An automatic temperature regulation process

Abstract

The invention provides an automatic temperature adjustment process, which is used for automatic temperature adjustment during the temperature stabilization process, comprising the following steps: S1: detecting the liquid surface temperature of the silicon solution, setting the main power according to the liquid surface temperature, performing temperature adjustment, and adjusting the temperature of the liquid Adjust the surface temperature to the welding temperature; S2: Perform overheating welding; S3: Set the automatic cooling power and perform automatic cooling; S4: Set the seeding power and stabilize the temperature so as to reach the seeding temperature and perform seeding. The beneficial effect of the present invention is that by simulating manual operation, the temperature adjustment logic of artificial temperature stabilization can be copied, making the temperature adjustment more accurate, scientific, and unified, and the automatic, standardized, and unmanned automatic process is realized, avoiding the need for human experience. The waste of working hours and the occurrence of abnormal accidents caused by the shortage.

Description

technical field [0001] The invention belongs to the technical field of single crystal production, and in particular relates to an automatic temperature adjustment process. Background technique [0002] At present, the competition in the industry is becoming increasingly fierce, and cost reduction and efficiency increase have become a magic weapon for an enterprise to survive. At present, in the production process of solar photovoltaic material manufacturing, except for the equal-diameter process state (automatic has been realized), the operation is the most difficult and takes the longest time. The state of the art process is temperature stabilization. At present, the manual temperature stabilization method is generally used in the industry. The manual temperature stabilization method is very dependent on operating experience, and requires the continuous attention of the operator, which takes up a lot of manual energy and practice. [0003] The current industry average of m...

AI Technical Summary

Problems solved by technology

The reason why it is so difficult to stabilize the temperature is mainly because if the temperature of the silicon solution in the quartz crucible is to reach a stable state that can be seeded, the given power of the heater must be accurate, and as long as the power value is adjusted once, the silicon in the quartz crucible will Due to the distance between the solution and the heater and the influence of thermal convection, the reaction time is relatively long, which takes about 50 minutes. Depending on the size of the quartz crucible, the time varies. The reaction time ranges from about 30min to 60min, and the working time is long. , and prone to accidents

If someone with inexperienced operation, the given seeding power is too high or too low, or intervenes to adjust the temperature before the temperature reacts, this kind of bad operation will lead to difficulty in temperature stabilization, long time for temperature stabilization, and waste of working hours