Photovoltaic building system

Abstract

The utility model discloses a photovoltaic building system, and relates to the technical field of photovoltaic buildings, the photovoltaic building system comprises a building group area, the building group area comprises a plurality of photovoltaic buildings; the building ancillary facility at least comprises a parking lot; a photovoltaic assembly is arranged on the top of the photovoltaic building and at least used for providing electric energy for the photovoltaic building. At least part of the outer wall surface of the photovoltaic building is made of a photovoltaic building material, and the photovoltaic building material is at least a crystal silicon wafer; the photovoltaic building material is at least used for providing electric energy for the parking lot. The photovoltaic building not only can generate electric energy for equipment in the photovoltaic building, but also can provide electric energy for equipment in the parking lot, the position of the photovoltaic building material arranged on the outer wall surface of the photovoltaic building is always higher than that of the parking lot, the obtained light radiation quantity is higher, more sufficient electric quantity can be provided for the parking lot, and the parking lot is more convenient to use. And the application of the photovoltaic building electric energy is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of photovoltaic building, and particularly relates to a photovoltaic building system. BACKGROUND

[0002] Currently, when designing an integrated photovoltaic building group area, the relationship between the building position and the radiation amount in the area and the relationship between the photovoltaic building and other building facilities are not considered, so that the photovoltaic components and the photovoltaic building material on the photovoltaic building are not well arranged, thereby resulting in a low conversion rate of the photovoltaic building to electric energy, and the electric energy generated by the photovoltaic building is single in use and not fully utilized. CONTENT OF THE INVENTION

[0003] The embodiment of the application provides a photovoltaic building system, and solves the problem that the buildings are mutually blocked in the prior art, thereby resulting in unstable power generation efficiency of the photovoltaic components.

[0004] To achieve the above object, the application adopts the following technical scheme:

[0005] In a first aspect, a photovoltaic building system is provided, and the system comprises: a building group area, wherein the building group area comprises a plurality of photovoltaic buildings.

[0006] A building auxiliary facility is arranged in the building group area, and the building auxiliary facility at least comprises a parking lot.

[0007] The photovoltaic building is provided with a photovoltaic component arranged on the top of the photovoltaic building, and the photovoltaic component is at least used for providing electric energy for the photovoltaic building.

[0008] At least part of the outer wall surface of the photovoltaic building is a photovoltaic building material, and the photovoltaic building material is at least a crystalline silicon wafer; and the photovoltaic building material is at least used for providing electric energy for the parking lot.

[0009] In another embodiment of the first aspect, the building auxiliary facility is arranged in the area with the lowest light radiation in the building group area.

[0010] In another embodiment of the first aspect, a plurality of charging piles are arranged in the area with the lowest light radiation in the parking lot, and the charging piles are used for supplying electric energy for charging equipment.

[0011] In another embodiment of the first aspect, the spacing between each building in the building group area is greater than 30 m.

[0012] In another embodiment of the first aspect, the outer wall surface at least comprises a wall body, a door and a window.

[0013] In another embodiment of the first aspect, the crystalline silicon wafer is arranged in at least part of the area of the outer wall surface with the highest light radiation of the photovoltaic building.

[0014] In another embodiment of the first aspect, the outer wall of the photovoltaic building is at least partially provided with a layered material composed of a combination of glass substrate and crystalline silicon sheet material; the crystalline silicon sheet is arranged at the upper portion of the outer wall, and the layered material is arranged at the lower portion of the outer wall.

[0015] In another embodiment of the first aspect, the crystalline silicon sheet comprises at least one of the following: single-crystal silicon sheet and polycrystalline silicon sheet; the single-crystal silicon sheet is arranged at the upper portion of the outer wall, and the crystalline silicon sheet material in the layered material is polycrystalline silicon sheet.

[0016] In another embodiment of the first aspect, the layered material is composed of five layers.

[0017] In another embodiment of the first aspect, the angle a between the photovoltaic component at the top of the photovoltaic building and the ground plane is a≤25°; and the angle β between the photovoltaic building material and the ground plane is 70°≤β≤90°.

[0018] After the above technical solution, the present application has the following beneficial effects compared with the prior art: the present application provides a plurality of photovoltaic buildings and building auxiliary facilities in the building group area, and the building auxiliary facilities at least include a parking lot. The photovoltaic building is provided with a photovoltaic component at the top of the building, which can be used to provide electric energy for the photovoltaic building. At least part of the outer wall of the photovoltaic building is provided with a photovoltaic building material, which can be used to provide electric energy for the parking lot. Specifically, the present application provides photovoltaic components at the top and outer wall of the photovoltaic building, which can be used to generate electric energy, thereby increasing the photovoltaic coverage of the photovoltaic building and improving the production of electric energy. Further, the photovoltaic building of the present application can not only generate electric energy for the equipment in the photovoltaic building, but also provide electric energy for the equipment (such as charging piles) in the parking lot. Since the parking lot is often arranged on the ground or below, it is easy to be blocked by buildings and receives less light radiation, which results in insufficient electric energy. However, the photovoltaic building material arranged on the outer wall of the photovoltaic building is often higher than the parking lot, and can obtain more light radiation, thereby providing more sufficient electric energy for the parking lot and increasing the application of electric energy of the photovoltaic building. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0021] Figure 1 is a schematic diagram of a photovoltaic building system provided by an embodiment of the present application;

[0022] Figure 2 is a schematic diagram of a building layout scheme provided by an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or modules does not have to be limited to those steps or modules clearly listed, but can include other steps or modules not clearly listed or inherent to these processes, methods, products or devices.

[0025] Under the global energy accelerating towards low-carbon and zero-carbon trend, solar energy has gradually become the main force of energy to cope with climate change and support economic and social development. Solar photovoltaic building integration is an inevitable phenomenon to vigorously promote the development of photovoltaic power generation in multiple scenarios, which is conducive to better solving the problems of high building energy consumption and large carbon emissions at the present stage.

[0026] However, the existing photovoltaic building integration does not consider the light radiation amount of the location of individual photovoltaic buildings or building auxiliary facilities during the initial design of the building, resulting in insufficient sunlight at the location of the photovoltaic building or the building auxiliary facility, so that sufficient light radiation cannot be obtained, resulting in insufficient power consumption of the photovoltaic building or the building auxiliary facility.

[0027] In order to solve the above problems, the present application provides a photovoltaic building system, which comprises:

[0028] a building group area, the building group area comprising a plurality of photovoltaic buildings;

[0029] a building auxiliary facility, the building auxiliary facility comprising at least a parking lot;

[0030] The photovoltaic building top is provided with photovoltaic components, at least for providing electric energy for the photovoltaic building;

[0031] At least part of the outer wall surface of the photovoltaic building is a photovoltaic building material, and the photovoltaic building material at least includes a crystalline silicon wafer; the photovoltaic building material is at least used for providing electric energy for the parking lot.

[0032] Specifically, the building group area at least includes a plurality of photovoltaic buildings, and further, the building group area can further include ordinary buildings. The number of the photovoltaic buildings and the ordinary buildings included in the building group area is not limited here, and can be determined according to actual conditions.

[0033] The building group area is further provided with building auxiliary facilities. The building auxiliary facilities can be understood as the supporting facilities of the building. The building auxiliary facilities can include a parking lot, and further, the building auxiliary facilities can include greening and landscape facilities, lighting nets, etc.

[0034] The photovoltaic building top is provided with photovoltaic components, which can be used to provide electric energy for the equipment in the photovoltaic building. Further, at least part of the outer wall surface of the photovoltaic building can be provided with a photovoltaic building material, which at least includes a crystalline silicon wafer. The structure and style of the photovoltaic building material are not limited here, and can be determined according to actual conditions. The photovoltaic building material is at least used for providing electric energy for the parking lot. Since the parking lot is often arranged at a lower position and is easily blocked by other buildings, it cannot obtain sufficient light radiation. The photovoltaic building is higher, and can obtain more light radiation. The use of the photovoltaic building material of the photovoltaic building to provide electric energy for the parking lot can improve the amount of electric energy obtained by the parking lot. Optionally, a plurality of charging piles are arranged in the area with the lowest light radiation in the parking lot, and the charging piles are used to provide electric energy for charging equipment. That is, the photovoltaic building material can provide electric energy for the charging piles, wherein the charging equipment includes at least one of the following: an electric vehicle, an electric motorcycle, an electric bicycle, and a portable electronic device.

[0035] Optionally, the photovoltaic building material can also be used to provide electric energy for other buildings or building auxiliary facilities, thereby improving the utilization rate of electric energy to a certain extent.

[0036] Since the electric energy of the parking lot is provided by the photovoltaic building material of the photovoltaic building, the building auxiliary facilities can be arranged in the area with the lowest light radiation in the building group area. Further, other facilities can be arranged in the area with relatively high light radiation. The other facilities can be ordinary facilities or photovoltaic facilities. In this way, the utilization rate of light radiation can be improved to a certain extent.

[0037] For details, please refer to Figure 1 ,Figure 1 As shown, the area 100 is a photovoltaic building system, in which at least a plurality of photovoltaic buildings 101 and a parking lot 102 are included. The photovoltaic building material on the photovoltaic building 101 can supply power to the parking lot 102. The connection structure 1021 can be understood as an electrical circuit between the photovoltaic building 101 and the parking lot 102, and the photovoltaic building 101 supplies power to the parking lot 102 through the connection structure 1021.

[0038] In this application, the method for obtaining the light radiation amount at each position in the building cluster area is not specifically limited. Specifically, the data collection device can be used to collect the light radiation information in the building cluster area as a reference for subsequent building planning. The light radiation information here is not limited to ground radiation, but can also be solar scattered radiation of the building cluster area and radiation at different heights. That is, the data collection device is arranged at at least one of the following positions: the ground of the building cluster area, the upper space of the building cluster area. According to the different arrangement positions of the data collection device, the light radiation amount at different positions in the building cluster area is collected.

[0039] In order to collect the light radiation information, the type of the data collection device can include but is not limited to at least one of the following: a radiation sampler, an air sampler, and a radiation dose instrument. Further, in addition to the above-mentioned radiation information, the data collection device can also collect other types of information for providing different reference bases in subsequent building design. The information types can also include geographical information and climate characteristics of the region where the building cluster area is located. Correspondingly, the data collection device can also include a geographical information collector, a GPS, a weather collector, etc. Optionally, the light radiation information can also be obtained based on the local weather database.

[0040] Optionally, the data collection device can also include a storage module for storing the collected radiation information. That is, the data collection device does not need to be in the building setting device and / or the radiation evaluation device, but stores the collected information in the storage module, which can be called by other devices when needed. The storage module includes at least one of the following: a hard disk, an optical disk, and a read-only memory.

[0041] Optionally, there is a spacing between each building in the building cluster area, and preferably the spacing is greater than 30 meters. Under this spacing, the shading degree of the photovoltaic building can be reduced, and the light radiation amount received by the photovoltaic building can be increased. That is, the photovoltaic components and the photovoltaic building material can obtain more solar radiation, thereby solving the problems of low power generation efficiency and unstable power generation of the photovoltaic components in the later stage.

[0042] It needs to be understood that the distance greater than 30 meters is a preferred solution provided by the present application. Optionally, the light radiation information can be input into the building setting device to obtain the radiation conditions of the target area at different positions and in different geographical environments. For example, since the slope solar radiation has a direct impact on the operation effect of the solar photovoltaic building integrated system, it is necessary to accurately determine the slope solar radiation of the site where the project is located to ensure the rationality of the installation of the photovoltaic building integrated components in the later period. And according to the total radiation of different positions, the building layout scheme is obtained. The relationship between the total radiation and other radiation can meet:

[0043] H t =H bt +H dt +H rt ;

[0044] In the formula, H t is the total radiation; H bt is the direct radiation; H dt is the scattering in the sky; and H rt is the ground reflection.

[0045] For easy understanding, please refer to Figure 2 , Figure 2 is a schematic diagram of the building layout scheme provided by the embodiment of the present application, as shown in Figure 2 , the first area 200 is the building area, in which the present application determines the radiation intensity of the first area 200 by the strength of the color, the lighter the color, the greater the solar radiation intensity. Therefore, the second area 201 with light color is the area where the photovoltaic building is set, and other areas except the second area 201 can be used to set ordinary buildings and building auxiliary facilities.

[0046] In another illustrative embodiment, the PVsyst software can also be used to evaluate and analyze the influence of the radiation conditions of the target area, to provide a scientific basis for the subsequent site design and photovoltaic building arrangement in the building layout, so that the location selection is reasonable, and the demand for maximum solar radiation is met.

[0047] The same building has different solar radiation due to different orientations, thereby affecting the power generation efficiency of the photovoltaic components. In order to improve the radiation absorption of the photovoltaic components as much as possible, the present application further optimizes the setting position of the photovoltaic components, that is, at least part of the outer wall surface with the highest light radiation of the photovoltaic building is provided with a crystalline silicon wafer. That is, the crystalline silicon wafer is preferentially arranged on the side with the strongest light radiation of the photovoltaic building, thereby increasing the total light radiation received by the crystalline silicon wafer.

[0048] Optionally, Ecotect software can be used to analyze the shading analysis between each photovoltaic building, so as to present the shading between buildings more intuitively, and on this basis, re-optimize the building shape in the presence of serious shading, so as to avoid the impact of photovoltaic components and photovoltaic building materials on the power generation efficiency in the later stage. Ecotect software can also be used to determine the outer wall surface with the highest light radiation in each photovoltaic building, and at least partially install photovoltaic building materials on the outer wall surface.

[0049] The light radiation of the building side surface is related to the geographical position where it is located. The relationship can satisfy:

[0050]

[0051] In the formula, R b is a parameter; is the dimension coordinate corresponding to the location; δ is the declination coordinate of the sun; a is the inclination angle of the inclined surface; h s is the horizontal sunset hour angle; h ′ s is the sunset hour angle on the inclined surface.

[0052] In this way, the photovoltaic building structure constructed can be: the outer wall surface with the highest light radiation in the photovoltaic building is installed with photovoltaic building materials, and other outer wall surfaces are provided with glass curtain walls, so that the building shape can be optimized while ensuring the function of the photovoltaic building, and the construction cost of the photovoltaic building can also be reduced.

[0053] It should be noted that the present application does not specifically limit the setting scheme of other side surfaces of the photovoltaic building except other outer wall surfaces. Specifically, the other side surfaces can also be provided with photovoltaic building materials, that is, the radiation absorption amount of the photovoltaic components can be increased, so as to increase the power supply. Traditional decorative materials such as glass curtain walls can also be used, so that the construction cost of the photovoltaic building can be reduced. The specific setting mode can be set by the user, and the present application does not make specific limitations.

[0054] Further, since the height of the photovoltaic building is often proportional to the light radiation, the crystalline silicon wafer with high power conversion capability can be arranged at the upper part of the outer wall surface. The lower part of the outer wall surface can be provided with a layered material. The layered material is obtained by combining a glass substrate and a crystalline silicon wafer material. In this way, the construction cost of the photovoltaic building can be reduced to a certain extent.

[0055] Optionally, the crystalline silicon wafer arranged at the upper part of the outer wall surface is a single crystalline silicon wafer. Since the power conversion rate of the single crystalline silicon wafer is higher, arranging it at the upper part which can absorb more light radiation can increase the overall light radiation absorption amount of the photovoltaic building.

[0056] The application does not specifically limit the number of layers of the layered material, preferably, the layered material is five layers, specifically including: a glass substrate, a first adhesive film layer, a crystalline silicon wafer, a second adhesive film layer, and a back plate layer. The glass substrate is used to protect the crystalline silicon wafer and simultaneously plays a light-transmitting role, allowing sunlight to be as much as possible to irradiate the crystalline silicon wafer in the next layer. The first adhesive film layer is located between the glass substrate and the crystalline silicon wafer, and is used to fix the crystalline silicon wafer and simultaneously reduce the air gap between the crystalline silicon wafer and the glass substrate to reduce light reflection. The crystalline silicon wafer is used to convert solar light into electric energy. The second adhesive film layer has a similar function to the first adhesive film layer, and the back plate layer mainly plays a supporting, protecting and sealing role.

[0057] In the application, the setting scheme of the photovoltaic module and the photovoltaic building material is not specifically limited. Preferably, the included angle α between the photovoltaic module at the top of the photovoltaic building and the ground plane is α≤25°, and the included angle β between the photovoltaic building material and the ground plane is 70°≤β≤90°.

[0058] Specifically, when the included angle α between the photovoltaic module at the top of the photovoltaic building and the ground plane is less than or equal to 25°, the amount of light radiation obtained is the largest. When the included angle α is greater than 25°, the amount of light radiation obtained gradually decreases. Preferably, the included angle β between the photovoltaic building material and the ground plane is 70°≤β≤90°. When the included angle β does not meet the above range, the photovoltaic building material cannot be installed on the wall of the building, and the amount of light radiation absorbed is lower.

[0059] In the application, the outer wall surface at least includes: a wall, a door, and a window, that is, the photovoltaic building material can be used as a wall and / or a door and window, so that the use rate of the photovoltaic building can be improved, and the aesthetic appearance is increased.

[0060] In the application, considering that the radiation conversion capabilities of the photovoltaic building material and the crystalline silicon plate are different, the size of the voltage obtained is also different, therefore, the application additionally provides different inverters for the photovoltaic building material and the crystalline silicon plate, for example, the photovoltaic building material is connected with a first inverter, and the crystalline silicon plate is connected with a second inverter. When the voltage of the current generated by the inverter connected with the photovoltaic building material is the same as the voltage of the current generated by the inverter connected with the crystalline silicon plate, the current can be directly put into use.

[0061] The above is a photovoltaic building system provided by the application, wherein the application does not specifically limit the combination mode of each embodiment, and the combination mode can be freely combined according to the actual situation.

[0062] The above is only the preferred embodiment of the application, and it should be pointed out that, for ordinary skilled persons in the art, a number of improvements and refinements can be made without departing from the principles of the application, and these improvements and refinements should be regarded as the protection scope of the application.

Claims

1. A photovoltaic building system, characterized in that, The system comprises: a building cluster area, the building cluster area comprising a plurality of photovoltaic buildings; a building auxiliary facility, the building auxiliary facility at least comprising a parking lot; a photovoltaic component arranged on a roof of the photovoltaic building, the photovoltaic component at least used for providing electric energy for the photovoltaic building; at least part of an outer wall surface of the photovoltaic building is a photovoltaic building material, the photovoltaic building material at least being a crystalline silicon wafer, the photovoltaic building material at least used for providing electric energy for the parking lot.

2. The photovoltaic building system of claim 1, wherein, The building auxiliary facility is arranged in a region with the lowest light radiation in the building cluster area.

3. The photovoltaic building system of claim 1 or 2, wherein, A plurality of charging piles are arranged in a region with the lowest light radiation in the parking lot, the charging piles used for providing electric energy for charging equipment.

4. The photovoltaic building system of claim 1, wherein, A spacing between each building in the building cluster area is greater than 30 meters.

5. The photovoltaic building system of claim 1, wherein, The outer wall surface at least comprises a wall, a door and a window.

6. The photovoltaic building system of claim 1, wherein, A crystalline silicon wafer is arranged in at least part of a region of an outer wall surface with the highest light radiation of the photovoltaic building.

7. The photovoltaic building system of claim 6, wherein, At least part of the outer wall surface of the photovoltaic building is arranged as a layered material combined with a glass substrate and a crystalline silicon wafer material; the crystalline silicon wafer is arranged at an upper portion of the outer wall surface, and the layered material is arranged at a lower portion of the outer wall surface.

8. The photovoltaic building system of claim 7, wherein, The crystalline silicon wafer comprises at least one of a single-crystal silicon wafer and a polycrystalline silicon wafer; the single-crystal silicon wafer is arranged at the upper portion of the outer wall surface, and the crystalline silicon wafer material in the layered material is a polycrystalline silicon wafer.

9. The photovoltaic building system of claim 8, wherein, The layered material is five layers.

10. The photovoltaic building system of claim 1, wherein, An included angle α between the photovoltaic component on the roof of the photovoltaic building and a ground plane is α≤25°. An included angle β between the photovoltaic building material and the ground plane is 70°≤β≤90°.

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