KR102191906B1 - Solar cell panel, and apparatus and method for attaching interconnector of solar cell panel - Google Patents

Abstract

A method of attaching a wiring member to a solar panel according to an exemplary embodiment of the present invention includes the steps of: loosening the wiring member wound on a winding roll and moving it in a process direction; And attaching the wiring material to the solar cell. In the moving step, the wiring member wound around the winding roll is unwound so as to pass through one end of the winding roll in the length direction.

Description

A solar panel, and an apparatus and method for attaching a wiring material for a solar panel TECHNICAL FIELD TECHNICAL FIELD

The present invention relates to a solar panel, and to an apparatus and method for attaching a wiring member of a solar panel, and more specifically, a solar panel including a wiring member connecting a plurality of solar cells, and an apparatus for attaching a wiring member of the solar panel, and It's about how.

Recently, as existing energy resources such as oil and coal are expected to be depleted, interest in alternative energy to replace them is increasing. Among them, solar cells are in the spotlight as next-generation cells that convert solar energy into electric energy.

A plurality of such solar cells are connected in series or in parallel by a ribbon, and are manufactured in the form of a solar panel by a packaging process for protecting a plurality of solar cells. Since solar panels must generate power for a long time in various environments, long-term reliability is greatly required. At this time, conventionally, a plurality of solar cells are connected with a ribbon.

However, since the apparatus and method for attaching such a ribbon is complicated, productivity may decrease. In addition, when a wiring material of a different structure is used instead of a ribbon, a device and a method to attach it are not suggested.

Referring to patent document KR 10-2014-0030038, research on a method and apparatus for manufacturing a solar cell string is continued.

An object of the present invention is to provide an apparatus and method for attaching a wiring material for a solar panel capable of improving productivity by attaching a wiring material to a solar cell by an automated system.

And it is intended to provide a solar panel having stability and reliability.

A method of attaching a wiring member to a solar panel according to an exemplary embodiment of the present invention includes the steps of: loosening the wiring member wound on a winding roll and moving it in a process direction; And attaching the wiring material to the solar cell. In the moving step, the wiring member wound around the winding roll is unwound so as to pass through one end of the winding roll in the length direction.

An apparatus for attaching a wiring member for a solar panel according to an exemplary embodiment of the present invention includes: a wiring member supply unit for unwinding a wiring member wound on a winding roll and moving in a process direction; And an attachment portion for attaching the wiring member to the solar cell. The wiring material supply unit may include a winding roll wound around the wiring material; And a unwinding control member for unwinding the wiring member from the winding roll. The unwinding control member causes the wiring member to be unwound while passing through one end portion in the length direction of the winding roll.

A solar panel according to an embodiment of the present invention includes a photoelectric conversion unit and a plurality of solar cells each including a first electrode and a second electrode connected to the photoelectric conversion unit; And a plurality of wiring members connecting the first electrode of one solar cell among the plurality of solar cells and the second electrode of a solar cell adjacent thereto. The electrode includes a plurality of finger lines formed in a first direction and parallel to each other, and six or more busbar lines formed in a second direction crossing the first direction. The plurality of wiring members have a diameter or width of 250 μm to 500 μm, are connected to the bus bar line, and are disposed at least six on one side of the solar cell. The yield strength of each of the plurality of wiring members is 110 mpa or less.

According to the apparatus and method for attaching a wiring member of a solar panel according to the present exemplary embodiment, the wiring member may be loosened and attached to the solar cell while minimizing the yield strength of the wiring member. In addition, it is possible to improve mass production by preventing deformation and breakage of the wiring material.

In addition, the solar panel according to this embodiment has a low wiring material yield? Therefore, it is possible to minimize the stress applied by the wiring material to the solar cell, thereby improving the structural stability and reliability of the solar panel.

1 is a perspective view showing a solar panel according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1.
3 is a partial cross-sectional view illustrating an example of a solar cell included in the solar panel of FIG. 1 and a wiring member connected thereto.
4 is a perspective view schematically illustrating a first solar cell and a second solar cell included in the solar panel shown in FIG. 1 and connected by a wiring member.
5 is a partial plan view showing an enlarged portion A of FIG. 4.
6 is a block diagram schematically showing a part of an apparatus for attaching a wiring member for a solar panel according to an embodiment of the present invention.
7 is a block diagram schematically showing another part of an apparatus for attaching a wiring member for a solar panel according to an embodiment of the present invention.
8 is a conceptual diagram schematically showing a worktable, a heat source, and a supply of an upper fixing member of an apparatus for attaching a wiring material for a solar panel according to an embodiment of the present invention.
9 is an exploded perspective view showing an enlarged portion corresponding to one winding roll in the wiring material supply unit shown in FIG. 6.
10 is a perspective view showing another example of a guide member included in the wiring member attachment member in the embodiment of the present invention.
FIG. 11 is a diagram illustrating an operation of a cutting unit included in the apparatus for attaching a wiring member shown in FIG. 6.
FIG. 12 is a perspective view illustrating a state in which a solar cell and a wiring member positioned above the solar cell are fixed using an upper fixing member included in the wiring member attaching apparatus shown in FIG. 7.
13 is a block diagram schematically showing an apparatus for attaching a wiring member according to an embodiment of the present invention.
14A to 14G are diagrams for explaining an operation of an attachment portion of the apparatus for attaching a wiring member shown in FIG. 7.
15 is an exploded perspective view showing a part of a wiring material supply part of an apparatus for attaching a wiring material of a solar panel according to another embodiment of the present invention.
16 is an exploded perspective view showing a part of a wiring material supply part of an apparatus for attaching a wiring material of a solar panel according to another embodiment of the present invention.
17 is a block diagram schematically showing a part of an apparatus for attaching a wiring member for a solar panel according to another embodiment of the present invention.
18 is a side view showing each winding roll of a wiring material supply unit of an apparatus for attaching a wiring material of a solar panel according to another embodiment of the present invention.
19 is a side view showing each winding roll of a wiring material supply unit of a device for attaching a wiring material of a solar panel according to another embodiment of the present invention.
20 is a side view showing a wiring material supply part of the apparatus for attaching a wiring material of a solar panel according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it goes without saying that the present invention is not limited to these embodiments and may be modified in various forms.

In the drawings, in order to clearly and briefly describe the present invention, portions not related to the description are omitted, and the same reference numerals are used for identical or extremely similar portions throughout the specification. In addition, in the drawings, the thickness and width are enlarged or reduced in order to clarify the description. However, the thickness and width of the present invention are not limited to those shown in the drawings.

In addition, when a certain part "includes" another part throughout the specification, the other part is not excluded, and other parts may be further included unless specifically stated to the contrary. In addition, when a part such as a layer, film, region, plate, etc. is said to be "on" another part, this includes not only the case where the other part is "directly above", but also the case where the other part is located in the middle. When a part such as a layer, a film, a region, or a plate is "directly over" another part, it means that no other part is located in the middle.

Hereinafter, a solar panel according to an embodiment of the present invention and an apparatus and method for attaching a wiring material for a solar panel will be described in detail with reference to the accompanying drawings. For clarity, a solar panel having a wiring material attached by the solar panel wiring material attachment apparatus and method according to the present embodiment will be first described, and then a wiring material attachment apparatus and method for a solar panel according to the embodiment will be described. . Hereinafter, expressions such as "first" and "second" are used to distinguish each other, and the present invention is not limited thereto.

1 is a perspective view showing a solar panel according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1.

Referring to FIGS. 1 and 2, the solar panel 100 according to the present exemplary embodiment includes a plurality of solar cells 150 and a wiring member 142 electrically connecting the plurality of solar cells 150. In addition, the solar panel 100 includes a sealing material 130 that surrounds and seals a plurality of solar cells 150 and a wiring material 142 connecting the same, and a front surface positioned on the front surface of the solar cell 150 on the sealing material 130. It includes a substrate 110 and a rear substrate 120 positioned on the rear surface of the solar cell 150 on the sealing material 130. This will be described in more detail.

First, the solar cell 150 may include a photoelectric conversion unit that converts a solar cell into electrical energy, and an electrode that is electrically connected to the photoelectric conversion unit to collect and transmit current. In addition, the plurality of solar cells 150 may be electrically connected in series, parallel, or series-parallel by the wiring member 142. Specifically, the wiring member 142 electrically connects two adjacent solar cells 150 among the plurality of solar cells 150.

In addition, the bus ribbon 145 alternately connects both ends of the wiring member 142 of the solar cell 150 (ie, a solar cell string) that is connected by the wiring member 142 to form one row. The bus ribbon 145 may be disposed in a direction crossing the end of the solar cell string. The bus ribbon 145 may connect adjacent solar cell strings or connect the solar cell string or the solar cell strings to a junction box (not shown) that prevents reverse current flow. The material, shape, and connection structure of the bus ribbon 145 may be variously modified, and the present invention is not limited thereto.

The sealing material 130 may include a first sealing material 131 located on the front surface of the solar cell 150 connected by the wiring material 142 and a second sealing material 132 located on the rear surface of the solar cell 150. I can. The first sealing material 131 and the second sealing material 132 prevent the inflow of moisture and oxygen, and chemically couple the elements of the solar panel 100. The first and second sealing materials 131 and 132 may be formed of an insulating material having light-transmitting and adhesive properties. For example, ethylene vinyl acetate copolymer resin (EVA), polyvinyl butyral, silicon resin, ester resin, olefin resin, and the like may be used as the first sealing material 131 and the second sealing material 132. The rear substrate 120, the second sealant 132, the solar cell 150, the first sealant 131, and the front substrate 110 are integrated by a lamination process using the first and second sealants 131 and 132. As a result, the solar panel 100 can be configured.

The front substrate 110 is positioned on the first sealant 131 to constitute the front surface of the solar panel 100, and the rear substrate 120 is positioned on the second sealant 132 to prevent the solar cell 150. Construct the rear. Each of the front substrate 110 and the rear substrate 120 may be made of an insulating material capable of protecting the solar cell 150 from external shock, moisture, and ultraviolet rays. In addition, the front substrate 110 may be made of a light-transmitting material through which light can pass, and the rear substrate 120 may be made of a sheet made of a light-transmitting material, a non-transmitting material, or a reflective material. For example, the front substrate 110 may be composed of a glass substrate, etc., and the rear substrate 120 may have a TPT (Tedlar/PET/Tedlar) type, or a base film (e.g., polyethylene terephthalate (PET )) may include a polyvinylidene fluoride (PVDF) resin layer formed on at least one surface thereof.

However, the present invention is not limited thereto. Accordingly, the first and second sealing materials 131 and 132, the front substrate 110, or the rear substrate 120 may include various materials other than those described above and may have various shapes. For example, the front substrate 110 or the rear substrate 120 may have various forms (eg, substrates, films, sheets, etc.) or materials.

An example of a solar cell included in a solar panel according to an embodiment of the present invention and a wiring material connected thereto will be described in more detail with reference to FIG. 3.

3 is a partial cross-sectional view illustrating an example of a solar cell included in the solar panel of FIG. 1 and a wiring member connected thereto.

Referring to FIG. 3, the solar cell 150 includes a semiconductor substrate 160, conductive regions 20 and 30 formed on or on the semiconductor substrate 160, and a conductive region 20. And electrodes 42 and 44 connected to 30). The conductivity type regions 20 and 30 may include a first conductivity type region 20 having a first conductivity type and a second conductivity type region 30 having a second conductivity type. The electrodes 42 and 44 may include a first electrode 42 connected to the first conductivity type region 20 and a second electrode 44 connected to the second conductivity type region 30. In addition, first and second passivation layers 22 and 32, anti-reflection layers 24, and the like may be further included.

The semiconductor substrate 160 may be formed of a crystalline semiconductor including a single semiconductor material (eg, a group 4 element). For example, the semiconductor substrate 160 may be formed of a single crystal or polycrystalline semiconductor (for example, single crystal or polycrystalline silicon). In particular, the semiconductor substrate 160 may be composed of a single crystal semiconductor (eg, a single crystal semiconductor wafer, more specifically, a single crystal silicon wafer). Then, the solar cell 150 is based on the semiconductor substrate 160 made of a single crystal semiconductor with high crystallinity and low defects. Accordingly, the solar cell 150 may have excellent electrical characteristics.

The front surface and/or the rear surface of the semiconductor substrate 160 may be textured to have irregularities. The irregularities may have, for example, a pyramid shape having an irregular size and an outer surface of the semiconductor substrate 160 having a (111) surface. When unevenness is formed on the front surface of the semiconductor substrate 160 by texturing and the surface roughness of the front surface is increased, reflectance of light incident through the front surface of the semiconductor substrate 160 or the like may be lowered. Accordingly, the amount of light reaching the pn junction formed by the base region 10 and the first or second conductivity type regions 20 and 30 can be increased, thereby minimizing light loss. In this embodiment, it is illustrated that irregularities are formed on each of the front and rear surfaces of the semiconductor substrate 160. However, the present invention is not limited thereto. Accordingly, irregularities may be formed on at least one of the front and rear surfaces of the semiconductor substrate 160, and irregularities may not be formed on the front and rear surfaces of the semiconductor substrate 160.

In this embodiment, the semiconductor substrate 160 includes a base region 10 having a first or second conductivity type by doping with a first or second conductivity type dopant at a low doping concentration. In this case, the base region 10 of the semiconductor substrate 160 may have a lower doping concentration, higher resistance, or a lower carrier concentration than one of the first and second conductivity type regions 20 and 30 having the same conductivity type. . For example, in this embodiment, the base region 10 may have a second conductivity type.

In addition, the semiconductor substrate 160 may include a first conductivity type region 20 and a second conductivity type region 30. In the present embodiment, the base region 10 and the conductivity type regions 20 and 30 constituting the semiconductor substrate 160 are regions having a crystal structure of the semiconductor substrate 160 and having different conductivity types and doping concentrations. For example, a region having a first conductivity type including a first conductivity type dopant in the semiconductor substrate 160 is defined as a first conductivity type region 20, and includes a second conductivity type dopant at a low doping concentration. A region having the second conductivity type is defined as the base region 10, and a region having the second conductivity type including the second conductivity type dopant at a higher doping concentration than the base region 10 is the second conductivity type region 30 ) Can be defined.

The first and second conductivity type regions 20 and 30 may be formed entirely on the front and rear surfaces of the semiconductor substrate 160, respectively. Here, the term “completely formed” includes not only all formed without gaps, but also inevitably not forming some areas. Accordingly, the first and second conductivity-type regions 20 and 30 can be formed with a sufficient area without separate patterning.

The first conductivity type region 20 may constitute an emitter region forming a pn junction with the base region 10. The second conductivity type region 30 may constitute a rear electric field region forming a back surface field. The rear electric field region serves to prevent loss of carriers due to recombination on the surface of the semiconductor substrate 160 (more precisely, the rear surface of the semiconductor substrate 160).

In the present embodiment, it is exemplified that the conductive regions 20 and 30 are formed by doping a dopant into the semiconductor substrate 160 to form a part of the semiconductor substrate 160. However, the present invention is not limited thereto. Accordingly, at least one of the first conductivity type region 20 and the second conductivity type region 30 may be formed of an amorphous, microcrystalline or polycrystalline semiconductor layer formed as a separate layer on the semiconductor substrate 160. Other variations are possible.

In addition, in the present embodiment, it is illustrated that the first conductivity type region 20 and the second conductivity type region 30 each have a homogeneous structure having a uniform doping concentration. However, the present invention is not limited thereto. Accordingly, in another embodiment, at least one of the first conductivity type region 20 and the second conductivity type region 30 may have a selective structure. In the selective structure, portions of the conductive regions 20 and 30 adjacent to the electrodes 42 and 44 may have a high doping concentration and a low resistance, and other portions may have a low doping concentration and a high resistance. In another embodiment, the second conductivity type region 30 may have a local structure. In the localized structure, the second conductivity type region 30 may be formed locally corresponding to the portion where the second electrode 44 is formed.

A first conductivity type dopant included in the first conductivity type region 20 may be an n-type or p-type dopant, and a second conductivity type dopant included in the base region 10 and the second conductivity type region 30 May be a p-type or n-type dopant. Group 3 elements such as boron (B), aluminum (Al), gallium (Ga), and indium (In) can be used as the p-type dopant, and phosphorus (P) and arsenic (As) as the n-type dopant , Bismuth (Bi), antimony (Sb), and other Group 5 elements can be used. The second conductivity type dopant of the base region 10 and the second conductivity type dopant of the second conductivity type region 30 may be the same material or different materials.

For example, the first conductivity-type region 20 may have a p-type, and the base region 10 and the second conductivity-type region 30 may have an n-type. When light is irradiated to the pn junction formed by the first conductivity type region 20 and the base region 10, electrons generated by the photoelectric effect move toward the rear surface of the semiconductor substrate 160 and are transferred to the second electrode 44. And the holes move toward the front surface of the semiconductor substrate 160 and are collected by the first electrode 42. This generates electrical energy. Then, holes having a slower movement speed than electrons move to the front surface of the semiconductor substrate 160 rather than the rear surface, thereby improving conversion efficiency. However, the present invention is not limited thereto, and the base region 10 and the second conductivity-type region 30 may have a p-type and the first conductivity-type region 20 may have an n-type.

An insulating film such as first and second passivation films 22 and 32 and an anti-reflection film 24 may be formed on the surface of the semiconductor substrate 160. Such an insulating layer may be formed of an undoped insulating layer that does not separately include a dopant.

More specifically, a re-passivation layer 22 is formed (for example, contact) on the front surface of the semiconductor substrate 160, more precisely, on the first conductivity type region 20 formed in the semiconductor substrate 160, An antireflection layer 24 may be formed (for example, contact) on the first passivation layer 22. In addition, a second passivation layer 32 may be formed (for example, contact) on the rear surface of the semiconductor substrate 160, more precisely, on the second conductivity type region 30 formed in the semiconductor substrate 160.

The first passivation film 22 and the antireflection film 24 are substantially of the semiconductor substrate 160 except for a portion corresponding to the first electrode 42 (more precisely, a portion in which the first opening 102 is formed). It can be formed all over the front. Similarly, the second passivation layer 32 is substantially over the entire rear surface of the semiconductor substrate 160 except for a portion corresponding to the second electrode 44 (more precisely, a portion where the second opening 104 is formed). Can be formed.

The first and second passivation layers 22 and 32 are formed in contact with the second conductivity type regions 20 and 30 to passivate defects existing in the surface or bulk of the conductivity type regions 20 and 30. Accordingly, the open-circuit voltage (Voc) of the solar cell 150 may be increased by removing the recombination sites of minority carriers. The antireflection layer 24 reduces the reflectance of light incident on the front surface of the semiconductor substrate 160. Accordingly, the amount of light reaching the pn junction formed at the interface between the base region 10 and the first conductivity type region 20 may be increased by lowering the reflectance of light incident through the front surface of the semiconductor substrate 160. Accordingly, it is possible to increase the short-circuit current Isc of the solar cell 150. As described above, the open-circuit voltage and short-circuit current of the solar cell 150 may be increased by the passivation layers 32 and 22 and the antireflection layer 24 to improve the efficiency of the solar cell 150.

For example, the passivation film 22, 32 or the antireflection film 24 is a silicon nitride film, a silicon nitride film containing hydrogen, a silicon oxide film, a silicon oxynitride film, an aluminum oxide film, MgF ₂ , ZnS, TiO ₂ and CeO ₂ in the group consisting of Any one selected single film or a combination of two or more films may have a multilayer structure. As an example, the first or second passivation layers 22 and 32 may include a silicon oxide layer or a silicon nitride layer having a fixed positive charge when the conductivity-type regions 20 and 30 have an n-type, and p-type In the case of having, it may include an aluminum oxide film having a fixed negative charge. As an example, the antireflection layer 24 may include silicon nitride.

However, the present invention is not limited thereto, and the passivation layers 22 and 32 and the antireflection layer 24 may include various materials. In addition, a stacked structure of an insulating layer stacked on the front surface and/or the rear surface of the semiconductor substrate 160 may be variously modified. For example, the insulating layers may be stacked in a stacking order different from the stacking order described above. Alternatively, at least one of the first and second passivation films 22 and 32 and the antireflection film 24 described above is not provided, or the first and second passivation films 22 and 32 and the antireflection film 24 are described above. Other insulating films may be provided. Other variations are possible.

The first electrode 42 is of a first conductivity type through a first opening 102 formed in an insulating film (for example, the first passivation film 22 and the antireflection film 24) located on the front surface of the semiconductor substrate 160. It is electrically connected to region 20. The second electrode 44 is electrically connected to the second conductivity type region 30 through the second opening 104 formed in the insulating film (eg, the second passivation film 32) located on the rear surface of the semiconductor substrate 160. It is connected by For example, the first electrode 42 may contact the first conductivity type region 20, and the second electrode 44 may contact the second conductivity type region 30.

The first and second electrodes 42 and 44 are made of various materials (for example, metal materials) and may be formed to have various shapes. The shapes of the first and second electrodes 42 and 44 will be described later.

As described above, in this embodiment, the first and second electrodes 42 and 44 of the solar cell 150 have a constant pattern, so that the solar cell 150 may enter the front and rear surfaces of the semiconductor substrate 160. It has a bi-facial structure. Accordingly, the amount of light used by the solar cell 150 may be increased, thereby contributing to the improvement of the efficiency of the solar cell 150.

However, the present invention is not limited thereto, and it is also possible to have a structure in which the second electrode 44 is formed entirely on the rear side of the semiconductor substrate 160. In addition, the first and second conductivity-type regions 20 and 30, and the first and second electrodes 42 and 44 may be located together on one side (for example, the rear side) of the semiconductor substrate 160, At least one of the first and second conductivity type regions 20 and 30 may be formed over both surfaces of the semiconductor substrate 160. That is, the above-described solar cell 150 is only presented as an example, and the present invention is not limited thereto.

The above-described solar cell 150 is electrically connected to the neighboring solar cell 150 by a wiring member 142 positioned on the first electrode 42 or the second electrode 44 (for example, in contact). This will be described in more detail with reference to FIG. 4 along with FIGS. 1 to 3.

4 is a perspective view schematically showing a first solar cell 151 and a second solar cell 152 included in the solar panel 100 shown in FIG. 1 and connected by a wiring member 142. In FIG. 4, the first and second solar cells 151 and 152 are only schematically illustrated mainly with the semiconductor substrate 160 and the electrodes 42 and 44.

As shown in FIG. 4, two solar cells 150 adjacent to each other among a plurality of solar cells 150 (for example, a first solar cell 151 and a second solar cell 152) are provided with a wiring member 142 ) Can be connected. In this case, the wiring member 142 includes a first electrode 42 located in front of the first solar cell 151 and a second solar cell 152 located on one side (lower left of the drawing) of the first solar cell 151. Connect the second electrode 44 located on the rear side of ). In addition, another wiring material 1420a is placed on the front side of the second electrode 44 located on the rear side of the first solar cell 151 and the other solar cell to be located on the other side (top right of the drawing) of the first solar cell 151. The located first electrode 42 is connected. And another wiring material (1420b) is the first electrode 42 located on the front side of the second solar cell 152 and the rear side of another solar cell to be located on one side (lower left of the figure) of the second solar cell 152 The second electrode 44 located at is connected. Accordingly, the plurality of solar cells 150 may be connected to each other to form one row by the wiring members 142, 1420a, 1420b. Hereinafter, the description of the wiring member 142 may be applied to all wiring members 142, 1420a, and 1420b connecting two adjacent solar cells 150, respectively.

In this embodiment, the wiring member 142 is the first electrode 42 (more specifically, the bus bar line of the first electrode 42 (reference numeral 42b in FIG. 5 )) on the front surface of the first solar cell 151. Hereinafter the same)) and extending from the first edge 161 to the second edge 162 opposite to the first edge, and the second electrode 44 from the rear side of the second solar cell 152 (more Specifically, a second portion extending from the first edge 161 to the second edge 162 opposite to the first edge 161 in a state connected to the bus bar line of the second electrode 44, and the first solar cell 151 ) May include a third portion extending from the front surface of the second edge 162 to the rear surface of the second solar cell 152 and connecting the first portion and the second portion. As a result, the wiring member 142 crosses the first solar cell 151 in a partial region of the first solar cell 151 and then crosses the second solar cell 152 in a partial region of the second solar cell 152. Can be located. As described above, the wiring member 142 has a width smaller than that of the first and second solar cells 151 and 152, and part of the first and second solar cells 151 and 152 (for example, the bus bar line 42b) The first and second solar cells 151 and 152 can be effectively connected even by a small area, since they are formed only in a portion corresponding to.

For example, the wiring material 142 may be disposed to extend along the bus bar line 42b while contacting the busbar line 42b on the busbar line 42b at the first and second electrodes 42 and 44. have. Accordingly, the wiring material 142 and the first and second electrodes 42 and 44 are in continuous contact, thereby improving electrical connection characteristics. However, the present invention is not limited thereto. It is also possible not to have the bus bar line 42b, and in this case, the wiring member 142 crosses the plurality of finger lines 42a in a direction crossing the finger line (reference numeral 42a in FIG. 5), and a plurality of finger electrodes ( 42a) may be arranged to contact and connect, but the present invention is not limited thereto.

When viewed on the basis of one surface of each solar cell 150, a plurality of wiring members 142 may be provided to improve electrical connection characteristics of adjacent solar cells 150. In particular, in this embodiment, the wiring member 142 is composed of a wire having a smaller width than a ribbon having a relatively wide width (for example, 1mm to 2mm) used in the past, based on one side of each solar cell 150 As a result, a larger number of wiring members 142 than the number of existing ribbons (eg, 2 to 5) is used.

As an example, the wiring material 142 is a core layer 142a made of metal and a solder layer that is coated with a thin thickness on the surface of the core layer 142a and includes a solder material to enable soldering with the electrodes 42 and 44 (142b) may be included. For example, the core layer 142a may include Ni, Cu, Ag, and Al as major materials (eg, a material containing 50 wt% or more, more specifically, a material containing 90 wt% or more). The solder layer 142b may include materials such as Pb, Sn, SnIn, SnBi, SnPb, SnPbAg, SnCuAg, and SnCu as a main material. However, the present invention is not limited thereto, and the core layer 142a and the solder layer 142b may include various materials.

In this way, if a wire having a width smaller than that of the existing ribbon is used as the wiring material 142, material cost can be greatly reduced. In addition, since the wiring member 142 has a width smaller than that of the ribbon, a sufficient number of wiring members 142 are provided to minimize the moving distance of the carrier, thereby improving the output of the solar panel 100.

In addition, the wire constituting the wiring member 142 according to the present embodiment may include a rounded portion. That is, the wire constituting the wiring member 142 may have a circular, elliptical, or curved cross-section or a rounded cross-section. Accordingly, the wiring member 142 may induce reflection or diffuse reflection. Accordingly, the light reflected from the rounded surface of the wire constituting the wiring material 142 is reflected or totally reflected on the front substrate 110 or the rear substrate 120 located at the front or rear of the solar cell 150, and thus the solar cell 150 ) To re-enter. Accordingly, the output of the solar panel 100 can be effectively improved. However, the present invention is not limited thereto. Accordingly, the wire constituting the wiring member 142 may have a polygonal shape such as a square, and may have various other shapes.

In this embodiment, the wiring member 142 may have a width (or diameter) of 250 μm to 500 μm. For reference, in this embodiment, the thickness of the solder layer 142b is very small and may have various thicknesses depending on the location of the wiring member 142, so the width of the wiring member 142 can be seen as the width of the core layer 142a. have. Alternatively, the width of the wiring member 142 may be viewed as a width passing through the center of the wiring member 142 on the line portion (reference numeral 421 in FIG. 5 ). The current generated by the solar cell 150 by the wire-shaped wiring member 142 having such a width is efficiently transferred to an external circuit (for example, a bypass diode of a bus ribbon or a junction box) or another solar cell 150. Can be delivered. In this embodiment, the wiring member 142 may be individually positioned and fixed on the electrodes 42 and 44 of the solar cell 150 without being inserted into a separate layer or film. If the width of the wiring member 142 is less than 250 μm, the strength of the wiring member 142 may not be sufficient, and the connection area of the electrodes 42 and 44 is very small, so that the electrical connection characteristics are poor and the adhesive force may be low. When the width of the wiring member 142 exceeds 500 um, the cost of the wiring member 142 increases and the wiring member 142 obstructs the incidence of light incident on the front surface of the solar cell 150, thereby increasing the shading loss. I can. In addition, the force applied from the wiring member 142 in the direction away from the electrodes 42 and 44 may be increased, so that the adhesion between the wiring member 142 and the electrodes 42 and 44 may be low, and the electrodes 42 and 44 or the semiconductor substrate Problems such as cracking may occur in (160). For example, the width of the wiring member 142 may be 350um to 450um (especially, 350um to 400um). In this range, the output can be improved while increasing the adhesion to the electrodes 42 and 44.

In this case, the number of wiring members 142 may be 6 to 33 based on one surface of the solar cell 150. More specifically, when the width of the wiring member 142 is 250um or more and less than 300um, the number of wiring members 142 may be 15 to 33. When the width of the wiring member 142 is 300um or more and less than 350um, the number of wiring members 142 may be 10 to 33. When the width of the wiring member 142 is 350um or more and less than 400um, the number of wiring members 142 may be 8 to 33. When the width of the wiring member 142 is 400um to 500um, the number of wiring members 142 may be 6 to 33. In addition, when the width of the wiring member 142 is 350um or more, even if the number of wiring members 142 exceeds 15, it is difficult to increase the output of the solar panel 100 any more. In addition, when the number of wiring members 142 increases, a burden may be placed on the solar cell 150. In consideration of this, when the width of the wiring member 142 is 350um or more and less than 400um, the number of wiring members 142 may be 8 to 15. When the width of the wiring member 142 is 400um to 500um, the number of wiring members 142 may be 6 to 15. In this case, in order to further improve the output of the solar panel 100, the number of wiring members 142 may be 10 or more (for example, 12 to 13). However, the present invention is not limited thereto, and the number of wiring members 142 and the number of busbar lines 42b accordingly may have different values.

In this case, the pitch of the wiring member 142 (or the pitch of the bus bar line 42b) may be 4.75mm to 26.13mm. This is in consideration of the width and number of wiring members 142. For example, when the width of the wiring member 142 is 250um or more and less than 300um, the pitch of the wiring member 142 may be 4.75mm to 10.45mm. When the width of the wiring member 142 is 300um or more and less than 350um, the pitch of the wiring member 142 may be 4.75mm to 15.68mm. When the width of the wiring member 142 is 350um or more and less than 400um, the pitch of the wiring member 142 may be 4.75mm to 19.59mm. When the width of the wiring member 142 is 400um to 500um, the pitch of the wiring member 142 may be 4.75mm to 26.13mm. More specifically, when the width of the wiring member 142 is 350um or more and less than 400um, the pitch of the wiring member 142 may be 10.45mm to 19.59mm. When the width of the wiring member 142 is 400um to 500um, the number of wiring members 142 may be 10.45mm to 26.13mm. However, the present invention is not limited thereto, and the pitch of the wiring member 142 and the pitch of the busbar line 42b according thereto may have different values.

In this embodiment, the first electrode 42 (or the second electrode 44), the wiring material 142, the electrode region (reference numeral EA in FIG. 5), etc. are in the first direction (a direction parallel to the finger line 42a). ) And in the second direction (a direction parallel to the bus bar line 42b or the wiring member 142). Accordingly, current flow can be stably implemented. However, the present invention is not limited thereto.

An example of the electrodes 42 and 44 of the solar cell 150 to which the wiring member 142 according to the embodiment of the present invention may be attached will be described in detail with reference to FIG. 5 along with FIGS. 1 to 4. Hereinafter, the second electrode 44 will be described after the first electrode 42 is described in detail with reference to FIG. 5.

5 is a partial plan view showing an enlarged portion A of FIG. 4.

Referring to FIGS. 1 to 5, in this embodiment, the first electrode 42 extends in a first direction (a horizontal direction in the drawing) and includes a plurality of finger lines 42a positioned parallel to each other. In addition, a busbar line 42b extending in a second direction (a vertical direction in the drawing) crossing (eg, orthogonal to) the finger line 42a to which the wiring member 142 is connected or attached may be further included. Since the busbar line 42b may be disposed corresponding to the wiring member 142, the description of the number and pitch of the wiring member 142 may be applied as it is to the number and pitch of the busbar lines 42b. Hereinafter, between the two adjacent busbar lines 42b among the plurality of busbar lines 42b, each is referred to as an electrode area EA. In this embodiment, since a plurality of wiring members 142 (for example, six or more) are provided based on one surface of the solar cell 150, a plurality of electrode areas EA (that is, one than the number of wiring members 142) It may be provided in a small number).

The plurality of finger lines 42a may be spaced apart from each other while having a uniform width and pitch. In the drawing, it is illustrated that the finger lines 42a are formed parallel to each other in the first direction and are parallel to the main edges (in particular, the first and second edges 161 and 162) of the solar cell 150, but the present invention It is not limited.

As an example, the finger line 42a of the first electrode 42 may have a width of 35um to 120um. In addition, the finger lines 42a of the first electrode 42 may have a pitch of 1.2 mm to 2.8 mm, and the number of finger lines 42a may be 55 to 130 in a direction crossing the finger lines 42a. have. These widths and pitches can be formed under easy process conditions, and are limited to minimize shading loss due to the finger lines 42a while effectively collecting current generated by photoelectric conversion. The thickness of the finger lines 42a may be easily formed during processing and may have a desired specific resistance. However, the present invention is not limited thereto, and the width and pitch of the finger lines 42a may be variously changed according to changes in process conditions, the size of the solar cell 150, and the material constituting the finger lines 42a.

In this case, the width of the wiring member 142 may be smaller than the pitch of the finger line 42a and may be larger than the width of the finger line 42a. However, the present invention is not limited thereto, and various modifications are possible.

For example, the busbar line 42b may be continuously formed from a portion adjacent to the first edge 161 to a portion adjacent to the second edge 162 in the electrode area EA. As mentioned above, the bus bar line 42b may be positioned to correspond to a portion where the wiring member 142 for connection with the neighboring solar cell 150 is positioned. The bus bar line 42b may be provided to correspond to the wiring member 142 one-to-one. Accordingly, in the present embodiment, the busbar lines 42b may be provided in the same number as the wiring member 142 based on one surface of the solar cell 150.

The bus bar line 42b has a relatively narrow width along a direction in which the wiring member 142 is connected in the electrode area EA, and a line portion 421 that extends long and has a wider width than the line portion 421. Thus, a pad portion 422 for increasing a connection area with the wiring member 142 may be provided. The area of blocking light incident on the solar cell 150 can be minimized by the narrow line portion 421, and the wiring material 142 and the busbar line 42b are separated by the wide pad portion 422. It can improve adhesion and reduce contact resistance. The pad portion 422 has a width greater than that of the line portion 421 and is a region to which the wiring material 142 is substantially attached. The wiring member 142 may be attached to the line portion 421, or the wiring member 142 may be placed on the line portion 421 in a state in which the wiring member 142 is not attached to the line portion 421.

The width of the pad portion 422 measured in the first direction may be larger than the widths of the line portion 421 and the finger line 42a, respectively.

In this embodiment, it is illustrated that the line portion 421 of the bus bar line 42b is provided to correspond to the wiring member 142. More specifically, conventionally, a bus bar electrode having a width that is much larger than that of the finger line 42a was positioned corresponding to the wiring material 142. In this embodiment, the bus bar line 42b having a width much smaller than that of the bus bar electrode is The line part 421 is located. In this embodiment, the line part 421 may provide a path through which a carrier can bypass when some of the finger lines 42a are disconnected by connecting a plurality of finger lines 42a.

In the present specification, the busbar electrode refers to an electrode portion formed in a direction crossing the finger line to correspond to the ribbon and having a width of 12 times or more (usually 15 times or more) of the width of the finger line. Busbar electrodes have a relatively large width, so they are usually formed in two or three numbers. In this embodiment, the line portion 421 of the bus bar line 42b is formed in a direction crossing the finger line 42a to correspond to the wiring member 142, and is not more than 10 times the width of the finger line 42a. It may refer to an electrode portion having a width.

For example, the width of the line portion 421 may be 0.5 to 10 times the width of the finger line 42a. If the ratio is less than 0.5 times, the width of the line portion 421 may be reduced, so that the effect of the line portion 421 may not be sufficient. When the ratio exceeds 10 times, the width of the line portion 421 may increase, and thus light loss may increase. In particular, in the present embodiment, since the wiring member 142 is provided in a large number, the line portion 421 is also provided in a large number, so that light loss may be greater. More specifically, the width of the line portion 421 may be 0.5 to 7 times the width of the finger line 42a. Light loss can be further reduced by setting the ratio to 7 times or less. For example, referring to light loss, the width of the line portion 421 may be 0.5 to 4 times the width of the finger line 42a. More specifically, the width of the line portion 421 may be 0.5 to 2 times the width of the finger line 42a. In this range, the efficiency of the solar cell 150 can be greatly improved.

Alternatively, the width of the line portion 42b may be equal to or smaller than the width of the wiring member 142. When the wiring member 142 has a circular, elliptical, or rounded shape, the width or area that contacts the line portion 421 from the lower portion of the wiring member 142 is not large, so the width of the line portion 421 is set as the wiring member 142 This is because it can be equal to or smaller than the width of. If the width of the line portion 421 is relatively small as described above, the area of the first electrode 42 is reduced, thereby reducing the material cost of the first electrode 42.

For example, a ratio of the width of the wiring member 142 to the width of the line portion 421 may be 1:0.07 to 1:1. If the ratio is less than 1:0.07, the width of the line portion 421 is too small, and electrical characteristics may be deteriorated. When the ratio exceeds 1:1, the contact characteristics with the line portion 421 cannot be greatly improved, and only the area of the first electrode 42 is increased, thereby increasing light loss and increasing material cost. For example, if light loss, material cost, etc. are further considered, the ratio may be 1:0.1 to 1:0.5 (more specifically, 1:0.1 to 1:0.3).

Alternatively, the width of the line portion 421 may be 35um to 350um. When the width of the line portion 421 is less than 35 μm, the width of the line portion 421 is too small, and electrical characteristics, etc. may be deteriorated. If the width of the line portion 421 exceeds 350 μm, the contact characteristics with the line portion 421 cannot be greatly improved, and only the area of the first electrode 42 is increased, thereby increasing light loss and increasing material cost. . For example, in consideration of light loss, material cost, and the like, the width of the line portion 421 may be 35um to 200um (more specifically, 35um to 120um).

However, the present invention is not limited thereto. Accordingly, the width of the line portion 421 can be variously modified within a range that minimizes shading loss while effectively transmitting the current generated by photoelectric conversion.

In addition, the width of the pad part 422 may be greater than the width of the line part 421 and may be equal to or greater than the width of the wiring member 142. The pad portion 422 is a portion for increasing the contact area with the wiring member 142 to improve adhesion to the wiring member 142, so it has a larger width than the line portion 421 and has a width equal to or greater than that of the wiring member 142. will be.

For example, a ratio of the width of the wiring member 142: the width of the pad portion 422 may be 1:1 to 1:5. If the ratio is less than 1:1, the width of the pad portion 422 may not be sufficient, so that the adhesive force between the pad portion 422 and the wiring member 142 may not be sufficient. When the ratio exceeds 1:5, the area in which light is lost by the pad portion 422 increases, and thus shading loss may be large. In consideration of adhesion, light loss, and the like, the ratio may be 1:2 to 1:4 (more specifically 1:2.5 to 1:4).

Alternatively, as an example, the width of the pad portion 422 may be 0.25mm to 2.5mm. If the width of the pad portion 422 is less than 0.25 mm, the contact area with the wiring member 142 may not be sufficient, and thus the adhesion between the pad portion 422 and the wiring member 142 may not be sufficient. When the width of the pad portion 422 exceeds 2.5 mm, the area in which light is lost by the pad portion 422 increases, and thus shading loss may be large. For example, the width of the pad part 422 may be 0.8mm to 1.5mm.

In addition, the length of the pad part 422 may be greater than the width of the finger line 42a. For example, the length of the pad portion 422 may be 0.035 mm to 30 mm. If the length of the pad portion 422 is less than 0.035 mm, the contact area with the wiring member 142 may not be sufficient, so that the adhesion between the pad portion 422 and the wiring member 142 may not be sufficient. When the length of the pad portion 422 exceeds 30 mm, an area in which light is lost by the pad portion 422 increases, and thus shading loss may be large.

Alternatively, for example, a ratio of the width of the finger line 42a to the length of the pad portion 422 may be 1:1.1 to 1:20. Within this range, the adhesion between the pad portion 422 and the wiring member 142 may be improved by increasing the adhesion area between the pad portion 422 and the wiring member 142.

Alternatively, as an example, a ratio of the width of the wiring member 142 to the length of the pad portion 422 may be 1:1 to 1:10. If the ratio is less than 1:1, the length of the pad portion 422 may not be sufficient, so that the adhesion between the pad portion 422 and the wiring member 142 may not be sufficient. When the ratio exceeds 1:10, the area in which light is lost by the pad portion 422 increases, and thus shading loss may be large. Considering more adhesion, light loss, and the like, the ratio may be 1:3 to 1:6.

In one busbar line 42b, 6 to 24 pad portions 422 (for example, 12 to 22) may be disposed. The plurality of pad portions 422 may be disposed at intervals. For example, one for every 2 to 10 finger lines 42a may be located. Accordingly, a portion in which the bonding area between the bus bar line 42b and the wiring member 142 is increased is regularly provided, so that the adhesion between the busbar line 42b and the wiring member 142 can be improved. Alternatively, a plurality of pad portions 422 may be disposed so that the distances between the two pad portions 422 have different values. In particular, the pad portion 422 may be disposed at a high density at the end of the bus bar line 42b, where a force greater than the other portion (ie, the central portion of the busbar line 42b) acts. Other variations are possible.

In the above description, the first electrode 42 was mainly described with reference to FIG. 5. The second electrode 44 may include a finger line and a bus bar line respectively corresponding to the finger line 42a and the bus bar line 42b of the first electrode 42. The contents of the finger line 42a and the bus bar line 42b of the first electrode 42 may be applied to the finger line and the bus bar line of the second electrode 44 as it is. In this case, the description of the first conductivity type region 20 related to the first electrode 42 may be a description of the second conductivity type region 30 related to the second electrode 44. In addition, the description of the first passivation film 22 and the antireflection film 24 and the opening 102 related to the first electrode 42 is a second passivation film 30 related to the second electrode 44, and It may be a description of the opening 104.

At this time, the width, pitch, and number of the finger lines 42a of the first electrode 42 and the line portions 421 and pad portions 442 of the busbar line 42b are determined by the fingers of the second electrode 44. The lines and the width, pitch, and number of line portions and pad portions of the busbar lines may be the same. Alternatively, the width, pitch, and number of the finger line 42a of the first electrode 42 and the line portion 421 and the pad portion 422 of the busbar line 42b are determined by the fingers of the second electrode 44. The line and the width, pitch, and number of line portions and pad portions of the busbar line may be different. For example, the width of the electrode portion of the second electrode 44 having relatively less light incidence may be larger than the width of the electrode portion of the first electrode 42 corresponding thereto, and the pitch of the finger line of the second electrode 44 is It may be smaller than the pitch of the finger lines 42a of the first electrode 42 corresponding thereto. Other variations are possible. However, the number and pitch of the bus bar lines 42b of the first electrode 42 may be the same as the number and pitch of the bus bar lines of the second electrode 44, respectively. In addition, it is possible that the first electrode 42 and the second electrode 44 have different planar shapes. For example, the second electrode 44 may be formed entirely on the rear surface of the semiconductor substrate 160. Its various variations are possible.

According to the present embodiment, by using the wiring member 142 in the form of a wire, light loss due to diffuse reflection, etc. can be minimized, the number of wiring members 142 can be increased, and the pitch of the wiring member 142 can be reduced to reduce the moving path of the carrier. . Accordingly, the efficiency of the solar cell 150 and the output of the solar cell panel 100 may be improved. As described above, a large number of wire-shaped wiring members 142 having a cross-sectional shape such as a circular shape having a small width W1 should be attached to the solar cell 150. Accordingly, there is a need for a wiring material attachment device capable of attaching to the solar cell 150 so as to have a high adhesive force even in the form of a wire, and improving productivity by attaching a large number of wiring members 142 together.

On the other hand, in this embodiment, the yield strength of the wiring material 142 attached to the solar cell 142 may be 110 mpa or less (for example, 67 mpa to 110 mpa), which is the apparatus for attaching a wiring material and the same. This is because the wiring member 142 is attached by the attachment method used. An apparatus for attaching a wiring member and a method for attaching a wiring member using the same according to the present embodiment will be described in detail with reference to FIGS. 6 to 16.

6 is a block diagram schematically showing a part of an apparatus for attaching a wiring member for a solar panel according to an embodiment of the present invention. 7 is a block diagram schematically showing another part of an apparatus for attaching a wiring member for a solar panel according to an embodiment of the present invention. And FIG. 8 is a conceptual diagram schematically showing a worktable, a heat source, and a supply of an upper fixing member of an apparatus for attaching a wiring member for a solar panel according to an embodiment of the present invention. In Fig. 7 for a simplified drawing, the upper fixing member supply and the solar cell supply are not shown.

6 to 8, the solar panel wiring material attachment device (hereinafter, "wire material attachment device") 200 according to the present embodiment is a process by unwinding the wiring material 142 wound around the winding roll 211 Fixing the wiring material supply unit 210 provided in the direction, the flux unit 220 for applying the flux to the provided wiring material 142, the drying unit 230 for drying the flux, and the wiring material 142 to the jig 243 It may include a wiring member fixing portion 240 and an attachment portion 250 for attaching the wiring member 142 to the solar cell 150.

Accordingly, in the wiring material supply unit 210, the process direction passing through the flux unit 220, the drying unit 230, the wiring material fixing unit 240 and the attachment unit 250 by unwinding the wiring material 142 wound around the winding roll 212 And the flux unit 220, the drying unit 230, the wiring member fixing unit 240, and the attaching unit 250 perform a step of fixing the wiring member 142 to the solar cell 150. . This will be described in more detail.

The winding roll 211 may have a cylindrical shape, and the wiring member 142 is wound in the circumferential direction of the cylinder. The wiring member 142 wound around the winding roll 211 is unwound from the winding roll 211 and provided in the process direction. In the present embodiment, a plurality of winding rolls 211 may be provided equal to the number of wiring members 142 to be disposed based on one surface of the solar cell 150. The plurality of winding rolls 211 are arranged horizontally and/or vertically at regular intervals, and the plurality of wiring members 142 unwound from the plurality of winding rolls 211 are arranged on the same plane by the alignment member 217. ), it can be moved in an aligned state separated from each other by the interval (pitch) to be arranged.

In this way, when the wiring members 142 are moved in a parallel arrangement, a process necessary for the plurality of wiring members 142 to be attached to one surface of each solar cell 150 is simultaneously performed and can be attached to the solar cell 150 at the same time. So the process can be simplified. However, the present invention is not limited thereto, and various modifications are possible.

In this embodiment, the wiring member 142 is unwound and aligned so as to pass the end of the winding roll 211 in the longitudinal direction (the x-axis direction in the drawing). Here, the longitudinal direction refers to a surface on which the wiring member 142 is wound or is disposed to be orthogonal to or almost orthogonal (eg, 80° to 100°) or a surface on which the wiring member 142 is wound. It may be a direction connecting both ends of the winding roll 211 positioned therebetween. This will be described in detail with reference to FIG. 9 along with FIG. 6.

9 is an exploded perspective view showing an enlarged portion corresponding to one winding roll 211 in the wiring material supply unit 210 shown in FIG. 6.

9, the wiring material supply unit 210, the winding roll 211 wound around the wiring member 142 and the wiring member 142 wound around the winding roll 211 by respectively corresponding to the winding roll 211 It may include a loosening control member 213 for stably loosening in the direction. In this embodiment, the unwinding control member 213 releases the wiring member 142 wound around the winding roll 211 so that it passes through one end in the length direction of the winding roll 211 to reduce the change in yield strength of the wiring member 142. Can be minimized.

In the present embodiment, the winding roll 211 is positioned one at each end of the main body part 211a where the wiring member 142 is located and the both ends of the main body part 211a, so that the wiring member 142 is outside the main body part 211a. It may include an end portion (211b) to prevent separation. The body portion 211a may have a cylindrical shape to prevent damage or deformation of the wiring member 142, and the end portions 211b have a shape extending from both ends of the body portion 211a to the outside by a predetermined length. Can have In this embodiment, it is illustrated that the end portion 211b has an area larger than that of the body portion 211a so that the wiring member 142 is not separated. Accordingly, separation of the wiring member 142 can be effectively prevented by a simple structure. In addition, the winding roll 211 may include a hollow 211c penetrating the winding roll 211 along the length direction to minimize weight and reduce manufacturing cost. And it can be easily seated on the fixed frame 215 by the hollow (211c). However, the present invention is not limited thereto, and various modifications may be made to the shape and structure of the winding roll 211.

The wiring member 142 may be wound around the body portion 211a in a direction substantially intersecting (eg, orthogonal) to the circumferential direction of the body portion 211a or the length direction of the winding roll 211. This is because when the wiring member 142 is wound in this direction, the wiring member 142 can be wound as tightly as possible without damage or deformation on the body portion 211a. However, the present invention is not limited thereto.

This winding roll 211 may be fixed to the fixing frame 215. For example, the fixing frame 215 may include a frame portion 215a including a plate-shaped fixing plate 215b serving as a support to which the plurality of winding rolls 211 are fixed together. The frame portion 215a may be composed of various structures, materials, etc. capable of stably supporting the plurality of winding rolls 211.

The fixing plate 215b may be provided with a fixing rod 215c that can be fixed by inserting the winding roll 211. By positioning the winding roll 211 so that the fixing rod 215c is located in the hollow 211c of the winding roll 211, the winding roll 211 can be easily and stably fixed to the fixing plate 215a. And by pulling out the winding roll 211, the winding roll 211 can be easily separated from the fixing rod 215c, so that the winding roll 211 can be easily replaced. At this time, the winding roll 211c may be fixed to the fixing rod 215c so as not to be rotatable. The fixing rod 215c may be formed to correspond to the shape of the hollow 211c of the winding roll 211 so that the winding roll 211 can be stably fixed. In this embodiment, as an example, the fixing rod 215c may have a bar shape having a cylindrical or circular cross-sectional shape.

In addition, the fixing frame 215 may further include an external fixing portion 215d to surround the outside of each winding roll 211. The external fixing part 215d may be manufactured separately from the frame part 215a and fixed to the fixing plate 215b.

The external fixing portion 215d is located outside the winding roll 211 to prevent problems such as damage to the wiring member 142 wound around the winding roll 211 by an external impact. The external fixing portion 215d may have a cylindrical shape having an empty space therein so as to surround the outside of each winding roll 211, and an opening 215e may be located on the side of the external fixing portion 215d. have. When the external fixing portion 215d has an opening 215e and the wiring member 142 is unwound from the winding roll 211, it can be confirmed whether the wiring member 142 is well unwound. The external fixing portion 215d has a length shorter than the length of the winding roll 211 so that one end portion 211d of the winding roll 211 from which the wiring member 142 is unwound can be located outside the external fixing portion 215d. have. Accordingly, it is possible to minimize the influence of the external fixing portion 215d when the wiring member 142 is released. However, it is also possible for the external fixing portion 215d to have a length equal to or longer than the length of the winding roll 211.

However, the present invention is not limited thereto, and the structure and method in which the winding roll 211 is fixed may be variously modified.

In this embodiment, the lengthwise direction of the winding roll 211 fixed to the fixing frame 215 may be disposed parallel to the bottom surface or may have a constant inclination with the bottom surface (xy plane). In particular, the lengthwise direction of the winding roll 211 fixed to the fixing frame 215 may be disposed while having an acute angle A with the bottom surface. For example, in the winding roll 211 fixed to the fixed frame 215, one end portion 211b from which the wiring member 142 is unwound may be positioned at an inclined position on the floor so that it is higher than the other end portion 211b opposite thereto. I can. In addition, the wiring member 142 passing through the flux unit 220, the drying unit 230, the fixing unit 240 and the attachment unit 250 is located farthest from the bottom surface of the winding roll 211 (that is, the wiring member ( 142) is positioned higher than the upper portion of the end portion 211b from which it is released. Then, when the wiring member 142 is unwound from the winding roll 211, other forces are applied to the winding roll 211 and the wiring member 142 to a minimum, so that the wiring member 142 can be easily released without deformation.

In this embodiment, the winding rolls 211 may be arranged to form a plurality of rows. This is to minimize the installation space of the wiring material supply unit 210 and the moving distance of the wiring material 142 because it is necessary to supply six or more wiring materials 142 to one solar cell 150 on a per surface basis. On the other hand, if the plurality of winding rolls 211 are arranged to form one row, the installation space of the wiring material supply unit 210 must be increased, and the moving path of the wiring material 142 provided from the winding roll 211 located farther increases, so that the wiring material 142 ) May be twisted or the characteristics of the wiring member 142 may change while moving. Although the drawing illustrates that the winding rolls 211 are arranged to form two rows, the winding rolls 211 may be arranged to form three or more rows depending on the number of wiring materials 142 required for the solar cell 150. .

And in the drawings, it is illustrated that all the winding rolls 211 are arranged while having an acute angle (A) with the bottom surface. Accordingly, the wiring member 142 of each winding roll 211 can be easily unwound. However, the present invention is not limited thereto. For example, all of the winding rolls 211 may be disposed parallel to the bottom surface. In addition, when the number of the winding rolls 211 and the installation position are changed, the angle formed by the winding roll 211 and the bottom surface may be adjusted differently. This will be described later with reference to FIG. 20.

The process direction of the wiring material 142 passing through the flux unit 220, the drying unit 230, the fixing unit 240, and the attachment unit 250 may be parallel to the bottom surface (xy plane in the drawing). Accordingly, structural stability of the flux unit 220, the drying unit 230, the fixing unit 240, and the attachment unit 250 may be improved. Accordingly, the length direction of the winding roll 211 may be inclined to be parallel to the process direction of the wiring member 142 or to have an obtuse angle (inclination angle) B with the process direction of the wiring member 142. In particular, the lengthwise direction of the winding roll 211 may be positioned to be inclined to have an obtuse angle B with the process direction of the wiring member 142. Accordingly, the wiring member 142 can be stably released from the winding roll 211 and moved in the process direction. However, the present invention is not limited thereto, and the process direction of the wiring member 142 passing through the flux unit 220, the drying unit 230, the fixing unit 240, and the attachment unit 250 may be different from that described above.

The unwinding control member 213 serves to unwind the wiring member 142 from the winding roll 211 to reach the alignment member 217. The unwinding control member 213 is located at one end portion 211b of the winding roll 211 from which the wiring member 142 is unwound, so that the wiring member 142 passes through one end portion 211b of the winding roll 211 and is aligned. To reach member 217.

More specifically, the unwinding control member 213 passes the wiring member 142 through one end portion 211b of the winding roll 211 and is parallel to the length direction of the winding roll 211 or the length direction of the winding roll 211 It can be released while having an acute angle (inclination) (C). That is, the wiring member 142 unwound from the winding roll 211 may change the lengthwise direction and the angle formed by the winding roll 211 until it reaches the alignment member 217, but the winding roll 211 and the alignment member The entire portion of the wiring member 142 positioned between the 217 may be parallel to the length direction of the winding roll 211 or may have an acute angle C.

In this embodiment, when the wiring member 142 is unwound by the unwinding control member 213, the winding roll 211 may be fixed without rotating. Here, that the take-up roll 211 does not rotate means that the take-up roll 211 is not intentionally rotated, and although it is not intended during the process, there is some vibration in the take-up roll 211 or there is a slight rotation due to this. Include.

In this embodiment, the unwind control member 213 may include a rotation member 2130 positioned at one end portion 211b of the winding roll 211. For example, the rotation member 2130 may be rotatably fixed to the fixing rod 215c adjacent to one end portion 211b of the winding roll 211. The rotating member 2130 may rotate in a direction opposite to the direction in which the wiring member 142 is wound by the winding roll 211 to unwind the wiring member 142 in a direction opposite to the direction in which the wiring member 142 is wound.

As an example, the rotation member 2130 comprises a rotation fixing part 2130a that constitutes a central part and is rotatably fixed to the fixing rod 215c, and protrudes from the rotation fixing part 2130a toward the outside, and the wiring member 142 ) And may include an extension part 2130b having a wiring material passage hole WH1 passing therethrough.

As an example, the rotation fixing part 2130a may include a ball bearing that minimizes kinetic frictional resistance by a ball positioned between the inner diameter part and the outer diameter part. The rotating member 2130 may be rotatably fixed to the fixing rod 215c by inserting and fixing the fixing rod 215c in the inner diameter of the rotation fixing part 2130a. Since various known structures may be applied to the structure of the ball bearing, a detailed description thereof will be omitted.

*The extension part 2130b has a relatively narrow width and extends in a direction parallel to the radial direction of the winding roll 211 and a direction or circumference crossing it at the end of the extension part 2130c. It may include a bent portion 2130d that is bent in a direction. A wiring material passage hole WH1 through which the wiring material 142 passes may be positioned at an end of the extension portion 2130c or in the bent portion 2130d. Thereby, the wiring material passage hole (WH1) can be located at a sufficiently far distance from the fixing portion 2130a, so that the wiring material 142 wound around the outer circumferential surface of the body portion 211a can be smoothly released without being disturbed by the end portion 211b. I can. For example, the wiring material passage hole WH1 may be located outside the outer edge of the end portion 211b of the winding roll 211. Further, the rotation member 2130 may rotate more smoothly by the bent portion 2130d. In the drawing, it is illustrated that two extension portions 2130b are provided while being symmetrical to each other, but one or three or more extension portions 2130b may be provided.

In addition, a driving unit 2130e for rotating the rotating member 2130 may be further provided. Various structures, methods, such as a motor, may be applied as the driving unit 2130e. In the drawings, it is illustrated that the rotating member 2130 is positioned at the one end portion 211b of the winding roll 211 with the rotating member 2130 interposed therebetween. However, the present invention is not limited thereto, and the driving unit 2130e may be positioned at various positions capable of rotating the rotating member 2130. In addition, a separate fixing member for fixing the rotating member 2130 may be further provided.

In this embodiment, the loosening control member 213 may further include a guide member 2132 for guiding a path along which the wiring member 142 moves in response to the rotation member 2130. In the drawing, one guide member 2132 is provided corresponding to each release control member 213, but a plurality of guide members 2132 may be provided at required positions.

For example, in the present embodiment, one guide member 2132 is positioned between the rotating member 2130 and the alignment member 217 to correspond one-to-one. The guide member 2132 may have various structures including a wiring material passage hole WH2 through which the wiring material 142 passes. In the drawing, the guide member 2132 is fixed to the guide fixing portion 215f protruding from the fixing plate 215b of the fixing frame 215, and a vertical portion 2132a extending upwardly perpendicular to the bottom surface, and a vertical portion 2132a It is exemplified that it has a passage part 2132b which is located at the upper part of the unit so as to be immovable and has a wiring material passage hole WH2. For example, the vertical portion 2132a and the passage portion 2132b may be configured as a single body.

However, the present invention is not limited thereto. Referring to FIG. 10 showing a modified example of the guide member 2132, a passage portion 2132b having a wiring material passage hole WH2 may be rotatably positioned on the vertical portion 2132a. Then, even when the position of the wiring member 142 is different when unwinding from the winding roll 212, the passing portion 2132b is rotated to be positioned so as not to interfere with the movement of the wiring member 142, so that the movement of the wiring member 142 is more smooth. Can be done.

Referring back to FIGS. 6 and 9, the guide member 2132 may be positioned to be spaced apart from the rotation member 2130 by a predetermined distance. For example, the guide member 2132 may be positioned to be spaced apart from the rotation member 2130 by a distance of 10 mm to 1000 mm. If the distance between the guide member 2132 and the rotation member 2130 is less than 10 mm, the angular change when the wiring member 142 moves increases, so that the wiring member 142 may not move smoothly. When the distance between the guide member 2132 and the rotation member 2130 exceeds 1000 mm, the size of the wiring material supply unit 210 may increase. However, the present invention is not limited thereto.

The plurality of wiring members 142 guided by the guide member 2132 may be aligned so as to be spaced apart from the alignment member 217 by a pitch when attached to the solar cell 150 on the same plane. As described above, the plurality of take-up rolls 212 may not be located on the same plane, and even if the plurality of take-up rolls 212 are located on the same plane, the pitch of the take-up rolls 212 is on the solar cell 150. It may be different from the pitch of the wiring material 142 attached to. In consideration of this, the alignment member 217 is positioned so that the plurality of wiring members 142 are arranged at regular intervals on the same plane.

In this embodiment, the alignment member 217 includes a transfer roll 217a and a transfer roll 217a rotating in a state in which a plurality of wiring members 142 are placed so that the plurality of wiring members 142 can be positioned on the same plane. A spacer member 217b may be included to adjust the spacing of the plurality of wiring members 142 so that the last plurality of wiring members 142 may be spaced apart at a desired interval. In this embodiment, the path 2170 through which the wiring member 142 passes may be positioned on the side of the spacer member 217b. The transfer roll 217a and the spacer 217b rotate to prevent the wiring member 142 moving along the path 2170 from being separated or damaging the wiring member 142 even a little. However, the present invention is not limited thereto, and it is also possible that the transfer roll 217a and the spacer member 217b do not rotate.

At this time, the spacer member 217b is arranged to form a plurality of rows in the process direction of the wiring member 142, and the wiring member 142 passes to one side of the spacer member 217b constituting one row, and then the spacer forming the next row. The wiring material 142 may be disposed to pass through the other side 142 of the member 217b. That is, the centers of the spacer member 217b constituting one row and the spacer member 217b constituting the next row are positioned so as to be offset from each other, so that the position of the wiring member 142 can be precisely controlled. However, the present invention is not limited thereto, and various structures, shapes, etc. may be applied as the spacer member 217b.

As described above, in the present embodiment, the wiring member 142 may have a wire shape having a small width (for example, a width of 250 um to 500 um). As in this embodiment, the wiring member 142 is wrapped around the winding roll 212. When loosening so as to pass through the one end portion 212b, the force applied to the wiring material 142 when the wiring material 142 is released can be minimized. Thereby, the yield strength of the portion of the wiring member 142 wound around the winding roll 211 and the portion of the wiring member 142 that is unwound from the winding roll 211 and provided as the flux unit 220 may have the same or similar values. have. For example, a portion of the wiring member 142 wound on the winding roll 211 has a yield strength of 67 mpa to 93 mpa and is unwound from the winding roll 211 and provided to the flux portion 220, etc. The yield strength of may be 67 mpa to 102 mpa (for example, 67 mpa to 93 mpa). Alternatively, compared to the yield strength of the portion of the wiring member 142 wound around the winding roll 211 in this embodiment, the yield strength of the portion of the wiring member 142 provided to the flux unit 220 by unwinding from the winding roll 211 is It may have a difference within 10% (ie, 100% to 110% strength). When the wiring material 142 having such a yield strength is attached to the solar cell 150, the yield strength of the wiring material 142 after being attached to the solar cell 150 is 110 mpa or less (for example, 67 mpa to 110 mpa). I can. Accordingly, the stress applied by the wiring member 142 to the solar cell 150 can be minimized, thereby improving structural stability and reliability of the solar cell panel 100. In addition, it is possible to improve mass production by preventing the wiring member 142 from being deformed or broken.

For reference, the yield strength of the wiring member 142 may be measured by various devices, for example, it may be measured by a universal testing machine. However, since the specific value of the yield strength of the wiring member 142 may vary depending on the material and width of the wiring member 142, the present invention is not limited to the above-described values.

On the other hand, unlike this embodiment, when the wiring member 142 is unwound in a direction substantially parallel to the direction in which the winding roll 211 is wound (that is, a direction not passing through one end portion 212b of the winding roll 211), winding The wiring member 142 receives force by the weight of the roll 211. Then, the yield strength of the wiring member 142 may be changed or deformed in the process of unwinding the wiring member 142, or may be broken in severe cases. For example, there is a large difference in yield strength between the portion of the wiring member 142 wound around the winding roll 211 and the portion of the wiring member 142 that is unwound from the winding roll 211 and provided to the flux unit 220 (for example, Difference in excess of 10%). Accordingly, since the yield strength of the wiring member 142 attached to the solar cell 150 is 120 mpa or more, the wiring member 142 applies stress to the solar cell 150 and thus the solar cell 150 may be easily damaged by an external shock or the like.

Referring back to FIG. 6, a plurality of wiring members 142 unwound and aligned from the winding roll 211 pass through the flux unit 220. In the flux unit 220, the flux is applied to the outer surface of the wiring member 142. In this case, the flux may be applied to the outer surface of the wiring material 142 by various methods such as an immersion process, a spray process, and a coating process.

The flux applied to the wiring material 142 passing through the flux unit 220 is hardened while passing through the drying unit 230 to form a flux layer positioned while surrounding the outer circumferential surface of the wiring material 142. The drying unit 230 may have various structures capable of drying the flux. For example, the dryer may dry the flux by wind, heat, or the like. The present invention is not limited to the structure or method of the drying unit 230.

For simplicity and clarity, specific structures of the flux unit 220 and the drying unit 230 are not shown, and various structures may be applied. The flux unit 220 and the drying unit 230 may be located together in one body. However, the present invention is not limited thereto, and the arrangement of the flux unit 220 and the drying unit 230 may be variously modified.

The wiring material 142 passing through the drying unit 230 is fixed to the jig 243 in the wiring material fixing unit 240.

A jig 243 including first and second fixing portions 241 and 242 for fixing the plurality of wiring members 142 at one side and the other side of the wiring member 142 is positioned in the wiring member fixing unit 240. At this time, the plurality of wiring members 142 is a jig 243 having a length suitable for connecting between two adjacent solar cells 150 or to a solar cell 150 and a bus ribbon (reference numeral 145 in FIG. 1, hereinafter the same). It is cut by the cutting part 244 to be fixed to.

In this embodiment, the jig 243 is formed in a direction crossing the extension direction of the plurality of wiring members 142 at one side of the plurality of wiring members 142, and the first fixing portion 241 fixing the plurality of wiring members 142 And, a second fixing portion 242 formed at the other side of the plurality of wiring members 142 in a direction crossing the extension direction of the plurality of wiring members 142 to fix the plurality of wiring members 142. As an example, the first fixing portion 241 and the second fixing portion 242 may have a straight shape and may be elongated. In the jig 243 to which the plurality of wiring members 142 are connected, the first fixing portion 241 and the second fixing portion 242 are spaced apart at regular intervals to be maintained in a state in which the plurality of wiring members 142 are pulled. Since the plurality of wiring members 142 are composed of wires having a small width, if the first fixing portion 241 and the second fixing portion 242 are held in a state of pulling the plurality of wiring members 142, a plurality of wiring members ( 142) is plastically deformed and remains in a state where it no longer deforms. As described above, in this embodiment, the jig 243 is provided with first and second fixing portions 241 and 242 for fixing both sides of the plurality of wiring members 142, respectively, so that a plurality of wiring members 142 are uniform by a simple structure. It has a structure that can be maintained to have yield strength. However, the present invention is not limited thereto, and the structure of the jig 243 may be variously modified.

As an example, the first fixed portion 241 located on one side of the jig 243 (for example, the entrance side) is movable in at least three axes (x-axis, y-axis, z-axis of the drawing) intersecting each other at right angles , The second fixing part 242 located on the other side of the jig fixing part (eg, the exit side) is movable in at least three axes (x-axis, y-axis, and z-axis of the drawing) intersecting each other at right angles. The first and second fixing portions 241 and 242 may be moved to a desired position by various known structures or methods. In addition, the cutting part 244 may be positioned earlier than the first fixing part 241 on one side (for example, an inlet side) of the jig 243.

The cutting part 244 may have various structures and methods that allow the plurality of wiring members 142 to be freely moved, fixed to a predetermined position, or cut at that position. The structure of the cutting part 244 will be described in more detail with reference to FIG. 11.

FIG. 11 is a diagram showing the operation of the cutting portion 244 included in the wiring member attachment apparatus 200 shown in FIG. 6.

Referring to FIG. 11, in this embodiment, the cut portion 244 includes a first portion 2441 and a second portion 2442, and the second portion 2442 is a wiring material relatively to the first portion 2441. It may be moved in a left-right direction perpendicular to the process direction of 142 (for example, in the y-axis direction in the drawing). The first portion 2441 includes a plurality of first grooves (or first recesses) R1 through which the plurality of wiring members 142 can respectively pass, and the second portion 2442 is a plurality of wiring members 142 A plurality of second grooves (or second recesses) R2 through which each can pass may be provided. In addition, both sides of the first groove R1 of the first portion 2441 may be formed of a flat surface 2442a that is not sharp so that the wiring member 142 can be fixed without damage. In addition, one side of the second groove R1 of the second portion 2442 is provided with a flat surface 2442a that is not sharp so that the wiring member 142 can be fixed without damage, and the wiring member 142 is cut on the other side. It may be provided with a cutting blade (2442b) formed to be sharp. The cutting blade 2442b may cut the wiring material 142 at a position protruding in the process direction rather than the plane of the second portion 2442. Accordingly, the wiring material 142 cut by the cutting portion 244 and fixed to the cutting portion 244 may be fixed in a state protruding from the surface of the second portion 2442 of the cutting portion 244.

As described above, since the second portion 2442 can be moved relative to the first portion 2441 in the left-right direction, the width of the portion where the first groove R1 and the second groove R2 overlap can be freely adjusted. Can be. As shown in FIG. 11A, if the width of the overlapping portion of the first groove R1 and the second groove R2 is larger than the width of the wiring member 142, the wiring member 142 can move freely. As shown in FIG. 11B, if the width of the overlapping portion of the first groove R1 and the second groove R2 is the same as the width of the wiring member 142, the wiring member 142 is the first portion 2441 ) And the second part 2442 may be fixed. And, as shown in (c) of FIG. 11, after the cutting blade 2442b has moved so as to cross the wiring member 142, the width of the overlapping portion of the first groove R1 and the second groove R2 When moving so that the width of the wiring member 142 is equal to the width of the wiring member 142, the wiring member 142 is cut by the cutting blade 2442b, and the remaining wiring member 142 remains fixed to the cut portion 244.

The structure and method of the cutting part 244 in the drawings and detailed description is exemplified that the plurality of wiring members 142 can be guided and fixed at a predetermined position while having a structure capable of performing cutting. However, the present invention is not limited thereto, and the cutting part 244 has various structures capable of cutting the wiring member 142 to have a predetermined length before or after the plurality of wiring members 142 are fixed to the jig 243, It can have a method, etc.

In addition, the first fixing portion 241 may have various structures and methods capable of fixing or moving the plurality of wiring members 142 at a predetermined position. For example, the first fixing part 241 may clamp the wiring member 142 so that the plurality of wiring members 142 are inserted and fixed.

For example, in this embodiment, the first fixing portion 241 includes a first portion 2411 and a second portion 2412, and the second portion 2412 is a wiring material relatively to the first portion 2411. It may be moved in a left-right direction perpendicular to the process direction of 142 (for example, in the y-axis direction in the drawing). The first portion 2411 is located on one side of the wiring member 142 corresponding to each wiring member 142, contacts one side of the wiring member 142, and faces the second portion 2412 along the length direction of the wiring member 142. It includes a first clamp part PA extending in the direction, and the second part 2412 is located on the other side of the wiring member 142 in correspondence with each wiring member 142 to contact the other side of the wiring member 142, and It includes a second clamp portion PB extending in a direction toward the first portion 2411 along the length direction of the 142. Accordingly, since the wiring member 142 is clamped in the longitudinal direction between the first clamp unit PA and the second clamp unit PB, it can be stably fixed.

In the drawing, as an example, the first portion 2411 is a first protruding portion P11 protruding downward from the other side of the wiring member 142 and a length of the first portion 2411 from the first protruding portion P11 A first fixing part P1 including a second part P12 protruding in the direction and extending to one side of the wiring member 142 and a third protruding part P13 protruding downward from the second part P12 It may include. In this case, the first clamp part PA may be positioned on the third protruding part P13. Similarly, the second portion 2412 includes a first protruding portion P21 protruding downward from one side of the wiring member 142 and a longitudinal direction of the second portion 2412 from the first protruding portion P21. A second fixing part P2 including a second part P22 protruding toward the other side of the wiring member 142 and a third protruding part P23 protruding downward from the second part P22. Can include. At this time, it is illustrated that the second clamp part PB is located on the third protruding part P23. With this structure, the wiring member 142 can be stably clamped.

In a state in which the wiring member 142 is positioned between the first clamp unit PA and the second clamp unit PB, the second part 2412 is connected to the first clamp part PA and the second part 2411. When the clamp part PB is moved so that the space between the clamp part PB becomes narrow and the first clamp part PA and the second clamp part PB are in close contact with both sides of the wiring material 142, the first clamp part PA and the second clamp part The wiring member 142 may be stably fixed between (PB). Conversely, the second part 2412 moves so that the distance between the first clamp part PA and the second clamp part PB with respect to the first part 2421 is moved away, so that the first clamp part PA and the second clamp part When the distance between the (PB) is greater than the width of the wiring member 142, the wiring member 142 may be stably separated or released from the first clamp unit PA and the second clamp unit PB.

Similarly, the second fixing portion 242 is a first portion having a first clamp portion PA and a first fixing portion P1 (ie, first to third protruding portions P11, P12, P13). A second portion 2422 having a second clamp portion PB and a second fixing portion P2 (first to third protruding portions P21, P22, and P23) 2421 and a second clamp portion PB may be included. For this, since the contents described in the first fixing part 241 may be applied as they are, detailed descriptions are omitted.

In the present embodiment, the first and second portions 2411 and 2412 and 2421 and 2422 having the clamp portions PA and PB are shown to be relatively moved to clamp the wiring member 142, but the present invention It is not limited. That is, various other structures can be applied to the structure of the clamp parts PA and PB, the structure of the first and second fixing parts P1 and P2, and the structure of the first and second fixing parts 241 and 242. have.

In addition, a fixing member 246 capable of fixing the wiring member 142 during cutting before the cutting portion 244 may be further included. For example, in the present embodiment, the fixing member 246 corresponds to each wiring member 142 one-to-one, and has a structure in which the wiring member 142 is pressed and fixed when the wiring member 142 is fixed without moving. A plurality of such fixing members 246 may be provided with a predetermined interval therebetween. Then, when the wiring member 142 is moved, fixed, cut, or fixed to the jig 243, the driving of the plurality of fixing members 246 is controlled to stably move or fix the wiring member 142. . In the drawing, it is illustrated that two fixing members 246 are provided to minimize the number and stably move or fix the wiring member 142. However, the present invention is not limited thereto, and various structures may be applied to the structure of the fixing member 246 and the number of fixing members 246 is not limited thereto.

In this way, the jig 243 to which the plurality of wiring members 142 are fixed (ie, the jig-wiring member assembly) moves to the attachment part 250. For example, the first and second fixing parts 241 and 242 may be driven in various directions (eg, x-axis direction, y-axis direction, z-axis direction) while maintaining a constant distance. Accordingly, the plurality of wiring members 142 are moved to the attachment part 250 in a fixed state fixed to the jig 243 so as not to be deformed undesirably.

Various known structures may be applied as a structure for moving the first and second fixing portions 241 and 242 to a desired position. In addition, various structures may be applied to a structure in which the first and second fixing portions 241 and 242 fix the wiring material 142.

Referring to FIG. 7, the attachment part 250 applies heat by the heat source 258 in a state in which the wiring member 142 and the solar cell 150 are pressed and fixed, thereby attaching the wiring member 142 to the solar cell 150. Attach to At this time, in this embodiment, after fixing the wiring member 142 and the solar cell 150, the jig 243 is separated from the wiring member 142, and the wiring member 142 and the solar cell ( 150) passes through the heat source 258.

In this embodiment, the jig 243 is removed while the wiring member 142 and the solar cell 150 are pressed together using exhaust absorption. That is, the wiring member 142 and the solar cell 150 are adsorbed and fixed without the jig 243 by exhaust air to pass through the heat source 258. Accordingly, the wiring member 142 and the solar cell 150 can be stably fixed by a simple method. And since the jig 243 can return to the wiring material fixing unit 240 again after simply passing the plurality of wiring members 142 to the attachment unit 250, the number of jigs 243 operating in the wiring material attachment device 200 is very little. By reducing the number of jigs 243 operating in this way, productivity can be greatly improved.

An exhaust device (or vacuum device) 259 for discharging gas for exhaust absorption may be provided. A pump, a compressor, or the like may be used as the exhaust device 259, and other devices having various structures, methods, and shapes may be used. For better understanding, the exhaust device 259 is conceptually illustrated at the lower right of the attachment part 250 of FIG. 7, but the exhaust device 259 is not located inside the attachment part 250 but is attached to the outside. It may be connected to the unit 250.

At this time, the worktable may be configured with a conveyor belt 252 so that exhaust absorption can be easily performed and the wiring member 142 and the solar cell 150 can be easily moved to the heat source unit 258. In this embodiment, a plurality of conveyor belts 252 may be provided to be spaced apart from each other. Accordingly, it is possible to exhaust air through the conveyor belt 252, so that the wiring member 142 and the solar cell 150 can be more easily compressed. In addition, the conveyor belt 252 has a narrow width and thus can be driven more easily.

Each conveyor belt 252 may further include an exhaust hole 252a. Accordingly, the exhaust device 259 is exhausted through the exhaust hole 252a, so that the solar cell 150 and the wiring member 142 can be effectively compressed. The exhaust device 259 may have a structure capable of discharging gas through the exhaust hole 252a.

For example, in each conveyor belt 252, one wiring member 142 is located at a portion adjacent to both edges, and a plurality of exhaust holes 252a are provided at a predetermined interval in the longitudinal direction of the conveyor belt 252 at the center portion. I can. Then, the wiring member 142 and the solar cell 150 can be effectively compressed by exhaust formed between the two adjacent conveyor belts 252 and exhaust formed by the exhaust holes 252a of each conveyor belt 252. Accordingly, the fixing stability of the wiring member 142 and the solar cell 150 can be improved.

At this time, one side of the conveyor belt 252 (conveyor belt 252) so that the positions of the wiring member 142 and the solar cell 150 are not displaced when fixing the wiring member 142 and the solar cell 150 using exhaust absorption. The third fixing part 254 may be located before the start part). The third fixing portion 254 maintains a fixed state to have a predetermined position with the conveyor belt 252.

The third fixing portion 254 may have various structures and methods capable of fixing or moving the plurality of wiring members 142 at a predetermined position. For example, in the present embodiment, the third fixed portion 254 includes a first portion 2451 and a second portion 2542, and the second portion 2542 is a wiring material relatively to the first portion 2451 It can be moved in a left-right direction perpendicular to the extension direction of 142 (for example, in the y-axis direction in the drawing).

The first part 2451 is formed in the length direction of the wiring member 142 and includes a first clamp part PA that is in close contact with and comes into contact with one side of the wiring member 142, and is formed in the length direction of the wiring member 142. It includes a second clamp portion PB to be in close contact with and in contact with the other side of the wiring member 142. In addition, the first portion 2451 is a first protruding portion P11 protruding upward from the other side of the wiring member 142, and protruding from the first protruding portion P11 in the longitudinal direction of the first portion 2451. A first fixing part P1 including a second part P12 extending to one side of the wiring member 142 and a third protruding part P13 protruding upward from the second part P12 may be included. have. In this case, the first clamp part PA may be positioned on the third protruding part P13. Similarly, the second portion 2542 is a first protruding portion P21 protruding upward from one side of the wiring member 142 and a longitudinal direction of the second portion 2542 from the first protruding portion P21 A second fixing portion P2 including a second portion P22 protruding toward and extending to the other side of the wiring member 142, and a third protruding portion P23 protruding upward from the second portion P22. Can include. At this time, it is illustrated that the second clamp part PB is located on the third protruding part P23. With this structure, the wiring member 142 can be stably clamped.

In this way, the first clamp part PA, the first fixing part P1, the second clamp part PB, and the second fixing part P2 are upwardly opposite to the first or second fixing parts 241 and 242. Since it protrudes, the wiring member 142 can be stably fixed without interference with the first fixing portion 241. As described above, except that the first clamp part PA, the first fixing part P1, the second clamp part PB, and the second fixing part P2 protrude upward rather than the lower part, 2 Since the fixing parts 241 and 242 are the same as the first clamping part PA, the first fixing part P1, the second clamping part PB, and the second fixing part P2, the contents are applied as they are. I can.

In the present embodiment, it is illustrated that the first and second portions 2541 and 2542 having the clamp portions PA and PB are relatively moved to clamp the wiring member 142, but the present invention is not limited thereto. That is, various other structures can be applied to the structure of the clamp parts PA and PB, the structure of the first and second fixing parts P1 and P2, and the structure of the first and second fixing parts 241 and 242. have.

In addition, a solar cell supply unit (reference numeral 251 in FIG. 13, the same hereinafter) for supplying the solar cell 150 may be provided on the conveyor belt 252. The solar cell supply unit 251 is not connected to the work table 252, the heat source unit 258, and the upper fixing member supply unit 2560 but is driven by an independent driving unit to provide the solar cell 150 to the work table 252. can do. Various known structures, methods, and the like may be applied to the solar cell supply unit 251.

In addition, an upper fixing member supply unit 2560 that provides an upper fixing member 256 fixing the wiring member 142 on the solar cell 150 may be positioned above the conveyor belt 252.

Referring to FIG. 8, the upper fixing member 256 supplied from the upper fixing member supplying part 2560 fixes the wiring member 142 on the solar cell 150 before being put into the heat source part 258. Then, the upper fixing member 256 passes through the heat source portion 258 together with the wiring member 142 in a state where the wiring member 142 is fixed on the solar cell 150. The solar cell 150 and the wiring member 142 are attached to each other while passing through the heat source portion 258. After passing through the heat source unit 258, the upper fixing member 256 may be separated from the solar cell 150 and the wiring member 142 and returned to the upper fixing member supply unit 2560. At this time, the upper fixing member supply unit 2560 is not connected to the work table 252, the heat source unit 258, etc., but is driven by an independent driving unit, so that the upper fixing member 256 is placed on the solar cell 150 and the wiring member 142. Can play a role in providing

As an example, the upper fixing member supply unit 2560 is located in a state extending from before the heat source unit 258 to after the heat source unit 258 so that the solar cell 150 and the wiring material 142 are located before the heat source unit 258. The upper fixing member 258 is easily supplied on the top and the upper fixing member 258 that has passed through the heat source portion 258 can be easily collected after the heat source portion 258. However, the present invention is not limited thereto.

And the upper fixing member supply unit (2560) is provided with a plurality of upper fixing member (256), even while one upper fixing member (256) passes through the heat source (258), the other upper fixing member (256) after that The located solar cell 150 and the wiring material 142 may be fixed. Accordingly, a process of attaching the plurality of solar cells 150 may be continuously performed.

In this embodiment, the upper fixing member 256 includes a plurality of fixing parts 2564 fixed to the frame parts 2562 and 2566 and a plurality of wiring members 142 fixed to the frame parts 2552 and 2566. I can. The upper fixing member 256 will be described in detail with reference to FIG. 12.

FIG. 12 is a perspective view illustrating a state in which the solar cell 150 and the wiring member 142 positioned above the solar cell 150 are fixed using the upper fixing member 256 included in the wiring member attachment apparatus 200 shown in FIG. 7.

7 and 12, the frame portions 2562 and 2566 may have various shapes in which a plurality of fixing portions 2564 can be fixed. As an example, the frame portions 2562 and 2566 are configured to respectively connect a plurality of first portions 2562 disposed in a direction crossing the extension direction of the wiring member 152 and both sides of the plurality of first portions 2562. A second portion 2566 may be included. Accordingly, while simplifying the structure, the plurality of fixing parts 2564 may be stably fixed.

The fixing part 2564 may be located in the first part 2562 corresponding to the part where the wiring member 142 is located. Further, each of the plurality of first portions 2562 may be positioned so that one wiring member 142 may be fixed by a plurality of fixing portions 2564.

The fixing part 2564 may have various structures capable of pressing and fixing the wiring member 142. More specifically, the fixing part 2564 may be formed of an elastic member. As an example, the fixing part 2564 may have a portion that is bent obliquely. Then, when the wiring member 142 is positioned under the bent portion of the fixing portion 2564, the wiring member 142 may be pressed and pressed by elasticity applied to the bent portion of the fixing portion 2564. However, the present invention is not limited thereto, and various modifications may be made to the structure and method of the upper fixing member 256.

In addition, the heat source unit 258 provides heat to the solar cell 150 at the top or bottom of the conveyor belt 252. The coating layer 142b of the wiring member 142 is melted and soldered by the heat provided by the heat source portion 258, so that the wiring member 14 is transferred to the electrodes 42, 44 of the solar cell 150 (in particular, the pad portion 424). ) Can be attached. In the present embodiment, the heat source unit 258 directly applies heat, thereby reducing the time of the attachment process and improving the attachment characteristics. As an example, the heat source unit 258 may be an infrared lamp. However, the present invention is not limited thereto, and various structures and methods capable of providing heat may be applied to the heat source unit 258.

13 is a block diagram schematically showing an apparatus 200 for attaching a wiring member according to an embodiment of the present invention.

Referring to FIG. 13 along with FIGS. 6 to 8, the wiring material 142 provided from the wiring material supply unit 210 is provided to the wiring material fixing unit 240 after passing through the flux unit 220 and the drying unit 230. In the wiring member fixing part 240, only the wiring member 142 is fixed to the jig 243 separately from the solar cell 150 to form a wiring member-jig assembly.

The wiring member-jig assembly thus formed is provided on the work table 252. In addition, the solar cell 150 is provided from the solar cell supply unit 251 to the work table 252. At this time, the solar cell 150 and the wiring material 142 positioned below it are fixed on the worktable 252 by adsorption, and the solar cell 150 and the wiring material 142 positioned above it are It is fixed by the upper fixing member 256. In this way, when the solar cell 150 and the wiring member 142 are fixed by the work table 252 or the upper fixing member 256, the jig 243 fixing the wiring member 142 is separated from the wiring member 142 and It is returned to the government 240. In this way, the worktable 252 serves to transfer the wiring member 142 and the solar cell 150, and fixes the solar cell 150 arranged in a predetermined position and the wiring member 142 located below the wiring member 142 in that state. Plays a role.

Then, the solar cell 150, the wiring member 142, and the upper fixing member 256 together pass through the heat source portion 258, and the solar cell 150 and the wiring member 142 are attached to form a solar cell string, and the heat source The upper fixing member 256 passing through the portion 258 is separated from the solar cell 150 and the wiring member 142 and conveyed to the upper fixing member supply unit 2560.

The operation of the wiring material attachment apparatus 200 and a method of attaching the wiring material according to the present embodiment will be described in more detail with reference to FIGS. 6 to 12 and FIGS. 14A to 14G.

14A to 14G are views for explaining the operation of the attachment part 250 of the wiring material attachment apparatus 200 shown in FIG. 7.

A plurality of wiring portions 142 (more specifically, the first wiring portions 1420a) arranged in a state spaced apart on the same plane by the wiring material supply portion 210 are transferred to the flux portion 220 and the drying portion 230. Is provided. Accordingly, a flux layer is formed on the outer surface of the first wiring member 1420a, so that the adhesion property of the first wiring member 1421 can be improved. For reference, in the present description, for the sake of distinction, for the first time, the wiring member 142 positioned and attached only under the first solar cell 151 is referred to as the first wiring member 1421, and the first solar cell 151 and the second solar cell ( The wiring member 142 connecting the 152 is referred to as a second wiring member 1422. However, the terms of the first wiring member 1421 and the second wiring member 142 are used only to distinguish each other, and the present invention is not limited thereto.

The first wiring member 1421 fixed to the cutting portion 244 and the fixing member 246 is positioned at a more protruding position than the flat surface of the second portion 2442 of the cutting portion 244. In this state, the second fixed portion 242 moves in the reverse direction of the process direction (negative x-axis direction in the drawing) and moves to the portion where the first wiring member 1421 protruding from the cut portion 244 is located. At this time, the first fixing part 241 moves to the upper or lower part, etc., so that the second fixing part 242 is located at a position that does not interfere with reaching the first wiring member 1421 protruding from the cutting part 244. . In addition, the second portion 2422 of the second fixing portion 242 moves in the left-right direction (y-axis direction) and adjusts the distance between the third groove R3 and the fourth groove R4, thereby the cutting portion 244 The plurality of first wiring members 1421 fixed to the second fixed portion 242 are fixed to the second fixed portion 242.

Subsequently, the fixing member 246 is moved to a position where the first wiring member 1421 is not fixed, and the cut portion 244 is in a released state in which the first wiring member 1421 is not fixed as shown in FIG. 11A. As a result, the first wiring member 1421 is not fixed to the cut portion 244 and is in a state in which it can move freely.

Subsequently, the second fixing portion 242 moves in the process direction (the positive x-axis direction in the drawing) by the desired length of the first wiring member 1421, and the first fixing portion 241 can fix the wiring member 142. Move to the position where there is, and fix one side of the wiring member 142 at a portion adjacent to the cut portion 244. Further, the fixing member 246 also fixes the position of the wiring member 142 by pressing the first wiring member 1421.

In this state, the cutting portion 244 operates as shown in FIG. 11C to cut the plurality of first wiring members 1421 together. Accordingly, a plurality of first wiring members 1421 cut to a desired length are fixed to the jig 243 together to form a first jig-wiring member assembly. At this time, the plurality of first wiring members 1421 fixed between the first fixing portion 241 and the second fixing portion 242 are plastically deformed by receiving a force that is tensioned in the longitudinal direction, and then plastically deformed and then maintained at a certain distance. Between the first fixing portion 241 and the second fixing portion 242 is no longer deformed and maintains the state. Accordingly, the plurality of first wiring members 1421 fixed to the jig 243 are maintained in a state that is no longer deformed even if the jig 243 is moved.

Subsequently, as shown in FIGS. 14A and 14B, the jig 243 to which the plurality of first wiring members 1421 are fixed is placed on the work table, and the plurality of first wiring members 1421 and the first solar cell 151 are Fix it.

More specifically, first, as shown in FIG. 14A, a jig 243 (ie, a first wiring member-jig assembly) to which the wiring member 142 is fixed is positioned on the conveyor belt 252 that is a worktable. In this state, the third fixing part 254 positioned on one side of the conveyor belt 252 is fixed to the first fixing part 241 between the first fixing part 241 and the second fixing part 242. It is fastened to the first wiring member 1421 to hold and fix the wiring member 1421, and the first fixing portion 241 is released from the first wiring member 1421. At this time, the length of the first wiring member 1421 is slightly longer than that of one first solar cell 151 and smaller than the lengths of the first solar cell 151 and the second solar cell 152, so that the bus ribbon (refer to FIG. 1 ). It may have a first length sufficient to be connected to reference numeral 145). In this way, when the third fixing portion 254 fixes one side of the plurality of first wiring members 1421, the plurality of first wiring members 1421 maintain a constant positional relationship with the work table at one side of the work table, and the third fixed part is located. Since it is fixed to (254), it can be stably fixed to the worktable.

Then, as shown in FIG. 14B, the first solar cell 151 is exhausted using the exhaust device 259 in a state in which the first solar cell 151 is placed on the conveyor belt 252 and the plurality of wiring members 1421. Then, the first solar cell 151 is compressed and fixed on the plurality of first wiring members 1421. At this time, the first portion 241 is a position that does not prevent the first solar cell 151 from being adsorbed onto the work table 252 on the first wiring member 1421 (for example, the upper position of the first solar cell 151 ). ) As described above, since the length of the first wiring member 1421 has a first length longer than that of the first solar cell 151, the second part 242 is a first solar cell ( Since it is located spaced apart from the 151 by a predetermined distance, even if it is fastened to the first wiring member 1421, the first solar cell 151 is not prevented from being adsorbed and fixed to the work table 252.

Subsequently, as shown in FIG. 14C, the second fixing portion 242 is released to separate the jig 243 from the plurality of first wiring members 1421. At this time, by releasing the third fixing portion 254 together, the plurality of first wiring members 1421 and the first solar cells 151 fixed to each other are in a state in which they can be moved by the movement of the conveyor belt 252. Even if the third fixing portion 254 and the second fixing portion 242 are released, the conveyor belt 252, the wiring member 142, and the first solar cell 151 are stably fixed by exhaust absorption. Accordingly, the jig 243 is completely separated and released from the wiring member 142, and the jig 243 returns to the wiring member fixing part 240.

Subsequently, as shown in FIG. 14D, the first solar cell 151 and the wiring member 142 attached to the lower surface thereof are moved in the process direction by the conveyor belt 252.

Subsequently, as shown in FIGS. 14E and 14F, another wiring member 142 (that is, a plurality of second wiring members 1422) is positioned on the first solar cell 151, and the first solar cell 151 The plurality of second wiring members 1422 are fixed thereon, and the second solar cell 152 is fixed on another part of the plurality of second wiring members 1422.

That is, as shown in FIG. 14E, a jig 243 in which a plurality of second wiring members 1422 are fixed so as to pass from the third fixing portion 254 to the first solar cell 151 located on the conveyor belt 252 (That is, the second wiring member-jig assembly) is placed. The second wiring member-jig assembly may be formed by the same method as the method of forming the first wiring member-jig assembly in the wiring member fixing part 240. However, the length of the second wiring member 1422 is longer than the first and second solar cells 151 and 152 so that two solar cells (that is, the first and second solar cells 151 and 152) can be connected. It can have 2 lengths.

In this state, the third fixing portion 254 located on one side of the conveyor belt 252 grabs and fixes the second wiring member 1422 fixed to the first fixing portion 241 of the jig 243. 1422), and the first fixing portion 241 is released from the second wiring member 1422.

And, as shown in FIG. 14F, when the second solar cell 152 is placed on another part of the second wiring member 1422 positioned on the conveyor belt 252, the plurality of second wiring members 1422 are formed by exhaust absorption. It is fixed to the solar cell 152. In addition, the upper fixing member 256 is positioned on the second wiring member 1422 positioned on the first solar cell 151, and as shown in FIG. 12, the plurality of fixing portions 254 are provided with a plurality of second wiring members ( 1422) to fix.

Subsequently, as shown in FIG. 14G, the second fixing portion 242 is released to separate the jig 243 from the plurality of second wiring members 1422. At this time, by releasing the third fixing portion 254 together, the plurality of second wiring members 1422 and the second solar cells 152 fixed to each other are in a state in which they can be moved by the movement of the conveyor belt 252. Even if the third fixing part 254 and the second fixing part 242 are loosened, the conveyor belt 252, the wiring member 142, and the first and second solar cells 151 and 152 are stably fixed by exhaust absorption. Has been. Accordingly, the jig 243 is completely separated and released from the wiring member 142, and the jig 243 returns to the wiring member fixing part 240.

As described above, when the solar cell 150 passes through the heat source 258 in a state in which the wiring member 142 is both attached to the upper and lower surfaces of the solar cell 150, the flux and the coating layer 142b of the wiring member 142 are melted. It is attached to the first or second electrodes 42 and 44 of the solar cell 150. More specifically, a first solar cell in which a plurality of first wiring members 1421 are located on one surface of the first solar cell 151 and a plurality of second wiring members 1422 are located on the other surface of the first solar cell 151 A plurality of first wiring members 1421 and a plurality of second wiring members 1422 can be attached to both surfaces of the first solar cell 151 by applying heat to 151.

In addition, a part of another plurality of wiring members 142 is positioned on a part of the second solar cell 152 and another solar cell (for example, a third solar cell) is disposed on another part of another plurality of wiring members 142. The plurality of wiring members 142 may be attached to the second solar cell 152 by positioning and applying heat to the second solar cell 152 in which the plurality of wiring members 142 are located on both sides. By repeating this operation, a solar cell string constituting one row may be formed. In the last solar cell 150 constituting the solar cell string, a plurality of wiring members 142 having a first length are placed on the last solar cell 150 and are fixed with an upper fixing member 256 to generate heat. By applying, a plurality of wiring members 142 can be attached.

According to the present embodiment, since the jig 243 is separated from the plurality of wiring members 142 before passing through the heat source unit 258, the number of operating jigs 243 can be minimized. Accordingly, the structure of the wiring material attachment device 200 can be simplified and productivity can be improved. At this time, if the plurality of wiring members 142 and the solar cell 150 are fixed by exhaust absorption, it is possible to stably fix the plurality of wiring members 142 and the solar cell 150 without damaging them. In addition, since the plurality of wiring members 142 cut by the cutting part 244 are fixed and attached to the solar cell 150, the structure and manufacturing process can be simplified. In addition, it is possible to automate the attachment of the plurality of wiring members 142 by passing the heat source 258 through the conveyor belt 252 while the plurality of wiring members 142 are positioned on both sides of the solar cell 150. . Accordingly, the wiring member 142 including the coating layer 142b for soldering including the rounded portion may be attached to the solar cell 150 by an automated system.

In the drawings and the above description, only configurations essential to the wiring material attachment apparatus 200 according to the present embodiment have been shown and described for a brief and clear description. The cutting part 244, the fixing member 246, the first fixing part 241, the second fixing part 242, the third fixing part 243, the upper fixing member 256, etc. drive them or change their position. A drive member (eg, a motor) and a portion connected thereto (eg, an arm, a link, etc.) may be provided to be changed. And it may further include a controller for operating the driving member wirelessly or wired. Thereby, the wiring material attachment device 200 can be operated as desired. Various methods or structures known as the above-described driving member, connected part, and controller may be applied.

An apparatus for attaching a wiring member for a solar panel and a method for attaching a wiring member for a solar panel including the same according to another exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. Since the above description may be applied to the same or extremely similar portions as the above description, detailed description will be omitted and only different portions will be described in detail. In addition, a combination of the above-described embodiments or modified examples thereof and the following embodiments or modified examples thereof also falls within the scope of the present invention.

15 is an exploded perspective view showing a part of a wiring material supply part of an apparatus for attaching a wiring material of a solar panel according to another embodiment of the present invention. For clarity and simplicity, in FIG. 15, a portion corresponding to FIG. 9 is shown, but the alignment member 217 is omitted.

Referring to FIG. 15, in this embodiment, the unwinding control member 213 is fixed to the external fixing portion 215d and extends above the one end portion 211b that passes when the wiring member 142 is unwound from the winding roll 211. It may include a stopper member 2134 placed on one end portion 211b. The stopper member 2134 may be in a state in which the external fixing portion 215d is fixed, but not fixed on the one end portion 211b. The stopper member 2134 serves to prevent the wiring member 142 from being entangled when the wiring member 142 is unwound while guiding the direction in which the wiring member 142 is unwound. That is, if the wiring member 142 stops for a while without loosening at the portion where the stopper member 2134 is located, and then the force that advances the wiring member 142 in the process direction continues to act, the stopper member 2134 and one end portion 211b Through the passage, the wiring member 142 is released.

A plurality of stopper members 2134 are positioned at a predetermined interval in the circumferential direction of the external fixing portion 215d to effectively prevent entanglement of the wiring member 142. However, the present invention is not limited thereto, and one stopper member 2134 may be provided.

The stopper member 2134 may be composed of a resin as a main component (a component containing the most) or a material having very little elasticity so as not to damage the wiring member 142. Accordingly, while minimizing damage to the wiring member 142, the wiring member 142 may pass through the one end portion 211a and the stopper member 2134 when necessary. Since the external fixing part 215d may contain metal as a main component to stably protect the winding roll 212, the external fixing part 215d and the stopper member 2134 may be made of different materials. Accordingly, the stopper member 2134 may be manufactured separately from the external fixing part 215d and fixed to the external fixing part 215d. For example, the stopper member 2134 may be fixed to the stopper member 2134 by an adhesive member 2134a (for example, an adhesive tape) extending from the stopper member 2134 to the external fixing portion 215d. . If the stopper member 2134 is fixed to the external fixing portion 215d with the adhesive member 2134a, the stopper member 2134 can be fixed in a simple manner.

In addition, the unwind control member 213 may further include a guide member 2132 spaced apart from the winding roll 212 by a predetermined distance. For the guide member 2132, since the description of FIG. 9 may be applied as it is, a detailed description will be omitted.

16 is an exploded perspective view showing a part of a wiring material supply part of an apparatus for attaching a wiring material of a solar panel according to another embodiment of the present invention. For clarity and simplicity, in FIG. 16, a portion corresponding to FIG. 9 is shown, but the alignment member 217 is omitted.

Referring to FIG. 16, in the present embodiment, the release control member 213 includes a guide member 2132c having a wiring part through hole WH2 (hereinafter, a first guide member 2132c for distinction), and through one side. A separate guide member 2136 having a path 2136a through which the wiring member 142 passes (hereinafter, a second guide member 2136 for distinction) may be included.

The first guide member 2132 is spaced apart from the take-up roll 212 and has a structure including a wiring material through hole WH2. For example, in the present embodiment, the first guide member 2132 is illustrated that a part of a metal bar or a metal wire is bent to form a wiring material through hole WH2 through which the wiring material 142 passes. However, the present invention is not limited thereto, and the first guide member 2132 may have other shapes, structures, and the like.

The second guide member 2136 has a circular planar shape and may include a path portion 2136b in which a path 2136a formed in a groove shape on a side surface is formed, and a support portion 2136c supporting the path portion 2136b. have.

The path part 2136b may have a shape in which an area gradually decreases while facing the inside. For example, the path part 2136b has a shape in which the area gradually decreases from one outer surface toward the inside, and then gradually increases as it goes toward the other outer surface, and near the center of the path part 2136b. The smallest area may be located. For example, the path part 2136b may have a biconical shape. A portion having the smallest area near the center of the path portion 2136b becomes the path 2136a where the wiring member 142 is located. Such a path part 2136b is rotatably installed so that when the wiring member 142 moves, the wiring member 142 rotates in one direction by the moving force, so that the wiring member 142 moving along the path 2136a is separated. It is possible to prevent the path portion 2136b from damaging the wiring member 142 even a little. However, the present invention is not limited thereto, and it is possible that the path part 2136b does not rotate.

The support portion 2136c may serve to support the path portion 2136b and fix it to the guide fixing portion 215f. In this case, the support part 2136c may be formed of an elastic member (for example, a spring member) to elastically support the path part 2136b. Accordingly, it is possible to effectively prevent the wiring member 142 from deviating from the path 2136a or the path portion 2136b from damaging the wiring member 142. However, the present invention is not limited thereto, and the support 2136c may not have elasticity.

17 is a block diagram schematically showing a part of an apparatus for attaching a wiring member for a solar panel according to another embodiment of the present invention.

As shown in Fig. 17, in the present embodiment, the first and second fixing portions constituting the jig 243 in a state in which the wiring member fixing member 248 moves and fixes the wiring member 142 by a predetermined length in the process direction. The wiring member 142 is fixed from the upper side of the wiring member fixing member 142 to move to the attachment portion 250.

The wiring member fixing member 248 may have various structures and methods capable of fixing or moving the plurality of wiring members 142 at a predetermined position. For example, in the present embodiment, the wiring member fixing member 248 includes a first portion 2481 and a second portion 2482, and the second portion 2482 is a wiring member relatively to the first portion 2481 ( It may move in a left-right direction (for example, a y-axis direction in the drawing) perpendicular to the extension direction of 142). The first part 2481 may include a first clamp portion to be in close contact with and contact with one side of the wiring member 142, and a second clamp portion to be in close contact with and contact with the other side of the wiring member 142 of the wiring member 142. have. For this, the first and second clamp portions PA and PB of the first or second fixing portions 241 and 242 of the jig 243 or the first and second clamp portions PA of the third fixing portion 254 , PB) can be applied as it is, so a detailed description is omitted.

In addition, the wiring member fixing member 248 may be driven in various directions (for example, in the x-axis direction, y-axis direction, and z-axis direction in the drawing). In particular, the wiring member fixing member 248 can reciprocate in the process direction (the x-axis direction in the drawing).

In the present embodiment, while the wiring member fixing member 248 clamps and holds the wiring member 142, it moves in the process direction to fix one side of the wiring member 142 in a state spaced apart from the cut part 244 by a desired distance. At this time, the fixing member 246 presses the wiring member 142 to fix the position of the wiring member 142.

In this state, the first and second fixing portions 241 and 242 constituting the jig 243 approach the upper side of the wiring member 142. At this time, the first and second fixing portions 241 and 242 are spaced apart from each other by a predetermined length between the fixing member 246 (or the cutting portion 244) and the wiring member fixing member 248. The first and second fixing portions 241 and 242 move in a downward direction to clamp both ends of the wiring member 142 located between the fixing member 246 (or the cutting portion 244) and the wiring member fixing member 248 Fix by clamping each with (PA, PB). That is, the first fixing portion 241 is fixed to the wiring member 142 at a position adjacent to the fixing member 246 or the cutting portion 244 by clamping portions PA and PB, and the second fixing portion 242 is a wiring member At a position adjacent to the fixing member 248, the wiring member 142 is fixed by clamping portions PA and PB. In this state, when the wiring material 142 is cut using the cutting part 244 and the wiring material fixing member 248 places the wiring material 142, the wiring material 142 is fixed to the first and second fixing parts 241 and 242, respectively. To form a wiring material-jig assembly.

As described above, in the present embodiment, the wiring member fixing member 248 is further included together with the first and second fixing portions 241 and 242, so that the wiring member fixing member 248 is the first and second fixing portions 241 and 242. You can share this role. This makes it possible to simplify the structure or drive in the wiring material attachment device.

18 is a side view showing each winding roll of a wiring material supply unit of an apparatus for attaching a wiring material of a solar panel according to another embodiment of the present invention.

Referring to FIG. 18, the winding roll 211 is positioned one at each end of the body portion 211a where the wiring member 142 is located and the body portion 211a, so that the wiring member 142 is the body portion 211a. It may include an end portion (211b) to prevent separation to the outside of the. The end portion 211b may include a first end portion 2111 from which the wiring member 142 is released and a second end portion 2112 positioned opposite the first end portion 2111.

In this case, the first end portion 2111 from which the wiring member 142 is released may have a shape in which the side surface is rounded. That is, a side surface through which the wiring member 142 passes (that is, a surface in the circumferential direction of the first end portion 2111) may be formed as a convexly protruding curved surface formed to be round. Accordingly, when the wiring member 142 passes through the first end portion 2111, it is smoothly released along the rounded side of the first end portion 2111, thereby minimizing problems such as twisting of the wiring member 142 with each other. have.

For example, the first end portion 2111 may be covered by a cap portion 2110 made of a resin (for example, a silicone resin) or an elastic material such as rubber. Accordingly, it is possible to minimize the impact that may be applied to the wiring member 142 when the wiring member 142 is released. In the present embodiment, the cap portion 2110 is applied to illustrate that it can be easily applied to the existing winding roll 211, but the present invention is not limited thereto. Accordingly, it is possible that the end portion 211b of the winding roll 211 is formed to have a rounded side surface.

In the drawing, it is illustrated that the side surface of the second end portion 2112 opposite to the first end portion 2111 is formed perpendicular to the outer surface of the second end portion 2112 and the inner surface opposite to the body portion 211a. Accordingly, it is possible to easily implement the winding roll 211 according to the present embodiment by covering the cap portion 2110 on the first end portion 2111 in a general winding roll or by modifying only the structure of the first end portion 2111. have. However, the present invention is not limited thereto, and the second end portion 2112 may have the same shape as the first end portion 2111.

For other contents of the main body part 211a and the end part 211b of the take-up roll 211, the description of the previously described take-up roll 211 may be applied as it is, so a detailed description thereof will be omitted.

19 is a side view showing each winding roll of a wiring material supply unit of an apparatus for attaching a wiring material of a solar panel according to still another embodiment of the present invention.

Referring to FIG. 19, the winding roll 211 is positioned one at each end of the body portion 211a where the wiring member 142 is located and the body portion 211a, so that the wiring member 142 is the body portion 211a. It may include an end portion (211b) to prevent separation to the outside of the. The end portion 211b may include a first end portion 2111 from which the wiring member 142 is released and a second end portion 2112 positioned opposite the first end portion 2111.

In this case, inclined portions 2111a and 2111b each having a cone or truncated cone shape may be positioned at an end of the body portion 211a adjacent to the end portions 2111 and 2112. Accordingly, when viewed in cross section, the surfaces of the inclined portions 2111a and 2111b may be formed to be inclined with a surface in the circumferential direction of a portion other than the inclined portions 2111a and 2111b (for example, while having an obtuse angle D). . And the winding roll 211 may have a shape of a biconical type as a whole.

As described above, when the wiring member 142 wound around the inclined portions 2111a and 2111b by the inclined portions 2111a and 2111b is unwound, the unwinding angle does not change rapidly, thereby minimizing the change in the unwinding angle. Accordingly, the wiring member 142 is smoothly released along the inner surfaces of the inclined portions 2111a and 2111b even at the end of the body portion 211a, thereby minimizing problems such as twisting of the wiring members 142 with each other.

The drawings and the above description illustrate that the first and second end portions 2111 and 2112 have a cone or truncated cone shape and thus can be freely used in an actual process, but only the first end portion 2111 has a cone or truncated cone shape. The second end portion 2112 may have a different shape. For example, the second end portion 2112 has a circular disk-like shape as in other embodiments, so that the inner surface of the second end portion 2112 is orthogonal to the surface in the circumferential direction of the body portion 211a. It can also be located. Other variations are possible.

20 is a side view showing a wiring material supply part of the device for attaching a wiring material of a solar panel according to another embodiment of the present invention. In Fig. 20, the illustration of the alignment member 217 is omitted for clear and simple drawing.

Referring to FIG. 20, in the present embodiment, angles formed by the winding rolls 211 located in different rows with the bottom surface may be different from each other. For example, in the drawing, a first winding roll 2110a located in the first row located at the bottom, a second winding roll 2110b located in the second row located above the first row, and the second row At least two of the third winding rolls 2110c positioned in the third row positioned above and the bottom surface may have different angles and directions. In this embodiment, each of the first winding roll 2110a, the second winding roll 2110b, and the third winding roll 2110c has different angles and directions formed with the bottom surface. The drawing is shown in a side view, and a first winding roll (2110a), a second winding roll (2110b), and a third winding roll (2110c) are shown one by one, but each row has a first winding roll (2110a) and a second winding roll. A plurality of (2110b) or third winding rolls (2110c) may be positioned.

More specifically, in the first winding roll 2110a, the first end portion 2111 from which the wiring member 142 is unwound is positioned higher than the second end portion 2112 opposite to the first winding roll 2110a. The length direction may be disposed while having an acute angle A1 with the bottom surface. Then, the length direction of the first winding roll 2110a may be positioned to be inclined to have an obtuse angle with the process direction of the wiring member 142.

The length direction of the second winding roll 2110b may be positioned parallel to the bottom surface. The length direction of the second winding roll 2110b may be positioned parallel to the process direction of the wiring member 142.

In the third take-up roll 2110c, the length direction of the third take-up roll 2110c is the inclination angle A3 of the bottom surface and the acute angle so that the first end part 2111 is positioned lower than the second end part 2112 opposite thereto. ) Can be deployed. The length direction of the third winding roll 2110c may be positioned to be inclined to have an obtuse angle with the process direction of the wiring member 142.

Accordingly, when the winding rolls 211 are arranged in a plurality of rows, the wiring member 142 is unwound toward the traveling direction of the wiring member 142, thereby minimizing problems such as twisting of the wiring member 142 with each other. When the winding rolls 211 are arranged in a plurality of rows (especially, three or more rows), the winding rolls 211 are stably installed in consideration of the position in the vertical direction and the process direction of the wiring member 142 and the difference. Can supply.

In the drawings, the inclination directions of the first winding roll 2110a and the third winding roll 2110c are opposite to each other and the second winding roll 2110b is parallel to the bottom surface, but the present invention is not limited thereto. Accordingly, at least two of the first winding roll 2110a, the second winding roll 2110b, and the third winding roll 2110c have the same inclination direction, but it is also possible to have a difference in the angle. For example, when the first end portion 2111 is positioned higher than the second end portion 2112 in the first to third winding rolls 2110a, 2110b, 2110c, the second winding is more than the first winding roll 2110a. The inclination angle of the roll 2110b may be small, and the inclination angle of the third take-up roll 2110c may be smaller than that of the second take-up roll 2110b. Alternatively, when the first end portion 2111 is positioned lower than the second end portion 2112 in the first to third winding rolls 2110a, 2110b, 2110c, the second winding roll (rather than the first winding roll 2110a) ( The inclination angle of 2110b) may be large, and the inclination angle of the third take-up roll 2110c may be greater than that of the second take-up roll 2110b. Alternatively, some of the rows of the plurality of rows may have the same inclination direction and angle of the winding roll 211, and may differ in the inclination direction and angle from other rows. In addition, various modifications are possible. Features, structures, effects, etc. as described above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Accordingly, contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

100: solar panel
142: wiring material
150: solar cell
200: wiring material attachment device
210: wiring material supply unit
220: flux part
230: drying unit
240: wiring material fixing part
250: attachment

Claims (19)

Unwinding the wiring material wound on the winding roll and moving it in the process direction; And
Attaching the wiring material to the solar cell
Including,
In the moving step, the wiring member wound on the winding roll is wound in the circumferential direction of the winding roll, and the wiring member wound on the winding roll connects both ends of the winding roll positioned with a surface on which the wiring member is wound. It is unwound in the longitudinal direction of the winding roll,
The method of attaching a wiring material for a solar panel, wherein the yield strength of the wiring material attached to the solar cell is 110 mpa or less. The method of claim 1,
The winding roll includes a main body portion on which the wiring member is positioned, and an end portion that is positioned one at each end portion in a longitudinal direction of the main body portion to prevent the wiring member from being separated from the outside,
A method of attaching a wiring member for a solar panel in which the wiring member wound around the winding roll is unwound so as to pass through the end portion of the winding roll. The method of claim 1,
A method of attaching a wiring material for a solar panel, wherein the length direction of the winding roll is parallel to the bottom surface or inclined to have an acute angle with the bottom surface. The method of claim 1,
A method for attaching a wiring member of a solar panel, wherein the length direction of the winding roll is parallel to the process direction or inclined to have an obtuse angle with the process direction. The method of claim 1,
In the moving step, the wiring member is unwound so as to have an inclination angle parallel to the length direction of the winding roll or an acute angle with the length direction of the winding roll,
In the moving step, the winding roll is fixed without rotation. The method of claim 1,
A method of attaching a wiring material for a solar panel, wherein a difference in the yield strength of the wiring material wound on the winding roll and before being attached to the solar cell after being unwound from the winding roll is within 10%. The method of claim 1,
The width of the wiring material is 250um to 500um,
The yield strength of the wiring material wound on the winding roll is 67 mpa to 93 mpa,
A method of attaching a wiring material for a solar panel, wherein the wiring material has a yield strength of 67 mpa to 102 mpa before being attached to the solar cell after being unwound from the winding roll. A wiring material supply unit which unwinds the wiring material wound on the winding roll and moves it in the process direction; And
Attachment for attaching the wiring material to the solar cell
Including,
The wiring material supply unit,
A winding roll wound around the wiring member; And
Unwinding control member for unwinding the wiring member from the winding roll
Including,
The unwinding control member allows the wiring member to be unwound in the longitudinal direction of a winding roll connecting both ends of the winding roll positioned with a surface on which the wiring member is wound, and is attached to the solar cell by the attachment portion. An apparatus for attaching a wiring material for a solar panel, wherein the yield strength of the wiring material is 110 mpa or less. The method of claim 8,
The winding roll includes a main body portion on which the wiring member is positioned, and an end portion that is positioned one at each end portion in a longitudinal direction of the main body portion to prevent the wiring member from being separated from the outside,
The unwinding control member is a device for attaching a wiring member for a solar panel to unwind a wiring member wound around the winding roll while passing through the end portion of the winding roll. The method of claim 8,
The unwinding control member is fixed adjacent to the winding roll, has a wiring material passage hole through which the wiring material passes, and a rotating member rotating in a direction opposite to the direction in which the wiring material is wound. The method of claim 8, wherein the release control member comprises a rotation member,
The rotation member includes a rotatable rotation fixing portion, and an extension portion protruding from the rotation fixing portion toward the outside and having a wiring material passage hole,
The wiring material passing hole is a device for attaching a wiring material of a solar panel located outside an outer edge of the winding roll. The method of claim 8,
Further comprising an external fixing portion to surround at least a portion of the outside of the winding roll,
A device for attaching a wiring member for a solar panel including a stopper member extending from the external fixing portion and placed on an end portion of the winding roll. The method of claim 8,
The winding roll includes a main body portion to which the wiring member is wound, a first end portion from which the wiring member is unwound by being positioned on one side of the main body portion, and a first end portion located on the other side of the main body portion opposite to the first end portion Contains 2 end portions,
An apparatus for attaching a wiring material for a solar panel in which a side surface of the second end portion is formed to be rounded, or a side surface of the body portion adjacent to the second end portion is formed to be inclined to have an obtuse angle with the body portion. The method of claim 8,
An apparatus for attaching a wiring material of a solar panel including a guide member in which the unwind control member is spaced apart from the winding roll by a predetermined distance and has a wiring material passage hole through which the wiring material passes or a path through which the wiring material passes. The method of claim 8, wherein the release control member comprises a guide member,
The guide member is spaced apart from the winding roll by a predetermined distance and includes a first guide member having a wiring material passage hole through which the wiring member passes, and a second guide member having a path through which the wiring member passes. Wiring material attachment device. The method of claim 8,
The winding roll includes a plurality of winding rolls,
An apparatus for attaching a wiring member for a solar panel further comprising an alignment member for spaced apart the wiring members unwound from the plurality of winding rolls by the unwinding control member so as to have a predetermined interval on the same plane. The method of claim 16,
The alignment member includes a transfer roll that rotates while the wiring material unwound from the plurality of winding rolls is placed and is positioned on the same plane, and the wiring material that has passed the transfer roll passes to the side so that the wiring material is desired. A device for attaching a wiring member for a solar panel comprising a spacer member to be spaced apart at intervals. The method of claim 8,
A plurality of winding rolls are provided to constitute a plurality of rows,
An apparatus for attaching a wiring material of a solar panel having at least one of an angle and an inclination direction formed by the winding rolls positioned in at least two of the plurality of rows with respect to the bottom surface. The method of claim 8,
In the wiring material supply part, the winding roll is fixed without rotation.

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