CN103681911B - Photovoltaic module - Google Patents
Photovoltaic module Download PDFInfo
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- CN103681911B CN103681911B CN201310750266.3A CN201310750266A CN103681911B CN 103681911 B CN103681911 B CN 103681911B CN 201310750266 A CN201310750266 A CN 201310750266A CN 103681911 B CN103681911 B CN 103681911B
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- diffusion layer
- photovoltaic module
- embossing face
- cell piece
- welding
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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
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- Condensed Matter Physics & Semiconductors (AREA)
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- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
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Abstract
The invention discloses a photovoltaic module, comprising a back board, a battery piece group and transparent glass which are connected in a sequentially stacking manner, wherein the battery piece group comprises a plurality of battery pieces which are distributed in an array manner, the battery piece is provided with a welding strip, the transparent glass comprises an embossed surface and a reflecting surface, the embossed surface right faces the battery pieces and is provided with a scattering layer, the scattering layer is positioned at the orthographic projection area of the welding strips opposite to the embossed surface, the scattering layer is used for reflecting sunlight entering the scattering layer to the reflecting surface, and the reflecting surface reflects the sunlight to the battery pieces. The photovoltaic module is provided with the scattering layer on the embossed surface of the transparent glass, and the scattering layer right faces the welding strips of the battery pieces, so that the sunlight entering the scattering layer is reflected to the battery pieces by the transparent glass, wherein the accumulated area of the welding strips on the photovoltaic module is 3%, and 3% area of the photovoltaic module is increased for absorbing luminous energy due to the arrangement of the scattering layer, and the economic benefit of the photovoltaic module is enhanced.
Description
Technical field
The present invention relates to photovoltaic solar cell field, more particularly, to a kind of photovoltaic module.
Background technology
Photovoltaic module is the core in solar power system, is also most important portion in solar power system
Point.Its effect is to convert solar energy into electrical energy, or is sent in accumulator and stores, or promotes loaded work piece.Photovoltaic module
By solar battery sheet (two kinds of specifications 125*125mm, 156*156mm, 124*124mm of full wafer etc.) or by laser cutting machine or
Composition combined by the solaode of the different size that steel-wire cutting machine is cut open, and they be encapsulated in one stainless
On steel, aluminum or other nonmetallic frames, install the backboard at glass above and the back side, be filled with nitrogen, sealing.Wherein, due to
The surface of solar battery sheet must be welded with the electrical cooperation in order to photovoltaic module and other devices for the welding, and the surface of welding
Relatively smooth so that when solar irradiation is incident upon on welding, the most of sunlight on its surface can be reflected by welding straight up,
Cannot reflex on cell piece, cause the waste of luminous energy it is impossible to effectively luminous energy be changed into electric energy.
Prior art general by welding is made rough, in order to preferable by light energy reflected to solaode
On piece, but, in actual use, which processing is more difficult above, needs higher technical merit.
Content of the invention
The technical problem to be solved is, provides that a kind of optical property is higher, processing is easier to and economical
The photovoltaic module that better results.
In order to solve above-mentioned technical problem, The embodiment provides a kind of photovoltaic module, described photovoltaic module bag
Include frame, the backboard stacking gradually connection, cell piece group and clear glass it is characterised in that described cell piece group include many
Individual cell piece, multiple described cell pieces are arranged in array, and described cell piece is provided with welding；Described clear glass includes relatively setting
The embossing face put and reflecting surface, just to described cell piece group, described embossing face is provided with diffusion layer, described embossing face in described embossing face
For the hair side of described clear glass, the light transmittance of described diffusion layer is 50%～70%, and described diffusion layer is located at described welding phase
Orthographic projection region for described embossing face；It is provided with spacing between two neighboring described cell piece and form the first gap, described pressure
Flower face is provided with another diffusion layer, and the light transmittance of another diffusion layer described is 50%～70%, another diffusion layer position described
In described first gap with respect to described embossing face orthographic projection region；The edge of described cell piece group and the edge of described frame
Between be provided with spacing formed the second gap, described embossing face is provided with another diffusion layer, the light transmittance of another diffusion layer described
For 50%～70%, another diffusion layer described is located at the orthographic projection region that described second gap is with respect to described embossing face, institute
State diffusion layer, another diffusion layer described and another diffusion layer described to be all used for reflexing to the sunlight being incident to from it
Described reflecting surface, described reflecting surface reflexes to described sunlight on described cell piece.Wherein, described diffusion layer is organic coating
Or inorganic coating, described diffusion layer is coated on described embossing face.
Wherein, described diffusion layer is thin film, and the material of described diffusion layer is polyurethane or polyacrylate, described astigmatism
Layer is pasted on described embossing face.
The photovoltaic module that the present invention provides passes through to arrange diffusion layer on the embossing face of clear glass, and described diffusion layer is just
Welding to described cell panel is so that the sunlight being incident to described diffusion layer reflexes to described battery in described clear glass
On piece, overcome direct because described welding is more smooth in prior art described sunlight is reflected away with 90 degree, cause
The waste of luminous energy, wherein, the welding accumulation area on described photovoltaic module reaches 3%, by the setting of described diffusion layer, increased
The absorption of the luminous energy of 3% area on described photovoltaic module, improves the economic benefit of described photovoltaic module.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, also may be used
So that other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of photovoltaic module provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is carried out clearly
Chu, it is fully described by.
Refer to Fig. 1, a kind of photovoltaic module 100 that embodiment of the present invention provides, described photovoltaic module 100 stacks gradually
Backboard 1, cell piece group 2 and the clear glass 3 connecting.
Described backboard 1 is located at the back side of described cell piece group 2, to 21 protections of cell piece and supporting role it is desirable to it has
There are reliable insulating properties, water preventing ability and resistance to ag(e)ing, the material of described backboard 1 is glass or resinous flat.In the present embodiment
In, because resin material has preferable thermoplasticity, and cost is relatively low, and the material of described backboard 1 is resinous flat.Certainly, exist
In other embodiments, described backboard 1 can also be glass.
Described cell piece group 2 includes multiple cell pieces 21, and multiple described cell pieces 21 are arranged in array, and two neighboring institute
State and be provided with spacing between cell piece 21, described cell piece 21 is provided with welding 21d.In the present embodiment, described cell piece group 2 is
Rectangle.The specification of multiple described cell pieces 21 is identical.Described cell piece 21 includes longitudinal edge 21a and horizontal edge 21b, a plurality of described vertical
While 21a formed described cell piece group 2 long while, a plurality of described horizontal edge 21b forms the minor face of described cell piece group 2.Two neighboring
It is provided with spacing between described cell piece 21 and form the first gap 21c.Wherein, the horizontal edge 21b of a described cell piece 21 with adjacent
The horizontal edge 21b of another described cell piece 21 between spacing be the first gap 21c, the longitudinal edge of a described cell piece 21
Spacing between 21a and the longitudinal edge 21a of another adjacent described cell piece 21 is also the first gap 21c.Described cell piece 21
Front on have many (can be 2,3,4,5,6 or more) bar main gate line (not shown), convergent belt (not shown) is welded to institute
State and described welding 21d is formed on a plurality of main gate line of cell piece 21, wherein, described convergent belt is the copper strips being enclosed with tin alloy.
By by ethylene-vinyl acetate copolymer (thylene-vinyl acetate copolymer abbreviation eva) thin film (not shown)
It is placed on described backboard 1 so that described eva thin film is placed in described backboard 1 and entirely between the reverse side of described cell piece group 2,
At a temperature of certain, described eva thin film is melted so that the stacking of described cell piece group 2 is connected on described backboard 1.Certainly, exist
In other embodiments, described eva film can also be with fluorinated ethylene propylene copolymer, fluorinated ethylene propylene copolymer or perfluoroethylene
Propylene (fluorinated ethylene propylene abbreviation fep) thin film replaces.Described welding 21d can also be according to described
Welding situation on photovoltaic module 100 and determine, such as described welding 21d can also by the thin grid on described cell piece 21,
Or convergent belt is formed.
Described clear glass 3 includes the embossing face 31 being oppositely arranged and reflecting surface 32, and described embossing face 31 is just to described electricity
Pond piece group 2.In the present embodiment, described embossing face 31 is the hair side of described clear glass 3.By by ethene-vinyl acetate altogether
Polymers (thylene-vinyl acetate copolymer abbreviation eva) thin film is placed on the front of described cell piece group 2, makes
Described eva thin film is placed in the front of described cell piece group 2 and entirely between described embossing face 31, at a certain temperature, will
Described eva thin film melts so that described embossing face 31 stacking is connected in described cell piece group 2.Certainly, in other embodiments
In, described eva film can also be with fluorinated ethylene propylene copolymer, fluorinated ethylene propylene copolymer or perfluoroethylene-propylene
(fluorinated ethylene propylene abbreviation fep) thin film replaces.
Described embossing face 31 is provided with diffusion layer 31a, and described diffusion layer 31a is located at described welding 21d with respect to described embossing
The orthographic projection region in face 31, described diffusion layer 31a is described anti-for reflexing to the sunlight 4 being incident to described diffusion layer 31a
Penetrate face 32, described reflecting surface 32 reflexes to described sunlight 4 on described cell piece 21.In the present embodiment, in order to ensure
Do not ensure the light-dispersing effect of described diffusion layer 31a on the premise of waste of materials, the size of described diffusion layer 31a is equal to described welding
The size of 21d.And, the light transmittance of described diffusion layer 31a is 50%～70%.Specifically, for the ease of processing, described astigmatism
Layer 31a is thin film, and described diffusion layer 31a is pasted on described embossing face 31.Wherein, the material of described diffusion layer 31a is poly- ammonia
Ester or polyacrylate etc..Described diffusion layer 31a is pasted on described embossing face 31, and just to described welding 21d so that
When sunlight 4 is irradiated on the position of the corresponding described welding 21d in described embossing face 31, described sunlight 4 reflexes to described anti-
Penetrate face 32, then reflex on described cell piece 21 through described reflecting surface 32, effectively light energy absorption gets off, and then by described
Photovoltaic module 100 is converted into electric energy.Certainly, in other embodiments, described diffusion layer 31a is coating, and described diffusion layer 31a applies
It is overlying on described embossing face 31.The material of described diffusion layer 31a is organic coating or inorganic coating.Such as, described astigmatism
Layer 31a can be following organic coating: acrylic resin paint, polyurethane coating, epoxy coating, phenolic resin coating,
Silicone resin coating, styrene-acrylate emulsion coating and all kinds of modified coating etc.；Described diffusion layer 31a can also be following inorganic painting
Material: oxidation aluminium paint, silicate paint, silica-sol wash etc..By using mask plate or directly by the painting of described diffusion layer 31a
It is overlying on described embossing face 31, and then requires to be solidified according to the condition of cure of coating, thus described diffusion layer 31a is processed
On described embossing face 31.The size of described diffusion layer 31a can also be slightly larger than or be slightly less than the size of described welding.
So that described photovoltaic module 100 preferably can absorb luminous energy, change into electric energy, described embossing face 31 is provided with
Diffusion layer 31a, described diffusion layer 31a is located at the orthographic projection region that described first gap 21c is with respect to described embossing face, described scattered
Photosphere 31a is used for for the sunlight 4 being incident to described diffusion layer 31a reflexing to described reflecting surface 32, and described reflecting surface 32 is by institute
State sunlight 4 to reflex on described cell piece 21.In the present embodiment, the size of described diffusion layer 31a is equal between described first
The size of gap 21c is so that preferably ensure the light-dispersing effect of described diffusion layer 31a on the premise of guarantee not waste of materials.And
And, the light transmittance of described diffusion layer 31a is 50%～70%.Specifically, for the ease of processing, described diffusion layer 31a is thin film,
Described diffusion layer 31a is pasted on described embossing face 31.Wherein, the material of described diffusion layer 31a is polyurethane or polypropylene
Acid esters etc..Described diffusion layer 31a is pasted on described embossing face 31, and just to described first gap 21c so that working as sunlight
When on 4 positions being irradiated in the corresponding described first gap 21c in described embossing face 31, described sunlight 4 reflexes to described reflecting surface
32, then reflex on described cell piece 21 through described reflecting surface 32, effectively light energy absorption is got off, and then pass through described photovoltaic
Assembly 100 is converted into electric energy.Certainly, in other embodiments, described diffusion layer 31a can be following organic coating: acrylic acid
Cold coating, polyurethane coating, epoxy coating, phenolic resin coating, silicone resin coating, styrene-acrylate emulsion coating and each
Class modified coating etc.；Described diffusion layer 31a can also be following inorganic coating: oxidation aluminium paint, silicate paint, Ludox apply
Material etc..By using mask plate or directly described diffusion layer 31a being coated on described embossing face 31, and then according to coating
Condition of cure requires to be solidified, thus described diffusion layer 31a is machined on described embossing face 31.In other embodiments,
Corresponding described diffusion layer 31a of described first gap 21c can also be separately provided, that is, can root on described photovoltaic module 100
Factually border service condition and choose whether to arrange corresponding described diffusion layer 31a of described welding 21d.
Described photovoltaic module 100 also includes frame (not shown), described backboard 1, described cell piece group 2 and described transparent
Glass 3 is all packaged in described frame, is provided with spacing and forms the between the edge of described cell piece group 2 and the edge of described frame
Two gaps (not shown).In the present embodiment, two described long while and during two described minor faces with described frame four respectively
It is provided with spacing between edge and form the second gap.
So that described photovoltaic module 100 further can absorb luminous energy, change into electric energy, described embossing face 31
It is provided with diffusion layer 31a, just to described second gap, described diffusion layer 31a is used for being incident to described astigmatism described diffusion layer 31a
The sunlight 4 of layer 31a reflexes to described reflecting surface 32, and described sunlight 4 is reflexed to described cell piece 21 by described reflecting surface 32
On.In the present embodiment, the size in the size of described diffusion layer 31a and described second gap match so that ensure not unrestrained
Preferably ensure the light-dispersing effect of described diffusion layer 31a on the premise of taking material.And, the light transmittance of described diffusion layer 31a is
50%～70%.Specifically, for the ease of processing, described diffusion layer 31a is thin film, and described diffusion layer 31a is pasted on described pressure
On flower face 31.Wherein, the material of described diffusion layer 31a is polyurethane or polyacrylate etc..Described diffusion layer 31a is pasted
On described embossing face 31, and just to described second gap so that when sunlight 4 is irradiated in described embossing face 31 correspondence described the
When on the position in two gaps, described sunlight 4 reflexes to described reflecting surface 32, then reflexes to described battery through described reflecting surface 32
On piece 21, effectively light energy absorption is got off, and then electric energy is converted into by described photovoltaic module 100.Certainly, implement other
Example in, described diffusion layer 31a can be following organic coating: acrylic resin paint, polyurethane coating, epoxy coating,
Phenolic resin coating, silicone resin coating, styrene-acrylate emulsion coating and all kinds of modified coating etc.；Described diffusion layer 31a is acceptable
For following inorganic coating: aoxidize aluminium paint, silicate paint, silica-sol wash etc..By using mask plate or directly by institute
State diffusion layer 31a to be coated on described embossing face 31, and then require to be solidified according to the condition of cure of coating, thus will be described
Diffusion layer 31a is machined on described embossing face 31.In other embodiments, described diffusion layer 31a can also be separately provided, that is, exist
Described photovoltaic module 100 is not provided with corresponding described diffusion layer 31a of described first gap 21c and/or described welding 21d phase
It is separately provided corresponding described diffusion layer 31a in described second gap, described first gap under corresponding described diffusion layer 31a
Corresponding described diffusion layer 31a in corresponding described diffusion layer 31a of 21c, described second gap and described welding 21d are relatively
The facilities of described diffusion layer 31a answered or compound mode determine according to practical situation.
When described photovoltaic module 100 starts to prepare: need to first the reverse side stacking of described cell piece group 2 be connected to described
On backboard 1, and described eva film is placed between described backboard 1 and described cell piece group 2, by described at a certain temperature
Eva film melts so that described cell piece group 2 is adhered on described backboard 1；Then by three described diffusion layer 31a respectively relatively
That answers is pasted on the corresponding position of described welding 21d in described embossing face 31, described first gap 21c and described second gap
On；And then the stacking of described embossing face 31 is connected in described cell piece group 2, and described eva film is placed in described cell piece
Between group 2 and described embossing face 31, melted so that described clear glass 3 is adhered to institute by described eva film at a certain temperature
State in back of the body cell piece group 2；Described followed by being all packaged in described backboard 1, described cell piece group 2 and described clear glass 3
In frame, then pour nitrogen-sealed.Welding 21d accumulation area on described photovoltaic module 100 reaches 3%, described first gap 21c
Reach 7% with the accumulation area in described second gap, by the setting of diffusion layer 31a described in three above so that described photovoltaic group
The luminous energy of the area of part 100 nearly 10% will not be wasted, and can change into electric energy, according to the power of described photovoltaic module 100
Calculate for 250w, be effectively increased using 5% calculating, described photovoltaic module 100 increases power 12.5w newly, has higher economy
Benefit.
The photovoltaic module 100 that the present invention provides passes through to arrange diffusion layer 31a on the embossing face 31 of clear glass 3, and institute
State the welding 21d just to described cell panel for diffusion layer 31a so that the sunlight 4 that is incident to described diffusion layer 31a reflex to described
Reflecting surface 32, described reflecting surface 32 reflexes to described sunlight 4 on described cell piece 21, overcomes in prior art by institute
State that welding 21d is more smooth and the direct waste described sunlight 4 being reflected away with 90 degree, causing luminous energy, wherein, described photovoltaic
Welding 21d accumulation area on assembly 100 reaches 3%, by the setting of described diffusion layer 31a, increased described photovoltaic module 100
On the luminous energy of 3% area absorption, improve the economic benefit of described photovoltaic module 100.
The above is the preferred embodiment of the present invention it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (3)
1. a kind of photovoltaic module, described photovoltaic module includes frame, the backboard stacking gradually connection, cell piece group and transparent glass
It is characterised in that described cell piece group includes multiple cell pieces, multiple described cell pieces are arranged in array glass, described cell piece
It is provided with welding；Described clear glass includes the embossing face being oppositely arranged and reflecting surface, and described embossing face is just to described cell piece
Group, described embossing face is provided with diffusion layer, and described embossing face is the hair side of described clear glass, and the light transmittance of described diffusion layer is
50%～70%, described diffusion layer is located at the orthographic projection region that described welding is with respect to described embossing face；Two neighboring described electricity
Be provided with spacing between the piece of pond and form the first gap, described embossing face is provided with another diffusion layer, another diffusion layer described saturating
Light rate is 50%～70%, and another diffusion layer described is located at the forward projection region that described first gap is with respect to described embossing face
Domain；It is provided with spacing between the edge of described cell piece group and the edge of described frame and forms the second gap, described embossing face is provided with
Another diffusion layer, the light transmittance of another diffusion layer described is 50%～70%, and another diffusion layer described is located at described the
Two gaps with respect to the orthographic projection region in described embossing face, described diffusion layer, another diffusion layer described and described another dissipate
Photosphere is all used for for the sunlight being incident to from it reflexing to described reflecting surface, and described sunlight is reflexed to by described reflecting surface
On described cell piece.
2. photovoltaic module as claimed in claim 1 it is characterised in that described diffusion layer be organic coating or inorganic coating,
Described diffusion layer is coated on described embossing face.
3. photovoltaic module as claimed in claim 1 it is characterised in that described diffusion layer be thin film, the material of described diffusion layer
For polyurethane or polyacrylate, described diffusion layer is pasted on described embossing face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750266.3A CN103681911B (en) | 2013-12-31 | 2013-12-31 | Photovoltaic module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310750266.3A CN103681911B (en) | 2013-12-31 | 2013-12-31 | Photovoltaic module |
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| CN103681911A CN103681911A (en) | 2014-03-26 |
| CN103681911B true CN103681911B (en) | 2017-02-01 |
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| CN201310750266.3A Active CN103681911B (en) | 2013-12-31 | 2013-12-31 | Photovoltaic module |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105789335B (en) * | 2014-12-24 | 2018-10-09 | 湖北联合天诚防伪技术股份有限公司 | A kind of film and its solar-electricity pool model for solar cell antireflection |
| US10541344B2 (en) * | 2015-01-06 | 2020-01-21 | Gcl System Integration Technology (Hong Kong) Limited | Texturing ribbons for photovoltaic module production |
| CN105007036A (en) * | 2015-07-07 | 2015-10-28 | 浙江正泰太阳能科技有限公司 | Solar photovoltaic curtain wall |
| CN105679872A (en) * | 2016-04-14 | 2016-06-15 | 董友强 | Solar cell module with plurality of reflecting layers |
| CN106449840B (en) * | 2016-12-22 | 2018-04-10 | 苏州高德辰光电科技有限公司 | A kind of photovoltaic module reflectance coating and photovoltaic module |
| CN106784096B (en) * | 2017-01-21 | 2018-03-30 | 欧贝黎新能源科技股份有限公司 | A kind of diode-built-in photovoltaic module |
| CN106950626B (en) * | 2017-05-08 | 2021-08-06 | 苏州高德辰光电科技有限公司 | Light reflection film, manufacturing method thereof and photovoltaic cell assembly |
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| CN102544174A (en) * | 2012-01-06 | 2012-07-04 | 南通美能得太阳能电力科技有限公司 | Solar cell assembly for increasing light energy utilization ratio |
| CN202487632U (en) * | 2012-02-24 | 2012-10-10 | 嘉兴优太太阳能有限公司 | Marginal-condensation-type photovoltaic module in tracking-type solar battery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3738129B2 (en) * | 1998-04-14 | 2006-01-25 | 三洋電機株式会社 | Solar cell module |
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| US6274860B1 (en) * | 1999-05-28 | 2001-08-14 | Terrasun, Llc | Device for concentrating optical radiation |
| CN102544174A (en) * | 2012-01-06 | 2012-07-04 | 南通美能得太阳能电力科技有限公司 | Solar cell assembly for increasing light energy utilization ratio |
| CN202487632U (en) * | 2012-02-24 | 2012-10-10 | 嘉兴优太太阳能有限公司 | Marginal-condensation-type photovoltaic module in tracking-type solar battery system |
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