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.

Date of Patent:
Nov. 29, 2016

Filed:

Oct. 31, 2013
Applicant:

Gs Yuasa International Ltd., Kyoto-shi, JP;

Inventors:

Kenichi Sejima, Kyoto, JP;

Masashi Nakamura, Kyoto, JP;

Assignee:

GS YUASA INTERNATIONAL LTD., Kyoto-Shi, Kyoto, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/416 (2006.01); G01R 31/36 (2006.01);
U.S. Cl.
CPC ...
G01R 31/362 (2013.01); G01R 31/3648 (2013.01); G01R 31/3658 (2013.01);
Abstract

A condition estimation device for estimating condition of an electric storage device includes a voltage detector and a controller. The voltage detector is configured to detect a voltage of the electric storage device. The controller is configured to perform a distinctive point detection process to detect a distinctive point based on the voltage detected by the voltage detector, and an estimation process to estimate the condition of the electric storage device based on the distinctive point detected in the distinctive point detection process. The distinctive point is a point at which a variation in voltage per unit remaining capacity or per unit time of the electric storage device during charge or discharge is a local maximum value.


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