JP5828921B2 - Heat transfer sealing composite laminated member and solar cell module having the same - Google Patents

Description

  In particular, the present invention relates to a heat transfer sealing composite laminated member in a semiconductor device and a solar cell module having the member.

  The conventional solar cell module has a configuration in which a transparent substrate, a first sealing resin layer, a photoelectric conversion element, a second sealing resin layer, and a back sheet are provided in order from the upper part to the lower part. By the resin layer and the second sealing resin layer, the influence of moisture due to the external environment on the photoelectric conversion element is avoided.

  However, the conversion efficiency of sunlight into electricity in the conventional photoelectric conversion element is only 14% to 22%, and the energy that could not be converted is changed into heat amount or reflected to the external environment. Since the operating temperature of the battery module rises, the photoelectric conversion efficiency of the solar cell module is lowered.

  In order to solve the above-mentioned problem, an improved solar cell module improved from the conventional product has been devised, as shown in Patent Document 1 or Patent Document 2, for example. In the conventional improved solar cell module, since the heat dissipation member is provided on the side opposite to the second sealing resin layer in the back sheet, the heat dissipation area on the outer surface of the stacked configuration of the solar cell module is increased by the heat dissipation member. Due to the expansion, a reduction in the operating temperature of the solar cell module was achieved.

Chinese Patent Publication No. 100547811 China Utility Model Registration Notice No. 20254464

However, the conventional improved solar cell module using materials such as polyethylene terephthalate (PET) and ethylene-vinyl acetate copolymer resin (EVA) in Patent Documents 1 and 2 are used. Has the following problems.
(1) Since the current packaging process of the solar cell module has to be changed, the process convenience is significantly impaired.
(2) The volume and thickness of the entire solar cell module increased by the installation of the heat dissipating member limit applicability of the solar cell module to other electronic members.
(3) Since the photoelectric conversion element is sealed by the first sealing resin layer and the second sealing resin layer made of the same material having low thermal conductivity, the generated heat amount is transferred to the second sealing resin layer. Since it is difficult to transmit the heat dissipation member to the heat dissipation member via the stop resin layer and the back sheet, even if the heat dissipation member is installed on the outer surface of the conventional improved solar cell module, the operating temperature of the solar cell module cannot be lowered.

  Therefore, the present invention has been filed, and the amount of heat generated by the photoelectric conversion element is efficiently transferred to lower the operating temperature of the solar cell module, and the photoelectric conversion efficiency of the solar cell module, and It aims at providing the solar cell module which has the heat-transfer sealing composite laminated member which improves a power generation output, and the said member.

  Another aspect of the present invention aims to alleviate the aging of the solar cell module due to long-time high-temperature operation when the volume and the packaging process of the solar cell module are not changed.

The invention of claim 1 of the present application is a heat transfer sealing composite laminated member,
Thermal conductivity a heat transfer composite layer is not 0.5 W / mK to 8 W / mK, and a thermoplastic resin, while being dispersed in the thermoplastic resin, the content of the heat transfer composite layer 40 by volume percent to a heat transfer composite layer and a 70 volume percent der Ru-free machine particles,
An adhesive resin layer provided on the heat transfer composite layer and having a thermal conductivity of 0.05 W / mK to 0.4 W / mK;
The thickness of the adhesive resin layer occupies 0.1% to 10% of the thickness of the heat transfer sealing composite laminated member, and the total thermal resistance value is 0.01 ° C.-in ² / W to 0.00. Provided is a heat transfer sealing composite laminated member characterized by being 72 ° C.-in ² / W.

  The invention according to claim 2 of the present application is characterized in that the thermal conductivity of the thermoplastic resin in the heat transfer composite layer is 0.05 W / mK to 0.4 W / mK. A heat sealed composite laminate member is provided.

The invention of claim 3, median particle size before cinchona machine particles is not less 20 nanometers, the inorganic particles are inorganic oxide is selected from the group consisting an inorganic nitride, and combinations thereof The heat transfer sealing composite laminated member according to claim 1, comprising one material.

The invention of claim 4, the front is in the middle diameter of the cinchona machine particles 20 nm or less, the heat transfer seal according to claim 1, characterized in that inorganic particles have a silicon carbide A composite laminate member is provided.

The invention of claim 5, before a 3 nm to median particle diameter from 1 nm quinic machine particles, inorganic particles, aluminum oxide (aluminum oxide, Al2O3), aluminum nitride (aluminum Nitride, 4. The heat transfer sealing composite according to claim 3, comprising a material selected from the group consisting of AlN), boron nitride (BN), silicon carbide, and combinations thereof. 5. A laminated member.

The invention according to claim 6 of the present application is characterized in that the sum of the thickness of the heat transfer composite layer and the thickness of the adhesive resin layer is 20 micrometers to 600 micrometers . A heat transfer sealing composite laminated member according to one item is provided.

The invention of claim 7 of the present application includes a transparent substrate,
A sealing resin layer provided on the transparent substrate;
A photoelectric conversion element provided in the sealing resin layer;
It is a heat-transfer sealing composite laminated member as described in any one of Claims 1 thru | or 6, Comprising: While being provided in the said sealing resin layer and a photoelectric conversion element, adhesion | attachment of the said heat-transfer sealing composite laminated member A heat transfer sealing composite laminated member in which a resin layer is in contact with the sealing resin layer; and
And a back sheet provided on the heat transfer composite layer of the heat transfer sealing composite laminated member.

  Invention of Claim 8 of this application has an additional heat-transfer composite layer formed in the periphery of the said heat-transfer sealing composite laminated member and a back sheet, and contacting the said photoelectric conversion element. The solar cell module described in 1. is provided.

The invention of claim 9 of the present application includes a heat transfer sealing member,
The metal frame attached to the periphery of the transparent substrate, the sealing resin layer, the heat transfer sealing composite laminate member, and the back sheet via the heat transfer sealing member. A solar cell module is provided.

  The invention of claim 10 of the present application is formed between the heat transfer sealing composite laminated member and the heat transfer sealing member and between the back sheet and the heat transfer sealing member, and the photoelectric conversion element. The solar cell module according to claim 9, further comprising an additional heat transfer composite layer in contact with the solar cell module.

This gun onset Ming, the additional heat transfer composite layer comprises a thermoplastic resin, a non-machine particles that will be dispersed in the thermoplastic resin,
It is not 40 volume percent content in the pre-quinic machine particles in the additional heat transfer composite layer was 70% by volume,
The solar cell module according to claim 8, wherein the additional heat transfer composite layer has a thermal conductivity of 0.5 W / mK to 8 W / mK.

This gun onset Ming, the additional heat transfer composite layer comprises a thermoplastic resin, a non-machine particles that will be dispersed in the thermoplastic resin,
It the content of free machine particles that put in the additional heat transfer composite layer is from 40 volume percent of 70% by volume,
The solar cell module according to claim 10, wherein the additional heat transfer composite layer has a thermal conductivity of 0.5 W / mK to 8 W / mK.

The present invention of claim 1 1, the thermal conductivity of the heat transfer sealing member, the solar cell according to claim 9, characterized in that to free 0.05 W / mK is 0.4 W / mK Module.

In the present invention, by limiting the content of inorganic particles per aggregate of the heat transfer composite layer and the ratio of the thickness of the adhesive resin layer to the heat transfer composite layer and the adhesive resin layer to the above numerical range, Since it succeeded in controlling the total thermal resistance value of the heat-sealing composite laminated member to 0.72 ° C.-in ² / W or less, when the heat-transfer sealing composite laminated member of the present invention is applied to a solar cell module, Since the amount of heat generated by the photoelectric conversion element is efficiently dissipated, the aging of the solar cell module due to high temperature is mitigated, and a heat dissipation path for conducting the amount of heat to the heat dissipation member is provided, thereby providing photoelectrical power for the solar cell module. Conversion efficiency and power generation output are also improved.

The total heat resistance value of the heat transfer sealing composite laminated member according to the present invention having the heat transfer composite layer and the adhesive resin layer is 0.01 ° C.-in ² / W to 0.72 ° C.-in ² / W. However, a range of 0.1 ° C.-in ² / W to 0.72 ° C.-in ² / W is preferable. The heat transfer sealing composite laminated member has a resistance value of 1.0 × 10 ¹⁴ Ωcm, a breakdown voltage of 22 kV / mm, a dielectric breakdown voltage water absorption of 0.1% or less (20 ° C./24 hours), ( (Measurement by ASTM D1204 measurement method) 3% or less longitudinal shrinkage (measurement by ASTM D1204 measurement method), 1.0% or less lateral shrinkage (120 ° C./3 minutes). Absent.

  Further, in the present invention, in the solar cell module, the heat transfer composite layer and the heat transfer composite layer of the heat transfer sealing composite laminated member, or the heat dissipation path directly via the heat transfer composite layer is passed. By doing so, the amount of heat generated by the photoelectric conversion element is released to the outside of the solar cell module, so that the operating temperature of the solar cell module can be reduced.

  Further, according to the heat dissipation composite layer of the heat transfer sealing composite laminated member, the heat transfer sealing member, and the metal frame in the solar cell module, the amount of heat generated by the photoelectric conversion element can be reduced. By releasing to the outside, the operating temperature of the solar cell module can be reduced.

  Further, in the solar cell module, a heat dissipation path composed of the heat transfer composite layer of the heat transfer sealing composite laminated member, the heat transfer sealing member, and the metal frame, or a heat dissipation path directly via the additional heat transfer composite layer By passing, the amount of heat generated by the photoelectric conversion element is released to the outside of the solar cell module, so that the operating temperature of the solar cell module can be reduced.

Further, the adhesive resin layer includes a thermoplastic resin, and the thermoplastic resin in the heat transfer composite layer, the additional heat transfer composite layer, and the adhesive resin layer is, for example, poly (ethylene-co-propylene) (poly (ethylene). -Co-propylene)), poly (propylene-co-ethylene) (poly (propylene-co-ethylene)), polyethylene ionomer, ethylene and ethylene-vinyl acetate copolymers, cross-linked polyethylene polymers, Polyolefin compounds that are not limited thereto.
For example, the thermoplastic resin may be an ethylene-acrylic copolymer resin, an ethylene-glycerol copolymer resin, or an ethylene-vinyl acetate copolymer resin. (Ethylene-vinyl acetate copolymer resin, EVA), polyvinyl butyral resin (PVB), thermoplastic polyurethane (also TPU), or polyethylene-glycidyl methacrylate (polyG). .

  The adhesive resin layer or the sealing resin layer may have an adhesive material such as a silicon resin or a hot melt adhesive.

  The sealing resin layer has a light transmittance of 92% or more, and includes, for example, ethylene-acrylic acid copolymer resin (ethylene-acrylate copolymer resin), ethylene-glycerol copolymer resin (ethylene-glycerin copolymer resin), Materials such as ethylene-vinyl acetate copolymer resin, polyvinyl butyral resin (PVB), thermoplastic polyurethane (thermoplastic polyurethane), TPU, or polyethylene-glycidyl methacrylate, MA.

  The transparent substrate is a substrate having a light transmittance of 92% or more, such as a glass substrate.

  The photoelectric conversion element may be a single crystal silicon solar cell or a polycrystalline silicon solar cell.

  The back sheet is preferably a plastic back sheet made of, for example, vinyl fluoride (PVF) or polyethylene terephthalate having excellent weather resistance and insulation.

  The inorganic particles have a particle diameter of 20 nanometers or less, and preferably have a particle diameter of 1 nanometer to 20 nanometers, or 1 nanometer to 3 nanometers. Are well dispersed in the thermoplastic resin, and the thermal conductivity of the heat transfer composite layer and the additional heat transfer composite layer having the thermoplastic resin is also improved.

In the packaging process of the solar cell module, the transparent substrate, the sealing resin layer, the photoelectric conversion element, the heat transfer sealing composite laminated member, and the back sheet are laminated, and the silicone material and the hot melt adhesive material are used for the metal frame. The solar cell module packaging process is completed by being injected into the interior and sealing the periphery of the laminated structure with the metal frame and connecting the line connection box and the wiring.
In addition, a sealing tape such as an acrylic foam tape, a polyethylene foam tape, a butyl rubber foam tape may be coated on the outer periphery of the laminated structure. The solar cell module packaging process is completed by inserting the laminated structure covered with the sealing tape into the metal frame.

As described above, in the heat transfer composite layer in the heat transfer sealing composite laminated member according to the present invention, inorganic particles are mixed at a predetermined ratio, and the thickness and adhesive resin of the heat transfer composite layer having a predetermined heat conductivity Since the ratio with the thickness of the layer is limited, a heat transfer sealing composite laminated member having a total thermal resistance value of 0.72 ° C.-in ² / W or less can be obtained.
According to this, by replacing the sealing resin layer of the conventional solar cell module and using the heat transfer sealing composite laminated member, sealing in conventional techniques, exclusion of water, and adhesion of the photoelectric conversion element The amount of heat generated by the photoelectric conversion element is released to the outside of the solar cell module without increasing the volume of the solar cell module or changing the packaging process. The photoelectric conversion efficiency and power generation output of the module can be improved.

It is a side view which shows the structure of the heat-transfer sealing composite laminated member which concerns on this invention. It is a graph which shows the heat conductivity of the conventional sealing resin layer and the heat-transfer sealing composite laminated member which concerns on Example 1 and Example 3 of this invention. It is a side view which shows the structure of the solar cell module which concerns on this invention. It is a side view which shows the structure of the other solar cell module which concerns on this invention. It is the graph which compared the operating temperature of the amount of sunlight of the solar cell module which concerns on Example 5 of this invention, and the conventional solar cell module as described in the comparative example 2. FIG. It is the graph which compared the power generation output of the amount of sunlight of the solar cell module which concerns on Example 5 of this invention, and the conventional solar cell module as described in the comparative example 2. FIG.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Those skilled in the art to which the present invention pertains can not only understand the advantages and effects of the present invention based on the present specification, but also various modifications and changes without departing from the scope of the present invention. The present invention can be implemented or applied with changes.

(Production Example 1)
This production example relates to a heat transfer composite material. First, an ethylene methacrylic acid resin (EMA) and aluminum oxide are prepared, and a melting index (melting index of 190 degrees Celsius) in the ethylene methacrylic acid resin, MI) is 8 and its thermal conductivity is 0.32 W / mK, while the median particle size of the aluminum oxide is 5 nanometers.

Further, when the aluminum oxide and ethylene methacrylic acid resin in the mixing ratio shown in Table 1 is mixed with a twin-screw mixing extruder, the heat transfer composite material experiments was 1 to Experiment was 4 below is obtained. Hereinafter, in Table 1, the thermal conductivity of the heat transfer composite material of each experimental product measured using a heat transfer measuring device (measuring method: ASTM 1146) is shown.

As shown in Table 1, when the content ratio of aluminum oxide to ethylene methacrylic acid resin is increased, the thermal conductivity of the heat transfer composite material is sequentially increased from 0.32 W / mK (experiment 1) to 1.51 W / mK (experiment). It can be seen that it is increased to object 4).

(Comparative Example 1)
This comparative example relates to a sealing layer of the prior art. In the prior art, pure ethylene-vinyl acetate copolymer resin is used as a raw material, and inorganic particles are completely added to the ethylene-vinyl acetate copolymer resin. In addition, the inflation method is used to produce a sealing layer having an area of 15 centimeters × 15 centimeters and a thickness of 220 micrometers using pure ethylene-vinyl acetate copolymer resin. The total thermal resistance value of the sealing layer according to this conventional technique is shown in Table 2 described later.

(Examples 1 to 3)
The heat-transfer sealing composite laminated member in Example 1 thru | or Example 3 which concerns on this invention is manufactured with the heat-transfer composite material of the test thing 2 thru | or the test thing 4 in the said manufacture example 1. FIG. The detail of the manufacturing process of these heat-transfer sealing composite laminated members is as described later.

Using the above-described inflation method, the above-described ethylene-vinyl acetate copolymer resin is used as a raw material, and a heat transfer composite layer having an area of 15 centimeters × 15 centimeters and a thickness of 200 micrometers is manufactured. Then, a 20 μm thick adhesive resin layer made of polyethylene-glycidyl methacrylate is formed on the heat transfer composite layer to complete the heat transfer sealing composite laminate member.

  As shown in FIG. 1, the heat transfer sealing composite laminated member manufactured by the method described above includes a heat transfer composite layer 10 and an adhesive resin layer 20.

  The heat transfer composite layer 10 includes a thermoplastic resin 101 and a plurality of inorganic particles 102 dispersed in the thermoplastic resin 101.

  The adhesive resin layer 20 is provided on the heat transfer composite layer 10, and the thermal conductivity of the adhesive resin layer 20 is 0.27 W / mK.

The total heat resistance value of the heat-transfer sealing composite laminated member having the heat-transfer composite layer 10 and the adhesive resin layer 20 according to Example 1 to Example 3 is 0.72 ° C.-in ² / W or less. The details of the measurement results are as shown in Table 2.

(Experimental example 1)
This experimental example relates to the thermal conductivity of the heat transfer sealing composite laminated member. In order to measure the thermal conductivity of the heat transfer sealing composite laminated member, in this experimental example, Example 1 and Example 3 are used. The heat transfer sealing composite laminate member according to the present invention and the conventional sealing layer according to Comparative Example 1 are used, and the back sheet, the heat transfer sealing composite laminate member or the conventional sealing layer, and the sealing resin are sequentially formed from the bottom to the top. By laminating a layer and a transparent glass substrate, a measurement sample having thermal conductivity of the heat transfer sealing composite laminated member is manufactured.

  In order to ensure the accuracy of the experiment, the back sheet, sealing resin layer, and transparent glass substrate in each sample are made of the same material having the same thickness, and the thermal conductivity of each sample is measured. Performed in a similar environment. Therefore, the thermal conductivity of the conventional sealing layer and the heat transfer sealing composite laminated member according to Example 1 and Example 3 can be accurately measured. Details of the measurement method are as described later.

  First, the same heat source is applied to the transparent glass substrate of each sample, the distance between the heat source and the transparent glass substrate is 20 centimeters, and the heat source area is 10 square centimeters. The time transmitted from the heat source to the back sheet through the transparent glass substrate is measured by an infrared measurement method on the back sheet of each sample. The measurement results are as shown in FIG.

  As shown in FIG. 2, it takes 300 seconds to raise the temperature of the back sheet to 30 degrees Celsius through the transparent glass substrate from the heat source in the sample including the sealing layer, but Example 1 and Example In contrast, in a sample comprising three heat transfer sealing composite laminate members, the time to raise the temperature of the back sheet from the heat source through the transparent glass substrate to 30 degrees Celsius is only 250 seconds, or only 90 to 100 seconds. According to this experimental result, it turns out that the heat-transfer sealing composite laminated member of Example 1 and Example 3 has the outstanding heat conductivity.

(Examples 4 to 6)
The solar cell modules in Examples 4 to 6 according to the present invention are manufactured by the heat transfer sealing composite laminated member of Examples 1 to 3, and these solar cell modules are manufactured according to the manufacturing process described later. It is what is done.

First, a transparent glass substrate, an ethylene-vinyl acetate copolymer resin layer, and a heat transfer seal whose total thickness of 72 single crystal silicon solar cells (sold by Motech Co., Ltd.) is 220 micrometers. A laminated composite member and a polyester series back sheet are sequentially laminated, and pressure is applied to the ethylene-vinyl acetate copolymer resin layer at 140 degrees Celsius, and the ethylene-vinyl acetate copolymer resin A laminated structure is obtained by performing a cross-linking solidification reaction until the cross-linking density reaches 85% or more.

  Thereafter, a thermally conductive silicon resin sealing member containing aluminum oxide is injected into the frame made of aluminum to obtain an aluminum frame including the heat transfer silicon resin sealing member.

  Subsequently, an aluminum frame including the heat transfer silicon resin sealing member is used to seal the laminated structure, and then an aging process is performed to complete the solar cell module packaging process.

  Each of the solar cell modules 1 according to Examples 4 to 6 manufactured by the method described above has a similar configuration, but differs in the material of the heat transfer composite layer of the solar cell module.

  As shown in FIG. 3, the solar cell module 1 includes a heat transfer composite layer 10, an adhesive resin layer 20, a transparent substrate 30, a sealing resin layer 40, a plurality of photoelectric conversion elements 50, and a back sheet 60 shown in FIG. 1. , A metal frame 70, and a heat transfer sealing member 80.

  The transparent substrate 30 is a transparent glass substrate having a light transmittance greater than 92% and a thickness of 3 millimeters.

  The sealing resin layer 40 is an ethylene-vinyl acetate copolymer resin layer provided on the transparent substrate 30 and having a thickness of about 450 micrometers and a thermal conductivity of 0.32 W / mK.

  The plurality of photoelectric conversion elements 50 are composed of 72 single-crystal silicon solar cells each having a thickness of 180 micrometers arranged in the sealing resin layer 40.

  The adhesive resin layer 20 is made of polyethylene-glycidyl methacrylate, has a thickness of 20 micrometers, and part of the surface thereof is directly opposite to the sealing resin layer 40 in the plurality of photoelectric conversion elements 50. The other part of the surface of the adhesive resin layer 20 is directly adhered to the part of the bottom surface of the sealing resin layer 40 that is not in contact with the plurality of photoelectric conversion elements 50. According to the configuration described above, since the plurality of photoelectric conversion elements 50 are sealed by the adhesive resin layer 20 and the sealing resin layer 40, the plurality of photoelectric conversion elements 50 are affected by moisture in the external environment. There is no.

  The heat transfer composite layer 10 is a composite layer having a thickness of 200 micrometers and manufactured from an ethylene methyl acrylate resin compound and aluminum oxide powder. The heat transfer composite layer 10 is provided on the surface of the adhesive resin layer 20 on the side opposite to the plurality of photoelectric conversion elements 50.

  The back sheet 60 is a polyester-based back sheet having a thickness of 350 micrometers. The back sheet 60 has a thermal conductivity of 0.28 W / mK. The heat transfer composite layer 10 is disposed between the adhesive resin layer 20 and the back sheet 60.

  The metal frame 70 is a heat radiating aluminum frame having a recessed groove, while the heat transfer sealing member 80 includes the transparent substrate 30, the sealing resin layer 40, the adhesive resin layer 20, and the heat transfer composite layer 10. , And the peripheral edge of a component such as the back sheet 60. The heat transfer sealing member 80 is silicon having a thermal conductivity of about 1.0 W / mK, and aluminum oxide is mixed therein.

(Example 7)
This implementation example is a solar cell module having a heat transfer sealing composite laminate member.

  As shown in FIG. 4, the solar cell module according to Example 7 is almost the same as the solar cell module according to Example 4 to Example 6, with the heat transfer composite layer 10, the adhesive resin layer 20, the transparent substrate 30, the sealing. The solar cell module 1 of the present embodiment further includes additional heat transfer, although it has a configuration including the resin-resin layer 40, the plurality of photoelectric conversion elements 50, the back sheet 60, the metal frame 70, and the heat transfer sealing member 80. The difference is that the composite layer 90 is provided. The additional heat transfer composite layer 90 is made of the same material as that of the heat transfer composite layer 10 in the first embodiment.

  The additional heat transfer composite layer 90 is formed between the heat transfer composite layer 10 and the heat transfer sealing member 80, between the adhesive resin layer 20 and the heat transfer sealing member 80, and between the back sheet 60 and the heat transfer. Between the sealing member 80 and the photoelectric conversion element 50, it is provided.

  More specifically, the additional heat transfer composite layer 90 includes two heat transfer stretching portions 91 and 92 and a heat transfer main body 93, and each of the heat transfer stretching portions 91 and 92 includes the heat transfer stretching portion 91 and 92, respectively. One heat transfer extension portion 91 in the additional heat transfer composite layer 90 is provided so as to extend on both sides of the main body 93 and is in direct contact with the photoelectric conversion element 50 and the sealing resin layer 40. The heat transfer main body 93 is disposed between the heat transfer composite layer 10 and the adhesive resin layer 20, and one side of the back sheet 60. And between the heat transfer composite layer 10 and the heat transfer sealing member 80, between the adhesive resin layer 20 and the heat transfer sealing member 80, and between the back sheet 60 and the heat transfer sealing member. 80, and the other heat transfer stretching portion 92 is provided on the back sheet 60. Located between the bottom surface and the heat transfer sealing member 80.

(Comparative Example 2)
This comparative example relates to a conventional solar cell module, and has substantially the same configuration as the solar cell module according to Example 4, but the heat transfer composite layer and the adhesive resin layer have a thickness of 450 micrometers. It differs in that it is replaced with a pure ethylene-vinyl acetate copolymer resin layer. The ethylene-vinyl acetate copolymer resin layer is located between the photoelectric conversion element and the back sheet, and each photoelectric conversion element 50 includes the ethylene-vinyl acetate copolymer resin layer and the sealing resin layer. 40 is sealed.

  Further, in the conventional solar cell module according to this comparative example, a general silicon layer having a thermal conductivity of only 0.36 W / mK replaces the heat transfer sealing member of the solar cell module according to Example 4. Has been adopted as.

(Experimental example 2)
This experimental example relates to the operating temperature of the solar cell module, and in order to verify whether the heat transfer sealing composite laminated member has an effect of reducing the operating temperature of the solar cell module, this experimental example The solar cell module according to Example 5 and the solar cell module according to the related art in Comparative Example 2 were compared, and the two solar cell modules were irradiated with the same amount of sunlight. The temperature of the measurement environment is 29 degrees Celsius to 31 degrees Celsius, and the standard output of the solar cell modules according to the examples and comparative examples is 230 W / 1.7 m ² .
Under the conditions described above, the operating temperature of the solar cell module according to Example 5 and the conventional solar cell module according to Comparative Example 2 was measured at different sunshine amounts using an infrared temperature measuring instrument from 12 noon to 1 pm. . The measurement results are shown in FIG. Moreover, the numerical value of the operating temperature shown in the figure is an average value of 9 groups of sampling.

  As shown in FIG. 5, since the thermal conductivity of the ethylene-vinyl acetate copolymer resin layer of the solar cell module according to the related art of Comparative Example 2 is only 0.32 W / mK, it is converted into electric energy by the photoelectric conversion element. Since the amount of heat that was not converted was not easily transferred to the adjacent normal silicon layer or back sheet via the ethylene-vinyl acetate copolymer resin layer, the excess amount of heat was continuously increased. Accumulate in the battery module.

On the other hand, the solar cell module according to Example 5 has a heat transfer composite layer having a thermal conductivity of 0.87 W / mK, and the total of the heat transfer sealing composite laminated member having the adhesive resin layer and the heat transfer composite layer. Since the thermal resistance value has reached 0.36 ° C.-in ² / W, the amount of heat that has not been converted into electrical energy by the photoelectric conversion element in the solar cell module according to Example 5 is reduced by the heat transfer sealing composite laminated member. Heat is efficiently transferred to the adjacent back sheet through the heat transfer sealing member and the metal frame, and the heat quantity is transferred to the heat transfer sealing member adjacent to the heat transfer sealing composite laminated member. Since it is heated, an excellent heat transfer path having a further heat dissipation effect with respect to the amount of heat generated by the photoelectric conversion element is obtained by the auxiliary effect of the heat transfer sealing member and the metal frame, so that the operating temperature of the solar cell module is Big It is lowered to.

(Experimental example 3)
This experimental example relates to the power generation output of the solar cell module. In this experimental example, it is verified whether or not the heat transfer sealing composite laminated member has an effect of improving the power generation output of the solar cell module. Therefore, the solar cell module according to Example 5 is compared with the solar cell module according to the related art in Comparative Example 2, and each of the two solar cell modules is irradiated with the same amount of sunlight. The temperature of the measurement environment is 29 degrees Celsius to 31 degrees Celsius, and the standard output of the solar cell modules according to the examples and comparative examples in the present invention is 230 W / 1.7 m ² .
Then, according to the above-described conditions, the solar cell module power generation output real-time monitoring system is used from 12 noon to 1 pm, and the solar cell module according to Example 5 and the conventional technology in Comparative Example 2 in different sunshine amounts Measure the power generation output of the battery module. The measurement results are as shown in FIG.

As shown in FIG. 6, when comparing the power generation output measured in the time zone from 12 noon to 1 pm in the solar cell module according to Example 5 and the solar cell module according to the related art in Comparative Example 2, It can be seen that the power generation output of the solar cell module according to Example 5 is about 6.4 W higher than the power generation output of the solar cell module according to the related art in Comparative Example 2.
Further, when compared with the cumulative total of the power generation output of the solar cell module for one day, the average power generation output of the solar cell module according to Example 5 is about 4 W higher than the average power generation output of the solar cell module according to the related art in Comparative Example 2. It can be seen that high power output is obtained.

(Experimental example 4)
This experimental example also relates to the power generation output of the solar cell module, but the comparison target was similarly selected to irradiate the three solar cell modules with a sunshine amount of 1000 W, respectively, in Examples 4 and 6. And a solar cell module according to the related art in Comparative Example 2, in which the temperature of the measurement environment is 31 degrees Celsius to 33 degrees Celsius, in the time zone from 10 am to 3 pm Using the power generation output real-time monitoring system, the results of measuring the power generation output at each point in the solar cell modules according to Example 4 and Example 6 and the solar cell module according to the related art in Comparative Example 2 are shown in Table 3 below. Shown in
According to Table 3 below, the difference in power generation output in Comparative Example 2, Example 4 and Example 6 is calculated based on the actual power generation output of Comparative Example 2.

As shown in Table 3, in the solar cell modules according to Example 4 and Example 6, the amount of heat generated by the photoelectric conversion element is heat transfer sealed due to the cooperative effect of the heat transfer sealing composite laminated member and the heat transfer sealing member. Since the heat transfer composite layer of the stop composite laminated member passes through the heat transfer sealing member and the metal frame toward one side, the heat dissipation rate and efficiency are improved.
Thereby, it turns out that the highest power generation output and the total power generation output of the day in the solar cell modules according to Example 4 and Example 6 exceeded the solar cell module according to the related art in Comparative Example 2.

(Industrial applicability)
According to the results of Experimental Example 2 to Experimental Example 4 described above, the heat transfer sealing composite laminate member of the solar cell module according to the implementation example 4 to example 6, improves the heat dissipation effect of the heat photoelectric conversion element emits In addition to lowering the operating temperature of the solar cell module, it is possible to further improve the photoelectric conversion efficiency of the solar cell module and obtain a higher power generation output.

DESCRIPTION OF SYMBOLS 1 Solar cell module 10 Heat transfer composite layer 101 Thermoplastic resin 102 Inorganic particle 20 Adhesive resin layer 30 Transparent substrate 40 Sealing resin layer 50 Photoelectric conversion element 60 Back sheet 70 Metal frame 80 Heat transfer sealing member 90 Additional heat transfer composite layer 91 Heat Transfer Stretching Section 92 Heat Transfer Stretching Section 93 Heat Transfer Body

Claims (11)

A heat transfer sealing composite laminate member,
It thermal conductivity is not 0.5 W / mK and a heat transfer composite layer is 8W / mK, a thermoplastic resin, while being dispersed in the thermoplastic resin, to have no 40 volume percent content in the heat transfer composite layer a heat transfer composite layer and a 70 volume percent der Ru-free machine particles,
An adhesive resin layer provided on the heat transfer composite layer and having a thermal conductivity of 0.05 W / mK to 0.4 W / mK;
The thickness of the adhesive resin layer occupies 0.1% to 10% of the thickness of the heat transfer sealing composite laminated member, and the total thermal resistance value is 0.01 ° C.-in ² / W to 0.00. The heat-transfer sealing composite laminated member characterized by being 72 ° C-in ² / W.   The heat transfer sealing composite laminated member according to claim 1, wherein the heat conductivity of the thermoplastic resin in the heat transfer composite layer is 0.05 W / mK to 0.4 W / mK. Median particle diameter of 20 nm or less, the inorganic particles before cinchona machine particles, and characterized by having an inorganic oxide, inorganic nitride, and one material selected from the group consisting of combinations thereof The heat-transfer sealing composite laminated member according to claim 1. Before median particle size of quinic machine particles is 20 nm or less, the heat transfer sealing composite laminate member according to claim 1, characterized in that inorganic particles have a silicon carbide. A 3 nm to median particle diameter from 1 nm before cinchona machine particles have inorganic particles, aluminum oxide, aluminum nitride, boron nitride, and one material selected from the group consisting of combinations thereof The heat-transfer sealing composite laminated member according to claim 3. The heat transfer sealing according to any one of claims 1 to 5, wherein the sum of the thickness of the heat transfer composite layer and the thickness of the adhesive resin layer is 20 micrometers to 600 micrometers. Composite laminated member. A transparent substrate;
A sealing resin layer provided on the transparent substrate;
A photoelectric conversion element provided in the sealing resin layer;
It is a heat-transfer sealing composite laminated member as described in any one of Claims 1 thru | or 6, Comprising: While being provided in the said sealing resin layer and a photoelectric conversion element, adhesion | attachment of the said heat-transfer sealing composite laminated member A heat transfer sealing composite laminated member in which a resin layer is in contact with the sealing resin layer; and
And a back sheet provided on the heat transfer composite layer of the heat transfer sealing composite laminate member. It is formed into the heat transfer heat sealed composite laminate member and the peripheral edge of the back sheet, have a additional heat transfer composite layer in contact with the photoelectric conversion element,
The additional heat transfer composite layer comprises a thermoplastic resin and inorganic particles dispersed in the thermoplastic resin,
The inorganic particle content in the additional heat transfer composite layer is 40 volume percent to 70 volume percent;
The solar cell module according to claim 7 the thermal conductivity of the additional heat transfer composite layer, to no 0.5 W / mK, wherein 8W / mK der Rukoto. A heat transfer sealing member;
The metal frame attached to the periphery of the transparent substrate, the sealing resin layer, the heat transfer sealing composite laminate member, and the back sheet via the heat transfer sealing member. Solar cell module. An additional heat transfer composite layer formed between the heat transfer sealing composite laminated member and the heat transfer sealing member and between the back sheet and the heat transfer sealing member and contacting the photoelectric conversion element. Yes, and
The additional heat transfer composite layer comprises a thermoplastic resin and inorganic particles dispersed in the thermoplastic resin,
The inorganic particle content in the additional heat transfer composite layer is 40 volume percent to 70 volume percent;
The solar cell module according to claim 9 the thermal conductivity of the additional heat transfer composite layer, to no 0.5 W / mK, wherein 8W / mK der Rukoto. The solar cell module according to claim 9, wherein the heat conductivity of the heat transfer sealing member is 0.05 W / mK to 0.4 W / mK.

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