Light-transmitting photovoltaic module
By providing light-transmitting grooves on the photovoltaic cell and installing a pattern layer with color and/or pattern thereon, the high power loss problem caused by occluding light by existing color photovoltaic modules is solved, and the effects of high light transmittance and low power loss are achieved.
Patent Information
- Application Number
- CN202421607282.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-09
AI Technical Summary
Existing color photovoltaic modules form patterns by printing color coatings or sputtering coatings, resulting in light blockage, power loss of more than 30%, and power generation returns are greatly reduced.
A light-transmitting groove is provided on the photovoltaic cell, and a adhesive film with color and/or pattern is provided on the pattern layer, so that the photovoltaic module is both aesthetic and does not lose power.
By setting up light-transmitting grooves, the power loss is controlled below 20%, and the light transmittance can reach more than 60%, achieving both beautiful and efficient photovoltaic modules.
Smart Images
Figure CN222916545U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of batteries, in particular to a light-transmitting photovoltaic component. Background Art
[0002] With the continuous development of technology, the application scenarios of photovoltaic module products have gradually expanded from ground power stations and rooftop power stations to photovoltaic building integration, indoor low-light products, etc. At the same time, there is also a higher demand for the artistry and ornamental value of photovoltaic module products. Currently, the existing color photovoltaic module products generally use the method of printing color coatings or sputtering coating to form color patterns, but this method will block light, causing the power loss of photovoltaic modules to reach more than 30%, and greatly reducing the power generation income.
[0003] Therefore, there is an urgent need to develop a patterned photovoltaic module that is both beautiful and does not lose power. Utility Model Content
[0004] Based on this, it is necessary to provide a light-transmitting photovoltaic module to address the problem of high power loss in existing patterned photovoltaic modules.
[0005] A light-transmitting photovoltaic component comprises a photovoltaic cell and a pattern layer which are stacked; the photovoltaic cell is provided with a light-transmitting groove; and the pattern layer is provided with colors and / or patterns.
[0006] The above-mentioned light-transmitting photovoltaic component, by setting a light-transmitting groove on the photovoltaic cell, enables the photovoltaic component installed with a pattern layer with color and / or pattern to still have good power, the power loss can be controlled below 20%, and the transmittance can reach more than 60%.
[0007] In one embodiment, the light-transmitting photovoltaic component further includes a first protective layer; and the pattern layer is disposed between the photovoltaic cell and the first protective layer.
[0008] In one embodiment, the light-transmitting photovoltaic assembly further includes a first adhesive film disposed between the photovoltaic cell and the pattern layer, and a second adhesive film and a first protective layer disposed in sequence on a side of the pattern layer away from the first adhesive film.
[0009] In one embodiment, the light-transmitting photovoltaic component further includes a second protective layer; the pattern layer is arranged between the photovoltaic cell and the second protective layer, and a third adhesive film and the first protective layer are sequentially arranged on a side of the photovoltaic cell away from the pattern layer.
[0010] In one embodiment, the light-transmitting photovoltaic component also includes the first adhesive film arranged between the photovoltaic cell and the pattern layer, the second adhesive film and the second protective layer arranged in sequence on the side of the pattern layer away from the first adhesive film, and the third adhesive film and the first protective layer arranged in sequence on the side of the photovoltaic cell away from the first adhesive film.
[0011] In one embodiment, the first protective layer is a front glass.
[0012] In one embodiment, the second protective layer is a back panel glass.
[0013] In one embodiment, the first adhesive film contains at least one of POE, EVA, and PVB; the second adhesive film contains at least one of POE, EVA, and PVB; and the third adhesive film contains at least one of POE, EVA, and PVB.
[0014] In one embodiment, the pattern layer is an adhesive film provided with colors and / or patterns; the adhesive film is a hot melt film or a thermoplastic film.
[0015] In one embodiment, the pattern layer includes at least one of silk fabric and polymer.
[0016] In one embodiment, the silk fabric is silk.
[0017] In one of the embodiments, the light-transmitting groove passes through the photovoltaic cell; the light-transmitting groove includes a circular groove, a square groove, and a mesh groove.
[0018] In one embodiment, the total area of the light-transmitting grooves is 25-70% of the area of the photovoltaic cell.
[0019] In one embodiment, the light transmittance of the light-transmitting photovoltaic component is 30-70%, and the reflectivity is 5-15%.
[0020] In one embodiment, the thickness of the first adhesive film is 0.3mm~1mm; the thickness of the second adhesive film is 0.1mm~1mm; the thickness of the third adhesive film is 0.3mm~1mm; the thickness of the first protective layer is 0.7mm~8mm; the thickness of the second protective layer is 1mm~8mm; the thickness of the pattern layer is 0.05mm~0.7mm.
[0021] In one embodiment, the photovoltaic cell is at least one of a perovskite cell, a cadmium telluride cell, an organic photovoltaic cell, a CIGS cell, and a stacked cell.
[0022] Compared with the prior art, the utility model has the following beneficial effects:
[0023] The utility model provides a light-transmitting photovoltaic module, which can still have good power when a photovoltaic module with a pattern layer having colors and / or patterns is installed, by setting a light-transmitting groove on the photovoltaic cell, and the power loss can be controlled below 20%, and the light transmittance can reach more than 60%. The light-transmitting module of the utility model can be used to make screens, billboards or signs, and can also be used to decorate corridors, corridors, traffic isolation belts, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the appearance effect of the pattern on the surface of the light-transmitting photovoltaic component of the utility model;
[0025] Figure 2 This is a schematic diagram of the appearance effect of the pattern on the surface of the light-transmitting photovoltaic component of the utility model;
[0026] Figure 3 This is a schematic diagram of the appearance effect of the pattern on the surface of the light-transmitting photovoltaic component of the utility model;
[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of a photovoltaic cell provided with a light-transmitting groove;
[0028] Figure 5 is a schematic top view of a photovoltaic cell provided with a light-transmitting groove;
[0029] Figure 6 is a schematic top view of a photovoltaic cell provided with a light-transmitting groove;
[0030] Figure 7 is a schematic top view of a photovoltaic cell provided with a light-transmitting groove;
[0031] Figure 8 This is a schematic diagram of the structure of a light-transmitting photovoltaic assembly according to Example 1;
[0032] Fig. 9 This is a schematic diagram of the structure of a light-transmitting photovoltaic assembly according to Example 2;
[0033] Fig.10 This is a schematic diagram of the structure of a light-transmitting photovoltaic assembly according to Example 3;
[0034] Fig.11 This is a schematic diagram of the structure of a light-transmitting photovoltaic assembly according to Example 4;
[0035] Fig.12 It is a comparison chart of the transmittance of the light-transmitting photovoltaic component of Example 2 and the photovoltaic cell provided with a light-transmitting groove in the experimental example.
[0036] Explanation of the reference numerals: 1. light-transmitting photovoltaic component; 2. photovoltaic cell; 3. first adhesive film; 4. pattern layer; 5. second adhesive film; 6. first protective layer; 7. second protective layer; 8. third adhesive film; 9. light-transmitting groove. DETAILED DESCRIPTION
[0037] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0038] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.
[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0040] Example 1
[0041] A light-transmitting photovoltaic component (1) having a structure as follows Figure 8 As shown, it comprises a layered structure electrically connected in sequence from bottom to top: a photovoltaic cell (2), a pattern layer (4), and a first protective layer (6); a light-transmitting groove (9) is provided on the photovoltaic cell (2), and the light-transmitting groove (9) passes through the photovoltaic cell (2).
[0042] The photovoltaic cell (2) is a perovskite thin film cell, which is scribed by laser as follows: Figure 4 and Figure 5 The light-transmitting groove (9) structure shown; the pattern layer (4) is a PVB film sprayed with a color pattern; the first protective layer (6) is a front plate glass, which is composed of transparent conductive oxide and silicon dioxide.
[0043] The thickness of the photovoltaic cell (2) is 1 μm, the thickness of the pattern layer (4) is 0.1 mm, and the thickness of the first protective layer (6) is 2 mm.
[0044] The width of the light-transmitting groove (9) is 1 mm, and the distance between two adjacent light-transmitting grooves (9) is 0.4 mm; the total area of the light-transmitting grooves (9) is 40% of the area of the photovoltaic cell (2).
[0045] Example 2
[0046] A light-transmitting photovoltaic component (1) having a structure as follows Fig. 9 As shown, it comprises a layered structure electrically connected in sequence from bottom to top: a photovoltaic cell (2), a first adhesive film (3), a pattern layer (4), a second adhesive film (5), and a first protective layer (6); a light-transmitting groove (9) is provided on the photovoltaic cell (2), and the light-transmitting groove (9) passes through the photovoltaic cell (2).
[0047] The photovoltaic cell (2) is a perovskite thin film cell, which is scribed by laser as follows: Figure 4 and Figure 5 The light-transmitting groove (9) structure shown in the figure; the pattern layer (4) is silk sprayed with a color pattern; the first adhesive film (3) and the second adhesive film (5) are composed of a polyolefin elastomer; and the first protective layer (6) is a front plate glass composed of silicon dioxide.
[0048] The thickness of the photovoltaic cell (2) is 1 μm, the thickness of the first adhesive film (3) is 0.7 mm, the thickness of the pattern layer (4) is 0.3 mm, the thickness of the second adhesive film (5) is 0.7 mm, and the thickness of the first protective layer (6) is 2.1 mm.
[0049] The width of the light-transmitting groove (9) is 0.8 mm, and the distance between two adjacent light-transmitting grooves (9) is 0.8 mm; the total area of the light-transmitting grooves (9) is 50% of the area of the photovoltaic cell (2).
[0050] Example 3
[0051] A light-transmitting photovoltaic component (1) having a structure as follows Fig.10 As shown, it comprises a layered structure electrically connected in sequence from bottom to top: a first protective layer (6), a third adhesive film (8), a photovoltaic cell (2), a pattern layer (4), and a second protective layer (7); a light-transmitting groove (9) is provided on the photovoltaic cell (2), and the light-transmitting groove (9) passes through the photovoltaic cell (2).
[0052] The photovoltaic cell (2) is a perovskite thin film cell, which is scribed by laser as follows: Figure 4 and Figure 5 The light-transmitting groove (9) structure shown in the figure; the pattern layer (4) is a polyvinyl butyral film sprayed with a color pattern; the third film (8) is composed of ethylene-vinyl acetate copolymer; the first protective layer (6) is a front plate glass, which is composed of transparent conductive oxide and silicon dioxide; the second protective layer (7) is a back plate glass, which is composed of tempered glass.
[0053] The thickness of the first protective layer (6) is 3.2 mm, the thickness of the third adhesive film (8) is 0.7 mm, the thickness of the photovoltaic cell (2) is 0.1 mm, the thickness of the pattern layer (4) is 0.5 mm, and the thickness of the second protective layer (7) is 3.2 mm.
[0054] The width of the light-transmitting groove (9) is 0.6 mm, and the distance between two adjacent light-transmitting grooves (9) is 1 mm; the total area of the light-transmitting grooves (9) is 60% of the area of the photovoltaic cell (2).
[0055] Example 4
[0056] A light-transmitting photovoltaic component (1) having a structure as follows Fig.11 As shown, it comprises a layered structure electrically connected in sequence from bottom to top: a first protective layer (6), a third adhesive film (8), a photovoltaic cell (2), a first adhesive film (3), a pattern layer (4), a second adhesive film (5), and a second protective layer (7); a light-transmitting groove (9) is provided on the photovoltaic cell (2), and the light-transmitting groove (9) passes through the photovoltaic cell (2).
[0057] The photovoltaic cell (2) is a perovskite thin film cell, which is scribed by laser as follows: Figure 4 and Figure 5 The light-transmitting groove (9) structure shown in the figure; the pattern layer (4) is silk sprayed with a color pattern; the first adhesive film (3), the second adhesive film (5) and the third adhesive film (8) are composed of a polyolefin elastomer; the first protective layer (6) is the front plate glass, which is composed of silicon dioxide; the second protective layer (7) is the back plate glass, which is composed of silicon dioxide.
[0058] The thickness of the first protective layer (6) is 2.1 mm, the thickness of the third adhesive film (8) is 0.7 mm, the thickness of the photovoltaic cell (2) is 1 mm, the thickness of the first adhesive film (3) is 0.7 mm, the thickness of the pattern layer (4) is 0.3 mm, the thickness of the second adhesive film (5) is 0.7 mm, and the thickness of the second protective layer (7) is 3.2 mm.
[0059] The width of the light-transmitting groove (9) is 0.3 mm, and the distance between two adjacent light-transmitting grooves (9) is 1 mm; the total area of the light-transmitting grooves (9) is 35% of the area of the photovoltaic cell (2).
[0060] Experimental example
[0061] The photovoltaic cell with the light-transmitting groove structure and the light-transmitting photovoltaic module prepared in Example 2 were tested using an ultraviolet-visible spectrophotometer (UNICO UV-4800 model). The test results are as follows: Fig.12 As shown, the addition of the color pattern layer to the photovoltaic cell assembly having the structure of the present invention has little effect on the transmittance, and the transmittance can still reach more than 60%.
[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0063] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A light-transmitting photovoltaic module, characterized in that: The invention comprises a photovoltaic cell and a pattern layer which are stacked; the photovoltaic cell is provided with a light-transmitting groove; and the pattern layer is provided with colors and / or patterns.
2. The light-transmitting photovoltaic assembly according to claim 1, characterized in that: It also includes a first protective layer; the pattern layer is arranged between the photovoltaic cell and the first protective layer.
3. The light-transmitting photovoltaic assembly according to claim 1, characterized in that: It also includes a first adhesive film disposed between the photovoltaic cell and the pattern layer, and a second adhesive film and a first protective layer disposed in sequence on a side of the pattern layer away from the first adhesive film.
4. The light-transmitting photovoltaic assembly according to claim 1, characterized in that: It also includes a second protective layer; the pattern layer is arranged between the photovoltaic cell and the second protective layer, and a third adhesive film and the first protective layer are sequentially arranged on the side of the photovoltaic cell away from the pattern layer.
5. The light-transmitting photovoltaic assembly according to claim 1, characterized in that: It also includes a first adhesive film arranged between the photovoltaic cell and the pattern layer, a second adhesive film and a second protective layer arranged in sequence on the side of the pattern layer away from the first adhesive film, and a third adhesive film and a first protective layer arranged in sequence on the side of the photovoltaic cell away from the first adhesive film.
6. The light-transmitting photovoltaic assembly according to any one of claims 1 to 5, characterized in that: The light-transmitting groove passes through the photovoltaic cell; the light-transmitting groove includes a circular groove, a square groove or a mesh groove.
7. The light-transmitting photovoltaic assembly according to any one of claims 1 to 5, characterized in that: The total area of the light-transmitting grooves is 25-70% of the area of the photovoltaic cells.
8. The light-transmitting photovoltaic assembly according to any one of claims 1 to 5, characterized in that: The light transmittance of the light-transmitting photovoltaic component is 30% to 70%, and the reflectivity is 5% to 15%.
9. The light-transmitting photovoltaic assembly according to claim 5, characterized in that: The thickness of the first adhesive film is 0.3mm~1mm; the thickness of the second adhesive film is 0.1mm~1mm; the thickness of the third adhesive film is 0.3mm~1mm; the thickness of the first protective layer is 0.7mm~8mm; the thickness of the second protective layer is 1mm~8mm; the thickness of the pattern layer is 0.05mm~0.7mm.
10. The light-transmitting photovoltaic assembly according to any one of claims 1 to 5, characterized in that: The photovoltaic cell is at least one of a perovskite cell, a cadmium telluride cell, an organic photovoltaic cell, a CIGS cell, and a stacked cell.