Cascade utilization method of batteries for shared electric bicycles

The invention discloses a shared electric bicycle battery echelon utilization method, which comprises a standard cabinet, a DC/DC converter, a decommissioned electric bicycle shared battery and a control system, and is characterized in that the decommissioned electric bicycle shared battery is mounted in the standard cabinet; by arranging the DC/DC converter, the voltage grade of an existing electric bicycle shared battery is mainly 60 V, a decommissioned shared battery cannot be directly applied to a base station standby power scene, the charging and discharging voltage of the shared battery needs to be adjusted through the DC/DC converter, during charging, the output voltage of a switching power supply is increased to be 70-73 V uniform charging voltage from 56-58 V, and during discharging, the output voltage of the switching power supply is increased to be 70-73 V uniform charging voltage. The 60V voltage grade of the shared battery is reduced to 48V, the voltage grade of the base station standby power sce