Patent application number | Description | Published |
20100194387 | MAGNETORESISTANCE SENSOR AND METHOD OF OPERATING A MAGNETORESISTANCE SENSOR - A magnetoresistive sensor system ( | 08-05-2010 |
20100207623 | SENSOR DEVICE AND METHOD - The invention relates to a method and a sensor device ( | 08-19-2010 |
20100321014 | EXTERNAL MAGNETIC FIELD ANGLE DETERMINATION - Magnetoresistive sensors are commonly used for angular detection in many automotive applications. According to an exemplary embodiment of the present invention, a sensor is provided in which a first half-bridge has magnetoresistive resistors with barber-pole stripes and in which a second half-bridge has magnetoresistive resistors without barber-pole stripes. One of the resistors without barber-pole stripes is rotated with respect to the other three resistors by 90°. This may provide for an improved angle determination with reduced angular errors due to offset. | 12-23-2010 |
20110018621 | CURRENT MIRROR CIRCUIT - The invention relates to a current mirror circuit ( | 01-27-2011 |
20110202315 | DEVICE AND METHOD FOR OFFSET COMPENSATION BASED ON HYSTERESIS TRACKING - A signal processor for removing at least one unintended signal component from an input signal (ua) is proposed. The signal processor includes a filter device ( | 08-18-2011 |
20110254561 | DEVICE FOR SYNCHRONIZED CELL VOLTAGE MEASUREMENT IN A PLURALITY OF ELECTRICAL STORAGE CELLS - The invention relates to a device for measuring the electrical cell voltages in several electrical storage cells of an electrical storage medium. Each storage cell has an associated measuring device and the measurement values of the measurement devices are read out based on a read command of a control unit. According to the invention, a synchronization line leading from the control unit to the measurement devices or from one of the measurement devices to all other measurement devices is provided for simultaneously reading out the measurement values. The invention further relates to a corresponding method. | 10-20-2011 |
20110273024 | SERIES CONNECTION OF ON-OFF CONTROLLERS FOR POWER TRANSMISSION IN BATTERY SYSTEMS - A power transmitter for a battery system, a battery system including such a power transmitter, and a motor vehicle including such a battery system are disclosed. The power transmitter includes a plurality of DC/DC converters, each of which has a first and a second input and a first and a second output. According to the invention, first and second inputs are designed to connect a battery module, while the DC/DC converters are connected in series at the output end. | 11-10-2011 |
20110273182 | DETECTING THE VOLTAGE IN BATTERY CELLS - The invention relates to an evaluation circuit for detecting the voltage in battery cells of a battery system which are preferably connected in series. The evaluation circuit includes serially connected resistors, the number of which is equal to the number of battery cells for which the voltage is to be detected. One of the resistors is associated with each of the battery cells. The evaluation circuit further includes a power source for generating a current that is continuous in some sections and is applied to the serially connected resistors, a number of comparators equal to the number of resistors to compare a voltage released at a resistor associated with a battery cell to the voltage in the battery cell with which the resistor is associated, and output a respective output signal when the voltage released at a resistor associated with a battery cell is equal to, exceeds, or drops below the voltage in the battery cell, and an evaluation circuit for deriving the voltage in each battery cell on the basis of a point in time when the respective output signal is output and on the basis of the variation of the current that is continuous in some sections. | 11-10-2011 |
20110279122 | METHOD, ELECTRIC CIRCUIT ARRANGEMENT AND ELECTRIC MEMORY UNIT FOR DETERMINING A CHARACTERISTIC STATUS PARAMETER OF THE MEMORY UNIT - The invention relates to a method for determining a characteristic status parameter of a memory unit via an electric circuit arrangement. In the circuit arrangement at least one inductive component and at least one capacitive component are arranged, forming a tuned circuit with the memory unit. The method has the following steps of energizing the tend circuit by temporary charging of the capacitive component, the energizing being carried out by an energizing device electrically supplied by the memory unit, and determining a time-dependent voltage change at the capacitive component after terminating the energizing and determining the characteristic status parameter from the time-dependence of the voltage change. The invention further relates to a corresponding electrical circuit arrangement and an electrical memory, including such a circuit arrangement. | 11-17-2011 |
20110309070 | METHOD AND DEVICE FOR HEATING ACCUMULATOR CELLS - The invention relates to a method for heating accumulator cells of an electrical energy accumulator, at least one first accumulator cell and at least one second accumulator cell being arranged in series. According to the invention, the first accumulator cell and the second accumulator cell alternately feed at least one inductive component which is electrically connected to an intermediate tap between the first and second accumulator cells. The invention also relates to a corresponding device. | 12-22-2011 |
20120181873 | Hybrid Battery System - An energy transformer for a battery system is disclosed. The energy transformer includes a plurality of DC/DC converters each having a first and a second input and a first and a second output. The first output of a first of the DC/DC converters is connected to a first output of the energy transformer and the second output of a last of the DC/DC converters is connected to a second output of the energy transformer. The first and second inputs are designed for connecting a battery module. The DC/DC converters are connected in series on the output side. The energy transformer has a plurality of first diodes each of which have an anode connected to the first input of one of the DC/DC converters and a cathode connected to the second input of another DC/DC converter so that the DC/DC converters are connected in series on the input side and via a second diode having an anode connected to the first input of the first of the DC/DC converters and a cathode connected to the first output of the energy transformer.— | 07-19-2012 |
20120206103 | Parallel Circuit of Accumulator Lines - A circuit for connecting a first accumulator line to a second accumulator line from an accumulator is described. The accumulator is provided for charging and discharging electrical energy via the accumulator lines. Each accumulator line has a positive pole and a negative pole for charging and discharging electrical energy. The circuit has at least one first switch which is provided for disconnecting and connecting two similar poles of the two accumulator lines. | 08-16-2012 |
20120217797 | Battery System with DC/DC Converter - A battery system includes a plurality of groups of series-connected battery cells, a plurality of DC/DC converters and a first switch. The groups of series-connected battery cells are themselves in turn connected in series. The DC/DC converters are connected on the input side to a first pole and to a second pole of a group of battery cells associated with the respective DC/DC converter, and are connected in series on the output side between a first output of the battery system and a second output of the battery system. The first switch is connected in a first current path between the first pole of a first group of battery cells and the first output of the battery system, and has a control input, which is connected to a controller, for a first control signal. | 08-30-2012 |
20120223669 | METHOD AND DEVICE FOR BALANCING ELECTRICAL VOLTAGES IN ELECTRICAL ACCUMULATOR UNITS - The invention provides a method for balancing the electrical voltages of at least two electrical accumulator units that are connected in series. According to the invention, one accumulator unit is connected to the winding of a coil in order to excite the coil, and the other accumulator unit is charged by the excited coil by the subsequent connection of the winding to the other accumulator unit. In addition, the invention provides a corresponding electrical accumulator. | 09-06-2012 |
20120228931 | Series Connection of Switching Regulators for Energy Transfer in Battery Systems - An energy transformer for a battery system is disclosed. The energy transformer includes a first and a second primary DC/DC converter each having two inputs and two outputs. The inputs are designed for connecting a battery module and the first and the second primary DC/DC converters are connected in series on the output side. The energy transformer has at least one first secondary DC/DC converter having two inputs that are connected to the outputs of the second primary DC/DC converter and a first output connected to one of the outputs of the first primary DC/DC converter. | 09-13-2012 |
20120235627 | BALANCING ELECTRICAL VOLTAGES OF GROUPS OF ELECTRICAL ACCUMULATOR UNITS - A method for balancing the electrical group voltages of at least two accumulator groups which are connected in series and each of which have a plurality of accumulator units provides that one accumulator group is connected to the winding of a coil in order to excite the coil, and the other accumulator group is charged by the excited coil by the subsequent connection of the winding to the other accumulator group. In addition, a corresponding electrical accumulator is provided. | 09-20-2012 |
20120242156 | DC/DC CONVERTER CIRCUIT AND BATTERY SYSTEM - A DC/DC converter circuit includes at least two DC/DC converters and a low-pass filter, the DC/DC converters in each case having one input side and one output side. The DC/DC converters are connected to each other in series on their output side, and the low-pass filter is post-connected to the DC/DC converters that are connected in series to each other, so as to smooth the output voltage generated by the DC/DC converters at their output side. | 09-27-2012 |
20120243135 | DEACTIVATION DEVICE FOR DISCONNECTING AN ELECTRICAL ENERGY SOURCE FROM A LOAD, AND CIRCUIT SYSTEM HAVING A DEACTIVATION DEVICE - A deactivation device for disconnecting an electrical energy source from a load includes at least two one-time switches. The one-time switches become inoperative upon switching in response to the presence of a load exceeding a critical value, thereby disconnecting an electrical connection. The one time switches are connected in parallel, and the deactivation device is configured in such a way that, except for a one-time switch, which is provided for disconnecting the energy source from the load and for connecting the energy source to the load, the at least one other one-time switch remains open. In the case of an inoperativeness of the one one-time switch, the at least one other one-time switch is used for disconnecting the energy source from the load and for connecting the energy source to the load. | 09-27-2012 |
20120282500 | Architecture of a Battery and Control Device - A battery system comprises a battery module, including a high-voltage grid and a low-voltage network having a BCU. The battery module includes a plurality of battery cells connected in series and a plurality of cell monitoring units configured to measure and to transmit battery voltages of the battery cells with respect to a first control signal. The BCU is configured to determine a charge state of the battery cells. The BCU includes a microcontroller and a nanocontroller. The nanocontroller is or can be directly connected to the cell monitoring units and is connected to the microcontroller by means of an isolator, and is configured to generate the first control signal and to transmit the signal to the cell monitoring units and to receive the battery voltages of the battery cells transmitted by the cell monitoring units and relay same to the microcontroller. | 11-08-2012 |
20120306268 | Battery System for Micro-Hybrid Vehicles comprising High-Efficiency Consumers - A battery system for a motor vehicle is disclosed. The battery system includes an internal combustion engine, said battery system comprising at least one starting circuit, a low-voltage on-board supply system, and an on-board supply system with an increased voltage. The starting circuit has a starter battery and a starter that is connected, or can be connected, to the starter battery, said starter being used to start the internal combustion engine on a starter signal. The low-voltage on-board supply system has an on-board supply system battery used to produce a first voltage and to transmit same to the low-voltage on-board supply system, and at least one electrical consumer . The on-board supply system with increased voltage has at least one electric generator that can be operated by the internal combustion engine and is used to produce a second voltage higher than the first voltage and to transmit said second voltage to the on-board supply system with increased voltage. The on-board supply system with increased voltage is connected to the low-voltage on-board supply system by means of a first coupling unit used to draw electrical energy from the on-board supply system with increased voltage and to supply said energy to the low-voltage on-board supply system. The low-voltage supply system is connected to the starter circuit by means of a second coupling unit used to draw electrical energy from the low-voltage on-board supply system and to supply said energy to the starter circuit. A motor vehicle comprising a corresponding battery system is also disclosed. | 12-06-2012 |
20120306468 | Energy Storage System and Method for Operating Same - An energy supply system including an electrical energy storage system having multiple storage modules, in particular a battery system, an ascertaining device for ascertaining state variables of the storage modules and an energy transmission device for energy transmission between the storage modules and a downstream electrical device. It is provided that the energy transmission device has multiple d.c. chopper converters, which are connected to one another in parallel and/or in series at the output end, and each of the d.c. chopper converters is connectable to a storage module of the energy storage system, and the energy supply system has a trigger device for triggering the d.c. chopper converters as a function of the ascertained state variable of the respective connected storage module. Also described is a method for operating an energy supply system. | 12-06-2012 |
20130009601 | BALANCING ELECTRICAL VOLTAGES OF ELECTRICAL ACCUMULATOR UNITS - A method for balancing the electrical voltages of at least two electrical accumulator units that are connected in series provides that a coil is charged by a first accumulator unit and a second accumulator unit is charged with the energy of the charged coil. Optionally, only the second accumulator unit is charged. In addition, a corresponding electrical accumulator is provided. | 01-10-2013 |
20130026823 | BATTERY SYSTEM FOR MICRO-HYBRID VEHICLES COMPRISING HIGH-EFFICIENCY CONSUMERS - A battery system for a motor vehicle having an internal combustion engine includes at least one starting circuit, a low-voltage on-board supply system, and an on-board supply system with an increased voltage. The starting circuit has a first battery and a starter that is configured to be connected to the first battery. The low-voltage supply system has at least one electrical consumer and a second battery configured to produce a first voltage. The supply system with increased voltage has an electrical generator and a third battery configured to produce a second voltage that is higher than the first voltage. The electric generator is configured to produce a third voltage that is higher than the second voltage. A first coupling connects the supply system with increased voltage to the low-voltage supply system and transfers energy therebetween. A second coupling connects the low-voltage on-board supply system to the starter circuit. | 01-31-2013 |
20130154521 | Battery with Variable Output Voltage - A battery includes at least one battery module line and a control unit. The at least one battery module line has a plurality of battery modules mounted in series. Each battery module includes at least one battery cell and a coupling unit. The at least one battery cell is mounted between a first input and a second input of the coupling unit. The coupling unit is designed to switch the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module, on a first control signal, and to connect the first terminal to the second terminal on a second control signal. The control unit is designed to transmit the first control signal to a first variable number of battery modules of the at least one battery module line. | 06-20-2013 |
20130175995 | Battery with Cell Balancing - A battery includes at least one battery module line, a sensor means for determining a charging stage of a battery cell, and a control unit. The battery module line includes a plurality of battery modules mounted in series, each module having at least one battery cell and a coupling unit. The at least one battery cell is mounted between a first input and a second input of the coupling unit, and the coupling unit is configured (i) to switch the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module, on a first control signal, and (ii) to connect the first terminal to the second terminal on a second control signal. The sensor means is connectable to the at least one battery cell of each battery module. | 07-11-2013 |
20130193752 | Coupling Unit and Battery Module having an Integrated Pulse-Controlled Inverter and Increased Reliability - A coupling unit for a battery module, includes a first input, a second input and an output. The coupling unit is configured to connect the first input or the second input to the output in response to a control signal. The coupling unit and at least one battery cell are included in a battery module. The at least one battery cell is connected between the first input and the second input of the coupling unit. A first terminal of the battery module is connected to the output of the coupling unit, and a second terminal of the battery module is connected to the second input of the coupling unit. | 08-01-2013 |
20130200693 | Coupling Unit and Battery Module comprising an Integrated Pulse Width Modulation Inverter and Cell Modules that can be Replaced During Operation - A coupling unit for a battery module, includes a first input, a second input, a first output and a second output. The coupling unit is configured to connect the first input to the first output and the second input to the second output, on a first control signal, and, on a second control signal, to separate the first input from the first output and the second input from the second output, and to connect the first output to the second output. | 08-08-2013 |
20130200694 | Battery comprising an Integrated Pulse Width Modulation Inverter - A battery includes at least one battery cell line having a plurality of battery cells mounted in series between a respective positive battery pole and a respective negative battery pole. The battery further includes a pulse width modulation inverter integrated into the battery, at least one first and one second input, and at least one output. The first and second inputs are connected to the positive battery pole or the negative battery pole. | 08-08-2013 |
20130209862 | Battery Comprising a Plurality of Independent Battery Cell Lines - A motor vehicle includes an electric drive motor for driving the motor vehicle and a battery connected to the electric drive motor. The battery includes a plurality of battery cell lines, each battery cell line has a plurality of battery cells mounted in series between a respective first pole and a respective second pole. | 08-15-2013 |
20130257321 | Battery System, Method for Charging Battery Modules, and Method for Balancing Battery Modules - A battery system has a battery with a plurality of battery modules which can be selectively activated or deactivated by means of actuation, wherein, in the activated state, the battery module voltage of a respective battery module contributes to an output voltage of the battery and, in the deactivated state, the battery module is uncoupled from the current path of the battery. The battery system comprises a circuit for charging the battery modules which has components which are arranged in accordance with a switching converter topology, which is integrated in the battery system in such a way that the battery modules can be charged independently of whether a respective battery module which is to be charged is in the activated or in the deactivated state. A method for charging battery modules, a method for balancing battery modules, and a motor vehicle include the battery system. | 10-03-2013 |
20130257444 | Device and Method for the Redundant Determination of a Battery Current Flowing Through the Poles of a Battery - A device comprises a battery having a multiplicity of battery cells and a sensor system for the redundant determination of a battery current flowing through the poles of the battery. The sensor system comprises a current measuring device for detecting the battery current and providing a current measurement value. Furthermore, the device comprises a voltage measuring device for separately detecting a variation with time of the single-cell voltage of at least one battery cell and providing at least one variation with time of a voltage measurement value. Furthermore, the device comprises an evaluating unit which is configured for determining the battery current from the at least one variation with time of the voltage measurement value, providing a corresponding current value and comparing the current value with the current measurement value. | 10-03-2013 |
20130278052 | Method for Starting Up a Battery System Having a DC Voltage Intermediate Circuit - The disclosure presents a method for starting up a battery system having a battery, a DC voltage intermediate circuit which is connected to the battery, and a drive system which is connected to the DC voltage intermediate circuit. The battery has a large number of battery modules which are connected in series and which each comprise a coupling unit and at least one battery cell which is connected between a first input and a second input of the coupling unit. The method comprises a step for decoupling the battery cells of all of the battery modules which are connected in series by outputting a corresponding control signal to the coupling units of the battery modules which are connected in series. All of the battery modules which are connected in series are then bridged at the output end, and therefore an output voltage of the battery is zero. | 10-24-2013 |
20130285617 | Method for Adjusting a DC Intermediate Circuit Voltage - The disclosure relates to a method for adjusting a voltage of a DC intermediate circuit in a battery system composed of a battery and a drive system. The battery is connected to the drive system via the DC intermediate circuit and comprises at least one battery module that has a coupling unit and at least one battery cell connected between a first input and a second input of the coupling unit. In a first method step, the at least one battery cell of the at least one battery module is decoupled during a first variable time period by emitting a corresponding control signal to the coupling unit of the at least one battery module, and the at least one battery module is bridged on the output side so that an output voltage of the battery becomes zero. | 10-31-2013 |
20130293169 | Polyphase Energy Converter for Outputting Electrical Energy - An energy converter includes a plurality of converter sections each comprising at least one first converter cell module and one second converter cell module. The first and second converter cell modules each contain at least one converter cell and one coupling unit. The at least one converter cell of the converter cell modules is connected between a first input and a second input of the coupling unit, and the coupling unit is designed to connect the at least one converter cell between a first terminal of the converter cell module and a second terminal of the converter cell module in response to a first control signal, and to connect the first terminal to the second terminal in response to a second control signal. The disclosure also relates to a motor vehicle having an energy converter such as this, and to a method for supplying an electrical drive system. | 11-07-2013 |
20130293196 | Method for Starting Up a Battery System Having a DC Voltage Intermediate Circuit - The disclosure presents a method for starting up a battery system having a battery and a DC voltage intermediate circuit which is connected to the battery. The battery has a plurality of battery modules which are connected in series and which comprise a first battery module having a first number of battery cells and at least a second battery module having a larger second number of battery cells. At the beginning of the method, all of the battery modules are deactivated, and therefore the output voltage of the battery is zero. During the course of the method, the output voltage of the battery is increased by successive second battery modules being activated. In the process, the first battery module is activated in each case between the activation of two second battery modules and is deactivated again when the further second battery module is activated. | 11-07-2013 |
20130300126 | Range Extender, Drive and Motor Vehicle - The disclosure relates to a range extender for a hybrid vehicle configured to be driven by an electric machine. The range extender includes a generator configured to generate electrical energy, an internal combustion engine configured to drive the generator which generates a number N of generator output voltages, and an N-phase rectifier configured to rectify the number N of generator output voltages to form a rectified output voltage. The range extender further includes a direct voltage converter configured to convert the rectified output voltage of the generator. | 11-14-2013 |
20130300323 | METHOD AND CIRCUIT ARRANGEMENT FOR CHARGING AN INTERMEDIATE CIRCUIT CAPACITOR - A method for charging an intermediate circuit capacitor in a precharging unit includes charging the intermediate circuit capacitor via a current source and adjusting the supplied current in such a manner that a constant power loss is produced in the current source during the entire charging operation. A circuit arrangement includes a battery which is connected to a current source which is connected to an intermediate circuit capacitor via a switch. An adjusting circuit is arranged in parallel with the current source and can be used to adjust the current for charging the intermediate circuit capacitor. The current is adjusted in such a manner that a constant power loss is produced in the current source during the entire charging operation. | 11-14-2013 |
20130300369 | Battery having a Plurality of Battery Modules Arranged in Battery Strings, and Method for Operating the Battery - A battery includes a plurality of battery modules which are arranged in battery strings and are selectively activated or deactivated by driving. The battery module voltage of a respective battery module contributes to an output voltage of the corresponding battery string of the battery in the activated state. The battery further includes a switching converter topology which is coupled to the battery strings and is configured to selectively generate currents flowing into one or more of the battery strings. | 11-14-2013 |
20130300426 | BATTERY SYSTEM WITH CELL VOLTAGE DETECTING UNITS - A battery system with at least one module includes a plurality of battery cells. A cell voltage detecting circuit is associated with each battery cell of the plurality of battery cells. The cell voltage detecting circuits of the at least one module are connected to a multiplexer. An output of the multiplexer is connected to a communication bus via an analog-digital converter. The communication bus is connected to an evaluating unit. The multiplexer is additionally connected to at least one auxiliary voltage source that is known to the evaluating unit. In a method for monitoring a battery system with at least one module including a plurality of battery cells, a voltage of each of the battery cells is detected and fed to an evaluating unit via a cell voltage detecting unit. An output signal of the cell voltage detecting unit is tested for plausibility. | 11-14-2013 |
20130314145 | Device for Switching at least one Energy Storage Means - A device for switching at least one energy storage device includes a parallel circuit of transistors that is connected in series with the energy storage device. Gate terminals of the transistors are connected to one another. At least one of the transistors from the parallel circuit is configured to be operated in avalanche breakdown and has an avalanche voltage which is lower than respective avalanche voltages of the remaining transistors. | 11-28-2013 |
20130322492 | Device and Method for Measuring an Extremal Temperature - The disclosure relates to a device for measuring an extremal temperature among temperatures of a plurality of temperature sensors. A first temperature sensor is configured to conduct a current that corresponds to the temperature of the sensor, and each (k+1)th temperature sensor is equipped to conduct the larger of two currents, that is, a current that corresponds to the temperature of the respective sensor and the current that the kth temperature sensor conducts. The disclosure further relates to a battery management system that includes a device according to the disclosure, to a battery comprising a device according to the disclosure or a battery management system according to the disclosure, to a motor vehicle including a battery according to the disclosure, and to a method for measuring the extremal temperature among a plurality of temperatures | 12-05-2013 |
20130335096 | BATTERY HAVING CELL VOLTAGE AND BATTERY CURRENT DETECTION AND COMPRISING ONLY ONE ELECTRICAL ISOLATION DEVICE - A battery includes a plurality of battery cells connected in series between a positive terminal and a negative terminal and a resistor connected in series with the battery cells. The battery also includes a plurality of cell voltage detection units which each include a plurality of voltage measurement inputs connected to a respective group of the battery cells. The battery is configured to determine cell voltages of the battery cells connected to the respective cell voltage detection unit. The cell voltage detection units are connected to each other by a communication bus and are configured to transmit, via the communication bus, the determined cell voltages to a microcontroller which is galvanically decoupled from the cell voltage detection units by an electrical isolation device. The resistor includes a first connection connected to a selected voltage measurement input of one of the cell voltage detection units. | 12-19-2013 |
20130346783 | Method and Arrangement for Monitoring at least one Battery, Battery having such an Arrangement, and Motor Vehicle having a Corresponding Battery - The present disclosure relates to a method and an arrangement for monitoring at least one battery, to a battery having such an arrangement, and to a motor vehicle having a corresponding battery that is used for safely monitoring the battery condition with a reduced amount of hardware. The at least one battery is monitored by analyzing measured variables of the at least one battery using at least one data processing device. The signals exchanged between the at least one battery and the at least one data processing device via a communication connection are monitored at least once. | 12-26-2013 |
20140001842 | Energy Converter for Outputting Electrical Energy | 01-02-2014 |
20140015536 | Battery System for Measuring Battery Module Voltages - A battery system includes at least one module which comprises a large number of battery cells. Each module has an associated cell voltage detection unit which is connected to an evaluation unit by a communications bus. Each module additionally includes a module voltage detection circuit which is connected to the evaluation unit. The disclosure also relates to a method for monitoring a battery system having at least one module comprising a large number of battery cells. A voltage of each of the battery cells is detected and supplied to an evaluation unit by a cell voltage detection unit. In addition, a module voltage is separately detected and supplied to the evaluation unit. The disclosure also describes a motor vehicle having a battery system. The battery system is connected to a drive system of the motor vehicle. | 01-16-2014 |
20140035360 | Battery with Autonomous Cell Balancing - The disclosure relates to a device for balancing the battery cells of a battery including a plurality of pairs of battery cells. Each pair of battery cells is connected to a charge balancing unit which is configured to balance the cell voltages of the battery cells of the pair of battery cells with respect to each other. The device further includes a measuring device which is configured to output a current that is proportional to a minimal cell pair voltage to a plurality of resistors that are connected in series. Comparators are also provided, each of which is connected to a pole of a first battery cell of an assigned pair of battery cells and to a respective resistor on an input side and to a control electrode of a respective discharging unit on an output side. | 02-06-2014 |
20140035361 | METHOD FOR CONTROLLING A BATTERY, AND BATTERY FOR CARRYING OUT THE METHOD - A method is used for controlling a battery having at least one battery module line with a plurality of battery modules that are connected in series. Each battery module has at least one battery cell, at least one coupling unit, a first connection, and a second connection. Each battery module is configured to assume one of at least two switching states dependent on a control of the coupling unit. The different switching states correspond to different voltage values between the first connection and the second connection of the battery module. The method includes determining a ranking among the battery modules. The method also includes engaging the battery modules in a supply of a desired output voltage of the battery module line using the ranking. The battery modules compare respective battery module operating states among one another and determine the ranking on the basis of the comparison. | 02-06-2014 |
20140042937 | Method for Charging an Intermediate Circuit Capacitor - The disclosure relates to a method for charging an intermediate circuit capacitor in an electric drive unit comprising an electric motor. The intermediate circuit capacitor is charged by an intermediate circuit current that is supplied by a battery. The output voltage of the battery is settable to one or more voltage values. A target value of the intermediate circuit current is determined, and an actual value of the intermediate circuit current is ascertained. The actual value of the intermediate circuit current is then compared with the target value of the intermediate circuit current. An optimal output voltage of the battery is determined on the basis of the comparison of the actual value of the intermediate circuit current with the target value of the intermediate circuit current. Then, the optimal output voltage of the battery is set. | 02-13-2014 |
20140045004 | Battery Management Unit Comprising a Plurality of Monitoring Units - A battery management unit includes a plurality of monitoring units. Each monitoring unit is configured to acquire at least one operating variable of at least one battery cell or of a battery module having a number of battery cells. Each monitoring unit is connected to a first bus. The battery management unit further includes a control device connected to the first bus and configured to communicate with at least one of the monitoring units of the plurality of monitoring unit via the first bus. | 02-13-2014 |
20140057143 | Battery Module with Alarm Line - A battery module for a battery system includes two terminals, via which the battery module can be electrically connected to the battery system. Furthermore, the battery module has a battery string, which connects the two terminals to one another and has at least one battery cell connected in series and/or in parallel with the battery string. The battery module comprises a battery module circuit, which is configured, upon receiving an alarm signal, to bridge the battery module via the terminals thereof. The at least one battery cell is connected to a monitoring circuit associated with the battery cell. The monitoring circuit is connected to an alarm line via an electrical connection. The alarm line is connected to an input of the battery module circuit. | 02-27-2014 |
20140084864 | Method for Charging a Battery - The disclosure relates to a method for charging a battery having at least one battery cell. A first connection of a charging device is connected to a first pole of the at least one battery cell by a rectifying device. The rectifying device is set up such that charging current can flow. The disclosure further relates to a charging device, a battery, and a motor vehicle, which are configured to carried out the method. | 03-27-2014 |
20140091738 | Inverter Circuit having Switching Means Operating with Linear Operation - An inverter circuit for an electric motor includes a first terminal and a second terminal, via which the inverter circuit is connectable to an energy store. The inverter circuit also includes a parallel circuit having three half-bridge circuits located between the first terminal and the second terminal. Each of the half-bridge circuits includes in each case two switching devices, between which a half-bridge terminal, via which the respective half-bridge circuit is connectable to a respective input of an electric motor, is arranged in each case. The two switching devices of at least one of the half-bridge circuits are in each case configured to be driven linearly and to be operated as a current source, while the respective other switching device of the at least one half-bridge circuit is in the on state. | 04-03-2014 |
20140111123 | Drive Unit for an Electric Motor - A drive unit for an electric motor comprises a multilevel inverter and a battery. The battery comprises at least one battery module train comprising a plurality of battery modules connected in series, each module having at least one battery cell and one coupling unit. The at least one battery cell is connected between a first input and a second input of the coupling unit. The coupling unit is designed to connect the at least one battery cell between two terminals of the battery module in response to on a first control signal and to connect the two terminals in response to a second control signal. Several center taps are arranged on the battery module train, by means of which a potential can be tapped at a connection between two battery modules respectively. Inputs of the multilevel inverter are connected to the taps. | 04-24-2014 |
20140145651 | Battery Balancing with Reduced Circuit Complexity - A circuit for a battery includes a number n of battery cells which are connected in series between a positive battery terminal and a negative battery terminal. The number n is a natural number greater than 1. Due to the mounting in series of the n battery cells, a number of connection points are obtained between the n battery cell. The circuit further includes a discharge element comprising a first terminal which is connected or can be connected to a first discharge line and a second terminal which is connected or can be connected to a second discharge line. The circuit also includes a number of switches which can be connected at a first terminal to a respective connection point or to one of the positive or negative battery terminals and are connected at a second terminal to the first or second discharge line. | 05-29-2014 |
20140145685 | Battery System and Method for Determining Battery Module Voltages - A battery system comprises at least two modules which include a plurality of battery cells, with each module being associated with a cell voltage detection unit which is connected to a central controller via a common communication bus. Each module additionally includes a module voltage detection unit which is connected to the central controller and is configured to separately detect the voltage of the associated module. | 05-29-2014 |
20140176024 | Battery System Having an Intermediate Circuit Voltage which can be Set in a Variable Fashion - A battery system includes a battery, a DC voltage intermediate circuit connected to the battery, an inverter connected to the DC voltage intermediate circuit and an electric motor connected to the inverter. The DC voltage intermediate circuit includes a capacitor, and the battery includes a battery module line having a plurality of battery modules which are connected in series, and a control unit. Each battery module includes a coupling unit and at least one battery cell which is connected between a first input and a second input of the coupling unit. The coupling unit is configured to connect the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module in response to a first control signal, and to connect the first terminal to the second terminal in response to a second control signal. | 06-26-2014 |
20140210380 | Battery having a Plurality of Battery Cells and Method for Regulating a Battery Voltage of a Battery Using Switch-On Probabilities of the Battery Cells - A method for regulating a battery voltage of a battery having a plurality of battery cells configured to be selectively bridged and connected to a battery string includes regulating the battery voltage to a desired nominal voltage by alternately driving the battery cells. The method further includes transmitting a value for a nominal switch-on probability to one or more driving circuits of the battery cells, with the result that the one or more battery cells are each switched with an allocated switch-on probability. | 07-31-2014 |
20140212714 | BATTERY MANAGEMENT SYSTEM, BATTERY, MOTOR VEHICLE HAVING A BATTERY MANAGEMENT SYSTEM, AND METHOD FOR MONITORING A BATTERY - A battery management system includes several first measuring units, each associated with at least one respective battery module of the battery to detect a measured variable. The battery management system also includes a control device having a first microcontroller and a second microcontroller, a first communication connection configured to transfer data between the first measuring units and the control device, and several second measuring units configured to detect the measured variable from the battery modules of the battery in addition to the detection of the measured variable by the first measuring units. A second communication connection is used to transfer data between the second measuring units and the control device. The first microcontroller is configured to evaluate measurement data detected by the first measuring units, and the second microcontroller is configured to evaluate measurement data detected by the second measuring units independently of the first microcontroller. | 07-31-2014 |
20140234678 | Device and Method for Measuring a Maximum Cell Voltage - A device for measuring a maximum cell voltage among cell voltages of a plurality of battery cells connected in series includes a plurality of ohmic resistors connected in series. The device is configured to be connected to a plurality of battery cells connected in series in such a way that a respective battery cell is associated with each ohmic resistor according to the series connections. Each ohmic resistor, with the exception of a first ohmic resistor, is configured to conduct the larger of (i) a current that corresponds to the cell voltage of the associated battery cell, and (ii) the current that is conducted by the preceding ohmic resistor in the series connection. | 08-21-2014 |
20140320143 | BATTERY MANAGEMENT SYSTEM AND METHOD FOR DETERMINING THE CHARGE STATE BATTERY CELLS, BATTERY AND MOTOR VEHICLE COMPRISING A BATTERY MANAGEMENT SYSTEM - A method for determining the charge state of battery cells or battery modules of a battery includes monitoring several battery cells or at least one battery module using a plurality of cell monitoring units. The respective electric current of the battery cells or battery modules is measured by the cell monitoring units, the battery current is measured, and the measured current value is transmitted to the plurality of cell monitoring units. A charge state is calculated in each of the cell monitoring units for the respective monitored battery cells, or respectively, the at least one battery module. A battery management system is configured to carry out the method for determining the charge state of the battery cells or battery modules of the battery. A battery and a motor vehicle include the battery management. | 10-30-2014 |
20140358350 | Motor Vehicle, Battery, and Method for Controlling a Battery - A battery comprises a number n of battery module strings, wherein n is a natural number greater than or equal to two. The battery module strings have several battery modules, and one battery module has a coupling unit. The coupling unit is configured as a voltage transformer and couples the battery modules to each other. A method of controlling the battery includes supplying a load connected to the battery with a predefined and substantially constant total power. The total power corresponds to a sum of n individual powers of the n battery module strings. The method further includes setting n−1 string voltages, which are each present at the n−1 battery module strings, according to the total power, the load, and by defining a string voltage present at an nth battery module string with amplitude and phase position. At least two of the n individual powers are asymmetrical to each other. | 12-04-2014 |
20140368132 | Converter Unit for an Asynchronous Machine - A converter unit having at least one output. The at least one output is configured to be connected to a coil of an asynchronous machine. The converter unit is configured to provide several voltage levels at the at least one output. | 12-18-2014 |
20150028879 | BATTERY MANAGEMENT SYSTEM, BATTERY, MOTOR VEHICLE HAVING A BATTERY MANAGEMENT SYSTEM, AND METHOD FOR MONITORING A BATTERY - A battery management system includes a control unit having a first micro controller arranged on the low-voltage side of the control unit, and a second micro controller arranged on the high-voltage side of the control unit. The system further includes a plurality of first voltage measuring units respectively assigned to a battery module of the battery, and a first communication connection for transmitting voltage values from the first voltage measuring units to the first micro controller. The system also has a plurality of second voltage measuring units and a second communication connection for transmitting voltage values from the second voltage measuring units to the second micro controller. The first or the second voltage measuring units are configured as min/max measuring units such that they detect a minimum and a maximum voltage value of the battery cells in the battery modules, and dismiss voltage measurement values in between. | 01-29-2015 |
20150042158 | Battery System, Motor Vehicle Comprising said Battery System, and Method for Producing a Ready Status for a Motor Vehicle Comprising said Battery System - A battery system comprises at least one battery module and a docking station on which the at least one battery module is arranged in a separately removable manner. Preferably, the docking station comprises supply and/or power connections for the battery system. | 02-12-2015 |
20150042263 | Method for Balancing the Charge States of Battery Cells in a Battery and Battery for Implementation of the Method - A method is described for the control of a battery comprising at least one battery module string with a number of battery modules connected in a series. Each battery module comprises at least one battery cell, at least one coupling unit, a first connection and a second connection and is designed for accommodating one of at least two switching states depending on an actuation of the coupling unit. Different switching states correspond to different voltage values between the first connection and the second connection of the battery module. A first and second output voltage of the battery module string are provided and applied to an inductivity during a first and second time interval. In the process, the second output voltage has the opposite polarity of the first output voltage. | 02-12-2015 |
20150064513 | Method for Activating a Plurality of Monitoring Units for a Battery, Battery and Motor Vehicle having said Battery - A battery comprises a plurality of battery modules, a plurality of monitoring units with a respective monitoring unit connected to a battery module, a battery control unit, and a first communication network to which the monitoring units are connected. The first communication network is configured to transmit data from or to the battery control unit. Furthermore, the battery comprises a second communication network configured to transmit an activation signal for activating a monitoring unit to a further monitoring unit. | 03-05-2015 |
20150145443 | Autonomous Battery Balancing - A device is introduced for cell-balancing a plurality of battery cells connected in series. The device includes a measuring device which is connectable to each of the battery cells and which is configured to generate a current which is proportional to a minimum cell voltage of all the cell voltages of the battery cells and to output the current to resistors which are connected in series. The device also contains a multiplicity of comparators which compare a cell voltage of an assigned battery cell to the minimum cell voltage which is replicated by the current which is proportional to the minimum cell voltage and the resistors. The comparators are configured to output a control signal, which is dependent on a result of the comparison, to an assigned discharging unit which allows a discharge current to flow from the respective battery cell as a function of the control signal. | 05-28-2015 |