Patent ID: 8097975
Filing Date: 2012-01-17
Classification: B60K,B60L,F02N,H02J,Y02T,Y10T

Abstract:
1. A drive system for a motor vehicle comprising: an internal combustion engine, the internal combustion engine having an associated electrical machine which can be operated as a starter/generator, a first energy store having a first pole interconnected by a first line to both a bidirectional DC/DC converter and a switching unit, and a second pole interconnected by a second line to said switching unit, said bidirectional DC/DC converter, and an electrical vehicle power supply system of the motor vehicle having electrical loads utilized during motor vehicle operation, an inverter interposed between said electrical machine and said switching unit, and a second energy store having a first pole interconnected by said second line to the switching unit, the second pole of the first energy store, the bidirectional DC/DC converter, and the electrical vehicle power supply system of the motor vehicle, wherein the bidirectional DC/DC converter is arranged in parallel with the first energy store, wherein the switching unit contains a first semiconductor switch and a first diode between the inverter and the first line and a second semiconductor switch and a second diode between the inverter and the second line, and wherein said second pole of the first energy store and said first pole of the second energy store are at a common potential.