US 11,718,188 B2
Wireless battery management system and battery pack including same
Ji-Eun Kim, Daejeon (KR); Chang-Hyun Sung, Daejeon (KR); Sang-Hoon Lee, Daejeon (KR); and Yean-Sik Choi, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Nov. 8, 2022, as Appl. No. 17/982,749.
Application 17/982,749 is a continuation of application No. 16/339,515, granted, now 11,524,588, previously published as PCT/KR2018/006912, filed on Jun. 19, 2018.
Claims priority of application No. 10-2017-0091674 (KR), filed on Jul. 19, 2017.
Prior Publication US 2023/0068623 A1, Mar. 2, 2023
Int. Cl. H01M 10/42 (2006.01); B60L 50/50 (2019.01); H01M 10/48 (2006.01); H02J 7/00 (2006.01); B60L 58/12 (2019.01)
CPC B60L 50/50 (2019.02) [H01M 10/425 (2013.01); H01M 10/4207 (2013.01); H01M 10/482 (2013.01); H02J 7/00 (2013.01); H02J 7/0016 (2013.01); H02J 7/00032 (2020.01); H02J 7/0048 (2020.01); B60L 58/12 (2019.02); H01M 2010/4271 (2013.01); H02J 7/005 (2020.01); H02J 2310/48 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A wireless battery management system comprising:
a plurality of slave battery management system (BMSs) coupled to a plurality of battery modules in one-to-one correspondence, each slave BMS operating in an active mode and a sleep mode using power supplied from the battery module to which the slave BMS is coupled, and, in the active mode, configured to wirelessly transmit a detection signal indicating a state of the battery module to which the slave BMS is coupled; and
a master BMS configured to:
wirelessly receive the detection signal from each of the plurality of slave BMSs,
and
calculate a state of charge (SOC) of each of the plurality of battery modules based on the detection signal, and set a scan cycle for each of the plurality of slave BMSs of scanning the master BMS based on the SOC of each of the plurality of battery modules to switch from the sleep mode to the active mode and wirelessly transmit a control signal to each of the plurality of slave BMSs, the control signal including a wireless balancing command indicating the scan cycle set for each of the plurality of slave BMSs.