A photovoltaic module

Abstract

The application discloses a photovoltaic module, comprising a non-glass photovoltaic module fixedly installed on a glass photovoltaic module, the glass photovoltaic module serving as a mounting base of the non-glass photovoltaic module, wherein the glass photovoltaic module at least comprises a front glass, and the non-glass photovoltaic module does not comprise glass; the application realizes recycling of waste glass photovoltaic modules in a whole new power generation working cycle of the non-glass photovoltaic module, greatly simplifies a recycling process of the waste glass photovoltaic module, and is favorable for improving the installation performance of the light-weight non-glass photovoltaic module.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic power generation, and specifically relates to a photovoltaic module. Background Technology

[0002] Because photovoltaic modules have a lifespan (usually 15-25 years), with the rapid development of the photovoltaic module installation market in the past decade, it is expected that a large number of waste photovoltaic modules will be needed for recycling in the next 10-15 years.

[0003] Currently, the most typical and commonly used photovoltaic modules are still glass-encapsulated photovoltaic modules (referred to as glass photovoltaic modules). Since glass is heavy and constitutes the heaviest part of a photovoltaic module, existing technologies for recycling waste glass photovoltaic modules all involve cumbersome and costly dismantling, followed by recycling of various materials from the waste glass photovoltaic modules. As a result, the recycling efficiency remains relatively low.

[0004] Therefore, the applicant seeks technical solutions to improve this. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a photovoltaic module that enables the recycling and reuse of waste glass photovoltaic modules during the new power generation cycle of non-glass photovoltaic modules, greatly simplifies the recycling process of waste glass photovoltaic modules, and improves the installation performance of lightweight non-glass photovoltaic modules.

[0006] The technical solution adopted in this invention is as follows:

[0007] A photovoltaic module includes a non-glass photovoltaic module fixedly mounted on a glass photovoltaic module, wherein the glass photovoltaic module serves as the mounting base for the non-glass photovoltaic module, and the glass photovoltaic module includes at least a front glass panel, while the non-glass photovoltaic module does not include glass.

[0008] Preferably, the non-glass photovoltaic module is connected to the grid or connected to a battery; the glass photovoltaic module is either not connected to the grid or connected to the grid, or the glass photovoltaic module is either not connected to a battery or connected to a battery.

[0009] Preferably, the glass photovoltaic module has been installed and generating electricity for at least 10 years before the non-glass photovoltaic module is installed on the glass photovoltaic module.

[0010] Preferably, the glass photovoltaic module includes at least a front glass, a first cell string layer, and a back encapsulation portion encapsulated as one piece; or, the glass photovoltaic module includes at least a front glass, a front encapsulating film layer, a first cell string layer, and a first back encapsulating film layer and a first back sheet as the back encapsulation portion encapsulated as one piece; wherein, the first back sheet includes the back glass or does not include the back glass; and / or, the glass photovoltaic module includes a frame located around or partially around the edges.

[0011] Preferably, the weight of the glass photovoltaic module is greater than 5 kg / m³. 2 ; and / or the thickness of the front glass is 1-15mm, preferably 2-10mm, more preferably 3-6mm; and / or the thickness of the glass photovoltaic module is 5-35mm, preferably 5-20mm.

[0012] Preferably, the glass photovoltaic module is mounted on a bracket or mounting base.

[0013] Preferably, the weight of the non-glass photovoltaic module is no more than 5 kg / m³. 2 Preferably, it should not exceed 4.5 kg / m 2 More preferably 1-3.5 kg / m 2 ; and / or the thickness of the non-glass photovoltaic module is 0.5-6mm, preferably 0.8-5mm, more preferably 1-4mm; and / or the weight of the non-glass photovoltaic module is less than the weight of the glass photovoltaic module; and / or the thickness of the non-glass photovoltaic module is less than the thickness of the glass photovoltaic module.

[0014] Preferably, the non-glass photovoltaic module includes at least a front non-glass encapsulation part, a second cell string layer, and a back non-glass encapsulation part that are encapsulated as a single unit, wherein the back non-glass encapsulation part and the front glass are connected in an upper and lower stacked manner.

[0015] Preferably, the thickness of the non-glass encapsulation portion on the back is 0.05-3mm, more preferably 0.2-2mm.

[0016] Preferably, the non-glass photovoltaic module is fixedly installed on the glass photovoltaic module by adhesive bonding and / or fastening.

[0017] Preferably, the junction box of the non-glass photovoltaic module is located on the front of the non-glass photovoltaic module.

[0018] The applicant discovered that although waste glass photovoltaic modules (which typically operate for at least 10 years) exhibit significant degradation in power generation performance and low efficiency, making them unsuitable for occupying installation space as power generation devices, the applicant was pleasantly surprised to find that the overall encapsulation structure of waste glass photovoltaic modules still performs excellently. Because their front side uses glass as the encapsulation structure, it possesses excellent structural strength, insulation resistance, and water vapor permeability, making it highly suitable as a back-reinforcement encapsulation structure for non-glass photovoltaic modules (with lightweight properties). Non-glass photovoltaic modules do not require additional back-reinforcement encapsulation structures such as honeycomb core layers during installation, enabling the recycling and reuse of waste glass photovoltaic modules within the new power generation cycle of (lightweight) non-glass photovoltaic modules. This greatly simplifies the recycling process of waste glass photovoltaic modules and improves the installation performance of lightweight non-glass photovoltaic modules. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the installation process of the photovoltaic module in Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the installation process of the photovoltaic module in Embodiment 2 of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation process of the photovoltaic module in Embodiment 3 of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the photovoltaic module after installation in Embodiment 3 of the present invention;

[0023] Figure 5 This is a schematic diagram of the installation process of the photovoltaic module in Embodiment 4 of the present invention;

[0024] Figure 6 yes Figure 5 Enlarged view of the structure at point A in the image;

[0025] Figure 7 This is a schematic diagram of the structure of the photovoltaic module after installation in Embodiment 4 of the present invention;

[0026] Figure 8 This is a schematic diagram of the installation process of the photovoltaic module in Embodiment 5 of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the photovoltaic module after installation in Embodiment 5 of the present invention;

[0028] Figure 10 yes Figure 9 Enlarged view of the structure at point B in the image;

[0029] Figure 11 yes Figure 9 Enlarged view of the structure at point C in the image;

[0030] Figure 12 This is a schematic diagram of the installation process of the photovoltaic module in Embodiment 6 of the present invention. Detailed Implementation

[0031] This embodiment proposes a photovoltaic module, including a non-glass photovoltaic module fixedly mounted on a glass photovoltaic module. The glass photovoltaic module serves as the mounting base for the non-glass photovoltaic module. The glass photovoltaic module includes at least a front glass panel, while the non-glass photovoltaic module does not include glass.

[0032] Preferably, in this embodiment, the non-glass photovoltaic module is connected to the grid or connected to a battery; more preferably, in this embodiment, the glass photovoltaic module has been installed and generating electricity for at least 10 years before the non-glass photovoltaic module is installed on the glass photovoltaic module, more preferably for more than 15-20 years; in specific implementation, this embodiment selects a used glass photovoltaic module as the glass photovoltaic module, and its front glass should not have obvious cracks; wherein, the glass photovoltaic module is not connected to the grid or is not included in the battery, or the glass photovoltaic module can be selected to be connected to the grid or connected to the battery according to actual needs.

[0033] Preferably, in this embodiment, the glass photovoltaic module includes at least a front glass, a first battery string layer, and a back encapsulation portion encapsulated as one piece; more preferably, in this embodiment, the glass photovoltaic module includes at least a front glass, a front encapsulant layer (also referred to as a sealing portion), a first battery string layer, a first back encapsulant layer (also referred to as a sealing portion), and a first back sheet, which serve as the back encapsulation portion; wherein, the first back sheet may or may not include the back glass, and this application has no limitation on this; and / or, preferably, in this embodiment, the glass photovoltaic module includes a frame located around or partially at the edges. When the glass photovoltaic module has a frame structure, non-glass photovoltaic modules can achieve a fixed installation effect between themselves and the glass photovoltaic module by establishing a fastening relationship with the frame.

[0034] Preferably, in this embodiment, the weight of the glass photovoltaic module is greater than 5 kg / m². 2 The thickness of the front glass is 1-15 mm, preferably 2-10 mm, more preferably 3-6 mm; and / or the thickness of the glass photovoltaic module is 5-35 mm, preferably 5-20 mm.

[0035] Preferably, in this embodiment, the glass photovoltaic module is mounted on a bracket or mounting base, but it can also be mounted in other suitable scenarios. This embodiment does not impose any particular restrictions on this.

[0036] It should be noted that the glass photovoltaic modules involved in this application can be any glass photovoltaic module known in the prior art (it can be a single-glass glass photovoltaic module on the front side, or a double-glass glass photovoltaic module on both the front and back sides). This embodiment does not have any particular limitation on this. Those skilled in the art can further install non-glass photovoltaic modules on these waste or glass photovoltaic modules with significantly low power generation efficiency, realizing the recycling and reuse of waste glass photovoltaic modules within the new power generation working cycle of non-glass photovoltaic modules. This greatly simplifies the recycling process of waste glass photovoltaic modules and is beneficial to improving the installation performance of lightweight non-glass photovoltaic modules.

[0037] To facilitate rapid installation and integration of non-glass photovoltaic modules and glass photovoltaic modules, and to leverage the glass photovoltaic module as an excellent back-side reinforcement encapsulation structure for the non-glass photovoltaic module, this embodiment employs a lightweight photovoltaic module for the non-glass photovoltaic module; preferably, in this embodiment, the weight of the non-glass photovoltaic module does not exceed 5 kg / m². 2 Preferably, it should not exceed 4.5 kg / m 2 More preferably 1-3.5 kg / m 2 ; and / or preferably, in this embodiment, the thickness of the non-glass photovoltaic module is 0.5-6 mm, more preferably 0.8-5 mm, and more preferably 1-4 mm; and / or preferably, in this embodiment, the weight of the non-glass photovoltaic module is less than the weight of the glass photovoltaic module; and / or preferably, in this embodiment, the thickness of the non-glass photovoltaic module is less than the thickness of the glass photovoltaic module.

[0038] Preferably, in this embodiment, the non-glass photovoltaic module includes at least a front non-glass encapsulation portion, a second cell string layer, and a back non-glass encapsulation portion encapsulated as a single unit. The back non-glass encapsulation portion is stacked and connected to the front glass in an upper and lower layer configuration. Preferably, in this embodiment, the area (specifically, its front projected area) of the back non-glass encapsulation portion and the front glass can be set to be equal or close. More preferably, in this embodiment, the second cell string layer can be any known cell string layer, such as a polycrystalline silicon cell string layer, a monocrystalline silicon cell string layer, an amorphous silicon cell string layer, or a cell string layer made of other crystalline or amorphous materials. In terms of the shape of the cell, it can be a whole cell, a 1 / 2 slice, a 1 / 4 slice, or a 1 / 5 slice. Other specifications of slices or stacked battery strings are used; preferably, in this embodiment, the front non-glass encapsulation part can be composed of one or more known front encapsulation material layers (including photovoltaic front panel, encapsulation film, etc.), wherein the photovoltaic front panel preferably adopts a front encapsulation material layer with excellent light transmission and weather resistance, specifically the encapsulation layer material proposed in CN106299000B; the back non-glass encapsulation part can also adopt one or more known back encapsulation material layers (including encapsulation film, photovoltaic backsheet, etc.), wherein the photovoltaic backsheet preferably adopts a back encapsulation material layer with good insulation and water vapor transmission barrier, specifically the encapsulation layer material proposed in CN211555907U.

[0039] Preferably, in this embodiment, the non-glass encapsulation portion on the back of the non-glass photovoltaic module does not need to be provided with a plate reinforcement structure having a skeleton core layer (e.g., a honeycomb core layer). More preferably, in this embodiment, the thickness of the non-glass encapsulation portion on the back of the non-glass photovoltaic module is 0.05-3mm, and more preferably 0.2-2mm.

[0040] Preferably, in order to facilitate a tight, stacked contact between the non-glass photovoltaic module and the glass photovoltaic module, in this embodiment, the junction box of the non-glass photovoltaic module is located on the front side of the non-glass photovoltaic module.

[0041] Preferably, in this embodiment, the non-glass photovoltaic module is fixedly installed on the glass photovoltaic module by adhesive bonding and / or fastening. The adhesive bonding method includes adhesive or tape bonding or hot-melt bonding, etc. In practice, it can be directly bonded or bonded with the help of auxiliary structures, such as using strip structures for bonding. The fastening method includes pressure block fastening installation or conventional fastener (such as screw fasteners) fastening installation, or other forms of adhesive bonding or fastening method. This embodiment does not limit this to a single method.

[0042] It should be noted that the photovoltaic module weight data involved in this application is obtained by weighing the photovoltaic module using a known weighing tool, measuring the dimensions of the photovoltaic module using a known dimensional measuring tool, calculating the area of ​​the photovoltaic module (that is, the projected area after frontal projection of the module), and then dividing the weight by the area of ​​the photovoltaic module to obtain the photovoltaic module weight data recorded in this application; the thickness involved in this application can be obtained by measuring it using a known thickness measuring tool.

[0043] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0044] Example 1: Based on the above implementation scheme, please refer to... Figure 1 As shown, this embodiment 1 proposes a photovoltaic module 10, including a plurality of glass photovoltaic modules 11 (single-glass modules, weighing 10 kg / m²) mounted on a planar mounting bracket 13. 2 (with a thickness of 8mm), among which, the glass photovoltaic module 11 has been installed and generated electricity for more than 10 years, and its power generation efficiency is low. It belongs to waste glass photovoltaic modules and faces the problem of dismantling and recycling.

[0045] In this embodiment, the photovoltaic modules 11 described above are respectively fixedly installed with the products provided by Shangmai (Zhenjiang) New Energy Technology Co., Ltd. by adhesive bonding. Photovoltaic module 12, The overall weight of the photovoltaic module 12 does not exceed 3 kg / m 2 The thickness is 2mm; among which, The junction box 121 of the photovoltaic module 12 is located at The front of photovoltaic module 12.

[0046] each The wiring and grid connection methods between photovoltaic modules 12 all adopt known technologies, and will not be described in detail in this embodiment.

[0047] Example 2: The remaining technical solutions of Example 2 are the same as those of Example 1, except that: Please refer to... Figure 2 As shown, this embodiment 2 proposes a photovoltaic module 20, which includes several glass photovoltaic modules 21 installed on an inclined mounting bracket 23. The glass photovoltaic modules 21 have been installed and generated electricity for more than 14 years, and their power generation efficiency is low. They are considered waste glass photovoltaic modules and face the problem of dismantling and recycling.

[0048] In this embodiment, the photovoltaic modules 21 described above are respectively fixedly installed with the products provided by Shangmai (Zhenjiang) New Energy Technology Co., Ltd. by adhesive bonding. Photovoltaic module 22.

[0049] In order to The installation method between photovoltaic module 22 and glass photovoltaic module 21 is described in detail. This application further proposes embodiments 3, 4 and 5.

[0050] Example 3: The remaining technical solutions of Example 3 are the same as those of Example 2, except that: please refer to further details. Figure 3 and Figure 4 As shown, in this embodiment 3, each The photovoltaic module 22 is fixedly attached to each corresponding glass photovoltaic module 21 by double-sided tape 24.

[0051] Example 4: The remaining technical solutions of Example 4 are the same as those of Example 2, except that: please refer to further details. Figure 5 , Figure 6 and Figure 7 As shown, in this embodiment 4, each Photovoltaic modules 22 are fixedly mounted on their corresponding glass photovoltaic modules 21 by screws and fasteners 25. The photovoltaic module 22 has screw holes (not shown) on both sides or around its perimeter for inserting screws, and each module is secured by a number of screws. The photovoltaic module 22 is fixedly locked onto the frame 211 of its corresponding glass photovoltaic module 21.

[0052] Example 5: The remaining technical solutions of Example 5 are the same as those of Example 2, except that: please refer to further details. Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, in this embodiment 5, each Photovoltaic modules 21 are fixedly mounted on their corresponding glass photovoltaic modules by fixing blocks, wherein each... The photovoltaic module 22 is held together by several pressure blocks 26 on both sides. The photovoltaic module 22 is fixedly locked onto the frame 211 of its corresponding glass photovoltaic module 21.

[0053] Example 6: The remaining technical solutions of Example 6 are the same as those of Example 2, except that: Please refer to... Figure 12 As shown, in this embodiment 6, each Photovoltaic module 22 passes through several square tubes 27 ( Figure 12Two square tubes 27 are shown (other strip structures can also be used), and several tapes 28 and 29 (adhesive can also be used) are fixedly attached to each corresponding glass photovoltaic module 21.

[0054] Example 7: The remaining technical solutions of Example 7 are the same as any of the examples in Examples 1-6, except that in Example 7, each glass photovoltaic module is a double-glass photovoltaic module (weight 13Kg / m²). 2 (Thickness is 12mm).

[0055] Example 8: The remaining technical solutions of Example 8 are the same as any of the examples in Examples 1-6, except that in Example 8, each glass photovoltaic module is installed on a roof with corrugated steel tiles.

[0056] Example 9: The remaining technical solutions of Example 9 are the same as any of the examples in Examples 1-6, except that in Example 9, the remaining technical solutions are... The photovoltaic modules were replaced with other lightweight photovoltaic modules, which weigh 4 kg / m³. 2 The thickness is 4mm.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A photovoltaic module, characterized in that, The non-glass photovoltaic module is fixedly installed on the glass photovoltaic module, wherein the glass photovoltaic module serves as the mounting base for the non-glass photovoltaic module, wherein the glass photovoltaic module includes at least a front glass, and the non-glass photovoltaic module does not include glass; the glass photovoltaic module has been installed and generating electricity for at least 10 years before the non-glass photovoltaic module is installed on the glass photovoltaic module.

2. The photovoltaic module according to claim 1, characterized in that, The non-glass photovoltaic modules are connected to the grid or connected to a battery; the glass photovoltaic modules are either not connected to the grid or connected to the grid, or the glass photovoltaic modules are not connected to a battery or connected to a battery.

3. The photovoltaic module according to claim 1 or 2, characterized in that, The glass photovoltaic module includes at least a front glass, a first cell string layer, and a back encapsulation portion encapsulated as one piece; or, the glass photovoltaic module includes at least a front glass, a front encapsulating film layer, a first cell string layer, and a first back encapsulating film layer and a first back sheet as the back encapsulation portion encapsulated as one piece; wherein, the first back sheet includes the back glass or does not include the back glass; and / or, the glass photovoltaic module includes a frame located around or partially around the edges.

4. The photovoltaic module according to claim 1 or 2, characterized in that, The weight of the glass photovoltaic module is greater than 5 kg / m³. 2 ; and / or the thickness of the front glass is 1-15mm; and / or the thickness of the glass photovoltaic module is 5-35mm.

5. The photovoltaic module according to claim 4, characterized in that, The thickness of the front glass is 2-10mm.

6. The photovoltaic module according to claim 4, characterized in that, The thickness of the front glass is 3-6mm.

7. The photovoltaic module according to claim 4, characterized in that, The thickness of the glass photovoltaic module is 5-20mm.

8. The photovoltaic module according to claim 1 or 2, characterized in that, The glass photovoltaic module is mounted on a bracket or mounting base.

9. The photovoltaic module according to claim 1 or 2, characterized in that, The weight of the non-glass photovoltaic module is no more than 5 kg / m³. 2 ; and / or the thickness of the non-glass photovoltaic module is 0.5-6mm; and / or the weight of the non-glass photovoltaic module is less than the weight of the glass photovoltaic module; and / or the thickness of the non-glass photovoltaic module is less than the thickness of the glass photovoltaic module.

10. The photovoltaic module according to claim 9, characterized in that, The weight of the non-glass photovoltaic module shall not exceed 4.5 kg / m². 2 .

11. The photovoltaic module according to claim 9, characterized in that, The weight of the non-glass photovoltaic module is 1-3.5 kg / m³. 2 .

12. The photovoltaic module according to claim 9, characterized in that, The thickness of the non-glass photovoltaic module is 0.8-5mm.

13. The photovoltaic module according to claim 9, characterized in that, The thickness of the non-glass photovoltaic module is 1-4mm.

14. The photovoltaic module according to claim 1, characterized in that, The non-glass photovoltaic module includes at least a front non-glass encapsulation part, a second cell string layer, and a back non-glass encapsulation part that are encapsulated as a single unit, wherein the back non-glass encapsulation part and the front glass are connected in an upper and lower stacked manner.

15. The photovoltaic module according to claim 14, characterized in that, The thickness of the non-glass encapsulation portion on the back is 0.05-3mm.

16. The photovoltaic module according to claim 15, characterized in that, The thickness of the non-glass encapsulation portion on the back is 0.2-2mm.

17. The photovoltaic module according to claim 1, characterized in that, The non-glass photovoltaic module is fixedly installed on the glass photovoltaic module by adhesive bonding and / or fastening.

18. The photovoltaic module according to claim 1, characterized in that, The junction box of the non-glass photovoltaic module is located on the front of the non-glass photovoltaic module.

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