Robert Boschgmbh

Jochen Fassnacht

Klaus Ries-Mueller

Martin Kessler

Ferdinand Grob

Gerhard Wetzel

Erik Weissenborn

Roland Norden

Thomas Huber

Peter Feuerstack

Michael Lehner

Bernd Eckert

Torsten Heidrich

Thomas Peuser

Armin Verhagen

Jochen Wessner

Clemens Schmucker

Christoph Keyl

Boris Buchtala

Klaus Beulich

Cornelius Liebenow

Boris Gendlin

David Gaenzle

Arno Schaumann

Maximilian Manderla

Nicole Weber

Dieter Kraft

Alessandro Moia

Hans-Peter Mueller

Tunan Shen

Thomas Winter

Fabian Lange

Steffen Rose

Georg Widmaier

Oliver Tschismar

Martin Kowatsch

Rainer Kern

Markus Schleyer

Stefan Spannhake

Silas Klug

Uwe Bauer

Laszlo Boros

Kay Hindorf

Gabriele Michalke

Johanna Link-Dolezal

Gernot Becker

Wolfgang Hau

Simon Trautmann

Robert Naman

Sven Reimann

Norbert Mueller

Gisbert Krauter

Alejandro López Pamplona

Ursula Bartenschlager

Jeff Booth

Gerhard Holzwarth

The invention relates to a vehicle drive train and to a method for operating a drive train with an electromotive drive (), wherein a rotational speed and a drive torque of the drive (), which are convertible via a toothed transmission stage () for an output (), and the drive () is controlled by means of a control signal (), wherein the control signal () has superimposed thereon a periodic torque change signal (), which is in phase with a tooth stiffness change of the toothed transmission stage (), wherein a signal strength of the torque change signal () is lower with decreasing tooth stiffness than with increasing tooth stiffness.

Method for operating a drive train, and vehicle drive train with electromotive drive

A method for laterally stabilizing a single-tracked motor vehicle, driven with the aid of an electric motor, that is in a vertically aligned state and at a standstill. The front wheel of the motor vehicle has a steering angle in which the electric motor is controlled in such a way that it exerts drive torques on the motor vehicle that act in alternation in the forward direction and in the reverse direction.

Method and device for lateral stabilization for a single-tracked motor vehicle at a standstill

A method for determining an electrical capacitance in an intermediate circuit of an electric drive system. The electric drive system includes at least one first electrical energy source, which feeds the intermediate circuit, a drive unit, which has an inverter and an electrical load, the inverter being electrically connected on the input side with the intermediate circuit and on the output side with the electrical load, and a DC voltage converter, which is electrically connected with the intermediate circuit and measures a voltage in the intermediate circuit by high frequency sampling. The electrical capacitance in the intermediate circuit is determined from the voltage in the intermediate circuit measured by the DC voltage converter. Also described is a motor vehicle, which includes an electric drive system for implementing the method.

Method for determining an electrical capacitance in an intermediate circuit of an electric drive system

In a vehicle electrical system, a method supplies a number of consumers of the system, which consumers are classified with different safety classifications, the differently classified consumers being supplied power from either one or more of a plurality of electrical subsystems according to their classifications or lack of classification.

Vehicle electrical systems

The invention relates to a DC-DC converter which is designed to supply a low-voltage network comprising a low-voltage battery and a battery sensor circuit with a low voltage, having a pulse generation device which is designed to feed electrical pulses into the low-voltage network in order to test the low-voltage battery using the battery sensor circuit.

Low-voltage network with a DC-DC converter and method for testing a low-voltage battery by employing pulses feed to the low-voltage battery to sense either voltage or current response

The invention relates to a device and method for discharging an energy accumulator (C), in particular an intermediate circuit capacitor, in a high-voltage grid (), in particular in a direct current intermediate circuit in a motor vehicle, having a direct current converter () connected downstream of the high-voltage grid (), a low-voltage grid () connected downstream of the direct current converter (), an power grid () connected downstream of the direct current converter () and parallel to the low-voltage grid () for supplying energy to a control circuit () of the direct current converter (), and a first controllable switching element (S) which is connected to the connecting line between the direct current converter () and the low-voltage grid () and by means of which, in the event of a disturbance of the low-voltage grid (), the direct current converter () and the power grid () can be disconnected from the low-voltage grid (). The power grid () is connected to the direct current converter () via a first electrical component () which prevents a backflow of current from the power grid () into the direct current converter ().

Device and method for discharging an energy accumulator in a high-voltage grid

The invention relates to a system () with a battery charging device () with output terminals and an vehicle electrical system power supply stage (). The vehicle electrical system power supply stage has a step-up/step-down converter (), which is designed to raise an input voltage of the vehicle electrical system power supply stage to an intermediate circuit voltage, a direct current intermediate circuit (), which is coupled to the step-up/step-down converter () at intermediate circuit nodes (), and a vehicle electrical system d.c.-d.c. converter (), which is coupled to the direct voltage intermediate circuit at the intermediate circuit nodes, and which is designed to convert the intermediate circuit voltage into a direct voltage for a vehicle electrical system (), the output terminals of the battery charging device () being coupled to the direct voltage intermediate circuit () via the intermediate circuit nodes ().

System with battery charging device and vehicle electrical system power supply stage

A method for operating a drive device of a vehicle, in particular a motor vehicle, which has an internal combustion engine, at least one electric machine, and at least one heatable electric accumulator, in particular a lithium ion battery, power being drawn from the electric accumulator for starting the internal combustion engine with the aid of the electric machine. It is provided that, after the start of the internal combustion engine and until the heated electric accumulator reaches a predefined minimum temperature, the electric accumulator is operated without load. Furthermore, a drive device for a vehicle, in particular for carrying out the above-described method is provided.

Method for operating a drive device, and a drive device

The invention relates to a method for charging energy storage cells of an energy storage device with a plurality of energy storage modules which are connected in series in an energy supply line, each energy storage module comprising an energy storage cell module which has at least one energy storage cell and comprising a coupling device with coupling elements. The coupling elements are designed to selectively connect the energy storage cell module in the energy supply line or to bridge the energy storage cell module. The method consists of the following steps: coupling the output connections of the energy storage device to a DC voltage source, controlling the coupling devices of all the energy storage modules in order to bridge the energy storage cell modules in the energy supply line for a first specified period of time, and controlling the coupling devices of at least one first energy storage module in order to connect the energy storage cell module of the first energy storage module in the energy supply line for a second specified period of time after the first specified period of time has elapsed.

Method for charging the energy storage cells of an energy storage device, and rechargeable energy storage device

The invention relates to a system () for high-voltage disconnection in a vehicle having at least two high-voltage carrying components (), each component having a housing (), at least one connecting element for a data bus () and at least one connecting element for a high-voltage supply (), each high-voltage carrying component () being designed to detect locally an event which is intended to trigger a high-voltage disconnection, wherein said system is characterized in that each high-voltage carrying component () is designed locally to trigger a high-voltage disconnection of the high-voltage carrying component () as a reaction to the detection of the event. As an advantageous development, access to components having a hazardous voltage is possible only after the connecting element of the data bus has been removed, the removal or disruption of which leads to rapid disconnection of the electric system.

System and method for high-voltage disconnection in a vehicle

In a jump-starting method between an electric vehicle providing a jump-start and an electric vehicle receiving a jump-start, the electrical systems of the two electric vehicles are temporarily interconnected electrically during the time of the jump-starting.

Jump-starting method and device for implementing the method

A circuit is described for operating an auxiliary unit for starting internal combustion engines via a starter battery. The circuit is configured to receive a state-of-function signal, a state-of-charge signal and/or a state-of-health signal from a battery-management system. The respective signals indicate whether the starter battery is capable of operating the auxiliary unit, what state of charge the starter battery has and whether the starter battery is damaged. The circuit is configured to draw electrical energy from a high-voltage battery, connected to the circuit, when the state-of-function signal indicates that operation of the auxiliary unit by the starter battery is not possible, when the state-of-charge signal indicates that the state of charge of the starter battery is too low to operate the auxiliary unit and/or when the state-of-health signal indicates that the starter battery is damaged.

Circuit for operating an auxiliary unit for starting internal combustion engines

The invention relates to a method and a device for power management of an electrical drive for a hybrid vehicle, wherein the method comprises the following steps: detecting (S) an adjustable power requirement for the electrical drive device and an available electrical battery capacity of the electrical energy store by means of a detecting unit (); comparing (S) the detected adjustable power requirement to the detected available electrical battery capacity by means of a control unit (); and deactivating (S) at least one of the electrical consumers in dependence on criteria specified by the control unit for one or a plurality of specified time intervals by the control unit (), if the comparison results in a lower available electrical battery capacity than the adjustable power requirement.

Method and apparatus for power management of an electric drive for a hybrid vehicle

A circuit arrangement for de-exciting an excitation winding of a synchronous machine in the event of a fault, including a control circuit for controlling a current flow through the excitation winding, it being possible to apply a positive control voltage to the excitation winding for excitation and a negative control voltage for rapid de-excitation, and including a protective circuit which is parallel-connected to the excitation winding and which does not permit a current flow over the protective circuit in the event of rapid de-excitation and which forms a current path for limiting the voltage and de-exciting the excitation winding if at least one connecting line between the control circuit and the excitation winding is interrupted.

Circuit arrangement for limiting the overvoltage of an excitation winding of a synchronous machine having rapid de-excitation

An energy storage system, in particular a battery having a plurality of battery cells. These battery cells are accommodated in a first container. The first container is separated from a second container by a separating element, which allows for establishing a pressure difference &#x394;p for expansion of a gas out of the first container into the second container.

Emergency cooling device

Growing community of inventors

Calw, Germany

Jochen Fassnacht