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. 09, 2001
Filed:
Nov. 27, 2000
Applicant:
Inventor:
Wellington Y. Kwok, Fishers, IN (US);
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 1/044 ; H01M 1/046 ;
U.S. Cl.
CPC ...
H01M 1/044 ; H01M 1/046 ;
Abstract
An apparatus and methods for determining dynamic state-of-charge of a battery that is subject to periodic charging and discharging within a system. Correction factors &eegr; are determined for various operational conditions of current, temperature and state of charge which relate relative discharge and charge efficiency with a reference set of conditions. According to conditions, the correction factor, either calculated in real-time or retrieved as a stored value, is then applied periodically to the charge and discharge currents of the battery to adjust an estimated state-of-charge value (SOC) for the battery within the given system.