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:
Dec. 08, 2020
Filed:
Jun. 12, 2019
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Masakazu Kato, Numazu Shizuoka, JP;
TOSHIBA TEC KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A power transmission device for use with a power reception device having a power reception coil includes a power transmission coil, a power transmission circuit, a communication circuit, and a control circuit. The power transmission coil is configured to be magnetically coupled to a power reception coil of a power reception device. The power transmission circuit includes a switching element and is configured to switch the switching element to apply alternating current to the power transmission coil. The communication circuit is configured to establish communication with the power reception device. The control circuit is configured to control switching of the power transmission circuit, determine whether or not a load of the power reception device is greater than a threshold based on an output voltage from the switching element and a determination criterion, and provide a notification to the power reception device from the communication circuit.