KR20170075216A - Apparatus for attaching interconnector of solar cell panel - Google Patents

Abstract

A wiring member attaching apparatus for a solar cell panel according to an embodiment of the present invention includes a spray member having a core portion and a spray portion for spraying flux onto a wiring material including a solder layer formed on a surface of the core layer, A flux portion including a supply member for providing the supply member; And an attaching portion for attaching the wiring material to the solar cell by pressing the wiring material to the solar cell while applying heat to solder the solder layer. The supply member includes a recirculating member that collects and recirculates the flux sprayed from the spray member to the spray member.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for attaching a wiring material to a solar cell panel,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring material attaching apparatus for a solar cell panel, and more particularly, to a wiring material attaching apparatus for a solar cell panel having an improved structure.

With the recent depletion of existing energy sources such as oil and coal, interest in alternative energy to replace them is increasing. Among them, solar cells are attracting attention as a next-generation battery that converts 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 cell panel by a packaging process for protecting a plurality of solar cells. Solar panels require long-term reliability because they must be developed for a long time in various environments. At this time, conventionally, a plurality of solar cells are connected by a ribbon.

However, the apparatus and method for attaching such ribbons are complicated and productivity may be deteriorated. And a device and a method for attaching the ribbon when a wiring material of a different structure is used instead of the ribbon.

An object of the present invention is to provide an apparatus for attaching a wiring material to a solar cell panel that can improve productivity by attaching a wiring material to a solar cell by an automated system.

The present invention also provides a wiring material adhering apparatus for a solar cell panel which can reduce the process cost.

A wiring member attaching apparatus for a solar cell panel according to an embodiment of the present invention includes a spray member having a core portion and a spray portion for spraying flux onto a wiring material including a solder layer formed on a surface of the core layer, A flux portion including a supply member for providing the supply member; And an attaching portion for attaching the wiring material to the solar cell by pressing the wiring material to the solar cell while applying heat to solder the solder layer. The supply member includes a recirculating member that collects and recirculates the flux sprayed from the spray member to the spray member.

According to the wiring material adhering apparatus according to the present embodiment, the wiring material including the solder layer for soldering including the rounded portion can be attached to the solar cell by an automated system. And the recycle member can be provided so that the flux can be recycled and reused, thereby greatly reducing the manufacturing cost. Particularly, in a wiring material containing a rounded portion, a spray process can be used to uniformly form a flux layer. In this case, the amount of flux that is sprayed but does not form a flux layer is very large. The recycling member according to the present embodiment is applied to a wiring material attaching apparatus to which a spraying process is applied, so that the waste of flux that can occur in this case can be greatly reduced.

1 is a sectional view of a solar cell panel to which an apparatus for attaching a wiring material of a solar cell panel according to an embodiment of the present invention can be applied.
FIG. 2 is a perspective view showing a solar cell and wiring material of the solar cell panel shown in FIG. 1. FIG.
3 is a schematic view showing a part of an apparatus for attaching a wiring material to a solar cell panel according to an embodiment of the present invention.
4 is a schematic view showing another part of a wiring material attaching apparatus for a solar cell panel according to an embodiment of the present invention.
5 is a block diagram schematically showing an apparatus for attaching a wiring material to a solar cell panel according to an embodiment of the present invention.
6 is a perspective view schematically showing a state in which a solar cell and a wiring material disposed on the solar cell are fixed using an upper fixing member included in the wiring material attaching apparatus shown in FIG.
Fig. 7 is a configuration diagram showing a flux unit of the wiring material attaching apparatus of the solar cell panel shown in Fig. 3;
Fig. 8 is a configuration diagram showing the spray member of the flux portion shown in Fig. 7 and the wiring material in which the spraying process is performed.
FIG. 9 is a plan view showing various examples of the ejection portion which can be applied to the flux portion shown in FIG. 7. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it is needless to say that the present invention is not limited to these embodiments and can be modified into various forms.

In the drawings, the same reference numerals are used for the same or similar parts throughout the specification. In the drawings, the thickness, the width, and the like are enlarged or reduced in order to make the description more clear, and the thickness, width, etc. of the present invention are not limited to those shown in the drawings.

Wherever certain parts of the specification are referred to as "comprising ", the description does not exclude other parts and may include other parts, unless specifically stated otherwise. Also, when a portion of a layer, film, region, plate, or the like is referred to as being "on" another portion, it also includes the case where another portion is located in the middle as well as the other portion. When a portion of a layer, film, region, plate, or the like is referred to as being "directly on" another portion, it means that no other portion is located in the middle.

Hereinafter, a wiring material attaching apparatus for a solar cell panel according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view of a solar cell panel to which a wiring material attaching apparatus for a solar cell panel according to an embodiment of the present invention can be applied, and FIG. 2 is a perspective view illustrating a solar cell and a wiring material of the solar cell panel shown in FIG.

Referring to FIG. 1, a solar cell panel 100 according to the present embodiment includes a plurality of solar cells 150 and a wiring material 142 for electrically connecting a plurality of solar cells 150. The solar cell panel 100 includes a sealing member 130 that surrounds and seals a plurality of solar cells 150 and a wiring member 142 that connects the solar cells 150 and a front surface 130 that is positioned on the front surface of the solar cell 150 on the sealing member 130. [ A substrate 110 and a rear substrate 120 positioned on the back surface of the solar cell 150 on the sealing member 130. This will be explained in more detail.

In this embodiment, the solar cell 150 includes a semiconductor substrate, an emitter region formed on one side of the semiconductor substrate or on the semiconductor substrate, a rear electric field region formed on the other side, a first electrode connected to the emitter region, And a second electrode connected to the electric field region. In one example, the solar cell 150 may be a silicon semiconductor solar cell based on a single crystal or a semiconductor substrate comprising polycrystalline silicon. Thereby achieving high efficiency. However, the present invention is not limited thereto, and the solar cell 150 may have various structures.

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 has a width smaller than the width of the solar cell 150, and extends from above the first electrode of the first solar cell 151 of the neighboring two solar cells 150, And is electrically connected to the second electrode of the second electrode 152 by a long length. When three or more solar cells 150 are provided, the wiring material 142 is positioned on two adjacent solar cells as described above, and the solar cells 150 are electrically connected continuously.

In this embodiment, the wiring material 142 may be composed of a wire having a smaller width than that of a ribbon having a relatively wide width (for example, 1 mm to 2 mm) which is used in the past and a long continuous wire. The wiring member 142 includes a core layer 142a made of metal and a solder layer 142b coated on the surface of the core layer 142a to enable soldering with the electrode including the solder material . As an example, the width or diameter of the wiring member 142 may be 250 to 500 탆. The shape or the like of the wiring material 142 after soldering may vary and the thickness of the solder layer 142b may be thinner so that the width or diameter of the wiring material 142 may mean the width or diameter of the core layer 142a . At this time, the wire constituting the wiring material 142 may include rounded portions. That is, the wire constituting the wiring material 142 may have a round cross section, an elliptic cross section, or a round cross section or a round cross section.

6 to 33 wiring members 142 may be provided on one side of the solar cell 150. At this time, in order to further improve the output of the solar cell panel 100, the number of the wiring materials 142 may be 10 or more (for example, 12 to 13). However, the present invention is not limited thereto. At this time, the pitch of the wiring material 142 may be 4.75 mm to 26.13 mm. However, the numerical values and the like described above are merely examples, and the present invention is not limited thereto.

The sealing material 130 includes 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 . For example, an ethylene-vinyl acetate copolymer resin (EVA), a polyvinyl butyral, a silicon resin, an ester-based resin, an olefin-based resin, or the like may be used for the first sealant 131 and the second sealant 132. The front substrate 110 may be made of a light-transmitting insulating material capable of transmitting light, and the rear substrate 120 may be a sheet made of a light-transmitting material, a non-light-transmitting material, or a reflective material. For example, the front substrate 110 may be formed of a glass substrate or the like and the rear substrate 120 may have a TPT (Tedlar / PET / Tedlar) type or a base film (e.g., polyethylene terephthalate ) May include a polyvinylidene fluoride (PVDF) resin layer formed on at least one side of the substrate. However, the present invention is not limited thereto.

The use of a wire having a small width or a diameter as the wiring material 142 can reduce the material cost considerably and a sufficient number of the wiring materials 142 can be provided to minimize the moving distance of the carrier, 100 can be improved. Further, the rounded portion can induce reflection or diffuse reflection of the wiring material 142 to reuse the light.

In this embodiment, as described above, a plurality of wire-like wiring materials 142 having a small width or diameter and a circular cross-sectional shape should be attached to the solar cell 150 in a large number. Accordingly, it is required to provide a wiring material attaching device capable of attaching the wiring material 142 to the solar cell 150 so as to have a high adhesive force even if having a wire form, and to improve the productivity by attaching a large number of the wiring materials 142 together . A wiring material attaching device for a solar cell panel according to this embodiment in consideration thereof will now be described in detail with reference to Figs. 3 to 9. Fig.

3 is a schematic view showing a part of an apparatus for attaching a wiring material to a solar cell panel according to an embodiment of the present invention. 4 is a schematic view showing another part of a wiring material attaching apparatus for a solar cell panel according to an embodiment of the present invention. 5 is a block diagram schematically showing an apparatus for attaching a wiring material to a solar cell panel according to an embodiment of the present invention. And FIG. 6 is a perspective view schematically showing a state in which a solar cell and a wiring material disposed on the solar cell are fixed using an upper fixing member included in the wiring material attaching apparatus shown in FIG. The upper fixing member supply unit 2560 and the solar cell supply unit 251 are not shown in FIG. 4 for the sake of simplicity.

(Hereinafter, referred to as "wiring material adhering apparatus") 200 according to the present embodiment is configured by loosening a wiring material 142 wound around a wind-up roll 212, A flux portion 220 for applying a flux (224 in FIG. 7 and FIG. 8, hereinafter the same) to the provided wiring material 142, and a flux portion 224 for drying the flux 224 A wiring member withdrawing portion 240 for fixing the wiring member 142 to the jig 243 and an attaching portion 250 for attaching the wiring member 142 to the solar cell 150. [

The wiring material 142 provided from the wiring material supplying part 210 is provided to the wiring material drawing part 240 in a state where the flux layer is formed via the flux part 220 and the drying part 230. Only the wiring material 142 is fixed to the jig 243 in the wiring material withdrawing portion 240 and then the cut portion 244 cuts the wiring material 142. [ Thereby, the wiring material-jig combined body 243a, in which the wiring material 142 cut separately from the solar cell 150 is fixed to the jig 243, is formed.

The jig 243 includes a first fixing part 241 fixed to one side of the wiring material 142 and a second fixing part 242 fixed to the other side of the wiring material 142. [ The first and second fixing portions 241 and 242 may be provided with clamping portions PA and PB for moving the wiring members 142 so that the distance between the first and second fixing portions 241 and 242 changes. The structure, the method, and the like of the clamp portions PA and PB can be variously modified. The cut portion 244 may be formed of various structures or systems that can cut the wiring material 142 after the wiring material 142 is fixed to the jig 243.

A variety of members or devices for aligning or guiding the position of the wiring material 142 may be located in the path that moves to the wiring material supplying unit 210, the flux unit 220, the drying unit 230, and the wiring material withdrawing unit 240 . A guide member 214 for guiding the wiring member 142 to be positioned at a desired position, a pressing member 246 for pressing and fixing the wiring member 142 when the wiring member 142 does not move, and the like . In the drawing, for example, a groove 214a through which a wiring material 142 passes is illustrated as a guide member 214 to guide the wiring material 142. However, the present invention is not limited thereto. Therefore, the shapes, structures, and methods of the guide member 214, the pressing member 246, and the like can be variously modified.

The thus formed wiring-jig combination body 243a is conveyed to the conveyor belt 252 and provided. A conveying member (not shown) for conveying the jig 243 is conveyed to the wiring-jig combination body 243a by conveying the jig 243 from the wiring material withdrawing portion 240 to the conveyor belt 252 . Various structures, methods and the like known as the structure of the transfer member can be applied. And the conveyor belt 252 is provided with a solar cell 150 from the solar cell supply unit 251. [

At this time, the conveyor belt 252 is provided with an exhaust hole 252a. The exhaust gas is exhausted through the exhaust hole 252a to exhaust the solar cell 150 and a wiring material (not shown) disposed between the solar cell 150 and the lower portion thereof (that is, the solar cell 150 and the conveyor belt 252) 142 can effectively be squeezed. The exhaust device 259 may have a structure capable of exhausting the gas through the exhaust hole 252a. Thus, the solar cell 150 and the wiring material 142 located under the solar cell 150 are fixed on the conveyor belt 252 by suction.

At this time, when one side (the conveyor belt 252) of the conveyor belt 252 is moved so as to prevent the position of the wiring material 142 and the solar cell 150 from being shifted when the wiring material 142 and the solar cell 150 are fixed using the exhaust adsorption, The third fixing portion 254 may be located before the portion where the first fixing portion 254 starts. The third fixing portion 254 is kept fixed with the conveyor belt 252 at a predetermined position. The third fixing portion 254 may include clamp portions PA and PB capable of fixing the wiring members 142, respectively. The structure of the clamp portions PA and PB can be variously modified.

The solar cell 150 and the wiring material 142 located on the solar cell 150 are fixed by an upper fixing member (or a fixing member) 256 located thereon.

The upper fixing member 256 supplied from the upper fixing member supply part 2560 fixes the wiring material 142 on the upper part of the solar cell 150 before being injected into the heat source part 258. The upper fixing member 256 passes through the heat source unit 258 together with the wiring member 142 fixed on the upper part of the solar cell 150. The solar cell 150 and the wiring material 142 are attached to each other while 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 may be returned to the upper fixing member supply unit 2560 after passing through the heat source unit 258. [ The upper fixing member supply unit 2560 is not connected to the conveyor belt 252 and the heat source unit 258 and is driven by a unique driving unit so that the upper fixing member 256 is connected to the upper portion of the solar cell 150 and the wiring member 142 Can serve to provide

The upper fixing member supply part 2560 is extended from the previous heat source part 258 to a position after the heat source part 258 and is positioned in a state where the solar cell 150 and the wiring material 142 are positioned before the heat source part 258. [ The upper fixing member 258 can be easily supplied to the upper fixing member 258 and the upper fixing member 258 passed through the heat source 258 can be easily collected after the heat source 258. [ However, the present invention is not limited thereto.

The upper fixing member supply unit 2560 includes a plurality of upper fixing members 256 so that even when one upper fixing member 256 is passing through the heat source unit 258, The solar cell 150 and the wiring material 142 can be fixed. Thus, the process of attaching a plurality of solar cells 150 can be performed continuously.

The upper fixing member 256 includes frame portions 2562 and 2566 and a plurality of pressing pieces 2564 fixed to the frame portions 2562 and 2566 to press the plurality of wiring members 142 .

The frame portions 2562 and 2566 may have various shapes in which a plurality of the pressing pieces 2564 can be fixed. For example, the frame portions 2562 and 2566 may include a first portion 2562 including a portion disposed in a direction intersecting the extending direction of the wiring member 152, and a first portion 2562 connecting both sides of the first portion 2562 And a second portion 2566. Thus, the plurality of compression pieces 2564 can be stably fixed or supported while simplifying the structure. In the drawing, the second portions 2566 are formed in a straight line and are positioned one on each side, but the present invention is not limited thereto. The second portion 2566 may have a frame shape or an inner hollow square shape or the like. The first portion 2562 and the second portion 2566 may be integrally formed with each other or may be separately formed and fastened to each other by fastening members such as screws.

The first portion 2562 and the compression piece 2564 may be integrally formed or the compression piece 2564 may be fixed or coupled to the bottom surface of the first portion 2562. For example, the crimping piece 2564 may be releasably secured to the first portion 2562 to facilitate repair or replacement. Various structures known as structures in which the pressing piece 2564 is fixed or coupled to the bottom surface of the first portion 2562 can be used.

The first portion 2562 may be spaced apart at regular intervals so that the wiring material 142 can be stably pressed onto the solar cell 150. At this time, the first portion 2562 or the frame portions 2562 and 2566 may have a weight such that the pressing piece 2564 can compress the wiring member 142 to the solar cell 150. That is, the frame portions 2562 and 2566 can provide a pressing force to the wiring material 142 by its own weight. According to this, since it is not necessary to provide another device for applying a pressing force separately, the facility can be simplified.

The pressing piece 2564 can be positioned corresponding to the portion of the first portion 2562 where the wiring material 142 is located. The pressing pieces 2564 may be spaced apart from each other by a distance between the wiring members 142 fixed to the solar cell 150 and may be fixed to the first portions 2562 in a line by the same number as the number of the wiring members 142 have. As a result, a plurality of crimping pieces 2564 positioned in each of the plurality of first portions 2562 can press and fix one wiring material 142.

The compression piece 2564 can have various structures that can be fixed by pressing the wiring material 142. [ The pressing piece 2564 may have an inclined or rounded portion having an elastic force. For example, the compression piece 2564 may have an approximate C, U, or V shape.

When the solar cell 150 and the wiring material 142 are fixed by the conveyor belt 252 and / or the upper fixing member 256, the jig 243 and the third fixing portion 254 Is separated from the wiring material 142 and the jig 243 is transferred to the wiring material lead-out portion 240. [ The conveyor belt 252 serves to transfer the wiring material 142 and the solar cell 150 and also fixes the solar cell 150 arranged in a predetermined position and the wiring material 142 located under the solar cell 150 in this state .

The solar cell 150, the wiring material 142 and the upper fixing member 256 together pass through the heat source unit 258 to attach the solar cell 150 and the wiring material 142 to form a solar cell string, 258 are separated from the solar cell 150 and the wiring member 142 and are transported to the upper stationary member supply unit 2560. [

At this time, the attachment part 250 provides light by the heat source part 258 in a state in which the wiring material 142 and the solar cell 150 are pressed and fixed and applies heat (for example, radiant heat) 142 are attached to the solar cell 150.

More specifically, the heat source 258 provides heat by applying light to the solar cell 150 at the top or bottom of the conveyor belt 252. The solder layer 142b of the wiring material 142 is melted and soldered by the heat provided by the heat source unit 258 so that the wiring material 142 is attached to the electrodes 42 and 44 of the solar cell 150. [ In this embodiment, heat is applied to the heat source 258 by light, so that the time of the attaching process can be reduced and the attaching property can be improved. For example, the heat source unit 258 may be an infrared lamp. However, the present invention is not limited thereto, and the heat source unit 258 may be applied to various structures and systems capable of providing heat.

Hereinafter, the flux unit 220 and the drying unit 230 will be described in more detail with reference to FIG. 3 and FIGS. 7 to 9. FIG.

Fig. 7 is a configuration diagram showing the flux portion 220 of the wiring material attaching apparatus 200 of the solar cell panel shown in Fig. FIG. 8 is a view showing a spray member 220 of the flux unit 220 shown in FIG. 7 and a wiring material 142 in which a spraying process is performed. FIG. 9 is a plan view showing various examples of the jetting section 222a that can be applied to the flux section 220 shown in FIG. Only the jetting section 222a is shown in FIG. 9 for the sake of simplicity and clarity.

A plurality of wiring materials 142 arranged in a predetermined shape by being unwound from the wind-up roll 212 of the wiring material supplying unit 210 pass through the flux unit 220. In addition, as shown in FIG. In the flux portion 220, a flux 224 is applied to the outer surface of the wiring material 142 to form a flux layer 224a. The flux 224 prevents the metal material of the wiring material 142 or the electrodes 42 and 44 from being oxidized or the oxide film formed on the outer surface of the wiring material 142 is removed when the wiring material 142 is attached to the solar cell 150 Thereby improving the adhesion characteristics. Flux 224 may include a solvent and a resin, and may include, by way of example, an activator comprising a halogen element (fluorine, chlorine, bromine, iodine, etc.) (especially fluorine). The oxide film formed on the outer surface of the wiring member 142 can be easily removed by the activator containing the halogen element.

7, the flux unit 220 includes a spray member 222 for spraying a flux 224 onto a plurality of wiring members 142 arranged in parallel, a spray member 222 for spraying a flux 224 on the spray member 222, And a feed member 226 that provides a feeder 224. The supply member 226 includes a recirculation member 226a that collects the flux 224 ejected from the spray member 222 and provides it to the spray member 222 to recirculate the flux 224, And a raw material supply member 226b that provides a flux 224 that is not used in the fluid 226a.

Accordingly, in this embodiment, the flux 224 can be applied to the outer surface of the wiring material 142 by spraying or spraying. When the flux 224 is applied to the wiring material 142 by a spraying method, the flux 224 is applied to the wiring material 142 with a strong pressure so that the flux 224 can be applied to the entire wiring material 142 with a sufficient thickness. That is, the flux 224 can be uniformly applied to the wiring material 142 as a whole irrespective of the surface state of the wiring material 142. The flux 224 is forcibly blown by the spray member 222 with a strong pressure even if there is a portion where the flux 224 is hardly applied to the wiring member 142 and a portion where the flux 224 is well coated 142, so that the flux 224 can be applied in a sufficient thickness throughout the entire portion. For example, the portion where the flux 224 is hard to be applied may be a portion having a poor surface condition, cleanliness, an oxide film, a small surface roughness, or a hydrophobic property. The portion to which the flux 224 is well applied may be a portion having good surface condition, cleanliness, etc., no oxide film, large surface roughness, or hydrophilic property. That is, even if the surface morphology (for example, the distribution of the solder layer 142b, the distribution of the oxide film, or the like) or the cleanliness is not uniform, the flux 224 is forced by the strong pressure by the spray member 222, ) So that the flux 224 can be applied to a sufficient thickness in the entire portion. In particular, the flux 224 can be applied to the wiring member 142 having a rounded end face with a sufficient thickness over the entire area.

For example, the flux 224 may be formed entirely (e.g., from 95% to 100%, more specifically, from 99% to 100%) on the longitudinal surface of the wiring material 142, Can be from 2 um to 7 um. In this way, the flux 224 can be formed to a sufficient thickness on the entire surface of the wiring material 142 by the spraying method.

For example, in this embodiment, the wiring material 142 may have a circular cross-section. Since the flux 224 is applied and supplied to the wiring material 142, the flux 224 is not applied to the surface of the solar cell 150 do. Since the flux 224 is applied to the circular wiring material 142, the amount of the flux 224 adhering to the surface of the solar cell 150 can be minimized, and the performance of the solar cell 150 can be kept excellent can do.

On the other hand, when the wiring material 142 is applied by dipping in the flux 224, resistance due to surface tension is generated in a portion where the flux 224 is hardly applied, and the bubble 224c is positioned The flux layer 224a may not be formed in a portion where the flux 224 is hardly applied. In particular, when the cross-sectional shape of the wiring member 142 has a rounded portion or is circular, the resistance due to the surface tension can be increased more. Unlike the present embodiment, when the flux 224 is applied by the immersion process when the wiring material 142 has a specific shape as described above, it is more likely that the flux 224 is not formed entirely on the wiring material 142 .

In the present embodiment, a plurality of spray members 222 having at least one spray part 222a may be provided, and / or a plurality of spray parts 222a may be included in each spray member 222 . The distance between the spray member 222 and the wiring material 142 is set such that the flux 224 can be all applied to the plurality of wiring materials 142 when one spray member 222 having one spray part 222a is provided, Should be very large. The distance D1 between the spray member 222 and the wiring material 142 can be reduced by providing a plurality of spray members 222 and / or by having the spray member 222 have a plurality of spray portions 222a have.

For example, the distance D1 between the plurality of wiring materials 142 and the spray member 222 may be 1 cm to 50 cm. If the distance D1 between the wiring member 142 and the spray member 222 is less than 1 cm, the distance D1 between the wiring members 142 and the spray member 222 is too short, The flux 224 may not be applied to the spray member 222 or the spray member 222 may be arranged in a large number. When the distance D1 between the wiring member 142 and the spray member 222 exceeds 50 cm, the pressure when the flux 224 sprayed from the spray member 222 reaches the wiring member 142 is not large, The flux 224 may not be applied over the entire surface. In addition, the size of the flux unit 220 may be increased, which may make it difficult to reduce the size of the wiring material attaching apparatus 200. The distance D1 between the plurality of wiring members 142 and the spray member 222 may be 3 cm to 15 cm so that the flux 224 can be stably applied to the entire wiring member 142. [

At this time, the pitch D2 between the adjacent jetting portions 222a in the plurality of jetting portions 222a may be 1 cm to 3 cm, and the pitch D3 between the wiring materials 142 may be 4.75 mm to 26.13 mm. However, the present invention is not limited thereto. The pitch D2 between the jetting portions 222a may vary depending on the number of the jetting portions 222a and the pitch D3 between the wiring materials 142 may be such that interference does not occur with each other, And may be the same as or similar to the pitch of the wiring material 142 when attached.

 Alternatively, the ratio of the pitch D2 between the adjacent jetting portions 222a to the pitch D3 between the wiring materials 142 may be 1: 1 to 1: 4. The flux 224 injected from the jetting section 222a is simultaneously applied to the plurality of the wiring materials 142 in a spread state in the portion where the plurality of the wiring materials 142 are located. At least a part (particularly, a side portion) of the injected flux 224 can be injected so as to overlap each other at a portion where a plurality of wiring materials 142 are located. According to this, the flux 224 can be uniformly sprayed on the plurality of wiring materials 142.

For example, the injection pressure of the flux 224 injected from the injection part 222a may be 0.15 MPa to 0.4 MPa. If the jetting pressure of the flux 224 injected from the jetting section 222a is 0.15 MPa, the jetting pressure is insufficient and the flux 224 may not be uniformly injected into the wiring material 142. [ If the injection pressure of the flux 224 injected from the jetting section 222a exceeds 0.4 MPa, pressure may be applied to the wiring material 142 to change the characteristics of the wiring material 142. [ However, the present invention is not limited thereto, and the injection pressure may have a different value depending on the width of the wiring member 142, the distance D1 between the wiring member 142 and the spray member 222, and the like.

In FIG. 8, it is exemplified that one jetting section 222a is arranged to jet the flux 224 onto one wiring material 142. FIG. However, the present invention is not limited thereto. For example, the single jet part 222a may be arranged to jet the flux 224 to the plurality of wiring materials 142, and the plurality of jet parts 222a may be arranged to supply the flux 224 to one wiring material 142, As shown in FIG.

8 and 9A, one injection hole 222b through which the flux 224 is injected is provided in each injection part 222a. However, the present invention is not limited thereto. Therefore, as shown in Figs. 9B and 9C, a plurality of injection holes 222b may be provided in each jetting section 222a, and the arrangement thereof may be variously modified.

In the drawing, the spray device 220 is disposed on the upper side of the plurality of wiring materials 142, and the flux can be more stably sprayed to the plurality of wiring materials 142 by gravity. However, the present invention is not limited thereto. The position of the spraying member 220 can be variously changed, for example, the spraying member 220 is positioned on the lower or side of the plurality of wiring materials 142.

As described above, if the spray member 222 is provided, the flux 224 can be uniformly and entirely applied to the wiring material 142. [ However, since the amount of the flux 224 that is sprayed from the spray member 222 but is not applied to the wiring material 142 and is discarded increases, the cost may be greatly increased when the flux 224 is discarded. In view of this, in this embodiment, a feed member 226 providing flux 224 includes a recirculating member 226a that is sprayed from the spray member 222 to collect and provide the re-collected flux 224. The feed member 226 may further include a feedstock supply member 226a that provides unused flux 224 to the recirculation member 226a such that the amount of flux 224 to be re- A new flux 224 that is not used in the recirculation member 226a may be provided to provide a sufficient amount of flux 224 to the spray member 222. [

More specifically, the recirculating member 226a is located at the bottom of the spray member 222 and is located in the receiving portion 2262 where the flux 224 injected from the spray member 222 is received and connected to the receiving portion 2262 A drain tank 2264 for collecting the flux 224 discharged from the accommodating portion 2262 and a flux 224 collected in the drain tank 2264 are supplied to the spray member 222 by a desired amount And may include a driving member 2266. The driving member 2266 may be a variety of configurations such as a pump capable of providing a desired amount of flux 224 located in the drain tank 2264 to the spray member 222.

The raw material supply member 226b may be connected to the recirculating member 226a to provide a new flux 224 that is not used in the recirculating member 226a. In the drawing, for example, the raw material supply member 226b is connected to a drain tank 2264 to constitute a supply tank 2268 that supplies a new flux 224 to the drain tank 2264. [ The flux 224 used in the drainage tank 2264 and the unused flux 224 can be evenly mixed and the mixed flux 224 can be supplied to the supply pipe 2264a. However, the present invention is not limited thereto, and various modifications are possible, for example, the raw material supply member 226b is connected to the supply pipe 2264a or directly connected to the spray member 222. [

Between the drainage tank 2264 and the supply tank 2268, a regulating member 2269 capable of regulating the supply amount of the flux 224 to be supplied may be located. The adjustment member 2269 may be a variety of configurations such as pumps, valves, and the like that can supply the flux 224 stored in the new supply tank 2268 to the drain tank 2264 by a desired amount when needed.

The receiving portion 2262 may have an internal space located below the spray member 222 and receiving the flux 224 injected from the spray member 222 apart. The flux 224 received in the receiving portion 2262 flows along the connecting pipe 2262b connecting the receiving portion 2262 and the drain tank 2264 through the outlet 2262a and collected in the drain tank 2264 have.

In the receiving portion 2262, the outlet 2262a may be located at various positions capable of discharging the flux 224, for example, on the bottom surface of the receiving portion 2262. At this time, the bottom surface around the discharge portion 2262a may be inclined downward toward the discharge port 2262a. Then, the flux 224 located in the accommodating portion 2262 can be easily moved along the inclined surface to the discharge port 2262a and discharged through the discharge port 2262a. And a net 2262c may be located at the outlet 2262a or over the outlet 2262a to filter the impurities. Thus, only the flux 224 to be recirculated can be discharged through the discharge port 2262a.

And a supply pipe 2264a connecting the drainage tank 2264 and the spray member 222. [ The amount of the flux 224 flowing to the supply pipe 2264a or the amount and concentration of the flux 224 supplied to the spray member 222 can be measured by a sensor (not shown). As an example, the amount, concentration, etc. of the flux 224 can be checked in real time by the sensor. And the raw material supply member 226b supplies a new flux 224 to the drain tank 2264 when the amount of the flux 224 is insufficient or the concentration of the flux 224 becomes higher than a certain standard due to recirculation. Particularly, since the recirculated flux 224 can be gradually increased in concentration, the raw material supply member 226b provides an unused new flux 224 lower in concentration than the flux 224 in which the raw material supply member 226b is recirculated Thereby lowering the concentration of the flux 224.

In this embodiment, a blocking portion 2262d that seals the space between the spray member 222 and the receiving portion 2262 from the outside may be included. Accordingly, the space between the spray member 222 and the accommodating portion 2262 during the spraying process can be shut off from the outside and sealed. This allows the flux 224 to be injected at a high pressure and not vaporized to the maximum and to prevent the flux 224 from flowing out during the spraying process.

For example, the blocking portion 2262d has a shape that encloses the side surface of the space between the spray member 222 and the receiving portion 2262, and can move up and down. When the wiring material 142 enters or exits, the blocking portion 2262d is located at a first position where the space between the spray member 222 and the accommodating portion 2262 is communicated with the outside so that the wiring material 142 can easily move . When the spraying process is performed, the blocking portion 2262d may be located at a second position that seals the space between the spray member 222 and the accommodating portion 2262 from the outside. Alternatively, the blocking portion 2262d may have a chamber shape having a door through which the spray member 222 and the accommodating portion 2262 are located and through which the wiring member 142 passes. In addition, the blocking portion 2262d may have various structures, schemes, shapes, and the like.

The flux 224 applied to the wiring material 142 through the flux portion 220 forms a flux layer 224a surrounding the outer circumferential surface of the wiring material 142 when the flux 224 passes through the drying portion 230. The thickness of the flux layer 224a formed in this way may be between 2 um and 7 um. The oxide located on the surface of the wiring material 142 can be effectively removed by the thickness of the flux layer 224a, thereby improving the bonding property between the wiring material 142 and the solar cell 150. [ However, the present invention is not limited thereto, and the thickness of the flux layer 224a may have a different value.

The drying unit 230 may have a variety of structures for drying the flux 224. For example, the drying unit can dry the flux 224 by wind, heat, or the like. The present invention is not limited to the structure, the method, and the like of the drying unit 230.

The drying process in the drying section 230 may be performed at a process temperature of 70 ° C to 90 ° C for 1 second to 10 minutes. If the process temperature is less than 70 ° C or the process time is less than 1 second, the drying may not be performed well. If the process temperature exceeds 90 ° C, if the process time exceeds 10 minutes, the cost and time of the process may increase. The process time of drying may be 1 second to 5 seconds in consideration of process efficiency and the like. However, the present invention is not limited thereto, and the process temperature and time may have different values.

For the sake of simplicity and clear illustration, the specific structure of the drying unit 230 is not shown, and various structures can be applied. The flux portion 220 and the drying portion 230 may be located together inside the single 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.

According to the wiring material adhering apparatus 200 according to the present embodiment, the wiring material 142 including the rounded portion and including the solder layer for soldering can be attached to the solar cell 150 by an automated system. And the recycle member 226a can be provided, and the flux 224 can be recycled and reused, thereby greatly reducing the manufacturing cost. Particularly, in the wiring material 142 including the rounded portion, a spray process may be used to uniformly form the flux layer 224a. The spray process may include a step of spraying the flux 224a, which has been sprayed more than the other process but does not form the flux layer 224a ) Is very large. The recycling member 226a according to the present embodiment is applied to the wiring material attaching apparatus 200 to which the spraying process is applied so that the waste of the flux 224 that may occur in this case can be greatly reduced.

Features, structures, effects and the like according to the above-described embodiments are included in at least one embodiment of the present invention, and the present invention is not limited to only one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

100: Solar panel
150: Solar cell
142: wiring material
200: Wiring material attachment device
210: Wiring material supply part
220: Flux part
222:
224: Flux
226: Supply member
226a: recirculating member
226b: raw material supply member
230: Drying section
240: wiring material withdrawal portion
250:

Claims (16)

A flux member including a spray member having a spray member for spraying flux onto a wiring material including a core layer and a solder layer formed on a surface of the core layer, and a supply member for supplying the flux to the spray member; And
The solar cell module according to any one of claims 1 to 3, wherein the solder layer
Lt; / RTI >
Wherein the supply member collects and recirculates the flux sprayed from the spray member to the spray member, and includes a recirculating member. The method according to claim 1,
Wherein the recirculating member includes a receiving portion that is located at a lower portion of the spray member and that receives the flux sprayed from the spray member, a drain tank that is connected to the receiving portion and collects the flux discharged from the receiving portion, And a driving member for supplying the flux collected in the spray member to the spray member. 3. The method of claim 2,
Wherein the driving member comprises a pump. 3. The method of claim 2,
Wherein the receiving portion includes an outlet connected to a connecting pipe connecting the receiving portion and the drain tank,
Wherein the discharge port is located on a bottom surface of the accommodating portion and the bottom surface is inclined downward toward the discharge port. 3. The method of claim 2,
Wherein the receiving portion includes an outlet connected to a connecting pipe connecting the receiving portion and the drain tank,
And a net for filtering impurities is disposed on the discharge port or on the discharge port. 3. The method of claim 2,
Wherein the supplying member further comprises a raw material supplying member connected to the recirculating member to supply unused flux to the recirculating member. The method according to claim 6,
Wherein the raw material supply member is connected to the drain tank to provide a flux unused in the drain tank. 8. The method of claim 7,
And a supply pipe connecting the drain tank and the spray member,
Wherein the raw material supply member provides unused flux to the drain tank when the concentration of the flux flowing through the supply pipe is higher than a predetermined reference or the amount of the flux is insufficient. 9. The method of claim 8,
Wherein the raw material supply member provides an unused flux having a concentration lower than the concentration of the flux flowing through the supply pipe to the drain tank when the concentration of the flux flowing through the supply pipe is higher than a predetermined reference. 3. The method of claim 2,
And a blocking portion that seals a space between the spray member and the accommodating portion from the outside. The method according to claim 1,
A plurality of the wiring members are arranged so as to be spaced apart from each other in the flux portion,
Wherein a plurality of the spray members are provided and the plurality of spray portions are provided or a plurality of the spray portions are provided in each of the spray members. 12. The method of claim 11,
Wherein the distance between the wiring member and the spray member is 1 cm to 50 cm. 12. The method of claim 11,
And a distance between the plurality of jetting portions is 1 cm to 3 cm. 12. The method of claim 11,
Wherein a ratio of a distance between the plurality of jetting portions to a distance between the wiring materials is 1: 1 to 1: 4. The method according to claim 1,
Wherein an injection speed or an injection pressure of the flux injected by the spray member is 0.15 MPa to 0.4 MPa. The method according to claim 1,
Wherein the wiring material includes a rounded portion or has a circular cross-sectional shape.

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