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Solar cell grid line structure and solar cell using the same

A solar cell and wire structure technology, applied in the field of solar cells, can solve the problems of immaturity of silver-coated copper, inability to discharge directly, and high processing cost, and achieve the effects of reducing preparation cost, ensuring efficiency, and reducing consumption of silver paste

Pending Publication Date: 2021-10-01
TRINASOLAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other methods of preparing electrodes include electroplating and silver-coated copper particles. However, electrodes prepared by electroplating are generally composed of Ni / Cu / Ag, which can reduce the consumption of silver. However, electroplating will produce a large amount of waste liquid, which contains A variety of cations and toxic organic substances cannot be discharged directly, and the treatment cost is also high
On this basis, the silver-clad copper technology is not yet mature and has not yet been applied industrially.

Method used

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  • Solar cell grid line structure and solar cell using the same
  • Solar cell grid line structure and solar cell using the same
  • Solar cell grid line structure and solar cell using the same

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Embodiment Construction

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some examples or embodiments of the present application, and those skilled in the art can also apply the present application to other similar scenarios. Unless otherwise apparent from context or otherwise indicated, like reference numerals in the figures represent like structures or operations.

[0024] As indicated in this application and claims, the terms "a", "an", "an" and / or "the" do not refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" and "comprising" only suggest the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list, and ...

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Abstract

The invention provides a solar cell grid line structure and a solar cell using the same, the solar cell grid line structure comprises a plurality of main grid lines which extend along a first direction and are arranged at intervals along a second direction, and a plurality of thin grid lines which extend along the second direction and are arranged at intervals along the first direction, the first direction is not parallel to the second direction, the plurality of main grid lines are electrically connected with the plurality of thin grid lines respectively, and each thin grid line is provided with a broken section between any two adjacent main grid lines. According to the solar cell grid line structure and the solar cell using the same, the silver paste consumption can be effectively reduced on the basis of ensuring the cell efficiency, and the preparation cost of the solar cell is reduced.

Description

technical field [0001] The invention mainly relates to the field of solar cells, in particular to a grid wire structure of a solar cell and a solar cell to which it is applied. Background technique [0002] Silver (Ag) has a low resistivity, can transport carriers efficiently, and has low resistance loss, and is widely used in solar cells and electronics industries. However, as a noble metal, Ag has limited reserves and high cost. In existing solar cells, the cost of Ag is about 70% of the cost of non-silicon. Therefore, whether the silver consumption can be reduced on the basis of ensuring battery performance is one of the main factors affecting the cost of photovoltaic power generation. [0003] Specifically, in solar cells, Ag is used as a metallized electrode to extract carriers and transport them to the external circuit. The specific process is to first grind silver into micro-nano particles, and then combine them with A viscous mixture of adhesives, solvents, additiv...

Claims

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Application Information

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IPC IPC(8): H01L31/0224H01L31/04
CPCH01L31/022425H01L31/04Y02E10/50
Inventor 胡匀匀刘宗涛刘志远徐冠超陈达明邹杨张学玲陈奕峰
Owner TRINASOLAR CO LTD
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