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Grid wire electrode of a solar cell

A technology for solar cells and grid lines, applied in the field of solar cells, can solve the problems of high consumption of silver paste for grid lines, large shading area, insufficient charge collection ability, etc., and achieve the effect of reducing silver paste consumption and strong charge collection ability.

Active Publication Date: 2017-06-16
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the existing technical problems of high silver paste consumption, large shading area, and insufficient ability to collect charges, the present invention uses the structure imitating the veins of leaves to design solar cell grid patterns. The design idea is:

Method used

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  • Grid wire electrode of a solar cell
  • Grid wire electrode of a solar cell
  • Grid wire electrode of a solar cell

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Embodiment Construction

[0029] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be noted that this embodiment is only used to illustrate the present invention and is not intended to limit the content of the present invention. After reading the present invention, those skilled in the art will fall within the appended rights of this application to the modifications of various equivalent forms of the present invention. limited by requirements.

[0030] In the existing solar cell technology, whether it is a main grid line or a thin grid line, the shape of the electrode is a strip-shaped strip with a constant width. The difference of the present invention is that the shape of the grid line is based on the veins of the leaves, which can be It is the graph of the actual leaf veins, or it can be a grid line graph derived from the leaf veins, such as: bands of uneven thickness, triangles, curved bands, etc. For the thin gr...

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Abstract

The invention discloses a grid line electrode of a solar cell. The shape of the electrode is similar to a vein; the grid line electrode is divided into a plurality of grid lines; width design of the grid lines is determined according to magnitude distribution of photo-generated current flowing though the surface of the solar cell; the grid lines with large flowing current are correspondingly wide; and the grid lines with small flowing current are correspondingly narrow. The vein-shaped grid line electrode can maximize the collection and conduction efficiency of photocurrent of the solar cell; shading areas of the grid lines and consumption of silver paste for preparing the electrode are reduced; the efficiency of the solar cell is improved effectively; and the production cost is lowered.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a grid line electrode of a solar cell. Background technique [0002] The solar energy technology of crystalline silicon is becoming more and more perfect day by day. High efficiency and low cost are the goals that major manufacturers have been pursuing, and it is also the main driving force for various new technologies in research and development. A great deal of research effort has been devoted to reducing production costs and improving cell efficiency. [0003] In solar cell technology, the grid electrode is an important factor for the efficiency of imaging cells and modules. The grid lines on the surface of the battery are designed to maximize the collection of photogenerated charges in the battery and improve the efficiency of the battery. Therefore, through the optimal design of the grid line structure pattern, reducing the use of slurry, reducing production costs and reducing th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0224
CPCH01L31/022433Y02E10/50
Inventor 张亚非刘一剑李忠丽徐东
Owner SHANGHAI JIAO TONG UNIV
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