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:
Mar. 15, 2022
Filed:
Apr. 05, 2021
Yazaki Corporation, Tokyo, JP;
YAZAKI CORPORATION, Tokyo, JP;
Abstract
In a battery monitoring device, an amplifier circuit outputs an amplified differential voltage value obtained by amplifying a differential voltage value between a first voltage value of a battery and a reference voltage value, and outputs an amplified differential voltage value obtained by amplifying a differential voltage value between a second voltage value of the battery and the reference voltage value. A CPU calculates an internal resistance value of the battery based on the amplified differential voltage value outputted from the amplifier circuit, the amplified differential voltage value outputted from the amplifier circuit, a current value of a constant current adjusted by a constant current circuit, and a current value of a constant current adjusted by the constant current circuit. The reference voltage value is a voltage value between the first voltage value and the second voltage value.