Patent ID: 11955802
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A control method for a power supply device, wherein the power supply device comprises a first alternating current/direct current (AC/DC) unit, a second AC/DC unit, a bidirectional direct current/direct current (DC/DC) unit, and a battery backup unit; and wherein an input terminal of the first AC/DC unit is connected to an alternating current input bus, an output terminal of the first AC/DC unit is connected to a first direct current output bus, the first AC/DC unit is an output stable AC/DC unit, an input terminal of the second AC/DC unit is connected to the alternating current input bus, an output terminal of the second AC/DC unit is connected to a second direct current output bus, the second AC/DC unit is output adjustable, the bidirectional DC/DC unit is connected between the first direct current output bus and the second direct current output bus, and a direct current output terminal of the battery backup unit is connected to the first direct current output bus; and
the method comprises:
determining that the first AC/DC unit is faulty; and
enabling the bidirectional DC/DC unit, to supply power to the first direct current output bus through the second direct current output bus.