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METHOD AND SYSTEM FOR MONITORING BATTERY CELL HEALTH

United States Patent Application

20160380317
A1
View the Complete Application at the US Patent & Trademark Office
A strain sensor, a system for monitoring a state of a battery cell, and a battery including the strain sensor. The strain sensor includes a thin, flexible substrate, a plurality of piezoresistors mounted on the substrate, an input for receiving a voltage signal, an output for providing an output voltage signal from the plurality of piezoresistors. The plurality of piezoresistors are connected to form a circuit that is insensitive to a change in temperature and an in-plane deformation of the substrate. The system includes the strain sensor, a source of voltage, and an analysis module configured for receiving a voltage signal based on the output voltage signal provided at the output of the strain sensor and calculating a state of charge or a state of health of a battery cell based on the received voltage signal. The battery includes the strain sensor and a space for spacing adjacent battery cells.
Lin, Yizhen (Niskayuna, NY), Knobloch, Aaron Jay (Niskayuna, NY), Kapusta, Christopher James (Niskayuna, NY), Karp, Jason Harris (Niskayuna, NY)
14/ 832,330
August 21, 2015
STATEMENT OF GOVERNMENT RIGHTS [0002] This invention was made with Government support under Award Number DE-AR0000269 awarded by U.S. Department of Energy. The Government has certain rights in this invention.