CN208923166U - A kind of two-sided photovoltaic module - Google Patents
A kind of two-sided photovoltaic module Download PDFInfo
- Publication number
- CN208923166U CN208923166U CN201821556779.5U CN201821556779U CN208923166U CN 208923166 U CN208923166 U CN 208923166U CN 201821556779 U CN201821556779 U CN 201821556779U CN 208923166 U CN208923166 U CN 208923166U
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- CN
- China
- Prior art keywords
- double
- reflecting layer
- photovoltaic module
- sided photovoltaic
- back shroud
- Prior art date
- 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.)
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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
- Y02E10/52—PV systems with concentrators
Abstract
The utility model discloses a kind of two-sided photovoltaic modulies, from top to bottom successively include: front shroud, packaging adhesive film, double-side cell string and back shroud；Reflecting layer is provided between the back shroud and double-side cell string；Double-side cell string connects multiple cell pieces by welding and forms, and the back side of all cell pieces is at least blocked in reflecting layer.The component coats one layer of long wave reflective coating on back shroud, it solves the problem of to be directed through double-side cell piece after light enters component, the long-wave band light for penetrating double-side cell piece is reflected back cell piece, double absorption is carried out, by lifting assembly to the utilization rate of incident light come the output power of lifting assembly.
Description
Technical field
The utility model belongs to photovoltaic technology field, in particular to a kind of two-sided photovoltaic module.
Background technique
One of the difference of double-side cell and single side battery is back surface field, and the back surface field of single side battery is covered comprehensively by aluminium, double
Face battery is made of local aluminum grid line.Al-BSF has high reflectance, therefore the single side battery covered comprehensively by Al-BSF
Under conditions of illumination, the long-wave band light for the 900nm~1100nm not absorbed by battery can be reflected by Al-BSF and be wired back
Pond carries out double absorption, is converted further into electric energy.The presence of Al-BSF can increase light path, improve battery to long-wave band light
Absorption.And the double-side cell being made of local aluminum grid line back surface field, in illumination, the long-wave band light of 900nm~1100nm can be worn
Saturating cell piece, directly slatterns.
There is reflection unit of the setting for reflected sunlight below component in the prior art, but the structure transmitted light reaches
It to before reflection ground, is partially absorbed or is reflected by back shroud, only fraction light is reflected back cell piece quilt by reflection unit
It is absorbed and utilized.The utilization rate of whole glazing is not still high, there is the phenomenon that very big waste light source.
Utility model content
The utility model provides a kind of two-sided photovoltaic module aiming at the problem that long-wave band light penetrates double-side cell piece, should
Component coats one layer of long wave reflecting layer on back shroud, solves the problem of to be directed through double-side cell piece after light enters component,
The long-wave band light for penetrating double-side cell piece is reflected back cell piece, carries out double absorption, the utilization by lifting assembly to incident light
Rate carrys out the output power of lifting assembly.
In order to realize the utility model aim, adopt the technical scheme that:
A kind of two-sided photovoltaic module, comprising: front shroud, double-side cell string and back shroud；Double-side cell string is by multiple electricity
Pond piece is composed in series, and double-side cell string is arranged between front shroud and back shroud, is provided between back shroud and double-side cell string
Reflecting layer；At least block the back side of each cell piece in reflecting layer.
The reflecting layer is reflectance coating, and reflectance coating is coated on back shroud.
The material of the reflectance coating is zirconium oxide or titanium oxide.
The reflecting layer be reflectance coating, reflectance coating by glue be bonded or laminating technology be encapsulated in double-side cell string with
Between back shroud.
The material in the reflecting layer is titanium oxide Si oxide compound film or the tin oxide Si oxide compound film for mixing F.
The thickness in the reflecting layer is not less than 3nm.
The reflecting layer includes vacancy section and blocked area, and each cell piece back side is blocked in blocked area, and vacancy section setting exists
Region between cell piece.
The reflecting layer covers entire back shroud.
Compared with prior art, the utility model has the beneficial effects that
The two-sided photovoltaic module of the utility model will penetrate double-side cell piece by the way that reflecting layer is arranged on back shroud
Sunlight is reflected into inside cell piece, promotes Double-sided battery pack to the utilization rate of light, to promote the output work of double-side assembly
Rate.
The reflecting layer covered using full wafer, can also have certain reflection energy to the light for being incident on non-battery panel region
Power.Meanwhile reflecting layer also can solve the leakage problem in cell piece gap in component, battery strings gap and module edge.
Detailed description of the invention
Fig. 1: the two-sided photovoltaic module sectional schematic diagram of an embodiment of the present invention；
Back shroud sectional schematic diagram in Fig. 2: Fig. 1 with reflective coating；
In figure, 1 is front shroud, and 2 be packaging adhesive film, and 3 be double-side cell piece, and 4 be reflecting layer, and 5 be back shroud.
Specific embodiment
The preferred embodiment that according to the present invention will be described in detail below with reference to the accompanying drawings.
A kind of two-sided photovoltaic module of the utility model, structure such as Fig. 1, including front shroud 1, packaging adhesive film 2, double-side cell
Piece 3, the back shroud 5 with reflecting layer 4.Packaging adhesive film 2 by front shroud 1, double-side cell piece 3, with the back shroud 5 in reflecting layer 4
It is encapsulated as photovoltaic module.The material of back shroud can be glass or polymer material.
When illumination, light passes through front shroud 1 and packaging adhesive film 2, is irradiated on double-side cell piece 3, part light is by cell piece
It absorbs, is converted into electric energy, the long-wave band light of 900nm~1100nm penetrates double-side cell piece 3, is irradiated to the rear cover with reflecting layer 4
On plate 5,4 times cell pieces are reflected through reflective coating, cell piece double absorption is converted into electric energy.In addition, portion of incident light is through non-electrical
Pond panel region shines directly on reflecting layer 4, enters double-side cell piece 3 with back reflection, is converted into electric energy.
As shown in Fig. 2, reflecting layer 4 can choose reflective coating, it is applied directly on back shroud 5, above-mentioned reflective coating packet
It includes but is not limited to the reflection zirconium oxide of 900nm~1100nm long-wave band light, titanium oxide, titanium oxide Si oxide compound film or mix F's
The thickness of tin oxide Si oxide compound film, above-mentioned reflective coating is not less than 3nm.
Preferably, above-mentioned reflective coating can also be substituted with reflectance coating, by glue paste or component lamination technique,
It is encapsulated into component, realizes the reflex of light.
Preferably, the shape in above-mentioned reflecting layer 3 can be netted, be positioned only at battery panel region, be also possible to rectangular
Body shape covers entire back shroud.Reflective coating also can solve cell piece gap in component, battery strings gap and module edge
Leakage problem.
Preferably, the material of back shroud can be glass, be also possible to polymer material.
The principles of the present invention are as follows: reflective coating is set on back shroud, and the light of 900nm~1100nm penetrates two-sided electricity
After the piece of pond, cell piece, double absorption are reflected back through reflective coating.
Relative to the design structure for playing reflex by the way that reflection ground is arranged below double-side assembly, the utility model
What is proposed is arranged the reflecting layer of 900nm~1100nm transmitted light on back shroud, increases the reflection path of transmitted light, enhances
Light is absorbed and utilized, thus the output power of lifting assembly.
In addition, the above embodiment of the utility model is example, have described in claims with the utility model
Technical idea be allowed to identical method and play the technical solution of identical function and effect, be all contained in the utility model.
Claims (8)
1. a kind of two-sided photovoltaic module characterized by comprising front shroud (1), double-side cell string and back shroud (5)；Two-sided electricity
Pond string is composed in series by multiple cell pieces (3), and double-side cell string is arranged between front shroud (1) and back shroud (5), back shroud
(5) reflecting layer (4) are provided between double-side cell string；At least block the back side of each cell piece (3) in reflecting layer (4).
2. a kind of two-sided photovoltaic module according to claim 1, which is characterized in that the reflecting layer (4) is that reflection applies
Layer, reflectance coating are coated on back shroud (5).
3. a kind of two-sided photovoltaic module according to claim 2, which is characterized in that the material of the reflectance coating is oxygen
Change zirconium or titanium oxide.
4. a kind of two-sided photovoltaic module according to claim 1, which is characterized in that the reflecting layer (4) is reflectance coating,
Reflectance coating is bonded by glue or laminating technology is encapsulated between double-side cell string and back shroud (5).
5. a kind of two-sided photovoltaic module according to claim 4, which is characterized in that the material of the reflecting layer (4) is oxygen
Change silicon oxide composite membrane or mixes the tin oxide Si oxide compound film of F.
6. a kind of two-sided photovoltaic module described in -5 any one according to claim 1, which is characterized in that the reflecting layer
(4) thickness is not less than 3nm.
7. a kind of two-sided photovoltaic module according to claim 1, which is characterized in that the reflecting layer (4) includes hollow out
Each cell piece back side is blocked in area and blocked area, blocked area, and the region between cell piece is arranged in vacancy section.
8. a kind of two-sided photovoltaic module according to claim 1, which is characterized in that after reflecting layer (4) covering is entire
Cover board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821556779.5U CN208923166U (en) | 2018-09-21 | 2018-09-21 | A kind of two-sided photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821556779.5U CN208923166U (en) | 2018-09-21 | 2018-09-21 | A kind of two-sided photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208923166U true CN208923166U (en) | 2019-05-31 |
Family
ID=66706682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821556779.5U Active CN208923166U (en) | 2018-09-21 | 2018-09-21 | A kind of two-sided photovoltaic module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208923166U (en) |
-
2018
- 2018-09-21 CN CN201821556779.5U patent/CN208923166U/en active Active
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