A photovoltaic module

Abstract

The application relates to the technical field of photovoltaic devices, and provides a photovoltaic module which comprises a main body, a sealing adhesive layer and a support. The main body comprises glass, a front adhesive film, a cell layer, a back adhesive film and a back plate which are arranged in a stack from bottom to top. The sealing adhesive layer is arranged between the glass and the back plate and circumferentially arranged at the periphery of the front adhesive film, the cell layer and the back adhesive film. The support is supported between the glass and the back plate and arranged inside the sealing adhesive layer and / or at the inner circumferential side of the sealing adhesive layer and / or at the outer circumferential side of the sealing adhesive layer. In the lamination process, the support can bear part of the pressure of the sealing adhesive layer, support the spacing between the glass and the back plate in the area, so that the compression amount of the sealing adhesive layer can be controlled within a set range, the sealing adhesive layer is prevented from being excessively squeezed out, quality defects such as edge adhesive deficiency and bubbles are reduced, and the sealing reliability is improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic equipment technology, and in particular to a photovoltaic module. Background Technology

[0002] Photovoltaic modules are typically manufactured by laminating materials such as glass, encapsulant film, solar cells, and backsheets, followed by hot pressing. To protect the solar cells from external moisture, a sealant layer, such as butyl rubber, is usually applied to the edges of the module for circumferential sealing.

[0003] In single-glass photovoltaic modules, the asymmetrical material properties of the top and bottom sides—one side being rigid glass and the other a flexible backsheet—lead to uneven pressure distribution at the module's edges under the high temperature and pressure of the laminator, easily forming pressure concentration zones. These pressure concentration zones cause the sealant layer to be excessively compressed before curing, resulting in an actual sealant layer thickness significantly less than the design value. In severe cases, defects such as localized missing sealant or bubbles may occur, affecting the module's long-term sealing reliability and lifespan. Summary of the Invention

[0004] Based on this, the present invention provides a photovoltaic module to solve the problem that the sealant layer is easily over-compressed during the lamination of photovoltaic modules in the prior art, resulting in the final thickness of the sealant layer being less than the design value, or even defects such as local missing sealant and bubbles.

[0005] The present invention provides a photovoltaic module comprising:

[0006] The main body includes glass, front adhesive film, battery layer, back adhesive film and back panel stacked from bottom to top;

[0007] A sealant layer is disposed between the glass and the back plate, and is circumferentially arranged around the front adhesive film, the battery layer and the back adhesive film;

[0008] A support member is provided between the glass and the back plate, and is disposed inside the sealant layer and / or on the inner circumferential side and / or on the outer circumferential side of the sealant layer.

[0009] In one embodiment, the support is a rigid or semi-rigid structure.

[0010] In one embodiment, the support is located between the back plate and the glass, and the thickness of the support matches the thickness of the pre-set sealant layer after lamination.

[0011] In one embodiment, the support member is at least partially located on the outer peripheral side of the sealant layer and extends along the outer peripheral side of the sealant layer; and / or

[0012] The support member is at least partially located on the inner circumferential side of the sealant layer and extends along the inner circumferential side of the sealant layer; and / or

[0013] The support member is at least partially embedded within the sealant layer and extends along the contour of the sealant layer.

[0014] In one embodiment, the support is continuous along the extension direction of the sealant layer; or

[0015] The support member is discontinuous along the extension direction of the sealant layer.

[0016] In one embodiment, the support member is at least partially located on the outer periphery of the sealant layer, and the portion of the support member located on the outer periphery of the sealant layer is provided with a channel penetrating through the inside and outside.

[0017] In one embodiment, the support member is at least partially located on the outer periphery of the sealant layer, and the portion of the support member located on the outer periphery of the sealant layer is provided with an extension portion that extends in the thickness direction toward the surface of the glass away from the front adhesive film and is flush with the surface of the glass away from the front adhesive film.

[0018] In one embodiment, the support member is at least partially disposed on the outer periphery of the sealant layer and integrally formed with the back plate.

[0019] In one embodiment, the support members are disposed inside the sealant layer, and multiple support members are spaced apart along the direction from the battery layer to the sealant layer.

[0020] In one embodiment, the support includes an inner support portion located on the inner periphery of the sealant layer, an outer support portion located on the outer periphery of the sealant layer, and a connecting portion embedded inside the sealant layer and connecting the inner support portion and the outer support portion respectively.

[0021] In one embodiment, the surface of the backplate facing the back adhesive film, for bonding with the sealant layer, is provided with grooves and / or protrusions; and / or

[0022] The support member has grooves and / or protrusions formed on the surface facing the sealant layer.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] The aforementioned photovoltaic modules, by adding support components in or around the area where the sealant layer is located, allow the support components to act as physical limits during the lamination process. These support components bear part of the pressure between the glass and the backsheet or part of the downward pressure from the lamination equipment, thereby supporting the gap between the glass and the backsheet in the area where the sealant layer is located. This ensures that the compression of the sealant layer can be controlled within a set range, preventing it from being excessively squeezed out. This ensures that the thickness after lamination reaches the design value, thereby significantly reducing quality defects such as missing sealant at the edges of the photovoltaic modules and air bubbles in the sealant layer, and improving the sealing reliability and long-term service life of the photovoltaic modules. Attached Figure Description

[0025] Figure 1 This is a partial cross-sectional view of a photovoltaic module in the prior art;

[0026] Figure 2 This is a partial cross-sectional view of a photovoltaic module according to one embodiment of the present invention;

[0027] Figure 3 This is a partial cross-sectional view of a photovoltaic module according to another embodiment of the present invention;

[0028] Figure 4 This is a partial cross-sectional view of a photovoltaic module in another embodiment of the present invention;

[0029] Figure 5 for Figure 4 Left view of the photovoltaic module shown;

[0030] Figure 6 for Figure 3 Left view of the photovoltaic module shown;

[0031] Figure 7 This is a top view of a photovoltaic module after the backsheet has been removed, according to one embodiment of the present invention.

[0032] Figure 8 This is a partial cross-sectional view of a photovoltaic module according to one embodiment of the present invention;

[0033] Figure 9 This is a partial cross-sectional view of a photovoltaic module according to one embodiment of the present invention;

[0034] Figure 10 This is a partial cross-sectional view of a photovoltaic module according to one embodiment of the present invention;

[0035] Figure 11 This is a partial cross-sectional view of a photovoltaic module according to one embodiment of the present invention;

[0036] Figure 12 This is a partial cross-sectional view of a photovoltaic module according to one embodiment of the present invention;

[0037] Figure 13This is a partial cross-sectional view of a photovoltaic module according to one embodiment of the present invention.

[0038] The reference numerals in the accompanying drawings include: 100-main body; 110-glass; 120-front adhesive film; 130-battery layer; 140-back adhesive film; 150-back plate; 151-bending part; 160-laminated assembly; 200-sealing layer; 300-support member; 310-overflow hole; 320-extension part; 330-inner support part; 340-outer support part; 350-connecting part. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0040] In existing technologies, such as Figure 1 As shown, to protect the solar cells from external moisture corrosion, a sealant layer 200 is typically provided at the edge of the photovoltaic module, such as butyl rubber, for circumferential sealing. However, during the lamination process, the sealant layer 200 softens under high temperature and pressure. Compared to other parts of the photovoltaic module, this area lacks sufficient structural support, making it prone to forming pressure concentration zones at the edge of the photovoltaic module. These pressure concentration zones cause the sealant layer 200 to be excessively compressed before curing, resulting in an actual thickness of the edge sealant layer 200 that is significantly less than the design value. In severe cases, defects such as localized missing sealant and bubbles may occur, thereby affecting the long-term sealing reliability and service life of the photovoltaic module.

[0041] In order to solve the problem caused by excessive compression of the sealant layer 200, and to improve the uniformity, density and overall reliability of the laminated sealant layer 200 and the final component, this embodiment of the invention provides a photovoltaic module.

[0042] Figures 2 to 13 A schematic diagram of a photovoltaic module provided by an embodiment of the present invention is shown. For example... Figures 2 to 13 As shown, the photovoltaic module includes a main body 100, a sealant layer 200, and a support member 300. The main body 100 includes glass 110, a front encapsulant film 120, a cell layer 130, a back encapsulant film 140, and a backsheet 150 stacked from bottom to top. The sealant layer 200 is disposed between the glass 110 and the backsheet 150, and is circumferentially arranged around the periphery of the front encapsulant film 120, the cell layer 130, and the back encapsulant film 140. The support member 300 is disposed inside the sealant layer 200 and / or on the inner circumferential side and / or on the outer circumferential side of the sealant layer 200.

[0043] In the photovoltaic module of the above embodiment, by adding a support member 300 in the area or surrounding area of ​​the sealant layer 200, the support member 300 can act as a physical limit during the lamination process, bearing part of the pressure between the glass 110 and the back sheet 150 or part of the downward pressure of the lamination equipment. This supports the gap between the glass 110 and the back sheet 150 in the area where the sealant layer 200 is located, so that the compression of the sealant layer 200 can be controlled within a set range, avoiding excessive extrusion and ensuring that its thickness after lamination reaches the design value. This significantly reduces quality defects such as missing sealant at the edges of the photovoltaic module and bubbles in the sealant layer 200, and improves the sealing reliability and long service life of the photovoltaic module.

[0044] It is understood that the glass 110, front encapsulant film 120, battery layer 130, back encapsulant film 140 and backsheet 150 in this embodiment are all conventional components in photovoltaic modules. Those skilled in the art are well aware of their specific structural composition and material properties, so they will not be described in detail here.

[0045] See Figures 2 to 4 As shown, in this embodiment of the invention, the area of ​​the glass 110 and the backplate 150 is larger than the area of ​​the laminated assembly 160 composed of the front adhesive film 120, the battery layer 130, and the back adhesive film 140. When the laminated assembly 160 is centrally disposed between the glass 110 and the backplate 150, a blank area will naturally form around the periphery of the laminated assembly 160 between the glass 110 and the backplate 150. This blank area is located at the entire edge of the main body 100. These blank areas are precisely the spaces used for installing the sealant layer 200.

[0046] It should be noted that the terms "inner" and "outer" used in this application context refer to the planar orientation of the photovoltaic module. Specifically, in the planar orientation, the side closer to the center of the photovoltaic module is defined as "inner," and the side farther from the center and closer to the edge is defined as "outer." For example, the "periphery of the stacked assembly 160" mentioned above refers to the area of ​​the stacked assembly 160 in the planar orientation that is away from the center of the photovoltaic module and faces the edge.

[0047] Specifically, taking the support member 300 located on the outer periphery of the sealant layer 200 as an example, please refer to... Figure 7 After the sealant layer 200 is placed in the aforementioned blank area, from a top view, the photovoltaic module consists of a stacked assembly 160, a sealant layer 200, and a support member 300, from the inside out.

[0048] The sealant layer 200 is used to form a complete sealing barrier around the laminated assembly 160, thereby effectively preventing moisture from the external environment from entering the module and ensuring the long-term sealing reliability and service life of the photovoltaic module.

[0049] For example, see Figure 7 In this embodiment, the sealant layer 200 can be a rectangular frame structure surrounding the periphery of the laminated assembly 160 composed of the front sealant film 120, the battery layer 130, and the back sealant film 140. Based on this arrangement, the sealant layer 200 forms a circumferentially closed sealed space between the glass 110 and the backsheet 150, with the laminated assembly 160 located precisely within this closed space. Thus, the sealant layer 200 can completely isolate the battery layer 130 from the external environment, fully utilizing its function of blocking moisture, thereby providing stable and reliable long-term sealing performance for the photovoltaic module.

[0050] Specifically, in this embodiment, the sealant layer 200 can be formed by applying butyl rubber along the edge of the laminate assembly 160. As a high-performance sealing material, butyl rubber has excellent water vapor barrier properties and good weather resistance, effectively preventing water vapor from the external environment from entering the photovoltaic module.

[0051] In this embodiment, the support member 300 adopts a rigid or semi-rigid structure. For example, the support member 300 can be a rigid structure made of metal materials such as aluminum or stainless steel, or a semi-rigid structure made of high-hardness, high-temperature resistant rubber materials such as EPDM rubber or polyurethane rubber, which can ensure that the support member 300 will not undergo significant deformation during the lamination process. In this way, the support member 300 can form a stable support around the sealant layer 200, effectively maintaining the distance between the glass 110 and the back plate 150 in the sealing area, so that this distance corresponds to the thickness of the sealant layer 200 after lamination, thereby controlling the compression of the sealant layer 200 within the design range and avoiding excessive compression.

[0052] In some embodiments, the support member 300 is located between the back plate 150 and the glass 110, and the thickness of the support member 300 matches the expected thickness of the sealant layer 200 after lamination. That is, when the support member 300 is located between the back plate 150 and the glass 110, the support member 300 primarily supports the back plate 150 by utilizing its own physical restraint (its own thickness), thereby maintaining the distance between the glass 110 and the back plate 150 during lamination. The size of this distance is directly determined by the thickness of the support member 300 itself. Therefore, in this embodiment, the thickness of the support member 300 is set to be less than the initial thickness of the sealant layer 200 and equal to the preset thickness of the sealant layer 200 after lamination. In this way, during the lamination process, when the gap between the glass 110 and the back plate 150 is compressed to the thickness of the support 300, the support 300 acts as a limit to prevent the gap from shrinking further, thereby ensuring that the thickness of the sealant layer 200 after lamination can accurately reach the preset value, avoiding defects such as excessively thin sealant layer, missing sealant or air bubbles caused by excessive compression.

[0053] For details, see Figure 2 and Figure 7 In one example, the support member 300 is at least partially located on the outer periphery of the sealant layer 200, while the figure shows the support member 300 entirely located on the outer periphery of the sealant layer 200. Furthermore, the support member 300 extends along the outer periphery of the sealant layer 200, i.e., surrounds the periphery of the sealant layer 200. Specifically, see [reference needed]. Figure 7 Correspondingly, since the sealant layer 200 is configured as a rectangular frame structure, the support member 300 in this embodiment is laid out along the outer periphery of the rectangular frame structure, so that the support member 300 can form an effective support on each side edge of the main body 100, ensuring that the sealant layer 200 will not be excessively squeezed in all directions due to lamination pressure, thereby ensuring the uniformity of the thickness and the consistency of the molding of the sealant layer 200 in the circumferential direction, and thus improving the overall sealing quality.

[0054] Furthermore, such as Figure 12 As shown, in some embodiments, the support member 300 located on the outer periphery of the sealant layer 200 is integrally formed with the backing plate 150. Specifically, the support member 300 in this area can be formed by bending downwards from the edge portion of the backing plate 150 to the surface of the front-facing adhesive film of the glass 110, that is, the support structure extends from the material of the backing plate 150 itself. This integrally formed structure provides a larger bonding area between the backing plate 150 and the sealant layer 200 in the edge region, enhancing their adhesive strength and effectively improving edge sealing performance. Simultaneously, since the support member 300 and the backing plate 150 are of the same integral structure, it helps to ensure the positional stability and support reliability of the support member 300 during the lamination process.

[0055] Furthermore, in embodiments where the support member 300 is at least partially located on the outer periphery of the sealant layer 200, the portion of the support member 300 located on the outer periphery of the sealant layer 200 is provided with a through-channel for discharging adhesive material and / or gas. This channel can dissipate excess adhesive material and trapped air from the sealant layer 200, thereby effectively reducing air bubble defects and improving the molding quality of the sealant layer 200.

[0056] For example, see Figure 2 The channel may include an overflow hole 310 formed on the support member 300. The overflow hole 310 penetrates the support member 300 in a direction from the inner circumference of the sealant layer 200 to the outer circumference, so that the overflow hole 310 can connect the inner cavity of the sealant layer 200 with the external space. In this way, during the lamination process, excess adhesive and air trapped inside the sealant layer 200 can be discharged to the outside through the overflow hole 310, thereby effectively eliminating air bubbles that may remain after lamination, significantly improving the density and uniformity of the sealant layer 200, and greatly improving the insulation performance and sealing effect of the edge area.

[0057] Furthermore, see Figure 5 Each edge of the support member 300 is provided with a plurality of overflow holes 310, which are evenly spaced along the extension direction of the support member 300. This arrangement allows the adhesive and gas in each area of ​​the sealant layer 200 to be discharged evenly and smoothly during the lamination process, thereby further improving the circumferential density and thickness consistency of the sealant layer 200.

[0058] In the above embodiment, after final lamination, the excess adhesive squeezed out from the sealant layer 200 will naturally fill the overflow holes 310. After cooling and curing, these filled overflow holes 310 can still form a continuous sealing barrier, effectively blocking the intrusion of external moisture, thus ensuring the function of discharging adhesive and air while not adversely affecting the overall sealing performance of the component.

[0059] Further, see Figure 2 In embodiments where the support member 300 is at least partially located on the outer periphery of the sealant layer 200, the portion of the support member 300 located on the outer periphery of the sealant layer 200 can be completely within the coverage area of ​​the glass 110 and the back panel 150. For example, the length and width of the rectangular frame structure enclosed by the support member 300 are both less than or equal to the length and width of the glass 110 and the back panel 150. This arrangement allows the support member 300 to be completely accommodated within the blank area between the glass 110 and the back panel 150, ensuring its stable support function during lamination, while avoiding interference or affecting the appearance due to exceeding the edge of the component.

[0060] See Figure 4 In other embodiments, the portion of the support member 300 located on the outer periphery of the sealant layer 200 is further provided with an extension 320. The extension 320 extends in the thickness direction toward the surface of the glass 110 away from the front adhesive film, and finally becomes flush with the surface of the glass 110 away from the front adhesive film. Specifically, see [reference needed]. Figure 4 At one edge of the photovoltaic module, the cross-sectional shape of the portion located on the outer periphery of the sealant layer 200 is approximately L-shaped. This configuration allows the support member 300, embedded between the glass 110 and the backsheet 150, to support the edge and maintain spacing. The extension 320 serves as a positioning structure; when the extension 320 is in contact with the edge of the glass 110, it indicates that the support member 300 is in place, facilitating accurate installation and improving production efficiency and assembly precision. Furthermore, the lower surface of the extension 320 is flush with the lower surface of the glass 110. This allows the lower surface of the extension 320 to share the same support platform or component (e.g., the lower worktable of a laminator) as the glass 110. This helps ensure uniform stress on the support member 300 during lamination, preventing tilting or deformation due to localized suspension or insufficient support, thus guaranteeing the overall support effect and stability of the support member 300.

[0061] See Figure 10 In some embodiments, the support 300 is at least partially located on the inner circumferential side of the sealant layer 200. Figure 10 In the specific structure shown, all the support members 300 are located on the inner circumferential side of the sealant layer 200 and extend along the inner circumferential side of the sealant layer 200. That is, the support members 300 are arranged at the edge of the internal space enclosed by the sealant layer 200 and are set close to the inner circumferential boundary of the sealant layer 200.

[0062] Specifically, corresponding to the sealant layer 200 being configured as a rectangular frame structure, the support member 300 in this embodiment is arranged along the inner periphery of the rectangular frame structure, located on the inner periphery side of the sealant layer 200 and adjacent to its inner periphery boundary. Through this arrangement, the support member 300 can provide effective support on each edge of the main body 100, ensuring that the sealant layer 200 is not excessively compressed in any direction due to lamination pressure. This guarantees the uniformity of the sealant layer 200's thickness and the consistency of its molding in the circumferential direction, thereby significantly improving the overall edge sealing quality.

[0063] See Figure 8 and Figure 9 In some embodiments, the support member 300 is at least partially embedded within the sealant layer 200. In the specific structure shown in the figure, the support member 300 is entirely embedded within the sealant layer 200 and extends along the contour of the sealant layer 200.

[0064] Specifically, corresponding to the sealant layer 200 being configured as a rectangular frame structure, the support member 300 in this embodiment is embedded within the outline of the rectangular frame structure. That is, the support member 300 is wrapped inside the sealant layer 200 and extends along the direction of the sealant layer 200. Through this arrangement, the support member 300 can provide effective support on each edge of the main body 100, ensuring that the sealant layer 200 is not excessively compressed in any direction due to lamination pressure. This guarantees the uniformity of the sealant layer 200's thickness and the consistency of its molding in the circumferential direction, thereby significantly improving the overall edge sealing quality.

[0065] It should be noted that in the embodiments where the support member 300 is partially or entirely embedded within the sealant layer 200, a pre-integrated manufacturing process can be employed. Specifically, during the preparation of the sealant layer 200, the support member 300 can be partially or entirely pre-embedded within the material of the sealant layer 200, so that the support member 300 and the sealant layer 200 together form a composite sealing strip.

[0066] Further, see Figure 9 In embodiments where the support member 300 is embedded within the sealant layer 200, multiple support members 300 can be spaced apart along the direction from the battery layer 130 to the sealant layer 200 (i.e., the planar direction). The spaced arrangement of multiple support members 300 allows them to work together to provide support, thereby dispersing lamination pressure, improving the stability and reliability of the support, and further ensuring the uniformity of the sealant layer 200's thickness in the circumferential direction.

[0067] Furthermore, in this embodiment, the cross-sectional area of ​​the support member 300 accounts for 10% to 60% of the total cross-sectional area of ​​the composite sealing strip. This arrangement ensures that the support member 300 has sufficient supporting area to effectively bear pressure during lamination and maintain the distance between the glass 110 and the back plate 150, without excessively encroaching on the adhesive space of the sealing layer 200, thus ensuring that the sealing layer 200 has sufficient sealing material to achieve reliable barrier performance.

[0068] It should be understood that the above embodiments can be flexibly combined according to requirements. That is, the support member 300 is located between the back plate 150 and the glass 110, and the outer peripheral side, inner peripheral side, or interior of the sealant layer 200 can be arbitrarily combined. Specifically, it can include any one structural form, any combination of two structural forms, or a combination of three structural forms simultaneously. For example, the support member 300 can be located simultaneously on the inner peripheral side and the outer peripheral side of the sealant layer 200, or simultaneously on the inner peripheral side and the interior of the sealant layer 200, or simultaneously include three positional relationships: outer peripheral side, inner peripheral side, and interior.

[0069] See Figure 11 The figure exemplarily illustrates a combined implementation where the support member 300 has three parts located on the outer periphery, inner periphery, and interior of the sealant layer 200: an inner support portion 330, an outer support portion 340, and a connecting portion 350. The inner support portion 330 is located on the inner periphery of the sealant layer 200, the outer support portion 340 is located on the outer periphery of the sealant layer 200, and the connecting portion 350 is embedded within the sealant layer 200 and connected to both the inner and outer support portions 330 and 340, respectively, with an H-shaped cross-section. This configuration allows the support member 300 to provide support on both the inner and outer peripheries of the sealant layer 200 simultaneously, while the connecting portion 350 integrates the inner and outer support portions, enhancing the overall structural stability and support uniformity, and further improving the thickness control accuracy of the sealant layer 200 during the lamination process.

[0070] In this embodiment of the invention, the support member 300 may be configured as continuous or discontinuous along the extending direction of the sealant layer 200.

[0071] For example, see Figure 5 and Figure 7 In some specific examples, the support member 300 is configured as a continuous strip-shaped structure extending along the edge direction on the edge side of the main body 100. In this way, the support member 300 can form uninterrupted continuous support along the entire length of the edge of the main body 100, ensuring a uniform distribution of the supporting force.

[0072] For example, see Figure 3 , Figure 6 and Figure 13 In other embodiments, the support member 300 on the edge side of the main body 100 may also be configured as a discontinuous structure extending along the edge direction and spaced apart. The spacing of these intervals may be set small enough that they do not substantially affect the overall support effect formed by the support member 300 at the edge of the main body 100, while still effectively maintaining the distance between the glass 110 and the back plate 150, thereby achieving the purpose of reducing material costs.

[0073] Understandably, see Figure 6 In embodiments where the support member 300 is arranged in a discontinuous structure on the outer periphery of the sealant layer 200, the intervals between the various support portions of the support member 300 can themselves serve as channels. Similar to the aforementioned overflow holes 310, these intervals are also arranged through the body 100 in a direction from the center to the edge, and can also serve as channels for discharging and venting adhesive during the lamination process, expelling excess adhesive and internally trapped air from the sealant layer 200, thereby effectively reducing bubble defects and improving the molding quality of the sealant layer 200.

[0074] Additionally, it should be noted that the cross-sectional shape of the support member 300 is not particularly limited in this embodiment of the invention. Specifically, when the support member 300 adopts a continuous structure, its cross-sectional shape along the vertical direction (i.e., the thickness direction of the photovoltaic module) can be rectangular, trapezoidal, or other regular or irregular geometric shapes. When the support member 300 adopts a discontinuous structure (e.g., multiple discretely arranged support blocks), the cross-sectional shape of each support portion along the horizontal direction (i.e., the plane direction of the photovoltaic module) can be rectangular, circular, elliptical, or other polygonal shapes.

[0075] Further, see Figure 8 In some embodiments, the lower surface of the backplate 150 facing the back adhesive film 140, for bonding with the sealant layer 200, is provided with grooves and / or protrusions. These grooves and / or protrusions can be achieved through various processing methods. For example, the corresponding area of ​​the lower surface of the backplate 150 can be set as wavy or serrated, or it can be physically embossed to form a dense pit structure. This configuration can further increase the effective bonding surface area between the backplate 150 and the sealant layer 200, thereby significantly improving the bonding strength between the two and enhancing the reliability and durability of the edge seal.

[0076] In some embodiments, the surface of the support member 300 facing the sealant layer 200 is also formed with grooves and / or protrusions. These grooves and / or protrusions on the back plate 150 serve the same function: to increase the effective adhesive surface area between the support member 300 and the sealant layer 200, thereby enhancing the bond strength between them.

[0077] 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.

[0078] It should be noted that the illustrations provided in this embodiment are merely schematic representations of the basic concept of the present invention. The structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and to enable them to understand and read the invention. They are not intended to limit the conditions under which the invention can be implemented. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives of the invention, should still fall within the scope of the technical content disclosed in the invention.

[0079] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "lateral," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They 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 limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

Claims

1. A photovoltaic module, characterized in that, include: The main body (100) includes glass (110), front adhesive film (120), battery layer (130), back adhesive film (140) and back plate (150) stacked from bottom to top. A sealant layer (200) is disposed between the glass (110) and the back plate (150), and is arranged circumferentially around the front adhesive film (120), the battery layer (130) and the back adhesive film (140); A support member (300) is supported between the glass (110) and the back plate (150) and is disposed inside the sealant layer (200) and / or on the inner circumferential side of the sealant layer (200) and / or on the outer circumferential side of the sealant layer (200).

2. The photovoltaic module according to claim 1, characterized in that, The support member (300) is a rigid or semi-rigid structure.

3. The photovoltaic module according to claim 1, characterized in that, The support member (300) is at least partially located on the outer periphery of the sealant layer (200) and extends along the outer periphery of the sealant layer (200); and / or The support member (300) is at least partially located on the inner circumferential side of the sealant layer (200) and extends along the inner circumferential side of the sealant layer (200); and / or The support (300) is at least partially embedded within the sealant layer (200) and extends along the contour of the sealant layer (200).

4. The photovoltaic module according to claim 1, characterized in that, Along the extending direction of the sealant layer (200), the support member (300) is continuous; or Along the extension direction of the sealant layer (200), the support member (300) is discontinuous.

5. The photovoltaic module according to claim 1, characterized in that, The support member (300) is at least partially located on the outer periphery of the sealant layer (200), and the portion of the support member (300) located on the outer periphery of the sealant layer (200) is provided with a channel that penetrates through the inside and outside.

6. The photovoltaic module according to claim 1, characterized in that, The support member (300) is at least partially located on the outer periphery of the sealant layer (200), and the portion of the support member (300) located on the outer periphery of the sealant layer (200) is provided with an extension (320), the extension (320) extending in the thickness direction toward the surface of the glass (110) away from the front adhesive film (120) and being flush with the surface of the glass (110) away from the front adhesive film (120).

7. The photovoltaic module according to claim 1, characterized in that, The support member (300) is at least partially disposed on the outer periphery of the sealant layer (200) and integrally formed with the back plate (150).

8. The photovoltaic module according to claim 1, characterized in that, The support member (300) is disposed inside the sealant layer (200), and multiple support members (300) are provided at intervals along the direction from the battery layer (130) to the sealant layer (200).

9. The photovoltaic module according to claim 1, characterized in that, The support member (300) includes an inner support portion (330) located on the inner periphery of the sealant layer (200), an outer support portion (340) located on the outer periphery of the sealant layer (200), and a connecting portion (350) embedded in the sealant layer (200) and connecting the inner support portion (330) and the outer support portion (340) respectively.

10. The photovoltaic module according to claim 1, characterized in that, The surface of the back plate (150) facing the back adhesive film (140) for bonding with the sealant layer (200) is provided with grooves and / or protrusions; and / or The support member (300) has grooves and / or protrusions formed on the surface facing the sealant layer (200).

Images