US 12,002,940 B2
Emergency rapid cooling capsule embedded within an electric vehicle
Jongseok Moon, Gothenburg (SE)
Assigned to POLESTAR PERFORMANCE AB, Gothenburg (SE)
Filed by Polestar Performance AB, Gothenburg (SE)
Filed on Feb. 15, 2022, as Appl. No. 17/672,439.
Prior Publication US 2023/0261285 A1, Aug. 17, 2023
Int. Cl. H01M 10/6595 (2014.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01M 10/613 (2014.01); H01M 10/625 (2014.01); H01M 10/63 (2014.01); H01M 50/204 (2021.01); H01M 50/249 (2021.01)
CPC H01M 10/6595 (2015.04) [H01M 10/425 (2013.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H01M 10/613 (2015.04); H01M 10/625 (2015.04); H01M 10/63 (2015.04); H01M 50/204 (2021.01); H01M 50/249 (2021.01); H01M 2200/10 (2013.01); H01M 2200/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electric vehicle battery pack including an embedded capsule configured to provide rapid cooling during a thermal event, the electric vehicle battery pack comprising:
a plurality of battery cells;
at least one capsule filled with a fluid, the at least one capsule including a plurality of nozzles positioned in proximity to the plurality of battery cells; and
at least one sensor and an electronic control unit in communication with the plurality of nozzles, wherein the electronic control unit is configured to selectively open one or more of the plurality of nozzles upon detection of the thermal event via the at least one sensor,
wherein the one or more nozzles are configured to open upon reaching at least one of a determined temperature or pressure, wherein the one or more nozzles enable the fluid to rapidly decrease in pressure and accompanying temperature to provide cooling to at least one battery cell of the plurality of battery cells, wherein the fluid is an inert substance stored at room temperature, which, when said one or more nozzles are opened, releases through the one or more nozzles, thereby rapidly decreasing in pressure and accompanying temperature.