US 12,483,062 B2
Uninterruptible power supply, uninterruptible power supply control method, related apparatus, and system
Chuntao Zhang, Dongguan (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on Apr. 15, 2024, as Appl. No. 18/635,736.
Claims priority of application No. 202310544404.6 (CN), filed on May 15, 2023.
Prior Publication US 2024/0388125 A1, Nov. 21, 2024
Int. Cl. H02J 7/00 (2006.01); H02J 9/06 (2006.01)
CPC H02J 9/062 (2013.01) [H02J 7/0013 (2013.01); H02J 7/0048 (2020.01); H02J 7/0049 (2020.01); H02J 7/0063 (2013.01); H02J 9/068 (2020.01)] 10 Claims
OG exemplary drawing
 
1. An uninterruptible power supply, comprising a controller, a direct current-to-direct current circuit, a rectifier circuit, an inverter circuit, and a battery, wherein
an input end of the uninterruptible power supply is connected to an input end of the rectifier circuit, an output end of the rectifier circuit is connected to an input end of the inverter circuit, an output end of the inverter circuit is connected to an output end of the uninterruptible power supply, one end of the direct current-to-direct current circuit is connected to the output end of the rectifier circuit and the input end of the inverter circuit, and the other end of the direct current-to-direct current circuit is connected to the battery; and
the controller is configured to:
determine a target value of a state of charge (SOC) of the battery, wherein the target value is determined based on a first ratio of a load power of the uninterruptible power supply to a rated power of the uninterruptible power supply, and a second ratio of a target backup time of the uninterruptible power supply to a maximum backup time of the uninterruptible power supply, wherein the target backup time is a backup time corresponding to a load of the uninterruptible power supply; and
control, based on the target value, the rectifier circuit and the direct current-to-direct current circuit to charge the battery to make the SOC of the battery equal to the target value, or control, based on the target value, the inverter circuit and the direct current-to-direct current circuit to discharge the battery to make the SOC of the battery equal to the target value.