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:
Feb. 20, 2018
Filed:
Nov. 09, 2015
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Daiki Terashima, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A battery system includes: an alkali secondary battery in which a negative electrode open-circuit potential remains constant within a predetermined SOC range; a temperature sensor configured to detect a temperature of the battery; a current sensor; a voltage sensor; and a controller configured to set an upper limit power value that is discharged from the alkali secondary battery, the controller being configured to: calculate a negative electrode potential of the alkali secondary battery based on the negative electrode open-circuit potential, a resistance value of a negative electrode of the alkali secondary battery, the resistance value being specified from the temperature, and the current value; calculate a positive electrode potential of the alkali secondary battery based on the negative electrode potential and the voltage value; and reduce the upper limit power value below a reference power value when the positive electrode potential is equal to or lower than a threshold.