Constrained electrode assembly

US11205803B2 · kind B2 · utility

Assignee

• Enovix Corporation · US

Inventors

• Robert S. Busacca · San Francisco, US
• Ashok Lahiri · Mainz, DE
• Murali Ramasubramanian · Fremont, US
• Bruno A. Valdes · Sunnyvale, US
• Gardner Cameron Dales · Los Gatos, US
• Christopher J. Spindt · Menlo Park, US
• Geoffrey Matthew Ho · San Ramon, US
• Harrold J. Rust, III · Alamo, US
• James D. Wilcox · Cadillac, US
• John F. Varni · Campbell, US
• Kim Han Lee · Pleasanton, US
• Nirav S. Shah · Pleasanton, US
• Richard J. Contreras · Campbell, US
• Lynn Van Erden · Pollock Pines, US
• Ken S. Matsubayashi · Fremont, US
• Jeremie J. Dalton · San Jose, US
• Jason Howard · Lawrenceville, US
• Robert K. Rosen · Midland, US

Key dates

• Filing date: Jan 25, 2019
• Grant date: Dec 21, 2021
• Expiry date: Jun 24, 2039

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 secondary battery for cycling between a charged and a discharged state, wherein a 2D map of the median vertical position of the first opposing vertical end surface of the electrode active material in the X-Z plane, along the length LE of the electrode active material layer, traces a first vertical end surface plot, EVP1, a 2D map of the median vertical position of the first opposing vertical end surface of the counter-electrode active material layer in the X-Z plane, along the length LC of the counter-electrode active material layer, traces a first vertical end surface plot, CEVP1, wherein for at least 60% of the length Lc of the first counter-electrode active material layer (i) the absolute value of a separation distance, SZ1, between the plots EVP1 and CEVP1 measured in the vertical direction is 1000 μm≥|SZ1|≥5 μm.