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Overlapping method of sliced ​​cells

An overlapping method and cell technology, which is applied to circuits, electrical components, photovoltaic power generation, etc., can solve the problems of increased hidden crack rate at the overlap of battery chips, and solve the problem of easily occurring hidden cracks, reduce the hidden crack rate, and reduce Effect of possibility of deformation and cracking

Active Publication Date: 2021-10-22
LONGI SOLAR TECH (TAIZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the cells are overlapped and welded, the rate of hidden cracks at the overlap of the cells increases during the lamination process.

Method used

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  • Overlapping method of sliced ​​cells
  • Overlapping method of sliced ​​cells

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Embodiment Construction

[0013] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings.

[0014] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0015] Please refer to figure 1 and 2 , the method for overlapping sliced ​​battery slices of the present invention includes the following steps:

[0016] The welding strips 13 and the second cut cells 14 are sequentially stacked on the first c...

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Abstract

The present application discloses a method for overlapping sliced ​​cells, which includes the following steps: sequentially stacking ribbons and second sliced ​​cells on a first sliced ​​cell, so that the first sliced ​​cell and the second sliced ​​cell are There is an overlapping area in the orthographic projection on the plane where the ribbon is located, wherein the ribbon is located between the first sliced ​​cell and the second sliced ​​cell, the non-cut surface of the first sliced ​​cell and the cut surface of the second sliced ​​cell The surface is located in the overlapping area, and the negative electrode of the first sliced ​​cell and the negative electrode of the second sliced ​​cell face up, which can reduce the possibility of deformation and cracks of the sliced ​​cell during the lamination process, and reduce the cracks of the sliced ​​cell Rate.

Description

technical field [0001] The present invention generally relates to the field of photovoltaics, in particular to the field of cell interconnection, and in particular to a method for overlapping sliced ​​cells. Background technique [0002] At present, half-cell photovoltaic cells are cut into half-cells by a dicing machine. The cutting part of the cell is the cutting surface, and the opposite surface is the non-cutting surface. Photovoltaic half-cell modules are products connected by welding strips. The welding strips extend from the front of the cell to the back of the adjacent cell to form a battery string in series, and set a certain spacing between the connected cells (the spacing between the cells>0mm) . There are photovoltaic half-cell modules with chip spacing in the industry. During welding, the welding tape extends from the front of the half-chip to the back of the adjacent chip. The welding tape has both cutting and non-cutting surfaces at the end of the front. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/05
CPCH01L31/0504H01L31/188Y02E10/50Y02P70/50
Inventor 李明明冯均
Owner LONGI SOLAR TECH (TAIZHOU) CO LTD
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