KR102532309B1 - Building-integrated Photovoltaic Power Generation Device with Improved Power Generation Efficiency, Constructability and Durability Using Zero Frame - Google Patents

Abstract

The present invention relates to a building-integrated solar power generation device with increased power generation efficiency, constructability, and durability by using a zero frame and, more specifically, to a building-integrated solar power generation device with increased power generation efficiency, constructability, and durability by using a zero frame in which the solar power generation device includes a solar module and a zero frame, the zero frame has a small portion exposed to the outside and does not block the solar module, thereby increasing power generation efficiency, constructability is increased by including protruding wing portions to which a bolt can be coupled, and durability including an arch-shaped arch fixing part is increased.

Description

Building-integrated Photovoltaic Power Generation Device with Improved Power Generation Efficiency, Constructability and Durability Using Zero Frame }

The present invention relates to a building-integrated photovoltaic device with improved power generation efficiency, constructability and durability using a zero frame, and more particularly, the photovoltaic device includes a photovoltaic module and a zero frame, wherein the zero frame , There is no part exposed to the outside, so there is no part to cover the solar module, so power generation efficiency is increased, workability is improved by including a protruding wing that can be fastened with bolts, and durability is improved by including an arch-shaped arch fixing part, It relates to a building-integrated photovoltaic power generation device with improved power generation efficiency, constructability and durability using a zero frame.

Photovoltaic modules have been installed on the rooftops or roofs of buildings, but recently they have been installed on the outer walls of houses and buildings and are integrated with houses and buildings to conduct photoelectric conversion in a large area of the outer walls of buildings. is being actively pursued.

Among conventional building-integrated photovoltaic modules, a large portion of the frame in the G to B type is structurally exposed to the outside in order to support the photovoltaic module. Due to this, a shadow is formed by a part of the photovoltaic module that is exposed to the outside or obstructs the aesthetic appearance, and a problem of lowering power generation efficiency occurs. In addition, the conventional G to B type frame is heavy and cannot be constructed using a dry method, so it is difficult to install it on a large area on the outer wall of a building.

Accordingly, the frame supporting the building-integrated solar module is minimally exposed to the outside and can be fastened to the construction surface with bolts, etc. this is a necessary situation.

The present invention relates to a building-integrated photovoltaic device with improved power generation efficiency, constructability and durability using a zero frame, and more particularly, the photovoltaic device includes a photovoltaic module and a zero frame, wherein the zero frame , There is no part exposed to the outside, so there is no part to cover the solar module, so power generation efficiency is increased, workability is improved by including a protruding wing that can be fastened with bolts, and durability is improved by including an arch-shaped arch fixing part, It relates to a building-integrated photovoltaic power generation device with improved power generation efficiency, constructability and durability using a zero frame.

In order to solve the above problems, the present invention is a building-integrated photovoltaic power generation device with improved power generation efficiency, workability and durability, comprising: a plurality of photovoltaic modules; and a plurality of zero frames supporting the photovoltaic module and fastened to an outer wall of a building, wherein the photovoltaic module includes: a front glass; A first filler layer including EVA or PVB and disposed on the lower side of the windshield; A second filler layer comprising EVA or PVB and disposed below the first filler layer; a back sheet disposed below the second filler layer; and one or more photovoltaic cells that are fixedly disposed between the first filler layer and the second filler layer, and have electrodes positioned on the rear surface so that electrodes and ribbons for soldering the electrodes are not exposed to the outside. Including, the zero frame, the lower plate fastened to the construction surface of the outer wall of the building; A rectangular frame portion extending from one end of the lower plate; and an arch portion extending from one end of a side surface of the skeleton portion, formed outside in an arch shape, and distributing stress applied to the opposite side of the photovoltaic module by supporting the photovoltaic module. and a fixing groove formed inside in a form surrounding a portion of the photovoltaic module, and when the photovoltaic module is fixed and viewed from the outside toward the construction surface, only a portion of the arch portion is outside due to the curvature of the arch portion. and an arch fixing portion exposed to, and the two adjacent zero frames are disposed in opposite directions so that each of the arch fixing portions is symmetrical.

In one embodiment of the present invention, one side of the lower plate corresponds to the protruding wing portion, the other side of the lower plate corresponds to the support portion, the thickness of the protruding wing portion is thicker than the thickness of the support portion, and a bolt is attached to the protruding wing portion. By being fastened, the lower plate can be fastened to the construction surface.

In one embodiment of the present invention, the skeleton portion is formed at a predetermined distance from one side of the rim of the lower plate, and may correspond to a hollow shape including a central hole penetrating in the longitudinal direction for lightening the weight of the zero frame.

In one embodiment of the present invention, in the windshield, at least one of the corners of the upper surface of the windshield includes a chamfered surface, and the angle formed by the side surface of the windshield and the chamfered surface is the fixing groove. It can correspond to the angle formed by the top and side of the part

In one embodiment of the present invention, in the two adjacent zero frames, an elliptical reinforcing structure is inserted into a space formed by the lower plate, the skeleton part, and the arch fixing part of each of the adjacent zero frames, The sealant may be injected and installed on the upper side of the reinforcing structure.

In one embodiment of the present invention, the photovoltaic cell includes an antireflection layer; an upper passivation layer disposed below the antireflection layer; a front conductive layer disposed below the upper passivated layer; an n-type substrate disposed below the front conductive layer; a bottom conductive layer including first bottom conductive parts and second bottom conductive parts bonded to each other below the n-type substrate and arranged to cross each other; a lower passivation layer disposed under the lower conductive layer; a first electrode disposed under the bottom conductive layer and connected to the first bottom conductive part; and a second electrode disposed below the bottom conductive layer and connected to the second bottom conductive portion.

According to one embodiment of the present invention, since the arch fixing portion of the zero frame is minimally exposed to the outside, contamination due to foreign substances or the like caused from the outside can be minimized.

According to one embodiment of the present invention, since the arch fixing portion of the zero frame is minimally exposed to the outside, it is possible to achieve an effect of increasing power generation efficiency by forming a minimum shadow without covering the photovoltaic cells.

According to one embodiment of the present invention, since the arch portion of the arch fixing portion fixing the photovoltaic module is formed in an arch shape, the effect of distributing stress generated in fixing the photovoltaic module without being concentrated. can exert

According to one embodiment of the present invention, since the zero frame includes protruding blades capable of fastening bolts to the construction surface, an effect that can be constructed by a dry method can be exhibited.

According to an embodiment of the present invention, since the zero frame fixes the solar module by the top and side surfaces of the fixing groove forming a certain angle and the windshield of the solar module forming the certain angle, the zero frame is separate with its own frame. It is possible to exhibit the effect of fixing the photovoltaic module without an additional structure.

According to an embodiment of the present invention, the arch fixing part is minimally exposed to the outside, and when constructing a building-integrated photovoltaic module, the zero frame can be finished with a structural sealant, so it can exert an effect of forming a beautiful appearance. can

According to one embodiment of the present invention, the photovoltaic cell of the photovoltaic module is not exposed to the outside because the electrode and the ribbon are located on the back side, so that aesthetic effects can be exhibited.

1 schematically shows a solar module according to an embodiment of the present invention.
2 schematically shows a photovoltaic device according to an embodiment of the present invention.
Figure 3 schematically shows an enlarged view of the arch fixing portion and the photovoltaic module of the zero frame according to an embodiment of the present invention.
4 schematically shows a cross-sectional view of a zero frame construction according to an embodiment of the present invention.
5 schematically shows a photovoltaic cell according to an embodiment of the present invention.

In the following, various embodiments and/or aspects are disclosed with reference now to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings describe in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in principle of the various aspects may be used, and the described descriptions are intended to include all such aspects and their equivalents.

Moreover, various aspects and features will be presented by a system that may include a number of devices, components and/or modules, and the like. It should also be noted that various systems may include additional devices, components and/or modules, and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. It must be understood and recognized.

"Example", "example", "aspect", "exemplary", etc., used herein should not be construed as preferring or advantageous to any aspect or design being described over other aspects or designs. .

In addition, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or”. That is, unless otherwise specified or clear from the context, “X employs A or B” is intended to mean one of the natural inclusive substitutions. That is, X uses A; X uses B; Or, if X uses both A and B, "X uses either A or B" may apply to either of these cases. Also, the term "and/or" as used herein should be understood to refer to and include all possible combinations of one or more of the listed related items.

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements and/or groups thereof. It should be understood that it does not.

In addition, terms including ordinal numbers such as first and second may be used to describe various components, but the components are not limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those of ordinary skill in the art to which the present invention belongs. has the same meaning as Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning not be interpreted as

A conventional frame for fixing the photovoltaic module 1000 usually includes a 'c'-shaped fixing part in order to fix the photovoltaic module 1000. Due to this, the photovoltaic cell 1300 of the photovoltaic module 1000 may be covered, and a shadow may be formed by the fixing part, thereby impairing the efficiency of power generation. In addition, the fixing part may be contaminated due to foreign substances due to a large portion exposed to the outside, and it may damage the appearance of the aesthetics.

In the present invention, in order to solve the above problems, a building-integrated photovoltaic device 1 including a photovoltaic module 1000 and a zero frame 2000 was developed, and the front glass 1100 of the photovoltaic module 1000 A minimum structure was formed by forming surfaces forming a certain angle on the , and forming a curve of a certain angle on the zero frame 2000 . Accordingly, in the present invention, although the zero frame 2000 is minimally exposed to the outside, it is possible to firmly fix the photovoltaic module 1000 and the zero frame 2000 and secure aesthetics.

1 schematically illustrates a solar module 1000 according to an embodiment of the present invention.

As shown in FIG. 1 , according to an embodiment of the present invention, a building-integrated photovoltaic device 1 with improved power generation efficiency, constructability and durability includes a plurality of photovoltaic modules 1000; and a plurality of zero frames 2000 supporting the photovoltaic module 1000 and fastened to an outer wall of a building, wherein the photovoltaic module 1000 includes a front glass 1100; A first filler layer 1200 including EVA or PVB and disposed below the windshield 1100; a second filler layer 1400 including EVA or PVB and disposed below the first filler layer 1200; a back sheet 1500 disposed under the second filler layer 1400; And fixedly disposed between the first filler layer 1200 and the second filler layer 1400, the electrode is located on the back side, so that the electrode and the ribbon for soldering the electrode are not exposed to the outside, 1 More than one photovoltaic cell 1300; may be included.

The photovoltaic module 1000 in the present invention may correspond to the building-integrated photovoltaic module 1000 BIPV (Building Integrated PhotoVoltaics).

Specifically, the solar module 1000 may be formed by stacking a back sheet 1500, a second filler layer 1400, a first filler layer 1200, and a windshield 1100 from below. In the photovoltaic cell 1300 , one or more photovoltaic cells 1300 may be fixedly disposed between the first filler layer 1200 and the second filler layer 1400 .

In another embodiment of the present invention, the photovoltaic cells 1300 may have a structure and number different from those of FIG. 1 depending on the arrangement. That is, the distance between the photovoltaic cells 1300 may be different from that of FIG. 1 .

The first filler layer 1200 and the second filler layer 1400 may include EVA (Ethylene Vinyl Acetate) or PVB (Polyvinyl Butyral), the PVB may include a black PVB film, and BIPV color In application to the module, the effect of realizing the original color of the BIPV color module as it is can be exhibited by the black PVB film.

The windshield 1100 may be thicker than the back sheet 1500, the second filler layer 1400, and the first filler layer 1200, and preferably, chamfers of a certain length and angle may be formed. It may correspond to the thickness of the

In the conventional photovoltaic cell 1300, electrodes and a ribbon for soldering the electrodes are positioned on the top surface of the photovoltaic cell 1300 to form a plurality of lines on the top surface. Due to this, it occupies the power generation area of the photovoltaic cell 1300, and there is an aesthetic limitation because the line is visible externally.

In the photovoltaic cell 1300 of the present invention, the electrode and the ribbon are located on the back side so that the electrode and the ribbon are not exposed externally, so the surface of the photovoltaic cell 1300 in the present invention is separate It may correspond to the face without structure. Details on this will be described later.

The space between the photovoltaic cells 1300 may be filled with the first filler layer 1200 or/and the second filler layer 1400 . That is, it may be filled with the first filler layer 1200, filled with the second filler layer 1400, or filled with the first filler layer 1200 and the second filler layer 1400 in the height direction according to the ratio.

The back sheet 1500 serves to protect the solar module from various external environments such as moisture, impact, and UV, and may include a material such as a fluorine-based film or weather-resistant PET.

2 schematically shows a photovoltaic device 1 according to an embodiment of the present invention.

As shown in FIG. 2 , according to an embodiment of the present invention, a building-integrated photovoltaic device 1 with improved power generation efficiency, workability and durability includes a plurality of photovoltaic modules 1000; and a plurality of zero frames 2000 supporting the photovoltaic module 1000 and fastened to the outer wall of the building, wherein the zero frame 2000 includes a lower plate 2100 fastened to the construction surface of the outer wall of the building. ); A frame portion 2200 having a rectangular shape extending from one end of the lower plate 2100; And an arch portion extending from one end of the side of the skeleton portion 2200, formed on the outside in an arch shape, and distributing stress applied to the opposite side of the photovoltaic module 1000 as supporting the photovoltaic module 1000 ( 2310); and a fixing groove 2320 formed inside in a form surrounding a part of the photovoltaic module 1000, wherein the photovoltaic module 1000 is fixed and when viewed from the outside toward the construction surface, the ah An arch fixing part 2300 in which only a part of the arch part 2310 is exposed to the outside due to the curvature of the teeth 2310; the skeleton part 2200 is constant from one side of the rim of the lower plate 2100. It may correspond to a hollow shape that is formed at a distance and includes a central hole 2210 penetrating in the longitudinal direction for lightening the weight of the zero frame 2000, and one side of the lower plate 2100 is a protruding wing portion 2110. ), the other side of the lower plate 2100 corresponds to the support part 2120, the thickness of the protruding wing part 2110 is thicker than the thickness of the support part 2120, and the bolt to the protruding wing part 2110 5000 is fastened so that the lower plate 2100 can be fastened to the construction surface.

2 (A) corresponds to a view showing a cross-sectional view according to the combination of the photovoltaic module 1000 and the zero frame 2000.

In the present invention, the frame for fixing the building-integrated photovoltaic module 1000 and installing it on an outer wall of a building may correspond to a zero frame 2000 with minimized exposure to the outside.

Specifically, the zero frame 2000 may include a lower plate 2100, a skeleton part 2200, and an arch part 2310 fixing part.

The lower plate 2100 may be fastened to a construction surface corresponding to an outer wall of a building, and the lower surface of the lower plate 2100 may directly contact the construction surface.

In another embodiment of the present invention, the lower plate 2100 may have a different shape than the flat plate of the lower plate 2100 in FIG. 2 (A) according to the shape of the surface to be constructed. That is, when the construction surface on which the photovoltaic module 1000 is to be constructed has an inclination, the lower plate 2100 may be formed of a plate having an inclination corresponding to the inclination of the construction surface, and in the case of an uneven construction surface. , The lower surface of the lower plate 2100 may have various shapes depending on the corresponding construction surface.

The lower plate 2100 may include a protruding wing portion 2110 to which the bolt 5000 is fastened, and a support portion 2120 .

The protruding wing portion 2110 and the support portion 2120 may have different thicknesses, and preferably, the thickness of the protruding wing portion 2110 may be thicker.

The protruding wing portion 2110 and the support portion 2120 may be divided based on the side of the skeleton portion 2200 on which the arch fixing portion 2300 is located, among both sides of the skeleton portion 2200. The protruding wing portion 2110 may correspond to the side where the arch fixing portion 2300 is located.

According to one embodiment of the present invention, the lower plate 2100 includes a protruding wing portion 2110 having a thicker thickness than the support portion 2120, and since the bolt 5000 is fastened to the protruding wing portion 2110, the The bolt 5000 is in contact with a wider area due to the thickness of the protruding wing portion 2110, so that the lower plate 2100 can be fastened to the construction surface, and a greater force is applied to the lower plate 2100. It can exert an effect that can be firmly fastened by applying it.

The protruding wing portion 2110 includes a fastening groove 2111 formed at a predetermined distance from the side edge of the protruding wing portion 2110 facing the side surface of the skeleton portion 2200 where the arch fixing portion 2300 is located. Therefore, the bolt 5000 to be fastened can be guided and fastened according to the fastening groove 2111.

Since the construction surface on which the zero frame 2000 is constructed may correspond to the outer wall of a building, etc., a worker may have inconvenience in finding a place for the bolt 5000 to fasten the bolt 5000 during construction. According to one embodiment of the present invention, since the lower plate 2100 includes a fastening groove 2111 serving as a guide to which the bolt 5000 can be fastened, the effect of promoting operator's convenience can be exerted. there is.

In another embodiment of the present invention, the width of the fastening groove 2111 may have a different shape (depth, width, shape, etc.) from that of FIG. 2 (A) depending on the size and type of the bolt 5000 to be fastened. .

The support part 2120 may serve to support the zero frame 2000 with the construction surface from the load of the photovoltaic module 1000, and when the lower plate 2100 is composed of only the protruding wing part 2110 It is possible to exert an effect of being more firmly seated on the construction surface.

The skeleton portion 2200 may serve to support the photovoltaic module 1000 .

The skeleton unit 2200 may be formed by extending one end of the lower plate 2100 as a square pillar at a predetermined distance from one side of the rim of the lower plate 2100, and the predetermined distance preferably corresponds to 8.5 mm. can The skeleton part 2200 may include a central hole part 2210 penetrated in a rectangular shape having corners separated by a predetermined distance from the center point of the skeleton part 2200 in the vertical direction and the left and right directions, respectively, corresponding to a hollow type. And the weight of the zero frame 2000 can be exerted.

The arch fixing part 2300 may serve to fix the photovoltaic module 1000 . The arch fixing part 2300 may be formed to extend from one end of the side of the skeleton part 2200, and may include an arch part 2310 and a fixing groove part 2320.

The arch portion 2310 may correspond to the outside of the arch fixing portion 2300, and may include a continuous arcuate curved surface starting from a surface having a convex curvature downward from one end of the side surface of the skeleton portion 2200. can That is, it may correspond to the ')' form as a whole.

The fixing groove part 2320 may correspond to the inner side of the arch fixing part 2300, and extends from the top surface of the skeleton part 2200, a surface bent vertically therefrom, and extending therefrom at a certain angle. It may include a bent surface, and may correspond to a form surrounding the photovoltaic module 1000. Details on this will be described later.

According to the configurations described above, the photovoltaic module 1000 may be disposed on the upper surface of the skeleton part 2200 and the lower surface 2323 of the fixing groove part 2320 of the arch fixing part 2300, and It can be fixed by being coupled with the fixing groove 2320 of the tooth part 2300.

(B) of FIG. 2 corresponds to a plan view showing a combination of the photovoltaic module 1000 and the zero frame 2000.

As shown in (B) of FIG. 2, the zero frame 2000 of the present application uses the photovoltaic cell 1300 of the photovoltaic module 1000 so that the power generation efficiency of the photovoltaic module 1000 does not decrease. may not be different. In addition, the zero frame 2000 is less exposed to the outside than the conventional frame, and the photovoltaic cell 1300 has an electrode and a ribbon located on the rear side, so that it can exert an aesthetic effect.

Specifically, the conventional frame may correspond to a 'c' shape, and in order to fix the photovoltaic module 1000, the upper side of the 'c' shape is further by the A indicated in (B) of FIG. Exposed. Due to this, there is a problem in that the photovoltaic cell 1300 of the photovoltaic module 1000 is covered and the power generation efficiency decreases.

In the present invention, the photovoltaic module 1000 can be fixed by the curved surface of the arch fixing part 2300, and accordingly, the arch fixing part 2300 is as much as A shown in (B) of FIG. It may be less exposed, and only a part (B) of the arch fixing part 2300 may be exposed due to the curvature of the arch fixing part 2300 .

Figure 3 schematically shows an enlarged view of the arch fixing part 2300 and the photovoltaic module 1000 of the zero frame 2000 according to an embodiment of the present invention.

As shown in FIG. 3, according to an embodiment of the present invention, the arch portion 2310 of the arch fixing portion 2300 of the zero frame 2000 is formed on the outside in an arch shape, and the photovoltaic module ( 1000) can distribute stress applied to the opposite side of the solar module 1000, and the windshield 1100 has one or more corners of the upper surface 1110 of the windshield 1100 It includes a chamfered surface 1120, and an angle formed between the side surface 1130 of the windshield 1100 and the chamfered surface 1120 is an angle formed between the top surface 2321 of the fixing groove 2320 and the side surface. can correspond with

Each of the four edges of one photovoltaic module 1000 may be combined with one or more zero frames 2000. In FIG. 3, for convenience of explanation, it is described as one zero frame 2000 coupled to one frame. That is, the contents to be described below may be applied to all edges and zero frames 2000 of the photovoltaic module 1000 .

The front glass 1100 of the photovoltaic module 1000 has a shape corresponding to the shape of the fixing groove 2320 of the arch fixing part 2300 in order to be combined with the arch fixing part 2300 of the zero frame 2000. can be processed into

Specifically, at least one of the corners of the upper surface 1110 of the windshield 1100 may be chamfered, so that the windshield 1100 includes an upper surface 1110, a chamfered surface 1120, and a side surface 1130. can do.

The fixing groove part 2320 is a fixing groove part formed by bending and extending vertically from the lower surface 2323 of the fixing groove part 2320 extending from the upper surface of the skeleton part 2200 and the lower surface 2323 of the fixing groove part 2320. It may include a side surface 2322 of 2320 and an upper surface 2321 of the fixing groove 2320 formed by being bent at a predetermined angle from the side surface 2322 of the fixing groove 2320.

The angle between the side surface 2322 of the fixing groove 2320 and the top surface 2321 of the fixing groove 2320 is the angle between the side surface 1130 of the windshield 1100 and the top surface 1110 of the windshield 1100. It may correspond to the angle formed by this.

That is, the shape of the ends (left, right, upper and lower ends) of the cross section of the photovoltaic module 1000 may correspond to the shape of the cross section of the fixing groove 2320, so that the photovoltaic module 1000 It may be fixed and coupled to the fixing groove 2320 of the zero frame 2000. Specifically, the side surface 1130 of the windshield 1100 is in contact with the side surface 2322 of the fixing groove 2320, and a portion of the chamfered surface 1120 of the windshield 1100 is in contact with the fixing groove 2320. It may be in contact with the upper surface 2321 of the.

The coupling may correspond to various methods, such as sliding or widening due to elasticity of the arch fixing part 2300.

On the other hand, the arch fixing part 2300 can distribute the stress by the arch part 2310 formed on the outside.

Specifically, in the zero frame 2000, stress is applied to the arch fixing part 2300 by a load of the photovoltaic module 1000, a fixing force between the photovoltaic module 1000 and the arch fixing part 2300, and the like. can be inflicted When the stress is concentrated by the structure of the structure, problems such as cracks and deformation may occur in the structure.

As described above, in the present invention, in order to prevent a stress concentration phenomenon that may be applied to the arch fixing part 2300, the arch portion 2310 is formed in an arch shape. That is, the stress that may occur due to the arch shape of the arch portion 2310 can be distributed from the fixing groove portion 2320 toward the arch portion 2310.

According to one embodiment of the present invention, the force applied to the arch fixing part 2300 by the photovoltaic module 1000 is not applied to one point by the arch shape of the arch part 2310 but in various directions Since it is dispersed, the effect of securing structural stability can be exhibited.

Meanwhile, according to an embodiment of the present invention, the horizontal axis position of the upper end of the arch part 2310 may coincide with the horizontal axis position of the starting point of the arch part 2310, so that after the arch part 2310 is formed, In the form of digging a groove, the fixing groove 2320 can be processed.

4 schematically illustrates a construction cross-sectional view of a zero frame 2000 according to an embodiment of the present invention.

As shown in FIG. 4, according to an embodiment of the present invention, the two adjacent zero frames 2000, the lower plate 2100 of each of the adjacent zero frames 2000, the skeleton portion ( 2200) and the arch fixing part 2300, the elliptical reinforcing structure 3000 is inserted, and the sealant 4000 is injected into the upper side of the reinforcing structure 3000 to perform construction.

For convenience of explanation in FIG. 4, the arch fixing part 2300 located on the left is called the first arch fixing part 2300.1, and the arch fixing part 2300 located on the right is called the second arch fixing part 2300.2, The configurations each include are described by attaching 1st and 2nd.

The zero frame 2000 may be fastened to a construction surface such as an outer wall of a building by bolts 5000, and the adjacent zero frames 2000 (first zero frame 2000.1 and second zero frame 2000.2) are Finish construction may be performed by the reinforcing structure 3000 and the sealant 4000.

Specifically, the adjacent first zero frame (2000.1) and the second zero frame (2000.2) are arranged so that the outer surfaces of the protruding wing portions 2110 are in contact with each other in the direction in which the arch portions 2310 face each other. can be constructed. That is, the first zero frame 2000.1 and the second zero frame 2000.2 may be disposed so that the first arch fixing part 2300.1 and the second arch fixing part 2300.2 are symmetrical.

As shown in FIG. 4, the first zero frame 2000.1 and the second zero frame 2000.2 arranged adjacently include a first arch fixing part 2300.1, a first skeleton part 2200.1, and a first protruding wing part. (2110.1), the second protruding wing portion (2110.2), the second skeleton portion (2200.2), and the second arch fixing portion (2300.2) can form a construction space.

Bolts 5000.1 and 5000.2 are fastened to the fastening grooves 2111 of the first protruding wing 2110.1 and the second protruding wing 2110.2, respectively, to form the first zero frame 2000.1 and the second zero frame 2000.1. Since the frame (2000.2) can be fastened to the construction surface, an effect of shortening the construction time can be exerted by the dry method.

An elliptical reinforcing structure 3000 may be inserted into the construction space. The reinforcing structure 3000 may correspond to a structure that has elasticity and can be inserted into the construction space, such as a back-up agent or structural sealant.

The reinforcing structure 3000 is inserted into contact with the first arch fixing part 2300.1, the second arch fixing part 2300.2, the first protruding wing part 2110.1 and the second protruding wing part 2110.2. The reinforcing structure 3000 may have a predetermined elastic force, so that the first arch fixing part 2300.1 and the second arch fixing part 2300.2 and the reinforcing structure 3000 may be in watertight contact. Therefore, the effect of protecting the part to which the bolt 5000 is fastened from moisture or the like can be exerted.

In addition, since force is applied to the first arch fixing part 2300.1 and the second arch fixing part 2300.2 in the direction where the photovoltaic module 1000 is located by the elastic force of the reinforcing structure 3000, the first Structural stability can be promoted by supporting the first arch fixing part 2300.1 and the second arch fixing part 2300.2 with the load applied to the first arch fixing part 2300.1 and the second arch fixing part 2300.2 can be effective.

According to one embodiment of the present invention, since the arch fixing part 2300 forms an arch-shaped arch part 2310 protruding from the skeleton part 2200, the width between adjacent zero frames 2000 is reduced to form a reinforcing structure ( 3000) becomes closer to each other, so that the size of the reinforcing structure 3000 can be reduced.

A sealant 4000 may be injected into the upper side of the reinforcing structure 3000 . Specifically, the sealant 4000 borders the parts where the reinforcing structure 3000, the first arch fixing part 2300.1 and the second arch fixing part 2300.2 contact each other (A and B in FIG. 4). It can be injected into the upper side of the furnace, and can be filled up to the upper side of the first arch fixing part 2300.1 and the second arch fixing part 2300.2.

The sealant 4000 may correspond to a sealant 4000 of a component capable of adhering to the reinforcing structure 3000, the first arch fixing part 2300.1 and the second arch fixing part 2300.2, preferably. More specifically, it may correspond to a weather sealant and a structural sealant.

According to the construction as described above, in one embodiment of the present invention, only a part of the photovoltaic module 1000, sealant 4000, and arch fixing part 2300 may be exposed on the outer wall of the building after construction, so that aesthetics can be improved can be effective.

In another embodiment of the present invention, the entire arch fixing part 2300 can be covered with the sealant 4000, so that only the photovoltaic module 1000 and the sealant 4000 can be exposed to the outside.

The height of the injected sealant 4000 and the size of the reinforcing structure 3000 in FIG. 4 are only examples, but are not limited thereto.

5 schematically illustrates a photovoltaic cell 1300 according to an embodiment of the present invention.

As shown in FIG. 5 , according to an embodiment of the present invention, the photovoltaic cell 1300 includes an antireflection layer 1310; an upper passivation layer 1320 disposed below the antireflection layer 1310; a front conductive layer 1330 disposed below the upper passivation layer 1320; an n-type substrate 1340 disposed below the front conductive layer 1330; a bottom conductive layer 1350 including a first bottom conductive portion 1351 and a second bottom conductive portion 1352 bonded to each other under the n-type substrate 1340 and arranged to cross each other; a lower passivation layer disposed under the lower conductive layer 1350; a first electrode 1370 disposed below the bottom conductive layer 1350 and connected to the first bottom conductive portion 1351; and a second electrode 1380 disposed below the lower conductive layer 1350 and connected to the second lower conductive portion 1352 .

Specifically, the photovoltaic cell 1300 includes an antireflection layer 1310, an upper passivation layer 1320, a front conductive layer 1330, an n-type substrate 1340, and a bottom conductive layer 1350 sequentially arranged from the top. ), and a lower floating layer, and may include a first electrode 1370 and a second electrode 1380 disposed below the lower floating layer.

The antireflection layer 1310 may serve to prevent sunlight coming from the outside from being reflected, and may preferably include silicon nitride (SiNx).

The upper passivation layer 1320 and the lower passivation layer are passivation layers, and may contain a material capable of preventing recombination of electrons and holes by protecting the surface and blocking the contact surface, preferably silicon oxide (SiO ₂ ) can include

The front conductive layer 1330 is a region doped with n+ on the upper surface of the n-type substrate 1340 and may correspond to a front surface field (FSF).

The n-type substrate 1340 may include an n-type silicon wafer doped with an n-type impurity containing a group V element such as phosphorus, arsenic, and antimony.

The bottom conductive layer 1350 may include a first bottom conductive portion 1351 and a second bottom conductive portion 1352, and the first bottom conductive portion 1351 and the second bottom conductive portion 1352 may be bonded to each other and arranged to cross each other.

The first bottom conductive portion 1351 is a back surface field (BSF) and may be doped with an n-type impurity capable of inducing an electric field effect. The second bottom conductive portion 1352 may correspond to a p-type emitter and may be doped with a p-type impurity. That is, the first bottom conductive portion 1351 and the second bottom conductive portion 1352 may correspond to a p-n junction.

The first electrode 1370 may be connected to the first bottom conductive part 1351 , and the second electrode 1380 may be connected to the second bottom conductive part 1352 . The first electrode 1370 and the second electrode 1380 are

According to one embodiment of the present invention, since the electrodes of the photovoltaic cell 1300 are disposed on the rear surface, the electrodes and the ribbon soldering the electrodes may not be exposed to the outside.

According to one embodiment of the present invention, since the arch fixing portion of the zero frame is minimally exposed to the outside, contamination due to foreign substances or the like caused from the outside can be minimized.

According to one embodiment of the present invention, since the arch fixing portion of the zero frame is minimally exposed to the outside, it is possible to achieve an effect of increasing power generation efficiency by forming a minimum shadow without covering the photovoltaic cells.

According to one embodiment of the present invention, since the arch portion of the arch fixing portion fixing the photovoltaic module is formed in an arch shape, the effect of distributing stress generated in fixing the photovoltaic module without being concentrated. can exert

According to one embodiment of the present invention, since the zero frame includes protruding blades capable of fastening the bolts 5000 to the construction surface, an effect that can be constructed by a dry method can be exhibited.

According to an embodiment of the present invention, since the zero frame fixes the solar module by the top and side surfaces of the fixing groove forming a certain angle and the windshield of the solar module forming the certain angle, the zero frame is separate with its own frame. It is possible to exhibit the effect of fixing the photovoltaic module without an additional structure.

According to an embodiment of the present invention, the arch fixing part is minimally exposed to the outside, and when constructing a building-integrated photovoltaic module, the zero frame can be finished with a structural sealant, so it can exert an effect of forming a beautiful appearance. can

According to one embodiment of the present invention, the photovoltaic cell of the photovoltaic module is not exposed to the outside because the electrode and the ribbon are located on the back side, so that aesthetic effects can be exhibited.

As described above, although the embodiments have been described with limited examples and drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved. Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

1: Solar power generation device
1000: solar module
1100: windshield 1110: upper surface of the windshield
1120: chamfered surface of windshield 1130: side of windshield
1200: first filler layer
1300: photovoltaic cell 1400: second filler layer
1500: back seat
2000: Zero Frame
2100: lower plate
2110: protruding wing 2111: fastening groove
2120: support
2200: skeleton part 2210: center hole part
2300: arch fixing part 2310: arch part
2320: fixing groove 2321: upper surface of fixing groove
2322: the side of the fixing groove 2323: the lower surface of the fixing groove
3000: reinforcing structure 4000: sealant
5000: Volt

Claims (6)

As a building-integrated solar power generation device with improved power generation efficiency, workability and durability,
A plurality of solar modules; and
A plurality of zero frames supporting the photovoltaic module and fastened to the outer wall of the building; includes,
The solar module,
windshield;
A first filler layer including EVA or PVB and disposed on the lower side of the windshield;
A second filler layer comprising EVA or PVB and disposed below the first filler layer;
a back sheet disposed below the second filler layer; and
One or more photovoltaic cells that are fixedly disposed between the first filler layer and the second filler layer, the electrodes are located on the rear side, and the electrodes and the ribbon for soldering the electrodes are not exposed to the outside. include,
The zero frame,
a lower plate fastened to the construction surface of the outer wall of the building;
A rectangular frame portion extending from one end of the lower plate; and
an arch portion extending from one end of a side surface of the skeleton portion, formed outside in an arch shape, and supporting the photovoltaic module to distribute stress applied to the opposite side of the photovoltaic module; and a fixing groove formed inside in a form surrounding a portion of the photovoltaic module, and when the photovoltaic module is fixed and viewed from the outside toward the construction surface, only a portion of the arch portion is outside due to the curvature of the arch portion. Including; arch fixation exposed to;
The two adjacent zero frames are arranged in opposite directions to each other so that each of the arch fixing parts is symmetrical,
The two adjacent zero frames,
An elliptical reinforcing structure is inserted into a space formed by the lower plate, the skeleton part, and the arch fixing part of each of the adjacent zero frames, and a sealant is injected into the upper side of the reinforcing structure to be installed.
The method of claim 1,
One side of the lower plate corresponds to a protruding wing part, and the other side of the lower plate corresponds to a support part,
The thickness of the protruding wing portion is thicker than the thickness of the support portion,
Bolts are fastened to the protruding wings, so that the lower plate is fastened to the construction surface.
The method of claim 1,
The skeleton part is formed at a predetermined distance from one side of the edge of the lower plate and corresponds to a hollow shape including a central hole penetrating in the longitudinal direction for lightening the weight of the zero frame.
The method of claim 1,
The front glass,
At least one of the edges of the upper surface of the windshield includes a chamfered surface,
An angle formed between the side surface of the windshield and the chamfered surface corresponds to an angle formed between an upper surface and a side surface of the fixing groove.
delete The method of claim 1,
The photovoltaic cell,
antireflection layer;
an upper passivation layer disposed below the antireflection layer;
a front conductive layer disposed below the upper passivated layer;
an n-type substrate disposed below the front conductive layer;
a bottom conductive layer including first bottom conductive parts and second bottom conductive parts bonded to each other below the n-type substrate and arranged to cross each other;
a lower passivation layer disposed under the lower conductive layer;
a first electrode disposed under the bottom conductive layer and connected to the first bottom conductive part; and
A photovoltaic device comprising: a second electrode disposed under the bottom conductive layer and connected to the second bottom conductive part.

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