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. 13, 2017
Filed:
May. 30, 2014
Audi Ag, Ingolstadt, DE;
Sascha Staudenmaier, Gaimersheim, DE;
AUDI AG, Ingolstadt, DE;
Abstract
A method is disclosed for checking the absence of voltage on a power electronic component connected to a high-voltage battery and to an electrical machine in a high-voltage network of a motor vehicle, which component has a higher voltage than a low-voltage network of the motor vehicle. The power electronic component includes an intermediate circuit capacitor, a passive discharge resistor, a plug-in terminal for at least one high-voltage load and a fuse which is connected upstream of the plug-in terminal. Following disconnection of the high-voltage battery from the high-voltage network and when the connector of the cable plugged into the plug-in terminal is withdrawn from the plug-in terminal or a target terminal, a feed voltage is applied via the high-voltage contacts of the plug connection and the voltage curve and/or, after a defined charging time interval of the intermediate circuit capacitor, the resistance is measured by means of a measuring instrument, wherein an absence of voltage is determined in the event of a voltage curve lying in an intended range or a resistance lying in an intended range.