Electric direct-current-operated switching power supply and storage battery pack management method thereof

The invention relates to an electric direct-current-operated switching power supply and a storage battery pack management method thereof, wherein the method comprises the following steps of: setting a corresponding number of battery management modules according to the number of storage batteries in a storage battery pack; when in charging, individually charging the corresponding storage battery by each battery management module; and setting a protecting bypass for each storage battery, and when the operational fault of each storage battery occurs, short-circuiting each storage battery by the corresponding bypass thereof. Through the electric direct-current-operated switching power supply adopting the method, one storage battery can be individually charged by one battery management module,and the charging current and voltage can be determined according to the condition of each storage battery when in charging; and when the fault of a single storage battery occurs, the storage battery is short-circuited by utilizing the bypass, protection is supplied for the storage battery pack, and the operational reliability and the stability are improved.