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:
Sep. 25, 2001
Filed:
Aug. 09, 2000
Makoto Ochiai, Oyama, JP;
Masato Suzuki, Toride, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
A rechargeable battery arrangement in which total service capacity for discharge from full charging to a final discharge voltage varies according to discharge conditions for discharging charged electric charge, comprising: an integration member which integrates quantity of electric charge discharged between a point of start of discharge after charging and the present; a data storage member for storing a plurality of total service capacities for discharge at a plurality of values of discharge current, respectively in unique association with a specific one of the total service capacities for discharge at a specific one of the values of discharge current; a current detection member for detecting a present value of discharge current; and a calculation member which obtains, from data obtained by the data storage member on the basis of the present value of discharge current detected by the current detection member, a total service capacity corresponding to or closest to the present value of discharge current and calculates, from the total service capacity and an integrated value obtained by the integration member, a residual capacity of electric charge for discharge.