Method and charging device for charging a high-voltage battery of an electric vehicle

US11673482B2 · kind B2 · utility

Assignees

• Preh GmbH · DE
• Brusa Elektronik AG · CH

Inventors

• Marc Neitz · Oberelsbach, DE
• Alexander Matthias · Kaltennordheim, DE
• Axel Krause · Lechenich, DE
• Andreas Kruspan · Grabs, CH
• Marc Hanselmann · Frümsen, CH
• Hannes Hobi · Sargans, CH
• Rudolf Meusburger · Bezau, AT

Key dates

• Filing date: Dec 18, 2020
• Grant date: Jun 13, 2023
• Expiry date: Oct 8, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T90/14
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for charging a high-voltage battery of an electric vehicle, comprising: providing the high-voltage battery having a nominal battery voltage; providing a charging station outputting a DC charging voltage less than the nominal battery voltage; draining current between a first battery terminal and a protective earth terminal such that the voltage between the first battery terminal and the protective earth terminal essentially matches with the voltage between a first charging terminal and the protective earth terminal, and boosting the voltage at a second charging terminal of the charging station to match the charging voltage with the nominal battery voltage.