US 12,283,713 B2
Battery pack comprising fire extinguishing unit
Jin-Kyu Lee, Daejeon (KR); and Goan-Su Jung, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/640,741
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Aug. 19, 2020, PCT No. PCT/KR2020/011047
§ 371(c)(1), (2) Date Mar. 4, 2022,
PCT Pub. No. WO2021/045410, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 10-2019-0110333 (KR), filed on Sep. 5, 2019.
Prior Publication US 2022/0359947 A1, Nov. 10, 2022
Int. Cl. H01M 50/383 (2021.01); A62C 3/16 (2006.01); A62C 37/00 (2006.01); H01M 50/204 (2021.01); A62C 37/40 (2006.01)
CPC H01M 50/383 (2021.01) [A62C 3/16 (2013.01); A62C 37/00 (2013.01); H01M 50/204 (2021.01); A62C 37/40 (2013.01); H01M 2200/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
at least two battery modules arranged in one direction; and
a fire extinguisher comprising:
a fire extinguishing tank configured to contain a fire extinguishing agent;
a pipe connected to the fire extinguishing tank to supply the fire extinguishing agent from the fire extinguishing tank to each of the at least two battery modules;
a passive flow rate adjuster provided to the pipe and configured to adjust a feed flow rate of the fire extinguishing agent to be constant, and
at least one valve configured to supply the fire extinguishing agent from the fire extinguishing tank to a battery module of the at least two battery modules having an internal temperature rising over a predetermined temperature.