Robert Boschgmbh

Samsung Sdi Co., Inc.

Joerg Christoph Wilhelm

Christian Korn

Frank Stimm

Marc Heydemann

Andreas Gleiter

Ramanathan Swaminathan

Volkher Hofmann

Holger Wetzel

The present invention relates to a method for operating an energy storage unit having a plurality of battery cells () electrically connected to one another, each battery cell comprising an over-voltage protection device and a cell protection, wherein an adjacent battery cell voltage () on each battery cell () of the energy storage unit is monitored to determine whether said battery cell voltage is larger than a predetermined cell voltage minimum value (), wherein the energy storage unit is switched off when the battery cell voltage () drops below the cell voltage minimum value (). Thereby the battery cells () are monitored with respect to a triggering of the respective over-voltage protection devices, wherein the energy storage unit is further operated if a battery cell voltage () of a battery cell () of the energy storage unit exceeds the cell voltage minimum value () and the triggering of the over-voltage protection device of this battery cell () is thereby detected. The present invention further relates to a battery management system configured to carry out the method and an energy storage unit with such a battery management system.

Method for operating an energy storage unit, battery management system for performing such a method and energy storage unit with such a battery management system

Effecting a sleep mode of a cell supervision circuit of a rechargeable battery, in which the cell supervision circuit is not in the sleep mode after at least one sleep command sent to the cell supervision circuit, and in which a command for a software reset of the cell supervision circuit is sent to the cell supervision circuit after confirmation of the sleep mode is absent.

Method for effecting a sleep mode of a cell supervision circuit of a lithium-ion rechargeable battery and lithium-ion rechargeable battery

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

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Stuttgart, Germany

Joerg Christoph Wilhelm