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Solar cell backboard and manufacturing method thereof

A technology of solar cells and manufacturing methods, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., can solve the problems of short service life, poor durability of the backplane, poor mechanical properties of the backplane, etc., so as to improve the service life, Improved peel strength and low cost

Active Publication Date: 2018-05-01
YANGZHOU BENSE LIGHTING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Prior Art Document 1 (CN102610679A) discloses a three-layer solar cell backsheet, which has a simple structure and uncomplicated production process, but there are also major problems with this backsheet: first, the backsheet The peeling strength of the board is low, and it cannot adapt to the complex use environment; secondly, the durability of this kind of backboard is poor, and the service life is short; in addition, the mechanical properties of this kind of backboard are poor
However, PEI is expensive, and the price of high-quality PEI raw materials is hundreds of thousands of yuan per ton.
As a result, the solar battery back sheet of prior art document 2 cannot be used commercially
Moreover, the thickness of the backsheet in the prior art document 2 is still relatively thick, which does not conform to the design concept of lightweight solar cells

Method used

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  • Solar cell backboard and manufacturing method thereof
  • Solar cell backboard and manufacturing method thereof
  • Solar cell backboard and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The solar cell backsheet includes from bottom to top: the bottom inorganic weather-resistant layer, the first polymer weather-resistant layer, the second polymer weather-resistant layer, the first structural reinforcement layer, the second structural reinforcement layer, the third structural reinforcement layer, the Three polymer weather-resistant layers, the fourth polymer weather-resistant layer and the top inorganic weather-resistant layer, wherein, at 150-200°C, the viscosity of the first polymer weather-resistant layer is greater than the viscosity of the second polymer weather-resistant layer, and the second polymer The viscosity of the weather-resistant layer is greater than that of the first structurally enhanced layer, and the viscosity of the first structurally enhanced layer is greater than that of the second structurally enhanced layer. At 150-200°C, the viscosity of the fourth polymer weather-resistant layer is greater than the viscosity of the third polymer...

Embodiment 2

[0026]The solar cell backsheet includes from bottom to top: the bottom inorganic weather-resistant layer, the first polymer weather-resistant layer, the second polymer weather-resistant layer, the first structural reinforcement layer, the second structural reinforcement layer, the third structural reinforcement layer, the Three polymer weather-resistant layers, the fourth polymer weather-resistant layer and the top inorganic weather-resistant layer, wherein, at 150-200°C, the viscosity of the first polymer weather-resistant layer is greater than the viscosity of the second polymer weather-resistant layer, and the second polymer The viscosity of the weather-resistant layer is greater than that of the first structurally enhanced layer, and the viscosity of the first structurally enhanced layer is greater than that of the second structurally enhanced layer. At 150-200°C, the viscosity of the fourth polymer weather-resistant layer is greater than the viscosity of the third polymer ...

Embodiment 3

[0028] The solar cell backsheet includes from bottom to top: the first polymer weather-resistant layer, the second polymer weather-resistant layer, the first structural reinforcement layer, the second structural reinforcement layer, the third structural reinforcement layer, the third polymer weather-resistant layer, Fourth polymer weathering layer. All the other conditions and parameters are the same as in Example 1.

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Abstract

The present invention provides a solar cell backboard. The solar cell backboard comprises in order from bottom to top: a ground layer inorganic matter weather-proof layer, a first polymer weather-proof layer, a second polymer weather-proof layer, a first structure enhancement layer, a second structure enhancement layer, a third structure enhancement layer, a third polymer weather-proof layer, a fourth polymer weather-proof layer and a top layer inorganic matter weather-proof layer, wherein the thickness of the first polymer weather-proof layer is larger than the thickness of the second polymerweather-proof layer, the thickness of the fourth polymer weather-proof layer is larger than the thickness of the third polymer weather-proof layer, the thicknesses of the first structure enhancementlayer, the second structure enhancement layer and the third structure enhancement layer are the same. The solar cell backboard is low in cost, good in weatherability, high in endurance and good in mechanical properties.

Description

technical field [0001] The invention provides a multilayer film and a manufacturing method thereof, in particular, a solar cell backboard and a manufacturing method thereof. Background technique [0002] Solar cells generally include the following parts: 1) Toughened glass: its function is to protect the main body of power generation (such as battery sheet); 2) EVA: EVA is used to bond and fix toughened glass and power generation body (such as battery sheet), transparent EVA material The advantages and disadvantages of solar cells directly affect the life of the components; 3) battery sheet: its main function is to generate electricity, and the mainstream of the main power generation market is crystalline silicon solar cells and thin film solar cells, both of which have their own advantages and disadvantages; 4) backplane , the backplane is required to be sealed, insulated, waterproof, with good mechanical properties, and aging resistance (generally, materials such as TPT an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049H01L31/18
CPCH01L31/049H01L31/1876Y02E10/50Y02P70/50
Inventor 苏彤
Owner YANGZHOU BENSE LIGHTING TECH CO LTD
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