CN111370516A - Photovoltaic module battery piece clearance membrane and photovoltaic module - Google Patents
Photovoltaic module battery piece clearance membrane and photovoltaic module Download PDFInfo
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- CN111370516A CN111370516A CN202010191032.XA CN202010191032A CN111370516A CN 111370516 A CN111370516 A CN 111370516A CN 202010191032 A CN202010191032 A CN 202010191032A CN 111370516 A CN111370516 A CN 111370516A
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- layer
- photovoltaic module
- gap film
- cell gap
- cell
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- 239000012528 membrane Substances 0.000 title claims description 5
- 239000003292 glue Substances 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000005022 packaging material Substances 0.000 claims abstract description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 30
- 239000012790 adhesive layer Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000011521 glass Substances 0.000 description 8
- 239000005357 flat glass Substances 0.000 description 7
- 239000008393 encapsulating agent Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Images
Classifications
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- 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
-
- 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
- H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
-
- 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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- 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 discloses a photovoltaic module cell piece gap film which is in a strip shape and is arranged between cell pieces, and the photovoltaic module cell piece gap film is formed by superposing a substrate layer, a glue layer and a reflecting layer. The invention also discloses a photovoltaic module which consists of a front plate, a front packaging material layer, a battery layer, a rear packaging material layer and a back plate, wherein the photovoltaic module battery piece gap film is arranged on the back plate, corresponds to the photovoltaic module battery piece gap and can completely cover the gap, and the photovoltaic module battery piece gap film continuously extends along the transverse or longitudinal battery piece gap of the photovoltaic module. The photovoltaic module cell gap film is simple in structure, simple in preparation process, low in manufacturing cost and strong in applicability; the photovoltaic module using the photovoltaic module cell gap film can effectively improve the output power of the photovoltaic module.
Description
Technical Field
The invention relates to the related technical field of photovoltaic modules, in particular to a photovoltaic module cell gap film and a photovoltaic module.
Background
In the field of new energy, solar energy is an energy type with the greatest development potential and the lowest developed proportion, and is the only energy capable of eliminating the dependence on fossil energy in resource-deficient areas in the future, and the development and utilization of solar energy become economic development strategies of countries in the world. In recent years, researchers have focused on the efficient conversion of solar energy to electrical energy based on the photovoltaic effect. At present, in order to fully utilize the effective use area of a photovoltaic module, people carry out detailed analysis and research on a non-cell area in the photovoltaic module, and find that light rays incident to a cell gap in the photovoltaic module are regularly reflected and reflected to the outside of the module or penetrate through the module to reach the ground. The gaps between the cells and between the cell strings substantially occupy the surface area of the photovoltaic cell assembly, and the gaps cannot participate in energy conversion, so that sunlight received by the part of the area is wasted, and the photoelectric conversion efficiency of the photovoltaic module is reduced.
In order to increase the power generation power of the photovoltaic module, a reflective film structure layer is directly or indirectly arranged on a welding strip on the surface of a cell in many photovoltaic modules, and light incident to the surface of the welding strip is reflected to the surfaces of other positions of the cell to be absorbed. However, the existing reflective film has a complex structure and high technical requirements; the reflecting layer is prepared by an evaporation aluminum plating process, so that the requirement of aging resistance of the assembly is difficult to meet; in addition, the aluminum layer has a low adhesion to the substrate and is prone to defects during production.
In summary, in order to reduce the influence of the non-cell area on the output power of the solar cell and reduce the optical loss of the photovoltaic module without increasing the electrical loss of the photovoltaic module, there is a need in the art to improve the existing photovoltaic module.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a cell gap film for a photovoltaic module, wherein the cell gap film is in a strip shape and is disposed between cells, and the cell gap film for a photovoltaic module is formed by stacking a substrate layer, a glue layer, and a reflective layer.
Another objective of the present invention is to provide a photovoltaic module, which comprises a front plate, a front encapsulant layer, a cell layer, a back encapsulant layer, and a back plate, wherein the cell gap film of the photovoltaic module is disposed on the back plate, and the position of the cell gap film corresponds to the cell gap of the photovoltaic module and can completely cover the cell gap, and the cell gap film of the photovoltaic module continuously extends along the lateral or longitudinal cell gap of the photovoltaic module.
In order to achieve the purpose, the invention provides a photovoltaic module cell piece gap film which comprises a substrate layer, a glue layer and a reflecting layer, wherein the glue layer is positioned at the top of the substrate layer, the reflecting layer is positioned at the top of the glue layer, the substrate layer is compounded with the reflecting layer through the glue layer, a gap film sheet is obtained after curing, and the strip-shaped photovoltaic module cell piece gap film is obtained after slitting and slitting processes.
Preferably, the substrate layer comprises a bonding layer and a base layer, the base layer is positioned on the top of the bonding layer, and the glue layer is positioned on the top of the base layer; and the substrate layer is compounded with the reflecting layer through the glue layer.
Preferably, the width of the photovoltaic module cell gap film is 1-50mm, and the thickness is 32-255 μm.
Preferably, the thickness of the glue layer is 2-15 μm.
Preferably, the thickness of the light reflecting layer is 10 to 50 μm.
Preferably, the reflective layer is a film material prepared from a fluorine-containing resin mixture or a coating prepared from a fluorine-containing slurry.
Preferably, the thickness of the bonding layer is 10-90 μm, and the thickness of the base layer is 10-100 μm.
The invention also provides a photovoltaic module, which adopts the photovoltaic module cell gap film and comprises a front plate, a front packaging material layer, a cell layer, a rear packaging material layer, the photovoltaic module cell gap film and a back plate from top to bottom, wherein the position of the photovoltaic module cell gap film corresponds to the gap of the cell in the cell layer and completely covers the gap.
Preferably, the photovoltaic module cell gap films are arranged on the back plate longitudinally and transversely corresponding to gaps among the cells according to the distribution mode of the cells in the cell layer, and are fixed on the back plate in a hot bonding mode.
Compared with the prior art, the photovoltaic module and the cell piece gap film thereof have the advantages that: the photovoltaic module cell gap film is simple in structure, simple in preparation process and low in manufacturing cost; the applicability of the strip-shaped photovoltaic module cell gap film and the photovoltaic module is high; the photovoltaic module using the photovoltaic module cell gap film effectively improves the output power of the photovoltaic module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a photovoltaic module cell gap film according to the present invention.
Fig. 2 is a schematic sectional view of a photovoltaic module according to the present invention.
Fig. 3 is a schematic view showing a photovoltaic module cell gap film thermally attached to a back sheet according to the present invention.
Detailed Description
As shown in fig. 1, the photovoltaic module cell gap film 20 of the present invention is a strip, and includes a substrate layer 21, a glue layer 22, and a reflective layer 23, wherein the glue layer 22 is located on top of the substrate layer 21, and the reflective layer 23 is located on top of the glue layer 22. The substrate layer 21 further comprises a bonding layer 211 and a base layer 212, the base layer 212 being located on top of the bonding layer 211, and the glue layer 22 being located on top of the base layer 212. The substrate layer 212 is compounded with the reflective layer 23 through the glue layer 22, and is cured to obtain a gap film sheet, and then the photovoltaic module cell gap film 20 is obtained through the processes of slitting and slitting. The width of the photovoltaic module cell piece gap film is 1-50mm, and the thickness of the photovoltaic module cell piece gap film is 32-255 mu m.
Specifically, the thickness of the bonding layer 211 is 10-90 μm, the thickness of the substrate layer 212 is 10-100 μm, the thickness of the glue layer 22 is 2-15 μm, and the thickness of the light reflecting layer 23 is 10-50 μm.
The reflective layer 23 is a film material prepared from a fluorine-containing resin mixture or a coating prepared from a fluorine-containing slurry. The photovoltaic module cell gap film 20 is simple in preparation process and low in production cost.
As shown in fig. 2, the photovoltaic module comprises a front plate 40, a front encapsulant layer 31, a cell layer 30, a back encapsulant layer 32, the photovoltaic module cell gap film 20, and a back sheet 10 from top to bottom. The position of the photovoltaic module cell gap film 20 corresponds to the gap of the cell in the cell layer 30 and can completely cover the gap.
As shown in fig. 3, the photovoltaic module cell gap films 20 are arranged on the back sheet 10 in the longitudinal and transverse directions corresponding to the gaps between the cells according to the distribution of the cells in the cell layer 30, and are fixed on the back sheet 10 by heat bonding. The photovoltaic module cell gap film 20 is overlapped at the crossing position of the transverse direction and the longitudinal direction of the cell gap.
The specific mode of the photovoltaic module cell gap film 20 applied to the single-glass photovoltaic module is specifically described as follows: taking a single-glass photovoltaic module containing 72 cells as an example (other specifications are also applicable), the back sheet 10 with a proper specification is taken firstly, different types of back sheets (such as coating type, co-extrusion type and the like) existing in the market can be selected as the back sheet 10, the contact surface with the back packaging material layer 32 is selected, and the photovoltaic module cell gap film 20 is heat-pasted on the back sheet 10 along the transverse direction and the longitudinal direction of the back sheet 10 respectively corresponding to the cell gap position in the cell layer 30. And then applying the back plate 10 pasted with the photovoltaic module cell gap film 20 to the preparation of a photovoltaic module to obtain the single-glass photovoltaic module with the gap films between the cells and between the strings of the corresponding module.
The specific mode of the photovoltaic module cell gap film 20 applied to the dual-glass photovoltaic module is specifically described as follows: firstly, selecting back plate glass with proper specification as a back plate 10, wherein the back plate glass can be common flat glass or common float tempered glass and other types of glass commonly used in the market, the back plate glass is selected to be in contact with the rear packaging material layer 32, corresponding to the cell gap position in the cell layer 30, the photovoltaic module cell gap film 20 is respectively and thermally pasted on the back plate glass along the transverse direction and the longitudinal direction of the back plate glass, and then the back plate glass pasted with the photovoltaic module cell gap film 20 is applied to the preparation of a photovoltaic module, so that the double-glass photovoltaic module with the gap films among the cells and between the strings of the corresponding module is obtained.
By arranging the photovoltaic module cell gap film 20 in the single-glass or double-glass photovoltaic module, the area of a non-cell in the photovoltaic module can be fully utilized, so that sunlight incident into the photovoltaic module can be fully utilized, and the output power of the photovoltaic module can be improved by 1-2%.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a photovoltaic module battery piece clearance membrane, its characterized in that, includes substrate layer, glue layer and reflector layer, the glue layer is located the substrate layer top, the reflector layer is located glue layer top, the substrate layer passes through glue layer with the reflector layer is compound, obtains clearance membrane sheet after the curing, obtains banding again after cutting and slitting process photovoltaic module battery piece clearance membrane.
2. The photovoltaic module cell gap film of claim 1, wherein the substrate layer comprises a tie layer and a base layer, the base layer being on top of the tie layer, the glue layer being on top of the base layer; and the substrate layer is compounded with the reflecting layer through the glue layer.
3. The photovoltaic module cell gap film according to claim 1, wherein the photovoltaic module cell gap film has a width of 1 to 50mm and a thickness of 32 to 255 μm.
4. The photovoltaic module cell gap film according to claim 1, wherein the thickness of the glue layer is 2 to 15 μm.
5. The photovoltaic module cell gap film according to claim 1, wherein the thickness of the light reflecting layer is 10 to 50 μm.
6. The photovoltaic module cell gap film according to claim 1, wherein the light reflecting layer is a film material prepared from a fluorine-containing resin mixture or a coating prepared from a fluorine-containing slurry.
7. The photovoltaic module cell gap film according to claim 2, wherein the adhesive layer has a thickness of 10 to 90 μm and the base layer has a thickness of 10 to 100 μm.
8. A photovoltaic module, which adopts the cell gap film of any one of claims 1 to 7, and comprises a front plate, a front packaging material layer, a cell layer, a rear packaging material layer, the cell gap film and a back plate from top to bottom, wherein the position of the cell gap film of the photovoltaic module corresponds to the position of the gap of the cell in the cell layer and all covers the gap.
9. The photovoltaic module according to claim 8, wherein the photovoltaic module cell gap films are arranged on the back sheet in a longitudinal and transverse direction corresponding to the gaps between the cells in the cell layer according to the distribution of the cells in the cell layer, and are heat-bonded and fixed on the back sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191032.XA CN111370516A (en) | 2020-03-18 | 2020-03-18 | Photovoltaic module battery piece clearance membrane and photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191032.XA CN111370516A (en) | 2020-03-18 | 2020-03-18 | Photovoltaic module battery piece clearance membrane and photovoltaic module |
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| Publication Number | Publication Date |
|---|---|
| CN111370516A true CN111370516A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010191032.XA Pending CN111370516A (en) | 2020-03-18 | 2020-03-18 | Photovoltaic module battery piece clearance membrane and photovoltaic module |
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| CN (1) | CN111370516A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136515A (en) * | 2010-12-31 | 2011-07-27 | 阿特斯(中国)投资有限公司 | Reflective stripe, solar assembly using same and preparation method of reflective stripe |
| CN207009457U (en) * | 2017-08-09 | 2018-02-13 | 苏州赛伍应用技术股份有限公司 | A kind of photovoltaic module high reflecting strips and photovoltaic module |
| CN107845697A (en) * | 2016-07-07 | 2018-03-27 | 3M创新有限公司 | Adhesive for light redirecting films |
| CN107863407A (en) * | 2017-12-14 | 2018-03-30 | 天合光能股份有限公司 | Double-sided double-glass photovoltaic assembly glass backboard and double-sided double-glass photovoltaic assembly |
| CN108010977A (en) * | 2017-12-01 | 2018-05-08 | 浙江晶科能源有限公司 | A kind of photovoltaic module |
| CN209515687U (en) * | 2018-12-28 | 2019-10-18 | 中天科技精密材料有限公司 | Photovoltaic module |
-
2020
- 2020-03-18 CN CN202010191032.XA patent/CN111370516A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136515A (en) * | 2010-12-31 | 2011-07-27 | 阿特斯(中国)投资有限公司 | Reflective stripe, solar assembly using same and preparation method of reflective stripe |
| CN107845697A (en) * | 2016-07-07 | 2018-03-27 | 3M创新有限公司 | Adhesive for light redirecting films |
| CN207009457U (en) * | 2017-08-09 | 2018-02-13 | 苏州赛伍应用技术股份有限公司 | A kind of photovoltaic module high reflecting strips and photovoltaic module |
| CN108010977A (en) * | 2017-12-01 | 2018-05-08 | 浙江晶科能源有限公司 | A kind of photovoltaic module |
| CN107863407A (en) * | 2017-12-14 | 2018-03-30 | 天合光能股份有限公司 | Double-sided double-glass photovoltaic assembly glass backboard and double-sided double-glass photovoltaic assembly |
| CN209515687U (en) * | 2018-12-28 | 2019-10-18 | 中天科技精密材料有限公司 | Photovoltaic module |
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Application publication date: 20200703 |
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