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:
Mar. 04, 1997
Filed:
Oct. 20, 1994
Applicant:
Inventor:
Toshiharu Kokuga, Sumoto, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
320 13 ; 320 21 ; 320 31 ; 320 32 ; 320 39 ;
Abstract
A method and apparatus for protecting a secondary battery initially judges whether or not the secondary battery, previously charged to a capacity more than a predetermined capacity, has been discharged to a capacity less than the predetermined capacity within a predetermined time. Then, compulsorily discharging at the secondary battery is effected until it has a capacity less than the predetermined capacity when it is judged that the secondary battery has not been discharged to a capacity less than the predetermined capacity.