Window type photoelectric module with heat insulation and power generation benefit enhancement functions

Abstract

The utility model provides a window-type photoelectric module with heat insulation and power generation benefit enhancement functions. The window-type photoelectric module comprises a frame body, a window sheet, a reflective curtain assembly and a light-transmitting double-sided solar cell, the window piece, the light-reflecting curtain assembly and the light-transmitting double-face solar cell are arranged on the frame body. The reflective curtain assembly comprises a first face and a second face which are opposite to each other, the first face faces the window piece, and the second face has sunlight reflectivity which is more than 60%. The light-transmitting double-sided solar cell comprises a first power generation side and a second power generation side which are opposite to each other, and the second power generation side faces the second surface.

Description

Technical Field

[0001] This case relates to photovoltaic modules, and more particularly to a window-type photovoltaic module that combines thermal insulation with enhanced power generation. Background Art

[0002] Solar energy is a form of energy developed by harnessing the light and heat of the sun. Solar power generation does not produce greenhouse gases like carbon dioxide, thus causing no environmental pollution. In recent years, it has become a highly regarded green energy source.

[0003] Among them, a solar cell is a device that converts energy into electrical energy based on the quantum effect of semiconductors through the photovoltaic effect.

[0004] Solar cells can be roughly divided into three types: silicon-based solar cells, compound semiconductor solar cells and organic solar cells. Among them, silicon-based solar cell technology is the most mature and popular.

[0005] Silicon-based solar cells are primarily categorized into monocrystalline silicon solar cells, polycrystalline silicon solar cells, and thin-film solar cells. While monocrystalline silicon solar cells boast the highest conversion efficiency of all solar cells, they still suffer from high production costs and time constraints.

[0006] Thin-film solar cells are continually being developed and researched due to their low cost, lightweight, resource-saving, and easy manufacturing advantages. Although their photoelectric conversion efficiency is lower than that of single-crystalline silicon solar cells, the applicant believes that improving the photoelectric conversion efficiency of thin-film solar cells and applying them to everyday life will effectively contribute to environmental protection. Utility Model Content

[0007] In light of this, this invention provides a window-type photovoltaic module that combines thermal insulation with enhanced power generation efficiency. The module comprises a frame, a window sheet, a reflective curtain assembly, and a translucent bifacial solar cell. The window sheet is mounted within the frame. The reflective curtain assembly is mounted within the frame and comprises a first surface and a second surface facing each other, with the first surface facing the window sheet and the second surface having a solar reflectivity of at least 60%. The translucent bifacial solar cell is mounted within the frame and comprises a first power generation side and a second power generation side facing each other, with the second power generation side facing the second surface.

[0008] In some embodiments, the solar reflectance is greater than 70%.

[0009] In some embodiments, the frame includes a first frame and a second frame, the window sheet and the reflective curtain assembly are arranged in the first frame, the transparent bifacial solar cell is arranged in the second frame, and the first frame is connected to the second frame.

[0010] In some embodiments, the first frame is pivotally connected to the second frame.

[0011] In some embodiments, the first frame body is slidably disposed on the second frame body in a linearly displaceable manner.

[0012] In some embodiments, the reflective curtain assembly includes a base, a rotating shaft, and a curtain. The base is disposed on the frame, the rotating shaft is pivotally disposed on the base, and the curtain is disposed on the base.

[0013] In some embodiments, the curtain fabric is wound around a rotating shaft.

[0014] In some embodiments, the curtain is a honeycomb curtain, and one end of the curtain is fixed to the rotating shaft, and the two ends can be folded and retracted.

[0015] In some embodiments, the transparent bifacial solar cell includes a first transparent substrate, a first transparent electrode, a plurality of silicon thin film layers, a second transparent electrode, and a second transparent substrate stacked in sequence.

[0016] In some embodiments, the first surface is a cloth substrate, the second surface is a reflective film, and the reflective film is connected to the cloth substrate.

[0017] In some embodiments, the reflective curtain assembly further includes a driving source connected to the rotating shaft and disposed on the base.

[0018] In some embodiments, the curtain fabric is woven from a plurality of reflective yarns.

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the exploded three-dimensional structure of an embodiment of a window-type photovoltaic module that combines heat insulation and enhanced power generation efficiency.

[0021] Figure 2 Schematic diagram of the three-dimensional structure of an embodiment of a window-type photovoltaic module that combines heat insulation and enhanced power generation efficiency.

[0022] Figure 3 Schematic diagram of an embodiment of a window-type photovoltaic module that combines heat insulation and enhanced power generation efficiency.

[0023] Figure 4Schematic diagram of a light-transmitting bifacial solar cell in one embodiment of a window-type photovoltaic module with both heat insulation and enhanced power generation efficiency.

[0024] Figure 5 This is a perspective exploded schematic diagram of another embodiment of the window-type photovoltaic module that combines heat insulation and enhanced power generation efficiency.

[0025] Figure 6 This is a combined cross-sectional view of an embodiment of a window-type photovoltaic module that combines heat insulation with enhanced power generation efficiency.

[0026] Figure 7 The usage state of an embodiment of the window-type photovoltaic module with both heat insulation and enhanced power generation efficiency in this case Figure 1 .

[0027] Figure 8 The usage state of an embodiment of the window-type photovoltaic module with both heat insulation and enhanced power generation efficiency in this case Figure 2 .

[0028] Among them, the reference numerals

[0029] 10: Frame

[0030] 10A: First frame

[0031] 10B: Second frame

[0032] 11: Pivot

[0033] 12: Slide rail

[0034] 13: Slider

[0035] 20: Window

[0036] 30:Reflective curtain assembly

[0037] 31: base body

[0038] 311: Side

[0039] 32: Shaft

[0040] 33: curtain fabric

[0041] 331: First side

[0042] 332: Side 2

[0043] 34: drawstring

[0044] 35: Drive source

[0045] 40: Transparent double-sided solar cell

[0046] 41: first transparent substrate

[0047] 42: first light-transmitting electrode

[0048] 43:Silicon thin film layer

[0049] 44: second light-transmitting electrode

[0050] 45: second transparent substrate

[0051] 50: Light sensor DETAILED DESCRIPTION

[0052] The structural principle and working principle of the utility model are described in detail below with reference to the accompanying drawings:

[0053] Please refer to Figure 1 and Figure 2 . Figure 1 This is a schematic diagram of the exploded three-dimensional structure of an embodiment of a window-type photovoltaic module that combines heat insulation and enhanced power generation efficiency. Figure 2 The schematic diagram of the three-dimensional structure of an embodiment of a window-type photovoltaic module with both heat insulation and enhanced power generation efficiency is shown in FIG. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency comprises a frame 10 , a window sheet 20 , a reflective curtain assembly 30 , and a light-transmitting bifacial solar cell 40 .

[0054] The window sheet 20, the reflective curtain assembly 30, and the translucent bifacial solar cell 40 are disposed within the frame 10, with the reflective curtain assembly 30 disposed between the window sheet 20 and the translucent bifacial solar cell 40. Sunlight is received by one side of the translucent bifacial solar cell 40 to generate a primary power generation. Sunlight then passes through the translucent bifacial solar cell 40 and is directed toward the reflective curtain assembly 30. The reflective curtain assembly 30 then reflects the sunlight, directing it toward the other side of the translucent bifacial solar cell 40 to generate a secondary power generation. This increases the photoelectric conversion efficiency and reduces the indoor temperature, achieving energy conservation.

[0055] The frame 10 is the main structure for assembling the window sheet 20, the reflective curtain assembly 30, and the light-transmitting bifacial solar cell 40. In some embodiments, the frame 10 can be, but is not limited to, a single-piece or split-piece structure. In embodiments of a single-piece frame 10, the frame 10 is a hollow frame-shaped structure, with the window sheet 20, the reflective curtain assembly 30, and the light-transmitting bifacial solar cell 40 assembled in parallel within the frame 10 to form a single unit.

[0056] See Figures 1 to 4In some embodiments, the frame 10 is a split frame to separately mount the window 20 and the light-transmitting bifacial solar cell 40. This allows the window 20 and the light-transmitting bifacial solar cell 40 to be separated or opened as needed, thereby facilitating the operation, maintenance, or replacement of the reflective curtain assembly 30. In this embodiment, the frame 10 includes a first frame 10A and a second frame 10B. The first frame 10A mounts the window 20, and the second frame 10B mounts the light-transmitting bifacial solar cell 40. The reflective curtain assembly 30 can be mounted in either the first frame 10A or the second frame 10B.

[0057] The window 20 is made of a light-transmitting material. Specifically, the window 20 can be made of glass, plastic, or a composite material. In some embodiments, the shape and size of the window 20 correspond to the shape and size of the inner edge of the first frame 10A to completely enclose the inner edge of the first frame 10A. In other embodiments, the window 20 is not limited to a sheet structure. To meet different needs, the window 20 can also be a mesh or a blind.

[0058] See Figures 1 to 4 The reflective curtain assembly 30 is disposed within the frame 10 and includes a first surface 331 and a second surface 332 facing each other. The first surface 331 faces the window 20, and the second surface 332 has a solar reflectance of 60% or greater. In some embodiments, the reflective curtain assembly 30 is disposed within the first frame 10A and includes a base 31, a rotating shaft 32, and a curtain 33. In this embodiment, the reflective curtain assembly 30 is disposed within the first frame 10A, but the present invention is not limited thereto.

[0059] See Figures 1 to 4 The base 31 of the reflective curtain assembly 30 is used to carry the rotating shaft 32 and the curtain 33 and is then mounted on the first frame 10A. In some embodiments, the base 31 is an elongated structure with a roughly U-shaped cross-section. In this embodiment, the base 31 has two parallel and spaced-apart side surfaces 311. The rotating shaft 32 is assembled between the two side surfaces 311, and the two side surfaces 311 are also assembled to the first frame 10A.

[0060] See Figures 1 to 4 In some embodiments, the rotating shaft 32 of the reflective curtain assembly 30 is an elongated cylinder, and the rotating shaft 32 is rotatably pivoted between the two side surfaces 311 of the base 31 .

[0061] One end of the curtain 33 is fixed to the outer surface of the rotating shaft 32, and the other end is free. In some embodiments, the curtain 33 is composed of a fabric substrate with a reflective film applied thereto. In this embodiment, the fabric substrate does not reflect light, while the reflective film does. One side of the fabric substrate is covered with the reflective film, so that the curtain 33 has a first side 331 formed by the fabric substrate and a second side 332 formed by the reflective film. In some embodiments, the second side 332 reflects sunlight, and the solar reflectance of the second side 332 is preferably 60% or higher. In some embodiments, the solar reflectance of the curtain 33 is more preferably 70% or higher. Of course, the solar reflectance of the curtain 33 is not limited to the above. The solar reflectance of the second side 332 of the curtain 33 can also be, but is not limited to, 65%, 70%, 75%, 80%, 85%, 90%, 95%, or 100%.

[0062] In some embodiments, the curtain 33 is not limited to being composed of a fabric base combined with a reflective film, but can also be composed of a plurality of reflective yarns woven together.

[0063] In some embodiments, the reflective curtain assembly 30 can be, but is not limited to, a roll-up curtain or a cellular curtain. In embodiments where the reflective curtain assembly 30 is a roll-up curtain, one end of the curtain 33 is fixed to a rotating shaft 32, while the other end is wound around the outer surface of the rotating shaft 32. Rotating the rotating shaft 32 controls the release or retraction of the curtain 33. When the curtain 33 is released, the first surface 331 of the curtain 33 blocks the window 20, while the second surface 332 faces the light-transmitting bifacial solar cell 40.

[0064] See Figure 5 In the embodiment where the reflective curtain assembly 30 is a honeycomb curtain, the reflective curtain assembly 30 further includes a drawstring 34, one end of which is fixed to the rotating shaft 32 and the other end is connected to a curtain 33. In this embodiment, the curtain 33 is a honeycomb curtain (also known as an accordion curtain). One end of the curtain 33 is fixed to the base 31 and the other end is connected to the drawstring 34, so that it is driven by the drawstring 34 to fold and expand. When the drawstring 34 is retracted on the rotating shaft 32, the curtain 33 folds and contracts. When the drawstring 34 is released, the curtain 33 relaxes and extends. When the curtain 33 relaxes and extends, it forms multiple hollow honeycomb structures. Similarly, the first surface 331 of the curtain 33 faces the window 20 and the second surface 332 faces the light-transmitting bifacial solar cell 40.

[0065] See Figure 6The transparent bifacial solar cell 40 is a bifacial solar panel that generates electricity by absorbing sunlight. In some embodiments, the transparent bifacial solar cell 40 is a silicon thin-film solar cell. In this embodiment, the transparent bifacial solar cell 40 primarily comprises a first transparent substrate 41, a first transparent electrode 42, multiple silicon thin-film layers 43, a second transparent electrode 44, and a second transparent substrate 45, which are stacked in sequence.

[0066] In some embodiments, the first transparent substrate 41 and the second transparent substrate 45 are glass. The first transparent electrode 42 and the second transparent electrode 44 are transparent conductive oxides (TCO) having high transmittance and high conductivity within the solar spectrum range in which the transparent bifacial solar cell 40 operates. In some embodiments, the transparent conductive oxide used as the first transparent electrode 42 and the second transparent electrode 44 can be, but is not limited to, tin oxide (SnO2), indium tin oxide (ITO), or zinc oxide (ZnO) doped with other elements (such as B, Ga, Al, etc.). In some embodiments, the refractive index of zinc oxide (ZnO) doped with aluminum (Al) is between that of air and silicon thin film (1.8 to 2), which can more effectively guide sunlight into the silicon thin film layer 43, thereby improving the photoelectric conversion efficiency.

[0067] In some embodiments, the silicon thin film layer 43 includes a combination of an amorphous silicon (a-Si) layer and a microcrystalline silicon (μc-Si) layer.

[0068] Here, the first and second transparent electrodes 42, 44 of the transparent bifacial solar cell 40 serve as the front and back contact layers, respectively. The silicon thin film layer 43 between the first and second transparent electrodes 42, 44 serves as the intrinsic layer. The operating principle is that sunlight passes through the first transparent substrate 41 and the first transparent electrode 42 and enters the silicon thin film layer 43. The silicon thin film layer 43 absorbs the sunlight to generate electricity, which is then conducted through electrical wires to generate current.

[0069] In some embodiments of the present invention, a window-type photovoltaic module, which combines thermal insulation with enhanced power generation, is installed as a window in a building. During installation, the light-transmitting bifacial solar cell 40 faces the exterior of the building, while the window sheet 20 faces the interior. When sunlight shines outside the building and the curtain 33 of the reflective curtain assembly 30 is retracted, sunlight enters through the first light-transmitting substrate 41 of the light-transmitting bifacial solar cell 40. The sunlight entering through the first light-transmitting substrate 41 then passes through the first light-transmitting electrode 42 and into the silicon thin film layer 43. The silicon thin film layer 43 absorbs the sunlight and generates a photovoltaic effect, generating electricity.

[0070] When the curtain fabric 33 of the reflective curtain assembly 30 is in the extended state, its second surface 332 faces the second transparent substrate 45 of the transparent bifacial solar cell 40. At this point, sunlight entering through the first transparent substrate 41 generates electricity, then continues through the second transparent electrode 44 and is finally emitted from the second transparent substrate 45. The sunlight emitted by the second transparent substrate 45 is directed toward the second surface 332 of the reflective curtain assembly 30. The second surface 332 reflects the sunlight, allowing it to re-enter the transparent bifacial solar cell 40 through the second transparent substrate 45. The sunlight reflected by the reflective curtain assembly 30 and entering the transparent bifacial solar cell 40 then passes through the second transparent electrode 44 and into the silicon thin film layer 43, generating electricity again.

[0071] In this way, the combination of the transparent bifacial solar cell 40 and the reflective curtain assembly 30 allows the same amount of sunlight to be used to generate electricity twice, improving the power generation efficiency of the transparent bifacial solar cell 40. Furthermore, because the second surface 332 of the reflective curtain assembly 30 reflects sunlight, under the same sunlight intensity, the reflective curtain assembly 30 not only prevents sunlight from entering the room and causing a temperature rise, but also reflects sunlight to reduce the degree of temperature rise, thereby reducing the energy consumption of the indoor air conditioner. Field measurements have shown that when the curtain 33 of the reflective curtain assembly 30 is retracted, the sunlight absorbed by the transparent bifacial solar cell 40 alone effectively reduces the energy consumption of the indoor air conditioner. When the curtain 33 of the reflective curtain assembly 30 is extended, the reflective effect of the curtain 33 reduces the energy consumption of the indoor air conditioner by 4 / 5, achieving a significant energy saving effect.

[0072] It is worth noting that since the window-type photovoltaic module of this case, which combines heat insulation and enhanced power generation efficiency, is in the form of a window as a whole, and the light transmittance of the light-transmitting bifacial solar cell 40 maintains the lighting characteristics required by the building, the window-type photovoltaic module of this case, which combines heat insulation and enhanced power generation efficiency, can be installed in the original window position. After installation, it can provide general window functions while achieving the effects of power generation and energy saving.

[0073] See Figure 7 In some embodiments where the frame 10 is split, the first frame 10A is pivotally connected to the second frame 10B, but this is not limiting. In this embodiment, the first and second frames 10A, 10B are pivotally connected by a pivot 11, and the reflective curtain assembly 30 is disposed within the first frame 10A. This allows the second frame 10B to pivot away from the first frame 10A, revealing the reflective curtain assembly 30. This allows the user to manually open and close the reflective curtain assembly 30, as well as repair or replace it. In this embodiment, the pivot is a hinge.

[0074] See Figure 8In some embodiments where the frame 10 is split, the first frame 10A is linearly slidably connected to the second frame 10B. In this embodiment, the first frame 10A has a cylindrical slide rail 12, and the second frame 10B has a slider 13 that fits correspondingly within the slide rail 12. The second frame 10B can be slidably inserted into the slide rail 12 of the first frame 10A via the slider 13. This allows the second frame 10B to slide away from the first frame 10A, revealing the reflective curtain assembly 30. This allows the user to manually control the retraction and extension of the reflective curtain assembly 30, as well as repair or replace different reflective curtain assemblies 30.

[0075] See Figure 5 In some embodiments, the reflective curtain assembly 30 can also be wirelessly controlled. In this embodiment, the reflective curtain assembly 30 further includes a drive source 35 connected to the shaft 32 and having wireless communication capabilities. This allows the user to control the operation of the shaft 32 by the drive source 35 without separating the light-transmitting bifacial solar cell 40 and the window sheet 20, thereby controlling the retraction and extension of the curtain 33.

[0076] See Figure 5 In some embodiments, the window-type photovoltaic module, which combines thermal insulation with enhanced power generation, further includes a light sensor 50 electrically connected to the drive source 35. The light sensor 50 can be, but is not limited to, located on the exterior of the frame 10 facing the building to sense the outdoor light intensity. In this embodiment, the light sensor 50 is located in the second frame 10B to automatically control the reflective curtain assembly 30 based on the light intensity. Specifically, when the sensed light intensity reaches a threshold, the light sensor 50 controls the drive source 35 to drive the rotating shaft 32 to lower the curtain 33, thereby shading the light and improving power generation efficiency. Conversely, when the light intensity sensed by the light sensor 50 falls below the threshold, the light sensor 50 controls the drive source 35 to drive the rotating shaft 32 to retract the curtain 33. In this way, the window-type photovoltaic module, which combines thermal insulation with enhanced power generation, automatically controls the retraction and extension of the curtain 33 based on the outdoor light intensity, improving user convenience and enhancing indoor comfort.

[0077] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A window-type photovoltaic module with both heat insulation and enhanced power generation efficiency, characterized in that: Include: a frame; a window disposed on the frame; a reflective curtain assembly disposed on the frame and comprising a first surface and a second surface opposite to each other, the first surface facing the window sheet, the second surface having a solar reflectivity of greater than 60%; and A light-transmitting bifacial solar cell is arranged in the frame. The light-transmitting bifacial solar cell comprises a first power generation side and a second power generation side opposite to each other. The second power generation side faces the second surface.

2. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 1, wherein: The solar reflectance is 70% or more.

3. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 1, wherein: The frame includes a first frame and a second frame. The window sheet and the reflective curtain assembly are arranged in the first frame. The light-transmitting double-sided solar cell is arranged in the second frame. The first frame is connected to the second frame.

4. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 3, wherein: The first frame is pivotally connected to the second frame.

5. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 3, wherein: The first frame body is linearly slidably disposed on the second frame body.

6. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 1, wherein: The reflective curtain assembly comprises a base, a rotating shaft and a curtain. The base is arranged on the frame, the rotating shaft is pivotally arranged on the base, and the curtain is arranged on the base.

7. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 6, wherein: The curtain fabric is wound around the rotating shaft.

8. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 6, wherein: The curtain is a honeycomb curtain, one end of which is fixed on the rotating shaft, and the two ends can be folded and retracted.

9. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 1, wherein: The light-transmitting double-sided solar cell comprises a first light-transmitting substrate, a first light-transmitting electrode, a plurality of silicon thin film layers, a second light-transmitting electrode and a second light-transmitting substrate which are stacked in sequence.

10. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 1, wherein: The first surface is a cloth base, the second surface is a reflective film, and the reflective film is connected to the cloth base.

11. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 6, wherein: The reflective curtain assembly further includes a driving source connected to the rotating shaft and disposed on the base.

12. The window-type photovoltaic module with both heat insulation and enhanced power generation efficiency as claimed in claim 6, wherein: The curtain is woven from a plurality of reflective yarns.

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