CN103094381A - Solar battery assembly - Google Patents
Solar battery assembly Download PDFInfo
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- CN103094381A CN103094381A CN2012105389835A CN201210538983A CN103094381A CN 103094381 A CN103094381 A CN 103094381A CN 2012105389835 A CN2012105389835 A CN 2012105389835A CN 201210538983 A CN201210538983 A CN 201210538983A CN 103094381 A CN103094381 A CN 103094381A
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- solar battery
- solar
- solar cell
- cell string
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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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Abstract
The invention relates to the technical field of solar battery assemblies. A solar battery assembly comprises a plurality of solar battery strings packaged through a packaging structure, solar battery pieces are formed in the same specification through cutting of a complete solar battery piece, the solar battery strings in each solar battery string group are connected in serial, the solar battery string groups are connected in serial, the number of the solar battery pieces in the solar battery strings is the same, the number of the solar battery strings in the solar battery string groups is the same, and the number of the solar battery strings in each solar battery string group is the reciprocal of the piece cutting ratio. Compared with the prior art, the solar battery assembly provided with the same use number of silicon pieces outputs voltage and currents basically same as those of an existing assembly, ohm loss generated by the currents passing an interconnection bar, series resistance of the whole assembly and the nominal operating cell temperature (NOCT) of the solar battery pieces are lowered, and peak power output of the assembly is improved.
Description
Technical field
The present invention relates to the solar module technical field of structures.
Background technology
Have a plurality of solar cell strings in solar battery sheet in existing solar module, solar cell was ganged up interconnecting strip and was connected successively, there are a lot of drawbacks in this connected mode, the below describes as an example of 60 156*156mm polycrystalline silicon solar cell assemblies example: as shown in Figure 1, in general the connected mode of this assembly is the design of 6*10, and namely 10 solar battery sheets 1 of every string, 6 solar cell strings are connected successively.Its drawback is: at first, the ohmic loss that interconnecting strip produces accounts for 50% left and right of whole assembly ohmic loss, and therefore very most solar energy loses with the form of heat; Secondly, as shown in Figure 2, owing to adopting 1 integrated form terminal box 8, longer for the cable that connects between assembly, the length of every cable must be no less than 1000mm could satisfy interconnected requirement, has caused like this waste of cable material; In addition, solar battery sheet all requires as having perfect outward appearance and electrical property solar cell full wafer, in case solar battery sheet partly damage, can't be for the manufacture of battery component.
Summary of the invention
Technical problem to be solved by this invention is: improve the electrical property of solar module, take full advantage of solar battery sheet defective, reduce cost of electricity-generating.
the technical solution adopted for the present invention to solve the technical problems is: a kind of solar module, comprise a plurality of solar cell strings that encapsulate by encapsulating structure, the solar cell string is in series by a plurality of solar battery sheets, solar battery sheet is the identical solar battery sheet of specification that complete solar battery sheet cuts into by the cell piece slice process, adjacent two and plural solar cell string are one group, solar cell string in each solar cell string group is connected in parallel to each other, series connection successively between solar cell string group, the quantity of the solar battery sheet in each solar cell string is identical, the quantity of the solar cell string in solar cell string group is identical, in each solar cell string group, the quantity of solar cell string is the inverse of section ratio.
Use the length of cable for shortening component interconnect, assembly has two terminal boxes, is respectively anodal terminal box and negative pole terminal box, and the solar battery sheet of the electrical connection in assembly is drawn positive pole by anodal terminal box, draws negative pole by the negative pole terminal box.
Particularly, anodal terminal box and negative pole terminal box lay respectively at the assembly back side, and are crisscross arranged.
For the consideration of cost of manufacture, preferred, the solar battery sheet half sheet solar battery sheet that to be complete solar battery sheet form according to 1/2 section ratio cutting, in each solar cell string group, the quantity of solar cell string is two strings.
Encapsulating structure comprises panel, backboard, frame and doubling film, panel and backboard lay respectively at sensitive surface and the shady face of solar cell string, between panel and solar cell string and between backboard and solar cell string, the doubling film is set, panel and backboard surrounding are by the frame edge sealing.
The invention has the beneficial effects as follows: this solar module with same piece of silicon consumption is compared with the assembly that existing full wafer solar battery sheet is connected in series, not only the voltage and current of output is basic identical, and reduce through the electric current of each solar battery sheet, the ohmic loss that the electric current of the interconnecting strip of flowing through produces, the series resistance of whole assembly, the nominal operation temperature (NOCT) of solar battery sheet also all can reduce, and the maximum output of assembly gets a promotion; The solar battery sheet that uses can be the cell piece that normal full wafer forms by slice process cutting, can be also that full wafer solar battery sheet defective is removed the normal solar battery sheet that is left after the flaw part by slice process, the solar battery sheet defective that in the past needed to scrap is taken full advantage of, reduced cost; The design of anodal terminal box and negative pole terminal box simultaneously can be shortened component interconnect with the length of cable, further reduces generation loss.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples;
Fig. 1 is the circuit connection diagram of cell piece in existing solar components;
Fig. 2 is the cabling diagram between existing solar components;
Fig. 3 is the circuit connection diagram of cell piece in existing solar components;
Fig. 4 is the cabling diagram between solar components of the present invention;
Fig. 5 is the Facad structure schematic diagram of solar components of the present invention;
Fig. 6 is the structure schematic diagram of solar components of the present invention;
Fig. 7 is assembly manufacturing process flow diagram of the present invention;
Wherein, 1. solar battery sheet, 2. anodal terminal box, 3. negative pole terminal box, 4. component interconnect cable, 5. diode, 6. positive pole, 7. negative pole, 8. integrated form terminal box.
Embodiment
As shown in Figure 3, a kind of solar module, comprise a plurality of solar cell strings that encapsulate by encapsulating structure, the solar cell string is in series by a plurality of solar battery sheets 1, encapsulating structure comprises panel, backboard, frame and doubling film, panel and backboard lay respectively at sensitive surface and the shady face of solar cell string, between panel and solar cell string and between backboard and solar cell string, the doubling film are set, and panel and backboard surrounding are by the frame edge sealing.The identical solar battery sheet of specification that solar battery sheet 1 cuts into by the cell piece slice process for complete solar battery sheet, adjacent two and plural solar cell string are one group, solar cell string in each solar cell string group is connected in parallel to each other, series connection successively between solar cell string group, the quantity of the solar battery sheet 1 in each solar cell string is identical, the quantity of the solar cell string in solar cell string group is identical, and in each solar cell string group, the quantity of solar cell string is the inverse of section ratio.As shown in Fig. 4 and 6, assembly has two terminal boxes, is respectively anodal terminal box 2 and negative pole terminal box 3, and the solar battery sheet 1 of the electrical connection in assembly is drawn positive pole 6 by anodal terminal box 2, draws negative pole 7 by negative pole terminal box 3.Anodal terminal box 2 and negative pole terminal box 3 lay respectively at the assembly back side, and are crisscross arranged.
For the consideration of cost of manufacture, the half sheet solar battery sheet that preferred solar battery sheet 1 forms according to 1/2 section ratio cutting for complete solar battery sheet, in each solar cell string group, the quantity of solar cell string is two strings.But the section ratio is not limited to 1/2; can be also 1/3,1/4 ... 1/n etc. arbitrary proportion; n is the integer greater than 2; such cutting mode is equally within protection scope of the present invention; the section ratio be 1/3 refer to that the full wafer solar battery sheet is cut into 3 Sunnys can cell pieces, and the quantity of the solar cell string in each solar cell string group is 3 strings.
By the following examples, the present invention is further illustrated:
The assembly that solar battery sheet 1 take 6*10 sheet specification as 156*156mm consists of is as improving object, it is the half sheet solar battery sheet of 156*78mm that the present embodiment assembly adopts 10*12 sheet specification, be to have 12 of 10 string solar cell strings, every strings in assembly, it is identical that this assembly and the assembly that the solar battery sheet 1 that traditional 6*10 sheet specification is 156*156mm consists of are compared the silicon chip consumption.Specification is that the full wafer solar battery sheet 1 of 156*156mm is processed into by the cell piece slice process the half sheet solar battery sheet that specification is 156*78mm, the section ratio is 1/2, as shown in Figure 3, two adjacent solar cell strings are one group, solar cell string in each solar cell string group is connected in parallel to each other, series connection successively between solar cell string group.
The existing assembly of the whole output current of assembly, voltage and same piece of silicon consumption is basically identical.Because the electric current of the monolithic battery of flowing through reduces by half, the ohmic loss that the electric current of the interconnecting strip of flowing through produces becomes approximately 1/4 of full wafer solar module, the series resistance of whole assembly has reduced by 80 ~ 100m Ω, the traditional components that the solar battery sheet 1 that the relative 6*10 sheet specification of maximum output meeting of assembly is 156*156mm consists of improves 2% left and right, therefore the nominal operation temperature (NOCT) of battery can reduce by 1 ℃, and the average year energy output kWh/Wp of assembly can promote 0.2% ~ 0.3%.
Assembly adopts 5 diodes 5,2 designs that terminal box is split type altogether, is respectively anodal terminal box 2 and negative pole terminal box 3, and each terminal box contains 1 component interconnect cable 4, and negative pole terminal box 3 contains 3 diodes 5; Anodal terminal box 2 contains 2 diodes 5.Due to this unique connected mode, the single component interconnect of terminal box can foreshorten to 550mm by 1000mm with cable 4 length.As shown in Figure 4.
As shown in Figure 7, the production of this assembly relates to following steps: the steps such as the section of the production of full wafer solar cell, full wafer solar cell electric performance test and outward appearance sorting, cell piece, half sheet solar battery sheet carry out that EL detects, half sheet solar battery sheet carries out I-V test, welding, lamination, lamination, frame up, fill terminal box, curing, assembly voltage-withstand test, electrical component performance test, assembly EL test.The part different from traditional components technique, the technological process that relates generally to is as follows:
The outward appearance sorting of full wafer solar cell: select the continuous at least half above area of sheet to satisfy the battery of normal appearance requirement.The battery of selecting can be to comprise half sheet broken angle, disconnected grid or the bad battery of other overall appearance normally; Can be also the completed cell sheet, cut complete latter two half sheet and all can be used.
Cell piece section: mainly be based on laser scribing device, the part of cell piece normal appearance is utilized laser energy to heat and cut.Be the loss of energy during the Stimulated Light cutting of the electrical property that guarantees cell piece, therefore cutting work must be carried out on the surface of the non-p-n of cell piece, the degree of depth of cutting need to reach 50% ~ 80% of cell piece gross thickness.
Half sheet solar battery sheet carries out EL and detects: through cutting step, need to increase the EL detecting step due to cell piece to cell piece.
Half sheet solar battery sheet carries out the I-V test: even also can there be electrical property difference in the full wafer scribing between two parts battery, sorting is with the mismatch of the electrical property of half sheet solar battery sheet in the reduction assembly again.
It is the assembly that 1/2 half sheet solar battery sheet consists of that the production stage of this assembly is not limited only to the section ratio, also is applicable to the assembly that solar battery sheet that other arbitrary proportions sections form consists of.
Claims (5)
1. solar module, comprise a plurality of solar cell strings that encapsulate by encapsulating structure, the solar cell string is in series by a plurality of solar battery sheets (1), it is characterized in that: the identical solar battery sheet of specification that described solar battery sheet (1) cuts into by the cell piece slice process for complete solar battery sheet, adjacent two and plural solar cell string are one group, solar cell string in each solar cell string group is connected in parallel to each other, series connection successively between solar cell string group, the quantity of the solar battery sheet (1) in each solar cell string is identical, the quantity of the solar cell string in solar cell string group is identical, in each solar cell string group, the quantity of solar cell string is the inverse of section ratio.
2. solar module according to claim 1, it is characterized in that: have two terminal boxes, respectively anodal terminal box (2) and negative pole terminal box (3), the solar battery sheet (1) of the electrical connection in assembly is drawn positive pole (6) by anodal terminal box (2), draws negative pole (7) by negative pole terminal box (3).
3. solar module according to claim 2 is characterized in that: described anodal terminal box (2) and negative pole terminal box (3) lay respectively at the assembly back side, and are crisscross arranged.
4. solar module according to claim 1, it is characterized in that: the half sheet solar battery sheet that described solar battery sheet (1) forms according to 1/2 section ratio cutting for complete solar battery sheet, in each solar cell string group, the quantity of solar cell string is two strings.
5. solar module according to claim 1, it is characterized in that: described encapsulating structure comprises panel, backboard, frame and doubling film, panel and backboard lay respectively at sensitive surface and the shady face of solar cell string, between panel and solar cell string and between backboard and solar cell string, the doubling film is set, panel and backboard surrounding are by the frame edge sealing.
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| CN2012105389835A CN103094381A (en) | 2012-12-13 | 2012-12-13 | Solar battery assembly |
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| CN2012105389835A CN103094381A (en) | 2012-12-13 | 2012-12-13 | Solar battery assembly |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868016A (en) * | 2015-05-27 | 2015-08-26 | 常州大学 | Novel high-efficiency photovoltaic assembly preparation method |
| CN105489676A (en) * | 2016-01-05 | 2016-04-13 | 青岛隆盛晶硅科技有限公司 | Novel solar cell module |
| CN105633187A (en) * | 2016-01-04 | 2016-06-01 | 河海大学常州校区 | High-generating performance photovoltaic module |
| CN105789359A (en) * | 2016-03-29 | 2016-07-20 | 晶澳（扬州）太阳能科技有限公司 | Manufacturing method for double-face solar energy cell assembly |
| CN106449832A (en) * | 2016-09-06 | 2017-02-22 | 苏州阿特斯阳光电力科技有限公司 | Solar cell module and fabrication method thereof |
| CN106711259A (en) * | 2017-02-06 | 2017-05-24 | 浙江正泰太阳能科技有限公司 | Slicing battery photovoltaic module |
| CN106960889A (en) * | 2017-05-27 | 2017-07-18 | 常州天合光能有限公司 | A kind of solar cell module |
| CN107275420A (en) * | 2017-07-12 | 2017-10-20 | 无锡尚德太阳能电力有限公司 | A kind of half section photovoltaic module circuit and half section photovoltaic module |
| CN107690708A (en) * | 2017-08-28 | 2018-02-13 | 通威太阳能（合肥）有限公司 | A kind of photovoltaic module internal protection circuitry structure with independent generator unit |
| CN107863396A (en) * | 2017-11-02 | 2018-03-30 | 南京日托光伏科技股份有限公司 | A kind of back-contact solar module and preparation method |
| WO2019004934A1 (en) * | 2017-06-29 | 2019-01-03 | Sivaraman Jeevan | Photovoltaic module construction method |
| CN109830553A (en) * | 2019-03-25 | 2019-05-31 | 合肥中南光电有限公司 | A kind of half solar components |
| CN109994567A (en) * | 2017-12-30 | 2019-07-09 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
| EP3017520B1 (en) | 2013-07-05 | 2020-10-14 | REC Solar Pte. Ltd. | Solar cell assembly |
| CN112038428A (en) * | 2020-09-04 | 2020-12-04 | 浙江晶科能源有限公司 | Solar cell module |
| CN115889205A (en) * | 2021-09-23 | 2023-04-04 | 环晟光伏(江苏)有限公司 | Method for identifying and selecting small laminated cell strips |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3017520B1 (en) | 2013-07-05 | 2020-10-14 | REC Solar Pte. Ltd. | Solar cell assembly |
| CN104868016A (en) * | 2015-05-27 | 2015-08-26 | 常州大学 | Novel high-efficiency photovoltaic assembly preparation method |
| CN105633187A (en) * | 2016-01-04 | 2016-06-01 | 河海大学常州校区 | High-generating performance photovoltaic module |
| CN105489676A (en) * | 2016-01-05 | 2016-04-13 | 青岛隆盛晶硅科技有限公司 | Novel solar cell module |
| CN105789359A (en) * | 2016-03-29 | 2016-07-20 | 晶澳（扬州）太阳能科技有限公司 | Manufacturing method for double-face solar energy cell assembly |
| CN106449832A (en) * | 2016-09-06 | 2017-02-22 | 苏州阿特斯阳光电力科技有限公司 | Solar cell module and fabrication method thereof |
| CN106711259A (en) * | 2017-02-06 | 2017-05-24 | 浙江正泰太阳能科技有限公司 | Slicing battery photovoltaic module |
| CN106960889A (en) * | 2017-05-27 | 2017-07-18 | 常州天合光能有限公司 | A kind of solar cell module |
| WO2019004934A1 (en) * | 2017-06-29 | 2019-01-03 | Sivaraman Jeevan | Photovoltaic module construction method |
| CN107275420A (en) * | 2017-07-12 | 2017-10-20 | 无锡尚德太阳能电力有限公司 | A kind of half section photovoltaic module circuit and half section photovoltaic module |
| CN107275420B (en) * | 2017-07-12 | 2019-04-09 | 无锡尚德太阳能电力有限公司 | A kind of half is sliced photovoltaic module circuit and half slice photovoltaic module |
| CN107690708A (en) * | 2017-08-28 | 2018-02-13 | 通威太阳能（合肥）有限公司 | A kind of photovoltaic module internal protection circuitry structure with independent generator unit |
| CN107863396A (en) * | 2017-11-02 | 2018-03-30 | 南京日托光伏科技股份有限公司 | A kind of back-contact solar module and preparation method |
| CN109994567A (en) * | 2017-12-30 | 2019-07-09 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
| CN111640812A (en) * | 2017-12-30 | 2020-09-08 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
| CN109994567B (en) * | 2017-12-30 | 2024-05-17 | 苏州阿特斯阳光电力科技有限公司 | Photovoltaic module |
| CN109830553A (en) * | 2019-03-25 | 2019-05-31 | 合肥中南光电有限公司 | A kind of half solar components |
| CN112038428A (en) * | 2020-09-04 | 2020-12-04 | 浙江晶科能源有限公司 | Solar cell module |
| CN112038428B (en) * | 2020-09-04 | 2023-08-11 | 浙江晶科能源有限公司 | Solar cell module |
| CN115889205A (en) * | 2021-09-23 | 2023-04-04 | 环晟光伏(江苏)有限公司 | Method for identifying and selecting small laminated cell strips |
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Application publication date: 20130508 |