Friction electric energy collecting system used for collecting automobile braking energy

The invention discloses a frictional electric energy collection system for collecting automobile braking energy. The frictional electric energy collection system comprises a frictional electricity generation module and a passive power supply management circuit, wherein the frictional electricity generation module comprises a rotor and a stator, the rotor is installed on the calipers and the brakepad, and the stator is installed on the brake disc and used for converting mechanical energy between the brake disc and the brake pad into electric energy in the running process of the vehicle; and the passive power supply management module is connected with the triboelectricity generation module and is used for collecting and storing the electric energy converted by the triboelectricity generation module. The system can be applied to an automobile brake structure, collects brake energy between a brake pad and a brake disc, generates electric energy, supplies energy to small electronic equipment such as a vehicle-moun