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. 28, 2017
Filed:
Feb. 21, 2013
Panasonic Corporation, Osaka, JP;
Tsuyoshi Nishio, Chiba, JP;
Osamu Ohashi, Kanagawa, JP;
Noriaki Asaoka, Kanagawa, JP;
Akihiro Morimoto, Kanagawa, JP;
Abstract
The present invention is an in-vehicle charger for detecting ground faults originating in sections in which alternating current is flowing. This device is an in-vehicle charger () for charging a vehicle-mounted battery, wherein the device is provided with: a bridge rectifier () for converting alternating current supplied from a power source to direct current; a ground fault detecting circuit () for outputting a test voltage when a test current flows in a circuit in the in-vehicle charger () and, based on changes in the test current in response to the presence or absence of a ground fault resistor, for detecting a ground fault in the circuit of the in-vehicle charger (); and a controller () for controlling the ground fault sensing circuit () so as to output a test voltage exceeding the forward voltage of a diode provided by the bridge rectifier ().