US 12,009,472 B2
Long cycle-life wound lithium-ion battery cells having metallized film current collectors
Brian G Morin, Greenville, SC (US); Carl C. Hu, Taylors, SC (US); and Drew J. Pereira, Greenville, SC (US)
Assigned to Soteria Battery Innovation Group Inc., Greenville, SC (US)
Filed by Soteria Battery Innovation Group, Inc., Greenville, SC (US)
Filed on May 16, 2022, as Appl. No. 17/744,855.
Prior Publication US 2023/0369638 A1, Nov. 16, 2023
Int. Cl. H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/66 (2006.01); H01M 10/04 (2006.01)
CPC H01M 10/0525 (2013.01) [H01M 4/0404 (2013.01); H01M 4/661 (2013.01); H01M 4/667 (2013.01); H01M 10/0422 (2013.01); H01M 10/0431 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An energy storage cell comprising battery components within a case (housing), said battery components comprising:
an anode current collector,
an anode,
a cathode current collector,
a cathode,
at least one separator, and
at least one electrolyte;
wherein said battery components exhibit a positive pole and negative pole within said case (housing); wherein said anode is a coating on said anode current collector, said cathode is a coating on said cathode current collector, and said separator is interposed between said anode and said cathode; wherein at least one of said anode current collector or said cathode current collector is a metallized film current collector comprising a polymer layer that is coated on at least one side by a conductive layer, wherein said metallized film current collector exhibits a modulus that is greater than 25 N/mm2 and less than 30,000 N/mm2, and wherein said at least one metallized film current collector is connected to one of said negative or said positive pole; wherein said anode current collector is electrically connected to said negative pole; and wherein said cathode current collector is electrically connected to said positive pole;
wherein said anode, said anode current collector, said cathode, said cathode current collector, said separator and said electrolyte are sealed within said case (housing) with said positive pole and said negative pole each connecting electrically outside of said case (housing); and
wherein said battery components comprise a stack of at least three layers, with said stack comprising a region that is curved with a radius of curvature of less than 20 cm and of greater than 500 microns.