Potting method for medium high-overload recording device

Abstract

The invention discloses a potting method for a medium high-overload recording device, and relates to a process design method for the medium high-overload recording device. The medium high-overload recording device comprises a printed-circuit board component, a battery unit and a shell; the method is characterized by comprising the following steps that 1, a control circuit unit shell is designed according to the structure of the printed-circuit board component; 2, a battery unit shell is designed according to a battery structure; 3, a polyurethane foaming material is adopted for potting the printed-circuit board component into the control circuit unit shell; 4, the polyurethane foaming material is adopted for potting the battery into the battery unit shell; 5, the polyurethane foaming material is adopted for potting the control circuit unit shell and the battery unit shell into the shell. By improving the traditional method, the foaming reaction time is shortened, the foaming reaction temperature is lowered, the stress action and damage which are generated by an electronic component on the printed-circuit board are lowered, the reliability of the medium high-overload recording device is improved, and the yield of the medium high-overload recording device is increased, and the recording device has the capacity of bearing the high-overload property.

Description

technical field [0001] The invention relates to a process design method for a medium-sized high overload recording device, in particular to a method for potting a medium-sized high overload recording device. Background technique [0002] Since the beginning of the 21st century, the international situation has become more and more severe, and missile control technology is widely used in aviation, aerospace and other fields. In order to realize real-time tracking, recording and analysis of the test track and test data of high overload products, the high overload recording device has become a recorder. Ideal equipment for high-overload products. With the application of embedded computers in high-overload products, the requirements for recording and analysis in high-overload recording devices are increasing, and the volume of recording devices is also increasing accordingly. Therefore, medium-sized high-overload recording devices are Came into being. [0003] The characteristic...

AI Technical Summary

Problems solved by technology

[0005] For the filling and sealing of the recording device, it is common practice to put the recording device that has been debugged and tested into a closed structure and pour it into a two-component polyurethane foam material. However, due to the characteristics of the two-component polyurethane foam material, During the curing process, due to the impact of the potting amount and potting process, it will generate horizontal or vertical stress on the printed circuit board and electronic components, and damage the electronic components and solder joints on the printed circuit board, thereby reducing Recording device reliability

Even if the products pass the inspection, there are quality risks, and there may be abnormal electrical functions when used in a high overload environment, and data cannot be recorded and analyzed

Images