Zf Friedrichshafen Ag

Stefan Hain

Michael Sperber

Ake Ewald

Fabian Hohmann

Johannes Hager

Michael Meiler

ChandraGupta Hazarika

An inverter has at least one current phase along a first axis and an input-side current connection for each phase, for receiving a DC input current. The phase(s) output AC output current generated from the DC input current, which is generated by a semiconductor bridge circuit. An intermediate circuit connected in parallel to the bridge circuit has at least one capacitor and heat sink between the intermediate circuit and the bridge circuit. The bridge circuit lies on the heat sink. The bridge circuit has at least one half bridge for each phase, formed by a high side switch and an opposing low side switch, connected in parallel, and each of the phases is located between the associated high and low side switches and on the heat sink, and each high and low side switch is electrically connected directly to the respective phase via a first electrical contact connection.

Inverter structure of an electronic module for an electric drive of a vehicle

A control apparatus for operating an electric drive for a vehicle may include one or more of the following: a plurality of power module, which has one or more power semiconductors; an intermediate circuit capacitor, which is connected in parallel to the power module; a cooler for dissipating heat generated by the power module; an interconnect device for obtaining electrical contact to the power module, where the interconnect device has a first section and a second section at an angle to the first section, and where the first section and the second section are each perpendicular to a main plane of the power module.

Control apparatus for operating an electric drive for a vehicle having first and second power modules with a cooler therebetween and related method

A power module for operating an electric vehicle drive may include one or more of the following: a plurality of semiconductor components; an intermediate circuit capacitor connected in parallel to the semiconductor components; a heatsink for the removal of heat generated by the semiconductor components, where the heatsink is located between the semiconductor components and the intermediate circuit capacitor; and an intermediate circuit line that electrically connects the intermediate circuit capacitor to the semiconductor components. The intermediate circuit line may extend perpendicular to a direction of flow for the coolant in the heatsink on a side of the semiconductor components facing away from the heatsink.

Power module for operating an electric vehicle drive with a reduced leakage inductance

Method for measuring an operating temperature of a power module () that is used for operating an electric vehicle drive, the power module () comprising a plurality of semiconductor switching elements () and drive electronics (), wherein the semiconductor switching elements () can be switched by the drive electronics () in such a way that the semiconductor switching elements () allow or interrupt a drain-source current in order to convert the direct current fed into the power module () at the input side into an output-side alternating current, wherein the method comprises measurement of a voltage present at a point located on a side of a diode () that is connected in series with the semiconductor switching element () and that faces away from the semiconductor switching element (), wherein the method comprises measurement of a drain-source current of the semiconductor switching element () that is generated by a current source (), wherein the method comprises determination of a mathematical dependency between the measured voltage and the measured current.

Power module for the operation of an electric vehicle drive with improved temperature determination of the power semiconductor

A power module for operating an electric vehicle drive, comprising: numerous power switches, each of which has a power semiconductor; a control electronics for controlling the numerous power switches to generate an output current based on an input current; wherein the control electronics also comprises a temperature unit configured to detect an operating voltage and operating current in the power semiconductor, and determine the temperature of the power semiconductor based on the operating voltage and operating current.

Power module for operating an electric vehicle drive with improved temperature determination of the power semiconductors

A power module for operating a vehicle, in particular an electric vehicle and/or a hybrid vehicle, comprising numerous semiconductor components, which form at least one topological switch; an input contact for supplying an input current to the semiconductor components; a control electronics for controlling the semiconductor components, to generate an output current based on the input current; an output contact for outputting the output current; wherein the control electronics is configured to set a gate current for one of the semiconductor components based on one or more status parameters for the semiconductor component.

Power module for operating an electric vehicle drive system

The invention relates to an electronic module for an electric drive in a vehicle, comprising an input-side electrical connection for inputting an input current generated by an energy source; an intermediate circuit with a capacitor; a semiconductor bridge circuit, connected in parallel to the intermediate circuit, wherein the bridge circuit comprises a high-side switch, and a low-side switch connected in series to the high-side switch, wherein the high-side switch is connected to the input-side electrical connection via a first current path, wherein the low-side switch is connected to the input-side electrical connection via a second current path, wherein the first current path and the second current path are the same length; and an output-side electrical connection for outputting an output current generated by the bridge circuit from the input current.

Electronic module for an electric drive of a vehicle with current paths of equal length for a highside switch and a lowside switch

A control apparatus for operating an electric drive for a vehicle may include one or more power modules, which have one or more power semiconductors; an intermediate circuit capacitor, which is connected in parallel to the power module(s); a cooler for dissipating heat generated by the power module(s); and an interconnect device for obtaining electrical contact to the power module(s), wherein the cooler extends over at least two main planes forming an angle to one another.

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Haag, Germany

Stefan Hain