Integrated photovoltaic sound barrier

Abstract

The invention discloses an integrated photovoltaic sound barrier which comprises a single-face power generation photovoltaic sound barrier module, a sound barrier interaction module and a double-face power generation photovoltaic sound barrier module. The structures of the single-sided power generation photovoltaic sound barrier module, the sound barrier interaction module and the double-sided power generation photovoltaic sound barrier module are constructed to be stacked up and down to form a photovoltaic sound barrier body, so that full-frequency noise within the range of 200Hz-2000Hz is effectively absorbed. According to the photovoltaic sound barrier, the photovoltaic power generation function and the sound absorption and insulation noise reduction function of the photovoltaic sound barrier are integrated, through modular design and stacking assembly, the use area and the power generation efficiency of a photovoltaic assembly are effectively improved, the sound absorption frequency band is widened, and the noise reduction effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power generation and sound barrier application, and in particular to an integrated photovoltaic sound barrier. Background Art

[0002] Photovoltaic sound barriers (PVNBs) are a new type of green energy and environmentally friendly facility that combines solar power generation with noise reduction. Through multiple technologies, including sound absorption and insulation, and power generation, they transform existing infrastructure into a comprehensive energy facility, achieving multiple benefits, including reducing environmental noise pollution, increasing clean power generation, and reducing carbon emissions. As a distributed photovoltaic technology with great potential for application in urban core areas, PVNBs, with their long distribution distance and advantageous geographical location, will play a significant role in alleviating energy supply pressures along urban core transportation arteries, and thus hold significant research value.

[0003] Despite significant progress in photovoltaic sound barrier research, several challenges remain in both technology and application. For example, existing engineering applications often utilize photovoltaic modules directly as sound barriers or utilize a split-type design that separates the photovoltaic modules from the traditional sound barrier. This design suffers from limited photovoltaic surface area, poor sound absorption (the primary frequency range for traffic noise is 200Hz to 2000Hz, and existing sound-absorbing materials cannot fully cover this frequency range, particularly at frequencies below 400Hz), and insufficient overall power generation efficiency and noise reduction. Therefore, it is necessary to research integrated photovoltaic sound barriers that combine photovoltaic power generation with sound absorption and noise reduction capabilities. This approach, while taking into account the environmental friendliness of the materials and structural stability, can further improve the power generation efficiency and noise reduction effectiveness of photovoltaic sound barriers. Summary of the Invention

[0004] The purpose of this application is to provide an integrated photovoltaic sound barrier, which integrates photovoltaic power generation function and sound absorption and noise reduction function into one. Through modular design, it can achieve full-band noise reduction technical effects within 200Hz~2000Hz, and effectively improve the utilization area and power generation efficiency of photovoltaic components.

[0005] The present application provides an integrated photovoltaic sound barrier, including a single-sided power generation photovoltaic sound barrier module, a sound barrier interaction module, and a double-sided power generation photovoltaic sound barrier module, wherein: The single-sided photovoltaic sound barrier module includes a metal perforated panel, an environmentally friendly sound-absorbing material, a single-sided photovoltaic module backplane, and a first metal sound insulation board. The metal perforated panel and the single-sided photovoltaic module backplane are arranged opposite to each other. The metal perforated panel, the single-sided photovoltaic module backplane, and the first metal sound insulation board enclose a first cavity. The first cavity is filled with the environmentally friendly sound-absorbing material. The overall shape of the environmentally friendly sound-absorbing material is sinusoidal. The projected length of the environmentally friendly sound-absorbing material in the length direction of the metal perforated panel is 300Hz-400Hz, corresponding to a wavelength of 0.85m-1.14m. The sound barrier interaction module includes a transparent display screen, a transparent sound insulation board, and a second metal sound insulation board. The transparent display screen and the transparent sound insulation board are arranged opposite to each other. The transparent display screen, the transparent sound insulation board, and the second metal sound insulation board enclose a second cavity. The transparent display screen serves as an intelligent interactive interface and is directly powered by the electricity generated by the single-sided photovoltaic sound barrier module and the double-sided photovoltaic sound barrier module. The double-sided photovoltaic sound barrier module is configured to generate electricity using double-sided photovoltaic modules and mainly absorb low-frequency noise with a frequency of 200Hz-300Hz; The structures of the single-sided photovoltaic sound barrier module, the sound barrier interaction module and the double-sided photovoltaic sound barrier module are constructed to be stacked up and down to form a photovoltaic sound barrier screen, which can effectively absorb full-frequency noise in the range of 200Hz~2000Hz.

[0006] In another preferred example, the number of the single-sided photovoltaic sound barrier modules is one or more, and / or the number of the sound barrier interaction modules is one or more, and / or the number of the double-sided photovoltaic sound barrier modules is one or more, and each module can be stacked freely according to the requirements of the application scenario.

[0007] In another preferred example, the width of the environmentally friendly sound-absorbing material in the single-sided photovoltaic sound barrier module in the direction from the metal perforated panel to the back plate of the single-sided photovoltaic component is between 0.1m and 0.3m.

[0008] In another preferred example, the width of the environmentally friendly sound-absorbing material in the single-sided photovoltaic sound barrier module along the width direction of the first cavity is between 0.1m and 0.3m.

[0009] In another preferred embodiment, the environmentally friendly sound-absorbing material is polyester fiber.

[0010] In another preferred example, the single-sided photovoltaic sound barrier module is configured to absorb medium and high frequency noise with a frequency of 300Hz-2000Hz, wherein the sound absorption coefficient in the frequency band of 300Hz-400Hz can reach above 0.9.

[0011] In another preferred embodiment, a damping layer is provided on the back of the environmentally friendly sound-absorbing material, and the back refers to the side opposite to the front side of the environmentally friendly sound-absorbing material facing the sound source.

[0012] In another preferred example, the bifacial photovoltaic sound barrier module includes a transparent micro-perforated plate, a bifacial photovoltaic module back plate and a third metal sound insulation plate. The transparent micro-perforated plate is parallel to and opposite to the bifacial photovoltaic module back plate. The transparent micro-perforated plate, the bifacial photovoltaic module back plate and the third metal sound insulation plate together form a Helmholtz resonance cavity.

[0013] In another preferred example, the third metal sound insulation panel includes a first panel, a second panel, and a first connecting portion located between the first and second panels. The first connecting portion includes a first groove protruding from the first panel toward the Helmholtz resonance cavity, a second groove protruding from the second panel toward the Helmholtz resonance cavity, and a third groove connecting the first groove and the second groove. The first, second, and third grooves form a U-shaped groove. The transparent microperforated plate is configured to be inserted into the U-shaped groove, thereby connecting the transparent microperforated plate and the third metal sound insulation panel.

[0014] In another preferred example, the double-sided photovoltaic sound barrier module further includes a metal keel, which is located in the Helmholtz resonance cavity and is used to support the transparent micro-perforated plate and the back panel of the double-sided photovoltaic assembly.

[0015] In another preferred example, the back plate of the bifacial photovoltaic module is fixedly connected to the first panel and the second panel of the third metal sound insulation board.

[0016] In another preferred example, the metal keel is parallel to the first panel and the second panel.

[0017] In another preferred example, the metal keel is fixedly connected to the third groove.

[0018] In another preferred example, the overall thickness of the double-sided photovoltaic sound barrier module is 80mm-200mm, the thickness of the transparent micro-perforated plate is not less than 2mm, the perforation diameter is not more than 1mm, and the perforation rate is not more than 2%.

[0019] In another preferred example, the transparent sound insulation board is made of cadmium telluride power generation glass, acrylic, PC or tempered glass, the transparent display screen is OLED, LED or LCD, and the smart interactive interface is configured to perform at least one of the following functions: (a) dynamic advertising information delivery, (b) real-time traffic data visualization display and (c) environmental noise intensity monitoring and feedback.

[0020] In another preferred example, the integrated photovoltaic sound barrier is stacked with single-sided power generation photovoltaic sound barrier modules, sound barrier interaction modules, and double-sided power generation photovoltaic sound barrier modules from bottom to top. The integrated photovoltaic sound barrier also includes columns. The single-sided power generation photovoltaic sound barrier modules, sound barrier interaction modules, and double-sided power generation photovoltaic sound barrier modules are arranged between the columns. Each module can be stacked freely according to the requirements of the application scenario.

[0021] This application has at least one of the following advantages: (a) The present invention integrates the photovoltaic power generation function and the sound absorption and noise reduction function of the photovoltaic sound barrier. Through modular design, it effectively increases the usable area, power generation efficiency and overall noise reduction effect of the photovoltaic module. It can be freely assembled on site according to the needs of the application scenario. (b) The single-sided photovoltaic sound barrier module of the present invention can effectively absorb medium and high-frequency noise (300Hz-2000Hz), and the double-sided photovoltaic sound barrier module can effectively absorb low-frequency noise (200Hz-300Hz), achieving good noise reduction effects in the main traffic noise frequency range of 200Hz-2000Hz; (c) The present invention designs the environmentally friendly sound-absorbing material in the single-sided photovoltaic sound barrier module into a wavy shape, and designs the frequency of the bending vibration when the incident sound wave and the sound-absorbing material produce a coincidence effect to be 300Hz-400Hz, further improving the absorption effect of medium-frequency sound energy; (d) The present invention provides a transparent display screen within the transparent sound barrier module (sound barrier interaction module), which serves as an intelligent interactive interface for advertising and traffic information display, thereby generating additional economic benefits while effectively enhancing the urban landscape. Specifically, the sound barrier interaction module is used to enhance the sound insulation effect of the barrier and provide intelligent interactive functionality. (e) The present invention designs the connection method between the transparent micro-perforated plate in the double-sided photovoltaic sound barrier module and other components to be plug-in, which is different from the traditional fixed connection. This method facilitates the replacement of the plate surface at any time.

[0022] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features described in detail below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Due to space limitations, they will not be listed here one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. It should be understood that the drawings described below are merely some implementation examples of the present invention, and those skilled in the art can also derive other implementation examples based on these drawings without inventive effort.

[0024] Figure 1 This is a front schematic diagram of an integrated photovoltaic sound barrier structure according to an embodiment of the present application; Figure 2 This is a schematic diagram of the back of an integrated photovoltaic sound barrier structure according to an embodiment of the present application; Figure 3 This is a schematic top view of a single-sided photovoltaic sound barrier module structure of an integrated photovoltaic sound barrier according to an embodiment of the present application; Figure 4 This is a schematic top view of the sound barrier interaction module structure of an integrated photovoltaic sound barrier according to an embodiment of the present application; Figure 5 This is a schematic top view of a double-sided photovoltaic sound barrier module structure of an integrated photovoltaic sound barrier according to an embodiment of the present application; Figure 6 This is a schematic structural diagram of a U-shaped groove formed by the third metal sound insulation board in a double-sided photovoltaic sound barrier module of an integrated photovoltaic sound barrier according to an embodiment of the present application; Figure 7 It is the simulation result of the sound absorption coefficient and sound absorption frequency of the sound absorption structure of the single-sided photovoltaic sound barrier module according to an embodiment of the present application.

[0025] In the accompanying drawings, the following are marked 1-Steel column 2-Single-sided photovoltaic sound barrier module 21-Metal perforated panel 22-Environmentally friendly sound-absorbing materials 23-Single-sided photovoltaic module backplane 24-First metal sound insulation board 25-First cavity 3-Sound barrier interaction module 31-Transparent display 32-Transparent sound insulation board 34-Second metal sound insulation board 35-Second cavity 4-Double-sided photovoltaic sound barrier module 41-Transparent micro-perforated plate 42-Metal keel 43-Bifacial photovoltaic module backplane 44 - Third metal sound insulation panel 45 - U-shaped groove 46 - Sealed top cover 47 - Helmholtz resonance cavity 441 - First panel 442 - Second panel 451 - First groove 452 - Second groove 453 - Third groove Detailed implementation manners

[0026] Through extensive and in-depth research, the inventor of the present application has developed an integrated photovoltaic sound barrier for the first time. By integrating the photovoltaic components and the sound absorption and noise reduction structure of the photovoltaic sound barrier into one body, the use area of the photovoltaic components of the photovoltaic sound barrier and the power generation efficiency, and the full-frequency sound absorption performance within 200 Hz to 2000 Hz are effectively improved, and the problems of insufficient overall power generation efficiency and noise reduction effect are solved. At the same time, by modularizing the photovoltaic sound barrier, according to the requirements of the application scenario, the "block-type" matching and assembly of the photovoltaic sound barrier can be realized on-site, which is flexible and simple. For example, the photovoltaic sound barrier of the present application is applicable to environments with noise reduction requirements such as urban traffic, highways, railways, power plants, converter stations, substations and other industrial enterprises.

[0027] The integrated photovoltaic sound barrier of the present application includes steel columns and a photovoltaic sound barrier screen body between the steel columns. The photovoltaic sound barrier screen body is stacked from bottom to top by single-sided power generation photovoltaic sound barrier modules, transparent sound barrier modules and double-sided power generation photovoltaic sound barrier modules to a position flush with the top of the steel columns. The present invention integrates the photovoltaic power generation function and the sound absorption and noise reduction function of the photovoltaic sound barrier. Through modular design and stacked assembly, the use area of the photovoltaic components and the power generation efficiency are effectively improved, and the sound absorption frequency band is broadened and the noise reduction effect is enhanced.

[0028] In the following description, many technical details are presented for the convenience of the reader to understand the present application. However, those of ordinary skill in the art can understand that even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be achieved.

[0029] Terms As used herein, the terms "sound barrier interaction module" and "transparent sound barrier module" can be used interchangeably; In the present invention, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0030] ​ This application provides an integrated photovoltaic sound barrier. By integrating photovoltaic modules and sound-absorbing and noise-reducing structures, this effectively increases the photovoltaic module's usable area and power generation efficiency, as well as its full-frequency sound absorption performance from 200Hz to 2000Hz, thereby addressing the issues of insufficient overall power generation efficiency and noise reduction. Furthermore, by modularizing the photovoltaic sound barrier, it can be assembled on-site in a flexible and simple "building block" manner, tailored to the needs of the application scenario.

[0031] In one embodiment, the present application provides an integrated photovoltaic sound barrier comprising steel columns 1, with a photovoltaic sound barrier body disposed between the steel columns. The photovoltaic sound barrier body comprises a single-sided photovoltaic sound barrier module 2, a sound barrier interaction module 3, and a double-sided photovoltaic sound barrier module 4. Each module is assembled on-site, from bottom to top, until it is flush with the top of the steel columns, as required by the application scenario.

[0032] Preferably, the single-sided photovoltaic sound barrier module 2 includes a perforated metal panel 21, environmentally friendly sound-absorbing material 22, a single-sided photovoltaic module backsheet 23, and a first metal sound insulation panel 24. The perforated metal panel 21 is parallel to the single-sided photovoltaic module backsheet 23 and is fixedly connected to the first metal sound insulation panel 24 on all four sides. The perforated metal panel 21, the single-sided photovoltaic module backsheet 23, and the first metal sound insulation panel 24 enclose a first cavity 25, which is filled with environmentally friendly sound-absorbing material to absorb mid- and high-frequency noise.

[0033] Preferably, the environmentally friendly sound-absorbing material 22 is wavy as a whole. The wavy shape is sinusoidal, and the horizontal projection length is about 0.85m~1.14m corresponding to the wavelength of 300Hz~400Hz. A damping layer is attached to the back of the wavy environmentally friendly sound-absorbing material 22 (facing the sound receiving point). θ When the angular wavy environmentally friendly sound-absorbing material 22 is incident from the front (facing the sound source), if the wavelength of the incident sound wave The bending wave wavelength corresponding to the wavy environmentally friendly sound-absorbing material 22 satisfy When the incident sound wave acts on the wavy environmentally friendly sound-absorbing material 22, the effect of the incident sound wave coincides with the bending wave vibration of the wavy environmentally friendly sound-absorbing material 22. At this time, the bending vibration of the wavy environmentally friendly sound-absorbing material 22 reaches a maximum value. Under the action of the environmentally friendly sound-absorbing material 22 and the back damping layer, the incident sound energy is absorbed.

[0034] Preferably, the environmentally friendly sound-absorbing material 22 is polyester fiber, followed by rock wool and glass wool.

[0035] Preferably, the sound barrier interaction module 3 includes a transparent display screen 31, a transparent sound insulation panel 32, and a second metal sound insulation panel 34. The transparent display screen 31 is parallel to the transparent sound insulation panel 32, and its four sides are fixedly connected to the second metal sound insulation panel 34. The transparent display screen 31, the transparent sound insulation panel 32, and the second metal sound insulation panel 34 enclose a second cavity 35. The transparent sound insulation panel 32 is made of cadmium telluride electric glass, acrylic, PC, or tempered glass, while the transparent display screen 31 is made of OLED, LED, or LCD.

[0036] Preferably, the transparent display screen 31 is directly powered by green electricity generated by photovoltaics, which is used for advertising and traffic data display, realizing the on-site consumption of photovoltaic power generation and generating certain economic benefits.

[0037] Preferably, the bifacial photovoltaic sound barrier module 4 comprises a transparent microperforated plate 41, a metal keel 42, a bifacial photovoltaic module backplane 43, and a third metal sound insulation plate 44. The transparent microperforated plate 41 is parallel to the bifacial photovoltaic module backplane 43. Preferably, the bifacial photovoltaic module backplane 43 is fixedly connected to the third metal sound insulation plate 44. The transparent microperforated plate 41, the bifacial photovoltaic module backplane 43, and the third metal sound insulation plate 44 together form a Helmholtz resonance cavity 47 to absorb low-frequency noise. The metal keel 42 is placed within the Helmholtz resonance cavity 47 and connected to the transparent microperforated plate 41.

[0038] Preferably, the resonance frequency of the double-sided photovoltaic sound barrier module 4 is designed to be 200~300Hz, with an overall thickness of 80mm-200mm; the thickness of the transparent micro-perforated plate 41 is not less than 2mm, the perforation diameter does not exceed 1mm, and the perforation rate does not exceed 2%.

[0039] Preferably, the transparent microperforated plate 41 of the bifacial photovoltaic sound barrier module 4 is connected to the third metal sound insulation plate 44 and the metal keel 42 in two ways. The first is a plug-in connection, where the transparent microperforated plate 41 is inserted into the third metal sound insulation plate 44 to form a U-shaped groove 45. A sealing cap 46 of the same shape is placed on top, sealing the connection gap. The overall structure facilitates replacement of the transparent microperforated plate 41. The second is a rivet connection, where the transparent microperforated plate 41 is secured to the third metal sound insulation plate 44 and the metal keel 42 via rivets.

[0040] Preferably, the single-sided photovoltaic sound barrier module 2, the sound barrier interaction module 3, and the bifacial photovoltaic sound barrier module 4 are assembled in a modular fashion, stacked from bottom to top until they are flush with the tops of the steel columns, forming the photovoltaic sound barrier. The photovoltaic sound barrier absorbs all low-, medium-, and high-frequency noise in the 200Hz to 2000Hz range.

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that these are only some examples that the present invention may take, but are not intended to limit the scope of the present invention.

[0042] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides an integrated photovoltaic sound barrier including steel columns 1, a photovoltaic sound barrier screen body is arranged between the steel columns 1, and the photovoltaic sound barrier screen body is composed of a single-sided power generation photovoltaic sound barrier module 2, a sound barrier interaction module 3 and a double-sided power generation photovoltaic sound barrier module 4.

[0043] like Figure 3 As shown, the single-sided photovoltaic sound barrier module 2 includes a perforated metal panel 21, environmentally friendly sound-absorbing material 22, a single-sided photovoltaic module backsheet 23, and a first metal sound insulation panel 24. The perforated metal panel 21 is parallel to the single-sided photovoltaic module backsheet 23 and is fixedly connected to the first metal sound insulation panel 24 on all four sides. The perforated metal panel 21, the single-sided photovoltaic module backsheet 23, and the first metal sound insulation panel 24 enclose a first cavity 25, which is filled with environmentally friendly sound-absorbing material 22 to absorb mid- and high-frequency noise.

[0044] The environmentally friendly sound-absorbing material 22 is rectangular or wavy in shape, with the wavy shape being sinusoidal. Its horizontal projection length is approximately 0.85m to 1.14m, corresponding to a wavelength of 300Hz to 400Hz. A damping layer is applied to the back of the wavy material 22 (facing the sound receiving point). Polyester fiber is the preferred environmentally friendly sound-absorbing material, with rock wool and glass wool being other alternatives.

[0045] like Figure 4 As shown, the sound barrier interaction module 3 includes a transparent display screen 31, a transparent sound insulation panel 32, and a second metal sound insulation panel 34. The transparent display screen 31 is parallel to the transparent sound insulation panel 32, and its four sides are fixedly connected to the second metal sound insulation panel 34. The transparent display screen 31, the transparent sound insulation panel 32, and the second metal sound insulation panel 34 enclose a second cavity 35. The transparent sound insulation panel 32 is made of cadmium telluride power generation glass, acrylic, PC, or tempered glass. The transparent display screen 31 is an OLED, LED, or LCD, used for advertising, displaying traffic information, and achieving economic and social benefits.

[0046] like Figure 5As shown, the bifacial photovoltaic sound barrier module 4 comprises a transparent microperforated plate 41, a metal keel 42, a bifacial photovoltaic module backsheet 43, and a third metal sound insulation plate 44. The transparent microperforated plate 41 is parallel to the bifacial photovoltaic module backsheet 43. Together, they form a Helmholtz resonance cavity, absorbing low-frequency noise through resonance. The metal keel 42 is positioned within the Helmholtz resonance cavity, connecting the transparent microperforated plate 41 to the bifacial photovoltaic module backsheet 43.

[0047] The resonance absorption frequency of the double-sided photovoltaic sound barrier module 4 is designed to be 200~300Hz, with an overall thickness of 80mm-200mm; the thickness of the transparent micro-perforated plate 41 is not less than 2mm, the perforation diameter does not exceed 1mm, and the perforation rate does not exceed 2%.

[0048] like Figure 5 and Figure 6 As shown, the transparent micro-perforated plate 41 in the double-sided photovoltaic sound barrier module 4 is connected to the third metal sound insulation plate 44 and the metal keel 42 through an insert connection. The third metal sound insulation panel 44 includes a first panel 441, a second panel 442, and a first connecting portion located between the first panel 441 and the second panel 442. The first connecting portion includes a first groove 451 protruding from the first panel 441 toward the Helmholtz resonance cavity 47, a second groove 452 protruding from the second panel 442 toward the Helmholtz resonance cavity 47, and a third groove 453 connecting the first groove 451 and the second groove 452. The first groove 451, the second groove 452, and the third groove 453 form a U-shaped groove 45 (i.e., the first connecting portion is the U-shaped groove 45). The transparent microperforated plate 41 is inserted into the U-shaped groove, thereby connecting the transparent microperforated plate 41 and the third metal sound insulation panel 44. A sealing top cover 46 of the same shape is placed on the top, and the connecting gap is sealed. The overall structure facilitates replacement of the transparent microperforated plate 41. The bifacial photovoltaic module back plate 43 is fixedly connected to the first panel 441 and the second panel 442 of the third metal sound insulation board 44 .

[0049] like Figure 1 and Figure 2 As shown, the single-sided photovoltaic sound barrier module 2, the sound barrier interaction module 3 and the double-sided photovoltaic sound barrier module 4 are assembled in a modular prefabricated manner according to the requirements of the application scenario, and are stacked from bottom to top to a position flush with the top of the steel column 1 to form a photovoltaic sound barrier screen body, thereby achieving full-frequency absorption of low-frequency, medium-frequency and high-frequency noise within 200Hz~2000Hz.

[0050] Example 2 In the single-sided photovoltaic sound barrier module 2, when the incident sound wave θWhen the angular wavy environmentally friendly sound-absorbing material 22 is incident from the front (facing the sound source), if the wavelength of the incident sound wave The bending wave wavelength corresponding to the wavy environmentally friendly sound-absorbing material 22 satisfy When the incident sound wave acts on the wavy environmentally friendly sound-absorbing material 22, it coincides with the bending wave vibration of the wavy environmentally friendly sound-absorbing material 22. At this time, the bending vibration of the wavy environmentally friendly sound-absorbing material 22 reaches a maximum value. Under the action of the environmentally friendly sound-absorbing material and the back damping layer, the incident sound energy is absorbed. According to the above formula, the design absorbs 300Hz~400Hz sound energy. When the horizontal projection length is the corresponding wavelength (about 0.85m~1.14m), the bending vibration reaches a maximum value. The sound absorption effect of the single-sided photovoltaic sound barrier module 2 after simulation is as follows Figure 7 As shown. Figure 7 It can be seen that the sound absorption coefficient of incident sound energy at 300Hz~400Hz reaches above 0.9, and the sound absorption effect is good. However, it should be noted that the sound absorption coefficient of conventional sound barriers in this frequency band is generally around 0.8.

[0051] Example 3 The resonant absorption frequency of the double-sided photovoltaic sound barrier module 4 can be calculated according to the following formula:

[0052] Where, c is the speed of sound, generally 340m / s, S is the opening area of ​​the pore neck (m 2 ), V is the volume of the Helmholtz resonance cavity (m 3 ), t is the hole neck depth (m), d is the hole diameter (m). According to the formula, the resonance absorption frequency of the double-sided photovoltaic sound barrier module 4 is designed to be 200 Hz, the overall thickness is 200 mm, the transparent micro-perforated plate is 2.5 mm thick, the perforation diameter is 1 mm, and the perforation rate is 0.75%.

[0053] The test results of the structural parameters in the acoustic laboratory are as follows:

[0054] Test results show that the bifacial photovoltaic sound barrier module 4 achieves a sound absorption coefficient of 0.9 at a low frequency of 200Hz. Conventional sound barriers have poor noise reduction effects at low frequencies, particularly below 300Hz, where the absorption coefficient is often below 0.6. The bifacial photovoltaic sound barrier module 4 of the present application improves the sound absorption coefficient at low frequencies (200Hz) by at least 50% compared to conventional sound barriers, demonstrating excellent low-frequency noise reduction while maintaining bifacial power generation capabilities.

[0055] It should be noted that in this patent application, relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another, and do not necessarily require or imply any actual relationship or order between these entities or operations. Furthermore, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, an element specified by the phrase "comprising a" does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element. In this patent application, reference to performing an action in accordance with an element means performing the action in accordance with at least that element, including two situations: performing the action in accordance with that element alone, and performing the action in accordance with that element and other elements. Expressions such as "plurality," "multiple times," and "many" include "two," "twice," "two kinds," and "more than two," "more than two times," and "more than two kinds."

[0056] All documents mentioned in this application are considered to be included in their entirety in the disclosure of this application so that they can be used as a basis for modification when necessary. In addition, it should be understood that after reading the above disclosure of this application, those skilled in the art may make various changes or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. An integrated photovoltaic sound barrier, characterized in that: The invention comprises a single-sided photovoltaic sound barrier module (2), a sound barrier interaction module (3) and a double-sided photovoltaic sound barrier module (4), wherein the single-sided photovoltaic sound barrier module (2) comprises a metal perforated panel (21), an environmentally friendly sound absorbing material (22), a single-sided photovoltaic module back plate (23) and a first metal sound insulation board (24); the metal perforated panel (21) and the single-sided photovoltaic module back plate (23) are arranged relative to each other; the metal perforated panel (21), the single-sided photovoltaic module back plate (23) and the first metal sound insulation board (24) are enclosed to form a first cavity (25); the first cavity (25) is filled with the environmentally friendly sound absorbing material; the overall shape of the environmentally friendly sound absorbing material (22) is sinusoidal; the projected length of the environmentally friendly sound absorbing material (22) in the longitudinal direction of the metal perforated panel (21) is 300Hz-400Hz, corresponding to a wavelength of 0.85m-1.14m; The sound barrier interaction module (3) includes a transparent display screen (31), a transparent sound insulation board (32) and a second metal sound insulation board (34), wherein the transparent display screen (31) and the transparent sound insulation board (32) are arranged relative to each other, and the transparent display screen (31), the transparent sound insulation board (32) and the second metal sound insulation board (34) enclose a second cavity (35), and the transparent display screen (31) serves as an intelligent interaction interface and is directly powered by the electric energy generated by the single-sided power generation photovoltaic sound barrier module (2) and the double-sided power generation photovoltaic sound barrier module (4); The double-sided photovoltaic sound barrier module (4) is configured to generate electricity using double-sided photovoltaic modules and mainly absorb low-frequency noise with a frequency of 200 Hz-300 Hz; The single-sided power generation photovoltaic sound barrier module (2), the sound barrier interaction module (3), and the double-sided power generation photovoltaic sound barrier module (4) are constructed to be stacked up and down to form a photovoltaic sound barrier screen body, and can effectively absorb full-frequency noise within the range of 200Hz to 2000Hz.

2. The photovoltaic sound barrier according to claim 1, characterized in that: The width of the environmentally friendly sound-absorbing material in the direction from the metal perforated panel (21) to the single-sided photovoltaic assembly back plate (23) is between 0.1m and 0.3m.

3. The photovoltaic sound barrier according to claim 1, characterized in that: The single-sided photovoltaic sound barrier module (2) is configured to mainly absorb medium and high frequency noise with a frequency of 300 Hz-2000 Hz, wherein the sound absorption coefficient in the frequency band of 300 Hz-400 Hz can reach above 0.

9.

4. The photovoltaic sound barrier according to claim 1, characterized in that: A damping layer is provided on the back of the environmentally friendly sound-absorbing material, where the back refers to a side opposite to the front side of the environmentally friendly sound-absorbing material facing the sound source.

5. The photovoltaic sound barrier according to claim 1, characterized in that: The double-sided photovoltaic sound barrier module comprises a transparent micro-perforated plate (41), a double-sided photovoltaic assembly back plate (43) and a third metal sound insulation plate (44); the transparent micro-perforated plate (41) and the double-sided photovoltaic assembly back plate (43) are arranged parallel to and opposite to each other; the transparent micro-perforated plate (41), the double-sided photovoltaic assembly back plate (43) and the third metal sound insulation plate (44) enclose a Helmholtz resonance cavity (47).

6. The photovoltaic sound barrier according to claim 5, characterized in that: The third metal sound insulation board (44) includes a first panel (441), a second panel (442), and a first connecting portion located between the first panel (441) and the second panel (442), wherein the first connecting portion includes a first groove (451) protruding from the first panel (441) toward the Helmholtz resonance cavity (47), a second groove (452) protruding from the second panel (442) toward the Helmholtz resonance cavity (47), and a third groove (453) connecting the first groove (451) and the second groove (452), wherein the first groove (451), the second groove (452), and the third groove (453) constitute a U-shaped groove (45), and the transparent micro-perforated plate (41) is configured to be inserted into the U-shaped groove, thereby connecting the transparent micro-perforated plate (41) and the third metal sound insulation board (44) together.

7. The photovoltaic sound barrier according to claim 6, characterized in that: The double-sided photovoltaic sound barrier module further includes a metal keel (42), which is located in the Helmholtz resonance cavity (47) and is used to support the transparent micro-perforated plate (41) and the double-sided photovoltaic assembly back plate (43).

8. The photovoltaic sound barrier according to claim 7, characterized in that: The overall thickness of the double-sided photovoltaic sound barrier module is 80 mm to 200 mm, the thickness of the transparent micro-perforated plate (41) is not less than 2 mm, the perforation diameter is not more than 1 mm, and the perforation rate is not more than 2%.

9. The photovoltaic sound barrier according to claim 1, characterized in that: The transparent sound insulation board (32) is made of cadmium telluride power generation glass, acrylic, PC or tempered glass, the transparent display screen (31) is OLED, LED or LCD, and the smart interactive interface is configured to perform at least one of the following functions: (a) dynamic advertising information delivery, (b) real-time traffic data visualization display and (c) environmental noise intensity monitoring and feedback.

10. The photovoltaic sound barrier according to claim 1, characterized in that: The integrated photovoltaic sound barrier is stacked with a single-sided power generation photovoltaic sound barrier module (2), a sound barrier interaction module (3), and a double-sided power generation photovoltaic sound barrier module (4) in sequence from bottom to top. The integrated photovoltaic sound barrier also includes columns, and the single-sided power generation photovoltaic sound barrier module (2), the sound barrier interaction module (3), and the double-sided power generation photovoltaic sound barrier module (4) are arranged between the columns.

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