CN105185857A - Photovoltaic solar cell assembly welding band - Google Patents

Photovoltaic solar cell assembly welding band Download PDF

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Publication number
CN105185857A
CN105185857A CN201510574718.6A CN201510574718A CN105185857A CN 105185857 A CN105185857 A CN 105185857A CN 201510574718 A CN201510574718 A CN 201510574718A CN 105185857 A CN105185857 A CN 105185857A
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China
Prior art keywords
welding
belt body
solar cell
cell assembly
face
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CN201510574718.6A
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Chinese (zh)
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CN105185857B (en
Inventor
刘畅
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Liu Chang International Co Ltd
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/05Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H01L31/0508Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module the interconnection means having a particular shape
    • 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 welding of photovoltaic solar crystal silicon cell assembly SMT welding procedure.
Background technology
Solar cell welding is also known as tin-coated copper strip or be coated with tin copper strips, for the connection of photovoltaic module cell piece.Welding is the important raw and processed materials in welding photovoltaic component process, and the quality of welding quality will directly have influence on the collection efficiency of photovoltaic module electric current, very large to the power influences of photovoltaic module.Welding must accomplish firm welding in the process of series cells, avoids the generation of rosin joint dry joint phenomenon.There is following defect in existing welding: (1) welding surface needs zinc-plated, adds manufacturing cost and the manufacture difficulty of welding; (2) due to welding electroplating surfaces with tin, thus the conductive capability of solder side is reduced; (3) in existing crystalline silicon battery plate welding procedure, use traditional electric iron or string welder tin-coated copper strip, easily occur the phenomenon of rosin joint.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of photovoltaic solar cell assembly welding, this welding coordinates the special SMT tin cream of photovoltaic can ensure welding firm welding, can avoid rosin joint phenomenon.
According to technical scheme provided by the invention, described photovoltaic solar cell assembly welding, it is characterized in that: comprise welding belt body, in front and back cycle arrangement solder side and the non-solder face successively of welding belt body, arrange the cavity area on some recessed solder side surfaces at solder side.
In an embodiment, described solder side and non-solder face are plane, arrange the through hole being communicated with solder side and non-solder face at welding belt body.
In an embodiment, the solder side of described welding belt body and non-solder face are serrated face.
In an embodiment, process the shrinkage pool arranging recessed solder side surface along the length direction of welding belt body, in the projection that the processing of the non-solder face of welding belt body is corresponding with the shrinkage pool of solder side at the solder side of described welding belt body more.
In an embodiment, process through hole at the shrinkage pool of described solder side with between the projection in corresponding non-solder face.
In an embodiment, in described shrinkage pool and adjacent row, the adjacent line at shrinkage pool center and the Width of welding belt body have angle.
In an embodiment, it is 5 ~ 12 at the sawtooth number of the Width serrated face of described welding belt body, serration depth is 0.1 ~ 0.3mm, angle Φ between serrated surface and welding band surface 1=140 ° ~ 170 °, the sawtooth angle Φ of welding belt body front and back 2=110 ° ~ 130 °.
In an embodiment, the serration depth 0.04 ~ 0.1mm of described serrated face, sawtooth angle Φ=110 of welding belt body front and back ° ~ 140 °.
In an embodiment, the degree of depth of described shrinkage pool is 0.04 ~ 0.24mm, and protruding height is 0.04 ~ 0.1mm; Angle between the sidepiece of described projection and the non-solder face of welding belt body is 110 ° ~ 130 °.
In an embodiment, described shrinkage pool and protruding employing triangle, circle or rectangle.
Welding of the present invention can improve welding contact greatly, reduces the generation of rosin joint and the generation of thermal stress on the one hand, and the raising conductivity of welding, brings the raising of component power, reduce the integrated cost of material simultaneously on the other hand.
Accompanying drawing explanation
Fig. 1-1 is the structural representation of a kind of execution mode of welding in embodiment one.
Fig. 1-2 is the structural representation of the another kind of execution mode of welding 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 embodiment four.
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 of welding described in enforcement 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.
Embodiment
Below in conjunction with concrete accompanying drawing, the invention will be further described.
Embodiment one:
As Figure 1-1, described photovoltaic solar cell assembly welding comprises welding belt body 1, and the front and back of welding belt body 1 is plane.
As shown in Figure 1-2, described welding belt body 1 can also adopt the mode of roll extrusion or punching press process the through hole 2 of various sizes and 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 Figure 2, described photovoltaic solar cell assembly welding comprises welding belt body 1, and the front and back of welding belt body 1 is shape, measure-alike serrated face; It is 5 ~ 12 at the sawtooth number of the Width serrated face of described welding belt body 1, serration depth is 0.1 ~ 0.3mm, angle Φ between serrated surface and welding belt body 1 surface 1=140 ° ~ 170 °, the sawtooth angle Φ of welding belt body 1 front and back 2=110 ° ~ 130 °.
Embodiment three:
As shown in Figure 3, welding belt body 1 described in embodiment two is processed the through hole 2 of various sizes and shape.
Embodiment four:
As shown in Figure 4, described photovoltaic solar cell assembly welding comprises welding belt body 1, and the front and back of welding belt body 1 is shape, measure-alike serrated face; Be 5 ~ 12 at the sawtooth number of the Width serrated face of described welding belt body 1, serration depth is 0.04 ~ 0.1mm, sawtooth angle Φ=110 of welding belt body 1 front and back ° ~ 140 °.
Embodiment five:
As shown in Figure 5, welding belt body 1 described in embodiment four is processed the through hole 2 of various sizes and shape.
Embodiment six:
As shown in Figure 6 to 8, described photovoltaic solar cell assembly welding comprises welding belt body 1, according to the size of required connection cell piece, at the front and back cycle arrangement solder side S1 and non-solder face S2 successively of welding belt body 1, in welding procedure, the solder side of welding belt body 1 and welding of battery film; Concrete welding belt body 1 front is the region of solder side S1 as shown in Figure 8, and 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, as 156mm, 125mm, 78mm, 52mm, 39mm according to the size of required connection cell piece;
Process the shrinkage pool 3 arranging recessed solder side surface at the solder side S1 of described welding belt body 1 along the length direction of welding belt body 1 more, process the projection 4 corresponding with the shrinkage pool 3 of solder side S1 at the non-solder face S2 of welding belt body 1; The degree of depth of described shrinkage pool 3 is 0.04 ~ 0.24mm; Angle between the non-solder face S2 of the described sidepiece of protruding 4 and welding belt body 1 is 110 ° ~ 130 °.
As shown in Figure 6, Figure 7, in described shrinkage pool 3 and adjacent row, the adjacent line at shrinkage pool 3 center and the Width of welding belt body 1 have angle.
Described shrinkage pool 3 and protruding 4 adopts triangle or other shapes.
Embodiment seven:
As shown in Figure 9, welding belt body 1 is identical with embodiment six, processes through hole 2 at the shrinkage pool 3 of solder side S1 with between the projection 4 of corresponding non-solder face S2; 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, arranges 1 ~ 5 row's shrinkage pool 3, process corresponding protruding 4 at non-solder face S2 at solder side S1 along the length direction of welding belt body 1.Wherein, the shape of shrinkage pool 3 is circular, and the shape of protruding 4 is also correspondingly circular.
The described height of protruding 4 is 0.04 ~ 0.1mm.
Embodiment nine:
As shown in figure 11, welding belt body 1 is identical with embodiment eight, processes through hole 2 at the shrinkage pool 3 of solder side S1 with between the projection 4 of corresponding non-solder face S2; This through hole 2 can adopt manhole.
Embodiment ten:
As shown in figure 12, welding belt body 1 is identical with embodiment six, and wherein, the shape of shrinkage pool 3 is rectangle, and the shape of protruding 4 is also correspondingly rectangle; The described height of protruding 4 is 0.04 ~ 0.1mm, and the length of protruding 4 is 1 ~ 5mm, and the width of protruding 4 is 0.05 ~ 0.15mm; Angle between the described sidepiece of protruding 4 and non-solder face S2 is 110 ° ~ 130 °.
Embodiment 11:
As shown in figure 13, welding belt body 1 is identical with embodiment ten, processes through hole at the shrinkage pool 3 of solder side S1 with between the projection 4 of corresponding non-solder face S2; This through hole 2 can adopt rectangular through holes.
Above-mentioned welding belt body all adopts the zinc-plated welding being different from conventional photovoltaic assemblies, and directly adopt the copper strips after copper strips or surface treatment, welding belt body does not need electroplating surfaces with tin.Described welding belt body adopts surface passivating treatment technique or at non-solder face coating anti-rot material, prevents welding be oxidized, prolongation welding useful life; Or at non-solder plated surface one deck reflectorized material.
The present invention has the following advantages:
(1) welding of the present invention can improve welding contact greatly, reduces the generation of rosin joint and the generation of thermal stress on the one hand, and the raising conductivity of welding, brings the raising of component power, reduce the integrated cost of material simultaneously on the other hand;
(2) welding belt body of the present invention does not need electroplating surfaces with tin, greatly reduces low cost of manufacture and the manufacture difficulty of welding;
(3) welding belt body of the present invention does not need electroplating surfaces with tin, and compared with the zinc-plated welding of tradition, identical solder side conductive capability strengthens;
(4) the solder side shrinkage pool structure of welding belt body of the present invention can improve the contact-making surface of welding and tin cream greatly, improves SMT welding performance, can greatly reduce rosin joint hidden danger compared with traditional welding welding procedure;
(5) the present invention greatly can increase welding by punching on welding belt body and weld the bond area starched, the column weldering slurry of solidification is formed in through hole or shrinkage pool, greatly can improve weldering slurry and the mechanical connection welded and electrical connection, and through hole is conducive to the gas discharge that the weldering slurry in welding procedure in welding solder side produces;
(6) sunlight be radiated on welding face can reflex on battery by the bulge-structure in welding belt body non-solder face of the present invention, can improve the power of assembly; The Passivation Treatment in the 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 power output of assembly.

Claims (10)

1. a photovoltaic solar cell assembly welding, it is characterized in that: comprise welding belt body (1), at front and back cycle arrangement solder side (S1) and non-solder face (S2) successively of welding belt body (1), arrange the cavity area on some recessed solders side (S1) surface at solder side (S1).
2. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: described solder side (S1) and non-solder face (S2) are plane, arranges the through hole (2) being communicated with solder side (S1) and non-solder face (S2) at welding belt body (1).
3. photovoltaic solar cell assembly welding as claimed in claim 1, is characterized in that: solder side (S1) and non-solder face (S2) of described welding belt body (1) are serrated face.
4. photovoltaic solar cell assembly welding as claimed in claim 1, it is characterized in that: arrange the surperficial shrinkage pool (3) of recessed solder side (S1) along the length direction processing of welding belt body (1), in the projection (4) that the processing of the non-solder face (S2) of welding belt body (1) is corresponding with the shrinkage pool (3) of solder side (S1) at the solder side (S1) of described welding belt body (1) more.
5. photovoltaic solar cell assembly welding as claimed in claim 4, is characterized in that: process through hole (2) at the shrinkage pool (3) of described solder side (S1) with between the projection (4) in corresponding non-solder face (S2).
6. photovoltaic solar cell assembly welding as claimed in claim 4, is characterized in that: in described shrinkage pool (3) and adjacent row, the adjacent line at shrinkage pool (3) center and the Width of welding belt body (1) have angle.
7. photovoltaic solar cell assembly welding as claimed in claim 3, it is characterized in that: be 5 ~ 12 at the sawtooth number of the Width serrated face of described welding belt body (1), serration depth is 0.1 ~ 0.3m, angle Φ between serrated surface and welding belt body (1) surface 1=140 ° ~ 170 °, the sawtooth angle Φ of welding belt body (1) front and back 2=110 ° ~ 130 °.
8. 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 of welding belt body (1) front and back ° ~ 140 °.
9. photovoltaic solar cell assembly welding as claimed in claim 4, is characterized in that: the degree of depth of described shrinkage pool (3) is 0.04 ~ 0.24mm, and the height of protruding (4) is 0.04 ~ 0.1mm; Angle between the sidepiece of described projection (4) and the non-solder face (S2) of welding belt body (1) is 110 ° ~ 130 °.
10. photovoltaic solar cell assembly welding as claimed in claim 4, is characterized in that: described shrinkage pool (3) and protruding (4) adopt triangle, circle 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 (2)

* 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
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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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* 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
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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

Cited By (2)

* 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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