The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2022
Filed:
Dec. 15, 2020
GM Global Technology Operations Llc, Detroit, MI (US);
James D. Hendrickson, Oxford, MI (US);
Jeffrey A. Tymitz, Bruce Township, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system for assessing health of a cell group within a module of a battery pack includes a controller having a processor and tangible, non-transitory memory on which instructions are recorded. One or more sensors are configured to obtain a series of respective average cell group voltages at different stages. The controller is adapted to obtain a measured voltage (V) of the cell group at a calibration event occurring after the third stage. The controller is adapted to calculate a predicted voltage (V) of the cell group based in part on a sum of a disparity factor (ΔV) and a third stage cell group voltage (V). The cell group is controlled based at least partially on a difference between the measured voltage (V) and the predicted voltage (V).