Apparatus and method for determining state of change (SOC) and state of health (SOH) of electrical cells

US11549919B2 · kind B2 · utility

Assignee

• THE TRUSTEES OF PRINCETON UNIVERSITY · US

Inventors

• Daniel Artemis Steingart · Princeton, US
• Shoham Bhadra · New Brunswick, US
• Andrew Gaheem Hsieh · Berkeley, US
• Benjamin Hertzberg · Highland Park, US
• Peter James Gjeltema · Stow, US
• Clarence Worth Rowley, III · Princeton, US
• Alexandre S. R. Goy · Lawrenceville, US
• Jason W. Fleischer · Princeton, US

Key dates

• Filing date: Mar 8, 2019
• Grant date: Jan 10, 2023
• Expiry date: Mar 8, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Systems and methods for prediction of state of charge (SOH), state of health (SOC) and other characteristics of batteries using acoustic signals, includes determining acoustic data at two or more states of charge and determining a reduced acoustic data set representative of the acoustic data at the two or more states of charge. The reduced acoustic data set includes time of flight (TOF) shift, total signal amplitude, or other data points related to the states of charge. Machine learning models use at least the reduced acoustic dataset in conjunction with non-acoustic data such as voltage and temperature for predicting the characteristics of any other independent battery.