Robert Boschgmbh

Philipp Zipf

Joachim Schadow

Andreas Kynast

Joachim Heizmann

Stefan Kern

Andreas Friese

Soenke Schuch

Christian Koepf

An electronics unit for an electrical device, in particular for a motor-operated electrical device, includes a printed circuit board populated, in particular on one side, and having a plurality of power transistors for actuating a multiphase load, in particular a multiphase electric motor, of the electrical device. Each phase of the load is assigned at least one power transistor. A first electrical damping element for damping transients caused by switching processes of the power transistors is connected in parallel with at least one of the power transistors of a first phase with a highest leakage inductance. No electrical damping element acting in this manner is provided for at least one of the other phases of the load, in particular for the phase with a lowest leakage inductance.

Electronics unit for an electrical device

In a method for operating an electric device, which includes a first storage battery pack, a second storage battery pack and an electrical load, no more than one storage battery pack is discharged at any given time to operate the load. In the process, the storage battery pack to be discharged is selected as a function of a temperature of the first storage battery pack and a temperature of the second storage battery pack and/or as a function of an internal resistance of the first storage battery pack and an internal resistance of the second storage battery pack.

Electric device and method for operating an electric drive

Growing community of inventors

Stuttgart-Zuffenhausen, Germany

Philipp Zipf