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:
Oct. 27, 1998
Filed:
Feb. 27, 1997
Applicant:
Inventor:
Mikitaka Tamai, Tsuna-gun, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J / ;
U.S. Cl.
CPC ...
320141 ; 320134 ; 320139 ; 320146 ; 320164 ;
Abstract
The battery apparatus has a circuit to turn off a switching device and suspend charging when rechargeable battery voltage exceeds a specified voltage, and to turn on the switching device and resume charging when rechargeable battery voltage drops below the specified voltage. The switching device is switched on and off to pulse charge the rechargeable battery. When cut-off of charging voltage to the rechargeable battery is detected, an over-ride circuit forces the switching device on, or a forced discharge circuit discharges the rechargeable battery until battery voltage drops below the specified voltage.