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:
Jun. 29, 2021
Filed:
Mar. 02, 2020
Yazaki Corporation, Tokyo, JP;
Yoshihiro Kawamura, Makinohara, JP;
YAZAKI CORPORATION, Tokyo, JP;
Abstract
A ground fault detection device that is connected to an ungrounded battery, estimates an insulation resistance of the system provided with the battery, and detects a ground fault, includes a capacitor that operates as a flying capacitor, two C-contact switches that switch a V0 charging path including the battery and the capacitor, a Vcn charging path including the battery, a negative-side insulation resistance that is an insulation resistance between a negative side of the battery and ground, and the capacitor, a Vcp charging path including the battery, a positive-side insulation resistance insulation resistance that is an insulation resistance between a positive-side insulation resistance of the battery and ground, and the capacitor, and a measurement path that serves both a charge voltage measurement and a discharge of the first capacitor, and an optical MOS-FET capable of blocking charge inflow to and charge outflow from the capacitor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile