CN103872162B - Low-working-temperature solar cell module - Google Patents
Low-working-temperature solar cell module Download PDFInfo
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- CN103872162B CN103872162B CN201410098437.3A CN201410098437A CN103872162B CN 103872162 B CN103872162 B CN 103872162B CN 201410098437 A CN201410098437 A CN 201410098437A CN 103872162 B CN103872162 B CN 103872162B
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- high heat
- heat conduction
- adhesive film
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- film layer
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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 solar cell module which is superior in heat dissipating performance, simple in structural design and easy to industrialize. The low-working-temperature solar cell module comprises a cell piece, a glass side EVA glue film layer located on the front face of the cell piece and a glass layer located on the glass side EVA glue film layer, and further comprises a high-heat-dissipating backboard located on the back face of the cell piece. The high-heat-dissipating backboard comprises a high-heat-conducting weather-proof layer and a heat dissipating coating, wherein the high-heat-conducting weather-proof layer is in contact with the back of the cell piece, and a backboard side high-heat-conducting EVA glue film layer is arranged between the cell piece and the high-heat-dissipating backboard. Solar cell module encapsulating materials are changed, the glass layer and the glass side EVA glue film layer which are shorter in heat conducting path are adopted, the EVA with high-heat-conducting coefficient and the backboard materials with high-heat-conducting and high-radiant performance are utilized, and therefore the problem that a solar cell module is not good in heat dissipating performance when actually used is solved, the working temperature of the solar cell module is effectively reduced, and the actual electricity generating performance of the solar cell module is improved.
Description
Technical field
The invention belongs to technical field of solar batteries, more particularly, to a kind of solar-electricity with relatively low operating temperature
Pond component.
Background technology
Solar energy is a kind of cleaning, efficiently and the never new forms of energy of exhaustion, is one of important regenerative resource.In the sun
In applying, photovoltaic generation as Application of Solar Energy one of important way, its noiselessness, it is non-maintaining, without the advantages of discharge just
It is gradually gained popularity.
Solar module as photovoltaic generation core component, its generate electricity when, due to cell piece itself absorption portion
Dividend outside line is converted into heat so that the actual generation power of solar module is affected very big by itself temperature.By
Decline with the rising of the operating temperature of component in the generated output of component, the peak power temperature system of conventional main flow crystal silicon component
Number usually -0.43%/DEG C, the solar module temperature of such as monolithic 240W often raises 1 DEG C, and power will decline about 1W.By drop
The operating temperature of low component contributes to lift system generated energy improving the generated output of component.If solar module
Operating temperature（Solar cell nominal operating temperature（Nominal Operating Cell Temperature, NOCT）Refer to
When solar module is in open-circuit condition, and under conditions of the W/㎡ of light intensity 800,20 DEG C of ambient temperature, 1 m of wind speed/s
The temperature for being reached.）3 DEG C are reduced, then sending out in making the component compared with the practical application of the general components of same nominal power
Electrical power improves about 2W, and this is possible to that the generated energy of solar module is substantially improved.Therefore solar module heat dispersion
Quality be one of the key factor of height for directly affecting photovoltaic system generating efficiency.
At present, conventional crystal silicon solar battery component is usually by parts such as glass, EVA, cell piece, backboard and aluminum frames
Composition.In order to reduce the operating temperature of solar module, also occur in that some improve the solaode of heat dispersion in the industry.
Such as the Chinese patent application of Application No. CN201020138833.1, a kind of battery is disclosed, by solar battery group
The backboard back side of part covers one layer and there is good heat conductivility and the heat-conducting glue with rough surface or heat conduction adhesive plaster to improve
The heat dispersion of solar module.But because it only increased one layer of thermal paste, heat dispersion on the basis of Normal back plate
It is unsatisfactory, need further raising.Another way is using photovoltaic and photothermal integral solar module, although Neng Gouyou
Effect reduces the operating temperature of solar module, but the product design is complicated, and cost is high, hardly results in answering for scale
With.
The content of the invention
Have that encapsulating material heat conductivity is low for existing solar module, thermally conductive pathways are long, and heat dispersion is poor, group
The higher problem of part operating temperature, the invention discloses a kind of heat dispersion is excellent, structure design is simple, it is easy to which industrialization is too
Positive battery component.
In order to achieve the above object, the present invention provides following technical scheme：
A kind of low operating temperature solar module, including cell piece, positioned at the positive glass side EVA adhesive film of cell piece
Layer, the glassy layer on glass side EVA adhesive film layer also includes being located at the high heat sinking back-plate at the cell piece back side, described high scattered
Hot backboard includes high heat conduction weathering layer and thermal dispersant coatings, the high heat conduction weathering layer and cell piece back contact, the cell piece
Include backboard side high heat conduction EVA adhesive film layer and high heat sinking back-plate between, the glassy layer thickness is less than 3mm, described glass side
The thickness of EVA adhesive film layer is less than 0.4mm, and the backboard side high heat conduction EVA adhesive film layer heat conductivity is more than 0.4 W/ (mK), high
Heat conduction weathering layer heat conductivity is more than 1 W/ (mK).
The glass side EVA adhesive film layer is using the EVA packaging adhesive films with transformation function on photon.
The glass side EVA adhesive film layer light transmittance is more than 90%, and heat conductivity is more than 0.4 W/ (mK).
The high heat conduction weathering layer and thermal dispersant coatings are combined by integral type technique, and high heat conduction weathering layer thickness is less than
0.3mm, the high heat conduction weathering layer is high heat conduction PET, and the thermal dispersant coatings thickness is less than 0.5mm, is CNT or nanometer
Level aluminium powder.
The material with infra red radiation function is added with the thermal dispersant coatings.
The material with infra red radiation function is spinelle.
The thickness of the backboard side high heat conduction EVA adhesive film layer is less than 0.4mm.
The thickness of the backboard side high heat conduction EVA adhesive film layer is 0.3mm.
The thickness of the glass is 2.5mm.
The glass side EVA adhesive film thickness degree is 0.3mm.
The low operating temperature solar module that the present invention is provided is adopted by changing solar module encapsulating material
The shorter glass of thermally conductive pathways and glass side EVA layer, the EVA with high thermal conductivity coefficient and with high heat conduction and high radiance
Back veneer material, solves the not good phenomenon of the actually used middle heat dispersion of solar module, effectively reduces its operating temperature,
Improve the actual power performance of solar module.
Description of the drawings
The low operating temperature solar module structural representation that Fig. 1 is provided for the present invention；
Fig. 2 is high heat sinking back-plate structural representation.
Reference numerals list：
1- glassy layers, 2- glass side EVA adhesive film layers, 3- cell pieces, 4- backboards side high heat conduction EVA adhesive film layer, the high radiatings of 5-
Backboard, 5-1- high heat conduction weathering layers, 5-2- thermal dispersant coatings.
Specific embodiment
The technical scheme that the present invention is provided is described in detail below with reference to specific embodiment, it should be understood that following concrete
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.
A kind of low operating temperature solar module as shown in Figure 1, using the shorter glass of thermally conductive pathways, EVA, tool
There are the EVA and the back veneer material with high heat conduction and high radiance of high thermal conductivity coefficient, be prepared into out with more excellent heat dispersion
Solar module.Specifically, this battery component includes cell piece 3, positioned at the front of cell piece 3（Top is as electricity with Fig. 1
Pond front）Glass side EVA adhesive film layer 2, the glassy layer 1 on glass side EVA adhesive film layer 2, also include be located at cell piece 3
The high heat sinking back-plate 5 at the back side, includes backboard side high heat conduction EVA adhesive film layer 4 between the cell piece 3 and high heat sinking back-plate 5, described
The thickness of glassy layer 1 is less than 3mm, and preferred thickness is 2.5mm, relatively thin while solar module mechanical performance is ensured
Thickness of glass reduces the sinking path of cell piece.The thickness of described glass side EVA adhesive film layer 2 is less than 0.4mm, preferred thick
Spend for 0.3mm, it is evident that due to the thickness of glass 1 and the thinner thickness of glass side EVA adhesive film layer 2, the positive heat conduction of cell piece 3
Path is shorter.The thickness of the backboard side high heat conduction EVA adhesive film layer 4 be less than 0.4mm, preferred thickness be 0.3mm, heat conductivity
Preferably greater than 0.4 W/ (mK), ensure that the excellent capacity of heat transmission.
The high heat sinking back-plate 5 include high heat conduction weathering layer 5-1 and thermal dispersant coatings 5-2, the high heat conduction weathering layer 5-1 with
Cell piece back contact.The high heat conduction weathering layer 5-1 and thermal dispersant coatings 5-2 are combined together using integral type technique, will be dissipated
Hot coating is prepared in backboard, can preferably ensure the outdoor long-term reliability of coating.Wherein, high heat conduction weathering layer thickness should
Less than 0.3mm, heat conductivity is more than 1 W/ (mK), and heat conductivility is outstanding.High heat conduction weathering layer can using high heat conduction PET or its
The good material of his heat conductivility.
The thermal dispersant coatings thickness is less than 0.5mm.Described thermal dispersant coatings have for CNT or nanoscale aluminium powder etc.
The material of higher pyroconductivity, further, can increase the material with infra red radiation function such as spinelle as compound
On the one hand infrared radiating body, the figure layer of above-mentioned material improves heat conductivity and area of dissipation, on the other hand can also play red
The effect of external radiation radiating.
Further, the EVA material that glass side EVA adhesive film layer 2 is adopted can also be using with transformation function on photon
EVA packaging adhesive films, the EVA adhesive film can absorb and easily produce heat and the infrared light that can not be absorbed by cell piece, and
The infrared light is converted into the visible ray that can be absorbed by cell piece, so as to lift solar module generating efficiency
The operating temperature of reduction simultaneously itself.
Generally, backboard side high heat conduction EVA adhesive film layer heat conductivity is more than glass side EVA adhesive film layer heat conductivity.
But when the EVA light transmittances of the high thermal conductivity that backboard side EVA adhesive film layer 4 is adopted are more than 90%, also can be by glass side EVA adhesive film layer 2
Directly replace with the EVA material of the high thermal conductivity.
, by test of many times, it is 2.5mm that each layer size adopts optimal data, the i.e. thickness of glassy layer 1 in battery component for we,
The thickness of glass side EVA adhesive film layer 2 is 0.3mm, and the thickness of backboard side high heat conduction EVA adhesive film layer 4 is 0.3mm, and high heat conduction is weather-proof
Layer 5-1 thickness is 0.25mm, and thermal dispersant coatings 5-2 thickness is 0.3mm, the low operating temperature solar module prepared with it is identical
The temperature and generated energy of the conventional solar cell component of nominal power is contrasted and is listed as follows：
Table 1
The more conventional solar module of low operating temperature battery that can be seen that present invention offer by upper table data is normal
Temperature is low about 3 DEG C during work, and the more conventional component of generated energy increases nearly 7%, hence it is evident that better than conventional solar cell component.
Technological means disclosed in the present invention program are not limited only to the technological means disclosed in above-mentioned embodiment, also include
The technical scheme being made up of above technical characteristic combination in any.It should be pointed out 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 (8)
1. a kind of low operating temperature solar module, including cell piece, positioned at the positive glass side EVA adhesive film of cell piece
Layer, the glassy layer on glass side EVA adhesive film layer, it is characterised in that：Also include being located at the high radiating back of the body at the cell piece back side
Plate, the high heat sinking back-plate includes high heat conduction weathering layer and thermal dispersant coatings, the high heat conduction weathering layer and cell piece back contact,
Include backboard side high heat conduction EVA adhesive film layer between the cell piece and high heat sinking back-plate, the glassy layer thickness is less than 3mm, institute
The thickness of the glass side EVA adhesive film layer stated is less than 0.4mm, and the backboard side high heat conduction EVA adhesive film layer heat conductivity is more than 0.4
W/ (mK), high heat conduction weathering layer heat conductivity is more than 1 W/ (mK), and the glass side EVA adhesive film layer is using with photon
The EVA packaging adhesive films of transformation function, the EVA adhesive film can be absorbed easily produce heat and can not be absorbed by cell piece
Infrared light, and the infrared light is converted into the visible ray that can be absorbed by cell piece, the high heat conduction weathering layer and dissipate
Hot coating is combined by integral type technique, and the thermal dispersant coatings are CNT or nanoscale aluminium powder, is added in thermal dispersant coatings
There is the material with infra red radiation function.
2. low operating temperature solar module according to claim 1, it is characterised in that：The glass side EVA glue
Film layer light transmittance is more than 90%, and heat conductivity is more than 0.4 W/ (mK).
3. low operating temperature solar module according to claim 1 and 2, it is characterised in that：The high heat conduction is resistance to
Wait thickness degree and be less than 0.3mm, the high heat conduction weathering layer is high heat conduction PET, and the thermal dispersant coatings thickness is less than 0.5mm.
4. low operating temperature solar module according to claim 1, it is characterised in that：It is described with infra-red radiation
The material of function is spinelle.
5. low operating temperature solar module according to claim 1 and 2, it is characterised in that：The backboard side is high
The thickness of heat conduction EVA adhesive film layer is less than 0.4mm.
6. low operating temperature solar module according to claim 5, it is characterised in that：Backboard side high heat conduction
The thickness of EVA adhesive film layer is 0.3mm.
7. low operating temperature solar module according to claim 1 and 2, it is characterised in that：The thickness of the glass
Spend for 2.5mm.
8. low operating temperature solar module according to claim 1 and 2, it is characterised in that：Glass side EVA
Adhesive film thickness is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098437.3A CN103872162B (en) | 2014-03-18 | 2014-03-18 | Low-working-temperature solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098437.3A CN103872162B (en) | 2014-03-18 | 2014-03-18 | Low-working-temperature solar cell module |
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| CN103872162A CN103872162A (en) | 2014-06-18 |
| CN103872162B true CN103872162B (en) | 2017-04-12 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104980104A (en) * | 2015-06-22 | 2015-10-14 | 广东爱康太阳能科技有限公司 | Solar cell module |
| CN105023963A (en) * | 2015-07-28 | 2015-11-04 | 宁波贝达新能源科技股份有限公司 | Silicon solar module |
| CN105140323A (en) * | 2015-07-28 | 2015-12-09 | 宁波贝达新能源科技股份有限公司 | Efficient silicon solar module |
| CN106409924A (en) * | 2016-11-28 | 2017-02-15 | 宁波市柯玛士太阳能科技有限公司 | Solar photovoltaic panel |
| CN113257925A (en) * | 2021-04-12 | 2021-08-13 | 杭州电子科技大学 | Silicon solar cell utilizing infrared anti-reflection heat dissipation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250404A (en) * | 2010-05-18 | 2011-11-23 | 财团法人工业技术研究院 | Packaging material |
| CN102516852A (en) * | 2011-12-16 | 2012-06-27 | 新高电子材料（中山）有限公司 | Weather-resistant and high thermal conductive coating, radiating solar rear panel and efficient solar cell panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664208B (en) * | 2012-05-09 | 2014-12-10 | 华东理工大学 | Synergistic heat radiation solar cell assembly and preparation method thereof |
| CN103441171B (en) * | 2013-09-10 | 2016-05-11 | 乐凯胶片股份有限公司 | A kind of solar cell backboard of heat dispersion excellence |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102250404A (en) * | 2010-05-18 | 2011-11-23 | 财团法人工业技术研究院 | Packaging material |
| CN102516852A (en) * | 2011-12-16 | 2012-06-27 | 新高电子材料（中山）有限公司 | Weather-resistant and high thermal conductive coating, radiating solar rear panel and efficient solar cell panel |
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