On-board electrical system and method for operating an on-board electrical system

US9944188B2 · kind B2 · utility

Assignee

• CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

• Dirk Reichow · Monsheim, DE
• Peter Voelkl · Wenzenbach, DE
• Michael Scheurer · Reichenbach/Oberlausitz, DE

Key dates

• Filing date: Jul 3, 2014
• Grant date: Apr 17, 2018
• Expiry date: May 4, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T90/14
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An on-board electrical system for a vehicle comprising: a first energy store; a second energy store; a DC/DC converter bidirectionally transferring energy between the first energy store and the second energy store; and two switching devices for coupling a first terminal of the second energy store to a first terminal of the first energy store via a first node, a second node, and a third node. The system further comprises: four current determining units for: a first current flowing between the first terminal of the first energy store and the first node, a second current flowing via the first switching device and the second switching device, a third current flowing between the first terminal of the second energy store and the second node, and a fourth current flowing between the third node and the DC/DC converter; an electrical resistor couplable to the first terminal of the second energy store by means of a third switching device; a voltage determining unit determining a first voltage value of the second energy store if the electrical resistor is electrically isolated from the first terminal of the second energy store and a second voltage value of the second energy store if the elect…