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:
Feb. 08, 2000
Filed:
Jul. 31, 1998
Applicant:
Inventors:
Joseph Patino, Pembroke Pines, FL (US);
Russell L Simpson, Miami, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
320132 ; 324427 ; 340636 ;
Abstract
A method (200) of estimating existing and/or remaining life cycles of a battery pack (102) having an internal battery cell (104) and battery pack circuitry (110) is based on determining an impedance value of the internal battery cell (Zcell) (104), measuring the battery pack temperature (212), compensating the internal battery cell impedance based on the temperature (218), and estimating the remaining battery life based on the compensated internal battery cell impedance (220). The estimated life cycle value is then communicated to a user through either a charger or radio (112).