Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Pascal Heusler

Maximilian Barkow

Timijan Velic

Naser Abu Daqqa

Patrick Fuchs

Leo Spiegel

Karl Dums

Thomas Schmid

Jannik Maier

Rainer Bautz

Stefan Gatzemann

A pulse inverter includes a pulse inverter housing, in which at least one power electronics is provided, wherein at least the pulse inverter housing is configured to be cooled by a flowing coolant through housing means. The power electronics includes at least one controller, a gate driver, and a semiconductor element. For switching a semiconductor element, the gate driver provides a turn-on voltage UGS and a turn-off voltage Uand is actuatable by the controller for this purpose. The controller includes control means, via which a withstand voltage UR<UGS is adjustable, whereby a power dissipation PV can be generated, causing the power electronics and/or the coolant to heat up.

Pulse inverter as well as powertrain and method for heating a coolant

A pulse inverter for operating an electric machine of a motor vehicle from a motor vehicle battery, including a housing for delimiting an interior, a power electronics system, provided in the interior of the housing, for converting direct current to alternating current, a first cooling circuit configured to dissipate heat from an outer side of the housing facing away from the power electronics system, and a second cooling circuit, which is separated from the first cooling circuit and communicates with the interior of the housing, configured to directly liquid-cool the power electronics system with an electrically insulating fluid. (FIG.)

Cooled pulse inverter for operating an electric machine of a motor vehicle

A method for the switched division of a high-voltage battery of a vehicle, which, for the purpose of charging the high-voltage battery, is connected to a charging column supplying a charging voltage of a specific voltage level, wherein the voltage level of the high-voltage battery results from a number M of series-connected modules of the same rated voltage, wherein the voltage level of the high-voltage battery corresponds to an integer multiple N of the voltage level of the charging voltage of the charging column, wherein the high-voltage battery is subdivided into N parallel-interconnected segments consisting of an equal number of modules by means of a first switch position of a number of power semiconductors.

High-voltage battery division for charging column connection

A contact rail device for an at least partly electrically driven motor vehicle. The contact rail device comprises at least one busbar for electrical contact-connection of an electric machine to a supply device for the electric machine In this case, the busbar comprises at least one compensation bow for compensation of temperature-dependent changes in length.

Contact rail device for an at least partly electrically driven motor vehicle

Growing community of inventors

Stuttgart, Germany

Pascal Heusler