US 12,308,467 B2
Battery module including coolant jet spray nozzles with different melting point metal valves, and battery pack and vehicle including same
Doo-Han Yoon, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/769,189
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Jan. 13, 2021, PCT No. PCT/KR2021/000503
§ 371(c)(1), (2) Date Apr. 14, 2022,
PCT Pub. No. WO2021/246605, PCT Pub. Date Dec. 9, 2021.
Claims priority of application No. 10-2020-0066431 (KR), filed on Jun. 2, 2020.
Prior Publication US 2023/0275313 A1, Aug. 31, 2023
Int. Cl. H01M 50/383 (2021.01); H01M 10/653 (2014.01); H01M 10/6569 (2014.01); H01M 50/211 (2021.01)
CPC H01M 50/383 (2021.01) [H01M 10/653 (2015.04); H01M 10/6569 (2015.04); H01M 50/211 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A battery module, comprising:
a module case;
at least one battery cell disposed in the module case;
at least two coolant jet spray nozzles to spray a jet of coolant at the at least one battery cell; and
coolant tanks coupled to the coolant jet spray nozzles,
wherein a low melting point metal valve is coupled to an inlet of each coolant jet spray nozzle, respectively, and each low melting point metal valve has a corresponding metal with a different melting point than the metal of another one of the low melting point metal valves,
wherein the melting points of the low melting point metal valves range from approximately 50° C. to 200° C.,
wherein the melting points of the low melting point metal valves have a sequentially increasing relationship, and the low melting point metal valve are opened in a sequential order according to the different melting points as a temperature of the battery cell increases, thereby completing multiple coolant injections so that it is possible to prevent thermal runaway from propagating and delay an occurrence of fire.