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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 12742823 B1

PDFFull Text
Date of Patent:
Sep. 22, 2026

Filed:

Aug. 25, 2023

Voltage measurement device

Applicant:

Nuvoton Technology Corporation Japan, Kyoto, JP;

Inventors:

Naohisa Hatani, Kyoto, JP;

Goro Mori, Osaka, JP;

Assignee:

NUVOTON TECHNOLOGY CORPORATION JAPAN, Kyoto, JP;

Attorney:

Rimon P.C.

Primary Examiner:

Tung S Lau

Int. Cl.
CPC ...
H02J 7/90 (2026.01); G01R 19/00 (2006.01); G01R 31/371 (2019.01); G01R 31/3835 (2019.01); G01R 31/396 (2019.01); H01M 10/42 (2006.01); H01M 10/48 (2006.01); H01M 50/51 (2021.01); H02J 7/40 (2026.01); H02J 7/50 (2026.01); H02J 7/56 (2026.01); H02J 7/80 (2026.01);
U.S. Cl.
CPC ...
H02J 7/933 (2026.01); G01R 19/0084 (2013.01); G01R 31/371 (2019.01); G01R 31/3835 (2019.01); G01R 31/396 (2019.01); H01M 10/425 (2013.01); H01M 10/482 (2013.01); H01M 50/51 (2021.01); H02J 7/40 (2026.01); H02J 7/50 (2026.01); H02J 7/56 (2026.01); H02J 7/80 (2026.01); H01M 2010/4271 (2013.01); H01M 2010/4278 (2013.01); H02J 2207/20 (2020.01);
Abstract

A voltage measurement device includes a first measurement circuit that measures voltage between both ends of a busbar, a second measurement circuit that measures voltage between both ends of each of a plurality of first battery cells and a plurality of second battery cells, and a correction circuit that corrects a measurement value measured by the second measurement circuit. The second measurement circuit is connected to the plurality of first battery cells, the busbar, and the plurality of second battery cells via the plurality of second RC filters. The correction circuit corrects a measurement value measured by the second measurement circuit using a measurement value of voltage between both ends of the busbar measured by the first measurement circuit.

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