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:
Nov. 30, 1999
Filed:
Dec. 15, 1997
Applicant:
Inventor:
Nobuo Shiojima, Tokyo, JP;
Assignee:
Toshiba Battery Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
320118 ; 320116 ; 320134 ; 320136 ;
Abstract
A correction device for secondary batteries comprises a voltage difference detection circuit for detecting variation in terminal voltages of at least two secondary batteries connected in series, and a discharge circuit for discharging one of the at least two secondary batteries which has a maximum terminal voltage, when the variation in the terminal voltages exceeds a preset value. The discharge circuit stops discharging when the terminal voltage of the one of the secondary batteries which is discharged becomes lower than a reference value.