Robert Boschgmbh

Erik Weissenborn

Martin Kessler

Peter Feuerstack

Jochen Fassnacht

Wolfgang Haas

Holger Rapp

Calin Purcarea

Thomas Bossmeyer

Karlheinz Lunghard

Ingo Dwertmann

Tobias Ruck

Dimitra Neufeld

Sebastian Udich

An electrical machine (), in particular a machine which can be operated in electric generator mode and/or in electric motor mode, comprising a rotor () which has a shaft (), wherein a part of a turbomachine () is formed on the shaft () and the part is a fan (), wherein the fan () has a circumference () with a circumferential direction (), and a housing () of an electrical unit () is adjacent to the fan () and serves as a housing of the turbomachine (), and there is a gap () between the fan () and the housing () of the electrical unit (), characterized in that the gap () has a radial width (BR) which has a different magnitude depending on a circumferential position (U) on the fan () which is arranged on the shaft ().

Electrical machine

A capacitor () wherein the first voltage layer () and the second voltage layer () form an overlap region () in which the first voltage layer () and the second voltage layer () are arranged parallel to one another, separated by a gap (), on a base side () of the capacitor (), directly above one another, and wherein the at least one first pole terminal () extends in lateral continuation of the first voltage layer () and, in parallel with this, the at least one second pole terminal () extends in lateral continuation of the second voltage layer () over and beyond the overlap region (), and in this way form at least one contact lug pair () protruding from the base side () of the capacitor ().

Capacitor, in particular an intermediate circuit capacitor for a multi-phase system

The disclosure relates to a power transmission arrangement having an electromagnetic convertor unit, the input side of which can be coupled to an AC voltage source, a first DC voltage circuit, the input side of which is coupled to the electromagnetic converter unit and the output side of which can be coupled to a first electrical DC voltage sink, and which is designed to provide a first DC voltage on the output side, and a second DC voltage circuit, the input side of which is coupled to the electromagnetic converter unit and the output side of which can be coupled to a second electrical DC voltage sink, and which is designed to provide a second DC voltage on the output side, wherein one of the DC voltage circuits has a DC voltage converter for the purpose of adjusting its output-side DC voltage.

Power transmission arrangement

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 a system () with a battery charging device () with output terminals and an vehicle electrical system power supply stage (). The vehicle electrical system power supply stage has a step-up/step-down converter (), which is designed to raise an input voltage of the vehicle electrical system power supply stage to an intermediate circuit voltage, a direct current intermediate circuit (), which is coupled to the step-up/step-down converter () at intermediate circuit nodes (), and a vehicle electrical system d.c.-d.c. converter (), which is coupled to the direct voltage intermediate circuit at the intermediate circuit nodes, and which is designed to convert the intermediate circuit voltage into a direct voltage for a vehicle electrical system (), the output terminals of the battery charging device () being coupled to the direct voltage intermediate circuit () via the intermediate circuit nodes ().

System with battery charging device and vehicle electrical system power supply stage

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 an energy storage device for generating an n-phase supply voltage, wherein n&#x3e;1, comprising n energy supply branches connected in parallel, which are each coupled to a respective output connection of the energy storage device, wherein each of the energy supply branches has a plurality of energy storage modules connected in series. The energy supply branches each have a respective energy storage cell module, which has at least one energy storage cell, and a respective coupling device having first coupling elements, which are designed to selectively connect the energy storage cell module into the respective energy supply branch or bypass the energy storage cell module. At least one of the energy supply branches has at least one second coupling element, which is coupled between output connections of energy storage cell modules that are adjacent in the at least one energy supply branch and which is designed to connect the coupled energy storage cell modules into the respective energy supply branch in parallel with each other.

Energy storage device, system comprising an energy storage device, and method for actuating an 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

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 a method for controlling an energy storage device that comprises n output connections, wherein n&#x2267;2, for producing a supply voltage at each of the output connections, and n energy supply branches, which are each coupled to one of the output connections, wherein each of the energy supply branches comprises a plurality of series-connected energy storage modules that each comprise an energy storage cell module comprising at least one energy storage cell, and a coupling device having coupling elements in a full bridge circuit that is designed to connect or bridge the energy storage cell module selectively in the respective energy supply branch. The method according to the invention comprises the following steps: for a number k of energy storage modules of at least one first energy supply branch, generating a first pulse width modulated control signal for controlling the coupling devices of the respective energy storage modules by comparing a first target value signal with a number 2k first periodic reference signals having a pulse period T, which signals each have a phase shift of T/2k relative to the adjacent first reference signals; and, for a number k of energy storage modules of at least one second energy supply branch, generating a second pulse width modulated control signal for controlling the coupling devices of the respective energy storage modules by comparing a second target value signal with a number 2k of second periodic reference signals having the pulse period T, which each have a phase shift of T/2k relative to the adjacent second reference signals. The second reference signals each have a phase shift of T/4k relative to the first reference signals.

System and method for controlling an energy storage device

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 ().

Energy storage device with heating device and method for heating energy cells of an energy storage device

The invention relates to a method for charging the energy storage cells of an energy storage device, which comprises: n first output connections, wherein n&#x3e;1, for issuing a supply voltage at each of the output connections, a second output connection, wherein a charging device can be connected between the first output connections and the second output connection, and n parallel-connected energy supply branches, which are each coupled between a first output connection and the second output connection, wherein each of the energy supply branches comprises a plurality of series-connected energy storage modules, which each comprise an energy storage cell module comprising at least one energy storage cell, and a coupling device having coupling elements that are designed to selectively connect or bridge the energy storage cell module in the respective energy supply branch. The method according to the invention comprises the following steps: determining a maximum possible charging voltage of a charging apparatus, which provides a charging voltage for the energy storage device; determining the maximum number of the energy storage cell modules of an energy supply branch at which the sum of the output voltages of the energy storage cell modules, which is dependent on the instantaneous charge states of the energy storage cells of all the energy storage cell modules of an energy supply branch, is still lower than the maximum possible charging voltage; and selecting and controlling the coupling elements of energy storage modules of the energy supply branch, such that in each case only the maximum number of energy storage cell modules is coupled into the energy supply branch.

Growing community of inventors

Stuttgart, Germany

Erik Weissenborn