CN105702764A - Battery component with anti-PID effect - Google Patents
Battery component with anti-PID effect Download PDFInfo
- Publication number
- CN105702764A CN105702764A CN201410710817.8A CN201410710817A CN105702764A CN 105702764 A CN105702764 A CN 105702764A CN 201410710817 A CN201410710817 A CN 201410710817A CN 105702764 A CN105702764 A CN 105702764A
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- China
- Prior art keywords
- pid
- adhesive film
- battery component
- eva adhesive
- battery
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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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- Joining Of Glass To Other Materials (AREA)
Abstract
The present invention relates to a battery component with an anti-PID effect. The battery component comprises a tempered glass layer, a battery layer, an ordinary EVA film and a backplate. The battery component also comprises an anti-PID EVA film and interconnection strips. The tempered glass layer, the anti-PID EVA film, the ordinary EVA film and the backplate are orderly stacked and connected through the interconnection strips. When the battery component runs, the anti-PID EVA film reduces the number of sodium ions which are deposited from the tempered glass layer to move and concentrate to the battery layer, and thus the PID effect of the component is prevented. Compared with the prior art, the content of vinyl acetate in the anti-PID EVA film is lower, and the anti-PID effect is better.
Description
Technical field
The present invention relates to a kind of photovoltaic module, especially relate to the battery component of a kind of anti-PID effect。
Background technology
Solar module makes there is leakage current between glass, encapsulating material for a long time under action of high voltage, a large amount of accumulation are on cell piece surface, the passivation effect making cell piece surface worsens, cause that FF, Isc, Voc reduce, making assembly property lower than design standard, this phenomenon is referred to as assembly PID effect。
At present, the encapsulation technology of assembly producer anti-PID effect is by adopting the antireflection layer battery sheet packaging assembly that Si/N ratio is high, to prevent assembly PID phenomenon, and change Si/N ratio and can be greatly increased cell piece and make cost, the lifting of cell piece cost is directly married again on assembly cost, and module manufacturer and user all can be caused serious cost pressure。
Secondly, in cell piece produces, if changing Si/N ratio can the conversion efficiency of cell piece be impacted, and the demand of efficient assembly has been become main flow by photovoltaic market at present, so the anti-PID effect encapsulation technology of assembly producer is unfavorable for production and the marketization of high-efficiency battery sheet and efficient assembly at present, there is significant limitation and difficulty in the popularization of this technology。
In addition some existing anti-PID photovoltaic modulies are merely by again the method tissue glass cationic of physical barrier and move towards cell piece, such as application number be 201320132923.3 Chinese patent disclose a kind of anti-PID photovoltaic module, described photovoltaic module ecto-entad is composited by safety glass layer, vinyl olefins co-polymer membrane, battery lamella, EVA adhesive film and backboard successively；Described vinyl olefins copolymer film thickness is 0.15～0.6mm, and described battery lamella is in series by multiple monocrystal silicon or polycrystalline silicon battery plate, and cell piece thickness is 140 μm～200 μm, and described EVA adhesive film thickness is 0.3～0.7mm。Namely what this patent adopted is that vinyl olefins co-polymer membrane carrys out the cationic movement of barrier metal。The mode of this kind of physical barrier can cause cation to pile up, and can not eliminate PID phenomenon on source。
Summary of the invention
The purpose of the present invention is contemplated to the defect overcoming above-mentioned prior art to exist and the battery component providing the significant anti-PID effect of a kind of effect。
A kind of battery component of anti-PID effect, including safety glass layer, battery lamella, plain edition EVA adhesive film and backboard, described battery component also includes anti-PID type EVA adhesive film and interconnecting strip, and described safety glass layer, anti-PID type EVA adhesive film, battery lamella, plain edition EVA adhesive film and backboard stack gradually connection by interconnecting strip；
When battery component runs, the reduction of described anti-PID type EVA adhesive film precipitates out the sodium ion quantity moving to battery lamella and being enriched with from safety glass layer, and then prevents the PID effect of assembly to occur。
Described battery component also includes busbar, and described battery lamella includes the cell piece of multiple series connection, and the plurality of cell piece is connected by busbar。
Isolation silver it is provided with between described cell piece。
Described battery lamella also includes the EVA cover fillet for bond isolation silver and cell piece。
Described anti-PID type EVA adhesive film is vinyl acetate content is the EVA adhesive film of 26%-28%。
Described anti-PID type EVA adhesive film is vinyl acetate content is the EVA adhesive film of 27%。
Compared with prior art, the invention have the advantages that
1) promote conveniently: because this encapsulation technology is mated completely with existing subassembly line, it is not necessary to hardware modification and input, therefore assembly producer can promote at any time。
2) simple to operate: only in component stack operation, this anti-PID type EVA need to be placed in glass embossing face, stack battery strings, common EVA, backboard successively, carry out lamination, frame up。
3) cost is low: the production of this anti-PID type EVA is to realize anti-PID function by adjusting the VA content of EVA and the insulating properties of self, adjust VA content and self insulating properties only need to change EVA factory formula and can be achieved with, therefore without increasing on cost, it is ensured that assembly cost does not change equally。
4) in anti-PID type EVA adhesive film, vinyl acetate content is 26%-28%, and ratio content also low 3-5% of vinylacetate in common anti-PID type glued membrane has better anti-PID effect。
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the present invention；
Fig. 2 is the front elevational schematic of the present invention；
Wherein: 1, safety glass layer, 2, anti-PID type EVA adhesive film, 3, battery lamella, 4, EVA cover fillet, 5, isolating bar, 6, plain edition EVA adhesive film, 7, backboard, 8, interconnecting strip, 9, busbar。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail。The present embodiment is carried out premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment。
A kind of battery component of anti-PID effect, as depicted in figs. 1 and 2, including safety glass layer 1, battery lamella 3, plain edition EVA adhesive film 6 and backboard 7, battery component also includes anti-PID type EVA adhesive film 2 and interconnecting strip 8, and safety glass layer 1, anti-PID type EVA adhesive film 2, battery lamella 3, plain edition EVA adhesive film 6 and backboard 7 stack gradually connection by interconnecting strip 8。
Battery component also includes busbar 9, and battery lamella 3 includes the cell piece of multiple series connection, and multiple cell pieces are connected by busbar 9。
Isolation silver 5 it is provided with between cell piece。
Battery lamella 3 also includes the EVA cover fillet 4 for bond isolation silver 5 and cell piece。
In anti-PID type EVA adhesive film 2, vinyl acetate content is 26%-28%, the present embodiment can content be the EVA adhesive film of 27%, anti-PID type EVA adhesive film 2 is the EVA adhesive film reducing vinyl acetate content, and then reduces hydrolyzable ester group content in anti-PID type EVA adhesive film 2。The minimizing of the ester group content of hydrolysis, can directly slow down and stop the Na+ precipitated out in safety glass layer 1 under hot and humid environment to the quantity of the movement on battery lamella 3 surface and enrichment under DC Electric Field, namely prevent the PID effect of assembly to occur。
In battery component processing, the battery component being made up of the anti-PID type EVA adhesive film 2 in upper strata and lower floor's plain edition EVA adhesive film 6 is placed on 140 DEG C～145 DEG C laminating machine hot plates, processed by high temperature and 5～6min evacuation (vacuum :-1Mp), the anti-PID type EVA adhesive film 2 in upper strata and lower floor's plain edition EVA adhesive film 6 are become molten state from solid-state, and the gap between safety glass layer 1, battery lamella 3 and backboard 7 is filled with。Then the pressure applying 1 atmospheric pressure (1Mp) on cell module back veneer 7 surface keeps 10～12min, cross-linking agent in the anti-PID type EVA adhesive film 2 in upper strata and lower floor's plain edition EVA adhesive film 6 decomposes, peroxide bridge in cross-linking agent breaks to form peroxy radical RO-, the H of alkyl is combined on EVA side chain, and two alkyl active groups just complete cross-linking reaction after combining。Safety glass layer 1, battery lamella 3 and backboard 7 are complex as a whole, and the battery lamella 3 after solidification no longer moves, and substantially do not produce thermal contraction。The battery component produced is except possessing good anti-PID performance, and otherwise performance is unaffected, meets the prescription of the outdoor 25 years longtime running of battery component。
It addition, this battery component is completely suitable for current assembly produces line configuration, whether automatization or manualization, all need not any hardware modification or input。Not affecting assembly production efficiency, meanwhile, the configuration design of battery component does not need to change, and production technology does not need to adjust。
Claims (6)
1. the battery component of an anti-PID effect, including safety glass layer, battery lamella, plain edition EVA adhesive film and backboard, it is characterized in that, described battery component also includes anti-PID type EVA adhesive film and interconnecting strip, and described safety glass layer, anti-PID type EVA adhesive film, battery lamella, plain edition EVA adhesive film and backboard stack gradually connection by interconnecting strip；
When battery component runs, the reduction of described anti-PID type EVA adhesive film precipitates out the sodium ion quantity moving to battery lamella and being enriched with from safety glass layer, and then prevents the PID effect of assembly to occur。
2. the battery component of a kind of anti-PID effect according to claim 1, it is characterised in that described battery component also includes busbar, and described battery lamella includes the cell piece of multiple series connection, and the plurality of cell piece is connected by busbar。
3. the battery component of a kind of anti-PID effect according to claim 2, it is characterised in that be provided with isolation silver between described cell piece。
4. the battery component of a kind of anti-PID effect according to claim 3, it is characterised in that described battery lamella also includes the EVA cover fillet for bond isolation silver and cell piece。
5. the battery component of a kind of anti-PID effect according to claim 1, it is characterised in that described anti-PID type EVA adhesive film is vinyl acetate content is the EVA adhesive film of 26%-28%。
6. the battery component of a kind of anti-PID effect according to claim 5, it is characterised in that described anti-PID type EVA adhesive film is vinyl acetate content is the EVA adhesive film of 27%。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710817.8A CN105702764A (en) | 2014-11-28 | 2014-11-28 | Battery component with anti-PID effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410710817.8A CN105702764A (en) | 2014-11-28 | 2014-11-28 | Battery component with anti-PID effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105702764A true CN105702764A (en) | 2016-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410710817.8A Pending CN105702764A (en) | 2014-11-28 | 2014-11-28 | Battery component with anti-PID effect |
Country Status (1)
| Country | Link |
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| CN (1) | CN105702764A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044581A (en) * | 2009-10-09 | 2011-05-04 | 中电电气(上海)太阳能科技有限公司 | Method for enhancing packaging efficiency of solar module |
| CN103146315A (en) * | 2013-03-27 | 2013-06-12 | 温州瑞阳光伏材料有限公司 | High-volume resistivity EVA (Ethylene Vinyl-acetate Copolymer) rubber film and preparation process thereof |
| CN103756581A (en) * | 2014-01-16 | 2014-04-30 | 南京红宝丽新材料有限公司 | PID (Potential Induced Degradation) resisting solar cell module packaging coating and preparation method thereof |
| CN103840036A (en) * | 2014-04-01 | 2014-06-04 | 润峰电力有限公司 | Preparation technology of PID resistance photovoltaic module |
| CN203859125U (en) * | 2014-02-26 | 2014-10-01 | 浙江正欣光电科技有限公司 | Anti-PID crystalline silicon solar cell assembly |
| CN204391130U (en) * | 2014-11-28 | 2015-06-10 | 中电电气(上海)太阳能科技有限公司 | A kind of battery component of anti-PID effect |
-
2014
- 2014-11-28 CN CN201410710817.8A patent/CN105702764A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044581A (en) * | 2009-10-09 | 2011-05-04 | 中电电气(上海)太阳能科技有限公司 | Method for enhancing packaging efficiency of solar module |
| CN103146315A (en) * | 2013-03-27 | 2013-06-12 | 温州瑞阳光伏材料有限公司 | High-volume resistivity EVA (Ethylene Vinyl-acetate Copolymer) rubber film and preparation process thereof |
| CN103756581A (en) * | 2014-01-16 | 2014-04-30 | 南京红宝丽新材料有限公司 | PID (Potential Induced Degradation) resisting solar cell module packaging coating and preparation method thereof |
| CN203859125U (en) * | 2014-02-26 | 2014-10-01 | 浙江正欣光电科技有限公司 | Anti-PID crystalline silicon solar cell assembly |
| CN103840036A (en) * | 2014-04-01 | 2014-06-04 | 润峰电力有限公司 | Preparation technology of PID resistance photovoltaic module |
| CN204391130U (en) * | 2014-11-28 | 2015-06-10 | 中电电气(上海)太阳能科技有限公司 | A kind of battery component of anti-PID effect |
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Application publication date: 20160622 |