A thin film power generation glass supporting communication signal transmission and a preparation method thereof

Abstract

The application discloses a thin-film power generation glass supporting communication signal transmission and a preparation method thereof, and relates to the technical field of photovoltaic power generation glass. The power generation glass supporting wireless communication comprises a base glass and a power generation functional layer arranged on the base glass. Signal antireflection unit grooves which are distributed in a two-dimensional periodic array and penetrate through the power generation functional layer are arranged on the power generation functional layer. The signal antireflection unit grooves are centrosymmetric. The signal antireflection unit grooves comprise two central vertical intersecting straight grooves. Each straight groove is provided with a spiral groove which spirals from outside to inside and has a width consistent with the width of the straight groove at two ends of the straight groove. While guaranteeing basic power generation efficiency, the application realizes dual-polarization transmission of Sub-6GHz frequency band communication (frequency: 4GHz to 5GHz) and millimeter wave frequency band communication (frequency: 22GHz to 25GHz).

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic power generation glass technology, specifically, it relates to a thin-film power generation glass that supports communication signal transmission and its preparation method. Background Technology

[0002] Photovoltaic glass is widely used on building surfaces, effectively reducing building carbon emissions and greatly supporting the achievement of carbon peaking and carbon neutrality goals. Under the dual-carbon context, building-integrated photovoltaics (BIPV) is an inevitable path to achieving zero-carbon buildings. However, photovoltaic glass, a key material in BIPV, significantly shields wireless communication signals. In today's era of booming 5G and the imminent arrival of 6G communication, this will greatly impact quality of life and daily work. How to solve the interference of photovoltaic glass on wireless communication signals has become a critical issue that must be addressed in the information age under the dual-carbon context.

[0003] Photovoltaic power-generating glass is made by attaching photovoltaic thin-film power-generating modules, such as cadmium telluride thin-film modules or copper indium gallium selenide thin-film modules, onto a glass substrate. However, the power generation layer and electrode layer of the thin-film module can hinder the propagation of high-frequency electromagnetic signals. Currently, there is no technology that integrates wireless communication signal transmission characteristics into photovoltaic power-generating glass. Current technologies that combine transparent glass substrates with electromagnetic signal transmission characteristics do not have power generation capabilities, and electromagnetic devices integrating photovoltaic thin films and communication antennas cannot achieve wireless communication signal transmission, making them unsuitable for transparent windows and surfaces in applications such as buildings and automobiles.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a thin-film power-generating glass that supports communication signal transmission and a method for preparing the same, in order to solve the problem that existing power-generating glasses cannot achieve wireless communication signal transmission.

[0006] The objective of this invention can be achieved through the following technical solutions: A thin-film power-generating glass that supports communication signal transmission includes a substrate glass and a power-generating functional layer disposed on the substrate glass. The power-generating functional layer is provided with signal anti-reflection cell slots arranged in a two-dimensional periodic array and penetrating the power-generating functional layer.

[0007] The signal anti-reflection unit slot is centrally symmetrical. The signal anti-reflection unit slot includes two straight slots that intersect perpendicularly at their centers. Each straight slot has a spiral slot at both ends that rotates from the outside inwards and has a width consistent with the width of the straight slot.

[0008] The length of the straight groove is denoted as l0, the width of the straight groove is denoted as 2w, and the half width of the straight groove is w. The half width is half of the width.

[0009] Optionally, the gyratory groove includes n gyratory arc segments and gyratory straight segments that are alternately connected from the free ends of the straight segments. The gyratory groove also includes a gyratory tail segment connected to the tail end of the nth gyratory straight segment, where n represents the number of bends and gyrations.

[0010] Specifically, the spiral arc segment has a 90° fan-shaped notch structure, with an outer corner radius of 2w+p and an inner corner radius of p.

[0011] Specifically, the spiral straight segment is rectangular with a length of l. i The width is 2w, where i is the order of the spiral straight segment in the spiral groove. For example, the length of the first spiral straight segment is l1.

[0012] Specifically, the structure of the swirling tail section is semi-circular, with a radius equal to half the width of the straight groove.

[0013] It should be noted that the cyclone groove begins with a cyclone arc segment, followed by a cyclone straight segment, and then the cyclone arc segments and cyclone straight segments are alternately connected, finally ending with a cyclone tail segment. The cyclone straight segments are arranged perpendicular to the cyclone forward direction of the preceding cyclone straight segment, and the two are connected by cyclone arc segments. The number of bends and cyclones in the cyclone groove can be adjusted according to the target frequency band for enhancing signal transmission. When the number of bends and cyclones in the cyclone groove is n, the cyclone groove contains n cyclone arc segments and n cyclone straight segments, where the order of the cyclone straight segments is set according to the connection order. For example, the first cyclone straight segment is the 1st cyclone straight segment with a length of l1, the nth cyclone straight segment is the nth cyclone straight segment with a length of l... n .

[0014] Optionally, the area of ​​the signal anti-reflection unit slot to the total area of ​​the power generation functional layer is the area etching ratio, denoted as A, where A ≤ 50%.

[0015] Optionally, the target frequency band for enhancing communication signal transmission is the millimeter wave band (frequency from 22 GHz to 25 GHz): The spacing D between two adjacent signal anti-reflection unit slots is between 0.6mm and 1.5mm, i.e., 0.6mm≤D≤1.5mm; Preferably, n is 3; Preferably, the length l0 of the straight groove is between 0.2 mm and 0.55 mm; the half width w of the straight groove is between 0.02 and 0.06 mm.

[0016] Specifically, the gyratory groove includes a first gyratory arc segment, a first gyratory straight segment, a second gyratory arc segment, a second gyratory straight segment, a third gyratory arc segment, a third gyratory straight segment, and a gyratory tail segment that are sequentially connected from the free end of the straight groove. Preferably, the first spiral straight section is perpendicularly disposed on one side of the free end of the connected straight groove, the second spiral straight section is perpendicularly disposed in the spiral forward direction of the first spiral straight section, the third spiral straight section is perpendicularly disposed in the spiral forward direction of the second spiral straight section, the first spiral arc section connects the free end of the straight groove and the first spiral straight section, the second spiral arc section connects the first spiral straight section and the second spiral straight section, the third spiral arc section connects the second spiral straight section and the third spiral straight section; the spiral tail section is connected to the other end of the third spiral straight section. Preferably, the lengths l1, l2, and l3 of the first spiral straight segment are all between 0.03 and 0.6 mm; and the inner radius p of the spiral arc segment is between 0.01 and 0.1 mm.

[0017] It should be noted that the values ​​of all the geometric parameters, including D, l0, l1, l2, l3, w, and p, need to be selected according to the specific communication requirements and power generation efficiency, and at the same time, they need to meet the shape constraints of the gyro groove pattern and must not destroy the overall geometry.

[0018] Optionally, the target frequency band for enhancing communication signal transmission is a dual-band band, including a Sub-6GHz band (frequency from 4GHz to 5GHz) and a millimeter-wave band (frequency from 24GHz to 25GHz). The spacing D between two adjacent signal anti-reflection unit slots is between 2mm and 6mm, i.e., 2mm≤D≤6mm; Preferably, n is 6; The length l0 of the straight groove is between 0.1 mm and 2.8 mm; the half width w of the straight groove is between 0.03 and 0.12 mm.

[0019] Specifically, the gyratory groove further includes a fourth gyratory arc segment, a fourth gyratory straight segment, a fifth gyratory arc segment, a fifth gyratory straight segment, a sixth gyratory arc segment, and a sixth gyratory straight segment; Preferably, the fourth spiraling straight segment is perpendicular to the spiraling forward direction of the third spiraling straight segment; the fifth spiraling straight segment is perpendicular to the spiraling forward direction of the fourth spiraling straight segment; the sixth spiraling straight segment is perpendicular to the spiraling forward direction of the fifth spiraling straight segment; the fourth spiraling arc segment connects the third and fourth spiraling straight segments, the fifth spiraling arc segment connects the fourth and fifth spiraling straight segments, and the sixth spiraling arc segment connects the fifth and sixth spiraling straight segments. The spiraling tail segment is connected to the other end of the sixth spiraling straight segment. Preferably, the lengths l1, l2, l3, l4, l5, and l6 of the first spiral straight segment, the second spiral straight segment, the third spiral straight segment, the fourth spiral straight segment, the fifth spiral straight segment, and the sixth spiral straight segment are all between 0.01 and 2 mm; the inner radius p of the spiral arc segment is between 0.01 and 0.12 mm.

[0020] It should be noted that the values ​​of all the geometric parameters, including D, l0, l1, l2, l3, l4, l5, l6, w, and p, need to be selected according to the specific communication requirements and power generation efficiency, and at the same time, they need to meet the shape constraints of the gyro groove pattern and must not destroy the overall geometry.

[0021] Optionally, the power generation functional layer includes, but is not limited to, a transparent conductive layer, a power generation layer, and a back electrode layer.

[0022] Optionally, the power-generating glass supporting wireless communication may also include a backplate glass covering the power-generating functional layer.

[0023] In a second aspect, the present invention provides a method for preparing a thin-film power-generating glass that supports communication signal transmission. The method includes providing a substrate glass, preparing a power-generating functional layer on the substrate glass, and preparing signal anti-reflection cell grooves arranged in a two-dimensional periodic array and penetrating the power-generating functional layer on the power-generating functional layer. The signal anti-reflection cell grooves are prepared by laser etching line filling or laser direct writing.

[0024] Optionally, when laser etching is performed by filling lines with laser etching, the processing speed is 2000-4000 mm / s, the laser frequency is 1500-3000 kHz, and the laser power is 10-25 W. When laser etching is performed using direct laser writing, the laser processing speed is 1000-2000 mm / s, the laser frequency is 500-1200 kHz, and the laser power is 50-180 W.

[0025] Optionally, the wavelength of the laser is a laser with a wavelength of 355nm, 532nm, or 1064nm.

[0026] Optionally, the preparation method further includes: covering the power generation functional layer with a backplate glass using adhesive.

[0027] The beneficial effects of this invention are: This invention utilizes a two-dimensional periodic array of signal anti-reflection cell slots distributed throughout the power generation functional layer. This allows for dual-polarization transmission of both Sub-6GHz band communication (frequency from 4GHz to 5GHz) and millimeter-wave band communication (frequency from 22GHz to 25GHz) while maintaining basic power generation efficiency. Furthermore, the fabrication method of this invention is simple and easy to implement. Attached Figure Description

[0028] The invention will now be further described with reference to the accompanying drawings.

[0029] Figure 1 This is a schematic diagram of the signal anti-reflection unit slot in Example 1.

[0030] Figure 2 This is a schematic diagram of the structure of the power-generating glass in Example 1.

[0031] Figure 3 This is a schematic diagram of the signal anti-reflection unit slot in Example 2.

[0032] Figure 4 This is a simulation result of the transmission amplitude of the power-generating glass in Example 1.

[0033] Figure 5 These are the IV curve test results of the power-generating glass in Example 1.

[0034] Figure 6 The image shows the simulation results of the transmission amplitude of the power-generating glass in Example 2.

[0035] Figure 7 These are the IV curve test results of the power-generating glass in Example 2. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] A type of thin-film photovoltaic glass that supports communication signal transmission, such as Figure 1 , Figure 2 As shown, it includes a base glass and a power generation functional layer disposed on the base glass. The power generation functional layer is provided with signal anti-reflection unit slots 1 that are distributed in a two-dimensional periodic array and penetrate the power generation functional layer. The signal anti-reflection unit slot 1 is centrally symmetrical. The signal anti-reflection unit slot 1 includes two straight slots 1-1 that intersect perpendicularly at their centers. Each straight slot 1-1 has a spiral slot 1-2 at both ends that rotates from the outside inward and has the same width as the straight slot 1-1.

[0038] This embodiment provides signal anti-reflection unit slots arranged in a two-dimensional periodic array on the power generation functional layer, which penetrate the power generation functional layer. This ensures basic power generation efficiency while achieving dual-polarization transmission for Sub-6GHz band communication (frequency from 4GHz to 5GHz) and millimeter-wave band communication (frequency from 22GHz to 25GHz).

[0039] In some embodiments, the area of ​​the signal antireflection unit groove 1 as a percentage of the total area of ​​the power generation functional layer is the area etching ratio, denoted as A, where A ≤ 50%. Because the etching groove structure directly prevents the etched portion from generating electricity, A ≤ 50% is required to ensure the basic power generation function of the power generation glass behind the etching groove structure.

[0040] It should be noted that the length of the straight groove 1-1 is l0, the width of the straight groove 1-1 is denoted as 2w, and the half width of the straight groove 1-1 is w. The so-called half width is half of the width.

[0041] In some embodiments, the swirling groove 1-2 includes n swirling arc segments and swirling straight segments that are sequentially and alternately swirling from the free ends of the straight groove 1-1. The swirling groove 1-2 also includes a swirling tail segment connected to the tail end of the nth swirling straight segment, where n represents the number of bends and swirling.

[0042] In some embodiments, the spiral arc segment has a 90° fan-shaped notch structure with an outer radius of 2w+p and an inner radius of p.

[0043] In some embodiments, the spiral straight section is rectangular with a length of l. i The width is 2w, where i represents the order of the spiral straight segment in the spiral groove. For example, the length of the first spiral straight segment is l1. The length of the second spiral straight segment is l2. The length of the third spiral straight segment is l3. The length of the fourth spiral straight segment is l4. The length of the fifth spiral straight segment is l5. The length of the sixth spiral straight segment is l6.

[0044] In some embodiments, the structure of the swirling tail section is semi-circular, with a radius equal to half the width of the straight groove 1-1.

[0045] It should be noted that the cyclone groove 1-2 is composed of a cyclone arc segment, followed by a cyclone straight segment, then alternating cyclone arc segments and cyclone straight segments, and finally ending with a cyclone tail segment. The cyclone straight segments are arranged perpendicular to the cyclone forward direction of the preceding cyclone straight segment, and the two are connected by cyclone arc segments. The number of bends and cyclones in the cyclone groove 1-2 can be adjusted according to the target frequency band for enhanced signal transmission. When the number of bends and cyclones in the cyclone groove 1-2 is n, the cyclone groove 1-2 contains n cyclone arc segments and n cyclone straight segments, where the order of the cyclone straight segments is set according to the connection order. For example, the first cyclone straight segment is the 1st cyclone straight segment with a length of l1, the nth cyclone straight segment is the nth cyclone straight segment with a length of l n .

[0046] In one implementation, the target frequency band for enhancing communication signal transmission is the millimeter-wave band (frequency from 22 GHz to 25 GHz). The spacing D between two adjacent signal anti-reflection unit slots 1 is between 0.6mm and 1.5mm, i.e. 0.6mm≤D≤1.5mm; Preferably, n is 3; Preferably, the length l0 of the straight groove 1-1 is between 0.2 mm and 0.55 mm; the half width w of the straight groove 1-1 is between 0.02 and 0.06 mm.

[0047] Specifically, the swirling groove 1-2 includes a first swirling arc segment 1-2-1, a first swirling straight segment 1-2-2, a second swirling arc segment 1-2-3, a second swirling straight segment 1-2-4, a third swirling arc segment 1-2-5, a third swirling straight segment 1-2-6, and a swirling tail segment 1-2-7, which are sequentially connected from the free end of the straight groove 1-1.

[0048] The first spiral straight segment 1-2-2 is perpendicularly disposed on one side of the free end of the connected straight groove 1-1. The second spiral straight segment 1-2-4 is perpendicularly disposed in the spiraling direction of the first spiral straight segment 1-2-2. The third spiral straight segment 1-2-6 is perpendicularly disposed in the spiraling direction of the second spiral straight segment 1-2-4. The first spiral arc segment 1-2-1 connects the free end of the straight groove 1-1 and the first spiral straight segment 1-2-2. The second spiral arc segment 1-2-3 connects the first spiral straight segment 1-2-2 and the second spiral straight segment 1-2-4. The third spiral arc segment 1-2-5 connects the second spiral straight segment 1-2-4 and the third spiral straight segment 1-2-6. The spiral tail segment 1-2-7 is connected to the other end of the third spiral straight segment 1-2-6.

[0049] The length l1 of the first spiral straight segment 1-2-2, the length l2 of the second spiral straight segment 1-2-4, and the length l3 of the third spiral straight segment 1-2-6 are all between 0.03 and 0.6 mm; the inner radius p of the spiral arc segment is between 0.01 and 0.1 mm.

[0050] It should be noted that the values ​​of all geometric parameters, including D, l0, l1, l2, l3, w, and p, must be selected according to specific communication requirements and power generation efficiency, while also meeting the shape constraints of the gyro groove pattern and not disrupting the overall geometry.

[0051] In one implementation, the target frequency band for enhancing communication signal transmission is a dual-band band comprising a Sub-6GHz band (frequency from 4GHz to 5GHz) and a millimeter-wave band (frequency from 24GHz to 25GHz). The spacing D between two adjacent signal anti-reflection unit slots 1 is between 2mm and 6mm, that is, 2mm≤D≤6mm; Preferably, n is 6; The length l0 of the straight groove 1-1 is between 0.1 mm and 2.8 mm; the half width w of the straight groove 1-1 is between 0.03 and 0.12 mm.

[0052] Specifically, such as Figure 3 As shown, the gyratory groove 1-2 further includes a fourth gyratory arc segment 1-2-8, a fourth gyratory straight segment 1-2-9, a fifth gyratory arc segment 1-2-10, a fifth gyratory straight segment 1-2-11, a sixth gyratory arc segment 1-2-12, and a sixth gyratory straight segment 1-2-13.

[0053] The fourth spiral straight segment 1-2-9 is perpendicular to the spiraling direction of the third spiral straight segment 1-2-6; the fifth spiral straight segment 1-2-11 is perpendicular to the spiraling direction of the fourth spiral straight segment 1-2-9; the sixth spiral straight segment 1-2-13 is perpendicular to the spiraling direction of the fifth spiral straight segment 1-2-11; the fourth spiral arc segment 1-2-8 connects the third spiral straight segment 1-2-6 and the fourth spiral straight segment 1-2-9; the fifth spiral arc segment 1-2-10 connects the fourth spiral straight segment 1-2-9 and the fifth spiral straight segment 1-2-11; and the sixth spiral arc segment 1-2-12 connects the fifth spiral straight segment 1-2-11 and the sixth spiral straight segment 1-2-13. The spiral tail segment 1-2-7 is connected to the other end of the sixth spiral straight segment 1-2-13.

[0054] The lengths of the first spiral straight segment 1-2-2 (l1), the second spiral straight segment 1-2-4 (l2), the third spiral straight segment 1-2-6 (l3), the fourth spiral straight segment 1-2-9 (l4), the fifth spiral straight segment 1-2-11 (l5), and the sixth spiral straight segment 1-2-13 (l6) are all between 0.01 and 2 mm; the inner radius p of the spiral arc segment is between 0.01 and 0.12 mm.

[0055] It should be noted that the values ​​of all geometric parameters, including D, l0, l1, l2, l3, l4, l5, l 6、 w and p need to be selected based on specific communication requirements and power generation efficiency, while also meeting the shape constraints of the gyratory groove pattern and not disrupting the overall geometry.

[0056] In some embodiments, the power generation functional layer includes, but is not limited to, a transparent conductive layer, a power generation layer, and a back electrode layer.

[0057] In some embodiments, the power-generating glass supporting wireless communication also includes a backplate glass covering the power-generating functional layer.

[0058] The present invention also provides a method for preparing a thin-film power-generating glass that supports communication signal transmission. The method includes providing a substrate glass, preparing a power-generating functional layer on the substrate glass, and preparing signal anti-reflection cell grooves 1 that are distributed in a two-dimensional periodic array and penetrate the power-generating functional layer on the power-generating functional layer. The signal anti-reflection cell grooves 1 are prepared by laser etching line filling or laser direct writing.

[0059] In some implementations, when laser etching is performed using a line-filling method, the processing speed is 2000-4000 mm / s, the laser frequency is 1500-3000 kHz, and the laser power is 10-25 W.

[0060] In some implementations, when laser etching is performed using direct laser writing, the laser processing speed is 1000-2000 mm / s, the laser frequency is 500-1200 kHz, and the laser power is 50-180 W.

[0061] In some embodiments, the wavelength of the laser is a laser with a wavelength of 355nm, 532nm, or 1064nm.

[0062] In some embodiments, the preparation method further includes covering the power generation functional layer with a backplate glass using adhesive.

[0063] During preparation, a structural adhesive can be used to laminate the substrate glass with the power generation functional layer to the back glass. The lamination time is 200-800s, the temperature is 100-180℃, and the pressure is 10-100kPa. The structural adhesive can be one or more of polyolefin elastomer (POE), polyvinyl butyral (PVB), and polyethylene-polyvinyl acetate copolymer (EVA), with a thickness of 0.5-2mm. The back glass is one of ultra-clear tempered glass, ordinary tempered glass, and semi-tempered glass, with a preferred thickness of 2-25mm.

[0064] The present invention will be further described below with reference to specific embodiments.

[0065] The substrate glass in Examples 1 and 2 has a dielectric constant of 6.874, a loss tangent of 0.0161, and a thickness of 3.2 mm; the photovoltaic encapsulant layer has a dielectric constant of 2.2401, a loss tangent of 0.03364, and a thickness of 1 mm; the backsheet glass has a dielectric constant of 6.756, a loss tangent of 0.0133, and a thickness of 13 mm; the photovoltaic thin-film module layer is approximately an ohmic sheet with no thickness, and a sheet resistance of 0.6 Ω. The dimensions of the substrate glass are 284 mm × 284 mm. Example 1

[0066] like Figure 1 , Figure 2 As shown, this embodiment is a power-generating glass that supports wireless communication, specifically supporting millimeter-wave frequency band communication from 22GHz to 25GHz. The power-generating glass in this embodiment includes a base glass and a power-generating functional layer disposed on the base glass. The power-generating functional layer has signal anti-reflection unit slots 1 arranged in a two-dimensional periodic array and penetrating the entire layer. The spacing D between two adjacent signal anti-reflection unit slots 1 is equal to 1.42mm, and the number of bends and rotations n is 3.

[0067] The signal anti-reflection unit slot 1 is centrally symmetrical and includes two straight slots 1-1 that intersect perpendicularly at their centers. Each straight slot 1-1 has a spiral slot 1-2 at both ends that rotates from the outside inwards and has a width consistent with that of the straight slot 1-1. The length l0 of the straight slot 1-1 is 0.502 mm, and the width 2w is 0.1168 mm, where w is half the width of the straight slot 1-1, which is 0.0584 mm.

[0068] The swirling groove 1-2 includes a first swirling arc segment 1-2-1, a first swirling straight segment 1-2-2, a second swirling arc segment 1-2-3, a second swirling straight segment 1-2-4, a third swirling arc segment 1-2-5, a third swirling straight segment 1-2-6, and a swirling tail segment 1-2-7, which are connected sequentially from the free end of the straight groove 1-1.

[0069] The first spiral straight segment 1-2-2 is perpendicularly disposed on one side of the free end of the connected straight groove 1-1. The second spiral straight segment 1-2-4 is perpendicularly disposed in the spiraling direction of the first spiral straight segment 1-2-2. The third spiral straight segment 1-2-6 is perpendicularly disposed in the spiraling direction of the second spiral straight segment 1-2-4. The first spiral arc segment 1-2-1 connects the free end of the straight groove 1-1 and the first spiral straight segment 1-2-2. The second spiral arc segment 1-2-3 connects the first spiral straight segment 1-2-2 and the second spiral straight segment 1-2-4. The third spiral arc segment 1-2-5 connects the second spiral straight segment 1-2-4 and the third spiral straight segment 1-2-6. The spiral tail segment 1-2-7 is connected to the other end of the third spiral straight segment 1-2-6.

[0070] The length l1 of the first spiral straight segment 1-2-2 is 0.448 mm, the length l2 of the second spiral straight segment 1-2-4 is 0.107 mm, and the length l3 of the third spiral straight segment 1-2-6 is 0.0821 mm. The inner radius p of the spiral arc segment is 0.0136 mm.

[0071] The signal enhancement unit slot 1 occupies 36.31% of the total area of ​​the power generation functional layer.

[0072] The power-generating glass supporting millimeter-wave frequency band communication also includes a backplate glass covering the power-generating functional layer.

[0073] The method for preparing power-generating glass that supports wireless communication in this embodiment includes the following steps: A substrate glass is provided, a power generation functional layer is prepared on the substrate glass, and a signal anti-reflection cell groove 1 is prepared on the power generation functional layer in a two-dimensional periodic array and penetrating the power generation functional layer. The signal anti-reflection cell groove 1 is prepared by laser etching line filling or laser direct writing.

[0074] This embodiment uses laser etching for line filling, with a processing speed of 3000 mm / s, a laser frequency of 2000 kHz, and a laser power of 15 W. The laser wavelength is 1064 nm.

[0075] A backplate glass is applied over the power generation functional layer using adhesive. During fabrication, a structural adhesive is used to laminate the base glass with the power generation functional layer to the backplate glass. The lamination time is 450 seconds, the temperature is 145°C, and the pressure is 40 kPa. The structural adhesive is PVB with a thickness of 1 mm. The backplate glass is one of ultra-clear tempered glass, ordinary tempered glass, or semi-tempered glass, with a preferred thickness of 3.2 mm. Example 2

[0076] like Figure 3As shown, this embodiment differs from Embodiment 1 in that the target frequency band for enhancing communication signal transmission is a dual-band band, including a Sub-6G band with frequencies from 4GHz to 5GHz and a millimeter-wave band with frequencies from 24GHz to 25GHz. The spacing D between two adjacent signal anti-reflection unit slots 1 is equal to 4.4mm. The number of bends and rotations n is 6. The length l0 of the straight slot 1-1 is equal to 1.71mm, and the half-width w is equal to 0.12mm.

[0077] The swirling groove 1-2 includes a first swirling arc segment 1-2-1, a first swirling straight segment 1-2-2, a second swirling arc segment 1-2-3, a second swirling straight segment 1-2-4, a third swirling arc segment 1-2-5, a third swirling straight segment 1-2-6, a fourth swirling arc segment 1-2-8, a fourth swirling straight segment 1-2-9, a fifth swirling arc segment 1-2-10, a fifth swirling straight segment 1-2-11, a sixth swirling arc segment 1-2-12, a sixth swirling straight segment 1-2-13, and a swirling tail segment 1-2-7, which are connected sequentially from the free end of the straight groove 1-1.

[0078] The first spiral straight segment 1-2-2 is perpendicularly disposed on one side of the free end of the connected straight groove 1-1. The second spiral straight segment 1-2-4 is perpendicularly disposed in the spiral forward direction of the first spiral straight segment 1-2-2. The third spiral straight segment 1-2-6 is perpendicularly disposed in the spiral forward direction of the second spiral straight segment 1-2-4. The first spiral arc segment 1-2-1 is connected between the free end of the straight groove 1-1 and the first spiral straight segment 1-2-2. The second spiral arc segment 1-2-3 is connected between the first spiral straight segment 1-2-2 and the second spiral straight segment 1-2-4. The third spiral arc segment 1-2-5 is connected between the second spiral straight segment 1-2-4 and the third spiral straight segment 1-2-6. The swivel tail segment 1-2-7 is connected to the other end of the third swivel straight segment 1-2-6; the fourth swivel straight segment 1-2-9 is perpendicular to the swivel direction of the third swivel straight segment 1-2-6; the fifth swivel straight segment 1-2-11 is perpendicular to the swivel direction of the fourth swivel straight segment 1-2-9; the sixth swivel straight segment 1-2-13 is perpendicular to the swivel direction of the fifth swivel straight segment 1-2-11; the fourth swivel arc segment 1-2-8 is connected between the third swivel straight segment 1-2-6 and the fourth swivel straight segment 1-2-9; the fifth swivel arc segment 1-2-10 is connected between the fourth swivel straight segment 1-2-9 and the fifth swivel straight segment 1-2-11; and the sixth swivel arc segment 1-2-12 is connected between the fifth swivel straight segment 1-2-11 and the sixth swivel straight segment 1-2-13. The swirling tail section 1-2-27 is connected to the other end of the sixth swirling straight section 1-2-13.

[0079] The length l1 of the first spiral straight segment 1-2-2 is 1.56 mm, the length l2 of the second spiral straight segment 1-2-4 is 1.13 mm, the length l3 of the third spiral straight segment 1-2-6 is 0.58 mm, the length l4 of the fourth spiral straight segment 1-2-9 is 0.81 mm, the length l5 of the fifth spiral straight segment 1-2-11 is 0.23 mm, and the length l6 of the sixth spiral straight segment 1-2-13 is 0.1 mm. The inner radius p of the spiral arc segment is equal to 0.018 mm.

[0080] Photoelectric conversion and communication performance For Example 1, under periodic boundary conditions, the simulation results of the transmission amplitude of normally incident waves under different polarizations are as follows: Figure 4 , Figure 5 As shown, this millimeter-wave band signal transmission-enhancing photovoltaic glass can support the effective transmission of electromagnetic signals in the 22GHz-25GHz band, achieving a transmission bandwidth of greater than 2GHz within a transmission loss range of less than 4dB, with a conversion efficiency of 5.08%.

[0081] For Example 2, under periodic boundary conditions, the simulation results of the transmission amplitude of normally incident waves under different polarizations are as follows: Figure 6 , Figure 7 As shown, this dual-band signal transmission enhanced photovoltaic glass can support the effective transmission of electromagnetic signals in the 4GHz-5GHz and 22GHz-25GHz frequency bands, achieving a transmission bandwidth of greater than 3GHz within a transmission loss range of less than 4dB, with a conversion efficiency of 7.32%.

[0082] In summary, the present invention provides a thin-film power-generating glass that supports communication signal transmission and its preparation method. By providing signal anti-reflection unit slots arranged in a two-dimensional periodic array on the power-generating functional layer and penetrating the power-generating functional layer, the present invention can ensure basic power generation efficiency while achieving dual-polarized transmission for Sub-6GHz band communication (frequency from 4GHz to 5GHz) and millimeter-wave band communication (frequency from 22GHz to 25GHz).

[0083] The above detailed embodiments provide a specific description of the analytical methods involved in this invention. It should be noted that the above description is only intended to help those skilled in the art better understand the methods and ideas of this invention, and is not intended to limit the scope of the invention. Without departing from the principles of this invention, those skilled in the art can make appropriate adjustments or modifications to this invention, and such adjustments and modifications should also fall within the protection scope of this invention.

Claims

1. A thin-film photovoltaic glass supporting communication signal transmission, characterized in that, It includes a base glass and a power generation functional layer disposed on the base glass, wherein the power generation functional layer is provided with signal anti-reflection unit slots (1) that are distributed in a two-dimensional periodic array and penetrate the power generation functional layer. The signal anti-reflection unit slot (1) is centrally symmetrical. The signal anti-reflection unit slot (1) includes two straight slots (1-1) that intersect vertically at their centers. Each straight slot (1-1) has a spiral slot (1-2) at both ends that rotates from the outside to the inside and has a width that is the same as the width of the straight slot (1-1).

2. The thin-film photovoltaic glass supporting communication signal transmission according to claim 1, characterized in that, The area of ​​the signal anti-reflection unit slot (1) is the ratio of the area of ​​the entire power generation functional layer to the area of ​​the area etching ratio, denoted as A, where A≤50%.

3. The thin-film photovoltaic glass supporting communication signal transmission according to claim 1, characterized in that, The swirling groove (1-2) includes n swirling arc segments and swirling straight segments that are alternately connected from the free end of the straight groove (1-1). The swirling groove (1-2) also includes a swirling tail segment connected to the tail end of the nth swirling straight segment, where n represents the number of bends and swirling of the swirling groove (1-2).

4. The thin-film photovoltaic glass supporting communication signal transmission according to claim 3, characterized in that, The spiral arc segment has a 90° fan-shaped notch structure. The outer radius of the fan-shaped notch structure is 2w+p, the inner radius is p, and w is half the width of the straight groove (1-1). The spiral straight section is rectangular; The swirling tail section is semi-circular, and the radius of the semi-circle is half the width of the straight groove (1-1).

5. A thin-film photovoltaic glass supporting communication signal transmission according to claim 4, characterized in that, When the target frequency band for enhancing the transmission of the communication signal of the power generation glass is the millimeter wave band, with a frequency of 24 GHz to 25 GHz, the spacing between two adjacent signal anti-reflection unit slots (1) is between 0.6 mm and 1.5 mm.

6. The thin-film photovoltaic glass supporting communication signal transmission according to claim 5, characterized in that, n is 3; The length of the straight groove (1-1) is between 0.2 mm and 0.55 mm; The half-width of the straight groove (1-1) is between 0.02 and 0.06 mm.

7. A thin-film photovoltaic glass supporting communication signal transmission according to claim 6, characterized in that, The swirling groove (1-2) includes a first swirling arc segment (1-2-1), a first swirling straight segment (1-2-2), a second swirling arc segment (1-2-3), a second swirling straight segment (1-2-4), a third swirling arc segment (1-2-5), a third swirling straight segment (1-2-6), and a swirling tail segment (1-2-7) that are connected sequentially from the free end of the straight groove (1-1). The first spiral straight section (1-2-2) is perpendicularly disposed on one side of the free end of the connected straight groove (1-1); the second spiral straight section (1-2-4) is perpendicularly disposed in the spiral forward direction of the first spiral straight section (1-2-2); the third spiral straight section (1-2-6) is perpendicularly disposed in the spiral forward direction of the second spiral straight section (1-2-4); the first spiral arc section (1-2-1) is connected between the free end of the straight groove (1-1) and the first spiral straight section (1-2-2); the second spiral arc section (1-2-3) is connected between the first spiral straight section (1-2-2) and the second spiral straight section (1-2-4); the third spiral arc section (1-2-5) is connected between the second spiral straight section (1-2-4) and the third spiral straight section (1-2-6); and the spiral tail section (1-2-7) is connected to the other end of the third spiral straight section (1-2-6). The lengths of the first spiral straight segment (1-2-2), the second spiral straight segment (1-2-4), and the third spiral straight segment (1-2-6) are all between 0.03 and 0.6 mm; the inner corner radii of the first spiral arc segment (1-2-1), the second spiral arc segment (1-2-3), and the third spiral arc segment (1-2-5) are between 0.01 and 0.1 mm.

8. A thin-film photovoltaic glass supporting communication signal transmission according to claim 4, characterized in that, The target frequency band for enhancing the transmission of the communication signal of the power generation glass is a dual-band band, including a Sub-6G band with a frequency of 4GHz to 5GHz and a millimeter-wave band with a frequency of 24GHz to 25GHz. The spacing between two adjacent signal anti-reflection unit slots (1) is between 2mm and 6mm.

9. A thin-film photovoltaic glass supporting communication signal transmission according to claim 8, characterized in that, n is 6; The length of the straight groove (1-1) is between 0.1 mm and 2.8 mm; The half-width of the straight groove (1-1) is between 0.03 and 0.12 mm.

10. A thin-film photovoltaic glass supporting communication signal transmission according to claim 9, characterized in that, The swirling groove (1-2) includes a first swirling arc segment (1-2-1), a first swirling straight segment (1-2-2), a second swirling arc segment (1-2-3), a second swirling straight segment (1-2-4), a third swirling arc segment (1-2-5), a third swirling straight segment (1-2-6), a fourth swirling arc segment (1-2-8), a fourth swirling straight segment (1-2-9), a fifth swirling arc segment (1-2-10), a fifth swirling straight segment (1-2-11), a sixth swirling arc segment (1-2-12), a sixth swirling straight segment (1-2-13), and a swirling tail segment (1-2-7), which are connected sequentially from the free end of the straight groove (1-1). The first spiral straight segment (1-2-2) is perpendicularly disposed on one side of the free end of the connected straight groove (1-1). The second spiral straight segment (1-2-4) is perpendicularly disposed in the spiraling direction of the first spiral straight segment (1-2-2). The third spiral straight segment (1-2-6) is perpendicularly disposed in the spiraling direction of the second spiral straight segment (1-2-4). The first spiral arc segment (1-2-1) is connected to the free end of the straight groove (1-1) and... Between the first spiral straight segment (1-2-2), the second spiral arc segment (1-2-3) connects the first spiral straight segment (1-2-2) and the second spiral straight segment (1-2-4), the third spiral arc segment (1-2-5) connects the second spiral straight segment (1-2-4) and the third spiral straight segment (1-2-6); the spiral tail segment (1-2-7) connects to the other end of the third spiral straight segment (1-2-6); the fourth spiral... The straight section (1-2-9) is perpendicular to the direction of rotation of the third straight section (1-2-6); the fifth straight section (1-2-11) is perpendicular to the direction of rotation of the fourth straight section (1-2-9); the sixth straight section (1-2-13) is perpendicular to the direction of rotation of the fifth straight section (1-2-11); the fourth arc section (1-2-8) connects the third straight section (1-2-6) and the first straight section (1-2-9). Between the four spiral straight segments (1-2-9), the fifth spiral arc segment (1-2-10) connects the fourth spiral straight segment (1-2-9) and the fifth spiral straight segment (1-2-11), and the sixth spiral arc segment (1-2-12) connects the fifth spiral straight segment (1-2-11) and the sixth spiral straight segment (1-2-13); the spiral tail segment (1-2-7) connects to the other end of the sixth spiral straight segment (1-2-13). The lengths of the first spiral straight segment (1-2-2), the second spiral straight segment (1-2-4), the third spiral straight segment (1-2-6), the fourth spiral straight segment (1-2-9), the fifth spiral straight segment (1-2-11), and the sixth spiral straight segment (1-2-13) are all between 0.01 and 2 mm; the inner radius p of the spiral arc segment is between 0.01 and 0.12 mm.

11. A method for preparing a thin-film power-generating glass supporting communication signal transmission according to any one of claims 1-10, characterized in that, A substrate glass is provided, and a power generation functional layer is prepared on the substrate glass. Signal anti-reflection cell grooves (1) that are distributed in a two-dimensional periodic array and penetrate the power generation functional layer are prepared on the power generation functional layer. When preparing the signal anti-reflection cell grooves (1), laser etching is performed by laser etching line filling or laser direct writing.

12. The method for preparing thin-film photovoltaic glass supporting communication signal transmission according to claim 11, characterized in that, When laser etching is performed using the laser etching line filling method, the processing speed is 2000-4000mm / s, the laser frequency is 1500-3000kHz, and the laser power is 10-25W. When laser etching is performed using direct laser writing, the laser processing speed is 1000-2000 mm / s, the laser frequency is 500-1200 kHz, and the laser power is 50-180 W.

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