US 12,308,653 B2
Energy storage system, physical position identification method, and photovoltaic power generation system
Jianpeng Li, Dongguan (CN); Yuxiang Li, Xi'an (CN); Zhenghua Zou, Dongguan (CN); and Huibin Hao, Dongguan (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on May 26, 2022, as Appl. No. 17/825,835.
Claims priority of application No. 202110585053.4 (CN), filed on May 27, 2021.
Prior Publication US 2022/0393475 A1, Dec. 8, 2022
Int. Cl. H02J 3/38 (2006.01); H02J 7/00 (2006.01); H04L 12/40 (2006.01); H04L 12/46 (2006.01)
CPC H02J 3/381 (2013.01) [H02J 7/0013 (2013.01); H02J 7/007 (2013.01); H04L 12/40169 (2013.01); H04L 12/462 (2013.01); H02J 2207/20 (2020.01); H02J 2300/24 (2020.01); H04L 2012/40215 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An energy storage system, wherein the energy storage system comprises a battery management system and m battery clusters;
each battery cluster comprises n battery packs connected in series, and the battery management system comprises a first controller, m second controllers, and m*n third controllers, wherein m and n are integers greater than 1;
each second controller is connected with third controllers corresponding to the n battery packs in the corresponding battery cluster, and the third controllers corresponding to the n battery packs in each battery cluster are connected; wherein each third controller comprises a digital signal input (DI) interface and a digital signal output (DO) interface; when the third controllers corresponding to the n battery packs in each battery cluster are connected in series, a DI interface of a 1th third controller is suspended, a DO interface of an nth third controller is suspended, and a DI interface of an ith third controller is connected to a DO interface of an (i−1)th third controller;
the first controller is configured to manage the energy storage system, each second controller is configured to manage one corresponding battery cluster, and each third controller is configured to manage one corresponding battery pack; and
the third controllers corresponding to the n battery packs in each battery cluster are configured to determine a physical position of the 1th third controller, and the ith third controller in the third controllers corresponding to the n battery packs in each battery cluster determines a physical position of the ith third controller based on a position signal sent by an (i−1)th third controller, wherein i=2, 3, . . . , or n.