US 12,294,109 B2
Battery module having structure capable of delaying outflow of fire-fighting water injected therein in case of fire, and battery rack and energy storage device comprising same
Young-Seok Lee, Daejeon (KR); Sang-Hyun Jo, Daejeon (KR); Kyung-Hyun Bae, Daejeon (KR); Jin-Kyu Shin, Daejeon (KR); and Jin-Kyu Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/628,828
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Feb. 3, 2021, PCT No. PCT/KR2021/001424
§ 371(c)(1), (2) Date Jan. 20, 2022,
PCT Pub. No. WO2021/167270, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 10-2020-0019308 (KR), filed on Feb. 17, 2020.
Prior Publication US 2022/0263192 A1, Aug. 18, 2022
Int. Cl. H01M 50/383 (2021.01); A62C 3/16 (2006.01); A62C 35/10 (2006.01); A62C 35/13 (2006.01); A62C 37/36 (2006.01); H01M 10/48 (2006.01); H01M 10/6561 (2014.01); H01M 10/6566 (2014.01); H01M 50/20 (2021.01); H01M 50/204 (2021.01); H01M 50/211 (2021.01); H01M 50/24 (2021.01); H01M 50/60 (2021.01); H01M 50/636 (2021.01); H01M 50/673 (2021.01)
CPC H01M 50/383 (2021.01) [A62C 3/16 (2013.01); A62C 35/10 (2013.01); A62C 35/13 (2013.01); A62C 37/36 (2013.01); H01M 10/486 (2013.01); H01M 10/6561 (2015.04); H01M 10/6566 (2015.04); H01M 50/20 (2021.01); H01M 50/204 (2021.01); H01M 50/211 (2021.01); H01M 50/24 (2021.01); H01M 50/636 (2021.01); H01M 50/668 (2021.01); H01M 50/673 (2021.01); H01M 10/48 (2013.01); H01M 2200/10 (2013.01); H01M 2220/10 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a cell stack including a plurality of battery cells stacked in a direction;
a module housing having an internal space in which the cell stack is received and an air inlet and an air outlet through which air enters and exits;
a valve installation hole formed through a side wall of the module housing;
a feed valve nozzle disposed facing the internal space of the module housing at a location of the valve installation hole;
an expandable member provided in the module housing; and
a frame retaining the expandable member, the frame having a fixed shape,
wherein the expandable member absorbs fluid to expand in volume during operation of the feed valve nozzle to close at least one of the air inlet, the air outlet or the valve installation hole.