Building Integrated Solar Power Generation System with Fire Resistant Structure and Improved Power Generation Efficiency

Abstract

A building-integrated photovoltaic power generation system having a fire-resistant structure and improved power generation efficiency is disclosed. According to one aspect of the present embodiment, a building-integrated photovoltaic power generation system is provided, characterized by comprising: a solar panel that receives incident sunlight and produces electrical energy and includes a cooling pipe in the opposite direction to the direction of incident light; a fireproof panel mounted on the exterior wall of a building to minimize the transfer of heat generated from the building to the solar panel and to allow the solar panel to be mounted; and a coupling means for coupling the solar panel to the fireproof panel.

Description

Technology Field

[0001] This embodiment relates to a building-integrated photovoltaic power generation system having a fire-resistant structure and improved power generation efficiency. Background Technology

[0002] The content described in this section merely provides background information regarding the present embodiment and does not constitute prior art.

[0003] There is a global demand for alternative energy sources following the depletion of fossil fuels such as oil and coal, as well as for environmentally friendly energy solutions to address the pollution caused by fossil fuels. Consequently, active technological development for various types of eco-friendly energy has been underway in recent years.

[0004] Among various types of eco-friendly energy, the development of technologies utilizing solar energy is actively underway. In particular, Building Integrated Photovoltaic (BIPV) systems, which utilize building walls as locations satisfying favorable solar irradiance conditions to stably produce electricity, have recently been gaining attention.

[0005] A building-integrated photovoltaic system converts solar energy into electrical energy by installing solar cells on the walls of a building, and simultaneously converts solar energy into thermal energy, such as hot water, by connecting pipes through which a heat transfer medium flows internally with the solar cells.

[0006] Meanwhile, fire-resistant panels are installed in buildings to enhance fire resistance performance, enabling the structure to withstand fire for a certain period of time so that the building is not damaged by the heat of the fire and damage is not exacerbated when a fire occurs. Fire-resistant panels typically have a sandwich structure in which a core material is positioned between two thin metal skins bent into a predetermined shape, and the core material is made of a fire-resistant material such as glass wool or polyurethane foam.

[0007] When a conventional Building-Integrated Photovoltaic (BIPV) system is installed in a building equipped with fire-resistant panels, the following problems may arise. The power generation efficiency of a BIPV system is closely linked to the system temperature. To ensure excellent power generation efficiency, the BIPV system must be properly cooled. However, when fire-resistant panels are installed in a building, the cooling and heat dissipation efficiency of the BIPV system drops significantly (compared to when the panels are not installed) due to the superior thermal insulation properties of the panels. Consequently, conventional BIPV systems installed in buildings equipped with fire-resistant panels have suffered from relatively significantly lower power generation efficiency. The problem to be solved

[0008] One objective of the present invention is to provide a building-integrated photovoltaic power generation system capable of having excellent power generation efficiency even when mounted on a building having a fire-resistant structure. means of solving the problem

[0009] According to one aspect of the present embodiment, a building-integrated photovoltaic power generation system is provided, characterized by comprising: a solar panel that receives incident sunlight and produces electrical energy and includes a cooling pipe in the opposite direction to the direction of incident light; a fireproof panel mounted on the exterior wall of a building to minimize the transfer of heat generated from the building to the solar panel and to allow the solar panel to be mounted; and a coupling means for coupling the solar panel to the fireproof panel.

[0010] According to one aspect of the present embodiment, the fireproof panel comprises: a first support frame that is coupled to the end portion of the solar panel to fix the solar panel and seal the space between the solar panel and the outer wall of the building; a second support frame that is coupled to the outer wall of the building; a heat-blocking frame that is coupled to the first support frame and the second support frame to fix the first support frame and block heat transfer from one side to the other; and a heat-blocking member that is coupled to each frame and disposed in the space formed between the solar panel and the outer wall of the building to minimize heat transfer from one side to the other.

[0011] According to one aspect of the present embodiment, the heat-blocking frame is characterized by being implemented with a preset component.

[0012] According to one aspect of the present embodiment, the preset component is characterized in that its heat resistance temperature is higher than a preset temperature and its thermal conductivity is lower than a preset reference value.

[0013] According to one aspect of the present embodiment, the previously set component is characterized as being polyamide.

[0014] According to one aspect of the present embodiment, the heat insulation member is characterized in that the space where the cooling pipe is located is arranged in a manner that surrounds the cooling pipe.

[0015] According to one aspect of the present embodiment, the heat blocking member is characterized by being implemented with glass fiber. Effects of the invention

[0016] As explained above, according to one aspect of the present embodiment, there is an advantage of having excellent power generation efficiency even when installed in a building having a fire-resistant structure. Brief explanation of the drawing

[0017] FIGS. 1a and 1b are drawings illustrating the configuration of a building-integrated power generation system according to one embodiment of the present invention. FIG. 2a is an exploded perspective view of a solar panel according to a first embodiment of the present invention. FIG. 2b is a cross-sectional view of a solar panel according to a first embodiment of the present invention. FIG. 3a is an exploded perspective view of a solar panel according to a second embodiment of the present invention. FIG. 3b is a cross-sectional view of a solar panel according to a second embodiment of the present invention. FIG. 3c is a bottom view of a solar panel according to one embodiment of the present invention. FIG. 4 is a drawing illustrating the configuration of a fire-resistant panel according to one embodiment of the present invention. FIG. 5 is a flowchart illustrating a method for manufacturing a heat dissipation paint according to one embodiment of the present invention. FIG. 6 is a drawing illustrating an example of a solar panel coated with a heat dissipation paint manufactured according to an embodiment of the present invention. FIGS. 7 to 10 are graphs showing the light absorption spherules of each raw material constituting a heat dissipation paint according to one embodiment of the present invention. Figures 11 and 12 are graphs illustrating the heat dissipation characteristics of a conventional solar panel and a solar panel according to an embodiment of the present invention. Specific details for implementing the invention

[0018] The present invention is susceptible to various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each drawing.

[0019] Terms such as first, second, A, B, etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0020] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0021] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" should be understood as not precluding the existence or addition of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification.

[0022] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this invention pertains.

[0023] Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0024] In addition, each component, process, procedure, or method included in each embodiment of the present invention may be shared within a scope that is not technically contradictory to one another.

[0025] FIG. 1a is a drawing illustrating the configuration of a building-integrated power generation system according to one embodiment of the present invention.

[0026] Referring to FIG. 1a, a building-integrated power generation system (100) according to one embodiment of the present invention includes a solar panel (110), a fire-resistant panel (120), and coupling means (130 to 150). Furthermore, the building-integrated power generation system (100) may further include a heat-dissipating paint (not shown).

[0027] A solar panel (110) is a power generation component that receives sunlight and produces electrical energy. The solar panel (110) can be installed on the exterior wall of a building to form a Building Integrated Photovoltaic (BIPV) system. The solar panel (110) does not occupy a separate space but is placed on the building's exterior wall material, roof material, window material, etc., thereby improving space utilization.

[0028] Since the solar panel (110) is positioned so as to be exposed to the outside of the building, each component within the solar panel (110) has significant strength to withstand external forces. For example, a situation may arise where personnel, such as firefighters, must directly enter the building from the outside, such as when a fire occurs in a building where the solar panel (110) is implemented as a building-integrated photovoltaic system. However, because the solar panel (110) implemented as a building-integrated photovoltaic system has significant strength, personnel attempting to enter may have difficulty entering the building. Furthermore, if a fire occurs in the building and a portion of the solar panel (110) implemented as a building-integrated photovoltaic system melts, it may cause significant difficulty for the aforementioned personnel to enter the building.

[0029] To resolve this problem, the solar panel (110) may include a through hole (114). With the through hole (114) formed, the solar panel (110) and the fireproof panel (120) can be easily attached and detached from the insulating sandwich panel (170) by means of a coupling means (130 to 150). When personnel need to enter the building from the outside, the personnel can enter after easily detaching the solar panel (110) attached to the fireproof panel or the outer wall of the building by releasing the coupling means (130 to 150). Accordingly, personnel can enter the building easily without damaging the solar panel (110).

[0030] A fire-resistant panel (120) is mounted on an insulating sandwich panel (170) to minimize the transfer of heat generated in the building to the solar panel (110) (during normal times or in emergencies such as fire), and to allow the solar panel (110) to be mounted. The fire-resistant panel (120) can withstand temperatures above the temperature at which at least some components of the solar panel (110) would be damaged by heat (e.g., around 160°C) without any issues, and minimizes heat transfer from one end to the other. Even if significant heat is generated from the building due to a fire, the fire-resistant panel (120) can minimize heat transfer to the solar panel (110) for at least a certain period of time (tens to hundreds of minutes). Accordingly, the fire-resistant panel (120) minimizes damage to the solar panel (110) caused by heat. The fireproof panel (120) can minimize the damage to the solar panel (110) caused by heat and the obstruction of personnel entering the building to suppress the fire.

[0031] Meanwhile, the fireproof panel (120) seals the gaps that may be formed at each end of the solar panel (110) to prevent external fluid from flowing into the gaps of the solar panel (110).

[0032] As described above, a through hole (114) is formed within the solar panel (110). A coupling means (130 and 140) is coupled to the fireproof panel (120) through the formed through hole (114).

[0033] The second coupling means (140) is located on the fireproof panel (120), and the third coupling means (150) is coupled to the fireproof panel (120) on a part of the body of the second coupling means (140) and fixes the second coupling means (140). With the second coupling means (140) fixed in this way, the first coupling means (130) passing through the through hole (114) is coupled, thereby connecting the solar panel (110) and the fireproof panel (120). Here, the first coupling means (130) can be implemented as a bolt, the second coupling means (140) as a nut, and the third coupling means (250) as a screw or piece, but is not necessarily limited thereto, and any of the components that allow each coupling means to be coupled with the aforementioned object may be replaced.

[0034] A heat-dissipating paint (not shown) can be applied to components within a solar panel (110) or to components within a building-integrated power generation system (100) that require heat dissipation. The heat-dissipating paint (not shown) significantly improves the heat dissipation characteristics of the applied components. The heat-dissipating paint (not shown) is applied to the components to improve heat dissipation characteristics, while having excellent insulation and weather resistance, and also has the characteristics of easy color change and improved dispersibility. By the heat-dissipating paint (not shown), the heat dissipation efficiency of the solar cell (230) is significantly improved, and the power generation efficiency of the solar cell (230) can be improved. The heat-dissipating paint applied in this manner is manufactured according to the process illustrated in FIG. 5a or 5b. The manufacturing process of the heat-dissipating paint will be described later with reference to FIG. 5a or 5b.

[0035] FIG. 1b is a drawing illustrating the configuration of a building-integrated power generation system according to another embodiment of the present invention.

[0036] Referring to FIG. 1b, a building-integrated power generation system (100) according to another embodiment of the present invention may additionally include a cooling pipe (180) in addition to the configuration of the building-integrated power generation system (100) shown in FIG. 1a.

[0037] A cooling pipe (180) is positioned on the rear side of the solar panel (110) (opposite to the direction in which light enters the solar panel). In a building-integrated photovoltaic power generation system including the solar panel (110), if the components other than the panel are exposed to the external environment, problems such as corrosion may occur. To prevent this, the space between the solar panel (110) and the outer wall of the building is sealed to prevent external fluid from entering. However, as sealing is performed in this manner, the temperature inside the sealed space rises significantly. This rise in temperature causes a decrease in the power generation efficiency of the solar panel (110).

[0038] To prevent this, the building-integrated power generation system (100) may additionally include a cooling pipe (180). The cooling pipe (180) allows cooling water to flow inside, thereby cooling the heat emitted from the solar panel (110) or generated from the solar panel (110) and transferred to itself. A fireproof panel (120) is arranged to surround the cooling pipe (180). The fireproof panel (120) allows the cooling water flowing along the cooling pipe (180) to absorb as much heat generated from the solar panel (110) as possible. If the fireproof panel (120) is not present, the cooling water absorbs not only the heat generated from the solar panel but also heat conducted from the outside and heat transferred from the insulating sandwich panel (170), etc., so the efficiency of cooling the solar panel (110) is inevitably relatively lower. On the other hand, if the fireproof panel (120) is present, the cooling water can intensively absorb the heat generated from the solar panel, thereby improving the cooling efficiency of the solar panel (110).

[0039] FIG. 2a is an exploded perspective view of a solar panel according to a first embodiment of the present invention, and FIG. 2b is a cross-sectional view of a solar panel according to a first embodiment of the present invention.

[0040] Referring to FIGS. 2a and 2b, a solar panel (110) according to a first embodiment of the present invention comprises a glass (210), an upper sealing layer (220), a solar cell (230), a lower sealing layer (240), a back sheet (250), a junction box (260), a frame (270), and a heat sink (280).

[0041] The glass (210) is positioned at the top in the direction in which sunlight is incident on the solar panel (110), protecting the rest of the solar panel (110), such as the upper sealing layer (220), from the external environment.

[0042] The upper sealing layer (220) and the lower sealing layer (240) protect the easily damaged solar cell (230) from external impact and bond the layers together. The upper sealing layer (220) and the lower sealing layer (240) place the solar cell (230) between them to protect the solar cell (230) from external forces. Additionally, the upper sealing layer (220) and the lower sealing layer (240) are arranged, and each layer within the solar panel (110) can be bonded. Accordingly, heat generated from the solar cell (230) can be released more smoothly to the outside by passing through the cooling pipe (180) or the back sheet (250).

[0043] The solar cell (230) receives sunlight and produces electrical energy. The solar cell (230) may be implemented with any structure or any component as long as it can receive sunlight and produce electrical energy. For example, the solar cell (230) may include a plurality of solar cell modules arranged in a string form, or may include solar cell modules implemented in a rod form. Additionally, the solar cell (230) may include solar cell modules implemented with group III-V components (e.g., GaAs or InP, etc.), or may include solar cell modules implemented with other components.

[0044] The back sheet (250) is positioned on the rear side of the lower sealing layer (240) in the direction in which sunlight is incident on the solar panel, thereby protecting the solar cell (230) from the external environment and reflecting sunlight that has passed through the solar cell (230) back to the solar cell (230). The back sheet (250) is positioned on the rear side of the lower sealing layer (240) to prevent the components (220 to 240) located between the glass (210) or frame (270) and itself from being exposed to the outside, and reflecting sunlight that has passed through the solar cell (230) back to the solar cell (230).

[0045] In addition, the back sheet (250) may be implemented with a heat dissipation sheet such as a zinc steel sheet, an aluminum steel sheet, or a stainless steel sheet, or may additionally include a heat dissipation sheet (not shown). The back sheet (250) performs the aforementioned operation (prevention of exposure and re-reflection of sunlight) and, by being implemented with or including the aforementioned heat dissipation sheet, more smoothly discharges the heat generated from the solar cell (230) to the outside.

[0046] The junction box (260) is positioned on the rear of the back sheet (250) in the direction in which sunlight is incident on the solar panel, and manages the electrical wiring between the solar cell (230) and an external device (such as a battery storage device).

[0047] The frame (270) supports each component within the solar panel (110).

[0048] When a cooling pipe (180) is included in a building-integrated power generation system (100), the cooling pipe (180) is positioned on the rear side of the back sheet (250) in a direction in which sunlight is incident on the solar panel. The cooling pipe (180) is positioned on the rear side of the back sheet (250) by means of an adhesive or tape.

[0049] FIG. 3a is an exploded perspective view of a solar panel according to a second embodiment of the present invention, FIG. 3b is a cross-sectional view of a solar panel according to a second embodiment of the present invention, and FIG. 3c is a bottom view of a solar panel according to an embodiment of the present invention.

[0050] Referring to FIG. 3, the solar panel (110) according to the second embodiment of the present invention additionally includes a through hole (114) in addition to the solar panel (110) according to the first embodiment of the present invention.

[0051] Through holes (114) are implemented at corresponding positions in the glass (210) to the back sheet (250). The through holes (114) are implemented in a predetermined number of pre-set sizes within each component (210 to 250). Here, the pre-set size may have a diameter of approximately 10 mm to 15 mm, and several or more through holes of that size may be implemented in each component (210 to 250).

[0052] In order for a through hole (114) to be formed in the solar cell (130) as well, the solar cell (130) within the solar panel (110) according to the second embodiment of the present invention is implemented to have a shingled array structure. To increase the conversion efficiency and output per unit of the solar cell module, the shingled array structure is formed by cutting a solar cell with a front electrode and a rear electrode to form a plurality of strips. The shingled array structure is formed as a string structure in which the front electrode and the rear electrode are bonded and connected with a conductive adhesive. By having this structure, the solar panel (110) can have a power generation efficiency that is 20% higher than that of a conventional ribbon-type cell, and there is no problem with current flow even if a hole is made in the solar panel.

[0053] Since the through holes (114) are formed at corresponding positions within each component (210 to 250), they can be easily formed in a form that is perforated by means such as a laser or a drill. As described above, since the solar cell (230) has a shingled array structure, it is not affected by perforation. As the through holes (114) are formed inside each component (210 to 250) in this way, a coupling means (130 and 140) or a cooling means (not shown) can be fastened through the through holes. Accordingly, the solar panel (110) can be fixed to the outer wall of a building, etc. by the coupling means (130 and 140). Since the solar panel (110) is fixed to the outer wall of a building, etc. by the coupling means (130 and 140) while passing through the through holes (114), the solar panel (110) fixed to the outer wall of a building, etc. can be easily separated from it by separating the coupling means (130 and 140). With the formation of the through hole (114), not only is the assembly (or arrangement) of each component within the solar panel (110) made easier, but detachment from the outer wall of a building can also be easily performed.

[0054] Meanwhile, since a through hole (114) is formed in each component (210 to 250), the heat sink (280) can be attached to the rear surface of the back sheet (250) by an adhesive material and placed thereon, but it can also be placed on the rear surface of the back sheet (250) by means of a coupling means (130 and 140) that is fastened to the through hole (114). The heat sink (280) may also have a through hole (114) in an area other than the area where the cooling tube (180) is placed. The coupling means (130 and 140) can penetrate to the heat sink (280) and place the heat sink (280) at the aforementioned location.

[0055] Meanwhile, the cooling pipe (180) is positioned on the rear surface of the back sheet (250) as shown in FIG. 3c. The cooling pipe (180) is positioned on the rear surface of the back sheet (250) by means of an adhesive or bonding means, and may be positioned at predetermined intervals. Here, the predetermined intervals may be determined by considering various factors such as the area of ​​the solar panel (110) or the back sheet (250), the cooling efficiency to be secured, and the diameter of the cooling pipe (180). Unlike conventional methods where the cooling pipe is manufactured and positioned as a single unit, the cooling pipe (180) is formed into parts and positioned on the rear surface of the back sheet (250), and a cooling hose (195) connects each cooling pipe (180).

[0056] Depending on the location where the building-integrated power generation system (100) is implemented and the state of the building-integrated power generation system (100), the number, spacing, or length of the cooling pipes (180) can be actively adjusted and arranged.

[0057] FIG. 4 is a drawing illustrating the configuration of a fire-resistant panel according to one embodiment of the present invention.

[0058] Referring to FIG. 4, a fireproof panel (120) according to one embodiment of the present invention includes a first support frame (410), a heat-blocking frame (420), a second support frame (430), and a heat-blocking section (440).

[0059] The first support frame (410) is combined with the solar panel (110) and the heat blocking frame (420), respectively, to support the solar panel (110). The first support frame (410) is implemented with a shape complementary to the end of the heat blocking frame (420) at the end facing the heat blocking frame (420) for combination with the heat blocking frame (420). Accordingly, the first support frame (410) can be combined with the heat blocking frame (420) and fixed in place.

[0060] Meanwhile, the first support frame (410) includes a connecting part (415) that connects to the end portion of the solar panel (110), thereby fixing the solar panel (110) and sealing the space between the solar panel (110) and the outer wall of the building. The first support frame (410) connects with the solar panel (110) to fix the solar panel (110) and prevents the inflow of fluid from the outside.

[0061] The heat-blocking frame (420) is combined with the first support frame (410) and the second support frame (430) to fix the first support frame (410) and block heat transfer from one side to the other. The heat-blocking frame (420) is implemented at each end facing the first support frame (410) and the second support frame (430) in a shape complementary to each frame (410, 430) and is combined with both. Accordingly, it is combined with and fixed to the second support frame (430) and can fix the first support frame (410).

[0062] Meanwhile, as described above, in order to minimize heat transfer from one side to the other (mainly from the building to the solar panel), the heat-blocking frame (420) can be implemented with a pre-set component having excellent heat resistance and low thermal conductivity. Here, the pre-set component may be polyamide. Polyamide can withstand heat up to a temperature (around 300°C) that significantly exceeds the temperature at which some components within the solar panel (110) would be damaged by heat, and has a significantly low thermal conductivity of around 0.3 W / m·K. Accordingly, the heat-blocking frame (420) can minimize the transfer of heat from the second support frame (430) to the first support frame (410).

[0063] The second support frame (430) is combined with the thermal insulation frame (420) and the building exterior wall (160), respectively, to fix the thermal insulation frame (420).

[0064] Meanwhile, since the second support frame (430) faces the building's outer wall (160) in direct contact, a fire-resistant paint may be additionally applied to withstand the heat transmitted from the building so as not to be damaged.

[0065] As illustrated in FIG. 4, each frame (410 to 430) is positioned at both ends of the solar panel (110) to support and seal the solar panel (110). As a result, a space is formed between the solar panel (110) and the building's outer wall, and a thermal insulation member (440) is positioned in that space. As previously described, the thermal insulation member (440) is positioned in a manner that surrounds the cooling pipe (180) in the space where the cooling pipe (180) is located, and is positioned in all other spaces. The thermal insulation member (440) is implemented with a component having a thermal conductivity below a predetermined standard value, such as glass fiber, thereby minimizing heat transfer from one side to the other. The thermal insulation member (440) allows the fireproof panel (120), like the thermal insulation frame (420), to perform its role, while simultaneously maximizing the cooling efficiency of the solar panel (110) of the cooling pipe (180).

[0066] Meanwhile, the aforementioned heat dissipation powder is manufactured as follows according to the process shown in FIG. 5a.

[0067] FIG. 5a is a flowchart illustrating a method for manufacturing a heat dissipation paint according to one embodiment of the present invention, and FIG. 6 is a drawing illustrating an example of a solar panel coated with a heat dissipation paint manufactured according to one embodiment of the present invention.

[0068] Referring to FIG. 6, a heat dissipation paint (600) manufactured according to one embodiment of the present invention comprises a heat dissipation powder (610) and a pigment (not shown), and the heat dissipation powder (610) comprises a resin (612), a first filler (614), a second filler (616) and a third filler (618).

[0069] The raw materials are mixed in a predetermined ratio (S510). As raw materials, the resin, curing agent, first to third fillers, additives, and coupling agent are included.

[0070] The resin (612) has heat dissipation properties and allows the remaining components of the raw material to be melted and dispersed within itself. The resin is a thermosetting resin, and more specifically, can be implemented as a polyester. The polyester has excellent weather resistance, color development, and gloss (above a preset standard value). In particular, the resin is a thermosetting polyester and can be implemented as a carboxylic acid functional polyester resin or a hydroxyl functional polyester resin.

[0071] The curing agent enables the resin to be cured according to the process described below. An HAA (β-hydroxyalkylamide) type curing agent may be used as the curing agent. Conventionally, TGIC (Triglycidyl Isocyanurate) type curing agents have been mainly used to cure polyester resins. However, this type of curing agent has properties harmful to the human body, and its use is banned in various countries. To resolve this problem, an HAA type curing agent may be used as the curing agent.

[0072] The first filler (614) is included as a component to increase the thermal emissivity of the heat dissipation powder (610). The first filler (614) must have excellent thermal conductivity while possessing insulating properties, and accordingly, it can be implemented as boron nitride (BN). In particular, the first filler (614) can be implemented as boron nitride having a hexagonal structure, which is the most stable crystalline form of boron nitride. Hexagonal boron nitride is a form in which carbon atoms constituting graphene are substituted with boron and nitrogen atoms, and while its structure has characteristics similar to graphene, it possesses excellent insulating properties unlike graphene.

[0073] However, since the first filler (614) has a hexagonal structure, it has the following characteristics. The first filler (614) has an excellent thermal conductivity of approximately 400 W / m·K in the area direction, while it has a poor thermal conductivity of approximately 2 W / m·K in the vertical direction of the area. If only the first filler (614) is included in the resin (612), it is obvious that most of it will be arranged in a stacked form in the area direction. Accordingly, a problem arises in which the first fillers (614) are arranged in the vertical direction of the area in the direction in which the heat dissipation powder (610) releases heat, resulting in poor thermal conductivity.

[0074] To resolve this, a second filler (616) and a third filler (618) are additionally included as raw materials.

[0075] The second filler (616) is implemented in a spherical structure using a pre-set first material. Here, the pre-set first material is a material that is relatively cheaper than the first filler (614) and has a thermal conductivity greater than or equal to a pre-set standard value, and can be implemented as magnesium oxide (MgO) as a representative example. The second filler (616) has a thermal conductivity of approximately 60 W / m·K, which is lower than that of the first filler (614) but higher than that of the third filler (618). Since the second filler (214) has a higher thermal conductivity than the third filler (618), it is implemented in a spherical structure having a relatively larger diameter than the third filler (618). As the second filler (616) is included, the second filler (616) is placed between the first fillers (614).

[0076] As a result, when heat is released from the backsheet (150) or heatsink (180) within the solar panel (130) to the outside (where heat is released), it can pass through the second pillar (616) and pass through the first pillar (614) relatively less. As previously mentioned, since the first pillars (614) are arranged in the vertical direction of the area, the second pillar (616) can be arranged to have the effect of improving the overall thermal conductivity. Additionally, as the second pillar (616) is implemented in a spherical structure, the first pillar (614) is arranged at an angle with respect to the area direction (the surface direction of the heat dissipation configuration within the light source). The second pillar (616) can be arranged so that the first pillar (614) is arranged vertically, but even if it is not, it can be arranged at least at an angle from the area direction. Accordingly, the thermal conductivity of the first filler (614) can also be significantly better than when the second filler (616) is absent and laminated.

[0077] Meanwhile, the third filler (618) is implemented in a spherical structure using a pre-set second material. Here, the pre-set second material is a material that is relatively cheaper than the first filler (614) and has a thermal conductivity greater than or equal to a pre-set standard value, and can be implemented as, for example, aluminum oxide (Al2O3). The third filler (618) is implemented in a spherical structure having a relatively smaller diameter than the second filler (616). As the third filler (618) is implemented in a relatively small spherical structure, it is placed within the empty space formed by the placement of the first filler (614) and the second filler (616), thereby improving thermal conductivity. If the third filler (618) is implemented with the same components as the second filler (616), it rather has the effect of dispersing heat within the first filler (614) and the second filler (616). As a result, there is a concern that the rate of heat dissipation from the backsheet (150) or heatsink (180) inside the solar panel (130) to the outside (where heat is emitted) may actually be slowed down. Accordingly, the third pillar (618) is implemented with the aforementioned material and structure, thereby thermally connecting the empty spaces formed by the arrangement of the first pillar (614) and the second pillar (616), while preventing excessive heat dispersion into the space, thereby improving heat dissipation.

[0078] In addition, as the resin (612) and the first to third fillers (614, 616, 618) are implemented with the aforementioned components, the following effects may occur. Each component (612, 614, 616, 618) can absorb light of different wavelength bands, as illustrated in FIGS. 7 to 10.

[0079] FIGS. 7 to 10 are graphs showing the light absorption spherules of each raw material constituting a heat dissipation paint according to one embodiment of the present invention.

[0080] Referring to FIG. 7, as the resin (612) is implemented as polyester, the wavelength range of 5.6 to 5.8 μm (1780 to 1720 cm) -1Absorbs wavenumber) or 7.8 to 8.5㎛ wavelength band (1290 to 180, 1900cm -1 Absorbs light of wavenumber.

[0081] Referring to FIG. 8, as the first filler (614) is implemented with boron nitride, the wavelength band of 7.4 μm (1352 cm) -1 Absorbs light of wavenumber.

[0082] Referring to FIG. 9, the second filler (616) is implemented with magnesium oxide. 18.3 µm wavelength band (545 cm -1 Absorbs light of wavenumber.

[0083] Referring to FIG. 10, the third filler (216) is implemented with aluminum oxide. 16.8 µm wavelength band (595 cm -1 Absorbs light of wavenumber.

[0084] If some or all of the components (612, 614, 616, 618) are implemented as the same component, a phenomenon may occur in which one component reabsorbs the heat (light) emitted after absorbing it. If another component reabsorbs the heat emitted by a specific component, a problem arises in which the rate of heat emission becomes relatively slow. To prevent this, each component (612, 614, 616, 618) is implemented with the aforementioned configuration and absorbs light of different wavelength bands. Accordingly, the problem of one component reabsorbing the heat (light) emitted by another component can be prevented.

[0085] Additionally, the second filler (616) and / or the third filler (618) may be surface modified to improve dispersibility within the resin (612) and to improve weather resistance.

[0086] Referring again to Figures 5a and 6, the additive prevents defects from forming on the surface of the coating film.

[0087] The coupling agent improves the dispersibility of each filler (614, 616, 618) within the resin (612). If each filler (614, 616, 618) is not dispersed within the resin (612), the overall heat dissipation efficiency of the heat dissipation powder (610) is reduced. To prevent this, a coupling agent is additionally included. The coupling agent can be implemented as a silane coupling agent or a compound containing an ionic functional group. The coupling agent improves the dispersibility of the fillers within the resin (612) by having one side of the molecule affinity with the surface of the fillers (614, 616, 618) and the other side affinity with the resin.

[0088] A heat dissipation powder is formed by the aforementioned raw materials.

[0089] The pigment ensures that the heat dissipation paint to be manufactured has a preset color. The pigment is mixed together with the heat dissipation powder and determines the color of the heat dissipation paint to be finally manufactured.

[0090] The pigment can be mixed with the remaining raw material constituting the heat dissipation powder (610) in a weight ratio of 88 to 95: 5 to 12. Most preferably, the remaining raw material can be mixed in an amount of 8.6 weight percent relative to the pigment. If the remaining raw material is included in an amount of less than 5 weight percent, a problem arises in which the thermal conductivity of the heat dissipation paint to be manufactured is significantly reduced. Conversely, if the remaining raw material is included in an amount of 12 weight percent or more, the film of the heat dissipation paint to be manufactured becomes uneven, the amount of pigment included decreases, and the aesthetic quality is significantly reduced. Therefore, the pigment and the remaining raw material constituting the heat dissipation powder (610) can be mixed in the aforementioned ratio.

[0091] The mixed raw materials are melted in a preset environment (S520). The raw materials mixed at a preset ratio are melted in a preset environment.

[0092] The molten raw material is extruded and cooled (S530). The molten raw material is extruded and cooled in a preset environment. Accordingly, the molten raw material solidifies.

[0093] The cooled raw materials are crushed or ground into a preset form (S540). The solidified raw materials are crushed into a preset form or ground separately. Through this process, a heat-dissipating paint is manufactured. The manufactured heat-dissipating paint has excellent insulation, heat dissipation, and weather resistance as it contains first to third fillers (614, 616, 618). In addition, it has the advantage of easy color change as it contains first to third fillers (614, 616, 618) and a resin (612) implemented with the aforementioned components. The heat-dissipating paint manufactured in this way is placed on a back sheet (150) or a heat sink (180) inside a solar panel (130), melts due to heat applied from the outside, and is coated on the surface of the object. Accordingly, the heat-dissipating paint is coated on the surface of the object and forms a coating film having excellent heat dissipation, insulation, and weather resistance.

[0094] Meanwhile, the heat dissipation paint can be manufactured as shown in Fig. 5b.

[0095] The raw materials are mixed at a preset ratio (S550). The raw materials are mixed at a preset ratio, excluding the pigment from the raw materials mixed in the S510 process.

[0096] The mixed raw materials undergo processes S520 to S540 and are crushed or ground.

[0097] Crushed or ground heat-dissipating powder and pigment are mixed in a preset ratio (S560). As described above, the pigment and heat-dissipating powder are mixed in a weight ratio of 88 to 95: 5 to 12. Through this process, a heat-dissipating paint is finally manufactured.

[0098] A solar panel (100) coated with a heat-dissipating paint manufactured through the process of FIG. 5a or FIG. 5b has significantly superior heat dissipation characteristics compared to a conventional solar panel that does not have such characteristics. This is illustrated in FIG. 11 and 12.

[0099] FIGS. 11 and 12 are graphs illustrating the heat dissipation characteristics of a conventional solar panel and a solar panel according to an embodiment of the present invention. The graphs shown in FIGS. 11 and 12 illustrate the temperature difference between the cooling water (in the cooling tube) flowing into the solar panel and the cooling water flowing out after cooling the solar panel.

[0100] Figure 11 is a graph illustrating the heat dissipation characteristics of a conventional solar panel. As shown in Figure 11(a) or Figure 11(b), it can be seen that in a conventional solar panel, the temperature difference between the incoming and outgoing cooling water is only a few degrees Celsius. This means that heat dissipation from the solar panel is insufficient, so the temperature of the cooling water does not rise (cooling is insufficient).

[0101] On the other hand, FIG. 12 is a graph illustrating the heat dissipation characteristics of a solar panel according to an embodiment of the present invention. As shown in FIG. 12(a) or FIG. 12(b), it can be seen that the temperature difference of the cooling water in the solar panel (coated with a heat-dissipating paint) according to an embodiment of the present invention differs by tens of degrees. That is, as heat dissipation occurs sufficiently in the solar panel, the temperature of the discharged cooling water rises sufficiently, and it can be seen that the temperature difference between the two cooling waters is significantly greater than in the conventional method.

[0102] From the aforementioned data (graph), the heat dissipation characteristics of the heat dissipation paint manufactured according to one embodiment of the present invention can be confirmed.

[0103] Meanwhile, a heat-dissipating paint according to one embodiment of the present invention can be manufactured in a way different from the method shown in FIG. 5.

[0104] A heat dissipation powder can be manufactured using the same process as illustrated in FIG. 5a or FIG. 5b. However, the heat dissipation powder may contain only the first filler (614) as a raw material and may be manufactured into a heat dissipation powder by undergoing the process of FIG. 5a or FIG. 5b. The heat dissipation powder manufactured in this way is mixed with a pigment (not shown) and manufactured into a heat dissipation paint.

[0105] At this time, the heat dissipation powder is not mixed with the pigment in a lump sum, but is crushed to have different sizes and then mixed. In order to improve thermal conductivity, the heat dissipation powder is crushed to have sizes of approximately 30㎛ (within a preset error range), approximately 12㎛, and approximately 5㎛ in a 1:1:1 ratio. When crushed in this manner, the heat dissipation powder of relatively smaller size acts as a second or third filler, and can produce an effect similar to that described above.

[0106] The heat-dissipating paint manufactured in this manner possesses excellent heat dissipation characteristics as follows. The following table compares the heat dissipation characteristics of a heat-dissipating paint manufactured according to one embodiment of the present invention with those of a conventional heat-dissipating paint. The heat dissipation characteristics of the heat-dissipating paint were measured by the following method. The manufactured powder paint was formed into a disc shape by uniaxial pressure, and the heat dissipation characteristics of the disc-shaped paint were measured using the Laser Flash Method (LFA). The Laser Flash Method is a measurement method that proceeds as follows. The disc-shaped paint is placed on a hot plate and subjected to the same temperature (within a preset error range from 91°C) for a preset time (3 to 4 hours). Subsequently, the surface temperature of the chart and the air temperature (heat dissipation temperature) at a point 15 mm above the surface are measured. At this time, to eliminate abnormal variables in airflow, a cylindrical Teflon structure with an open top was installed on the surface of the sample, and the air temperature inside the structure was analyzed.

[0107]

[0108] It was confirmed that all heat-dissipating paints manufactured according to each embodiment of the present invention have excellent thermal conductivity of 0.5 W / (m*K) or higher. In particular, it was confirmed that the thermal conductivity improves as the content of the first filler increases.

[0109] On the other hand, it was confirmed that paints made only of resin and additives have significantly low thermal conductivity, and when only one of the first to third fillers is included, it was confirmed that they generally do not have a thermal conductivity of 0.35 or higher. It was confirmed that if the first filler is included in a ratio greater than that in the manufacturing method according to one embodiment of the present invention, the thermal conductivity is excellent (Comparative Examples 4 and 5), but since the first filler must be included in a ratio greater than that of a preset amount, a problem arises in that the manufacturing cost increases significantly.

[0110] Although the heat dissipation paint manufactured according to one embodiment of the present invention is described as being applied to a solar panel, it is not necessarily limited thereto. The heat dissipation paint (manufactured according to one embodiment of the present invention) can be applied to a lighting fixture, particularly to a heat sink within the lighting fixture to improve the heat dissipation characteristics of the lighting fixture, and can also be applied to various other devices requiring heat dissipation to improve heat dissipation characteristics.

[0111] Although FIG. 5 describes each process as being executed sequentially, this is merely an illustrative explanation of the technical concept of one embodiment of the present invention. In other words, a person skilled in the art to which one embodiment of the present invention belongs can modify and adapt it in various ways, such as changing the order described in each figure or executing one or more of the processes in parallel, without departing from the essential characteristics of one embodiment of the present invention; therefore, FIG. 5 is not limited to a chronological order.

[0112] Meanwhile, the processes illustrated in FIG. 5 can be implemented as computer-readable code on a computer-readable recording medium. A computer-readable recording medium includes all types of recording devices in which data that can be read by a computer system is stored. That is, a computer-readable recording medium includes storage media such as magnetic storage media (e.g., ROM, floppy disk, hard disk, etc.) and optical reading media (e.g., CD-ROM, DVD, etc.). In addition, computer-readable recording media can be distributed across networked computer systems, allowing computer-readable code to be stored and executed in a distributed manner.

[0113] The above description is merely an illustrative explanation of the technical concept of the present embodiment, and a person skilled in the art to which the present embodiment belongs would be able to make various modifications and variations within the scope of the essential characteristics of the present embodiment. Accordingly, the present embodiments are intended to explain, not limit, the technical concept of the present embodiment, and the scope of the technical concept of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present embodiment. Explanation of the symbols

[0114] 100: Building-integrated power generation system 110: Solar panel 114: Penetrating hole 180: Cooling tube 120: Fireproof panel 130 to 150: Combination means 210: Glass 220: Upper sealing layer 230: Solar cell 240: Lower sealing layer 250: Backsheet 260: Junction box 270: Frame 280: Heatsink 600: Heat dissipation paint 610: Heat dissipation powder 612: Suji 614: 1st Filler 616: 2nd Filler 618: 3rd Filler

Claims

Claim 1 A solar panel that receives incident sunlight to produce electrical energy and includes a cooling pipe in the opposite direction to the direction of incident light; a fireproof panel mounted on an insulating panel to minimize the transfer of heat generated in a building to the solar panel, to allow the solar panel to be mounted, and to seal gaps that may be formed at each end of the solar panel to prevent external fluid from entering through the gaps of the solar panel; and a coupling means for coupling the solar panel to the fireproof panel, wherein the fireproof panel comprises: a first support frame coupled to the end portion of the solar panel to fix the solar panel and seal the space between the solar panel and the outer wall of the building; a second support frame coupled to the outer wall of the building; and a heat-blocking frame coupled to the first support frame and the second support frame to fix the first support frame and block heat transfer from one side to the other. A building-integrated photovoltaic power generation system characterized by including a heat-blocking member in which the solar panel is combined with each frame and disposed in the space formed between the solar panel and the building exterior wall, wherein the cooling pipe is disposed in a manner that surrounds the cooling pipe in the space where the cooling pipe is located, and disposed in all other spaces to minimize heat transfer from one side to the other. Claim 2 delete Claim 3 A building-integrated photovoltaic power generation system according to claim 1, wherein the heat-blocking frame is implemented with a preset component. Claim 4 A building-integrated photovoltaic power generation system according to paragraph 3, wherein the above-mentioned preset component has a heat resistance temperature above a preset temperature and a thermal conductivity below a preset standard value. Claim 5 A building-integrated photovoltaic power generation system characterized in that, in paragraph 4, the above-mentioned pre-set component is polyamide. Claim 6 delete Claim 7 A building-integrated photovoltaic power generation system according to claim 1, wherein the heat blocking member is implemented with glass fiber.

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