KR20180108518A - Double-sided light receiving solar module - Google Patents

Abstract

The present invention relates to a bifacial photovoltaic cell module minimizing increase in a power generation-related area. According to one example of the present invention, the bifacial photovoltaic cell module comprises: a plurality of photovoltaic cells extended in a first direction by a plurality of conductive wirings to form each cell string; a junction box collecting and supplying power generated from the photovoltaic cells to the outside; and a plurality of conductors having one end connected to the conductive wirings connected to the last photovoltaic cell of each cell string and having the other end connected to the junction box. The junction box and the conductors are located outside the projection area of the photovoltaic cells. The conductors include a second direction portion extending in a second direction intersecting the first direction outside the projection area. The second directional portion provided on one or more conductors overlaps with the junction box.

Description

[0002] Double-sided light receiving solar module [0003]

The present invention relates to a double-sided light receiving solar cell module.

Recently, as energy resources such as oil and coal are expected to be depleted, interest in alternative energy to replace them is increasing, and solar cells that produce electric energy from solar energy are attracting attention.

Typical solar cells have a semiconductor portion that forms a p-n junction by different conductive types, such as p-type and n-type, and electrodes connected to semiconductor portions of different conductivity types, respectively.

When light is incident on such a solar cell, a plurality of electron-hole pairs are generated in the semiconductor portion, and the generated electron-hole pairs are separated into electrons and holes, respectively, so that the electrons move toward the n- Type semiconductor portion. The transferred electrons and holes are collected by different electrodes connected to the n-type semiconductor portion and the p-type semiconductor portion, respectively, and electric power is obtained by connecting these electrodes with electric wires.

A plurality of solar cells may be connected to each other to form a cell string, and at the end of the cell string, a lead connecting the cell string and a junction box located outside the solar cell module to each other Respectively.

On the other hand, among the conventional solar cell modules, the double-sided light receiving solar cell module receives the light from the front surface as well as the front surface of the module, so that the junction box is divided into solar cells In a non-overlapping area.

However, in such a case, there is a problem that the weight of the module increases because the area of the solar cell module that is not related to the power generation is relatively large, the efficiency of the module is relatively reduced, and the area of the module is widened.

SUMMARY OF THE INVENTION An object of the present invention is to provide a double-sided light receiving solar cell module that minimizes an increase in area irrelevant to power generation.

A double-sided light receiving solar cell module according to an exemplary embodiment of the present invention includes: a plurality of solar cells connected in a first direction by a plurality of conductive wirings to form respective cell strings; A junction box for collecting and supplying power generated from a plurality of solar cells to the outside; A plurality of conductive lines connected to a plurality of conductive wirings connected to the last solar cell of each cell string and having the other end connected to the junction box; Wherein the junction box and the plurality of conductors are located outside a projected area of the plurality of solar cells and the plurality of conductors include a second directional portion extending in a second direction outside the projection region in a second direction intersecting the first direction, The second directional portion provided on the lead of the second electrode is overlapped with the junction box.

Here, the plurality of conductive wirings are elongated in the first direction, and the plurality of conductive wirings connected to the last solar cell of each cell string can be connected to the second direction portion included in the plurality of conductors.

Such a plurality of conductors is connected to the last solar cell of the inner cell string located inside the outermost cell string and the outer lead connected to the conductive wiring connected to the last solar cell of the outermost cell string located at the outermost of each cell string And an inner lead connected to the conductive wiring.

Wherein a first gap between the second directional portion of the outer conductor and the last solar cell of the outermost cell string is greater than a second distance between the second directional portion of the inner conductor and the inner cell string, Lt; RTI ID = 0.0 > solar cell. ≪ / RTI >

Specifically, the difference between the first spacing and the second spacing may be greater than the linewidth of the inner conductor and less than twice the linewidth of the inner conductor.

To this end, the outermost protruding length of the conductive wiring connected to the last solar cell of the outermost cell string may be longer than the inward protruding length of the conductive wiring connected to the last solar cell of the inner cell string.

For example, the outermost projection length may be greater than 1.5 times the inner projection length and less than three times the inner projection length.

In addition, the line width of each of the plurality of conductors may be larger than the line width of each of the conductive wirings.

For example, the ratio of the line width of each of the plurality of conductive lines to the line width of each conductive wiring may be between 1:15 and 25.

Each of the plurality of conductors further includes a first direction portion extending in a first direction intersecting the second direction portion at the end of the second direction portion, and the ratio of the first direction portion to the second direction portion is 1: It can be between 6 and 15.

The solar cell module further includes a front transparent member positioned on a front surface of the plurality of solar cells; A rear member positioned on a rear surface of the plurality of solar cells; A sealing member disposed between the plurality of solar cells and the front transparent member and between the plurality of solar cells and the rear member; And a frame that surrounds the outer surface of the front transparent member, the sealing member, and the rear member, and the rear member may be transparent.

The junction box is located at the rear upper outer side of the solar cell module. When the solar cell module is viewed from the front, the distance from the frame located at the upper side of the solar cell module to the junction box is located at the lower side of the solar cell module May be greater than the distance from the frame to the last solar cell of each cell string.

The frame further includes a first portion covering a front edge portion of the front transparent member, a second portion extending from an end of the first portion to cover a side of the front transparent member, the rod- And a third portion that covers the back edge portion of the substrate.

In addition, the first directional portion included in each of the plurality of conductors may be connected to the terminal provided in the junction box through the rear member.

Also, the front transparent member may include a glass material, and the rear member may include a resin material that is lighter than the glass material.

In addition, the plurality of solar cells in each cell string may be spaced apart in the first direction, and the spacing of the plurality of solar cells in the first direction may be smaller than the second spacing.

Further, when viewing the solar cell module from the front, the distance (B1) from the frame located at the upper side of the solar cell module to the junction box is the distance between the second direction portion of the inner lead wire and the last solar cell of the inner cell string May be greater than the interval A2.

The solar cell module according to the present invention is configured such that a plurality of conductive wires are not overlapped with the solar cell but a second direction portion provided in a direction intersecting with the longitudinal direction of the cell string is overlapped with the junction box, An increase in the irrelevant area can be minimized.

FIG. 1 (a) shows a front view of a double-sided light receiving solar cell module, and FIG. 1 (b) shows a rear view of a double-sided light receiving solar cell module.
2 is an exploded perspective view of a double-side light receiving solar cell module.
3 is a diagram for explaining a cell string.
4 is a view for explaining the connection structure of each solar cell 100 and the conductive wiring 300. As shown in FIG.
5 (a) shows a top front view of the double-side light receiving solar cell module in more detail, and FIG. 5 (b) shows a bottom front view of the double-side light receiving solar cell module in more detail.
6 is an enlarged view of a second direction portion and a first direction portion of the outer leads 410 and 420 and the inner leads 430 and 440, respectively.
Fig. 7 shows a cross section of the CS-CS line in Fig. 5 (a).

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

In the drawings, the thicknesses are enlarged to clearly indicate layers and regions. When a layer, film, region, plate, or the like is referred to as being "on" another portion, it includes not only the case directly above another portion but also the case where there is another portion in between. Conversely, when a part is "directly over" another part, it means that there is no other part in the middle. Further, when a certain portion is formed as "whole" on another portion, it means not only that it is formed on the entire surface of the other portion but also that it is not formed on the edge portion.

Hereinafter, the front surface may be one surface of the semiconductor substrate to which the direct light is incident, and the rear surface may be the opposite surface of the semiconductor substrate in which direct light is not incident, or reflected light other than direct light may be incident.

In addition, the meaning that the thickness and width of a constituent part are the same as the thickness and width of other constituent parts means that they are the same within a range of 10% including a process error.

1 to 4 are views for explaining a double-side light receiving solar cell module according to an example of the present invention.

1 (a) shows a front view of a double-side light receiving solar cell module, FIG. 1 (b) shows a rear view of a double-side light receiving solar cell module, and FIG. 2 shows a double- Fig. 3 is an exploded perspective view of a solar cell module, and Fig. 3 is a view for explaining a cell string.

4A is a view illustrating a structure in which the conductive wiring 300 is connected to the solar cell 100, and FIG. 4B is a view for explaining a connection structure between the solar cell 100 and the conductive wiring 300. FIG. 4B is a view showing a structure in which the conductive wiring 300 is connected to the solar cell 100 from a cross section of the solar cell 100. FIG.

1 to 4, an example of a solar cell module according to the present invention includes a front transparent member 10, sealing members 20 and 30, a rear member 40, a frame 50, a plurality of solar cells (not shown) 100, and wires 410, 420, 430, 440. [

1 to 3, the front transparent member 10 may be disposed on the front surface of the plurality of solar cells 100 and may include a transparent glass material. For example, the front transparent member 10 may be formed of tempered glass or the like having a high transmittance and excellent breakage prevention function.

1 to 3, the sealing members 20 and 30 are formed of a front seal member 20 positioned between a plurality of solar cells 100 and a front transparent member 10, a plurality of solar cells 100, And a back sealing member 30 positioned between the back members 40. [

The sealing materials 20 and 30 may be made of a transparent material such that light incident through the front transparent member 10 and light incident through the rear member 40 are incident on the plurality of solar cells 100 (PVA) or polyolefin (POE), which is capable of absorbing shocks and protecting the solar cell 100 from shocks, thereby preventing corrosion due to moisture penetration, And may be formed in the form of a sheet for convenience of the manufacturing process.

The sheet-shaped sealing members 20 and 30 are disposed between the front transparent member 10 and the solar cell 100 and between the solar cell 100 and the rear member 40 so that heat and pressure are applied during the lamination process. To be softened and cured.

As shown in FIGS. 1 to 3, the rear member 40 may be made of a transparent material so as to be positioned on the rear surface of the plurality of solar cells 100 and receive light to the rear surface of the module. In order to reduce the weight, the rear member 40 may be formed of a sheet including a resin material that is lighter than glass.

However, the rear member 40 is not limited to a sheet made of resin but may be formed of glass.

The rear member 40 prevents moisture from penetrating the rear surface of the solar cells 100, thereby protecting the solar cell 100 from the external environment. Such a backing member 40 may have a multi-layer structure such as a layer preventing water and oxygen penetration, a layer preventing chemical corrosion.

Such a backing member 40 may be made of a thin sheet made of an insulating material such as FP (fluoropolymer) / PE (polyeaster) / FP (fluoropolymer).

1, the frame 50 is positioned to surround the outer edge portions of the front transparent member 10, the sealing materials 20 and 30, and the rear member 40, and the front transparent member 10 The sealing members 20 and 30 and the rear member 40 can be protected.

Such a frame 50 may be formed of at least one material of reinforced plastic, steel, or stainless steel.

The structure of the frame 50 will be described in more detail with reference to FIG.

The plurality of solar cells 100 are positioned between the front seal member 20 and the rear seal member 30 and can generate electric power from the incident light.

As shown in FIGS. 1 and 3, each of the plurality of solar cells 100 is connected by a plurality of conductive wirings 300 in a first direction (x) A string can be formed.

4 (a), each of the plurality of solar cells 100 includes a first electrode 140 on the front surface of the solar cell 100, a second electrode 140 on the rear surface of the solar cell 100, The second electrode 150 having a different polarity from the first electrode 140 may be positioned.

4A, the first and second electrodes 140 and 150 of the solar cell 100 are arranged in a second direction y intersecting the longitudinal direction of the conductive wiring 300 It can be positioned in a long striped form.

The plurality of conductive wirings 300 are extended in the first direction x and connected to the first electrode 140 or the second electrode 150 through a conductive adhesive such as a solder paste .

The plurality of conductive wirings 300 may be coated with a coating layer containing a solder material on a core such as copper and connected to the first electrode 140 or the second electrode 150.

3, the plurality of conductive wirings 300 are connected to the first electrode 140 and the second electrode 150 of each solar cell 100 adjacent to each other in the first direction (x) , And each cell string can be formed.

Each of these cell strings may be arranged long in the first direction x and spaced in the second direction y, as shown in Figures 1 (a) and 1 (b).

Each of the plurality of conductors 410, 420, 430, and 440 may include a plurality of conductors 410, 420, 430, and 440 connected to the last solar cell 100 of each cell string, And the other end may be connected to the junction box 600 through the rear member 40. [

In addition, as shown in FIG. 1, a bending bar 350 may be further provided at a lower portion of the module to connect each cell string in series in a second direction (y).

The front transparent member 10, the sealing members 20 and 30, the rear member 40, the plurality of solar cells 100, the busbars 350 and the plurality of conductors 410, 420, 430, 2, and can be thermally pressed and integrated during the lamination process, and the integrated front transparent member 10, the sealing materials 20 and 30, the rear member 40, the plurality of solar cells 100 And the plurality of wires 410, 420, 430, and 440 may be packaged by the frame 50. [

The junction box 600 may collect power generated from the plurality of solar cells 100 and supply the collected power to the outside. As shown in FIG. 1, the rear surface of the module, that is, And may be located at the top of the rear surface.

Specifically, the junction box 600 may be located outside the projection area of the plurality of solar cells 100 in the upper rear surface of the module. That is, more specifically, the junction box 600 may be located in an area between the frame 50 and the solar cell 100 among the rear upper surface of the module.

By thus positioning the junction box 600 outside the projection area of a plurality of solar cells 100 in the upper rear surface of the module, it is possible to prevent the light from being blocked by the junction box 600 when light is incident on the rear surface of the module .

1 (a) and 1 (b), a plurality of wires 410, 420, 430, and 440 are formed in a plurality of solar cells 100 Of the plurality of wires 410, 420, 430, and 440 may be located outside the projection area of the solar cell 100 and between the frame 50 and the solar cell 100, The extended portion can be overlapped with the junction box 600 to minimize an increase in the generation-independent area of the module.

Thus, the efficiency of the double-sided light receiving solar cell module can be further improved.

Hereinafter, the specific structure of the plurality of conductors 410, 420, 430, and 440 will be described in more detail with reference to FIGS. 5 to 7. FIG.

5 (a) shows a top front view of the double-side light receiving solar cell module in more detail, and FIG. 5 (b) shows a bottom front view of the double-side light receiving solar cell module in more detail.

6 is an enlarged view of a second direction portion and a first direction portion of the outer leads 410 and 420 and the inner leads 430 and 440, respectively.

Fig. 7 shows a cross section of the CS-CS line in Fig. 5 (a).

As shown in FIG. 5A, the plurality of leads 410, 420, 430 and 440 according to the present invention may include outer leads 410 and 420 and inner leads 430 and 440.

The outer leads 410 and 420 may be connected to the conductive wirings 300 connected to the last solar cell 100EC of the outermost cell string located at the outermost one of the cell strings and the inner leads 430 and 440, May be connected to the conductive wiring 300 connected to the last solar cell 100EC of the inner cell string located inside the outermost cell string.

Here, the outermost cell string means a cell string located at the outermost edge of a plurality of cell strings spaced apart in the second direction, and the inner cell string indicates a cell string located in the outermost cell string in the second direction among the plurality of cell strings Cell string "

The plurality of conductors 410, 420, 430, and 440 may be located outside the projection area of the plurality of solar cells 100, and may be located in a region between the frame 50 and the solar cell 100.

The plurality of conductors 410, 420, 430, and 440 may be disposed outside the projection area of the plurality of solar cells 100, that is, in the area between the frame 50 and the solar cell 100 in the second direction y. 420a, 430a, 440a at the ends of the second directional portions 410a, 420a, 430a, 440a and second directional portions 410a, 420a, 430a, And may include first directional portions 410b, 420b, 430b, and 440b that extend in a first direction x that intersects each other.

More specifically, each of the outer leads 410 and 420 and the inner leads 430 and 440 includes second direction portions 410a, 420a, 430a, and 440a extending in the second direction y in the second direction y, 420b, 430b, and 440b extending in a first direction x at the ends of the second directional portions 410a, 420a, 430a, and 440a.

The plurality of conductive wirings 410a, 420a, 430a, and 440a connected to the last solar cell 100EC of each cell string located at an upper portion of the module are provided in the second directional portions 410a, 420a, 430a, (Not shown).

The first directional portions 410b, 420b, 430b, and 440b of the conductors 410, 420, 430, and 440 may be partially connected to the connection terminals of the junction box 600 through the rear member 40 .

The second directional portions 410a, 420a, 430a and 440a provided on at least one of the conductors 410, 420, 430 and 440 of the plurality of conductors 410, 420, 430 and 440 are connected to the junction box 600, Lt; / RTI >

For example, the second directional portions 410a and 420a of the outer leads 410 and 420 and the second directional portions 430a and 440a of the inner leads 430 and 440, as shown in FIG. 5A, All of which may overlap with the junction box 600.

However, the present invention is not limited thereto. Alternatively, only the second direction portions 410a and 420a of the outer leads 410 and 420 may overlap with the junction box 600, and the inner leads 430 and 440 may extend in the second direction The portions 430a and 440a do not overlap the junction box 600 and may be located in the region between the junction box 600 and the solar cell 100. [

As described above, in the present invention, the second direction portions 410a, 420a, 430a, and 440a extending in the second direction y of the plurality of conductors 410, 420, 430, and 440 are overlapped with the junction box 600 By positioning, an increase in the area of the module that is not related to the power generation can be minimized.

In order to realize such a structure, the first interval A1 between the second direction parts 410a and 420a of the outer leads 410 and 420 and the last solar cell 100EC of the outermost cell string is the inner lead 430 440a of the inner cell string and the second space A2 between the second directional portions 430a, 440a of the inner cell string and the last solar cell 100EC of the inner cell string.

More specifically, the difference between the first interval A1 and the second interval A2 is greater than the line width W400 of the inner leads 430 and 440 and the difference between the line width W400 of the inner leads 430 and 440, Or less.

Here, for example, the line width W400 of the inner leads 430 and 440 and the line width W400 of the outer leads 410 and 420 may be equal to each other.

The second direction portions 430a and 440a of the inner leads 430 and 440 are connected between the second direction portions 410a and 420a of the outer leads 410 and 420 and the last solar cell 100EC of the outermost cell string, ) Can be located.

To this end, the conductive wiring 300 connected to the last solar cell 100EC of the outermost cell string protrudes in the direction of the outer leads 410 and 420, and is connected to the last solar cell 100EC of the inner cell string The conductive wirings 300 may protrude in the direction of the inner leads 430 and 440.

The outermost protruding length K1 of the conductive wiring 300 connected to the last solar cell 100EC of the outermost cell string is equal to the length of the inner side of the conductive wiring 300 connected to the last solar cell 100EC of the inner cell string May be formed longer than the protruding length (K2).

That is, the conductive wiring 300 connected to the last solar cell 100EC of the outermost cell string is closer to the last solar cell 100EC of the cell string than the conductive wiring 300 connected to the last solar cell 100EC of the inner cell string. In the first direction (x).

For example, the outermost protrusion length K1 may be greater than 1.5 times the inner protrusion length K2 and less than three times the inner protrusion length K2.

In addition, the plurality of solar cells in each cell string are spaced apart in the first direction (x), and the spacing of the plurality of solar cells in the first direction (x) may be smaller than the second spacing (A2) A plurality of conductive wirings 300 may be connected to each of the wires 410, 420, 430, 440 in the solar cell module according to the present invention. For example, between 10 and 30 conductive wirings 300 may be connected to each of the conductive lines 410, 420, 430, and 440.

In this case, when the line width W400 of the conductive lines 410, 420, 430, and 440 is equal to the line width W300 of the conductive line 300, the series resistance of the conductive lines 410, 420, 430, and 440 increases The line width W400 of each of the plurality of conductors 410, 420, 430, and 440 may be set to be less than the width W400 of the conductive wiring 300 (W300).

For example, the ratio of the line width W400 of each of the plurality of conductors 410, 420, 430, and 440 to the line width W300 of each of the conductive lines 300 may be between 1:15 and 25.

6, the length L1 of the second directional portions 410a and 420a of the outer lead lines 410 and 420 is greater than the length L1 of the second directional portions 430a and 440a of the inner lead lines 430 and 440. In other words, And the length L2 of the first direction portions 410b and 420b of the outer leads 410 and 420 may be longer than the length L3 of the first direction portions 430b and 440b of the inner leads 430 and 440. [ ).

For example, the length L1 of the second directional portions 410a and 420a of the outer leads 410 and 420 is 1.3 times the length L3 of the second directional portions 430a and 440a of the inner leads 430 and 440, And the length L2 of the first directional portions 430b and 440b of the outer lead lines 410 and 420 may be equal to or greater than the length of the first directional portions 430b and 440b of the inner lead lines 430 and 440 L4) of 0.75 to 0.85.

The length L2 or L4 of the first direction portions 410b, 420b, 430b and 440b of each of the conductors 410, 420, 430 and 440 is greater than the length L2 or L4 of the second direction portions 410, 420, 430, The length (L1 or L3) of the first electrodes 410a, 420a, 430a, and 440a may be 1: 6-15.

For example, the ratio of the first portion length L2 of the outer leads 410, 420 to the second portion length L1 of the outer leads 410, 420 may be between 1:12 and 15, The ratio of the length L4 of the first and second directional portions 430 and 440 to the length L3 of the second directional portion of the inner leads 430 and 440 may be between 1:

When the solar cell module is viewed from the front, the distance B1 from the frame 50 located at the upper side of the solar cell module to the junction box 600 is smaller than the distance B1 from the second directional portion of the inner conductor 430, 440 430a, 440a and the last solar cell 100EC of the inner cell string.

The distance B1 from the frame 50 located at the upper side of the solar cell module shown in FIG. 5 (a) to the junction box 600 when viewed from the front of the solar cell module is shown in FIG. b may be greater than the distance B2 from the frame 50 located at the lower portion of the solar cell module to the last solar cell 100EC of each cell string in the junction box 600. [ In order to minimize the interference with the frame 50 when positioning the module 50 on the upper side of the rear surface of the module.

That is, the frame 50 may include a first portion 50a, a second portion 50b, a third portion 50c, and a fourth portion 50d, as shown in Fig.

Here, the first portion 50a of the frame 50 may be positioned to cover the front edge portion of the front transparent member 10.

The second portion 50b extends from the end of the first portion 50a in the thickness direction z of the module intersecting the width direction x of the first portion 50a to form the front transparent member 10, And the side surface of the rear member 40, as shown in Fig.

The third portion 50c may be positioned to cover the rear edge portion of the rear member 40 in the same direction as the width direction x of the first portion 50a from the second portion 50b.

The fourth portion 50d intersects the width direction x of the second portion 50b from the end of the second portion 50b and extends inwardly of the module in parallel with the first and second portions 50a and 50b. Direction (x).

Here, the fourth portion 50d functions as a module support for fixing the module to a specific position on the building roof or wall surface, and for fixing the module, the width L50d of the fourth portion 50d is smaller than the width Lt; / RTI > may be longer than the width of the first portion 50a.

In this case, due to the fourth portion 50d of the frame 50, when the junction box 600 is positioned between the frame 50 and the solar cell 100 in the upper rear portion of the module, The distance from the first portion 50a of the frame 50 to the junction box 600 is measured from the first portion 50a of the frame 50 located on the lower side of the solar cell module to the last solar cell of each cell string It is possible to minimize the interference due to the fourth portion 50d of the frame 50 during the module manufacturing process by increasing the distance to the battery 100EC.

Due to such a module structure, the module manufacturing process can be further facilitated.

The width L50d of the fourth portion 50d adjacent to the junction box 600 in the fourth portion 50d of the frame 50 located on the module upper side portion is smaller than the width The distance B1 from the first portion 50a of the frame 50 located at the upper side of the module to the junction box 600 is located at the lower side of the solar cell module May be smaller than the distance B2 from the first portion 50a of the frame 50 to the last solar cell 100EC of each cell string.

In such a case, the area of the module can be further reduced, and the efficiency of the module can be further improved.

As described above, in the double-sided light receiving module according to the present invention, the second direction portions 410a, 420a, 430a, and 440a of the wires 410, 420, 430, and 440, Is formed to overlap with the junction box 600, the efficiency of the module can be maximized.

In FIG. 7, reference numeral 400 denotes the conductors 410, 420, 430 and 440, 400a denotes the second direction portions 410a, 420a, 430a and 440a, 400b denotes the first direction portions 410b, 420b and 430b , 440b).

The first directional portions 410b, 420b, 430b and 440b of the conductors 410, 420, 430 and 440 may be connected to the junction box 600 through the rear member 40, as shown in FIG. 7 .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

Claims (17)

A plurality of solar cells extended in a first direction by a plurality of conductive wirings to form respective cell strings;
A front transparent member disposed on a front surface of the plurality of solar cells;
A rear member positioned on a rear surface of the plurality of solar cells;
A sealing member disposed between the plurality of solar cells and the front transparent member and between the plurality of solar cells and the rear member;
A frame surrounding an outer periphery of the front transparent member, the sealing member, and the rear member;
A junction box for collecting and supplying power generated from the plurality of solar cells to the outside; And
And a plurality of conducting wires connected to the plurality of conductive wirings connected to the last solar cell of each cell string, the other end of which is connected to the junction box,
Wherein the junction box and the plurality of conductors are located outside a projection region of the plurality of solar cells,
Wherein the plurality of conductors include a second direction portion extending in a second direction intersecting with the first direction outside the projection region,
The second direction portion provided on at least one of the plurality of conductors overlaps with the junction box,
Wherein the junction box is spaced apart from a first portion of the frame surrounding the front edge portion of the front transparent member and a third portion surrounding the rear edge portion of the rear member. The method according to claim 1,
The plurality of conductive wirings extending long in the first direction,
Wherein the plurality of conductive wirings connected to the last solar cell of each cell string are connected to the second direction portion included in the plurality of conductors. The method according to claim 1,
Wherein the plurality of conductors comprise an outer conductor connected to the conductive wiring connected to the last solar cell of the outermost cell string located at the outermost one of the cell strings,
And an inner lead connected to the conductive wiring connected to the last solar cell of the inner cell string located inside the outermost cell string. The method of claim 3,
Wherein each of the outer and inner leads includes the second direction portion,
Wherein a first gap between the second direction portion of the outer conductor and the last solar cell of the outermost cell string is larger than a second gap between the second direction portion of the inner conductor and the last solar cell of the inner cell string, Type solar cell module. 5. The method of claim 4,
Wherein the difference between the first interval and the second interval is larger than the line width of the inner lead and smaller than twice the line width of the inner lead. 5. The method of claim 4,
Wherein the outermost protruding length of the conductive wiring connected to the last solar cell of the outermost cell string is longer than the inward protruding length of the conductive wiring connected to the last solar cell of the inner cell string. The method according to claim 6,
Wherein the outermost protruding length is greater than 1.5 times the inside protruding length and smaller than 3 times the inside protruding length. The method according to claim 1,
Wherein the line width of each of the plurality of conductors is larger than the line width of each of the conductive wirings. The method according to claim 1,
Wherein a ratio of a line width of each of the plurality of conductors to a line width of each of the conductive wirings is in a range of 1:15 to 25. The method according to claim 1,
Each of the plurality of conductors further including a first direction portion extending in the first direction intersecting the second direction portion at an end of the second direction portion,
Wherein the ratio of the first direction portion to the second direction portion is between 1: 6 and 15. The method of claim 3,
Wherein the rear member is a transparent double-sided light receiving solar cell module. 12. The method of claim 11,
Wherein the junction box is located on a rear outer upper side of the solar cell module,
The distance from the frame to the junction box located on the upper side of the solar cell module is larger than the distance from the frame located on the lower side of the solar cell module to the last solar cell of each cell string, Side solar cell module. 12. The method of claim 11,
Wherein the frame includes a first portion covering a front edge portion of the front transparent member,
A second portion extending from an end of the first portion and covering a side surface of the front transparent member, the sealing member and the rear member,
And the third portion extending from the second portion and covering a rear edge portion of the rear member. 12. The method of claim 11,
Wherein the first direction portion included in each of the plurality of conductors penetrates the rear member and is connected to a terminal provided in the junction box. 12. The method of claim 11,
Wherein the front transparent member includes a glass material and the rear member includes a resin material that is lighter than the glass material. 5. The method of claim 4,
Wherein a plurality of solar cells are spaced apart from each other in the first direction in the cell strings and an interval in which the plurality of solar cells are spaced apart from each other in the first direction is smaller than the second interval. 12. The method of claim 11,
The distance from the frame located at the upper side of the solar cell module to the junction box is smaller than the distance between the second direction portion of the inner conductor and the last solar cell of the inner cell string, Spacing solar cell module.

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