CN202503011U - Polycrystalline silicon solar cell assembly - Google Patents
Polycrystalline silicon solar cell assembly Download PDFInfo
- Publication number
- CN202503011U CN202503011U CN 201220136951 CN201220136951U CN202503011U CN 202503011 U CN202503011 U CN 202503011U CN 201220136951 CN201220136951 CN 201220136951 CN 201220136951 U CN201220136951 U CN 201220136951U CN 202503011 U CN202503011 U CN 202503011U
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- CN
- China
- Prior art keywords
- silicon nitride
- solar
- layer
- antireflective coating
- solar cell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model relates to the technical field of solar cells, especially to a polycrystalline silicon solar cell assembly, which comprises a solar polycrystalline cell piece. The differences of the solar polycrystalline cell piece lie in that: its upper surface is plated with a first layer of silicon nitride antireflection film with a refractive index of 2.6-3.0 and thickness of 30-44 nanometers, the surface of the first layer of silicon nitride antireflection film is plated with a second layer of silicon nitride antireflection film with a refractive index of 1.9-2.4 and thickness of 35-70 nanometers, the second layer of silicon nitride antireflection film is upwardly provided with an EVA (ethylene-vinyl acetate) adhesive film and tempered glass sequentially, and the bottom of the solar polycrystalline cell piece is equipped with an EVA adhesive film and a backplane in order. The utility model adopts a design of double-layer silicon nitride antireflection films, increases the surface passivation effect of the solar cell, reduces solar cell surface reflectivity, and after encapsulation, no optical loss resulted from unmatched refractive indexes can be caused.
Description
Technical field
The utility model relates to technical field of solar batteries, especially a kind of polycrystalline solar module.
Background technology
In the solar battery process, the technology of surperficial antireflective film is a very important step, and it has determined directly how many sunlights solar cell can absorb.Traditional solar cell surface antireflective film is to adopt plating one deck silicon nitride film; Silicon nitride is that technology is simple, is easy to industrialization production as the characteristics of surperficial antireflective film; Cost is lower; But shortcoming also clearly is: on battery and assembly, the refractive index of silicon nitride film and thickness can't match optimum value to silicon nitride simultaneously as antireflective film, cause the assembly end after encapsulation, to have certain encapsulation loss; Because therefore the main optical property of considering silicon nitride film also can't reach best on passivation effect, cause battery efficiency loss to a certain extent simultaneously; And traditional silicon nitride antireflective film considers to exist bigger difference respectively from battery angle and assembly angle in the design of refractive index and thickness.
Summary of the invention
The goal of the invention of the utility model is: provide a kind of and can effectively reduce the solar battery surface reflectivity, improve passivation effect and the little polycrystalline solar module of encapsulation loss.
The utility model solves the technical scheme that its technical problem adopted: polycrystalline solar module; It comprises solar energy polycrystal battery sheet; It is characterized in that; It is 2.6～3.0 ground floor silicon nitride antireflective coating that the upper surface of said solar energy polycrystal battery sheet is coated with refractive index; It is 1.9～2.4 second layer silicon nitride antireflective coating that ground floor silicon nitride antireflective coating surface is coated with refractive index, and the thickness of said ground floor silicon nitride antireflective coating is 30～44 nanometers, and the thickness of said second layer silicon nitride antireflective coating is 35～70 nanometers; Second layer silicon nitride antireflective coating upwards is disposed with EVA glued membrane, toughened glass, and the bottom of solar energy polycrystal battery sheet is disposed with EVA glued membrane, backboard.
The beneficial effect of the utility model is that the utility model has adopted double-deck silicon nitride antireflective coating design, has improved the solar cell surface passivation effect, reduces the solar cell surface reflectivity.Ground floor silicon nitride antireflective coating can take into full account passivation effect when technological design, the surface passivation effect of solar cell is improved, thereby promote battery efficiency.The refractive index of second layer silicon nitride antireflective coating and the refractive index of component package material are approaching, so the optical loss that can not match and cause because of refractive index after the encapsulation.
Description of drawings
Fig. 1 is the structural representation of a kind of polycrystalline solar module of the utility model.
Embodiment
Combine accompanying drawing that the utility model is done further detailed explanation now.
As shown in Figure 1; Polycrystalline solar module; Comprise solar energy polycrystal battery sheet 1, it is 2.6～3.0 ground floor silicon nitride antireflective coating 2 that the upper surface of said solar energy polycrystal battery sheet 1 is coated with refractive index, and it is 1.9～2.4 second layer silicon nitride antireflective coating 3 that ground floor silicon nitride antireflective coating 2 surfaces are coated with refractive index; The thickness of said ground floor silicon nitride antireflective coating 2 is 30～44 nanometers; The thickness of said second layer silicon nitride antireflective coating 3 is 35～70 nanometers, and second layer silicon nitride antireflective coating 3 upwards is disposed with EVA glued membrane 4, toughened glass 5, and the bottom of solar energy polycrystal battery sheet 1 is disposed with EVA glued membrane 4, backboard 6.
The undocumented detail of the utility model belongs to those skilled in the art's common practise.Under the situation that does not break away from its spirit and scope, can implement with the different mode of explanation with the explanation of above-mentioned certain embodiments.Therefore detail disclosed herein should not be construed as the restriction to the utility model, and it only teaches the representational basic mode of the various occupation modes of the utility model to the person of ordinary skill in the field.
Claims (1)
1. polycrystalline solar module; It comprises solar energy polycrystal battery sheet; It is characterized in that it is 2.6～3.0 ground floor silicon nitride antireflective coating that the upper surface of said solar energy polycrystal battery sheet is coated with refractive index, it is 1.9～2.4 second layer silicon nitride antireflective coating that ground floor silicon nitride antireflective coating surface is coated with refractive index; The thickness of said ground floor silicon nitride antireflective coating is 30～44 nanometers; The thickness of said second layer silicon nitride antireflective coating is 35～70 nanometers, and second layer silicon nitride antireflective coating upwards is disposed with EVA glued membrane, toughened glass, and the bottom of solar energy polycrystal battery sheet is disposed with EVA glued membrane, backboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136951 CN202503011U (en) | 2012-04-01 | 2012-04-01 | Polycrystalline silicon solar cell assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220136951 CN202503011U (en) | 2012-04-01 | 2012-04-01 | Polycrystalline silicon solar cell assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202503011U true CN202503011U (en) | 2012-10-24 |
Family
ID=47039618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220136951 Expired - Fee Related CN202503011U (en) | 2012-04-01 | 2012-04-01 | Polycrystalline silicon solar cell assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202503011U (en) |
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2012
- 2012-04-01 CN CN 201220136951 patent/CN202503011U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20130401 |