Voltage loss self-sufficient compensation device of 48V direct current bus

The invention discloses a voltage loss self-sufficient compensation device of a 48V direct current bus, which comprises a plurality of storage battery packs connected with the 48V direct current bus, the storage battery packs are connected in series, each storage battery pack is connected with a corresponding DC/DC conversion device, and each DC/DC conversion device comprises a main circuit, an auxiliary power supply circuit, a protection circuit, a measurement circuit and a feedback circuit; an input voltage acquisition circuit, an input current acquisition circuit, an output current acquisition circuit, an output voltage acquisition circuit and a driving circuit of the measuring circuit are all connected with a controller, the controller is connected with a monitor through a communication circuit, and the input voltage acquisition circuit and the input current acquisition circuit are connected to the input end of a main circuit. And the output current acquisition circuit and the output voltage acquisition c