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:
Apr. 13, 2021
Filed:
Sep. 28, 2017
Gs Yuasa International Ltd., Kyoto, JP;
GS YUASA INTERNATIONAL LTD., Kyoto, JP;
Abstract
An SOC estimation deviceof an energy storage device includes a storage unitand a data processing unit. The energy storage devicehas a characteristic including a first deterioration mode in which a capacity drop with respect to time indicates a first transition, and a second deterioration mode in which a capacity drop indicates a second transition. The storage unitholds first correlation data Mindicating a correlation between SOC and OCV of the energy storage device in the first deterioration mode, and second correlation data Mindicating a correlation between SOC and OCV of the energy storage device in the second deterioration mode. The data processing unitexecutes a mode determination process of determining a deterioration mode of the energy storage device, and an estimation process of selecting correlation data corresponding to the deterioration mode from the storage unit, to estimate SOC of the energy storage device.