Robert Boschgmbh

Samsung Sdi Co., Inc.

Andreas Gleiter

Andy Tiefenbach

Christian Korn

Armin Steck

Frank Schneider

Joerg Christoph Wilhelm

Markus Zink

Peter Bauckhage

Jan Salziger

Marianne Heizmann

Sven Landa

Daniel Manka

Manuel Maenner

Gilles Desmond Fomen

The invention relates to a method for ascertaining an insulation resistance () of a test object () to be examined, wherein a decoupling capacitor () having a first capacity, and a measuring capacitor () having a second capacity are connected in series with the test object () in such a way that the decoupling capacitor () and the measuring capacitor () form a low-pass with the insulation resistance () of the test object (), wherein a predetermined voltage () is applied to the series connection, the measuring capacitor voltage () declining on the measuring capacitor () is ascertained, and, by means of an evaluation unit (), considering the first capacity, the second capacity and the ascertained measuring capacitor voltage (), the insulation resistance () of the test object () is determined. The invention also relates to a device () for ascertaining an insulation resistance () of a test object () to be examined, said device () having a circuit assembly, a measuring unit () and an evaluation unit (). The invention further relates to a high-voltage battery system having a device () according to the invention for ascertaining an insulation resistance ().

Method and device for ascertaining an insulation resistance, and high voltage battery system having a device of this type

The disclosure relates to a method for state of charge compensation of a battery having a plurality of battery units. The method comprises the steps of calculating a depth of discharge of each battery unit after the battery units have been charged, calculating an available charge of each battery unit before the battery units are charged, calculating a state of charge compensation requirement value on the basis of the calculated depth of discharge and the calculated available charge for each battery unit, and discharging each battery unit on the basis of the calculated state of charge compensation requirement value. The disclosure also relates to a method for charging a battery which has a plurality of battery units. Also specified are a computer program and a battery management system set up to perform the method, and a battery and a motor vehicle having a drive system connected to such a battery.

Method for state of charge compensation of a battery and method for charging a battery

A method for reducing a total charge loss of battery cells by equalizing states of charge includes making an initial check as to whether a temperature of at least one balancing unit lies below a preselectable temperature limit. Thereupon a check takes place as to whether a charging process of the battery cells has completed and the state of charge of the battery cells is &#x3e;90%. A determination then follows as to whether a maximum state of charge difference between battery cells lies above an adjustable limit (DELTA_SoC).

Method for equalizing different states of charge of batteries

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Stuttgart, Germany

Andreas Gleiter