CN103367493A - Photovoltaic assembly - Google Patents
Photovoltaic assembly Download PDFInfo
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- CN103367493A CN103367493A CN2012100964915A CN201210096491A CN103367493A CN 103367493 A CN103367493 A CN 103367493A CN 2012100964915 A CN2012100964915 A CN 2012100964915A CN 201210096491 A CN201210096491 A CN 201210096491A CN 103367493 A CN103367493 A CN 103367493A
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- layer
- cell panel
- photovoltaic module
- material layer
- backboard
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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
Abstract
The invention discloses a photovoltaic assembly. The photovoltaic assembly comprises a solar panel (1) for photovoltaic conversion, a glass plate (2) and a back plate (3), wherein the glass plate (2) and the back plate (3) are used for packaging the solar panel (1), the glass plate (2) is located above the solar panel (1), and the back plate (3) is located below the solar panel (1). The back plate (3) comprises a central area (31) for bearing the battery panel (2) and an edge area (32) extending toward the periphery from the central area (31). The back plate (3) comprises a reflective layer (41) capable of covering the edge area (32). As the back plate provided by the invention is provided with the reflective layer, so that sunlight irradiated in the edge area can be reflected to the glass plate, and the sunlight is collected on the solar panel again through being reflected and refracted by the glass plate, thereby effectively increasing the sunlight collecting rate of the solar panel, and improving the efficiency of power generation.
Description
Technical field
The present invention relates to the solar energy power generating field, particularly, relate to a kind of photovoltaic module.
Background technology
In recent years, solar energy power generating is rapid as a kind of regenerative resource energy development of cleaning.Wherein, photovoltaic module is the critical component of photovoltaic generation.In the photovoltaic module in the prior art, can gather cell panel that sunlight generates electricity usually by preposition glass plate and rearmounted backboard encapsulation.Wherein, cell panel can be the electrooptical devices such as crystal silicon battery plate, and this cell panel can pass through the material package such as ethylene vinyl acetate polymer (EVA glued membrane) between glass plate and backboard.Thereby, gather sunlight by cell panel and carry out opto-electronic conversion, to carry out photovoltaic generation.
Summary of the invention
The purpose of this invention is to provide a kind of photovoltaic module, this photovoltaic module generating efficiency is higher.
To achieve these goals, the invention provides a kind of photovoltaic module, this photovoltaic module comprises glass plate and the backboard for the cell panel of opto-electronic conversion and this cell panel of encapsulation, described glass plate is positioned at the top of described cell panel, described backboard is positioned at the below of described cell panel, described backboard comprise the center of carrying described cell panel and from this center to around the marginal zone of extending, wherein, described backboard comprises the reflector layer that can cover described marginal zone.
Preferably, the reflecting rate of described reflector layer is greater than 85%.
Preferably, described backboard comprises the transparent insulating layer that contacts with described cell panel and is positioned at the basic unit of this transparent insulating layer below that described reflector layer is aluminium powder layer or the aluminium alloy bisque that is sprayed in the described basic unit.
Preferably, described basic unit is the elasticity polymer material layer.
Preferably, described basic unit comprises the first material layer that carries described reflector layer, and this first material layer is the pet material layer.
Preferably, described basic unit comprises the second material layer that carries described the first material layer, and this second material layer is polyvinylidene fluoride material layer or polyvinyl alcohol layer or compound fluoroplastic layer.
Preferably, described photovoltaic module is included as the encapsulated layer of ethylene vinyl acetate polymer material layer, and this encapsulated layer lays respectively between described glass plate and the described cell panel, and between described backboard and the described cell panel.
Pass through technique scheme, owing to be provided with reflector layer on the backboard of the present invention, the sunlight that shines the marginal zone can be reflexed to glass plate, this sunlight in glass plate through reflection and refraction again on the collected cell panel, effectively increase the daylight rate of cell panel, thereby improved generating efficiency.
Other features and advantages of the present invention will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide a further understanding of the present invention, and consists of the part of specification, is used from explanation the present invention with following embodiment one, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the plan structure schematic diagram of the photovoltaic module that provides of the preferred embodiment for the present invention;
Fig. 2 is the side-looking structural representation of the photovoltaic module that provides of the preferred embodiment for the present invention;
Fig. 3 is the structural representation of backboard provided by the invention.
Description of reference numerals
1 cell panel, 2 glass plates
3 backboards, 5 encapsulated layers
32 marginal zones, 31 centers
41 reflector layers, 42 transparent insulating layers
43 basic units, 44 first material layers
45 second material layers
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the present invention, is not limited to the present invention.
In the present invention, do not doing in the situation of opposite explanation, the noun of locality of use is normally undefined in the normal situation about using of photovoltaic module provided by the invention such as " upper and lower ", and namely glass plate is upper, backboard is lower, particularly can referring to figs. 2 and 3 shown in page.
As shown in Figure 1 to Figure 3, the invention provides a kind of photovoltaic module, this photovoltaic module comprises glass plate 2 and the backboard 3 for the cell panel 1 of opto-electronic conversion and this cell panel 1 of encapsulation, glass plate 2 is positioned at the top of cell panel 1, backboard 3 is positioned at the below of cell panel 1, backboard 3 comprise the center 31 of carrying cell panel 2 and from this center 31 to around the marginal zone 32 of extending, namely cell panel 2 not exclusively covers whole back plates 3, this also brings condition for the following design of the present invention.Wherein preferably, as shown in Figure 2, cell panel 1 is by encapsulated layer 5 encapsulation, this encapsulated layer lays respectively between glass plate 2 and the cell panel 1, and the encapsulated layer 5 between backboard 3 and the cell panel 2, wherein preferably, this encapsulated layer is the ethylene vinyl acetate polymer material layer, it is the EVA adhesive film material, wherein those skilled in the art can carry out various distortion and improvement to encapsulated layer 5 and EVA adhesive film material, and for example the upper strata glued membrane can adopt high light transmittance EVA, and lower floor can adopt resistance to ag(e)ing EVA, as long as can finish purpose of the present invention, the present invention does not limit.
In addition, cell panel 5 can adopt the photoelectric conversion devices such as crystal-silicon battery slice common in this area, also is provided with busbar known in those skilled in the art and welding on it, carries out solar energy power generating to realize gathering sunlight.Owing to do not relate to improvement part of the present invention, do not do too much at this and give unnecessary details.
Wherein, in order to realize purpose of the present invention, as shown in Figures 2 and 3, backboard 3 comprises the reflector layer 41 that can cover marginal zone 32.Therefore, when sunlight shone the marginal zone 32 of cell panel 1 and backboard 3 through glass plate 2, the cell panel 1 among the present invention can equally with cell panel of the prior art carry out opto-electronic conversion, and finishes photovoltaic generation.And be arranged on the reflector layer 41 on the backboard 3 among the present invention owing to can cover marginal zone 32, therefore the sunlight that is radiated on this reflector layer 41 can be reflected back glass plate 2 again, and this part sunlight is interior through reflecting and reflecting again on the collected cell panel 1 at glass plate 2, therefore can effectively increase the daylight rate of cell panel 1, thereby improve the generating efficiency of whole photovoltaic module.
Beyond thoughtly in addition be, through test, after reflector layer 41 reflection and glass plate 1 can occur to reflect and the sunlight spectrum that reflects wider, more can be near infrared and ultra-violet (UV) band, therefore can further increase the generating efficiency of cell panel 1, especially in the insufficient situation of sunlight, this advantage is more obvious.
Need to prove, the execution mode that can finish technique scheme has multiple, such as the material of reflector layer 3 and set-up mode etc., therefore for convenience of description the present invention, in this introduction preferred implementation wherein, this preferred implementation only is used for explanation the present invention, is not limited to the present invention.
Wherein, the reflecting rate that reflector layer among the present invention has is more better near 100%, as long as this reflecting rate depends on the factors such as the density of setting, thickness of reflector layer material, in preferred implementation of the present invention, consider processing cost and efficient, the reflecting rate of the reflector layer that adopts is greater than 85%, more preferably greater than 90%.
Particularly, in preferred implementation as shown in Figures 2 and 3, backboard 3 comprises the transparent insulating layer 42 that contacts with cell panel 1 and the basic unit 43 that is positioned at these transparent insulating layer 42 belows, and wherein, reflector layer 3 is for being sprayed on the aluminium powder layer in the basic unit 3.Be that reflector layer 41 is integrally formed on the upper surface of basic unit 43; it can cover center 31 and the marginal zone 32 of backboard 3; what those skilled in the art can expect certainly is; aluminium powder only is sprayed on the basic unit 43 corresponding marginal zones 32 also can finish purpose of the present invention, all drops in protection scope of the present invention for this type of change.In addition, except aluminium powder, also can spray other reflectorized materials known in those skilled in the art, such as reflectorized materials such as Al alloy powder material such as aluminium silver powder.The spraying coating process of herein mentioning is the common technique in this area, for example in the technical process of the aluminium silver powder packaging bag of making connection with wrapping of piece as seen, therefore, this reflector layer 41 is easy to process.In addition, owing to be provided with transparent insulating layer 42, sunlight can shine on the reflector layer 41, and the aluminium powder material not can with cell panel 1 phenomenon that is short-circuited.Wherein, this insulating material can be selected various transparent plastic materials, and the present invention does not limit this.
For easily manufactured, save cost in addition, preferably, basic unit 43 can be various elasticity polymer material layers.Namely can use the various materials such as flexible plastics, resin that have, wherein pass through the elasticity of these macromolecular materials, can effectively control reflector layer 41 at the metaboly that risen by the heat that solar radiation occured, so that the photovoltaic module globality is better, structure is more stable.
Wherein preferably, basic unit 43 can comprise the first material layer 44 that carries reflector layer 41, this first material layer 44 is the pet material layer, it is the PET material layer, the PET material has good physical and mechanical properties in wider temperature range, good mechanical property is arranged, and impact strength is 3～5 times of other films, and folding resistance is good.Long-term serviceability temperature can reach 120 ℃, and electrical insulating property is good, even under high-temperature high-frequency, its electrical property is still better, but corona resistance is relatively poor, creep resistance, and fatigue durability, rub resistance, dimensional stability are all fine.
In addition more preferably, basic unit 43 also comprises the second material layer 45 that carries the first material layer 44, and this second material layer 45 is the polyvinylidene fluoride material layer.Be PVDF, this PVDF material has the characteristic of fluororesin and resins for universal use concurrently, has good resistance to wear, pliability, very high anti-intensity and the resistance to impact intensity of rising.Except having good chemical resistance, heat-resisting quantity, oxidative resistance, weatherability, UV resistant and x radiation x performance, also have the properties such as piezoelectricity, dielectricity, pyroelectricity.Except the PVDF material layer; can also adopt polyvinyl alcohol layer; be PVA, this PVA material has unique powerful cementability, epithelium pliability, flatness, oil resistance, solvent resistance, protecting colloid, gas barrier performance, resistance to wear and the resistance to water that has through special processing.In addition, the compound fluoroplastic layer that can also adopt E.I.Du Pont Company to produce, be the other materials that other those skilled in the art such as TPT (Tedler-Polyeast-Tedler) film can expect, as long as can realize purpose of the present invention, the present invention does not limit this.
What deserves to be explained is that after tested, the photovoltaic module in the preferred embodiment for the present invention is compared the existing photovoltaic module that reflector layer is not set, generated output can improve 3%-4%, and this has positive effect to the photovoltaic generation industry.In addition, the cell panel packaging technology of the photovoltaic module that the preferred embodiment for the present invention provides, the manufacturing process such as moulding process of each material layer can be identical with the manufacturing process of photovoltaic module of the prior art, this can effectively control production cost and the production efficiency of this photovoltaic module, so that Practical Performance of the present invention accesses assurance.
To sum up, the photovoltaic module that the preferred embodiment for the present invention provides, not only generating efficiency is high but also overall structure is more stable, high life, and can effectively control cost and production efficiency.Therefore, photovoltaic module provided by the invention has higher practicality and promotional value.
Below describe by reference to the accompanying drawings preferred implementation of the present invention in detail; but; the present invention is not limited to the detail in the above-mentioned execution mode; in technical conceive scope of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove in addition, each concrete technical characterictic described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the present invention is to the no longer separately explanation of various possible compound modes.
In addition, also can carry out combination in any between the various execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. photovoltaic module, this photovoltaic module comprises the cell panel (1) for opto-electronic conversion and encapsulates glass plate (2) and the backboard (3) of this cell panel (1), described glass plate (2) is positioned at the top of described cell panel (1), described backboard (3) is positioned at the below of described cell panel (1), described backboard (3) comprise the described cell panel of carrying (2) center (31) and from this center (31) to around the marginal zone (32) of extending, it is characterized in that described backboard (3) comprises the reflector layer (41) that can cover described marginal zone (32).
2. photovoltaic module according to claim 1 is characterized in that, the reflecting rate of described reflector layer (41) is greater than 85%.
3. photovoltaic module according to claim 1 and 2, it is characterized in that, described backboard (3) comprises the transparent insulating layer (42) that contacts with described cell panel (1) and is positioned at the basic unit (43) of this transparent insulating layer (42) below that described reflector layer (3) is for being sprayed on aluminium powder layer or the aluminium alloy bisque in the described basic unit (3).
4. photovoltaic module according to claim 3 is characterized in that, described basic unit (43) is the elasticity polymer material layer.
5. photovoltaic module according to claim 4 is characterized in that, described basic unit (43) comprises first material layer (44) of the described reflector layer of carrying (41), and this first material layer (44) is the pet material layer.
6. photovoltaic module according to claim 5, it is characterized in that, described basic unit (43) comprises second material layer (45) of described the first material layer of carrying (44), and this second material layer (45) is polyvinylidene fluoride material layer or polyvinyl alcohol layer or compound fluoroplastic layer.
7. photovoltaic module according to claim 1, it is characterized in that, described photovoltaic module is included as the encapsulated layer (5) of ethylene vinyl acetate polymer material layer, this encapsulated layer (5) lays respectively between described glass plate (2) and the described cell panel (1), and between described backboard (3) and the described cell panel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100964915A CN103367493A (en) | 2012-04-01 | 2012-04-01 | Photovoltaic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100964915A CN103367493A (en) | 2012-04-01 | 2012-04-01 | Photovoltaic assembly |
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| CN103367493A true CN103367493A (en) | 2013-10-23 |
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| CN2012100964915A Pending CN103367493A (en) | 2012-04-01 | 2012-04-01 | Photovoltaic assembly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617871A (en) * | 2015-02-05 | 2015-05-13 | 浙江晶科能源有限公司 | Micro concentrating photovoltaic module |
| CN104979418A (en) * | 2015-06-22 | 2015-10-14 | 广东爱康太阳能科技有限公司 | Solar cell module with uniform heat conduction function |
Citations (8)
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|---|---|---|---|---|
| US5994641A (en) * | 1998-04-24 | 1999-11-30 | Ase Americas, Inc. | Solar module having reflector between cells |
| CN101369609A (en) * | 2008-10-10 | 2009-02-18 | 南开大学 | Solar battery with upper conversion material and preparation method |
| CN101924152A (en) * | 2010-03-02 | 2010-12-22 | 新奥光伏能源有限公司 | Thin-film solar cell and manufacture method thereof |
| CN201732801U (en) * | 2010-08-13 | 2011-02-02 | 英利能源（中国）有限公司 | Photovoltaic cell prepared by charge transfer method |
| JP2011165967A (en) * | 2010-02-10 | 2011-08-25 | Fujifilm Corp | Solar cell backsheet and solar cell module |
| CN102244128A (en) * | 2011-06-17 | 2011-11-16 | 常州天合光能有限公司 | High-power photovoltaic module structure |
| CN102306671A (en) * | 2011-09-30 | 2012-01-04 | 深圳华加日铝业有限公司 | Integrated solar thin film battery component, backboard and modification method thereof |
| CN102361043A (en) * | 2011-11-15 | 2012-02-22 | 阿特斯(中国)投资有限公司 | Ethylene vinyl acetate (EVA) for encapsulating solar cell |
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2012
- 2012-04-01 CN CN2012100964915A patent/CN103367493A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5994641A (en) * | 1998-04-24 | 1999-11-30 | Ase Americas, Inc. | Solar module having reflector between cells |
| CN101369609A (en) * | 2008-10-10 | 2009-02-18 | 南开大学 | Solar battery with upper conversion material and preparation method |
| JP2011165967A (en) * | 2010-02-10 | 2011-08-25 | Fujifilm Corp | Solar cell backsheet and solar cell module |
| CN101924152A (en) * | 2010-03-02 | 2010-12-22 | 新奥光伏能源有限公司 | Thin-film solar cell and manufacture method thereof |
| CN201732801U (en) * | 2010-08-13 | 2011-02-02 | 英利能源（中国）有限公司 | Photovoltaic cell prepared by charge transfer method |
| CN102244128A (en) * | 2011-06-17 | 2011-11-16 | 常州天合光能有限公司 | High-power photovoltaic module structure |
| CN102306671A (en) * | 2011-09-30 | 2012-01-04 | 深圳华加日铝业有限公司 | Integrated solar thin film battery component, backboard and modification method thereof |
| CN102361043A (en) * | 2011-11-15 | 2012-02-22 | 阿特斯(中国)投资有限公司 | Ethylene vinyl acetate (EVA) for encapsulating solar cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104617871A (en) * | 2015-02-05 | 2015-05-13 | 浙江晶科能源有限公司 | Micro concentrating photovoltaic module |
| CN104979418A (en) * | 2015-06-22 | 2015-10-14 | 广东爱康太阳能科技有限公司 | Solar cell module with uniform heat conduction function |
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Application publication date: 20131023 |