US 12,412,948 B2
Battery pack having structure allowing input of cooling water into battery module upon occurrence of thermal runaway phenomenon and ESS comprising same
Jin-Kyu Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/773,254
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jan. 4, 2021, PCT No. PCT/KR2021/000032
§ 371(c)(1), (2) Date Apr. 29, 2022,
PCT Pub. No. WO2021/177585, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 10-2020-0027903 (KR), filed on Mar. 5, 2020.
Prior Publication US 2022/0367941 A1, Nov. 17, 2022
Int. Cl. H01M 10/6568 (2014.01); H01M 10/6556 (2014.01); H01M 10/6566 (2014.01); H01M 50/258 (2021.01); H01M 50/507 (2021.01)
CPC H01M 10/6568 (2015.04) [H01M 10/6556 (2015.04); H01M 10/6566 (2015.04); H01M 50/258 (2021.01); H01M 50/507 (2021.01)] 15 Claims
OG exemplary drawing
 
1. A battery pack, comprising:
a pack housing;
a plurality of battery modules stacked in the pack housing;
a water tank connected to the plurality of battery modules and configured to store a coolant;
a coolant tube including a main tube connected to the water tank, a plurality of supply tubes configured to connect the main tube to each of the battery modules, and a bypass tube connected to the main tube at a first point above a supply tube located at a top end among the plurality of supply tubes and at a second point below a supply tube located at a bottom end among the plurality of supply tubes, wherein the main tube and the bypass tube form a loop, and wherein the plurality of supply tubes connect to a portion of the main tube forming the loop;
at least one sensor installed in the pack housing to detect a thermal runaway phenomenon generated in at least a part of the plurality of battery modules; and
a controller configured to output a control signal for introducing a coolant into the battery module through the coolant tube when a thermal runaway phenomenon is detected by the at least one sensor.