US 12,405,312 B2
Traction battery controller operable to control battery based on adaptive sampled electrochemical impedance spectroscopy battery measurements
Nathan Kempema, Grosse Pointe Farms, MI (US); and David Bilby, Royal Oak, MI (US)
Assigned to FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Sep. 26, 2023, as Appl. No. 18/474,357.
Prior Publication US 2025/0102586 A1, Mar. 27, 2025
Int. Cl. G01R 31/389 (2019.01); B60L 58/12 (2019.01); G01R 31/367 (2019.01)
CPC G01R 31/389 (2019.01) [B60L 58/12 (2019.02); G01R 31/367 (2019.01); B60L 2240/547 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
a battery; and
a controller configured to control the battery based on adaptive sampled electrochemical impedance spectroscopy measurements of the battery; and
wherein each adaptive sampled electrochemical impedance spectroscopy measurement includes a magnitude component and a phase component, and the adaptive sampled electrochemical impedance spectroscopy measurements include electrochemical impedance spectroscopy measurements of the battery at frequencies within regions of a frequency range where a surrogate model of an impedance spectrum of the battery, generated from prior electrochemical impedance spectroscopy measurements of the battery at other frequencies within the frequency range, indicates that additional electrochemical impedance spectroscopy measurements are desired due to the surrogate model of the impedance spectrum of the battery providing a relatively poorer approximation of magnitude or phase components of the surrogate model of the impedance spectrum of the battery compared to other regions of the frequency range.