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Battery sheet slicing method

A battery sheet and slicing technology, applied in circuits, electrical components, sustainable manufacturing/processing, etc., can solve problems such as high current, low voltage of battery components, hot spot effect, etc., and achieve low current, high voltage, and slicing good quality effect

Pending Publication Date: 2021-04-02
WUXI AUTOWELL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the cell components formed by this cutting method have low voltage and high current, and high current will cause hot spot effect

Method used

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  • Battery sheet slicing method
  • Battery sheet slicing method
  • Battery sheet slicing method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0055] In this embodiment, the first cutting groove 1 is formed by cutting the battery sheet on the first slicing line A, including:

[0056]The battery sheet is cut along the first slicing line A by using a laser, and the first cutting groove 1 with a first preset depth extending from one end to the other end is formed on the battery sheet.

[0057] The second cutting groove 2 is formed by cutting the battery sheet on the second slicing line B, including;

[0058] Use a laser to cut the battery sheet along the second slicing line B at intervals to form at least two of the second cutting grooves 2 arranged at intervals;

[0059] The battery sheet is further split along the first cutting groove 1 and the second cutting groove 2 to form four sub-sections, including:

[0060] The battery sheet is heated along the second slicing line B by a laser, and the battery sheet is split along the second cutting groove 2 to form two slicing;

[0061] The battery sheet is broken off along ...

no. 2 approach

[0068] In this embodiment, the first cutting groove 1 is formed by cutting the battery sheet on the first slicing line A, including:

[0069] The battery sheet is cut along the first slicing line A by using a laser, and the first cutting groove 1 with a first preset depth extending from one end to the other end is formed on the battery sheet.

[0070] The second cutting groove 2 is formed by cutting the battery sheet on the second slicing line B, including;

[0071] The battery sheet is cut along the second slicing line B by a laser, and a second cutting groove 2 with a second preset depth extending from one end to the other end is formed on the battery sheet. The depth is less than the first preset depth. That is, the depth of the first cutting groove 1 is set to be able to easily break the battery sheet, and the depth of the second cutting groove 2 is set to be able to be further split along the second cutting groove 2 when the battery sheet is heated.

[0072] The battery...

no. 3 approach

[0080] In this embodiment, the first cutting groove 1 is formed by cutting the battery sheet on the first slicing line A, including:

[0081] A laser is used to cut the battery sheet along the first slicing line A at intervals to form at least two of the first cutting grooves 1 arranged at intervals.

[0082] The second cutting groove 2 is formed by cutting the battery sheet on the second slicing line B, including;

[0083] Use a laser to cut the battery sheet along the second slicing line B at intervals to form at least two of the second cutting grooves 2 arranged at intervals;

[0084] The battery sheet is further split along the first cutting groove 1 and the second cutting groove 2 to form four sub-sections, including:

[0085] The battery sheet is heated along the first slicing line A and the second slicing line B by a laser, and the battery sheet is split along the first cutting groove 1 and the second cutting groove 2 to form Four shards.

[0086] Wherein, in this em...

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PUM

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Abstract

The invention discloses a battery sheet slicing method, which comprises the following steps of: cutting a battery sheet on a first slicing line to form a first cutting groove; cutting the battery sheet on a second slicing line to form a second cutting groove, wherein the second slicing line is perpendicular to the first slicing line; and splitting the battery sheet into four sub-sheets along the first cutting groove and the second cutting groove. According to the battery sheet slicing method provided by the invention, the battery sheet can be segmented into four sub-sheets along the cross shape, and the sub-sheet quality is good; and the battery sheet assembly manufactured by the battery sub-sheets formed by the method is high in voltage, low in current and not easy to generate a hot spoteffect.

Description

technical field [0001] The invention relates to the technical field of photovoltaic cell production, in particular, to a method for slicing a cell sheet. Background technique [0002] Existing cell cutting is to cut the whole cell into strip-shaped small cells, which are then made into battery components. [0003] However, the battery module formed by this cutting method has a low voltage and a high current, and a high current will cause a hot spot effect. The hot spot effect refers to: in a series circuit, the working states of the batteries are inconsistent, and the "inconsistency" may be caused by the defects or differences of the batteries themselves in addition to partial shading. [0004] Therefore, it is necessary to provide a new technical solution to overcome the defects of the battery assembly formed by the battery sheets in the prior art. SUMMARY OF THE INVENTION [0005] The purpose of the present invention is to provide a new slicing method capable of dividi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L21/67H01L31/18
CPCH01L21/67092H01L31/1876Y02P70/50
Inventor 李文蒋伟光林凯
Owner WUXI AUTOWELL TECH