Photovoltaic-radiation refrigeration integrated glass curtain wall sunshade component

Abstract

The invention discloses a photovoltaic-radiation refrigeration integrated glass curtain wall sunshade component, and relates to the technical field of photovoltaic building energy conservation, and the photovoltaic-radiation refrigeration integrated glass curtain wall sunshade component comprises a building wall surface, glass, an outer frame, a stand column, a sliding rail, an execution mechanism and a sunshade unit; the building wall surface is of a square structure and serves as a room enclosing wall and a positioning foundation; the glass is fixed on a peripheral building wall surface; the outer frame is fixed at the top end of the glass; the two stand columns are fixed to the two sides of the outer frame respectively, and a sliding rail is fixed in each stand column. The sunshade unit is arranged between the two sliding rails through an executing mechanism and comprises photovoltaic shutters, the sunshade area and angle are adjusted through the photovoltaic shutters, the radiation refrigeration function is implemented, and therefore the multiple functions of sunshade, power generation and heat dissipation are achieved, and dynamic balance of target indoor illumination and high power generation efficiency is continuously maintained. The technical effects of collaborative optimization of photovoltaic and sunshade functions, improvement of the heat dissipation effect, improvement of the regulation and control flexibility, meeting of the lighting requirement, maximization of the power generation efficiency and improvement of the energy-saving effect can be achieved at the same time.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic building energy-saving technology, and in particular to a photovoltaic-radiation cooling integrated glass curtain wall shading component. Background Technology

[0002] Glass curtain wall shading components are key devices for regulating solar radiation and reducing indoor heat load. Common forms include metal louvers, grilles, and smart films. They reduce air conditioning energy consumption and improve spatial comfort by blocking direct sunlight. Photovoltaic-radiative cooling technology combines solar power generation with radiative heat dissipation through atmospheric windows. It integrates photovoltaic cells (power generation) and a high emissivity coating (radiative cooling to space) on the surface of the shading component, achieving a triple function of "shading + power generation + cooling".

[0003] The integrated photovoltaic-radiative cooling design reduces the building's cooling load and supplements energy through photovoltaic power generation, improving energy utilization efficiency and promoting the transformation of buildings from energy-consuming units to energy-producing units. It is an important direction for the upgrading of green curtain walls towards high efficiency and intelligence.

[0004] However, building-integrated photovoltaics (BIPV) technology faces the following technical bottlenecks in the application of large-area glass curtain wall buildings: (1) Although existing technologies combine photovoltaic modules with shading structures, they can only adjust the angle in one direction to track the solar altitude angle. They are not adaptable to changes in azimuth angle, resulting in limited solar energy conversion efficiency. Another solution is to embed photovoltaic cells into multi-layer glass. Although the structure is compact, the fixed angle design and heat dissipation problem in the enclosed space lead to a significant increase in battery temperature and a decrease in power generation efficiency, resulting in insufficient synergy between photovoltaic and shading functions. (2) Some designs use adjustable photovoltaic louvers installed between double-layer glass, but the small space leads to limitations in module size and rotation angle, and the heat dissipation in the enclosed space deteriorates, exacerbating the risk of battery aging. In addition, although some shading structures integrate photovoltaic and radiative cooling functions, the two are usually arranged as independent units in parallel, failing to achieve precise cooling of the heat source. The system complexity and volume increase, resulting in a prominent contradiction between intelligent adjustment and thermal management. (3) Existing technologies mostly focus on single function optimization (such as power generation or shading), lacking dynamic coupling management of the light and heat environment. They cannot directly target the heat dissipation of photovoltaic cells, resulting in limited cooling effect and difficulty in maximizing both light requirements and power generation efficiency. Summary of the Invention

[0005] This application provides a photovoltaic-radiation cooling integrated glass curtain wall shading component, which solves the technical problems in the prior art such as insufficient synergy between photovoltaic and shading functions, limited heat dissipation effect, low control flexibility, difficulty in simultaneously meeting the lighting needs and maximizing power generation efficiency, and limited energy-saving effect. It achieves the technical effects of optimizing the synergy between photovoltaic and shading functions, improving heat dissipation effect, increasing control flexibility, and simultaneously meeting the lighting needs and maximizing power generation efficiency, as well as improving energy-saving effect.

[0006] This application provides a photovoltaic-radiative cooling integrated glass curtain wall shading component, including a building wall, glass, outer frame, columns, sliding rails, actuators, and shading units;

[0007] The building wall has a square structure, serving as the room's enclosure and a positioning base; the glass is fixed to the outer building wall; the outer frame is fixed to the top of the glass; there are two columns, fixed to both sides of the outer frame, and each column has a sliding rail fixed inside;

[0008] The shading unit is installed between two slide rails via an actuator and includes photovoltaic louvers. The photovoltaic louvers adjust the shading area and angle and implement radiative cooling, thereby achieving multiple functions of shading, power generation and heat dissipation, and continuously maintaining a dynamic balance between the target indoor illuminance and high power generation efficiency.

[0009] Furthermore, the actuator includes a drive motor, a main gear, a driven gear, a rack ring, a rotating column, a connecting plate, and a linear motor;

[0010] The linear motor is fixed to the top of the inside of the column and is used to move the photovoltaic louvers up and down to adjust the shading area. A connecting plate is fixed to the moving end of the motor, and a drive motor is fixed inside the connecting plate. A main gear is fixed to the output end of the drive motor. Multiple driven gears are arranged evenly along the length of the column and are rotatably connected to the connecting plate through a rotating column. Both the main gear and the driven gear mesh with a rack ring to achieve the angular rotation of the photovoltaic louvers. The photovoltaic louvers are fixed on the rotating column.

[0011] Furthermore, the photovoltaic louvers are provided with multiple layers, which are placed horizontally and include, from top to bottom, a high-transmittance protective layer, a PMP radiation cooling layer, an EVA adhesive layer, a photovoltaic power generation layer, and a heat dissipation substrate.

[0012] Furthermore, the high-transmittance protective layer is made of tempered glass or hard-coated PC material with a transmittance greater than 91% and has a self-cleaning coating; the photovoltaic power generation layer is made of CIGS flexible film with a thickness of 1-2μm, used for power generation and heat generation; the EVA adhesive layer is used to bond the photovoltaic power generation layer and the heat dissipation substrate, forming a radiative cooling path that is in close contact with the battery surface; the heat dissipation substrate serves as the support and heat dissipation structure for the photovoltaic louvers, providing rigid support.

[0013] Furthermore, the PMP radiation cooling layer adopts a polymer-metal-polymer sandwich structure with a total thickness of ≤200 micrometers, a transmittance of more than 90% for visible light, and an emissivity of more than 90% for the infrared band.

[0014] Furthermore, the heat dissipation substrate is provided with two layers, including an inner layer and an outer layer;

[0015] The inner layer is a metal structure with honeycomb-structured through holes on its surface. These through holes are used to increase the heat dissipation area and quickly conduct the waste heat generated by the photovoltaic power generation layer to the external environment, thereby reducing the operating temperature of the battery cell.

[0016] The outer layer is a flexible structure made of silicone. It fills the micro-gaps through elastic deformation to ensure good contact with air, thereby reducing interfacial thermal resistance and adapting to thermal deformation.

[0017] Furthermore, the outer layer is a flexible microcapsule structure, which is filled with a paraffin layer with a thickness of 1-3 mm. The paraffin layer is a phase change material composite layer responsible for heat buffering, realizing thermal stress release and temperature smoothing, effectively absorbing heat and reducing temperature fluctuations.

[0018] Furthermore, a second sensor is fixed inside the building wall to monitor indoor illuminance; a first sensor is fixed outside the outer frame to monitor outdoor illuminance.

[0019] Furthermore, the main power generation circuit of the photovoltaic louver is equipped with sensor three, which uses voltage and current sensors to collect the power generation voltage and current data of all photovoltaic panels to obtain the actual power generation and provide a basis for the power generation priority control strategy.

[0020] Furthermore, both the drive motor and the linear motor are controlled by an external control unit. The external control unit has a built-in drive module, communication and algorithm unit. The external control unit is configured to dynamically adjust the angle and displacement of the shading unit based on the power generation voltage and current data (actual power generation) of sensor three, the outdoor illuminance data of sensor one, and the indoor illuminance data of sensor two, through a rolling optimization algorithm.

[0021] The rolling optimization algorithm is performed every 5 minutes and includes two control strategies:

[0022] Firstly, the light-priority control strategy: with maintaining the target indoor illuminance as the core constraint, the area (displacement) and angle of the shading unit are adjusted by using outdoor illuminance data from sensor one and indoor illuminance data from sensor two to ensure that the indoor illuminance reaches the set standard.

[0023] Secondly, the power generation priority control strategy: with the goal of maximizing the power generation of the photovoltaic louvers, the area and angle of the shading unit are adjusted by using the voltage and current data (power generation) from sensor three to maximize the power generation efficiency.

[0024] The external control unit can switch between or combine the two strategies mentioned above according to actual needs to achieve a dynamic balance between energy-saving lighting and power generation.

[0025] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0026] Through the coordinated operation of the actuator and the shading unit, the vertical displacement of the shading unit and the angular rotation of the photovoltaic louvers are achieved, thereby dynamically adjusting the shading area and the angle of sunlight incidence to achieve a real-time balance between power generation efficiency and indoor lighting. By optimizing the multi-layer structure of the photovoltaic louvers, solar power generation, radiative cooling, and efficient heat dissipation can be performed simultaneously, thereby reducing battery operating temperature and improving energy conversion efficiency. By setting voltage and current sensors and cooperating with Sensor 1 and Sensor 2, a dual logic control strategy prioritizing both lighting and power generation is adopted to directly optimize energy distribution, achieving a dynamic balance between improving power generation efficiency and reducing building energy consumption. This effectively solves the technical problems of insufficient synergy between photovoltaic and shading functions, limited heat dissipation effect, low control flexibility, difficulty in simultaneously meeting lighting needs and maximizing power generation efficiency, and limited energy-saving effect in existing technologies. It achieves the technical effects of synergistic optimization of photovoltaic and shading functions, improved heat dissipation effect, increased control flexibility, and simultaneous satisfaction of lighting needs and maximization of power generation efficiency, as well as improved energy-saving effect. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic-radiation cooling integrated glass curtain wall shading component according to the present invention.

[0028] Figure 2 This is a side structural cross-sectional view of the actuator, glass, and outer frame of a photovoltaic-radiation cooling integrated glass curtain wall shading component according to the present invention.

[0029] Figure 3 This invention relates to a photovoltaic-radiation cooling integrated glass curtain wall shading component. Figure 2 A magnified view of a portion of point A in the middle.

[0030] Figure 4 This is a partial structural cross-sectional view of the slide rail and actuator of a photovoltaic-radiation cooling integrated glass curtain wall sunshade component according to the present invention.

[0031] Figure 5 This is an exploded view of the photovoltaic louvers of a photovoltaic-radiation cooling integrated glass curtain wall shading component according to the present invention.

[0032] Figure 6 This is a cross-sectional view of the heat dissipation substrate of a photovoltaic-radiation cooling integrated glass curtain wall sunshade component according to the present invention.

[0033] Figure 7 This invention relates to a photovoltaic-radiation cooling integrated glass curtain wall shading component. Figure 6 A magnified view of a portion of point B in the middle.

[0034] In the diagram: 100, building wall; 101, glass; 110, outer frame; 120, column; 130, slide rail; 140, actuator; 141, drive motor; 142, main gear; 143, driven gear; 144, rack ring; 145, rotating column; 146, connecting plate; 147, linear motor; 150, sensor one; 160, sensor two; 200, shading unit; 210, photovoltaic louver; 211, high-transparency protective layer; 212, PMP radiative cooling layer; 213, EVA adhesive layer; 214, photovoltaic power generation layer; 220, heat dissipation substrate; 230, inner layer; 231, through hole; 240, outer layer; 241, paraffin wax. Detailed Implementation

[0035] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0036] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Please see Figure 1This is a schematic diagram of the overall structure of a photovoltaic-radiative cooling integrated glass curtain wall shading component according to the present invention. The photovoltaic-radiative cooling integrated glass curtain wall shading component of this application, through the cooperation of the actuator 140 and the shading unit 200, realizes the vertical displacement of the shading unit 200 and the angular rotation of the photovoltaic louvers 210, thereby dynamically adjusting the shading area and the angle of sunlight incidence, achieving a real-time balance between power generation efficiency and indoor lighting. By optimizing the multi-layer structure of the photovoltaic louvers 210, it can simultaneously perform solar power generation, radiative cooling, and efficient heat dissipation, thereby reducing the battery operating temperature and improving energy conversion efficiency. By setting voltage and current sensors and cooperating with sensor 150 and sensor 160, a dual logic control strategy prioritizing both lighting and power generation is adopted, directly optimizing energy distribution and achieving a dynamic balance between improving lighting and power generation. This achieves the technical effects of synergistic optimization of photovoltaic and shading functions, improved heat dissipation, increased control flexibility, and simultaneous satisfaction of lighting needs and maximization of power generation efficiency, resulting in improved energy-saving effects.

[0039] Example 1: As Figures 1 to 6 As shown, this application discloses a photovoltaic-radiation cooling integrated glass curtain wall shading component, including a building wall 100, glass 101, outer frame 110, column 120, slide rail 130, actuator 140 and shading unit 200.

[0040] The building wall 100 has a square structure and serves as the room enclosure wall and positioning base; the glass 101 is fixed to the outer building wall 100; the outer frame 110 is fixed to the top of the glass 101; there are two columns 120, which are fixed to both sides of the outer frame 110 respectively, and each column 120 has a slide rail 130 fixed inside.

[0041] The shading unit 200 is set between two slide rails 130 via an actuator 140 and includes photovoltaic louvers 210. The photovoltaic louvers 210 adjust the shading area and angle and implement radiative cooling function, thereby realizing multiple functions of shading, power generation and heat dissipation, and continuously maintaining a dynamic balance between the target indoor illuminance and high power generation efficiency.

[0042] like Figures 1 to 5 As shown, the actuator 140 includes a drive motor 141, a main gear 142, a driven gear 143, a rack ring 144, a rotating column 145, a connecting plate 146, and a linear motor 147.

[0043] The linear motor 147 is fixed inside the top of the column 120 and is used to move the photovoltaic louvers 210 up and down to adjust the shading area. The moving end of the linear motor 147 is fixed with a connecting plate 146. The connecting plate 146 is fixed with a drive motor 141 inside. The output end of the drive motor 141 is fixed with a main gear 142. Multiple driven gears 143 are provided and evenly arranged along the length of the column 120. They are rotatably connected to the connecting plate 146 through a rotating column 145. The main gear 142 and the driven gears 143 mesh with the rack ring 144 to realize the angular rotation of the photovoltaic louvers 210. The photovoltaic louvers 210 are fixed on the rotating column 145.

[0044] This application uses a linear motor 147 to drive the connecting plate 146 to move up and down, thereby achieving the overall displacement of the shading unit 200 and adjusting the shading coverage area. The drive motor 141 drives the rotating column 145 to rotate through a gear-rack system, thereby achieving the angular rotation of the photovoltaic louvers 210 and realizing the two-dimensional adjustment (displacement and angle) of the shading unit 200. This dynamically optimizes the solar incident angle and shading range, thus taking into account both power generation efficiency and indoor lighting needs. The dual-degree-of-freedom adjustment enhances flexibility and achieves comprehensive adaptation to the solar altitude angle and azimuth angle.

[0045] like Figures 5 to 7 As shown, the photovoltaic louver 210 is provided with multiple layers, which are placed horizontally and include, from top to bottom, a high-transparency protective layer 211, a PMP radiation cooling layer 212, an EVA adhesive layer 213, a photovoltaic power generation layer 214 and a heat dissipation substrate 220.

[0046] The high-transmittance protective layer 211 is made of tempered glass or hard-coated PC material with a transmittance greater than 91% and has a self-cleaning coating; the photovoltaic power generation layer 214 is made of CIGS flexible film with a thickness of 1-2μm, used for power generation and heat generation; the EVA adhesive layer 213 is used to bond the photovoltaic power generation layer 214 and the heat dissipation substrate 220, forming a radiative cooling path that is in close contact with the battery surface; the heat dissipation substrate 220 serves as the support and heat dissipation structure for the photovoltaic louvers 210, providing rigid support.

[0047] The PMP radiation cooling layer 212 adopts a polymer-metal-polymer sandwich structure with a total thickness of ≤200 micrometers, a transmittance of more than 90% for visible light, and an emissivity of more than 90% for infrared band.

[0048] This application utilizes a photovoltaic power generation layer 214 to absorb sunlight and generate heat, and a PMP radiative cooling layer 212 to emit high infrared light, radiating heat into space. A high-transmittance protective layer 211 provides protection and maintains high light transmittance. This solves the problem of low functional integration and achieves "power generation-cooling-shading" integration through high integration, improving space efficiency and cooling effect.

[0049] like Figures 5 to 7 As shown, the heat dissipation substrate 220 is provided with two layers, including an inner layer 230 and an outer layer 240;

[0050] The inner layer 230 is a metal structure with honeycomb-structured through holes 231 on its surface. The through holes 231 are used to increase the heat dissipation area and quickly conduct the waste heat generated by the photovoltaic power generation layer 214 to the external environment, thereby reducing the working temperature of the battery cell.

[0051] The outer layer 240 is a flexible structure made of silicone. It fills the micro gaps through elastic deformation to ensure good contact with air, thereby reducing interfacial thermal resistance and adapting to thermal deformation.

[0052] The outer layer 240 is a flexible microcapsule structure, which is filled with a paraffin layer 241. The paraffin layer 241 is 1-3 mm thick and is a phase change material composite layer. It is responsible for thermal buffering, realizing thermal stress release and temperature smoothing, effectively absorbing heat and reducing temperature fluctuations.

[0053] The inner layer 230 and outer layer 240 of the heat dissipation substrate 220 work together. The inner layer 230 is a metal structure with honeycomb through-holes 231 on its surface to increase the heat dissipation area. The outer layer 240 is a flexible microcapsule structure filled with a layer of paraffin 241 as a phase change material. The waste heat generated by the photovoltaic power generation layer 214 is quickly conducted to the external environment through the inner layer 230. The outer layer 240 absorbs heat through the phase change of the paraffin 241 layer to achieve thermal buffering. The honeycomb structure and phase change material improve heat dissipation efficiency and extend the life of the module.

[0054] A second sensor 160 is fixed inside the building wall 100 to monitor indoor illuminance; a first sensor 150 is fixed outside the outer frame 110 to monitor outdoor illuminance.

[0055] The photovoltaic louver 210 is equipped with a sensor three in its power generation circuit. The sensor is a voltage and current sensor used to collect the power generation voltage and current data of all photovoltaic panels to obtain the actual power generation and provide a basis for the power generation priority control strategy.

[0056] The drive motor 141 and linear motor 147 are both controlled by an external control unit. The external control unit has a built-in drive module, communication and algorithm unit. The external control unit is configured to dynamically adjust the angle and displacement of the shading unit 200 based on the power generation voltage and current data (actual power generation) of sensor 3, the outdoor illuminance data of sensor 150, and the indoor illuminance data of sensor 260 through a rolling optimization algorithm.

[0057] The rolling optimization algorithm is performed every 5 minutes and includes two control strategies:

[0058] Firstly, the light-priority control strategy: with maintaining the target indoor illuminance as the core constraint, the area (displacement) and angle of the shading unit 200 are adjusted by using the outdoor illuminance data from sensor 150 and the indoor illuminance data from sensor 260 to ensure that the indoor illuminance reaches the set standard.

[0059] Secondly, the power generation priority control strategy: with the photovoltaic louver 210 achieving maximum power generation as the core objective, the area and angle of the shading unit 200 are adjusted based on the voltage and current data (power generation) from sensor 3 to maximize power generation efficiency.

[0060] The external control unit can switch between or combine the two strategies mentioned above according to actual needs to achieve a dynamic balance between energy-saving lighting and power generation.

[0061] An external control unit is used to control the coordinated operation of various components. It is preferably a programmable logic controller and is electrically connected to a power source. The power source is generated by the photovoltaic louver 210 and equipped with an energy storage module to support off-grid operation. When necessary, it can be connected to the building's DC / AC bus. The actuator 140 has built-in position detection and limiting components, anti-pinch and wind-resistant position locks. These are all existing technologies and will not be described in detail here.

[0062] This application, by placing sensor three (using voltage and current sensors) in the main circuit of the photovoltaic louver 210 and cooperating with the power generation system, can collect the power generation voltage and current data of all photovoltaic panels, thereby obtaining the actual power generation and providing accurate data basis for the power generation priority control strategy. It can solve the technical problems of lack of real-time data support and difficulty in quantifying power generation performance in the existing technology, ensuring that the power generation strategy is dynamically optimized based on actual output and avoiding blind adjustment.

[0063] Through the coordinated process between the external control unit, drive motor 141, linear motor 147, sensor 150 (outdoor illuminance sensor), sensor 2 160 (indoor illuminance sensor), and sensor 3 (voltage and current sensor), the external control unit controls drive motor 141 and linear motor 147 based on sensor data (including power generation voltage and current, outdoor illuminance, and indoor illuminance) through a rolling optimization algorithm (executed once every 5 minutes). This enables dynamic adjustment of the angle and displacement of the shading unit 200, thereby achieving automatic switching or fusion of a light-priority control strategy (focusing on maintaining the target indoor illuminance) or a power generation-priority control strategy (focusing on maximizing power generation). This maintains a dynamic balance between indoor illuminance and power generation efficiency, solving the technical problems of insufficient synergy between photovoltaic and shading functions, low control flexibility, and difficulty in simultaneously meeting light-gathering needs and maximizing power generation efficiency in existing technologies. Multi-sensor closed-loop control improves adaptability and energy utilization efficiency.

[0064] In actual operation, the steps of this embodiment are as follows:

[0065] Step 1: After the device is powered on, the external control unit completes the self-test and initialization process. The power supply is provided by the photovoltaic louver 210 and is equipped with an energy storage module to support off-grid operation or connection to the building power grid. The sensor system (sensor 150, sensor 260, sensor 3) starts to work, and the actuator 140 (drive motor 141 and linear motor 147) is reset to the default position (such as the shading unit 200 in the fully extended state to maximize the initial conditions for power generation).

[0066] Step 2: The sensor system collects environmental data in real time. Sensor 150 monitors outdoor illuminance (including sun position and light intensity), Sensor 2160 monitors indoor actual illuminance (based on the working surface height), and Sensor 3 (voltage and current sensor) collects voltage and current data of the photovoltaic louver 210 power generation circuit to quantify the actual power generation. The data acquisition frequency is synchronized with the optimization cycle, usually updated every 5 minutes, but triggers immediate recalculation in case of sudden changes in light intensity or abnormal weather.

[0067] Step 3: Based on the data collected in Step 2, the external control unit executes a rolling optimization algorithm (every 5 minutes). The algorithm includes two strategies:

[0068] (1) Lighting priority control strategy: Taking the maintenance of indoor target illuminance as the core constraint, the optimal displacement and angle of shading unit 200 are calculated through the data of sensor 150 and sensor 2 to make the indoor illuminance reach the set standard. For example, on cloudy days, the louver angle is adjusted first to increase light transmission.

[0069] (2) Power generation priority control strategy: With the goal of maximizing the power generation of photovoltaic louver 210, the optimal angle of photovoltaic louver 210 (such as perpendicular to the sunlight) is calculated through the power generation data of sensor 3. For example, when the midday sun is strong, power generation is given priority. The external control unit automatically switches or integrates strategies according to actual needs (such as time period and weather) to achieve dynamic balance.

[0070] Step 4: The algorithm outputs two key parameters—the coverage area (displacement) of the shading unit 200 and the angle (0-90°) of the photovoltaic louvers 210—which are converted into execution commands. The control unit converts the optimized parameters into execution commands, driving the linear motor 147 and the drive motor 141 to move. Specifically, the linear motor 147 moves the connecting plate 146 and the shading unit 200 up and down within the slide rail 130 of the column 120, adjusting the shading area. For example, it moves downwards to increase shading during strong sunlight and upwards to improve light intake during weak sunlight. The drive motor 141, through the meshing of the main gear 142, the driven gear 143, and the rack ring 144, drives the rotating column 145 to rotate, changing the angle of the photovoltaic louvers 210, such as adjusting the louvers to be perpendicular to the sunlight to maximize power generation efficiency.

[0071] Step 5: During the adjustment process, the multi-layer structure of the photovoltaic louver 210 works synchronously: the photovoltaic power generation layer 214 absorbs sunlight to generate electricity; the PMP radiation cooling layer 212 has a high emissivity in the infrared band and radiates heat to space; the inner layer 230 of the heat dissipation substrate 220 increases the heat dissipation area through honeycomb through-holes 231, and the paraffin wax layer 241 of the outer layer 240 acts as a phase change material to absorb heat and achieve thermal buffering.

[0072] Step Six: The device enters continuous operation mode, repeating steps two through five every 5 minutes to form a closed-loop control. The rolling optimization algorithm dynamically adjusts parameters based on real-time data to adapt to day / night cycles and weather changes (e.g., switching to power generation priority on sunny days and solar energy priority on rainy days). The control unit supports manual or scene modes to improve adaptability.

[0073] The technical solutions described in the embodiments of this application have at least the following technical effects or advantages:

[0074] By combining the power generation data acquisition from sensor 3 with the rolling optimization algorithm of the external control unit, the data foundation for the power generation priority strategy and the dynamic adjustment of multiple strategies are realized: sensor 3 provides real-time power generation data, supporting the external control unit to adjust the angle and displacement of the shading unit 200 every 5 minutes based on the illuminance data from sensor 150 and sensor 2160, through drive motor 141 and linear motor 147, thereby intelligently switching between the light-priority (maintaining indoor illuminance) and power generation priority (maximizing power generation efficiency) strategies. This effectively solves the technical problems of insufficient synergy between photovoltaic and shading functions, limited heat dissipation effect, low control flexibility, difficulty in simultaneously meeting the light-receiving demand and maximizing power generation efficiency, and limited energy-saving effect in the existing technology. It realizes the technical effects of synergistic optimization of photovoltaic and shading functions, improved heat dissipation effect, improved control flexibility, and simultaneous meeting the light-receiving demand and maximizing power generation efficiency, and improved energy-saving effect.

[0075] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A photovoltaic-radiation cooling integrated glass curtain wall shading component, characterized in that, Includes building walls (100), glass (101), outer frame (110), columns (120), sliding rails (130), actuators (140) and sunshade units (200); The building wall (100) has a square structure, serving as the room enclosure and positioning base; the glass (101) is fixed to the outer building wall (100); the outer frame (110) is fixed to the top of the glass (101); there are two columns (120), which are fixed to both sides of the outer frame (110), and each column (120) has a slide rail (130) fixed inside. The shading unit (200) is set between two slide rails (130) via an actuator (140) and includes photovoltaic louvers (210). The photovoltaic louvers (210) adjust the shading area and angle and implement the radiative cooling function, thereby realizing multiple functions of shading, power generation and heat dissipation, and continuously maintaining a dynamic balance between the target indoor illuminance and high power generation efficiency.

2. The photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 1, characterized in that, The actuator (140) includes a drive motor (141), a main gear (142), a driven gear (143), a rack ring (144), a rotating column (145), a connecting plate (146), and a linear motor (147). The linear motor (147) is fixed at the top of the inside of the column (120) to realize the up and down movement of the photovoltaic louver (210) to adjust the shading area. The moving end of the motor is fixed with a connecting plate (146). The connecting plate (146) is fixed with a drive motor (141). The output end of the drive motor (141) is fixed with a main gear (142). Multiple driven gears (143) are provided and are evenly arranged along the length of the column (120). They are rotatably connected to the connecting plate (146) through a rotating column (145). The main gear (142) and the driven gears (143) mesh with the rack ring (144) to realize the angle rotation of the photovoltaic louver (210). The photovoltaic louver (210) is fixed on the rotating column (145).

3. The photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 2, characterized in that, The photovoltaic louver (210) is provided with multiple layers, which are placed horizontally and include, from top to bottom, a high-transparency protective layer (211), a PMP radiation cooling layer (212), an EVA adhesive layer (213), a photovoltaic power generation layer (214), and a heat dissipation substrate (220).

4. The photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 3, characterized in that, The high-transmittance protective layer (211) is made of tempered glass or hard-coated PC material with a transmittance greater than 91% and has a self-cleaning coating; the photovoltaic power generation layer (214) is made of CIGS flexible film with a thickness of 1-2μm, used to generate electricity and heat; the EVA adhesive layer (213) is used to bond the photovoltaic power generation layer (214) and the heat dissipation substrate (220), forming a radiation cooling path that is in close contact with the battery surface; the heat dissipation substrate (220) serves as the support and heat dissipation structure for the photovoltaic louvers (210), providing rigid support.

5. A photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 3, characterized in that, The PMP radiation cooling layer (212) adopts a polymer-metal-polymer sandwich structure with a total thickness of ≤200 micrometers, a transmittance of more than 90% for visible light, and an emissivity of more than 90% for infrared band.

6. The photovoltaic-radiative cooling integrated glass curtain wall shading component as described in claim 4, characterized in that, The heat dissipation substrate (220) is provided with two layers, including an inner layer (230) and an outer layer (240). The inner layer (230) is a metal structure with honeycomb-structured through holes (231) on its surface. The through holes (231) are used to increase the heat dissipation area and quickly conduct the waste heat generated by the photovoltaic power generation layer (214) to the external environment, thereby reducing the working temperature of the battery cell. The outer layer (240) is a flexible structure made of silicone. It fills the micro gaps through elastic deformation to ensure good contact with air, thereby reducing interfacial thermal resistance and adapting to thermal deformation.

7. A photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 6, characterized in that, The outer layer (240) is a flexible microcapsule structure, which is filled with a paraffin layer (241). The paraffin layer (241) is 1-3 mm thick and is a phase change material composite layer. It is responsible for heat buffering, realizing heat stress release and temperature smoothing, effectively absorbing heat and reducing temperature fluctuations.

8. A photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 1, characterized in that, Sensor 2 (160) is fixed inside the building wall (100) for monitoring indoor illuminance; sensor 1 (150) is fixed outside the outer frame (110) for monitoring outdoor illuminance.

9. A photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 6, characterized in that, The photovoltaic louver (210) is equipped with a sensor three in the main circuit of the power generation circuit. The sensor is a voltage and current sensor used to collect the power generation voltage and current data of all photovoltaic panels in order to obtain the actual power generation and provide a basis for the power generation priority control strategy.

10. A photovoltaic-radiation cooling integrated glass curtain wall shading component as described in claim 9, characterized in that, The drive motor (141) and linear motor (147) are both controlled by an external control unit. The external control unit has a built-in drive module, communication and algorithm unit. The external control unit is configured to dynamically adjust the angle and displacement of the shading unit (200) based on the power generation voltage and current data (actual power generation) of sensor three, the outdoor illuminance data of sensor one (150), and the indoor illuminance data of sensor two (160) through a rolling optimization algorithm. The rolling optimization algorithm is performed every 5 minutes and includes two control strategies: Firstly, the light-priority control strategy: with maintaining the target indoor illuminance as the core constraint, the area (displacement) and angle of the shading unit are adjusted by using the outdoor illuminance data from sensor one (150) and the indoor illuminance data from sensor two (160) to make the indoor illuminance reach the set standard. Secondly, the power generation priority control strategy: with the photovoltaic louvers (210) achieving maximum power generation as the core objective, the area and angle of the shading unit (200) are adjusted by using the voltage and current data (power generation) of sensor three to maximize power generation efficiency. The external control unit can switch between or combine the two strategies mentioned above according to actual needs to achieve a dynamic balance between energy-saving lighting and power generation.

Images