US 11,984,614 B2
Cap for electrochemical cell
Cyrus S. Rustomji, San Diego, CA (US); Kadir Toksoy, San Diego, CA (US); Andrea Biondi, San Diego, CA (US); Denton Iverson, La Mesa, CA (US); and Maciej Lisiak, San Clemente, CA (US)
Assigned to South 8 Technologies, Inc., San Diego, CA (US)
Filed by SOUTH 8 TECHNOLOGIES, INC., San Diego, CA (US)
Filed on Feb. 1, 2023, as Appl. No. 18/104,567.
Application 18/104,567 is a continuation of application No. PCT/US2023/011864, filed on Jan. 30, 2023.
Claims priority of provisional application 63/306,393, filed on Feb. 3, 2022.
Prior Publication US 2023/0246286 A1, Aug. 3, 2023
Int. Cl. H01M 50/333 (2021.01); H01G 11/60 (2013.01); H01G 11/80 (2013.01); H01G 11/84 (2013.01); H01M 10/0569 (2010.01); H01M 10/058 (2010.01); H01M 50/152 (2021.01); H01M 50/169 (2021.01); H01M 50/186 (2021.01); H01M 50/645 (2021.01)
CPC H01M 50/333 (2021.01) [H01G 11/60 (2013.01); H01G 11/80 (2013.01); H01G 11/84 (2013.01); H01M 10/0569 (2013.01); H01M 10/058 (2013.01); H01M 50/152 (2021.01); H01M 50/169 (2021.01); H01M 50/186 (2021.01); H01M 50/645 (2021.01); H01M 2300/0034 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A cap assembly (1-5) constructed to seal a cell can housing (1) having two electrodes, the cap assembly (1-5) comprises:
an outer surface (2-1), an inner surface (2-2) and a perimeter edge (2-3);
an electrolyte injection port (6) forming a port opening (6-1) between the outer surface (2-1) and the inner surface (2-2);
a vent (24) constructed to form a vent opening (24-1) from the inner surface (2-2) to the outer surface (2-1) when a vent pressure differential is achieved between an outer surface pressure and an inner surface pressure;
an electrical insulator (4, 3);
wherein
the vent (24) is positioned (a) concentric to the electrolyte injection port (6), and (b) closer to the perimeter edge (2-3) than the position of the electrolyte injection port (6); and
the electrical insulator (4,3) is constructed to electrically isolate the vent (24) from the electrolyte injection port (6).