Integrated photovoltaic sound barrier

Abstract

The application discloses an integrated photovoltaic sound barrier, which comprises 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 structures of the three modules are configured to be stacked together to form a photovoltaic sound barrier screen body, so that full-frequency noise in the range of 200Hz-2000Hz can be effectively absorbed. The photovoltaic sound barrier integrates the photovoltaic power generation function and the sound absorption and insulation noise reduction function, and through modular design and stacking assembly, the use area and power generation efficiency of the photovoltaic component are effectively improved, the sound absorption frequency band is widened, and the noise reduction effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power generation and sound barrier applications, and particularly relates to an integrated photovoltaic sound barrier. BACKGROUND

[0002] The photovoltaic sound barrier (PVNB) is a new green energy environmental protection facility that combines solar power generation and noise reduction functions. It changes the original infrastructure into a comprehensive energy facility through multiple technical means such as sound absorption and insulation and power generation, achieving the effects of reducing environmental noise pollution, increasing clean power generation, and reducing carbon emissions. As one of the distributed photovoltaic technologies with great potential that can be applied in urban trunk areas, the photovoltaic sound barrier will play an important role in solving the energy supply pressure of urban center traffic arteries due to its long distribution mileage and superior geographical location, and has great research value.

[0003] Although significant progress has been made in the research of photovoltaic sound barriers, there are still some challenges in terms of technology and application. For example, in existing engineering applications, photovoltaic sound barriers are mostly designed as a whole, with photovoltaic components directly serving as sound barriers or with photovoltaic components and traditional sound barriers arranged separately (i.e., split design). This design has the problems of small photovoltaic use area, poor sound absorption performance (the main frequency range of traffic noise is 200Hz~2000Hz, and existing sound absorption materials cannot completely cover this frequency range, especially the low frequency below 400Hz), and insufficient overall power generation efficiency and noise reduction effect. Therefore, it is necessary to study an integrated photovoltaic sound barrier that integrates photovoltaic power generation and sound absorption and noise reduction functions, further improve the power generation efficiency and noise reduction effect of the photovoltaic sound barrier, and consider the environmental friendliness and structural stability of the material. SUMMARY

[0004] The present application aims to provide an integrated photovoltaic sound barrier that integrates photovoltaic power generation and sound absorption and insulation noise reduction functions, and effectively improves the use area and power generation efficiency of photovoltaic components through modular design to achieve full-band noise reduction technology effects within 200Hz~2000Hz.

[0005] The present application provides an integrated photovoltaic sound barrier, which comprises 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,

[0006] The single-sided power generation photovoltaic sound barrier module comprises a metal perforated panel, an environmentally friendly sound-absorbing material, a single-sided power generation photovoltaic component backboard and a first metal sound insulation plate, the metal perforated panel and the single-sided power generation photovoltaic component backboard are oppositely arranged, the metal perforated panel, the single-sided power generation photovoltaic component backboard and the first metal sound insulation plate form 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 a sine shape, and the projection length of the environmentally friendly sound-absorbing material in the length direction of the metal perforated panel is 0.85 m-1.14 m corresponding to the wavelength of 300 Hz-400 Hz.

[0007] The sound barrier interaction module comprises a transparent display screen, a transparent sound insulation plate and a second metal sound insulation plate, the transparent display screen and the transparent sound insulation plate are oppositely arranged, the transparent display screen, the transparent sound insulation plate and the second metal sound insulation plate form a second cavity, the transparent display screen serves as a smart interaction interface and is directly powered by the electricity generated by the single-sided power generation photovoltaic sound barrier module and the double-sided power generation photovoltaic sound barrier module.

[0008] The double-sided power generation photovoltaic sound barrier module is configured to generate electricity by using a double-sided photovoltaic component and mainly absorb low-frequency noise with a frequency of 200 Hz-300 Hz.

[0009] 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 stacked together to form a photovoltaic sound barrier screen body, which can effectively absorb full-frequency noise in the range of 200 Hz-2000 Hz.

[0010] In another preferred example, the number of the single-sided power generation photovoltaic sound barrier modules is one or more, the number of the sound barrier interaction modules is one or more, and the number of the double-sided power generation photovoltaic sound barrier modules is one or more, and each module can be freely stacked according to the requirements of the application scene.

[0011] In another preferred example, the width of the environmentally friendly sound-absorbing material in the single-sided power generation photovoltaic sound barrier module along the direction from the metal perforated panel to the single-sided power generation photovoltaic component backboard is between 0.1 m and 0.3 m.

[0012] In another preferred example, the width of the environmentally friendly sound-absorbing material in the single-sided power generation photovoltaic sound barrier module along the width direction of the first cavity is between 0.1 m and 0.3 m.

[0013] In another preferred example, the environmentally friendly sound-absorbing material is polyester fiber.

[0014] In another preferred embodiment, the single-sided power-generating photovoltaic sound barrier module is configured to absorb medium-high frequency noise with a frequency of 300-2000 Hz, wherein the sound absorption coefficient in the frequency band of 300-400 Hz is up to 0.9 or more.

[0015] In another preferred embodiment, the back of the environmentally friendly sound absorption material is provided with a damping layer, wherein the back refers to the side opposite to the front side of the environmentally friendly sound absorption material facing the sound source.

[0016] In another preferred embodiment, the double-sided power-generating photovoltaic sound barrier module comprises a transparent micro-perforated panel, a double-sided power-generating photovoltaic module back plate, and a third metal sound insulation panel, wherein the transparent micro-perforated panel is arranged in parallel and opposite to the double-sided power-generating photovoltaic module back plate, and the transparent micro-perforated panel, the double-sided power-generating photovoltaic module back plate, and the third metal sound insulation panel form a Helmholtz resonance cavity.

[0017] In another preferred embodiment, the third metal sound insulation panel comprises a first panel, a second panel, and a first connecting portion between the first panel and the second panel, wherein the first connecting portion comprises a first groove protruding from the first panel towards the Helmholtz resonance cavity, a second groove protruding from the second panel towards the Helmholtz resonance cavity, and a third groove connecting the first groove and the second groove, and the first groove, the second groove, and the third groove form a N-shaped groove, and the transparent micro-perforated panel is configured to be inserted into the N-shaped groove, thereby connecting the transparent micro-perforated panel and the third metal sound insulation panel together.

[0018] In another preferred embodiment, the double-sided power-generating photovoltaic sound barrier module further comprises a metal keel, wherein the metal keel is located in the Helmholtz resonance cavity and is used to support the transparent micro-perforated panel and the double-sided power-generating photovoltaic module back plate.

[0019] In another preferred embodiment, the double-sided power-generating photovoltaic module back plate is fixedly connected with the first panel and the second panel of the third metal sound insulation panel.

[0020] In another preferred embodiment, the metal keel is parallel to the first panel and the second panel.

[0021] In another preferred embodiment, the metal keel is fixedly connected to the third groove.

[0022] In another preferred embodiment, the total thickness of the double-sided power-generating photovoltaic sound barrier module is 80-200 mm, the thickness of the transparent micro-perforated panel is not less than 2 mm, the perforation diameter is not more than 1 mm, and the perforation rate is not more than 2%.

[0023] In another preferred embodiment, the transparent soundproofing panel is made of cadmium telluride power glass, acrylic, PC or tempered glass, the transparent display screen is OLED, LED or LCD, and the smart interaction 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.

[0024] In another preferred embodiment, the integrated photovoltaic sound barrier has, from bottom to top, a single-sided power generation photovoltaic sound barrier module, a sound barrier interaction module, and a double-sided power generation photovoltaic sound barrier module stacked in sequence, and further comprises upright columns, the single-sided power generation photovoltaic sound barrier module, the sound barrier interaction module, and the double-sided power generation photovoltaic sound barrier module being arranged between the upright columns, and each module can be freely stacked according to the requirements of the application scenario.

[0025] The present application has at least one of the following advantages:

[0026] (a) The present application integrates the photovoltaic power generation function and the sound absorption and noise reduction function of the photovoltaic sound barrier, effectively improves the use area, power generation efficiency and overall noise reduction effect of the photovoltaic module through modular design, and can realize free on-site assembly according to the requirements of the application scenario;

[0027] (b) The single-sided power generation photovoltaic sound barrier module in the present application can effectively absorb medium and high frequency noise (300Hz~2000Hz), and the double-sided power generation photovoltaic sound barrier module can effectively absorb low frequency noise (200Hz~300Hz), and in the range of 200Hz~2000Hz which is the main frequency band of traffic noise, good noise reduction effect can be achieved;

[0028] (c) The environmentally friendly sound absorption material in the single-sided power generation photovoltaic sound barrier module is designed in a wave shape, and the frequency of the bending vibration when the incident sound wave and the sound absorption material produce the matching effect is designed to be 300Hz~400Hz, further improving the absorption effect of medium frequency sound energy;

[0029] (d) The transparent display screen in the transparent sound barrier module (sound barrier interaction module) is provided as a smart interaction interface for advertising and traffic information data display, which produces additional economic benefits while effectively improving the urban landscape image, i.e., the sound barrier interaction module is used to improve the soundproofing effect of the barrier and functions as a smart interaction;

[0030] (e) The transparent micro-perforated plate in the double-sided power generation photovoltaic sound barrier module is designed in an insertion type connection with other components, which is different from the traditional fixed type connection, and this way facilitates the replacement of the plate at any time.

[0031] It should be understood that, in the scope of the present application, the above technical features of the present application and the technical features specifically described in the following (such as the examples) can be combined with each other to form new or preferred technical solutions. Due to the limited space, they will not be listed one by one here. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. It should be understood that the drawings described below are only some of the embodiments of the present application, and those skilled in the art can also obtain other embodiments from these drawings without creative labor.

[0033] Figure 1 is a front view of an integrated photovoltaic sound barrier structure according to an embodiment of the present application;

[0034] Figure 2 is a back view of an integrated photovoltaic sound barrier structure according to an embodiment of the present application;

[0035] Figure 3 is a top view of a single-sided power generation photovoltaic sound barrier module structure of an integrated photovoltaic sound barrier according to an embodiment of the present application;

[0036] Figure 4 is a top view of a sound barrier interaction module structure of an integrated photovoltaic sound barrier according to an embodiment of the present application;

[0037] Figure 5 is a top view of a double-sided power generation photovoltaic sound barrier module structure of an integrated photovoltaic sound barrier according to an embodiment of the present application;

[0038] Figure 6 is a structure diagram of a structure formed by a third metal sound insulation plate in a double-sided power generation photovoltaic sound barrier module of an integrated photovoltaic sound barrier according to an embodiment of the present application, and the cross section of the structure is a U-shaped groove;

[0039] Figure 7 is a simulation result of the sound absorption coefficient and the sound absorption frequency of the sound absorption structure of a single-sided power generation photovoltaic sound barrier module according to an embodiment of the present application.

[0040] In each drawing, the following marks are used

[0041] 1-steel stand

[0042] 2-single-sided power generation photovoltaic sound barrier module

[0043] 21-metal perforated panel

[0044] 22-environment-friendly sound absorption material

[0045] 23- single-sided power-generating photovoltaic module backsheet

[0046] 24- first metal baffle

[0047] 25- first cavity

[0048] 3- sound barrier interaction module

[0049] 31- transparent display screen

[0050] 32- transparent baffle

[0051] 34- second metal baffle

[0052] 35- second cavity

[0053] 4- double-sided power-generating photovoltaic sound barrier module

[0054] 41- transparent micro-perforated panel

[0055] 42- metal furring

[0056] 43- double-sided power-generating photovoltaic module backsheet

[0057] 44- third metal baffle

[0058] 45- U-shaped groove

[0059] 46- sealing top cover

[0060] 47- horn-helmholtz resonator

[0061] 441- first panel

[0062] 442- second panel

[0063] 451- first groove

[0064] 452- second groove

[0065] 453- third groove DETAILED DESCRIPTION

[0066] The inventor, through extensive and in-depth research, has for the first time developed an integrated photovoltaic sound barrier, which effectively improves the photovoltaic component area and power generation efficiency of the photovoltaic sound barrier, the full-frequency sound absorption performance within 200Hz~2000Hz, and solves the problems of insufficient overall power generation efficiency and noise reduction effect. At the same time, by modularizing the photovoltaic sound barrier, according to the needs of the application scene, the photovoltaic sound barrier is realized on-site "building block" matching and assembly, which is flexible and simple. For example, the photovoltaic sound barrier of the present application is suitable for urban traffic, highways and railways, power plants, converter stations, substations and other industrial enterprises and other environments with noise reduction needs.

[0067] The integrated photovoltaic sound barrier of the present application comprises steel columns and photovoltaic sound barrier screens between the steel columns. The photovoltaic sound barrier screens are composed of single-sided power generation photovoltaic sound barrier modules, transparent sound barrier modules, and double-sided power generation photovoltaic sound barrier modules stacked from bottom to top to the position flush with the top of the steel columns. The present application integrates the photovoltaic power generation function and the sound absorption and noise reduction function of the photovoltaic sound barrier. Through modular design and stacking assembly, the use area and power generation efficiency of the photovoltaic components are effectively improved, the sound absorption frequency band is widened, and the noise reduction effect is improved.

[0068] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one of ordinary skill in the art that the present application can be practiced without these specific details and that numerous implementation variations and modifications can be possible.

[0069] Terminology

[0070] As used herein, the term "sound barrier interaction module" is used interchangeably with "transparent sound barrier module";

[0071] In the present application, all directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, motion condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0072] Integrated photovoltaic sound barrier

[0073] The present application provides an integrated photovoltaic sound barrier. By integrating photovoltaic components and sound absorption and noise reduction structures, the use area and power generation efficiency of the photovoltaic components of the photovoltaic sound barrier, and the full-frequency sound absorption performance within 200Hz-2000Hz are effectively improved, solving the problems of insufficient overall power generation efficiency and noise reduction effect. At the same time, by modularizing the photovoltaic sound barrier, the photovoltaic sound barrier can be assembled in a "building block" manner according to the requirements of the application scene, which is flexible and simple.

[0074] In an embodiment, the integrated photovoltaic sound barrier provided by the present application comprises steel columns 1, and photovoltaic sound barrier screens are arranged between the steel columns 1. The photovoltaic sound barrier screens are composed of single-sided power generation photovoltaic sound barrier modules 2, sound barrier interaction modules 3, and double-sided power generation photovoltaic sound barrier modules 4. Each module is assembled in a free manner according to the requirements of the application scene, and is stacked from bottom to top to the position flush with the top of the steel columns.

[0075] Preferably, the single-sided power generation photovoltaic sound barrier module 2 comprises a metal perforated panel 21, an environmentally friendly sound-absorbing material 22, a single-sided power generation photovoltaic module backboard 23, and a first metal sound insulation plate 24. The metal perforated panel 21 is parallel to the single-sided power generation photovoltaic module backboard 23 and is fixedly connected to the first metal sound insulation plate 24 on four sides, respectively. The metal perforated panel 21, the single-sided power generation photovoltaic module backboard 23, and the first metal sound insulation plate 24 form a first cavity 25, which is filled with environmentally friendly sound-absorbing material to absorb medium and high frequency noise.

[0076] Preferably, the environmentally friendly sound-absorbing material 22 is in a wave shape. The wave shape is sinusoidal, and the horizontal projection length is 300Hz~400Hz corresponding to the wavelength, about 0.85m~1.14m. The back of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound receiving point side) is attached with a damping layer. When the incident sound wave is incident on the front of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound source side), if the wavelength of the incident sound wave θ corresponds to the wavelength of the wave-shaped environmentally friendly sound-absorbing material 22, the wave-shaped environmentally friendly sound-absorbing material 22 is in a wave shape. The wave shape is sinusoidal, and the horizontal projection length is 300Hz~400Hz corresponding to the wavelength, about 0.85m~1.14m. The back of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound receiving point side) is attached with a damping layer. When the incident sound wave is incident on the front of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound source side), if the wavelength of the incident sound wave corresponds to the wavelength of the wave-shaped environmentally friendly sound-absorbing material 22, the wave-shaped environmentally friendly sound-absorbing material 22 is in a wave shape. The wave shape is sinusoidal, and the horizontal projection length is 300Hz~400Hz corresponding to the wavelength, about 0.85m~1.14m. The back of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound receiving point side) is attached with a damping layer. When the incident sound wave is incident on the front of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound source side), if the wavelength of the incident sound wave corresponds to the wavelength of the wave-shaped environmentally friendly sound-absorbing material 22, the wave-shaped environmentally friendly sound-absorbing material 22 is in a wave shape. The wave shape is sinusoidal, and the horizontal projection length is 300Hz~400Hz corresponding to the wavelength, about 0.85m~1.14m. The back of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound receiving point side) is attached with a damping layer. When the incident sound wave is incident on the front of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound source side), if the wavelength of the incident sound wave corresponds to the wavelength of the wave-shaped environmentally friendly sound-absorbing material 22, the wave-shaped environmentally friendly sound-absorbing material 22 is in a wave shape. The wave shape is sinusoidal, and the horizontal projection length is 300Hz~400Hz corresponding to the wavelength, about 0.85m~1.14m. The back of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound receiving point side) is attached with a damping layer. When the incident sound wave is incident on the front of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound source side), if the wavelength of the incident sound wave

[0077] Preferably, the environmentally friendly sound-absorbing material 22 is polyester fiber, and then rock wool and glass wool are considered.

[0078] Preferably, the sound barrier interaction module 3 comprises a transparent display screen 31, a transparent sound insulation plate 32, and a second metal sound insulation plate 34. The transparent display screen 31 is parallel to the transparent sound insulation plate 32 and is fixedly connected to the second metal sound insulation plate 34 on four sides, respectively. The transparent display screen 31, the transparent sound insulation plate 32, and the second metal sound insulation plate 34 form a second cavity 35. The material of the transparent sound insulation plate 32 is cadmium telluride power generation glass, acrylic, PC, or tempered glass, and the transparent display screen 31 is OLED, LED, or LCD.

[0079] Preferably, the transparent display screen 31 is directly powered by green electricity generated by photovoltaic, used for advertising and traffic data display, realizing on-site consumption of photovoltaic power generation and generating certain economic benefits.

[0080] Preferably, the double-sided power generation photovoltaic sound barrier module 4 comprises a transparent micro-perforated plate 41, a metal furring 42, a double-sided power generation photovoltaic component back plate 43 and a third metal sound insulation plate 44. The transparent micro-perforated plate 41 is parallel to the double-sided power generation photovoltaic component back plate 43. Preferably, the double-sided power generation photovoltaic component back plate 43 is fixedly connected with the third metal sound insulation plate 44, and the transparent micro-perforated plate 41, the double-sided power generation photovoltaic component back plate 43 and the third metal sound insulation plate 44 together form a Helmholtz resonance cavity 47 to absorb low-frequency noise. The metal furring 42 is arranged in the Helmholtz resonance cavity 47 and connected with the transparent micro-perforated plate 41.

[0081] Preferably, the resonance frequency of the double-sided power generation photovoltaic sound barrier module 4 is designed to be 200-300 Hz, and the overall thickness is 80-200 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%.

[0082] Preferably, the transparent micro-perforated plate 41 of the double-sided power generation photovoltaic sound barrier module 4 is connected with the third metal sound insulation plate 44 and the metal furring 42 in two forms. The first form is an insertion connection, the transparent micro-perforated plate 41 is inserted into the V-shaped groove 45 formed by the third metal sound insulation plate 44, a sealing top cover 46 of the same shape is covered on the top, the connection gap is sealed, and the overall structure is convenient for replacement of the transparent micro-perforated plate 41. The second form is a rivet connection, the transparent micro-perforated plate 41 is fixed with the third metal sound insulation plate 44 and the metal furring 42 through rivets.

[0083] Preferably, 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 assembled in a modular assembly manner according to the application scene requirements, and are stacked from bottom to top to the position flush with the top of the steel column to form a photovoltaic sound barrier screen body. The photovoltaic sound barrier realizes full-frequency absorption of low-frequency, medium-frequency and high-frequency noise within 200-2000 Hz.

[0084] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings. It should be understood that these are only some examples that the present application can take, but are not intended to limit the scope of the present application.

[0085] Embodiment 1

[0086] As shown in Figure 1 and Figure 2 , the present embodiment provides an integrated photovoltaic sound barrier comprising a steel column 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.

[0087] As shown in Figure 3As shown, the single-sided power generation photovoltaic sound barrier module 2 includes a metal perforated panel 21, an environmentally friendly sound-absorbing material 22, a single-sided power generation photovoltaic module back plate 23, and a first metal sound insulation plate 24. The metal perforated panel 21 is parallel to the single-sided power generation photovoltaic module back plate 23 and is fixedly connected to the first metal sound insulation plate 24 on four sides, respectively. The metal perforated panel 21, the single-sided power generation photovoltaic module back plate 23, and the first metal sound insulation plate 24 form a first cavity 25, and the first cavity 25 is filled with the environmentally friendly sound-absorbing material 22 to absorb medium and high frequency noise.

[0088] The environmentally friendly sound-absorbing material 22 is in the shape of a rectangle or a wave, wherein the wave is a sine wave, the horizontal projection length is about 0.85m-1.14m corresponding to the wavelength of 300Hz-400Hz, and a damping layer is attached to the back of the wave-shaped environmentally friendly sound-absorbing material 22 (facing the sound receiving point side). The environmentally friendly sound-absorbing material is polyester fiber, and rock wool and glass wool are considered secondly.

[0089] As shown in Figure 4 The sound barrier interaction module 3 includes a transparent display screen 31, a transparent sound insulation plate 32, and a second metal sound insulation plate 34. The transparent display screen 31 is parallel to the transparent sound insulation plate 32 and is fixedly connected to the second metal sound insulation plate 34 on four sides, respectively. The transparent display screen 31, the transparent sound insulation plate 32, and the second metal sound insulation plate 34 form a second cavity 35. The transparent sound insulation plate 32 is made of cadmium telluride power generation glass, acrylic, PC, or tempered glass, and the transparent display screen 31 is OLED, LED, or LCD, which is used for advertising and data display of traffic information to achieve economic and social benefits.

[0090] As shown in Figure 5 The double-sided power generation photovoltaic sound barrier module 4 includes a transparent micro-perforated panel 41, a metal keel 42, a double-sided power generation photovoltaic module back plate 43, and a third metal sound insulation plate 44. The transparent micro-perforated panel 41 is parallel to the double-sided power generation photovoltaic module back plate 43, and the transparent micro-perforated panel 41, the double-sided power generation photovoltaic module back plate 43, and the third metal sound insulation plate 44 form a Helmholtz resonance cavity, which absorbs low-frequency noise through resonance. The metal keel 42 is placed in the Helmholtz resonance cavity, and the transparent micro-perforated panel 41 and the double-sided power generation photovoltaic module back plate 43 are connected.

[0091] The resonance absorption frequency of the double-sided power generation photovoltaic sound barrier module 4 is designed to be 200-300Hz, and the overall thickness is 80mm-200mm; the thickness of the transparent micro-perforated panel 41 is not less than 2mm, the perforation diameter is not more than 1mm, and the perforation rate is not more than 2%.

[0092] As shown in Figure 5 and Figure 6As 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 resonant cavity 47, a second groove 452 protruding from the second panel 442 toward the Helmholtz resonant 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). A transparent micro-perforated plate 41 is inserted into the U-shaped groove, thereby connecting the transparent micro-perforated plate 41 to the third metal sound insulation panel 44. A sealing top cover 46 of the same shape is placed on top, and the connection gap is sealed. The overall structure facilitates the replacement of the transparent micro-perforated plate 41. The back panel 43 of the bifacial photovoltaic module is fixedly connected to the first panel 441 and the second panel 442 of the third metal sound insulation plate 44.

[0093] 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 assembly manner according to the application scenario requirements. They are stacked from bottom to top to the position flush with the top of the steel column 1 to form a photovoltaic sound barrier screen, which can achieve full-frequency absorption of low-frequency, mid-frequency and high-frequency noise in the range of 200Hz to 2000Hz.

[0094] Example 2

[0095] In the single-sided photovoltaic sound barrier module 2, when the incident sound wave... θ When the angular wave-shaped environmentally friendly sound-absorbing material 22 is incident on the front (facing the sound source), if the wavelength of the incident sound wave is... The flexural wavelength corresponding to the wave-shaped environmentally friendly sound-absorbing material 22 satisfy At this point, the effect of the incident sound wave on the wave-shaped environmentally friendly sound-absorbing material 22 coincides with the bending wave vibration of the wave-shaped environmentally friendly sound-absorbing material 22. At this time, the bending vibration of the wave-shaped environmentally friendly sound-absorbing material 22 reaches its 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, to absorb 300Hz~400Hz sound energy, the bending vibration reaches its maximum value when the horizontal projection length is the corresponding wavelength (approximately 0.85m~1.14m). The sound absorption effect of the single-sided photovoltaic sound barrier module 2 after simulation is as follows: Figure 7 As shown. By Figure 7It can be seen that the sound absorption coefficient of the incident sound energy is above 0.9 at 300Hz-400Hz, and the sound absorption effect is good. However, it should be noted that the sound absorption coefficient of a conventional sound barrier in this frequency band is generally about 0.8.

[0096] Example 3

[0097] The resonance absorption frequency of the double-sided power generation photovoltaic sound barrier module 4 can be calculated according to the following formula:

[0098]

[0099] In the formula, c is the sound speed, generally taken as 340m / s, S is the opening area of the hole neck (m 2 ), V is the volume of the Helmholtz resonance cavity (m 3 ), t is the depth of the hole neck (m), d is the hole diameter (m). According to the formula, the resonance absorption frequency of the double-sided power generation photovoltaic sound barrier module 4 is designed to be 200Hz, the overall thickness is 200mm, the transparent micro-perforated plate is 2.5mm thick, the perforation diameter is 1mm, and the perforation rate is 0.75%.

[0100] The test results of this structural parameter in an acoustic laboratory are as follows:

[0101]

[0102] As can be seen from the test results, the sound absorption coefficient of the double-sided power generation photovoltaic sound barrier module 4 is 0.9 at low frequency 200Hz, while the noise reduction effect of a conventional sound barrier in the low frequency band is not good, especially the sound absorption coefficient in the low frequency band below 300Hz is usually less than 0.6. The sound absorption coefficient of the double-sided power generation photovoltaic sound barrier module 4 of the present application is at least 50% higher than that of a conventional sound barrier at low frequency (200Hz), and has good low frequency noise reduction effect, while also taking into account the double-sided power generation function.

[0103] It should be noted that in this patent application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to an element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

[0104] All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they can serve as a basis for modifications if necessary. Furthermore, it should be understood that after reading the foregoing disclosure of this application, those skilled in the art can make various alterations 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 by, 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 included, wherein the single-sided power generation photovoltaic sound barrier module (2) includes a metal perforated panel (21), an environmentally friendly sound-absorbing material (22), a single-sided power generation photovoltaic component backboard (23) and a first metal sound insulation plate (24), the metal perforated panel (21) and the single-sided power generation photovoltaic component backboard (23) are oppositely arranged, the metal perforated panel (21), the single-sided power generation photovoltaic component backboard (23) and the first metal sound insulation plate (24) 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 projection length of the environmentally friendly sound-absorbing material (22) in the length direction of the metal perforated panel (21) is 0.85m-1.14m corresponding to the wavelength of 300Hz-400Hz; The sound barrier interaction module (3) includes a transparent display screen (31), a transparent sound insulation plate (32) and a second metal sound insulation plate (34), the transparent display screen (31) and the transparent sound insulation plate (32) are oppositely arranged, the transparent display screen (31), the transparent sound insulation plate (32) and the second metal sound insulation plate (34) form a second cavity (35), the transparent display screen (31) is used as a smart interaction interface and is directly powered by the electricity 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 power generation photovoltaic sound barrier module (4) is configured to generate electricity by using a double-sided photovoltaic component and mainly absorb low-frequency noise with a frequency of 200Hz-300Hz; The structures of 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 stacked together to form a photovoltaic sound barrier screen body, and can effectively absorb full-frequency noise in the range of 200Hz-2000Hz.

2. The photovoltaic sound barrier of claim 1, wherein, The width of the environmentally friendly sound-absorbing material in the direction from the metal perforated panel (21) to the single-sided power generation photovoltaic component backboard (23) is between 0.1m and 0.3m.

3. The photovoltaic sound barrier of claim 1, wherein, The single-sided power generation photovoltaic sound barrier module (2) is configured to mainly absorb medium-high frequency noise with a frequency of 300Hz-2000Hz, and the sound absorption coefficient in the frequency range of 300Hz-400Hz can reach more than 0.

9.

4. The photovoltaic sound barrier of claim 1, wherein, A damping layer is arranged 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.

5. The photovoltaic sound barrier of claim 1, wherein, The double-sided power generation photovoltaic sound barrier module includes a transparent micro-perforated panel (41), a double-sided power generation photovoltaic component backboard (43) and a third metal sound insulation plate (44), the transparent micro-perforated panel (41) and the double-sided power generation photovoltaic component backboard (43) are arranged in parallel and opposite to each other, and the transparent micro-perforated panel (41), the double-sided power generation photovoltaic component backboard (43) and the third metal sound insulation plate (44) form a Helmholtz resonance cavity (47).

6. The photovoltaic sound barrier of claim 5, wherein, The third metal sound insulation panel (44) comprises a first panel (441), a second panel (442), and a first connecting portion between the first panel (441) and the second panel (442), the first connecting portion comprises a first groove (451) protruding from the first panel (441) towards the Helmholtz resonance cavity (47), a second groove (452) protruding from the second panel (442) towards the Helmholtz resonance cavity (47), 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 N-shaped groove (45), the transparent micro-perforated panel (41) is configured to be inserted into the N-shaped groove, thereby connecting the transparent micro-perforated panel (41) and the third metal sound insulation panel (44) together.

7. The photovoltaic sound barrier of claim 6, wherein, The double-sided power generation photovoltaic sound barrier module further comprises a metal furring (42) located in the Helmholtz resonance cavity (47) and used for supporting the transparent micro-perforated panel (41) and the double-sided power generation photovoltaic component back panel (43).

8. The photovoltaic sound barrier of claim 7, wherein, The overall thickness of the double-sided power generation photovoltaic sound barrier module is 80mm-200mm, the panel thickness of the transparent micro-perforated panel (41) is not less than 2mm, the perforation aperture is not more than 1mm, and the perforation rate is not more than 2%.

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

10. The photovoltaic sound barrier of claim 1, wherein, The integrated photovoltaic sound barrier sequentially stacks 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) from bottom to top, and further comprises a stand column, 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 stand columns.

Images