US 11,870,094 B2
Battery module, battery rack comprising same, and power storage device
Eun-Gyu Shin, Daejeon (KR); Jeong-O Mun, Daejeon (KR); Jae-Min Yoo, Daejeon (KR); Yoon-Koo Lee, Daejeon (KR); Yong-Seok Choi, Daejeon (KR); and Jee-Soon Choi, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/431,388
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jun. 23, 2020, PCT No. PCT/KR2020/008193
§ 371(c)(1), (2) Date Aug. 16, 2021,
PCT Pub. No. WO2021/002626, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 10-2019-0080195 (KR), filed on Jul. 3, 2019.
Prior Publication US 2022/0115737 A1, Apr. 14, 2022
Int. Cl. H01M 50/383 (2021.01); H01M 50/507 (2021.01); H01M 10/613 (2014.01); H01M 10/627 (2014.01); H01M 10/6555 (2014.01); H01M 10/658 (2014.01)
CPC H01M 50/383 (2021.01) [H01M 10/613 (2015.04); H01M 10/627 (2015.04); H01M 10/658 (2015.04); H01M 10/6555 (2015.04); H01M 50/507 (2021.01); H01M 2220/10 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A battery module comprising:
at least two cell assemblies, each of the at least two cell assemblies including a plurality of secondary batteries electrically connected to each other and stacked in a front-rear direction;
a module housing having a first side wall, a second side wall and an internal space in which the at least two cell assemblies is received;
a first gas passage formed between the first side wall and a first side of the at least two cell assemblies for circulation of gas generated from the at least two cell assemblies; and
a flame retardant plate extending in a left-right direction including:
a body formed in a plate shape and interposed between the at least two cell assemblies, and
a first flame barrier extending in the left-right direction from a first end of the body and disposed in part of the first gas passage.