DIMENSIONAL CONSTRAINTS FOR THREE-DIMENSIONAL BATTERIES

• Main Authors: SHAH, Nirav, S, LEE, Kim, Han, VARNI, John, F, CONTRERAS, Richard, J, RAMASUBRAMANIAN, Murali, SPINDT, Christopher, J, DIOUMAEV, Vladimir, HO, Geoffrey, Matthew, WILCOX, James, D, LAHIRI, Ashok, VALDES, Bruno, A, DALES, Gardner, Cameron, VAN ERDEN, Lynn, RUST, III, Harrold, J, BUSACCA, Robert, S
• Format: Patent
• Language: English; French; German
• Published: 20.03.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

A secondary battery is provided for cycling between a charged and a discharged state, the secondary battery including a battery enclosure, an electrode assembly, carrier ions, a non-aqueous liquid electrolyte within the battery enclosure, and a set of electrode constraints. The set of electrode constraints includes a primary constraint system having first and second primary growth constraints and at least one primary connecting member, the first and second primary growth constraints separated from each other in the longitudinal direction, wherein the primary constraint array restrains growth of the electrode assembly in the longitudinal direction such that any increase in the Feret diameter of the electrode assembly in the longitudinal direction over 20 consecutive cycles of the secondary battery is less than 20%. The set of electrode constraints further includes a secondary constraint system having first and second secondary growth constraints connected by at least one secondary connecting member, wherein the secondary constraint system at least partially restrains growth of the electrode assembly in a second direction upon cycling of the secondary battery.