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. 08, 2022
Filed:
Apr. 21, 2020
Subaru Corporation, Tokyo, JP;
Yasukazu Nobumoto, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
A vehicle includes: a battery; a motor-generator configured to be coupled to a wheel; a power converter configured to convert and supply, to the motor-generator, power of the battery and to convert and feed back, to the battery, power generated in the motor-generator in response to rotation of the wheel; an SOC deriving unit configured to derive a state-of-charge of the battery; a battery temperature sensor configured to detect a temperature of the battery; and a switching controller configured to derive, based on the state-of-charge and the temperature, a number of revolutions for switching at which switching between servo-off control and zero-torque control is performed, and to perform the servo-off control if a number of revolutions of the motor-generator is equal to or lower than the number of revolutions for switching and perform the zero-torque control if the number of revolutions is higher than the number of revolutions for switching.