US 12,224,419 B2
Battery module having structure into which cooling water can be introduced when thermal runaway phenomenon occurs, and battery pack and energy storage device comprising same
Min-Ho Kwon, Daejeon (KR); Jae-Uk Ryu, Daejeon (KR); Jeong Bin Yu, Daejeon (KR); and Jin-Hak Kong, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/625,561
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jul. 3, 2020, PCT No. PCT/KR2020/008737
§ 371(c)(1), (2) Date Jan. 7, 2022,
PCT Pub. No. WO2021/006560, PCT Pub. Date Jan. 14, 2021.
Claims priority of application No. 10-2019-0082288 (KR), filed on Jul. 8, 2019.
Prior Publication US 2022/0294052 A1, Sep. 15, 2022
Int. Cl. H01M 10/6567 (2014.01); A62C 2/06 (2006.01); A62C 3/16 (2006.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01M 10/613 (2014.01); H01M 10/63 (2014.01); H01M 10/6562 (2014.01); H01M 50/204 (2021.01); H01M 50/502 (2021.01)
CPC H01M 10/6567 (2015.04) [A62C 2/06 (2013.01); A62C 3/16 (2013.01); H01M 10/4257 (2013.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H01M 10/613 (2015.04); H01M 10/63 (2015.04); H01M 10/6562 (2015.04); H01M 50/204 (2021.01); H01M 50/502 (2021.01); H01M 2010/4271 (2013.01); H01M 2200/10 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A battery module comprising:
a cell stack comprising a plurality of battery cells;
a module housing in which the cell stack is received;
an air inlet passing through the module housing on a first side of a stack direction of the cell stack;
an air outlet passing through the module housing on a second side in the stack direction of the cell stack; and
at least one expandable pad disposed inside of the air inlet and the air outlet to close the air inlet and the air outlet, by expansion upon contact with cooling water introduced into the module housing thereby preventing the cooling water introduced into the module housing from leaking out of the module housing.