Robert Boschgmbh

Samsung Sdi Co., Inc.

Rainer Kern

Andre Boehm

Jochen Fassnacht

Thomas Woehrle

Stephan Leuthner

Alexander Reitzle

Rudi Kaiser

Boris Gendlin

Dieter Kraft

Ralf Liedtke

Jannis Stemmann

Carsten Pipper

Wolfgang Hau

Frank Dallinger

Werner Denninger

Dieter Schmidt

Robert Naman

Ursula Bartenschlager

Jeff Booth

Gerhard Holzwarth

A method for operating a drive device of a vehicle, in particular a motor vehicle, which has an internal combustion engine, at least one electric machine, and at least one heatable electric accumulator, in particular a lithium ion battery, power being drawn from the electric accumulator for starting the internal combustion engine with the aid of the electric machine. It is provided that, after the start of the internal combustion engine and until the heated electric accumulator reaches a predefined minimum temperature, the electric accumulator is operated without load. Furthermore, a drive device for a vehicle, in particular for carrying out the above-described method is provided.

Method for operating a drive device, and a drive device

In a method for determining the state of charge of an electrical accumulator, individual cell voltages are recorded, and the highest and/or the lowest individual cell voltage is ascertained. A present maximum charge and/or a present minimum charge of the appertaining accumulator cell is determined using a characteristic curve and the highest and/or the lowest individual cell voltage.

State of charge determination for an electrical accumulator

A protective device for a test installation, the test installation being used for testing objects that have a tendency to burn and emit gas, in particular for testing lithium-ion batteries, and the test installation having a test chamber that is sealable via a door-type opening element with the interposition of a sealing element, and having a testing device configured in the test chamber for the objects. The test chamber includes a venting device for gases and is surrounded by a sealed enclosure.

Protective device for a test installation

Growing community of inventors

Stuttgart, Germany

Rainer Kern