CN102751361A - Back-contact solar battery string and production method thereof - Google Patents
Back-contact solar battery string and production method thereof Download PDFInfo
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- CN102751361A CN102751361A CN2012102598580A CN201210259858A CN102751361A CN 102751361 A CN102751361 A CN 102751361A CN 2012102598580 A CN2012102598580 A CN 2012102598580A CN 201210259858 A CN201210259858 A CN 201210259858A CN 102751361 A CN102751361 A CN 102751361A
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- contact solar
- solar cell
- back contact
- conducting resinl
- welding
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- 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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- 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
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Abstract
The invention discloses a back-contact solar battery string, which comprises a plurality of back-contact solar cells, solidified conductive glue and a metal soldering belt, wherein the back-contact solar cells are arranged in a linear way at intervals, and the back surfaces of the back-contact solar cells are adhered with the metal soldering belt through the solidified conductive glue. The invention also discloses a production method of the back-contact solar battery string. Due to the adoption of the back-contact solar battery string and the production method thereof, the adhering and solidification problem of the back-contact solar cells and the soldering belt can be solved, and the situation that the solar cells and the soldering belt shift before the conductive glue is solidified to influence the performance of the back-contact solar battery string is prevented.
Description
Technical field
The present invention relates to technical field of solar batteries, particularly back contact solar cell string and preparation method thereof.
Background technology
The production process of conventional solar module mainly comprises: single weldering, series welding, lamination, lamination, frame up etc.; Novel back contact solar cell establishment of component operation mainly comprises: beat glue, series connection, curing, lamination, lamination, frame up etc.; From production process, both differences mainly are the step before the lamination.This is that the latter adopts the method for conductive adhesive because the former adopts welding method, can make the fragment rate reduction with respect to traditional welding because bonding temp is low; On the other hand, from photoelectric conversion efficiency, the assembly of unit are, because the battery sheet sensitive surface of back of the body contact assembly does not have welding, also dereliction grid line and secondary grid line, thereby the area of sensitive surface crested is few, photoelectric conversion efficiency will be apparently higher than conventional assembly.At present, the back contact solar cell assembly uses conductive backings to encapsulate, and cost is higher.
Summary of the invention
Goal of the invention: to the problem and shortage of above-mentioned prior art existence; The purpose of this invention is to provide a kind of back contact solar cell string and preparation method thereof; Solve the problem of back contact solar cell sheet (being called for short " battery sheet ") and the bonding curing of welding; Prevent that battery sheet and welding from solidifying anterior displacement at conducting resinl, influences assembly property.
Technical scheme: for realizing the foregoing invention purpose; First kind of technical scheme that the present invention adopts is a kind of back contact solar cell string; Comprise a plurality of back contact solar cell sheets, the conducting resinl that has solidified and metal welding; Said a plurality of back contact solar cell sheet is linear interval to be arranged, and the back side of back contact solar cell sheet is bonding through the conducting resinl and the metal welding that have solidified.
Further, said metal welding is laid on the main grid line at the back contact solar cell sheet back side.
Second kind of manufacture method that technical scheme is a kind of back contact solar cell string that the present invention adopts comprises the steps:
(1) at the back side of a plurality of back contact solar cell sheets spraying conducting resinl;
(2) with the back contact solar cell sheet back side up linearity be laid on the series connection template on;
(3) the metal welding is laid on the back side of back contact solar cell sheet;
(4) will the connect fixed-site of template, back contact solar cell sheet and welding;
(5) series connection template, back contact solar cell sheet and the welding heating to fixing solidified conducting resinl.
Further, said metal welding is laid on the main grid line at the back contact solar cell sheet back side.
Further, said series connection template is a metallic plate, and the surface of this metallic plate is provided with a plurality of grooves that linear interval is arranged that are; In the said step (4), metal otter board is placed on the back contact solar cell sheet of laying welding, and with clamps metal otter board and metallic plate.
Further, also comprise step (6): remove said metallic plate and metal otter board.
Further, said conducting resinl is a silver particles resin conducting resinl, and in the said step (5), curing temperature is 180 ℃, stablizes 10 minutes.
Further, said conducting resinl is a tin bismuth granule subtree fat conducting resinl, and in the said step (5), curing temperature is 300 ℃, stablizes for 10 seconds.
Beneficial effect: the present invention can effectively pass through curing conductive glue; Carry out the bonding series connection of back contact solar cell sheet; Solve the problem of the conducting resinl integrally curing on the battery sheet after connecting, the conducting resinl that need not on the single battery sheet solidifies separately, has improved output capacity; Prevent that battery sheet and welding from solidifying anterior displacement at conducting resinl, influences assembly property.
Description of drawings
Fig. 1 is the sketch map of self-contained battery sheet and each layer of metal welding belting;
Fig. 2 is the floor map of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
As depicted in figs. 1 and 2, the manufacture method of back contact solar cell string comprises the steps:
(1) utilize automatic adhesive supplier on the main grid line at back contact solar cell sheet 4 back sides, to spray conducting resinl;
(2) prepare series connection template 2: the series connection template is aluminium alloy or corrosion resistant plate, which is provided with a string groove, and the thickness of the degree of depth of groove and battery sheet is suitable, and the shape of groove is consistent with the battery sheet, also is rectangle, and the size of groove is also identical with the battery sheet; The battery sheet that will spray conducting resinl then is laid in the groove of series connection template successively, and the back side of battery sheet up;
(3) many strip metals welding 3 is laid on the main grid line of cell back face, paving mode is as shown in Figure 2, guarantees to have at least between per two adjacent battery sheets two strip metal weldings to link to each other, and two best being spaced of welding, has reached best solidification effect;
(4) confirm the position of battery sheet and welding corresponding errorless after; Metal otter board 1 is put down gently on the battery sheet; And four jiaos of metal otter board with clip fixing metal web plate and series connection template, prevent that battery sheet and metal welding misplace in moving process, influence solidification effect;
(5) metal otter board that fixes, the battery sheet (comprising conducting resinl and metal welding on it) that connects and series connection template are put into continuous tunnel furnace together; Carry out the different temperatures setting to different conducting resinls: when using silver particles resin conducting resinl; The continuous tunnel furnace furnace temperature is arranged on 180 ℃; Stablized 10 minutes, silver particles resin conducting resinl composition is resin, silver particles, scaling powder etc.; When using tin bismuth granule subtree fat conducting resinl, the continuous tunnel furnace furnace temperature is arranged on 300 ℃, stablizes for 10 seconds, and tin bismuth granule subtree fat conducting resinl composition is resin, tin particle, bismuth granule, scaling powder etc.;
(6) conducting resinl solidifies completion; The metal otter board that fixes, the battery sheet (comprising conducting resinl and metal welding on it) that connects and series connection template are taken out from continuous tunnel furnace; Unclamp clip; Unload metal otter board and supply fixing use next time with the series connection template, this moment, the back contact solar cell sheet of series connection was connected to the back contact solar cell string.
In the present embodiment, metal otter board also can be replaced by the cover plate of other same function, is not limited to the described metal otter board of present embodiment.
The temperature control of continuous tunnel furnace, the conducting resinl that present embodiment uses uses the hot curing mode, and curing temperature is controlled by infrared temperature sounder.Yet present embodiment is not limited to the conducting resinl of hot curing, other for example: the conducting resinl of ultra-violet curing and tin cream also can be used as substituting of present embodiment, and continuous tunnel furnace can provide heating or ultraviolet irradiation.
Present embodiment continuous tunnel furnace heating capable of using also can be used add in-place thermic devices or original position ultraviolet irradiation device, avoids mobile.
Claims (8)
1. back contact solar cell string; Comprise a plurality of back contact solar cell sheets, the conducting resinl that has solidified and metal welding; Said a plurality of back contact solar cell sheet is linear interval to be arranged, and the back side of back contact solar cell sheet is bonding through the conducting resinl and the metal welding that have solidified.
2. according to the said back contact solar cell string of claim 1, it is characterized in that: said metal welding is laid on the main grid line at the back contact solar cell sheet back side.
3. the manufacture method of a back contact solar cell string comprises the steps:
(1) at the back side of a plurality of back contact solar cell sheets spraying conducting resinl;
(2) with the back contact solar cell sheet back side up linearity be laid on the series connection template on;
(3) the metal welding is laid on the back side of back contact solar cell sheet;
(4) will the connect fixed-site of template, back contact solar cell sheet and welding;
(5) series connection template, back contact solar cell sheet and the welding heating to fixing solidified conducting resinl.
4. according to the manufacture method of the said a kind of back contact solar cell string of claim 3, it is characterized in that: said metal welding is laid on the main grid line at the back contact solar cell sheet back side.
5. according to the manufacture method of the said a kind of back contact solar cell string of claim 3, it is characterized in that: said series connection template is a metallic plate, and the surface of this metallic plate is provided with a plurality of grooves that linear interval is arranged that are; In the said step (4), metal otter board is placed on the back contact solar cell sheet of laying welding, and with clamps metal otter board and metallic plate.
6. according to the manufacture method of the said a kind of back contact solar cell string of claim 3, it is characterized in that: also comprise step (6): remove said metallic plate and metal otter board.
7. according to the manufacture method of the said a kind of back contact solar cell string of claim 3, it is characterized in that: said conducting resinl is a silver particles resin conducting resinl, and in the said step (5), curing temperature is 180 ℃, stablizes 10 minutes.
8. according to the manufacture method of the said a kind of back contact solar cell string of claim 3, it is characterized in that: said conducting resinl is a tin bismuth granule subtree fat conducting resinl, and in the said step (5), curing temperature is 300 ℃, stablizes for 10 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102598580A CN102751361A (en) | 2012-07-25 | 2012-07-25 | Back-contact solar battery string and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102598580A CN102751361A (en) | 2012-07-25 | 2012-07-25 | Back-contact solar battery string and production method thereof |
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| CN102751361A true CN102751361A (en) | 2012-10-24 |
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| CN2012102598580A Pending CN102751361A (en) | 2012-07-25 | 2012-07-25 | Back-contact solar battery string and production method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103144300A (en) * | 2013-03-18 | 2013-06-12 | 天津英利新能源有限公司 | Photovoltaic module and welding method of photovoltaic module |
| CN103203557A (en) * | 2013-01-29 | 2013-07-17 | 太仓海润太阳能有限公司 | Welding method for back contact solar cell module |
| CN105945376A (en) * | 2016-07-06 | 2016-09-21 | 苏州协鑫集成科技工业应用研究院有限公司 | Welding method for solar cell piece assembly, solar cell piece assembly and preparing method for solar cell piece assembly |
| WO2018023940A1 (en) * | 2016-08-02 | 2018-02-08 | 泰州中来光电科技有限公司 | Back-contact solar cell string and preparation method, assembly and system therefor |
| 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 |
| CN112226169A (en) * | 2020-09-25 | 2021-01-15 | 苏州赛伍应用技术股份有限公司 | Solder strip carrier film, preparation method thereof, solder strip composite body and battery piece composite body |
| CN114649443A (en) * | 2022-03-03 | 2022-06-21 | 浙江爱旭太阳能科技有限公司 | Back contact solar cell string, preparation method thereof, cell module and photovoltaic system |
| CN115172486A (en) * | 2022-07-12 | 2022-10-11 | 青海黄河上游水电开发有限责任公司西宁太阳能电力分公司 | IBC solar cell module, manufacturing method thereof and IBC solar cell module string |
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| CN201210493Y (en) * | 2008-04-17 | 2009-03-18 | 中电电气(上海)太阳能科技有限公司 | Encapsulation construction of solar cell component |
| CN102132423A (en) * | 2008-08-27 | 2011-07-20 | 应用材料股份有限公司 | Back contact solar cell modules |
| CN202332869U (en) * | 2011-08-30 | 2012-07-11 | 捷策节能科技（苏州）有限公司 | Back contact type solar cell piece and solar cell component |
| CN202749390U (en) * | 2012-07-25 | 2013-02-20 | 合肥海润光伏科技有限公司 | Back contact solar battery string |
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2012
- 2012-07-25 CN CN2012102598580A patent/CN102751361A/en active Pending
Patent Citations (4)
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| CN201210493Y (en) * | 2008-04-17 | 2009-03-18 | 中电电气(上海)太阳能科技有限公司 | Encapsulation construction of solar cell component |
| CN102132423A (en) * | 2008-08-27 | 2011-07-20 | 应用材料股份有限公司 | Back contact solar cell modules |
| CN202332869U (en) * | 2011-08-30 | 2012-07-11 | 捷策节能科技（苏州）有限公司 | Back contact type solar cell piece and solar cell component |
| CN202749390U (en) * | 2012-07-25 | 2013-02-20 | 合肥海润光伏科技有限公司 | Back contact solar battery string |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203557A (en) * | 2013-01-29 | 2013-07-17 | 太仓海润太阳能有限公司 | Welding method for back contact solar cell module |
| CN103144300A (en) * | 2013-03-18 | 2013-06-12 | 天津英利新能源有限公司 | Photovoltaic module and welding method of photovoltaic module |
| CN105945376A (en) * | 2016-07-06 | 2016-09-21 | 苏州协鑫集成科技工业应用研究院有限公司 | Welding method for solar cell piece assembly, solar cell piece assembly and preparing method for solar cell piece assembly |
| WO2018023940A1 (en) * | 2016-08-02 | 2018-02-08 | 泰州中来光电科技有限公司 | Back-contact solar cell string and preparation method, assembly and system therefor |
| 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 |
| CN112226169A (en) * | 2020-09-25 | 2021-01-15 | 苏州赛伍应用技术股份有限公司 | Solder strip carrier film, preparation method thereof, solder strip composite body and battery piece composite body |
| CN114649443A (en) * | 2022-03-03 | 2022-06-21 | 浙江爱旭太阳能科技有限公司 | Back contact solar cell string, preparation method thereof, cell module and photovoltaic system |
| CN114649443B (en) * | 2022-03-03 | 2024-04-16 | 浙江爱旭太阳能科技有限公司 | Back contact solar cell string, preparation method thereof, cell assembly and photovoltaic system |
| CN115172486A (en) * | 2022-07-12 | 2022-10-11 | 青海黄河上游水电开发有限责任公司西宁太阳能电力分公司 | IBC solar cell module, manufacturing method thereof and IBC solar cell module string |
| CN115172486B (en) * | 2022-07-12 | 2024-03-01 | 青海黄河上游水电开发有限责任公司西宁太阳能电力分公司 | IBC solar cell module, manufacturing method thereof and IBC solar cell pack string |
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Application publication date: 20121024 |