Conductivity monitoring device for silicon cell cleaning liquid medicine

Abstract

The invention provides a conductivity monitoring device for silicon cell cleaning liquid medicine, which comprises a first supporting column, a first rotating motor is fixedly arranged on the first supporting column, a first lead screw is fixedly arranged at the output end of the first rotating motor, and a first nut is movably arranged on the first lead screw; the air cylinder is fixedly arranged on the side face of the first nut, and a conductivity monitoring probe is embedded in the side face of the conductivity monitoring rod; a cleaning plate is fixedly arranged at the bottom of the extension rod; the bearing gear is hinged to the conductivity monitoring rod in a sleeving mode through a second circular ring bearing, and stirring blades are fixedly arranged on the circular ring plate. According to the conductivity monitoring device for the silicon cell cleaning liquid medicine, the conductivity monitoring probe can be cleaned in real time, impurity attachment and liquid residue are avoided, water near the probe can be stirred during monitoring, standing layering or too large difference between local water bodies is avoided, and the monitoring result is more accurate.

Description

technical field [0001] The invention relates to the technical field of conductivity monitoring devices, in particular to a conductivity monitoring device for cleaning chemical solutions for silicon batteries. Background technique [0002] The texturing process is an important process in the production of solar cells, and its main function is to form a textured surface to increase the absorption and utilization of light. In conventional technology, when silicon wafers in the texturing process of polycrystalline solar cells pass through the texturing machine, they need to pass through the following tanks: texturing tank, first washing tank, alkali tank, second washing tank, acid tank, third washing tank tank, drying tank, etc., and then enter the next process. Among them, the concentration of the acid bath has a great influence on the battery efficiency, and its concentration is related to whether the dense oxide layer SiO2 on the surface of the silicon wafer is completely re...

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Problems solved by technology

[0004] However, there are still relatively obvious defects in its use: 1. The above-mentioned device uses the detection probe of the same conductivity meter to detect the liquid in multiple water tanks, but does not detect the detection probe when changing the detection water body. Cleaning, if the substance in the previous water body is attached to the detection probe, or the concentrated liquid in the previous concentrated water body is attached, it will affect the monitoring result of the conductivity of the liquid in a tank, and there will be a large error; 2. The above-mentioned device directly uses the detection probe of the conductivity measuring instrument to monitor the still liquid in the tank, but because the liquid will be layered and precipitated after standing still, and there are sometimes large differences between different regions of some water bodies, so the traditional The accuracy of the static monitoring data results is also low

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