Energy conscious warm-up of lithium-ion cells from sub-zero temperatures

US11660980B2 · kind B2 · utility

Assignees

• THE REGENTS OF THE UNIVERSITY OF MICHIGAN · US
• The Government of the United States, as represented by the Secretary of the Army · US

Inventors

• Anna Stefanopoulou · Ann Arbor, US
• Shankar Narayan Mohan · Ann Arbor, US
• Youngki Kim · Ann Arbor, US
• Jason B. Siegel · Ann Arbor, US
• Yi Ding
• Wesley G. Zanardelli · Rochester, US
• Sonya Zanardelli · Rochester, US

Key dates

• Filing date: Dec 4, 2015
• Grant date: May 30, 2023
• Expiry date: Dec 4, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/70
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

There is disclosed an electrical device and a method in which a battery is warmed up when operating from a sub-zero temperature. The electrical device may include a battery; an electrical storage element; and a battery management system including a controller in electrical communication with the battery and the electrical storage element. The controller can be configured to execute a program stored in the controller to shuttle energy between the battery and the electrical storage element until a power capability threshold of the battery has been reached, Shuttling the energy raises a temperature of the battery to meet power demand.