CN221262389U - Solar cell module with high light utilization rate - Google Patents
Solar cell module with high light utilization rate Download PDFInfo
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- CN221262389U CN221262389U CN202322933175.5U CN202322933175U CN221262389U CN 221262389 U CN221262389 U CN 221262389U CN 202322933175 U CN202322933175 U CN 202322933175U CN 221262389 U CN221262389 U CN 221262389U
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- solar cell
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- utilization
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 52
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229920000098 polyolefin Polymers 0.000 claims description 7
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 210000001624 hip Anatomy 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 238000005538 encapsulation Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical group [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 230000031700 light absorption Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a solar cell module with high light utilization rate, which comprises a back plate, solar cells arranged on the back plate and a packaging layer arranged on the solar cells, wherein a composite reflection film layer is arranged between the back plate and the solar cells, and a light absorption structure is arranged on the surface of the packaging layer in a concave manner. The solar cell module with high light utilization rate has the characteristics of high reflection light efficiency utilization rate, long service life and strong process operability.
Description
Technical Field
The utility model relates to the technical field of solar cell photovoltaic modules, in particular to a solar cell module with high light utilization rate.
Background
Photoelectric conversion efficiency is a key index of a solar cell module, and a packaging process or structure is an important method for improving the photoelectric conversion efficiency of the solar cell module. The packaging layers of the traditional glass packaging and glue dripping packaging processes are of plane layered structures, after sunlight irradiates the packaging layers, transmitted light is effectively utilized, reflected light is directly emitted outwards, solar energy is wasted, and the defect of improving the solar energy utilization rate is limited. The Chinese patent CN215771172U discloses a solar cell module with high light utilization rate, which comprises a solar cell, wherein a graphene film layer is arranged on one side or two sides of the solar cell in a spraying manner, an epoxy resin packaging layer is arranged on the surface of the graphene film layer, and a serrated light secondary absorption structure is pressed on the surface of the epoxy resin packaging layer.
In the utility model, the serrated light secondary absorption structure can form an optical suede on the surface of the epoxy resin packaging layer, when one beam of light projects an incident point, reflected light and refraction light entering the battery piece are generated, the reflected light can be continuously projected to another incident point of another serrated surface, secondary reflected light and refraction light entering the battery piece are generated, and the utilization of the reflected light is effectively improved. However, only part of light rays of the reflected light can be utilized in the optical suede, and the angle of the serrated surface directly influences the secondary incident angle of the reflected light, so that the secondary utilization rate of the reflected light is only about 11%. To be lifted.
Disclosure of utility model
The utility model aims to provide a solar cell module with high light utilization rate, which has the characteristics of high reflection light efficiency utilization rate, long service life and strong process operability.
The utility model can be realized by the following technical scheme:
The utility model discloses a solar cell module with high light utilization rate, which comprises a back plate, solar cells arranged on the back plate and a packaging layer arranged on the solar cells, wherein a composite reflection film layer is arranged between the back plate and the solar cells, and a light absorption structure is arranged on the surface of the packaging layer in a concave manner.
Further, the composite reflective film layer comprises a polyolefin film layer and an aluminum film layer plated on the surface of the polyolefin film layer. Through setting up the aluminium rete, the aluminium rete can adopt the mode setting of vacuum evaporation, and its reflectivity to light is up to more than 95%, has effectively guaranteed the utilization ratio of light.
Further, the light absorbing structure is an isosceles trapezoid opening structure which is adjacently arranged, and the width of an upper bottom opening is smaller than that of a lower bottom. By forming an isosceles trapezoid structure, light rays with different angles can be incident from the upper bottom of the narrow opening and limited in the trapezoid structure, and are effectively absorbed through multiple reflections and refractions.
Further, in the isosceles trapezoid opening structure, the included angle between the waist and the lower bottom is 30-60 degrees, so that a good inclined space is formed, and light rays entering the trapezoid structure are prevented from being emitted outwards as much as possible.
Further, the surface of the aluminum film layer is also provided with a protective layer, and the protective layer is a siloxane coating, a self-cleaning coating and/or an anti-scratch coating, so that the aluminum film layer has better weather resistance and prolongs the service life.
Further, the thickness of the protective layer is 1-5 mu m, so that the protective layer has a good protective effect and can avoid the influence on light transmission caused by the excessive thickness.
Further, in the isosceles trapezoid opening structure, the inner walls of the two waists are coated with the internal reflection coating, and the thickness of the internal reflection coating is 1-5 mu m, so that the isosceles trapezoid opening structure has a good protection effect and avoids the influence on light transmission caused by excessive thickness.
Further, the connection part between the isosceles trapezoid opening structures which are adjacently arranged is provided with a semicircular concave structure, so that the space on the surface of the packaging layer is fully utilized, and the light utilization rate is improved.
Furthermore, the solar cell is a monocrystalline silicon solar cell or a polycrystalline silicon solar cell, and can be flexibly selected in combination with practice.
Further, the packaging layer is an epoxy resin packaging layer or a polyurethane packaging layer, and has high transparency and good packaging effect.
The solar cell module with high light utilization rate has the following beneficial effects:
The first, reflected light utilization rate is high, through light absorption structure and compound reflective film layer that concave set up, incident light is limited in the light absorption structure effectively, through multiple reflection and refraction, is absorbed effectively finally, has promoted the utilization of the reflected light, has promoted the solar energy utilization rate;
Secondly, the service life is long, the composite reflecting film layer is arranged between the back plate and the solar cell and is tightly combined with the back plate and the solar cell, so that the influence of direct irradiation of light on the weather resistance of the outer layer is avoided, and the service life of the solar cell is prolonged;
Thirdly, the process operability is strong, the light absorbing structure is arranged on the surface of the packaging layer, and the injection molding processing foundation of most resin materials of the packaging layer in the prior art can be fully utilized, so that the molding control is realized.
Drawings
FIG. 1 is a schematic diagram of a solar module with high light utilization in accordance with an embodiment 1 of the present utility model;
The reference numerals include: 1. a back plate; 2. a composite reflective film layer; 3. a solar cell; 4. an encapsulation layer; 21. a polyolefin film layer; 22. an aluminum film layer; 23. a protective layer; 41. a light absorbing structure; 42. a concave structure.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the following further details of the present utility model will be described with reference to examples and drawings.
As shown in fig. 1, the utility model discloses a solar cell module with high light utilization rate, which comprises a back plate 1, a solar cell 3 arranged on the back plate 1, and an encapsulation layer 4 arranged on the solar cell 3, wherein a composite reflection film layer 2 is arranged between the back plate 1 and the solar cell 3, and a light absorption structure 41 is concavely arranged on the surface of the encapsulation layer 4.
As shown in fig. 1, in a specific structure, the composite reflective film layer 2 includes a polyolefin film layer 21 and an aluminum film layer 22 plated on the surface of the polyolefin film layer, and meanwhile, a protective layer 23 is further provided on the surface of the aluminum film layer 22, wherein the protective layer is a siloxane coating, a self-cleaning coating and/or an anti-scratch coating, and the thickness of the protective layer is 1-5 μm.
In the light absorbing structure, as shown in fig. 1, the light absorbing structure 41 is a plurality of isosceles trapezoid-shaped opening structures arranged adjacently, and the width of the opening at the upper bottom is smaller than that of the lower bottom. Meanwhile, a semicircular concave structure 42 is provided at the junction between the adjacently disposed isosceles trapezoid opening structures. Specifically, in the isosceles trapezoid opening structure, the angle between the waist and the lower base is 30 ° to 60 °.
In the present utility model, in order to secure the light utilization rate, the inner walls of both waists thereof are coated with an internal reflection coating layer having a thickness of 1-5 μm in the isosceles trapezoid opening structure.
In the utility model, the selection of the solar cell and the packaging layer is flexible, and the solar cell is a monocrystalline silicon solar cell or a polycrystalline silicon solar cell. The packaging layer is an epoxy resin packaging layer or a polyurethane packaging layer
In the present utility model, compared with the case that about 11% of the secondary reflected light may undergo tertiary reflection and refraction in the CN215771172U in the prior art, the reflected light of the present utility model is effectively reduced and fully utilized, and the light in the light absorbing structure is substantially fully utilized in multiple reflections and refractions.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way; those skilled in the art will readily appreciate that the present utility model may be implemented as shown in the drawings and described above; however, those skilled in the art should not depart from the scope of the utility model, and make various changes, modifications and adaptations of the utility model using the principles disclosed above; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the present utility model.
Claims (10)
1. The utility model provides a solar module that light utilization is high, includes backplate, sets up the solar wafer on the backplate, sets up the encapsulation layer at the solar wafer, its characterized in that: and a composite reflecting film layer is arranged between the backboard and the solar cell, and a light absorbing structure is concavely arranged on the surface of the packaging layer.
2. The high light utilization solar cell module of claim 1, wherein: the composite reflecting film layer comprises a polyolefin film layer and an aluminum film layer plated on the surface of the polyolefin film layer.
3. The high-light-utilization solar cell module of claim 2, wherein: the light absorbing structure is an isosceles trapezoid opening structure which is arranged adjacently, and the width of an upper bottom opening is smaller than that of a lower bottom.
4. A solar cell module with high light utilization according to claim 3, wherein: in the isosceles trapezoid opening structure, the included angle between the waist and the lower bottom is 30-60 degrees.
5. The high-light-utilization solar cell module of claim 4, wherein: the surface of the aluminum film layer is also provided with a protective layer, and the protective layer is a siloxane coating, a self-cleaning coating and/or an anti-scratch coating.
6. The high-light-utilization solar cell module of claim 5, wherein: the thickness of the protective layer is 1-5 mu m.
7. The high-light-utilization solar cell module of claim 6, wherein: in the isosceles trapezoid opening structure, the inner walls of the two waists are coated with an internal reflection coating, and the thickness of the internal reflection coating is 1-5 μm.
8. The high-light-utilization solar cell module of claim 7, wherein: the joint between the isosceles trapezoid opening structures which are adjacently arranged is provided with a semicircular concave structure.
9. The high-light-utilization solar cell module of claim 8, wherein: the solar cell is a monocrystalline silicon solar cell or a polycrystalline silicon solar cell.
10. The high-light-utilization solar cell module of claim 8, wherein: the packaging layer is an epoxy resin packaging layer or a polyurethane packaging layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322933175.5U CN221262389U (en) | 2023-10-31 | 2023-10-31 | Solar cell module with high light utilization rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322933175.5U CN221262389U (en) | 2023-10-31 | 2023-10-31 | Solar cell module with high light utilization rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221262389U true CN221262389U (en) | 2024-07-02 |
Family
ID=91630430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322933175.5U Active CN221262389U (en) | 2023-10-31 | 2023-10-31 | Solar cell module with high light utilization rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221262389U (en) |
-
2023
- 2023-10-31 CN CN202322933175.5U patent/CN221262389U/en active Active
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