Electrode assemblies including current limiters and methods of assembling such electrode assemblies

US11682812B2 · kind B2 · utility

Assignee

• Enovix Corporation · US

Inventors

• Michael J. Armstrong · Central City, US
• Daniel J. Noelle · Fremont, US
• Robert S. Busacca · San Francisco, US
• Bruno A. Valdes · Sunnyvale, US
• Robert K. Rosen · Midland, US
• Murali Ramasubramanian · Fremont, US
• Ashok Lahiri · Mainz, DE
• Robert M. Spotnitz · Pleasanton, US

Key dates

• Filing date: Mar 31, 2022
• Grant date: Jun 20, 2023
• Expiry date: Apr 16, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method includes stacking unit cells in a stacking direction. Each unit cell includes an electrode structure, a separator structure, and a counter-electrode structure. The electrode structure includes an electrode current collector and an electrode active material layer, and the counter-electrode structure includes a counter-electrode current collector and a counter-electrode active material layer. The electrode and counter-electrode structures extend in a longitudinal direction perpendicular to the stacking direction, and an end portion of the electrode current collector extends past the electrode active material and the separator structure in the longitudinal direction. The end portion of each electrode current collector is bent in a direction orthogonal to the longitudinal direction, an electrode busbar is positioned extending in the stacking direction with a surface adjacent the end portions, and heat and pressure are applied to the electrode busbar to adhere the end portions to the busbar through an adhesive layer.