;

[0032] Figure 6 for Figure 5 A schematic diagram at point B in the middle;

[0033] Figure 7 This is a front view of the tilt detection component according to the first and second embodiments of this application;

[0034] Figure 8 This is a schematic diagram of the radial cross-section of the inclinometer tube according to the first and second embodiments of this application;

[0035] Figure 9These are perspective views of the inclinometer tubes according to the first and second embodiments of this application.

[0036] Figure 10 This is an arbitrary diagram of the tilt detection component when the lower pressure plate tilts according to the first and second embodiments of this application;

[0037] Figure 11 This is a frontal cross-sectional view of the bellows in the first and second embodiments of this application when it is installed externally.

[0038] The following are the labels in the diagram: 1 Upper heating plate, 2 Lower heating plate, 101 Upper heating element, 102 Linkage seat, 201 Lower heating element, 3 Pressure strip, 4 Electric cylinder, 5 Bellows assembly, 6 Lower pressure plate, 51 Upper positioning plate, 52 Bellows, 53 Guide shaft, 54 Guide copper sleeve, 55 Lower positioning plate, 71 Extension plate, 72 Laser rangefinder, 73 High-intensity camera, 8 Inclinometer tube, 81 Counterweight half-column, 82 Inclinometer half-column, 801 Light-passing hole, 821 Light-revealing layer, 822 Light-shielding layer, 9 Adaptive rod, 91 Vertical end, 92 Positioning seat. Detailed Implementation

[0039] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0040] First implementation method:

[0041] Figure 1 This invention discloses a structure for a glueless laminated solar photovoltaic module, including a lower heating plate 2 fixedly connected to the laminater, and an upper heating plate 1 with a control center located above the lower heating plate 2. An electric push rod, electric hydraulic cylinder, or electric pneumatic cylinder is also provided between the upper heating plate 1 and the laminater for driving the upper heating plate 1. Two electric cylinders 4 are located at the upper end of the upper heating plate 1, and the electric cylinders 4 are used to drive a bellows assembly 5 to achieve hot pressing of the photovoltaic module to be pressed. The electric cylinders 4 are fixedly connected to the laminater. A pressure strip 3 is provided at the lower edge of the upper heating plate 1, and the pressure strip 3 is connected to the upper heating plate 1 via a connecting... The moving seat 102 is fixedly connected with bolts. The upper and lower surfaces of the pressure strip 3 are inlaid with sealing rings. The sealing rings are pressed and contacted with the upper heating plate 1. When the pressure strip 3 contacts the lower heating plate 2, the upper heating plate 1, the lower heating plate 2 and the pressure strip 3 together form a lamination cavity. Multiple upper heating plates 101 and multiple lower heating plates 201 are respectively installed on the opposite end faces of the upper heating plate 1 and the lower heating plate 2. Corrugated pipe assemblies 5 are fixedly connected below the two electric cylinders 4. The corrugated pipe assemblies 5 can move through the upper heating plate 1 and extend into the lamination cavity. The lower ends of the two corrugated pipe assemblies 5 are fixedly connected to the lower pressure plate 6.

[0042] The heating method of the upper heating element 101 and the lower heating element 201 is not limited. It can be one or more of electromagnetic heating, electric heating, oil heating, and lamp heating. The specific implementation can be selectively set according to the actual situation.

[0043] like Figure 2 The bellows assembly 5 includes three guide shafts 53, each fixedly connected to the extended end of the electric cylinder 4; a lower positioning plate 55 fixedly connected to the lower end of the three guide shafts 53; an upper positioning plate 51 fixed to the lower middle of the upper heating plate 1 by bolts; and a bellows 52 fixedly connected between the upper positioning plate 51 and the guide shafts 53. The multiple guide shafts 53 sequentially move through the upper heating plate 1 and the upper positioning plate 51 and are located inside the bellows 52. A sealing ring is also fixedly embedded at the upper end of the upper positioning plate 51, and the sealing ring is in contact with the lower end of the upper heating plate 1. In use, the photovoltaic module to be pressed is moved to the lower pressure plate 6, and then the upper heating plate 1 is controlled to move down to seal the lamination chamber. At this time, a vacuum is drawn and heated to melt the EVA adhesive at the center of the module to be pressed, while the internal air bubbles overflow. Then, the bellows assembly 5 and the lower pressure plate 6 are controlled to move down to squeeze the photovoltaic module to be pressed, thereby achieving lamination.

[0044] The outer ends of the three guide shafts 53 are all fitted with guide copper sleeves 54, which are fixedly connected to the upper heating plate 1. The inner wall of the guide copper sleeves 54 is fixedly inlaid with a self-lubricating graphite layer to achieve self-lubrication and effectively ensure the smoothness of the guide shafts 53 passing through the upper heating plate 1 during lamination, thus effectively ensuring the continuity of lamination.

[0045] like Figure 11 As shown, in specific implementation, the corrugated pipe can be set outside the upper heating plate 1 according to actual needs, and the upper heating plate 101 can also be set inside the lamination cavity according to actual needs.

[0046] In summary, by using the bellows assembly 5 and the lower pressure plate 6, it can replace... Figure 3 The existing adhesive sheet technology enables the lamination of solar photovoltaic modules without the need for an adhesive sheet, thereby effectively avoiding a series of problems such as cost and lamination quality caused by the easy loss of adhesive sheets.

[0047] Second implementation method:

[0048] This embodiment adds a tilt detection component to the first embodiment, while the rest remains the same as the first embodiment.

[0049] Figure 4-6As shown, tilt detection components are provided at both ends of the lower pressure plate 6. High-intensity cameras 73 are also provided on both sides of the lower pressure plate 6. The high-intensity cameras 73 correspond to the tilt detection components, and both are connected to the control center signal. The tilt detection components include an extension plate 71 fixedly connected to the lower pressure plate 6, a laser rangefinder 72 fixedly connected to the lower end of the extension plate 71, and a tilt measuring optical tube 8 connected to the lower end of the extension plate 71 through an adaptive rod 9. The high-intensity camera 73 is also installed at the lower end of the extension plate 71, and the tilt measuring optical tube 8 is located between the laser rangefinder 72 and the high-intensity camera 73. The laser rangefinder 72 and the corresponding tilt measuring optical tube 8 are coaxially arranged so that when the extension plate 71 is in a horizontal state, the laser rangefinder 72 is synchronously horizontal, and the laser emitted by it can penetrate the axis of the tilt measuring optical tube 8. As the number of laminations increases, the tilt detection components are also connected to the control center signal. As the amplitude increases, the guide shaft 53 may accumulate tolerances due to wear during its back-and-forth passage through the upper heating plate 1. When the accumulated tolerance is too large, it will cause the lower pressure plate 6 to tilt, affecting the lamination quality. At this time, the extension plate 71 connected to it tilts synchronously, while the adaptive rod 9 remains vertically downward under the action of gravity. At this time, the coaxiality of the laser rangefinder 72 and the inclinometer tube 8 changes, preventing the laser from passing through the inclinometer tube 8. When the tilt amplitude is small, the laser will fall on the inner wall of the light-passing hole 801 after entering it. One side of the laser will fall on the inner wall of the inclinometer tube 8, causing local luminescence and color change on the upper surface of the inclinometer tube 8. This allows for immediate detection of abnormalities and corresponding maintenance and repair, reducing the impact on lamination and reducing the occurrence of rework or non-conforming products in subsequent batches.

[0050] like Figure 7 The adaptive rod 9 includes a positioning seat 92 fixedly connected to the extension plate 71 and a vertical end 91 fixedly connected to the middle of the inclinometer tube 8. The vertical end 91 and the positioning seat 92 are rotatably connected to each other. Through this rotatable connection, when the extension plate 71 tilts with the lower pressure plate 6, the position of the inclinometer tube 8 can be corrected under the action of gravity, and thus remain in a vertical state, realizing the change of its coaxiality with the laser rangefinder 72, so that the monitoring results will vary accordingly.

[0051] like Figure 8-9The inclinometer tube 8 includes a counterweight semi-column 81 and an inclinometer semi-column 82 fixedly connected to the upper end of the counterweight semi-column 81. A light-passing aperture 801 is formed at the center of the counterweight semi-column 81 and the inclinometer semi-column 82. The inner diameter of the light-passing aperture 801 is no greater than three times the diameter of the laser beam, ensuring that the aperture is not too large and thus does not affect the accuracy of the monitoring results. The inclinometer semi-column 82 includes multiple light-shielding layers 822 and multiple light-illuminating layers 821 respectively fixedly connected between adjacent light-shielding layers 822. The light-shielding layers 822 are made of opaque light-shielding material, and the light-illuminating layers 821 are made of transparent light-guiding material. When the inclinometer tube 8 is... When the laser rangefinder 72 is not on the same axis and the tilt amplitude is relatively large, the laser of the laser rangefinder 72 will have difficulty entering the inclinometer tube 8, or after entering the inclinometer tube 8, it can only irradiate the inside of the inclinometer tube 8 and cannot pass through the inclinometer tube 8. Furthermore, the laser beam on one side will irradiate a certain light-emitting layer 821 in the upper inner wall of the inclinometer tube 8. At this time, under its light-guiding effect, the corresponding light-emitting layer 821 will appear to change color and emit light. When the high-intensity camera 73 captures this phenomenon, it can be indicated that the lower pressure plate 6 is tilted due to the cumulative tolerance, and corresponding treatment needs to be carried out in time.

[0052] When the laser cannot penetrate the inclinometer tube 8, the data acquired by the laser rangefinder 72 will increase or decrease abnormally, showing a significant difference from the expected data that hits the glass plate. Based on the phenomenon at the inclinometer tube 8 and the data from the laser rangefinder 72, it is possible to detect whether the lower pressure plate 6 is tilted and the approximate tilt range.

[0053] Two laser rangefinders 72 are set off on opposite axes with a height difference between them. The laser beams emitted by the two laser rangefinders 72 correspond exactly to the upper and lower plates of the photovoltaic module to be laminated. The lower laser rangefinder 72 does not contact the upper surface of the lower heating plate 2 during lamination. This allows the laser beams emitted by the two laser rangefinders 72 to fall on the two glass plates respectively, thus enabling the monitoring of whether the glass plates move during lamination. This facilitates the timely removal of products with excessive relative movement, reduces the workload of subsequent product qualification inspection, and allows staff to detect abnormalities in a timely manner, reducing the continuous generation of abnormal laminated products.

[0054] A lamination method for a glue-free laminate structure of a solar photovoltaic module includes the following steps:

[0055] S1, such as Figure 4 First, control the upper heating plate 1 to move upward, opening the lamination chamber. At this time, first apply a dark coating to the edge of the photovoltaic module to be pressed, and then move the photovoltaic module to be pressed to the target position inside the lamination chamber, such as... Figure 1 Then, the upper heating plate 1 is reset to keep the lamination chamber sealed. The dark coating reduces the light transmittance of the glass plate, making it difficult for the laser to pass through the glass plate when it falls on it, thus making the data obtained by the laser rangefinder 72 relatively fixed.

[0056] S2. Start vacuuming to put the lamination chamber in a vacuum state, thereby melting the EVA adhesive in the photovoltaic module to be pressed, and squeezing out the air in the EVA adhesive and removing it from the lamination chamber.

[0057] S3. The bellows assembly 5 is extended by the electric cylinder 4 to gradually move the lower pressure plate 6 down and make it contact the photovoltaic module to be pressed. At this time, the tilt detection assembly is activated to detect whether the lower pressure plate 6 is tilted and to locate the relative position of the two glass plates of the photovoltaic module to be pressed. The initial distance of the two laser rangefinders 72 to the two glass plates of the photovoltaic module to be pressed is measured by the laser rangefinders 72.

[0058] S4, such as Figure 6-7 When the laser emitted by the laser rangefinder 72 can pass smoothly through the light aperture 801, and there is no local discoloration or luminescence on the inclinometer tube 8, it indicates that the lower pressure plate 6 is not tilted. Then, the electric cylinder 4 continues to push the bellows assembly 5, which in turn drives the lower pressure plate 6 to press the photovoltaic module to be pressed for lamination. During this process, the two laser rangefinders 72 monitor the distance between the two glass plates and the corresponding laser rangefinders 72 in real time and compare it with the initial distance. When the measured data is the same as the initial distance, it indicates that the lateral relative position of the two glass plates has not changed, and lamination continues. When lateral displacement occurs, it can be fed back to the control center in real time, so that the staff can repair it in time.

[0059] With the tilt detection component, the tilt of the lower pressure plate 6 can be monitored before lamination. This facilitates timely detection of tilting caused by the cumulative error from the vertical movement of the corrugated pipe assembly 5, thus effectively ensuring the uniformity of lamination. During lamination, real-time monitoring of the two glass plates in the photovoltaic module under lamination ensures the stability of the entire lamination process and timely detection of relative displacement between the two glass plates. This facilitates timely repairs in case of abnormalities and reduces the likelihood of batches of products being scrapped due to relative errors, thereby effectively ensuring a high yield rate. Considering current practical needs, the above-described embodiments adopted in this application are not limited to these specific embodiments. Various modifications made within the scope of knowledge possessed by those skilled in the art, without departing from the concept of this application, still fall within the protection scope of this invention.

Claims

1. A structure for a glueless laminate press for solar photovoltaic modules, characterized in that: The system includes a lower heating plate (2) fixedly connected to the laminator, an upper heating plate (1) with a control center above the lower heating plate (2), two electric cylinders (4) at the upper end of the upper heating plate (1), the electric cylinders (4) being fixedly connected to the laminator, a pressure strip (3) at the lower edge of the upper heating plate (1), the pressure strip (3) being fixedly connected to the upper heating plate (1) by a linkage seat (102) and bolts, and sealing rings embedded on both the upper and lower surfaces of the pressure strip (3), the sealing rings being pressed into contact with the upper heating plate (1), and when pressed... When the strip (3) contacts the lower heating plate (2), the upper heating plate (1), the lower heating plate (2) and the pressure strip (3) together form a lamination cavity. Multiple upper heating plates (101) and multiple lower heating plates (201) are respectively installed on the end faces of the upper heating plate (1) and the lower heating plate (2) that are far apart from each other. A bellows assembly (5) is fixedly connected below the two electric cylinders (4). The bellows assembly (5) moves through the upper heating plate (1) and extends into the lamination cavity. The lower ends of the two bellows assemblies (5) are fixedly connected to a lower pressure plate (6). The bellows assembly (5) includes three guide shafts (53) that are fixedly connected to the extended ends of the electric cylinder (4), a lower positioning plate (55) fixedly connected to the lower ends of the three guide shafts (53), an upper positioning plate (51) fixed to the middle of the lower end of the upper heating plate (1) by bolts, and a bellows (52) fixedly connected between the upper positioning plate (51) and the guide shafts (53). The multiple guide shafts (53) sequentially move through the upper heating plate (1) and the upper positioning plate (51) and are located inside the bellows (52). The upper end of the upper positioning plate (51) is also fixedly inlaid with a sealing ring, and the sealing ring is in contact with the lower end of the upper heating plate (1). The lower pressure plate (6) is provided with tilt detection components at both ends. The lower pressure plate (6) is also provided with high-intensity cameras (73) on both sides. The high-intensity cameras (73) correspond to the tilt detection components, and both are connected to the control center signal. The tilt detection assembly includes an extension plate (71) fixedly connected to the lower pressure plate (6), a laser rangefinder (72) fixedly connected to the lower end of the extension plate (71), and a tilt measuring tube (8) connected to the lower end of the extension plate (71) via an adaptive rod (9). The high-intensity camera (73) is also installed at the lower end of the extension plate (71), and the tilt measuring tube (8) is located between the laser rangefinder (72) and the high-intensity camera (73). The laser rangefinder (72) and the corresponding tilt measuring tube (8) are coaxially arranged. The two laser rangefinders (72) are set on different axes, and there is a height difference between them. The laser beams emitted by the two laser rangefinders (72) correspond to the upper and lower plates of the photovoltaic module to be pressed. The lower laser rangefinder (72) does not contact the upper surface of the lower heating plate (2) during lamination.

2. The structure of a glueless laminate press for solar photovoltaic modules according to claim 1, characterized in that: The outer ends of the three guide shafts (53) are all fitted with guide copper sleeves (54), the guide copper sleeves (54) are fixedly connected to the upper heating plate (1), and the inner wall of the guide copper sleeves (54) is fixedly inlaid with a self-lubricating graphite layer.

3. The structure of a glueless laminate press for solar photovoltaic modules according to claim 1, characterized in that: The adaptive rod (9) includes a positioning seat (92) fixedly connected to the extension plate (71) and a vertical end (91) fixedly connected to the middle of the inclinometer tube (8). The vertical end (91) and the positioning seat (92) are rotatably connected to each other.

4. The structure of a glueless laminate press for solar photovoltaic modules according to claim 3, characterized in that: The inclinometer tube (8) includes a counterweight half-column (81) and an inclinometer half-column (82) fixedly connected to the upper end of the counterweight half-column (81). The center of the counterweight half-column (81) and the inclinometer half-column (82) forms a light-passing hole (801). The inner diameter of the light-passing hole (801) is no more than 3 times the diameter of the laser beam.

5. The structure of a glueless laminate press for solar photovoltaic modules according to claim 4, characterized in that: The inclinometer semi-column (82) includes multiple light-shielding layers (822) and multiple light-revealing layers (821) that are fixedly connected between two adjacent light-shielding layers (822). The light-shielding layers (822) are made of opaque light-shielding material, and the light-revealing layers (821) are made of transparent light-guiding material.

6. A method for laminating adhesive-free solar photovoltaic modules, characterized in that: Lamination using the laminator structure described in claims 1-5 includes the following steps: S1. First, control the upper heating plate (1) to move upward so that the lamination chamber is opened. At this time, first coat the edge of the photovoltaic module to be pressed with a dark coating, then move the photovoltaic module to be pressed to the target position in the lamination chamber, and then control the upper heating plate (1) to reset so that the lamination chamber is in a sealed state. S2. Start vacuuming to put the lamination chamber in a vacuum state, thereby melting the EVA adhesive in the photovoltaic module to be pressed, and squeezing out the air in the EVA adhesive and removing it from the lamination chamber. S3. The bellows assembly (5) is extended by the electric cylinder (4) so ​​that the lower pressure plate (6) gradually moves down and contacts the photovoltaic module to be pressed. At this time, the tilt detection assembly is turned on to detect whether the lower pressure plate (6) is tilted, and to locate the relative position of the two glass plates of the photovoltaic module to be pressed. S4. When the tilt detection component detects that the lower pressure plate (6) is not tilted, the bellows component (5) is pushed by the electric cylinder (4) to drive the lower pressure plate (6) to press the photovoltaic module to be pressed for lamination. During this process, the tilt detection component monitors the relative position of the two glass plates in real time. When the lateral relative position of the two does not change, lamination continues. When lateral displacement occurs, it can be fed back to the control center in real time, so that the staff can repair it in time.

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