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Manufacturing method of insulating strip for solar cell assembly

A technology of solar modules and insulating strips, which is applied in the field of packaging materials, can solve problems such as glass falling off and affecting the stability of modules, and achieve the effect of ensuring bonding force and good insulation performance

Active Publication Date: 2019-02-01
扬州市众和同盛包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In solar cell modules, backplane insulating strips are usually used to isolate the positive and negative poles of bus bars, but when insulating strips are used, the air side of the backplane insulating strips cannot produce a good bonding effect with EVA, so the components are partially areas where there is a risk of glass breaking off and, more seriously, compromising the stability of the component

Method used

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  • Manufacturing method of insulating strip for solar cell assembly
  • Manufacturing method of insulating strip for solar cell assembly
  • Manufacturing method of insulating strip for solar cell assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The first process:

[0049] (1) Substrate unwinding: release the milky white PET Mylar sheet film through the unwinding equipment;

[0050] (2) Apply high-frequency and high-voltage electricity to the corona treatment equipment to make it discharge to generate corona sparks;

[0051] (3) corona treatment is carried out to the inner side of the milky white PET mylar sheet film released in step 1 with the corona spark in step 2, so that the corona value of the treated surface reaches 52 dynes;

[0052] (4) the ethylene copolymer EVA resin particles are melted and casted by an extruder to form a transparent casting film;

[0053] (5) The corona-treated milky white PET Mylar sheet film in step 3 and the EVA cast film in step 4 pass through the composite equipment together. At this time, the EVA cast film and milky white PET Mylar sheet film were corona treated. Combination of one side, EVA cast film on the inside, and milky white PET Mylar film on the outside, to obtain c...

Embodiment 2

[0076] The first process:

[0077] (1) Substrate unwinding: release the milky white PET Mylar sheet film through the unwinding equipment;

[0078] (2) Apply high-frequency and high-voltage electricity to the corona treatment equipment to make it discharge to generate corona sparks;

[0079] (3) corona treatment is carried out to the inner side of the milky white PET mylar sheet film released in step 1 with the corona spark in step 2, so that the corona value of the treated surface reaches 52 dynes;

[0080] (4) the ethylene copolymer EVA resin particles are melted and casted by an extruder to form a transparent casting film;

[0081] (5) The corona-treated milky white PET Mylar sheet film in step 3 and the EVA cast film in step 4 pass through the composite equipment together. At this time, the EVA cast film and milky white PET Mylar sheet film were corona treated. Combination of one side, EVA cast film on the inside, and milky white PET Mylar film on the outside, to obtain c...

Embodiment 3

[0104] The first process:

[0105] (1) Substrate unwinding: release the milky white PET Mylar sheet film through the unwinding equipment;

[0106] (2) Apply high-frequency and high-voltage electricity to the corona treatment equipment to make it discharge to generate corona sparks;

[0107] (3) corona treatment is carried out to the inner side of the milky white PET mylar sheet film released in step 1 with the corona spark in step 2, so that the corona value of the treated surface reaches 52 dynes;

[0108] (4) the ethylene copolymer EVA resin particles are melted and casted by an extruder to form a transparent casting film;

[0109] (5) The corona-treated milky white PET Mylar sheet film in step 3 and the EVA cast film in step 4 pass through the composite equipment together. At this time, the EVA cast film and milky white PET Mylar sheet film were corona treated. Combination of one side, EVA cast film on the inside, and milky white PET Mylar film on the outside, to obtain c...

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Abstract

The invention belongs to the technical field of packaging materials and discloses a manufacturing method of an insulating strip for a solar cell assembly. The manufacturing method of the insulating strip for the solar cell assembly comprises the steps that a milky white PET mylar is uncoiled, corona treatment is conducted on the inner side of the milky white PET mylar, EVA cast film compounding treatment is conducted, corona treatment is conducted, and after static electricity is eliminated, a compound B is obtained through coiling; the compound B is uncoiled, corona treatment and EVA cast film compounding treatment are conducted on the outer side of the compound B, then a compound C is obtained, corona treatment is conducted, and after static electricity is eliminated, the insulating strip for the solar cell assembly is obtained through coiling. According to the manufacturing method of the insulating strip for the solar cell assembly, through the corona treatment conducted on the inner side of the base material, the surface of the base material can form polar carbonyl, and under the strong oxidizing property of ozone, the EVA cast film can form polar groups; without an AC agent,the binding force between the base material and the EVA cast film can also be guaranteed; and the insulating strip has good insulating performance and can effectively insulate a multi-layer circuit.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, in particular to a method for preparing insulating strips for solar modules. Background technique [0002] In solar cell modules, backplane insulating strips are usually used to isolate the positive and negative poles of the bus bars, but when insulating strips are used, the air side of the backplane insulating strips cannot produce a good bonding effect with EVA, so the components are partially There is a risk of the glass breaking off in the area and, more seriously, affecting the stability of the component. In addition, the insulating strip will also be exposed to the continuous ultraviolet radiation of the sun. In the long-term actual use, with the continuous and slow infiltration of water vapor, the residue of the primer in the process of processing, the insulating strip will be exposed to ultraviolet radiation and water vapor. Slow failure changes will occur under the action of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01
CPCB29D7/01
Inventor 李云波童李洋
Owner 扬州市众和同盛包装材料有限公司
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