GM GLOBAL TECHNOLOGY OPERATIONS LLC (20250110178). STATE-OF-CHARGE ESTIMATOR FOR LITHIUM-ION BATTERY USING HYSTERESIS MODEL

STATE-OF-CHARGE ESTIMATOR FOR LITHIUM-ION BATTERY USING HYSTERESIS MODEL

Organization Name

GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor(s)

Jun-mo Kang of Ann Arbor MI US

Hanho Yun of Oakland Township MI US

STATE-OF-CHARGE ESTIMATOR FOR LITHIUM-ION BATTERY USING HYSTERESIS MODEL

This abstract first appeared for US patent application 20250110178 titled 'STATE-OF-CHARGE ESTIMATOR FOR LITHIUM-ION BATTERY USING HYSTERESIS MODEL

Original Abstract Submitted

an electric vehicle (ev), and systems and methods are introduced in aspects of the disclosure that use a battery management system (bms) for one or more lithium ion (li+) battery cells. the bms includes an apparatus coupled with outer terminals of the one or more li+ battery cells and configured to estimate an open circuit voltage (v) across the li+ battery cells. the apparatus further includes a memory, at least one processor coupled with the memory. the at least one processor is configured, when executing code stored in the memory, to produce a state of charge (soc) observer, the soc observer including a hysteresis model to account for hysteresis in the one or more li+ battery cells.