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:
Jun. 09, 2020
Filed:
Aug. 27, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Satoshi Goto, Nagakute, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A state of charge estimation method includes: measuring a voltage of a lithium ion secondary battery that is being charged at a predetermined current rate higher than or equal to a predetermined charging rate; obtaining a rate of increase in the measured voltage; and estimating a state of charge of the lithium ion secondary battery based on the rate of increase in the measured voltage and first reference data. The first reference data are data including a correlation between a state of charge of a reference lithium ion secondary battery and a rate of increase in voltage of the reference lithium ion secondary battery when the reference lithium ion secondary battery is charged at the predetermined current rate.