Patent · US Active

System for charging an energy store, and method for operating the charging system

US9331515B2 · kind B2 · utility

3Cited by

2References

2Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Peter Feuerstack · Ludwigsburg, DE
Erik Weissenborn · Stuttgart, DE
Martin Kessler · Rothenburg ob der Tauber, DE

Key dates

Filing date	Dec 29, 2011
Grant date	May 3, 2016
Priority date	—
Expiry date	Nov 16, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T90/14
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a system for charging at least one energy storing cell (5) in a controllable energy store (2) that is used to control and supply electric energy to an n-phase electric machine (1), wherein n ≧1. The controllable energy store (2) has n parallel energy supply branches (3-1, 3-2, 3-3), each of which has at least two serially connected energy storing modules (4), each said energy storing module comprising at least one electric energy storing cell (5) with a corresponding controllable coupling unit (6). The energy supply branches (3-1, 3-2, 3-3) can be connected to a reference bus (T-), and each energy supply branch can be connected to a phase (U, V, W) of the electric machine (1). The coupling units (6) bridge the respective corresponding energy storing cells (5) or connect same into the respective energy supply branch (3-1, 3-2; 3-3) dependent on control signals. The aim of the invention is to allow at least one energy storing cell (5) to be charged. This is achieved in that a neutral point (S) of the electric machine (1) and the reference bus (T-) can be connected to a secondary side (9) of a charging transformer (10).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.