Concentrating photovoltaic curtain wall

Abstract

The utility model provides a concentrating photovoltaic curtain wall which is characterized in that a concentrating concave lens (2) is arranged in side surface concentrating packaging glass (1) on the light facing side, top packaging glass (3) is arranged at the top, a transverse photovoltaic battery component (4) is arranged below the top packaging glass (3), the upper layer, the lower layer and the inner side of the transverse photovoltaic battery component (4) and the concentrating concave lens (2) form concentrating cavities (5), and a heat exchange cavity (9) is arranged between the upper concentrating cavity (5) and the lower concentrating cavity (5). The longitudinal photovoltaic cell assembly (4) is fixed on an outer steel framework supporting body (11) and an inner supporting body (6) through fasteners, an interlayer (8) with channel grooves (12) is arranged in the middle of the longitudinal photovoltaic cell assembly (4), the fasteners of the longitudinal photovoltaic cell assembly (4) and the inner supporting body (6) form a heat exchange body channel (7), and a heat exchange body is divided into an upper heat exchange body layer and a lower heat exchange body layer by the interlayer (8) after entering a heat exchange body (9) through an inlet and outlet (10). And the water flows out of the concentrating photovoltaic curtain wall through a heat exchange body inlet / outlet (10).

Description

Technical Field

[0001] The utility model relates to a photovoltaic curtain wall, in particular to a concentrated photovoltaic curtain wall. Background Art

[0002] In urban buildings, new requirements are put forward for photovoltaic power generation, and power generation systems with higher power generation efficiency and building functions are needed. BIPV power generation systems that can meet these requirements have attracted attention. The utility model invents a photovoltaic curtain wall with a focusing function. This focusing photovoltaic curtain wall with good power generation efficiency and building wall function can be used to form building walls such as office buildings, residential buildings, railway stations or airport waiting rooms, making the walls become green power generation functions and beautiful buildings. Summary of the invention

[0003] In order to achieve the purpose of the utility model, the utility model provides a concentrated photovoltaic curtain wall, characterized in that the side concentrated encapsulation glass (1) on the light-facing side of the concentrated photovoltaic curtain wall has a concentrated concave lens (2), and the top of the concentrated photovoltaic curtain wall has a top encapsulation glass (3). Below the top encapsulation glass (3), there is a transverse photovoltaic cell assembly (4). The upper and lower layers of the transverse photovoltaic cell assembly (4) and the longitudinal photovoltaic cell assembly (4) located on the inner side together with the concentrated concave lens (2) constitute a concentrated cavity (5). There is a heat exchange cavity (9) between the upper and lower concentrated cavities (5). The heat exchange cavity (9) is fixed to the outer steel frame support body (11) and the inner support body (6) by fasteners. The upper layer, the bottom layer and the left and right sides of the heat exchange cavity (9) are all composed of photovoltaic cell assemblies (4) and their fasteners. There is a partition (8) with a channel partition groove (12) in the middle. The longitudinal photovoltaic cell assembly (4) and its fasteners and the inner support body (6) constitute a heat exchange body channel (7). The heat exchange body passes through the channel (7) through the heat exchange. After entering the heat exchange chamber (9) through the heat exchanger inlet and outlet grooves (10), the heat exchanger is separated into two layers of heat exchangers, one above and one below, by the partition (8). The two layers of heat exchangers are connected by a channel partition groove (12) located in the partition (8) near the outer steel frame support body (11), and flow out of the concentrated photovoltaic curtain wall through the heat exchanger inlet and outlet (10); the photovoltaic cell assembly (4) and its fasteners are arranged on the upper, lower and inner sides of the concentrated cavity (5), and transparent glass is arranged on the light-facing side. The concave lens (2) is composed of a focusing lens (2), and the back of the photovoltaic film in the photovoltaic cell assembly (4) is sealed with the heat exchange chamber (9), so that there is no leakage when the back of the photovoltaic film is in direct contact with the heat exchange body; the partition (8) with the channel partition groove (12) in the middle of the heat exchange chamber (9) separates the heat exchange body into two layers connected to each other from top to bottom. The heat exchange body directly contacts the photovoltaic cell assembly (4) through the back of the photovoltaic cell assembly (4) to exchange heat, so that the photovoltaic cell assembly (4) is basically kept at a constant temperature. The beneficial effects of this are:

[0004] 1. The photovoltaic curtain wall provided by the utility model has good power generation efficiency. First of all, the photovoltaic power generation cell area is large. Compared with the traditional photovoltaic curtain wall, each focusing cavity 5 as the photovoltaic power generation body has two horizontally installed photovoltaic cell assemblies 4 in addition to the three vertically installed photovoltaic cell assemblies 4 on the left, right and back, so that the photovoltaic power generation surface of the focusing cavity is improved; secondly, the focusing cavity 5 has a "light trapping ability". The light-facing surface of the focusing cavity 5 has a focusing concave lens 2, which can make the incident light obtain a certain focusing effect, and reflect the light reflected from the focusing cavity by the photovoltaic cell assembly 4 back to the focusing cavity in the form of focusing, so as to optimize the transmission path of the incident light and help improve the light utilization efficiency of the photovoltaic cell assembly 4; and the heat exchange cavity 9 located between the focusing cavities 5 can control the temperature of the photovoltaic cell assembly 4, and the heat exchange body directly contacts the back of the photovoltaic cell assembly 4 first, so the heat exchange effect is good. Even in the hot summer, the temperature of the photovoltaic cell assembly 4 will not be too high, which is conducive to improving the power generation efficiency of the photovoltaic cell.

[0005] 2. The photovoltaic curtain wall provided by the utility model has the function of a wall building. First of all, the photovoltaic curtain wall provided by the utility model has good structural strength. The metal frame composed of the outer steel frame support body 11 has strong mechanical strength, which can ensure the structural stability of the side focusing encapsulation glass 1 and withstand strong winds. In addition, the four corners of the focusing cavity can use a whole high-strength metal fastener, and even these angle metal fasteners on the entire straight line can use the whole structure to bear the weight together with the outer steel frame support body 11 and the inner support body (6). This whole structure of high-strength fasteners has good mechanical strength, which can improve the supporting capacity of the building, enhance the anti-extrusion and anti-earthquake capabilities, and enhance the safety of the building; in addition, there is a heat exchange cavity 9 adjacent to the focusing cavity. By adjusting the temperature of the heat exchange body therein, the system can have a suitable temperature in both scorching sun and snowy weather, and can be used in extreme temperatures. Secondly, this concentrated photovoltaic curtain wall composed of steel structure and glass has good structural strength and can be used as a wall, and together with the photovoltaic roof, it forms a photovoltaic house. In this way, the rooftop building is no longer a house that is cold in winter and hot in summer and prone to water leakage, but a completely watertight top-floor house with constant temperature and green power generation functions and good living conditions, so that the top-floor house has good performance and increases the applicable area of ​​the building. In addition, the heat exchange body after heat exchange is connected to the building's comprehensive thermal energy utilization system, which is conducive to improving the comprehensive thermal energy utilization effect of the building.

[0006] 3. The photovoltaic curtain wall provided by the utility model has the ability to mitigate chromatic aberration. The concave condenser 2 located in the side concentrating encapsulating glass 1 has a reflective focusing effect, which can reflect most of the light emitted from the cavity to the outside of the wall back into the concentrating cavity, thus reducing the clarity of the cavity from the outside of the wall, and basically cannot see the surface of the photovoltaic components on the five surfaces in the cavity. Therefore, even if the photovoltaic components in the wall have chromatic aberration in long-term use, due to the reflection of the concave lens, the chromatic aberration cannot be seen clearly outside the wall, making the appearance of the entire cavity basically neat. In addition to the reflective focusing effect of the concave lens, the reason for the chromatic aberration mitigation of the concentrating cavity is also related to the structure of the concentrating cavity. From the perspective of the concentrating cavity structure, the five photovoltaic components in the cavity are hidden in the wall and cannot be directly seen by the human eye. Even the photovoltaic component on the rear side that may produce a straight line of vision with the human eye, from the outside of the cavity to the surface of the photovoltaic component, the light beam needs to pass through a layer of condenser and a section of concentrating cavity space. The complex optical path in this process helps to mix light of different wavelengths, thereby reducing color differences and having the effect of mitigating chromatic aberration. Therefore, the concentrating photovoltaic cavity provided by this patent has the ability to reduce chromatic aberration, and the effect of reducing chromatic aberration is independent of the type of photovoltaic modules used. There is no need to use perovskite photovoltaic modules or cadmium telluride photovoltaic modules whose main materials are toxic but whose chromatic aberration is not obvious. Silicon-based photovoltaic modules that are more prone to chromatic aberration but are green and environmentally friendly can also be used, thus forming a green, environmentally friendly and neat-looking photovoltaic curtain wall.

[0007] 4. The photovoltaic curtain wall provided by the utility model has a good anti-static function. The main material of the outer steel frame and the inner support body is metal, which has a certain conductivity. It can ground the static electricity accumulation caused by the changes in the electrical output parameters (including output voltage, current, electric power, etc.) of the system due to changes in light intensity and other reasons through the lightning rod composed of the steel bars of the building, and lead the static electricity accumulated in the system during operation into the ground to protect the safety of the system.

[0008] 5. The constant temperature wall composed of the photovoltaic curtain wall provided by the utility model has good ornamental value. The photovoltaic curtain wall composed of the main body of the wall is a glass structure. The main building is no longer a cement wall, but a constant temperature "crystal palace" that can generate green electricity, which is suitable for living and working. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Attached Figure 1 This is a side view of a concentrated photovoltaic curtain wall, with a side viewing angle of 90°. In the figure, 1 is the side encapsulation glass; 2 is the concave focusing lens; 3 is the top encapsulation glass; 4 is the photovoltaic cell assembly; 5 is the focusing cavity; 6 is the inner support body; 7 is the heat exchange body channel; 8 is the channel interlayer; 9 is the heat exchange cavity; 10 is the heat exchange body inlet and outlet grooves; 11 is the outer steel frame support body; 12 is the channel interlayer groove. Figure 2 It is a heat exchange chamber structure. Figure 1The same numbered notes are in the attached Figure 1 As has been explained in the specification, 13 is a lateral photovoltaic cell assembly installation box; Figure 3 This is the front view of this concentrated photovoltaic curtain wall. Its main body is a steel structure. Figure 1 and attached Figure 2 Already explained in. DETAILED DESCRIPTION

[0010] The specific implementation of the present utility model can be described by the following embodiments.

[0011] Example 1: A concentrated photovoltaic curtain wall for constructing a photovoltaic house on the top floor of a small residential villa building

[0012] For a top floor area of ​​50×10m 2 When a small villa building is built into a photovoltaic house on its top floor, the concentrating photovoltaic curtain wall invented by the utility model can be used on the top wall on the south side. The size of the constructed concentrating photovoltaic curtain wall system is 50×0.5×10m 3 The steel frame used is made of aluminum alloy, and the size of each longitudinal aluminum alloy is 50×50×10000mm 3 , the horizontal aluminum alloy size is 50000×50×50mm 3 The wall thickness is 10mm. The whole curtain wall uses 51 longitudinal aluminum alloy strips and 10 transverse aluminum alloy strips as support. The front view is shown in the attached figure. Figure 3 As shown; attached Figure 2 The dimensions of the heat exchange chamber 9 shown are 940×460×6 mm 3 , fastened to the steel frame and the inner support 6, made of aluminum alloy, the upper and lower bottoms are both 940×460×1mm 3 The lateral photovoltaic cell assembly installation box 13 has a wall thickness of 0.5 mm and is used to install the lateral photovoltaic cell assembly 4. The outer side of the box near the inner support body 6 has a size of 940×10×5 mm. 3 The groove is used to install the longitudinal photovoltaic cell assembly 4, and there is an attachment between the groove and the inner support body 6. Figure 2 The dimensions shown are 840×40×5mm 3 The heat exchanger inlet and outlet grooves 10 have an upper bottom for the heat exchanger inlet and a lower bottom for the outlet. The headquarters in the middle of the heat exchange chamber 9 has a layer of 940×350×3mm 3 The channel partition 8 has a size of 840×40×5mm on one side of the channel partition 8 close to the outer steel frame support 12. 3The channel interlayer groove 12 is a side encapsulation glass 1, the size of the focusing concave lens 2 is 960×960×10mm, the focal length is 46.31mm, the radius of curvature is 55.9mm, the thinnest part is 2mm, there are 9×50 in total, and the material is pure quartz white glass with a transmittance higher than 90%; the focusing cavity 5 has a size of 940×460×940mm 3 The size of its lateral photovoltaic cell module is 940×460×35mm 3 , is JinkoSolar's Cheetah HC 60MTopCon monocrystalline silicon cell, with a power generation efficiency of 22.5% and a vertical panel size of 940×940×35mm 3 The model is the same as the horizontal photovoltaic cell module. The inner support body 6 is 50×0.06×10m 3 PR / aluminum alloy plastic steel plate. The heat exchanger uses central air conditioning gas, so the photovoltaic curtain wall can obtain a good temperature and obtain good photovoltaic power generation in the hot summer. At the same time, the photovoltaic house has good livability, making the top floor a suitable house for living in winter and cool in summer, increasing the effective use area of ​​the villa. Windows can be opened in appropriate places according to needs, and the inner support body has openable doors in appropriate places to facilitate the installation and maintenance of the photovoltaic curtain wall.

[0013] Example 2: A concentrated photovoltaic curtain wall for building a photovoltaic house on the roof of a residential area

[0014] For a top floor area of ​​15×10m 2 When the top floor of a small villa building is constructed into a photovoltaic house, the concentrating photovoltaic curtain wall invented by the utility model can be used on the top wall on the south side. The size of the constructed concentrating photovoltaic curtain wall system is 15×0.5×10m 3 The steel frame used is made of stainless steel, and the size of each longitudinal stainless steel is 50×50×15000mm 3 Hollow steel, aluminum alloy transverse dimensions 50000×50×50mm 3 The wall thickness is 10mm. The entire curtain wall uses 51 longitudinal steel bars and 3 transverse stainless steel bars. The front view is shown in the attached figure. Figure 3 As shown, each is 940×940m 2 The vertical grid; Figure 2 The dimensions of the heat exchange chamber 9 shown are 940×460×6 mm 3 , fastened to the steel frame and the inner support 6, made of aluminum alloy, with the upper and lower bottoms having dimensions of 940×460×35mm 3The transverse photovoltaic cell assembly installation box 13 has a wall thickness of 5 mm and is used to install the transverse photovoltaic cell assembly 4. There is a 940×10×5 mm 3 The groove is used to install the longitudinal photovoltaic cell assembly 4, and there is a groove with a size of 840×40×5mm between the groove and the inner support body 6. 3 The heat exchanger inlet and outlet grooves 10 have an upper bottom for the heat exchanger inlet and a lower bottom for the outlet. The headquarters in the middle of the heat exchange chamber 9 has a layer of 940×350×3mm 3 The channel partition 8 has a size of 840×40×5mm on one side of the channel partition 8 close to the outer steel frame support 12. 3 The channel interlayer groove 13; the side encapsulation glass 12 is the outer wall of the focusing concave lens 2, the focusing concave lens has a size of 960×960×10mm, a focal length of 46.31mm, a radius of curvature of 55.9mm, and a thinnest part of 2mm. The material is pure quartz white glass with a transmittance higher than 90%; the focusing cavity 5 has a size of 940×460×940mm 3 The size of its lateral photovoltaic cell module is 940×460×35mm 3 , is JinkoSolar's JKM260P polycrystalline silicon cell, with a power generation efficiency of 15.89% and a vertical panel size of 940×940×35mm 3 The model is the same as the horizontal photovoltaic cell assembly. The sealing layer between the back of the photovoltaic cell assembly in the photovoltaic cell assembly 4 and the heat exchange cavity 9 prevents leakage when the back of the photovoltaic film is in direct contact with the heat exchange body. The inner support body 6 is 15×0.06×10m 3 PR plastic steel plate. The heat exchanger uses tap water, so the photovoltaic curtain wall can obtain a lower temperature, and can also obtain good photovoltaic power generation in the hot summer. At the same time, the photovoltaic house has good habitability, making the top floor a house suitable for living with a certain constant temperature performance, which increases the effective use area of ​​the house. According to needs, windows can be opened in appropriate places, and the inner support body has openable doors in appropriate places to facilitate the installation and maintenance of the photovoltaic curtain wall.

Claims

1. A concentrated photovoltaic curtain wall, characterized by The side focusing encapsulation glass (1) on the light-facing side of the focusing photovoltaic curtain wall has a focusing concave lens (2), and the top of the side focusing encapsulation glass (3) is provided. Below the top encapsulation glass (3) is a transverse photovoltaic cell assembly (4). The upper and lower layers of the transverse photovoltaic cell assembly (4) and the longitudinal photovoltaic cell assembly (4) located on the inner side together with the focusing concave lens (2) form a focusing cavity (5). A heat exchange cavity (9) is provided between the upper and lower focusing cavities (5). The heat exchange cavity (9) is fixed to the outer steel frame support body (11) and the inner support body (6) by fasteners. The upper layer, the bottom layer and the left and right sides of the heat exchange cavity (9) are provided with photovoltaic cell assemblies. The heat exchanger is composed of a heat exchanger (4) and its fasteners, with a partition (8) having a channel groove (12) in the middle. The longitudinal photovoltaic cell assembly (4) and its fasteners and the inner support body (6) form a heat exchange body channel (7). After the heat exchange body enters the heat exchange chamber (9) through the channel (7) and the heat exchange body inlet and outlet (10) of the heat exchange chamber (9), it is separated into two layers of heat exchange bodies, the upper and lower layers, by the partition (8). The two layers of heat exchange bodies are connected by the channel partition groove (12) located in the partition (8) on the side close to the outer steel frame support body (11), and flow out of the concentrated photovoltaic curtain wall through the heat exchange body inlet and outlet (10).

2. A concentrated photovoltaic curtain wall according to claim 1, characterized in that The photovoltaic cell assembly (4) and its fasteners are arranged on the upper, lower and inner sides of the focusing cavity (5), and a focusing concave lens (2) composed of transparent glass is arranged on the light-facing side. The back side of the photovoltaic film in the photovoltaic cell assembly (4) is sealed from the heat exchange cavity (9), so that there is no leakage of electricity when the back side of the photovoltaic film is in direct contact with the heat exchange body.

3. A concentrated photovoltaic curtain wall according to claim 1, characterized in that The partition (8) with the channel groove (12) in the middle of the heat exchange chamber (9) divides the heat exchange body into two layers connected to each other from top to bottom. The heat exchange body directly contacts the photovoltaic cell assembly (4) through the back side of the photovoltaic cell assembly (4) to exchange heat, so that the photovoltaic cell assembly (4) is basically kept at a constant temperature.

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