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:
Oct. 11, 2022
Filed:
Dec. 23, 2020
Nuvoton Technology Corporation Japan, Kyoto, JP;
Kazuo Matsukawa, Osaka, JP;
Yu Okada, Osaka, JP;
Yoshikazu Makabe, Osaka, JP;
Hitoshi Kobayashi, Osaka, JP;
Takeshi Misaku, Osaka, JP;
Keiichi Fujii, Shiga, JP;
NUVOTON TECHNOLOGY CORPORATION JAPAN, Kyoto, JP;
Abstract
A battery monitoring device includes a first reference resistor disposed in a path different from a path of current flowing from a battery to a load; a transistor for passing current from the battery to the first reference resistor; and an integrated circuit. The integrated circuit includes: a current measurement unit that measures a first current flowing through the first reference resistor; a voltage measurement unit that measures a first voltage of the battery; and a first calculation unit that calculates an AC impedance of the battery based on the first current measured and the first voltage measured.