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:
Jun. 28, 2005
Filed:
Jun. 27, 2003
George Hanson, Andover, KS (US);
George Hanson, Andover, KS (US);
LSI Logic Corporation, Milpitas, CA (US);
Abstract
System and methods for evaluating a charge state of a battery are provided. A light source is configured for emitting light through an electrolyte contained within the battery. An optical element determines the charge state based on the light passing through the electrolyte. The optical element may comprise an optical sensor such as a CCD. Such a CCD may be used to determine the location of light impinging the surface of the CCD. In one embodiment, the system includes a processor for determining the index of refraction for the electrolyte based on the location where refracted light impinges a CCD. From that index of refraction, a specific gravity of the electrolyte may be calculated to determine the charge state of the battery.