CN105185857B - Photovoltaic solar cell assembly welding band - Google Patents

Photovoltaic solar cell assembly welding band Download PDF

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Publication number
CN105185857B
CN105185857B CN201510574718.6A CN201510574718A CN105185857B CN 105185857 B CN105185857 B CN 105185857B CN 201510574718 A CN201510574718 A CN 201510574718A CN 105185857 B CN105185857 B CN 105185857B
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China
Prior art keywords
welding
belt body
solar cell
face
cell assembly
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Expired - Fee Related
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CN201510574718.6A
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Chinese (zh)
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CN105185857A (en
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刘畅
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Liu Chang International Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The invention relates to a solar cell assembly welding band. The photovoltaic solar cell assembly welding band is characterized by comprising a welding band body, a front face and a back face of the welding band body are sequentially provided with welding faces and non-welding faces alternately, the welding faces are provided with multiple chamber zones denting into surfaces of the welding faces, the chamber zones can greatly improve the contact area of the welding band and solder paste, SMT welding performance is improved, and insufficient welding risks can be greatly reduced compared with the traditional welding band welding technology; solidified column-shaped welding slurry is formed in the chamber zones, mechanical connection and electrical connection of the welding slurry and welding portions can be greatly improved, and exhaustion of air generated by the welding slurry in a welding band welding face in the welding process is facilitated. According to the photovoltaic solar cell assembly welding band, the welding band body employs copper bands or surface-processed copper bands instead of tin-plated welding bands utilized by routine photovoltaic assembly, the welding band body does not require tin-plating surface processing, the welding band body employs the surface passivation treatment process or a non-welding face coating anticorrosion material, or the non-welding surfaces are plated with a reflection material layer.

Description

Photovoltaic solar cell assembly welding
Technical field
The present invention relates to a kind of photovoltaic solar cell assembly welding, especially a kind of photovoltaic solar crystal silicon cell group The welding of part smt welding procedure.
Background technology
Solaode welding also known as tin-coated copper strip or applies stannum copper strips, for the connection of photovoltaic module cell piece.Welding is Important raw and processed materials during welding photovoltaic component, the collection directly influencing photovoltaic module electric current is imitated by the quality of welding quality Rate, affects very big on the power of photovoltaic module.Welding must accomplish firm welding during series cells, it is to avoid empty The generation of weldering dry joint phenomenon.There is following defect in existing welding: (1) welding surface needs are tin plating, increased the manufacture of welding Cost and manufacture difficulty;(2) due to welding electroplating surfaces with tin, thus reducing the conductive capability of solder side;(3) in existing crystal In silicon cell welding procedure, using traditional electric cautery or string welder tin-coated copper strip, the phenomenon of rosin joint easily occurs.
Content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, provides a kind of photovoltaic solar cell assembly weldering Band, this welding cooperation photovoltaic special smt tin cream ensure that welding firm welding, can avoid rosin joint phenomenon.
The technical scheme providing according to the present invention, described photovoltaic solar cell assembly welding, it is characterized in that: include welding Belt body, in front and back cycle arrangement solder side and the non-solder face successively of welding belt body, arranges some recessed in solder side The cavity area on solder side surface.
In a detailed embodiment, described solder side and non-solder face are plane, in the setting connection weldering of welding belt body Junction and the through hole in non-solder face.
In a detailed embodiment, the solder side of described welding belt body and non-solder face are serrated face.
In a detailed embodiment, many along the length direction processing of welding belt body in the solder side of described welding belt body Arrange the shrinkage pool on recessed solder side surface, process projection corresponding with the shrinkage pool of solder side in the non-solder face of welding belt body.
In a detailed embodiment, process between the shrinkage pool of described solder side and the projection in corresponding non-solder face Through hole.
In a detailed embodiment, the adjacent line at shrinkage pool center in described shrinkage pool and adjacent row and welding belt body Width there is angle.
In a detailed embodiment, the sawtooth number in the width serrated face of described welding belt body is 5~12, Serration depth is 0.1~0.3mm, included angle 1=140 °~170 ° between serrated surface and welding belt body surface, welding belt body 2=110 ° of sawtooth angle φ~130 ° of front and back.
In a detailed embodiment, the serration depth 0.04~0.1mm of described serrated face, welding belt body front and the back of the body Sawtooth angle φ=110 °~140 ° in face.
In a detailed embodiment, the depth of described shrinkage pool is 0.04~0.24mm, raised height is 0.04~ 0.1mm;Angle between described raised sidepiece and the non-solder face of welding belt body is 110 °~130 °.
In a detailed embodiment, described shrinkage pool and projection are using triangle, circular or rectangle.
Welding of the present invention can substantially improve welding contact, on the one hand reduces the generation of rosin joint and the product of thermal stress Raw, the raising electric conductivity of another aspect welding, bring the raising of component power, reduce the integrated cost of material simultaneously.
Brief description
Fig. 1-1 is a kind of structural representation of embodiment of welding in embodiment one.
Fig. 1-2 is the structural representation of welding another embodiment in embodiment one.
Fig. 2 is the structural representation of welding described in embodiment two.
Fig. 3 is the structural representation of welding described in embodiment three.
Fig. 4 is the structural representation of welding described in example IV.
Fig. 5 is the structural representation of welding described in embodiment five.
Fig. 6 is the structural representation in welding non-solder face described in embodiment six.
Fig. 7 is the structural representation of welding solder side described in embodiment six.
Fig. 8 is the overall diagram of welding described in embodiment six.
Fig. 9 is the structural representation of welding described in embodiment seven.
Figure 10 is the structural representation of welding described in embodiment eight.
Figure 11 is the structural representation implementing welding described in nine.
Figure 12 is the structural representation of welding described in embodiment ten.
Figure 13 is the structural representation of welding described in embodiment 11.
Specific embodiment
With reference to concrete accompanying drawing, the invention will be further described.
Embodiment one:
As Figure 1-1, described photovoltaic solar cell assembly welding includes welding belt body 1, the front of welding belt body 1 and The back side is plane.
As shown in Figure 1-2, described welding belt body 1 can also process various sizes by the way of rolling or punching press With the through hole 2 of shape, through hole 2 is arranged side by side 1~5 on the width of welding belt body 1, and the diameter d of through hole 2 is 0.1~ 0.5mm.
Embodiment two:
As shown in Fig. 2 described photovoltaic solar cell assembly welding includes welding belt body 1, the front of welding belt body 1 and the back of the body Face is shape, equivalently-sized serrated face;It is 5~12 in the sawtooth number of the width serrated face of described welding belt body 1, saw Tooth depth is 0.1~0.3mm, included angle 1=140 °~170 ° between serrated surface and welding belt body 1 surface, welding belt body 1 2=110 ° of sawtooth angle φ~130 ° of front and back.
Embodiment three:
As shown in figure 3, the through hole 2 of various sizes and shape is processed on welding belt body 1 described in embodiment two.
Example IV:
As shown in figure 4, described photovoltaic solar cell assembly welding includes welding belt body 1, the front of welding belt body 1 and the back of the body Face is shape, equivalently-sized serrated face;It is 5~12 in the sawtooth number of the width serrated face of described welding belt body 1, saw Tooth depth is 0.04~0.1mm, sawtooth angle φ=110 °~140 ° of welding belt body 1 front and back.
Embodiment five:
As shown in figure 5, the through hole 2 of various sizes and shape is processed on welding belt body 1 described in example IV.
Embodiment six:
As shown in Figure 6 to 8, described photovoltaic solar cell assembly welding includes welding belt body 1, connects electricity according to required The size of pond piece, in the front and back cycle arrangement solder side s1 and non-solder face s2 successively of welding belt body 1, in welding procedure In, the solder side of welding belt body 1 and welding of battery film;Specifically as shown in figure 8, welding belt body 1 front is the region of solder side s1, The corresponding back side is non-solder face s2;The front of welding belt body 1 is the region of non-solder face s2, and the corresponding back side is solder side s1;The length of solder side s1 and non-solder face s2 determines according to the required size connecting cell piece, such as 156mm, 125mm, 78mm, 52mm、39mm;
Described welding belt body 1 solder side s1 along welding belt body 1 length direction process multiple rows of recessed solder side surface Shrinkage pool 3, welding belt body 1 non-solder face s2 process corresponding with the shrinkage pool 3 of solder side s1 raised 4;The depth of described shrinkage pool 3 Spend for 0.04~0.24mm;Angle between the non-solder face s2 of described raised 4 sidepiece and welding belt body 1 is 110 °~ 130°.
As shown in Figure 6, Figure 7, the width of the adjacent line at shrinkage pool 3 center in described shrinkage pool 3 and adjacent row and welding belt body 1 Degree direction has angle.
Described shrinkage pool 3 and raised 4 adopts triangle or other shapes.
Embodiment seven:
As shown in figure 9, welding belt body 1 is identical with embodiment six, in shrinkage pool 3 and the corresponding non-solder face s2 of solder side s1 Projection 4 between process through hole 2;This through hole 2 can adopt triangle through hole.
Embodiment eight:
As shown in Figure 10, welding belt body 1 is identical with embodiment six, solder side s1 along welding belt body 1 length direction cloth Put 1~5 row's shrinkage pool 3, in non-solder face s2 processing projection 4 accordingly.Wherein, shrinkage pool 3 is generally circular in shape, raised 4 shape Also it is correspondingly circle.
Described raised 4 height is 0.04~0.1mm.
Embodiment nine:
As shown in figure 11, welding belt body 1 is identical with embodiment eight, in shrinkage pool 3 and the corresponding non-solder face of solder side s1 Through hole 2 is processed between the projection 4 of s2;This through hole 2 can adopt manhole.
Embodiment ten:
As shown in figure 12, welding belt body 1 is identical with embodiment six, wherein, shrinkage pool 3 be shaped as rectangle, raised 4 shape Shape is also correspondingly rectangle;Described raised 4 height is 0.04~0.1mm, and raised 4 length is 1~5mm, raised 4 width Spend for 0.05~0.15mm;Angle between described raised 4 sidepiece and non-solder face s2 is 110 °~130 °.
Embodiment 11:
As shown in figure 13, welding belt body 1 is identical with embodiment ten, in shrinkage pool 3 and the corresponding non-solder face of solder side s1 Through hole is processed between the projection 4 of s2;This through hole 2 can adopt rectangular through holes.
Above-mentioned welding belt body all using the tin plating welding being different from conventional photovoltaic assemblies, directly adopts at copper strips or surface Copper strips after reason, welding belt body does not need electroplating surfaces with tin.Described welding belt body adopts surface passivating treatment technique or in non-weldering Junction coating anti-rot material, prevents welding from aoxidizing, extends welding service life;Or in one layer of reflectorized material of non-solder plated surface.
The invention has the advantages that
On the one hand (1) welding of the present invention can substantially improve welding contact, reduces the generation of rosin joint and thermal stress Produce, the raising electric conductivity of another aspect welding, bring the raising of component power, reduce the integrated cost of material simultaneously;
(2) welding belt body of the present invention does not need electroplating surfaces with tin, substantially reduces the low cost of manufacture of welding and manufactures hardly possible Degree;
(3) welding belt body of the present invention does not need electroplating surfaces with tin, and compared with traditional tin plating welding, identical solder side is led Electric energy power strengthens;
(4) the solder side shrinkage pool structure of welding belt body of the present invention is greatly improved the contact surface of welding and tin cream, carries High smt welding performance, can substantially reduce rosin joint hidden danger compared with traditional welding welding procedure;
(5) present invention passes through the bond area that punching on welding belt body can greatly increase welding and weldering slurry, in through hole Or the column of formation solidification welds slurry in shrinkage pool, it is greatly improved weldering and starches and the mechanical connection welding and electrical connection, and through hole has The gas producing beneficial to the weldering slurry in welding solder side in welding procedure is discharged;
(6) sunlight being radiated on welding face can be reflected by the bulge-structure in welding belt body non-solder face of the present invention The power of assembly on battery, can be improved;The Passivation Treatment in non-solder face of welding belt body or coating reflectorized material, can increase The reflection of welding, so improve further cell piece by optical density, improve the output of assembly.

Claims (9)

1. a kind of photovoltaic solar cell assembly welding, is characterized in that: includes welding belt body (1), in the front of welding belt body (1) With the back side successively cycle arrangement solder side (s1) and non-solder face (s2), arrange some recessed solders side (s1) in solder side (s1) The cavity area on surface;
Described welding belt body (1) solder side (s1) along welding belt body (1) length direction process multiple rows of recessed solder side (s1) shrinkage pool (3) on surface, processes corresponding with the shrinkage pool (3) of solder side (s1) in the non-solder face (s2) of welding belt body (1) Raised (4).
2. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: described solder side (s1) and non-solder Face (s2) is plane, arranges the through hole (2) of connection solder side (s1) and non-solder face (s2) in welding belt body (1).
3. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: the welding of described welding belt body (1) Face (s1) and non-solder face (s2) are serrated face.
4. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: in the shrinkage pool of described solder side (s1) (3) processing through hole (2) between the projection (4) of corresponding non-solder face (s2).
5. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: in described shrinkage pool (3) and adjacent row The adjacent line at shrinkage pool (3) center has angle with the width of welding belt body (1).
6. photovoltaic solar cell assembly welding as claimed in claim 3, is characterized in that: in the width of described welding belt body (1) The sawtooth number of degree direction serrated face is 5~12, and serration depth is 0.1~0.3mm, serrated surface and welding belt body (1) surface Between included angle 1=140 °~170 °, 2=110 ° of sawtooth angle φ~130 ° of welding belt body (1) front and back.
7. photovoltaic solar cell assembly welding as claimed in claim 3, is characterized in that: the serration depth of described serrated face is 0.04~0.1mm, sawtooth angle φ=110 °~140 ° of welding belt body (1) front and back.
8. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: the depth of described shrinkage pool (3) is 0.04~0.24mm, the height of raised (4) is 0.04~0.1mm;The sidepiece of described projection (4) and the non-weldering of welding belt body (1) Angle between junction (s2) is 110 °~130 °.
9. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: described shrinkage pool (3) and raised (4) are adopted With triangle, circular or rectangle.
CN201510574718.6A 2015-09-11 2015-09-11 Photovoltaic solar cell assembly welding band Expired - Fee Related CN105185857B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493282A (en) * 2018-06-15 2018-09-04 浙江晶科能源有限公司 A kind of segmentation optically focused welding applied to photovoltaic module
CN108717952A (en) * 2018-08-15 2018-10-30 浙江晶科能源有限公司 A kind of optically focused welding

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WO2008139994A1 (en) * 2007-05-09 2008-11-20 Hitachi Chemical Company, Ltd. Conductor connection member, connection structure, and solar cell module
CN202004027U (en) * 2011-04-30 2011-10-05 常州天合光能有限公司 Solar battery module and welding tool for welding solder strip of module
CN102569470A (en) * 2012-02-28 2012-07-11 常州天合光能有限公司 Solder strip of solar module
CN203071086U (en) * 2013-01-11 2013-07-17 阿特斯(中国)投资有限公司 Solar battery assembly
CN203386785U (en) * 2013-07-31 2014-01-08 凡登(常州)新型金属材料技术有限公司 Photovoltaic solder strip
CN204375774U (en) * 2014-12-26 2015-06-03 江阴爱康光伏焊带有限公司 The efficient welding of photovoltaic module transfer matic low resistance
CN204441304U (en) * 2015-02-10 2015-07-01 秦皇岛市昌联光伏电子有限公司 A kind of hot dip reflective solder strip
CN204966519U (en) * 2015-09-11 2016-01-13 刘畅 Photovoltaic solar cell subassembly welds area

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1812135A (en) * 2005-01-24 2006-08-02 外山机械股份有限公司 Lead structure
WO2008139994A1 (en) * 2007-05-09 2008-11-20 Hitachi Chemical Company, Ltd. Conductor connection member, connection structure, and solar cell module
CN202004027U (en) * 2011-04-30 2011-10-05 常州天合光能有限公司 Solar battery module and welding tool for welding solder strip of module
CN102569470A (en) * 2012-02-28 2012-07-11 常州天合光能有限公司 Solder strip of solar module
CN203071086U (en) * 2013-01-11 2013-07-17 阿特斯(中国)投资有限公司 Solar battery assembly
CN203386785U (en) * 2013-07-31 2014-01-08 凡登(常州)新型金属材料技术有限公司 Photovoltaic solder strip
CN204375774U (en) * 2014-12-26 2015-06-03 江阴爱康光伏焊带有限公司 The efficient welding of photovoltaic module transfer matic low resistance
CN204441304U (en) * 2015-02-10 2015-07-01 秦皇岛市昌联光伏电子有限公司 A kind of hot dip reflective solder strip
CN204966519U (en) * 2015-09-11 2016-01-13 刘畅 Photovoltaic solar cell subassembly welds area

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