WO2019107589A1

WO2019107589A1 - Ribbon soldering apparatus for thin silicon solar cell module

Info

Publication number: WO2019107589A1
Application number: PCT/KR2017/013776
Authority: WO
Inventors: 김학동; 정인수; 최규훈; 금재열; 김슬기
Original assignee: 주식회사 씨엔아이
Priority date: 2017-11-29
Filing date: 2017-11-29
Publication date: 2019-06-06

Abstract

The present invention relates to a ribbon soldering apparatus for a thin silicon solar cell module, the apparatus being provided on a table (T) having a robot (10) for picking up and transporting a solar cell (C) loaded from a cassette (Ca), a cell transport unit (30) for transporting the solar cell (C) picked up by the robot (10), a paste dispenser (40) for applying a conductive paste on finger electrodes (E) of the solar cell (C) transported by the cell transport unit (30), a ribbon supply unit (50) for supplying a plurality of ribbons (R) cut into predetermined lengths, and a module stage (60) having the paste-coated solar cell (C) and the plurality of ribbons (R) arranged thereon. The ribbon soldering apparatus comprises: a working guide rail (110) transported on one pair of base guide rails (111) provided on both sides of the module stage (60); a cell pickup and transport unit (120), which is provided on one side of the working guide rail (110) so as to be transported, and picks up and transports the solar cell (C) between the cell transport unit (30) and the module stage (60); a ribbon pickup and transport unit (130), which is provided on the other side of the working guide rail (110) so as to be transported, and picks up and transports the plurality of ribbons (R) between the ribbon supply unit (50) and the module stage (60); and a soldering unit (140), which is provided on the working guide rail (110) between the cell pickup and transport unit (120) and the ribbon pickup and transport unit (130) so as to be transported, and solders the ribbons (R) to the finger electrodes (C).

Description

Ribbon Soldering Device for Thin Silicon Solar Module

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ribbon soldering apparatus for a thin silicon solar cell module, and more particularly, to a ribbon soldering apparatus for a thin silicon solar cell module that automatically transfers and sold a plurality of solar cells and a ribbon.

A solar cell converts the energy of solar light into electric energy, and is usually realized by arranging a plurality of solar cells in rows and columns. At this time, the solar cell is largely divided into a silicon semiconductor as a material and a compound semiconductor as materials, and silicon is widely used because of its high productivity and reliability.

Meanwhile, the solar cell includes a solar cell module in which square-shaped solar cells are connected by a metal ribbon (hereinafter, referred to as ribbon). The ribbon is welded to each solar cell Lt; / RTI > A prior art related thereto is disclosed in Patent Publication No. 10-2012-0033691 under the name of a solar cell ribbon soldering apparatus and method.

However, since the solar cell module is composed of several tens of solar cells, for example, 24 solar cells, it is a very important factor to increase the productivity of the solar cell by accurately and quickly soldering the ribbon to the finger electrode of each solar cell. Accordingly, there is a growing need for a technique for automatically performing a series of processes for supplying solar cells, supplying the ribbon, and automatically soldering the supplied ribbon to the finger electrode of the solar cell.

It is an object of the present invention to provide a ribbon soldering apparatus for a thin silicon solar module capable of increasing productivity by automatically transferring and soldering a plurality of solar cells and ribbons to meet the above needs do.

In order to achieve the above object, a ribbon soldering apparatus for a thin silicon solar cell module according to the present invention includes a robot 10 for picking up and transferring a solar cell C loaded from a cassette Ca, (20) for aligning the position of the solar cell (C) to be picked up by the aligner (10), a cell for transporting the solar cell (C) A paste dispenser 40 for applying a conductive paste to the finger electrode E of the solar cell C transferred by the cell transfer section 30, A ribbon supply unit 50 for supplying a plurality of ribbons R and a table T for installing a solar cell C on which the paste is applied and a module stage 60 on which the plurality of ribbons R are arranged , And a pair of base gauges provided on both sides of the module stage (60) An operation guide rail 110 which is transported on the drain 111; The cell pickup transfer unit 120 is installed to be transferred to one side of the operation guide rail 110 and includes a cell pickup cell 120 for picking up and transferring the solar cell C between the cell transfer unit 30 and the module stage 60, ; The ribbon pick-up transferring unit 130, which is installed to be transferred to the other side of the operation guide rail 110 and picks up and transfers the plurality of ribbons R between the ribbon supply unit 50 and the module stage 60, ; And a soldering part for soldering the ribbon R to the finger electrode C, which is installed to be transferred to the operation guide rail 110 between the transfer part 120 and the ribbon pickup transfer part 130, 140). &Lt; / RTI >

In the present invention, the cell pickup transport unit 120 includes a first slider 121 transported on the operation guide rail 110; A first vertical rail 122 installed on the first slider 121; A first vertical rake bracket 123 installed on the first vertical rail 122 to be elevated; And a pick-up head 124 supported by the first lifting bracket 123 and having a plurality of suction nozzles 124a for suctioning the corner side of the solar cell C.

In the present invention, the ribbon pickup transfer unit 130 includes: a second slider 131 transferred on the operation guide rail 110; A second vertical rail 132 installed on the second slider 131; A second lifting bracket 133 installed on the second vertical rail 132 so as to be lifted and lowered; And a ribbon pick-up head 134 supported by the second lifting bracket 133 and having a plurality of suction nozzles 134a for simultaneously attracting a plurality of ribbons R seated on the ribbon stage 53 do.

In the present invention, the soldering portion 140 includes a third slider 141 to be transferred on the operation guide rail 110; A third vertical rail 142 installed on the third slider 141; A third lifting bracket 143 mounted on the third vertical rail 142 so as to be lifted and lowered; And a soldering head 144 supported by the third lifting bracket 143 for soldering the plurality of ribbons R to the finger electrodes E.

A pair of

electrode tips

144a and 144b are provided at both ends of the soldering head 144 and press both ends of the ribbon R seated on the finger electrode E.

In the present invention, a plurality of pressing tips 144c are provided between the pair of

electrode tips

144a and 144b to elastically press the soldering head 144 downward.

According to the present invention, as the cell pickup section, the ribbon pickup section, and the soldering section are independently transported on the operation guide rail, pickup and transport of the solar cell C, pickup and transport of the plurality of ribbons R, A series of operations for soldering the solar cell module R to the finger electrode E of the solar cell cell are automatically performed so that the solar cell module M in which the solar cell C is connected by a plurality of ribbons R It can be manufactured quickly and accurately, and productivity can be improved.

In addition, since the ribbon R can be uniformly soldered to the finger electrode E, it is possible to realize a solar cell module with a constant quality.

And because the soldering is done automatically, the worker is not exposed to harmful solder vapors and the work environment can be improved.

1 is a view illustrating a ribbon soldering apparatus for a thin silicon solar cell module according to the present invention installed on a table,

Fig. 2 is a side view of Fig. 1,

FIG. 3 is a perspective view showing the robot, the cell, and the paste dispenser of FIG. 1,

FIG. 4 is a view for explaining a cell transferring and paste transferring unit of FIG. 3,

Fig. 5 is a perspective view illustrating the ribbon supply unit of Fig. 1,

FIG. 6 is a perspective view illustrating the module stage of FIG. 1,

FIG. 7 is a perspective view illustrating the module transfer of FIG. 1,

FIG. 8 is a perspective view showing the ribbon soldering apparatus of the present invention shown in FIG. 1,

Fig. 9 is a plan view of the ribbon soldering apparatus of Fig. 8,

Fig. 10 is a front view of the ribbon soldering apparatus of Fig. 8,

FIG. 11 is a perspective view illustrating the cell pickup of FIG. 8 through FIG. 10,

FIG. 12 is a perspective view illustrating the cell pickup of FIG. 8 through FIG. 10,

FIG. 13 is a perspective view showing the soldering portion of FIGS. 8 to 10,

Hereinafter, a ribbon soldering apparatus for a thin silicon solar cell module according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view for explaining that a ribbon soldering apparatus for a thin silicon solar cell module according to the present invention is installed on a table, and FIG. 2 is a side view of FIG.

A ribbon soldering apparatus (100) for a thin silicon solar cell module according to the present invention comprises a robot (10) picking up and transferring a solar cell (C) loaded from a cassette (Ca); An aligner (20) for aligning the position of the solar cell (C) picked up by the robot (10); A cell transfer section 30 for transferring the solar cell C aligned by the aligner 20; A paste dispenser 40 for applying a conductive paste to the finger electrode E of the solar cell C transferred by the cell transfer section 30; A ribbon supply unit (50) for supplying a plurality of ribs (R) cut by a predetermined length; A module stage 60 in which a plurality of ribbon Rs are arranged and a solar cell module M in which a ribbon R is composed of a plurality of solar cells C soldered On the table T on which the module transfer 70 for picking up and transferring the module transfer 70 is mounted.

Here, as shown in FIG. 3, the solar cell C includes a large number of finger electrodes formed on both sides, that is, four finger electrodes E in this embodiment. A plurality of (R) ribbons R are soldered to each of the finger electrodes E on both sides of the solar cell C to form a solar cell module M in which the solar cell and the other solar cell are connected to each other .

FIG. 3 is a perspective view showing the robot, the cell, and the paste dispenser of FIG. 1, and FIG. 4 is a view for explaining a cell transferring and paste transferring unit of FIG. Fig. 6 is a perspective view showing an excerpt of the module stage of Fig. 1, and Fig. 7 is a perspective view showing an excerpt of the module transfer of Fig. 1. As shown in Fig.

3, the robot 10 includes an arm 12 rotated by a robot body 11 supported on a table T, and an arm 12 mounted on the arm 12 and mounted on the cassette Ca, And a pick-up head 13 for picking up the battery cell C.

The aligner 20 includes a vision camera installed inside the table T on the rotation path of the pickup head 13 of the robot as shown in Figs. The aligner 20 generates alignment information of the solar cell C picked up on the pick-up head 13 so that the pickup head 13 picks up the solar cell C from the cell- So that it can be accurately mounted on the cell stage 33.

3, the cell conveying section 30 includes a cell conveying guide rail 31 supported on the table T, a driving slider 32 conveyed on the cell conveying guide rail 31, A cell stage 33 on which an aligned solar cell C transported by the cell array 10 is mounted and a cell stage pivotal portion 34 for rotatably supporting the cell stage 33 on the driving slider 32, . At this time, a plurality of electrode exposed line holes 33a are formed so that the finger electrodes E formed on the back surface of the solar cell C to be mounted on the cell stage 33 are exposed downward.

The cell stage 33 transports the aligned aligned solar cell C between the paste dispenser 40 and the module stage 60. At this time, on the surface of the cell stage 33, there are formed a plurality of adsorption holes (not shown) in which adsorption vacuum pressure is formed so as to maintain the state where the solar cell C is fixed during transportation.

The cell stage swivel portion 34 applies a paste to the finger electrode E on the front surface of the solar cell C after the paste dispenser 40 described later is applied to the finger electrode formed on the back surface of the solar cell C The cell stage 33 is rotated by 180 DEG to apply the paste. The finger electrode on the back surface of the solar cell C is exposed to the paste dispenser 40 side through the electrode exposure line hole 33a by the cell stage swivel portion 34. [

The paste dispenser 40 is for applying a conductive paste to the finger electrode E of the solar cell C mounted on the cell stage 33. 3 and 4, the paste dispenser 40 includes a plurality of discharge nozzles (four discharge nozzles 41 in this embodiment) for discharging the paste, and a plurality of discharge nozzles 41 for supporting the discharge nozzles 41 A bracket 42 and a support 43 for supporting the bracket 42 on the table.

The cell is then conveyed by the conveyor 30 and the paste dispenser 40. The aligned cell cell C transported by the pick-up head 13 is seated on the cell stage 33 and the cell stage 33 is transported on the cell transport guide rail 31 by the drive slider 32 And the discharge nozzle 41 is transported to the lower side of the paste dispenser 40. The discharge nozzle 41 is electrically connected to the finger electrode E on the front surface of the solar cell C transferred by the cell stage, .

The conductive slider 32 moves the cell stage 33 away from the position corresponding to the paste dispenser 40 and the cell stage 33 The coil 34 rotates the cell stage 33 to expose the finger electrode on the back surface of the solar cell C through the electrode exposure line hole 33a and by repeating the above operation, And the conductive face is applied to the finger electrode exposed through the exposed line hole 33a.

As shown in Fig. 5, the ribbon supply unit 50 includes a plurality of ribbon supply wheels 51, in this embodiment, four ribbon supply wheels 51; A cutter (52) for cutting the ribbon (R) supplied independently from the plurality of ribbon supply wheels (51) by a predetermined length; And a ribbon stage 53 in which a plurality of seating grooves 53a on which the ribbon R cut by the cutter 52 is seated is formed. A plurality of ribbons supplied from the ribbon supply wheel 51 are cut to a predetermined length via the cutter 52 and the cut ribbons R are inserted into the seating grooves 53a of the ribbon stage 53, Respectively.

6, the module stage 60 is provided inside the table T and includes a plurality of suction holes (not shown) for sucking and fixing the photovoltaic cell C coated with the paste, And a plurality of ribbon placement grooves 61 in which a plurality of ribbons R are disposed. In the present embodiment, the module stage 60 has a structure in which the solar cell C is arranged in six rows and four columns.

As shown in Fig. 7, the module transfer 70 includes: a column 71 supported by an outer table of the module stage 60; A conveying guide rail 72 supported by the column 71; A feed slider 73 which is fed to the feed guide rail 72; A lifting bracket 74 which is lifted and lowered by the transfer slider 73; And a module feed pick-up 75 for picking up and transporting the solar cell module M composed of a plurality of cells C supported on the module stage 60 and supported by the lift brackets 74. When the plurality of solar cells C on the module stage 60 are connected by the ribbon R to become the solar cell module M, the module transfer 110 transfers the module transfer pick- The module transfer pick-up 115 is transferred to the outside of the table T to transfer the picked-up solar cell module M to the module M side.

FIG. 8 is a perspective view showing the ribbon soldering apparatus of the present invention shown in FIG. 1, FIG. 9 is a plan view of the ribbon soldering apparatus of FIG. 8, and FIG. 10 is a front view of the ribbon soldering apparatus of FIG.

The ribbon soldering apparatus 100 for a thin silicon solar cell module according to the present invention installed in the table T of FIGS. 1 and 2 is mounted on a pair of base guide rails 111 provided on both sides of the module stage 60 An operation guide rail 110; A cell pickup transfer unit 120 which is installed to be transferred to one side of the operation guide rail 110 and which picks up and transfers the solar cell C between the cell transfer unit 30 and the module stage 60; A ribbon pickup transferring part 130 installed to be transferred to the other side of the operation guide rail 110 and picking up and transferring a plurality of ribbons R between the ribbon supply unit 50 and the module stage 60; A soldering portion 140 installed to be transferred to the operation guide rail 110 between the cell pickup 120 and the ribbon pickup transferring portion 130 and soldering the ribbon R to the finger electrode C; .

The operation guide rails 110 are transportably supported on a pair of base guide rails 1111 provided on both sides of the module stage 60, as shown in Fig.

The cell pickup-up transfer unit 120, the ribbon pickup transfer unit 130, and the soldering unit 140 are independently transportably installed on the operation guide rail 110, and operate independently of each other.

Fig. 11 is a perspective view showing the cell pickup of Figs.

The cell pickup transfer unit 120 is provided so as to be transferable to one side of the operation guide rail 110 and picks up and transfers the solar cell C between the cell transfer unit 30 and the module stage 60. The cell pickup transfer unit 120 includes a first slider 121 to be transported on the operation guide rail 110; A first vertical rail 122 installed on the first slider 121; A first vertical rake bracket 123 mounted on the first vertical rail 122 so as to be raised and lowered; And a pick-up head 124 supported by the first lifting bracket 123 and having a plurality of suction nozzles 124a for suctioning the corner side of the solar cell C.

The pickup head 124 is moved on the operation guide rail 110 by the first slider 121 and moved to the position corresponding to the cell stage 33 of the sending section 30 by the cell pickup- And then the first lifting bracket 123 is lifted on the first vertical rail 122 to pick up the solar cell C that is seated on the cell stage 33 and then the pickup head 124 is transported The photovoltaic cell C is placed on the small section of the module stage 60.

FIG. 12 is a perspective view illustrating the cell pickup of FIG. 8 through FIG.

The ribbon pick-up transfer unit 130 is provided so as to be transferable to the other side of the operation guide rail 110 to pick up and transfer the plurality of ribbons between the ribbon supply unit 50 and the module stage 60. The ribbon pickup transfer unit 130 includes a second slider 131 to be transferred on the operation guide rail 110; A second vertical rail 132 installed on the second slider 131; A second lifting bracket 133 mounted on the second vertical rail 132 so as to be lifted and lowered; And a ribbon pick-up head 134 supported by the second lifting bracket 133 and having a plurality of suction nozzles 134a for simultaneously attracting a plurality of ribbons R seated on the ribbon stage 53. [

The ribbon pick-up head 134 is transported on the operation guide rail 110 by the second slider 131 to be transported to the ribbon stage 53 of the ribbon supply unit 50 And then the second lifting bracket 133 is lifted and lowered on the second vertical rail 132 to pick up a plurality of ribbons R seated on the ribbon stage 53 at one time, The plurality of ribbons R are mounted on the finger electrode F of the solar cell C or the ribbon placement groove 61 of the module stage.

FIG. 13 is a perspective view illustrating the soldering portion of FIGS. 8 to 10. FIG.

The soldering portion 140 is soldered to the finger electrode C while being transferred to the operation guide rail 110 between the cell pickup transfer portion 120 and the ribbon pickup transfer portion 130. 10, the soldering portion 140 includes a third slider 141 to be transported on the operation guide rail 110; A third vertical rail 142 installed on the third slider 141; A third lifting bracket 143 mounted on the third vertical rail 142 so as to move up and down; And a soldering head 144 supported by the third lifting bracket 143 for soldering a plurality of ribbons R to the finger electrodes E.

Both ends of the soldering head 144 include a pair of

electrode tips

144a and 144b for pressing both ends of the ribbon R that are seated on the finger electrode E. The

electrode tips

144a and 144b supply power to the ribbon R for a power supply of, for example, 150 to 160 V for about three seconds to heat the ribbon R itself, The ribbon (R) and the finger electrode (E) are soldered.

A plurality of pressing tips 144c are provided between the pair of

electrode tips

144a and 144b so as to be elastically pressed downward from the soldering head 144. This pressure tip 144c is elastically pressed downward from the soldering head 144 so that the pressure tip 144c evenly presses the ribbon R between the

electrode tips

144a and 144b, To be evenly soldered to the finger electrode (E).

The soldering head 144 is moved by the third slider 141 to the position corresponding to the photovoltaic cell C that is carried on the operation guide rail 110 and is seated on the module stage 60 by the soldering part 140, And then the third lift bracket 143 is lifted and lowered on the third vertical rail 142 so that the

electrode tips

144a and 144b of the soldering head 144 and the pressure tip 144c are moved to the finger electrodes E And presses the plurality of placed ribbons R. A plurality of ribbons R are soldered to the finger electrodes E at once by applying power to the

electrode tips

144a and 144b to heat the ribbon R and the conductive paste.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

According to the present invention, the cell pickup transfer section 120, the ribbon pickup transfer section 130 and the soldering section 140 are independently transported on the operation guide rail 110 to pick up and transport the solar cell C, A series of operations for soldering the plurality of ribbons R to the finger electrode E of the solar cell are automatically performed so that the solar cell C is divided into a plurality of ribbons R The solar cell module M can be manufactured quickly and accurately, and productivity can be improved.

Claims

A robot 10 for picking up and transporting the solar cell C loaded from the cassette Ca and an aligner for aligning the position of the solar cell C picked up and transported by the robot 10 A cell transfer unit 30 for transferring the solar cell C aligned by the aligner 20 and a transfer unit 30 for transferring the solar cell C A ribbon dispensing unit 50 for supplying a plurality of ribs R cut by the predetermined length to the finger electrode E of the photovoltaic cell E, Is provided in a table (T) on which a cell (C) and a module stage (60) on which the plurality of ribbons (R)

An operation guide rail 110 which is conveyed on a pair of base guide rails 111 provided on both sides of the module stage 60;

The cell pickup transfer unit 120 is installed to be transferred to one side of the operation guide rail 110 and includes a cell pickup cell 120 for picking up and transferring the solar cell C between the cell transfer unit 30 and the module stage 60, ;

The ribbon pick-up transferring unit 130, which is installed to be transferred to the other side of the operation guide rail 110 and picks up and transfers the plurality of ribbons R between the ribbon supply unit 50 and the module stage 60, ; And

The cell pick-up is provided to be transferred to the operation guide rail 110 between the transfer unit 120 and the ribbon pick-up transfer unit 130 and is provided with a soldering unit 140 for soldering the ribbon R to the finger electrode C ); And a ribbon soldering apparatus for a thin silicon solar cell module.
The method of claim 1, wherein the cell pickup is a transfer unit (120)

A first slider 121 to be transported on the operation guide rail 110;

A first vertical rail 122 installed on the first slider 121;

A first vertical rake bracket 123 installed on the first vertical rail 122 to be elevated;

And a pick-up head (124) supported by the first lifting bracket (123) and having a plurality of suction nozzles (124a) for suctioning the corner side of the solar cell (C) Ribbon soldering device for battery module.
The ribbon pick-up transferring apparatus according to claim 1,

A second slider 131 which is transferred on the operation guide rail 110;

A second vertical rail 132 installed on the second slider 131;

A second lifting bracket 133 installed on the second vertical rail 132 so as to be lifted and lowered;

And a ribbon pick-up head 134 supported by the second lifting bracket 133 and having a plurality of suction nozzles 134a for simultaneously attracting a plurality of ribbons R seated on the ribbon stage 53 Wherein the ribbon-like solder is a ribbon soldering device for a thin silicon solar cell module.
The method of claim 1, wherein the soldering portion (140)

A third slider 141 to be transported on the operation guide rail 110;

A third vertical rail 142 installed on the third slider 141;

A third lifting bracket 143 mounted on the third vertical rail 142 so as to be lifted and lowered;

And a soldering head (144) supported by the third lifting bracket (143) for soldering the plurality of ribbons (R) to the finger electrodes (E) Soldering device.
5. The method of claim 4,

And a pair of electrode tips 144a and 144b provided at both ends of the soldering head 144 to press both ends of the ribbon R that are seated on the finger electrodes E. [ Ribbon soldering device for module.
6. The method of claim 5,

Wherein a plurality of pressing tips 144c are provided between the pair of electrode tips 144a and 144b so as to be elastically pressed downward from the soldering head 144. The ribbon soldering apparatus of claim 1,