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Solar cell panel assembly

A technology of solar panels and components, which is applied in the field of solar energy, can solve the problems of poor performance of solar cells, etc., and achieve the effect of improving performance and increasing contact area

Inactive Publication Date: 2014-01-29
YINGLI ENERGY CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a solar cell panel assembly to solve the problem that the solar cell panel assembly in the prior art has relatively poor service performance for cells with high sheet resistance

Method used

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Examples

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example 1

[0030] Example 1: The average square resistance is 90 ohms, the square resistance value range in a single silicon chip is 70 ohms-110 ohms, the total number of grid lines in the screen pattern is 100-110, and the number of grid lines in the central high square resistance area is 40 -50 wires, the grid line interval is 1.102-1.384mm, and the width is 30um-35um. The number of grid lines in the surrounding area is 50-60, the interval is 1.678-2.02mm, and the width is 35-45um.

example 2

[0031] Example 2: The average square resistance is 100 ohms, the square resistance value range in a single silicon chip is 80 ohms-120 ohms, the total number of grid lines in the screen pattern is 110-120, and the number of grid lines in the central high square resistance area is 50 -60 pieces, the interval is 0.915-1.102mm, and the width is 30um-35um. The number of grid lines in the surrounding area is 60-70, the interval is 1.435-1.678mm, and the width is 35-45um.

example 3

[0032] Example 3: The average square resistance is 110 ohms, the square resistance value range in a single silicon chip is 90 ohms-130 ohms, the total number of grid lines in the screen pattern is 110-130, and the number of grid lines in the central area is 60-70 , the interval is 0.783-0.915mm, and the width is 30um-35um. The number of grid lines in the surrounding area is 50-60, the interval is 1.678-2.02mm, and the width is 35-45um.

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Abstract

The invention provides a solar cell panel assembly. The solar cell panel assembly comprises a battery piece (10) and a plurality of grid lines (20) connected to the battery piece (10), the density of the grid lines (20) in the middle of the battery piece (10) is larger than that of the grid lines (20) on the edge of the battery piece (10), and the density of the grid lines (20) is the surface area of the grid lines (20) in a unit area on the battery piece (10). According to the technical scheme, the solar cell panel assembly effectively solves the problem that a solar cell panel assembly with a battery piece having high square resistance in the prior art is relatively poor in use performance.

Description

technical field [0001] The present invention relates to the technical field of solar energy, in particular to a solar cell panel assembly. Background technique [0002] As the price of solar cells gradually decreases, cost reduction has become one of the key tasks of various solar manufacturers. The main ways to reduce costs include reducing unit consumption of materials, reducing material prices, and improving battery efficiency. [0003] In the technology of reducing costs by improving the conversion efficiency of solar cells, there are five processes in the production process of polycrystalline cells, specifically bocaic acid texturing, phosphorus diffusion, PN junction isolation, PECVD deposition of anti-reflection film, front and back electrode printing and sintering. The above processes respectively prepare the uneven suede structure with anti-reflection effect, prepare a PN junction with a certain depth, remove the N-type layer around and on the back to achieve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/042
CPCY02E10/50H01L31/022425H01L31/02008
Inventor 孙小娟马桂燕安海娇史金超
Owner YINGLI ENERGY CHINA
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