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High-water-resistance backboard for solar battery assembly

A solar cell and module technology, applied in electrical components, circuits, photovoltaic power generation, etc., can solve the problems of water blocking backplane safety performance not guaranteed, components short circuit, etc., and achieve the effect of good weather resistance and low water permeability

Active Publication Date: 2015-10-07
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aluminum foil in this solution is a conductive material, and the partial discharge of the backplane will cause the risk of short circuit of the module
Therefore, the safety performance of this type of water-blocking backplane cannot be guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The formula of the olefin copolymer layer is as follows: in parts by mass, 100 parts of VA content is 30% ethylene-vinyl acetate copolymer (U.S. DuPont), add 1 part of super absorbent resin AQUA KEEP SA60S (Sumitomo Corporation of Japan), 0.2 parts of cross-linking agent tert-butyl peroxyisopropyl carbonate (Bailingwei Technology Co., Ltd.), 0.2 parts of antioxidant tris(2,4,-di-tert-butylphenyl) phosphite (Tianda Tianhai Technology Development Co., Ltd. company), 0.1 part of UV absorber 2-hydroxy-4-n-octyloxybenzophenone (Nanjing Zhonghesheng Technology Co., Ltd.), 0.5 part of light stabilizer sebacic acid bis-2,2,6,6- Tetramethylpiperidinol ester (Shanghai Yanjia Plastic Chemical Co., Ltd.), and mix well. The mixture was blended and extruded in an extruder, and the temperature was controlled at 90°C. After extrusion, it was cast, cooled, cut, and rolled to obtain an inner film layer with a thickness of 500 μm.

[0037]The formula of the fluorine-containing resin weat...

Embodiment 2

[0041] The formula of the olefin copolymer bonding layer is as follows: in parts by mass, 100 parts of VA content is 20% ethylene-vinyl acetate copolymer (U.S. DuPont), add 10 parts of super absorbent resin polyvinyl alcohol (Nippon Synthetic Chemical Co., Ltd. ), 0.5 parts of cross-linking agent tert-butyl peroxyisopropyl carbonate (Bailingwei Technology Co., Ltd.), 1.2 parts of antioxidant 2,2'-methylene-bis-(4-ethyl-6-tert-butyl Phenol) (Shanghai Ruiding Chemical Company), 0.1 part of UV absorber 2,2'-dihydroxy-4,4'-dimethoxybenzophenone (Nanjing Zhonghesheng Technology Co., Ltd.), 0.1 part of hindered amine Light stabilizer bis-1-decaneoxy-2,2,6,6-tetramethylpiperidin-4-ol sebacate and mix well. The mixture was blended and extruded in an extruder, and the temperature was controlled at 90°C. After extrusion, it was cast, cooled, cut, and rolled to obtain an inner film layer with a thickness of 200 μm.

[0042] The formula of the fluorine-containing resin weather-resistant ...

Embodiment 3

[0046] The formulation of the olefin copolymer bonding layer is as follows: in parts by mass, in 100 parts of ethylene-octene copolymer (DuPont, USA), add 5 parts of super absorbent resin SA60N (Sumitomo, Japan), 5 parts of crosslinking agent 1- Bis(tert-butyl peroxide)-3,3,5-trimethylcyclohexane (Bailingwei Technology Co., Ltd.), 2 parts of antioxidant 2,2'-methylene-bis-(4-ethyl- 6-tert-butylphenol) (Shanghai Ruiding Chemical Company), 0.5 parts of UV absorber 2,2'-dihydroxy-4,4'-dimethoxybenzophenone (Nanjing Zhonghesheng Technology Co., Ltd.) , 0.5 parts of hindered amine light stabilizer 3,5-di-tert-butyl-4-hydroxy-hexadecyl benzoate and mix well. The mixture was blended and extruded in an extruder, and the temperature was controlled at 120°C. After extrusion, it was cast, cooled, cut, and rolled to obtain an inner film layer with a thickness of 300 μm.

[0047] The formula of fluorine-containing resin weather-resistant layer is as follows: in parts by mass, in 100 parts...

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PUM

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Abstract

The invention discloses a high-water-resistance backboard for a solar battery assembly, which comprises an olefin copolymer layer, a bonding layer, a polyester base layer and a fluorine-containing weather resistant layer. According to the invention, the backboard is enabled to have excellent moisture blocking performance through adding super absorbent resin (SAP) to the olefin copolymer layer, thereby being capable of effectively reducing occurrence of a PID (Potential Induced Degradation) phenomenon in the assembly. The high-water-resistance backboard provided by the invention for the solar battery assembly has the advantages of good weather resistance, high bonding strength, good water blocking performance, low cost and the like, and can be widely applied to packaging of the solar battery assembly.

Description

technical field [0001] The invention relates to a high-resistance water back sheet for a solar battery module. Background technique [0002] PID (Potential Induced Degradation, Potential-Induced Decay) phenomenon refers to the degradation phenomenon that occurs when many solar panels (solar battery modules) are connected in series in a megawatt-level photovoltaic power station and run at high voltage, resulting in a sharp drop in power generation as a feature. [0003] According to the data of photovoltaic cell module manufacturers and research institutions, the PID effect is closely related to the composition of components, packaging materials, ambient temperature, humidity and voltage. [0004] The use of a high-resistance water backplane can reduce water vapor from entering the module, and can effectively suppress the occurrence of PID phenomenon. Existing high-resistance water-resistance backsheets generally adopt aluminum foil coating on PET to obtain extremely low wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049
CPCY02E10/50
Inventor 梅云宵林维红李江周光大林建华
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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