Welding method and device of IBC muti-grid line solar cell

A technology for solar cells and welding methods, applied in auxiliary devices, welding equipment, welding equipment and other directions, can solve the problems of high fragmentation rate and increased fragmentation rate of contact welding method.

Active Publication Date: 2017-06-13
HANS LASER TECH IND GRP CO LTD +1
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Problems solved by technology

However, with the continuous thinning of silicon wafers and the continuous increase of battery grid lines, the grid lines are getting thinner and thinner, and the debris rate of the contact welding method is increasing
[0003] Therefore, the traditional contact IBC (Inter digitated Back Contact, interdigitated back contact) multi-grid solar cell welding method has a high fragmentation rate

Method used

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  • Welding method and device of IBC muti-grid line solar cell

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Embodiment Construction

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "or / and" includes any and all combinations of one or more of ...

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Abstract

The invention provides a welding method and a device of an IBC muti-grid line solar cell. A welding pattern of the IBC muti-grid line solar cell is obtained; a welding path is determined according to the welding pattern; the welding path and the welding pattern include welding points; a welding mode and welding parameters corresponding to the welding mode are obtained; corresponding laser directions are determined according to position information of each welding point of the welding path, and a laser welding speed and a light emitting state are determined according to the welding parameters; and a laser is controlled to weld the IBC muti-grid line solar cell according to the laser welding speed, the light emitting state and the laser direction of each welding point of the welding path. The laser is controlled to weld the IBC muti-grid line solar cell; as the welding mode of the laser is a non-contact welding mode, the welding method and device of the IBC muti-grid line solar cell are low in fragment rate and small in welding area; and the obtained IBC muti-grid line solar cell is low in contact resistance.

Description

technical field [0001] The invention relates to the field of production of solar battery components, in particular to a welding method and device for IBC multi-grid solar battery sheets. Background technique [0002] Solar cells need to be connected by ribbons to form battery components, and the traditional welding method uses contact welding. However, with the continuous thinning of the silicon wafer and the continuous increase of battery grid lines, the grid lines are getting thinner and thinner, and the fragmentation rate of the contact welding method is constantly increasing. [0003] Therefore, the traditional contact IBC (Inter digitated Back Contact, interdigitated back contact) multi-grid solar cell welding method has a high fragmentation rate. Contents of the invention [0004] Based on this, it is necessary to provide a welding method and device for IBC multi-grid solar cells with low fragmentation rate. [0005] A welding method for an IBC multi-grid solar bat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K37/00B23K31/02
CPCB23K31/02B23K37/00
Inventor 刘照安梁娟朱太荣马如震唐泳高云峰
Owner HANS LASER TECH IND GRP CO LTD
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