US 11,955,606 B2
Wireless communication method in battery pack and master BMS providing the method
Ho Byung Yoon, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/928,495
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Aug. 10, 2021, PCT No. PCT/KR2021/010597
§ 371(c)(1), (2) Date Nov. 29, 2022,
PCT Pub. No. WO2022/059922, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 10-2020-0121337 (KR), filed on Sep. 21, 2020.
Prior Publication US 2023/0207890 A1, Jun. 29, 2023
Int. Cl. H01M 10/42 (2006.01); H04B 1/7143 (2011.01); H04B 1/715 (2011.01)
CPC H01M 10/4207 (2013.01) [H04B 1/7143 (2013.01); H04B 1/715 (2013.01); H01M 2010/4271 (2013.01); H01M 2010/4278 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A master battery management system (BMS) for performing wireless communication with a slave BMS according to a frequency hopping method in a battery pack, the master BMS comprising:
a communicator configured to receive first channel scan information generated by scanning a plurality of channels belonging to a frequency bandwidth used in the wireless communication by a device disposed outside the battery pack;
a channel analyzer configured to generate second channel scan information by scanning the channels belonging to the frequency bandwidth;
a storage configured to store a reference signal to noise ratio (SNR) value on the wireless communication; and
a controller configured to select a hopping channel used in the frequency hopping method based on the first channel scan information and to calculate a signal intensity of the selected hopping channel based on the second channel scan information and the reference SNR value.