Laminated assembly and photovoltaic assembly

Abstract

The utility model relates to a laminated assembly and a photovoltaic assembly. The lamination assembly comprises a lamination piece, the lamination piece comprises a battery string layer, a first substrate and a second substrate, the first substrate and the second substrate are located on the two sides of the battery string layer, the first substrate comprises a first sub-part and a second sub-part, the second substrate comprises a third sub-part and a fourth sub-part, and the first sub-part and the third sub-part coincide with each other in the thickness direction. The orthographic projection of the cell string layer on the plane where the first substrate is located is located in the orthographic projection of the first sub-part on the plane where the first substrate is located; the second sub-part and the fourth sub-part are mutually staggered along the thickness direction; and the stripping layer is arranged on at least one of the surface of one side, facing the battery string layer, of the second sub-part and the surface of one side, facing the battery string layer, of the fourth sub-part. Therefore, according to the laminated assembly and the photovoltaic assembly provided by the invention, the appearance of the photovoltaic assembly can be improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic technology, in particular to laminated components and photovoltaic components. Background Art

[0002] Solar cells, also known as photovoltaic cells, are semiconductor devices that convert sunlight directly into electricity. Because they are environmentally friendly and do not cause environmental pollution, and because solar energy is a renewable resource, solar cells are a new type of battery with broad development prospects.

[0003] In related technologies, a photovoltaic module may include front glass, a cell string layer and back glass arranged in sequence, and an encapsulation adhesive layer is provided between the front glass and the cell string layer, as well as between the back glass and the cell string layer. The front glass and the back glass are both bonded to the cell string layer through the encapsulation adhesive layer.

[0004] However, the above photovoltaic modules are prone to glue overflow, resulting in poor appearance of the photovoltaic modules. Utility Model Content

[0005] Based on this, it is necessary to provide a laminated component and a photovoltaic component that can improve the appearance of the photovoltaic component.

[0006] In a first aspect, an embodiment of the present application provides a laminate assembly, comprising: a laminate, the laminate comprising a battery string layer, a first substrate and a second substrate, the first substrate and the second substrate being respectively arranged on both sides of the battery string layer in a thickness direction; the first substrate comprising a first sub-section and a second sub-section, the second substrate comprising a third sub-section and a fourth sub-section, the orthographic projection of the first sub-section on the plane where the first substrate is located coincides with the orthographic projection of the third sub-section on the plane where the first substrate is located, and the orthographic projection of the battery string layer on the plane where the first substrate is located is located within the orthographic projection of the first sub-section on the plane where the first substrate is located; the orthographic projection of the second sub-section on the plane where the first substrate is located does not overlap with the orthographic projection of the fourth sub-section on the plane where the first substrate is located; wherein the laminate assembly further comprises a peeling layer, the peeling layer being arranged on at least one of the surface of the second sub-section facing the battery string layer and the surface of the fourth sub-section facing the battery string layer.

[0007] The laminated assembly provided in the embodiment of the present application can remove the peeling layer after the laminated assembly is laminated to remove the overflowed glue on the peeling layer, so that the overflowed glue on the photovoltaic assembly can be simply removed to reduce the adverse effects of cleaning the overflowed glue on the production efficiency of the photovoltaic assembly, and can also reduce the adverse effects of residual overflowed glue on the appearance of the photovoltaic assembly, so as to improve the production efficiency of the photovoltaic assembly and improve the appearance of the photovoltaic assembly.

[0008] In one embodiment, a portion of the peeling layer is provided on the side wall of the second sub-portion;

[0009] And / or, part of the release layer is disposed on a surface of the second sub-portion facing away from the battery string layer.

[0010] In one embodiment, a portion of the peeling layer is disposed on the side wall of the fourth sub-section;

[0011] And / or, part of the release layer is disposed on a surface of the fourth sub-portion facing away from the battery string layer.

[0012] In one embodiment, the first sub-section and the second sub-section are arranged along a first direction, and the third sub-section and the fourth sub-section are arranged along the first direction, and the first direction is perpendicular to the thickness direction of the battery string layer;

[0013] The first subsection includes a first sidewall facing away from the second subsection, and the third subsection includes a second sidewall facing away from the fourth subsection.

[0014] In one embodiment, part of the peeling layer is disposed on the first side wall, and there is a gap between the peeling layer on the first side wall and the peeling layer on the fourth sub-portion;

[0015] And / or, part of the peeling layer is disposed on the second side wall, and a distance exists between the peeling layer located on the second side wall and the peeling layer located on the second sub-portion.

[0016] In one embodiment, the laminate assembly further comprises an adhesive barrier layer, the adhesive barrier layer being located on a side of the release layer facing away from the laminate;

[0017] The resist layer includes a first sub-resist layer and a second sub-resist layer connected to each other. The first sub-resist layer is arranged on the side of the second sub-portion facing the battery string layer, and the second sub-resist layer is arranged on the second side wall.

[0018] In one embodiment, the resist layer includes a third sub-resist layer and a fourth sub-resist layer connected to each other. The third sub-resist layer is arranged on a side of the fourth sub-portion facing the battery string layer, and the fourth sub-resist layer is arranged on the first side wall.

[0019] In one embodiment, the adhesive layer includes a fifth sub-adhesive layer, the fifth sub-adhesive layer is located on a side wall of the second sub-portion and a side away from the battery string layer, and the fifth sub-adhesive layer is connected to the first sub-adhesive layer;

[0020] And / or, the resist layer includes a sixth sub-resist layer, the sixth sub-resist layer is located on a side of the third sub-portion away from the battery string layer, and the sixth sub-resist layer is connected to the second sub-resist layer.

[0021] In one embodiment, the adhesive layer includes a seventh sub-adhesive layer, the seventh sub-adhesive layer is located on a side wall of the fourth sub-portion and a side away from the battery string layer, and the seventh sub-adhesive layer is connected to the third sub-adhesive layer;

[0022] And / or, the resist layer includes an eighth sub-resist layer, the eighth sub-resist layer is located on a side of the first sub-portion away from the battery string layer, and the eighth sub-resist layer is connected to the fourth sub-resist layer.

[0023] In one embodiment, the laminate assembly further includes an adhesive barrier layer, a first support member, and a second support member. The adhesive barrier layer is located on a side of the release layer facing away from the laminate, and the first support member and the second support member are both located on a side of the adhesive barrier layer facing away from the release layer.

[0024] The first support member is arranged on a side of the fourth sub-portion facing the battery string layer, and the second support member is arranged on a side of the second sub-portion facing the battery string layer.

[0025] In one embodiment, a surface of the first support member facing away from the second substrate is flush with a surface of the first substrate facing away from the second substrate;

[0026] And / or, the distance between the surface of the second support member facing away from the first substrate and the first substrate along the thickness direction of the battery string layer is a first distance, the distance between the surface of the second substrate facing away from the first substrate and the first substrate along the thickness direction of the battery string layer is a second distance, the first distance is greater than the second distance, and the difference between the first distance and the second distance is greater than or equal to 0.5 mm.

[0027] In one embodiment, the first support member is arranged to protrude from the side wall of the fourth sub-section;

[0028] Alternatively, the side wall of the first support member is flush with the side wall of the fourth sub-section.

[0029] In one embodiment, the second support member is provided protruding from the side wall of the second sub-section;

[0030] Alternatively, the side wall of the second support member is flush with the side wall of the second sub-section.

[0031] In a second aspect, an embodiment of the present application provides a photovoltaic module, comprising: a cell string layer, a first substrate and a second substrate, wherein the first substrate and the second substrate are respectively arranged on both sides of the cell string layer in a thickness direction; the first substrate comprises a first sub-section and a second sub-section, and the second substrate comprises a third sub-section and a fourth sub-section, the orthographic projection of the first sub-section on the plane where the first substrate is located coincides with the orthographic projection of the third sub-section on the plane where the first substrate is located, and the orthographic projection of the cell string layer on the plane where the first substrate is located is located within the orthographic projection of the first sub-section on the plane where the first substrate is located; the orthographic projection of the second sub-section on the plane where the first substrate is located does not overlap with the orthographic projection of the fourth sub-section on the plane where the first substrate is located; wherein, an encapsulation adhesive layer is provided between the cell string layer and the first substrate and between the cell string layer and the second substrate, and the orthographic projection of the encapsulation adhesive layer on the plane where the first substrate is located is located within the orthographic projection of the first sub-section on the plane where the first substrate is located.

[0032] The photovoltaic module provided in the embodiment of the present application has no glue overflow on the photovoltaic module, which can improve the appearance of the photovoltaic module.

[0033] In a third aspect, an embodiment of the present application provides a method for preparing a photovoltaic module, comprising:

[0034] A laminate and a peeling layer are provided; the laminate includes a battery string layer, a first substrate and a second substrate, the first substrate and the second substrate are respectively arranged on both sides of the battery string layer in a thickness direction; the first substrate includes a first sub-section and a second sub-section, the second substrate includes a third sub-section and a fourth sub-section, the orthographic projection of the first sub-section on the plane where the first substrate is located coincides with the orthographic projection of the third sub-section on the plane where the first substrate is located, the orthographic projection of the battery string layer on the plane where the first substrate is located is located within the orthographic projection of the first sub-section on the plane where the first substrate is located; the orthographic projection of the second sub-section on the plane where the first substrate is located does not overlap with the orthographic projection of the fourth sub-section on the plane where the first substrate is located; the peeling layer is provided on at least one of a surface of the second sub-section facing the battery string layer and a surface of the fourth sub-section facing the battery string layer; the laminate and the peeling layer are laminated;

[0035] The release layer is removed to form a photovoltaic module.

[0036] The laminated assembly provided in the embodiment of the present application can remove the peeling layer after the laminated assembly is laminated to remove the overflowed glue on the peeling layer, so that the overflowed glue on the photovoltaic assembly can be simply removed to reduce the adverse effects of cleaning the overflowed glue on the production efficiency of the photovoltaic assembly, and can also reduce the adverse effects of residual overflowed glue on the appearance of the photovoltaic assembly, so as to improve the production efficiency of the photovoltaic assembly and improve the appearance of the photovoltaic assembly.

[0037] In one embodiment, after providing the laminate and the release layer, and before laminating the laminate and the release layer, the method further comprises:

[0038] forming an adhesive barrier layer on a side of the release layer facing away from the laminate;

[0039] After laminating the laminate and peel ply, the process also includes:

[0040] Remove the resist layer.

[0041] In one embodiment, after forming the adhesive barrier layer on the side of the release layer facing away from the laminate, and before laminating the laminate and the release layer, the method further comprises:

[0042] forming a first supporting member and a second supporting member on a side of the adhesive barrier layer facing away from the peeling layer;

[0043] After laminating the laminate and peel ply, the process also includes:

[0044] Remove the first support member and the second support member. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A cross-sectional view of a laminate assembly provided in accordance with an embodiment of the present application.

[0046] Figure 2 Another cross-sectional view of a laminate assembly provided in an embodiment of the present application.

[0047] Figure 3 A cross-sectional view of a photovoltaic module provided in an embodiment of the present application.

[0048] Description of reference numerals:

[0049] 100, laminate assembly; 101, laminate; 110, first substrate; 111, first sub-section; 1111, first sidewall; 112, second sub-section; 120, second substrate; 123, third sub-section; 1232, second sidewall; 124, fourth sub-section; 130, battery string layer; 140, peeling layer; 141, first sub-peeling layer; 142, second sub-peeling layer; 143, third sub-peeling layer; 144, fourth sub-peeling layer; 4. Fourth sub-stripping layer; 150. Glue resist layer; 151. First sub-glue resist layer; 152. Second sub-glue resist layer; 153. Third sub-glue resist layer; 154. Fourth sub-glue resist layer; 155. Fifth sub-glue resist layer; 156. Sixth sub-glue resist layer; 157. Seventh sub-glue resist layer; 158. Eighth sub-glue resist layer; 161. First support member; 162. Second support member; 170. Encapsulation glue layer; 200. Photovoltaic module. DETAILED DESCRIPTION

[0050] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0051] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0052] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0053] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0054] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0055] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, 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 embodiment.

[0056] In the related art, a photovoltaic module may include a front glass, a cell string layer, and a back glass arranged in sequence, with an encapsulating adhesive layer provided between the front glass and the cell string layer, and between the back glass and the cell string layer. The front glass includes a first extension portion and a second extension portion arranged along the length direction of the photovoltaic module, and the back glass includes a third extension portion and a fourth extension portion arranged along the length direction of the photovoltaic module. The orthographic projection of the first extension portion on the plane where the front glass is located coincides with the orthographic projection of the third extension portion on the plane where the front glass is located, and the cell string layer is located between the first extension portion and the third extension portion. The orthographic projection of the second extension portion on the plane where the front glass is located does not overlap with the orthographic projection of the fourth extension portion on the plane where the front glass is located. In this case, the second extension portion and the back glass are staggered along the thickness direction of the photovoltaic module, and the fourth extension portion and the front glass are staggered along the thickness direction of the photovoltaic module.

[0057] However, during the lamination process of the photovoltaic module, the encapsulation adhesive layer easily overflows onto the surface of the second extension portion facing the back glass and the surface of the fourth extension portion facing the front glass. The overflow of the encapsulation adhesive layer is difficult to clean, thereby affecting the production efficiency of the photovoltaic module. In addition, the residual overflow adhesive will also affect the appearance of the photovoltaic module.

[0058] To solve the above problems, the embodiments of the present application provide a laminated assembly and a photovoltaic assembly, which can simply remove the overflowed glue on the photovoltaic assembly.

[0059] The following will be combined Figure 1-Figure 3 The laminated assembly, photovoltaic assembly and method for preparing the photovoltaic assembly provided in the embodiments of the present application are described.

[0060] See also Figure 1 The present invention provides a laminate assembly 100, which includes a laminate 101. The laminate 101 includes a battery string layer 130, a first substrate 110, and a second substrate 120. The first substrate 110 and the second substrate 120 are respectively disposed on opposite sides of the battery string layer 130 in the thickness direction. The first substrate 110 and the second substrate 120 protect the battery string layer 130.

[0061] For example, at least one of the first substrate 110 and the second substrate 120 may be a glass substrate or a polymer plate.

[0062] The laminate 101 in the laminate assembly 100 is in a state before the photovoltaic assembly 200 is laminated. After the laminate assembly 100 is laminated, the laminate 101 can form the photovoltaic assembly 200.

[0063] Exemplarily, the cell string layer 130 may include a plurality of cells. For example, the cells may include a heterojunction solar cell (HJT), an interdigitated back contact cell (IBC), a heterojunction back contact cell (HBC), or a tunnel oxide passivating contact cell (TOPCON).

[0064] See also Figure 1 , the laminate assembly 100 may have a first direction X, a second direction and a third direction Z, and the first direction X, the second direction and the third direction Z are all different. For example, the first direction X, the second direction and the third direction Z may be perpendicular to each other. The third direction Z may be parallel to the thickness direction of the laminate assembly 100, and the first direction X and the second direction may be perpendicular to the thickness direction of the laminate assembly 100. Exemplarily, the first direction X may be the length direction of the laminate assembly 100, the second direction may be the width direction of the laminate assembly 100, and the third direction Z may be the thickness direction of the laminate assembly 100. The length, width and thickness in the embodiments of the present application are merely for convenience of description and do not imply any limitation on the size. For example, the width may be greater than, equal to or less than the length. The direction of the laminate assembly 100 may be consistent with the direction of the first substrate 110, the battery string layer 130 and the second substrate 120.

[0065] See also Figure 1 The first substrate 110 includes a first sub-portion 111 and a second sub-portion 112, which are arranged in a direction perpendicular to the thickness of the battery string layer 130. The second substrate 120 includes a third sub-portion 123 and a fourth sub-portion 124, which are arranged in a direction perpendicular to the thickness of the battery string layer 130.

[0066] For example, the arrangement direction of the first sub-section 111 and the second sub-section 112 may be the same as or different from the arrangement direction of the third sub-section 123 and the fourth sub-section 124. This embodiment of the application is described by taking the arrangement direction of the first sub-section 111 and the second sub-section 112 as the same as the arrangement direction of the third sub-section 123 and the fourth sub-section 124 as an example.

[0067] For example, see Figure 1The first sub-section 111 and the second sub-section 112 are arranged along the first direction X, and the third sub-section 123 and the fourth sub-section 124 are arranged along the first direction X. For example, the first sub-section 111 includes a first sidewall 1111 facing the fourth sub-section 124, and the third sub-section 123 includes a second sidewall 1232 facing the second sub-section 112. The first sidewall 1111 may be the sidewall of the first sub-section 111 facing away from the second sub-section 112, and the second sidewall 1232 may be the sidewall of the third sub-section 123 facing away from the fourth sub-section 124.

[0068] See also Figure 1 The orthographic projection of the first sub-section 111 on the plane of the first substrate 110 coincides with the orthographic projection of the third sub-section 123 on the plane of the first substrate 110. The first sub-section 111 and the third sub-section 123 are arranged to overlap along the thickness direction of the battery string layer 130. The first sub-section 111 and the third sub-section 123 have the same area. The orthographic projection of the battery string layer 130 on the plane of the first substrate 110 is located within the orthographic projection of the first sub-section 111 on the plane of the first substrate 110. The area of ​​the battery string layer 130 is less than or equal to the areas of the first sub-section 111 and the third sub-section 123. This can reduce the amount of battery string layer 130 exposed outside the first and second substrates 110, 120, thereby allowing the first and second substrates 110, 120 to better protect the battery string layer 130.

[0069] See also Figure 1 The orthographic projection of the second sub-section 112 on the plane where the first substrate 110 is located does not overlap with the orthographic projection of the fourth sub-section 124 on the plane where the first substrate 110 is located. The second sub-section 112 and the second substrate 120 are staggered along the thickness direction of the battery string layer 130, and the fourth sub-section 124 and the first substrate 110 are staggered along the thickness direction of the battery string layer 130.

[0070] In some embodiments, an encapsulation adhesive layer 170 is provided between the battery string layer 130 and the first substrate 110, and between the battery string layer 130 and the second substrate 120. The encapsulation adhesive layer 170 can be used to connect the first substrate 110 and the battery string layer 130 to prevent a gap from forming between the first substrate 110 and the battery string layer 130. In addition, the encapsulation adhesive layer 170 can be used to connect the second substrate 120 and the battery string layer 130 to prevent a gap from forming between the second substrate 120 and the battery string layer 130.

[0071] Exemplarily, the material of the encapsulation adhesive layer 170 includes ethylene-vinylacetate copolymer (EVA), polyolefin thermoplastic elastomer (POE), or an adhesive film (EPE) composited with EVA and POE.

[0072] It should be noted that during the lamination process of the laminate assembly 100, the encapsulation glue layer 170 will overflow between the first sub-section 111 and the third sub-section 123 to the second sub-section 112 and the fourth sub-section 124, thereby causing glue overflow on the surface of the second sub-section 112 facing the battery string layer 130 and the surface of the fourth sub-section 124 facing the battery string layer 130.

[0073] The peeling layer 140 provided in the embodiment of the present application is described below.

[0074] join Figure 1 The laminate assembly 100 further includes a peeling layer 140, which can cover the position of the laminate 101 where glue overflow is likely to occur. During the lamination process of the laminate assembly 100, the glue overflows to the surface of the peeling layer 140 facing away from the laminate 101. After the laminate assembly 100 is laminated, the peeling layer 140 can be removed to remove the glue overflowing onto the peeling layer 140, so that the glue overflow on the photovoltaic assembly 200 can be simply removed to reduce the adverse effects of cleaning the glue overflow on the production efficiency of the photovoltaic assembly 200, and can also reduce the adverse effects of residual glue overflow on the appearance of the photovoltaic assembly 200, so as to improve the production efficiency of the photovoltaic assembly 200 and improve the appearance of the photovoltaic assembly 200.

[0075] For example, see Figure 1 The peeling layer 140 may include a first sub-peeling layer 141, which is arranged on the surface of the second sub-portion 112 facing the battery string layer 130. After the laminated assembly 100 is laminated, the first sub-peeling layer 141 can be removed to remove the overflow glue on the first sub-peeling layer 141, thereby simply removing the overflow glue on the surface of the second sub-portion 112 facing the battery string layer 130, so as to improve the production efficiency of the photovoltaic module 200 and improve the appearance of the photovoltaic module 200.

[0076] For example, see Figure 1 The peeling layer 140 may include a second sub-peeling layer 142, and the second sub-peeling layer 142 is arranged on the surface of the fourth sub-portion 124 facing the battery string layer 130. After the laminated assembly 100 is laminated, the second sub-peeling layer 142 can be removed to remove the overflow glue on the second sub-peeling layer 142, thereby simply removing the overflow glue on the surface of the fourth sub-portion 124 facing the battery string layer 130, so as to improve the production efficiency of the photovoltaic assembly 200 and improve the appearance of the photovoltaic assembly 200.

[0077] The peeling layer 140 may include at least one of a first sub-peeling layer 141 and a second sub-peeling layer 142. The embodiment of the present application is described by taking the first sub-peeling layer 141 and the second sub-peeling layer 142 as an example.

[0078] In some embodiments, see Figure 1 A portion of the release layer 140 is disposed on the sidewalls of the second sub-section 112. After lamination of the laminate assembly 100, this portion of the release layer 140 can be removed, taking away any excess glue thereon. This allows for simple removal of excess glue from the sidewalls of the second sub-section 112, thereby improving the production efficiency and appearance of the photovoltaic module 200. For example, the first sub-release layer 141 can extend onto the sidewalls of the second sub-section 112, thereby increasing the coverage of the first sub-release layer 141 over the second sub-section 112 and better removing excess glue from the photovoltaic module 200.

[0079] In some embodiments, see Figure 1 A portion of the release layer 140 is disposed on the surface of the second sub-portion 112 facing away from the cell string layer 130. After lamination of the laminate assembly 100, the release layer 140 can be removed, and any excess glue thereon can be removed. This allows for easy removal of excess glue from the surface of the second sub-portion 112 facing away from the cell string layer 130, thereby improving the production efficiency and appearance of the photovoltaic module 200. For example, the first sub-release layer 141 can extend to the surface of the second sub-portion 112 facing away from the cell string layer 130, thereby expanding the coverage of the first sub-release layer 141 over the second sub-portion 112 and better removing excess glue from the photovoltaic module 200.

[0080] In some embodiments, see Figure 1 A portion of the release layer 140 is disposed on the sidewalls of the fourth sub-section 124. After lamination of the laminate assembly 100, the release layer 140 can be removed, taking away any excess glue thereon. This allows for simple removal of excess glue from the sidewalls of the fourth sub-section 124, thereby improving the production efficiency and appearance of the photovoltaic module 200. For example, the second sub-release layer 142 can extend onto the sidewalls of the fourth sub-section 124, thereby expanding the coverage of the second sub-release layer 142 over the fourth sub-section 124 and better removing excess glue from the photovoltaic module 200.

[0081] In some embodiments, see Figure 1 A portion of the release layer 140 is disposed on the surface of the fourth sub-portion 124 facing away from the cell string layer 130. After lamination of the laminated assembly 100, the release layer 140 can be removed, carrying away any excess glue thereon. This allows for simple removal of excess glue from the surface of the fourth sub-portion 124 facing away from the cell string layer 130, thereby improving the production efficiency and appearance of the photovoltaic module 200. For example, the second sub-release layer 142 can extend to the surface of the fourth sub-portion 124 facing away from the cell string layer 130, thereby expanding the coverage of the second sub-release layer 142 over the fourth sub-portion 124 and better removing excess glue from the photovoltaic module 200.

[0082] In some embodiments, see Figure 2 , part of the peeling layer 140 is arranged on the first side wall 1111, and the peeling layer 140 may include a third sub-peeling layer 143, the third sub-peeling layer 143 covers the first side wall 1111, and there is a distance between the third sub-peeling layer 143 and the second sub-peeling layer 142. At this time, the third sub-peeling layer 143 and the second sub-peeling layer 142 are two independent sub-peeling layers. During the lamination process, the third sub-peeling layer 143 and the first side wall 1111, and the second sub-peeling layer 142 and the fourth sub-portion 124 can maintain stable adhesion, preventing glue from overflowing into the third sub-peeling layer 143 and the first side wall 1111, and preventing glue from overflowing into the second sub-peeling layer 142 and the fourth sub-portion 124, so that the overflow glue can overflow to the side of the third sub-peeling layer 143 and the second sub-peeling layer 142 away from the laminate 101, so that the overflow glue can be removed by removing the third sub-peeling layer 143 and the second sub-peeling layer 142 after lamination.

[0083] It is understandable that if the third sub-peeling layer 143 is connected to the second sub-peeling layer 142, during the lamination process, the overflowing glue will squeeze the connection between the third sub-peeling layer 143 and the second sub-peeling layer 142 outward, which may cause the third sub-peeling layer 143 to peel off from the first side wall 1111, and the second sub-peeling layer 142 to peel off from the fourth sub-portion 124, so that the overflowing glue directly contacts the first side wall 1111 and the fourth sub-portion 124 and cannot be taken away when the peeling layer 140 is subsequently removed.

[0084] For example, see Figure 2 The third sub-peeling layer 143 can also extend to the surface of the first sub-portion 111 on the side away from the battery string layer 130, so that the overflow glue on the surface of the first sub-portion 111 on the side away from the battery string layer 130 can be simply removed to improve the production efficiency of the photovoltaic module 200 and improve the appearance of the photovoltaic module 200.

[0085] In some embodiments, see Figure 2, part of the peeling layer 140 is arranged on the second side wall 1232, and the peeling layer 140 may include a fourth sub-peeling layer 144, the fourth sub-peeling layer 144 covers the second side wall 1232, and there is a distance between the fourth sub-peeling layer 144 and the first sub-peeling layer 141. At this time, the fourth sub-peeling layer 144 and the first sub-peeling layer 141 are two independent sub-peeling layers. During the lamination process, the fourth sub-peeling layer 144 and the second side wall 1232, and the first sub-peeling layer 141 and the second sub-portion 112 can maintain stable adhesion, preventing glue from overflowing into the fourth sub-peeling layer 144 and the second side wall 1232, and preventing glue from overflowing into the first sub-peeling layer 141 and the second sub-portion 112, so that the overflow glue overflows to the side of the fourth sub-peeling layer 144 and the first sub-peeling layer 141 away from the laminate 101, so that the overflow glue can be removed by removing the fourth sub-peeling layer 144 and the first sub-peeling layer 141 after lamination.

[0086] For example, see Figure 2 The fourth sub-peeling layer 144 can also extend to the surface of the third sub-portion 123 on the side away from the battery string layer 130, so that the overflow glue on the surface of the third sub-portion 123 on the side away from the battery string layer 130 can be simply removed to improve the production efficiency of the photovoltaic module 200 and improve the appearance of the photovoltaic module 200.

[0087] For example, the release layer 140 may be a polyester tape, thereby simplifying the connection between the release layer 140 and the laminate 101. The adhesive force of the release layer 140 is smaller than the adhesive force of the encapsulating adhesive layer 170, so that the release layer 140 is easily removed.

[0088] For example, the thickness of the peeling layer 140 can range from 0.2 mm to 0.8 mm. This prevents the peeling layer 140 from being too thin, which helps prevent the peeling layer 140 from breaking when it is subsequently removed. It also prevents the peeling layer 140 from being too thick, which can reduce the cost of the peeling layer 140. For example, the thickness of the peeling layer 140 can be 0.2 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, or any value between 0.2 mm and 0.8 mm.

[0089] The following describes the adhesive resistance layer 150 provided in the embodiment of the present application.

[0090] In some embodiments, see Figure 2The laminate assembly 100 also includes a glue barrier layer 150, which is located on the side of the peeling layer 140 facing away from the laminate 101. The glue barrier layer 150 can be used to reduce the glue overflowing from between the first sub-section 111 and the third sub-section 123 during the lamination process. The glue barrier layer 150 includes a first sub-glue barrier layer 151 and a second sub-glue barrier layer 152 that are connected. The first sub-glue barrier layer 151 is arranged on the side of the second sub-section 112 facing the battery string layer 130, and the second sub-glue barrier layer 152 is arranged on the second side wall 1232. During the lamination process, the connection between the first sub-glue barrier layer 151 and the second sub-glue barrier layer 152 can prevent the glue overflowing between the first substrate 110 and the second substrate 120 from overflowing to the second sub-section 112, thereby helping to reduce the amount of glue overflowing during the lamination process and also helping to maintain the shape of the laminate assembly 100 after lamination.

[0091] In an embodiment where the fourth sub-peeling layer 144 is disposed on the second sidewall 1232 , the second sub-resist layer 152 is located on a side of the fourth sub-peeling layer 144 facing away from the second sidewall 1232 .

[0092] In some embodiments, see Figure 2 The adhesive layer 150 includes a third sub-adhesive layer 153 and a fourth sub-adhesive layer 154 connected to each other. The third sub-adhesive layer 153 is disposed on the side of the fourth sub-portion 124 facing the battery string layer 130, and the fourth sub-adhesive layer 154 is disposed on the first sidewall 1111. During the lamination process, the connection between the third sub-adhesive layer 153 and the fourth sub-adhesive layer 154 can prevent adhesive overflow between the first substrate 110 and the second substrate 120 from overflowing into the fourth sub-portion 124, thereby reducing the amount of adhesive overflow during the lamination process and maintaining the shape of the laminated assembly 100 after lamination.

[0093] In an embodiment in which the third sub-peeling layer 143 is disposed on the first sidewall 1111 , the fourth sub-resist layer 154 is located on a side of the third sub-peeling layer 143 facing away from the first sidewall 1111 .

[0094] In some embodiments, see Figure 2 The glue resistance layer 150 includes a fifth sub-glue resistance layer 155, which is located on the side wall of the second sub-portion 112, or the fifth sub-glue resistance layer 155 is located on the side wall of the second sub-portion 112 and the side of the second sub-portion 112 away from the battery string layer 130. The fifth sub-glue resistance layer 155 is connected to the first sub-glue resistance layer 151, thereby expanding the connection area between the glue resistance layer 150 and the second sub-portion 112, which is beneficial to improving the connection stability between the glue resistance layer 150 and the second sub-portion 112, and can also improve the blocking effect of the glue resistance layer 150 on glue overflow.

[0095] In some embodiments, see Figure 2The glue resist layer 150 includes a sixth sub-glue resist layer 156, which is located on the side of the third sub-portion 123 away from the battery string layer 130. The sixth sub-glue resist layer 156 is connected to the second sub-glue resist layer 152, thereby expanding the connection area between the glue resist layer 150 and the second substrate 120, which is beneficial to improving the connection stability between the glue resist layer 150 and the second substrate 120, and can also improve the blocking effect of the glue resist layer 150 on glue overflow.

[0096] In some embodiments, see Figure 2 The glue resist layer 150 includes a seventh sub-glue resist layer 157, which is located on the side wall of the fourth sub-portion 124, or the seventh sub-glue resist layer 157 is located on the side wall of the fourth sub-portion 124 and on the side of the fourth sub-portion 124 away from the battery string layer 130. The seventh sub-glue resist layer 157 is connected to the third sub-glue resist layer 153, thereby expanding the connection area between the glue resist layer 150 and the fourth sub-portion 124, which is beneficial to improving the connection stability between the glue resist layer 150 and the fourth sub-portion 124, and can also improve the blocking effect of the glue resist layer 150 on glue overflow.

[0097] In some embodiments, see Figure 2 The adhesive layer 150 includes an eighth sub-adhesive layer 158, which is located on the side of the first sub-portion 111 away from the battery string layer 130. The eighth sub-adhesive layer 158 is connected to the fourth sub-adhesive layer 154, thereby expanding the connection area between the adhesive layer 150 and the first substrate 110, which is beneficial to improving the connection stability between the adhesive layer 150 and the first substrate 110, and can also improve the effect of the adhesive layer 150 on preventing adhesive overflow.

[0098] For example, the adhesive resistance layer 150 may be an adhesive tape, thereby reducing the difficulty of connecting the adhesive resistance layer 150 with other structural components (eg, the peeling layer 140 , the first support member 161 , and the second support member 162 ).

[0099] For example, the thickness of the adhesive layer 150 can range from 0.2 mm to 0.8 mm, thereby preventing the adhesive layer 150 from being too thin, which helps prevent the adhesive layer 150 from being easily broken when it is subsequently removed. It can also prevent the adhesive layer 150 from being too thick, thereby reducing the cost of the adhesive layer 150. For example, the thickness of the adhesive layer 150 can be 0.2 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.8 mm, or any value between 0.2 mm and 0.8 mm.

[0100] The first support member 161 and the second support member 162 provided in the embodiment of the present application are described below.

[0101] In some embodiments, see Figure 2The laminate assembly 100 further includes a first support member 161 and a second support member 162, both of which are located on the side of the adhesive layer 150 facing away from the peeling layer 140. For example, the first support member 161 and the peeling layer 140, as well as the second support member 162 and the peeling layer 140, can be connected via the adhesive layer 150. The first support member 161 is disposed on the side of the fourth sub-section 124 facing the battery string layer 130, and is disposed at the step formed between the fourth sub-section 124 and the first substrate 110. The first support member 161 is beneficial in reducing the step difference caused by the step between the fourth sub-section 124 and the first substrate 110. The second support member 162 is arranged on the side of the second sub-section 112 facing the battery string layer 130, and the second support member 162 is arranged at the step formed between the second sub-section 112 and the second substrate 120. The second support member 162 is beneficial to reducing the step caused by the step between the second sub-section 112 and the second substrate 120, and is beneficial to reducing the problem of bubbles generated in the photovoltaic assembly 200 after lamination.

[0102] It should be noted that during the lamination process of the laminate assembly 100, the first substrate 110 can be located on the top side of the second substrate 120, or the first substrate 110 can be located on the bottom side of the second substrate 120. The embodiment of the present application is described as an example in which the first substrate 110 is located on the top side of the second substrate 120. During the lamination process, the lamination jig that applies pressure to the laminate assembly 100 can be pressed on the side of the first substrate 110 facing away from the second substrate 120.

[0103] In some embodiments, see Figure 2 The surface of the first support member 161 facing away from the second substrate 120 is flush with the surface of the first substrate 110 facing away from the second substrate 120. The surface of the first support member 161 facing away from the second substrate 120 and the surface of the first substrate 110 facing away from the second substrate 120 can be arranged on the same plane, which can form a good planar support for the lamination jig, so that the force at various parts of the lamination assembly 100 is more uniform during the lamination process.

[0104] In some embodiments, see Figure 1The distance between the surface of the second support member 162 facing away from the first substrate 110 and the first substrate 110 along the thickness direction of the battery string layer 130 is a first distance D1, and the distance between the surface of the second substrate 120 facing away from the first substrate 110 and the first substrate 110 along the thickness direction of the battery string layer 130 is a second distance D2. The first distance D1 is greater than the second distance D2, that is, the second support member 162 is protruding from the surface of the second substrate 120 facing away from the first substrate 110, and the thickness of the second support member 162 is set to be larger. During the lamination process, the lamination jig applies pressure toward the first substrate 110. The second support member 162 can provide good support for the second sub-portion 112, and can prevent the second sub-portion 112 from bending under the pressure of the lamination jig and forming a closed opening by adhering to the encapsulation adhesive layer 170 and the battery string layer 130, thereby preventing the gas between the encapsulation adhesive layer 170 and the battery string layer 130 near the second sub-portion 112 and between the encapsulation adhesive layer 170 and the first substrate 110 from being unable to be extracted, thereby preventing the problem of bubbles.

[0105] For example, the difference between the first distance D1 and the second distance D2 is greater than or equal to 0.5 mm. This prevents the second support member 162 from protruding too little from the second substrate 120 on the side facing away from the first substrate 110. This helps improve the support provided by the second support member 162 to the second sub-section 112, effectively preventing the second sub-section 112 from bending under the action of the lamination jig. For example, the difference between the first distance D1 and the second distance D2 can be 0.5 mm, 0.7 mm, 0.9 mm, or any value greater than 0.5 mm.

[0106] In some embodiments, see Figure 1 The first support member 161 is arranged to protrude from the side wall of the fourth sub-section 124. The first support member 161 covers the fourth sub-section 124 well, so that the force transmitted from the first support member 161 to the fourth sub-section 124 is more uniform, so that the force on the fourth sub-section 124 is uniform. In addition, the difficulty of setting the first support member 161 can be reduced.

[0107] In other embodiments, the side wall of the first support member 161 is flush with the side wall of the fourth sub-portion 124. In this way, while making the force on the fourth sub-portion 124 uniform, the material usage of the first support member 161 can be reduced, which is beneficial to reducing the preparation cost of the first support member 161.

[0108] In some embodiments, see Figure 2 The second support member 162 is arranged to protrude from the side wall of the second sub-section 112. The second support member 162 provides better support for the second sub-section 112, which can better prevent the fourth sub-section 124 from being bent by the lamination jig. In addition, the difficulty of setting the second support member 162 can be reduced.

[0109] In other embodiments, the side walls of the second support member 162 are flush with the side walls of the second sub-portion 112. In this way, while preventing the fourth sub-portion 124 from bending due to the lamination jig, the material usage of the second support member 162 can be reduced, which is beneficial to reducing the preparation cost of the second support member 162.

[0110] Exemplarily, the first support member 161 and the second support member 162 may be formed of a high temperature resistant material, which is beneficial to prevent the first support member 161 and the second support member 162 from deforming during the lamination process, so that the first support member 161 and the second support member 162 can play a good supporting role.

[0111] The photovoltaic assembly 200 provided in an embodiment of the present application is described below.

[0112] The present application provides a photovoltaic assembly 200, which can be used in rooftop power plants or other applications. The photovoltaic assembly 200 is formed by laminating the laminated members 101 of the laminated assembly 100 described in the above embodiment. After lamination of the laminated assembly 100, the release layer 140, the adhesive barrier layer 150, the first support member 161, and the second support member 162 can be removed, thereby reducing the impact on the appearance of the photovoltaic assembly 200 and facilitating weight reduction.

[0113] Exemplarily, a photovoltaic module 200 may include a cell string layer 130, a first substrate 110, and a second substrate 120. The first substrate 110 and the second substrate 120 are respectively disposed on opposite sides of the cell string layer 130 in the thickness direction. The first substrate 110 includes a first sub-portion 111 and a second sub-portion 112. The second substrate 120 includes a third sub-portion 123 and a fourth sub-portion 124. The orthographic projection of the first sub-portion 111 on the plane of the first substrate 110 coincides with the orthographic projection of the third sub-portion 123 on the plane of the first substrate 110. The orthographic projection of the cell string layer 130 on the plane of the first substrate 110 is located within the orthographic projection of the first sub-portion 111 on the plane of the first substrate 110. The orthographic projection of the second sub-portion 112 on the plane of the first substrate 110 does not overlap with the orthographic projection of the fourth sub-portion 124 on the plane of the first substrate 110. An encapsulant layer 170 is disposed between the cell string layer 130 and the first substrate 110, and between the cell string layer 130 and the second substrate 120.

[0114] After lamination, the overflowed encapsulant layer 170 can be simply removed by removing the release layer 140, thereby eliminating any overflowed encapsulant from the second sub-section 112 and the fourth sub-section 124. This can reduce the adverse effects of cleaning the overflowed encapsulant on the production efficiency of the photovoltaic module 200 and the adverse effects of residual overflowed encapsulant on the appearance of the photovoltaic module 200, thereby improving the production efficiency and appearance of the photovoltaic module 200. At this point, the orthographic projection of the encapsulant layer 170 on the plane of the first substrate 110 is within the orthographic projection of the first sub-section 111 on the plane of the first substrate 110.

[0115] The following describes a method for preparing the photovoltaic module 200 provided in this embodiment.

[0116] The method for preparing the photovoltaic module 200 provided in the embodiment of the present application is used to prepare the photovoltaic module 200 in the above embodiment. The method comprises:

[0117] First, the laminate 101 and the peeling layer 140 in the above-described embodiment are provided. Among them, the laminate 101 includes a battery string layer 130, a first substrate 110 and a second substrate 120, and the first substrate 110 and the second substrate 120 are respectively arranged on both sides of the battery string layer 130 in the thickness direction; the first substrate 110 includes a first sub-portion 111 and a second sub-portion 112, and the second substrate 120 includes a third sub-portion 123 and a fourth sub-portion 124, the orthographic projection of the first sub-portion 111 on the plane where the first substrate 110 is located coincides with the orthographic projection of the third sub-portion 123 on the plane where the first substrate 110 is located, and the orthographic projection of the battery string layer 130 on the plane where the first substrate 110 is located is located within the orthographic projection of the first sub-portion 111 on the plane where the first substrate 110 is located; the orthographic projection of the second sub-portion 112 on the plane where the first substrate 110 is located does not overlap with the orthographic projection of the fourth sub-portion 124 on the plane where the first substrate 110 is located; the peeling layer 140 is arranged on at least one of the surface of the second sub-portion 112 facing the battery string layer 130 and the surface of the fourth sub-portion 124 facing the battery string layer 130.

[0118] After providing the laminate 101 and the peeling layer 140 , the laminate 101 and the peeling layer 140 may be subjected to a lamination process.

[0119] After laminating the laminate 101 and the release layer 140, the release layer 140 may be removed to form the photovoltaic module 200. When removing the release layer 140, the overflowed encapsulant layer 170 may be simply removed, thereby eliminating overflowed encapsulant from the second sub-section 112 and the fourth sub-section 124. This can reduce the adverse effects of cleaning overflowed encapsulant on the production efficiency of the photovoltaic module 200 and the adverse effects of residual overflowed encapsulant on the appearance of the photovoltaic module 200, thereby improving the production efficiency and appearance of the photovoltaic module 200.

[0120] Illustratively, after providing the laminate 101 and the release layer 140, and before laminating the laminate 101 and the release layer 140, the process further includes forming a resist layer 150 on a side of the release layer 140 facing away from the laminate 101. The resist layer 150 can be used to prevent the encapsulation adhesive layer 170 between the first sub-section 111 and the third sub-section 123 from overflowing. After laminating the laminate 101 and the release layer 140, the process further includes removing the resist layer 150.

[0121] Exemplarily, after forming the adhesive barrier layer 150 on the side of the release layer 140 facing away from the laminate 101, and before laminating the laminate 101 and the release layer 140, the process may further include forming a first support member 161 and a second support member 162 on the side of the adhesive barrier layer 150 facing away from the release layer 140. The first support member 161 is disposed on the side of the fourth subsection 124 facing the cell string layer 130, and the second support member 162 is disposed on the side of the second subsection 112 facing the cell string layer 130. The provision of the first support member 161 and the second support member 162 helps reduce the problem of bubbles in the photovoltaic module 200 after lamination. After laminating the laminate 101 and the release layer 140, the process may further include removing the first support member 161 and the second support member 162.

[0122] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0123] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A laminate assembly, characterized in that include: A laminate comprising a battery string layer, a first substrate, and a second substrate, wherein the first substrate and the second substrate are respectively arranged on both sides of the battery string layer in a thickness direction; The first substrate includes a first sub-section and a second sub-section, the second substrate includes a third sub-section and a fourth sub-section, the orthographic projection of the first sub-section on the plane where the first substrate is located coincides with the orthographic projection of the third sub-section on the plane where the first substrate is located, and the orthographic projection of the battery string layer on the plane where the first substrate is located is located within the orthographic projection of the first sub-section on the plane where the first substrate is located; The orthographic projection of the second sub-portion on the plane where the first substrate is located does not overlap with the orthographic projection of the fourth sub-portion on the plane where the first substrate is located; The laminate assembly further includes a peeling layer, which is provided on at least one of a surface of the second sub-section facing the battery string layer and a surface of the fourth sub-section facing the battery string layer.

2. The laminate assembly according to claim 1, wherein Part of the peeling layer is disposed on the side wall of the second sub-section; And / or, part of the peeling layer is arranged on a surface of the second sub-portion facing away from the battery string layer.

3. The laminate assembly according to claim 1, wherein Part of the peeling layer is disposed on the side wall of the fourth sub-section; And / or, part of the peeling layer is arranged on a surface of the fourth sub-portion facing away from the battery string layer.

4. The laminate assembly according to any one of claims 1 to 3, characterized in that The first sub-section and the second sub-section are arranged along a first direction, the third sub-section and the fourth sub-section are arranged along the first direction, and the first direction is perpendicular to the thickness direction of the battery string layer; The first subsection includes a first sidewall facing away from the second subsection, and the third subsection includes a second sidewall facing away from the fourth subsection.

5. The laminate assembly according to claim 4, characterized in that Part of the peeling layer is disposed on the first side wall, and a distance exists between the peeling layer located on the first side wall and the peeling layer located on the fourth sub-portion; And / or, part of the peeling layer is disposed on the second side wall, and a distance exists between the peeling layer located on the second side wall and the peeling layer located on the second sub-portion.

6. The laminate assembly according to claim 4, wherein The laminate assembly further includes an adhesive barrier layer, the adhesive barrier layer being located on a side of the peeling layer facing away from the laminate; The resist layer includes a first sub-resist layer and a second sub-resist layer connected to each other. The first sub-resist layer is arranged on the side of the second sub-portion facing the battery string layer, and the second sub-resist layer is arranged on the second side wall.

7. The laminate assembly according to claim 6, wherein The resist layer includes a third sub-resist layer and a fourth sub-resist layer connected to each other. The third sub-resist layer is arranged on a side of the fourth sub-portion facing the battery string layer, and the fourth sub-resist layer is arranged on the first side wall.

8. The laminate assembly according to claim 6, wherein The resist layer includes a fifth sub-resist layer, the fifth sub-resist layer is located on a side wall of the second sub-portion and a side away from the battery string layer, and the fifth sub-resist layer is connected to the first sub-resist layer; And / or, the resist layer includes a sixth sub-resist layer, the sixth sub-resist layer is located on a side of the third sub-portion away from the battery string layer, and the sixth sub-resist layer is connected to the second sub-resist layer.

9. The laminate assembly according to claim 7, wherein The resist layer includes a seventh resist layer, the seventh resist layer is located on a sidewall of the fourth sub-portion and a side away from the battery string layer, and the seventh resist layer is connected to the third resist layer; And / or, the resist layer includes an eighth sub-resist layer, the eighth sub-resist layer is located on a side of the first sub-portion away from the battery string layer, and the eighth sub-resist layer is connected to the fourth sub-resist layer.

10. The laminate assembly according to any one of claims 1 to 3, characterized in that: The laminate assembly further includes a glue barrier layer, a first support member, and a second support member, wherein the glue barrier layer is located on a side of the peeling layer facing away from the laminate, and the first support member and the second support member are both located on a side of the glue barrier layer facing away from the peeling layer; The first support member is disposed on a side of the fourth sub-portion facing the battery string layer, and the second support member is disposed on a side of the second sub-portion facing the battery string layer.

11. The laminate assembly according to claim 10, wherein A surface of the first support member facing away from the second substrate is flush with a surface of the first substrate facing away from the second substrate; And / or, the distance between the surface of the second support member facing away from the first substrate and the first substrate along the thickness direction of the battery string layer is a first distance, the distance between the surface of the second substrate facing away from the first substrate and the first substrate along the thickness direction of the battery string layer is a second distance, the first distance is greater than the second distance, and the difference between the first distance and the second distance is greater than or equal to 0.5 mm.

12. The laminate assembly according to claim 10, wherein The first support member is arranged to protrude from the side wall of the fourth sub-section; Alternatively, the side wall of the first support member is flush with the side wall of the fourth sub-section.

13. The laminate assembly according to claim 10, wherein The second support member is arranged to protrude from the side wall of the second sub-part; Alternatively, the side wall of the second support member is flush with the side wall of the second sub-section.

14. A photovoltaic module, characterized in that: include: A battery string layer, a first substrate and a second substrate, wherein the first substrate and the second substrate are respectively arranged on both sides of the battery string layer in a thickness direction; The first substrate includes a first sub-section and a second sub-section, the second substrate includes a third sub-section and a fourth sub-section, the orthographic projection of the first sub-section on the plane where the first substrate is located coincides with the orthographic projection of the third sub-section on the plane where the first substrate is located, and the orthographic projection of the battery string layer on the plane where the first substrate is located is located within the orthographic projection of the first sub-section on the plane where the first substrate is located; The orthographic projection of the second sub-portion on the plane where the first substrate is located does not overlap with the orthographic projection of the fourth sub-portion on the plane where the first substrate is located; Among them, an encapsulation adhesive layer is provided between the battery string layer and the first substrate, and between the battery string layer and the second substrate. The orthographic projection of the encapsulation adhesive layer on the plane where the first substrate is located is located within the orthographic projection of the first sub-part on the plane where the first substrate is located.

Images