EP2705598A2 - Unité d'entraînement pour moteur électrique - Google Patents

Unité d'entraînement pour moteur électrique

Info

Publication number
EP2705598A2
EP2705598A2 EP12716047.1A EP12716047A EP2705598A2 EP 2705598 A2 EP2705598 A2 EP 2705598A2 EP 12716047 A EP12716047 A EP 12716047A EP 2705598 A2 EP2705598 A2 EP 2705598A2
Authority
EP
European Patent Office
Prior art keywords
battery
drive unit
battery module
output
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP12716047.1A
Other languages
German (de)
English (en)
Inventor
Stefan Butzmann
Holger Fink
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Samsung SDI Co Ltd
Original Assignee
Robert Bosch GmbH
Samsung SDI Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH, Samsung SDI Co Ltd filed Critical Robert Bosch GmbH
Publication of EP2705598A2 publication Critical patent/EP2705598A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/21—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • H02P27/14—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation with three or more levels of voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a drive unit for an electric motor and a motor vehicle with the drive unit according to the invention.
  • Battery systems will be used. In order to meet the voltage and available power requirements of a particular application, a large number of battery cells are connected in series. Since the power provided by such a battery must flow through all the battery cells and a battery cell can only conduct a limited current, battery cells are often additionally connected in parallel in order to increase the maximum current. This can be done either by providing multiple cell wraps within a battery cell housing or by externally interconnecting battery cells. It is, however,
  • FIG. 1 The block diagram of a conventional electric drive unit, as used for example in electric and hybrid vehicles or in stationary applications such as in the rotor blade adjustment of wind turbines is shown in Figure 1.
  • a battery 10 is connected to a
  • Capacitor 1 1 is buffered.
  • a pulse inverter 12 Connected to the DC voltage intermediate circuit is a pulse inverter 12, which in each case has two switchable Semiconductor valves and two diodes at three outputs against each other
  • the capacitance of the capacitor 1 1 must be large enough to stabilize the voltage in the DC link for a period of time in which one of the switchable semiconductor valves is turned on. In a practical application such as an electric vehicle results in a high capacity in the range of mF. Because of the usually quite high voltage of the DC intermediate circuit such a large capacity can be realized only at high cost and with high space requirements.
  • FIG. 2 shows the battery 10 of FIG. 1 in a more detailed block diagram.
  • a large number of battery cells are connected in series as well as optionally additionally in parallel, in order to achieve a high level of power for a particular application
  • a charging and disconnecting device 16 is connected between the positive pole of the battery cells and a positive battery terminal 14.
  • a separating device 17 can additionally be connected between the negative pole of the battery cells and a negative battery terminal 15.
  • the separating and charging device 16 and the separating device 17 each include a contactor 18 or 19, which are provided, the battery cells of the battery terminals 14, 15th
  • a charging contactor 20 with a charging resistor 20 connected in series with the charging contactor 20 is provided in the charging and disconnecting device 16.
  • the charging resistor 21 limits a charging current for the capacitor 1 1 when the battery is connected to the DC link.
  • the contactor 18 is initially left open and only the charging contactor 20 is closed.
  • the contactor 18 can be closed and
  • the charging contactor 20 are opened.
  • the contactors 18, 19 and the charging contactor 20 increase the cost of a battery 10 is not insignificant, since high demands are placed on their reliability and the currents to be led by them.
  • the series connection of a large number of battery cells, in addition to the high total voltage, involves the problem that the entire battery fails if a single battery cell fails, because the battery current due to the
  • the invention therefore provides a drive unit for an electric motor, in particular an electric drive motor.
  • the drive unit comprises a multilevel inverter and a battery with at least one
  • a battery module string comprising a plurality of serially connected battery modules.
  • Each battery module comprises at least one battery cell and one
  • the at least one battery cell is connected between a first input and a second input of the coupling unit.
  • the coupling unit is configured, in response to a first control signal, to switch the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module and to connect the first terminal to the second terminal in response to a second control signal.
  • At the battery module string more Mittelabgriffe are arranged, with which a potential at a connection between each two battery modules can be tapped.
  • Each or each of the coupling units disposed in the battery modules may have an output and be configured to respond to the first control signal either the first input or the second input with the Output to connect.
  • the output is connected to the first terminal or to the second terminal of the respective battery module.
  • a battery module or a plurality of battery modules can be arranged. As typically a variety of
  • Center taps is provided on the battery module strand, a different number of battery modules can be arranged between pairs of adjacent center taps. However, it is preferred that the center taps divide the battery module string such that each subdivision of the
  • Battery module string comprises an equal number of battery modules. A plurality of battery modules between two adjacent center taps may be combined to form an overall module.
  • the drive unit comprises a control unit and the
  • Control unit is adapted to the first control signal to a first variable number of battery modules of the at least one battery module string, the second control signal to the remaining battery modules of the at least one
  • Battery module string and a third control signal to the multilevel inverter output This ensures that a potential at an output of the multilevel inverter is variably adjustable.
  • Control signals are selected so that a sinusoidal potential is set at an output of the multilevel inverter.
  • the sinusoidal potential can be adjustable with an adjustable predetermined frequency.
  • Another aspect of the invention relates to a battery, preferably a lithium-ion battery, which comprises a multilevel inverter.
  • the battery in this case forms a drive unit according to the first aspect of the invention.
  • the drive unit according to the invention is covered by the battery.
  • the battery according to the invention comprises at least one battery module stand with battery modules, in which the described coupling units are arranged.
  • Another aspect of the invention relates to a motor vehicle with an electric drive motor for driving the motor vehicle.
  • a drive unit according to the invention is connected, which can also be formed by a battery, if this comprises a multilevel inverter, which is connected to the center taps of a battery module string.
  • FIG. 3 shows a coupling unit which is in a battery module string in the
  • FIG. 4 shows a first embodiment of the coupling unit
  • FIG. 5 shows a second embodiment of the coupling unit
  • Figure 6 shows the second embodiment of the coupling unit in a simple
  • FIGS. 7 and 8 show two arrangements of the coupling unit in a battery module
  • FIG. 10 shows a battery which can be used in the drive unit according to the invention
  • FIG. 11 shows a drive unit for an electric drive motor according to an embodiment of the invention
  • FIG. 12 shows an example of a four-level multilevel inverter, which
  • Figure 13 shows a total module with three battery modules, which in the
  • FIG. 3 shows a coupling unit 30 that can be used in a battery module string in the battery according to the invention.
  • the coupling unit 30 has two inputs 31 and 32 and an output 33 and is adapted to connect one of the inputs 31 or 32 to the output 33 and to decouple the other. In certain embodiments of the coupling unit, this can also be formed, both inputs 31, 32 from the output 33rd
  • Figure 4 shows a first embodiment of the coupling unit 30, which has a changeover switch 34, which in principle only one of the two
  • FIG. 5 shows a second embodiment of the coupling unit 30, in which a first and a second switch 35 or 36 are provided. Each of the switches is connected between one of the inputs 31 and 32 and the output 33. In contrast to the embodiment of Figure 4, this embodiment has the advantage that both inputs 31, 32 can be disconnected from the output 33, so that the output 33 is high impedance.
  • the switches 35, 36 can be easily realized as semiconductor switches such as Metal Oxide Semiconductor Field Effect Transistor (MOSFET) switches or Insulated Gate Bipolar Transistor (IGBT) switches.
  • MOSFET Metal Oxide Semiconductor Field Effect Transistor
  • IGBT Insulated Gate Bipolar Transistor
  • Semiconductor switches have the advantage of a low price and a high switching speed, so that the coupling unit 30 within a short time to a control signal or a change of the control signal
  • Figure 6 shows the second embodiment of the coupling unit in a simple
  • each of the switches 35, 36 each consist of a semiconductor valve which can be switched on and off and a parallel-connected semiconductor valve
  • FIGS. 7 and 8 show two arrangements of the coupling unit 30 in one
  • Battery module 40 A plurality of battery cells 41 (preferably lithium-ion battery cells) is connected between the inputs of a coupling unit 30 in series
  • Battery cells 41 connected to a second terminal 43.
  • the positive pole of the battery cells 41 are connected to the first terminal 42 and the output of the coupling unit 30 to the second terminal 43.
  • FIG. 9 shows the coupling unit 30 shown in FIG. 6 in the arrangement shown in FIG. A control and diagnosis of the coupling units 30 via a signal line 44, which is connected to a control unit, not shown.
  • FIG. 10 shows a battery 10 which can be used in the drive unit according to the invention and which comprises a battery module string 70.
  • Battery module string 70 consists of a plurality of series-connected
  • Battery modules 40 each comprising a coupling unit 30 and as shown in Figure 7 or 8 are constructed.
  • the first terminal 42 of a coupling unit 30 When assembling battery modules 40 to the battery module string 70, the first terminal 42 of a
  • Battery module 40 connected to the second terminal 43 of an adjacent battery module 40.
  • the battery module string 70 illustrated in FIG. 10 comprises six battery modules 40, which are connected between a negative pole 71 and a positive pole 72 of FIG Battery module string 70 are connected.
  • Arranged on the battery module string 70 are two center taps 73-1, 73-2, with which a potential can be tapped off at a connection between in each case two battery modules 40 adjacent in the series connection. This means that each of the two center taps 73-1, 73-2 is respectively connected to a first terminal 42 of a battery module 40 and to the second terminal 43 of an adjacent battery module 40.
  • Battery module string 70 together represent the taps of the battery 10. Due to the fact that the battery modules 40 arranged between the taps respectively
  • Coupling units 30 include, which are adjustable at the taps
  • a control unit is designed to output a first control signal to a variable number of battery modules 40, by means of which the
  • the control unit outputs to the remaining battery modules 40 a second control signal, by which the coupling units 30 of these remaining battery modules 40 connect the first terminal 42 and the second terminal 43 of the respective battery module 40, whereby the battery cells 41 of this battery module 40 are bridged.
  • the voltage between the two center taps 73-1, 73-2 takes up the maximum
  • the second control signal is output to the two battery modules 40, then a voltage 0 V is applied between the two center taps 73-1, 73-2. If the first control signal is output to one of the two battery modules 40 and the second control signal is output to the other battery module, an individual module voltage is applied between the center taps 73-1, 73-2. Are between two adjacent taps 71, 72, 73-1, 73-2 of
  • Battery module strand 70 arranged more than two battery modules 40, so there is a voltage between them, which corresponds to the sum of the module voltages of those battery modules 40, to which the controller outputs the first control signal.
  • the voltage between two taps 71, 72, 73-1, 73-2 of the battery 10 can thus be adjusted in stages between 0 volts and the maximum value.
  • the quantization steps in the setting of the output voltage correspond to the module voltages of
  • Battery modules 40 are thus of the number of battery cells 41 in the
  • the total output voltage between the negative terminal 71 and the positive terminal 72 of the battery module string 70 results from summation of all partial voltages between adjacent taps of the battery module string 71, 72, 73-1, 73-2.
  • the center taps 73-1, 73-2 of the battery module string 70 shown in FIG. 10 subdivide it such that each subdivision of the battery module string 70 comprises two battery modules 40.
  • 1 1 shows a drive unit for an electric drive motor 13 with a battery 10 and a multilevel inverter 80.
  • the multilevel inverter 80 has (n + 1) inputs 81 -1, 81 - (n + 1) and three outputs 82- 1, 82-2, 82-3 and is adapted to one of the potentials at each of its outputs 82-1, 82-2, 82-3
  • the outputs 82-1, 82-2, 82-3 of the multilevel inverter 80 are connected to inputs of the electric drive motor 13. Since most available electric motors are designed for operation with three phase signals, the multilevel inverter 80 preferably has exactly three outputs 82-1, 82-2, 82-3.
  • the inputs 81-1, 81- (n + 1) of the multilevel inverter 80 are connected to both (n-1) center taps 73-1, 73- (n-1) and the poles 71, 72 of the battery 10, which n comprises battery modules 40-1, 40-n with coupling units. In that the potential at each of the
  • Outputs 82-1, 82-2, 82-3 of the multilevel inverter 80 is variable and of the Potential values at its inputs 81 -1, 81- (n + 1) depends and the voltage values applied to these inputs 81 -1, 81 - (n + 1) are in turn adjustable by suitable control of the n battery modules 40-1, 40-n , there are several possible combinations of driving the battery 10 and the multilevel inverter 80, which provide an equal phase signal at the outputs 82-1, 82-2, 82-3 of the
  • Multilevel inverter 80 generate, for example, an approximately sinusoidal AC voltage.
  • the phase signals at the outputs 82-1, 82-2, 82-3 of the multilevel inverter 80 can thus be adjusted in stages.
  • the losses in the electric drive motor 13 can be reduced, since the usual change between positive and negative DC link potential in the inventive arrangement absent. In this way, an improvement in the electromagnetic compatibility of the drive of the electric drive motor 13 is achieved, since the changes in the potential at its inputs are smaller.
  • An improvement in the efficiency of the power electronics in the arrangement according to the invention is also achieved in that in the multilevel inverter 80 switches with metal-oxide-semiconductor field effect transistors (MOSFET) instead of bipolar transistors with insulated gate electrode (IGBT) can be used ,
  • MOSFET metal-oxide-semiconductor field effect transistors
  • IGBT insulated gate electrode
  • the drive can be optimized so that the battery modules 40 can be discharged evenly, and thus, for example, no unwanted reduction of the range of an electric vehicle is created, which by an uneven utilization of the
  • FIG. 12 shows an example of a four-stage multilevel inverter which can be used in the drive unit according to the invention and comprises five inputs 81 -1, 81 -5 and three outputs 82-1, 82-2, 82-3, the latter being connected to the inputs of the electric drive motor 13 are connected.
  • phase signals at the three outputs 82-1, 82-2, 82-3 are each controllable by switching elements which for each of the three outputs 82-1, 82-2, 82-3 in one of three strings 85-1, 85 -2, 85-3 are arranged.
  • the mode of operation of the multilevel inverter 80 shown in FIG. 12 is described below by way of example with reference to the line 85-3, which determines the phase signal at the output 82-3.
  • the strand 85-3 comprises eight switching elements 83-1, 83-8, which each consist of a semiconductor valve which can be switched on and off and a diode connected in parallel with it, similar to the embodiment of FIG.
  • the switching elements 83-1, 83-8 are placed in complementary pairs (83-1, 83-5), (83-2, 83-6), (83-3, 83-7), (83-4 , 83-8).
  • the driving of each of the complementary pairs (83-1, 83-5), (83-2, 83-6), (83-3, 83-7), (83-4, 83-8) is performed such that when one of the switching elements is closed, the complementary switching element is opened.
  • the open state is represented by 0 and the closed state by 1
  • a potential at the output 82-3 of the multilevel inverter is as follows, by a combination of the states of
  • Switching elements 83-1, 83-8 output which equal to the potential at one of the inputs 81 -1, 81 -5 of the multilevel inverter 80:
  • MOSFET metal oxide semiconductor field effect transistor
  • the multilevel inverter shown in FIG. 12 operates with a voltage limitation via a network of diodes 84. These serve to supply the taps 71, 73-1,
  • the diodes 84 must be dimensioned differently in terms of their blocking capability.
  • the largest blocking voltage in the region of the switching elements 83-5, 83-8, for example, must receive the diode 84, which is connected between the input 81 -2 and the switching element 83-5.
  • a battery module (as in FIG. 11) or a plurality of battery modules 40, each having a coupling unit 30, can be arranged. It is also possible to design a plurality of these adjacent battery modules 40 conceptually or with regard to their construction into an overall module 45
  • FIG. 13 shows such an overall module 45, which consists of three series-connected battery modules (submodules) 40-1, 40-2, 40-3.
  • the output voltage of the overall module 45 can be from 0V (when all battery cells are bypassed) in three stages to the maximum
  • Total module voltage (when all battery cells are switched on) can be increased.
  • a drive unit can be constructed, which compared to a conventional drive with inverter with bipolar transistors with insulated gate electrode (IGBT) has a much higher efficiency, especially in the field of partial control with low currents.
  • IGBT insulated gate electrode

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne une unité d'entraînement pour un moteur électrique (13), comportant un onduleur multi-niveau (80) et une batterie (10). Cette batterie (10) comporte au moins une ligne de modules de batterie (70) qui comporte une pluralité de modules de batterie (40-1,..., 40-n) montés en série comportant chacun au moins un élément de batterie (41) et une unité de couplage (30). L'élément de batterie (41) est monté entre une première entrée (31) et une deuxième entrée (32) de l'unité de couplage (30). L'unité de couplage (30) est conçue, en réponse à un premier signal de commande, pour ligner l'élément de batterie (41) entre deux bornes (42, 43) du module de batterie (40-1,..., 40-n), et, en réponse à un second signal de commande (42, 43) pour connecter les deux bornes (42, 43). Plusieurs prises médianes (73-1,..., 73-(n-1)) agencées sur la ligne de modules de batterie (70) permettent de prélever un potentiel au niveau d'une liaison entre deux modules de batterie (40-1,..., 40-n). Les entrées de l'onduleur multi-niveau (80) sont connectées aux prises médianes (73-1,..., 73-(n-1)).
EP12716047.1A 2011-05-06 2012-04-24 Unité d'entraînement pour moteur électrique Ceased EP2705598A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011075429A DE102011075429A1 (de) 2011-05-06 2011-05-06 Antriebseinheit für einen elektrischen Motor
PCT/EP2012/057474 WO2012152578A2 (fr) 2011-05-06 2012-04-24 Unité d'entraînement pour moteur électrique

Publications (1)

Publication Number Publication Date
EP2705598A2 true EP2705598A2 (fr) 2014-03-12

Family

ID=45998399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12716047.1A Ceased EP2705598A2 (fr) 2011-05-06 2012-04-24 Unité d'entraînement pour moteur électrique

Country Status (5)

Country Link
US (1) US9203336B2 (fr)
EP (1) EP2705598A2 (fr)
CN (1) CN103548251B (fr)
DE (1) DE102011075429A1 (fr)
WO (1) WO2012152578A2 (fr)

Families Citing this family (7)

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DE102016112636A1 (de) * 2016-07-11 2018-01-11 Miele & Cie. Kg Elektrische Versorgungsschaltung zur Versorgung wenigstens einers Wechselrichters
DE102020129128A1 (de) 2020-11-05 2022-05-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verteiltes Echtzeitsystem mittels eines modularen Multilevel-Konverters
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US11677333B2 (en) 2021-05-03 2023-06-13 Ekergy Energy, Inc. Multi switch inverter, personal power plant system using thereof and method to generate AC power sine wave
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DE102011075429A1 (de) 2012-11-08
WO2012152578A3 (fr) 2013-08-15
US20140111123A1 (en) 2014-04-24
CN103548251B (zh) 2017-07-07
CN103548251A (zh) 2014-01-29
US9203336B2 (en) 2015-12-01
WO2012152578A2 (fr) 2012-11-15

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