WO2006014016A1 - 確実にモータの駆動が可能なモータ駆動装置 - Google Patents
確実にモータの駆動が可能なモータ駆動装置 Download PDFInfo
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- WO2006014016A1 WO2006014016A1 PCT/JP2005/014616 JP2005014616W WO2006014016A1 WO 2006014016 A1 WO2006014016 A1 WO 2006014016A1 JP 2005014616 W JP2005014616 W JP 2005014616W WO 2006014016 A1 WO2006014016 A1 WO 2006014016A1
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- voltage
- converter
- motor
- power
- battery
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Classifications
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- 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
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- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
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- 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
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- 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
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- 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
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- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
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- 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
- B60L50/61—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
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- 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
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- 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
- B60L2260/00—Operating Modes
- B60L2260/20—Drive modes; Transition between modes
- B60L2260/28—Four wheel or all wheel drive
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- 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
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- 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
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- 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
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- Y02T10/64—Electric machine technologies in electromobility
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- 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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
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- 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
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- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- 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
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- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
Definitions
- the present invention relates to a motor drive device that drives a motor, and more particularly to a motor drive device that can reliably drive a motor even when an auxiliary battery rises.
- a hybrid vehicle is a vehicle that uses a DC power source, an inverter, and a motor driven by the inverter as a power source in addition to a conventional engine.
- a power source is obtained by driving the engine, a DC voltage from a DC power source is converted into an AC voltage by an inverter, and the motor is rotated by the converted AC voltage to obtain a power source. is there.
- An electric vehicle is a vehicle that uses a DC power source, an inverter, and a motor driven by the inverter as a power source.
- FIG. 6 is a schematic block diagram showing an example of a conventional motor drive device.
- the motor drive unit includes main battery MB, system relays SR 1 and 2, boost converter 1 0 1, inverter 1 0 2, DC / DC converter 1 1 0, and auxiliary equipment
- a battery SB and a control device 120 are provided.
- Main battery MB outputs DC voltage.
- system relays SR 1 and SR 2 are turned on by a signal SE from control device 1 2 0, DC voltage from main battery MB is supplied to boost converter 1 0 1 and DCZDC converter 1 1 0.
- Boost converter 101 boosts the DC voltage supplied from main battery MB under the control of control device 120, and supplies the boosted DC voltage to inverter 102.
- inverter 102 converts DC voltage into AC voltage based on the control from control device 120, and drives motor generator MG.
- motor generator MG is driven so as to generate torque specified by torque command value TR.
- Current sensor 104 detects motor current MCRT flowing in each phase of motor generator MG, and outputs the detected motor current MCRT to control device 120.
- the DC / DC converter 1 10 steps down the DC voltage supplied from the main battery MB via the system relays SR 1 and SR 2 in accordance with a control signal from 120 control devices, and the reduced DC voltage. Is supplied to the auxiliary battery SB.
- the auxiliary battery SB accumulates the supplied DC voltage and outputs a DC voltage for driving an auxiliary electric device (not shown).
- control device 120 Based on the DC voltage of main battery MB and motor current MCRT from current sensor 104, control device 120 generates signals PWC and PWM for controlling boost converter 101 and inverter 102. Signals PWC and PWM are output to boost converter 101 and inverter 102, respectively. Also, the control device 120 generates a control signal for controlling the DC / DC converter 110 and outputs it to the DCZDC converter 110.
- the motor drive device mounted on the hybrid vehicle or the electric vehicle boosts the DC voltage from the main battery MB to drive the motor generator MG so as to generate a predetermined torque, and also to drive the main battery MB.
- the auxiliary battery SB is charged by stepping down the DC voltage.
- the lighting apparatus is included in the auxiliary equipment electrical components which drive by receiving electric power supply from auxiliary battery SB Air conditioner, power window, audio, etc. are included.
- the power stored in the main battery MB is used for starting the engine. Specifically, electric power is supplied from a main battery MB to a motor generator MG connected to an engine (not shown), and the engine is started by driving the motor generator MG as a motor.
- a configuration is also disclosed in which a starter motor is driven using an auxiliary battery when the engine is started (for example, Japanese Patent Application Laid-Open No. 1-11 3 3 2 0 1 2, Japanese Patent Laid-Open No. 10-75550 and Japanese Patent Laid-Open No. 8-93 5 17).
- FIG. 7 is a schematic block diagram showing another example of a conventional motor driving device described in Japanese Patent Laid-Open No. 11-3 3 2 0 12.
- engine 2 1 0 is connected to front wheel 2 1 6 via transmission 2 1 2 and axle 2 1 4.
- the front wheel 2 1 6 is driven by the output of the engine 2 10.
- the engine 2 10 is driven by a starter motor 2 30, and the starter motor 2 3 0 is driven by electric power of the catcher battery 2 2 0.
- the catcher battery 2 2 0 is charged by the power generated by the alternator 2 1 9 driven by the output of the engine 2 1 0.
- auxiliary battery 2 20 is boosted by DC / DC converter 2 3 2, and the boosted power is stored in capacitor (or capacitor) 2 2 4. Electric power is supplied from the capacitor 2 2 4 to the left and right wheel motors 2 2 6 through the inverter 2 3 4. As a result, the rear wheel 2 2 8 is driven.
- connection switching device 2 3 8 for selectively connecting the starter motor 2 3 0 and any one of the auxiliary battery 2 2 0 and the capacitor 2 2 4 is provided.
- the power supply system that applies power to the starter motor 2 3 0 can be switched between the catcher battery 2 2 0 and the capacitor 2 2 4, and the engine startability can be reliably performed.
- the engine is started by driving the motor generator MG as a motor.
- the control device 1 2 0 for controlling the entire motor drive device uses the auxiliary battery SB as a power source. Therefore, when the auxiliary battery runs out, the system relays SR 1 and SR 2 are not turned on, and the power supply from the main battery MB to the boost converter 100 and DC / DC converter 110 is interrupted. . Therefore, motor generator MG cannot be driven and the engine cannot be started.
- connection switching device 2 3 8 can supply power from the capacitor 2 2 4 to the starter motor 2 3 0.
- the system ECU 2 3 6 itself that controls the connection switching device 2 3 8 becomes inoperable, making it difficult to start the engine.
- the high-voltage main battery MB used for running the vehicle retains the amount of electricity stored to drive the motor generator MG, but the vehicle system There is no way to effectively use this amount of electricity when the system cannot be started.
- Japanese Patent Laid-Open No. 8-9 3 5 1 7 if the engine cannot be started due to a drop in the voltage of the catcher battery, the starter motor, which consumes a relatively large amount of power, is prohibited from re-operation and A means of traveling using the power stored in the battery is disclosed.
- traveling with only a battery for traveling is severely limited, so it is not always guaranteed that the vehicle can travel to a place with charging facilities such as a maintenance shop.
- an object of the present invention is to provide a motor drive device that can easily and reliably drive a motor even when an auxiliary battery runs out. It is. Disclosure of the invention
- the motor drive device includes a first power source, a drive circuit that receives power supplied from the first power source to drive the motor, and a first DC voltage that is lower than the first DC voltage output from the first power source.
- a second power source that is charged by receiving a DC voltage of 2, a voltage converter that converts the first DC voltage to a second DC voltage between the first power source and the second power source, and a first power source
- a converter control circuit that controls the voltage converter in response to power supply.
- the motor driving device is driven by receiving power supplied from the second power source, controls the driving circuit, and inputs a trigger signal for starting the converter control circuit to the converter control circuit.
- the predetermined amount is a supply amount of electric power necessary for driving the drive circuit control circuit.
- the trigger signal generation means includes a third power source that generates the trigger signal and a switch that indicates an input timing of the trigger signal generated by the third power source.
- the first power supply, the second power supply, the voltage converter, the converter control circuit, the drive circuit control circuit, and the trigger signal generation means are housed integrally in a single casing.
- the motor driving device further includes a cooling device for cooling the casing. Therefore, according to the present invention, it is possible to realize a motor drive device that can supply electric power to a motor easily and reliably without requiring a charging facility even when the battery of the auxiliary battery is exhausted.
- FIG. 1 is a control block diagram showing a vehicle equipped with a motor drive device according to an embodiment of the present invention.
- FIG. 2 is a schematic block diagram of the motor drive device according to the embodiment of the present invention.
- FIG. 3 is a circuit diagram of the DC / DC converter in FIG.
- FIG. 4 is a block diagram of the DCZDC converter control circuit in FIG.
- FIG. 5 is a flowchart for illustrating the operation when the auxiliary battery is raised in the motor drive apparatus according to the embodiment of the present invention.
- FIG. 6 is a schematic block diagram showing an example of a conventional motor drive device.
- FIG. 7 is a schematic block diagram showing another example of a conventional motor driving device described in Japanese Patent Laid-Open No. 11-3 3 2 0 12. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a control block diagram showing a vehicle equipped with a motor drive device according to an embodiment of the present invention.
- the vehicle is a hybrid vehicle that uses an engine and a motor as power sources.
- Engine ENG fuel supplying power to the engine and a motor as power sources.
- Motor ENG motor generator MG 1, motor generator MG 2, inverter unit 10 and main battery MB
- a power split mechanism 50 a speed reducer 60, a wheel 70, and an ECU 90.
- the engine ENG generates driving power from the combustion energy of fuel such as gasoline.
- the driving force generated by the engine ENG is divided into two paths by the power split mechanism 50 as shown by thick and oblique lines in FIG. One is a path that transmits to the drive shaft that drives the wheel 70 through the reduction gear 60. The other is the motor generator This is a route to be transmitted to MG1.
- the motor generators MG 1 and MG 2 can function as both a generator and an electric motor. However, as shown below, the motor generator MG 1 mainly operates as a generator, and the motor generator MG 2 mainly functions as an electric motor. Operate.
- the motor generator MG 1 is a three-phase AC rotating machine, and is used as a starter that moves the engine E N G during acceleration. At this time, the motor generator MG 1 is supplied with electric power from at least one of the main battery MB and the auxiliary battery SB and is driven as an electric motor to crank and start the engine ENG.
- the motor generator MG 1 is rotated by the driving force of the engine E N G transmitted through the power split mechanism 50 to generate electric power.
- the electric power generated by the motor generator MG 1 is properly used depending on the state of charge (SOC) of the main battery MB. For example, during normal running or sudden acceleration, the electric power generated by motor generator MG 1 becomes the electric power for driving motor generator MG 2 as it is. On the other hand, when the SOC of main battery MB is lower than a predetermined value, the electric power generated by motor generator MG 1 is converted from AC power to DC power by inverter unit 10 and stored in main battery MB.
- SOC state of charge
- Motor generator MG 2 is a three-phase AC rotating machine and is driven by at least one of electric power stored in main battery MB and electric power generated by motor generator MG 1.
- the driving force of motor generator MG 2 is transmitted to the driving shaft of wheel 70 via reduction gear 60.
- motor generator MG 2 assists engine E N G to drive the vehicle, or to drive the vehicle only with its own driving force.
- the main battery MB is a battery for traveling, and is a high voltage battery configured by connecting a large number of secondary battery cells such as nickel metal hydride batteries and lithium ion batteries in series.
- the main battery MB may be composed of capacitors or capacitors in addition to these secondary batteries.
- the vehicle In addition to the high-voltage main battery MB, the vehicle also has an auxiliary battery SB that supplies power to auxiliary electrical components, and a DC / DC that steps down the power of the main battery MB and supplies it to the auxiliary battery SB.
- a converter 20 and a DC / DC converter control circuit 3 ° are provided.
- the auxiliary battery SB is, for example, a lead storage battery.
- Auxiliary equipment that operates with power supplied from the auxiliary battery SB includes ECUs such as engine ECUs, powertrain ECUs, and brake ECUs that control vehicle travel, lighting devices, ignition devices, and electric pumps. included. In the following, these electric devices using the auxiliary battery SB as a power source are also referred to as low-voltage components.
- electrical equipment that uses the main battery MB as a power source is also called a high-voltage component.
- the D C / DC converter 20 is a bidirectional DC ZD C converter that can perform step-up and step-down operations. Specifically, the DC / DC converter 20 steps down the voltage of the power supplied from the main battery MB and supplies it to the auxiliary battery SB. The DC / DC converter 20 boosts the power supplied from the auxiliary battery SB and supplies it to the motor generator MG 1 via the inverter unit 10.
- the DCZDC converter control circuit 30 controls the step-up and step-down operations of the DC / DC converter 20.
- the present embodiment is characterized in that the DCZDC converter control circuit 30 is a high-voltage component that operates by receiving power supply from the main battery MB.
- the DCZDC converter control circuit 30 will be described in detail later.
- the ECU 90 controls the overall operation of the device / circuit group mounted on the vehicle in order to drive the vehicle mounted with the motor drive device according to the present embodiment in accordance with the driver's instruction. Specifically, in the CPU (Central Processing Unit) (not shown) built in the ECU 90, the vehicle operating state, the amount of accelerator depression, the rate of change in the amount of accelerator depression, throttle opening, shift position, main battery MB Various information such as SOC is processed based on a predetermined program, The resulting control signal is output to the device circuit group.
- the CPU Central Processing Unit
- FIG. 2 is a schematic block diagram of motor drive device 100 according to the embodiment of the present invention. '
- motor drive device 100 includes main battery MB, system relays SR 1 and SR 2, boost converter 12, inverters 1 3 and 1 5, current sensors 14 and 16, and DC.
- a DC / DC converter 20, an auxiliary battery MB, a DC / DC converter control circuit 30, and a control device 40 are provided.
- the motor generators MG 1 and MG 2 can function as a generator or an electric motor depending on the driving state of the vehicle.
- Motor generator MG 1 is driven by inverter 13.
- Motor generator MG 2 is driven by inverter 15.
- the inverters 13 and 15 and the boost converter 12 constitute an inverter unit 10 shown in FIG.
- System relays SR I and SR 2 are turned on / off by a signal SE from controller 40. More specifically, the system relays SR 1 and SR 2 are turned on by an H (logic high) level signal S E from the control device 40 and L from the control device 40.
- Boost converter 12 boosts the DC voltage supplied from main battery MB and supplies it to inverters 13 and 15. More specifically, when boost converter 12 receives signal PWC from control device 40, boost converter 12 supplies a DC voltage boosted in accordance with signal PWC to inverters 13 and 15. In addition, when boost converter 12 receives signal PWC from controller 40, it reduces the DC voltage supplied from inverters 13 and 15 and supplies it to main battery MB.
- Inverter 1 3 is a three-phase inverter.
- DC voltage is supplied from main battery MB via boost converter 12
- DC voltage is converted to three-phase AC based on control signal PW Ml from control circuit 40.
- motor generator MG1 is driven so as to generate torque specified by torque command value TR1.
- the inverter 15 is a three-phase inverter.
- the DC voltage is supplied from the main battery MB via the boost converter 12
- the DC voltage is converted into a three-phase AC voltage based on the control signal PWM 2 from the control circuit 40.
- the motor generator MG 2 is driven after conversion. As a result, motor generator MG 2 is driven so as to generate a torque specified by torque command value TR 2.
- inverter 13 converts the DC voltage from boost converter 12 into an AC voltage in accordance with signal PWM1 and outputs the torque specified by torque command value TR1.
- Drive 1. Motor generator MG 1 rotates engine ENG crankshaft (not shown) via power split mechanism 50 to start engine ENG.
- the motor generator MG 1 functions as a generator that generates electric power by the rotational force of the engine ENG after starting.
- inverter 13 converts the AC voltage generated by motor generator MG 1 into a DC voltage using signal PWM 1, and supplies the converted DC voltage to inverter 15.
- the inverter 15 receives the DC voltage from the boost converter and the DC voltage from the inverter 13, converts the received DC voltage into an AC voltage according to the signal PWM 2, and is specified by the torque command: TR 2.
- Motor generator MG 2 is driven so that the output torque is output.
- the boost converter boosts the DC voltage from the main battery MB according to the signal P WC from the control device 40 and supplies it to the inverter 15.
- Inverter 15 converts the DC voltage from the boost converter into an AC voltage according to signal PW M 2, and drives motor generator MG 2 so as to output the torque specified by torque command: TR 2.
- the boost converter boosts the DC voltage from the main battery MB according to the signal PWC from the control device 40 and supplies it to the inverter 15.
- the inverter 13 converts the AC voltage generated by the motor generator MG 1 by the rotational force of the engine into a DC voltage and supplies it to the inverter 15.
- the converter 15 receives the DC voltage from the boost converter 12 and the DC voltage from the inverter 13, converts the received DC voltage into an AC voltage according to the signal PWM 2, and generates torque specified by the torque command value TR 2.
- Motor generator MG 2 is driven to output.
- the inverter 15 converts the AC voltage generated by the motor generator MG 2 into a DC voltage based on the signal PWM 2 from the control device 40, and converts the converted DC voltage into a boost converter. Supply to 12.
- boosting converter 12 receives signal PWC from control device 40, boosting converter 12 steps down the DC voltage supplied from inverter 15 to charge main battery MB.
- regenerative braking here refers to braking with regenerative power generation when the driver operating the hybrid vehicle performs a foot brake operation, or while not operating the foot brake, but the accelerator pedal is not This includes decelerating (or stopping acceleration) the vehicle speed while regenerating power by turning it off.
- the control device 40 receives torque command values TR 1 and TR 2 and motor rotation numbers MRN 1 and MRN 2 from the ECU 90, receives input voltages Vml and Vm 2 of the inverters 13 and 15 from a voltage sensor (not shown), Receives motor currents MC RT 1 and MCRT 2 from current sensors 14 and 16.
- control device 40 Based on input voltage Vm 1 of inverter 13, torque command value TR 1 and motor current MCRT 1, control device 40 controls inverter 13 NPN transistor (not shown) when motor generator MG 1 is driven. To generate switching signal PWM1 and output the generated signal PWM1 to inverter 13.
- control device 40 uses the NPN transistor (not shown) of the inverter 15 when the inverter 15 drives the motor generator MG 2 based on the input voltage Vm 2 of the inverter 15, the torque command value TR 2 and the motor current MCRT 2. ) Generate a signal PWM 2 for switching control, and output the generated signal PWM 2 to inverter 15.
- the control device 40 detects the voltage Vb between the terminals of the main battery MB and the input voltage V of the inverter 13. Based on ml, torque command value TR 1 and motor rotation speed MRN 1, a signal PWC is generated for switching control of the NPN transistor (not shown) of boost converter 12 and the generated signal PWC is boost converter 1 Output to 2.
- the control device 40 determines that the voltage Vb between the terminals of the main battery MB, the input voltage Vm 2 of the inverter 15, the torque command value TR 2 and the motor speed MRN 2 Based on the above, a signal PWC for switching control of an NPN transistor (not shown) of the boost converter 12 is generated, and the generated signal PWC is output to the boost converter 12.
- control device 40 based on the input voltage Vm 2 of the inverter 15, the torque command value TR2 and the motor current MCRT 2, during regenerative braking of the hybrid vehicle equipped with the motor drive device 100, Generates a signal P WM 2 for converting the AC voltage generated by the DC into a DC voltage, and outputs the generated signal P WM 2 to the inverter 15.
- the NPN transistor (not shown) of the inverter 15 is switching-controlled by the signal PWM2.
- inverter 15 converts the AC voltage generated by motor generator MG 2 into a DC voltage and supplies it to boost converter 12. '
- the control device 40 is supplied from the inverter 15 based on the voltage V b between the terminals of the main battery MB, the input voltage Vm 2 of the inverter 15, the torque command value TR 2 and the motor rotational speed MR N2.
- a signal PWC for stepping down the DC voltage is generated, and the generated signal PWC is output to the boost converter 12.
- the AC voltage generated by motor generator MG 2 is converted into a DC voltage, stepped down, and supplied to main battery MB.
- the motor drive device 100 according to the present embodiment shown in FIG. 2 has the following characteristics with respect to the conventional motor drive device shown in FIG.
- the DC / DC converter 20 is characterized in that it is directly connected to the main battery MB without passing through the system relays SRI and SR2.
- the DCZDC converter 1 10 is configured so that the system relays SR 1 and SR 2 are turned on by the signal SE from the control device 120 when the vehicle system is started. Connected with main battery MB.
- DC / DC converter 20 is always connected to main battery MB regardless of whether the vehicle system is activated.
- the DC / DC converter control circuit 30 is a high-voltage component that uses the main battery MB as a power source.
- the DC7DC converter control circuit 30 can operate regardless of the charge state of the catcher battery SB.
- the DCZDC converter 12 performs a boost operation according to the control signal output from the DC ZDC converter control circuit 30 even when the battery of the auxiliary battery SB occurs, and promptly Auxiliary battery SB can be charged.
- DC / DC converter 20 and DC / DC converter control circuit 30 mounted on motor drive device 100 according to the present embodiment will be described in detail.
- FIG. 3 is a circuit diagram of the DCZDC converter 20 in FIG.
- DC / DC converter 20 includes input terminals 21 and 22, phototransistors Q1 to Q4, diodes D1 to D6, transformer T1, coil L1, and capacitor C. 1 and output terminals 23 and 24 are included.
- Input terminals 21 and 22 receive a DC voltage from main battery MB and supply the received DC voltage to both ends of phototransistors Q 1 and Q 2 and phototransistors Q 3 and Q4.
- the phototransistors Q 1 and Q 2 are connected in series between the power supply voltage and the ground voltage.
- Phototransistors Q3 and Q4 are connected in series between the power supply voltage and the ground voltage.
- Phototransistors Q1 and Q2 are connected in parallel with phototransistors Q3 and Q4 between the power supply voltage and ground voltage.
- diodes D 1 to D 4 are connected to flow current from the emitter side to the collector side, respectively.
- the phototransistors Q1 to Q4 constitute a photocoupler having the photodiode 38 as an input side and the phototransistors Q1 to Q4 as an output side in the photodiode 38 of the DCZDC converter control circuit 30 shown in FIG.
- the DC / DC converter control circuit 30 uses a signal as a control signal.
- the optical signals emitted from the photodiodes 38 of the photodiode 38 are output to the phototransistors Q 1 to Q 4 of the DC ZD C converter 20.
- the phototransistors Q 1 to Q 4 each receive an optical signal from the photodiode 38 at their gates, they are turned on and off based on the optical signal.
- the switching circuit in the D CZD C converter 20 is configured with a photo force bra. This is because the DC CZD C converter control circuit 30 is a high voltage component. This is to ensure electrical insulation between the main battery MB of voltage and the ground (body earth) by the vehicle body.
- the transformer T 1 has its primary coil placed between the connection node of the phototransistors Ql and Q2 and the connection node of the phototransistors Q3 and Q4. Furthermore, the secondary coil of the transformer T 1 is arranged so as to face the primary coil.
- the diode D5 is connected between the secondary coil of the transformer T1 and the coil L1 so that a current flows from the secondary coil of the transformer T1 to the coil L1.
- the diode D 6 is connected to the secondary side coil of the transformer T 1 so as to prevent the output current from flowing from the connection node between the diode D 5 and the coil L 1 ′ to the low voltage side of the secondary side coil. Connected to the coin L1.
- Coil L 1 is connected between diode D 5 and output terminal 23.
- the capacitor C 1 is connected between the output side of the coil L 1 and the ground voltage, and smoothes the output voltage from the coil L 1 and applies it to the output terminal 23.
- the primary side coil of the power supply voltage to the phototransistor Q 1 to the transformer T 1 to the phototransistor Q Input current flows in the path of 4 to ground voltage.
- the transformer T 1 steps down the input voltage according to the winding ratio between the primary side coil and the secondary side coil, and outputs an output voltage.
- an output current flows through a path from the secondary coil of the transformer T 1 to the diode D 5 to the coil L 1 to the auxiliary battery SB to the ground voltage.
- the input current changes according to the rate at which the phototransistors Q 1 and Q 4 are turned on / off, that is, the duty ratio, and the voltage applied to the transformer T 1 changes. sand In other words, when the on-duty of the phototransistors Ql and Q4 increases, the input current increases and the voltage applied to the transformer T1 increases. On the other hand, when the on-duty of the phototransistors Ql and Q4 decreases, the input current decreases and the voltage applied to the transformer T1 decreases.
- the output voltage on the secondary side of the DCZDC converter changes according to the voltage applied to the transformer T 1. To do.
- FIG. 4 is a block diagram of the DCZDC converter control circuit 30 in FIG.
- a DC / DC converter control circuit 30 includes a microcomputer (hereinafter also referred to as a microcomputer) 32, an interface (I / O 34, 36, a photodiode 38, a transformer T 2 Including.
- the DCZDC converter control circuit 30 is a high-voltage component that uses the main battery MB as a power source, as described above. Specifically, the microcomputer 32 uses the main battery MB as a power source and starts up using the signal from the interface 36 as a trigger signal, thereby controlling the switching of the phototransistors Q1 to Q4 of the DC / DC converter 20. Generate a signal.
- the control signal generated by the microcomputer 32 is input to the photodiode 38 via the interface 34.
- the photodiode 38 emits light according to the control signal input from the microcomputer 32, and outputs the emitted optical signal to the phototransistors Q1 to Q4 of the D C ZD C converter 20.
- Phototransistors Q1 to Q4 receive this optical signal and perform switching operation. As a result, the power of the main battery MB is stepped down and supplied to the skin battery SB.
- the interface 36 normally outputs a trigger signal for starting the microcomputer 32 in response to the start of the status switch when the vehicle system is started.
- the ECU-related operation does not operate due to the auxiliary battery running out, and the vehicle system If the system becomes unable to start up, the trigger signal cannot be given from the interface 3 6 to the microcomputer 3 2, and the microcomputer 3 2 cannot be started up. As a result, it is impossible to charge the catcher battery SB by operating the DC / DC converter 2 °.
- the motor drive device 100 uses the backup power supply BB and the signal from the backup power supply BB to the microcomputer 32 as a starting means for the microcomputer 32 when the auxiliary battery runs out. It also has a switch 80 to apply.
- the backup power supply B B is a low voltage battery such as a button battery, for example, and is connected to the primary coil of the transformer T 2 of the DC / DC converter control circuit 30 via the switch 80.
- the secondary coil of the transformer T 2 is connected to the interface 36.
- the switch 80 is a manual switch that can be manually turned on / off by a driver or the like, and electrically connects the backup power source B B and the primary coil of the transformer T 2 in the on state.
- the driver manually turns on the switch 80.
- the switch 80 When the switch 80 is turned on, the backup power supply B B and the primary coil of the transformer T 2 are connected, and a voltage is applied to the primary coil of the transformer T 2. Accordingly, a voltage corresponding to the winding ratio between the primary side coil and the secondary side coil is output to the secondary side coil of the transformer T2.
- the output voltage generated in the secondary coil of transformer T 2 is input to interface 36.
- the interface 36 When the output voltage of the transformer T 2 is input, the interface 36 generates a signal that is activated according to the rising timing of the input voltage, and inputs the generated signal to the microcomputer 32.
- the microcomputer 3 2 starts up using the input signal from the interface 36 as a trigger signal.
- the DC ZD C converter control circuit 30 outputs a control signal to the phototransistors Q 1 to Q 4 of the D CZD C converter 20 when the microcomputer 3 2 is activated.
- the DC / DC converter 20 performs a step-down operation according to the control signal, and charges the voltage between the terminals of the catcher battery SB to a desired voltage level at which the engine can be started.
- the motor driving device 100 can cause the motor generator MG 1 to generate a driving force necessary for starting the engine.
- FIG. 5 is a flowchart for explaining the operation when the catcher battery is raised in the motor drive device according to the embodiment of the present invention.
- the driver checks whether the auxiliary battery has been lifted (step S O 1). Specifically, the state of charge of the auxiliary battery SB is notified by the display means, so that the driver can know the abnormality of the auxiliary battery SB.
- step SO1 when it is not confirmed that the auxiliary battery has run out, that is, when the charged state of the auxiliary battery SB satisfies a desired level, the motor drive device 100 operates in response to the ignition switch being turned on (step S 05). Further, the engine is started by the driving force generated in motor generator MG 1 (step S O 6).
- step SO 2 the driver turns on the manual switch 80 and connects the DC / DC converter control circuit 30 and the backup power supply BB (step SO 2).
- the microcomputer 32 built in the DC ZDC converter control circuit 30 starts up using the input voltage from the backup power supply B B as a trigger signal.
- the DC / DC converter 20 is driven to charge the auxiliary battery SB (step S03). Specifically, the DC / DC converter control circuit 30 generates a control signal for turning on / off the phototransistors Q1 to Q4 of the DC / DC converter 20 after startup, and the generated control signal is converted to DC / DC. Output to DC converter 20.
- the DC / DC converter 20 performs the switching operation of the phototransistors Q1 to Q4 according to the control signal, steps down the DC voltage of the main battery MB to a desired voltage, and supplies it to the auxiliary battery SB.
- step S 04 If it is determined in step S 04 that the voltage across the terminals of auxiliary battery SB has reached a desired voltage level, the vehicle system is activated. Specifically, when the ignition switch is turned on (step SO5), the motor drive device 100 is turned on. Motor generator MG 1 is driven by the power of the internal battery MB. The engine is started by the driving force of this motor generator MG 1 (Step S 0 6) D
- main battery MB, DC / DC converter control circuit 30 using main battery MB as a power source, and DC / DC converter 2 connected to main battery MB 0 and system relays SR 1 and SR 2 can be integrated into a single housing as a battery pack and then cooled together using the cooling device for the main battery MB. It becomes possible. According to this, since it is not necessary to newly provide a cooling device for the D CZD C converter 2 and the D CZD C converter control circuit 30, it is possible to suppress an increase in the device scale and cost.
- the present invention can be applied to a motor drive device mounted on a hybrid vehicle.
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US11/632,727 US7764044B2 (en) | 2004-08-04 | 2005-08-03 | Motor driving apparatus capable of driving motor with reliability |
CN2005800264371A CN1993879B (zh) | 2004-08-04 | 2005-08-03 | 能够可靠驱动电机的电机驱动装置 |
EP05770826A EP1780864A1 (en) | 2004-08-04 | 2005-08-03 | Motor driving apparatus capable of driving motor with reliability |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-228021 | 2004-08-04 | ||
JP2004228021A JP2006050779A (ja) | 2004-08-04 | 2004-08-04 | モータ駆動装置 |
Publications (1)
Publication Number | Publication Date |
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WO2006014016A1 true WO2006014016A1 (ja) | 2006-02-09 |
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ID=35787288
Family Applications (1)
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PCT/JP2005/014616 WO2006014016A1 (ja) | 2004-08-04 | 2005-08-03 | 確実にモータの駆動が可能なモータ駆動装置 |
Country Status (6)
Country | Link |
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US (1) | US7764044B2 (ja) |
EP (1) | EP1780864A1 (ja) |
JP (1) | JP2006050779A (ja) |
KR (1) | KR20070049194A (ja) |
CN (1) | CN1993879B (ja) |
WO (1) | WO2006014016A1 (ja) |
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Also Published As
Publication number | Publication date |
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CN1993879B (zh) | 2010-06-16 |
EP1780864A1 (en) | 2007-05-02 |
US7764044B2 (en) | 2010-07-27 |
US20080067973A1 (en) | 2008-03-20 |
CN1993879A (zh) | 2007-07-04 |
KR20070049194A (ko) | 2007-05-10 |
JP2006050779A (ja) | 2006-02-16 |
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