Artificial graphite film applied to unmanned aerial vehicle control chip end cap

Abstract

The invention provides an artificial graphite film applied to an unmanned aerial vehicle control chip end cap. A preparation method of the artificial graphite film includes: (1), using polyimide filmsas a raw material, mutually stacking at least 5-8 layers of the polyimide films, arranging a graphite piece between each two adjacent polyimide films in a fitted manner, and arranging a graphite piece outside the polyimide film at each of the top end and the bottom end in a fitted manner; (2), putting the polyimide films in a carbonizing furnace for carbonizing after being stacked through the step (1), and transferring a carbonized material into a graphitizing furnace for graphitizing to obtain a single graphite film; (3), repeating the steps (1) and (2) for 8-12 times; (4), mutually stackinga plurality of the single graphite films prepared repeatedly, putting the stacked single graphite films in a high-temperature furnace, applying pressure of 5-10N on the stacked single graphite films,holding temperature of 1200 DEG C for 2-4h, and naturally cooling to obtain the artificial graphite film. The artificial graphite film has good heat-radiating performance, and safety is improved while service life is prolonged.

Description

technical field [0001] The invention relates to an artificial graphite film, in particular to an artificial graphite film applied to the end cover of a control chip of an unmanned aerial vehicle. Background technique [0002] At present, UAV technology has achieved unprecedented development. People have already applied drones in aerial photography, weather monitoring, agriculture and other fields. The main control chip of the existing unmanned aerial vehicle is highly integrated, and the area of ​​the entire printed circuit board (PCB for short) is small. When the drone is working, the main control chip of the drone needs to perform a lot of calculations, which consumes a lot of power and generates a lot of heat. At the same time, a wireless network (Wireless-Fidelity, Wi-Fi for short) chip or module integrated on the PCB also consumes relatively high power consumption and generates a huge amount of heat. In addition, because the current PCB generally adopts a large-area ...

AI Technical Summary

Problems solved by technology

Since copper is a good conductor of heat, the heat between the main control chip of the adjacent drone and the Wi-Fi chip or module will be transferred through the copper. Cause the performance of the entire UAV to degrade or even shut down

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