US 12,272,810 B2
Load distributing thermal runaway barrier for a battery cell
Yunshan Liu, Rochester Hills, MI (US); and Thomas J. Wang, Rochester Hills, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Jun. 6, 2022, as Appl. No. 17/832,773.
Prior Publication US 2023/0395900 A1, Dec. 7, 2023
Int. Cl. H01M 10/658 (2014.01); H01M 10/613 (2014.01); H01M 10/625 (2014.01); H01M 10/651 (2014.01)
CPC H01M 10/658 (2015.04) [H01M 10/613 (2015.04); H01M 10/625 (2015.04); H01M 10/651 (2015.04)] 18 Claims
OG exemplary drawing
 
1. A load distributing thermal runaway barrier for an energy storage battery pack, the load distributing thermal runaway barrier comprising:
a first separator plate;
a second separator plate;
at least one first elastic member arranged between the first and second separator plates and configured as at least one Belleville spring to maintain a first load in response to a pressure applied to at least one of the first and second separator plates;
a third separator plate;
a fourth separator plate;
at least one second elastic member arranged between the third and fourth separator plates and configured as at least one Belleville spring to maintain a second load in response to a pressure applied to at least one of the third and fourth separator plates; and
a thermally insulating pad arranged between the second and third separator plates.