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. 25, 1996
Filed:
Feb. 14, 1995
Applicant:
Inventors:
Xavier Andrieu, Bretigny sur Orge, FR;
Philippe Poignant, Villebon/Yvette, FR;
Assignee:
Alcatel NV, Amsterdam, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
324426 ; 324427 ;
Abstract
The state of charge of an electrochemical storage unit is measured by applying to the electrochemical storage unit (32), a voltage pulse which is less than its nominal voltage, so as to make the storage unit deliver a high discharge current for a short period of time. The level of the voltage pulse is chosen to cause a discharge current that varies monotonically and preferably approximately linearly as a function of the state of charge of the storage unit, so that the state of charge can be unambiguously estimated by measuring the discharge current.