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:
Aug. 31, 2021
Filed:
May. 26, 2020
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Kohei Takahashi, Toyota, JP;
Takayuki Akaishi, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A sensor abnormality determination device that determines abnormality in a current sensor includes an acquisition unit configured to acquire a closed circuit voltage of the battery and acquires an open circuit voltage of the battery obtained from a state of charge of the battery when the closed circuit voltage is acquired based on a predetermined SOC−OCV characteristic curve, a derivation unit configured to derive a first voltage difference which is a difference value between the closed circuit voltage and the open circuit voltage and a second voltage difference which is a change amount of a voltage obtained from a current of the battery detected by the current sensor and an internal resistance, and a determination unit configured to determine whether the current sensor is abnormal based on the first and the second voltage difference when the first voltage difference is equal to or larger than a first predetermined value.