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:
May. 16, 2000
Filed:
Jan. 25, 1999
Applicant:
Inventor:
Mikitaka Tamai, Tsuna-gun, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
320134 ; 320136 ;
Abstract
A charging circuit is provided with a charge control switch connected in series with a rechargeable battery, and a current sensing circuit to determine whether or not current flows through the rechargeable battery. A charging control circuit is also included to determine a charge state of the rechargeable battery and to control operation of the charge control switch. Further an operation control circuit for allowing operation of the charging control circuit in response to current flow through the rechargeable battery determined by the current sensing circuit.