US 11,671,181 B2
Battery system with light-based communication
Maximilian Hofer, Hartberg (AT); Roland Klobasa, Graz (AT); and Gernot Kraberger, Graz (AT)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by Samsung SDI Co., Ltd., Yongin-si (KR)
Filed on Feb. 22, 2021, as Appl. No. 17/181,169.
Claims priority of application No. 20167241 (EP), filed on Mar. 31, 2020; and application No. 10-2021-0020651 (KR), filed on Feb. 16, 2021.
Prior Publication US 2021/0306078 A1, Sep. 30, 2021
Int. Cl. H01M 10/48 (2006.01); H04B 10/80 (2013.01); H01M 10/42 (2006.01)
CPC H04B 10/801 (2013.01) [H01M 10/425 (2013.01); H01M 10/482 (2013.01); H01M 2010/4278 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A battery system comprising:
battery modules, each of the battery modules comprising battery cells in a stacked arrangement and a battery module monitor (BMM) configured to monitor the respective battery cells;
a battery system monitor (BSM) configured to communicate with and control the BMMs;
a housing enclosing the battery modules and the BSM, the battery modules being arranged in the housing such that a swelling compensation channel is formed between the battery modules and the housing; and
an optical communication system (OCS) comprising optical transmitters and optical receivers on the battery modules and on the BSM and configured to connect the BSM with the BMMs via optical signals propagating along the swelling compensation channel,
wherein a first one of the optical transmitters is on the BMM of a first one of the battery modules and a second one of the optical transmitters is on the BMM of a second one of the battery modules, and
wherein a first distance between the first one of the optical transmitters and the BMM of the first one of the battery modules is different from a second distance between the second one of the optical transmitters and the BMM of the second one of the battery modules.