Multifunctional high-strength solar photovoltaic aluminum profile suitable for building integrated photovoltaics (BIPV)

Abstract

The invention provides a multifunctional high-strength solar photovoltaic aluminum profile suitable for a building integrated photovoltaics (BIPV). The multifunctional high-strength solar photovoltaic aluminum profile comprises a profile body, a support connecting area, a BIPV assembly connecting area and a building structure connecting area. The aluminum profile has the advantages that the aluminum profile is composed of the profile body, the support connecting area, the BIPV assembly connecting area and the building structure connecting area, each area is high in structural strength and good in stability, and the aluminum profile is not prone to breakage in the installation process and convenient to install; the photovoltaic aluminum profile structure can be connected with a photovoltaic support, a BIPV assembly and a building structure at the same time, is three-in-one, complete in function and high in practicability, and meets the requirement of the photovoltaic aluminum profile structure needed by the BIPV.

Description

[Technical field]

[0001] The invention relates to the technical field of photovoltaics, and in particular to a multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV. [Background technology]

[0002] In recent years, with the continuous growth of global energy demand and the emphasis on environmental protection, solar photovoltaic power generation has received widespread attention as a clean and renewable energy source. Photovoltaic systems directly convert solar energy into electrical energy through the photoelectric conversion process, playing an important role in energy transformation. The reliability and efficiency of photovoltaic modules are crucial to the overall system performance, and the aluminum profiles used to support photovoltaic modules play an important role in this.

[0003] Photovoltaic aluminum profiles are usually used to support and fix photovoltaic modules. Their materials are generally lightweight, high-strength and corrosion-resistant aluminum alloys to ensure structural stability and life. Compared with other metal materials, aluminum alloys are not only light and easy to install, but also have excellent anti-oxidation and anti-corrosion properties, and can adapt to a variety of complex environments, including coastal areas, deserts and high-humidity areas. At the same time, aluminum profiles have good flexibility in processing and forming, and can be customized according to different design requirements to adapt to photovoltaic modules of various specifications.

[0004] BIPV technology integrates solar photovoltaic modules directly into the building structure to achieve an organic combination of the building's power generation function and architectural aesthetics, so that it can meet energy needs without affecting the building's appearance and function. In this context, the development of photovoltaic aluminum profiles becomes key. Compared with traditional independent photovoltaic systems, BIPV systems require photovoltaic modules to be closely integrated with building materials (such as curtain walls, roofs, windows, etc.), which puts higher requirements on the structural design of aluminum profiles. BIPV photovoltaic aluminum profiles need to have the following characteristics: high strength and light weight, excellent corrosion resistance and weather resistance, convenience of installation and maintenance, beauty and integration. Existing photovoltaic aluminum profiles suitable for BIPV have the following defects:

[0005] 1. The connection parts between aluminum profiles, brackets and BIPV photovoltaic modules have a relatively precise structure and small specifications. The extrusion requirements are relatively precise, the process is difficult to control, and the scrap rate is high. At the same time, it is easy to break during the installation process, and the structural strength and stability are not strong enough.

[0006] 2. Aluminum profiles can only connect brackets and BIPV photovoltaic modules, but cannot be connected to the supporting structure of the building. Their functions are not complete and their practicality is weak.

[0007] In view of this, the inventor of this case conducted in-depth research on the above-mentioned issues, which led to the emergence of this case. [Summary of the invention]

[0008] The present invention aims to solve the above-mentioned technical problems and provides a multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV. The aluminum profile consists of a profile body, a bracket connection area, a BIPV component connection area, and a building structure connection area. Each area has high structural strength and good stability. It is not easy to break during the installation process and is easy to install. It can simultaneously connect photovoltaic brackets, BIPV components and building structures. It is a trinity with complete functions and strong practicality, which meets the requirements of the photovoltaic aluminum profile structure required for BIPV.

[0009] The present invention is implemented as follows: a multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV, including a profile body, a bracket connection area, a BIPV component connection area, and a building structure connection area, the profile body includes a main board, a left side panel, a right side panel, and a main body bending plate, the left side panel and the right side panel are arranged relatively to each other, the left side panel is fixedly connected to the main board at one end and fixedly connected to the main body bending plate at the other end, the right side panel is fixedly connected to the main board at one end and fixedly connected to the main body bending plate at the other end; the main body bending plate includes a first bending horizontal plate, a bending main vertical plate, and a second bending horizontal plate, the upper end of the bending main vertical plate is vertically fixedly connected to the right end of the first bending horizontal plate, and the lower end is vertically fixedly connected to the left end of the second bending horizontal plate; the bracket connection area is integrally formed with the profile body , including a left clamping block and a right clamping block arranged relatively to each other, the left clamping block is fixedly connected to the lower end of the left side panel, and the right clamping block is fixedly connected to the lower end of the bent main vertical panel; the left clamping block, the first bent horizontal panel, the bent main vertical panel, and the right clamping block are arranged to form a bracket mounting groove; the BIPV component connection area is integrally formed with the profile body, including an upper clamping block and a lower clamping block arranged relatively to each other; the upper clamping block is fixedly connected to the right end of the main board, and the lower clamping block is fixedly connected to the right end of the right side panel; the upper clamping block, the right side panel, and the lower clamping block are arranged to form a BIPV component mounting groove; the building structure connection area is integrally formed with the profile body, including a first locking portion and a second locking portion, the first locking portion is fixedly arranged on the first bent horizontal panel, and the second locking portion is fixedly arranged on the right side panel.

[0010] Furthermore, the first locking portion is a first stud, on which a first screw hole is formed for screwing to the BIPV building support structure; the second locking portion is a second stud, on which a second screw hole is formed for screwing to the BIPV building support structure.

[0011] Furthermore, the first stud is arranged on the side of the first horizontal bar facing the main board, and the first stud is provided with a first through hole; the second stud is arranged on the side of the right side plate facing the BIPV component connection area, and the second stud is provided with a second through hole.

[0012] Furthermore, the left clamping block includes a first left vertical plate, a first left horizontal plate, a second left vertical plate, and a second left horizontal plate; the upper end of the first left vertical plate is fixedly connected to the left side plate; the left end of the first left horizontal plate is vertically fixedly connected to the lower end of the first left vertical plate, and the right end is vertically fixedly connected to the upper end of the second left vertical plate, and the left end of the second left horizontal plate is vertically fixedly connected to the lower end of the second left vertical plate; the right clamping block includes a right vertical plate and a right horizontal plate, the upper end of the right vertical plate is fixedly connected to the lower end of the bent main vertical plate, and the right end of the right horizontal plate is vertically fixedly connected to the lower end of the right vertical plate.

[0013] Furthermore, the upper clamping block includes an upper horizontal plate and an upper vertical plate, the left end of the upper horizontal plate is fixedly connected to the right end of the main plate, and the upper end of the upper vertical plate is vertically fixedly connected to the right end of the upper horizontal plate; the lower clamping block includes a lower bending plate and a lower vertical plate, the left end of the lower bending plate is fixedly connected to the right side plate, and the right end is vertically fixedly connected to the lower end of the lower vertical plate.

[0014] Furthermore, the lower bending plate includes a first lower bending horizontal plate, a bending lower vertical plate, and a second lower bending horizontal plate. The left end of the first lower bending horizontal plate is vertically fixedly connected to the right side plate, and the right end is vertically fixedly connected to the upper end of the bending lower vertical plate. The lower end of the bending lower vertical plate is vertically fixedly connected to the left end of the second lower bending horizontal plate, and the right end of the second lower bending horizontal plate is vertically fixedly connected to the lower end of the lower vertical plate.

[0015] Furthermore, a first extension plate is extended from the right side of the lower end of the right side plate, and a second extension plate is extended from the left side of the lower end of the bent lower vertical plate. The first extension plate, the right side plate, the first lower bent horizontal plate, the bent lower vertical plate, and the second extension plate are arranged to form a wire threading groove.

[0016] Furthermore, the aluminum profile is formed by extruding 6061 aluminum alloy.

[0017] Furthermore, the surface of the aluminum profile is coated with a hydrophobic and corrosion-resistant layer.

[0018] The advantages of the present invention are: the multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV of the present invention is composed of a profile body, a bracket connection area, a BIPV component connection area, and a building structure connection area, and is formed in one piece using an extrusion process. Each area has high structural strength and good stability, is not easy to break during installation, and is easy to install; it can simultaneously connect photovoltaic brackets, BIPV components and building structures, forming a trinity with complete functions and strong practicality, thus meeting the requirements of the photovoltaic aluminum profile structure required for BIPV.

Brief Description of the Drawings

[0019] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0020] Figure 1It is one of the structural schematic diagrams of the multifunctional high-strength solar photovoltaic aluminum profile in the present invention.

[0021] Figure 2 This is the second structural schematic diagram of the multifunctional high-strength solar photovoltaic aluminum profile in the present invention.

[0022] Figure 3 This is the third structural schematic diagram of the multifunctional high-strength solar photovoltaic aluminum profile in the present invention.

[0023] Figure 4 This is the fourth structural schematic diagram of the multifunctional high-strength solar photovoltaic aluminum profile in the present invention.

[0024] Reference numerals:

[0025] Profile body 1, main board 11, left side board 12, right side board 13, main body bending board 14, first bending horizontal board 141, bending main vertical board 142, second bending horizontal board 143, central cavity 15, bracket connection area 2, left clamping block 21, first left vertical board 211, first left horizontal board 212, second left vertical board 213, second left horizontal board 214, right clamping block 22, right vertical board 221, right horizontal board 222, bracket mounting groove 23, first extension board 24, second extension board 2 5. Wire threading groove 26, BIPV component connection area 3, upper clamping block 31, upper horizontal plate 311, upper vertical plate 312, lower clamping block 32, lower bending plate 321, first lower bent horizontal plate 3211, bent lower vertical plate 3212, second lower bent horizontal plate 3213, lower vertical plate 322, BIPV component installation groove 33, building structure connection area 4, first locking portion 41, second locking portion 42, first screw hole 43, second screw hole 44, first through hole 45, second through hole 46. [Specific implementation method]

[0026] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] Reference Figure 1-4As shown, the present invention provides a multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV, including a profile body 1, a bracket connection area 2, a BIPV component connection area 3, and a building structure connection area 4, the profile body 1 includes a main board 11, a left side panel 12, a right side panel 13, and a main body bending plate 14, the left side panel 12 and the right side panel 13 are arranged opposite to each other, the left side panel 12 is fixedly connected to the main board 11 at one end, and the other end is fixedly connected to the main body bending plate 14, the right side panel 13 is fixedly connected to the main board 11 at one end, and the other end is fixedly connected to the main body bending plate 14; the main board 11, the right side panel 13, the main body bending plate 14, and the left side panel 12 of the profile body 1 are surrounded to form a central cavity 15, through which the photovoltaic cable can pass, which is conducive to the orderly arrangement of the photovoltaic cables.

[0028] The main body bending plate 14 includes a first bending transverse plate 141, a bending main vertical plate 142, and a second bending transverse plate 143. The upper end of the bending main vertical plate 142 is vertically fixedly connected to the right end of the first bending transverse plate 141, and the lower end is vertically fixedly connected to the left end of the second bending transverse plate 143. The first bending transverse plate 141 and the bending main vertical plate 142 of the main body bending plate 14 are used to cooperate with the bracket connection area 2, so that the photovoltaic bracket is firmly and stably connected to the aluminum profile.

[0029] The bracket connection area 2 is integrally formed with the profile body 1, and includes a left clamping block 21 and a right clamping block 22 that are relatively arranged. The left clamping block 21 is fixedly connected to the lower end of the left side plate 12, and the right clamping block 22 is fixedly connected to the lower end of the bent main vertical plate 142; the left clamping block 21, the first bent horizontal plate 141, the bent main vertical plate 142, and the right clamping block 22 are surrounded to form a bracket installation groove 23.

[0030] The BIPV component connection area 3 is integrally formed with the profile body 1, and includes an upper clamping block 31 and a lower clamping block 32 that are relatively arranged; the upper clamping block 31 is fixedly connected to the right end of the main board 11, and the lower clamping block 32 is fixedly connected to the right end of the right side plate 13; the upper clamping block 31, the right side plate 13, and the lower clamping block 32 are surrounded to form a BIPV component installation groove 33, so that the BIPV component is firmly and stably connected to the aluminum profile.

[0031] The building structure connection area 4 is integrally formed with the profile body 1 , and includes a first locking portion 41 and a second locking portion 42 . The first locking portion 41 is fixed on the first bent transverse plate 141 , and the second locking portion 42 is fixed on the right side plate 13 .

[0032] The aluminum profile body 1, bracket connection area 2, BIPV component connection area 3, and building structure connection area 4 are integrally formed by extrusion process. The aluminum profile is composed of the profile body 1, bracket connection area 2, BIPV component connection area 3, and building structure connection area 4. Each area has high structural strength and good stability. It is not easy to break during installation and is easy to install. It can simultaneously connect the photovoltaic bracket, BIPV component and building structure. It is a trinity with complete functions and strong practicality, meeting the requirements of photovoltaic aluminum profile structure required by BIPV.

[0033] In the present invention, the building structure connection area 4 is used to connect the aluminum profile to the building structure; the first locking portion 41 is a first stud, and a first screw hole 43 is formed on the first stud for screwing with the BIPV building support structure; the second locking portion 42 is a second stud, and a second screw hole 44 is formed on the second stud for screwing with the BIPV building support structure.

[0034] In the present invention, the first stud is arranged on the side of the first horizontal bar facing the main board 11, and the first stud is provided with a first through hole 45; the second stud is arranged on the side of the right side plate 13 facing the BIPV component connection area 3, and the second stud is provided with a second through hole 46. By providing through holes on the first stud and the second stud, the aluminum profile is easier to extrude.

[0035] In the present invention, the bracket connecting area 2 is used to connect the aluminum profile with the photovoltaic bracket; the left clamping block 21 includes a first left vertical plate 211, a first left horizontal plate 212, a second left vertical plate 213, and a second left horizontal plate 214; the upper end of the first left vertical plate 211 is fixedly connected to the left side plate 12; the left end of the first left horizontal plate 212 is vertically fixedly connected to the lower end of the first left vertical plate 211, and the right end is vertically fixedly connected to the upper end of the second left vertical plate 213, and the left end of the second left horizontal plate 214 is vertically fixedly connected to the lower end of the second left vertical plate 213; the right clamping block 22 includes a right vertical plate 221 and a right horizontal plate 222, the upper end of the right vertical plate 221 is fixedly connected to the lower end of the bent main vertical plate 142, and the right end of the right horizontal plate 222 is vertically fixedly connected to the lower end of the right vertical plate 221. The first left transverse plate 212, the first left vertical plate 211, the first bent transverse plate 141, and the bent main vertical plate 142 are arranged to form a standardized component slot for adapting to the connection structure.

[0036] In the present invention, the BIPV component connection area 3 is used to connect the aluminum profile with the BIPV photovoltaic component; the upper clamping block 31 includes an upper horizontal plate 311 and an upper vertical plate 312, the left end of the upper horizontal plate 311 is fixedly connected to the right end of the main board 11, and the upper end of the upper vertical plate 312 is vertically fixedly connected to the right end of the upper horizontal plate 311; the lower clamping block 32 includes a lower bending plate 321 and a lower vertical plate 322, the left end of the lower bending plate 321 is fixedly connected to the right side plate 13, and the right end is vertically fixedly connected to the lower end of the lower vertical plate 322.

[0037] In the present invention, the lower bending plate 321 includes a first lower bending horizontal plate 3211, a bending lower vertical plate 3212, and a second lower bending horizontal plate 3213. The left end of the first lower bending horizontal plate 3211 is vertically fixedly connected to the right side plate 13, and the right end is vertically fixedly connected to the upper end of the bending lower vertical plate 3212. The lower end of the bending lower vertical plate 3212 is vertically fixedly connected to the left end of the second lower bending horizontal plate 3213, and the right end of the second lower bending horizontal plate 3213 is vertically fixedly connected to the lower end of the lower vertical plate 322.

[0038] In the present invention, a first extension plate 24 is extended from the right side of the lower end of the right side plate 13, and a second extension plate 25 is extended from the left side of the lower end of the bent lower vertical plate 3212. The first extension plate 24, the right side plate 13, the first lower bent horizontal plate 3211, the bent lower vertical plate 3212, and the second extension plate 25 are arranged to form a wire threading groove 26.

[0039] In the present invention, the aluminum profile is extruded from 6061 aluminum alloy, which is easy to extrude and has a low scrap rate.

[0040] In the present invention, the surface of the aluminum profile is coated with a hydrophobic and corrosion-resistant layer. The preparation process of the hydrophobic and corrosion-resistant layer comprises the following steps:

[0041] Step 1: Pretreatment of raw materials: pretreatment of hydrophobic nanoparticles to ensure uniform dispersion in the solvent; placing 12-18 parts of hydrophobic nanoparticles in 36-54 parts of ethanol solution and dispersing them using an ultrasonic disperser; using ethanol solution to dissolve and disperse the nanoparticles will help uniform spraying of subsequent coatings.

[0042] Step 2: Prepare a base solution, add 45-55 parts of a hydrophobic polymer matrix into 8-12 parts of a MEK solvent, stir until completely dissolved to form a polymer solution, slowly add dispersed hydrophobic nanoparticles into the polymer solution, and keep stirring at a low speed to ensure uniform mixing; add 2-4 parts of a cross-linking agent and 2-4 parts of an adhesive and stir evenly, which helps to enhance the adhesion and adhesion between the hydrophobic nanoparticles and the hydrophobic polymer matrix; add 3-5 parts of a UV stabilizer and 2-4 parts of an antibacterial preservative, and continue stirring until uniform; a coating solution is formed.

[0043] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0044] The preparation process of the self-cleaning, hydrophobic and corrosion-resistant solar photovoltaic aluminum profile in this embodiment is made of an optimized combination of hydrophobic nanoparticles, hydrophobic polymers, UV stabilizers and other ingredients. Through reasonable spraying and curing treatments, a uniform and stable self-cleaning, hydrophobic and corrosion-resistant coating is formed on the surface of the aluminum profile, making the aluminum profile easy to clean and highly weather-resistant. It also eliminates the need to set numerous drainage strips on the surface of the aluminum profile, reducing the extrusion requirements and scrap rate of the aluminum profile.

[0045] In this embodiment, hydrophobic nanoparticles are the key to forming a rough surface. A higher content of nanoparticles will enhance the hydrophobic effect, but too high a content may increase the brittleness of the coating and affect adhesion. The hydrophobic nanoparticles are silicon dioxide nanoparticles (SiO2) or titanium dioxide nanoparticles (TiO2). Preferably, the hydrophobic nanoparticles are titanium dioxide nanoparticles.

[0046] In this embodiment, the hydrophobic polymer matrix is ​​the main component of the coating, which plays the role of hydrophobic bonding of nanoparticles and ensuring overall hydrophobicity; a high content of the hydrophobic polymer matrix can improve the flexibility and adhesion of the coating and ensure durability. The hydrophobic polymer matrix is ​​a fluorinated polymer, preferably, the fluorinated polymer is any one of polytetrafluoroethylene, polyvinylidene fluoride, perfluoroalkoxy polymer, and fluorinated ethylene propylene.

[0047] In this embodiment, the cross-linking agent and the adhesive ensure the adhesion and durability of the coating, ensure that the coating is firmly attached to the surface of the aluminum profile, and enhance the bonding between the hydrophobic nanoparticles and the hydrophobic polymer matrix. Preferably, the cross-linking agent is KH550 silane coupling agent; and the adhesive is siloxane.

[0048] In this embodiment, the UV stabilizer is used to protect the durability of the coating and avoid aging caused by UV rays. Preferably, the UV stabilizer is zinc oxide.

[0049] In this embodiment, the antimicrobial preservative is silver nanoparticles. If used in a humid or coastal environment, the ratio of the antimicrobial agent to the preservative is usually 1% to 5%, and their addition amount should be controlled under the premise of effectively inhibiting microbial growth and corrosion without affecting other properties of the coating.

[0050] The beneficial effects of the hydrophobic and corrosion-resistant layer of the present invention are described below through several experimental groups and comparative groups. The hydrophobicity and anti-corrosion ability of the aluminum profile surface sprayed with the hydrophobic and corrosion-resistant layer are tested. The hydrophobicity test standard is based on GB / T 42270-2022, and the anti-corrosion ability test standard is based on GB / T 10123-2001.

[0051] Experimental Group 1

[0052] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0053] Step 1: Pretreatment of raw materials: pretreatment of titanium dioxide nanoparticles: 15 parts of titanium dioxide nanoparticles are placed in 45 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0054] Step 2: Prepare a base solution, add 50 parts of polytetrafluoroethylene to 10 parts of MEK solvent, stir until completely dissolved to form a polymer solution; slowly add dispersed titanium dioxide nanoparticles to the polymer solution, keep stirring at a low speed; add 2 parts of KH550 silane coupling agent and 2 parts of siloxane and stir evenly; add 3 parts of zinc oxide and 3 parts of silver nanoparticles, continue stirring until uniform; form a coating solution;

[0055] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0056] Experimental Group 2

[0057] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0058] Step 1: Pretreatment of raw materials: pretreatment of titanium dioxide nanoparticles: 18 parts of titanium dioxide nanoparticles are placed in 54 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0059] Step 2: Prepare a base solution, add 55 parts of polytetrafluoroethylene to 12 parts of MEK solvent, stir until completely dissolved to form a polymer solution; slowly add dispersed titanium dioxide nanoparticles to the polymer solution, keep stirring at a low speed; add 4 parts of KH550 silane coupling agent and 4 parts of siloxane and stir evenly; add 5 parts of zinc oxide and 4 parts of silver nanoparticles, continue stirring until uniform; form a coating solution;

[0060] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0061] Experimental Group 3

[0062] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0063] Step 1: Pretreatment of raw materials: Pretreatment of titanium dioxide nanoparticles: 12 parts of titanium dioxide nanoparticles are placed in 36 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0064] Step 2: prepare a base solution, add 45 parts of polytetrafluoroethylene to 8 parts of MEK solvent, stir until completely dissolved to form a polymer solution; slowly add dispersed titanium dioxide nanoparticles to the polymer solution, keep stirring at a low speed; add 2 parts of KH550 silane coupling agent and 2 parts of siloxane and stir evenly; add 3 parts of zinc oxide and 2 parts of silver nanoparticles, continue stirring until uniform; form a coating solution;

[0065] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0066] Experimental Group 4

[0067] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0068] Step 1: Pretreatment of raw materials: Pretreatment of titanium dioxide nanoparticles: 16 parts of titanium dioxide nanoparticles are placed in 50 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0069] Step 2: Prepare a base solution, add 52 parts of polytetrafluoroethylene to 11 parts of MEK solvent, stir until completely dissolved to form a polymer solution; slowly add dispersed titanium dioxide nanoparticles to the polymer solution, keep stirring at a low speed; add 3 parts of KH550 silane coupling agent and 3 parts of siloxane and stir evenly; add 4 parts of zinc oxide and 3 parts of silver nanoparticles, continue stirring until uniform; form a coating solution;

[0070] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0071] Experimental Group 5

[0072] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0073] Step 1: Pretreatment of raw materials: Pretreatment of silica nanoparticles: 15 parts of silica nanoparticles are placed in 45 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0074] Step 2: Prepare a base solution, add 50 parts of polytetrafluoroethylene to 10 parts of MEK solvent, stir until completely dissolved to form a polymer solution; slowly add dispersed silica nanoparticles to the polymer solution, keep stirring at a low speed; add 2 parts of KH550 silane coupling agent and 2 parts of siloxane and stir evenly; add 3 parts of zinc oxide and 3 parts of silver nanoparticles, continue stirring until uniform; form a coating solution;

[0075] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0076] Experimental Group 6

[0077] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0078] Step 1: Pretreatment of raw materials: Pretreatment of silica nanoparticles: 15 parts of silica nanoparticles are placed in 45 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0079] Step 2: prepare a base solution, add 50 parts of polyvinylidene fluoride to 10 parts of MEK solvent, stir until completely dissolved to form a polymer solution; slowly add dispersed silica nanoparticles to the polymer solution, keep stirring at a low speed; add 2 parts of KH550 silane coupling agent and 2 parts of siloxane and stir evenly; add 3 parts of zinc oxide and 3 parts of silver nanoparticles, continue stirring until uniform; form a coating solution;

[0080] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0081] Comparison group 1

[0082] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0083] Step 1: Pretreatment of raw materials: pretreatment of titanium dioxide nanoparticles: 15 parts of titanium dioxide nanoparticles are placed in 45 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0084] Step 2: Add 2 parts of KH550 silane coupling agent and 2 parts of siloxane to the dispersed titanium dioxide nanoparticles and stir evenly; add 3 parts of zinc oxide and 3 parts of silver nanoparticles and continue stirring until uniform; form a coating solution;

[0085] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0086] Comparison group 2

[0087] The preparation process of the hydrophobic corrosion-resistant layer comprises the following steps:

[0088] Step 1: Pretreatment of raw materials: pretreatment of titanium dioxide nanoparticles: 15 parts of titanium dioxide nanoparticles are placed in 45 parts of ethanol solution and dispersed using an ultrasonic disperser;

[0089] Step 2: Prepare a base solution, add 50 parts of polytetrafluoroethylene to 10 parts of MEK solvent, stir until completely dissolved to form a polymer solution; slowly add dispersed titanium dioxide nanoparticles to the polymer solution, and keep stirring at a low speed; add 2 parts of KH550 silane coupling agent and 2 parts of siloxane and stir evenly; add 3 parts of zinc oxide and continue stirring until uniform; form a coating solution;

[0090] Step 3: Use high-voltage electrostatic spraying to spray the coating solution onto the aluminum profile, place the aluminum profile in an oven, and bake at 120-150°C for 1-2 hours until it is completely cured, and finally form a hydrophobic and corrosion-resistant layer.

[0091] Table 1 Parameters of hydrophobic and anti-corrosion performance of aluminum profiles in each experimental group and comparison group

[0092]

[0093] The strength of the hydrophobic ability is determined by testing the contact angle between the liquid and the aluminum profile surface. For example, a contact angle of 90° indicates that the liquid and the aluminum profile surface are neither particularly friendly nor particularly repulsive; when the contact angle is <90°, the interaction between the liquid and the aluminum profile surface is strong, and the liquid can quickly and evenly cover the solid surface. This phenomenon is called hydrophilicity; when the contact angle is > When the contact angle is 90°, the interaction force between the liquid and the aluminum profile surface is weak, which makes it difficult for the liquid to evenly cover the solid surface. This phenomenon is called hydrophobicity. When the contact angle is 90°, the liquid is neither strongly attracted nor strongly repelled by the aluminum profile surface, and is in an intermediate state. In this state, the liquid may show partial wetting or non-wetting, depending on other factors such as liquid surface tension and aluminum profile surface roughness. The following conclusions can be drawn from Table 1:

[0094] 1. The contact angles of the aluminum profiles in experimental groups 1-6 are all ≥90°, indicating that the hydrophobic and corrosion-resistant layer on the surface of the aluminum profile makes the aluminum profile highly hydrophobic, and the interaction force between the liquid (rainwater) and the surface of the aluminum profile is weak, so it is not easy to adhere to the surface of the aluminum profile, and has a self-cleaning effect.

[0095] 2. The surface coating of the aluminum profile in comparison group 1 does not add a hydrophobic polymer matrix, and the contact angle is <90°, which shows hydrophilicity and is more susceptible to the attachment of liquids and impurities.

[0096] 3. The surface coating of the aluminum profile in comparison group 2 does not contain silver nanoparticles, has poor anti-corrosion ability, and is unqualified.

[0097] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV, comprising a profile body, a bracket connection area, a BIPV component connection area, and a building structure connection area, characterized in that: The profile body comprises a main board, a left side board, a right side board, and a main body bending board. The left side board and the right side board are arranged opposite to each other. One end of the left side board is fixedly connected to the main board, and the other end is fixedly connected to the main body bending board. One end of the right side board is fixedly connected to the main board, and the other end is fixedly connected to the main body bending board. The main body bending board comprises a first bending horizontal board, a bending main vertical board, and a second bending horizontal board. The upper end of the bending main vertical board is vertically fixedly connected to the right end of the first bending horizontal board, and the lower end is vertically fixedly connected to the left end of the second bending horizontal board. The bracket connection area is integrally formed with the profile body, and includes a left clamping block and a right clamping block arranged opposite to each other, wherein the left clamping block is fixedly connected to the lower end of the left side plate, and the right clamping block is fixedly connected to the lower end of the bent main vertical plate; the left clamping block, the first bent horizontal plate, the bent main vertical plate, and the right clamping block are surrounded to form a bracket installation groove; The BIPV component connection area is integrally formed with the profile body, and includes an upper clamping block and a lower clamping block arranged opposite to each other; the upper clamping block is fixedly connected to the right end of the main board, and the lower clamping block is fixedly connected to the right end of the right side board; the upper clamping block, the right side board, and the lower clamping block are surrounded to form a BIPV component installation slot; The building structure connection area is integrally formed with the profile body, and includes a first locking portion and a second locking portion, wherein the first locking portion is fixedly arranged on the first bent transverse plate, and the second locking portion is fixedly arranged on the right side plate.

2. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in claim 1, characterized in that: The first locking part is a first stud, on which a first screw hole is formed for screwing with the BIPV building support structure; the second locking part is a second stud, on which a second screw hole is formed for screwing with the BIPV building support structure.

3. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in claim 2, characterized in that: The first stud is arranged on the side of the first horizontal bar facing the main board, and the first stud is provided with a first through hole; the second stud is arranged on the side of the right side board facing the BIPV component connection area, and the second stud is provided with a second through hole.

4. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in any one of claims 1 to 3, characterized in that: The left clamping block includes a first left vertical plate, a first left horizontal plate, a second left vertical plate, and a second left horizontal plate; the upper end of the first left vertical plate is fixedly connected to the left side plate; the left end of the first left horizontal plate is vertically fixedly connected to the lower end of the first left vertical plate, and the right end is vertically fixedly connected to the upper end of the second left vertical plate, and the left end of the second left horizontal plate is vertically fixedly connected to the lower end of the second left vertical plate; The right clamping block comprises a right vertical plate and a right horizontal plate, the upper end of the right vertical plate is fixedly connected to the lower end of the bent main vertical plate, and the right end of the right horizontal plate is vertically fixedly connected to the lower end of the right vertical plate.

5. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in claim 4, characterized in that: The upper clamping block includes an upper horizontal plate and an upper vertical plate, the left end of the upper horizontal plate is fixedly connected to the right end of the main plate, and the upper end of the upper vertical plate is vertically fixedly connected to the right end of the upper horizontal plate; The lower clamping block comprises a lower bending plate and a lower vertical plate. The left end of the lower bending plate is fixedly connected to the right side plate, and the right end is vertically fixedly connected to the lower end of the lower vertical plate.

6. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in claim 5, characterized in that: The lower bending plate includes a first lower bending horizontal plate, a bending lower vertical plate, and a second lower bending horizontal plate. The left end of the first lower bending horizontal plate is vertically fixedly connected to the right side plate, and the right end is vertically fixedly connected to the upper end of the bending lower vertical plate. The lower end of the bending lower vertical plate is vertically fixedly connected to the left end of the second lower bending horizontal plate, and the right end of the second lower bending horizontal plate is vertically fixedly connected to the lower end of the lower vertical plate.

7. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in claim 6, characterized in that: A first extension plate is extended from the right side of the lower end of the right side plate, and a second extension plate is extended from the left side of the lower end of the bent lower vertical plate. The first extension plate, the right side plate, the first lower bent horizontal plate, the bent lower vertical plate, and the second extension plate are arranged to form a wire threading groove.

8. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in claim 1, characterized in that: The aluminum profile is made of 6061 aluminum alloy by extrusion.

9. The multifunctional high-strength solar photovoltaic aluminum profile suitable for BIPV as claimed in claim 1, characterized in that: The surface of the aluminum profile is coated with a hydrophobic and corrosion-resistant layer.

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