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A p-type double-sided battery packaging adhesive film

A technology for encapsulating film and double-sided cells, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of increasing component cost, narrow process window, high price, etc., to improve initial power, improve power gain, increase The effect of utilization

Active Publication Date: 2020-07-28
嘉兴隆基乐叶光伏科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, PO as a packaging material is expensive, which increases the cost of components, and the process window is narrow, and there are the following problems:
[0009] (3) Material defects: low light transmittance (reducing the initial power of the module), high internal stress in the product during the aging process, easy to cause cracks in crystalline silicon cells, low product adhesion, high and low temperature cycles are prone to crystallization, Slow crosslinking speed, low degree of crosslinking and high temperature creep

Method used

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  • A p-type double-sided battery packaging adhesive film
  • A p-type double-sided battery packaging adhesive film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The P-type double-sided battery encapsulating adhesive film of this embodiment includes PO resin with a melt index range of 5g / 10min, EVA resin with a mass percentage of vinyl acetate (VA) of 25%, 3,5-di-tert-butyl -Dioctadecyl 4-hydroxybenzylphosphonate, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-tris Oxyzine-2,4,6-(1H,3H,5H)-trione, a mixture of di-n-octyltin dilaurate and polyethylene glycol dilaurate, 2,5-dimethyl-2,5-di-tert Butylperoxyhexane, bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate and vinyltriacetoxysilane;

[0045] Among them, the mass percentage of octene in PO resin is 20%, and the light transmittance is > 85%; the light transmittance of EVA resin is > 90%; Film formation, the mass percentage of PO resin in the compound is 10%, and the rest is EVA resin;

[0046] In the encapsulation film, the antioxidant content is 0.4% in terms of mass percentage: the content of the main agent 3,5-di-tert-butyl-4-hydroxybenzyl phosphonic acid dioct...

Embodiment 2

[0052] The P-type double-sided battery encapsulating adhesive film of this embodiment includes PO resin with a melt index range of 18g / 10min, PO resin with a melt index range of 12g / 10min, and vinyl acetate (VA) with a mass percentage of 32%. EVA resin, dioctadecyl-4-tert-butyl-3-hydroxy-2,6-dimethylbenzylphosphonate, 1,3,5-tris(4-tert-butyl-3-hydroxy- 2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione, di-n-octyltin dilaurate and polyethylene glycol di Mixture of laurates, 2,5-dimethyl-2,5-di-tert-butylperoxyhexane, ethyl 3,3-di(tert-butylperoxy)butyrate, 2-hydroxy-4-methyl Oxybenzophenone, Vinyltriacetoxysilane and Vinyltris(β-methoxyethoxy)silane;

[0053] Among them, the mass percentage of octene in PO resin is 25%, and the light transmittance is > 85%; the light transmittance of EVA resin is > 90%; PO resin and EVA resin are compounded, and the compounding method is after blending and doping Extruded into film, the mass percentage of PO resin with a melt index r...

Embodiment 3

[0060] The P-type double-sided battery encapsulating adhesive film of this embodiment includes PO resin with a melt index range of 8g / 10min, PO resin with a melt index range of 15g / 10min, and vinyl acetate (VA) with a mass percentage of 23%. The mass percent composition of EVA resin, vinyl acetate (VA) is the EVA resin of 28%, three (4-nonylphenol) phosphite, three (2,4-di-tert-butylphenyl) phosphite, A mixture of di-n-octyltin dilaurate and polyethylene glycol dilaurate, n-butyl 4,4-bis(tert-amylperoxy)valerate, tert-butyl peroxy 2-ethylhexyl carbonate, 3 , ethyl 3-bis(tert-butylperoxy)butyrate, 2-hydroxy-4-n-octyloxybenzophenone and vinyltris(β-methoxyethoxy)silane;

[0061] Among them, the mass percentage of PO resin octene is 30%, and the light transmittance is > 85%; the light transmittance of EVA resin is > 90%; Go out and form a film, the mass percentage composition of the PO resin that the melt index range is 8g / 10min is 35% in the compound, the mass percentage compos...

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Abstract

The invention relates to the technical field of photovoltaic module processing, in particular to a P-type double-surface battery encapsulating plastic film. The P-type double-surface battery encapsulating plastic film comprises first matrix resin, second matrix resin, an antioxidant, a thermo-oxidative stabilizer, a cross-linking agent, a light stabilizer and a silane coupling agent, wherein the first matrix resin is PO (ethylene-octane copolymer) resin with the melt index range of 5 to 18 g / 10 min; the second matrix resin is EVA (ethylene-vinyl acetate) resin with 23 to 32 percent of VA (vinyl acetate) in percentage by mass; the first matrix resin and the second matrix resin are compounded, wherein the doping proportion range is 10 to 90 percent; the content of the antioxidant is 0.4 to 2.5 percent; the content of the thermo-oxidative stabilizer is 0.4 to 2.7 percent; the content of the cross-linking agent is 0.5 to 3.3 percent; the content of the light stabilizer is 0.1 to 1.0 percent; the content of the silane coupling agent is 0.1 to 2.1 percent. The encapsulating plastic film can overcome defects of an existing simple EVA resin encapsulating plastic film or an existing simple PO resin encapsulating plastic film.

Description

technical field [0001] The invention relates to the technical field of photovoltaic module processing, in particular to a P-type double-sided battery packaging adhesive film. Background technique [0002] After photovoltaic modules have been used for a period of time, especially after a large photovoltaic power plant has been in operation for several years, the photovoltaic modules will experience potential induced degradation (PID, Potential Induced Degradation). There are more and more discussions on the causes and prevention methods of PID. At present, anti-PID performance has become one of the key technical requirements of components. This trend also makes more and more domestic owners of photovoltaic power plants, photovoltaic cell and module factories, testing units and material suppliers conduct more and more in-depth research on PID. [0003] Photovoltaic (PV) industry has undergone major changes, photovoltaic conversion efficiency has been continuously improved, an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08K5/00C08K5/5333C08K5/3492C08K5/57C08K5/14H01L31/048
CPCC08J5/18C08J2323/08C08J2423/08C08L23/0853C08L2201/08C08L2201/10C08L2203/16C08L2203/20C08L2205/03H01L31/0481C08L23/0815C08K5/00C08K5/5333C08K5/3492C08K5/57C08K5/14Y02E10/50
Inventor 孙影胡栋祁冀朱琛吕俊
Owner 嘉兴隆基乐叶光伏科技有限公司
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