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. 06, 2026
Filed:
Oct. 19, 2023
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Makoto Murakami, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A redundant power supply control device controls a sub-battery capable of backing up the main battery. The control device includes an acquisition unit, an estimation unit, and a determination unit. The acquisition unit obtains a voltage value and a current value of the sub-battery. The estimation unit estimates the storage rate of the sub-battery by current integration. The determination unit determines whether the sub-battery can be backed up. The determination unit calculates a first resistance value that is an internal resistance value of the sub-battery estimated based on the measured voltage value and the measured current value, and calculates a second resistance value that is an internal resistance value of the sub-battery estimated based on the estimated voltage value and the measured current value. The determination unit determines whether the sub-battery can be backed up based on the larger one of the first resistance value and the second resistance value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile