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WO2010046576A2 - Method and device for detecting the end of life of a supercapacitor pack in the electric system of an automobile - Google Patents

Method and device for detecting the end of life of a supercapacitor pack in the electric system of an automobile Download PDF

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Publication number
WO2010046576A2
WO2010046576A2 PCT/FR2009/051914 FR2009051914W WO2010046576A2 WO 2010046576 A2 WO2010046576 A2 WO 2010046576A2 FR 2009051914 W FR2009051914 W FR 2009051914W WO 2010046576 A2 WO2010046576 A2 WO 2010046576A2
Authority
WO
WIPO (PCT)
Prior art keywords
pack
supercapacitor
life
voltage
supercapacitor pack
Prior art date
Application number
PCT/FR2009/051914
Other languages
French (fr)
Other versions
WO2010046576A3 (en
Inventor
Marc Ranier
Benoit Soucaze-Guillous
Bruno Dessirier
Philippe Masson
Ronald Malbranque
Original Assignee
Valeo Equipements Electriques Moteur
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 Valeo Equipements Electriques Moteur filed Critical Valeo Equipements Electriques Moteur
Publication of WO2010046576A2 publication Critical patent/WO2010046576A2/en
Publication of WO2010046576A3 publication Critical patent/WO2010046576A3/en

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Classifications

    • 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
    • B60K6/42—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 the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • 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
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/15—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with additional electric power supply
    • 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
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • 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
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0862—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
    • F02N11/0866—Circuits or control means specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery comprising several power sources, e.g. battery and capacitor or two batteries
    • 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
    • B60K6/26—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 motors or the generators
    • B60K2006/268—Electric drive motor starts the engine, i.e. used as starter motor
    • 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B60L2210/12—Buck 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
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B60L2210/14—Boost 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
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/20—Inrush current reduction, i.e. avoiding high currents when connecting the battery
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0848—Circuits or control means specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/10—Safety devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/64—Testing of capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/08—Structural combinations, e.g. assembly or connection, of hybrid or EDL capacitors with other electric components, at least one hybrid or EDL capacitor being the main component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • 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
    • Y02E60/13—Energy storage using capacitors
    • 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
    • Y02T10/62—Hybrid vehicles
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present invention is generally applicable in the automotive field.
  • the invention relates to a method for detecting the end of life of a supercapacitor pack in a motor vehicle electrical system.
  • a supercapacitor pack is generally formed of a plurality of capacitors of very large capacity called “supercapacitor”, “ultra-capacitor” or “UCAP” by the skilled person. It will be noted here that the invention also relates to a supercapacitor pack comprising a single supercapacitor.
  • this energy can be used to power electrical consumers supporting a floating voltage higher than a battery voltage of the vehicle power supply network.
  • this energy can be used to facilitate starting a vehicle engine by supplying the electric starting machine with a voltage higher than the battery voltage of the vehicle power supply network.
  • the present invention aims to provide a method for detecting the end of life of a supercapacitor pack integrated in an electrical system of a motor vehicle equipped with a heat engine. According to the method according to the invention, the end of life of the supercapacitor pack is detected from measurements made during a starting phase of the engine.
  • the method comprises: a step of calculating a starting time of the heat engine, and
  • the predetermined maximum starting time is of the order of 500 ms.
  • the method comprises: a step of calculating a voltage drop across the supercapacitor pack during the starting phase of the heat engine, and
  • the predetermined maximum voltage drop is of the order of 1 volt.
  • the invention also relates to an electrical system of a motor vehicle, in particular with regenerative braking, and a motor vehicle equipped with such a system.
  • FIG. 1 is a block diagram of a particular embodiment of a micro-hybrid regenerative braking system with a supercapacitor pack in which the method according to the invention is implemented; - Figs.2a relates to a first embodiment of the method according to the invention;
  • FIGS. 3a and 3b relate to a second embodiment of the method according to the invention.
  • FIG. 1 there is now described a particular embodiment 1 of a micro-hybrid regenerative braking system in which is implemented the method according to the invention.
  • the micro-hybrid system 1 essentially comprises a rotating electrical machine 10, a reversible AC / DC converter 11, a capacitive energy storage unit in the form of a supercapacitor pack 12, a DC-DC voltage converter 13 and a microcontroller 14.
  • the micro-hybrid system 1 is connected to a bi-voltage edge network of the motor vehicle capable of providing a low DC voltage Vb and a high floating DC voltage Vb + X.
  • the low DC voltage Vb is generally that of 12 V of a lead-acid battery 2 equipping the motor vehicle.
  • the voltage Vb may be used to supply the motor vehicle consumers requiring a relatively stable voltage value, such as lighting and signaling devices.
  • Vb + X varies for example between 12 and 60 V and is available at the terminals of the supercapacitor pack 12 whose voltage load is dependent in particular on the regenerative braking operation of the rotating electrical machine 10.
  • the voltage Vb + X can be used primarily to supply consumers accepting a variable voltage such as for example a defrosting device. However, in some applications, the voltage Vb + X may also be used to supply, via a dedicated DC-DC converter (not shown), a consumer requesting a stable DC voltage, for example a car radio device powered at 12 V. moreover, the voltage Vb + X in certain applications is also usable for supplying with a voltage greater than 12 V the rotary electrical machine 10 operating in motor / starter mode.
  • the rotary electrical machine 10 is mechanically coupled, link 101, to a thermal engine MT of the motor vehicle.
  • the machine 10 is here a three-phase alternator-starter type machine which, in addition to operating modes starter and alternator, is able to operate also in regenerative braking mode and torque assist mode.
  • the torque assistance mode the machine 10 provides a additional mechanical torque for the traction of the motor vehicle in addition to that provided by the heat engine MT.
  • the AC / DC converter 11 is a reversible device and allows, when the rotary electrical machine 10 is to operate in motor / starter mode, a supply of the machine 10 with three-phase alternating voltages obtained from a DC voltage across the terminals of the supercapacitor pack 12, and when the rotating electrical machine 10 is to operate in alternator mode, a rectification in the form of a rectified DC voltage of the three-phase voltages supplied by the machine 10.
  • This rectified DC voltage charges the supercapacitor pack 12 and , through the DC-DC converter 13, the battery 2.
  • the supercapacitor pack 12 is here essentially formed of a pack of supercapacitors equipped with appropriate electronic circuits.
  • the supercapacitor pack 12 allows, by charging the DC voltage delivered by the AC / DC converter 11, a storage of electrical energy when the rotating electrical machine 10 operates in regenerative braking mode or alternator mode.
  • the energy stored in the supercapacitor pack 12 can be restored on the voltage network Vb + X to supply different consumers and, in some cases, on the voltage network Vb, through the DC / DC converter 13, for example when the machine 10 does not charge and that the battery 2 is unable to respond to a bias current peak on the voltage network Vb.
  • the energy stored in the supercapacitor pack 12, as indicated above, can be used for a starting of the heat engine or a torque assistance thereof at a voltage Vb + X which can be very substantially greater than 12 V conventional, facilitating a supply by the rotary machine 10 large mechanical torques required in the case of large heat engines.
  • the supercapacitor pack 12 comprises an electronic voltage measuring circuit 121.
  • This electronic voltage measuring circuit delivers a measurement Vcap of the voltage across the supercapacitor pack 12.
  • This Vcap measurement is supplied to the microcontroller 14 in order to be exploited by the method according to the invention.
  • the DC / DC converter 13 is a reversible device and allows, on the one hand, a transfer of energy to the voltage network Vb to supply the consumers and charge the battery 2 and, on the other hand, a transfer of energy in the opposite direction from the voltage 12V of the battery 2 to charge the supercapacitor pack 12 if necessary and supply the AC / DC converter 11 when the rotating machine 10 operates as a motor / starter.
  • the microcontroller 14 manages the operation of the microhybrid system 1 from information representative of the internal state of the micro-hybrid system 1 and the state of the motor vehicle.
  • a control strategy module (not shown) is implemented in the microcontroller 14 so as to drive the micro-hybrid system 1.
  • Status information and commands can be exchanged between the microcontroller 14 and various functional elements of the micro-hybrid system 1 through signal exchange links.
  • Signal exchange links L1, L2, L3 and L4 between microcontroller 14 and elements 10, 11, 12 and 13 are shown in FIG.
  • a data communication bus 3 for example of the CAN type, is provided for information exchanges between the micro-hybrid system 1 and one or more electronic control units (ECU). of the motor vehicle, such as the engine control unit. Information such as pressing the brake pedal or the accelerator pedal, or the actual start of the heat engine MT, can thus be transmitted to the micro-hybrid system 1 by an ECU unit 4 through the bus. 3.
  • ECU electronice control units
  • the microcontroller 14 there is also implemented a module 141 whose function, according to the invention, is to detect the end of life of the supercapacitor pack 12.
  • This end-of-life detection module 141 of the supercapacitor pack 12 receives as input the voltage measurement Vcap made at the terminals of the supercapacitor pack 12, and the signals OD and DD which are delivered, in this embodiment, by the motor control unit (not shown) of the vehicle and which respectively indicate a start order of the thermal engine MT and an actual start thereof.
  • the voltage measurement Vcap is conveyed to the microcontroller 14 and module 141 through the signal exchange link L3 and the signals OD and DD are conveyed to the microcontroller 14 and module 141 through the data communication bus 3, the engine control unit being connected to the same bus 3.
  • an FV signal indicating the detection of the end of life of the supercapacitor pack 12 is output by the module 141.
  • the method according to the invention comprises steps E1 to E7 shown in FIG.
  • Step E1 detects a start order of the thermal engine MT from the signal OD which is supplied to the microcontroller 14 and module 141 by the engine control unit.
  • step E2 as shown in Fig.2b, a time t 0 is read and is associated with the detection of the start order OD.
  • the time t 0 is the starting point of a start time measurement T D u of the thermal engine MT.
  • Step E3 detects an effective start of the engine
  • step E4 as shown in FIG. 2b, a time t D is read and is associated with the detection DD of the start of the thermal engine MT.
  • the time t D corresponds to the end of the measurement of the start time T D u of the thermal engine MT.
  • the measurement T D u of the starting time is compared with the step E6 to a maximum value T Dm ax determined for the duration of starting.
  • the maximum value T Dm ax can be determined by tests of the starting time of the thermal engine MT concerned.
  • a pack of supercapacitor 12 in working order that is to say, having not reached its end of life, allows an effective start of the thermal engine MT after a time less than the maximum value T Dm ax-
  • the step E7 is carried out and consists in signaling to the user of the vehicle, by means of the signal FV, that it is necessary to change the pack of supercapacitor 12.
  • the method according to the invention comprises steps E11 to E15, E16A, E16B and E17 shown in FIG.
  • Step E11 detects a start order of the heat engine MT from the signal OD which is supplied to the microcontroller 14 and module 141 by the engine control unit.
  • the time t 0 is the starting point for a measurement of the start time T D u of the thermal engine MT and a measurement of the voltage drop DV Uc ap across the supercapacitor pack 12.
  • Step E13 detects an effective start of the thermal engine MT from the signal DD which is supplied to the microcontroller 14 and module 141 by the engine control unit.
  • the measurement T D u of the start time is compared with the step
  • the measurement DV Uc ap of the voltage drop at the terminals of the supercapacitor pack 12 is compared with the step E16B at a maximum value DV max determined for the voltage drop across the pack of supercapacitor 12.
  • step E17 is carried out and consists in signaling to the user of the vehicle, using the FV signal, it is necessary to change the supercapacitor pack 12.
  • the maximum value T ' Dm ax of the starting time is related to the particular application and can be determined by tests of the starting time of the thermal engine MT concerned.
  • a supercapacitor pack 12 in working order is dimensioned such as to allow a start of the thermal engine MT in a time less than the maximum value T ' Dm ax-
  • the determination of the maximum value DV max of voltage drop across the supercapacitor pack 12 is related to the particular application and may involve testing.
  • the maximum value DV max can also be imposed, for example, at 1 volt so as to avoid excessive fluctuation of this voltage which could be incompatible with certain constraints imposed by the electronic circuits and the consumers.
  • Fig.3b is a curve showing in simplified form the typical evolution of the current delivered by the supercapacitor pack 12 during the start phase of the thermal engine MT.
  • the average intensity of the current quickly reaches a peak value 11 for a duration t1. Then, the intensity of the current stabilizes at a value 12 for a period t2 and returns to zero at the end of this period, that is to say, during the actual start of the thermal engine MT.
  • the values of 11, t1 and 12, t2 are respectively of the order of 1000 A, 50 ms and 600 A, 450 ms, for a passenger vehicle of average power. Which gives a start time T D u of the order of 500 ms at the most. Beyond this period of 500 ms, the feeling of the user of the vehicle is negative.
  • the capacitance C must be at least 320 Farads so as to ensure a start according to the curve of Fig.3b and having a duration T D u of the order of 500 ms.

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Abstract

The method of the invention is used for detecting the end of life of a supercapacitor pack (12) from measurements (tD, tO, V1, V2) made during the starting phase of a heat engine (MT) of the automobile. According to a first embodiment, the method comprises the step (E5) of calculating a starting duration (TDU) of the heat engine (MT), and the step (E6) of comparing the calculated starting duration (TDU) with a predetermined maximum starting duration (TDmax). The end of life (FV) of the supercapacitor pack (12) is detected when the calculated starting duration (TDU) is higher than the predetermined maximum starting duration (TDmax). According to another embodiment, the voltage drop (DVUcap) at the terminals of the supercapacitor pack (12) is taken into account for detecting the end of life (FV) of the pack.

Description

PROCEDE ET DISPOSITIF DE DETECTION DE LA FIN DE VIE D'UN METHOD AND DEVICE FOR DETECTING THE END OF LIFE OF A
PACK DE SUPERCONDENSATEUR DANS UN SYSTEME ELECTRIQUE DE VEHICULE AUTOMOBILESUPERCONDENSER PACK IN AN ELECTRIC MOTOR VEHICLE SYSTEM
DOMAINE TECHNIQUE DE L'INVENTIONTECHNICAL FIELD OF THE INVENTION
La présente invention est applicable de manière générale dans le domaine automobile.The present invention is generally applicable in the automotive field.
Plus particulièrement, l'invention concerne un procédé de détection de la fin de vie d'un pack de supercondensateur dans un système électrique de véhicule automobile.More particularly, the invention relates to a method for detecting the end of life of a supercapacitor pack in a motor vehicle electrical system.
Un pack de supercondensateur est généralement formé d'une pluralité de condensateurs de très grande capacité appelés «supercondensateur», «ultra-capacité» ou «UCAP» par l'homme du métier. On notera ici que l'invention concerne aussi un pack de supercondensateur comportant un seul supercondensateur. ARRIERE-PLAN TECHNOLOGIQUE DE L'INVENTIONA supercapacitor pack is generally formed of a plurality of capacitors of very large capacity called "supercapacitor", "ultra-capacitor" or "UCAP" by the skilled person. It will be noted here that the invention also relates to a supercapacitor pack comprising a single supercapacitor. BACKGROUND OF THE INVENTION
Pour réduire la consommation de carburant des véhicules automobiles, et par voie de conséquence la pollution qu'ils génèrent, il est aujourd'hui connu d'équiper les véhicules automobiles de systèmes micro-hybrides, par exemple à alterno-démarreur, qui autorisent un mode de freinage récupératif. L'énergie récupérée et stockée dans le pack peut ensuite être utilisée de différentes manières. Par exemple, cette énergie peut être utilisée pour alimenter des consommateurs électriques supportant une tension flottante supérieure à une tension de batterie du réseau d'alimentation électrique du véhicule. Ou encore, cette énergie peut être utilisée pour faciliter le démarrage d'un moteur thermique du véhicule en alimentant la machine électrique de démarrage avec une tension supérieure à la tension de batterie du réseau d'alimentation électrique du véhicule.To reduce the fuel consumption of motor vehicles, and consequently the pollution they generate, it is today known to equip motor vehicles with micro-hybrid systems, for example with alternator-starters, which allow recuperative braking mode. The energy recovered and stored in the pack can then be used in different ways. For example, this energy can be used to power electrical consumers supporting a floating voltage higher than a battery voltage of the vehicle power supply network. Or, this energy can be used to facilitate starting a vehicle engine by supplying the electric starting machine with a voltage higher than the battery voltage of the vehicle power supply network.
Il est également connu un dispositif dit de maintien de tension équipé de supercondensateurs et qui opère de façon à maintenir, pendant la phase de démarrage du moteur thermique du véhicule, une tension électrique quasi-constante pour le réseau d'alimentation d'électrique du véhicule, évitant ainsi une éventuelle perturbation du fonctionnement des consommateurs électriques.It is also known a so-called voltage maintaining device equipped with supercapacitors and which operates in such a way as to maintain, during the starting phase of the engine of the vehicle, a quasi-constant electrical voltage for the vehicle's electrical supply network. , thus avoiding a possible disruption of the operation of the electrical consumers.
Il existe dans ces techniques un besoin de connaître l'état des supercondensateurs et, plus précisément, le besoin de détecter la fin de vie de ces éléments de manière à pouvoir procéder à leur remplacement. DESCRIPTION GENERALE DE L'INVENTIONThere exists in these techniques a need to know the state of the supercapacitors and, more specifically, the need to detect the end of life of these elements so as to be able to replace them. GENERAL DESCRIPTION OF THE INVENTION
Selon un premier aspect, la présente invention a pour objet de fournir un procédé de détection de la fin de vie d'un pack de supercondensateur intégré dans un système électrique d'un véhicule automobile équipé d'un moteur thermique. Conformément au procédé selon l'invention, la fin de vie du pack de supercondensateur est détectée à partir de mesures effectuées pendant une phase de démarrage du moteur thermique.According to a first aspect, the present invention aims to provide a method for detecting the end of life of a supercapacitor pack integrated in an electrical system of a motor vehicle equipped with a heat engine. According to the method according to the invention, the end of life of the supercapacitor pack is detected from measurements made during a starting phase of the engine.
Selon un premier mode de réalisation, le procédé comprend : - une étape de calcul d'une durée de démarrage du moteur thermique, etAccording to a first embodiment, the method comprises: a step of calculating a starting time of the heat engine, and
- une étape de comparaison de la durée de démarrage calculée à une durée de démarrage maximum prédéterminée, la fin de vie du pack de supercondensateur étant détectée lorsque la durée de démarrage calculée est supérieure à la durée de démarrage maximum prédéterminée.a step of comparing the calculated start time to a predetermined maximum start time, the end of life of the supercapacitor pack being detected when the calculated start time is greater than the predetermined maximum start time.
Selon une caractéristique particulière, la durée de démarrage maximum prédéterminée est de l'ordre de 500 ms.According to one particular characteristic, the predetermined maximum starting time is of the order of 500 ms.
Selon un second mode de réalisation, le procédé comprend : - une étape de calcul d'une chute de tension aux bornes du pack de supercondensateur pendant la phase de démarrage du moteur thermique, etAccording to a second embodiment, the method comprises: a step of calculating a voltage drop across the supercapacitor pack during the starting phase of the heat engine, and
- une étape de comparaison de la chute de tension calculée à une chute de tension maximum prédéterminée, la fin de vie du pack de supercondensateur étant détectée lorsque la chute de tension calculée est supérieure à la chute de tension maximum prédéterminée. Selon une caractéristique particulière, la chute de tension maximum prédéterminée est de l'ordre de 1 Volt.a step of comparing the calculated voltage drop with a predetermined maximum voltage drop, the end of life of the supercapacitor pack being detected when the calculated voltage drop is greater than the predetermined maximum voltage drop. According to a particular characteristic, the predetermined maximum voltage drop is of the order of 1 volt.
Selon d'autres aspects, l'invention concerne également un système électrique de véhicule automobile, notamment à freinage récupératif, et un véhicule automobile équipé d'un tel système.According to other aspects, the invention also relates to an electrical system of a motor vehicle, in particular with regenerative braking, and a motor vehicle equipped with such a system.
D'autres avantages et caractéristiques de la présente invention apparaîtront plus clairement à la lecture de la description ci-dessous de plusieurs formes de réalisation particulières en référence aux dessins annexés, dans lesquels : BREVE DESCRIPTION DES DESSINSOther advantages and features of the present invention will appear more clearly on reading the following description of several particular embodiments with reference to the accompanying drawings, in which: BRIEF DESCRIPTION OF THE DRAWINGS
- la Fig.1 est un bloc-diagramme général d'une forme de réalisation particulière d'un système micro-hybride à freinage récupératif avec pack de supercondensateur dans lequel est mis en œuvre le procédé selon l'invention; - la Figs.2a est relative à un premier mode de réalisation du procédé selon l'invention ;FIG. 1 is a block diagram of a particular embodiment of a micro-hybrid regenerative braking system with a supercapacitor pack in which the method according to the invention is implemented; - Figs.2a relates to a first embodiment of the method according to the invention;
- la Figs.2b définit des temps intervenant pendant un démarrage du moteur thermique, pour le premier et un second mode de réalisation du procédé selon l'invention ; et - les Figs.3a et 3b sont relatives à un second mode de réalisation du procédé selon l'invention. DESCRIPTION DE MODES DE REALISATION PARTICULIERS DE L'INVENTION- Figs.2b defines times occurring during a start of the engine, for the first and a second embodiment of the method according to the invention; and FIGS. 3a and 3b relate to a second embodiment of the method according to the invention. DESCRIPTION OF PARTICULAR EMBODIMENTS OF THE INVENTION
En référence à la Fig.1 , il est maintenant décrit une forme de réalisation particulière 1 d'un système micro-hybride à freinage récupératif dans lequel est mis en œuvre le procédé selon l'invention.Referring to Fig.1, there is now described a particular embodiment 1 of a micro-hybrid regenerative braking system in which is implemented the method according to the invention.
Comme montré à la Fig.1 , dans cette forme de réalisation particulière, le système micro-hybride 1 comprend essentiellement une machine électrique tournante 10, un convertisseur alternatif-continu (AC/DC) réversible 11 , une unité capacitive de stockage d'énergie électrique sous la forme d'un pack de supercondensateur 12, un convertisseur de tension continu-continu (DC/DC) 13 et un microcontrôleur 14.As shown in FIG. 1, in this particular embodiment, the micro-hybrid system 1 essentially comprises a rotating electrical machine 10, a reversible AC / DC converter 11, a capacitive energy storage unit in the form of a supercapacitor pack 12, a DC-DC voltage converter 13 and a microcontroller 14.
Le système micro-hybride 1 est relié à un réseau de bord bi- tension du véhicule automobile capable de fournir une tension continue basse Vb et une tension continue haute flottante Vb+X.The micro-hybrid system 1 is connected to a bi-voltage edge network of the motor vehicle capable of providing a low DC voltage Vb and a high floating DC voltage Vb + X.
La tension continue basse Vb est généralement celle de 12 V d'une batterie au plomb 2 équipant le véhicule automobile. De préférence, la tension Vb pourra être utilisée pour alimenter dans le véhicule automobile des consommateurs demandant une valeur de tension relativement stable, tels que les dispositifs d'éclairage et de signalisation. Dans cette forme de réalisation particulière, la tension continueThe low DC voltage Vb is generally that of 12 V of a lead-acid battery 2 equipping the motor vehicle. Preferably, the voltage Vb may be used to supply the motor vehicle consumers requiring a relatively stable voltage value, such as lighting and signaling devices. In this particular embodiment, the DC voltage
Vb+X varie par exemple entre 12 et 60 V et est disponible aux bornes du pack de supercondensateur 12 dont la charge en tension est dépendante notamment du fonctionnement en freinage récupératif de la machine électrique tournante 10.Vb + X varies for example between 12 and 60 V and is available at the terminals of the supercapacitor pack 12 whose voltage load is dependent in particular on the regenerative braking operation of the rotating electrical machine 10.
La tension Vb+X peut être utilisée prioritairement pour alimenter des consommateurs acceptant une tension variable tels que par exemple un dispositif de dégivrage. Cependant, dans certaines applications, la tension Vb+X pourra aussi être utilisée pour alimenter, à travers un convertisseur DC-DC dédié (non représenté), un consommateur demandant une tension continue stable, par exemple un dispositif autoradio alimenté sous 12 V. De plus, la tension Vb+X dans certaines applications est aussi utilisable pour alimenter avec une tension supérieure à 12 V la machine électrique tournante 10 fonctionnant en mode moteur/démarreur.The voltage Vb + X can be used primarily to supply consumers accepting a variable voltage such as for example a defrosting device. However, in some applications, the voltage Vb + X may also be used to supply, via a dedicated DC-DC converter (not shown), a consumer requesting a stable DC voltage, for example a car radio device powered at 12 V. moreover, the voltage Vb + X in certain applications is also usable for supplying with a voltage greater than 12 V the rotary electrical machine 10 operating in motor / starter mode.
Comme cela est représenté à la Fig.1 , la machine électrique tournante 10 est couplée mécaniquement, liaison 101 , à un moteur thermique MT du véhicule automobile. La machine 10 est ici une machine triphasée de type alterno-démarreur qui, outre les modes de fonctionnement en démarreur et alternateur, est apte à fonctionner également en mode de freinage récupératif et en mode d'assistance en couple. Dans le mode d'assistance en couple, la machine 10 fournit un couple mécanique additionnel pour la traction du véhicule automobile en complément de celui fourni par le moteur thermique MT.As shown in FIG. 1, the rotary electrical machine 10 is mechanically coupled, link 101, to a thermal engine MT of the motor vehicle. The machine 10 is here a three-phase alternator-starter type machine which, in addition to operating modes starter and alternator, is able to operate also in regenerative braking mode and torque assist mode. In the torque assistance mode, the machine 10 provides a additional mechanical torque for the traction of the motor vehicle in addition to that provided by the heat engine MT.
Le convertisseur AC/DC 11 est un dispositif réversible et permet, lorsque la machine électrique tournante 10 doit fonctionner en mode moteur/démarreur, une alimentation de la machine 10 avec des tensions alternées triphasées obtenues à partir d'une tension continue présente aux bornes du pack de supercondensateur 12, et, lorsque la machine électrique tournante 10 doit fonctionner en mode alternateur, un redressement sous la forme d'une tension continue redressée des tensions triphasées fournies par la machine 10. Cette tension continue redressée charge le pack de supercondensateur 12 et, à travers le convertisseur DC-DC 13, la batterie 2.The AC / DC converter 11 is a reversible device and allows, when the rotary electrical machine 10 is to operate in motor / starter mode, a supply of the machine 10 with three-phase alternating voltages obtained from a DC voltage across the terminals of the supercapacitor pack 12, and when the rotating electrical machine 10 is to operate in alternator mode, a rectification in the form of a rectified DC voltage of the three-phase voltages supplied by the machine 10. This rectified DC voltage charges the supercapacitor pack 12 and , through the DC-DC converter 13, the battery 2.
Le pack de supercondensateur 12 est ici formé essentiellement d'un pack de supercondensateur équipé de circuits électroniques appropriés.The supercapacitor pack 12 is here essentially formed of a pack of supercapacitors equipped with appropriate electronic circuits.
Le pack de supercondensateur 12 autorise, en se chargeant à la tension continue délivrée par le convertisseur AC/DC 11 , un stockage d'énergie électrique lorsque la machine électrique tournante 10 fonctionne en mode de freinage récupératif ou en mode alternateur. L'énergie stockée dans le pack de supercondensateur 12 peut être restituée sur le réseau de tension Vb+X pour alimenter différents consommateurs et, dans certains cas, sur le réseau de tension Vb, à travers le convertisseur DC/DC 13, par exemple lorsque la machine 10 ne débite pas et que la batterie 2 est incapable de répondre à une sollicitation de pic de courant sur le réseau de tension Vb. De plus, l'énergie stockée dans le pack de supercondensateur 12, comme indiqué plus haut, peut être utilisée pour un démarrage du moteur thermique ou une assistance en couple de celui-ci sous une tension Vb+X qui peut être très sensiblement supérieure aux 12 V classiques, facilitant ainsi une fourniture par la machine tournante 10 de couples mécaniques importants requis dans le cas de gros moteurs thermiques.The supercapacitor pack 12 allows, by charging the DC voltage delivered by the AC / DC converter 11, a storage of electrical energy when the rotating electrical machine 10 operates in regenerative braking mode or alternator mode. The energy stored in the supercapacitor pack 12 can be restored on the voltage network Vb + X to supply different consumers and, in some cases, on the voltage network Vb, through the DC / DC converter 13, for example when the machine 10 does not charge and that the battery 2 is unable to respond to a bias current peak on the voltage network Vb. In addition, the energy stored in the supercapacitor pack 12, as indicated above, can be used for a starting of the heat engine or a torque assistance thereof at a voltage Vb + X which can be very substantially greater than 12 V conventional, facilitating a supply by the rotary machine 10 large mechanical torques required in the case of large heat engines.
Conformément à l'invention, le pack de supercondensateur 12 comporte un circuit électronique de mesure de tension 121. Ce circuit électronique de mesure de tension délivre une mesure Vcap de la tension aux bornes du pack de supercondensateur 12. Cette mesure Vcap est fournie au microcontrôleur 14 afin d'être exploitée par le procédé selon l'invention. Le convertisseur DC/DC 13 est un dispositif réversible et permet, d'une part, un transfert d'énergie vers le réseau de tension Vb pour alimenter les consommateurs et charger la batterie 2 et, d'autre part, un transfert d'énergie dans le sens inverse à partir de la tension 12V de la batterie 2 pour charger le pack de supercondensateur 12 si nécessaire et alimenter le convertisseur AC/DC 11 lorsque la machine tournante 10 fonctionne en moteur / démarreur.According to the invention, the supercapacitor pack 12 comprises an electronic voltage measuring circuit 121. This electronic voltage measuring circuit delivers a measurement Vcap of the voltage across the supercapacitor pack 12. This Vcap measurement is supplied to the microcontroller 14 in order to be exploited by the method according to the invention. The DC / DC converter 13 is a reversible device and allows, on the one hand, a transfer of energy to the voltage network Vb to supply the consumers and charge the battery 2 and, on the other hand, a transfer of energy in the opposite direction from the voltage 12V of the battery 2 to charge the supercapacitor pack 12 if necessary and supply the AC / DC converter 11 when the rotating machine 10 operates as a motor / starter.
Le microcontrôleur 14 gère le fonctionnement du système microhybride 1 à partir d'informations représentatives de l'état interne du système micro-hybride 1 et de l'état du véhicule automobile. De manière générale, un module de stratégies de pilotage (non représenté) est implémenté dans le microcontrôleur 14 de manière à piloter le système micro-hybride 1. Des informations d'état et des commandes peuvent être échangées entre le microcontrôleur 14 et différents éléments fonctionnels du système micro-hybride 1 à travers des liaisons d'échange de signaux. Des liaisons d'échange de signaux L1 , L2, L3 et L4 entre le microcontrôleur 14 et les éléments 10, 11 , 12 et 13 sont représentées à la Fig.1.The microcontroller 14 manages the operation of the microhybrid system 1 from information representative of the internal state of the micro-hybrid system 1 and the state of the motor vehicle. In general, a control strategy module (not shown) is implemented in the microcontroller 14 so as to drive the micro-hybrid system 1. Status information and commands can be exchanged between the microcontroller 14 and various functional elements of the micro-hybrid system 1 through signal exchange links. Signal exchange links L1, L2, L3 and L4 between microcontroller 14 and elements 10, 11, 12 and 13 are shown in FIG.
Comme montré aussi à la Fig.1 , un bus de communication de données 3, par exemple de type CAN, est prévu pour des échanges d'information entre le système micro-hybride 1 et une ou plusieurs unités électroniques de commande (ECU) 4 du véhicule automobile, telle que l'unité de commande moteur. Des informations telles qu'un appui sur la pédale de frein ou sur la pédale d'accélérateur, ou bien le démarrage effectif du moteur thermique MT, peuvent ainsi être transmises au système micro-hybride 1 par une unité ECU 4 à travers le bus de communication de données 3. Comme montré également à la Fig.1 , dans le microcontrôleur 14, il est également implémenté un module 141 dont la fonction, conformément à l'invention, est de détecter la fin de vie du pack de supercondensateur 12. Ce module 141 de détection de fin de vie du pack de supercondensateur 12 reçoit en entrée la mesure de tension Vcap effectuée aux bornes du pack de supercondensateur 12, et des signaux OD et DD qui sont délivrés, dans cette forme de réalisation, par l'unité de contrôle moteur (non représentée) du véhicule et qui indiquent respectivement un ordre de démarrage du moteur thermique MT et un démarrage effectif de celui-ci.As also shown in FIG. 1, a data communication bus 3, for example of the CAN type, is provided for information exchanges between the micro-hybrid system 1 and one or more electronic control units (ECU). of the motor vehicle, such as the engine control unit. Information such as pressing the brake pedal or the accelerator pedal, or the actual start of the heat engine MT, can thus be transmitted to the micro-hybrid system 1 by an ECU unit 4 through the bus. 3. As also shown in FIG. 1, in the microcontroller 14, there is also implemented a module 141 whose function, according to the invention, is to detect the end of life of the supercapacitor pack 12. This end-of-life detection module 141 of the supercapacitor pack 12 receives as input the voltage measurement Vcap made at the terminals of the supercapacitor pack 12, and the signals OD and DD which are delivered, in this embodiment, by the motor control unit (not shown) of the vehicle and which respectively indicate a start order of the thermal engine MT and an actual start thereof.
Dans cette forme de réalisation particulière, la mesure de tension Vcap est convoyée jusqu'aux microcontrôleur 14 et module 141 à travers la liaison d'échange de signaux L3 et les signaux OD et DD sont convoyés jusqu'aux microcontrôleur 14 et module 141 à travers le bus de communication de données 3, l'unité de contrôle moteur étant connectée à ce même bus 3.In this particular embodiment, the voltage measurement Vcap is conveyed to the microcontroller 14 and module 141 through the signal exchange link L3 and the signals OD and DD are conveyed to the microcontroller 14 and module 141 through the data communication bus 3, the engine control unit being connected to the same bus 3.
Comme montré à la Fig.1 , un signal FV indiquant la détection de la fin de vie du pack de supercondensateur 12 est délivré en sortie par le module 141. L'information de fin de vie du pack de supercondensateurAs shown in FIG. 1, an FV signal indicating the detection of the end of life of the supercapacitor pack 12 is output by the module 141. The end-of-life information of the supercapacitor pack
12 qui est donnée par le signal FV est portée à la connaissance de l'utilisateur du véhicule (par exemple, à travers une indication correspondante ou autres s'affichant sur le tableau de bord) de façon à ce que l'utilisateur puisse faire procéder au remplacement du pack 12.12 which is given by the signal FV is brought to the attention of the user of the vehicle (for example, through a corresponding indication or others displayed on the dashboard) so that the user can make proceed replacing the 12 pack.
En référence aux Figs.2a et 2b, il est maintenant décrit un premier mode de réalisation du procédé selon l'invention. Selon ce premier mode de réalisation, le procédé selon l'invention comprend des étapes E1 à E7 montrées à la Fig.2a.Referring to Figs.2a and 2b, there is now described a first embodiment of the method according to the invention. According to this first embodiment, the method according to the invention comprises steps E1 to E7 shown in FIG.
L'étape E1 détecte un ordre de démarrage du moteur thermique MT à partir du signal OD qui est fourni aux microcontrôleur 14 et module 141 par l'unité de contrôle moteur.Step E1 detects a start order of the thermal engine MT from the signal OD which is supplied to the microcontroller 14 and module 141 by the engine control unit.
A l'étape E2, comme montré à la Fig.2b, un temps t0 est lu et est associé à la détection de l'ordre de démarrage OD. Le temps t0 est le point de départ d'une mesure de temps de démarrage TDu du moteur thermique MT. L'étape E3 détecte un démarrage effectif du moteur thermiqueIn step E2, as shown in Fig.2b, a time t 0 is read and is associated with the detection of the start order OD. The time t 0 is the starting point of a start time measurement T D u of the thermal engine MT. Step E3 detects an effective start of the engine
MT à partir du signal DD qui est fourni aux microcontrôleur 14 et module 141 par l'unité de contrôle moteur.MT from the DD signal that is supplied to the microcontroller 14 and module 141 by the engine control unit.
A l'étape E4, comme montré à la Fig.2b, un temps tD est lu et est associé à la détection DD du démarrage du moteur thermique MT. Le temps tD correspond à la fin de la mesure de durée de démarrage TDu du moteur thermique MT.In step E4, as shown in FIG. 2b, a time t D is read and is associated with the detection DD of the start of the thermal engine MT. The time t D corresponds to the end of the measurement of the start time T D u of the thermal engine MT.
L'étape E5 correspond au calcul de la durée de démarrage par l'opération de soustraction : TDu = tD - 10.Step E5 corresponds to calculating the start time by the subtraction operation: T D u = t D - 1 0 .
La mesure TDu de la durée de démarrage est comparée à l'étape E6 à une valeur maximum TDmax déterminée pour la durée de démarrage.The measurement T D u of the starting time is compared with the step E6 to a maximum value T Dm ax determined for the duration of starting.
La valeur maximum TDmax peut être déterminée par des essais de durée de démarrage du moteur thermique MT concerné. Un pack de supercondensateur 12 en état de marche, c'est-à-dire, n'ayant pas atteint sa fin de vie, autorise un démarrage effectif du moteur thermique MT au bout d'un temps inférieur à la valeur maximum TDmax-The maximum value T Dm ax can be determined by tests of the starting time of the thermal engine MT concerned. A pack of supercapacitor 12 in working order, that is to say, having not reached its end of life, allows an effective start of the thermal engine MT after a time less than the maximum value T Dm ax-
Comme montré à la Fig.2a, lorsque TDu > TDmax, l'étape E7 est effectuée et consiste à signaler à l'utilisateur du véhicule, au moyen du signal FV, qu'il est nécessaire de changer le pack de supercondensateur 12.As shown in FIG. 2a, when T D u> T Dm ax, the step E7 is carried out and consists in signaling to the user of the vehicle, by means of the signal FV, that it is necessary to change the pack of supercapacitor 12.
En référence aux Figs.3a, 2b et 3b, il est maintenant décrit un second mode de réalisation du procédé selon l'invention. Selon ce second mode de réalisation, le procédé selon l'invention comprend des étapes E11 à E15, E16A, E16B et E17 montrées à la Fig.3a.With reference to FIGS. 3a, 2b and 3b, a second embodiment of the method according to the invention is now described. According to this second embodiment, the method according to the invention comprises steps E11 to E15, E16A, E16B and E17 shown in FIG.
L'étape E11 détecte un ordre de démarrage du moteur thermique MT à partir du signal OD qui est fourni aux microcontrôleur 14 et module 141 par l'unité de contrôle moteur.Step E11 detects a start order of the heat engine MT from the signal OD which is supplied to the microcontroller 14 and module 141 by the engine control unit.
A l'étape E12, comme montré aux Figs.3a et 2b, un temps t0 associé à la détection de l'ordre de démarrage OD et la tension V1 =VucaP, présente aux bornes du pack de supercondensateur 12 sont lus et mémorisés par le module 141 à cet instant t0. Le temps t0 est le point de départ d'une mesure de durée de démarrage TDu du moteur thermique MT et d'une mesure de chute de tension DVUcap aux bornes du pack de supercondensateur 12. L'étape E13 détecte un démarrage effectif du moteur thermique MT à partir du signal DD qui est fourni aux microcontrôleur 14 et module 141 par l'unité de contrôle moteur.In step E12, as shown in FIGS. 3a and 2b, a time t 0 associated with the detection of the start command OD and the voltage V1 = Vuca P present at the terminals of the supercapacitor pack 12 are read and stored. by the module 141 at this instant t 0 . The time t 0 is the starting point for a measurement of the start time T D u of the thermal engine MT and a measurement of the voltage drop DV Uc ap across the supercapacitor pack 12. Step E13 detects an effective start of the thermal engine MT from the signal DD which is supplied to the microcontroller 14 and module 141 by the engine control unit.
A l'étape E14, comme montré aux Figs.3a et 2b, un temps tD associé à la détection du démarrage DD du moteur thermique MT et la tension V2= VUcap présente aux bornes du pack de supercondensateur 12 sont lus et mémorisés par le module 141 à cet instant tD.In step E14, as shown in FIGS. 3a and 2b, a time t D associated with the detection of the start-up DD of the heat engine MT and the voltage V2 = V Uc ap present across the supercapacitor pack 12 are read and stored. by the module 141 at this instant t D.
L'étape E15 correspond au calcul de la durée de démarrage TDu = tD - 10 et au calcul de la chute de tension DVUcaP = V1 - V2. La mesure TDu de la durée de démarrage est comparée à l'étapeStep E15 corresponds to the calculation of the start time T D u = t D - 1 0 and the calculation of the voltage drop DV Uc to P = V1 - V2. The measurement T D u of the start time is compared with the step
E16A à une valeur maximum T'Dmax déterminée pour la durée de démarrage.E16A at a maximum value T ' Dm ax determined for the start time.
Parallèlement, la mesure DVUcap de la chute de tension aux bornes du pack de supercondensateur 12 est comparée à l'étape E16B à une valeur maximum DVmax déterminée pour la chute de tension aux bornes du pack de supercondensateur 12.At the same time, the measurement DV Uc ap of the voltage drop at the terminals of the supercapacitor pack 12 is compared with the step E16B at a maximum value DV max determined for the voltage drop across the pack of supercapacitor 12.
Comme montré à la Fig.3a, lorsque TDu > T'Dmax (étape E16A) et/ou DVucap > DVmax (étape E16B), l'étape E17 est effectuée et consiste à signaler à l'utilisateur du véhicule, au moyen du signal FV, qu'il est nécessaire de changer le pack de supercondensateur 12.As shown in FIG. 3a, when T D u> T ' Dm ax (step E16A) and / or DVucap> DV max (step E16B), step E17 is carried out and consists in signaling to the user of the vehicle, using the FV signal, it is necessary to change the supercapacitor pack 12.
Comme dans le cas du premier mode de réalisation décrit ci- dessus du procédé selon l'invention, la valeur maximum T'Dmax de la durée de démarrage est liée à l'application particulière et peut être déterminée par des essais de durée de démarrage du moteur thermique MT concerné. Un pack de supercondensateur 12 en état de marche, c'est-à-dire, n'ayant pas atteint sa fin de vie, est dimensionné de telle manière à permettre un démarrage du moteur thermique MT en un temps inférieur à la valeur maximum T'Dmax-As in the case of the first embodiment described above of the method according to the invention, the maximum value T ' Dm ax of the starting time is related to the particular application and can be determined by tests of the starting time of the thermal engine MT concerned. A supercapacitor pack 12 in working order, that is to say, having not reached its end of life, is dimensioned such as to allow a start of the thermal engine MT in a time less than the maximum value T ' Dm ax-
La détermination de la valeur maximum DVmax de chute de tension aux bornes du pack de supercondensateur 12 est liée à l'application particulière et peut faire appel à des essais. La valeur maximum DVmax peut aussi être imposée, par exemple, à 1 Volt de manière à éviter une trop grande fluctuation de cette tension qui pourrait être incompatible avec certaines contraintes imposées par les circuits électroniques et les consommateurs.The determination of the maximum value DV max of voltage drop across the supercapacitor pack 12 is related to the particular application and may involve testing. The maximum value DV max can also be imposed, for example, at 1 volt so as to avoid excessive fluctuation of this voltage which could be incompatible with certain constraints imposed by the electronic circuits and the consumers.
La Fig.3b est une courbe montrant sous forme simplifiée l'évolution typique du courant délivré par le pack de supercondensateur 12 pendant la phase de démarrage du moteur thermique MT. Comme montré à la Fig.3b, au début du démarrage, l'intensité moyenne du courant atteint rapidement une valeur de pic 11 pendant une durée t1. Ensuite, l'intensité du courant se stabilise à une valeur 12 pendant une durée t2 et revient à zéro au terme de cette durée, c'est-à-dire, lors du démarrage effectif du moteur thermique MT.Fig.3b is a curve showing in simplified form the typical evolution of the current delivered by the supercapacitor pack 12 during the start phase of the thermal engine MT. As shown in Fig.3b, at the start of the start, the average intensity of the current quickly reaches a peak value 11 for a duration t1. Then, the intensity of the current stabilizes at a value 12 for a period t2 and returns to zero at the end of this period, that is to say, during the actual start of the thermal engine MT.
Les valeurs de 11 , t1 et 12, t2 sont respectivement de l'ordre de 1000 A, 50 ms et 600 A, 450 ms, pour un véhicule de tourisme de puissance moyenne. Ce qui donne une durée de démarrage TDu de l'ordre de 500 ms au plus. Au-delà de cette durée de 500 ms, le ressenti du l'utilisateur du véhicule est négatif.The values of 11, t1 and 12, t2 are respectively of the order of 1000 A, 50 ms and 600 A, 450 ms, for a passenger vehicle of average power. Which gives a start time T D u of the order of 500 ms at the most. Beyond this period of 500 ms, the feeling of the user of the vehicle is negative.
La chute de tension DVUcap aux bornes du pack de supercondensateur 12 est donnée par la relation suivante : DVucap = V1 - V2 = (11. t1 + I2.t2)/C, dans laquelle C est la capacité du pack de supercondensateur 12.The voltage drop DV Uc ap across the supercapacitor pack 12 is given by the following relation: DVucap = V1 - V2 = (11.t1 + I2.t2) / C, where C is the capacity of the supercapacitor pack 12 .
Pour une chute de tension maximum DVUcap = 1 Volt aux bornes du pack de condensateur 12, avec les valeurs 11 =1000 A, t1 =50 ms etFor a maximum voltage drop DV Uc ap = 1 Volt across the terminals of the capacitor pack 12, with the values 11 = 1000 A, t1 = 50 ms and
12=600 A, t2=450 ms, la capacité C doit être au moins de 320 Farads de manière à assurer un démarrage conforme à la courbe de la Fig.3b et ayant une durée TDu de l'ordre de 500 ms.12 = 600 A, t2 = 450 ms, the capacitance C must be at least 320 Farads so as to ensure a start according to the curve of Fig.3b and having a duration T D u of the order of 500 ms.
En autorisant sur la durée de vie du pack de supercondensateur 12 une dégradation de 20 % de sa capacité C, dans l'exemple ci-dessus, il faut une capacité nominale de C = 384 Farads pour le pack 12. Tant que la capacité C ne se dégrade pas, en dessous de 320 Farads, la chute de tension DVUcap ne dépassera pas 1 Volt et on considérera que le pack 12 est toujours opérationnel. Lorsque la chute de tension DVUcaP excède 1 Volt, la capacité C est devenue inférieure à 320 Farads et le pack 12 demande alors à être changé. By permitting on the life of the supercapacitor pack 12 a degradation of 20% of its capacitance C, in the example above, a nominal capacity of C = 384 Farads is required for the pack 12. As long as the capacitor C will not degrade, below 320 Farads, the voltage drop DV Uc ap will not exceed 1 Volt and it will be considered that the pack 12 is still operational. When the voltage drop DV Uc a P exceeds 1 Volt, the capacitance C has become less than 320 Farads and the pack 12 then needs to be changed.

Claims

REVENDICATIONS
1. Procédé de détection de la fin de vie d'un pack de supercondensateur (12) intégré dans un système électrique de véhicule automobile (1 ) équipé d'un moteur thermique (MT), caractérisé en ce que ladite fin de vie dudit pack de supercondensateur (12) est détectée à partir de mesures (tD, t0, V1 , V2) effectuées pendant une phase de démarrage dudit moteur thermique (MT).1. A method for detecting the end of life of a supercapacitor pack (12) integrated in a motor vehicle electrical system (1) equipped with a heat engine (MT), characterized in that said end of life of said pack supercapacitor (12) is detected from measurements (t D , t 0 , V1, V2) performed during a starting phase of said heat engine (MT).
2. Procédé selon la revendication 1 , caractérisé en ce qu'il comprend : - une étape (E5 ; E15) de calcul d'une durée de démarrage (TDu) dudit moteur thermique (MT), et2. Method according to claim 1, characterized in that it comprises: a step (E5; E15) for calculating a starting duration (T D u) of said heat engine (MT), and
- une étape (E6 ; E16A) de comparaison de ladite durée de démarrage calculée (TDu) à une durée de démarrage maximum prédéterminée (TDmax ; T'Dmax), ladite fin de vie du pack de supercondensateur (12) étant détectéea step (E6; E16A) of comparing said calculated start time (T D u) with a predetermined maximum starting time (T Dm ax; T ' Dm ax), said end of life of the supercapacitor pack (12) being detected
(FV) lorsque la durée de démarrage calculée (TDu) est supérieure à ladite durée de démarrage maximum prédéterminée (TDmax ; T'Dmax)-(FV) when the calculated start time (T D u) is greater than said predetermined maximum start time (T Dm ax; T ' Dm ax) -
3. Procédé selon la revendication 2, caractérisé en ce que ladite durée de démarrage maximum prédéterminée (TDmax ; T'Dmax) est de l'ordre de 500 ms.3. Method according to claim 2, characterized in that said predetermined maximum starting time (T Dm ax; T ' Dm ax) is of the order of 500 ms.
4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que qu'il comprend : - une étape (E15) de calcul d'une chute de tension (DVUcap) aux bornes dudit pack de supercondensateur (12) pendant ladite phase de démarrage dudit moteur thermique (MT), et4. Method according to any one of claims 1 to 3, characterized in that it comprises: a step (E15) for calculating a voltage drop (DV Uc ap) across said supercapacitor pack (12) during said start-up phase of said heat engine (MT), and
- une étape (E16B) de comparaison de ladite chute de tension calculée (DVUcap) à une chute de tension maximum prédéterminée (DVmax), ladite fin de vie du pack de supercondensateur (12) étant détectée (FV) lorsque ladite chute de tension calculée (DVUcaP) est supérieure à ladite chute de tension maximum prédéterminée (DVmax).a step (E16B) of comparing said calculated voltage drop (DV Uc ap) with a predetermined maximum voltage drop (DV max ), said end of life of the supercapacitor pack (12) being detected (FV) when said drop calculated voltage (DV Uc a P ) is greater than said predetermined maximum voltage drop (DV max ).
5. Procédé selon la revendication 4, caractérisé en ce que ladite chute de tension maximum prédéterminée (DVmax) est de l'ordre de 1 Volt.5. Method according to claim 4, characterized in that said predetermined maximum voltage drop (DV max ) is of the order of 1 volt.
6. Pack de supercondensateur (12) caractérisé en ce qu'il comprend des moyens (121 ) aptes à une mise en œuvre du procédé selon l'une quelconque des revendications 1 à 5.6. supercapacitor pack (12) characterized in that it comprises means (121) adapted to implement the method according to any one of claims 1 to 5.
7. Système électrique de véhicule automobile (1 ), caractérisé en ce qu'il comprend un pack de supercondensateur (12) selon la revendication 6.7. Motor vehicle electrical system (1), characterized in that it comprises a supercapacitor pack (12) according to claim 6.
8. Véhicule automobile, caractérisé en ce qu'il est équipé d'un système (1 ) selon la revendication 7. 8. Motor vehicle, characterized in that it is equipped with a system (1) according to claim 7.
PCT/FR2009/051914 2008-10-21 2009-10-07 Method and device for detecting the end of life of a supercapacitor pack in the electric system of an automobile WO2010046576A2 (en)

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FR0857135 2008-10-21
FR0857135A FR2937424B1 (en) 2008-10-21 2008-10-21 METHOD AND DEVICE FOR DETECTING THE END OF LIFE OF A SUPERCONDENSOR PACK IN AN ELECTRICAL SYSTEM OF A MOTOR VEHICLE

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JP2013177037A (en) * 2012-02-28 2013-09-09 Nabtesco Corp Start controller for hybrid driving mechanism

Citations (3)

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Publication number Priority date Publication date Assignee Title
EP1130737A1 (en) * 2000-03-03 2001-09-05 Renault Autonomous electrical installation, especially for vehicle
US20070024266A1 (en) * 2005-07-27 2007-02-01 Yurgil James R Bi-modal voltage limit control to maximize ultra-capacitor performance
GB2452246A (en) * 2007-07-19 2009-03-04 Ford Global Tech Llc A Micro-Hybrid Motor Vehicle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130737A1 (en) * 2000-03-03 2001-09-05 Renault Autonomous electrical installation, especially for vehicle
US20070024266A1 (en) * 2005-07-27 2007-02-01 Yurgil James R Bi-modal voltage limit control to maximize ultra-capacitor performance
GB2452246A (en) * 2007-07-19 2009-03-04 Ford Global Tech Llc A Micro-Hybrid Motor Vehicle

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