Crystalline silicon solar cell string splicing method and module

A technology of crystalline silicon solar cells and solar cells, applied in electrical components, circuits, photovoltaic power generation, etc., to achieve the effects of improving conversion efficiency, reducing hidden cracks, and reducing welding stress

Pending Publication Date: 2020-01-10
YELLOW RIVER PHOTOVOLTAIC IND TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: solve the problem of how to increase the utilization rate of sunlight at the welding strip without increasing the cost

Method used

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  • Crystalline silicon solar cell string splicing method and module
  • Crystalline silicon solar cell string splicing method and module
  • Crystalline silicon solar cell string splicing method and module

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Experimental program
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Embodiment Construction

[0030] In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings.

[0031] A method for splicing crystalline silicon solar cell strings, comprising the following steps:

[0032] Such as figure 1 As shown, the crystalline silicon solar cells are first prepared according to the crystalline silicon solar cell printing graphics scheme; the crystalline silicon solar cell string welding parameters are set on the operation interface of the automatic stringer, and the various systems on the stringer are started to start welding. First place the front conductive material of the first two crystalline silicon solar cells 3 (i.e., the triangular ribbon) on the soldering platform, and then place the first crystalline silicon solar cell 3 on the triangular ribbon face down to ensure that the crystalline silicon solar cell Align the main grid of 3 with the position of the triangular ribbon, then place the condu...

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Abstract

The technology of splicing two adjacent cells is adopted, the distance between the solar cells in the module is shortened, the blank in the module is reduced in the module packaging of the same specification, the use number of the cells is increased, and the conversion efficiency of the module is greatly improved; due to the use of a triangular welding strip on the front surface of the cell, the sunlight absorptivity of the crystalline silicon solar cell is effectively improved, and the short circuit current of the cell is improved; due to the adoption of a flat welding strip on the back surface of the cell, the stress of the adjacent cells during series connection is reduced, and the subfissure and fragmentation rate of the solar cells in series connection and lamination processes are reduced. In a word, when the method is used for packaging the crystalline silicon solar cell module, the method greatly reduces the stress generated by the heating of the cell in the packaging process ofthe module while improving the power, conversion efficiency and production efficiency of the module and reducing the preparation cost of the module, reduces the probability of subfissure and fragmentation, prolongs the life cycle of the crystalline silicon solar cell module, and improves the reliability of the module.

Description

technical field [0001] The invention relates to a splicing method and components of crystalline silicon solar battery strings, belonging to the technical field of crystalline silicon solar battery manufacturing. Background technique [0002] Technological innovation is the most effective way to promote efficiency, cost reduction and quality improvement in the photovoltaic industry. In the past two years, innovative packaging technologies such as half-cut technology, double-glass technology, multi-busbar technology and laminated technology have exploded in the module preparation process. In particular, stacking technology has greatly reformed the interconnection technology of components, making full use of the chip spacing in the original packaging method, and the effective use of batteries and other packaging materials has reached a new level. [0003] At present, the interconnection methods of cells in the preparation of crystalline silicon solar modules can be broadly div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/048H01L31/05
CPCH01L31/048H01L31/0508H01L31/188Y02E10/50Y02P70/50
Inventor 杨振英卢刚郑璐马冀超杨紫琪雷鸣宇陈燕海建平
Owner YELLOW RIVER PHOTOVOLTAIC IND TECH CO LTD
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