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:
Dec. 12, 2023
Filed:
Sep. 14, 2020
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Emha Bayu Miftahullatif, Tokyo, JP;
Toru Kouno, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/392 (2019.01); G01R 31/396 (2019.01); G01R 31/3835 (2019.01); G01R 31/374 (2019.01); H02J 7/00 (2006.01); H01M 10/48 (2006.01);
U.S. Cl.
CPC ...
G01R 31/392 (2019.01); G01R 31/374 (2019.01); G01R 31/3835 (2019.01); G01R 31/396 (2019.01); H01M 10/482 (2013.01); H01M 10/486 (2013.01); H02J 7/005 (2020.01); H01M 2220/10 (2013.01);
Abstract
An object of the present invention is to provide a battery state estimation device capable of accurately estimating a deterioration state of an entire battery system in consideration of an SOH distribution of battery cells. The battery state estimation device according to the present invention estimates an SOH of a battery cell by using a correspondence between a time derivative of an output voltage during a pause period of the battery cell and a battery temperature, and estimates a deterioration state of an entire battery system by using the SOHs of a plurality of battery cells (see FIG.).