Robert Boschgmbh

Samsung Sdi Co., Inc.

Sb Limotive Company Ltd.

Sb Limotive Germany Gmbh

Joachim Fetzer

Holger Fink

Stefan Butzmann

Hans Partes

Sarmimala Hore

Thomas Woehrle

Ralf Angerbauer

Stephan Leuthner

Thomas Wöhrle

Hans-Joerg Wolff

Markus Hald

Markus Kohlberger

Alexander Reitzle

Holger Reinshagen

Silvan Poller

Martin Gerlach

Rudi Kaiser

Klaus Wipfler

Andreas Bosch

Ralph Schmidt

Martin Lang

Michael Austen

Marc Heydemann

Jens Boehme

Thomas Woerhle

The invention relates to a method for producing an electrode stack for a battery cell, comprising the following steps: providing a ribbon-shaped anode element (), providing a ribbon-shaped cathode element (), providing a first ribbon-shaped separator element (), producing a ribbon-shaped composite element () by means of joining together the cathode element (), the anode element () and the first separator element (), simultaneously cutting the composite element () so as to produce multiple plate-shaped composite segments, stacking the produced composite segments to form a segment stack, stacking multiple segment stacks. The invention relates to a battery cell that comprises at least one electrode stack that is produced according to the method in accordance with the invention.

Method for producing an electrode stack for a battery cell and battery cell

The invention relates to a method for operating a battery cell (), in particular a lithium-ion battery cell, having at least one wound or stacked electrode assembly () arranged in a housing, said electrode assembly comprising a first electrode layer (), at least one separator layer () and a second electrode layer (), and a non-aqueous electrolyte containing one or more solvents and one or more conductive salts. When the battery cell () reaches a critical state, a chemical substance or a chemical substance mixture () is released, which forms complexes with the lithium ions () in the electrolyte ().

Method for operating a battery cell

The present invention relates to an energy storage unit () having a plurality of electrochemical cells (), wherein the electrochemical cells () each have a first outer face () comprising a first electrode (), and a second outer face () comprising a second electrode (), and the electrochemical cells () are electrically interconnected owing to the lined-up arrangement () of the electrochemical cells () by way of the outer faces () by means of the electrodes (). The energy storage unit () additionally comprises a first frame element () and a second frame element (), which frame elements are directly or indirectly connected to one another, wherein the first frame element () is arranged at one end () of the lined-up arrangement () of the electrochemical cells (), and the second frame element () is arranged at the other end () of the lined-up arrangement () of the electrochemical cells (). The present invention also relates to a battery cell () for use with an energy storage unit () according to the invention, and also to a method for producing a battery cell () of this kind.

Energy storage unit having a plurality of galvanic cells, battery cell for an energy storage unit of this kind, and method for producing the battery cell

A battery module comprising a plurality of chambers of a first type, a chamber of a second type, a plurality of chambers of a third type, at least one battery unit positioned in one of the plurality of chambers of the first type, and switching electronics positioned in the chamber of the second type. At least one of the plurality of chambers of the third type is positioned between one of the plurality of chambers of the first type and the chamber of the second type.

Connectable battery module

The disclosure relates to a power supply device for an electrically operable vehicle having an electric drive motor. The power supply device comprises an electric energy accumulator device, a range-extender with an internal combustion engine and a generator producing alternating current. The generator is mechanically connectable to the internal combustion engine, and the energy accumulator device is configured to be charged during driving with the alternating current from the generator. The energy accumulator device comprises several power supply connections on which respectively one of several controllable potentials can be provided, and several power supply branches having several serially connected power cell modules. Several power supply branches are interconnected on one end to the neutral point and each power supply connection is connectable to one end of a power supply branch.

Power supply device for an electrically operable vehicle and charging method

The disclosure relates to a method for battery module balancing of a battery, which comprises at least one battery module string, wherein the at least one battery module string has a plurality of battery modules connected in series or parallel, wherein each battery module has a single or a plurality of battery cells connected in parallel or in series and a coupling unit which is designed to switch on and off the battery module, said method comprising the steps of: determining a battery module state of at least two battery modules; switching off individual battery modules having a low battery module state, wherein the low state is defined by a defined ratio to an initial state of the battery modules or by a result of a comparison of all detected battery module states.

Method for battery module balancing and battery management system

A battery management system for a battery module string includes battery modules. The battery modules are electrically connectable to poles of the battery module string and individually electrically disconnectable. The battery module string is configured to generate an AC voltage by disconnecting and connecting the battery modules. The battery management system is configured to assign a respective first time period to each first battery module of the battery modules based on position of each first battery module in a battery module list. Each of the first battery module is electrically connected within a half-cycle of the AC voltage during the respective first time period.

Battery management system for generating a periodic alternating voltage based on battery state of wear

The disclosure relates to a method for determining a Coulombic efficiency of battery modules of a rechargeable battery with a circuit arrangement connected to the battery modules. The circuit arrangement has multiple current paths, each of which has a series circuit of switch modules and at least one power semiconductor element which can be operated in a linear mode in order to regulate the current flowing through the respective current path, and one of the battery modules is connected to each of the switch modules. Each of the switch modules is configured as a switch module for selectively connecting the connected battery module into the respective current path or to alternatively remove the connected battery module from the respective current path. In each of the current paths at least one of the battery modules is selected with the switch module.

Method and circuit arrangement for determining the Coulombic efficiency of battery modules

The disclosure describes a method for determining a coulombic efficiency of battery modules of a rechargeable battery using a circuit arrangement connected to the battery modules and that has a plurality of switching modules for selectively connecting every single one of the battery modules in a common current path or for alternatively isolating every single one of the battery modules from the common current path and from at least one power semiconductor element, which can be operated in linear mode, for regulating the current that flows through the current path. The switching modules are used to select at least one of the battery modules and to connect it in the current path while all other battery modules are isolated from the current path by the switching modules. The selected battery module is subjected to at least one discharge process and at least one charging process via the current path.

Method for increasing safety when using bursting discs (BV), wherein the bursting disc (BV) is suitable for releasing gas in a controlled manner from battery systems (B), wherein a signal, in particular a warning signal, is generated in dependence upon the spatial change at least of one site on the surface of the bursting disc (BV).

Method and device for increasing safety when using battery systems and bursting discs

A hard shell cell housing for an individual alkali metal cell includes a housing main body with an interior space that is configured to accommodate cell components of the individual alkali metal cell, and a housing cover configured to close off the interior space. The housing main body is formed at least substantially from plastic, and further includes at least one vapor barrier layer.

Hard shell cell housing with vapour barrier layer

The disclosure relates to a drive system for an electric vehicle, comprising an electric motor, a traction battery for supplying the electric motor, an asynchronous machine, and a combustion engine for driving the asynchronous machine, wherein the asynchronous machine is arrange for charging the traction battery upon a control signal to extend the range of the electric vehicle. The traction battery has a plurality of a battery lines having adjustable output voltage for generating voltage progressions which are phase-shifted relative to one another, and each battery pack line is not only provided for supplying one of the phase connections of the electric motor but is also connected to a phase connection of the asynchronous machine. The disclosure further relates to a corresponding method for charging a traction battery having a plurality of battery lines by means of an asynchronous machine and a combustion engine disposed in series therewith.

Drive system for an electric vehicle and method for charging a battery with a combustion engine

A battery system comprises a battery which includes a plurality of battery cells connected in series and two battery poles. The battery system further comprises at least one protection device, which is connected to the battery cells in series in such a manner that after the at least one protection device is tripped, a sum of voltages of the battery cells still connected in series does not exceed a limit voltage. The battery system also comprises a switching device which electrically connects the two battery poles, the switching device being configured to short-circuit the battery when a fault signal is detected, thus tripping the at least one protection device.

Battery system and motor vehicle

An encasement () for a battery cell () and for a battery system () wherein said encasement is in the form of a sheet and comprises a core layer (). This core layer () comprises carbon nanotubes. The invention further relates to a process for producing an encasement () which comprises initially coating a polymer substrate with an oxide material and applying carbon nanotubes to an oxide layer thus formed.

Encasement for a battery cell and for a battery system, process for producing said encasement, battery cell and battery system

A battery system for a motor vehicle having an internal combustion engine includes at least one starting circuit, a low-voltage on-board supply system, and an on-board supply system with an increased voltage. The starting circuit has a first battery and a starter that is configured to be connected to the first battery. The low-voltage supply system has at least one electrical consumer and a second battery configured to produce a first voltage. The supply system with increased voltage has an electrical generator and a third battery configured to produce a second voltage that is higher than the first voltage. The electric generator is configured to produce a third voltage that is higher than the second voltage. A first coupling connects the supply system with increased voltage to the low-voltage supply system and transfers energy therebetween. A second coupling connects the low-voltage on-board supply system to the starter circuit.

Growing community of inventors

Bad Ditzenbach, Germany

Joachim Fetzer