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Method and device for reducing fragmentation rate by chain type texturing for multicrystalline solar cells

A technology of solar cells and fragmentation rate, which is applied in the manufacture of circuits, electrical components, final products, etc., to achieve the effect of reducing the incentives of silicon fragments

Inactive Publication Date: 2010-02-03
CHINA UNITED CLEANING TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art structure, the present invention provides a method and device for chain-type texturing of polycrystalline solar cells to reduce the fragmentation rate, which solves this problem very well

Method used

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  • Method and device for reducing fragmentation rate by chain type texturing for multicrystalline solar cells

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Embodiment 1

[0020] Embodiment 1: as figure 2 As shown, the solution adopted by the present invention has fewer stress points, and the force is more conducive to the central transmission of Wafer, easier to adjust the gap, and easier to process.

[0021] A method for chain-type texturing of polycrystalline solar cells to reduce fragmentation rate, in which limiting rollers are arranged in a direction perpendicular to the conveying direction of silicon wafers, and the limiting rollers can rotate freely around their own axes,

[0022] When the silicon wafer hits the roller, the friction generated will make the roller rotate around its own axis and move the silicon wafer to the direction of the conveying center line. Since the silicon wafer is equipped with limit rollers on both sides, no matter what the silicon wafer touches The limit roller on one side will make the silicon wafer move to the direction of the conveying center line, and play the role of automatic deviation correction.

[00...

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Abstract

The invention relates to a method and a device for reducing fragmentation rate by chain type texturing for multicrystalline solar cells, a driving roller and limiting rollers are designed in a split manner, and the design of the limiting rollers leads the stress direction of a silicon wafer to be conductive to centralized transmission of the silicon wafer; the limiting rollers are arranged in thedirections which are vertical to the transmission direction of the silicon wafer, each limiting roller freely rotates around a shaft line thereof, when the silicon wafer touches the rollers, the generated friction force leads each roller to rotate around the shaft line thereof and leads the silicon wafer to move to a central line of the transmission; as the limiting rollers are arranged on both sides of the silicon wafer, the silicon wafer can move to the direction of the central line of the transmission no matter which side of the limiting rollers are touched by the silicon wafer, thereby playing the role of automatic deviation correction. The device has the advantages that the device changes the integral design of a conveying roller and the limiting rollers of the original scheme, removes alternating shear stress generated by friction of the limiting rollers and the silicon wafer, reduces an incentive of fragmentation of the silicon wafer and reduces the fragmentation rate to be within 2 per mill.

Description

technical field [0001] The invention relates to a method and device for reducing the fragmentation rate of polycrystalline solar cells by chain texturing, which is a transmission scheme for silicon chips in the chain texturing process of polycrystalline solar cells, and belongs to the field of processing and manufacturing of solar cells . Background technique [0002] The existing silicon wafer transmission scheme in the chain texturing process of polycrystalline solar cells uses direct positioning on rollers to limit the transmission of silicon wafers. Shearing force; due to long-term work and serious wear and tear, the shearing force increases and the fragmentation rate of silicon wafers increases. Contents of the invention [0003] In order to overcome the deficiencies of the prior art structure, the present invention provides a method and device for chain-type texturing of polycrystalline solar cells to reduce fragmentation rate, which well solves this problem. [00...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 孙良欣刘烨
Owner CHINA UNITED CLEANING TECH BEIJING
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