US 11,942,591 B2
Battery cell having welded battery cap
Kenjin Masumoto, Hogyo (JP); and Christophe Mille, Redwood City, CA (US)
Assigned to Tesla, Inc., Austin, TX (US)
Filed by Tesla, Inc., Austin, TX (US)
Filed on Nov. 4, 2022, as Appl. No. 18/052,872.
Application 18/052,872 is a division of application No. 16/309,523, granted, now 11,495,854, previously published as PCT/US2017/038973, filed on Jun. 23, 2017.
Claims priority of provisional application 62/353,664, filed on Jun. 23, 2016.
Prior Publication US 2023/0090639 A1, Mar. 23, 2023
Int. Cl. H01M 10/04 (2006.01); H01M 50/107 (2021.01); H01M 50/147 (2021.01); H01M 50/169 (2021.01); H01M 50/342 (2021.01); H01M 50/578 (2021.01); H01M 50/56 (2021.01)
CPC H01M 10/0431 (2013.01) [H01M 50/107 (2021.01); H01M 50/147 (2021.01); H01M 50/169 (2021.01); H01M 50/3425 (2021.01); H01M 50/578 (2021.01); H01M 50/56 (2021.01); H01M 2220/20 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for constructing a battery comprising:
forming a can;
forming a jelly roll;
inserting the jelly roll into the can;
inserting a top insulator into the can adjacent to and above the jelly roll; and
assembling a battery cap including an outer conductive ring, an insulator ring, a conductive top plate, a conductive rupture plate, wherein the conductive top plate has an opening in a central portion thereof, and wherein the central portion is configured to receive a fill material injected through the opening;
connecting a cathode to the conductive rupture plate;
inserting the battery cap into the can such that the cathode extends into the jelly roll; and
welding the battery cap to an inner surface of the can adjacent to and above the top insulator.