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Crystal silicon solar battery electrode vulcanization processing method

A solar cell and vulcanization treatment technology, which is applied to circuits, electrical components, semiconductor devices, etc., can solve the problems of component power reduction, silver vulcanization yellowing, battery secondary grid line discoloration, etc., to ensure the appearance of the battery, ensure stability, good processing effect

Inactive Publication Date: 2013-01-16
JIANGSU RONGMA NEW ENERGY
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Problems solved by technology

During this period, if improperly stored, the electrodes of the battery sheet will be in contact with the air for a long time, which will cause the silver sulfide to turn yellow, which will affect the electrical performance and appearance of the battery.
Under normal circumstances, it will cause discoloration of the secondary grid lines of the battery and affect the appearance. Seriously, it will cause vulcanization and discoloration of the main grid lines of the battery and affect welding, resulting in a decrease in module power
At this stage, there is no effective solution to this vulcanization phenomenon, and it is generally sold at a lower price

Method used

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Embodiment

[0012] A method for vulcanizing electrodes of crystalline silicon solar cells, comprising the following steps: in the first step, the crystalline silicon solar cells to be processed are placed in a sintering furnace, and the temperature in the sintering furnace is set at 300°C-480°C, and the sintering furnace The temperature is set to gradually increase. The initial temperature of the sintering furnace is 300°C, and the temperature in the furnace is heated to the set temperature of 480°C and kept for the set time. The set time is 40s-50s, specifically for 45s;

[0013] In the second step, the crystalline silicon solar cell is placed in the sintering furnace, and at the same time, the speed of the crystalline silicon solar cell is set to advance at a constant speed, and the speed of the crystalline silicon solar cell is 0.05m / s-0.1 m / s, specifically 0.08m / s, to decompose the silver sulfide on the electrode of crystalline silicon solar cells and replace it with silver;

[0014]...

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Abstract

The invention relates to a crystal silicon solar battery electrode vulcanization processing method, which belongs to the technical field of the crystal silicon solar batteries. The method comprises the following steps: placing a to-be-processed crystal silicon solar battery in a high temperature environment, and decomposing silver sulfide of a crystal silicon solar battery electrode by heating. According to the invention, not only the appearance of the battery is ensured, but also the stability of the electrical properties is guaranteed, and beside, the method is simple in operation and low in cost, has a good processing effect, and is suitable for processing vulcanizing battery slices in batches.

Description

technical field [0001] The invention relates to an electrode vulcanization treatment method for crystalline silicon solar cells, belonging to the technical field of crystalline silicon solar cells. Background technique [0002] Solar cells are the most promising renewable green new energy technology in the world today, and crystalline silicon solar cells are the mainstream products. During the manufacturing process of crystalline silicon solar cells, silver paste is screen-printed and fired to form conductive electrodes on both sides of the cell. The electrode of the newly cured battery sheet is silvery white, with excellent conductivity and welding. [0003] After the crystalline silicon solar cells are manufactured, they need to be packaged by components, and this process takes several months. During this period, if improperly stored, the electrodes of the battery sheet will be in contact with the air for a long time, which will cause the silver sulfide to turn yellow, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 不公告发明人
Owner JIANGSU RONGMA NEW ENERGY
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