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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 9444267 B1

PDFFull Text
Date of Patent:
Sep. 13, 2016

Filed:

Mar. 12, 2013

Cell voltage equalizer for multi-cell battery pack which determines the waiting time between equalization operations based on the voltage difference and the state of charge level

Applicant:

Yazaki Corporation, Tokyo, JP;

Inventors:

Shingo Suzuki, Susono, JP;

Tsutomu Saigou, Susono, JP;

Assignee:

YAZAKI CORPORATION, Tokyo, JP;

Attorney:

Mots Law, PLLC

Primary Examiner:

Robert Grant

Assistant Examiner:

John Trischler

Int. Cl.
CPC ...
H02J 7/00 (2006.01); B60L 11/18 (2006.01); H01M 10/44 (2006.01); H01M 10/48 (2006.01); G01R 31/36 (2006.01); H01M 2/10 (2006.01); H01M 10/42 (2006.01);
U.S. Cl.
CPC ...
H02J 7/00 (2013.01); B60L 11/1866 (2013.01); H01M 10/441 (2013.01); H01M 10/482 (2013.01); H02J 7/0014 (2013.01); H02J 7/0016 (2013.01); H02J 7/0018 (2013.01); H02J 7/0019 (2013.01); G01R 31/362 (2013.01); G01R 31/3658 (2013.01); H01M 2/1077 (2013.01); H01M 2010/4271 (2013.01); Y02T 10/7005 (2013.01); Y02T 10/7055 (2013.01); Y02T 10/7061 (2013.01);
Abstract

Cell voltage equalizer includes voltage detection ICs configured to measure output voltages from cells, respectively; discharge circuits () provided to the respective cells, and configured to discharge the output voltages from the respective cells; and a main microcomputer (configured: to find a state of charge of a rechargeable battery () on the basis of the output voltages from the cells measured by the voltage detection ICs; to judge whether or not the state of charge is a predetermined level; to find differential values by subtracting a predetermined baseline voltage from the output voltages from the cells measured by the voltage detection ICs; and to equalize the output voltages if there exists a cell whose differential value is not less than a first voltage threshold value, by use of the corresponding discharge circuit ().

Find Patent Forward Citations

Suzuki, Shingo. (2016). Cell voltage equalizer for multi-cell battery pack which determines the waiting time between equalization operations based on the voltage difference and the state of charge level (U.S. Patent No. 9444267). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9444267

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

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