US 12,328,002 B2
Energy storage system
Zhipeng Wu, Shenzhen (CN); and Lin Li, Shanghai (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Jun. 29, 2023, as Appl. No. 18/343,962.
Application 18/343,962 is a continuation of application No. PCT/CN2021/139870, filed on Dec. 21, 2021.
Claims priority of application No. 202011621197.2 (CN), filed on Dec. 30, 2020.
Prior Publication US 2023/0344235 A1, Oct. 26, 2023
Int. Cl. H02J 3/32 (2006.01); H02J 7/00 (2006.01)
CPC H02J 3/32 (2013.01) [H02J 7/00711 (2020.01); H02J 7/007182 (2020.01); H02J 2203/10 (2020.01); H02J 2207/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. An energy storage system, comprising;
an energy storage module connected to a power conversion module through a direct current bus;
the energy storage module comprises an energy storage unit, a battery control unit, and a direct current/direct current (DC/DC) conversion unit, and the energy storage unit is connected in parallel to the DC/DC conversion unit; the energy storage unit is configured to provide a direct current input voltage for the DC/DC conversion unit; the battery control unit is configured to deliver a black start signal to the DC/DC conversion unit when detecting a black start instruction; the DC/DC conversion unit is configured to: receive the black start signal from the battery control unit and generate a target waveform signal on the direct current bus; and
the power conversion module is configured to: detect the target waveform signal on the direct current bus and turn on based on the target waveform signal.