Motor vehicle supply system

US10518643B2 · kind B2 · utility

Assignee

• LEONI Bordnetz-Systeme GmbH · DE

Inventors

• Matthias Ebert · Dettelbach, DE
• Markus Rau · Kitzingen, DE

Key dates

• Filing date: May 10, 2017
• Grant date: Dec 31, 2019
• Expiry date: Mar 9, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/52
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A motor vehicle supply network, in particular a 48V on-board power supply of a motor vehicle, contains a current source, a power distributor connected to the current source via a supply current path, and at least one load connected to the power distributor via a load current path with an integrated semiconductor switch. A current-measuring unit, a voltage-measuring unit and a monitoring unit are integrated into the power distributor. The monitoring unit is configured in such a way that same detects an imminent fault based on the measurement data of the current-measuring unit and/or the measurement data of the voltage-measuring unit, and in such a way that same initiates a switching-off of the at least one load using the semiconductor switch. Both imminent over-current faults and imminent arc faults are detected as an imminent fault.