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:
Jun. 09, 2026
Filed:
Feb. 25, 2021
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Sho Shiraga, Tokyo, JP;
Tomoki Takegami, Tokyo, JP;
Assignee:
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/396 (2019.01); G01R 31/36 (2020.01); G01R 31/367 (2019.01); G01R 31/3842 (2019.01); G01R 31/392 (2019.01); G06F 17/18 (2006.01);
U.S. Cl.
CPC ...
G01R 31/396 (2019.01); G01R 31/3648 (2013.01); G01R 31/367 (2019.01); G01R 31/3842 (2019.01); G01R 31/392 (2019.01); G06F 17/18 (2013.01);
Abstract
An ammeter measures current when a storage battery having a plurality of single batteries connected in series is charged or discharged. A voltmeter measures total voltage of the storage battery. A calculation device calculates dV/dt obtained by differentiating the total voltage with respect to time on the basis of a relationship between the total voltage and charging time or discharging time, separates a characteristic peak obtained by a dV/dt curve into peaks for the respective single batteries, and diagnoses soundness of the storage battery on the basis of the separated peaks.