A multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection

Abstract

The present invention discloses a multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection, wherein the curtain wall system is composed of a building, a user control module, a sensor module, a motion unit module, a solar module, a charge-discharge control module, and a main control module, wherein the user control module, the sensor module, the motion unit module, the solar module, and the charge-discharge control module are all connected to the main control module. The curtain wall system of the present invention utilizes real-time adjustment of mirror reflection to efficiently collect solar energy from the building facade, and uses a building facade curtain wall system with multiple functions such as photovoltaic power generation and indoor light environment adjustment, thereby solving the problems of low power generation efficiency per unit area of ​​the existing photovoltaic curtain wall, easy obstruction of indoor sight, inability to adjust according to real-time solar position and environmental conditions, and inability to intelligently switch working modes to cope with different environmental conditions.

Description

Technical Field

[0001] The invention relates to the technical field of solar curtain walls, in particular to a multi-modal photovoltaic energy-saving building facade curtain wall system utilizing mirror reflection. Background Art

[0002] Photovoltaic power generation is also called solar power generation. Photovoltaic power generation uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. Photovoltaic power generation has attracted more and more attention due to its advantages of no environmental pollution, no risk of depletion, no restrictions on resource distribution and high energy quality. Using solar energy instead of conventional energy to meet the power requirements of buildings is called solar architecture. Solar architecture will become one of the development trends of low-energy and zero-energy buildings.

[0003] The building facade curtain wall is the exterior wall enclosure of the building. It does not bear weight, but has a certain displacement ability relative to the main structure or a certain deformation ability to achieve specific functions. It is an exterior protective structure of the building that does not bear the effects of the main structure.

[0004] Combining photovoltaic technology with curtain walls to form photovoltaic curtain walls has become an effective way to solve energy problems. However, compared with photovoltaic power generation devices on building roofs, the existing photovoltaic curtain wall system has a lower power generation efficiency per unit area, which easily blocks the view from indoor buildings to the outside. At the same time, it has low intelligence and variability and cannot be adjusted according to the real-time sun position and environmental conditions. In addition, the existing photovoltaic curtain wall system often has a single function and cannot intelligently switch the working mode to cope with different environmental conditions and improve the comprehensive energy efficiency performance of the building.

[0005] For the main lighting surface of a building, at certain times of the year, the sunlight incident into the building is not conducive to maintaining a good indoor light environment. It is usually manifested as a limited incident distance, resulting in uneven lighting in the building. Therefore, a multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection is first proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection, which can solve the problems of low power generation efficiency per unit area of ​​photovoltaic curtain walls, easy obstruction of indoor vision, inability to adjust according to real-time solar position and environmental conditions, and inability to intelligently switch working modes to cope with different environmental conditions to improve the comprehensive energy efficiency performance of the building.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection, the curtain wall system consists of a building, a user control module, a sensor module, a motion unit module, a solar module, a charge and discharge control module, and a main control module, and the user control module, the sensor module, the motion unit module, the solar module, and the charge and discharge control module are all connected to the main control module.

[0009] The sensor module is arranged at the same level as the solar module, and is used to monitor real-time meteorological data such as light and wind speed.

[0010] The building comprises a main body and an aluminum profile frame. A building structure layer is arranged on the main body of the building. A light-guiding ceiling layer fixed to the aluminum profile frame is arranged at the lower side of the building structure layer. The light inlet of the light-guiding ceiling layer is located at the lower side of the solar module. An electromagnetic fixing device is arranged on the upper part of the aluminum profile frame. A maintenance pedal flush with the main body floor slab of the building is arranged at the lower side of the aluminum profile frame.

[0011] Furthermore, the solar module includes a photovoltaic panel, which is located on one side of the building structure layer and flush with the outer side of the upper section of the aluminum profile frame, and the photovoltaic panel is located on the upper side of the light inlet of the light guide ceiling layer.

[0012] Furthermore, the motion unit module includes a mirror reflector device, which is arranged on the lower side of the light inlet of the light guide ceiling. The mirror reflector device can receive sunlight for photovoltaic panels to generate electricity or adjust the indoor light environment. When the mirror reflector device is folded, it is stabilized by an electromagnetic fixing device.

[0013] Furthermore, the mirror reflector device includes a mirror aluminum plate, an adjustable supporting structure, a structural connecting plate, a short-stroke electric slide and a long-stroke electric slide.

[0014] The structural connecting plate rotates with the circular tube in the aluminum frame as the axis, the short-stroke electric slide is used to drive the movement of the adjustable supporting structure, the long-stroke electric slide is connected to the curtain wall frame inside the building main body, the long-stroke electric slide is used to drive the movement of the structural connecting plate, and each unit knuckle of the adjustable supporting structure is respectively connected to a mirror aluminum plate.

[0015] Furthermore, the adjustable supporting structure is divided into three joints, the structural connecting plate is driven to rotate by the long-stroke electric slide, the first joint is connected to the front shaft of the structural connecting plate, and can rotate around it under the drive of the short-stroke electric slide, the second joint is connected to the front shaft of the first joint and is passively driven to rotate by the connecting rod connected to the first joint, the third joint is connected to the front shaft of the second joint, and is passively driven to rotate by the connecting rod connected to the second joint, and all three joints can be connected to the mirror aluminum plate through connecting components to adjust the reflection shape of the mirror aluminum plate.

[0016] Furthermore, the sensor module includes an indoor illumination sensor, a wind sensor, a wind and snow sensor, and an outdoor light radiation sensor. The outdoor light radiation sensor is used to locate reflected outdoor light. The outdoor light radiation sensor is arranged at the upper and lower edges of the light inlet of the photovoltaic panel and the light guide ceiling. The outdoor light radiation sensor is used to monitor the indoor light environment.

[0017] Furthermore, the modes of the curtain wall system include photovoltaic power generation mode, indoor light guiding mode and hazard avoidance mode.

[0018] Furthermore, the change and switching of the mode is adjusted according to the position of the reflected sunlight projection by the mirror reflector device, so that the mode is switched to the photovoltaic power generation mode or the indoor light guiding mode.

[0019] The changes of the mirror reflector device in the photovoltaic power generation mode are calculated and programmed in advance based on the real-time solar azimuth and solar altitude angle of the building facade where the system is located, so as to ensure that the reflected sunlight is projected at the horizontal height where the photovoltaic panel is located to the greatest extent.

[0020] The change of the mirror reflector device under the indoor light guiding mode is pre-calculated and programmed according to the real-time solar azimuth and solar altitude angle of the building facade where the system is located, so as to ensure that the reflected sunlight is projected to the maximum extent at the horizontal height of the light guiding ceiling light inlet.

[0021] Beneficial effects of the present invention:

[0022] 1. The curtain wall system of the present application is an intelligent system that can switch between multiple working modes, and the basis for the system switching mode is the overall energy consumption performance of the system and the building parts involved and the real-time climate environment in which it is located, which solves the problem that the existing photovoltaic curtain wall has a single function, a low degree of intelligence and is separated from the main operating system of the building;

[0023] 2. The curtain wall system of the present application utilizes the mirror reflection of sunlight to flexibly control the utilization mode of sunlight received by the building facade, that is, the reflected sunlight can be projected at the photovoltaic power generation port or the light guide ceiling light inlet, for use in the photovoltaic power generation mode and the indoor light guide mode, respectively, to achieve the precise utilization of sunlight received by the building facade, thereby improving the utilization efficiency of sunlight;

[0024] 3. The mirror reflector device in the curtain wall system of the present application is in the form of a continuous multi-segment surface similar to a finger structure, which can focus the reflected sunlight to a certain extent, reduce the size of the light spot projected on the facade, and thus reduce the area of ​​the required photovoltaic panels, thereby improving the power generation efficiency of the photovoltaic panels per unit area;

[0025] 4. The curtain wall system of the present application uses sunshine simulation software to simulate the sunshine conditions at the location of the system, calculates in advance the optimal angle of the mirror reflector device in the photovoltaic power generation mode and the indoor light guiding mode, and programs the functional relationship between the optimal angle and the time in advance offline into the central control system of the system to control the real-time state of the mirror reflector device, thereby improving the controllability of the system to make real-time changes and adjustments according to the sunlight orientation at the location;

[0026] 5. The curtain wall system of this application does not set any components other than the glass curtain wall in the visual path of indoor users of the building, thus ensuring the overall transparency of the building facade and the user experience;

[0027] 6. The curtain wall system of this application is equipped with a risk avoidance mode to ensure the structural stability and safety of the system in extreme climatic environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the axonometric structure of the curtain wall system of the present invention.

[0030] Figure 2 is a schematic cross-sectional view of the curtain wall system of the present invention;

[0031] Figure 3 It is a flow chart of three types of modes of the curtain wall system of the present invention;

[0032] Figure 4 It is a schematic diagram of the framework structure of the curtain wall system of the present invention;

[0033] Figure 5 It is the operation flow chart of the curtain wall system of the present invention;

[0034] Figure 6 It is a vertical axonometric view of the photovoltaic power generation modal of the present invention;

[0035] Figure 7 It is an axonometric elevation view of the indoor light guide mode of the present invention;

[0036] Figure 8 It is the axonometric drawing of the risk avoidance modal elevation of the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Combination Figure 1-Figure 8 As shown, a multimodal photovoltaic energy-saving building facade curtain wall system using mirror reflection is used. The curtain wall system is divided into areas based on building layers. The curtain wall system of each unit span is composed of a building, a user control module, a sensor module, a motion unit module, a solar module, a charge and discharge control module, and a main control module. The user control module, the sensor module, the motion unit module, the solar module, and the charge and discharge control module are all connected to the main control module. The sensor module is set at the same horizontal height as the solar module. The sensor module is used to monitor real-time meteorological data such as light and wind speed.

[0039] The building includes a building body 1 and an aluminum profile frame 2. The building body 1 is provided with a building structure layer. The lower side of the building structure layer is provided with a light guide ceiling layer 2.2 fixed to the aluminum profile frame 2. The light inlet of the light guide ceiling layer 2.2 is located at the lower side of the solar module. An electromagnetic fixing device is provided on the upper part of the aluminum profile frame 2. The lower side of the aluminum profile frame 2 is provided with a maintenance pedal (maintenance platform) 2.5 flush with the floor slab of the building body 1. The maintenance pedal is used for maintenance personnel.

[0040] The user control module includes a server, the receiving end of the server is the main control module, and the sending end of the server is a mobile phone, a computer, and a monitor.

[0041] The solar module includes a photovoltaic panel 2.1, which is located on one side of the building structure layer and flush with the outer side of the upper section of the aluminum profile frame 2. The photovoltaic panel 2.1 is located on the upper side of the light inlet of the light guide ceiling layer 2.2.

[0042] The motion unit module includes a mirror reflector device 3, which is arranged on the lower side of the light inlet of the light guide ceiling layer 2.2. The mirror reflector device 3 can receive sunlight for the photovoltaic panel 2.1 to generate electricity or adjust the indoor light environment. When the mirror reflector device 3 is folded, it is stabilized by an electromagnetic fixing device.

[0043] The mirror reflector device 3 includes a mirror aluminum plate 3.1, an adjustable support structure (first-level adjustable structure) 3.2, a structural connecting plate (second-level adjustable structure) 3.3, a short-stroke electric slide and a long-stroke electric slide. The adjustable support structure 3.2 is shaped like a finger. The structural connecting plate 3.3 rotates around the round tube in the aluminum frame. The short-stroke electric slide is used to drive the adjustable support structure 3.2 to move. The long-stroke electric slide is connected to the internal curtain wall frame of the building body 1. The long-stroke electric slide is used to drive the structural connecting plate 3.3 to move. The structural connecting plate 3.3 is driven to rotate by the long-stroke electric slide. Each unit finger joint of the adjustable support structure 3.2 is respectively connected to a mirror aluminum plate 3.1.

[0044] The adjustable supporting structure 3.2 is divided into three joints. The first joint is connected to the front shaft of the structural connecting plate 3.3 and can rotate around it under the drive of the short-stroke electric slide. The second joint is connected to the front shaft of the first joint and is passively driven to rotate by the connecting rod connected to the first joint. The third joint is connected to the front shaft of the second joint and is passively driven to rotate by the connecting rod connected to the second joint. All three joints can be connected to the mirror aluminum plate 3.1 through connecting components to adjust the reflection shape of the mirror aluminum plate 3.1.

[0045] The charge and discharge control module is used to supply power to the solar module, the main control module, the sensor module and the battery. The battery and the charge and discharge control module can be charged.

[0046] The sensor module includes an indoor illumination sensor, a wind sensor, a wind and snow sensor, and an outdoor light radiation sensor. The outdoor light radiation sensor is used to locate the reflected outdoor light. The outdoor light radiation sensor is arranged at the upper and lower edges of the light inlet of the photovoltaic panel 2.1 and the light guide ceiling layer 2.2. The outdoor light radiation sensor is used to monitor the indoor light environment.

[0047] The main control module includes a central control system, which receives the position information of sunlight reflected by the mirror reflector device 3 from the light intensity sensor, and then transmits the signal to the mirror reflector device 3 for fine-tuning the shape to ensure that the reflected sunlight is located at the light inlet of the photovoltaic panel 2.1 or the light guide ceiling layer 2.2.

[0048] The structural change capability of the mirror reflector device 3 and the sensor module device enable its mode to be changed and switched according to the real-time outdoor weather and indoor illumination conditions. The modes include photovoltaic power generation mode, indoor light guiding mode and risk avoidance mode. The change and switching of the mode is based on the overall energy consumption prediction of maintaining the indoor light environment standard of the building and whether it can work safely. The mirror reflector device 3 can adjust the position of the reflected sunlight projection to switch the system to photovoltaic power generation mode or indoor light guiding mode.

[0049] The change of the mirror reflector device 3 in the photovoltaic power generation mode is pre-calculated and programmed according to the real-time solar azimuth and solar altitude angle of the building facade where the system is located, so as to ensure that the reflected sunlight is projected at the horizontal height where the photovoltaic panel 2.1 is located to the greatest extent;

[0050] The change of the mirror reflector device 3 in the indoor light guiding mode is pre-calculated and programmed according to the real-time solar azimuth and solar altitude angle of the building facade where the system is located, so as to ensure that the reflected sunlight is projected at the horizontal height of the light guiding ceiling light inlet to the greatest extent.

[0051] The user control module calculation programming simulates the real-time sunshine conditions of the system environment in a year in advance in the sunshine simulation software according to the longitude and latitude and orientation of the building facade where the system is located, and calculates the optimal angle of the mirror reflection panel device 3 that can accurately project the reflected sunlight on the photovoltaic panel 2.1 or the light guide ceiling 2.2 light inlet based on the real-time sunshine conditions, and programs the functional relationship between the optimal angle and the time in advance offline into the central control system of the system to control the real-time state of the mirror reflection panel device 3 in the photovoltaic power generation and indoor light guiding modes, wherein the angle includes the rotation angle of an adjustable supporting structure (first-level adjustable structure) 3.2 and a structural connecting plate (second-level adjustable structure) 3.3.

[0052] The basis for the curtain wall system to switch between the photovoltaic power generation mode and the indoor light guiding mode is to monitor whether the photovoltaic power generation power corresponding to the real-time light intensity is sufficient to be provided to the indoor lighting equipment of the building to maintain the illumination of the indoor horizontal working surface at the corresponding standard, that is, when the system is in the photovoltaic power generation mode, when the power generation power corresponding to the real-time light intensity is sufficient to maintain the illumination of the indoor horizontal working surface at the corresponding standard, the system will maintain the photovoltaic power generation mode and continue to monitor the real-time light intensity of the photovoltaic panel 2.1 in real time; when the electric energy generated by the system in the photovoltaic power generation mode is insufficient to maintain the illumination of the indoor horizontal working surface at the corresponding standard, the system will switch to the indoor light guiding mode and continue to monitor the real-time light intensity in real time.

[0053] When the curtain wall system is in a safe working state, it will monitor the power generation power and sunlight intensity of the photovoltaic panel 2.1 in real time, so as to switch between the photovoltaic power generation mode or the indoor light guiding mode according to the comprehensive energy efficiency performance of the system and the building; and when the curtain wall system is in the photovoltaic power generation mode or the indoor light guiding mode, the system will be programmed offline in advance into the central control system of the system according to the functional relationship between the optimal angle and the time calculated in the sunshine simulation software to ensure that the system can stably reflect sunlight to the specified position in these two modes.

[0054] When the meteorological sensor of the curtain wall system detects that the environment has weather conditions such as rain, snowfall, strong wind, hail, etc. that exceed the system's safe working requirements, the curtain wall system will enter the risk avoidance mode, that is, the mirror reflector device 3 will be retracted and fixed by the electromagnetic fixing device to ensure the overall stability and safety of the system. When it is monitored that the weather conditions in the system's environment meet the safe working requirements, the system will resume working status and change and switch between the photovoltaic power generation mode and the indoor light guiding mode according to the real-time monitored sunlight conditions.

[0055] The risk avoidance mode set in the curtain wall system ensures that when the system is in a harsh environment and its components are easily damaged by environmental conditions, it can enter a risk avoidance state to ensure the overall stability and safety of the system.

[0056] When the system fails or the mirror aluminum plate needs to be cleaned or updated, the maintenance or cleaning personnel can stand on the pedal to work.

[0057] The maintenance pedal 2.5 provided for maintenance of the curtain wall system provides convenience for cleaning and maintenance of the system, which is beneficial to the long-term and efficient use of the system.

[0058] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection, It is characterized in that The curtain wall system is composed of a building, a user control module, a sensor module, a motion unit module, a solar module, a charge and discharge control module, and a main control module, and the user control module, the sensor module, the motion unit module, the solar module, and the charge and discharge control module are all connected to the main control module; The sensor module is arranged at the same level as the solar module, and the sensor module is used to monitor real-time meteorological data such as light and wind speed; The building comprises a building body (1) and an aluminum profile frame (2); a building structure layer is provided on the building body (1); a light guide ceiling layer (2.2) fixed to the aluminum profile frame (2) is provided on the lower side of the building structure layer; a light inlet of the light guide ceiling layer (2.2) is located on the lower side of the solar module; an electromagnetic fixing device is provided on the upper part of the aluminum profile frame (2); and a maintenance pedal (2.5) flush with the floor slab of the building body (1) is provided on the lower side of the aluminum profile frame (2); The solar module comprises a photovoltaic panel (2.1), the photovoltaic panel (2.1) is located on one side of the building structure layer and is flush with the outer side of the upper section of the aluminum profile frame (2), and the photovoltaic panel (2.1) is located on the upper side of the light inlet of the light guide ceiling layer (2.2); The motion unit module comprises a mirror reflection plate device (3), the mirror reflection plate device (3) is arranged on the lower side of the light inlet of the light guide ceiling layer (2.2), the mirror reflection plate device (3) can receive sunlight for the photovoltaic panel (2.1) to generate electricity or adjust the indoor light environment, and the mirror reflection plate device (3) is stabilized by an electromagnetic fixing device when it is folded; The mirror reflection plate device (3) comprises a mirror aluminum plate (3.1), an adjustable support structure (3.2), a structural connection plate (3.3), a short-stroke electric slide and a long-stroke electric slide; The structural connection plate (3.3) rotates with the circular tube in the aluminum frame as the axis, the short-stroke electric slide is used to drive the adjustable support structure (3.2) to move, the long-stroke electric slide is connected to the internal curtain wall frame of the building body (1), the long-stroke electric slide is used to drive the structural connection plate (3.3) to move, and each unit finger joint of the adjustable support structure (3.2) is respectively connected to a mirror aluminum plate (3.1); The modes of the curtain wall system include photovoltaic power generation mode, indoor light guiding mode and risk avoidance mode.

2. A multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection according to claim 1, It is characterized in that The adjustable support structure (3.2) is divided into three finger joints, the structural connecting plate (3.3) is driven to rotate by a long-stroke electric slide, the first finger joint is connected to the front shaft of the structural connecting plate (3.3) and can rotate around it under the drive of the short-stroke electric slide, the second finger joint is connected to the front shaft of the first finger joint and is passively driven to rotate by the connecting rod connected to the first finger joint, the third finger joint is connected to the front shaft of the second finger joint and is passively driven to rotate by the connecting rod connected to the second finger joint, and all three finger joints can be connected to the mirror aluminum plate (3.1) through a connecting component to adjust the reflection shape of the mirror aluminum plate (3.1).

3. A multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection according to claim 1, It is characterized in that The sensor module comprises an indoor illumination sensor, a wind sensor, a wind and snow sensor and an outdoor light radiation sensor. The outdoor light radiation sensor is used to locate reflected outdoor light. The outdoor light radiation sensor is arranged at the upper and lower edges of the light inlet of the photovoltaic panel (2.1) and the light guide ceiling layer (2.2). The outdoor light radiation sensor is used to monitor the indoor light environment.

4. A multi-modal photovoltaic energy-saving building facade curtain wall system using mirror reflection according to claim 3, It is characterized in that The change and switching of the mode adjusts the position of the reflected sunlight according to the mirror reflection plate device (3), so that the mode is switched to the photovoltaic power generation mode or the indoor light guiding mode; The change of the mirror reflector device (3) in the photovoltaic power generation mode is pre-calculated and programmed according to the real-time solar azimuth and solar altitude angle of the building facade where the system is located, so as to ensure that the reflected sunlight is projected to the maximum extent at the horizontal height where the photovoltaic panel (2.1) is located; The change of the mirror reflector device (3) in the indoor light guiding mode is calculated and programmed in advance according to the real-time solar azimuth and solar altitude angle of the building facade where the system is located, so as to ensure that the reflected sunlight is projected to the greatest extent at the horizontal height of the light guiding ceiling light inlet.

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