Bayerische Motoren Werke Aktiengesellschaft

B Ayerische M Otoren W Erke a Ktiengesellschaft

Marcel Fenkart

Juergen Gebert

Oliver Bohlen

Matthias Fleckenstein

Joachim Froeschl

Hans Glonner

Georg Goetz

Stefan Schinagl

Stephan Peuckmann

Jürgen Gebert

Oliver Grohe

A device is provided for determining the internal temperature of an electrochemical energy storage device, particularly for a motor vehicle. The internal temperature of a cell winding of the energy storage device is determined by calculation in a control device of the energy storage device by way of a thermal model for the energy storage device which is saved in the control device.

Device for determining the internal temperature of an energy storage device

A method is provided for determining the internal temperature of an electrochemical energy storage device, particularly for a motor vehicle. The internal temperature of a cell winding of the energy storage device is determined by calculation in a control device of the energy storage device by way of a thermal model for the energy storage device which is saved in the control device.

Method and device for determining the internal temperature of an energy storage device

An electrochemical energy storage cell is provided, in particular an accumulator or a double layer capacitor. In the energy storage cell a core tube, which is open on its two ends, runs through the energy storage cell. Leads may be disposed inside the core tube and gaseous decomposition products, issuing from the energy storage cell, may be vented through the core tube. Furthermore, a cooling of the energy storage cell may take place by way of the core tube. An electronic circuit arranged in the cell monitors parameters of the energy storage cell.

Electrochemical energy storage cell

A motor vehicle is provided with a capacitor device for storing electric energy. The capacitor device is specifically discharged by a short-circuiting switch, which is arranged in parallel to the terminal posts of the capacitor device, without any intermediary activity of a separate discharge resistor.

Motor vehicle with a capacitor device for storing electric energy

In a method for operating a hybrid vehicle, which includes an internal combustion engine and an electric machine as the propulsive drive, the electric machine operates in both motor and generator modes. Furthermore, there is an accumulator device, such as a capacitor assembly, for storing electric energy. The aim is to provide a method that guarantees an improved start-up operation of a hybrid motor vehicle in terms of fuel consumption and emission. This is achieved in that in the start-up operation the torque required on the basis of the request of the driver to drive the vehicle is divided between the internal combustion engine and the electric machine, as a function of the existing operating parameters of the vehicle.

Method for operating a hybrid motor vehicle

A method and device for determining a driving torque correction factor for compensating the driving torques of a drive unit including a first drive device and a second drive device, both of which act with their driving torque on a common drive shaft. The method includes specifying and setting a desired driving torque for one of the two drive devices, adjusting a brake torque for the other of the two drive devices to a brake torque value, which is equivalent to the value of the actual driving torque (that occurs on the basis of the desired driving torque) of one of the two drive devices, and determining the correction value as a function of the specified desired driving torque of the one drive device and as a function of the brake torque value of the other drive device, the brake torque value being adjusted at the time of the compensation of the torques.

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Munich, Germany

Marcel Fenkart