Apparatus and method for state of charge compensation for a battery system

US9787107B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Marcel Lutze · Nürnberg, DE
• Dragan Mikulec · Erlangen, DE
• Timur Werner · Erlangen, DE

Key dates

• Filing date: Jul 2, 2015
• Grant date: Oct 10, 2017
• Expiry date: Nov 9, 2035

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 an apparatus (2) for state of charge compensation having a battery system (10) for providing electrical energy comprising a series connection of a first battery sub-module (13) and a second battery sub-module (13′) having a first voltage conversion module (20′) wherein the first voltage conversion module (20′) is electrically connected to the second battery sub-module (13′), and wherein an electrical component (30) can be connected to the first voltage conversion module (20′) and can be supplied with electrical energy from the connected second battery sub-module (13′), wherein the apparatus (2) has a switching device (26) for switching an electrical connection between the first battery sub-module (13) and the first voltage conversion module (20′) and wherein the apparatus (2) has a control device (11) which is designed to control the switching device (26) such that electrical energy flows from the first battery sub-module (13) to the second battery sub-module (13′) and/or that electrical energy flows from the second battery sub-module (13′) to the first battery sub-module (13).