Photovoltaic curtain wall assembly and method for manufacturing a photovoltaic curtain wall assembly

Abstract

The application relates to a photovoltaic curtain wall assembly and a preparation method thereof. The photovoltaic curtain wall assembly comprises a first glass layer, a first adhesive film layer, a second glass layer, a first cell layer, a second adhesive film layer and a second cell layer. The first adhesive film layer is located on the back light side of the first glass layer; the second glass layer is located on the side of the first adhesive film layer away from the first glass layer; the first cell layer is located on the side of the second glass layer away from the first adhesive film layer; the second adhesive film layer is located on the side of the first cell layer away from the second glass layer; and the second cell layer is located on the side of the second adhesive film layer away from the first cell layer. The peeling strength between the first adhesive film layer and the first glass layer is greater than the peeling strength between the second adhesive film layer and the second cell layer. The first glass layer of the photovoltaic curtain wall assembly provided by the application is not prone to separation from the first adhesive film layer under the influence of wind and sunlight, thereby prolonging the service life and reliability of the entire photovoltaic curtain wall.

Description

Technical Field

[0001] This application relates to the field of photovoltaic building technology, and in particular to photovoltaic curtain wall components and methods for preparing photovoltaic curtain wall components. Background Technology

[0002] Building-integrated photovoltaics (BIPV) combines solar photovoltaic power generation with the building structure, making the photovoltaic cells an integral part of the building. This saves valuable land resources and provides electricity to the building's interior locally. However, during use, photovoltaic curtain walls are exposed to wind and sun, which can cause the glass layers to peel, break, and fall off under gravity, thus reducing the overall lifespan and reliability of the photovoltaic curtain wall. Summary of the Invention

[0003] In view of the above problems, this application provides a photovoltaic curtain wall component and a method for manufacturing the photovoltaic curtain wall component, which can reduce the probability of the glass layer of the photovoltaic curtain wall manufactured by the photovoltaic curtain wall component peeling and falling off under the action of gravity, thereby improving the service life and reliability of the photovoltaic curtain wall.

[0004] In a first aspect, this application provides a photovoltaic curtain wall module, which includes a first glass layer, a first encapsulant layer, a second glass layer, a first battery layer, a second encapsulant layer, and a second battery layer. The first encapsulant layer is located on the back side of the first glass layer; the second glass layer is located on the side of the first encapsulant layer opposite to the first glass layer; the first battery layer is located on the side of the second glass layer opposite to the first encapsulant layer; the second encapsulant layer is located on the side of the first battery layer opposite to the second glass layer; the second battery layer is located on the side of the second encapsulant layer opposite to the first battery layer; wherein, the peel strength between the first encapsulant layer and the first glass layer is greater than the peel strength between the second encapsulant layer and the second battery layer.

[0005] The photovoltaic curtain wall assembly provided in this application has a higher bonding strength between the outer glass and the photovoltaic cells because the first glass layer and the second glass layer on the outer side are connected by a first adhesive film layer, and the first battery layer and the second battery layer are connected by a second adhesive film layer. Furthermore, the peel strength between the first adhesive film layer and the first battery layer is greater than the peel strength between the second adhesive film layer and the second battery layer. Since the outer first glass layer is more susceptible to the influence of external environment such as wind and sun, it is not easy for the outer first glass layer to separate from the first adhesive film layer under the higher adhesion force. As a result, the service life and reliability of the entire photovoltaic curtain wall are higher.

[0006] In some embodiments, the peel strength P1 between the first adhesive film layer and the first glass layer is greater than or equal to 20 N / cm. By setting the peel strength P1 between the first adhesive film layer and the first glass layer to be greater than or equal to 20 N / cm, the adhesion strength between the first adhesive film layer and the first glass layer is satisfied, thereby making it less likely for the first glass layer to separate from the first adhesive film layer when the first glass layer is affected by wind and sun exposure.

[0007] In some embodiments, the peel strength P2 between the second adhesive film layer and the second battery layer satisfies the condition: 10 N / cm ≤ P2 ≤ 80 N / cm. By setting the peel strength P2 between the second adhesive film layer and the second battery layer to a range greater than or equal to 10 N / m and less than or equal to 80 N / cm, sufficient adhesive strength is achieved between the second adhesive film layer and the second battery layer, and the second adhesive film layer can be made of a conventional thermoplastic polyolefin material.

[0008] In some embodiments, the first adhesive film layer comprises at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and ethylene / vinyl acetate / ethylene copolymer adhesive film. By setting the first adhesive film layer to at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and polyethylene-polypropylene copolymer, the first adhesive film layer can be laminated at higher temperatures, and it exhibits better adhesion to the first glass layer, higher peel strength, better weather resistance, and better moisture barrier properties. Furthermore, compared to the traditional method of using thermoplastic polyolefins for the first adhesive film layer, the raw material cost is lower, and the adhesion effect with the first glass layer is better, significantly improving the service life and reliability of the photovoltaic curtain wall.

[0009] In some embodiments, the second adhesive layer comprises a thermoplastic polyolefin. By selecting a thermoplastic polyolefin as the second adhesive layer, the lamination temperature of the second adhesive layer can be as low as below 120°C, thereby reducing high-temperature damage to the first battery layer (perovskite battery layer).

[0010] In some embodiments, the thickness h1 of the first adhesive film layer satisfies the condition: 0.52mm ≤ h1 ≤ 2mm. By setting the thickness h1 of the first adhesive film layer to a range greater than or equal to 0.52mm and less than or equal to 2mm, the first adhesive film layer can meet the bonding strength requirements for the first glass layer and the second glass layer without being too thick, thereby reducing the possibility of wasting raw materials and reducing aesthetics.

[0011] In some embodiments, the thickness h2 of the second adhesive film layer satisfies the condition: 0.42mm ≤ h2 ≤ 2mm. By setting the thickness h2 of the second adhesive film layer to a range greater than or equal to 0.42mm and less than or equal to 2mm, the second adhesive film layer can meet the bonding strength requirements for the first battery layer and the second battery layer without being too thick, thereby reducing the possibility of wasting raw materials and reducing aesthetics.

[0012] In some embodiments, the photovoltaic curtain wall assembly includes a third encapsulating film layer, a third glass layer, and a fourth encapsulating film layer. The third encapsulating film layer is disposed on the side of the second battery layer opposite to the second encapsulating film layer; the third glass layer is disposed on the side of the third encapsulating film layer opposite to the second battery layer; and the fourth encapsulating film layer at least partially surrounds the outer periphery of the first and second battery layers. The cooperation between the third encapsulating film layer and the third glass layer protects the back side of the second battery layer. By at least partially surrounding the outer periphery of the first and second battery layers, the fourth encapsulating film layer can seal the outer periphery of the first and second battery layers, preventing external moisture from entering and damaging them.

[0013] In some embodiments, the thickness h3 of the first glass layer satisfies the condition: 5mm ≤ h3 ≤ 22mm. By setting the thickness h3 of the first glass layer to be greater than or equal to 5mm and less than or equal to 22mm, the first glass layer can meet the usage requirements of the external environment, such as wind and sun exposure.

[0014] In some embodiments, the thickness h4 of the second glass layer satisfies the condition: 1.1mm ≤ h4 ≤ 5mm. By setting the thickness h4 of the second glass layer to be greater than or equal to 1.1mm and less than or equal to 5mm, the second glass layer is made thinner than the first glass layer, thus meeting certain requirements for electrical conductivity and light transmission.

[0015] In some embodiments, the thickness h5 of the third glass layer satisfies the condition: 5mm ≤ h5 ≤ 22mm. By setting the thickness h5 of the third glass layer to a range greater than or equal to 5mm and less than or equal to 22mm, the third glass layer can meet the usage requirements of the entire photovoltaic curtain wall's inner side in contact with the external environment, and can provide better protection for the backlight side of the entire photovoltaic curtain wall.

[0016] Secondly, this application also provides a method for manufacturing a photovoltaic curtain wall module, comprising: sequentially stacking a first glass layer, a first encapsulant layer, and a second glass layer to form a first laminate; laminating the first laminate; forming a first battery layer on the side of the second glass layer opposite to the first encapsulant layer; and sequentially laminating a second encapsulant layer and a second battery layer on the side of the first battery layer opposite to the first laminate; wherein the peel strength between the first encapsulant layer and the first glass layer is greater than the peel strength between the second encapsulant layer and the second battery layer.

[0017] The photovoltaic curtain wall module manufacturing method provided in this application involves forming a first laminate with a first glass layer, a first encapsulant layer, and a second glass layer, and then laminating the first laminate to bond the first glass layer, the first encapsulant layer, and the second glass layer together. A first cell layer is then formed on the side of the second glass layer opposite to the first encapsulant layer. This ensures that when the first cell layer is a perovskite cell layer, the excessively high temperature during the lamination of the first laminate will not damage the perovskite cell layer, resulting in better photoelectric conversion efficiency of the first cell layer. Furthermore, since the first and second glass layers on the outer side are connected by the first encapsulant layer, and the first and second cell layers are connected by the second encapsulant layer, and the peel strength between the first encapsulant layer and the first glass layer is greater than the peel strength between the second encapsulant layer and the second cell layer, the outer glass layer has higher adhesion strength to the photovoltaic cells. Because the outer first glass layer is more susceptible to external environmental factors such as wind and sun, the higher adhesion strength also prevents the outer first glass layer from separating from the first encapsulant layer, thus resulting in a higher service life and reliability for the entire photovoltaic curtain wall.

[0018] In some embodiments, the step of sequentially laminating a second adhesive film layer and a second battery layer on the side of the first battery layer opposite to the first laminate specifically includes: sequentially laminating a first laminate, a first battery layer, a second adhesive film layer, a second battery layer, a third adhesive film layer, and a third glass layer to form a second laminate; and then laminating the second laminate. After the first battery layer is formed on the first laminate, the second adhesive film layer, the second battery layer, the third adhesive film layer, and the third glass layer are sequentially laminated on the side of the first battery layer opposite to the first laminate to form a second laminate, and then the second laminate is laminated to fix the above structures together.

[0019] In some embodiments, the first preset temperature T1 for laminating the first laminate is higher than the second preset temperature T2 for laminating the second laminate. Since the first battery layer is prepared only after lamination of the first laminate, and when the first battery layer is a perovskite battery layer, its subsequent lamination temperature cannot be too high. Therefore, the first preset temperature for laminating the first laminate is set lower than the second preset temperature for laminating the second laminate. This allows the adhesive film for the first adhesive layer in the preparation of the first laminate to be selected from materials with higher temperature resistance, such as polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and ethylene / vinyl acetate / ethylene copolymer adhesive film, thereby resulting in higher peel strength between the first adhesive film layer and the first glass layer. When laminating the second laminate, since the second laminate contains a perovskite battery layer, the lamination temperature of the second laminate, i.e., the second preset temperature, needs to be lower to reduce damage to the perovskite battery layer caused by excessively high temperatures.

[0020] In some embodiments, the first preset temperature T1 satisfies the condition: 130℃≤T1≤150℃. By setting the first preset temperature T1 to a range greater than or equal to 130℃ and less than or equal to 150℃, the first adhesive film layer can melt and bond well at a higher temperature during the lamination of the first laminate, thereby resulting in a higher bonding strength between the first adhesive film layer and the first glass layer and the second glass layer.

[0021] In some embodiments, the second preset temperature T2 satisfies the condition: 100℃≤T2≤120℃. By setting the second preset temperature T2 to be greater than or equal to 100℃ and less than or equal to 120℃, the second preset temperature T2 will not be higher than the first preset temperature T1, thereby reducing high-temperature damage to the first battery layer (perovskite battery layer) and ensuring the stability and service life of the perovskite battery layer.

[0022] In some embodiments, the preparation method further includes: laminating a first laminate under a first pressure p1; and laminating a second laminate under a second pressure p2; wherein the first pressure p1 is less than the second pressure p2. By laminating the first laminate under the first pressure and the second laminate under the second pressure, and with the first laminate p1 being less than the second pressure p2, the lamination pressure of the first laminate with a smaller number of laminated layers is less than the lamination pressure of the second laminate with a larger number of laminated layers. Furthermore, since the lamination temperature of the first laminate is greater than that of the second laminate, the temperature reduction can be compensated for by a greater pressure, thereby achieving a better bonding effect between the layers of the first laminate and between the layers of the second laminate.

[0023] In some embodiments, the first pressure p1 is 40 kPa to 65 kPa; by setting the first pressure p1 to be greater than or equal to 40 kPa and less than or equal to 65 kPa, the first adhesive film layer can be well pressed and bonded to the first glass layer and the second glass layer under this pressure.

[0024] In some embodiments, the second pressure p2 is 50 kPa to 85 kPa. By setting the second pressure p2 to be greater than or equal to 50 kPa and less than or equal to 85 kPa, the second adhesive layer and the third adhesive layer can be well bonded to the first battery layer, the second battery layer and the third glass layer under this pressure.

[0025] In some embodiments, the preparation method further includes: laminating a first laminate for a first preset time t1; laminating a second laminate for a second preset time t2; wherein the first preset time t1 is greater than or equal to the second preset time t2. By setting the first preset time t1 to be greater than or equal to the second preset time t2, when the first laminate is laminated for the first preset time t1, if polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, or ethylene / vinyl acetate / ethylene copolymer film is selected as the first adhesive film layer, it can melt better and bond firmly to the first and second glass layers. When the second laminate is laminated for the second preset time t2, if thermoplastic polyolefin is selected as the second adhesive film layer, the time the first battery layer (perovskite battery layer) is at a higher temperature can be minimized during the melting and bonding of the second adhesive film layer to the first and second battery layers, thereby reducing thermal damage to the perovskite battery caused by high temperatures.

[0026] In some embodiments, the first preset duration t1 is 20 min to 30 min. By setting the first preset duration t1 to a range greater than or equal to 20 min and less than or equal to 30 min, the first adhesive film layer can be melted more completely and bonded to the first glass layer and the second glass layer.

[0027] In some embodiments, the second preset duration t2 is 10 min to 20 min. By setting the second preset duration t2 to a range greater than or equal to 10 min and less than or equal to 20 min, the second and third adhesive film layers can melt and achieve adhesive bonding with the first battery layer, the second battery layer, and the third glass layer, while reducing thermal damage to the first battery layer (perovskite battery layer).

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0030] Figure 1 A cross-sectional schematic diagram of a photovoltaic curtain wall assembly provided in some embodiments of this application.

[0031] Figure 2 for Figure 1 A schematic diagram of the first laminate composed of the first glass layer, the first encapsulant layer, and the second glass layer in the photovoltaic curtain wall assembly shown.

[0032] Figure 3 A flowchart illustrating a method for preparing a photovoltaic curtain wall component according to some embodiments of this application.

[0033] The reference numerals in the detailed embodiments are as follows:

[0034] 100 - First glass layer; 200 - First adhesive film layer; 300 - Second glass layer; 400 - First battery layer; 500 - Second adhesive film layer; 600 - Second battery layer; 700 - Third adhesive film layer; 800 - Third glass layer; 900 - Fourth adhesive film layer. Detailed Implementation

[0035] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0037] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0041] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0043] Photovoltaic power generation is a technology that directly converts light energy into electrical energy using the photovoltaic effect at semiconductor interfaces. It mainly includes structures such as photovoltaic panels, controllers, and inverters. Among these, solar photovoltaic (PV) curtain walls are a new form of building-integrated photovoltaics (BIPV) application. In practical applications, they can be PV canopies, PV skylights, or building wall structures. PV canopies are typically installed outdoors and can be used as conventional awnings, carports to shelter vehicles from wind and rain, and as PV power stations to generate electricity for electric vehicles, while also feeding excess electricity back into the grid. PV skylights are often installed in the atriums of shopping malls, providing both natural light and electricity for the mall's use. Building walls are typically installed on the outer perimeter of a building structure, offering both aesthetic appeal and the ability to generate electricity for users inside the building.

[0044] During the use of photovoltaic curtain walls, they are affected by wind and sun, which makes the glass layer of the photovoltaic curtain wall prone to peeling, damage and falling off under the action of gravity, reducing the service life and reliability of the entire photovoltaic curtain wall.

[0045] In order to reduce the probability of the glass layer of a photovoltaic curtain wall peeling and falling off under gravity, thereby improving the service life and reliability of the photovoltaic curtain wall, this application provides a photovoltaic curtain wall component that can reduce the probability of the outer glass layer peeling and falling off by increasing the bonding strength of the outer glass layer, thereby improving the service life and reliability of the photovoltaic curtain wall made by the photovoltaic curtain wall component.

[0046] Please see Figure 1 and combined Figure 2 , Figure 1 A cross-sectional schematic diagram of a photovoltaic curtain wall assembly provided in some embodiments of this application is shown. Figure 2 It shows Figure 1The diagram shows a first laminate composed of a first glass layer 100, a first encapsulant layer 200, and a second glass layer 300 in a photovoltaic curtain wall assembly. Some embodiments of this application provide a photovoltaic curtain wall assembly including a first glass layer 100, a first encapsulant layer 200, a second glass layer 300, a first battery layer 400, a second encapsulant layer 500, and a second battery layer 600. The first adhesive film layer 200 is located on the back side of the first glass layer 100; the second glass layer 300 is located on the side of the first adhesive film layer 200 away from the first glass layer 100; the first battery layer 400 is located on the side of the second glass layer 300 away from the first adhesive film layer 200; the second adhesive film layer 500 is located on the side of the first battery layer 400 away from the second glass layer 300; the second battery layer 600 is located on the side of the second adhesive film layer 500 away from the first battery layer 400; wherein, the peel strength between the first adhesive film layer 200 and the first glass layer 100 is greater than the peel strength between the second adhesive film layer 500 and the second battery layer 600.

[0047] The first glass layer 100, being the outermost layer in contact with the external environment, is not only a component of the photovoltaic curtain wall but also a functional skin of the building envelope. The first glass layer 100 needs to possess high light transmittance, excellent impact resistance, wind / snow load bearing capacity, and splash / explosion protection. It also needs to resist ultraviolet radiation, be waterproof and dustproof, and have good weather resistance. Furthermore, it must ensure insulation performance, fire and lightning protection, and also consider certain architectural aesthetics. Therefore, the first glass layer 100 is crucial to the entire photovoltaic curtain wall, and it requires a certain thickness to meet the aforementioned functional requirements. For example, the thickness of the first glass layer can be greater than 5mm and less than 22mm.

[0048] For example, the first glass layer 100 can be ultra-white float tempered glass or semi-tempered glass, thereby giving the first glass layer 100 high light transmittance, improving power generation efficiency, and having excellent optical uniformity and low risk of spontaneous breakage, while also having good processability.

[0049] The first adhesive film layer 200 can be made of polyvinyl butyral (PVB), ethylene-vinyl acetate copolymer (EVA), polyolefin elastomer (POE), or ethylene / vinyl acetate / ethylene copolymer film (EPE), etc., thus giving the first adhesive film layer 200 better water vapor barrier properties and weather resistance. Its adhesion to the first glass layer 100 is greater than that between thermoplastic polyolefin (TPO) and the first glass layer 100 when the first adhesive film layer 200 is made of thermoplastic polyolefin (TPO), making it less likely for the first glass layer 100 to separate from the first adhesive film layer 200.

[0050] The second glass layer 300 can be a transparent conductive oxide layer, such as TCO (Transparent Conductive Oxide) glass. TCO is a functional substrate on which a transparent and conductive metal oxide film is deposited on the surface of ultra-white float glass or patterned glass, exhibiting excellent high visible light transmittance, low surface resistance, and good chemical and thermal stability. For example, the second glass layer 300 can be FTO (fluorine-doped tin oxide) glass, ITO (indium tin oxide) glass, or AZO (aluminum-doped zinc oxide) glass, etc.

[0051] The first cell layer 400 can be a perovskite cell layer, and the second cell layer 600 can be a crystalline silicon cell layer, thus making this photovoltaic curtain wall module a perovskite tandem cell with high photoelectric conversion efficiency.

[0052] The second adhesive film layer 500 can be a thermoplastic polyolefin (TPO), which results in a lower lamination temperature during the lamination process, reducing the decomposition damage to the perovskite cell layer when the first cell layer 400 is a perovskite cell layer.

[0053] The photovoltaic curtain wall assembly provided in this application embodiment has a higher bonding strength between the first glass layer 100 and the second glass layer 300 on the outer side, which are connected by a first adhesive film layer 200 and the first battery layer 400 and the second battery layer 600, respectively. Furthermore, the peel strength between the first adhesive film layer 200 and the first glass layer 100 is greater than the peel strength between the second adhesive film layer 500 and the second battery layer 600. This means that the first glass layer 100 on the outer side has a higher bonding strength with the photovoltaic cells. Since the first glass layer 100 on the outer side is more susceptible to the influence of external environments such as wind and sun, it is also less likely to separate from the first adhesive film layer 200 under the higher adhesion force. As a result, the service life and reliability of the entire photovoltaic curtain wall are higher.

[0054] The following is a detailed description of the structure of photovoltaic curtain wall components.

[0055] In some embodiments, the peel strength P1 between the first adhesive film layer 200 and the first glass layer 100 is greater than or equal to 20 N / cm.

[0056] The peel strength P1 between the first adhesive film layer 200 and the first glass layer 100 can be measured using a universal testing machine. For example, the universal testing machine peels the bonded first adhesive film from the first glass layer 100 at a constant speed and angle (typically 180°). The testing machine records the force changes during the peeling process in real time, and the peel strength P1 per unit width is obtained by calculating the average force.

[0057] By setting the peel strength P1 between the first adhesive film layer 200 and the first glass layer 100 to be greater than or equal to 20 N / cm, the first adhesive film layer 200 and the first glass layer 100 have sufficient adhesive strength, so that when the first glass layer 100 is affected by wind and sun in the external environment, the first glass layer 100 is not easy to separate from the first adhesive film layer 200.

[0058] In some embodiments, the peel strength P1 between the first adhesive layer 200 and the first glass layer 100 is 20 N / cm, thereby achieving a lower cost and better cost-effectiveness for the first adhesive layer 200 while meeting the peel strength requirements. In some embodiments, the peel strength P1 between the first adhesive layer 200 and the first glass layer 100 is 30 N / cm, making it more difficult for the first glass layer 100 to separate from the first adhesive layer 200. In some embodiments, the peel strength P1 between the first adhesive layer 200 and the first glass layer 100 is 40 N / cm, making it more difficult for the first glass layer 100 to separate from the first adhesive layer 200.

[0059] In some embodiments, the peel strength P2 between the second adhesive film layer 500 and the second battery layer 600 satisfies the condition: 10N / cm≤P2≤80N / cm.

[0060] The test method for the peel strength between the second adhesive layer 500 and the second battery layer 600 is the same as the test method for the peel strength between the first adhesive layer 200 and the first glass layer 100, and will not be repeated here.

[0061] By setting the peel strength P2 between the second adhesive film layer 500 and the second battery layer 600 to a range of greater than or equal to 10 N / m and less than or equal to 80 N / cm, sufficient bonding strength is achieved between the second adhesive film layer 500 and the second battery layer 600, and the second adhesive film layer 500 can be made of a conventional thermoplastic polyolefin material.

[0062] In some embodiments, the peel strength P2 between the second adhesive layer 500 and the second battery layer 600 is 10 N / cm, thereby ensuring that the second adhesive layer 500 is thinner while meeting the bonding strength requirements between the two layers, resulting in lower material costs. In some embodiments, the peel strength P2 between the second adhesive layer 500 and the second battery layer 600 is 80 N / cm, thereby ensuring higher bonding strength between the two layers and making it less likely for the second battery layer 600 to separate from the second adhesive layer 500. In some embodiments, the peel strength P2 between the second adhesive layer 500 and the second battery layer 600 is 50 N / cm, thereby ensuring high bonding strength between the two layers without making the second adhesive layer 500 too thick.

[0063] In some embodiments, the first film layer 200 includes at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and ethylene / vinyl acetate / ethylene copolymer.

[0064] Polyvinyl butyral (PVB) has high light transmittance and strong adhesion. Ethylene-vinyl acetate copolymer (EVA) is low-cost and has a mature manufacturing process. Polyolefin elastomer (POE) releases no acetic acid, is neutral, has ultra-low water vapor transmission, good weather resistance, and does not yellow. Ethylene / vinyl acetate / ethylene copolymer (EPE, (EVA-POE-EVA)) combines the strong adhesion of EVA with the high barrier properties of POE.

[0065] By setting the first adhesive film layer 200 as at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and polyethylene-polypropylene copolymer, the first adhesive film layer 200 can be laminated at a higher temperature, and its adhesion to the first glass layer 100 is better, its peel strength is higher, its weather resistance is better, and its water vapor barrier properties are also better. At the same time, compared with the traditional method of using thermoplastic polyolefin for the first adhesive film layer 200, the raw material cost is lower, the adhesion effect with the first glass layer 100 is better, and the service life and reliability of the photovoltaic curtain wall are greatly improved.

[0066] In some embodiments, the first film layer 200 is polyvinyl butyral (PVB). In some embodiments, the first film layer 200 is ethylene-vinyl acetate copolymer (EVA). In some embodiments, the first film layer 200 is polyolefin elastomer (POE). In some embodiments, the first film layer 200 is ethylene / vinyl acetate / ethylene copolymer (EPE, (EVA-POE-EVA)).

[0067] In some embodiments, the second adhesive layer 500 comprises a thermoplastic polyolefin (TPO). Thermoplastic polyolefin (TPO) can serve as a flexible backsheet substrate and allows the lamination temperature of the second adhesive layer 500 to be as low as below 120°C, thereby reducing high-temperature damage to the first battery layer 400 (perovskite battery layer).

[0068] In some embodiments, the thickness h1 of the first adhesive film layer 200 satisfies the condition: 0.52mm≤h1≤2mm.

[0069] The thickness h1 of the first adhesive layer 200 is greater than or equal to 0.52 mm and less than or equal to 2 mm, meaning that the thickness of the first adhesive layer 200 measured at any location is greater than or equal to 0.52 mm and less than or equal to 2 mm. By setting the thickness h1 of the first adhesive layer 200 to within the range of greater than or equal to 0.52 mm and less than or equal to 2 mm, the first adhesive layer 200 can meet the bonding strength requirements for the first glass layer 100 and the second glass layer 300 without being excessively thick, thereby reducing the possibility of waste of raw materials and decreased aesthetics.

[0070] In some embodiments, the thickness h1 of the first adhesive film layer 200 is 0.52 mm, so that the thickness of the first adhesive film layer 200 is not too thick while satisfying the condition of bonding the first glass layer 100 and the second glass layer 300 together, and the required raw materials are also less, thereby reducing the cost of raw materials.

[0071] In some embodiments, the thickness h1 of the first adhesive film layer 200 is 2 mm, so that the first adhesive film layer 200 can firmly bond the first glass layer 100 and the second glass layer 300 together.

[0072] In some embodiments, the thickness h1 of the first adhesive film layer 200 is 1 mm, which ensures that the adhesion strength between the first adhesive film layer 200 and the first glass layer 100 and the second glass layer 300 is moderate, and the amount of raw materials required for the first adhesive film layer 200 in the preparation of the photovoltaic curtain wall is also moderate. In some embodiments, the thickness h1 of the first adhesive film layer 200 can also be 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, etc.

[0073] Please see Figure 1 In some embodiments, the thickness h2 of the second adhesive film layer 500 satisfies the condition: 0.42mm≤h1≤2mm.

[0074] The thickness h2 of the second adhesive layer 500 is greater than or equal to 0.42 mm and less than or equal to 2 mm, meaning that the thickness of the second adhesive layer 500 measured at any location is greater than or equal to 0.42 mm and less than or equal to 2 mm. By setting the thickness h2 of the second adhesive layer 500 to the range of greater than or equal to 0.42 mm and less than or equal to 2 mm, the second adhesive layer 500 can meet the bonding strength requirements for the first battery layer 400 and the second battery layer 600 without being excessively thick, thereby reducing the possibility of waste of raw materials and decreased aesthetics.

[0075] In some embodiments, the thickness h2 of the second adhesive layer 500 is 0.42 mm, so that the thickness of the second adhesive layer 500 is not too thick while satisfying the condition of bonding the first battery layer 400 and the second battery layer 600 together, and the required raw materials are also less, thereby reducing the cost of raw materials.

[0076] In some embodiments, the thickness h2 of the second adhesive film layer 500 is 2 mm, which enables the second adhesive film layer 500 to firmly bond the first battery layer 400 and the second battery layer 600 together.

[0077] In some embodiments, the thickness h2 of the second adhesive film layer 500 is 1 mm, which ensures that the adhesion strength between the second adhesive film layer 500 and the first battery layer 400 and the second battery layer 600 is moderate, and the amount of raw materials required for the second adhesive film layer 500 in the preparation of the photovoltaic curtain wall is also moderate. In some embodiments, the thickness h2 of the second adhesive film layer 500 can also be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1.1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, etc.

[0078] Please see Figure 1In some embodiments, the photovoltaic curtain wall assembly includes a third encapsulating film layer 700, a third glass layer 800, and a fourth encapsulating film layer 900. The third encapsulating film layer 700 is disposed on the side of the second battery layer 600 opposite to the second encapsulating film layer 500; the third glass layer 800 is disposed on the side of the third encapsulating film layer 700 opposite to the second battery layer 600; and the fourth encapsulating film layer 900 is at least partially disposed around the outer periphery of the first battery layer 400 and the second battery layer 600.

[0079] The third adhesive layer 700 can be the same as the second adhesive layer 500; for example, the third adhesive layer 700 can be thermoplastic polyolefin (TPO). The third glass layer 800 can be the innermost glass in contact with the external environment, and it can be ultra-clear float tempered glass or semi-tempered glass. The fourth adhesive layer 900 can be butyl rubber.

[0080] The third adhesive layer 700 is used to connect the second battery layer 600 and the third glass layer 800 together. The fourth adhesive layer 900 is used to seal the outer periphery of the first battery layer 400 and the second battery layer 600.

[0081] By engaging the third adhesive layer 700 with the third glass layer 800, the back side of the second battery layer 600 is protected. By at least partially surrounding the outer periphery of the first battery layer 400 and the second battery layer 600 with the fourth adhesive layer 900, the outer periphery of the first battery layer 400 and the second battery layer 600 is sealed, preventing external moisture from entering and damaging the first battery layer 400 and the second battery layer 600.

[0082] In some embodiments, the fourth adhesive film layer 900 surrounds the outer periphery of the first battery layer 400, the second adhesive film layer 500, the second battery layer 600, and the third adhesive film layer 700, and the upper and lower sides of the fourth adhesive film layer 900 along the thickness direction respectively abut against the second glass layer 300 and the third glass layer 800, thereby providing water-blocking protection for the first battery layer 400, the second adhesive film layer 500, the second battery layer 600, and the third adhesive film layer 700, reducing the possibility of moisture entering the battery.

[0083] Please see Figure 1 In some embodiments, the thickness h3 of the first glass layer 100 satisfies the condition: 5mm≤h3≤22mm.

[0084] The thickness h3 of the first glass layer 100 is greater than or equal to 5 mm and less than or equal to 22 mm, meaning that the thickness of the first glass layer 100 measured at any location is greater than or equal to 5 mm and less than or equal to 22 mm. By setting the thickness h3 of the first glass layer 100 to be within the range of greater than or equal to 5 mm and less than or equal to 22 mm, the first glass layer 100 can meet the usage requirements of external environmental conditions such as wind and sun exposure.

[0085] In some embodiments, the thickness h3 of the first glass layer 100 is 5 mm. This allows the first glass layer 100 to be thinner while still meeting usage requirements, resulting in lower raw material costs.

[0086] In some embodiments, the thickness h3 of the first glass layer 100 is 22 mm, which makes the first glass layer 100 thicker, resulting in stronger impact resistance, higher reliability, and better thermal insulation performance.

[0087] In some embodiments, the thickness h3 of the first glass layer 100 is 10 mm, which makes the thickness of the first glass layer 100 more moderate, with better impact resistance and better reliability and heat insulation.

[0088] In some embodiments, the thickness h3 of the first glass layer 100 may also be 6mm, 7mm, 8mm, 9mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, etc.

[0089] Please see Figure 1 In some embodiments, the thickness h4 of the second glass layer 300 satisfies the condition: 1.1mm≤h4≤5mm.

[0090] The thickness h4 of the second glass layer 300 is greater than or equal to 1.1 mm and less than or equal to 5 mm, meaning that the thickness of the second glass layer 300 measured at any location is greater than or equal to 1.1 mm and less than or equal to 5 mm. By setting the thickness h4 of the second glass layer 300 to within the range of greater than or equal to 1.1 mm and less than or equal to 5 mm, the second glass layer 300 is made thinner than the first glass layer 100, thus meeting certain requirements for electrical conductivity and light transmission.

[0091] In some embodiments, the thickness h4 of the second glass layer 300 is 1.1 mm. This makes the second glass layer 300 thinner, resulting in less loss of sunlight passing through the second glass layer 300 and reaching the first battery layer 400 and the second battery layer 600. Consequently, the first battery layer 400 and the second battery layer 600 receive more light energy, resulting in higher photoelectric conversion efficiency.

[0092] In some embodiments, the thickness h4 of the second glass layer 300 is 5 mm, which makes the second glass layer 300 thicker. When the first battery layer 400 is a perovskite battery layer, its thickness is thinner, which allows it to adhere better to the second glass layer 300.

[0093] In some embodiments, the thickness h4 of the second glass layer 300 is 3 mm, thereby making the light transmittance of the second glass layer 300 better, and when the first battery layer 400 is a perovskite battery layer, it can also be well attached to the second glass layer 300.

[0094] In some embodiments, the thickness h4 of the second glass layer 300 is 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm, etc.

[0095] Please see Figure 1 In some embodiments, the thickness h5 of the third glass layer 800 satisfies the condition: 5mm≤h5≤22mm.

[0096] The thickness h5 of the third glass layer 800 is greater than or equal to 5 mm and less than or equal to 22 mm, meaning that the thickness of the third glass layer 800 measured at any location is greater than or equal to 5 mm and less than or equal to 22 mm. By setting the thickness h5 of the third glass layer 800 to within the range of greater than or equal to 5 mm and less than or equal to 22 mm, the third glass layer 800 can meet the usage requirements of the entire photovoltaic curtain wall's inner side in contact with the external environment, and can provide better protection for the backlight side of the entire photovoltaic curtain wall.

[0097] In some embodiments, the thickness h5 of the third glass layer 800 is 5 mm. This allows the third glass layer 800 to be thinner while still meeting usage requirements, resulting in lower raw material costs.

[0098] In some embodiments, the thickness h5 of the third glass layer 800 is 22 mm, which makes the third glass layer 800 thicker, resulting in stronger impact resistance, higher reliability, and better thermal insulation performance.

[0099] In some embodiments, the thickness h5 of the third glass layer 800 is 10 mm, which makes the thickness of the third glass layer 800 moderate, with better impact resistance and good reliability and heat insulation.

[0100] In some embodiments, the thickness h5 of the third glass layer 800 can also be 6mm, 7mm, 8mm, 9mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, etc.

[0101] The photovoltaic curtain wall assembly provided in this application includes a first glass layer 100, a first encapsulant layer 200, a second glass layer 300, a first battery layer 400, a second encapsulant layer 500, a second battery layer 600, a third encapsulant layer 700, a third glass layer 800, and a fourth encapsulant layer 900. The first encapsulant layer 200 is located on the back side of the first glass layer 100; the second glass layer 300 is located on the side of the first encapsulant layer 200 away from the first glass layer 100; the first battery layer 400 is located on the side of the second glass layer 300 away from the first encapsulant layer 200; the second encapsulant layer 500 is located on the side of the first battery layer 400 away from the second glass layer 300; and the second battery layer 600 is located on the side of the second encapsulant layer 500 away from the first battery layer 400. The peel strength between the first encapsulant layer 200 and the first glass layer 100 is greater than the peel strength between the second encapsulant layer 500 and the second battery layer 600. The peel strength P1 between the first adhesive layer 200 and the first glass layer 100 is greater than or equal to 20 N / cm. The first adhesive layer 200 may include at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and ethylene / vinyl acetate / ethylene copolymer. The peel strength P2 between the second adhesive layer 500 and the second battery layer 600 satisfies the condition: 10 N / cm ≤ P2 ≤ 80 N / cm. The second adhesive layer 500 may include thermoplastic polyolefin. The third adhesive layer 700 is disposed on the side of the second battery layer 600 opposite to the second adhesive layer 500. The third adhesive layer 700 may be made of the same material as the second adhesive layer 500. The third glass layer 800 is disposed on the side of the third adhesive layer 700 opposite to the second battery layer 600. The fourth adhesive layer 900 is at least partially surrounding the outer periphery of the first battery layer 400 and the second battery layer 600. The fourth adhesive layer 900 may be butyl rubber.

[0102] The photovoltaic curtain wall assembly provided in this application embodiment has a higher bonding strength between the first glass layer 100 and the second glass layer 300 on the outer side, which are connected by a first adhesive film layer 200 and the first battery layer 400 and the second battery layer 600, respectively. Furthermore, the peel strength between the first adhesive film layer 200 and the first glass layer 100 is greater than the peel strength between the second adhesive film layer 500 and the second battery layer 600. This means that the first glass layer 100 on the outer side has a higher bonding strength with the photovoltaic cells. Since the first glass layer 100 on the outer side is more susceptible to the influence of external environments such as wind and sun, it is also less likely to separate from the first adhesive film layer 200 under the higher adhesion force. As a result, the service life and reliability of the entire photovoltaic curtain wall are higher.

[0103] Furthermore, since the peel strength P1 between the first adhesive film layer 200 and the first glass layer 100 is greater than or equal to 20 N / cm, it satisfies the adhesion strength requirements between the first adhesive film layer 200 and the first glass layer 100. Consequently, when the first glass layer 100 is exposed to wind and sun, it is not easy for the first glass layer 100 to separate from the first adhesive film layer 200. The peel strength P2 between the second adhesive film layer 500 and the second battery layer 600 is set to be greater than or equal to 10 N / m and less than or equal to 80 N / cm, thereby satisfying the adhesion strength requirements between the second adhesive film layer 500 and the second battery layer 600. Moreover, the second adhesive film layer 500 can be made of a conventional thermoplastic polyolefin material.

[0104] Meanwhile, because the first adhesive layer 200 is selected from at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and polyethylene-polypropylene copolymer, it can be laminated at higher temperatures. Furthermore, it exhibits better adhesion to the first glass layer 100, higher peel strength, better weather resistance, and better moisture barrier properties. Compared to the traditional method of using thermoplastic polyolefins for the first adhesive layer 200, the raw material cost is lower, and the adhesion to the first glass layer 100 is superior, significantly improving the service life and reliability of the photovoltaic curtain wall. The second adhesive layer 500 is also made of thermoplastic polyolefin, allowing its lamination temperature to be as low as below 120°C, reducing high-temperature damage to the first battery layer 400 (perovskite battery layer).

[0105] Furthermore, the cooperation between the third adhesive layer 700 and the third glass layer 800 protects the back side of the second battery layer 600. By at least partially surrounding the outer periphery of the first battery layer 400 and the second battery layer 600 with the fourth adhesive layer 900, the outer periphery of the first battery layer 400 and the second battery layer 600 can be sealed to prevent external moisture from entering the first battery layer 400 and the second battery layer 600 and damaging them.

[0106] This application also provides a method for manufacturing a photovoltaic curtain wall module; please refer to [link / reference]. Figure 3 , Figure 3 The flowchart illustrates a method for manufacturing a photovoltaic curtain wall component according to some embodiments of this application. The method for manufacturing a photovoltaic curtain wall component according to some embodiments of this application includes:

[0107] S10: The first glass layer 100, the first adhesive film layer 200, and the second glass layer 300 are sequentially stacked to form the first laminate ( Figure 2 (as shown); S20: Laminating the first laminate; S30: Forming the first battery layer 400 on the side of the second glass layer 300 away from the first adhesive film layer 200; S40: Sequentially laminating the second adhesive film layer 500 and the second battery layer 600 on the side of the first battery layer 400 away from the first laminate; wherein, the peel strength of the first adhesive film layer 200 is greater than the peel strength of the second adhesive film layer 500.

[0108] The method for manufacturing photovoltaic curtain wall components provided in this application involves forming a first glass layer 100, a first adhesive film layer 200, and a second glass layer 300, as shown in the embodiment. Figure 2The first laminated sheet is then pressed together to bond the first glass layer 100, the first adhesive film layer 200, and the second glass layer 300 together. A first solar cell layer 400 is then formed on the side of the second glass layer 300 opposite to the first adhesive film layer 200. This ensures that when the first solar cell layer 400 is a perovskite solar cell layer, the excessively high temperature during the lamination of the first laminated sheet will not damage the perovskite solar cell layer, thereby resulting in better photoelectric conversion efficiency of the first solar cell layer 400. Meanwhile, since the first glass layer 100 and the second glass layer 300 on the outer side are connected by the first adhesive film layer 200, and the first battery layer 400 and the second battery layer 600 are connected by the second adhesive film layer 500, and the peel strength between the first adhesive film layer 200 and the first glass layer 100 is greater than the peel strength between the second adhesive film layer 500 and the second battery layer 600, the first glass layer 100 on the outer side has a higher bonding strength with the photovoltaic cell. Since the first glass layer 100 on the outer side is more susceptible to the influence of external environment such as wind and sun, the first glass layer 100 on the outer side is also less likely to separate from the first adhesive film layer 200 under the higher adhesion force, thus making the service life and reliability of the entire photovoltaic curtain wall higher.

[0109] In some embodiments, step S40, which involves sequentially laminating a second adhesive film layer 500 and a second battery layer 600 on the side of the first battery layer 400 opposite to the first laminate, specifically includes: sequentially stacking the first laminate, the first battery layer 400, the second adhesive film layer 500, the second battery layer 600, the third adhesive film layer 700, and the third glass layer 800 to form the second laminate; and laminating the second laminate.

[0110] After the first battery layer 400 is formed on the first laminate, the second adhesive film layer 500, the second battery layer 600, the third adhesive film layer 700 and the third glass layer 800 are sequentially stacked on the side of the first battery layer 400 away from the first laminate to form the second laminate. Then the second laminate is laminated to fix the above structures together.

[0111] In some embodiments, the second laminate further includes a fourth adhesive layer 900, which at least partially surrounds the outer periphery of the first battery layer 400 and the second battery layer 600, thereby providing edge sealing and water-blocking protection for the outer periphery of the first battery layer 400 and the second battery layer 600. In some embodiments, after the third glass layer 800 is laminated onto the third adhesive layer 700, the fourth adhesive layer 900 is disposed between the first laminate and the third glass layer 800, and surrounds the outer periphery of the first battery layer 400, the second adhesive layer 500, the second battery layer 600, and the third adhesive layer 700, before the second laminate is laminated.

[0112] In some embodiments, the first preset temperature of the first laminated sheet is lower than the second preset temperature of the second laminated sheet.

[0113] Since the first battery layer 400 is prepared only after the first laminate is completed, and when the first battery layer 400 is a perovskite battery layer, its subsequent lamination temperature cannot be too high. Therefore, the first preset temperature for laminating the first laminate is set lower than the second preset temperature for laminating the second laminate. This allows the adhesive film of the first film layer 200 in the preparation of the first laminate to be selected from materials with higher temperature resistance, such as polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and ethylene / vinyl acetate / ethylene copolymer film, thereby resulting in higher peel strength between the first film layer 200 and the first glass layer 100. When laminating the second laminate, since the second laminate contains a perovskite battery layer, the lamination temperature of the second laminate, i.e., the second preset temperature, needs to be lower to reduce damage to the perovskite battery layer caused by excessively high temperatures. The second film layer 500 and the third film layer 700 can be thermoplastic polyolefins.

[0114] In some embodiments, the first preset temperature T1 satisfies the condition: 130℃ ≤ T1 ≤ 150℃. By setting the first preset temperature T1 within the range of greater than or equal to 130℃ and less than or equal to 150℃, the first adhesive film layer 200 can melt and bond well at a higher temperature during the lamination of the first laminate, thereby resulting in higher bonding strength between the first adhesive film layer 200 and the first glass layer 100 and the second glass layer 300. In some embodiments, the first preset temperature T1 is 130℃. In some embodiments, the first preset temperature T1 is 150℃. In some embodiments, the first preset temperature T1 is 140℃. In some embodiments, the first preset temperature is 135℃, 145℃, etc. It should be noted that the value of the first preset temperature T1 is related to the material selected for the first adhesive film layer 200 and the required coating thickness. When the selected material has a higher melting point and / or the coating thickness is thicker, the value of the first preset temperature T1 will be larger.

[0115] In some embodiments, the second preset temperature T2 satisfies the condition: 100℃≤T2≤120℃. By setting the second preset temperature T2 to be greater than or equal to 100℃ and less than or equal to 120℃, the second preset temperature T2 will not be higher than the first preset temperature T1, thereby reducing high-temperature damage to the first battery layer 400 (perovskite battery layer) and ensuring the stability and service life of the perovskite battery layer.

[0116] In some embodiments, the preparation method further includes: laminating a first laminate under a first pressure p1; laminating a second laminate under a second pressure p2; wherein the first pressure p1 is less than the second pressure p2.

[0117] By laminating the first laminate under a first pressure and the second laminate under a second pressure, with the first laminate p1 being less than the second pressure p2, the lamination pressure of the first laminate with fewer laminated layers is less than that of the second laminate with more laminated layers. Furthermore, since the lamination temperature of the first laminate is greater than that of the second laminate, the temperature reduction can be compensated for by the greater pressure, thereby achieving a better bonding effect between the layers of the first laminate and between the layers of the second laminate.

[0118] In some embodiments, the first pressure p1 is 40 kPa to 65 kPa. The pressure p1 can be adjusted by a laminating device so that the first pressure p1 is greater than or equal to 40 kPa and less than or equal to 65 kPa. By setting the first pressure p1 to be greater than or equal to 40 kPa and less than or equal to 65 kPa, the first adhesive film layer 200 can achieve better pressure bonding with the first glass layer 100 and the second glass layer 300 under this pressure.

[0119] In some embodiments, the first pressure p1 is 40 kPa. In some embodiments, the first pressure p1 is 65 kPa. In some embodiments, the first pressure p1 is 50 kPa.

[0120] In some embodiments, the second pressure p2 is 50 kPa to 85 kPa. The pressure p2 can also be adjusted by the lamination equipment to ensure that the lamination pressure p2 is greater than or equal to 50 kPa and less than or equal to 85 kPa. By setting the second pressure p2 to be greater than or equal to 50 kPa and less than or equal to 85 kPa, the second adhesive film layer 500 and the third adhesive film layer 700 can be well bonded to the first battery layer 400, the second battery layer 600, and the third glass layer 800 under this pressure.

[0121] In some embodiments, the second pressure p2 is 50 kPa. In some embodiments, the second pressure p2 is 85 kPa. In some embodiments, the second pressure p2 is 70 kPa.

[0122] In some embodiments, the preparation method further includes: laminating a first laminate for a first preset time t1; laminating a second laminate for a second preset time t2; wherein the first preset time t1 is greater than or equal to the second preset time t2.

[0123] The first preset duration t1 and the second preset duration t2 can be adjusted by the lamination equipment so that the first preset duration t1 is greater than or equal to the second preset duration t2. By setting the first preset duration t1 to be greater than or equal to the second preset duration t2, when the first laminate is laminated at the first preset duration t1, if polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, or ethylene / vinyl acetate / ethylene copolymer film is selected as the first adhesive film layer 200, it can melt better and bond firmly to the first glass layer 100 and the second glass layer 300. When the second laminate is laminated at the second preset duration t2, if thermoplastic polyolefin is selected as the second adhesive film layer 500, the time when the second adhesive film layer 500 melts and bonds firmly to the first battery layer 400 and the second battery layer 600 can be shortened as much as possible, so as to reduce the thermal damage of high temperature to the perovskite battery.

[0124] In some embodiments, the first preset time t1 is 20-30 minutes. By setting the first preset time t1 to a range greater than or equal to 20 minutes and less than or equal to 30 minutes, the first adhesive film layer 200 can be melted relatively completely and bonded to the first glass layer 100 and the second glass layer 300. In some embodiments, the first preset time t1 is 20 minutes. In some embodiments, the first preset time t1 is 30 minutes. In some embodiments, the first preset time t1 is 25 minutes.

[0125] In some embodiments, the second preset duration t2 is 10 min to 20 min. By setting the second preset duration t2 to a range greater than or equal to 10 min and less than or equal to 20 min, the second adhesive film layer 500 and the third adhesive film layer 700 can melt and achieve adhesive bonding with the first battery layer 400, the second battery layer 600, and the third glass layer 800, while reducing thermal damage to the first battery layer 400 (perovskite battery layer). In some embodiments, the second preset duration t2 is 10 min. In some embodiments, the second preset duration t2 is 20 min. In some embodiments, the second preset duration t2 is 15 min.

[0126] The method for manufacturing photovoltaic curtain wall components provided in some embodiments of this application includes: sequentially stacking a first glass layer 100, a first adhesive film layer 200, and a second glass layer 300 to form a first laminate ( Figure 2As shown), the first adhesive film layer 200 can be polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, or ethylene / vinyl acetate / ethylene copolymer adhesive film. The lamination temperature T1 of the first laminate is greater than or equal to 130℃ and less than or equal to 150℃, the lamination pressure p1 is greater than or equal to 40Kpa and less than or equal to 65Kpa, and the lamination time t1 is greater than or equal to 20min and less than or equal to 30min. A first laminate, a first battery layer 400, a second adhesive film layer 500, a second battery layer 600, a third adhesive film layer 700, and a third glass layer 800 are sequentially stacked. A fourth adhesive film layer 900 is disposed between the first laminate and the third glass layer 800, and the fourth adhesive film layer 900 surrounds the outer periphery of the first battery layer 400, the second adhesive film layer 500, the second battery layer 600, and the third adhesive film layer 700, thereby forming a second laminate. The second adhesive film layer 500 and the third adhesive film layer 700 can be made of the same material, which can be thermoplastic polyolefin. The fourth adhesive film layer 900 can be butyl rubber. The peel strength between the first adhesive film layer 200 and the first glass layer 100 is greater than the peel strength between the second adhesive film layer 500 and the second battery layer 600. The lamination temperature T2 of the second layer is greater than or equal to 100℃ and less than or equal to 120℃, the lamination pressure p2 is greater than or equal to 50Kpa and less than or equal to 85Kpa, and the lamination pressure t2 is greater than or equal to 10min and less than or equal to 20min.

[0127] The photovoltaic curtain wall module ultimately manufactured by this method is formed through a two-stage lamination process. Therefore, the first adhesive film layer 200 and the second adhesive film layer 500 can be made of different adhesive film materials. The peel strength between the first adhesive film layer 200 and the first glass layer 100 is greater than the peel strength between the second adhesive film layer 500 and the second battery layer 600. This means that the outer first glass layer 100 has a higher bonding strength with the photovoltaic cell. Since the outer first glass layer 100 is more susceptible to external environmental factors such as wind and sun, the higher adhesion makes it less likely for the outer first glass layer 100 to separate from the first adhesive film layer 200, thus resulting in a higher service life and reliability for the entire photovoltaic curtain wall. Furthermore, the lamination temperature and time for the second laminate are lower than those for the first laminate, thereby reducing thermal damage to the perovskite battery layer when the first battery layer 400 is a perovskite battery layer.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A photovoltaic curtain wall module, characterized in that, The photovoltaic curtain wall components include: First glass layer (100); The first adhesive film layer (200) is located on the back side of the first glass layer (100); The second glass layer (300) is located on the side of the first film layer (200) opposite to the first glass layer (100); The first battery layer (400) is located on the side of the second glass layer (300) opposite to the first adhesive film layer (200); The second adhesive film layer (500) is located on the side of the first battery layer (400) opposite to the second glass layer (300); The second battery layer (600) is located on the side of the second adhesive film layer (500) opposite to the first battery layer (400); The adhesive materials of the first adhesive layer (200) and the second adhesive layer (500) are different; the peel strength between the first adhesive layer (200) and the first glass layer (100) is greater than the peel strength between the second adhesive layer (500) and the second battery layer (600); the peel strength P1 between the first adhesive layer (200) and the first glass layer (100) is greater than or equal to 20 N / cm; the peel strength P2 between the second adhesive layer (500) and the second battery layer (600) satisfies the condition: 10 N / cm ≤ P2 ≤ 80 N / cm.

2. The photovoltaic curtain wall module according to claim 1, characterized in that, The first adhesive film layer (200) includes at least one of polyvinyl butyral, ethylene-vinyl acetate copolymer, polyolefin elastomer, and ethylene / vinyl acetate / ethylene copolymer adhesive film.

3. The photovoltaic curtain wall module according to claim 1, characterized in that, The second film layer (500) comprises a thermoplastic polyolefin.

4. The photovoltaic curtain wall module according to claim 1, characterized in that, The thickness h1 of the first adhesive film layer (200) satisfies the following condition: 0.52mm≤h1≤2mm; and / or The thickness h2 of the second adhesive film layer (500) satisfies the following condition: 0.42mm≤h2≤2mm.

5. The photovoltaic curtain wall module according to any one of claims 1-4, characterized in that, The photovoltaic curtain wall components include: The third adhesive film layer (700) is disposed on the side of the second battery layer (600) opposite to the second adhesive film layer (500); The third glass layer (800) is disposed on the side of the third adhesive film layer (700) opposite to the second battery layer (600); The fourth adhesive film layer (900) is at least partially disposed around the outer periphery of the first battery layer (400) and the second battery layer (600).

6. The photovoltaic curtain wall module according to claim 5, characterized in that, The thickness h3 of the first glass layer (100) satisfies the following condition: 5mm≤h3≤22mm; and / or The thickness h4 of the second glass layer (300) satisfies the following condition: 1.1mm≤h4≤5mm; and / or The thickness h5 of the third glass layer (800) satisfies the following condition: 5mm≤h5≤22mm.

7. A method for manufacturing a photovoltaic curtain wall module, characterized in that, The preparation method includes: The first glass layer (100), the first adhesive film layer (200), and the second glass layer (300) are sequentially stacked to form the first laminate; Laminate the first laminate; A first battery layer (400) is formed on the side of the second glass layer (300) opposite to the first adhesive film layer (200). A second adhesive film layer (500) and a second battery layer (600) are sequentially laminated on the side of the first battery layer (400) away from the first laminate. The adhesive film materials of the first adhesive film layer (200) and the second adhesive film layer (500) are different; the peel strength between the first adhesive film layer (200) and the first glass layer (100) is greater than the peel strength between the second adhesive film layer (500) and the second battery layer (600).

8. The method for preparing a photovoltaic curtain wall module according to claim 7, characterized in that, The step of sequentially laminating a second adhesive film layer (500) and a second battery layer (600) on the side of the first battery layer (400) opposite to the first laminate specifically includes: The first laminate, the first battery layer (400), the second adhesive film layer (500), the second battery layer (600), the third adhesive film layer (700), and the third glass layer (800) are sequentially stacked to form the second laminate; The second laminate is then laminated.

9. The method for preparing a photovoltaic curtain wall module according to claim 8, characterized in that, The first preset temperature T1 for laminating the first laminate is higher than the second preset temperature T2 for laminating the second laminate.

10. The method for preparing a photovoltaic curtain wall module according to claim 9, characterized in that, The first preset temperature T1 meets the following conditions: 130℃≤T1≤150℃; and / or The second preset temperature T2 meets the following conditions: 100℃≤T2≤120℃。 11. The method for preparing a photovoltaic curtain wall module according to claim 8, characterized in that, The preparation method further includes: The first laminate is laminated under a first pressure p1; The second laminate is laminated under a second pressure p2; The first pressure p1 is less than the second pressure p2.

12. The method for preparing a photovoltaic curtain wall module according to claim 11, characterized in that, The first pressure p1 is 40 kPa-65 kPa; and / or The second pressure p2 is 50 kPa-85 kPa.

13. The method for preparing a photovoltaic curtain wall module according to claim 8, characterized in that, The preparation method further includes: The first laminate is laminated for a first preset time t1; The second laminate is laminated for a second preset time t2; The first preset duration t1 is greater than or equal to the second preset duration t2.

14. The method for preparing a photovoltaic curtain wall module according to claim 13, characterized in that, The first preset duration t1 is 20 min - 30 min; and / or The second preset duration t2 is 10min-20min.

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