Audi Ag

Audi China

Roman Strasser

Andreas Petz

Gerald Rieder

Josef Rusch

Johann Scherer

Arne Herrmann

Christian Westermaier

Benjamin Knoeferl

A method for ascertaining a variable which relates to the state of a motor vehicle battery of a first motor vehicle and which indicates a count value in order to count a previously effective service life of the motor vehicle battery, and wherein a starting count value is provided in order to ascertain the count value and at least one parameter which influences the effective service life of the motor vehicle battery is detected. An estimated value for the influence of the at least one detected parameter on the effective service life of the motor vehicle battery is calculated on the basis of the at least one detected parameter, and the starting count value is increased to a current count value on the basis of the calculated estimated value.

Method for ascertaining a variable which relates to the state of a motor vehicle battery, counter device, and motor vehicle

A system with a high-voltage battery and a coupling device that couples the high-voltage battery to a high-voltage onboard power supply system of a motor vehicle. The coupling device couples a positive pole and a negative pole with corresponding phases of the high-voltage power supply system. The coupling device includes a current measurement device that measures the current flowing between a first electrically conductive connection and a first interface and/or the current flowing between a second electrically conductive connection and a second interface, an actuating device, and at least one first semiconductor switch, as well as at least one second semiconductor switch, which is coupled between the second electrically conductive connection and the second interface. The first semiconductor switch includes a first control electrode and the second semiconductor switch includes a second control electrode, which are coupled to the actuating device.

System with a high-voltage battery and a coupling device, motor vehicle, and method for operating a coupling device

A method for operating an electrical energy storage device for a motor vehicle, which energy storage device includes an energy storage unit, which has an energy storage unit voltage during normal operation, and which, during a charging process, is charged by electrical energy provided at a charging connection point at a charging voltage that is lower than the energy storage unit voltage. Based on the energy storage unit voltage and the charging voltage, the energy storage unit is divided into a plurality of energy storage subunits, at least one of which has an energy storage subunit voltage that corresponds to the charging voltage and is electrically connected to the charging connection point for the at least partial charging of the energy storage unit.

Method for operating an electrical energy storage device for a motor vehicle, and corresponding energy storage device

An assistance system to support non-contact charging of a battery of a motor vehicle, a corresponding method, and a corresponding motor vehicle having such an assistance system. In order to support non-contact charging, it is provided that, by a camera, a respective current image of a base plate of an off-board means providing electrical energy for the charging is captured. The captured image is compared to a predetermined reference image showing the base plate in a condition suitable for charging by a data processor. If a difference is detected, a request is automatically issued to a driver of the motor vehicle, prompting the driver to examine the base plate and confirm that the base plate is free of foreign objects interfering with charging.

Assistance system and method for supporting non-contact charging of a battery of a motor vehicle, and motor vehicle

An electric machine, to a motor vehicle with such an electric machine, and to a method for operating such an electric machine. The electric machine includes at least one sliding contact which is formed by a slip ring connected to a rotor and by at least one brush and via which an operating current flows during an operation of the electric machine. A control unit is configured to control the operation of the electric machine. The control unit is configured to verify a predetermined operating criterion of the electric machine and, if said operating criterion is met, to inject a cleaning current according to a predetermined scheme, which then flows independently of the operating current via the sliding contact and cleans said sliding contact in order to maintain or improve a current transfer capability of the sliding contact.

Electric machine, motor vehicle with electric machine, and method for operating an electric machine

An on-board network for a motor vehicle, having at least one energy storage system for the intermediate storage of electrical energy and an electrical power network, which has at least one energy-consuming device that can be operated with electrical energy from the energy storage system and at least one charging device for charging the energy storage system, wherein the energy storage system is electrically connected to the electrical power network by way of at least one contactor. In this case, it is provided that the energy-consuming device is present in a first electrical power sub-network of the electrical power network and the charging device is present in a second electrical power sub-network of the electrical power network.

On-board network for a motor vehicle and method for operating an on-board network for a motor vehicle

A transmission device for a motor vehicle includes a multi-speed transmission; a multidisc clutch assigned to the multi-speed transmission for changing gears of the multi-speed transmission, and an actuating device for actuating the multidisc clutch, wherein the actuating device has a wedge mechanism which is operatively connected with the multidisc clutch for actuating the multidisc clutch.

Transmission device for a motor vehicle

A carrier for coils of an electric machine includes a rotation-symmetrical carrier stack having laminations with axial slots which are configured to receive a wire of the coils. Adjacent ones of the slots are separated from one another by a slot wall. The carrier stack has circular end faces and is formed with slot openings for the slots. Electrically insulating material is applied upon at least the slot walls of at least one of the end faces to cover the slot walls at their end face and to electrically insulate the slot walls.

Carrier for coils of an electric machine

At least one electric motor is employed for propelling an electric or hybrid vehicle with a shiftable transmission. Upon reaching a shift threshold, a shift operation is performed in the transmission of the vehicle, wherein a value specifying the shift threshold is varied depending on at least one parameter. As the at least one parameter, a speed is used, at which a power provided by the at least one electric motor for propelling the vehicle has a maximum.

Method for operating an electric or hybrid vehicle with shiftable transmission and electric or hybrid vehicle

In a method of operating a drive device, a sound signal is generated as a function of at least one operational and/or state variable. An electric machine of the drive device is hereby as a sound generator to output the sound signal. The sound signal can be determined from a time gradient of the operational and/or state variable.

Method of operating a drive device and corresponding drive device

In a method for operating a vehicle () which can be driven with an electric motor () and in which the electric motor () is supplied with electric current from an energy store (), a state of charge of the energy store () and/or a remaining distance that can be traveled with the energy stored in the energy store () is stored in a memory device (). After the switching off the electric motor (), the state of charge of the energy store () and/or the remaining distance that can still be traveled by the vehicle with the energy stored in the energy store () is transmitted to a mobile terminal ().

Method for operating a vehicle capable of being driven by an electric motor

A device for displaying information in a hybrid vehicle comprises a display instrument that has multiple zones for displaying the current operating state of a combustion engine and of at least one electric motor in the hybrid vehicle. The power that the at least one electric motor can generate in a boost mode can be displayed in one of the zones. The display instrument includes a zone that can display the remaining time during which the at least one electric motor can be operated in the boost mode.

Growing community of inventors

Gaimersheim, Germany

Roman Strasser