US 11,929,614 B2
Energy storage system and switching power supply thereof
Wei Cao, Hefei (CN); and Ri Fang, Hefei (CN)
Assigned to Sungrow Power Supply Co., Ltd., Hefei (CN)
Filed by Sungrow Power Supply Co., Ltd., Hefei (CN)
Filed on Dec. 27, 2021, as Appl. No. 17/562,068.
Claims priority of application No. 202110192388.X (CN), filed on Feb. 20, 2021.
Prior Publication US 2022/0271532 A1, Aug. 25, 2022
Int. Cl. H02J 3/00 (2006.01); H02J 3/32 (2006.01); H02J 3/38 (2006.01); H02J 9/00 (2006.01); H02J 9/06 (2006.01); H02M 7/04 (2006.01)
CPC H02J 3/007 (2020.01) [H02J 3/32 (2013.01); H02J 3/381 (2013.01); H02J 9/005 (2013.01); H02J 9/061 (2013.01); H02M 7/04 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A switching power supply for an energy storage system, wherein
an alternating current, AC, input terminal of the switching power supply is connected to an AC power source via a first protection fuse unit;
a direct current, DC, input terminal of the switching power supply is connected to an energy storage unit in the energy storage system via a second protection fuse unit;
an output terminal of the switching power supply is connected to a power supply terminal of a master control unit in the energy storage system and a power supply terminal of an additional load in the energy storage system; and
the switching power supply is configured to: receive electric energy from at least one of the energy storage unit and the AC power source, and supply power to the master control unit and the additional load in the energy storage system; and switch, when the energy storage system enters a standby state, to a low-power-consumption standby mode to supply power at most to the master control unit.