Bayerische Motoren Werke Aktiengesellschaft

Bmw Canada Inc.

B Ayerische M Otoren W Erke a Ktiengesellschaft

Benno Schweiger

Bernhard Kreppold

Saeid Habibi

Mohammed Farag

Jan Philipp Schmidt

Christoph Born

Jens Vetter

Christian Kulp

Edwin Knobbe

Armin Friegel

Tobias Hollweg

Matthias Fleckenstein

Hermann Zehentner

Werner Seliger

Stefan Roemersperger

Dieter Ziegltrum

Philipp Riemann

Isabella Eckel

Lorenz Makeschin

Othmar Winterling

Andreas Maerkl

Arne Menck

Sebastian Paul

Disclosed is a battery cell including an electrode, a housing, a cell interior inside the housing, a temperature sensor, and a heat-conducting part which differs from the electrode, is entirely or partially disposed inside the housing of the battery cell, and is thermally connected to the temperature sensor.

Battery cell comprising a temperature sensor

A method monitors the functional capability of the cooling system of an operating high-voltage accumulator for an electric drive unit of a motor vehicle. The method repeatedly measures the temperature of the high-voltage accumulator by use of a temperature sensor mounted on the high-voltage accumulator; checks whether the measured temperature value is above a cooling threshold temperature; determines a profile of the temperature of the high-voltage accumulator using a temporal sequence of the measured temperature values of the high-voltage accumulator which are above the cooling threshold temperature; and diagnoses that the cooling system is operating correctly if the temperature profile does not exceed a predetermined threshold.

Method for monitoring the functional capability of the cooling system of a high-voltage accumulator

In a method for estimating a voltage of a battery a given electrochemical battery model is provided, wherein one parameter of the electrochemical battery model is an open circuit potential. The open circuit potential is linearized. The voltage of the battery is estimated by means of the electrochemical battery model with the linearized open circuit potential.

Method and device for estimating a voltage of a battery

In a method for estimating a voltage of a battery a given battery model (BM) is provided, wherein the given battery model (BM) is a single particle model. A C-rate of the battery is determined. The battery model (BM) is adapted based on the C-rate. The voltage of the battery is estimated by means of the adapted battery model (BM).

A method determines a capacity of a battery cell of a high-voltage battery of a motor vehicle. The method receives at least three open-circuit voltage values of the battery cell; determines state of charge values of the battery cell from the open-circuit voltage values on the basis of a predetermined open-circuit voltage curve; forms at least two pairs of values by combining in each case two of the at least three open-circuit voltage values; determines respective charge throughput values of the battery cell which are specific to the pairs of values by integrating a measured current of the battery cell over a period between two measuring times of the associated open-circuit voltage values; determines respective capacity raw values which are specific to the pairs of values on the basis of the associated charge throughput value which is specific to the pairs of values and the associated state of charge values which are specific to the pairs of values; and determines the capacity on the basis of the at least two capacity raw values which are specific to the pairs of values.

Method for determining a capacity of a battery cell, evaluation device, monitoring apparatus, high-voltage battery and motor vehicle

A control device controls a preconditioning of at least one energy consumer in a motor vehicle and an energy store incorporated in the motor vehicle. The control device is designed to control the energy take-up of the energy consumer and the energy take-up of a charging device incorporated in the motor vehicle such that a difference is generated between the energy take-up of the energy consumer and the energy take-up of the charging device, which is compensated by an energy take-up of the energy store or by a release of energy from the energy store, with the result that the energy store is warmed by the power loss associated with the energy take-up or with the release of energy from the energy store.

Preconditioning of an energy store of a motor vehicle

A method tests a balancing circuit for a battery having a plurality of battery cells. The method detects first voltage states of the battery cells by way of a control unit; activates the balancing circuit with the aim of achieving a voltage equalization of at least two of the battery cells; detects second voltage states of the battery cells by way of the control unit; and determines a functional capability of the balancing circuit based on the first voltage states and the second voltage states of the battery cells by way of the control unit.

Method for testing a balanced circuit

A method is provided for automatically shutting off an internal combustion engine in a motor vehicle by way of a start-stop device, which automatically shuts off the internal combustion engine as soon as the predefined operating conditions are met. An automatic shut-off of the internal combustion engine is prevented when an actuation of a garage door opener for the electric displacement of the garage door is detected. A correspondingly designed start-stop device is provided for automatically shutting off the internal combustion engine, wherein a control unit is designed such that signals of the garage door opener and/or of a detection unit, which detects an electric opening of the garage door, can be received and the automatic shut-off of the internal combustion engine is permitted or prevented depending on the signals.

Method and device for automatically shutting off an internal combustion engine

Growing community of inventors

Munich, Germany

Benno Schweiger