KR101370677B1 - The radiation of heat sheet and solar cell module has this - Google Patents

The radiation of heat sheet and solar cell module has this Download PDF

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Publication number
KR101370677B1
KR101370677B1 KR1020120044113A KR20120044113A KR101370677B1 KR 101370677 B1 KR101370677 B1 KR 101370677B1 KR 1020120044113 A KR1020120044113 A KR 1020120044113A KR 20120044113 A KR20120044113 A KR 20120044113A KR 101370677 B1 KR101370677 B1 KR 101370677B1
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South Korea
Prior art keywords
heat dissipation
solar cell
cell module
attached
layer
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KR1020120044113A
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Korean (ko)
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KR20130120891A (en
Inventor
윤정택
길종석
오해성
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주식회사 탑선
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

The present invention relates to a solar cell module having a heat dissipation sheet having improved heat dissipation and insulation performance, and is formed to surround the outer circumferential surface of the solar cell in order to fix the solar cell and the solar cell and protect the surface of the solar cell. A heat dissipation sheet including a protection part, a bottom part attached to the lower part of the protection part and having a plurality of heat dissipation holes penetrating up and down, and a heat dissipation part attached to the bottom part of the base part and dissipating heat transferred from the solar cell module to the outside to the outside. It is characterized by including.
According to the heat dissipation sheet having improved heat dissipation and insulation performance according to the present invention, heat generated from the solar cell module is quickly transferred to and released from the heat dissipation hole through the heat dissipation hole, thereby rapidly cooling the solar cell module and thereby Not only does it improve power generation efficiency, it also has the effect of maintaining durability for a long time.

Description

Heat radiation sheet with improved heat dissipation and insulation performance and solar cell module having same

The present invention relates to a heat dissipation sheet and a heat dissipation sheet having improved heat dissipation and insulation performance, and more particularly, to quickly dissipate heat generated from a solar cell module, and to have heat dissipation and insulation with electrical insulation. It relates to an improved heat dissipation sheet and a solar cell module having the same.

Recently, as the awareness of environmental problems such as global warming has risen, solar power generation as a clean energy source has been attracting attention, and solar cells having various forms have been developed. The solar cell is generally composed of a plurality of solar cell modules in which a plurality of solar cell cells wired in series or in parallel are packaged.

As a specific structure of a general solar cell module, the first protective layer made of a transparent base made of glass or the like, a thermoplastic resin such as ethylene vinyl acetate (EVA), a plurality of solar cells serving as a photovoltaic device, and the same as the first protective layer The second protective layer and the solar cell module back sheet are laminated and integrally formed through lamination processing. Each solar cell is wired in series or in parallel, and the terminal of the wire is connected to an external terminal via a junction box provided on the lower surface side.

In the case where the solar cell module having such a configuration is installed outdoors, even when the outside air temperature is 20 ° C. during the power generation, the temperature of the solar cell module generates heat of at least 40 ° C. due to heat generated by the operation of the solar cell. . As such, when the temperature of the solar cell module is increased, a problem occurs in that power generation efficiency is lowered due to the temperature characteristics of the solar cell. If the temperature of the solar cell continues to rise as described above, there is a problem that the solar cell is destroyed and a predetermined power output cannot be obtained from the solar cell module.

The present invention is to solve the above problems, it is possible to quickly release the heat generated from the solar cell module according to the heat dissipation sheet with improved heat dissipation and insulation performance that can improve the generation efficiency and durability of the solar cell module And it is an object to provide a solar cell module having the same.

The heat dissipation sheet having improved heat dissipation and insulation performance according to the present invention for achieving the above object is provided in the solar cell module in the heat dissipation sheet for dissipating heat generated by the solar cell module, the lower portion of the solar cell module A base portion attached to and formed with a plurality of heat dissipation holes penetrating up and down; And a heat dissipation part attached to a lower part of the base part and dissipating heat transferred from the solar cell module through the base part to the outside.

The base portion is attached to the lower surface of the protection portion formed to surround the outer circumferential surface of the solar cell to protect the surface of the solar cell constituting the solar cell module, the heat dissipation portion is a metal layer attached to the lower surface of the base portion, Anodizing layer is attached to the lower surface of the metal layer, and characterized in that it comprises a heat dissipation coating layer attached to the lower surface of the anodizing layer.

The heat dissipation part may further include an insulating layer interposed between the base part and the metal layer and between the anodizing layer and the heat dissipation coating layer.

The base portion is characterized in that a plurality of air tunnels extending toward the opposite side from the edge side of the base portion in communication with the heat dissipation holes while being perpendicular to the extending direction of the heat dissipation holes.

Solar cell module according to the present invention for achieving the above object is a solar cell; A protection unit configured to fix the solar cell and surround an outer circumferential surface of the solar cell in order to protect the surface of the solar cell; A heat dissipation part attached to the lower part of the protection part and including a base part having a plurality of heat dissipation holes penetrating up and down, and a heat dissipation part attached to the bottom part of the base part and dissipating heat transferred from the solar cell to the outside to the outside It characterized in that it comprises a sheet.

The protection part includes a first protection part and a second protection part which are disposed in close contact with the upper and lower parts of the solar cell, respectively, and the heat dissipation part is attached to the lower surface of the metal layer and the metal layer attached to the bottom of the base part. It characterized in that it comprises an anodizing layer and a heat dissipation coating layer attached to the lower surface of the anodizing layer.

The heat dissipation part may further include an insulating layer interposed between the base part and the metal layer and between the anodizing layer and the heat dissipation coating layer.

The base portion is characterized in that a plurality of air tunnels extending toward the opposite side from the edge side of the base portion in communication with the heat dissipation holes while being perpendicular to the extending direction of the heat dissipation holes.

According to the heat dissipation sheet having improved heat dissipation and insulation performance according to the present invention, the heat generated from the solar cell module is quickly transferred to and released from the heat dissipation hole through the heat dissipation hole, so that the solar cell module can be quickly cooled, and the electrical layer is insulated. As a result of the insulation, the solar cell module not only increases power generation efficiency but also maintains durability for a long time.

1 is a partial cutaway perspective view of a solar cell module according to the present invention.
2 is a cross-sectional view illustrating a coupling process of the components of the solar cell module shown in FIG.
3 is a cross-sectional view of the solar cell module shown in FIG.
Figure 4 is an exploded perspective view of the heat dissipation sheet shown in Figs.
5 is a cross-sectional view of the heat radiation sheet shown in FIG.
6 is a cross-sectional view of the heat radiation sheet according to the second embodiment of the present invention.
Figure 7 is a perspective view of the heat dissipation sheet according to the third embodiment of the present invention.
8 is a cross-sectional view of the heat radiation sheet shown in FIG.

Hereinafter, a heat dissipation sheet having improved heat dissipation and insulation performance and a solar cell module 100 having the same will be described in detail with reference to the accompanying drawings. 1 to 5 illustrate a heat dissipation sheet 130 having improved heat dissipation and insulation performance and a solar cell module 100 having the same according to the present invention.

1 to 5, the solar cell module 100 having the heat dissipation sheet 130 having improved heat dissipation and insulation performance is fixed to the solar cell 110 and the solar cell 110. In order to protect the surface of the solar cell 110, the protection unit 120 formed to surround the outer peripheral surface of the solar cell 110, and a plurality of heat dissipation holes attached to the lower portion of the protection unit 120 and penetrates up and down ( 141 is a heat radiation including a heat dissipation unit 150 is attached to the bottom portion 140 and the bottom portion 140 is formed to discharge the heat transferred from the solar cell module 100 through the base portion 140 to the outside The tempered glass plate 160 is disposed on the upper surface of the sheet 130 and the protective part 120.

The solar cell 110 is a semiconductor device that converts light into electricity, and the minimum unit is called a cell, and since the voltage from one cell is usually 0.5v to 0.6v, it is very small. Connect in series to get a few volts to hundreds of volts or more.

 The protection unit 120 is an essential material for maintaining the lifespan of the solar cell module 100 for a long time, and a tempered glass plate 160 that is bonded to the buffer material and the solar cell 110 to prevent damage to the solar cell 110. ) And the first protective part 121 and the second protective part disposed in close contact with the upper and lower portions of the solar cell 110, respectively, as shown to serve as an adhesive for bonding the heat dissipation part 150 to be described later. 122).

The first protective part 121 and the second protective part 122 are used in the form of a sheet, and the material is ethylene vinyl acetate (EVA) which is a copolymer of ethylene and vinyl acetate. acetate) or a fluororesin, and the like, and EVA was applied in this embodiment.

The first protection part 121 and the second protection part 122 are disposed in close contact with the top and bottom surfaces of the solar cell 110, respectively, as shown in FIG. 2, but through a laminating process. As shown in the figure, one layer is formed to surround the surface of each solar cell 110. That is, the first protection part 121 and the second protection part 122 are bonded to each other in the upper and lower parts of the solar cell 110 through a laminating process to be bonded to surround the outside of the solar cell 110. will be.

The heat dissipation sheet 130 is attached to the lower portion of the solar cell module 100 to emit heat generated from the solar cell module 100, and will be described in detail with reference to FIGS. 4 and 5.

The heat dissipation sheet 130 is attached to the lower surface of the protection unit 120 formed to surround the outside of the solar cell 110 in order to protect the solar cell 110 is heat from the protection unit 120 It includes a base portion 140 to be transmitted, and a heat dissipation portion 150 for dissipating heat transferred through the base portion 140 to the outside.

The base 140 may include a metal material such as aluminum, copper, stainless steel, zinc, or a material of polycarbonate, epoxy, or a series such as PET, PEN, or PEI.

The base portion 140 is formed with a plurality of heat dissipation holes 141 penetrating the upper and lower, the lower portion 140 from the solar cell module 100, that is, the solar cell 110 and the protection unit 120. The heat dissipation unit 150 for dissipating heat transmitted through the outside is attached.

4 to 100 heat dissipation holes 141 are formed in 1 cm 2, and the heat dissipation holes 141 have a diameter of 1 μm to 100 μm, preferably 3 μm to 20 μm. Form.

The heat dissipation unit 150 includes a metal layer 151 adhered to the base 140 and a heat dissipation coating layer 153 adhered to the metal layer 151.

The metal layer 151 is made of carbon nanotubes or materials having high thermal conductivity such as copper, pure silver, aluminum, copper, stainless steel, zinc, and the like, and other materials such as graphene and graphite.

The heat dissipation coating layer 153 includes the microparticles 154 and the binder 155 of the microparticles 154. Although the thickness of the said heat radiation coating layer 153 is not specifically limited, For example, it is formed in about 5 micrometers-about 1 mm.

An anodizing layer 152 adhered to the metal layer 151 may be further provided between the metal layer 151 and the heat dissipation coating layer 153.

The anodizing layer 152 forms an aluminum oxide film on the surface of the aluminum by using an electrical or chemical method or changes the surface of the aluminum into an alumina ceramic, and has strength, wear resistance, corrosion resistance, and electrical insulation.

As the method for forming the anodizing layer 152, anodization, sulfuric acid using sulfuric acid, oxalic acid using fish, and sulfuric acid and oxalic acid using mixed acid may be used. Of course, the anodizing layer may be a metal material having a high thermal conductivity other than aluminum.

In this embodiment, the structure in which the anodizing layer 152 is attached only to the top surface of the metal layer 151 is applied. However, the structure may be attached only to the bottom surface of the metal layer 151, and may be attached to both the top and bottom surfaces of the metal layer 151. Alternatively, the anodizing layer 152 may be omitted.

The microparticles 154 may uniformly form a fine concavo-convex shape on the entire surface of the heat dissipation coating layer 153. Thus, by forming a fine concavo-convex shape on the entire surface of the heat dissipation coating layer 153, the surface area can be expanded to increase the heat dissipation function from the surface.

The fine particles 154 may be applied to inorganic particles and organic particles, and specific examples of the inorganic particles include metal particles such as aluminum, iron, and alloys, inorganic oxides such as silicon dioxide, aluminum oxide, zinc oxide, and zirconium dioxide. Or other aluminum hydroxide, barium sulfide, magnesium silicate, boron nitride, silicon carbide, silicon nitride, aluminum nitride, zircon silicate, or the like, or a mixture thereof may be used. Specifically, as the organic particles, acrylic resins, acrylonitrile resins, polyurethanes, polyvinyl chlorides, polystyrenes, polyacrylonitriles, polyamides, and the like can be used. Among these, metal particles or inorganic oxide particles having high thermal conductivity are preferable.

In the case where the microparticles 154 are metal particles or inorganic oxide particles, the heat dissipation is enhanced because heat that is conducted from the side can be directly transferred to the surface. As the fine particles 154, particles having a relatively high thermal conductivity and a high electrical resistance value are also preferable. Examples of such particles include inorganic nitrides such as boron nitride and silicon nitride. In the case where the microparticles 154 are such particles, heat dissipation can be increased, while conductivity can be lowered.

The shape of the microparticles 154 is not specifically limited, For example, spherical shape, a cubic shape, etc. are mentioned. Among these, it is preferable that it is spherical shape, ie beads which can form minute unevenness | corrugation easily and reliably in a desired size on the surface.

The compounding amount of the microparticles 154 and the binder 155 is appropriately blended in consideration of the heat dissipation effect according to the surface area of the uneven surface formed by the microparticles 154 and the thermal diffusion rate according to the distance between the microparticles 154. It is preferable.

The binder 155 contains a polymer as a main material and is not particularly limited. Examples of the polymer include an acrylic resin, polyurethane, polyester, polyolefin, fluorine resin, silicone resin, polyamideimide, epoxy resin, and ultraviolet curable resin. These polymers can be mentioned, These polymers can be used 1 type or in mixture of 2 or more types.

In particular, as the polymer, a polyol having high processability and capable of easily forming a heat dissipation layer by means such as coating is preferable. As said polyol, For example, the polyol obtained by superposing | polymerizing the monomer component containing a hydroxyl-containing unsaturated monomer,

The polyester polyol etc. which are obtained on the conditions of hydroxyl excess are mentioned, These can be used individually or in mixture of 2 or more types.

The heat dissipation coating layer 153 having the above-described configuration not only has excellent insulation performance and heat dissipation performance, but also has excellent heat resistance and adhesive strength, and further enables thin film to ensure product reliability and improve product quality. Can be.

Tempered glass plate 160 is to protect the solar cell 110 and the protective layer, it uses a transparent or translucent tempered glass.

The frame portion of the solar cell module 100 is coupled to the support frame 170 made of aluminum, etc., the packing member 171 for sealing and insulation with the solar cell module 100 on the inner peripheral surface of the support frame 170 Is provided.

Meanwhile, an insulating layer for electrical insulation between the base 140 and the metal layer 151 and between the anodizing layer 152 and the heat dissipation coating layer 153 of the heat dissipation sheet 230 having improved heat dissipation and insulation performance according to the present invention ( 180 may be further provided.

Referring to FIG. 6, the insulating layer 180 is interposed between the base 140 and the metal layer 151 and between the anodizing layer 152 and the heat dissipation coating layer 153 to insulate the components. have.

The insulating layer 180 may be formed of a material of a series such as PET, PEI, PEN, PPS, PI, in addition to the above material may be applied to a material having high thermal conductivity while having insulation. For example, the product name 'Duralco 128' or 'Duralco 4461' or 'Duralco 45381' of the US 'Cortronix Corporation' may be used.

In this embodiment, the insulating layer 180 is applied to the top surface of the anodizing layer 152 and the bottom surface of the metal layer 151, respectively, but may be attached only to the bottom surface of the anodizing layer 152, the metal layer The bottom surface of 151 may be omitted, and may be attached to both the top and bottom surfaces of the anodizing layer 152, or may be attached only to the top surface of the metal layer 151. Alternatively, the insulating layer 180 may be omitted. Do.

Meanwhile, FIGS. 7 to 8 illustrate a third embodiment of the heat dissipation sheet having improved heat dissipation and insulation performance. 7 to 8, the heat dissipation sheet 330 is attached to the lower surface of the protection part 120 formed to surround the outside of the solar cell 110 so that heat is transferred from the protection part 120. It includes a base portion 240 formed with a plurality of heat dissipation holes 241 penetrating up and down, and a heat dissipation portion 150 for dissipating heat transferred through the base portion 240 to the outside.

The base portion 240 has a plurality of air tunnels 242 extending toward the opposite side from the edge side of the base portion 240 in communication with the heat dissipation holes 241 while being perpendicular to the extending direction of the heat dissipation holes 241. It is. The air tunnels 242 are formed in directions perpendicular to each other and are formed to communicate with each other. The air tunnel 242 may have a diameter of 1 μm to 100 μm and may have a diameter of 3 μm to 20 μm to correspond to the size of the heat dissipation hole 241.

The heat dissipation sheet 330 having the structure as described above has an advantage of improving heat dissipation performance by the air tunnel 242 formed to communicate with all the heat dissipation holes 241 formed in the base 240.

The heat dissipation sheet and the heat dissipation sheet having the improved heat dissipation and insulation performance and the solar cell module having the same have been described with reference to the exemplary embodiment shown in the drawings. However, these are merely exemplary and common knowledge in the art. Those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom.

Accordingly, the true scope of protection of the present invention should be defined by the appended claims.

100: solar cell module 110: solar cell
120: protection unit 130: heat dissipation sheet
140: base 150: heat dissipation
151: metal layer 152: anodizing layer
153: heat dissipation coating layer 154: fine particles
155: binder 160: tempered glass plate
170: support frame 171: packing member
180: insulating layer 242: air tunnel

Claims (8)

In the heat dissipation sheet provided in the solar cell module for dissipating heat generated by the solar cell module,
A base portion attached to a lower portion of the solar cell module and having a plurality of heat dissipation holes penetrating up and down;
And a heat dissipation unit attached to a lower part of the base part and dissipating heat transferred from the solar cell module through the base part to the outside.
The base portion is attached to the lower surface of the protection portion formed to surround the outer peripheral surface of the solar cell to protect the surface of the solar cell constituting the solar cell module,
The heat dissipation unit includes a metal layer attached to a lower surface of the base portion, an anodizing layer attached to a lower surface of the metal layer, and a heat dissipation coating layer attached to a lower surface of the anodizing layer,
The heat dissipation sheet is a heat dissipation sheet with improved heat dissipation and insulation performance, characterized in that further comprising an insulating layer interposed between the base and the metal layer, and between the anodizing layer and the heat dissipation coating layer. delete delete The heat dissipation and insulation of claim 1, wherein the base portion is formed with a plurality of air tunnels extending from an edge side of the base portion to an opposite side surface so as to communicate with the heat dissipation holes while being perpendicular to an extension direction of the heat dissipation holes. Heat sink with improved performance. A solar cell;
A protection unit configured to fix the solar cell and surround an outer circumferential surface of the solar cell in order to protect the surface of the solar cell;
A heat dissipation part attached to the lower part of the protection part and including a base part having a plurality of heat dissipation holes penetrating up and down, and a heat dissipation part attached to the bottom part of the base part and dissipating heat transferred from the solar cell to the outside to the outside A sheet;
The protection part includes a first protection part and a second protection part disposed in close contact with the upper and lower parts of the solar cell, respectively.
The heat dissipation unit includes a metal layer attached to a lower surface of the base portion, an anodizing layer attached to a lower surface of the metal layer, and a heat dissipation coating layer attached to a lower surface of the anodizing layer,
The heat dissipation unit further comprises an insulating layer interposed between the base and the metal layer, and between the anodizing layer and the heat dissipation coating layer. delete delete The solar cell module according to claim 5, wherein the base portion has a plurality of air tunnels extending from the edge side of the base portion toward the opposite side to be in communication with the heat dissipation holes while being perpendicular to the extending direction of the heat dissipation holes. .
KR1020120044113A 2012-04-26 2012-04-26 The radiation of heat sheet and solar cell module has this KR101370677B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230050041A (en) 2021-10-07 2023-04-14 한국생산기술연구원 Heat-dissipating steel plate-type shingled solar module and manufacturing method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019165505A1 (en) * 2018-02-27 2019-09-06 Newsouth Innovations Pty Limited Apparatus for cooling a photovoltaic module
KR102263771B1 (en) * 2019-05-28 2021-06-11 강성환 Carbon Fiver Reinforced Polymer With Improved Heat Radiating Efficiency, And Solar Module Having The Same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970026308A (en) * 1995-11-13 1997-06-24 전성원 Stacked Cell Structure
KR20050113937A (en) * 2004-05-31 2005-12-05 주식회사 엘지화학 Adhesive radiation sheet
JP2011096989A (en) * 2009-11-02 2011-05-12 Keiwa Inc Heat radiation sheet for back of solar cell module, and solar cell module using the same
KR20120019929A (en) * 2010-08-27 2012-03-07 (주)템솔 Heat radiating back sheet for photo voltaic module

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970026308A (en) * 1995-11-13 1997-06-24 전성원 Stacked Cell Structure
KR20050113937A (en) * 2004-05-31 2005-12-05 주식회사 엘지화학 Adhesive radiation sheet
JP2011096989A (en) * 2009-11-02 2011-05-12 Keiwa Inc Heat radiation sheet for back of solar cell module, and solar cell module using the same
KR20120019929A (en) * 2010-08-27 2012-03-07 (주)템솔 Heat radiating back sheet for photo voltaic module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230050041A (en) 2021-10-07 2023-04-14 한국생산기술연구원 Heat-dissipating steel plate-type shingled solar module and manufacturing method thereof

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