Photovoltaic laminated piece and photovoltaic module

Abstract

The utility model provides a photovoltaic laminated piece and a photovoltaic assembly, relates to the field of photovoltaic technology, and aims to solve the technical problem that the photovoltaic assembly is difficult to recycle and disassemble. The photovoltaic laminated piece comprises front plate glass, back plate glass and a battery string array located between the front plate glass and the back plate glass, the front plate glass is formed by splicing a plurality of first glass sheets, and the back plate glass is formed by splicing a plurality of second glass sheets; at least one first splicing seam is arranged among the plurality of first glass sheets, and at least one second splicing seam is arranged among the plurality of second glass sheets; the extending direction of the at least one first splicing seam is perpendicular to the extending direction of the at least one second splicing seam. According to the photovoltaic laminated piece, the front plate glass and the back plate glass are respectively formed by splicing the plurality of glass sheets, and in the process of scrapping and recycling the photovoltaic module, each glass sheet can be respectively and quickly stripped and recycled from the photovoltaic cell string array, so that the energy consumption in the recycling process is reduced, the carbon emission is reduced, and the development of carbon neutralization is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic technology field especially relates to a photovoltaic laminated part, photovoltaic module. BACKGROUND

[0002] The statements in this section merely provide background information related to the utility model and do not necessarily constitute the prior art.

[0003] With the continuous development of new energy industry, the proportion of photovoltaic module demand is getting larger and larger, and it is expected that the number of retired photovoltaic modules after the life cycle will increase sharply in the future. How to deal with the abandoned photovoltaic modules will become the focus. At present, the photovoltaic module recycling mainly has mechanical disassembly, physical disassembly and chemical disassembly methods, for example, the whole photovoltaic module is soaked or heated, and then the layers of the photovoltaic laminated part are disassembled.

[0004] In the related art, the recycling and disassembly method needs to process the whole photovoltaic module, which is difficult to quickly peel off and recycle. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a photovoltaic laminated part and a photovoltaic module to solve the technical problem of difficult recycling and disassembly of photovoltaic modules.

[0006] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0007] Firstly, the utility model provides a photovoltaic laminated part, which comprises a front plate glass, a back plate glass and a battery string array between the front plate glass and the back plate glass, the front plate glass is formed by splicing a plurality of first glass pieces, and the back plate glass is formed by splicing a plurality of second glass pieces.

[0008] The first glass pieces have at least one first splicing joint, and the second glass pieces have at least one second splicing joint.

[0009] The extension direction of the first splicing joint is perpendicular to the extension direction of the second splicing joint.

[0010] According to at least one embodiment of the utility model, among the first splicing joint and the second splicing joint extending in the same direction, the orthographic projection of the first splicing joint on the back plate glass does not overlap with the second splicing joint.

[0011] According to at least one embodiment of the utility model, the battery string array has a plurality of gaps, each first splicing joint is opposite to a corresponding gap, and the gap includes a gap between battery strings or a gap between battery pieces.

[0012] According to at least one embodiment of the present application, the width of the first splicing joint is consistent with the width of the corresponding gap.

[0013] According to at least one embodiment of the present application, the width of the second splicing joint is greater than or equal to the width of the gap.

[0014] According to at least one embodiment of the present application, the edge and / or corner of the first glass sheet is provided with a first chamfer; and / or,

[0015] The edge and / or corner of the second glass sheet is provided with a second chamfer.

[0016] According to at least one embodiment of the present application, the photovoltaic laminate further comprises at least one first insulating strip, which is embedded in the first splicing joint; and / or,

[0017] The photovoltaic laminate further comprises at least one second insulating strip, which is embedded in the second splicing joint.

[0018] According to at least one embodiment of the present application, the photovoltaic laminate further comprises at least one first shading strip, which is arranged on the first insulating strip and located on the side of the first insulating strip away from the array of battery strings; and / or,

[0019] The photovoltaic laminate further comprises at least one second shading strip, which is arranged on the second insulating strip and located on the side of the second insulating strip away from the array of battery strings.

[0020] According to at least one embodiment of the present application, the photovoltaic laminate further comprises at least one first insulating pad strip, which is arranged on the first insulating strip and located on the side of the first insulating strip towards the array of battery strings; and / or,

[0021] The photovoltaic laminate further comprises at least one second insulating pad strip, which is arranged on the second insulating strip and located on the side of the second insulating strip towards the array of battery strings.

[0022] According to at least one embodiment of the present application, the photovoltaic laminate further comprises at least one supporting strip, which is arranged on the second splicing joint, two parts of the supporting strip are respectively attached to the two second glass sheets forming the second splicing joint, and located on the side of the second splicing joint away from the array of battery strings.

[0023] In a second aspect, the present application further provides a photovoltaic module comprising the photovoltaic laminate of the first aspect.

[0024] In one or more of the exemplary embodiments provided in the utility model, at least one of the following beneficial effects can be achieved.

[0025] The photovoltaic laminate of the exemplary embodiment of the utility model, including front plate glass, back plate glass and photovoltaic cell string array between front plate glass and back plate glass, wherein, front plate glass is formed by splicing multiple first glass sheets, back plate glass is formed by splicing multiple second glass sheets. Multiple first glass sheets form first splicing seam after splicing, multiple second glass sheets form second splicing seam after splicing, at least one of first splicing seam is perpendicular to at least one of second splicing seam, can keep front plate glass and back plate glass have certain support strength to photovoltaic laminate. Relative to the disassembly of the photovoltaic module of the whole front plate glass and back plate glass in the prior art, the container and equipment capable of accommodating the whole photovoltaic module are required, the resource energy consumption requirement is high, the applicant pays attention to the recycling and disassembly problem of photovoltaic laminate, forms respectively by splicing multiple glass sheets for front plate glass and back plate glass, in the process of recycling of photovoltaic module, each glass sheet can be quickly stripped and recycled from photovoltaic cell string array by the way of sequentially locally heating a glass sheet, and the energy consumption in the recycling process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings illustrate exemplary embodiments of the present utility model and, together with the general description given above, serve to explain the principles of the present utility model, wherein these drawings are included to provide further understanding of the present utility model, and the drawings are included in the present specification and form part of the present specification;

[0027] Figure 1 It is the structure schematic view of photovoltaic cell string array according to the embodiment of the utility model;

[0028] Figure 2 It is the structure schematic view of front plate glass (two first glass sheets) according to another embodiment of the utility model;

[0029] Figure 3 It is the structure schematic view of back plate glass (two second glass sheets) according to another embodiment of the utility model;

[0030] Figure 4 It is the structure schematic view of front plate glass (two first glass sheets) according to another embodiment of the utility model;

[0031] Figure 5 It is the structure schematic view of back plate glass (two second glass sheets) according to another embodiment of the utility model;

[0032] Figure 6 It is the structure schematic view of front plate glass (four first glass sheets) according to the embodiment of the utility model;

[0033] Figure 7 This is a schematic diagram of the structure of the back glass (nine second glass sheets) according to an embodiment of the present invention;

[0034] Figure 8 This is a structural schematic diagram of the back glass (with support strip) according to an embodiment of the present invention;

[0035] Figure 9 This is a cross-sectional structural schematic diagram of a photovoltaic laminate according to an embodiment of the present invention.

[0036] Figure label:

[0037] 10. Front panel glass; 11. First glass pane; 111. First seam; 112. First chamfer;

[0038] 20. Back panel glass; 21. Second glass pane; 211. Second seam; 212. Second chamfer; 213. Exit hole;

[0039] 30. Support strip;

[0040] 40. Encapsulating film;

[0041] 51. First insulating strip; 52. Second insulating strip;

[0042] 61. First light-blocking strip; 62. Second light-blocking strip;

[0043] 71. First insulating strip; 72. Second insulating strip;

[0044] 80. Battery string array; 81. Gap. Detailed Implementation

[0045] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0046] Figure 9 This is a cross-sectional structural schematic diagram of a photovoltaic laminate according to an embodiment of the present invention. (Refer to...) Figure 9 As shown, in the related technology, the photovoltaic laminate, from the light-receiving surface (front) to the back surface (back), includes a front glass 10, an encapsulating film 40, a cell string array 80, another encapsulating film 40, and a back glass 20 stacked together. After lamination, the encapsulating film 40 fixes the above five layers together to form a photovoltaic laminate.

[0047] For example, the encapsulating film 40 can be a polyethylene-polyvinyl acetate copolymer (EVA) film, a polyolefin elastomer (POE) film, an EVA / POE laminated film, an EVA / POE / EVA laminated film, or a POE / EVA / POE laminated film. After the above five layers are laminated, they are placed in a laminator, where heating and pressure melt the two encapsulating films 40, forming a strong bond between the layers, thereby forming the finished photovoltaic laminate.

[0048] When a frame is attached to the perimeter of the photovoltaic laminate, a photovoltaic module is formed. In related technologies, both the front glass 10 and the back glass 20 are single pieces of glass, serving to protect and seal the cell string array 80. It should be noted that the cell string array 80 refers to a photovoltaic cell string formed by connecting multiple photovoltaic cells together. These strings are electrically connected by solder strips and then electrically connected to each solder strip via busbars. The current is collected in the busbars, which extend from the back of the photovoltaic laminate and transmit the current to the inverter and grid via a junction box.

[0049] As photovoltaic modules are decommissioned at the end of their foreseeable future lifespan, applicants are concerned that the entire dismantling process of photovoltaic modules is time-consuming and labor-intensive, which is not conducive to low-carbon and environmentally friendly recycling.

[0050] To address the aforementioned issues, the photovoltaic laminate of the exemplary embodiment of this utility model is formed by splicing multiple glass sheets together to form the front glass 10 and the back glass 20, and at least one first splice seam 111 of the front glass 10 intersects with at least one second splice seam 211 of the back glass 20 to maintain the overall strength of the photovoltaic module.

[0051] The photovoltaic laminate of an exemplary embodiment of this utility model includes a front glass panel 10, a back glass panel 20, and a battery string array 80 located between the front glass panel 10 and the back glass panel 20. The front glass panel 10 is formed by splicing multiple first glass sheets 11, and the back glass panel 20 is formed by splicing multiple second glass sheets 21. There is at least one first splicing seam 111 between the multiple first glass sheets 11, and there is at least one second splicing seam 211 between the multiple second glass sheets 21. The extension direction of the at least one first splicing seam 111 is perpendicular to the extension direction of the at least one second splicing seam 211.

[0052] It should be noted that the number of first glass sheets 11 forming the front glass 10 and the number of second glass sheets 21 forming the back glass 20 are determined according to the actual required strength of the photovoltaic module and the sealing protection requirements.

[0053] For example, the first glass plate 11 consists of two pieces, and the second glass plate 21 also consists of two pieces, such as... Figures 2-3 As shown, Figure 2 This is a schematic diagram of the structure of the front panel glass 10 (two first glass sheets 11) according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the back glass 20 (two second glass sheets 21) according to an embodiment of the present invention.

[0054] For example, the front glass 10 is formed by splicing two first glass sheets 11 distributed along the second direction, and the first splicing seam 111 formed extends along the first direction; the back glass 20 is formed by splicing two second glass sheets 21 distributed along the first direction, and the second splicing seam 211 formed extends along the second direction; the first splicing seam 111 and the second splicing seam 211 are perpendicular to each other, so that this kind of cross-shaped split structure can maintain sufficient strength of photovoltaic laminate and will not break the battery string array 80.

[0055] For example, the two first glass sheets 11 are the same size and the two second glass sheets 21 are the same size, so that the second splicing seam 211 on the back glass 20 is located in the middle in the first direction. This is the lead-out position of the busbar of the battery string array 80. Therefore, the lead-out wire of the busbar can extend from the second splicing seam 211 to connect to the junction box without drilling holes in the back glass 20. This can avoid the occurrence of hidden cracks in the back glass 20 that are easily caused by drilling holes, reduce the breakage rate and reduce costs.

[0056] Since both the back glass 20 and the front glass 10 are formed by splicing two pieces of glass, reducing the size of the glass pieces can effectively reduce the size of glass processing equipment, increase space and energy utilization, and thus improve the production yield of the back glass 20 and the front glass 10.

[0057] When the photovoltaic module is recycled and dismantled, the glass can be easily dismantled by heating or soaking one glass sheet at a time. Only a container and equipment large enough to hold half of the photovoltaic module are needed, which reduces the requirements for resource and energy consumption.

[0058] In another alternative implementation, such as Figure 4 and Figure 5 As shown, the front glass panel 10 is formed by splicing two first glass sheets 11 distributed along a first direction, with the first splicing seam 111 extending along a second direction; the back glass panel 20 is formed by splicing two second glass sheets 21 distributed along a second direction, with the second splicing seam 211 extending along the first direction; the first splicing seam 111 and the second splicing seam 211 are perpendicular to each other, thus this cross-shaped split structure can maintain sufficient strength of the photovoltaic laminate and will not break the cell string array 80. Figure 4This is a schematic diagram of the structure of the front panel glass 10 (two first glass sheets 11) according to another embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the back glass 20 (two second glass sheets 21) according to another embodiment of the present invention;

[0059] For example, the two first glass sheets 11 are the same size and the two second glass sheets 21 are the same size, so that the second splicing seam 211 on the back glass 20 is located in the middle of the second direction. At this time, it is necessary to open the lead-out hole 213 at the lead-out position of the busbar of the two second glass sheets 21 respectively, so as to lead the current to the junction box.

[0060] When there are multiple first splice seams 111 and multiple second splice seams 211, it is possible that one of the multiple first splice seams 111 is completely opposite to one of the multiple second splice seams 211, resulting in insufficient support strength of the back panel glass 20 and front panel glass 10 for the photovoltaic laminate at the position where the splice seams are completely opposite.

[0061] For example, the front glass 10 is composed of four first glass panels 11 joined together, and the back glass 20 is composed of nine second glass panels 21 joined together. Figure 6 and Figure 7 As shown, where, Figure 6 This is a schematic diagram of the structure of the front panel glass 10 (four first glass sheets 11) according to an embodiment of the present invention;

[0062] Figure 7 This is a schematic diagram of the structure of the back glass 20 (nine second glass sheets 21) according to an embodiment of the present invention.

[0063] When all the first glass sheets 11 and the second glass sheets 21 are the same size, if the number of second glass sheets 21 in the back glass 20 is also four, the seams formed by the front glass 10 and the back glass 20 will be completely opposite, which is not conducive to the overall strength of the photovoltaic laminate. Therefore, the number of second glass sheets 21 is set to nine, which is different from the four first glass sheets 11 in the front glass 10.

[0064] In some embodiments, in the photovoltaic laminate of the exemplary embodiment of the present invention, the first splicing seam 111 and the second splicing seam 211 extending in the same direction do not overlap with the orthographic projection of the first splicing seam 111 on the back glass 20.

[0065] like Figure 6 As shown, a first seam 111 extending in a first direction and a first seam 111 extending in a second direction are formed on the front glass panel 10. Figure 7As shown, two second seams 211 extending along a first direction and two second seams 211 extending along a second direction are formed on the back glass 20. Figure 6 and Figure 7 As shown, the orthographic projection of the first seam 111 extending along the first direction onto the back glass 20 lies between the two second seams 211 extending along the first direction, without overlapping them, but with a certain distance between them. Simultaneously, the orthographic projection of the first seam 111 extending along the second direction onto the back glass 20 lies between the two second seams 211 extending along the second direction, without overlapping them, but with a certain distance between them. Therefore, the intersecting first seams 111 on the front glass 10 and the intersecting second seams 211 on the back glass 20 are staggered, thus avoiding the problem of the first seams 111 and the second seams 211 completely overlapping, which would reduce the overall structural strength of the photovoltaic laminate.

[0066] When the back panel glass 20 is spliced ​​together from nine second glass sheets 21, and there is no suitable second splicing seam 211 corresponding to the position of the busbar lead-out line of the battery string array 80, it is necessary to open lead-out holes 213 on each corresponding second glass sheet 21 in order to lead the current to the junction box.

[0067] Considering that the first splice seam 111 is formed on the front glass 10, that is, the light-receiving surface of the photovoltaic laminate, it may affect the utilization of light by the cells in the battery string array 80.

[0068] Figure 1 This is a schematic diagram of a photovoltaic cell string array according to an embodiment of the present invention. (See attached diagram.) Figure 1 and Figure 9 As shown, there are multiple gaps 81 between battery strings in the battery string array 80, or multiple gaps 81 between battery cells in the battery string.

[0069] In the photovoltaic laminate of the exemplary embodiment of this utility model, the first splicing seam 111 is adapted to be disposed above the gap 81 of the battery string array 80, that is, the first splicing seam 111 is opposite to the corresponding gap 81.

[0070] For example, the width of the first splicing seam 111 is the same as the width of the corresponding gap 81, so as to reduce the attenuation of light by the first splicing seam 111, so that the battery string array can make full use of light and improve the photoelectric conversion efficiency. The width of the first splicing seam 111 is also the distance between the two first glass plates 11, and the width of the first splicing seam 111 can be 1.5mm to 2mm.

[0071] In some embodiments, the width of the second splice seam 211 is greater than or equal to the width of the gap 81. The width of the second splice seam 211 can be 2mm to 7mm, for example, 3mm, 4mm, 5mm, 6mm, etc. When the second splice seam 211 is located at the busbar lead-out position of the battery string array 80, the width of the second splice seam 211 is sufficient to lead out the busbar, thereby avoiding the problem of easy breakage caused by opening holes in the second glass sheet 21.

[0072] In some embodiments, the edges and / or corners of the first glass sheet 11 are provided with a first chamfer 112; the edges and / or corners of the second glass sheet 21 are provided with a second chamfer 212.

[0073] Since the front glass panel 10 is formed by splicing together first glass sheets 11, which are rectangular in shape, the second glass sheet 21 is also rectangular in shape. The two rectangular first glass sheets 11 may break due to mutual compression at the first splicing seam 111 caused by thermal expansion and contraction. Therefore, by polishing the edges of the first glass sheets 11 to form a rectangular or curved first chamfer 112, and also providing a first chamfer 112 at the corners, it can prevent breakage due to mutual compression and also prevent the edges from being too sharp and easily damaged. At the same time, by providing a certain gap at the edges and corners with the first chamfer 112, it is also beneficial to apply force to the gaps using tools during disassembly, making disassembly easier.

[0074] For the same reason that the first chamfer 112 is provided on the first glass sheet 11, the edges and / or corners of the second glass sheet 21 are also provided with a second chamfer 212, which will not be described in detail here.

[0075] Considering the reliability of photovoltaic modules during outdoor use, the photovoltaic laminate of the exemplary embodiment of this utility model uses insulating material for sealing and bonding treatment at the first splice seam 111 and the second splice seam 211.

[0076] like Figure 9 As shown, the photovoltaic laminate also includes at least one first insulating strip 51, which is embedded in the first splice seam 111; the photovoltaic laminate also includes at least one second insulating strip 52, which is embedded in the second splice seam 211.

[0077] A first insulating strip 51 is embedded in each first splice seam 111, and a second insulating strip 52 is embedded in each second splice seam 211 to prevent moisture intrusion. Both the first insulating strip 51 and the second insulating strip 52 are high water-resistant insulating materials, such as butyl rubber, epoxy resin, polyimide, silicone rubber, polytetrafluoroethylene, etc. The above materials all have good electrical insulation and water-proof properties, good airtightness, and good aging resistance.

[0078] For example, the cross-sectional shape of the first insulating strip 51 and the second insulating strip 52 can be conical, triangular, rectangular, etc. The thickness of the first insulating strip 51 or the second insulating strip 52 is greater than the thickness of the front glass 10. For example, it can be 2mm to 3mm thicker than the thickness of the first glass sheet 11 or the second glass sheet 21. The thickness and cross-sectional shape of each insulating strip can fully fill the corresponding splice seam in the subsequent photovoltaic laminate lamination process. For example, the large end of the conical cross-section is exposed outside the splice seam. During lamination, under certain pressure and temperature conditions, the insulating strip will be completely embedded into the corresponding splice seam. The pre-tightening force makes the insulating strip achieve a completely sealed state, thereby maintaining the good adhesion, water resistance and sealing performance of the photovoltaic laminate.

[0079] In some implementations, such as Figure 9 As shown, the photovoltaic laminate also includes at least one first shading strip 61, which covers the first insulating strip 51 and is located on the side of the first insulating strip 51 away from the battery string array 80; the photovoltaic laminate also includes at least one second shading strip 62, which covers the second insulating strip 52 and is located on the side of the second insulating strip 52 away from the battery string array 80.

[0080] The first light-shielding strip 61 is disposed on the light-receiving surface of the first glass sheet 11 of the front panel glass 10, covering the first insulating strip 51 to minimize the risk of aging and failure of the first insulating strip 51 due to light exposure. For example, the first light-shielding strip 61 is fixed to the first glass sheet 11 by adhesive. Exemplarily, the second light-shielding strip 62 is disposed on the back side of the second glass sheet 21 of the back panel glass 20 to minimize the risk of aging and failure of the second insulating strip 52 due to light exposure.

[0081] For example, the first light-shielding strip 61 and the second light-shielding strip 62 can be made of polymethyl methacrylate (PMMA), polycarbonate (PC), etc., which have a light-shielding effect by adding carbon black or other coloring agents. Both PMMA and PC materials have good optical properties and weather resistance, which can delay the aging of the corresponding insulation strips. In addition, the first light-shielding strip 61 and the second light-shielding strip 62 also have the effect of sealing the corresponding splice seams with moisture.

[0082] Continue as Figure 9As shown, the photovoltaic laminate of the exemplary embodiment of the present invention further includes at least one first insulating strip 71, which covers the first insulating strip 51 and is located on the side of the first insulating strip 51 facing the battery string array 80; the photovoltaic laminate also includes at least one second insulating strip 72, which covers the second insulating strip 52 and is located on the side of the second insulating strip 52 facing the battery string array 80.

[0083] For example, the first insulating strip 71 and the second insulating strip 72 can be made of a series of insulating, weather-resistant, and flexible materials such as thermoplastic polyester (TPT), thermoplastic elastomer (TPE), and polyethylene terephthalate (PET). For example, a very thin layer of ethylene-vinyl acetate copolymer (EVA) film or poly(ethylene-1-octene) (POE) film can be coated on the PET first insulating strip 71, thereby adhering it to the side of the first insulating strip 51 and the first glass sheet 11 facing the battery string array 80.

[0084] For example, the first insulating pad 71 and the second insulating pad 72 can be one or more of PET film, PET / EVA composite film, EVA / PET / EVA composite film, PET / POE composite film or POE / PET / POE composite film.

[0085] Because a second seam 211 exists between the two spliced ​​second glass sheets 21, and the busbar of the battery string array 80 is located below the second seam 211, this will reduce the creepage distance. Therefore, setting a second insulating pad 72 between the second insulating strip 52 and the battery string array 80 for isolation can effectively reduce the impact of the above-mentioned defect. Setting a first insulating pad 71 between the first insulating strip 51 and the battery string array 80 can also reduce the impact of the shortened creepage distance. In addition, the first insulating pad 71 and the second insulating pad 72 also have the effect of sealing the corresponding splice seam with moisture.

[0086] Figure 8 This is a structural schematic diagram of the back glass (with support strip) according to an embodiment of the present invention. Figure 8 and Figure 9As shown, the photovoltaic laminate of the exemplary embodiment of the present invention further includes at least one support strip 30, which covers the second splice seam 211. Two portions of the support strip 30 are respectively attached to the two second glass sheets 21 forming the second splice seam 211 and are located on the side away from the battery string array 80.

[0087] For example, the support strip 30 can be a glass strip, and the number of support strips 30 can fully meet the requirements of covering each second splice seam 211. It can be attached to the back glass 20 with EVA film and cover the second insulating strip 52 and the first insulating pad 71. That is, the support strip 30 can serve to connect the two second glass sheets 21.

[0088] When the back panel glass 20 is spliced ​​from multiple second glass sheets 21, the resulting multiple second splicing seams 211 may reduce the overall support strength of the back panel glass 20. By setting support strips 30 on each second splicing seam 211, and bonding the portions on both sides of the support strips 30 to the two second glass sheets 21 that form the second splicing seam 211, the splicing position of the two second glass sheets 21 is guaranteed to have a certain rigidity, thereby ensuring the overall strength of the photovoltaic laminate.

[0089] As can be seen from the above, in the photovoltaic laminate of the exemplary embodiment of this utility model, the front glass and the back glass adopt a separate structure, which can save resources and reduce energy consumption during the recycling of waste photovoltaic modules. With the reduction in the size of the front glass and the back glass, the recycling device can be reduced in size accordingly, optimizing the equipment. The reduced size of the front glass and the back glass also makes the processing more convenient and improves efficiency.

[0090] An exemplary embodiment of this utility model also provides a photovoltaic module, including the photovoltaic laminate of the above embodiments.

[0091] After lamination, photovoltaic laminates require a protective outer shell to be wrapped around their peripheral edges to provide mechanical support and protection. This protective shell is the frame or assemblies, and photovoltaic laminates with the frames or assemblies installed form photovoltaic modules.

[0092] The technological advantages of the aforementioned photovoltaic modules compared to existing technologies are the same as those of the aforementioned photovoltaic laminates, and will not be repeated here.

[0093] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A photovoltaic laminate, characterized in that, It includes a front glass panel, a back glass panel, and a battery string array located between the front glass panel and the back glass panel. The front glass panel is formed by splicing together multiple first glass panels, and the back glass panel is formed by splicing together multiple second glass panels. There is at least one first seam between the multiple first glass sheets, and at least one second seam between the multiple second glass sheets; The extension direction of at least one of the first seams is perpendicular to the extension direction of at least one of the second seams.

2. The photovoltaic laminate according to claim 1, characterized in that, In the first and second seams extending in the same direction, the orthographic projection of the first seam on the back glass does not overlap with the second seam.

3. The photovoltaic laminate according to claim 1, characterized in that, The battery string array has multiple gaps, with each of the first splicing seams opposite to the corresponding gap. The gaps include the gaps between battery strings or the gaps between battery cells.

4. The photovoltaic laminate according to claim 3, characterized in that, The width of the first seam is the same as the width of the corresponding gap.

5. The photovoltaic laminate according to claim 3, characterized in that, The width of the second seam is greater than or equal to the width of the gap.

6. The photovoltaic laminate according to claim 1, characterized in that, The first glass sheet has a first chamfer on its edge and / or corner; and / or, The second glass sheet has a second chamfer on its edge and / or corner.

7. The photovoltaic laminate according to any one of claims 1-6, characterized in that, The photovoltaic laminate further includes at least one first insulating strip, which is embedded in the first splice seam; and / or, The photovoltaic laminate also includes at least one second insulating strip, which is embedded in the second splice seam.

8. The photovoltaic laminate according to claim 7, characterized in that, The photovoltaic laminate further includes at least one first shading strip, which covers the first insulating strip and is located on the side of the first insulating strip opposite to the battery string array; and / or, The photovoltaic laminate also includes at least one second shading strip, which covers the second insulating strip and is located on the side of the second insulating strip away from the battery string array.

9. The photovoltaic laminate according to claim 7, characterized in that, The photovoltaic laminate further includes at least one first insulating strip, which covers the first insulating strip and is located on the side of the first insulating strip facing the battery string array; and / or, The photovoltaic laminate also includes at least one second insulating strip, which covers the second insulating strip and is located on the side of the second insulating strip facing the battery string array.

10. A photovoltaic module, characterized in that, Includes the photovoltaic laminate as described in any one of claims 1-9.

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