Dual-redundancy aero power supply

A dual-redundancy aero power supply belongs to the field of aerospace power supply and comprises two battery packs, four switching circuits, two DC (Direct Current) switching power supplies, two detection circuits and a control circuit; wherein the DC switching power supplies reduce voltages of the battery packs to the voltages required by loads to supply power for the loads; the detection circuits detect voltage signals of the each battery pack and the each DC switching power supply, and feed back the voltage signals to the control circuit; the control circuit controls the switching circuits by comparing the detected voltages with set reference voltages; both the battery packs and the DC switching power supplies adopt redundant systems to supply power for the loads; and the each battery pack and the each DC switching power supply are respectively connected with one switching circuit, and then are respectively connected in parallel, thereby ensuring that as long as the two battery packs and the two DC switching power supplies are not out of service at the same time, electric equipments of a unmanned plane can be powered up. The dual-redundancy aero power supply of the utility model adopts a centralized power supply way and the dual redundant systems to supply power for the various electric equipments, thereby raising safety and reliability of the system in all directions.