Gm global technology operations llc (20240424945). EARLY DETECTION OF BATTERY CELL PERFORMANCE DEGRADATION
EARLY DETECTION OF BATTERY CELL PERFORMANCE DEGRADATION
Organization Name
gm global technology operations llc
Inventor(s)
Hanho Yun of Oakland Twp MI (US)
Jun-mo Kang of Ann Arbor MI (US)
Chen-fang Chang of Bloomfield HIlls MI (US)
EARLY DETECTION OF BATTERY CELL PERFORMANCE DEGRADATION
This abstract first appeared for US patent application 20240424945 titled 'EARLY DETECTION OF BATTERY CELL PERFORMANCE DEGRADATION
Original Abstract Submitted
aspects of the disclosure include the detection of battery cell degradation. an exemplary battery management system can include a memory, computer readable instructions, and one or more processors that perform operations that include: responsive to determining that a charging state has completed, measuring a first cell voltage of a cell of the battery pack; responsive to the first cell voltage exceeding a reference voltage, measuring a second cell voltage of the cell of the battery pack; responsive to the second cell voltage being equal to the reference voltage, measuring a cell pressure of the cell of the battery pack at the reference voltage; determining a difference between the cell pressure and a prior cell pressure at the reference voltage; and responsive to the difference between the cell pressure and the prior cell pressure exceeding a threshold, identifying the cell of the battery pack as a degraded cell.