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. 17, 1993
Filed:
Nov. 12, 1991
Applicant:
Inventor:
Akira Sanpei, Fukushima, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
320 23 ; 320 31 ; 320 37 ; 320 39 ;
Abstract
A method of charging a secondary battery by means of a constant voltage power source for supplying a limited current. The method includes a first step of charging the secondary battery until a predetermined condition is reached, and a second step of further charging the secondary battery for a predetermined period of time after the predetermined condition is reached. Accordingly, overcharge of the secondary battery can be surely prevented.