Photovoltaic module laminating method and photovoltaic module
By adjusting the pressure of the laminator in stages, the problem of the photovoltaic module being stuck in the discharge platform was solved, avoiding the problems of glue overflow and warping, and improving the quality of the module.
Patent Information
- Application Number
- CN202511666149.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-02-24
AI Technical Summary
During the lamination process of photovoltaic modules, when the material discharge platform becomes clogged, the modules are exposed to a high temperature and high pressure environment for a long time, which can easily lead to phenomena such as glue overflow, bubbles, and warping.
By evacuating the upper chamber of the laminator in stages and filling the lower chamber with air, the pressure on the photovoltaic modules is gradually reduced, preventing the modules from being subjected to high pressure for a long time while waiting for material to be discharged.
It effectively avoids the generation of excess glue and bubbles, smooths out the warping problem of module glass under high temperature environment, and ensures the quality of module.
Smart Images
Figure CN121568448A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of photovoltaic module manufacturing technology, and in particular to photovoltaic module lamination methods and photovoltaic modules. Background Technology
[0002] Photovoltaic modules are the core components of solar power generation systems. A photovoltaic module consists of a stacked back glass, a back encapsulating film, a cell string, a front encapsulating film, and a front glass. During the manufacturing process, the photovoltaic module is subjected to high-temperature lamination using a laminator, causing the back encapsulating film and the front encapsulating film to fuse together and encapsulate the back glass, cell string, and front glass.
[0003] In a normal lamination process, after the photovoltaic modules are laminated, the laminator opens its lid and transfers the laminated photovoltaic modules to the next process via the discharge platform. However, when the discharge platform becomes clogged, the laminator cannot discharge the laminated modules in a timely manner. This causes the modules to remain in the high-temperature and high-pressure environment inside the laminator for an extended period, which can easily lead to problems such as glue overflow, air bubbles, and warping. Summary of the Invention
[0004] Therefore, it is necessary to provide a photovoltaic module lamination method and a photovoltaic module to address the problem of preventing the "steaming" phenomenon during the photovoltaic module lamination process.
[0005] A photovoltaic module lamination method includes the following steps:
[0006] S110: The photovoltaic modules are fed into the laminator for lamination;
[0007] S120: Detect whether the discharge platform is blocked;
[0008] S130: If so, the upper chamber of the laminator is evacuated in stages, and the lower chamber of the laminator is filled with air to gradually reduce the pressure of the laminate on the photovoltaic module.
[0009] S140: Discharge the photovoltaic modules to the discharge platform.
[0010] In the aforementioned photovoltaic module lamination method and photovoltaic module, when material blockage occurs on the discharge platform, the upper chamber of the laminator is evacuated in stages, while the lower chamber is inflated. This allows the laminator to gradually rise and leave the photovoltaic module, thereby gradually reducing the pressure exerted by the laminator on the photovoltaic module. This prevents the photovoltaic module from being subjected to prolonged high-pressure compression by the laminator while waiting for material discharge, thus avoiding the overflow of the adhesive film from the edges of the photovoltaic module caused by prolonged high pressure, and preventing the formation of adhesive overflow or bubbles. Furthermore, compared to releasing the pressure of the laminator on the photovoltaic module all at once in a short period, this application gradually reduces the pressure of the laminator on the photovoltaic module in stages. During this process, the warping problem of the photovoltaic module glass caused by high temperature environments can be smoothed out, avoiding warping problems caused by insufficient pressure in high-temperature environments. In summary, the photovoltaic module lamination method of this application can effectively prevent the photovoltaic module from experiencing a "cooking" phenomenon when material blockage occurs on the discharge platform.
[0011] The technical solution will be further explained below:
[0012] In one embodiment, the step of evacuating the upper chamber of the laminator in stages includes:
[0013] The upper chamber of the laminator is evacuated in multiple stages, with each stage lasting for a certain period of time.
[0014] In one embodiment, the step of evacuating the upper chamber of the laminator in stages includes:
[0015] The upper chamber of the laminator is evacuated in three stages, wherein:
[0016] First stage: Bring the upper chamber to a first pressure and maintain it for a first time period;
[0017] Second stage: The upper chamber is brought to a second pressure and maintained for a second time period;
[0018] The third stage: bringing the upper chamber to the third pressure and maintaining it for the third time period.
[0019] In one embodiment, the first pressure is -50 kPa to -5 kPa, and the first time period is 20 s to 180 s.
[0020] The second pressure is -110 kPa to -50 kPa, and the first time period is 30 s to 180 s;
[0021] The third pressure is -50 kPa to 110 kPa, and the first time period is 20 s to 180 s.
[0022] In one embodiment, step S120 is followed by:
[0023] If not, proceed directly to step S140.
[0024] In one embodiment, step S110 includes:
[0025] S111: Send the photovoltaic modules into the lower chamber of the laminator;
[0026] S112: Evacuate the upper and lower chambers of the laminator;
[0027] S113: The upper chamber of the laminator is inflated while the lower chamber is continuously evacuated, so that the laminator applies pressure to the photovoltaic module to enter the lamination stage.
[0028] In one embodiment, step S112 includes:
[0029] The vacuuming time for the upper and lower chambers of the laminator is 0–360 s, so that the pressure in the upper and lower chambers is less than 200 Pa.
[0030] In one embodiment, step S113 includes:
[0031] The duration of the lamination stage is 120s to 520s, and the pressure in the upper chamber is -40kPa to -5kPa.
[0032] In one embodiment, step S140 includes:
[0033] S141: Evacuate the upper chamber and fill the lower chamber with air to atmospheric pressure;
[0034] S142: Open the cover of the laminator and send the photovoltaic module to the discharge platform.
[0035] Secondly, this application provides a photovoltaic module manufactured using the aforementioned photovoltaic module lamination method.
[0036] The aforementioned photovoltaic module employs the aforementioned photovoltaic module lamination method. When material blockage occurs on the discharge platform, the upper chamber of the laminator is evacuated in stages, while the lower chamber is inflated. This allows the laminator to gradually rise and separate from the photovoltaic module, thereby gradually reducing the pressure exerted by the laminator on the photovoltaic module. This prevents the photovoltaic module from being subjected to prolonged high-pressure compression by the laminator while waiting for material discharge, thus avoiding the overflow of the adhesive film from the edges of the photovoltaic module caused by prolonged high pressure, and preventing the formation of adhesive overflow or bubbles. Furthermore, compared to releasing the pressure of the laminator on the photovoltaic module all at once in a short period, this application gradually reduces the pressure of the laminator on the photovoltaic module in stages. During this process, the warping problem of the photovoltaic module glass caused by high-temperature environments can be smoothed out, avoiding warping problems caused by insufficient pressure in high-temperature environments. In summary, the photovoltaic module lamination method of this application can effectively prevent the photovoltaic module from experiencing a "cooking" phenomenon when material blockage occurs on the discharge platform. Attached Figure Description
[0037] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.
[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.
[0039] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:
[0040] Figure 1 This is a schematic diagram of a laminator according to one embodiment.
[0041] Figure 2 This is a flowchart of a photovoltaic module lamination method according to one embodiment.
[0042] Explanation of reference numerals in the attached figures:
[0043] 21. Heating plate; 22. Cover; 23. Laminate; 24. Discharge platform; 251. Upper chamber; 252. Lower chamber; 30. Photovoltaic module. Detailed Implementation
[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0045] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0046] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0047] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0048] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0049] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0050] First, to facilitate understanding of the photovoltaic module lamination method in this application, a brief introduction to the basic structure of the laminator will be given. Specifically, please refer to... Figure 1 , Figure 1 The structure of a laminator according to one embodiment of this application is shown. The laminator of one embodiment includes a high-temperature cloth (not shown), a heating plate 21, a laminating plate 23, a cover 22, and a discharge platform 24. The high-temperature cloth is used to carry and transport photovoltaic modules 30. The heating plate 21 is used to heat the photovoltaic modules 30 on the high-temperature cloth. The cover 22 is closable and covers the heating plate 21, together forming a lamination chamber. The laminating plate 23 is disposed on the cover 22 and divides the lamination chamber into an upper chamber 251 and a lower chamber 252. The discharge platform 24 is disposed on the discharge side of the lamination chamber and is used to transport the laminated photovoltaic modules 30 to the next process.
[0051] For example, in the normal lamination process, the high-temperature cloth first conveys the photovoltaic module 30 onto the heating plate 21, and then the cover 22 is closed. Then, the upper chamber 251 and the lower chamber 252 are simultaneously evacuated. After evacuation, the lamination stage begins. During lamination, the upper chamber 251 is inflated while the lower chamber 252 is continuously evacuated, creating a pressure difference between them. The laminating plate 23 deforms and applies pressure to the photovoltaic module 30. Simultaneously, the heating plate 21 heats the photovoltaic module 30. After lamination is complete, the pressure in the lamination chamber is released until it returns to atmospheric pressure. Then, the cover 22 is opened, and the high-temperature cloth conveys the photovoltaic module 30 to the discharge platform 24, which then sends the laminated photovoltaic module 30 to the next process.
[0052] However, as described in the background section, in the current lamination process, when material blockage occurs on the discharge platform 24, the photovoltaic module 30 needs to remain in the lamination chamber to wait for discharge. During this process, the photovoltaic module 30 is exposed to the high temperature and high pressure environment of the lamination chamber for a long time, which easily leads to phenomena such as glue overflow, bubbles, and warping. The inventors, through creative research, discovered that the reason is that when the photovoltaic module 30 is in the high temperature and high pressure environment of the lamination chamber, the internal encapsulating film is in a molten and flowable state. Prolonged high temperature and high pressure cause the film to overflow from the edges of the photovoltaic module 30, resulting in glue overflow. After the film overflows, other areas will experience glue shortages, and bubbles will form in these areas. Simultaneously, the glass of the photovoltaic module 30 will also warp under prolonged high temperatures.
[0053] Based on this, one embodiment of this application provides a photovoltaic module lamination method, including the following steps:
[0054] S110: The photovoltaic module 30 is fed into the laminator for lamination;
[0055] Specifically, in one embodiment, the photovoltaic module 30 can be fed into the lower chamber 252 of the lamination chamber of the laminator using a high-temperature cloth or conveyor belt. Then, the upper chamber 251 and lower chamber 252 are simultaneously evacuated. After evacuation, the lamination stage begins. During lamination, the upper chamber 251 is inflated while the lower chamber 252 is continuously evacuated, creating a pressure difference between them. This causes the laminating plate 23 to deform and press against the photovoltaic module 30. Simultaneously, the heating plate 21 heats the photovoltaic module 30, melting the front and back adhesive films within the photovoltaic module 30 to bond the front glass, battery strings, and back glass together as a single unit.
[0056] S120: Detect whether the discharge platform 24 is blocked;
[0057] For example, a photoelectric sensor can be used to detect whether there is a photovoltaic module 30 or other material obstructing the discharge platform 24. If there is obstruction, it is determined that the discharge platform 24 is blocked. If there is no obstruction, it is determined that the discharge platform 24 is not blocked.
[0058] S130: If so, the upper chamber 251 of the laminator is evacuated in stages, and the lower chamber 252 of the laminator is filled with air to gradually reduce the pressure of the laminate 23 on the photovoltaic module 30.
[0059] Specifically, when material blockage occurs on the discharge platform 24, the laminator cannot discharge the photovoltaic module 30 to the discharge platform 24 in time. The photovoltaic module 30 needs to remain in the high-temperature and high-pressure lamination chamber to wait for discharge, which can easily lead to a "cooking up" phenomenon. At this time, by evacuating the upper chamber 251 of the laminator in stages and inflating the lower chamber 252 of the laminator, the pressure difference between the upper chamber 251 and the lower chamber 252 can be reduced, allowing the laminating plate 23 to gradually rise away from the photovoltaic module 30, thereby gradually reducing the pressure of the laminating plate 23 on the photovoltaic module 30.
[0060] S140: Discharge the photovoltaic module 30 to the discharge platform 24.
[0061] Specifically, after the discharge platform 24 is cleared, the laminator opens the cover 22, and the high-temperature cloth transports the laminated photovoltaic module 30 to the discharge platform 24, which then sends the laminated photovoltaic module 30 to the next process.
[0062] In the aforementioned photovoltaic module lamination method, when material blockage occurs on the discharge platform 24, the upper chamber 251 of the laminator is evacuated in stages, and the lower chamber 252 of the laminator is inflated. This allows the laminator plate 23 to gradually rise away from the photovoltaic module 30, thereby gradually reducing the pressure of the laminator plate 23 on the photovoltaic module 30. This avoids the photovoltaic module 30 being subjected to high-pressure extrusion from the laminator plate 23 for an extended period while waiting for material discharge, thus preventing the adhesive film from overflowing from the edges of the photovoltaic module 30 due to prolonged high pressure, and consequently avoiding the generation of adhesive overflow or bubbles. Furthermore, compared to releasing the pressure of the laminator plate 23 on the photovoltaic module 30 all at once in a short period, this application gradually reduces the pressure of the laminator plate 23 on the photovoltaic module 30 in stages. During this process, the warping problem of the glass in the photovoltaic module 30 caused by high temperature environment can be smoothed out, avoiding the warping problem caused by lack of pressure in the glass of the photovoltaic module 30 at high temperature. In summary, the photovoltaic module lamination method of this application can effectively prevent the photovoltaic module 30 from becoming stuck when material blockage occurs on the discharge platform 24.
[0063] See also Figure 2 In some embodiments, after step S120: detecting whether the discharge platform 24 is blocked, the method further includes:
[0064] If not, proceed directly to step S140.
[0065] Specifically, when it is detected that there is no blockage on the discharge platform 24, that is, the laminator can discharge material according to the normal process, the laminator opens the cover and discharges the photovoltaic module 30 to the discharge platform 24. Specifically, the lamination chamber is first restored to atmospheric pressure, then the cover 22 is opened, and the high-temperature cloth transports the photovoltaic module 30 to the discharge platform 24, and the discharge platform 24 sends the laminated photovoltaic module 30 to the next process.
[0066] Specifically, in some embodiments, the step of evacuating the upper chamber 251 of the laminator in stages includes:
[0067] The upper chamber 251 of the laminator is evacuated in multiple stages, with each stage lasting for a certain period of time.
[0068] Specifically, by evacuating the upper chamber 251 of the laminator in multiple stages, with each stage lasting for a certain period of time, the pressure of the laminate 23 on the photovoltaic module 30 can be gradually reduced. This avoids the problem of glass warping in the photovoltaic module 30 caused by releasing the pressure of the laminate 23 on the photovoltaic module 30 all at once in a short period of time, and further improves the lamination quality of the photovoltaic module 30.
[0069] Specifically, in some embodiments, the step of evacuating the upper chamber 251 of the laminator in stages includes: evacuating the upper chamber 251 of the laminator in three stages, wherein:
[0070] Phase 1: Bring the upper chamber 251 to the first pressure and maintain it for the first time period;
[0071] For example, in some embodiments, the first pressure is -50 kPa to -5 kPa, such as -50 kPa, -40 kPa, -30 kPa, -20 kPa, -5 kPa, etc. The first time period is 20 s to 180 s; for example, 20 s, 50 s, 80 s, 120 s, 150 s, or 180 s, etc. Specifically, in the lamination stage, the pressure of the upper chamber 251 is -40 to -5 kPa. By configuring the pressure of the upper chamber 251 to -50 kPa to -5 kPa in the first stage and maintaining it for 20 s to 180 s, the pressure of the laminate 23 on the photovoltaic module 30 can be initially reduced, avoiding the occurrence of a "cooking overheating" phenomenon.
[0072] Second stage: Bring the upper chamber 251 to the second pressure and maintain it for the second time period;
[0073] For example, in some embodiments, the second pressure is -110 kPa to -50 kPa, such as -110 kPa, -80 kPa, -70 kPa, -60 kPa, -50 kPa, etc. The second time period is 30 s to 180 s; for example, 30 s, 50 s, 80 s, 120 s, 150 s, or 180 s, etc. By configuring the pressure of the upper chamber 251 to -110 kPa to -50 kPa in the second stage and maintaining it for 30 s to 180 s, the pressure of the laminate 23 on the photovoltaic module 30 can be further reduced, and the "cooking up" phenomenon can be further avoided.
[0074] Phase 3: Bring the upper chamber 251 to the third pressure and continue for the third time period.
[0075] Specifically, in some embodiments, the third pressure is -50 kPa to 110 kPa, for example, -50 kPa, -30 kPa, 30 kPa, 60 kPa, 80 kPa, -110 kPa, etc. The third time period is 20 s to 180 s; for example, 20 s, 50 s, 80 s, 120 s, 150 s, or 180 s, etc. Specifically, in the third stage, when the gas in the upper chamber 251 is completely extracted and the lower chamber 252 is continuously filled with gas, the gas pressure in the upper chamber 251 and the lower chamber 252 will return to atmospheric pressure. At this time, the laminate 23 is completely separated from the photovoltaic module 30, and the conditions for opening the cover are met.
[0076] Optionally, in some embodiments, step S110 includes:
[0077] S111: Send the photovoltaic module 30 into the lower chamber 252 of the laminator;
[0078] Specifically, the photovoltaic module 30 can be fed into the lower chamber 252 of the lamination chamber of the laminator via a high-temperature cloth or conveyor belt.
[0079] S112: Evacuate the upper chamber 251 and lower chamber 252 of the laminator;
[0080] Specifically, the vacuuming time for the upper chamber 251 and lower chamber 252 of the laminator is 0s to 360s, so that the pressure in the upper chamber 251 and lower chamber 252 is less than 200pa. By vacuuming the upper chamber 251 and lower chamber 252, air inside the photovoltaic module 30 can be effectively extracted, preventing air bubbles from forming inside the photovoltaic module 30 during subsequent lamination processes.
[0081] S113: The upper chamber 251 of the laminator is inflated with air, while the lower chamber 252 is continuously evacuated, so that the laminator 23 applies pressure to the photovoltaic module 30 to enter the lamination stage.
[0082] Specifically, in some embodiments, the laminate 23 is a silicone sheet. By inflating the upper chamber 251 and continuously evacuating the lower chamber 252 during the lamination stage, a pressure difference is generated between the upper chamber 251 and the lower chamber 252, which drives the laminate 23 to deform and apply pressure to the photovoltaic module 30, ensuring that the molten adhesive film inside the photovoltaic module 30 can bond the front glass, the battery string and the back glass together under pressure.
[0083] Furthermore, the duration of the lamination stage is 120s to 520s, for example, 120s, 200s, 300s, 500s and 520s, and the pressure of the upper chamber 251 is -40kpa to -5kpa, for example -40kpa, -30kpa, -20kpa or -5kpa, etc., so as to ensure that the molten encapsulant film inside the photovoltaic module 30 can fully bond the front glass, the cell string and the back glass together, thereby achieving the encapsulation of the cell string.
[0084] Optionally, in some embodiments, step S140: opening the laminator and discharging the photovoltaic module 30 to the discharge platform 24 includes:
[0085] S141: Evacuate the upper chamber 251 and fill the lower chamber 252 with gas to atmospheric pressure;
[0086] Specifically, by evacuating the upper chamber 251 and filling the lower chamber 252 with air to atmospheric pressure, the air pressure inside and outside the cover 22 is the same before opening the cover, thus ensuring the safety of opening the cover.
[0087] S142: Open the cover 22 of the laminator and send the photovoltaic module 30 to the discharge platform 24.
[0088] Specifically, the cover 22 can be lifted by a lifting mechanism, and then the high-temperature cloth will transport the photovoltaic module 30 to the discharge platform 24, which will then transport the photovoltaic module 30 to the next process.
[0089] An embodiment of this application also provides a photovoltaic module 30, specifically, the photovoltaic module 30 is manufactured using the photovoltaic module lamination method of any of the above embodiments.
[0090] The photovoltaic module 30 is manufactured using the aforementioned photovoltaic module lamination method. In this method, when material blockage occurs on the discharge platform 24, the upper chamber 251 of the laminator is evacuated in stages, and the lower chamber 252 is inflated. This allows the laminator plate 23 to gradually rise away from the photovoltaic module 30, thereby gradually reducing the pressure of the laminator plate 23 on the photovoltaic module 30. This prevents the photovoltaic module 30 from being subjected to high pressure from the laminator plate 23 for an extended period while waiting for material discharge, thus preventing the adhesive film from overflowing from the edges of the photovoltaic module 30 due to prolonged high pressure, and consequently preventing the formation of adhesive overflow or bubbles. Furthermore, compared to releasing the pressure of the laminator plate 23 on the photovoltaic module 30 all at once in a short period, this application gradually reduces the pressure of the laminator plate 23 on the photovoltaic module 30 in stages. During this process, the warping problem of the glass in the photovoltaic module 30 caused by high temperature environments can be smoothed out, avoiding the warping problem caused by insufficient pressure in high-temperature environments. In summary, the photovoltaic module lamination method of this application can effectively prevent the photovoltaic module 30 from becoming stuck when material blockage occurs on the discharge platform 24.
[0091] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0092] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A photovoltaic module lamination method, characterized in that, Includes the following steps: S110: The photovoltaic modules are fed into the laminator for lamination; S120: Detect whether the discharge platform is blocked; S130: If so, the upper chamber of the laminator is evacuated in stages, and the lower chamber of the laminator is filled with air to gradually reduce the pressure of the laminate on the photovoltaic module. S140: Discharge the photovoltaic modules to the discharge platform.
2. The photovoltaic module lamination method according to claim 1, characterized in that, The step of evacuating the upper chamber of the laminator in stages includes: The upper chamber of the laminator is evacuated in multiple stages, with each stage lasting for a certain period of time.
3. The photovoltaic module lamination method according to claim 1, characterized in that, The step of evacuating the upper chamber of the laminator in stages includes: The upper chamber of the laminator is evacuated in three stages, wherein: First stage: Bring the upper chamber to a first pressure and maintain it for a first time period; Second stage: The upper chamber is brought to a second pressure and maintained for a second time period; The third stage: bringing the upper chamber to the third pressure and maintaining it for the third time period.
4. The photovoltaic module lamination method according to claim 3, characterized in that: The first pressure is -50 kPa to -5 kPa, and the first time period is 20 s to 180 s; The second pressure is -110 kPa to -50 kPa, and the first time period is 30 s to 180 s; The third pressure is -50 kPa to 110 kPa, and the first time period is 20 s to 180 s.
5. The photovoltaic module lamination method according to claim 1, characterized in that, Step S120 is followed by: If not, proceed directly to step S140.
6. The photovoltaic module lamination method according to claim 1, characterized in that, Step S110 includes: S111: Send the photovoltaic modules into the lower chamber of the laminator; S112: Evacuate the upper and lower chambers of the laminator; S113: The upper chamber of the laminator is inflated while the lower chamber is continuously evacuated, so that the laminator applies pressure to the photovoltaic module to enter the lamination stage.
7. The photovoltaic module lamination method according to claim 6, characterized in that, Step S112 includes: The vacuuming time for the upper and lower chambers of the laminator is 0–360 s, so that the pressure in the upper and lower chambers is less than 200 Pa.
8. The photovoltaic module lamination method according to claim 6, characterized in that, Step S113 includes: The duration of the lamination stage is 120s to 520s, and the pressure in the upper chamber is -40kPa to -5kPa.
9. The photovoltaic module lamination method according to claim 1, characterized in that, Step S140 includes: S141: Evacuate the upper chamber and fill the lower chamber with air to atmospheric pressure; S142: Open the cover of the laminator and send the photovoltaic module to the discharge platform.
10. A photovoltaic module, characterized in that, It is manufactured using the photovoltaic module lamination method described in any one of claims 1-9.