US 12,132,223 B2
Apparatus for mitigation of thermal event propagation for battery systems
Mitch Mabrey, Grandview, MO (US); Jamie Andes, Grandview, MO (US); Rick Kehler, Grandview, MO (US); Shane Corlman, California, MO (US); Joe Meehan, Excelsior Springs, MO (US); and Eliot Myers, Liberty, MO (US)
Assigned to Spear Power Systems, LLC, Grandview, MO (US)
Appl. No. 17/600,390
Filed by Spear Power Systems, Inc., Grandview, MO (US)
PCT Filed Apr. 1, 2019, PCT No. PCT/US2019/025155
§ 371(c)(1), (2) Date Sep. 30, 2021,
PCT Pub. No. WO2020/204901, PCT Pub. Date Oct. 8, 2020.
Prior Publication US 2022/0181742 A1, Jun. 9, 2022
Int. Cl. H01M 50/342 (2021.01); H01M 10/04 (2006.01); H01M 10/0525 (2010.01); H01M 10/653 (2014.01); H01M 10/658 (2014.01); H01M 50/178 (2021.01); H01M 50/209 (2021.01); H01M 50/211 (2021.01); H01M 50/222 (2021.01); H01M 50/224 (2021.01); H01M 50/227 (2021.01); H01M 50/229 (2021.01); H01M 50/231 (2021.01); H01M 50/293 (2021.01); H01M 50/358 (2021.01); H01M 50/367 (2021.01); H01M 50/503 (2021.01); H01M 50/507 (2021.01); H01M 50/548 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 10/647 (2014.01)
CPC H01M 50/3425 (2021.01) [H01M 10/0481 (2013.01); H01M 10/0525 (2013.01); H01M 10/653 (2015.04); H01M 10/658 (2015.04); H01M 50/178 (2021.01); H01M 50/209 (2021.01); H01M 50/211 (2021.01); H01M 50/222 (2021.01); H01M 50/224 (2021.01); H01M 50/227 (2021.01); H01M 50/229 (2021.01); H01M 50/231 (2021.01); H01M 50/293 (2021.01); H01M 50/358 (2021.01); H01M 50/367 (2021.01); H01M 50/503 (2021.01); H01M 50/507 (2021.01); H01M 50/548 (2021.01); H01M 50/55 (2021.01); H01M 50/553 (2021.01); H01M 10/647 (2015.04); H01M 2200/20 (2013.01); H01M 2220/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A battery module assembly comprising:
(1) a battery module housing configured to house a plurality of prismatic battery cells, one or more of the plurality of prismatic battery cells comprising:
(i) an outer cell case in which the contents of the prismatic battery cell are contained, the outer cell case presenting a pair of opposed, generally planar surfaces interconnected by opposed sidewall segment pairs;
(ii) a compressive wrap disposed around the outer cell case in covering relationship to at least a portion of the planar surfaces and at least a portion of one of the sidewall segment pairs, the compressive wrap being operable to constrain hoop stresses acting upon the outer cell case during thermal expansion of the prismatic battery cell,
there being at least one sidewall segment of one of the sidewall segment pairs that is uncovered by the compressive wrap and configured to create at least one predetermined point of outer cell case failure during a thermal event in the prismatic battery cell through which ejecta and gas are released from the prismatic battery cell; and
(2) a layered barrier material disposed in between at least two of the plurality of prismatic battery cells, the layered barrier material configured to thermally isolate and control or prevent cell-to-cell propagation of a thermal event occurring within at least one of the plurality of prismatic battery cells, the layered barrier material comprising—
(i) at least two sheets of an anisotropic material, at least one of the sheets of anisotropic material being in direct facing contact with one of the at least two prismatic battery cells, and at least one other of the sheets of anisotropic material being in direct facing contact with one other of the at least two prismatic battery cells;
(ii) optionally at least two sheets of a thermal insulation material, one of the at least two sheets of thermal insulation material being positioned in direct facing contact with one of the at least two sheets of anisotropic material, and the other of the at least two sheets of thermal insulation material being positioned in direct facing contact with the other of the at least two sheets of anisotropic material; and
(iii) a compliant material positioned between the at least two sheets of thermal insulation material under compression, the compliant material being operable for maintaining the at least two sheets of anisotropic material in direct facing contact with the at least two prismatic battery cells.