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:
Aug. 27, 2024
Filed:
Nov. 13, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/3842 (2019.01); G01R 31/36 (2020.01); G01R 31/367 (2019.01); G01R 31/385 (2019.01); H01M 4/485 (2010.01); H01M 10/0525 (2010.01); H01M 10/48 (2006.01);
U.S. Cl.
CPC ...
G01R 31/3842 (2019.01); G01R 31/3648 (2013.01); G01R 31/367 (2019.01); G01R 31/385 (2019.01); H01M 4/485 (2013.01); H01M 10/48 (2013.01); H01M 10/482 (2013.01); H01M 10/0525 (2013.01);
Abstract
A voltage of a battery cell is measured, and a current flowing through the battery cell is measured. An open circuit voltage (OCV) of the battery cell is estimated based on the measured voltage, the measured current, and an equivalent circuit model based on electrochemistry of the battery cell. At least one of a positive electrode and negative electrode of the battery cell is a mixed electrode containing a plurality of materials. The equivalent circuit model is a model including a diffusion resistance component for each of the plurality of materials for use in the positive electrode and the negative electrode.