阅读说明：本技术 光伏电池模块 (Photovoltaic cell module ) 是由 田永权 于 2020-02-24 设计创作，主要内容包括：本发明涉及一种光伏电池模块的结构,其能够通过增加受光面积和日照持续时间来改善发电输出。光伏电池模块包括诸如单晶硅/多晶硅或砷化镓(GaAs)之类的晶体光伏电池以及碲化镉(CdTe)、铜铟镓硒(CIGS)/铜铟硒(CIS)或燃料敏感的薄膜光伏电池。根据本发明的光伏电池模块包括支撑单元和安装在支撑单元上的多个光伏电池单元模块,并且具有朝向表面以预定形状弯曲的突出形状。(The present invention relates to a structure of a photovoltaic cell module capable of improving power generation output by increasing a light receiving area and a sunshine duration. Photovoltaic cell modules include crystalline photovoltaic cells such as single crystal silicon/polycrystalline silicon or gallium arsenide (GaAs) and cadmium telluride (CdTe), Copper Indium Gallium Selenide (CIGS)/Copper Indium Selenide (CIS) or fuel sensitive thin film photovoltaic cells. The photovoltaic cell module according to the present invention includes a support unit and a plurality of photovoltaic cell modules mounted on the support unit, and has a protruding shape bent in a predetermined shape toward a surface.)

1. A photovoltaic cell module comprising at least two unit modules,

wherein each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and

the power generation is performed in a state where the self shape of the unit modules or the arrangement shape of two or more unit modules forms an uneven portion on the incident surface on which sunlight is incident.

2. The photovoltaic cell module of claim 1, further comprising a support unit on which the unit modules are mounted,

wherein the supporting unit includes: at least one upright fixed to the ground or a building; a support secured to a post; and a holder configured to form an uneven shape on the support,

the unit modules include a plate-like shape, and

the at least two unit modules are mounted on the holder to form an uneven portion on an incident surface on which sunlight is incident.

3. The photovoltaic cell module of claim 2, wherein each of the at least two unit modules has a rectangular shape in which a length in one direction is twice a length in the other direction.

4. The photovoltaic cell module of claim 2, wherein the retainer has the shape of a rod extending in a longitudinal direction, and the cross-section of the rod has a polygonal, semi-circular, or semi-elliptical shape.

5. The photovoltaic cell module of claim 1, wherein the unit module comprises a flexible photovoltaic cell, and

the flexible photovoltaic cell is molded to form an uneven portion on an incident surface on which sunlight is incident.

6. The photovoltaic cell module of claim 1, wherein the unit modules are arranged in different orientations such that height and direction can be adjusted.

7. The photovoltaic cell module of claim 1, wherein the unit modules comprise at least two types having different protrusion shapes and/or different heights.

8. The photovoltaic cell module according to claim 2, wherein the support unit has a curved shape having a predetermined radius, and

the at least two unit modules form a shape protruding toward a surface on the supporting unit to be curved in a predetermined shape, and the uneven shape overlaps with the curved shape of the supporting unit.

9. The photovoltaic cell module according to claim 2, wherein the unit modules are mounted to form an uneven portion including an embossed shape on the support unit.

10. The photovoltaic cell module according to claim 1, wherein the unit module includes a plurality of uneven portions including embossed shapes.

11. A photovoltaic cell module comprising at least two unit modules,

wherein each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode,

a connection unit configured to connect the at least two unit modules is disposed between the at least two unit modules,

the connection unit allows the unit modules to be folded while adjusting and fixing the folding angle, and

the power generation is performed in a state where the at least two unit modules face each other at a predetermined angle by means of the connection unit to form an uneven portion on an incident surface on which sunlight is incident.

12. The photovoltaic cell module according to claim 11, wherein the unit modules have a diagonal angle in the range of 30 ° to 330 °, and a gap between the unit modules is equal to or less than a width of the unit modules.

13. The photovoltaic cell module of claim 11, wherein the connection unit comprises: a shaft; a connecting member rotatably connected to the shaft; and a fixed connector coupled with one side of the connection member, the fixed connector being configured to connect adjacent unit modules to adjust and fix a folding angle between the unit modules, and

the unit modules are rotatably connected to the shaft when one or both sides of each of the unit modules are connected to the connection member.

14. The photovoltaic cell module of claim 13, wherein the fixed connector comprises: a main body; a first fixing member connected to the main body and fixed to one end of the unit module; and a second fixing member fixed to one end of the unit module connected adjacent to the unit module fixed to the first fixing member, and

adjusting a folding angle between the unit modules by adjusting an angle between the first fixing member and the second fixing member.

15. The photovoltaic cell module of claim 13, wherein the fixed connector comprises: a main body; a first fixing member connected to the main body and fixed to one end of the unit module; and a second fixing member fixed to one end of the unit module connected adjacent to the unit module fixed to the first fixing member,

one or both sides of each of the first and second fixing members are rotatably connected to the body, and

when an angle adjustment unit configured to fix the first fixing member or the second fixing member rotatably connected is provided, an angle between the first fixing member and the second fixing member is adjusted by means of the first fixing member, the second fixing member, and the angle adjustment unit.

16. The photovoltaic cell module of claim 13, wherein the fixed connector comprises: a drive unit; a first fixing member fixed to one end of the unit module; and a second fixing member fixed to one end of the unit module connected adjacent to the unit module fixed to the first fixing member, and

the driving unit rotates one or both sides of each of the first and second fixing members to adjust an angle between the first and second fixing members.

17. The photovoltaic cell module of claim 11, further comprising:

a support configured to support at least one of the at least two unit modules; and

a fixing unit configured to fix the unit modules on the support.

18. The photovoltaic cell module of claim 11, wherein the at least two unit modules are separated or coupled from each other.

19. A photovoltaic cell module comprising at least two unit modules,

wherein each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and

power generation is performed in a state where an uneven portion is formed on an incident surface on which sunlight is incident by including:

a unit module connecting unit configured to connect the at least two unit modules with adjacent unit modules in a bendable manner; and

a unit module spacing unit coupled to the unit modules and configured to adjust and fix a bending angle and a distance between a plurality of the unit modules when the unit modules are bent.

20. The photovoltaic cell module according to claim 19, further comprising a holding unit configured to hold the unit module spacing unit.

21. The photovoltaic cell module of claim 19, wherein the unit module spacing unit comprises:

a plurality of support bars spaced apart from each other by a predetermined distance;

at least one spacing member configured to adjust a gap between the plurality of support rods; and

at least one securing member configured to maintain a gap adjusted by the at least one spacing member,

wherein the unit modules are coupled to the plurality of support bars in a bendable manner.

22. The photovoltaic cell module of claim 20, wherein the retaining unit comprises:

a lower support disposed at a lower portion;

at least two inclined supports rotatably connected to adjust an inclination with respect to the lower support and spaced apart from each other by a predetermined distance;

an upper support configured to connect the at least two inclined supports to each other; and

an inclination angle adjusting unit configured to adjust an inclination angle by connecting the lower support and the inclined support.

23. The photovoltaic cell module of claim 19, wherein the unit modules are connected to the unit module spacing unit by means of elastic bands, velcro, or clamps.

24. The photovoltaic cell module according to claim 19, wherein a bending angle between the unit module and an adjacent unit module is in a range of 0 ° to 360 °, and a gap between the unit modules is equal to or less than twice a width of the unit module.

25. The photovoltaic cell module of claim 19, wherein the unit module comprises a single cell or a plurality of cells connected in series or parallel with each other.

26. The photovoltaic cell module of claim 21, wherein the spacing member is a spring and the securing member is a clip disposed at each of two ends of the spring.

27. The photovoltaic cell module of claim 22, wherein the length of the angled support is adjustable.

28. The photovoltaic cell module of claim 19, wherein the unit module spacing unit comprises:

a plurality of support plates; and

a connection unit configured to rotatably connect the plurality of support plates such that the plurality of support plates are folded with each other,

wherein the plurality of photovoltaic cell unit modules are respectively attached to the plurality of support plates.

29. The photovoltaic cell module according to claim 19, wherein the unit module connection unit comprises a mechanical rotation unit configured to connect the plurality of photovoltaic cell modules in a mechanically bendable manner, or the unit module connection unit comprises a member having bending flexibility due to material properties without a separate mechanical unit.

30. A photovoltaic cell module comprising at least two unit modules,

wherein each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and

the power generation is performed in a state where the at least two unit modules are arranged to form uneven portions facing each other on an incident surface on which sunlight is incident.

31. The photovoltaic cell module of claim 30, wherein adjacent unit modules are arranged to have a V-shape, a W-shape, or a repeating shape thereof.

32. The photovoltaic cell module of claim 30, wherein adjacent unit modules are arranged to have a U-shape or a repeated shape thereof with respect to incident light.

33. The photovoltaic cell module of claim 30, wherein the interior angle between adjacent unit modules is in the range of 120 ° to 40 °.

34. A photovoltaic cell module comprising a reflective plate and at least two unit modules,

wherein each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and

when the at least two unit modules are arranged to form uneven portions facing each other at a predetermined angle on an incident surface on which sunlight is incident and the reflection plate is connected to at least a portion of an end of the photovoltaic cell panel and extends for a predetermined length, power generation is performed in a state in which the uneven portions are formed on the incident surface on which the sunlight is incident.

35. The photovoltaic cell module of claim 34, wherein the predetermined angle is adjustable within a range greater than 0 ° and less than 180 °.

36. The photovoltaic cell module of claim 34, wherein a surface of the reflector plate extends without a stepped portion from a surface of the photovoltaic cell panel.

37. The photovoltaic cell module of claim 34, wherein the reflector plate extends from all open ends of the photovoltaic cell panel.

38. A photovoltaic cell module including a unit module and a reflective plate,

wherein the unit module includes at least one photovoltaic cell including a light absorbing layer and an electrode,

the reflection plate includes a first reflection plate connected to one end of the unit module and inclined at a predetermined angle with respect to an incident surface of sunlight of the unit module, and a second reflection plate connected to the other end, the second reflection plate being disposed at an opposite side of the unit module and inclined at a predetermined angle with respect to an incident surface of sunlight of the photovoltaic cell panel, and

when the first reflection plate and the second reflection plate are arranged to face each other, power generation is performed in a state where an uneven portion is formed on an incident surface on which sunlight is incident.

39. The photovoltaic cell module of claim 38, wherein an interior angle between the first and second reflective plates facing each other is in a range of 40 ° to 120 °.

40. The photovoltaic cell module of claim 38, wherein each of the first and second reflective plates has a width that is greater than one and equal to or less than three times a lateral width of the photovoltaic cell panel and a length that is equal to or less than one times a longitudinal length of the photovoltaic cell panel.

41. A photovoltaic cell module including a unit module and a reflective plate,

wherein the unit module includes at least one photovoltaic cell including a light absorbing layer and an electrode, and

when the reflection plates are inclined to face each other at a predetermined angle with respect to the unit modules, power generation is performed in a state where an uneven portion is formed on an incident surface on which sunlight is incident.

42. The photovoltaic cell module of claim 41, wherein the reflector plate is tilted at a predetermined angle with respect to at least two unit photovoltaic cell panels.

43. The photovoltaic cell module of claim 41 or 42, wherein said predetermined angle is in the range from 40 ° to 120 °.

44. The photovoltaic cell module of any of claims 34, 38 and 41, wherein the reflector plate has an area equal to or greater than one times the area of the photovoltaic cell panel.

45. The photovoltaic cell module of any of claims 34, 38 and 41, wherein a surface of said reflector plate comprises a metal mirror, a glass mirror, or a plastic mirror.

46. The photovoltaic cell module of any of claims 34, 38 and 41, wherein said reflective plate comprises a transparent substrate and a light reflective material attached to said transparent substrate.

47. The photovoltaic cell module of any of claims 34, 38 and 41, wherein the substrate of the reflector plate comprises an insulating material.

48. The photovoltaic cell module of any of claims 34, 38 and 41, wherein the reflector plate comprises at least one aperture through which wind passes.

49. The photovoltaic cell module of claim 48, wherein the shape of the aperture is selected from the group consisting of circular, triangular, rectangular, polygonal, cross-shaped, and any shape.

50. The photovoltaic cell module of any of claims 34, 38 and 41, wherein a thermoelectric element is attached to the unit module or the reflector plate.

51. The photovoltaic cell module of any of claims 34, 38 and 41, wherein a phase change material is attached to the cell module or the reflector plate.

52. The photovoltaic cell module according to any one of claims 34, 38 and 41, further comprising a holder configured to hold the unit modules and the reflection plate and to adjust a facing angle between the unit modules or a facing angle between the unit modules and the reflection plate.

Technical Field

The present invention relates to a photovoltaic cell module capable of improving the power generation output per unit area in which the photovoltaic cell module is mounted, as compared with a typical photovoltaic cell module. Photovoltaic cell modules include crystalline photovoltaic cells such as single crystal silicon, polycrystalline silicon, and gallium arsenide (GaAs) as well as cadmium telluride (CdTe), Copper Indium Gallium Selenide (CIGS)/Copper Indium Selenide (CIS) and fuel sensitive thin film photovoltaic cells.

Background

Crystalline and thin film photovoltaic cell technology is a clean energy source that can replace typical sources of electrical energy. Although continuously distributed, this technology is limited in commercialization due to the high cost of power generation units compared to typical methods such as coal-fired power generation and nuclear power generation. Among them, the crystal occupying the largest market share at presentCompared with bulk silicon photovoltaic cells, thin film photovoltaic cells are a new generation of photovoltaic cell technology. Various thin film photovoltaic cells have been developed, and a representative example is CIGS (Cu (In, Ga) Se₂) Or CIS (CuInSe)₂) A photovoltaic cell. The CIGS/CIS photovoltaic cell is a cell in which a light absorbing layer for absorbing sunlight is made of CIGS or CIS in a general cell having a laminated structure of a glass substrate/a ground electrode/a light absorbing layer/a buffer layer/a front transparent electrode. CIGS is more widely used for the light absorbing layer. CIGS is a I-III-VI family chalcopyrite compound semiconductor. CIGS are of the direct transition bandgap and have about 1X 105cm in the semiconductor^-1Of a relatively high light absorption coefficient. CIGS is a material capable of producing high efficiency photovoltaic cells even with a thickness of 1 to 2 μm. However, crystalline and thin film photovoltaic cells also exhibit less than 30% power generation efficiency. Therefore, in order to increase the power generation amount, more installation area is required, thereby increasing installation costs.

On the other hand, a photovoltaic cell module currently used is mounted in an array form by fixing and connecting a plurality of unit panels each having a plate shape.

Regarding the array structure, korean laid-open utility model No. 2018 and 0002627 disclose a structure that is convenient for a user to carry and store by mounting a flat photovoltaic cell on a bamboo sheet template or a substrate and rolling up the photovoltaic cell to be received. Since the structure is constructed by connecting adjacent two photovoltaic cells in series using a copper tape or bar, repeated use and storage may cause bending and folding, thereby causing damage to connection parts such as electric wires.

Furthermore, korean laid-open utility model No. 2017-0003830 discloses a method of protecting photovoltaic cell modules from external impact or wind pressure such that a pair of two photovoltaic cell modules are formed into a folding-type structure, the two modules are connected by a hinge, and when folded, one module is folded over the other module to expose the rear surface of the upper module to incident light. However, since the folding type module includes only two modules, and the adjacent photovoltaic cell modules are used as the module

Round carpet (round rugs) of cross-bolts are connected, so the structure can only be used for flat type.

In addition, in the case where a photovoltaic cell module manufactured by connecting a plurality of unit cells in series and/or parallel is to be arranged in a large-area flat type, a large output may not be generated in a narrow space, reflected light reflected by each unit cell may not be re-absorbed, and transmission and storage may be inconvenient. In order to solve the above-mentioned limitations, korean registered patent No. 10-1730562 discloses a structure for easily assembling and disassembling a unit module of a photovoltaic cell module, but does not disclose a structure for improving power generation efficiency of the same installation area and increasing re-absorbed reflected light.

Disclosure of Invention

Technical problem

The present invention provides a photovoltaic cell module capable of performing efficient and economical photovoltaic cell power generation by increasing the amount of power generation per installation area and/or per photovoltaic cell panel as compared to a typical flat module.

The present invention also provides a photovoltaic cell module that can be disassembled into module units (or unit modules) such that the photovoltaic cell module is folded for transfer and storage.

Technical scheme

The present invention provides a plurality of embodiments as described below to solve the above technical limitations.

A first embodiment of the present invention provides a photovoltaic cell module including at least two unit modules. Here, each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and generates power in a state where an uneven portion is formed on an incident surface on which sunlight is incident by its own shape or an arrangement shape of two or more unit modules.

In the first embodiment, the photovoltaic cell module may further include a supporting unit on which the unit modules are mounted. Here, the supporting unit may include: at least one upright fixed to the ground or a building; a support fixed to the upright; and a holder configured to form an uneven shape on the support, the unit modules may include a plate shape, and the at least two unit modules may be mounted on the holder to form an uneven portion on an incident surface on which sunlight is incident.

In the first embodiment, each of the at least two unit modules may have a rectangular shape, and a length in one direction is twice as long as a length in the other direction.

In the first embodiment, the holder may have a shape of a rod extending in a longitudinal direction, and a cross section of the rod may have a polygonal, semicircular, or semi-elliptical shape.

In the first embodiment, the unit module may include a flexible photovoltaic cell, and the flexible photovoltaic cell may be molded to form an uneven portion on an incident surface on which sunlight is incident.

In the first embodiment, the unit modules may be arranged in different orientations so that the height and direction can be adjusted.

In the first embodiment, the unit modules may include at least two types having different protrusion shapes and/or different heights.

In the first embodiment, the support unit may have a curved shape having a predetermined radius, and the at least two unit modules may be formed in a shape protruding toward a surface on the support unit to be curved in a predetermined shape, and the uneven shape may overlap the curved shape of the support unit.

In the first embodiment, the unit modules may be installed to form an uneven portion including an embossed shape on the support unit.

In the first embodiment, the unit block may include a plurality of uneven portions including an embossed shape.

A second embodiment of the present invention provides a photovoltaic cell module including at least two unit modules. Here, each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, a connection unit configured to connect the at least two unit modules is disposed between the at least two unit modules, the connection unit allows the unit modules to be folded while adjusting and fixing a folding angle, and power generation is performed in a state in which the at least two unit modules face each other at a predetermined angle by means of the connection unit to form an uneven portion on an incident surface on which sunlight is incident.

In the second embodiment, the facing angle of the unit modules may be in the range of 30 ° to 330 °, and the gap between the unit modules may be equal to or less than the width of the unit modules.

In the second embodiment, the connection unit may include: a shaft; a connecting member rotatably connected to the shaft; and a fixed connector coupled with one side of the connection member, the fixed connector being configured to connect adjacent unit modules to adjust and fix a folding angle between the unit modules, and the unit modules being rotatably connected to the shaft when one or both sides of each of the unit modules are connected to the connection member.

In a second embodiment, the fixed connector may include: a main body; a first fixing member connected to the main body and fixed to one end of the unit module; and a second fixing member fixed to one end of the unit module connected adjacent to the unit module fixed to the first fixing member, and the folding angle between the unit modules may be adjusted by adjusting an angle between the first fixing member and the second fixing member.

In a second embodiment, the fixed connector may include: a main body; a first fixing member connected to the main body and fixed to one end of the unit module; and a second fixing member fixed to one end of a unit module connected adjacent to the unit module fixed to the first fixing member, one or both sides of each of the first and second fixing members being rotatably connected to the main body, and when an angle adjusting unit configured to fix the rotatably connected first or second fixing members is provided, an angle between the first and second fixing members may be adjusted by means of the first and second fixing members and the angle adjusting unit.

In a second embodiment, the fixed connector may include: a drive unit; a first fixing member fixed to one end of the unit module; and a second fixing member fixed to one end of a unit module connected adjacent to the unit module fixed to the first fixing member, and the driving unit may rotate one or both sides of each of the first and second fixing members to adjust an angle between the first and second fixing members.

In a second embodiment, the photovoltaic cell module may further include: a support configured to support at least one of the at least two unit modules; and a fixing unit configured to fix the unit modules on the support.

In the second embodiment, the at least two unit modules may be separated from or coupled to each other.

A third embodiment of the present invention provides a photovoltaic cell module including at least two unit modules. Here, each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and generates power in a state where an uneven portion is formed on an incident surface on which sunlight is incident by including: a unit module connecting unit configured to connect at least two unit modules with adjacent unit modules in a bendable manner; and a unit module spacing unit coupled to the unit modules and configured to adjust and fix a bending angle and a distance between a plurality of the unit modules when the unit modules are bent.

In the third embodiment, the photovoltaic cell module may further include a holding unit configured to hold the unit module spacing unit.

In a third embodiment, the spacing unit may include: a plurality of support bars spaced apart from each other by a predetermined distance; at least one spacing member configured to adjust a gap between the plurality of support rods; and at least one fixing member configured to maintain a gap adjusted by the at least one spacing member, and the unit modules may be bendably coupled to the plurality of support rods.

In the third embodiment, the holding unit may include: a lower support disposed at the lower portion; at least two inclined supports rotatably connected to adjust an inclination with respect to the lower support and spaced apart from each other by a predetermined distance; an upper support configured to connect the at least two inclined supports to each other; and a tilt angle adjusting unit configured to adjust a tilt angle by connecting the lower support and the tilt support.

In a third embodiment, the cell modules may be connected to the spacer cells by means of elastic bands, Velcro (Velcro) or clamps.

In the third embodiment, the bending angle between the unit module and an adjacent unit module may be in the range of 0 ° to 360 °, and the gap between the unit modules may be equal to or less than twice the width of the unit module.

In the third embodiment, the unit module may include a single battery or a plurality of batteries connected in series or parallel with each other.

In the third embodiment, the spacing member may be a spring, and the fixing member may be a jig disposed at each of both ends of the spring.

In a third embodiment, the length of the inclined support may be adjustable.

In the third embodiment, the unit module spacing unit may include: a plurality of support plates; and a connection unit configured to rotatably connect the plurality of support plates such that the plurality of support plates are folded over each other and the plurality of photovoltaic cell modules are respectively attached to the plurality of support plates.

In the third embodiment, the unit module connection unit may include a mechanical rotation unit configured to mechanically bendably connect the plurality of photovoltaic cell unit modules, or include a member having bending flexibility due to material properties without a separate mechanical unit.

A fourth embodiment of the present invention provides a photovoltaic cell module including at least two unit modules. Here, each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and generates power in a state where the at least two unit modules are arranged to form uneven portions facing each other on an incident surface on which sunlight is incident.

In the fourth embodiment, the adjacent unit modules may be arranged to have a V-shape, a W-shape, or a repeated shape thereof.

In the fourth embodiment, the adjacent unit modules may be arranged to have a U-shape or a repeated shape thereof with respect to the incident light.

In the fourth embodiment, the internal angle between the adjacent unit modules may be in the range of 120 ° to 40 °.

A fifth embodiment of the present invention provides a photovoltaic cell module including a reflective plate and at least two unit modules. Here, each of the unit modules includes at least one photovoltaic cell including a light absorbing layer and an electrode, and when the at least two unit modules are arranged to form uneven portions facing each other at a predetermined angle on an incident surface on which sunlight is incident and the reflection plate is connected to at least a portion of an end of the photovoltaic cell panel and extends a predetermined length, power generation is performed in a state in which the uneven portions are formed on the incident surface on which the sunlight is incident.

In the fifth embodiment, the predetermined angle may be adjustable within a range greater than 0 ° and less than 180 °.

In the fifth embodiment, the surface of the reflection plate may extend without forming a stepped portion with the surface of the photovoltaic cell panel.

In a fifth embodiment, the reflector plate may extend from all open ends of the photovoltaic cell panel.

In a fifth embodiment, a photovoltaic cell module may include a unit module and a reflective plate. Here, the unit module may include at least one photovoltaic cell including a light absorbing layer and an electrode, the reflection plate may include a first reflection plate connected to one end of the unit module and inclined at a predetermined angle with respect to an incident surface of sunlight of the unit module, and a second reflection plate connected to the other end, the second reflection plate being disposed at an opposite side of the unit module and inclined at a predetermined angle with respect to an incident surface of sunlight of the photovoltaic cell panel, and when the first reflection plate and the second reflection plate are disposed to face each other, power generation may be performed in a state in which an uneven portion is formed on the incident surface of sunlight.

In the fifth embodiment, an inner angle between the first reflection plate and the second reflection plate facing each other may be in a range of 40 ° to 120 °.

In the fifth embodiment, each of the first and second reflection plates may have a width greater than one time and equal to or less than three times a lateral width of the photovoltaic cell panel, and a length equal to or less than one time a longitudinal length of the photovoltaic cell panel.

A sixth embodiment of the present invention provides a photovoltaic cell module including a unit module and a reflective plate. Here, the unit module includes at least one photovoltaic cell including a light absorbing layer and an electrode, and when the reflection plates are inclined to face each other at a predetermined angle with respect to the unit module, power generation is performed in a state where an uneven portion is formed on an incident surface on which sunlight is incident.

In the sixth embodiment, the reflective plate may be inclined at a predetermined angle with respect to at least two unit photovoltaic cell panels.

In the sixth embodiment, the predetermined angle may be in a range from 40 ° to 120 °.

In the fifth or sixth embodiment, the area of the reflective plate may be equal to or greater than one time the area of the photovoltaic cell panel.

In the fifth or sixth embodiment, the surface of the reflection plate may include a metal mirror, a glass mirror, or a plastic mirror.

In the fifth or sixth embodiment, the reflective plate may include a transparent substrate and a light reflective material attached on the transparent substrate.

In the fifth or sixth embodiment, the substrate of the reflective plate may include an insulating material.

In the fifth or sixth embodiment, the reflection plate may include at least one hole through which the wind passes. Further, the shape of the hole may be selected from the group consisting of a circle, a triangle, a rectangle, a polygon, a cross, and an arbitrary shape.

In the fifth or sixth embodiment, a thermoelectric element may be attached to the unit module or the reflection plate.

In the fifth or sixth embodiment, a phase change material may be attached to the unit module or the reflection plate.

In the fifth or sixth embodiment, the photovoltaic cell module may further include a holder configured to hold the unit modules and the reflection plate and to adjust a facing angle between the unit modules or a facing angle between the unit modules and the reflection plate.

In an embodiment, a photovoltaic cell including an electrode (or a ground electrode) and a light absorbing layer may be applied to the unit module.

Advantageous effects

The photovoltaic cell module according to the present invention increases the amount of power generation per unit area because the light receiving area and the amount of solar radiation are increased compared to a typical flat module installed obliquely although the amount of solar radiation and the duration of sunshine are the same as each other.

In addition, when the unit modules include the bent portions, the shadow between the unit modules may be reduced, and thus the mounting gap may also be reduced. In particular, when the unit module includes a thin film photovoltaic cell having an uneven portion or includes a protruding cell by using a flexible thin silicon photovoltaic cell, the light receiving area may be further increased.

In addition, in the case of a structure in which a plurality of separated unit modules are foldably coupled by means of a connection unit, since the unit modules are connected in a screen shape, it is possible to increase the amount of solar radiation by adjusting the folding gap and the direction among the left and right directions. Further, since the unit modules can be connected in a coupling method at the time of use and can be disassembled to be separated and stored at the time of storage or transfer, maintenance can be easily performed.

Furthermore, since sunlight reflected by the reflective plate or an adjacent photovoltaic cell panel can be re-absorbed in addition to sunlight directly incident to the panel by various arrangements between the photovoltaic cell panel and the reflective plate, photovoltaic cell power generation can be efficiently and economically performed.

Drawings

Fig. 1 is a view showing a configuration in which a structure of a rectangular unit module according to a first embodiment of the present invention is applied as a module including a bent portion.

Fig. 2 is a diagram illustrating a method of using a flexible photovoltaic cell as a method of obtaining a curved surface effect by using a flat support.

Fig. 3 is a view illustrating a thin-film photovoltaic cell manufactured on a flexible substrate including a plurality of uneven portions by an embossing process and a unit module including the same.

Fig. 4 is a view illustrating a thin film photovoltaic cell manufactured on a flexible substrate including a plurality of uneven portions having a semi-cylindrical shape, and a unit module including the same.

Fig. 5 is a schematic diagram for comparing the effective incident angle of sunlight in a photovoltaic cell module including a flat photovoltaic cell module and a photovoltaic cell module including a curved protrusion as an embodiment of the present invention.

Fig. 6 is a schematic diagram for comparing light receiving areas of photovoltaic cell modules including bent or curved protrusions as an embodiment of the present invention.

Fig. 7 is a view showing a configuration of applying a structure of a rectangular unit module as a coupling type module according to a fifth embodiment of the present invention.

Fig. 8 is a view illustrating a rotary connecting apparatus connecting two unit modules according to a fifth embodiment of the present invention.

Fig. 9 is a view illustrating each of the fixing connectors for fixing the direction of the adjacent unit modules according to the fifth embodiment of the present invention.

Fig. 10 is a view illustrating a fixed connector for variously adjusting a folding angle of a unit module according to a sixth embodiment of the present invention.

Fig. 11 is a view illustrating a fixed connector for adjusting a folding angle of a unit module by means of a motor according to a seventh embodiment of the present invention.

Fig. 12 is a view showing a state in which a coupling type module according to an eighth embodiment of the present invention is mounted on supports having various bent shapes.

Fig. 13 is a view illustrating a fixing device for attaching the unit module to the support.

Fig. 14 is a perspective view illustrating a photovoltaic cell module according to a ninth embodiment of the present invention.

Fig. 15 is an enlarged perspective view illustrating a unit module spacing unit of fig. 14.

Fig. 16 is a front view and a side view illustrating a unit module holding unit of the photovoltaic cell module of fig. 14.

Fig. 17 is a view exemplarily showing a mounting shape of a photovoltaic cell module according to a ninth embodiment of the present invention.

Fig. 18 is a diagram illustrating a state in which a photovoltaic cell module according to the present invention is mounted with respect to incident light.

Fig. 19 is a view showing a state in which unit modules connected in a bendable manner according to the tenth embodiment of the present invention are attached to each surface of a bending case or a support as a photovoltaic cell module.

Fig. 20 is a schematic view illustrating a photovoltaic cell module according to an eleventh embodiment of the present invention.

Fig. 21 is a side sectional view illustrating a photovoltaic cell module according to an eleventh embodiment of the present invention.

Fig. 22 is a view showing an assembly process of a panel and a reflective plate in a photovoltaic cell module according to an eleventh embodiment of the present invention.

Fig. 23 is a schematic view showing a photovoltaic cell module according to a twelfth embodiment of the present invention.

Fig. 24 is a schematic view showing a photovoltaic cell module according to a thirteenth embodiment of the present invention.

Fig. 25 is a side sectional view showing a photovoltaic cell module according to a thirteenth embodiment of the present invention.

Fig. 26 is a view showing an assembly process of a panel and a reflection plate in a photovoltaic cell module according to a thirteenth embodiment of the present invention.

Fig. 27 is a side sectional view showing a photovoltaic cell module according to a fourteenth embodiment of the present invention.

Fig. 28 is a side sectional view showing a photovoltaic cell module according to a fifteenth embodiment of the present invention.

Fig. 29 is a plan view illustrating a photovoltaic cell module according to a sixteenth embodiment of the present invention.

Fig. 30 is a side view showing a photovoltaic cell module according to a seventeenth embodiment of the present invention.

Fig. 31 is a side view illustrating a photovoltaic cell module according to an eighteenth embodiment of the present invention.

Detailed Description

Hereinafter, configurations and effects of embodiments of the present invention will be described with reference to the drawings.

Detailed descriptions related to well-known functions or constructions are excluded so as not to unnecessarily obscure the subject matter of the present invention. Further, when it is described that one includes (or includes or has) some elements, it is to be understood that it may include (or include or have) only those elements, or it may include (or include or have) other elements and those elements if there is no particular limitation.

[ embodiment 1]

The configuration of the module according to the first embodiment of the present invention will be described with reference to (a) to (c) of fig. 1.

Fig. 1 (a) is a view showing a configuration of a module in which a plurality of rectangular unit modules are mounted on a support including a bent portion having a triangular tube shape at an upper portion thereof.

The support member including the triangular protrusion is constructed at an installation site such as a plain, a slope, a roof, an outdoor facility, or a public house. The support member includes a post supported by the floor or wall surface and a support member connected to the post and including a triangular projection. The photovoltaic cell module is mounted on the surface of the triangular protrusion.

As shown in (a) of fig. 1, the photovoltaic cell unit module is configured such that a plurality of photovoltaic cells are arranged in a line, and surface electrodes and back electrodes of cells adjacent to each other are electrically connected to form a series or parallel connection. The unit module is manufactured according to a typical method in the following manner: the tempered glass, the photovoltaic cell, the sealing material, and the back sheet are sequentially overlapped with each other, the sealing material is pressed and heated to bond and seal the respective layers, and then the edge of the tempered glass is fixed and finished by means of a metal material (e.g., aluminum) or a plastic reinforcing frame. Therefore, since a plurality of photovoltaic cells are aligned in a line and have a thickness of about 7mm, a lightweight photovoltaic cell module can be realized.

On the other hand, when the half cell is applied, since the internal current is reduced and the cell gap is narrowed to reduce the resistance loss, the power output is increased and the temperature-dependent performance is enhanced. Also, since effects such as reduction of the shadow effect of the output and reduction of the possibility of hot spot generation are obtained, the rectangular unit module can be more than twice as long in the long direction than in the short direction by embodying the effects.

Fig. 1 (b) is a view showing a configuration of a module in which a plurality of rectangular unit modules are mounted on a support including a plurality of bent portions such as semicircular protrusions at an upper portion thereof.

The support includes a column supported by the ground or wall surface and a plurality of supports connected to the column to support the plurality of flexures. The photovoltaic cell unit module includes a plurality of unit modules coupled with the bent portion to form the protrusion.

Fig. 1 (c) is a view showing a configuration of a module including a bent portion in which a bent portion having a predetermined size is alternately arranged with another bent portion having a size smaller than that of the bent portion having the predetermined size.

That is, fig. 1 (c) shows the following case: the photovoltaic cell module is constructed by mounting the photovoltaic cell module on a support including a first curved portion having an upper portion of a predetermined curved shape such as a convex plate and a second curved portion having a curvature or shape smaller in size than the convex plate.

The photovoltaic cell module in (c) of fig. 1 may have a structure in which a support member of a large curvature overlaps a unit module of a small curvature mounted on the support member to further increase the sunshine area.

Although the bent portion of the support has a triangular or semicircular shape in the above embodiments, embodiments of the present invention are not limited thereto. For example, the curved portion of the support member may have various shapes other than a triangular or semicircular shape, such as a cylindrical shape having a shape obtained by cutting a polygonal, circular, or elliptical shape.

Further, the size of the bent portion of the support member may have a diameter of 10cm to 10m, a bottom side of 10cm to 10m, and a height of 2cm to 5m from the bottom side. Each support including the bent portion and the frame may be made of metal such as aluminum alloy or stainless steel or plastic.

As described above, when a plurality of rectangular photovoltaic cell modules are installed to have different orientations, the amount of power generation can be improved more than a typical flat installation method despite the difference in solar altitude because the light receiving area and the sunshine duration are increased. In addition, because of the reduction in weight of the unit modules, management of the entire module, such as installation and maintenance, can be easily performed.

[ embodiment 2]

Fig. 2 is a diagram illustrating a method of using a flexible photovoltaic cell that can obtain a curved surface effect by using a typical flat support.

Flexible photovoltaic cells include thin silicon photovoltaic cells and thin film photovoltaic cells. That is, since the conventionally generally used silicon photovoltaic cell has a wafer thickness of about 180 μm, the silicon photovoltaic cell is insufficient in flexibility and elasticity and thus is easily broken during bending. However, when a thin film silicon cell is applied, the wafer thickness can be reduced to 100 μm or less, and flexibility and elasticity can be increased. Therefore, the bending equal to or more than 60 ° can be performed.

The thin film photovoltaic cell can be manufactured by using a metal substrate such as a polymer sheet or a stainless steel sheet as a substrate to easily deform the shape of the cell.

Therefore, when a thin film photovoltaic cell using a thin film silicon photovoltaic cell or a flexible substrate is applied, the cell itself may be deformed to have flexibility. Therefore, the same effect of increasing the amount of solar radiation as in fig. 1 can be obtained by appropriate bending.

Here, the bending angle may be in the range of 30 ° to 90 °, and the module substrates may be manufactured and attached to have the same bending angle.

In addition, when a thin film photovoltaic cell is manufactured by using a flexible substrate, a plurality of minute uneven portions may be formed on the substrate to further increase the surface area.

[ embodiment 3]

Fig. 3 is a view illustrating a thin-film photovoltaic cell manufactured on a flexible substrate including a plurality of uneven portions by an embossing process and a unit module including the same.

The embossing processing method includes a method of forming a plurality of uneven portions on a surface of a substrate by using an apparatus for processing embossing on a surface of a polymer sheet such as polyimide or a metal sheet such as a stainless steel sheet, a copper sheet, and a zinc sheet. The embossing treatment process can generally be carried out in the following manner: a flexible substrate is inserted between and through the upper and lower embossing rollers, and embossments or embossments formed on the outer circumferential surface of the roller are transferred to the substrate by applying heat or pressure to form a plurality of uneven portions. In addition, the embossing processing method includes laser patterning, hot foil stamping, and punching methods.

In the embossing process, the size of the uneven portion may be in the range of 10 μm to 1 cm.

[ embodiment 4]

Fig. 4 is a view illustrating a thin film photovoltaic cell manufactured on a flexible substrate including a plurality of uneven portions having a semi-cylindrical shape, and a unit module including the same. When the battery is applied to a module, a case where the longitudinal portions of the half cylinders are arranged in a direction perpendicular to the longitudinal portions of the rectangular module and a case where the longitudinal portions of the half cylinders are arranged in a horizontal direction are shown.

A method of processing the semi-cylinder is the same as that of embodiment 3 except that the uneven portion has a semi-cylinder shape.

The diameter or base dimension of the semi-cylindrical shape may be in the range of 10 μm to 1 cm.

Fig. 5 shows that when the installation angle θ of the support of the module to the ground is 0 ° < θ < 90 °, the flat support has a sunlight incidence range from 0 ° to (180- θ) °, and although the bent portion has an arbitrary curvature (90 ° < θ' <180- θ °), the support including the bent portion has an increased sunlight incidence range from 0 ° to 180 °.

Fig. 6 shows that the curved portion having the cross-sectional shape of a regular triangle or a semi-cylindrical shape has a light receiving surface area increased by the circumferential area of the pillar as compared with the flat plate. The ratio of the circumferential area of the regular triangle to the bottom surface is 2DL/DL (the former is twice as large as the latter), and the ratio of the circumferential area of the semicircular shape to the bottom surface is π RL/2RL (the former is π/2 times as large as the latter).

That is, when the photovoltaic cell or the module is constructed or installed to have a curved portion, the amount of solar radiation or the amount of power generation is improved by increasing the incident angle range of sunlight and the effective light receiving area as compared with a typical flat module.

[ embodiment 5]

The configuration of a photovoltaic cell module according to a fifth embodiment of the present invention will be described with reference to fig. 7 to 9.

As shown, the photovoltaic cell module according to the fifth embodiment includes: a plurality of unit modules 10; a connection unit 20 connecting the unit modules 10 to each other; and a fixing connector 30 fixing the unit modules by adjusting a folding angle between the unit modules.

Each unit module 10 has a rectangular shape including a serial or parallel wiring 12 by electrically connecting surface electrodes and ground electrodes of unit cells adjacent to each other when a plurality of photovoltaic cell units 11 are arranged.

The unit module 10 is manufactured according to a typical method in the following manner: the tempered glass, the photovoltaic cell, the sealing material, and the back sheet are sequentially overlapped with each other, the sealing material is pressed and heated to bond and seal the respective layers, and then the edge of the tempered glass is fixed and finished with a metal material (e.g., aluminum) or a plastic reinforcing frame. Therefore, since the photovoltaic cells are aligned in a line and have a thickness of about 7mm, a lightweight photovoltaic cell module can be realized.

On the other hand, when the half cell is applied, since the internal current is reduced and the cell gap is narrowed to reduce the resistance loss, the power output is increased and the temperature-dependent performance is enhanced. Also, since effects such as reduction of the shadow effect of the output and reduction of the possibility of hot spot generation are obtained, the length of the rectangular unit module for a long distance can be more than twice the length of the short distance by embodying the effects.

Further, the unit module may be configured such that the number of units arranged at one end in the short direction is 1 to 6 and the number of units arranged at one end in the long direction is 2 to 12, preferably, the number of units at one end in the short direction is 1 to 2 and the number of units at one end in the long direction is 2 to 12.

As shown in fig. 8, the connection unit 20 includes: a shaft 21 having a generally cylindrical shape (including a rod or tube shape); and two hinge members 22 rotatably coupled. An insertion groove 23 is defined in the other ends of the two hinge members 22, which are not coupled to the shaft 21, and one end of the unit module 10 is inserted into and coupled to the insertion groove 23. Further, screw coupling holes 24 allowing screws to be coupled are formed at upper and lower portions of the surface of the hinge member 22 where the insertion groove 23 is formed, respectively. Accordingly, one end of the unit module 10 is inserted into the insertion groove 23, and then the unit module 10 is rotatably fixed to the shaft 21 by means of the bolt and nut 25 coupled through the threaded coupling hole 24.

When the unit modules 10 are coupled to only one side of the shaft 21, only one hinge member 22 may be formed. In addition, one hinge member 22 may fix one unit module 10, or a plurality of hinge members 22 may fix one unit module 10.

As shown in (a) of fig. 9, the fixed connector 30 includes a shaft fixing member 31 and two module fixing members 32, the shaft fixing member 31 having a cylindrical shape to be inserted to an upper end of the shaft 21, and the shaft fixing member 31 having an inner diameter larger than an outer diameter of the shaft 21, the two module fixing members 32 being connected to the shaft fixing member 31.

When the fixing groove 33, into which at least a portion of the upper end of the unit module 10 is inserted to be fixed, is formed in the module fixing member 32, the upper end of the unit module 10 may be inserted into the fixing groove 33 to maintain the unit module 10 at a predetermined angle, as shown in (b) of fig. 9.

The two module fixing members 32 in fig. 9 are integrated with the outer cylindrical portion of the shaft fixing member 31 at a predetermined angle (fixed angle) in a non-rotatable manner.

Since the folding angle between the unit modules 10 has a fixed angle ranging from 0 ° to 360 °, the direction and the gap between the unit modules can be further securely maintained. Preferably, when the fixed angle is in the range of 30 ° to 330 °, the orientation angle between the unit modules may be in the range of 30 ° to 330 °, and when the gap between the unit modules is equal to or less than the width of the unit modules, more photovoltaic cells may be arranged in a narrow area.

In the fifth embodiment of the present invention, the folding angle between the unit modules is adjusted by the angle between the module fixing members integrated with the shaft fixing member 31.

[ embodiment 6]

Unlike the fifth embodiment, the sixth embodiment of the present invention includes a fixed connector capable of adjusting the angle between the unit modules 10.

As shown in fig. 10, the fixed connector 30' according to the sixth embodiment includes: a first member 31 'in which a spiral portion 31a' is formed at a middle lower portion and a handle having a circular plate shape is formed at an upper portion; a second member 32 'in which a central portion defines a hole 32a' formed with a spiral portion, an outer circumferential portion is formed with a plurality of catching grooves 32b ', and a lower side defines a fixing groove 32c' extending a predetermined length such that an end of the unit module 10 coupled with the connection unit 20 is fixed at one side; and a third member 33' which is disposed between the first member 31' and the second member 32' and in which a central portion is defined with a coupling hole 33a ' into which the protruding spiral portion 31a ' is inserted, an outer circumferential portion is formed with a plurality of protruding portions 33b ' which are caught by the catching grooves 32b ' of the second member 32', and a lower side is defined with a fixing groove 33c ' which extends a predetermined length such that an end portion of the unit module 10 coupled with the connection unit 20 is fixed at one side.

According to the sixth embodiment, the angle between the second member 32 'and the third member 33' can be adjusted to adjust the angle between the unit modules 10 fixed thereto.

When angular adjustment by using the fixed connector according to the sixth embodiment is required, angular adjustment may be performed such that the second member 32 'and the third member 33' are separated from each other by rotating the first member 31', and then the second member 32' and the third member 33 'are adjusted to a required angle and assembled by using the first member 31'.

As described above, when the angles of the second member 32 'and the third member 33' can be differently adjusted, the folding angle of the photovoltaic cell module can be adjusted according to the area of the installation space, and thus the space can be further effectively utilized, and the degree of freedom of installation can be increased.

[ embodiment 7]

The seventh embodiment of the present invention includes a fixed connector capable of automatically adjusting the angle between the unit modules 10 of the sixth embodiment without separating the fixed connector.

As shown in fig. 11, the fixed connector 30 "according to the seventh embodiment includes: a motor 31 ″, which motor 31 ″ includes a rotating shaft 31a' having an angled cross section of a predetermined shape at one end; a first fixing member 32 "in which a central portion is defined with a coupling groove 32 a" of an angled cross-section accommodating the rotation shaft 31a ", and a lower side is defined with a fixing groove 32 b", the fixing groove 32b "extending a predetermined length such that an end of the unit module 10 coupled with the connection unit 20 is fixed at one side; and a second fixing member 33' disposed between the motor 31' and the first fixing member 32' and in which a central portion is defined with a coupling hole 33a ' into which the rotation shaft 31a ' is inserted and a lower side is defined with a fixing groove 33b ', the fixing groove 33b ' extending a predetermined length such that an end portion of the unit module 10 coupled with the connection unit 20 is fixed at one side of the outer circumferential portion.

When angle adjustment by using the fixed connector according to the seventh embodiment is required, angle adjustment between the unit modules may be performed such that the motor 31 "is operated via a predetermined control signal to rotate the rotating shaft 31 a" to adjust the angle between the first fixing member 32 "and the second fixing member 33".

Here, the motor 31 ″ may be controlled in a wired or wireless manner by using a computer including a computing device and a storage device. When wireless control is required, the motor may include a receiving unit capable of wirelessly receiving the control signal.

Further, when the motor 31 ″ is operated by providing a control signal at every predetermined time based on at least one piece of information selected from the sun altitude angle, sunrise time, and sunset time according to the date stored in the storage means, an optimal folded state at the corresponding time can be obtained.

[ embodiment 8]

An eighth embodiment of the present invention includes a support for mounting the photovoltaic cell module of embodiments 5 to 7.

Fig. 12 (a) is a view showing a state in which a photovoltaic cell module according to the present invention is fixed to a support 40, the support 40 including a first support frame 41 having a bent portion, a pillar supported by a ground or wall surface, and a second support frame 41 supported by the pillar. The support 40 including the bent portion in (a) of fig. 12 has an advantageous structure that allows more photovoltaic cell modules to be arranged in a narrow area such as an apartment doorway.

Fig. 12 (b) is a view showing a state in which the photovoltaic cell module according to the present invention is fixed to the support 50, the support 50 having a shape in which a sectional shape inclined at a predetermined angle is "a" shaped. This structure allows the photovoltaic cell module to be inclined at a predetermined angle in consideration of the incident angle of the sun.

Fig. 12 (c) is a view showing a state in which the photovoltaic cell module according to the present invention is mounted on an inclined roof. When the photovoltaic cell module cannot be directly attached to the inclined roof, a support member inclined at the same or similar angle may be installed on the roof, and then the photovoltaic cell module according to the present invention may be attached.

Fig. 13 is a view showing an embodiment of a fixing device for fixing a photovoltaic cell module according to the present invention to a support. Fig. 13 (a) shows a case where the fixing means is integrated with the frame coupled to the support by means of the screw, and fig. 13 (b) shows a case where the separated fixing means is directly coupled to the support by means of the screw.

When the fixing device is used, the photovoltaic cell module may be easily separated from the support, and when the connection unit is separated, the separated photovoltaic cell module may be separated into the respective unit modules, and the respective unit modules may be stored and carried.

In an embodiment of the present invention, the fixing means may have the same or similar shape as the support member, provided that the support member has a cylindrical or cylindrical shape.

The photovoltaic cell module may be mounted by connecting left and right sides of a plurality of unit modules to obtain a screen shape, thereby improving space efficiency. Also, the amount of solar radiation and the amount of power generation are improved by the effect of increasing the incident angle range of sunlight and the effective light receiving area as compared with a typical flat module. In addition, since the photovoltaic cell module can be disassembled and separated into each unit module, storage, transfer, and maintenance are easily performed.

International photovoltaic module prices and plant facility investment trends of the korean photovoltaic industry association indicate that the proportion of module cost in the entire photovoltaic plant facility cost is reduced to 30% of 2017. Therefore, when the number of panels is increased by twice in the case where the photovoltaic modules are installed in the flat shape in the same installation space of the photovoltaic panels (modules) when the photovoltaic modules are installed in the screen shape, the total power plant facility cost can be increased by 30% due to the panel cost, but the power generation amount can be increased by two times. Therefore, the photovoltaic balance power generation cost (namely the power generation unit cost) can be improved by 54%. Therefore, it can be seen that the screen shape is economically advantageous over the flat shape.

Although the photovoltaic module having the screen shape is exemplified in the embodiment of the present invention, the embodiment of the present invention is not limited thereto. For example, the photovoltaic module may have various shapes other than a flat shape.

[ embodiment 9]

Fig. 14 is a perspective view illustrating a photovoltaic cell module according to a ninth embodiment of the present invention. As shown in fig. 14, a photovoltaic cell module 100 according to a ninth embodiment of the present invention includes: a plurality of photovoltaic cell modules 110; a unit module connection unit 120 connecting a plurality of photovoltaic cell unit modules with adjacent unit modules in a bent manner; a unit module spacing unit 130, the unit module spacing unit 130 adjusting and fixing distances and bending angles between the plurality of photovoltaic cell unit modules when the plurality of unit modules are coupled and bent; and a holding unit 140 for holding the unit module spacing unit 130.

As shown in fig. 14, a plurality of photovoltaic cell unit cells 111 are connected in series or in parallel to form one unit module 110, or a single photovoltaic cell may form one unit module. Although not particularly limited, the unit module 110 may generally have a rectangular shape.

The unit module connection unit 120 may physically connect and bend the adjacent unit modules 110 at the same time. For example, a mechanical rotation unit such as a hinge may be used for mechanically connecting a plurality of photovoltaic cell modules in a bendable manner. Also for example, a method for connecting the unit modules 110 in a bendable manner by arranging a flexible member between two adjacent unit modules 110 and then attaching the ends of the unit modules 110 by using units such as an adhesive, bolts and nuts, and velcro may be used. In addition, wires for connecting electricity generated from the unit modules 110 may be arranged in the unit module connection unit 120.

Fig. 15 is an enlarged perspective view illustrating a unit module spacing unit in fig. 14.

As shown in fig. 14 and 15, the spacing unit 130 includes: a plurality of support rods 131; a spring 132 which is an elastic member for adjusting a gap between the plurality of support rods 131; and a clamp 133 capable of fixing the gap adjusted by the spring 132 and maintaining the gap.

A coupling portion 134 is formed around both ends of each of the plurality of support rods 131, and a coupling hole for coupling the holding unit is formed in the coupling portion 134. Further, the spring 132 is supported by the coupling portion 134. Although the spring is used as the spacing member in the ninth embodiment of the present invention, other types of elastic members may be used in addition to the spring.

Further, two unit modules 110 are disposed in a space defined between the plurality of support rods 131, and ends of the unit modules 110 adjacent to the support rods 131 are connected to the support rods 131 in a bendable manner. Although not particularly limited, the method of connecting the support rods 131 in a bendable manner may be referred to as a preferred embodiment because the unit modules 110 may be easily attached to the spacing unit 130 and easily detached from the spacing unit 130 when an elastic band, velcro, or a clip is used.

For example, as shown in fig. 15, the clamp 133 may be fixed and released by means of elastic force. Although not particularly limited, a structure capable of being fixed and released by the elastic force of the spring 132 may be used.

Fig. 16 is a front view and a side view illustrating a unit module holding unit of the photovoltaic cell module.

As shown, the holding unit 140 includes: a lower support 141 disposed at a lower portion; at least two inclined supporters 142 rotatably connected to the lower supporter 141 to adjust inclination and spaced apart from each other by a predetermined distance; an upper support 143 connecting the at least two inclined supports 142 to each other; and a tilting angle adjusting unit 144 for adjusting the tilting angle by connecting the lower supporter 141 and the tilting supporter 142.

The lower supporter 141 includes: a first lower support 141a arranged parallel to the ground in the figure; and two second lower supporters 141b extending from both ends of the first lower supporter 141a in a direction perpendicular to the ground in the drawing.

The inclined support 142 includes: a first inclined support 142a including two hollow tubes and extending from both ends of the first lower support 141a in a direction perpendicular to the first lower support 141 a; a second inclined support 142b inserted into the first inclined support 142 a; and a height adjusting unit 142c for adjusting the height of the second inclined support 142 b. For example, the height adjusting unit 142c may include a hole defined in a predetermined portion of the first inclined support 142b and a screw inserted into the hole. However, the height adjusting unit 142c may include various well-known units.

The upper support 143 prevents the second inclined support 142b from moving and couples the interval units 142 to each other. The tubular upper support 143 couples the ends of the spacing unit 142 to each other. Although the upper support 143 is connected to both ends of the second inclined support 142b in the embodiment of the present invention, various adjustments may be made to the connection position.

The reclining angle adjusting unit 144 includes: holes 144b spaced apart by a predetermined gap in a longitudinal direction of the first inclined support 142 a; and a support 144a rotatably connected to the second lower support 141 b. By doing so, the inclination may be adjusted according to a position of a hole, in which the support 144a is inserted, among holes defined in the second lower support 141 b. Although the inclination is adjusted by a method of inserting the supporter into the hole in the embodiment of the present invention, the inclination may be adjusted by various known methods, for example, a hydraulic type supporter for adjusting the length of the supporter by means of hydraulic adjustment.

Next, a method for mounting a photovoltaic cell module according to a ninth embodiment of the present invention will be described.

First, the support rod 131 is coupled to the holder unit 140 by inserting the lower supporter 141 and the upper supporter 142 of the holder unit 140 into the coupling parts 134 formed at both ends of the support rod 131 of the spacer unit 130, respectively. Here, the coil type spring 132 is inserted between the support rods 131 to maintain a predetermined gap between the support rods 131.

Then, when adjusting the bending angle between the unit modules 110, the spring 132 is compressed by applying force thereto until a desired gap is obtained, and then the lower support 141 and the upper support 143 are fixed by using the jig 134.

Thereafter, both side ends of each of two unit modules bendably connected to the supporting bar 131 are connected to the supporting bar 131. Here, since it is desirable that the unit modules are connected to the supporting bar 131 in a bendable manner, the unit modules are connected to each other by using units such as elastic bands, velcro, or clamps. The above unit can easily attach and detach the unit modules to and from the support bars 131 and conveniently store and transfer the unit modules.

Thereafter, the angle of the support 144a is adjusted in consideration of the incident angle of the sunlight.

As described above, the process including attaching the unit module to the supporting bar 131 and adjusting the angle of the support may be performed before coupling the supporting bar 131 to the holding unit 140, and the order of performing these processes is not particularly limited.

Further, in the spacing unit, the gap between the unit modules (i.e., the gap between the support bars) may be adjusted by using only a plurality of clamps without using the elastic member.

Further, when the photovoltaic cell module according to the ninth embodiment of the present invention is transferred or stored, the unit module, the spacing unit, and the holding unit may be detached in the reverse order of the above-described order.

Fig. 17 is a view exemplarily showing a mounting state of a photovoltaic cell module according to a ninth embodiment of the present invention. As shown in fig. 17, the photovoltaic cell module according to the ninth embodiment of the present invention may be installed in a horizontal direction or a vertical direction.

Fig. 18 is a diagram illustrating a state in which a photovoltaic cell module according to the present invention is mounted with respect to incident light. As shown in fig. 18, when the unit modules are arranged in a V-shape, a W-shape, or a repeated shape thereof with respect to the incident direction of sunlight, a portion of light reflected by one unit module may be re-absorbed to a unit module adjacent to the unit module to further improve power generation efficiency.

Further, in the case where the plurality of unit modules face each other as described above, by changing the internal angle between the unit modules between 180 ° and 0 ° when the incident light is vertically irradiated, although the horizontal installation area is reduced, the amount of power generation with respect to the angle of 180 ° is reduced by 30% or less in the internal angle range of 120 ° to 40 °. Therefore, the feature of maintaining the internal angle in the range of 120 ° to 40 ° may be preferable.

When a unit module including a flexible sheet or a thin film photovoltaic cell is applied, the unit module may be arranged in a U-shape or a repeated shape thereof to increase power generation amount, similar to the above case.

Further, when the double-sided power generation photovoltaic cell is used for the above photovoltaic cell unit modules having various bent shapes, the amount of power generation can be further increased because electric power is generated from the front and rear surfaces of the photovoltaic cell.

[ embodiment 10]

Fig. 19 is a view showing a photovoltaic cell module according to a tenth embodiment of the present invention, in which a unit module connected in a bendable manner is attached to each surface of a support plate or a bending case.

As shown in fig. 19, a photovoltaic cell module 200 according to the tenth embodiment includes: a plurality of photovoltaic cell modules 210; a unit module connecting unit 220 for connecting the unit module to an adjacent unit module in a bendable manner among the plurality of photovoltaic cell unit modules; and a unit module spacing unit 230 capable of adjusting a bending gap between the unit modules, and to which the unit modules are attached the unit module spacing unit 230.

The plurality of photovoltaic cell unit modules 210 and the unit module connection unit 220 may be the same as those of the ninth embodiment. Therefore, redundant description will be omitted.

The spacing unit 230 includes a plurality of support plates 231 and a support plate connection unit 232 for rotatably connecting the plurality of support plates 231 to each other.

The supporting plate connecting unit 232 has a hinge structure connecting both ends of the supporting plate 231 in a bendable manner.

Further, the unit modules may be attached to the support plate in various methods (e.g., a method using velcro).

[ embodiment 11]

Fig. 20 and 21 are a schematic view and a cross-sectional view illustrating a photovoltaic cell module according to an eleventh embodiment of the present invention, respectively.

As shown in fig. 20 and 21, when two adjacent panels 110 are connected by the connection unit 130 in a state bent at a predetermined angle, the adjacent panels 110 are inclined to each other and face each other. The panel includes a reflective plate 120 extending from an edge thereof. Sunlight that is not absorbed by the panel may be reflected to the facing panel by the reflection plate for additional absorption, thereby improving power generation efficiency.

The angle θ 1 between the adjacent panels may be adjusted within a range of more than 0 ° and less than 180 ° by means of the connection unit 130. The connection unit 130 may be bent while physically connecting the panels 110. For example, a mechanical rotation unit such as a hinge mechanically connected in a bendable state may be used. Also for example, a method for connecting panels 110 in a bendable manner by arranging a flexible member such as plastic or fiber between two adjacent panels 110 and then attaching the ends of the adjacent panels by using a unit such as an adhesive, bolts and nuts, and velcro. In addition, an electric wire for connecting electricity generated from the panel 110 may be disposed in the connection unit 130.

When the panels are inclined and faced to each other as described above, a test for verifying an increase in power generation of the photovoltaic cell was conducted. The following table shows results obtained by studying a change in the amount of power generation according to a change in the incident angle while irradiating vertical light with respect to the center portion of the panel and setting the internal angle θ 1 between the panels to 60 °.

TABLE 1

As shown in table 1 above, the amount of power generation increases compared to a panel without a reflection plate with respect to the incident angle of various incident lights. The power generation amount gradually increases as the length of the reflection plate increases from the edge of the panel. However, in consideration of the gap between the panels, the reflection plate may preferably have a lateral length twice the width of the panel and a longitudinal length once the width of the panel to prevent the shadow caused by the reflection plate.

Further, the reflection plate extending from the panel may preferably extend without a step portion with the panel. When the step portion is formed, power generation efficiency may be reduced, and foreign substances may be attached due to the step portion. In order to remove the stepped portion, as shown in fig. 22, since the reflection surface 121 and the attachment surface 122 for attaching to the panel are connected with the same difference as the thickness of the panel in the reflection plate, the attachment surface 122 may closely contact the rear surface of the panel and be attached thereto by using bolts and nuts, clamps, screws, and velcro, and the reflection surface 121 may be connected to the surface 111 of the panel without the stepped portion (refer to fig. 21).

The reflection surface 121, which is a surface of the reflection plate, may include a metal mirror, a glass mirror, or a plastic mirror to easily reflect sunlight.

Further, the reflective plate may be manufactured by applying a reflective material in a predetermined pattern on a substrate made of a transparent material such as acrylic or glass. For example, the light reflective material pattern may be formed on the transparent substrate by using a coating method such as deposition using vacuum deposition or screen printing. Further, a method of attaching a metal foil on a transparent substrate may be applied. Here, since the substrate of the reflector has thermal resistance, an insulating material capable of restricting temperature rise can be used.

The reflection plate may include a plurality of holes having various shapes. Since the holes allow wind to pass through, the wind may reduce pressure applied to the panel and the reflection plate, and thus may also reduce the risk of damage of the photovoltaic cell module caused by strong wind.

[ embodiment 12]

Fig. 23 is a view showing the same embodiment as embodiment 11 except that a reflection plate is included in only one of adjacent panels. When a plurality of photovoltaic cell modules are arranged, the reflective plate may generate a shadow, and the reflective plate may be arranged only on one side to prevent the shadow. According to circumstances, the reflection plate may be installed only at the left or right side or the upper portion of the panel.

[ embodiment 13]

Fig. 24 to 26 are schematic views for explaining a state in which the reflection plates are arranged at both ends in the vertical direction of the ordinary flat panel. The reflective plate is disposed on each of the surface of the panel close to the ground and the surface opposite to the ground (in the vertical direction), instead of surrounding all the surfaces of the rectangular panel as shown in fig. 25. Meanwhile, since the width of the reflection plate is greater than that of the panel, the reflection plate protrudes in a lateral direction.

When the reflection plates are installed on all four surfaces of the flat panel, sunlight may not reach the panel due to shadows. In addition, since the width of the reflection plate is greater than that of the panel, the frequency of the sunlight reflected and incident to the panel may be increased, thereby improving the power generation efficiency of the sunlight.

The size of the reflective plate may have a width dl and a length d 2. The width D1 may be greater than one and equal to or less than three times the transverse width D1 of the panel, and the length D2 may be equal to or less than one time the longitudinal length D2 of the panel. More preferably, the width D1 may be greater than one time the width D1 and equal to or less than 1.5 times it, and the length D2 may be equal to or less than 0.5 times the longitudinal length D2.

As described above, the width of the reflection plate may be greater than the width of the face plate. When the width of the reflection plate is more than three times the width of the panel, the installation space may be excessively increased, and the overall instability of the photovoltaic cell module may also be increased due to the increase in installation weight. Likewise, the length may be equal to or less than one time the longitudinal length of the panel in terms of installation space or stability.

In addition, the power generation efficiency of the photovoltaic cell may be improved by adjusting the interior angle θ 2 between the reflective plates 120 extending from the panel 110. Table 2 below shows that in the thirteenth embodiment of the present invention, it is shown that the power generation amount is increased in the range of 40 ° to 120 ° according to the increase rate of the power generation amount of the interior angle θ 2 between the reflection plates 120, and the increase is the largest (49.5%) at the angle of 90 °. Therefore, the interior angle θ 2 between the reflection plates 120 may preferably be in the range of 40 ° to 120 °.

TABLE 2

[ embodiment 14]

Fig. 27 is a view showing a state in which reflection plates are disposed on both ends of a flat panel. Unlike the thirteenth embodiment, the reflective plate is attached to the front surface of the panel instead of the rear surface, and is manufactured by applying a reflective pattern on a transparent flat plate.

[ embodiment 15]

Fig. 28 is a view showing a photovoltaic cell module in which the photovoltaic cell panel 150 and the reflective plate are inclined at a predetermined angle and face each other. In this case, two photovoltaic cell panels 150 may be provided instead of one panel.

By means of the reflection plate 160 inclined in the direction facing the panel, more sunlight can be induced and absorbed to the panel. In fig. 28, the internal angle θ 3 between the face plate 150 and the reflection plate of the face-to-face plate 150 is 120 °. However, the angle may vary.

[ embodiment 16]

Fig. 29 is a view showing a photovoltaic cell module in which the photovoltaic cell panel 150 and the reflection plate 160 are inclined at a predetermined angle and face each other. The area of the facing reflective plate may be twice the area of the face plate. This is different from the fifteenth embodiment in which the face plate and the reflecting plate have the same area. As the area of the panel increases, the amount of power generation increases.

The power generation increase rates according to the eleventh, fifteenth, and sixteenth embodiments are shown in the following table. In each embodiment, the power generation increase rate is measured by comparing a case where the panels are inclined and face each other (inner angle of 60 °) without the reflection plate under a condition that the inner angle between the panels and the reflection plate is 60 ° and the incident angle of the irradiated light is 0 °.

TABLE 3