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. 29, 2021
Filed:
Sep. 12, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Hideki Maeda, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
An electric vehicle includes a main battery, a power converter, a relay, and a controller. The power converter is a device that converts power of the main battery to drive electric power for a motor. The power converter includes a voltage sensor that measures an input voltage. The relay is connected between the main battery and the power converter. The controller stores an output value of the voltage sensor as an offset value at time after a vehicle main switch is turned on and before the relay is closed. The controller controls the power converter based on a value acquired by subtracting the offset value from the output value of the voltage sensor after the relay is closed. The controller opens the relay when a value acquired by subtracting the offset value from the travel-time output value exceeds a first voltage threshold.