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A positive electrode pattern of a multi-main grid solar cell

A technology of solar cells and positive electrodes, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of large amount of silver paste used, low photoelectric conversion efficiency, etc., and achieve the effect of reducing grid breakage

Pending Publication Date: 2019-01-18
北京太阳能电力研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing solar cells have the problems of large amount of silver paste and low photoelectric conversion efficiency

Method used

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  • A positive electrode pattern of a multi-main grid solar cell
  • A positive electrode pattern of a multi-main grid solar cell
  • A positive electrode pattern of a multi-main grid solar cell

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Experimental program
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Embodiment

[0033] Such as figure 1 with figure 2 As shown, the present invention provides a multi-busbar solar cell positive electrode pattern, including:

[0034] A plurality of busbar lines 1 are arranged at intervals and parallel to each other;

[0035] A plurality of first sub-grid lines 2 are arranged at intervals, and any first sub-grid line 2 is perpendicular to any main grid line 1 and connected to each other;

[0036] A plurality of asymptote lines 6, at least one asymptote line is provided at the junction of each main grid line 1 and each first sub-grid line 2, and the asymptote line and its corresponding main grid line 1 and first sub-grid line The gate lines 2 are all connected.

[0037] The thinning of the auxiliary grid line makes it easy to break the grid at the connection part between the main grid line 1 and the auxiliary grid line of the cell during the printing process and after sintering, resulting in a loss of efficiency.

[0038] In this solution, an asymptotic l...

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Abstract

The invention discloses a positive electrode pattern of a multi-main grid solar cell, comprising: a plurality of main grid lines which are parallel to each other; a plurality of first sub-gate lines,any one of the first sub-gate lines being perpendicular to and in contact with any one of the main gate lines; a plurality of asymptotes, at least one asymptote is arranged at the junction of each main gate line and each first sub-gate line, and the asymptote is connected with the corresponding main gate line and the first sub-gate line. The invention can reduce the production cost of the solar cell sheet, reduce the series resistance to the maximum extent, improve the photoelectric conversion efficiency of the solar cell sheet, and make the light receiving area of the solar cell sheet not begreatly affected.

Description

technical field [0001] The invention relates to the field of positive electrode design of solar cells in the photovoltaic industry. More specifically, the present invention relates to positive electrode patterns of multi-busbar solar cells. Background technique [0002] As an emerging energy industry, crystalline silicon solar cells have increasingly mature and perfect production technologies. Due to its safety, low pollution and renewability, solar photovoltaic has become a clean energy necessary for social development. With the continuous promotion of the solar photovoltaic industry, human beings have put forward higher and higher requirements for photovoltaic products. For example, the production cost of solar photovoltaic products, the power of module products, etc. In terms of material cost of crystalline silicon solar cells widely used at the present stage, silicon material accounts for about 60% to 70% of the material cost, and the usage of silver paste accounts fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/04
CPCH01L31/022433H01L31/04Y02E10/50
Inventor 张华灿房强王军赵钊
Owner 北京太阳能电力研究院有限公司
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