US 12,218,384 B2
Extended life battery cell
Jiang Fan, San Diego, CA (US); David Christian, San Diego, CA (US); and Gerardo Jimenez, San Diego, CA (US)
Assigned to American Lithium Energy Corporation, Carlsbad, CA (US)
Filed by American Lithium Energy Corporation, Carlsbad, CA (US)
Filed on Nov. 13, 2020, as Appl. No. 17/097,522.
Claims priority of provisional application 62/935,600, filed on Nov. 14, 2019.
Prior Publication US 2021/0151731 A1, May 20, 2021
Int. Cl. H01M 50/54 (2021.01); H01M 50/15 (2021.01); H01M 50/166 (2021.01); H01M 50/543 (2021.01)
CPC H01M 50/54 (2021.01) [H01M 50/15 (2021.01); H01M 50/166 (2021.01); H01M 50/543 (2021.01)] 13 Claims
OG exemplary drawing
 
1. A battery cell, comprising:
a lid including a first pin and a second pin;
a case forming a chamber when sealed with the lid;
a jellyroll including a negative electrode having a negative electrode tab and a positive electrode having a positive electrode tab, the jellyroll being disposed inside the chamber, the negative electrode tab coupling with the first pin to form a negative terminal of the battery cell, and the positive electrode tab coupling with the second pin to form a positive terminal of the battery cell; and
a gasket disposed in a space between the lid and a top of the jellyroll, the gasket having a same shape, a same height, and a same diameter as the space between the lid and the top of the jellyroll such that the gasket occupies an entirety of the space between the lid and the top of the jellyroll, the gasket including a first gasket segment joined with a second gasket segment that is separate and detachable from the first gasket segment, the first gasket segment including two recesses along a surface of the first gasket segment joining with the second gasket segment, the two recesses forming a first aperture and a second aperture through the gasket when the first gasket segment is joined with the second gasket segment, the negative electrode tab being disposed at least partially within the first aperture and the positive electrode tab being disposed at least partially within the second aperture such that the gasket encases each of the negative electrode tab and the positive electrode tab to prevent a contact between the negative electrode tab, the positive electrode tab, and/or the case of the battery cell, and the gasket further including a retention feature that locks the gasket in a fixed position within the battery cell in order to prevent the gasket from rotating within the battery cell.