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Insulating layer production method, insulating layer, conductive backboard production method and conductive backboard

A production method and conductive backplane technology, applied in the field of solar photovoltaics, can solve the problems of complex manufacturing process, high cost, and unreliable connection of the insulating layer, and achieve the goal of avoiding pollution of the film layer, avoiding pollution, and improving precision and production efficiency Effect

Pending Publication Date: 2020-10-30
LONGI SOLAR TECH (TAIZHOU) CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0005] The invention provides an insulating layer production method, an insulating layer, a conductive backplane production method and a conductive backplane, aiming to solve the problems of complex manufacturing process, high cost and unreliable connection of the insulating layer

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  • Insulating layer production method, insulating layer, conductive backboard production method and conductive backboard
  • Insulating layer production method, insulating layer, conductive backboard production method and conductive backboard
  • Insulating layer production method, insulating layer, conductive backboard production method and conductive backboard

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Embodiment Construction

[0026] The inventors have found that currently in the manufacturing process of EPE, it is necessary to carry out surface treatment to PET, such as coating a primer coating, etc., to realize the bonding between PET and EVA, and then compound EVA on both sides of PET through the coating process, and manufacture The process is complex, which is not conducive to reducing costs. At the same time, EPE is prone to creep and deformation problems, which makes the accuracy of opening and alignment low, resulting in unreliable connections. In the prior art, a separate EVA is used as the insulating layer. Since EVA is an elastic body, the dimensional stability is poor, and it is easy to be deformed under the action of external force and heat during the process of opening holes and laying materials, so that it cannot be guaranteed. The accuracy of opening and alignment makes the connection unreliable.

[0027] Begin to introduce the embodiment of the present invention below:

[0028] ref...

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Abstract

The invention provides an insulating layer production method, an insulating layer, a conductive backboard production method and a conductive backboard, and relates to the technical field of photovoltaics. The insulating layer production method comprises the following steps: providing a release layer; arranging an adhesive film layer on one side of the release layer to obtain an insulating precursor layer; and forming an open pore at least penetrating through the thickness of the adhesive film layer in the insulating precursor layer to form an insulating layer with the open pore. The release layer has good dimensional stability and certain strength, therefore, the insulating precursor layer has good dimensional stability and certain strength; the release layer can fully limit creep, deformation and the like of the adhesive film layer in the tapping process; the deviation of an adhesive film in the tapping process is reduced; the hole size and position of the obtained adhesive film layerare accurate, the alignment and connection reliability can be improved, repeated re-punching is not needed, the precision and production efficiency can be improved, the production cost is reduced, only the adhesive film layer needs to be arranged on one side of the release layer, the release layer needs to be removed after hole forming, and the process is simple.

Description

technical field [0001] The invention relates to the field of solar photovoltaic technology, in particular to an insulating layer production method, an insulating layer, a conductive backplane production method and a conductive backplane. Background technique [0002] The conductive backsheet is used to electrically interconnect each solar cell to form a battery string, and further form a photovoltaic module to increase the effective light-receiving area and increase the voltage output, so it is widely used. [0003] To improve connection reliability and avoid short circuits, the insulating layer in the conductive backplane is critical. There are mainly two types of insulating layers at present, namely EVA (ethylene-vinyl acetate copolymer) / PET (polyethylene terephthalate) / EPE corresponding to EVA, or EVA alone. [0004] However, the above two insulating layers of EPE and EVA are prone to creep and deformation, and at the same time, the manufacturing process of EPE is compli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/05C09J7/10C09J7/29C09J7/30C09J123/08C09J129/14
CPCH01L31/0512C09J7/10C09J7/29C09J7/30C09J123/0853C09J123/0815C09J129/14C09J2203/322C09J2203/33C09J2400/163Y02E10/50
Inventor 陈军司朋飞王兆伟李华刘继宇
Owner LONGI SOLAR TECH (TAIZHOU) CO LTD
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