System and method for charging the energy storage cells of an energy storage device

US9343914B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Ingo Dwertmann · Heilbronn, DE
• Peter Feuerstack · Ludwigsburg, DE
• Karlheinz Lunghard · Laufenburg (Baden), DE
• Wolfgang Haas · Schömberg, DE
• Erik Weissenborn · Stuttgart, DE
• Martin Kessler · Rothenburg ob der Tauber, DE

Key dates

• Filing date: Oct 24, 2012
• Grant date: May 17, 2016
• Expiry date: Apr 3, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/70
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The invention relates to a method for charging the energy storage cells of an energy storage device, which comprises: n first output connections, wherein n>1, for issuing a supply voltage at each of the output connections, a second output connection, wherein a charging device can be connected between the first output connections and the second output connection, and n parallel-connected energy supply branches, which are each coupled between a first output connection and the second output connection, wherein each of the energy supply branches comprises a plurality of series-connected energy storage modules, which each comprise an energy storage cell module comprising at least one energy storage cell, and a coupling device having coupling elements that are designed to selectively connect or bridge the energy storage cell module in the respective energy supply branch. The method according to the invention comprises the following steps: determining a maximum possible charging voltage of a charging apparatus, which provides a charging voltage for the energy storage device; determining the maximum number of the energy storage cell modules of an energy supply branch at which the sum of th…