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Maintenance method for HJT solar cell texturing cleaning equipment

A technology for cleaning equipment and solar cells, applied in cleaning methods and utensils, cleaning methods using liquids, chemical instruments and methods, etc., can solve the problems of long maintenance time, incomplete cleaning of the tank surface, etc. The effect of improving soaking effect and improving cleaning efficiency

Inactive Publication Date: 2021-02-05
SUZHOU AIKANG LOW CARBON TECH INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned shortcomings, and provide a maintenance method for HJT solar cell texturing cleaning equipment, which is used to solve the problems of incomplete cleaning of the surface of the tank body and too long maintenance time during the maintenance process of the equipment, and improve the unit cost after cleaning the texturing. The surface cleanliness and reflectivity of crystalline silicon wafers can achieve higher photoelectric conversion efficiency and service life, and the stable process is more suitable for mass production

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of maintenance method of HJT solar cell texturing cleaning equipment related to the present invention, it comprises the following content,

[0022] Multiple low-frequency ultrasonic generators are fixed at the bottom of the texturing cleaning tank;

[0023] a. Drainage: each tank drains;

[0024] b. Water flushing: first rinse with a water gun, then close the valve and open the ultrasonic switch, add water to rinse and overflow for 1-2 minutes, finally close the ultrasonic switch and open the valve to drain;

[0025] c. Cleaning debris: Use tools such as water guns to clean debris and other impurities in the gaps in the tank;

[0026] d. Water flushing: first rinse with a water gun, then close the valve and open the ultrasonic switch, add water to rinse and overflow for 1-2 minutes, finally close the ultrasonic switch and open the valve to drain water;

[0027] e. Soaking: Add water and liquid medicine to bubble in each tank for 2-3 minutes, turn on the ultraso...

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Abstract

The invention relates to a maintenance method for HJT solar cell texturing cleaning equipment. The maintenance method comprises the steps that a plurality of ultrasonic generators are fixed at the bottom of a tank body in the maintenance process of the texturing cleaning equipment, flushing is carried out through a water gun after a liquid is drained, then a valve is closed, ultrasonic switches ofthe low-frequency ultrasonic generators are turned on, water is added for moistening and cleaning, overflowing is carried out for 1-2 min, and finally, the ultrasonic switches are closed, and the valve is opened for drainage. The ultrasonic-assisted cleaning method can improve the cleaning efficiency, and can reduce the maintenance time; in the soaking procedure, low-frequency ultrasonic waves are used for assisting in cleaning so that impurities such as organic matter, silicon particles, and metal ions left on the surface of the tank body can completely react with liquid medicine, the maintenance time is shortened, and the soaking effect is improved; and in the rinsing and overflowing steps of the water flushing procedure, the low-frequency ultrasonic waves are used for assisting in cleaning, so that the cleaning liquid medicine in pores is completely diluted, and the water flushing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of solar cell cleaning, in particular to a method for maintaining HJT solar cell texture cleaning equipment. Background technique [0002] With the rapid development of solar cell technology, the conversion efficiency of crystalline silicon solar cells is increasing year by year. Silicon-based heterojunction (HJT) cells are the third-generation solar cells with the most development potential after high-efficiency PERC, with high conversion efficiency, high open circuit voltage, low temperature coefficient, no light-induced degradation (LID), and no electrical degradation (PID), low process temperature, high bifaciality, etc., showing broad application prospects in the distributed solar power generation and building integrated photovoltaics that are currently being vigorously promoted in my country. [0003] The high efficiency of HJT cells comes from the amorphous silicon heterojunction structure on its surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B3/12B08B9/08B08B9/093B08B13/00
CPCB08B3/12B08B9/08B08B9/093B08B13/00
Inventor 张超雄王铭汪涛凌俊郭小勇易治凯
Owner SUZHOU AIKANG LOW CARBON TECH INST