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Encapsulant for solar cells and solar cell module comprising the same

A technology for solar cells and packaging materials, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as yellowing of packaging materials, and achieve the effects of excellent moisture resistance, minimal output drop, and excellent durability.

Inactive Publication Date: 2018-10-02
SKC ECO SOLUTIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the hydrolysis-resistant agent induces yellowing of the encapsulation material

Method used

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  • Encapsulant for solar cells and solar cell module comprising the same
  • Encapsulant for solar cells and solar cell module comprising the same
  • Encapsulant for solar cells and solar cell module comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Embodiment 1. Manufacture of packaging material

[0087] 0.01 weight part of magnesium oxide A was compounded with respect to 100 weight part of ethylene-vinyl acetate copolymers, and the mixture was produced. Then, 1.0 parts by weight of a bridging agent and 1.0 parts by weight of a bridging auxiliary agent were prepared to manufacture an encapsulating material composition.

[0088] The encapsulation material composition was applied to a T-Die extrusion process at 100° C. to produce an encapsulation material with a thickness of 500 μm.

Embodiment 2～9 and comparative example 1～4

[0090] As shown in Table 1 below, except for changing the type and content of magnesium oxide, the encapsulating material was produced by the same method as in Example 1.

Embodiment 10

[0092] At 130°C, 0.5 parts by weight of magnesium oxide B was mixed with 100 parts by weight of ethylene-vinyl acetate copolymer to prepare a masterbatch, and the masterbatch and ethylene-vinyl acetate copolymer were put into each at a weight ratio of 1:10. ingredients and mixed at 85°C to make a mixture. Then, 1.0 parts by weight of a bridging agent and 1.0 parts by weight of a bridging auxiliary agent were added and mixed to manufacture an encapsulating material composition.

[0093] The encapsulation material composition was applied to a T-Die extrusion process at 100° C. to produce an encapsulation material with a thickness of 500 μm.

[0094] 【Table 1】

[0095]

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Abstract

Embodiments relate to an encapsulant for solar cells and a solar cell module comprising the same. The encapsulant for solar cells is excellent in moisture resistance and durability since it adsorbs acetic acid that is generated from an ethylene-vinyl acetate copolymer. Therefore, the solar cell module comprising the encapsulant for solar cells can minimize a reduction in the power output even whenit is exposed to the exterior for a long period of time.

Description

technical field [0001] The embodiment relates to a solar cell encapsulating material that is excellent in durability and moisture resistance and can minimize a drop in output of a solar cell, and a solar cell module including the same. Background technique [0002] Ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer) is widely used as a packaging material for solar cell modules. However, when the ethylene-vinyl acetate copolymer is exposed to the outside for a long period of time, there is a problem of generation of acetic acid due to hydrolysis. In particular, there is a problem that the acetic acid generated at this time corrodes the electrodes of the high-energy battery module and shortens the life of the high-energy battery module. Therefore, many researchers have devoted themselves to research on the ability to suppress the production of acetic acid from ethylene-vinyl acetate copolymers. [0003] As the most fundamental solution, a method has been prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K3/22C08K5/14C08K5/3492H01L31/048H01L31/049
CPCC08K3/22C08K5/14C08K5/34924C08K2003/222C08K2201/014C08L2203/204C08L2203/206H01L31/0481H01L31/049C08L23/0853Y02E10/50C08K2201/006
Inventor 金建旭韩权炯
Owner SKC ECO SOLUTIONS CO LTD