Power management method and system based on single-key start-stop

The invention relates to the technical field of power supply start-stop management, in particular to a power supply management method and system based on single-key start-stop, and the method comprises the steps: obtaining the current position state of a key; the power-on state of the first chip is judged based on the position state of the key, and in the power-on state of the first chip, the first chip judges whether the power supply has a switching start-stop condition or not based on the position keeping data and/or the interval duration of the key; when the power supply has the switching start-stop condition, controlling the second chip to be electrified, determining the power supply start-stop state after switching start-stop according to the current power supply start-stop state, and determining the voltage stabilization duration of power supply start-stop switching, so as to control the power supply to be adjusted to the power supply start-stop state after switching start-stop; the system is used for e