WO2012052224A1 - Procédé de commande d'une batterie à tension de sortie variable - Google Patents

Procédé de commande d'une batterie à tension de sortie variable Download PDF

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Publication number
WO2012052224A1
WO2012052224A1 PCT/EP2011/065650 EP2011065650W WO2012052224A1 WO 2012052224 A1 WO2012052224 A1 WO 2012052224A1 EP 2011065650 W EP2011065650 W EP 2011065650W WO 2012052224 A1 WO2012052224 A1 WO 2012052224A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
battery module
output
control signal
voltage
Prior art date
Application number
PCT/EP2011/065650
Other languages
German (de)
English (en)
Inventor
Ralph Schmidt
Stefan Butzmann
Holger Fink
Original Assignee
Sb Limotive Company Ltd.
Sb Limotive Germany Gmbh
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 Sb Limotive Company Ltd., Sb Limotive Germany Gmbh filed Critical Sb Limotive Company Ltd.
Publication of WO2012052224A1 publication Critical patent/WO2012052224A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • 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
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • 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
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0025—Sequential battery discharge in systems with a plurality of batteries
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/667—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an electronic component, e.g. a CPU, an inverter or a capacitor
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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 method of controlling a variable output voltage battery and a battery configured to perform the method.
  • 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.
  • FIG. 1 The block diagram of a conventional electric drive system, 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 11 is buffered. Connected to the DC voltage intermediate circuit is a pulse inverter 12, which is connected via two switchable semiconductor valves and two diodes at three outputs against each other phase-offset sinusoidal currents for the operation of an electric drive motor 13 provides.
  • the capacitance of the capacitor 11 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 and 19, respectively, which are provided to disconnect the battery cells from the battery terminals in order to disconnect the battery terminals from voltage. Because of the high
  • 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 19 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.
  • Batteries have now been proposed in which battery modules are interconnected, which can be activated and deactivated. In the active state are the Battery cells of the battery module connected to its outputs, so that the voltage of the battery module participates in the generation of the battery voltage. In the deactivated state, however, the battery cells of a battery module are disconnected from its outputs and the outputs bridged, so that the 5 battery module voltage is zero.
  • the battery voltage can be variably adjusted, so that the
  • DC voltage intermediate circuit, the pulse inverter and possibly also the charging contactors can be omitted.
  • the l o load should be distributed as evenly as possible on the battery modules, so that the battery cells of the battery modules are uniformly discharged and age evenly.
  • Each battery module comprises at least one battery cell and a coupling unit.
  • the at least one battery cell is connected between a first input and a second input of the coupling unit, which is designed, in response to a first control signal, the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module
  • Terminal to connect to the second terminal, leaving a
  • Battery module voltage of the battery module assumes a voltage dependent on the first and second control signal voltage value.
  • the method has at least one step of generating a rising output voltage
  • Battery module string is the time during which a single battery module to generate the output voltage of the
  • Battery module string participates, largely aligned.
  • the first control signal is continuously output to a respective battery module from a respective first output timing during the first time period until the second control signal is output to the respective battery module at a respective second output timing during the second time period. This minimizes losses due to switching operations.
  • the first output time of a first battery module may be prior to the first output time of a second battery module, wherein the second output time of the first battery module is before the second output time of the second battery module.
  • the first and the second output time of a third battery module can be simultaneously with the first and second
  • Battery module string can be achieved, both battery modules experience an equal load.
  • a earliest second output time of the second output time is also preferable to a latest first time of the first output time.
  • Battery module strand on a sinusoidal course.
  • the battery can be connected directly to a consumer that is designed for operation in an AC voltage network.
  • sinusoidal is meant here also a gradual course, which approximates a sine.
  • the sinusoidal profile of the output voltage preferably has a predefinable frequency.
  • a plurality of sinusoidal output voltages are preferably generated, wherein each of the sinusoidal output voltages is phase-shifted with respect to the remaining sinusoidal output voltages. This allows electrical machines to be powered directly from the battery. If three sinusoidal output voltages are generated, machines designed for a three-phase utility network can be modified or modified without modification
  • a second aspect of the invention introduces a battery having a plurality of battery modules connected in series to a battery module string and a control unit.
  • Each battery module comprises at least one battery cell and a coupling unit, wherein the at least one battery cell connected between a first input and a second input of the coupling unit and the coupling unit is formed on a first control signal towards the at least one battery cell between a first terminal of the battery module and a second Terminal of the battery module to switch and on a second control signal to connect the first terminal to the second terminal, so that a
  • Battery module voltage of the battery module assumes a voltage dependent on the first and second control signal voltage value.
  • the control unit is configured to generate and output the first and second control signals to the battery modules and to perform the method according to one of
  • the coupling unit may have a first output and be configured to connect to the first control signal either the first input or the second input to the output.
  • the output is connected to one of the terminals of the battery module and one of the first or second input to the other of the terminals of the battery module.
  • Semiconductor switches such as MOSFETs or IGBTs can be realized.
  • the coupling unit may have a first output and a second output and be configured to connect the first input to the first output and the second input to the second output in response to the first control signal.
  • the coupling unit is also
  • This embodiment requires a slightly higher circuit complexity (usually three switches), but decouples the battery cells of the battery module at its two poles, so that switched off in an impending deep discharge or damage to a battery module whose battery cells and thus replaced safely in the continuous operation of the overall arrangement can.
  • the coupling unit may comprise a first input, a second input, a first output and a second output and configured to connect the first input to the first output and the second input to the second output in response to a first control signal and connect, in response to a second control signal, the first input to the second output and the second input to the first output.
  • Output voltages are generated, covering a twice as large voltage range with the same number of battery modules.
  • each battery module has only one battery cell or only a parallel connection of battery cells. In this case, the
  • Output voltage of a battery module string are set the finest. As is generally preferred within the scope of the invention,
  • Lithium-ion battery cells used which have a cell voltage between 2.5 and 4.2 V, the output voltage of the battery could be adjusted accordingly.
  • the more accurate the output voltage of the battery is adjustable the smaller the problem of electromagnetic compatibility, because the radiation caused by the battery current decreases with its high-frequency components. However, this is an elevated
  • a third aspect of the invention relates to a motor vehicle with an electric
  • Figure 3 shows a first embodiment of a coupling unit for use in the
  • Figure 4 shows a possible circuit implementation of the first
  • FIGS. 5 and 6 show two embodiments of a battery module with the first embodiment of the coupling unit
  • FIG. 7 shows a second embodiment of a coupling unit for use in the battery according to the invention
  • FIG. 8 shows a possible circuit implementation of the second and third embodiments of the coupling unit
  • Figure 9 shows a possible circuit implementation of the third
  • FIG. 10 shows an embodiment of a battery module with the second or third embodiment of the coupling unit
  • FIG. 11 shows a first embodiment of the battery according to the invention
  • FIG. 12 shows a drive system with a further embodiment of the
  • Figure 13 shows a time course of an output voltage
  • FIG. 3 shows a first embodiment of a coupling unit 30 for use in the battery according to the invention.
  • the coupling unit 30 has two inputs 31 and 32 and an output 33 and is designed to connect one of the inputs 31 or 32 to the output 33 and to decouple the other.
  • FIG. 4 shows a possible circuit implementation of the first embodiment of the coupling unit 30, in which a first and a second switch 35 or 36 are provided. Each of the switches is between one of the inputs 31 and 32 and the output 33 connected.
  • This embodiment has the advantage that both inputs 31, 32 can be decoupled from the output 33, so that the output 33 becomes high-impedance, which may be useful, for example, in the case of repair or maintenance.
  • the switches 35, 36 simply as
  • Semiconductor switches have the advantage of a low price and a high switching speed, so that the coupling unit 30 can respond to a control signal or a change of the control signal within a short time and high switching rates can be achieved.
  • the invention Compared to a conventional pulse inverter, which generates a desired voltage shape by appropriate choice of a duty cycle between maximum and minimum DC voltage (pulse width modulation), the invention has the advantage that the switching frequencies of the switches contained in the coupling units is much lower, as in principle, each switch only once each period of the output voltage to be generated is closed and reopened. As a result, the electromagnetic compatibility (EMC) is improved and it can be made lower demands on the switch.
  • EMC electromagnetic compatibility
  • Figures 5 and 6 show two embodiments of a battery module 40 with the first embodiment of the coupling unit 30.
  • Battery cells 11 is connected between the inputs of the coupling unit 30 in series.
  • the invention is not limited to such a series connection of battery cells 11, it can also be provided only a single battery cell 1 1 or a parallel connection or mixed-serial-parallel circuit of battery cells 1 1.
  • Battery cells 11 connected to a second terminal 42.
  • an almost mirror-image arrangement as in FIG. 6 is possible in which the positive pole of the battery cells 11 is connected to the first terminal 41 and the output of the coupling unit 30 to the second terminal 42.
  • FIG. 7 shows a second embodiment of a coupling unit 50 for use in the battery according to the invention.
  • the coupling unit 50 has two inputs 51 and 52 and two outputs 53 and 54. It is formed, either the first input 51 to the first output 53 and the second input 52 to the connect either the first input 51 to the second output 54 and the second input 52 to the first output 53 or to connect the first output 53 to the second output 54 (and thereby the inputs 51 and / or Disconnect 52).
  • this can also be designed to separate both inputs 51, 52 from the outputs 53, 54 and also to decouple the first output 53 from the second output 54. However, it is not intended to connect both the first input 51 to the second input 52.
  • FIG. 8 shows a possible circuit implementation of the second embodiment of the coupling unit 50, in which a first, a second and a third switch 55, 56 and 57 are provided.
  • the first switch 55 is connected between the first input 51 and the first output 53
  • the second switch 56 is connected between the second input 52 and the second output 54 and the third switch 57 between the first output 53 and the second output 54.
  • Figure 9 shows a possible circuit implementation of the third
  • Embodiment of the coupling unit 50 in which a first, a second, a third and a fourth switch 55, 56, 58 and 59 are provided.
  • the first switch 55 is connected between the first input 51 and the first output 53
  • the second switch 56 is between the second input 52 and the second output 54
  • the third switch 58 between the first input 51 and the second output 54
  • the fourth Switch 59 connected between the second input 52 and the first output 53.
  • IGBTs Insulated Gate Bipolar Transistor
  • Semiconductor switches have the advantage of a low price and a high switching speed, so that the coupling unit 50 within a short time to a control signal or a change in the
  • FIG. 10 shows an embodiment of a battery module 60 with the second or third embodiment of the coupling unit 50.
  • Battery cells 11 is connected in series between the inputs of a coupling unit 50.
  • This embodiment of the battery module 60 is not limited to such a series connection of battery cells 11, it may again be provided only a single battery cell 11 or a
  • the first output of the coupling unit 50 is connected to a first terminal 61 and the second output of the coupling unit 40 to a second terminal 62.
  • the battery module 60 offers over the battery module 40 of FIGS
  • Battery module is applied to the battery or that both the positive and the negative battery module voltage can be connected to the outputs.
  • FIG. 11 shows a first embodiment of the battery according to the invention, which has n battery module strings 70-1 to 70-n.
  • Battery module string 70-1 to 70-n has a plurality of battery modules 40 or 60, preferably each battery module string 70-1 to 70-n the same number of battery modules 40 or 60 and each battery module 40 or 60 the same number of battery cells 1 1 in more identical Contains way interconnected.
  • One pole of each battery module string 70-1 to 70-n may be connected to a corresponding pole of the other battery module strings 70-1 to 70-n, which is indicated by a dashed line in FIG.
  • one battery module string 70-1 to 70-n may include any number of battery modules 40 or 60 greater than 1 and one battery each number of battery module strings 70-1 to 70-n.
  • additional charging and disconnecting devices and disconnecting devices may be provided as in FIG. 2, if safety regulations so require. However, such separators are not necessary according to the invention, because a
  • FIG. 12 shows a drive system with a further embodiment of the battery according to the invention.
  • the battery has three battery module strings 70-1, 70-2 and 70-3, which are each connected directly to an input of a drive motor 13. Since most available electric motors are designed for three-phase operation, the battery of the invention preferably has exactly three battery module strings.
  • the battery of the invention has the further advantage that the functionality of a pulse inverter is already integrated in the battery. By a control unit of the battery, a variable number of battery modules 40 or 60 of a
  • Battery module string enabled stands at the output of the battery module string to the number of activated battery modules 40 or 60 proportional voltage, which is between 0 V and the full
  • Output voltage of the battery module string may be available.
  • the control unit realizes the control method according to the invention, whereby the loads of the battery cells 11 of the individual battery modules 40 or 60 are matched to one another as far as possible.
  • FIG. 13 shows an exemplary time profile of an output voltage of the battery according to the invention and control signals for a number of battery modules according to the method according to the invention.
  • Output voltage of the battery (or a battery module line) V is plotted over the time t.
  • Reference numeral 80-b is a desired (ideal) sine for an exemplary application
  • the ideal sine is approximately generated by the battery according to the invention by a value-discrete voltage curve 80-a.
  • the deviations of the discrete-value voltage curve 80-a from the ideal curve 80-b depend on the size of the number of battery cells 11, which are connected in series in a battery module 40 or 60. The fewer battery cells 1 1 are connected in series in a battery module 40 or 60, the more accurately the value-discrete voltage curve 80-a can follow the idealized curve 80-b. In usual applications, the relatively low affect
  • Battery module strand interconnected The battery modules have a uniform battery module voltage V M , so that a total of nine different voltage levels between 0 V and 8 * V M result in the diagram.
  • the lower part of the diagram shows (binary) control signals M1 to M8 for the eight battery modules.
  • a high voltage level mean the
  • the battery modules are deactivated in the same order in which they were activated.
  • the control signal M 1 is set to a low voltage level, then the control signal M2 and so on.
  • each battery module is activated half a period and half a period is deactivated so that identical loads of the individual battery modules result and the switching frequencies of the switches of the coupling units of the individual battery modules are minimized.
  • the invention has the advantages of reducing the number of high-voltage components, of plug connections and offers the possibility of a cooling system of the battery with that of the
  • the coupling units offer an integrated safety concept for pulse inverters and battery and increase the reliability and availability of the
  • Coupling unit can be constructed. As a result, the use of identical parts (modular principle) is possible.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un procédé de commande d'une batterie comprenant une pluralité de modules de batterie (40, 60) connectés en série pour former une chaîne de modules de batterie (70), lequel procédé permettant de répartir la charge des modules de batterie (40, 60) aussi uniformément que possible. Le procédé comprend une étape de génération d'une tension de sortie croissante de la chaîne de modules de batterie (70) par activation d'un nombre croissant de modules de batterie (40, 60) pendant un premier intervalle de temps et une étape de génération d'une tension de sortie décroissante de la chaîne de modules de batterie (70) par désactivation d'un nombre croissant de modules de batterie (40, 60) pendant un deuxième intervalle de temps faisant suite au premier intervalle de temps. Selon l'invention, une première séquence de modules de batterie (40, 60) dans laquelle les modules de batterie (40, 60) sont activés pendant le premier intervalle de temps est égale à la deuxième séquence de modules de batterie (40, 60) dans laquelle les modules de batterie (40, 60) sont désactivés pendant le deuxième intervalle de temps.
PCT/EP2011/065650 2010-10-20 2011-09-09 Procédé de commande d'une batterie à tension de sortie variable WO2012052224A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010042718 DE102010042718A1 (de) 2010-10-20 2010-10-20 Verfahren zur Steuerung einer Batterie mit variabler Ausgangsspannung
DE102010042718.7 2010-10-20

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WO2012052224A1 true WO2012052224A1 (fr) 2012-04-26

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