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Fail-safe designs for large capacity battery systems

United States Patent

May 17, 2016
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Fail-Safe Design for Large Capacity Li-Ion Battery Systems
Fail-safe systems and design methodologies for large capacity battery systems are disclosed. The disclosed systems and methodologies serve to locate a faulty cell in a large capacity battery, such as a cell having an internal short circuit, determine whether the fault is evolving, and electrically isolate the faulty cell from the rest of the battery, preventing further electrical energy from feeding into the fault.
Kim; Gi-Heon (Superior, CO), Smith; Kandler (Golden, CO), Ireland; John (Denver, CO), Pesaran; Ahmad A. (Boulder, CO), Neubauer; Jeremy (Denver, CO)
Alliance for Sustainable Energy, LLC (Golden, CO)
13/ 628,208
September 27, 2012
CONTRACTUAL ORIGIN The United States Government has rights in this invention under Contract No. DE-AC36-08GO28308 between the United States Department of Energy and the Alliance for Sustainable Energy, LLC, the Manager and Operator of the National Renewable Energy Laboratory.