CN221080032U - Photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions - Google Patents
Photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions Download PDFInfo
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- CN221080032U CN221080032U CN202322767108.0U CN202322767108U CN221080032U CN 221080032 U CN221080032 U CN 221080032U CN 202322767108 U CN202322767108 U CN 202322767108U CN 221080032 U CN221080032 U CN 221080032U
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- photovoltaic module
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- 238000001816 cooling Methods 0.000 title claims abstract description 48
- 230000002209 hydrophobic effect Effects 0.000 title claims abstract description 20
- 230000005855 radiation Effects 0.000 claims abstract description 41
- 239000000017 hydrogel Substances 0.000 claims abstract description 20
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 238000002834 transmittance Methods 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 22
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 22
- 230000009977 dual effect Effects 0.000 claims description 8
- -1 polydimethylsiloxane Polymers 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 23
- 238000004140 cleaning Methods 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 5
- 238000001704 evaporation Methods 0.000 abstract description 5
- 230000008020 evaporation Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 244000137852 Petrea volubilis Species 0.000 description 7
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910021426 porous silicon Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 238000009210 therapy by ultrasound Methods 0.000 description 4
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000005357 flat glass Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Substances CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
Classifications
-
- 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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- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions, which comprises: a photovoltaic module body; the radiation refrigeration layer with light transmittance is arranged on the light-facing surface of the photovoltaic module body; the surface of the radiation refrigeration layer with light transmittance, which faces away from the photovoltaic module body, is provided with a microstructure; and the moisture absorption hydrogel is arranged on the backlight surface of the photovoltaic module body. According to the photovoltaic module, a certain degree of cooling effect is achieved through the radiation refrigerating layer with light transmittance on the surface, and meanwhile, the self-cleaning effect on dirt such as dust is better by utilizing the hydrophobicity of the microstructure on the surface of the radiation refrigerating layer; in addition, the moisture absorption hydrogel arranged on the back of the photovoltaic module is utilized to realize the effect of good cooling of the photovoltaic module under the action of moisture evaporation and cooling in the daytime.
Description
Technical Field
The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions.
Background
At present, the cooling method for the photovoltaic cell mainly comprises two modes of air cooling and water cooling. Although the air cooling is simple in structure and most economical, the cooling effect is not ideal, heat is released into the surrounding air, and if the heat cannot be timely diffused, the temperature of the surrounding environment is increased, so that the cooling effect is further affected; the water cooling effect is relatively good, meanwhile, hot water can be recycled, but the water cooling structure is complex, the cooling cost is high, the water consumption is large, and the photovoltaic cooling device is not suitable for large-scale photovoltaic cooling.
Passive radiation refrigeration technology for self-cooling by emitting thermal radiation to the very low temperature environment (about 3K) of outer space has received attention in recent years. The passive radiation refrigeration technology does not need energy consumption, and the object heat emits heat radiation to the outer space by penetrating the earth atmosphere layer in the infrared heat radiation mode of the atmospheric window wave band (8-13 mu m), thereby achieving the self cooling effect. Research shows that by reasonably improving the spectral characteristics of the surface of an object, even under the condition of direct sunlight in the daytime, the cooling effect lower than the ambient temperature can be realized. Therefore, the technology is probably of good significance in cooling the photovoltaic module, for example, patent publication number CN110660875A, namely, a method for cooling the photovoltaic module by using a transparent middle infrared radiation cellulose film is realized by using the technology. However, the method disclosed in the patent is to embed a middle infrared radiation cellulose film with radiation refrigeration effect between the glass and the photovoltaic cell, so that infrared spectrum radiation emitted by the cellulose film is influenced by spectrum selective absorption of the glass, and the cooling effect of the photovoltaic module is influenced; in addition, the surface of the glass does not have a hydrophobic self-cleaning function, and the deposited dust is difficult to remove by simply relying on rainwater after a long time, so that the radiation cooling effect is affected. Although the patent number CN202111383955.6 discloses a preparation method of a composite coating material with hydrophobic radiation refrigeration and a preparation method thereof, the transmittance of the film prepared by the method for the visible light wave band is not ideal, and if the film is applied to the surface of a photovoltaic module, the absorption of the photovoltaic module for the visible light can be influenced, so that the photoelectric conversion efficiency is reduced.
Accordingly, there is still a need in the art for further improvements and enhancements.
Disclosure of utility model
In view of the shortcomings of the prior art, the utility model aims to provide a photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions, which has good cooling effect and good self-cleaning effect on dirt such as dust.
To achieve the purpose, the utility model adopts the following technical scheme:
A photovoltaic module having dual passive auxiliary cooling and surface hydrophobic functions, comprising:
A photovoltaic module body;
The radiation refrigeration layer with light transmittance is arranged on the light-facing surface of the photovoltaic module body; the surface of the radiation refrigeration layer with light transmittance, which faces away from the photovoltaic module body, is provided with a microstructure;
and the moisture absorption hydrogel is arranged on the backlight surface of the photovoltaic module body.
The following is a preferred technical scheme of the present utility model, but not a limitation of the technical scheme provided by the present utility model, and the following preferred technical scheme can better achieve and achieve the objects and advantages of the present utility model.
As a preferable technical scheme, the photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions, wherein the radiation refrigerating layer with light transmittance has stronger infrared heat radiation capability in a spectrum band of 8-13 μm .
As a preferred technical scheme, the photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions, wherein the radiation refrigeration layer with light transmittance comprises a polydimethylsiloxane film.
The beneficial effects are that: compared with the prior art, the photovoltaic module provided by the utility model realizes a certain degree of cooling effect through the radiation refrigerating layer with light transmittance on the surface, and simultaneously has a better self-cleaning effect on dirt such as dust by utilizing the hydrophobicity of the microstructure on the surface of the radiation refrigerating layer; in addition, the moisture absorption hydrogel arranged on the back of the photovoltaic module is utilized to realize the effect of good cooling of the photovoltaic module under the action of moisture evaporation and cooling in the daytime.
Drawings
FIG. 1 is a schematic view of a photovoltaic module with dual passive auxiliary cooling and surface hydrophobic functions according to the present utility model;
FIG. 2 is an enlarged view of the microstructure of a hydrophobic polydimethylsiloxane film;
FIG. 3 is a schematic view of the internal structure of a block of hygroscopic hydrogel.
Detailed Description
The utility model provides a photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions, which is further described in detail below for the purpose, technical scheme and effect of the utility model to be clearer and clearer. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The experimental methods used in the following examples are all conventional methods unless otherwise specified; the reagents, materials, etc. used in the examples described below are commercially available unless otherwise specified.
As shown in fig. 1, fig. 1 is a schematic structural diagram of a photovoltaic module with dual passive auxiliary cooling and surface water-repellent functions, and the photovoltaic module with dual passive auxiliary cooling and surface water-repellent functions includes: the solar energy photovoltaic module comprises a common photovoltaic module 20, a radiation refrigeration layer 10 with light transmittance, a moisture absorption hydrogel 30, a frame 40 and a bottom stainless steel support net 50, wherein the radiation refrigeration layer 10 is adhered to the upper surface of the common photovoltaic module 20, the moisture absorption hydrogel 30 is clung to the back surface of the common photovoltaic module 20, and the frame 40 and the bottom stainless steel support net 50 are used for fixing the common photovoltaic module 20 and the moisture absorption hydrogel 30.
In the embodiment, a certain degree of cooling effect is realized through the radiation refrigerating layer with light transmittance on the surface, and meanwhile, the hydrophobicity of the microstructure on the surface of the radiation refrigerating layer is utilized, so that the radiation refrigerating layer has a better self-cleaning effect on dirt such as dust; in addition, the moisture absorption hydrogel arranged on the back of the photovoltaic module is utilized to realize the effect of good cooling of the photovoltaic module under the action of moisture evaporation and cooling in the daytime. The specific shape of the microstructure may be set as desired.
In this embodiment, the common photovoltaic module 20 is the same as the photovoltaic module body, and the common photovoltaic module is a photovoltaic module in a general sense, and the technical scheme provided by the utility model aims at improving the common photovoltaic module, and the improvement of the internal structure of the photovoltaic module is not involved in that a radiation refrigeration layer is arranged on the light-facing surface of the common photovoltaic module, and a moisture absorption hydrogel is arranged on the backlight surface of the common photovoltaic module. The specific structure of the photovoltaic module is not described here in detail. The specific structure and dimensions of the frame 40 and the stainless steel support net 50 may be set according to the shape of the photovoltaic module body, so long as the functional requirements are satisfied, and the specific structure is not limited herein.
In the present embodiment, the radiation refrigeration layer 10 having light transmittance refers to a film layer capable of cooling an object by radiating heat radiation to the outer space. I.e. a film layer with passive radiation refrigeration function. The film layer does not need energy consumption, object heat penetrates through the earth atmosphere layer in an infrared heat radiation mode of an atmospheric window wave band (8-13 mu m) to emit heat radiation to the outer space, so that the effect of self cooling is achieved, and meanwhile, the normal operation of the photovoltaic module is not affected due to light transmittance.
In this embodiment, the radiation refrigerating layer 10 having light transmittance may be a Polydimethylsiloxane (PDMS) layer, and the thickness of the PDMS thin film layer may be 300 μm.
As an example, the PDMS film layer may be prepared by the following preparation method:
1) The preparation method comprises the steps of (1) pouring a Polydimethylsiloxane (PDMS) main agent and a curing agent into a reagent bottle according to a mass ratio of 10:1, magnetically stirring for 1 hour at normal temperature, and repeatedly vacuumizing for a plurality of times until bubbles in liquid are completely removed;
2) Selecting 2500 mesh sand paper (mould with microstructure on surface), ultrasonic cleaning with absolute ethanol and deionized water for 1 min, drying at 60deg.C for 30 min, and flatly adhering and fixing the back of sand paper on plate glass;
3) Placing the plate glass stuck with 2500-mesh sand paper in the step 2) on a plane of a casting machine, adjusting the height of a scraper to be 500 mu m, setting the speed to be 3mm/s, uniformly pouring the PDMS reagent with bubbles removed in the step 1) on the surface of the sand paper, starting the machine, and uniformly moving the scraper above the sand paper at the set height so as to form a PDMS wet film with uniform thickness on the surface of the sand paper;
4) Transferring the PDMS wet film prepared in the step 3) into a sealing box together with substrate plate glass, sealing and preheating for 30 minutes at 40 ℃, then heating to 60 ℃ to dry and solidify for 3 hours, and separating the PDMS film from sand paper after drying is finished, so as to obtain the PDMS film with one smooth surface and the other surface having a surface microstructure; an enlarged view of the microstructure is shown in fig. 2, and the PDMS film 12 and microstructure 11.
5) N-hexane and 1H, 2H-perfluoro decyl trichlorosilane are mixed according to the volume ratio of 2000:1, mixing and uniformly stirring, and then loading into a sprayer;
6) Putting the PDMS film with the surface microstructure prepared in the step 4) into a plasma cleaning machine, carrying out plasma treatment on the surface with the microstructure for 5 minutes, taking out, then uniformly spraying the fluorinated reagent diluted in the step 5) on the surface of the PDMS film with the microstructure until the PDMS film swells, then putting into a sealing box for sealing and placing for 1 hour, taking out, and obtaining the hydrophobic PDMS film after all the fluorinated reagent solvent on the PDMS film volatilizes.
In this embodiment, the hygroscopic hydrogel 30, which is closely attached to the back surface of the conventional photovoltaic module 20, has an internal structure as shown in fig. 3, and is composed of a hygroscopic hydrogel 31 and an internal porous silicon carbide block 32, wherein the hygroscopic hydrogel 31 is wrapped around and filled into the internal porous structure of the porous silicon carbide block 32. The shape of the absorbent hydrogel 30 may be a block, a sheet, or other shapes. The specific shape and size can be optimally set according to the size and heat dissipation capacity of the photovoltaic module.
The following is a block-shaped example, and the specific preparation process of the hydroscopic gel block is as follows:
1) Putting the porous silicon carbide square block into a box, adding a certain amount of deionized water, ultrasonically cleaning for 5 minutes, taking out, and putting into a blast oven to be dried for 3 hours at 60 ℃ for standby;
2) Dividing acrylamide, calcium chloride powder and deionized water into 1:2:5, putting the materials together in a mould box, uniformly stirring, performing ultrasonic treatment for 1 minute, then purging with nitrogen for 10 minutes, and covering a cover for later use;
3) Dissolving a small amount of potassium persulfate initiator and N, N' -methylene bisacrylamide crosslinking agent by deionized water, adding the solution prepared in the step 2), and carrying out ultrasonic treatment for 1 minute; and then the porous silicon carbide block dried in the step 1) is also put into the solution, ultrasonic treatment is carried out for 1 minute, a small amount of tetramethyl ethylenediamine is evenly dripped into the solution after the ultrasonic treatment, and then the water-absorbing hydrogel block is obtained after standing for 5 hours.
In the embodiment, the hygroscopic hydrogel block can absorb heat generated by the photovoltaic module in daytime and take away the heat through self-evaporation of water so as to better realize the effect of cooling the photovoltaic module; at the same time, when the temperature is reduced at night, the water vapor can be spontaneously absorbed from the surrounding air to supplement the water lost by the daytime evaporation. In addition, at night, the temperature of the moisture absorption hydrogel block can be reduced by the radiation refrigeration effect of the hydrophobic PDMS film on the surface of the photovoltaic module, so that the moisture absorption hydrogel block is beneficial to absorbing water vapor at night.
In this embodiment, the photovoltaic module has dual passive auxiliary cooling and surface self-cleaning functions through the synergistic effect of the hydrophobic PDMS film and the hygroscopic hydrogel block.
It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (4)
1. A photovoltaic module having dual passive auxiliary cooling and surface hydrophobic functions, comprising:
A photovoltaic module body;
The radiation refrigeration layer with light transmittance is arranged on the light-facing surface of the photovoltaic module body; the surface of the radiation refrigeration layer, which faces away from the photovoltaic module body, is provided with a microstructure;
and the moisture absorption hydrogel is arranged on the backlight surface of the photovoltaic module body.
2. The photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions according to claim 1, wherein the radiation refrigerating layer with light transmittance has infrared heat radiation capability in a spectrum band of 8-13 μm .
3. The photovoltaic module with dual passive auxiliary cooling and surface hydrophobic functions of claim 1, wherein the radiation chilling layer with light transmittance comprises a polydimethylsiloxane film.
4. The photovoltaic module with dual passive auxiliary cooling and surface hydrophobic functions according to claim 1, wherein the thickness of the radiation refrigeration layer with light transmittance is 100-300 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322767108.0U CN221080032U (en) | 2023-10-13 | 2023-10-13 | Photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322767108.0U CN221080032U (en) | 2023-10-13 | 2023-10-13 | Photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221080032U true CN221080032U (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322767108.0U Active CN221080032U (en) | 2023-10-13 | 2023-10-13 | Photovoltaic module with double passive auxiliary cooling and surface hydrophobic functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221080032U (en) |
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2023
- 2023-10-13 CN CN202322767108.0U patent/CN221080032U/en active Active
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