Process for making photovoltaic window glass for residential buildings

Abstract

The application provides a kind of civil residence photovoltaic power generation window glass manufacturing process, comprising the following steps: S1: import civil residence building design model and building coordinate position, set window number and obtain each window number corresponding window orientation, window size and room floor area;S2: according to building coordinate position and window orientation, determine the daylight factor, and determine the minimum daylight area corresponding to the current window number in combination with the room floor area;S3: according to the minimum daylight area corresponding to the current window number and the window size, determine the window glass PV layer area map;S4: according to the window size, cut the window glass, and attach the PV layer according to the PV layer area map;S5: outside the PV layer area, photovoltaic power generation film is prepared by deposition process to obtain the window glass corresponding to the current window number. Its effect is: the absorption area of photovoltaic power generation is increased, which can achieve several times the power generation capacity of the traditional mode, while meeting the needs of indoor lighting and curtain wall power generation.

Description

Technical Field

[0001] This invention relates to a process for manufacturing photovoltaic thin films, and more particularly to a process for manufacturing photovoltaic window glass for residential buildings. Background Technology

[0002] Photovoltaic power generation, as a new type of green energy, typically uses polycrystalline silicon panels and thin films, and can be used in green and smart civil buildings to achieve a "self-sufficient" energy supply model. However, polycrystalline silicon panels are mostly used only on rooftops and facades, and cannot be directly applied to glass windows, resulting in a relatively small overall power generation capacity and limited energy input. With the increasing number of high-rise and super high-rise buildings with all-glass curtain walls, simply installing photovoltaic materials on rooftops or facades is insufficient to meet the "self-sufficiency" functional requirements.

[0003] Some have also mentioned attaching photovoltaic films to facade glass, such as a new type of solar photovoltaic laminated glass disclosed in patent 201721678982.5, which meets the photovoltaic power generation requirements by setting a battery film layer in the glass interlayer. However, since the light transmittance of the film will affect the light-gathering effect, traditional glass, without considering the application scenario, sets photovoltaic films according to a uniform standard, which makes it difficult to meet the light-gathering requirements of different application scenarios. Summary of the Invention

[0004] This invention provides a manufacturing process for photovoltaic power generation window glass in residential buildings, and the technical problem it solves is: how to adaptively set the photovoltaic thin film laying density according to the specific location of the residential building's glass window.

[0005] To solve the above technical problems, the present invention provides a manufacturing process for photovoltaic power generation window glass in residential buildings, comprising the following steps:

[0006] S1: Import the civil residential building design model and building coordinates, set window numbers and obtain the window orientation, window size and room floor area corresponding to each window number;

[0007] S2: Determine the daylight factor based on the building's coordinates and the window's orientation, and determine the minimum daylight area corresponding to the current window number by combining the room's floor area;

[0008] S3: Determine the PV layer area diagram of the window glass based on the minimum light-receiving area and window size corresponding to the current window number;

[0009] S4: Cut the window glass according to the window size and attach the PV layer according to the PV layer area diagram;

[0010] S5: Photovoltaic thin films are prepared outside the PV layer region using a deposition process to obtain the window glass corresponding to the current window number.

[0011] Optionally, in step S2, the minimum daylighting area Ac corresponding to the current window number is calculated according to Ac = (Cmin × 6)Ad, and it is ensured that Ac:Ad ≥ 1:5, where: Cmin represents the daylighting coefficient and Ad represents the room floor area corresponding to the current window number.

[0012] Optionally, in step S3, multiple rectangular PV layer blocks are evenly arranged at predetermined intervals to form the PV layer area diagram, and an electrical path area is reserved around each rectangular PV layer block.

[0013] Optionally, a transparent conductive film is chemically deposited in the electrical pathway region.

[0014] Optionally, a photovoltaic power generation unit is formed by depositing Ge, PIN and ZnO on a transparent conductive film between two adjacent rectangular PV layer blocks and then applying a magnetron sputtering coating.

[0015] Optionally, the thickness of each photovoltaic power generation unit is the same as the thickness of the rectangular PV layer block.

[0016] Optionally, multiple photovoltaic power generation units can be connected in series.

[0017] Optionally, a QR code for identifying the window number is printed on each window pane.

[0018] The significant effects of this invention are:

[0019] (1) Traditional photovoltaic power generation systems can only supply the electricity needs of one or two floors, or for lighting in the garage at night, resulting in a very low return on investment. By using the manufacturing process provided by this invention, large areas of glass curtain walls can be used for photovoltaic power generation, increasing the absorption area of ​​photovoltaic power generation and achieving several times the power generation of the traditional mode.

[0020] (2) Traditional photovoltaic glass in the form of pure thin film ensures conversion efficiency but does not have enough light transmittance and will also affect the facade. This invention sets the batteries in a uniformly distributed manner, which will not affect the aesthetics of the curtain wall, while meeting the needs of indoor lighting and curtain wall power generation, and making it easy to realize adaptive customized production of curtain wall glass for civil buildings. Attached Figure Description

[0021] Figure 1 This is a process flow diagram of a specific embodiment of the present invention;

[0022] Figure 2 This is a distribution diagram of the PV layer region in a specific embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the photovoltaic cell deposition structure in a specific embodiment of the present invention. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. The embodiments are given for illustrative purposes only and should not be construed as limiting the present invention. The accompanying drawings are for reference and illustration only and do not constitute a limitation on the scope of patent protection of the present invention, because many changes can be made to the present invention without departing from the spirit and scope of the present invention.

[0025] like Figure 1 As shown, this embodiment provides a manufacturing process for photovoltaic power generation window glass in residential buildings, including the following steps:

[0026] S1: Import the civil residential building design model and building coordinates, set window numbers and obtain the window orientation, window size and room floor area corresponding to each window number;

[0027] S2: Determine the daylight factor based on the building's coordinates and the window's orientation, and determine the minimum daylight area corresponding to the current window number by combining the room's floor area;

[0028] S3: Determine the PV layer area diagram of the window glass based on the minimum light-receiving area and window size corresponding to the current window number;

[0029] S4: Cut the window glass according to the window size and attach the PV layer according to the PV layer area diagram;

[0030] S5: Photovoltaic thin films are prepared outside the PV layer region using a deposition process to obtain the window glass corresponding to the current window number.

[0031] In specific implementation, in step S2, the minimum daylighting area Ac corresponding to the current window number is calculated according to Ac=(Cmin×6)Ad, and it is ensured that Ac:Ad≥1:5, where: Cmin represents the daylighting coefficient and Ad represents the floor area of ​​the room corresponding to the current window number.

[0032] Combination Figure 2 As can be seen, in step S3, multiple rectangular PV layer blocks are evenly arranged at predetermined intervals to form the PV layer area diagram, and an electrical path area is reserved around each rectangular PV layer block.

[0033] Combination Figure 3 As can be seen, a transparent conductive film is chemically deposited in the electrical path area, and then Ge, PIN and ZnO are deposited on the transparent conductive film between two adjacent rectangular PV layer blocks. Then, a magnetron sputtering film is set to form a photovoltaic power generation unit. The thickness of each photovoltaic power generation unit is the same as the thickness of the rectangular PV layer block. After determining the shape and size of the PV layer, the specific photovoltaic thin film deposition process can be implemented using existing technology, which is convenient to implement.

[0034] In practice, multiple photovoltaic power generation units are connected in series.

[0035] For ease of logistics and installation, a QR code is printed on each window pane to identify the window number.

[0036] Combining the above methods, taking a super high-rise glass window in Wuhan's CBD as an example, we fabricated a photovoltaic power generation film for it. Based on its architectural design model, the super high-rise has a floor height of 4.4m, with the 14th-27th floors (Office #2) being the most standard. The effective lighting area is above 0.8m per floor, and the window length is 13.5m. Therefore, the effective lighting glass curtain wall area of ​​this room is (4.4-0.8)*13.5=48.6㎡, and the room floor area is 123.1㎡. According to the minimum window-to-floor ratio of 1:5, the lighting area should be 24.62㎡. Based on the building's coordinates and the window's orientation, the minimum daylighting coefficient is determined to be 2%, resulting in a lighting area of ​​14.77㎡. According to the method described above, to ensure optimal lighting, the minimum lighting area of ​​24.62㎡ should be taken. Based on the window length and dimensions, it can be seen that the photovoltaic power generation glass produced using this invention has approximately half of its effective area consisting of thin-film solar cells and half of ordinary PV film, effectively increasing the power generation area and ensuring the building's overall self-sufficiency in power supply.

[0037] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A manufacturing process for photovoltaic power generation window glass in residential buildings, characterized in that, Includes the following steps: S1: Import the civil residential building design model and building coordinates, set window numbers and obtain the window orientation, window size and room floor area corresponding to each window number; S2: Determine the daylight factor based on the building's coordinates and the window's orientation, and determine the minimum daylight area corresponding to the current window number by combining the room's floor area; S3: Determine the PV layer area diagram of the window glass based on the minimum light-receiving area and window size corresponding to the current window number; S4: Cut the window glass according to the window size and attach the PV layer according to the PV layer area diagram; S5: Photovoltaic thin films are prepared outside the PV layer region using a deposition process to obtain the window glass corresponding to the current window number.

2. The manufacturing process for photovoltaic power generation window glass in residential buildings according to claim 1, characterized in that, In step S2, the minimum daylighting area Ac corresponding to the current window number is calculated according to Ac = (Cmin × 6)Ad, and it is ensured that Ac:Ad ≥ 1:5, where: Cmin represents the daylighting coefficient and Ad represents the floor area of ​​the room corresponding to the current window number.

3. The manufacturing process for photovoltaic power generation window glass in residential buildings according to claim 1, characterized in that, In step S3, multiple rectangular PV layer blocks are evenly arranged at predetermined intervals to form the PV layer area diagram, and an electrical path area is reserved around each rectangular PV layer block.

4. The manufacturing process for photovoltaic power generation window glass in residential buildings according to claim 3, characterized in that, A transparent conductive film is chemically deposited in the electrical pathway region.

5. The manufacturing process for photovoltaic power generation window glass in residential buildings according to claim 4, characterized in that, A photovoltaic power generation unit is formed by depositing Ge, PIN and ZnO on a transparent conductive film between two adjacent rectangular PV layer blocks and then applying a magnetron sputtering coating.

6. The manufacturing process for photovoltaic power generation window glass in residential buildings according to claim 5, characterized in that, The thickness of each photovoltaic power generation unit is the same as the thickness of the rectangular PV layer block.

7. The manufacturing process for photovoltaic power generation window glass in residential buildings according to claim 5 or 6, characterized in that, Multiple photovoltaic power generation units are connected in series.

8. The manufacturing process for photovoltaic power generation window glass in residential buildings according to claim 7, characterized in that, Each window pane is printed with a QR code that identifies the window number.

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