Robert Boschgmbh

Samsung Sdi Co., Inc.

Volvo Car Corporation

Lithium Energy and Power Gmbh & Co. Kg

Gs Yuasa International Ltd.

Jens Becker

Thomas Lich

Andre Boehm

Josef Kolatschek

Triantafyllos Zafiridis

Christoph Kroener

Olivier Cois

Christoph Brochhaus

Christian Korn

Christel Sarfert

Michael Erden

Peter Harda

Alfons Doerr

Armin Steck

Anders Axelson, Ii

Ulrich Lange

Stephan Rittler

Joerg Poehler

Joachim Sohns

Hansjoerg Markus Hild

Vincent Scharff

Christian Rauh

Olaf Koerner

Marcus Hiemer

Anders Wogel

Marianne Heizmann

Paer Nilsson

Shweta Vijay Pawar

Anders Axelsson

Florian Stief

Maike Moldenhauer

Aleksandar Aleksandrov

Melwin Pascal Watterott

Peter Harda°

The presented invention relates to a method for operating an electrical energy store, the ageing behaviour of which is estimated by means of an expected ageing profile, wherein a rapid-charging profile, which is to be used, of the electrical energy store is ascertained depending on a comparison between a detected state of ageing of the electrical energy store and a desired state of ageing, which is determined by means of the expected ageing profile, of the electrical energy store.

Method for operating an electrical energy store

A method for controlling a charging current limiting value for a battery management system. In one example, the method includes determining, for a measured temperature and a prescribed state of charge, reference currents for various time intervals; calculating a corresponding reference time constant for each reference current by using a model for the calculation of a mean value of a charging current based on a continuous current; constituting a diagram for the relationship between the reference time constant and the reference current; determining a predictive time constant by the comparison of a measured value of a charging current with the reference currents; calculating a predictive limiting mean value of the charging current; and calculating a first predictive limiting value ifor a short predictive time t, a second predictive limiting value ifor a long predictive time t, and a third predictive limiting value ifor a continuous predictive time.

Method for controlling a charging current limiting value for a battery management system, battery management system

A method, device, and computer-readable medium for operating an electrical energy store is provided. The electrical energy store includes a storage cell for storing electrical energy and a control unit. State variables of the electrical energy store are detected. The state variables are transmitted to a computation unit outside of the electrical energy store. The electrical energy store is operated based on operating parameters provided by the computation unit.

A method for diagnosis of a temperature control means () of a battery pack () that comprises a plurality of battery cells () and a plurality of temperature sensors for measuring temperatures of the individual battery cells (), the battery cells () being arranged side by side in the battery pack (), in a longitudinal direction () of the battery pack (), and mechanically connected to each another, and the battery cells () being arranged on the temperature control means () and mechanically and thermally connected to it. A battery management system, and/or a battery pack () may be configured to execute the method. A vehicle may be fitted with a battery pack that carries out the method.

Method for diagnosis of a temperature control means of a battery pack

Method for balancing states of charge of an electrical energy store with a plurality of battery cells.

Method for balancing states of charge of an electrical energy store

Method for checking the plausibility of an electronic circuit for time measurement of an electrochemical energy storage system by means of a cooling behavior of at least one electrochemical energy store during non-use of the electrochemical energy store.

Method for checking the plausibility of an electronic circuit for time measurement of an electrochemical energy storage system

A method for controlling a temperature of a battery cell () in a battery module (), the method comprising the steps of: determining an initial temperature of the battery cell (); measuring a current (I) flowing into or out of the battery cell (); determining an actual temperature gradient of the battery cell () using a thermal battery cell model described by a differential equation, for which input values comprise at least the determined initial temperature and the measured current (I); comparing the determined actual temperature gradient of the battery cell () with a pre-defined desired temperature gradient; and automatically adjusting the current (I) flowing into or out of the battery cell () according to a result of the comparison.

Method for controlling a temperature of a battery cell

A method for estimating a current open-circuit voltage characteristic of a battery, comprising acquiring a portion of an actual open-circuit voltage characteristic of the battery, detecting or defining a significant point in the acquired portion of the actual open-circuit voltage characteristic, identifying a point, in a characteristic curve of an anode potential of the battery and/or in a characteristic curve of a cathode potential of the battery, that is associated with the significant point, shifting and/or scaling the characteristic curve of the anode potential and the characteristic curve of the cathode potential on the basis of the position of the significant point with respect of the associated point, until the acquired portion is simulated by combination of the shifted and/or scaled characteristic curves, and calculating the current open-circuit voltage characteristic on the basis of the shifted and/or scaled characteristic curves.

Method and device for estimating a current open-circuit voltage characteristic of a battery

The invention relates to a method for operating a battery unit comprising at least two series-connected battery cells, wherein a discharge process of at least one battery cell is carried out via a connectable discharge resistor in order to equalize states of charge of the battery cells. According to the invention, the value of the discharge resistance is ascertained during the discharge process of the at least one battery cell, and the previously ascertained value of the discharge resistance is taken into account during a subsequent discharge process of the battery cell.

Method for operating a battery unit

A method for cell balancing for a plurality of battery cells. Such a method involves the cell balancing being performed on the basis of a need that can be ascertained comparatively accurately. The method described above allows equalization of the states of charge, or cell balancing, based on the state of charge of the battery cells to be made possible, even without knowledge of the capacities of the in particular series-connected battery cells, such that the loss of charge as a result of the cell balancing is particularly low. Hence, a loss of charge as a result of unnecessary equalization of the charge can be prevented or at least significantly reduced.

Method for cell balancing for a plurality of battery cells, and battery system for performing such a method

A method for compressing measurement data which is transmitted from sensor control units via a data bus to a primary control unit of a battery management system for vehicles, includes transmitting a rate of change/slope of the measurement data to the primary control unit at a start of measurements. The method further includes transmitting deviations/differences in the measurement data from a current slope, and reconstructing, without loss of information, correct measured values from the rates of change/slope and the received deviations/differences with the primary control unit.

Data transmission method for a battery management system

The disclosure relates to a method for data transfer between electronic control devices, a battery and a motor vehicle with such a battery, which are particularly suitable for reducing the communications load on the communications bus between a main control device and one or more subordinate control devices, particularly between control devices of a battery management system. For this purpose, a method for data transfer between electronic control devices is provided, wherein the control devices comprise at least one main control device and at least one subordinate control device. Measurement values are detected by the at least one subordinate control device. Derived data is formed by the at least one subordinate control device from at least one part of the detected measurement values, and the derived data is transferred to at least one main control device.

Method for data transfer between electronic control devices, battery and motor vehicle with such a battery

A method for reducing a total loss of charge of battery cells by balancing states of charge includes checking boundary conditions as to whether a vehicle is in the park mode, whether a previous balancing step occurred in the past by at least a defined time period, whether a temperature of a balancing unit lies below an adjustable temperature limit and whether states of charge of all battery cells exceed a minimum state of charge. Additionally, the method includes determining a need for balancing such that a check is made as to whether a maximum difference of all states of charge of all battery cells is greater than an adjustable limit state of charge. Also the method includes, balancing by the balancing units if the first two steps of the method are affirmed. The balancing resistances are connected to respective battery cells for a predetermined time.

Method for reducing the total charge loss of batteries

A method and a control device for triggering passenger protection means for a vehicle are provided, at least one sensor signal from an accident sensor system being provided by an interface. Furthermore, at least two characteristics are generated from the sensor signal, which are mapped onto one single value range. The triggering of the passenger protection means occurs as a function of the at least two mapped characteristics.

Method and control device for triggering passenger protection means for a vehicle

A method of activating a passenger safety arrangement of a vehicle, the method including reading in a roll rate of the vehicle and triggering the passenger safety arrangement when, at a first time, at least one roll rate value is present, which exhibits a positive sign and is larger than a roll rate positive threshold value and when, at a second time after the first time, at least one roll rate value is present, which exhibits a negative sign and is smaller than a roll rate negative threshold value.

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Stuttgart, Germany

Jens Becker