Series-parallel hybrid power system with parking flameout function

The utility model discloses a series-parallel hybrid power system with a parking flameout function, and the series-parallel hybrid power system comprises an engine, a drive motor, a super capacitance bank, a controller and a three-phase asynchronous belt starter generator (BSG) motor, wherein the drive motor is electrically connected with the controller through a frequency converter, the output end of the engine is connected with the controller, the other end of the controller is connected with the super capacitance bank, the engine drives the three-phase asynchronous BSG motor through a belt, and the other end of the three-phase asynchronous BSG motor is electrically connected with the super capacitance bank and charges the super capacitance bank. The three-phase asynchronous motor is used for substituting the existing permanent magnetic synchronous motor, and the frequency-variable technology is adopted, so that convenience in repairing and speed adjustment is realized, and the performance is good; and meanwhile, when a hybrid power car is stopped, the engine can be closed, so that a purpose for eliminating idle oil consumption, emission and noise, saving energy and reducing the emission can be realized, and a remarkable effect for an urban bus which is frequently started and stopped can be realized on the aspect of energy conservation and emission reduction.