KR20180002388U - Multi-functional bipv windows system - Google Patents

Abstract

The purpose of this design is to provide a multifunctional BIPV system that can increase the power generation efficiency of the BIPV system and prevent both cooling load in summer and condensation in winter.
According to the above object, the present invention provides a solar cell comprising a double-sided solar cell disposed between a front glass and a rear glass, a reflection layer formed on the rear glass to increase power generation efficiency, a transparent electrode formed on a rear glass surface disposed toward the room, A multi-functional type BIPV system capable of preventing the condensation phenomenon by further arranging a heat-generating glass having a transparent electrode formed on the back side, that is, the side facing the room.

Description

Multi-functional BIPV window system {MULTI-FUNCTIONAL BIPV WINDOWS SYSTEM}

The present invention relates to a BIPV window system that uses solar power generation for building windows, and uses energy efficiently by operating photovoltaic power generation facilities by BIPV windows.

Photovoltaic power generation is widely used as a typical green energy supply. In particular, the BIPV module that attaches solar cells to the exterior walls and windows of a building is an integral part of the building, so it plays a role as a building exterior material along with the power generation system. These BIPV modules should have structural safety and durability as building exterior materials, and should have electrical power generation capability and electrical safety to protect buildings and people from electrical accidents. Buildings with BIPV modules should be able to adjust the transparency of the windows so that they can see the outside scenery, while blocking the light inflow to some extent to reduce the cooling load in summer.

On the other hand, in winter, condensation occurs on the windows where the BIPV module is installed, which is problematic to repair.

Korean Patent No. 10-1506590 discloses a multilayer glass having a solar cell and an area heating element, but the area heating element is made of a material such as carbon black, so that a transparent window can not be formed.

Therefore, the purpose of the present invention is to provide a multi-functional BIPV system which optimizes the power generation and consumption of the window system to which the BIPV module is applied.

That is, the object of the present invention is to provide a multi-functional BIPV system that can enhance the power generation efficiency of the BIPV system and prevent both the cooling load in summer and the condensation in winter.

According to the above object, the present invention provides a solar cell comprising a double-sided solar cell disposed between a front glass and a rear glass, a reflection layer formed on the rear glass to increase power generation efficiency, a transparent electrode formed on a rear glass surface disposed toward the room, A multi-functional type BIPV system capable of preventing the condensation phenomenon by further arranging a heat-generating glass having a transparent electrode formed on the back side, that is, the side facing the room.

In the present invention,

A front glass exposed to the outside;

Rear glass facing the room;

A double-sided solar cell installed between the front glass and the rear glass; And

A multi-functional type BIPV system including a glass coated with a reflective layer to improve power generation efficiency and reduce a cooling load.

The multi-functional BIPV system is characterized in that the glass coated with the reflective layer is a rear glass or a separate double glass.

The multi-functional BIPV system is characterized in that the reflective layer has a pattern.

In the present invention,

A front glass exposed to the outside;

Rear glass facing the room;

A double-sided solar cell installed between the front glass and the rear glass; And

And a discoloration glass including a coloring material and a transparent electrode.

The present invention further provides a multifunctional BIPV system, wherein the BIPV system further comprises a heat-generating glass having a transparent electrode formed on the inner surface of the glass coated with the reflective layer.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, in which: FIG.

The present invention provides a multi-functional BIPV system including the control module, wherein power generated from the double-side solar cell is supplied to the discolored glass or the heat-generating glass.

In the above, the control module includes power supply control of the interior lighting, and provides a multifunctional type BIPV system in which the illuminance of the interior lighting is controlled brightly when the amount of blocking of the incident light is increased by controlling the discoloration glass .

According to the present invention, by applying a double-sided solar cell, it is possible to contribute to power generation from indoor to outside as well as sunlight from the outside to the room, thereby enhancing power generation efficiency.

In addition, according to the present invention, it is possible to remove the winter condensation phenomenon by supplying the generated power from the solar cell to the heat-generating glass by installing the heat-generating glass in the indoor side, and the transparent glass is installed in the heat- .

In order to drive the double-sided solar cell, the reflective layer formed on the rear glass is formed in a pattern shape to maintain the transparency while giving a sense of the window, and the solar radiation amount can be controlled by the application of the discoloring material.

In addition, by applying low-e glass between the front glass and the back glass, the heat shielding effect is enhanced.

In addition, the present invention is very convenient and efficient because it can control the discoloration degree of the discolored glass or the calorific value of the heat-generating glass by the electric power generated from the solar cell using the control module.

In addition, the present invention makes the indoor environment pleasant by controlling the room lighting by controlling the control module when the incident light amount is controlled by controlling the discolored glass.

1 is a cross-sectional view showing a BIPV module to which a double-sided solar cell is applied according to the present invention.
Fig. 2 is a schematic diagram showing a red glass in which a double-sided solar cell is applied according to the present invention and a reflective layer is coated on the back glass.
FIG. 3 is a schematic diagram illustrating improvement of power generation efficiency of a double-sided solar cell by a reflection layer coating.
4 is a perspective view showing a BIPV module to which a heat-generating glass and a Royer glass are applied according to the present invention.
5 is a photograph showing a BIPV window to which a discoloring glass is applied according to the present invention.
6 is a cross-sectional view illustrating a configuration of a BIPV module to which the discoloring glass is applied according to the present invention.
FIG. 7 is a schematic diagram showing that power generated in a solar cell according to the present invention is controlled and used by a control module.
8 is a schematic diagram of a configuration of a multi-function type BIPV window fusion system.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view showing a BIPV module to which a double-sided solar cell according to the present invention is applied. The double-sided solar cell 100 is disposed between the front glass 200 contacting the outside of the building and the rear glass 300 facing toward the inside to form a single BIPV glass module. A reflective layer 400 is formed on the surface of the rear glass 300 . In manufacturing the BIPV glass module, the double-sided solar cell 100 is sandwiched between the transparent films and sandwiched between the front glass 200 and the back glass 300 again.

The reflective layer 400 may be formed in a pattern to have a light transmitting surface of about 10 to 30%, as will be described later. In addition, the reflective layer itself may be formed of a material that maintains translucency so that the outside scenery can be viewed as a window. The reflective coating material and the method of formation may be known in the art.

Since the double-sided solar cell generates electricity by using the light incident through the front glass 200 and also through the light reflected by the reflection layer 400 and the light incident through the reflection layer in the room, Type solar cells compared to conventional BIPV modules by more than 10%.

In FIG. 2, the reflection layer 400 coating has a pattern such as a stripe pattern, a rectangular pattern, and a rhombic pattern, so that light can be incident through the margins of the pattern. In the upper left corner, a reflective layer is formed on the entire surface of the Roy glass. In the upper right corner, an example of a stripe pattern is illustrated. The light reflected by the reflective layer is absorbed by the double-sided solar cell to contribute to power generation. FIG. 2 illustrates that the reflective layer can have various patterns. In the case of the rhombic array and the rectangular array, the aesthetic effect can be obtained and the light transmittance can contribute to the illuminance of the room at 30% and 20%, respectively . In the case of the stripe type, the transmittance is about 10%, but these values are controlled by controlling the line width. In addition, various patterns such as a circle, a polygon, an amorphous shape, and a specific shape can be provided.

FIG. 3 shows the structure and function of the BIPV module using the reflection layer in more detail.

On the upper left side is a general double glass and on the right side is a dual structure BIPV module without a reflection layer and on the lower left side is a double sided solar cell module in which a double sided solar cell is arranged between a front glass and a rear glass, The BIPV module in which the double glass is disposed is shown. Here, the reflection layer is formed on the front surface (referred to as the outward facing surface) of the rear glass, thereby promoting the power generation by the double-sided solar cell. On the lower right side, a reflective layer was formed on a double-sided solar cell module and a double glass disposed with a space. That is, a reflective layer was formed on the front surface of the double glass disposed inside, so that the reflected light was absorbed by the double-sided solar cell. The reflective layer may be patterned or fully coated.

FIG. 4 shows a glass module for BIPV including a heat-generating glass 500 for preventing condensation and low-e glass 600 and 610. In the case of windows equipped with solar cells, the condensation due to the temperature difference between indoor and outdoor in winter is a main cause of consumers' dissatisfaction. Therefore, it is preferable to dispose the heat-generating glass 500 on the inner side in contact with the room. The heat-generating glass 500 forms a transparent electrode so as to maintain transparency and applies electric power thereto to generate heat. The transparent electrode can be formed by a known deposition process such as ITO, IZO, ZnO, AZO or the like.

The heat-generating glass 500 is disposed on the innermost side in contact with the interior of the room, and two glass rods 600 and 610 are disposed. On the other side of the glass rods 600 and 610, Can be arranged.

The glass rods 600 and 610 and the heat-generating glass 500 are assembled to an aluminum frame, closed with an insulating PVC cover, and equipped with a thermal brake. The heat brake is intended to provide a heat shielding effect by placing a material with a poor thermal conductivity in the middle because aluminum has good thermal conductivity.

The temperature difference ratio TDR was controlled to be 0.22 or less by the heating glass.

In this case, a transparent electrode may be formed on the inner surface side of the heat-generating glass so that the heat can be generated using electric energy generated from the double-side solar cell at a certain temperature or lower.

FIG. 5 is a photograph showing a BIPV module to which a discoloring substance is applied to glass according to the present invention. FIG. That is, in order to reduce the cooling load during the summer, coloring materials were applied to the glass to control various colors. The discoloring material is such as tungsten oxide (WO ₃ ) which causes electrochromism and is fabricated as a module containing glass substrate / transparent electrode / WO ₃ / solid electrolyte. It is preferable that the discoloration glass is disposed immediately after the heat-generating glass 500. That is, as a whole, a BIPV module is constructed in the order of a glass / double-sided solar cell / front glass with a heating glass / discolored glass / reflective layer formed therein from the inside.

In the above, the SHGC (Solar Heat Gain Coefficient) of the electrochromic glass was adjusted to 0.4 or less, and the visible light transmittance (shading effect) was adjusted to 20% or less.

The BIPV module controls the degree of discoloration and the degree of heat generation through the control module, thus making it possible to optimize the situation.

In FIG. 6, when the discoloring glass is applied, the blocking effect of sunlight is described in more detail. The incident sunlight is divided into visible light and infrared light. In the upper left corner, both of them are absorbed in the general double glass, but almost all of them are transmitted, which increases the cooling load in summer. In the case of the upper right side, a double-sided solar cell and a double glass are installed so that infrared rays (solar heat) are partially absorbed, but most of the rays enter the room, and visible light is incident through a place without a solar battery. .

Most of the visible light is reflected by the reflective layer and is absorbed by the double-sided solar cell or sent out to the outside. Part of the infrared rays are transmitted through the reflection layer to enter the room. do. In this case, therefore, there is a certain need to reduce the cooling load in the summer. On the lower right side, a double-sided solar cell module was disposed in a state that the backside glass of the double-sided solar cell was not coated with the reflection layer, and the discolored glass was arranged instead of the double glass. In this case, both the visible light and the infrared light are reflected by the discoloration glass. Particularly, by adjusting the voltage applied to the transparent electrode of the discolored glass to enhance the degree of discoloration, the reflectance of visible light and infrared light can be increased, so that the summer cooling load can be greatly reduced.

FIG. 7 is a schematic diagram showing that power generated in a solar cell according to the present invention is controlled and used by a control module.

Multi-function BIPV system is integrated with Internet (IoT) technology to reduce heating and cooling load. Controlling discolored and heated glass using electrical energy generated from double-sided solar cells. That is, by controlling the power applied to the discolored glass, the degree of discoloration is controlled to reduce the cooling load, and in winter, the power applied to the heating glass is controlled to control the heat released from the heating glass. The degree of discoloration and the calorific value can be controlled by the temperature sensor so that the power is automatically applied for a predetermined time when the control module is above the threshold value and then automatically shut off to charge the generated energy.

In addition, when light incident on the room is blocked by power application to the discoloration glass, since the amount of natural light is reduced, it is preferable from the viewpoint of energy efficiency to control the illuminance of the room lighting.

8 is a schematic diagram of a configuration of a multi-function type BIPV window fusion system.

The BIPV module with double-sided solar cell / discoloration glass / heat-insulating glass is charged and discharged through ESS (Energy Storage System). ESS, including lithium-ion batteries, stores the energy generated from solar cells in batteries and supplies them to various indoor electrical devices. At this time, power is supplied to the discolored glass and the heat-generating glass, and to the discolored glass in the summer and to the heat-generating glass in the winter. The temperature sensor may be installed on the outside of the room or may be installed both indoors and outdoors as required. The control module sets the critical temperatures to differentiate the amount of power applied to the discoloration glass at a predetermined temperature or more and to set the threshold values for the temperature difference between the room temperature and the room temperature or below, . ≪ / RTI > As described above, the power amount control for the discolored glass can be associated with the illumination control of an indoor lighting or the like. By increasing the degree of discoloration of the discolored glass and blocking the transmission of the light quantity much more, the light is adjusted to be brighter.

The power supply to the discolored glass and the heat-generating glass can be set to be controlled automatically, and it is preferable to configure the control module so as to be manually operated.

Such multifunctional BIPV modules and ESSs can enhance the energy efficiency and provide a comfortable environment by adjusting indoor lighting, humidity, and temperature.

It is to be understood that the invention is not limited to the embodiments described above but is defined by the appended claims and that those skilled in the art can make various modifications and alterations within the scope of the claims It is self-evident.

In the double-sided solar cell 100,
The front glass (200)
In the rear glass 300,
The reflective layer (400)
The heat-
Low-e glass 600, 610,

Claims (4)

Heating glass in contact with the room;
A discoloring glass arranged outside the heat-generating glass and causing electrochromism;
A red glass disposed on the outside of the discoloration glass and having a reflective layer for reflecting light;
A double-sided solar cell arranged outside the glass; And
A BIPV module disposed outside the double-side solar cell and exposed to the outside,
The BIPV module is charged / discharged through an ESS (Energy Storage System)
The power generated from the double-sided solar cell is supplied to the discoloration glass and the heat-generating glass,
In conjunction with the temperature sensor, it adjusts the power applied to the discolored glass in the summer to control the degree of discoloration, thereby reducing the cooling load. In winter, the power applied to the heating glass is controlled to control the amount of heat released from the heating glass. And the calorific value adjustment is performed such that when the value of the temperature sensor associated with the control module is equal to or greater than the threshold value, the power is automatically applied for a predetermined time,
Wherein the application of power to the discoloration glass corresponds to the reduction of the amount of natural light in conjunction with the illumination control of the interior illumination. The reflective layer coating according to claim 1, wherein the reflective layer coating is a front type or a pattern such as a stripe, a quadrangle, and a rhombic arrangement, allowing light to be incident through the margins of the pattern figure, and has a light transmission control effect and a aesthetic effect Wherein the BIPV system is a multi-functional BIPV system. The method according to claim 1, wherein the SHGC (Solar Heat Gain Coefficient) of the electrochromic glass is adjusted to 0.4 or less and the visible light transmittance (shading effect) is adjusted to 20% or less. BIPV system. The method according to claim 1, wherein the temperature difference ratio TDR (

) Is controlled to be 0.22 or less.

Images