CN201435392Y - solar cell interconnection bar - Google Patents
solar cell interconnection bar Download PDFInfo
- Publication number
- CN201435392Y CN201435392Y CN200920156681.5U CN200920156681U CN201435392Y CN 201435392 Y CN201435392 Y CN 201435392Y CN 200920156681 U CN200920156681 U CN 200920156681U CN 201435392 Y CN201435392 Y CN 201435392Y
- Authority
- CN
- China
- Prior art keywords
- interconnector
- holes
- solar cell
- welding
- utility
- 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
- 230000001154 acute effect Effects 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 abstract description 11
- 238000005452 bending Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910000679 solder Inorganic materials 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Images
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Photovoltaic Devices (AREA)
Abstract
本实用新型公开了一种太阳电池互连条，所述互连条上开有多个通孔。所述通孔可以为对称形状，如圆形、菱形或正六边形。所述多个通孔成排均匀排列在所述互连条上。所述成排排列的多个通孔的中心点的连线与所述互连条的边之间成一锐角。本实用新型的有益效果在于：焊接时热量可以更好地传导到焊接处；焊接后利用开孔范围对变形应力进行释放，从而可以减小电池片在焊接互连条后的弯曲。
The utility model discloses a solar battery interconnection strip, and a plurality of through holes are opened on the interconnection strip. The through hole may be in a symmetrical shape, such as a circle, a rhombus or a regular hexagon. The plurality of through holes are uniformly arranged in rows on the interconnection bars. An acute angle is formed between a line connecting central points of the plurality of through holes arranged in a row and a side of the interconnection bar. The beneficial effects of the utility model are: heat can be better conducted to the welding place during welding; deformation stress can be released by using the opening range after welding, thereby reducing the bending of the battery sheet after welding the interconnection strip.
Description
Technical field
The utility model relates to solar module and makes field, particularly a kind of solar cell interconnector.
Background technology
In the manufacture process of solar module, need to adopt the solar cell interconnector that a plurality of battery sheets are connected and/or are together in parallel, thereby form some battery strings.Interconnector generally is zinc-plated copper strips, is welded in respectively on the main grid line of adjacent cell sheet positive and negative electrode.Solar cell piece is easy to generate bending after manual welding, regular meeting's injury extra to battery strings because of this reason causes in stacked lamination operation.
The battery sheet is that too big (for example, the thermal coefficient of expansion of interconnector is about 16.5 for interconnector and silicon chip thermal expansion coefficient difference in main cause crooked behind the solder interconnections bar; The thermal coefficient of expansion of silicon chip is about 2.6).Because thermal coefficient of expansion is: α=Δ V/ (V* Δ T), Δ V is the change of the object volume under the variations in temperature Δ T of giving in the formula, V is an object volume.Absorb same heat at battery sheet weld interconnector and silicon chip, but expansion and contraction separately will differ about 6 times of volumes, so cause bending easily.In order to reduce the flexibility of battery sheet behind the solder interconnections bar, except reducing welding temperature, can also realize this effect by existing interconnector is retrofited.Fig. 1 shows in the prior art improvement to the interconnector structure.As shown in the figure, interconnector 1 ' is carried out fold handle and reduce it on non-pad, but, adopt this structure to have a negative impact the welding pulling force because interconnector 1 ' self is in uneven thickness because of the flexible bending stress that produces of being heated.
The utility model content
The purpose of the utility model embodiment is, a kind of solar cell interconnector is provided, and it can reduce the bending of battery sheet behind the solder interconnections bar.
For solving the problems of the technologies described above, embodiment of the present utility model provides a kind of solar cell interconnector, has a plurality of through holes on the described interconnector.
As preferably, described through hole can be symmetric shape.
As further preferred, described through hole can be circle, rhombus or regular hexagon.
As preferably, described a plurality of through holes in a row are evenly arranged on the described interconnector.
As further preferred, in an acute angle between the line of the central point of a plurality of through holes of described arrangement in a row and the limit of described interconnector.
As preferably, the gross area of described a plurality of through holes is 3: 8 with the ratio of the gross area of described interconnector.
The utility model embodiment has following beneficial effect at least: reduced the heat of interconnector overall absorption, heat can be transmitted to weld better during welding; Utilize the perforate scope that distortional stress is discharged after the welding, thereby can reduce the bending of battery sheet behind the solder interconnections bar.
Description of drawings
Fig. 1 is the schematic perspective view of the solar cell interconnector of prior art;
Fig. 2 to Fig. 6 is the front schematic view of the solar cell interconnector of the utility model embodiment.
Main description of reference numerals
1 interconnector, 2 through holes
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
The utility model improves to reduce the bending of battery sheet behind the solder interconnections bar the structure of interconnector.Fig. 2 to Fig. 6 is the front schematic view of the solar cell interconnector of the utility model embodiment.As shown in the figure, have a plurality of through holes 2 on the interconnector 1.Through hole 2 can be various symmetric shapes such as circle, rhombus, hexagon, and the shape of through hole 2 also can be asymmetrical shape certainly.A plurality of through holes 2 in a row are evenly arranged on the interconnector 1.In a row can be in an acute angle between the limit of the line of the central point of a plurality of through holes 2 of arranging and interconnector 1.As shown in Figure 6, the angle α that forms between the long limit of the line of the central point of a plurality of through holes 2 and interconnector 1 is 30 °.The gross area of a plurality of through holes 2 can be 1: 3 to 2: 3, preferably 3: 8 with the ratio of the gross area of interconnector 1.
According to the utility model, by punching on interconnector 1, on the one hand, reduced the heat of interconnector 1 overall absorption, heat can be transmitted to weld better during welding; On the other hand, utilize the perforate scope that distortional stress is discharged (contraction of through hole after for the interconnector expanded by heating leaves the space) after the welding, thereby can reach the purpose that reduces the bending of battery sheet behind the solder interconnections bar.
The above only is a part preferred embodiment of the present utility model, and all equivalent arrangements of being done according to the utility model claim change, all in protection range of the present utility model.
Claims (7)
1, a kind of solar cell interconnector is characterized in that, has a plurality of through holes on the described interconnector.
2, solar cell interconnector according to claim 1 is characterized in that, described through hole is a symmetric shape.
3, solar cell interconnector according to claim 2 is characterized in that, described through hole is circle, rhombus or regular hexagon.
4, solar cell interconnector according to claim 1 is characterized in that, described a plurality of through holes in a row are evenly arranged on the described interconnector.
5, solar cell interconnector according to claim 4 is characterized in that, and is in an acute angle between the line of the central point of a plurality of through holes of described arrangement in a row and the limit of described interconnector.
6, solar cell interconnector according to claim 1 is characterized in that, the gross area of described a plurality of through holes is 1: 3 to 2: 3 with the ratio of the gross area of described interconnector.
7, solar cell interconnector according to claim 6 is characterized in that, the gross area of described a plurality of through holes is 3: 8 with the ratio of the gross area of described interconnector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920156681.5U CN201435392Y (en) | 2009-06-17 | 2009-06-17 | solar cell interconnection bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920156681.5U CN201435392Y (en) | 2009-06-17 | 2009-06-17 | solar cell interconnection bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201435392Y true CN201435392Y (en) | 2010-03-31 |
Family
ID=42054207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920156681.5U Expired - Lifetime CN201435392Y (en) | 2009-06-17 | 2009-06-17 | solar cell interconnection bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201435392Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201471A (en) * | 2011-04-20 | 2011-09-28 | 昆明三利特科技有限责任公司 | Photovoltaic interconnector for absorbing stress |
| WO2011160294A1 (en) * | 2010-06-23 | 2011-12-29 | 常州天合光能有限公司 | Tin-coated copper strip for reducing crack |
| CN102324442A (en) * | 2011-07-12 | 2012-01-18 | 友达光电股份有限公司 | Back electrode solar cell module and electrode welding method thereof |
| CN103426960A (en) * | 2013-03-21 | 2013-12-04 | 连云港神舟新能源有限公司 | Inter-digital back contact (IBC) battery piece conductive solder strip and method for connecting battery pieces by using same |
| CN108550556A (en) * | 2018-05-31 | 2018-09-18 | 京东方科技集团股份有限公司 | Protective film and its display panel for flexible substrate |
| CN108847425A (en) * | 2015-10-08 | 2018-11-20 | Lg电子株式会社 | Solar cell module |
| CN110576258A (en) * | 2018-06-07 | 2019-12-17 | 罗伯特·博世有限公司 | Method for making a material-fitted laser-bonded connection and apparatus for implementing the method |
| CN113314637A (en) * | 2021-05-28 | 2021-08-27 | 宁夏小牛自动化设备有限公司 | Preparation method of single-side welded dense-grid solar cell string |
-
2009
- 2009-06-17 CN CN200920156681.5U patent/CN201435392Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011160294A1 (en) * | 2010-06-23 | 2011-12-29 | 常州天合光能有限公司 | Tin-coated copper strip for reducing crack |
| CN102201471B (en) * | 2011-04-20 | 2012-11-28 | 昆明三利特科技有限责任公司 | Photovoltaic interconnector for absorbing stress |
| CN102201471A (en) * | 2011-04-20 | 2011-09-28 | 昆明三利特科技有限责任公司 | Photovoltaic interconnector for absorbing stress |
| CN102324442A (en) * | 2011-07-12 | 2012-01-18 | 友达光电股份有限公司 | Back electrode solar cell module and electrode welding method thereof |
| CN102324442B (en) * | 2011-07-12 | 2014-04-23 | 友达光电股份有限公司 | Back electrode solar cell module and electrode welding method thereof |
| CN103426960A (en) * | 2013-03-21 | 2013-12-04 | 连云港神舟新能源有限公司 | Inter-digital back contact (IBC) battery piece conductive solder strip and method for connecting battery pieces by using same |
| US11114576B2 (en) | 2015-10-08 | 2021-09-07 | Lg Electronics Inc. | Solar cell module |
| CN108847425A (en) * | 2015-10-08 | 2018-11-20 | Lg电子株式会社 | Solar cell module |
| CN108550556A (en) * | 2018-05-31 | 2018-09-18 | 京东方科技集团股份有限公司 | Protective film and its display panel for flexible substrate |
| US11826997B2 (en) | 2018-05-31 | 2023-11-28 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Flexible display panel |
| CN110576258A (en) * | 2018-06-07 | 2019-12-17 | 罗伯特·博世有限公司 | Method for making a material-fitted laser-bonded connection and apparatus for implementing the method |
| CN110576258B (en) * | 2018-06-07 | 2023-12-12 | 罗伯特·博世有限公司 | Method for manufacturing material-matched laser bonding connections and equipment for implementing the method |
| CN113314637A (en) * | 2021-05-28 | 2021-08-27 | 宁夏小牛自动化设备有限公司 | Preparation method of single-side welded dense-grid solar cell string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: WUXI DEXIN SOLAR POWER CO., LTD. Assignor: Wuxi Shangde Solar Electric Power Co., Ltd. Contract record no.: 2013990000143 Denomination of utility model: Solar cell interconnector Granted publication date: 20100331 License type: Exclusive License Record date: 20130409 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100331 |