Preh Gmbh

Matthias Schernich

Darrell Parker

Maximilian Schneider

A circuit assembly for precharging a high-voltage DC voltage intermediate circuit for a motor vehicle is provided. The circuit assembly includes a high-voltage battery with battery terminals to which the intermediate circuit is electrically coupled. Intermediate circuit terminals of the intermediate circuit are electrically coupled to corresponding station terminals of a high-voltage charging station for providing a charging current, wherein the intermediate circuit terminals are each selectively, electrically coupled to corresponding feeding points of the intermediate circuit via charging current-connecting switching elements by opening and closing. The switching elements are opened prior to coupling the intermediate circuit terminals to the station terminals. Electric potentials of the feeding points are equalized to each other by a first precharging current. A voltage existing between the intermediate circuit terminals is equalized to a nominal charging voltage by changing the potential of at least one of the feeding points by a second precharging current.

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Bad Kissingen, Germany

Matthias Schernich