CN202678369U - Solar backplane of back contact solar cell - Google Patents
Solar backplane of back contact solar cell Download PDFInfo
- Publication number
- CN202678369U CN202678369U CN 201220344947 CN201220344947U CN202678369U CN 202678369 U CN202678369 U CN 202678369U CN 201220344947 CN201220344947 CN 201220344947 CN 201220344947 U CN201220344947 U CN 201220344947U CN 202678369 U CN202678369 U CN 202678369U
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- Prior art keywords
- layer
- back contact
- intermediate insulation
- insulation gas
- solar 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
- 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 utility model discloses a solar backplane of a back contact solar cell, mainly comprising a metal conductive layer, an intermediate insulation gas-barrier layer and an outer weather resistance layer, wherein the intermediate insulation gas-barrier layer is arranged between the metal conductive layer and the outer weather resistance layer. The solar backplane of the back contact solar cell in the utility model can be helpful for increasing the sectional area of a conductive circuit so as to reduce the series resistance; and as the circuit is arranged on the back, the cell arrangement density can be improved, the effective power generation area of a module can be increased, the absolute efficiency of the module can be improved by more than 0.8%, automatic packaging lines of a string welding machine are omitted, and the productivity of the module can be improved to 6-8 times that of the prior art.
Description
Technical field
The utility model relates to a kind of solar cell backboard, relates in particular to a kind of solar energy backboard of back contact solar battery.
Background technology
With sunlight electric system power generation applications angle; independent battery also can't satisfy the demands; need after the many battery strings or parallel connection; be made into module by encapsulation; carry out array (PV Array) design by many modules again; can satisfy the power generation applications demand; therefore module is near the end product of practical application; and the main task of module package is how effectively to protect battery; keep the safety and reliability of long-term generating; consider based on the profit of manufacturing simultaneously; encapsulation technology still must be absorbed in reduction encapsulation loss and raising module efficiency; therefore, how to reach low encapsulation loss; high efficiency; the target of low-cost and high life is the key of module package technology.
The concept of back-contact solar cell (or being called the back electrode solar cell) is derived from 1975, development is so far above 30 years, range of application comprises monocrystalline and polycrystalline solar cell, and wherein outbalance has an interdigital formula back electrode solar cell (Interdigitated Back Contact; IBC), emitter-base bandgap grading penetration back electrode solar cell (Emitter Wrap Through; EWT), metal piercing formula back electrode solar cell (Metallization Wrap Through; MWT) with metal around limit formula back electrode solar cell (Metallization Wrap Around; MWA) four kinds of structures.
The NICE encapsulation technology is that basic principle is similar to the traditional components encapsulation technology, and characteristics are not re-use the EVA(ethylene-vinyl acetate copolymer; Ethylene-vinyl acetate copolymer) encapsulating material and need not the welding process of high temperature, but utilize the assembly inside and outside differential pressure to realize the good contact of plain conductor and battery electrode, the while edge uses organic encapsulating material PIB(polyisobutene; Poly-isobutylene) realize effectively isolation.The advantage of this NICE encapsulation technology technique is: one, cost (without the EVA materials'use and without welding process); Two, component power output promotes (pressure reduction causes contacting welding and cell metallic electrode good contact, and contact resistance reduces); Three, without the sliver of pyroprocess generation and the possible drawbacks such as power of battery loss; Four, the output of long-time high component power (without the burn-in effects of EVA etc.).
The solar cell package processing procedure is broadly divided into following several main action: one, process conducting channel at backing, as the battery strings coupling; Two, with adhesive dots on the electric circuit metal paper tinsel of backing, the electricity that battery is sent can be derived smoothly, and reaches good series connection; Three, with the punching of EVA precompose, hole need be avoided conductiving point Jiao Chu; Four, utilize Pick and Place(to pick up-mount) automation equipment puts solar cell to the tram; Five, repaving EVA and watch crystal, to finish module laminated; Six, module is laminated enter laminating machine before, with the laminated upset of module, make glass surface to the heating plate of laminating machine by tipping arrangement, encapsulate again.Be combined with backing by circuit, be conducive to strengthen the sectional area of conducting channel, to reduce series resistance, and the circuit back side, can improve battery-arrangements density, increase the effective generating area of module, and then the hoisting module absolute efficiency be more than 0.8%, the full-automatic packaging line that has lacked the series welding machine, module productivity ratio can be promoted to 6-8 times of prior art.
As shown in Figure 3, solar energy backboard profile for a kind of known solar cell, consist of by polyester film A and by the fluorine element film C that solid B is adhered to the polyester film both sides, yet this solar energy backboard can't be realized above-mentioned technology, therefore needs a kind of solar cell backboard that can realize above-mentioned technology.
The utility model content
In order to realize above-mentioned technology, the utility model provides a kind of solar energy backboard of back contact solar battery, and the solar energy backboard of back contact solar battery of the present utility model can improve the cell piece transfer ratio.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of solar energy backboard of back contact solar battery, mainly by metal conducting layer, intermediate insulation gas barrier layer with cover weathering layer outward and consist of, described intermediate insulation gas barrier layer is positioned at described metal conducting layer and describedly covers weathering layer between the two outward.
The further technical scheme that the utility model adopts is:
Described metal conducting layer is Copper Foil or nickel foil.
The thickness of described metal conducting layer is the 9-70 micron.
Described intermediate insulation gas barrier layer is polyester film.
The thickness of described intermediate insulation gas barrier layer is the 50-300 micron.
Be provided with the first adhesion agent layer between described intermediate insulation gas barrier layer and the described metal conducting layer, described intermediate insulation gas barrier layer and described metal conducting layer are bonding by described the first adhesion agent layer.
The described outer weathering layer that covers is the polyester film that fluorine element film or outer surface are coated with fluorine element coating.
Described outer covering between weathering layer and the described intermediate insulation gas barrier layer is provided with the second adhesion agent layer, describedly covers weathering layer outward and described intermediate insulation gas barrier layer is bonding by described the second adhesion agent layer.
The described outer thickness that covers weathering layer is the 25-300 micron.
The thickness of described the first adhesion agent layer and described the second adhesion agent layer is identical and be the 8-25 micron.
The beneficial effects of the utility model are: the solar energy backboard of back contact solar battery of the present utility model can be conducive to strengthen the sectional area of conducting channel, to reduce series resistance, and the circuit back side, can improve battery-arrangements density, increase the effective generating area of module, and then the hoisting module absolute efficiency lacked the full-automatic packaging line of series welding machine more than 0.8%, and the 6-8 that module productivity ratio can be promoted to prior art doubly.
Description of drawings
Fig. 1 is the solar energy backboard profile of the back contact solar battery of the utility model embodiment 1;
Fig. 2 is the solar energy backboard profile of the back contact solar battery of the utility model embodiment 2;
Fig. 3 is a kind of solar energy backboard profile of known solar cell.
Embodiment
Embodiment 1: a kind of solar energy backboard of back contact solar battery, as shown in Figure 1, mainly by metal conducting layer 1, intermediate insulation gas barrier layer 2 with cover weathering layer 3 outward and consist of, described intermediate insulation gas barrier layer 2 is positioned at described metal conducting layer 1 and describedly covers weathering layer 3 between the two outward.
Described metal conducting layer 1 is Copper Foil or nickel foil.
The thickness of described metal conducting layer 1 is the 9-70 micron.
Described intermediate insulation gas barrier layer 2 is polyester films.
The thickness of described intermediate insulation gas barrier layer 2 is the 50-300 micron.
Be provided with the first adhesion agent layer 4 between described intermediate insulation gas barrier layer 2 and the described metal conducting layer 1, described intermediate insulation gas barrier layer and described metal conducting layer are bonding by described the first adhesion agent layer.
Covering weathering layer outside described is the polyester film 31 that outer surface is coated with fluorine element coating 32.
Described outer covering between weathering layer 3 and the described intermediate insulation gas barrier layer 2 is provided with the second adhesion agent layer 5, describedly covers weathering layer outward and described intermediate insulation gas barrier layer is bonding by described the second adhesion agent layer.
The described outer thickness that covers weathering layer 3 is the 25-300 micron.
The thickness of described the first adhesion agent layer 4 and described the second adhesion agent layer 5 is identical and be the 8-50 micron.
The solar energy backboard preparation process of present embodiment is as follows: mainly be to prepare a thickness at the polyester film of 50-300 micron, lower surface can be that the ground floor adhesion agent layer of 10-50 micron and metal conducting layer that the second layer is followed the bonding 18-70 micron of basic unit and the outer weathering layer that covers of 25-300 micron get final product by matter such as epoxy resin or polyurethane and thickness respectively thereon.
The described fluorine element of present embodiment refers to fluoropolymer, for example: polyvinyl fluoride (Polyvinyl fluoride; PVF), Kynoar (Polyvinylidene Fluoride; PVDF), poly-trifluoro-ethylene (Polchlorotrifluorethylene; PCTFE), polytetrafluoroethylene (Polytetrafluorethylene; PTFE) or the copolymer of tetrafluoroethene and ethene (ETFE), and take polytetrafluoroethylene and tetrafluoroethene and ethylene copolymer as good.
Embodiment 2: as shown in Figure 2, be the solar energy backboard of present embodiment, the solar energy backboard of present embodiment and the solar energy backboard of embodiment 1 are roughly the same, and difference is that the outer weathering layer that covers of present embodiment is fluorine element film 6.
Above-described embodiment only is illustrative the utility model principle and effect thereof, but not is used for restriction the utility model.Rights protection scope of the present utility model should be listed such as claims.
Claims (10)
1. the solar energy backboard of a back contact solar battery, it is characterized in that: mainly by metal conducting layer, intermediate insulation gas barrier layer with cover weathering layer outward and consist of, described intermediate insulation gas barrier layer is positioned at described metal conducting layer and describedly covers weathering layer between the two outward.
2. the solar energy backboard of back contact solar battery as claimed in claim 1, it is characterized in that: described metal conducting layer is Copper Foil or nickel foil.
3. the solar energy backboard of back contact solar battery as claimed in claim 2, it is characterized in that: the thickness of described metal conducting layer is the 9-70 micron.
4. the solar energy backboard of back contact solar battery as claimed in claim 1, it is characterized in that: described intermediate insulation gas barrier layer is polyester film.
5. the solar energy backboard of back contact solar battery as claimed in claim 4, it is characterized in that: the thickness of described intermediate insulation gas barrier layer is the 50-300 micron.
6. the solar energy backboard of back contact solar battery as claimed in claim 4, it is characterized in that: be provided with the first adhesion agent layer between described intermediate insulation gas barrier layer and the described metal conducting layer, described intermediate insulation gas barrier layer and described metal conducting layer are bonding by described the first adhesion agent layer.
7. the solar energy backboard of back contact solar battery as claimed in claim 1 is characterized in that: the described outer weathering layer that covers is the polyester film that fluorine element film or outer surface are coated with fluorine element coating.
8. the solar energy backboard of back contact solar battery as claimed in claim 7, it is characterized in that: described outer covering between weathering layer and the described intermediate insulation gas barrier layer is provided with the second adhesion agent layer, describedly covers weathering layer outward and described intermediate insulation gas barrier layer is bonding by described the second adhesion agent layer.
9. the solar energy backboard of back contact solar battery as claimed in claim 7 is characterized in that: the described outer thickness that covers weathering layer is the 25-300 micron.
10. such as the solar energy backboard of claim 6 or 8 described back contact solar batteries, it is characterized in that: the thickness of described the first adhesion agent layer and described the second adhesion agent layer is identical and be the 8-50 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344947 CN202678369U (en) | 2012-07-17 | 2012-07-17 | Solar backplane of back contact solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220344947 CN202678369U (en) | 2012-07-17 | 2012-07-17 | Solar backplane of back contact solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678369U true CN202678369U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220344947 Expired - Fee Related CN202678369U (en) | 2012-07-17 | 2012-07-17 | Solar backplane of back contact solar cell |
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| Country | Link |
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| CN (1) | CN202678369U (en) |
Cited By (3)
| 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 |
| CN106601844A (en) * | 2016-11-29 | 2017-04-26 | 梁结平 | Self-cleaning heat dissipation type solar energy assembly |
| CN107658354A (en) * | 2014-11-17 | 2018-02-02 | 帝斯曼尚善太阳能科技（苏州）有限公司 | A kind of back contact solar battery conductive backings |
-
2012
- 2012-07-17 CN CN 201220344947 patent/CN202678369U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| CN107658354A (en) * | 2014-11-17 | 2018-02-02 | 帝斯曼尚善太阳能科技（苏州）有限公司 | A kind of back contact solar battery conductive backings |
| CN106601844A (en) * | 2016-11-29 | 2017-04-26 | 梁结平 | Self-cleaning heat dissipation type solar energy assembly |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20170717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |