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.
METHOD AND CIRCUIT ASSEMBLY FOR PRECHARGING A HIGH-VOLTAGE DC VOLTAGE INTERMEDIATE CIRCUIT FOR A MOTOR VEHICLE
2024-03-21
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
European Patent Office | 2018
|PRECHARGING CIRCUIT FOR CHARGING AN INTERMEDIATE CIRCUIT CAPACITOR
European Patent Office | 2015
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