US 12,237,698 B2
Method for overcurrent regulation of energy storage system and energy storage system
Chengjie Chen, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on May 29, 2024, as Appl. No. 18/676,820.
Application 18/676,820 is a continuation of application No. PCT/CN2021/142589, filed on Dec. 29, 2021.
Prior Publication US 2024/0313550 A1, Sep. 19, 2024
Int. Cl. H02J 7/00 (2006.01); H02J 7/14 (2006.01)
CPC H02J 7/00304 (2020.01) [H02J 7/00714 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A method for overcurrent regulation of an energy storage system, wherein the energy storage system comprises a plurality of battery clusters connected in parallel, the method comprising:
obtaining a current value and overcurrent capability of each battery cluster in the plurality of battery clusters;
determining an overcurrent value of each battery cluster according to the current value and the overcurrent capability;
determining a maximum overcurrent value from the overcurrent values of the plurality of battery clusters; and
regulating a total current limit value of the energy storage system according to the maximum overcurrent value, comprising:
in response to the maximum overcurrent value being greater than a first threshold, lowering the total current limit value to lower the current value of each battery cluster in the plurality of battery clusters without individually controlling the each battery cluster in the plurality of battery clusters, the first threshold being a preset value greater than zero.