CN205177858U - Two -sided battery pack of no main grid - Google Patents

Two -sided battery pack of no main grid Download PDF

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Publication number
CN205177858U
CN205177858U CN201520726660.8U CN201520726660U CN205177858U CN 205177858 U CN205177858 U CN 205177858U CN 201520726660 U CN201520726660 U CN 201520726660U CN 205177858 U CN205177858 U CN 205177858U
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China
Prior art keywords
main grid
cortina
copper tin
battery
tin metal
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CN201520726660.8U
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Chinese (zh)
Inventor
乔虹桥
张海磊
冯相赛
唐寅彬
王翀
王训春
赵欣侃
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Shanghai Solar Energy Research Center Co Ltd
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Shanghai Solar Energy Research Center Co Ltd
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Priority to CN201520726660.8U priority Critical patent/CN205177858U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

Abstract

The utility model provides a two -sided battery pack of no main grid, includes front tempering coated glass, positive EVA film, the two -sided battery piece array of no main grid, back EVA film and back tempering coated glass that the sequential cascade set up. The two -sided battery piece array of no main grid wherein includes that the multi -disc does not have the two -sided battery piece of main grid and multi -disc copper sikkim belongs to the cortina, and every copper sikkim belongs to the cortina and connects two battery pieces, forms a battery cluster, contacts a plurality of batteries cluster side by side again, forms the two -sided battery piece array of no main grid. The utility model discloses a copper tin wire substitutes battery piece main grid and brings the collection electric current with the copper soldering, has saved the use amount of silver -colored thick liquid, reduced since high temperature weld cause latent split with the lobe of a leaf problem. Because several times in large quantity of the main grid line are compared to copper tin wire, can collect the electric current of each position of battery piece uniformly, have improved the short -circuit current of battery piece to the conversion efficiency of battery piece and subassembly has been promoted.

Description

Without main grid Double-sided battery pack
Technical field
The utility model relates to solar cell, particularly relates to a kind of without main grid Double-sided battery pack.
Background technology
Double-side cell can double-side photic, except the energy output power of front, the back side also can be converted into electric energy reflection or the solar energy irradiated, transformation efficiency presents compared to traditional monocrystalline and polycrystalline cell piece and significantly promotes, front can realize the generating efficiency of 19.8%, and the back side can realize the generating efficiency of 19.2%.Adopt double-side cell sheet can change the mode of conventional mounting assembly, at right angle setting can obtain higher efficiency output than tilting to install on the contrary simultaneously.But due to double-side cell complicated process of preparation, through multiple tracks technique, cell piece is relatively weak, easily there is hidden splitting so adopt during conventional high temperature welding method; In addition, because the short circuit current of double-side cell sheet is larger, so power of battery loss is also comparatively large after adopting conventional packaging process encapsulation, the development that above reason causes double-side cell application is comparatively slow, and hidden the splitting of therefore seeking to reduce cell piece seems particularly important with the method for package power loss.
Utility model content
The purpose of this utility model, exactly in order to solve the problem, provides a kind of without main grid Double-sided battery pack.
In order to achieve the above object, the utility model have employed following technical scheme: a kind of without main grid Double-sided battery pack, comprise the front tempering coated glass of sequentially stacked setting, front eva film, without main grid double-side cell chip arrays, back side eva film and back side tempering coated glass.
Describedly comprise multi-disc without main grid double-side cell sheet and plurality of copper tin metal cortina without main grid double-side cell chip arrays, every sheet copper tin metal cortina connects two panels cell piece, namely first copper tin metal cortina connects the front of first cell piece and the back side of second cell piece, second copper tin metal cortina connects the front of second cell piece and the back side of the 3rd cell piece, by that analogy, form a battery strings, the two ends of battery strings form the positive and negative polarities of battery strings through busbar, again multiple battery strings is contacted side by side, formed without main grid double-side cell chip arrays.
Described copper tin metal cortina is bonded on thermoplasticity glued membrane by many copper tin metal silk uniform intervals and forms.
The wire diameter of described copper tin metal silk is 100 microns, and quantity is 30-60 root.
The technical solution of the utility model compared with prior art, has following two main advantages:
1, adopt copper tin metal silk substituting battery sheet main grid and copper soldering to bring collected current, save the use amount of silver slurry, reduce hiddenly splitting and sliver problem of causing due to high-temperature soldering.
2, because the quantity how more than several times of main gate line compared by copper tin metal silk, the electric current of each position of cell piece can be collected equably, improve the short circuit current of cell piece, thus improve the conversion efficiency of cell piece and assembly.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of the utility model without main grid Double-sided battery pack.
Fig. 2 is the partial structurtes schematic diagram of the utility model without main grid Double-sided battery pack.
Fig. 3 is the partial structurtes schematic diagram of the battery strings in the utility model.
Fig. 4 is the structural representation without main grid double-side cell sheet in the utility model.
Fig. 5 is the structural representation of the copper tin metal cortina in the utility model.
Embodiment
See Fig. 1, coordinate see Fig. 2, Fig. 3, Fig. 4, Fig. 5, of the present utility model without main grid Double-sided battery pack, comprise the order front tempering coated glass 1 of stacked setting, front eva film 2, without main grid double-side cell chip arrays 3, back side eva film 4 and back side tempering coated glass 5.
Multi-disc is comprised without main grid double-side cell sheet 31 and plurality of copper tin metal cortina 32 without main grid double-side cell chip arrays 3 in the utility model, two sides without main grid double-side cell sheet 31 does not all have main gate line, only have thin grid line 311, the quantity of the thin grid line of front and back is respectively 80 and 75.Every sheet copper tin metal cortina connects two panels cell piece, namely first copper tin metal cortina connects the front of first cell piece and the back side of second cell piece, second copper tin metal cortina connects the front of second cell piece and the back side of the 3rd cell piece, by that analogy, form a battery strings, the two ends of battery strings form the positive and negative polarities of battery strings through busbar 33, more multiple battery strings are contacted side by side, are formed without main grid double-side cell chip arrays.
Above-mentioned copper tin metal cortina 32 is bonded on thermoplasticity glued membrane 322 by many copper tin metal silk 321 uniform intervals and forms.The wire diameter of copper tin metal silk is 100 microns, and quantity is 30-60 root.
Here is a making embodiment without main grid Double-sided battery pack:
Adopt the double-side cell sheet of 60 shown in Fig. 4, cell piece is carried out sorting by front efficiency and operating current, ensures that 60 cell pieces are at same gear.
As shown in Figure 3, the series connection between cell piece 31 is by copper tin metal cortina 32, and a slice copper tin metal cortina can connect two panels battery, namely connects the front of first cell piece and the back side of second cell piece; Then get another sheet copper tin metal cortina and connect the front of second cell piece and the back side of the 3rd cell piece; By that analogy, the battery strings shown in Fig. 3 is formed.Battery strings two ends form the positive and negative polarities of battery strings through busbar 33, then are connected with other crosstalk ponds, and last 60 serial battery are complete.This process eliminates the technical process of common component welding welding, effectively can reduce that battery is hidden to be split.
The connection of above battery strings need be carried out when lamination: first lay the tempering coated glass that 2mm is thick before lamination, and coated surface, then lays the transparent eva film of 0.45mm thickness down on glass; Metal cortina and cell piece placed according to above-mentioned steps successively, 10 cell pieces are 1 string again, and 6 string battery strings busbars link up altogether, reserve lead-out wire and are connected with the terminal box in operation below; Put an eva film and the thick tempering coated glass of 2mm above battery strings upon connection again, the laminated piece (as shown in Figure 1 and Figure 2) of double-side assembly can be completed.
The laminated piece of above-mentioned double-side assembly, detailed construction is see Fig. 2, and the thin grid line of double-side cell sheet is vertically connected with copper tin metal silk, is stacked in together in two groups of package panel.
Laminated piece is above carried out EL test, the internal flaw of detection components.Detect qualified laminated piece and put into laminating machine lamination, laminating temperature is 148 DEG C, laminating technology time 20min.Lamination process, except the effect of encapsulation bonding cell piece, can also make the thin grid line of copper tin metal silk and cell piece form good ohmic contact at this temperature, is of value to the electric current that cell piece generation collected by copper tin metal silk.
The laminate temperature such as to need lower after lamination, carry out terminal box connection and encapsulating; After adhesive curing, around assembly, carry out rubber belt sealing; The electrical property of last test assembly obverse and reverse, carries out stepping and shipment according to the power in assembly front and current value.

Claims (3)

1., without a main grid Double-sided battery pack, it is characterized in that: comprise the order front tempering coated glass of stacked setting, front eva film, without main grid double-side cell chip arrays, back side eva film and back side tempering coated glass;
Describedly comprise multi-disc without main grid double-side cell sheet and plurality of copper tin metal cortina without main grid double-side cell chip arrays, every sheet copper tin metal cortina connects two panels cell piece, namely first copper tin metal cortina connects the front of first cell piece and the back side of second cell piece, second copper tin metal cortina connects the front of second cell piece and the back side of the 3rd cell piece, by that analogy, form a battery strings, the two ends of battery strings form the positive and negative polarities of battery strings through busbar, again multiple battery strings is contacted side by side, formed without main grid double-side cell chip arrays.
2. as claimed in claim 1 without main grid Double-sided battery pack, it is characterized in that: described copper tin metal cortina is bonded on thermoplasticity glued membrane by many copper tin metal silk uniform intervals and forms.
3. as claimed in claim 2 without main grid Double-sided battery pack, it is characterized in that: the wire diameter of described copper tin metal silk is 100 microns, and quantity is 30-60 root.
CN201520726660.8U 2015-09-18 2015-09-18 Two -sided battery pack of no main grid Active CN205177858U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520726660.8U CN205177858U (en) 2015-09-18 2015-09-18 Two -sided battery pack of no main grid

Publications (1)

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CN205177858U true CN205177858U (en) 2016-04-20

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106449798A (en) * 2016-11-16 2017-02-22 南昌大学 Double-side light-inlet crystal silicon photovoltaic module and manufacturing method thereof
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
CN106653913A (en) * 2017-01-24 2017-05-10 泰州乐叶光伏科技有限公司 Interconnection technology of N-type double-sided battery
CN106862788A (en) * 2017-04-15 2017-06-20 无锡奥特维科技股份有限公司 Busbar welding method and series welding system
CN112289889A (en) * 2020-10-20 2021-01-29 无锡奥特维科技股份有限公司 Battery string production method
CN112289891A (en) * 2020-10-22 2021-01-29 无锡奥特维科技股份有限公司 Battery string production method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN106449798A (en) * 2016-11-16 2017-02-22 南昌大学 Double-side light-inlet crystal silicon photovoltaic module and manufacturing method thereof
CN106653913A (en) * 2017-01-24 2017-05-10 泰州乐叶光伏科技有限公司 Interconnection technology of N-type double-sided battery
CN106862788A (en) * 2017-04-15 2017-06-20 无锡奥特维科技股份有限公司 Busbar welding method and series welding system
CN112289889A (en) * 2020-10-20 2021-01-29 无锡奥特维科技股份有限公司 Battery string production method
CN112289891A (en) * 2020-10-22 2021-01-29 无锡奥特维科技股份有限公司 Battery string production method

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