EP3573864A1 - Bloc de batterie et procédé permettant de faire fonctionner un bloc de batterie - Google Patents

Bloc de batterie et procédé permettant de faire fonctionner un bloc de batterie

Info

Publication number
EP3573864A1
EP3573864A1 EP18700655.6A EP18700655A EP3573864A1 EP 3573864 A1 EP3573864 A1 EP 3573864A1 EP 18700655 A EP18700655 A EP 18700655A EP 3573864 A1 EP3573864 A1 EP 3573864A1
Authority
EP
European Patent Office
Prior art keywords
converter
terminal
battery
voltage
coupling
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.)
Withdrawn
Application number
EP18700655.6A
Other languages
German (de)
English (en)
Inventor
Matthias Gernsbeck
Michael STEIL
Andreas Lemke
Jens KOERNER
Frank Stiegler
Karl KLOESS
Bernd Heppner
Manuel Hohenauer
Steffen Adolf
Klaus-Juergen Schuler
Henryk WEIHS
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
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3573864A1 publication Critical patent/EP3573864A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • 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
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/11—Electric energy storages
    • B60Y2400/112—Batteries
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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

Definitions

  • the invention relates to a battery unit for use on a vehicle electrical system of a motor vehicle, comprising a battery module and a coupling unit for
  • Battery module connected to the first terminal, a connectable to the electrical system second terminal, a first DC-DC converter and a second DC-DC converter comprises.
  • the invention also relates to a method for operating a battery unit according to the invention on a vehicle electrical system of a motor vehicle.
  • lead-acid batteries are generally used as energy stores in a 12V vehicle electrical system.
  • a lead-acid battery which has a positive pole and a negative pole, serves inter alia as a starter battery for starting the
  • Combustion engine The electrical system and its functionalities are tailored to the properties of the lead-acid battery, such as internal resistance, charge-discharge characteristic and open circuit voltage.
  • a correct detection of the condition of the lead-acid battery in the motor vehicle is important here.
  • the state, in particular the state of charge, of the lead-acid battery is used by the motor vehicle as the basis for functions of an energy management and can therefore have a massive negative influence on the vehicle behavior and the availability in the case of incorrect detection.
  • Safety-relevant functionalities of the motor vehicle can also be affected.
  • a battery sensor connected to the lead acid battery will detect the condition of the lead acid battery.
  • the battery sensor measures a current flowing through the lead-acid battery as well as a voltage applied to the poles of the lead-acid battery and, in particular, determines the state of charge and the aging of the lead-acid battery.
  • a lithium-ion battery has different characteristics than a lead-acid battery due to the different technology. These include, inter alia, a lower
  • a lithium-ion battery module which has a housing whose dimensions correspond to those of a housing of a conventional lead-acid battery.
  • the lithium-ion battery module also includes one or more DC-DC converter, whereby several different output voltages are available at different poles of the lithium-ion battery module.
  • DE 10 2010 014 104 AI discloses an electrical power system for a motor vehicle.
  • the energy on-board network comprises a battery arranged in a sub-board network, which is coupled via a coupling device to another sub-board network.
  • the coupling device comprises two parallel-connected DC-DC converter and a bypass switch for bridging the DC-DC converter.
  • the battery unit comprises a battery module and a coupling unit for coupling the battery module to the electrical system of the motor vehicle.
  • the coupling unit has a first terminal connected to the battery module, a second terminal connectable to the electrical system, a first DC-DC converter and a second
  • the battery unit is used in particular to replace a failed lead-acid battery as a starter battery for a
  • the first DC-DC converter allows a
  • the battery unit comprises a control system for controlling the first
  • the coupling unit preferably also has means for measuring a coupling current flowing through the coupling unit between the first connection and the second connection.
  • the first DC-DC converter is designed for example as a split-Pi converter, which has a plurality of electronic switches.
  • the corresponding control of the switches of the first DC-DC converter are a first voltage at the first terminal and a second voltage Generable at the second port.
  • the first DC-DC converter is preferably designed such that a relatively high coupling current can flow in both directions.
  • the second DC-DC converter is designed, for example, as a SEPIC converter (single-ended primary inductance converter), which has at least one electronic switch. By appropriate control of the at least one switch of the second DC-DC converter, the second voltage can be generated at the second terminal.
  • SEPIC converter single-ended primary inductance converter
  • the DC-DC converter may for example be designed as a split-Pi converter.
  • the second DC-DC converter is preferably configured in such a way that a relatively low power loss drops when a relatively small coupling current flows from the first terminal to the second terminal.
  • the two DC-DC converters do not generate a constant second voltage that would be independent of the first voltage.
  • the second voltage which is applied to the electrical system, is dependent on the first voltage applied to the battery module.
  • the DC-DC converters are able to generate a variable second voltage, which depends on the first voltage.
  • the dependence of the second voltage on the first voltage is usually not linear.
  • the first DC-DC converter is also capable of generating a variable first voltage, which is dependent on the second voltage with appropriate control. Also this dependence of the first
  • Voltage from the second voltage is usually not linear.
  • the battery module of the battery unit on a plurality of battery cells which are designed as lithium-ion cells.
  • lithium-ion cells have a longer life, improved cycle life, higher energy density, and higher compared to cells of lead-acid batteries
  • the type of battery cells is not limited to lithium-ion cells.
  • lithium-sulfur cells lithium-air cells
  • supercapacitors are suitable for all types of secondary cells.
  • lithium-sulfur cells lithium-air cells
  • supercapacitors are suitable for all types of secondary cells.
  • the DC-DC converter can be connected to each other.
  • the bypass path for this purpose includes a controllable by the control system
  • a method for operating a battery unit according to the invention on a vehicle electrical system of a motor vehicle is also proposed.
  • the battery unit is installed in the motor vehicle and the second connection of the
  • Coupling unit of the battery unit is connected to the electrical system of the motor vehicle.
  • a flowing through the coupling unit is doing
  • DC-DC converter is switched off. Under these conditions, the motor vehicle is in a rest mode.
  • the battery module is discharged and provides only a relatively low quiescent current, which is smaller than the first limit.
  • the quiescent current flows exclusively through the second DC-DC converter.
  • the DC-DC converter can be switched off. In these Conditions is the motor vehicle in a regular operation.
  • the battery module is discharged and provides an average operating current that is less than the second threshold and greater than the first threshold.
  • the operating current flows largely or exclusively through the first DC-DC converter.
  • the second DC-DC converter when the second DC-DC converter is switched on, the second DC-DC converter generates a second voltage at the second terminal as a function of a first voltage at the first terminal.
  • the first voltage on the battery module is in particular of the
  • the first voltage may also depend on other state variables, including a flowing current and the aging of the
  • the second DC-DC converter and generated by the second DC-DC converter such that the second voltage at a given state of charge of the battery module corresponds to the first voltage of the lead-acid battery in the same state of charge.
  • the second voltage on the electrical system thus corresponds to the first voltage at the lead-acid battery, which would have the lead-acid battery at the same state of charge.
  • Conditions is the motor vehicle in a loading operation.
  • the battery module is charged with a charging current.
  • the charging current flows largely or exclusively through the first DC-DC converter.
  • the first DC-DC converter when the coupling current flows from the second terminal to the first terminal and the first DC-DC converter is switched on, the first DC-DC converter generates a first voltage at the first terminal in response to a second voltage at the second terminal.
  • the DC-DC converter switched on.
  • the first DC-DC converter and the second DC-DC converter can be switched off.
  • the motor vehicle is in a starting mode, for example.
  • the battery module is discharged and provides a relatively high starting current for a starter, which is greater than the second limit.
  • the starting current flows largely or exclusively through the
  • a battery unit according to the invention and a method according to the invention are advantageously used on a vehicle electrical system of a motor vehicle, in particular of a motor vehicle with an internal combustion engine. Particularly advantageous are the battery unit according to the invention and the
  • the invention allows replacement of a conventional 12V lead-acid battery with a 12V lithium-ion battery while ensuring all
  • DC-DC converters thus enable the use of a lithium-ion battery in motor vehicles, which are tuned to the properties of a lead-acid battery.
  • DC-DC converter the voltage applied to the lithium-ion battery first voltage to a second voltage on the electrical system and on the
  • Battery sensor can be imaged, which corresponds to the voltage at the lead-acid battery under the same conditions, especially at the same state of charge.
  • a charging current and an average operating current can flow through the first DC-DC converter.
  • a quiescent current can flow through the second DC-DC converter, which reduced one
  • DC converter are covered, as well as an emergency operation of the coupling unit and the battery unit in case of a defect or failure of a DC-DC converter.
  • FIG. 1 shows a battery unit to an electrical system of a motor vehicle and Figure 2 shows a coupling unit of the battery unit of Figure 1.
  • FIG. 1 shows a battery unit 10 on a vehicle electrical system 50 of a motor vehicle.
  • vehicle electrical system 50 the voltage-carrying supply lines are referred to in the motor vehicle in this context.
  • the vehicle electrical system 50 in the present case has a nominal voltage of 12 V with respect to a ground line 55 in the motor vehicle.
  • the battery unit 10 comprises a battery module 20, which several
  • Battery cells which are designed as lithium-ion cells.
  • the battery cells are connected in series, for example, and deliver one
  • the battery module 20 has a negative terminal 21 and a positive terminal 22. Between the terminals 21, 22 of the battery module 20 is supplied by the said battery cells voltage.
  • the battery unit 10 includes a positive pole 12, which is connected to the electrical system 50.
  • the battery unit 10 also includes a negative pole 11 which is connected to a battery sensor 52 and to the negative terminal 21 of the battery module 20.
  • the battery sensor 52 is connected to the vehicle electrical system 50 and to the ground line 55. Furthermore, the battery sensor 52 is connected by means of a bus interface 53 to a higher-level control unit of the
  • the battery sensor 52 measures, inter alia, a voltage applied between the positive pole 12 and the negative pole 11 of the battery unit 10, which corresponds to a voltage between the vehicle electrical system 50 and the ground line 55. Also, the battery sensor 52 measures a current flowing from the ground line 55 to the negative pole 11, which current flows through the
  • the battery sensor 52 determines a state, in particular a state of charge, of
  • Battery module 20 of the battery unit 10 The battery sensor 52 transmits the determined state of the battery module 20 of the battery unit 10 to the higher-level control unit of the motor vehicle.
  • the battery unit 10 further comprises a coupling unit 30, which is shown in detail in FIG.
  • This coupling unit 30 has a first one
  • the coupling unit 30 also has a first terminal 31 which is connected to the positive terminal 22 of the battery module 20.
  • the coupling unit 30 also has a second terminal 32, which is connected to the positive pole 12 of the battery unit 10.
  • the coupling unit 30 has a ground connection 33, which is connected to the negative pole 11 of the battery unit 10 and to the negative terminal 21 of the battery module 20.
  • the battery unit 10 further comprises a control system 40, which in particular serves to control the DC-DC converters 41, 42 and the bypass path 44 of the coupling unit 30.
  • the control system 40 and the coupling unit 30 are connected to each other, for example, via a bus line, not shown here.
  • the battery module 20, the coupling unit 30 and the control system 40 of the battery unit 10 are in the present case designed as separate elements and arranged as a structural unit in a common housing.
  • the control system 40, the DC-DC converter 41, 42 and the bypass path 44 could also be combined in one or more units.
  • FIG. 2 shows the coupling unit 30 of the battery unit 10 shown in FIG. 1.
  • a first voltage U1 which corresponds to the voltage of the battery module 20.
  • a second voltage U2 which corresponds to the voltage of the electrical system 50.
  • a coupling current Ik flows through the coupling unit 30 in the direction from the first terminal 31 to the second terminal 32. If the coupling current Ik flows in the opposite direction, then the coupling current Ik is negative.
  • a current flowing through the ground terminal 33 becomes the following
  • the first DC-DC converter 41 and the second DC-DC converter 42 are connected in parallel and connected to the first terminal 31, the second terminal 32 and the ground terminal 33, respectively.
  • a bypass path 44 is provided, which is connected to the first terminal 31 and the second terminal 32.
  • a bypass switch 45 and a shunt resistor 46 for measuring a current flowing through the bypass path 44 are arranged.
  • the shunt resistor 46 may be disposed before or after the bypass switch 45. Instead of the shunt resistor 46, another type of sensor can be used for current measurement.
  • the first DC-DC converter 41 is presently designed as a split-Pi converter, which has a plurality of electronic switches, not shown here.
  • the first DC-DC converter 41 allows bidirectional current flow. Also, the first DC-DC converter 41 allows a
  • the first voltage U1 and the second voltage U2 can be generated by corresponding activation of the switches of the first DC-DC converter 41.
  • the first DC-DC converter 41 has means for measuring a current flowing through the first DC-DC converter 41.
  • the second DC-DC converter 42 is presently designed as a SEPIC converter, which has at least one electronic switch, not shown here.
  • the second DC-DC converter 42 allows a unidirectional current flow from the first terminal 31 to the second terminal 32. Also allows the second DC-DC converter 42, a generation of the second voltage U2.
  • the second voltage U2 can be generated by appropriate control of the switch or the switch of the second DC-DC converter 42.
  • DC-DC converter 42 has means for measuring a current flowing through the second DC-DC converter 42 current.
  • the bypass switch 45 of the bypass path 44 and the electronic switch of the DC-DC converter 41, 42 are controlled by the control system 40. Furthermore, the means for current measurement of the
  • Bypass path 44 connected to the control system 40.
  • the control system 40 calculates the coupling current Ik.
  • the coupling unit 30 may also have a means, in particular a sensor, for the direct measurement of the coupling current Ik. This sensor can be arranged behind the first connection 31.
  • a current operating phase of the motor vehicle is determined.
  • the determined operating phase of the motor vehicle is determined.
  • DC-DC converter 42 are turned off.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un bloc de batterie destiné à être utilisé sur un réseau de bord d'un véhicule automobile, le bloc de batterie comportant un module de batterie et une unité de couplage (30). L'unité de couplage comprend une première et une deuxième borne (31 respectivement 32) ainsi qu'un premier et un deuxième convertisseur continu-continu (41 respectivement 42). Le premier convertisseur continu-continu (41) autorise un flux de courant bidirectionnel entre les bornes (31, 32). Le deuxième convertisseur continu-continu (42) autorise un flux de courant de la première borne (31) à la deuxième borne (32). Le bloc batterie comporte un système de commande. Le système de commande commande les convertisseurs continu-continu. L'invention concerne également un procédé permettant de faire fonctionner le bloc de batterie sur un réseau de bord de véhicule automobile. Un courant de couplage (Ik) circulant à travers l'unité de couplage (30) est mesuré. Lorsque le courant de couplage (Ik) circule de la première borne (31) à la deuxième borne (32) et passe en dessous d'une première valeur limite, le deuxième convertisseur continu-continu (42) est activé et le premier convertisseur continu-continu (41) est désactivé.
EP18700655.6A 2017-01-26 2018-01-12 Bloc de batterie et procédé permettant de faire fonctionner un bloc de batterie Withdrawn EP3573864A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017201241.2A DE102017201241A1 (de) 2017-01-26 2017-01-26 Batterieeinheit und Verfahren zum Betrieb einer Batterieeinheit
PCT/EP2018/050725 WO2018137943A1 (fr) 2017-01-26 2018-01-12 Bloc de batterie et procédé permettant de faire fonctionner un bloc de batterie

Publications (1)

Publication Number Publication Date
EP3573864A1 true EP3573864A1 (fr) 2019-12-04

Family

ID=61003003

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18700655.6A Withdrawn EP3573864A1 (fr) 2017-01-26 2018-01-12 Bloc de batterie et procédé permettant de faire fonctionner un bloc de batterie

Country Status (5)

Country Link
US (1) US20190375353A1 (fr)
EP (1) EP3573864A1 (fr)
CN (1) CN110198868A (fr)
DE (1) DE102017201241A1 (fr)
WO (1) WO2018137943A1 (fr)

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US11569668B2 (en) * 2020-07-14 2023-01-31 Igrenenergi, Inc. System and method for dynamic balancing power in a battery pack

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JP3827935B2 (ja) * 2000-10-16 2006-09-27 株式会社パワーシステム 車両用電源装置
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US20190375353A1 (en) 2019-12-12
CN110198868A (zh) 2019-09-03
WO2018137943A1 (fr) 2018-08-02

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