CN203812888U - Solar cell electrode bringing convenience to welding of solder strip - Google Patents
Solar cell electrode bringing convenience to welding of solder strip Download PDFInfo
- Publication number
- CN203812888U CN203812888U CN201320660820.4U CN201320660820U CN203812888U CN 203812888 U CN203812888 U CN 203812888U CN 201320660820 U CN201320660820 U CN 201320660820U CN 203812888 U CN203812888 U CN 203812888U
- Authority
- CN
- China
- Prior art keywords
- welding
- electrode
- solar cell
- solder strip
- weld layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003466 welding Methods 0.000 title claims abstract description 56
- 229910000679 solder Inorganic materials 0.000 title abstract 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001128 Sn alloy Inorganic materials 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- 229910052709 silver Inorganic materials 0.000 claims description 10
- 239000004332 silver Substances 0.000 claims description 10
- 229910001316 Ag alloy Inorganic materials 0.000 claims description 7
- 229910001074 Lay pewter Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 235000008216 herbs Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a solar cell electrode bringing convenience to the welding of a solder strip, and the electrode comprises at least one conductive metal transit layer. The outer side surface of the outermost conductive metal transit layer is provided with a welding layer, wherein the welding layer is made of tin or tin alloy materials. The electrode provided by the utility model can improve the welding stability of the electrode with the solder strip, and enlarges the scope of materials employed by the solder strip, thereby bringing convenience to welding and reducing the cost.
Description
Technical field
The utility model relates to a kind of electrode of solar battery that facilitates welding welding, belongs to technical field of solar batteries.
Background technology
At present, in solar cell processing procedure, when forming electrode, normally utilize the mode of screen printing that electrode material is printed to substrate, as shown in Figure 1, 2, in addition, when solar cell module is carried out to encapsulation procedure, conventionally can connect by welding the electrode of a plurality of solar cells, these solar cells are connected in series or in parallel, form the solar modules that meets voltage, current requirements, its electrode material adopting is generally the alloy of silver or silver-colored aluminium, and welding material base material is copper, surface-coated lead alloy or other ashbury metals; Afterwards by traditional welding procedure, for example hot air welding, infrared welding, contact type welding or laser welding form alloy by the ashbury metal on the silver electrode of battery and welding surface and link together, but, obtain if more power, when the material on welding surface is replaced by silver or silver alloy, cannot weld because eutectic point is too high with the silver of battery surface, if adopt conductive tape or conducting resinl to connect, the difficulty and the cost that greatly increase welding also can significantly be improved.
Summary of the invention
Technical problem to be solved in the utility model is the defect that overcomes prior art, a kind of electrode of solar battery that facilitates welding welding is provided, and it can improve the welding stability of electrode and welding, expands the scope that welding is used material, thereby convenient welding, reduces costs.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: a kind of electrode of solar battery that facilitates welding welding, comprise at least one deck conducting metal transition zone, on the lateral surface of outermost conducting metal transition zone, be provided with weld layer, and weld layer is made by tin or tin alloy material.
Further, described conducting metal transition zone is made by silver or silver alloy.
Further, the thickness of described weld layer is 3 microns ~ 50 microns.
Further, the thickness of described weld layer is 15 microns.
Further, described weld layer is made by leypewter material.
Adopted after technique scheme, because the surface of this electrode is coated with the weld layer of being made by tin or ashbury metal, the weld layer that this material is made can form alloy with a lot of materials and link together, this has just expanded the scope of welding use material, the coating material of welding just has more selection, can be leypewter, ashbury metal, silver or silver alloy etc., also improve the welding stability of electrode and welding simultaneously, avoided original welding coating material to use the relatively phenomenon of limitation, facilitate welding, reduced cost.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of the solar cell of prior art;
Fig. 2 is the structure schematic diagram of the solar cell of prior art;
Fig. 3 is the structural representation of the solar cell of prior art;
Fig. 4 is for being used the structural representation of the solar cell of the electrode of solar battery that facilitates welding welding of the present utility model;
Wherein, 1 is solar silicon wafers; 2 is the conducting metal transition zone at front or the back side; 4 is aluminium back surface field; 5 is weld layer.
Embodiment
For content of the present utility model is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below,
As shown in Figure 4, a kind of electrode of solar battery that facilitates welding welding, comprises at least one deck conducting metal transition zone 2, be provided with weld layer 5, and weld layer 5 is made on the lateral surface of outermost conducting metal transition zone 2 by tin or tin alloy material.
Conducting metal transition zone 2 is made by silver or silver alloy, can be one deck, which floor can be also, but be all not limited to this.
The thickness of weld layer 5 is 3 microns ~ 50 microns, can select 15 microns.
Weld layer 5 can be made by leypewter material, but is not limited to this.
Operation principle of the present utility model is as follows:
Because the surface of this electrode is coated with the weld layer 5 of being made by tin or ashbury metal, the weld layer 5 that this material is made can form alloy with a lot of materials and link together, this has just expanded the scope of welding use material, the coating material of welding just has more selection, can be leypewter, ashbury metal, silver or silver alloy etc., also improved the welding stability of electrode and welding simultaneously, avoided original welding coating material to use the relatively phenomenon of limitation, facilitate welding, reduced cost.
The manufacturing process of a kind of solar cell of use the utility model electrode is as follows:
Solar silicon wafers 1 is according to normal technological process making herbs into wool, clean, diffusion, rear cleaning, printing-sintering, be made into cell piece, adopt the technique of high speed electrodeposition above to electroplate a layer thickness at the leypewter of 15 microns of left and right at the silver (namely conducting metal transition zone 2) of the main grid line of cell piece positive and negative, form weld layer 5, for improving the power of assembly, welding adopts micro-optically focused welding of electroplate, use normal hot air welding, the silver on welding surface and the leypewter of cell piece are under the high temperature of 270 ℃, the ohm that forms tin argentalium alloy connects, solar battery sheet is together in series, pass through afterwards lamination, lamination, dress aluminium frame, the operations such as dress terminal box complete the making of whole assembly, so the silver-plated welding that cannot weld in conventional batteries is coupled together, structure reflection by welding table has increased the utilance of light, thereby carried still the power of whole assembly.
Above-described specific embodiment; the technical problem of solution of the present utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (3)
1. an electrode of solar battery that facilitates welding welding, comprise at least one deck conducting metal transition zone (2), it is characterized in that: on the lateral surface of outermost conducting metal transition zone (2), be provided with weld layer (5), and weld layer (5) is made by tin or tin alloy material, the thickness of described weld layer (5) is 3 microns ~ 15 microns.
2. the electrode of solar battery that facilitates welding welding according to claim 1, is characterized in that: described conducting metal transition zone (2) is made by silver or silver alloy.
3. the electrode of solar battery that facilitates welding welding according to claim 1, is characterized in that: described weld layer (5) is made by leypewter material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660820.4U CN203812888U (en) | 2013-10-25 | 2013-10-25 | Solar cell electrode bringing convenience to welding of solder strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320660820.4U CN203812888U (en) | 2013-10-25 | 2013-10-25 | Solar cell electrode bringing convenience to welding of solder strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203812888U true CN203812888U (en) | 2014-09-03 |
Family
ID=51451607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320660820.4U Expired - Lifetime CN203812888U (en) | 2013-10-25 | 2013-10-25 | Solar cell electrode bringing convenience to welding of solder strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203812888U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514187A (en) * | 2016-01-13 | 2016-04-20 | 无锡尚德太阳能电力有限公司 | Solar battery structure and manufacturing method thereof |
| CN107919402A (en) * | 2017-12-21 | 2018-04-17 | 润峰电力有限公司 | A kind of crystal silicon solar batteries front electrode main grid structure and its printing process |
-
2013
- 2013-10-25 CN CN201320660820.4U patent/CN203812888U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514187A (en) * | 2016-01-13 | 2016-04-20 | 无锡尚德太阳能电力有限公司 | Solar battery structure and manufacturing method thereof |
| CN107919402A (en) * | 2017-12-21 | 2018-04-17 | 润峰电力有限公司 | A kind of crystal silicon solar batteries front electrode main grid structure and its printing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: TRINA SOLAR Co.,Ltd. Address before: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee before: trina solar Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: Solar photovoltaic industry park Tianhe Road 213031 north of Jiangsu Province, Changzhou City, No. 2 Patentee after: trina solar Ltd. Address before: Tianhe Electronic Industrial Park Road 213022 north of Jiangsu Province, Changzhou City, No. 2 Patentee before: CHANGZHOU TRINA SOLAR ENERGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |