US 12,224,620 B2
Power supply circuit and uninterruptible power supply ups 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 Jan. 7, 2022, as Appl. No. 17/570,662.
Application 17/570,662 is a continuation of application No. PCT/CN2020/098059, filed on Jun. 24, 2020.
Claims priority of application No. 201910615941.9 (CN), filed on Jul. 9, 2019.
Prior Publication US 2022/0131407 A1, Apr. 28, 2022
Int. Cl. H02J 9/06 (2006.01); H02J 7/00 (2006.01)
CPC H02J 9/062 (2013.01) [H02J 7/0013 (2013.01); H02J 7/0063 (2013.01); H02J 2310/16 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A power supply circuit applied to an uninterruptible power supply (UPS) system, comprises:
a first power conversion module;
a battery bank;
a first bus;
a second bus;
a first wiring terminal of the first power conversion module being connected to the battery bank; and
a second wiring terminal of the first power conversion module being connected to the first bus and the second bus; wherein:
the first power conversion module is configured to:
perform direct current to direct current (DC/DC) conversion on a current output by the battery bank;
output a first current to the first bus;
output a second current to the second bus, wherein the second current is receivable by the second bus without passing through the first bus;
receive currents output by the first bus and the second bus, wherein the first power conversion module is configured to receive currents output by the second bus without the currents passing through the first bus; and
supply power to the battery bank by performing direct current to direct current (DC/DC) conversion on the currents output by the first bus and the second bus.