US 11,942,617 B2
Battery module, and battery rack and energy storage system including the same
Kyoung-Choon Min, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/050,258
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Feb. 27, 2020, PCT No. PCT/KR2020/002832
§ 371(c)(1), (2) Date Oct. 23, 2020,
PCT Pub. No. WO2020/197111, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 10-2019-0033749 (KR), filed on Mar. 25, 2019.
Prior Publication US 2021/0083344 A1, Mar. 18, 2021
Int. Cl. H01M 10/6566 (2014.01); A62C 2/06 (2006.01); H01M 10/48 (2006.01); H01M 10/613 (2014.01); H01M 50/211 (2021.01); H01M 50/24 (2021.01)
CPC H01M 10/6566 (2015.04) [A62C 2/065 (2013.01); H01M 10/482 (2013.01); H01M 10/613 (2015.04); H01M 50/211 (2021.01); H01M 50/24 (2021.01)] 14 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a plurality of battery cells;
a module case configured to accommodate the plurality of battery cells;
an air intake unit provided to a first side of the module case and configured to guide an air into the module case to cool the plurality of battery cells;
an air discharge unit provided to a second side of the module case and configured to discharge the air introduced into the module case through the air intake unit to the outside of the module case;
a main flow path between the air intake unit and air discharge unit;
at least one sheet member attached to an inner wall of the module case between the air discharge unit and the air intake unit and configured to expand above a predetermined temperature to block the main flow path; and
an air circulation guide member disposed between the air intake unit and the plurality of battery cells, the air circulation guide member having a pair of spaced apart side walls formed from a material configured to expand above the predetermined temperature,
wherein the pair of spaced apart side walls comprises a first wall provided with slits and a second wall contacting the at least one sheet member.