US 12,218,317 B2
Battery pack with optical communication between master BMS and slave BMS
Ji-Won Hwang, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/420,250
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Sep. 17, 2020, PCT No. PCT/KR2020/012582
§ 371(c)(1), (2) Date Jul. 1, 2021,
PCT Pub. No. WO2021/060775, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 10-2019-0119187 (KR), filed on Sep. 26, 2019.
Prior Publication US 2022/0069363 A1, Mar. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/42 (2006.01); H01M 10/44 (2006.01)
CPC H01M 10/425 (2013.01) [H01M 10/441 (2013.01); H01M 2010/4271 (2013.01); H01M 2220/20 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
a communication module configured to block light between an inside and an outside of the communication module, the communication module including a plurality of master light emitting devices and a plurality of slave light receiving devices, each of the slave light receiving devices being configured to receive a first signal output from a corresponding one of the master light emitting devices;
a master battery management system (BMS) coupled to the plurality of master light emitting devices, the master BMS configured to control each of the plurality of master light emitting devices to output the first signal; and
a plurality of slave BMSs coupled respectively to the plurality of slave light receiving devices, each of the slave BMSs configured to change an operation mode in response to a corresponding one of the slave light receiving devices receiving the first signal from the corresponding one of the master light emitting devices.