Robert Boschgmbh

Gs Yuasa International Ltd.

Matthias Heil

Rostislav Rogov

Stefan Butzmann

Hans Partes

Tobias Richter

Peter Sinn

Albrecht Schwarz

Marco Friedrich

Bernhard Seubert

Christian Bernhardt

Sebastian Laich

Matthias Boesing

Axel Haas

Alexander Ross

A protective device for protection of a semiconductor switch against overvoltages during a deactivation process. A compensation signal is provided at an input of a driver stage for a semiconductor switch to be deactivated if the voltage at the output of the semiconductor switch exceeds a specified threshold, and simultaneously a request to open the semiconductor switch is detected at an input of the driver stage for the semiconductor switch. The compensation signal is limited to a specified duration. On the basis of the compensation signal provided in the aforementioned manner, the driver stage for the semiconductor switch partly controls the semiconductor switch in order to prevent an excessively quick opening of the semiconductor switch.

Method for protecting a semiconductor switch, protective device for a semiconductor switch, and control circuit for a semiconductor switch

A method for detecting a short circuit within an energy store. The method includeds registering a current which flows through the energy store, registering a first voltage which is made available by the energy store at a first time, registering a second voltage which is made available by the energy store at a second time following the first time, determining whether the energy store is in a state of charge, a discharge state or in an open-circuit state, executing a first detection step when the energy store is in an open-circuit state, a second detection step when the energy store is in a state of charge, and a third detection step when the energy store is in a discharged state, and determining whether a short circuit is present based on the first and second voltage.

Method for detection of short circuits within an energy storage device

The present invention relates to a circuit arrangement () for operating an electrical machine () in a motor vehicle, having a first electrical drive train (-) in which a first battery direct converter (-) can be connected to the electrical machine () via a first switching device (-); a second electrical drive train (-) in which a second battery direct converter (-) can be connected to the electrical machine () via a second switching device (-); a third electrical drive train (-) in which a third battery direct converter (-) is connected to the electrical machine (), one converter connection of which can be connected to the second drive train (-) via a third switching device (-) and the other converter connection of which can be connected to the second drive train (-) via a fourth switching device (-); a DC voltage section () for providing a DC voltage for a vehicle electrical system, which DC voltage section is connected to the first, second and third drive trains (---) via a rectifier (---) in each case; and a charging section () for supplying a charging current to the first, second and third battery direct converters (---), which charging section is connected to the first drive train (-) and to the third drive train (-).

Circuit arrangement for operating an electrical machine in a motor vehicle with provision of a DC voltage

The invention relates to an energy storage module for an energy storage device, comprising an energy storage cell module which has a storage cell series circuit of at least two energy storage cells, comprising a coupling device, which comprises a plurality of coupling elements and is designed to selectively connect the energy storage cell module into an energy supply line of the energy storage device or to bypass the energy storage cell module in an energy supply line, and comprising a driver module which is designed to generate drive signals for the plurality of coupling elements. The driver module has a first energy supply connection and a second energy supply connection. The first energy supply connection is connected to a first end connection of the energy storage cell module via a first supply line and to a first node point between two energy storage cells of the storage cell series circuit via a second supply line. The second energy supply connection is connected to a second end connection of the energy storage cell module via a third supply line and to a second node point between two energy storage cells of the storage cell series circuit via a fourth supply line. The second node point lies between the first node point and the first end connection.

Internal energy supply of energy storage modules for an energy storage device, and energy storage device with such an internal energy supply

An inverter for an electric machine as well as a method for operating an inverter for an electric machine. In this context, the inverter has at least one output stage unit for producing a connection between the electric machine and a power supply network, a control unit for controlling the at least one output stage unit, a supply unit independent of the power supply network for the power supply of the output stage unit(s), at least one emergency operation control assigned to the output stage unit(s) for controlling the output stage unit(s) in the fault case, as well as at least one emergency operation supply assigned to the output stage unit(s) for generating a power supply for the output stage unit(s) from the power supply network in the fault case.

Inverter for an electric machine and method for operating an inverter for an electric machine

Growing community of inventors

Moeglingen, Germany

Matthias Heil