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:
Aug. 04, 1998
Filed:
Mar. 20, 1997
Applicant:
Inventor:
Tetsuya Okada, Sumoto, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01R / ;
U.S. Cl.
CPC ...
324428 ; 324429 ; 324430 ; 320 48 ;
Abstract
The method of calculating rechargeable battery charge capacity of this invention has steps to temporarily interrupt charging and calculate battery internal impedance, to calculate a no-load battery voltage by subtracting the product of internal impedance and charging current from the battery voltage when charging current is supplied, to calculate charging power by multiplying no-load voltage and charging current, and to repeatedly perform the charging power calculation integrating that charging power result to compute battery charge capacity.