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:
Dec. 17, 2013
Filed:
Sep. 22, 2010
Yilu Zhang, Northville, MI (US);
Kwang-keun Shin, Rochester Hills, MI (US);
Xidong Tang, Sterling Heights, MI (US);
Mutasim A. Salman, Rochester Hills, MI (US);
Yilu Zhang, Northville, MI (US);
Kwang-Keun Shin, Rochester Hills, MI (US);
Xidong Tang, Sterling Heights, MI (US);
Mutasim A. Salman, Rochester Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method is provided for determining a battery capacity for a vehicle battery. Open circuit voltages of a vehicle battery are measured during ignition startups. A battery parameter is estimated for the vehicle battery that is a function of a present open circuit voltage measurement for a present ignition startup, a function of at least one open circuit voltage observation of a previous ignition startup, a function of a current draw integration over a time period from a previous ignition startup event to a present ignition startup event, and a function of an adjustment factor. A battery parameter is determined based on a new battery. The battery capacity is calculated as function of the battery parameter for the vehicle battery and the battery parameter for the new battery.