logo

For the Inventor, By the Inventor

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.:

US 10656213 B1

PDFFull Text
Expired
Date of Patent:
May. 19, 2020

Filed:

Jun. 23, 2016

Internal resistance calculation device, recording medium, and internal resistance calculation method

Applicant:

Sumitomo Electric Industries, Ltd., Osaka-shi, JP;

Inventors:

Hiroaki Takechi, Osaka, JP;

Tomomi Kataoka, Osaka, JP;

Youhei Yamaguchi, Osaka, JP;

Aoi Hatanaka, Osaka, JP;

Assignee:

Sumitomo Electric Industries, Ltd., Osaka-shi, JP;

Attorneys:

Baker Botts L.L.P.

Michael A. Sartori

Primary Examiner:

Amy He

Int. Cl.
CPC ...
G01R 31/389 (2019.01); G01R 31/378 (2019.01); G01R 31/36 (2020.01); G01R 31/392 (2019.01); G01R 31/3842 (2019.01); G01R 31/374 (2019.01);
U.S. Cl.
CPC ...
G01R 31/389 (2019.01); G01R 31/36 (2013.01); G01R 31/3648 (2013.01); G01R 31/378 (2019.01); G01R 31/374 (2019.01); G01R 31/3842 (2019.01); G01R 31/392 (2019.01);
Abstract

An internal resistance calculation device is provided with: a voltage obtaining portion that obtains the voltage of a secondary battery; a current obtaining portion that obtains the current of the secondary battery; a switching determination portion that determines the presence or absence of switching between charging and discharging of the secondary battery based on the obtained current; an identification portion that identifies a waiting time based on a boundary frequency range in which the diffusion impedance arising from the process of diffusion of a predetermined ion contributes to the impedance of the secondary battery in the impedance spectrum of the secondary battery; and a resistance calculation portion that calculates the internal resistance of the secondary battery based on the voltage and the current obtained after the identified waiting time in a case where it is determined that switching between charging and discharging of the secondary battery is present.

Find Patent Forward Citations

Quick Actions:

Takechi, Hiroaki. (2020). Internal resistance calculation device, recording medium, and internal resistance calculation method (U.S. Patent No. 10656213). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10656213

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…