US 12,274,902 B2
Battery module comprising absorption member, battery rack comprising same, and power storage system
Jin-Kyu Lee, Daejeon (KR); and Gi-Moon Gil, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/772,463
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jan. 7, 2021, PCT No. PCT/KR2021/000169
§ 371(c)(1), (2) Date Apr. 27, 2022,
PCT Pub. No. WO2021/145605, PCT Pub. Date Jul. 22, 2021.
Claims priority of application No. 10-2020-0004377 (KR), filed on Jan. 13, 2020.
Prior Publication US 2022/0355136 A1, Nov. 10, 2022
Int. Cl. H01M 50/24 (2021.01); A62C 2/06 (2006.01); A62C 3/16 (2006.01)
CPC A62C 2/065 (2013.01) [A62C 3/16 (2013.01); H01M 50/24 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A battery module, comprising:
at least two cell assemblies, each cell assembly of the at least two cell assemblies having a plurality of secondary batteries;
a module housing having an inner space formed to accommodate the at least two cell assemblies therein; and
an absorption member interposed between the at least two cell assemblies and configured to absorb a fire extinguishing liquid when contacting the fire extinguishing liquid supplied into the module housing,
wherein the battery module further comprises a pressing member that includes an elastic portion configured to elastically deform in opposite directions relative to the pressing member, and at least two pressing plates coupled to ends of the elastic portion and configured to block expansion of the at least two cell assemblies.