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Novel insulating back plate for solar photovoltaic cell

A technology of photovoltaic cells and solar energy, applied in photovoltaic power generation, circuits, electrical components, etc., can solve problems such as complicated processing and increased product costs, and achieve the effects of good integration, increased production capacity, and reduced costs

Inactive Publication Date: 2012-07-11
SUZHOU XINGFU NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current solar backsheet mainly has the following problems: an adhesive is used between the middle reinforcement layer and the inner E adhesive layer, which increases the product cost and cumbersome processing

Method used

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  • Novel insulating back plate for solar photovoltaic cell
  • Novel insulating back plate for solar photovoltaic cell

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Experimental program
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Embodiment 1

[0018] Structural reinforcement layer 1: polyethylene terephthalate film with a thickness of 250 μm

[0019] Weather-resistant layer 3: polyvinylidene fluoride film with a thickness of 25 μm

[0020] E Adhesive layer 4: Polyethylene particle co-extruded cast film, thickness 60 μm

[0021] Composite process: first, heat-composite the weather-resistant layer 1 on the surface of the side of the bonding layer 2 facing away from the structural reinforcement layer 1; then perform surface treatment on the other side of the structural reinforcement layer 1; at the same time, polyethylene particles, fluorine Auxiliaries and anti-aging agents are co-extruded and cast into a polyethylene film, the E adhesive layer 4; then the E adhesive layer 4 is thermally compounded on the other surface of the structural reinforcement layer 1.

[0022] The insulation backsheet for solar photovoltaic cells of the present invention, between the E adhesive layer and the structural reinforcement layer, do...

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Abstract

The invention discloses a novel insulating back plate for a solar photovoltaic cell, which comprises a structure enhancement layer, a bonding layer, a weather-proof layer and an E bonding layer, wherein the weather-proof layer is compounded on the surface that the bonding layer is back to one side of the structure enhancement layer; and the E bonding layer is directly bonded on the surface of the other side of the structure enhancement layer. The insulating back plate for the solar photovoltaic cell has the advantage that the E bonding layer is directly and thermally compounded with the structure enhancement layer without adhesive, and the combination is better; in a film-making process, the E bonding layer can be directly compounded with the structure enhancement layer so as to reduce cost and increase yield effectively.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic cells, in particular to an insulating backplane for solar photovoltaic cells. Background technique [0002] As known in the industry, the overall structure of a solar photovoltaic cell is roughly but not absolutely limited to include: frame body, solar photovoltaic glass installed on the frame body, battery sheet (also called silicon wafer or silicon plate) under the solar photovoltaic glass, Hot melt adhesive layer, junction box and insulating backplane. The sequence of solar cell encapsulation is: photovoltaic glass, hot melt adhesive layer, cell sheet, hot melt adhesive layer and insulating backplane. [0003] The insulating backsheet for solar photovoltaic cells (referred to as the solar backsheet) is located on the back of the solar panel, which protects and supports the battery sheet, and must have reliable insulation, water resistance, and aging resistance. [0004] The solar b...

Claims

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Application Information

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IPC IPC(8): H01L31/048B32B27/08B32B27/30B32B27/36B32B7/10H01L31/049
CPCY02E10/50
Inventor 吴立生
Owner SUZHOU XINGFU NEW ENERGY TECH