Robert Boschgmbh

Samsung Sdi Co., Inc.

Peter Feuerstack

Stefan Butzmann

Klaus Ries-Mueller

Erik Weissenborn

Martin Kessler

Thomas Friedrich

Jochen Fassnacht

Hans Partes

Bernd Dittmer

Wolfgang Haas

Holger Sievert

Steffen Eppler

Calin Purcarea

Ingo Dwertmann

Karlheinz Lunghard

Taleb Janbein

Felix Frank

Sebastian Hawliczek

The invention relates to a method for operating a motor vehicle () which has an electrical machine () with at least three phases, an electrical energy store () and a power electronics system () having a plurality of switching elements, wherein the switching elements of the power electronics system () are actuated for electrically connecting the phases to the energy store (), in order to produce a generator deceleration moment. Provision is made for a driving situation of the motor vehicle () to be determined, wherein an actuation method is selected from amongst a group of at least two possible actuation methods according to the determined driving situation, and wherein the switching elements are actuated according to the selected actuation method.

Method for operating a motor vehicle, device for a motor vehicle, motor vehicle

The invention relates to a method for operating a charging device for charging an electric energy storage device from a first charge state to a second charge state. The first charge state is lower than the second charge state, and the charging device is connected to an interface. The charging device communicates with the energy storage device and ascertains the charge state thereof. In an additional step, the charging device obtains the efficiency characteristic field of the electric energy storage device and the efficiency characteristic field of the charging device. The invention relates to a method for operating a charging device for charging an electric energy storage device from a first charge state to a second charge state. The first charge state is lower than the second charge state, and the charging device is connected to an interface. The charging device communicates with the energy storage device and ascertains the charge state thereof. In an additional step, the charging device obtains the efficiency characteristic field of the electric energy storage device and the efficiency characteristic field of the charging device.

Method for operating a charging device

The invention relates to an overvoltage protection circuit () and a method for protecting a power semiconductor () from over-voltages. For this purpose, a voltage applied across a power semiconductor switch is first converted to a lower voltage signal corresponding to the voltage applied to the power semiconductor switch by means of a resistance voltage divider. The reduced voltage signal is then evaluated by means of an overvoltage detector, such as a Zener or suppression diode, and the power semiconductor switch to be protected is activated if the response voltage of said diode is exceeded. By lowering the voltage level by means of a voltage divider, a Zener or suppression diode having a lower voltage level can be used for monitoring the overvoltage, said Zener or suppression diode having improved operating properties in comparison with corresponding diodes having a higher voltage level.

Overvoltage protection circuit for a power semiconductor and method for protecting a power semiconductor from over-voltages

The present invention provides a low-inductivity and mechanically stable connection between a DC link capacitor and a switching module for a power electronic system. To this end, the DC link capacitor and the switching module are connected to each other via an electrically conductive, flexible connection arrangement of electrically conductive strips or films. The individual strips or films are spaced from each other via suitable isolation media.

Capacitor arrangement and method for operating a capacitor arrangement

The invention relates to a semiconductor switch and to a method for determining a current in the power path of a semiconductor switch. For this purpose, a semiconductor switch, according to the invention, has a plurality of sense connections, wherein each of said sense connections provides an individual output signal that is proportional to the current in the power path of the semiconductor switch. The evaluation of the current in the power path can be optimized by the appropriate selection of one of the plurality of sense connections in accordance with the current in the power path of the semiconductor switch.

Semiconductor switch and method for determining a current through a semiconductor switch

A system for charging at least one energy reservoir cell in a controllable energy reservoir for controlling/supplying electrical energy to an n-phase electrical machine. The controllable energy reservoir has n parallel energy supply branches each having at least two series connected energy reservoir modules, each encompassing at least one electrical reservoir cell having an associated controllable coupling unit. The energy supply branches are connectable to a reference bus and a respective phase of the machine. As a function of control signals, the coupling units interrupt the respective energy supply branch or bypass the cells or switch the associated cells into the respective energy supply branch. To enable charging of at least one cell, at least two phases of the machine are connectable via at least one respective freewheeling diode to a positive pole of a charging device, and the reference bus is connectable to a negative pole of the device.

Systems for charging an energy store, and method for operating the charging systems

The invention relates to an electrical drive system having: an energy storage device for generating a supply voltage and having at least one energy supply line, with one or more energy storage modules connected in series in the energy supply line, each module comprising an energy storage cell module with at least one energy storage cell and a coupling device with a plurality of coupling elements which is designed to selectively connect the energy storage cell module into the respective energy supply line or to bypass the same in the respective energy supply line; a fuel cell system which is coupled to the output terminals of the energy storage device and connected in parallel to the energy storage device; and a control device which is coupled to the energy storage device and is designed to control the coupling devices of the energy storage modules in order to adjust a supply voltage at the output terminals of the energy storage device which corresponds to an output voltage of the fuel cell system.

Method for providing a supply voltage and electrical drive system

Switchable energy storage device (), having: &#x2014;at least two energy storage modules () connected in series, wherein each energy storage module () comprises at least one electrical energy storage cell () which can be connected into an operating current circuit by means of a semiconductor switch (), characterized in that the energy storage device () has an electrically isolated, inductive coupling device () for charging the energy storage cells ().

Switchable energy storage device and method for operating a switchable energy storage device

The invention relates to a method for charging energy storage cells of an energy storage device with a plurality of energy storage modules which are connected in series in an energy supply line, each energy storage module comprising an energy storage cell module which has at least one energy storage cell and comprising a coupling device with coupling elements. The coupling elements are designed to selectively connect the energy storage cell module in the energy supply line or to bridge the energy storage cell module. The method consists of the following steps: coupling the output connections of the energy storage device to a DC voltage source, controlling the coupling devices of all the energy storage modules in order to bridge the energy storage cell modules in the energy supply line for a first specified period of time, and controlling the coupling devices of at least one first energy storage module in order to connect the energy storage cell module of the first energy storage module in the energy supply line for a second specified period of time after the first specified period of time has elapsed.

Method for charging the energy storage cells of an energy storage device, and rechargeable energy storage device

The invention relates to an energy storage device for generating an n-phase supply voltage for an electrical machine, where n&#x2267;1, or for an inverter, with n energy supply branches connected in parallel, each of which can be connected to one of n phase lines, each of the energy supply branches comprising a plurality of series-connected energy storage modules, each comprising: an energy storage cell module and a coupling device configured to selectively connect the energy storage cell module into the respective energy supply branch or to bypass said module, the energy storage cell modules of respective first energy storage modules of an energy supply branch each comprising at least one first energy storage cell, the energy storage cell modules of respective second energy storage modules of an energy supply branch each comprising at least one second energy storage cell, and the first energy storage cells having a lower internal resistance than the second energy storage cells below a predetermined temperature threshold.

Energy storage device, system with energy storage device and method for generating a supply voltage of an energy storage device

A system includes an n-phase separately excited electrical machine, wherein n&#x2267;1, and a controllable first energy store that has n parallel energy supply branches. Every energy supply branch includes a first connection that is connected to a respective phase connection of the electrical machine, and a second connection that is connected to a common reference bus. The reference bus is connected to a neutral point of the electrical machine via an exciter winding of the electrical machine.

System comprising an electrically excited machine

A method for heating energy storage cells of an energy storage system configured to generate an n-phase supply voltage. The energy storage system including n energy supply branches connected in parallel. Each energy supply branch coupled between an output connection and an equipotential frame, and each of the energy supply branches including a plurality of series-connected energy storage modules. Each energy storage module including an energy storage cell module having at least one energy storage cell and a coupling device having coupling elements configured to selectively connect or bridge the energy storage cell module in a respective energy supply branch. The method includes connecting the output connections of the energy storage system to input connections of an n-phase electrical machine, and coupling the output connections via a neutral point of the electrical machine.

Method for heating energy storage cells of an energy storage system, and heatable energy storage system

The invention relates to a controllable energy store () with n parallel energy supply branches (---), wherein n&#x2267;1, each said branch having a first energy supply sub-branch (---) and a second energy supply sub-branch (---) that is connected in parallel to said first energy supply sub-branch. Each energy supply sub-branch (------) has at least one energy storing module (), each of which comprises at least one electric energy storing cell () with a corresponding controllable coupling unit (). The coupling units () disconnect the energy supply sub-branch (------) or bridge the respective corresponding energy storing cells () or connect the respective corresponding energy storing cells () into the respective energy supply sub-branch (------) dependent on control signals. The energy storing cells () of the energy storing modules () in the first energy supply sub-branch (---) and the energy storing cells () of the energy storing modules () in the second energy supply sub-branch (---) are arranged in an anti-parallel manner.

Controllable energy store and method for operating a controllable energy store

A system for charging at least one energy reservoir cell in a controllable energy reservoir serving to control/supply electrical energy to an n-phase electrical machine (n&#x2267;2). The controllable energy reservoir has n parallel energy supply branches each having at least two series connected energy reservoir modules, each encompassing at least one electrical energy reservoir cell having an associated controllable coupling unit, are connected to a reference bus, and are connected to a respective phase of the machine. As a function of control signals, the coupling units interrupt the respective energy supply branch or bypass the associated reservoir cells or switch the associated reservoir cells into the respective energy supply branch. To charge at least one cell, at least two phases of the machine are connectable via at least one respective free-wheeling diode to a negative pole of a charging device. The reference bus is connectable to the negative pole of the device. Those energy supply branches connected to those phases which are connectable to the negative pole of the device each have a contact point disposed between two energy reservoir modules and is connectable via at least one free-wheeling diode to a positive pole of the device.

System for charging an energy store, and method for operating the charging system

The invention relates to an energy storage device () for generating an n-phase supply voltage for an electric machine (), wherein n&#x2267;1, with n energy supply branches which are connected in parallel and which can each be connected to one of n phase conductors (), wherein each of the energy supply branches has a large number of energy storage modules () which are connected in series and which each comprise: an energy storage cell module () which has at least one energy storage cell () and a coupling device (), which is designed to connect the energy storage cell module () selectively into the respective energy supply branch or to bridge said energy storage cell module, wherein in each case at least one of the energy storage modules () also has in each case one heating element () for the at least one energy storage cell (); and a heating device (), which is connected to the heating elements () and which is designed to actuate the heating elements () for heating the energy storage cells () in the groups of energy storage modules ().

Growing community of inventors

Ludwigsburg, Germany

Peter Feuerstack