WO2022019659A1

WO2022019659A1 - Solar cell reflective structure

Info

Publication number: WO2022019659A1
Application number: PCT/KR2021/009443
Authority: WO
Inventors: 전영권
Original assignee: 주식회사 나노밸리
Priority date: 2020-07-24
Filing date: 2021-07-21
Publication date: 2022-01-27

Abstract

The present invention relates to a solar cell reflective structure provided to be adjacent to a solar cell panel in order to increase the power generation efficiency of a solar cell by increasing the amount of sunlight incident on the solar cell panel. The solar cell reflective structure according to the present invention comprises a variable reflective plate so as to be foldable and/or attachable/detachable, and thus the amount of sunlight incident on the front surface of the solar cell panel is increased through the reflection of sunlight in an unfolded state of the reflective plate, and, when the wind blows at least as strongly as a predetermined reference, the reflective plate can be folded or easily detached from a rack so that damage to the reflective plate can be prevented. In addition, the solar cell reflective structure according to the present invention has a reflective plate formed as a flexible reflector that includes a reflective film, so as to facilitate mounting, storage, and portability, and thus the power generation amount of the solar cell can be increased through an increase in the amount of sunlight incident on the solar cell while reducing limitations on place.

Description

Reflective structures for solar cells

The present invention relates to a reflective structure for a solar cell including a reflecting plate disposed on at least one side of a solar cell panel to reflect sunlight to the solar cell panel.

More specifically, since the reflector is configured in a foldable and/or detachable manner, it increases the amount of sunlight incident on the front surface of the solar cell panel through sunlight reflection in a state in which the reflector is unfolded, and the wind blows strongly above a certain standard. It relates to a reflective structure for a solar cell that can prevent damage to the reflector by folding the reflector or allowing it to be easily separated from the cradle.

In addition, as the reflector is formed of a flexible reflector, it is easy to install, store, and carry, and it relates to a reflective structure for a solar cell that can increase the amount of power generated by the solar cell by improving the amount of incident sunlight without being limited to a location.

In general, solar cell modules connect cells and cell electrode wires with copper ribbons, and are laminated in the order of backsheet, EVA (Ethylene-Vinyl Acetate), solar cell, EVA (Ethylene-Vinyl Acetate), and cover glass. It is completed through the steps of pressing and closing the edge of the pressed laminate with an aluminum frame, and installing a junction box for connecting the copper ribbon to the output cable on the back side.

A conventional solar cell module is generally manufactured by connecting a plurality of unit cells in series and/or in parallel to form a flat plate having a large area. This type of solar cell module is difficult to produce a lot of output in a narrow space, and it is difficult to reabsorb the reflected light reflected from each sub-module.

On the other hand, as in the following prior patent document 1, a structure for increasing power generation efficiency through a reflector is disclosed. However, there is a problem in that a shadow is cast on the panel by the reflector, which reduces the power generation efficiency compared to the installation space, or the reflector is damaged when a strong wind blows.

In addition, as in the following prior patent document 2, in order to increase the power generation efficiency of the solar cell module, a reflecting plate installed around the solar cell module to reflect sunlight toward the solar cell is disclosed, but the reflecting plate requires a lot of installation space Or, there is a problem in that storage or movement is not easy.

(Prior Patent Document 1) Republic of Korea Patent Publication No. 10-0090752

(Prior Patent Document 2) Republic of Korea Patent Publication No. 2020-0080725

One object of the present invention is to provide a structure in which the reflective plate can be easily detached or folded in preparation for strong wind while maintaining an optimal installation angle to further increase the amount of power generation per installation area and/or per solar cell panel. To provide a reflective structure for a solar cell that can prevent damage to the reflective plate.

In addition, the reflective structure for solar cells is easy to install, store, and carry, so that the reflective plate can be installed while reducing the restrictions on the location, so that the amount of sunlight incident on the solar cell can be improved to increase the amount of power generated by the solar cell. is to provide

In order to achieve the above object, the present invention provides a reflective structure for a solar cell of the following (1) to (24).

(1) A reflective structure for a solar cell comprising a reflector disposed on at least one side of the solar cell panel to reflect sunlight to the solar cell panel.

(2) In the reflective structure for a solar cell according to (1), a reflective plate assembly including one or more of the reflective plate, a cradle for mounting the reflective plate assembly, and one side being fixed to the cradle, the solar cell A reflective structure for a solar cell, comprising a fixture for fixing one side of the reflector assembly to enable adjustment of an inclination angle with respect to the battery panel.

In this solar cell reflective structure, since the reflective plate assembly is fastened to the cradle so that the angle can be adjusted, it is possible to easily adjust the installation angle of the reflective plate in consideration of the amount of light incident on the solar cell panel, thereby further improving the power generation efficiency of the solar cell panel make it possible

(3) The reflective structure for a solar cell according to (2), wherein the reflective plate assembly includes two or more reflective plates, and the two or more reflective plates are connected to an adjacent reflective plate so as to be mutually foldable.

Such a reflective structure for a solar cell may reduce the wind force applied to the reflective plate by folding a plurality of reflective plates when the wind blows strongly, or reduce the volume when transporting/storing the reflective structure, thereby facilitating handling.

(4) In the reflective structure for a solar cell according to (3), two rails fixed to the fixture at a predetermined interval on both sides of the reflector assembly so that the installation angle can be adjusted, and fixed to one end of the reflector assembly A first support rod to be a first support rod, a second support rod fixed to the other end positioned on the side of the cradle of the reflection plate assembly, and a third support rod connected to the first support rod and the second support rod across the reflection plate assembly, Both ends of the first support rod are slidably connected to the rail, and at least one end of the second support rod is fixed to the rail, and by sliding of the first support rod, the reflection plates constituting the reflection plate assembly are folded. Or the unfolding operation is made, a reflective structure for a solar cell.

Since the reflective structure for solar cells has a structure in which a plurality of reflective plates slide along rails, folding and unfolding of the reflective plates can be made within a short time.

(5) In the reflective structure for a solar cell according to (3) above, at a predetermined distance on both sides of the reflective plate assembly, the installation angle can be adjusted in the fixture and the length can be adjusted at the same time, two supports, and the reflective plate assembly A first support rod fixed to one end of the reflective plate assembly, a second support rod fixed to the other end positioned on the cradle side of the reflection plate assembly, and a third support rod connected to the first support rod and the second support rod across the reflection plate assembly Further comprising, at least one end of the first support bar is fixed to the support, and at least one end of the second support bar is fixed to the support, by adjusting the length of the support, the reflectors constituting the reflector assembly A reflective structure for a solar cell that can be folded or unfolded.

In such a reflective structure for a solar cell, folding and unfolding of the reflective plate can be made within a short time by adjusting the length of the length-adjustable support.

(6) In the reflective structure for a solar cell according to (4), a depression is further formed on the rail for accommodating ends of the first support rod and the second support rod, and the ends of the first support rod and the second support rod are recessed. A reflective structure for a solar cell that is detachably attached to and detached from the rail through a method of inserting or detaching the part.

Such a reflective structure makes the reflective plate assembly easily detachable from the rail, thereby facilitating installation, transport, and storage of the reflective structure.

(7) in the reflective structure for a solar cell according to (4) or (5), further comprising a driving device connected to one side of the reflective plate assembly, wherein the reflective plates constituting the reflective plate assembly are folded or A reflective structure for a solar cell, in which an unfolding operation is made.

Such a reflective structure for a solar cell enables folding or unfolding of the reflectors to be driven through a driving device, thereby reducing the effort of manually folding or unfolding the reflectors.

(8) In the reflective structure for a solar cell according to (7), the driving device is connected to the third support rod and drives the third support rod forward or backward, thereby folding or unfolding the reflection plates constituting the reflection plate assembly A reflective structure for a solar cell in which the action is made.

The reflective structure for a solar cell is a combination of a structure that can easily fold and unfold a reflector and a driving device, and it is possible to obtain an effect of facilitating the automatic folding or unfolding of the reflector.

(9) In the reflective structure for solar cells according to (7) above, a wind pressure sensor that detects wind pressure around the reflector and generates an electrical signal, and a control signal of the driving device based on the electrical signal of the wind pressure sensor A reflective structure for a solar cell further comprising a control unit that controls the control unit to perform folding or unfolding driving on the driving device based on a predetermined wind pressure sensed by the wind pressure sensor.

(10) In the reflective structure for a solar cell according to (9) above, the step of determining, by the controller, whether the output voltage of the wind pressure sensor exceeds or falls below a reference voltage, and when the reference voltage is exceeded, the controller Transmitting a folding driving control signal to the driving device; and driving the driving device receiving the folding driving control signal to perform a folding operation of the reflectors constituting the reflector assembly.

(11) In the reflective structure for a solar cell according to (9) above, the step of determining, by the controller, whether the output voltage of the wind pressure sensor exceeds or falls below a reference voltage; A reflective structure for a solar cell, comprising the steps of: transmitting an unfolding driving control signal to the driving device;

In the reflective structure for solar cells according to the above (9) to (11), when the wind blows strongly above a certain standard and there is a possibility that damage to the reflective plate or the solar cell panel may occur, setting the reference voltage of the wind pressure sensor Through this, it is possible to minimize damage from wind power by automatically folding the reflectors without the need for administrators to manage them separately.

(12) In the reflective structure for a solar cell according to (7), the driving device further comprises a wireless transceiver for receiving a control signal, a wind pressure sensor sensing wind pressure around the reflector to generate an electrical signal; In a central control center having a control unit for generating a control signal of the driving device based on the electrical signal of the wind pressure sensor, by wirelessly transmitting a control signal to the driving device to drive the driving device, a reflective structure for a solar cell .

The reflective structure for solar cells does not include a wind pressure sensor and a control unit in each reflective structure, but transmits a control signal to each reflective structure in a batch from a central control center to control the reflective structure. When a battery panel is installed, it makes it easier to manage the folding and unfolding of the reflector.

(13) The reflective structure for a solar cell according to (2), wherein the reflection plate assembly is detachably fixed to the fixture.

The reflective structure for a solar cell facilitates management of the reflective plate assembly by allowing the reflective plate assembly to be easily fastened to and separated from the cradle.

(14) The reflective structure for a solar cell according to (2) to (6), (13), wherein a handle for handling the reflective plate assembly is formed at an upper end of the reflective plate assembly.

Such a reflective structure has the effect of not only making it easier to perform detachment of the reflector assembly through the handle, but also makes it convenient to manually fold and unfold the reflectors constituting the reflector assembly.

(15) In the reflective structure for a solar cell according to (1), the reflective plate is formed of a flexible reflector including a reflective film, the reflective structure for a solar cell.

(16) In the reflective structure for a solar cell according to (15), the flexible reflector includes a fabric of a predetermined thickness made of fibers, a reflective film attached to one surface of the fabric, and a reflective layer formed on the reflective film Including, a reflective structure for a solar cell.

(17) The reflective structure for a solar cell according to (16), wherein the reflective film includes a resin film and a reflective layer formed on the resin film.

(18) in the reflective structure for solar cells according to (15), wherein the flexible reflector extends in the longitudinal direction, and a winding roll on which the flexible reflector is wound, and a housing accommodating the winding roll therein; The reflective structure for a solar cell, each further comprising a support means installed on at least one of both ends to rotatably support the winding roll.

(19) In the reflective structure for a solar cell according to (18), further comprising a driving means for rotationally driving the winding roll, the reflective structure for a solar cell.

(20) In the reflective structure for a solar cell according to (15), a first fixing base for supporting one end of the flexible reflector, and a second fixing base for supporting the other end of the flexible reflector opposite to the one end, The flexible reflector is formed to be foldable at a predetermined interval, and includes folding or unfolding of the flexible reflector through movement of either one or both of the first and second fixtures.

(21) In the reflective structure for a solar cell according to (15), the flexible reflector further comprises a detachable means for attaching and detaching it to a predetermined support means, a reflective structure for a solar cell.

(22) In the reflective structure for a solar cell according to (15), a support for supporting the flexible reflector, a holder for mounting the support, and fixing means for fixing the support to the holder, for solar cells reflective structures.

(23) The reflective structure for a solar cell according to (17), wherein the reflective layer is formed of a metal or non-metal thin film.

(24) In the reflective structure for a solar cell according to (17), the resin film is formed of at least one selected from polyethylene terephthalate (PET), polyvinyl carbonate (PVC) and polycarbonate (PC). Reflective structures for batteries.

The reflective structure for a solar cell according to the present invention is composed of a folding and/or detachable type, so that when the wind is weak, the amount of sunlight incident on the front surface of the solar cell panel is increased through reflection of the sunlight in a state in which the reflector is unfolded. It increases the power generation efficiency of the battery panel, and when the wind blows stronger than a certain standard, it can be easily or manually folded or separated from the solar panel, thereby preventing damage caused by strong winds.

In addition, the reflective structure for a solar cell according to the present invention is easily deformed into various shapes because a reflective layer (reflective film) capable of reflecting sunlight is formed on the fabric. In addition, the reflective structure for a solar cell according to the present invention is significantly lighter than the conventional reflective structure for a solar cell and uses a fabric that can be flexibly deformed by an external force as a support material. have sufficient strength to

The reflective structure for solar cells according to the present invention can be installed, stored, or moved through a detachable means such as a roll type, a folding curtain type, or Velcro, so that handling convenience can be remarkably improved. Accordingly, without being limited to a location, it can be used to increase the amount of power generation of the solar cell through the improvement of the amount of incident sunlight.

1 is a perspective view of a reflective structure for a solar cell according to a first embodiment of the present invention.

2 is a perspective view of a reflective plate constituting the reflective structure for a solar cell according to the first embodiment of the present invention, and a cradle on which the reflective plate is mounted.

3 is a plan view of a reflective structure for a solar cell according to a first embodiment of the present invention.

4 is a view showing the rear surface (opposite side of the reflective surface) of the reflective structure for a solar cell according to the first embodiment of the present invention, (a) is a partially folded state, (b) is a fully unfolded state of the reflector will be.

5 shows a state in which the angle of the reflective structure for a solar cell according to the first embodiment of the present invention is adjusted.

6 is a schematic diagram of a wind pressure response device installed in a reflective structure for a solar cell according to a second embodiment of the present invention.

7 is an operation flowchart of a wind pressure response device installed in a reflective structure for a solar cell according to a second embodiment of the present invention.

8 is a perspective view of a reflective structure for a solar cell according to a third embodiment of the present invention.

9 is an exploded perspective view of a reflective structure for a solar cell according to a third embodiment of the present invention.

10 shows a reflective structure for a solar cell according to a third embodiment of the present invention, wherein (a) is a fully unfolded state of the reflector, and (b) is a fully folded state of the reflector.

11 is a view showing the front and rear surfaces of the removable reflector assembly in the reflective structure for a solar cell according to a fourth embodiment of the present invention;

12 is a view illustrating a process in which the removable reflector assembly is inserted into and separated from the cradle in the reflective structure for a solar cell according to the fourth embodiment of the present invention.

13 schematically shows a structure of a flexible reflector constituting a reflective structure for a solar cell according to a fifth embodiment of the present invention.

Fig. 14 (a) shows a reflective structure for a detachable solar cell according to a fifth embodiment of the present invention, and Fig. 14 (b) shows a state in which the reflective structure for a detachable solar cell is attached to the cradle.

Fig. 15 (a) shows a state in which the reflective structure for a hanging type solar cell according to the sixth embodiment of the present invention is unfolded, and Fig. 15 (b) shows a state in which the reflective structure for a solar cell is wound.

Figure 16 (a) shows a state in which the passive roll-type reflective structure for a solar cell according to the seventh embodiment of the present invention is unfolded, and Fig. 16 (b) shows a state in which the reflective structure for a solar cell is wound.

17 is a cross-sectional view in a state in which a passive roll-type reflective structure for solar cells according to the seventh embodiment is wound.

18 (a) shows a state in which the electric roll-type reflective structure for a solar cell according to an eighth embodiment of the present invention is unfolded, and FIG. 18 (b) shows a state in which the reflective structure for a solar cell is wound.

19 is an exploded view of the electric roll part constituting the electric roll-type reflective structure for solar cells according to the eighth embodiment of the present invention.

20 (a) shows a state in which the folding curtain-type reflective structure for a solar cell according to the ninth embodiment of the present invention is unfolded, and FIG. 20 (b) shows a state in which the reflective structure for a solar cell is wound.

Hereinafter, the configuration and operation of the embodiment of the present invention will be described with reference to the accompanying drawings.

In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, when a part "includes" a certain component, this means that other components may be further included rather than excluding other components unless otherwise stated.

[First embodiment]

1 is a reflective structure for a solar cell according to a first embodiment of the present invention, and FIG. 2 is a perspective view of a reflective plate constituting the reflective structure for a solar cell according to the first embodiment of the present invention, and a cradle on which the reflective plate is mounted, FIG. 3 is a plan view of a reflective structure for a solar cell according to a first embodiment of the present invention, and FIG. 4 is a rear view (opposite side of the reflective surface) of the reflective structure for a solar cell according to the first embodiment of the present invention, (a ) shows a state in which the reflector is partially folded, (b) shows a state in which the reflector is fully unfolded, and FIG. 5 shows a state in which the angle of the reflective structure for a solar cell according to the first embodiment of the present invention is adjusted.

1 to 5 , the reflective structure 100 for a solar cell according to the first embodiment of the present invention includes a cradle 110 and a solar cell panel in contact with or adjacent to the solar cell panel to receive the incident sunlight. A reflector assembly 120 including one or more reflectors reflecting the light-receiving surface of the battery panel, and a fixture 130 in which one side is fixed to the cradle 110 and the other end is fixed to the reflector assembly 120; It comprises two rails 140 fixed to the fixture 130 , and a driving device 150 for driving folding and unfolding operations of the reflector assembly 120 .

The cradle 110 extends a predetermined length in the longitudinal direction and has a substantially rectangular cross section, and the cradle 110 may be fixed to land, a building, or various structures.

The reflection plate assembly 120 includes a plurality of reflection plates 121 . The plurality of reflective plates 121 are connected to the adjacent reflective plates 121 by a connecting means such as a hinge so that they can be folded to each other.

In addition, a first support rod 122 that is fixed while extending horizontally along the upper end of the reflecting plate 121 is formed on the upper portion of the plurality of reflecting plates 121 connected so as to be foldable, and the lower portion of the plurality of reflecting plates 121 is A second support rod 123 that is fixed while extending horizontally along the lower end of the reflection plate 121 is formed, and the third support rod 123 is connected to the first support rod 122 and the second support rod 123 across the reflection plate assembly. The support rod 124 is fastened. In addition, a reflective plate fixing part 125 to be slidably fixed to the rail 140 is formed at both ends of some of the plurality of reflective plates 121 .

At both ends of the first support rod 122 and the reflecting plate fixing part 125, sliding parts 125a made of wheels having a wheel shape or a rotatable structure are formed. In addition, a ring-shaped guide portion 126 for guiding the third support rod 124 is formed at the boundary between the reflection plates on which the reflection plate fixing portion 125 is formed, and the third support rod 124 is the guide portion ( 126) is extended through the first support rod 122 while being guided and extended.

On the other hand, in the first embodiment of the present invention, the third support rod 124 is described as a rod, but as shown, it is possible to perform the folding operation of the reflecting plate 121 through an external force such as a wire. include

The fixture 130 includes a holder fixing part 131 having a lower surface fixed to the holder 110 and a hinge portion formed on one side, and a rail fixing part 132 rotatably fastened to the holder fixing part 131 . is made including The rail fixing part 132 is rotated when a predetermined or more external force is applied, so that the installation angle of the reflector assembly 120 can be easily adjusted. Two of the fixtures 130 are installed to be spaced apart from each other by a predetermined distance on the cradle 110 .

The rail fixing part 132 has a substantially circular arc shape with one side open, and an end of the open part is elastically deformed so that the rail 140 can be inserted and separated.

The rail 140 has a substantially concave rail portion 141 formed therein so that the sliding portion 125a formed in the first support rod 122 and the reflecting plate fixing portion 125 can slide therein.

The driving device 150 includes a motor, and at the output end of the motor, an operation of winding or unwinding the wire constituting the third support rod 124 through the rotational force of the driving motor in the up and down directions (eg For example, it is rotated by the motor on both sides of the outer side of the third support rod 124 and can be driven up and down through wheels having a large friction force).

On the other hand, in the embodiment of the present invention, folding and unfolding operations of the reflector assembly 120 are performed through the driving device 150, but a person manually operates the third support rod 124 without a driving device to perform folding and unfolding operations. Of course, you can make it unfold.

In the reflective structure 100 for a solar cell as described above, when the third support rod 124 is raised upward, the first support rod 122 moves upward along the rail 140, so that the reflection plates are spread (Fig. 4 ( a) see). When fully unfolded, the third support rod 124 is fixed in that state to maintain the state in which the reflector is unfolded.

If the wind blows strongly to fold the reflector assembly 120 , the third support rod 124 may be lowered downward, and if necessary, the partially folded state (refer to FIG. 4(b) ) may be maintained.

In addition, as shown in FIG. 5 , the rail 140 can be rotated at a predetermined angle through a hinge formed in the holder fixing part 131 , and accordingly, the installation angle of the reflector 121 coupled to the rail 140 . is variously regulated.

Meanwhile, in the first embodiment of the present invention, a case in which the reflector is folded downward is described, but on the contrary, it is also possible to fold it while raising it upward. In addition, when the reflector is vertically folded and a mixed method such as horizontal and vertical folding is applied, it can be extended and applied.

[Second embodiment]

6 is a schematic diagram of a wind pressure response device installed on a reflective structure for a solar cell according to a second embodiment of the present invention, and FIG. 7 is an operation of the wind pressure response device installed on a reflective structure for a solar cell according to the second embodiment of the present invention It is a flow chart. In the second embodiment of the present invention, the same structures as in the first embodiment will be described with the same reference numerals.

The reflective structure 200 for a solar cell according to the second embodiment of the present invention is such that when a strong wind blows in the reflective structure 100 for a solar cell of the first embodiment and there is a need to fold the reflective plate, the reflective plate can be automatically folded. There is a difference in that the wind pressure response device 260 is further provided.

As shown in FIG. 6 , the wind pressure response device 260 includes a wind pressure sensor 261 that detects wind pressure around the reflector assembly 120 and a drive for mechanically driving the third support rod 124 . It comprises a control unit 262 for generating a control signal for the device 150, and a power supply unit 263 for providing power thereto.

The wind pressure sensor 261 is a sensor that detects wind pressure and generates an electrical signal, and the result measured by the wind pressure sensor 261 is sent to the control unit 262 . The wind pressure sensor 261 applies a general sensor such as a pressure transmitter or a load cell as a pressure sensor, and the diaphragm is deformed according to the pressure load, and the output of the strain gauge coupled thereto increases in proportion to the load, so this output voltage is used to signal processing will proceed. In the strain gauge, the length of the resistance increases or decreases by the deformation of the diaphragm. A change in the length of the resistor is indicated by a change in the resistance value, and when power is applied to the power terminal by configuring it as a Wheatstone bridge circuit, a voltage output of mV appears due to the pressure.

The control unit 262 is a device including means capable of calculation, and after determining the necessity of folding or unfolding driving of the reflector based on the signal from the wind pressure sensor 261, a necessary control signal is transmitted to the driving device ( 150) to perform the role of sending. The control unit 262 transmits a control signal to the driving device 150 so that the reflector is folded when a differential pressure exceeding the voltage output from the wind pressure sensor 261 is detected compared to the reference voltage. When the control signal is received, the driving device 150 operates a motor to move the central support of the reflector downward to fold the reflector. On the other hand, when the output voltage of the wind pressure sensor does not reach the reference voltage, it indicates that the wind pressure is in the normal range, and the driving device 150 operates a motor to move the central support of the reflector upward to unfold the reflector and generate solar power in a normal state. will be done

The power supply unit 263 is for supplying energy required for the driving device 150 , the wind pressure sensor 261 , the control unit 262 , and the like, and may use a battery or an external power source.

On the other hand, the wind pressure response device 260 according to the present invention is installed separately from the solar cell reflective structure 100 according to the first embodiment, or of the solar cell reflective structure 100 according to the first embodiment, for example. , it may be installed inside the same structure as the cradle 110 .

The wind pressure response device 260 as described above operates in the same flow as shown in FIG. 7 .

First, when power is supplied, the wind pressure sensor 261 detects wind pressure and transmits a detection signal to the controller 262 .

The controller 262 determines whether the sensed wind pressure is equal to or greater than a reference voltage (reference wind pressure).

When the detection signal is equal to or greater than the reference voltage, the control unit 262 determines whether the reflector is in a folded state, and if the reflector is not folded, transmits the reflector folding driving signal to the driving device 150 so that the folding driving is performed. In addition, if the reflector is in a folded state, the step of checking whether the detection signal is less than the reference voltage is performed.

When the detection signal is less than the reference voltage, the control unit 262 determines whether the reflector is in an unfolded state, and if the reflector is not unfolded, transmits the reflector unfolding driving signal to the driving device 150 so that the unfolding driving is performed. In addition, if the reflector is unfolded, it is determined whether there is a driving stop command.

If there is no command to stop operation, it goes back to the wind pressure detection step and the above steps are repeated.

Through the above process, the reflector can be folded or unfolded according to the wind pressure. That is, the wind pressure sensor detects the pressure of the air toward the reflector, and when the air resistance increases due to factors such as typhoons or storms while the reflective photovoltaic power generation is operating, the reflector is folded when the preset pressure is exceeded. Thus, it is possible to prevent damage to the solar cell panel by the reflector and the reflector.

On the other hand, as a control method of the wind pressure response device 260, a central control method and a distributed control method are possible. The central control method is a method in which the central control center measures wind pressure, wirelessly transmits a control signal to the driving device of each reflector, and receives the control signal from each reflector to simultaneously operate the individual reflectors. The transmission frequency of the control signal used in the central control method may be 433 MHz, and the reception frequency may be 125 kHz.

In addition, the distributed control method is a method in which an individual wind pressure sensor and a control unit are installed for each reflective structure, and each reflective structure is operated independently. In addition, in the distributed control method, it may be preferable to use a battery as a power source for the control device including each wind pressure sensor.

[Third embodiment]

8 is a perspective view of a reflective structure for a solar cell according to a third embodiment of the present invention, FIG. 9 is an exploded perspective view of a reflective structure for a solar cell according to a third embodiment of the present invention, and FIG. 10 is a third embodiment of the present invention As a reflection structure for a solar cell according to an example, (a) is a state in which the reflector is fully unfolded, and (b) is a state in which the reflector is fully folded.

The reflective structure 300 for a solar cell according to the third embodiment is different from the first embodiment in that it includes a support 340 that can extend and contract in the longitudinal direction instead of the rail 140 . Hereinafter, only configurations different from those of the first embodiment will be described.

8 to 10, the support 340 has the same center and the diameter intermittently decreases upwardly through a multi-pipe (two or more pipes) in which a plurality of pipes are fitted. There is a characteristic of this being possible.

The first support bar 322 of the reflector assembly 320 is fixed to the upper end of the support 340, and the reflector 321 of the reflector assembly 320 is connected at a predetermined interval in the middle of the support 240, A second support rod 323 of the reflective plate assembly 320 is fixed to the lower end of the support 340 . The reflector plate fixing parts 325 formed at both ends of the reflector 321 are connected to the support 340 to the connecting part 341 formed for each pipe, and the reflector assembly 320 to the support 340 is foldable. connected

In addition, the handle 324 is formed on the upper side of the middle of the first support rod 322, so that the user can easily open and fold the reflecting plate manually.

In the reflective structure 300 for solar cells according to the third embodiment as described above, when the user holds the handle 324 and raises the first support rod 322 upward, the pipe inserted into the supporter 340 is multiplied to the outside. As the projecting extension extends, the length of the support 340 is increased and the reflector is spread out. When fully unfolded, the first support rod 322 is fixed in that state to maintain the state in which the reflector is unfolded (refer to FIG. 10(a)).

When the reflector assembly 320 is folded, when the user holds the handle 324 and applies a downward force, a pipe protruding and extending to the outside is inserted and the length of the support 340 is reduced, so that the reflector is folded (Fig. b) see).

On the other hand, the reflective structure 300 for a solar cell according to the third embodiment includes the driving device of the first embodiment, and the driving device is connected to the third support rod 324 , so that the reflective plate 321 of the reflective plate assembly 320 is provided. can be automatically folded or unfolded.

[Fourth embodiment]

11 is a view showing the front and rear surfaces of the removable reflector assembly in the reflective structure for a solar cell according to a fourth embodiment of the present invention, and FIG. 12 is a reflective structure for a solar cell according to the fourth embodiment of the present invention, a removable reflector assembly It is a diagram showing the process of being inserted and separated from the cradle.

The reflective structure 400 for a solar cell according to the fourth embodiment of the present invention is different from the first embodiment in that the reflective plate assembly 420 is formed to be fixed rather than foldable.

The reflection plate assembly 420 includes a plurality of horizontal support rods 422 and a plurality of vertical support rods 423 that connect and support the plurality of reflection plates 421 and the plurality of reflection plates 421 . In particular, the vertical support rods 423 are essentially disposed at both ends of the plurality of reflection plates 421 in the vertical direction. A ring-shaped handle 424 for facilitating detachment of the reflector assembly 420 is formed on the upper surface of the plurality of reflectors 421 .

In addition, at one side of the rail 440 , a slot 441 for fastening the vertical support rods 423 disposed in the longitudinal direction of the plurality of reflective plates 421 in a slot manner is formed.

That is, the reflective plate assembly 420 is detached in such a way that it is inserted into and separated from the slot 441 formed in the rail 440 .

On the other hand, in the fourth embodiment of the present invention, the method using the rail 440 is presented, but the rail fixing part 432 of the fixture 430 is directly connected to the reflector plate assembly 420 without using the rail 440 . Desorption can also be made in a way that inserts and separates into the.

In the case of such a removable reflector, when the wind pressure is weaker than the reference value, photovoltaic power is generated while the reflector is attached. By separating the reflector from the angle adjustment fixture, stability can be improved.

In addition, when the reflector assembly is separated, the angle adjustment fixture may be separated together.

[Fifth embodiment]

13 schematically shows a structure of a flexible reflector constituting a reflective structure for a solar cell according to a fifth embodiment of the present invention, and FIG. 14 (a) is a reflective structure for a detachable solar cell according to a fifth embodiment of the present invention. is shown, and FIG. 14(b) shows a state in which the reflective structure for a detachable solar cell is attached to the cradle.

13 and 14, the reflective structure 1100 for a detachable solar cell according to the fifth embodiment includes a flexible reflector 1110 and a detachable means 1120 formed on the flexible reflector 1110. .

The flexible reflector 1110 is, as shown in FIG. 13, a fabric 1111, a resin film 1112 formed on the fabric 1111, and a reflective layer formed on the resin film 1112 ( 1113) and a protective layer 1114 formed on the reflective layer.

The fabric 1111 is preferably made of a woven or non-woven fabric. The fabric 111 physically supports the reflective film made of the resin film 1112 on which the reflective layer 1113 is formed, thereby preventing the resin film 1112 from being easily deformed or damaged by an external force. .

In consideration of impact resistance, etc., the fabric is most preferable, but instead of the fabric, a flexible polymer film having a thickness of 5 mm or less, or non-metallic and metallic materials such as paper and thin-film stainless steel may also be used.

The resin film 1112 is to form a reflective layer while alleviating surface irregularities of the fabric, preferably polyethylene terephthalate (PET), polyvinyl carbonate (PVC), polycarbonate (PC) having a thickness of 0.1 to 3 mm. ) may be made of a film made of the same resin. The resin film 1112 is not particularly limited as long as it can be adhered to the fabric 1111 and can be manufactured in the form of a film. The resin film 1112 may be adhered to the fabric 1111 using an adhesive or an adhesive.

The reflective layer 1113 is a layer that is formed on the resin film 1112 to form a mirror surface capable of reflecting sunlight, and may be formed by various methods. For example, it may be formed through a method such as vacuum deposition of a metal material such as aluminum to a thickness of 10 μm or less, or a method such as applying a pigment (pigment) having an aluminum purity of 99.5% or more by a spray method.

The protective layer 1114 is formed for waterproofing and/or dustproofing to prevent the reflective layer 1113 from being damaged or deteriorated by contaminants such as water and dust, and may be formed of a transparent resin. For example, silicone or urethane resin can be formed by using a solvent such as isonucleic acid and ethyl alcohol to prepare a coating solution and then spraying. However, it is not necessarily limited to the above method, and as long as it is a coating layer that can function for waterproofing and/or dustproofing, it may be formed in any shape.

The detachable means 1120 is a means used to attach or detach the flexible reflector 1110 to a required position. It goes without saying that various types of known attachment and detachment means such as fastening holes or Velcro may be used.

For example, as shown in FIG. 14 , attachment and detachment may be performed through a fastening hole 1121 having a locking part formed therein near four vertices of the flexible reflector 1110 . As shown in FIG. 14 , when the flexible reflector 1110 having the fastening hole 1121 formed thereon is inserted in a required position on the cradle having the protrusions 1122 formed with a plurality of locking parts, the flexible reflector 1110 is It is fixed to the cradle, and when the flexible reflector is not required, the flexible reflector 1110 is detached simply by separating the fastening hole 1121 from the protrusion 1122 . Since the separated flexible reflector 1110 is fabric-based, it is possible to store and transport several sheets after stacking or rolling them to reduce the volume.

[Sixth embodiment]

Next, a sixth embodiment of the present invention will be described. Since the flexible reflector in the sixth embodiment is the same as that of the fifth embodiment, a description of the structure thereof will be omitted.

Referring to FIG. 15 , the reflective structure 1200 for a solar cell according to the sixth embodiment includes a flexible reflector 1210 and a winding roll 1220 for winding the flexible reflector 1210 , and a cradle for the winding roll 1220 . It comprises a first fixing means 1230 for fixing to the back, and a second fixing means 1240 for fixing the other end of the flexible reflector 1210 .

The flexible reflector 1210 has the same structure as that of the fifth embodiment.

The winding roll 1220 has a rod shape extending in the longitudinal direction, and preferably has a cylindrical shape so that the flexible reflector 1210 can be easily wound and unwound.

The first fixing means 1230 is a bracket connected to a portion that does not interfere with the rotation of the winding roll 1220, and a hole is formed inside the bracket to be inserted into a wall or a protrusion protruding from the cradle. have.

The second fixing means 1240 includes a fixing member 1241 fixed to the lower end of the flexible reflector 1210 and a bracket 1242 attached to one side of the fixing member 1241, the bracket 1242 A hole is formed inside the wall or a protrusion that can be inserted into the cradle.

In the sixth embodiment of the present invention, it is fixed using a hole formed in the bracket, but it goes without saying that various fixing means such as fixing tabs and screws or Velcro can be used.

The reflective structure 1200 for a hanging type solar cell according to the sixth embodiment of the present invention is used after unwinding and fixing the flexible reflector 1210 wound on the winding roll 1220 by hand for use, and the use is terminated. When storing or carrying it afterward, the flexible reflector 1210 is wound around the winding roll 1220 by hand, and storage is performed.

[Seventh embodiment]

Figure 16 (a) shows a state in which the passive roll-type reflective structure for a solar cell according to the seventh embodiment of the present invention is unfolded, Fig. 16 (b) shows a state in which the reflective structure for a solar cell is wound, and Figure 17 is It is a cross-sectional view in a state in which the passive roll-type reflective structure for solar cells according to the seventh embodiment is wound.

Referring to FIG. 16 , the reflective structure 1300 for a solar cell according to the seventh embodiment includes a flexible reflector 1310 , a winding roll 1320 for winding the flexible reflector 1310 , and the winding roll 1320 . A housing 1330 for accommodating it, and a cradle 1340 installed on at least one of both ends of the housing 1330 as a limb support means, and a support 1350 for rotatably fixing the cradle 1340. is done

The flexible reflector 1310 has the same structure as that of the seventh embodiment, and a holder 1311 for fixing the flexible reflector 1310 is attached to the lower end thereof.

17 , the winding roll 1320 is disposed inside the housing 1330 and includes a tube 1321 extending in the longitudinal direction, and a helical spring 1322 disposed inside the tube 1321 . ) and a flange 1323 that covers both ends of the pipe 1321 and is rotatably coupled to the pipe 1321 . One end of the helical spring 1322 is fixed to the tube 1321 , and the other end of the helical spring 1322 is fixed to the flange 1323 . Only one helical spring 1322 may be disposed, or may be disposed at both ends of the tube 1321, respectively. The helical spring 1322 provides an elastic restoring force to return to the original shape after the winding roll 1320 is rotated.

The housing 1330 may accommodate the winding roll 1320 therein, and an opening 1331 is formed on one side long in the longitudinal direction so that the flexible reflector 1310 can be unwound and the winding operation can be made. shape, and both ends thereof are rotatably supported with the winding roll 1320 .

The holder 1340 includes two support rods 1341 and is formed near the upper and lower ends of the support rod 1341 , and a locking portion 1342 for mounting the flange 1323 and the fixing rod 1311 . is formed.

The support 1350 is for rotatably supporting the two support rods 1341 constituting the support 1340, a first support 1351 extending approximately parallel to the ground, and the first support ( 1351 is disposed protruding from both ends and includes a rotation fixture 1352 for rotatably fixing the two support rods 1341 .

When the reflective structure 1300 for a passive roll type solar cell according to the third embodiment of the present invention is in use, hold the holder 1311 of the flexible reflector 1310 wound on the winding roll 1320 by hand and hold it down. When pulling and hooking both ends of the holder 1311 to the locking part 1342 , the flexible reflector 1310 is fixed in an unfolded state.

When the solar cell reflective structure 1300 is not used, if both ends of the fixture 1311 hung on the hook portion 1342 are not caught, the winding roll 1320 by the elastic restoring force of the helical spring 1322. It is rolled up to be accommodated inside the housing 1330 . After storage, if the flange 1323 of the take-up roll 1320 is separated from the locking part 1342 formed on the upper part, it becomes easy to carry.

As described above, when the flexible reflector in the form of a roll is used, the convenience of the user can be improved because it is easy to attach and detach the reflector, store, store, carry, and install the reflector.

[Eighth embodiment]

18 (a) shows a state in which the electric roll-type reflective structure for solar cells according to an eighth embodiment of the present invention is unfolded, and FIG. 18 (b) shows a state in which the reflective structure for a solar cell is wound, FIG. It is an exploded view of the electric roll part constituting the electric roll-type reflective structure for solar cells according to the eighth embodiment of the present invention.

18 and 19 , in the reflective structure 1400 for a solar cell according to the eighth embodiment, a flexible reflector 1410 and one end of the flexible reflector 1410 are fixed to apply an electric driving force to the flexible reflector 1410 . and an electric winding roll 1420 for performing winding and unwinding operations.

The flexible reflector 1410 has the same structure as that of the fifth embodiment, and a fixing member 1411 for limiting the movement of the end of the flexible reflector 1410 is attached to the lower end.

The electric winding roll 1420 is not particularly limited as long as it can implement the winding and unwinding operations of the flexible reflector 1410 using an electric driving force.

For example, the electric winding roll 1420 includes a cylindrical motor 1421, a drive wheel 1422 coupled to one side of the cylindrical motor, and the cylindrical motor 1421 and the drive wheel 1422. A shaft 1423 accommodated therein, a power connector 1424 disposed at one end of the shaft 1423 to connect an external power source to the cylindrical motor 1421, and the other end of the shaft 1423 and a plug end 1425 to be used, a plug end bracket 1426 for fixing the plug end 1425 , and a motor bracket 1427 for fixing the cylindrical motor 1421 .

When in use, the reflective structure 1400 for a passive roll-type solar cell according to the eighth embodiment of the present invention operates the columnar motor 1421 to loosen the flexible reflector 1410 wound on the shaft 1423, and to use After completion, the flexible reflector 1410 operates in the form of winding the shaft 1423 . In addition, when it is desired to change the installation position of the reflective structure 1400 for solar cells, when the end bracket 1426 and the motor bracket 1427 are separated from the fixed portion, the portable state is obtained.

[Ninth embodiment]

Referring to FIG. 20 , the reflective structure 1500 for a solar cell according to the ninth embodiment includes a flexible reflector 1510 , a first fixing part 1520 for fixing one end of the flexible reflector 1510 , and a flexible reflector A second fixing part 1530 for fixing the other end of the 1510 is included.

The structure of the flexible reflector 1510 is the same as that of the fourth embodiment, but a plurality of folds that can be folded in a zigzag form are formed at a predetermined interval in the longitudinal direction, so that it can be folded in a curtain type. have.

The first fixing unit 1520 includes a band-shaped first holder 1521 fixed to the flexible reflector 1510 and a first fastener fixed to the first holder 1521 to be fastened to another external object. A sphere 1522 is placed.

The second fixing unit 1530 includes a band-shaped second fixing unit 1531 fixed to the flexible reflector 1510 and a second fixing unit fixed to the second fixing unit 1531 to be fastened to another external object. A sphere 1532 is placed.

When the reflective structure 1500 for a passive roll type solar cell according to the ninth embodiment of the present invention is used, the first holder 1521 is fixed at a predetermined position, and then the flexible reflector 1510 is opened in a second state It is sufficient to fix the fixing table 1522 .

After the use is completed, if the first fixing base 1521 and the second fixing table 1522 are released from the fixing positions, respectively, and the flexible reflector 1510 is folded, it becomes a state of being easy to carry.

[Explanation of code]

100: reflective structure for solar cells

110: cradle

120: reflector assembly

130: fixture

140: rail

150: driving device

1100, 1200, 1300, 1400, 1500: reflective structure for solar cells

1110, 1210, 1310, 1410, 1510: flexible reflector

Claims

A reflective structure for a solar cell, comprising a reflector disposed on at least one side of the solar cell panel to reflect sunlight to the solar cell panel.
The method of claim 1,

a reflector assembly including one or more of the reflectors;

a cradle for mounting the reflector assembly;

While one side is fixed to the cradle, a reflective structure for a solar cell comprising a fixture for fixing one side of the reflection plate assembly so that an angle of inclination of the reflection plate assembly with respect to the solar cell panel can be adjusted.
3. The method of claim 2,

The reflective plate assembly includes two or more reflective plates, and the two or more reflective plates are connected to adjacent reflective plates so as to be foldable with each other, a reflective structure for a solar cell.
4. The method of claim 3,

Two rails fixed to the fixture at a predetermined distance on both sides of the reflector assembly to enable adjustment of the installation angle;

a first support rod fixed to one end of the reflector assembly;

a second support rod fixed to the other end of the reflection plate assembly located on the cradle side;

Further comprising a third support rod connected to the first support rod and the second support rod across the reflection plate assembly,

Both ends of the first support rod are slidably connected to the rail,

At least one end of the second support rod is fixed to the rail,

A reflective structure for a solar cell, wherein a folding or unfolding operation of the reflective plates constituting the reflective plate assembly is performed by sliding of the first support rod.
4. The method of claim 3,

Two supports capable of adjusting the installation angle to the fixture at a predetermined distance on both sides of the reflective plate assembly and at the same time adjustable in length;

a first support rod fixed to one end of the reflector assembly;

a second support rod fixed to the other end of the reflection plate assembly located on the cradle side;

Further comprising a third support rod connected to the first support rod and the second support rod across the reflection plate assembly,

At least one end of the first support rod is fixed to the support,

At least one end of the second support rod is fixed to the support,

By adjusting the length of the support, the folding or unfolding operation of the reflectors constituting the reflector assembly is made, a reflective structure for a solar cell.
5. The method of claim 4,

The rail is further formed with a depression for accommodating the ends of the first support rod and the second support rod,

A reflective structure for a solar cell, wherein the reflective plate assembly is attached to and detached from the rail through a method of inserting or separating the ends of the first support rod and the second support rod into the depression.
6. The method according to claim 4 or 5,

Further comprising a driving device connected to one side of the reflector assembly,

A reflective structure for a solar cell, wherein a folding or unfolding operation of the reflective plates constituting the reflective plate assembly is performed by the driving device.
8. The method of claim 7,

The driving device is connected to the third support rod, and by driving the third support rod forward or backward, folding or unfolding of the reflection plates constituting the reflection plate assembly is performed.
8. The method of claim 7,

Further comprising a wind pressure response device around the reflector assembly,

The wind pressure response device,

A wind pressure sensor that detects wind pressure and generates an electrical signal;

A control unit for generating a control signal of the driving device based on the electrical signal of the wind pressure sensor,

Based on a predetermined wind pressure sensed by the wind pressure sensor, the control unit controls the driving device to fold or unfold the driving device, a reflective structure for a solar cell.
10. The method of claim 9,

determining, by the control unit, whether the output voltage of the wind pressure sensor exceeds or falls below a reference voltage;

transmitting, by the control unit, a folding driving control signal to the driving device when the reference voltage is exceeded;

A reflective structure for a solar cell is driven by a driving device receiving the folding driving control signal to perform a folding operation of the reflective plates constituting the reflective plate assembly.
10. The method of claim 9,

determining, by the control unit, whether the output voltage of the wind pressure sensor exceeds or falls below a reference voltage;

transmitting, by the controller, an unfolding driving control signal to the driving device when the reference voltage is less than the reference voltage;

The reflective structure for a solar cell is driven by a driving device receiving the unfolding driving control signal to perform an unfolding operation of the reflectors constituting the reflector assembly.
8. The method of claim 7,

The driving device further comprises a wireless transceiver for receiving a control signal,

In a central control center having a wind pressure sensor that detects the wind pressure around the reflector and generates an electrical signal, and a control unit that generates a control signal of the driving device based on the electrical signal of the wind pressure sensor, wirelessly to the driving device A reflective structure for a solar cell, which transmits a control signal to drive the driving device.
3. The method of claim 2,

The reflective plate assembly is detachably fixed to the fixture, a reflective structure for a solar cell.
According to any one of claims 2 to 6, 13,

A reflective structure for a solar cell in which a handle for handling the reflective plate assembly is formed at an upper end of the reflective plate assembly.
The method of claim 1,

The reflective plate is formed of a flexible reflector including a reflective film. Reflective structures for solar cells.
16. The method of claim 15,

The flexible reflector,

A fabric of a predetermined thickness made of fibers, and

a reflective film attached to one side of the fabric;

A reflective structure for a solar cell, comprising a protective layer formed on the reflective film.
17. The method of claim 16,

The reflective film is

a resin film;

A reflective structure for a solar cell comprising a reflective layer formed on the resin film.
16. The method of claim 15,

The flexible reflector extends in the longitudinal direction,

a winding roll on which the flexible reflector is wound;

a housing accommodating the winding roll therein;

The reflective structure for a solar cell, further comprising a support means installed on at least one of both ends of the housing to rotatably support the take-up roll.
19. The method of claim 18,

A reflective structure for a solar cell, further comprising a driving means for rotationally driving the winding roll.
16. The method of claim 15,

Each of a first holder supporting one end of the flexible reflector and a second holder supporting the other end of the flexible reflector opposite to the one end, respectively,

The flexible reflector is formed to be foldable at a predetermined interval, and includes folding or unfolding of the flexible reflector through movement of either one or both of the first and second fixtures.
16. The method of claim 15,

The flexible reflector further comprises a detachable means for attaching and detaching to a predetermined support means, a reflective structure for a solar cell.
16. The method of claim 15,

a support for supporting the flexible reflector;

a cradle for holding the support;

A reflective structure for a solar cell, further comprising a fixing means for fixing the support to the holder.
18. The method of claim 17,

The reflective layer is formed of a metal or non-metal thin film, a reflective structure for a solar cell.
18. The method of claim 17,

The resin film,

A reflective structure for a solar cell formed of at least one selected from polyethylene terephthalate (PET), polyvinyl carbonate (PVC) and polycarbonate (PC).