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:
Jan. 05, 2021
Filed:
Nov. 09, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Takahiro Misawa, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A power transfer device includes a power transfer part configured to contactlessly transfer power to a power reception part of a power reception device, a sensor configured to detect a foreign object that is present between the power transfer part and the power reception part, and a controller configured to control the power transfer part and the sensor. The controller is configured to execute initial learning that learns an initial state of a detection result of the sensor before initiation of foreign object detection using the sensor. The controller is configured to determine presence of the foreign object by using a difference between the initial state and the detection result of the sensor after execution of the initial learning. The controller is configured to control the power transfer part to reduce power to be transferred to the power reception part when the initial learning is not normally executed.