US 12,407,064 B2
Battery pack comprising extinguishment unit
Jin-Kyu Lee, Daejeon (KR); Goan-Su Jung, Daejeon (KR); Jun-Min Lee, Daejeon (KR); and Gyong-Jin Oh, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Jun. 11, 2024, as Appl. No. 18/739,734.
Application 18/739,734 is a continuation of application No. 17/628,055, granted, now 12,034,177, previously published as PCT/KR2020/010509, filed on Aug. 7, 2020.
Claims priority of application No. 10-2019-0096939 (KR), filed on Aug. 8, 2019.
Prior Publication US 2024/0332729 A1, Oct. 3, 2024
Int. Cl. H01M 50/383 (2021.01); A62C 3/16 (2006.01); A62C 37/40 (2006.01); H01M 10/48 (2006.01); H01M 10/627 (2014.01); H01M 10/6567 (2014.01); H01M 50/209 (2021.01); H01M 50/251 (2021.01); H01M 50/375 (2021.01)
CPC H01M 50/383 (2021.01) [A62C 3/16 (2013.01); A62C 37/40 (2013.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H01M 10/627 (2015.04); H01M 10/6567 (2015.04); H01M 50/209 (2021.01); H01M 50/251 (2021.01); H01M 50/375 (2021.01); H01M 2200/10 (2013.01); H01M 2220/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
at least two battery modules arranged in one direction;
a fire extinguisher;
a fire extinguishing tank configured to accommodate 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 temperature sensor measuring the temperature of each of the at least two battery modules; and
a valve to supply the fire extinguishing agent from the fire extinguishing tank to the at least one battery module having a temperature over a predetermined temperature,
wherein the pipe includes a common pipe connected to an outlet hole of the fire extinguishing tank through which the fire extinguishing agent is output, and a distribution pipe having a distributed structure to be connected from the common pipe to an inlet hole of each of the at least two battery modules through which the fire extinguishing agent is input,
wherein the valve includes a common valve located in the common pipe to open or close the common pipe, and a distribution valve located in the distribution pipe to open or close the distribution pipe, and
wherein the distribution valve is a passive valve configured to be opened to inject the fire extinguishing agent into the battery module over the predetermined temperature.