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:
Mar. 29, 2022
Filed:
Feb. 25, 2020
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Toshihiko Minamii, Nisshin, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A charger includes: a relay provided between an input line and a conversion circuit; a voltage sensor that detects AC voltage input to the input line; and a controller that calculates effective value and frequency of the AC voltage based on a waveform of the AC voltage for a predetermined period. When the calculated effective value of the AC voltage is smaller than a voltage threshold during execution of external charging, the controller brings the relay into an open state. When the calculated effective value of the AC voltage is larger than the voltage threshold and the calculated frequency of the AC voltage is larger than a frequency threshold value after the external charging is halted, the controller brings the relay into a close state.