US 12,362,439 B2
Electrode assemblies including current limiters
Michael J. Armstrong, New Braunfels, CA (US); Daniel J. Noelle, Mountain View, CA (US); Robert S. Busacca, San Francisco, CA (US); Bruno A. Valdes, Sunnyvale, CA (US); Robert K. Rosen, Lincoln, CA (US); Murali Ramasubramanian, Fremont, CA (US); Ashok Lahiri, Cupertino, CA (US); and Robert M. Spotnitz, Pleasanton, CA (US)
Assigned to Enovix Corporation, Fremont, CA (US)
Filed by Enovix Corporation, Fremont, CA (US)
Filed on May 12, 2023, as Appl. No. 18/316,321.
Application 18/316,321 is a continuation of application No. 17/657,391, filed on Mar. 31, 2022, granted, now 11,682,812, issued on Jun. 20, 2023.
Application 17/657,391 is a continuation of application No. PCT/US2022/021440, filed on Mar. 22, 2022.
Claims priority of provisional application 63/168,430, filed on Mar. 31, 2021.
Claims priority of provisional application 63/202,922, filed on Jun. 30, 2021.
Prior Publication US 2023/0344092 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 50/533 (2021.01); H01M 10/0525 (2010.01); H01M 10/0585 (2010.01); H01M 50/531 (2021.01); H01M 50/536 (2021.01); H01M 50/54 (2021.01); H01M 50/572 (2021.01); H01M 50/581 (2021.01); H01M 50/583 (2021.01)
CPC H01M 50/533 (2021.01) [H01M 10/0525 (2013.01); H01M 10/0585 (2013.01); H01M 50/531 (2021.01); H01M 50/536 (2021.01); H01M 50/54 (2021.01); H01M 50/572 (2021.01); H01M 50/581 (2021.01); H01M 50/583 (2021.01)] 29 Claims
OG exemplary drawing
 
1. An electrode assembly for cycling between a charged state and a discharged state within a range of normal operating temperatures between negative 30 degrees Celsius (° C.) and 80° C., the electrode assembly comprising:
a population of unit cells stacked atop each other in a stacking direction, each member of the unit cell population includes an electrode structure, a separator structure, and a counter-electrode structure, wherein:
the electrode structure comprises an electrode current collector and an electrode active material layer, the electrode structure extends in a longitudinal direction perpendicular to the stacking direction, an end portion of the electrode current collector extends past the electrode active material and the separator structure in the longitudinal direction, and the end portion of the electrode current collector comprises a bent portion that is bent in a direction orthogonal to the longitudinal direction of the electrode structure and extends in the stacking direction; and
the counter-electrode structure comprises a counter-electrode current collector and a counter-electrode active material layer, the counter-electrode structure extends in a longitudinal direction perpendicular to the stacking direction;
an electrode busbar extending in the stacking direction; and
a population of current limiters disposed between the bent end portion of the population of unit cells and the electrode busbar, wherein:
each member of the population of current limiters is disposed between the bent end portion of the electrode current collector of a different electrode structure and the electrode busbar to electrically connect the electrode structures to the electrode busbar;
the bent end portion of the electrode current collector has an inner surface and an outer surface opposite the inner surface, the inner surface being closer to the electrode active material layer than the outer surface;
the electrode busbar is positioned adjacent the outer surface of the bent end portion of the electrode current collector; and
one or more current limiters of the population of current limiters are disposed between the outer surface of the bent end portion of the electrode current collector and the electrode busbar.