CN111403520A - Light-transmitting packaging material for increasing light utilization rate and application thereof - Google Patents
Light-transmitting packaging material for increasing light utilization rate and application thereof Download PDFInfo
- Publication number
- CN111403520A CN111403520A CN202010246728.8A CN202010246728A CN111403520A CN 111403520 A CN111403520 A CN 111403520A CN 202010246728 A CN202010246728 A CN 202010246728A CN 111403520 A CN111403520 A CN 111403520A
- Authority
- CN
- China
- Prior art keywords
- adhesive film
- light
- film layer
- transmitting
- fog
- 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.)
- Pending
Links
- 239000005022 packaging material Substances 0.000 title claims abstract description 35
- 230000001965 increasing effect Effects 0.000 title claims abstract description 10
- 239000002313 adhesive film Substances 0.000 claims abstract description 65
- 238000004806 packaging method and process Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 239000008393 encapsulating agent Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000003490 calendering Methods 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920000554 ionomer Polymers 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 239000003566 sealing material Substances 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000012945 sealing adhesive Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000052 comparative effect Effects 0.000 description 12
- 239000012634 fragment Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 101001073212 Arabidopsis thaliana Peroxidase 33 Proteins 0.000 description 1
- 101001123325 Homo sapiens Peroxisome proliferator-activated receptor gamma coactivator 1-beta Proteins 0.000 description 1
- 102100028961 Peroxisome proliferator-activated receptor gamma coactivator 1-beta Human genes 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000005329 float glass Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention belongs to the technical field of packaging materials, and particularly relates to a light-transmitting packaging material for increasing light utilization rate and application thereof. The light-transmitting packaging material comprises at least two adhesive film layers, wherein one adhesive film layer is a transparent packaging adhesive film layer, the other adhesive film layer is a fog-shaped packaging adhesive film layer, the fog-shaped packaging adhesive film layer is in a discontinuous strip shape, the fog-shaped packaging adhesive film layer is equal to or higher than the transparent packaging adhesive film layer, and the height difference is smaller than 0.1 mm. The invention also comprises the application of the light-transmitting packaging material in a photovoltaic module. Has the advantages that: the light-transmitting packaging material has high light utilization rate and wide format application range, so that the production yield of the photovoltaic module is high, and the productivity is favorably improved.
Description
Technical Field
The invention belongs to the technical field of packaging materials, and particularly relates to a light-transmitting packaging material for increasing light utilization rate and application thereof.
Background
With the development of advanced component technologies represented by double-sided power generation components, stack tile components, half-cell components, multi-main-grid components and the like, the utilization rate of sunlight on the cell pieces is higher and higher, and thus, many manufacturers put the attention in the blank areas among the cell pieces. At present, the conventional method for increasing the sunlight utilization rate between the cell strings and the cell sheets is to increase a reflection structure to reflect the light irradiated to the cell sheets, but in the reflection and sunlight transmission processes, the adhesive film and the glass can cause secondary loss of the sunlight. In addition, a reflecting structure is added between the battery pieces, so that appearance problems such as bubbles, deviation and fragments are easy to occur in the laminating process, the production efficiency of the photovoltaic module is low, and the corresponding raw material cost and labor cost are increased.
In the prior art, some companies adopt a packaging adhesive film material prepared by compounding a latticed high-reflection layer and a transparent adhesive film, and effectively reflect out leaked sunlight through the high-reflection layer in a non-battery area so as to achieve the purpose of enhancing the solar utilization rate; however, the preparation method of the latticed high-reflection packaging adhesive film is complex, the general range of the product is small, the plate type needs to be customized, the method is not suitable for large-scale mass production, the directions of the reflected light of the high-reflection material are consistent, the reflection area is relatively small, the reflected light can only fall into a small area of the battery piece to be utilized, and the light utilization rate needs to be further improved.
In view of this, the invention is particularly proposed.
Disclosure of Invention
In order to overcome the defects of small application range of packaging adhesive films, low light utilization rate and low assembly production efficiency in the prior art, the invention provides a light-transmitting packaging material for increasing the light utilization rate and application thereof, so as to meet the requirement of improving the utilization rate of the light in the gaps of the battery plates by all assemblies.
The invention is realized by the following technical scheme:
a light-transmitting packaging material for increasing light utilization rate comprises at least two adhesive film layers, wherein one adhesive film layer is a transparent packaging adhesive film layer, the other adhesive film layer is a fog-shaped packaging adhesive film layer, and the fog-shaped packaging adhesive film layer is in a discontinuous strip shape.
Preferably, the haze of the fog-shaped packaging adhesive film layer is more than or equal to 5%.
Preferably, the fog-shaped packaging adhesive film layer is equal to or higher than the transparent packaging adhesive film layer, the height difference is smaller than 0.1mm, the height difference cannot be too large, and if the height difference is too large, the risk of fragments of the battery piece is easy to occur.
Further, the base materials of the transparent packaging adhesive film layer and the fog-shaped packaging adhesive film layer are both electric insulating resin, and the electric insulating resin meets the requirement that the volume resistivity of the film is more than 10 after the film is formed15Omega cm, a heat melting point of 40-180 ℃.
The electrically insulating resin is at least one of polyolefin, ethylene-vinyl acetate copolymer, polyvinyl butyral, ionomer, polyurethane, silicone, epoxy resin, ethylene propylene diene monomer, and the like.
Preferably, the total thickness of the light-transmitting packaging material is 150-1000 μm.
Preferably, the light-transmitting packaging material is prepared by adopting a casting method or a calendering method in one step.
The invention also provides an application of the light-transmitting packaging material in a photovoltaic module, wherein the fog-like packaging adhesive film layer is arranged in a gap area of a battery string, and the transparent packaging adhesive film layer is arranged in an area of the battery string.
It should be noted that the light-transmitting packaging material of the present invention is not limited to the use in the photovoltaic industry, and other industries are protected by the present invention for reference.
The invention has the beneficial effects that:
(1) the fog-shaped packaging adhesive film layer in the light-transmitting packaging material can reflect sunlight in gaps among the cell strings in all directions by utilizing the scattering effect, and further more reflected sunlight falls onto the cell pieces.
(2) The fog-shaped packaging adhesive film layer on the surface of the light-transmitting packaging material is strip-shaped, and compared with a grid-shaped high-reflection layer in the prior art, the preparation method of the strip-shaped fog-shaped packaging adhesive film layer is easier to operate and prepare and can be obtained by adopting a common tape casting method or a calendering method to carry out one-step molding; the melting finger of the fog-shaped packaging adhesive film layer is lower than that of the transparent adhesive film layer, so that the problem of displacement and sheet combination of the battery sheets in the laminating process can be prevented, the production yield of the assembly is improved, and the productivity is improved.
(3) The areas of the strip-shaped fog-shaped packaging adhesive film layer of the light-transmitting packaging material are distributed among the battery strings formed by welding the battery pieces and the edge areas, and the design is suitable for most of module types, for example, the design can be suitable for conventional, semi-piece and lamination in the prior art, corresponding design change is needed only when the number of the battery strings is changed, and the change of the strip-shaped quantity of the fog-shaped packaging adhesive film layer is simpler and easier to operate.
Drawings
FIG. 1 is a top view of a light-transmissive encapsulant of the present invention;
FIG. 2 is a cross-sectional view of the light transmissive encapsulant of FIG. 1;
in the figure: 1-transparent packaging adhesive film layer; 2-fog type packaging adhesive film layer.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, but is not limited thereto.
Example 1
Referring to fig. 1-2, a light-transmitting encapsulating material for increasing light utilization rate includes a transparent encapsulating adhesive film layer 1 and a fog-like encapsulating adhesive film layer 2, wherein the fog-like encapsulating adhesive film layer 2 is in a discontinuous strip shape.
The base materials of the transparent packaging adhesive film layer 1 and the fog-shaped packaging adhesive film layer 2 are polyolefin, and the volume resistivity after film forming is 5 × 1015Omega cm, the thermal melting point is 105 ℃; the haze of the fog-shaped packaging adhesive film layer 2 is 5%.
Preferably, the thickness of the transparent encapsulating adhesive film layer 1 is 500 μm, the fog-shaped encapsulating adhesive film layer 2 is higher than the transparent encapsulating adhesive film layer 1, the height difference is 50 μm (that is, the thickness of the fog-shaped region is 550 μm), the height difference cannot be too large, and if the height difference is too large, the risk of the cell fragments is easy to occur.
The light-transmitting packaging material can be prepared in one step by adopting a tape casting method.
Example 2
The light-transmitting packaging material of the present embodiment is substantially the same as that of embodiment 1, except that: the thickness of the transparent packaging adhesive film layer 1 is 1000 μm, the fog-shaped packaging adhesive film layer 2 is higher than the transparent packaging adhesive film layer 1, and the height difference is 10 μm (namely, the thickness of the fog-shaped area is 1010 μm).
Comparative example 1
The packaging material of the comparative example is a transparent packaging material with the thickness of 500 μm, and the base material of the transparent packaging adhesive film is the same as the base material of the transparent packaging adhesive film 1 of the embodiment 1.
Comparative example 2
The packaging material of the comparative example is a transparent packaging material with the thickness of 1000 μm, and the base material of the transparent packaging adhesive film is the same as that of the transparent packaging adhesive film 1 of the embodiment 2.
Example 3
The light-transmitting packaging materials of the embodiments 1-2 and the packaging materials of the comparative examples 1-2 are respectively used for manufacturing a 60-cell photovoltaic module, and other materials are kept consistent: the front glass adopts ultra-white embossed glass, the back glass adopts common transparent float glass, the cell slice adopts a single crystal PERC cell slice of 5.5W, then the power of the assembled photovoltaic module is measured, and the data are shown in Table 1:
TABLE 1
As can be seen from the data in table 1, the power of the photovoltaic module laminated with the light-transmitting encapsulant in the example of the present invention is higher than that of the module laminated with the common transparent encapsulant in the comparative example, by 0.76% on average.
Comparative example 3
The height difference between the fog-like packaging adhesive film layer 2 of the embodiment 1 and the transparent packaging adhesive film layer 1 is set to be 0.2mm, and the rest is the same as the embodiment 1.
The light-transmitting encapsulating materials of the example 1 and the comparative example 3 were subjected to the photovoltaic module assembly method of the example 3, yield of the photovoltaic module was 99.5% and 89.8%, respectively, and the light-transmitting encapsulating material of the comparative example 3 had a low production yield of the photovoltaic module due to bubbles and fragments.
Comparative example 4
The fog-like encapsulation adhesive film layer 2 in the embodiment 1 is replaced by a high-reflection encapsulation adhesive film layer in the prior art, and the rest is the same as the embodiment 1.
According to the assembly method of the photovoltaic module of the embodiment 2, the yield of the photovoltaic module is 99.5% and 89.5% respectively by using the light-transmitting packaging materials of the embodiment 1 and the comparative example 4, and the production yield of the photovoltaic module is low due to the problems of glue turnover, glue mixing and the like of the high-reflection layer between the cells of the light-transmitting packaging material of the comparative example 4.
The light-transmitting packaging material is not limited to the use in the photovoltaic industry, and other industries are protected by the light-transmitting packaging material by taking the idea of the invention as reference.
The above-mentioned embodiments and the accompanying drawings are further described in detail for the purpose of illustrating the invention, and it is to be understood that the above-mentioned embodiments are only illustrative of the present invention and are not to be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention are included in the scope of the present invention.
Claims (8)
1. The light-transmitting packaging material for increasing the light utilization rate is characterized by comprising at least two adhesive film layers, wherein one adhesive film layer is a transparent packaging adhesive film layer (1), the other adhesive film layer is a fog-shaped packaging adhesive film layer (2), and the fog-shaped packaging adhesive film layer (2) is in a discontinuous strip shape.
2. A light-transmitting sealing material as claimed in claim 1, wherein the haze of the fog-like sealing adhesive film layer (2) is not less than 5%.
3. A light-transmitting packaging material as claimed in claim 1, wherein the fog-like packaging adhesive film layer (2) is disposed at a height equal to or higher than the transparent packaging adhesive film layer (1), and the height difference is less than 0.1 mm.
4. A light-transmitting packaging material as claimed in claim 1, wherein the base materials of the transparent packaging adhesive film layer (1) and the fog-like packaging adhesive film layer (2) are electrically insulating resins, and the volume resistivity of the electrically insulating resins after film formation is more than 1015Omega cm, a heat melting point of 40-180 ℃.
5. The light-transmitting sealing material according to claim 4, wherein the electrically insulating resin is at least one of polyolefin, ethylene-vinyl acetate copolymer, polyvinyl butyral, ionomer, polyurethane, silicone, epoxy resin, ethylene propylene diene monomer, and the like.
6. A light transmissive encapsulant as claimed in claim 1, wherein the total thickness of the light transmissive encapsulant is 150-1000 μm.
7. A light-transmitting packaging material as claimed in any one of claims 1 to 6, wherein the light-transmitting packaging material is prepared by a casting method or a calendering method in one step.
8. Use of the light-transmissive encapsulant of any of claims 1-7 in a photovoltaic module, wherein the fog-like encapsulant layer (2) is assembled in the gap region between the cell strings, and the transparent encapsulant layer (1) is assembled in the region of the cell strings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010246728.8A CN111403520A (en) | 2020-03-31 | 2020-03-31 | Light-transmitting packaging material for increasing light utilization rate and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010246728.8A CN111403520A (en) | 2020-03-31 | 2020-03-31 | Light-transmitting packaging material for increasing light utilization rate and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111403520A true CN111403520A (en) | 2020-07-10 |
Family
ID=71433038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010246728.8A Pending CN111403520A (en) | 2020-03-31 | 2020-03-31 | Light-transmitting packaging material for increasing light utilization rate and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111403520A (en) |
-
2020
- 2020-03-31 CN CN202010246728.8A patent/CN111403520A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2010287688A (en) | Solar cell module | |
| TWI445194B (en) | Package structure of solar photovoltaic module and method of manufacturing the same | |
| CN104868001A (en) | Novel two-sided photovoltaic solar cell module | |
| CN104134717A (en) | Method for manufacturing solar cell modules | |
| CN101872795A (en) | Solar module encapsulation structure | |
| CN212257414U (en) | Light-transmitting packaging material for increasing light utilization rate | |
| CN111403520A (en) | Light-transmitting packaging material for increasing light utilization rate and application thereof | |
| JP2012089577A (en) | Solar cell module | |
| CN211670198U (en) | Packaging adhesive film with grid structure | |
| CN212967722U (en) | Photovoltaic module is with encapsulation glued membrane and have its photovoltaic module | |
| CN210897309U (en) | Photovoltaic module | |
| JP5598986B2 (en) | Solar cell module | |
| CN108735847A (en) | Composite packaging adhesive film of photovoltaic module and photovoltaic module | |
| JP5729086B2 (en) | Solar cell module | |
| CN111490121A (en) | Local diffuse reflection packaging material and application thereof | |
| CN211828790U (en) | Packaging adhesive film and photovoltaic module | |
| CN209912879U (en) | Solar cell module and hollow solar glass | |
| CN208422940U (en) | Composite packaging adhesive film of photovoltaic module and photovoltaic module | |
| CN201233894Y (en) | Glass board for solar energy cell assembly encapsulation | |
| CN111106197A (en) | Packaging adhesive film manufacturing method and photovoltaic module | |
| CN220963365U (en) | Solar cell packaging structure and photovoltaic module | |
| CN217323929U (en) | Packaging adhesive film | |
| CN217691190U (en) | Laminated piece | |
| CN221861676U (en) | Solar cell module | |
| CN218568847U (en) | Photovoltaic module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |