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:
May. 25, 2021
Filed:
Jan. 29, 2019
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Masaru Kimura, Toyota, JP;
Yusuke Furuhashi, Toyota, JP;
Hidenori Yamada, Toyota, JP;
Yusuke Hattori, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An electrically driven vehicle comprises a motor; a power storage device; a first power supply device connected with a power line; a charging device configured to charge the power storage device by using electric power from an external power source; and a second power supply device configured to supply part of the electric power from the external power source to auxiliary machinery via the charging device. The electrically driven vehicle performs a charging efficiency determination process that calculates a charging efficiency as a ratio of a charging power of the power storage device to an input power of the charging device, and that determines whether the charging efficiency is lower than a predetermined efficiency. When the charging efficiency determination process determines that the charging efficiency is lower than the predetermined efficiency, the electrically driven vehicle stops the second power supply device and performs the charging efficiency determination process again.