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.:

US 6969973 B1

PDF
Full Text
Expired
Date of Patent:
Nov. 29, 2005

Filed:

Nov. 05, 2003
Applicants:

Kozo Ooi, Sumoto, JP;

Masao Yamaguchi, Sumoto, JP;

Inventors:

Kozo Ooi, Sumoto, JP;

Masao Yamaguchi, Sumoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J007/00 ;
U.S. Cl.
CPC ...
Abstract

An apparatus for calculating remaining capacity of a battery is provided with a current detection section to detect current flow in the battery, a remaining capacity calculation section to integrate the current value detected by the current detection section and calculate remaining capacity, and a memory section to store discharge current within a specified current range. When current detected by the current detection section is within a specified range, the remaining capacity calculation section uses current values stored in the memory section, rather than values detected by the current detection section, as discharge current to calculate remaining capacity.


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