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Preparation method of battery piece for imbricate assembly

A cell and module technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of PN junction damage and low cell quality, and achieve the effect of improving efficiency, improving product yield, and avoiding chain effects.

Pending Publication Date: 2019-04-19
德运创鑫(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the purpose of this application is to propose a method for preparing solar cells used in shingled components to solve the technical problems of PN junction damage and low quality solar cells

Method used

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  • Preparation method of battery piece for imbricate assembly
  • Preparation method of battery piece for imbricate assembly
  • Preparation method of battery piece for imbricate assembly

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preparation example Construction

[0042] An embodiment of the present application provides a method for preparing solar cells for shingled modules, including: preparing photovoltaic cell chips in the deposition area of ​​silicon wafers through a preset mask and screen printing screen; wherein, the mask The film plate and the screen printing screen are respectively reserved with a barrier mechanism for forming an area to be cut on the silicon wafer; the area to be cut is cut on the silicon wafer to prepare a battery sheet for the shingled assembly.

[0043] Wherein, the photovoltaic cell chip prepared in the deposition area of ​​the silicon wafer can adopt various structures, for example, a heterojunction (HIT) structure with an intrinsic silicon thin layer, or a HIT improved structure, which is not specifically limited here.

[0044] In the embodiment of the present application, a photovoltaic cell chip is prepared in the deposition area of ​​the silicon wafer through a preset mask and a screen printing screen....

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Abstract

The invention discloses a preparation method of a battery piece for an imbricate assembly, and the method comprises the following steps: preparing a photovoltaic battery chip in a deposition area of asilicon wafer through a preset mask plate and a silk screen printing plate, wherein the mask plate and the screen printing plate are respectively reserved with a blocking mechanism used for forming ato-be-cut area on the silicon wafer; and cutting a cutting area of the silicon wafer to prepare the battery pieces for the imbricate assembly. According to the embodiment of the invention, a film isdeposited and the electrode is manufactured in the deposition area of the silicon wafer through the mask plate and the silk-screen printing plate, and the to-be-cut area is reserved, so that the to-be-cut area can be cut to obtain the battery pieces without PN junction damage, a high-quality piece source is provided for the imbrication assembly, and the efficiency of the imbrication assembly is further improved.

Description

technical field [0001] The present application relates to the technical field of photovoltaic modules, in particular to a method for preparing solar cells used in shingled modules. Background technique [0002] The shingling technology is to cut the traditional battery into multiple small pieces, and use conductive glue to stack and connect them in series. The solar cells used in the shingled modules currently on the market are usually made by cutting bad solar cells and good solar cells into small pieces by laser and then packaging them. However, due to defects such as chipped corners and edge collapse in bad cells, using bad cells as the source of shingled modules limits the improvement of module efficiency to a large extent; while using good cells as the source of shingled modules , although it can improve the efficiency of the module, the laser cutting process can easily cause damage to the PN junction of the cell, resulting in the production of defective silicon wafers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/043H01L31/0224
CPCH01L31/022425H01L31/043H01L31/1804H01L31/188Y02E10/547Y02P70/50
Inventor 龙永灯
Owner 德运创鑫(北京)科技有限公司