CN203071106U - Backplane and photovoltaic assembly - Google Patents
Backplane and photovoltaic assembly Download PDFInfo
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- CN203071106U CN203071106U CN2012206807650U CN201220680765U CN203071106U CN 203071106 U CN203071106 U CN 203071106U CN 2012206807650 U CN2012206807650 U CN 2012206807650U CN 201220680765 U CN201220680765 U CN 201220680765U CN 203071106 U CN203071106 U CN 203071106U
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- backboard
- photovoltaic module
- reflector
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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
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Abstract
The utility model provides a backplane. The backplane includes a backplane body and an heat insulating and cooling layer which cover at least one of the front surface and the back surface of the backplane body. Compared with the prior art, the backplane and the photovoltaic assembly provided by the utility model are advantageous in that the temperature of the photovoltaic assembly can be effectively decreased. Thus, the problem of the power drop caused by over high temperature of the assembly can be solved; the power of the photovoltaic assembly is improved; the temperature difference of the photovoltaic assembly is decreased; the rate of the aging of materials of the assembly caused by overlarge temperature difference is slowed; the service life of the photovoltaic assembly is prolonged; absorption and utilization rate of light of the photovoltaic assembly is increased; and the photoelectric conversion efficiency of the photovoltaic assembly is improved .
Description
Technical field
The utility model relates to the photovoltaic technology field, more particularly, relates to a kind of backboard and photovoltaic module.
Background technology
Solar cell is the semiconductor device that a kind of luminous energy with the sun is converted into electric energy.Because it is Green Product, can not cause environmental pollution, and what utilize is renewable resource, so under current energy starved situation, solar cell is a kind of novel energy that arranged wide development prospect.
Since solar cell itself easily broken, easily be corroded, if be directly exposed in the atmosphere, its electricity conversion can be through moisture, the influence of dust, acid rain etc. and descending, so that damage inefficacy.Therefore, solar cell generally all must be packaged into photovoltaic module and just can come into operation.
The structure of conventional photovoltaic module as Fig. 1, is followed successively by: glass cover-plate 103, upper strata EVA(ethylene-vinyl acetate copolymer from top to bottom) 102, solar battery sheet 101, the EVA104 of lower floor, backboard 105.
The power output of photovoltaic module and useful life are two important parameters weighing himself performance quality, still, find the power of conventional photovoltaic module and still remain useful life to be improved in the use of reality.
The utility model content
The utility model embodiment provides a kind of backboard and photovoltaic module, to improve power and the useful life of photovoltaic module.
For achieving the above object, the utility model provides following technical scheme:
A kind of backboard comprises: backboard body; Cover the heat insulation and heat control layer on the one side at least in the front and back of described backboard body.
Preferably, described heat insulation and heat control layer comprises, covers the reflector and the radiating layer that covers the described backboard body back side in described backboard body front.
Preferably, the material in described reflector is any one or a few in titanium oxide, zinc oxide or the tin-antimony oxide.
Preferably, the material of described radiating layer is the compound of metal oxide, metal carbides or metal oxide.
Preferably, the thickness in described reflector is 100 μ m～200 μ m, comprises endpoint value, and the thickness of described radiating layer is 100 μ m～200 μ m, comprises endpoint value.
Preferably, described reflector is transparent or is white that described radiating layer is transparent or is white.
The utility model also provides a kind of photovoltaic module, comprise: backboard, and be arranged at the solar battery sheet in described backboard front, wherein, described backboard comprises backboard body and covers heat insulation and heat control layer on the one side at least in the front and back of described backboard body.
Preferably, described heat insulation and heat control layer comprises, covers the reflector and the radiating layer that covers the described backboard body back side in described backboard body front.
Compared with prior art, technical scheme provided by the utility model has the following advantages at least:
Backboard provided by the utility model and photovoltaic module, by the one side at least in the front and back of the backboard of photovoltaic module the heat insulation and heat control layer is set, make the heat insulation and heat control layer that is arranged on the material formation backboard front, that the employing reflectivity is good become the reflector, this reflector can effectively make the light reflection on the backboard that shines between the solar battery sheet space, avoid photovoltaic module because self temperature that absorbs that light causes raises, increased photovoltaic module simultaneously to the absorption rate of light; And make the heat insulation and heat control layer that is arranged on the material formation backboard back side, that the employing radiativity is good become radiating layer, this radiating layer can make the heat that produces in the photovoltaic module course of work be radiated in the external environment with the form of ripple, reduces the temperature of photovoltaic module self.
Therefore, backboard provided by the utility model and photovoltaic module can effectively reduce the temperature of photovoltaic module self compared to existing technology, thereby avoided because the problem that the too high power that causes of assembly temperature descends, improved the power of photovoltaic module, and reduced the temperature difference of photovoltaic module self, slowed down because the aging speed of the assembly material that excessive temperature differentials causes, improved the useful life of photovoltaic module, increase the absorption rate of photovoltaic module to light simultaneously, improved its photoelectric conversion efficiency.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the basic block diagram of photovoltaic module in the prior art;
The structure chart of the backboard that Fig. 2 provides for the utility model embodiment;
The basic block diagram of the photovoltaic module that Fig. 3 provides for the utility model embodiment.
Embodiment
Just as stated in the Background Art, still remain in the power of photovoltaic module of the prior art and useful life to be improved, the inventor finds after deliberation, photovoltaic module is in the course of work of reality, and the internal resistance meeting that himself exists consumes a part of electric energy, and the temperature of photovoltaic module is raise, when work, be in higher temperature, because photovoltaic module generally is subjected to the influence of " negative temperature coefficient ", causes its temperature more high, it is more many that power descends; And when photovoltaic module did not generate electricity, especially when night, it is very many that self temperature can descend, thus photovoltaic module be in for a long time under the bigger high low temperature recurrent state of the temperature difference, thereby cause the aging speed of himself material very fast, influence its useful life.
Based on this, the utility model provides a kind of backboard and photovoltaic module, and this backboard comprises:
Backboard body;
Cover the heat insulation and heat control layer on the one side at least in the front and back of described backboard body.
Backboard provided by the utility model and photovoltaic module, by the one side at least in the front and back of the backboard of photovoltaic module the heat insulation and heat control layer is set, make the heat insulation and heat control layer that is arranged on the material formation backboard front, that the employing reflectivity is good become the reflector, this reflector can effectively make the light reflection on the backboard that shines between the solar battery sheet space, avoid photovoltaic module because self temperature that absorbs that light causes raises, increased photovoltaic module simultaneously to the absorption rate of light; And make the heat insulation and heat control layer that is arranged on the material formation backboard back side, that the employing radiativity is good become radiating layer, this radiating layer can make the heat that produces in the photovoltaic module course of work be radiated in the external environment with the form of ripple, reduces the temperature of photovoltaic module self.
Therefore, backboard provided by the utility model and photovoltaic module can effectively reduce the temperature of photovoltaic module self compared to existing technology, thereby avoided because the problem that the too high power that causes of assembly temperature descends, improved the power of photovoltaic module, and reduced the temperature difference of photovoltaic module self, slowed down because the aging speed of the assembly material that excessive temperature differentials causes, improved the useful life of photovoltaic module, increase the absorption rate of photovoltaic module to light simultaneously, improved its photoelectric conversion efficiency.
It more than is core concept of the present utility model, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
A lot of details have been set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, those skilled in the art can do similar popularization under the situation of the utility model intension, so the utility model is not subjected to the restriction of following public specific embodiment.
Secondly, the utility model is described in detail in conjunction with schematic diagram, when the utility model embodiment is described in detail in detail; for ease of explanation; the profile of expression device architecture can be disobeyed general ratio and be done local the amplification, and described schematic diagram is example, and it should not limit the scope of the utility model protection at this.The three dimensions size that in actual fabrication, should comprise in addition, length, width and the degree of depth.
The utility model embodiment provides a kind of backboard, the structure of this backboard as shown in Figure 2, this concrete backboard comprises: backboard body 200; Cover the heat insulation and heat control layer on the one side at least in the front and back of this backboard body 200.
In the present embodiment, described heat insulation and heat control layer comprises, covers the reflector 201 and the radiating layer 202 that covers backboard body 200 back sides in backboard body 200 fronts.
Need to prove that described " front of backboard body 200 " refers to backboard near the one side of solar battery sheet, described " back side of backboard body 200 " refers to that backboard is away from the one side of solar battery sheet.
In the present embodiment, the material in reflector 201 is one or more in titanium oxide, zinc oxide or the tin-antimony oxide preferably, and these materials are the good material of reflectivity, the light that shines on the reflector 201 can be reflected away; And the thickness in reflector 201 is 100 μ m～200 μ m preferably, comprise end points, more preferably 110 μ m～190 μ m; In addition, reflector 201 is transparent or is white in the present embodiment, with respect to other color, more can increase the reflection of light.
Need explanation to be, present embodiment is that example describes with the reflector of above-mentioned material, thickness and color only, but, present embodiment does not limit material, thickness and the color in this reflector 201, in other embodiment of the present utility model, can choose accordingly material, thickness and the color in reflector 201 according to the actual needs.
Above-mentioned reflector 201 is positioned at backboard near the one side of solar battery sheet, can change the path of the light in the slit that shines between the solar battery sheet, inside with this part light reflected light photovoltaic assembly, light is through repeatedly reflection and refraction in photovoltaic module inside, the final solar battery sheet surface that arrives, absorbed by solar battery sheet, in the present embodiment, the reflectivity in reflector 201 can reach 90～98%, reflectivity (70%～80%) than the common backboard that the reflector is not set has improved 10%～20%, therefore, the absorption of the non-solar battery sheet part of photovoltaic module to light radiation reduced in reflector 201 in the present embodiment, avoided owing to backboard absorbs the problem that photovoltaic module temperature that the slit glazing between the solar battery sheet causes raises that shines, increase the utilance of photovoltaic module to light, improved the power of photovoltaic module.
In the present embodiment, the material of radiating layer 202 is the compound of metal oxide, metal carbides or metal oxide preferably, as iron oxide, manganese oxide, nickel oxide, cupric oxide, cobalt oxide, chromium oxide, zirconia, antimony oxide, silica, aluminium oxide, magnesium oxide etc., these materials are the good material of radiativity, the form of heat with ripple can be radiated in the external environment; And the thickness of radiating layer 202 is 100 μ m～200 μ m preferably, comprise endpoint value, more preferably 110 μ m～190 μ m; In addition, radiating layer 202 is transparent or is white in the present embodiment, with respect to other color, more can increase the radiation to heat.
Need explanation to be, present embodiment is that example describes with the radiating layer of above-mentioned material, thickness and color only, but, present embodiment does not limit material, thickness and the color of this radiating layer 202, in other embodiment of the present utility model, can choose accordingly material, thickness and the color of radiating layer 202 according to the actual needs.
Above-mentioned radiating layer 202 is positioned at backboard away from the one side of solar battery sheet, be the outermost that radiating layer 202 is positioned at photovoltaic module, directly contact with external environment, therefore, the heat that photovoltaic module can be produced is radiated in the external environment with the form of ripple and goes, and has reduced the temperature of photovoltaic module itself.
By reflector 201 catoptrical effects, the effect of radiating layer 202 radiations heat energies, temperature when the backboard that present embodiment provides can effectively reduce photovoltaic module work, thus " negative temperature coefficient " influence to photovoltaic module power alleviated, make its power loss be unlikely to too big.
Need to prove, so-called " negative temperature coefficient " refers to that photovoltaic module in actual use, the internal resistance meeting that himself exists consumes a part of electric energy and produces heat simultaneously, the temperature of photovoltaic module is raise, cause the energy gap of solar battery sheet to narrow down, voltage descends, and photovoltaic module power reduces; General maximum power relative temperature coefficient σ be-0.45%/℃, namely the power for routine is the photovoltaic module of 250W, 1 ℃ of the every rising of himself temperature, maximum power reduction 1.125W; Photovoltaic module is when work, himself temperature is easy to reach 80 ℃～90 ℃, power for routine is the photovoltaic module of 250W, when its temperature is 80 ℃, the low approximately 62W of the maximum power that records under the maximum power ratio STC condition (solar cell standard test condition), 25% the power loss of namely having an appointment, as seen, under photovoltaic module temperature condition with higher, " negative temperature coefficient " is very big to the influence of the power of himself.
In addition, photovoltaic module is in the condition of high temperature when generating electricity by day, night, temperature dropped to reduced levels, then himself material is under the environment of high low temperature circulation for a long time, aging speed can be accelerated undoubtedly, and the higher working temperature of photovoltaic module also can make material aging speed up, the backboard that present embodiment provides is by reflector 201 catoptrical effects, the effect of radiating layer 202 radiations heat energies, temperature when photovoltaic module is generated electricity by day reduces, thereby reduced the temperature difference of photovoltaic module day and night, having alleviated battery sheet transformation efficiency descends, the backboard jaundice, degradation under the EVA light transmittance is because the problem of the material aging that the circulation of high low temperature and high temperature cause, reduce the aging speed of photovoltaic module material, thereby increased the useful life of photovoltaic module.
The manufacturing process of the backboard with reflector 201 and radiating layer 202 that present embodiment provides is: the coating that will contain the good material of reflectivity evenly is applied to the front of backboard body 200, form reflector 201, wherein the volumetric concentration of titanium oxide is when 30% left and right sides, reflecting effect is preferable, the coating that will contain the good material of radiativity evenly is applied to the back side of backboard, form radiating layer 202, wherein the addition of titanium oxide is that 5%～15% left and right sides radiation effect is better, after treating that formed reflector 201 and radiating layer 202 parch fully, namely finish the making of the backboard that present embodiment provides.
Need to prove, the backboard of backboard body 200 for adopting common process to complete that present embodiment adopts, generally be divided into three layers, mainly comprise pet layer (pet film) and the two-layer fluorine-containing layer that lays respectively at the pet layer upper and lower surface.
In addition, present embodiment only covers the reflector with the front, and the backboard that the back side covers radiating layer is that example describes, and in other embodiment of the present utility model, can also the reflector only be set in the front of backboard or only at the back side of backboard radiating layer be set.
At present for the needs of the aesthetic property that adapts to photovoltaic module or the use needs of practical matter, the photovoltaic module that a lot of manufacturers release is complete black assembly or transparent components, namely the backboard that uses be complete black backboard or transparent back panel, but the reflectivity of this photovoltaic module low (reflectivity as the black backboard can not surpass 5%), cause the temperature of photovoltaic module higher than the photovoltaic module temperature that adopts white backboard, the mode that back plate surface that present embodiment is provided at arranges the heat insulation and heat control layer is equally applicable to above-mentioned black backboard or transparent back panel, only need coat transparent heat insulation and heat control layer on the surface of black backboard or transparent back panel, just can be on the basis of realizing the photovoltaic module aesthetic property, reduce the temperature of himself, improve power and the useful life of complete black assembly or transparent components.
The backboard that the utility model embodiment provides, by the one side at least in the front and back of backboard the heat insulation and heat control layer is set, make the heat insulation and heat control layer that is arranged on the material formation backboard front, that the employing reflectivity is good become the reflector, this reflector can effectively reflect away the light on the backboard that shines between the solar battery sheet space, avoid photovoltaic module because self temperature that absorbs that light causes raises, increased photovoltaic module simultaneously to the absorption rate of light; And make the heat insulation and heat control layer that is arranged on the material formation backboard back side, that the employing radiativity is good become radiating layer, this radiating layer can make the heat that produces in the photovoltaic module course of work be radiated in the external environment with the form of ripple, reduces the temperature of photovoltaic module self.
Therefore, backboard provided by the utility model and photovoltaic module can effectively reduce the temperature of photovoltaic module self compared to existing technology, thereby avoided because the problem that the too high power that causes of assembly temperature descends, improved the power of photovoltaic module, and reduced the temperature difference of photovoltaic module self, slowed down because the aging speed of the assembly material that excessive temperature differentials causes, improved the useful life of photovoltaic module, increase the absorption rate of photovoltaic module to light simultaneously, improved its photoelectric conversion efficiency.
Corresponding with above-mentioned backboard, also provide a kind of photovoltaic module at the utility model embodiment, its structure as shown in Figure 3, be from top to bottom: glass cover-plate 304, upper strata EVA302, solar cell 301, the EVA303 of lower floor, and backboard, wherein said backboard comprises backboard body 305, covers the reflector 306 and the radiating layer 307 that covers backboard body 305 back sides in backboard body 305 fronts.
The material in reflector 306 is preferably one or more in titanium oxide, zinc oxide or the tin-antimony oxide, and these materials are the good material of reflectivity, the light that shines on the reflector 306 can be reflected away; And the thickness in reflector 306 is preferably 100 μ m～200 μ m, comprises endpoint value, more preferably 110 μ m～190 μ m; In addition, reflector 306 is transparent or is white, with respect to other color, more can increase the reflection of light.
Need to prove, reflector 306 is positioned at backboard near the one side of light, can be with the inside of the light reflected light photovoltaic assembly on the slit that shines between the solar battery sheet, this part light is absorbed by solar battery sheet, therefore, the non-solar battery sheet part of photovoltaic module can be reduced to the absorption of light radiation in reflector 306, avoided shining the photovoltaic module temperature rising that the slit glazed thread between the solar battery sheet causes owing to backboard absorbs, increase the utilance of photovoltaic module to light, improved the power of photovoltaic module.
The material of radiating layer 307 is preferably the compound of metal oxide, metal carbides or metal oxide, as iron oxide, manganese oxide, nickel oxide, cupric oxide, cobalt oxide, chromium oxide, zirconia, antimony oxide, silica, aluminium oxide, magnesium oxide etc., these materials are the good material of radiativity, the form of heat with ripple can be radiated in the external environment; And the thickness of radiating layer 307 is preferably 100 μ m～200 μ m, comprises endpoint value, more preferably 110 μ m～190 μ m; In addition, radiating layer 307 is transparent or is white, with respect to other color, more can increase the radiation to heat.
Need to prove that radiating layer 307 is positioned at backboard away from the one side of light, namely radiating layer 307 is positioned at the outermost of photovoltaic module, directly contact with external environment, therefore, the heat that photovoltaic module can be produced is radiated in the external environment with the form of ripple and goes, and has reduced the temperature of photovoltaic module itself.
The photovoltaic module that the utility model embodiment provides, by the one side at least in the front and back of backboard the heat insulation and heat control layer is set, make the heat insulation and heat control layer that is arranged on the material formation backboard front, that the employing reflectivity is good become the reflector, this reflector can effectively reflect away the light on the backboard that shines between the solar battery sheet space, avoid photovoltaic module because self temperature that absorbs that light causes raises, increased photovoltaic module simultaneously to the absorption rate of light; And make the heat insulation and heat control layer that is arranged on the material formation backboard back side, that the employing radiativity is good become radiating layer, this radiating layer can make the heat that produces in the photovoltaic module course of work be radiated in the external environment with the form of ripple, reduces the temperature of photovoltaic module self.
Therefore, photovoltaic module provided by the utility model can effectively reduce the temperature of photovoltaic module self compared to existing technology, thereby avoided because the problem that the too high power that causes of photovoltaic module temperature descends, improved the power of photovoltaic module, and reduced the temperature difference of photovoltaic module self, slowed down because the aging speed of the assembly material that excessive temperature differentials causes, improved the useful life of photovoltaic module, increase the absorption rate of photovoltaic module to light simultaneously, improved its photoelectric conversion efficiency.
Though the utility model discloses as above with preferred embodiment, yet is not in order to limit the utility model.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model according to any simple modification, equivalent variations and the modification that technical spirit of the present utility model is done above embodiment, all still belongs in the scope of technical solutions of the utility model protection.
Claims (8)
1. a backboard is characterized in that, comprising:
Backboard body;
Cover the heat insulation and heat control layer on the one side at least in the front and back of described backboard body.
2. backboard according to claim 1 is characterized in that, described heat insulation and heat control layer comprises, covers the reflector and the radiating layer that covers the described backboard body back side in described backboard body front.
3. backboard according to claim 2 is characterized in that, the material in described reflector is any one in titanium oxide, zinc oxide or the tin-antimony oxide.
4. backboard according to claim 2 is characterized in that, the material of described radiating layer is the compound of metal oxide, metal carbides or metal oxide.
5. backboard according to claim 2 is characterized in that, the thickness in described reflector is 100 μ m～200 μ m, comprises endpoint value, and the thickness of described radiating layer is 100 μ m～200 μ m, comprises endpoint value.
6. backboard according to claim 2 is characterized in that, described reflector is transparent or is white that described radiating layer is transparent or is white.
7. a photovoltaic module is characterized in that, comprising:
Backboard, and be arranged at the solar battery sheet in described backboard front, wherein, described backboard comprises backboard body and covers heat insulation and heat control layer on the one side at least in the front and back of described backboard body.
8. photovoltaic module according to claim 7 is characterized in that, described heat insulation and heat control layer comprises, covers the reflector and the radiating layer that covers the described backboard body back side in described backboard body front.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206807650U CN203071106U (en) | 2012-12-11 | 2012-12-11 | Backplane and photovoltaic assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206807650U CN203071106U (en) | 2012-12-11 | 2012-12-11 | Backplane and photovoltaic assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203071106U true CN203071106U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012206807650U Expired - Fee Related CN203071106U (en) | 2012-12-11 | 2012-12-11 | Backplane and photovoltaic assembly |
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| CN (1) | CN203071106U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340558A (en) * | 2016-08-27 | 2017-01-18 | 无锡中洁能源技术有限公司 | Self-temperature-reducing solar energy backboard |
| CN108565306A (en) * | 2018-05-04 | 2018-09-21 | 苏州宝澜环保科技有限公司 | A kind of novel solar battery component and preparation method thereof |
| CN109119504A (en) * | 2018-11-02 | 2019-01-01 | 南京朗伯尼特新能源有限公司 | Photovoltaic module and the method for preparing porous PVDF-HFP film at the photovoltaic module back side |
-
2012
- 2012-12-11 CN CN2012206807650U patent/CN203071106U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340558A (en) * | 2016-08-27 | 2017-01-18 | 无锡中洁能源技术有限公司 | Self-temperature-reducing solar energy backboard |
| CN108565306A (en) * | 2018-05-04 | 2018-09-21 | 苏州宝澜环保科技有限公司 | A kind of novel solar battery component and preparation method thereof |
| CN109119504A (en) * | 2018-11-02 | 2019-01-01 | 南京朗伯尼特新能源有限公司 | Photovoltaic module and the method for preparing porous PVDF-HFP film at the photovoltaic module back side |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20191211 |