US 11,817,563 B2
Battery management system wake-up method, battery management system wake-up apparatus, and storage medium
Hui Jia, Ningde (CN); Xueyu Zhan, Ningde (CN); Jihai Xie, Ningde (CN); Yajie Yuan, Ningde (CN); and Jinfu Wang, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Jul. 14, 2022, as Appl. No. 17/864,676.
Application 17/864,676 is a continuation of application No. PCT/CN2021/106358, filed on Jul. 14, 2021.
Prior Publication US 2023/0020775 A1, Jan. 19, 2023
Int. Cl. H01M 10/42 (2006.01); G01R 31/3835 (2019.01); H01M 10/48 (2006.01); B60L 58/10 (2019.01); H02J 7/00 (2006.01)
CPC H01M 10/4285 (2013.01) [B60L 58/10 (2019.02); G01R 31/3835 (2019.01); H01M 10/425 (2013.01); H01M 10/486 (2013.01); H02J 7/0029 (2013.01); H01M 2010/4271 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A battery management system (BMS) wake-up method, comprising:
before a BMS hibernates, obtaining a first sampling voltage of a battery cell that is collected by a sampling chip, and determining, based on an extremum of the first sampling voltage, a wake-up threshold, wherein the wake-up threshold is used for the sampling chip to wake up the BMS when the BMS is hibernating; and
when the BMS is hibernating, receiving a BMS wake-up signal transmitted by the sampling chip and waking up the BMS, wherein the BMS wake-up signal is transmitted by the sampling chip when it is determined that a sampling value of a second sampling voltage of the battery cell reaches the wake-up threshold, and the second sampling voltage of the battery cell is collected by the sampling chip when the BMS is hibernating;
wherein determining, based on the extremum of the first sampling voltage, the weak-up threshold comprises:
determining the extremum of the first sampling voltage as a target voltage; and
determining, based on the target voltage and a voltage threshold, the wake-up threshold.