Method and a device for monitoring high-voltage connections of a hybrid vehicle

US8199449B2 · kind B2 · utility

Assignees

• LEONI Bordnetz-Systeme GmbH · DE
• CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

• Christian Kuschnarew · Coburg, DE
• Volker Hartmann · Castell, DE
• Volker Albert · Leimen, DE
• Matthias Ebert · Dettelbach, DE

Key dates

• Filing date: Sep 1, 2010
• Grant date: Jun 12, 2012
• Expiry date: Jan 14, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T90/40
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A monitoring device for protecting against contact or access to a hybrid vehicle having a plurality of high-voltage components and an electronic control unit connected to a low-voltage vehicle electrical system battery. Power actuators for actuating at least one electric machine are connected to a high-voltage battery by way of a power switch. The high-voltage components are monitored by way of a looped circuit and deactivated if the looped circuit is broken. A sensor that is sensitive to magnetic field changes is disposed in or at a removable contact connection of the electric machine or the electronic control unit. The sensor is connected to the looped circuit. A control component of the electronic control unit activates a discharge unit for discharging an energy storage device upon receiving a sensor signal generated by the sensor when the contact connection is broken.