Audi Ag

Conti Temic Microelectronic Gmbh

Hochschule Ingolstadt

Josef Winkler

Michael Wansner

Christian Meixner

Thomas Hoffmann

Frank Vollmer

Markus Störmer

Tassilo Scholle

Thomas Hackner

Alfred Ottowitz

Gerhard Hinkel

Johannes Pforr

Bernhard Stock

Lars Nitz

Rainer Ertel

Karin Vogtherr

Bernd Schäfer

Bernd Schafer

Siegfried Achhammer

A drive device for a motor vehicle, with a first drive assembly, a second drive assembly, and a planetary gearing, via which the first drive assembly and the second drive assembly, which has a drivable axle of the motor vehicle, can be operatively connected. In this case, it is provided that the first drive assembly can be operatively connected to the planetary gearing via a first clutch coupling, and the drivable axle can be operatively connected to the planetary gearing via a second clutch coupling, and the second drive assembly and an auxiliary assembly are permanently operatively connected to the planetary gearing.

Drive device for a motor vehicle, corresponding motor vehicle and method for operating a drive device

A method is disclosed for operating an electrical system of a motor vehicle, said electrical system comprising a first power source for providing an operating voltage for at least one partial onboard network of the electrical system and at least a second power source, wherein an electrically conductive connection of the first power source to the electrical system is monitored for an intentional interruption and, in the event of a detected intentional interruption of the electrically conductive connection, the at least one second power source of the electrical system is separated therefrom or deactivated. A motor vehicle with an onboard electrical system and a control device, for execution of the method, are also disclosed.

Method for operating an electrical system of a motor vehicle, and motor vehicle

A drive device for a motor vehicle, having an internal combustion engine that outputs to a gearbox or transmission. A plurality of gear ratios steps provides shiftable driving gears from a starting gear to a highest driving gear. The gearbox has at least one gear ratio step that provides an overrun gear, which cannot be engaged in the traction mode, but only in an overrun mode, in which the vehicle drags the internal combustion engine.

Drive device for a motor vehicle

Energy storage arrangement with a rechargeable energy storage device, wherein the energy storage device includes a plurality of lithium-based storage elements. The energy storage device is composed of three lithium-based storage elements and one lithium titanate-based storage element, or four lithium-titanate-based storage elements and one lithium-based storage element, or three lithium-based storage elements and two nickel metal hydride-based storage elements.

Energy storage arrangement

A storage element is disclosed including a plurality of lithium cells, which are arranged beside one another as a stack and are clamped via two clamping plates arranged at the ends, the plates being connected to each other via clamping elements, wherein the cell stack consists of prismatic cells inducing a housing and at least one pouch cell, which is accommodated in a cell holder, the external dimension of which corresponds to that of a housing of a prismatic cell.

Storage element including multiple lithium cells

An energy storage arrangement includes at least two rechargeable energy storage devices connected in parallel. A first energy storage device has a plurality of lead-based storage elements, and a second energy storage device has a plurality of lithium-based storage elements. Between charge state limits of 0 to 100% a charge state interval is achieved in which the nominal voltage of the second energy storage device is in a range between the maximum charging voltage and the nominal voltage of the first energy storage device.

In a motor vehicle with an adjustable coupling (intermediate device) between the (crank)shaft and floor contact elements (wheels), wherein the coupling is set in trailing throttle mode in such a way that the rotational speed of the shaft is reduced, in particular is adjusted to a predefined value, in order to reduce the internal losses of the drive, in particular an internal combustion engine.

Method for operating a motor vehicle in trailing throttle mode

Disclosed is a method allowing the advantageous operation of an on-board electrical system () of a motor vehicle without high energy expenditure. Provided is an on-board electrical system () comprising a vehicle battery (), an electrical load () and a double-layer capacitor () with a positive and a negative terminal (). Switching means () are provided that couple the positive terminal () with the vehicle battery () and the negative terminal () with the electrical load () in a first switching state, and that have at least one additional switching state. In the first switching state, an overvoltage can be compensated since the double-layer capacitor () is connected in series with opposite polarity to the vehicle battery (). Preferably, the polarity of the double-layer capacitor () can be reversed, and the latter can be bridged. The switching means () can also assume a switching state in which the electrical load () is decoupled from the vehicle battery ().

On-board electrical system for a motor vehicle and method for operating an electrical load

To operate a safety load in a vehicle electric system and compensate for power surges, a vehicle electric system has a vehicle battery, an electric load, an energy storage device in form of double-layer capacitor, and a switching assembly. In a first switching state, the system can compensate for a power surge by connecting the double-layer capacitor in series with the vehicle battery with opposite polarity. The vehicle electric system also has an additional load, for example for providing functionality that is relevant for the safety of the vehicle occupants. The additional load can be supplied with a voltage present at the vehicle battery and/or with a voltage present at the electric load. A DC-to-DC converter taps an electric voltage present at the energy store and converts the tapped voltage into a supply voltage, with which the additional load can be redundantly supplied.

On-board electrical system for a motor vehicle, motor vehicle and method for operating an on-board electrical system

Disclosed is a motor vehicle comprising a generator and at least one capacitor in which recuperation power generated in a thrust phase by the generator that can be operated as a recuperator can be stored. The excitation current (I) that limits the power of the generator () can be varied in the excitation circuit of the generator () in accordance with at least one vehicle-specific operational parameter and/or the actual charge of the capacitor ().

Motor vehicle comprising a recuperation generator

In order to prevent discharge of the battery () of a motor vehicle during operation of heavy current consumption devices, a circuit configuration is to be prepared which comprises essentially a rotary current generator (), a vehicle battery (), one or more current consuming devices (), and a controllable voltage converter (). The voltage converter () supplies an output voltage which varies as a function of the control signal of a control unit () of the current generator () and which supplies the current consuming device (). In the event of overloading of the rotary current generator () the output voltage of the voltage converter () is lowered in order to reduce the current consumption of the device () and prevent overloading of the rotary current generator () and discharge of the vehicle battery ().

Growing community of inventors

Kipfenberg, Germany

Josef Winkler