CN103618011A - Non-main-grid double-faced battery pack connected with conductive adhesives - Google Patents
Non-main-grid double-faced battery pack connected with conductive adhesives Download PDFInfo
- Publication number
- CN103618011A CN103618011A CN201310581967.9A CN201310581967A CN103618011A CN 103618011 A CN103618011 A CN 103618011A CN 201310581967 A CN201310581967 A CN 201310581967A CN 103618011 A CN103618011 A CN 103618011A
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- Prior art keywords
- double
- conductive tape
- grid
- main
- faced
- Prior art date
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- Pending
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- 239000000853 adhesive Substances 0.000 title abstract description 4
- 230000001070 adhesive effect Effects 0.000 title abstract description 4
- 238000003466 welding Methods 0.000 claims abstract description 18
- 238000003854 Surface Print Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- 229910052709 silver Inorganic materials 0.000 abstract description 3
- 239000004332 silver Substances 0.000 abstract description 3
- 238000005245 sintering Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000007769 metal material Substances 0.000 abstract description 2
- 229910000679 solder Inorganic materials 0.000 abstract 3
- 238000005336 cracking Methods 0.000 abstract 2
- 238000003475 lamination Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared 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
- H01L31/02—Details
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Hybrid Cells (AREA)
Abstract
The invention discloses a non-main-grid double-faced battery pack connected with conductive adhesives. The non-main-grid double-faced battery pack comprises at least two double-faced battery pieces, a plurality of solder strips and a plurality of conductive tape. Only thin grid lines are printed on the surfaces of the double-faced battery pieces, and the positive face of the conductive tape adheres to the position of a main grid line. The solder strips adhere to the back face of the conductive tape, and the two double-faced battery pieces are connected through the solder strips. A metal main grid is replaced by the conductive tape to collect currents, the use amount of silver paste is saved, cost is saved, the conductive tape is connected to the double-faced battery pieces at a low temperature, and therefore the problems that due to the fact that defects, caused by sintering and welding, will be generated at the contact position between the non-main-grid double-faced battery pack and a silicon wafer, and consequently electrons and hole pairs below the grid lines are severely compounded and the conversion efficiency of the battery pieces is reduced are solved. In addition, due to the fact that metal materials are not utilized, the problem of hidden cracking and cracking of the battery pieces due to different coefficients of thermal expansion under different environments is solved.
Description
Technical field
The present invention relates to a kind of Double-sided battery pack, particularly a kind of conducting resinl connect without main grid Double-sided battery pack.
Background technology
At present, the conversion efficiency of photovoltaic generation and manufacturing cost are restricting the large-scale application of solar power generation.So development of new high efficiency, low cost, highly reliable solar module, become photovoltaic industry problem demanding prompt solution.
Photovoltaic industry high speed development in recent years, has also brought challenge when bringing opportunity.Through professional person's effort in many ways, develop novel double-side cell, double-side cell is made after assembly, and positive and negative is subject to can generate electricity after light, can increase by least 10% energy output.But because double-side cell manufacture craft is more complicated and tow sides printed silver slurry, cause cost to increase a lot of simultaneously.
In addition, for common one side and Double-sided battery pack, adopt the welding manner of 350 ℃ of high temperature between cell piece, with welding, to be connected, this kind of method causes cell piece crooked on the one hand because temperature is too high, thereby on cell piece, produce a lot of hidden splitting or sliver, increased the manufacturing cost of assembly; On the other hand, welding is different from the thermal coefficient of expansion at the bottom of silver and silicon wafer-based, in the outdoor application in later stage power station, due to the variation of high and low temperature environment, causes various materials to produce the integrity problems such as disconnected grid and sliver because different thermal coefficient of expansions makes cell piece.
Summary of the invention
Goal of the invention: the object of the invention is to solve prior art and adopt master metal grid line cost high, and easily cause the hidden problem that causes reducing cell piece conversion efficiency with sliver of splitting of battery in the process of high temperature sintering and welding.
Summary of the invention: the invention provides following technical scheme: a kind of conducting resinl connect without main grid Double-sided battery pack, comprise at least two double-side cell sheets, some weldings and some conductive tapes, described double-side cell sheet surface printing only prints thin grid line, conductive tape front is attached on the position of main grid line, welding is attached to the conductive tape back side, between two adjacent double-side cell sheets, by welding, connects.
As optimization, described two adjacent double-side cell sheets, the conductive tape in the first double-side cell sheet front is connected by welding with the conductive tape at the second double-side cell sheet back side.
As optimization, all double-side cell sheet strings well after, adopt busbar that both positive and negative polarity is drawn.
Beneficial effect: the present invention compared with prior art: the present invention adopts conductive tape alternative metals main grid collected current, and the use amount of having saved silver-colored slurry, has saved cost, is connected to double-side cell sheet under conductive tape low temperature,
Prevent from causing electronics below grid line and hole to compound serious because place that sintering contacts with silicon chip with welding can produce more defect, reduce the problem of cell piece conversion efficiency, and because not being adopts metal material, can there is not the hidden problem of splitting with sliver of thermal coefficient of expansion difference causes under varying environment cell piece.
Accompanying drawing explanation
Fig. 1 is the structural representation in double-side cell sheet of the present invention front;
Fig. 2 is the structural representation at the double-side cell sheet of the present invention back side;
Fig. 3 is schematic cross-section of the present invention.
Embodiment
As shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, a kind of conducting resinl connect without main grid Double-sided battery pack, comprise two double-side cell sheets 1, three weldings 3 and 12 conductive tapes 2, double-side cell sheet 1 front and back is printed with respectively three main grid signs 4, but do not print main grid, position in main grid sign attaches conductive tape 2, between two adjacent double-side cell sheets 1, by welding 3, connects.
Two adjacent double-side cell sheets 1, described two adjacent double-side cell sheets 1, the conductive tape 2 in the first double-side cell sheet 1 front is connected by welding 3 with the conductive tape 2 at second double-side cell sheet 1 back side, after all double-side cell sheet 1 strings are good, adopt busbar (not shown) that both positive and negative polarity is drawn.
Without main grid double-side cell, adopt the process the same with common double-side cell, but figure and the main grid sign of thin grid are helped in the change of printing screen plate figure, the quantity of thin grid is 75.Above-mentioned tested to stepping without main grid double-side cell sheet by front power, wherein before test, need existing main grid test probe to be modified to the probe row who contacts with thin grid.Double-side cell sheet after sorting is placed on full-automatic conductive adhesive machine, as shown in the sectional view of accompanying drawing 3 Double-sided battery packs, each double-side cell sheet front and back is bonding three conductive tapes 2 and welding 3 respectively, every ten double-side cell sheets 1 are a string battery strings, six string battery strings is bonding complete after next step lamination of preparation.Before lamination, first lay the tempering coated glass that 3.2mm is thick, coated surface down, then on glass, lay the eva film that 0.45mm thickness is transparent, above battery strings being placed on, the back side, is used busbar that 6 string battery strings are confluxed upward again, reserving lead-out wire is connected with the terminal box in operation below, at the cell piece back side, put again an eva film, finally the thicker backboard of 0.5mm is placed on topmost, complete laminated piece.By laminated piece above, carry out EL test, if having foreign material and sliver, take out in time and change.Laminated piece is put into laminating machine lamination, and laminating temperature is 150 ℃, and the lamination time is 8min.The laminate temperature such as after lamination, need to lower, then carry out terminal box connection and encapsulating, wait after adhesive curing, assembly carries out rubber belt sealing around.Test suite obverse and reverse power on assembly IV tester.Double-sided battery pack in this scheme can be put into environmental cabinet to carry out senile experiment and packs the collection that system is carried out energy output into.
Claims (3)
- A conducting resinl connect without main grid Double-sided battery pack, it is characterized in that: comprise at least two double-side cell sheets, some weldings and some conductive tapes, described double-side cell sheet surface printing only prints thin grid line, conductive tape front is attached on the position of main grid line, welding is attached to the conductive tape back side, between two adjacent double-side cell sheets, by welding, connects.
- Conducting resinl according to claim 1 connect without main grid Double-sided battery pack, it is characterized in that: described two adjacent double-side cell sheets, the conductive tape in the first double-side cell sheet front is connected by welding with the conductive tape at the second double-side cell sheet back side.
- Conducting resinl according to claim 1 connect without main grid Double-sided battery pack, it is characterized in that: all double-side cell sheet strings well after, adopt busbar that both positive and negative polarity is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310581967.9A CN103618011A (en) | 2013-11-19 | 2013-11-19 | Non-main-grid double-faced battery pack connected with conductive adhesives |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310581967.9A CN103618011A (en) | 2013-11-19 | 2013-11-19 | Non-main-grid double-faced battery pack connected with conductive adhesives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103618011A true CN103618011A (en) | 2014-03-05 |
Family
ID=50168715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310581967.9A Pending CN103618011A (en) | 2013-11-19 | 2013-11-19 | Non-main-grid double-faced battery pack connected with conductive adhesives |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103618011A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489692A (en) * | 2015-12-28 | 2016-04-13 | 横店集团东磁股份有限公司 | Crystalline silicon solar cell without Ag main grid line and manufacturing process therefor |
| CN105742381A (en) * | 2016-04-27 | 2016-07-06 | 中利腾晖光伏科技有限公司 | Main-grid-line-free solar cell piece and solar cell |
| TWI553948B (en) * | 2015-08-31 | 2016-10-11 | 吳佳典 | Battery |
| CN106558631A (en) * | 2015-09-18 | 2017-04-05 | 上海太阳能工程技术研究中心有限公司 | Without main grid Double-sided battery pack and its processing technology |
| CN109580475A (en) * | 2017-09-28 | 2019-04-05 | 阿特斯阳光电力集团有限公司 | The test method of conductive adhesive force |
| CN114023842A (en) * | 2021-11-03 | 2022-02-08 | 东方日升新能源股份有限公司 | Connection method of solar cell string, solar cell module and preparation method thereof |
| CN114512573A (en) * | 2022-03-31 | 2022-05-17 | 深圳光远智能装备股份有限公司 | Welding process for stress-free welding equipment for cell in photovoltaic industry |
| CN114834147A (en) * | 2022-04-12 | 2022-08-02 | 中威新能源(成都)有限公司 | Solar cell bonding material printing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080169022A1 (en) * | 2005-08-02 | 2008-07-17 | Fujikura Ltd. | Electrode substrate and photoelectric conversion element |
| CN202004010U (en) * | 2011-03-10 | 2011-10-05 | 阿特斯(中国)投资有限公司 | Solar cell assembly |
| WO2012099257A1 (en) * | 2011-01-20 | 2012-07-26 | ソニーケミカル＆インフォメーションデバイス株式会社 | Solar cell module and method of manufacturing solar cell module |
| CN102683441A (en) * | 2011-03-10 | 2012-09-19 | 阿特斯(中国)投资有限公司 | Solar cell module |
| CN102800713A (en) * | 2012-08-27 | 2012-11-28 | 英利能源（中国）有限公司 | Solar cell sheet and solar cell |
-
2013
- 2013-11-19 CN CN201310581967.9A patent/CN103618011A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080169022A1 (en) * | 2005-08-02 | 2008-07-17 | Fujikura Ltd. | Electrode substrate and photoelectric conversion element |
| WO2012099257A1 (en) * | 2011-01-20 | 2012-07-26 | ソニーケミカル＆インフォメーションデバイス株式会社 | Solar cell module and method of manufacturing solar cell module |
| CN202004010U (en) * | 2011-03-10 | 2011-10-05 | 阿特斯(中国)投资有限公司 | Solar cell assembly |
| CN102683441A (en) * | 2011-03-10 | 2012-09-19 | 阿特斯(中国)投资有限公司 | Solar cell module |
| CN102800713A (en) * | 2012-08-27 | 2012-11-28 | 英利能源（中国）有限公司 | Solar cell sheet and solar cell |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI553948B (en) * | 2015-08-31 | 2016-10-11 | 吳佳典 | Battery |
| CN106558631A (en) * | 2015-09-18 | 2017-04-05 | 上海太阳能工程技术研究中心有限公司 | Without main grid Double-sided battery pack and its processing technology |
| CN105489692A (en) * | 2015-12-28 | 2016-04-13 | 横店集团东磁股份有限公司 | Crystalline silicon solar cell without Ag main grid line and manufacturing process therefor |
| CN105742381A (en) * | 2016-04-27 | 2016-07-06 | 中利腾晖光伏科技有限公司 | Main-grid-line-free solar cell piece and solar cell |
| CN109580475A (en) * | 2017-09-28 | 2019-04-05 | 阿特斯阳光电力集团有限公司 | The test method of conductive adhesive force |
| CN109580475B (en) * | 2017-09-28 | 2021-08-17 | 阿特斯阳光电力集团股份有限公司 | Method for testing adhesive force of conductive adhesive |
| CN114023842A (en) * | 2021-11-03 | 2022-02-08 | 东方日升新能源股份有限公司 | Connection method of solar cell string, solar cell module and preparation method thereof |
| CN114512573A (en) * | 2022-03-31 | 2022-05-17 | 深圳光远智能装备股份有限公司 | Welding process for stress-free welding equipment for cell in photovoltaic industry |
| CN114834147A (en) * | 2022-04-12 | 2022-08-02 | 中威新能源(成都)有限公司 | Solar cell bonding material printing device |
| CN114834147B (en) * | 2022-04-12 | 2023-07-25 | 中威新能源(成都)有限公司 | Printing device for solar cell adhesive material |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140305 |