Photovoltaic module lamination tool, photovoltaic module lamination structure and photovoltaic module

Abstract

The utility model discloses a photovoltaic module lamination tool, a photovoltaic module lamination structure and a photovoltaic module, the photovoltaic module lamination tool comprises a tool body, the tool body comprises a first surface and a second surface which are oppositely arranged, and an accommodating groove is formed in the tool body; the accommodating groove extends from the first surface to the second surface in a sunken manner so as to accommodate the photovoltaic module; the accommodating groove is provided with a groove bottom wall, the groove bottom wall is provided with a positioning part protruding towards the first surface, and the positioning part is used for positioning the photovoltaic module. By adopting the lamination tool provided by the invention, hot press molding can be carried out on the whole photovoltaic module, so that the photovoltaic module with a frame can be obtained through one-time processing, the operation process can be simplified, and the connection firmness of the frame and other parts of the photovoltaic module can be improved.

Description

Technical Field

[0001] The present application belongs to the field of photovoltaic technology, and specifically relates to a photovoltaic module lamination tooling, a photovoltaic module lamination structure and a photovoltaic module. Background Art

[0002] Solar photovoltaic modules mainly include battery laminates and frames. The frames are wrapped around the battery laminates to protect the battery laminates. Traditional photovoltaic modules are first laminated to form battery laminates, and then the frames are bonded and fixed to the outer edges of the laminates using sealants. The processing procedures of photovoltaic modules with this structure are relatively complicated, and the bonding effect between the frame and the laminates is not good.

[0003] In the related art, the adhesive film layer in the battery laminate is extended between the frame and the battery laminate to achieve bonding and fixing between the frame and the battery laminate by using the adhesive film layer, thereby simplifying the processing steps and improving the connection firmness of the frame. However, the photovoltaic module structure in the related art requires the frame and the laminate to be hot-pressed together, and the positioning and fixing are required with the help of tooling during the processing. At present, there is no suitable tooling for the lamination of photovoltaic modules. Utility Model Content

[0004] The present application provides a photovoltaic module lamination tool, a photovoltaic module lamination structure and a photovoltaic module, aiming to partially or completely solve the problem in the related art that there is no tool to position the photovoltaic module during the processing, and the tool cannot be used for hot pressing and forming processing of the frame and the laminated parts. In order to solve the above technical problems, the present application is implemented as follows:

[0005] In the first aspect, the present application proposes a photovoltaic module lamination tool, comprising: a tool body, the tool body comprising a first surface and a second surface arranged opposite to each other, a receiving groove being provided in the tool body; the receiving groove is recessed and extends from the first surface to the second surface to place the photovoltaic module.

[0006] The accommodating groove has a groove bottom wall, and the groove bottom wall is provided with a positioning portion protruding toward the first surface, and the positioning portion positions the photovoltaic component.

[0007] Optionally, a glue overflow groove is provided around the edges of the positioning portion; and / or the photovoltaic component includes a frame, and a receiving space is formed between the side wall of the receiving groove and the positioning portion, and the frame is at least partially embedded in the receiving space.

[0008] Optionally, the whole formed by the bottom wall of the groove and the positioning portion is provided with a hollow structure, and the hollow structure is communicated with the accommodating groove.

[0009] Optionally, the hollow structure includes a plurality of through holes, and the plurality of through holes are arranged in sequence and at intervals.

[0010] Optionally, the first surface is parallel to the second surface, and the first surface and the second surface are planes;

[0011] And / or, when projected along a direction perpendicular to the second surface, the distance between two adjacent through holes is M, satisfying: 8 mm ≤ M ≤ 25 mm;

[0012] And / or, projected along a direction perpendicular to the second surface, the through hole is a circular hole, a size of the circular hole is D1, and satisfies: 5mm≤D1≤20mm.

[0013] Optionally, the tool body further includes four side surfaces arranged between the first surface and the second surface, at least one of the side surfaces is provided with a magnetic member, and the magnetic member is used for magnetically fixing the frame in the photovoltaic module.

[0014] Optionally, at least three magnetic members are disposed on the side surface, and the at least three magnetic members are arranged in sequence and spaced apart.

[0015] Optionally, an angle edge is formed at the connection between two adjacent side surfaces, and a distance D2 is provided between a magnetic part closest to the angle edge and the corresponding angle edge on the side surface, satisfying: 8mm≤D2≤25mm.

[0016] In the second aspect, the present application proposes a photovoltaic module lamination structure, comprising: a battery stack, a film layer, a frame and the photovoltaic module lamination tooling described in any of the above items; the battery stack, the film layer and the frame are all placed in the accommodating groove, the frame at least partially covers the four edges of the battery stack, the film layer is arranged between the frame and the battery stack, and the positioning portion also abuts against the battery stack.

[0017] Optionally, the frame includes a first side portion and a second side portion connected to each other, the first side portion surrounds and covers the outer side of the circumferential side wall of the battery stack, and the second side portion covers the battery stack.

[0018] The peripheral edges of the member face the bottom wall of the groove, and the second side portion is embedded between the positioning portion and the side wall of the accommodating groove.

[0019] Optionally, the frame is an L-shaped frame, and along the direction perpendicular to the second surface, the distance from the side surface of the battery stack facing away from the bottom wall of the groove to the bottom wall of the groove is greater than or equal to the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove; or, the frame is a C-shaped frame, and along the direction perpendicular to the second surface, the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove is greater than or equal to the distance from the first surface to the bottom wall of the groove.

[0020] Optionally, when the frame is an L-shaped frame, the difference between the distance from the side surface of the battery stack facing away from the bottom wall of the groove to the bottom wall of the groove and the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove is within 2 mm; or, when the frame is a C-shaped frame, the difference between the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove and the distance from the first surface to the bottom wall of the groove is within 2 mm.

[0021] In a third aspect, the present application proposes a photovoltaic module, which is obtained by laminating the photovoltaic module laminate structures described in any one of the above items.

[0022] Optionally, the photovoltaic module includes: a battery stack, a frame and a film layer, the frame at least partially covers the edges of the battery stack, the film layer is arranged between the frame and the battery stack, and the frame is bonded and fixed to the battery stack through the film layer.

[0023] Optionally, the battery stack includes a front glass, a first packaging film, a battery cell, a second packaging film and a back plate, and the first packaging film, the second packaging film and the film layer are an integrated structure.

[0024] In the embodiment of the present application, a receiving groove is provided in the tool body, the receiving groove can be used to accommodate the photovoltaic module to be laminated, and a positioning portion protruding toward the first surface is provided on the bottom wall of the receiving groove, so that the photovoltaic module can be positioned and fixed by the positioning portion. In this way, the laminating tool of the present application can be used to perform hot pressing molding on the photovoltaic module as a whole, and then a photovoltaic module with a frame can be obtained in one-time processing, which not only helps to simplify the operation process, reduce the difficulty of installing the frame and the battery stack, but also improve the installation accuracy and connection firmness of the frame and other parts of the photovoltaic module.

[0025] Additional aspects and advantages of the present application will be given in part in the following description and in part in the following

[0026] It may become apparent from the description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 is a schematic diagram of a photovoltaic module lamination tooling according to an embodiment of the present application;

[0029] Figure 2 is a schematic diagram of photovoltaic module lamination tooling and photovoltaic module assembly according to an embodiment of the present application;

[0030] Figure 3is a schematic diagram of the assembly of the frame and the film layer according to an embodiment of the present application;

[0031] Figure 4 is a schematic diagram of the assembly of a battery stack and an adhesive film layer according to an embodiment of the present application;

[0032] Figure 5 is a schematic diagram of another photovoltaic module lamination tooling according to an embodiment of the present application;

[0033] Figure 6 is a partial cross-sectional view of another photovoltaic module lamination tooling according to an embodiment of the present application;

[0034] Figure 7 is a side schematic diagram of another photovoltaic module lamination tooling according to an embodiment of the present application;

[0035] Figure 8 It is a schematic diagram of assembling another photovoltaic module lamination tool and a photovoltaic module according to an embodiment of the present application.

[0036] Reference numerals:

[0037] 100: tooling body; 101: first surface; 102: second surface; 103: side surface; 110: accommodating groove; 110a: groove bottom wall; 110b: side wall; 120: positioning portion; 120a: accommodating space; 130: glue overflow groove; 140: hollow structure; 141: through hole; 150: magnetic part; 210: battery stack; 220: adhesive film layer; 230: frame; 231: first side portion; 232: second side portion. DETAILED DESCRIPTION

[0038] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0039] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0040] In the description of the present application, it should be understood that 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the following, in conjunction with the accompanying drawings, the photovoltaic module lamination tooling, the photovoltaic module lamination structure and the photovoltaic module provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0043] like Figure 1 and Figure 2 As shown, according to some embodiments of the present application, the photovoltaic module lamination tooling includes: a tooling body 100, the tooling body 100 includes a first surface 101 and a second surface 102 arranged opposite to each other, and a receiving groove 110 is opened in the tooling body 100; the receiving groove 110 is recessed and extends from the first surface 101 to the direction of the second surface 102 to place the photovoltaic module; the receiving groove 110 has a groove bottom wall 110a, and the groove bottom wall 110a is provided with a positioning portion 120 protruding toward the first surface 101, and the positioning portion 120 positions the photovoltaic module.

[0044] In the embodiment of the present application, a receiving groove 110 is provided in the tool body 100, and a receiving groove 110 is provided in the tool body 100.

[0045] The groove 110 can accommodate the photovoltaic module to be laminated, and a positioning portion 120 protruding toward the first surface 101 is provided on the groove bottom wall 110a of the accommodating groove 110, so as to position and fix the photovoltaic module by using the positioning portion 120. In this way, the laminating tooling of the present application can be used to perform hot pressing molding on the photovoltaic module as a whole, and then the photovoltaic module with the frame 230 can be processed in one time, which not only helps to simplify the operation process, but also improves the installation accuracy and connection firmness of the frame 230 and other parts of the photovoltaic module.

[0046] It can be understood that the photovoltaic module lamination tool (hereinafter referred to as the lamination tool) in the embodiment of the present application can be used for the lamination process of the photovoltaic module, and the photovoltaic module includes a battery stack 210, a film layer 220 and a frame 230. Exemplarily, the battery stack 210 may include a front glass, a first packaging film, a battery cell, a second packaging film and a back plate stacked in sequence, and the back plate can at least be understood as a light-transmitting back glass or an opaque back plate. Of course, the specific structure of the battery stack 210 is not limited here.

[0047] In some embodiments, the first surface 101 can be parallel to the second surface 102, and the first surface 101 and the second surface 102 can be planar. The planar here at least means being planar or substantially planar. The upper top surface of the laminating tooling can mean the first surface 101, and the lower bottom surface of the laminating tooling, that is, the lower bottom surface of the groove bottom wall 110a, can mean the second surface 102. Moreover, when the laminating tooling body is rotated 180 degrees for installation, the notch of the accommodating groove 110 faces downward, and the figure mark 110a is still defined as the groove bottom wall. The embodiments of the present application are not limited here.

[0048] Specifically, the frame 230 partially or completely covers the edges of the battery stack 210, and the film layer 220 is arranged between the frame 230 and the battery stack 210. The lamination tooling in the embodiment of the present application can be used to perform hot pressing on the photovoltaic module as a whole, so that the film layer 220 is melted to achieve bonding and fixation between the frame 230 and the battery stack 210.

[0049] In the embodiment of the present application, the laminating tool comprises a tool body 100, in which a receiving groove 110 is provided for accommodating the photovoltaic module to be laminated. Furthermore, a positioning portion 120 protruding toward the first surface 101 is provided on the groove bottom wall 110a of the receiving groove 110, and when the photovoltaic module is placed in the receiving groove 110, the photovoltaic module can be positioned and fixed by the positioning portion 120.

[0050] The positioning portion 120 may be formed or arranged near the middle of the bottom wall 110a of the groove, so that there is a certain gap between the positioning portion 120 and the side wall 110b of the receiving groove 110.

[0051] An accommodating space 120 a is formed between the positioning portion 120 and the side wall 110 b . The frame 230 is at least partially embedded in the accommodating space 120 a . The accommodating space 120 a surrounds the positioning portion 120 .

[0052] When the photovoltaic module is placed in the receiving groove 110, the side wall 110b of the receiving groove 110 and the positioning part 120 cooperate to position the frame 230 of the photovoltaic module. The position of the receiving space 120a corresponds to the position of the frame 230 in the photovoltaic module, and the structure of the receiving space 120a matches the structure of the corresponding part of the frame 230, so that the frame 230 is at least partially embedded in the receiving space 120a, and the positioning part 120 can position the frame 230 of the photovoltaic module. At this time, the part of the battery stack 210 that does not cover the frame 230 on the side facing the groove bottom wall 110a just corresponds to the position of the positioning part 120 and is abutted by the positioning part 120. For example, the positioning part 120 can be a positioning block, and the shape of the positioning block can be a rectangle or other shapes. The specific shape can be flexibly set according to actual conditions, and the embodiment of the present application does not limit this.

[0053] Furthermore, during the lamination operation of the photovoltaic module, the accommodating groove 110 and the positioning portion 120 in the tooling body 100 can be used to position and fix the entire photovoltaic module to avoid large displacement between the cell stack 210, the film layer 220 and the frame 230 during the lamination process, thereby improving the quality of the lamination process.

[0054] Alternatively, if Figure 1 As shown, glue overflow grooves 130 are provided around the edges of the positioning portion 120 .

[0055] In the embodiment of the present application, overflow grooves 130 are provided on the edges of the positioning portion 120 so that during the lamination process, the overflow grooves 130 can be used to accommodate the material of the adhesive film layer 220 that overflows during the lamination process, thereby preventing the overflowed adhesive film layer 220 material from forming a large obstruction on the surface of the photovoltaic module, thereby allowing the laminated photovoltaic module to maintain its appearance.

[0056] Specifically, when the photovoltaic component is placed in the accommodating groove 110, the frame 230 is at least partially located in the accommodating space 120a, the positioning portion 120 is in contact with the battery stack 210, and a film layer 220 is provided between the frame 230 and the battery stack 210. During the lamination process, the film layer 220 is melted by heat and generates a certain flow between the frame 230 and the battery stack 210. At this time, part of the film layer 220 material overflows to the outside of the gap between the frame 230 and the battery stack 210.

[0057] Furthermore, by setting the overflowing glue groove 130 on the edges of the positioning portion 120, the position of the overflowing glue groove 130 corresponds to the glue film layer 220, and the overflowing glue film layer 220 material is collected in the overflowing glue groove 130.

[0058] The flow range of the overflowed adhesive film layer 220 material can be limited.

[0059] Alternatively, if Figure 5 As shown, the whole formed by the groove bottom wall 110 a and the positioning portion 120 is provided with a hollow structure 140 , and the hollow structure 140 is communicated with the accommodating groove 110 .

[0060] In the embodiment of the present application, the groove bottom wall 110a and the positioning portion 120 can be formed and regarded as an integral structure. Accordingly, the integral structure formed by the groove bottom wall 110a and the positioning portion 120 is provided with a hollow structure 140, which can at least mean: along the direction from the second surface 102 to the first surface 101, a hollow structure can be formed by a portion of the groove bottom wall in the groove bottom wall 110a of the tooling body 100 that is not provided with the positioning portion 120 protruding toward the first surface 101, and / or, a connected hollow structure is formed on the groove bottom wall 110a and the positioning portion 120, the hollow structure 140 will penetrate the portion of the groove bottom wall that is not provided with the positioning portion 120 protruding toward the first surface 101, and / or, the hollow structure 140 will simultaneously penetrate the groove bottom wall 110a and the positioning portion 120, so that the hollow structure 140 can be connected with the accommodating groove 110. Furthermore, during the hot pressing process, the heat of the laminating equipment can be more easily transferred to the photovoltaic module to promote the melting of the adhesive film layer 220 in the photovoltaic module. At the same time, by providing the hollow structure 140 in the tool body 100, it is also helpful to reduce the overall weight of the laminating tool, which is convenient for the actual use and operation of the laminating tool.

[0061] Alternatively, if Figure 6 As shown, the hollow structure 140 includes a plurality of through holes 141 , and the plurality of through holes 141 are arranged in sequence and at intervals.

[0062] In some embodiments, the hollow structure 140 can be a separate groove bottom wall 110a that passes through the tooling body 100 and / or one or more through holes in the groove bottom wall 110a and the positioning portion 120. The through holes can be regular holes, such as round holes, square holes, strip holes, waist holes, polygonal holes, etc., or can be irregularly shaped hole structures. They can be flexibly set according to actual conditions, and the embodiments of the present application do not limit this.

[0063] In the embodiment of the present application, a plurality of through holes 141 are provided through the individual groove bottom wall 110a of the tooling body 100, the groove bottom wall 110a and the positioning portion 120, so as to promote the conduction of heat between the laminating equipment and the photovoltaic module through the through holes 141, and at the same time, facilitate the actual design, processing and manufacturing.

[0064] In some embodiments, the plurality of through holes 141 may be arranged in an array, for example, in a rectangular array, a hexagonal array, a circular array, etc., so that the through holes 141 are arranged on the second surface 102.

[0065] The uniform arrangement in the middle makes it easier to improve the uniformity of heating at different positions of the photovoltaic modules during the lamination process.

[0066] Alternatively, if Figure 6 As shown, along the projection in the direction perpendicular to the second surface 102, the spacing between two adjacent through holes 141 is M, which satisfies: 8mm≤M≤25mm. By setting a reasonable value range of the spacing M between two adjacent through holes 141, it is possible to avoid the spacing of the through holes 141 being too small to affect the structural strength of the tooling body 100, and it is also possible to avoid the spacing of the through holes 141 being too large to affect the heat conduction.

[0067] Exemplarily, the interval M between two adjacent through holes 141 can be set to any value such as 8 mm, 10 mm, 13 mm, 15 mm, 18 mm, 20 mm, 22 mm, 25 mm, or a range between any two values.

[0068] It should be noted that the spacing M between two adjacent through holes 141 refers to the projection along the direction perpendicular to the second surface 102, that is, the minimum straight-line distance from a point on the hole wall of one through hole 141 to a point on the hole wall of the other through hole 141 when the two adjacent through holes 141 are projected along the direction perpendicular to the second surface 102.

[0069] Alternatively, if Figure 6 As shown, projected along a direction perpendicular to the second surface 102 , the through hole 141 is a circular hole, and the size of the circular hole is D1 , satisfying: 5 mm ≤ D1 ≤ 20 mm.

[0070] In the embodiment of the present application, by setting the value range of the size D1 of the through hole 141, the through hole 141 can be used to enhance the heat conduction effect, thereby preventing the through hole 141 from being too small to be convenient for actual processing, and preventing the through hole 141 from being too large to cause uneven force on the photovoltaic module during the lamination process, thereby causing the photovoltaic module to be crushed.

[0071] Exemplarily, projected in a direction perpendicular to the second surface 102 , the size D1 of the through hole 141 can be set to any value such as 5 mm, 8 mm, 10 mm, 13 mm, 15 mm, 18 mm, 20 mm, or a range between any two values.

[0072] It should be noted that the size D1 of the through hole 141 refers to the projection along the direction perpendicular to the second surface 102 . The through hole 141 is a circular hole, and the diameter of the circular hole is the size D1 of the through hole 141 .

[0073] Alternatively, if Figure 5As shown, the tool body 100 also includes four side surfaces 103 disposed between the first surface 101 and the second surface 102, and at least one side surface 103 is provided with a magnetic member 150, which is used to magnetically fix the frame 230. The magnetic member 150 can be a permanent magnet, such as a magnet, a magnet, etc.

[0074] In the embodiment of the present application, a magnetic part 150 is provided on the side 103 of the tooling body 100 so that when the frame 230 is loaded into the laminating tooling, the magnetic part 150 can be used to magnetically fix the frame 230, thereby preventing the frame 230 from moving during the assembly and lamination process, thereby helping to improve the lamination quality.

[0075] Among them, the frame 230 can be a steel frame. During operation, the steel frame is installed in the accommodating groove 110 of the tooling body 100, and the steel frame is at least partially embedded in the accommodating space 120a. At the same time, the steel frame is magnetically fixed by the magnetic suction part on the side 103, so as to fix the frame 230 in the tooling body 100.

[0076] It is understandable that the frame 230 is usually a split structure before being installed and fixed to the battery stack 210, that is, the frame 230 includes multiple sub-frames, such as conventional 4-segment sub-frames and 8-segment sub-frames. During assembly, the multiple sub-frames are spliced ​​around the four sides of the battery stack 210 to form an integral structure of the frame 230.

[0077] To this end, in an embodiment of the present application, a magnetic member 150 is provided on the side surface 103 of the tooling body 100 so that when a plurality of sub-frames are respectively loaded into the corresponding accommodating spaces 120a, the corresponding sub-frames can be magnetically fixed by the magnetic member 150 on the side surface 103, thereby avoiding relative movement between the sub-frames and affecting the processing accuracy.

[0078] Alternatively, if Figure 7 As shown, at least three magnetic members 150 are disposed on the side surface 103 , and the at least three magnetic members 150 are arranged in sequence and spaced apart.

[0079] In the embodiment of the present application, at least three magnetic members 150 arranged in sequence are provided on the side 103 of the tooling body 100 so that the two ends and the middle part of the frame 230 corresponding to the side 103 can be magnetically fixed by the magnetic members 150, thereby improving the fixing effect on the frame 230.

[0080] Among them, at least three magnetic parts 150 are arranged in sequence and spaced apart in the corresponding side surface 103 along the circumferential direction of the tooling body 100. The distance between two adjacent magnetic parts 150 can be flexibly set according to actual needs, and the embodiment of the present application does not limit this.

[0081] Optionally, a corner edge is formed at the connection between two adjacent side surfaces 103 , and a distance D2 is between the magnetic member 150 closest to the corner edge in the side surface 103 and the corresponding corner edge, satisfying: 8 mm≤D2≤25 mm.

[0082] In the embodiment of the present application, by setting the magnetic member 150 closest to the corner edge on the side surface 103

[0083] The range of the spacing D2 between the corresponding corner edges is to ensure the magnetic fixing effect on the edge portion of the frame 230, thereby improving the installation accuracy of the splicing part of the frame 230.

[0084] Exemplarily, the distance D2 (at least meaning the straight-line distance) between the magnetic part 150 closest to the corner edge in the side 103 and the corresponding corner edge can be set to any value such as 8mm, 9mm, 10mm, 13mm, 15mm, 20mm, 25mm, or a range between any two values.

[0085] In some embodiments, the method for preparing a photovoltaic module using the lamination tooling in the present application comprises the following steps:

[0086] First, the front glass, the first packaging film, the battery cell, the second packaging film and the backplane are stacked in sequence to form a battery stack 210. Then, the cut film layer 220 is formed or placed on the edges of the backplane, or further, the film layer 220 can be partially melted and pre-fixed with the backplane by heating.

[0087] At the same time, the frame 230 is installed in the receiving groove 110 of the tool body 100, so that the frame 230 is at least partially embedded in the receiving space 120a, so as to assemble and fix the frame 230 with the tool body 100. Then, the battery stack 210 with the adhesive film layer 220 is installed with the laminating tool equipped with the frame 230. For example, the laminating tool equipped with the frame 230 can be installed upside down on the battery stack 210 with the adhesive film layer 220, so as to complete the assembly preparation before lamination; or, the frame 230 is installed on the battery stack 210 with the adhesive film layer 220, and then the battery stack 210 with the adhesive film layer 220 and the frame 230 is installed with the laminating tool, so as to complete the assembly preparation before lamination; finally, the whole assembly structure is moved into the laminating equipment together for hot pressing molding to obtain the photovoltaic module.

[0088] In other embodiments, after the frame 230 is installed in the receiving groove 110 of the tool body 100, the cut film layer 220 can be placed in the notch of the frame 230, or further, the film layer 220 can be partially melted and pre-fixed with the frame 230 by heating. Then, the battery stack 210 is installed with the laminating tool equipped with the film layer 220 and the frame 230, thereby completing the assembly preparation before lamination; finally, the entire assembly structure is moved into the laminating equipment for hot pressing to obtain a photovoltaic module. Among them, the cutting structure of the film layer 220 can be determined according to the matching structure of the frame 230 and the battery stack 210, and the embodiment of the present application is not limited to this.

[0089] Alternatively, if Figure 2 As shown, the embodiment of the present application also provides a photovoltaic module laminate structure, including

[0090] It includes: a battery stack 210, a film layer 220, a frame 230 and a photovoltaic module lamination tooling as in any of the above embodiments, the battery stack 210, the film layer 220 and the frame 230 are all placed in the accommodating groove 110, the frame 230 at least partially covers the edges of the battery stack 210, the film layer 220 is arranged between the frame 230 and the battery stack 210, and the positioning portion 120 also abuts against the battery stack 210.

[0091] In the embodiment of the present application, the laminating tool comprises a tool body 100, and a receiving groove 110 is provided in the tool body 100, and the receiving groove 110 can be used to accommodate the photovoltaic module to be laminated, and a positioning portion 120 protruding toward the first surface 101 is provided on the groove bottom wall 110a of the receiving groove 110, and the positioning portion 120 is also abutted against the battery stack 210, so that the photovoltaic module can be supported, positioned and fixed by the positioning portion 120. In this way, the laminating tool of the present application can be used to perform hot pressing molding on the photovoltaic module as a whole, and then a photovoltaic module with a frame 230 can be obtained in one-time processing, which not only helps to simplify the operation process, reduces the difficulty of installing the battery stack 210 and the frame 230, but also improves the installation accuracy and connection firmness of the frame 230 and other parts of the photovoltaic module.

[0092] In some embodiments, the battery stack 210 may include front glass, a first encapsulation film, a battery cell, a second encapsulation film, and a backplane. Before hot pressing, the battery stack 210 may be stacked, and then the battery stack 210, the film layer 220, and the frame 230 are assembled with a laminating tool and sent to a laminating device, and a photovoltaic module may be obtained after hot pressing.

[0093] Among them, the material of the film layer 220 can be determined based on the first packaging film and the second packaging film. The material of the film layer 220 can be set to be the same or similar to the material of the first packaging film and / or the second packaging film, so that during the hot pressing process, the film layer 220 is fused with the first packaging film and the second packaging film to form an integral structure, which helps to improve the connection firmness between the frame 230 and the battery stack 210.

[0094] Of course, the specific preparation material of the adhesive film layer 220 can be flexibly set according to actual conditions, and the embodiment of the present application does not limit this.

[0095] Alternatively, if Figure 2 As shown, the frame 230 includes a first side portion 231 and a second side portion 232 that are interconnected, the first side portion 231 surrounds and wraps around the outer side of the circumferential side wall of the battery stack 210, the second side portion 232 covers the four edges of the battery stack 210 facing the groove bottom wall 110a, and the second side portion 232 is embedded between the positioning portion 120 and the side wall 110b of the accommodating groove 110.

[0096] In the embodiment of the present application, a accommodating space 120a is defined between the positioning portion 120 and the side wall 110b of the accommodating groove 110, and the structure of the accommodating space 120a is compatible with the structure of the second side portion 232, so that when the frame 230 is installed into the lamination tooling, the second side portion 232 of the frame 230 can be partially or completely embedded in the accommodating space 120a, so that the accommodating space 120a can be utilized to effectively limit the frame 230, thereby improving the lamination processing accuracy.

[0097] In addition, when the second side portion 232 of the frame 230 is embedded in the accommodating space 120a, the first side portion 231 of the frame 230 can be fitted with the surrounding side walls 110b of the accommodating groove 110, so that the accommodating groove 110 can be used to form a surrounding limit for the frame 230, thereby preventing the frame 230 from undergoing a large displacement during the hot pressing process.

[0098] It should be noted that the frame 230 in the embodiment of the present application can be an L-shaped frame or a C-shaped frame, or can be set to a frame 230 of other structures. The accommodating space 120a in the tooling body 100 can be flexibly set according to the specific structure of the frame 230, and the embodiment of the present application is not limited to this.

[0099] Alternatively, if Figure 1 As shown, the frame 230 is an L-shaped frame, and along the direction perpendicular to the second surface 102, the distance from the side surface of the battery stack 210 away from the groove bottom wall 110a to the groove bottom wall 110a is greater than or equal to the distance from the side surface of the frame away from the groove bottom wall to the groove bottom wall; or Figure 8As shown (the battery stack 210 is appropriately simplified), the frame 230 is a C-shaped frame. Along the direction perpendicular to the second surface 102, the distance from the side surface of the frame 230 away from the groove bottom wall 110a to the groove bottom wall 110a is greater than or equal to the distance from the first surface 101 to the groove bottom wall 110a.

[0100] In an embodiment of the present application, along a direction perpendicular to the second surface 102, by setting the distance from the side surface of the battery stack 210 facing away from the groove bottom wall 110a to the groove bottom wall 110a to be greater than or equal to the distance from the side surface of the frame 230 facing away from the groove bottom wall 110a to the groove bottom wall 110a, or the distance from the side surface of the frame 230 facing away from the groove bottom wall 110a to the groove bottom wall 110a is greater than or equal to the distance from the first surface 101 to the groove bottom wall 110a, so that during the lamination process, the lamination equipment applies pressure to the photovoltaic module to thermally press the photovoltaic module as a whole.

[0101] It is understandable that during the hot pressing process, the film layer 220, the first packaging film, the second packaging film, etc. in the photovoltaic module are melted by heat, and a laminating device is required to apply a certain pressure to the photovoltaic module as a whole to ensure that the melted film material can fully flow and fill the photovoltaic module.

[0102] In some embodiments, the side surface of the frame 230 away from the groove bottom wall 110a can be flush with the first surface 101; the frame 230 is an L-shaped frame, and the difference between the distance from the side surface of the battery stack 210 away from the groove bottom wall 110a to the groove bottom wall 110a and the distance from the side surface of the frame 230 away from the groove bottom wall 110a to the groove bottom wall is set within 2mm, preferably 1mm; the frame 230 is a C-shaped frame, and the difference between the distance from the side surface of the frame 230 away from the groove bottom wall 110a to the groove bottom wall 110a and the distance from the first surface 101 to the groove bottom wall 110a is set within 2mm, preferably 1mm. In this way, the lamination requirements can be met, and the tooling body 100 can be used to form an effective limiting effect on the photovoltaic module in the accommodating groove 110 as a whole.

[0103] It should be noted that it can be appropriately simplified to consider that the upper surface of the groove bottom wall 110a is a plane (combined with Figure 1 As shown, opposite to the bottom surface), the upper surface is substantially parallel to the first plane, the second plane, and the side surface of the battery stack 210 away from the bottom wall 110a of the groove (combined with Figure 2 As shown, it can at least mean the upper top surface of the battery stack 210), the side surface of the frame 230 away from the bottom wall 110a of the groove (combined with Figure 2 , Figure 3As shown, it can at least mean the upper top surface of the frame 230). Under reasonable circumstances, the upper surface or lower bottom surface of the groove bottom wall 110a (i.e., the second surface 102) can be used as the basis for calculating the size and difference of the above-mentioned distance, and the selection is made according to the actual situation. The embodiments of the present application do not limit this. Moreover, the photovoltaic module lamination structure described in any of the above embodiments can be the structure presented by the photovoltaic module and the lamination tooling before being placed in the lamination equipment for lamination, or it can be the structure presented by the photovoltaic module and the lamination tooling after being laminated by the lamination equipment. It can be reasonably understood according to the actual situation, and the embodiments of the present application do not limit this.

[0104] Optionally, an embodiment of the present application further provides a photovoltaic module, which is obtained by laminating using the photovoltaic module laminating tooling in any of the above embodiments; or, the photovoltaic module is obtained by laminating using the photovoltaic module laminating structure in any of the above embodiments.

[0105] In the embodiment of the present application, the laminating tool comprises a tool body 100, and a receiving groove 110 is provided in the tool body 100, and the photovoltaic module to be laminated can be accommodated by using the receiving groove 110, and a positioning portion 120 protruding toward the first surface 101 is provided on the groove bottom wall 110a of the receiving groove 110, so as to position and fix the photovoltaic module by using the positioning portion 120. In this way, the laminating tool of the present application can be used to perform hot pressing molding on the photovoltaic module as a whole, and then a photovoltaic module with a frame 230 can be obtained in one-time processing, which not only helps to simplify the operation process, but also improves the installation accuracy and connection firmness of the frame 230 and other parts of the photovoltaic module.

[0106] Optionally, the photovoltaic module includes: a battery stack 210, a frame 230 and a film layer 220, the frame 230 at least partially covers the edges of the battery stack 210, the film layer 220 is arranged between the frame 230 and the battery stack 210, and the frame 230 is bonded and fixed to the battery stack 210 by the film layer 220.

[0107] Optionally, the battery stack includes a front glass, a first packaging film, a battery cell, a second packaging film and a back plate, and the first packaging film, the second packaging film and the film layer are an integrated structure.

[0108] In the example of the present application, the laminating tooling layer in the embodiment of the present application is used to perform hot pressing molding on the battery stack 210, the frame 230 and the film layer 220, so that the film layer 220 and the first packaging film and the second packaging film in the battery stack 210 can be thermally fused to form an integrated structure. In this way, the connection firmness to the frame 230 can be improved, and the overall structural strength of the photovoltaic module can be improved.

[0109] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0110] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A photovoltaic module lamination tool, characterized in that: include: A tooling body, the tooling body includes a first surface and a second surface arranged opposite to each other, and a receiving groove is provided in the tooling body; the receiving groove is recessed and extends from the first surface to the second surface to place the photovoltaic component; the receiving groove has a groove bottom wall, and a positioning portion protruding toward the first surface is provided on the groove bottom wall, and the positioning portion positions the photovoltaic component.

2. The photovoltaic module lamination tooling according to claim 1, characterized in that: A glue overflow groove is provided around the edges of the positioning portion; and / or the photovoltaic component includes a frame, a receiving space is formed between the side wall of the receiving groove and the positioning portion, and the frame is at least partially embedded in the receiving space.

3. The photovoltaic module lamination tooling according to claim 1, characterized in that: The whole formed by the groove bottom wall and the positioning portion is provided with a hollow structure, and the hollow structure is communicated with the accommodating groove.

4. The photovoltaic module lamination tooling according to claim 3, characterized in that: The hollow structure includes a plurality of through holes, and the plurality of through holes are arranged in sequence and at intervals.

5. The photovoltaic module lamination tooling according to claim 4, characterized in that: The first surface is parallel to the second surface, and the first surface and the second surface are planes; And / or, when projected along a direction perpendicular to the second surface, the distance between two adjacent through holes is M, satisfying: 8 mm ≤ M ≤ 25 mm; And / or, projected along a direction perpendicular to the second surface, the through hole is a circular hole, a size of the circular hole is D1, and satisfies: 5mm≤D1≤20mm.

6. The photovoltaic module lamination tooling according to any one of claims 1 to 5, characterized in that: The tool body also includes four side surfaces arranged between the first surface and the second surface, at least one of the side surfaces is provided with a magnetic member, and the magnetic member is used for magnetically fixing the frame in the photovoltaic assembly.

7. The photovoltaic module lamination tooling according to claim 6, characterized in that: At least three magnetic parts are arranged on the side surface, and the at least three magnetic parts are arranged in sequence and at intervals.

8. The photovoltaic module lamination tooling according to claim 7, characterized in that: An angle edge is formed at the connection between two adjacent side surfaces, and the distance between the magnetic part closest to the angle edge on the side surface and the corresponding angle edge is D2, satisfying: 8mm≤D2≤25mm.

9. A photovoltaic module laminate structure, characterized in that: include: A battery stack, a film layer, a frame and a photovoltaic module lamination tooling as described in any one of claims 1 to 8; the battery stack, the film layer and the frame are all placed in the accommodating groove, the frame at least partially covers the four edges of the battery stack, the film layer is arranged between the frame and the battery stack, and the positioning portion also abuts against the battery stack.

10. The photovoltaic module laminate structure according to claim 9, characterized in that: The frame includes a first side portion and a second side portion connected to each other, the first side portion surrounds and covers the outer side of the circumferential side wall of the battery stack, the second side portion covers the four edges of the battery stack facing the bottom wall of the groove, and the second side portion is embedded between the positioning portion and the side wall of the accommodating groove.

11. The photovoltaic module laminate structure according to claim 9 or 10, characterized in that: The frame is an L-shaped frame, and along the direction perpendicular to the second surface, the distance from the side surface of the battery stack facing away from the bottom wall of the groove to the bottom wall of the groove is greater than or equal to the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove; or, the frame is a C-shaped frame, and along the direction perpendicular to the second surface, the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove is greater than or equal to the distance from the first surface to the bottom wall of the groove.

12. The photovoltaic module laminate structure according to claim 11, characterized in that: When the frame is an L-shaped frame, the difference between the distance from the side surface of the battery stack facing away from the bottom wall of the groove to the bottom wall of the groove and the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove is within 2 mm; or, when the frame is a C-shaped frame, the difference between the distance from the side surface of the frame facing away from the bottom wall of the groove to the bottom wall of the groove and the distance from the first surface to the bottom wall of the groove is within 2 mm.

13. A photovoltaic module, characterized in that: The photovoltaic module is obtained by laminating the photovoltaic module laminate structure according to any one of claims 9 to 12.

14. The photovoltaic module according to claim 13, characterized in that: The photovoltaic module includes: a battery stack, a frame and a film layer, wherein the frame at least partially covers the edges of the battery stack, the film layer is arranged between the frame and the battery stack, and the frame is bonded and fixed to the battery stack through the film layer.

15. The photovoltaic module according to claim 14, characterized in that: The battery stack comprises a front glass, a first packaging film, a battery cell, a second packaging film and a back plate, wherein the first packaging film, the second packaging film and the film layer are an integrated structure.

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